CN210686999U - High-pressure-resistant oil tank isolating valve - Google Patents
High-pressure-resistant oil tank isolating valve Download PDFInfo
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- CN210686999U CN210686999U CN201921139617.6U CN201921139617U CN210686999U CN 210686999 U CN210686999 U CN 210686999U CN 201921139617 U CN201921139617 U CN 201921139617U CN 210686999 U CN210686999 U CN 210686999U
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Abstract
A high-pressure-resistant oil tank isolation valve comprises an isolation valve body, a sealing ring, an electric control wire, a valve body air inlet pipe, a flow guide partition plate and a valve body air outlet pipe; the isolation valve body comprises a shell, a movable pipe, a coil and a moving iron valve core, wherein a sealing ring is arranged on the inner side wall of the shell, and the movable pipe is matched with the sealing ring to realize fixation with the shell; the coil is circumferentially arranged on the outer side wall of the movable pipe in a surrounding manner; the moving iron valve core is arranged in the shell and is arranged with the isolating valve body in a sliding way; the electric control wire is electrically connected with the coil; the valve body air inlet pipe is arranged on one side of the valve body of the isolating valve; the diversion baffle plate is arranged at one end of the inner wall of the air inlet pipe of the valve body; the valve body outlet duct sets up in isolating valve body bottom. The utility model has lower manufacturing cost and small appearance volume; when exhausting under different working conditions, the pressure in the oil tank keeps stable, and the exhaust is smooth.
Description
Technical Field
The utility model relates to a car fuel system field, especially a high pressure resistant oil tank isolating valve.
Background
The gasoline in the oil tank is volatilized to generate oil vapor which enters the carbon canister and is adsorbed on the active carbon in the carbon canister; when a conventional fuel oil automobile runs, negative pressure is formed in the engine and oil vapor is desorbed from the activated carbon and is sucked into the engine for combustion, so that the more the oil vapor in the carbon tank is accumulated, the overflow of the oil vapor outside causes environmental pollution. If the vehicle is a plug-in hybrid electric vehicle, the engine does not work for a long time, negative pressure cannot be formed in the engine, so that oil vapor cannot be desorbed from the activated carbon to enter the engine under the influence of the negative pressure, the oil vapor volatilized by gasoline can continuously enter the carbon canister, and the activated carbon in the carbon canister overflows to the outside to pollute the environment after being adsorbed and saturated; in order to prevent environment pollution, a 'tank isolating valve' is needed to be added between a fuel tank and a carbon canister, namely, when a vehicle runs or stops by using a battery-driven motor, the 'tank isolating valve' is in a closed state to prevent oil vapor in the fuel tank from entering the carbon canister, but because the fuel tank is airtight, the fuel tank cannot be exhausted, the pressure in the fuel tank can be increased along with the temperature change and violent shaking of the fuel tank, when the internal pressure of the fuel tank reaches about 35kPa, the bearing range of the fuel tank is exceeded, and for safety, the 'tank isolating valve' opens the exhaust at high pressure to restore the pressure in the fuel tank to a normal value, the high-flow oil vapor in the fuel tank needs to be exhausted from a liquid level control valve (FLVV) under the pressure state, about 200L/min, but because the 'FLVV' is a mechanical valve, the suction force generated by the overhigh flow can push a valve core floater of the FLVV upwards to close the FLVV, the oil tank cannot be continuously exhausted, and the defect can be avoided by using the oil tank isolating valve. When the automobile is refueled, the oil tank isolating valve is opened, so that the refueled oil is smoothly discharged from the carbon tank, and the refueled oil smoothness is met; when the electric quantity of the automobile battery is used up and the engine works, the 'oil tank isolating valve' opens the exhaust. The opening and closing of the valve body are controlled by the existing oil tank isolation valve structure, the pressure relief pressure cannot be adjusted according to the pressure in the oil tank in the pressure relief process, the pressure in the pressure relief process is unstable, and the pressure in the oil tank cannot keep a stable value.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of the existence, the utility model discloses a high pressure resistant oil tank isolating valve, its concrete technical scheme as follows: a high-pressure-resistant oil tank isolation valve comprises an isolation valve body, a sealing ring, an electric control wire, a valve body air inlet pipe, a flow guide partition plate and a valve body air outlet pipe;
the isolating valve body comprises a shell, a movable pipe, a coil and a moving iron valve core, wherein the shell is cylindrical and has a hollow structure, the movable pipe is of a circular tubular structure, the center of the movable pipe is in a through hole shape to form an upper channel of the valve core, the movable pipe is arranged in the shell, the top end and the bottom end of the movable pipe are in an outward turnover structure, the sealing ring is arranged on the inner side wall of the shell, and the movable pipe is matched with the sealing ring to be fixed with the shell; the coil is circumferentially arranged on the outer side wall of the movable tube in a surrounding manner, and the coil and the movable tube realize transverse limiting; the bottom end in the shell and the bottom surface of the movable pipe form a cavity-shaped structure to form a lower channel of the valve core; the moving iron valve core is arranged in the shell and comprises an upper valve core and a lower valve core, the upper valve core is arranged at the top end of the lower valve core, and the upper valve core and the lower valve core are vertically and fixedly connected to form an integrated structure; the upper valve core and the upper valve core channel are arranged in a sliding manner, and the lower valve core channel are arranged in a sliding manner; the electric control wire is arranged on one side of the isolation valve body and is electrically connected with the coil;
the valve body air inlet pipe is arranged on one side of the valve body of the isolation valve, is vertically and fixedly connected with the valve body of the isolation valve and is of an integrated structure, one end of the valve body air inlet pipe is communicated with the side surface of the lower channel of the valve core, and the valve body air inlet pipe is communicated with an oil tank and the lower channel of the valve core; the flow guide partition plate is arranged at one end of the inner wall of the valve body air inlet pipe, the flow guide partition plate is transversely arranged and is parallel to the valve body air inlet pipe, two side edges of the flow guide partition plate are fixedly connected with the inner wall of the valve body air inlet pipe, and one end of the flow guide partition plate is flush with the side wall of the lower channel of the valve core; the valve body air outlet pipe is arranged at the bottom end of the valve body of the isolation valve and fixedly connected with the valve body of the isolation valve to form an integral structure, one end of the valve body air outlet pipe is bent and communicated with the bottom end of the lower valve element channel, and the valve body air outlet pipe is communicated with the lower valve element channel and the carbon canister.
Furthermore, the inner diameter of the coil is adapted to the outer diameter of the movable tube, the height of the coil is adapted to the height of the movable tube, and the top end and the bottom end of the coil are circumferentially positioned through the two ends of the movable tube.
Furthermore, the side wall of the bottom end of the lower channel of the valve core is of an arc-shaped structure which is bent inwards.
Furthermore, the upper valve core is of a cylindrical structure, the outer diameter of the upper valve core is matched with the inner diameter of the upper channel of the valve core, and the length of the upper valve core is matched with the depth of the upper channel of the valve core.
Furthermore, the lower valve core is of a cylindrical structure, the outer diameter of the lower valve core is larger than that of the upper valve core and is adapted to the inner diameter of a lower channel of the valve core, and the length of the lower valve core is shorter than the depth of the lower channel of the valve core; the bottom edge of the lower valve core is in an arc shape in the circumferential direction and is matched with the side wall of the bottom end of the lower channel of the valve core in shape.
Furthermore, the flow guide partition plate is arranged at the center of the section of the air inlet pipe of the valve body; the flow guide partition plate is of a plate-shaped structure with one thin end and one thick end.
Furthermore, the valve body air outlet pipe and the valve body air inlet pipe are arranged in opposite directions.
The utility model has the advantages that:
the utility model has the advantages that the whole structure is simple and reasonable, and the manufacturing cost is lower by improving the structure of the oil tank isolation valve; the oil tank isolation valve adopts relatively few parts, so that the overall size of the whole device is reduced, and the installation space of the chassis is saved; this isolating valve case subassembly is through adopting the solenoid and moving the magnetic force effect size between the iron case, according to the change of isolating valve body internal pressure, the automatic passageway that changes moving iron case and valve body intake pipe opens and shuts the size, can be to under multiple complicated operating modes such as high-pressure exhaust, negative pressure tonifying qi, refuel the exhaust, adjust the passageway and open and shut the size and satisfy the exhaust requirement under the different operating modes, lightened the load of charcoal jar, and can keep the oil tank internal pressure stable all the time under the exhaust state, satisfy the oil tank and use the smooth and easy nature of exhausting, improved the security performance that the oil tank used.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a cross-sectional view of the moving iron valve element of the present invention in a fully closed state.
Fig. 3 is a cross-sectional view of the moving iron valve core of the present invention in a single-channel open state.
Fig. 4 is a cross-sectional view of the moving iron valve core of the present invention in a dual-channel fully open state.
Fig. 5 is a graph showing the pressure inside the tank in a typical tank isolation valve venting condition.
Fig. 6 is a pressure curve diagram of the oil tank in the pressure relief state of the oil tank isolating valve of the present invention.
List of reference numerals: the valve comprises an isolation valve body 1, a shell 1-1, a valve core upper channel 1-11, a valve core lower channel 1-12, a movable pipe 1-2, a coil 1-3, a moving iron valve core 1-4, an upper valve core 1-41, a lower valve core 1-42, a sealing ring 2, an electric control line 3, a valve body air inlet pipe 4, a flow guide partition plate 5 and a valve body air outlet pipe 6.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The fixed connection, the fixed arrangement and the fixed structure mentioned in the embodiment are all known technologies known by those skilled in the art, such as welding, hot-melt integral molding, and the like.
The high-pressure-resistant oil tank isolation valve comprises an isolation valve body, a sealing ring, an electric control wire, a valve body air inlet pipe, a flow guide partition plate and a valve body air outlet pipe;
the isolating valve body comprises a shell, a movable pipe, a coil and a moving iron valve core, wherein the shell is cylindrical and has a hollow structure, the movable pipe is of a circular tubular structure, the center of the movable pipe is in a through hole shape to form an upper channel of the valve core, the movable pipe is arranged in the shell, the top end and the bottom end of the movable pipe are in an outward turnover structure, the sealing ring is arranged on the inner side wall of the shell, and the movable pipe is matched with the sealing ring to be fixed with the shell; the coil is circumferentially arranged on the outer side wall of the movable tube in a surrounding manner, and the coil and the movable tube realize transverse limiting; the bottom end in the shell and the bottom surface of the movable pipe form a cavity-shaped structure to form a lower channel of the valve core; the moving iron valve core is arranged in the shell and comprises an upper valve core and a lower valve core, the upper valve core is arranged at the top end of the lower valve core, and the upper valve core and the lower valve core are vertically and fixedly connected to form an integrated structure; the upper valve core and the upper valve core channel are arranged in a sliding manner, and the lower valve core channel are arranged in a sliding manner; the electric control wire is arranged on one side of the isolation valve body and is electrically connected with the coil;
the valve body air inlet pipe is arranged on one side of the valve body of the isolation valve, is vertically and fixedly connected with the valve body of the isolation valve and is of an integrated structure, one end of the valve body air inlet pipe is communicated with the side surface of the lower channel of the valve core, and the valve body air inlet pipe is communicated with an oil tank and the lower channel of the valve core; the flow guide partition plate is arranged at one end of the inner wall of the valve body air inlet pipe, the flow guide partition plate is transversely arranged and is parallel to the valve body air inlet pipe, two side edges of the flow guide partition plate are fixedly connected with the inner wall of the valve body air inlet pipe, and one end of the flow guide partition plate is flush with the side wall of the lower channel of the valve core; the valve body air outlet pipe is arranged at the bottom end of the valve body of the isolation valve and fixedly connected with the valve body of the isolation valve to form an integral structure, one end of the valve body air outlet pipe is bent and communicated with the bottom end of the lower valve element channel, and the valve body air outlet pipe is communicated with the lower valve element channel and the carbon canister.
Furthermore, the inner diameter of the coil is adapted to the outer diameter of the movable tube, the height of the coil is adapted to the height of the movable tube, and the top end and the bottom end of the coil are circumferentially positioned through the two ends of the movable tube.
Furthermore, the side wall of the bottom end of the lower channel of the valve core is of an arc-shaped structure which is bent inwards.
Furthermore, the upper valve core is of a cylindrical structure, the outer diameter of the upper valve core is matched with the inner diameter of the upper channel of the valve core, and the length of the upper valve core is matched with the depth of the upper channel of the valve core.
Furthermore, the lower valve core is of a cylindrical structure, the outer diameter of the lower valve core is larger than that of the upper valve core and is adapted to the inner diameter of a lower channel of the valve core, and the length of the lower valve core is shorter than the depth of the lower channel of the valve core; the bottom edge of the lower valve core is in an arc shape in the circumferential direction and is matched with the side wall of the bottom end of the lower channel of the valve core in shape.
Furthermore, the flow guide partition plate is arranged at the center of the section of the air inlet pipe of the valve body; the flow guide partition plate is of a plate-shaped structure with one thin end and one thick end.
Furthermore, the valve body air outlet pipe and the valve body air inlet pipe are arranged in opposite directions.
The structure principle of the utility model is that:
the device is arranged between an oil tank and a carbon canister; (1) when the device is in a natural state, the power control wire is not connected, the coil is not powered, the moving iron valve core is positioned at the lowest end of the valve body of the isolation valve, the isolation valve is in a closed state, and the oil tank and the carbon canister are in an isolated state;
(2) when the pressure in the oil tank is overhigh due to factors such as temperature change or shaking of the oil tank, the device is in a high-pressure opening state, an electric control line is switched on, a coil is electrified, an upper valve core moves towards the top end in an upper channel of a valve core, a lower valve core moves towards the top end in a lower channel of the valve core, the isolation valve is in a fully-opened state until the movable iron valve core moves to the topmost end of a valve body of the isolation valve under the action of magnetic force, the oil tank and a carbon canister are in the fully-opened state, and the pressure in the oil tank can be released;
(3) when the pressure in the oil tank is reduced due to factors such as gasoline use and the like, the device is in a negative pressure opening state, an electric control line is connected, a coil is electrified, a moving iron valve core moves the topmost end of a valve body of an isolation valve, the isolation valve is in a fully opening state, the oil tank and a carbon tank are in a fully opening state, external gas is replenished into the oil tank, and the negative pressure in the oil tank is filled.
(4) When the device is in an oiling opening state, the electric control wire is connected, the coil is electrified, the displacement of the oil tank is small, the coil reduces the magnetic force effect, the moving iron valve core moves towards the bottom end until the bottom surface of the lower valve core is level with the bottom surface of the diversion partition plate, the pipe diameter of the air inlet pipe of the valve body is in a half opening state and is in a single-channel opening state, and the gas in the oil tank is exhausted through the isolation valve; in this state, the risk of blocking exhaust caused by closing of the liquid level control valve due to the fact that the liquid level control valve bears large airflow is avoided;
(5) as can be seen by combining the attached figures 5-6, when the pressure in the oil tank of the present state rises to a certain value, the coil automatically adjusts and increases the magnetic force according to the pressure value in the oil tank, the moving iron valve core moves towards the top end of the valve body of the isolation valve, the air outlet pipe of the valve body is in a larger opening state, and the pressure release and the air exhaust of the air in the oil tank are accelerated; and under the condition, the liquid level control valve is ensured to be prevented from being closed due to overlarge pressure of the oil tank.
The utility model has the advantages that:
the utility model has the advantages that the whole structure is simple and reasonable, and the manufacturing cost is lower by improving the structure of the oil tank isolation valve; the oil tank isolation valve adopts relatively few parts, so that the overall size of the whole device is reduced, and the installation space of the chassis is saved; this isolating valve case subassembly is through adopting the solenoid and moving the magnetic force effect size between the iron case, according to the change of isolating valve body internal pressure, the automatic passageway that changes moving iron case and valve body intake pipe opens and shuts the size, can be to under multiple complicated operating modes such as high-pressure exhaust, negative pressure tonifying qi, refuel the exhaust, adjust the passageway and open and shut the size and satisfy the exhaust requirement under the different operating modes, the load of charcoal jar has been alleviateed, and can keep the oil tank internal pressure stable all the time under the exhaust state, the exhaust pressure can keep carrying out the steady pressure release when 15Mpa in the oil tank, satisfy the oil tank and use the smooth and easy nature of exhausting, the security.
Claims (7)
1. A high-pressure-resistant oil tank isolation valve is characterized by comprising an isolation valve body, a sealing ring, an electric control wire, a valve body air inlet pipe, a flow guide partition plate and a valve body air outlet pipe;
the isolating valve body comprises a shell, a movable pipe, a coil and a moving iron valve core, wherein the shell is cylindrical and has a hollow structure, the movable pipe is of a circular tubular structure, the center of the movable pipe is in a through hole shape to form an upper channel of the valve core, the movable pipe is arranged in the shell, the top end and the bottom end of the movable pipe are in an outward turnover structure, the sealing ring is arranged on the inner side wall of the shell, and the movable pipe is matched with the sealing ring to be fixed with the shell; the coil is circumferentially arranged on the outer side wall of the movable tube in a surrounding manner, and the coil and the movable tube realize transverse limiting; the bottom end in the shell and the bottom surface of the movable pipe form a cavity-shaped structure to form a lower channel of the valve core; the moving iron valve core is arranged in the shell and comprises an upper valve core and a lower valve core, the upper valve core is arranged at the top end of the lower valve core, and the upper valve core and the lower valve core are vertically and fixedly connected to form an integrated structure; the upper valve core and the upper valve core channel are arranged in a sliding manner, and the lower valve core channel are arranged in a sliding manner; the electric control wire is arranged on one side of the isolation valve body and is electrically connected with the coil;
the valve body air inlet pipe is arranged on one side of the valve body of the isolation valve, is vertically and fixedly connected with the valve body of the isolation valve and is of an integrated structure, one end of the valve body air inlet pipe is communicated with the side surface of the lower channel of the valve core, and the valve body air inlet pipe is communicated with an oil tank and the lower channel of the valve core; the flow guide partition plate is arranged at one end of the inner wall of the valve body air inlet pipe, the flow guide partition plate is transversely arranged and is parallel to the valve body air inlet pipe, two side edges of the flow guide partition plate are fixedly connected with the inner wall of the valve body air inlet pipe, and one end of the flow guide partition plate is flush with the side wall of the lower channel of the valve core; the valve body air outlet pipe is arranged at the bottom end of the valve body of the isolation valve and fixedly connected with the valve body of the isolation valve to form an integral structure, one end of the valve body air outlet pipe is bent and communicated with the bottom end of the lower valve element channel, and the valve body air outlet pipe is communicated with the lower valve element channel and the carbon canister.
2. The high pressure resistant fuel tank isolation valve of claim 1 wherein the coil has an inner diameter corresponding to the outer diameter of said movable tube, said coil has a height corresponding to the height of said movable tube, and the top and bottom ends of said coil are circumferentially positioned by the ends of said movable tube.
3. The high pressure resistant oil tank isolation valve of claim 1, wherein the sidewall of the bottom end of the lower channel of the valve core is of an arc structure bent inwards.
4. The high pressure resistant oil tank isolation valve of claim 1, wherein the upper valve core is of a cylindrical structure, the outer diameter of the upper valve core is adapted to the inner diameter of the upper channel of the valve core, and the length of the upper valve core is adapted to the depth of the upper channel of the valve core.
5. The high pressure resistant oil tank isolation valve of claim 1, wherein the lower valve core is cylindrical, the outer diameter of the lower valve core is larger than the outer diameter of the upper valve core and is adapted to the inner diameter of the lower channel of the valve core, and the length of the lower valve core is shorter than the depth of the lower channel of the valve core; the bottom edge of the lower valve core is in an arc shape in the circumferential direction and is matched with the side wall of the bottom end of the lower channel of the valve core in shape.
6. The high-pressure-resistant oil tank isolating valve as claimed in claim 1, wherein the flow guide partition plate is arranged at the center of the cross section of the air inlet pipe of the valve body; the flow guide partition plate is of a plate-shaped structure with one thin end and one thick end.
7. The high pressure resistant oil tank isolation valve of claim 1, wherein the valve body outlet pipe and the valve body inlet pipe are arranged in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139617.6U CN210686999U (en) | 2019-07-19 | 2019-07-19 | High-pressure-resistant oil tank isolating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139617.6U CN210686999U (en) | 2019-07-19 | 2019-07-19 | High-pressure-resistant oil tank isolating valve |
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| Publication Number | Publication Date |
|---|---|
| CN210686999U true CN210686999U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921139617.6U Active CN210686999U (en) | 2019-07-19 | 2019-07-19 | High-pressure-resistant oil tank isolating valve |
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| Country | Link |
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| CN (1) | CN210686999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117537108A (en) * | 2024-01-09 | 2024-02-09 | 靖江佳晟真空技术有限公司 | Quick and slow pumping double-flow high-vacuum angle valve |
-
2019
- 2019-07-19 CN CN201921139617.6U patent/CN210686999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117537108A (en) * | 2024-01-09 | 2024-02-09 | 靖江佳晟真空技术有限公司 | Quick and slow pumping double-flow high-vacuum angle valve |
| CN117537108B (en) * | 2024-01-09 | 2024-03-15 | 靖江佳晟真空技术有限公司 | Quick and slow pumping double-flow high-vacuum angle valve |
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| CP03 | Change of name, title or address |
Address after: 225000 7, No.8, Yangzhou Science Park Road, Yangzhou City, Jiangsu Province Patentee after: Jiuchang new energy technology (Yangzhou) Co.,Ltd. Address before: 212000 806, block B, Greenland Plaza, 455 Zaolin Road, high tech Zone, Zhenjiang City, Jiangsu Province Patentee before: Jiuchang New Energy Technology (Zhenjiang) Co.,Ltd. |
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Effective date of registration: 20210518 Address after: 225000 7, No.8, Yangzhou Science Park Road, Yangzhou City, Jiangsu Province Patentee after: Jiuchang new energy technology (Yangzhou) Co.,Ltd. Patentee after: HEBEI SHICHANG AUTO PARTS Co.,Ltd. Address before: 225000 7, No.8, Yangzhou Science Park Road, Yangzhou City, Jiangsu Province Patentee before: Jiuchang new energy technology (Yangzhou) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 225000 7, No.8, Yangzhou Science Park Road, Yangzhou City, Jiangsu Province Patentee after: Jiuchang new energy technology (Yangzhou) Co.,Ltd. Patentee after: Hebei Shichang Auto Parts Co.,Ltd. Address before: 225000 7, No.8, Yangzhou Science Park Road, Yangzhou City, Jiangsu Province Patentee before: Jiuchang new energy technology (Yangzhou) Co.,Ltd. Patentee before: HEBEI SHICHANG AUTO PARTS CO.,LTD. |