CN201639271U - Time-delay overload short-circuit protector - Google Patents
Time-delay overload short-circuit protector Download PDFInfo
- Publication number
- CN201639271U CN201639271U CN2010201523846U CN201020152384U CN201639271U CN 201639271 U CN201639271 U CN 201639271U CN 2010201523846 U CN2010201523846 U CN 2010201523846U CN 201020152384 U CN201020152384 U CN 201020152384U CN 201639271 U CN201639271 U CN 201639271U
- Authority
- CN
- China
- Prior art keywords
- switch
- short
- phase alternating
- alternating current
- time
- 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.)
- Expired - Fee Related
Links
- 230000001012 protector Effects 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 11
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 235000008645 Chenopodium bonus henricus Nutrition 0.000 description 1
- 244000138502 Chenopodium bonus henricus Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Elevator Control (AREA)
Abstract
The utility model discloses a time-delay overload short-circuit protector for control of electric equipment. An incoming line connecting terminal is communicated with three-phase alternating current; an outgoing line connecting terminal is connected with a three-phase alternating current motor; a protective switch is arranged in a shell; the incoming line connecting terminal is communicated with a mercury switch movable contact through winding by using leads and connected with an electromagnet through the protective switch by using leads; a spring is sleeved on a lifting block; a lifting block connection board is connected with the movable contact through a thread structure; the movable contact is inserted into the mercury switch provided with conductive liquid; the conductive liquid in the switch is mercury; and a cover plate is provided with a baffle block. When the three-phase alternating current is communicated with the incoming line connecting terminal, the electromagnet pulls down the lifting block, the lifting block raises and the power source is switched off. The utility model can realize the time delay protection of the motor short-circuit, has simpler structure, stability, reliability, no-oxidization of contact, long service life and low cost and can be suitable for various occasions.
Description
Technical field
The utility model relates to a kind of short-circuit protector in the electric equipment control field, especially for the time-delay overload and short-circuit protector of protection motor.
Background technology
Short-circuit protector commonly used does not have delay function, when running into power-supply fluctuation, and often misoperation, particularly when this short-circuit protector was used on the heavy-duty motor, the instantaneous overload of motor also can cause its misoperation.Another kind of intelligence time-delay overload and short-circuit protector can be provided with guard time and overload power, but this protector complicated operation, the cost height, and fragile, be not suitable for being installed in outdoor.
Summary of the invention
Cause motor to damage for solving motor short circuit meeting; the instantaneous overload of motor influences problems such as machine operation instability; goal of the invention of the present utility model is to provide a kind of time-delay overload and short-circuit protector, to realize effectively ensureing the normal purpose of safe operation of motor under various environment.
For achieving the above object; the technical solution of the utility model is: inlet wire binding post and three-phase alternating current are connected; the outlet binding post connects three phase alternating current motor; protection switch is housed in the shell; protection switch is the overtemperature prote switch; the inlet wire binding post is connected by the moving contact of winding and mercoid switch with lead; the inlet wire binding post links to each other with electromagnet by protection switch with lead; spring housing is on elevator; on the connecting plate of elevator moving contact is housed, the top of moving contact and the connecting plate of elevator are for being threaded, and moving contact inserts and is equipped with in the mercoid switch of conductive liquid; conductive liquid in the mercoid switch is a mercury, and block is housed on the cover plate.
When three-phase alternating current and the connection of inlet wire binding post, under the normal temperature state, the overtemperature prote switch conduction; the electromagnet energising, electromagnet is left behind elevator, the moving contact of inlet wire water receiving silver switch; mercury in moving contact touches mercoid switch, the three-phase alternating-current supply conducting.When short circuit appears in load, the winding of overtemperature prote switch begins heating, reaches the upper limit of its design temperature when the temperature of overtemperature prote switch; the overtemperature prote switch disconnects electromagnet power supply, and under the active force of spring, elevator rises; moving contact separates with mercury in the mercoid switch, and power supply disconnects.When instantaneous overload appears in motor, winding gives the underheat of overtemperature prote switch to reach the upper limit of its design temperature, and the overtemperature prote switch can not disconnect, and has avoided misoperation; When short circuit appears in motor, winding heating overtemperature prote switch, temperature reaches its design temperature upper limit; the overtemperature prote switch disconnects, the electromagnet outage, and mercoid switch disconnects; three-phase alternating-current supply disconnects, and winding heating time is exactly the time of delaying time after the short circuit, can realize short circuit delay protection function.
The utility model is compared with existing short-circuit protector, can realize motor short circuit delay protection, and structure is simpler, and is reliable and stable, the contact non-oxidation, and long service life, with low cost, applicable to various occasions.
Description of drawings
Fig. 1 is a construction profile vertical view of the present utility model;
Fig. 2 is figure
The A-A cutaway view;
Fig. 3 is a construction profile front view of the present utility model;
Fig. 4 is the B-B cutaway view of Fig. 3;
Fig. 5 is an electric sketch of the present utility model.
Embodiment
As Fig. 1; Fig. 2; Fig. 3; shown in Figure 4; inlet wire binding post 11 is connected with three-phase alternating current; outlet binding post 10 connects three phase alternating current motor; two protection switches 9 are housed in the shell 3; protection switch 9 is the overtemperature prote switch; inlet wire binding post 11 usefulness leads are connected by the winding 12 and the moving contact 4 of mercoid switch; inlet wire binding post 11 usefulness leads link to each other with electromagnet 7 by protection switch 9; spring 6 is enclosed within on the elevator 2; moving contact 4 is housed on the connecting plate of elevator 2; the connecting plate of the top of moving contact 4 and elevator 2 is for being threaded; can adjust the contact area of mercurys in moving contact 4 and the mercoid switch 5; moving contact 4 inserts and is equipped with in the mercoid switch 5 of conductive liquid, and the conductive liquid in the mercoid switch 5 is a mercury, and block 8 is housed on the cover plate 1.
All parts of the present utility model are installed in the shell 3; cover plate 1 is arranged on the shell 3; when inlet wire binding post 11 connection three-phase alternating-current supplies, two overtemperature prote switches 9 constitute series circuits with electromagnet 7, under the normal temperature state; 9 conductings of overtemperature prote switch; elevator 2 is left behind in electromagnet 7 adhesives, drives mercoid switch moving contact 4 and moves down; mercury in moving contact 4 and the mercoid switch 5 contact, the connection three-phase alternating-current supply.When circuit is short-circuited; three-phase alternating current begins heating by the winding 12 on overtemperature prote switch 9; protection switch 9 disconnects; electromagnet 7 outages, under the effect of the spring 6 between electromagnet 7 and the elevator 2, elevator 2 is rebounded; driving mercoid switch moving contact 4 moves up; moving contact 4 disengages with mercury, and three-phase alternating current disconnects, and has so just played the effect of short-circuit protection.For preventing that spring from ejecting elevator 2, design has 3 blocks 8 on the cover plate 1.
As shown in Figure 5; JP1 is an inlet wire binding post 11; connect three-phase alternating current; wherein the winding on overtemperature prote switch 9 12 and sequence number are 5 mercoid switch SW1 to two-phase respectively; SW2; the moving contact of SW3 connects; mercoid switch SW1; SW2; the fixed contact of SW3 links to each other with outlet binding post 10; electromagnet 7 is connected on the two-phase input terminal 11 of three-phase alternating current after sealing in two overtemperature prote switches 9; when the load overload; during at least one phase line short circuit, winding 12 heatings of overtemperature prote switch 9, two protection switches 9 that seal in electromagnet 7 disconnect; electromagnet 7 outages; mercoid switch 5 is turned off, and three-phase alternating current is disconnected, and has so just played the effect of short-circuit protection.
Claims (4)
- One kind the time-delay overload and short-circuit protector; it is characterized in that: inlet wire binding post (11) is connected with three-phase alternating current; outlet binding post (10) connects three phase alternating current motor; protection switch (9) is housed in the shell (3); inlet wire binding post (11) is connected by the winding (12) and the moving contact (4) of mercoid switch (5) with lead; inlet wire binding post (11) links to each other with electromagnet (7) by protection switch (9) with lead; spring (6) is enclosed within on the elevator (2); moving contact (4) is housed on the connecting plate of elevator (2); moving contact (4) inserts and is equipped with in the mercoid switch (5) of conductive liquid, and block (8) is housed on the cover plate (1).
- 2. time-delay overload and short-circuit protector according to claim 1 is characterized in that: protection switch (9) is the overtemperature prote switch.
- 3. time-delay overload and short-circuit protector according to claim 1 is characterized in that: the conductive liquid in the mercoid switch (5) is a mercury.
- 4. time-delay overload and short-circuit protector according to claim 1 is characterized in that: the connecting plate of the top of moving contact (4) and elevator (2) is for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201523846U CN201639271U (en) | 2010-03-31 | 2010-03-31 | Time-delay overload short-circuit protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201523846U CN201639271U (en) | 2010-03-31 | 2010-03-31 | Time-delay overload short-circuit protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639271U true CN201639271U (en) | 2010-11-17 |
Family
ID=43083777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201523846U Expired - Fee Related CN201639271U (en) | 2010-03-31 | 2010-03-31 | Time-delay overload short-circuit protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201639271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645581A (en) * | 2020-06-16 | 2020-09-11 | 摩登汽车有限公司 | Lifting cup stand for automobile |
-
2010
- 2010-03-31 CN CN2010201523846U patent/CN201639271U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645581A (en) * | 2020-06-16 | 2020-09-11 | 摩登汽车有限公司 | Lifting cup stand for automobile |
| CN111645581B (en) * | 2020-06-16 | 2022-01-25 | 摩登汽车有限公司 | Lifting cup stand for automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIANGYANG CHONGYA ELECTRIC EQUIPMENT CO., LTD. Free format text: FORMER OWNER: BU CHUNGUO Effective date: 20120925 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441100 XIANGFAN, HUBEI PROVINCE TO: 441104 XIANGFAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120925 Address after: Xiangfan City, Hubei province 441104 Xiang Wan Zhen Zhang Wan Cun, Qu Zhang three groups Patentee after: Xiangyang Chongya Electrical Appliance Co., Ltd. Address before: 441100 Meteorological Bureau of Hongxing Road, Xiangyang District, Hubei, Xiangfan Patentee before: Bo Chunguo |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |