Vacuum contactor with circulating water cooling equipment

Abstract

The invention relates to the technical field of vacuum contactors, in particular to a vacuum contactor with circulating water cooling equipment, which comprises a plurality of groups of vacuum contactor bodies and arc-shaped cooling pipelines arranged above the vacuum contactor bodies, the vacuum contactor body is installed on the bearing base through bolts, the arc-shaped cooling pipeline is installed on the bearing base through a positioning mechanism and used for conducting heat dissipation and cooling on the top of the vacuum contactor body, two second cooling holes are machined in the bottom of the bearing base, and linear cooling pipelines are fixedly connected into the second cooling holes. The heat radiator is used for radiating and cooling the bottom of the vacuum contactor body; the bottom of the vacuum contactor body is basically in a sealed state in the bearing base, so that the vacuum contactor body is cooled by adopting a linear cooling pipeline, and the space at the top of the vacuum contactor body is generally open, so that the top of the vacuum contactor body is cooled by adopting an arc-shaped cooling pipeline; and the heat dissipation effect is uniform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum contactors, in particular to a vacuum contactor with a circulating water cooling device. BACKGROUND

[0002] A vacuum contactor uses a vacuum arc-extinguishing chamber to extinguish arc, and is used to frequently turn on and off normal working current, and is usually used for remotely turning on and off medium and low voltage frequently start-stop AC motors. The vacuum contactor is usually composed of an insulating frame, a metal base, a transmission crank arm, an electromagnetic system, an auxiliary switch and a vacuum switch tube. When the electromagnetic coil is powered by a control voltage, the armature drives the crank arm to rotate, so that the main contact in the vacuum switch tube is connected. After the electromagnetic coil is powered off, the main contact is disconnected due to the action of the opening spring. The vacuum contactor has strong arc-extinguishing ability, good withstand voltage performance, high operation frequency, long service life, no arc ejection, small size, light weight and long maintenance period. The vacuum contactor has high process requirements during manufacturing. If the process is poor, the vacuum of the arc-extinguishing chamber will easily decrease. If the material quality of the contact is poor, the "current chopping overvoltage" phenomenon will occur when the current is disconnected, that is, when the current is disconnected, the arc current is not naturally zero when the arc-extinguishing ability of the vacuum arc-extinguishing chamber is very strong, but suddenly decreases from a certain value to zero, thereby causing high overvoltage. The current chopping voltage will endanger the safe operation of electrical equipment.

[0003] At present, the vacuum contactor usually does not need to be cooled, and only needs to ensure that the installation environment of the vacuum contactor is not high in temperature and has good ventilation, so that the heat generated by the contact resistance in the vacuum contactor can be dissipated. However, with the development of the times, the use environment of the vacuum contactor has changed. When the vacuum contactor is used in a high-temperature or humid environment, it cannot be cooled and dissipated in time, which can easily cause oxidation of the contact or failure of the mechanical parts.

[0004] According to the search, the patent with the Chinese patent application number 202411368836.7 discloses a vacuum contactor with a water cooling mechanism, which comprises a cooling structure, the cooling structure comprises an outer shell formed by the mutual cooperation and combination of a first shell and a second shell, the outer shell is sleeved outside the ceramic body at the contact position of the vacuum interrupter body of the contactor, and the cooling cavity formed between the inner wall of the outer shell and the outer wall of the ceramic body at the contact position of the vacuum interrupter is divided into a spiral cooling cavity by a spiral partition. The application forms a wrapping shell outside the ceramic body at the contact position of the contactor by using the two combined shells, and a spiral cooling cavity for injecting cooling liquid is formed between the shell and the ceramic body. After the cooling liquid is injected, heat exchange cooling is performed to quickly reduce the temperature at the contact position, and the two cooling methods of immersion cooling and atomized spraying can be used for cooling liquid cooling. The above patent has the following disadvantages: the immersion cooling and atomized spraying cooling in the above patent will cause the water to be unable to be recycled, and the immersion cooling and atomized spraying cooling will cause the installation environment of the vacuum contactor to be humid, affecting the heat dissipation effect.

[0005] The application provides a vacuum contactor with a circulating water cooling device. SUMMARY

[0006] In view of the above-mentioned defects of the prior art, the application provides a vacuum contactor with a circulating water cooling device, which can effectively solve the existing problems.

[0007] To achieve the above-mentioned purposes, the application is implemented by the following technical solutions: The application provides a vacuum contactor with a circulating water cooling device, which comprises a plurality of vacuum contactor bodies and an arc-shaped cooling pipeline arranged above the vacuum contactor bodies. The vacuum contactor bodies are installed on a bearing base by bolts, the arc-shaped cooling pipeline is installed on the bearing base by a positioning mechanism, and is used for cooling the top of the vacuum contactor body. Two second cooling holes are formed in the bottom of the bearing base, and straight cooling pipelines are fixedly connected in the second cooling holes and are used for cooling the bottom of the vacuum contactor body.

[0008] Further, the arc-shaped cooling pipeline comprises an arched pipeline in the middle section and two connecting pipelines in the edge sections.

[0009] Further, the arched pipeline in the middle section is a hose, and the connecting pipelines in the edge sections are hard pipes.

[0010] Further, two first cooling holes are formed in the top of the bearing base, and limit holes are formed in the top of the connecting pipelines.

[0011] Further, the positioning mechanism comprises a positioning base fixed inside the first cooling hole, one end of the positioning base is fixedly connected with a through connecting rod, the through connecting rod is fixed inside the limiting hole, the bottom of the through connecting rod is fixedly connected with a base connecting rod, one end of the base connecting rod is connected with a zigzag connecting rod through a hinge, and one end of the zigzag connecting rod is connected with a resisting connecting rod through a hinge.

[0012] Further, the base connecting rod, the zigzag connecting rod and the resisting connecting rod are located inside the arc-shaped cooling pipeline, and two resisting connecting rods located inside the same arc-shaped cooling pipeline are fixedly connected with a resisting block, and the top of the resisting block is fixedly connected inside the arc-shaped pipeline.

[0013] Still further, the zigzag connecting rod is connected with two connecting rods through hinges, so as to maintain the arc of the arc-shaped pipeline.

[0014] Still further, the adjacent arc-shaped cooling pipelines are fixedly connected with connecting valves, and the connecting valves are fixed on the bearing base through the H-shaped frame.

[0015] Still further, the two arc-shaped cooling pipelines are located at the head and tail of the vacuum contactor body respectively, and the zigzag connecting rod and the resisting connecting rod support the arc of the arc-shaped pipeline. Beneficial effects

[0016] Compared with the known prior art, the technical scheme provided by the application has the following beneficial effects: The bottom of the vacuum contactor body is basically in a sealed state inside the bearing base, so a linear cooling pipeline in a linear shape is used for heat dissipation, and the space at the top of the vacuum contactor body is generally open, so an arc-shaped cooling pipeline in an arc shape is used for heat dissipation at the top of the vacuum contactor body, so that the heat dissipation effect is more uniform. The arc-shaped cooling pipeline is rotated by rotating the positioning base, so that the arc-shaped cooling pipeline and the positioning mechanism as a whole are rotated along the central axis of the first cooling hole, and then the vacuum contactor body is exposed, which is convenient for maintenance. The connecting rod is installed on one side of the mounting seat of the vacuum contactor body, so that the connecting rod abuts against the middle lower part of the arc-shaped pipeline, the height of the arc-shaped pipeline is ensured to be unchanged, then the positioning base is reversely rotated, so that the arc-shaped cooling pipeline moves to the middle position of the vacuum contactor body, at this time, since the height of the arc-shaped pipeline is unchanged and the arc-shaped pipeline is a flexible pipe, the zigzag connecting rod and the resisting connecting rod inside the arc-shaped pipeline are rotated, so that the arc-shaped cooling pipeline does not contact the vacuum contactor body when it is close to the middle position of the vacuum contactor body, and the uniform heat dissipation and cooling effect is ensured, and the practicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0018] Figure 1 The overall structure schematic diagram of the vacuum contactor with the circulating water cooling equipment of the present application; Figure 2 The back structure schematic diagram of the vacuum contactor with the circulating water cooling equipment of the present application; Figure 3 The single vacuum contactor body structure schematic diagram of the vacuum contactor with the circulating water cooling equipment of the present application; Figure 4 The single vacuum contactor body explosion structure schematic diagram of the vacuum contactor with the circulating water cooling equipment of the present application; Figure 5 The positioning mechanism structure schematic diagram of the vacuum contactor with the circulating water cooling equipment of the present application; Figure 6 The arc-shaped cooling pipeline cross-section structure schematic diagram of the vacuum contactor with the circulating water cooling equipment of the present application. ACCOMPANYING DRAWINGS

[0019] 100-vacuum contactor body; 101-bearing base; 102-connection valve; 103-first cooling hole; 104-second cooling hole; 200-arc-shaped cooling pipeline; 201-arch-shaped pipeline; 202-connection pipeline; 203-limiting hole; 300-straight-line cooling pipeline; 400-positioning mechanism; 401-positioning base; 402-penetration connecting rod; 403-basic connecting rod; 404-winding connecting rod; 405-against connecting rod; 406-against block. DETAILED DESCRIPTION

[0020] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the scope of protection of the present disclosure.

[0021] In addition, it needs to be noted that only parts related to the present application are shown in the drawings for the convenience of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that the concepts of "first", "second" and the like mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0023] It should be noted that the modification of "one", "multiple" mentioned in the present disclosure is illustrative but not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0024] The present disclosure will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0025] The present application will be further described below in conjunction with embodiments. Embodiments

[0026] A vacuum contactor with a circulating water cooling device, as shown in Figures 1-6 ; The shape of the vacuum contactor body 100 is cylindrical, so when cooling the installation environment, in order to better achieve the cooling effect, it is circumferentially cooled, specifically as follows, including a plurality of vacuum contactor bodies 100 and an arc-shaped cooling pipe 200 arranged above the vacuum contactor body 100, for cooling the top of the vacuum contactor body 100, the vacuum contactor body 100 is installed on the bearing base 101 by bolts, the arc-shaped cooling pipe 200 is installed on the bearing base 101 by the positioning mechanism 400, two second cooling holes 104 are processed at the bottom of the bearing base 101, the linear cooling pipe 300 is fixedly connected inside the second cooling hole 104, for cooling the bottom of the vacuum contactor body 100, the arc-shaped cooling pipe 200 and the linear cooling pipe 300 are in communication with the external water source, it is worth noting that the vacuum contactor is generally composed of three vacuum contactor bodies 100, each vacuum contactor body 100 needs to be cooled separately, the linear cooling pipe 300 penetrates through the three bearing bases 101, and then the installation environment is cooled from the bottom of the vacuum contactor body 100, and the arc-shaped cooling pipe 200 uniformly cools the upper part of the vacuum contactor body 100 through the arc-shaped shape. In actual use, since the bottom of the vacuum contactor body 100 is basically in a sealed state inside the bearing base 101, the linear linear cooling pipe 300 is used to cool it, because the bottom of the vacuum contactor body 100 has nothing to do with the straight line and the curve of the pipe, and the space of the top of the vacuum contactor body 100 is generally open, so the arc-shaped arc-shaped cooling pipe 200 is used to cool the top of the vacuum contactor body 100, so that the cooling effect is more uniform.

[0027] Furthermore, to ensure the arc shape of the arc-shaped cooling pipe 200 and to facilitate subsequent maintenance of the vacuum contactor body 100, the arc-shaped cooling pipe 200 includes an arched pipe 201 in the middle section and connecting pipes 202 at the edges. It is worth noting that the arched pipe 201 in the middle section uses a flexible hose, while the connecting pipes 202 at the two edges use rigid pipes. The top of the bearing base 101 is machined with two first cooling holes 103, and the top of the connecting pipes 202 is machined with limiting holes 203. The positioning mechanism 400 includes a positioning base 401 fixed inside the first cooling holes 103. A through-link 402 is fixedly connected to one end of the curved cooling pipe 200. The through-link 402 is fixed inside the limiting hole 203. A base link 403 is fixedly connected to the bottom of the through-link 402. A bend link 404 is hinged to one end of the base link 403. A stop link 405 is hinged to one end of the bend link 404. The base link 403, bend link 404, and stop link 405 are all located inside the curved cooling pipe 200. A stop block 406 is fixedly connected between two stop links 405 located inside the same curved cooling pipe 200. The top of the stop block 406 is fixedly connected to the inside of the arched pipe 201. Figure 6 As shown, it should be noted that the tortuous connecting rod 404 consists of multiple connecting rods connected to each other by hinges, used to maintain the curvature of the arched pipe 201. In this invention, the preferred number of connecting rods in the tortuous connecting rod 404 is two. The number of connecting rods can be determined according to the bending angle of the arched pipe 201. A connecting valve 102 is fixedly connected between adjacent arc-shaped cooling pipes 200. Specifically, the connecting valve 102 can be fixed on the bearing base 101 or on the wall in the vacuum contactor installation environment to ensure that the connecting valve 102 is fixed, thereby facilitating the rotation of the positioning mechanism 400 to adjust the position of the arc-shaped cooling pipe 200. The positioning mechanism 400 and the arc-shaped cooling pipeline 200 are matched in the application as follows. Generally, the two arc-shaped cooling pipelines 200 are respectively located at the head and tail of the vacuum contactor body 100. The curvature of the arched pipeline 201 is determined by the zigzag connecting rod 404 and the abutting connecting rod 405 and is kept unchanged. However, in actual use, the arc-shaped cooling pipeline 200 above the vacuum contactor body 100 needs to be removed to expose the vacuum contactor body 100 for maintenance, which is troublesome and time-consuming. Therefore, the positioning mechanism 400 is adopted to position the arc-shaped cooling pipeline 200. Meanwhile, the arc-shaped cooling pipeline 200 can be rotated by rotating the positioning base 401, so that the arc-shaped cooling pipeline 200 and the positioning mechanism 400 as a whole rotate along the central axis of the first cooling hole 103, and the vacuum contactor body 100 is exposed, which is convenient for maintenance. In order to ensure that the arc-shaped cooling pipeline 200 can cool the vacuum contactor body 100 near the middle position, the staff only needs to install a connecting rod on one side of the mounting seat of the vacuum contactor body 100, so that the connecting rod abuts against the lower middle of the arched pipeline 201, ensuring that the height of the arched pipeline 201 remains unchanged. Then, the positioning base 401 is reversely rotated, so that the arc-shaped cooling pipeline 200 moves towards the middle position of the vacuum contactor body 100. At this time, since the height of the arched pipeline 201 remains unchanged, and since the arched pipeline 201 is a flexible pipe, the zigzag connecting rod 404 and the abutting connecting rod 405 inside the arched pipeline 201 rotate, so that the arc-shaped cooling pipeline 200 has a substantially unchanged height when it is near the middle position of the vacuum contactor body 100, and does not contact the vacuum contactor body 100, and ensures uniform cooling effect, improving the practicability of the device.

[0028] In use, the preferred connection valve 102 of the present application is installed on the bearing base 101 through the H-shaped frame, so as to form an integral body in production, that is, three vacuum contactor bodies 100 with three bearing bases 101, and two straight cooling pipes 300 penetrating through the bottom of the integral body, and two arc-shaped cooling pipes 200 arranged at the top of each vacuum contactor body 100, and the two arc-shaped cooling pipes 200 located on the same side and adjacent to each other are fixed through the connection valve 102. When installing, the worker installs the bearing base 101 at the designated position, and then connects the straight cooling pipes 300 and the arc-shaped cooling pipes 200 with the external circulating water source. In general, the two arc-shaped cooling pipes 200 are respectively located at the head and tail of the vacuum contactor body 100. The curvature of the arc-shaped pipe 201 is determined by the zigzag connecting rod 404 and the abutting connecting rod 405, and is kept unchanged. However, in actual use, since the vacuum contactor body 100 needs to be maintained and repaired, the arc-shaped cooling pipe 200 above the vacuum contactor body 100 needs to be removed to expose the vacuum contactor body 100, which is troublesome and time-consuming. Therefore, the positioning mechanism 400 is adopted to position the arc-shaped cooling pipe 200, and the arc-shaped cooling pipe 200 can be rotated by rotating the positioning base 401, so that the arc-shaped cooling pipe 200 and the positioning mechanism 400 as a whole rotate along the central axis of the first cooling hole 103, and the vacuum contactor body 100 is exposed, which is convenient for maintenance and repair. In order to ensure that the arc-shaped cooling pipe 200 can cool the vacuum contactor body 100 close to the middle position, the worker only needs to install a connecting rod on one side of the mounting seat of the vacuum contactor body 100, so that the connecting rod abuts against the lower middle of the arc-shaped pipe 201, ensuring that the height of the arc-shaped pipe 201 remains unchanged, and then reversely rotating the positioning base 401 to move the arc-shaped cooling pipe 200 towards the middle position of the vacuum contactor body 100. At this time, since the height of the arc-shaped pipe 201 remains unchanged, and since the arc-shaped pipe 201 is a flexible pipe, the zigzag connecting rod 404 and the abutting connecting rod 405 inside the arc-shaped pipe 201 rotate, so that the arc-shaped cooling pipe 200 has a substantially unchanged height when close to the middle position of the vacuum contactor body 100, and does not contact the vacuum contactor body 100, and ensures uniform cooling effect, improving the practicability of the device.

[0029] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not change the essence of the corresponding technical solutions out of the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A vacuum contactor with a circulating water cooling device, characterized in that, a plurality of vacuum contactor bodies (100) and arc-shaped cooling pipes (200) arranged above the vacuum contactor bodies (100) are included; the vacuum contactor body (100) is bolted on a bearing base (101), the arc-shaped cooling pipe (200) is installed on the bearing base (101) by a positioning mechanism (400) for heat dissipation cooling of the top of the vacuum contactor body (100), and two second cooling holes (104) are processed at the bottom of the bearing base (101), and a straight cooling pipe (300) is fixedly connected inside the second cooling hole (104) for heat dissipation cooling of the bottom of the vacuum contactor body (100).

2. The vacuum contactor with a circulating water cooling device according to claim 1, characterized in that, The arc-shaped cooling pipe (200) includes an arched pipe (201) in the middle section and two connecting pipes (202) in the edge sections.

3. A vacuum contactor having a water cooling device according to claim 2, wherein The arched pipe (201) in the middle section is a hose, and the connecting pipes (202) in the edge sections are hard pipes.

4. A vacuum contactor having a water cooling device according to claim 3, wherein Two first cooling holes (103) are processed at the top of the bearing base (101), and a limiting hole (203) is processed at the top of the connecting pipe (202).

5. A vacuum contactor having a water cooling device according to claim 4, wherein The positioning mechanism (400) includes a positioning base (401) fixed inside the first cooling hole (103), one end of the positioning base (401) is fixedly connected with a through connecting rod (402), the through connecting rod (402) is fixed inside the limiting hole (203), the bottom of the through connecting rod (402) is fixedly connected with a base connecting rod (403), one end of the base connecting rod (403) is connected with a zigzag connecting rod (404) through a hinge, and one end of the zigzag connecting rod (404) is connected with a resisting connecting rod (405) through a hinge.

6. A vacuum contactor having a water cooling device according to claim 5, wherein The base connecting rod (403), the zigzag connecting rod (404), and the resisting connecting rod (405) are located inside the arc-shaped cooling pipe (200), two resisting connecting rods (405) located inside the same arc-shaped cooling pipe (200) are fixedly connected with a resisting block (406) between them, and the top of the resisting block (406) is fixedly connected inside the arched pipe (201).

7. A vacuum contactor having a water cooling device according to claim 6, wherein The zigzag connecting rod (404) is connected with two connecting rods through hinges to maintain the curvature of the arched pipe (201).

8. A vacuum contactor having a water cooling device according to claim 7, wherein Adjacent arc-shaped cooling pipes (200) are fixedly connected with a connecting valve (102), and the connecting valve (102) is fixed on the bearing base (101) by an H-shaped frame.

9. A vacuum contactor having a water cooling device according to claim 8, wherein Two arc-shaped cooling pipes (200) are respectively located at the head and tail of the vacuum contactor body (100). The zigzag connecting rod (404) and the resisting connecting rod (405) support the curvature of the arched pipe (201).

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