Bidirectional two-opening throttle ring and pipeline joint

Abstract

The utility model provides a bi-directional two-opening throttle ring and a pipeline joint, the throttle ring is arranged at the butt joint of a second pipeline joint and a first pipeline joint, the throttle ring comprises a limit structure and a guide structure, and the limit structure is fixedly connected with the guide structure; the diameter of the end face, away from the guiding structure, of the limiting structure is larger than that of the end face, away from the limiting structure, of the guiding structure. The end face, away from the first pipeline connector, of the guiding structure is provided with an axial through-flow hole extending towards the interior of the guiding structure, the end face, facing the first pipeline connector, of the limiting structure is provided with an axial flow limiting hole extending towards the interior of the limiting structure, and the axial through-flow hole communicates with the axial flow limiting hole. The outer side face of the limiting structure in the radial direction is provided with an inclined flow limiting hole penetrating through the end face, away from the guide structure, of the limiting structure. The throttling ring can achieve the bidirectional two-opening-degree function.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fluid system, concretely relates to a two-way two-opening throttle ring and pipe joint. BACKGROUND

[0002] The throttle ring is a control and adjustment element commonly used in the fluid system, and the traditional throttle ring usually has a fixed flow area smaller than the diameter of the upstream and downstream pipes to generate a specified flow resistance to the working medium in the fluid system or to control the flow of the working medium. However, in some special application scenarios, the system requires the working medium to flow in both directions, and the flow or flow resistance in the positive direction and the reverse direction should have a significant difference. The traditional fixed-aperture throttle ring cannot meet the use requirements, and additional flow paths and valves are usually required to realize the function of two-way two-opening, which greatly increases the complexity of the system.

[0003] To realize the two-way two-opening of the throttle ring, it is particularly important to design a two-way two-opening throttle ring. SUMMARY

[0004] The utility model aims at overcoming the insufficient of prior art, provide a two-way two-opening throttle ring and pipe joint.

[0005] The utility model provides a two-way two-opening throttle ring is set up in the butt joint place of second pipe joint and first pipe joint, it includes: limiting structure and guide structure, limiting structure with guide structure fixed connection, the end face diameter of limiting structure away from guide structure is greater than the end face diameter of guide structure away from limiting structure, the end face of guide structure away from first pipe joint is provided with the axial through -flow hole extending to its inside, the end face of limiting structure to first pipe joint is provided with the axial flow -limiting hole extending to its inside, the axial through -flow hole with axial flow -limiting hole intercommunication, the outer side of limiting structure in its radial direction is provided with the oblique flow -limiting hole through the end face of limiting structure away from guide structure, when fluid flows from guide structure to limiting structure, limiting structure and first pipe joint abut, fluid flows through axial through -flow hole, axial flow -limiting hole and oblique flow -limiting hole and enters first pipe joint from second pipe joint, when fluid flows from limiting structure to guide structure, the outer side of limiting structure in its radial direction and second pipe joint abut at the side wall of butt joint place, and the oblique flow -limiting hole is closed, and fluid flows through axial flow -limiting hole and axial through -flow hole and enters second pipe joint.

[0006] According to one embodiment of the utility model, at least a part of the outer side of the limiting structure in its radial direction is adapted to the side wall at the butt joint place of the second pipe joint, and the opening of the oblique flow -limiting hole is arranged at the adapted place.

[0007] According to one embodiment of the utility model, the axial throughflow hole is provided with a radial throughflow hole penetrating the side wall of the guide structure near the limiting structure; when fluid flows from the second pipe joint to the first pipe joint, the fluid flows through the axial throughflow hole, the radial throughflow hole, the gap between the limiting structure and the second pipe joint, and the oblique flow limiting hole in sequence and enters the first pipe joint.

[0008] According to one embodiment of the utility model, the guide structure is provided with a throughflow ring groove along the circumferential direction of the outer side in the radial direction of the guide structure near the limiting structure, and the radial throughflow hole is arranged in the throughflow ring groove.

[0009] According to one embodiment of the utility model, the throughflow ring groove is provided with a plurality of radial throughflow holes along the circumferential direction thereof.

[0010] According to one embodiment of the utility model, the axial throughflow hole is arranged at the central axis of the guide structure; the axial flow limiting hole is arranged at the central axis of the limiting structure, and the axial throughflow hole is coaxial with the axial flow limiting hole.

[0011] According to one embodiment of the utility model, a plurality of oblique flow limiting holes are arranged along the circumferential direction of the outer side in the radial direction of the limiting structure.

[0012] On the other hand, the utility model provides a pipe joint which comprises the above-mentioned first pipe joint, the second pipe joint and the throttle ring; the inner diameter of the pipeline at the butt joint of the second pipe joint is larger than the inner diameter of the pipeline at the butt joint of the first pipe joint, and the inner diameter of the pipeline at the butt joint of the second pipe joint is larger than the inner diameter of the pipeline of the adjacent section; the throttle ring can move along the axial direction of the second pipe joint inside the second pipe joint; when fluid flows from the second pipe joint to the first pipe joint, one end of the throttle ring cooperates with the end face of the first pipe joint near the second pipe joint; when fluid flows from the first pipe joint to the second pipe joint, the other end of the throttle ring is used for cooperating with the end face of the second pipe joint near the first pipe joint.

[0013] According to one embodiment of the utility model, the first pipe joint is a spherical pipe joint, the second pipe joint is a conical pipe joint; and the outer side in the radial direction of the limiting structure is a conical surface matched with the inner wall of the second pipe joint.

[0014] According to one embodiment of the utility model, the utility model further comprises a sleeve nut; the sleeve nut is arranged on the outer side in the radial direction at the butt joint of the first pipe joint and the second pipe joint to fixedly connect the first pipe joint and the second pipe joint; and the opening end of the oblique flow limiting hole at the end face of the limiting structure facing the first pipe joint is in communication with the inner diameter of the pipeline of the first pipe joint.

[0015] The bidirectional two-opening throttling ring according to the utility model realizes the function of bidirectional two-opening of the throttling ring by the fact that the flow area of the throttling ring when the fluid working medium flows to the left is larger than the flow area of the throttling ring when the fluid working medium flows to the right.

[0016] It should be appreciated that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the range of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following drawings are part of the specification of the utility model, which illustrates the example embodiments of the utility model, and the accompanying drawings and the description of the specification are used to illustrate the principle of the utility model.

[0018] Figure 1 is the cross-sectional view of the bidirectional two-opening throttling ring of one embodiment of the utility model;

[0019] Figure 2 is the cross-sectional view of the bidirectional two-opening throttling ring of another embodiment of the utility model.

[0020] Explanation of reference numerals:

[0021] Serial number 1: second pipe joint; serial number 2: first pipe joint; serial number 3: outer sleeve nut; serial number 4: throttling ring; serial number 5: guide structure; serial number 6: limiting structure; serial number 8: axial flow limiting hole; serial number 9: oblique flow limiting hole; serial number 10: axial through-flow hole; serial number 11: radial through-flow hole; serial number 12: through-flow ring groove. DETAILED DESCRIPTION

[0022] The features and example embodiments of each aspect of the utility model will be described in detail below, in order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model will be described in further detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the utility model, for example, to illustrate the principle of the utility model, and are not configured to limit the utility model. In addition, the components in the drawings are not necessarily drawn in proportion. For example, the size of some components in the drawings can be enlarged for other components or areas to help understand the embodiments of the utility model.

[0023] The positional words appearing in the following description are the directions shown in the drawings, and are not intended to limit the specific structure of the embodiments of the present application. In the description of the present application, it should be noted that, unless otherwise specified, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In addition, the terms "including", "containing", "having" or any other variants thereof are intended to cover non-exclusive inclusion, so that the inclusion of a series of structural elements or components not only includes those elements, but also includes other elements not explicitly listed or inherent in the structure, components. Without more limitations, the elements defined by the statement "including" do not exclude the presence of other identical elements in the article or device including the elements.

[0025] Spatial relationship terms such as "below", "under", "lower", "above", "upper", "on", "higher", etc. are used to facilitate the description to explain the position of one element relative to the second element, and these terms are intended to cover different orientations of the device in addition to the orientations shown in the drawings. In addition, for example, "one element is on / under another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and are not intended to specifically refer to order or sequence, and should not be considered as limiting. Similar terms represent similar elements throughout the description.

[0026] For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0027] Figure 1 is a cross-sectional view of a bidirectional two-opening throttling ring of an embodiment of the present application; Figure 2 is a cross-sectional view of a bidirectional two-opening throttling ring of another embodiment of the present application.

[0028] As Figure 1 and 2As shown, the utility model provides a two -way two -opening throttle ring 4, set in the butt joint of second pipeline joint 1 and first pipeline joint 2. Throttle ring 4 includes: limit structure 6 and guide structure 5, limit structure 6 and guide structure 5 fixed connection. The diameter of the end face of limit structure 6 away from guide structure 5 is greater than the diameter of the end face of guide structure 5 away from limit structure 6. The end face of guide structure 5 away from first pipeline joint 2 is provided with axially through -flow hole 10 extending to its interior, the end face of limit structure 6 towards first pipeline joint 2 is provided with axially flow -limiting hole 8 extending to its interior, and axially through -flow hole 10 and axially flow -limiting hole 8 are communicated. Limit structure 6 is provided with inclined flow -limiting hole 9 penetrating the end face of limit structure 6 away from guide structure 5 on the outer side surface of its radial direction (the serial number 7 in the figure). Figure 1

[0029] When fluid flows from guide structure 5 to limit structure 6, limit structure 6 abuts against first pipeline joint 2. Fluid flows from second pipeline joint 1 through axially through -flow hole 10, axially flow -limiting hole 8 and inclined flow -limiting hole 9 into first pipeline joint 2. When fluid flows from limit structure 6 to guide structure 5, the outer side surface of limit structure 6 in its radial direction abuts against second pipeline joint 1, and inclined flow -limiting hole 9 is closed. Fluid flows through axially flow -limiting hole 8 and axially through -flow hole 10 into second pipeline joint 1.

[0030] The throttle ring provided by the embodiment is moved in second pipeline joint through guide structure 5, and the range of movement of the throttle ring in second pipeline joint along with working medium is controlled through limit structure 6. Figure 1 When fluid working medium flows to the left (i.e. fluid flows from guide structure 5 to limit structure 6), axially through -flow hole 10, axially flow -limiting hole 8 and inclined flow -limiting hole 9 are in an open state (flow-through state). Figure 2 When fluid working medium flows to the right (i.e. fluid flows from limit structure 6 to guide structure 5), inclined flow -limiting hole 9 is closed, and axially through -flow hole 10 and axially flow -limiting hole 8 are open to flow through. As shown in Figure 1 2 As shown, using the throttle ring, the flow-through area when fluid working medium flows to the left is greater than the flow-through area when fluid working medium flows to the right, thereby realizing the function of two-way two-opening (i.e. different flow-through areas) of the throttle ring. The throttle ring can enable fluid system to have control ability of different flow and flow resistance in positive and reverse directions, and has simple structure, and can conveniently and reliably realize control of flow without additional pipeline and valve. The throttle ring can be applied to pneumatic valve, and the inflation and exhaust rate of the pneumatic valve is adjusted to control the opening and closing response thereof.

[0031] ​​The guide structure 5 can be shaped to match the second pipe joint 1, for example, the second pipe joint 1 is a conventional cylindrical structure, and the guide structure 5 can be a cylindrical body matching the second pipe joint 1. For example, the end face of the limiting structure 6 away from the guide structure 5 can be a plane. For example, the diameters of the axial flow limiting hole 8 and the inclined flow limiting hole 9 can be smaller than the diameter of the axial flow-through hole 10, and the axial flow limiting hole 8 and the inclined flow limiting hole 9 constitute the main flow resistance generating structure.

[0032] As shown in Figure 1 and 2 , according to an embodiment of the utility model, at least a part of the outer side of the limiting structure 6 in the radial direction (No. 7 in Figure 1 ) matches the side wall of the second pipe joint 1 at the joint, and the opening of the inclined flow limiting hole 9 is arranged at the matching position.

[0033] In this embodiment, for example, the second pipe joint 1 is a tapered pipe joint (the inner side of the end is tapered), and the circumferential side of the limiting structure 6 (No. 7 in Figure 1 ) is tapered to match it.

[0034] As shown in Figure 1 and 2 , according to an embodiment of the utility model, the axial flow-through hole 10 is provided with a radial flow-through hole 11 penetrating the side wall of the guide structure near the limiting structure 6. When the fluid flows from the second pipe joint 1 to the first pipe joint 2, the fluid flows through the axial flow-through hole 10, the radial flow-through hole 11, the gap between the limiting structure 6 and the second pipe joint 1 at the joint and the inclined flow limiting hole 9 in sequence and enters the first pipe joint 2.

[0035] As shown in Figure 1 and 2 , according to an embodiment of the utility model, the guide structure 5 is provided with a flow-through ring groove 12 along the circumferential direction of the outer side of the guide structure 5 in the radial direction near the limiting structure 7, and the radial flow-through hole 11 is arranged in the flow-through ring groove 12.

[0036] According to an embodiment of the utility model, the flow-through ring groove 12 is provided with a plurality of radial flow-through holes 11 along the circumferential direction thereof.

[0037] In this embodiment, for example, the geometric areas of the axial flow-through hole 10, the radial flow-through hole 11 and the flow-through ring groove 12 are all more than 4 times the geometric areas of the axial flow limiting hole 8 and the inclined flow limiting hole 9, which can ensure that the flow resistance is mainly generated at the axial flow limiting hole 8 and the inclined flow limiting hole 9, and no obvious flow resistance is generated at other positions.

[0038] As shown in Figure 1 and 2As shown, according to an embodiment of the present application, the axial through-flow hole 10 is arranged at the central axis of the guide structure 5. The axial flow-limiting hole 8 is arranged at the central axis of the limiting structure 6, and the axial through-flow hole 10 is coaxial with the axial flow-limiting hole 8.

[0039] According to an embodiment of the present application, the plurality of oblique flow-limiting holes 9 are arranged in sequence along the circumferential direction of the outer side surface of the limiting structure 6 in the radial direction thereof.

[0040] In the present embodiment, for example, the plurality of (at least two) oblique flow-limiting holes 9 can be arranged uniformly along the circumferential direction of the outer side surface of the limiting structure 6 in the radial direction thereof.

[0041] On the other hand, as shown in Figs. 1 and 2, Figure 1 and 2 The present application provides a pipe joint, which comprises the first pipe joint 2, the second pipe joint 1 and the throttle ring 4. The inner diameter of the pipe at the abutting position of the second pipe joint 1 is larger than that of the first pipe joint 2, and the inner diameter of the pipe at the abutting position of the second pipe joint 1 is larger than that of the adjacent section. The throttle ring 4 is movable along the axial direction of the second pipe joint 1 inside the second pipe joint 1. When the fluid flows from the second pipe joint 1 to the first pipe joint 2, one end of the throttle ring 4 cooperates with the end surface of the first pipe joint 2 close to the second pipe joint 1. When the fluid flows from the first pipe joint 2 to the second pipe joint 1, the other end of the throttle ring 4 cooperates with the end surface of the second pipe joint 1 close to the first pipe joint 2.

[0042] In the present embodiment, for example, when the working medium flows to the left (from the second pipe joint 2 to the first pipe joint 1), the throttle ring 4 moves to the left first pipe joint 2 and is limited, the working medium flows from the second pipe joint 1 through the axial through-flow hole 10, part of which enters the first pipe joint 1 through the axial flow-limiting hole 8, and the other part flows through the radial through-flow hole 11 and the through-flow ring groove 12, and finally enters the first pipe joint 2 through the oblique limiting hole 9. When the working medium flows to the right (from the first pipe joint 2 to the second pipe joint 1), the throttle ring 4 moves to the right second pipe joint 1 and is limited, the oblique flow-limiting hole 9 is closed, and the working medium can only flow from the first pipe joint 2 through the axial flow-limiting hole 8 and the axial through-flow hole 10 into the second pipe joint 1.

[0043] The pipe joint can realize different flow areas in the forward and reverse directions by arranging the axial flow-limiting hole 8, the axial through-flow hole 10 and the oblique flow-limiting hole 9. For example, by adjusting the areas (flow areas) of the axial flow-limiting hole 8, the axial through-flow hole 10, the oblique flow-limiting hole 9, the radial through-flow hole 11 and the through-flow ring groove 12, the working medium can only produce obvious flow resistance at the axial flow-limiting hole 8 and the oblique flow-limiting hole 9, and the rest positions are all smooth.

[0044] According to one embodiment of the utility model, the first pipe joint 2 is a spherical pipe joint, and the second pipe joint 1 is a conical pipe joint. The outer side of the limiting structure 6 in the radial direction is a conical surface matched with the inner wall of the second pipe joint 1.

[0045] In the embodiment, the throttling ring 4 can reciprocate in a certain range in the conical pipe joint along the flow direction of the working medium. Figure 1 and 2 As shown in the left movement, the limiting structure 6 of the throttling ring 4 is away from the end surface (which can be a plane) of the guide structure 5, and the spherical pipe joint is matched to realize the limiting. When moving to the right, the limiting structure 6 of the throttling ring 4 on the outer side in the radial direction (conical surface) is matched with the conical pipe joint to realize the limiting.

[0046] According to one embodiment of the utility model, in addition to the first pipe joint 2, the second pipe joint 1 and the throttling ring 4, the pipe joint further comprises a sleeve nut 3. The sleeve nut 3 is arranged on the outer side in the radial direction of the butt joint of the first pipe joint 2 and the second pipe joint 1, so as to fixedly connect the first pipe joint 2 and the second pipe joint 1. The oblique flow limiting hole 9 is communicated with the pipe inner diameter of the first pipe joint 2 at the opening end of the end surface of the limiting structure 6 facing the first pipe joint 2.

[0047] In the embodiment, the sleeve nut 3 can lock the first pipe joint 2 and the second pipe joint 1, and form the external sealing.

[0048] The above embodiments of the utility model can be combined with each other, and have corresponding technical effects.

[0049] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A bidirectional two-opening throttle ring, which is arranged at the abutment of a second pipe joint and a first pipe joint, characterized in that, Comprise: A limiting structure and a guiding structure are fixedly connected; the diameter of the end face of the limiting structure away from the guiding structure is greater than the diameter of the end face of the guiding structure away from the limiting structure; The end face of the guiding structure away from the first pipeline joint is provided with an axial flow hole extending to the inside thereof, and the end face of the limiting structure toward the first pipeline joint is provided with an axial flow limiting hole extending to the inside thereof, and the axial flow hole and the axial flow limiting hole are communicated; The limiting structure is provided with a diagonal flow limiting hole extending through the end face of the limiting structure away from the guiding structure on the outer side thereof in the radial direction; When fluid flows from the guiding structure to the limiting structure, the limiting structure abuts against the first pipeline joint; fluid flows from the second pipeline joint through the axial flow hole, the axial flow limiting hole, and the diagonal flow limiting hole into the first pipeline joint; When fluid flows from the limiting structure to the guiding structure, the outer side of the limiting structure in the radial direction abuts against the second pipeline joint, and the diagonal flow limiting hole is closed; fluid flows through the axial flow limiting hole and the axial flow hole into the second pipeline joint.

2. The throttle ring of claim 1, wherein, At least a part of the outer side of the limiting structure in the radial direction is adapted to the side wall of the second pipeline joint at the joint, and the opening of the diagonal flow limiting hole is arranged at the adaptation.

3. The throttle ring of claim 1, wherein, The axial flow hole is provided with a radial flow hole extending through the side wall of the guiding structure near the limiting structure; When fluid flows from the second pipeline joint to the first pipeline joint, fluid flows into the first pipeline joint through the axial flow hole, the radial flow hole, the gap between the limiting structure and the second pipeline joint at the joint, and the diagonal flow limiting hole in sequence.

4. The throttle ring of claim 3, wherein, The guiding structure is provided with a flow ring groove along the circumferential direction thereof on the outer side thereof in the radial direction near the limiting structure, and the radial flow hole is arranged in the flow ring groove.

5. The throttle ring of claim 4, wherein, The flow ring groove is provided with a plurality of radial flow holes along the circumferential direction of the outer side of the limiting structure in the radial direction.

6. The throttle ring of claim 1, wherein, The axial flow hole is arranged at the central axis of the guiding structure, and the axial flow limiting hole is arranged at the central axis of the limiting structure, and the axial flow hole is coaxial with the axial flow limiting hole.

7. The throttle ring of claim 1, wherein, A plurality of diagonal flow limiting holes are arranged in sequence along the circumferential direction of the outer side of the limiting structure in the radial direction.

8. A pipe joint, characterized in that Comprise the first pipeline joint, the second pipeline joint, and the throttle ring according to any one of claims 1-7; the inner diameter of the pipeline at the joint of the second pipeline joint is greater than the inner diameter of the pipeline at the joint of the first pipeline joint, and the inner diameter of the pipeline at the joint of the second pipeline joint is greater than the inner diameter of the pipeline of the adjacent section; The throttle ring can move in the axial direction of the second pipeline joint inside the second pipeline joint, one end of the throttle ring cooperates with the end face of the first pipeline joint near the second pipeline joint when fluid flows from the second pipeline joint to the first pipeline joint, and the other end of the throttle ring is used to cooperate with the end face of the second pipeline joint near the first pipeline joint when fluid flows from the first pipeline joint to the second pipeline joint.

9. The pipe joint of claim 8, wherein, The first pipe joint is a spherical pipe joint, and the second pipe joint is a conical pipe joint; the outer side of the limiting structure in the radial direction is a conical surface matched with the inner wall of the second pipe joint.

10. The pipe joint of claim 8, wherein, Further comprising a sleeve nut; the sleeve nut is arranged on the outer side of the first pipe joint and the second pipe joint in the radial direction at the joint to fix and connect the first pipe joint and the second pipe joint; the oblique flow limiting hole is communicated with the inner diameter of the pipeline of the first pipe joint at the opening end of the end face of the limiting structure facing the first pipe joint.

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