CN211550655U - Pressure relief valve - Google Patents
Pressure relief valve Download PDFInfo
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- CN211550655U CN211550655U CN201922467141.5U CN201922467141U CN211550655U CN 211550655 U CN211550655 U CN 211550655U CN 201922467141 U CN201922467141 U CN 201922467141U CN 211550655 U CN211550655 U CN 211550655U
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- valve cover
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- marking rod
- pressure relief
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Abstract
The utility model relates to a transformer technical field particularly, is a pressure relief valve. Comprises a valve seat, a valve cover, a spring and a die disc; the valve cover is arranged on the valve seat; the top of the valve cover is provided with a valve cover; a die disc is arranged on the opening at the top of the valve seat; a spring is arranged between the die disc and the valve cover; a through hole is formed in the center of the valve cover, the marking rod penetrates through the through hole, the marking rod is attached to the wall of the through hole, and the bottom of the marking rod abuts against the die disc; the spring is sleeved on the marking rod; the marking rod moves upwards along with the die disc to trigger a travel switch fixed on the valve cover; and an oil guide neck is arranged on the side wall of the valve cover. The valve cover changes the appearance structure, reduces the processing difficulty and improves the production efficiency, and the valve cover can rotate 360 degrees after the valve seat is installed by utilizing the installation of the inner hexagonal jackscrew so as to select the direction of the valve cover; the installation of field workers is convenient; the external enhancement switch's of travel switch performance, dampproofing, anticorrosive etc. and then improve the protection level of valve, more are suitable for more abominable environmental area and use.
Description
Technical Field
The utility model relates to a transformer technical field particularly, is a pressure release valve for oil-immersed power transformer.
Background
The 50 series pressure relief valves are one of indispensable small components in the transformer, when the oil immersed transformer breaks down in operation, a part of transformer oil is vaporized due to overheating of a coil, so that the pressure in an oil tank of the transformer is rapidly increased, and when the pressure in a box body of the transformer reaches the opening pressure of the pressure relief valves, the pressure relief valves can be rapidly opened within 2ms to release the pressure, so that the oil tank is protected from deformation or burst; meanwhile, a pressure relief opening signal of the pressure relief valve is transmitted out for an operator to take corresponding measures, so that major accidents are avoided.
As described above, the switch of the 50-series pressure relief valve in the prior art is installed inside the valve body, and because the valve body is not sealed tightly, moisture easily enters the valve body, when the switch fails due to the influence of moisture, the switch cannot normally operate, i.e., the switch cannot transmit an opening signal in time, and an operator cannot receive information in time, thereby causing certain difficulty for the operator to handle the failure. In addition, because the existing 50-series pressure release valve adopts a directional oil injection mode, the oil injection direction is fixed during installation, the switch wiring terminal is fixed, the valve cover cannot rotate, if the wiring installation space is insufficient, only one installation direction can be changed, the purpose of total installation is achieved, and certain difficulty is brought to installation operation.
Disclosure of Invention
The utility model discloses a to the technological improvement of current pressure release valve, its purpose just provides the pressure release valve who satisfies high protection level, simple to operate, brand-new appearance.
The utility model adopts the technical proposal that:
the pressure release valve comprises a valve seat, a valve cover, a spring and a die disc; the valve cover is arranged on the valve seat; the top of the valve cover is provided with a valve cover; a die disc is arranged on the opening at the top of the valve seat;
a spring is arranged between the die disc and the valve cover;
a through hole is formed in the center of the valve cover, the marking rod penetrates through the through hole, the marking rod is attached to the wall of the through hole, and the bottom of the marking rod abuts against the die disc; the spring is sleeved on the marking rod;
the marking rod moves upwards along with the die disc to trigger a travel switch fixed on the valve cover;
and an oil guide neck is arranged on the side wall of the valve cover.
Preferably, the travel switch is fixed on the valve cover through an inner hexagonal socket head cap screw, and a cable waterproof connector is arranged at one end, far away from the marking rod, of the travel switch.
Preferably, the top of the spring is provided with an adjusting ring.
Preferably, the valve seat is circumferentially provided with a mounting hole; and a bottom ring is arranged on the lower surface of the valve seat.
Preferably, an oil guide neck rubber ring is arranged on the oil guide neck.
Preferably, the lower end of the valve cover is fixed on the valve seat through a first inner hexagonal jackscrew; the valve bonnet is fixed on the valve cover through a second inner hexagonal jackscrew.
Preferably, the part of the marking rod extending out of the valve cover is fixed through a G-shaped locking plate, and the G-shaped locking plate is fixed on the valve cover through a cross-recessed pan head screw.
Preferably, a rain cover is arranged at the upper end of the valve cover.
Preferably, the lower end of the marking rod is sleeved with a shaft check ring.
Preferably, the die disc and the valve seat are sealed through an upper ring; the valve cover and the valve seat are sealed through a middle ring.
The utility model has the advantages that: the valve cover changes the appearance structure, reduces the processing difficulty, improves the production efficiency, utilizes the installation of the inner hexagonal jackscrew, can select the valve cover direction after installing the valve seat, is used for changing the opening and closing direction, and can rotate in the direction of 360 degrees; the installation by field workers is more convenient; the external enhancement switch's of travel switch performance, dampproofing, anticorrosive etc. and then improve the protection level of valve, more are suitable for more abominable environmental area and use.
Description of the drawings:
FIG. 1 is a schematic structural view of the pressure relief valve of the present invention;
FIG. 2 is a top view of the pressure relief valve of the present invention;
FIG. 3 is a schematic structural view of a pressure relief valve with a rain cover;
wherein: 1-bottom ring, 2-valve seat, 3-oil guide neck, 3-inner hexagonal jackscrew, 4-oil guide neck rubber ring, 5-valve cover, 6-second inner hexagonal jackscrew, 7-valve cover, 8-marking rod, 9-G type locking plate, 10-spring washer, 11-inner hexagonal socket head screw, 12-travel switch, 13-cable waterproof joint, 14-adjusting ring, 15-spring, 16-shaft retainer ring, 17-die disc, 18-upper ring, 19-first inner hexagonal jackscrew, 20-middle ring, 21-cross groove disc head screw, 22-rain cover and 23-mounting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Reference is made to fig. 1-3;
the pressure relief valve comprises a valve seat 2, a valve cover 7, a spring 15 and a die plate 17; the valve cover 7 is arranged on the valve seat 2; the top of the valve cover 7 is provided with a valve cover 5; a die plate 17 is arranged on the opening at the top of the valve seat 2;
a spring 15 is arranged between the die disc 17 and the valve cover 5;
a through hole is formed in the center of the valve cover 5, the marking rod 8 penetrates through the through hole, the marking rod 8 is attached to the wall of the through hole, and the bottom of the marking rod 8 abuts against the die disc 17; the spring 15 is sleeved on the marking rod 8; the marking rod 8 moves upwards along with the mould plate 17 to trigger a travel switch 12 fixed on the valve cover 5;
the side wall of the valve cover 7 is provided with an oil guide neck 3.
Furthermore, a travel switch 12 is fixed on the valve bonnet 5 through an inner hexagonal socket head cap screw 11, a spring washer 10 is padded under the inner hexagonal socket head cap screw 11, and a cable waterproof joint 13 is arranged at the end part of the travel switch 12.
Further, an adjusting ring 14 is arranged on the top of the spring 15 for adjusting the pressure required for triggering the switch.
Further, the valve seat 2 is circumferentially provided with a mounting hole 23; the lower surface of the valve seat 2 is provided with a bottom ring 1 for installing the valve seat 2 on a reserved installation flange on the top surface of the transformer oil tank and ensuring the sealing property.
Furthermore, an oil guide neck rubber ring 4 is arranged on the oil guide neck 3, so that the sealing performance during connection is ensured.
Further, the lower end of the valve cover 7 is fixed on the valve seat 2 through two first inner hexagonal jackscrews 19; the valve cover 5 is fixed on the valve cover 7 through three second inner hexagonal jackscrews 6; during the installation, the direction can be adjusted to valve gap 7 option, removes the trouble that the valve body need be dismantled in the change switch direction from, improves work efficiency.
Further, the part of the marking rod 8 extending out of the valve housing 5 is fixed by a G-shaped locking plate 9, and the G-shaped locking plate 9 is fixed on the valve housing 5 by two cross-recessed pan head screws 21.
Furthermore, the upper end of the valve cover 5 is provided with a rain cover 22, and the travel switch 12 is covered by the rain cover 22 to prevent rain.
Further, a shaft retainer ring 16 is sleeved at the lower end of the marking rod 8.
Further, the mould disc 17 and the valve seat 2 are sealed through an upper ring 18; the valve cover 7 and the valve seat 2 are sealed by a middle ring 20, and the sealing performance of each component is ensured by a sealing ring.
The utility model discloses a to the technological improvement of current pressure release valve, its functional structure is unanimous with current YSF6-50 structure, except that valve gap 7, aluminium system mark pole 8, travel switch 12, other spare parts such as disk seat 2, valve bonnet 5 all can adopt prior art. After the marking rod 8 moves upwards, the travel switch 12 is triggered to transmit an alarm signal; the travel switch 12 is external, so that the protection level is increased, and the problem that the built-in switch in the prior art is easy to be affected by moisture in use performance is solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The pressure release valve comprises a valve seat (2), a valve cover (5), a spring (15) and a die disc (17); the method is characterized in that: the valve cover (5) is arranged on the valve seat (2); a valve cover (7) is arranged on the top of the valve cover (5); a die disc (17) is arranged on the opening at the top of the valve seat (2);
a spring (15) is arranged between the die disc (17) and the valve cover (7);
a through hole is formed in the center of the valve cover (7), the marking rod (8) penetrates through the through hole, the marking rod (8) is attached to the wall of the through hole, and the bottom of the marking rod (8) abuts against the die disc (17); the spring (15) is sleeved on the marking rod (8);
the marking rod (8) moves upwards along with the die disc (17) to trigger a stroke switch (12) fixed on the valve cover (7);
and an oil guide neck (3) is arranged on the side wall of the valve cover (5).
2. The pressure relief valve as set forth in claim 1, wherein: the travel switch (12) is fixed on the valve cover (7) through an inner hexagonal socket head cap screw (11), and one end, far away from the marking rod (8), of the travel switch (12) is provided with a cable waterproof connector (13).
3. The pressure relief valve as set forth in claim 1, wherein: the top of the spring (15) is provided with an adjusting ring (14).
4. The pressure relief valve as set forth in claim 1, wherein: the valve seat (2) is circumferentially provided with mounting holes; and the lower surface of the valve seat (2) is provided with a bottom ring (1).
5. The pressure relief valve as set forth in claim 1, wherein: and an oil guide neck rubber ring (4) is arranged on the oil guide neck (3).
6. The pressure relief valve as set forth in claim 1, wherein: the lower end of the valve cover (5) is fixed on the valve seat (2) through a first inner hexagonal jackscrew (19); the valve cover (7) is fixed on the valve cover (5) through a second inner hexagonal jackscrew (6).
7. The pressure relief valve as set forth in claim 1, wherein: the part of the marking rod (8) extending out of the valve cover (7) is fixed through a G-shaped locking plate (9), and the G-shaped locking plate (9) is fixed on the valve cover (7) through a cross-shaped groove pan head screw (21).
8. The pressure relief valve as set forth in claim 1, wherein: the upper end of the valve cover (7) is provided with a rainproof cover (22).
9. The pressure relief valve as set forth in claim 1, wherein: the lower end of the marking rod (8) is sleeved with a shaft check ring (16).
10. The pressure relief valve as set forth in claim 1, wherein: the die disc (17) and the valve seat (2) are sealed by an upper ring (18); the valve cover (5) and the valve seat (2) are sealed through a middle ring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467141.5U CN211550655U (en) | 2019-12-31 | 2019-12-31 | Pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467141.5U CN211550655U (en) | 2019-12-31 | 2019-12-31 | Pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211550655U true CN211550655U (en) | 2020-09-22 |
Family
ID=72512334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922467141.5U Active CN211550655U (en) | 2019-12-31 | 2019-12-31 | Pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211550655U (en) |
-
2019
- 2019-12-31 CN CN201922467141.5U patent/CN211550655U/en active Active
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