CN104728480A - Pressure relief device of transformer - Google Patents
Pressure relief device of transformer Download PDFInfo
- Publication number
- CN104728480A CN104728480A CN201310724492.4A CN201310724492A CN104728480A CN 104728480 A CN104728480 A CN 104728480A CN 201310724492 A CN201310724492 A CN 201310724492A CN 104728480 A CN104728480 A CN 104728480A
- Authority
- CN
- China
- Prior art keywords
- plate
- active part
- pressure
- fixing part
- relief device
- 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.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 claims description 34
- 239000004033 plastic Substances 0.000 claims description 34
- 230000007306 turnover Effects 0.000 claims description 16
- 230000002441 reversible effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
Landscapes
- 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 present invention relates to pressure protective device technical field, in particular to a kind of pressure relief device of transformer.
Background technique
The capacity of marine transformer is generally more than 1500KVA, when the water-cooled cooling system malfunctions of marine transformer, the heat that marine transformer work produces cannot be driven away, and unit internal pressure can be caused constantly to raise, cause set structure part gross distortion even to produce blast.
Summary of the invention
The present invention aims to provide a kind of pressure relief device of transformer, pressure can be discharged when transformer pressure reaches predetermined value, protection transformer safety.
To achieve these goals, according to an aspect of the present invention, provide a kind of pressure relief device of transformer, comprising: fixing part, fixing part has relief hole; Active part, active part is arranged on fixing part with opening and closing relief hole turningly; And pressure limiting structure, pressure limiting structure has the first state of restraint portion upset, and removes the second state to the restriction of active part when active part pressure is more than or equal to predetermined value.
Further, pressure limiting structure comprises working of plastics, and the intensity of working of plastics is less than or equal to the pressure of predetermined value to active part, and under the first state, working of plastics is fixedly connected with active part with fixing part.
Further, working of plastics is plastic screw, and under the first state, plastic screw is fixedly located on fixing part and active part.
Further, active part comprises: connecting plate, and connecting plate is fixed on fixing part; And turnover board, turnover board is connected with connecting plate, and is arranged on fixing part around joint turningly; Under first state, pressure limiting structure is arranged on turnover board and fixing part.
Further, turnover board comprises: the first plate body, and the first side of the first plate body is connected with connecting plate, and second side relative with the first side of the first plate body has the first assembly department for arranging pressure limiting structure; Two the second plate bodys, two the second plate bodys are connected to the both sides adjacent with the first side of the first plate body; And the 3rd plate body, the 3rd plate body is connected to the second side of the first plate body; First plate body, two the second plate bodys and the 3rd plate body enclose the holding space formed for holding fixing part.
Further, the joint of active part and fixing part has multiple weak point, and multiple weak point is arranged along the upset axial direction interval of active part.
Further, multiple weak point is through hole.
Further, fixing part comprises: body, and body has relief hole; Mounting plate, mounting plate is fixed on body, and mounting plate is connected with active part; And fixed plate, fixed plate is fixed on body, and fixed plate has the second assembly department for installing pressure limiting structure.
Further, mounting plate and active part are bolted, and have the receiving groove for holding bolt between mounting plate and body.
Further, the pressure relief device of transformer also comprises the limited part of the flip angle for restraint portion, and limited part comprises: the first side plate, and the first side plate is fixed on fixing part; And second side plate, the second side plate to be fixed on the first side plate and to tilt to extend near the direction of active part.
Apply technological scheme of the present invention; the pressure relief device of transformer comprises fixing part, active part and pressure limiting structure; wherein fixing part has relief hole; active part is arranged on fixing part turningly; be used to open or close relief hole; pressure limiting structure has two states; one is that restraint portion overturns; a kind of is the restriction removed when the force value that active part is subject to arrives predetermined value active part; active part can be overturn; thus open relief hole, excessive pressure is effectively discharged, thus the safety of protection transformer.The pressure relief device of transformer is mechanical type decompression protection device, and reliability is higher, can effective release pressure when water-cooled or the wind cooling temperature lowering system malfunctions of transformer self, reaches the object of protection unit.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the decomposing schematic representation of the pressure relief device of transformer according to an embodiment of the invention;
Fig. 2 shows the A place enlarged view according to Fig. 1; And
After Fig. 3 shows the assembling of the pressure relief device of transformer according to an embodiment of the invention and pressure limiting structure is positioned at the schematic diagram of the first state.
Embodiment
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 1 to Figure 3, according to embodiments of the invention, provide a kind of pressure relief device of transformer, comprise fixing part 1, active part 2 and pressure limiting structure 3, wherein fixing part 1 is for fixing on the transformer, and fixing part 1 has relief hole 11.Active part 2 is arranged on fixing part 1 turningly, plays the effect of closing or opening relief hole 11.Pressure limiting structure 3 has two states, when not needing pressure release, pressure limiting structure 3 is in the first state with the rotary movement in restraint portion 2, make active part 2 relative with fixing part 1 fixing, when transformer work calories increases, when causing pressure increase and cannot discharge, the pressure that the pressure increased gradually gives active part 2 also increases gradually, when active part 2 pressure is more than or equal to predetermined value, pressure limiting structure 3 is in the second state to remove the restriction to active part 2, active part 2 can be overturn and open relief hole 11, unnecessary pressure is laid down smoothly, thus the safety of protection transformer.Owing to adopting mechanical type decompression protection device in the present embodiment, reliability is higher, can effective release pressure when water-cooled or the wind cooling temperature lowering system malfunctions of transformer self, reaches the object of protection unit.
Preferably, pressure limiting structure 3 adopts working of plastics, and in a first state, working of plastics is fixedly connected on fixing part 1 with on active part 2, with the upset in restraint portion 2.The requirement of strength of working of plastics is less than or equal to the pressure of aforesaid predetermined value to active part 2, like this, when active part 2 pressure is more than or equal to predetermined value, working of plastics can disconnect thus remove the restriction to active part 2, and active part 2 can overturn to open relief hole 11 pressure release smoothly.Working of plastics cost is lower, can reduce user cost and be easy to processing.
Further preferably, working of plastics is plastic screw, and in a first state, plastic screw is located in fixing part 1 regularly with on active part 2, the rotary movement in restraint portion 2.
Certainly, working of plastics also can replace with other structures, and as plastic buckle, in a first state, be connected to by plastic buckle on fixing part 1 and active part 2, restraint portion 2 overturns; When active part 2 pressure is more than or equal to predetermined value, plastic buckle disconnects, and no longer restraint portion 2, active part 2 can overturn to open relief hole 11 and carry out pressure release.
Or, also the frictional behaviour of working of plastics can be utilized to obtain the object of restraint portion 2 upset, and namely under the first state, working of plastics is arranged on fixing part 1 and active part 2, rely on the frictional force between working of plastics and active part 2 to offset active part 2 pressure, restraint portion 2 overturns; When frictional force between working of plastics and active part 2 is less than active part 2 pressure, working of plastics no longer restraint portion 2 overturns, and active part 2 is opened relief hole 11 and carried out pressure release.Frictional force between this structural requirement working of plastics and active part 2 is less than aforesaid predetermined value, timely pressure release when the pressure that could be subject at active part 2 reaches predetermined value, protection transformer safety.
In conjunction with see Fig. 1, preferably, active part 2 comprises connecting plate 21 and turnover board 22, wherein connecting plate 21 is fixed on fixing part 1, turnover board 22 is connected with connecting plate 21, and can overturn around the joint of itself and connecting plate 21, turnover board 22 corresponds to relief hole 11 and arranges, and is used to open or close relief hole 11.Under aforesaid first state, pressure limiting structure 3 is arranged on turnover board 22 and fixing part 1.
Further preferably, turnover board 22 comprises the first plate body 221, two the second plate bodys 222 and the 3rd plate body 223, wherein the first plate body 221 is arranged corresponding to the top of relief hole 11, first side of the first plate body 221 is connected with connecting plate 21, and the first plate body 221 can overturn around joint, second side relative with the first side of the first plate body 221 has the first assembly department 224 for installing pressure limiting structure 3, when pressure limiting structure 3 is plastic screw, the first assembly department 224 is the first screw hole for wearing plastic screw.Two the second plate bodys 222 are vertically connected on the both sides adjacent with the first side of the first plate body 221 respectively, and two the second plate bodys 222 are not all connected with connecting plate 21, and two the second plate bodys 222 can overturn with the first plate body 221.3rd plate body 223 is vertically connected on the second side of the first plate body 221, and the 3rd plate body 223 is not all connected with two the second plate bodys 222.Enclose " box " shape structure defining a side opening between first plate body 221, two the second plate body 222 and the 3rd plate body 223, " box " shape structure should have holding space, fixing part 1 entirety is embedded in holding space.This structure can well close relief hole 11, and when not needing pressure release, active part 2 is located on fixing part 1, effectively prevents pressure leakages.
In conjunction with see Fig. 2, preferably, be provided with multiple weak point 23 in joint, multiple weak point 23 is arranged along the upset axial direction interval of active part 2, active part 2 and the intensity of the joint of fixing part 1 can be reduced further, active part 2 can be overturn around joint smoothly.
Further preferably, multiple weak point 23 is through hole.
Certainly, multiple weak point 23 also can be not through groove respectively, the same effect can playing the join strength reducing active part 2 and fixing part 1 joint.
In conjunction with see Fig. 1 and Fig. 3, preferably, fixing part 1 comprises body 13, mounting plate 14 and fixed plate 15, wherein body 13 is " box " shape structure corresponding with the holding space of active part 2 and the base plate of body 13 is provided with aforesaid relief hole 11, when active part 2 is located on body 13, between active part 2 and body 13, form the cavity comparatively closed.Mounting plate 14 is fixed on body 13 and with the connecting plate 21 of active part 2 and is fixedly connected with.Fixed plate 15 to be fixed on body 13 and to be oppositely arranged with mounting plate 14, and fixed plate 15 has the second assembly department 151 for installing pressure limiting structure 3.Be the situation of plastic screw for pressure limiting structure 3, the second assembly department 151 is the second screw hole for wearing plastic screw.Second assembly department 151 is arranged on fixed plate 15 and can avoids damaging body 13, if damage can a replacing fixed plate 15 for fixed plate 15, without the need to changing fixing part 1 entirety.
Further preferably, be fixedly connected with by bolt 5 between mounting plate 14 with connecting plate 21, be convenient to dismounting.In order to avoid bolt 5 destroys body 13, preferably, form receiving groove 12 between mounting plate 14 and body 13, bolt 5 stretches in receiving groove 12 through after connecting plate 21 and mounting plate 14 successively, can sheathed nut easily.
The concrete structure of mounting plate 14 is, mounting plate 14 comprises the two blocks of side plates be vertically fixedly connected with, and wherein one block of side plate is fixedly connected with body 13, and another block side plate is used for wearing bolt 5 and is fixedly connected with connecting plate 21.Two blocks of side plates and connecting plate 21 define receiving groove 12.
When joint intensity when transformer work calories causes pressure excessive or between active part 2 and fixing part 1 is too small, enormous impact likely makes turnover board 22 flip angle excessive, even causes turnover board 22 to disconnect from joint.In order to avoid this phenomenon occurs, preferably, fixing part 1 is provided with limited part 4, limited part 4 is for limiting the flip angle of turnover board 22.
Specifically, limited part 4 comprises the first side plate 41 and the second side plate 42, first side plate 41 is fixed on mounting plate 14, and the height of the first side plate 41 is higher than the height of fixing part 1, second side plate 42 is fixed on the top of the first side plate 41 and tilts to extend near the direction of active part 2, the angle district of the first side plate 41 and the second side plate 42, towards active part 2, can contact the second side plate 42 in active part 2 umklapp process, thus the flip angle in restraint portion 2.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: adopt mechanical pressure release device can effectively discharge because of the pressure that heat produces in transformer working procedure, structure is simple, pressure release is reliable for effect, guarantees transformer safety work.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a pressure relief device for transformer, is characterized in that, comprising:
Fixing part (1), described fixing part (1) has relief hole (11);
Active part (2), described active part (2) is arranged on described fixing part (1) with relief hole described in opening and closing (11) turningly; And
Pressure limiting structure (3), described pressure limiting structure (3) has the first state that the described active part of restriction (2) overturns, and removes the second state to the restriction of described active part (2) when described active part (2) pressure is more than or equal to predetermined value.
2. the pressure relief device of transformer according to claim 1, it is characterized in that, described pressure limiting structure (3) comprises working of plastics, the intensity of described working of plastics is less than or equal to the pressure of described predetermined value to described active part (2), under described first state, described working of plastics is fixedly connected with described active part (2) with described fixing part (1).
3. the pressure relief device of transformer according to claim 2, is characterized in that, described working of plastics is plastic screw, and under described first state, described plastic screw is fixedly located on described fixing part (1) and described active part (2).
4. the pressure relief device of transformer according to claim 1, is characterized in that, described active part (2) comprising:
Connecting plate (21), described connecting plate (21) is fixed on described fixing part (1); And
Turnover board (22), described turnover board (22) is connected with described connecting plate (21), and is arranged on described fixing part (1) around joint turningly;
Under described first state, described pressure limiting structure (3) is arranged on described turnover board (22) with on described fixing part (1).
5. the pressure relief device of transformer according to claim 4, is characterized in that, described turnover board (22) comprising:
First plate body (221), first side of described first plate body (221) is connected with described connecting plate (21), and second side relative with described first side of described first plate body (221) has the first assembly department (224) for arranging described pressure limiting structure (3);
Two the second plate bodys (222), described two the second plate bodys (222) are connected to the both sides adjacent with described first side of described first plate body (221); And
3rd plate body (223), described 3rd plate body (223) is connected to described second side of described first plate body (221);
Described first plate body (221), described two the second plate bodys (222) and described 3rd plate body (223) enclose the holding space formed for holding described fixing part (1).
6. the pressure relief device of transformer according to claim 1, it is characterized in that, described active part (2) has multiple weak point (23) with the joint of described fixing part (1), and described multiple weak point (23) is arranged along the upset axial direction interval of described active part (2).
7. the pressure relief device of the transformer stated according to claim 6, it is characterized in that, described multiple weak point (23) is through hole.
8. the pressure relief device of transformer according to claim 1, is characterized in that, described fixing part (1) comprising:
Body (13), described body (13) has described relief hole (11);
Mounting plate (14), described mounting plate (14) is fixed on described body (13), described mounting plate (14) is connected with described active part (2); And
Fixed plate (15), described fixed plate (15) is fixed on described body (13), and described fixed plate (15) has the second assembly department (151) for installing described pressure limiting structure (3).
9. the pressure relief device of transformer according to claim 8, it is characterized in that, described mounting plate (14) is connected by bolt (5) with described active part (2), has the receiving groove (12) for holding described bolt (5) between described mounting plate (14) and described body (13).
10. the pressure relief device of transformer according to claim 1, is characterized in that, the pressure relief device of described transformer also comprises the limited part (4) of the flip angle for limiting described active part (2), and described limited part (4) comprising:
First side plate (41), described first side plate (41) is fixed on described fixing part (1); And
Second side plate (42), described second side plate (42) is fixed on described first side plate (41) and to the direction of close described active part (2) to tilt to extend.
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 true CN104728480A (en) | 2015-06-24 |
| CN104728480B CN104728480B (en) | 2020-06-16 |
Family
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) |
Cited By (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 (7)
| 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 |
| CN203135245U (en) * | 2013-03-14 | 2013-08-14 | 宝光集团有限公司 | Novel switch cabinet pressure-releasing device |
| 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 |
-
2013
- 2013-12-24 CN CN201310724492.4A patent/CN104728480B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| CN203135245U (en) * | 2013-03-14 | 2013-08-14 | 宝光集团有限公司 | Novel switch cabinet pressure-releasing device |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4258497A1 (en) * | 2022-04-06 | 2023-10-11 | Abb Schweiz Ag | Enclosure for electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104728480B (en) | 2020-06-16 |
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Granted publication date: 20200616 |