CN202662525U - Gas relay device with online detection function - Google Patents
Gas relay device with online detection function Download PDFInfo
- Publication number
- CN202662525U CN202662525U CN 201220300247 CN201220300247U CN202662525U CN 202662525 U CN202662525 U CN 202662525U CN 201220300247 CN201220300247 CN 201220300247 CN 201220300247 U CN201220300247 U CN 201220300247U CN 202662525 U CN202662525 U CN 202662525U
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- main body
- relay
- relay main
- oil
- valve
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Abstract
The utility model discloses a gas relay device with an online detection function, and aims to provide a gas relay device, which can be used for online simulation detection, and is convenient to maintain and replace, long in service life and low in oil pressure loss. The gas relay device comprises a relay main body and a junction box. An oil inlet port of the relay main body is connected with an oil tank, and a valve is arranged at the oil inlet port, and is connected with the relay main body through a flange. A detection through hole communicated with the oil inlet port of the relay main body is formed on the lateral surface of the flange. A sealing cover is arranged on the detection through hole.
Description
Technical field
The utility model relates to a kind of protective device of oil-filled transformer, is specifically related to a kind of a kind of Buchholz relay device that possesses online measuring ability that is applied on the oil-filled transformer.
Background technology
Buchholz relay is the important safety protective device on the oil-filled transformer; it is installed in the connecting tube between oil tank of transformer and the oil conservator; connection signal or trip(ping) circuit under the effect of the gas that power transformer interior fault produces; make give the alarm signal or transformer is excised of relative assembly from electrical network, reach the effect of protection transformer.For example, China Patent Publication No. CN2072274, in open day on February 27th, 1991, the name of innovation and creation is called a kind of Buchholz relay, and this application case discloses a kind of Buchholz relay, and by housing, loam cake, fuse, vent plug and tripping operation probe form.It is simple that this Buchholz relay has technique, but along with the increase of the time limit, Buchholz relay each parts in long-term use procedure may wear out, and therefore need to repair or replace; But because therefore fuel tank and the oil conservator of Buchholz relay connection transformer need to discharge the fluid in fuel tank, oil conservator and other associated members when maintenance or replacing Buchholz relay; This so that Buchholz relay in maintenance or when changing not only operational sequence complicated, waste time and energy, and cause the waste of fluid.In addition, along with the increase of the time limit, the Buchholz relay accuracy of action can be affected, and therefore need to the function of Buchholz relay be detected.Existing Buchholz relay can't carry out online simulation and detect, and namely can't use function to detect to it when Buchholz relay is installed on the pipeline.The Function detection of existing Buchholz relay all detects after dismounting.
The utility model content
The purpose of this utility model is can't carry out the online simulation detection in order to overcome existing Buchholz relay, and when maintenance or replacing, waste time and energy, cause the problem of fluid waste, provide a kind of online simulation that carries out to detect, and be convenient to maintenance, change, can not cause the fluid waste, a kind of Buchholz relay device that possesses online measuring ability of long service life.
The technical solution of the utility model is:
A kind of Buchholz relay device that possesses online measuring ability, comprise relay main body, terminal box, the oil-feed port that is connected with fuel tank on the described relay main body is provided with valve, be connected by flange between described valve and the relay main body, and the side of this flange is provided with the detection through hole that is connected with the oil-feed port of relay main body, detects through hole and is provided with seal cover.If in the time of need to detecting the Buchholz relay function: valve-off at first; Then seal cover is opened; By inflation comes the gas of analogue transformer internal fault generation in the through hole to detecting, and then realize the online simulation of Buchholz relay is detected.And can be with valve closing when needing repairing or change Buchholz relay, fluid and Buchholz relay in the fuel tank are separated, therefore the relay main body directly can be disassembled from valve, repair or replace, can avoid so complicated operating process, also can not cause the waste of fluid simultaneously.
As preferably, described valve is hand operated gate valve, and the flashboard of described hand operated gate valve and the hermetically-sealed construction between the valve seat are hard sealing structure.Flashboard and the hermetically-sealed construction between the valve seat of hand operated gate valve are hard sealing structure, have improved useful life.In addition, gate valve can 100% full open, and the circulation stroke is short, can reduce flow resistance, reduce the loss of oil pressure.
As preferably, have a round mouth on the flashboard of hand operated gate valve; The oil-feed port of described relay main body is rounded, and the bore of the round mouth of described flashboard is identical with the bore of relay main body oil-feed port.Because the round mouth bore of flashboard is identical with the bore of relay main body oil-feed port, and the opening of hand operated gate valve can 100% unlatching; Therefore when fluid is flowed through hand operated gate valve, can effectively reduce flow resistance, reduce the loss of oil pressure.
As preferably, fuel-displaced port relative with the oil-feed port on the relay main body is provided with hand operated gate valve.When maintenance relay main body, the oil-feed port of relay main body and the valve of fuel-displaced port all can be closed, avoid the fluid in the relay main body to flow out.
As preferably, the relative both sides of relay main body are provided with observation window and observation window is rounded, and the window place of described observation window is provided with the window lid, and the window lid is hinged on the relay main body.
The beneficial effects of the utility model are: have and be convenient to maintenance, replacing, can carry out online simulation and detect long service life, the characteristics that the oil pressure loss is low.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure: relay main body 1, terminal box 2, valve 3, observation window 4, window lid 5, fuel tank 7, pipeline 8, seal cover 9, detection through hole 10, flange 11.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1, a kind of Buchholz relay device that possesses online measuring ability comprises relay main body 1, terminal box 2.The oil-feed port that is connected with fuel tank 7 on the relay main body 1 is provided with valve 3.Fuel-displaced port relative with the oil-feed port on the relay main body also is provided with valve 3.Valve 3 is hand operated gate valve, and is connected by flange 11 between valve 3 and the relay main body 1.The flashboard of hand operated gate valve and the hermetically-sealed construction between the valve seat are hard sealing structure, and namely the flashboard sealing surface of hand operated gate valve and sealing surface of seat are the hermetically-sealed construction of metal to metal.The valve seat of hand operated gate valve is made of cast iron.Have a round mouth on the flashboard of hand operated gate valve, the oil-feed port of described relay main body 1 is rounded, and the bore of the round mouth of described flashboard is identical with the bore of relay main body oil-feed port.
The side of the flange between the valve 3 of the oil-feed port of relay main body 1 and the relay main body is provided with the detection through hole 10 that is connected with the oil-feed port of relay main body, detects through hole and is provided with seal cover 9.The relative both sides of relay main body 1 be provided with observation window 4 and observation window rounded.The window place of observation window 4 is provided with window lid 5, and the window lid is hinged on the relay main body.
As shown in Figure 1, relay main body 1 and valve 3 are between fuel tank 7 and oil conservator, and the pipeline 8 that passes through is connected.The Buchholz relay of this programme detects through hole and seals by seal cover, and open two valves 3 fully when normal operation.The Buchholz relay device online simulation testing process of this programme is as follows: at first the valve 3 of the oil-feed port that is connected with fuel tank 7 on the relay main body 1 is closed, and the valve 3 of fuel-displaced port is opened.Then seal cover 9 is opened, to detecting through hole 10 interior inflations, gas enters relay main body 1 inside by detecting through hole 10 by external equipment; With this gas that comes the analogue transformer internal fault to produce, and then realize the online simulation of Buchholz relay is detected.If the action that Buchholz relay has trip(ping) circuit or gives the alarm signal or transformer is excised from electrical network in gas replenishment process illustrates that then the Buchholz relay function is normal; Otherwise illustrate that then Buchholz relay need to keep in repair.
Claims (5)
1. Buchholz relay device that possesses online measuring ability, comprise relay main body (1), terminal box (2), it is characterized in that, the upper oil-feed port that is connected with fuel tank (7) of described relay main body (1) is provided with valve (3), be connected by flange (11) between described valve and the relay main body, and the side of this flange is provided with the detection through hole (10) that is connected with the oil-feed port of relay main body, detects through hole and is provided with seal cover (9).
2. a kind of Buchholz relay device that possesses online measuring ability according to claim 1 is characterized in that described valve (3) is hand operated gate valve, and the flashboard of described hand operated gate valve and the hermetically-sealed construction between the valve seat are hard sealing structure.
3. a kind of Buchholz relay device that possesses online measuring ability according to claim 2 is characterized in that the flashboard of described hand operated gate valve is provided with a round mouth; The oil-feed port of described relay main body is rounded, and the bore of the round mouth of described flashboard is identical with the bore of the oil-feed port of relay main body.
4. according to claim 1 and 2 or 3 described a kind of Buchholz relay devices that possess online measuring ability, it is characterized in that the upper fuel-displaced port relative with the oil-feed port of described relay main body (1) is provided with hand operated gate valve.
5. according to claim 1 and 2 or 3 described a kind of Buchholz relay devices that possess online measuring ability, it is characterized in that, the relative both sides of described relay main body (1) be provided with observation window (4) and observation window rounded, the window place of described observation window is provided with window lid (5), and the window lid is hinged on the relay main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300247 CN202662525U (en) | 2012-06-21 | 2012-06-21 | Gas relay device with online detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300247 CN202662525U (en) | 2012-06-21 | 2012-06-21 | Gas relay device with online detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662525U true CN202662525U (en) | 2013-01-09 |
Family
ID=47457411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220300247 Expired - Fee Related CN202662525U (en) | 2012-06-21 | 2012-06-21 | Gas relay device with online detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202662525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107256787A (en) * | 2017-07-25 | 2017-10-17 | 国网福建省电力有限公司 | A kind of dual transformer Buchholz relay device and application method for exempting from dismounting experiment |
-
2012
- 2012-06-21 CN CN 201220300247 patent/CN202662525U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107256787A (en) * | 2017-07-25 | 2017-10-17 | 国网福建省电力有限公司 | A kind of dual transformer Buchholz relay device and application method for exempting from dismounting experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |