CN105185613A - Automatic grounding switch - Google Patents
Automatic grounding switch Download PDFInfo
- Publication number
- CN105185613A CN105185613A CN201510468466.9A CN201510468466A CN105185613A CN 105185613 A CN105185613 A CN 105185613A CN 201510468466 A CN201510468466 A CN 201510468466A CN 105185613 A CN105185613 A CN 105185613A
- Authority
- CN
- China
- Prior art keywords
- casing
- cylinder
- earth rod
- grounding switch
- automatic grounding
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Abstract
The present invention discloses an automatic grounding switch. The automatic grounding switch comprises a casing which is provided with a slot used for allowing a ground rod to pass through. One end of the ground rod is located at the exterior of the casing, and the other end of the ground rod is located at the interior of the casing. A rotating shaft, installed at the inner wall of the casing through a bearing and a bearing pedestal, passes through the ground rod located at the interior of the casing, and has a tip connected with an expansion link of a cylinder through an interconnecting piece, and the ground rod may be rotated around the rotating shaft driven by the expansion link of the cylinder. A ground lead is led out from the ground rod. The casing is also provided with an intake pipe connected with the cylinder and an entrance hole. The ground rod provided by the invention may automatically complete accurate contact with a test device with the driving of the cylinder so that the grounding of the test device without manual operation is realized. Moreover, the automatic grounding switch may avoid that a strong current passes through a human body in the case of destruction of insulation or unforeseen circumstances when metal cases are electrically charged so that the personal safety is ensured.
Description
Technical field
The present invention relates to earthing device technical field, particularly relate to a kind of automatic grounding switch.
Background technology
Power frequency withstand test is the test of checking insulation of electrical installation tolerance power-frequency voltage ability to function.During test, by regulation, test specimen is accessed test loop, progressively the rated power frequency withstand voltage value that specify of boosted voltage to standard, maintenance 1min, is then depressured to zero rapidly, equably.In official hour, test specimen insulation punctures or dielectric surface flashover, then think and have passed this test.Industrial frequency AC voltage that withstand voltage test is executed exceeds electric equipment rated operational voltage, a lot of insulation defect can be found by this test, especially more effective to local defect, its shortcoming possible bring certain damage when withstand voltage test to insulation, so after the project such as insulation resistance, dielectric dissipation factor pass the test, just industrial frequency AC withstand voltage test should can be carried out.
Existing earth rod is artificial, each Insulation Test terminates rear operating personnel with the manual ground connection of earth rod, cumbersome, operating of contacts experimental facilities sometimes, line combination switch with ground can damage electric equipment and destroy the stable of electrical network, just can cause serious pernicious electric thing cause.Artificial ground forgets ground connection sometimes, if experimental facilities casing insulation has problem just may cause electric shock, personal injury accident occurs.
Summary of the invention
Object of the present invention is exactly to solve the problem, a kind of automatic grounding switch is provided, utilize mechanical interlock mechanism to realize the metal shell ground connection of electrical equipment, when preventing that metal shell is charged under insulation damages or fortuitous event, heavy current is by human body, to ensure personal safety.
To achieve these goals, the present invention adopts following technical scheme:
Automatic grounding switch, comprise casing, described casing is provided with a fluting and passes for earth rod, one end of described earth rod is positioned at the outside of casing, one end is positioned at the inside of casing, and through there being rotating shaft on the earth rod being positioned at box house, rotating shaft is arranged on the inwall of casing by bearing and bearing pedestal, and termination is connected with the expansion link of cylinder by link, under the drive of Telescopic-cylinder bar, earth rod can around axis of rotation; Described earth rod is drawn an earth connection; Described casing is also provided with the air inlet pipe be connected with cylinder and entrance hole.Fluting is for providing space when earth rod rotates.The earth connection that earth rod is drawn in use can earthing bar directly in junction chamber, is communicated with, grounded circuit is communicated with ground network.
The pipeline that described air inlet pipe is positioned at casing is connected with two-bit triplet electromagnetically operated valve, two output ports of two-bit triplet electromagnetically operated valve connect front end airflow pipe and rear end air inlet pipe respectively, described front end airflow pipe is communicated with the front end airflow hole on cylinder, and rear end air inlet pipe is communicated with the rear end air admission hole on cylinder.The inflation of front end airflow pipe can realize the contraction of expansion link, if can to realize promoting expansion link protruding for the inflation of rear end air inlet pipe, so just achieve and drives earth rod around axis of rotation.
The electric part of described two-bit triplet electromagnetically operated valve is connected with out button and closes button.When bringing into use this earthed switch, earth rod is tilted to the right, and open after button is pressed and front end airflow pipe is inflated to the front end of cylinder, rear end air inlet pipe is given vent to anger, and Telescopic-cylinder bar is regained and driven earth rod to turn left to contact with experimental rig.
Also be provided with the travel switch of restriction earth rod position in described casing, described travel switch connects the electric part of described three-way magnetic valve.When Telescopic-cylinder bar is regained and driven earth rod to turn left, the size of earth rod rotation amplitude can be limited by travel switch.
One end that described earth rod is positioned at casing is connected with copper bar by screwed pipe, and described copper bar is connected with the expansion link of cylinder.By screwed pipe, earth rod is connected with copper bar, whether can be controlled the position of earth rod like this by the contact of copper bar and travel switch.After copper bar touches the switch contact of travel switch, travel switch sends signal to three-way magnetic valve, changes cut-offfing of three-way magnetic valve and front end airflow pipe is no longer inflated, the position (being tilted to the left) when now earth rod is located in use.
When test complete do not need ground connection time, press ShiShimonoseki button, three-way magnetic valve makes the inflation of rear end air inlet pipe, and front end airflow pipe is given vent to anger, and expansion link is protruding, drives earth rod to get back to initial position.
Described earth rod outside is provided with insulating sleeve.
Described air inlet pipe is connected with air compressor machine.By air compressor machine for air inlet pipe provides source of the gas.
Beneficial effect of the present invention:
Earth rod of the present invention automatically realizes contacting with the accurate of testing equipment under the drive of cylinder, realizes the ground connection of testing equipment, does not need manual operation ground connection.When can prevent that metal shell is charged under insulation damages or fortuitous event, heavy current is by human body, can ensure personal safety.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein, 1. earth connection, 2. earth rod, 3. thread bush, 4. cylinder, 5. copper bar, 6. travel switch, 7. casing, 8 two-bit triplet electromagnetically operated valves.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, automatic grounding switch, comprise casing 7, casing 7 is provided with a fluting and passes for earth rod 2, one end of earth rod 2 is positioned at the outside of casing 7, one end is positioned at the inside of casing 7, the earth rod 2 being positioned at casing 7 inside is provided with two through holes, the through hole on top is through rotating shaft, the through hole of bottom is connected with screwed pipe 3, rotating shaft is arranged on the inwall of casing 7 by bearing and bearing pedestal, and termination is connected by the expansion link of link with cylinder 4, and under the drive of cylinder 4 expansion link, earth rod 2 can around axis of rotation; In the present embodiment, screwed pipe 3 is also connected with copper bar 5, and copper bar 5 connects the expansion link of cylinder 4.Earth rod 2 is drawn an earth connection 1; Casing 7 is provided with the air inlet pipe and entrance hole that are connected with cylinder.Fluting is for providing space when earth rod 2 rotates.The earth connection 2 that earth rod 2 is drawn in use can earthing bar directly in junction chamber, is communicated with, grounded circuit is communicated with ground network.
The pipeline that air inlet pipe is positioned at casing 7 is connected with two-bit triplet electromagnetically operated valve 8, two output ports of two-bit triplet electromagnetically operated valve 8 connect front end airflow pipe and rear end air inlet pipe respectively, front end airflow pipe is communicated with the front end airflow hole on cylinder 4, and rear end air inlet pipe is communicated with the rear end air admission hole on cylinder.The inflation of front end airflow pipe can realize the contraction of expansion link, if can to realize promoting expansion link protruding for the inflation of rear end air inlet pipe, so just achieve and drives earth rod 2 around axis of rotation.
The electric part of two-bit triplet electromagnetically operated valve 8 is connected with out button and closes button, drives button and closes the outer surface that button is positioned at casing 7.When bringing into use this earthed switch, earth rod original position is tilted to the right, and open and to make front end airflow pipe to the inflation of the front end of cylinder 4 after button is pressed, rear end air inlet pipe is given vent to anger, and Telescopic-cylinder bar is regained and driven earth rod 2 to turn left to contact with experimental rig.
The travel switch 6 of restriction earth rod 2 position is also provided with, the electric part of travel switch 6 connecting tee electromagnetically operated valve 8 in casing.When cylinder 4 expansion link is regained and driven earth rod 2 to turn left, the size of earth rod 2 rotation amplitude can be limited by travel switch 6.
One end that earth rod 2 is positioned at casing 7 is connected with copper bar 5 by screwed pipe, and copper bar 5 is connected with the expansion link of cylinder 4.Concrete travel switch 6 should be positioned at the right side of casing 7 inner copper line 5, and distance copper bar 5 has certain distance, can move to the right for copper bar 5.After copper bar 5 touches the switch contact of travel switch 6, travel switch 6 sends signal to three-way magnetic valve 8, changes cut-offfing of three-way magnetic valve 8 and front end airflow pipe is no longer inflated, the position (being tilted to the left) when now earth rod 2 is located in use.
When test complete do not need ground connection time, press ShiShimonoseki button, three-way magnetic valve makes the inflation of rear end air inlet pipe, and front end airflow pipe is given vent to anger, and expansion link is protruding, drives earth rod 2 to get back to initial position.
Earth rod 2 outside is provided with insulating sleeve.Air inlet pipe is connected with air compressor machine, by air compressor machine for air inlet pipe provides source of the gas.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (7)
1. automatic grounding switch, it is characterized in that, comprise casing, described casing is provided with a fluting and passes for earth rod, and one end of described earth rod is positioned at the outside of casing, and one end is positioned at the inside of casing, through there being rotating shaft on the earth rod being positioned at box house, rotating shaft is arranged on the inwall of casing by bearing and bearing pedestal, and termination is connected with the expansion link of cylinder by link, and under the drive of Telescopic-cylinder bar, earth rod can around axis of rotation; Described earth rod is drawn an earth connection; Described casing is also provided with the air inlet pipe be connected with cylinder and entrance hole.
2. automatic grounding switch as claimed in claim 1, it is characterized in that, the pipeline that described air inlet pipe is positioned at casing is connected with two-bit triplet electromagnetically operated valve, two output ports of two-bit triplet electromagnetically operated valve connect front end airflow pipe and rear end air inlet pipe respectively, described front end airflow pipe is communicated with the front end airflow hole on cylinder, and rear end air inlet pipe is communicated with the rear end air admission hole on cylinder.
3. automatic grounding switch as claimed in claim 2, is characterized in that, the electric part of described two-bit triplet electromagnetically operated valve is connected with out button and closes button.
4. automatic grounding switch as claimed in claim 2, is characterized in that, be also provided with the travel switch of restriction earth rod position in described casing, described travel switch connects the electric part of described three-way magnetic valve.
5. automatic grounding switch as claimed in claim 4, it is characterized in that, one end that described earth rod is positioned at casing is connected with copper bar by screwed pipe, and described copper bar is connected with the expansion link of cylinder.
6. automatic grounding switch as described in claim 1 or 4 or 5, it is characterized in that, described earth rod outside is provided with insulating sleeve.
7. automatic grounding switch as claimed in claim 1, it is characterized in that, described air inlet pipe is connected with air compressor machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510468466.9A CN105185613B (en) | 2015-07-31 | 2015-07-31 | Automatic grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510468466.9A CN105185613B (en) | 2015-07-31 | 2015-07-31 | Automatic grounding switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105185613A true CN105185613A (en) | 2015-12-23 |
| CN105185613B CN105185613B (en) | 2017-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510468466.9A Active CN105185613B (en) | 2015-07-31 | 2015-07-31 | Automatic grounding switch |
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| Country | Link |
|---|---|
| CN (1) | CN105185613B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510673A (en) * | 2009-02-13 | 2009-08-19 | 江苏雷宇高电压设备有限公司 | Pneumatic grounding device |
| CN203071247U (en) * | 2013-01-25 | 2013-07-17 | 厦门国毅科技有限公司 | High voltage automatic grounding device |
| CN203536277U (en) * | 2013-10-31 | 2014-04-09 | 国家电网公司 | A valve hall grounding switch |
| CN203895761U (en) * | 2014-06-18 | 2014-10-22 | 河南森源电气股份有限公司 | Grounding device of SF6 inflatable ring main unit |
| CN104752935A (en) * | 2013-12-27 | 2015-07-01 | 益和电气集团股份有限公司 | Novel automatic grounding device |
| CN204577303U (en) * | 2015-04-16 | 2015-08-19 | 北京赛德高科铁道电气科技有限责任公司 | A kind of motor train unit earthed switch |
-
2015
- 2015-07-31 CN CN201510468466.9A patent/CN105185613B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510673A (en) * | 2009-02-13 | 2009-08-19 | 江苏雷宇高电压设备有限公司 | Pneumatic grounding device |
| CN203071247U (en) * | 2013-01-25 | 2013-07-17 | 厦门国毅科技有限公司 | High voltage automatic grounding device |
| CN203536277U (en) * | 2013-10-31 | 2014-04-09 | 国家电网公司 | A valve hall grounding switch |
| CN104752935A (en) * | 2013-12-27 | 2015-07-01 | 益和电气集团股份有限公司 | Novel automatic grounding device |
| CN203895761U (en) * | 2014-06-18 | 2014-10-22 | 河南森源电气股份有限公司 | Grounding device of SF6 inflatable ring main unit |
| CN204577303U (en) * | 2015-04-16 | 2015-08-19 | 北京赛德高科铁道电气科技有限责任公司 | A kind of motor train unit earthed switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105185613B (en) | 2017-12-05 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Automatic grounding switch Effective date of registration: 20190219 Granted publication date: 20171205 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: YIHE ELECTRIC GROUP Co.,Ltd. Registration number: 2019370010018 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: 266510 No. 717 West Huaihe Road, Huangdao District, Shandong, Qingdao Patentee after: Qingdao Yihe Electric Group Co.,Ltd. Address before: 266500 No. 38, Qinhuangdao Road, Huangdao District, Shandong, Qingdao Patentee before: YIHE ELECTRIC GROUP Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230406 Granted publication date: 20171205 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: YIHE ELECTRIC GROUP Co.,Ltd. Registration number: 2019370010018 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |