CN105609368B - A kind of gas density relay with gas density level indicator - Google Patents
A kind of gas density relay with gas density level indicator Download PDFInfo
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- CN105609368B CN105609368B CN201510843187.6A CN201510843187A CN105609368B CN 105609368 B CN105609368 B CN 105609368B CN 201510843187 A CN201510843187 A CN 201510843187A CN 105609368 B CN105609368 B CN 105609368B
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- gas density
- gas
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- level indicator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/32—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by bellows
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of gas density relays with gas density level indicator, shell including gas density relay, several microswitches, the regulating mechanism corresponding with microswitch being arranged in the shell, it further includes the gas density level indicator relatively independent with density monitor signal control portion, including indicator, circuit module.Wherein the signal contact of density monitor signal control portion is two pairs at least independent, and wherein at least a pair is connected to gas density level indicator, can show its contact action state by gas density level indicator, and then show that gas density is horizontal.Wherein at least another pair individually exports, and completes the signal output function of density monitor.Due to the design using indicator and density monitor ontology separate type so that it can be preferably integrated with electrical system, is mounted on the metal decking of instrument cabinet so that circuit part is separated with gas circuit part on installation space, is met more occasions and is used.
Description
Technical field
The present invention relates to a kind of equipment of the monitoring closed density of insulating gas of electric product, more particularly to one kind realizes close
The gas density relay for spending relay and gas density level indicator separate design, belongs to gas density relay field.
Background technology
Electric product has been widely used the fast development that power industry is promoted in power department, industrial and mining enterprises.Ensure electricity
The reliable and secure operation of gas product has become one of vital task of power department.The arc-extinguishing medium and dielectric of electric product
It is gas, gas leakage cannot occurs, if gas leakage occurs, cannot ensure the reliable and secure operation of electric product, so the electrical production of monitoring
The density value of product is very necessary.And gas density relay is for monitoring the closed insulated cavity interior insulation medium of electric product
The device of gas density and pressure.The closed insulated cavity interior insulation dielectric gas of electric product is a kind of arc-extinguishing medium, is to ensure electricity
The essential gas of gas product reliability service, is especially applied in SF6/N2On the products such as ring main unit.Current existing gas
Density monitor mostly uses the monitoring arrangement for the pointer header reading that integrally connected is formed with relay, and gas density numerical value is logical
The meter pointer crossed on casing of relay indicates that the gas density relay indicator of this integrated design exists in use
Problems.
Publication number is that the patent document of CN2519397Y discloses a kind of pointer-type SF6Gas density relay, this gas
Volume density relay includes spring seat, shell, the temperature-sensing pipe in shell, measurement pipe, movement assembly, the table being connect with temperature-sensing pipe
Disk, pointer, temperature-sensing probe and postposition type electric contact arrangement, measurement pipe fixing end connect with spring seat and connect with pressure tap
Logical, measurement pipe free end is linked together with temperature-sensing pipe fixing end, and shell is made of annular solid, protecgulum and rear cover, and dial plate passes through vertical
Column is fixed on spring seat.Above-mentioned gas density monitor reduces influence of the variation of ambient temperature to gauge outfit indicating value, still
The scheme of the mechanical drive mode and relay of meter pointer and gauge outfit integrated design gives accuracy and the convenience band of reading
Adverse effect is carried out.
Publication number is that the patent document of CN104681351A discloses a kind of high-precision sulfur hexafluoride gas convenient for reading
Density monitor, this gas density relay include shell, pressure transformation mechanism, temperature compensation mechanism, transmission mechanism, contact
Trigger mechanism and data indication mechanism, temperature compensation mechanism are connect with the pressure transformation mechanism in shell, and contact trigger mechanism is logical
It crosses transmission mechanism to connect with temperature compensation mechanism, data indication mechanism is connect by transmission mechanism with temperature compensation mechanism, data
Indication mechanism includes that pressure sensor, wiring board and digital display terminal, pressure sensor are mounted on pressure transformation mechanism, number
On shell, pressure sensor is connect by wiring board with digital display terminal word terminal.This gas density after
Although electric appliance realizes the digitlization of reading, but the scheme that its relay used is integrally designed with data indication mechanism is two
Easy to produce and interfere with each other between person, cause the bad cooperation to interact, and staff must be close to relay could be into
Row reading, monitoring convenience is bad, is especially necessarily mounted at the place of observation window just it is observed that reading.For some rings
Net cabinet causes to be not suitable for using this density monitor because its structure design reason, corresponding position do not have observation window.
Publication number is that the patent document of CN204577337U discloses a kind of novel oil-free antivibration gas density relay, this
Kind of gas density relay include pedestal, bourdon tube, temperature-compensating plate, damping movement, pointer, watchcase, lining ring, screw, scale,
Electrical contact switch, the cover, safety glass, connecting terminal and sealing ring, bourdon tube one end are connected on pedestal, the bourdon tube other end
Connect temperature-compensating plate, be located at damping movement on pedestal and be equipped with pointer, watchcase, the cover and safety glass formed accommodate scale,
The shell of bourdon tube and damping movement.This gas density relay can be applied in vibrating larger work condition environment, but also
It is not overcome the problems, such as that relay is integrally designed the reading accuracy brought and convenience with gauge outfit.
Invention content
Gas density relay of the present invention with gas density level indicator discloses new scheme, using by relay
The scheme separately designed with indicator, the relay for solving existing integrated design scheme are interfered with each other with indicator, and gauge outfit is read
The problems such as number accuracy is not high and monitoring is inconvenient.
The invention is realized in this way：
Patent right book
Gas density relay of the present invention with gas density level indicator includes the gas density to form signal connection
Relay and the gas density level indicator being located at outside gas density relay.Gas density relay includes air inlet connecting
Head, shell, seal cavity, a bellows, several microswitches, signal regulation mechanism and wire outlet seat.Bellows, microswitch
It is set in the seal cavity in shell with signal regulation mechanism.Signal regulation mechanism is correspondingly arranged with microswitch, microswitch
Signal wire drawn by wire outlet seat, sealed set between wire outlet seat and seal cavity.The wherein passive letter of gas density relay
Number contact is two pairs at least independent, and wherein at least a pair of of passive signal contact is connected to gas density level indicator, passes through
Gas density level indicator can show its contact action state, and then show that gas density is horizontal, and wherein at least another
Passive signal contact is individually exported, the signal output function of density monitor is completed.
Further, gas density level indicator includes shell, the control panel that is located on shell one end face and is located at shell
The control circuit module in internal portion, control circuit module are electrically connected with control panel, and control panel is equipped with LCD/LED display screens
Control electricity is sent to by signal wire with the signal of test switch button, at least a pair of of passive signal contact of gas density relay
Road module, control circuit module are sent to control panel after being handled the gas density signal received, control panel will be received
To signal shown by LCD/LED display screens.
Further, control circuit module includes power module, LCD/LED driver modules, switch button module, protection
Circuit and signal port module, power module with LCD/LED driver modules for being electrically connected, LCD/LED driver modules
According to receive switch button module transmission come outer triggering signal to LCD/LED display screens send start examine or closing
Signal, LCD/LED driver modules according to the signal port module that receives transmit come gas density signal handled after
It is sent to LCD/LED display screens to show, protection circuit is electrically connected to form monitoring and protecting circuit with LCD/LED driver modules.
Further, the first end connection signal regulating mechanism of bellows.Wherein, the first end sealing of bellows, bellows
Second end be connected with electrical equipment and seal chamber is filled with compensation gas, alternatively, the first end and second end of bellows
It all seals, seal cavity is connected with electrical equipment and in bellows filled with compensation gas.
Further, gas density relay further includes：Spring and spring fixed seat.One end of spring be connected to bellows with
The other end of one end that signal regulation mechanism is connected, spring is connected to spring fixed seat.
Further, enclosure interior is additionally provided with gas pressure sensor and gas temperature sensor, gas pressure sensor and
The gas pressure that monitoring obtains and temperature signal are sent to LCD/LED by signal port module and shown by gas temperature sensor
Drive module, LCD/LED driver modules are sent to LCD/ after being handled according to the gas pressure and temperature signal that receive
LED display is shown.
Further, the shell of gas density relay is the closed tubular structure in one end.
Further, the shell of gas density relay is equipped with signal line three-way hole, and signal line three-way hole interior sealing is equipped with tubular
Wire outlet seat, signal wire seal vent density monitor by tubular wire outlet seat.
Further, sealing ring, inlet suction port and housing seal are equipped at tubular wire outlet seat and signal line three-way hole sealed connection
Connectivity part is equipped with sealing ring and forms removable seal connection.
Further, gas density relay further includes the gas density dial gauge being arranged in the shell of relay, gas
Density dial gauge includes movement, indicator and dial, and movement is sequentially connected with signal regulation mechanism, and indicator is installed on movement
Above and before dial.
Gas density relay of the present invention with gas density level indicator uses and separately sets relay and indicator
The scheme of meter overcomes relay and the problem of indicator interacts, while can as needed be installed to indicator and be convenient for
The position of monitoring has the characteristics that accuracy of reading and monitoring are convenient.And gas density relay can be Purely mechanical, not be afraid of
Interference is more not necessarily to power supply, significantly facilitates application and improves reliability.So this gas with gas density level indicator
The research and development success of density monitor has greatly enriched electrical equipment and (has especially been not suitable for the pointer using machinery in some structures
The ring main unit of formula gas density relay) application, to ensure the reliable and secure work of electrical equipment play an important role.
In addition illustrate, a kind of gas density relay with gas density level indicator of the present invention includes band gas
The gas density relay of volume density level indicator and mixed gas density monitor with gas density level indicator.Institute
The gas stated includes SF6、N2, compressed air, mixed gas or other insulating gas.
In addition, the present invention can show gas with combination pressure, temperature sensor on gas density level indicator
Density value and/or pressure value and/or temperature value.In short, density value, pressure value, temperature value can be shown in any combination, so as to
It can fully understand its density value or pressure value or temperature value.
Description of the drawings
Fig. 1 is the gas density relay part section structure with gas density level indicator of the embodiment of the present invention one
Schematic diagram.
Fig. 2 is the control circuit module circuit diagram of gas density level indicator.
Fig. 3 is the gas density relay part section structure with gas density level indicator of the embodiment of the present invention two
Schematic diagram.
Fig. 4 is the gas density relay part section structure with gas density level indicator of the embodiment of the present invention three
Schematic diagram.
Specific implementation mode
In order to preferably understand technical scheme of the present invention, below by specifically embodiment and in conjunction with attached drawing
The present invention is described in detail：
Refer to Fig. 1 and Fig. 2, a kind of gas density relay with gas density level indicator of the invention mainly by
Gas density level indicator B relatively independent with gas density relay gas density relay A is formed.The gas density
Level indicator includes shell 40, indicator 41, circuit module 42.Indicator 41 and circuit module 42 are mounted on shell 40.
The signal contact (passing through signal wire 16) of wherein gas density relay has independent 4 pairs, wherein 2 pairs to be connected to gas close
Level indicator is spent, its contact action state can be shown by gas density level indicator, and then show gas density water
It is flat.And wherein another 2 pairs individually outputs, complete the signal output function of density monitor.
Circuit module 42 is mainly by LED (or LCD) driving circuit 43, button 44, connector 45, power supply 46 and protection circuit
47 compositions.Its schematic diagram is Fig. 2, the circuit part of gas density level indicator B mainly by LED (or LCD) indicator 41,
LED (or LCD) driving circuit 43, button 44, connector 45, power supply 46 and protection circuit 47 are constituted.Power supply 46 can be built-in
, i.e., it need not be external, power supply 46 can be specifically battery (such as lithium battery, solar cell (amorphous silicon solar cell plate), charging
Battery, general battery etc.) or piezoelectric patches etc..Power supply 46 can also be it is external, that is, use power supply system on power supply (exchange or
Direct current).2 pairs of signal contacts of gas density relay are connected on the connector 45 of gas density level indicator.Specifically,
When button is pressed, LED (or LCD) drive circuit works are lighted according to the contact point signal of density monitor (or density switch)
LED (or LCD), the output phase should indicate information on LED (or LCD) indicator.Gas density level indicator, with density relay
The on-off model of the contact of device inputs, and contact state is shown with character type LED (or LCD).The 2 of density monitor in present case
Docking point is connected to by 4 core cables on connector 45, can be horizontal with two-stage instruction, density monitor (or density
Switch or pressure switch) normal opened contact on, pass through character type LED (or LCD) display so that do not need additional auxiliary and say
It is bright, so that it may with hommization to obtain low pressure alarming two-stage threshold level information.It can be shown by gas density level indicator
Its contact action state, and then show that gas density is horizontal.Protection circuit according to circumstances can be omitted.
Due to using indicator and density monitor ontology separate type design so that it can preferably with electrical system
It is integrated, it is mounted on the metal decking of electrical equipment, so that circuit part is divided with air path part on installation space
It opens.Good sealing and comprehensive are dielectrically separated from design so that it may be mounted at high dust, high temperature difference variation, HI high impact
With the occasion of vibrations.Using the key switch of high life, good lithium battery, and the low-power consumption LED (or LCD) of original creation are indicated
Circuit, it is ensured that it can be with long-term stable operation.When battery capacity deficiency, the trepanning at the back side can easily replace battery.It is excellent
Good appearance design and stainless steel watch shell material, good appearance is easily installed, and internal circuit is protected to keep it permanent steady well
Surely it works.
For gas density relay, the present embodiment is by taking the density monitor of microswitch there are four bands as an example.
Fig. 1 is referred to, a kind of gas density relay with gas density level indicator of the embodiment of the present invention one should
Gas density relay includes：Shell 29, seal cavity 30, bellows 31,4 microswitches 32A, 32B, 32C, 32D, signal
Regulating mechanism 33, spring 34, spring fixed seat 35, outlet pedestal 36 and inlet suction port 37.Filled with benefit in the seal cavity 30
Gas is repaid, the bellows 31, described microswitch 32A, 32B, 32C, 32D and the signal regulation mechanism 33 are set to described close
It seals in cavity 30；The signal regulation mechanism 33 is correspondingly arranged with described microswitch 32A, 32B, 32C, 32D, and the fine motion is opened
The signal wire for closing 32A, 32B, 32C, 32D is drawn by the outlet pedestal 36, the outlet pedestal 36 and the seal cavity
30 sealed sets；One end (first end) of the bellows 31 is sealing, i.e., sealing welding is connected to closeouts 31A, closeouts
The 31A connections signal regulation mechanism 33, i.e. signal regulation mechanism 33 are connected on the closeouts 31A of bellows 31.The wave
The other end (second end) of line pipe 31 is welded with closeouts 31B, closeouts 31B inlet suction ports 37 and sulfur hexafluoride electrical equipment phase
Connection, the seal cavity 30 are interior filled with compensation gas.One end of the spring 34 be connected to the signal regulation mechanism 33 with
The one end of the closeouts 31A of the bellows 31 being connected, the other end of the spring 34 are fixedly connected on the spring and consolidate
Reservation 35, the spring fixed seat 35 have the function of adjustment spring, can (adjustment spring is long with adjustment spring pretightning force
Degree), once regulated, so that it may to fix spring.Spring fixed seat 35 has signal regulation mechanism 33 to be oriented to and make simultaneously
With.The spring fixed seat 35 be fixedly installed between the bellows 31 and described microswitch 32A, 32B, 32C, 32D (or
The spring fixed seat 35 is fixedly installed in the one of both the bellows 31 and described microswitch 32A, 32B, 32C, 32D
Side or described microswitch 32A, 32B, 32C, 32D be fixedly installed in the bellows 31 and the spring fixed seat 35 it
Between).The signal regulation mechanism 33 is also provided with adjusting screw 33A, and adjusting screw 33A is adjusting the report of density monitor
Alert, block signal contact working value.The signal contact action of described microswitch 32A, 32B, 32C, 32D pass through outlet pedestal 36
It is drawn out to respectively on gas density level indicator on electrical equipment by signal wire 16, in the present embodiment one, there is independent 2 pairs of letters
Number contact (corresponding microswitch is 7B, 7D) is connected on the connector 45 of gas density level indicator, also independent 2 pairs of letters
Number contact (corresponding microswitch is 7A, 7C) is connected on electrical equipment, completes alarm locking effect.The density monitor may be used also
With connection signal teletransmission circuit, to realize the on-line monitoring of sulfur hexafluoride density.The bellows 31 includes bellows 31, one end
The closeouts 31A of (first end), the closeouts 31B of the other end (second end).
The operation principle of the gas density relay of the embodiment of the present invention is：Bellows 31 is transmitted mainly as gas pressure
Device realizes that spring 34 is used as pressure main pressure measuring cell, into one by using the combination of bellows 31 and spring 34
Step improves measuring accuracy.Intracavitary gas pressure declines in bellows 31, by closeouts 31A, the signal being connect with bellows 31
Regulating mechanism 33 triggers microswitch under the action of the temperature compensating gas (seal chamber is filled with temperature compensating gas)
Become by the signal communication connection transmission gas density between the gas density relay and the gas density level indicator
Change signal.I.e. if electrical equipment does not have gas leakage, the signal contact of microswitch 32A, 32B, 32C, 32D to be failure to actuate, gas is close
Degree relay does not just send out warning block signal；If electrical equipment gas leakage, when the gas density in electrical equipment is close or
Less than the compensation gas in seal cavity 30 density when, the signal contact of microswitch 32A, 32B, 32C, 32D just act, gas
Volume density relay is issued by warning block signal, it is ensured that power grid security.
Fig. 3 is referred to, a kind of gas density relay with gas density level indicator of the embodiment of the present invention two should
Gas density relay is compared with embodiment one, only bellows 31, without spring 34.Spring fixed seat 35 has changed guiding into
Part 38, guide part 38 have guiding role to signal regulation mechanism 33.The work of the gas density relay of the embodiment of the present invention two
It is as principle：Bellows 31 is mainly as gas pressure measurement element.Intracavitary gas pressure declines in bellows 31, passes through closure
Part 31A, in the temperature compensating gas, (seal chamber is filled with temperature-compensating to the signal regulation mechanism 33 being connect with bellows 31
Gas) under the action of triggering microswitch pass through the letter between the gas density relay and the gas density level indicator
Signal communication connection transmission gas density variable signal.I.e. if electrical equipment does not have gas leakage, microswitch 32A, 32B, 32C, 32D
Signal contact be failure to actuate, gas density relay does not just send out warning block signal；And if electrical equipment gas leakage, work as electricity
When gas density in gas equipment is near or below the density of the compensation gas in seal cavity 30, microswitch 32A, 32B,
The signal contact of 32C, 32D just act, and gas density relay is issued by warning block signal, it is ensured that power grid security.
Fig. 4 is referred to, a kind of gas density relay with gas density level indicator of the embodiment of the present invention three should
Compared with embodiment one, outlet pedestal 36 is arranged in the side of closeouts 31B, i.e. lead-out wire and air inlet connecting gas density relay
First 37 in the same side.In addition, outlet pedestal 36 can also be arranged in housing sidewall.
In addition the embodiment of the present invention, the spring fixed seat be fixedly installed in the bellows and the microswitch it
Between.Or it can be with one end of the spring is connected on the bellows, and the other end of the spring is connected to the spring and fixes
Seat；Or it can be with one end of the spring is connected in the signal regulation mechanism, and the other end of the spring is connected to the bullet
Spring fixed seat.
The gas density relay of the embodiment of the present invention can also include：Set on being independently arranged for the seal cavity side wall
Indicating value indication mechanism (no figure).The indicating value indication mechanism includes：Movement, dial and pointer.The movement and the letter
The connection of number regulating mechanism, the pointer are installed on the movement and before the dials, to realize that density indicating value is aobvious
Show function.
The present invention innovative point be：Control section and gas in density monitor with gas density level indicator is close
Degree level indicator carries out independent design in structure.So that gas density level indicator works together with control section
Mutually unaffected, control section is connected on electrical equipment, is sealing in gas circuit.And gas density level indicator
Part is not to be connected with each other with electrical equipment in gas circuit, its installation site is unrestricted.It thus can be in any sky
Not busy position installation, flexibility are very high.Its contact of the density monitor both may be coupled to alarm locked loop simultaneously, work as electricity
Gas equipment (such as SF6 or N2Ring main unit) it leaks air, corresponding signal (alarm or locking) can be sent out in time, reached certainly
Gas density in the equipment such as dynamic monitoring and control electric switch, makes electrical equipment trouble free service；And gas density level indicates
Device may be mounted at the place of an easy operation, when patrol officer's inspection on duty, again/or can to pass through gas density horizontal
Indicator understands the operating condition of electrical equipment (ring main unit)：Whether its gas is normalEither with or without leakingIt is set when electrically
Standby (ring main unit) leaks air, and can find at any time, and it is close to reach the gas for monitoring and being controlled in the equipment such as electric switch at any time
Degree, makes electrical equipment trouble free service.And gas density relay can be Purely mechanical, not be afraid of interference, more be not necessarily to power supply,
It significantly facilitates application and improves reliability.So the research and development of this gas density relay with gas density level indicator at
Work(has greatly enriched electrical equipment and (has especially been not suitable for using mechanical pointer gas density relay in some structures
Ring main unit) application, to ensure the reliable and secure work of electrical equipment play an important role.
The gas density level indicator that the art is stated is to know each working value of density monitor
Contact state, so could also say that a kind of density monitor with contact state display.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention
, and be not used as implementing the above as long as in the spirit of the present invention for the restriction to the utility model
Variation, the modification of example will all be fallen within the scope of claims of the present invention.As microswitch can also be fixed on regulating mechanism
Above or below；Bellows can also be substituted by Baden pipe, and temperature-compensating adds temperature-compensating plate to realize by sealing gas.
Claims (10)
1. a kind of gas density relay with gas density level indicator, it is characterized in that the gas including forming signal connection
Density monitor and the gas density level indicator being located at outside the gas density relay；The gas density relay
Including inlet suction port, shell, seal cavity, a bellows, several microswitches, signal regulation mechanism and wire outlet seat；It is described
In the seal cavity that bellows, the microswitch and the signal regulation mechanism are disposed in the housing；The Signal Regulation
Mechanism is correspondingly arranged with the microswitch, and the signal wire of the microswitch is drawn by the wire outlet seat, the wire outlet seat
The sealed set between the seal cavity；
Wherein the passive signal contact of gas density relay is two pairs at least independent, wherein at least a pair of of passive signal contact
It is connected to gas density level indicator, its contact action state, Jin Erxian can be shown by gas density level indicator
Show gas density level, and wherein at least another pair passive signal contact individually exports, and completes the signal output of density monitor
Function.
2. the gas density relay according to claim 1 with gas density level indicator, which is characterized in that described
The control panel and be located at the enclosure interior that gas density level indicator includes shell, is located on the shell one end face
Control circuit module, the control circuit module are electrically connected with the control panel, and the control panel is aobvious equipped with LCD/LED
The signal of display screen and test switch button, at least a pair of of passive signal contact of the gas density relay is transmitted by signal wire
To the control circuit module, the control circuit module is sent to the control after being handled the gas density signal received
Panel processed, the control panel show the signal received by the LCD/LED display screens.
3. the gas density relay according to claim 2 with gas density level indicator, which is characterized in that described
Control circuit module includes power module, LCD/LED driver modules, switch button module, protection circuit and signal port
Module, the power module with the LCD/LED driver modules for being electrically connected, the LCD/LED driver modules root
The outer triggering signal come according to the switch button module transmission received is sent to the LCD/LED display screens to be started or examines
Or shutdown signal, the LCD/LED driver modules according to the signal port module that receives transmit come gas density
Signal is sent to the LCD/LED display screens and shows after being handled, the protection circuit and LCD/LED display driving moulds
Block is electrically connected to form monitoring and protecting circuit.
4. the gas density relay according to claim 1 with gas density level indicator, which is characterized in that described
The first end of bellows connects the signal regulation mechanism；Wherein, the first end sealing of the bellows, the bellows the
Two ends are connected with electrical equipment and the seal chamber is filled with compensation gas, alternatively, the first end of the bellows and
Two ends all seal, and the seal cavity is connected with electrical equipment and in the bellows filled with compensation gas.
5. the gas density relay according to claim 1 with gas density level indicator, which is characterized in that described
Gas density relay further includes：Spring and spring fixed seat；One end of the spring is connected to the bellows and the letter
One end that number regulating mechanism is connected, the other end of the spring are connected to the spring fixed seat.
6. the gas density relay according to claim 3 with gas density level indicator, which is characterized in that described
Enclosure interior is additionally provided with gas pressure sensor and gas temperature sensor, the gas pressure sensor and gas temperature sensing
Device sends the gas pressure that monitoring obtains and temperature signal to the LCD/LED displays driving by the signal port module
Module, the LCD/LED driver modules are sent to described after being handled according to the gas pressure and temperature signal that receive
LCD/LED display screens are shown.
7. the gas density relay according to claim 1 with gas density level indicator, which is characterized in that described
The shell of gas density relay is the closed tubular structure in one end.
8. the gas density relay according to claim 7 with gas density level indicator, which is characterized in that described
The shell of gas density relay is equipped with signal line three-way hole, and the signal line three-way hole interior sealing is equipped with tubular wire outlet seat, described
Signal wire seals gas density relay described in pass-out by the tubular wire outlet seat.
9. the gas density relay according to claim 8 with gas density level indicator, which is characterized in that described
Tubular wire outlet seat is connected to sealing ring, the inlet suction port is equipped at the signal line three-way hole sealed connection with the housing seal
Place is equipped with sealing ring and forms removable seal connection.
10. the gas density relay according to any one of claim 1 to 9 with gas density level indicator,
It is characterized in that, the gas density relay further includes the gas density dial gauge being arranged in the shell of relay, institute
It includes movement, indicator and dial to state gas density dial gauge, and the movement is sequentially connected with the signal regulation mechanism, institute
Indicator is stated to be installed on the movement and before the dial.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843187.6A CN105609368B (en) | 2015-11-26 | 2015-11-26 | A kind of gas density relay with gas density level indicator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843187.6A CN105609368B (en) | 2015-11-26 | 2015-11-26 | A kind of gas density relay with gas density level indicator |
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| CN105609368A CN105609368A (en) | 2016-05-25 |
| CN105609368B true CN105609368B (en) | 2018-10-19 |
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Families Citing this family (6)
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| CN109213214B (en) * | 2017-07-03 | 2024-04-02 | 国网安徽省电力公司电力科学研究院 | A mixed gas density controller |
| CN107863270A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay and its installation method of middle part outlet |
| CN109031108A (en) * | 2018-07-17 | 2018-12-18 | 中国南方电网有限责任公司超高压输电公司南宁局 | A kind of auxiliary device and method for not dismantling SF6 density monitor rapid verification |
| CN110491724B (en) * | 2019-09-04 | 2024-07-23 | 上海乐研电气有限公司 | A remote gas density relay system and calibration method thereof |
| CN110850278A (en) * | 2019-09-04 | 2020-02-28 | 上海卓电电气有限公司 | Electromechanical integrated gas density relay |
| CN114496646B (en) * | 2022-02-18 | 2024-07-02 | 朗松珂利(上海)仪器仪表有限公司 | Remote-transmission type gas density relay |
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| CN204230153U (en) * | 2014-10-21 | 2015-03-25 | 上海乐研电气科技有限公司 | A kind of high antivibration sulfur hexafluoride gas density relay |
| CN104282485A (en) * | 2014-10-31 | 2015-01-14 | 国家电网公司 | Remote-transmission sulfur hexafluoride gas density relay |
| CN104681351A (en) * | 2015-02-05 | 2015-06-03 | 上海上芃电气有限公司 | Convenient-to-read high-accuracy sulfur hexafluoride gas density relay |
| CN205177706U (en) * | 2015-11-26 | 2016-04-20 | 上海乐研电气科技有限公司 | Take gas density level -indicator's gas density relay |
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