CN222141980U

CN222141980U - A normal pressure liquid fuel tank valve

Info

Publication number: CN222141980U
Application number: CN202420401975.4U
Authority: CN
Inventors: 施昌福; 胡元伟
Original assignee: Chongqing Feirun New Energy Co ltd
Current assignee: Chongqing Feirun New Energy Co ltd
Priority date: 2024-03-04
Filing date: 2024-03-04
Publication date: 2024-12-10
Anticipated expiration: 2034-03-04

Abstract

The utility model discloses a valve for an atmospheric pressure liquid fuel tank, which is matched with the atmospheric pressure tank for use and comprises a valve body, wherein a valve rod is arranged in the valve body, a pressure cap is arranged at the upper end of the valve body, a hand wheel is arranged at the upper end of the pressure cap, a hexagonal flange nut is arranged at the middle position of the hand wheel, a first valve assembly is arranged at the lower end of the valve rod, a liquid phase port is arranged at one side of the valve body, a gas phase port is arranged at the lower end of the valve body, the liquid phase port, the gas phase port and the valve body are integrally cast and formed, a self-closing mechanism is arranged in the liquid phase port, a second valve assembly is arranged in the gas phase port, a pressure release spring is arranged outside the second valve assembly, a pressure regulating screw plug is arranged at one end of the gas phase port, and is connected with the gas phase port through threads, so that leakage when a pipeline falls off is avoided, and negative pressure is prevented from being generated in the tank body in the use process.

Description

Valve for normal pressure liquid fuel tank

Technical Field

The utility model relates to the technical field of valves, in particular to a normal pressure liquid fuel tank valve.

Background

The valve for normal pressure liquid fuel tank is a key equipment and is widely used in various liquid fuel storing and distributing systems. The valve plays a vital role in the systems, ensures safe storage, accurate metering and effective delivery of fuel, and the normal pressure liquid fuel tank valve is mainly used for controlling the inlet and outlet flow of liquid fuel, preventing fuel leakage and excessive overflow, and ensuring safe operation of the system. The valve is usually composed of a valve body, a valve cover, a valve seat, a valve clack, an actuating mechanism and the like, and the working principle is that the on-off state of a flow channel is changed by rotating or lifting the valve clack, so that the control of fluid is realized.

The water discharge valve mechanism comprises a valve body, wherein a hollow valve cavity is formed in the valve body, an inlet and an outlet are respectively formed at two ends of the valve cavity, a valve hole is formed at the outlet of the valve cavity, a valve core is arranged in the valve cavity, a core cone part of the valve core can float, a core seat of the valve core is clamped on the inner wall of the valve cavity, an extension spring and a contraction spring which are made of shape memory alloy are connected between the core seat and the core cone, the extension spring and the contraction spring heat and heat to generate phase change after being electrified, and the extension spring and the contraction spring control the up-and-down movement of the core cone so as to control the opening and closing of the valve mechanism, and the water discharge valve mechanism is simple in structure and very convenient for dismounting the valve core. This patent is anticipated is providing a drain valve mechanism to simply, conveniently control the flow of fluid, and make things convenient for the dismouting case.

The above-mentioned prior art can be applied to the fuel jar, but in the in-service use, on the one hand the too big pressure that carries can lead to the drop of gas phase pipe, causes the fuel leakage, on the other hand easily appears the problem of negative pressure when the internal pressure of fuel jar is too low, consequently does not satisfy current demand, has proposed an ordinary pressure liquid fuel jar valve to this we.

Disclosure of utility model

The utility model aims to provide a normal pressure liquid fuel tank valve, which solves the problems of leakage when a pipeline is easy to fall off and negative pressure generated by a tank body in the using process.

The normal pressure liquid fuel tank valve comprises a valve body, wherein a valve rod is arranged in the valve body, a pressure cap is arranged at the upper end of the valve body, a hand wheel is arranged at the upper end of the pressure cap, a hexagonal flange nut is arranged at the middle position of the hand wheel, the outer part of the hexagonal flange nut is fixed with the hand wheel, the hexagonal flange nut is matched with the upper end of the valve rod through threads, a first valve assembly is arranged at the lower end of the valve rod, a liquid phase port is arranged at one side of the valve body, a gas phase port is arranged at the lower end of the valve body, the liquid phase port, the gas phase port and the valve body are integrally cast and formed, a self-closing mechanism is arranged in the liquid phase port, a second valve assembly is arranged in the gas phase port, a pressure release spring is arranged outside the second valve assembly, a pressure regulating screw plug is arranged at one end of the gas phase port, and the pressure regulating screw plug is connected with the gas phase port through threads.

Preferably, a first spring is arranged between the bottom of the hexagonal flange nut and the upper end of the valve rod.

Preferably, the self-closing mechanism comprises a movable assembly, the movable assembly and the liquid phase port slide and limit, the outer ring inside the movable assembly is provided with four to six first through holes distributed in a ring shape, a conical part is arranged at the middle position of one side of the movable assembly, the conical part and the movable assembly are integrally formed, a fixing assembly is arranged at one side of the conical part, the fixing assembly is fixed with the liquid phase port, a second through hole is arranged at the middle position of the fixing assembly, a second spring is arranged outside the conical part, and two ends of the second spring are respectively fixed with the movable assembly and the fixing assembly.

Preferably, a gasket is arranged between the bottom of the hand wheel and the pressing cap.

Preferably, a sealing gasket is arranged at the bottom of the pressing cap, and the sealing gasket is respectively contacted with the valve body and the valve rod.

Preferably, an O-shaped sealing ring is arranged at the middle position inside the pressure cap, and the inner wall of the O-shaped sealing ring is contacted with the valve rod.

Preferably, the diameter of the second through hole is larger than that of the first through hole.

Compared with the prior art, the utility model has the beneficial effects that:

1. The utility model is suitable for an opening and closing device of fuel liquid, can stably work under high pressure and high temperature difference, drives the hexagonal flange nut to rotate by anticlockwise rotating the hand wheel, converts rotary motion into linear motion under the friction between the internal thread of the hexagonal flange nut and the thread at the upper end of the valve rod, and drives the first valve assembly to ascend so as to realize the communication between the liquid phase port and the gas phase port, thereby ensuring the pressure maintaining performance, the sealing performance and the deformation resistance of the mechanism.

2. According to the utility model, the self-closing mechanism is arranged in the liquid phase port, the valve is impacted by the pressure of the tank body to the conical part in the open state, the conical part drives the movable assembly to displace along with the continuous increase of the pressure, at the moment, fuel can pass through the first through hole in the movable assembly from the second through hole, and then can enter the valve body, and then the fuel enters the pipeline from the gas phase port at one end of the valve body, so that the fuel is conveyed, and when the valve is closed or the pressure of the tank body is reduced, the pressure on the conical part is smaller, at the moment, the movable assembly moves towards the fixed assembly under the action of the second spring, the conical part enters the second through hole again to form the sealing of the second through hole, and the self-closing function is realized.

Drawings

FIG. 1 is a schematic view of the inside of the overall structure of the present utility model;

FIG. 2 is a front view of the valve body of the present utility model;

FIG. 3 is a side view of the valve body of the present utility model;

FIG. 4 is a bottom view of the valve body of the present utility model;

fig. 5 is a perspective view of the self-closing mechanism of the present utility model.

1, A valve body, 2, a hand wheel, 3, a hexagonal flange nut, 4, a first spring, 5, a gasket, 6, a press cap, 7, a valve rod, 8, a first valve assembly, 9, a sealing gasket, 10, an O-shaped sealing ring, 11, a liquid phase port, 12, a movable assembly, 13, a conical member, 14, a fixed assembly, 15, a gas phase port, 16, a second spring, 17, a first through hole, 18, a second through hole, 19, a second valve assembly, 20, a pressure relief spring, 21 and a pressure regulating screw plug.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, an embodiment of the present utility model is provided: the valve for normal pressure liquid fuel tank comprises a valve body 1, wherein a valve rod 7 is arranged in the valve body 1, a pressure cap 6 is arranged at the upper end of the valve body 1, a hand wheel 2 is arranged at the upper end of the pressure cap 6, a hexagonal flange nut 3 is arranged at the middle position of the hand wheel 2, the outer part of the hexagonal flange nut 3 is fixed with the hand wheel 2, the hexagonal flange nut 3 is matched with the upper end of the valve rod 7 through threads, a first valve assembly 8 is arranged at the lower end of the valve rod 7, a liquid phase port 11 is arranged at one side of the valve body 1, a gas phase port 15 is arranged at the lower end of the valve body 1, the liquid phase port 11 and the gas phase port 15 are integrally cast and molded with the valve body 1, a self-closing mechanism is arranged in the liquid phase port 11, a second valve assembly 19 is arranged in the gas phase port 15, a pressure release spring 20 is arranged outside the second valve assembly 19, the valve assembly generally includes one or more shutters that are opened or closed under specific conditions to control the flow of fuel, and the shutters in the valve assembly are opened or closed according to the change of the conditions when the pressure or the liquid level in the fuel tank reaches a preset value, thereby adjusting the in and out of the fuel, and the pressure release spring mainly acts to push the shutters to be opened by its elastic action when the pressure in the valve body is too high, thereby releasing excessive pressure, and the pressure adjustment screw is used to adjust the pressure in the valve body, and the size or the position of the passage in the valve body can be changed by rotating the screw, thereby controlling the flow rate of the fuel.

When the fuel liquid delivery valve is used, the hand wheel 2 is rotated anticlockwise to drive the hexagonal flange nut 3 to rotate, and the rotation motion is converted into linear motion under the friction between the internal thread of the hexagonal flange nut and the thread at the upper end of the valve rod 7, so that the first valve assembly 8 is driven to ascend, the communication between the liquid phase port 11 and the gas phase port 15 is realized, and the fuel liquid is delivered.

Referring to fig. 1, a first spring 4 is installed between the bottom of the hexagonal flange nut 3 and the upper end of the valve rod 7, and the fastening effect of engagement between the adjusted threads of the hexagonal flange nut 3 to the valve rod 7 can be ensured under elastic support.

Referring to fig. 1 and 5, the self-closing mechanism includes a movable assembly 12, the movable assembly 12 and the liquid phase port 11 slide to limit, the outer ring inside the movable assembly 12 is provided with four to six first through holes 17 distributed in a ring shape, a conical member 13 is disposed at a middle position of one side of the movable assembly 12, the conical member 13 and the movable assembly 12 are integrally formed, a fixed assembly 14 is disposed at one side of the conical member 13, the fixed assembly 14 is fixed with the liquid phase port 11, a second through hole 18 is disposed at a middle position of the fixed assembly 14, a second spring 16 is mounted outside the conical member 13, and two ends of the second spring 16 are respectively fixed with the movable assembly 12 and the fixed assembly 14, so that the self-closing function can be realized.

Referring to fig. 1, a gasket 5 is arranged between the bottom of the hand wheel 2 and the press cap 6, so that tightness of contact between the hand wheel 2, the valve body 1 and the press cap 6 is ensured, and leakage of medium is prevented.

Referring to fig. 1, a sealing gasket 9 is disposed at the bottom of the press cap 6, and the sealing gasket 9 contacts the valve body 1 and the valve rod 7 respectively, so as to improve sealing performance therebetween.

Referring to fig. 1, an O-ring 10 is disposed at a middle position inside the press cap 6, and an inner wall of the O-ring 10 contacts with the valve rod 7, so as to further improve tightness and prevent leakage of medium.

Referring to fig. 5, the second through hole 18 has a larger diameter than the first through hole 17.

When the valve is used, impact is generated on the conical part 13 under the influence of the pressure of the tank body in the valve opening state, the movable assembly 12 is driven to displace through the conical part 13 along with the continuous increase of the pressure, at the moment, fuel can pass through the first through hole 17 in the movable assembly 12 from the second through hole 18, further, the fuel can enter the valve body 1, then the fuel enters a pipeline through the gas phase port 15 at one end of the valve body 1, the fuel is conveyed, when the valve is closed or the pressure of the tank body is reduced, the pressure on the conical part 13 is smaller, at the moment, the movable assembly 12 is moved towards the direction of the fixed assembly 14 under the action of the second spring 16, the conical part 13 enters the inside of the second through hole 18 again, the second through hole 18 is sealed, the self-closing function is realized, and the structure can prevent the tank body from generating negative pressure in the use process.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A normal pressure liquid fuel tank valve comprises a valve body (1) and is characterized in that a valve rod (7) is arranged in the valve body (1), a pressure cap (6) is arranged at the upper end of the valve body (1), a hand wheel (2) is arranged at the upper end of the pressure cap (6), a hexagonal flange nut (3) is arranged at the middle position of the hand wheel (2), the outer part of the hexagonal flange nut (3) is fixed with the hand wheel (2), the hexagonal flange nut (3) is matched with the upper end of the valve rod (7) through threads, a first valve assembly (8) is arranged at the lower end of the valve rod (7), a liquid phase port (11) is arranged at one side of the valve body (1), a gas phase port (15) is arranged at the lower end of the valve body (1), the liquid phase port (11) and the gas phase port (15) are integrally cast and formed, a self-closing mechanism is arranged in the middle position of the hand wheel (2), a second valve assembly (19) is arranged in the gas phase port (3), a second valve assembly (19) is arranged in the interior of the gas phase port (15), the second valve assembly (19) through threads, and the pressure regulating screw plug (21) is arranged at one end of the second valve assembly (21).

2. An atmospheric pressure liquid fuel tank valve as defined in claim 1 wherein a first spring (4) is mounted between the bottom of the hexagonal flange nut (3) and the upper end of the valve stem (7).

3. The atmospheric pressure liquid fuel tank valve as defined in claim 1, wherein the self-closing mechanism comprises a movable assembly (12), the movable assembly (12) and the liquid phase port (11) are limited in a sliding manner, four to six annular first through holes (17) are formed in an outer ring inside the movable assembly (12), a conical member (13) is arranged at the middle position of one side of the movable assembly (12), the conical member (13) and the movable assembly (12) are integrally formed, a fixing assembly (14) is arranged at one side of the conical member (13), the fixing assembly (14) is fixed with the liquid phase port (11), a second through hole (18) is formed in the middle position of the fixing assembly (14), a second spring (16) is mounted outside the conical member (13), and two ends of the second spring (16) are respectively fixed with the movable assembly (12) and the fixing assembly (14).

4. The atmospheric pressure liquid fuel tank valve as defined in claim 1, wherein a gasket (5) is provided between the bottom of the hand wheel (2) and the press cap (6).

5. An atmospheric pressure liquid fuel tank valve as defined in claim 1, wherein the bottom of the pressure cap (6) is provided with a sealing gasket (9), and the sealing gasket (9) is in contact with the valve body (1) and the valve stem (7), respectively.

6. An atmospheric pressure liquid fuel tank valve as defined in claim 1, wherein an O-ring (10) is provided at a middle position inside the pressure cap (6), and an inner wall of the O-ring (10) is in contact with the valve stem (7).

7. An atmospheric liquid fuel tank valve as defined in claim 3 wherein the second through-hole (18) has a larger diameter than the first through-hole (17).