High-pressure self-tightening flange for pipeline

Abstract

The utility model belongs to the technical field of flanges, and particularly relates to a high-pressure self-tightening flange for a pipeline, which comprises two socket joints in butt joint with each other and two clamping sleeves arranged on the outer sides of the two socket joints and used for locking the two socket joints in an embracing manner, convex blocks are integrally formed at the end parts of the two clamping sleeves, mounting holes are formed in the convex blocks, and the two clamping sleeves are arranged in the mounting holes. A screw rod is inserted into the mounting hole between the two convex blocks, and a nut is in threaded connection with the screw rod and abuts against one convex block. According to the high-pressure self-tightening flange, the locking component is arranged between the two protruding blocks, the locking component is composed of the locking rod and the limiting mechanism, the locking rod is connected between the two protruding blocks, the limiting mechanism is used for limiting the nut and the locking rod, limiting protection is carried out on the nut, and the nut is prevented from loosening and falling off, so that the sealing performance of the whole high-pressure self-tightening flange is guaranteed, and the service life of the high-pressure self-tightening flange is prolonged. The problem that at the present stage, a high-pressure self-tightening flange nut is prone to loosening, and consequently the sealing performance of the high-pressure self-tightening flange nut is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically a high-pressure self-tightening flange for pipelines. Background Technology

[0002] High-pressure self-tightening flanges are a new type of high-pressure flange that is more suitable for pipeline connections under harsh conditions such as high pressure, high temperature, and high corrosion. Traditional flanges rely on the plastic deformation of the sealing gasket to achieve a sealing effect, which is a soft seal. The core of high-pressure self-tightening flanges is a unique new type of seal, which relies on the elastic deformation of the sealing lip (T-arm) of the sealing ring to form a seal, which is a hard seal. High-pressure self-tightening flanges usually consist of two mating sleeves and two clamps for clamping and fixing the two sleeves. The ends of the clamps are provided with protrusions, and bolts are installed between the protrusions to achieve the connection and fixation between the clamps. However, the bolt connection method has the following shortcomings. For example, the bolts are prone to loosening under wear, vibration and impact after long-term use. Once the bolts loosen, the clamping effect of the clamps on the sleeves will be affected, which will affect the sealing performance of the entire high-pressure self-tightening flange and its use effect. Therefore, it is necessary to improve it. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a high-pressure self-tightening flange for pipelines. A locking component is installed between two protrusions. This locking component consists of a locking rod and a limiting mechanism. The locking rod connects between the two protrusions, and the limiting mechanism limits the nut and locking rod, protecting the nut and preventing it from loosening and falling off. This ensures the overall sealing performance of the high-pressure self-tightening flange and solves the problem of poor sealing caused by the easy loosening of nuts in current high-pressure self-tightening flanges.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A high-pressure self-tightening flange for pipelines includes two mating sleeves and two clamping sleeves disposed on the outside of the two sleeves and locking the two sleeves together. Each clamping sleeve has an integrally formed protrusion at its end. The protrusion has a mounting hole, and a screw is inserted into the mounting hole between the two protrusions. A nut is threaded onto the screw, and the nut abuts against one of the protrusions. A locking component is provided between two adjacent protrusions for locking and positioning the nut. The locking component includes: a locking rod, which includes a rod body inserted into corresponding holes in the two protrusions; and a limiting mechanism, which includes a strip plate and a protrusion integrally formed at one end of the strip plate. The protrusion has a through hole adapted to the screw, and the strip plate has an insertion hole into which the rod body is inserted.

[0008] Furthermore, a protective cap is fixedly connected to one end of the rod, the protective cap abuts against one of the protrusions, and a locking groove is provided on one side of the rod. A locking plate is rotatably connected to one side of the strip plate, and the locking plate is adapted to the locking groove.

[0009] Furthermore, a screw is threadedly connected between one side of the locking plate and the strip plate.

[0010] Furthermore, the limiting mechanism also includes a pad fixedly connected to one of the protrusions, and a second protrusion is fixedly connected to the end of the strip plate away from the first protrusion, with the second protrusion abutting against the pad.

[0011] Furthermore, a hexagonal nut is fixedly connected to one end of the screw, and the nut is adapted to a hidden groove corresponding to one of the protrusions.

[0012] Furthermore, one end of each of the two sleeves is integrally formed with an annular flange, and a sealing ring is provided at the sealing groove of the two annular flanges. A beveled groove is provided on one side of the annular flange and on the ferrule, and the beveled groove on the ferrule is adapted to the beveled groove on the annular flange.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a high-pressure self-tightening flange for pipelines, which has the following advantages:

[0015] 1. This utility model, by setting a locking component between two adjacent protrusions, consists of a locking rod connected between the two protrusions and a limiting mechanism for limiting and protecting the locking rod and nut. The main body of the locking rod is a rod body, with a locking groove on one side. The rod body is inserted into the insertion hole of the strip plate, and one protrusion at one end of the strip plate abuts against the nut, while another protrusion at the other end of the strip plate abuts against the pad. A locking plate is rotatably connected to one side of the strip plate. After the locking plate rotates, it can close into the locking groove of the rod body, thereby achieving the positioning and fixing of the rod body. In this way, the rod body achieves the positioning and protection effect of the strip plate, and the nut is limited by the strip plate and the protrusion, preventing the nut from loosening after long-term use, thus avoiding the nut from loosening and affecting the sealing performance of the entire high-pressure self-tightening flange. This method can effectively limit and protect the nut of the high-pressure self-tightening flange, thereby ensuring the sealing performance of the entire flange and achieving good results.

[0016] 2. This utility model provides an annular flange on one side of the sleeve, a beveled groove on one side of the annular flange, and a similar beveled groove on the ferrule. The beveled groove on the ferrule matches the beveled groove on the annular flange. When the ferrule locks the sleeve in a clamping manner, the two annular flanges can be brought close together through the relationship of the beveled grooves, thereby ensuring the sealing between the structures. Attached Figure Description

[0017] Figure 1 This is a perspective view of one side of the present invention;

[0018] Figure 2 This is a schematic diagram of the locking component in this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting mechanism in this utility model;

[0020] Figure 4 This is a perspective view of the other side of the present invention;

[0021] Figure 5 This is a cross-sectional view of the present invention.

[0022] In the diagram: 1. Sleeve; 2. Compression sleeve; 3. Protrusion; 4. Screw; 5. Nut; 6. Locking component; 7. Locking rod; 701. Protective cap; 702. Rod body; 703. Locking groove; 8. Limiting mechanism; 801. Strip plate; 802. Insertion hole; 803. Protrusion one; 804. Through hole; 805. Locking plate; 806. Screw; 807. Gasket; 808. Protrusion two; 9. Nut; 10. Annular flange; 11. Beveled groove; 12. Sealing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] like Figure 1 and Figure 4 As shown, an embodiment of this utility model provides a high-pressure self-tightening flange for pipelines, including two sleeves 1 that are mated together, and two clamping sleeves 2 disposed on the outside of the two sleeves 1 and locking the two sleeves 1 in a clamping manner. The ends of the two clamping sleeves 2 are integrally formed with protrusions 3. The protrusions 3 are provided with mounting holes, and a screw 4 is inserted into the mounting hole between the two protrusions 3. A nut 5 is threaded onto the screw 4. The nut 5 abuts against one of the protrusions 3. A locking component 6 is provided between two adjacent protrusions 3 for locking and positioning the nut 5.

[0026] It should be noted that sleeve 1 and ferrule 2 constitute the main body of the high-pressure self-tightening flange. The ferrule 2 is used to lock the two sleeves 1 together. A protrusion 3 is provided at the end of the ferrule 2, and a screw 4 is provided between two adjacent protrusions 3. The screw 4 is used to connect and fix the adjacent protrusions 3, thus fixing the two ferrules 2. A nut 5 is threaded onto the screw 4, and the nut 5 abuts against one of the protrusions 3, thus achieving the locking effect between the protrusions 3. A locking component 6 is provided between the two protrusions 3. The locking component 6 can limit and protect the nut 5, preventing the nut 5 from loosening and falling off, which would affect the sealing performance of the entire high-pressure self-tightening flange.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the locking component 6 includes: a locking rod 7, which includes a rod body 702, which is inserted into the corresponding holes of the two protrusions 3; and a limiting mechanism 8, which includes a strip plate 801 and a protrusion 803 integrally formed on one end of the strip plate 801. The protrusion 803 has a through hole 804 adapted to the screw 4, and the strip plate 801 has an insertion hole 802, into which the rod body 702 is inserted.

[0028] It should be noted that the locking component 6 consists of a locking rod 7 and a limiting mechanism 8. The main body of the locking rod 7 is a rod 702, which is inserted into the holes of the two protrusions 3. The main body of the limiting mechanism 8 is a strip plate 801. A protrusion 803 is provided at one end of the strip plate 801. The protrusion 803 can be inserted into the screw 4 through the through hole 804 and abut against the nut 5. The rod 702 is inserted into the insertion hole 802 of the strip plate 801, thus connecting the rod 702 to the limiting mechanism 8. The rod 702 can be used to position and protect the strip plate 801, thereby limiting and protecting the nut 5 and preventing it from loosening and falling off.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a protective cap 701 is fixedly connected to one end of the rod 702, the protective cap 701 abuts against one of the protrusions 3, and a locking groove 703 is provided on one side of the rod 702. A locking plate 805 is rotatably connected to one side of the strip plate 801, and the locking plate 805 is adapted to the locking groove 703.

[0030] It should be noted that after the rod 702 is inserted into the insertion hole 802 of the strip plate 801, the protrusion 803 abuts against one side of the nut 5, and the locking plate 805 is rotated so that the locking plate 805 closes into the locking groove 703 of the rod 702, thereby positioning and protecting the rod 702, and playing a connecting role between the rod 702 and the strip plate 801, thus achieving the limiting and protection effect of the nut 5.

[0031] like Figure 2 and Figure 3 As shown, in some embodiments, a screw 806 is threaded between one side of the locking plate 805 and the strip plate 801.

[0032] It should be noted that after the locking plate 805 is rotated and closed, a screw 806 is installed between the locking plate 805 and the strip plate 801 to achieve the positioning function of the locking plate 805.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the limiting mechanism 8 further includes a pad 807 fixedly connected to one of the protrusions 3, and a second protrusion 808 is fixedly connected to one end of the strip plate 801 away from the first protrusion 803, the second protrusion 808 abutting against the pad 807.

[0034] It should be noted that one side of the second protrusion 808 abuts against the pad 807, which can ensure the overall balance of the strip plate 801 and ensure the locking and limiting effect of the nut 5.

[0035] like Figure 4 As shown, in some embodiments, a hexagonal nut 9 is fixedly connected to one end of the screw 4, and the nut 9 is adapted to a hidden groove corresponding to one of the protrusions 3.

[0036] It should be noted that by fixing the nut 9 to one end of the screw 4, the nut 9 serves to limit the position of one end of the screw 4. The nut 9 has a hexagonal design and closes into the hidden groove on one side of the protrusion 3. When in use, the screw 4 is inserted into the mounting holes of the two protrusions 3, and the nut 9 is closed into the hidden groove to limit the position of the screw 4, preventing it from rotating, thus facilitating the installation of the nut 5.

[0037] like Figure 5 As shown, in some embodiments, one end of each of the two sleeves 1 is integrally formed with an annular flange 10, and a sealing ring 12 is provided at the sealing groove of the two annular flanges 10. Furthermore, a beveled groove 11 is provided on one side of the annular flange 10 and on the ferrule 2, and the beveled groove 11 on the ferrule 2 is adapted to the beveled groove 11 on the annular flange 10.

[0038] It should be noted that the annular flange 10 achieves a sealing effect between the ends of the sleeve 1. By setting a sealing ring 12 between the two annular flanges 10, leakage is prevented. By opening oblique grooves 11 on one side of the annular flange 10 and on the ferrule 2, the oblique grooves 11 on the ferrule 2 are adapted to the oblique grooves 11 on the annular flange 10. During assembly, the two ferrules 2 are fixed to each other, and the annular flanges 10 are tightly fixed together. When the ferrules 2 are fixed, the oblique grooves 11 can make the two annular flanges 10 fit together tightly, thus ensuring the sealing performance of the high-pressure self-tightening flange.

[0039] The working principle and usage steps of this utility model are as follows: During use, the annular flanges 10 at the ends of the two sleeve sections 1 are joined together. A sealing ring 12 is placed in the sealing groove between the two annular flanges 10 for sealing protection. Then, a retaining sleeve 2 is placed at the annular flange 10 of the sleeve section 1. The two retaining sleeves 2 are tightly fitted to the outer side of the annular flange 10, and the annular flange 10 is secured by the oblique groove 11. When the two retaining sleeves 2 come together, the two annular flanges 10 are tightly fixed. When the retaining sleeves 2 are fixed, a screw 4 is inserted into the mounting hole between the protrusions 3. A nut 9 at one end of the screw 4 closes to the protrusion 3. At the hidden groove, a nut 5 is threaded onto the screw 4. One side of the nut 5 abuts against another protrusion 3 to fix the protrusions 3 together. Then, the two ferrules 2 are fixed together. After that, the through hole 804 of the protrusion 803 is inserted into the screw 4, and one side of the protrusion 803 abuts against the nut 5. Then, the rod body 702 is inserted between the protrusions 3. The protective cap 701 abuts against one of the protrusions 3. The locking plate 805 is rotated so that the locking plate 805 closes into the locking groove 703. A screw 806 is set between the locking plate 805 and the strip plate 801 to lock and fix the locking plate 805.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-pressure self-tightening flange for pipelines, comprising two mating sleeves (1) and two clamping sleeves (2) disposed on the outside of the two sleeves (1) and locking the two sleeves (1) in a clamping manner, characterized in that: Both of the two sleeves (2) have protrusions (3) integrally formed at their ends. Each protrusion (3) has a mounting hole, and a screw (4) is inserted into the mounting hole between the two protrusions (3). A nut (5) is threaded onto the screw (4), and the nut (5) abuts against one of the protrusions (3). A locking component (6) for locking and positioning the nut (5) is provided between two adjacent protrusions (3). The locking component (6) includes: Locking rod (7), the locking rod (7) includes rod body (702), the rod body (702) is inserted into the corresponding holes of the two protrusions (3); The limiting mechanism (8) includes a strip plate (801) and a protrusion (803) integrally formed on one end of the strip plate (801). The protrusion (803) has a through hole (804) adapted to the screw (4), and the strip plate (801) has an insertion hole (802). The rod (702) is inserted into the insertion hole (802).

2. A high-pressure self-tightening flange for pipelines according to claim 1, characterized in that: A protective cap (701) is fixedly connected to one end of the rod (702). The protective cap (701) abuts against one of the protrusions (3). A locking groove (703) is provided on one side of the rod (702). A locking plate (805) is rotatably connected to one side of the strip plate (801). The locking plate (805) is adapted to the locking groove (703).

3. A high-pressure self-tightening flange for pipelines according to claim 2, characterized in that: A screw (806) is threaded between one side of the locking plate (805) and the strip plate (801).

4. A high-pressure self-tightening flange for pipelines according to claim 1, characterized in that: The limiting mechanism (8) also includes a pad (807) fixedly connected to one of the protrusions (3), and a second protrusion (808) is fixedly connected to the end of the strip plate (801) away from the first protrusion (803), and the second protrusion (808) abuts against the pad (807).

5. A high-pressure self-tightening flange for pipelines according to claim 1, characterized in that: One end of the screw (4) is fixedly connected to a hexagonal nut (9), which is adapted to a hidden groove corresponding to one of the protrusions (3).

6. A high-pressure self-tightening flange for pipelines according to claim 1, characterized in that: One end of each of the two sleeves (1) is integrally formed with an annular flange (10), and a sealing ring (12) is provided at the sealing groove of the two annular flanges (10). A beveled groove (11) is provided on one side of the annular flange (10) and on the ferrule (2). The beveled groove (11) on the ferrule (2) is adapted to the beveled groove (11) on the annular flange (10).

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