Disassembly-free online checking three-way valve for SF6 density relay

Abstract

The utility model discloses an SF6 density relay disassembly-free on-line verification three-way valve, which comprises a mounting seat, the mounting seat is connected with a processing piece, and the processing piece comprises a three-way valve main body arranged on the mounting seat; the density relay is arranged on the right side of the three-way valve body for gas detection; and the sealing element is arranged at the upper side of the mounting seat and is used for sealing the detection port at the front side of the three-way valve main body. According to the disassembly-free online checking three-way valve for the SF6 density relay, after a detection opening of the three-way valve body is in butt joint with a detection pipe of an external checker, the positions of a movable frame, a round frame and an annular air bag are adjusted through cooperation of a first screw rod and a first rotating disc, so that the annular air bag moves to the outer side of the butt joint end of the detection opening and the detection pipe; and the shell is matched with the second screw rod, the second rotating disc, the moving frame and the piston, and expansion of the annular air bag is achieved by adjusting nitrogen in the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to SF6 density relay check technical field, concretely is a kind of SF6 density relay disassembly-free online check tee valve. BACKGROUND

[0002] To ensure SF6 density relay safety and accurate use, corresponding online check tee valve needs to be used for disassembly-free check processing, reference authorized announcement No.CN221347979U's a kind of disassembly-free online check tee valve, including valve body, the side of valve body has body connection mouth, with the body connection mouth adjacent one side is equipped with regulating valve stem, with regulating valve stem adjacent one side is equipped with density relay, the disassembly-free online check tee valve of this, by ingenious structure design, make it can not be disassembled in operation, density relay can be conveniently implemented check, meet the demand of not stopping power, not disassembly check density relay, as described in the above patent, when using existing SF6 density relay disassembly-free online check tee valve, most of the devices are not sealed at the outside of the connection between the check end and the tee valve detection end, which can cause gas leakage during detection, and further cause safety hazards.In addition, the sealing effect of the detection end of the device is poor when the tee valve detection end does not need to be detected, which can easily contaminate the inside of the tee valve detection end. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a kind of SF6 density relay disassembly-free online check tee valve, solve the poor sealing effect of the outside of the connection between the tee valve detection end and the check end in device, and the problem of easy gas leakage.

[0004] To achieve the above object, the utility model is implemented by the following technical solutions: a kind of SF6 density relay disassembly-free online check tee valve, including mounting seat, the mounting seat is connected with the processing piece for SF6 density relay disassembly-free online check processing, and the processing piece includes:

[0005] Tee valve main body, is arranged on mounting seat for gas flow switching;

[0006] Density relay, is arranged on the right side of tee valve main body for gas detection;

[0007] The sealing piece is arranged on the upper side of the mounting base and is used for sealing the front side detection port of the three-way valve body, the sealing piece comprises a first screw rod which is rotationally connected to the mounting base, the first screw rod is located at the lower end of the front side detection port of the three-way valve body, a first rotating disc is arranged on the front side of the first screw rod, the first screw rod is threadedly connected with a moving frame which is slidably connected to the mounting base, a circular frame for sealing position adjustment is arranged on the upper end of the moving frame and is close to the outer side of the detection port of the three-way valve body, an annular air bag for sealing after the detection port of the three-way valve body is connected with the detection pipe of the external verifier and for containing nitrogen is arranged on the inner wall of the circular frame, an adjusting piece for adjusting the expansion degree of the annular air bag is arranged on the top of the circular frame, and a cover plate assembly for sealing the inside of the front side verification port of the three-way valve body is arranged on the front side of the moving frame.

[0008] Two groups of auxiliary sealing pieces are arranged on the left side and the rear side of the mounting base and are used for sealing the air inlet and the air outlet of the three-way valve body, and the internal structures of the two groups of auxiliary sealing pieces are same as those of the sealing piece.

[0009] Preferably, the sealing piece further comprises a sliding rod which is arranged on the mounting base and is slidably connected to the two sides of the moving frame, and the inner wall of the annular air bag is flush with the inner wall of the circular frame so as to reduce the friction with the three-way valve body.

[0010] Preferably, the adjusting piece comprises a shell which is arranged on the top of the circular frame and contains nitrogen, a piston for compressing nitrogen is slidably connected to the inner side of the shell, a moving frame which is slidably connected to the inside of the shell is arranged on the upper side of the piston, a second screw rod which is threadedly connected to the middle part of the moving frame is rotationally connected to the inner upper end of the shell, a second rotating disc is arranged on the top of the second screw rod and is close to the outer end of the shell, and the bottom of the shell is fixedly connected with the annular air bag so as to promote the expansion and contraction of the annular air bag through air exchange.

[0011] Preferably, a stopper for preventing the moving frame from being separated is arranged on the bottom of the second screw rod, the piston is located at the lower end of the stopper, and the bottom of the shell is in communication with the inside of the annular air bag.

[0012] Preferably, the cover plate assembly comprises a rotating shaft which is rotationally connected to the front side of the moving frame, a cover plate for sealing the inside of the front side detection port of the three-way valve body is arranged on the front side of the rotating shaft, and a plug plate for assisting in sealing the detection port is arranged on the lower end of the rear side of the cover plate.

[0013] Preferably, a convex ring which is rotationally connected to the inner side of the moving frame is arranged on the rear side of the rotating shaft, the plug plate is a circular plate and is matched with the inner wall of the front side detection port of the three-way valve body.

[0014] The SF6 density relay disassembly-free online calibration three-way valve provided by the utility model has the following beneficial effects compared with the prior art:

[0015] (1), the SF6 density relay disassembly-free online calibration three-way valve, by setting sealing element in the device, after the three-way valve main body detection port and the outside calibrator detection tube butt joint, through the first screw, the first turntable cooperation, the mobile frame, the round frame, the annular air bag position is adjusted, the annular air bag is moved to the detection port and the detection tube butt joint end outside, it is helpful to subsequent sealing operation, let the shell and the second screw, the second turntable, the mobile frame, the piston cooperate with each other, through the adjustment of nitrogen in the shell, realize the inflation of annular air bag, and then make the annular air bag adhere to seal the outside of the detection port and the detection end connection end, so as to reduce the leakage of three-way valve main body detection port end due to detection, reduce the security risk.

[0016] (2), the SF6 density relay disassembly-free online calibration three-way valve, by setting cover plate assembly in the device, when the three-way valve main body front side detection port is not detected and needs to be closed, rotate the cover plate, the cover plate rotates around the shaft as the axis, after the plug plate center and the three-way valve main body front side detection port center are on the same axis, let the first screw adjust the mobile frame, the cover plate assembly position, make the plug plate insert into the three-way valve main body detection port, and the cover plate is attached to the front side of the three-way valve main body detection port, which fully seals the three-way valve main body front side detection port end and improves the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the utility model;

[0018] Figure 2 It is the partial section enlarged view of sealing element of the utility model;

[0019] Figure 3 It is the section enlarged view of adjusting part of the utility model;

[0020] Figure 4 It is the enlarged view of cover plate assembly of the utility model.

[0021] In the drawing: 1, mounting seat; 2, three-way valve main body; 3, density relay; 4, sealing element; 41, first screw; 42, first turntable; 43, mobile frame; 44, round frame; 45, annular air bag; 46, adjusting part; 461, shell; 462, second screw; 463, second turntable; 464, mobile frame; 465, piston; 47, cover plate assembly; 471, cover plate; 472, shaft; 473, plug plate; 5, accessory sealing element. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0023] Reference Figures 1-4 The present utility model provides the following two technical solutions:

[0024] The first embodiment is a SF6 density relay disassembly-free online calibration three-way valve, which comprises a mounting seat 1, and a processing piece for SF6 density relay disassembly-free online calibration processing is connected to the mounting seat 1. The processing piece comprises: a three-way valve body 2 arranged on the mounting seat 1 for switching the flow direction of gas; and a density relay 3 arranged on the right side of the three-way valve body 2 for gas detection.

[0025] A sealing piece 4 is arranged on the upper side of the mounting seat 1 for sealing the front side detection port of the three-way valve body 2. The sealing piece 4 comprises a first screw rod 41 rotatably connected to the mounting seat 1, the first screw rod 41 is located at the lower end of the front side detection port of the three-way valve body 2, a first turntable 42 is arranged on the front side of the first screw rod 41, the first screw rod 41 is threadedly connected with a moving frame 43 for sliding connection with the mounting seat 1, a circular frame 44 for sealing position adjustment is arranged on the upper end of the moving frame 43 close to the outer side of the detection port of the three-way valve body 2, an annular air bag 45 for sealing after the detection port of the three-way valve body 2 is connected with the detection tube of an external calibrator and for containing nitrogen is arranged on the inner wall of the circular frame 44, an adjusting piece 46 for adjusting the expansion degree of the annular air bag 45 is arranged on the top of the circular frame 44, and a cover plate assembly 47 for sealing the inside of the front side calibration port of the three-way valve body 2 is arranged on the front side of the moving frame 43.

[0026] Two groups of auxiliary sealing pieces 5 are arranged on the left side and the rear side of the mounting seat 1 for sealing the gas inlet and the gas outlet of the three-way valve body 2, and the internal structures of the two groups of auxiliary sealing pieces 5 are the same as those of the sealing piece 4. The sealing piece 4 further comprises a slide rod arranged on the mounting seat 1 and slidingly connected to the two sides of the moving frame 43, and the inner wall of the annular air bag 45 is flush with the inner wall of the circular frame 44 to reduce the friction with the three-way valve body 2. The adjusting piece 46 comprises a shell 461 arranged on the top of the circular frame 44 and containing nitrogen, a piston 465 for compressing nitrogen is slidingly connected to the inner side of the shell 461, the nitrogen is located on the lower side of the piston 465, a moving frame 464 slidingly connected to the inside of the shell 461 is arranged on the upper side of the piston 465, a second screw rod 462 threadedly connected to the middle part of the moving frame 464 is rotatably connected to the inner upper end of the shell 461, a second turntable 463 is arranged on the top of the second screw rod 462 close to the outer end of the shell 461, and the bottom of the shell 461 is fixedly connected with the annular air bag 45 to promote the expansion and contraction of the annular air bag 45 through air exchange.

[0027] The second screw 462 is provided with a stopper at the bottom for preventing the moving frame 464 from being detached, and a piston 465 is arranged at the lower end of the stopper, and the bottom of the shell 461 is communicated with the inside of the annular air bag 45; after the detection port of the three-way valve body 2 is connected with the detection tube of the external verifier, the position of the moving frame 43, the circular frame 44 and the annular air bag 45 is adjusted by the first screw 41 and the first rotating disc 42, so that the annular air bag 45 is moved to the outside of the connecting end of the detection port and the detection tube, and the shell 461, the second screw 462, the second rotating disc 463, the moving frame 464 and the piston 465 are matched with each other, and the inflation of the annular air bag 45 is realized by adjusting the nitrogen in the shell 461, so as to make the annular air bag 45 adhere to and seal the outside of the connecting end of the detection port and the detection tube;

[0028] The second embodiment is mainly different from the first embodiment in that:

[0029] The cover plate assembly 47 comprises a rotating shaft 472 rotatably connected to the front side of the moving frame 43, and the rotating shaft 472 is provided with a cover plate 471 for sealing the inside of the front side detection port of the three-way valve body 2, and the rear side lower end of the cover plate 471 is provided with a plug plate 473 for assisting in sealing the detection port;

[0030] The rear side of the rotating shaft 472 is provided with a convex ring rotatably connected to the inside of the moving frame 43, and the plug plate 473 is a circular plate matched with the inner wall of the front side detection port of the three-way valve body 2; when the front side detection port of the three-way valve body 2 does not need to be detected and needs to be sealed, the cover plate 471 is rotated, the cover plate 471 rotates around the rotating shaft 472 as the axis, and after the center of the plug plate 473 and the center of the front side detection port of the three-way valve body 2 are on the same axis, the first screw 41 is adjusted to move the position of the moving frame 43 and the cover plate assembly 47, so that the plug plate 473 is inserted into the detection port of the three-way valve body 2, and the cover plate 471 is adhered to the front side of the detection port of the three-way valve body 2.

[0031] Meanwhile, the contents not described in detail in the specification are all the existing technologies known by those skilled in the art, and the model parameters of each electric appliance are not specifically limited, and conventional equipment can be used.

[0032] In use, the pipe connecting the left inlet of the three-way valve body 2, the rear exhaust port and the gas circuit is connected, and the density relay 3 detects the gas flowing in the process, when the three-way valve body 2 needs to be detected, the calibrator detection tube is connected and installed with the front detection port of the three-way valve body 2, the first screw rod 41 is driven to rotate by the first rotating disc 42, the moving frame 43, the circular frame 44, the annular air bag 45, the adjusting piece 46 and the cover plate assembly 47 are moved by rotating the first screw rod 41, and the annular air bag 45 is moved to the outside of the detection port of the three-way valve body 2 and the connecting end of the calibrator detection tube, the first screw rod 41 is stopped, the second screw rod 462 is driven to rotate by the second rotating disc 463, the moving frame 464 and the piston 465 slide along the inside of the shell 461 by rotating the second screw rod 462, the nitrogen in the shell 461 is extruded into the annular air bag 45 by sliding the piston 465, the annular air bag 45 is inflated and attached to the outside of the detection port of the three-way valve body 2 and the detection end of the calibrator detection tube, and the three-way valve body 2 is reversed, at this time, the gas is guided into the calibrator through the detection port of the three-way valve body 2 and the calibrator detection tube, so that the calibrator verifies the density relay 3, wherein the density relay 3 and the calibrator are prior art, and therefore the specific structure and working principle thereof will not be described.

[0033] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A SF6 density relay non-disassembly online calibration tee valve, comprising a mounting seat, characterized in that: The mounting base is connected with a processing piece for SF6 density relay free disassembly online verification processing, the processing piece comprises: The three-way valve body is arranged on the mounting base and used for switching the gas flow direction; The density relay is arranged on the right side of the three-way valve body and used for gas detection; The sealing piece is arranged on the upper side of the mounting base and used for sealing the front side detection port of the three-way valve body, the sealing piece comprises a first screw rod rotatably connected to the mounting base, the first screw rod is located at the lower end of the front side detection port of the three-way valve body, a first rotating disc is arranged on the front side of the first screw rod, a moving frame is threadedly connected to the first screw rod and slidably connected to the mounting base, a circular frame for adjusting the sealing position is arranged on the upper end of the moving frame and close to the outer side of the detection port of the three-way valve body, an annular air bag for sealing after the detection port of the three-way valve body is connected with the detection tube of the external verifier and containing nitrogen is arranged on the inner wall of the circular frame, an adjusting piece for adjusting the inflation degree of the annular air bag is arranged on the top of the circular frame, and a cover plate assembly for sealing the inside of the front side verification port of the three-way valve body is arranged on the front side of the moving frame. Two groups of auxiliary sealing pieces are arranged on the left side and the rear side of the mounting base and used for sealing the gas inlet and outlet of the three-way valve body, and the internal structures of the two groups of auxiliary sealing pieces are the same as those of the sealing piece.

2. The SF6 density relay maintenance-free on-line calibration tee valve according to claim 1, characterized in that: The sealing piece further comprises a slide rod arranged on the mounting base and slidably connected to the two sides of the moving frame, and the inner wall of the annular air bag is flush with the inner wall of the circular frame to reduce the friction with the three-way valve body.

3. The SF6 density relay maintenance-free on-line calibration three-way valve according to claim 1, characterized in that: The adjusting piece comprises a shell arranged on the top of the circular frame and containing nitrogen, a piston for compressing nitrogen is slidably connected to the inner side of the shell, a moving frame is slidably connected to the inner side of the shell and arranged on the upper side of the piston, a second screw rod is rotatably connected to the inner upper end of the shell and threadedly connected to the middle part of the moving frame, a second rotating disc is arranged on the top of the second screw rod and close to the outer end of the shell, and the bottom of the shell is fixedly connected with the annular air bag to promote the inflation and contraction of the annular air bag through ventilation.

4. The SF6 density relay maintenance-free on-line calibration tee valve according to claim 3, characterized in that: A stopper for preventing the moving frame from being separated is arranged on the bottom of the second screw rod, the piston is located at the lower end of the stopper, and the bottom of the shell is in communication with the inside of the annular air bag.

5. The SF6 density relay maintenance-free on-line calibration tee valve according to claim 1, characterized in that: The cover plate assembly comprises a rotating shaft rotatably connected to the front side of the moving frame, a cover plate for sealing the inside of the front side detection port of the three-way valve body is arranged on the front side of the rotating shaft, and a plug plate for assisting in sealing the detection port is arranged on the lower end of the rear side of the cover plate.

6. The SF6 density relay maintenance-free on-line calibration tee valve according to claim 5, characterized in that: A convex ring rotatably connected to the inner side of the moving frame is arranged on the rear side of the rotating shaft, and the plug plate is a circular plate and matched with the inner wall of the front side detection port of the three-way valve body.

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