A vacuum-assisted device with pressure remote monitoring and air leakage diagnosis function

Abstract

A kind of vacuum auxiliary device with pressure remote monitoring and gas leakage diagnosis function, including equipment and vacuum pump, the gas outlet of equipment is equipped with valve, the inlet of valve is communicated with the gas outlet of equipment, the vacuum linkage lock of the present application is additionally provided, when carrying out vacuum operation after the butt joint of inlet pipe and outlet pipe, vacuum pressure in outlet pipe can be used to control the contraction of cylinder and transmission rod, so as to drive inlet pipe and sealing ring to cooperate with a certain pressure, so as to provide support for the butt joint of inlet pipe and outlet pipe, avoid the easy appearance of skew in the process of vacuumizing when inlet pipe and outlet pipe are butt jointed, improve the air tightness between inlet pipe and outlet pipe.

Description

Technical Field

[0001] This invention relates to a vacuum pumping auxiliary device, and more specifically, a vacuum pumping auxiliary device with remote pressure monitoring and leak diagnosis functions. Background Technology

[0002] The vacuuming process is a crucial step before oil filling in large transformers and gas filling in GIS equipment. On one hand, it effectively removes air impurities from inside transformers and GIS equipment, ensuring that the insulation strength of the injected insulating oil, SF6 gas, and other insulating media meets technical requirements. On the other hand, it effectively checks the integrity of the sealing parts of transformers and GIS equipment, preventing oil and gas leaks. However, with existing vacuuming auxiliary devices, if the connection between the vacuum pump's inlet pipe and the outlet pipe of the large transformer or GIS equipment is misaligned, it can easily lead to gas leaks. Summary of the Invention

[0003] The purpose of this invention is to provide a vacuuming auxiliary device with remote pressure monitoring and leak diagnosis functions. When performing vacuuming operation after the inlet pipe and outlet pipe are connected, the vacuum pressure inside the outlet pipe can be used to control the cylinder and transmission rod to contract, thereby driving the inlet pipe and the sealing ring to cooperate with a certain pressure. This provides support for the connection between the inlet pipe and the outlet pipe, avoids easy misalignment during the vacuuming process of connecting the inlet pipe and the outlet pipe, and improves the airtightness between the inlet pipe and the outlet pipe.

[0004] To achieve the above objectives, the present invention employs the following technical solution: A vacuum auxiliary device with remote pressure monitoring and leak diagnosis functions includes a device and a vacuum pump. A valve is installed at the gas outlet of the device, with its inlet connected to the gas outlet of the device and its outlet connected to an outlet pipe. The inlet of the vacuum pump is connected to an inlet pipe, which can connect to the outlet pipe. A vacuum linkage lock is installed between the inlet pipe and the outlet pipe. The vacuum linkage lock includes two sets of cylinder holders, each containing a cylinder. The outer side of the cylinder is connected to the outer side of the outlet pipe. The cylinder is a tubular shell structure with one end sealed, and the sealed end of the cylinder is connected to a guide... The air pipe has one end that mates with the cylinder and the other end that connects to the inside of the outlet pipe. A piston is installed inside the cylinder, with its side circumference fitting against the inner wall of the cylinder. A transmission rod is connected to one side of the piston. One end of the transmission rods of the two vacuum linkage locks is connected to a sleeve, with the outer side of the sleeve mates with the transmission rod. The sleeve can be fitted onto the inlet pipe. A threaded hole is opened on the side wall of the sleeve, and a positioning bolt is threaded through the threaded hole. A fixing ring is fitted onto the inlet pipe, with the inner side of the fixing ring connecting to the outer side of the inlet pipe. The screw end of the positioning bolt mates with the fixing ring. A remote controller is installed on the vacuum pump.

[0005] To further achieve the objectives of this invention, the following technical solution can also be adopted: a positioning ring is installed inside the air outlet pipe, the side circumference of the positioning ring is connected to the side circumference of the inner wall of the air outlet pipe, a sealing ring is connected to one side of the positioning ring, a sealing groove is opened on one side of the sealing ring, the sealing groove is a frustum-shaped groove, the bottom of the sealing groove is connected to the middle hole of the positioning ring, and an annular inclined surface is opened on one end of the air inlet pipe, the annular inclined surface can cooperate with the side circumference of the sealing groove.

[0006] The vacuum pump is connected to a positioning rod on one side, and the equipment is connected to a positioning tube on the other side. The positioning rod and the positioning tube can be inserted and matched.

[0007] The remote controller includes two remote control switches and two remote controllers. The valve is a solenoid valve. The battery and the remote control switch are connected to the outside of the vacuum pump. The output terminal of the battery is connected to the power input terminal of the remote control switch. The control terminal of one remote control switch is connected to the controlled terminal of the valve, and the output terminal of the other remote control switch is connected to the power input terminal of the vacuum pump. The remote control switch is connected to the remote controller via a wireless signal.

[0008] The device includes a wireless pressure sensor installed on its outer side, with the sensor's detection end connected to the valve's inlet.

[0009] The advantages of this invention are as follows: This invention adds a vacuum linkage locking device. When the vacuum is drawn after the air inlet pipe and the air outlet pipe are connected, the vacuum linkage locking device can use the vacuum pressure inside the air outlet pipe to control the cylinder and transmission rod to contract, thereby driving the air inlet pipe and the sealing ring to cooperate with a certain pressure. This provides support for the connection between the air inlet pipe and the air outlet pipe, avoids easy misalignment during the vacuuming process of connecting the air inlet pipe and the air outlet pipe, and improves the airtightness between the air inlet pipe and the air outlet pipe. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is one of the structural schematic diagrams of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of Part I; Figure 3 This is the second structural schematic diagram of the present invention; Figure 4 This is the third structural schematic diagram of the present invention; Figure 5 This is the fourth structural schematic diagram of the present invention; Figure 6 for Figure 5 Enlarged structural diagram of Part II; Figure 7This is a schematic diagram of the product structure of the wireless pressure sensor used in this application; Figure 8 This is a schematic diagram of the product structure of the remote control switch and remote control used in this application. Detailed Implementation

[0011] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0012] A vacuuming auxiliary device with remote pressure monitoring and leak diagnosis functions, such as Figures 1-6 As shown, the device includes equipment 1 and a vacuum pump 4. A valve 18 is installed at the gas outlet of equipment 1. The inlet of valve 18 is connected to the gas outlet of equipment 1, and the outlet of valve 18 is connected to an outlet pipe 2. The inlet of the vacuum pump 4 is connected to an inlet pipe 3, which can connect to the outlet pipe 2. A vacuum linkage lock is installed between the inlet pipe 3 and the outlet pipe 2. The vacuum linkage lock includes two sets of cylinder retainers. Each cylinder retainer includes a cylinder 12, the outer side of which is connected to the outer side of the outlet pipe 2. The cylinder 12 is a tubular shell structure with one end sealed. The sealed end of the cylinder 12 is connected to a guide pipe 11, and one end of the guide pipe 11 is connected to the cylinder 12. In conjunction with this, the other end of the air guide pipe 11 is connected to the interior of the air outlet pipe 2. A piston 10 is installed inside the cylinder 12, and the side circumference of the piston 10 fits against the inner wall side circumference of the cylinder 12. One side of the piston 10 is connected to the transmission rod 9. One end of the transmission rod 9 of the two vacuum linkage locks is connected to the sleeve 8. The outer side of the sleeve 8 cooperates with the transmission rod 9. The sleeve 8 can be fitted onto the air inlet pipe 3. A screw hole is opened on the side wall of the sleeve 8. The sleeve 8 is threadedly connected to the positioning bolt 7 through the screw hole. A fixing ring 17 is fitted on the air inlet pipe 3. The inner side of the fixing ring 17 is connected to the outer side of the air inlet pipe 3. The screw end of the positioning bolt 7 cooperates with the fixing ring 17. A remote controller is installed on the vacuum pump 4.

[0013] This invention adds a vacuum linkage locker. When vacuuming is performed after the inlet pipe 3 and outlet pipe 2 are connected, the vacuum linkage locker can use the vacuum pressure inside the outlet pipe 2 to control the cylinder 12 and transmission rod 9 to contract, thereby driving the inlet pipe 3 and the sealing ring 14 to cooperate with a certain pressure. This provides support for the connection between the inlet pipe 3 and outlet pipe 2, preventing easy skewing during the vacuuming process and improving the airtightness between the inlet pipe 3 and outlet pipe 2. Specific material selection and feasibility analysis: The samples we actually produced used the attached drawings in the instruction manual as the blueprints, and were implemented according to the proportions and assembly methods of each component in the drawings. The connections used were common methods such as strong adhesive bonding, welding, riveting, flange connections, and one-piece molding connections. During actual production, the corresponding connection method, thickness, and strength of the connection points can be selected according to the actual connection strength requirements without creative design. Equipment 1 is a large transformer or GIS-type equipment. After the inlet pipe 3 and outlet pipe 2 are connected, the sleeve 8 is fitted onto the inlet pipe 3. At this time, personnel can rotate the positioning bolt 7 to engage the threaded rod of the positioning bolt 7 with the fixing ring 17, thereby... Figure 2 To prevent the sleeve 8 from sliding to the left relative to the fixed ring 17, after the vacuum pump 4 is turned on and vacuuming begins, the inside of the cylinder 12 is also evacuated under the action of the air guide pipe 11. At this time, Figure 2 In the process, piston 10 slides to the left relative to cylinder 12, driving transmission rod 9 to pull sleeve 8 to the left, thereby causing intake pipe 3 and sealing ring 14 to engage under certain pressure, improving the stability of the connection between intake pipe 3 and sealing ring 14. After vacuuming is completed, valve 18 can be closed. Example

[0014] A vacuuming auxiliary device with remote pressure monitoring and leak diagnosis functions, such as Figures 1-6As shown, the device includes equipment 1 and a vacuum pump 4. A valve 18 is installed at the gas outlet of equipment 1. The inlet of valve 18 is connected to the gas outlet of equipment 1, and the outlet of valve 18 is connected to an outlet pipe 2. The inlet of the vacuum pump 4 is connected to an inlet pipe 3, which can connect to the outlet pipe 2. The device is characterized in that a vacuum linkage lock is installed between the inlet pipe 3 and the outlet pipe 2. The vacuum linkage lock includes two sets of cylinder holders. Each cylinder holder includes a cylinder 12, the outer side of which is connected to the outer side of the outlet pipe 2. The cylinder 12 is a tubular shell structure with one end sealed. The sealed end of the cylinder 12 is connected to a gas guide pipe 11, and one end of the gas guide pipe 11 is connected to the gas outlet pipe 2. Cylinder 12 is fitted with the other end of the air guide pipe 11, which is connected to the inside of the air outlet pipe 2. Piston 10 is installed inside cylinder 12. The side of piston 10 fits against the side of the inner wall of cylinder 12. One side of piston 10 is connected to transmission rod 9. One end of transmission rod 9 of both vacuum linkage locks is connected to sleeve 8. The outside of sleeve 8 fits with transmission rod 9. Sleeve 8 can be fitted onto air inlet pipe 3. Screw holes are opened on the side wall of sleeve 8. Sleeve 8 is threadedly connected to positioning bolt 7 through screw holes. Fixing ring 17 is fitted on air inlet pipe 3. The inside of fixing ring 17 is connected to the outside of air inlet pipe 3. The screw end of positioning bolt 7 fits with fixing ring 17. A remote controller is installed on vacuum pump 4. A positioning ring 13 is installed inside the air outlet pipe 2. The side circumference of the positioning ring 13 is connected to the side circumference of the inner wall of the air outlet pipe 2. A sealing ring 14 is connected to one side of the positioning ring 13. A sealing groove 15 is opened on one side of the sealing ring 14. The sealing groove 15 is a frustum-shaped groove. The bottom of the sealing groove 15 is connected to the middle hole of the positioning ring 13. An annular inclined surface 16 is opened on the side circumference of one end of the air inlet pipe 3. The annular inclined surface 16 can cooperate with the side circumference of the sealing groove 15.

[0015] The annular inclined surface 16 of the present invention cooperates with the sealing groove 15 to increase the contact area between the air intake pipe 3 and the sealing ring 14, thereby improving the sealing performance between the air intake pipe 3 and the sealing ring 14. Example

[0016] A vacuuming auxiliary device with remote pressure monitoring and leak diagnosis functions, such as Figures 1-6As shown, the device includes equipment 1 and a vacuum pump 4. A valve 18 is installed at the gas outlet of equipment 1. The inlet of valve 18 is connected to the gas outlet of equipment 1, and the outlet of valve 18 is connected to an outlet pipe 2. The inlet of the vacuum pump 4 is connected to an inlet pipe 3, which can connect to the outlet pipe 2. The device is characterized in that a vacuum linkage lock is installed between the inlet pipe 3 and the outlet pipe 2. The vacuum linkage lock includes two sets of cylinder holders. Each cylinder holder includes a cylinder 12, the outer side of which is connected to the outer side of the outlet pipe 2. The cylinder 12 is a tubular shell structure with one end sealed. The sealed end of the cylinder 12 is connected to a gas guide pipe 11, and one end of the gas guide pipe 11 is connected to the gas outlet pipe 2. Cylinder 12 is fitted with a guide pipe 11, the other end of which is connected to the interior of the outlet pipe 2. A piston 10 is installed inside cylinder 12, and the side circumference of piston 10 fits against the inner wall of cylinder 12. One side of piston 10 is connected to a transmission rod 9. One end of the transmission rod 9 of both vacuum linkage locks is connected to a sleeve 8, the outer side of which fits with the transmission rod 9. The sleeve 8 can be fitted onto the inlet pipe 3. A threaded hole is opened on the side wall of the sleeve 8, and a positioning bolt 7 is threadedly connected to the sleeve 8 through the threaded hole. A fixing ring 17 is fitted onto the inlet pipe 3, the inner side of which is connected to the outer side of the inlet pipe 3. The screw end of the positioning bolt 7 fits with the fixing ring 17. A remote controller is installed on the vacuum pump 4. One side of the vacuum pump 4 is connected to a positioning rod 5, and one side of the device 1 is connected to a positioning tube 6. The positioning rod 5 and the positioning tube 6 can be inserted and fitted together.

[0017] The positioning rod 5 and the positioning tube 6 of the present invention can be inserted and matched to improve the stability of the equipment 1 and the vacuum pump 4. Example

[0018] A vacuuming auxiliary device with remote pressure monitoring and leak diagnosis functions, such as Figures 1-6As shown, the device includes equipment 1 and a vacuum pump 4. A valve 18 is installed at the gas outlet of equipment 1. The inlet of valve 18 is connected to the gas outlet of equipment 1, and the outlet of valve 18 is connected to an outlet pipe 2. The inlet of the vacuum pump 4 is connected to an inlet pipe 3, which can connect to the outlet pipe 2. The device is characterized in that a vacuum linkage lock is installed between the inlet pipe 3 and the outlet pipe 2. The vacuum linkage lock includes two sets of cylinder holders. Each cylinder holder includes a cylinder 12, the outer side of which is connected to the outer side of the outlet pipe 2. The cylinder 12 is a tubular shell structure with one end sealed. The sealed end of the cylinder 12 is connected to a gas guide pipe 11, and one end of the gas guide pipe 11 is connected to the gas outlet pipe 2. Cylinder 12 is fitted with the other end of the air guide pipe 11, which is connected to the inside of the air outlet pipe 2. Piston 10 is installed inside cylinder 12. The side of piston 10 fits against the side of the inner wall of cylinder 12. One side of piston 10 is connected to transmission rod 9. One end of transmission rod 9 of both vacuum linkage locks is connected to sleeve 8. The outside of sleeve 8 fits with transmission rod 9. Sleeve 8 can be fitted onto air inlet pipe 3. Screw holes are opened on the side wall of sleeve 8. Sleeve 8 is threadedly connected to positioning bolt 7 through screw holes. Fixing ring 17 is fitted on air inlet pipe 3. The inside of fixing ring 17 is connected to the outside of air inlet pipe 3. The screw end of positioning bolt 7 fits with fixing ring 17. A remote controller is installed on vacuum pump 4. The remote controller includes two remote control switches 20 and two remote controllers 22. The valve 18 is a solenoid valve. The external side of the vacuum pump 4 is connected to the battery 19 and the remote control switch 20. The output end of the battery 19 is connected to the power input end of the remote control switch 20. The control end of one remote control switch 20 is connected to the controlled end of the valve 18, and the output end of the other remote control switch 20 is connected to the power input end of the vacuum pump 4. The remote control switch 20 is connected to the remote controller 22 via a wireless signal.

[0019] Personnel can remotely check the vacuum pressure inside the equipment 1 through the wireless pressure sensor 21, and control the opening and closing of the valve 18 and the vacuum pump 4 through the remote controller 22 and the remote control switch 20. When the equipment 1 is not in a vacuum, personnel can open the valve 18 and the vacuum pump 4 at the same time to perform a vacuuming operation. After the operation is completed, the valve 18 and the vacuum pump 4 can be closed through the remote controller 22 and the remote control switch 20. Example

[0020] A vacuuming auxiliary device with remote pressure monitoring and leak diagnosis functions, such as Figures 1-6As shown, the device includes equipment 1 and a vacuum pump 4. A valve 18 is installed at the gas outlet of equipment 1. The inlet of valve 18 is connected to the gas outlet of equipment 1, and the outlet of valve 18 is connected to an outlet pipe 2. The inlet of the vacuum pump 4 is connected to an inlet pipe 3, which can connect to the outlet pipe 2. The device is characterized in that a vacuum linkage lock is installed between the inlet pipe 3 and the outlet pipe 2. The vacuum linkage lock includes two sets of cylinder holders. Each cylinder holder includes a cylinder 12, the outer side of which is connected to the outer side of the outlet pipe 2. The cylinder 12 is a tubular shell structure with one end sealed. The sealed end of the cylinder 12 is connected to a gas guide pipe 11, and one end of the gas guide pipe 11 is connected to the gas outlet pipe 2. Cylinder 12 is fitted with a guide pipe 11, the other end of which is connected to the interior of the outlet pipe 2. A piston 10 is installed inside cylinder 12, and the side circumference of piston 10 fits against the inner wall of cylinder 12. One side of piston 10 is connected to a transmission rod 9. One end of the transmission rod 9 of the two vacuum linkage locks is connected to a sleeve 8. The outer side of the sleeve 8 is fitted with the transmission rod 9. The sleeve 8 can be fitted onto the inlet pipe 3. A threaded hole is opened on the side wall of the sleeve 8, and a positioning bolt 7 is threadedly connected to the sleeve 8 through the threaded hole. A fixing ring 17 is fitted on the inlet pipe 3, and the inner side of the fixing ring 17 is connected to the outer side of the inlet pipe 3. The screw end of the positioning bolt 7 is fitted with the fixing ring 17. A remote controller is installed on the vacuum pump 4. A wireless pressure sensor 21 is installed on the outside of the device 1, and the detection end of the wireless pressure sensor 21 is connected to the interior of the inlet of valve 18.

[0021] The wireless pressure sensor 21 of this invention can be a wireless pressure sensor from the brand: Shanghai Weiertai.

[0022] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. A vacuum auxiliary device with remote pressure monitoring and leak diagnosis functions, comprising a device (1) and a vacuum pump (4), wherein a valve (18) is installed at the gas outlet of the device (1), the inlet of the valve (18) is connected to the gas outlet of the device (1), the outlet of the valve (18) is connected to the outlet pipe (2), the inlet of the vacuum pump (4) is connected to the inlet pipe (3), and the inlet pipe (3) can be connected to the outlet pipe (2), characterized in that: A vacuum linkage lock is installed between the air inlet pipe (3) and the air outlet pipe (2). The vacuum linkage lock includes two sets of cylinder retainers. Each cylinder retainer includes a cylinder (12). The outer side of the cylinder (12) is connected to the outer side of the air outlet pipe (2). The cylinder (12) is a tubular shell structure with one end sealed. The sealed end of the cylinder (12) is connected to the air guide pipe (11). One end of the air guide pipe (11) is engaged with the cylinder (12). The other end of the air guide pipe (11) is connected to the inside of the air outlet pipe (2). A piston (10) is installed inside the cylinder (12). The side circumference of the piston (10) is connected to the cylinder (12). The inner wall of the piston (10) is attached to the side of the piston (10). The transmission rod (9) is connected to one side of the piston (10). The transmission rod (9) of the two vacuum linkage locks is connected to the sleeve (8) at one end. The outer side of the sleeve (8) is engaged with the transmission rod (9). The sleeve (8) can be fitted onto the air inlet pipe (3). The side wall of the sleeve (8) is opened with a screw hole. The sleeve (8) is threadedly connected to the positioning bolt (7) through the screw hole. The air inlet pipe (3) is fitted with a fixing ring (17). The inner side of the fixing ring (17) is connected to the outer side of the air inlet pipe (3). The screw end of the positioning bolt (7) is engaged with the fixing ring (17). A remote controller is installed on the vacuum pump (4). A positioning ring (13) is installed inside the air outlet pipe (2). The side circumference of the positioning ring (13) is connected to the side circumference of the inner wall of the air outlet pipe (2). A sealing ring (14) is connected to one side of the positioning ring (13). A sealing groove (15) is opened on one side of the sealing ring (14). The sealing groove (15) is a frustum-shaped groove. The bottom of the sealing groove (15) is connected to the middle hole of the positioning ring (13). An annular inclined surface (16) is opened on the side circumference of one end of the air inlet pipe (3). The annular inclined surface (16) can cooperate with the side circumference of the sealing groove (15). The remote controller includes two remote control switches (20) and two remote controllers (22). The valve (18) is a solenoid valve. The battery (19) and the remote control switch (20) are connected to the outside of the vacuum pump (4). The output end of the battery (19) is connected to the power input end of the remote control switch (20). The control end of one of the remote control switches (20) is connected to the controlled end of the valve (18), and the output end of the other remote control switch (20) is connected to the power input end of the vacuum pump (4). The remote control switch (20) is connected to the remote controller (22) via a wireless signal. A wireless pressure sensor (21) is installed on the outside of the device (1), and the detection end of the wireless pressure sensor (21) is connected to the inside of the inlet of the valve (18).

2. The vacuum auxiliary device with remote pressure monitoring and leak diagnosis function according to claim 1, characterized in that: The vacuum pump (4) is connected to a positioning rod (5) on one side, and the device (1) is connected to a positioning tube (6) on one side. The positioning rod (5) and the positioning tube (6) can be inserted and matched.

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