Wire strain clamp capable of effectively inhibiting heating of drainage plate

Abstract

The utility model relates to the technical field of power transmission line fittings, and discloses a wire strain clamp capable of effectively inhibiting heating of a drainage plate, which comprises a steel anchor (1), a strain clamp body (2), a drainage clamp (3), a bolt assembly (4) and a bypass flexible jumper wire (5), a steel core part of a wire is crimped in the steel anchor, an aluminum stranded wire part is crimped in an aluminum pipe of the clamp body, and the bypass flexible jumper wire (5) is crimped in the strain clamp body. The jumper wire is crimped in the main drainage aluminum tube of the drainage wire clamp; one end of the bypass flexible jumper wire is crimped in the auxiliary drainage aluminum tube of the drainage wire clamp, and the other end of the bypass flexible jumper wire is crimped in the drainage aluminum tube of the strain clamp body; the strain clamp body drainage main plate is connected with the main drainage connecting plate through a bolt assembly. According to the utility model, by arranging the bypass flexible jumper wire, the current flowing through the strain clamp is shared; the main drainage plate and the main drainage connecting plate of the wire clamp body are sawtooth-shaped, the contact area is increased, the contact resistance is reduced, and the bolt assembly for connecting the main drainage plate and the main drainage connecting plate is provided with the anti-loosening hoop, so that loosening is avoided, and heating of the drainage plate is effectively inhibited.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission line hardware, in particular to a conductor tension clamp which can effectively suppress the heating of a drainage plate. Background Art

[0002] Conductor tension clamps are important hardware for transmission lines, usually used on tension towers. The hardware not only bears the tension of the conductor, but also bears long-term load current and short-term short-circuit current. Drain plate heating is a common defect in the operation of conductor tension clamps. During peak hours of electricity consumption, the clamps are prone to deformation or even melting, endangering the safe operation of the power system. There are two main factors affecting the heating of the drain plate. First, the drain plate needs to withstand long-term load current and short-term short-circuit current. The heat is proportional to the square of the current. The larger the current, the more serious the heating of the drain plate. Second, the drain plate is connected by bolts. When the bolts are loose, the contact resistance increases, the heat generated increases, and the heating is serious.

[0003] The conductor tension clamp is exposed to the wild for a long time, and its drain plate is exposed to the sun and rain for a long time, which causes the connection parts to loosen, corrode, and have poor contact, which in turn causes the contact resistance of the connection parts to be much greater than the normal value. Due to the increase in contact resistance, when a large current flows through, the temperature will increase significantly. In severe cases, the connection parts will burn red or even melt, causing a disconnection failure. At present, when the equipment operation and maintenance unit finds that the drain plate of the tension clamp is overheated, in most cases the treatment method adopted is to loosen the drain plate, manually polish the surface of the drain plate with sandpaper, and then retighten the drain plate bolts. A few months after the power transmission operation is restored, the drain plate of the tension clamp is infrared-measured again. If it is still hot, it must be repaired again, which increases the workload of the operation and maintenance personnel and does not fundamentally solve the heating problem.

[0004] In view of this, in order to improve the reliability of transmission lines, ensure the safe operation of power grids, and at the same time reduce the maintenance workload and power outage time of operators, it is necessary to further study the transmission line conductor tension clamps. Utility Model Content

[0005] The utility model is to solve the problem of heating of the drainage plate in the existing wire tension clamp, and proposes a wire tension clamp which can effectively suppress the heating of the drainage plate.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A conductor tension clamp capable of effectively suppressing heating of a drainage plate is designed, comprising a steel anchor (1), a tension clamp body (2), a drainage clamp (3), a bolt assembly (4) and a bypass soft jumper (5), characterized in that: the steel core portion of the conductor (6) is crimped into the steel anchor (1), and the aluminum stranded wire portion is crimped into the aluminum tube of the clamp body; the jumper (7) is crimped into the main drainage aluminum tube of the drainage clamp (3); one end of the bypass soft jumper (5) is crimped into the auxiliary drainage aluminum tube of the drainage clamp (3), and the other end is crimped into the main drainage aluminum tube of the tension clamp body (2); the tension clamp body (2) and the drainage clamp (3) are connected by a bolt assembly (4).

[0008] Furthermore, the tension clamp body (2) comprises a clamp body aluminum tube (201), a clamp body drainage main plate (202), a clamp body drainage attachment plate (203), and a clamp body drainage aluminum tube (204).

[0009] Furthermore, the wire clamp body drainage main plate (202) is made of aluminum alloy, and the body drainage main plate (202) is configured to be serrated, the wire clamp body drainage main plate (202) and the wire clamp body aluminum tube (201) are connected by welding, and the wire clamp body drainage attachment plate (203) and the wire clamp body aluminum tube (201) are connected by welding.

[0010] Furthermore, the drainage wire clamp (3) comprises a main drainage connection plate (301), a main drainage aluminum tube (302), an auxiliary drainage connection plate (303) and an auxiliary drainage aluminum tube (304).

[0011] Furthermore, the main drainage connection plate (301) is made of aluminum alloy and is configured in a sawtooth shape. The main drainage aluminum tube (302) and the auxiliary drainage connection plate (303) are connected by welding.

[0012] Furthermore, the bolt assembly (4) comprises a bolt (401), a flat washer (402), a spring washer (403), a nut (404) and an anti-loosening clamp (405).

[0013] Furthermore, the bypass soft jumper (5) uses an aluminum stranded wire that matches the cross-section of the conductor (6), and the bypass soft jumper (5) is connected to the drainage aluminum tube (204) of the wire clamp body by crimping, and the bypass soft jumper (5) is connected to the attached drainage aluminum tube (304) by crimping.

[0014] The utility model proposes a conductor tension clamp which can effectively suppress the heating of the drainage plate, improves the reliability of the transmission line, reduces the power outage time and the maintenance workload of the operating personnel, and reduces the operation risk of the power grid. The beneficial effects are:

[0015] (1) The utility model is provided with a bypass soft jumper, which plays a shunting role and reduces the current flowing through the drainage plate. The greater the resistance of the drainage plate, the more shunting, the smaller the current flowing through the drainage plate, the less heat the drainage plate generates, and thus suppresses the heating of the drainage plate.

[0016] (2) The utility model sets the main drainage main board and the main drainage connecting plate to be serrated, which increases the contact area between the two, reduces the contact resistance, and reduces the heat generated by the drainage plate;

[0017] (3) The utility model adopts anti-loosening measures for the connecting bolts of the main drainage main board and the main drainage connecting board to avoid loosening, thereby enhancing the fit between the two and effectively suppressing the heating of the drainage plate.

[0018] In summary, the utility model is a conductor tension clamp which is proposed on the basis of the existing tension clamp and can effectively suppress the heating of the drainage plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The drawings of the utility model are as follows:

[0020] Figure 1 This is a schematic diagram of the structure of a conductor tension clamp proposed by the utility model that can effectively suppress the heating of the drainage plate;

[0021] Figure 2 This is a schematic diagram of the main structure of a conductor tension clamp that can effectively suppress the heating of a drain plate, which is proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of the drainage clamp structure of a conductor tension clamp that can effectively suppress the heating of the drainage plate proposed by the utility model;

[0023] Figure 4 The utility model provides a schematic diagram of the bolt assembly structure of a conductor tension clamp which can effectively suppress the heating of a drainage plate.

[0024] In the figure: 1-steel anchor, 2-tension clamp body, 3-drainage clamp, 4-bolt assembly, 5-bypass soft jumper, 6-conducting wire, 7-jumper, 201-clamp body aluminum tube, 202-clamp body drainage main board, 203-clamp body drainage attached plate, 204-clamp body drainage aluminum tube, 301-main drainage connecting plate, 302-main drainage aluminum tube, 303-attached drainage connecting plate, 304-attached drainage aluminum tube, 401-bolt, 402-flat washer, 403-spring washer, 404-nut, 405-anti-loosening clamp. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 The utility model provides an embodiment: a conductor tension clamp capable of effectively suppressing heating of a drainage plate, comprising a steel anchor (1), a tension clamp body (2), a drainage clamp (3), a bolt assembly (4) and a bypass soft jumper (5), characterized in that: the steel core portion of the conductor (6) is crimped into the steel anchor (1), and the aluminum stranded wire portion is crimped into the aluminum tube of the clamp body; the jumper (7) is crimped into the main drainage aluminum tube of the drainage clamp (3); one end of the bypass soft jumper (5) is crimped into the auxiliary drainage aluminum tube of the drainage clamp (3), and the other end is crimped into the main drainage aluminum tube of the tension clamp body (2); the tension clamp body (2) and the drainage clamp (3) are connected by a bolt assembly (4).

[0027] Furthermore, the tension clamp body (2) comprises a clamp body aluminum tube (201), a clamp body drainage main plate (202), a clamp body drainage attachment plate (203), and a clamp body drainage aluminum tube (204); the clamp body drainage main plate (202) is made of aluminum alloy, and the body drainage main plate (202) is configured in a serrated shape; the clamp body drainage main plate (202) and the clamp body aluminum tube (201) are connected by welding; and the clamp body drainage attachment plate (203) and the clamp body aluminum tube (201) are connected by welding.

[0028] Furthermore, the drainage wire clamp (3) comprises a main drainage connection plate (301), a main drainage aluminum tube (302), an auxiliary drainage connection plate (303) and an auxiliary drainage aluminum tube (304); the main drainage connection plate (301) is made of aluminum alloy, and the main drainage connection plate (301) is configured in a serrated shape; the main drainage aluminum tube (302) and the auxiliary drainage connection plate (303) are connected by welding.

[0029] Furthermore, the bolt assembly (4) comprises a bolt (401), a flat washer (402), a spring washer (403), a nut (404) and an anti-loosening clamp (405).

[0030] Furthermore, the bypass soft jumper (5) uses an aluminum stranded wire that matches the cross-section of the conductor (6), and the bypass soft jumper (5) is connected to the drainage aluminum tube (204) of the wire clamp body by crimping, and the bypass soft jumper (5) is connected to the attached drainage aluminum tube (304) by crimping.

[0031] Specifically, during the actual construction process, the transmission line conductor (6) is passed through the aluminum tube (201) of the wire clamp body, the aluminum stranded wire slightly longer than the steel anchor hole is cut off and the steel core is inserted into the steel anchor (1), and then the steel anchor is clamped with a hydraulic press; the tension wire clamp body (2) is moved to the end of the steel anchor (1), the wire clamp body aluminum tube (201) is clamped with a hydraulic press, and the burrs are removed with a file or other tools; the jumper (7) is inserted into the main drainage aluminum tube (302) and clamped with a hydraulic press, one end of the bypass soft jumper (5) is inserted into the aluminum tube (201) of the wire clamp body and clamped with a hydraulic press, and the other end is inserted into the main drainage aluminum tube (302) and clamped with a hydraulic press; the wire clamp body drainage main board (202) and the main drainage connecting board (301) are connected by a bolt assembly (4); after the nut (404) is tightened, the anti-loosening clamp (405) is embedded in the first thread of the bolt (401) at the rear end of the nut (404).

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A conductor tension clamp capable of effectively suppressing heating of a drainage plate, comprising a steel anchor (1), a tension clamp body (2), a drainage clamp (3), a bolt assembly (4) and a bypass soft jumper (5), characterized in that: The steel core part of the conductor (6) is crimped into the steel anchor (1), and the aluminum stranded wire part is crimped into the aluminum tube of the wire clamp body; the jumper (7) is crimped into the main drainage aluminum tube of the drainage wire clamp (3); one end of the bypass soft jumper (5) is crimped into the auxiliary drainage aluminum tube of the drainage wire clamp (3), and the other end is crimped into the main drainage aluminum tube of the tension wire clamp body (2); the wire clamp body drainage main board of the tension wire clamp body (2) and the main drainage connecting plate of the drainage wire clamp (3) are connected by a bolt assembly (4).

2. A wire tension clamp capable of effectively suppressing heating of the drain plate according to claim 1, characterized in that: The tension clamp body (2) comprises a clamp body aluminum tube (201), a clamp body drainage main plate (202), a clamp body drainage attachment plate (203) and a clamp body drainage aluminum tube (204).

3. A wire tension clamp capable of effectively suppressing heating of the drain plate according to claim 2, characterized in that: The wire clamp body drainage main plate (202) is made of aluminum alloy, and the wire clamp body drainage main plate (202) is configured in a sawtooth shape. The wire clamp body drainage main plate (202) and the wire clamp body aluminum tube (201) are connected by welding, and the wire clamp body drainage attachment plate (203) and the wire clamp body aluminum tube (201) are connected by welding.

4. A conductor tension clamp capable of effectively suppressing heating of a drain plate according to claim 1, characterized in that: The drainage wire clamp (3) comprises a main drainage connection plate (301), a main drainage aluminum tube (302), an auxiliary drainage connection plate (303) and an auxiliary drainage aluminum tube (304).

5. A wire tension clamp capable of effectively suppressing heating of the drain plate according to claim 4, characterized in that: The main drainage connection plate (301) is made of aluminum alloy and is configured in a sawtooth shape. The main drainage aluminum tube (302) and the auxiliary drainage connection plate (303) are connected by welding.

6. A conductor tension clamp capable of effectively suppressing heating of a drain plate according to claim 1, characterized in that: The bolt assembly (4) comprises a bolt (401), a flat washer (402), a spring washer (403), a nut (404) and an anti-loosening clamp (405).

7. A conductor tension clamp capable of effectively suppressing heating of a drain plate according to claim 1, characterized in that: The bypass soft jumper (5) uses an aluminum stranded wire that matches the cross section of the conductor (6), and the bypass soft jumper (5) is connected to the drainage aluminum tube (204) of the wire clamp body by crimping, and the bypass soft jumper (5) is connected to the attached drainage aluminum tube (304) by crimping.

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