CN216524576U - Low-voltage air leakage alarm device with self-checking function for vacuum contactor - Google Patents
Low-voltage air leakage alarm device with self-checking function for vacuum contactor Download PDFInfo
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- CN216524576U CN216524576U CN202122783027.0U CN202122783027U CN216524576U CN 216524576 U CN216524576 U CN 216524576U CN 202122783027 U CN202122783027 U CN 202122783027U CN 216524576 U CN216524576 U CN 216524576U
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Abstract
The utility model discloses a low-pressure gas leakage alarm device with a self-checking function for a vacuum contactor, which belongs to the technical field of vacuum contactors, and comprises a glass shell, wherein a fixed contact is arranged at the bottom end of the glass shell, a movable contact is arranged at the top end of the glass shell, a detection tube is fixedly connected onto the side wall of the glass shell, a plurality of vent grooves are formed in the side wall of the glass shell, which is close to the detection tube, and communicated with the detection tube, a piston is connected onto the inner wall of the detection tube in a sliding manner, a seal sleeve is fixedly connected onto the outer wall of the piston, when the gas leakage occurs in the glass shell, a contact rod is in contact with a trigger switch to trigger a second fixed block to play a role in reminding a worker, and whether the problem of the sealing property of the seal sleeve occurs or not can be judged by moving a magnet and observing the moving condition of the piston, the condition of erroneous judgment is avoided, and the stability of the equipment is improved.
Description
Technical Field
The utility model relates to the technical field of vacuum contactors, in particular to a low-voltage air leakage alarm device with a self-checking function for a vacuum contactor.
Background
Vacuum contactors utilize vacuum interrupters to extinguish arcs for frequent switching on and off of normal operating currents, typically for remotely switching on and off medium and low voltage ac motors that frequently start and stop. The housing of the vacuum interrupter is made of glass or ceramic insulating material, and the degree of vacuum inside the vacuum interrupter is usually 0.01Pa or more. Because the air in the shell is less, the contact opening distance can be made very small, and the electric arc is also easier to extinguish.
The main reason that the vacuum contactor can extinguish arc is because the contact is in vacuum environment, but if the inside of explosion chamber appears the condition of losing air, then vacuum contactor has just lost its practical meaning, but current vacuum contactor does not possess gas leakage alarm device, and whether the staff can't be timely know vacuum contactor and leak air, consequently needs further improvement.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Aiming at the problems in the prior art, the utility model aims to provide a low-pressure gas leakage alarm device with a self-checking function for a vacuum contactor.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A low-voltage air leakage alarm device with a self-checking function for a vacuum contactor comprises a glass shell, wherein a fixed contact is installed at the bottom end of the glass shell, a moving contact is installed at the top end of the glass shell, a detection tube is fixedly connected to the side wall of the glass shell, a plurality of vent grooves are formed in the side wall of the glass shell, which is close to the detection tube, and communicated with the detection tube, a piston is connected to the inner wall of the detection tube in a sliding manner, a sealing sleeve is fixedly connected to the outer wall of the piston and attached to the inner wall of the detection tube, a first fixing block is fixedly connected to the side wall of the piston, which is far away from the glass shell, a second fixing block is fixedly connected to the inner side wall of the detection tube, which is far away from the glass shell, an extension spring is fixedly connected between the first fixing block and the second fixing block, a contact rod is fixedly connected to the side wall of the first fixing block, and a trigger switch is fixedly connected to the side wall of the second fixing block, which is close to the first fixing block, the trigger switch is located the positive side of feeler lever, fixedly connected with pilot lamp on the outer wall of second fixed block, and the pilot lamp is connected with the trigger switch electricity.
Further, the mounting groove has been seted up to the inside of piston, the inside fixedly connected with iron plate of mounting groove, the cover is equipped with the sleeve pipe on the outer wall of detecting tube, fixedly connected with magnet on the sheathed tube inner wall, sliding connection between the outer wall of magnet and detecting tube, through the aforesaid setting, accessible iron plate drives piston round trip movement when magnet round trip movement on the detecting tube, and is concrete, "appeal" between magnet and the iron plate is greater than extension spring's "pulling force", through the aforesaid setting, make magnet can not drive the piston removal by the restriction of extension spring.
Further, fixedly connected with stopper on the outer wall of detecting tube can play spacing effect to magnet through setting up of stopper, has avoided magnet to drop from the detecting tube.
Further, the air pressure of one side, far away from the glass shell, of the piston is set to be standard atmospheric pressure, and through the setting, the piston is far away from the second fixing block in the initial state.
Furthermore, the fixed contact is fixedly connected with a protective cover on the outer wall of the fixed contact, the protective cover is positioned on the outer side of the bottom end of the moving contact, and the fixed contact and the moving contact can be protected by the protective cover.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages that:
(1) when the condition of gas leakage appears in the glass casing, the action that the feeler lever played the warning to the staff with the contact trigger second fixed block of trigger switch contact, and the accessible removes magnet and observes the removal condition of piston and judges whether the leakproofness of seal cover has appeared the problem, has avoided the condition of erroneous judgement to appear, has improved the stability of equipment.
(2) The mounting groove has been seted up to the inside of piston, the inside fixedly connected with iron plate of mounting groove, the cover is equipped with the sleeve pipe on the outer wall of detecting tube, fixedly connected with magnet on the sheathed tube inner wall, sliding connection between the outer wall of magnet and detecting tube, through the aforesaid setting, accessible iron plate drives piston round trip movement when magnet round trip movement on the detecting tube, and is concrete, "appeal" between magnet and the iron plate is greater than extension spring's "pulling force", through the aforesaid setting for magnet can not drive the piston removal by the restriction of extension spring.
(3) Fixedly connected with stopper on the outer wall of detecting tube can play spacing effect to magnet through setting up of stopper, has avoided magnet to drop from the detecting tube.
(4) The air pressure of one side, far away from the glass shell, of the piston is set to be standard atmospheric pressure, and through the setting, the piston is far away from the second fixed block in the initial state.
(5) The fixed contact is fixedly connected with a protective cover on the outer wall of the fixed contact, the protective cover is positioned on the outer side of the bottom end of the moving contact, and the protective cover can play a role in protecting the contact point of the fixed contact and the moving contact through setting the protective cover.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic view of the front cross-sectional structure of the detector tube of the present invention.
The reference numbers in the figures illustrate:
1. a glass housing; 2. fixing a contact; 3. a moving contact; 4. a protective cover; 5. a detection tube; 6. a vent channel; 7. a piston; 8. sealing sleeves; 9. an iron block; 10. a first fixed block; 11. a second fixed block; 12. an extension spring; 13. a feeler lever; 14. a trigger switch; 15. an indicator light; 16. a sleeve; 17. a magnet; 18. and a limiting block.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a low-pressure gas leakage alarm device with self-checking function for a vacuum contactor comprises a glass housing 1, a fixed contact 2 is installed at the bottom end of the glass housing 1, a protective cover 4 is fixedly connected to the outer wall of the fixed contact 2, the protective cover 4 is located at the outer side of the bottom end of a movable contact 3, the protective cover 4 is arranged to protect the contact point of the fixed contact 2 and the movable contact 3, the movable contact 3 is installed at the top end of the glass housing 1, a detection tube 5 is fixedly connected to the side wall of the glass housing 1, the detection tube 5 is made of transparent glass material, a plurality of vent grooves 6 are formed in the side wall of the glass housing 1 close to the detection tube 5, the vent grooves 6 are communicated with the detection tube 5, a piston 7 is slidably connected to the inner wall of the detection tube 5, a sealing sleeve 8 is fixedly connected to the outer wall of the piston 7, and the sealing sleeve 8 is attached to the inner wall of the detection tube 5, atmospheric pressure that glass casing 1 one side was kept away from to piston 7 sets up to standard atmospheric pressure, through the aforesaid setting, make piston 7 keep away from second fixed block 11 under initial condition, piston 7 keeps away from the first fixed block 10 of fixedly connected with on the lateral wall of glass casing 1, fixedly connected with second fixed block 11 on the inside wall that glass casing 1 was kept away from to detecting tube 5, fixedly connected with extension spring 12 between first fixed block 10 and the second fixed block 11, fixedly connected with feeler lever 13 on the lateral wall that first fixed block 10 is close to second fixed block 11, fixedly connected with trigger switch 14 on the lateral wall that second fixed block 11 is close to first fixed block 10, trigger switch 14 is located feeler lever 13 directly to the side, fixedly connected with pilot lamp 15 on the outer wall of second fixed block 11, pilot lamp 15 is connected with trigger switch 14 electricity.
Referring to fig. 1-2, a mounting groove is formed in the piston 7, an iron block 9 is fixedly connected to the inside of the mounting groove, a sleeve 16 is sleeved on the outer wall of the detection tube 5, a magnet 17 is fixedly connected to the inner wall of the sleeve 16, and the magnet 17 is slidably connected to the outer wall of the detection tube 5. by the above arrangement, the magnet 17 can drive the piston 7 to move back and forth through the iron block 9 when moving back and forth on the detection tube 5. specifically, the "attraction" between the magnet 17 and the iron block 9 is greater than the "pulling force" of the extension spring 12, by the above arrangement, the magnet 17 can drive the piston 7 to move without being limited by the extension spring 12, a limit block 18 is fixedly connected to the outer wall of the detection tube 5, and the setting of the limit block 18 can limit the magnet 17, so that the magnet 17 is prevented from falling off from the detection tube 5.
When the glass shell is used, in an initial state, the inside of the glass shell 1 is in a vacuum state, so the piston 7 is far away from the second fixed block 11, if the glass shell 1 leaks air, the pressure inside the glass shell 1 becomes standard atmospheric pressure, at this time, the extension spring 12 pulls the contact rod 13 to move towards the direction of the second fixed block 11 until the contact rod 13 contacts with the trigger switch 14, the indicator light 15 lights up to remind a worker, because the sealing sleeve 8 may lose the sealing effect after long-time use, if the sealing sleeve 8 loses the sealing effect, the pressure on two sides of the piston 7 is equivalent, the extension spring 12 also pulls the contact rod 13 to move towards the direction of the second fixed block 11 to light the indicator light 15, at this time, the worker needs to move the magnet 17 back and forth on the detection tube 5, at this time, the piston 7 moves along with the movement of the magnet 17 due to the effect of the iron block 9, if the piston 7 can only move slowly along with the magnet 17, the sealing effect of the sealing sleeve 8 is represented as a problem, and if the piston 7 can move relatively quickly along with the magnet 17, the air leakage condition is represented in the glass shell 1; compared with the prior art, when the condition of gas leakage appears in glass housing 1, feeler lever 13 and 14 contacts and triggers second fixed block 11 and play the effect of reminding the staff, and the accessible removes magnet 17 and observes the removal condition of piston 7 and judges whether the leakproofness of seal cover 8 has appeared the problem, has avoided appearing the condition of erroneous judgement, has improved the stability of equipment.
The above are merely preferred embodiments of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (5)
1. The utility model provides a low pressure gas leakage alarm device that is used for vacuum contactor's self-checking function that has, includes glass housing (1), fixed contact (2) are installed to the bottom of glass housing (1), moving contact (3), its characterized in that are installed on the top of glass housing (1): the detection device is characterized in that a detection tube (5) is fixedly connected to the side wall of the glass shell (1), a plurality of vent grooves (6) are formed in the side wall, close to the detection tube (5), of the glass shell (1), the vent grooves (6) are communicated with the detection tube (5), a piston (7) is connected to the inner wall of the detection tube (5) in a sliding mode, a sealing sleeve (8) is fixedly connected to the outer wall of the piston (7), the sealing sleeve (8) is attached to the inner wall of the detection tube (5), a first fixing block (10) is fixedly connected to the side wall, far away from the glass shell (1), of the piston (7), a second fixing block (11) is fixedly connected to the inner side wall, far away from the glass shell (1), of the detection tube (5), an extension spring (12) is fixedly connected between the first fixing block (10) and the second fixing block (11), and a touch rod (13) is fixedly connected to the side wall, close to the second fixing block (11), of the first fixing block (10), fixedly connected with trigger switch (14) on second fixed block (11) are close to the lateral wall of first fixed block (10), trigger switch (14) are located the positive side of feeler lever (13), fixedly connected with pilot lamp (15) on the outer wall of second fixed block (11), pilot lamp (15) are connected with trigger switch (14) electricity.
2. The low-pressure gas leakage alarm device with the self-checking function for the vacuum contactor as claimed in claim 1, wherein: the mounting groove has been seted up to the inside of piston (7), the inside fixedly connected with iron plate (9) of mounting groove, the cover is equipped with sleeve pipe (16) on the outer wall of detecting tube (5), fixedly connected with magnet (17) on the inner wall of sleeve pipe (16), sliding connection between the outer wall of magnet (17) and detecting tube (5).
3. The low-pressure gas leakage alarm device with the self-checking function for the vacuum contactor as claimed in claim 1, wherein: the outer wall of the detection pipe (5) is fixedly connected with a limiting block (18).
4. The low-pressure gas leakage alarm device with the self-checking function for the vacuum contactor as claimed in claim 1, wherein: and the air pressure of one side of the piston (7) far away from the glass shell (1) is set to be standard atmospheric pressure.
5. The low-pressure gas leakage alarm device with the self-checking function for the vacuum contactor as claimed in claim 1, wherein: the fixed contact is characterized in that a protective cover (4) is fixedly connected to the outer wall of the fixed contact (2), and the protective cover (4) is located on the outer side of the bottom end of the moving contact (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122783027.0U CN216524576U (en) | 2021-11-15 | 2021-11-15 | Low-voltage air leakage alarm device with self-checking function for vacuum contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122783027.0U CN216524576U (en) | 2021-11-15 | 2021-11-15 | Low-voltage air leakage alarm device with self-checking function for vacuum contactor |
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| CN216524576U true CN216524576U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122783027.0U Active CN216524576U (en) | 2021-11-15 | 2021-11-15 | Low-voltage air leakage alarm device with self-checking function for vacuum contactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115042044A (en) * | 2022-05-25 | 2022-09-13 | 涡阳县高炉创新包装有限责任公司 | Glass production is with glass side grinding device |
| CN115568190A (en) * | 2022-11-09 | 2023-01-03 | 兰洋(宁波)科技有限公司 | Sealed cooling box and cabinet for IDC server |
| CN115877820A (en) * | 2022-12-05 | 2023-03-31 | 张骏 | New energy automobile electronic water pump controller production detection device |
-
2021
- 2021-11-15 CN CN202122783027.0U patent/CN216524576U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115042044A (en) * | 2022-05-25 | 2022-09-13 | 涡阳县高炉创新包装有限责任公司 | Glass production is with glass side grinding device |
| CN115042044B (en) * | 2022-05-25 | 2023-11-24 | 涡阳县高炉创新包装有限责任公司 | Glass side grinding device for glass production |
| CN115568190A (en) * | 2022-11-09 | 2023-01-03 | 兰洋(宁波)科技有限公司 | Sealed cooling box and cabinet for IDC server |
| CN115877820A (en) * | 2022-12-05 | 2023-03-31 | 张骏 | New energy automobile electronic water pump controller production detection device |
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