CN103603977A - Automatic-closing pressure-reducing fuel gas safety valve - Google Patents
Automatic-closing pressure-reducing fuel gas safety valve Download PDFInfo
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- CN103603977A CN103603977A CN201310586041.9A CN201310586041A CN103603977A CN 103603977 A CN103603977 A CN 103603977A CN 201310586041 A CN201310586041 A CN 201310586041A CN 103603977 A CN103603977 A CN 103603977A
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- closing
- self
- decompression
- air cavity
- temperature control
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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
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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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
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an automatic-closing pressure-reducing fuel gas safety valve, aiming to provide an improved automatic-closing pressure-reducing fuel gas safety valve. The automatic-closing pressure-reducing fuel gas safety valve comprises a body. The body is provided with a gas inlet end at the left end and a gas outlet end at the right end. The automatic-closing pressure-reducing fuel gas safety valve is characterized in that the body is divided into an automatic-closing gas cavity and a pressure-reducing cavity by a dividing layer in the body; a connecting hole communicated with the automatic-closing gas cavity and the pressure-reducing cavity is formed at the center of the dividing layer; the automatic-closing gas cavity is positioned above the pressure-reducing gas cavity; an automatic-closing device used for automatically detecting fuel gas pressure balance is arranged in the automatic-closing gas cavity; a pressure-reducing device used for adjusting fuel gas pressure is arranged in the pressure-reducing gas cavity; the gas outlet end of the body is connected with a temperature control switch used for sensing environmental temperature changes. The automatic-closing pressure-reducing fuel gas safety valve has automatic closing, pressure reducing and temperature-sensing-based closing functions, has the advantages of safety, convenience, practicability, firmness and durability, and is mainly applied to fuel gas safety control and connection.
Description
Technical field
The present invention relates to a kind of self-closing decompression safety valves for gas, relate in particular to a kind of self-closing decompression safety valves for gas.
Background technique
Gas valve, is roughly divided into self closing stop valve, reduction valve and security against fire valve at present, applicable to different operating conditions, but is all that various valve bodies are all to use separately conventionally; The gas valve type of using on liquified petroleum gas cylinder, the most frequently used is reduction valve, because the pressure ratio in liquified petroleum gas cylinder is higher, all needs gaseous-pressure to reduce pressure and just can make gas-fired equipment normally use in the time of normally used; Self closing stop valve can be monitored the combustion gas air pressure balance situation that two ends connect, in air pressure disequilibrium, in situation about changing, can automatically close, it is normally used on pipeline gas, because Consumer cooks with combustion gas daytime, and seldom use evening, so by day with evening pipeline gas pressure have a great difference, the pressure in evening is larger, and self closing stop valve itself does not carry out any processing to the pressure of pipeline gas, so in long-time use, the pressure of pipeline gas may can cause damage to self closing stop valve itself, and self closing stop valve was lost efficacy; Reduction valve, only processes ducted gaseous-pressure, when something unexpected happened, can not close voluntarily, cannot surprisingly effectively protect combustion gas; Security against fire valve can be catching fire, relevant combustion gas is closed during gas leakage, but cannot process gaseous-pressure, and the work that exposes for a long time also easily makes security against fire defective valve; And current gas valve is to use the mode of die casting to manufacture mostly, the valve body that this mode is manufactured out easily produces trachoma in inside, and in the situation that being subject to external force, easily producing and break, and produces unexpected.
Summary of the invention
Object of the present invention technical problem to be solved is that a kind of self-closing decompression safety valves for gas will be provided, it can effectively be integrated self closing stop valve, reduction valve and security against fire valve, it is conveniently worked under different working environments, make hitting of the more resistance to external force of valve body simultaneously, there is safe, convenient and practical, robust feature.
For achieving the above object, the technical solution used in the present invention is: a kind of self-closing decompression safety valves for gas, comprise main body, the left end of described main body is inlet end, the right-hand member of described main body is outlet side, it is characterized in that: the self-closing air cavity that described body interior is slit into this body portion by dividing layer and decompression air cavity, the central position of described dividing layer is provided with the attachment hole that is communicated with described self-closing air cavity and decompression air cavity; Described self-closing air cavity is communicated with described outlet side, and described decompression air cavity is communicated with described inlet end; Described self-closing air cavity is positioned at the top of described decompression air cavity; In described self-closing air cavity, be provided with for automatically detecting the self-closing device of combustion gas air pressure balance; In described decompression air cavity, be provided with for adjusting the decompressor of gaseous-pressure; The outlet side of described main body is connected with the temperature detect switch (TDS) for induced environment temperature variation; In the middle of described dividing layer, be provided with the circular fixed base raising up, the top upper surface of this fixed base is provided with draw-in groove; In described inlet end, be provided with gas-entered passageway, the right-hand member of this gas-entered passageway is connected with inlet hole; Described inlet hole right side is provided with connecting base, and this connecting base is located at the below of described dividing layer; Described self-closing air cavity is provided with the self-closing air cavity lid matching with self-closing air cavity; Described decompression air cavity is provided with the decompression air cavity lid matching with the air cavity that reduces pressure; The upper surface of described main body is provided with diaphragm groove one, and the lower surface of described main body is provided with diaphragm groove two; Described self-closing device comprises special-shaped part, bead, filter screen one, sealing gasket, self-closing sealing seat, self-closing connecting rod, diaphragm support plate one, self-closing diaphragm, self-closing spring, self-closing handle, described special-shaped part is located in described fixed base, and this special-shaped part lower end is located in described attachment hole; Described filter screen one is enclosed within described special-shaped part upper end; Described bead is located in described special-shaped part, and described self-closing connecting rod is positioned at bead top; Described self-closing sealing seat, diaphragm support plate one are located on described self-closing connecting rod with self-closing diaphragm, and described diaphragm support plate one is positioned at the below of self-closing diaphragm; The edge of described self-closing diaphragm and described diaphragm groove one match; Described sealing gasket is located in described draw-in groove, and sealing pad matches with described self-closing sealing seat; Described self-closing spring housing is located on described self-closing connecting rod, and described self-closing spring housing is between described self-closing diaphragm and self-closing air cavity lid; The upper end of described self-closing connecting rod is run through described self-closing air cavity lid and is connected with described self-closing handle; The lower end of described special-shaped part is provided with thread linkage section, and this thread linkage section is threaded with described dividing layer; In described thread linkage section, be provided with through hole; The upper end of described special-shaped part is provided with switch segments, in this switch segments, is provided with circular hole, and described switch segments side wall is provided with some air outlet holes for ventilating, and this air outlet hole and described circular hole are interconnected; Described through hole and circular hole are interconnected, and the joint of described circular hole and described through hole is circular-arc, and circular-arc bottom and the described bead of described circular hole match; The diameter of described circular hole is greater than the diameter of described bead, and the diameter of described through hole is less than the diameter of described bead; Described decompressor comprises reduced pressure sealing seat, decompression connecting rod, decompression diaphragm, diaphragm support plate two, relief spring, adjusting pressuring knob, the left end of described reduced pressure sealing seat is arranged on described connecting base, and the right-hand member of described reduced pressure sealing seat is connected with described decompression connecting rod; Described decompression diaphragm and diaphragm support plate two are located on described decompression connecting rod, and described diaphragm support plate is positioned at the below of described decompression diaphragm; The lower end of described decompression connecting rod is run through described decompression air cavity lid and is connected with described adjusting pressuring knob; Described relief spring is set on described decompression connecting rod, and described relief spring overlaps between described decompression diaphragm and described decompression air cavity lid; The edge of described decompression diaphragm and described diaphragm groove two match; Described temperature detect switch (TDS) comprises body, temperature control sealing seat, temperature control connecting rod, temperature control spring, temperature control sealing cover, temperature control handle and service cover, and the left end of described body is connected with described main body, and the right-hand member of described body is provided with air outlet adapter; In described body, be provided with outlet passageway, this outlet passageway is U font, and described outlet passageway comprises successively linkage section, U-shaped section and the outlet section mutually connecting, and described U-shaped section and outlet section joint are curved, and the lower end of temperature control sealing seat matches described in this joint; The lower end of described temperature control connecting rod is connected with described temperature control sealing seat, and the upper end of described temperature control connecting rod is run through described temperature control sealing cover and is connected with described temperature control handle; Described temperature control spring housing is located on described temperature control connecting rod, and described temperature control spring is between described temperature control sealing cover and described temperature control sealing seat; Described temperature control sealing cover and described body are tightly connected; Described service cover is positioned at described U-shaped section below, and described service cover and described body are tightly connected; Described body right-hand member is provided with air outlet adapter; Described temperature control spring is used the permanent magnetism memory alloy material of 55-65 ℃ of temperature-sensitive demagnetization distortion to manufacture and forms; The inlet end of described main body is connected with air input joint, and this air input joint right side is provided with filter screen two; On described inlet end, be arranged with the handwheel for being connected and fixed; Described main body, self-closing air cavity lid and decompression air cavity lid are used high temperature to forge jewelling material and manufacture and form.
This patent can be used on bottled gas, also can on pipeline gas, use.
The present invention has adopted above-mentioned technological scheme, overcome the deficiency of background technique, a kind of self-closing decompression safety valves for gas is provided, it can effectively be integrated self closing stop valve, reduction valve and security against fire valve, it is conveniently worked under different working environments, make hitting of the more resistance to external force of valve body simultaneously, there is safe, convenient and practical, robust feature.
Accompanying drawing explanation
Accompanying drawing 1 is plan view of the present invention;
Accompanying drawing 2 is the A-A sectional drawing of accompanying drawing 1;
Accompanying drawing 3 is main body plan view of the present invention;
Accompanying drawing 4 is main body worm's eye view of the present invention;
Accompanying drawing 5 is special-shaped part sectional structure chart of the present invention.
In figure: main body 1, self-closing device 2, decompressor 3, temperature detect switch (TDS) 4, inlet end 11, gas-entered passageway 11a, inlet hole 11b, air input joint 11c, filter screen two 11d, handwheel 11e, outlet side 12, self-closing air cavity 13, decompression air cavity 14, dividing layer 15, attachment hole 15a, fixed base 15b, draw-in groove 15c, connecting base 15d, self-closing air cavity lid 16, decompression air cavity lid 17, diaphragm groove 1, diaphragm groove 2 19, special-shaped part 21, thread linkage section 21a, through hole 21b, switch segments 21c, circular hole 21d, air outlet hole 21e, bead 22, filter screen 1, sealing gasket 24, self-closing sealing seat 25, self-closing connecting rod 26, diaphragm support plate one 27a, self-closing diaphragm 27, self-closing spring 28, self-closing handle 29, reduced pressure sealing seat 31, decompression connecting rod 32, decompression diaphragm 33, diaphragm support plate 2 34, relief spring 35, adjusting pressuring knob 36, body 41, outlet passageway 41a, linkage section 41b, U-shaped section 41C, outlet section 41d, air outlet adapter 41e, temperature control sealing seat 42, temperature control connecting rod 43, temperature control spring 44, temperature control sealing cover 45, temperature control handle 46, service cover 47.
Embodiment
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is further described, make technological scheme of the present invention and beneficial effect thereof clearer, clear and definite.
Referring to accompanying drawing 1 to 5, the present invention includes main body 1, the left end of described main body 1 is inlet end 11, the right-hand member of described main body 1 is outlet side 12, it is characterized in that: the self-closing air cavity 13 that described main body 1 inside is divided into this main body 1 by dividing layer 15 and decompression air cavity 14, the central position of described dividing layer 15 is provided with the attachment hole 15a that is communicated with described self-closing air cavity 13 and decompression air cavity 14; Described self-closing air cavity 13 is communicated with described outlet side 12, and described decompression air cavity 14 is communicated with described inlet end 11; Described self-closing air cavity 13 is positioned at the top of described decompression air cavity 14; In described self-closing air cavity 13, be provided with for automatically detecting the self-closing device 2 of combustion gas air pressure balance; In described decompression air cavity 14, be provided with for adjusting the decompressor 3 of gaseous-pressure; The outlet side 12 of described main body 1 is connected with the temperature detect switch (TDS) 4 for induced environment temperature variation; In the middle of described dividing layer 15, be provided with the circular fixed base 15b raising up, the top upper surface of this fixed base 15b is provided with draw-in groove 15c; In described inlet end 11, be provided with gas-entered passageway 11a, the right-hand member of this gas-entered passageway 11a is connected with inlet hole 11b; Described inlet hole 11b right side is provided with connecting base 15d, and this connecting base 15d is located at the below of described dividing layer 15; Described self-closing air cavity 13 is provided with the self-closing air cavity lid 16 matching with self-closing air cavity 13; Described decompression air cavity 14 is provided with the decompression air cavity lid 17 matching with the air cavity 14 that reduces pressure; The upper surface of described main body 1 is provided with diaphragm groove 1, and the lower surface of described main body 1 is provided with diaphragm groove 2 19; Described self-closing device 2 comprises special-shaped part 21, bead 22, filter screen 1, sealing gasket 24, self-closing sealing seat 25, self-closing connecting rod 26, diaphragm support plate one 27a, self-closing diaphragm 27, self-closing spring 28 and self-closing handle 29, described special-shaped part 21 is located in described fixed base 15b, and these special-shaped part 21 lower ends are located in described attachment hole 15a; Described filter screen 1 is enclosed within described special-shaped part 21 upper ends; Described bead 22 is located in described special-shaped part 21, and described self-closing connecting rod 26 is positioned at bead 22 tops; Described self-closing sealing seat 25, diaphragm support plate one 27a and self-closing diaphragm 27 are located on described self-closing connecting rod 26, and described diaphragm support plate one 27a is positioned at the below of self-closing diaphragm 27; The edge of described self-closing diaphragm 27 and described diaphragm groove 1 match; Described sealing gasket 24 is located in described draw-in groove 15c, and sealing pad 24 matches with described self-closing sealing seat 25; Described self-closing spring 28 is set on described self-closing connecting rod 26, and described self-closing spring 28 overlaps between described self-closing diaphragm 27 and self-closing air cavity lid 16; The upper end of described self-closing connecting rod 26 is run through described self-closing air cavity lid 16 and is connected with described self-closing handle 29; The lower end of described special-shaped part 21 is provided with thread linkage section 21a, and this thread linkage section 21a is threaded with described dividing layer 15; In described thread linkage section 21a, be provided with through hole 21b; The upper end of described special-shaped part 21 is provided with switch segments 21c, in this switch segments 21c, is provided with circular hole 21d, and described switch segments 21c side wall is provided with some air outlet hole 21e for ventilating, and this air outlet hole 21e and described circular hole 21d are interconnected; Described through hole 21b and circular hole 21d are interconnected, and the joint of described circular hole 21d and described through hole 21b is circular-arc, and circular-arc bottom and the described bead 22 of described circular hole 21d match; The diameter of described circular hole 21d is greater than the diameter of described bead 22, and the diameter of described through hole 21b is less than the diameter of described bead 22; Described decompressor 3 comprises reduced pressure sealing seat 31, decompression connecting rod 32, decompression diaphragm 33, diaphragm support plate 2 34, relief spring 35 and adjusting pressuring knob 36, it is upper that the left end of described reduced pressure sealing seat 31 is arranged on described connecting base 15d, and the right-hand member of described reduced pressure sealing seat 31 is connected with described decompression connecting rod 32; Described decompression diaphragm 33 is located on described decompression connecting rod 32 with diaphragm support plate 2 34, and described diaphragm support plate is positioned at the below of described decompression diaphragm 33; The lower end of described decompression connecting rod 32 is run through described decompression air cavity lid 17 and is connected with described adjusting pressuring knob 36; Described relief spring 35 is set on described decompression connecting rod 32, and described relief spring 35 overlaps between described decompression diaphragm 33 and described decompression air cavity lid 17; The edge of described decompression diaphragm 33 and described diaphragm groove 2 19 match; Described temperature detect switch (TDS) 4 comprises body 41, temperature control sealing seat 42, temperature control connecting rod 43, temperature control spring 44, temperature control sealing cover 45, temperature control handle 46 and service cover 47, the left end of described body 41 is connected with described main body 1, and the right-hand member of described body 41 is provided with air outlet adapter; In described body 41, be provided with outlet passageway 41a, this outlet passageway 41a is U font, described outlet passageway 41a comprises linkage section 41b, U-shaped section 41C and the outlet section 41d connecting successively, described U-shaped section 41C and outlet section 41d joint are curved, and the lower end of temperature control sealing seat 42 matches described in this joint; The lower end of described temperature control connecting rod 43 is connected with described temperature control sealing seat 42, and the upper end of described temperature control connecting rod 43 is run through described temperature control sealing cover 45 and is connected with described temperature control handle 46; Described temperature control spring 44 is set on described temperature control connecting rod 43, and described temperature control spring 44 is between described temperature control sealing cover 45 and described temperature control sealing seat 42; Described temperature control sealing cover 45 is tightly connected with described body 41; Described service cover 47 is positioned at described U-shaped section 41C below, and described service cover 47 is tightly connected with described body 41; Described body 41 right-hand members are provided with air outlet adapter 41e; Described temperature control spring 44 is used the permanent magnetism memory alloy material of 55-65 ℃ of temperature-sensitive demagnetization distortion to manufacture and forms; The inlet end 11 of described main body 1 is connected with air input joint 11c, and this air input joint 11c right side is provided with filter screen two 11d; On described inlet end 11, be arranged with the handwheel 11e for being connected and fixed; Described main body 1, self-closing air cavity lid 16 and decompression air cavity lid 17 are used high temperature to forge jewelling material and manufacture and form.
In the time of work, valve body is connected on fuel gas source or gas pipeline, and combustion gas enters in decompression air cavity 14 through inlet hole 11b from the gas-entered passageway 11a of inlet end 11, by adjusting pressuring knob 36, can adjust the combustion gas air pressure in decompression air cavity 14; Combustion gas enters into the through hole 21b of special-shaped part 21, portable self-closing handle 29 drives self-closing connecting rod 26 to move up, bead 22 moves up under the pressure of combustion gas, combustion gas out enters into self-closing air cavity 13 from air outlet hole 21e, the 12 outlet passageway 41a that enter into temperature detect switch (TDS) 4 from outlet side, with portable temperature control handle 46, thereby drive temperature control sealing seats 42 to move up by temperature control connecting rod 43 again, U-shaped section 41C is communicated with outlet section 41d, and combustion gas from outlet section 41d out; When the imbalance of pressure of inlet end 11 and outlet side 12, under the effect of self-closing spring 28 and self-closing diaphragm 27, self-closing connecting rod 26 is pushed away downwards, bead 22 is pushed away to cut off circular hole 21d downwards and be connected with through hole 21b, thereby realize self-closing function; When the temperature of environment of living in reaches the value that temperature control spring 44 sets, the 44 losss of excitation distortion of temperature control spring, push away to cut off being connected of U-shaped section 41C and outlet section 41d downwards by temperature control sealing seat 42.
By the description of above-mentioned structure and principle; person of ordinary skill in the field is to be understood that; the present invention is not limited to above-mentioned embodiment, adopts the improvement of techniques well known and substitute all to drop on protection scope of the present invention on basis of the present invention, should be limited by each claim.
Claims (9)
1. a self-closing decompression safety valves for gas, comprise main body, the left end of described main body is inlet end, the right-hand member of described main body is outlet side, it is characterized in that: the self-closing air cavity that described body interior is slit into this body portion by dividing layer and decompression air cavity, the central position of described dividing layer is provided with the attachment hole that is communicated with described self-closing air cavity and decompression air cavity; Described self-closing air cavity is communicated with described outlet side, and described decompression air cavity is communicated with described inlet end; Described self-closing air cavity is positioned at the top of described decompression air cavity; In described self-closing air cavity, be provided with for automatically detecting the self-closing device of combustion gas air pressure balance; In described decompression air cavity, be provided with for adjusting the decompressor of gaseous-pressure; The outlet side of described main body is connected with the temperature detect switch (TDS) for induced environment temperature variation.
2. self-closing decompression safety valves for gas according to claim 1, is characterized in that: in the middle of described dividing layer, be provided with the circular fixed base raising up, the top upper surface of this fixed base is provided with draw-in groove; In described inlet end, be provided with gas-entered passageway, the right-hand member of this gas-entered passageway is connected with inlet hole; Described inlet hole right side is provided with connecting base, and this connecting base is located at the below of described dividing layer; Described self-closing air cavity is provided with the self-closing air cavity lid matching with self-closing air cavity; Described decompression air cavity is provided with the decompression air cavity lid matching with the air cavity that reduces pressure; The upper surface of described main body is provided with diaphragm groove one, and the lower surface of described main body is provided with diaphragm groove two.
3. self-closing decompression safety valves for gas according to claim 2, it is characterized in that: described self-closing device comprises special-shaped part, bead, filter screen one, sealing gasket, self-closing sealing seat, self-closing connecting rod, diaphragm support plate one, self-closing diaphragm, self-closing spring, self-closing handle, described special-shaped part is located in described fixed base, and this special-shaped part lower end is located in described attachment hole; Described filter screen one is enclosed within described special-shaped part upper end; Described bead is located in described special-shaped part, and described self-closing connecting rod is positioned at bead top; Described self-closing sealing seat, diaphragm support plate one are located on described self-closing connecting rod with self-closing diaphragm, and described diaphragm support plate one is positioned at the below of self-closing diaphragm; The edge of described self-closing diaphragm and described diaphragm groove one match; Described sealing gasket is located in described draw-in groove, and sealing pad matches with described self-closing sealing seat; Described self-closing spring housing is located on described self-closing connecting rod, and described self-closing spring housing is between described self-closing diaphragm and self-closing air cavity lid; The upper end of described self-closing connecting rod is run through described self-closing air cavity lid and is connected with described self-closing handle.
4. self-closing decompression safety valves for gas according to claim 3, is characterized in that: the lower end of described special-shaped part is provided with thread linkage section, and this thread linkage section is threaded with described dividing layer; In described thread linkage section, be provided with through hole; The upper end of described special-shaped part is provided with switch segments, in this switch segments, is provided with circular hole, and described switch segments side wall is provided with some air outlet holes for ventilating, and this air outlet hole and described circular hole are interconnected; Described through hole and circular hole are interconnected, and the joint of described circular hole and described through hole is circular-arc, and circular-arc bottom and the described bead of described circular hole match; The diameter of described circular hole is greater than the diameter of described bead, and the diameter of described through hole is less than the diameter of described bead.
5. self-closing decompression safety valves for gas according to claim 2, it is characterized in that: described decompressor comprises reduced pressure sealing seat, decompression connecting rod, decompression diaphragm, diaphragm support plate two, relief spring, adjusting pressuring knob, the left end of described reduced pressure sealing seat is arranged on described connecting base, and the right-hand member of described reduced pressure sealing seat is connected with described decompression connecting rod; Described decompression diaphragm and diaphragm support plate two are located on described decompression connecting rod, and described diaphragm support plate is positioned at the below of described decompression diaphragm; The lower end of described decompression connecting rod is run through described decompression air cavity lid and is connected with described adjusting pressuring knob; Described relief spring is set on described decompression connecting rod, and described relief spring overlaps between described decompression diaphragm and described decompression air cavity lid; The edge of described decompression diaphragm and described diaphragm groove two match.
6. self-closing decompression safety valves for gas according to claim 2, it is characterized in that: described temperature detect switch (TDS) comprises body, temperature control sealing seat, temperature control connecting rod, temperature control spring, temperature control sealing cover, temperature control handle and service cover, the left end of described body is connected with described main body, and the right-hand member of described body is provided with air outlet adapter; In described body, be provided with outlet passageway, this outlet passageway is U font, and described outlet passageway comprises successively linkage section, U-shaped section and the outlet section mutually connecting, and described U-shaped section and outlet section joint are curved, and the lower end of temperature control sealing seat matches described in this joint; The lower end of described temperature control connecting rod is connected with described temperature control sealing seat, and the upper end of described temperature control connecting rod is run through described temperature control sealing cover and is connected with described temperature control handle; Described temperature control spring housing is located on described temperature control connecting rod, and described temperature control spring is between described temperature control sealing cover and described temperature control sealing seat; Described temperature control sealing cover and described body are tightly connected; Described service cover is positioned at described U-shaped section below, and described service cover and described body are tightly connected; Described body right-hand member is provided with air outlet adapter.
7. self-closing decompression safety valves for gas according to claim 6, is characterized in that: described temperature control spring is used the permanent magnetism memory alloy material of 55-65 ℃ of temperature-sensitive demagnetization distortion to manufacture and forms.
8. self-closing decompression safety valves for gas according to claim 1, is characterized in that: the inlet end of described main body is connected with air input joint, and this air input joint right side is provided with filter screen two; On described inlet end, be arranged with the handwheel for being connected and fixed.
9. according to the self-closing decompression safety valves for gas described in any one in claim 1-8, it is characterized in that: described main body, self-closing air cavity lid and decompression air cavity lid are used high temperature to forge jewelling material and manufacture and form.
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| CN201310586041.9A CN103603977B (en) | 2013-11-19 | 2013-11-19 | A kind of self-closing decompression safety valves for gas |
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| CN201310586041.9A CN103603977B (en) | 2013-11-19 | 2013-11-19 | A kind of self-closing decompression safety valves for gas |
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| CN103603977A true CN103603977A (en) | 2014-02-26 |
| CN103603977B CN103603977B (en) | 2015-12-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605250A (en) * | 2016-01-14 | 2016-05-25 | 李少锋 | Energy-saving gas pressure increasing valve |
| CN107883029A (en) * | 2017-11-06 | 2018-04-06 | 肇庆市大旺大庆炉具制品企业有限公司 | A kind of pressure-reducing valve and gas-fired equipment |
| CN111795185A (en) * | 2020-07-14 | 2020-10-20 | 浙江大学 | Gas safety valve with under-pressure protection and over-temperature and over-flow cut-off functions and method thereof |
| CN112958705A (en) * | 2021-03-24 | 2021-06-15 | 江苏佳德安燃气设备科技有限公司 | Edge folding locking device and edge folding locking method |
| CN107883029B (en) * | 2017-11-06 | 2024-07-12 | 肇庆市大旺大庆炉具制品企业有限公司 | Gas equipment |
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| CN203641606U (en) * | 2013-11-19 | 2014-06-11 | 李少锋 | Self-closing and pressure-reducing gas safety valve |
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| GB2225089A (en) * | 1988-10-05 | 1990-05-23 | Gimeg Uk Ltd | Pressure switch safety valve |
| US5209253A (en) * | 1991-05-06 | 1993-05-11 | Taylor Julian S | Emergency shutoff valve and regulator assembly |
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| CN2602238Y (en) * | 2003-02-12 | 2004-02-04 | 李银霞 | Multi-function combustion gas safety valve |
| CN202545919U (en) * | 2012-04-12 | 2012-11-21 | 成都华泰燃气设备有限公司 | Large-differential-pressure two-stage gas pressure regulator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605250A (en) * | 2016-01-14 | 2016-05-25 | 李少锋 | Energy-saving gas pressure increasing valve |
| CN107883029A (en) * | 2017-11-06 | 2018-04-06 | 肇庆市大旺大庆炉具制品企业有限公司 | A kind of pressure-reducing valve and gas-fired equipment |
| CN107883029B (en) * | 2017-11-06 | 2024-07-12 | 肇庆市大旺大庆炉具制品企业有限公司 | Gas equipment |
| CN111795185A (en) * | 2020-07-14 | 2020-10-20 | 浙江大学 | Gas safety valve with under-pressure protection and over-temperature and over-flow cut-off functions and method thereof |
| CN112958705A (en) * | 2021-03-24 | 2021-06-15 | 江苏佳德安燃气设备科技有限公司 | Edge folding locking device and edge folding locking method |
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|---|---|
| CN103603977B (en) | 2015-12-02 |
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