CN103456552B - A kind of easy survey formula high-voltage switch gear cylinder and use the high-voltage switch gear of this cylinder - Google Patents

Abstract

The invention relates to the field of high-voltage electrical equipment, in particular to an easy-to-test high-voltage switch cylinder and a high-voltage switch using the cylinder. At least one end of the cylinder body of the high-voltage switch is provided with a sealing structure for sealingly cooperating with the adapter. The outer edge of the connection side of the flange has a sealing part for sealing with the adapter, and a detection channel is provided in the flange, and the detection channel has a communication port on the connection side of the flange and is connected to the The detection port connected to the communication port, the communication port is located between the sealing part and the sealing ring groove on the connection side of the flange, and the detection port is used to cooperate with the corresponding leak detection equipment and be sealed; the present invention solves the current problem The leak detection of the high-voltage switch cylinder in use is time-consuming and laborious, and the sealing performance cannot be guaranteed.

Description

An easy-to-test high-voltage switch cylinder and a high-voltage switch using the cylinder

technical field

The invention relates to the field of high-voltage electrical equipment, in particular to an easy-to-test high-voltage switch cylinder and a high-voltage switch using the cylinder.

Background technique

The high-voltage switch cylinder is one of the most common parts in high-voltage switchgear. When it is used, it often needs to be connected to the corresponding terminal (another high-voltage switch cylinder or cover plate) through both ends, such as through two The two high-voltage switch cylinders are docked or one end is docked with another high-voltage switch cylinder, and the other end is sealed by the corresponding cover plate. However, no matter how it is connected to any part, it is necessary to strictly ensure that the high-voltage switch cylinder The sealing performance of the joint with the terminal fittings. At present, the sealing fit between the high-voltage switch cylinder and the terminal fittings is realized by the sealing ring. Specifically, the high-voltage switch cylinder includes a cylinder, and the cylinder body At least one end is provided with a sealing structure for sealingly fitting with the corresponding terminal fitting, and the sealing structure includes a flange disposed at the corresponding end of the cylinder, and one side of the flange is the connection side (for matching with the terminal fitting) One side), the other side is the back side, and a sealing ring groove is provided on the connecting side, and the sealing ring is assembled in the sealing ring groove. When the high-voltage switch cylinder is connected with the corresponding terminal piece, the sealing ring is It is press-fitted between the two and realizes the seal between the two. Therefore, if the seal ring is improperly designed and used, it will directly lead to the failure of the seal at the joint between the high-voltage switch cylinder and the terminal fitting. In the initial stage of use, if Properly designed and used, the sealing ring can well ensure the sealing performance of the joint between the high-voltage switch barrel and the terminal fitting, but after a period of use, the aging of the sealing ring will also make the high-voltage switch barrel The seal between the body and the terminal fitting fails, and once the seal between the high-voltage switch cylinder and the terminal fitting fails, it will most likely lead to accidents. Therefore, detecting whether the sealing ring is effective is a necessary means to avoid accidents.

In the prior art, the detection of the sealing ring between the high-voltage switch cylinder and the terminal fitting is carried out through corresponding leak detection equipment. , so as to ensure the sealing performance at each position of the sealing ring. However, this leak detection method is not only time-consuming and laborious, but also leads to unreliable detection results due to the influence of the detection environment. When testing work, the test results are naturally inaccurate.

To sum up, the current high-voltage switch cylinder has the problems of time-consuming and labor-intensive leak detection and unguaranteed sealing performance during use.

Contents of the invention

The purpose of the present invention is to provide an easy-to-test high-voltage switch cylinder to solve the problems of time-consuming and laborious leak detection and unguaranteed sealing performance of the current high-voltage switch cylinder during use.

At the same time, the object of the present invention is to provide a high-voltage switch using the above-mentioned high-voltage switch cylinder.

In order to solve the above problems, the easy-to-test high-voltage switch cylinder of the present invention adopts the following technical solutions: the easy-to-test high-voltage switch cylinder, at least one end of the high-voltage switch cylinder is provided with a sealing structure for sealing with the adapter terminal , the sealing structure includes a flange arranged at the corresponding end of the cylinder and a sealing ring arranged on the connecting side of the flange, and the outer edge of the connecting side of the flange has a seal for sealingly mating with the adapter part, and a detection channel is provided in the flange, and the detection channel has a communication port located on the connection side of the flange and a detection port communicated with the communication port, and the communication port is located on the connection side of the flange between the sealing part and the detection port. At the position between the seal ring grooves, the detection port is used to cooperate with the corresponding leak detection equipment and is equipped with a plug. The outer end of the plug has a pressure cap, and the inner surface of the pressure cap is provided with an interface seal ring groove and The detection port is sealed by the interface sealing ring arranged in the groove of the interface sealing ring.

An air outlet groove is provided on the connecting side of the flange, and the air outlet groove surrounds the sealing ring and directly communicates with the communication port of the detection channel.

The section of the air-moving groove is V-shaped.

The detection channel is formed by a through hole passing through the back side and the connection side of the flange.

The high-voltage switch of the present invention adopts the following technical scheme: the high-voltage switch includes a cylinder body, at least one end of the cylinder body is connected to a terminal piece through a flange, and the cylinder body is arranged between the connecting side of the flange plate and the terminal piece The sealing ring of the cylinder body is in sealing fit with the terminal fittings, and the outer edge of the flange connection side of the cylinder body is in sealing fit with the corresponding terminal fittings, and a detection channel is provided in the flange plate of the cylinder body and/or the terminal fittings The detection channel has a communication port on the flange connection side of the cylinder and a detection port communicating with the communication port. The detection port is used to cooperate with the corresponding leak detection equipment and is equipped with a plug. The outer end of the plug has a The pressure cap is provided with an interface sealing ring groove on the inner surface of the pressure cap and seals the detection port through the interface sealing ring arranged in the interface sealing ring groove.

The detection channel is only provided in the flange of the cylinder, and the communication port of the detection channel is located on the connection side of the flange of the cylinder.

The detection channel is formed by a through hole passing through the back side and the connection side of the flange.

An air outlet groove is provided on the connecting side of the flange, and the air outlet groove surrounds the sealing ring and directly communicates with the communication port of the detection channel.

The section of the air-moving groove is V-shaped.

Since the outer edge of the connecting side of the flange of the easy-to-test high-voltage switch cylinder body of the present invention has a sealing part for sealing with the adapter terminal, and the flange is provided with a detection channel, the detection channel has a The communication port on the connection side of the flange and the detection port connected with the communication port, the communication port is located between the sealing part and the sealing ring groove on the connection side of the flange, and the detection port is used to communicate with the corresponding The leak detection equipment is matched and equipped with a plug, the outer end of the plug has a pressure cap, the inner surface of the pressure cap is provided with an interface seal ring groove and the detection port is sealed by the interface seal ring arranged in the interface seal ring groove, Therefore, when in use, the external environment can be isolated from the communication port of the detection channel through the cooperation of the sealing part of the flange and the terminal fitting. When leak detection is required, the corresponding leak detection equipment and the detection port of the detection channel can be used. With the detection, the damage of the sealing ring at any position can be detected from this position. In addition, because the leak detection equipment detects the detection port one by one, it also greatly reduces the influence of the surrounding environment on the detection results, ensuring The reliability of the detection results shows that the high-voltage switch cylinder of the present invention solves the problems of time-consuming and laborious leak detection and unguaranteed sealing performance of the current high-voltage switch cylinder during use.

Furthermore, the gas outlet groove is more conducive to the diffusion of gas, so that the damage and leakage of the sealing ring can be detected more easily; the cross section of the air outlet groove is V-shaped, which can minimize the strength of the high-voltage switch cylinder The impact of the detection channel can be reduced by setting a through hole on the flange to reduce the processing difficulty.

Description of drawings

Fig. 1 is a structural schematic view (partial) of an embodiment of the easy-to-test high-voltage switch cylinder of the present invention;

Fig. 2 is a structural schematic view (partial) of an embodiment of the high voltage switch of the present invention.

detailed description

An embodiment of the cylinder body of the easy-to-test high-voltage switch of the present invention, hereinafter referred to as the cylinder body, as shown in Figure 1, one end of the cylinder body 11 has a sealing structure for sealing and matching with the adapter terminal, and the sealing structure includes The flange 12 provided at the corresponding end of the cylinder 11, the side of the flange 12 used to connect with the terminal fitting (which can be another cylinder or a cover plate) is the connection side, and the other side is the back. On the connecting side, there is a sealing ring groove 101. When in use, a sealing ring can be assembled in the sealing ring groove 101 to ensure the sealing of the joint between the cylinder body and the corresponding terminal fitting, thereby preventing The gas in the cylinder leaks. In addition, there is a sealing part at the outer edge of the connecting side of the flange 12, and the sealing part is used for sealing and matching with the corresponding terminal fitting. In this embodiment, the sealing part of the flange 12 is provided with a There is a dust-proof sealing ring groove 102, and a dust-proof sealing ring can be set in the dust-proof sealing ring groove 102 to seal and cooperate with the corresponding terminal fitting during use. A detection channel 103 is also provided in the flange 12, and the detection channel 103 has The communication port and the detection port that communicate with each other. In this embodiment, the detection channel 103 is formed by a through hole that runs through the two sides of the flange. The communication port of the detection channel 103 is formed between them, and the other end forms the detection port of the detection channel 103. The detection port is used to cooperate with the corresponding leak detection equipment to perform leak detection work. It should be pointed out here that the method of the cylinder When the blue plate 12 is matched with the adapter terminal piece, there is an air-permeable gap between the sealing ring groove and the sealing part and the corresponding terminal piece during use, so the communication port of the detection channel 103 is set as At the position between the sealing ring groove 101 and the sealing part of the flange, if the sealing ring in the sealing ring groove 101 is damaged at any position, it can be detected through the detection port. In order to facilitate the diffusion of gas, The connecting side of the flange 12 is also provided with an air outlet groove 104, and the air outlet groove 104 is arranged around the sealing ring groove. In the air outlet groove 104, when the leak detection work is not performed, the detection port of the detection channel 103 is sealed by the plug 13. In this implementation, the plug 13 adopts a wire plug, and the outer end of the plug has a pressure cap. An interface sealing ring groove is provided on the inner surface, and the detection port is sealed by an interface sealing ring 14 arranged in the interface sealing ring groove.

In other embodiments of the high-voltage switch cylinder of the present invention, the detection port of the detection channel described in the above-mentioned embodiment of the high-voltage switch cylinder can also be located on the outer peripheral surface of the flange; the air outlet groove can also be omitted ; The sealing structure can also be provided at both ends of the cylinder of the high-voltage switch cylinder.

An embodiment of the high-voltage switch of the present invention, as shown in Figure 2, includes a cylinder 201 and a terminal 202 connected to one end of the cylinder. In this embodiment, the terminal 202 is another cylinder (other In the embodiment, the terminal fitting can also be a cover plate), the structure of the cylinder 201 is the same as that of the embodiment of the above-mentioned high-voltage switch cylinder, and the cylinder 201 passes through the seal provided in the sealing ring groove on the flange. Ring 203 is in sealing fit with the terminal fitting, and at the same time, the sealing portion of the flange is in sealing fit with the end fitting through the dustproof sealing ring 204 provided in the dustproof sealing ring groove.

In other embodiments of the high voltage switch of the present invention, both the sealing structure and the detection channel in the barrel 201 can also be provided on the terminal fitting.

Claims (9)

1. Easy-to-test high-voltage switch cylinder, at least one end of the high-voltage switch cylinder is provided with a sealing structure for sealing and matching with the adapter terminal, the sealing structure includes a flange at the corresponding end of the cylinder and a The first sealing ring on the connecting side of the flange, the connecting side of the flange is provided with a sealing ring groove, and the first sealing ring is assembled in the sealing ring groove, and it is characterized in that the connecting side of the flange There is a sealing part at the edge for sealing and matching with the adapter terminal, and a dust-proof sealing ring groove is opened on the sealing part, a dust-proof sealing ring is arranged in the dust-proof sealing ring groove, and a detection channel is provided in the flange , the detection channel has a communication port located on the connection side of the flange and a detection port communicated with the communication port, the communication port is located at a position between the sealing part and the seal ring groove on the connection side of the flange, and the detection port It is used to cooperate with the corresponding leak detection equipment to detect the damage of the first sealing ring, and a plug is installed in it. The plug adopts a wire plug, and the outer end of the plug has a pressure cap. The interface sealing ring groove and the detection port is sealed by the interface sealing ring arranged in the interface sealing ring groove, and the sealing surface where the first sealing ring is located is higher than the dustproof seal in the direction toward the adapter terminal piece The sealing surface where the ring is located, the dustproof sealing ring is thinner than the first sealing ring. 2. The easy-to-test high-voltage switch cylinder according to claim 1, characterized in that an air outlet groove is provided on the connecting side of the flange, and the air outlet groove surrounds the first sealing ring and is directly connected to the communication port of the detection channel. connected. 3. The easy-to-test high-voltage switch cylinder according to claim 2, wherein the section of the gas outlet groove is V-shaped. 4. The easy-to-test high-voltage switch cylinder according to any one of claims 1-3, wherein the detection channel is formed by a through hole penetrating through the back side and the connection side of the flange. 5. A high-voltage switch, including a cylinder, at least one end of the cylinder is connected to a terminal piece through a flange, and the cylinder is connected to the terminal through the first sealing ring provided between the connection side of the flange and the terminal piece. It is characterized in that the sealing part at the outer edge of the flange connection side of the cylinder body is in a sealing fit with the corresponding end fitting, and a dust-proof sealing ring groove is opened on the sealing part, and the dust-proof sealing ring groove is in the A dust-proof sealing ring is provided, and a detection channel is provided in the flange plate of the cylinder body and/or the end fitting, and the detection channel has a communication port on the flange connection side of the cylinder body and a detection channel connected to the communication port. The detection port is used to cooperate with the corresponding leak detection equipment to detect the damage of the first sealing ring and a plug is installed in it. The outer end of the plug has a pressure cap, and the inner side of the pressure cap is provided with an interface seal. ring groove and seal the detection port through the interface sealing ring arranged in the interface sealing ring groove; the sealing surface where the first sealing ring is located is higher than that where the dustproof sealing ring is located in the direction toward the adapter On the sealing surface, the dustproof sealing ring is thinner than the first sealing ring. 6 . The high-voltage switch according to claim 5 , wherein the detection channel is provided only in the flange of the cylinder body, and the communication port of the detection channel is located on the connection side of the flange plate of the cylinder body. 7 . 7. The high-voltage switch according to claim 6, wherein the detection channel is formed by a through hole penetrating through the back side and the connection side of the flange. 8 . The high-voltage switch according to claim 5 , wherein an air outlet groove is provided on the connecting side of the flange, and the air outlet groove surrounds the first sealing ring and directly communicates with the communication port of the detection channel. 9. The high voltage switch according to claim 8, characterized in that, the cross-section of the gas outlet groove is V-shaped.