CN212499876U

CN212499876U - Oil tank isolating valve, oil tank system and vehicle

Info

Publication number: CN212499876U
Application number: CN202021677174.9U
Authority: CN
Inventors: 莫逗
Original assignee: Shanghai Datro Automobile Technology Co ltd
Current assignee: Shanghai Datro Automobile Technology Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-02-09
Anticipated expiration: 2030-08-12

Abstract

The application provides an oil tank isolating valve, an oil tank system and a vehicle. The oil tank isolation valve comprises a shell, a first blocking part and a moving part. The casing is equipped with first intercommunication mouth and second intercommunication mouth, and first intercommunication mouth is used for being connected with the oil tank, and the second intercommunication mouth is used for linking with the hydrocarbon adsorption desorption device. A partition board is arranged in the shell and divides the inner cavity of the shell into a first cavity and a second cavity. The first chamber is communicated with the first communication port, and the second chamber is communicated with the second communication port. The partition plate is provided with a first through hole and a second through hole. The first plugging portion is used for plugging the first through hole. The moving part is positioned in the first chamber and is provided with a second plugging part. When the pressure of oil gas in the oil tank is greater than a first threshold value, the oil gas entering the first cavity pushes the first blocking part to move in the direction away from the partition plate, so that the first through hole is opened. When the pressure in the oil tank is smaller than a second threshold value, the external air entering the second cavity through the oil-gas adsorption and desorption device pushes the second plugging part to move, and the second through hole is opened.

Description

Oil tank isolating valve, oil tank system and vehicle

Technical Field

The application relates to the technical field of leakage diagnosis, in particular to an oil tank isolation valve, an oil tank system and a vehicle.

Background

With the improvement of living standard, automobiles become a common transportation tool. The oil tank of car is connected with the carbon tank, and the oil gas in the oil tank can enter into the carbon tank in by the active carbon adsorption in the carbon tank, carbon tank and outside air intercommunication. After the engine of the automobile is started, oil gas and fresh air are sent to the engine together for combustion.

However, for a hybrid vehicle, if the vehicle is in an electric drive mode for a long time, oil gas in the carbon tank cannot be sent to the engine, and after the activated carbon in the carbon tank adsorbs the oil gas to be saturated, redundant oil gas is discharged into the atmosphere, so that environmental pollution is caused.

SUMMERY OF THE UTILITY MODEL

The application provides an oil tank isolating valve, an oil tank system and a vehicle.

According to a first aspect of embodiments of the present application, there is provided a tank isolation valve comprising:

the oil gas adsorption and desorption device comprises a shell, wherein the shell is provided with a first communication port and a second communication port, the first communication port is used for being connected with an oil tank, and the second communication port is used for being connected with the oil gas adsorption and desorption device; a partition plate is arranged in the shell and divides an inner cavity of the shell into a first cavity and a second cavity; the first chamber is communicated with the first communication port, and the second chamber is communicated with the second communication port; the partition plate is provided with a first through hole and a second through hole;

the first blocking part is used for blocking the first through hole and is positioned in the second cavity;

the moving part is positioned in the first cavity and is provided with a second plugging part for plugging the second through hole;

when the pressure of oil gas in the oil tank is greater than a first threshold value, the oil gas entering the first cavity pushes the first plugging part to move in a direction away from the partition plate, so that the first through hole is opened; when the pressure in the oil tank is smaller than a second threshold value, the external air entering the second cavity through the oil-gas adsorption and desorption device pushes the second plugging portion to move in the direction away from the partition plate, so that the second through hole is opened.

In one embodiment, the oil tank isolation valve further comprises a supporting part and a first elastic piece; the abutting part is fixed in the first cavity, the first elastic piece is positioned in the first cavity, one end of the first elastic piece abuts against the abutting part, and the other end of the first elastic piece abuts against the moving part;

when the pressure in the oil tank is smaller than the second threshold value, the second blocking part moves in the direction away from the partition plate, and the first elastic piece is compressed; when the pressure in the oil tank is greater than the second threshold value, the first elastic piece stretches to drive the second plugging portion to abut against the partition plate, and the second plugging portion plugs the second through hole.

In one embodiment, the oil tank isolation valve further comprises a second elastic member, the second elastic member is located in the first chamber, the oil tank isolation valve further comprises a baffle movably arranged in the first chamber, one end of the second elastic member abuts against the baffle, and the other end of the second elastic member abuts against the partition; the first plugging part is connected with the baffle;

when the pressure of oil gas in the oil tank is greater than the first threshold value, the first blocking part moves in the direction away from the partition plate, and the second elastic part is compressed; when the pressure of oil gas in the oil tank is smaller than the first threshold value, the second elastic piece stretches to drive the first plugging portion to abut against the partition plate, and the first through hole is plugged by the first plugging portion.

In one embodiment, the moving portion includes a ring-shaped body portion, a through hole is formed in a side portion of the body portion, the baffle plate is movably disposed in the body portion, and the second elastic member is accommodated in the body portion.

In one embodiment, the second blocking portion is formed by extending outward from an end of the body portion close to the partition plate, and the second through hole is disposed on a peripheral side of the first through hole.

In one embodiment, the first chamber is further provided with a driving part, and the driving part is connected with the moving part; the driving part can drive the moving part to move in the direction away from the partition plate, so that the second through hole is opened.

In one embodiment, the driving part includes a motor; alternatively, the first and second electrodes may be,

the driving part comprises an electromagnetic coil, a first magnetic part and a second magnetic part, the first magnetic part is fixed in the electromagnetic coil, and the second magnetic part is movably positioned in the electromagnetic coil and is connected with the moving part; the first magnetic part and the second magnetic part are magnetic parts which can be magnetized in a magnetic field;

when the electromagnetic coil is electrified, the first magnetic piece generates magnetic attraction force on the second magnetic piece to drive the second magnetic piece and the moving part to move in the direction back to the partition plate; when the electromagnetic coil is powered off, the magnetic attraction of the first magnetic piece to the second magnetic piece disappears.

In one embodiment, the oil tank isolation valve further comprises a supporting part and a first elastic piece; the abutting part is fixed in the first cavity, one end of the first elastic piece abuts against the abutting part, and the other end of the first elastic piece abuts against the moving part;

when the driving part comprises an electromagnetic coil, a first magnetic part and a second magnetic part, the first magnetic part and the abutting part are of an integral structure, the abutting part abuts against the wall of the shell, an annular groove is formed in the outer side of the abutting part, and an annular sealing piece is arranged in the annular groove.

In one embodiment, the first blocking portion comprises a first plate portion and at least a first sealing structure located on a side of the first plate portion adjacent to the partition; and/or the second blocking part comprises a second plate part and a second sealing structure at least positioned on one side, close to the partition plate, of the second plate part.

According to a second aspect of the embodiments of the present application, there is provided an oil tank system, comprising an oil tank, an oil-gas adsorption and desorption device, and the oil tank isolation valve;

the oil tank with the first intercommunication mouth of oil tank isolating valve is connected, the oil gas adsorbs desorption device with the second intercommunication mouth of oil tank isolating valve is connected.

According to a third aspect of embodiments of the present application, there is provided a vehicle including the above-described tank system.

According to the oil tank isolation valve, the oil tank system and the vehicle provided by the embodiment of the application, the first through hole and the second through hole are formed in the partition plate, when the pressure of oil gas in the oil tank is greater than a first threshold value, the oil gas entering the first cavity pushes the first blocking part to move in the direction away from the partition plate, so that the first through hole is opened, the oil gas in the oil tank can enter the oil gas adsorption and desorption device through the first through hole to be adsorbed, and the pressure in the oil tank is prevented from being too high; when the pressure of the oil gas in the oil tank is greater than a first threshold value, the first through hole is opened, when the pressure of the oil gas in the oil tank is less than the first threshold value, the first through hole is not opened, the oil gas in the oil tank is temporarily stored in the oil tank, and the environmental pollution caused by the saturation of the oil gas adsorbed by the oil gas adsorption and desorption device can be avoided to a certain extent; when oil tank pressure is less than the second threshold value, the outside air that enters into the second cavity promotes the direction removal of second shutoff portion to keeping away from the baffle, makes the second through-hole open to but outside air through-hole second through-hole and first cavity enter into the oil tank, prevent that the oil tank internal pressure is low and lead to the oil tank to take place to warp.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic perspective view of a tank isolation valve according to an embodiment of the present disclosure;

FIG. 2 is a schematic perspective exploded view of the tank isolation valve of FIG. 1;

FIG. 3 is a cross-sectional view of the tank isolation valve of FIG. 1 in a first state;

FIG. 4 is a cross-sectional view of the tank isolation valve of FIG. 1 in a second state;

FIG. 5 is a cross-sectional view of the tank isolation valve of FIG. 1 in a third condition;

FIG. 6 is a cross-sectional view of the internal structure of the tank isolation valve shown in FIG. 1;

fig. 7 is a schematic perspective view of the structure shown in fig. 6.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

The tank isolation valve, the tank system and the vehicle according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

Fig. 1 is a schematic perspective view of a tank isolation valve according to an embodiment of the present disclosure; FIG. 2 is a schematic perspective exploded view of the tank isolation valve of FIG. 1; FIG. 3 is a cross-sectional view of the tank isolation valve of FIG. 1 in a first state; FIG. 4 is a cross-sectional view of the tank isolation valve of FIG. 1 in a second state; FIG. 5 is a cross-sectional view of the tank isolation valve of FIG. 1 in a third condition; FIG. 6 is a cross-sectional view of the internal structure of the tank isolation valve shown in FIG. 1; fig. 7 is a schematic perspective view of the structure shown in fig. 6.

The embodiment of the application provides an oil tank isolating valve. Referring to fig. 1 to 7, the tank isolation valve 100 includes a housing 10, a first blocking portion 20, and a moving portion 30.

The shell 10 is provided with a first communication port 101 and a second communication port 102, the first communication port 101 is used for being connected with an oil tank, and the second communication port 102 is used for being connected with a hydrocarbon adsorption and desorption device. A partition plate 103 is disposed in the housing 10, and the partition plate 103 divides the inner cavity of the housing 10 into a first chamber 104 and a second chamber 105. The first chamber 104 communicates with the first communication port 101, and the second chamber 105 communicates with the second communication port 102. The partition plate 103 is provided with a first through-hole 1031 and a second through-hole 1032. The first blocking portion 20 is located in the second chamber 105, and the first blocking portion 20 is used for blocking the first through hole 1031. The first stopper 20 is movable within the second chamber 105. The moving part 30 is located in the first chamber 104, and the moving part 30 is provided with a second blocking part 31 for blocking the second through hole 1032.

Since the tank communicates with the first chamber 104 through the first communication port 101, the pressure of the first chamber 104 is the same as the pressure of the tank. Since the adsorption and desorption device is communicated with the second chamber 105 through the second communication port 102 and the adsorption and desorption device is communicated with the atmosphere, the pressure of the second chamber 105 is the same as the atmospheric pressure. When the pressure of the oil gas in the oil tank is greater than a first threshold value, the oil gas entering the first chamber 104 pushes the first blocking portion 20 to move in a direction away from the partition plate 103, so that the first through hole 1031 is opened. When the pressure in the oil tank is smaller than a second threshold value, the external air entering the second chamber 105 through the oil-gas adsorption and desorption device pushes the second blocking part 31 to move in the direction away from the partition plate 103, so that the second through hole 1032 is opened.

According to the oil tank isolation valve 100 provided by the embodiment of the application, the first through hole 1031 and the second through hole 1032 are arranged on the partition plate 103, when the pressure of oil gas in the oil tank is greater than a first threshold value, the oil gas entering the first chamber 104 pushes the first blocking part 20 to move in the direction away from the partition plate 103, so that the first through hole 1031 is opened, the oil gas in the oil tank can enter the oil gas adsorption and desorption device through the first through hole 1031 to be adsorbed, and the over-high pressure in the oil tank is avoided; when the pressure of the oil gas in the oil tank is greater than a first threshold value, the first through hole 1031 is opened, when the pressure of the oil gas in the oil tank is less than the first threshold value, the first through hole 1031 is not opened, the oil gas in the oil tank is temporarily stored in the oil tank, and the environmental pollution caused by the saturation of the oil gas adsorbed by the oil gas adsorption and desorption device can be avoided to a certain extent; when the pressure of the oil tank is smaller than the second threshold value, the external air entering the second chamber 105 pushes the second blocking part 31 to move in the direction away from the partition plate 103, so that the second through hole 1032 is opened, the external air can enter the oil tank through the second through hole 1032 and the first chamber 104, and the deformation of the oil tank caused by the excessively low pressure in the oil tank is prevented.

In the embodiment of the application, the first threshold is larger than the second threshold, and the hydrocarbon adsorption and desorption device is communicated with the outside air. When the air pressure in the oil tank is greater than the first threshold value, that is, the pressure of the oil gas entering the first chamber 104 on the first blocking portion 20 is greater than the pressure of the outside air on the first blocking portion 20, so that the oil gas entering the first chamber 104 can push the first blocking portion 20 to move the first blocking portion 20 in a direction away from the partition 103.

In one embodiment, the tank isolation valve 100 further includes a supporting portion 621 and a first elastic member 41. The supporting portion 621 is fixed to the first chamber 104, the first elastic member 41 is located in the first chamber 104, one end of the first elastic member 41 abuts against the supporting portion 621, and the other end abuts against the moving portion 30. When the pressure in the tank is lower than the second threshold value, the second blocking portion 31 moves away from the partition 103, the first elastic member 41 is compressed, and the second through hole 1032 opens, so that the tank isolation valve 100 is in the second state as shown in fig. 4. When the pressure in the oil tank is greater than the second threshold value, the first elastic member 41 stretches to drive the second blocking portion 31 to abut against the partition plate 103, and the second blocking portion 31 blocks the second through hole 1032. Wherein the first elastic member 41 may be a spring. When the second blocking portion 31 blocks the second through hole 1032, the elastic force of the first elastic member 41 is a first elastic force, and the second threshold value is equal to the difference between the atmospheric pressure and the first elastic force.

By arranging the first elastic member 41, when the pressure in the oil tank is smaller than the second threshold value, the external air entering the second chamber 105 through the oil-gas adsorption and desorption device exerts an acting force on the second blocking part 31 through the second through hole 1032, so that the second blocking part 31 moves in the direction away from the partition plate 103 to open the second through hole 1032, and the external air can enter the oil tank through the oil-gas adsorption and desorption device, the second chamber 105, the second through hole 1032 and the first chamber 104 in sequence; when the pressure in the oil tank is greater than the second threshold value, the difference between the pressure of the external air to the second blocking portion 31 and the pressure of the oil gas in the first chamber 104 to the second blocking portion 31 is smaller than the elastic force of the first elastic member 41, then the first elastic member 41 stretches, the second blocking portion 31 is driven to abut against the partition plate 103, the second blocking portion 31 blocks the second through hole 1032, the oil gas in the oil tank is prevented from continuously entering the oil gas adsorption and desorption device through the second through hole 1032, and the adsorption capacity of the oil gas adsorption and desorption device is saturated.

In one embodiment, the tank isolation valve 100 further comprises a second elastic member 42, the second elastic member 42 is located in the first chamber 104, the tank isolation valve 100 further comprises a baffle 43 movably disposed in the first chamber 104, one end of the second elastic member 42 abuts against the baffle 43, and the other end abuts against the partition 103; the first closing portion 20 is connected to the baffle 43. When the pressure of oil gas in the oil tank is greater than the first threshold value, the first blocking part 20 moves in the direction away from the partition 103, and the second elastic element 42 is compressed; when the pressure of the oil gas in the oil tank is smaller than the first threshold value, the second elastic member 42 stretches to drive the first blocking portion 20 to abut against the partition plate 103, and the first blocking portion 20 blocks the first through hole 1031. Wherein the second elastic member 42 may be a spring. When the first blocking portion 20 blocks the first through hole 1031, the elastic force of the second elastic member 42 is a second elastic force, and the first threshold value is equal to the sum of the atmospheric pressure and the second elastic force.

Through the arrangement of the second elastic member 42 and the baffle 43, when the pressure in the first chamber 104 is greater than the first threshold value, the first blocking portion 20 and the baffle 43 move in the direction away from the partition 103 to open the first through hole 1031, the second elastic member 42 is compressed, the tank isolation valve 100 is in the first state as shown in fig. 3, and the oil gas in the oil tank can enter the oil gas adsorption and desorption device through the first chamber 104, the first through hole 1031 and the second chamber 105 in sequence to be adsorbed, so that the pressure of the oil gas in the oil tank is prevented from being too high. When the pressure in the oil tank is smaller than the first threshold value, the difference between the pressure of the oil gas on the first blocking portion 20 and the pressure of the external air on the first blocking portion 20 is smaller than the elastic force of the second elastic member 42, the second elastic member 311 stretches, and drives the first blocking portion 20 to abut against the partition plate 103, so that the first blocking portion 20 blocks the first through hole 1031, and the problem that the adsorption capacity of the oil gas adsorption and desorption device is saturated due to the fact that the oil gas in the oil tank continues to enter the oil gas adsorption and desorption device through the first through hole 1031 is avoided.

In one embodiment, the first blocking portion 20 includes a first plate portion 201 and at least a first sealing structure 202 located on a side of the first plate portion 201 adjacent to the partition 103. So set up, can make first shutoff portion 20 better with first through-hole 1031 shutoff effect, avoid gaseous emergence to reveal. In some embodiments, the first sealing structure 202 may be formed on the surface of the first plate portion 201 through an injection molding process, which may make the first sealing structure 202 and the first plate portion 201 more firmly connected. The first sealing structure 202 may be planar, and the surface thereof is provided with a protrusion.

In one embodiment, the second blocking portion 31 includes a second plate portion 311 and at least a second sealing structure 312 located on a side of the second plate portion 311 adjacent to the partition 103. So set up, can make second shutoff portion 31 better with second through-hole 1032 shutoff effect, avoid gaseous emergence to reveal. The second sealing structure 312 may cover the second blocking portion 31. In some embodiments, the second sealing structure 312 may be formed on the surface of the second plate portion 311 through an injection molding process, so that the second sealing structure 312 and the second plate portion 311 are more firmly connected. Wherein the second sealing structure 312 may be bowl-shaped.

In one embodiment, the moving portion 30 includes a ring-shaped main body 32, a through hole is provided on a side portion of the main body 32, the baffle 43 is movably disposed in the main body 32, and the second elastic member 42 is accommodated in the main body 32. With such an arrangement, the arrangement of the baffle plate 43 and the body portion 32 is reasonable, which facilitates to reduce the space occupied by the second elastic member 42, the body portion 32 and the baffle plate 43, and further, the size of the tank isolation valve 100 can be reduced. By providing the through-holes in the side walls of the body portion 32, the gas can pass through the through-holes of the body portion 32, and the provision of the body portion 32 does not affect the flow of the gas. The first elastic element 41 can be sleeved on the body portion 32, so as to further save the space of the first chamber 104. When the second elastic member 42 is stretched, the baffle 43 can be abutted against the inside of the main body 32.

In one embodiment, the baffle 43 and the first blocking portion 20 may be connected by a connecting rod 21, the size of the connecting rod 21 is smaller than that of the first through hole 1031, and when the first through hole 1031 is opened, oil and gas may enter the second chamber 105 through a gap between the first through hole 1031 and the connecting rod 21. The first blocking portion 20 has a size larger than that of the first through hole 1031, and blocks the first through hole 1031 when the first blocking portion 20 abuts against the partition plate 103. In some embodiments, the baffle 43, the first blocking portion 20, and the connecting rod 21 may be integrally formed.

In one embodiment, the second blocking portion 31 is formed by extending an end of the main body portion 32 close to the partition plate 103, and the second through hole 1032 is disposed on a peripheral side of the first through hole 1031. Specifically, the second plate portion 311 of the second blocking portion 31 is formed by extending outward from one end of the body portion 32 near the partition plate 103. With such an arrangement, the second blocking portion 31 and the main body portion 32 can be integrally formed, which is beneficial to manufacturing the second blocking portion 31 and the main body portion 32, and can simplify the complexity of the internal structure of the housing 10 to a certain extent; the arrangement mode of the first through hole 1031 and the second through hole 1032 can realize the matching of the first through hole 1031 and the second through hole 1032 with the first blocking part 20 and the second blocking part 31, and the occupied space of the structure in the first cavity is reduced. In this embodiment, the first elastic member 41 may abut against the second blocking portion 31.

In some embodiments, the number of the second through holes 1032 may be plural, and the plurality of second through holes 1032 are spaced around the first through holes 1031. The number of second through holes 1032 may be, for example, six, five, etc. In other embodiments, the second through hole 1032 may be an annular hole disposed around the first through hole 1031.

In one embodiment, the first chamber 104 is further provided with a driving part 60, and the driving part 60 is connected with the moving part 30; the driving portion 60 can drive the moving portion 30 to move away from the partition 103, so that the second through hole 1032 is opened. Through setting up drive division 60, when need refuel in to the oil tank and oil tank internal pressure is less than first threshold value, accessible drive division 60 drives removal portion 30 and removes and make second through-hole 1032 open, and then the oil gas accessible second through-hole 1032 in the oil tank enters into oil gas adsorption desorption device and is adsorbed, reduces the gas quantity that the oil gas in the oil tank removed the outside air among the refueling process, helps reducing environmental pollution, and can promote the utilization ratio of oil gas.

In one embodiment, the driving portion 60 includes an electromagnetic coil 61, a first magnetic member 62 and a second magnetic member 63, the first magnetic member 62 is fixed in the electromagnetic coil 61, and the second magnetic member 63 is movably located in the electromagnetic coil 61 and connected to the moving portion 30. When the electromagnetic coil 61 is energized, the first magnetic member 62 generates a magnetic attraction force on the second magnetic member 63, and drives the second magnetic member 63 and the moving portion 30 to move in a direction away from the partition 103, and at this time, the tank isolation valve 100 is in the third state as shown in fig. 5. When the electromagnetic coil 61 is de-energized, the magnetic attraction of the first magnetic member 62 to the second magnetic member 63 disappears. The first magnetic member 62 is located on a side of the second magnetic member 63 facing away from the partition 103, and the second magnetic member 63 is located on a side of the moving part 30 facing away from the partition 103.

So set up, when needing to refuel the oil tank, can be to solenoid 61 circular telegram, make second magnetism piece 63 drive removal portion 30 and remove to the direction of keeping away from baffle 103, and then second shutoff portion 31 deviates from baffle 103, and second through-hole 1032 is opened, and oil gas in the oil tank enters into second cavity 105 through second through-hole 1032 and is adsorbed by oil gas adsorption desorption device, and oil gas escapes and polluted environment when preventing to open the oil tank lid. That is, whether the second through hole 1032 is opened or not can be controlled by controlling the on/off of the electromagnetic coil 61, which is convenient for operation.

In other embodiments, the driving portion 60 includes a motor, the motor can drive the moving portion 30 to move, the motor has two working states, in the first working state, the motor drives the moving portion 30 to move in a direction away from the partition 103, so that the second through hole 1032 is opened; in the second state, the motor drives the moving portion 30 to move in a direction approaching the partition plate 103, so that the second blocking portion 31 blocks the second through hole 1032. The opening or the blocking of the second through hole 1032 can be realized by controlling the working state of the motor, so that the operation is convenient.

In one embodiment, the first magnetic member 62 and the second magnetic member 63 are magnetic members that can be magnetized in a magnetic field. Thus, when the electromagnetic coil is energized, the first magnetic member 62 generates a magnetic attraction force on the second magnetic member; when the electromagnetic coil is de-energized, the magnetic attraction of the first magnetic member 62 to the second magnetic member disappears. In some embodiments, the material of the first and second

magnetic members

62 and 63 may be iron.

In one example, when the first elastic member 41 is disposed in the oil tank isolation valve, when the moving portion 30 moves in a direction away from the partition 103, the first elastic member 41 is compressed, the electromagnetic coil 61 is powered off, the magnetic attraction of the first magnetic member 62 to the second magnetic member 63 disappears, the first elastic member 41 stretches to drive the moving member 30 to move in a direction close to the partition 103, the second blocking portion 31 blocks the second through hole 1032, at this time, the oil tank can be filled with oil, and the oil gas in the oil tank filling process is prevented from entering the second chamber 105 through the second through hole 1032 and leaking.

In one embodiment, the second magnetic member 63 may have a connecting rod portion 631 and an expanded portion 632 disposed at an end of the connecting rod portion 631 at an end facing away from the first magnetic member 62, the main body portion 32 has a receiving portion 33 at a side facing away from the partition 103, and a wall of the receiving portion 33 has an opening smaller than the expanded portion 632. The expansion portion 632 is accommodated in the accommodating portion 33, and the link portion 631 can move in the opening of the accommodating portion 33. When the electromagnetic coil 61 is not energized and the moving portion 30 moves in a direction away from the partition 103, the link portion 631 remains stationary and the moving portion 30 moves relative to the link portion 631 and the enlarged portion 632. When the electromagnetic coil 61 is energized, the second magnetic member 63 moves in a direction approaching the first magnetic member 62, and the expanded portion 632 abuts against the wall of the accommodating portion 33, so that the second magnetic member 63 moves together with the moving portion 30.

In one embodiment, the electromagnetic coil 61 includes an insulating tube 611 and a coil 612 wound on the insulating tube 611. The first magnetic member 62 and the second magnetic member 63 are located in the insulating tube 611.

In one embodiment, the first magnetic element 62 and the supporting portion 621 are an integral structure. Thus, the assembly of the first magnetic element 62 and the abutting portion 621 is facilitated. The abutting portion 621 abuts against the wall of the casing, an annular groove is formed in the side portion of the abutting portion 621, an annular sealing ring 53 is arranged in the annular groove, the arrangement of the annular sealing ring 53 can improve the sealing performance of the first cavity 104, and leakage of oil gas in the first cavity 104 is prevented.

In one embodiment, the tank isolation valve further includes a support portion 53 located in the first chamber 104, and one end of the support portion 53 abuts against the abutting portion 621, and the other end abuts against the partition 103. The first magnetic element 62 and the abutting portion 621 are an integral structure, so that the supporting portion 53 can support the first magnetic element 62 to prevent the first magnetic element 62 from moving.

In one embodiment, the housing 10 is assembled by a first housing part 11, a second housing part 12 and a third housing part 13, two ends of the second housing part 12 are respectively connected with the first housing part 11 and the third housing part 13, and the first housing part 11 can be connected with the second housing part 12 and the third housing part 13 by a buckle. In this manner, assembly of the internal structure of the housing 10 is facilitated. The partition 103 may be provided in the second housing 12, the first communication port 101 may be provided on a side wall of the second housing 12, and the second communication port 102 may be provided on a wall of the first housing 11.

Therefore, the oil tank isolation valve 100 provided by the embodiment of the present application can realize three functions of releasing air to the hydrocarbon adsorption and desorption device through the driving portion 60 when the pressure in the oil tank is smaller than the first threshold value, and when the pressure in the oil tank is smaller than the second threshold value, the air is supplied to the hydrocarbon adsorption and desorption device when the pressure in the oil tank is smaller than the first threshold value and the oil tank needs to be opened. And for the scheme that sets up solenoid valve, release valve and gulp valve separately, the oil tank isolating valve 100 that this application embodiment provided compact structure, the structure is fairly simple, and the volume is less, assembles fairly simply.

The embodiment of the application also provides an oil tank system. The oil tank system comprises an oil tank, an oil-gas adsorption and desorption device and the oil tank isolating valve 100 in any one of the embodiments. The oil tank is connected with a first communication port 101 of the oil tank isolation valve 100, and the oil-gas adsorption and desorption device is connected with a second communication port 102 of the oil tank isolation valve 100.

In one embodiment, the hydrocarbon adsorbing and desorbing device is a carbon canister, activated carbon in the carbon canister can adsorb the hydrocarbon, and the hydrocarbon in the carbon canister can be sent to the transmitter and combusted together with fresh air after the engine is started.

The embodiment of the application also provides a vehicle, which comprises the oil tank system in the embodiment.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

The disclosure of this patent document contains material which is subject to copyright protection. The copyright is owned by the copyright owner. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the patent and trademark office official records and records.

Claims

1. A tank isolation valve, comprising:

2. The tank isolation valve of claim 1 further comprising a retaining portion and a first resilient member; the abutting part is fixed in the first cavity, the first elastic piece is positioned in the first cavity, one end of the first elastic piece abuts against the abutting part, and the other end of the first elastic piece abuts against the moving part;

3. The tank isolation valve of claim 1 further comprising a second resilient member disposed within said first chamber, said tank isolation valve further comprising a baffle movably disposed within said first chamber, said second resilient member having one end abutting said baffle and an opposite end abutting said barrier; the first plugging part is connected with the baffle;

4. The tank isolation valve according to claim 3 wherein said movable portion comprises an annular body portion, a side portion of said body portion having a through hole, said flapper being movably disposed within said body portion, said second resilient member being received within said body portion.

5. The tank isolation valve according to claim 4, wherein the second blocking portion is formed by extending outward from an end of the body portion near the partition plate, and the second through hole is provided on a peripheral side of the first through hole.

6. The tank isolation valve according to claim 1 wherein said first chamber is further provided with a drive portion, said drive portion being connected to said moving portion; the driving part can drive the moving part to move in the direction away from the partition plate, so that the second through hole is opened.

7. The tank isolation valve of claim 6 wherein said drive section comprises a motor; alternatively, the first and second electrodes may be,

8. The tank isolation valve of claim 7 further comprising a retaining portion and a first resilient member; the abutting part is fixed in the first cavity, one end of the first elastic piece abuts against the abutting part, and the other end of the first elastic piece abuts against the moving part;

when the driving part comprises an electromagnetic coil, a first magnetic part and a second magnetic part, the first magnetic part and the abutting part are of an integral structure, the abutting part abuts against the wall of the shell, an annular groove is formed in the side part of the abutting part, and an annular sealing piece is arranged in the annular groove.

9. The tank isolation valve according to claim 1, wherein the first blocking portion includes a first plate portion and at least a first seal structure located on a side of the first plate portion adjacent to the partition; and/or the second blocking part comprises a second plate part and a second sealing structure at least positioned on one side, close to the partition plate, of the second plate part.

10. A fuel tank system comprising a fuel tank, a hydrocarbon adsorption and desorption device and a fuel tank isolation valve as claimed in any one of claims 1 to 9;

11. A vehicle comprising the fuel tank system of claim 10.