CN209280210U - A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device - Google Patents
A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device Download PDFInfo
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- CN209280210U CN209280210U CN201821616124.2U CN201821616124U CN209280210U CN 209280210 U CN209280210 U CN 209280210U CN 201821616124 U CN201821616124 U CN 201821616124U CN 209280210 U CN209280210 U CN 209280210U
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- way valve
- orifice
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Abstract
The utility model discloses a kind of power transformer capsule type oil storage cabinet leak detection auxiliary devices, including low pressure nitrogen gas source, triple valve one, needle valve one, dehydrating breather union adaptor, needle valve two, four-way valve one, air pump, flowmeter, four-way valve two, sampling bag quick coupling, sampling bag, needle valve three, triple valve two, air relief cock connector, pressure gauge.It can be injected into the space between cabinet body and capsule by the utility model and want the pure nitrogen of cube and close, sample sack can be vacuumized before sampling, gaseous sample between cabinet body and capsule can be taken to sample sack to and be measured the volume of samples taken, it being capable of the plenum into capsule when oil conservater internal pressure deficiency leads to sample difficulty.The connection status that switch valve is only needed when realizing different function can effectively avoid sample loss or the negative pressure inlet interference caused by leak detection result in sampling process without changing the connection between device and oil conservater.
Description
Technical field
The utility model belongs to power transformer service technique field, in particular to a kind of power transformer capsule-type oil storage
Cabinet leak detection auxiliary device.
Background technique
Capsule type oil storage cabinet is the common attachment of large oil immersed power transformer, primarily serves anti-oil degradation and pressure is mended
The effect repaid.The primary structure of capsule type oil storage cabinet includes cabinet body, capsule, oil level indicating device, air relief cock, note drain line, inhales
Wet device etc..Cabinet body is the cylindrical body being horizontally mounted or polygon hollow metal cylinder, and capsule is mounted on interior of the cabinet, and top is opened
Mouth is sealingly mounted on cabinet body by flange arrangement.Equipment is normally under oil-filled state, and capsule passes through union, dehydrating breather and big
Gas phase is logical, and insulating oil is full of between capsule and cabinet body, and when the oil volume that insulate changes with oil temperature, capsule can pass through expansion or shrinkage
Realize volume compensation.Capsule material has good air-tightness, can be by insulating oil and isolated from atmosphere, and playing prevents insulation oil degradation
Effect.There is 1~2 gas vent sealed with air relief cock at the top of oil conservater, ullage is discharged in openable air relief cock when necessary
Gas.
In order to hunt leak to capsule type oil storage cabinet, it is sometimes desirable to be filled with the low pressure gas containing specific components to capsule
Body expands capsule, and checks whether the gas component in capsule leaks into the outside of capsule.In practical operation, examine for convenience
It surveys, it is sometimes desirable to inject a small amount of pure nitrogen of known volume into the space between cabinet body and capsule by air relief cock and seal
It closes, is detected from air relief cock with sampling bag sampling at regular intervals later；Since sampling will cause between cabinet body and capsule
The variation of residual gas volume, it is sometimes desirable to record the gas volume of every sub-sampling to carry out calculating amendment.Due to oil conservater
Interior gas pressure is influenced by environment temperature, it sometimes appear that the low feelings for leading to the difficult even suck-back of sampling of air pressure in oil conservater
Condition is needed through dehydrating breather union to capsule inflating pressure to complete to sample.It is usually complete using independent device in industry
At above each generic operation, such as to air relief cock need to be opened when inflating between cabinet body and capsule, connect air charging system；After inflation
Air charging system is removed, air relief cock is screwed；Air relief cock need to be opened by taking every time when gas, connect collector；It is removed again after taking gas
Collector screws air relief cock etc..Due to being usually positive pressure inside oil conservater, it be easy to cause sample to damage in frequent disassembly process
It loses, and the part lost is difficult to measure；Negative pressure is likely to occur inside oil conservater in some cases, it may suck-back in disassembly process
Enter air, severe jamming is generated to test result analysis.
Utility model content
The utility model discloses a kind of power transformer capsule type oil storage cabinet leak detection auxiliary devices, pass through the auxiliary device
It can be injected into the space between cabinet body and capsule and want the pure nitrogen of cube and close, it can be before sampling to sample sack
It vacuumizes, the gaseous sample between cabinet body and capsule can be taken to sample sack to and be measured the volume of samples taken, can stored up
The plenum into capsule when Oil Tank internal pressure deficiency leads to sample difficulty.
To achieve the above object, the technical solution of the utility model are as follows:
A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device, including dehydrating breather union adaptor and air relief cock connect
Head, the dehydrating breather union adaptor are connect with an interface of needle valve one, another interface and triple valve one of the needle valve one
First interface connection, the second interface of the triple valve one connect with low pressure nitrogen gas source, the one of third interface and needle valve two
Interface connection, another interface of the needle valve two are connect with the d interface of four-way valve one, a interface and sky of the four-way valve one
Air pump connection, b interface are connect with the c interface of four-way valve two, and the interface connection of c interface and flowmeter, the another of flowmeter connects
Mouth is connect with a interface of four-way valve two, and the b interface of the four-way valve two is connect by sampling bag quick coupling with sampling bag, and d connects
Mouth is connect with an interface of needle valve three, and another interface of the needle valve three is connect with the first interface of triple valve two, described
The second interface of triple valve two is connect with pressure gauge, and third interface is connect with air relief cock connector.
Preferably, the four-way valve one includes two kinds of working conditions: the first connects for a interface and b interface of four-way valve one
It is logical, c interface and d orifice；Second of a interface and d orifice for four-way valve one, b interface and c orifice.
Preferably, the four-way valve two includes two kinds of working conditions: the first connects for a interface and b interface of four-way valve two
It is logical, c interface and d orifice；Second of a interface and d orifice for four-way valve two, b interface and c orifice.
Preferably, the dehydrating breather union adaptor is used to be tightly connected with the dehydrating breather union on oil conservater.
Preferably, the air relief cock connector is used to be tightly connected with the gas vent of oil conservater.
Above-described power transformer capsule type oil storage cabinet leak detection auxiliary device, with the following functions:
(1) state that four-way valve one is switched to a interface and b orifice, c interface and d orifice, by four-way valve two
The state for switching to a interface and d orifice, b interface and c orifice, fully opens needle valve two, slowly opens needle valve
Three, it can be realized the purpose that cube purified nitrogen gas is wanted in injection in the space between cabinet body and capsule.
(2) state that four-way valve one is switched to a interface and b orifice, c interface and d orifice, by four-way valve two
The state of a interface and d orifice, b interface and c orifice is switched to, air pump is started, can be realized and sampling bag is carried out
The purpose vacuumized.
(3) state that four-way valve one is switched to b interface and c orifice, a interface and d orifice, by four-way valve two
The state of a interface and b orifice, c interface and d orifice is switched to, needle valve three is slowly opened, can be realized cabinet body
Gaseous sample between capsule take to sample sack and measure samples taken volume purpose.
(4) needle valve two and needle valve three are closed, needle valve one is slowly opened, keeps the low-pressure nitrogen in low pressure nitrogen gas source logical
Dehydrating breather union adaptor injection oil conservater capsule is crossed, can be realized the purpose to plenum in capsule.
The utility model can realize at least four functions by different valve transfers, without changing during realizing
Become the connection between device and oil conservater, can effectively avoid sample loss in sampling process or negative pressure inlet to leak detection result
Caused by interfere.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of power transformer capsule type oil storage cabinet leak detection auxiliary device of the utility model.
Wherein: 1- low pressure nitrogen gas source, 2- triple valve one, 3- needle valve one, 4- dehydrating breather union adaptor, 5- needle valve two,
6- four-way valve one, 7- air pump, 8- flowmeter, 9- four-way valve two, 10- sampling bag quick coupling, 11- sampling bag, 12- needle valve
Three, 13- triple valve two, 14- air relief cock connector, 15- pressure gauge.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, to this implement the technical solution in novel carry out it is clear, complete
Site preparation description, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative labor
Every other embodiment, fall within the protection scope of the utility model.
A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device, as shown in Figure 1, including and the moisture absorption on oil conservater
The dehydrating breather union adaptor 4 that device union is tightly connected, and air relief cock connector 14 is connect with the gas vent of oil conservater, dehydrating breather connection
Pipe fitting 4 is connect with an interface of needle valve 1, and another interface of needle valve 1 is connect with the first interface of triple valve 1,
The second interface of triple valve 1 is connect with low pressure nitrogen gas source 1, and third interface is connect with an interface of needle valve 25, needle valve two
5 another interface is connect with the d interface of four-way valve 1, and a interface of four-way valve 1 is connect with air pump, b interface and four-way valve
29 c interface connection, c interface are connect with an interface of flowmeter 8, another interface of flowmeter 8 and a interface of four-way valve 29
The b interface of connection, four-way valve 29 is connect by sampling bag quick coupling 10 with sampling bag 11, and the one of d interface and needle valve 3 12
Interface connection, another interface of needle valve 3 12 are connect with the first interface of triple valve 2 13, the second interface of triple valve 2 13
It is connect with pressure gauge, third interface is connect with air relief cock connector 14.Connection structure between above each component is to pass through pipeline
To connect.
Wherein, four-way valve 1 includes two kinds of working conditions: the first is a interface and b orifice of four-way valve 1, c
Interface and d orifice；Second of a interface and d orifice for four-way valve 1, b interface and c orifice.It is other any
Two interfaces are obstructed.
Likewise, four-way valve 29 includes two kinds of working conditions: the first is a interface and b orifice of four-way valve 29,
C interface and d orifice；Second of a interface and d orifice for four-way valve 29, b interface and c orifice.Other
Two interfaces of anticipating are obstructed.
In the case where oil conservater air relief cock is opened, air relief cock connector 14 and gas vent are formed and are tightly connected.
When it is implemented, keeping capsule swollen being filled with the low-pressure gas containing specific components to capsule by other means
It is swollen and empty the dehydrating breather that transformer oil storage after original gas, is removed between cabinet body and capsule, by dehydrating breather union adaptor 4
It is connected to the dehydrating breather union of capsule type oil storage cabinet, opens the air relief cock of oil conservater, air relief cock connector 14 is connected to oil conservater
Gas vent.Needle valve 1, needle valve 25, needle valve 3 12 are turned off under original state.
When into the space between oil conservater cabinet body and capsule, the pure nitrogen of cube is wanted in injection to needs, carry out as follows
Operation: four-way valve 1 is switched to the state of a interface and b orifice, c interface and d orifice first, by four-way valve 29
The state for switching to a interface and d orifice, b interface and c orifice, fully opens needle valve 25, slowly opens needle-like
Valve 3 12 makes the low-pressure nitrogen in low pressure nitrogen gas source 1 through needle valve 25, four-way valve 1, flowmeter 8, four-way valve 29, needle-like
Valve 3 12, triple valve 2 13, air relief cock connector 14 flow between oil conservater cabinet body and capsule, and control real-time traffic and be not higher than
20L/min successively closes needle valve 3 12, needle valve 25 when the volume of flowmeter display injection reaches the volume of requirement,
Stopping is filled with nitrogen.Realize the space-closed between cabinet body and capsule.
It when being ready for sampling, when needing to vacuumize sampling bag 11, proceeds as follows: having first ensured that sampling bag 11
It is tightly connected by sampling bag quick coupling 10 and four-way valve 29, four-way valve 1 is switched into a interface and is connect with b orifice, c
Four-way valve 29 is switched to the state of a interface and d orifice, b interface and c orifice by the state of mouth and d orifice,
Start air pump 7, sampling bag 11 is vacuumized through four-way valve 1, four-way valve 29, sampling bag quick coupling 10.
When needing to take the gaseous sample between cabinet body and capsule to sample sack and measure taken sample volume, carry out
Following operation: four-way valve 1 is switched to the state of b interface and c orifice, a interface and d orifice, by four-way valve 29
The state of a interface and b orifice, c interface and d orifice is switched to, needle valve 3 12 is slowly opened, makes cabinet body and capsule
Between gaseous sample successively through air relief cock connector 14, triple valve 2 13, needle valve 3 12, four-way valve 29, four-way valve 1, stream
Meter 8, four-way valve 29, sampling bag quick coupling 10 flow into sampling bag 11.After sampling, needle valve 3 12 is closed, from flow
Meter 8 reads taken gaseous sample volume.
When oil conservater internal pressure deficiency causes to sample difficulty, the plenum into capsule can be proceeded as follows: being closed
Needle valve 25 and needle valve 3 12 are closed, needle valve 1 is slowly opened, makes the low-pressure nitrogen in low pressure nitrogen gas source 1 through triple valve one
2, needle valve 1, dehydrating breather union adaptor 4 inject oil conservater capsule, and read the reality in oil conservater by pressure gauge 15
Border air pressure；When actual pressure reaches required value, needle valve 1 is closed, pressurization terminates.
The utility model is not limited to above-described specific embodiment, and the foregoing is merely the preferable of the utility model
Case study on implementation is not intended to limit the utility model, made within the spirit and principle of the present invention any
Modifications, equivalent substitutions and improvements etc., should be included within the scope of protection of this utility model.
Claims (5)
- The auxiliary device 1. a kind of power transformer capsule type oil storage cabinet is hunted leak, including dehydrating breather union adaptor and air relief cock connector, It is characterized by: the dehydrating breather union adaptor (4) connect with an interface of needle valve one (3), the needle valve one (3) it is another One interface is connect with the first interface of triple valve one (2), and the second interface of the triple valve one (2) and low pressure nitrogen gas source (1) are even It connects, third interface is connect with an interface of needle valve two (5), another interface and the four-way valve one (6) of the needle valve two (5) The connection of d interface, a interface of the four-way valve one (6) are connect with air pump, and b interface is connect with the c interface of four-way valve two (9), c Interface is connect with an interface of flowmeter (8), and another interface of flowmeter (8) is connect with a interface of four-way valve two (9), described The b interface of four-way valve two (9) is connect by sampling bag quick coupling (10) with sampling bag (11), d interface and needle valve three (12) Interface connection, another interface of the needle valve three (12) connect with the first interface of triple valve two (13), the threeway The second interface of valve two (13) is connect with pressure gauge, and third interface is connect with air relief cock connector (14).
- The auxiliary device 2. power transformer capsule type oil storage cabinet according to claim 1 is hunted leak, it is characterised in that: described four Port valve one (6) includes two kinds of working conditions: the first is a interface and b orifice of four-way valve one (6), c interface and d interface Connection；Second of a interface and d orifice for four-way valve one (6), b interface and c orifice.
- The auxiliary device 3. power transformer capsule type oil storage cabinet according to claim 1 is hunted leak, it is characterised in that: described four Port valve two (9) includes two kinds of working conditions: the first is a interface and b orifice of four-way valve two (9), c interface and d interface Connection；Second of a interface and d orifice for four-way valve two (9), b interface and c orifice.
- The auxiliary device 4. power transformer capsule type oil storage cabinet according to claim 1 is hunted leak, it is characterised in that: the suction Wet device union adaptor is used to be tightly connected with the dehydrating breather union on oil conservater.
- The auxiliary device 5. power transformer capsule type oil storage cabinet according to claim 1 is hunted leak, it is characterised in that: described to put Vent plug connector is used to be tightly connected with the gas vent of oil conservater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821616124.2U CN209280210U (en) | 2018-09-30 | 2018-09-30 | A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821616124.2U CN209280210U (en) | 2018-09-30 | 2018-09-30 | A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device |
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| Publication Number | Publication Date |
|---|---|
| CN209280210U true CN209280210U (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821616124.2U Active CN209280210U (en) | 2018-09-30 | 2018-09-30 | A kind of power transformer capsule type oil storage cabinet leak detection auxiliary device |
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| CN (1) | CN209280210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242450A (en) * | 2021-11-09 | 2022-03-25 | 天威保变（秦皇岛）变压器有限公司 | Static discharge process and effect verification method for large oil-immersed transformer in high-altitude area |
-
2018
- 2018-09-30 CN CN201821616124.2U patent/CN209280210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242450A (en) * | 2021-11-09 | 2022-03-25 | 天威保变（秦皇岛）变压器有限公司 | Static discharge process and effect verification method for large oil-immersed transformer in high-altitude area |
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