CN204155861U - A kind of explosion-proof high-pressure D.C. contactor that loses heart - Google Patents
A kind of explosion-proof high-pressure D.C. contactor that loses heart Download PDFInfo
- Publication number
- CN204155861U CN204155861U CN201420529017.1U CN201420529017U CN204155861U CN 204155861 U CN204155861 U CN 204155861U CN 201420529017 U CN201420529017 U CN 201420529017U CN 204155861 U CN204155861 U CN 204155861U
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- contactor
- relief pipe
- safety relief
- pressure
- explosion
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Abstract
A kind of explosion-proof high-pressure D.C. contactor that loses heart, comprise contactor main body (1), it is characterized in that: also comprise safety relief pipe (2), the cylinder that described safety relief pipe (2) is one end open, the side of safety relief pipe (2) cylinder enclosed is provided with " cross " shrinkage pool (7).Contactor is in abnormal operation or close to the normal service life limit, when internal temperature and pressure increase to over safety value, stressed and the stress cracking of safety relief pipe arranged, internal high-pressure gas thus passage is gone out from contactor internal cavity, the serious consequence that can effectively avoid product to explode, ensures that contactor keeps its integrality under the situation lost efficacy.
Description
Technical field
The utility model relates to a kind of contactor, particularly a kind of explosion-proof high-pressure D.C. contactor that loses heart.
Background technology
The contactor of automobile refers to and utilizes coil to flow through current induced magnetic field, makes contact closure, realizes effective transmission of power.Conventional contactor is by electromagnetic system (dynamic unshakable in one's determination, fixed core, solenoid), contact system and arc-control device composition.After the solenoid energising of contactor, very strong magnetic field can be produced, make fixed core produce electromagnetic attraction and attract dynamic unshakable in one's determination, and drive contact action: contact closure; When the coil is de-energized, electromagnetic attraction disappears, and dynamic iron core discharges under the effect of retracting spring, and contact is restored: contact disconnects.
Contact can produce electric arc in make and break process, the high temperature that electric arc produces can make contact burn black, burn, singe and produce metallic particles, directly affect the useful life of contactor.General high-voltage DC contactor is commonly used to new energy motor, the fields such as inverter, and electric current can reach 200A or higher, and voltage is then between 500V-900V, and when voltage is more and more higher, the problem of electric arc also becomes more and more serious.Solving one of method of electric arc is the magnetic quenching adopting sealing means, the magnetic field that usual two magnetic conductive boards (permanent magnet) produce is vertical with the line direction of two contacts, adopt sealing technology be isolated from the outside by arc control device and be filled with insulation arc extinguishing gases, to reach good arc quenching effect simultaneously.
When contactor be in abnormal operation or close to the normal service life limit time, internal temperature and pressure increase to over safety value, if can not lose heart normally reduce chamber pressure, contactor is easy to blast, and has very large threat to automobile normal running.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of explosion-proof high-pressure D.C. contactor that loses heart, and solves because internal temperature and pressure increase to over safety value, the problem that contactor inner high voltage gas causes product to burst.
The technical scheme in the invention for solving the above technical problem is:
A kind of explosion-proof high-pressure D.C. contactor that loses heart, comprise contactor main body, it is characterized in that: also comprise safety relief pipe, described safety relief pipe is the cylinder of one end open, and the side of safety relief pipe cylinder enclosed is provided with " cross " shrinkage pool.
Described contactor main body top is provided with seal cover, described safety relief pipe upper end is higher than seal cover plane, seal cover is provided with bossing and matches with safety relief pipe, and bossing top is a little more than safety relief pipe, and bossing radius is slightly wider than safety relief pipe radius.
Described contactor body interior is provided with bracing frame, and bracing frame has the circular hole coordinated with safety relief pipe, and the side of safety relief tube opening communicates with contactor internal cavity.
Described contactor main body comprises stem, fixed contact, moving contact, iron core, moving axis and return spring.Iron core is fixed on moving axis lower end, and return spring is fixed in the middle part of moving axis, and moving contact is arranged on moving axis top; Stem and fixed contact are fixed into an entirety, are in directly over moving contact, the contact of two corresponding two moving contacts of fixed contact difference.
The technique effect of the utility model employing achieved by technique scheme is:
Contactor inside is filled with insulation arc extinguishing gases, if contactor is in abnormal operation or close to the normal service life limit, internal temperature and pressure increase to over safety value, stressed and the stress cracking of safety relief pipe arranged, internal high-pressure gas thus passage is gone out from contactor internal cavity, the serious consequence that can effectively avoid product to explode, ensures that contactor keeps its integrality under the situation lost efficacy.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail
Fig. 1 is structural representation of the present utility model
Fig. 2 is the structural representation of the utility model safety relief pipe
Fig. 3 is the profile of Fig. 2
Fig. 4 is safety relief pipe " cross " shrinkage pool schematic diagram
Wherein, 1-contactor main body, 2-safety relief pipe, 3-seal cover, 4-epoxy glue watertight sealing, 5-bracing frame, 6-bossing, 7-" cross " shrinkage pool, 8-stem, 9-fixed contact, 10-moving contact, 11-is unshakable in one's determination, 12-moving axis, 13-return spring
Embodiment
One is as shown in Figure 1 and Figure 2 lost heart explosion-proof high-pressure D.C. contactor, and comprise contactor main body 1, also comprise safety relief pipe 2, described safety relief pipe 2 is the cylinder of one end open, and the side of safety relief pipe 2 cylinder enclosed is provided with " cross " shrinkage pool 7." cross " shrinkage pool 7 produces the point of stress cracking by 2 power for safety relief pipe, under the effect of internal high-pressure gas pressure, because the shrinkage pool place thin intensity of wall is low, cracking can be produced along cross hairs, gas overflows from internal cavity and reduces pressure, ensures the integrality of contactor construction.
Safety relief pipe 2 tip height higher than in seal cover 3 plane, then seal cover 3 needs to be provided with bossing 6 and matches with safety relief pipe 2, and bossing 6 is also cylindric, and top is a little more than safety relief pipe 2, and radius is slightly wider than safety relief pipe 2 radius.
Safety relief pipe 2 is mounted on the bracing frame 5 of contactor inside, and fixed position has the circular hole coordinated with safety relief pipe 2, and the side of safety relief pipe 2 opening communicates with contactor internal cavity.
Claims (4)
1. a disappointing explosion-proof high-pressure D.C. contactor, comprise contactor main body (1), it is characterized in that: also comprise safety relief pipe (2), the cylinder that described safety relief pipe (2) is one end open, the side of safety relief pipe (2) cylinder enclosed is provided with " cross " shrinkage pool (7).
2. disappointing explosion-proof high-pressure D.C. contactor according to claim 1, it is characterized in that: described contactor main body (1) top is provided with seal cover (3), described safety relief pipe (2) upper end is higher than seal cover (3) plane, seal cover (3) is provided with bossing (6) and matches with safety relief pipe (2), bossing (6) top is a little more than safety relief pipe (2), and bossing (6) radius is slightly wider than safety relief pipe (2) radius.
3. disappointing explosion-proof high-pressure D.C. contactor according to claim 1, it is characterized in that: described contactor body interior is provided with bracing frame (5), bracing frame (5) has the circular hole coordinated with safety relief pipe (2), and the side of safety relief pipe (2) opening communicates with contactor internal cavity.
4. disappointing explosion-proof high-pressure D.C. contactor according to claim 1, is characterized in that: described contactor main body (1) comprises stem (8), fixed contact (9), moving contact (10), (11) unshakable in one's determination, moving axis (12) and return spring (13); (11) unshakable in one's determination are fixed on moving axis (12) lower end, and return spring (13) is fixed on moving axis (12) middle part, and moving contact (10) is arranged on moving axis (12) top; Stem (8) and fixed contact (9) are fixed into an entirety, are in directly over moving contact (10), two fixed contacts (9) corresponding two moving contact (10) contacts respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529017.1U CN204155861U (en) | 2014-09-15 | 2014-09-15 | A kind of explosion-proof high-pressure D.C. contactor that loses heart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529017.1U CN204155861U (en) | 2014-09-15 | 2014-09-15 | A kind of explosion-proof high-pressure D.C. contactor that loses heart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204155861U true CN204155861U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420529017.1U Active CN204155861U (en) | 2014-09-15 | 2014-09-15 | A kind of explosion-proof high-pressure D.C. contactor that loses heart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204155861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545622A (en) * | 2018-12-14 | 2019-03-29 | 安徽华成电子科技有限公司 | A kind of device in sealing contact explosion-proof early warning structure of losing heart |
-
2014
- 2014-09-15 CN CN201420529017.1U patent/CN204155861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545622A (en) * | 2018-12-14 | 2019-03-29 | 安徽华成电子科技有限公司 | A kind of device in sealing contact explosion-proof early warning structure of losing heart |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |