CN109256713A - Explosion-protection equipment and method at the top of switchgear - Google Patents
Explosion-protection equipment and method at the top of switchgear Download PDFInfo
- Publication number
- CN109256713A CN109256713A CN201811410272.3A CN201811410272A CN109256713A CN 109256713 A CN109256713 A CN 109256713A CN 201811410272 A CN201811410272 A CN 201811410272A CN 109256713 A CN109256713 A CN 109256713A
- Authority
- CN
- China
- Prior art keywords
- partition
- cabinet body
- explosion
- baffle
- electric pushrod
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses explosion-protection equipment and methods at the top of a kind of switchgear, including cabinet body and partition, the partition is equipped with the rupture pressure disc for discharging the lower partition volume expansions gas, the partition is connected by Buffer Unit at the top of the inner wall of the cabinet body, the Buffer Unit includes baffle, first spring, electric pushrod and contact switch, when expanding gas pressure in the lower partition space is more than the setup pressure value of the rupture pressure disc, baffle described in simultaneously pushing tow is discharged from the rupture pressure disc in expanding gas, the baffle moves up compression first spring and is closed the contact switch at setting stroke, the partition is moved up to control the electric pushrod and shrink its push rod, expanding gas is discharged from the exhaust window that cabinet body top two sides are arranged in；The present apparatus goes out its quick release when can generate quick biggish expanding gas in switchgear, effectively prevents the explosion damage of switchgear.
Description
Technical field
The present invention relates to explosion-protection equipment and methods at the top of a kind of switchgear, belong to technical field of electric equipment.
Background technique
Can generally have bus-bar room, overpressure means, relay instrument room, disconnecting switch, breaker chamber etc. in switchgear, by
It is located in switchgear in various first electric appliances, operating space is small, these electrical components generate a large amount of heat when being powered, and will lead to
Inside switch cabinet temperature increases, and air pressure increases, and air pressure can not discharge in time, will lead to switchgear explosion, brings huge peace
Full hidden danger and economic loss.
The explosion-proof of existing switchgear generallys use relief valve or rupture pressure disc, and relief valve and rupture pressure disc pressure release are at the uniform velocity
Slow process when air pressure is larger, can not quickly discharge pressure in cabinet, still can occur when gas expansion is very fast in cabinet body
Explosion, and existing rupture pressure disc is also not easy to replace after damage.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of switchgear top explosion-protection equipment, can be produced in switchgear
Its quick release is gone out when raw quickly biggish expanding gas, effectively prevents the explosion damage of switchgear.
The technical scheme is that explosion-protection equipment at the top of a kind of switchgear, comprising: cabinet body is arranged in the cabinet body
There is the partition that can be slided along the cabinet body short transverse, the partition is equipped with for discharging the lower partition volume expansions gas
The rupture pressure disc of body, the partition are connected by Buffer Unit at the top of the inner wall of the cabinet body；
The Buffer Unit include activity stick on the partition upper surface and for block the rupture pressure disc baffle, setting exist
The first spring between at the top of the baffle and the cabinet body inner wall, electric pushrod, the Yi Jishe that the cabinet body top is set
The contact switch between at the top of the baffle and the cabinet body inner wall is set, the pedestal of the electric pushrod is fixedly mounted on described
The top of cabinet body, and the push rod of electric pushrod is pressed on the partition upper surface, the contact switch is described electronic for controlling
The work of push rod；
When expanding gas pressure in the lower partition space is more than the setup pressure value of the rupture pressure disc, expanding gas is from institute
Baffle described in rupture pressure disc discharge and pushing tow is stated, the baffle moves up compression first spring and makes institute at setting stroke
Contact switch closure is stated, moves up the partition to control the electric pushrod and shrink its push rod, expanding gas is from setting
The exhaust window in cabinet body top two sides is set to discharge.
The baffle is equipped with round bar, is fixed with contact at the top of the round bar, is matched with the inner wall top of the cabinet body
Portion be equipped with contact switch, the round bar move up setting stroke when contact contacted with contact switch be used in control it is described electronic
The circuit of push rod work is connected.
Second spring is equipped between at the top of the partition and the cabinet body inner wall, the second spring is suitable for upward in partition
Partition buffering energy-absorbing described in pushing tow when fast moving.
The cabinet body inner wall is equipped with the support frame for being used to support partition, and the partition relies on support frame as described above.
Gasket is equipped between support frame as described above and partition.
The two sides of the partition are symmetrically arranged with sliding block, are matched with the cabinet body inner wall and are vertically equipped with sliding slot, the sliding block can
It is slided in sliding slot.
The middle position of the partition is equipped with tapped through hole, and the tapped through hole internal screw thread is connected with the fillet of screw, the spiral shell
The rupture pressure disc is fixedly installed in line circle.
The beneficial effects of the present invention are: compared with the prior art, the advantages of the present invention are as follows: 1, when inside switch cabinet element
When breaking down, a large amount of heat is generated, the gas rapid expanding in cabinet can break through the rupture pressure disc on partition, carry out cabinet body
Interior air pressure release, prevents from exploding, after release, it is only necessary to replace the fillet of screw i.e. and can reach the purpose of replacement rupture pressure disc；2,
If gas expansion is too fast, cause air pressure excessive, can not be discharged quickly through the rupture pressure disc on partition, rupture pressure disc discharge at this time
Gas can impact the baffle above it, and baffle is impacted by air pressure, compression the first spring move upwards, when air pressure reach to cabinet body into
Before the stage of row damage, air pressure just overcomes the elastic force of the first spring, and baffle is pushed up, and connects the contact on baffle
The contact switch at the top of cabinet body is touched, circuit is connected, and electric pushrod rapid desufflation, partition, can not by the pressure of electric pushrod at this time
It is quickly jacked up by the gas expanded in cabinet body, partition slides into above exhaust window, and gas can be quick by exhaust window in cabinet
Release, prevent cabinet body gas expansion too fast, can not quick release, lead to the generation of cabinet body explosive event, after release, contact
Switch and contact disconnect under the action of the first spring power, reset partition by starting electric pushrod.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is the structural schematic diagram in another direction of the invention；
Fig. 3 is the structural schematic diagram in another direction of the invention；
Fig. 4 is the enlarged structure schematic diagram of a-quadrant in Fig. 2 of the present invention；
In figure: 1- cabinet body；2- support frame；3- partition；4- square three-way groove；5- electric pushrod；6- tapped through hole；The 7- fillet of screw；8-
Rupture pressure disc；9- baffle；The first spring of 10-；11- round bar；The contact 12-；13- contact switch；14- gasket；15- second spring；
16- sliding slot；17- sliding block；18- exhaust window.
Specific embodiment
With reference to the accompanying drawing and invention is described further in specific embodiment:
Referring to figs. 1 to Fig. 4, explosion-protection equipment at the top of a kind of switchgear according to the present invention, comprising: cabinet body 1 is provided in cabinet body 1
Cabinet body 1 is divided into upper space and lower space by the partition 3 that can be slided along 1 short transverse of cabinet body, partition 3, and middle and lower part is empty
Between for installing various electric elements, the rupture pressure disc 8 for discharging lower space expanding gas is installed on partition 3.It is preferred that
Ground is formed with tapped through hole 6 in the middle position of partition 3, the fillet of screw 7 is connected in 6 internal screw thread of tapped through hole, in the fillet of screw 7
It is fixedly installed with rupture pressure disc 8, in order to being capable of quick-replaceable after 8 explosion of rupture pressure disc.
Partition 3 is connected by Buffer Unit at the top of the inner wall of cabinet body 1, and Buffer Unit includes that activity sticks on table on partition 3
Face and for blocking the baffle 9 of rupture pressure disc 8, the first spring 10 being arranged between at the top of 1 inner wall of baffle 9 and cabinet body, setting exist
The electric pushrod 5 on 1 top of cabinet body and the contact switch 13 being arranged between at the top of 1 inner wall of baffle 9 and cabinet body, electric pushrod 5
Pedestal be fixedly mounted on the top of cabinet body 1, and the push rod of electric pushrod 5 is pressed on 3 upper surface of partition, therefore partition 3
The contractive action of electric pushrod 5 can be followed and moved up and down, contact switch 13 is used to control the work of electric pushrod 5, in partition 3
1 two sidewalls of cabinet body of top are equipped with exhaust window 18.Preferably, square three-way groove 4 there are four being set on the top of cabinet body 1, it is electronic to push away
The pedestal of bar 5 is fixedly mounted on the top of square three-way groove 4, and its push rod extends downwardly and is pressed on the upper surface of partition 3.
It is equipped with round bar 11 on baffle 9, is fixed with contact 12 at the top of round bar 11, is matched with the inner wall top of cabinet body 1
Portion is equipped with contact switch 13, when round bar 11 moves up setting stroke (the distance between 11 top of round bar and contact switch 13)
Contact 12 is contacted with contact switch 13 is used in the circuit connection that control electric pushrod 5 works, at this time 5 rapid desufflation of electric pushrod
Its push rod, to no longer limit moving up for partition 3.
The support frame 2 for being used to support partition 3 is equipped in cabinet body inner wall, partition 3 relies on support frame 2, it is preferable that in cabinet
1 inner wall of body is equipped with a circle boss as support frame 2.Gasket 14 is equipped between support frame 2 and partition 3.Preferably, gasket
14 are fixed on the top of support frame 2, increase the leakproofness between partition 3 and support frame 2.
It is symmetrically arranged with sliding block 17 in the two sides of partition 3,1 inner wall of cabinet body is matched with and is vertically equipped with sliding slot 16, sliding block 17 can be
Sliding, so can be improved the stability moved when partition 3 is jacked up upwards in sliding slot 16.
Multiple second springs 15 are provided between at the top of 1 inner wall of partition 3 and cabinet body, second spring 15 is suitable in partition 3
3 buffering energy-absorbing of pushing tow partition when fast moving upwards.Preferably, 15 one end of second spring is fixed at the top of the inner wall of cabinet body 1, and
The other end is hanging downwards and keeps certain distance with 3 upper surface of partition, it can buffering energy-absorbing prevents damage inner body, again
Be avoided that contact and 13 stress of contact switch it is excessive and caused by damage.
When inside switch cabinet element failure, a large amount of heat, the gas rapid expanding in cabinet, in expansion gas are generated
When body pressure is more than the setup pressure value of rupture pressure disc 8, the rupture pressure disc 8 on partition 3 can be broken through, the air pressure carried out in cabinet body 1 is released
It puts, prevents from exploding, after release, it is only necessary to replace rupture pressure disc 8.
If gas expansion is too fast, cause air pressure excessive, can not discharge quickly through the rupture pressure disc 8 on partition 3, prevent at this time
The gas being discharged at quick-fried film 8 can impact the baffle 9 of 8 top of rupture pressure disc, and baffle 9 is impacted pushing tow by air pressure, compress the first spring 10
It moves upwards, before air pressure reaches the stage that can be damaged cabinet body 1, air pressure can just overcome the bullet of the first spring 10
Property power, the contact switch 13 for contacting contact 12 on baffle 9 at the top of 1 inner wall of cabinet body at setting stroke connects circuit, from
And its push rod of 5 rapid desufflation of electric pushrod is controlled, partition 3 can be expanded not by the pressure of electric pushrod 5 in cabinet body 1 at this time
Gas quickly jacks up, and partition 3 slides into 18 top of exhaust window, and gas can be prevented by 18 quick release of exhaust window in cabinet
1 gas expansion of cabinet body is too fast, can not quick release, cause cabinet body 1 explode the case where, after release, contact switch 13 and touching
Point 12 disconnects under the action of the first 10 elastic force of spring, resets partition 3 by starting electric pushrod 5.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (7)
1. explosion-protection equipment at the top of a kind of switchgear, comprising: cabinet body (1), it is characterised in that: being provided in the cabinet body (1) can
Along the partition (3) of the cabinet body (1) short transverse sliding, the partition (3) is equipped with for discharging the partition (3) lower part sky
Between expanding gas rupture pressure disc (8), the partition (3) connected at the top of the inner wall of the cabinet body (1) by Buffer Unit；
The Buffer Unit includes that activity sticks on the partition (3) upper surface and the baffle for blocking the rupture pressure disc (8)
(9), the first spring (10) between at the top of the baffle (9) and the cabinet body (1) inner wall is set, is arranged in the cabinet body
(1) contact switch of the electric pushrod (5) on top and setting between the baffle (9) and the cabinet body (1) inner wall top
(13), the pedestal of the electric pushrod (5) is fixedly mounted on the top of the cabinet body (1), and the push rod of electric pushrod (5) presses
In the partition (3) upper surface, the contact switch (13) is used to control the work of the electric pushrod (5)；
When the expanding gas pressure of the partition (3) lower space is more than the setup pressure value of the rupture pressure disc (8), gas is expanded
Body moves up compression first spring from baffle (9) described in the rupture pressure disc (8) discharge and pushing tow, the baffle (9)
(10) and at setting stroke the contact switch (13) are closed, made to control the electric pushrod (5) and shrink its push rod
The partition (3) moves up, expanding gas from setting the cabinet body (1) top two sides exhaust window (18) to outlet
Out.
2. explosion-protection equipment at the top of switchgear according to claim 1, it is characterised in that: the baffle (9) is equipped with round bar
(11), contact (12) are fixed at the top of the round bar (11), are matched at the top of the inner wall of the cabinet body (1) and are opened equipped with contact
It closes (13), contact (12) are contacted with contact switch (13) when the round bar (11) moves up setting stroke is used in described in control
The circuit of electric pushrod (5) work is connected.
3. explosion-protection equipment at the top of switchgear according to claim 1, it is characterised in that: the partition (3) and the cabinet body
(1) second spring (15) are equipped between inner wall top, the second spring (15) is suitable for the top when partition (3) fast moves upwards
Push away the partition (3) buffering energy-absorbing.
4. explosion-protection equipment at the top of switchgear according to claim 1, it is characterised in that: cabinet body (1) inner wall, which is equipped with, to be used
Support frame (2) in supporting clapboard (3), the partition (3) rely on support frame as described above (2).
5. explosion-protection equipment at the top of switchgear according to claim 4, it is characterised in that: support frame as described above (2) and partition (3)
Between be equipped with gasket (14).
6. explosion-protection equipment at the top of switchgear according to claim 4, it is characterised in that: the two sides of the partition (3) are symmetrical
It equipped with sliding block (17), is matched with the cabinet body (1) inner wall and is vertically equipped with sliding slot (16), the sliding block (17) can be in sliding slot (16)
Sliding.
7. explosion-protection equipment at the top of switchgear according to claim 1, it is characterised in that: the middle position of the partition (3)
Equipped with tapped through hole (6), tapped through hole (6) internal screw thread is connected with the fillet of screw (7), is fixedly mounted in the fillet of screw (7)
There are the rupture pressure disc (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410272.3A CN109256713A (en) | 2018-11-23 | 2018-11-23 | Explosion-protection equipment and method at the top of switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410272.3A CN109256713A (en) | 2018-11-23 | 2018-11-23 | Explosion-protection equipment and method at the top of switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109256713A true CN109256713A (en) | 2019-01-22 |
Family
ID=65042713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811410272.3A Pending CN109256713A (en) | 2018-11-23 | 2018-11-23 | Explosion-protection equipment and method at the top of switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109256713A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445070A (en) * | 2019-07-24 | 2019-11-12 | 扬州利家科技有限公司 | A kind of explosion-proof main junction box for high-voltage compact motor |
| CN112055489A (en) * | 2019-06-05 | 2020-12-08 | 二工防爆科技股份有限公司 | Explosion-proof cabinet that factor of safety is high |
| CN113410774A (en) * | 2021-05-19 | 2021-09-17 | 河南巨高嘉业电力设备有限公司 | Explosion-proof power distribution cabinet and method for monitoring operation of power distribution cabinet |
| CN117537266A (en) * | 2023-12-06 | 2024-02-09 | 广州德标智能化工程有限公司 | Movable comprehensive medical air supply cabinet |
| CN113410774B (en) * | 2021-05-19 | 2024-06-07 | 河南巨高嘉业电力设备有限公司 | Explosion-proof power distribution cabinet and method for monitoring operation of power distribution cabinet |
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| CN207796172U (en) * | 2017-12-29 | 2018-08-31 | 天津科先液压技术开发有限公司 | A kind of high-precision pneumatic proportional pressure valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055489A (en) * | 2019-06-05 | 2020-12-08 | 二工防爆科技股份有限公司 | Explosion-proof cabinet that factor of safety is high |
| CN110445070A (en) * | 2019-07-24 | 2019-11-12 | 扬州利家科技有限公司 | A kind of explosion-proof main junction box for high-voltage compact motor |
| CN110445070B (en) * | 2019-07-24 | 2020-08-07 | 扬州利家科技有限公司 | Explosion-proof main junction box for high-voltage compact motor |
| CN113410774A (en) * | 2021-05-19 | 2021-09-17 | 河南巨高嘉业电力设备有限公司 | Explosion-proof power distribution cabinet and method for monitoring operation of power distribution cabinet |
| CN113410774B (en) * | 2021-05-19 | 2024-06-07 | 河南巨高嘉业电力设备有限公司 | Explosion-proof power distribution cabinet and method for monitoring operation of power distribution cabinet |
| CN117537266A (en) * | 2023-12-06 | 2024-02-09 | 广州德标智能化工程有限公司 | Movable comprehensive medical air supply cabinet |
| CN117537266B (en) * | 2023-12-06 | 2024-03-29 | 广州德标智能化工程有限公司 | Movable comprehensive medical air supply cabinet |
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