CN202901410U - Combined type pressure relief valve - Google Patents
Combined type pressure relief valve Download PDFInfo
- Publication number
- CN202901410U CN202901410U CN 201220241551 CN201220241551U CN202901410U CN 202901410 U CN202901410 U CN 202901410U CN 201220241551 CN201220241551 CN 201220241551 CN 201220241551 U CN201220241551 U CN 201220241551U CN 202901410 U CN202901410 U CN 202901410U
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- CN
- China
- Prior art keywords
- pressure
- relief valve
- valve
- pressure relief
- butterfly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model discloses a combined type pressure relief valve, and belongs to the technical field of transformers. The combined type pressure relief valve comprises a pressure relief valve seat has the functions of a butterfly valve and a valve body of the pressure relief valve, wherein the valve body is opened for releasing pressure when the pressure in a transformer oil tank reaches an opening pressure value, and the valve body is connected with the valve seat of the pressure relief valve through a connection nut. Due to the fact that the pressure relief valve and the butterfly valve are integrated, the combined type pressure relief valve has the function of releasing the pressure, can switch on and switch off transformer oil in the oil tank and a relief valve, increases the effects of a product, brings convenience to installation, use and maintenance of a user, and lowers the cost of a product. When the pressure relief valve needs overhauling and maintaining, the butterfly valve is switched off, then the connection nut of the butterfly valve and the relief valve is unscrewed, and the relief valve and the butterfly valve are separated conveniently for maintenance.
Description
Technical field
The utility model relates to transformer technology, particularly a kind of combined pressure relief valve.
Background technique
Butterfly valve originally and pressure relief valve are two independently products, during use, butterfly valve is contained in transformer case covers, and relief valve are installed on the butterfly valve again, install cumbersomely, and volume is large, Heavy Weight, and causes the possible breakthrough of fuel tank to increase.Moreover, existing most of users are Cost reduction, generally at oil tank of transformer on setting pressure relief valve butterfly valve is not installed, like this when needs are safeguarded pressure relief valve and are overhauled, just the transformer oil of transformer oil box top must be bled off pressure relief valve could be disassembled and safeguard or change, like this site operation be brought great inconvenience and trouble.
The model utility content
In view of this, the purpose of this utility model is to provide a kind of compound pressure relief valve, is used for user friendly I﹠M.
The utility model provides a kind of compound pressure relief valve, comprising:
Earth pressure release valve base with butterfly valve function;
Be used for when the pressure in the oil tank of transformer reaches the cracking pressure value, opening the valve body with the pressure relief valve of release pressure, be connected with the valve seat of pressure relief valve by the attaching nut.
The utility model compared with prior art, its advantage is: because pressure relief valve and butterfly valve form one, make this model utility product except having pressure relief function, the break-make performance that also has conducting, the interior transformer oil of cut-off fuel tank and relief valve, increased the effect of product, be convenient to installing and using and safeguarding of user, reduce the cost of product.When pressure relief valve needs repair and maintenance, close butterfly valve, then the attaching nut of butterfly valve and relief valve is loosened down easily relief valve to be separated in butterfly valve and safeguard.In addition, this pressure relief valve also has the pressure monitoring function except having pressure relief function, can show at any time pressure in fuel tank pressure and the output alarm signal in can the on-line monitoring fuel tank, scents a hidden danger and in time processes, and avoids the further generation of fault.
Description of drawings
The structural representation of the combined pressure relief valve that Fig. 1 provides for the utility model embodiment.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail.
The utility model belongs to parts or the assembly of oil-filled electric transformer, is installed on the fuel tank cap or sidewall of transformer, when transformer or relief valve are overhauled, can forward the butterfly valve on the relief valve to closed condition, then relief valve is disassembled and safeguards.When the pressure in the oil tank of transformer met or exceeded the setting value of pressure relief valve, this relief valve discharged the pressure in the fuel tank, played the effect of protecting to oil tank of transformer.
As shown in Figure 1, in the present embodiment, the valve seat with butterfly valve and pressure relief valve is integrally formed the earth pressure release valve base 1 that formation has the butterfly valve function, and be connected with the valve body of pressure relief valve by attaching nut 2 and connecting bolt 3, consist of the combined pressure relief valve.
The valve body 4 of pressure relief valve is used for when the pressure in the oil tank of transformer reaches the cracking pressure value of pressure relief valve, and this combined pressure relief valve is opened, and discharges the pressure of fuel tank internal, plays relief valve to the protection effect of fuel tank.
Pressure air pipe 5 is arranged at the logical oil port of the valve body 4 of pressure relief valve, and with the internal communication of the valve body 4 of described pressure relief valve, the mineralization pressure path is used for the pressure in the conduction oil tank of transformer.
Pressure transducer 6 is connected with described pressure air pipe 5, for detection of the pressure (being the pressure in the oil tank of transformer) of valve body 4 inside of described pressure relief valve.
Pressure transmitter 7 is connected with described pressure transducer 6, is used for detected pressure signal is converted to the analog signal output of 4-20mA.
4 ~ 20mA signal of pressure transmitter 7 output is wired on the control instrument in the control room by the tenminal blocks in the electrical outlet box 8 on the pressure relief valve and shows and control that described electrical outlet box 8 links to each other with pressure transmitter 7.
Wherein, pressure transmitter 7 is fixed by screws on the stage clip pad of earth pressure release valve body.
This intelligent compounding pressure relief valve is connected on the oil tank of transformer by the earth pressure release valve base 1 with butterfly valve function, when transformer normally moves butterfly valve is opened to channel status, and this moment, the combined pressure relief valve also entered working state simultaneously.When the pressure in the fuel tank reached the cracking pressure value of combined pressure relief valve, the combined pressure relief valve was opened, and discharged the pressure of fuel tank internal, played the protection effect to fuel tank; By pressure transducer 6 and pressure transmitter 7 pressure in the fuel tank that detects is changed by electrical outlet box 8 simultaneously and be connected to the instant force value that demonstrates on the interior instrument display in control room (electric field generally has the outdoor room that electrical equipment is shown and controls) in the fuel tank.
Further, can be by predefined a plurality of pressure thresholds on instrument display, when the instant force value in fuel tank reached certain threshold value, output corresponding signal notice alarm or trip switch were used for reporting to the police or tripping operation, reach the effect of protection oil tank of transformer.
When intelligent combined pressure relief valve need to overhaul, can close butterfly valve, the interior liquid of fuel tank this moment is closed in it in fuel tank by butterfly valve.Then pull down the valve body enforcement of pressure relief valve to the maintenance of relief valve, solved and changed the complicated processes that pressure relief valve need to be drained the oil the transformer in the fuel tank, be user-friendly to.
This combined pressure relief valve is to integrate butterfly valve and intelligent pressure relief valve, be convenient to for the pressure monitoring in the oil tank of transformer and control, when wish seals leak test to oil tank of transformer butterfly valve being transformed into closed condition can implement, and is user-friendly to.
In a word, the above is preferred embodiment of the present utility model only, is not be used to limiting protection domain of the present utility model.
Claims (4)
1. a combined pressure relief valve is characterized in that, comprising:
Earth pressure release valve base with butterfly valve function;
Be used for when the pressure in the oil tank of transformer reaches the cracking pressure value, opening the valve body with the pressure relief valve of release pressure, be connected with the valve seat of pressure relief valve by connecting bolt and attaching nut.
2. combined pressure relief valve according to claim 1 is characterized in that, further comprises:
Be used for conducting the pressure air pipe of oil tank of transformer internal pressure, be arranged at the logical oil port of the valve body of described pressure relief valve, be communicated with the valve inner of described pressure relief valve;
Pressure transducer for detection of the valve inner pressure of described pressure relief valve is connected with described pressure air pipe.
3. combined pressure relief valve according to claim 2 is characterized in that, further comprises:
Be used for detected pressure signal is converted to the pressure transmitter of the analog signal output of 4-20mA, be connected with described pressure transducer;
Be used for by wire linking to each other with described pressure transmitter showing the electrical outlet box of control on the analog signal transmission of the described 4-20mA control instrument in the control room.
4. combined pressure relief valve according to claim 3 is characterized in that, described pressure transmitter is fixed by screws on the stage clip pad of earth pressure release valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241551 CN202901410U (en) | 2012-05-25 | 2012-05-25 | Combined type pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241551 CN202901410U (en) | 2012-05-25 | 2012-05-25 | Combined type pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901410U true CN202901410U (en) | 2013-04-24 |
Family
ID=48122081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220241551 Expired - Lifetime CN202901410U (en) | 2012-05-25 | 2012-05-25 | Combined type pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901410U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134967A (en) * | 2015-07-27 | 2015-12-09 | 武汉船用机械有限责任公司 | Emergency releasing valve |
| CN105610078A (en) * | 2016-03-09 | 2016-05-25 | 国网上海市电力公司 | Fire-proof and explosion-proof underground substation |
-
2012
- 2012-05-25 CN CN 201220241551 patent/CN202901410U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134967A (en) * | 2015-07-27 | 2015-12-09 | 武汉船用机械有限责任公司 | Emergency releasing valve |
| CN105134967B (en) * | 2015-07-27 | 2017-11-28 | 武汉船用机械有限责任公司 | A kind of emergent relief valve |
| CN105610078A (en) * | 2016-03-09 | 2016-05-25 | 国网上海市电力公司 | Fire-proof and explosion-proof underground substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |