CN104728480B - Pressure relief device of transformer - Google Patents
Pressure relief device of transformer Download PDFInfo
- Publication number
- CN104728480B CN104728480B CN201310724492.4A CN201310724492A CN104728480B CN 104728480 B CN104728480 B CN 104728480B CN 201310724492 A CN201310724492 A CN 201310724492A CN 104728480 B CN104728480 B CN 104728480B
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- Prior art keywords
- plate
- movable part
- pressure relief
- pressure
- fixed
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- 230000002441 reversible effect Effects 0.000 claims abstract description 3
- 230000007306 turnover Effects 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a pressure relief device of a transformer. This pressure relief device of transformer includes: a fixing part (1), wherein the fixing part (1) is provided with a pressure relief hole (11); a movable part (2), wherein the movable part (2) is arranged on the fixed part (1) in a reversible manner so as to open and close the pressure relief hole (11); and the pressure limiting structure (3), the pressure limiting structure (3) has a first state for limiting the overturn of the movable part (2) and a second state for releasing the limitation on the movable part (2) when the pressure borne by the movable part (2) is greater than or equal to a preset value. By applying the technical scheme of the invention, the pressure can be released when the pressure of the transformer reaches the preset value, so that the safety of the transformer is protected.
Description
Technical Field
The invention relates to the technical field of pressure protection devices, in particular to a pressure relief device of a transformer.
Background
The capacity of the marine transformer is generally more than 1500KVA, and when the water-cooling system of the marine transformer breaks down, heat generated by the marine transformer during working cannot be removed, so that the internal pressure of a unit is continuously increased, and the structural member of the unit is seriously deformed or even explodes.
Disclosure of Invention
The invention aims to provide a pressure relief device of a transformer, which can release pressure when the pressure of the transformer reaches a preset value, so that the safety of the transformer is protected.
In order to achieve the above object, according to one aspect of the present invention, there is provided a voltage relief device of a transformer, including: the fixing part is provided with a pressure relief hole; the movable part is arranged on the fixed part in a turnover manner to open and close the pressure relief hole; and the pressure limiting structure is provided with a first state for limiting the turnover of the movable part and a second state for releasing the limitation on the movable part when the pressure borne by the movable part is greater than or equal to a preset value.
Further, the pressure limiting structure comprises a plastic part, the strength of the plastic part is smaller than or equal to the pressure of the preset value to the movable part, and the plastic part is fixedly connected with the fixed part and the movable part in the first state.
Further, the plastic part is a plastic screw, and in the first state, the plastic screw is fixedly arranged on the fixed part and the movable part in a penetrating mode.
Further, the movable portion includes: the connecting plate is fixed on the fixing part; the turnover plate is connected with the connecting plate and can be arranged on the fixing part in a turnover manner around the connecting part; in the first state, the pressure limiting structure is arranged on the turnover plate and the fixing part.
Further, the flipping panel comprises: the first side of the first plate body is connected with the connecting plate, and the second side of the first plate body, which is opposite to the first side, is provided with a first mounting part for arranging a pressure limiting structure; the two second plate bodies are respectively connected to two sides of the first plate body, which are adjacent to the first side; the third plate body is connected to the second side of the first plate body; the first plate body, the two second plate bodies and the third plate body are surrounded to form an accommodating space for accommodating the fixing part.
Further, the connection part of the movable part and the fixed part is provided with a plurality of weak parts which are arranged at intervals along the turning axis direction of the movable part.
Further, the plurality of weak portions are all through holes.
Further, the fixing portion includes: the body is provided with a pressure relief hole; the mounting plate is fixed on the body and is connected with a movable part; and the fixing plate is fixed on the body and is provided with a second mounting part for mounting the pressure limiting structure.
Further, the mounting plate is connected with the movable part through bolts, and a containing groove for containing the bolts is formed between the mounting plate and the body.
Further, the pressure relief device of transformer still includes the spacing portion that is used for restricting the rotation angle of movable part, and spacing portion includes: the first side plate is fixed on the fixing part; and the second side plate is fixed on the first side plate and extends towards the direction close to the movable part in an inclined manner.
By applying the technical scheme of the invention, the pressure relief device of the transformer comprises a fixed part, a movable part and a pressure limiting structure, wherein the fixed part is provided with a pressure relief hole, the movable part is arranged on the fixed part in a turnover manner and is used for opening or closing the pressure relief hole, the pressure limiting structure has two states, one state is that the movable part is limited to turn over, and the other state is that the movable part is not limited when the pressure value applied to the movable part reaches a preset value, so that the movable part can turn over, the pressure relief hole is opened, and the overlarge pressure is effectively released, thereby protecting the safety of the transformer. The pressure relief device of the transformer is a mechanical pressure relief protection device, has high reliability, and can effectively release pressure when a water cooling or air cooling system of the transformer breaks down, thereby achieving the purpose of protecting the unit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows an exploded schematic view of a pressure relief device of a transformer according to an embodiment of the invention;
fig. 2 shows an enlargement at a according to fig. 1; and
fig. 3 shows a schematic diagram of an assembled and voltage limiting structure of a voltage relief device of a transformer according to an embodiment of the invention in a first state.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1 to 3, according to an embodiment of the present invention, a pressure relief device for a transformer is provided, including a fixed portion 1, a movable portion 2, and a pressure limiting structure 3, wherein the fixed portion 1 is used for being fixed on the transformer, and the fixed portion 1 has a pressure relief hole 11. The movable part 2 is arranged on the fixed part 1 in a reversible way and plays a role of closing or opening the pressure relief hole 11. The pressure limiting structure 3 has two states, when the pressure relief is not needed, the pressure limiting structure 3 is in the first state to limit the turning action of the movable part 2, so that the movable part 2 and the fixed part 1 are relatively fixed, when the working heat of the transformer increases, the pressure increases and cannot be released, the pressure given to the movable part 2 by the gradually increased pressure also gradually increases, when the pressure borne by the movable part 2 is greater than or equal to a preset value, the pressure limiting structure 3 is in the second state to relieve the limitation on the movable part 2, so that the movable part 2 can be turned over and the pressure relief hole 11 is opened, the redundant pressure can be smoothly removed, and the safety of the transformer is protected. Because the mechanical pressure relief protection device is adopted in the embodiment, the reliability is higher, and the pressure can be effectively released when a water cooling or air cooling system of the transformer breaks down, so that the purpose of protecting the unit is achieved.
Preferably, the pressure limiting structure 3 is a plastic piece, and in the first state, the plastic piece is fixedly connected to the fixed portion 1 and the movable portion 2 to limit the turnover of the movable portion 2. The intensity requirement of the plastic part is less than or equal to the pressure of the preset value to the movable part 2, so that when the pressure borne by the movable part 2 is greater than or equal to the preset value, the plastic part can be disconnected, the limitation to the movable part 2 is removed, and the movable part 2 can be smoothly turned over to open the pressure relief hole 11 for pressure relief. The plastic part has lower manufacturing cost, can reduce the use cost and is easy to process.
Further preferably, the plastic member is a plastic screw, and in the first state, the plastic screw is fixedly inserted into the fixed portion 1 and the movable portion 2 to limit the turning motion of the movable portion 2.
Of course, the plastic part may be replaced by other structures, such as a plastic buckle, which is clamped on the fixed part 1 and the movable part 2 to limit the movable part 2 from turning over in the first state; when the pressure borne by the movable part 2 is greater than or equal to the preset value, the plastic buckle is disconnected, the movable part 2 is not limited any more, and the movable part 2 can be turned over to open the pressure relief hole 11 for pressure relief.
Or, the purpose of limiting the turning of the movable part 2 can be achieved by using the friction performance of the plastic part, namely, in the first state, the plastic part is arranged on the fixed part 1 and the movable part 2, and the pressure applied to the movable part 2 is counteracted by the friction force between the plastic part and the movable part 2, so that the turning of the movable part 2 is limited; when the frictional force between the plastic piece and the movable part 2 is smaller than the pressure applied to the movable part 2, the plastic piece does not limit the turnover of the movable part 2 any more, and the movable part 2 opens the pressure relief hole 11 to relieve the pressure. The structure requires that the friction force between the plastic part and the movable part 2 is smaller than the preset value, so that the pressure relief can be carried out in time when the pressure on the movable part 2 reaches the preset value, and the safety of the transformer is protected.
Referring to fig. 1 in combination, preferably, the movable portion 2 includes a connecting plate 21 and a turnover plate 22, wherein the connecting plate 21 is fixed on the fixing portion 1, the turnover plate 22 is connected to the connecting plate 21 and can be turned over around the connection between the connecting plate and the connecting plate 21, and the turnover plate 22 is disposed corresponding to the pressure relief hole 11 and used for opening or closing the pressure relief hole 11. In the first state, the pressure limiting structure 3 is disposed on the turnover plate 22 and the fixing portion 1.
Further preferably, the turning plate 22 includes a first plate 221, two second plate 222 and a third plate 223, wherein the first plate 221 is disposed above the pressure relief hole 11, a first side of the first plate 221 is connected to the connecting plate 21, the first plate 221 can be turned around a joint, a second side of the first plate 221 opposite to the first side has a first mounting portion 224 for mounting the pressure limiting structure 3, and the first mounting portion 224 is a first screw hole for passing a plastic screw when the pressure limiting structure 3 is a plastic screw. The two second plate bodies 222 are respectively and vertically connected to two sides of the first plate body 221 adjacent to the first side, the two second plate bodies 222 are not connected to the connecting plate 21, and the two second plate bodies 222 can be turned over along with the first plate body 221. The third plate body 223 is vertically connected to the second side of the first plate body 221, and the third plate body 223 is not connected to both of the second plate bodies 222. A box-shaped structure with an opening on one side is formed by enclosing the first plate 221, the two second plates 222 and the third plate 223, the box-shaped structure has an accommodating space, and the fixing portion 1 is integrally embedded in the accommodating space. The structure can well seal the pressure relief hole 11, and when pressure relief is not needed, the movable part 2 covers the fixed part 1, so that pressure leakage is effectively prevented.
Referring to fig. 2 in combination, preferably, a plurality of weak portions 23 are provided at the connection position, and the plurality of weak portions 23 are arranged at intervals along the turning axis direction of the movable portion 2, so that the strength of the connection position of the movable portion 2 and the fixed portion 1 can be further reduced, and the movable portion 2 can be smoothly turned around the connection position.
Further preferably, each of the plurality of weak portions 23 is a through hole.
Of course, the plurality of weak portions 23 may be non-through grooves, and may also serve to reduce the connection strength at the connection between the movable portion 2 and the fixed portion 1.
Referring to fig. 1 and fig. 3 in combination, preferably, the fixing portion 1 includes a body 13, a mounting plate 14 and a fixing plate 15, wherein the body 13 is a box-shaped structure corresponding to the accommodating space of the movable portion 2, the pressure relief hole 11 is disposed on a bottom plate of the body 13, and when the movable portion 2 is covered on the body 13, a relatively closed cavity is formed between the movable portion 2 and the body 13. The mounting plate 14 is fixed to the body 13 and is fixedly connected to the connecting plate 21 of the movable portion 2. The fixing plate 15 is fixed on the body 13 and is disposed opposite to the mounting plate 14, and the fixing plate 15 has a second mounting portion 151 for mounting the pressure limiting structure 3. In the case where the pressure limiting structure 3 is a plastic screw, the second mounting portion 151 is a second screw hole for passing the plastic screw therethrough. The second mounting portion 151 is disposed on the fixing plate 15 to prevent damage to the body 13, and only the fixing plate 15 may be replaced if the fixing plate 15 is damaged, without replacing the fixing portion 1 as a whole.
Further preferably, the mounting plate 14 and the connecting plate 21 are fixedly connected through bolts 5, so that the mounting and dismounting are facilitated. In order to prevent the bolt 5 from damaging the body 13, it is preferable that a receiving groove 12 is formed between the mounting plate 14 and the body 13, and the bolt 5 sequentially passes through the connecting plate 21 and the mounting plate 14 and then extends into the receiving groove 12, so that the nut can be conveniently sleeved.
The mounting plate 14 has a specific structure that the mounting plate 14 comprises two side plates which are vertically and fixedly connected, wherein one side plate is fixedly connected with the body 13, and the other side plate is used for penetrating the bolt 5 and fixedly connected with the connecting plate 21. The two side plates and the connecting plate 21 enclose a receiving groove 12.
When the working heat of the transformer causes too large pressure or the strength of the joint between the movable part 2 and the fixed part 1 is too small, the turnover plate 22 may be turned over by too large angle due to large impact, or even the turnover plate 22 may be disconnected from the joint. In order to avoid this phenomenon, it is preferable that the fixing portion 1 is provided with a stopper portion 4, and the stopper portion 4 is used for limiting the turning angle of the turning plate 22.
Specifically, the limiting portion 4 includes a first side plate 41 and a second side plate 42, the first side plate 41 is fixed on the mounting plate 14, the height of the first side plate 41 is higher than that of the fixing portion 1, the second side plate 42 is fixed at the top end of the first side plate 41 and extends in an inclined manner toward the direction close to the movable portion 2, an included angle region between the first side plate 41 and the second side plate 42 faces the movable portion 2, and the movable portion 2 contacts the second side plate 42 during the overturning process, so as to limit the overturning angle of the movable portion 2.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the mechanical pressure relief device can effectively release pressure generated by heat in the working process of the transformer, has a simple structure and a reliable pressure relief effect, and ensures safe working of the transformer.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A pressure relief device of a transformer, comprising:
a fixing portion (1), the fixing portion (1) having a plurality of pressure relief holes (11);
a movable part (2), wherein the movable part (2) is arranged on the fixed part (1) in a reversible manner so as to open and close the plurality of pressure relief holes (11); and
the pressure limiting structure (3) is provided with a first state for limiting the turnover of the movable part (2) and a second state for releasing the limitation on the movable part (2) when the pressure on the movable part (2) is greater than or equal to a preset value;
the pressure relief device of transformer still includes and is used for restricting spacing portion (4) of the rotation angle of movable part (2), spacing portion (4) include:
a first side plate (41), the first side plate (41) being fixed to the fixing portion (1); and
a second side plate (42), wherein the second side plate (42) is fixed on the first side plate (41) and extends towards the direction close to the movable part (2) in an inclined way;
the joint of the movable part (2) and the fixed part (1) is provided with a plurality of weak parts (23), the weak parts (23) are arranged at intervals along the direction of the turning axis of the movable part (2), and the weak parts (23) are through holes.
2. The pressure relief device of a transformer according to claim 1, wherein said pressure limiting structure (3) comprises a plastic piece having a strength less than or equal to said predetermined value to said movable part (2), said plastic piece being fixedly connected to said fixed part (1) and said movable part (2) in said first state.
3. The pressure relief device of a transformer according to claim 2, wherein said plastic member is a plastic screw, and said plastic screw is fixedly disposed through said fixed portion (1) and said movable portion (2) in said first state.
4. The pressure relief device of a transformer according to claim 1, characterized in that said movable part (2) comprises:
the connecting plate (21), the said connecting plate (21) is fixed on said fixed portion (1); and
the turnover plate (22), the turnover plate (22) is connected with the connecting plate (21) and can be arranged on the fixing part (1) in a turnover mode around the connection part;
in the first state, the pressure limiting structure (3) is arranged on the turnover plate (22) and the fixing part (1).
5. The pressure relief device of a transformer according to claim 4, characterized in that said flip plate (22) comprises:
a first plate body (221), wherein a first side of the first plate body (221) is connected with the connecting plate (21), and a second side, opposite to the first side, of the first plate body (221) is provided with a first mounting part (224) for arranging the pressure limiting structure (3);
two second plate bodies (222), wherein the two second plate bodies (222) are respectively connected to two sides of the first plate body (221), which are adjacent to the first side; and
a third plate (223), the third plate (223) being connected to the second side of the first plate (221);
the first plate body (221), the two second plate bodies (222) and the third plate body (223) are surrounded to form an accommodating space for accommodating the fixing part (1).
6. The pressure relief device of a transformer according to claim 1, characterized in that said fixing portion (1) comprises:
a body (13), said body (13) having said pressure relief hole (11);
the mounting plate (14), the said mounting plate (14) is fixed on said body (13), connect with the said activity department (2) on the said mounting plate (14); and
a fixing plate (15), the fixing plate (15) being fixed on the body (13), the fixing plate (15) having a second mounting portion (151) for mounting the pressure limiting structure (3).
7. The pressure relief device of a transformer according to claim 6, characterized in that said mounting plate (14) is connected to said movable part (2) by means of a bolt (5), said mounting plate (14) having a receiving slot (12) between said body (13) for receiving said bolt (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724492.4A CN104728480B (en) | 2013-12-24 | 2013-12-24 | Pressure relief device of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724492.4A CN104728480B (en) | 2013-12-24 | 2013-12-24 | Pressure relief device of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104728480A CN104728480A (en) | 2015-06-24 |
| CN104728480B true CN104728480B (en) | 2020-06-16 |
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ID=53452668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310724492.4A Expired - Fee Related CN104728480B (en) | 2013-12-24 | 2013-12-24 | Pressure relief device of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104728480B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4258497A1 (en) * | 2022-04-06 | 2023-10-11 | Abb Schweiz Ag | Enclosure for electrical equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2178182A2 (en) * | 2008-10-16 | 2010-04-21 | Kabushiki Kaisha Toshiba | Device for pressure-release of gas-insulated apparatus |
| CN102136688A (en) * | 2010-01-22 | 2011-07-27 | 华仪电气股份有限公司 | Switch cabinet pressure relief device capable of ventilating and preventing dust |
| CN202651678U (en) * | 2012-05-24 | 2013-01-02 | 河南森源电气股份有限公司 | Pressure release apparatus for indoor switch cabinet |
| CN202797651U (en) * | 2012-09-26 | 2013-03-13 | 河北电力装备有限公司 | Pressure relief device with tearing openings |
| CN202872240U (en) * | 2012-09-29 | 2013-04-10 | 中国西电电气股份有限公司 | Adjustable rotating cover plate-based pressure releasing structure for high-voltage switchgear |
| CN203627952U (en) * | 2013-12-24 | 2014-06-04 | 珠海格力电器股份有限公司 | Pressure relief device of transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203135245U (en) * | 2013-03-14 | 2013-08-14 | 宝光集团有限公司 | Novel switch cabinet pressure-releasing device |
-
2013
- 2013-12-24 CN CN201310724492.4A patent/CN104728480B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2178182A2 (en) * | 2008-10-16 | 2010-04-21 | Kabushiki Kaisha Toshiba | Device for pressure-release of gas-insulated apparatus |
| CN102136688A (en) * | 2010-01-22 | 2011-07-27 | 华仪电气股份有限公司 | Switch cabinet pressure relief device capable of ventilating and preventing dust |
| CN202651678U (en) * | 2012-05-24 | 2013-01-02 | 河南森源电气股份有限公司 | Pressure release apparatus for indoor switch cabinet |
| CN202797651U (en) * | 2012-09-26 | 2013-03-13 | 河北电力装备有限公司 | Pressure relief device with tearing openings |
| CN202872240U (en) * | 2012-09-29 | 2013-04-10 | 中国西电电气股份有限公司 | Adjustable rotating cover plate-based pressure releasing structure for high-voltage switchgear |
| CN203627952U (en) * | 2013-12-24 | 2014-06-04 | 珠海格力电器股份有限公司 | Pressure relief device of transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104728480A (en) | 2015-06-24 |
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Granted publication date: 20200616 |