CN109442047B - Fuel gas control stop valve - Google Patents
Fuel gas control stop valve Download PDFInfo
- Publication number
- CN109442047B CN109442047B CN201811556721.5A CN201811556721A CN109442047B CN 109442047 B CN109442047 B CN 109442047B CN 201811556721 A CN201811556721 A CN 201811556721A CN 109442047 B CN109442047 B CN 109442047B
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- cavity
- piston
- hole
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002737 fuel gas Substances 0.000 title claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 19
- 230000013011 mating Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
-
- 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
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Safety Valves (AREA)
Abstract
The invention aims to provide a fuel gas control cut-off valve, which solves the problem that the oil pressure of a fuel system with too high fuel pressure cannot be regulated in the prior art. The fuel gas control cut-off valve of the invention, comprising: the valve seat comprises an oil inlet hole, an oil outlet hole and a first mounting hole which are communicated with each other; the valve body is internally provided with a cavity, and an air inlet channel and a second mounting hole which are formed from the outer surface of the valve body and are communicated with the cavity; the piston is arranged in the cavity and is partially inserted into the second mounting hole, and a first gap for air in the air inlet channel to enter is formed between the piston and the first cavity wall of the cavity; a pressure regulating spring disposed between the second cavity wall of the cavity and the piston; the valve core is inserted into the oil inlet hole and the first mounting hole and is arranged opposite to the piston.
Description
Technical Field
The invention relates to the technical field of diesel engine fuel injection systems, in particular to a fuel gas control cut-off valve.
Background
The cut-off valve is one of the security systems of the diesel engine fuel system, has the characteristics of simple structure, sensitive response, reliable action and the like, and is widely applied to the diesel engine fuel system industry. The general cut-off valve is used in the use environment with low system pressure, while the cut-off valve with system pressure exceeding 100MPa is not more, and the structure is relatively complex and the cost is high.
Disclosure of Invention
The invention aims to provide a fuel gas control cut-off valve, which solves the problem that the oil pressure of a fuel system with too high fuel pressure cannot be regulated in the prior art.
The technical scheme of the invention is as follows:
the invention provides a fuel gas control cut-off valve, comprising:
the valve seat comprises an oil inlet hole, an oil outlet hole and a first mounting hole which are communicated with each other;
the valve body is internally provided with a cavity, and an air inlet channel and a second mounting hole which are formed from the outer surface of the valve body and are communicated with the cavity;
the piston is arranged in the cavity and is partially inserted into the second mounting hole, and a first gap for air in the air inlet channel to enter is formed between the piston and the first cavity wall of the cavity;
a pressure regulating spring disposed between the second cavity wall of the cavity and the piston;
the valve core is inserted into the oil inlet hole and the first mounting hole and is arranged opposite to the piston;
when gas enters the gas inlet channel, the piston moves upwards under the action of the gas, the valve core moves into the second mounting hole under the action of oil inlet pressure, the oil inlet hole and the oil outlet hole are communicated, and fuel in the oil inlet hole flows outwards through the oil outlet hole;
when gas does not enter the air inlet channel, the piston moves downwards under the action of the rebound force of the pressure regulating spring, the piston pushes the valve core to move towards the first mounting hole, the oil inlet hole and the oil outlet hole are blocked, and outflow of fuel in the oil inlet hole is blocked.
Preferably, a cavity is arranged among the oil inlet hole, the oil outlet hole and the first mounting hole, and a first conical surface is arranged at the position where the oil inlet hole and the cavity are communicated; the valve core includes:
a first mating portion having a second tapered surface forming a tapered seal with the first tapered surface;
the first matching part is connected with the first matching part;
when the valve core moves into the second mounting hole under the action of oil inlet pressure, the first matching part enters into the first mounting hole, and a second gap is formed between the first conical surface and the second conical surface, so that fuel in the oil inlet hole flows to the oil outlet hole after passing through the second gap and the cavity.
Preferably, the outer surface of the valve body is also provided with an air outlet channel communicated with the cavity, and air between the piston and the side wall of the other side of the cavity is discharged outwards through the air outlet channel.
Preferably, the valve body comprises:
the valve body is provided with a second mounting hole, a third mounting hole communicated with the second mounting hole is further formed in the valve body, and the piston is inserted into the second mounting hole from the third mounting hole;
the pressing plate is arranged on the valve body, a fourth mounting hole opposite to the third mounting hole is formed in the end face, facing the valve body, of the pressing plate, and the third mounting hole and the fourth mounting hole form the cavity;
one end of the pressure regulating spring is fixed on the piston, and the other end of the pressure regulating spring is fixed on the hole wall of the fourth mounting hole.
Preferably, a third gap for fuel to pass through is formed between the valve seat and the valve body, and an axial groove communicated with the third gap is formed on the outer surface of the valve seat.
Preferably, a first sealing ring and a second sealing ring are sleeved on the piston, the first sealing ring is matched with the cavity, and the second sealing ring is matched with the second mounting hole.
Preferably, a third sealing ring is sleeved on the outer surface of the valve body along the axial direction.
Preferably, the pressing plate is in threaded connection with the valve body.
The beneficial effects of the invention are as follows:
according to the scheme, the external sealing part at one side of the air inlet is opened manually, so that external compressed air enters the valve body to push the piston to move, the valve core is pushed to move under the action of fuel pressure, the fuel inlet and the fuel outlet are communicated, and the fuel pressure relief is realized. When the air does not enter the air at one side of the air inlet, the piston is pushed to move downwards under the action of the rebound force of the pressure regulating spring, and the piston pushes the valve core to move downwards, so that the valve core moves back to a state of blocking the communication between the oil inlet and the oil outlet, and the fuel cannot enter the oil outlet again.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a second schematic diagram of the structure of the present invention;
FIG. 3 is a block diagram of a valve seat of the present invention;
FIG. 4 is a block diagram of a valve cartridge of the present invention;
FIG. 5 is a schematic illustration of the valve seat and valve core cooperation of the present invention;
reference numerals illustrate 1- -valve seat; 11- -an oil inlet hole; 12- -an oil outlet hole; 13—a first mounting hole; 21- -an inlet channel; 22- -a second mounting hole; 3- -a piston; 31—a first gap; 4- -a pressure regulating spring; 5-valve core; 51—a first mating portion; 52—a second mating portion; 23-gas outlet channel; 24- -a valve body; 25—a third mounting hole; 26—a platen; 27-fourth mounting holes; 14—a third gap; 15- -an axial slot; 32- -a first seal ring; 33- -a second seal ring; 28- -a third seal ring; 261- -an air inlet; 262- -a bolt; 29- -fourth seal ring; 111—a first conical surface; 511-a second conical surface; 16- -a cavity; 41-protrusions.
Detailed Description
Referring to fig. 1 and 2, the present invention provides a fuel gas control shut-off valve, comprising: a valve seat 1 including an oil inlet hole 11, an oil outlet hole 12, and a first mounting hole 13 which are communicated with each other; a valve body, the inside of which is provided with a cavity, and an air inlet channel 21 and a second mounting hole 22 which are opened from the outer surface of the valve body and are communicated with the cavity; a piston 3 disposed in the cavity and partially inserted into the second mounting hole 22, wherein a first gap 31 for air in the air intake duct 21 to enter is provided between the piston 3 and a first wall of the cavity; a pressure regulating spring 4 disposed between the second chamber wall of the cavity and the piston 3; a valve core 5 inserted into the oil inlet hole 11 and the first mounting hole 13 and disposed opposite to the piston 3; when gas enters the air inlet channel 21, the piston 3 moves upwards under the action of the gas, the valve core 5 moves into the second mounting hole 22 under the action of oil inlet pressure, the oil inlet hole 11 and the oil outlet hole 12 are communicated, and fuel in the oil inlet hole 11 flows out through the oil outlet hole 12; when no gas enters the air inlet channel 21, the piston 3 moves downwards under the action of the rebound force of the pressure regulating spring 4, the piston 3 pushes the valve core 5 to move into the first mounting hole 13, the oil inlet hole 11 and the oil outlet hole 12 are blocked, and the outflow of fuel in the oil inlet hole 11 is blocked.
Wherein, for the valve body, it specifically includes: the valve body 24, the second mounting hole 22 is disposed on the valve body 24, a third mounting hole 25 that communicates with the second mounting hole 22 is further disposed on the valve body 24, and the piston 3 is inserted into the second mounting hole 22 from the third mounting hole 25; a pressing plate 26 mounted on the valve body 24, wherein a fourth mounting hole 27 opposite to the third mounting hole 25 is arranged on the end surface of the pressing plate 26 facing the valve body 24, and the third mounting hole 25 and the fourth mounting hole 27 form the cavity; one end of the pressure regulating spring 4 is fixed on the piston 3, and the other end is fixed on the wall of the fourth mounting hole 27.
Specifically, the fourth mounting hole 27 is a stepped hole, a protrusion 41 is arranged on one side, facing the fourth mounting hole 27, of the pressure regulating spring 4, the pressure regulating spring 4 is positioned through the protrusion 41 and a bottom hole of the fourth mounting hole 27, and therefore left-right shaking of the pressure regulating spring 4 in the shrinkage process can be prevented, and cutting-off of the pressure regulating spring 4 is avoided.
As shown in fig. 2, an air inlet 261 is provided in the pressure plate 26, which communicates with the air inlet 21. The air inlet 261 is communicated with the outside, air in the outside (the air is compressed air with pressure, such as compressed air, the pressure of the air is between 0.3 and 0.5 Mpa) enters the air inlet 21 through the air inlet 261, the air entering the air inlet 21 reaches the lower surface of the piston 3 through the first gap 31, the piston 3 moves upwards (vertically upwards in fig. 2) under the action of the air, a gap for the valve core 5 to move upwards is formed between the piston 3 and the pressing plate 26, and when the fuel pressure is higher than a preset pressure value P, the valve core 5 is pushed to move upwards under the action of the fuel pressure (vertically upwards in fig. 2). After the valve core 5 moves upwards, the oil inlet hole 11 and the oil outlet hole 12 are in a conducting state, at this time, fuel in the fuel system flows into the oil outlet hole 12 through the oil inlet hole 11, is discharged outwards through the oil outlet hole 12 and is decompressed, and the effect of reducing the fuel pressure of the fuel system is achieved.
When the gas is not introduced into the side of the gas inlet 261, the piston 3 is pushed to move downward (move in the vertical downward direction in fig. 2) by the rebound force of the pressure regulating spring 4, and the piston 3 pushes the valve core 5 to move downward (move in the vertical downward direction in fig. 2), so that the valve core 5 moves back to a state of blocking the communication between the oil inlet 11 and the oil outlet 12, and the fuel cannot enter the oil outlet 12.
Specifically, as shown in fig. 4 and 5, a cavity 16 is formed among the oil inlet 11, the oil outlet 12 and the first mounting hole 13, and a first conical surface 111 is formed at a position where the oil inlet 11 and the cavity communicate with each other; the spool 5 includes:
a first mating portion 51, the first mating portion 51 having a second tapered surface 511 forming a tapered seal with the first tapered surface 111;
a second fitting portion 52 fitted with the first mounting hole 13, the first fitting portion 51 being connected to the second fitting portion 52;
when the valve core 5 moves into the second mounting hole 22 under the action of the oil inlet pressure, the first fitting portion 51 partially enters the first mounting hole 13, and a second gap is formed between the first conical surface 111 and the second conical surface 511, so that the fuel in the oil inlet 11 flows to the oil outlet 12 after passing through the second gap and the cavity 16.
Wherein, the pressing plate 26 and the valve body 24 are fixed together by a screw connection mode.
As can be seen from fig. 3, 4 and 5, after the valve core 5 moves downward, the fuel in the fuel inlet 11 cannot enter the cavity 16 and cannot flow into the fuel outlet 12 because the first tapered surface 111 and the second tapered surface 511 form a tapered seal. After the valve core 5 moves upward, the second engaging portion 52 moves into the second mounting hole 22, the first engaging portion 51 moves along with the movement of the second engaging portion 52, and after the movement of the first engaging portion 51, the first conical surface 111 and the second conical surface 511 are separated to form a second gap, and the fuel in the fuel inlet hole 11 enters the fuel outlet hole 12 after passing through the second gap and the cavity 16.
In this application, in view of the possible leakage of the gas in the first gap 31, the outer surface of the valve body is further provided with a gas outlet channel 23 connected to the cavity, and the gas between the piston 3 and the other side wall of the cavity is discharged through the gas outlet channel 23. Thus, the air inlet channel 23 can exhaust the air in the cavity when the piston 3 moves upwards, and if the air outlet channel 23 is not arranged, the air in the cavity can be pressed to generate resistance when the piston 3 moves upwards, so that the opening of the piston 3 is slowed down.
Considering that fuel may flow between the valve seat 1 and the mating surface of the valve body through the gap between the second mating portion 52 and the first mounting hole 13, as shown in fig. 2, a third gap 14 for the fuel to pass through is provided between the valve seat 1 and the valve body, and an axial groove 15 communicating with the third gap 14 is provided on the outer surface of the valve seat 1. In this way, the fuel flowing to the third gap 14 can flow back into the tank of the fuel system via the axial groove 15.
As shown in fig. 2, in order to improve the sealing performance of the fuel gas control shut-off valve, a first sealing ring 32 and a second sealing ring 33 are sleeved on the piston 3, the first sealing ring 32 is matched with the cavity, and the second sealing ring 33 is matched with the second mounting hole 22. In this way, leakage of gas and fuel can be prevented. As shown in fig. 2, the piston 3 is not easily removed from the valve body 24 due to the provision of the first seal ring 32, and the piston 3 can be pulled out by pulling the bolt 262 attached to the piston 3.
As shown in fig. 2, a third sealing ring 28 is sleeved on the outer surface of the valve body along the axial direction. The third seal ring 28 is provided to improve the sealing performance between the valve body and the external component.
As shown in fig. 2, the air intake duct 21 includes a first air intake duct provided transversely in the pressure plate 26, a second air intake duct provided longitudinally (which communicates with the first air intake duct), a third air intake duct provided longitudinally in the valve body 24 (which communicates with the second air intake duct), and a fourth air intake duct communicating with the first gap 31 (which communicates with the third air intake duct), a fourth seal ring 29 is mounted on an end surface of the valve body 24 facing the pressure plate 26 in order to prevent leakage of air between the pressure plate 26 and the valve body 24, and the fourth seal ring 29 wraps the fourth air intake duct, thereby sealing between the pressure plate 26 and the valve body 24.
According to the scheme, when the engine is stopped in an emergency and needs to be depressurized, the external sealing component on one side of the air inlet 261 is manually opened, so that external compressed air enters the valve body to push the piston 3 to move, the valve core 5 is pushed to move under the action of fuel pressure, the fuel inlet 11 and the fuel outlet 12 are conducted, and the fuel pressure relief is realized.
Claims (6)
1. A fuel gas control shut-off valve, comprising:
a valve seat (1) comprising an oil inlet (11), an oil outlet (12) and a first mounting hole (13) which are communicated with each other;
the valve body is internally provided with a cavity, and an air inlet channel (21) and a second mounting hole (22) which are formed from the outer surface of the valve body and are communicated with the cavity;
a piston (3) disposed in the cavity and partially inserted into the second mounting hole (22), wherein a first gap (31) for air in the air inlet channel (21) to enter is formed between the piston (3) and a first cavity wall of the cavity;
a pressure regulating spring (4) arranged between the second cavity wall of the cavity and the piston (3);
the valve core (5) is inserted into the oil inlet hole (11) and the first mounting hole (13) and is arranged opposite to the piston (3);
when gas enters the gas inlet channel (21), the piston (3) moves upwards under the action of the gas, the valve core (5) moves into the second mounting hole (22) under the action of oil inlet pressure, the oil inlet hole (11) and the oil outlet hole (12) are communicated, and fuel in the oil inlet hole (11) flows outwards through the oil outlet hole (12);
when no gas enters the air inlet channel (21), the piston (3) moves downwards under the action of the rebound force of the pressure regulating spring (4), the piston (3) pushes the valve core (5) to move into the first mounting hole (13), the oil inlet hole (11) and the oil outlet hole (12) are blocked, and the outflow of fuel in the oil inlet hole (11) is blocked;
a cavity (16) is formed among the oil inlet (11), the oil outlet (12) and the first mounting hole (13), and a first conical surface (111) is formed at the position where the oil inlet (11) is communicated with the cavity; the valve element (5) comprises:
a first mating portion (51), the first mating portion (51) having a second tapered surface (511) that forms a tapered seal with the first tapered surface (111);
a second fitting portion (52) fitted to the first mounting hole (13), the first fitting portion (51) being connected to the second fitting portion (52);
when the valve core (5) moves into the second mounting hole (22) under the action of oil inlet pressure, the first matching part (51) partially enters the first mounting hole (13), a second gap is formed between the first conical surface (111) and the second conical surface (511), and fuel in the oil inlet hole (11) flows to the oil outlet hole (12) after passing through the second gap and the cavity (16);
the valve body includes:
the valve body (24), the second mounting hole (22) is arranged on the valve body (24), a third mounting hole (25) communicated with the second mounting hole (22) is further formed in the valve body (24), and the piston (3) is inserted into the second mounting hole (22) from the third mounting hole (25);
a pressing plate (26) mounted on the valve body (24), wherein a fourth mounting hole (27) opposite to the third mounting hole (25) is formed in the end surface of the pressing plate (26) facing the valve body (24), and the third mounting hole (25) and the fourth mounting hole (27) form the cavity;
one end of the pressure regulating spring (4) is fixed on the piston (3), and the other end of the pressure regulating spring is fixed on the hole wall of the fourth mounting hole (27).
2. The fuel gas control shut-off valve according to claim 1, wherein the outer surface of the valve body is further provided with an air outlet channel (23) communicated with the cavity, and air between the piston (3) and the other side wall of the cavity is discharged outwards through the air outlet channel (23).
3. The fuel gas control shut-off valve according to claim 1, characterized in that a third gap (14) for fuel to pass through is arranged between the valve seat (1) and the valve body, and an axial groove (15) communicating with the third gap (14) is arranged on the outer surface of the valve seat (1).
4. The fuel gas control shut-off valve according to claim 1, characterized in that a first sealing ring (32) and a second sealing ring (33) are sleeved on the piston (3), the first sealing ring (32) is matched with the cavity, and the second sealing ring (33) is matched with the second mounting hole (22).
5. The fuel gas control shut-off valve according to claim 1, characterized in that a third sealing ring (28) is sleeved on the outer surface of the valve body in the axial direction.
6. The fuel gas shut-off valve according to claim 1, wherein the pressure plate (26) is screwed with the valve body (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556721.5A CN109442047B (en) | 2018-12-19 | 2018-12-19 | Fuel gas control stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556721.5A CN109442047B (en) | 2018-12-19 | 2018-12-19 | Fuel gas control stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109442047A CN109442047A (en) | 2019-03-08 |
| CN109442047B true CN109442047B (en) | 2023-12-19 |
Family
ID=65560351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811556721.5A Active CN109442047B (en) | 2018-12-19 | 2018-12-19 | Fuel gas control stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109442047B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117865A (en) * | 1976-11-05 | 1978-10-03 | Beck Earl A | Air over oil high pressure modulating valve |
| US6422531B1 (en) * | 2000-06-28 | 2002-07-23 | Wabtec Corporation | ECP manifold valve inserts |
| CN1721749A (en) * | 2004-07-05 | 2006-01-18 | 查谦 | Two-position two-way pneumatic control valve |
| JP2006065586A (en) * | 2004-08-26 | 2006-03-09 | Toyota Motor Corp | Pressure reducing valve |
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN205445807U (en) * | 2015-12-30 | 2016-08-10 | 潍柴动力股份有限公司 | Engine oil -break device |
| CN209146336U (en) * | 2018-12-19 | 2019-07-23 | 重庆红江机械有限责任公司 | A kind of fuel oil gas control stop valve |
-
2018
- 2018-12-19 CN CN201811556721.5A patent/CN109442047B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117865A (en) * | 1976-11-05 | 1978-10-03 | Beck Earl A | Air over oil high pressure modulating valve |
| US6422531B1 (en) * | 2000-06-28 | 2002-07-23 | Wabtec Corporation | ECP manifold valve inserts |
| CN1721749A (en) * | 2004-07-05 | 2006-01-18 | 查谦 | Two-position two-way pneumatic control valve |
| JP2006065586A (en) * | 2004-08-26 | 2006-03-09 | Toyota Motor Corp | Pressure reducing valve |
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN205445807U (en) * | 2015-12-30 | 2016-08-10 | 潍柴动力股份有限公司 | Engine oil -break device |
| CN209146336U (en) * | 2018-12-19 | 2019-07-23 | 重庆红江机械有限责任公司 | A kind of fuel oil gas control stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109442047A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5538187A (en) | Fuel injection device for internal combustion engines | |
| KR102022043B1 (en) | Electromagnetic valve for a tank valve of a fuel supply system | |
| KR100725786B1 (en) | Gas flow regulation system | |
| US8459288B2 (en) | Pressure reducing valve and regulator for gas | |
| EP2584205B1 (en) | Time-delay valve | |
| US5413077A (en) | Non-return fuel system with fuel pressure vacuum response | |
| US9038601B2 (en) | Flow limiter assembly for a fuel system of an internal combustion engine | |
| GB2282184A (en) | I.c.engine fuel injector control | |
| CN107191653B (en) | Water hammer bleeder valve | |
| US9410632B2 (en) | Shut-off valve | |
| KR940005879A (en) | Fuel injection control device | |
| CN110397533B (en) | Diesel engine high-pressure fuel oil electric control booster pump | |
| CN109442047B (en) | Fuel gas control stop valve | |
| US6318405B1 (en) | Fuel pressure regulator with fluidic assist | |
| WO2011150543A1 (en) | Injection valve for electric control oil injector | |
| EP3180510A1 (en) | A fuel injection valve arrangement for internal combustion engine | |
| CN201273386Y (en) | Piston type pressure-control check valve | |
| CN211069344U (en) | Filter differential pressure detection early warning device | |
| US6298828B1 (en) | Adjustable fuel pressure regulator | |
| CN209146336U (en) | A kind of fuel oil gas control stop valve | |
| US2817356A (en) | Compressor governor | |
| JP5846448B2 (en) | Pressure control device for gaseous fuel | |
| CN112368196A (en) | Hydraulic control housing constructed in a modular manner | |
| CN205388058U (en) | A automatically controlled overflow valve of stack formula for control system pressure | |
| CN211950717U (en) | Diesel engine high-pressure fuel oil electric control booster pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |