Mechanical one-way valve
By arranging multiple conductors in the mechanical one-way shutter to detect the position status of the shutter, the problem of fault detection of mechanical one-way shutters in the prior art is solved, and efficient fault detection and maintenance are achieved.
Patent Information
- Application Number
- CN202421426883.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-20
AI Technical Summary
Existing mechanical one-way shutters are difficult to detect their position status in the event of failure, resulting in inefficient maintenance and adding sensors will increase system complexity and reduce reliability.
A plurality of conductive bodies are arranged in the mechanical one-way shutter, and the position state of the shutter is detected by the contact between the conductive body and the shutter valve, and a conductive path is formed to determine the opening and closing state of the shutter.
It realizes position status detection of the mechanical one-way shutter without increasing the complexity of the system, which can determine whether the shutter has a stuck fault and improves maintenance efficiency.
Smart Images
Figure CN222823772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of aircraft air management systems, in particular to a mechanical one-way valve which is easy to detect position status. Background Art
[0002] The air management system is one of the important factors to improve the comfort of the aircraft. At present, a one-way valve is often used in the air supply pipeline of the air management system of civil aircraft to limit the flow direction of the air supply airflow.
[0003] A one-way valve usually includes a valve base, a valve flap, a valve shaft and a torsion spring. Its working principle is: when there is no air supply in the system, the valve flap is in the initial closed position, and the one-way valve is in a closed state; when the air flows from a specified direction and the airflow pressure reaches a preset value, the valve flap can be pushed to overcome the torque of the torsion spring and rotate around the valve shaft, thereby turning the one-way valve into an open state; and if the air flows in the opposite direction of the specified direction, the airflow pressure and the torsion spring will act together on the valve flap, causing it to remain stationary in the closed position, and the one-way valve will also remain in a closed state.
[0004] Under normal circumstances, the one-way valve adopts a simple and reliable pure mechanical design, that is, a mechanical one-way valve, which has good reliability. However, due to improper maintenance or other non-human factors, it is still possible for the valve flap to be stuck in the closed position or the open position to any degree, further causing system failure.
[0005] Since it is a purely mechanical device, it will not provide feedback of its working status or position signal to the unit or maintenance personnel. Therefore, the equipment failure is a hidden failure and the fault location is poor. Usually, it can only be determined by removing the mechanical one-way valve for inspection. However, this troubleshooting method has high requirements for maintenance personnel and maintenance cycles, and the gas supply system equipment must undergo a large number of follow-up measures such as airtightness tests after removal and reinstallation.
[0006] Therefore, without the position status and information of the mechanical one-way valve, the maintenance measures are inefficient. In current technology, sensors are added to the system or mechanical one-way valve to monitor its position status, but this will increase the complexity of the system or equipment and correspondingly reduce the reliability of the system or equipment.
[0007] In summary, a mechanical one-way valve is needed that can detect the position status of the one-way valve without increasing the complexity of the system, so that maintenance personnel can determine its position status and whether it has faults such as jamming without removing the mechanical one-way valve. Utility Model Content
[0008] In order to solve the problems existing in the above-mentioned prior art, the utility model proposes a mechanical one-way valve, the purpose of which is to detect the position state of the mechanical one-way valve without increasing the complexity of the system by arranging multiple conductors in the mechanical one-way valve.
[0009] Therefore, the utility model proposes a mechanical one-way valve, which is used for guiding and limiting flow, and includes a valve base, a valve flap, a valve shaft and a torsion spring, wherein the valve flap is configured to move between a closed position and an open position, wherein the mechanical one-way valve also includes a plurality of conductors, the plurality of conductors are arranged on the valve base and insulated from the valve base, the valve flap includes a conductive material, and the plurality of conductors are arranged as follows: when the valve flap is in the closed position, the conductive material of the valve flap contacts the plurality of conductors to form a conductive path in the mechanical one-way valve, and when the valve flap is in the open position, the conductive material of the valve flap does not contact at least one of the plurality of conductors, so that no conductive path is formed in the mechanical one-way valve.
[0010] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is easy to detect the position state of the one-way valve, so as to judge its position state and whether it has a stuck fault.
[0011] In a preferred embodiment of the present invention, the valve base includes a side wall and an inner flange, and the plurality of conductors include a first conductor and a second conductor that penetrate the side wall and the inner flange of the valve base and are respectively arranged on both sides of the valve base.
[0012] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is easy to detect the position state of the one-way valve, so as to judge its position state and whether it has a stuck fault.
[0013] In a preferred embodiment of the present utility model, the first conductor and the second conductor are located on a vertical axis vertically passing through the center of the valve shaft.
[0014] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is easy to detect the position state of the one-way valve, so as to judge its position state and whether it has a stuck fault.
[0015] In a preferred embodiment of the present invention, the first conductor and the second conductor are arranged such that when the valve flap is in a closed position, the conductive material of the valve flap is in contact with the first conductor and the second conductor, and when the valve flap is in an open position, the conductive material of the valve flap is not in contact with at least one of the first conductor and the second conductor.
[0016] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is easy to detect the position state of the one-way valve, so as to judge its position state and whether it has a stuck fault.
[0017] In a preferred embodiment of the present invention, the shutter base includes a middle beam extending between the side walls, and the plurality of electrical conductors further includes a middle electrical conductor penetrating the middle beam.
[0018] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is easy to detect the position state of the one-way valve, so as to judge its position state and whether it has a stuck fault.
[0019] In an alternative embodiment of the present invention, the valve flap comprises an electrically conductive material arranged on the valve flap.
[0020] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is convenient to detect the position status of the one-way valve and can save costs.
[0021] In a preferred embodiment of the present invention, the valve flap is made of a conductive material.
[0022] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is convenient to detect the position status of the one-way valve and it can be more efficient.
[0023] In a preferred embodiment of the present invention, the plurality of conductors are interference-fitted with the valve substrate.
[0024] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: ensuring the airtightness of the one-way valve.
[0025] In an alternative embodiment of the present invention, epoxy resin glue is filled between the plurality of conductors and the valve substrate.
[0026] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: ensuring the airtightness of the one-way valve.
[0027] In an alternative embodiment of the present invention, the valve base includes a side wall, and the plurality of conductors include a first conductor and a second conductor that are located on a portion of the side wall covering the valve base and are respectively arranged on both sides of the valve base.
[0028] According to the above technical solution, the mechanical one-way valve of the utility model can achieve the following beneficial effects: it is easy to detect the position state of the one-way valve, so as to judge its position state and whether it has a stuck fault.
[0029] It should be understood that the above utility model content is provided to introduce a selection of concepts further described in the detailed description in a simplified form. It is not meant to identify key or essential features of the claimed subject matter, the scope of which is solely defined by the appended claims. In addition, the claimed subject matter is not limited to implementations that address any disadvantages noted above or in any part of this disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Further features and exemplary embodiments and advantages of the present invention are explained in more detail below with reference to the accompanying drawings. It will be appreciated that this embodiment is not exhaustive of the full scope of the present invention. It will be further appreciated that some or all of the features described below may also be combined in other ways, including:
[0031] Figure 1 It is a schematic diagram of a mechanical one-way valve according to the utility model;
[0032] Figure 2 It is a front view of a valve base of a mechanical one-way valve according to the utility model;
[0033] Figure 3 It is a left side view of the mechanical one-way valve according to the utility model;
[0034] Figure 4 It is a right side view of the mechanical one-way valve according to the utility model;
[0035] Figure 5 It is a schematic diagram of the mechanical one-way valve according to the utility model in a closed state;
[0036] Figure 6 It is a schematic diagram of the mechanical one-way valve according to the utility model in an open state.
[0037] Reference numerals list
[0038] 100 Mechanical one-way valve;
[0039] 101 valve base;
[0040] 101w valve base side wall;
[0041] 101f inner flange of valve base;
[0042] 101b valve base middle beam;
[0043] 102 Electrical conductors;
[0044] 102a a first electrical conductor;
[0045] 102b a second electrical conductor;
[0046] 102c a third conductor;
[0047] 103 valve flap;
[0048] 104 Torsion spring;
[0049] 105 Valve shaft. DETAILED DESCRIPTION
[0050] The present invention is described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the present invention are described. Obviously, all features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any way. Any feature disclosed in this specification, unless otherwise described, can be replaced by other alternative features that are equivalent or have similar purposes, that is, unless otherwise described, each feature is just an example of a series of equivalent or similar features. The technical solution of the present invention is described in many aspects in combination with the figures and embodiments below.
[0051] As used herein, the term "flow direction" refers to the direction of the fluid flow path through a mechanical check valve.
[0052] In this document, the terms "inside", "outside", "inward", "outward", "proximal", "distal", etc. are only used to describe the relative positions of various elements. As used herein, "inside" or similar expressions and "outside" or similar expressions refer to the inside and outside with the side wall of the valve base as the interface.
[0053] In this document, serial numbers "first", "second", etc. do not represent order (for example, do not imply a precedence relationship unless explicitly stated) or priority or importance. The above serial numbers are only used to indicate that they are different and independent devices, elements or steps.
[0054] Figure 1 is a schematic diagram of a mechanical one-way valve 100 according to the utility model, and Figure 2 1 is a front view of a valve base 101 of a mechanical one-way valve 100 according to the utility model. The mechanical one-way valve 100 according to the utility model can be used for flow diversion and flow limiting, for example, for an aircraft air management system, but can also be used in other application scenarios requiring flow diversion and flow limiting of a fluid. As shown in the figure, the mechanical one-way valve 100 includes a valve base 101, a plurality of conductors 102, a valve flap 103, a torsion spring 104 and a valve shaft 105.
[0055] The valve base 101, as the base of the mechanical one-way valve 100, can be used to install other components of the mechanical one-way valve 100. Preferably, the valve base 101 is substantially cylindrical. The valve base 101 includes a valve base side wall 101w, in which a flow path is defined. The valve base 101 also includes an inner flange 101f extending inward from the inner side of the valve base side wall 101w. More preferably, the valve base 101 also includes an intermediate beam 101b, which extends in the diameter direction within the valve base 101, and the intermediate beam 101b is preferably integral with the inner flange 101f of the valve base 101.
[0056] The valve flap 103 is installed in the valve base 101, and is configured to move between an open position and a closed position to guide or limit the flow of the fluid. When the valve flap 103 is in the open position, the mechanical one-way valve 100 is in an open state, and the fluid can pass through the mechanical one-way valve 100; when the valve flap 103 is in the closed position, the mechanical one-way valve 100 is in a closed state, and the fluid cannot pass through the mechanical one-way valve 100. Specifically, the mechanical one-way valve 100 includes two valve flaps 103. For the cylindrical valve base 101, the valve flap 103 is a semicircular component, and the two valve flaps 103 can be combined into a full circle. The valve flap 103 is configured with one or more pivot arms extending from the valve flap 103, and the valve flap 103 is attached to the valve shaft 105 via the pivot arm, so that the valve flap 103 can pivot around the valve shaft 105 to move between the open position and the closed position. When the valve flap 103 is in the closed position, it abuts against the inner flange 101f of the valve base 101. Preferably, when the valve flap 103 is in the closed position, it does not substantially contact the side wall 101w of the valve base 101. The valve flap 103 comprises a conductive material. Preferably, the valve flap 103 is made entirely of a conductive material. Alternatively, the mechanical one-way valve 100 is partially made of a conductive material. Alternatively, the valve flap 103 comprises a conductive material arranged on the valve flap 103, for example, a conductive path composed of a conductive material arranged on each valve flap 103.
[0057] The torsion spring 104 is installed in the valve base 101 and on the valve shaft 105. The torsion spring 104 includes a coiled body portion and two legs extending from the coiled body portion. The coiled body portion surrounds the valve shaft 105, and the two legs of the torsion spring 104 abut against the valve flap 103. The torsion spring 104 is configured to bias the valve flap 103 to a closed position. More specifically, when there is no air supply flow in the system, due to the bias of the torsion spring 104, the valve flap 103 is located in the initial closed position, and the mechanical one-way valve 100 is in a closed state; when the air flows from a specified direction and the air flow pressure reaches a preset value, the valve flap 103 can be pushed to overcome the torque of the torsion spring 104 and rotate around the valve shaft 105, so that the mechanical one-way valve 100 is transformed into an open state; and if the air flows in the opposite direction of the specified direction, the air flow pressure and the torsion spring 104 will act on the valve flap 103 together, making it stationary in the closed position, and the mechanical one-way valve 100 will also remain in a closed state. Preferably, the torsion spring 104 is made of a conductive material. Alternatively, the torsion spring 104 is made of a non-conductive material.
[0058] The valve shaft 105 is diametrically mounted on the valve base 101 so that the valve flap 103 pivots thereabout to move between the closed position and the open position. The winding body portion of the torsion spring 104 surrounds the valve shaft 105. The pivot arm of the valve flap 103 is attached to the valve shaft 105.
[0059] The plurality of conductors 102 are arranged such that when the valve flap 103 is in the closed position, a conductive path can be formed in the mechanical one-way valve 100, and when the valve flap 103 is in the open position, no conductive path is formed in the mechanical one-way valve 100. The conductors 102 are insulated from the valve base 101. Preferably, the plurality of conductors 102 include a first conductor 102a and a second conductor 102b that penetrate or are embedded in the side wall 101w and the inner flange 101f of the valve base 101 and are respectively arranged on both sides of the valve base 101, and the first conductor 102a and the second conductor 102b are located on a vertical axis that vertically passes through the center of the valve shaft 105. More preferably, the first conductor 102a and the second conductor 102b are arranged such that: when the valve flap 103 is in the closed position, the conductive material of the valve flap 103 contacts the first conductor 102a and the second conductor 102b to form a conductive path, and when the valve flap 103 is in the open position, the conductive material of the valve flap 103 does not contact at least one of the first conductor 102a and the second conductor 102b. More preferably, in an embodiment where the valve base 101 includes a middle beam 101b extending between the side walls 101w, the plurality of conductors 102 further include a middle conductor 101c penetrating or embedded in the middle beam 101b to improve the stability of the conductive path. Alternatively, the conductor 102 may be coated on the valve base 101 of the mechanical one-way valve 100, for example, the first conductor 102a and the second conductor 102b may be coated on the side wall 101w and the inner flange 101f of the valve base 101, and the middle conductor 102c may be protected on the middle beam 101b. Preferably, the plurality of conductors 102 and the valve base 101 are interference fit to ensure the airtightness of the mechanical one-way valve 100. Alternatively, epoxy resin glue is filled between the plurality of conductors 102 and the valve base 101 to ensure the airtightness of the mechanical one-way valve 100.
[0060] Figure 3 It is a left side view of the mechanical one-way valve 100 according to the utility model. Figure 4 It is a right side view of the mechanical one-way valve 100 according to the utility model. In the preferred embodiment shown in the figure, the conductor 102 (the first conductor 102a and the second conductor 102b) penetrates the side wall 101w of the valve base 101, so that the external detection device can be electrically connected with the conductor 102. And the position of the conductor 102 is relatively backward in the flow direction, so that the valve flap 103 is more reliably located in the valve base 101. Alternatively, the position of the conductor 102 can also be centered on the valve base side wall 101w in the flow direction.
[0061] Figure 5FIG. 1 is a schematic diagram of a mechanical one-way valve 100 according to the present invention in a closed state, in order to illustrate the contact between the valve flap 103 and the intermediate conductor 102c. Figure 5 The torsion spring 104 and the valve shaft 105 are omitted. As shown in the figure, when the valve flap 103 of the mechanical one-way valve 100 is in the closed position, the mechanical one-way valve 100 is in a closed state, and the valve flap 103, preferably the conductive material of the valve flap 103, is in contact with each conductor 102, so that a conductive path can be formed in the mechanical one-way valve 100. Therefore, at this time, the two detection ends of the contact resistance detector are respectively contacted with the conductors 102 (conductors 102a, 102b) on both sides of the valve substrate 101, and the resistance value displayed by the resistance detector will be less than the predetermined value. Figure 6 It is a schematic diagram of the mechanical one-way valve 100 in an open state according to the utility model. As shown in the figure, when the valve flap 103 of the mechanical one-way valve 100 is in the open position, the mechanical one-way valve 100 is in the open state, and at this time, the valve flap 103, preferably the conductive material of the valve flap 103, does not contact all the conductors 102, so that a conductive path cannot be formed in the mechanical one-way valve 100. Therefore, at this time, the two detection ends of the contact resistance detector are respectively contacted with the conductors 102 (conductors 102a, 102b) on both sides of the valve substrate 101, and the resistance value displayed by the resistance detector will be greater than the predetermined value. Therefore, the position state of the mechanical one-way valve 100 can be judged by comparing the resistance value displayed by the resistance detector with the predetermined value.
[0062] The following describes various embodiments of the mechanical one-way valve 100 according to the utility model. It should be noted that the embodiments of the utility model are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the utility model, and to enable those of ordinary skill in the art to understand the utility model and design various embodiments with various modifications suitable for specific purposes.
[0063] <First Embodiment>
[0064] In the first embodiment of the utility model, the multiple conductors 102 of the mechanical one-way valve 100 include a first conductor 102a, a second conductor 102b and an intermediate conductor 102c. Two opposite holes are provided on the valve base side wall 101w, and the two holes are located on a vertical axis that vertically passes through the center of the valve shaft 105. A groove connected to the holes is provided at positions corresponding to the two holes on the valve base inner flange 101f, and the groove opens to the valve flap 103. The first conductor 102a and the second conductor 102b penetrate the valve base side wall 101w at relative positions on the valve base side wall 101w and are embedded in the valve base inner flange 101f, so that the first conductor 102a and the second conductor 102b have a surface on the valve base inner flange 101f that can contact the valve flap 103. A middle groove is provided on the valve base middle beam 101b, which is preferably also located on a vertical axis perpendicularly passing through the center of the valve shaft 105, and opens to the valve flap 103. The middle conductor 102c is embedded in the middle groove on the valve base middle beam 101b.
[0065] In the first embodiment of the present invention, the first conductor 102a and the second conductor 102b are interference-fitted with the corresponding holes on the side wall 101w of the valve base.
[0066] In the first embodiment of the present invention, the valve flap 103 is made of conductive material.
[0067] <Second Embodiment>
[0068] In the second embodiment of the present invention, the torsion spring 104 is made of a conductive material. The valve flap 103 is made of a conductive material. The torsion spring 104 is configured to maintain contact with the valve flap 103, thereby the intermediate conductor 102c can be omitted compared with the first embodiment.
[0069] In the second embodiment of the present invention, the first conductor 102a and the second conductor 102b are not interference-fitted with the corresponding holes on the side wall 101w of the valve base, but epoxy resin glue is filled therebetween.
[0070] <Third Embodiment>
[0071] In the third embodiment of the utility model, a plurality of conductors 102 cover the valve base 101 at corresponding positions of the valve base 101, that is, no holes or grooves are provided on the valve base 101, and instead, the conductors 102 are configured as conductive material strips covering corresponding positions of the side wall 101w, the inner flange 101f and / or the middle beam 101b of the valve base 101. In this way, the airtightness of the mechanical one-way valve 100 can be further ensured.
[0072] <Fourth Embodiment>
[0073] In the fourth embodiment of the present invention, the valve flap 103 is not made of a conductive material, but includes a conductive material arranged on the valve flap 103, for example, includes a conductive path composed of a conductive material arranged on each valve flap 103. When the valve flap 103 is in a closed position, the conductive path composed of the conductive material contacts the corresponding conductor 102, thereby forming a conductive path in the mechanical one-way valve 100; when the valve flap 103 is in an open position, the conductive path composed of the conductive material does not contact at least one of the first conductor 102a and the second conductor 102b.
[0074] In this document, the terms "include", "comprises" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, structure or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, structure or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, structure or device that includes the elements.
Claims
1. A mechanical one-way valve, the mechanical one-way valve is used for guiding and limiting flow, the mechanical one-way valve comprises a valve base, a valve flap, a valve shaft and a torsion spring, the valve flap is configured to move between a closed position and an open position, It is characterized in that The mechanical one-way valve further comprises a plurality of conductors, which are arranged on the valve substrate and insulated from the valve substrate. The valve flap comprises an electrically conductive material, The multiple conductors are arranged such that when the valve flap is located in the closed position, the conductive material of the valve flap contacts the multiple conductors to form a conductive path in the mechanical one-way valve, and when the valve flap is located in the open position, the conductive material of the valve flap does not contact at least one of the multiple conductors to form a conductive path in the mechanical one-way valve.
2. The mechanical one-way valve according to claim 1, characterized in that: The valve base includes a side wall and an inner flange, and the plurality of conductors include a first conductor and a second conductor that penetrate the side wall and the inner flange of the valve base and are respectively arranged at two sides of the valve base.
3. The mechanical one-way valve according to claim 2, characterized in that: The first conductor and the second conductor are located on a vertical axis that vertically passes through the center of the valve shaft.
4. The mechanical one-way valve according to claim 3, characterized in that: The first conductor and the second conductor are arranged such that when the valve flap is located in the closed position, the conductive material of the valve flap is in contact with the first conductor and the second conductor, and when the valve flap is located in the open position, the conductive material of the valve flap is not in contact with at least one of the first conductor and the second conductor.
5. The mechanical one-way valve according to claim 4, characterized in that: The shutter base includes a middle beam extending between the side walls, and the plurality of electrical conductors further include a middle electrical conductor penetrating the middle beam.
6. The mechanical one-way valve according to claim 1, characterized in that: The valve flap includes an electrically conductive material disposed on the valve flap.
7. The mechanical one-way valve according to claim 1, characterized in that: The valve flap is made of conductive material.
8. The mechanical one-way valve according to claim 1, characterized in that: The plurality of electrical conductors are interference-fitted with the valve base.
9. The mechanical one-way valve according to claim 1, characterized in that: Epoxy resin glue is filled between the plurality of conductors and the valve substrate.
10. The mechanical one-way valve according to claim 1, characterized in that: The valve base includes a side wall, and the plurality of conductors include a first conductor and a second conductor that are located at a portion of the side wall covering the valve base and are respectively arranged at two sides of the valve base.