CN209981884U - Flange connecting device of high-voltage switch equipment - Google Patents
Flange connecting device of high-voltage switch equipment Download PDFInfo
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- CN209981884U CN209981884U CN201920939264.1U CN201920939264U CN209981884U CN 209981884 U CN209981884 U CN 209981884U CN 201920939264 U CN201920939264 U CN 201920939264U CN 209981884 U CN209981884 U CN 209981884U
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Abstract
The utility model belongs to the technical field of high-voltage electrical equipment and specifically relates to an electrified locomotive high tension switchgear flange connection device. The device comprises a sleeve and an isolating switch, wherein a copper conductive piece is arranged in the middle of the sleeve, a sleeve insulating layer is arranged outside the copper conductive piece, a sleeve semi-conductive shielding layer is arranged outside the sleeve insulating layer, and an outer flange is arranged in the sleeve semi-conductive shielding layer. The insulating layer of the downward flange of the sleeve is of an outer cone structure, and the insulating layer of the corresponding isolating switch flange is of an inner cone structure. An inner flange is arranged in the semi-conductive shielding layer of the isolating switch. The outer flange and the inner flange are made of stainless steel materials through welding. The stainless steel outer flange and the stainless steel inner flange are added in the flange, so that the strength of the connecting flange is enhanced; the partial discharge capacity of the product is reduced, and the service life of the product is prolonged.
Description
Technical Field
The utility model belongs to the technical field of high-voltage electrical equipment and specifically relates to a flange joint device of high tension switchgear flange joint device.
Background
With the continuous development of Chinese economy, important means of railway transportation in Chinese transportation play more and more positive roles, the construction of Chinese railways enters the golden period, and high-speed rails and motor cars become main transportation tools for trips. As the distribution equipment of the electric locomotive comes, with the arrival of the high-speed rail era, the market demand is increasingly vigorous. The conventional switch equipment mainly adopts gas insulation, and has large volume and low safety. Publication number CN108173159A discloses a high-voltage switchgear flange connection device, which includes a main disconnecting switch, a standby disconnecting switch, a circuit breaker, a grounding switch, an operating mechanism, a lightning arrester, a voltage transformer, and a connection relationship between the parts. In the production process of products, the fact that ethylene propylene diene monomer is adopted as an insulating material medium, the flange face deforms when the flanges are connected, the deformation amount reaches 2-5 mm, and therefore the silicon rubber insulating part in the middle of the flange connecting face is uneven in stress and insufficient in insulating capacity. In order to improve the insulating capability when connecting products, it is necessary to improve the flange connecting device in the prior CN108173159A document.
Disclosure of Invention
The utility model aims at providing a high tension switchgear flange joint device, intensity is high, small.
In order to achieve the above purpose, the technical scheme of the utility model is that: a high-voltage switch equipment flange connecting device comprises a sleeve and an isolating switch, wherein a copper conductive piece is arranged in the middle of the sleeve, a sleeve insulating layer is arranged outside the copper conductive piece, and a sleeve semi-conductive shielding layer is arranged outside the sleeve insulating layer; the sleeve has connecting flanges in the downward and rightward directions. The insulating layer of the downward flange of the sleeve is of an outer cone structure, and the insulating layer of the corresponding isolating switch flange is of an inner cone structure. The pole of the isolating switch is provided with 4 connecting flanges, the rear part is provided with a cable connecting flange, the upper part is provided with a sleeve connecting flange, the front part is provided with an operating mechanism and a mounting plate connecting flange, and the right side is provided with a breaker pole connecting flange. The middle of the isolating switch is an isolating vacuum arc extinguish chamber, a static end copper conductive piece is fixed at the static end of the isolating vacuum arc extinguish chamber, a isolating switch moving end copper piece is arranged at the moving end of the isolating vacuum arc extinguish chamber, and the isolating switch moving end copper piece is conducted with the isolating vacuum arc extinguish chamber through flexible connection. The sleeve copper conductive piece is conducted with the isolating switch movable end copper piece through the spring contact finger. And an isolating switch insulating layer is arranged outside the static end copper conductive piece, the isolating vacuum arc extinguish chamber and the moving end copper conductive piece of the isolating switch, and an isolating switch semi-conductive shielding layer is arranged outside the isolating switch insulating layer. A conical silicone rubber pad is arranged between the outer conical surface of the sleeve flange and the inner conical surface of the isolating switch flange and is used for insulation and sealing. The insulating layer of isolator flange internal cone bottom has sleeve pipe end voltage-sharing piece, and the tapered silicone rubber pad of sleeve pipe voltage-sharing piece cover internal cone bottom, and the main function is the electric field of even sleeve pipe external cone bottom and internal cone bottom, improves insulating ability, reduces the partial discharge volume. The sleeve equalizing piece is fixed and conducted with the isolating switch moving end copper piece. The inside of the flange at the connecting end of the isolating switch pole and the circuit breaker is provided with a circuit breaker end voltage equalizing part, the action of the voltage equalizing part is the same as that of a sleeve end voltage equalizing part, and an electric field at the connecting part of the bottom of the inner cone is uniform.
And a stainless steel outer flange is arranged on the semi-conductive shielding layer of the sleeve connecting flange. The outer flange is square structure, including outer riser and outer cross slab, and outer cross slab is fixed at outer riser middle part, has the round hole that is greater than the insulating layer in the middle of the outer cross slab, is fixed with the through-hole inserts on four angles of outer cross slab. The height of the through hole insert is 1-2 mm lower than that of the outer vertical plate. The outer diaphragm plate is provided with a via hole, so that the semiconductive shielding material can pass through and wrap the outer diaphragm plate conveniently during injection. The inner surface of the outer vertical plate of the outer flange, the outer diaphragm plate and the outer surface of the through hole insert are all polished by adopting a sand blasting process, so that the adhesive force between the outer vertical plate and the semiconductive shielding material is improved. The through hole insert, the outer vertical plate and the outer diaphragm plate are fixed through welding.
A stainless steel inner flange is arranged in a semi-conductive shielding layer of the isolating switch flange. The inner flange is of a square structure and has the same size as the outer flange. The inner flange is positioned in the semi-conductive shielding layer of the isolating switch flange. The inner flange comprises an inner vertical plate, an inner transverse partition plate and inner thread inserts, the inner transverse partition plate is fixed in the middle of the inner vertical plate, the inner thread inserts are fixed on four corners of the inner transverse partition plate, and the height of each inner thread insert is 1-2 mm lower than that of the inner vertical plate. The middle of the inner diaphragm plate is provided with a round hole larger than the insulating layer, and the inner diaphragm plate is provided with an inner through hole. The inner vertical plate is provided with a vertical plate through hole. The surfaces of the inner vertical plate of the inner flange, the outer surface of the inner thread insert and the surface of the inner transverse diaphragm are all polished by a sand blasting process, so that the adhesive force between the inner vertical plate and the semiconductive shielding material is improved. The inner vertical plate, the inner diaphragm plate and the inner thread insert are fixed by welding.
The outer flange and the inner flange are preferably 304# stainless steel, and the thickness of the stainless steel plate is 3-6 mm. The thickness of the stainless steel is comprehensively considered according to the deformation caused by the injection pressure of the ethylene propylene diene monomer and the required strength of the flange. The height of the through hole insert is 1-2 mm lower than that of the outer vertical plate, and the height of the inner thread insert is 1-2 mm lower than that of the inner vertical plate, so that deformation in the injection molding process is mainly avoided, and the outer vertical plate and the inner vertical plate are not tightly combined to cause gaps during installation.
The use method of the high-voltage switch equipment flange connecting device comprises the following steps: firstly, cleaning an inner cone insulating layer of an isolating switch flange, an outer cone insulating layer of a sleeve flange and a conical silicone rubber pad by using absolute ethyl alcohol; then coating a layer of insulating silicone grease on the conical silicone rubber pad and placing the insulating silicone grease on the surface of the inner conical insulating layer of the isolating switch flange; then a spring contact finger is arranged in a groove of the copper part at the movable end of the isolating switch, which is positioned in the middle of the isolating switch inner cone; then, installing the conductive copper piece of the sleeve flange into the isolating switch flange and connecting the conductive copper piece with the spring contact finger; and finally, aligning the outer flange and the inner flange, penetrating the through hole insert by using a long rod bolt, screwing the long rod bolt into the inner thread insert, and slowly screwing the long rod bolt in a diagonal screwing mode until the outer vertical plate and the inner vertical plate are tightly combined.
Because the stainless steel outer flange or the stainless steel inner flange is added in the semi-conductive shielding layer of the flange, the strength of the flange is improved, the conical silicone rubber pad can be uniformly extruded by the outer conical surface insulating layer and the inner conical surface insulating layer, and the insulating capability of the conical silicone rubber pad is ensured. The sleeve pressure equalizing part is used for equalizing an electric field at the transition position of the outer cone and the inner cone, solving the ionization problem of air residual at the bottom of the inner cone and reducing the partial discharge value of a product.
The pole of the isolating switch, the cable connecting flange, the sleeve connecting flange, the operating mechanism and the mounting plate connecting flange, the breaker pole connecting flange, the corresponding cable connecting sleeve flange, the breaker pole flange and the like can adopt a stainless steel outer flange and inner flange combined structure. The problem of the hardness of current EPDM rubber after the solidification is not enough, when giving the equipment connection, the toper silicon rubber pad atress is uneven leads to the insulating ability not enough is solved.
The utility model has the advantages that: 1. the vacuum arc-extinguishing chamber and the solid insulating material are adopted, so that the size of the switch is reduced; 2. the pole adopts the voltage equalizing piece and the semi-conductive shielding grounding layer, so that the local discharge capacity of the product is reduced, and the service life of the product is prolonged; 3. the design of the outer flange and the inner flange improves the strength of flange connection.
Drawings
FIG. 1 is a top view of a high-voltage switchgear;
fig. 2 is a front view of the high-voltage switchgear;
FIG. 3 is a cross-sectional view of a high voltage switchgear A-A;
FIG. 4 is a top view of the outer flange;
FIG. 5 is a cross-sectional view of the outer flange B-B;
fig. 6 is a cross-sectional view of the inner flange.
The reference numbers illustrate: 1. The bushing, 1.1, copper conductive piece, 1.2, bushing insulating layer, 1.3, bushing semi-conductive shielding layer, 1.4, outer cone 2, isolating switch, 2.1, inner cone, 3, outer flange, 3.1, outer vertical plate, 3.2, through hole insert, 3.3, outer diaphragm plate, 3.4, via hole, 4, inner flange, 4.1, inner vertical plate, 4.2 inner screw tooth insert, 4.3, inner diaphragm plate, 4.4, inner via hole, 4.5, vertical plate via hole, 5, isolating switch semi-conductive shielding layer, 6, conical silicon rubber pad, 7, isolating switch insulating layer, 8, isolating switch movable end copper piece, 9, bushing end uniform pressure piece, 10, breaker end uniform pressure piece, 11, isolating vacuum arc extinguish chamber, 12, soft connection.
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1, 2 and 3, a high-voltage switchgear flange connection device includes a bushing 1 and a disconnector 2, a copper conductive member 1.1 is arranged in the middle of the bushing 1, a bushing insulating layer 1.2 is arranged outside the copper conductive member 1.1, and a bushing semi-conductive shielding layer 1.3 is arranged outside the bushing insulating layer 1.2; the sleeve has connecting flanges in the downward and rightward directions. The insulating layer 1.2 of the downward flange of the sleeve is of an outer cone structure, and the insulating layer of the corresponding isolating switch flange is of an inner cone structure. A conical silicone rubber pad 6 is arranged between the outer cone 1.4 and the inner cone 2.1, and the three are mutually matched to play the roles of insulation and sealing. The pole of the isolating switch is provided with 4 connecting flanges, the rear part is provided with a cable connecting flange, the upper part is provided with a sleeve connecting flange, the front part is provided with an operating mechanism and a mounting plate connecting flange, and the right side is provided with a breaker pole connecting flange. The middle of the isolating switch 2 is an isolating vacuum arc extinguish chamber 11, a static end copper conductive piece is fixed at the static end of the isolating vacuum arc extinguish chamber 11, a isolating switch moving end copper piece 8 is arranged at the moving end of the isolating vacuum arc extinguish chamber 11, and the isolating switch moving end copper piece 8 is conducted with the isolating vacuum arc extinguish chamber 11 through a flexible connection 12. The sleeve copper conductive piece 1.1 is conducted with the isolating switch movable end copper piece 8 through a spring contact finger. And an isolating switch insulating layer 7 is arranged outside the isolating switch static end copper conductive piece, the isolating vacuum arc extinguish chamber 11 and the isolating switch moving end copper conductive piece 8, and an isolating switch semi-conductive shielding layer 5 is arranged outside the isolating switch insulating layer 7. The insulating layer of interior awl 2.1 bottom in the isolator flange has sleeve pipe end voltage equalizing piece 9, and sleeve pipe voltage equalizing piece 9 covers the toper silicone rubber pad of interior conical surface bottom and the deformation space of reserving thereof, and the main function is the electric field of even sleeve pipe external cone bottom and interior conical surface bottom, thereby avoids remaining the air ionization to improve insulating ability, reduces the partial discharge volume. The sleeve equalizing piece 9 is fixed and conducted with the isolating switch moving end copper piece 8. The inside of the flange of the connecting end of the isolating switch pole and the circuit breaker is provided with a circuit breaker end voltage equalizing part 10, the effect of the voltage equalizing part is the same as that of a sleeve end voltage equalizing part 9, and the voltage equalizing part is uniformly internally provided with an electric field at the bottom connecting part.
The sleeve semi-conductive shielding layer 1.3 of the sleeve connecting flange is provided with a stainless steel outer flange 3. As shown in fig. 4 and 5, the outer flange 3 is a square structure and includes an outer vertical plate 3.1 and an outer diaphragm plate 3.3, the outer diaphragm plate 3.3 is fixed in the middle of the outer vertical plate 3.1, a round hole larger than the insulating layer is arranged in the middle of the outer diaphragm plate 3.3, and through-hole inserts 3.2 are fixed at four corners of the outer diaphragm plate 3.3. The height of the through hole insert 3.2 is 1-2 mm lower than that of the outer vertical plate 3.1. The outer diaphragm plate 3.3 is provided with a through hole 3.4, so that the semiconductive shielding material can pass through and wrap the outer diaphragm plate 3.3 conveniently during injection. The inner surface of an outer vertical plate 3.1 of the outer flange 3, the outer surface of the through hole insert 3.2 and the outer diaphragm plate 3.3 are all polished by a sand blasting process, so that the adhesive force between the outer vertical plate and the semiconductive shielding material is improved. The outer vertical plate 3.1, the through hole insert 3.2 and the outer diaphragm plate 3.3 are fixed by welding.
And a stainless steel inner flange 4 is arranged in a disconnecting switch semi-conductive shielding layer 5 of the disconnecting switch flange. The inner flange 4 is of a square configuration and is of the same size as the outer flange 3. The inner flange 4 is located within the isolating switch semiconducting shield layer 5. As shown in fig. 6, the inner flange 4 includes an inner vertical plate 4.1, an inner threaded insert 4.2, and an inner diaphragm plate 4.3, the inner diaphragm plate 4.3 is fixed in the middle of the inner vertical plate 4.1, the inner threaded insert 4.2 is fixed at four corners of the inner diaphragm plate 4.3, and the height of the inner threaded insert 4.2 is 1-2 mm lower than that of the inner vertical plate. The middle of the inner diaphragm plate 4.3 is provided with a round hole larger than the insulating layer, and the inner diaphragm plate 4.3 is provided with an inner through hole 4.4. The inner vertical plate 4.1 is provided with a vertical plate through hole 4.5. The surface of an inner vertical plate 4.1 of the inner flange 4, the outer surface of an inner thread insert 4.2 and the surface of an inner diaphragm plate 4.3 are polished by adopting a sand blasting process, so that the adhesive force between the inner vertical plate and the semiconductive shielding material is improved. The inner vertical plate 4.1, the inner thread insert 4.2 and the inner diaphragm plate 4.3 are fixed by welding.
The outer flange 3 and the inner flange 4 are preferably made of 304# stainless steel, and the thickness of the stainless steel plate used for the outer vertical plate 3.1, the outer diaphragm plate 3.3, the inner vertical plate 4.1 and the inner diaphragm plate 4.3 is 3 mm. The outer flange 3 has a height of 30 mm and a width of 210 mm. The through-hole insert 3.2 has a height of 28 mm and an inner diameter of 12 mm. The inner diameter of the inner thread insert is 4.2 mm and is 10 mm. The diameter of the round hole in the middle of the outer diaphragm 3.3 is 70 mm. The diameter of the round hole in the middle of the inner diaphragm plate 4.3 is 180 mm.
The use method of the high-voltage switch equipment flange connecting device comprises the following steps: firstly, cleaning an inner cone insulating layer of an isolating switch flange, an outer cone insulating layer of a sleeve flange and a conical silicone rubber pad by using absolute ethyl alcohol; then coating a layer of insulating silicone grease on the conical silicone rubber pad and placing the conical silicone rubber pad on the surface of the inner conical insulating layer of the isolating switch flange; then a spring contact finger is arranged in a groove of the copper part at the movable end of the isolating switch, which is positioned in the middle of the isolating switch inner cone; then, installing the conductive copper piece of the sleeve flange into the isolating switch flange and connecting the conductive copper piece with the spring contact finger; and finally, aligning the outer flange and the inner flange, penetrating the through hole insert by using a long rod bolt, screwing the long rod bolt into the inner thread insert, and slowly screwing the long rod bolt in a diagonal screwing mode until the outer vertical plate and the inner vertical plate are tightly combined.
The utility model has the advantages that: 1. the vacuum arc-extinguishing chamber and the solid insulating material are adopted, so that the size of the switch is reduced; 2. the pole adopts the voltage equalizing piece and the semi-conductive shielding grounding layer, so that the local discharge capacity of the product is reduced, and the service life of the product is prolonged; 3. the design of the outer flange and the inner flange improves the strength of flange connection.
Example 2
The outer flange 3 and the inner flange 4 are preferably made of 304# stainless steel, and the thickness of the stainless steel plate used for the outer vertical plate 3.1, the outer diaphragm plate 3.3, the inner vertical plate 4.1 and the inner diaphragm plate 4.3 is 6 mm. The outer flange 3 has a height of 30 mm and a width of 210 mm. The diameter of the round hole in the middle of the outer diaphragm 3.3 is 140 mm. The height of the inner flange is 50 mm, the width is 210 mm, and the diameter of the round hole in the middle of the inner diaphragm plate 4.3 is 160 mm.
The rest is the same as example 1.
Claims (4)
1. The utility model provides a high tension switchgear flange joint device, includes sleeve pipe (1), isolator (2), toper silicon rubber pad (6), its characterized in that: the middle of the sleeve (1) is provided with a copper conductive piece (1.1), the outer part of the copper conductive piece (1.1) is provided with a sleeve insulating layer (1.2), and the outer part of the sleeve insulating layer (1.2) is provided with a sleeve semi-conductive shielding layer (1.3); the insulating layer (1.2) of the downward flange of the sleeve is of an outer cone structure, and the insulating layer (7) of the isolating switch of the flange of the isolating switch (2) corresponding to the insulating layer is of an inner cone structure; a conical silicone rubber pad (6) is arranged between the outer cone (1.4) and the inner cone (2.1); an outer flange (3) is arranged in the sleeve semi-conductive shielding layer (1.3), and an inner flange (4) is arranged in the isolating switch semi-conductive shielding layer (5); the outer flange (3) and the inner flange (4) are of square structures and have the same external dimension.
2. A high voltage switchgear flange connection according to claim 1, characterized in that: the outer flange (3) comprises an outer vertical plate (3.1), an outer diaphragm plate (3.3) and a through hole insert (3.2); outer diaphragm (3.3) are fixed in the middle of outer riser (3.1), and there is the round hole that is greater than the insulating layer in the middle of outer diaphragm (3.3), are fixed with through-hole inserts (3.2) on four angles of outer diaphragm (3.3).
3. A high voltage switchgear flange connection according to claim 2, characterized in that: the height of the through hole insert (3.2) is 1-2 mm lower than that of the outer vertical plate (3.1).
4. A high voltage switchgear flange connection according to claim 1, characterized in that: the inner flange (4) comprises an inner vertical plate (4.1), an inner threaded insert (4.2) and an inner diaphragm plate (4.3), the inner diaphragm plate (4.3) is fixed in the middle of the inner vertical plate (4.1), the inner threaded insert (4.2) is fixed at four corners of the inner diaphragm plate (4.3), and the height of the inner threaded insert (4.2) is 1-2 mm lower than that of the inner vertical plate (4.1); a round hole larger than the insulating layer is arranged in the middle of the inner diaphragm plate (4.3), and an inner through hole (4.4) is arranged on the inner diaphragm plate (4.3); the inner vertical plate (4.1) is provided with a vertical plate through hole (4.5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920939264.1U CN209981884U (en) | 2019-06-21 | 2019-06-21 | Flange connecting device of high-voltage switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920939264.1U CN209981884U (en) | 2019-06-21 | 2019-06-21 | Flange connecting device of high-voltage switch equipment |
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| Publication Number | Publication Date |
|---|---|
| CN209981884U true CN209981884U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920939264.1U Active CN209981884U (en) | 2019-06-21 | 2019-06-21 | Flange connecting device of high-voltage switch equipment |
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| Country | Link |
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| CN (1) | CN209981884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137840A (en) * | 2019-06-21 | 2019-08-16 | 北海银河开关设备有限公司 | High-tension switch gear flange connecting apparatus |
-
2019
- 2019-06-21 CN CN201920939264.1U patent/CN209981884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137840A (en) * | 2019-06-21 | 2019-08-16 | 北海银河开关设备有限公司 | High-tension switch gear flange connecting apparatus |
| CN110137840B (en) * | 2019-06-21 | 2023-06-02 | 北海银河开关设备有限公司 | Flange connecting device of high-voltage switch equipment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Effective date of registration: 20210915 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: No. 11, Xizang Road, Haicheng District, Beihai City, Guangxi Zhuang Autonomous Region Patentee before: BEIHAI GALAXY SWITCH DEVICES Co.,Ltd. |
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| TR01 | Transfer of patent right |