CN109872914A - A kind of rail traction change high voltage ground switch - Google Patents
A kind of rail traction change high voltage ground switch Download PDFInfo
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- CN109872914A CN109872914A CN201910191356.0A CN201910191356A CN109872914A CN 109872914 A CN109872914 A CN 109872914A CN 201910191356 A CN201910191356 A CN 201910191356A CN 109872914 A CN109872914 A CN 109872914A
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- earthing
- switch
- high voltage
- copper piece
- ground
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Abstract
The present invention relates to high voltage electric equipment field, especially a kind of rail traction becomes high voltage ground switch.Including earthing switch pole, mounting plate, operating mechanism, grounding copper piece, earthing, conductive copper piece, semiconductive shielding layer, semi-conductive buffer layer, insulating layer.Earthing switch pole and operating mechanism are located at the two sides of mounting plate, and operating mechanism is cooperated by the silk tooth in screw rod and earthing, driving earthing linear motion.There is semi-conductive buffer layer between electric conductor and solid insulating material sealing part.The disconnected position in solid insulating material surface, solidification has semiconductive shielding layer, and connect with shell.Electric conductor junction is equipped with uniformer, eliminates local point discharge phenomenon.The present invention reduces the volume of switch；The partial discharge quantity for reducing product improves the service life of product, improves reliability.
Description
Technical field
The present invention relates to high voltage electric equipment field, especially a kind of rail traction becomes high voltage ground switch.
Background technique
With the sustainable development of China's economic, railway transportation plays more and more long-pending in the important means that Chinese transportation transports
The effect of pole, Chinese railway construction will enter golden period, and high-speed rail, motor-car have become the main means of transport of trip.For electrification
The safety and reliability that locomotive provides the traction substation of electric power is also more and more important, with the arrival in high-speed rail epoch, faces
The increasingly vigorous situation of the market demand.Rail traction power supply line carries out sectional power supply, when there is locomotive to pass through, this section of line electricity
Flow larger (electric current as recovery motor-car needs reaches 1000A)；After locomotive passes through, the current spikes of this section of route become smaller,
Even drop to zero.Thus rail traction switchgear is impacted greatly, seriously affects the service life of switchgear.Conventional
Rail traction switchgear is based on gas-insulated, as publication number CN201490613U discloses the railway switch that two-phase is total to case
Cabinet.That there are volumes is big for existing gas-insulated switch, safety is low (there are the risks such as gas leakage, detonation).Solid insulation switch
Equipment has many advantages, such as small in size, no arcing, but in temperature rise control there are difficulty, the heat for needing to solve the generation of high/low temperature alternation is answered
Power problem, failure of insulation caused by preventing insulating layer from cracking.
Summary of the invention
The purpose of the present invention is to propose to a kind of rail tractions to become high voltage ground switch, small in size, highly-safe.
To achieve the above object, the technical scheme is that a kind of rail traction becomes high voltage ground switch, including ground connection
Switch pole, mounting plate, operating mechanism, grounding copper piece, earthing, conductive copper piece, semiconductive shielding layer, semi-conductive buffer layer,
Insulating layer.Earthing switch pole and operating mechanism are located at the two sides of mounting plate, and operating mechanism passes through the silk in screw rod and earthing
Tooth cooperation, driving earthing linear motion.Earthing passes through grounding copper piece, has guide pad on grounding copper piece, guide pad, which protrudes into, leads
Into slot, prevent earthing from screw rod being followed to rotate.Grounding copper piece is connected by ground spring fingertip with earthing.Mounting plate via hole
Inside there is lippacking to wrap up earthing, realizes sealing.Earthing switch pole flange in the bottom face is fluted, there is sealing ring in groove
It is sealed with mounting plate.There is semi-conductive buffer layer between conductive copper piece and solid insulating material sealing part.Solid insulating material table
The disconnected position in face, solidification has semiconductive shielding layer, and connect with mounting plate.
Earthing switch pole is slow including switch connecting pin, ground connection blade carrier, pull rod room, grounding copper piece, conductive copper piece, semiconductive
Rush layer, semiconductive shielding layer, inner cone bottom uniform ring, the equal casting die of earthing knife-switch.Switch connecting pin is divide into upper part and lower part, and centre is copper
Conduct piece, copper conduct piece centre are equipped with counterbore, and counterbore inner wall is fluted, built-in earthing knife-switch spring touch finger, and counterbore is matched with ground connection cutter head
It closes, is connected by earthing knife-switch spring touch finger.2 grooves are provided in conductive copper piece in connectivity port, for place spring touch finger with
Breaker connection.Switch connecting pin is inner conical interface, has inner cone bottom grading ring in inner cone bottom insulation layer, inner cone bottom is equal
Pressure ring can improve the electric field of copper conduct piece Yu inner cone bottom intersection, avoid the occurrence of electric field concentration phenomenon.Conductive copper piece counterbore with
Ground blade carrier connecting portion has the equal casting die of earthing knife-switch, improves the electric field of ground blade carrier and conductive copper piece junction, avoids the occurrence of electric field concentration
Phenomenon.Earthing knife-switch chamber interior walls are equipped with the skirt of indent, increase creepage distance, improve insulating capacity.Two inner cones above and below conductive copper piece
There is semi-conductive buffer layer between the grading ring of the bottom and surface of the equal casting die coupling part of earthing knife-switch, can reduce conductive copper piece temperature rise band
The stress come.Grounding copper piece lower part has ground terminal to pass through insulating layer.Ground terminal has 2 grooves in insulating layer, inside has O-shaped
Circle is fixed with insulating layer.Lip-type seal part, sealing ring, O-ring realize the sealing of pull rod room jointly, prevent moisture and dust from entering
Pull rod room and ground blade carrier, influence dielectric level.
Operating mechanism is using gear set driving screw rod movement.Operating mechanism is equipped with blocking device and tripper.Work as ground connection
When contacting in the counterbore that cutter head moves among conductive copper piece and with earthing knife-switch spring touch finger, blocking device starting.When ground connection cutter head
When moving to grounding copper piece position, tripper starting, releasing is mechanically and electrically interlocked.
Semi-conductive buffer layer main function be eliminate tip, burr etc. existing for electric conductor surface influence shelf depreciation because
Element；Simultaneously in electric conductor adstante febre, the stress because expanding with heat and contract with cold between bring solid insulating material and electric conductor is buffered, is avoided
Generate gap and solid insulating material cracking.The resistance value of semi-conductive buffer layer is between 3000 ohm to 6000 ohm.Partly lead
Electric buffer layer thickness is between 0.5-2 millimeters.The main component of semi-conductive buffer layer is carbon dust and silicon rubber.Semi-conductive buffer layer
Carbon dust is added after mixing using silicon rubber liquid, electric conductor sealing position is sprayed on, then solidifies, then to the buffering after solidification
Layer outer surface sandblasting polishing, cleaning carry out sealing finally by compression moulding die is packed into.
The cold plate of housing body, mechanism's installing plate are 45# steel, and insulating part crosses the anti-vortex of plate stainless steel.
The beneficial effects of the present invention are: 1, using solid insulating material, reduce the volume of switch；2, equal casting die is used
With semi-conductive screen ground plane, the partial discharge quantity of product is reduced；It is slow using semiconductive between electric conductor and fixed sealing material
Layer is rushed, the insulation life of product is improved；3, lippacking, sealing ring, O-ring are applied in combination, and it is dust-proof to improve pull rod room
With the ability of steam, the reliability of product is improved；4, interlock improves the safety in operation of product.
Detailed description of the invention
1 rail traction of attached drawing becomes high voltage ground switch schematic cross-sectional view；
2 earthing switch pole office enlarged diagram of attached drawing.
Drawing reference numeral explanation: 1, earthing switch pole, 1.1, ground connection blade carrier, 1.2, skirt, 2, mounting plate, 2.1, lip type
Sealing element, 2.2, sealing ring, 3, operating mechanism, 3.1, screw rod, 4, grounding copper piece, 4.1, ground terminal, 4.2, O-ring, 4.3,
Guide pad, 4.4, ground spring fingertip, 5, pull rod room, 6, earthing, 6.1, silk tooth, 6.2, guide groove, 7, conductive copper piece, 7.1
Inner cone bottom uniform ring, 7.2, the equal casting die of earthing knife-switch, 7.3, groove 7.4, earthing knife-switch spring touch finger, 8, semiconductive shielding layer, 9, partly lead
Electric buffer layer, 10, insulating layer.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
Embodiment 1
As depicted in figs. 1 and 2, a kind of rail traction becomes high voltage ground switch, including earthing switch pole 1, mounting plate 2, actuating
Mechanism 3, grounding copper piece 4, earthing 6, conductive copper piece 7, semiconductive shielding layer 8, semi-conductive buffer layer 9, insulating layer 10.Ground connection is opened
It closes pole 1 and operating mechanism 3 is located at the two sides of mounting plate 2, operating mechanism 3 passes through the silk tooth 6.1 in screw rod 3.1 and earthing 6
Cooperation, driving earthing linear motion.Earthing 6 passes through grounding copper piece 4, has guide pad 4.3, guide pad 4.3 on grounding copper piece 4
It protrudes into guide groove 6.2, prevents earthing from screw rod being followed to rotate.Grounding copper piece 4 passes through ground spring fingertip 4.4 and earthing 6
Conducting.There is lippacking 2.1 to wrap up earthing in mounting plate via hole, realizes sealing.Earthing switch pole flange in the bottom face has
Groove has in groove sealing ring 2.2 and mounting plate to seal.Have between conductive copper piece 7 and solid insulating material sealing part and partly leads
Electric buffer layer 9.The disconnected position in solid insulating material surface, solidification has semiconductive shielding layer 8, and connect with mounting plate.
Earthing switch pole 1 include switch connecting pin, ground connection blade carrier 1.1, pull rod room 5, grounding copper piece 4, conductive copper piece 7,
Semi-conductive buffer layer 9, semiconductive shielding layer 8, inner cone bottom uniform ring 7.1, the equal casting die 7.2 of earthing knife-switch.Switch connecting pin is divided into
Lower two parts, centre are copper conduct pieces 7, are equipped with counterbore, counterbore inner wall fluted 7.3, built-in earthing knife-switch spring among copper conduct piece 7
Fingertip 7.4, counterbore and ground connection cutter head cooperation, it is logical by 7.4 guidance of earthing knife-switch spring touching.It is provided in conductive copper piece in connectivity port
2 grooves 7.3, connect for placing spring touch finger with breaker.Switch connecting pin is inner conical interface, inner cone bottom insulation layer
Inside there is inner cone bottom grading ring 7.1, inner cone bottom grading ring 7.1 can improve the electric field of copper conduct piece Yu inner cone bottom intersection,
Avoid the occurrence of electric field concentration phenomenon.Conductive copper piece counterbore and ground blade carrier connecting portion have an equal casting die 7.2 of earthing knife-switch, improve ground blade carrier with
The electric field of conductive copper piece junction, avoids the occurrence of electric field concentration phenomenon.Blade carrier 1.1 inner wall in ground is equipped with the skirt 1.2 of indent, increases
Creepage distance improves insulating capacity.Between the two inner cone bottom grading rings and equal casting die coupling part of earthing knife-switch above and below conductive copper piece
Surface have semi-conductive buffer layer 9, can reduce conductive copper piece temperature rise bring stress.Ground terminal is arranged at grounding copper piece lower part
4.1 pass through insulating layer 10.Ground terminal 4.1 has 2 grooves in insulating layer, inside has O-ring 4.2 to fix with insulating layer.Lip type
Sealing element 2.1, sealing ring 2.2, O-ring 4.2 jointly realize pull rod room 5 sealing, prevent moisture and dust enter pull rod room and
Ground blade carrier, influences dielectric level.
Operating mechanism 3 is moved using gear set driving screw rod 3.1.Operating mechanism is equipped with blocking device and tripper.When
When contacting in the counterbore that ground connection cutter head moves among conductive copper piece and with earthing knife-switch spring touch finger, blocking device starting.Work as ground connection
When cutter head moves to grounding copper piece position, tripper starting, releasing is mechanically and electrically interlocked.
Semi-conductive buffer layer main function be eliminate tip, burr etc. existing for electric conductor surface influence shelf depreciation because
Element；Simultaneously in electric conductor adstante febre, the stress because expanding with heat and contract with cold between bring solid insulating material and electric conductor is buffered, is avoided
Generate gap and solid insulating material cracking.The resistance value of semi-conductive buffer layer is between 3000 ohm to 6000 ohm.Partly lead
Electric buffer layer thickness is between 0.5-2 millimeters.The main component of semi-conductive buffer layer is carbon dust and silicon rubber.Semi-conductive buffer layer
Carbon dust is added after mixing using silicon rubber liquid, electric conductor sealing position is sprayed on, then solidifies, then to the buffering after solidification
Layer outer surface sandblasting polishing, cleaning carry out sealing finally by compression moulding die is packed into.
The cold plate of housing body, mechanism's installing plate are 45# steel, and insulating part crosses the anti-vortex of plate stainless steel.
The beneficial effects of the present invention are: 1, using solid insulating material, reduce the volume of switch；2, equal casting die is used
With semi-conductive screen ground plane, the partial discharge quantity of product is reduced；It is slow using semiconductive between electric conductor and fixed sealing material
Layer is rushed, the insulation life of product is improved；3, lippacking, sealing ring, O-ring are applied in combination, it is dust-proof to improve pull rod room
With the ability of steam, the reliability of product is improved；4, interlock improves the safety in operation of product.
Embodiment 2
Switch connecting pin is male-tapered interface, is equipped with outer cone flange.The electrification that can play the role of pressure is equipped in outer cone flange
Sensor.Solid insulating material selects epoxy resin.Equal casting die selects the stainless (steel) wire production of 0.5 millimeters thick.Remaining is the same as implementation
Example 1.
Embodiment 3
Solid insulating material selects ethylene propylene diene rubber.Equal casting die selects carbon fiber to pass through mold processing and fabricating.Remaining is the same as implementation
Example 1.
Claims (7)
1. a kind of rail traction becomes high voltage ground switch, including earthing switch pole (1), mounting plate (2), operating mechanism (3), connect
Ground copper piece (4), earthing (6), conductive copper piece (7), semiconductive shielding layer (8), semi-conductive buffer layer (9), insulating layer (10), connect
Ground switch pole (1) and operating mechanism (3) are located at the two sides of mounting plate (2), it is characterised in that: operating mechanism (3) passes through screw rod
(3.1) cooperate with the silk tooth (6.1) in earthing (6)；Earthing (6) passes through grounding copper piece (4), and grounding copper piece is led on (4)
To block (4.3), guide pad (4.3) is protruded into guide groove (6.2), and grounding copper piece (4) passes through ground spring fingertip (4.4) and ground connection
Knife (6) conducting；There are lippacking (2.1) to wrap up earthing in mounting plate (2) via hole；Earthing switch pole flange in the bottom face has
Groove has sealing ring (2.2) in groove；The disconnected position in solid insulating material surface, solidification have semiconductive shielding layer (8).
2. rail traction as described in claim 1 becomes high voltage ground switch, it is characterised in that: on the having of earthing switch pole (1)
Under (2) a switch connecting pin, switching among connecting pin is copper conduct piece (7), counterbore is equipped among copper conduct piece (7), in counterbore
Wall is fluted (7.3), built-in earthing knife-switch spring touch finger (7.4), is provided with 2 grooves (7.3) in the conductive copper piece in connectivity port, opens
Pass connecting pin is inner conical interface, has inner cone bottom grading ring (7.1) in inner cone bottom insulation layer；In earthing switch pole (1)
There are pull rod room (5) and ground blade carrier (1.1).
3. rail traction as claimed in claim 2 becomes high voltage ground switch, it is characterised in that: blade carrier (1.1) inner wall in ground is equipped with interior
Recessed skirt (1.2), conductive copper piece counterbore and ground connection ground blade carrier (1.1) connecting portion have the equal casting die of earthing knife-switch (7.2).
4. rail traction as claimed in claim 3 becomes high voltage ground switch, it is characterised in that: the equal casting die of earthing knife-switch (7.2) material is
Stainless steel or carbon fiber.
5. rail traction as described in claim 1 becomes high voltage ground switch, it is characterised in that: two inner cone bottoms above and below conductive copper piece
Between the portion's grading ring and surface of the equal casting die coupling part of earthing knife-switch has semi-conductive buffer layer (9).
6. rail traction as claimed in claim 5 becomes high voltage ground switch, it is characterised in that: the main component of semi-conductive buffer layer
For carbon dust and silicon rubber, the resistance value of semi-conductive buffer layer (9) is between 3000 ohm to 6000 ohm, semi-conductive buffer thickness
Degree is between 0.5-2 millimeters.
7. rail traction as claimed in claim 6 becomes high voltage ground switch, it is characterised in that: semi-conductive buffer layer uses silicon rubber
Liquid adds carbon dust after mixing, is sprayed on electric conductor sealing position, then solidifies, then sprays to the buffer layer outer surface after solidification
Sand polishing, cleaning carry out sealing finally by compression moulding die is packed into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191356.0A CN109872914B (en) | 2019-03-14 | 2019-03-14 | Railway traction becomes high pressure and connects switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191356.0A CN109872914B (en) | 2019-03-14 | 2019-03-14 | Railway traction becomes high pressure and connects switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109872914A true CN109872914A (en) | 2019-06-11 |
| CN109872914B CN109872914B (en) | 2020-09-18 |
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ID=66920424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910191356.0A Active CN109872914B (en) | 2019-03-14 | 2019-03-14 | Railway traction becomes high pressure and connects switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109872914B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623231A (en) * | 2012-03-23 | 2012-08-01 | 中能电气（福清）有限公司 | Solid-sealed polar column unit for solid insulation switch equipment |
| CN108172446A (en) * | 2018-01-06 | 2018-06-15 | 北海银河开关设备有限公司 | A kind of earthing switch pole |
| CN108172447A (en) * | 2018-01-06 | 2018-06-15 | 北海银河开关设备有限公司 | A kind of electric locomotive earthing switch |
| CN209561266U (en) * | 2019-03-14 | 2019-10-29 | 北海银河开关设备有限公司 | A kind of rail traction change high voltage ground switch |
-
2019
- 2019-03-14 CN CN201910191356.0A patent/CN109872914B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623231A (en) * | 2012-03-23 | 2012-08-01 | 中能电气（福清）有限公司 | Solid-sealed polar column unit for solid insulation switch equipment |
| CN108172446A (en) * | 2018-01-06 | 2018-06-15 | 北海银河开关设备有限公司 | A kind of earthing switch pole |
| CN108172447A (en) * | 2018-01-06 | 2018-06-15 | 北海银河开关设备有限公司 | A kind of electric locomotive earthing switch |
| CN209561266U (en) * | 2019-03-14 | 2019-10-29 | 北海银河开关设备有限公司 | A kind of rail traction change high voltage ground switch |
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| Publication number | Publication date |
|---|---|
| CN109872914B (en) | 2020-09-18 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210419 Address after: 536000 2 / F and 3 / F, information center building, Yinhe software science and Technology Park, 11 Tibet Road, Beihai City, Guangxi Zhuang Autonomous Region Patentee after: GUANGXI YINHE DECOM ELECTRIC Co.,Ltd. Address before: No. 11 Tibet Road, Haicheng District, Beihai City, Guangxi Zhuang Autonomous Region Patentee before: BEIHAI GALAXY SWITCH DEVICES Co.,Ltd. |
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Effective date of registration: 20210715 Address after: 225000 in Zhongman power Jiangsu Co., Ltd., Zhongman Road, high tech Development Zone, Yangzhou City, Jiangsu Province Patentee after: Jiangsu deyidikang Technology Co.,Ltd. Address before: 536000 2 / F and 3 / F, information center building, Yinhe software science and Technology Park, 11 Tibet Road, Beihai City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI YINHE DECOM ELECTRIC Co.,Ltd. |
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Effective date of registration: 20211213 Address after: 536000 2 / F and 3 / F, information center building, Yinhe software science and Technology Park, 11 Tibet Road, Beihai City, Guangxi Zhuang Autonomous Region Patentee after: Dikang Electric Co.,Ltd. Address before: 225000 in Zhongman power Jiangsu Co., Ltd., Zhongman Road, high tech Development Zone, Yangzhou City, Jiangsu Province Patentee before: Jiangsu deyidikang Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |