A portable fixture for fixing transformer test leads

Abstract

The present invention discloses a portable and fixable transformer test lead clamp, which aims to solve the problem that the existing transformer test cable is fixed in the air by being tied with an insulating rope. However, due to the long length of the test cable, the wire is easily loosened and touches the bushing and the transformer housing due to the weight of the cable itself, wind blowing or external force when connecting the wires, and the connection between the clamp and the test object becomes loose. The test data does not meet the standard, which leads to increased troubleshooting time. The invention includes a transformer housing and a plurality of connecting rods. A support frame 1 and a support frame 2 are fixed on the transformer housing; the support frame 1 is arranged on the upper side of the transformer housing, including a support rod assembly 1 arranged on both sides of the transformer housing and connected to the connecting rod, and a support rod assembly 2 arranged between the two support rod assemblies 1 for cable support; the support frame 2 is arranged on the front side of the transformer housing, including a support rod assembly 3 arranged on both sides of the transformer housing and a plurality of support rod assemblies 4 for cable support.

Description

Technical Field

[0001] The present invention relates to a clamp-related technical field, and more particularly, to a portable clamp capable of fixing transformer test lead wires. Background Art

[0002] As a core component of the power grid, the safe and stable operation of transformers is crucial for ensuring reliable power supply and minimizing power outages. Regularly conducting preventive tests on main transformers is an effective means of ensuring safe and stable operation. According to Section 6.2.3 of the Transformer Testing Guidelines, high-voltage test cables should be kept suspended whenever possible. When support is necessary, the insulation condition and distance of the support must be verified to ensure reliable measurement results. Currently, the primary method for securing transformer test cables is to tie them in place with insulating rope. However, due to their length, the weight of the cables themselves, as well as external forces such as wind or contact during wiring, can cause the conductors to loosen and contact the bushing and transformer casing, loosening the connection between the fixture and the test object, resulting in substandard test data and increased troubleshooting time. With the decentralization of 110kV maintenance, the development of a new tool to shorten work time and improve first-time test success rates has become a necessity.

[0003] Chinese patent publication number CN202533466U discloses an insulating bracket for high-voltage testing. The bracket includes a base, a telescopic rod, and a support rod. The base has a rubber pad at the bottom, and its upper end is threadedly connected to the telescopic rod via a fixing slot. However, the bracket suffers from poor reliability and the cable is prone to tangling. Summary of the Invention

[0004] The present invention overcomes the shortcomings of the existing transformer test cable which is fixed in the air by tying with insulating ropes, but due to the long test cable, the wires are easily loosened and touch the bushing and the transformer casing under the action of the cable's own gravity, wind blowing or external force during wiring, and the connection between the clamp and the test product becomes loose, and the test data does not meet the standard, which leads to increased troubleshooting time. The present invention provides a portable and fixable transformer test lead clamp, which can effectively and reliably fix and support the transformer test cable, so that the cable can still keep the wires tight under the action of its own gravity, wind blowing or external force during wiring, thereby improving the success rate of the test and reducing the troubleshooting time.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a portable fixture for fixing transformer test leads, comprising a transformer housing mounted on a transformer body, the transformer housing comprising six groups of heat dissipation housings, heat dissipation fin groups comprising a plurality of heat dissipation fins arranged in arrays on both sides of the heat dissipation housings, three connecting rods being provided on each of the heat dissipation fin groups on both sides of the heat dissipation housings, and a first support frame and a second support frame being fixed to the transformer housing;

[0006] The support frame 1 is arranged on the upper side of the transformer housing, including a support rod assembly 1 arranged on both sides of the transformer housing and connected to the connecting rod, and a support rod assembly 2 arranged between the two support rod assemblies 1. The support rod assembly 2 includes a support long rod 1 and a plurality of support short rods 1 vertically arranged on the support long rod 1. Each test cable pulled out from the transformer body can be fixed on the support short rod 1 by winding and fixing.

[0007] The support frame 2 is arranged on the front side of the transformer casing, and includes a support rod assembly 3 arranged on both sides of the transformer casing and connected to the connecting rod, and several support rod assemblies 4 arranged between the two support rod assemblies 3. The support rod assembly 4 includes a support long rod 2 and several support short rods 2 vertically arranged on the support long rod 2. Each test cable pulled out from the support rod assembly 2 can be fixed on the support short rod 2 by winding and fixing, and then a part of the length of the cable can be pulled out for transformer testing.

[0008] The present invention provides a portable, fixable transformer test lead clamp, wherein support rod assembly one and support rod assembly two are both made of stainless steel, and support rod assembly two and support rod assembly four are both made of insulating material; the application of the clamping tool of this solution has greatly improved work efficiency, shortened the downtime of the transformer, and on the other hand indirectly improved the safety quality of construction. From the data statistics of recent months, it can be seen that our efficiency has increased by nearly 2 times, and the economic benefits are significant. Safety in production is an eternal theme. The successful development of new tools has reduced the possibility of falling from heights, the wiring is clear, and the possibility of miswiring is reduced. In addition, due to the reduction in the number of times the main transformer is connected, the physical strength of the personnel is guaranteed, and the impact on safety in subsequent work is inestimable. It can be said that the application of this equipment is another safety guarantee in the pre-test work of the transformer.

[0009] Preferably, a plurality of hooks are provided on the supporting long rod, the hooks are in an "S"-shaped structure, and the hooks are provided with through holes. The hooks can be moved and adjusted along the length direction of the supporting long rod, and the wires can pass through the through holes and then be hung on the hooks to achieve fixation of the wires at different positions.

[0010] Preferably, the support rod assembly 1 includes a square tube 1, a fixing part 1 fixed on one side wall of the square tube, a fixing part 2, and a fixing part 3 provided at one end of the square tube; the fixing part 1 is in an "L"-shaped structure; the fixing part 2 includes a main connecting body and a plurality of extension bodies, a groove is provided on one side wall of the main connecting body, and the extension bodies are provided on the main connecting body walls on both sides of the groove, and the extension bodies are in an "L"-shaped structure, with threaded holes provided in the grooves, and bolts provided in the threaded holes. The fixing part 1 can be inserted between two adjacent heat sinks and connected to the connecting rod; the groove in the fixing part 2 cooperates with the square tube 1 and can achieve adjustment of the fixing part 2 along the length direction of the square tube 1, so that the extension body is inserted between the two adjacent heat sinks and connected to the connecting rod, and then the direction tube 1 and the connecting rod are locked and fixed by bolts.

[0011] Preferably, the third fixing member includes a fixing member body, a nut mounted on the fixing member body, and a bolt mounted on the nut. The fixing member body is U-shaped and has a mounting slot therein. The position of the first supporting rod is adjusted by inserting the first supporting rod into the mounting slot, and then the first supporting rod and the first square tube are locked and fixed together by the bolt.

[0012] Preferably, the support rod assembly 3 includes a square tube 2, a fixing member 4, and a plurality of fixing members 5 arranged on the square tube; the fixing member 4 is in a "C"-shaped structure, and is composed of a connector 1, a connector 2, and a connector 3. The connector 1 is provided with bolts, the connector 2 is in a flat plate structure, and is provided at one end of the connector 1, and the connector 3 is in an "L"-shaped structure, and is provided at the other end of the connector 1. An opening is formed between the connector 2 and the connector 3. The fixing member 4 facilitates the installation and fixation of the cross-type pipe fittings. In this solution, the fixing member 4 is first connected to the connecting rod between two adjacent heat sinks, and then the square tube 2 is extended into the cavity between the connecting tube and the connector 1. After the position of the square tube 2 is adjusted, the two are locked and fixed by bolts.

[0013] Preferably, the fixing part five includes a connector four with an "L"-shaped structure, a nut is provided on the connector four, the upper end of the connector four is fixedly mounted on the wall of the square tube two, and the supporting long rod two is installed in the cavity formed between the connector four and the square tube two. After the position adjustment of the supporting long rod two is completed, the locking fixation between the two is achieved by bolts.

[0014] Preferably, the long support rod (1) is composed of a connecting piece (1) and a connecting piece (2). There are four short support rods, each connected to the long support rod (1) by bolts. The long support rod (1) is provided with three sets of hooks. The end wall of the connecting piece (1) is provided with an externally threaded mounting head, and the connecting piece (2) is provided with an internally threaded mounting cap. The mounting head and mounting cap are made of copper. The long support rod (1) is provided with four through-holes (1), through which bolts are passed to securely connect to the short support rod (1).

[0015] Preferably, there are two groups of support rod assemblies 4, and the support rod 2 is composed of a connection piece 3 and a connection piece 4. The end wall of the connection piece 3 is provided with a mounting head with an external thread structure, and the connection piece 4 is provided with a mounting cap with an internal thread structure. The mounting head and the mounting cap are made of copper.

[0016] Preferably, the long support rod 2 on the side close to the transformer housing is provided with three short support rods 2, each connected to the long support rod 2 by bolts; the long support rod 2 on the side away from the transformer housing is provided with four short support rods 2, each connected to the long support rod 2 by bolts. The long support rod 2 on the side close to the transformer housing is provided with three through-holes, and the long support rod 2 on the side away from the transformer housing is provided with four through-holes, through which bolts are passed through the through-holes to achieve a fastening connection with the short support rod 2.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the transformer test lead clamp is easy to use, easy to operate, and highly applicable. It can greatly improve work efficiency, shorten transformer downtime, and indirectly improve the safety quality of construction. It also reduces the possibility of falling from height, provides clear wiring, and reduces the possibility of miswiring. Moreover, due to the reduced number of main transformer connections, personnel physical strength is guaranteed, and the impact on safety in subsequent work is inestimable. It can be said that the application of this device is another safety guarantee in transformer pre-testing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a portable fixture capable of fixing transformer test leads of the present invention;

[0019] Figure 2 This is a side view of a portable fixture for fixing transformer test leads of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the support rod assembly 2 of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the support rod assembly 1 of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the fixing member 2 of the present invention;

[0023] Figure 6 1 is a schematic structural diagram of a fixing member 4 of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the hook of the present invention;

[0025] In the figure: transformer body 1; transformer housing 1.1; heat sink housing 1.2; heat sink assembly 2; connecting rod 3; support frame 1 4; support frame 2 5; support rod assembly 1 6; square tube 1 600; fixing piece 1 601; fixing piece 2 602; fixing piece 3 603; main connecting body 604; extension body 605; groove 606; bolt 607; fixing piece body 608; nut 609; mounting slot 610; support rod assembly 2 7; Long support rod 1 700; short support rod 1 701; hook 702; through hole 703; connector 1 704; connector 2 705; mounting head 706; mounting cap 707; support rod assembly 3 8; square tube 2 801; fixing piece 4 802; fixing piece 5 803; connector 1 804; connector 2 805; connector 3 806; connector 4 807; support rod assembly 4 9; long support rod 2 901; short support rod 2 902. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The technical solution of the invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0028] Example 1: A portable fixture for fixing transformer test leads, comprising a transformer housing 1.1 mounted on a transformer body 1, the transformer housing comprising six heat dissipation housings 1.2, with heat dissipation fin groups 2 comprising a plurality of heat dissipation fins arrayed on both sides of the heat dissipation housings, each of the heat dissipation fin groups on both sides of the heat dissipation housing being provided with three connecting rods 3, and a first support frame 4 and a second support frame 5 being fixed to the transformer housing;

[0029] The support frame 4 is arranged on the upper side of the transformer housing, including a support rod assembly 6 arranged on both sides of the transformer housing and connected to the connecting rod and a support rod assembly 2 7 arranged between the two support rod assemblies 1. The support rod assembly 2 includes a support long rod 1 700 and four groups of support short rods 1 701 vertically arranged on the support long rod 1. Each test cable pulled out from the transformer body can be fixed on the support short rod 1 by winding and fixing; three groups of hooks 702 are provided on the support long rod 1, and the hooks are in an "S" shape. There are through holes 703 on the hooks, and the hooks can be moved along the length direction of the support long rod 1. Movable adjustment, the wire can pass through the through hole and then be hung on the hook to achieve fixation of the wire at different positions; the supporting long rod is composed of a connecting piece 704 and a connecting piece 705, and a mounting head with an external thread structure is provided in the end wall of the connecting piece, and a mounting cap with an internal thread structure is provided on the connecting piece. The two are threadedly connected by the mounting head and the mounting cap. The mounting head and the mounting cap are made of copper. Four through holes are provided on the supporting long rod, and there are four supporting short rods in total. Bolts pass through the through hole one and are fastened to the supporting short rod. Three groups of hooks are provided on the supporting long rod, which are used to connect seven groups of wires in total.

[0030] The support frame 2 5 is disposed on the front side of the transformer housing and includes support rod assemblies 3 8 disposed on both sides of the transformer housing and connected to the connecting rods, and two groups of support rod assemblies 4 9 disposed between the two support rod assemblies 3. The support rod assemblies 4 include long support rods 2 901 and several short support rods 2 902 disposed perpendicularly on the long support rods 2. There are two groups of support rod assemblies 4, and the long support rods 2 are composed of connectors 3 and 4. The end wall of connector 3 is provided with an externally threaded mounting head, and connector 4 is provided with an internally threaded mounting cap. The mounting head and mounting cap are made of copper. The long support rod 2 on the side closest to the transformer housing is provided with three short support rods 2, each of which is bolted to the long support rod 2. The long support rod 2 on the side away from the transformer housing is provided with four short support rods 2, each of which is bolted to the long support rod 2. Each test cable pulled out from the support rod assembly 2 can be fixed to the short support rod 2 by winding and fixing. A portion of the cable can then be pulled out for transformer testing.

[0031] The support rod assembly 1 6 and the support rod assembly 3 8 are both made of metal materials; the support rod assembly 2 7 and the support rod assembly 9 4 are both made of insulating materials.

[0032] The support rod assembly 6 includes a square tube 600, a fixing piece 601 fixed on one side wall of the square tube, a fixing piece 602 and a fixing piece 603 set at one end of the square tube; the fixing piece 1 is an "L"-shaped structure, and the fixing piece 1 can be inserted between two adjacent heat sinks and connected to the connecting rod; the fixing piece 2 includes a main connecting body 604 and a plurality of extension bodies 605, a groove 606 is provided on one side wall of the main connecting body, and the extension bodies are provided on the main connecting body wall on both sides of the groove, and the extension bodies are in an "L"-shaped structure, a threaded hole is provided in the groove, and a bolt 607 is provided in the threaded hole, The groove in the second fixing part cooperates with the square tube one, and can realize the adjustment of the second fixing part along the length direction of the square tube one, so that the extension body is inserted between the two adjacent heat sinks and connected to the connecting rod, and then the direction tube one and the connecting rod are locked and fixed by bolts; the third fixing part includes a fixing part body 608, a nut 609 arranged on the fixing part body and a bolt arranged on the nut. The fixing part body is a "U"-shaped structure, and an installation groove 610 is provided in the fixing part body. The position is adjusted by extending the supporting long rod one into the installation groove, and then the supporting long rod one and the square tube one are locked and fixed by bolts.

[0033] The support rod assembly three includes a square tube two 801, a fixing member four 802 and a plurality of fixing members five 803 arranged on the square tube; the fixing member four is a "C"-shaped structure, including a connector one 804, a connector two 805 and a connector three 806. A bolt is provided on the connector one, the connector two is a flat plate structure, and is provided at one end of the connector one. The connector three is an "L"-shaped structure, and is provided at the other end of the connector one. An opening is formed between the connector two and the connector three. The fixing member four facilitates the installation and fixation of the cross-type pipe fitting. In this solution, the fixing member four is first used to fix the cross-type pipe fitting. The two adjacent heat sinks are connected with the connecting rod, and then the square tube two is extended into the cavity between the connecting tube and the connector one. After the position adjustment of the square tube two is completed, the two are locked and fixed by bolts; the fixing part five includes a connector four 807 with an "L"-shaped structure, and a nut 609 is provided on the connector four. The upper end of the connector four is welded and fixed on the wall of the square tube two, and the supporting long rod two is installed in the cavity formed between the connector four and the square tube two. After the position adjustment of the supporting long rod two is completed, the two are locked and fixed by bolts.

[0034] Installation process:

[0035] This solution uses two steps to assemble the main transformer test lead fixture structure:

[0036] (1) Assemble the support frame. The first step is to fix the two sets of support rod assemblies on both sides of the transformer shell. The specific installation method is as follows: first, insert the fixing piece on the square tube into the space between the two adjacent heat sinks on one side of the transformer shell and connect it to the second row of connecting rods. Then, the fixing piece is matched with the square tube through the groove in the fixing piece. The fixing piece is adjusted to a suitable position along the length direction of the square tube. The fixing piece is inserted between the two adjacent heat sinks and connected to the first row of connecting rods. Then, the direction tube is locked and fixed with the connecting rods by bolts. The installation method of support rod assembly 1 is the same; the second step is to fix support rod assembly 2 between the two sets of support rod assemblies 1. The specific installation method is as follows: first, the connecting piece 1 and the connecting piece 2 are threadedly connected through the mounting head and the mounting cap to form the support long rod 1, and then the support short rod 1 is fastened to the support long rod 1 with bolts. The support long rod 1 is also equipped with three sets of hooks for a total of seven sets of cable connection supports; then, the two ends of the support long rod 1 are inserted into the fixing piece 3 for position adjustment. Finally, the support long rod 1 and the square tube 1 are locked and fixed with bolts;

[0037] (2) Assemble the support frame 2. The first step is to fix the two groups of support rod assemblies 3 on both sides of the transformer housing. The specific installation method is as follows: first connect the fixing member 4 to the connecting rod between the two adjacent heat sinks on one side of the transformer housing and the third row, a total of two groups, then insert the square tube 2 into the cavity between the connecting tube and the connector 1, adjust the position of the square tube 2, and after the adjustment is completed, use bolts to lock and fix the two. The support rod assembly 3 on the other side is installed in the same way; the second step is to fix the two groups of support rod assemblies 4 between the two groups of support rod assemblies 3. The specific installation method is as follows: first, the connecting member 3 and the connecting member 4 are connected by the mounting head and the mounting cap to form a support long rod 2, and then the support short rod 2 is fastened and installed on the support long rod 2 by bolts. Three support short rods 2 are installed on the support long rod 2 on the side close to the transformer housing, and they are connected by bolts respectively. Four support short rods 2 are installed on the support long rod 2 on the side away from the transformer housing, and they are connected by bolts respectively. Then, the two groups of support rod assemblies 4 are installed and fixed by the two groups of fixing members 5 on the square tube 2.

[0038] Each test cable pulled out from the transformer body can be fixed on the supporting short rod one by winding and fixing, and the cables that need to adjust the position can be fixedly connected by hooks; each test cable pulled out from the supporting rod assembly two can be fixed on the supporting short rod two by winding and fixing, and then a certain length of cable can be pulled out for transformer testing. The design of this support frame scheme improves the existing fixing method, positioning method, carrying method, etc., which greatly improves work efficiency, shortens the downtime of the transformer, and indirectly improves the safety quality of construction. In addition, the design of this scheme reduces the possibility of falling from heights, the wiring is clear, and the possibility of miswiring is reduced. Moreover, due to the reduction in the number of times the main transformer is connected, the physical strength of the personnel is guaranteed, and the impact on safety in subsequent work is inestimable. It can be said that the application of this equipment is another safety guarantee in the pre-test work of the transformer.

[0039] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A portable fixture for fixing transformer test leads, comprising a transformer housing mounted on a transformer body, the transformer housing comprising six heat dissipation housings, a heat dissipation fin group comprising a plurality of heat dissipation fins arranged in an array on both sides of the heat dissipation housing, and a plurality of connecting rods arranged on the heat dissipation fin groups on both sides of the heat dissipation housing, wherein the transformer The outer shell is fixedly provided with a support frame 1 and a support frame 2; The support frame 1 is arranged on the upper side of the transformer housing, including a support rod assembly 1 arranged on both sides of the transformer housing and connected to the connecting rod, and a support rod assembly 2 arranged between the two support rod assemblies 1. The support rod assembly 2 includes a support long rod 1 and a plurality of support short rods 1 vertically arranged on the support long rod 1. Each test cable pulled out from the transformer body can be fixed on the support short rod 1 by winding and fixing. The support frame 2 is arranged on the front side of the transformer casing, and includes a support rod assembly 3 arranged on both sides of the transformer casing and connected to the connecting rod, and several support rod assemblies 4 arranged between the two support rod assemblies 3. The support rod assembly 4 includes a support long rod 2 and several support short rods 2 vertically arranged on the support long rod 2. Each test cable pulled out from the support rod assembly 2 can be fixed on the support short rod 2 by winding and fixing, and then a part of the length of the cable can be pulled out for transformer testing.

2. A portable and fixed transformer test lead fixture according to claim 1, characterized in that: A plurality of hooks are arranged on the supporting long rod, the hooks are in an "S"-shaped structure, and through holes are arranged on the hooks.

3. A portable and fixed transformer test lead fixture according to claim 1, characterized in that: The support rod assembly includes a square tube, a fixing part 1 fixed on one side wall of the square tube, a fixing part 2 and a fixing part 3 arranged at one end of the square tube; the fixing part 1 has an "L"-shaped structure; the fixing part 2 includes a main connecting body and several extension bodies, a groove is provided on one side wall of the main connecting body, and the extension bodies are arranged on the main connecting body walls on both sides of the groove. The extension bodies have an "L"-shaped structure, a threaded hole is provided in the groove, and a bolt is provided in the threaded hole.

4. A portable and fixed transformer test lead fixture according to claim 3, characterized in that: The fixing part three includes a fixing part body, a nut arranged on the fixing part body and a bolt arranged on the nut. The fixing part body is a "U"-shaped structure and an installation groove is provided in the fixing part body.

5. A portable and fixable transformer test lead fixture according to any one of claims 1 to 4, characterized in that: The support rod assembly three includes a square tube two, a fixing part four and several fixing parts five arranged on the square tube; the fixing part four has a "C"-shaped structure, including a connector one, a connector two and a connector three, the connector one is provided with bolts, the connector two has a flat plate structure, and is provided at one end of the connector one, the connector three has an "L"-shaped structure, and is provided at the other end of the connector one, and an opening is formed between the connector two and the connector three.

6. A portable and fixed transformer test lead fixture according to claim 5, characterized in that: The fixing member 5 includes a connector 4 in an L-shaped structure. A nut is provided on the connector 4, and a bolt is provided inside the nut. The upper end of the connector 4 is fixedly mounted on the second wall of the square tube.

7. A portable fixture for fixing transformer test leads according to claim 2, 3, 4 or 6, characterized in that: The supporting long rod 1 is composed of a connecting piece 1 and a connecting piece 2. There are four supporting short rods in total, which are respectively connected to the supporting long rod 1 through bolts. The supporting long rod 1 is provided with three sets of hooks.

8. The portable fixture for fixing transformer test leads according to claim 7, characterized in that: There are two support rod assemblies four, and the support long rod two is composed of a connecting piece three and a connecting piece four.

9. The portable fixture for fixing transformer test leads according to claim 8, characterized in that: Three short support rods 2 are provided on the long support rod 2 close to the transformer casing, and are respectively connected to the long support rod 2 by bolts; four short support rods 2 are provided on the long support rod 2 away from the transformer casing, and are respectively connected to the long support rod 2 by bolts.

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