CN113363057A - Evaporative cooling transformer fluorocarbon medium management system and method - Google Patents
Evaporative cooling transformer fluorocarbon medium management system and method Download PDFInfo
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- CN113363057A CN113363057A CN202110588197.5A CN202110588197A CN113363057A CN 113363057 A CN113363057 A CN 113363057A CN 202110588197 A CN202110588197 A CN 202110588197A CN 113363057 A CN113363057 A CN 113363057A
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/18—Liquid cooling by evaporating liquids
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Abstract
The invention discloses a fluorocarbon medium management system and a method for an evaporative cooling transformer, which are applied to the management of fluorocarbon media in the evaporative cooling transformer, wherein the fluorocarbon medium management system for the evaporative cooling transformer comprises a monitoring device, a storage device and a recovery device, the monitoring device can monitor the environmental change in a main transformer room, the storage device can store the environmental change, leaked fluorocarbon media temporarily stored in a primary storage pool are conveyed to a secondary storage pool for storage, and after a certain amount of fluorocarbon media is stored in the secondary storage pool, the recovery device can be started to recover the fluorocarbon media in the secondary storage pool. The monitoring device can monitor slow and a small amount of recessive leakage and a large amount of leakage, the storage device and the recovery device can store and recover leaked fluorocarbon media, loss of the fluorocarbon media can be reduced, the fluorocarbon media are saved, and safety performance and economic benefit of the transformer are improved.
Description
Technical Field
The invention relates to the technical field of evaporative cooling transformers, in particular to a system and a method for managing fluorocarbon media of an evaporative cooling transformer.
Background
The evaporative cooling technology is an efficient cooling technology applied to a transformer substation power transformer, and takes away heat through the gasification process of liquid to cool a transformer winding. At present, evaporative cooling transformers taking fluorocarbon media as insulating cooling media are developed domestically, the fluorocarbon media have the characteristics of non-combustibility, non-explosion and non-toxicity and are relatively environment-friendly, but the distillation range of the fluorocarbon media is 89.5-110.5 ℃, the fluorocarbon media are extremely easy to gasify and volatilize and difficult to store and recover, and small and slow media are difficult to detect and intervene when hidden leakage occurs in the using process. If invisible leakage for a long time or a large amount of sudden leakage is not interfered in time, serious loss of fluorocarbon media can be caused, the cooling effect of the transformer is influenced, the normal operation of equipment is further influenced, and potential safety hazards are generated; if the leaked fluorocarbon media are not stored and recovered in time when a large amount of leakage occurs, the waste of the fluorocarbon media can be caused, the operation and maintenance cost is increased, and the economic benefit of the transformer is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an evaporative cooling transformer fluorocarbon medium management system which can reduce the loss of fluorocarbon medium, save the fluorocarbon medium and improve the safety performance and the economic benefit of a transformer.
The invention also provides an evaporative cooling transformer fluorocarbon medium management method applying the evaporative cooling transformer fluorocarbon medium management system.
The evaporative cooling transformer fluorocarbon medium management system provided by the embodiment of the first aspect of the invention is applied to the management of fluorocarbon medium in an evaporative cooling transformer, the evaporative cooling transformer comprises a transformer winding, a winding seal room and a main transformer room, the transformer winding and the fluorocarbon medium are all accommodated in the winding seal room, part of the transformer winding is immersed in the fluorocarbon medium, the winding seal room is accommodated in the main transformer room, the evaporative cooling transformer fluorocarbon medium management system comprises a monitoring device, a storage device and a recovery device, the storage device comprises a primary storage pool, a secondary storage pool and a liquid inlet pipe, the primary storage pool is arranged below the winding seal room, the primary storage pool is used for temporarily storing the fluorocarbon medium leaked in the winding seal room, the secondary storage pool is arranged outside the main transformer room, the primary storage pool is communicated with the secondary storage pool through the liquid inlet pipe; the monitoring device comprises a halogen monitor and a humidity monitor, the halogen monitor is mounted on the inner wall of the main transformer room and used for monitoring the halogen concentration in the main transformer room, the humidity monitor is arranged in the primary storage pool and used for monitoring whether the fluorocarbon medium exists in the primary storage pool or not; the recovery device comprises a recovery pipe, the recovery pipe is communicated with the secondary storage pool, and the recovery pipe is used for recovering the fluorocarbon medium in the secondary storage pool.
The evaporative cooling transformer fluorocarbon medium management system provided by the embodiment of the first aspect of the invention at least has the following beneficial effects: monitoring device can monitor the environmental change in the main room that becomes, halogen monitor can monitor halogen concentration, halogen concentration rises and can indicate that the fluorocarbon medium in the winding seals between takes place to reveal, whether the humidity monitor can monitor the winding seals in the one-level memory pool of bottom and has had the fluorocarbon medium, humidity reaches a definite value and can indicate that has had a certain amount of fluorocarbon medium in the one-level memory pool, can open storage device and save, carry the fluorocarbon medium of revealing of keeping in the one-level memory pool to the second grade memory pool and preserve, after having a certain amount of fluorocarbon medium in the second grade memory pool, can open recovery unit and retrieve the fluorocarbon medium in the second grade memory pool. The monitoring device can monitor slow and a small amount of recessive leakage and a large amount of leakage, the storage device and the recovery device can store and recover leaked fluorocarbon media for recycling, loss of the fluorocarbon media can be reduced, the fluorocarbon media are saved, and safety performance and economic benefit of the evaporative cooling transformer are improved.
In some embodiments of the present invention, the monitoring device further comprises an oxygen monitor, the oxygen monitor is mounted on an inner wall of the main transformer room, and the oxygen monitor is used for monitoring the oxygen concentration in the main transformer room.
In some embodiments of the present invention, the storage device further comprises a first immersed pump, and the first immersed pump is installed at one end of the liquid inlet pipe communicated with the primary storage tank.
In some embodiments of the present invention, the storage device further comprises a water injection pipe, the water injection pipe is communicated with the secondary storage pool, and the water injection pipe is used for injecting water into the secondary storage pool.
In some embodiments of the invention, the storage device further comprises a level sensor mounted to an interior sidewall of the secondary storage tank.
In some embodiments of the invention, the storage device further comprises a condenser mounted at the top of the secondary storage tank.
In some embodiments of the invention, the storage device further comprises a hydraulic pressure sensor mounted at the bottom of the secondary storage pool.
In some embodiments of the present invention, the storage device further comprises an air pressure sensor installed at an upper portion of the secondary storage tank, the air pressure sensor sensing air pressure in the secondary storage tank.
In some embodiments of the invention, the recycling device further comprises a second immersed pump connected to one end of the recycling pipe communicated with the secondary storage tank.
In some embodiments of the invention, the recycling device further comprises a filter connected to one end of the recycling pipe communicating with the secondary storage pool.
In some embodiments of the present invention, the recycling apparatus further includes a pressure controller disposed in the recycling pipe, and the pressure controller is configured to control the pressure of the fluorocarbon medium during recycling.
The evaporative cooling transformer fluorocarbon medium management method provided by the embodiment of the second aspect of the invention is applied to the evaporative cooling transformer fluorocarbon medium management system described in any one of the embodiments, and comprises the following steps: monitoring the halogen concentration and the humidity in the main transformer room by using the monitoring device; comparing the halogen concentration and the humidity with a first preset condition and a second preset condition; if the halogen concentration and the humidity reach the first preset condition, checking a leakage point between the winding seals; if the halogen concentration and the humidity reach the second preset condition, starting a storage device; monitoring the liquid storage amount in the secondary storage pool; comparing the liquid storage quantity with a recovery preset condition; and if the liquid storage amount reaches the recovery preset condition, starting a recovery device.
The evaporative cooling transformer fluorocarbon medium management method provided by the embodiment of the second aspect of the invention at least has the following beneficial effects: the monitoring device is adopted to monitor the halogen concentration and humidity in the main transformer room, slow, small amount of recessive leakage and large amount of leakage can be monitored, and timely treatment can be carried out; when a large amount of leakage is monitored, the storage device is started to store leaked fluorocarbon media in a centralized manner, the liquid storage capacity in the secondary storage tank is monitored, and when the recovery condition is monitored, the fluorocarbon media in the secondary storage tank can be recovered and reused, so that the loss of the fluorocarbon media can be reduced, the fluorocarbon media are saved, and the safety performance and the economic benefit of the evaporative cooling transformer are improved.
In some embodiments of the invention, the first preset condition comprises: the halogen concentration exceeds a preset value, and the humidity is lower than the preset value; the second preset condition includes: the halogen concentration exceeds a preset value, and the humidity is higher than the preset value.
In some embodiments of the invention, the step of booting the storage device comprises: delivering the fluorocarbon media in the primary storage tank to the secondary storage tank.
In some embodiments of the invention, the step of monitoring the amount of liquid stored in the secondary reservoir comprises: monitoring a hydraulic value in the secondary storage pool; and monitoring the liquid level height in the secondary storage tank.
In some embodiments of the invention, further comprising the step of: comparing the hydraulic value with a hydraulic preset value; if the hydraulic pressure value is lower than the hydraulic pressure preset value, the liquefaction of the fluorocarbon medium in the secondary storage pool is continued or accelerated; and if the hydraulic value reaches or exceeds the hydraulic preset value, injecting a preset amount of water into the secondary storage pool.
In some embodiments of the invention, further comprising the step of: after water is injected, comparing the liquid level height with a water seal preset value; if the liquid level height is lower than the water seal preset value, injecting water into the secondary storage pool until the liquid level height reaches the water seal preset value; if the liquid level height reaches or exceeds the water seal preset value, the liquefaction of the fluorocarbon medium in the secondary storage tank is continued or accelerated.
In some embodiments of the invention, the preset conditions for recycling include: the hydraulic value reaches or exceeds a hydraulic preset value, and the liquid level height reaches or exceeds a recovery preset value.
In some embodiments of the invention, further comprising the step of: monitoring the air pressure value in the secondary storage pool; comparing the air pressure value with an air pressure preset value; if the air pressure value reaches or exceeds the air pressure preset value, the liquefaction of the fluorocarbon medium in the secondary storage tank is continued or accelerated.
In some embodiments of the invention, the step of activating the recovery device comprises: and recycling the fluorocarbon medium in the secondary storage pool.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic diagram of an evaporative cooling transformer fluorocarbon medium management system provided in an embodiment of a first aspect of the present invention;
fig. 2 is a flowchart of a method for managing fluorocarbon media of an evaporative cooling transformer according to an embodiment of a second aspect of the present invention.
Reference numerals:
the system comprises a storage device 100, a primary storage pool 110, a secondary storage pool 120, a liquid inlet pipe 130, a first immersed pump 140, a water injection pipe 150, a liquid level sensor 160, a condenser 170, a hydraulic sensor 180, an air pressure sensor 190, a monitoring device 200, a halogen monitor 210, a humidity monitor 220, an oxygen monitor 230, a recovery device 300, a recovery pipe 310, a second immersed pump 320, a filter 330, a pressure controller 340, an evaporative cooling transformer 400, a transformer winding 410, a winding seal room 420 and a main transformer room 430.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The evaporative cooling transformer fluorocarbon medium management system provided by the embodiment of the first aspect of the present invention is applied to the management of fluorocarbon medium in an evaporative cooling transformer 400, the evaporative cooling transformer 400 includes a transformer winding 410, a winding seal room 420 and a main transformer room 430, the transformer winding 410 and the fluorocarbon medium are all accommodated inside the winding seal room 420, part of the transformer winding 410 is immersed in the fluorocarbon medium, the winding seal room 420 is accommodated inside the main transformer room 430, the evaporative cooling transformer fluorocarbon medium management system includes a monitoring device 200, a storage device 100 and a recovery device 300, the storage device 100 includes a primary storage tank 110, a secondary storage tank 120 and a liquid inlet pipe 130, the primary storage tank 110 is disposed below the winding seal room 420, the primary storage tank 110 is used for temporarily storing the fluorocarbon medium leaked from the winding seal room 420, the secondary storage tank 120 is disposed outside the main transformer room 430, the first-stage storage pool 110 is communicated with the second-stage storage pool 120 through a liquid inlet pipe 130; the monitoring device 200 comprises a halogen monitor 210 and a humidity monitor 220, the halogen monitor 210 is installed on the inner wall of the main transformer room 430, the halogen monitor 210 is used for monitoring the halogen concentration in the main transformer room 430, the humidity monitor 220 is arranged in the first-stage storage pool 110, and the humidity monitor 220 is used for monitoring whether fluorocarbon media exist in the first-stage storage pool 110; the recycling device 300 comprises a recycling pipe 310, the recycling pipe 310 is communicated with the secondary storage tank 120, and the recycling pipe 310 is used for recycling the fluorocarbon medium in the secondary storage tank 120.
For example, as shown in fig. 1, the evaporative cooling transformer fluorocarbon medium management system includes a monitoring device 200, a storage device 100 and a recycling device 300, the monitoring device 200 can monitor environmental changes in a main transformer room 430, the halogen monitor 210 can monitor halogen concentration, the increase in halogen concentration can indicate that the fluorocarbon medium in the winding seal room 420 leaks, the humidity monitor 220 can monitor whether the fluorocarbon medium exists in the primary storage pool 110 at the bottom of the winding seal room 420, the humidity reaching a certain value can indicate that a certain amount of fluorocarbon medium exists in the primary storage pool 110, the storage device 100 may be turned on for storage, and the leaked fluorocarbon media temporarily stored in the first-stage storage pool 110 is transferred to the second-stage storage pool 120 for storage until a certain amount of fluorocarbon media is stored in the second-stage storage pool 120, recycling device 300 may be turned on to recycle the fluorocarbon medium in secondary storage tank 120. The monitoring device 200 can monitor slow and small amount of recessive leakage and large amount of leakage, the storage device 100 and the recovery device 300 can store and recover leaked fluorocarbon media for reuse, loss of the fluorocarbon media can be reduced, the fluorocarbon media are saved, and safety performance and economic benefit of the evaporative cooling transformer 400 are improved.
It can be understood that, when leakage of the fluorocarbon medium occurs, the amount of liquid transferred from the first-stage storage tank 110 to the second-stage storage tank 120 at a time may be relatively small, and therefore, the second-stage storage tank 120 may be configured to connect a plurality of first-stage storage tanks 110, that is, a plurality of evaporative cooling transformers 400 may share one second-stage storage tank 120, so as to improve the recycling efficiency, enable the fluorocarbon medium in the second-stage storage tank 120 to reach the preset recycling condition relatively quickly, and reduce the loss of the fluorocarbon medium during the storage process. The liquid inlet pipe 130 may be provided with a check valve to control the on/off of the liquid inlet pipe 130. On the recovery pipe 310A check valve may be installed to control the on/off of the recovery pipe 310. The volume of the secondary storage pool 120 should be slightly larger than the volume of the fluorocarbon medium in the winding seal room 420, and the ratio of the volume of the secondary storage pool 120 to the volume of the fluorocarbon medium in the winding seal room 420 can be determined according to actual requirements, for example, the total accident oil pool capacity of a conventional substation is set according to the maximum oil volume V of a single transformer in reference to the fire protection code (GB50229-2006) for thermal power plant and power transformation design0Consider "that in the case where secondary reservoir 120 is capable of holding a fluorocarbon media within one winding seal 420, a water seal volume of 0.1V is again provided0The volume of the head space of the liquid surface was 0.2V0The volume of secondary reservoir 120 is set to be 1.3 times the volume of the fluorocarbon medium in winding seal 420.
It should be noted that the monitoring apparatus 200 further includes an oxygen monitor 230, the oxygen monitor 230 is installed on an inner wall of the main transformer room 430, and the oxygen monitor 230 is used for monitoring the oxygen concentration in the main transformer room 430.
For example, as shown in fig. 1, the monitoring apparatus 200 further includes an oxygen monitor 230, the oxygen monitor 230 is installed on an inner wall of the main transformer room 430, the oxygen monitor 230 is used for monitoring an oxygen concentration in the main transformer room 430, the oxygen concentration can be used as a standard for assisting in determining a leakage condition of the fluorocarbon medium, if the halogen concentration increases and the oxygen concentration decreases, the fluorocarbon medium leaks, and the halogen concentration and the oxygen concentration are monitored at the same time, so that the leakage condition of the winding seal room 420 can be determined more accurately.
It should be noted that the storage apparatus 100 further includes a first immersed pump 140, and the first immersed pump 140 is installed at one end of the liquid inlet pipe 130, which is communicated with the primary storage tank 110.
For example, as shown in fig. 1, the storage device 100 further includes a first immersed pump 140, the first immersed pump 140 is installed at one end of the liquid inlet pipe 130 communicated with the first-stage storage tank 110, the first immersed pump 140 can pump the fluorocarbon medium in the first-stage storage tank 110 into the liquid inlet pipe 130, so as to reduce resistance of the fluorocarbon medium when the liquid inlet pipe 130 is communicated with the one end of the first-stage storage tank 110 to flow in, so that the leaked fluorocarbon medium can be smoothly conveyed to the second-stage storage tank 120 even when the liquid level and the hydraulic pressure in the first-stage storage tank 110 are low, thereby ensuring the recovery efficiency of the fluorocarbon medium and reducing the loss of the fluorocarbon medium.
It should be noted that storage apparatus 100 further includes a water injection pipe 150, and water injection pipe 150 is connected to secondary storage pool 120, and water injection pipe 150 is used to inject water into secondary storage pool 120.
For example, as shown in fig. 1, the storage apparatus 100 further includes a water injection pipe 150, the water injection pipe 150 is communicated with the secondary storage tank 120, and the water injection pipe 150 is used for injecting water into the secondary storage tank 120. The fluorocarbon medium can be quickly layered after being mixed with water, the density of the fluorocarbon medium is greater than that of the water, and the water can float on the upper surface of the fluorocarbon medium after the water is injected into the fluorocarbon medium, so that the fluorocarbon medium is sealed. And a water injection pipe 150 is arranged, so that after a certain amount of fluorocarbon media is stored in the secondary storage pool 120, water can be injected into the secondary storage pool 120 through the water injection pipe 150 to carry out water sealing on the fluorocarbon media, and the evaporation loss of the fluorocarbon media is reduced.
It is understood that a check valve may be installed on the water injection pipe 150 to control the on/off of the water injection pipe 150.
It should be noted that the storage apparatus 100 further includes a liquid level sensor 160, and the liquid level sensor 160 is installed on the inner side wall of the secondary storage tank 120.
For example, as shown in fig. 1, storage device 100 further comprises a liquid level sensor 160, wherein liquid level sensor 160 is mounted on the inner side wall of secondary storage tank 120, and liquid level sensor 160 can monitor the liquid level in secondary storage tank 120 to determine whether the amount of liquid in secondary storage tank 120 meets the recycling standard.
It should be noted that the storage apparatus 100 further includes a condenser 170, and the condenser 170 is installed on the top of the secondary storage tank 120.
For example, as shown in fig. 1, the storage apparatus 100 further includes a condenser 170, the condenser 170 is installed at the top of the secondary storage tank 120, and the condenser 170 can accelerate the liquefied reflux of the gaseous fluorocarbon medium in the secondary storage tank 120, which helps to maintain the liquid state of the fluorocarbon medium in the secondary storage tank 120 and reduce the evaporation loss of the fluorocarbon medium.
It should be noted that the storage apparatus 100 further includes a hydraulic pressure sensor 180, and the hydraulic pressure sensor 180 is installed at the bottom of the secondary storage pool 120.
For example, as shown in fig. 1, storage device 100 further includes a hydraulic pressure sensor 180, wherein hydraulic pressure sensor 180 is mounted at the bottom of secondary storage tank 120, and hydraulic pressure sensor 180 is capable of monitoring the hydraulic pressure in secondary storage tank 120 to determine whether the amount of liquid in secondary storage tank 120 meets reclamation criteria.
It should be noted that storage apparatus 100 further includes an air pressure sensor 190, air pressure sensor 190 is installed at an upper portion of secondary storage tank 120, and air pressure sensor 190 is used for sensing air pressure in secondary storage tank 120.
For example, as shown in fig. 1, the storage apparatus 100 further includes a gas pressure sensor 190, the gas pressure sensor 190 is installed at an upper portion of the secondary storage tank 120, the gas pressure sensor 190 is used for sensing the gas pressure in the secondary storage tank 120, if the gas pressure in the secondary storage tank 120 is too high, which indicates that more gaseous fluorocarbon medium exists in the secondary storage tank 120, the power of the condenser 170 may be increased to accelerate liquefaction of the fluorocarbon medium.
It should be noted that the recycling apparatus 300 further includes a second immersed pump 320, and the second immersed pump 320 is connected to one end of the recycling pipe 310 communicated with the secondary storage tank 120.
For example, as shown in fig. 1, the recycling device 300 further includes a second immersed pump 320, the second immersed pump 320 is connected to the recycling pipe 310 and is communicated with one end of the secondary storage tank 120, and the second immersed pump 320 can pump the fluorocarbon medium in the secondary storage tank 120 into the recycling pipe 310, so as to reduce resistance of recycling the fluorocarbon medium, improve recycling rate of the fluorocarbon medium, and reduce loss of the fluorocarbon medium.
It should be noted that the recycling apparatus 300 further includes a filter 330, and the filter 330 is connected to one end of the recycling pipe 310 communicated with the secondary storage tank 120.
For example, as shown in fig. 1, the recycling device 300 further includes a filter 330, the filter 330 is connected to one end of the recycling pipe 310 and communicated with the secondary storage tank 120, and the filter 330 can filter impurities in the fluorocarbon medium in the secondary storage tank 120, so as to improve the quality of the recycled fluorocarbon medium, and ensure that the recycled fluorocarbon medium can be recycled.
It should be noted that the recycling apparatus 300 further includes a pressure controller 340, the pressure controller 340 is disposed on the recycling pipe 310, and the pressure controller 340 is configured to control the pressure of the fluorocarbon medium in the recycling process.
For example, as shown in fig. 1, the recycling apparatus 300 further includes a pressure controller 340, the pressure controller 340 is disposed on the recycling pipe 310, and the pressure controller 340 is used for controlling the pressure of the fluorocarbon medium during recycling, so as to control the recycling speed.
The evaporative cooling transformer fluorocarbon medium management method provided by the embodiment of the second aspect of the invention is applied to the evaporative cooling transformer fluorocarbon medium management system of any one of the embodiments, and comprises the following steps: monitoring the halogen concentration and humidity in the main transformer room 430 using the monitoring device 200; comparing the halogen concentration and the humidity with a first preset condition and a second preset condition; if the halogen concentration and the humidity reach a first preset condition, checking a leakage point of the winding seal room 420; if the halogen concentration and the humidity reach the second preset condition, starting the storage device 100; monitoring the amount of liquid stored in secondary reservoir 120; comparing the liquid storage capacity with a recovery preset condition; if the liquid storage reaches the preset recovery condition, the recovery device 300 is started.
For example, as shown in fig. 2, the evaporative cooling transformer fluorocarbon medium management method includes the steps of: monitoring the halogen concentration and humidity in the main transformer room 430 using the monitoring device 200; comparing the halogen concentration and the humidity with a first preset condition and a second preset condition; if the halogen concentration and the humidity reach a first preset condition, checking a leakage point of the winding seal room 420; if the halogen concentration and the humidity reach the second preset condition, starting the storage device 100; monitoring the amount of liquid stored in secondary reservoir 120; comparing the liquid storage capacity with a recovery preset condition; if the liquid storage reaches the preset recovery condition, the recovery device 300 is started. Monitoring the halogen concentration and humidity in the main transformer room 430 by using the monitoring device 200, monitoring the halogen concentration in the main transformer room 430, and if the gas in the main transformer room 430 contains halogen, indicating that the leakage of the winding seal room 420 has occurred; monitoring the humidity in the primary storage pool 110, wherein if the humidity reaches a certain value, a relatively large amount of leakage occurs in the winding seal room 420, and a certain amount of liquid fluorocarbon medium is stored in the primary storage pool 110, so that slow, small amount of recessive leakage and large amount of leakage can be monitored and can be processed in time; when a large amount of leakage is monitored, the storage device 100 is started to store leaked fluorocarbon media in a centralized manner, the liquid storage amount in the secondary storage tank 120 is monitored, and when the recovery condition is monitored, the fluorocarbon media in the secondary storage tank 120 can be recovered and reused, so that the loss of the fluorocarbon media can be reduced, the fluorocarbon media can be saved, and the safety performance and the economic benefit of the evaporative cooling transformer 400 can be improved.
It is understood that the environmental parameter should be a parameter capable of indicating the content of the fluorocarbon medium in the main transformer room 430, for example, it can be considered to indicate the content of the gaseous fluorocarbon medium in the gas in the main transformer room 430 by using the halogen concentration, the oxygen concentration, etc. parameters, and it can be considered to indicate the content of the liquid fluorocarbon medium in the primary storage tank 110 in the main transformer room 430 by using the humidity, the weight, etc. parameters, so as to determine whether the winding seal room 420 leaks and the amount of the leakage. The step of monitoring the environmental parameter may further comprise: the oxygen concentration in the main transformer room 430 is monitored. The oxygen concentration can be used as an auxiliary judgment, and if the halogen concentration in the gas in the main transformer room 430 is monitored to increase and the oxygen concentration in the gas is monitored to decrease, it indicates that leakage has occurred in the winding seal room 420.
The first preset condition includes: the halogen concentration exceeds a preset value, and the humidity is lower than the preset value; the second preset condition includes: the halogen concentration exceeds a preset value, and the humidity is higher than the preset value.
For example, the first preset condition includes: the halogen concentration exceeds a preset value L, and the humidity is lower than a preset value S; the second preset condition includes: the halogen concentration exceeds a preset value L and the humidity is higher than a preset value S. Referring to fig. 2, monitoring the halogen concentration, and when the halogen concentration is monitored to be less than L, continuously monitoring the environmental parameters in the main transformer room 430 without reaching a first preset condition; when the halogen concentration is monitored to be larger than or equal to L, monitoring the humidity, and if the humidity is smaller than S, detecting the leakage point of the winding seal space 420 when the first preset condition is reached; when the halogen concentration is monitored to be larger than or equal to L, the humidity is monitored, if the humidity is larger than or equal to S, the second preset condition is met, the storage device 100 needs to be started, and leaked fluorocarbon media are stored in a centralized mode.
It is understood that the preset value of halogen concentration and the preset value of humidity can be determined according to actual requirements. The first preset condition and the second preset condition may further include: the oxygen concentration reaches or is lower than the preset value Y, and the oxygen concentration can be used as auxiliary judgment.
It should be noted that the step of starting up the storage apparatus 100 includes: the fluorocarbon media in the primary storage tank 110 is transferred to the secondary storage tank 120.
For example, as shown in FIG. 2, the step of booting the memory device 100 includes: the fluorocarbon media in the primary storage tank 110 is transferred to the secondary storage tank 120. First immersed pump 140 can pump the fluorocarbon medium pump in the one-level storage pool 110 into feed liquor pipe 130, reduces the resistance of fluorocarbon medium when feed liquor pipe 130 communicates in the one-level storage pool 110 one-end flows in, makes the fluorocarbon medium who reveals also can carry smoothly to the second grade storage pool 120 under the lower circumstances of liquid level and hydraulic pressure in the one-level storage pool 110 in, guarantees the recovery efficiency of fluorocarbon medium, reduces the loss of fluorocarbon medium.
It is understood that the liquid inlet pipe 130 may be provided with a check valve, and the check valve on the liquid inlet pipe 130 should be opened when the storage device 100 is activated.
It should be noted that the step of monitoring the amount of liquid stored in secondary storage pool 120 includes: monitoring the hydraulic pressure in secondary reservoir 120; the level of liquid in secondary storage tank 120 is monitored.
For example, as shown in FIG. 2, the step of monitoring the amount of liquid stored in secondary storage pool 120 comprises: monitoring the hydraulic pressure in secondary reservoir 120; the level of liquid in secondary storage tank 120 is monitored. The hydraulic pressure and the liquid level in the secondary storage tank 120 can indicate the liquid storage amount in the secondary storage tank 120, and if the liquid storage amount reaches the recovery preset condition, the recovery device 300 is started.
It should be noted that the method for managing the fluorocarbon medium of the evaporative cooling transformer further comprises the following steps: comparing the hydraulic value with a hydraulic preset value; if the hydraulic pressure value is lower than the hydraulic pressure preset value, the liquefaction of the fluorocarbon medium in the secondary storage pool 120 is continued or accelerated; if the hydraulic pressure reaches or exceeds the hydraulic pressure preset value, a predetermined amount of water is injected into the secondary storage pool 120.
For example, as shown in fig. 2, after the fluorocarbon medium in the first-stage storage tank 110 is transferred to the second-stage storage tank 120, the hydraulic pressure value is compared with the preset hydraulic pressure value P1Carrying out comparison; if the hydraulic pressure value is lower than the preset hydraulic pressure value P1Starting the condenser 170 to continue or accelerate the liquefaction of the fluorocarbon medium in the secondary storage tank 120; if the hydraulic pressure value reaches or exceeds the preset hydraulic pressure value P1 Water injection pipe 150 is activated to inject a predetermined amount of water into secondary storage pool 120. Monitoring the hydraulic pressure value if the hydraulic pressure value is less than P1If the storage amount of the fluorocarbon medium in the secondary storage tank 120 is small, the condenser 170 is started to condense a small amount of evaporated fluorocarbon medium into liquid reflux, so that the fluorocarbon medium in the secondary storage tank 120 is maintained in liquid storage; if the hydraulic pressure value is more than or equal to P1It is stated that the storage amount of the fluorocarbon medium in the secondary storage tank 120 is large, and the evaporation amount of the fluorocarbon medium is also large at this time, and the large amount of gaseous fluorocarbon medium may cause the air pressure in the secondary storage tank 120 to be too large, thereby causing the sealability of the secondary storage tank 120 to be reduced, so that a predetermined amount of water is injected to water-seal the fluorocarbon medium in the secondary storage tank 120, and the evaporation of the fluorocarbon medium in the liquid is reduced, thereby reducing the evaporation loss of the fluorocarbon medium.
It is understood that the specific value of the hydraulic preset value is not limited, and can be set according to actual requirements. The water injection pipe 150 may be provided with a check valve, and the check valve of the water injection pipe 150 should be opened first when the water injection pipe 150 is started. The preset amount of the primary water injection is not limited, and the water quantity enough for water sealing of the fluorocarbon medium can be set according to actual requirements.
It should be noted that the method for managing the fluorocarbon medium of the evaporative cooling transformer further comprises the following steps: after water is injected, the liquid level height is compared with a water seal preset value; if the liquid level is lower than the water seal preset value, injecting water into the secondary storage pool 120 until the liquid level reaches the water seal preset value; if the liquid level height reaches or exceeds the water seal preset value, the liquefaction of the fluorocarbon medium in the secondary storage tank 120 is continued or accelerated.
For example, as shown in FIG. 2, after filling water, the liquid level is compared with a preset water seal value H1Carrying out comparison; if the liquid level is lower than the water seal preset value H1Starting water injection pipe 150, injecting water into secondary storage pool 120 until the liquid level reaches water seal preset value H1(ii) a If the liquid level height reaches or exceeds the water seal preset value H1Condenser 170 is activated to continue or accelerate the liquefaction of the fluorocarbon medium in secondary storage tank 120. Hydraulic value greater than or equal to P1During the process, the fluorocarbon medium in the secondary storage pool 120 is large in storage capacity and can be recovered at any time, the water injection pipe 150 firstly injects a predetermined amount of water into the secondary storage pool 120, then the liquid level height is monitored, and if the liquid level height is less than H1Starting water injection pipe 150, injecting water into secondary storage pool 120 until the liquid level reaches water seal preset value H1So that the liquid in the secondary storage tank 120 can generate enough hydraulic pressure to ensure that the liquid in the secondary storage tank 120 can be recovered at any time; if the liquid level height is more than or equal to H1The condenser 170 is activated to liquefy and reflux the gaseous fluorocarbon medium in the secondary storage tank 120. The water level in the secondary storage pool 120 after water injection is ensured not to be lower than H through the steps1The fluorocarbon medium in the secondary storage pool 120 can be recycled at any time, and the recycling time can be selected according to needs, so that the method is flexible.
It can be understood that the specific value of the water seal preset value is not limited, and can be set according to actual requirements.
It should be noted that the preset recycling conditions include: the hydraulic pressure value reaches or exceeds a hydraulic pressure preset value, and the liquid level height reaches or exceeds a recovery preset value.
For example, the recycling preset conditions include: the hydraulic pressure value reaches or exceeds the preset hydraulic pressure value P1The liquid level height reaches or exceeds a recovery preset value H2. Referring to FIG. 2, the hydraulic pressure value is monitored, the monitored hydraulic pressure value is < P1When the preset condition for recovery is not met, the condenser 170 is started to maintain the fluorocarbon medium in a liquid state; when the hydraulic value is monitored to be more than or equal to P1Monitoring the liquid level height, and if the liquid level height is more than or equal to H2If the preset recovery condition is met, the recovery device 300 needs to be started to recover the fluorocarbon medium in the secondary storage tank 120.
It can be understood that the specific value of the recycled preset value is not limited, and can be set according to actual requirements.
It should be noted that the method for managing the fluorocarbon medium of the evaporative cooling transformer further comprises the following steps: monitoring the pressure in secondary reservoir 120; comparing the air pressure value with an air pressure preset value; if the air pressure value reaches or exceeds the air pressure preset value, the liquefaction of the fluorocarbon medium in the secondary storage tank 120 is continued or accelerated.
For example, as shown in fig. 2, after the fluorocarbon medium in the first-stage storage tank 110 is transferred into the second-stage storage tank 120, the pressure value in the second-stage storage tank 120 is monitored; the air pressure value and the preset air pressure value P are compared2Carrying out comparison; if the air pressure value reaches or exceeds the preset air pressure value P2The condenser 170 is started or the power of the condenser 170 is increased to continue or accelerate the liquefaction of the fluorocarbon medium in the secondary storage tank 120. Monitoring the air pressure value if the air pressure value is less than P2If the gas state fluorocarbon medium in the secondary storage pool 120 is less, the pressure value is continuously monitored; if the air pressure value is more than or equal to P2It is noted that the secondary storage tank 120 has more gaseous fluorocarbon medium, and the power of the condenser 170 needs to be increased to accelerate the liquefied reflux of the gaseous fluorocarbon medium, so that the fluorocarbon medium in the secondary storage tank 120 maintains liquid storage.
It is understood that the specific value of the preset air pressure value is not limited, and can be set according to actual requirements.
The step of starting the recovery device 300 includes: the fluorocarbon medium in secondary storage tank 120 is recycled.
For example, as shown in fig. 2, the step of activating the recycling apparatus 300 includes: starting a second immersed pump 320, a filter 330 and a pressure controller 340 to recycle the fluorocarbon medium in the secondary storage tank 120; after completion of the recovery, the second immersed pump 320, the filter 330 and the pressure controller 340 are closed, and the recovery operation is terminated. The second immersed pump 320 can pump the fluorocarbon medium in the secondary storage tank 120 into the recovery pipe 310, so as to reduce the resistance of fluorocarbon medium recovery; the filter 330 can filter impurities in the fluorocarbon medium in the secondary storage tank 120, and improve the quality of the recovered fluorocarbon medium, so as to ensure that the recovered fluorocarbon medium can be recycled; the pressure controller 340 is used for controlling the pressure of the fluorocarbon medium in the recovery process, so as to control the recovery speed.
It is understood that the recovery pipe 310 may be provided with a check valve, and the check valve of the recovery pipe 310 should be opened first when the recovery device 300 is activated.
The evaporative cooling transformer management method according to an embodiment of the present invention is described in detail in a complete embodiment with reference to fig. 2. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.
Monitoring environmental parameters in a main transformer room 430, namely monitoring halogen concentration and oxygen concentration, and if the halogen concentration is less than L and the oxygen concentration is more than Y, indicating that the fluorocarbon medium in the winding seal room 420 is not leaked and continuously monitoring; if the halogen concentration is greater than or equal to L and the oxygen concentration is less than or equal to Y, it indicates that the leakage of the fluorocarbon medium in the winding seal room 420 has occurred. Monitoring humidity, if the humidity is less than S, indicating that only trace leakage occurs in the winding seal room 420, and liquid fluorocarbon medium is not stored in the primary storage pool 110, and alarming to the outside to inform workers to check hidden leakage points of the winding seal room 420 and to process in time; if the humidity is greater than or equal to S, it indicates that a relatively large amount of leakage has occurred in the winding seal 420, and a certain amount of liquid fluorocarbon medium has been stored in the primary storage pool 110, and the storage device 100 needs to be started for storage.
Starting the storage device 100, starting the one-way valve on the liquid inlet pipe 130 and the first immersed pump 140, conveying the liquid fluorocarbon medium in the first-stage storage tank 110 to the second-stage storage tank 120, and monitoring the hydraulic pressure value, the liquid level height and the air pressure value in the second-stage storage tank 120. Continuously monitoring the air pressure value, if the air pressure value is less than or equal to P2Then it indicates that there is less gaseous fluorocarbon medium in secondary storage pool 120 and the monitoring continues; if the air pressure value is greater than P2If the amount of the gaseous fluorocarbon medium in the secondary storage tank 120 is large, the condenser 170 needs to be turned on or the power of the condenser 170 needs to be increased to accelerate the liquefaction reflux of the gaseous fluorocarbon medium.
Monitoring the hydraulic pressure value if the hydraulic pressure value is less than P1Then indicate that secondary storage pool 120 is withinThe amount of the liquid fluorocarbon medium is small, the condenser 170 is started to carry out liquefaction reflux on the gaseous fluorocarbon medium; if the hydraulic pressure value is more than or equal to P1If the amount of the fluorocarbon media in the secondary storage pool 120 is less than the preset value, the one-way valve of the water injection pipe 150 is opened, and the water is injected into the secondary storage pool 120 to seal the fluorocarbon media in the secondary storage pool 120.
After the primary water injection, monitoring the liquid level height, and if the liquid level height is less than H1If the liquid in the secondary storage tank 120 is not enough to be recovered, the water is continuously filled until the liquid level is equal to H1(ii) a If H is1Not more than liquid level and height less than H2If the amount of liquid stored in secondary storage tank 120 is sufficient for recycling, but has not yet reached the amount of liquid stored in the secondary storage tank that must be recycled, condenser 170 may be activated to continue storage; if the liquid level height is more than or equal to H2Then, it means that the liquid storage capacity in secondary storage pool 120 has reached the maximum storage capacity in secondary storage pool 120, and it is necessary to start recycling apparatus 300 immediately when the recycling condition is reached.
Starting the recovery device 300, opening the one-way valve on the recovery pipe 310, the second immersed pump 320, the filter 330 and the pressure controller 340, and recovering the liquid in the secondary storage tank 120; after completion of the recovery, the one-way valve of the recovery pipe 310, the second immersed pump 320, the filter 330, and the pressure controller 340 are closed, and the recovery operation is terminated.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (20)
1. An evaporative cooling transformer fluorocarbon medium management system, which is applied to the management of fluorocarbon medium in an evaporative cooling transformer, wherein the evaporative cooling transformer comprises a transformer winding, a winding seal room and a main transformer room, the transformer winding and the fluorocarbon medium are all accommodated in the winding seal room, part of the transformer winding is immersed in the fluorocarbon medium, and the winding seal room is accommodated in the main transformer room, and the system is characterized by comprising:
the storage device comprises a primary storage pool, a secondary storage pool and a liquid inlet pipe, wherein the primary storage pool is arranged below the winding seal room and used for temporarily storing the fluorocarbon medium leaked from the winding seal room, the secondary storage pool is arranged outside the main transformer room, and the primary storage pool is communicated with the secondary storage pool through the liquid inlet pipe;
the monitoring device comprises a halogen monitor and a humidity monitor, the halogen monitor is mounted on the inner wall of the main transformer room and is used for monitoring the halogen concentration in the main transformer room, the humidity monitor is arranged in the primary storage pool and is used for monitoring whether the fluorocarbon medium exists in the primary storage pool or not;
the recycling device comprises a recycling pipe, the recycling pipe is communicated with the secondary storage pool, and the recycling pipe is used for recycling the fluorocarbon medium in the secondary storage pool.
2. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the monitoring device further includes an oxygen monitor mounted to an inner wall of the main transformer room, the oxygen monitor being configured to monitor oxygen concentration in the main transformer room.
3. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the storage means further includes a first immersed pump mounted at one end of the liquid inlet pipe in communication with the primary storage tank.
4. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the storage means further comprises a water injection pipe, the water injection pipe being in communication with the secondary storage tank, the water injection pipe being for injecting water into the secondary storage tank.
5. The evaporative cooling transformer fluorocarbon media management system of claim 4, wherein the storage means further includes a level sensor mounted to an inside wall of the secondary storage tank.
6. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the storage means further includes a condenser mounted on top of the secondary storage tank.
7. The evaporative cooling transformer fluorocarbon media management system of claim 6, wherein the storage means further includes a hydraulic pressure sensor mounted at the bottom of the secondary storage tank.
8. The evaporative cooling transformer fluorocarbon media management system of claim 6, wherein the storage means further includes a gas pressure sensor mounted in the upper portion of the secondary storage tank for sensing the gas pressure in the secondary storage tank.
9. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the recovery apparatus further includes a second immersed pump connected to one end of the recovery tube communicating with the secondary storage tank.
10. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the recovery apparatus further includes a filter connected to one end of the recovery tube in communication with the secondary storage tank.
11. The evaporative cooling transformer fluorocarbon media management system of claim 1, wherein the recovery apparatus further comprises a pressure controller disposed on the recovery tube, the pressure controller being configured to control the pressure of the fluorocarbon media during recovery.
12. An evaporative cooling transformer fluorocarbon medium management method applied to the evaporative cooling transformer fluorocarbon medium management system of any one of claims 1 to 11, characterized by comprising the steps of:
monitoring the halogen concentration and the humidity in the main transformer room by using the monitoring device;
comparing the halogen concentration and the humidity with a first preset condition and a second preset condition;
if the halogen concentration and the humidity reach the first preset condition, checking a leakage point between the winding seals; if the halogen concentration and the humidity reach the second preset condition, starting a storage device;
monitoring the liquid storage amount in the secondary storage pool;
comparing the liquid storage quantity with a recovery preset condition;
and if the liquid storage amount reaches the recovery preset condition, starting a recovery device.
13. The evaporative cooling transformer fluorocarbon media management method of claim 12, wherein the first preset condition includes: the halogen concentration exceeds a halogen preset value, and the humidity is lower than a humidity preset value; the second preset condition includes: the halogen concentration exceeds a halogen preset value, and the humidity is higher than a humidity preset value.
14. The evaporative cooling transformer fluorocarbon media management method of claim 12, wherein the step of activating the storage means includes:
delivering the fluorocarbon media in the primary storage tank to the secondary storage tank.
15. The evaporative cooling transformer fluorocarbon media management method of claim 12, wherein the step of monitoring the amount of liquid storage in the secondary storage pool includes:
monitoring a hydraulic value in the secondary storage pool;
and monitoring the liquid level height in the secondary storage tank.
16. The evaporative cooling transformer fluorocarbon media management method of claim 15, further comprising the steps of:
comparing the hydraulic value with a hydraulic preset value;
if the hydraulic pressure value is lower than the hydraulic pressure preset value, the liquefaction of the fluorocarbon medium in the secondary storage pool is continued or accelerated; and if the hydraulic value reaches or exceeds the hydraulic preset value, injecting a preset amount of water into the secondary storage pool.
17. The evaporative cooling transformer fluorocarbon media management method of claim 16, further comprising the steps of:
after water is injected, comparing the liquid level height with a water seal preset value;
if the liquid level height is lower than the water seal preset value, injecting water into the secondary storage pool until the liquid level height reaches the water seal preset value; if the liquid level height reaches or exceeds the water seal preset value, the liquefaction of the fluorocarbon medium in the secondary storage tank is continued or accelerated.
18. The evaporative cooling transformer fluorocarbon media management method of claim 15, wherein the recovery preset conditions include: the hydraulic value reaches or exceeds a hydraulic preset value, and the liquid level height reaches or exceeds a recovery preset value.
19. The evaporative cooling transformer fluorocarbon media management method of claim 12, further comprising the steps of:
monitoring the air pressure value in the secondary storage pool;
comparing the air pressure value with an air pressure preset value;
if the air pressure value reaches or exceeds the air pressure preset value, the liquefaction of the fluorocarbon medium in the secondary storage tank is continued or accelerated.
20. The evaporative cooling transformer fluorocarbon media management method of claim 12, wherein the step of activating the recovery means includes:
and recycling the fluorocarbon medium in the secondary storage pool.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104009589A (en) * | 2014-06-18 | 2014-08-27 | 东方电气集团东方电机有限公司 | Evaporative cooling medium leakage monitoring and treating system |
| CN206002252U (en) * | 2016-08-29 | 2017-03-08 | 常州埃依琦科技有限公司 | A kind of SF6 gas transformer reveals early warning recovery system |
| WO2019128451A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Leakage detection method, device, and electronic apparatus |
| CN209691532U (en) * | 2019-03-28 | 2019-11-26 | 深圳供电规划设计院有限公司 | A kind of 220kV transpiration-cooled transformer |
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2021
- 2021-05-28 CN CN202110588197.5A patent/CN113363057B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009589A (en) * | 2014-06-18 | 2014-08-27 | 东方电气集团东方电机有限公司 | Evaporative cooling medium leakage monitoring and treating system |
| CN206002252U (en) * | 2016-08-29 | 2017-03-08 | 常州埃依琦科技有限公司 | A kind of SF6 gas transformer reveals early warning recovery system |
| WO2019128451A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Leakage detection method, device, and electronic apparatus |
| CN209691532U (en) * | 2019-03-28 | 2019-11-26 | 深圳供电规划设计院有限公司 | A kind of 220kV transpiration-cooled transformer |
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