CN219610065U - A high pressure bushing - Google Patents

Abstract

The utility model relates to the technical field of power engineering and discloses a high-voltage sleeve, which comprises a conducting rod and a water flowing pipe, wherein the conducting rod is inserted into a cavity of the water flowing pipe, the two opposite end wall surfaces of the water flowing pipe are fixedly connected with water conveying pipes respectively for water inlet and water outlet, an evacuation component for guiding cooling water and increasing the inner surface area of the water flowing pipe is arranged in the cavity of the water flowing pipe, low-temperature water is conveyed into the water flowing pipe through the water conveying pipe on the left end surface of the water flowing pipe and is discharged through another water conveying pipe, when the cooling water passes through the cavity of the water flowing pipe, the cooling water is blocked through a plurality of partitions, a serpentine bent flowing track is formed when the cooling water is matched with a plurality of partition cavities, so that the retention time of the cooling water in the cavity of the water flowing pipe is increased, the sufficient heat exchange of the water flowing pipe and a cooling medium is ensured, the cooling effect of the water flowing pipe is improved, and meanwhile, the contact area between the water flowing pipe and the cooling water can be increased, and the heat absorption and the cooling of the conducting rod are further promoted.

Description

A high voltage bushing

technical field

The utility model belongs to the technical field of electric power engineering, in particular to a high-voltage bushing.

Background technique

The prior art discloses a conductive rod and a high-voltage bushing (CN202111183607.4), which relates to the technical field of high-voltage power transmission. The conductive rod is hollow inside, and a channel is formed along the axial direction. The channel is provided with a water flow tube. The extension direction of the water flow tube and the channel The extension direction is the same; cooling water flows inside the water flow tube to absorb the heat generated by the conductive rod; there is a gap between the water flow tube and the conductive rod, and the gap is filled with a liquid insulating medium for heat transfer;

In the prior art, the water pipe is arranged in the cavity of the conductive rod, and the cooling water flowing inside the water pipe is combined with the insulating medium between the conductive rod and the outer wall of the water pipe to realize the heat dissipation and cooling of the conductive rod, and the cooling water flows through the water pipe chamber At this time, since the inside of the water pipe is a smooth channel, the cooling water is directly discharged from the water pipe along the radial direction of the water pipe, and the contact time and contact area between the cooling water and the water pipe are limited, which limits the cooling effect on the conductive rod, and there is a certain room for optimization.

In view of this, the utility model is proposed.

Utility model content

In order to solve the problems of the technologies described above, the basic idea of the technical solution adopted by the utility model is:

A high-voltage bushing, including a conductive rod and a water pipe, the conductive rod is inserted into the cavity of the water pipe, a sandwich space is formed between the water pipe and the inner wall of the conductive rod, a cooling medium is injected into the interlayer space, and the wall of the conductive rod is fixedly connected with an end The end plate is fixedly connected with the end surface of the conductive rod and the port of the conductive rod is blocked. The opposite ends of the water pipe are fixedly connected with water supply pipes for water inlet and drainage respectively. The cavity of the water pipe is provided with a pair of cooling water Evacuation components that direct and increase the internal surface area of the flow pipe.

As a preferred embodiment of the present utility model, the evacuation assembly is a plurality of partitions equidistantly arranged in the flow pipe cavity, and a spacer cavity is formed between two adjacent partitions, and the wall surface of each spacer cavity is provided with the same The communication groove, the interval cavity and the communication groove form a serpentine curved channel in the conductive rod cavity.

As a preferred embodiment of the present invention, the water flow pipe is a hollow circular pipe partitioned as a circular plate with the same diameter as the inner diameter of the conductive rod cavity, and the partition and the circumferential surface are fixedly connected to the inner wall of the water flow pipe.

As a preferred embodiment of the present invention, the communication groove is set on the circumferential surface of the partition and extends toward the center of the partition. The communication groove is a rectangular plate and the length of the communication groove is smaller than the radius of the partition. Two adjacent partitions The connecting grooves on the wall are misplaced.

As a preferred embodiment of the present utility model, the evacuation assembly is a plurality of guide plates equidistantly arranged in the water flow lumen, a backflow groove is formed between two adjacent guide plates, and the guide plates are in the flow water lumen A trumpet-shaped channel is formed.

As a preferred embodiment of the present utility model, the guide plate is funnel-shaped, the flow pipe is a circular pipe, the outer peripheral surface of the port with a larger diameter of the guide plate is fixedly connected with the flow pipe, and the smaller opening of each guide plate set in the same direction.

As a preferred embodiment of the present utility model, the smaller opening of the guide plate extends into the larger opening of another adjacent guide plate, the two adjacent guide plates do not touch, and the smaller opening of the guide plate and The cooling water flows in the same direction.

Compared with the prior art, the utility model has the following beneficial effects:

1. The low-temperature water is sent into the water pipe through the water delivery pipe on the left end of the water pipe and discharged through another water pipe. When the cooling water passes through the water pipe cavity, the cooling water passes through the barriers of multiple partitions and cooperates with the connecting groove on the wall of the partition. , when the cooling water flows from the left compartment cavity to another adjacent compartment cavity, the cooling water passes through the communication groove, due to the misalignment of the communication grooves on the two adjacent partition walls, the communication grooves on the two adjacent partition walls are clamped The angle is 90 degrees, and the cooling water flow track changes direction, forming a serpentine and curved flow track when passing through multiple compartments, increasing the residence time of the cooling water in the flow tube cavity to ensure sufficient heat exchange between the flow tube and the cooling medium. Improve the cooling effect on the conductive rod. At the same time, multiple partitions can increase the contact area between the flow pipe and the cooling water, and further promote the heat absorption and cooling of the conductive rod.

2. The cooling water sent into the flow pipe cavity through the water supply pipe flows from left to right, the cooling water impacts the first guide plate, and is guided by the concave surface of the guide plate to the larger opening of the other guide plate, so reciprocating, The cooling water is guided by the guide plate until it is delivered to be discharged by another water delivery pipe. Since the diameter of the smaller diameter opening of each guide plate decreases uniformly, the flow rate of the cooling water gradually increases, and multiple guide plates form a channel similar to a Tesla valve. , on the basis of increasing the contact area between the flow pipe and the cooling water and improving the residence time of the cooling water, the efficiency of the cooling water flowing through the flow pipe chamber can be taken into account. It will impact to the left due to the action of water hammer, but the cold water will enter the backflow tank and impact and guide the plate to increase the resistance of cooling water backflow, slow down the action of water hammer, and avoid impact on the conductive rod, water pipe and water delivery pipe And vibration, the operation safety is higher.

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in further detail.

Description of drawings

In the attached picture:

Fig. 1 is a perspective view of the utility model;

Fig. 2 is an exploded diagram of an evacuation assembly according to the embodiment of the present invention;

Fig. 3 is an exploded view of the evacuation structure of the second embodiment of the utility model.

In the figure: 10, conductive rod; 11, running water pipe; 12, water delivery pipe; 13, end plate; 20, partition; 21, interval cavity; 22, connecting groove; 30, guide plate;

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used for illustration The utility model.

Embodiment 1: A high-voltage bushing, as shown in Figures 1-2, includes a conductive rod 10 and a water pipe 11, the conductive rod 10 is inserted into the cavity of the water pipe 11, and the inner wall surface between the water pipe 11 and the conductive rod 10 A mezzanine space is formed, a cooling medium is injected into the mezzanine space, the end plate 13 is fixedly connected to the wall surface of the conductive rod 10, the end plate 13 is fixedly connected to the end surface of the conductive rod 10 and the port of the conductive rod 10 is blocked, and the opposite ends of the water pipe 11 are The walls are fixedly connected with water supply pipes 12 for water intake and drainage respectively. The cavity of the water flow pipe 11 is provided with evacuation components for guiding the cooling water and increasing the inner surface area of the flow water pipe 11. The evacuation components are equidistantly arranged on the flow pipes. There are several partitions 20 in the 11 cavity, a spacer cavity 21 is formed between two adjacent partitions 20, and the wall surface of each spacer cavity 21 is provided with the same communication groove 22, and the spacer cavity 21 and the communication groove 22 are in the cavity of the conductive rod 10. A serpentine curved channel is formed inside, the flow pipe 11 is a hollow circular pipe, the partition 20 is a circular plate with the same diameter as the inner diameter of the conductive rod 10, the partition 20 is fixedly connected with the circumferential surface and the inner wall of the flow pipe 11, and the communication The groove 22 is set on the circumferential surface of the partition 20 and extends toward the center of the partition 20. The communication groove 22 is a rectangular plate and the length of the communication groove 22 is smaller than the radius of the partition 20. The communication grooves 22 on the walls of two adjacent partitions 20 are misplaced. , in this solution, by injecting the cooling medium into the interlayer space between the conductive rod 10 and the water pipe 11, the cooling medium has good thermal conductivity and fluidity, and can be used as a heat transfer medium between the conductive rod 10 and the water pipe 11, To speed up the heat exchange efficiency between the two, it has a high flash point at the same time, it is not easy to burn, and there is no danger of burning due to excessive temperature. The water supply pipe 12 on the left end of the flow pipe 11 sends the low-temperature water to the flow water The pipe 11 is discharged through another water delivery pipe 12. When the cooling water passes through the cavity of the flow pipe 11, the cooling water passes through the barriers of a plurality of partitions 20, and cooperates with the communication groove 22 on the wall of the partition 20. When the cooling water passes through the left partition When the chamber 21 flows to another adjacent interval chamber 21, the cooling water passes through the communication groove 22. Due to the dislocation of the communication grooves 22 on the walls of two adjacent partitions 20, the included angle between the communication grooves 22 on the walls of two adjacent partitions 20 is Ninety degrees, the cooling water flow trajectory reverses, forming a serpentine curved flow trajectory when passing through multiple interval cavities 21, increasing the residence time of cooling water in the flow pipe 11 to ensure sufficient heat exchange between the flow pipe 11 and the cooling medium , improve the cooling effect on the conductive rod 10, and at the same time, the plurality of partitions 20 can increase the contact area between the flow pipe 11 and the cooling water, and further promote the heat absorption and cooling of the conductive rod 10.

Embodiment 2: A high-voltage bushing, as shown in Figure 1 and Figure 3, includes a conductive rod 10 and a water pipe 11, the conductive rod 10 is inserted into the cavity of the water pipe 11, and the inner wall surface between the water pipe 11 and the conductive rod 10 A mezzanine space is formed, a cooling medium is injected into the mezzanine space, the end plate 13 is fixedly connected to the wall surface of the conductive rod 10, the end plate 13 is fixedly connected to the end surface of the conductive rod 10 and the port of the conductive rod 10 is blocked, and the opposite ends of the water pipe 11 are The walls are fixedly connected with water supply pipes 12 for water intake and drainage respectively. The cavity of the water flow pipe 11 is provided with evacuation components for guiding the cooling water and increasing the inner surface area of the flow water pipe 11. The evacuation components are equidistantly arranged on the flow pipes. A number of guide plates 30 in the 11 cavity form a backflow groove 31 between two adjacent guide plates 30, and the guide plates 30 form a trumpet-shaped passage in the cavity of the water pipe 11, and the guide plates 30 are funnel-shaped, and the flow pipe 11 is a circular pipe, the outer peripheral surface of the larger diameter port of the guide plate 30 is fixedly connected with the flow pipe 11, the smaller opening of each guide plate 30 is set in the same direction, and the smaller opening of the guide plate 30 extends to the adjacent In the larger opening of the other guide plate 30, two adjacent guide plates 30 do not touch, and the smaller opening of the guide plate 30 is consistent with the flow direction of the cooling water. In this solution, as a further optimization, it should be understood that, The cooling water sent into the cavity of the water pipe 11 through the water delivery pipe 12 flows from left to right, the cooling water hits the first guide plate 30, and is guided by the concave surface of the guide plate 30 to the larger opening of the other guide plate 30, Reciprocating in this way, the cooling water is guided by the guide plate 30 until it is delivered to be discharged by another water delivery pipe 12. Since the opening diameters of the smaller diameters of each guide plate 30 decrease uniformly, the cooling water flow rate gradually increases, and a plurality of guide plates 30 form a section similar to Based on the channel of the Tesla valve, on the basis of increasing the contact area between the flow pipe 11 and the cooling water and improving the residence time of the cooling water, it can take into account the efficiency of the cooling water flowing through the chamber of the flow pipe 11. 12. When sending water, the cooling water flowing back will impact to the left due to the water hammer, but the cooling water will enter the backflow groove 31 and impact and be guided by the plate 30 to increase the resistance of the cooling water backflow and slow down the water hammer. Avoid causing impact and vibration to the conductive rod 10, the water flow pipe 11 and the water delivery pipe 12, and the operation safety is higher.

Working principle: By injecting a cooling medium into the interlayer space between the conductive rod 10 and the water pipe 11, the cooling medium has good thermal conductivity and fluidity, and can be used as a heat transfer medium between the conductive rod 10 and the water pipe 11 to speed up the process of both. The heat exchange efficiency between them has a high flash point at the same time, it is not easy to burn, and there is no danger of burning due to excessive temperature. The low-temperature water is sent to the water pipe 11 through the water delivery pipe 12 on the left end of the water pipe 11 And it is discharged through another water delivery pipe 12. When the cooling water passes through the cavity of the flow pipe 11, the cooling water passes through the barriers of a plurality of partitions 20, cooperates with the communication groove 22 on the wall of the partition 20, and when the cooling water flows from the left compartment 21 to the When the other adjacent compartment 21, the cooling water passes through the communication groove 22, because the communication grooves 22 on the walls of two adjacent partitions 20 are dislocated, the angle between the communication grooves 22 on the walls of two adjacent partitions 20 is 90 degrees , the flow path of cooling water is reversed, and a serpentine curved flow path is formed when passing through a plurality of interval cavities 21, or the cooling water sent into the cavity of the flow pipe 11 through the water supply pipe 12 flows from left to right, and the cooling water impacts the first The guide plate 30 is guided by the concave surface of the guide plate 30 and transported to the larger opening of the other guide plate 30, so reciprocating, the cooling water is guided by the guide plate 30 until it is transported to be discharged by another water delivery pipe 12, because each guide plate 30 The diameter of the opening with a smaller diameter decreases evenly, and the flow rate of cooling water increases gradually. Multiple guide plates 30 form a channel similar to a Tesla valve. On the basis of increasing the contact area between the flow pipe 11 and the cooling water and increasing the residence time of the cooling water , can take into account the efficiency of the cooling water flowing through the chamber of the flow pipe 11. At the same time, when the valve is suddenly closed to stop sending water to the water supply pipe 12, the backflow cooling water will impact to the left due to the water hammer, but the cold water will enter the return flow. The flow groove 31 is impacted and the guide plate 30 is added to increase the resistance of the cooling water to flow back.

It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalents can be made to these features and embodiments without departing from the spirit and scope of the utility model replace. In addition, the features and embodiments may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the utility model is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the application belong to the protection scope of the utility model.

Claims (7)

1. A high-voltage bushing, comprising a conductive rod (10) and a water pipe (11), the conductive rod (10) is inserted into the cavity of the water pipe (11), and the inner wall surface of the water pipe (11) and the conductive rod (10) is A sandwich space is formed between the interlayer spaces, a cooling medium is injected into the interlayer space, and an end plate (13) is fixedly connected to the wall surface of the conductive rod (10), and the end plate (13) is fixedly connected to the end surface of the conductive rod (10) and connects the conductive rod (10) The ports are blocked, and the walls at both ends of the flow pipe (11) are fixedly connected with water supply pipes (12) for water intake and drainage. Evacuation assembly that increases the internal surface area of the flow pipe (11). 2. The high-voltage bushing according to claim 1, characterized in that, the evacuation components are several partitions (20) equidistantly arranged in the cavity of the flow pipe (11), and two adjacent partitions (20) Interval cavities (21) are formed between them, and the wall of each interval cavity (21) is provided with the same communication groove (22), and the interval cavity (21) and communication groove (22) form a serpentine shape in the cavity curved channel. 3. The high-voltage bushing according to claim 2, characterized in that, the flow pipe (11) is a hollow circular pipe, and the partition (20) is a circular plate with the same diameter as the inner diameter of the conductive rod (10), and the partition (20) is (20) is fixedly connected with the circumferential surface and the inner wall surface of the flow pipe (11). 4. The high-voltage bushing according to claim 2, characterized in that, the communication groove (22) is opened on the circumferential surface of the partition (20) and extends toward the center of the partition (20), and the communication groove (22) It is a rectangular plate, and the length of the communication groove (22) is smaller than the radius of the partition (20), and the communication grooves (22) on the wall surfaces of two adjacent partitions (20) are dislocated. 5. The high-voltage bushing according to claim 1, characterized in that, the evacuation assembly is a plurality of guide plates (30) equidistantly arranged in the cavity of the flow pipe (11), and two adjacent guide plates (30) ) to form a reflux groove (31), and the guide plate (30) forms a trumpet-shaped channel in the cavity of the flow pipe (11). 6. The high-voltage bushing according to claim 5, characterized in that, the guide plate (30) is funnel-shaped, the flow pipe (11) is a circular pipe, and the outer circumference of the larger-diameter port of the guide plate (30) The surface is fixedly connected with the flow pipe (11), and the smaller openings of each guide plate (30) are arranged in the same direction. 7. The high-voltage bushing according to claim 5, characterized in that, the smaller opening of the guide plate (30) extends into the larger opening of the other adjacent guide plate (30), and the two adjacent guide plates (30) The guide plates (30) are not in contact, and the smaller openings of the guide plates (30) are consistent with the flow direction of the cooling water.