CN117090960A - High-safety ball valve and use method thereof - Google Patents

High-safety ball valve and use method thereof Download PDF

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Publication number
CN117090960A
CN117090960A CN202311330443.2A CN202311330443A CN117090960A CN 117090960 A CN117090960 A CN 117090960A CN 202311330443 A CN202311330443 A CN 202311330443A CN 117090960 A CN117090960 A CN 117090960A
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CN
China
Prior art keywords
piston
box
rod
valve
fixedly connected
Prior art date
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Granted
Application number
CN202311330443.2A
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Chinese (zh)
Other versions
CN117090960B (en
Inventor
吴文林
陈刚
黄志慧
朱永平
陈超
华建宇
钟胜宏
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Sichuan Feiqiu Group Co ltd
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Sichuan Feiqiu Group Co ltd
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Priority to CN202311330443.2A priority Critical patent/CN117090960B/en
Publication of CN117090960A publication Critical patent/CN117090960A/en
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Publication of CN117090960B publication Critical patent/CN117090960B/en
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Classifications

    • 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
    • F16K5/06—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 with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • 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
    • 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
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm

Abstract

The invention relates to the technical field of valves, in particular to a high-safety ball valve and a use method thereof. The technical problems to be solved by the invention are as follows: the ball valve is easy to leak and age when transmitting gas, so that serious safety accidents occur. The technical implementation scheme of the invention is as follows: a ball valve with high safety and a use method thereof are characterized by comprising a starting mechanism, a plugging box, a piston mechanism, a left valve body, a pipeline and the like; the plugging box is sleeved at the flange joint of the left valve body and the pipeline; the piston mechanism is arranged on the upper side of the plugging box; a starting mechanism is arranged in the piston mechanism; the piston mechanism comprises a first piston box, a through hole is formed in the bottom of the first piston box, and the first piston box is connected with the plugging box through the through hole. According to the invention, through the piston mechanism and the plugging mechanism, the ball valve can be driven to be closed quickly by the piston mechanism and the plugging mechanism only through pushing leaked gas, so that the situation that the gas can not be treated in time and continuously leaked by personnel is avoided.

Description

High-safety ball valve and use method thereof
Technical Field
The invention relates to the technical field of valves, in particular to a high-safety ball valve and a use method thereof.
Background
Ball valves have important applications in natural gas transportation. Since natural gas is a flammable and explosive gas, various measures for preventing leakage are required in the transportation process. And the ball valve has good sealing performance under high pressure, high temperature and strong corrosive medium. Therefore, the method is widely applied to the natural gas conveying system, and ensures the stable and safe operation of the natural gas conveying system.
Because natural gas belongs to inflammable and explosive gas, serious safety accidents are easy to occur due to leakage, and the natural gas has great threat to civil safety and social safety.
Disclosure of Invention
In order to overcome the defect that in the prior art, leakage and aging are easy to occur when a ball valve is used for transmitting gas, so that serious safety accidents occur, the invention aims to provide the following advantages: a ball valve with high safety and a use method thereof are provided.
The technical scheme of the invention is as follows: a high-safety ball valve comprises a starting mechanism, a plugging box, a piston mechanism, a left valve body and a pipeline, wherein the plugging box is sleeved at the flange joint of the left valve body and the pipeline; the piston mechanism is arranged on the upper side of the plugging box; a starting mechanism is arranged in the piston mechanism; the piston mechanism comprises a first piston box, a through hole is formed in the bottom of the first piston box, and the first piston box is connected with the plugging box through the through hole; the starting mechanism comprises a sleeve, a push rod, a round piston, a spring tube, a first spring, spring blocks, a supporting seat, a first clamping seat and a second clamping seat, wherein the top end of the sleeve is fixedly connected in a through hole in the bottom of a first piston box, the bottom end of the sleeve is connected with a plugging box, the supporting seat is fixedly connected to the lower side of the inner wall of the sleeve, the round piston is slidably connected in the sleeve, the top of the round piston is fixedly connected with the push rod, the bottom of the round piston is fixedly connected with the spring tube, grooves are formed in the two ends of the spring tube, the spring blocks are slidably connected in the two grooves, a first spring is arranged between the spring blocks and the spring tube, the first clamping seat and the second clamping seat are fixedly connected in the left side of the top end of the sleeve, and the second clamping seat is arranged at the rear side of the top end of the sleeve.
Preferably, the starting mechanism further comprises a wedge rod, a fixed rod, a limiting rod and a second spring, wherein the fixed rod is symmetrically and fixedly connected in the first piston box, the wedge rod is connected between the two fixed rods in an upward rotating mode, one end of the wedge rod is rotationally connected with the limiting rod, and the second spring is arranged between one end, close to the limiting rod, of the wedge rod and the first piston box.
Preferably, the starting mechanism further comprises a water tank and a plug rod, wherein the water tank is fixedly connected to the left side in the first piston box, one side of the water tank is connected with the plug rod in a downward rotation mode, and one end of the plug rod is located right above the ejector rod.
Preferably, the plugging box comprises a first flange box, an expansion gasket and a second flange box, wherein the first flange box is symmetrically sleeved at the flange joint of the pipeline and the left valve body, the second flange box is fixedly connected between the two first flange boxes through bolts, the top of the second flange box is provided with a through hole, the bottom end of the sleeve is fixedly connected with the through hole at the top of the second flange box, and the expansion gasket is arranged between the two first flange boxes and the second flange box.
Preferably, the piston mechanism further comprises a connecting rod, a first square piston and a rack, wherein the first square piston is in sliding connection with the inside of the first piston box, one side of the first square piston is fixedly connected with the connecting rod, a through hole is formed in the left side of the connecting rod, a limiting rod is in sliding connection with the through hole formed in the connecting rod, one side, away from the connecting rod, of the first square piston is fixedly connected with the rack, and one end of the rack penetrates through one side of the first piston box.
Preferably, the valve further comprises a right valve body; the right side of the piston mechanism is provided with a blocking mechanism, and a right valve body is arranged below the blocking mechanism; the plugging mechanism comprises a second piston box, a second square piston, a gas pipe, a check valve, an air bag and a support column, wherein a through hole is formed in the upper portion of the right valve body, the gas pipe is fixedly connected in the through hole in the upper portion of the right valve body, the check valve is fixedly connected in the middle of the gas pipe, one end of the gas pipe is fixedly connected with the air bag, the other end of the gas pipe is fixedly connected with the second piston box, the support columns are symmetrically and fixedly connected on the left side and the right side of the bottom of the second piston box, the bottoms of the four support columns are fixedly connected with the right valve body, the second piston box is located above the right valve body, the second square piston is connected in the second piston box in a sliding mode, and one end, far away from the first square piston, of the rack penetrates through the second piston box and one side of the second square piston.
Preferably, the valve wheel set is further arranged on the right side of the plugging box, the valve wheel set comprises a valve shell, a valve core, a first gear, a valve rod, a second gear and a first fastening bolt, the left side valve shell is fixedly connected with one end of the left valve body, the right side valve shell is fixedly connected with one end of the right valve body, through holes are formed in four corners of the two side valve shells, the first fastening bolt is arranged in the four through holes, the valve core is arranged in the valve shell, the top of the valve core is fixedly connected with the valve rod, the valve rod is rotationally connected with the valve shell, the top of the valve rod is fixedly connected with the first gear, the first gear is meshed with the rack, the second gear is fixedly connected with the valve rod, and the second gear is located at the lower side of the first gear.
Preferably, the locking mechanism is arranged on two sides of the valve casing, the locking mechanism comprises a lock body, sliding locking blocks and second fastening bolts, two through holes are formed in one side of the lower portion of the left lock body, the second fastening bolts are arranged in the two through holes, the left lock body is fixedly connected with the left valve casing through the second fastening bolts, two through holes are formed in one side of the lower portion of the right lock body, the second fastening bolts are arranged in the two through holes, the right lock body is fixedly connected with the right valve casing through the second fastening bolts, the sliding locking blocks are slidably connected to the top ends of the two lock bodies, teeth are formed in one side of the two sliding locking blocks, and the two sliding locking blocks are meshed with the second gear through the teeth.
Preferably, the automatic alarm device comprises an alarm device, wherein the alarm device comprises a warning lamp, a buzzer and a trigger rod, the buzzer is fixedly connected to the left side of the top of the first piston box, the warning lamp is fixedly connected to the top of the buzzer, the trigger rod is fixedly connected to the bottom of the buzzer, and the bottom end of the trigger rod penetrates through the first piston box and is located right above the ejector rod.
Preferably, the use method of the high-safety ball valve comprises the following steps:
s1: when gas leaks at the joint of the left valve body and the flange of the pipeline, the gas pushes the round piston, the round piston moves upwards in the sleeve, the round piston drives the ejector rod to abut against the wedge-shaped rod and move upwards continuously, the wedge-shaped rod is forced to rotate upwards, then the limiting rod is separated from the connecting rod, and the leaked gas pushes the first square piston to move rightwards;
s2: the ejector rod pushes the wedge-shaped rod and then moves upwards continuously, when the ejector rod contacts the trigger rod, the buzzer and the warning lamp start to give an alarm, meanwhile, the ejector rod pushes the plug rod, the water tank starts to leak water, water enters the plugging box through the sleeve, and the expansion gasket absorbs water and expands to prevent gas from leaking through the plugging box for the second time;
s3, when the ejector rod pushes the plug rod, the elastic block ejects in the elastic tube, the elastic block is clamped into the first clamping seat and the second clamping seat, the round piston is stressed and fixed and does not move any more, and a gap is reserved between the bottom of the round piston and the top of the sleeve, so that water is not blocked by the round piston and smoothly enters the plugging box from the sleeve;
s4: when the leakage gas pushes the first square piston to move rightwards, the first square piston drives the first gear to rotate through the rack, the first gear drives the valve core to rotate and close, meanwhile, the second gear is stressed to rotate, the second gear drives the sliding locking block to move, the sliding locking block is matched with the locking body to clamp the valve casing, so that gas is prevented from leaking at the valve casing, meanwhile, the second square piston is stressed to slide rightwards in the second piston box, the second square piston extrudes gas in the second piston box to be injected into the air bag through the gas pipe, and the air bag expands in the right valve body, so that the blocking of the gas in the right valve body is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the piston mechanism and the plugging mechanism, the ball valve can be driven to be closed quickly by the piston mechanism and the plugging mechanism only through pushing leaked gas, so that the situation that the gas can not be treated in time and continuously leaked by personnel is avoided, and the safety of the ball valve is improved.
2. According to the invention, the water tank and the expansion gasket are designed, so that when gas leaks at the joint of the flange of the left valve body and the pipeline, water flow in the water tank enters the plugging box, the expansion gasket absorbs water flow to expand at the joint of the first flange box and the second flange box, and therefore, the expansion gasket can further fill a gap at the joint of the first flange box and the second flange box, and the gas is prevented from leaking out of the plugging box.
3. When the second square piston slides in the second piston box, the gas in the second piston box can be injected into the air bag through the one-way valve by the gas pipe, the air bag can further block the gas in the right valve body by expanding, and the one-way valve is arranged on the gas pipe, so that the gas in the air bag cannot flow back into the second piston box due to the extrusion of the gas in the right valve body, and the safety is improved.
4. When the first square piston drives the rack to move, the first gear meshed with the rack can drive the valve rod to move, the valve rod can drive the second gear to rotate, and the second gear drives the sliding locking block to lock the two valve casings for the second time, so that leakage of gas between the two valve casings is prevented, and safety is improved.
5. According to the invention, the valve shell of the ball valve is designed to be detachable, so that the valve core is worn after the ball valve is used for a long time, and when the ball valve needs to be replaced, the valve core is replaced by only disassembling four first fastening bolts, so that the required labor cost can be greatly reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting structure at the sleeve in the starting mechanism of the present invention;
FIG. 3 is a schematic view of a part of the starting mechanism of the present invention;
FIG. 4 is a schematic view of the mounting structure of the water tank and stopper rod of the starting mechanism of the present invention;
FIG. 5 is a schematic structural view of the plugging box of the present invention;
FIG. 6 is a schematic view of the piston mechanism and plugging mechanism of the present invention;
FIG. 7 is an enlarged view of a portion of the structure of FIG. 6A in accordance with the present invention;
FIG. 8 is a schematic view of the structure of the valve train and locking mechanism of the present invention;
fig. 9 is a schematic structural diagram of an alarm device according to the present invention.
Reference numerals illustrate: 1_start mechanism, 101_sleeve, 102_ram, 103_round piston, 104_ram, 105_first spring, 106_ram, 107_support seat, 108_wedge rod, 109_fixed rod, 110_stop rod, 111_second spring, 112_first cartridge, 113_second cartridge, 114_water tank, 115_plug rod, 2_plug box, 201_first flange box, 202_expansion washer, 203_second flange box, 3_piston mechanism, 301_first piston box, 302_connecting rod, 303_first square piston, 304_rack, the valve comprises a 4-plugging mechanism, a 401-second piston box, a 402-second square piston, a 403-gas pipe, a 404-check valve, a 405-airbag, a 406-supporting column, a 5-valve wheel set, a 501-valve shell, a 502-valve core, a 503-first gear, a 504-valve rod, a 505-second gear, a 506-first fastening bolt, a 6-locking mechanism, a 601-locking body, a 602-sliding locking piece, a 603-second fastening bolt, a 7-alarm device, a 701-alarm lamp, a 702-buzzer, a 703-triggering rod, a 8-left valve body, a 9-right valve body and a 10-pipeline.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
Example 1
1-4, the high-safety ball valve comprises a starting mechanism 1, a plugging box 2, a piston mechanism 3, a left valve body 8 and a pipeline 10, wherein the plugging box 2 is sleeved at the flange joint of the left valve body 8 and the pipeline 10; the piston mechanism 3 is arranged on the upper side of the plugging box 2; a starting mechanism 1 is arranged in the piston mechanism 3; the piston mechanism 3 comprises a first piston box 301, a through hole is formed in the bottom of the first piston box 301, and the first piston box 301 is connected with the plugging box 2 through the through hole; the starting mechanism 1 comprises a sleeve 101, a top rod 102, a round piston 103, a spring tube 104, a first spring 105, a spring block 106, a supporting seat 107, a first clamping seat 112 and a second clamping seat 113, wherein the top end of the sleeve 101 is fixedly connected in a through hole at the bottom of a first piston box 301, the top end of the sleeve 101 is fixedly connected in the through hole at the bottom of the first piston box 301, the bottom end of the sleeve 101 is connected with a plugging box 2, the supporting seat 107 is fixedly connected below the inner wall of the sleeve 101, the supporting seat 107 is in a cross shape, the round piston 103 is slidably connected in the sleeve 101, the top of the round piston 103 is fixedly connected with the top rod 102, the bottom of the round piston 103 is fixedly connected with the spring tube 104, the spring tube 104 is L-shaped, grooves are formed in two ends of the spring tube 104, the spring blocks 106 are slidably connected in the two grooves, the first clamping seat 112 and the second clamping seat 113 matched with the spring block 106 are arranged between the spring tube 104, the first clamping seat 112 is positioned on the left side of the top end of the sleeve 101, the second clamping seat 113 is positioned on the rear side of the top end of the sleeve 101, and the first clamping seat 112 is provided with the first clamping seat 112.
When gas leaks at the flange connection part of the left valve body 8 and the pipeline 10, the gas leaks in the plugging box 2, and because the plugging box 2 is in a sealing state, the gas pushes the round piston 103 through the sleeve 101, the round piston 103 is pushed by the gas to move upwards in the sleeve 101, the round piston 103 drives the ejector rod 102 to move upwards, when the bottom of the round piston 103 moves to the top of the sleeve 101, the elastic blocks 106 in the elastic tube 104 are extruded by the first springs 105 to eject outwards, and the two elastic blocks 106 are respectively clamped into the first clamping seat 112 and the second clamping seat 113, so that the position of the round piston 103 is fixed.
The starting mechanism 1 further comprises a wedge-shaped rod 108, a fixed rod 109, a limiting rod 110 and a second spring 111, wherein the fixed rod 109 is symmetrically and fixedly connected in the first piston box 301, the fixed rod 109 is located on the front side of the sleeve 101, the wedge-shaped rod 108 is connected between the two fixed rods 109 in an upward-deflection mode, one end of the wedge-shaped rod 108 is located above the ejector rod 102, one end of the wedge-shaped rod 108 is rotatably connected with the limiting rod 110, a second spring 111 is arranged between one end, close to the limiting rod 110, of the wedge-shaped rod 108 and the first piston box 301, and the second spring 111 is used for supporting the wedge-shaped rod 108 to keep balance.
When the ejector rod 102 does not contact the wedge-shaped rod 108, the second spring 111 supports the wedge-shaped rod 108 to keep balance, the ejector rod 102 moves upwards under the driving of the round piston 103, when the ejector rod 102 contacts the wedge-shaped rod 108, the wedge-shaped rod 108 is pushed by the ejector rod 102 to rotate clockwise by taking the upper part of the fixed rod 109 as an axis, the second spring 111 is stressed to compress downwards, and at the moment, the limit rod 110 is stressed to move downwards at the rear part of the wedge-shaped rod 108, so that the limit on the piston mechanism 3 is released.
The starting mechanism 1 further comprises a water tank 114 and a plug rod 115, wherein the water tank 114 is fixedly connected to the left side in the first piston box 301, one side of the water tank 114 is connected with the plug rod 115 in a downward rotating mode, one end of the plug rod 115 is located right above the ejector rod 102, and the plug rod 115 is used for blocking a water outlet of the water tank 114.
When the round piston 103 drives the ejector rod 102 to move to the position of the plug rod 115, the top of the ejector rod 102 pushes the plug rod 115, the plug rod 115 is stressed to rotate anticlockwise, the water tank 114 is opened, the water tank 114 starts to leak, and water flow falls down through the sleeve 101 and enters the plugging box 2.
Example two
On the basis of embodiment 1, as shown in fig. 5-9, the plugging box 2 comprises a first flange box 201, an expansion gasket 202 and a second flange box 203, wherein the first flange box 201 is symmetrically sleeved at the flange joint of the pipeline 10 and the left valve body 8, the second flange boxes 203 are fixedly connected between the two first flange boxes 201 through bolts, through holes are formed in the tops of the second flange boxes 203, the through holes in the tops of the second flange boxes 203 are circular, the bottom end of the sleeve 101 is fixedly connected with the through holes in the tops of the second flange boxes 203, and the expansion gasket 202 is arranged between the two first flange boxes 201 and the second flange boxes 203.
When water flows into the plugging box 2, the expansion gasket 202 between the two first flange boxes 201 and the second flange boxes 203 starts to absorb water, the expansion gasket 202 expands after absorbing water, and the expansion gasket 202 expands between the first flange boxes 201 and the second flange boxes 203, so that the plugging box 2 is sealed.
The piston mechanism 3 further comprises a connecting rod 302, a first square piston 303 and a rack 304, wherein the first square piston 303 is slidably connected inside the first piston box 301, one side of the first square piston 303 is fixedly connected with the connecting rod 302, a through hole is formed in the left side of the connecting rod 302, the through hole of the connecting rod 302 is square, the limiting rod 110 is slidably connected with the through hole formed in the connecting rod 302, the position of the first square piston 303 is limited, the rack 304 is fixedly connected to one side, away from the connecting rod 302, of the first square piston 303, and one end of the rack 304 penetrates through one side of the first piston box 301.
When the wedge rod 108 drives the limit rod 110 to slide downwards, the limit rod 110 slides downwards in the groove of the connecting rod 302, the connecting rod 302 is not limited any more, the first square piston 303 starts to move rightwards under the pushing of gas, and the first square piston 303 drives the rack 304 to move rightwards.
The valve also comprises a right valve body 9; the right side of the piston mechanism 3 is provided with a blocking mechanism 4, and a right valve body 9 is arranged below the blocking mechanism 4; the plugging mechanism 4 comprises a second piston box 401, a second square piston 402, an air pipe 403, a one-way valve 404, an air bag 405 and a supporting column 406, wherein a through hole is formed in the upper portion of the right valve body 9, the through hole in the upper portion of the right valve body 9 is circular, the air pipe 403 is fixedly connected in the through hole in the upper portion of the right valve body 9, the air pipe 403 is L-shaped, the middle part of the air pipe 403 is fixedly connected with the one-way valve 404, one end of the air pipe 403 is fixedly connected with the air bag 405, the other end of the air pipe 403 is fixedly connected with the second piston box 401, the supporting columns 406 are symmetrically and fixedly connected to the left and right sides of the bottom of the second piston box 401, the bottoms of the four supporting columns 406 are fixedly connected with the right valve body 9, the second piston box 401 is located above the right valve body 9, the second square piston 402 is connected in a sliding manner in the second piston box 401, and one end of the rack 304 far away from the first square piston 303 penetrates through the second piston box 401 and is fixedly connected with one side of the second square piston 402.
When the first square piston 303 drives the rack 304 to move rightwards, the rack 304 drives the second square piston 402 to move rightwards in the second piston box 401, the second piston box 401 is kept stable through the supporting column 406, at the moment, the second square piston 402 extrudes gas in the second piston box 401, the gas in the second piston box 401 is extruded into the gas pipe 403, the gas enters the gas bag 405 through the one-way valve 404 when passing through the gas pipe 403, and the gas bag 405 expands in the right valve body 9, so that the blocking of the gas in the right valve body 9 is realized.
Still including valve wheelset 5, shutoff box 2 right side is equipped with valve wheelset 5, valve wheelset 5 is including valve casing 501, case 502, first gear 503, valve rod 504, second gear 505 and first fastening bolt 506, left side valve casing 501 and the one end fixed connection of left valve body 8, right side valve casing 501 and the one end fixed connection of right valve body 9, the through-hole has all been seted up at four angles of both sides valve casing 501, all be equipped with first fastening bolt 506 in every through-hole, four first fastening bolts 506 are used for two valve casings 501 fastening connection, be equipped with case 502 in valve casing 501, case 502 top fixedly connected with valve rod 504, valve rod 504 rotates with valve casing 501 to be connected, the first gear 503 of top fixedly connected with of valve rod 504, first gear 503 meshes with rack 304, second gear 505 fixed connection is on valve rod 504, second gear 505 is located first gear 503 downside, second gear 505 is the tooth-missing gear.
The valve housing 501 is of a detachable design, the valve housing 501 is fastened and connected through a first fastening bolt 506, when the rack 304 moves rightwards, a first gear 503 meshed with the rack 304 is stressed to rotate anticlockwise, the first gear 503 drives a valve rod 504, a second gear 505 and a valve core 502 to rotate anticlockwise, and the valve core 502 rotates anticlockwise in the valve housing 501 to be closed, so that gas circulation is blocked.
Still including locking mechanism 6, the valve casing 501 both sides all are equipped with locking mechanism 6, locking mechanism 6 is including the lock body 601, slide locking piece 602 and second fastening bolt 603, two through-holes have been seted up to left side lock body 601 lower part one side, all be equipped with second fastening bolt 603 in two through-holes, two through-holes have been seted up to left side lock body 601 lower part one side through second fastening bolt 603 and left side valve casing 501 fixed connection, all be equipped with second fastening bolt 603 in two through-holes, right side lock body 601 passes through second fastening bolt 603 and right side valve casing 501 fixed connection, all sliding connection has slide locking piece 602 on both sides lock body 601 top, slide locking piece 602 is the L shape, two slide locking piece 602 top one side all are equipped with the tooth, the tooth of two slide locking pieces 602 meshes with second gear 505.
When the first gear 503 drives the valve rod 504 to rotate, the second gear 505 is driven by the valve rod 504 to rotate anticlockwise, the second gear 505 drives the two sliding locking blocks 602 to slide towards one sides of the two valve casings 601 respectively, when the second gear 505 rotates anticlockwise for ninety degrees, one side of the lower parts of the two sliding locking blocks 602 respectively props against one side of the two valve casings 501, the two sliding locking blocks 602 are matched with the two valve casings 601 to clamp the two valve casings 501, so that the extrusion locking of the two valve casings 501 is realized, and gas leakage at the joint of the two valve casings 501 is prevented.
The alarm device 7 comprises an alarm lamp 701, a buzzer 702 and a trigger rod 703, wherein the buzzer 702 is fixedly connected to the left side of the top of the first piston box 301, the alarm lamp 701 is fixedly connected to the top of the buzzer 702, the trigger rod 703 is fixedly connected to the bottom of the buzzer 702, the bottom end of the trigger rod 703 penetrates through the first piston box 301 and is located right above the ejector rod 102, and the trigger rod 703 is cylindrical.
When the round piston 103 drives the ejector rod 102 to move to the top of the sleeve 101, the top end of the ejector rod 102 abuts against the trigger rod 703, after the trigger rod 703 receives pressure, the trigger rod 703 transmits signals to the warning lamp 701 and the buzzer 702, and the warning lamp 701 and the buzzer 702 start to send out signals for alarming.
The use method of the high-safety ball valve comprises the following steps:
s1: when gas leaks at the flange joint of the left valve body 8 and the pipeline 10, the gas pushes the round piston 103, the round piston 103 moves upwards in the sleeve 101, the round piston 103 drives the ejector rod 102 to abut against the wedge-shaped rod 108 and move upwards continuously, the wedge-shaped rod 108 is forced to rotate upwards, then the limiting rod 110 is separated from the connecting rod 302, and the leaked gas pushes the first square piston 303 to move rightwards;
s2: the ejector rod 102 continuously moves upwards after pushing up the wedge-shaped rod 108, when the ejector rod 102 contacts the trigger rod 703, the buzzer 702 and the warning lamp 701 start to give an alarm, meanwhile, the ejector rod 102 pushes up the plug rod 115, the water tank 114 starts to leak water, the water enters the plugging box 2 from the sleeve 101, and the expansion gasket 202 absorbs water and expands to prevent gas from leaking through the plugging box 2 for the second time;
s3, when the ejector rod 102 pushes the plug rod 115 open, the elastic block 106 ejects in the elastic tube 104, the elastic block 106 is clamped in the first clamping seat 112 and the second clamping seat 113, at the moment, the round piston 103 is stressed and fixed and does not move any more, and a gap is reserved between the bottom of the round piston 103 and the top of the sleeve 101, so that water cannot be blocked by the round piston 103, and the water smoothly enters the plugging box 2 from the sleeve 101;
s4: when the leaked gas pushes the first square piston 303 to move rightwards, the first square piston 303 drives the first gear 503 to rotate through the rack 304, the first gear 503 drives the valve core 502 to rotate and close, meanwhile, the second gear 505 is stressed to rotate, the second gear 505 drives the sliding locking block 602 to move, the sliding locking block 602 is matched with the locking body 601 to clamp the valve casing 501, so that gas is prevented from leaking at the valve casing 501, meanwhile, the second square piston 402 is stressed to slide in the second piston box 401, the second square piston 402 extrudes the gas in the second piston box 401 to be injected into the air bag 405 through the gas pipe 403, and the air bag 405 expands in the right valve body 9, so that the blocking of the gas in the right valve body 9 is realized.
The foregoing examples have shown only the preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A high security ball valve, its characterized in that: the device comprises a starting mechanism (1), a plugging box (2), a piston mechanism (3), a left valve body (8) and a pipeline (10), wherein the plugging box (2) is sleeved at the flange joint of the left valve body (8) and the pipeline (10); the piston mechanism (3) is arranged on the upper side of the plugging box (2); a starting mechanism (1) is arranged in the piston mechanism (3); the piston mechanism (3) comprises a first piston box (301), a through hole is formed in the bottom of the first piston box (301), and the first piston box (301) is connected with the plugging box (2) through the through hole; the starting mechanism (1) comprises a sleeve (101), a push rod (102), a round piston (103), a spring tube (104), a first spring (105), a spring block (106), a supporting seat (107), a first clamping seat (112) and a second clamping seat (113), wherein the top end of the sleeve (101) is fixedly connected in a through hole in the bottom of a first piston box (301), the bottom end of the sleeve (101) is connected with a plugging box (2), the supporting seat (107) is fixedly connected below the inner wall of the sleeve (101), the round piston (103) is slidably connected in the sleeve (101), the top of the round piston (103) is fixedly connected with the push rod (102), the bottom of the round piston (103) is fixedly connected with the spring tube (104), grooves are formed in two ends of the spring tube (104), the two grooves are fixedly connected with the spring block (106), a first spring (105) is arranged between the spring block (106) and the spring tube (104), a first clamping seat (112) and a second clamping seat (113) matched with the spring block (106) are fixedly connected in the first piston box (301), and the top end of the first clamping seat (112) is positioned at the left side of the sleeve (101) and the top end of the second clamping seat (101) is positioned at the left side of the sleeve (101).
2. A high safety ball valve as in claim 1 wherein: the starting mechanism (1) further comprises a wedge-shaped rod (108), fixing rods (109), limiting rods (110) and a second spring (111), wherein the fixing rods (109) are symmetrically and fixedly connected in the first piston box (301), the wedge-shaped rod (108) is rotatably connected between the two fixing rods (109) in an upward-deflection mode, one end of the wedge-shaped rod (108) is rotatably connected with the limiting rods (110), and the second spring (111) is arranged between one end, close to the limiting rods (110), of the wedge-shaped rod (108) and the first piston box (301).
3. A high safety ball valve as in claim 2 wherein: the starting mechanism (1) further comprises a water tank (114) and a plug rod (115), the water tank (114) is fixedly connected to the left inside the first piston box (301), the plug rod (115) is connected to one side of the water tank (114) in a downward rotating mode, and one end of the plug rod (115) is located right above the ejector rod (102).
4. A high safety ball valve as in claim 3 wherein: the plugging box (2) comprises a first flange box (201), an expansion gasket (202) and a second flange box (203), wherein the first flange box (201) is symmetrically sleeved at the flange joint of the pipeline (10) and the left valve body (8), the second flange boxes (203) are fixedly connected between the two first flange boxes (201) through bolts, through holes are formed in the tops of the second flange boxes (203), the bottom end of the sleeve (101) is fixedly connected with the through holes in the tops of the second flange boxes (203), and the expansion gasket (202) is arranged between the two first flange boxes (201) and the second flange boxes (203).
5. A high safety ball valve as in claim 4 wherein: the piston mechanism (3) further comprises a connecting rod (302), a first square piston (303) and a rack (304), wherein the first square piston (303) is slidably connected inside the first piston box (301), one side of the first square piston (303) is fixedly connected with the connecting rod (302), a through hole is formed in the left side of the connecting rod (302), the limiting rod (110) is slidably connected with the through hole formed in the connecting rod (302), one side, away from the connecting rod (302), of the first square piston (303) is fixedly connected with the rack (304), and one end of the rack (304) penetrates through one side of the first piston box (301).
6. A high safety ball valve as in claim 5 wherein: the valve also comprises a right valve body (9); the right side of the piston mechanism (3) is provided with a blocking mechanism (4), and a right valve body (9) is arranged below the blocking mechanism (4); the plugging mechanism (4) comprises a second piston box (401), a second square piston (402), an air pipe (403), one-way valves (404), an air bag (405) and supporting columns (406), wherein through holes are formed in the upper portion of the right valve body (9), the air pipe (403) is fixedly connected in the through holes in the upper portion of the right valve body (9), the one-way valves (404) are fixedly connected in the middle of the air pipe (403), the air bag (405) is fixedly connected to one end of the air pipe (403), the supporting columns (406) are symmetrically and fixedly connected to the other end of the air pipe (403), the bottoms of the second piston box (401) are fixedly connected with the supporting columns (406), the bottoms of the four supporting columns (406) are fixedly connected with the right valve body (9), the second piston box (401) is located above the right valve body (9), the second square piston (402) is connected in a sliding mode, and one end, far away from the first square piston (303), of the rack (304) penetrates through the second piston box (401) and is fixedly connected to one side of the second square piston (402).
7. A high safety ball valve as in claim 6 wherein: still including valve wheelset (5), shutoff box (2) right side is equipped with valve wheelset (5), valve wheelset (5) are including valve casing (501), case (502), first gear (503), valve rod (504), second gear (505) and first fastening bolt (506), left side valve casing (501) and the one end fixed connection of left valve body (8), the one end fixed connection of right side valve casing (501) and right valve body (9), the through-hole has all been seted up at four angles of both sides valve casing (501), all be equipped with first fastening bolt (506) in four through-holes, be equipped with case (502) in valve casing (501), case (502) top fixedly connected with valve rod (504), valve rod (504) are connected with valve casing (501) rotation, the top fixedly connected with first gear (503) of valve rod (504), first gear (503) meshes with rack (304), second gear (505) fixed connection is on valve rod (504), second gear (505) are located first gear (503) downside.
8. A high safety ball valve as in claim 7 wherein: still including locking mechanism (6), valve casing (501) both sides all are equipped with locking mechanism (6), locking mechanism (6) are including lock body (601), slip locking piece (602) and second fastening bolt (603), two through-holes have been seted up to left side lock body (601) lower part one side, all be equipped with second fastening bolt (603) in two through-holes, left side lock body (601) are through second fastening bolt (603) and left side valve casing (501) fixed connection, two through-holes have been seted up on right side lock body (601) lower part one side, all be equipped with second fastening bolt (603) in two through-holes, right side lock body (601) are through second fastening bolt (603) and right side valve casing (501) fixed connection, equal sliding connection in both sides lock body (601) top has slip locking piece (602), two slip locking pieces (602) one side all are equipped with the tooth, two slip locking pieces (602) are through tooth and second gear (505) meshing.
9. A high safety ball valve as in claim 8 wherein: the alarm device is characterized by further comprising an alarm device (7), wherein the alarm device (7) comprises a warning lamp (701), a buzzer (702) and a trigger rod (703), the buzzer (702) is fixedly connected to the left side of the top of the first piston box (301), the warning lamp (701) is fixedly connected to the top of the buzzer (702), the trigger rod (703) is fixedly connected to the bottom of the buzzer (702), and the bottom end of the trigger rod (703) penetrates through the first piston box (301) and is located right above the ejector rod (102).
10. A method of using a high safety ball valve according to any one of claims 1 to 9, comprising the steps of:
s1: when gas leaks at the flange joint of the left valve body (8) and the pipeline (10), the gas pushes the round piston (103), the round piston (103) moves upwards in the sleeve (101), the round piston (103) drives the ejector rod (102) to abut against the wedge-shaped rod (108) and move upwards continuously, the wedge-shaped rod (108) is forced to rotate upwards, then the limiting rod (110) is separated from the connecting rod (302), and the leaked gas pushes the first square piston (303) to move rightwards;
s2: the ejector rod (102) pushes the wedge-shaped rod (108) and then moves upwards, when the ejector rod (102) contacts the trigger rod (703), the buzzer (702) and the warning lamp (701) start to give an alarm, meanwhile, the ejector rod (102) pushes the plug rod (115), the water tank (114) starts to leak water, the water enters the plugging box (2) from the sleeve (101), and the expansion gasket (202) absorbs water and expands to prevent gas from leaking through the plugging box (2) for the second time;
s3, when the ejector rod (102) pushes the plug rod (115), the elastic block (106) ejects out of the elastic tube (104), the elastic block (106) is clamped into the first clamping seat (112) and the second clamping seat (113), at the moment, the round piston (103) is stressed and fixed and does not move any more, and a gap is reserved between the bottom of the round piston (103) and the top of the sleeve (101), so that water cannot be blocked by the round piston (103), and smoothly enters the plugging box (2) from the sleeve (101);
s4: when the leakage gas pushes the first square piston (303) to move rightwards, the first square piston (303) drives the first gear (503) to rotate through the rack (304), the first gear (503) drives the valve core (502) to rotate and close, meanwhile, the second gear (505) is stressed to rotate, the second gear (505) drives the sliding locking block (602) to move, the sliding locking block (602) is matched with the locking body (601) to clamp the valve casing (501), so that gas leakage at the valve casing (501) is prevented, meanwhile, the second square piston (402) is forced to slide rightwards in the second piston box (401), the second square piston (402) extrudes gas in the second piston box (401) to be injected into the air bag (405) through the gas transmission pipe (403), and the air bag (405) expands in the right valve body (9), so that gas blocking in the right valve body (9) is realized.
CN202311330443.2A 2023-10-16 2023-10-16 High-safety ball valve and use method thereof Active CN117090960B (en)

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