CN209763136U

CN209763136U - Self-holding type hearth flame television on-off control device

Info

Publication number: CN209763136U
Application number: CN201821484644.2U
Authority: CN
Inventors: 张大伟; 张景光; 朱立军; 张晨光
Original assignee: Changchun Thermoelectric Development Co Ltd
Current assignee: Changchun Thermoelectric Development Co Ltd
Priority date: 2018-09-12
Filing date: 2018-09-12
Publication date: 2019-12-10
Anticipated expiration: 2028-09-12

Abstract

a self-holding hearth flame television on-off control device belongs to the field of power plant electronic equipment. The utility model discloses a constitute through equipment such as relay, contactor, 24V DC power supply for the propelling, withdraw from and the self-sustaining formula furnace flame TV of interlock control compressed air source door of automatic control furnace flame TV camera throw and move back controlling means. The local control box P3 of the utility model is connected with the remote control box through the cable 08 and is respectively connected with the local equipment through the cables 02, 03, 04, 05, 06 and 07; in the local control box P3, there are a local control box internal connection terminal G2, an ac control section G3, a dc control G4, a compressed air power door interlock control section G11, a remote control box and a terminal G12. The utility model discloses the required article of preparation are on-the-spot common components and parts, and the low price uses this system to replace former equipment will practice thrift a large amount of costs.

Description

self-holding type hearth flame television on-off control device

Technical Field

The invention belongs to the field of power plant electronic equipment.

Background

The TV monitoring system for flame in furnace is a colour industrial TV monitoring system which can insert the mirror tube into the interior of furnace from furnace wall to monitor the combustion state of whole furnace, and by means of said system the operator can see the real image of fuel combustion in furnace on the monitor in control room. When the boiler is ignited, the boiler operates under a small load, a fuel conveying system and the like have faults, the faults can be displayed in time, and measures are taken. It is an indispensable device for safe and economic operation of a hearth. The temperature is high in the furnace, and furnace flame TV camera protection tube is equipped with the compressed air cooling, but if air supply pressure is not enough to cool off the camera, should in time withdraw from furnace flame TV camera. And the flame television is put into the flame television again when the air source pressure meets the requirement.

the original hearth flame television monitoring control system of the company is seriously aged, the switching control device of a single system fails, and the function is single. The flame television is frequently withdrawn from operation when the pressure of the cooling compressed air is unstable, the flame television is required to be operated and propelled again by a maintainer, the gas source cannot be closed in a linkage manner after the flame television is withdrawn during blowing out, waste is caused, the normal monitoring of the operator is seriously influenced by abnormal working conditions, and the workload of the maintainer is increased. Therefore, the self-holding hearth flame television on-off control system (hereinafter referred to as the device) of the furnace is manufactured to replace the original control device and meet the field requirement.

Disclosure of Invention

the invention aims to provide a self-holding hearth flame television on-off control device which is composed of a relay, a contactor, a 24V direct-current power supply and the like and is used for automatically controlling the pushing and the withdrawing of a hearth flame television camera and interlocking control of a compressed air source door.

the invention comprises the following steps:

the control system comprises a local control box P3, a remote control box and local equipment, wherein the local control box P3 is connected with the remote control box through a cable 08 and is respectively connected with the local equipment through cables 02, 03, 04, 05, 06 and 07; a local control box internal connection terminal G2, an alternating current control part G3, a direct current control G4, a compressed air electric door interlocking control part G11, a remote control box and a terminal G12 are arranged in a local control box P3;

a box internal connection terminal G2 is controlled in situ: the upper row serial number is a node number defined in the device schematic diagram, wherein Z1-Z48 are nodes in a direct current control loop; J51-J59 are nodes in the alternating current loop, the serial number of the lower row is an external device identifier, and the lower row is described as an external device description;

the ac control portion G3: left side main lineRight side main lineIs connected with an alternating current 220V power supply, Through an idle switch KG1, the idle switch lower port lines are J51 and J52, and the middle of the idle switch lower port line is composed of a plurality of relay contacts, a DC24V power box, an alternating current contactor, an emergency stop button, a capacitor and a motor; it is composed of 3 branches:

the 1 st branch, namely a 24V direct-current power supply branch, is composed of a DC24V power supply box, and Z1 and Z2 lines output by the power supply box are taken as a direct-current control part main line and are respectively led to U1+ and U1-in a direct-current control part schematic diagram;

the left side of the No. 2 branch, namely the part between J51 and J55, and the upper 'push contactor branch' is formed by connecting a 'push action' relay K1.4NO with an 'exit' AC contactor A12.1NC in series through a node J53 and then connecting a coil of a 'push' AC contactor A11 in series through a node J54; the lower exit contactor branch is formed by connecting an exit action relay K2.4NO with an advance AC contactor A11.1NC in series through a node J56 and then connecting an exit AC contactor A12 in series through a node J57; the right side of the 2 nd branch, namely the part between J55 and J52, is composed of an emergency stop button TB3.2NC;

The third branch 'motor advancing and exiting running branch' is that the L line J51 of the AC220V is connected to the motors J58 and J59 through an 'advancing' AC contactor A11.2NO and an 'exiting' AC contactor A12.2NO, the capacitors are connected in parallel to J58 and J59, and the N line J52 of the AC220V is connected to the common line of the motors;

fourth direct current control G4: the left main line is U1+, the right main line is U1-, and the power box outputs Z1 and Z2 lines from the 1 st branch '24V direct current power supply branch' in the G3 alternating current control part schematic diagram respectively; the left node U1+, U2+, U3+, U4+, U5+, U6+ are equipotential and are DC24V +; the right side node U1-, U2-, U3-, U4-, U5-, U6-equipotential is DC 24V-; comprises a push control part G5, an exit control part G6, a put-in-place and protection control part G7, a push self-holding control part G8, an indicator light control part G9 and a button control part G10;

First, the propulsion control portion G5: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from the nodes U1+ and U1-in the G4 direct current control principle general diagram, and connected with the next part G6 exit control part principle diagram through the nodes U2+ and U2; the middle of the relay is connected with a coil part of a 'propulsion action' relay K1 by a plurality of relay contacts in series-parallel combination;

The 1 st branch between the left sides Z1 and Z4 is composed of a local push relay K11.1 NO connected with a remote local relay K10.1NC in series through a node Z3; the 2 nd branch between the left Z1 and the left Z4 consists of a 'propulsion action' relay K1.1 NO; a 3 rd branch between the left sides Z1 and Z4 is formed by a 'push hold' relay K7.1NO and an 'air source pressure abnormity' relay K8.1NC in series connection through a node Z9; the 4 th branch between the left sides Z1 and Z4 is composed of a remote propulsion relay K13.1NO and a remote local relay K10.2NO which are connected in series through a node Z10;

a part 1 of the first branch between the middle Z4 and the middle Z8 is formed by connecting an exit action relay K2.1NC with an in-place relay K3.1NC through a node Z5, then connecting an under-voltage relay K5.1NC through a node Z6, and connecting an over-temperature relay K6.1NC through a node Z7; the 2 nd branch between the middle Z4 and Z8 consists of a forced operation button TB4.1NO;

The part between the right sides Z8 and Z2 is composed of a coil of a 'push action' relay K1;

② the exit control portion G6: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from the nodes U2+ and U2-in the G5 propulsion control part schematic diagram, and connected with the G7 in place and protection control part schematic diagram through the nodes U3+ and U3; the middle of the relay is connected with a coil part of an exit action relay K2 by a plurality of relay contacts in series-parallel combination;

A part 1 of the branch between the left sides Z1 and Z12 is composed of an in-situ quit relay K12.1NO and a remote in-situ relay K10.3NC which are connected in series through a node Z11; the 2 nd branch between the left sides Z1 and Z12 is composed of an exit action relay K2.2NO; the 3 rd branch between the Z1 and the Z12 on the left side is composed of an undervoltage relay K5.2NO; the 4 th branch between the left Z1 and the left Z12 is composed of an overtemperature relay K6.2NO; the 5 th branch between the left sides Z1 and Z12 is composed of a remote exit relay K14.1NO and a remote local relay K10.4NO which are connected in series through a node Z15;

The part 1 of the branch between the middle Z12 and the middle Z14 is formed by connecting a 'pushing action' relay K1.2NC and a 'backing-in-place' relay K4.1NC in series through a node Z13; the 2 nd branch between the middle Z12 and Z14 consists of a forced operation button TB4.2NO;

the part between the right sides Z14 and Z2 is composed of a coil of an exit action relay K2;

③ the in-place and protection control part G7: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, and the two main lines are respectively led from a G6 to exit from the U3+ and U3-nodes in the control part schematic diagram and are connected with the G8 propelling self-holding control part schematic diagram through the U4+ and U4-nodes; the middle part is formed by connecting 8 branch lines in parallel;

The 1 st branch is formed by connecting a normally open contact KG3.NO of an in-place travel switch with a coil of an in-place relay K3 in series through a node Z16;

The 2 nd branch is composed of an 'enter-in-place' relay K3.2NO and an 'enter-in-place indicator lamp' L3 in series through a node Z17;

The 3 rd branch is formed by connecting a normally open contact KG4.NO of a return-to-position travel switch with a coil of a return-to-position relay K4 in series through a node Z18;

the 4 th branch is formed by connecting a back-to-place relay K4.2NO with a back-to-place indicator lamp L4 in series through a node Z19;

The 5 th branch is formed by connecting a normally open contact P5.NO of an electric contact pressure gauge with a coil of an undervoltage relay K5 in series through a node Z20;

the 6 th branch is formed by connecting an undervoltage relay K5.3NO with an undervoltage indicator lamp L5 in series through a node Z21;

The 7 th branch is formed by connecting a normally open contact T6.NO of a temperature protection switch with a coil of an over-temperature relay K6 in series through a node Z22;

the 8 th branch is formed by connecting an overtemperature relay K6.3NO with an overtemperature indicator lamp L6 in series through a node Z23;

(iv) the advancing self-holding control portion G8: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from G7 to the position, and the nodes U4+ and U4-in the protection control part schematic diagram are connected with the G9 indicator light control part schematic diagram through the nodes U5+ and U5-respectively; the middle of the relay is connected with a coil part of a 'push and hold' relay K7 by a plurality of relay contacts and buttons in series-parallel combination;

a part 1 of the branch between the left sides Z1 and Z25 is composed of a normally closed contact TB3.1NC of an emergency stop button and a push and hold relay K7.2 NO connected in series through a node Z24; a 2 nd branch between the left Z1 and the left Z25 is formed by connecting a propulsion action relay K1.3NO with a node Z29, connecting a local propulsion relay K11.2NO and a remote propulsion relay K13.2NO in parallel, and then connecting the nodes Z29 and Z25 in series;

The part between the middle parts Z25 and Z26 consists of a normally closed contact TX7.NC of a push-hold input knob; the 1 st branch of the part between the middle parts Z26 and Z28 is composed of a local exit relay K12.2NC and a remote exit relay K14.2NC which are connected in series through a node Z27; a first branch between the middle parts Z26 and Z28 is composed of an exit action relay K2.3NC;

The part between the right sides Z28 and Z2 is composed of a coil of a 'push and hold' relay K7;

Fifth indicator light control part G9: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, which are respectively led from the nodes U5+ and U5-in the G8 propelling self-holding control part and are connected with the G10 button control part schematic diagram through the nodes U6+ and U6; the middle part is formed by connecting 5 branch lines in parallel;

the 1 st branch is formed by connecting a normally open contact K8Y.NO of an 'air source abnormity' K8Y from a DCS system in series with a coil of an 'air source abnormity' relay K8 through a node Z30;

the 2 nd branch is formed by connecting an 'air supply abnormity' relay K8.2NO with an 'air supply abnormity indicator lamp' L8 in series through a node Z31;

the 3 rd branch is formed by connecting a propelling alternating current contactor A11.3NO with a propelling indicator lamp L1 in series through a node Z31;

the 4 th branch is formed by connecting an exit alternating current contactor A12.3NO with an exit indicator lamp L2 in series through a node Z32;

The 5 th branch is formed by connecting an undervoltage relay K5.4NO and an overtemperature relay K6.4NO in parallel, connecting the undervoltage relay K5.4NO with an exit alternating-current contactor A12.4NC in series through a node Z34, connecting the exit alternating-current contactor with a return-to-position relay K4.3NC in series through a node Z35, and connecting the return-to-position relay with an alarm indicator light L9 in series through a node Z36;

Sixthly, the button control part G10: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, which are respectively led from the nodes of U6+ and U6 in the G9 indicator light control part; the middle part is formed by connecting 7 branch lines in parallel;

the 1 st branch is formed by connecting a local propulsion relay K11.3NO and a remote propulsion relay K13.3NO in parallel and then connecting a node Z37 and a coil of a linkage door opening relay K9 in series;

The 2 nd branch is formed by connecting a normally open contact TX10.NO of a remote/local switching knob TX10 in series with a coil of a remote/local switching relay K10 through a node Z38;

The 3 rd branch is composed of a power indicator lamp L10;

the 4 th branch is formed by connecting a normally open contact TB1.NO of an in-situ 'push button' TB1 in series with a coil of an in-situ push relay K11 through a node Z39;

The 5 th branch is formed by connecting a normally open contact TB2.NO of an in-situ exit button TB2 in series with an in-situ exit relay K12 coil through a node Z40;

The 6 th branch is formed by connecting a normally open contact T1Y.NO of a remote propulsion button T1Y with a coil of a remote propulsion relay K13 in series through a node Z41;

the 7 th branch is formed by connecting a normally open contact T2Y.NO of a remote exit button T2Y with a coil of a remote exit relay K14 in series through a node Z42;

Fifthly, interlocking control part G11 of the compressed air electric door: K4.1NC wiring is shown in a G6 exit control part, K4.2NO wiring is shown in a G7 in-place and protection control part principle, K4.3NC wiring is shown in a G9 indicator light control part, and K4.4NO wiring is led to Z45 and Z46 in a G2 local control box wiring terminal; the coil part of the relay K4 is wired to a G7 in-place and protection control part;

K9.1NO leads to Z43 and Z44 in a G2 local control box wiring terminal; the coil part of the relay K9 is wired in a G10 button control part;

Sixthly, a remote control box and a terminal G12: remote cable 08: telecommunication cables connecting the local control box P3 in the overall system of the local control box G1 and the P2 in the overall system of the remote control box G1 of the device;

The 1 st core of the cable 08 is a public line of DC24V +, and is connected with a local control box Z1; simultaneously short-circuiting the 1 st core with Z48 in the cable 09;

The 2 nd core of the cable 08 is connected to a local control box Z30, and the 2 nd core is simultaneously short-circuited with the Z47 in the cable 09;

the cable 08 No. 3 core Z41 and Z2 are connected to two ends of a remote push button T1Y, and Z41 is connected to a local control box;

The cable 08 4 th core Z42 and Z2 are connected to two ends of a remote exit button T2Y, and Z42 is connected to a local control box;

The 5 th core of the cable 08 is a public line of DC24V-, and is connected with a local control box Z2;

The 6 th core of the cable 08 is led from a local control box Z17 and Z2 to two ends of an 'in-position remote indicator lamp' L3Y;

the 7 th core of the cable 08 is led from a local control box Z19 and Z2 to two ends of a 'retreat remote indicator lamp' L4Y;

the 8 th core of the cable 08 is led from a local control box Z21 and Z2 to the two ends of an under-voltage remote indicator lamp L5Y;

the 9 th core of the cable 08 is led from a local control box Z23 and Z2 to two ends of an 'over-temperature remote indicator lamp' L6Y;

The 10 th core of the cable 08 is led from a local control box Z31 and Z2 to two ends of an 'air source abnormal remote indicator lamp' L8Y;

The 11 th core of the cable 08 is led from a local control box Z36 and Z2 to two ends of an alarm remote indicator lamp L9Y;

cable 09: the DO signal "compressed air pressure surge" in the P1DCS cabinet taken from the G1 overall system schematic.

The invention changes the traditional flame television control mode. Besides the functions of the original control device, the following functions are added, and the device has new characteristics.

first, a propulsion hold function is provided. When the flame television is put into operation, if the pressure of an air source is low (or overtemperature protection action is taken), the flame television automatically exits; when the pressure of the air source is recovered (or the temperature is recovered), the air source can be automatically propelled without manual operation again.

Secondly, a 'compressed air pressure abnormal fluctuation' signal from a DCS system is introduced, the device is shielded to keep the function, and equipment is prevented from being burnt due to repeated advance and retreat of a flame television when an air source fluctuates repeatedly.

And thirdly, the linkage control between the throwing and withdrawing of the flame television camera and the opening and closing of the compressed air electric door is added, and the air source is automatically closed when the flame television is stopped, so that the workload of switching the air source by maintainers is reduced, and the waste is also avoided.

Fourthly, a weak current control loop is used, and the overhaul is safe; and humanized functions such as alarming, forced operation, on-site emergency stop and the like are added, and convenient conditions are provided for overhaul, maintenance, debugging and other work of maintainers.

fifthly, the articles required by the device are all field common components and parts, the price is low, and a large amount of cost can be saved by using the system to replace the original equipment.

drawings

FIG. 1 is a schematic diagram of an overall system;

FIG. 2 is a terminal sub-diagram within the in-place control box of the present invention;

FIG. 3 is a schematic diagram of an AC control portion of the present invention;

FIG. 4 is a general diagram of the DC control principle of the present invention;

FIG. 5 is a schematic diagram of a propulsion control portion of the present invention;

FIG. 6 is a schematic diagram of the exit control portion of the present invention;

FIG. 7 is a schematic diagram of the positioning and protection control portion of the present invention;

FIG. 8 is a schematic diagram of the propulsion self-hold control portion of the present invention;

FIG. 9 is a schematic diagram of a control portion of the indicator light of the present invention;

FIG. 10 is a schematic diagram of a button control portion of the present invention;

FIG. 11 is a schematic view of a linkage control portion of the compressed air electric door of the present invention;

fig. 12 is a diagram of the remote control box concept and terminals of the present invention.

Detailed Description

the invention consists of 14 DC24V relays, 2 AC220V contactors, 1DC 24V power box, 6 buttons, 2 knobs, 15 DC24V indicator lights and the like. The device comprises a local control box and a remote control box which are connected through a 1.0-12 shielded cable. The local control box is arranged at the position of a flame television camera of a hearth, an alternating current 220V power supply for work needs to be led and connected, a shielding cable is remotely controlled, a position switch is opened and closed, an electric contact pressure gauge, a temperature switch, a motor and a compressed air electric door are arranged in the position control box. The functions of advancing, retreating, scram, forced operation, propulsion maintaining selection, remote on-site selection, interlocking of a switch and a compressed air electric door and the like can be realized at the on-site control box. In addition, it is equipped with "push in", "withdraw from in", "enter into position", "withdraw from position", "under-pressure", "over-temperature", "air source pressure abnormity", "alarm" and "power supply indication" indicator lights. The remote control box is arranged at a CRT of the flame television and needs to be connected with a remote control shielded cable and a signal of a DCS system. The remote control box can realize the forward and backward operation functions. In addition, it is equipped with "enter position", "retreat position", "under-pressure", "over-temperature", "air source pressure abnormity" and "alarm" indicator light. The local control box may be used independently but will lose part of its functionality.

the invention is shown in figure 1, wherein P2 and P3 are the device, and the rest part belongs to external equipment.

in the figure, P1 is a DCS cabinet, and belongs to an external device. The device can take a DO signal 'compressed air pressure abnormal fluctuation' from the DCS system. Connected to a remote control box P2 by a cable 09.

in the figure, P2 is a remote control box of the device, which is arranged at a flame television display of a single control chamber hearth and is used for remote control. Connected to the local control box by a cable 08.

in the figure, P3 is the local control box of the device, which is arranged at the local flame television camera and is used for local control of the flame television. The remote control box is connected with the remote control box through a cable 08, and the local equipment is connected with the local equipment through cables 02, 03, 04, 05, 06 and 07.

in the figure, P4 is a compressed air electric door, belonging to an external device, which is installed on a cooling air pipeline for opening and closing a cooling air source and is connected with a local control box through a cable 07.

In the figure, P6 is a 220V ac single-phase motor, which belongs to an external device. The flame television camera is arranged on the advancing and retreating guide rail and used for advancing and retreating the flame television camera. Connected with the local control box through a cable 02.

In the figure, P7 is a back-to-position travel switch, and belongs to an external device. The flame television camera moving guide rail is arranged on the flame television camera moving guide rail and used for moving the flame television camera out of the in-place control. And is connected with the local control box through a cable 04.

In the figure, P8 is a travel switch for the forward position, and belongs to an external device. The flame television camera advancing and retreating guide rail is arranged on the flame television camera advancing and retreating guide rail and used for advancing and in-place controlling of the flame television camera. And is connected with the local control box through a cable 03.

In the figure, P9 is an electric contact pressure gauge, and belongs to external equipment. The device is arranged on a cooling air pipeline, is used for protecting the low pressure of a cooling air source, and is connected with a local control box through a cable 05.

In the figure, P10 is a flame television camera protection cylinder, belonging to external equipment. The camera, the temperature switch, the lens group, the protective sleeve and the like are included. The temperature protection function is realized, and the imaging function is realized. Connected with the local control box through a cable 06.

The English letters related to the device have the following abbreviated meanings as follows:

。

The relays used by the device are named according to the following principles:

take MT4N-GS24VDC relay manufactured by OMRON corporation as an example: pins 1, 5 and 9 are channels 1, pins 1 and 9 are normally closed contacts NC, and pins 5 and 9 are normally open contacts NO; pins 2, 6 and 10 are channels 2, pins 2 and 10 are normally closed contacts NC, and pins 6 and 10 are normally open contacts NO; pins 3, 7 and 11 are channels 3, pins 3 and 11 are normally closed contacts NC, and pins 7 and 11 are normally open contacts NO; pins 4, 8 and 12 are channels 4, pins 4 and 12 are normally closed contacts NC, and pins 8 and 12 are normally open contacts NO.

For example, the 2 nd channel of the first relay of the device uses a normally closed contact, which is recorded as K1.2NC; the channel 2 of the second relay of the device uses a normally open contact, recorded as K2.2NO, and the rest is the same.

The contact naming mode used by the device, such as the contactor, the button switch and the knob switch, and the relay naming rule.

Fig. 2 is a diagram of a local control box internal connection terminal G2. Located in a P3 local control box in the G1 overall system schematic. The upper row sequence number is the node number defined in the schematic diagram of the device (wherein Z1-Z48 are the nodes in the DC control loop; J51-J59 are the nodes in the AC loop). The lower row serial number is an external device identifier, and the lower row description is an external device description. Wherein each cable is illustrated as follows: cable 01: is the power supply inlet wire of the device. Cable 02: the device is a power cable from the device to the motor. Cable 03: the normally open contact of the position-entering travel switch is connected with the device. A cable 04: the normally open contact of the return travel switch is connected with the device. Cable 05: normally open contact of the electric contact pressure gauge to the device. Cable 06: the normally open contact of the temperature switch is connected to the device. Cable 07: the passive node of the output of the device is connected to the compressed air electric door. Cable 08: and the remote cable is connected with the local control box and the remote control box of the device.

fig. 3 is a schematic diagram of an ac control portion G3, in which the listed components are located in a P3 local control box in a G1 overall system schematic diagram, and a motor in a dotted line belongs to an external device, which is P6 in a G1 overall system schematic diagram.

the connections are illustrated as follows:

the left side main line isThe right side main line isIs connected with an alternating current 220V power supply, Through empty opening KG1, the empty opening lower port line is J51, J52, and the centre comprises a plurality of relay contacts, DC24V power supply box, ac contactor, scram button, condenser, motor. The lower side consists of 3 branches.

the 1 st branch, the 24V direct current power supply branch, is composed of a DC24V power supply box, and the output Z1 and Z2 lines of the power supply box are the main line of the direct current control part and are respectively led to U1+ and U1-in the principle diagram of the direct current control part.

the upper "push contactor branch" on the left side (portion between J51 and J55) of branch 2 is composed of a "push action" relay K1.4NO connected in series with the "exit" ac contactor A12.1NC via node J53 and then connected in series with the coil of the "push" ac contactor a11 via node J54. The lower "exit contactor branch" is formed by the "exit action" relay K2.4NO connected in series with the "push on" ac contactor A11.1NC through node J56 and then connected in series with the coil of the "exit" ac contactor a12 through node J57. The right side of branch 2 (between J55 and J52) is comprised of a "scram" button TB3.2NC.

The 3 rd branch 'motor driving and running exit branch' is that the L line J51 of the AC220V is connected to the motors J58 and J59 through a 'driving' AC contactor A11.2NO and a 'exiting' AC contactor A12.2NO, capacitors are connected in parallel to J58 and J59, and the N line J52 of the AC220V is connected to the common line of the motors.

The principle is illustrated as follows:

the air switch KG1 realizes the power on and off functions of the whole circuit.

The 1 st branch provides DC24V power supply for the DC control part of the device.

The upper "push-in contactor branch" on the left side of branch 2 (portion between J51 and J55) effects that "push-in action" relay K1 is energized, K1.4NO is turned on, "exit" ac contactor a12 is not energized A12.1NC, and "push" ac contactor a11 is also energized and interlocked with "exit" ac contactor a12. The lower "exit contactor branch" effects "exit action" relay K2 energized, K2.4NO turned on, "push" ac contactor a11 was not energized, A11.1NC turned on, and "exit" ac contactor a12 was also energized and interlocked with "push" ac contactor a11. And the right side of the 2 nd branch realizes the function of emergency braking in emergency.

When the 3 rd branch 'motor propulsion and exit operation branch' realizes the excitation of a 'propulsion' AC contactor A11, the motor operates towards the propulsion direction, and when the 'exit' AC contactor A12 is excited, the motor operates towards the exit direction.

fig. 4 is a schematic diagram of dc control G4, with the listed components located in the P3 local control box of the overall system diagram of G1.

The connections are illustrated as follows: the left main line is U1+, the right main line is U1-, and the two main lines are respectively connected with output Z1 and Z2 lines of a power box of a1 st branch '24V direct-current power supply branch' in a G3 alternating-current control part principle diagram. The left node U1+, U2+, U3+, U4+, U5+, U6+ are equipotential, DC24V +. Right node U1-, U2-, U3-, U4-, U5-, U6-equipotential, is DC 24V-. The device consists of six branches, namely a propelling control part, an exiting control part, a positioning and protecting control part, a propelling self-holding control part, an indicator light control part and a button control part. The detailed connection description and the principle description of each branch are described one by one below.

Fig. 5 is a schematic diagram of the propulsion control portion G5, which is the first branch of the general diagram of the dc control principle of fig. G4. The listed components are located in the P3 local control box of the G1 overall system schematic.

the connections are illustrated as follows:

The left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from the nodes U1+ and U1-in the G4 direct current control principle general diagram, and connected with the next part G6 exit control part principle diagram through the nodes U2+ and U2. The coil part of the 'pushing action' relay K1 is connected in series-parallel combination by a plurality of relay contacts in the middle.

the 1 st branch on the left side of the figure (section between Z1 and Z4) is formed by a "push on the spot" relay K11.1 NO connected in series with a "remote on the spot" relay K10.1NC via a node Z3. The 2 nd branch on the left side (part between Z1 and Z4) is composed of a 'push action' relay K1.1 NO. The 3 rd branch on the left side (the part between Z1 and Z4) is composed of a "push-hold" relay K7.1NO and an "air supply pressure anomaly" relay K8.1NC which are connected in series through a node Z9. The left (section between Z1, Z4) th branch is made up of a "remote propel" relay K13.1NO in series with a "remote home" relay K10.2NO through node Z10.

In the middle (part between Z4 and Z8) 1 st branch of the figure is composed of an exit action relay K2.1NC, a node Z5, an in-place relay K3.1NC, a node Z6, an under-voltage relay K5.1NC and a node Z7, and an over-temperature relay K6.1NC. The middle (section between Z4, Z8) 2 nd branch consists of a force operation button TB4.1NO.

The right side in the figure (the section between Z8 and Z2) consists of the coil of a "push action" relay K1.

the principle is illustrated as follows:

In the figure, the 1 st branch (the part between Z1 and Z4) on the left side is composed of K11.1 NO and K10.1NC which are connected in series, when the local propulsion is operated, K11 is excited, K10 is demagnetized, a loop is conducted, and the local propulsion operation function is realized. The 2 nd branch at the left side (the part between Z1 and Z4) realizes the self-holding function after the relay K1 acts in a 'pushing action' mode. The 3 rd branch on the left side (part between Z1 and Z4) is formed by K7.1NO and K8.1NC which are connected in series, K7 is excited, K8 is demagnetized, a loop is conducted, and the function of 'propulsion keeping' is realized; and when the compressed air pressure abnormally fluctuates, the 'air source pressure abnormal' relay K8 acts, K8.1NC is disconnected, the loop is disconnected, and the propelling keeping function of the device is shielded. The 4 th branch on the left side (part between Z1 and Z4) is formed by K13.1NO and K10.2NO which are connected in series, and when the remote propulsion control device is operated remotely, K13 is excited, K10 is excited, a loop is conducted, and the remote propulsion operation is realized.

in the middle (part between Z4 and Z8) the 1 st branch is composed of K2.1NC, K3.1NC, K5.1NC and K6.1NC which are connected in series, so that when any one condition of forward and backward interlocking, forward position stop, undervoltage stop propulsion and overtemperature stop propulsion is realized, the normally closed contact is disconnected, the circuit is disconnected, and the propulsion action is stopped. The middle (part between Z4 and Z8) 2 nd branch consists of a forced operation button TB4.1NO, and when the forced operation button is pressed, TB4 is excited, a loop is conducted, and the function of shielding any signal forced propulsion during on-site debugging and overhauling is realized.

The right side (part between Z8 and Z2) in the figure is composed of a coil of a 'propulsion action' relay K1, and the function of propulsion action is realized.

Fig. 6 is a schematic diagram of the exit control portion G6, which is the second branch of the general diagram of the dc control principle of fig. G4. The listed components are located in the P3 local control box of the G1 overall system schematic.

the connections are illustrated as follows:

The left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from the nodes U2+ and U2-in the G5 propulsion control part schematic diagram, and connected with the G7 in-place protection control part schematic diagram through the nodes U3+ and U3. The coil part of the 'withdrawing action' relay K2 is connected in series-parallel combination by a plurality of relay contacts in the middle.

The 1 st branch on the left side of the figure (between Z1 and Z12) is formed by a "local exit" relay K12.1NO connected in series with a "remote local" relay K10.3NC via a node Z11. The 2 nd branch on the left side (the portion between Z1 and Z12) is composed of an "exit action" relay K2.2NO. The 3 rd branch on the left side (between Z1 and Z12) is composed of an "undervoltage" relay K5.2NO. The 4 th branch on the left side (between Z1 and Z12) is composed of an "over temperature" relay K6.2NO. The 5 th branch on the left (between Z1 and Z12) is formed by the "remote exit" relay K14.1NO connected in series with the "remote on-site" relay K10.4NO via node Z15.

The middle (part between Z12 and Z14) 1 st branch is composed of a "push action" relay K1.2NC and a "back to place" relay K4.1NC in series through a node Z13. The middle (section between Z12, Z14) 2 nd branch consists of a force operation button TB4.2NO.

The right side (the section between Z14 and Z2) is composed of the coil of the "exit action" relay K2.

The principle is illustrated as follows:

the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, which are respectively led from the nodes of U2+ and U2-in the schematic diagram of the G5 propulsion control part and are connected with the next part of control loop through the nodes of U3+ and U3-. The coil part of the 'withdrawing action' relay K2 is connected in series-parallel combination by a plurality of relay contacts in the middle.

In the figure, the 1 st branch K12.1NO and K10.3NC on the left side (the part between Z1 and Z12) are connected in series, when the local operation is quitted, K12 is excited, K10 is demagnetized, a loop is conducted, and the local quitting operation function is realized. The 2 nd branch at the left side (the part between Z1 and Z12) realizes the self-holding function after the 'exit action' relay K2 is actuated. And when the 3 rd branch on the left side (the part between the Z1 and the Z12) is excited by K5, the loop is conducted, and the function of automatically exiting under-voltage is realized. And when the 4 th branch on the left side (the part between the Z1 and the Z12) is excited by K6, a loop is conducted, and the overtemperature automatic exit function is realized. The 5 th branch on the left side (part between Z1 and Z12) is formed by K14.1NO and K10.4NO which are connected in series, and when the remote operation is carried out, K14 is excited, K10 is excited, a loop is conducted, and the remote exit operation is realized.

The middle (part between Z12 and Z14) 1 st branch is formed by K1.2NC and K4.1NC which are connected in series, so that the functions of interlocking forward and backward and stopping when the position is retracted are realized. The middle (part between Z12 and Z14) 2 nd branch consists of a forced operation button TB4.2NO, and when the forced operation button is pressed, TB4 is excited, a loop is conducted, and the function of shielding any signal and forcibly exiting during on-site debugging and overhauling is realized.

The right side (part between Z14 and Z2) is composed of a coil of an exit action relay K2, and an exit action function is realized.

Fig. 7 is a schematic diagram of the in-place and protection control portion G7, which is a third branch in the general diagram of the dc control principle of fig. G4. The listed components are located in the P3 local control box of the G1 overall system schematic. Where the content in the dashed box is not in the device. KG3 is a go-to-go travel switch, P8 in the schematic diagram of the whole G1 system. KG4 is a back-to-position travel switch, P7 in the schematic diagram of the whole G1 system. The P5 electric joint pressure gauge is P5 in the G1 overall system schematic diagram. T6 is a temperature protection switch in the protection cylinder of P10 flame TV camera in the whole system diagram of G1.

the connections are illustrated as follows:

the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, and the two main lines are respectively led from a G6 to exit from the U3+ and U3-nodes in the control part schematic diagram and are connected with the G8 propelling self-holding control part schematic diagram through the U4+ and U4-nodes. The middle part is formed by connecting 8 branch lines in parallel.

the 1 st branch is formed by connecting a normally open contact KG3.NO of an in-position travel switch with a coil of an in-position relay K3 in series through a node Z16.

the 2 nd branch is composed of an "enter to go" relay K3.2NO connected in series with an "enter to go" indicator lamp L3 through a node Z17.

And the 3 rd branch is formed by connecting a normally open contact KG4.NO of a return-to-position travel switch with a coil of a return-to-position relay K4 in series through a node Z18.

The 4 th branch is composed of a back-to-position relay K4.2NO and a back-to-position indicator lamp L4 in series through a node Z19.

and the 5 th branch is formed by connecting a normally open contact P5.NO of an electric contact pressure gauge with a coil of an undervoltage relay K5 in series through a node Z20.

The 6 th branch is composed of an undervoltage relay K5.3NO connected in series with an undervoltage indicator lamp L5 through a node Z21.

the 7 th branch is formed by connecting a normally open contact T6.NO of a temperature protection switch with a coil of an over-temperature relay K6 in series through a node Z22.

The 8 th branch is composed of an overtemperature relay K6.3NO and an overtemperature indicator lamp L6 in series through a node Z23.

The principle is illustrated as follows:

when the 1 st branch enters the position, the travel switch KG3 acts, the KG3 normally open contact is closed, the loop is conducted, and the relay K3 is excited.

in the 2 nd branch, when K3 is excited, the K3.2 normally open contact is closed, the loop is conducted, and L3 is lightened to indicate that the propulsion is in place.

and when the 3 rd branch circuit is moved back to the place, the travel switch KG4 acts, the KG4 normally open contact is closed, the loop is conducted, and the relay K4 is excited.

in the 4 th branch, when K4 is excited, the K4.2 normally open contact is closed, the loop is conducted, the L4 is lightened, and the exit is indicated.

In the 5 th branch, when the air source pressure is low, the electric contact pressure gauge acts, the normally open contact is closed, the loop is conducted, and K5 is excited.

and when the branch 6, K5, is excited, the K5.3 normally open contact is closed, the loop is conducted, the L5 is lighted up, and the undervoltage alarm is indicated.

in the 7 th branch, when the temperature is over-temperature, the temperature switch acts, the normally open contact is closed, the loop is conducted, and K6 is excited.

and when the 8 th branch circuit is excited by K6, the K6.3 normally open contact is closed, the loop is conducted, and the L6 is lightened to indicate overtemperature alarm.

Fig. 8 is a schematic diagram of a propelling self-holding control part G8, which is a fourth branch circuit in the general diagram of the direct current control principle of fig. G4. The listed components are located in the P3 local control box of the G1 overall system schematic.

the connections are illustrated as follows:

The left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from G7 to the position, and the nodes U4+ and U4-in the protection control part schematic diagram are connected with the G9 indicator light control part schematic diagram through the nodes U5+ and U5-. The coil part of the 'push and hold' relay K7 is connected in the middle by a plurality of relay contacts and button series-parallel combination.

the 1 st branch on the left side of the figure (section between Z1 and Z25) is composed of a normally closed contact TB3.1NC of an "emergency stop button" connected in series with a "push hold" relay K7.2 NO through a node Z24. In the figure, the 2 nd branch (the part between the Z1 and the Z25) is formed by connecting a propelling action relay K1.3NO with a node Z29, connecting a local propelling relay K11.2NO and a remote propelling relay K13.2NO in parallel, and then connecting the nodes Z29 and Z25 in series.

the middle part of the figure (the part between Z25 and Z26) consists of the normally closed contact tx7.nc of the "push hold throw knob". The middle (portion between Z26 and Z28) 1 st branch of the figure is composed of a "local exit" relay K12.2NC connected in series with a "remote exit" relay K14.2NC via a node Z27. The middle (portion between Z26 and Z28) first branch in the figure is composed of an exit action relay K2.3NC.

The right side (section between Z28, Z2) consists of the coil of a "push-and-hold" relay K7.

the principle is illustrated as follows:

The 1 st branch at the left side (part between Z1 and Z25) is connected in series by TB3.1NC and K7.2 NO, and the self-holding function of a 'push hold' relay K7 is realized. However, when the 'scram' is operated, the TB3.1NC normally closed contact is opened, the circuit is opened, and the 'push hold' memory function is terminated. The 2 nd branch on the left side (part between Z1 and Z25) consists of K1.3NO, K11.2NO and K13.2NO which are connected in series and parallel. The implementation is such that when propulsion is operated locally or remotely and the propulsion action relay has been actuated, the "propulsion hold" function is activated.

The middle part of the figure (the part between Z25 and Z26) realizes the input or cut-off of the function of 'pushing and keeping'. The middle part (part between Z26 and Z28) in the figure is composed of K12.2NC, K14.2NC and K2.3NC which are connected in series and parallel. The implementation is exited by local or remote operation and the exit action relay has been actuated, interrupting the "push hold" function.

The right side (the part between Z28 and Z2) is composed of a coil of a 'push and hold' relay K7, and the function of pushing, memorizing and automatically keeping the push is realized.

Fig. 9 is a schematic diagram of an indicator light control portion G9, which is a fifth branch in the general diagram of the dc control principle of fig. G4. The listed components are located in the P3 local control box of the G1 overall system schematic. Inside the dashed line, k8y.no is "compressed air pressure abnormal fluctuation" and P1 in the figure is the DO signal of the DCS cabinet. And when the signal of abnormal fluctuation of the compressed air pressure does not exist, the K8Y.NO is disconnected, and the K8Y.NO is connected in the opposite direction.

The connections are illustrated as follows:

The left mainline Z1 is DC24V +, the right mainline Z2 is DC24V-, which are respectively led from the G8 to push the U5+ and U5-nodes in the principle diagram of the self-holding control part, and are connected with the principle diagram of the G10 button control part through the U6+ and U6-nodes. The middle is composed of 5 branches connected in parallel.

The 1 st branch is formed by connecting a normally open contact K8Y.NO of 'gas source abnormity' K8Y from a DCS system in series with a coil of a 'gas source abnormity' relay K8 through a node Z30.

The 2 nd branch is composed of an 'air supply abnormity' relay K8.2NO and an 'air supply abnormity indicator lamp' L8 in series connection through a node Z31.

The 3 rd branch consists of a propel ac contactor A11.3NO in series with a "propel light" L1 through node Z31.

The 4 th branch consists of the exit ac contactor A12.3NO connected in series with an "exit indicator light" L2 through a node Z32.

the 5 th branch is formed by connecting an undervoltage relay K5.4NO and an overtemperature relay K6.4NO in parallel, connecting the undervoltage relay K5.4NO with an exit alternating current contactor A12.4NC in series through a node Z34, connecting the undervoltage relay 3625 with an exit position relay K4.3NC in series through a node Z35, and connecting the undervoltage relay 36 with an alarm indicator lamp L9 in series.

The principle is illustrated as follows:

In the 1 st branch, when a 'compressed air pressure abnormal fluctuation' signal comes, the K8Y.NO normally open contact is closed, the loop is conducted, and the excitation function of the relay K8 when the air source pressure is abnormal is realized.

In the 2 nd branch, when the relay K8 is excited when the air source pressure is abnormal, the K8.2NO normally open contact is closed, the loop is conducted, and the L8 is lightened when the air source is abnormal, and the alarm indication function is realized.

In the 3 rd branch, when the propulsion AC contactor A11 is excited, a A11.3NO normally open contact is closed, a loop is conducted, and an indicator lamp L1 lights during propulsion, so that an L1 lighting indication function is realized during propulsion.

In the 4 th branch, when the AC contactor A12 is exited, the A12.3NO normally open contact is closed, the loop is conducted, and the 'exit indicator lamp' L2 is lighted, so that the L2 lighting indication function is realized in the exiting process.

And the 5 th branch circuit realizes that when overtemperature or undervoltage occurs, the AC contactor A12 is withdrawn without excitation action and retreats to a position, the loop is conducted, and an alarm indicator lamp L9 is lightened. And the alarm function under the abnormal dangerous working condition is realized.

Fig. 10 is a schematic diagram of the button control portion G10, which is a sixth branch of the general diagram of the dc control principle of fig. G4. The listed components are located in the P3 local control box of the G1 overall system schematic. And the dotted lines T1Y.NO and T2Y.NO are normally open contacts of P2 remote control box inner buttons T1Y and T2Y in a G1 overall system schematic diagram.

The connections are illustrated as follows:

the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, and the nodes of U6+ and U6-in the schematic diagram of the G9 indicator light control part are respectively led out. The middle part is composed of 7 branch lines which are connected in parallel.

The 1 st branch is formed by connecting a local propulsion relay K11.3NO and a remote propulsion relay K13.3NO in parallel and then connecting a node Z37 and a coil of an interlock door relay K9 in series.

The 2 nd branch is composed of a 'remote/local switching' knob TX10 normally open contact TX10.NO connected in series with a 'remote/local switching' relay K10 coil through a node Z38.

the 3 rd branch is composed of a "power indicator light" L10.

the 4 th branch consists of a "push-in-place" button TB1 normally open contact tb1.no connected in series with a "push-in-place" relay K11 coil through node Z39.

The 5 th branch consists of an in-situ exit button TB2 normally open contact TB2.NO connected in series with an in-situ exit relay K12 coil through a node Z40.

the 6 th branch is formed by connecting a normally open contact T1Y.NO of a remote propulsion button T1Y with a coil of a remote propulsion relay K13 in series through a node Z41.

the 7 th branch is formed by connecting a normally open contact T2Y.NO of a remote exit button T2Y with a coil of a remote exit relay K14 in series through a node Z42.

the principle is illustrated as follows:

in the 1 st branch, when a local propulsion relay K11 or a remote propulsion relay K13 is excited, the loop is conducted, and the interlock door relay is excited.

In the 2 nd branch, when the remote/local switching knob TX10 is screwed to be local, the normally open contact is disconnected, and the device is in a local operation state; when the remote/local switching knob TX10 is screwed to the remote, the normally open contact is closed, the device is in a remote operation state, and the remote/local switching relay K10 coil is excited, so that the remote/local switching function is realized.

the 3 rd branch is composed of a power supply indicator lamp L10, and the function that the power supply indicator lamp L10 lights up when the DC24V power box works normally is realized.

in the 4 th branch, when a pushing button TB1 is pressed, a TB1.NO normally open contact is closed, a loop is conducted, and a coil of a local pushing relay K11 is excited.

in the 5 th branch, when an exit button TB2 is pressed, a TB2.NO normally open contact is closed, a loop is conducted, and a coil of an in-situ exit relay K12 is excited.

In the 6 th branch, when a remote propulsion button T1Y in a remote control box is pressed, a T1Y.NO normally open contact is closed, a loop is conducted, and a coil of a remote propulsion relay K13 is excited.

In the 7 th branch, when a remote exit button T2Y in the remote control box is pressed, a T2Y. NO normally open contact is closed, a loop is conducted, and a coil of a remote exit relay K14 is excited.

fig. 11 is a schematic diagram of a compressed air electric door interlocking control part G11, wherein K4 is a 'back-to-the-position' relay K4 in a schematic diagram of a G7 in-position and protection control part, and K9 is a 'interlocking door opening' relay K9 in a schematic diagram of a G10 button control part.

The connections are illustrated as follows:

K4.1NC wiring is shown in a schematic diagram of a G6 exit control part, K4.2NO wiring is shown in a schematic diagram of a G7 in-place protection control part, K4.3NC wiring is shown in a schematic diagram of a G9 indicator light control part, and K4.4NO wiring is led to Z45 and Z46 in a wiring subgraph of a G2 local control box. The coil part wiring of the relay K4 is shown in a schematic diagram of the in-place protection control part of G7.

K9.1NO wiring leads to G2 in the sub-diagram of the terminals of the local control box at Z43, Z44. The coil part wiring of the relay K9 is shown in a schematic diagram of a button control part of the G10.

The principle is illustrated as follows:

When the flame television has exited the station, the compressed air power door needs to be closed. The return-to-position relay K4 is excited, a K4.4NO normally open contact is closed, and a command of closing the compressed air electric door is sent out through nodes Z45 and Z46.

when the local propulsion relay K11 or the remote propulsion relay K13 is excited, the flame television is about to be propelled to the hearth, and the compressed air electric door needs to be opened at the moment. The relay K9 of "interlock door opening" is excited, the K9.1NO normally open contact is closed, and the instruction of opening the compressed air electric door is sent out through the nodes Z43 and Z44.

FIG. 12 is a schematic diagram of a remote control box and terminal G12, with the listed components located in the P2 remote control box of the overall system schematic of G1.

the connections are illustrated as follows:

Remote cable 08: and a remote communication cable connecting the local control box (P3 in the G1 overall system schematic diagram) and the remote control box (P2 in the G1 overall system schematic diagram) of the device.

Cable 08, core 1, is a common line for DC24V +, leading to local control box Z1. And simultaneously short-circuits the 1 st core with Z48 in cable 09.

The 2 nd core of the cable 08 is connected to the local control box Z30, and the 2 nd core is short-circuited with the Z47 in the cable 09.

Cable 08 No. 3 core Z41 and Z2 are connected to both ends of a "remote push" button T1Y, and Z41 is connected to a local control box.

The cable 08 4 th core Z42 and Z2 are connected to two ends of a remote exit button T2Y, and Z42 is connected to a local control box.

The 5 th core of the cable 08 is a public line of DC24V-, and is led to a local control box Z2.

the 6 th core of the cable 08 is led from a local control box Z17 and Z2 to two ends of an "enter remote indicator lamp" L3Y.

The 7 th core of the cable 08 is led from the local control box Z19 and Z2 to two ends of a 'back to position remote indicator lamp' L4Y.

The 8 th core of the cable 08 is led from a local control box Z21 and Z2 to two ends of an under-voltage remote indicator lamp L5Y.

The 9 th core of the cable 08 is led from a local control box Z23 and Z2 to two ends of an 'over-temperature remote indicator lamp' L6Y.

the 10 th core of the cable 08 is led from a local control box Z31 and Z2 to two ends of an air source abnormal remote indicator lamp L8Y.

the 11 th core of the cable 08 is led from a local control box Z36 and Z2 to two ends of an alarm remote indicator lamp L9Y.

the principle is illustrated as follows:

The cable 09 takes the DO signal "compressed air pressure abnormal fluctuation" of the DCS system. And a signal of abnormal fluctuation of the compressed air pressure is sent to a remote control box by short circuit with the 1 st core and the second core of the cable 08.

When the "remote advance" button T1Y is pressed, a command for remote advance is sent to the remote control box through cable 08 core 3Z 41.

when the "remote exit" button T2Y is pressed, a command for remote exit is sent to the remote control box through the 4 th core Z42 of the cable 08.

When the remote is in position, Z17 carries DC24V + voltage, and the "remote in position" indicator lamp L3Y lights.

When the far back is in place, Z19 carries DC24V + voltage, and the "back to place remote" indicator lamp L4Y lights up.

When the electro-contact pressure gauge is actuated, Z21 has DC24V + voltage, and the 'under-voltage remote' indicator lamp L5Y is lighted.

When the temperature switch is activated, Z23 carries DC24V + voltage, and the 'over-temperature remote' indicator lamp L6Y lights up.

when the DCS 'compressed air pressure abnormal fluctuation' signal acts, Z31 carries DC24V + voltage, and an 'air source abnormal' indicator lamp L8Y is lighted.

When overtemperature or undervoltage occurs, the AC exit contactor A12 has no excitation action and does not retreat to the position, and the Z31 has DC24V + voltage, so that the remote alarm indicator lamp L9Y lights.

According to the figure 1, a cable 01 ~ and other equipment are connected, an L10 power supply indicator lamp is confirmed to be turned on, a knob TX10 is screwed to a 'local' position during field operation, a relay K10 is demagnetized, a knob TX10 is screwed to a 'remote' position during remote operation, a relay K10 is excited, a knob TX7 is screwed to a '1' position when a maintaining function needs to be pushed, a relay K7 is excited, the knob TX7 is screwed to a '0' position without the need of the pushing maintaining function, and a relay K7 is demagnetized.

propelling a flame television camera on site: when a pushing button TB1 of the device is pressed, a relay K11 is excited, a relay K9 is excited, an air source door is opened, an electric contact pressure gauge is reset after pressure is built, the relay K5 is demagnetized, the relay K1 is excited, a pushing indicator lamp is lightened, TB1 is loosened and self-maintained, a contactor A11 is attracted, a motor M rotates forwards, and a flame television camera is pushed. At this time, the push hold relay K7 is excited and self-holds. When the motor is in place, the position-entering travel switch KG3 acts, the relay K3 is excited, the relay K1 is demagnetized, the contactor A11 is separated, and the motor stops rotating. The L3 go to the right indicator light lights up.

Quitting the television camera on site: confirming that the knob TX10 is in a 'on-site' position, clicking an 'exit' button TB2 of the device, exciting a relay K2, self-holding, attracting a contactor A12, reversing a motor, lighting an L2 'exit in-process' indicator light, and exiting a flame television camera. When the motor is in place, the return travel switch KG4 acts, the relay K4 is excited, the compressed air valve is closed in a linkage mode, the relay K2 is demagnetized, the contactor A12 is separated, and the motor stops rotating. The L4 "go back to position" indicator light lights up.

The undervoltage camera automatically quits: when the flame television camera is not in the 'back-to-place' state (the flame television camera can enter the place or can be pushed forward), the air source pressure is insufficient, the electric contact pressure gauge P5 acts, the relay K5 is excited, the relay K2 is excited, the contactor A12 is attracted, the motor rotates reversely, the flame television camera is withdrawn, when the flame television camera is in the back-to-place state, the back-to-place travel switch KG4 acts, the relay K4 is excited, the compressed air valve is closed in a linkage mode, the relay K2 is demagnetized, the contactor A12 is separated, and the motor stops rotating. The L4 "go back to position" indicator light lights up.

The overtemperature camera automatically quits: when the flame television camera is not in the 'back-to-place' state (the flame television camera can enter the place or can be pushed in), the overtemperature protection action is carried out, the temperature switch T6 is carried out, the relay K6 is excited, the relay K2 is excited, the contactor A12 is attracted, the motor rotates reversely, the flame television camera is withdrawn, when the flame television camera is in the back-to-place state, the back-to-place travel switch KG4 is carried out, the relay K4 is excited, the compressed air valve is closed in a linkage mode, the relay K2 is demagnetized, the contactor A12 is separated, and. The L4 "go back to position" indicator light lights up.

Flame television boost hold function: knob TX7 is rotated to the "drop" position. When the flame television camera is pushed or pushed remotely, the push holding relay K7 is excited and self-holds. If the air source pressure is low or the overtemperature protection is withdrawn, the relay K7 still keeps excitation, when the air source pressure is low or the overtemperature signal disappears, and the air source pressure abnormal signal does not exist (the relay K8 is not excited), the relay K1 is excited and self-maintains, the contactor A11 is attracted, the motor M rotates positively, and the flame television camera is pushed forward. When the motor is in place, the position-entering travel switch KG3 acts, the relay K3 is excited, the relay K1 is demagnetized, the contactor A11 is separated, and the motor stops rotating. The L3 go to the right indicator light lights up. Note: the abnormal signal of air supply pressure is taken from the DCS system, comes by the remote operation case, and in the way of some unit flame TV compressed air of my company and soot blower air supply, the compressed air pressure is undulant unusually when leading to blowing the ash to go on, if do not take this signal as the shielding signal that impels to keep, can lead to the flame TV to advance and retreat repeatedly when the air supply pressure is unusual, damages the motor.

The linkage control between the throwing and withdrawing of the flame television camera and the opening and closing of the compressed air door is as follows: when the flame television camera is pushed on site or remotely, TB1 or T1Y is switched on, and a relay K9 is excited. And (3) the compressed air valve is opened in a linkage manner, after the compressed air valve is opened, the air source pressure is established, the under-voltage signal P5 disappears, and the relay K5 is demagnetized. Under any condition, when the flame television camera is withdrawn to the right position, the withdrawing position travel switch acts, the relay K4 is excited, the NO contact of the K4 sends out a signal for closing the compressed air valve in a linkage manner, and the valve is closed.

In-situ scram operation: in the process of putting any flame television camera into operation, if danger occurs and emergency stop is needed, the TB3 'emergency stop' button is pressed, so that the A11 and the A12 of the contactor are demagnetized, the power supply is disconnected, the TB3 does not have a self-holding button, manual reset is needed after normal operation, and the flame television camera continues to advance according to the original advancing direction.

in-situ test operation: when equipment needs to be debugged or checked on site, a TB4 test button is pressed, and TB1 propulsion or TB2 exit is operated at the same time, so that the limit switch can be shielded, the air source pressure is low, over-temperature protection is realized, and forced operation is realized.

remote propulsion of a flame television camera: when the push button T1Y of the device is pressed and the L3Y in-place indicator light is on, the indicator light is loosened, the relay K1 is excited and self-maintained, the contactor A11 is attracted, the motor M rotates forwards, and the flame television camera is pushed. At this time, the push hold relay K7 is excited and self-holds. When the motor is in place, the position-entering travel switch KG3 acts, the relay K3 is excited, the relay K1 is demagnetized, the contactor A11 is separated, and the motor stops rotating. The L3Y go to the right indicator light is on.

remotely quitting the television camera: pressing the exit button T2Y of the device, exciting by a relay K2, self-holding, attracting by a contactor A12, reversing the motor and exiting the flame television camera. When the motor is in place, the return travel switch KG4 acts, the relay K4 is excited, the relay K2 is demagnetized, the contactor A12 is separated, and the motor stops rotating. The L4Y "go back to position" indicator light lights up.

alarm and status indicator lights: the field control box is provided with a power supply indicator lamp L10, an under-voltage indicator lamp L5, an overtemperature indicator lamp L6, an alarm indicator lamp L9, an air source pressure abnormity indicator lamp L8, a propulsion indicator lamp L1, an exit indicator lamp L2, an arrival indicator lamp L3 and a departure indicator lamp L4. The remote control box is provided with an under-voltage indicator lamp L5Y, an overtemperature indicator lamp L6Y, an alarm indicator lamp L9Y, an air source pressure abnormity indicator lamp L8Y, a forward position indicator lamp L3Y and a backward position indicator lamp L4Y. The alarm indicator lamp is lighted when under-voltage and over-temperature conditions exist and the camera does not retreat or retreat in place.

Claims

1. the utility model provides a self-sustaining formula furnace flame TV control device that moves on and off which characterized in that:

A box internal connection terminal G2 is controlled in situ: wherein Z1-Z48 are nodes within the DC control loop; J51-J59 are nodes in the alternating current loop, the serial number of the lower row is an external device identifier, and the lower row is described as an external device description;

The 1 st branch, namely a 24V direct-current power supply branch, is composed of a DC24V power supply box, and Z1 and Z2 output lines of the power supply box are taken as main lines of a direct-current control part and are respectively led to U1+ and U1-in the direct-current control part;

Fourth direct current control G4: the left main line is U1+, the right main line is U1-, and the two main lines are respectively connected with output Z1 and Z2 lines of a power box of a1 st branch '24V direct-current power supply branch' in the G3 alternating-current control part; the left node U1+, U2+, U3+, U4+, U5+, U6+ are equipotential and are DC24V +; the right side node U1-, U2-, U3-, U4-, U5-, U6-equipotential is DC 24V-; comprises a push control part G5, an exit control part G6, a put-in-place and protection control part G7, a push self-holding control part G8, an indicator light control part G9 and a button control part G10;

first, the propulsion control portion G5: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, which are respectively connected with the nodes U1+ and U1-in the direct current control G4 and are connected with the exit control part of the next part G6 through the nodes U2+ and U2; the middle of the relay is connected with a coil part of a 'propulsion action' relay K1 by a plurality of relay contacts in series-parallel combination;

② the exit control portion G6: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from the nodes U2+ and U2-in the G5 propulsion control part, and is connected with the G7 in-place and protection control part through the nodes U3+ and U3; the middle of the relay is connected with a coil part of an exit action relay K2 by a plurality of relay contacts in series-parallel combination;

③ the in-place and protection control part G7: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, which are respectively led from a G6 to exit from the U3+ and U3-nodes in the control part and are connected with the G8 propelling self-holding control part through the U4+ and U4-nodes; the middle part is formed by connecting 8 branch lines in parallel;

(iv) the advancing self-holding control portion G8: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, respectively led from G7 to the position, protects U4+ and U4-nodes in the control part, and is connected with the control part of the G9 indicator light through the U5+ and U5-nodes; the middle of the relay is connected with a coil part of a 'push and hold' relay K7 by a plurality of relay contacts and buttons in series-parallel combination;

Fifth indicator light control part G9: the left main line Z1 is DC24V +, the right main line Z2 is DC24V-, which are respectively led from the nodes U5+ and U5-in the G8 propelling self-holding control part and are connected with the G10 button control part through the nodes U6+ and U6; the middle part is formed by connecting 5 branch lines in parallel;

the 3 rd branch is composed of a power indicator lamp L10;

Fifthly, interlocking control part G11 of the compressed air electric door: K4.1NC wiring is connected with a G6 exit control part, K4.2NO wiring is connected with a G7 in-place protection control part, K4.3NC wiring is connected with a G9 indicator light control part, and K4.4NO wiring is led to Z45 and Z46 in a G2 local control box wiring terminal; the coil part of the relay K4 is wired to a G7 in-place and protection control part;

cable 09: and connecting the DO signal in the P1DCS cabinet.