A circumferentially distributed regulating valve

Abstract

The application belongs to the technical field of regulating valve design, and particularly relates to a circumferential distributed regulating valve, which comprises a valve body with a plurality of circumferentially distributed flow-through holes; a plurality of valve spools arranged in the flow-through holes, each of which is provided with a valve hole and has an upper shaft neck and a lower shaft neck, wherein the lower shaft neck is mounted on the inner wall of the corresponding flow-through hole, and the upper shaft neck extends out of the outer wall of the corresponding flow-through hole; a plurality of linkage sections, each of which corresponds to part of the valve spools; a plurality of connecting rods, one end of each of which is hinged to each linkage section; and a plurality of rocker arms, one end of each of which is hinged to the other end of each connecting rod, and the other end of each of which is connected to the upper shaft neck of the corresponding part of the valve spools.

Description

Technical Field

[0001] This application belongs to the field of control valve design technology, specifically relating to a circumferential distributed control valve. Background Technology

[0002] In the testing of aero-engines and their gas turbines, including tests of components such as the core engine, compressor, combustion chamber, and turbine, the design uses flow control valves to regulate the intake pressure and flow rate. Currently, most of these are butterfly valves or sleeve valves, which are difficult to simultaneously meet the requirements of high precision, linearity, and rapid regulation of flow over a wide range, as well as low flow resistance, low leakage, good safety, small size, and light weight. Therefore, this application is hereby submitted.

[0003] It should be noted that the above background information is only used to assist in understanding the inventive concept and technical solution of this application, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0004] The purpose of this application is to provide a circumferentially distributed control valve to overcome or mitigate at least one of the known technical defects.

[0005] The technical solution of this application is:

[0006] A circumferentially distributed control valve, comprising:

[0007] The valve body has multiple flow holes distributed circumferentially.

[0008] Multiple valve cores are provided in each flow hole, each having a valve hole and an upper journal and a lower journal, wherein the lower journal is mounted on the inner wall of the corresponding flow hole, and the upper journal extends from the outer wall of the corresponding flow hole;

[0009] Multiple linkage sections, each linkage section corresponds to a portion of the valve core;

[0010] Multiple sets of connecting rods, one end of which is hinged to each linkage segment;

[0011] Multiple rocker arms, one end of which is hinged to the other end of each connecting rod, and the other end is connected to the upper journal of the corresponding valve core.

[0012] According to at least one embodiment of this application, in the above-described circumferentially distributed regulating valve, the valve body is annular, and each flow hole is distributed circumferentially on its sidewall.

[0013] According to at least one embodiment of this application, the circumferentially distributed control valve described above further includes:

[0014] The front end is an annular shell, and the outlet end is connected to the front end of the valve body;

[0015] The front conical inner shell has its open end connected to the front end of the valve body. Its interior is connected to the through hole in the middle of the valve body. It is located inside the front annular outer shell and forms a front channel with the front annular outer shell. The front channel connects to each flow hole.

[0016] The rear annular housing has an inlet end connected to the rear end of the valve body;

[0017] The rear conical inner shell has its open end connected to the rear end of the valve body. Its interior is connected to the through hole in the middle of the valve body. It is located inside the rear annular outer shell and forms a rear channel with the rear annular outer shell. The rear channel connects to each flow hole.

[0018] According to at least one embodiment of this application, in the above-described circumferentially distributed regulating valve, each valve core is in the shape of a plug and has a conical surface fit with the inner and outer walls of the corresponding flow hole.

[0019] According to at least one embodiment of this application, in the above-described circumferentially distributed regulating valve, the valve holes on each valve core are trapezoidal and have the same taper.

[0020] According to at least one embodiment of this application, the circumferentially distributed control valve described above further includes:

[0021] Multiple hydraulic cylinders are hinged between various linkage sections and valve bodies.

[0022] According to at least one embodiment of this application, the circumferentially distributed control valve described above further includes:

[0023] The guide rail is connected to the valve body and cooperates with the slide rail between each linkage section.

[0024] According to at least one embodiment of this application, in the above-mentioned circumferential distributed regulating valve, the guide rail is divided into multiple segments, each segment is slide-rail matched with each linkage segment, and is hinged to the corresponding hydraulic cylinder. Attached Figure Description

[0025] Figure 1 This is a schematic cross-sectional view of the circumferentially distributed control valve provided in an embodiment of this application;

[0026] Figure 2 yes Figure 1 Sectional view along axis AA;

[0027] Figure 3 This is a partial schematic diagram of a circumferentially distributed control valve provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the valve core provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the stroke of the circumferential distributed control valve when it is fully open and fully closed, provided in an embodiment of this application.

[0030] in:

[0031] 1-Valve body; 2-Valve core; 3-Linkage section; 4-Connecting rod; 5-Rock arm; 6-Front end annular outer shell; 7-Front end conical inner shell; 8-Rear end annular outer shell; 9-Rear end conical inner shell; 10-Guide rail; 11-Hydraulic cylinder.

[0032] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0033] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0034] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0035] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0036] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0037] A circumferentially distributed control valve, comprising:

[0038] Valve body 1 has multiple flow holes distributed circumferentially;

[0039] Multiple valve cores 2 are provided in each flow hole, each having a valve hole and an upper journal and a lower journal, wherein the lower journal is installed on the inner wall of the corresponding flow hole, and the upper journal extends from the outer wall of the corresponding flow hole;

[0040] Multiple linkage segments 3, each linkage segment 3 corresponds to a portion of valve core 2;

[0041] Multiple sets of connecting rods 4, one end of which is hinged to each linkage segment 3;

[0042] Multiple rocker arms 5, one end of which is hinged to the other end of each set of connecting rods 4, and the other end is connected to the upper journal of the corresponding part of the valve core 2.

[0043] In the circumferential distributed regulating valve disclosed in the above embodiments, the valve body 1 is designed to have multiple flow holes, and a valve core 2 with a valve hole is provided in each flow hole. The valve core 2 is divided into multiple parts according to the number of linkage sections 3. Thus, by driving each linkage section 3, the valve core 2 of the corresponding part can be rotated through the connecting rod 4 and rocker arm 5 of the corresponding group, thereby adjusting the opening degree of the circumferential distributed regulating valve hole in the flow hole, thereby regulating the flow rate and pressure.

[0044] In the testing of aero-engines and their gas turbines as a whole or component, the circumferentially distributed regulating valve disclosed in the above embodiments is used to regulate flow and pressure. When the flow rate is large, all linkage sections 3 can be driven simultaneously to control the rotation of all valve cores 2, thereby regulating flow and pressure. When the flow rate is large, a larger number of linkage sections 3 can be driven simultaneously to control the rotation of a larger portion of valve cores 2, thereby regulating flow and pressure. When the flow rate is small, a smaller number of linkage sections 3 can be driven simultaneously to control the rotation of a smaller portion of valve cores 2, thereby regulating flow and pressure. This enables high-precision regulation over a large flow range without the need to design and use multiple types and sizes of pipelines and valves, thus reducing flow resistance.

[0045] In one specific embodiment, there are four linkage sections 3, and the corresponding valve cores 2 are divided into four parts, each with five valve cores, which are located in four quadrants in the circumferential direction. When regulating a large flow rate, four linkage sections 3 can be driven simultaneously to control the rotation of twenty valve cores 2 to regulate the flow rate and pressure. When regulating a relatively large flow rate, two linkage sections 3 can be driven simultaneously to control the rotation of ten valve cores 2 in the first, third, or second and fourth quadrants to regulate the flow rate and pressure. When regulating a relatively small flow rate, one linkage section 3 can be driven simultaneously to control the rotation of five valve cores 2 in the first, second, third, or fourth quadrants to regulate the flow rate and pressure. The relationship between the opening degree of the circumferentially distributed regulating valve orifice of each valve core 2 in the flow orifice and the resistance coefficient is shown in the table below. Among them, the resistance coefficient is relatively small for opening degrees of 30% to 100%. drag coefficient ζ ∞ 6000 2500 810 150 48 17.5 7.7 2.75 0.51 0.05

[0046] In the circumferential distributed control valve disclosed in the above embodiments, a large valve is designed by combining multiple identical individual valve cores 2. Each valve core 2 has a small absolute size, making it easy to ensure machining accuracy, with small thermal deformation, small gap with valve body 1, and can be finely adjusted, making leakage easy to control. Furthermore, the rotational inertia of a single valve core 2 is small, and the adjustment stroke is small, enabling rapid adjustment of flow rate. In addition, only the valve core 2 is a moving part in each flow hole, which can reduce the occurrence of wear and debris falling off parts, resulting in high safety. Moreover, the overall structure is compact, and it can be designed with small size and weight.

[0047] In some optional embodiments, in the above-mentioned circumferentially distributed regulating valve, the valve body 1 is annular, and each flow hole is distributed circumferentially on its side wall. The middle through hole can be used as an intermediate channel to connect the internal duct of the aero-engine and its gas turbine as a whole or component, which facilitates the conduct of dual-duct tests.

[0048] In some tests of aero-engines, gas turbines, or components, it is not necessary to supply air to the internal duct. In such cases, the aforementioned circumferential distributed control valve can be designed to also include:

[0049] The front annular housing 6 has its outlet end connected to the front end of the valve body 1;

[0050] The front conical inner shell 7 has its open end connected to the front end of the valve body 1. Its interior is connected to the middle through hole of the valve body 1. It is located inside the front annular outer shell 6 and forms a front channel with the front annular outer shell 6. The front channel is connected to each flow hole.

[0051] The rear annular housing 8 has its inlet end connected to the rear end of the valve body 1;

[0052] The rear conical inner shell 9 has its open end connected to the rear end of the valve body 1 and its interior communicates with the middle through hole of the valve body 1. It is located inside the rear annular outer shell 8 and forms a rear channel with the rear annular outer shell 8. The rear channel communicates with each flow hole.

[0053] In the circumferentially distributed control valve disclosed in the above embodiments, the through hole in the middle of the valve body 1 is blocked by the front conical inner shell 7 and the rear conical inner shell 9, leaving only the flow holes distributed circumferentially on its side wall to connect to the outer bypass through the front channel and the rear channel. This allows for testing of only the outer bypass. Furthermore, the front conical inner shell 7 and the rear conical inner shell 9 are streamlined as a whole, resulting in less resistance.

[0054] In some optional embodiments, in the above-mentioned circumferential distributed regulating valve, each valve core 2 is in the shape of a plug, and its inner and outer walls are conically fitted with the corresponding flow holes. This facilitates the adjustment of the gap between each valve core 2 and the inner and outer walls of the flow holes on the valve body 1, so that scraping and jamming do not occur, thereby reducing leakage.

[0055] In some alternative embodiments, in the circumferentially distributed control valve described above, the valve orifices on each valve core 2 are trapezoidal and have the same taper, so as to have a larger flow area.

[0056] In some optional embodiments, the circumferentially distributed control valve described above further includes:

[0057] Multiple hydraulic cylinders 11 are hinged between each linkage section 3 and the valve body 1. Thus, each linkage section 3 can be driven by the hydraulic cylinders 11, which in turn drives the valve core 2 to rotate. The opening of the valve orifice in the flow hole is adjusted in a circumferentially distributed manner. The absolute size of each valve core 2 is small, and the overall switching stroke is short. The maximum speed of the hydraulic cylinder 11 can reach 280 mm / s. The adjustment time for the valve orifice to open and close in the flow hole can be completed within 0.5 seconds. Moreover, the stroke of the hydraulic cylinder and the stroke of the valve core 2 have good linearity throughout the entire range, thereby achieving linear and rapid adjustment.

[0058] In some optional embodiments, the circumferentially distributed control valve described above further includes:

[0059] The guide rail 10 is connected to the valve body 1 and is in sliding cooperation with each linkage section 3.

[0060] In some alternative embodiments, in the above-described circumferentially distributed regulating valve, the guide rail 10 is divided into multiple segments, each segment is slide-rail matched with each linkage segment 3, and is hinged to the corresponding hydraulic cylinder 11.

[0061] In the circumferential distributed control valve disclosed in the above embodiments, the connection can be a fixed connection or a detachable connection depending on the actual situation. Specifically, it can be a welding, threaded connection or a hinge connection depending on the actual situation. The hinge can be a pin, a spherical bearing or the like. Bearings or other components can be provided at the contact points between the rotating parts and the fixed parts to reduce friction, and gaskets or other components can be provided for sealing.

[0062] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A circumferentially distributed control valve, characterized in that, include: The valve body (1) has multiple flow holes distributed circumferentially. Multiple valve cores (2) are provided in each flow hole, each having a valve hole and an upper journal and a lower journal, wherein the lower journal is installed on the inner wall of the corresponding flow hole and the upper journal extends from the outer wall of the corresponding flow hole; Multiple linkage segments (3), each linkage segment (3) corresponds to a portion of the valve core (2); Multiple sets of connecting rods (4), one end of which is hinged to each linkage segment (3); Multiple rocker arms (5) are hinged at one end to the other end of each group of connecting rods (4) and at the other end to the upper journal of the corresponding valve core (2); There are four linkage sections (3), and the corresponding valve cores (2) are divided into four parts, each with five valve cores, which are located in four quadrants in the circumferential direction. When adjusting a large flow rate, the four linkage sections (3) are driven simultaneously to control the rotation of twenty valve cores (2) to adjust the flow rate and pressure. When adjusting a larger flow rate, the two linkage sections (3) are driven simultaneously to control the rotation of ten valve cores (2) in the first, third, or second and fourth quadrants to adjust the flow rate and pressure. When adjusting a smaller flow rate, the one linkage section (3) is driven simultaneously to control the rotation of five valve cores (2) in the first, second, third, or fourth quadrants to adjust the flow rate and pressure.

2. The circumferentially distributed regulating valve according to claim 1, characterized in that, The valve body (1) is annular, and each flow hole is distributed circumferentially on its side wall.

3. The circumferentially distributed regulating valve according to claim 2, characterized in that, Also includes: The front end is an annular shell (6), and the outlet end is connected to the front end of the valve body (1); The front conical inner shell (7) has its open end connected to the front end of the valve body (1), and its interior is connected to the middle through hole of the valve body (1). It is located inside the front annular outer shell (6) and forms a front channel with the front annular outer shell (6). The front channel is connected to each flow hole. The rear annular housing (8) has its inlet end connected to the rear end of the valve body (1); The rear conical inner shell (9) has its open end connected to the rear end of the valve body (1). Its interior is connected to the middle through hole of the valve body (1). It is located inside the rear annular outer shell (8) and forms a rear channel with the rear annular outer shell (8). The rear channel is connected to each flow hole.

4. The circumferentially distributed regulating valve according to claim 1, characterized in that, Each valve core (2) is in the shape of a plug, and its inner and outer walls are in conical fit with the corresponding flow holes.

5. The circumferentially distributed regulating valve according to claim 4, characterized in that, The valve holes on each valve core (2) are trapezoidal and have the same taper.

6. The circumferentially distributed regulating valve according to claim 1, characterized in that, Also includes: Multiple hydraulic cylinders (11) are hinged between each linkage section (3) and valve body (1).

7. The circumferentially distributed regulating valve according to claim 6, characterized in that, Also includes: The guide rail (10) is connected to the valve body (1) and cooperates with the slide rail between each linkage section (3).

8. The circumferentially distributed regulating valve according to claim 7, characterized in that, The guide rail (10) is divided into multiple sections, each section is slide-rail matched with each linkage section (3), and is hinged to the corresponding hydraulic cylinder (11).

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