CN106763954A - A kind of gas pipeline self-closing valve - Google Patents
A kind of gas pipeline self-closing valve Download PDFInfo
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- CN106763954A CN106763954A CN201710105497.7A CN201710105497A CN106763954A CN 106763954 A CN106763954 A CN 106763954A CN 201710105497 A CN201710105497 A CN 201710105497A CN 106763954 A CN106763954 A CN 106763954A
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- China
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- valve body
- gas
- main valve
- air inlet
- valve plate
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
Abstract
The invention discloses a kind of gas pipeline self-closing valve, main valve body including fuel gas ball valve, also include the first automatic switch mechanism, second automatic switch mechanism and startup automatic control switch, first automatic switch mechanism is arranged in the air inlet of main valve body, for open or because gaseous-pressure be less than rated pressure 1/3 when be automatically switched off air inlet；Second automatic switch mechanism is arranged on the air outlet of main valve body, and source of the gas can be automatically cut off during for the damaged leakage of flexible pipe, gaseous-pressure beyond 35 times of rated pressure scope；The inlet end of the main valve body is structure as a whole with the valve body of fuel gas ball valve, and the inlet end connection gas pipeline of fuel gas ball valve is used for manual unlocking or closing, the outlet side connection gas hose of main valve body.The beneficial effects of the invention are as follows realizing superpressure, damaged leakage, under-voltage, stopping the supple of gas or steam automatically cuts off source of the gas, ensures gas user safety.
Description
Technical field
Improved the present invention relates to valve of gas pipeline, particularly a kind of gas pipeline self-closing valve.
Background technology
Each side exploration, research are carried out for this, it is proposed that a variety of solutions.Chinese invention patent ZL
2015 2 0757647.9 give a kind of gas pipeline self-closing valve, by the automatic switch assembly set in main valve body, switch
Assembly is made up of shifting block, pull bar, self-closing spring, rubber valve plate.Gas storage storehouse upper port is arranged on for sealing and utilizing air to move
Power starts and closes the epithelium of automatic switch assembly, for the upper lid of closed group valve body upper port, and through upper lid
Pull bar connection pull-button in switching control mechanism, forms one and complete automatically controls main valve body.The air inlet port of main valve body connects
Ordinary ball valve is connect, with the gas pipeline self-closing valve that main valve body constitutes manual, automatic integratedization.When pull-button is pulled, combustion gas enters storage
Gas storehouse epithelium keeps automatic switch assembly normally-open under rated pressure, when there is damaged leakage, gaseous-pressure it is too low
Or when too high, gas supply can automatically cut off source of the gas when stopping the supple of gas or steam, so as to ensure gas user safety.Because technology is constantly being entered
Step, above-mentioned Chinese invention patent ZL 2,015 2 0757647.9 must also constantly update the replacement, it is necessary to which upgrade design is a kind of again
Safer reliable gas pipeline self-closing valve.
The content of the invention
The invention aims to solve the above problems, a kind of gas pipeline self-closing valve is devised.
Realize above-mentioned purpose the technical scheme is that, a kind of gas pipeline self-closing valve, including fuel gas ball valve main valve
Body, also including the first automatic switch mechanism, the second automatic switch mechanism and start automatic control switch,
First automatic switch mechanism is arranged in the air inlet of main valve body, for opening or because gaseous-pressure is less than specified pressure
Air inlet is automatically switched off during power 1/3；
Second automatic switch mechanism is arranged on the air outlet of main valve body, exceeds for the damaged leakage of flexible pipe, gaseous-pressure
Source of the gas can be automatically cut off during 3-5 times of rated pressure scope；
The inlet end of the main valve body is structure as a whole with the valve body of fuel gas ball valve, the inlet end connection gas pipeline of fuel gas ball valve
For manual unlocking or closing, the outlet side connection gas hose of main valve body.
The main valve body includes the first internal thread, ball valve cavity, the first poly- four Buddhists sealing gasket fitting recess, spring tray assembling
Groove, inlet channel, gas storage storehouse, guide base, vertical pilot hole, laterally steering hole, outlet passageway, the second internal thread, outside second
The first annular groove of screw thread, upper port, cylinder, stem guiding hole, one end of the main valve body connect with ball valve chamber body phase, institute
The other end for stating main valve body is connected with outlet passageway, the gas storage storehouse is provided with inside the main valve body, in the gas storage storehouse
The heart is provided with guide base, and the air inlet for being provided centrally with vertical pilot hole, laterally steering hole and main valve body of the guide base is led to
Cylinder is stretched out in road and the coaxial insertion of outlet passageway, the ball valve cavity insertion ball valve cavity upper end of the inlet end of the main valve body
Valve rod hole, the inlet end of the main valve body is provided with the first internal thread, and the outlet side of the main valve body is provided with second internal thread
With the second external screw thread.
First automatic switch mechanism include setting gradually the air inlet control cabinet of inlet end for blocking main valve body, every
Wall, air inlet rubber valve plate, intake leaf, air inlet spring, spring tray；
The air inlet rubber valve plate is provided with the first centre bore, and the periphery of first centre bore forms the first bulge loop, it is described enter
Gas rubber valve plate edge is provided with the second bulge loop；
Second bulge loop is highly consistent with the first bulge loop upper surface；
Described intake leaf includes the 3rd valve plate, annular groove, the axis of guide, and the one side of the 3rd valve plate sets the annular
Groove, is provided with the axis of guide for stretching out in the annular groove；
The spring tray is provided with circular hole, and the edge of the circular hole is provided with the 3rd bulge loop, the edge of the spring tray
The 4th bulge loop is provided with, the 3rd bulge loop is highly consistent with the 4th bulge loop；First centre bore of the air inlet rubber valve plate is worn
Cross the axis of guide to be assemblied in annular groove, first centre bore is abutted on the 3rd valve plate, the axis of guide sequentially passes through described
The ball valve cavity of main valve body, the first poly- four Buddhists sealing gasket fitting recess, spring tray fitting recess, air inlet control cabinet, and by air inlet
In the laterally steering hole of passage insertion gas storage storehouse guide base, filled in the described first poly- four Buddhists sealing gasket fitting recess and spring tray
With air inlet spring and spring tray is assembled in groove successively, the air inlet spring one end is acted in the annular convex ring of intake leaf,
The other end is acted in the annular groove of spring tray.
Second automatic switch mechanism includes support frame, rubber o-ring, outlet spring, air inlet rubber valve plate, air outlet valve
Plate,
Support frame as described above is provided with centre pilot hole and multiple fan air passages, before the centre pilot hole insertion support frame
Surface afterwards, the edge in the close centre pilot hole of support frame as described above is angularly provided with multiple fan air passages, described
Support frame with the surface of multiple fan air passage homonymies is provided with round ring boss, and the inlet end of support frame as described above is
Sealing ring surface, the upper surface of the upper surface less than sealing surface of the round ring boss, the upper surface of the fan air passage is low
In the upper surface of round ring boss；
The outlet rubber valve plate is provided with the 5th centre bore, and the edge of the 5th centre bore forms the 5th bulge loop, described
The edge of air inlet rubber valve plate is provided with the 6th bulge loop, and the 5th bulge loop is highly consistent with the 6th bulge loop upper surface；
The outlet valve plate is provided with valve shaft, and the valve shaft is provided with the first valve plate, second is connected on first valve plate
Annular groove, is provided with the axis of guide for flexing outward in second annular groove, the axis of guide is coaxial before and after valve shaft；
5th centre bore of the air inlet rubber valve plate is assemblied in the second annular groove through the axis of guide, the 5th centre bore
Place is abutted on the first valve plate, and the transverse direction of the outlet side of the guide base of the main valve body is inserted in the rear end of the axis of guide
In pilot hole；On the axis of guide, the outlet spring one end is resisted against the air inlet rubber valve to the outlet spring housing
On plate, the other end is sleeved on the round ring boss at the edge of the pilot hole of support frame as described above, before the outlet valve plate
In the axis of guide insertion centre pilot hole at end, rubber o-ring, support frame as described above insertion main valve body are assembled on support frame as described above
Venthole and support frame as described above tightened with the internal screw-thread screw of venthole.
The quantity of the multiple fan air passage is individual, and the individual fan air passage is laid out in isosceles triangle.
The side surface of the round ring boss is provided with seal groove, and the outlet side of support frame as described above is provided with the second external screw thread, institute
The end face for stating the outlet side of support frame is provided with multiple fan-shaped recesses for communicating.
The startup automatic control switch includes that pull bar, epithelium, spring tray, nut, control spring, upper lid, encapsulation are enclosed, drawn
Button,
The side surface of the pull bar is provided with the first external screw thread and the second external screw thread, the middle part of the pull bar set the annular groove and
Second valve plate, the afterbody of the pull bar sets the cone；
The center of the rubbery membrana dermalis is provided with the second centre bore, and the edge of second centre bore is round ring boss, institute
The two ends for stating rubbery membrana dermalis are provided with the arc-shaped epithelium of expansion, and the edge of the rubbery membrana dermalis sets annular convex ring；
State spring tray and be provided with the 3rd centre bore, it is disk shape that the edge of the 3rd centre bore tilts；
The upper lid is straw hat shape, and the top of the upper lid is provided with the 4th centre bore, and the edge of upper lid is provided with compressed part；
The pull bar is arranged in the gas storage storehouse of main valve body, is entered for starting automatic switch mechanism under normal or abnormal condition
Row opens or closes action；
The rubbery membrana dermalis, produce for air pressure in gas storage storehouse and are turned on and off automatic controls power；
The upper lid is arranged on main valve body upper port；
The pull-button is connected with the partial threads for stretching out upper lid of pull bar.
The cone of the pull bar is stretched into the vertical pilot hole of main valve body, the second centre bore assembling of the rubbery membrana dermalis
In the annular groove of pull bar, and abut on the second valve plate, the annular convex ring of the rubbery membrana dermalis is embedded in the upper end of main valve body
In the first annular groove of mouth, the pallet is sleeved on the valve rod, and nut is set with the external screw thread of the pull bar, is used to press
Tight pallet and rubbery membrana dermalis, the control spring are sleeved on the pull bar, and described control spring one end is acted on pallet, and another
End is acted on lid, and the pull bar passes through the 4th centre bore of upper lid, the pull-button to screw togather fixation with the pull bar top.
The gas pipeline self-closing valve made using technical scheme, combustion gas is filled after being lifted up pull-button conducting source of the gas
Full gas storage storehouse, under the effect of the pressure epithelium expansion overcomes the elastic force of control spring to drive pull bar to be raised above, and the circular cone of pull bar exists
It is in opening that intake leaf is kept in rated range.When gas hose is damaged to be leaked, the gas loss in gas storage storehouse exceeds
Metered flow, internal pressure weaken, and pull bar is moved down under the election of control spring, and the circular cone of pull bar departs from the guiding of intake leaf
Bar, intake leaf blocks blast tube with the partition wall closure of main valve body in the presence of air inlet spring.When gas storage storehouse, internal pressure is less than
Still source of the gas is closed during rated pressure, when stopping the supple of gas or steam in the presence of spring is controlled.The skin when the internal pressure in gas storage storehouse is more than rated pressure
The dynamic pull bar of film strips continues to rise, and the cone of pull bar promotes the sealing surface closure closure blast tube of outlet valve plate and support frame,
So as to realize superpressure, damaged leakage, under-voltage, stopping the supple of gas or steam automatically cuts off source of the gas, ensures gas user safety.
Brief description of the drawings
Fig. 1 is assembly cross section structure diagram of the invention；
Fig. 2 is assembly configuration schematic diagram of the invention；
Fig. 3 is main valve body structural representation of the invention；
Fig. 4 is support frame structure schematic diagram of the invention；
Fig. 5 is the sectional view in support frame structure K-K faces of the invention；
Fig. 6 is rubber o-ring structural representation of the invention；
Fig. 7 is outlet spring structure schematic diagram of the invention；
Fig. 8 is outlet rubber valve meal structural representation of the invention；
Fig. 9 is air outlet valve plate structure schematic diagram of the invention；
Figure 10 is drawbar structure diagram of the invention；
Figure 11 is air inlet rubber valve plate structure schematic diagram of the invention；
Figure 12 is intake leaf structural representation of the invention；
Figure 13 is air inlet spring structure schematic diagram of the invention；
Figure 14 is spring tray structural representation of the invention；
Figure 15 is rubbery membrana dermalis structural representation of the invention；
Figure 16 is spring tray structural representation of the invention；
Figure 17 is nut structure schematic diagram of the invention；
Figure 18 is control spring structure schematic diagram of the invention；
Figure 19 is superstructure schematic diagram of the invention；
Figure 20 is encapsulation coil structures schematic diagram of the invention；
Figure 21 is pull-button structural representation of the invention；
Figure 22 is poly- four Buddhists gasket structure schematic diagram of the invention；
Figure 23 is spheroid switch structure diagram of the invention；
Figure 24 is hickey structural representation of the invention；
Figure 25 is dustproof network structure schematic diagram of the invention；
Figure 26 is clip spring structure schematic diagram in hole of the invention；
Figure 27 is stem structure schematic diagram of the invention；
Figure 28 is rubber o-ring structural representation of the invention；
Figure 29 is knob structure schematic diagram of the invention；
Figure 30 is screw structural schematic diagram of the invention；
In figure, 1, main valve body 2, support frame
3rd, rubber o-ring 4, outlet spring
5th, outlet rubber valve meal 6, outlet valve plate
7th, pull bar 8, air inlet rubber valve plate
9th, intake leaf 10, air inlet spring
11st, spring tray 12, rubbery membrana dermalis
13rd, spring tray 14, nut
15th, control spring 16, upper lid
17th, encapsulation circle 18, pull-button
19th, poly- four Buddhists sealing gasket 20, spheroid switch
21st, hickey 22, Air Filter
23rd, hole jump ring 24, valve rod
25th, rubber o-ring 26, knob
27th, screw 28, the first internal thread
29th, ball valve cavity 30, the first poly- four Buddhists sealing gasket fitting recess
31st, spring tray fitting recess 32, air inlet control cabinet
33rd, partition wall 34, inlet channel
35th, gas storage storehouse 36, guide base
37th, vertical pilot hole 38, laterally steering hole
39th, outlet passageway 40, the second internal thread
41st, the second external screw thread 42, first annular groove
43rd, cylinder 44, valve rod pilot hole
45th, sealing surface 46, pilot hole
47th, fan air passage 48, seal groove
49th, the second external screw thread 50, fan-shaped recess
51st, the 6th bulge loop 52, the 5th centre bore
53rd, valve shaft 54, the first valve plate
55th, the second annular groove 56, axis of guide
57th, the 5th external screw thread 58, the 4th external screw thread
59th, annular groove 60, the second valve plate
61st, cone 62, the second bulge loop
63rd, the first centre bore 64, axis of guide
65th, annular groove 66, the 3rd valve plate
67th, annular boss 68, annular groove
69th, the second centre bore 70, arc-shaped epithelium
71st, annular boss 72, the 3rd centre bore
73rd, the 4th centre bore 74, compression plate
75th, external screw thread 76, the second poly- four Buddhists sealing gasket fitting recess
77th, undercut 78, the first bulge loop
79th, the 3rd bulge loop 80, the 4th bulge loop
81st, the 5th bulge loop 82, round ring boss.
Specific embodiment
The present invention is specifically described below in conjunction with the accompanying drawings, as shown in Fig. 1 to Figure 30, a kind of gas pipeline self-closing valve,
Main valve body 1 including fuel gas ball valve, also including the first automatic switch mechanism, the second automatic switch mechanism and startup are automatically controlled out
Close, the first automatic switch mechanism is arranged in the air inlet of main valve body 1, for opening or because gaseous-pressure is less than rated pressure 1/
Air inlet is automatically switched off when 3；Second automatic switch mechanism is arranged on the air outlet of main valve body 1, is let out for gas hose breakage
Source of the gas can be automatically cut off when leakage, gaseous-pressure are beyond 3-5 times of rated pressure scope；The inlet end of main valve body 1 and fuel gas ball valve
Valve body is structure as a whole, and the inlet end connection gas pipeline of fuel gas ball valve is used for manual unlocking or closing, the outlet side of main valve body 1
Connection gas hose；Main valve body 1 includes the first internal thread 28, ball valve cavity 29, the first poly- four Buddhists sealing gasket fitting recess 30, spring
Pallet fitting recess 31, inlet channel 34, gas storage storehouse 35, guide base 36, vertical pilot hole 37, laterally steering hole 38, outlet lead to
Road 39, the second internal thread 40, the first annular groove 42 of the second external screw thread 41, upper port, cylinder 43, stem guiding hole 44, it is main
One end of valve body 1 is connected with ball valve cavity 29, and the other end of main valve body 1 is connected with outlet passageway 39, is set inside main valve body 1
There is a gas storage storehouse 35, the center in gas storage storehouse 35 is provided with guide base 36, guide base 36 is provided centrally with vertical pilot hole 37, horizontal
The inlet channel 34 with main valve body 1 and the coaxial insertion of outlet passageway 39, the ball valve cavity of the inlet end of main valve body 1 to pilot hole 38
The valve rod hole 44 of cylinder 43 is stretched out in the upper end of 29 insertion ball valve cavity 29, and the inlet end of main valve body 1 is provided with the first internal thread 28, main
The outlet side of valve body 1 is provided with the second internal thread 40 and the second external screw thread 41；First automatic switch mechanism include set gradually for
Block the air inlet control cabinet 32 of inlet end of main valve body 1, partition wall 33, air inlet rubber valve plate 8, intake leaf 9, air inlet spring 10,
Spring tray 11；Air inlet rubber valve plate 8 is provided with the first centre bore 63, and the periphery of the first centre bore 63 forms the first bulge loop 78,
The edge of air inlet rubber valve plate 8 is provided with the second bulge loop 62；Second bulge loop 62 is highly consistent with the upper surface of the first bulge loop 78；Air inlet
Valve plate 9 includes the 3rd valve plate 66, annular groove 65, the axis of guide 64, and the one side of the 3rd valve plate 66 sets annular groove 65, annular groove 65
Inside it is provided with the axis of guide 64 for stretching out；Spring tray 11 is provided with circular hole, and the edge of circular hole is provided with the 3rd bulge loop 79, spring
The edge of pallet 11 is provided with the 4th bulge loop 80, and the 3rd bulge loop 79 is highly consistent with the 4th bulge loop 80；Air inlet rubber valve plate 8
First centre bore 63 is assemblied in annular groove 65 through the axis of guide 64, and the first centre bore 63 is abutted on the 3rd valve plate 66, is oriented to
Axle 64 sequentially passes through the ball valve cavity 29 of main valve body 1, the first poly- four Buddhists sealing gasket fitting recess 30, spring tray fitting recess 31, enters
Gas control cabinet 32, and inserted in the laterally steering hole 38 of the guide base 36 of gas storage storehouse 35 by inlet channel 34, first poly- four
Air inlet spring 10 and spring tray 11, air inlet spring 10 are assembled successively in Buddhist sealing gasket fitting recess 30 and spring tray fitting recess 31
One end is acted in the annular convex ring 67 of intake leaf 9, and the other end is acted in the annular groove 68 of spring tray 11；Second certainly
Dynamic switching mechanism includes support frame 2, rubber o-ring 3, outlet spring 4, air inlet rubber valve plate 5, outlet valve plate 6, on support frame 2
It is provided with centre pilot hole 46 and multiple fan air passages 47, the front and rear surfaces of the insertion support frame 2 of centre pilot hole 46, support frame
The edge in 2 close centre pilot hole 46 is angularly provided with multiple fan air passages 47, support frame 2 with multiple sector gas
The surface of the homonymy of body passage 47 is provided with round ring boss 82, and the inlet end of support frame 2 is sealing ring surface 45, round ring boss
Less than the upper surface of sealing surface 45, the upper surface of fan air passage 47 is less than the upper surface of round ring boss, outlet for upper surface
Rubber valve plate 5 is provided with the 5th centre bore 52, and the edge of the 5th centre bore 52 forms the 5th bulge loop 81, air inlet rubber valve plate 5
Edge be provided with the 6th bulge loop 51, the 5th bulge loop 81 is highly consistent with the upper surface of the 6th bulge loop 51；Outlet valve plate 6 is provided with valve
Board shaft 53, valve shaft 53 is provided with the first valve plate 54, and the second annular groove 55, the second annular groove 55 are connected on the first valve plate 54
The axis of guide 56 for flexing outward inside is provided with, the axis of guide 56 is coaxial before and after valve shaft 53；5th center of air inlet rubber valve plate 1
Hole 52 is assemblied in the second annular groove 55 through the axis of guide 56, is abutted at the 5th centre bore 52 on first valve plate 54, is oriented to
In the laterally steering hole 38 of the outlet side of the guide base 36 of the rear end insertion main valve body 1 of axle 53；Outlet spring 4 is sleeved on guiding
On axle 56, the one end of outlet spring 4 is resisted against on air inlet rubber valve plate 5, and the other end is sleeved on the edge of the pilot hole 46 of support frame 2
Round ring boss 82 on, in the axis of guide 56 of the front end of outlet valve plate 6 insertion centre pilot hole 46, rubber is assembled on support frame 2
Glue O-ring 3, the venthole 39 and support frame 2 of the insertion main valve body 1 of support frame 2 are screwed togather with the internal thread 40 of venthole 39 and tightened；It is many
The quantity of individual fan air passage 47 is 3, and 3 fan air passages 47 are laid out in isosceles triangle；The side surface of round ring boss
Seal groove 48 is provided with, the outlet side of support frame 2 is provided with the second external screw thread 49, and the end face of the outlet side of support frame 2 is provided with multiple phases
Logical fan-shaped recess 50；Switch includes pull bar 7, epithelium 12, spring tray 13, nut 14, control spring 15, upper lid 16, encapsulation circle
17th, pull-button 18, the side surface of pull bar 7 is provided with the first external screw thread 57 and the second external screw thread 58, and the middle part of pull bar 7 sets annular groove 59
With the second valve plate 60, the afterbody setting cone 61 of pull bar 7；The center of rubbery membrana dermalis 12 is provided with the second centre bore 69, second
The edge of centre bore 69 is round ring boss, and the two ends of rubbery membrana dermalis 12 are provided with the arc-shaped epithelium 70 of expansion, rubbery membrana dermalis
12 edge sets annular convex ring 71；Spring tray 13 is provided with the 3rd centre bore 72, and the edge of the 3rd centre bore 72 is stuck up
It is disk shape to rise；Upper lid 16 is straw hat shape, and the top of upper lid 16 is provided with the 4th centre bore 73, and the edge of upper lid 16 is provided with compression
Portion 74；Pull bar 7 is arranged in the gas storage storehouse 35 of main valve body 1, for starting automatic switch mechanism under normal or abnormal condition
Carry out opening or closing action；Rubbery membrana dermalis 12, produce for air pressure in gas storage storehouse 35 and are turned on and off automatic controls power；On
Lid 16 is arranged on the upper port of main valve body 1；Pull-button 18 is connected with the partial threads for stretching out upper lid 16 of pull bar 7；The cone of pull bar 7
61 stretch into the vertical pilot hole 37 of main valve body 1, and the second centre bore 69 of rubbery membrana dermalis 12 is assemblied in the annular groove 59 of pull bar 7
It is interior, and abut on the second valve plate 60, the annular convex ring 71 of rubbery membrana dermalis 12 is embedded in the first annular of the upper port of main valve body 1
In groove 42, pallet 13 is sleeved on valve rod 7, and nut 14 is set with the external screw thread 58 of pull bar 7, is used to compress pallet 13 and rubber
Epithelium 12, control spring 15 is sleeved on pull bar 7, and control spring one end is acted on pallet 13, and the other end is acted on lid 15,
Through the 4th centre bore 73 of upper lid 16, pull-button 18 and the top of pull bar 7 screw togather fixation to pull bar 7.
The characteristics of the technical program is that the first automatic switch mechanism is arranged in the air inlet of main valve body 1, for open or
Air inlet is automatically switched off when being less than rated pressure 1/3 because of gaseous-pressure；Second automatic switch mechanism is arranged on the outlet of main valve body 1
Port, source of the gas can be automatically cut off during for the damaged leakage of gas hose, gaseous-pressure beyond 3-5 times of rated pressure scope；Main valve
The inlet end of body 1 is structure as a whole with the valve body of fuel gas ball valve, and the inlet end connection gas pipeline of fuel gas ball valve is used to beat manually
Open or close and close, the outlet side connection gas hose of main valve body 1.
In the technical program, the ball valve inlet end of wherein inlet end is connected with gas pipeline, outlet side and gas hose
Connection.The upper port being interconnected with main valve body 1 and the guide base 36 positioned at the center of gas storage storehouse 35, in guide base 36
The heart is provided with the inlet channel 34 of vertical pilot hole 37, laterally steering hole 38 with main valve body 1 and the coaxial insertion of outlet passageway 39,
The air inlet control cabinet 32 of main valve body 1 is provided with air inlet rubber valve plate 8, air inlet between the laterally steering hole 38 of guide base 36
Valve plate 9, air inlet spring 11, spring tray 12 are combined into the automatic switch mechanism for opening or closing air inlet, by main valve body 1
Outlet passageway 39 between the laterally steering hole 38 of guide base 36, be provided with support frame 2, rubber o-ring 3, outlet spring
4th, outlet rubber valve plate 5, outlet valve plate 6 are combined into the automatic switch mechanism for closing gas outlet, wherein by gas storage storehouse 35
Pull bar 7, rubbery membrana dermalis 12, spring tray 13, nut 14, control are equipped with the vertical pilot hole 37 of guide base 36 beyond supreme lid
Spring processed 15, upper lid 16, pull-button 18 are combined into the switch for starting automatic controls.
In the technical program, pull up the linkage pull rod 7 of pull-button 18 and rise, the extruding intake valve of cone 60 of pull bar 7
The automatic switch mechanism intake leaf 9 that plate 9 opens air inlet departs from the conducting source of the gas of partition wall 37, when in breakage leakage, gas storage storehouse
Rubbery membrana dermalis 12 bounce back when pressure is less than minimum pressure scope, and in the presence of spring is controlled, pull bar 7 declines the disengaging air inlet of cone 60
Valve plate 9, intake leaf 9 and the closed amputation source of the gas of partition wall 37.When gas storage storehouse internal pressure be more than rated pressure when rubbery membrana dermalis 12 after
Continuous to rise, the cone 60 of pull bar 7 promotes the closed amputation source of the gas of sealing surface 45 of outlet valve plate 6 and support frame 2.
In the technical program, inlet end automatic switch mechanism include:Set gradually for blocking the air inlet of main valve body 1
Air inlet rubber valve plate 8, intake leaf 9, air inlet spring 10, the spring tray 11 of the partition wall 37 of air inlet control cabinet 32 at end, air inlet
The linking annular groove 65 of 3rd valve plate 66 of valve plate 9, the axis of guide 64 is set beyond annular groove 65, air inlet rubber valve plate 8 center
Hole 63 is assemblied in after note is leaned against on the 3rd valve plate 66 in annular groove 65 through the axis of guide 64, then is directed to axle 64 through main valve body 1
Ball valve cavity 29, the first poly- four Buddhists sealing gasket fitting recess 30, spring tray fitting recess 31, air inlet control cabinet 32 it is logical by air inlet
Behind the laterally steering hole 38 of the guide base 36 of the insertion gas storage storehouse of road 34 35, then assembled by the poly- four Buddhists sealing gasket of ball valve cavity 29 first
The spring tray fitting recess 31 of groove 30 assembles the spring tray 11 of 10 spring tray of air inlet spring 11 and is inlaid in spring tray assembling successively
In groove 31, the one end of air inlet spring 10 act in the annular boss 67 of intake leaf 9, two one end act on spring tray 11
In annular groove 68.
In the technical program, support frame 2, the rubber o-ring 3, outlet for blocking the outlet side of main valve body 1 are set gradually
Spring 4, air inlet rubber valve plate 5, outlet valve plate 6, wherein, as shown in figure 4, the inlet end of support frame 2 plane be set to sealing
The centre pilot hole 46 of the support frame 2 of face 45 is run through before and after support frame 2, is cylindrical boss, cylinder beyond pilot hole 46
Boss is less than branch sealing surface 45, and the periphery of pilot hole 46 sets 3 fan airs logical 47 and is laid out in isosceles triangle, fan air passage
47 plane is less than the cylindrical boss of pilot hole 46, and the cylindrical of the adjacent inlet end sealing surface 45 of support frame 2 is provided with seal groove 48,
Outlet side is provided with the second external screw thread 49, and the end face of outlet side is three fan-shaped recesses 50 for communicating, outlet valve plate 6 valve shaft
53 are provided with the first valve plate 54 is connected the second annular groove 55, and the axis of guide 56 is coaxial before and after valve shaft 53.Air inlet rubber valve
5th centre bore 52 of plate 5 is assemblied in the second annular groove 55 through valve shaft 56 and abuts on the first valve plate 54, guiding
In the laterally steering hole 38 of the outlet side of rear end insertion main valve body 1 guide base 36 of axle 56, outlet spring 4 be sleeved on valve shaft
On 53, the one end of outlet spring 4 is resisted against on air inlet rubber valve plate 5, and the other end is sleeved on the convex of the periphery of pilot hole 46 of support frame 2
On platform, in the laterally steering hole 38 of the axis of guide 56 of the front end of outlet valve plate 6 insertion branch guide base 36, support frame 2 groove
By the venthole 39 of the cylindrical insertion main valve body 1 of support frame 2 and the internal thread 40 of venthole 39 after assembling rubber o-ring 3 in 47
Screw togather and tighten.
In the technical program, the startup automatic control switch in the gas storage storehouse 35 of main valve body 1 includes pull bar 7, epithelium 12, bullet
Spring bracket disk 13, nut 14, control spring 15, upper lid 16, encapsulation circle 17, pull-button 18, pull bar 7, the top of pull bar is provided with external screw thread
57th, external screw thread 58, middle setting annular groove 59, the second valve plate 60, the afterbody of pull bar 7 set cone 61, rubbery membrana dermalis 12
The periphery of centre bore 69 for cylindrical boss and launch arc-shaped epithelium 70, the periphery of arc-shaped epithelium 70 set annular boss
71, spring tray 13 the periphery of centre bore 72 tilt be disk shape, upper lid 16 be straw hat shape, during the top of upper lid 16 is provided with
Heart hole 73, it is compression plate 74 that straw hat shape launches plane, pull bar 7 cone 61 stretch into main valve body 1 guide base 36 it is perpendicular
To in pilot hole 37, the centre bore 69 of epithelium 12 is assemblied in the annular groove 59 of pull bar 7 and abuts on the second valve plate 60, epithelium 12
Annular boss 71 be embedded in the first annular groove 42 of the upper port of main valve body 1, pallet 13 is sleeved on the external screw thread 59 of valve rod 7
On, pallet 13 and epithelium 12 are compressed with nut 14, control spring 15 is sleeved on pull bar 7, and control spring one end is acted on pallet 13
The other end is acted on lid 15, and pull bar 7 is sleeved on upper lid 16, epithelium 12, master through the centre bore 73 of upper lid with encapsulation circle 17
Compression, sealing, bending, fixation in the upper port of valve body 1, upper lid 16, epithelium 12 and main valve body 1 are connected as one, pull-button
18 screw togather fixation with the external screw thread 57 for stretching out the top of 16 pull bar of upper lid 7.
In the technical program, ball valve switch includes poly- four Buddhists sealing gasket 19, the spheroid switch 20, Air Filter of hickey 21
22nd, hole jump ring 23, valve rod 24, rubber o-ring 25, knob 26, screw 27, hickey 21 be provided with the 5th external screw thread 75,
Second poly- four Buddhists sealing gasket fitting recess 76, undercut 75, ball valve it is identical with common assembly sequency, valve rod 24 be set with two
The valve rod that cylinder 43 is stretched out in the upper end of ball valve cavity 29 is inserted by the ball valve cavity 29 of the inlet end of main valve body 1 after rubber o-ring 25
Fastened with screw 27 after hole 44 and knob 26 are equipped, as shown in figure 1, poly- four Buddhists sealing gasket 19 insertion main valve body 1 first gather
Four Buddhist sealing gasket fitting recess 30, the boss of the recess correspondence valve rod 24 of spheroid switch 20 is assemblied in the centre of ball valve cavity 29, ball
Body switch 20 is resisted against on poly- four Buddhists sealing gasket 19, hickey 21 the second poly- four Buddhists sealing gasket fitting recess 76 be embedded in it is poly-
Four Buddhist sealing gaskets 19, the 5th external screw thread 75 and the internal thread 28 of the ball valve cavity inlet end of main valve body 1 of hickey 21 are screwed togather tightly
Gu, hickey 21 and unlike ordinary ball valve hickey 21 undercut 77 in successively be equipped with Air Filter 22, hole
Jump ring 23, is combined into a complete gas pipeline self-closing valve.
Self-closing valve in the technical program, the manually opened or closing motion of the ball valve for connecting as one, twists to open to the left
Valve is opened, is twisted to the right to close valve.
Self-closing valve in the technical program, button conducting source of the gas is lifted after opening manually-operated gate upwards, and rubbery membrana dermalis 12 expand
The cone 61 for driving pull bar 7 to rise pull bar 7 in normal state pushes the conducting source of the gas of intake leaf 9 open, keeps supply state.
Self-closing valve in the technical program, when there is damaged leakage, supply gas pressure when being less than rated range, the when of stopping the supple of gas or steam,
The retraction of rubbery membrana dermalis 12 drives pull bar 7 to decline in the presence of spring is controlled, and the cone 1 of bar 7 departs from intake leaf 9 in air inlet bullet
Intake leaf 9 and the closure closure blast tube of partition wall 33 of the air inlet control cabinet 32 of main valve body 1, close source of the gas in the presence of spring 10,
When ensureing damaged leakage, supply gas pressure when being less than rated range, the when of stopping the supple of gas or steam there is no accident.
Self-closing valve in the technical program, when occurring beyond more than 3 times of rated pressure, rubbery membrana dermalis 12 continue to expand band
Dynamic pull bar 7 continues to rise, and the cone 61 of bar 7 promotes outlet valve plate 6 to move forward the closure closure of sealing surface 45 with support frame 2
Blast tube, closes source of the gas, and accident does not occur when ensureing supply gas pressure superpressure.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
Some that to be made to some of which part variations embody principle of the invention, belong to protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of main valve body of gas pipeline self-closing valve, including fuel gas ball valve（1）, it is characterised in that also opened automatically including first
Shutting mechanism, the second automatic switch mechanism and startup automatic control switch,
First automatic switch mechanism is arranged on main valve body（1）Air inlet in, for open or because gaseous-pressure be less than volume
Air inlet is automatically switched off during constant-pressure 1/3；
Second automatic switch mechanism is arranged on main valve body（1）Air outlet, for the damaged leakage of gas hose, gas pressure
Source of the gas can be automatically cut off when power is beyond 3-5 times of rated pressure scope；
The main valve body（1）Inlet end be structure as a whole with the valve body of fuel gas ball valve, the connection combustion gas of the inlet end of fuel gas ball valve
Pipeline is used for manual unlocking or closing, main valve body（1）Outlet side connection gas hose.
2. a kind of gas pipeline self-closing valve according to claim 1, it is characterised in that the main valve body（1）Including first
Internal thread（28）, ball valve cavity（29）, the first poly- four Buddhists sealing gasket fitting recess（30）, spring tray fitting recess（31）, air inlet lead to
Road（34）, gas storage storehouse（35）, guide base（36）, vertical pilot hole（37）, laterally steering hole（38）, outlet passageway（39）,
Two internal threads（40）, the second external screw thread（41）, the first annular groove of upper port（42）, cylinder（43）, stem guiding hole（44）,
The main valve body（1）One end and ball valve cavity（29）It is connected, the main valve body（1）The other end and outlet passageway（39）Phase
Connection, the main valve body（1）Inside is provided with the gas storage storehouse（35）, the gas storage storehouse（35）Center be provided with guide base
（36）, the guide base 36 is provided centrally with vertical pilot hole（37）, laterally steering hole（38）Air inlet with main valve body 1 is led to
Road（34）And outlet passageway（39）Coaxial insertion, the main valve body（1）Inlet end ball valve cavity（29）Insertion ball valve cavity
（29）Cylinder is stretched out in upper end（43）Valve rod hole（44）, the main valve body（1）Inlet end be provided with the first internal thread（28）, institute
State main valve body（1）Outlet side be provided with second internal thread（40）With the second external screw thread（41）.
3. a kind of gas pipeline self-closing valve according to claim 1, it is characterised in that the first automatic switch mechanism bag
Include and set gradually for blocking main valve body（1）Inlet end air inlet control cabinet（32）, partition wall（33）, air inlet rubber valve plate（8）、
Intake leaf（9）, air inlet spring（10）, spring tray（11）；
The air inlet rubber valve plate（8）It is provided with the first centre bore（63）, first centre bore（63）Periphery formed first
Bulge loop（78）, the air inlet rubber valve plate（8）Edge is provided with the second bulge loop（62）；
Second bulge loop（62）With the first bulge loop（78）Upper surface is highly consistent；
Described intake leaf（9）Including the 3rd valve plate（66）, annular groove（65）, the axis of guide（64）, it is described
3rd valve plate（66）One side the annular groove is set（65）, the annular groove（65）Inside it is provided with the guiding for stretching out
Axle（64）；
The spring tray（11）Circular hole is provided with, the edge of the circular hole is provided with the 3rd bulge loop（79）, the spring tray
（11）Edge be provided with the 4th bulge loop（80）, the 3rd bulge loop（79）With the 4th bulge loop（80）It is highly consistent；It is described enter
Gas rubber valve plate（8）The first centre bore（63）Through the axis of guide（64）It is assemblied in annular groove（65）It is interior, first centre bore
（63）Abut in the 3rd valve plate（66）On, the axis of guide（64）Sequentially pass through the main valve body（1）Ball valve cavity（29）,
One poly- four Buddhists sealing gasket fitting recess（30）, spring tray fitting recess（31）, air inlet control cabinet（32）, and by inlet channel（34）
Insertion gas storage storehouse（35）Guide base（36）Laterally steering hole（38）It is interior, in the described first poly- four Buddhists sealing gasket fitting recess（30）
With spring tray fitting recess（31）Air inlet spring is inside assembled successively（10）And spring tray（11）, the air inlet spring（10）One end
Act on intake leaf（9）Annular convex ring（67）Interior, the other end acts on spring tray（11）Annular groove（68）It is interior.
4. a kind of gas pipeline self-closing valve according to claim 1, it is characterised in that the second automatic switch mechanism bag
Include support frame（2）, rubber o-ring（3）, outlet spring（4）, air inlet rubber valve plate（5）, outlet valve plate（6）,
Support frame as described above（2）It is provided with centre pilot hole（46）With multiple fan air passages（47）, the centre pilot hole
（46）Insertion support frame（2）Front and rear surfaces, support frame as described above（2）Close centre pilot hole（46）Edge angularly set
There are multiple fan air passages（47）, support frame as described above（2）With multiple fan air passages（47）The table of homonymy
Face is provided with round ring boss（82）, support frame as described above（2）Inlet end be sealing ring surface（45）, the round ring boss it is upper
Surface is less than sealing surface（45）Upper surface, the fan air passage（47）Upper surface less than round ring boss upper table
Face；
The outlet rubber valve plate（5）It is provided with the 5th centre bore（52）, the 5th centre bore（52）Edge form the
Five bulge loops（81）, the air inlet rubber valve plate（5）Edge be provided with the 6th
Bulge loop（51）, the 5th bulge loop（81）With the 6th bulge loop（51）Upper surface is highly consistent；
The outlet valve plate（6）It is provided with valve shaft（53）, the valve shaft（53）It is provided with the first valve plate（54）, described first
Valve plate（54）Upper linking annular groove（55）, the annular groove（55）Inside it is provided with the axis of guide for flexing outward（56）, the axis of guide
（56）Coaxially in valve shaft（53）It is front and rear；
The air inlet rubber valve plate（1）The 5th centre bore（52）Through the axis of guide（56）It is assemblied in annular groove（55）It is interior, it is described
5th centre bore（52）Place abuts in the first valve plate（54）On, the axis of guide（53）Rear end insert the main valve body（1）'s
The guide base（36）Outlet side laterally steering hole（38）It is interior；The outlet spring（4）It is sleeved on the axis of guide
（56）On, the outlet spring（4）One end is resisted against the air inlet rubber valve plate（5）On, the other end is sleeved on support frame as described above
（2）The pilot hole（46）Edge round ring boss（82）On, the outlet valve plate（6）Front end the axis of guide
（56）Insertion centre pilot hole（46）It is interior, support frame as described above（2）Upper assembling rubber o-ring（3）, support frame as described above（2）Insertion master
Valve body（1）Venthole（39）And support frame as described above（2）With venthole（39）Internal thread（40）Screw togather and tighten.
5. a kind of gas pipeline self-closing valve according to claim 4, it is characterised in that the multiple fan air passage
（47）Quantity be 3,3 fan air passages（47）It is laid out in isosceles triangle.
6. a kind of gas pipeline self-closing valve according to claim 5, it is characterised in that the side surface of the round ring boss
It is provided with seal groove（48）, support frame as described above（2）Outlet side be provided with the second external screw thread（49）, support frame as described above（2）Outlet side
End face be provided with multiple fan-shaped recesses for communicating（50）.
7. a kind of gas pipeline self-closing valve according to claim 1, it is characterised in that the startup automatic control switch bag
Include pull bar（7）, epithelium（12）, spring tray（13）, nut（14）, control spring（15）, upper lid（16）, encapsulation circle（17）, pull-button
（18）,
The pull bar（7）Side surface be provided with the first external screw thread（57）With the second external screw thread（58）, the pull bar（7）Middle part set
Put the annular groove（59）With second valve plate（60）, the pull bar（7）Afterbody the cone is set（61）；
The rubbery membrana dermalis（12）Center be provided with the second centre bore（69）, second centre bore（69）Edge for circle
Annular boss, the rubbery membrana dermalis（12）Two ends be provided with the arc-shaped epithelium of expansion（70）, the rubbery membrana dermalis（12）Side
Annular convex ring is set at edge（71）；
State spring tray（13）It is provided with the 3rd centre bore（72）, the 3rd centre bore（72）Edge tilt be dish type
Shape；
The upper lid（16）It is straw hat shape, the upper lid（16）Top be provided with the 4th centre bore（73）, upper lid（16）Edge
Place is provided with compressed part（74）；
The pull bar（7）It is arranged on main valve body（1）Gas storage storehouse（35）It is interior, it is automatic for starting under normal or abnormal condition
Switching mechanism carries out opening or closing action；
The rubbery membrana dermalis（12）, for gas storage storehouse（35）Interior air pressure is produced and is turned on and off automatic controls power；
The upper lid（16）It is arranged on main valve body（1）Upper port；
The pull-button（18）With pull bar（7）Stretch out Shang Gai（16）Partial threads connection.
8. gas pipeline self-closing valve according to claim 1, it is characterised in that the pull bar（7）Cone（61）Stretch
Enter main valve body（1）Vertical pilot hole（37）It is interior, the rubbery membrana dermalis（12）The second centre bore（69）It is assemblied in pull bar（7）'s
Annular groove（59）It is interior, and abut in the second valve plate（60）On, the rubbery membrana dermalis（12）Annular convex ring（71）It is embedded in main valve
Body（1）Upper port first annular groove（42）It is interior, the pallet（13）It is sleeved on the valve rod（7）On, the pull bar（7）
External screw thread（58）Place's suit nut（14）, it is used to compress pallet（13）With rubbery membrana dermalis（12）, the control spring（15）Suit
In the pull bar（7）On, described control spring one end acts on pallet（13）On, and the other end acts on lid（15）On, it is described
Pull bar（7）Through upper lid（16）The 4th centre bore（73）, the pull-button（18）With the pull bar（7）Top screws togather fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105497.7A CN106763954A (en) | 2017-02-26 | 2017-02-26 | A kind of gas pipeline self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105497.7A CN106763954A (en) | 2017-02-26 | 2017-02-26 | A kind of gas pipeline self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763954A true CN106763954A (en) | 2017-05-31 |
Family
ID=58959533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710105497.7A Pending CN106763954A (en) | 2017-02-26 | 2017-02-26 | A kind of gas pipeline self-closing valve |
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| Country | Link |
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| CN (1) | CN106763954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212042A (en) * | 2020-07-17 | 2021-01-12 | 光阳产业股份有限公司 | Automatic gas cutting device |
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