Pressure-relief type leak stopper

Abstract

The utility model relates to pipeline, especially is leak stoppage fixture of pressure relief formula. Including semicircular fixed fixture and normal pressure surface fixture, the adjacent end of fixed fixture and normal pressure surface fixture all is equipped with radial convex part, two convex parts are screwed, normal pressure surface fixture is located pipeline's leak point side, fixed fixture is located pipeline's leak point back, normal pressure surface fixture is equipped with pressure relief hole and installs pressure relief valve at outer end, and pressure relief hole is opposite pipeline's leak point, the both ends of fixed fixture and normal pressure surface fixture inner wall symmetry are equipped with ring groove, the inner end of fixed fixture and normal pressure surface fixture convex part all are equipped with axial long hole, and long hole communicates with ring groove, and normal pressure surface fixture is equipped with glue injection hole. Solve the situation that the fixture displacement, sealing glue external leakage caused by the pressure concentration in the fixture inside when plugging, make the process of leak stoppage under pressure easier, reduce leak stoppage time, reduce the waste of leak stoppage glue, the rear end of pressure relief valve can connect other pipeline device, can quickly lead out the medium in the leaky pipeline.

Description

Technical Field

[0001] This utility model relates to pipelines, and in particular to a pressure-relieving leak-sealing clamp. Background Technology

[0002] During operation, process pipelines may experience leaks, causing the transported medium to leak out under pressure. When repairing pipeline leaks, leak-sealing clamps are used. However, during installation, the medium pressure concentrates inside the clamps, leading to clamp displacement, sealant leakage, and ineffective sealing of the leak. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problems, thereby providing a pressure-relief leak-sealing clamp to solve the problem of clamp displacement and sealant leakage caused by pressure concentration inside the clamp during leak sealing.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A pressure-relieving leak-sealing clamp includes a semi-circular fixing clamp and a positive pressure clamp. Both the fixing clamp and the positive pressure clamp have radial protrusions at adjacent ends, and the two protrusions are screwed together. The positive pressure clamp is located on one side of the leak point of the pipeline, and the fixing clamp is located on the back of the leak point of the pipeline. The positive pressure clamp has a pressure relief hole and a pressure relief valve is installed on the outer port. The pressure relief hole is directly opposite the leak point of the pipeline. The inner walls of the fixing clamp and the positive pressure surface clamp are symmetrically provided with annular grooves at both ends. The inner ends of the protrusions of the fixing clamp and the positive pressure surface clamp are provided with axial elongated holes, which are connected to the annular grooves. The positive pressure surface clamp is provided with an injection hole.

[0005] Compared with the prior art, the present invention, which adopts the above technical solution, has the following beneficial effects: The fixing clamp is a semi-enclosed clamp with an annular seal. It is installed on the back pressure surface of the leak point to fix it. The inner surface of the fixing clamp has a semi-annular groove at the contact part with the leaking pipe, and sealant is injected through the injection hole. The positive pressure clamp has an annular groove and a switchable pressure relief valve. The positive pressure clamp is installed on the leaking surface, with the pressure relief valve positioned directly opposite the leak point. When sealing a leak under pressure, opening the pressure relief valve releases the pressure accumulated inside the clamp assembly, allowing the sealing adhesive to quickly fill the annular groove and preventing the sealant from being compressed, diluted, or gelled. Pressure relief plugging clamps effectively solve the problems of clamp displacement and sealant leakage caused by pressure concentration inside the clamp during plugging. They make the pressurized plugging process easier, reduce plugging time, and reduce waste of plugging sealant. The rear end of the pressure relief valve can be connected to other pipeline devices to quickly discharge the medium inside the leaking pipeline, which is beneficial to production operations.

[0006] Furthermore, the optimized solution of this utility model is: There are multiple injection holes.

[0007] The injection holes are connected to the long groove and the annular groove respectively. After injection, the long groove and the annular groove are filled with sealant.

[0008] It also includes a quick-clamping mechanism, which comprises a first clamping sleeve, a second clamping sleeve, a pull rod, a guide sleeve, a support plate, a fixed sleeve, a screw, and a wedge. The first clamping sleeve and the second clamping sleeve are respectively fixed to the two ends of the fixed clamp and the positive pressure surface clamp. The fixed clamp is symmetrically provided with tangential pull rods, and the positive pressure surface clamp is symmetrically provided with guide sleeves that slide with the pull rods. One end of the second clamping sleeve of the pull rod has an elongated groove. A support plate perpendicular to the pull rod is fixedly connected to the outside of the second clamping sleeve, and a fixed sleeve is fixedly connected to the outside of the support plate. A screw is rotatably installed inside the fixed sleeve, and a nut is installed on the screw. A wedge is installed on the nut, and the wedge engages with the elongated groove of the pull rod.

[0009] The inner ends of the first and second clamping sleeves are respectively provided with flange structures, and the two flange structures are respectively screwed to the fixing clamp and the positive pressure surface clamp.

[0010] The tie rod is L-shaped, and its cross-section is rectangular.

[0011] The guide sleeve is fixedly connected to the second clamping sleeve via the first connecting plate; the support plate is fixedly connected to the second clamping sleeve via the second connecting plate.

[0012] The fixing sleeve is fixed to the support plate through the third connecting plate, and the screws at both ends of the fixing sleeve are respectively provided with limiting rings.

[0013] The nut is fixed by a T-shaped guide rod, and the support plate has a T-shaped groove, with the guide rod slidably connected to the groove. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation of the fixing clamp and the positive pressure surface clamp according to Embodiment 1 of this utility model; Figure 2 for Figure 1 The left view; Figure 3 This is an isometric view of the fixing clamp according to Embodiment 1 of this utility model; Figure 4 This is an isometric view of the positive pressure surface fixture of Embodiment 1 of this utility model; Figure 5 This is a schematic diagram showing the installation of the fixing clamp, positive pressure surface clamp, and quick clamping mechanism in Embodiment 2 of this utility model; Figure 6 for Figure 5 The left view; Figure 7This is a front view of the rapid clamping mechanism according to Embodiment 2 of this utility model; Figure 8 for Figure 7 The left view; Figure 9 This is a schematic diagram showing the connection of the nut, guide rod, and support plate in Embodiment 2 of this utility model.

[0015] In the figure: 1. Fixing clamp; 101. Protrusion; 102. Ring groove; 103. Long groove; 2. Positive pressure surface clamp; 201. Pressure relief valve; 202. Injection hole; 3. First clamping sleeve; 301. Flange structure; 4. Second clamping sleeve; 5. Pull rod; 6. Guide sleeve; 601. First connecting plate; 7. Support plate; 701. Second connecting plate; 8. Fixing sleeve; 801. Third connecting plate; 9. Screw; 901. Limiting ring; 902. Turn handle; 10. Nut; 1001. Fourth connecting plate; 11. Wedge; 12. Guide rod; 13. Pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1:

[0018] See Figures 1-4 This embodiment provides a pressure-relieving leak-sealing clamp, mainly composed of a fixing clamp 1 and a positive pressure surface clamp 2. Both the fixing clamp 1 and the positive pressure surface clamp 2 have semi-circular cross-sections, forming a circle. Adjacent ends of the fixing clamp 1 and the positive pressure surface clamp 2 are provided with radial protrusions 101, each with mounting holes. The protrusions 101 of the fixing clamp 1 and the positive pressure surface clamp 2 are connected by bolts.

[0019] Both ends of the inner walls of the fixing clamp 1 and the positive pressure clamp 2 are symmetrically provided with annular grooves 102, which are semi-annular. The inner ends of the protrusions 101 of both the fixing clamp 1 and the positive pressure clamp 2 are provided with axial elongated grooves 103, which communicate with the annular grooves 102. Both the fixing clamp 1 and the positive pressure clamp 2 have glue injection holes 202 in their annular grooves 102, which penetrate the positive pressure clamp 2. The elongated grooves 103 of the positive pressure clamp 2 have multiple glue injection holes 104. The positive pressure clamp 2 has a pressure relief hole, and a pressure relief valve 201 is installed at the outer port of the pressure relief hole.

[0020] When sealing the leak in pipe 13, the positive pressure clamp 2 is installed on the leaking surface, and the pressure relief valve 201 is positioned directly opposite the leak point. The pressure relief valve 201 is opened, and the fixing clamp 1 is installed on the back pressure surface of the leak point. The protrusions 101 of the fixing clamp 1 and the positive pressure clamp 2 are connected by bolts. After the fixing clamp 1 and the positive pressure clamp 2 are fixed, sealing adhesive is injected into the annular groove 102 and the long groove 103 through the injection hole 104 using a glue gun. The sealant quickly fills the annular groove 102 and the long groove 103. The pressure relief valve 201 is in the open state, releasing the pressure accumulated inside the clamp assembly and preventing the sealant from leaking out due to pressure. After the sealant has completely filled the annular groove 102 and the long groove 103 and achieved the sealing requirements, the pressure relief valve 201 is closed, completing the leak sealing process.

[0021] Implementation: 2:

[0022] See Figures 5-9 This embodiment adds a quick-pressing mechanism based on Embodiment 1. The quick-pressing mechanism mainly consists of a first pressing sleeve 3, a second pressing sleeve 4, a pull rod 5, a guide sleeve 6, a support plate 7, a fixing sleeve 8, a screw 9, a nut 10, and a wedge 11. The cross-section of the first pressing sleeve 3 and the second pressing sleeve 4 is semi-circular. The inner ends of the first pressing sleeve 3 and the second pressing sleeve 4 are respectively provided with flange structures 301. The two flange structures 301 are respectively bolted to the end faces of the fixing clamp 1 and the positive pressure surface clamp 2.

[0023] The first clamping sleeve 3 is symmetrically welded with tangential pull rods 5. The pull rods 5 are L-shaped with a rectangular cross-section. The second clamping sleeve 4 is symmetrically provided with guide sleeves 6. The guide sleeves 6 are welded to the second clamping sleeve 4 through a first connecting plate 601. The guide sleeves 6 have rectangular holes through which the pull rods 5 pass and slide with the guide sleeves 6. One end of the pull rod 5 in the second clamping sleeve 4 has an elongated hole. A support plate 7 perpendicular to the pull rod 5 is provided on the outer side of the second clamping sleeve 4. The support plate 7 is tangentially arranged and is welded to the second clamping sleeve 4 through a second connecting plate 701. A fixing sleeve 8 is provided on the outer side of the support plate 7. The fixing sleeve 8 is welded to the support plate 7 through a third connecting plate 801.

[0024] A screw 9 is rotatably mounted inside the fixed sleeve 8. Limit rings 901 are welded to both ends of the screw 9 at both ends of the fixed sleeve 8, and a handle 902 is welded to one end of the screw 9. Two nuts 10 are symmetrically mounted on the screw 9. The nuts 10 are welded to a wedge 11 via a fourth connecting plate 1001. The wedge 11 mates with the elongated hole of the pull rod 5. A T-shaped guide rod 12 is welded to the screw 9. A T-shaped groove is provided on the support plate 7, and the guide rod 12 is slidably connected to this groove.

[0025] The usage process of this embodiment is as follows: First, the first clamping sleeve 3 and the second clamping sleeve 4 are connected to the fixing clamp 1 and the positive pressure surface clamp 2 respectively by bolts. The pressure relief valve 201 of the positive pressure surface clamp 2 is facing the leak point. The fixing clamp 1 and the second clamping sleeve 4 are placed on the back of the leak point. The pull rod 5 is inserted into the guide sleeve 6, and the wedge 11 is aligned with the long groove of the pull rod 5. The screw 9 is rotated, and the two nuts 10 move away. The wedge 11 enters the long hole of the pull rod 5. The screw 9 is rotated again, and the wedge 11 engages with the long hole of the pull rod 5, tightening the first clamping sleeve 3 and the second clamping sleeve 4. Then, the fixing clamp 1 and the positive pressure surface clamp 2 are quickly tightened and fastened. Then, the bolt of the protrusion 101 is installed. Finally, sealant is injected. After sealing the leak, the quick-clamping mechanism is disassembled and can be reused. This embodiment is used in situations where the excavation surface of underground pipelines is small and it is inconvenient for multiple people to maintain it. One person can operate it, improving the efficiency of pipeline leak sealing.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pressure-relieving leak-sealing clamp, comprising a semi-circular fixing clamp and a positive pressure surface clamp, wherein adjacent ends of the fixing clamp and the positive pressure surface clamp are provided with radial protrusions, and the two protrusions are screwed together, characterized in that: The positive pressure clamp is located on one side of the leak point of the pipeline, and the fixing clamp is located on the back of the leak point of the pipeline. The positive pressure clamp has a pressure relief hole and a pressure relief valve is installed on the outer port. The pressure relief hole is directly opposite the leak point of the pipeline. The inner walls of the fixing clamp and the positive pressure surface clamp are symmetrically provided with annular grooves at both ends. The inner ends of the protrusions of the fixing clamp and the positive pressure surface clamp are provided with axial long grooves, which are connected to the annular grooves. The positive pressure surface clamp is provided with an injection hole.

2. The pressure-relief leak-sealing clamp according to claim 1, characterized in that: There are multiple injection holes.

3. The pressure-relief leak-sealing clamp according to claim 2, characterized in that: The injection holes are connected to the long groove and the annular groove respectively. After injection, the long groove and the annular groove are filled with sealant.

4. The pressure-relief leak-sealing clamp according to claim 1, characterized in that: It also includes a quick-clamping mechanism, which comprises a first clamping sleeve, a second clamping sleeve, a pull rod, a guide sleeve, a support plate, a fixed sleeve, a screw, and a wedge. The first clamping sleeve and the second clamping sleeve are respectively fixed to the two ends of the fixed clamp and the positive pressure surface clamp. The fixed clamp is symmetrically provided with tangential pull rods, and the positive pressure surface clamp is symmetrically provided with guide sleeves that slide with the pull rods. One end of the second clamping sleeve of the pull rod has an elongated hole. A support plate perpendicular to the pull rod is fixedly connected to the outside of the second clamping sleeve, and a fixed sleeve is fixedly connected to the outside of the support plate. A screw is rotatably installed inside the fixed sleeve, and a nut is installed on the screw. A wedge is installed on the nut, and the wedge engages with the elongated hole of the pull rod.

5. The pressure-relief leak-sealing clamp according to claim 4, characterized in that: The inner ends of the first and second clamping sleeves are respectively provided with flange structures, and the two flange structures are respectively screwed to the fixing clamp and the positive pressure surface clamp.

6. The pressure-relief leak-sealing clamp according to claim 4, characterized in that: The tie rod is L-shaped, and its cross-section is rectangular.

7. The pressure-relief leak-sealing clamp according to claim 4, characterized in that: The guide sleeve is fixedly connected to the second clamping sleeve via the first connecting plate; the support plate is fixedly connected to the second clamping sleeve via the second connecting plate.

8. The pressure-relief leak-sealing clamp according to claim 4, characterized in that: The fixing sleeve is fixed to the support plate through the third connecting plate, and the screws at both ends of the fixing sleeve are respectively provided with limiting rings.

9. The pressure-relief leak-sealing clamp according to claim 4, characterized in that: The nut is fixed by a T-shaped guide rod, and the support plate has a T-shaped groove, with the guide rod slidably connected to the groove.

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