High DC voltage insulator charge simulation test device

Abstract

The utility model relates to the technical field of electrical test equipment, and especially relates to a high DC voltage insulator charge simulation test device. According to the technical scheme, the device comprises a device body, an insulating cover, a conductor, an insulator and a shielding cover, the conductor is arranged in the device body, the insulator is detachably connected to the end of the conductor through threads, the shielding cover is installed on the other side of the insulator through a fastener, and the shielding cover is arranged on the other side of the insulator. And the insulating cover is fixed at the end part of the device main body through a fastener and wraps the shielding cover. According to the utility model, the insulator is in threaded connection with the end part of the conductor, so that the insulator is convenient to disassemble, specifically, the conductor and the insulator can be in threaded connection through the cooperation of the external threaded connection section and the internal threaded connection section, and the conductor and the insulator can be conveniently and rapidly assembled and disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical test equipment technical field especially relates to a high direct current voltage insulator electric charge simulation test device. BACKGROUND

[0002] The high direct current voltage insulator electric charge simulation test device is an important device for evaluating and researching the performance of insulators used in high-voltage direct current transmission systems. The main purpose of this test device is to test the electrical performance of insulators and their stability and reliability under long-term high-voltage direct current electric field by simulating phenomena such as charge accumulation and electric field distribution under actual operating conditions.

[0003] Currently, during the insulator electric charge simulation process, it is necessary to repeatedly disassemble and assemble the insulator. In general, fasteners such as bolts are used to fix the insulator to the conductor. However, the process of disassembling and assembling the insulator through fastening requires a long time and is inconvenient to use. SUMMARY

[0004] In view of the problems in the background art, the utility model provides a high direct current voltage insulator electric charge simulation test device that can quickly disassemble and assemble the insulator.

[0005] The technical solution of the utility model is a high direct current voltage insulator electric charge simulation test device, which includes a charge detection device, a device main body, an insulating cover, a conductor, an insulator, and a shielding cover.

[0006] The conductor is arranged in the device main body, the insulator is detachably connected to the end of the conductor through threads, the shielding cover is installed on the other side of the insulator through fasteners, and the insulating cover is fixed to the end of the device main body through fasteners and covers the shielding cover.

[0007] The charge detection device is arranged on one side of the insulator.

[0008] Preferably, it further includes an electrical connection terminal fixed to the other end of the conductor for connecting to the external leakage current ground.

[0009] Preferably, it further includes an oil inlet pipe and an oil outlet pipe. The conductor, the insulator, and the mounting part of the shielding cover all have cavities that are interconnected to form a hot oil flow channel. One end of the oil inlet pipe extends to the cavity of the shielding cover through the hot oil flow channel, and one end of the oil outlet pipe is connected to the cavity of the conductor.

[0010] Preferably, the base part of the insulator is provided with a cavity for the oil inlet pipe to pass through, and there is a gap between the oil inlet pipe and the inner wall of the cavity.

[0011] Preferably, the oil inlet pipe is used to deliver hot oil, which is delivered into the cavity of the shielding cover through the oil inlet pipe and flows out along the hot oil flow channel and the oil outlet pipe.

[0012] Preferably, the connection part of the conductor and the insulator has an outer threaded connection section, the base part of the insulator has an inner threaded connection section threadedly matched with the outer threaded connection section, and the conductor and the insulator are detachably connected through the outer threaded connection section and the inner threaded connection section.

[0013] Preferably, the side surface of the device body and the shielding cover close to each other is provided with an inner recess, and when the device body and the shielding cover are connected through the fastener, the inner recess forms a receiving groove, and the edge part of the insulator extends into the receiving groove.

[0014] Preferably, the two sides of the insulator are provided with insulating rings, and the insulating rings are attached to the inner wall of the receiving groove.

[0015] Compared with the prior art, the utility model has the beneficial technical effects that:

[0016] The utility model discloses a threaded connection between the insulator and the conductor, which makes the insulator convenient to disassemble, and specifically, the connection part of the conductor and the insulator has an outer threaded connection section, the base part of the insulator has an inner threaded connection section threadedly matched with the outer threaded connection section, and the conductor and the insulator are detachably connected through the outer threaded connection section and the inner threaded connection section. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is Figure 1 It is a local enlarged view of A in the middle.

[0019] In the figure, 100 is a device body, 110 is an electricity connection terminal, 120 is an oil inlet pipe, 130 is an oil outlet pipe, 140 is a conductor, 141 is an outer threaded connection section, 150 is a shielding cover, 151 is a receiving groove, 160 is a shielding cover, 170 is an insulator, 171 is an inner threaded connection section, 172 is an insulating ring, 180 is a hot oil flow channel, and 190 is a charge detection device.

[0020] The arrow is the oil circulation direction. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0023] As shown in Figure 1 and Figure 2 The present application provides a high DC voltage insulator charge simulation test device, which comprises a charge detection device 190, and further comprises a device main body 100, an insulating cover 150, a conductor 140, an insulator 170 and a shielding cover 160. The conductor 140 is arranged in the device main body 100, the device main body 100 is made of insulating material, the insulator 170 is detachably connected to the end of the conductor 140 through threads, the shielding cover 160 is installed on the other side of the insulator 170 through fasteners, and the insulating cover 150 is fixed to the end of the device main body 100 through fasteners and covers the shielding cover 160. The charge detection device 190 is arranged on one side of the insulator 170 and is used for detecting the distribution of the charge on the surface of the insulator 170 under the condition of passing through high-voltage DC, so as to determine the quality of the insulator 170. For example, the charge detection device 190 is a charge detector, which is a conventional device, and the specific structure and use method will not be described here.

[0024] It should be noted that the insulator 170 is detachably connected to the end of the conductor 140 through threads, so that the insulator 170 is convenient to disassemble. Specifically, the connection between the conductor 140 and the insulator 170 has an outer thread connection section 141, the base part of the insulator 170 has an inner thread connection section 171 which is threadedly matched with the outer thread connection section 141, and the conductor 140 and the insulator 170 are detachably connected through the outer thread connection section 141 and the inner thread connection section 171.

[0025] The conductor 140 and the insulator 170 are threadedly connected through the cooperation of the outer thread connection section 141 and the inner thread connection section 171, which facilitates the quick installation and disassembly of the conductor 140 and the insulator 170.

[0026] Further, when the insulator 170 is installed, the installation of the insulator 170 is fixed by screwing the insulator 170 with the conductor 140, then the shielding cover 160 is fixed to the other side of the insulator 170 by the fastener, and finally the insulating cover 150 is connected with the end of the device body 100 to protect the shielding cover 160.

[0027] It needs to be further explained that the side surface of the device body 100 and the insulating cover 150 close to each other is provided with an inner recess, when the device body 100 and the insulating cover 150 are connected by the fastener, the inner recess forms a containing groove 151, and the edge part of the insulator 170 extends into the containing groove 151. When the installation of the insulator 170 is completed, the edge part thereof extends into the containing groove 151 formed by the inner recess, so as to realize the isolation of the shielding cover 160 from the conductor 140 and other components, and at the same time cooperate with the insulating cover 150 to make the shielding cover 160 be separately arranged, thereby ensuring the safety in the simulation test process.

[0028] Further, the two sides of the insulator 170 are provided with insulating rings 172, and the insulating rings 172 are attached to the inner wall of the containing groove 151. By arranging the insulating rings 172 on the insulator 170, the insulation effect is achieved, so as to better isolate the shielding cover 160 from the outside by the insulator 170, thereby ensuring the safety in the simulation test process.

[0029] In the embodiment, the high DC voltage insulator charge simulation test device further comprises an electrical connection terminal 110 fixed to the other end of the conductor 140, which is used to connect the high-voltage DC equipment to complete the test.

[0030] In the embodiment, the high DC voltage insulator charge simulation test device further comprises an oil inlet pipe 120 and an oil outlet pipe 130, and the installation positions of the conductor 140, the insulator 170 and the shielding cover 160 are provided with cavities, and the cavities are connected with each other to form a hot oil flow channel 180; one end of the oil inlet pipe 120 extends into the cavity of the shielding cover 160 through the hot oil flow channel 180, and one end of the oil outlet pipe 130 is connected with the cavity of the conductor 140.

[0031] The base part of the insulator 170 is provided with a cavity through which the oil inlet pipe 120 passes, and there is a gap between the oil inlet pipe 120 and the inner wall of the cavity. By arranging the gap, the hot oil can flow through the cavity of the shielding cover 160, then flow back to the hot oil flow channel 180 through the gap, and then be discharged through the oil outlet pipe 130.

[0032] The oil inlet pipe 120 is used to transport hot oil, and the hot oil is transported into the cavity of the shielding cover 160 through the oil inlet pipe 120, and then flows out along the hot oil flow channel 180 and the oil outlet pipe 130.

[0033] Specifically, the oil inlet pipe 120 and the oil outlet pipe 130 are respectively arranged on two sides of the device for injecting and discharging hot oil. The oil inlet pipe 120 is responsible for supplying hot oil to the inside of the device, and the oil outlet pipe 130 is used for discharging the used hot oil; specifically, the hot oil is transported to the cavity of the shield 160 along the hot oil flow channel 180 through the oil inlet pipe 120, then flows back to the hot oil flow channel 180 through the gap, and is discharged through the oil outlet pipe 130, so as to simulate high-pressure working conditions. It should be noted that the oil inlet pipe 120 and the oil outlet pipe 130 are connected with an external oil circuit system, for example, an oil heater is used to form an oil circuit circulation. At the same time, flat shields are arranged on the inner walls of the device main body 100 and the conductor 140 in contact with the oil inlet pipe 120 and the oil outlet pipe 130, so as to prevent the leakage of electric current.

[0034] Method for use: fill in the protective gas higher than the standard atmospheric pressure, connect the high-voltage equipment to the power terminal 110, after the surface of the insulator 170 accumulates a certain electric charge, heat the insulator 170 through the hot oil, and the working condition that the insulator 170 is applied with high voltage and large current direct current can be completely simulated. The charge distribution on the surface of the insulator 170 is detected by the charge detection device 190, and then the quality of the insulator 170 is detected.

[0035] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, according to the specific circumstances, the specific meaning of the above-mentioned terms in the utility model is understood.

[0036] The above specific embodiments are only one or several preferred embodiments of the utility model, and based on the technical scheme of the utility model and the related inspiration of the above-mentioned embodiments, the above-mentioned specific embodiments can be improved and combined in many ways by those skilled in the art.

Claims

1. A high DC voltage insulator charge simulation testing device, comprising a charge detection device, characterized in that, It also includes the main body of the device, the insulating cover, the conductor, the insulator, and the shielding cover; The conductor is disposed inside the main body of the device, the insulator is detachably connected to the end of the conductor by a thread, the shield is installed on the other side of the insulator by fasteners, and the shield is fixed to the end of the main body of the device by fasteners and covers the shield. The charge detection device is located on one side of the insulator.

2. The high DC voltage insulator charge simulation test device according to claim 1, characterized in that, It also includes a power connection terminal, which is fixed to the other end of the conductor for connection to external high-voltage DC equipment.

3. The high DC voltage insulator charge simulation test device according to claim 1, characterized in that, It also includes an oil inlet pipe and an oil outlet pipe. The mounting locations of the conductor, the insulator, and the shield all have cavities, and the cavities are interconnected to form a hot oil flow channel. One end of the oil inlet pipe extends through the hot oil flow channel into the cavity of the shield, and one end of the oil outlet pipe is connected to the cavity of the conductor.

4. The high DC voltage insulator charge simulation test device according to claim 3, characterized in that, The base portion of the insulator is provided with a cavity through which an oil inlet pipe passes, and there is a gap between the oil inlet pipe and the inner wall of the cavity.

5. The high DC voltage insulator charge simulation test device according to claim 3, characterized in that, The oil inlet pipe is used to transport hot oil, which is transported through the oil inlet pipe into the cavity of the shield and flows out along the hot oil flow channel and the oil outlet pipe.

6. The high DC voltage insulator charge simulation test device according to claim 1, characterized in that, The conductor and the insulator have an external threaded connection section at the connection point, and the base portion of the insulator has an internal threaded connection section that is threadedly engaged with the external threaded connection section. The conductor and the insulator are detachably connected through the external threaded connection section and the internal threaded connection section.

7. The high DC voltage insulator charge simulation test device according to claim 1, characterized in that, The device body and the insulating cover are both provided with recesses on their adjacent surfaces. When the device body and the insulating cover are connected by fasteners, the recesses form receiving grooves, and the edge portion of the insulator extends into the receiving grooves.

8. The high DC voltage insulator charge simulation test device according to claim 7, characterized in that, Insulating rings are provided on both sides of the insulator, and the insulating rings are fitted to the inner wall of the receiving groove.

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