CN114017513A - Automobile oil tank isolating valve and valve core sealing structure - Google Patents
Automobile oil tank isolating valve and valve core sealing structure Download PDFInfo
- Publication number
- CN114017513A CN114017513A CN202111253916.4A CN202111253916A CN114017513A CN 114017513 A CN114017513 A CN 114017513A CN 202111253916 A CN202111253916 A CN 202111253916A CN 114017513 A CN114017513 A CN 114017513A
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- CN
- China
- Prior art keywords
- sealing
- valve core
- seal
- valve
- fuel tank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
- B60K2015/03302—Electromagnetic valves
Abstract
The invention discloses an automobile oil tank isolating valve and a valve core sealing structure, wherein a valve core body is of a columnar structure, and a sealing fixing part extending out along the axial direction is arranged in the middle of one end of a valve core; the seal is located case body one end, the seal towards case body one end be equipped with sealed fixed part complex cooperation groove, the seal is kept away from case body one end and is equipped with around the annular seal lip that extends of axial. Through the valve core sealing structure of the automobile oil tank isolating valve with the optimized design, the rubber part is in a head circular bowl mouth thin lip form, the stress deformation is sensitive, the contact is consistent, and the sealing performance is better.
Description
Technical Field
The invention relates to the technical field of hybrid electric vehicles, in particular to an automobile oil tank isolating valve and a valve core sealing structure.
Background
The canister evaporation system for the Plug-in Hybrid Electric Vehicle (PHEV) Vehicle, which is subject to the national six-evaporation and refueling emission regulations, differs from the traditional Vehicle in that the system has the definition of strict regulations-non-integral fuel-only emission control evaporation system (NIRCO system), and mainly comprises two important parts: high-pressure Fuel Tank and Fuel Tank Isolation Valve (FTIV Valve). The high pressure fuel tank can bear higher vapor pressure, so that fuel vapor is firmly sealed in the fuel tank in the driving process, and the FTIV valve plays an important role in the driving process. Under normal conditions, the FTIV valve is kept in a closed state, and only when a refueling request occurs, the pressure of the fuel tank exceeds a certain threshold value, or a relatively large negative pressure exists inside, the FTIV valve can be opened, and oil and gas in the fuel tank are released and sent to the carbon canister. In addition, a tank leak diagnostic may also trigger an FTIV valve opening request. The high-pressure oil tank system and the FTIV valve control ensure that the PHEV vehicle easily meets the requirements of national six-evaporation and refueling emission regulations.
Referring to fig. 1, the existing valve core sealing structure of the FTIV valve is in the form of an assembled sealing flat gasket, and the sealing principle is as follows: the spring at the back of the valve core provides pushing force to force the valve core to displace forwards until the sealing gasket of the valve core contacts the plane of the hand piece, so that the sealing and closing functions of the FTIV valve are realized. The valve core of the FTIV valve is made of pure iron, an electromagnetic coil is wound on the outer diameter of the valve core, and after the electromagnetic coil is electrified, the electromagnetic coil generates backward displacement to separate a sealing piece from the plane of a hand piece, so that the FTIV valve is opened.
The valve core sealing form of the conventional FTIV valve is a valve core assembling sealing gasket form, and the sealing ring is easy to have poor assembly after being assembled, so that the leakage rate of the sealing test is overlarge. Meanwhile, the sealing gasket is structurally designed to be in planar contact for sealing, so that the sealing contact area is large, the thrust of the spring is small and is usually smaller than 1N, the sealing gasket is not prone to deformation, the contact stress on the plane is uneven, the leakage rate is too large, and the requirements of the national six regulations cannot be met.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides an automobile oil tank isolating valve and a valve core sealing structure.
The invention provides a valve core sealing structure of an automobile oil tank isolating valve, which comprises: the valve core body and the sealing body;
the valve core body is of a cylindrical structure, and the middle part of one end of the valve core body is provided with a sealing fixing part which extends out along the axial direction; the seal is located case body one end, the seal towards case body one end be equipped with sealed fixed part complex cooperation groove, the seal is kept away from case body one end and is equipped with around the annular seal lip that extends of axial.
Preferably, the seal body is kept away from case body one end and still is equipped with spacing arch, and spacing arch is located the periphery of seal lip, and seal lip is kept away from seal body one end and is located spacing arch and keep away from seal body one side.
Preferably, a plurality of stop projections are included, arranged around the sealing lip.
Preferably, the projection of the limiting protrusion on the axial section of the valve core body is positioned in the projection of the seal fixing part on the axial section.
Preferably, the sealing fixing part forms a T-shaped structure, and the side wall of the matching groove is provided with a limiting groove matched with the T-shaped structure.
Preferably, the sealing body is vulcanized outside the seal fixing portion.
Preferably, one end of the valve core body, which is far away from the sealing body, is provided with a spring positioning groove.
According to the valve core sealing structure of the automobile oil tank isolating valve, the valve core body is of a columnar structure, and the middle part of one end of the valve core is provided with the sealing fixing part which extends out along the axial direction; the seal is located case body one end, the seal towards case body one end be equipped with sealed fixed part complex cooperation groove, the seal is kept away from case body one end and is equipped with around the annular seal lip that extends of axial. Through the valve core sealing structure of the automobile oil tank isolating valve with the optimized design, the rubber part is in a head circular bowl mouth thin lip form, the stress deformation is sensitive, the contact is consistent, and the sealing performance is better.
The invention also provides an automobile oil tank isolating valve which comprises a valve seat, a hand piece and the valve core sealing structure of the automobile oil tank isolating valve;
be equipped with the oil gas export on the adversary piece, the disk seat is located oil gas export one side, the disk seat is close to oil gas export one end is equipped with to keeping away from the chamber that holds that the oil gas export direction extends, it is equipped with supporting spring to hold the intracavity, and the case body is located hold intracavity and one end and support and lean on supporting spring, the seal orientation oil gas export arrange and sealing lip with the cooperation of oil gas export is sealed, the outside winding of case body has solenoid.
Preferably, the side wall of the valve core body is provided with a first limiting surface extending along the axial direction, and the inner wall of the accommodating cavity is provided with a second limiting surface matched with the first limiting surface for limiting.
Preferably, the hand piece is formed with a sealing boss surrounding the oil and gas outlet on a side thereof facing the sealing body.
In the invention, the technical effect of the proposed automobile oil tank isolating valve is similar to that of the valve core sealing structure, and therefore, the description is omitted.
Drawings
Fig. 1 is a schematic structural diagram of an automobile fuel tank isolation valve in the prior art.
Fig. 2 is a structural schematic diagram of a valve core sealing structure of an automobile oil tank isolating valve provided by the invention.
Fig. 3 is a schematic cross-sectional view of fig. 2.
Fig. 4 is a schematic structural diagram of an automotive fuel tank isolation valve according to the present invention.
Detailed Description
As shown in fig. 2 to 4, fig. 2 is a schematic structural diagram of a valve core sealing structure of an automotive fuel tank isolation valve according to the present invention, fig. 3 is a schematic structural diagram of a cross section of fig. 2, and fig. 4 is a schematic structural diagram of an automotive fuel tank isolation valve according to the present invention.
Referring to fig. 2 and 3, the invention provides an automobile oil tank isolating valve and a valve core sealing structure, comprising: the valve core body 1 and the sealing body 2;
the valve core body 1 has a columnar structure, and the middle part of one end of the valve core body 1 is provided with a sealing fixing part 11 which extends out along the axial direction; the seal body 2 is located valve core body 1 one end, seal body 2 towards valve core body 1 one end be equipped with the cooperation groove of sealed fixed part 11 complex, seal body 2 is kept away from valve core body 1 one end and is equipped with around the annular seal lip 21 that extends of axial.
In order to explain the specific working situation of the valve core sealing structure of the automotive fuel tank isolating valve in the embodiment in detail, referring to fig. 4, the embodiment also provides an automotive fuel tank isolating valve, which comprises a valve seat 4, a counterpart 5 and the valve core sealing structure of the automotive fuel tank isolating valve.
Be equipped with the oil gas export on the adversary piece 5, disk seat 4 is located oil gas export one side, disk seat 4 is close to oil gas export one end is equipped with to keeping away from the chamber that holds that the oil gas export direction extends, it is equipped with supporting spring 3 to hold the intracavity, and case body 1 is located hold intracavity and one end and support and lean on supporting spring 3, seal 2 orientation oil gas export arrange and sealing lip 21 with the cooperation of oil gas export is sealed, and 1 outside winding of case body has solenoid 6.
In the concrete working process of the car oil tank isolating valve of this embodiment, when the isolating valve is closed, solenoid outage, the case body removes to the oil gas export direction of opponent under supporting spring's effect for the sealing member seals the oil gas export, and the seal lip is around the oil gas export this moment, takes place deformation under the extrusion of case body, guarantees the sealed effect of oil gas export.
In the embodiment, the sealing structure of the isolating valve and the valve core of the automobile oil tank is provided, the valve core body has a columnar structure, and the middle part of one end of the valve core is provided with a sealing fixing part extending along the axial direction; the seal is located case body one end, the seal towards case body one end be equipped with sealed fixed part complex cooperation groove, the seal is kept away from case body one end and is equipped with around the annular seal lip that extends of axial. Through the valve core sealing structure of the automobile oil tank isolating valve with the optimized design, the rubber part is in a head circular bowl mouth thin lip form, the stress deformation is sensitive, the contact is consistent, and the sealing performance is better.
Accordingly, in order to ensure a sealing engagement of the counterpart element with the sealing body, in a specific design of the counterpart element, the side of the counterpart element 5 facing the sealing body 2 forms a sealing projection 51 surrounding said oil and gas outlet.
In a specific design of the valve body, the sealing body 2 is vulcanized outside the seal fixing portion 11. In the specific processing process, the valve core body is machined and molded firstly, then the valve core body is placed into a rubber mold, finally, a rubber material is injected into the mold cavity, the rubber is vulcanized around the sealing installation part of the valve core body, a sealing body adhered with the valve core body is formed, the complex process caused by secondary assembly of the rubber part is avoided, and the condition of poor assembly is avoided.
In order to improve the bonding strength of the metal valve core body and the rubber sealing body, in the specific design mode of the sealing installation part, the sealing fixing part 11 forms a T-shaped structure, the side wall of the matching groove is provided with a limiting groove matched with the T-shaped structure, the contact area of the sealing body and the valve core body is increased through the design of the T-shaped structure, and the limiting effect is achieved.
In order to ensure the deformation sensitivity of the sealing lip, the thickness of the sealing lip is usually thinner, a limiting bulge 22 is further arranged at one end of the sealing body 2, which is far away from the valve core body 1, the limiting bulge 22 is positioned at the periphery of the sealing lip 21, and one end of the sealing lip 21, which is far away from the sealing body 2, is positioned at one side of the limiting bulge 22, which is far away from the sealing body 2; when receiving great pressure, the sealing lip can be pressed down and bent to deform, and when the pressing stroke reaches the height of the limiting protrusion, the limiting protrusion enhances the pressure resistance of the sealing lip and reduces the continuous bending deformation of the sealing lip, so that the sealing lip is protected.
In a specific design mode of the limiting protrusion, an annular limiting protrusion arranged around the sealing lip can be adopted, and the limiting protrusion also comprises a plurality of limiting protrusions 22, wherein the plurality of limiting protrusions 22 are arranged around the sealing lip 21; protection of the sealing lip in the circumferential direction is ensured.
Further, in a specific arrangement manner of the limiting protrusions, a projection of the limiting protrusion 22 on an axial section of the spool body 1 is located within a projection of the seal fixing portion 11 on the axial section; when pressure is large and the limiting bulge is stressed and supported, the bottom of the limiting bulge is supported by the sealing fixing part of the valve core body, so that the supporting and protecting effect on the sealing lip is effectively guaranteed.
In other specific design modes, one end, far away from the sealing body 2, of the valve core body 1 is provided with a spring positioning groove, and one end of the supporting spring extends into the spring positioning groove, so that the reliable matching of the two is ensured.
In the specific matching of the valve core body and the valve seat, the side wall of the valve core body 1 is provided with a first limiting surface 12 extending along the axial direction, and the inner wall of the accommodating cavity is provided with a second limiting surface matched with the first limiting surface 12 for limiting; through the cooperation of the first limiting surface and the second limiting surface, the valve core body is ensured to slide along the axial direction during working, circumferential rotation is avoided, and the reliability of the matching of the sealing lip and the counterpart piece is further ensured.
In addition, in the specific design mode of disk seat, the disk seat outer wall is equipped with the first annular step of arranging around the case, and adversary's piece inner wall is equipped with the second annular step of arranging around the oil gas export, and second annular step and first annular step cooperation are arranged, are equipped with sealing washer 6 between the two, through two annular steps and sealing washer cooperations, realize that the second grade of disk seat and adversary's piece is sealed, improve sealed effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a case seal structure of car oil tank isolating valve which characterized in that includes: a valve core body (1) and a sealing body (2);
the valve core body (1) is of a cylindrical structure, and a sealing fixing part (11) extending out along the axial direction is arranged in the middle of one end of the valve core body (1); the sealing body (2) is located valve core body (1) one end, sealing body (2) towards valve core body (1) one end be equipped with sealed fixed part (11) complex cooperation groove, sealing body (2) keep away from valve core body (1) one end and be equipped with around axial annular extension's seal lip (21).
2. The valve core sealing structure of the automobile oil tank isolating valve according to claim 1, characterized in that one end of the sealing body (2) far away from the valve core body (1) is further provided with a limiting protrusion (22), the limiting protrusion (22) is located on the periphery of the sealing lip (21), and one end of the sealing lip (21) far away from the sealing body (2) is located on one side of the limiting protrusion (22) far away from the sealing body (2).
3. The spool seal structure of an automotive fuel tank isolation valve according to claim 2, characterized by comprising a plurality of stopper projections (22), the plurality of stopper projections (22) being arranged around the seal lip (21).
4. The spool seal structure of an automotive fuel tank isolation valve according to claim 2, characterized in that the projection of the stopper projection (22) on the axial section of the spool body (1) is located within the projection of the seal fixing portion (11) on the axial section.
5. The cartridge sealing structure of an automotive fuel tank isolation valve according to claim 1, wherein the seal fixing portion (11) forms a T-shaped structure, and the side wall of the fitting groove has a limit groove fitted with the T-shaped structure.
6. The spool seal structure of an automotive fuel tank isolation valve according to any one of claims 1 to 5, characterized in that a seal body (2) is vulcanized outside said seal fixing portion (11).
7. The valve core sealing structure of the automobile oil tank isolating valve according to claim 1, characterized in that one end of the valve core body (1) far away from the sealing body (2) is provided with a spring positioning groove.
8. An automotive fuel tank isolation valve characterized by comprising a valve seat (4), a counterpart member (5) and a spool seal structure of the automotive fuel tank isolation valve according to any one of claims 1 to 6;
be equipped with the oil gas export on adversary's piece (5), disk seat (4) are located oil gas export one side, disk seat (4) are close to oil gas export one end is equipped with to keeping away from the chamber that holds that oil gas export direction extends, it is equipped with supporting spring (3) to hold the intracavity, and case body (1) is located hold intracavity and one end and support and lean on supporting spring (3), seal (2) orientation oil gas export arrange and sealing lip (21) with the cooperation of oil gas export is sealed, and the outside winding of case body (1) has solenoid (6).
9. The automotive fuel tank isolating valve according to claim 8, wherein the side wall of the valve core body (1) is provided with a first limiting surface (12) extending along the axial direction, and the inner wall of the accommodating cavity is provided with a second limiting surface matched with the first limiting surface (12) for limiting.
10. The fuel tank isolation valve of claim 8 wherein the side of the counter-element (5) facing the sealing body (2) forms a sealing boss (51) surrounding the fuel outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253916.4A CN114017513A (en) | 2021-10-27 | 2021-10-27 | Automobile oil tank isolating valve and valve core sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253916.4A CN114017513A (en) | 2021-10-27 | 2021-10-27 | Automobile oil tank isolating valve and valve core sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114017513A true CN114017513A (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111253916.4A Pending CN114017513A (en) | 2021-10-27 | 2021-10-27 | Automobile oil tank isolating valve and valve core sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114017513A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000028010A (en) * | 1998-07-14 | 2000-01-25 | Nok Corp | Valve device |
| CN204163884U (en) * | 2014-10-24 | 2015-02-18 | 联创汽车电子有限公司 | Gas injection air valve |
| CN204187023U (en) * | 2014-10-09 | 2015-03-04 | 平原机器厂（新乡） | Spool and use rapid escape valve and the pneumatic piston actuating mechanism of this spool |
| CN206694606U (en) * | 2017-03-29 | 2017-12-01 | 广州竞标新能源汽车部件股份有限公司 | A kind of safety valve of automobile fuel tank |
| CN111271485A (en) * | 2020-03-20 | 2020-06-12 | 贝德凯利电气（深圳）有限公司 | Movable valve core structure and electromagnetic valve |
| CN112747123A (en) * | 2019-10-31 | 2021-05-04 | 浙江三花智能控制股份有限公司 | Gas valve |
-
2021
- 2021-10-27 CN CN202111253916.4A patent/CN114017513A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000028010A (en) * | 1998-07-14 | 2000-01-25 | Nok Corp | Valve device |
| CN204187023U (en) * | 2014-10-09 | 2015-03-04 | 平原机器厂（新乡） | Spool and use rapid escape valve and the pneumatic piston actuating mechanism of this spool |
| CN204163884U (en) * | 2014-10-24 | 2015-02-18 | 联创汽车电子有限公司 | Gas injection air valve |
| CN206694606U (en) * | 2017-03-29 | 2017-12-01 | 广州竞标新能源汽车部件股份有限公司 | A kind of safety valve of automobile fuel tank |
| CN112747123A (en) * | 2019-10-31 | 2021-05-04 | 浙江三花智能控制股份有限公司 | Gas valve |
| CN111271485A (en) * | 2020-03-20 | 2020-06-12 | 贝德凯利电气（深圳）有限公司 | Movable valve core structure and electromagnetic valve |
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Effective date of registration: 20230105 Address after: 200000 building 13, No. 3398, Puwei Road, Fengxian District, Shanghai Applicant after: Shanghai Xijia Precision Technology Co.,Ltd. Address before: 242300 standardized workshop at the intersection of Hailuo road and Biyun Road, port Ecological Industrial Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Applicant before: Anhui Xijia Precision Technology Co.,Ltd. |
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