Novel pressure testing device for large-diameter pipe

Abstract

The utility model discloses a novel pressure test device for a large-diameter pipe, and relates to the technical field of pressure test equipment. The novel pressure test device comprises a locking mechanism, a sealing end plate and a pressure test pipeline, the sealing end plate comprises a first end plate and a second end plate, a large-diameter pipe is located between the first end plate and the second end plate, and the first end plate is detachably connected with the second end plate through the locking mechanism; sealing is formed at the contact positions of the first end plate, the second end plate and the large-diameter pipe. The pressure test pipeline comprises an inlet pipe and an outlet pipe, the inlet pipe is connected with the first end plate, the outlet pipe is connected with the second end plate, the inlet pipe and the outlet pipe are both provided with valves, and the outlet pipe is further provided with a pressure gauge. According to the utility model, the sealing grooves on the first end plate and the second end plate or the rough planes provided with the rubber gaskets are utilized to test the pressure of large-diameter pipes with different specifications, so that the universality is improved, the applicability is wider, and the pressure test operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing equipment technology, and in particular to a novel pressure testing device for large-diameter pipes. Background Technology

[0002] With industrial development, the use of large-diameter pipes is becoming increasingly common, especially in industries such as chemical, power, and water supply and drainage, where the demand for large-diameter pipes is growing rapidly. These large-diameter pipes must undergo pressure testing before use to ensure their sealing and pressure-bearing capacity. However, existing pressure testing equipment is mostly suitable for small-diameter pipes, and pressure testing is usually conducted only after equipment completion or a complex process. Because current pressure testing equipment cannot test pipes of different diameters, testing different diameter pipes requires replacing components or using different pressure testing devices, which easily leads to low testing efficiency for large-diameter pipes and poses problems such as high leakage risk and cumbersome subsequent maintenance. Utility Model Content

[0003] The current pressure testing equipment cannot test large-diameter pipes of various specifications, resulting in low testing efficiency for large-diameter pipes, high risk of leakage, and complicated subsequent maintenance.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A novel pressure testing device for large-diameter pipes includes a locking mechanism, a sealing end plate, and a pressure testing pipeline. The sealing end plate includes a first end plate and a second end plate, with the large-diameter pipe located between the first end plate and the second end plate. The first end plate is detachably connected to the second end plate via the locking mechanism. The first end plate forms a seal with one end of the large-diameter pipe, and the second end plate forms a seal with the other end of the large-diameter pipe. The pressure testing pipeline includes an inlet pipe and an outlet pipe. The inlet pipe is connected to the first end plate, and the outlet pipe is connected to the second end plate. Valves are installed on both the inlet pipe and the outlet pipe, and a pressure gauge is also installed on the outlet pipe.

[0006] Furthermore, the locking mechanism includes several pull rods, each of which has a threaded end and is threadedly connected to a nut.

[0007] Furthermore, the first end plate and the second end plate have a plurality of screw holes adapted to the pull rods, and each pull rod is connected to the first end plate and the second end plate by a nut.

[0008] Furthermore, several sealing grooves are formed on one side wall of the first end plate and the second end plate, and the other side wall is a rough plane.

[0009] Furthermore, each of the sealing grooves is arranged coaxially in the radial direction.

[0010] Furthermore, each of the sealing grooves is provided with a sealing ring.

[0011] Furthermore, the ends of the large-diameter pipe are positioned within the sealing groove, or abut against the rough surface via rubber gaskets.

[0012] Furthermore, the first end cap has a through first connection hole, the inlet pipe is threaded to the first connection hole, and the inlet pipe is equipped with a first ball valve.

[0013] Furthermore, the second end cap is provided with a plurality of through second connecting holes, each of the second connecting holes being arranged sequentially from the inside to the outside, and the outlet pipe being threadedly connected to the second connecting holes.

[0014] Furthermore, the valves on the outlet pipe include a proportional unloading valve and a second ball valve. The pressure gauge, the proportional unloading valve, and the second ball valve are sequentially arranged on the outlet pipe, and the pressure gauge is adjacent to the second end plate.

[0015] The beneficial effects of this utility model are as follows: This utility model, through sealing grooves of different specifications on the first and second end plates, can assist in the rapid positioning and installation of large-diameter pipes of different specifications, and achieves a good sealing state in conjunction with the sealing ring. This utility model utilizes the sealing grooves on the first and second end plates, or the rough surface with rubber gaskets, to pressure test large-diameter pipes of different specifications, improving the versatility of this utility model and making its application more extensive. The second end plate of this utility model, through several second connecting holes, is used to connect the outlet pipe when pressure testing large-diameter pipes of different specifications, facilitating the rapid and convenient achievement of a full-pipe state for large-diameter pipes, reducing the position adjustment work before pressure testing, and making the pressure testing operation more convenient and rapid. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic diagram of the structural principle of one embodiment of this utility model.

[0017] Figure 2 As shown Figure 1 The front view.

[0018] Figure 3 As shown Figure 2 Sectional view at point A in the middle.

[0019] Figure 4 As shown Figure 2 The left view.

[0020] Figure 5 As shown Figure 2 The right view.

[0021] Explanation of reference numerals in the attached drawings: 1. First end plate; 2. Second end plate; 3. Large diameter pipe; 4. Tie rod; 5. Inlet pipe; 6. First ball valve; 7. Outlet pipe; 8. Pressure gauge; 9. Proportional unloading valve; 10. Second ball valve; 11. Second connecting hole. Detailed Implementation

[0022] This utility model discloses a novel pressure testing device for large-diameter pipes. The following describes one embodiment of this utility model in detail with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a novel pressure testing device for large-diameter pipes includes a locking mechanism, a sealing end plate, and a pressure testing pipeline. The locking mechanism includes several pull rods 4, each with a threaded end and a nut threadedly connected to it. The sealing end plate includes a first end plate 1 and a second end plate 2, each with several threaded holes adapted to the pull rods 4. Each pull rod 4 is connected to the first end plate 1 and the second end plate 2 via a nut, for fastening the first end plate 1 and the second end plate 2. Several sealing grooves arranged coaxially in the radial direction are formed on one side wall of the first end plate 1 and the second end plate 2, and a sealing ring is disposed in each sealing groove. The sealing rings are O-rings. Because the specifications of each sealing groove are different, it can be used for quick positioning and installation of large-diameter pipes 3 of different specifications, and can ensure a good sealing effect between the end of the large-diameter pipe 3 and the sealing ring.

[0024] The other side walls of the first end plate 1 and the second end plate 2 are rough planes. A large-diameter pipe 3 is placed between the first end plate 1 and the second end plate 2, and the first end plate 1 is detachably connected to the second end plate 2 via a locking mechanism. The end of the large-diameter pipe 3 is positioned in a sealing groove and contacts a sealing ring located in the sealing groove to form a seal; the end of the large-diameter pipe 3 can also abut against the rough planes of the first end plate 1 and the second end plate 2 via a rubber gasket, forming a seal with the rubber gasket under the action of the pull rod 4.

[0025] The pressure testing pipeline includes an inlet pipe 5 and an outlet pipe 7. The inlet pipe 5 is connected to the first end plate 1, and the outlet pipe 7 is connected to the second end plate 2. A through-hole is provided at the center of the first end cap, and the inlet pipe 5 is threaded into the first connection hole. A first ball valve 6 is installed on the inlet pipe 5. Several through-holes 11 are provided on the second end cap, arranged sequentially from the inside to the outside. The outlet pipe 7 is threaded into the second connection holes 11. The outlet pipe 7 is connected to the second connection holes 11 at different positions to facilitate the rapid and convenient filling of the space inside the large-diameter pipe 3 with the pressure testing medium when testing large-diameter pipes 3 of different specifications, which helps to reduce the position adjustment operation before pressure testing. A pressure gauge 8, a proportional unloading valve 9, and a second ball valve 10 are installed on the outlet pipe 7. The pressure gauge 8 is adjacent to the second end plate 2. The proportional unloading valve 9 has a pressure relief port, which can adjust the relief pressure according to the test pressure each time. If the pressure in the large-diameter pipe 3 exceeds the safe relief pressure, it can be discharged in time through the pressure relief port. It can protect the pressure testing device and the large-diameter pipe 3 under test in real time during the pressure test.

[0026] During use, the large-diameter tube 3 for pressure testing is placed between the first end plate 1 and the second end plate 2. Both ends of the large-diameter tube 3 are placed in the sealing grooves according to its specifications, making contact with the sealing rings. If the large-diameter tube 3 to be tested is of an unconventional diameter and does not fit the sealing grooves, the rough surface on the opposite side of the first end plate 1 and the second end plate 2 away from the sealing grooves can be used. The unconventional diameter large-diameter tube 3 will contact the rough surface of the first end plate 1 and the second end plate 2 through a rubber gasket. The operator uses the pull rod 4 and the nut to connect the first end plate 1 and the second end plate 2, and rotates the nut to seal the large-diameter tube 3 using the sealing rings or rubber gaskets.

[0027] After installing the large-diameter pipe 3 with the first end plate 1, the second end plate 2, and each tie rod 4, connect the inlet pipe 5 to the first connecting hole and seal it. Then, select a suitable second connecting hole 11 for the outlet pipe 7 according to the specifications of the large-diameter pipe 3 and seal it. Simultaneously, seal the remaining second connecting holes 11 with bolts. The external high-pressure pump pipeline injects the test pressure medium into the large-diameter pipe 3 through the inlet pipe 5. Operators can reduce the loss of the test pressure medium and increase the pressure inside the large-diameter pipe 3 by closing the second ball valve 10. By observing the pressure gauge 8, the first ball valve 6 and the high-pressure pump can be closed when the test pressure is reached. During the pressure test, the proportional unloading valve 9 works in conjunction with the pressure gauge 8 to adjust the discharge pressure according to each test pressure. When the test pressure exceeds the safe discharge pressure, it can promptly release pressure through the discharge port of the proportional unloading valve 9, providing real-time protection for the pressure testing device and the large-diameter pipe 3 during the pressure test.

[0028] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A novel pressure testing device for large-diameter pipes, characterized in that: The system includes a locking mechanism, a sealing end plate, and a pressure testing pipeline. The sealing end plate includes a first end plate (1) and a second end plate (2). A large-diameter pipe (3) is located between the first end plate (1) and the second end plate (2). The first end plate (1) is detachably connected to the second end plate (2) through the locking mechanism. The first end plate (1) forms a seal with one end of the large-diameter pipe (3), and the second end plate (2) forms a seal with the other end of the large-diameter pipe (3). The pressure testing pipeline includes an inlet pipe (5) and an outlet pipe (7). The inlet pipe (5) is connected to the first end plate (1), and the outlet pipe (7) is connected to the second end plate (2). Valves are provided on both the inlet pipe (5) and the outlet pipe (7), and a pressure gauge (8) is also provided on the outlet pipe (7).

2. The novel pressure testing device for large-diameter pipes according to claim 1, characterized in that: The locking mechanism includes several pull rods (4), each of which has a threaded end and is threaded with a nut.

3. A novel pressure testing device for large-diameter pipes according to claim 2, characterized in that: The first end plate (1) and the second end plate (2) have a plurality of screw holes adapted to the pull rods (4), and each pull rod (4) is connected to the first end plate (1) and the second end plate (2) by a nut.

4. A novel pressure testing device for large-diameter pipes according to claim 1, characterized in that: Several sealing grooves are provided on one side wall of the first end plate (1) and the second end plate (2), and the other side wall is a rough plane.

5. A novel pressure testing device for large-diameter pipes according to claim 4, characterized in that: Each of the sealing grooves is arranged coaxially along the radial direction.

6. A novel pressure testing device for large-diameter pipes according to claim 4, characterized in that: Each of the aforementioned sealing grooves is equipped with a sealing ring.

7. A novel pressure testing device for large-diameter pipes according to claim 6, characterized in that: The ends of the large-diameter pipe (3) are disposed in the sealing groove or abutted against the rough surface by rubber gaskets.

8. A novel pressure testing device for large-diameter pipes according to claim 1, characterized in that: The first end cap has a through first connection hole, the inlet pipe (5) is threaded to the first connection hole, and the inlet pipe (5) is equipped with a first ball valve (6).

9. A novel pressure testing device for large-diameter pipes according to claim 1, characterized in that: The second end cap has several through second connection holes (11), and each second connection hole (11) is arranged sequentially from the inside to the outside. The outlet pipe (7) is threadedly connected to the second connection hole (11).

10. A novel pressure testing device for large-diameter pipes according to claim 9, characterized in that: The valves on the outlet pipe (7) include a proportional unloading valve (9) and a second ball valve (10). The pressure gauge (8), the proportional unloading valve (9) and the second ball valve (10) are sequentially arranged on the outlet pipe (7). The pressure gauge (8) is adjacent to the second end plate (2).

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