Check valve device and tank system

Abstract

The present disclosure provides a one-way valve device and a tank system, wherein the one-way valve device includes: a shell assembly, formed with an inlet, an outlet, a first chamber, and a second chamber, wherein the inlet end of the first chamber is suitable for being connected to the inlet, and the discharge end of the first chamber is suitable for being connected to the outlet through the second chamber; a first valve core assembly, movably disposed in the first chamber, the first valve core assembly is used to connect or cut off the inlet and the first chamber; a second valve core assembly, at least a part of the second valve core assembly is movably disposed in the second chamber, the second valve core assembly is used to connect or cut off the first chamber and the second chamber.

Description

Technical Field

[0001] The present disclosure relates to the field of aerospace engineering technology, and in particular to a one-way valve device and a tank system. Background Art

[0002] During the launch of a liquid rocket, it is necessary to pressurize the tank of the liquid rocket to be launched. A one-way valve is usually provided on the pipeline for supplying pressure to the tank, so as to ensure the medium flow in the corresponding pipeline during the pressurization process and the sealing effect of the tank after the pressurization. However, since the aforementioned process has high requirements for the reliability of the one-way valve, multiple one-way valves are often provided in series on the pressure supply pipeline in actual applications, which increases the complexity of the pressure supply pipeline and makes installation and maintenance extremely inconvenient. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, according to a first aspect of an embodiment of the present disclosure, a one-way valve device is provided, comprising:

[0005] The housing assembly is formed with an inlet, an outlet, a first chamber and a second chamber, wherein the inlet end of the first chamber is adapted to be connected to the inlet, and the outlet end of the first chamber is adapted to be connected to the outlet through the second chamber;

[0006] A first valve core component is movably disposed in the first chamber, and the first valve core component is used to connect or cut off the flow inlet and the first chamber;

[0007] The second valve core component, at least part of which is movably disposed in the second chamber, is used to connect or cut off the first chamber and the second chamber.

[0008] In a feasible implementation manner, the first valve core assembly includes:

[0009] A first valve core body is slidably disposed in the first chamber, and the first valve core body has a first working position and a second working position along a sliding direction;

[0010] A first elastic member is connected between the housing assembly and the first valve core body, and is used to apply a force to the first valve core body in a direction from the second working position to the first working position;

[0011] When the first valve core body is located in the first working position, it covers the inlet to cut off the inlet and the first chamber; when the first valve core body is located in the second working position, it opens the inlet to connect the inlet and the first chamber.

[0012] In a feasible embodiment, the first valve core body separates the first chamber into a first inlet space and a first outlet space, the first inlet space is located between the first valve core body and the inlet, the first outlet space is located between the first valve core body and the second chamber, and the first valve core body is formed with a first throttling hole, which is connected between the first inlet space and the first outlet space.

[0013] In a feasible implementation manner, the second valve core assembly includes:

[0014] A second valve core body, at least a portion of which is slidably disposed in the second chamber, and the second valve core body has a third working position and a fourth working position along a sliding direction;

[0015] A second elastic member is connected between the housing assembly and the second valve core body, and is used to apply a force to the second valve core body in a direction from the fourth working position to the third working position;

[0016] Wherein, the shell assembly is formed with a flow port, which is used to connect the first chamber and the second chamber; when the second valve core body is located in the third working position, the flow port is covered to cut off the flow port and the second chamber; when the second valve core body is located in the fourth working position, the flow port is opened to connect the first chamber to the second chamber through the flow port.

[0017] In a feasible embodiment, the second valve core body separates the second chamber into a second inlet space and a second outlet space, the second inlet space is located between the second valve core body and the flow port, the second outlet space is located between the second valve core body and the outlet, and the second valve core body is formed with a second throttling hole, which is connected between the second inlet space and the second outlet space.

[0018] In a feasible implementation manner, the second valve core body includes:

[0019] A sliding sleeve is slidably disposed in the second chamber;

[0020] A push rod is slidably arranged in the sliding sleeve, and the push rod has a connecting end and a matching end, the connecting end is connected to the second elastic member, the matching end passes through the flow port and is located in the first chamber, and the matching end is used to abut against the first valve core assembly, and the moving direction of the first valve core assembly, the sliding direction of the sliding sleeve and the sliding direction of the push rod are all consistent with the conduction direction of the flow port;

[0021] Among them, when the second valve core body is located in the third working position, the sliding sleeve and the push rod cover the flow port to cut off the flow port and the second chamber, and the sliding sleeve abuts between the shell assembly and the connecting end; when the second valve core body is located in the fourth working position, the sliding sleeve opens part of the flow port to connect the first chamber to the second chamber through the flow port.

[0022] In a feasible implementation manner, the second valve core body further includes:

[0023] The first sealing ring is sleeved on the push rod and is located between the push rod and the sliding sleeve.

[0024] In a feasible embodiment, the housing assembly includes:

[0025] A connecting piece, comprising a first connecting section, a second connecting section and a matching section, wherein the matching section is connected between the first connecting section and the second connecting section;

[0026] A first shell is sleeved on the first connecting section, the first shell is formed with an inlet, and the connecting piece and the first shell form a first chamber;

[0027] A second shell is sleeved on the second connecting section, the second shell is formed with an outlet, and the connecting piece and the second shell form a second chamber;

[0028] The first shell and the second shell are respectively abutted against two sides of the connecting member.

[0029] In a feasible implementation manner, the first connecting section and / or the matching section is sealed with the first housing; and / or,

[0030] The second connecting section and / or the matching section is sealed and matched with the second housing.

[0031] According to a second aspect of an embodiment of the present disclosure, a tank system is provided, comprising:

[0032] A one-way valve device as proposed in any one of the first aspects above.

[0033] The above description is only an overview of the technical solution provided by the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented according to the contents of the specification. In order to make the above and other features and effects of the present disclosure more obvious and easy to understand, the implementation methods of the present disclosure are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0035] Figure 1 A schematic structural diagram of a one-way valve device according to an embodiment of the present invention.

[0036] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0037] 100 housing assembly; 200 first valve core assembly; 300 second valve core assembly;

[0038] 110 connecting member; 120 first housing; 130 second housing; 140 second sealing ring; 150 third sealing ring;

[0039] 210 first valve core body; 220 first elastic member;

[0040] 310 second valve core body; 320 second elastic member;

[0041] 111 first connecting section; 112 second connecting section; 113 matching section;

[0042] 311 sliding sleeve; 312 ejector rod; 313 first sealing ring;

[0043] 101 inlet; 102 outlet; 103 first chamber; 104 second chamber; 105 flow outlet;

[0044] 201 first throttle hole;

[0045] 301 second throttle hole;

[0046] 1031 a first inflow space; 1032 a first outflow space;

[0047] 1041 a second inlet space; 1042 a second outlet space. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] In the process of organizing the launch of a liquid rocket, it is necessary to pressurize the tank of the liquid rocket to be launched. Among them, a one-way valve is usually provided on the pipeline used to supply pressure to the tank, so as to use the one-way valve to ensure the medium flow of the corresponding pipeline during the pressurization process and the sealing effect of the tank after the pressurization is completed. However, since the above process has high requirements on the reliability of the one-way valve, multiple one-way valves are often arranged in series on the pressure supply pipeline in actual applications to avoid the situation where an individual one-way valve fails to block the reverse flow of the fluid in the pipeline, and other one-way valves are used to intercept the reverse flow of the aforementioned fluid. However, the above arrangement will increase the complexity of the pressure supply pipeline, and the installation and maintenance are extremely inconvenient.

[0050] In order to solve at least one of the technical problems existing in the prior art or related technology, such as Figure 1 As shown, according to the first aspect of an embodiment of the present disclosure, a one-way valve device is proposed, including: a shell assembly 100, which is formed with an inlet 101, an outlet 102, a first chamber 103 and a second chamber 104, the inlet end of the first chamber 103 is suitable for being connected to the inlet 101, and the discharge end of the first chamber 103 is suitable for being connected to the outlet 102 through the second chamber 104; a first valve core assembly 200, which is movably arranged in the first chamber 103, and the first valve core assembly 200 is used to make the inlet 101 and the first chamber 103 connected or cut off; a second valve core assembly 300, at least a part of the second valve core assembly 300 is movably arranged in the second chamber 104, and the second valve core assembly 300 is used to make the first chamber 103 and the second chamber 104 connected or cut off.

[0051] The one-way valve device provided in the embodiment of the present disclosure includes the aforementioned housing assembly 100, a first valve core assembly 200 and a second valve core assembly 300. In practical applications, the aforementioned one-way valve device can be used to be arranged on a pipeline whose flow direction is to be controlled, so as to limit the one-way flow of the fluid in the aforementioned pipeline through the aforementioned one-way valve device in the direction from the aforementioned inlet 101 to the aforementioned outlet 102. Based on the aforementioned arrangement, the housing assembly 100 of the aforementioned one-way valve device can provide a path for the flow of the fluid, that is, the fluid can enter the one-way valve device from the aforementioned inlet 101, and the inlet end and the discharge end of the aforementioned first chamber 103 are respectively suitable for connecting the inlet 101 and the aforementioned second chamber 104, and the second chamber 104 is connected to the outlet 102, so that when the inlet 101 is connected to the inlet end of the first chamber 103, the fluid flowing into the one-way valve device through the inlet 101 can further flow into the aforementioned first chamber 103, and in the aforementioned second chamber 104, the fluid can be discharged from the one-way valve device. When the discharge end of the first chamber 103 is connected to the aforementioned second chamber 104, the fluid in the first chamber 103 can further flow to the outlet 102 through the second chamber 104, and flow out of the one-way valve device through the aforementioned outlet 102; at least two valve core assemblies are movably arranged inside the aforementioned housing assembly 100, and the aforementioned at least two valve core assemblies include the aforementioned first valve core assembly 200 and the aforementioned second valve core assembly 300, wherein the first valve core assembly 200 can switch the inlet 101 and the outlet 102 by moving relative to the housing assembly 100. The one-way valve device can limit the flow of the fluid through the housing assembly 100 by using the first valve core assembly 200 and the second valve core assembly 300. That is, no matter whether the fluid flows through the one-way valve device along the direction from the aforementioned inlet 101 to the aforementioned outlet 102, or flows through the one-way valve device along the direction from the aforementioned outlet 102 to the aforementioned inlet 101, the one-way valve device can also limit the flow of the fluid through the housing assembly 100 by using the first valve core assembly 200 and the second valve core assembly 300. In order for water to flow through the one-way valve device in either direction, the prerequisites that need to be met include at least the first valve core assembly 200 connecting the inlet 101 and the first chamber 103, and the second valve core assembly 300 connecting the first chamber 103 and the second chamber 104. Therefore, the one-way valve device provided in the embodiment of the present disclosure can replace at least two one-way valves connected in series in the traditional technology in actual applications, which can help reduce the number of valve components installed on the pipeline, reduce the complexity of the pipeline and the amount of valve component installation work, improve the structural compactness of the pipeline, and facilitate the maintenance of the pipeline.

[0052] It should be noted that Figure 1 The dashed line with an arrow in the middle is used to schematically indicate the conduction direction of the one-way valve device in actual application.

[0053] It should be noted that the one-way valve in traditional technology often has only one valve core. Accordingly, the on-off state between the inlet and outlet of the aforementioned one-way valve is only controlled by a single valve core. Therefore, when there is a need for redundant arrangement of multiple one-way valves in actual applications, multiple one-way valves need to be installed in the pipeline in series in sequence, which not only increases the workload of the installation work, but also increases the complexity of the corresponding pipeline, making it inconvenient to perform pipeline maintenance in the later stage. Compared with the one-way valve in the aforementioned conventional technology, at least two of the aforementioned valve core assemblies may be provided in the housing assembly 100 of the one-way valve device provided in the embodiment of the present disclosure, and based on the aforementioned arrangement, the two valve core assemblies may cooperate with each other to control the on-off state of the fluid flow path in the housing assembly 100, thereby replacing at least two one-way valves connected in series in the conventional technology. Therefore, when there is a need for redundant arrangement of the aforementioned multiple one-way valves in actual applications, the housing assembly 100 of the one-way valve device can be connected to the corresponding pipeline, without the need to separately install the valve bodies of multiple one-way valves on the corresponding pipeline, which can help reduce the number of valve components installed on the pipeline, reduce the complexity of the pipeline and the workload of valve component installation, improve the structural compactness of the pipeline, and facilitate maintenance of the pipeline.

[0054] It is understandable that, in practical applications, the one-way valve device can be used as a component of a liquid rocket, for example, as a component of a tank system of a liquid rocket. The tank system can include a tank body and a pressure supply pipeline. When the one-way valve device is applied to the tank system of a liquid rocket, the one-way valve device can be arranged on the pressure supply pipeline of the tank system to limit the flow direction of the fluid in the pressure supply pipeline. The pressure supply pipeline is connected to the tank body and is used to transport a pressurized medium into the tank body to increase the internal pressure of the tank body.

[0055] It can be understood that the aforementioned fluid can be a gas medium or a liquid medium.

[0056] It can be understood that the power for the first valve core assembly 200 and the second valve core assembly 300 to move relative to the housing assembly 100 may include fluid pressure, that is, the first valve core assembly 200 and the second valve core assembly 300 are suitable for moving under the action of fluid pressure, thereby achieving on-off control at the corresponding positions. Exemplarily, the first valve core assembly 200 can be configured to connect the aforementioned inlet 101 and the aforementioned first chamber 103 when the fluid pressure at the aforementioned inlet 101 is greater than the first pressure, and to cut off the aforementioned inlet 101 and the aforementioned first chamber 103 when the fluid pressure at the aforementioned inlet 101 is less than or equal to the aforementioned first pressure; the second valve core assembly 300 can be configured to connect the aforementioned first chamber 103 and the aforementioned second chamber 104 when the fluid pressure in the aforementioned first chamber 103 is greater than the second pressure, and to cut off the aforementioned first chamber 103 and the aforementioned second chamber 104 when the fluid pressure in the aforementioned first chamber 103 is less than or equal to the aforementioned second pressure; the aforementioned first pressure and the aforementioned second pressure can be the same or different, and the specific values ​​of the aforementioned first pressure and the aforementioned second pressure can be set in combination with actual needs, and no excessive restrictions are made here.

[0057] It can be understood that when the fluid pressure at the outlet 102 is greater than or equal to the fluid pressure at the inlet 101, the first valve core assembly 200 cuts off the connection between the inlet 101 and the first chamber 103, and / or the second valve core assembly 300 cuts off the connection between the first chamber 103 and the second chamber 104.

[0058] It can be understood that the housing assembly 100 of the aforementioned one-way valve device can also form a third chamber, which is connected between the first chamber 103 and the second chamber 104, and the one-way valve device can also include a third valve core assembly, which is movably arranged in the third chamber and is used to open or close the third chamber; the number of the aforementioned third chamber and the aforementioned third valve core assembly can be multiple, and the third chamber corresponds to the third valve core assembly one by one, and the multiple third chambers are connected in sequence between the aforementioned first chamber 103 and the aforementioned second chamber 104.

[0059] It can be understood that the aforementioned at least part of the second valve core assembly 300 is movably arranged in the second chamber 104, which means that the second valve core assembly 300 is located as a whole in the second chamber 104 and can move relative to the shell assembly 100, or, a part of the second valve core assembly 300 is located in the second chamber 104 and the other part is located outside the second chamber 104, and the second valve core assembly 300 can move relative to the shell assembly 100.

[0060] like Figure 1As shown, in some examples, the first valve core assembly 200 includes: a first valve core body 210, which is slidably disposed in the first chamber 103, and the first valve core body 210 has a first working position and a second working position along the sliding direction; a first elastic member 220, which is connected between the housing assembly 100 and the first valve core body 210, and is used to apply a force to the first valve core body 210 in the direction from the second working position to the first working position; wherein, when the first valve core body 210 is located in the first working position, it covers the inlet 101 so that the inlet 101 and the first chamber 103 are cut off; when the first valve core body 210 is located in the second working position, it opens the inlet 101 so that the inlet 101 and the first chamber 103 are connected.

[0061] In this technical solution, the first valve core assembly 200 may include the aforementioned first valve core body 210 and the aforementioned first elastic member 220; based on the aforementioned arrangement, the first valve core assembly 200 may utilize the first valve core body 210 to open or cover the aforementioned inlet 101, thereby realizing the switching of the on-off state between the inlet 101 and the first chamber 103; when the first valve core body 210 is located in the aforementioned first working position, when there is fluid at the inlet 101, the aforementioned first valve core body 210 may be subjected to the pressure of the fluid, and accordingly, when the pressure exerted by the aforementioned fluid on the first valve core body 210 is relatively large, the first valve core body 210 may overcome the aforementioned The first valve core body 210 is provided with a first elastic member 220, and slides toward the second working position to open the inlet 101, thereby making the inlet 101 and the first chamber 103 conductive, so as to introduce the fluid into the first chamber 103, so that the fluid can flow out of the one-way valve device through the second chamber 104 and the outlet 102; when the pressure exerted by the fluid on the first valve core body 210 is relatively small, the first valve core body 210 can slide toward the first working position to cover the inlet 101 under the action of the force exerted by the first elastic member 220, thereby cutting off the inlet 101 and the first chamber 103, and hindering the fluid from flowing through the one-way valve device.

[0062] It can be understood that the first elastic member 220 can be, but is not limited to, a spring, and the spring coefficient of the spring can be selected according to actual needs, which is not further limited here.

[0063] It can be understood that the cavity wall of the aforementioned first chamber 103 can be guided and slidably matched with the aforementioned first valve core body 210, that is, the shape of the cavity wall of the aforementioned first chamber 103 can be matched with the shape of the aforementioned first valve core body 210, and the cavity wall of the aforementioned first chamber 103 can be slidably connected with the aforementioned first valve core body 210, so as to improve the sliding smoothness and stability of the first valve core body 210 and reduce the risk of the first valve core body 210 getting stuck during the sliding process. Exemplarily, the aforementioned first chamber 103 and the aforementioned first valve core body 210 can both be roughly in the shape of a rotating body, and the axial directions of the two are consistent, the cavity wall of the first chamber 103 is sealed and slidably matched with the outer peripheral wall of the first valve core body 210, and accordingly, the aforementioned inlet 101 and the aforementioned second chamber 104 can be located at the two ends of the aforementioned first chamber 103 in the axial direction, and the first valve core assembly 200 can slide along the axial direction.

[0064] It can be understood that based on the aforementioned setting of the first elastic member 220, the stability of the first valve core body 210 in the second working position can be improved, which is beneficial for the first valve core body 210 to maintain a stable position under the action of fluid pressure and the first elastic member 220, and reduces the risk of large-scale flutter of the first valve core assembly 200, which is beneficial to reduce the vibration of the pipeline in actual applications.

[0065] In some feasible examples, a first hot-pressed rubber layer is provided on one side of the first valve core body 210 for covering the aforementioned flow port 105 , and the first hot-pressed rubber layer is used for sealingly cooperating with the housing assembly 100 .

[0066] like Figure 1 As shown, in some examples, the first valve core body 210 separates the first chamber 103 into a first inlet space 1031 and a first outlet space 1032, the first inlet space 1031 is located between the first valve core body 210 and the inlet 101, the first outlet space 1032 is located between the first valve core body 210 and the second chamber 104, and the first valve core body 210 is formed with a first throttling hole 201, and the first throttling hole 201 is connected between the first inlet space 1031 and the first outlet space 1032.

[0067] In this technical solution, the first valve core body 210 can be formed with the aforementioned first throttling hole 201, and the aforementioned first throttling hole 201 is connected between the aforementioned first inlet space 1031 and the aforementioned first discharge space 1032; based on the aforementioned arrangement, the contact area between the first valve core body 210 and the fluid in the first chamber 103 can be increased, which is beneficial to enhancing the driving effect of the fluid on the first valve core body 210, and the first valve core assembly 200 can use the first throttling hole 201 to throttle the fluid in the first chamber 103, increase the flow resistance generated by the first valve core body 210 to the fluid, and then enhance the sensitivity of the first valve core body 210 to the fluid pressure, which is beneficial for the first valve core assembly 200 to overcome the force of the aforementioned first elastic member 220 when the fluid pressure is large, and slide to the aforementioned second working position to open the aforementioned inlet 101.

[0068] It can be understood that the conduction area of ​​the aforementioned first throttling hole 201 is smaller than the conduction area of ​​the aforementioned first flow inlet space 1031; the conduction area of ​​the aforementioned first throttling hole 201 is the area of ​​the cross-section of the aforementioned first throttling hole 201, and the conduction area of ​​the aforementioned first flow inlet space 1031 is the area of ​​the cross-section of the aforementioned first throttling hole 201, and the conduction area of ​​the aforementioned first flow inlet space 1031 is the area of ​​the cross-section of the aforementioned first flow inlet space 1031 perpendicular to the flow direction of the fluid.

[0069] It is understandable that the number of the aforementioned first throttle holes 201 can be multiple, and when the first valve core body 210 is substantially in the shape of a rotating body, the multiple first throttle holes 201 can be evenly arranged along the circumference of the aforementioned first valve core body 210. Exemplarily, the number of the aforementioned first throttle holes 201 can be greater than or equal to 4.

[0070] like Figure 1 As shown, in some examples, the second valve core assembly 300 includes: a second valve core body 310, at least a portion of the second valve core body 310 is slidably disposed in the second chamber 104, and the second valve core body 310 has a third working position and a fourth working position along the sliding direction; a second elastic member 320, connected between the housing assembly 100 and the second valve core body 310, and used to apply a force to the second valve core body 310 in the direction from the fourth working position to the third working position; wherein the housing assembly 100 is formed with a flow port 105, and the flow port 105 is used to connect between the first chamber 103 and the second chamber 104; when the second valve core body 310 is located in the third working position, the flow port 105 is covered to cut off the flow port 105 and the second chamber 104; when the second valve core body 310 is located in the fourth working position, the flow port 105 is opened to connect the first chamber 103 to the second chamber 104 through the flow port 105.

[0071] In this technical solution, the second valve core assembly 300 may include the aforementioned second valve core body 310 and the aforementioned second elastic member 320; based on the aforementioned arrangement, the second valve core assembly 300 may utilize the second valve core body 310 to open or cover the aforementioned flow port 105, thereby realizing the switching of the on-off state between the flow port 105 and the second chamber 104; when the second valve core body 310 is located in the aforementioned third working position, when there is fluid at the flow port 105, the aforementioned second valve core body 310 may be subjected to the pressure of the fluid, and accordingly, when the pressure exerted by the aforementioned fluid on the second valve core body 310 is relatively large, the first valve core body 210 may overcome the aforementioned second elastic member 320. The second valve core body 310 is configured to have a plurality of first and second working positions, each of which is connected to the second chamber 104, so that the fluid in the first chamber 103 is introduced into the second chamber 104 through the flow port 105, so that the fluid can flow out of the one-way valve device through the outlet 102. When the pressure exerted by the fluid on the second valve core body 310 is relatively small, the second valve core body 310 can slide to the third working position under the action of the force exerted by the second elastic member 320 to cover the flow port 105, so that the flow port 105 and the second chamber 104 are cut off, thereby preventing the fluid from flowing through the one-way valve device.

[0072] It is understandable that the second elastic member 320 may be, but is not limited to, a spring, and the stiffness coefficient of the spring may be selected in accordance with actual needs, which is not further limited herein.

[0073] It can be understood that the cavity wall of the second chamber 104 can be guided and slidably matched with the second valve core body 310, that is, the shape of the cavity wall of the second chamber 104 can be matched with the shape of the second valve core body 310, and the cavity wall of the second chamber 104 can be slidably connected with the second valve core body 310, so as to improve the sliding smoothness and stability of the second valve core body 310 and reduce the risk of the second valve core body 310 getting stuck during the sliding process. Exemplarily, the second chamber 104 and the second valve core body 310 can both be roughly in the shape of a rotating body, and the axial directions of the two are consistent, the cavity wall of the second chamber 104 is sealed and slidably matched with the outer peripheral wall of the second valve core body 310, and accordingly, the flow port 105 and the outlet port 102 can be respectively located at the two ends of the second chamber 104 in the axial direction, and the second valve core assembly 300 can slide in the axial direction.

[0074] It can be understood that based on the aforementioned setting of the second elastic member 320, the stability of the second valve core body 310 in the fourth working position can be improved, which is beneficial for the second valve core body 310 to maintain a stable position under the action of fluid pressure and the second elastic member 320, and reduces the risk of large-scale flutter of the second valve core assembly 300, which is beneficial to reduce the vibration of the pipeline in actual applications.

[0075] In some feasible examples, a second hot-pressed rubber layer is provided on one side of the second valve core body 310 for covering the aforementioned flow port 105 , and the second hot-pressed rubber layer is used for sealingly cooperating with the housing assembly 100 .

[0076] like Figure 1 As shown, in some examples, the second valve core body 310 separates the second chamber 104 into a second inlet space 1041 and a second outlet space 1042, the second inlet space 1041 is located between the second valve core body 310 and the flow port 105, the second outlet space 1042 is located between the second valve core body 310 and the outlet port 102, and the second valve core body 310 is formed with a second throttling hole 301, and the second throttling hole 301 is connected between the second inlet space 1041 and the second outlet space 1042.

[0077] In this technical solution, the second valve core body 310 can be formed with the aforementioned second throttling hole 301, and the aforementioned first throttling hole 201 is connected between the aforementioned second inlet space 1041 and the aforementioned second discharge space 1042; based on the aforementioned arrangement, the contact area between the second valve core body 310 and the fluid in the second chamber 104 can be increased, which is beneficial to enhancing the driving effect of the fluid on the second valve core body 310, and the second valve core assembly 300 can use the second throttling hole 301 to throttle the fluid in the second chamber 104, increase the flow resistance generated by the second valve core body 310 to the fluid, and then enhance the sensitivity of the second valve core body 310 to the fluid pressure, which is beneficial for the second valve core assembly 300 to overcome the force of the aforementioned second elastic member 320 when the fluid pressure is large, and slide to the aforementioned fourth working position to open the aforementioned flow port 105.

[0078] It can be understood that the conduction area of ​​the aforementioned second throttling hole 301 is smaller than the conduction area of ​​the aforementioned second flow inlet space 1041; the conduction area of ​​the aforementioned first throttling hole 201 is the area of ​​the cross-section of the aforementioned first throttling hole 201, and the conduction area of ​​the aforementioned first flow inlet space 1031 is the area of ​​the cross-section of the aforementioned first flow inlet space 1031 perpendicular to the flow direction of the fluid.

[0079] It is understandable that the number of the second throttle holes 301 may be multiple, and when the second valve core body 310 is substantially in the shape of a rotating body, the multiple second throttle holes 301 may be evenly arranged along the circumference of the second valve core body 310. For example, the number of the second throttle holes 301 may be greater than or equal to 4.

[0080] like Figure 1 As shown, in some examples, the second valve core body 310 includes: a sleeve 311, which is slidably disposed in the second chamber 104; a push rod 312, which is slidably disposed in the sleeve 311, and the push rod 312 has a connecting end and a matching end, the connecting end is connected to the second elastic member 320, the matching end passes through the flow port 105 and is located in the first chamber 103, and the matching end is used to abut against the first valve core assembly 200, and the moving direction of the first valve core assembly 200, the sliding direction of the sleeve 311, and the sliding direction of the push rod 312 are all the same. The conduction direction of the flow port 105 is consistent; wherein, when the second valve core body 310 is located at the third working position, the sleeve 311 and the push rod 312 cover the flow port 105 to cut off the flow port 105 and the second chamber 104, and the sleeve 311 abuts between the shell assembly 100 and the connecting end; when the second valve core body 310 is located at the fourth working position, the sleeve 311 opens part of the flow port 105 to connect the first chamber 103 to the second chamber 104 through the flow port 105.

[0081] In this technical solution, the second valve core body 310 may include the aforementioned sliding sleeve 311 and the aforementioned push rod 312; based on the aforementioned arrangement, on the one hand, it is convenient for the first valve core assembly 200 and the second valve core assembly 300 to be linked, so that the first valve core assembly 200 can compress the second elastic member 320 by abutting the push rod 312 during the process of conducting the inlet 101 and the first chamber 103, so as to release the movement restriction of the push rod 312 on the sliding sleeve 311, so as to facilitate the sliding sleeve 311 to move under the action of fluid pressure to open part of the flow port 105, so that the first chamber 103 is connected to the second chamber 104 through the flow port 105, or, it is convenient for the second elastic member 32 The first valve core assembly 200 is driven to move by the push rod 312, so that when the second valve core assembly 300 cuts off the flow port 105, the first valve core assembly 200 is synchronously moved and the connection relationship between the flow inlet 101 and the first chamber 103 is cut off, thereby improving the movement synchronization of the first valve core assembly 200 and the second valve core assembly 300, which is beneficial to improving the reliability of the one-way valve device; on the other hand, when the second valve core assembly 300 is located in the aforementioned third working position, the top cover can be used to cooperate with the housing assembly 100 to limit the sliding sleeve 311 to prevent the sliding sleeve 311 from loosening, which is beneficial to improving the blocking effect of the second valve core assembly 300 on the flow port 105.

[0082] It can be understood that, in actual application, when there is fluid at the inlet 101, the first valve core assembly 200 can respond to the fluid pressure at the inlet 101 in priority to the second valve core assembly 300; taking the case where the first valve core assembly 200 includes the aforementioned first valve core body 210 and the first elastic member 220 as an example, when the fluid pressure at the inlet 101 is relatively large, the first valve core body 210 can overcome the force of the first elastic member 220 and move in a direction away from the inlet 101 to open the inlet 101, and the mating end of the aforementioned push rod 312 can be used to abut the first valve core body 210, so that during the movement of the first valve core body 210, the push rod 312 can be driven to overcome the force of the aforementioned second elastic member 320 and move. So that the push rod 312 can slide relative to the sleeve 311 and release the position constraint on the sleeve 311, so that the sleeve 311 can move under the action of the fluid pressure at the flow port 105 to open part of the aforementioned flow port 105; when the fluid pressure at the inlet 101 is relatively small, the fluid pressure in the first chamber 103 and the flow port 105 will also be correspondingly small, so that the first valve core body 210 is driven by the force of the first elastic member 220 to move toward the inlet 101 to cover the inlet 101, and at the same time, the mating end of the aforementioned push rod 312 can abut against the first valve core body 210 under the drive of the second elastic member 320, thereby cooperating with the aforementioned first elastic member 220 to drive the first valve core body 210 to move, so as to reduce the risk of movement stagnation of the first valve core body 210.

[0083] It can be understood that the aforementioned sliding sleeve 311 is provided with a rod through hole, and the aforementioned push rod 312 may include a limiting plate and a rod body, the rod body is slidably provided in the aforementioned rod through hole and one end of the rod body is the aforementioned mating end, the aforementioned connecting end is located at the aforementioned limiting plate, and the limiting plate is connected to the other end of the rod body, the diameter of the limiting plate is larger than the diameter of the aforementioned rod through hole, and when the second valve core body 310 is located in the third working position, the limiting plate abuts against the side of the sliding sleeve 311 away from the flow hole, and the side of the sliding sleeve 311 facing the flow hole abuts against the shell assembly 100.

[0084] Exemplarily, the first distance between the aforementioned first working position and the aforementioned second working position is greater than the second distance between the aforementioned third working position and the aforementioned fourth working position, and when the aforementioned first valve core body 210 is located at the aforementioned first working position and the aforementioned second valve core body 310 is located at the aforementioned third working position, the distance between the aforementioned connecting end and the aforementioned first valve core body 210 is less than the difference between the aforementioned first distance and the aforementioned second distance; based on the aforementioned setting, it is convenient for the first valve core assembly 200 and the push rod 312 to contact each other during the activity, thereby ensuring the linkage effect between the first valve core assembly 200 and the second valve core assembly 300.

[0085] For example, Figure 1 As shown, in the case where the first valve core assembly 200 includes the aforementioned first valve core body 210 and the first elastic member 220, the aforementioned first chamber 103, the first valve core body 210, the second chamber 104, the aforementioned sleeve 311 and the aforementioned push rod 312 can all be roughly in the shape of a rotating body and have the same axial direction, the cavity wall of the second chamber 104 is slidably matched with the outer peripheral wall of the second valve core body 310, and accordingly, the aforementioned inlet 101 and the aforementioned flow port 105 are respectively located at the two ends of the axial direction of the aforementioned first chamber 103, the aforementioned flow port 105 and the aforementioned outlet 102 can be respectively located at the two ends of the axial direction of the aforementioned second chamber 104, and the aforementioned first valve core assembly 200, the aforementioned sleeve 311 and the aforementioned push rod 312 can slide along the axial direction.

[0086] like Figure 1 As shown, in some examples, the second valve core body 310 further includes: a first sealing ring 313 , which is sleeved on the push rod 312 , and the first sealing ring 313 is located between the push rod 312 and the sliding sleeve 311 .

[0087] In this technical solution, the second valve core body 310 may also include the aforementioned first sealing ring 313; based on the aforementioned setting, the push rod 312 and the sliding sleeve 311 can be dynamically sealed by the aforementioned first sealing ring 313, so as to ensure that the push rod 312 can slide relative to the sliding sleeve 311 while utilizing the first sealing ring 313 to block the fitting gap between the push rod 312 and the sliding sleeve 311 to prevent fluid leakage.

[0088] like Figure 1 As shown, in some examples, the shell assembly 100 includes: a connector 110, having a first connecting section 111, a second connecting section 112 and a mating section 113, wherein the mating section 113 is connected between the first connecting section 111 and the second connecting section 112; a first shell 120, which is sleeved on the first connecting section 111, the first shell 120 is formed with an inlet 101, and the connector 110 and the first shell 120 form a first chamber 103; a second shell 130, which is sleeved on the second connecting section 112, the second shell 130 is formed with an outlet 102, and the connector 110 and the second shell 130 form a second chamber 104; wherein the first shell 120 and the second shell 130 respectively abut against two sides of the connector 110.

[0089] In this technical solution, the shell assembly 100 may include the aforementioned connecting member 110, the first shell 120 and the second shell 130; based on the aforementioned arrangement, on the one hand, it can facilitate the assembly of the one-way valve device during the manufacturing process, and facilitate the installation of the first valve core assembly 200 and the second valve core assembly 300; on the other hand, the connecting member 110 can be used to limit the first shell 120 and the second shell 130, thereby improving the structural reliability of the shell assembly 100.

[0090] In some feasible examples, the connector 110, the first shell 120 and the second shell 130 are all roughly in the shape of a body of revolution, and the connector 110 is threadedly connected to the first shell 120, and the connector 110 is threadedly connected to the second shell 130. The outer peripheral wall of one end of the first shell 120 can be hexagonal and have a first lead sealing hole, which is sleeved on the first connecting section 111; the outer peripheral wall of one end of the second shell 130 can be hexagonal and have a second lead sealing hole, which is sleeved on the second connecting section 112; based on this, the first shell 120 and the second shell 130 can be easily disassembled and prevented from loosening.

[0091] In some feasible examples, the first shell 120 forms an inlet nozzle interface, and the aforementioned inlet port 101 is opened in the aforementioned inlet nozzle structure; the second shell 130 forms an outlet nozzle interface, and the aforementioned outlet port 102 is opened in the aforementioned inlet nozzle structure; the aforementioned flow hole is formed in the aforementioned connecting piece 110.

[0092] like Figure 1 As shown, in some examples, the first connecting segment 111 and / or the mating segment 113 are sealed and fitted with the first shell 120 ; and / or the second connecting segment 112 and / or the mating segment 113 are sealed and fitted with the second shell 130 .

[0093] In this technical solution, a sealed fit can be set between the first connecting section 111 and the first shell 120. For example, a second sealing ring 140 can be set between the outer circumferential wall of the aforementioned first connecting section 111 and the inner circumferential wall of the aforementioned first shell 120. Based on the aforementioned setting, axial sealing can be achieved between the first connecting section 111 and the first shell 120 to prevent fluid from leaking through the fitting gap between the first connecting section 111 and the first shell 120.

[0094] In this technical solution, a sealing fit can be set between the mating section 113 and the first shell 120. For example, a third sealing ring 150 can be set between one end of the mating section 113 facing the first shell 120 and one end of the first shell 120 facing the mating section 113. Based on the above setting, radial sealing can be achieved between the mating section 113 and the first shell 120 to prevent fluid from seeping out through the mating gap between the mating section 113 and the first shell 120.

[0095] In this technical solution, a sealed fit can be set between the second connecting section 112 and the second shell 130. For example, a second sealing ring 140 can be set between the outer circumferential wall of the aforementioned second connecting section 112 and the inner circumferential wall of the aforementioned second shell 130. Based on the aforementioned setting, axial sealing can be achieved between the second connecting section 112 and the second shell 130 to prevent fluid from leaking through the fitting gap between the second connecting section 112 and the second shell 130.

[0096] In this technical solution, a sealing fit can be set between the mating section 113 and the second shell 130. For example, a third sealing ring 150 can be set between one end of the mating section 113 facing the second shell 130 and one end of the second shell 130 facing the mating section 113. Based on the above setting, radial sealing can be achieved between the mating section 113 and the second shell 130 to prevent fluid from seeping out through the mating gap between the mating section 113 and the second shell 130.

[0097] It can be understood that, in this technical solution, at least one group, or at least two groups, or at least three groups, or all of the first connecting section 111 and the first shell 120, the second connecting section 112 and the second shell 130, the mating section 113 and the first shell 120, and the mating section 113 and the second shell 130 can be sealed.

[0098] According to a second aspect of an embodiment of the present disclosure, a tank system is provided, comprising: a one-way valve as provided in any one of the first aspects above.

[0099] Since the tank system provided by the present disclosure includes the one-way valve as proposed in any one of the first aspects above, it has all the beneficial effects of the one-way valve, which will not be described in detail here.

[0100] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0101] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0102] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A one-way valve device, characterized in that: include: A shell assembly is formed with an inlet, an outlet, a first chamber and a second chamber, wherein an inlet end of the first chamber is adapted to be connected to the inlet, and a discharge end of the first chamber is adapted to be connected to the outlet through the second chamber; A first valve core component is movably disposed in the first chamber, and the first valve core component is used to connect or cut off the flow inlet and the first chamber; A second valve core assembly, at least a portion of which is movably disposed in the second chamber, and the second valve core assembly is used to connect or block the first chamber and the second chamber.

2. The one-way valve device according to claim 1, characterized in that: The first valve core assembly comprises: A first valve core body is slidably disposed in the first chamber, and the first valve core body has a first working position and a second working position along a sliding direction; a first elastic member, connected between the housing assembly and the first valve core body, and used for applying a force to the first valve core body in a direction from the second working position to the first working position; Wherein, when the first valve core body is located at the first working position, it covers the inlet so that the inlet and the first chamber are blocked; when the first valve core body is located at the second working position, it opens the inlet so that the inlet and the first chamber are connected.

3. The one-way valve device according to claim 2, characterized in that: The first valve core body separates the first chamber into a first inlet space and a first outlet space, the first inlet space is located between the first valve core body and the inlet port, the first outlet space is located between the first valve core body and the second chamber, and the first valve core body is formed with a first throttling hole, which is connected between the first inlet space and the first outlet space.

4. The one-way valve device according to claim 1, characterized in that: The second valve core assembly comprises: A second valve core body, at least a portion of which is slidably disposed in the second chamber, and the second valve core body has a third working position and a fourth working position along a sliding direction; a second elastic member, connected between the housing assembly and the second valve core body, and used for applying a force on the second valve core body in a direction from the fourth working position to the third working position; Wherein, the shell assembly is formed with a flow port, and the flow port is used to connect the first chamber and the second chamber; when the second valve core body is located in the third working position, the flow port is covered to cut off the flow port and the second chamber; when the second valve core body is located in the fourth working position, the flow port is opened to allow the first chamber to connect with the second chamber through the flow port.

5. The one-way valve device according to claim 4, characterized in that: The second valve core body separates the second chamber into a second inlet space and a second outlet space, the second inlet space is located between the second valve core body and the flow port, the second outlet space is located between the second valve core body and the flow port, and the second valve core body is formed with a second throttling hole, which is connected between the second inlet space and the second outlet space.

6. The one-way valve device according to claim 4, characterized in that: The second valve core body comprises: A sliding sleeve, slidably disposed in the second chamber; a push rod, slidably inserted into the sliding sleeve, the push rod having a connecting end and a matching end, the connecting end being connected to the second elastic member, the matching end passing through the flow port and being located in the first chamber, and the matching end being used to abut against the first valve core assembly, and the moving direction of the first valve core assembly, the sliding direction of the sliding sleeve and the sliding direction of the push rod are all consistent with the conducting direction of the flow port; Wherein, when the second valve core body is located in the third working position, the sliding sleeve and the push rod cover the flow port to cut off the flow port and the second chamber, and the sliding sleeve abuts between the housing assembly and the connecting end; when the second valve core body is located in the fourth working position, the sliding sleeve opens the flow port to connect the first chamber to the second chamber through the flow port.

7. The one-way valve device according to claim 6, characterized in that: The second valve core body also includes: The first sealing ring is sleeved on the push rod, and the first sealing ring is located between the push rod and the sliding sleeve.

8. The one-way valve device according to any one of claims 1 to 7, characterized in that: The housing assembly comprises: A connecting member, comprising a first connecting segment, a second connecting segment and a matching segment, wherein the matching segment is connected between the first connecting segment and the second connecting segment; A first shell, sleeved on the first connecting section, the first shell is formed with the inlet, and the connecting member and the first shell form the first chamber; A second shell, sleeved on the second connecting section, the second shell is formed with the outlet, and the connecting member and the second shell form the second chamber; Wherein, the first shell and the second shell are respectively abutted against two sides of the connecting member.

9. The one-way valve device according to claim 8, characterized in that: The housing assembly further comprises: The first connecting section and / or the matching section are in sealing cooperation with the first housing; and / or, The second connecting section and / or the matching section is / are sealed and matched with the second shell.

10. A tank system, characterized in that: include: A one-way valve device as claimed in any one of claims 1 to 9.

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