Novel SF6 gas inflating and filtering device

Abstract

The utility model relates to the technical field of gas filling and filtering, and discloses a novel SF6 gas filling and filtering device which comprises a pressure reducing valve, a gas filling pipe connected to the side portion of the pressure reducing valve, a self-sealing connector installed on the side portion of the gas filling pipe, a pressure gauge connected to the side portion of the self-sealing connector, a device body connected to the side portion of the self-sealing connector, and a gas filling connector installed on the front side of the device body. A connecting joint is installed on the rear side of the device body, the device body is arranged between the inflating joint and the connecting joint, the device body, the inflating joint and the connecting joint are communicated, a connecting groove is formed in the front side in the device body, a filtering air chamber is formed in the device body, and a filtering element is placed in the filtering air chamber; according to the scheme, the structure is simple, operation is convenient and fast, the filter element is installed between the inflation connector and the device body so that gas can be filtered, and meanwhile the inflation connector is matched with the device body so that the filter element can be conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of inflation filtering, in particular to a novel SF6 gas inflation filtering device. Background Art

[0002] The SF6 gas charging device is a device that can realize the recovery, charging and vacuuming of SF6 gas in the gas chamber of the equipment body, and can ensure that the pressure of the gas chamber reaches the set requirements after the charging is completed, with high control accuracy, labor saving and high charging efficiency; at the same time, the gas path can be controlled to be open or closed, and the flow rate can be adjusted during the charging process to ensure smooth charging; the SF6 gas charging device includes an SF6 charging pressure reducing valve, an SF6 charging pipeline, a filter device, a self-sealing joint, a pressure gauge, etc. At the same time, a new type of SF6 gas charging filter device includes a charging pressure reducing valve connected to the SF6 gas cylinder and a special SF6 charging pipeline, which can be matched with various transition adapters of different specifications to realize the recovery, charging and vacuuming of SF6 gas in the gas chamber of the equipment body, and can ensure that the pressure of the gas chamber reaches the set requirements after the charging is completed, with high control accuracy, labor saving and high charging efficiency.

[0003] One of the new SF6 gas filling and filtering devices is mainly used in GIS, PCB, SF6 ring network cabinets, and SF6 gas-filled transformers in high-voltage equipment in the power industry that uses SF6 gas as the arc extinguishing medium. It can realize the recovery, filling, gas replenishment and gas filtration and purification of the equipment body to ensure the safety and reliability of the equipment operation.

[0004] At present, the gas charged into the power equipment is filtered, and the filtering device in the rapid charging of SF6 gas can filter out impurities in the gas to ensure the reliable operation of the power equipment. However, many gas filters currently have only one filter port, which is relatively simple when filtering the gas; therefore, it does not meet the existing needs. In this regard, we propose a new SF6 gas charging filter device. Utility Model Content

[0005] The utility model provides a novel SF6 gas filling filter device, which has the beneficial effect of facilitating the replacement of the filter element, and solves the problem mentioned in the above background technology that the gas filled into the power equipment is filtered to remove impurities in the gas and ensure the reliable operation of the power equipment. However, many gas filters currently have only one filter port, which is relatively single when filtering the gas.

[0006] The utility model provides the following technical solutions: a novel SF6 gas inflation filter device, comprising a pressure reducing valve, an inflation pipe connected to the side of the pressure reducing valve, a self-sealing joint installed on the side of the inflation pipe, a pressure gauge connected to the side of the self-sealing joint, a device body connected to the side of the self-sealing joint, an inflation joint installed on the front side of the device body, a connecting joint installed on the rear side of the device body, the device body is arranged between the inflation joint and the connecting joint, and the device body, the inflation joint and the connecting joint are communicated, a connecting groove is arranged on the front side of the device body, a filter air chamber is arranged in the device body, a filter core is placed in the filter air chamber, an air outlet is arranged on the bottom side of the inflation joint, and the air outlet is communicated with the filter air chamber.

[0007] As an optional solution of a new type of SF6 gas inflation filter device described in the utility model, wherein: the connecting joint is used to connect with the inflation equipment, a first channel for air circulation is arranged inside the connecting joint, and an annular block is integrated inside the first channel, an internal thread is opened inside the first channel, a second channel is arranged inside the device body, and the second channel is communicated with the filter air chamber and the first channel.

[0008] As an optional solution for a new type of SF6 gas inflation filter device described in the utility model, wherein: a connecting pipe is integrally provided on the side of the device body, and the connecting pipe is inserted into the first channel, an external thread is provided on the outer side of the connecting pipe, the external thread is threadedly connected to the internal thread, the end face of the connecting pipe is in contact with the annular block, a sealing groove is provided inside the connecting joint, a sealing ring is provided inside the sealing groove, and the upper end face of the sealing ring is in contact with the side of the device body.

[0009] As an optional scheme of a new type of SF6 gas inflation filter device described in the utility model, wherein: a nozzle for connecting to a gas pipeline is integrally installed on one side of the inflation joint, an air intake pipe is integrally installed on the other side of the inflation joint, the air intake pipe is inserted into the filter air chamber, the diameter of the nozzle is smaller than the diameter of the device body, a mounting thread is arranged on the outside of the inflation joint, a butt thread is arranged inside the connecting groove, and the butt thread is threadedly connected to the mounting thread, and a sealing ring is arranged on the contact surface between the connecting groove and the air intake pipe.

[0010] As an optional scheme of a new type of SF6 gas inflation filter device described in the utility model, wherein: the filter element is configured as a hollow filter element, and a sealing block is installed at one end of the filter element, and a rubber ring is installed at the other end of the filter element, a first card slot is opened inside the air inlet pipe, and a second card slot is arranged inside the device body, the second card slot is arranged with the same specification as the first card slot, the sealing block is engaged in the first card slot, and the rubber ring is engaged in the second card slot.

[0011] As an optional scheme of a new type of SF6 gas inflation filter device described in the utility model, wherein: the cross-sectional shape of the air outlet is set to be L-shaped, and a placement groove is provided at the air inlet of the air outlet, the placement groove is integrated with the air outlet, a filter net is placed inside the placement groove, and the filter net covers the air inlet of the air outlet, a third channel is provided inside the inflation joint, and the air outlet is respectively communicated with the filter air chamber and the third channel.

[0012] As an optional solution for a new type of SF6 gas inflation filter device described in the utility model, the placement groove is provided with a thread, and a circular block is provided inside the placement groove, a thread is provided on the outside of the circular block, the circular block is threadedly connected to the placement groove, and a circular hole is opened on the surface of the circular block, and the side of the circular block is in contact with the filter screen.

[0013] The utility model has the following beneficial effects:

[0014] 1. A novel SF6 gas inflation filter device, when in use, gas reaches the inside of the filter element through the first channel, and a sealing block and a rubber ring are respectively installed on both sides of the filter element, the sealing block is arranged on the surface of the first slot, and the rubber ring is clamped on the surface of the second slot. Since the rubber ring is annular, air reaches the inside of the filter element, and while the gas continuously enters the filter element, the gas is filtered from the inside of the filter element, and thus flows into the inside of the filter air chamber. By setting an air outlet, the filtered gas reaches the inside of the third channel through the air outlet, thereby inflating; by arranging the filter element between the second slot and the first slot, manually rotating the inflation joint and the device body, the installation thread and the docking thread are threadedly connected, and in the process of threading the inflation joint and the device body, the distance between the inflation joint and the device body is reduced, so that the filter element is clamped between the second slot and the first slot. The scheme has a simple structure and is easy to operate. By installing the filter element between the inflation joint and the device body, the gas is filtered, and by cooperating with the inflation joint and the device body, the filter element is conveniently replaced.

[0015] 2. This novel SF6 gas inflation filter device, when in use, has a placement groove at the air inlet of the air outlet, a filter screen is installed inside the placement groove, and threads are provided inside the placement groove, so that a circular block and the placement groove threads are connected. When the circular block is threadedly connected to the inside of the placement groove, the filter screen is prevented from falling off as much as possible through the circular block. At the same time, circular holes are provided on the surface of the circular block so that the gas flows into the air outlet through the circular holes. This solution has a simple structure and is easy to operate. Through the cooperation of the filter screen and the circular block, the gas is filtered twice to improve the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0019] Figure 4 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0020] Figure 5 It is a schematic diagram of the guiding structure of the existing inflation device of the utility model.

[0021] Figure 6 It is a schematic diagram of the structure of the existing inflation device of the utility model.

[0022] In the figure: 110, device body; 111, second channel; 112, connecting pipe; 113, external thread; 114, sealing groove; 115, sealing ring; 116, second clamping groove; 120, charging joint; 121, nozzle; 122, air inlet pipe; 123, first clamping groove; 126, mounting thread; 124, docking thread; 125, sealing ring; 130, connecting joint; 131, first channel; 132, annular block; 133, internal thread; 140, connecting groove; 150, filter air chamber; 160, filter element; 161, sealing block; 162, rubber ring; 170, air outlet; 180, placement groove; 181, filter screen; 182, third channel; 183, circular block; 184, circular hole; 190, pressure reducing valve; 191, charging pipe; 192, self-sealing joint; 193, pressure gauge. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1: This embodiment is intended to promote the solution of filtering the gas charged into the power equipment, filtering out impurities in the gas, and ensuring the reliable operation of the power equipment. However, many gas filters currently have only one filter port, which is a relatively simple problem when filtering the gas. Please refer to Figure 1 - Figure 6 A novel SF6 gas inflating and filtering device comprises a pressure reducing valve 190, a gas charging pipe 191 connected to the side of the pressure reducing valve 190, a self-sealing joint 192 installed on the side of the gas charging pipe 191, a pressure gauge 193 connected to the side of the self-sealing joint 192, a device body 110 connected to the side of the self-sealing joint 192, a gas charging joint 120 installed on the front side of the device body 110, a connecting joint 130 installed on the rear side of the device body 110, the device body 110 is arranged between the gas charging joint 120 and the connecting joint 130, and the device body 110, the gas charging joint 120 and the connecting joint 130 are connected to the side of the self-sealing joint 192. The joint 120 is communicated with the connecting joint 130, a connecting groove 140 is provided on the front side of the device body 110, a filter air chamber 150 is provided inside the device body 110, a filter element 160 is placed inside the filter air chamber 150, an air outlet 170 is provided on the bottom side of the inflation joint 120, and the air outlet 170 is communicated with the filter air chamber 150, the device body 110 is set to 304 steel, the pressure reducing valve 190, the inflation tube 191 and the self-sealing joint 192 are all common devices, which are well known in the art, and therefore are not explained in this embodiment.

[0025] The connecting joint 130 is used to connect to the inflation device. A first channel 131 for air circulation is arranged inside the connecting joint 130, and an annular block 132 is integrated inside the first channel 131. An internal thread 133 is opened inside the first channel 131. A second channel 111 is arranged inside the device body 110, and the second channel 111 is communicated with the filter air chamber 150 and the first channel 131.

[0026] A connecting pipe 112 is integrally provided on the side of the device body 110, and the connecting pipe 112 is inserted into the first channel 131. An external thread 113 is provided on the outside of the connecting pipe 112, and the external thread 113 is threadedly connected to the internal thread 133. The end face of the connecting pipe 112 contacts the annular block 132. A sealing groove 114 is provided inside the connecting joint 130, and a sealing ring 115 is provided inside the sealing groove 114. The upper end face of the sealing ring 115 contacts the side of the device body 110.

[0027] A nozzle 121 for connecting to the gas pipeline is integrally installed on one side of the inflation joint 120, and an air intake pipe 122 is integrally installed on the other side of the inflation joint 120. The air intake pipe 122 is inserted into the filter air chamber 150. The diameter of the nozzle 121 is smaller than the diameter of the device body 110. A mounting thread 126 is provided on the outer side of the inflation joint 120, and a docking thread 124 is provided inside the connecting groove 140. The docking thread 124 is threadedly connected to the mounting thread 126, and a sealing ring 125 is provided on the contact surface between the connecting groove 140 and the air intake pipe 122.

[0028] The filter element 160 is configured as a hollow filter element, and a sealing block 161 is installed at one end of the filter element 160, and a rubber ring 162 is installed at the other end of the filter element 160. A first card slot 123 is opened inside the air inlet pipe 122, and the first card slot 123 is integrated with the air inlet pipe 122. A second card slot 116 is arranged inside the device body 110, and the second card slot 116 is integrated with the device body 110. The second card slot 116 is arranged with the same specification as the first card slot 123. The sealing block 161 is engaged in the first card slot 123, and the sealing block 161 is interference fit with the inner wall of the first card slot 123. The rubber ring 162 is engaged in the second card slot 116, and the rubber ring 162 is interference fit with the second card slot 116.

[0029] In this embodiment: when in use, the gas reaches the inside of the filter element 160 through the first channel 131, and a sealing block 161 and a rubber ring 162 are respectively installed on both sides of the filter element 160. The rubber ring 162 can play a sealing effect. The sealing block 161 is arranged on the surface of the first card slot 123, and the rubber ring 162 is engaged with the surface of the second card slot 116. Since the rubber ring 162 is annular, the air reaches the inside of the filter element 160. While the gas continuously enters the filter element 160, the gas is filtered from the inside of the filter element 160, and then flows into the inside of the filter air chamber 150. By setting the air outlet 170, the filtered gas reaches the inside of the third channel 182 through the air outlet 170, so as to be filled. Gas; by arranging the filter element 160 between the second slot 116 and the first slot 123, and then manually rotating the inflation joint 120 and the device body 110, the installation thread 126 is threadedly connected with the docking thread 124. During the threaded connection process of the inflation joint 120 and the device body 110, the distance between the inflation joint 120 and the device body 110 is reduced, so that the filter element 160 is engaged between the second slot 116 and the first slot 123. The present solution has a simple structure and is easy to operate. By installing the filter element 160 between the inflation joint 120 and the device body 110, the gas is filtered. At the same time, by cooperating with the inflation joint 120 and the device body 110, the filter element 160 is convenient to replace.

[0030] Embodiment 2: This embodiment is intended to promote the solution of the problem of multiple filtration of gas. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 - Figure 6 The cross-sectional shape of the air outlet 170 is set to be L-shaped, and a placement groove 180 is set at the air inlet of the air outlet 170, the placement groove 180 and the air outlet 170 are integrated, a filter net 181 is placed inside the placement groove 180, and the filter net 181 covers the air inlet of the air outlet 170, and a third channel 182 is set inside the inflation joint 120, and the air outlet 170 is respectively communicated with the filter air chamber 150 and the third channel 182.

[0031] The placement groove 180 is provided with threads, and a circular block 183 is provided inside the placement groove 180, and a thread is provided on the outside of the circular block 183. The circular block 183 is threadedly connected to the placement groove 180, and a circular hole 184 is opened on the surface of the circular block 183. The side of the circular block 183 contacts the filter screen 181, and the edge of the filter screen 181 is provided with sealing rubber.

[0032] In this embodiment: when in use, a placement groove 180 is opened at the air inlet of the air outlet 170, and a filter screen 181 is installed inside the placement groove 180. At the same time, a thread is opened inside the placement groove 180, so that the circular block 183 is threaded with the placement groove 180. When the circular block 183 is threadedly connected to the inside of the placement groove 180, the circular block 183 is used to prevent the filter screen 181 from falling off as much as possible. At the same time, a circular hole 184 is provided on the surface of the circular block 183, so that the gas flows into the air outlet 170 through the circular hole 184. This solution has a simple structure and is easy to operate. Through the cooperation of the filter screen 181 and the circular block 183, the gas is filtered for the second time to improve the filtering effect.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A novel SF6 gas inflation filter device, comprising a pressure reducing valve (190), a gas inflation pipe (191) connected to the side of the pressure reducing valve (190), a self-sealing joint (192) installed on the side of the gas inflation pipe (191), a pressure gauge (193) connected to the side of the self-sealing joint (192), and a device body (110) connected to the side of the self-sealing joint (192), characterized in that: An air charging joint (120) is installed on the front side of the device body (110), and a connecting joint (130) is installed on the rear side of the device body (110); the device body (110) is arranged between the air charging joint (120) and the connecting joint (130), and the device body (110), the air charging joint (120) and the connecting joint (130) are in communication with each other; a connecting groove (140) is provided inside the device body (110), a filter air chamber (150) is provided inside the device body (110), a filter core (160) is placed inside the filter air chamber (150), and an air outlet (170) is provided on the bottom side of the air charging joint (120), and the air outlet (170) is in communication with the filter air chamber (150).

2. A novel SF6 gas filling and filtering device according to claim 1, characterized in that: The connecting joint (130) is used to connect to the inflatable device, and a first channel (131) for air circulation is arranged inside the connecting joint (130), and an annular block (132) is integrally arranged inside the first channel (131), and an internal thread (133) is provided inside the first channel (131). A second channel (111) is arranged inside the device body (110), and the second channel (111) is communicated with the filter air chamber (150) and the first channel (131).

3. A novel SF6 gas filling and filtering device according to claim 2, characterized in that: A connecting pipe (112) is integrally provided on the side of the device body (110), and the connecting pipe (112) is inserted into the first channel (131). An external thread (113) is provided on the outside of the connecting pipe (112), and the external thread (113) is threadedly connected to the internal thread (133). The end face of the connecting pipe (112) contacts the annular block (132). A sealing groove (114) is provided inside the connecting joint (130), and a sealing ring (115) is provided inside the sealing groove (114). The upper end face of the sealing ring (115) contacts the side of the device body (110).

4. A novel SF6 gas filling and filtering device according to claim 1, characterized in that: A nozzle (121) for connecting to a gas pipeline is integrally mounted on one side of the inflation joint (120), and an air intake pipe (122) is integrally mounted on the other side of the inflation joint (120). The air intake pipe (122) is inserted into the filter air chamber (150). The diameter of the nozzle (121) is smaller than the diameter of the device body (110). A mounting thread (126) is arranged on the outside of the inflation joint (120). A butt thread (124) is arranged inside the connection groove (140). The butt thread (124) is threadably connected to the mounting thread (126). A sealing ring (125) is arranged on the contact surface between the connection groove (140) and the air intake pipe (122).

5. A novel SF6 gas filling and filtering device according to claim 4, characterized in that: The filter element (160) is configured as a hollow filter element, and a sealing block (161) is installed at one end of the filter element (160), and a rubber ring (162) is installed at the other end of the filter element (160). A first slot (123) is provided inside the air inlet pipe (122), and a second slot (116) is provided inside the device body (110). The second slot (116) is configured with the same specifications as the first slot (123), the sealing block (161) is engaged inside the first slot (123), and the rubber ring (162) is engaged in the second slot (116).

6. A novel SF6 gas filling and filtering device according to claim 1, characterized in that: The cross-sectional shape of the air outlet (170) is set to be L-shaped, and a placement groove (180) is set at the air inlet of the air outlet (170), and the placement groove (180) is integrated with the air outlet (170). A filter net (181) is placed inside the placement groove (180), and the filter net (181) covers the air inlet of the air outlet (170). A third channel (182) is set inside the inflation joint (120), and the air outlet (170) is communicated with the filter air chamber (150) and the third channel (182) respectively.

7. A novel SF6 gas filling and filtering device according to claim 6, characterized in that: The placement groove (180) is provided with a thread, and a circular block (183) is provided inside the placement groove (180), and a thread is provided outside the circular block (183). The circular block (183) is threadedly connected to the placement groove (180), and a circular hole (184) is opened on the surface of the circular block (183), and the side of the circular block (183) is in contact with the filter screen (181).

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