Tool for pipe plugging and pressure testing

Abstract

The utility model provides a tool for pipe plugging and pressure testing, which comprises an end cover, a boss, a conical sliding block, a sealing ring, a bottom plate, a water inlet pipe, a nut and a bolt, the end cover, the boss and the bottom plate are connected through the nut and the bolt, and the bolt penetrates through the lower end of the end cover and the lower end of the boss from top to bottom and is connected with the bottom plate. The nut is connected to the upper end of the bolt and is in contact connection with the upper surface of the end cover; the lower portion of the end cover is clamped to a pipe opening, the boss and the bottom plate are arranged in the pipe, a space is formed between the outer wall of the boss and the inner wall of the pipe, the conical sliding block is arranged in the space, and a sealing ring is arranged between the outer edge of the lower portion of the boss and the bottom plate and is in contact connection with the inner wall of the pipe. The water inlet pipe penetrates through the end cover and the lower end of the boss from top to bottom to be connected with the bottom plate, the water inlet pipe penetrates out of the upper end of the end cover to be connected with the water inlet, and a through hole structure III is arranged in the water inlet pipe and communicated with the interior of the pipe. According to the plug, the sealing performance after assembly can be guaranteed, and the problems of an existing plug made of steel are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field especially relates to a be used for pipe material plugging and pressure test frock. BACKGROUND

[0002] With the rapid development of the field of ships, higher requirements are put forward for the safety performance of ship operation, and the safety and reliability performance of the ship pipeline system is extremely important. The pipeline plug is an important part of the ship pipeline system. During the operation of the ship, some polluting substances will be generated and discharged at the fixed storage pipeline position. The tail end of the position is often sealed with a plug. Because steel has the characteristics of high strength, high temperature resistance, pressure resistance and corrosion resistance, steel plugs are widely used. However, the commonly used steel plugs have the problems of complex structure, heavy weight and difficult operation. SUMMARY

[0003] According to the above technical problems, a pipe material plugging and pressure testing tool is provided.

[0004] The technical means adopted by the utility model are as follows:

[0005] A pipe material plugging and pressure testing tool, comprising: an end cover, a boss, a conical slider, a sealing ring, a bottom plate, a water inlet pipe, a nut and a bolt, the end cover, the boss and the bottom plate are arranged in order from top to bottom;

[0006] The end cover, the boss and the bottom plate are connected by the nut and the bolt, wherein the bolt penetrates the lower end of the end cover and the boss and is connected with the bottom plate from top to bottom, and the nut is connected to the upper end of the bolt and is in contact with the upper surface of the end cover;

[0007] The lower part of the end cover is used for clamping the pipe opening of the pipe material, the boss and the bottom plate are placed inside the pipe material, there is a space between the outer wall of the boss and the inner wall of the pipe material, the conical slider is placed in the space, and a sealing ring is arranged between the lower outer edge of the boss and the bottom plate, and the sealing ring is in contact with the inner wall of the pipe material;

[0008] The water inlet pipe penetrates the lower end of the end cover and the boss and is connected with the bottom plate from top to bottom, the upper end of the water inlet pipe penetrates the end cover and is connected with the water inlet, the inside of the water inlet pipe has a through hole structure III, and the through hole structure III is in communication with the inside of the pipe material.

[0009] Further, the end cover has a through hole structure II and a through hole structure I penetrating from inside to outside in order, the through hole structure II is located in the middle, at least two through hole structures I are provided and are distributed in a circle around the through hole structure II, the bolt penetrates and is connected in the through hole structure I, and the water inlet pipe penetrates and is connected in the through hole structure II;

[0010] The lower part of the end cover is a tapered structure which is inserted into the inside of the pipe and clamped at the pipe opening of the pipe.

[0011] Further, the two sides of the end cover are connected with lifting rings, wherein the two sides of the end cover are provided with internal thread structure I, and the lifting rings are connected with the internal thread structure I.

[0012] Further, the boss is a conical frustum structure, the cross-sectional shape is isosceles trapezoidal; the outer contour of the boss is a slope structure I; the boss is provided with a countersunk hole structure I and a stepped hole structure from inside to outside; the countersunk hole structure I is located in the middle; the stepped hole structure is at least provided with two, which are distributed around the countersunk hole structure I; the bolt is connected in the stepped hole structure; and the water inlet pipe is connected in the countersunk hole structure I.

[0013] Further, the lower edge and the lower middle part of the boss are respectively provided with a groove structure I and a groove structure II, and the groove structure I and the groove structure II are both provided with sealing rings; the groove structure II is located between the stepped hole structure and the countersunk hole structure I, and is close to the countersunk hole structure I.

[0014] Further, the stepped hole structure includes a first hole and a second hole which are tapered from bottom to top, and a spring is arranged in the inside of the lower first hole, which is sleeved on the outside of the bolt.

[0015] The countersunk hole structure I includes a third hole and a fourth hole which are tapered from top to bottom, and a spring is arranged in the inside of the upper third hole, which is sleeved on the outside of the water inlet pipe.

[0016] Further, the tapered slide block is a tapered structure, one side of the tapered slide block close to the inner wall of the pipe is provided with a sawtooth structure for contacting the inner wall of the pipe; the other side of the tapered slide block close to the boss is a slope structure II for contacting and connecting with the slope structure I of the boss.

[0017] Further, the middle part of the sawtooth structure is provided with a groove structure III, and a spring ring is arranged in the groove structure III.

[0018] Further, the bottom plate is sequentially provided with a through hole and a countersunk hole structure II from inside to outside, the through hole is provided in the middle, and the inside of the through hole is provided with an internal thread structure II; the countersunk hole structure II is at least provided with two, which are distributed around the through hole; the lower end of the bolt is connected with the countersunk hole structure II, and the lower end of the water inlet pipe is connected with the internal thread structure II.

[0019] Further, the upper end of the water inlet pipe is provided with a thread structure I, and the thread structure I is connected with the water inlet; the lower end of the water inlet pipe is provided with a thread structure II, and the thread structure II is threadedly connected with the internal thread structure II of the bottom plate.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The tooling for pipe plugging and pressure testing provided by this utility model is lightweight: the end cap and boss parts of the plug are made of high-strength aluminum alloy, which significantly reduces the weight compared to steel.

[0022] 2. The tooling for pipe sealing and pressure testing provided by this utility model has excellent sealing performance: the end cap is positioned on the boss by a stud and then connected to the base plate. Under a certain thread preload, the boss and the base plate are pressed together, changing the degree of expansion of the sealing ring and forming a sealing contact on the inner wall of the pipe, thus ensuring the sealing performance after assembly.

[0023] 3. The tooling for pipe plugging and pressure testing provided by this utility model has high reliability: the plug can be directly connected to the bare pipe fitting without the need for other structural forms to fix the tooling; at the same time, the bottom of the end cap has a conical structure, which allows the tooling to be better positioned during the installation of large-size bare pipe fittings, ensuring precise fit with the bare pipe fitting, thereby increasing reliability.

[0024] Based on the above reasons, this utility model can be widely promoted in fields such as pipeline connection. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the end cap structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the boss of this utility model.

[0029] Figure 4 This is a schematic diagram of the conical slider of this utility model, where (a) is a sectional view and (b) is a side view.

[0030] Figure 5 This is a schematic diagram of the structure of the spring coil of this utility model.

[0031] Figure 6 This is a schematic diagram of the sealing ring of this utility model.

[0032] Figure 7This is a schematic diagram of the structure of the base plate of this utility model.

[0033] Figure 8 This is a schematic diagram of the water inlet pipe of this utility model.

[0034] In the diagram: 1. End cap; 2. Boss; 3. Conical slider; 4. Spring ring; 5. Sealing ring; 6. Base plate; 7. Inlet pipe; 8. Lifting ring; 9. Nut; 10. Bolt; 11. Spring;

[0035] 12. Internal thread structure I; 13. Through hole structure I; 14. Tapered structure; 15. Through hole structure II;

[0036] 21. Inclined Structure I; 22. Groove Structure I; 23. Stepped Hole Structure; 24. Countersunk Hole Structure I; 25. Groove Structure II;

[0037] 31. Serrated structure; 32. Inclined structure II; 33. Groove structure III;

[0038] 61. Internal thread structure II; 62. Countersunk hole structure II;

[0039] 71. Threaded Structure I; 72. Threaded Structure II; 73. Through Hole Structure III. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] This utility model provides a tooling for pipe plugging and pressure testing with advantages such as light weight, high reliability, good sealing performance, simple structure and easy operation. It is a plug structure that solves the problems of existing steel plugs.

[0042] like Figure 1As shown, this utility model discloses a tooling for pipe sealing and pressure testing, comprising an end cap 1, a boss 2, a conical slider 3, a spring ring 4, a sealing ring 5, a base plate 6, a water inlet pipe 7, a lifting ring 8, a nut 9, a bolt 10, and a spring 11. The end cap 1, the boss 2, and the base plate 6 are connected by the nut 9 and the bolt 10, wherein the bolt 10 passes through the lower end of the end cap 1 and the boss 2 from top to bottom and is connected to the base plate 6, and the nut 9 is connected to the upper end of the bolt 10 and contacts the upper surface of the end cap 1; the end cap 1 is positioned on the boss 2 by the bolt 10 (stud) and then connected to the base plate 6. The end cap 1 is positioned below the pipe opening. The boss 2 and base plate 6 are located inside the pipe. The tapered slider 3 is positioned in the space between the boss 2 and the inner wall of the pipe. A spring ring 4 is fitted onto the tapered slider 3, securing it to the boss 2. A sealing ring 5 is provided between the lower outer edge of the boss 2 and the base plate 6, and the sealing ring 5 contacts and connects to the inner wall of the pipe. The inlet pipe 7 passes through the end cap 1 and the lower end of the boss 2, connecting to the base plate 6. The inlet pipe 7 extends from the upper end of the end cap 1 and connects to the inlet. The inlet pipe 7 has a through-hole structure Ⅲ73, which communicates with the inside of the pipe. A lifting ring 8 is connected to the end cap 1. A spring 11 is fitted below the bolt 10, and a spring 11 is fitted on the outer wall of the middle section of the inlet pipe 7. The end cap 1 is positioned on the boss 2 by bolts 10 and then connected to the base plate 6. Under a certain thread preload, the boss 2 and the base plate 6 are pressed together, changing the degree of expansion of the sealing ring 5, forming a sealing contact on the inner wall of the pipe, and finally ensuring the sealing performance after assembly.

[0043] End cap 1 is disc-shaped, see Figure 2 The end cap 1 is made of aluminum alloy. It has internal thread structures I12 on both sides, and small through-hole structures I13 near the internal thread structures I12. The bottom of the end cap 1 is a 95° conical structure 14, which is inserted into the pipe and engaged at the pipe opening. A large through-hole structure II15 is located in the middle of the end cap 1. At least two through-hole structures I13 are provided, circumferentially distributed around through-hole structure II15. Bolts 10 are inserted through through-hole structures I13, and water inlet pipe 7 is inserted through through-hole structure II15. In this embodiment, two through-hole structures I13 are provided, symmetrically arranged about through-hole structure II15.

[0044] See the structural diagram of boss 2. Figure 3The material is aluminum alloy. The boss 2 is a frustum conical structure with an isosceles trapezoidal cross-section. The outer contour of the boss 2 is a 75° inclined structure I21. The bottom of the 75° inclined structure has a groove structure I22 (located at the lower outer edge of the boss 2) to facilitate the installation of the sealing ring 5. The sealing ring 5 here contacts the inner wall of the pipe and the bottom plate 6. At the same time, there is a stepped hole structure 23 near the 75° inclined structure I21. The middle part of the boss 2 has a countersunk hole structure I24. There is a groove structure II25 near the countersunk hole structure I24 to facilitate the installation of the sealing ring 5. The sealing ring 5 here contacts the bottom plate 6. The groove structure II25 is located between the stepped hole structure 23 and the countersunk hole structure I24, and is close to the countersunk hole structure I24. There are at least two stepped hole structures 23, which are distributed circumferentially around the countersunk hole structure I24. Bolt 10 is connected through the stepped hole structure 23, and water inlet pipe 7 is connected through the countersunk hole structure I 24. In this embodiment, there are at least two stepped hole structures 23, which are symmetrically arranged about the countersunk hole structure I 24. The stepped hole structure 23 includes a first hole and a second hole that taper from bottom to top and are connected. A spring 11 is installed inside the lower first hole, and the spring 11 is sleeved on the outside of bolt 10. The countersunk hole structure I 24 includes a third hole and a fourth hole that taper from top to bottom and are connected. A spring 11 is installed inside the upper third hole, and the spring 11 is sleeved on the outside of water inlet pipe 7.

[0045] The conical slider 3 is made of stainless steel; its structural diagram is shown below. Figure 4 The left end of the conical slider 3 has a serrated structure 31 that contacts the inner wall of the tube. When subjected to tightening torque, it increases the degree of contact with the inner wall of the tube and plays a fixing role. The right end of the conical slider 3 has a 75° slope structure II 32, which is installed at the position of the 75° slope structure I 21 on the boss 2 and contacts the 75° slope structure I 21. The middle part of the serrated structure 31 has a groove structure III 33, which facilitates the installation of the spring ring 4.

[0046] Spring coil 4, such as Figure 5 As shown, the selection is based on actual tooling requirements. It is placed at the groove structure Ⅲ33 position in the middle of the conical slider 3; due to the large elasticity of the spring ring 4, it has a fixing and tightening effect on the conical slider 3.

[0047] Sealing ring 5 is made of fluororubber, such as Figure 6 As shown. The groove structure I22 at the bottom of the 75° inclined structure I21 on the boss 2 and the groove structure II25 near the countersunk hole structure I24, under a certain pre-tightening force, increase the expansion of the sealing ring 5 and increase the sealing performance.

[0048] The base plate 6 is made of stainless steel, see Figure 7The middle part has a through hole with an internal thread structure II61 inside. A countersunk hole structure II62 is located near the internal thread structure II61. At least two countersunk hole structures II62 are provided, circumferentially distributed around the through hole. The lower end of the bolt 10 is threaded to the countersunk hole structure II62, and the lower end of the water inlet pipe 7 is threaded to the internal thread structure II61. The interior of the water inlet pipe 7, the through hole, and the interior of the pipe are interconnected. In this embodiment, two countersunk hole structures II62 are provided, symmetrically arranged about the through hole.

[0049] The inlet pipe 7 has a rotating feature, see Figure 8 The upper end of the water inlet pipe 7 has a threaded structure I71, which is connected to the water inlet. The lower end of the water inlet pipe 7 has a threaded structure II72, which is threaded to the internal threaded structure II61 of the base plate 6. The inside of the water inlet pipe 7 has a through hole structure III73 to ensure that water can flow into the pipe.

[0050] The lifting ring 8, nut 9, bolt 10, and spring 11 are all standard parts. The lifting ring 8 is connected to the internal thread structure I12 of the end cap 1, which facilitates the installation and disassembly of the plug tooling. The bolt 10 facilitates the connection between the end cap 1, the boss 2, and the base plate 6. The nut 9 is used for locking and provides locking force. The spring 11 is placed in the stepped hole structure 23 and the countersunk hole structure I24 of the boss 2 and provides support.

[0051] During use, first connect the stud 10 to the countersunk hole structure II 62 of the base plate 6 by thread. Then, put the spring 11 on the stud 10. Align the stepped hole structure 23 of the boss 2 with the sealing ring 5 installed with the stud 10 and place it on the spring 11 on the base plate 6. After installation, attach the 75° slope structure II 32 of the tapered slider 3 to the 75° slope structure I 21 of the boss 2, and place the spring ring 4 at the groove structure III 33 in the middle part of the sawtooth structure 31 of the tapered slider 3, thereby fixing the tapered slider 3 at the 75° slope structure I 21 of the boss 2. Connect the lifting ring 8 to the internal thread structure I 12 of the end cover 1 by thread. Then, align the through hole structure I 13 of the end cover 1 with the stud 10, and place the cover plate 1 on the spring 11 on the countersunk hole structure I 24 of the boss 2 along the stud 10. Finally, use the nut 9 to lock the stud 10 protruding from the end face of the end cover 1. Ensure that the conical structure 14 of the end cap 1 is aligned with the inner diameter of the pipe. Connect the installed test fixture to the pipe. By adjusting the tightening torque of the nut 9, the base plate is moved upward. On the one hand, this changes the compression of the sealing ring 5, increases the contact between the sealing ring 5 and the inner wall of the pipe, thereby improving the sealing performance. On the other hand, the upward movement of the base plate 6 causes the boss 2 to move upward, which allows the conical slider 3 to move downward relative to the pipe along a 75° slope, causing the serrated structure 31 of the conical slider 3 to contact the inner wall of the pipe, thereby fixing the fixture to the pipe.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fixture for pipe plugging and pressure testing, characterized in that, include: End cap (1), boss (2), conical slider (3), sealing ring (5), base plate (6), water inlet pipe (7), nut (9) and bolt (10), the end cap (1), boss (2) and base plate (6) are arranged in order from top to bottom; The end cap (1), boss (2) and base plate (6) are connected by nuts (9) and bolts (10), wherein the bolts (10) pass through the lower end of the end cap (1) and boss (2) from top to bottom and are connected to the base plate (6), and the nuts (9) are connected to the upper end of the bolts (10) and are in contact with the upper surface of the end cap (1). The end cap (1) is used to be clamped at the pipe opening. The boss (2) and the base plate (6) are placed inside the pipe. There is a space between the outer wall of the boss (2) and the inner wall of the pipe. The conical slider (3) is placed in this space. A sealing ring (5) is provided between the lower outer edge of the boss (2) and the base plate (6). The sealing ring (5) is in contact with the inner wall of the pipe. The water inlet pipe (7) passes through the end cap (1) and the lower end of the boss (2) from top to bottom and is connected to the bottom plate (6). The water inlet pipe (7) passes through the upper end of the end cap (1) and is connected to the water inlet. The inside of the water inlet pipe (7) has a through hole structure III (73), which is connected to the inside of the pipe.

2. The fixture for pipe plugging and pressure testing according to claim 1, characterized in that, The end cap (1) has through holes II (15) and I (13) sequentially through from the inside to the outside. The through holes II (15) are located in the middle, and there are at least two through holes I (13) distributed circumferentially around the through holes II (15). The bolt (10) is connected through the through holes I (13), and the water inlet pipe (7) is connected through the through holes II (15). The end cap (1) has a tapered structure (14) below it, which is inserted into the inside of the pipe and snapped into the pipe opening.

3. The fixture for pipe plugging and pressure testing according to claim 1, characterized in that, The end cap (1) is connected to two sides by lifting rings (8), wherein the end cap (1) is provided with internal thread structure I (12) on both sides, and the lifting rings (8) are connected to the internal thread structure I (12).

4. The fixture for pipe sealing and pressure testing according to claim 1, characterized in that, The boss (2) is a truncated cone structure with an isosceles trapezoidal cross-section. The outer contour of the boss (2) is a slope structure I (21). The boss (2) has countersunk hole structure I (24) and stepped hole structure (23) running through it from the inside to the outside. The countersunk hole structure I (24) is located in the middle. There are at least two stepped holes (23) that are distributed circumferentially around the countersunk hole structure I (24). The bolt (10) is connected through the stepped hole structure (23), and the water inlet pipe (7) is connected through the countersunk hole structure I (24).

5. The fixture for pipe plugging and pressure testing according to claim 4, characterized in that, The lower outer edge and lower middle part of the boss (2) are respectively provided with groove structure I (22) and groove structure II (25). Both groove structure I (22) and groove structure II (25) are equipped with sealing rings (5). The groove structure II (25) is located between the stepped hole structure (23) and the countersunk hole structure I (24), and is close to the countersunk hole structure I (24).

6. The fixture for pipe plugging and pressure testing according to claim 4, characterized in that, The stepped hole structure (23) includes a first hole and a second hole that taper from bottom to top. A spring (11) is installed inside the lower first hole and is fitted around the outside of the bolt (10). The countersunk hole structure I (24) includes a third hole and a fourth hole that taper from top to bottom. A spring (11) is installed inside the upper third hole, and the spring (11) is sleeved on the outside of the water inlet pipe (7).

7. The fixture for pipe plugging and pressure testing according to claim 1, characterized in that, The conical slider (3) has a conical structure. A serrated structure (31) is provided on one side of the conical slider (3) near the inner wall of the pipe for contacting the inner wall of the pipe. The other side of the conical slider (3) near the boss (2) has a slope structure II (32) for contacting and connecting with the slope structure I (21) of the boss (2).

8. The fixture for pipe plugging and pressure testing according to claim 7, characterized in that, The sawtooth structure (31) has a groove structure Ⅲ (33) in the middle part, and a spring ring (4) is installed in the groove structure Ⅲ (33).

9. The fixture for pipe plugging and pressure testing according to claim 1, characterized in that, The base plate (6) is provided with through holes and countersunk hole structures II (62) from the inside to the outside. The through holes are opened through the middle and have internal thread structures II (61). There are at least two countersunk hole structures II (62) distributed around the through holes. The lower end of the bolt (10) is connected to the countersunk hole structure II (62) and the lower end of the water inlet pipe (7) is connected to the internal thread structure II (61).

10. The fixture for pipe plugging and pressure testing according to claim 1, characterized in that, The upper end of the water inlet pipe (7) is provided with a threaded structure I (71), which is connected to the water inlet; the lower end of the water inlet pipe (7) is provided with a threaded structure II (72), which is threadedly connected to the internal threaded structure II (61) of the base plate (6).

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