Bolt fastening device for high-voltage equipment

Abstract

The utility model provides a bolt fastening device for high-voltage equipment, which comprises a bolt fastening operating rod and a bolt spare cap operating rod, the bolt fastening operating rod comprises a first insulating rod and a first sleeve connected to the first end of the first insulating rod, the size and the shape of the first sleeve are matched with those of a nut for fastening a sleeve of the high-voltage equipment, and the first sleeve is connected to the first end of the first insulating rod. The bolt standby cap operating rod comprises a second insulating rod, a connecting rod and a second sleeve, the connecting rod is connected to the first end of the second insulating rod and is of an L shape, the second sleeve is connected to the end, away from the second insulating rod, of the connecting rod, and the size and the shape of the second sleeve are matched with those of a screw used for fastening a high-voltage equipment sleeve. According to the bolt fastening device for the high-voltage equipment, on the premise that power failure is not needed, fastening of the sleeve bolt of the high-voltage equipment is achieved, contact resistance of electrical connection is reduced, and the temperature of a heating point of a transformer is made to return to normal.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment maintenance, and specifically relates to a bolt fastening device for high-voltage equipment. Background Art

[0002] In oil and gas processing stations of each oilfield, distribution transformers are important electrical components. Due to the maximum temperature difference within a year of the distribution transformer can reach 60°C, affected by thermal expansion and contraction and the vibration of the distribution transformer itself, the bolt connections of the distribution transformer bushings usually become loose, resulting in an increase in contact resistance, and then causing heating. Also, since the calorific value is proportional to the square of the contact resistance and the current, therefore, the distribution transformer may even be burned out under heavy load conditions.

[0003] Due to the particularity of the operation of the oil and gas processing station, after the bushing of the distribution transformer gets hot, if power outage treatment is adopted, it will lead to natural gas venting, the shutdown of the oil and gas processing station, and ultimately cause significant economic losses. Therefore, it is necessary to develop a set of tools for tightening the bolts of the distribution transformer live, so as to handle the hidden danger of heating caused by bolt loosening without power outage. Summary of the Utility Model

[0004] An object of the utility model is to provide a bolt fastening device for high-voltage equipment, which can realize the fastening of the bolts of the high-voltage equipment bushing without power outage, reduce the contact resistance of the electrical connection, and make the temperature of the heating point of the transformer return to normal.

[0005] According to the utility model, a bolt fastening device for high-voltage equipment is provided, including: a bolt fastening operating rod and a bolt cap operating rod. The bolt fastening operating rod includes a first insulating rod and a first sleeve connected to the first end of the first insulating rod. The size and shape of the first sleeve are adapted to the nut for fastening the bushing of the high-voltage equipment. The bolt cap operating rod includes: a second insulating rod, a connecting rod, and a second sleeve. The connecting rod is connected to the first end of the second insulating rod and is configured in an L shape. The second sleeve is connected to the end of the connecting rod away from the second insulating rod. The size and shape of the second sleeve are adapted to the screw rod for fastening the bushing of the high-voltage equipment.

[0006] In a preferred embodiment, the bolt fastening operating rod further includes a horizontal rod connected to the second end of the first insulating rod, and the horizontal rod is perpendicular to the first insulating rod.

[0007] In a preferred embodiment, the bolt cap operating rod further includes a grip connected to the second end of the second insulating rod.

[0008] In a preferred embodiment, the interior of the first sleeve at the connection end with the first insulating rod is configured with threads. A connection head is provided at the first end of the first insulating rod, and the first sleeve is threadedly connected to the connection head. The size and shape of the inner wall of the first sleeve at the end far from the first insulating rod are adapted to the nut of the high-voltage equipment bushing.

[0009] In a preferred embodiment, a connection female head is provided at the second end of the first insulating rod. A groove is configured inside the connection female head. A convex portion is provided on the outer wall of the horizontal rod, and the convex portion is threadedly connected to the connection female head.

[0010] In a preferred embodiment, the interior of the second sleeve at the connection end with the connecting rod is configured with threads. A connection portion is provided at the end of the connecting rod far from the second insulating rod, and the second sleeve is threadedly connected to the connection portion. The size and shape of the inner wall of the second sleeve at the end far from the connecting rod are adapted to the screw of the high-voltage equipment bushing.

[0011] In a preferred embodiment, both the first insulating rod and the second insulating rod are made of epoxy resin material.

[0012] In a preferred embodiment, the lengths of both the first insulating rod and the second insulating rod are greater than 80 cm.

[0013] In a preferred embodiment, the length of the horizontal rod is 20 cm.

[0014] In a preferred embodiment, the grip is made of insulating material.

[0015] The utility model has at least the following technical effects:

[0016] According to the utility model, a bolt tightening operating rod and a bolt backup nut operating rod are provided. The bolt tightening operating rod includes a first insulating rod and a first sleeve connected to the first end of the first insulating rod, and the size and shape of the first sleeve are adapted to the nut for tightening the high-voltage equipment bushing. The bolt backup nut operating rod includes: a second insulating rod, a connecting rod, and a second sleeve. The connecting rod is connected to the first end of the second insulating rod and is configured as an L shape. The second sleeve is connected to the end of the connecting rod far from the second insulating rod, and the size and shape of the second sleeve are adapted to the screw for tightening the high-voltage equipment bushing. Thus, it is possible to tighten the bolts of the high-voltage equipment bushing without power cut, reduce the contact resistance of the electrical connection, and make the temperature of the heat generation point of the transformer return to normal. In addition, through the mutual cooperation of the bolt tightening operating rod and the bolt backup nut operating rod, the insulation and safety distance can be guaranteed during the tightening process, and at the same time, slipping can be avoided when turning the bolt, improving the tightening efficiency. Description of the Drawings

[0017] Figure 1 Schematically shown is a schematic diagram of the overall structure of a bolt fastening device for high-voltage equipment according to an embodiment of the present invention.

[0018] In this application, all the drawings are schematic drawings, only used to illustrate the principle of the present invention and not drawn to actual scale. Detailed implementation manners

[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention. In addition, in the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the present invention, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.

[0021] As Figure 1 shown, the bolt fastening device 100 for high-voltage equipment described in the present invention includes: a bolt fastening operating rod 1 and a bolt backup nut operating rod 2. Among them, the bolt fastening operating rod 1 includes a first insulating rod 11 and a first sleeve 12 detachably connected to the first end of the first insulating rod 11. The size and shape of the first sleeve 12 are adapted to the nut of the distribution transformer bushing. The bolt backup nut operating rod 2 includes: a second insulating rod 21, a connecting rod 22, and a second sleeve 23. The connecting rod 22 is connected to the first end of the second insulating rod 21 and is configured in an L shape. The second sleeve 23 is connected to the end of the connecting rod 22 away from the second insulating rod 21. The size and shape of the second sleeve 23 are adapted to the screw of the distribution transformer bushing. The nut and screw of the distribution transformer bushing are used to fasten the distribution transformer bushing.

[0022] The usage method of the bolt fastening device 100 for high-voltage equipment according to the present utility model will be described below. First, place the insulating partition between the various bushings of the transformer to prevent short circuits; according to the nut size and shape of the bushing of the distribution transformer, select the corresponding first sleeve 12 and install it on the first end of the first insulating rod 11; according to the screw size and shape of the bushing of the distribution transformer, select the corresponding second sleeve 23 and install it on the end of the connecting rod 22 away from the second insulating rod 21. After operator A wears insulating boots and insulating gloves, install the first sleeve 12 of the bolt fastening operating rod 1 onto the nut of the bushing bolt of the distribution transformer. After operator B wears insulating boots and insulating gloves, install the second sleeve 23 of the bolt cap operating rod 2 onto the screw of the bushing bolt of the distribution transformer. Operator A holds the insulating grip 24 with one hand and the horizontal rod 13 with the other hand and rotates clockwise to perform the bolt fastening operation on the bushing bolt of the distribution transformer.

[0023] According to the present utility model, there are provided a bolt fastening operating rod 1 and a bolt cap operating rod 2. The bolt fastening operating rod 1 includes a first insulating rod 11 and a first sleeve 12 connected to the first end of the first insulating rod 11, and the size and shape of the first sleeve 12 are adapted to the nut for fastening the bushing of the high-voltage equipment. The bolt cap operating rod 2 includes: a second insulating rod 21, a connecting rod 22, and a second sleeve 23. The connecting rod 22 is connected to the first end of the second insulating rod 21 and is configured in an L shape. The second sleeve 23 is connected to the end of the connecting rod 22 away from the second insulating rod 21, and the size and shape of the second sleeve are adapted to the screw for fastening the bushing of the high-voltage equipment. Thus, it is possible to fasten the bushing bolts of the high-voltage equipment without power outage, reduce the contact resistance of the electrical connection, and make the temperature of the heat generation point of the transformer return to normal. In addition, through the mutual cooperation of the bolt fastening operating rod 1 and the bolt cap operating rod 2 and the connecting rod 22 being configured in an L shape, it is convenient for the operator to stand during the fastening process, ensuring insulation and safety distance, and at the same time being able to avoid slipping when turning the bolt, improving the fastening efficiency.

[0024] In one or more embodiments, the bolt fastening operating rod 1 further includes a horizontal rod 13 connected to the second end of the first insulating rod 11. The horizontal rod 13 is perpendicular to the first insulating rod 11, and the horizontal rod 13 can ensure the torque during the fastening operation.

[0025] In one or more embodiments, the bolt cap operating rod 2 further includes a grip 24 connected to the second end of the second insulating rod 21 for facilitating the bolt fastening operation.

[0026] In one or more embodiments, the first sleeve 12 is constructed with threads inside the connection end with the first insulating rod 11. A connection head 111 is provided at the first end of the first insulating rod 11. The outer wall of the connection head 111 has threads. The first sleeve 12 is threadedly connected to the connection head 111. The size and shape of the inner wall of the first sleeve 12 at the end away from the first insulating rod 11 are adapted to the nut of the distribution transformer bushing.

[0027] In one or more embodiments, a connection female head 112 is provided at the second end of the first insulating rod 11. The connection female head 112 is internally constructed with a groove, and the wall surface of the groove is provided with threads. The horizontal rod 13 is provided with a convex portion on its outer wall. The outer wall of the convex portion is provided with threads. The convex portion is threadedly connected to the connection female head 112.

[0028] In one or more embodiments, the second sleeve 23 is constructed with threads inside the connection end with the connecting rod 22. A connection portion 221 is provided at the end of the connecting rod 22 away from the second insulating rod 21. The outer wall of the connection portion 221 has threads. The second sleeve 23 is threadedly connected to the connection portion 221. The size and shape of the inner wall of the second sleeve 23 at the end away from the connecting rod 22 are adapted to the screw rod of the distribution transformer bushing.

[0029] In one or more embodiments, both the first insulating rod 11 and the second insulating rod 21 are made of epoxy resin material to be able to withstand a high voltage of 40 kV.

[0030] In one or more embodiments, the lengths of both the first insulating rod 11 and the second insulating rod 21 are greater than 80 cm, meeting the safety working distance regulations for live equipment at 10 kV and below.

[0031] In one or more embodiments, the length of the horizontal rod 13 is 20 cm, which is used to provide sufficient torque to tighten the high-voltage equipment bushing bolts.

[0032] In one or more embodiments, the grip 24 is made of insulating material.

[0033] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bolt fastening device for high-voltage equipment, characterized in that: include: Bolt tightening operating lever and bolt cap operating lever, The bolt tightening operating rod comprises a first insulating rod and a first sleeve connected to a first end of the first insulating rod, wherein the size and shape of the first sleeve are adapted to a nut for tightening the bushing of the high-voltage equipment. The bolt cap operating rod includes: a second insulating rod, a connecting rod and a second sleeve, wherein the connecting rod is connected to the first end of the second insulating rod and is configured in an L shape, and the second sleeve is connected to the end of the connecting rod away from the second insulating rod, and the size and shape of the second sleeve are adapted to the screw used to fasten the bushing of the high-voltage equipment.

2. The bolt fastening device for high-voltage equipment according to claim 1, characterized in that: The bolt tightening operation rod also includes a horizontal rod connected to the second end of the first insulating rod, and the horizontal rod is perpendicular to the first insulating rod.

3. The bolt fastening device for high-voltage equipment according to claim 1 or 2, characterized in that: The bolt cap preparation operating rod also includes a handle connected to the second end of the second insulating rod.

4. The bolt fastening device for high-voltage equipment according to claim 2, characterized in that: The first sleeve is constructed with threads inside the connection end with the first insulating rod, the first end of the first insulating rod is provided with a connecting head, the first sleeve is threadedly connected to the connecting head, and the size and shape of the inner wall of the first sleeve at the end away from the first insulating rod are adapted to the nut of the high-voltage equipment bushing.

5. The bolt fastening device for high-voltage equipment according to claim 4, characterized in that: A connecting female head is arranged at the second end of the first insulating rod, a groove is constructed inside the connecting female head, and a convex portion is arranged on the outer wall of the horizontal rod, and the convex portion is threadedly connected with the connecting female head.

6. The bolt fastening device for high-voltage equipment according to claim 1, characterized in that: The second sleeve is constructed with a thread inside the connection end with the connecting rod, and a connecting portion is provided at the end of the connecting rod away from the second insulating rod. The second sleeve is threadedly connected to the connecting portion, and the size and shape of the inner wall of the second sleeve at the end away from the connecting rod are adapted to the screw rod of the high-voltage equipment bushing.

7. The bolt fastening device for high-voltage equipment according to claim 1, characterized in that: The first insulating rod and the second insulating rod are both made of epoxy resin material.

8. The bolt fastening device for high-voltage equipment according to claim 1, characterized in that: The lengths of the first insulating rod and the second insulating rod are both greater than 80 cm.

9. The bolt fastening device for high-voltage equipment according to claim 2, characterized in that: The length of the horizontal rod is 20 cm.

10. The bolt fastening device for high-voltage equipment according to claim 3, characterized in that: The handle is made of insulating material.

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