CN109470819B - SF6 gas detection and analysis six-way device - Google Patents
SF6 gas detection and analysis six-way device Download PDFInfo
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- CN109470819B CN109470819B CN201810949501.2A CN201810949501A CN109470819B CN 109470819 B CN109470819 B CN 109470819B CN 201810949501 A CN201810949501 A CN 201810949501A CN 109470819 B CN109470819 B CN 109470819B
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims description 31
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 description 9
- 210000003437 trachea Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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- 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0022—General constructional details of gas analysers, e.g. portable test equipment using a number of analysing channels
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- 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
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Abstract
The invention discloses an SF6 gas detection and analysis six-way device, which comprises six vent pipes, a middle vent pipe, a first communicating port and a second communicating port; one end of each of the first vent pipe, the third vent pipe and the fifth vent pipe is communicated with the first communicating port; one end of the middle vent pipe is communicated with the first communicating port, and the other end of the middle vent pipe is communicated with the second communicating port; one end of each of the second vent pipe, the fourth vent pipe and the sixth vent pipe is communicated with the second communicating port; the middle vent pipe, the first vent pipe, the second vent pipe, the third vent pipe, the fourth vent pipe, the fifth vent pipe and the sixth vent pipe are respectively provided with a flow valve; the gas transmission ports of the six vent pipes are respectively provided with a gas pipe joint. The invention provides an SF6 gas detection and analysis six-way device, which mainly solves the problems of long time consumption and gas waste when gas needs to be subjected to various different detection and analysis, and can realize the functions of single-in multiple-out, multiple-in multiple-out or multiple-in single-out.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to an SF6 gas detection and analysis six-way device.
Background
SF6 is widely used as an insulating gas in grid equipment, especially SF6 circuit breakers and GIS. SF6 gas detection is an important test item of inflation equipment such as an SF6 circuit breaker, a GIS and the like, and comprises the humidity, purity and decomposition product tests of SF6, so that whether discharge reaction occurs in the inflation equipment or not can be reflected, and the discharge fault of the equipment caused by the increase of micro-water content can be prevented. However, in the SF6 test, due to the reasons of detection equipment, detection principle and the like, the test time of a single air chamber is long, and because there are many GIS air chambers, the SF6 gas test of the whole substation needs to consume a large amount of time.
The traditional SF6 gas detection method is to introduce SF6 gas into detection equipment from a GIS gas chamber or a SF6 breaker through a gas transmission pipeline for detection. The detection equipment is divided into micro-water detection equipment, decomposition product detection equipment and purity detection equipment. The traditional detection method has the following defects: (1) the consumed detection time is long; (2) when the trace water or the decomposition product or the purity of the gas needs to be detected simultaneously, only the instrument can be replaced, which not only consumes time, but also wastes gas.
Chinese patent application publication No. CN202008479U, the open date is 2011 10 months 12 days, the name is "a coal mine gas analyzer's gas switching device", disclose the utility model relates to a coal mine gas analyzer's gas switching device sets up program control's gas distribution board in the front portion of gas measurement appearance, and gas such as the colliery is gathered in the pit, CO2, H2, O2, N2 is unified to be carried out solenoid valve control, reposition of redundant personnel sample by the distributing board, then carries for gas measurement appearance to analyze, reaches the purpose of accuracy, rapid survey conflagration gas. However, the air inlet and the air outlet correspond to each other one by one, and only different air delivery pipes are opened as required, so that the above problems cannot be realized, and especially the functional requirements of single-inlet multiple-outlet, multiple-inlet multiple-outlet or multiple-inlet single-outlet cannot be realized.
Disclosure of Invention
The invention provides an SF6 gas detection and analysis six-way device for overcoming the defects in the prior art, mainly solving the problems of long time consumption and gas waste when gas needs to be subjected to various different detection and analysis, and realizing the functions of single-in multiple-out, multiple-in multiple-out or multiple-in single-out.
In order to achieve the purpose, the invention adopts the following technical scheme:
an SF6 gas detection and analysis six-way device comprises a first vent pipe, a second vent pipe, a third vent pipe, a fourth vent pipe, a fifth vent pipe, a sixth vent pipe, a middle vent pipe, a first communicating port and a second communicating port; one end of the first vent pipe is communicated with the first communicating port, and the other end of the first vent pipe is provided with a first gas transmission port; one end of the third air through pipe is communicated with the first communicating port, and the other end of the third air through pipe is provided with a third air conveying port; one end of the fifth vent pipe is communicated with the first communicating port, and the other end of the fifth vent pipe is provided with a fifth gas transmission port; one end of the middle vent pipe is communicated with the first communicating port, and the other end of the middle vent pipe is communicated with the second communicating port; one end of the second vent pipe is communicated with the second communicating port, and the other end of the second vent pipe is provided with a second gas transmission port; one end of the fourth air pipe is communicated with the second communicating port, and the other end of the fourth air pipe is provided with a fourth air transmission port; one end of the sixth vent pipe is communicated with the second communicating port, and the other end of the sixth vent pipe is provided with a sixth gas transmission port; a seventh flow valve is arranged on the middle vent pipe, a first flow valve is arranged on the first vent pipe, a second flow valve is arranged on the second vent pipe, a third flow valve is arranged on the third vent pipe, a fourth flow valve is arranged on the fourth vent pipe, a fifth flow valve is arranged on the fifth vent pipe, and a sixth flow valve is arranged on the sixth vent pipe; the first gas transmission port is provided with a gas pipe connector, the second gas transmission port is provided with a gas pipe connector, the third gas transmission port is provided with a gas pipe connector, the fourth gas transmission port is provided with a gas pipe connector, the fifth gas transmission port is provided with a gas pipe connector, and the sixth gas transmission port is provided with a gas pipe connector. By implementing the technical scheme, the functional requirements of single-input multiple-output, multiple-input multiple-output or multiple-input single-output of the device can be met. When one air pipe joint is connected with an air inlet pipe, and the other air pipe joints are connected with an air outlet pipe, single-inlet and multiple-outlet can be realized, and 1-5 air outlets can be selected according to requirements; when one of the air pipe joints is connected with the air outlet pipe, and other air pipe joints are connected with the air inlet pipe, multiple inlets and single outlets can be realized, and 1-5 air inlets can be selected according to requirements. When the seventh flow valve is closed, the first vent pipe, the third vent pipe and the fifth vent pipe can be independently used, and similarly, the second vent pipe, the fourth vent pipe and the sixth vent pipe can be independently used, and the six-way is split into two tee pipes for use; when multiple admit air needs intensive mixing, regard first breather pipe, third breather pipe and fifth logical gas as the intake pipe, regard second breather pipe, fourth breather pipe and sixth logical gas as the outlet duct, admit air and pass through middle breather pipe jointly, the seventh flow valve has the vortex effect, can make the gas composition mix, gets into the mutual opening of second after the intensive mixing, then selects gas outlet quantity according to actual need. Each flow valve can control the gas transmission flow of each gas transmission port and adjust according to actual needs.
Preferably, a first pressure gauge is arranged on the first vent pipe and arranged between the first flow valve and the first gas transmission port; and a second pressure gauge is arranged on the second vent pipe and is arranged between the second flow valve and the second gas transmission port. Through implementing above-mentioned technical scheme, can observe the atmospheric pressure of first gas transmission mouth and second gas transmission mouth, adjust the atmospheric pressure of admitting air as required. Although this scheme only sets up the manometer on first breather pipe and second breather pipe, actually can also set up the manometer on other breather pipes as required.
Preferably, the air pipe joint further comprises a base, an inner support shaft, a locking ring and a compression spring, wherein the base is fixed with the inner support shaft, and the locking ring is sleeved on the inner support shaft and is in sliding connection with the inner support shaft; the inner support shaft comprises a sliding section and a locking section, the compression spring is sleeved on the sliding section, one end of the compression spring sleeve is connected with the base, and the other end of the compression spring sleeve is connected with the locking ring; the locking section is provided with a plurality of circular truncated cone through holes, the circular truncated cone through holes are uniformly distributed along the circumferential direction of the axis of the inner support shaft, and the small hole ends of the circular truncated cone through holes face the axis of the inner support shaft; the round platform through hole is provided with a ball; the pore diameter of the small hole of the circular truncated cone through hole is smaller than the diameter of the ball, and the pore diameter of the large hole of the circular truncated cone through hole is larger than the diameter of the ball; the inner wall of the locking ring comprises a sliding inner wall, a locking inner wall, a transition inclined plane and an unlocking inner wall which are sequentially connected, a first through hole is formed in the base, a second through hole is formed in the inner support shaft, and the first through hole is communicated with the second through hole. Through implementing above-mentioned technical scheme, can realize the tracheal quick assembly disassembly of hardness is great. Moving the locking ring to compress the compression spring, wherein the locking ring is close to the base, and the ball can move towards the large hole of the circular truncated cone through hole; at the moment, the air pipe is inserted into the second through hole of the inner support shaft, the locking ring is loosened, the locking ring is far away from the base under the action of the compression spring, the ball is tightly pressed by the locking inner wall, the ball is fixed in the through hole of the circular truncated cone, and one end of the ball tightly presses the air pipe to fix the air pipe. When the air pipe needs to be disassembled, the locking ring only needs to be pushed to be close to the base, so that the ball can move towards the direction of the large hole of the circular truncated cone through hole and can be pulled out.
Preferably, the air pipe joint is provided with a connecting pipe, a third through hole is arranged in the connecting pipe, one end of the third through hole is communicated with the first through hole, and the other end of the third through hole is communicated with the second through hole. Through implementing above-mentioned technical scheme, can realize the tracheal quick assembly disassembly that hardness is less, combine with above-mentioned technical scheme, can realize the function of adaptation hose and hard tube simultaneously. The air pipe with lower hardness can be sleeved on the connecting pipe, and the air pipe has certain elasticity and can clamp the connecting pipe.
Preferably, the outer wall of the connecting pipe is provided with at least one connecting convex ring. The existence of the connecting convex ring can increase the pressure at the contact part of the connecting convex ring and the air pipe, thereby increasing the reliability of the connection between the air pipe and the connecting pipe. Meanwhile, the air pipe has certain elasticity and can be tightly attached to the connecting convex ring, so that the air tightness of the air pipe during connection can be improved.
Preferably, the connecting pipe comprises a circular truncated cone section and a connecting section, the connecting section is in threaded connection with the base, and a large opening end of the circular truncated cone section is connected with the connecting section. By implementing the technical scheme, the connecting pipe and the base can be quickly installed, and the connecting pipe can be replaced as required; the circular table section can be matched with hoses with different sizes in a certain range, and the range of usable air pipes is increased.
Preferably, the outer wall of the circular truncated cone section is provided with a plurality of connecting convex rings, and the plurality of connecting convex rings are sequentially distributed from the small opening end to the large opening end of the circular truncated cone section. The structure can ensure that at least one connecting convex ring can work normally all the time when the connecting pipe is connected with hoses with different sizes, thereby achieving the purpose of increasing the connection reliability and the air tightness.
Preferably, the inner support shaft is provided with a sealing ring groove, the sealing ring groove is arranged between the sliding section and the locking section, a first sealing ring is arranged in the sealing ring groove, the inner wall of the first sealing ring is in contact with the outer wall of the inner support shaft, and the outer wall of the first sealing ring is in contact with the inner wall of the locking ring. Through implementing above-mentioned technical scheme, can increase the gas tightness between inner support axle and the locking ring.
Preferably, the locking section of the inner support shaft is provided with an inner retaining ring, and the sliding inner wall of the sealing ring is provided with an outer retaining ring. The structure can limit the displacement of the locking ring.
Preferably, two clamp spring grooves are formed in the inner wall of the inner support shaft, elastic check rings are arranged in the clamp spring grooves, and a second sealing ring is arranged between the two clamp spring grooves; and two ends of the second sealing ring are respectively contacted with the two elastic check rings, and the outer wall of the second sealing ring is contacted with the inner wall of the inner support shaft. Through implementing above-mentioned technical scheme, can be when hard tube and air pipe joint are connected, with the clearance seal between trachea and the inner support axle to further increase airtight effect. And the structure is convenient for replacing the sealing ring.
The invention has the beneficial effects that: (1) a plurality of air pipes can be communicated simultaneously, and the number of the air inlet pipes and the number of the air outlet pipes can be selected according to requirements, so that the functional requirements of single-inlet multiple-outlet, multiple-inlet multiple-outlet or multiple-inlet single-outlet are met; (2) the gas can be discharged after being mixed according to various types of gas entering, and at most three gas outlets can be simultaneously selected; (3) can be adapted to two air pipes with higher hardness and lower hardness; (4) the hose can be adapted to hoses with different sizes; (5) the reliability is high when being connected with the trachea, and the gas tightness is good, and can quick assembly disassembly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the air receiving tube of the present invention.
In the figure: the first ventilation pipe 1, the first gas transmission port 1.2, the second ventilation pipe 2, the second gas transmission port 2.1, the third ventilation pipe 3, the third gas transmission port 3.1, the fourth ventilation pipe 4, the fourth gas transmission port 4.1, the fifth ventilation pipe 5, the fifth gas transmission port 5.1, the sixth ventilation pipe 6, the sixth gas transmission port 6.1, the middle ventilation pipe 7, the first intercommunication port 8, the second intercommunication port 9, the gas pipe joint 10, the base 10.1, the first through hole 10.1.1, the inner bracket shaft 10.2, the sliding section 10.2.1, the locking section 10.2.2, the circular table through hole 10.2.3, the second through hole 10.2.4, the sealing ring groove 10.2.5, the inner baffle ring 10.2.6, the clamp spring groove 10.2.7, the locking ring 10.3, the sliding inner wall 10.3.1, the locking inner wall 10.3.2, the outer baffle ring 10.3.3, the transition slope 10.3.4, the unlocking inner wall 10.3.5, the compression spring 10.4, the ball 10.5, the connecting pipe 10.6, the first tee hole 10.6, the connecting ring 10.1, the first connecting convex ring 10.2, the first connecting ring 10.9, the first elastic baffle ring 368, the first baffle ring 368, the second through hole 368, the third through hole 6.1, the sixth gas, The flow control valve comprises a second flow valve 12, a third flow valve 13, a fourth flow valve 14, a fifth flow valve 15, a sixth flow valve 16, a sixth flow valve 17, a first pressure gauge 18 and a second pressure gauge 19.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
as shown in fig. 1 and 2, an SF6 gas detection and analysis six-way device includes a first vent pipe 1, a second vent pipe 2, a third vent pipe 3, a fourth vent pipe 4, a fifth vent pipe 5, a sixth vent pipe 6, an intermediate vent pipe 7, a first communicating port 8, and a second communicating port 9; one end of the first vent pipe 1 is communicated with the first communicating port 8, and the other end of the first vent pipe is provided with a first gas transmission port 1.2; one end of the third air delivery pipe 3 is communicated with the first communicating port 8, and the other end is provided with a third air delivery port 3.1; one end of the fifth ventilation pipe 5 is communicated with the first mutual ventilation port 8, and the other end is provided with a fifth gas transmission port 5.1; one end of the middle vent pipe 7 is communicated with the first communicating port 8, and the other end is communicated with the second communicating port 9; one end of the second vent pipe 2 is communicated with the second communicating port 9, and the other end is provided with a second gas transmission port 2.1; one end of the fourth vent pipe 4 is communicated with the second communicating port 9, and the other end is provided with a fourth gas transmission port 4.1; one end of the sixth vent pipe 6 is communicated with the second communicating port 9, and the other end is provided with a sixth gas transmission port 6.1; a seventh flow valve 17 is arranged on the middle vent pipe 7, a first flow valve 11 is arranged on the first vent pipe 1, a second flow valve 12 is arranged on the second vent pipe 2, a third flow valve 13 is arranged on the third vent pipe 3, a fourth flow valve 14 is arranged on the fourth vent pipe 4, a fifth flow valve 15 is arranged on the fifth vent pipe 5, and a sixth flow valve 16 is arranged on the sixth vent pipe 6; the first gas transmission port 1.2 is provided with a gas pipe connector 10, the second gas transmission port 2.1 is provided with a gas pipe connector 10, the third gas transmission port 3.1 is provided with a gas pipe connector 10, the fourth gas transmission port 4.1 is provided with a gas pipe connector 10, the fifth gas transmission port 5.1 is provided with a gas pipe connector 10, and the sixth gas transmission port 6.1 is provided with a gas pipe connector 10. By implementing the technical scheme, the functional requirements of single-input multiple-output, multiple-input multiple-output or multiple-input single-output of the device can be met. When one air pipe joint 10 is connected with an air inlet pipe, and the other air pipe joints are connected with air outlet pipes, single inlet and multiple outlets can be realized, and 1-5 air outlets can be selected according to requirements; when one of the air pipe joints 10 is connected with an air outlet pipe, and other air pipe joints 10 are connected with an air inlet pipe, multiple inlets and single outlets can be realized, and 1-5 air inlets can be selected according to requirements. When the seventh flow valve 17 is closed, the first vent pipe 1, the third vent pipe 3 and the fifth vent pipe 5 can be used independently, and similarly, the second vent pipe 2, the fourth vent pipe 4 and the sixth vent pipe 6 can be used independently, and the six-way is split into two three-way parts for use; when multiple admit air needs intensive mixing, regard first breather pipe 1, third breather pipe 3 and fifth logical gas as the intake pipe, regard second breather pipe 2, fourth breather pipe 4 and sixth logical gas as the outlet duct, admit air and pass through middle breather pipe 7 jointly, seventh flow valve 17 has the vortex effect, can make the gas composition mix, gets into second intercommunication mouth 9 after the intensive mixing, then selects gas outlet quantity according to actual need. Each flow valve can control the gas transmission flow of each gas transmission port and adjust according to actual needs.
A first pressure gauge 18 is arranged on the first vent pipe 1, and the first pressure gauge 18 is arranged between the first flow valve 11 and the first gas transmission port 1.2; a second pressure gauge 19 is arranged on the second vent pipe 2, and the second pressure gauge 19 is arranged between the second flow valve 12 and the second gas transmission port 2.1. Through implementing above-mentioned technical scheme, can observe the atmospheric pressure of first gas transmission mouth 1.2 and second gas transmission mouth 2.1, adjust the atmospheric pressure of admitting air as required. Although this scheme only sets up the manometer on first breather pipe 1 and second breather pipe 2, can also set up the manometer on other breather pipes as required in reality.
The air pipe joint 10 further comprises a base 10.1, an inner support shaft 10.2, a locking ring 10.3 and a compression spring 10.4, wherein the base 10.1 is fixed with the inner support shaft 10.2, and the locking ring 10.3 is sleeved on the inner support shaft 10.2 and is in sliding connection with the inner support shaft 10.2; the inner support shaft 10.2 comprises a sliding section 10.2.1 and a locking section 10.2.2, the compression spring 10.4 is sleeved on the sliding section 10.2.1, one end of the compression spring 10.4 is connected with the base 10.1, and the other end of the compression spring 10.4 is connected with the locking ring 10.3; a plurality of circular truncated cone through holes 10.2.3 are formed in the locking section 10.2.2, the circular truncated cone through holes 10.2.3 are uniformly distributed along the circumferential direction of the axis of the inner support shaft 10.2, and the small hole end of the circular truncated cone through hole 10.2.3 faces the axis of the inner support shaft 10.2; the round platform through hole 10.2.3 is provided with a ball 10.5; the pore diameter of the small hole 10.2.3 of the circular truncated cone through hole is smaller than the diameter of the ball by 10.5, and the pore diameter of the large hole 10.2.3 of the circular truncated cone through hole is larger than the diameter of the ball by 10.5; the inner wall of the locking ring 10.3 comprises a sliding inner wall 10.3.1, a locking inner wall 10.3.2, a transition inclined surface 10.3.4 and an unlocking inner wall 10.3.5 which are connected in sequence, a first through hole 10.1.1 is arranged on the base 10.1, a second through hole 10.2.4 is arranged on the inner support shaft 10.2, and the first through hole 10.1.1 is communicated with the second through hole 10.2.4. Through implementing above-mentioned technical scheme, can realize the tracheal quick assembly disassembly of hardness is great. The locking ring 10.3 is moved to compress the compression spring 10.4, the locking ring 10.3 is close to the base 10.1, and the ball 10.5 can move towards the large hole direction of the circular truncated cone through hole 10.2.3; at this time, the air tube is inserted into the second through hole 10.2.4 of the inner support shaft 10.2, the locking ring 10.3 is loosened, the locking ring 10.3 is far away from the base 10.1 under the action of the compression spring 10.4, the locking inner wall 10.3.2 presses the ball 10.5, the ball 10.5 is fixed on the truncated cone through hole 10.2.3, one end of the ball 10.5 presses the air tube, and the air tube is fixed. When the air pipe needs to be disassembled, only the locking ring 10.3 needs to be pushed to be close to the base 10.1, so that the ball 10.5 can move towards the large hole direction of the circular truncated cone through hole 10.2.3 and can be pulled out.
The air pipe joint 10 is provided with a connecting pipe 10.6, a third through hole 10.6.1 is arranged in the connecting pipe 10.6, one end of the third through hole 10.6.1 is communicated with the first through hole 10.1.1, and the other end of the third through hole is communicated with the second through hole 10.2.4. Through implementing above-mentioned technical scheme, can realize the tracheal quick assembly disassembly that hardness is less, combine with above-mentioned technical scheme, can realize the function of adaptation hose and hard tube simultaneously. The air pipe with lower hardness can be sleeved on the connecting pipe 10.6, and the air pipe has certain elasticity and can clamp the connecting pipe 10.6.
The outer wall of the connecting pipe 10.6 is provided with at least one connecting convex ring 10.6.2. The existence of the connecting convex ring 10.6.2 can increase the pressure at the contact part of the connecting convex ring 10.6.2 and the air pipe, thereby increasing the reliability of the connection of the air pipe and the connecting pipe 10.6. Meanwhile, the air pipe has certain elasticity and can be tightly attached to the connecting convex ring 10.6.2, so that the air tightness of the air pipe during connection can be improved.
The connecting pipe 10.6 comprises a round table section 10.6.3 and a connecting section 10.6.4, the connecting section 10.6.4 is connected with the base 10.1 through threads, and a large opening end of the round table section 10.6.3 is connected with the connecting section 10.6.4. By implementing the technical scheme, the connecting pipe 10.6 and the base 10.1 can be quickly installed, and the connecting pipe 10.6 is replaced as required; the circular truncated cone section 10.6.3 can adapt to the hose of equidimension not in certain extent, increases the scope of usable trachea.
The outer wall of the circular truncated cone section 10.6.3 is provided with a plurality of connecting convex rings 10.6.2, and the connecting convex rings 10.6.2 are distributed in sequence from the small opening end to the large opening end of the circular truncated cone section 10.6.3. The structure can ensure that at least one connecting convex ring 10.6.2 can normally work all the time when the connecting pipe 10.6 is connected with hoses with different sizes, and the purpose of improving the connection reliability and the air tightness is realized.
The inner support shaft 10.2 is provided with a sealing ring groove 10.2.5, the sealing ring groove 10.2.5 is arranged between the sliding section 10.2.1 and the locking section 10.2.2, a first sealing ring 10.7 is arranged in the sealing ring groove 10.2.5, the inner wall of the first sealing ring 10.7 is contacted with the outer wall of the inner support shaft 10.2, and the outer wall of the first sealing ring 10.7 is contacted with the inner wall of the locking ring 10.3. By implementing the above technical solution, the air tightness between the inner support shaft 10.2 and the locking ring 10.3 can be increased.
An inner retaining ring 10.2.6 is arranged on the locking section 10.2.2 of the inner support shaft 10.2, and an outer retaining ring 10.3.3 is arranged on the sliding inner wall 10.3.1 of the sealing ring. Said structure makes it possible to limit the displacement of the locking ring 10.3.
Two clamp spring grooves 10.2.7 are formed in the inner wall of the inner support shaft 10.2, an elastic check ring 10.8 is arranged in the clamp spring groove 10.2.7, and a second sealing ring 10.9 is arranged between the two clamp spring grooves 10.2.7; two ends of the second sealing ring 10.9 are respectively contacted with the two elastic retainer rings 10.8, and the outer wall of the second sealing ring is contacted with the inner wall of the inner support shaft 10.2. Through implementing above-mentioned technical scheme, can be when hard tube is connected with trachea joint 10, with the clearance seal between trachea and inner support axle 10.2 to further increase airtight effect. And the structure is convenient for replacing the sealing ring.
The invention has the beneficial effects that: a plurality of air pipes can be communicated simultaneously, and the number of the air inlet pipes and the number of the air outlet pipes can be selected according to requirements, so that the functional requirements of single-inlet multiple-outlet, multiple-inlet multiple-outlet or multiple-inlet single-outlet are met; the gas can be discharged after being mixed according to various types of gas entering, and at most three gas outlets can be simultaneously selected; can be adapted to two air pipes with higher hardness and lower hardness; the hose can be adapted to hoses with different sizes; the reliability is high when being connected with the trachea, and the gas tightness is good, and can quick assembly disassembly.
Claims (8)
1. An SF6 gas detection and analysis six-way device is characterized by comprising a first vent pipe, a second vent pipe, a third vent pipe, a fourth vent pipe, a fifth vent pipe, a sixth vent pipe, a middle vent pipe, a first communicating port and a second communicating port; one end of the first vent pipe is communicated with the first communicating port, and the other end of the first vent pipe is provided with a first gas transmission port; one end of the third air through pipe is communicated with the first communicating port, and the other end of the third air through pipe is provided with a third air conveying port; one end of the fifth vent pipe is communicated with the first communicating port, and the other end of the fifth vent pipe is provided with a fifth gas transmission port; one end of the middle vent pipe is communicated with the first communicating port, and the other end of the middle vent pipe is communicated with the second communicating port; one end of the second vent pipe is communicated with the second communicating port, and the other end of the second vent pipe is provided with a second gas transmission port; one end of the fourth air pipe is communicated with the second communicating port, and the other end of the fourth air pipe is provided with a fourth air transmission port; one end of the sixth vent pipe is communicated with the second communicating port, and the other end of the sixth vent pipe is provided with a sixth gas transmission port; a seventh flow valve is arranged on the middle vent pipe, a first flow valve is arranged on the first vent pipe, a second flow valve is arranged on the second vent pipe, a third flow valve is arranged on the third vent pipe, a fourth flow valve is arranged on the fourth vent pipe, a fifth flow valve is arranged on the fifth vent pipe, and a sixth flow valve is arranged on the sixth vent pipe; the first gas transmission port is provided with a gas pipe connector, the second gas transmission port is provided with a gas pipe connector, the third gas transmission port is provided with a gas pipe connector, the fourth gas transmission port is provided with a gas pipe connector, the fifth gas transmission port is provided with a gas pipe connector, and the sixth gas transmission port is provided with a gas pipe connector; the air pipe joint further comprises a base, an inner support shaft, a locking ring and a compression spring, wherein the base is fixed with the inner support shaft, and the locking ring is sleeved on the inner support shaft and is in sliding connection with the inner support shaft; the inner support shaft comprises a sliding section and a locking section, the compression spring is sleeved on the sliding section, one end of the compression spring is connected with the base, and the other end of the compression spring is connected with the locking ring; the locking section is provided with a plurality of circular truncated cone through holes, the circular truncated cone through holes are uniformly distributed along the circumferential direction of the axis of the inner support shaft, and the small hole ends of the circular truncated cone through holes face the axis of the inner support shaft; the round platform through hole is provided with a ball; the pore diameter of the small hole of the circular truncated cone through hole is smaller than the diameter of the ball, and the pore diameter of the large hole of the circular truncated cone through hole is larger than the diameter of the ball; the inner wall of the locking ring comprises a sliding inner wall, a locking inner wall, a transition inclined plane and an unlocking inner wall which are sequentially connected, a first through hole is formed in the base, a second through hole is formed in the inner support shaft, and the first through hole is communicated with the second through hole; the air pipe joint is provided with a connecting pipe, a third through hole is arranged in the connecting pipe, one end of the third through hole is communicated with the first through hole, and the other end of the third through hole is communicated with the second through hole.
2. The SF6 gas detection and analysis six-way device of claim 1, wherein a first pressure gauge is provided on the first vent pipe, the first pressure gauge being disposed between the first flow valve and the first gas transfer port; and a second pressure gauge is arranged on the second vent pipe and is arranged between the second flow valve and the second gas transmission port.
3. The SF6 gas detection and analysis six-way device of claim 1, wherein the connection tube has at least one connection protrusion ring on its outer wall.
4. The SF6 gas detection and analysis six-way device of claim 1, 2 or 3, wherein the connection tube comprises a circular truncated cone section and a connection section, the connection section is in threaded connection with the base, and a large opening end of the circular truncated cone section is connected with the connection section.
5. The SF6 gas detection and analysis six-way device as claimed in claim 4, wherein a plurality of connecting collars are disposed on the outer wall of the circular truncated cone section, and are sequentially distributed from the small opening end to the large opening end of the circular truncated cone section.
6. The SF6 gas detection and analysis six-way device as claimed in claim 1, 2 or 3, wherein the inner support shaft is provided with a sealing ring groove, the sealing ring groove is arranged between the sliding section and the locking section, a first sealing ring is arranged in the sealing ring groove, the inner wall of the first sealing ring is in contact with the outer wall of the inner support shaft, and the outer wall of the first sealing ring is in contact with the inner wall of the locking ring.
7. The SF6 gas detection and analysis six-way device as claimed in claim 1, 2 or 3, wherein an inner stop ring is provided on the locking portion of the inner support shaft and an outer stop ring is provided on the sliding inner wall of the locking ring.
8. The SF6 gas detection and analysis six-way device as claimed in claim 1, 2 or 3, wherein two clamp spring grooves are provided on the inner wall of the inner support shaft, a circlip is provided in the clamp spring groove, and a second seal ring is provided between the two clamp spring grooves; and two ends of the second sealing ring are respectively contacted with the two elastic check rings, and the outer wall of the second sealing ring is contacted with the inner wall of the inner support shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949501.2A CN109470819B (en) | 2018-08-20 | 2018-08-20 | SF6 gas detection and analysis six-way device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949501.2A CN109470819B (en) | 2018-08-20 | 2018-08-20 | SF6 gas detection and analysis six-way device |
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| CN109470819A CN109470819A (en) | 2019-03-15 |
| CN109470819B true CN109470819B (en) | 2021-06-08 |
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|---|---|
| CN109470819A (en) | 2019-03-15 |
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