control valve

Abstract

The utility model relates to valve structure technical field especially relates to a control valve, it includes: end cover, main valve block and main valve core etc. Main valve block is fixed on the end cover, forms the hollow channel in the inside of end cover and main valve block, and has the import and export, main valve core is slidably arranged in the hollow channel, and main valve core is hollow structure, and forms and has the multiple sets of throttling portion communicated to the hollow structure inside, and the annular gap is formed between the outer wall of throttling portion and the inner wall of main valve block. The utility model discloses through the multiple sets of throttling portion set up on main valve core, reduces the flow and pressure of fluid, through the annular gap formed between the outer wall of throttling portion and the inner wall of main valve block, avoids high pressure emulsion direct impact main valve core, can store emulsion through the annular gap, thereby further reduced pressure and flow impact, through the combined use of throttling portion and annular gap, can disperse pressure and flow impact, thereby improves the stability and reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of valve structure technology, and in particular to a control valve. Background Technology

[0002] Traditional manual support directional valves require manual operation to open their valve ports. When the push cylinder is started, the main valve port is opened slowly by hand, resulting in relatively small pressure and flow shocks. Currently, the electromagnetic pilot valve of the electro-hydraulic directional valve opens the main valve port rapidly once energized, with the pilot fluid controlling the opening of the main valve port in about 0.1 seconds. The typical high-pressure and high-flow operating conditions of the downhole fluid supply system cause a large pressure and flow shock when the push cylinder is started. This large pressure and flow shock can lead to a decrease in equipment stability and reliability. Utility Model Content

[0003] This invention provides a control valve to solve the defect in the prior art where the start-up of the push-pull oil cylinder generates large pressure and flow shocks, which leads to a decrease in the stability and reliability of the equipment.

[0004] This utility model provides a control valve, comprising:

[0005] End cap;

[0006] The main valve block is fixed on the end cover, forming a hollow channel inside the end cover and the main valve block, and has an inlet and an outlet;

[0007] The main valve core is slidably disposed in the hollow channel. The main valve core has a hollow structure and forms multiple sets of throttling sections that communicate with the interior of the hollow structure. An annular gap is formed between the outer wall of the throttling section and the inner wall of the main valve block.

[0008] According to the control valve provided by this utility model, the plurality of throttling sections include:

[0009] The first throttling orifice is located on the main valve core near the inlet;

[0010] The second throttling orifice is located near the outlet of the main valve core, and the diameter of the first throttling orifice is larger than the diameter of the second throttling orifice.

[0011] According to the control valve provided by this utility model, the plurality of throttling sections include:

[0012] The third throttling orifice is disposed between the first throttling orifice and the second throttling orifice along the axial direction of the main valve core.

[0013] According to the control valve provided by this utility model, the diameters of the first throttling orifice and the third throttling orifice gradually decrease along the direction from the outer side to the inner side of the main valve core.

[0014] According to the control valve provided by this utility model, first annular sealing grooves facing the main valve block are provided at both ends of the main valve core; the control valve further includes:

[0015] A dynamic seal is disposed within the first annular sealing groove.

[0016] The control valve provided by this utility model also includes:

[0017] The sealing components are located at both ends of the main valve core.

[0018] According to the control valve provided by this utility model, an annular groove is formed on the outer wall of the main valve core at the position of the throttling section, which cooperates with the inner wall of the main valve block to form the annular gap; and / or,

[0019] An annular groove is formed on the inner wall of the main valve block at the position of the inlet and the outlet, which forms the annular gap by cooperating with the outer wall of the main valve core.

[0020] The control valve provided by this utility model also includes:

[0021] Fasteners are used to secure the end cap and the main valve block.

[0022] According to the control valve provided by this utility model, a second annular sealing groove facing the main valve block is provided on the end cover; the control valve further includes:

[0023] A static seal is provided within the second annular sealing groove.

[0024] This utility model also provides a hydraulic support, including: the control valve of this utility model.

[0025] This utility model provides a control valve, comprising: an end cap, a main valve block, and a main valve core. The main valve block is fixed on the end cap, and a hollow channel is formed inside the end cap and the main valve block, having an inlet and an outlet. The main valve core is slidably disposed in the hollow channel. The main valve core has a hollow structure and forms multiple sets of throttling sections communicating with the interior of the hollow structure. An annular gap is formed between the outer wall of the throttling section and the inner wall of the main valve block. This utility model provides a control valve that, through the multiple sets of throttling sections on the main valve core, can reduce the flow rate and pressure of the fluid, thereby reducing pressure and flow shock. Furthermore, the annular gap formed between the outer wall of the throttling section and the inner wall of the main valve block prevents high-pressure emulsion from directly impacting the main valve core, and the emulsion can be temporarily stored through the annular gap, further reducing pressure and flow shock. The combined use of the throttling sections and the annular gap can disperse pressure and flow shock, thereby improving the stability and reliability of the equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the internal structure of the control valve provided in one embodiment of the present invention.

[0028] Figure label:

[0029] 1: End cap; 2: Main valve block; 21: Inlet; 22: Outlet; 3: Main valve core; 31: First throttling orifice; 32: Second throttling orifice; 33: Third throttling orifice; 4: Annular gap; 5: Dynamic seal; 6: Sealing component; 7: Fastener; 8: Static seal. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this embodiment.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0034] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] The following is combined Figure 1 This invention describes a control valve. The control valve includes: an end cap 1, a main valve block 2, and a main valve core 3, etc.

[0036] The main valve block 2 is fixed on the end cover 1, forming a hollow channel inside the end cover 1 and the main valve block 2, and has an inlet 21 and an outlet 22; the main valve core 3 is slidably disposed in the hollow channel, the main valve core 3 is a hollow structure, and has multiple sets of throttling parts that communicate with the interior of the hollow structure, and an annular gap 4 is formed between the outer wall of the throttling part and the inner wall of the main valve block 2.

[0037] Specifically, two end caps 1 are provided, located at both ends of the main valve block 2, for installing and fixing the main valve block 2. The main valve block 2 and the end caps 1 form a hollow channel inside the main valve block 2. The main valve core 3 can slide in the hollow channel. An inlet 21 and an outlet 22 are formed on the side wall of the main valve block 2. Both the inlet 21 and the outlet 22 can connect the hollow channel to the outside. High-pressure emulsion is delivered into the hollow channel through the inlet 21 and output from the hollow channel through the outlet 22.

[0038] The main valve core 3 has a hollow structure and is connected to the inlet 21 and the outlet 22 through multiple sets of throttling sections. Specifically, the high-pressure emulsion input through the inlet 21 is throttled by the corresponding throttling section and enters the hollow structure of the main valve core 3, and is transported towards the outlet 22. After secondary throttling by the corresponding throttling section, the high-pressure emulsion is finally output from the outlet 22.

[0039] In the above description, a throttling section refers to a component that controls the flow rate and pressure of a fluid by limiting the size of the fluid channel. In the following embodiments, a structure with multiple throttling orifices can be used to achieve its throttling effect; of course, other structures that can limit the size of the fluid channel, such as slots, can also be used. By providing a throttling section on the main valve core 3, the flow rate and pressure of the fluid can be reduced, thereby reducing pressure and flow shock; in addition, using a combination of multiple throttling sections can further reduce the shock.

[0040] An annular gap 4 is formed between the outer wall of the throttling section and the inner wall of the main valve block 2 to prevent the high-pressure emulsion from directly impacting the main valve core 3. The emulsion can be temporarily stored through the annular gap 4, thereby further reducing pressure and flow impact. Furthermore, the throttling section and the annular gap 4 are correspondingly arranged, with multiple sets of throttling sections and multiple sets of annular gaps 4, which can further reduce impact.

[0041] In the above description, the annular gap 4 can be formed by designing and machining annular grooves on the outer wall of the throttling section and / or the inner wall of the main valve block 2.

[0042] This utility model provides a control valve, comprising: an end cap 1, a main valve block 2, and a main valve core 3. The main valve block 2 is fixed to the end cap 1, forming a hollow channel inside the end cap 1 and the main valve block 2, and having an inlet 21 and an outlet 22. The main valve core 3 is slidably disposed in the hollow channel. The main valve core 3 has a hollow structure and forms multiple sets of throttling sections communicating with the interior of the hollow structure. An annular gap 4 is formed between the outer wall of the throttling section and the inner wall of the main valve block 2. The control valve provided by this utility model can reduce the flow rate and pressure of the fluid by providing multiple sets of throttling sections on the main valve core 3, thereby reducing its pressure and flow impact. In addition, the annular gap 4 formed between the outer wall of the throttling section and the inner wall of the main valve block 2 prevents high-pressure emulsion from directly impacting the main valve core 3. The emulsion can be temporarily stored through the annular gap 4, thereby further reducing pressure and flow impact. The combined use of the throttling section and the annular gap 4 can disperse pressure and flow impact, thereby improving the stability and reliability of the equipment.

[0043] In one embodiment of this utility model, the multiple sets of throttling sections include: a first throttling orifice 31 and a second throttling orifice 32. The first throttling orifice 31 is located near the inlet 21 of the main valve core 3; the second throttling orifice 32 is located near the outlet 22 of the main valve core 3, and the diameter of the first throttling orifice 31 is larger than the diameter of the second throttling orifice 32. Specifically, in this embodiment, the multiple sets of throttling sections consist of the first throttling orifice 31 and the second throttling orifice 32. During the movement of the main valve core 3, the first throttling orifice 31 is positioned opposite the inlet 21, and the second throttling orifice 32 is positioned opposite the outlet 22, thereby ensuring the flow of the medium. Furthermore, by optimizing the diameters of the first throttling orifice 31 and the second throttling orifice 32—that is, the diameter of the first throttling orifice 31 is larger than the diameter of the second throttling orifice 32—gradual throttling is achieved, strengthening the throttling effect and reducing pressure and flow impact.

[0044] In one embodiment of this utility model, the multiple throttling sections further include a third throttling orifice 33, which is disposed along the axial direction of the main valve core 3 between the first throttling orifice 31 and the second throttling orifice 32. In this embodiment, the throttling section further includes a third throttling orifice 33, which is disposed between the first throttling orifice 31 and the second throttling orifice 32. When the third throttling orifice 33 is opposite to the inlet 21, the second throttling orifice 32 is misaligned with the outlet 22 or only a small portion of the second throttling orifice 32 is opposite to the outlet 22, resulting in the medium being unable to be discharged or only a small amount of medium being discharged from the outlet 22. Therefore, the medium can be temporarily stored in the hollow structure of the main valve core 3 through the third throttling orifice 33. The third throttling orifice 33 in this embodiment has a similar function to the annular gap 4 in the above embodiment, except that the medium can be temporarily stored inside the main valve core 3 through the third throttling orifice 33, rather than in the annular gap 4.

[0045] In one embodiment of this utility model, the diameters of the first throttling orifice 31 and the third throttling orifice 33 gradually decrease along the direction from the outer side to the inner side of the main valve core 3. In this embodiment, by optimizing the diameters of the first throttling orifice 31 and the third throttling orifice 33 along the thickness direction of the main valve core 3, that is, by gradually decreasing the diameters along the direction from the outer side to the inner side, the throttling effect is further enhanced.

[0046] In one embodiment of this utility model, first annular sealing grooves facing the main valve block 2 are provided at both ends of the main valve core 3. The control valve in this embodiment also includes a dynamic seal 5, which is disposed within the first annular sealing groove. In this embodiment, by machining the first annular sealing groove on the main valve core 3 and providing the dynamic seal 5 inside, it is ensured that the medium will not leak during the movement of the main valve core 3.

[0047] In one embodiment of this utility model, the control valve further includes a sealing element 6, which is disposed at both ends of the main valve core 3. By providing the sealing element 6, the hollow structure inside the main valve core 3 is isolated from the hollow channel of the main valve block 2.

[0048] In one embodiment of this utility model, an annular groove is formed on the outer wall of the main valve core 3 at the position of the throttling section, which cooperates with the inner wall of the main valve block 2 to form an annular gap 4; and / or, an annular groove is formed on the inner wall of the main valve block 2 at the positions of the inlet 21 and the outlet 22, which cooperates with the outer wall of the main valve core 3 to form an annular gap 4. In this embodiment, an annular groove is machined on the outer wall of the main valve core 3 and / or on the inner wall of the main valve block 2 to cooperate with the outer wall of the main valve block 2 and form an annular gap 4 for temporarily storing the medium. Specifically, in this embodiment, an annular groove is machined on the outer wall of the main valve core 3 on the outside of the first throttling orifice 31; and an annular groove is machined on the inner wall of the main valve block 2 at the positions of the inlet 21 and the outlet 22, i.e. Figure 1 The structure shown.

[0049] In one embodiment of this utility model, the control valve further includes a fastener 7, which secures the end cap 1 and the main valve block 2. Preferably, the fastener 7 can be a bolt, and the end cap 1 and the main valve block 2 are fixedly connected by bolts.

[0050] In one embodiment of this utility model, a second annular sealing groove facing the main valve block 2 is provided on the end cap 1. The control valve in this embodiment also includes a static sealing element 8, which is disposed in the second annular sealing groove. The second annular sealing groove is machined and designed on the inner side of the end cap 1 for installing the static sealing element 8, thereby ensuring the sealing effect between the end cap 1 and the main valve block 2.

[0051] This utility model also provides a hydraulic support. The hydraulic support includes: the control valve described in the above embodiments of this utility model.

[0052] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A control valve, characterized in that, include: End cap (1); The main valve block (2) is fixed on the end cap (1), forming a hollow channel inside the end cap (1) and the main valve block (2), and has an inlet (21) and an outlet (22). The main valve core (3) is slidably disposed in the hollow channel. The main valve core (3) is a hollow structure and has multiple sets of throttling parts that communicate with the interior of the hollow structure. An annular gap (4) is formed between the outer wall of the throttling part and the inner wall of the main valve block (2).

2. The control valve according to claim 1, characterized in that, The multiple sets of throttling sections include: The first throttling orifice (31) is located on the main valve core (3) near the inlet (21); The second throttling orifice (32) is located on the main valve core (3) near the outlet (22), and the diameter of the first throttling orifice (31) is larger than the diameter of the second throttling orifice (32).

3. The control valve according to claim 2, characterized in that, The multiple sets of throttling sections include: The third throttling orifice (33) is disposed between the first throttling orifice (31) and the second throttling orifice (32) along the axial direction of the main valve core (3).

4. The control valve according to claim 3, characterized in that, The diameters of the first throttling orifice (31) and the third throttling orifice (33) gradually decrease from the outer side to the inner side of the main valve core (3).

5. The control valve according to claim 1, characterized in that, The main valve core (3) has first annular sealing grooves at both ends facing the main valve block (2); the control valve further includes: The dynamic seal (5) is located in the first annular sealing groove.

6. The control valve according to claim 1, characterized in that, Also includes: The sealing element (6) is located at both ends of the main valve core (3).

7. The control valve according to claim 1, characterized in that, An annular groove is formed on the outer wall of the main valve core (3) at the position of the throttling section, which forms the annular gap (4) by cooperating with the inner wall of the main valve block (2); and / or, An annular groove is formed on the inner wall of the main valve block (2) at the position of the inlet (21) and the outlet (22), which forms the annular gap (4) by cooperating with the outer wall of the main valve core (3).

8. The control valve according to any one of claims 1 to 7, characterized in that, Also includes: Fastener (7) is used to fix the end cap (1) and the main valve block (2).

9. The control valve according to any one of claims 1 to 7, characterized in that, The end cap (1) is provided with a second annular sealing groove facing the main valve block (2); the control valve further includes: The static sealing element (8) is located in the second annular sealing groove.

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