CN116181956B - Quick ball valve device of changing under pressure - Google Patents
Quick ball valve device of changing under pressure Download PDFInfo
- Publication number
- CN116181956B CN116181956B CN202310111174.4A CN202310111174A CN116181956B CN 116181956 B CN116181956 B CN 116181956B CN 202310111174 A CN202310111174 A CN 202310111174A CN 116181956 B CN116181956 B CN 116181956B
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- China
- Prior art keywords
- ball valve
- main shaft
- quarter
- sleeve
- conical block
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 53
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000741 silica gel Substances 0.000 claims abstract description 28
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 28
- 230000008859 change Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000006837 decompression Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241001520299 Phascolarctos cinereus Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
- F16K43/001—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose an auxiliary valve being actuated independently of the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
Abstract
The invention relates to the technical field of valves, in particular to a rapid under-pressure ball valve replacement device, which comprises a ball valve body, an air outlet pipe connected with the ball valve body, a main shaft and a conical block, wherein the conical block is arranged at the end part of the main shaft; the shaft sleeve is sleeved on the main shaft, and one end of the shaft sleeve, which is close to the conical block, is connected with a silica gel plugging sleeve; the sealing tube is used for sealing connection of the quarter tee joint and the silica gel plug sleeve, and one end of the quarter tee joint, which is far away from the sealing tube, is connected with a quarter inscription for connecting the ball valve body; the decompression cock is arranged on the quarter tee joint. This scheme utilizes the quarter tee bend to be connected with the pneumatic valve, and inside gas is blocked by the pressure release cock when the ball valve is opened, and the cooperation between reuse main shaft and the axle sleeve blocks up the outlet duct, later carries out the dismantlement of ball valve again, is blocked up all the time at dismantlement in-process outlet duct, accomplishes the area and presses the change, and is safer, and does not set up extra part on the outlet duct, has practiced thrift the cost of changing.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a device for quickly replacing a ball valve under pressure.
Background
The gas pipeline is generally buried underground, and a plurality of ball valves are arranged on the gas pipeline, so that after the gas pipeline is used for a long time, the ball valves can leak air due to cracking and ageing, and the gas pipeline needs to be maintained and replaced regularly.
In the prior art, when the ball valve is replaced, in order to prevent the gas leakage, a maintenance department can select the gas stopping operation, and the normal gas use of a user can be influenced. In the prior art, a mode of replacing the ball valve with pressure is also provided, namely the ball valve is firstly separated from the air inlet pipe, then the ball valve is opened, a long rod is rapidly utilized to penetrate through the ball valve, and an air outlet pipe connected with the ball valve is blocked, but the operation is high in danger, and the long rod with a large air flow is not easy to insert into the air outlet pipe; the other is to preset an opening on the air outlet pipe, when the ball valve needs to be replaced, an obstruction is added into the air outlet pipe through the opening so as to achieve the purpose of replacing under pressure, but the air outlet pipe needs to be pretreated, and the maintenance cost is increased.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a rapid ball valve replacing device with pressure, which can effectively solve the problems of inconvenient ball valve replacing with pressure, higher cost and lower safety in the prior art.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a device for quickly replacing a ball valve under pressure, which comprises a ball valve body, an air outlet pipe connected with the ball valve body, a main shaft, a conical block and a conical block, wherein the conical block is arranged at the end part of the main shaft; the shaft sleeve is sleeved on the main shaft, one end, close to the conical block, of the shaft sleeve is connected with a silica gel plug sleeve, a pushing assembly for pushing the shaft sleeve to move is arranged on the main shaft, and the silica gel plug sleeve is sleeved on the conical block by moving the silica gel plug sleeve; the four-way tee joint is sleeved on the shaft sleeve, one end of the four-way tee joint, which is far away from the ball valve body, is connected with a sealing pipe, the sealing pipe is used for sealing connection of the four-way tee joint and the silica gel plugging sleeve, and one end of the four-way tee joint, which is far away from the sealing pipe, is connected with a four-way inscription for connecting the ball valve body; the pressure relief cock is arranged on the quarter tee and is used for relieving the pressure in the sealing pipe and the quarter tee.
Further, a first sealing ring is fixedly sleeved on the outer wall of the main shaft, the sealing pipe is in threaded connection with the quarter tee joint, and a second sealing ring is arranged on the inner wall of the sealing pipe.
Further, the pushing assembly comprises an external thread arranged outside the main shaft, a travel thread pipe is arranged on the main shaft in a threaded mode, a limit nut is arranged on the main shaft in a threaded mode, and the travel thread pipe is located between the silica gel plugging sleeve and the limit nut.
Further, the conical block is far away from the main shaft one end fixed mounting and has been seted up the mounting groove, be equipped with first piston disc in the mounting groove, set up a plurality of first connecting holes that are linked together with the mounting groove on the outer wall of conical block, and a plurality of first connecting holes are cyclic annular distribution, and a plurality of first connecting holes are connected with sealed gasbag jointly.
Further, the second connecting holes communicated with the mounting groove are formed in the outer wall of the conical block in an equidistant mode, the second connecting holes are distributed in an annular mode, a second piston disc is arranged in each second connecting hole, and a locating rod is arranged on one side, away from the mounting groove, of the second piston disc.
Further, the through hole that is linked together with the mounting groove is offered to the main shaft one end that keeps away from the toper piece, the through hole is kept away from mounting groove one end activity and is inserted and be equipped with the piston rod, piston rod one end is equipped with the limiting plate, be equipped with spacing subassembly between limiting plate and the main shaft.
Further, a fixing frame is fixedly arranged in the mounting groove, and a reset spring is arranged between the fixing frame and the first piston disc.
Further, the limiting comprises a limiting block fixedly mounted on the limiting plate, and a limiting groove matched with the limiting block is formed in the end portion of the main shaft.
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
this scheme utilizes the quarter tee bend to be connected with the pneumatic valve, and inside gas is blocked by the pressure release cock when the ball valve is opened, and the cooperation between reuse main shaft and the axle sleeve blocks up the outlet duct, later carries out the dismantlement of ball valve again, is blocked up all the time at dismantlement in-process outlet duct, accomplishes the area and presses the change, and is safer, and does not set up extra part on the outlet duct, has practiced thrift the cost of changing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is an overall schematic of the present invention;
FIG. 2 is a schematic view of the main shaft part of the present invention;
FIG. 3 is an enlarged view of a portion of the sleeve according to the present invention;
FIG. 4 is a schematic diagram of a quarter inscription structure in accordance with the present invention;
FIG. 5 is a schematic view of a seal tube according to the present invention;
FIG. 6 is a cross-sectional view of a portion of a tapered block of the present invention;
FIG. 7 is a schematic view of a limiting assembly according to the present invention;
FIG. 8 is a diagram of the operation of the present invention;
fig. 9 is a state diagram of the present invention between the inlet pipe, the outlet pipe and the ball valve body.
Reference numerals in the drawings represent respectively: 1. a main shaft; 2. a conical block; 3. a shaft sleeve; 4. a silica gel plug sleeve; 5. a quarter tee; 6. inscribing in four minutes; 7. decompression koala; 8. sealing the tube; 9. an external thread; 10. a travel thread tube; 11. a limit nut; 12. a first seal ring; 13. a mounting groove; 14. a first piston disc; 15. a fixing frame; 16. a return spring; 17. a first connection hole; 18. sealing the air bag; 19. a second piston disc; 20. a positioning rod; 21. a through hole; 22. a piston rod; 23. a limiting plate; 24. a limiting block; 25. a limit groove; 26. a second seal ring; 27. a ball valve body; 28. an air outlet pipe; 29. an air inlet pipe; 30. breaking the pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples: the utility model provides a quick change ball valve device under pressure, includes ball valve body 27, outlet duct 28 and main shaft 1 that are connected with ball valve body 27, and the change mode under pressure in prior art falls into two kinds roughly, and one kind is that the ball valve is separated with intake pipe 29 earlier, opens the ball valve again, and the quick stock that utilizes passes the ball valve with a stock, blocks up the outlet duct 28 that is connected with it, but this operation is not only dangerous higher, because the longer stock of air current is difficult for inserting in outlet duct 28 moreover; the other is to preset an opening on the air outlet pipe 28, when the ball valve needs to be replaced, an obstruction is added into the air outlet pipe 28 through the opening so as to achieve the purpose of replacing under pressure, but the air outlet pipe 28 needs to be pretreated, the maintenance cost is increased, and the scheme is improved according to the problems, and is as follows:
referring to fig. 1-8; the device also comprises a conical block 2 which is arranged at the end part of the main shaft 1; the outer wall of the main shaft 1 is fixedly sleeved with a first sealing ring 12, the shaft sleeve 3 is sleeved on the main shaft 1, one end, close to the conical block 2, of the shaft sleeve 3 is connected with a silica gel plugging sleeve 4, the main shaft 1 is provided with a pushing component for pushing the shaft sleeve 3 to move, the pushing component comprises an external thread 9 arranged outside the main shaft 1, a travel thread pipe 10 is arranged on the main shaft 1 in a threaded manner, a limit nut 11 is arranged on the main shaft 1 in a threaded manner, the travel thread pipe 10 is positioned between the silica gel plugging sleeve 4 and the limit nut 11, and the silica gel plugging sleeve 4 is sleeved on the conical block 2 through moving; the quarter tee joint 5 is sleeved on the shaft sleeve 3, one end, far away from the ball valve body 27, of the quarter tee joint 5 is connected with a sealing pipe 8, the sealing pipe 8 and the quarter tee joint 5 are connected through threads, a second sealing ring 26 is arranged on the inner wall of the sealing pipe 8, the second sealing ring 26 is used for sealing connection between the sealing pipe 8 and the shaft sleeve 3, and one end, far away from the sealing pipe 8, of the quarter tee joint 5 is connected with a quarter inscription 6 used for connecting the ball valve body 27; the pressure release cock 7 is arranged on the quarter tee 5 and is used for releasing the pressure in the sealing pipe 8 and the quarter tee 5.
Firstly, the ball valve is closed, the air inlet pipe 29 is cut off for a certain distance (as shown in fig. 9) to obtain a broken pipe 30 (note that, in order to conveniently take off the broken pipe 30, a section of the cut object broken pipe 30 or the air inlet pipe 29 needs to be cut off when the broken pipe 30 and the air inlet pipe 29 are close to each other, at this moment, the ball valve and the air inlet pipe 29 are disconnected, the broken pipe 30 and the ball valve are connected together (the air inlet pipe, the air outlet pipe and the ball valve are connected by adopting a threaded connection mode), the broken pipe 30 is rotated, the broken pipe 30 and the ball valve are separated through threaded transmission, namely, the end, which is connected with the air inlet pipe, of the ball valve leaks out, the air inlet pipe 29 is taken off for one section (the length of the broken pipe 30 is larger than the whole length of the device), at this moment, an internal threaded connection port of the ball valve leaks out, and then the operation of replacing with pressure is carried out:
before the ball valve is connected, the conical block 2 is placed in the quarter tee 5 (the shaft sleeve 3 and the quarter tee 5 are connected through a second sealing ring 26 inside the sealing tube 8, as shown in fig. 8, namely, the shaft sleeve 3 can slide in the quarter tee 5, the sealing tube 8 and the quarter inscription 6, the conical block 2 is placed inside the quarter tee 5 by pulling the shaft sleeve 3), at the moment, the threaded end of the quarter inscription 6 can be connected with the ball valve, and the quarter inscription 6 is in threaded installation with the internal threaded end of the ball valve (as in the installation state of the ball valve and the quarter inscription 6 in fig. 8);
the ball valve is completely opened (the pressure relief cock 7 is required to be guaranteed to be in a closed state before the ball valve is completely opened), at the moment, the quarter tee 5, the ball valve and the air outlet pipe 28 are in a communicating state, as shown in fig. 8, the main shaft 1 and the shaft sleeve 3 are rapidly pressed through the inner hole of the ball valve to enter the air outlet pipe 28, the tapered block 2 is utilized to enter the air outlet pipe 28 (the distance between the thicker part of the tapered block 2 and the inner wall of the air outlet pipe 28 is relatively short), a worker holds one end of the main shaft 1 by one hand, simultaneously, the shaft sleeve 3 slides on the main shaft 1 (the sliding direction faces the air inlet pipe 28) through the rotating stroke threaded pipe 10, the shaft sleeve 3 and the main shaft 1 are connected by adopting the first sealing ring 12, so that the two can slide in a sealing state, at the moment, the silica gel plug 4 on the shaft sleeve 3 is gradually sleeved on the tapered block 2 at the end part of the main shaft 1, the silica gel plug 4 moves from the thinner part of the tapered block 2 to the thicker part, at the moment, the silica gel plug 4 is spread, the gap between the tapered block 2 and the air outlet pipe 28 can be exactly flexibly adapted to the gap between the tapered block 2 and the air outlet pipe 28 (the silica gel plug 4 is a gap between the elastic flexible and can be used for adapting to the gap) so that the gap between the tapered block 4 and the main shaft and the air outlet pipe can not enter the ball valve, and the gas valve;
opening the pressure relief cock 7, discharging the fuel gas between the ball valve and the quarter tee 5 (when the ball valve is opened, some fuel gas enters the quarter tee 5), then disassembling the ball valve and the air outlet pipe 28 (the ball valve can be disassembled by directly rotating the ball valve by adopting threaded connection between the air outlet pipe 28 and the ball valve, the quarter tee 5 rotates along with the ball valve in the process), removing the quarter tee 5 and the old ball valve from the shaft sleeve 3 (in a sliding manner, according to the sliding and separating between the quarter tee 5, the sealing pipe 8 and the quarter inscription 6 and the shaft sleeve 3, the ball valve can be removed together with the quarter tee 5, the sealing pipe 8, the quarter inscription 6 and the ball valve after being disconnected with the air outlet pipe 28, and then separating the old ball valve and the quarter tee 5 (separating from the quarter inscription 6 by threaded rotation);
the new ball valve is replaced and sleeved on the shaft sleeve 3 again, and the installation step is that the new ball valve is installed on the removed quarter inscription 6 in a threaded manner, the new ball valve is sleeved on the shaft sleeve 3 again in a sliding manner, the new ball valve is connected on the air outlet pipe 28 in a threaded manner, the travel threaded pipe 10 is reversely rotated, the silica gel plugging sleeve 4 on the shaft sleeve 3 is gradually separated from the conical block 2 at the end part of the main shaft 1, the silica gel plugging sleeve 4 moves from the thicker part of the conical block 2 to the thinner part until the silica gel plugging sleeve 4 is separated, the deformation is recovered (at the moment, the pressure release cock 7 is in a closed state), the shaft sleeve 3 is pulled to enable the shaft sleeve 3 and the main shaft 1 to leave the air outlet pipe 28 and the ball valve, the new ball valve is closed again, the pressure release cock 7 is opened again, the quarter three-way 5 and all parts are removed (through threaded rotation), and the new ball valve is installed. A new broken pipe 30 is taken and screwed onto the end of the ball valve, and is connected to the broken air inlet pipe 29 by welding, and the whole replacement process is completed.
In order to improve the effect of blocking gas, the end of the shaft sleeve 3 is provided with a silica gel plugging sleeve 4, the shaft sleeve 3 is pushed to move towards the direction of the conical block 2 (the shaft sleeve 3 slides on the main shaft 1 by rotating the travel thread pipe 10, the shaft sleeve 3 is sleeved on the main shaft 1, a first sealing ring 12 is arranged between the shaft sleeve 3 and the shaft sleeve 3, the silica gel plugging sleeve 4 moves from a thinner part of the conical block 2 to a thicker part, the silica gel plugging sleeve 4 can be enabled to be spread and deformed by the conical block 2, after the conical block 2 is inserted into the air outlet pipe 28, the silica gel plugging sleeve 4 is positioned between the conical block 2 and the inner wall of the air outlet pipe 28, the purpose of blocking gas is achieved by utilizing the elastic effect of the silica gel plugging sleeve 4 (as shown in fig. 8), and the first sealing ring 12 and the second sealing ring 26 are respectively arranged outside the main shaft 1 and inside the sealing pipe 8, so that the shaft sleeve 3 and the quarter tee 5 can slide and the air tightness of the silica gel plugging sleeve can be guaranteed.
According to the practical situation, the labor cost is saved, and the number of times of the gas-stopping operation of the buried pipe can be reduced. The operation of bursting the four-way ball valve and the planned replacement of the four-way ball valve before the urban emergency repair buried valve and the building valve is calculated according to 80 times each year, if the air is stopped for 4 hours per single-place pipe on average, 6 people are started, and the operation is calculated according to 57 yuan per hour per person per time of working hour. By the invention, 3 persons can be reduced for each maintenance, and the labor cost can be reduced: 57x4 (hour) x6 (person) x80 (times) -57x1 (hour) x3 (person) x80 (times) = 95760 yuan/year; and 3.75 yuan of calculation is carried out on each side of fuel gas, and each time of replacement can reduce the gas of 100 sides, the gas loss is reduced: 3.75x80 (times) x100 (squares) =30000 yuan/year, total: 125760/year.
Referring to fig. 7-8; the conical block 2 is kept away from main shaft 1 one end fixed mounting and has been seted up mounting groove 13, be equipped with first piston dish 14 in the mounting groove 13, fixed mounting has mount 15 in the mounting groove 13, be equipped with reset spring 16 between mount 15 and the first piston dish 14, set up a plurality of first connecting holes 17 that are linked together with mounting groove 13 on the outer wall of conical block 2, and a plurality of first connecting holes 17 are cyclic annular distribution, a plurality of first connecting holes 17 are connected with sealed gasbag 18 jointly, the equidistance is kept away from on the outer wall of conical block 2 and is equipped with a plurality of second connecting holes that are linked together with mounting groove 13, and a plurality of second connecting holes are cyclic annular distribution, all be equipped with second piston dish 19 in every second connecting hole, locating lever 20 is kept away from to second piston dish 19, main shaft 1 keeps away from conical block 2 one end and has been seted up the through-hole 21 that is linked together with mounting groove 13, piston rod 22 is kept away from to the movable plug-in of mounting groove 13 in through-hole 21, piston rod 22 one end is equipped with limiting plate 23, be equipped with spacing subassembly between limiting plate 23 and main shaft 1, the limiting includes that limiting block 24 fixed mounting is on limiting plate 23, limit block 24 and limiting block 1's tip 25 that is equipped with the limiting block 24 matches with limiting block 25.
In order to further improve stability in air blocking, the end part of the conical block 2 is provided with the mounting groove 13, the outer part of the conical block 2 is provided with the sealing air bag 18, the sealing air bag 18 is communicated with the mounting groove 13, the sealing air bag 18 is firstly contacted with the inner wall of the main shaft 1 when the main shaft 1 is inserted into the air outlet pipe 28, the pre-sealing effect is achieved, the air pressure in the air outlet pipe 28 is large, the first piston disc 14 in the mounting groove 13 is pushed to move, the first piston disc 14 compresses the air in the mounting groove 13, the sealing air bag 18 is inflated, and the pre-sealing is achieved by the air pressure of the fuel gas in the air outlet pipe 28.
In order to further improve stability in air blocking, the spindle 1 and the shaft sleeve 3 are prevented from being inclined in the inserting process, a plurality of second connecting holes are formed in the outer portion of the conical block 2, the positioning rod 20 in the second connecting holes is pushed out by air pressure in the mounting groove 13, the positioning rod is extruded on the inner wall of the air outlet pipe 28, and the spindle 1 and the shaft sleeve 3 are positioned by annular uniform stress, so that the inclination is prevented.
In order to avoid that the sealing air bag 18 cannot contact with the inner wall of the air outlet pipe 28, a through hole 21 communicated with the mounting groove 13 is formed in the end part of the main shaft 1, and the piston rod 22 is used for compressing air in the air inlet pipe, so that the sealing air bag 18 is expanded, and the air outlet pipe 28 with different inner diameters can be adapted. It is worth noting that the piston rod 22 is positioned by a limiting assembly arranged between the limiting plate 23 and the main shaft 1, so that the piston rod 22 with excessive internal air pressure is prevented from being extruded. The spacing subassembly of this scheme adopts the stopper 24 of T shape to accomplish spacing with the spacing groove 25 of T shape mutually supporting to be equipped with on the spacing groove 25 and insert and establish the mouth.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a change ball valve device under pressure fast, includes ball valve body (27), outlet duct (28) and main shaft (1) that are connected with ball valve body (27), its characterized in that still includes:
the conical block (2) is arranged at the end part of the main shaft (1);
the spindle sleeve (4) is sleeved on the spindle (1), one end, close to the conical block (2), of the spindle (4) is connected with the silica gel plug sleeve (3), a pushing component for pushing the spindle sleeve (4) to move is arranged on the spindle (1), and the silica gel plug sleeve (3) is sleeved on the conical block (2) through moving;
the four-way tee joint (5) is sleeved on the shaft sleeve (4), one end, far away from the ball valve body (27), of the four-way tee joint (5) is connected with the sealing pipe (8), the sealing pipe (8) is used for sealing connection of the four-way tee joint (5) and the silica gel plugging sleeve (3), and one end, far away from the sealing pipe (8), of the four-way tee joint (5) is connected with the four-way inscription (6) used for connecting the ball valve body (27);
the pressure release cock (7) is arranged on the quarter tee joint (5) and is used for releasing the pressure in the sealing pipe (8) and the quarter tee joint (5);
the pushing assembly comprises an external thread (9) arranged outside the main shaft (1), a travel thread pipe (10) is arranged on the main shaft (1) in a threaded mode, a limit nut (11) is arranged on the main shaft (1) in a threaded mode, and the travel thread pipe (10) is located between the silica gel plugging sleeve (3) and the limit nut (11).
2. The quick ball valve replacing device under pressure according to claim 1, wherein a first sealing ring (12) is fixedly sleeved on the outer wall of the main shaft (1), the sealing pipe (8) and the quarter tee (5) are connected through threads, and a second sealing ring (26) is arranged on the inner wall of the sealing pipe (8).
3. The quick ball valve replacing device under pressure according to claim 1, wherein an installation groove (13) is fixedly arranged at one end, far away from the main shaft (1), of the conical block (2), a first piston disc (14) is arranged in the installation groove (13), a plurality of first connecting holes (17) communicated with the installation groove (13) are formed in the outer wall of the conical block (2), the plurality of first connecting holes (17) are distributed annularly, and a plurality of first connecting holes (17) are commonly connected with a sealing air bag (18).
4. A quick change ball valve device under pressure according to claim 3, wherein a plurality of second connecting holes communicated with the mounting groove (13) are formed in the outer wall of the conical block (2) in an equidistant manner, the second connecting holes are distributed in a ring shape, a second piston disc (19) is arranged in each second connecting hole, and a positioning rod (20) is arranged on one side, away from the mounting groove (13), of the second piston disc (19).
5. A quick ball valve replacing device under pressure according to claim 3, wherein a through hole (21) communicated with the mounting groove (13) is formed in one end, far away from the conical block (2), of the main shaft (1), a piston rod (22) is movably inserted into one end, far away from the mounting groove (13), of the through hole (21), a limiting plate (23) is arranged at one end of the piston rod (22), and a limiting assembly is arranged between the limiting plate (23) and the main shaft (1).
6. A quick change ball valve assembly under pressure according to claim 3, characterized in that a fixed mount (15) is fixedly mounted in the mounting groove (13), and a return spring (16) is arranged between the fixed mount (15) and the first piston disc (14).
7. The quick change ball valve device under pressure according to claim 5, wherein the limit comprises a limit block (24) fixedly mounted on a limit plate (23), and a limit groove (25) matched with the limit block (24) is formed in the end portion of the main shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310111174.4A CN116181956B (en) | 2023-02-14 | 2023-02-14 | Quick ball valve device of changing under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310111174.4A CN116181956B (en) | 2023-02-14 | 2023-02-14 | Quick ball valve device of changing under pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116181956A CN116181956A (en) | 2023-05-30 |
| CN116181956B true CN116181956B (en) | 2023-09-22 |
Family
ID=86437897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310111174.4A Active CN116181956B (en) | 2023-02-14 | 2023-02-14 | Quick ball valve device of changing under pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116181956B (en) |
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| CN116181956A (en) | 2023-05-30 |
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Inventor after: Huang Jian Inventor after: Ruan Yangfu Inventor after: Huang Zhi Inventor after: Liang Yongxiong Inventor after: Kong Xiangjian Inventor after: Xu Guanhua Inventor after: Wang Chenyang Inventor before: Huang Jian Inventor before: Ruan Yangfu Inventor before: Huang Zhi Inventor before: Liang Yongxiong Inventor before: Kong Xiangjian Inventor before: Xu Guanhua Inventor before: Wang Chen |