CN219139961U - Fuel tank oil pressure opening valve and pressure fuel system - Google Patents
Fuel tank oil pressure opening valve and pressure fuel system Download PDFInfo
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- CN219139961U CN219139961U CN202223466389.8U CN202223466389U CN219139961U CN 219139961 U CN219139961 U CN 219139961U CN 202223466389 U CN202223466389 U CN 202223466389U CN 219139961 U CN219139961 U CN 219139961U
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Abstract
The present application relates to the field of high pressure fuel systems, and more particularly to a fuel tank oil pressure opening valve comprising: opening the valve housing; one end of the adsorption pipeline is communicated with the carbon tank, and the other end of the adsorption pipeline is communicated with the inside of the opening valve shell; one end of the two groups of evaporation pipelines is communicated with the interior of the opening valve shell, and the other end of the two groups of evaporation pipelines is respectively communicated with the oil tank end or the fuel filling device end; the overpressure safety valve is arranged in the opening valve shell to communicate the evaporation pipeline and the adsorption pipeline when the pressure in the evaporation pipeline is excessive; the oil pressure control mechanism is arranged inside the opening valve shell and is communicated with an oil supply pipeline, so that the oil pressure control mechanism drives the overpressure safety valve to be opened when the engine runs, and the oil pressure control mechanism has the advantages of realizing the communication of the oil tank and the carbon tank when the engine runs, ensuring the stable function of the internal pressure of the oil tank, prolonging the service life and reducing the production cost without an electric control mode.
Description
Technical Field
The present application relates to the field of high pressure fuel systems, and in particular to a fuel tank oil pressure opening valve and a pressure fuel system.
Background
The high-pressure fuel system mainly comprises a fuel tank, an engine, a carbon tank and a fuel tank isolation valve, wherein the fuel tank isolation valve is connected between the fuel tank and the carbon tank and used for controlling the internal pressure of the fuel tank.
The fuel tank isolation valve generally comprises an electromagnetic valve, an overpressure safety valve and a vacuum safety valve, wherein the overpressure safety valve is used for relieving pressure of the fuel tank when the pressure in the fuel tank is high, and the vacuum safety valve is used for supplementing air in the fuel tank when the pressure in the fuel tank is low, so that the function of controlling the pressure in the fuel tank is realized; when the fuel tank is filled with fuel, the electromagnetic valve is communicated with the fuel tank and the carbon tank, and the pressure of the fuel tank is relieved, so that the fuel can smoothly flow into the fuel tank.
The opening working conditions of the electromagnetic valve mainly comprise two types, wherein one type is that when the vehicle OBD device diagnoses the fuel system, the electromagnetic valve is opened so as to be convenient for the OBD device to diagnose the tightness of the whole fuel system; the other working condition is that when the engine is running, the electromagnetic valve is opened to control the internal pressure of the oil tank, so that the oil tank is prevented from working under high pressure for a long time, and the fatigue failure of parts such as the oil tank shell and the like is avoided.
The electromagnetic valve is adopted as an oil pressure relief means of the oil tank at the current stage, the electromagnetic valve can be opened only under certain needed working conditions, the oil tank can not be relieved in real time under various complex working conditions, and the electromagnetic valve has the defects of high production cost, low service life and the like.
Disclosure of Invention
The application provides a fuel tank oil pressure opening valve and pressure fuel system, has and need not automatically controlled mode, can realize carrying out the oil tank pressure release in real time under multiple complicated operating mode.
The technical aim of the application is achieved through the following technical scheme:
a fuel tank oil pressure opening valve comprising:
opening the valve housing;
one end of the adsorption pipeline is communicated with the carbon tank, and the other end of the adsorption pipeline is communicated with the inside of the opening valve shell;
one end of the two groups of evaporation pipelines is communicated with the interior of the opening valve shell, and the other end of the two groups of evaporation pipelines is respectively communicated with the oil tank end or the fuel filling device end;
the overpressure safety valve is arranged in the opening valve shell to communicate the evaporation pipeline and the adsorption pipeline when the pressure in the evaporation pipeline is excessive;
the oil pressure control mechanism is arranged in the opening valve shell and is communicated with an oil supply pipeline, so that the oil pressure control mechanism drives the overpressure safety valve to open when the engine operates.
Optionally, the inside excessive pressure installation cavity that is used for installing the excessive pressure relief valve, and with adsorbing the pipeline intercommunication that is provided with of valve casing, the excessive pressure relief valve includes excessive pressure relief valve disk seat, excessive pressure relief valve block and excessive pressure relief valve spring, and the excessive pressure relief valve disk seat sets up at excessive pressure installation cavity interior top, and the excessive pressure relief valve block is installed in the excessive pressure relief valve disk seat, and excessive pressure relief valve spring one end and excessive pressure relief valve disk seat butt are in order to utilize the excessive pressure relief valve block to seal excessive pressure relief cavity and evaporating pipeline under the elastic force effect.
Optionally, the opening valve casing is provided with annular boss in the interior top position department of excessive pressure installation cavity, and annular boss's the outside is fixed with opening valve casing inner wall, and annular boss's inboard is formed with the size and is less than the intercommunicating pore of excessive pressure installation cavity, and the excessive pressure relief valve disk seat sets up in annular boss below, and the excessive pressure relief valve disk sheet sets up between excessive pressure relief valve disk seat and annular boss and laminating with excessive pressure relief valve disk seat upper surface.
Optionally, the adsorption pipeline is connected in the fixed closing plate that is provided with the shutoff of excessive pressure safety chamber in the one end of excessive pressure installation chamber, and the closing plate is fixed in one side central point department of excessive pressure installation chamber and is provided with the ring cover, and the closing plate is fixed with the cutting ferrule in the periphery of ring cover, and the gap between ring cover and the cutting ferrule is located to the bottom card of excessive pressure relief valve spring.
Optionally, the oil pressure control mechanism includes oil pressure control casing and end cover, and oil pressure control casing and end cover lock form the inside cavity with the oil supply pipeline intercommunication, and the top of inside cavity is provided with and is used for the confined oil pressure control valve block of oil supply pipeline, inlays and locates the inside and fixed oil pressure control valve core with the oil pressure control valve block of oil pressure control valve block, sets up in the oil pressure control valve block below and with the fixed oil pressure control spring seat of oil pressure control valve core, sets up the oil pressure control spring between oil pressure control casing inner bottom and oil pressure control spring seat, the top of excessive pressure relief valve disk seat penetrates the oil pressure control casing inside and with the oil pressure control valve core between leave the interval.
Optionally, a plurality of pressure relief holes are formed in the periphery of one end of the oil supply pipeline, which penetrates into the end cover.
Optionally, a fixed snap ring for fixedly connecting the oil pressure control mechanism with the opening valve housing is arranged at the top of the opening valve housing.
Optionally, the central point of end cover puts and is provided with the central arch of evagination, and the intermediate position department of fixed snap ring has offered the centre bore with central protruding complex, and fixed snap ring is provided with the buckle that is used for opening the valve casing lock joint around fixedly.
The present application also provides a pressure fuel system of a fuel tank oil pressure opening valve, comprising:
an oil tank;
the fuel filling device is communicated with the fuel tank to supplement fuel;
the engine is used for being connected with an oil pump in the oil tank to receive oil supply;
one end of the carbon tank is communicated with the engine, and the other end of the carbon tank is communicated with the fuel filling device;
the evaporation pipelines at the two ends of the oil pressure opening valve are respectively communicated with the fuel filling device and the oil tank, the oil supply pipeline of the oil pressure opening valve is communicated with a pipeline between the engine and an oil pump in the oil tank, and the adsorption pipeline of the oil pressure opening valve is communicated with a pipeline between the carbon tank and the fuel filling device.
By adopting the technical scheme, when the engine is not operated and the internal pressure of the oil tank is normal, the overpressure safety valve is not under the pressure action and is in a closed state, and at the moment, the two groups of evaporation pipelines are kept normally communicated; when the oil tank is internally filled with oil, the fuel filling device is opened, the pressure in the oil tank is quickly released and kept at a normal pressure level, and fuel vapor generated in the oil filling process enters the oil pressure opening valve along a pipeline and finally enters the carbon tank along an evaporation pipeline to be adsorbed; when the engine is not operated and the internal pressure of the oil tank is too high, fuel vapor in the oil tank flows into the oil pressure opening valve along the evaporation pipeline, and the too high oil pressure downwards extrudes the overpressure safety valve plate, so that the overpressure safety valve spring is compressed, the fuel vapor can enter the overpressure mounting cavity and finally enter the carbon tank along the adsorption pipeline, and the oil pressure balance of the oil tank is ensured; when the engine runs, the oil pump in the oil tank supplies fuel to the engine, at the moment, the vehicle is in a running state, part of fuel vapor enters the oil pressure control mechanism through the oil supply pipeline, the oil pressure control valve plate downwards extrudes the oil pressure control spring, so that the oil pressure control valve plate is driven to downwards push the overpressure safety valve seat, the overpressure mounting cavity is communicated with the evaporation pipeline, the fuel vapor generated in the oil tank enters the opening valve from the evaporation pipeline, finally enters the carbon tank along the adsorption pipeline, and overpressure in the oil tank is prevented.
In summary, the present application has at least the following technical effects:
1. the high-pressure fuel system can be controlled to be connected with or disconnected from the atmosphere through the pressure of the oil supply pipeline;
2. the pressure relief valve has the function of an overpressure relief valve, and can relieve pressure when the pressure in the oil tank is too high;
3. separating the fuel filling device from the opening valve, thereby reducing the volume of the fuel filling device to adapt to more vehicle types;
4. can adapt to various diagnosis modes of the evaporation system of the OBD system of the motor vehicle.
Drawings
FIG. 1 is a schematic view of the overall structure of a fuel tank oil pressure opening valve in an embodiment of the present application;
FIG. 2 is a cross-sectional view of a fuel tank oil pressure opening valve in an embodiment of the present application;
FIG. 3 is a partial cross-sectional view of an embodiment of the present application that is intended to emphasize an overpressure relief valve;
FIG. 4 is a partial cross-sectional view of an embodiment of the present application that is intended to emphasize an oil pressure control mechanism;
fig. 5 is a schematic structural diagram of a pressure fuel system according to an embodiment of the present application.
In the figure, 1, opening a valve housing; 11. an overpressure mounting cavity; 111. an annular boss; 112. a communication hole; 2. an oil supply line; 21. a pressure relief hole; 3. an evaporation pipeline; 4. an adsorption pipeline; 41. a sealing plate; 42. a ring sleeve; 43. a cutting sleeve; 5. an oil pressure control mechanism; 51. an oil pressure control housing; 511. an annular buckling part; 512. an inner ring piece; 513. a mating hole; 52. an end cap; 521. an internal cavity; 522. a clasp ring; 523. a central boss; 53. an oil pressure control valve plate; 54. an oil pressure control valve element; 541. a valve core fixing nut; 55. an oil pressure control spring seat; 56. an oil pressure control spring; 6. an overpressure safety valve; 61. an overpressure relief valve seat; 611. an abutting sleeve; 62. an overpressure safety valve plate; 63. an overpressure relief valve spring; 7. a fixed snap ring; 71. a central bore; 72. a buckle; 8. a fuel filling device; 81. an oil tank; 811. an oil pump; 82. an engine; 83. a carbon tank.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the application provides a fuel tank oil pressure opening valve, including opening valve casing 1, opening valve casing 1 inside cavity, the relative both sides intercommunication of opening valve casing 1 has evaporating pipeline 3, and wherein a set of evaporating pipeline 3 is used for with the oil tank end intercommunication, and another set of evaporating pipeline 3 is used for with the fuel filling device end intercommunication, and the top of opening valve casing 1 is provided with the oil pressure control mechanism 5 that is used for with the oil feed pipeline 2 intercommunication, and the bottom intercommunication has the absorption pipeline 4 that is used for with the carbon tank 83 intercommunication.
Specifically, in combination with fig. 2 and fig. 3, an overpressure installation cavity 11 is formed in the opening valve, the overpressure installation cavity 11 is communicated with the evaporation pipeline 3 and the adsorption pipeline 4, and an overpressure safety valve 6 is mounted in the overpressure installation cavity 11.
The adsorption pipeline 4 is provided with closing plate 41 towards opening the fixed one end of valve casing 1, and closing plate 41 is used for plugging up the bottom of excessive pressure installation cavity 11, and adsorption pipeline 4 is provided with the ring cover 42 in the fixed one side surface central point department of closing plate 41 towards excessive pressure installation cavity 11 in the center of closing plate 41 and the inside intercommunication of excessive pressure installation cavity 11, and the periphery of ring cover 42 is provided with the cutting ferrule 43 fixed with closing plate 41, and the degree of depth that ring cover 42 stretched into excessive pressure installation cavity 11 is greater than the degree of depth that cutting ferrule 43 stretched into excessive pressure installation cavity 11, and leaves the clearance between ring cover 42 and the cutting ferrule 43.
The overpressure safety valve 6 comprises an overpressure safety valve seat 61, an overpressure safety valve plate 62 and an overpressure safety valve spring 63, wherein the bottom of the overpressure safety valve spring 63 is clamped in a gap between the annular sleeve 42 and the clamping sleeve 43, the overpressure safety valve seat 61 is arranged at the top of the overpressure safety valve spring 63, specifically, the lower surface of the overpressure safety valve seat 61 is provided with an abutting sleeve 611 embedded in the inner ring of the overpressure safety valve spring 63, the overpressure safety valve spring 63 is sleeved on the outer wall of the abutting sleeve 611, and the top end of the overpressure safety valve seat 63 is abutted with the overpressure safety valve seat 61. The overpressure relief valve plate 62 is attached to the upper surface of the overpressure relief valve seat 61.
The overpressure installation cavity 11 is provided with a circle of annular boss 111 at a position close to the communication position of the evaporation pipeline 3, the annular boss 111 is fixedly connected with the inner wall of the opening valve shell 1, and a communication hole 112 for communicating the overpressure installation cavity 11 with the evaporation pipeline 3 is formed in the middle position of the annular boss 111.
The overpressure safety valve seat 61 and the overpressure safety valve plate 62 are both arranged below the annular boss 111, and under the action of the elastic force of the overpressure safety valve spring 63, the overpressure safety valve plate 62 is abutted with the bottom surface of the annular boss 111 so as to disconnect the overpressure installation cavity 11 from the evaporation pipeline 3.
Referring to fig. 2 and 4, the oil pressure control mechanism 5 includes an oil pressure control housing 51, an end cap 52, an oil pressure control valve plate 53, an oil pressure control valve spool 54, an oil pressure control spring seat 55, and an oil pressure control spring 56, specifically, the oil pressure control housing 51 is hollow and open at the top, the end cap 52 is covered above the oil pressure control housing 51 to form an internal cavity 521, and the internal cavity 521 is in communication with the oil supply line 2.
The end cover 52 is fixed to the opening valve housing 1 through a fixing snap ring 7, specifically, a central protrusion 523 protruding outwards is provided at a central position of the end cover 52, a central hole 71 matching with the central protrusion 523 is provided at a central position of the fixing snap ring 7, and a buckle 72 for fastening and fixing the fixing snap ring 7 to the opening valve housing 1 is provided around the fixing snap ring 7, so that the oil pressure control mechanism 5 and the opening valve housing 1 are stably and fixedly connected by using the fixing snap ring 7.
The top edge of the oil pressure control housing 51 is folded outwards horizontally to form an annular buckling part 511, the edge of the end cover 52 is folded inwards to form a buckling ring 522, and the buckling ring 522 is buckled on the annular buckling part 511 during installation, so that the end cover 52 and the oil pressure control housing 51 are fixed.
The oil pressure control valve plate 53 adopts an elastic membrane structure, the edge of the oil pressure control valve plate 53 stretches into the space between the surface of the annular buckling part 511 and the buckling ring 522, the buckling ring 522 and the annular buckling part 511 are fixedly pressed, the top end of the oil pressure control valve core 54 is embedded into the oil pressure control valve plate 53 to fixedly connect the two, the oil pressure control spring seat 55 is of a bowl-shaped structure with a downward opening, and the oil pressure safety spring seat 55 is fixedly connected with the oil pressure control valve core 54, and the specific fixing mode is as follows: the oil pressure control valve core 54 is sleeved with a valve core fixing nut 541 at a position below the oil pressure control spring seat 55, and the valve core fixing nut 541 is in threaded connection with the oil pressure control valve core 54 and is used for pressing the oil pressure control spring seat 55 against the oil pressure control valve plate 53.
The bottom end of the hydraulic control spring 56 abuts against the inner bottom surface of the hydraulic control housing 51, and the top end thereof is engaged with the hydraulic control spring seat 55.
Further, an inner ring piece 512 is formed by bending inwards at the middle position of the inner bottom of the oil pressure control housing 51, a matching hole 513 for communicating the inside of the oil pressure control housing 51 with the evaporation pipeline 3 is formed around the inner ring piece 512, the top end of the overpressure relief valve seat 61 penetrates into the inner cavity 521 from the matching hole 513, the bottom end of the oil pressure control valve core 54 faces to the top end of the overpressure relief valve seat 61, and a gap is reserved between the inner ring piece and the top end.
The periphery of one end of the oil supply pipeline 2 extending into the end cover 52 is provided with a plurality of pressure relief holes 21. When the engine 82 is running, the fuel vapor generated by the fuel tank 81 due to complex road conditions or jolt, high temperature and other conditions is more, so that the inside of the fuel tank 81 is overpressurized, and at this time, the pressure generated by the fuel supply pipeline 2 in the fuel supply process of the engine 82 is applied to the surface of the fuel pressure control valve plate 53 through the pressure relief hole 21, and the fuel pressure control valve plate 53 is extruded to deform downwards, so as to drive the fuel pressure control valve core 54 to descend and push the overpressure relief valve seat 61 to descend, and finally, the evaporation pipeline 3 communicated with the fuel tank end is communicated with the adsorption pipeline 4, so that the inside of the fuel tank 81 is depressurized, and the pressure in the fuel tank 81 is ensured to be kept normal.
The present embodiment also discloses a pressure fuel system, as shown in fig. 5, which comprises a fuel filling device 8, a fuel tank 81, an engine 82, a carbon tank 83 and an oil pressure opening valve, wherein the fuel filling device 8 is communicated with a fuel supplementing port of the fuel tank 81, an oil pump 811 is arranged in the fuel tank 81, the oil pump 811 is communicated with the engine 82 through a pipeline to supply oil to the engine 82, and an oil supply pipeline 2 of the oil pressure opening valve is communicated between the engine 82 and the oil pump 811. One group of evaporation pipelines 3 of the oil pressure opening valve is communicated with the fuel filling device 8, and the other group of evaporation pipelines 3 is communicated with the oil tank 81 through a effusion box; the adsorption pipeline 4 of the oil pressure opening valve is communicated with the carbon tank 83, and the fuel filling device 8 is also communicated with the carbon tank 83 through a pipeline.
Further, the end of the engine 82 is connected to a canister 83, and a canister desorption valve is installed on the connection pipe, and the atmospheric port of the canister 83 is connected to an OBD (i.e., an on-board diagnostic system) and a filter in order.
The above embodiment includes the following four specific application conditions, and the specific principle analysis is as follows:
working condition one: the engine is not operated, and the internal pressure of the oil tank is normal:
at this time, the evaporation pipeline 3 in the oil pressure opening valve is kept in communication, the oil pressure control mechanism 5 and the overpressure relief valve 6 are kept in initial states, the evaporation pipeline 3 and the adsorption pipeline 4 are blocked by the overpressure relief valve plate 62, a small amount of fuel vapor in the oil tank 81 flows into the evaporation pipeline 3, and the fuel filling device 8 is kept in a closed state at this time so as to prevent oil gas from overflowing.
Working condition II: oiling condition
At this time, the fuel filling device 8 is opened, the fuel tank 81 is rapidly depressurized, part of fuel vapor enters the evaporation pipeline 3 along the pipeline due to the impact generated by filling the fuel in the fuel tank 81, and the fuel vapor flows into the carbon tank 83 from the fuel filling device 8 after passing through the whole oil pressure opening valve from the evaporation pipeline 3 due to the opening of the fuel filling device 8, is adsorbed and purified by the carbon tank 83 and is discharged into the atmosphere, so that the pressure inside the whole fuel tank 81 is kept normal in the process.
And (3) working condition III: the engine is not operated, and the internal pressure of the oil tank is too high
The working condition corresponds to that the vehicle is driven by electric power, the engine does not operate, the pressure in the oil tank is too high, or the vehicle is in a stop state, in an area with a larger day-night temperature difference, the pressure in the oil tank is too high due to temperature change, fuel vapor in the oil tank 81 enters the oil pressure opening valve along the evaporation pipeline 3, the oil pressure in the oil tank 81 is large, and the fuel filling device 8 is kept closed at the moment, so that the high-pressure fuel vapor enters the surface of the overpressure safety valve plate 62 to drive the overpressure safety valve plate 62 to press the overpressure safety valve spring 63, the evaporation pipeline 3 is communicated with the overpressure installation cavity 11, the fuel vapor enters the overpressure installation cavity 11 and finally enters the carbon tank 83 along the adsorption pipeline 4, the fuel vapor is adsorbed by the carbon tank and then discharged into the atmosphere, and the oil pressure in the oil tank 81 is kept normal in the whole process.
And (4) working condition four: engine operation
During the operation of the engine, the oil in the oil tank 81 is in an evaporated state, and particularly when the vehicle runs under complex road conditions such as bumpy roads, high-temperature environments, etc., evaporation of the fuel in the oil tank 81 is aggravated. At this time, on the one hand, the oil pump 811 supplies the fuel to the engine 82 to ensure that the engine 82 operates normally, part of the fuel supplied to the engine 82 enters the oil supply pipeline 2 of the oil pressure opening valve, and applies pressure to the oil pressure control valve plate 53, so that the oil pressure control spring 56 compresses and drives the oil pressure control valve core 54 to move downwards, the oil pressure control valve core 54 moves downwards to drive the overpressure relief valve plate 62 to move downwards in the process of moving downwards, so that the evaporation pipeline 3 of the oil pressure opening valve is communicated with the adsorption pipeline 4, on the other hand, the fuel vapor in the oil tank 81 evaporates to be intensified, the high-pressure fuel vapor enters the evaporation pipeline 3 and then applies pressure to the surface of the overpressure relief valve plate 62 to drive the overpressure relief valve plate 62 to press the overpressure relief valve spring 63, at this time, the evaporation pipeline 3 is communicated with the overpressure relief valve plate 11, so that the fuel vapor enters the overpressure relief valve 11, finally enters the carbon tank 83 along the adsorption pipeline 4, the fuel vapor is adsorbed by the carbon tank and then discharged into the atmosphere, and the whole process keeps the oil pressure in the oil tank 81 normal.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (9)
1. A fuel tank oil pressure opening valve, characterized by comprising:
opening the valve housing (1);
an adsorption pipeline (4), one end of which is used for being communicated with the carbon tank (83) and the other end of which is communicated with the inside of the opening valve shell (1);
two groups of evaporation pipelines (3), one end of which is communicated with the interior of the opening valve shell (1) and the other end of which is respectively communicated with the end of the oil tank (81) or the end of the fuel filling device (8);
an overpressure safety valve (6) which is arranged in the opening valve shell (1) to communicate the evaporation pipeline (3) with the adsorption pipeline (4) when the pressure in the evaporation pipeline (3) is overlarge;
the oil pressure control mechanism (5) is arranged in the opening valve shell (1), and the oil pressure control mechanism (5) is communicated with the oil supply pipeline (2) so that the oil pressure control mechanism (5) drives the overpressure safety valve (6) to open when the engine operates.
2. The fuel tank oil pressure opening valve according to claim 1, characterized in that an overpressure mounting cavity (11) for mounting an overpressure safety valve (6) and communicating with an adsorption pipeline (4) is arranged inside the opening valve housing (1), the overpressure safety valve (6) comprises an overpressure safety valve seat (61), an overpressure safety valve plate (62) and an overpressure safety valve spring (63), the overpressure safety valve seat (61) is arranged at the inner top of the overpressure mounting cavity (11), the overpressure safety valve plate (62) is mounted on the overpressure safety valve seat (61), and one end of the overpressure safety valve spring (63) is abutted with the overpressure safety valve seat (61) to seal the overpressure mounting cavity (11) with the evaporation pipeline (3) by the overpressure safety valve plate (62) under the action of elastic force.
3. The fuel tank oil pressure opening valve according to claim 2, wherein the opening valve housing (1) is provided with an annular boss (111) at an inner top position of the overpressure mounting cavity (11), an outer side of the annular boss (111) is fixed with an inner wall of the opening valve housing (1), a communication hole (112) smaller than the overpressure mounting cavity (11) in size is formed at an inner side of the annular boss (111), the overpressure safety valve seat (61) is arranged below the annular boss (111), and the overpressure safety valve plate (62) is arranged between the overpressure safety valve seat (61) and the annular boss (111) and is attached to an upper surface of the overpressure safety valve seat (61).
4. The fuel tank oil pressure opening valve according to claim 2, wherein one end of the adsorption pipeline (4) communicated with the overpressure installation cavity (11) is fixedly provided with a sealing plate (41) for blocking the overpressure safety cavity, a ring sleeve (42) is fixedly arranged at the center of one side of the overpressure installation cavity (11) on the sealing plate (41), a clamping sleeve (43) is fixedly arranged on the periphery of the ring sleeve (42) on the sealing plate (41), and the bottom end of the overpressure safety valve spring (63) is clamped in a gap between the ring sleeve (42) and the clamping sleeve (43).
5. The fuel tank oil pressure opening valve according to claim 2, wherein the oil pressure control mechanism (5) comprises an oil pressure control shell (51) and an end cover (52), the oil pressure control shell (51) and the end cover (52) are buckled to form an inner cavity (521) communicated with the oil supply pipeline (2), an oil pressure control valve block (53) for sealing the oil supply pipeline (2), an oil pressure control valve core (54) embedded in the oil pressure control valve block (53) and fixed with the oil pressure control valve block (53), an oil pressure control spring seat (55) arranged below the oil pressure control valve block (53) and fixed with the oil pressure control valve core (54), and an oil pressure control spring (56) arranged between the inner bottom of the oil pressure control shell (51) and the oil pressure control spring seat (55), and the top of the valve seat of the overpressure safety valve (6) penetrates into the oil pressure control shell (51) and leaves a space with the oil pressure control valve core (54).
6. The fuel tank oil pressure opening valve according to claim 5, wherein a plurality of relief holes (21) are provided at positions around one end of the oil supply pipe (2) penetrating into the end cap (52).
7. A fuel tank oil pressure opening valve according to claim 5, characterized in that the top of the opening valve housing (1) is provided with a fixing snap ring (7) for fixedly connecting the oil pressure control mechanism (5) with the opening valve housing (1).
8. The fuel tank oil pressure opening valve according to claim 7, characterized in that the center position of the end cover (52) is provided with a convex center bulge (523), the middle position of the fixed snap ring (7) is provided with a center hole (71) matched with the center bulge (523), and the periphery of the fixed snap ring (7) is fixedly provided with a buckle (72) for buckling the opening valve housing (1).
9. A pressurized fuel system employing the fuel tank oil pressure opening valve of any one of claims 1 to 8, comprising:
a fuel tank (81);
a fuel filling device (8) for communicating with the fuel tank (81) to make up fuel;
an engine (82) for connecting with an oil pump (811) in the oil tank (81) to receive oil supply;
a carbon tank (83), one end of which is communicated with the engine (82) and the other end of which is communicated with the fuel filling device (8);
the oil pressure opening valve is characterized in that evaporation pipelines (3) at two ends of the oil pressure opening valve are respectively communicated with a fuel filling device (8) and an oil tank (81), an oil supply pipeline (2) of the oil pressure opening valve is communicated with a pipeline between an engine (82) and an oil pump (811) in the oil tank (81), and an adsorption pipeline (4) of the oil pressure opening valve is communicated with a pipeline between a carbon tank (83) and the fuel filling device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223466389.8U CN219139961U (en) | 2022-12-20 | 2022-12-20 | Fuel tank oil pressure opening valve and pressure fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223466389.8U CN219139961U (en) | 2022-12-20 | 2022-12-20 | Fuel tank oil pressure opening valve and pressure fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219139961U true CN219139961U (en) | 2023-06-06 |
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ID=86560800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223466389.8U Active CN219139961U (en) | 2022-12-20 | 2022-12-20 | Fuel tank oil pressure opening valve and pressure fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219139961U (en) |
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2022
- 2022-12-20 CN CN202223466389.8U patent/CN219139961U/en active Active
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