CN109494592B - Indoor and outdoor circulation control device and control method for electric room in transformer substation - Google Patents
Indoor and outdoor circulation control device and control method for electric room in transformer substation Download PDFInfo
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- CN109494592B CN109494592B CN201811448967.0A CN201811448967A CN109494592B CN 109494592 B CN109494592 B CN 109494592B CN 201811448967 A CN201811448967 A CN 201811448967A CN 109494592 B CN109494592 B CN 109494592B
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- Prior art keywords
- silica gel
- air
- humidity
- exhaust
- heating
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Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007791 dehumidification Methods 0.000 claims abstract description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 64
- 239000000741 silica gel Substances 0.000 claims description 64
- 229910002027 silica gel Inorganic materials 0.000 claims description 64
- 238000010438 heat treatment Methods 0.000 claims description 35
- 239000002245 particle Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract 1
- 230000009469 supplementation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
Abstract
The invention discloses an indoor and outdoor circulation control device and a control method thereof for electric room in a transformer substation. According to the invention, the multiple blowers are started by controlling the humidity and oxygen content change in the electric room, so that rapid drying and blowing are realized, the dehumidification effect is greatly improved, the oxygen content is stable, automatic dehumidification and oxygen supplementation can be realized, the efficiency is higher, and the control is more convenient.
Description
Technical Field
The invention belongs to the technical field of electrical room dehumidification devices, and particularly relates to an electrical room indoor and outdoor circulation control device in a transformer substation and a control method thereof.
Background
The existing electrical room (high-pressure room and underground cable room) environment management system is low in intelligent degree, does not perform comprehensive and unified management on the aspects of oxygen content and ventilation of the electrical room, is intelligently controlled, and especially lacks effective monitoring and processing on air quality conditions of an area where people enter the electrical room, in addition, cannot treat equipment operation environments more efficiently and rapidly, is high in cost, and cannot solve the problem at all.
Disclosure of Invention
The invention solves the technical problems that: an indoor and outdoor circulation control device and a control method thereof for electric room in a transformer substation are provided to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides an indoor outer circulation controlling means of electrical in transformer substation, is including installing inside temperature and humidity sensor and the oxygen content sensor in the room and installing outside temperature sensor outside, and inside temperature and humidity sensor, oxygen content sensor and outside temperature sensor are connected to the controller, still are connected with a plurality of forced draught blower and exhaust fan and a plurality of air supply pneumatic valve and exhaust pneumatic valve on the controller, and a plurality of forced draught blower are connected to indoor through the lateral conduit respectively.
The controller is also connected with a heater and a silica gel temperature and humidity sensor in the silica gel chamber.
A control method of an indoor and outdoor circulation control device of an electric room in a transformer substation comprises the following steps: the temperature and humidity in the electric room are collected through the temperature and humidity sensor, when the average value of the humidity of the collected temperature and humidity sensors is larger than or equal to a set threshold xRH% and smaller than the average temperature collected outdoors, the air supply valves are opened, and the corresponding multipath air supply valves are started to dehumidify.
A control method of an indoor and outdoor circulation control device of electric equipment in a transformer substation comprises the steps of closing a plurality of air supply air valves, opening an air exhaust air valve, and starting an exhaust fan and a heater to heat and dehumidify a silica gel box if a silica gel temperature and humidity sensor detects that the humidity in the silica gel box is larger than a set threshold yRH%.
The invention has the beneficial effects that: compared with the prior art, the intelligent substation system has the advantages that the air supply device is started by controlling the humidity and oxygen content change in the electric room, the rapid targeted drying air supply is realized, the dehumidification effect is greatly improved, the oxygen content is stable, the automatic air circulation drying and the indoor oxygen content supplementing can be realized, the intelligent control of the ventilation circulation device and the drying and filtering device can be realized, the unified management is realized, the efficiency is higher, and the compatibility of the system to the intelligent substation system is further improved.
Drawings
FIG. 1 is a schematic diagram of a control principle structure;
FIG. 2 is a high pressure chamber control logic diagram;
FIG. 3 is a cable chamber control logic diagram;
FIG. 4 is a schematic structural view of a silica gel dehumidification device;
FIG. 5 is a schematic perspective view of a silica gel dehumidification device;
fig. 6 is a schematic diagram of a structure of a silica gel dehumidification device connected with a power box.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Example 1: as shown in fig. 1-6, an indoor and outdoor circulation control device for electric room in a transformer substation comprises an indoor temperature and humidity sensor, an oxygen content sensor and an outdoor temperature sensor, wherein the indoor temperature and humidity sensor, the oxygen content sensor and the outdoor temperature sensor are connected to a controller, a plurality of blowers and exhaust fans and a plurality of air supply and exhaust valves are further connected to the controller, the blowers are respectively connected to the room through branch pipes, and the controller is further connected with an air return blower (a high-pressure room air inlet and exhaust fan or a cable room air inlet and exhaust fan) which is connected to an air return pipeline.
The controller is also connected with a heater and a silica gel temperature and humidity sensor in the silica gel chamber.
Example 2: a control method of an indoor and outdoor circulation control device of an electric room in a transformer substation comprises the following steps: the temperature and humidity in the electric room are collected through the temperature and humidity sensor, when the average value of the humidity of the collected temperature and humidity sensors is larger than or equal to a set threshold xRH% and smaller than the average temperature collected outdoors, the air supply valves are opened, and the corresponding multipath air supply valves are started to dehumidify.
A control method of an indoor and outdoor circulation control device of electric equipment in a transformer substation comprises the steps of closing a plurality of air supply air valves, opening an air exhaust air valve, and starting an exhaust fan and a heater to heat and dehumidify a silica gel box if a silica gel temperature and humidity sensor detects that the humidity in the silica gel box is larger than a set threshold yRH%.
In fig. 2, X1 is an oxygen sensor, A1, A2, C1, C2 are temperature and humidity sensors, χa% is a maximum set point of indoor oxygen content, χb% is a minimum set point of indoor oxygen content,is the average value of humidity values of 2 temperature and humidity sensors in the high-pressure chamber, < >>Is the average value of humidity values of 2 outdoor temperature and humidity sensors.
In fig. 3, X2 is an oxygen sensor, B1, B2, C1, C2 are temperature and humidity sensors, χa% is a maximum set point of indoor oxygen content, χb% is a minimum set point of indoor oxygen content,is the average value of the humidity values of 2 temperature and humidity sensors in the cable chamber, < >>Is the average value of humidity values of 2 outdoor temperature and humidity sensors.
Fig. 2 and 3 show control logic of the air circulation system of the high-pressure chamber and the cable chamber, which is substantially the same as the control logic of the cable chamber, for example, the control logic of fig. 2 is as follows:
when the oxygen content sensor X1 in the high-pressure chamber detects that the oxygen content is higher than χa percent or the oxygen content is lower than χb percent, starting an air inlet and outlet fan of the high-pressure chamber; in addition, when the average value of the temperature and humidity sensors of A1# and A2# in the high-pressure chamber is larger than the average value of the temperature and humidity sensors of C1# and C2# outside the high-pressure chamber, and the values of the temperature and humidity sensors of C1# and C2# outside the chamber are smaller than the set humidity value, the air intake and exhaust fan is started.
Example 3: as shown in fig. 4-6, an electrical room dehumidification device in a transformer substation comprises a silica gel box 1, wherein the silica gel box 1 is of a strip-shaped structure, a plurality of partition boards 3 with air holes 2 are arranged in the silica gel box 1 along the length direction, a rubber particle layer 4 is arranged between adjacent partition boards 3, an air inlet pipe 5 is arranged at one end of the silica gel box 1 in the length direction, an exhaust pipe 6 and a heating exhaust pipe 10 which are connected with a box body 15 to be dehumidified are arranged at the other end of the silica gel box, an electromagnetic valve I7 is arranged on the air inlet pipe 5, an exhaust fan 8 and an electromagnetic valve II 9 are arranged on the exhaust pipe 6, the heating exhaust pipe 10 is communicated with the outside, an electromagnetic valve III 11 and an heating exhaust fan 12 are arranged on the electromagnetic valve I, a heater 13 is arranged on the partition boards 3, and a filter screen is arranged at the end part of the air inlet pipe 5.
Preferably, the end of the silica gel box 1 is uniformly provided with three exhaust pipes 6 connected with the box body to be dehumidified.
Preferably, two heaters 13 are provided for each partition plate 3.
Preferably, the above-mentioned separator 3 at the air outlet end and the second separator 3 at the air inlet end of the silica gel box 1 are respectively provided with a humidity sensor 14.
Preferably, the humidity sensor 14 is connected to a controller connected to the solenoid valve one 7, the solenoid valve two 9, the solenoid valve three 11, the heater 13, the exhaust fan 8 and the heating exhaust fan 12.
As shown in fig. 6, the invention is connected to the box body 15 to be dehumidified, three exhaust pipes are connected to three forward valves 18, the three forward valves 18 are respectively connected to the air outlet 16 at the top of the box body 15 to be dehumidified through a plurality of pipelines, a check valve 17 is arranged on an air outlet pipe at the bottom of the box body 15 to be dehumidified, which is communicated with the outside, the check valve 17 is connected to the air inlet end of the silica gel box 1 through an air return pipe, so that the cyclic heating and drying can be realized, and the wet air is filtered and then enters an electric room again for heating and drying, thereby reducing the energy damage.
The device has 3 states:
1. an air circulation dehumidification state;
2. heating and drying silica gel;
3. and a standby state.
The device realizes sealing through a plurality of solenoid valves, prevents outside moisture from getting into the silica gel case.
Air circulation dehumidification state (principle schematic diagram is as shown in the figure): the three solenoid valves II and I are opened, the three exhaust fans are simultaneously opened, the solenoid valves III and the heating exhaust fans are closed, and the system is in a circulating dehumidification state. Air is forced to be dried through silica gel by a fan and then is sent into equipment to be dehumidified; in addition, the three solenoid valves II and I of the air valve are opened after receiving the control command, and then the three exhaust fans are opened after the time delay is 5S, because the solenoid valves are opened for a certain time and a time delay, if the air valve is opened while the fans are opened, the air valve is easy to be damaged, and therefore the fans are opened after the time delay. At the moment, air enters the box body to be dehumidified through the air inlet of the air filter screen, the first electromagnetic valve, the silica gel particle layer, the second electromagnetic valve, the exhaust fan and the air drying in the equipment to be dehumidified.
Silica gel heating and drying state: when any one of the four humidity sensors detects that the humidity is greater than a set value, the controller controls the three exhaust fans to be closed, and simultaneously the three electromagnetic valves II are closed; when the electromagnetic valve III is opened, the heating exhaust fan is started after time delay is 5S, and eight groups of heaters (adopting electric heating pipes) are simultaneously started, and at the moment, the heating exhaust fan enters a silica gel heating and drying state. At the moment, the outside air of the silica gel box is heated by the first electromagnetic valve, the silica gel (heating state), the exhaust pipe, the third electromagnetic valve, the heating exhaust fan and discharged outside the silica gel box, namely, the silica gel box is heated and forced to circulate by the fan, so that the water vapor scattered after the silica gel is heated is taken away, and the silica gel is heated and dried.
Standby state: when the device to be dehumidified does not need dehumidification and the humidity of the silica gel box does not reach the set value, the device is not in a circulating dehumidification state, is not in a heating drying state, and is in a standby state when the three exhaust fans and the heating exhaust fan are all closed.
The device is used for dehumidifying box equipment and circulating air in the internal environment, and can efficiently solve the problems of common circulating air and humidity.
The dehumidifying device for the electrical room in the transformer substation has the advantages that:
1) The silica gel dehumidification device is arranged on the power box body, the power box body is provided with an exhaust port, under the action of an exhaust fan, dry gas is discharged to the power box body, humid air in the power box body is taken away and discharged, dehumidification of the power box body is realized, dehumidification in the power box body is realized through external introduction of the dry air, ageing of components in equipment is avoided, the service life is prolonged, dehumidification uniformity is better, dehumidification effect is better, a heater, a heating exhaust pipe and a heating exhaust fan are arranged, silica gel particles with water absorption can be heated and dried, the better water absorption effect of the silica gel particles is realized, and the dehumidification device has the characteristics of simple structure, low cost and convenience and rapidness in operation;
2) The three exhaust pipes are arranged, so that the drying gas can be quickly discharged into the power box body, the negative pressure effect is better, and the air drying effect is better;
3) Two heaters are arranged, so that heating is faster, silica gel is dried faster, and efficiency is higher;
4) The humidity sensor is arranged, so that the humidity condition in the silica gel box can be monitored in real time, the silica gel dehumidification effect is monitored, and the silica gel dehumidification treatment is performed in time;
5) The automatic dehumidification and drying of the device are realized through the connection of the controller with the humidity sensor, the heater, the heating exhaust fan, the exhaust fan and the electromagnetic valves, and the efficiency is higher, thereby facilitating the management and control.
The above description is only an example of the embodiment of the present invention, and the scope of the present invention is not limited thereto. Variations and alternatives can be readily ascertained by one skilled in the art within the scope of the present disclosure, which is intended to be within the scope of the present disclosure. For this purpose, the scope of the invention shall be subject to the scope of the claims.
Claims (1)
1. An indoor outer circulation controlling means of electric in transformer substation, its characterized in that: the indoor temperature and humidity sensor, the oxygen content sensor and the external temperature sensor are connected to a controller, and the controller is also connected with a plurality of blowers and exhaust fans, a plurality of air supply valves and air exhaust valves, and the blowers are respectively connected to the indoor through branch pipelines; the controller is also connected with a heater and a silica gel temperature and humidity sensor in the silica gel box; the control method of the indoor and outdoor circulation control device of the electric room in the transformer substation comprises the following steps: acquiring the temperature and humidity in an electrical room through a temperature and humidity sensor, and when the average value of the humidity of the acquired temperature and humidity sensors is larger than or equal to a set threshold xRH% and smaller than the average humidity acquired outdoors, opening a plurality of air supply valves, and starting corresponding multipath air supply valves to dehumidify; if the silica gel temperature and humidity sensor detects that the humidity in the silica gel box is higher than a set threshold yRH%, closing a plurality of air supply air valves, opening an air exhaust air valve, and starting an exhaust fan and a heater to heat and dehumidify the silica gel box; when the indoor oxygen content sensor X1 detects that the oxygen content is higher than χa percent or the oxygen content is lower than χb percent, starting an air inlet and outlet fan of the high-pressure chamber; in addition, when the average value of the temperature and humidity sensors of the A1# and A2# in the high-pressure chamber is larger than the average value of the temperature and humidity sensors of the C1# and C2# outside the high-pressure chamber, and the average value of the humidity of the temperature and humidity sensors of the outdoor C1# and C2# is smaller than a set humidity value, the air inlet and exhaust fan is started, the air inlet and exhaust fan also comprises an electric chamber dehumidification device in a transformer substation, the air inlet and exhaust fan comprises a silica gel box, the silica gel box is of a strip-shaped structure, a plurality of partition plates with air holes are arranged in the silica gel box along the length direction, a rubber particle layer is arranged between the adjacent partition plates, one end of the silica gel box in the length direction is provided with an air inlet pipe, the other end of the silica gel box is provided with an exhaust pipe and a heating exhaust pipe which are connected with a box body to be dehumidified, the first electromagnetic valve is arranged on the air inlet pipe, the exhaust pipe is provided with an exhaust fan and a second electromagnetic valve, the heating exhaust pipe is communicated with the outside, the third electromagnetic valve and the heating exhaust fan are arranged on the exhaust pipe, a heater is arranged on the partition plates, and the filter screen is arranged at the end of the air inlet pipe; three exhaust pipes connected with the box body to be dehumidified are uniformly arranged at the end part of the silica gel box; the control device has 3 states: 1. an air circulation dehumidification state; 2. heating and drying silica gel; 3. a standby state;
wherein, the air circulation dehumidification state: the three solenoid valves II and the solenoid valve I are opened, the three exhaust fans are opened, the solenoid valve III and the heating exhaust fan are closed, the system is in a circulating dehumidification state, and air is forced to pass through silica gel to be dried by the fan exhaust and then is sent into the switch cabinet; the three solenoid valves II and I are opened after receiving the control command, and then after the time is delayed for 5S, the three exhaust fans are opened again, and at the moment, air passes through the air inlet of the filter screen, the solenoid valve I, the silica gel particle layer, the solenoid valve II, the exhaust fans and enters the switch cabinet to finish the drying of the air in the switch cabinet;
silica gel heating and drying state: when any one of humidity sensors arranged in the silica gel box detects that the humidity is greater than a set value, the controller controls the three exhaust fans to be closed, and simultaneously, the three electromagnetic valves II are closed; the third electromagnetic valve is opened, the heating exhaust fan is opened after time delay of 5S, and the heater is simultaneously opened, at the moment, the heating exhaust fan enters a silica gel heating and drying state, at the moment, the outside air of the silica gel box passes through the first electromagnetic valve, the silica gel particle layer, the heating exhaust pipe, the third electromagnetic valve, the heating exhaust fan and the outside of the silica gel box, namely, the heating is carried out while the forced circulation is carried out through the fan, so that the vapor scattered after the silica gel is heated is taken away, and the silica gel heating and drying is completed;
standby state: when the switch cabinet does not need dehumidification and the humidity of the silica gel box does not reach a set value, the switch cabinet is not in a circulating dehumidification state, is not in a heating drying state, and the three exhaust fans and the heating exhaust fan are all closed, so that the device to be dehumidified is in a standby state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811448967.0A CN109494592B (en) | 2018-11-28 | 2018-11-28 | Indoor and outdoor circulation control device and control method for electric room in transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811448967.0A CN109494592B (en) | 2018-11-28 | 2018-11-28 | Indoor and outdoor circulation control device and control method for electric room in transformer substation |
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| CN109494592A CN109494592A (en) | 2019-03-19 |
| CN109494592B true CN109494592B (en) | 2023-11-10 |
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Families Citing this family (1)
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| CN112117665B (en) * | 2020-08-31 | 2022-12-27 | 国网安徽省电力有限公司六安供电公司 | Dehumidification control method and system for matching switch cabinet group |
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