Non-welding detachable rotating flange

Abstract

The utility model discloses a non-welding detachable rotary flange which comprises a connector arranged at the end of a hose and used for installing the flange and further comprises a limiting assembly, the limiting assembly comprises at least one first limiting piece, at least one limiting groove is formed in the outer wall of the connector, the first limiting piece is located in the limiting groove, and the first limiting piece is located in the limiting groove. The flange is arranged outside the connector in a sleeving mode, and a second limiting piece is selectively arranged on the outer wall of the connector. In order to avoid the situation that a limiting screw mentioned in the prior art is cut off, multiple different implementation modes are provided for limiting the position of the flange in the axial direction, the position of the flange can be limited by optimizing the structure of the limiting assembly, and therefore the arrangement of the limiting screw is omitted; a second limiting piece can also be arranged on the outer wall of the connector, the end, away from the opening of the connector, of the flange can abut against the second limiting piece, and therefore the second limiting piece and the first limiting piece are matched with each other to limit the position of the flange in the axial direction.

Description

Technical Field

[0001] This utility model relates to the field of fracturing hose technology, and more specifically, to a non-welded detachable rotating flange. Background Technology

[0002] Oilfield fracturing hoses are typically connected at the ends using flanges and bolts. After the flange passes through the hose, it is usually connected using... Figure 1 One method involves using split clamps and limiting screws on the joint to limit the axial position of the flange. Patent CN202410327290 also utilizes this prior art to solve the problem of axial flange limiting; however, this implementation method presents significant problems and safety hazards during use.

[0003] Based on feedback from US customers and analysis of an accident at CNPC Western Drilling, we found that the limiting screw located behind the flange was cut off by the flange. After the screw was cut off, the flange moved backward, flattening the cut end and making it impossible to remove the broken screw for subsequent repairs. Furthermore, the internal split clamps could also detach after the flange moved backward, potentially injuring workers and causing accidents. Therefore, how to prevent the limiting screw from being cut off, or how to eliminate the limiting screw design without affecting the flange's position, is the technical problem this invention aims to solve. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a non-welded detachable rotating flange, comprising: a connector disposed at the end of a flexible hose for mounting the flange, and a limiting component, the limiting component including at least one first limiting member, the connector being a tubular structure with an outer diameter of r, the outer wall of the connector being provided with at least one limiting groove, the first limiting member being located within the limiting groove, the flange being sleeved on the outside of the connector and connected to the first limiting member, the outer wall of the connector being selectively provided with a second limiting member, and the end of the flange away from the connector opening selectively abutting against the second limiting member.

[0006] Preferably, the first limiting member is an arc-shaped structure, and there are at least two first limiting members. The first limiting members are connected end to end to form a limiting ring with a radius of Rx. The first limiting member is used to limit the position of the flange.

[0007] Preferably, the center hole of the flange is composed of a first hole with an inner diameter of R and a second hole with an inner diameter of Rf. The first hole and the second hole are connected, and Rf > R ≥ r. The connection between the first hole and the second hole forms an abutment surface that abuts against the first limiting member.

[0008] Preferably, the first limiting member includes an inner arc surface that abuts against the inner bottom wall of the limiting groove, a first surface that abuts against the abutting surface, and a second and third surface that abut against the two inner side walls of the limiting groove. The second and third surfaces are located on both sides of the inner arc surface, and the second surface is connected to the first surface.

[0009] Preferably, the outer wall of the connector is provided with at least two threaded holes, two adjacent threaded holes are equally spaced, the number of second limiting members is adapted to the number of threaded holes, and the second limiting members are threadedly connected to the threaded holes.

[0010] Preferably, the outer wall of the connector is provided with external threads, and the second limiting member is a ring structure provided with internal threads, and the second limiting member is threadedly connected to the connector.

[0011] Preferably, the first limiting member further includes a fourth surface, the third surface and the fourth surface are located on the same side and connected to each other, and the fourth surface is located between the inner wall of the second hole and the outer wall of the connector.

[0012] Preferably, the limiting component further includes at least one arc-shaped first connector, the first connector being located between the inner wall of the second hole and the outer wall of the connector, the fourth surface of the first limiting component being provided with at least two threaded holes, the threaded holes being located at both ends of the first limiting component, the first connector being provided with at least two first through holes along the axial direction, the screw passing through the first through holes of the first connector and connecting with the threaded holes, and two adjacent first limiting components being connected through the first connector.

[0013] Preferably, the limiting component further includes an annular second connector, the second connector having at least two second through holes along the axial direction, and the first limiting component having at least one threaded hole on its fourth surface. The number and position of the second through holes are adapted to the number and position of the threaded holes on the fourth surface, and a screw passes through the second through holes of the second connector and connects with the threaded holes on the fourth surface.

[0014] Preferably, the limiting component further includes an annular third connector, the inner wall of the second hole is provided with an internal thread, the outer wall of the third connector is provided with an external thread, the outer wall of the third connector is threadedly connected to the inner wall of the second hole, and the fourth surface selectively abuts against the end face of the third connector.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] To avoid the situation where the limiting screw is cut off as mentioned in the prior art, we provide several different implementation methods to limit the axial position of the flange. One method is to optimize the structure of the limiting component to limit the position of the flange, thereby eliminating the need for the limiting screw. Another method is to provide a second limiting member on the outer wall of the joint, so that the end of the flange away from the joint opening can abut against the second limiting member, thereby allowing the second limiting member to cooperate with the first limiting member to limit the axial position of the flange.

[0017] The non-welded detachable rotating flange of this utility model, other advantages, objectives and features of this utility model will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this utility model. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a cross-sectional view of the prior art.

[0020] Figure 2 This is an exploded cross-sectional view of the second limiting member using the first embodiment.

[0021] Figure 3 Cross-sectional views of two different embodiments of the second limiting member.

[0022] Figure 4 This is a structural schematic diagram of the first connecting member and the first limiting member.

[0023] Figure 5 This is a cross-sectional structural diagram of the first connecting member and the first limiting member.

[0024] Figure 6 This is a structural diagram of the second connector and the first limiting member.

[0025] Figure 7 This is a cross-sectional structural diagram of the second connector and the first limiting member.

[0026] Figure 8 for Figure 7 Sectional view at point C.

[0027] Figure 9 This is an exploded view of the new invention when a third connector is used.

[0028] Figure 10 This is an exploded cross-sectional view of the structure when the third connector is used in this new invention.

[0029] Figure 11 This is a cross-sectional view of the first connector (shown in D), the second connector (shown in E), and the third connector (shown in F) of this invention.

[0030] In the diagram: 100 split clamp, 200 limit screw, 1 connector, 2 flange, 3 first limit piece, 30 inner arc surface, 31 first surface, 32 second surface, 33 third surface, 34 fourth surface, 4 limit groove, 5 second limit piece, 6 abutment surface, 7 first connector, 8 second connector, 9 third connector. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0032] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0033] like Figures 1-11 As shown, this utility model provides a non-welded detachable rotating flange, including a connector 1 disposed at the end of a flexible hose for installing a flange 2, and a limiting assembly. The limiting assembly includes at least one first limiting member 3. The connector 1 is a tubular structure with an outer diameter of r. The outer wall of the connector 1 is provided with at least one limiting groove 4. The first limiting member 3 is located in the limiting groove 4. The limiting groove 4 is usually arranged along the circumference of the outer wall of the connector 1, forming a closed annular groove, such as... Figure 9As shown. The limiting groove 4 can also be a non-closed arc-shaped groove set along the circumference of the outer wall of the joint 1. In this case, multiple limiting grooves 4 need to be set and evenly distributed along the circumferential direction on the outer wall of the joint 1 to disperse the force of the flange 2 on the first limiting member 1, making the force more balanced and avoiding damage to the first limiting member 3 or the flange 2. The shape of the first limiting member 3 is adapted to the limiting groove 4, so that the first limiting member 3 can be placed in the limiting groove 4 or clamp the flange 2. When installing this new type, firstly, the flange 2 is sleeved on the outside of the joint 1, so that the limiting groove 4 is located between the flange 2 and the opening of the joint 1. Then, the first limiting member 3 is installed in the limiting groove 4. After that, the flange 2 is moved towards the opening of the joint 1, so that the first limiting member 3 is clamped with the inside of the flange 2, thereby limiting the axial position of the flange 2. To avoid the situation mentioned in the prior art where the limiting screw is cut off, we provide several different implementation methods to limit the axial position of the flange 2. One method is to optimize the structure of the limiting component to limit the position of the flange 2, thereby eliminating the need for the limiting screw. Another method is to provide a second limiting member 5 on the outer wall of the joint 1, so that the end of the flange 2 away from the opening of the joint 1 can abut against the second limiting member 5, thereby allowing the second limiting member 5 and the first limiting member 3 to cooperate with each other to limit the axial position of the flange 2.

[0034] The first limiting member 3 has an arc-shaped structure, and there are at least two first limiting members 3. The first limiting members 3 are connected end to end to form a limiting ring with a radius of Rx. The first limiting member 3 is used to limit the position of the flange 2. The center hole of the flange 2 is formed by a first hole with an inner diameter of R and a second hole with an inner diameter of Rf. The first hole and the second hole are connected, and Rf>R≥r. The connection between the first hole and the second hole forms an abutting surface 6 that abuts against the first limiting member 3. The first limiting member 3 includes an inner arc surface 30 that abuts against the inner bottom wall of the limiting groove 4, a first surface 31 that abuts against the abutting surface 6, and a second surface 32 and a third surface 33 that abut against the two inner side walls of the limiting groove 4. The second surface 32 and the third surface 33 are respectively located on both sides of the inner arc surface 30. The second surface 32 is connected to the first surface 31.

[0035] As one of many embodiments that limit the axial position of flange 2 solely by first limiting member 3 without setting second limiting member 5, the outer wall of first limiting member 3 can be threaded, so that the limiting ring formed by splicing first limiting member 3 end to end has external threads. In this case, internal threads need to be set on the inner wall of the second hole. In this embodiment, because it is necessary to take into account the rotation of flange 2 and the threaded connection between the limiting ring and flange 2, an elastic sealing gasket needs to be set on the inner arc surface 30 of first limiting member 3, so that the outer wall of the limiting ring can abut against the inner wall of the second hole, thereby realizing the threaded connection between the limiting ring and the second hole. At the same time, the limiting groove 4 must be as follows. Figure 9The annular groove shown is necessary; otherwise, flange 2 cannot rotate. This is because when the limiting ring is tightened onto flange 2, flange 2 rotates along with the limiting ring, and the sealing gasket acts as a friction pair. This embodiment also eliminates the need for the limiting screw, relying solely on the first limiting member 3 to limit the axial position of flange 2 without affecting its rotation. Although this embodiment is not the optimal solution to the technical problem of this invention, this embodiment and similar embodiments should not be excluded from the scope of protection.

[0036] The first limiting member 3 also includes a fourth surface 34. The third surface 33 and the fourth surface 34 are located on the same side and are connected. The fourth surface 34 is located between the inner wall of the second hole and the outer wall of the connector 1. The fourth surface 34 can be located on the same plane as the third surface 33, or it can extend towards the opening direction of the connector 1, such as... Figure 5 As shown, it can also have a non-zero angle with the third face 33, such as Figure 5 As shown. The second surface 32 and the third surface 33 are mainly used to limit the axial position of the first limiting member 3 within the limiting groove 4, preventing the first limiting member 3 from displacing axially. After the first limiting member 3 is installed, when the flange 2 moves towards the joint 1, the first surface 31 will abut against the abutment surface 6, thereby limiting the position of the flange axially. Because the flange 2 needs to be able to rotate, the outer diameter Rx of the limiting ring formed by the first limiting member 3 is ≤ Rf.

[0037] In this new invention, when setting the second limiting member 5, we provide two different implementation methods.

[0038] Firstly, the outer wall of the connector 1 is provided with at least two threaded holes, with adjacent threaded holes being equally spaced. The number of second limiting members 5 is adapted to the number of threaded holes, and the second limiting members 5 are threadedly connected to the threaded holes, such as... Figure 2 and Figure 3 As shown in A in the figure. This embodiment still uses screw limiting to limit the axial position of flange 2. Compared with the single screw in the prior art, the present invention increases the number of screws and arranges them evenly along the circumference on the outer wall of joint 1, so that the force is more even and distributed when flange 2 contacts the second limiting member 5, thereby effectively reducing the risk of screws being cut off.

[0039] Secondly, the outer wall of the connector 1 is provided with external threads, and the second limiting member 5 is a ring-shaped structure provided with internal threads. The second limiting member 5 is threadedly connected to the connector 1, such as... Figure 3As shown in B. Borrowing from the idea of ​​threading the outer wall of the limiting ring, an external thread is provided on the outer wall of the connector 1. The position of the flange 2 is limited by the annular second limiting member 5. It is important to note that during installation, the second limiting member 5 must be installed first, screwed to the position furthest from the opening of the connector 1. Then, the flange 2 is placed on the connector 1, with the limiting groove 4 exposed outside the flange 2. After installing the first limiting member 3, the flange 2 is pushed until it abuts against the first limiting member 3, and the second limiting member 5 is rotated until it abuts against the flange 2. When it is necessary to rotate the flange 2, the second limiting member 5 must first be rotated to separate from the flange 2. After the flange 2 is adjusted, the second limiting member 5 is then tightened.

[0040] In both of the aforementioned embodiments, the position of the flange 2 is limited by setting a second limiting member 5. The advantage is that structural modifications can be made directly based on existing technology, such as adding a threaded hole to the joint 1 or setting an external thread on the joint 1, without rendering previously manufactured products unusable. However, the aforementioned embodiments also have drawbacks, such as:

[0041] Firstly, the increased number of screws makes disassembly and maintenance very troublesome, and the screws are exposed on the outside of flange 2, making them prone to contamination.

[0042] Secondly, because of the use of threaded connection, there may be situations where the second limiting part 5 becomes loose, stuck, or rusted.

[0043] Therefore, in order to avoid designing a limiting structure outside flange 2, we provide three other implementation methods.

[0044] In this embodiment, the limiting assembly further includes at least one arc-shaped first connecting member 7, which is located between the inner wall of the second hole and the outer wall of the connector 1. At least two threaded holes are provided on the fourth surface 34 of the first limiting member 3, located at both ends of the first limiting member 3. The first connecting member 7 has at least two first through holes along the axial direction. Screws pass through the first through holes of the first connecting member 7 and connect to the threaded holes. Two adjacent first limiting members 3 are connected through the first connecting member 7. Figure 4 , Figure 5 and Figure 11 As shown in Figure D, the first connecting piece 7 can connect the first limiting piece 3 into a whole, so that when the flange 2 is separated from the first limiting piece 3, the first limiting piece 3 will not fall off the joint 1, thus preventing injury. At the same time, the first connecting piece 7 is located at the joint of the two first limiting pieces 3, so a gap can be left between the ends of the two first limiting pieces 3, allowing the first limiting piece 3 to be prefabricated modularly. Since it is only subjected to axial force, it only needs to be connected into a whole by the first connecting piece 7 and locked in the limiting groove 4 without falling off.

[0045] Correspondingly, a locking block can also be set on the first connector 7, and an L-shaped locking groove can be set on the inner wall of the second hole. The two grooves are respectively set along the axial and circumferential directions of the second hole. In this way, when installing the first connector 7, the locking block is first inserted into the locking groove from the opening of the second hole, and then the first connector 7 is moved axially towards the first hole. After the first connector 7 abuts against the fourth surface 34, the first connector 7 is rotated so that the locking block is rotated into the groove along the circumferential direction, thereby realizing the bidirectional axial position limitation of the flange 2 through the first connector 7 and the first limiting member 3.

[0046] In this embodiment, the limiting component further includes an annular second connector 8. The second connector 8 has at least two second through holes along the axial direction. The fourth surface 34 of the first limiting component 3 has at least one threaded hole. The number and position of the second through holes correspond to the number and position of the threaded holes on the fourth surface 34. A screw passes through the second through holes of the second connector 8 and connects with the threaded holes of the fourth surface 34. Compared to the multiple first connectors 7 in the previous embodiment, this embodiment only requires one second connector 8 and provides multiple threaded holes on the fourth surface 34 of the first limiting component 3 to increase the firmness of the connection between the second connector 8 and the first limiting component 3, thereby increasing the radial force on the first limiting component 3.

[0047] In this embodiment, the limiting component further includes an annular third connector 9. The inner wall of the second hole is provided with an internal thread, and the outer wall of the third connector 9 is provided with an external thread. The outer wall of the third connector 9 is threadedly connected to the inner wall of the second hole, and the fourth surface 34 selectively abuts against the end face of the third connector 9. In this embodiment, the third connector 9 is connected to the flange 2 as a whole through a threaded connection. Because it is no longer necessary to fix it to the first limiting component 3, the inner diameter of the third connector 9 can be greater than r and less than Rx. Figure 11 As shown in F, this reduces the friction between flange 2 and the joint when flange 2 rotates, making flange 2 rotation easier and less strenuous.

[0048] All three implementation methods described above employ a structural design that encapsulates the connector within the flange 2. Whether using screw or threaded connection, this effectively prevents the external environment from affecting the connector, thereby avoiding contamination and rust.

[0049] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 utility model 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 utility model.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, an electrical connection, or a connection that allows communication between them; 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 utility model according to the specific circumstances.

[0051] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A non-welded, detachable rotating flange, comprising: A connector (1) for mounting a flange (2) at the end of a hose is characterized in that it further includes a limiting component, the limiting component including at least one first limiting member (3), the connector (1) is a tubular structure with an outer diameter of r, the outer wall of the connector (1) is provided with at least one limiting groove (4), the first limiting member (3) is located in the limiting groove (4), the flange (2) is sleeved on the outside of the connector (1) and connected to the first limiting member (3), the outer wall of the connector (1) is selectively provided with a second limiting member (5), and the end of the flange (2) away from the opening of the connector (1) selectively abuts against the second limiting member (5).

2. The non-welded detachable rotating flange according to claim 1, characterized in that, The first limiting member (3) has an arc-shaped structure, and there are at least two first limiting members (3). The first limiting members (3) are connected end to end to form a limiting ring with a radius of Rx. The first limiting member (3) is used to limit the position of the flange (2).

3. The non-welded detachable rotating flange according to claim 2, characterized in that, The center hole of the flange (2) is formed by a first hole with an inner diameter of R and a second hole with an inner diameter of Rf. The first hole and the second hole are connected, and Rf>R≥r. The connection between the first hole and the second hole forms an abutment surface (6) that abuts against the first limiting member (3).

4. The non-welded detachable rotating flange according to claim 3, characterized in that, The first limiting member (3) includes an inner arc surface (30) that abuts against the inner bottom wall of the limiting groove (4), a first surface (31) that abuts against the abutting surface (6), a second surface (32) and a third surface (33) that abut against the two inner side walls of the limiting groove (4). The second surface (32) and the third surface (33) are located on both sides of the inner arc surface (30), and the second surface (32) is connected to the first surface (31).

5. The non-welded detachable rotating flange according to claim 1, characterized in that, The outer wall of the connector (1) is provided with at least two threaded holes, and two adjacent threaded holes are equally spaced. The number of second limiting members (5) is adapted to the number of threaded holes, and the second limiting members (5) are threadedly connected to the threaded holes.

6. The non-welded detachable rotating flange according to claim 1, characterized in that, The outer wall of the connector (1) is provided with an external thread, and the second limiting member (5) is a ring structure provided with an internal thread. The second limiting member (5) is threadedly connected to the connector (1).

7. The non-welded detachable rotating flange according to claim 4, characterized in that, The first limiting member (3) also includes a fourth surface (34), the third surface (33) and the fourth surface (34) are located on the same side, and the third surface (33) and the fourth surface (34) are connected. The fourth surface (34) is located between the inner wall of the second hole and the outer wall of the connector (1).

8. The non-welded detachable rotating flange according to claim 7, characterized in that, The limiting component also includes at least one arc-shaped first connector (7), which is located between the inner wall of the second hole and the outer wall of the connector (1). At least two threaded holes are provided on the fourth surface (34) of the first limiting component (3), which are located at both ends of the first limiting component (3). The first connecting component (7) is provided with at least two first through holes along the axial direction. Screws pass through the first through holes of the first connecting component (7) and connect with the threaded holes. Two adjacent first limiting components (3) are connected through the first connecting component (7).

9. The non-welded detachable rotating flange according to claim 7, characterized in that, The limiting component also includes an annular second connector (8), which has at least two second through holes along the axial direction. The fourth surface (34) of the first limiting component (3) has at least one threaded hole. The number and position of the second through holes are adapted to the number and position of the threaded holes on the fourth surface (34). The screw passes through the second through hole of the second connector (8) and connects with the threaded hole of the fourth surface (34).

10. The non-welded detachable rotating flange according to claim 7, characterized in that, The limiting component also includes an annular third connector (9), the inner wall of the second hole is provided with an internal thread, the outer wall of the third connector (9) is provided with an external thread, the outer wall of the third connector (9) is threadedly connected to the inner wall of the second hole, and the fourth surface (34) selectively abuts against the end face of the third connector (9).

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