CN112595810B - Special switching connecting device of little water purity test instrument of SF6 - Google Patents
Special switching connecting device of little water purity test instrument of SF6 Download PDFInfo
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- CN112595810B CN112595810B CN202011196591.6A CN202011196591A CN112595810B CN 112595810 B CN112595810 B CN 112595810B CN 202011196591 A CN202011196591 A CN 202011196591A CN 112595810 B CN112595810 B CN 112595810B
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- sleeve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000013094 purity test Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Abstract
The invention belongs to the technical field of SF6 micro-water purity testing instruments, and particularly relates to a special switching connecting device for an SF6 micro-water purity testing instrument, which aims at solving the problems that the existing micro-water purity testing is carried out on site, the inflation ports of circuit breakers of different switch equipment manufacturers are not consistent, and the field needs to carry out adapter matching and equipment state adjustment according to actual manufacturers, so that the efficiency is low in the micro-water purity testing process, and SF6 leakage is caused by misoperation in the testing process.
Description
Technical Field
The invention relates to the technical field of SF6 micro-water purity testing instruments, in particular to a special switching connecting device for an SF6 micro-water purity testing instrument.
Background
The SF6 gas is extremely stable in itself, and has high insulation strength and arc extinguishing capability, which is an important reason why it is widely used in high-voltage electrical applications. However, the stability and reliability of the circuit breakers and electrical equipment filled with SF6 gas are completely dependent on the purity of the SF6 gas. If the purity is deteriorated, for example, if excessive moisture, impurities, and processing debris and metal powder are mixed, the stability is deteriorated and the dielectric strength and arc extinguishing ability are also greatly lowered. In actual use, when the water content of the SF6 is over the standard, the decomposition and chemical combination reaction of the SF6 gas can generate toxic compounds, so that equipment is corroded, the mechanical performance of the switch is reduced, the on-off performance of the switch is further influenced, and the insulation of the equipment is damaged. Thus, the GB12022 specification requires a three-tenth spot check on the newly arrived cylinders, taking into account the water content and purity of the cylinders, and the GB 50150-2016 specification states that the purity check must be performed on both SF6 breakers and CTs.
Because the existing micro-water purity detection is carried out on site, the inflation inlets of the circuit breakers are not consistent according to different switch equipment manufacturers, and the test is carried out on site by matching the adapters and adjusting the equipment state according to actual manufacturers, the efficiency is low in the micro-water purity detection process, and SF6 leakage is caused by misoperation in the detection process, so that the special switching connecting device for the SF6 micro-water purity testing instrument is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a special switching connection device for an SF6 micro-water purity testing instrument.
In order to achieve the purpose, the invention adopts the following technical scheme:
the special switching connecting device for the SF6 micro-water purity testing instrument comprises a gas storage tank, wherein a gas inlet pipe is fixedly connected to the top of the gas storage tank and communicated with the top of the gas inlet pipe, a switching box is fixedly connected to one end of the gas inlet pipe, a gas inlet hole is formed in the top of the switching box, the gas inlet pipe penetrates through the gas inlet hole and extends into the sub-switching box, a pressure reducing valve is arranged on the gas inlet pipe, gas outlet holes are formed in four side faces of the switching box, switching pipes are fixedly connected to four side faces of the switching box, one end of each switching pipe is fixedly connected with a different adapter, the switching box is communicated with the switching pipes through the gas outlet holes, a ball valve switch is arranged inside each switching pipe, a switching assembly used for switching the gas outlet holes is arranged at the bottom of the gas inlet pipe, and a control assembly used for controlling whether ventilation is carried out or not is arranged at the bottom of the switching box.
Preferably, the conversion assembly comprises a first connecting box connected to the bottom of the air inlet pipe in a rotating mode, the first connecting box is communicated with the air inlet pipe, a hose is fixedly connected to one side of the first connecting box and is communicated with the air inlet pipe, a second connecting box is fixedly connected to the other end of the hose, a rubber sleeve is sleeved on the outer wall of one end of the second connecting box, a connecting pipe is fixedly connected to the inner portion of the second connecting box, and the connecting pipe is communicated with one end of the hose.
Preferably, the conversion assembly further comprises a first clamping plate fixedly connected to one end of the connecting pipe, a clamping groove is formed in the bottom of the first clamping plate, a second clamping plate is slidably connected to the inner wall of one side of the second connecting box, a clamping block matched with the clamping groove is fixedly connected to the top of the second clamping plate, and the clamping block is clamped with the clamping groove.
Preferably, the control assembly comprises four first springs which are fixedly connected to the bottom of the conversion box in a pairwise symmetrical manner, the top of each first spring is fixedly connected with a fixing block, the top of each fixing block is fixedly connected with a control panel, the bottom of each fixing block is fixedly connected with a pull rod, the bottom of each pull rod penetrates through the conversion box and is fixedly connected with a pull plate, and the first springs are sleeved on the pull rods.
Preferably, the control assembly further comprises a third spring fixedly connected to the bottom of the second clamping plate, the bottom of the third spring is fixedly connected to the inner wall of the bottom of the second connecting box, the inner walls of the two sides of the second connecting box are rotatably connected to the same rotating shaft, the outer wall of the rotating shaft is fixedly connected to a rotating plate, one end of the rotating plate is rotatably connected to one side of the second clamping plate, one end, far away from the second clamping plate, of the rotating plate is rotatably connected to a connecting block, a fourth spring is fixedly connected to the top of the connecting block, the top of the fourth spring is fixedly connected to the bottom of the connecting pipe, a through hole is formed in the bottom of the second connecting box, and the through hole is matched with the top of the control plate.
Preferably, the first connecting box is close to two second sleeves that one side fixedly connected with symmetry of second connecting box set up, the equal fixedly connected with stopper in top and the bottom of second connecting box, the telescopic one side inner wall fixedly connected with extension spring of second, the first sleeve of one end fixedly connected with of extension spring, first telescopic top and bottom respectively with telescopic top inner wall of second and bottom inner wall sliding connection, first telescopic one end run through the second sleeve and with one side fixed connection of stopper, one side fixedly connected with second spring of first connecting box, the one end of second spring and one side fixed connection of second connecting box, the second spring housing is established on the hose.
Preferably, a rotating rod is fixedly connected to the bottom of the first connection box, and the bottom of the rotating rod penetrates through the conversion box and is fixedly connected with a rotating handle.
Preferably, the top and the bottom of the first sleeve are fixedly connected with sliding blocks, the top inner wall and the bottom inner wall of the second sleeve are fixedly connected with sliding rails matched with the sliding blocks, and the sliding rails are connected with the sliding blocks in a sliding manner.
Compared with the prior art, the invention has the beneficial effects that:
1. connecting a corresponding adapter with equipment, rotating a rotating handle by hands, wherein the rotating handle drives a rotating rod to rotate, the rotating rod drives a first connecting box to rotate, the first connecting box drives a second sleeve to rotate, the second sleeve drives a first sleeve to rotate, the first sleeve drives a limiting block to rotate, and the limiting block drives a second connecting box to rotate;
2. the second connecting box can transversely move in the horizontal direction in the rotating process, the second connecting box further drives the limiting block to transversely move in the horizontal direction, the limiting block drives the first sleeve to transversely move in the horizontal direction, and the first sleeve extrudes the tension spring;
3. the bottom of the second connecting box is in contact with one side of the control panel and drives the control panel to vertically move downwards, the control panel drives the fixing block to vertically move downwards, the fixing block drives the pull rod to vertically move downwards and extrude the first spring until the second connecting box rotates to be in a horizontal position with the corresponding air outlet, the through hole is in contact with the control panel at the moment, the fixing block vertically moves upwards under the action of the elastic force of the first spring, and the fixing block drives the control panel to vertically move upwards;
4. the control plate stretches into the through hole and pushes the connecting block, the connecting block vertically moves upwards and extrudes the fourth spring, the connecting block drives the rotating plate to rotate, the rotating plate drives the second clamping plate to vertically move downwards and extrude the third spring, the third spring drives the clamping block to vertically move downwards, the clamping block and the clamping groove are disengaged, and at the moment, the connecting pipe is communicated with the adapter pipe through the air outlet;
5. the second connecting box moves to the direction that is close to the conversion box under the spring action of second spring, and first sleeve promotes first sleeve and removes to the direction that is close to the conversion box under the spring action of extension spring, and first sleeve promotes the stopper and removes to the direction that is close to the conversion box, and the stopper drives the second connecting box and removes to the direction that is close to the conversion box, and the second connecting box drives the rubber sleeve and contacts with the venthole, has increased the leakproofness of device, and it can to open corresponding ball valve switch this moment.
According to the invention, the rotating handle is rotated to finally drive the second connecting box to rotate, the second connecting box pushes the control panel to vertically move downwards, until the second connecting box is contacted with the corresponding air outlet, the control panel vertically moves upwards and finally drives the fixture block to vertically move downwards, so that the connecting pipe is communicated with the adapter pipe through the air outlet, at the moment, the rubber sleeve is tightly attached to the inner wall of the air outlet, the tightness of the device is improved, the device rotates to a proper position, and the SF6 can be circulated only by opening the corresponding ball valve switch, so that the SF6 leakage caused by misoperation is prevented.
Drawings
Fig. 1 is a schematic front view of a switching connection device specially used for an SF6 micro-water purity testing instrument according to the present invention;
fig. 2 is a schematic top view of a switching connection device specially used for an SF6 micro-water purity testing instrument according to the present invention;
FIG. 3 is a front cross-sectional structural view of the transfer box of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is an enlarged view of the portion B in FIG. 3;
FIG. 6 is a front sectional view of the first connection box of the present invention;
FIG. 7 is a front sectional view of a second connection box according to the present invention;
FIG. 8 is an enlarged view of portion C of FIG. 7;
FIG. 9 is a schematic three-dimensional cross-sectional view of a transfer box according to the present invention;
FIG. 10 is a schematic three-dimensional structure of a control panel according to the present invention;
FIG. 11 is a schematic three-dimensional view of a transfer box according to the present invention;
fig. 12 is a schematic view of a coupling structure of a first sleeve and a second sleeve in the present invention.
In the figure: 1. an adapter; 2. a transfer tube; 3. a switch box; 4. an air inlet pipe; 5. a gas storage tank; 6. an air inlet; 7. a ball valve switch; 8. an air outlet; 9. a first junction box; 10. a second connection box; 11. a rotating rod; 12. rotating the handle; 13. a control panel; 14. a fixed block; 15. a first spring; 16. a pull rod; 17. pulling a plate; 18. a second spring; 19. a hose; 20. a limiting block; 21. a first sleeve; 22. a second sleeve; 23. a connecting pipe; 24. a first card; 25. a clamping block; 26. a second clamping plate; 27. a third spring; 28. a rotating shaft; 29. rotating the plate; 30. connecting blocks; 31. a fourth spring; 32. a rubber sleeve; 33. a card slot; 34. a tension spring; 35. a slide rail; 36. a slider; 37. a through hole; 38. a pressure reducing valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-12, a special switching connecting device for an SF6 micro water purity testing instrument, including a gas storage tank 5, a gas inlet pipe 4 fixedly connected with the top of the gas storage tank 5 is communicated, one end of the gas inlet pipe 4 is fixedly connected with a conversion box 3, a gas inlet hole 6 is arranged on the top of the conversion box 3, the gas inlet pipe 4 penetrates through the gas inlet hole 6 and extends into the interior of the sub-conversion box 3, a pressure reducing valve 38 is arranged on the gas inlet pipe 4, gas outlet holes 8 are arranged on four sides of the conversion box 3, switching pipes 2 are fixedly connected with four sides of the conversion box 3, one end of each switching pipe 2 is respectively fixedly connected with different adapters 1, the conversion box 3 is communicated with the switching pipes 2 through the gas outlet holes 8, a ball valve switch 7 is arranged inside the switching pipes 2, a conversion assembly for converting the gas outlet holes 8 is arranged at the bottom of the gas inlet pipe 4, and a control assembly for controlling ventilation is arranged at the bottom of the conversion box 3.
According to the invention, the conversion assembly comprises a first connecting box 9 rotatably connected to the bottom of the air inlet pipe 4, the first connecting box 9 is communicated with the air inlet pipe 4, one side of the first connecting box 9 is fixedly connected with a communicated hose 19, the other end of the hose 19 is fixedly connected with a second connecting box 10, the outer wall of one end of the second connecting box 10 is sleeved with a rubber sleeve 32, a connecting pipe 23 is fixedly connected inside the second connecting box 10, and the connecting pipe 23 is communicated with one end of the hose 19.
In the invention, the conversion assembly further comprises a first clamping plate 24 fixedly connected to one end of the connecting pipe 23, a clamping groove 33 is formed in the bottom of the first clamping plate 24, a second clamping plate 26 is slidably connected to the inner wall of one side of the second connecting box 10, a clamping block 25 matched with the clamping groove 33 is fixedly connected to the top of the second clamping plate 26, and the clamping block 25 is clamped with the clamping groove 33.
In the invention, the control assembly comprises four first springs 15 which are connected to the bottom of the conversion box 3 in a pairwise symmetry manner, the tops of the first springs 15 are fixedly connected with fixed blocks 14, the tops of the fixed blocks 14 are fixedly connected with control plates 13, the bottoms of the fixed blocks 14 are fixedly connected with pull rods 16, the bottoms of the pull rods 16 penetrate through the conversion box 3 and are fixedly connected with pull plates 17, and the first springs 15 are sleeved on the pull rods 16.
In the invention, the control assembly further comprises a third spring 27 fixedly connected to the bottom of the second clamping plate 26, the bottom of the third spring 27 is fixedly connected with the inner wall of the bottom of the second connecting box 10, the inner walls of two sides of the second connecting box 10 are rotatably connected with the same rotating shaft 28, the outer wall of the rotating shaft 28 is fixedly connected with a rotating plate 29, one end of the rotating plate 29 is rotatably connected with one side of the second clamping plate 26, one end of the rotating plate 29, far away from the second clamping plate 26, is rotatably connected with a connecting block 30, the top of the connecting block 30 is fixedly connected with a fourth spring 31, the top of the fourth spring 31 is fixedly connected with the bottom of the connecting pipe 23, the bottom of the second connecting box 10 is provided with a through hole 37, and the through hole 37 is matched with the top of the control board 13.
According to the invention, one side of the first connecting box 9 close to the second connecting box 10 is fixedly connected with two symmetrically arranged second sleeves 22, the top and the bottom of the second connecting box 10 are both fixedly connected with limiting blocks 20, the inner wall of one side of each second sleeve 22 is fixedly connected with a tension spring 34, one end of each tension spring 34 is fixedly connected with a first sleeve 21, the top and the bottom of each first sleeve 21 are respectively in sliding connection with the inner wall of the top and the inner wall of the bottom of each second sleeve 22, one end of each first sleeve 21 penetrates through each second sleeve 22 and is fixedly connected with one side of each limiting block 20, one side of the first connecting box 9 is fixedly connected with a second spring 18, one end of each second spring 18 is fixedly connected with one side of the second connecting box 10, and each second spring 18 is sleeved on the hose 19.
In the present invention, a rotating rod 11 is fixedly connected to the bottom of the first connecting box 9, and the bottom of the rotating rod 11 penetrates through the converting box 3 and is fixedly connected with a rotating handle 12.
In the invention, the top and the bottom of the first sleeve 21 are both fixedly connected with a sliding block 36, the top inner wall and the bottom inner wall of the second sleeve 22 are both fixedly connected with a sliding rail 35 matched with the sliding block 36, and the sliding rail 35 is connected with the sliding block 36 in a sliding manner.
The working principle is as follows: when in use, the corresponding adapter 1 is connected with the equipment, the rotating handle 12 is rotated by hand, the rotating handle 12 drives the rotating rod 11 to rotate, the rotating rod 11 drives the first connecting box 9 to rotate, the first connecting box 9 drives the second sleeve 22 to rotate, the second sleeve 22 drives the first sleeve 21 to rotate, the first sleeve 21 drives the limiting block 20 to rotate, the limiting block 20 drives the second connecting box 10 to rotate, the second connecting box 10 can move transversely in the horizontal direction in the rotating process, the second connecting box 10 further drives the limiting block 20 to move transversely in the horizontal direction, the limiting block 20 drives the first sleeve 21 to move transversely in the horizontal direction, the first sleeve 21 extrudes the tension spring 34, the bottom of the second connecting box 10 is in contact with one side of the control board 13 and drives the control board 13 to move vertically downwards, the control board 13 drives the fixing block 14 to move vertically downwards, the fixing block 14 drives the pull rod 16 to move vertically downwards and extrude the first spring 15, until the second connection box 10 rotates to a horizontal position corresponding to the air outlet 8, the through hole 37 contacts the control board 13, the fixing block 14 moves vertically upwards under the action of the elastic force of the first spring 15, the fixing block 14 drives the control board 13 to move vertically upwards, the control board 13 extends into the through hole 37 and pushes the connection block 30, the connection block 30 moves vertically upwards and pushes the fourth spring 31, the connection block 30 drives the rotation plate 29 to rotate, the rotation plate 29 drives the second clamping plate 26 to move vertically downwards and push the third spring 27, the third spring 27 drives the clamping block 25 to move vertically downwards, the clamping block 25 and the clamping groove 33 are released from a clamping state, the connection pipe 23 is communicated with the adapter pipe 2 through the air outlet 8, the second connection box 10 moves towards a direction close to the conversion box 3 under the action of the elastic force of the second spring 18, and the first sleeve 21 pushes the first sleeve 21 to move towards a direction close to the conversion box 3 under the action of the elastic force of the tension spring 34 And the first sleeve 21 pushes the limiting block 20 to move towards the direction close to the conversion box 3, the limiting block 20 drives the second connecting box 10 to move towards the direction close to the conversion box 3, the second connecting box 10 drives the rubber sleeve 32 to contact with the air outlet hole 8, the sealing performance of the device is improved, and the corresponding ball valve switch 7 is opened at the moment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A special switching connecting device for an SF6 micro-water purity testing instrument comprises a gas storage tank (5) and is characterized in that the top of the gas storage tank (5) is fixedly connected with a communicated gas inlet pipe (4), one end of the gas inlet pipe (4) is fixedly connected with a switching box (3), the top of the switching box (3) is provided with a gas inlet hole (6), the gas inlet pipe (4) penetrates through the gas inlet hole (6) and extends to the inside of the switching box (3), a pressure reducing valve (38) is arranged on the gas inlet pipe (4), gas outlet holes (8) are formed in four side faces of the switching box (3), switching pipes (2) are fixedly connected to four side faces of the switching box (3), one end of each switching pipe (2) is fixedly connected with different adapters (1), the switching box (3) is communicated with the switching pipes (2) through the gas outlet holes (8), a ball valve switch (7) is arranged in the inside of the switching pipe (2), a switching component for converting the gas outlet holes (8) is arranged at the bottom of the gas inlet pipe (4), and a control component for controlling whether the switching box (3) is arranged at the bottom;
the conversion assembly comprises a first connecting box (9) rotatably connected to the bottom of the air inlet pipe (4), the first connecting box (9) is communicated with the air inlet pipe (4), one side of the first connecting box (9) is fixedly connected with a communicated hose (19), the other end of the hose (19) is fixedly connected with a second connecting box (10), the outer wall of one end of the second connecting box (10) is sleeved with a rubber sleeve (32), a connecting pipe (23) is fixedly connected inside the second connecting box (10), and the connecting pipe (23) is communicated with one end of the hose (19);
the conversion assembly further comprises a first clamping plate (24) fixedly connected to one end of the connecting pipe (23), a clamping groove (33) is formed in the bottom of the first clamping plate (24), a second clamping plate (26) is slidably connected to the inner wall of one side of the second connecting box (10), a clamping block (25) matched with the clamping groove (33) is fixedly connected to the top of the second clamping plate (26), and the clamping block (25) is clamped with the clamping groove (33);
the control assembly comprises four first springs (15) which are connected to the bottom of the conversion box (3) in a pairwise symmetry manner, the top of each first spring (15) is fixedly connected with a fixed block (14), the top of each fixed block (14) is fixedly connected with a control plate (13), the bottom of each fixed block (14) is fixedly connected with a pull rod (16), the bottom of each pull rod (16) penetrates through the conversion box (3) and is fixedly connected with a pull plate (17), and the first springs (15) are sleeved on the pull rods (16);
the control assembly further comprises a third spring (27) fixedly connected to the bottom of the second clamping plate (26), the bottom of the third spring (27) is fixedly connected with the inner wall of the bottom of the second connecting box (10), the inner walls of two sides of the second connecting box (10) are rotatably connected with the same rotating shaft (28), the outer wall of the rotating shaft (28) is fixedly connected with a rotating plate (29), one end of the rotating plate (29) is rotatably connected with one side of the second clamping plate (26), one end, far away from the second clamping plate (26), of the rotating plate (29) is rotatably connected with a connecting block (30), the top of the connecting block (30) is fixedly connected with a fourth spring (31), the top of the fourth spring (31) is fixedly connected with the bottom of the connecting pipe (23), the bottom of the second connecting box (10) is provided with a through hole (37), and the through hole (37) is matched with the top of the control panel (13);
the bottom of the first connecting box (9) is fixedly connected with a rotating rod (11), and the bottom of the rotating rod (11) penetrates through the converting box (3) and is fixedly connected with a rotating handle (12).
2. The special adapter connecting device for the SF6 micro-water purity testing instrument as claimed in claim 1, wherein the first connection box (9) is close to two second sleeves (22) symmetrically arranged and fixedly connected to one side of the second connection box (10), the top and bottom of the second connection box (10) are respectively and fixedly connected to a limiting block (20), one side of the second sleeve (22) is fixedly connected to a tension spring (34), one end of the tension spring (34) is fixedly connected to a first sleeve (21), the top and bottom of the first sleeve (21) are respectively and slidably connected to the top inner wall and the bottom inner wall of the second sleeve (22), one end of the first sleeve (21) penetrates through the second sleeve (22) and is fixedly connected to one side of the limiting block (20), one side of the first connection box (9) is fixedly connected to a second spring (18), one end of the second spring (18) is fixedly connected to one side of the second connection box (10), and the second spring (18) is sleeved on the hose (19).
3. The special switching connection device for the SF6 micro-water purity testing instrument as claimed in claim 2, wherein a sliding block (36) is fixedly connected to both the top and the bottom of the first sleeve (21), a sliding rail (35) matched with the sliding block (36) is fixedly connected to both the top inner wall and the bottom inner wall of the second sleeve (22), and the sliding rail (35) is slidably connected with the sliding block (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011196591.6A CN112595810B (en) | 2020-10-31 | 2020-10-31 | Special switching connecting device of little water purity test instrument of SF6 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011196591.6A CN112595810B (en) | 2020-10-31 | 2020-10-31 | Special switching connecting device of little water purity test instrument of SF6 |
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| Publication Number | Publication Date |
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| CN112595810A CN112595810A (en) | 2021-04-02 |
| CN112595810B true CN112595810B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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|---|---|---|---|---|
| JP2003103134A (en) * | 2001-09-28 | 2003-04-08 | Toshiba Corp | Gaseous sf 6 sampling device and method for the same |
| CN201637734U (en) * | 2010-03-26 | 2010-11-17 | 河南省电力公司驻马店供电公司 | Universal adapter for micro-water measuring instrument of gas switch |
| CN104315286A (en) * | 2014-10-17 | 2015-01-28 | 国网辽宁省电力有限公司检修分公司 | Special tee for test of sulfur hexafluoride gas and use method of tee |
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| CN112595810A (en) | 2021-04-02 |
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