Disconnector static contact and disconnector

Abstract

The present invention provides a static contact of an isolating switch and an isolating switch, and relates to the technical field of switches. The static contact of the isolating switch comprises a conductive contact and an aluminum alloy base; the conductive contact is formed by stacking multiple pieces of copper, and the two sides and the middle part of the multiple pieces of copper are connected by welding; the conductive contact is formed in an integral U-shape, and a U-shaped groove is formed inside the conductive contact, and the aluminum alloy base is embedded in the U-shaped groove; a first heat dissipation hole is provided on the aluminum alloy base, a second heat dissipation hole is provided on the conductive contact, and a first connecting hole is provided in the aluminum alloy base, one end of the first connecting hole is connected to the first heat dissipation hole, and the other end of the first connecting hole is connected to the second heat dissipation hole. The problem of poor internal heat dissipation effect of the 10kV isolating switch, which leads to mechanical failure, is solved. The present invention arranges a first heat dissipation hole on the aluminum alloy base, arranges a second heat dissipation hole on the conductive contact, and uses the first connecting hole to connect the two heat dissipation holes to ensure good internal heat dissipation effect of the switch.

Description

Technical Field

[0001] The present invention relates to the technical field of switches, and in particular to a static contact of an isolating switch and an isolating switch. Background Art

[0002] Isolating switch is a switch device that is used to isolate power supply, switch operation, connect and disconnect small current circuit, and has no arc extinguishing function. When the isolating switch is in the open position, there is an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when the isolating switch is in the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions within a specified time.

[0003] In recent years, in the statistics of high-voltage switchgear operation failures, 10kV disconnector failures account for a large proportion, especially 10kV high-current disconnectors with a rated current of more than 3150A, which are generally used in low-incoming line cabinets or busbar sectionalizing cabinets. Once quality problems occur, it will seriously affect the safety and stability of the power grid. The main reasons for the high number of 10kV high-current disconnector failures are as follows:

[0004] a. It has been nearly 30 years since the original design and promotion of 10kVGN30. The early design had certain limitations due to materials and production processes;

[0005] b.In recent years, industrialization and residential electricity load have increased rapidly;

[0006] c. The system has been in operation for a long time and there is a lack of adequate maintenance during operation.

[0007] In view of the above three reasons, it is generally manifested that the temperature rise is too high during the long-term operation of the 10kV disconnector, and the internal heat dissipation effect of the 10kV disconnector is poor, which leads to mechanical failure, insulation failure and other problems. Summary of the invention

[0008] The object of the present invention is to provide a static contact of an isolating switch to solve the technical problem existing in the prior art that the internal heat dissipation effect of a 10kV isolating switch is poor, resulting in mechanical failure.

[0009] The present invention also provides an isolating switch to solve the technical problem in the prior art that the internal heat dissipation effect of the 10kV isolating switch is poor, resulting in mechanical failure.

[0010] The invention provides a static contact of an isolating switch, comprising a conductive contact and an aluminum alloy base;

[0011] The conductive contact is formed by stacking multiple pieces of copper, and the two sides and the middle part of the multiple pieces of copper are connected by welding;

[0012] The conductive contact is integrally formed in a U-shape, a U-shaped groove is formed inside the conductive contact, and the aluminum alloy base is embedded in the U-shaped groove;

[0013] The aluminum alloy base is provided with a first heat dissipation hole, the conductive contact is provided with a second heat dissipation hole, and the aluminum alloy base is provided with a first connecting hole, one end of the first connecting hole is connected to the first heat dissipation hole, and the other end of the first connecting hole is connected to the second heat dissipation hole.

[0014] Furthermore, a third heat dissipation hole is provided on the aluminum alloy base, a second connecting hole is provided in the aluminum alloy base, one end of the second connecting hole is connected to the first heat dissipation hole, and the other end of the second connecting hole is connected to the third heat dissipation hole.

[0015] Furthermore, the aluminum alloy base is also provided with a heat dissipation groove, and both ends of the heat dissipation groove are respectively connected with the first heat dissipation hole and the third heat dissipation hole;

[0016] The side wall of the heat dissipation groove is communicated with the side wall of the aluminum alloy base to form an open groove on the side wall of the aluminum alloy base.

[0017] Furthermore, the first heat dissipation holes and the third heat dissipation holes are multiple corresponding pairs.

[0018] Furthermore, a fourth heat dissipation hole is provided on the aluminum alloy base, a third connecting hole is provided in the aluminum alloy base, one end of the third connecting hole is connected to the fourth heat dissipation hole, and the other end of the third connecting hole is formed on the side wall of the aluminum alloy base.

[0019] Further, it also includes a stainless steel pad;

[0020] One side of the stainless steel pad abuts against the middle inner side surface of the conductive contact, and the other side of the stainless steel pad abuts against the side wall of the aluminum alloy base.

[0021] Furthermore, a fourth connecting hole is provided on the stainless steel pad, one end of the fourth connecting hole is connected to the first connecting hole, and the other end of the fourth connecting hole is connected to the second heat dissipation hole.

[0022] Furthermore, a fifth connecting hole is provided on the stainless steel pad, one end of the fifth connecting hole is connected to the third connecting hole, and the other end of the fifth connecting hole abuts against the middle inner side surface of the conductive contact.

[0023] Furthermore, the fifth connecting hole is a stepped hole whose diameter gradually increases from one end of the aluminum alloy base to one end of the conductive contact.

[0024] The present invention also provides an isolating switch, comprising a moving contact, a porcelain bottle, a support seat and the isolating switch static contact;

[0025] The number of the isolating switch static contacts is multiple, the number of the moving contacts is multiple, and the number of the porcelain bottles is multiple. Each static contact of the isolating switch is connected to one end of each moving contact, and the other end of each moving contact is connected to one end of each porcelain bottle, and the other end of each porcelain bottle is connected to the support seat.

[0026] The present invention provides a static contact of an isolating switch, wherein the conductive contact is formed by stacking a plurality of copper sheets, and the two sides and the middle part of the plurality of copper sheets are connected by welding, so as to ensure that the two sides and the middle part of the conductive contact can retain the characteristics of the thin sheet itself, thereby playing the role of soft connection and ensuring the flexible adjustment performance and conductive performance of the conductive contact; the conductive contact adopts an integrally formed U-shaped structure, so that a U-shaped groove is formed inside the conductive contact, the aluminum alloy base is embedded in the U-shaped groove, and the position of the aluminum alloy base is limited by the U-shaped groove, thereby improving the stability of the position connection of the aluminum alloy base; a first heat dissipation hole is arranged on the aluminum alloy base, and the first heat dissipation hole is used to dissipate heat for the aluminum alloy base in a vertical direction; a second heat dissipation hole is arranged on the conductive contact, and a first connection hole is arranged in the aluminum alloy base, one end of the first connection hole is connected to the first heat dissipation hole, and the other end of the first connection hole is connected to the second heat dissipation hole, so that the two heat dissipation holes can be connected through the first connection hole, so as to facilitate the heat dissipation of the heat dissipated inside the aluminum alloy base. The present invention arranges a first heat dissipation hole on the aluminum alloy base, arranges a second heat dissipation hole on the conductive contact, and utilizes a first connecting hole to connect the two heat dissipation holes, thereby ensuring a good internal heat dissipation effect of the switch.

[0027] The present invention also provides an isolating switch, wherein the static contact of the isolating switch is connected to one end of the moving contact, the other end of the moving contact is connected to one end of the porcelain bottle, and the other end of the porcelain bottle is connected to the support seat, forming a structure of the isolating switch, so that the internal heat dissipation effect of the isolating switch is good and the service life is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1A schematic diagram of the structure of a static contact of an isolating switch provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of a conductive contact provided by an embodiment of the present invention;

[0031] Figure 3 A schematic structural diagram of a side surface of an aluminum alloy base provided by an embodiment of the present invention;

[0032] Figure 4 A schematic structural diagram of another side of the aluminum alloy base provided by an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of a stainless steel pad provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the structure of an isolating switch provided in an embodiment of the present invention.

[0035] Icons: 100 - conductive contact; 200 - aluminum alloy base; 300 - stainless steel pad; 400 - moving contact; 500 - porcelain bottle; 600 - support seat; 101 - U-shaped groove; 102 - second heat dissipation hole; 201 - first heat dissipation hole; 202 - first connecting hole; 203 - third heat dissipation hole; 204 - second connecting hole; 205 - heat dissipation groove; 206 - fourth heat dissipation hole; 207 - third connecting hole; 301 - fourth connecting hole; 302 - fifth connecting hole. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Figure 1 A schematic structural diagram of a static contact of an isolating switch provided in an embodiment of the present invention.

[0040] like Figure 1 As shown, a static contact of an isolating switch provided by the present invention comprises a conductive contact 100 and an aluminum alloy base 200;

[0041] The conductive contact 100 is formed by stacking multiple copper sheets, and the two sides and the middle part of the multiple copper sheets are connected by welding;

[0042] The conductive contact 100 is integrally formed in a U-shape, a U-shaped groove 101 is formed inside the conductive contact 100, and the aluminum alloy base 200 is embedded in the U-shaped groove 101;

[0043] The aluminum alloy base 200 is provided with a first heat dissipation hole 201, the conductive contact 100 is provided with a second heat dissipation hole 102, and the aluminum alloy base 200 is provided with a first connecting hole 202, one end of the first connecting hole 202 is connected to the first heat dissipation hole 201, and the other end of the first connecting hole 202 is connected to the second heat dissipation hole 102.

[0044] In one embodiment of the present invention, the conductive contact 100 is formed by stacking eighty pieces of copper, and the two sides and the middle part of the eighty pieces of copper are connected by welding, so that the two sides and the middle part of the conductive contact 100 can retain the characteristics of the copper sheets themselves, play the role of soft connection, and also ensure the flexible adjustment performance and conductive performance of the conductive contact 100.

[0045] Figure 2 A schematic structural diagram of a conductive contact provided in an embodiment of the present invention.

[0046] like Figure 2 As shown, the conductive contact 100 is an integrally formed U-shape, so that a U-shaped groove 101 is formed inside the conductive contact 100, and the aluminum alloy base 200 is snap-connected in the U-shaped groove 101 to limit the position of the aluminum alloy base 200. The U-shaped groove 101 adopts an integrally formed structure, which not only has a simple manufacturing process, but also has a firm connection position with the aluminum alloy base 200, and also improves the stability of the connection of the aluminum alloy base 200.

[0047] A first heat dissipation hole 201 is provided on the aluminum alloy base 200 . The first heat dissipation hole 201 is a vertical through hole that passes through the height of the aluminum alloy base 200 , so that the first heat dissipation hole 201 can dissipate heat in the vertical direction.

[0048] The conductive contact 100 is provided with a second heat dissipation hole 102 . The second heat dissipation hole 102 is horizontally arranged and penetrates the thickness of the conductive contact 100 , so that the second heat dissipation hole 102 can dissipate heat in a horizontal direction.

[0049] A first connecting hole 202 is arranged inside the aluminum alloy base 200, and an inner end of the first connecting hole 202 is communicated with a side wall of the first heat dissipation hole 201, and an outer end of the first connecting hole 202 is formed on the front side of the aluminum alloy base 200 and is communicated with the second heat dissipation hole 102, so that the heat in the first heat dissipation hole 201 can flow to the second heat dissipation hole 102 through the first connecting hole 202, and diffuse outward through the second heat dissipation hole 102, thereby improving the heat dissipation effect inside the aluminum alloy base 200 and increasing the service life of the aluminum alloy base 200.

[0050] In order to improve the heat dissipation effect of the first heat dissipation holes 201 , the number of the first connection holes 202 is set to be multiple, and the number of the second heat dissipation holes 102 is set to be a number corresponding to the number of the first connection holes 202 .

[0051] The diameter of the first connection hole 202 is the same as the diameter of the second heat dissipation hole 102 .

[0052] In another embodiment of the present invention, a first horizontal connecting hole can be further provided in the aluminum alloy base 200, wherein the diameter of the first horizontal connecting hole is smaller than the diameter of the first connecting hole 202, the inner end of the first horizontal connecting hole is connected to the side wall of the first heat dissipation hole 201, and the outer end of the first horizontal connecting hole is formed on the side wall of the aluminum alloy base 200; a second horizontal connecting hole is also provided on the side wall of the conductive contact 100, wherein the second horizontal connecting hole abuts against the outer end of the first horizontal connecting hole, and the diameter of the first horizontal connecting hole is the same as the diameter of the second horizontal connecting hole, so that the heat in the first heat dissipation hole 201 can also be dissipated outwardly along the first horizontal connecting hole and the second horizontal connecting hole in sequence.

[0053] In another embodiment of the present invention, the number of the first horizontal connection holes is multiple, and the number of the second horizontal connection holes is multiple corresponding to the number of the first horizontal connection holes, so as to dissipate the heat in the first heat dissipation hole 201 in the side wall direction of the aluminum alloy base 200.

[0054] Figure 3 A schematic structural diagram of a side surface of an aluminum alloy base provided by an embodiment of the present invention; Figure 4A schematic structural diagram of the other side of the aluminum alloy base provided in an embodiment of the present invention.

[0055] like Figure 3 , Figure 4 As shown, further, a third heat dissipation hole 203 is provided on the aluminum alloy base 200, and a second connecting hole 204 is provided in the aluminum alloy base 200, one end of the second connecting hole 204 is connected to the first heat dissipation hole 201, and the other end of the second connecting hole 204 is connected to the third heat dissipation hole 203.

[0056] exist Figure 3 , Figure 4 In the figure, the aluminum alloy base 200 is provided with a third heat dissipation hole 203, which is a vertically arranged through hole. The third heat dissipation hole 203 is arranged parallel to the first heat dissipation hole 201, and the third heat dissipation hole 203 is used to dissipate heat inside the aluminum alloy base 200 in the vertical direction.

[0057] A second connection hole 204 is arranged inside the aluminum alloy base 200. The second connection hole 204 is arranged horizontally. The inner end of the second connection hole 204 is connected to the side wall of the third heat dissipation hole 203, and the outer end of the second connection hole 204 is connected to the side wall of the first heat dissipation hole 201, so that the heat in the third heat dissipation hole 203 can also diffuse outward along the second connection hole 204 in the horizontal direction.

[0058] There are multiple second connection holes 204, and the multiple second connection holes 204 are arranged in the vertical direction. The inner end of each second connection hole 204 is connected to the inner wall of the third heat dissipation hole 203, and the outer end of each second connection hole 204 is connected to the side wall of the first heat dissipation hole 201. The multiple second connection holes 204 are used to dissipate the heat in the third heat dissipation hole 203 in the horizontal direction, thereby improving the heat dissipation rate of the third heat dissipation hole 203.

[0059] Furthermore, the aluminum alloy base 200 is further provided with a heat dissipation slot 205, and both ends of the heat dissipation slot 205 are respectively connected to the first heat dissipation hole 201 and the third heat dissipation hole 203;

[0060] The side wall of the heat dissipation groove 205 is connected to the side wall of the aluminum alloy base 200 to form an open groove on the side wall of the aluminum alloy base 200 .

[0061] The inner end of the heat dissipation slot 205 is connected to the side wall of the third heat dissipation hole 203 , and the outer end of the heat dissipation slot 205 is connected to the side wall of the first heat dissipation hole 201 , so that the heat in the two heat dissipation holes can be diffused through the heat dissipation slots 205 respectively.

[0062] The inner wall of the heat dissipation groove 205 is arranged in the aluminum alloy base 200, and the outer wall of the heat dissipation groove 205 is connected with the side wall of the aluminum alloy base 200, so that the heat dissipation groove 205 is an inwardly recessed open groove formed on the side wall of the aluminum alloy base 200, and the heat in the two heat dissipation holes is dissipated from the side wall of the aluminum alloy base 200.

[0063] Furthermore, the first heat dissipation holes 201 and the third heat dissipation holes 203 are multiple corresponding pairs.

[0064] In one embodiment of the present invention, the number of the first heat dissipation holes 201 and the third heat dissipation holes 203 is two corresponding pairs, and the two pairs of first heat dissipation holes 201 and third heat dissipation holes 203 are respectively arranged on both sides of the upper end surface of the aluminum alloy base 200 .

[0065] In another embodiment of the present invention, the number of the first heat dissipation holes 201 and the third heat dissipation holes 203 is two corresponding pairs, and each pair of the first heat dissipation holes 201 and the third heat dissipation holes 203 is connected to the heat dissipation slot 205, so that the heat dissipation effect of each pair of the first heat dissipation holes 201 and the third heat dissipation holes 203 is good.

[0066] Furthermore, a fourth heat dissipation hole 206 is provided on the aluminum alloy base 200 , and a third connecting hole 207 is provided in the aluminum alloy base 200 , one end of the third connecting hole 207 is connected to the fourth heat dissipation hole 206 , and the other end of the third connecting hole 207 is formed on the side wall of the aluminum alloy base 200 .

[0067] exist Figure 3 In the figure, the fourth heat dissipation hole 206 is a through hole formed in the middle position of the aluminum alloy base 200 , the fourth heat dissipation hole 206 is a vertically arranged hole, and the fourth heat dissipation hole 206 is arranged in the middle position of the upper end surface of the aluminum alloy base 200 .

[0068] The third connection hole 207 is horizontally arranged, and the inner end of the third connection hole 207 is connected to the side wall of the fourth heat dissipation hole 206. The outer end of the third connection hole 207 is formed on the front side of the aluminum alloy base 200. The third connection hole 207 is used to diffuse the heat in the fourth heat dissipation hole 206 outward in the horizontal direction.

[0069] There are multiple third connection holes 207, which are arranged in sequence in the vertical direction. The inner end of each third connection hole 207 is connected to the side wall of the fourth heat dissipation hole 206, and the outer end of each third connection hole 207 is formed on the front side of the aluminum alloy base 200, thereby improving the diffusion rate of heat in the fourth heat dissipation hole 206.

[0070] Figure 5 A schematic structural diagram of a stainless steel pad provided in an embodiment of the present invention.

[0071] like Figure 1 , Figure 5 As shown, further, a stainless steel pad 300 is included;

[0072] One surface of the stainless steel pad 300 abuts against the middle inner side surface of the conductive contact 100 , and the other surface of the stainless steel pad 300 abuts against the side wall of the aluminum alloy base 200 .

[0073] exist Figure 1 In the embodiment, the outer side surface of the stainless steel pad 300 abuts against the middle inner side surface of the conductive contact 100, and the inner side surface of the stainless steel pad 300 abuts against the front side wall of the aluminum alloy base 200, thereby improving the conductivity and stability of the conductive contact 100 during operation.

[0074] Furthermore, a fourth connection hole 301 is provided on the stainless steel pad 300 , one end of the fourth connection hole 301 is connected to the first connection hole 202 , and the other end of the fourth connection hole 301 is connected to the second heat dissipation hole 102 .

[0075] exist Figure 5 In the figure, the fourth connection hole 301 is a horizontally arranged through hole, the inner end of the fourth connection hole 301 is connected to the outer end of the first connection hole 202, and the outer end of the fourth connection hole 301 is connected to the inner end of the second heat dissipation hole 102. The fourth connection hole 301 is used to guide the heat in the first connection hole 202 to the second heat dissipation hole 102 and diffuse it outward.

[0076] There are multiple fourth connection holes 301 , which are evenly distributed on both sides of the stainless steel pad 300 . The number of the fourth connection holes 301 is the same as the number of the first connection holes 202 .

[0077] Furthermore, a fifth connection hole 302 is provided on the stainless steel pad 300 , one end of the fifth connection hole 302 is connected to the third connection hole 207 , and the other end of the fifth connection hole 302 abuts against the middle inner side surface of the conductive contact 100 .

[0078] exist Figure 5 In the figure, the fifth connecting hole 302 is arranged in the middle position of the stainless steel pad 300, the inner end of the fifth connecting hole 302 is connected with the outer end of the third connecting hole 207, and the outer end of the fifth connecting hole 302 abuts against the middle inner side surface of the conductive contact 100. The fifth connecting hole 302 is used to increase the heat flow area in the third connecting hole 207.

[0079] There are multiple fifth connection holes 302 , and the multiple fifth connection holes 302 are arranged in sequence in the vertical direction.

[0080] Furthermore, the fifth connection hole 302 is a stepped hole whose diameter gradually increases from one end of the aluminum alloy base 200 to one end of the conductive contact 100 .

[0081] The inner end diameter of the fifth connection hole 302 is the same as the diameter of the third connection hole 207 , ensuring that the heat in the third connection hole 207 can be accurately diffused along the fifth connection hole 302 without leakage.

[0082] The fifth connection hole 302 is a stepped hole with a diameter at the outer end being larger than a diameter at the inner end, so that the heat entering the fifth connection hole 302 can be diffused along a larger space.

[0083] Figure 6 A schematic diagram of the structure of an isolating switch provided in an embodiment of the present invention.

[0084] like Figure 6 As shown, the present invention also provides a disconnector, comprising a moving contact 400, a porcelain bottle 500, a support seat 600 and the static contact of the disconnector;

[0085] There are multiple static contacts of the isolating switch, multiple moving contacts 400, and multiple porcelain bottles 500. Each static contact of the isolating switch is connected to one end of each moving contact 400, and the other end of each moving contact 400 is connected to one end of each porcelain bottle 500, and the other end of each porcelain bottle 500 is connected to the support seat 600.

[0086] exist Figure 6 In the embodiment, the number of static contacts of the isolating switch, the number of moving contacts 400, and the number of porcelain bottles 500 are all six.

[0087] The moving contact 400 is clamped on the outer side of the U-shaped groove 101 of the conductive contact 100 of the static contact of the isolating switch, the lower end of the moving contact 400 is connected to the outer end of the porcelain bottle 500, the inner end of the porcelain bottle 500 is connected to the support seat 600, and three porcelain bottles 500 are connected to the upper end surface of the support seat 600, and three porcelain bottles 500 are connected to the lower end surface of the support seat 600.

[0088] The conductive contact 100 is formed by welding high-purity thin copper sheets, and the middle part has a soft connection feature, so that the conductive contact 100 has automatic meshing performance in part; a plurality of heat dissipation holes and connection holes are respectively arranged on the conductive contact 100 and the aluminum alloy base 200 to dissipate heat inside and avoid excessive internal temperature; the moving contact 400 adopts an integrated high-purity copper tube with flow conduction continuity, and heat dissipation material is arranged on the inner wall of the moving contact 400 to increase the heat dissipation area and combine the heat dissipation with flue efficiency; the support seat 600 adopts high-strength non-magnetic conductive material to eliminate eddy currents and reduce the overall and local temperature rise of the disconnector.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A static contact of an isolating switch, characterized in that: It comprises a conductive contact (100) and an aluminum alloy base (200); The conductive contact (100) is formed by stacking multiple copper sheets, and the two sides and the middle part of the multiple copper sheets are connected by welding; The conductive contact (100) is integrally formed in a U-shape, a U-shaped groove (101) is formed inside the conductive contact (100), and the aluminum alloy base (200) is embedded in the U-shaped groove (101); The aluminum alloy base (200) is provided with a first heat dissipation hole (201), the first heat dissipation hole (201) being a vertical through hole that passes through the height of the aluminum alloy base (200); the conductive contact (100) is provided with a second heat dissipation hole (102); a first connecting hole (202) is provided in the aluminum alloy base (200), one end of the first connecting hole (202) is connected to the first heat dissipation hole (201), and the other end of the first connecting hole (202) is connected to the second heat dissipation hole (102); Also includes a stainless steel spacer (300); One side of the stainless steel pad (300) abuts against the middle inner side surface of the conductive contact (100), and the other side of the stainless steel pad (300) abuts against the side wall of the aluminum alloy base (200); The stainless steel pad (300) is provided with a fourth connection hole (301), one end of the fourth connection hole (301) is connected to the first connection hole (202), and the other end of the fourth connection hole (301) is connected to the second heat dissipation hole (102).

2. The static contact of the isolating switch according to claim 1, characterized in that: The aluminum alloy base (200) is also provided with a third heat dissipation hole (203), and the aluminum alloy base (200) is provided with a second connection hole (204), one end of the second connection hole (204) is connected to the first heat dissipation hole (201), and the other end of the second connection hole (204) is connected to the third heat dissipation hole (203).

3. The static contact of the isolating switch according to claim 2, characterized in that: The aluminum alloy base (200) is also provided with a heat dissipation groove (205), and two ends of the heat dissipation groove (205) are respectively connected to the first heat dissipation hole (201) and the third heat dissipation hole (203); The side wall of the heat dissipation groove (205) is connected to the side wall of the aluminum alloy base (200) to form an open groove on the side wall of the aluminum alloy base (200).

4. The static contact of the isolating switch according to claim 3, characterized in that: The first heat dissipation holes (201) and the third heat dissipation holes (203) are multiple corresponding pairs.

5. The static contact of the isolating switch according to claim 1, characterized in that: A fourth heat dissipation hole (206) is provided on the aluminum alloy base (200), a third connection hole (207) is provided in the aluminum alloy base (200), one end of the third connection hole (207) is connected to the fourth heat dissipation hole (206), and the other end of the third connection hole (207) is formed on the side wall of the aluminum alloy base (200).

6. The static contact of the isolating switch according to claim 5, characterized in that: The stainless steel pad (300) is provided with a fifth connection hole (302), one end of the fifth connection hole (302) is connected to the third connection hole (207), and the other end of the fifth connection hole (302) abuts against the middle inner side surface of the conductive contact (100).

7. The static contact of the isolating switch according to claim 6, characterized in that: The fifth connection hole (302) is a stepped hole whose diameter gradually increases from one end of the aluminum alloy base (200) to one end of the conductive contact (100).

8. An isolating switch, characterized in that: It comprises a moving contact (400), a porcelain bottle (500), a support seat (600) and a static contact of an isolating switch as claimed in any one of claims 1 to 7; The number of the isolating switch static contacts is multiple, the number of the moving contacts (400) is multiple, and the number of the porcelain bottles (500) is multiple. Each of the isolating switch static contacts is connected to one end of each of the moving contacts (400), and the other end of each of the moving contacts (400) is connected to one end of each of the porcelain bottles (500), and the other end of each of the porcelain bottles (500) is connected to the support seat (600).

Images