High-voltage wiring sealing structure

Abstract

The utility model discloses a high-voltage wiring sealing structure, and the structure comprises a supporting module which is fixed on the outer wall of a liquid container, covers an installation through groove, and comprises a supporting plate fixed on the outer wall of the liquid container, and an insulating supporting seat fixed on the supporting plate; the conductive module is installed on the supporting module and comprises three conductive mechanisms, each conductive mechanism comprises a conductive rod extending from the interior of the liquid container to the exterior, a locking assembly used for locking the conductive rod on the insulating supporting base and a sealing sleeve arranged on the periphery of the conductive rod, and the conductive rod is arranged on the supporting module in a penetrating mode; the inner wall of the sealing sleeve and the conducting rod as well as the outer wall of the sealing sleeve and the supporting module are in conical surface sealing fit; and conical surfaces are gradually shrunk from the inside of the liquid container to the outside. The high-voltage wiring sealing structure provided by the utility model can improve the sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and specifically relates to a motor for a reciprocating compressor. Background Technology

[0002] Submersible high-pressure motors are mainly used to drive underwater equipment such as submersible pumps. They are typically installed inside a liquid container and are connected to a power source via a wiring structure mounted on the outer wall of the container.

[0003] In existing technology, an insulating plate is typically installed on the outer wall of the liquid container, and a conductive rod is inserted through the insulating plate to connect the motor and the power supply. A sealing sleeve is installed between the conductive rod and the insulating plate for sealing. The above mechanism has the following drawbacks:

[0004] (1) As the working environment pressure increases, the insulation board becomes weak and liquid leaks out from the junction box.

[0005] (2) The sealing between the sealing sleeve and the insulating plate is not tight enough. As the entire device is repeatedly started and stopped, and subjected to repeated high-pressure impacts, the sealing sleeve may loosen, posing a safety hazard. Utility Model Content

[0006] The purpose of this invention is to provide a high-voltage wiring sealing structure that improves the sealing performance of the wiring structure and enhances its safety performance.

[0007] Based on the above problems, the technical solution provided by this utility model is as follows:

[0008] A high-pressure wiring sealing structure, installed on the outer wall of a liquid container, is used to connect a motor inside the liquid container to a power source. The outer wall of the liquid container has a mounting groove. The high-pressure wiring sealing structure includes:

[0009] A support module, which is fixed to the outer wall of the liquid container and covers the mounting groove, includes a support plate fixed to the outer wall of the liquid container and an insulating support base fixed to the support plate;

[0010] A conductive module, mounted on the support module, includes three conductive mechanisms. Each conductive mechanism includes a conductive rod extending from the inside of the liquid container to the outside, a locking assembly for locking the conductive rod onto the insulating support base, and a sealing sleeve disposed on the outer periphery of the conductive rod. The conductive rod passes through the support module. The inner wall of the sealing sleeve and the conductive rod, as well as the outer wall of the sealing sleeve and the support module, are in a conical sealing fit. The conical surface gradually narrows from the inside of the liquid container to the outside.

[0011] In some embodiments, the conductive rod includes a screw section, a tapered section, and a round section arranged sequentially from the outside to the inside of the liquid container. The tapered section tapers from the inside to the outside of the liquid container and passes through the support plate and the insulating support base.

[0012] In some embodiments, the sealing sleeve tapers from the inside of the liquid container to the outside and has conical inner and outer walls.

[0013] In some of these embodiments, the sealing sleeve is a polytetrafluoroethylene (PTFE) component.

[0014] In some embodiments, the locking assembly includes a pressure plate sleeved on the screw portion and abutting against the insulating support base, and a plurality of nuts locking the screw portion to the pressure plate.

[0015] In some embodiments, the round rod portion is connected to a conductive tube for connection to the motor.

[0016] In some embodiments, the outer wall of the conductive tube is provided with perforations.

[0017] In some of these embodiments, the support plate is a circular steel plate.

[0018] In some of these embodiments, the support plate is secured to the outer wall of the liquid container by a plurality of first fasteners.

[0019] In some embodiments, the insulating support includes a base and a Y-shaped separator disposed on the base, the three conductive mechanisms being separated by the Y-shaped separator.

[0020] Compared with the prior art, the advantages of this utility model are:

[0021] 1. The support module adopts a structure combining a support plate and an insulating support base, which can improve the strength of the structure, avoid leakage caused by the impact of high-pressure liquid in the liquid container on the wiring structure, and improve the reliability of the wiring structure.

[0022] 2. The sealing sleeve and the conductive rod, as well as the sealing sleeve and the support module, are all fitted with a conical surface. This conical surface gradually narrows from the inside of the liquid container to the outside. When the liquid pressure inside the liquid container increases, the combination structure of the sealing sleeve and the conductive rod can be pushed outward to further improve the sealing performance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is one of the structural schematic diagrams of an embodiment of the high-voltage wiring sealing structure of this utility model;

[0025] Figure 2 This is a second structural schematic diagram of an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the conductive rod in an embodiment of the present invention;

[0027] in:

[0028] 1. Support plate; 1-1. First positioning hole;

[0029] 2. Insulating support base; 2-1. Base; 2-2. Y-shaped separator;

[0030] 3. Conductive rod; 3-1. Screw section; 3-2. Tapered section; 3-3. Round rod section;

[0031] 4. Sealing sleeve;

[0032] 5. Pressure plate;

[0033] 6. Nuts;

[0034] 7. Liquid containers; 7-1. Installation through grooves;

[0035] 8. Second fastener;

[0036] 9. Conductive tube; 9-1. Perforation. Detailed Implementation

[0037] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0038] See Figure 1 and Figure 2The diagram below is a structural schematic of an embodiment of the present utility model. A high-pressure wiring sealing structure is provided, which is installed on the outer wall of a liquid container 7 (e.g., an oil storage tank) to connect a motor inside the liquid container 7 to a power source. The motor is used to drive equipment such as a submersible pump to discharge the liquid inside the liquid container 7. A mounting groove 7-1 is provided on the outer wall of the liquid container 7 to facilitate the wiring of the motor.

[0039] The high-voltage wiring sealing structure includes a support module fixed on the liquid container 7 and a conductive module installed on the support module.

[0040] The support module is fixed to the outer wall of the liquid container 7 and covers the mounting groove 7-1. It includes a support plate 1 fixed to the outer wall of the liquid container 7 and an insulating support base 2 fixed to the support plate 1. The support plate 1 is a circular steel plate, and the insulating support base 2 is made of plastic. The support plate 1 is fixed to the outer wall of the liquid container 7 by a plurality of first fasteners. The support plate 1 is provided with a plurality of first positioning holes 1-1 arranged circumferentially for the first fasteners to pass through. The first fasteners can be bolts.

[0041] The conductive module includes three conductive mechanisms to adapt to three-phase electricity. Each conductive mechanism includes a conductive rod 3 extending from the inside of the liquid container 7 to the outside, a locking assembly for locking the conductive rod 3 to the insulating support 2, and a sealing sleeve 4 disposed on the outer periphery of the conductive rod 3. The conductive rod 3 passes through the support module. The inner wall of the sealing sleeve 4 and the conductive rod 3, as well as the outer wall of the sealing sleeve 4 and the support module, are all in conical sealing fit, and the conical surface gradually narrows from the inside of the liquid container 7 to the outside.

[0042] like Figure 3 As shown, the conductive rod 3 includes a screw part 3-1, a tapered rod part 3-2 and a round rod part 3-3 arranged sequentially from the outside to the inside of the liquid container 7. The tapered rod part 3-2 is tapered from the inside to the outside of the liquid container 7 and passes through the support plate 1 and the insulating support base 2.

[0043] Correspondingly, the sealing sleeve 4 tapers from the inside of the liquid container 7 to the outside, and both its inner and outer walls are conical. In this example, the sealing sleeve 4 is made of polytetrafluoroethylene (PTFE), which has good stability and meets the insulation requirements. To facilitate the installation of the sealing sleeve 4, the support plate 1 and the insulating support 2 are provided with inner conical holes that match the sealing sleeve 4.

[0044] The insulating support 2 includes a base 2-1 and a Y-shaped separator 2-2 disposed on the base 2-1. The three conductive mechanisms are separated from each other by the Y-shaped separator 2-2. The base 2-1 and the Y-shaped separator 2-2 are integrally formed. The base 2-1 is fixed to the support plate 1, and the Y-shaped separator 2-2 extends upward from the base 2-1. The base 2-1 is disc-shaped and fixed to the support plate 1 by a plurality of second fasteners 8. The base 2-1 is provided with a plurality of second positioning holes arranged circumferentially for the second fasteners 8 to pass through. The second fasteners 8 can be bolts.

[0045] The locking assembly includes a pressure plate 5 sleeved on the screw part 3-1 and abutting against the insulating support 2, and a plurality of nuts 6 that lock the screw part 3-1 onto the pressure plate 5.

[0046] To facilitate connection with the motor, a conductive tube 9 is connected to the round rod part 3-3. A perforation 9-1 is provided on the outer wall of the conductive tube 9 so that the liquid in the liquid container 7 can enter the interior of the conductive tube 9, making the working environment inside and outside the conductive tube 9 the same.

[0047] The installation method of the above-mentioned high-voltage wiring sealing structure includes the following steps:

[0048] (1) Fix the insulating support base to the support plate to form a support module;

[0049] (2) Machining inner tapered holes at corresponding positions on the insulating support base and the support plate;

[0050] (3) Install the conical sealing sleeve on the conical part of the conductive rod;

[0051] (4) Pass the conical sealing sleeve and conductive rod assembly out of the support module and seal the conical sealing sleeve with the support plate and the conical surface of the insulating support seat. Then lock the conductive rod on the insulating support seat with multiple nuts and pressure plates.

[0052] (5) Fix the assembly obtained in step (4) onto the outer wall of the liquid container, then adjust the liquid pressure inside the liquid container to the working value. The pressure of the internal liquid pushes the conductive rod and the conical sealing sleeve to move from the inside to the outside. Finally, the conductive rod is locked again by multiple nuts.

[0053] In step (1), the base of the insulating support is fixed to the support plate by multiple bolts.

[0054] In step (2), the assembly consisting of the insulating support base and the support plate is placed in a CNC machining center. First, a through hole is drilled, and then the inner tapered hole is obtained by boring.

[0055] In step (4), the support plate is fixed to the outer wall of the liquid container by multiple bolts.

[0056] In summary, this high-pressure wiring sealing structure is simple in structure, easy to install, and can avoid loosening problems caused by changes in liquid pressure, thus ensuring sealing performance.

[0057] The above examples are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-voltage wiring sealing structure, installed on the outer wall of a liquid container, for connecting a motor inside the liquid container to a power source, wherein the outer wall of the liquid container is provided with a mounting groove, characterized in that... The high-voltage wiring sealing structure includes: A support module, which is fixed to the outer wall of the liquid container and covers the mounting groove, includes a support plate fixed to the outer wall of the liquid container and an insulating support base fixed to the support plate; A conductive module, mounted on the support module, includes three conductive mechanisms. Each conductive mechanism includes a conductive rod extending from the inside of the liquid container to the outside, a locking assembly for locking the conductive rod onto the insulating support base, and a sealing sleeve disposed on the outer periphery of the conductive rod. The conductive rod passes through the support module. The inner wall of the sealing sleeve and the conductive rod, as well as the outer wall of the sealing sleeve and the support module, are in a conical sealing fit. The conical surface gradually narrows from the inside of the liquid container to the outside.

2. The high-voltage wiring sealing structure according to claim 1, characterized in that: The conductive rod includes a screw section, a tapered section, and a round section arranged sequentially from the outside to the inside of the liquid container. The tapered section tapers from the inside to the outside of the liquid container and passes through the support plate and the insulating support base.

3. The high-voltage wiring sealing structure according to claim 2, characterized in that: The sealing sleeve tapers from the inside of the liquid container to the outside, and both its inner and outer walls are conical.

4. The high-voltage wiring sealing structure according to claim 3, characterized in that: The sealing sleeve is made of polytetrafluoroethylene.

5. The high-voltage wiring sealing structure according to claim 2, characterized in that: The locking assembly includes a pressure plate sleeved on the screw portion and abutting against the insulating support base, and a plurality of nuts that lock the screw portion onto the pressure plate.

6. The high-voltage wiring sealing structure according to claim 2, characterized in that: The round rod portion is connected to a conductive tube for connection to the motor.

7. The high-voltage wiring sealing structure according to claim 6, characterized in that: The outer wall of the conductive tube is provided with a perforation.

8. The high-voltage wiring sealing structure according to claim 1, characterized in that: The support plate is a circular steel plate.

9. The high-voltage wiring sealing structure according to claim 8, characterized in that: The support plate is fixed to the outer wall of the liquid container by a plurality of first fasteners.

10. The high-voltage wiring sealing structure according to claim 1, characterized in that: The insulating support includes a base and a Y-shaped separator disposed on the base, and the three conductive mechanisms are separated by the Y-shaped separator.

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