CN111457488A - A high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system and method - Google Patents

Abstract

The invention relates to a high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system and method. The system includes a heat insulation wind cabinet, and the heat insulation wind cabinet is divided into a central heating channel and a dehumidification channel on both sides by a refrigeration component. The refrigeration component and the central heating channel The contact side of the channel is the hot air surface, and the side in contact with the dehumidification channel is the cooling surface. The bottom ends of the dehumidification channels on both sides are connected with the condensate water discharge pipe, and one end of the condensate water discharge pipe is also provided with a drain solenoid valve. The machine and the temperature and humidity sensing device in the valve hall are connected with the control end, and the heating channel in the middle and the dehumidification channels on both sides are connected with the air in the valve hall. It realizes the energy-saving operation of the central air-conditioning system, saves a lot of air-conditioning operating costs, and saves a lot of electric energy.

Description

A high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system and method

technical field

The invention relates to a dehumidification and temperature compensation system, in particular to a high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system, and a dehumidification and temperature compensation method, which belongs to the field of air conditioners.

Background technique

In the valve hall of the converter station of the power system, the central air-conditioning system, and the central air-conditioning system of the large shopping mall, when the indoor humidity is too high or too low, it may cause damage to the expensive converter valve, or may cause other unpackaged rice in the shopping mall. Grain or food shortens the shelf life and damage, so it is necessary to seriously control the air humidity in the valve hall of the power system, central air conditioning, and large shopping malls, so that the temperature and humidity are within a reasonable range.

Generally, when the humidity in the valve hall or indoors is high, the central air conditioner uses compressor refrigeration to remove the moisture in the air, and the temperature will also decrease. no significant effect. The method is to add an electric heater to the inner cabinet of the central air conditioner. The power of the electric heater is very large. The power of a central air-conditioning heater is as small as tens of kilowatts, and the power of a large one reaches hundreds of kilowatts. When dehumidifying, it will cause a great waste of electric energy.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system and method. The technical solutions of the present invention are as follows:

A high-efficiency and energy-saving intelligent valve hall air-conditioning dehumidification and temperature-replenishing system, comprising an insulating air cabinet, the heat insulating air cabinet is divided into a central heating channel and two dehumidification channels by a refrigeration component, and the surface of the refrigeration component in contact with the central heating channel is a hot air surface, The side in contact with the dehumidification channel is the refrigerating surface, and the bottom ends of the dehumidification channels on both sides are connected with the condensate water discharge pipe. One end of the condensate water discharge pipe is also provided with a drain solenoid valve, refrigeration components, drain solenoid valve, air conditioner compressor and the temperature and humidity in the valve hall. The induction device is connected to the control end, and the heating channel in the middle and the dehumidification channels on both sides are connected to the air in the valve hall. When the indoor temperature reaches a certain value, the control end stops the air conditioner compressor, and the air returning from the left and right sides of the valve hall enters the two chambers. The side dehumidification channel is in contact with the cooling surface. After the air is cooled, the water molecules in it condense into water droplets and fall down, which are then discharged through the condensate discharge pipe. The air returning from the middle of the valve hall enters the central heating channel. The air is mixed together to remove moisture from the circulating air.

Further, the refrigeration assembly includes condensers arranged on both sides of the middle of the heat-insulating air cabinet, the condenser includes a semiconductor refrigeration sheet group, both ends of the semiconductor refrigeration sheet group are arranged on the cold and hot air partitions, and one side of the semiconductor refrigeration sheet group is for refrigeration. The other side is the hot air side, and the condensers on both sides are connected to the power supply.

Further, the temperature and humidity sensing device in the valve hall includes a first humidity sensing device, a second humidity sensing device, a first temperature sensing device and a second temperature sensing device.

Further, the first humidity sensing device, the second humidity sensing device, the first relay, the first temperature sensing device and the second temperature sensing device are connected to each other, and the first humidity sensing device and the second temperature sensing device are respectively connected to the positive and negative power supply. terminals, the wiring corners at both ends of the first relay are also connected with the wiring corners and diodes at both ends of the second relay;

One of the wiring corners of the second relay is also connected to the positive pole of the power supply, and the other wiring corner is connected to one of the wiring corners of the first temperature sensing device, one of the wiring corners of the relay, one of the wiring corners of the "semiconductor dehumidification" indicator light, and one of the drain solenoid valves. corner; the other wiring corner of the "semiconductor dehumidification" indicator light and the other wiring corner of the drain solenoid valve are connected to the negative pole of the power supply;

The third wiring corner of the second relay is connected to the positive pole of the power supply, and the fourth wiring corner of the second relay is connected to the positive pole of the solid state relay SSRa. corner, the other end of the indicator light is connected to the negative pole of the power supply.

Further, the third relay delays 180s to start the refrigeration compressor circuit, and the fourth relay delays 180s to start the semiconductor dehumidification device.

Further, the power supply of the system includes fast fuses for protecting several thyristors and diodes, and by proportionally controlling the conduction angle of the thyristors, the DC voltage is increased or decreased to form a closed-loop control process.

Further, in the power supply:

AC input circuit: AC power passes through several fast fuses, respectively, in series with several contactor contacts, and then in series with several solid-state relays, respectively, and then respectively connected between several groups of thyristors;

Output circuit: One part of the thyristor output is the positive pole of the DC power output, and outputs +500 DC voltage to supply the semiconductor refrigerator; the other part of the thyristor output is the 0V end of the DC power supply, and through the shunt, the 0-100A large current is converted into The DC voltage of 0-75mV is supplied to the control and display modules. The resistor divides the +500V voltage to obtain a control voltage of 10V, which is sent back to the control and display modules for use; the thyristor trigger control modules are respectively connected to the corresponding thyristors. If the output voltage is high, proportionally reducing the conduction angle of the corresponding thyristor can make the DC voltage of 500V drop to the rated value; if the output voltage is low, increasing the conduction angle of the corresponding thyristor proportionally can make 500V The DC voltage is increased to the rated value, forming a closed-loop control process.

The present invention also relates to the above-mentioned high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation method, comprising the following steps:

Step (1), when the humidity of the valve hall is greater than 45% and the temperature is lower than 18°C, the three-phase solid state relay is turned on, the system enters the working state, and the drain solenoid valve is turned on at the same time;

Step (2), after the system is started, the relay contacts are connected with a delay of 180S, and the semiconductor dehumidification device is started to work;

Step (3), when the humidity of the valve hall is less than or equal to 45%, or the temperature is higher than 23°C, the relay contact is disconnected instantaneously, stopping the operation of the semiconductor refrigeration device. The air-conditioning system is in the locked state, and the original air-conditioning system enters the normal working state;

Among them, if the output voltage is high, reduce the conduction angle of the corresponding thyristor proportionally to reduce the DC voltage to the rated value; if the output voltage is low, increase the conduction angle of the corresponding thyristor proportionally to increase the DC voltage of 500V to 500V. rated value.

Compared with the prior art, the beneficial effects of the present invention are as follows:

When the compressor is in the cooling state, the evaporator is absorbing heat, and the condenser is in the heating state. After adding a set of condensers to the heat-insulating wind cabinet, in the dehumidifying state, the condenser can be used. The condenser is used to recover heat, and the electric heater is no longer needed for heating. That is to say, the improved air conditioner has two condensers, the condenser outside the wind cabinet is used for cooling, and the condenser inside the wind cabinet is mainly used for heating At the same time, the application also designs a matching automatic control circuit with temperature and humidity detection, which realizes the energy-saving operation of the central air-conditioning system, saves a lot of air-conditioning operating costs, and saves a lot of electric energy. It is suitable for related technical fields such as valve hall air conditioners of converter stations, main control room air conditioners, various room air conditioners, and central air conditioner systems in the air conditioner systems of large shopping malls.

Description of drawings

Fig. 1 is the structural schematic diagram of the system of the present invention;

Fig. 2 is the structural principle diagram of the power supply of the system of the present invention;

FIG. 3 is a schematic diagram of a system control terminal circuit of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, the technical or scientific terms used in the embodiments of the present application shall have the usual meanings understood by those with ordinary skill in the art to which the present invention belongs. "First", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprises" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things. "Installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be Communication within two elements. "Top", "bottom", "left", "right", "horizontal" and "vertical" are only used relative to the orientation of the components in the drawings, these directional terms are relative concepts, they For relative description and clarification, it may vary accordingly depending on the orientation in which components are placed in the figures.

As shown in FIG. 1, the high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system of the present invention includes an insulating wind cabinet 1, and the insulating wind cabinet 1 is divided into a central heating channel 7 and two dehumidifying channels 6 by two condensation pipes , the condenser includes a semiconductor refrigeration sheet group 5, the two ends of the semiconductor refrigeration sheet group 5 are arranged between the upper cold and hot air baffle 2 and the lower cold and hot air baffle 8, one side of the semiconductor refrigeration sheet group 5 is the cooling surface 3, and the other side is the cooling surface 3. One side is the hot air surface 4, and the condensers on both sides are connected to the 500V power supply. The side in contact with the dehumidification channel 6 is the refrigeration surface 3, and the bottom ends of the 6 dehumidification channels on both sides are communicated with the condensate water discharge pipe 9. One end of the condensate water discharge pipe 9 is also provided with a drain solenoid valve 10, a condenser, a drain solenoid valve 10, and an air conditioner. The compressor and the temperature and humidity sensing device in the valve hall are connected with the control end, and the heating channel in the middle and the dehumidification channels on both sides are connected with the air in the valve hall.

When the temperature in the valve hall is high, the dehumidification state is adopted. The air returning from the valve hall is divided into three parts in the wind cabinet. The air on the left and right sides enters the refrigeration surface of the semiconductor refrigeration device. After the air is cooled, the water molecules in it condense. When the water droplets fall on the water receiving tray, it is then discharged to the outside of the wind cabinet through the drainage pipe. After the air conditioner in the middle is heated, the dehumidified air is mixed together, so that the moisture in the circulating air is removed, and the temperature of the circulating air is not lowered, which greatly improves the use efficiency of electric energy.

When the valve hall humidity or temperature returns to the processing level, the system of this embodiment quits work, the startup circuit of the compressor is blocked, and the compressor returns to the normal working state.

The structure of the power supply of the system of this embodiment. Since the working power supply of the system in this embodiment is a high-power DC power supply, the working flow is very large, up to 120A. In order to improve the utilization efficiency of mains power, 380V three-phase AC power is used to directly rectify the DC power, and the rectified DC voltage is 500V , the work of the whole device is 60kW (the power can be controlled according to the actual situation). The thyristor trigger control module 8 with DC voltage and ammeter is the control core for the stable output of the rectified power supply, which can ensure the safety and stability of the rectified DC.

As shown in Figure 2, the power supply has 6 silicon controlled rectifiers, among which, the silicon controlled rectifier V1 is connected to V6, the silicon controlled rectifier V3 is connected to V4, the silicon controlled rectifier V2 is connected to V5, and the three branches are connected to 500V on the power supply. One end of the current sampling shunt FL is connected to V2, the other end is connected to the negative pole of the power supply, one end of the resistor R1 (490k-5w) is connected to the positive pole of the 500V power supply, and the other end is connected to the negative pole of the 500V power supply. 10k-1w) after connecting, connect with the negative pole of the power supply.

AC input circuit: AC power Ua, Ub, Uc pass through fast fuses RSA, RSB, RSC respectively, and then connect in series with contactors C11, C12, C13 respectively, and then connect in series with solid state relays SSRa, SSRb, SSRc respectively, and then connect them respectively Enter the points P1, P2 and P3 where V1 and V6, V3 and V4, and V5 and V2 are connected.

Connection of thyristors: the cathodes of thyristors V1, V2, and V3 are connected together, the anodes of thyristors V2, V4, and V6 are connected together, the anode of thyristor V1 and the cathode of V6, the anode of thyristor V2 and the cathode of V3, the anode of thyristor V3 and the cathode of V4 are respectively connected to each other. P1, P2 and P3 are connected to each other.

Power control circuit: The 2 end of the fast fuse RSA is connected with the 7th pin of the contactor C10, the 8th pin of the contactor C10 is connected with the C149 pin and the 1st pin of the start button QA, and the 10th pin of the C14 is connected with the 2nd of the start button QA. The pin and the 1 pin of the stop button TA are connected together, the 5 pin of C13 and the 2 pin of the RSC are connected together. Among them, C10 is the coil of the contactor C1, and C11, C12, C13, and C14 are the contacts of the C1 contactor respectively.

Output circuit: The output of thyristor V1, V3, V5 is the positive pole of the DC power output, and outputs +500 DC voltage to supply the semiconductor refrigerator in Figure 1. The output of thyristor V2, V4 and V6 is the 0V terminal of the DC power supply. After the shunt FL, the large current of 0-100A is converted into a DC voltage of 0-75mV, which is supplied to the control and display modules. R1 and R2 divide the +500V voltage. voltage, get a 10V control voltage, and send it back to the control and display modules for use. Displays the DC voltage and DC current values of the rectified output.

The V1g, V1k, V3g, V3k, V5g, V5k of the thyristor trigger control module are connected to 1g, V1k, V3g, V3k, V5g, V5k of the thyristor respectively. If the output voltage is high, reduce the thyristor V1 proportionally. , V3, V5 conduction angle can make the 500V DC voltage drop to the rated value. When the output voltage is low, proportionally increasing the conduction angles of the thyristors V1, V3, and V5 can increase the 500V DC voltage to the rated value, forming a closed-loop control process.

As shown in FIG. 3 , the circuit principle of the system control terminal of the present invention is shown.

The temperature and humidity sensing device in the valve hall includes a first humidity sensing device J1, a second humidity sensing device J2, a first temperature sensing device J3 and a second temperature sensing device J4.

The first humidity sensing device J1, the second humidity sensing device J2, the relay ZJ1, the first temperature sensing device J3 and the second temperature sensing device J4 are connected to each other, and the wiring angle 1 of the first humidity sensing device J1 is connected to +24V, and the wiring angle 2 is connected to each other. The first temperature sensing device J3 wiring angle 1, the first temperature sensing device J3 wiring angle 2 is connected to the relay ZJ1 wiring angle 1, the relay ZJ1 wiring angle 2 is connected to the second humidity sensing device J2 wiring angle 1, and the second humidity sensing device J2 wiring angle 2 is connected to the second temperature sensing device J4 connection angle 1, the second temperature sensing device J4 connection angle 2 is connected to 0V, the relay ZJ1 connection angle 1, 2 is also connected to the relay ZJ2 connection angle 1, 2, and the diode D respectively.

Relay ZJ2-2 wiring angle 5 is connected to 24V, relay ZJ2-2 wiring angle 6 is connected to the first temperature sensing device J3 wiring angle 2, relay ZJ1 wiring angle 1, "semiconductor dehumidification" indicator RD wiring angle 1, drain solenoid valve F wiring corner 1. "Semiconductor dehumidification" indicator light RD wiring angle 2, drain solenoid valve F wiring angle 2 is connected to 0V, 24V power indicator GD is set between 24V and 0V.

Relay ZJ2-1 wiring corner 3 is connected to 24V, relay ZJ2-1 wiring corner 4 is connected to solid state relay SSRa positive pole, solid state relay SSRa, solid state relay SSRb, solid state relay SSRc positive and negative poles are connected in sequence, solid state relay SSRc negative pole is connected to the indicator light YD wiring corner 1. The YD wiring angle 2 of the indicator light is connected to 0V.

The relay ZJ1-1 delays 180s to start the refrigeration compressor circuit, and the relay ZJ1-2 delays 180s to start the semiconductor dehumidification device.

The working process of this embodiment is as follows:

(1) When the humidity in the valve hall (indoor) is greater than 45% and the temperature is lower than 18°C, the intermediate relay ZJ2 is charged, and the contact ZJ2-2 is closed and self-maintaining. The contact ZJ2-1 is closed to open the three-phase SSR solid state relay, and the system enters the working state. At this time, the 10F drain solenoid valve is opened at the same time.

(2) After the system is started, the coil of the intermediate relay ZJ1 is charged, the contact ZJ1-1 is disconnected instantaneously, and the contact ZJ1-2 is connected with a delay of 180S, and the semiconductor dehumidification device is started to work.

(3) When the valve hall (indoor) humidity is less than or equal to 45%, or the temperature is higher than 23°C, the intermediate relay ZJ1 is de-energized, the relay coil ZJ1 is de-energized, the contact SJ1-2 is disconnected instantaneously, and the semiconductor refrigeration device is stopped. At the same time, the contact ZJ1-1 is closed after a delay of 180S, the locked state of the original air-conditioning system is released, and the original air-conditioning system has entered a normal working state.

(4) When the system is too dehumidified, the 10 F drain solenoid valve at the bottom of the wind cabinet is opened, which is beneficial for dehumidification. When dehumidification is not required, the 10 F drain solenoid valve at the bottom of the fan cabinet is closed, which can reduce the amount of condensed water discharged from the fan cabinet during cooling, causing the air in the empty hall (indoor) to dry, and it will return to the water tray at the bottom of the fan cabinet. The condensation will be volatilized with the flow of air removal, and ensure that the water molecules in the air of the valve hall (indoor) do not decrease.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (8)

1. A high-efficiency and energy-saving intelligent valve hall air-conditioning dehumidification and temperature compensation system, characterized in that: comprising a heat-insulating wind cabinet, the heat-insulating wind cabinet is divided into a central heating channel and a dehumidification channel on both sides by a refrigeration assembly, and the refrigeration assembly and the central heating channel are divided into The contact side is the hot air side, and the side contacting the dehumidification channel is the cooling surface. The bottom ends of the dehumidification channels on both sides are connected to the condensate water discharge pipe. One end of the condensate water discharge pipe is also provided with a drain solenoid valve, refrigeration components, drain solenoid valves, and air conditioning compressors. And the temperature and humidity sensing device in the valve hall is connected to the control end, the heating channel in the middle and the dehumidification channels on both sides are connected with the air in the valve hall, when the indoor temperature reaches a certain value, the control end stops the air conditioner compressor, and the left and right two in the valve hall are connected. The air returning from the side enters the dehumidification channels on both sides and contacts the cooling surface. After the air is cooled, the water molecules in it condense into water droplets and fall down, and then are discharged through the condensate water discharge pipe. After heating, it is mixed with dehumidified air to remove moisture from the circulating air. 2. The high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system according to claim 1, characterized in that: the refrigeration assembly comprises condensers arranged on both sides of the middle part of the heat-insulating wind cabinet, the condensers comprise a semiconductor refrigeration sheet group, and the semiconductor Both ends of the refrigeration sheet group are arranged on the cold and hot air partitions, one side of the semiconductor refrigeration sheet group is the cooling surface, the other side is the hot air surface, and the condensers on both sides are connected to the power supply. 3. The high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system according to claim 1, wherein the temperature and humidity sensing device in the valve hall comprises a first humidity sensing device, a second humidity sensing device, and a first temperature sensing device and a second temperature sensing device. 4. The high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system according to claim 3, characterized in that: a first humidity sensing device, a second humidity sensing device, a first relay, a first temperature sensing device and a second temperature sensing device The sensing devices are connected to each other, the first humidity sensing device and the second temperature sensing device are respectively connected to the positive and negative terminals of the power supply, and the wiring angles at both ends of the first relay are respectively connected with the wiring angles and diodes at both ends of the second relay; One of the wiring corners of the second relay is also connected to the positive pole of the power supply, and the other wiring corner is connected to one of the wiring corners of the first temperature sensing device, one of the wiring corners of the relay, one of the wiring corners of the "semiconductor dehumidification" indicator light, and one of the drain solenoid valves. corner; the other wiring corner of the "semiconductor dehumidification" indicator light and the other wiring corner of the drain solenoid valve are connected to the negative pole of the power supply; The third wiring corner of the second relay is connected to the positive pole of the power supply, and the fourth wiring corner of the second relay is connected to the positive pole of the solid state relay SSRa. corner, the other end of the indicator light is connected to the negative pole of the power supply. 5. The high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system according to claim 4, wherein the third relay delays 180s to start the refrigeration compressor circuit, and the fourth relay delays 180s to start the semiconductor dehumidification device. 6. The high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and temperature compensation system according to claim 1, wherein the power supply of the system includes a fast fuse for protecting several thyristors and diodes, and the thyristor is controlled proportionally The conduction angle makes the DC voltage rise or fall, forming a closed-loop control process. 7. The high-efficiency and energy-saving intelligent valve hall air-conditioning dehumidifying and warming system according to claim 6, is characterized in that: in the power supply: AC input circuit: AC power passes through several fast fuses, respectively, in series with several contactor contacts, and then in series with several solid-state relays, respectively, and then respectively connected between several groups of thyristors; Output circuit: One part of the thyristor output is the positive pole of the DC power output, and outputs +500 DC voltage to supply the semiconductor refrigerator; the other part of the thyristor output is the 0V end of the DC power supply, and through the shunt, the 0-100A large current is converted into The DC voltage of 0-75mV is supplied to the control and display modules. The resistor divides the +500V voltage to obtain a control voltage of 10V, which is sent back to the control and display modules for use; the thyristor trigger control modules are respectively connected to the corresponding thyristors. If the output voltage is high, proportionally reducing the conduction angle of the corresponding thyristor can make the DC voltage of 500V drop to the rated value; if the output voltage is low, increasing the conduction angle of the corresponding thyristor proportionally can make 500V The DC voltage is increased to the rated value, forming a closed-loop control process. 8. The high-efficiency and energy-saving intelligent valve hall air conditioner dehumidification and warming method based on one of claims 1-7, characterized in that: comprising the steps: Step (1), when the humidity of the valve hall is greater than 45% and the temperature is lower than 18°C, the three-phase solid state relay is turned on, the system enters the working state, and the drain solenoid valve is turned on at the same time; Step (2), after the system is started, the relay contacts are connected with a delay of 180S, and the semiconductor dehumidification device is started to work; Step (3), when the humidity of the valve hall is less than or equal to 45%, or the temperature is higher than 23°C, the relay contact is disconnected instantaneously, stopping the operation of the semiconductor refrigeration device. The air-conditioning system is in the locked state, and the original air-conditioning system enters the normal working state; Among them, if the output voltage is high, reduce the conduction angle of the corresponding thyristor proportionally to reduce the DC voltage to the rated value; if the output voltage is low, increase the conduction angle of the corresponding thyristor proportionally to increase the DC voltage of 500V to 500V. rated value.

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