Novel alcohol-based fuel bottle control valve integrating pressure release valve and breather valve

Abstract

The utility model provides a novel alcohol-based fuel bottle control valve integrating a pressure release valve and a breather valve, belongs to the technical field of steel bottle valves, and aims at solving the problems that an existing control valve is complex in structure and dispersed in function. The control valve comprises a control valve body, a valve handle, a regulating valve element and the like. A main body of the control valve is a four-way valve body, a vertical hole cavity is provided with a regulation and control valve core and a check valve core, a transverse right section is provided with a liquid outlet and a filling / recycling interface, a left section is provided with a pressure relief breathing sub-valve and the like, and the pressure relief breathing sub-valve is composed of a polytetrafluoroethylene ball plug and the like, so that pressure control and gas exchange are realized. The control valve integrates multiple functions, opening and closing of the valve are controlled by rotating the valve handle, gas-liquid exchange during airtight filling can be achieved, fuel leakage is avoided, the whole structure is practical, use is convenient, and the control valve is suitable for a storage bottle for producing, storing and transporting new energy alcohol-based liquid fuel.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder valve technology and relates to a new type of control valve for new energy alcohol-based liquid fuel cylinders. Background Technology

[0002] With the increasing development and technological advancement of alcohol-based liquid fuel production and application, the technical requirements for control valves used in storage bottles for new energy alcohol-based liquid fuels are also becoming increasingly stringent, as they directly relate to the production quality and application safety of new energy alcohol-based liquid fuels. In known technologies, alcohol-based liquid fuels are primarily liquid fuels blended with methanol and ethanol. Due to the characteristics of alcohol-based liquid fuels, they are typically stored in alcohol-based liquid fuel bottles. Existing control valves for new energy alcohol-based liquid fuel storage bottles consist of pressure relief valves and breather valves installed on the bottles to ensure the safe storage of the alcohol-based liquid fuel within. However, due to structural limitations, the pressure relief valves and breather valves used are independent valves. In practical applications, these valves must be connected in series or parallel to the alcohol-based liquid fuel bottle to perform functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, diversion, or overflow pressure relief. However, this process is complex, cumbersome to operate, and the inability to ensure the safe discharge of gas from the bottle during filling also brings inconvenience to practical applications. For example, Chinese Patent Publication No. CN 210034610U discloses a technical solution for an alcohol-based fuel control valve. It includes a first round rod at the top and bottom of one side of a baffle, with gaskets fixedly connected to the surfaces of the two first round rods. A first stabilizing member is fixedly connected to one end of each first round rod, and a second round rod and a third round rod are fixedly connected to the surfaces of the first stabilizing members respectively. A first gear is fixedly connected to the surface of the second round rod. This solution solves the problem of slow closing and fuel waste in old-fashioned valves. It is mainly designed for connection to alcohol-based fuel stoves, but its actual installation on alcohol-based liquid fuel bottles is limited. Further improvements and development are needed to create a control valve suitable for new energy alcohol-based liquid fuel storage bottles.

[0003] In order to adapt to the development and technological progress of new energy alcohol-based liquid fuels in production, storage and transportation, it is necessary to further improve and develop new control valves for new energy alcohol-based liquid fuel storage bottles. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the technical problems of complex control valves used in current new energy alcohol-based liquid fuel storage bottles, which cannot integrate pressure relief valves and breather valves and cannot guarantee the safe discharge of gas inside the bottle during filling, this utility model aims to provide a novel, practical, and easy-to-use control valve that integrates pressure relief valves and breather valves, suitable for the production and transportation of new energy alcohol-based liquid fuel storage bottles.

[0005] The technical solution adopted by this utility model to solve the above problems is:

[0006] A novel control valve for alcohol-based fuel cylinders, integrating a pressure relief valve and a breather valve, comprises: a control valve body, a valve handle, a fastening nut, a pressure nut, a regulating valve core, a backflow check valve core, a pressure relief breather valve, a pressure relief spring, a plug, an outlet connector, a liquid guide tube, and a liquid filter. The control valve body is a four-way valve body containing a cross-shaped inner cavity. The regulating valve core and the backflow check valve core are installed in the upper section of the vertical valve cavity of the control valve body. The regulating valve core has an external thread. A fluororubber sealing ring is fitted onto the internal thread and stepped core of the vertical valve cavity of the control valve body, which is sealed and connected to the vertical valve cavity of the control valve body and is pressed and fixed by a pressure nut. The top of the control valve core has an external thread that engages with the valve handle, and a fastening nut is embedded in the handle body. The bottom of the control valve core is equipped with a gasket and a compression spring that connect to the check valve core. The bottom of the check valve core connects to the lower section of the vertical valve cavity of the control valve body, which has a liquid guide channel. The control valve body has a vertical cavity with an internally threaded liquid guide tube at the bottom and an externally threaded expansion section at the top. A liquid filter is installed at the bottom of the liquid guide tube. The right-side transverse valve cavity of the control valve body contains a liquid outlet and a liquid filling / gas recovery interface. An outlet connector is installed at the outer opening of the right-side valve cavity. The outlet connector consists of an outlet connecting thread on the upper part of the connector nut, which is opposite to the liquid outlet, and a fireproof barrier on the lower part. The connector nut has an external thread, a fluororubber sealing ring, and is engaged with the internal thread on the outer opening of the right-side transverse valve cavity of the control valve body. The left-side transverse valve cavity of the control valve body has a pressure relief breather valve, a pressure relief spring, and a plug installed sequentially from the inside to the outside. The plug is engaged at the opening of the left-side transverse valve cavity of the control valve body. The right side of the pressure relief breather valve is connected to the liquid filling / gas recovery interface, the upper part is connected to the check valve core, and the lower part is connected to the liquid guide channel.

[0007] The above-mentioned novel control valve for alcohol-based fuel cylinders integrates a pressure relief valve and a breather valve. The pressure relief breather valve is composed of a polytetrafluoroethylene ball plug, a pressure relief breather valve body, a fluororubber sealing gasket, a valve core spring, and a spring pin seat. The polytetrafluoroethylene ball plug is installed in the cavity of the pressure relief breather valve body and is connected to the valve core spring. A spring pin seat with a fluororubber sealing gasket is installed at the outer opening of the pressure relief breather valve body. The spring pin seat connects to and locks the valve core spring.

[0008] The above-mentioned novel control valve for alcohol-based fuel cylinders integrates a pressure relief valve and a breather valve. The valve body's left transverse valve orifice is also connected to a liquid outlet connector. The liquid outlet connector is connected to a liquid outlet, and the outer opening of the liquid outlet is provided with an external thread that engages with the rubber cap.

[0009] The aforementioned novel control valve for alcohol-based fuel cylinders integrates a pressure relief valve and a breather valve. The fireproof barrier is made of high-temperature resistant and flame-retardant material and has an internal honeycomb-shaped flow guide structure for blocking flame propagation and reducing gas flow rate.

[0010] The aforementioned novel control valve for alcohol-based fuel cylinders, which integrates a pressure relief valve and a breather valve, features a fluororubber sealing ring and a fluororubber sealing gasket made of food-grade fluororubber material, making them resistant to alcohol-based fuel corrosion.

[0011] The above-mentioned novel control valve for alcohol-based fuel cylinders integrates a pressure relief valve and a breather valve. The opening pressure threshold of the pressure relief breather sub-valve is 0.1-0.3 MPa, and the closing pressure threshold is 0.05-0.15 MPa.

[0012] The above-mentioned novel control valve for alcohol-based fuel cylinders integrates a pressure relief valve and a breather valve. The main body of the control valve is made of 316 stainless steel, and the surface is passivated, achieving corrosion resistance that meets the ASTM A967 standard.

[0013] In use, according to design requirements and actual needs, the novel control valve for alcohol-based fuel cylinders, integrating a pressure relief valve and a breather valve, is installed on the alcohol-based fuel cylinder of the new energy alcohol-based fuel production and manufacturing device. First, the liquid filter is installed at the bottom of the liquid guide tube, ensuring a firm connection. A threaded connection or other suitable connection method can be used to ensure the normal functioning of the liquid filtration. Then, the external thread of the expansion section at the top of the liquid guide tube is engaged with the internal thread at the bottom of the vertical cavity of the control valve body. The liquid guide tube is tightened to ensure a secure connection between the liquid guide tube and the control valve body, forming a liquid flow channel. Fluororubber sealing rings are sequentially fitted onto the raised and recessed steps of the control valve core. The control valve core is then screwed into the internal thread of the vertical valve cavity of the control valve body through its external thread. After adjusting the control valve core to a suitable position, a pressure nut is used to press and fix the control valve core, ensuring good sealing performance. Finally, a gasket and compression spring are installed at the bottom of the control valve core. The check valve core is then connected to the gasket and compression spring to prevent backflow. The valve core and the control valve core form a linkage structure. An outlet connection threaded nozzle and a fireproof barrier are installed on the connector nut to ensure accurate installation and a secure connection. Then, a fluororubber sealing ring is fitted onto the external thread of the connector nut. The outlet connector is then connected to the internal thread of the right-side transverse valve cavity of the control valve body via the connector nut, completing the connection between the liquid outlet and the liquid filling / gas recovery interface. Inside the left-side transverse valve cavity of the control valve body, the pressure relief breather valve, pressure relief spring, and plug are installed sequentially, ensuring correct installation of all components. The spring pin seat secures the valve core spring, and the plug seals the left-side valve cavity opening. The fastening nut embedded in the valve handle body is connected to the external thread on the top of the control valve core. The valve handle is tightened to ensure a secure connection between the valve handle and the control valve core, facilitating subsequent operation. Finally, the liquid outlet connector is connected to the left-side transverse valve cavity opening of the control valve body, and the liquid outlet connector is aligned with the liquid outlet. Finally, the rubber cap is connected to the external thread of the liquid outlet, completing the installation of the entire control valve. The control valve for this alcohol-based liquid fuel cylinder integrates a pressure relief valve, a breather valve, a fireproof barrier, and a gas-liquid exchange return valve within the filling tank. During operation, rotating the handwheel moves the valve stem, which is threaded onto the main valve body. This causes the valve stem to move the regulating valve core up and down within the control valve body, opening and closing the valve core relative to the valve body channel. When the regulating valve core moves upward, it separates from the check valve core, creating a relaxed pressure on the pressure relief spring. The check valve core opens under pump suction, releasing liquid. Without pump suction, the check valve and control valve body remain closed, preventing liquid backflow. The fully sealed gas recovery and pressure relief breather pipe ensures safe filling by preventing gas leakage during filling and avoiding irreversible losses.

[0014] Because this utility model adopts the above-mentioned technical solution, it effectively solves the technical problems of existing new energy alcohol-based liquid fuel storage bottles, such as complex control valve structures, inability to integrate pressure relief valves and breather valves, and inability to ensure the safe discharge of gas from the tank during filling. Actual testing and trials have also shown that it has the following beneficial effects:

[0015] First, it integrates functions. This utility model integrates the pressure relief valve and the breather valve into the same control valve body, and also integrates functions such as fireproof barrier and gas-liquid exchange in the filling tank. Its overall structure is novel and practical.

[0016] Secondly, it is easy to operate. The valve can be opened and closed by turning the valve handle. The operation is simple and intuitive. There is no need to perform complicated operations on the pressure relief valve and the breather valve separately, which improves work efficiency and makes it convenient to use.

[0017] Third, it has high safety performance. During the liquid filling process, the pressure relief breathing valve and related structural design can achieve full-sealing of gas-liquid exchange in the internal space of the filling tank, preventing gas leakage from the tank during filling and preventing safety accidents caused by gas leakage, while reducing fuel loss. The fire barrier effectively blocks the flame, further ensuring safety during use.

[0018] Fourth, it has a wide range of applications. This new type of control valve is applicable to the production, storage and transportation of new energy alcohol-based liquid fuels. It can meet the usage requirements of alcohol-based liquid fuel storage bottles under different working conditions and has good versatility and practicality.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the specific structure of an embodiment of this application.

[0022] Figure 2 yes Figure 1 A schematic diagram of the left-side structure of the embodiment.

[0023] Figure 3 yes Figure 1 An enlarged schematic diagram of the control valve core in the embodiment.

[0024] Figure 4 yes Figure 1 An enlarged schematic diagram of the check valve core in the embodiment.

[0025] Figure 5 yes Figure 1 A top-view enlarged structural diagram of the pressure nut in the embodiment.

[0026] Figure 6 yes Figure 1 A magnified right-side view of the wire plug in the embodiment.

[0027] Figure 7 yes Figure 1 A magnified right-side view of the structure of the pressure relief breather valve in the embodiment.

[0028] Figure 8 yes Figure 1 An enlarged structural diagram of the control valve body in the embodiment.

[0029] Figure 9 yes Figure 8 A schematic diagram of the right side of the control valve body in the embodiment.

[0030] Figure 10 yes Figure 1 The embodiment shows a schematic diagram of the specific structure of the control valve body, specifically the horizontal left section valve orifice, which is connected to a liquid outlet pipe and has a liquid outlet and a meshing cap.

[0031] The labels in the attached diagram are as follows: 1-Valve handle; 2-Fluoropolymer sealing ring; 3-Fastening nut; 4-Pressure nut; 5-Control valve core; 6-Control valve body; 601-Liquid guide channel; 7-Check flow valve core; 8-Pressure relief breather valve; 801-PTFE ball plug; 802-Pressure relief breather valve body; 803-Fluoropolymer sealing gasket; 804-Valve core spring; 805-Spring pin seat; 9-Pressure relief spring; 10-Liquid guide tube; 11-Plug. ; 12-Outlet connection threaded nozzle; 13-Liquid filling, gas recovery, and pressure relief breathing pipe; 14-Fire barrier; 15-Liquid outlet; 151-Liquid outlet connecting pipe; 16-Breath port plug; 17-Liquid filling / gas recovery interface; 18-Outlet connector; 19-Liquid filling / gas recovery connector; 20-Liquid filter; 21-Connector nut; 22-Plastic cap; 23-Gasket; 24-Compression spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] As attached Figures 1-10As shown, this embodiment includes: a control valve body 6, a valve handle 1, a fastening nut 3, a pressure nut 4, a regulating valve core 5, a check valve core 7, a pressure relief breather valve 8, a pressure relief spring 9, a plug 11, an outlet connector 18, a liquid guide tube 10, and a liquid filter 20. The control valve body 6 is a four-way valve body containing a cross-shaped inner cavity. The regulating valve core 5 and the check valve core 7 are installed in the upper section of the vertical valve cavity of the control valve body 6. The regulating valve core 5 has an external thread that engages with the vertical valve cavity of the control valve body 6. The internal thread and core body have three steps with three fluororubber sealing rings 2 fitted on them, which are sealed and connected to the vertical valve cavity of the control valve body 6 and pressed and fixed by the pressure nut 4. The top of the control valve core 5 has an external thread that engages with the valve handle 1, and the handle body has a fastening nut 3 embedded in it. The bottom of the control valve core 5 is equipped with a gasket 23 and a compression spring 24, which connect to the check valve core 7. The bottom of the check valve core 7 is connected to the lower section of the vertical cavity of the control valve body 6, which has a liquid guiding channel 601. The liquid guiding channel 601 is located in the control valve body 6. The bottom of the vertical cavity has an internally threaded liquid guide tube 10 connected to the top of the expanded tube, which has an external thread. A liquid filter 20 is installed at the bottom of the liquid guide tube 10. The right-side valve cavity of the control valve body 6 contains a liquid outlet 15 and a liquid filling / gas recovery interface 17. An outlet connector 18 is installed at the outer opening of the right-side valve cavity. The outlet connector 18 consists of an outlet connection thread 12 on the upper part of the connector nut 21 that is opposite to the liquid outlet 15, and a fireproof barrier installed at the lower part. Composed of 14 components, the connecting nut 21 is fitted with an external thread and a fluororubber sealing ring, which is then engaged with the internal thread on the outer opening of the right-side valve cavity of the control valve body 6; the left-side valve cavity of the control valve body 6 is sequentially connected from the inside to the outside with a pressure relief breather valve 8, a pressure relief spring 9, and a plug 11, with the plug 11 engaged with the opening of the left-side valve cavity of the control valve body 6; the right side of the pressure relief breather valve 8 is connected to a liquid filling / gas recovery interface 17, the upper part is connected to a check valve core 7, and the lower part is connected to a liquid guide channel 601.

[0035] Preferred options are listed in the appendix. Figures 1-2 , Figure 7 The pressure relief breather valve 8 described in this embodiment is composed of a polytetrafluoroethylene ball plug 801, a pressure relief breather valve body 802, a fluororubber sealing gasket 803, a valve core spring 804, and a spring pin seat 805. The polytetrafluoroethylene ball plug 801 is installed in the inner cavity of the pressure relief breather valve body 802 and is connected to the valve core spring 804. The outer opening of the pressure relief breather valve body 802 is equipped with a spring pin seat 805 with a fluororubber sealing gasket 803 attached to it. The spring pin seat 805 is connected to and locks the valve core spring 804.

[0036] For example, see Appendix Figures 1-2 , Figure 10In this embodiment, the left transverse section of the valve cavity of the control valve body 6 is also connected to a liquid outlet pipe 151, the liquid outlet pipe 151 is connected to a liquid outlet 15, and the outer opening of the liquid outlet 15 is provided with an external thread of the internal thread engaging the rubber cap 22.

[0037] For details, please see the appendix. Figure 2 The fire barrier 14 described in this embodiment is made of high-temperature resistant and flame-retardant material, and has a honeycomb-shaped flow guide structure inside to block the spread of flames and reduce the gas flow rate.

[0038] For details, please see the appendix. Figures 1-2 , Figure 7 , Figure 10 The fluororubber sealing ring 2 and fluororubber sealing gasket 803 described in this embodiment are food-grade fluororubber materials with alcohol-based fuel corrosion resistant structures.

[0039] Preferably, referring to the accompanying drawings, this embodiment 1 Figure 2 , Figure 7 In this embodiment, the opening pressure threshold of the pressure relief breathing valve 8 is 0.1-0.3 MPa, and the closing pressure threshold is 0.05-0.15 MPa.

[0040] For example, see Appendix Figures 1-2 , Figure 8 , Figure 10 The control valve body 6 described in this embodiment is made of 316 stainless steel, and the surface is passivated, so that the corrosion resistance meets the ASTM A967 standard.

[0041] The above is merely one embodiment. Any other technical features and solutions derived by adding components, making equivalent substitutions, and making partial improvements without creative effort by those skilled in the art are all within the scope of protection of this utility model patent.

Claims

1. A novel control valve for alcohol-based fuel cylinders, integrating a pressure relief valve and a breather valve, characterized in that, It includes a control valve body (6), a valve handle (1), a fastening nut (3), a pressure nut (4), a regulating valve core (5), a check valve core (7), a pressure relief breather valve (8), a pressure relief spring (9), a plug (11), an outlet connector (18), a liquid guide tube (10), and a liquid filter (20). The control valve body (6) is a four-way valve body with a cross-shaped inner cavity. The regulating valve core (5) and the check valve core (7) are installed on the upper section of the vertical valve cavity of the control valve body (6). The regulating valve core (5) has an external thread that engages with the vertical valve cavity of the control valve body (6). The internal thread and core body have three fluororubber sealing rings (2) fitted on the (3) steps of concave and convex surfaces, which are sealed and connected to the vertical valve cavity of the control valve body (6) and pressed and fixed by the pressure nut (4). The top of the control valve core (5) has an external thread that engages with the valve handle (1) and the fastening nut (3) is embedded in the handle body. The bottom of the control valve core (5) is fitted with a gasket (23) and a compression spring (24) to connect to the check valve core (7). The bottom of the check valve core (7) is connected to the lower section of the vertical cavity of the control valve body (6), which is a liquid guiding channel (601). The liquid guiding channel (601) is located in the control valve body (6). The valve body (6) has an internally threaded liquid guide tube (10) at the bottom of its vertical cavity, and an external thread at the top of its expanded tube section. A liquid filter (20) is installed at the bottom of the liquid guide tube (10). The right-side valve cavity of the valve body (6) contains a liquid outlet (15) and a liquid filling / gas recovery interface (17). An outlet connector (18) is installed at the outer opening of the right-side valve cavity. The outlet connector (18) consists of an outlet connection thread (12) installed on the upper part of the connector nut (21) opposite to the liquid outlet (15), and a fireproof barrier installed at the lower part. The device (14) is composed of a connector nut (21) with an external thread fitted with a fluororubber sealing ring and an internal thread on the outer opening of the right-side valve cavity of the control valve body (6). The left-side valve cavity of the control valve body (6) is connected from the inside to the outside with a pressure relief breather valve (8), a pressure relief spring (9) and a plug (11). The plug (11) is connected to the opening of the left-side valve cavity of the control valve body (6). The right side of the pressure relief breather valve (8) is connected to a liquid filling / gas recovery interface (17), the upper part is connected to a check valve core (7), and the lower part is connected to a liquid guide channel (601).

2. The novel control valve for alcohol-based fuel cylinders integrating a pressure relief valve and a breather valve as described in claim 1, characterized in that, The pressure relief breather valve (8) is composed of a polytetrafluoroethylene ball plug (801), a pressure relief breather valve body (802), a fluororubber gasket (803), a valve core spring (804), and a spring pin seat (805). The polytetrafluoroethylene ball plug (801) is installed in the inner cavity of the pressure relief breather valve body (802) and connected to the valve core spring (804). The outer opening of the pressure relief breather valve body (802) is equipped with a spring pin seat (805) fitted with a fluororubber gasket (803). The spring pin seat (805) is connected to and locks the valve core spring (804).

3. A novel control valve for alcohol-based fuel cylinders integrating a pressure relief valve and a breather valve as described in claim 1, characterized in that, The left side of the control valve body (6) is also connected to a liquid outlet pipe (151), the liquid outlet pipe (151) is connected to a liquid outlet (15), and the outer opening of the liquid outlet (15) is provided with an external thread of an internal threaded cap (22).

4. A novel control valve for alcohol-based fuel cylinders integrating a pressure relief valve and a breather valve as described in claim 1, characterized in that, The fire barrier (14) is made of high-temperature resistant and flame-retardant material and has a honeycomb-shaped flow guide structure inside to block the spread of flames and reduce the gas flow rate.

5. A novel control valve for alcohol-based fuel cylinders integrating a pressure relief valve and a breather valve as described in claim 1, characterized in that, The fluororubber sealing ring (2) and fluororubber sealing gasket (803) are food-grade fluororubber materials with alcohol-based fuel corrosion resistant structures.

6. A novel control valve for alcohol-based fuel cylinders integrating a pressure relief valve and a breather valve as described in claim 1, characterized in that, The opening pressure threshold of the pressure relief breathing valve (8) is 0.1-0.3 MPa, and the closing pressure threshold is 0.05-0.15 MPa.

7. A novel control valve for alcohol-based fuel cylinders integrating a pressure relief valve and a breather valve as described in claim 1, characterized in that, The control valve body (6) is made of 316 stainless steel and the surface is passivated, so that the corrosion resistance meets the ASTM A967 standard.

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