CN2636020Y - Pressure indicated pressure releasing valve for transformer - Google Patents
Pressure indicated pressure releasing valve for transformer Download PDFInfo
- Publication number
- CN2636020Y CN2636020Y CN 03271812 CN03271812U CN2636020Y CN 2636020 Y CN2636020 Y CN 2636020Y CN 03271812 CN03271812 CN 03271812 CN 03271812 U CN03271812 U CN 03271812U CN 2636020 Y CN2636020 Y CN 2636020Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- transformer
- elastic telescopic
- plug cover
- telescopic pipe
- 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 - Fee Related
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Abstract
A transformer pressure relief valve is provided, which is characterized in: a lower plug cover (5) is connected through an elastic telescopic tube (1) to the flange (17) of valve base in an air-tight manner; a sensitive resistor (13) is arranged on an upper plug cover (8) and contacts with a guide rod (4); the sensitive resistor (13), a power supply unit (16), and an ammeter (14) are connected serially to form a circuit; the guide rod (4) can move up and down along the axial direction under the internal pressure in the transformer and transmit the signals to the circuit part, so that the signals will be displayed on the sensitive ammeter (14). The utility model can display the pressure in an oil tank accurately, and has high working performance, and is safe and reliable, and is helpful to enable the user to take measures according to the pressure proactively, so as to avoid accidents as far as possible. In addition, for a transformer that is transported with nitrogen filled in it, the utility model can also be used to observe the internal pressure in the oil tank.
Description
Technical field:
The utility model relates to a kind of pressure relief valve, and the displayable pressure relief valve of particularly a kind of pressure belongs to transformer device.
Background technique:
Pressure relief valve is a kind of safety protection valve, in order to replace pressure-relief vent, makees the oil tank anti-explosion protective gear in transformer.When transformer is in operation when breaking down, because coil is overheated, make a part of transformer oil vaporization, the pressure in the oil tank of transformer increases sharply, pressure relief valve releases pressure rapidly at short notice at this moment, protection unlikely distortion of fuel tank or explosion.But present pressure relief valve has only when tank pressure reaches release pressure and just can move, and can not accurately monitor tank pressure in advance, can't get ready in advance.
Summary of the invention:
The purpose of this utility model provides a kind of pressure relief valve that can show tank internal pressure in the transformer running, is convenient to carry out counter-measure in advance, avoid the generation of accident as far as possible according to pressure.For the transformer that fills the nitrogen transportation, also can play the effect of observation tank internal pressure simultaneously.
The utility model is installed on the transformer case, comprises that valve body, valve seat, membranous disc, plug cover, spring, guide rod, seal ring and circuit part grade.It is characterized in that the plug cover is tightly connected by elastic telescopic pipe with the valve seat flange down, elastic telescopic pipe is in pressured state, the amount of deformation of elastic telescopic pipe should satisfy: move upward when the pressure of fuel tank internal makes membranous disc drive guide rod, the following plug under the effect that covers on elastic telescopic pipe also can move upward simultaneously, when the transformer internal pressure reaches predetermined value, elastic telescopic pipe no longer extends, and the gap occurs between membranous disc and the seal ring, opens release of pressure; Top plug cover top has a sense resistance to contact with guide rod, and sense resistance, power supply, ammeter polyphone are formed the loop.In the camber of spring process, guide rod moves always, signal is passed to circuit part and shows.
Description of drawings:
Fig. 1 prior art structural representation
Fig. 2 is a structural representation of the present utility model
Fig. 3 is a display circuit schematic diagram of the present utility model
Among the figure: 1. elastic telescopic pipe, 2. spring, 3. membranous disc, 4. guide rod, 5. plug covers down, 6. terminal box, 7. valve body, 8. top plug cover, 9. electric wire, the 10. fixed contact of sense resistance, 11. sealing gasket, the sensitive contact of 12. sense resistance, 13. sense resistance, 14. sensitive ammeter, 15. warning lights, 16. DC electrical source, 17. the valve seat flange, 18. drain taps, 19. seal rings.
Embodiment: the utility model comprises valve body 7, valve seat flange 7, membranous disc 3, top plug cover 8, fills in cover 5, spring 2, guide rod 4, sealing gasket 11, seal ring 19, warning light 15 etc. down, is installed on the transformer case by valve seat flange 17.Following plug cover 5 is tightly connected by elastic telescopic pipe 1 with valve seat flange 7, and elastic telescopic pipe 1 is in pressured state.When the pressure in the fuel tank increases, membranous disc 3 is moved up.This moment, it can make down plug cover 5 move simultaneously because elastic telescopic pipe 1 is in compressive state, thereby had guaranteed the sealing between time plug cover 5 and the membranous disc 3.Guide rod 4 also moves in the meeting in the process of moving on membranous disc 3.Along with the increase gradually of pressure, spring 2 can be compressed simultaneously, and when tank internal pressure reached cracking pressure, following plug cover 5 had also arrived the extreme higher position in the effect of spring extension tube 1, and membranous disc 3 separates and release pressure with plug cover 5 down.Because the pressure deformation curve of elastic telescopic pipe 1, spring 2 can determine, like this guide rod 4 vertically displacement amount and the function relation of pressure can determine.When guide rod 4 is subjected to displacement, sense resistance 13 on the guide rod 4 just with top plug cover 8 on fixed contact 10 relative displacements take place, as shown in Figure 3, along with the relative displacement of fixed contact 10 with sense resistance 13, corresponding variation will take place in the current in loop of being made up of fixed contact 10, sense resistance 13, sensitive ammeter 14, the displacement size that takes place by guide rod 4 and the resistance value of the function relation of pressure and sense resistance 13 can be determined the relation between pressure and the ammeter show value, and the range after can changing pressure and current value like this marks.Behind the release pressure, because the effect of spring 2, membranous disc 3 comes back to the origin-location.
Simultaneously, can design a warning light 14 and form alarm circuit with power supply 16, sense resistance 13 polyphones.In whole variation in pressure process, because the motion of guide rod 4 in the circuit, fixed contact 10 contacts with sensitive contact 12, and warning light 15 is switched in the circuit, promptly plays the warning effect.
The utility model can accurately show the pressure of fuel tank internal, is convenient to the staff and carries out counter-measure in advance, avoids the generation of accident as far as possible according to the pressure that shows.For the transformer that fills the nitrogen transportation, also can play the effect of observation tank internal pressure simultaneously.
Claims (3)
1, a kind of transformer pressure relief valve comprises valve body (7), valve seat flange (17), membranous disc (3), fills in cover (5), top plug cover (8), spring (2), guide rod (4), sealing gasket (11), seal ring (19), drain tap (18) down, it is characterized in that:
A, following plug cover (5) are tightly connected by elastic telescopic pipe (1) with valve seat flange (17), elastic telescopic pipe (1) is in pressured state, the amount of deformation of elastic telescopic pipe (1) should satisfy: move upward when the pressure of fuel tank internal makes membranous disc (3) drive guide rod (4), following plug cover (5) also can move upward under the effect of elastic telescopic pipe (1) simultaneously, when the transformer internal pressure reaches predetermined value, elastic telescopic pipe (1) no longer extends, the gap occurs between membranous disc (3) and the seal ring (19), open release of pressure;
B. top plug cover (8) top has a sense resistance (13) to contact with guide rod (4), and sense resistance (13), power supply (16), ammeter (14) are composed in series the loop.
2, pressure relief valve as claimed in claim 1 is characterized in that: elastic telescopic pipe (1) is tightly connected by welding manner with valve seat flange (17), following plug cover (5).
3, as claim 1,2 described transformer pressure relief valves, it is characterized in that: have a warning light (14) and power supply (16), sense resistance (13) polyphone to form alarm circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03271812 CN2636020Y (en) | 2003-06-27 | 2003-06-27 | Pressure indicated pressure releasing valve for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03271812 CN2636020Y (en) | 2003-06-27 | 2003-06-27 | Pressure indicated pressure releasing valve for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2636020Y true CN2636020Y (en) | 2004-08-25 |
Family
ID=34300872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03271812 Expired - Fee Related CN2636020Y (en) | 2003-06-27 | 2003-06-27 | Pressure indicated pressure releasing valve for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2636020Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994256A (en) * | 2014-05-12 | 2014-08-20 | 昆山佑翔电子科技有限公司 | Pressure relief valve |
| EP2784790A1 (en) * | 2013-03-28 | 2014-10-01 | ABB Technology AG | Pressure relief device for a power transformer, and related power transformer |
| CN107269897A (en) * | 2017-07-14 | 2017-10-20 | 大唐环境产业集团股份有限公司 | For the automatic safety signal valve for putting ash under the serious dust stratification state of dust collector ash hopper |
| CN108287005A (en) * | 2018-03-16 | 2018-07-17 | 中国矿业大学(北京) | A kind of material-level detection system |
| CN108758036A (en) * | 2018-07-18 | 2018-11-06 | 天威保变(合肥)变压器有限公司 | A kind of outer oil type bellow oil conservator equilibrated valve |
| CN109185515A (en) * | 2018-10-26 | 2019-01-11 | 沈阳明远电气科技有限公司 | pressure relief valve |
| CN110296828A (en) * | 2019-07-25 | 2019-10-01 | 冉正华 | Portable combined pressure relief valve monitor station and detection method |
-
2003
- 2003-06-27 CN CN 03271812 patent/CN2636020Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2784790A1 (en) * | 2013-03-28 | 2014-10-01 | ABB Technology AG | Pressure relief device for a power transformer, and related power transformer |
| CN103994256A (en) * | 2014-05-12 | 2014-08-20 | 昆山佑翔电子科技有限公司 | Pressure relief valve |
| CN107269897A (en) * | 2017-07-14 | 2017-10-20 | 大唐环境产业集团股份有限公司 | For the automatic safety signal valve for putting ash under the serious dust stratification state of dust collector ash hopper |
| CN108287005A (en) * | 2018-03-16 | 2018-07-17 | 中国矿业大学(北京) | A kind of material-level detection system |
| CN108758036A (en) * | 2018-07-18 | 2018-11-06 | 天威保变(合肥)变压器有限公司 | A kind of outer oil type bellow oil conservator equilibrated valve |
| CN109185515A (en) * | 2018-10-26 | 2019-01-11 | 沈阳明远电气科技有限公司 | pressure relief valve |
| CN110296828A (en) * | 2019-07-25 | 2019-10-01 | 冉正华 | Portable combined pressure relief valve monitor station and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TEBIAN ELECTRIC APPARATUS STOCK CO., LTD. Free format text: FORMER NAME OR ADDRESS: XINJIANG TBEA ELECTRICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Tebian Electrician Co., Ltd. Patentee before: Tebian Electrotechnical Co., Ltd., Xinjiang |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |