Non-standard titanium alloy pipe quick-release hydraulic test sealing device

Abstract

The utility model provides a non-standard titanium alloy pipe quick-release hydraulic test sealing device which comprises a threaded connecting rod provided with an exhaust hole, an exhaust through hole, a liquid injection hole and a liquid injection through hole, the threaded connecting rod is sleeved with a first flange sealing component and a second flange sealing component, a first end nut is arranged on the side of the first flange sealing component, and a second end nut is arranged on the side of the second flange sealing component. And a fastening sleeve, an axial positioning sleeve and a second end nut are arranged beside the second flange sealing component. The non-standard titanium alloy pipe hydraulic test sealing device is used for hydraulic tests of non-standard titanium alloy pipes of different specifications, the device can be adjusted according to the lengths of the non-standard titanium alloy pipes, meanwhile, flange sealing parts can be replaced according to different inner diameters, and the problems that the sealing position of the non-standard titanium alloy pipe hydraulic test sealing device leaks, the measuring range is small, and the testing efficiency is high are solved. The device has the advantages of being low in cost, good in sealing performance and rapid to disassemble, and is suitable for hydraulic tests of large-diameter, non-standard, small-batch, different-specification and different-length pipes.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic testing of pipes, and particularly relates to a quick-release hydraulic testing sealing device for non-standard titanium alloy pipes. Background Technique

[0002] Large-diameter non-standard titanium alloy pipes are commonly used in important fields such as aerospace, petrochemical, nuclear chemical, marine equipment, and medical equipment. Its hydraulic inspection is a key item, which can detect quality problems such as cracks and sand holes.

[0003] Hydraulic testing is a commonly used test method for testing the safety performance of metal pipes. It is used to inject a certain pressure of liquid into the pipes and maintain it for a certain period of time to detect the mechanical property strength and leakage test of the pipes.

[0004] In the prior art, the hydraulic testing device is often applicable to small-diameter national standard specifications, with a relatively complex system structure, high equipment cost, and large volume, and it cannot well meet the hydraulic testing requirements of small-batch, large-specification, and non-standard pipes. Pipes are often produced by the processing method of piercing a tube blank rod by skew rolling and then cold rolling. Compared with machined pipes, the accuracy of wall thickness tolerance, outer diameter tolerance, straightness tolerance, and cylindricity tolerance of this production method is poor. Therefore, it is required that the hydraulic testing device has better adaptability. Therefore, the existing hydraulic testing device is not suitable for the hydraulic testing requirements of large-diameter titanium alloy non-standard pipes in petrochemical and nuclear chemical equipment.

[0005] Therefore, it is very urgent to design a quick-release hydraulic testing sealing device for large-diameter titanium alloy non-standard pipes. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a quick-release hydraulic testing sealing device for non-standard titanium alloy pipes in view of the above-mentioned deficiencies of the prior art. The device is convenient for installing the first flange sealing component, the first end nut, the second flange sealing component, the fastening sleeve, the axial positioning sleeve, and the second end nut by setting a threaded connecting rod. The first flange sealing component and the second flange sealing component are used to be clamped inside the non-standard titanium alloy pipe. By providing an exhaust hole, an exhaust through hole, a liquid injection hole, and a liquid injection through hole, high-pressure liquid is introduced into the non-standard titanium alloy pipe through the liquid injection hole and the liquid injection through hole, and air is discharged from the exhaust through hole and the exhaust hole to realize the hydraulic testing of the non-standard titanium alloy pipe.

[0007] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A quick-release hydraulic test sealing device for non-standard titanium alloy pipes, characterized in that the device includes a threaded connecting rod, and exhaust holes and liquid injection holes are respectively provided at both ends of the threaded connecting rod. An exhaust through hole communicating with the bottom of the exhaust hole and a liquid injection through hole communicating with the bottom of the liquid injection hole are also provided on the threaded connecting rod. A first flange sealing component is sleeved at one end of the threaded connecting rod where the exhaust hole is provided, and a second flange sealing component with the same structure as the first flange sealing component is sleeved at the other end. A first end nut is arranged beside the first flange sealing component, and a fastening sleeve, an axial positioning sleeve and a second end nut are sequentially arranged beside the second flange sealing component.

[0008] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that the first flange sealing component includes a flange sealing seat, a protrusion is provided on the flange sealing seat, two retaining rings are fitted beside the protrusion, an outer O-ring is installed between the two retaining rings, a flange cover and fastening bolts for fixing the retaining rings are also provided on the flange sealing seat, a groove is provided on the side of the flange sealing seat in contact with the threaded connecting rod, and an inner O-ring is installed in the groove.

[0009] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that the threaded connecting rod is successively a first threaded section, a sealing section, a liquid injection and exhaust section, an adjustment section and a second threaded section from left to right. The outer diameter of the liquid injection and exhaust section is larger than that of the sealing section and the adjustment section, and the outer diameters of the sealing section and the adjustment section are larger than those of the first threaded section and the second threaded section. The exhaust through hole and the liquid injection through hole are both located in the liquid injection and exhaust section.

[0010] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that the first end nut is threadedly and sealingly connected to the first threaded section, the first flange sealing component is sleeved on the sealing section, the second flange sealing component, the fastening sleeve and the axial positioning sleeve are all sleeved on the adjustment section, and the second end nut is threadedly and sealingly connected to the second threaded section.

[0011] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that the first end nut is connected to the first flange sealing component by a first fixing bolt, and the fastening sleeve is connected to the second flange sealing component by a second fixing bolt.

[0012] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that the gap between the protrusion and the inside of the non-standard titanium alloy pipe is 6 mm to 12 mm, and the gap between the retaining ring and the inside of the non-standard titanium alloy pipe is 4 mm to 6 mm.

[0013] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that the retaining ring is made of polytetrafluoroethylene, and the outer O-ring seal and the inner O-ring seal are both made of rubber, and their cross-sections are rectangular.

[0014] The above-mentioned quick-release hydraulic test sealing device for non-standard titanium alloy pipes is characterized in that an exhaust port is installed at the opening of the exhaust hole, and a liquid filling interface is installed at the opening of the liquid injection hole.

[0015] The utility model has the following advantages compared with the prior art:

[0016] 1. By setting the threaded connecting rod, it is convenient to install the first flange sealing component, the first end nut, the second flange sealing component, the fastening sleeve, the axial positioning sleeve and the second end nut. By setting the first flange sealing component and the second flange sealing component to be clamped inside the non-standard titanium alloy pipe, and by providing the exhaust hole, the exhaust through hole, the liquid injection hole and the liquid injection through hole, high-pressure liquid is introduced into the non-standard titanium alloy pipe through the liquid injection hole and the liquid injection through hole, and the air is discharged from the exhaust through hole and the exhaust hole, so as to realize the hydraulic test of the non-standard titanium alloy pipe. It solves the technical problems of leakage at the sealing part of the hydraulic test sealing device for non-standard titanium alloy pipes, small measurement range and poor versatility. This set of device has the advantages of low cost, good sealing performance and quick disassembly, and is suitable for the hydraulic test of non-standard titanium alloy pipes with large diameter, non-standard, small batch, different specifications and different lengths.

[0017] 2. The threaded connecting rod in the utility model is a general part, and different lengths of positioning sleeves can be selected according to the length of the non-standard titanium alloy pipe for adaptation to meet the hydraulic requirements of non-standard titanium alloy pipes with different lengths. For the sealing of non-standard titanium alloy pipes, different specifications of flange sealing components are made according to the pipe specifications, thus solving the hydraulic test of small-batch, non-standard and large-diameter titanium alloy pipes, realizing the generality of some parts, solving the problem of high cost, being easy to disassemble and assemble, having good sealing performance, taking into account the economy of the hydraulic device at the same time, and improving the utilization rate of the device.

[0018] 3. The flange sealing component in the utility model is the key component for sealing non-standard titanium alloy pipes, which is composed of a flange sealing seat, a protrusion, a retaining ring, an outer O-ring seal, a flange cover and fastening bolts. The outer diameter of the protrusion is determined by the non-standard titanium alloy pipe, generally 6 mm to 12 mm smaller than the inner diameter of the non-standard titanium alloy pipe, and the O-ring seal is a rubber ring with a rectangular cross-section. This seal ring should have a certain amount of deformation and sufficient strength. The O-ring seal is extruded by a sealing pressure ring made of polytetrafluoroethylene to deform and generate a sealing force.

[0019] 4. The utility model connects the first end nut and the first flange sealing component by setting the first fixing bolt, positions the first end nut with a wrench, and tightens the fastening bolt. In this process, the retaining ring presses the O-ring to achieve sealing with the inner wall of the non-standard titanium alloy pipe. By setting the second fixing bolt connection, the fastening sleeve and the second flange sealing component are fixed, facilitating the installation of the second flange sealing component.

[0020] The technical solution of the utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the quick-release hydraulic test sealing device for non-standard titanium alloy pipes of the utility model.

[0022] Figure 2 It is a schematic diagram of the connection relationship between the quick-release hydraulic test sealing device for non-standard titanium alloy pipes of the utility model and the non-standard titanium alloy pipe.

[0023] Figure 3 It is a schematic diagram of the connection relationship between the first flange sealing component in the quick-release hydraulic test sealing device for non-standard titanium alloy pipes of the utility model and the non-standard titanium alloy pipe.

[0024] Figure 4 It is a schematic structural diagram of the threaded connecting rod in the quick-release hydraulic test sealing device for non-standard titanium alloy pipes of the utility model.

[0025] Figure 5 It is a schematic structural diagram of the outer O-ring in the quick-release hydraulic test sealing device for non-standard titanium alloy pipes of the utility model.

[0026] Figure 6 is Figure 5 A-A cross-sectional view of

[0027] Description of the reference numerals:

[0028] 1 - Threaded connecting rod; 1-1 - Vent hole; 1-2 - Liquid injection hole;

[0029] 1-3 - Vent through hole; 1-4 - Liquid injection through hole; 1-5 - First thread section;

[0030] 1-6 - Sealing section; 1-7 - Liquid injection and vent section; 1-8 - Adjustment section;

[0031] 1-9 - Second thread section; 2 - First flange sealing component; 2-1 - Flange sealing seat;

[0032] 2-2 - Protrusion; 2-3 - Retaining ring; 2-4 - Outer O-ring;

[0033] 2-5 — Flange cover; 2-6 — Fastening bolt; 2-7 — Inner O-ring seal;

[0034] 3 — Second flange sealing component; 4 — First end nut; 5 — Fastening sleeve;

[0035] 6 — Axial positioning sleeve; 7 — Second end nut; 8 — First fixing bolt;

[0036] 9 — Non-standard titanium alloy pipe. Specific implementation mode

[0037] As Figures 1 to 4 shown, a quick-disassembly hydraulic test sealing device for a non-standard titanium alloy pipe of the present utility model includes a threaded connecting rod 1. Exhaust holes 1-1 and liquid injection holes 1-2 are respectively opened at both ends of the threaded connecting rod 1. An exhaust through hole 1-3 communicating with the bottom of the exhaust hole 1-1 and a liquid injection through hole 1-4 communicating with the bottom of the liquid injection hole 1-2 are also opened on the threaded connecting rod 1. A first flange sealing component 2 is sleeved on one end of the threaded connecting rod 1 where the exhaust hole 1-1 is opened, and a second flange sealing component 3 with the same structure as the first flange sealing component 2 is sleeved on the other end. A first end nut 4 is arranged beside the first flange sealing component 2, and a fastening sleeve 5, an axial positioning sleeve 6 and a second end nut 7 are sequentially arranged beside the second flange sealing component 3.

[0038] It should be noted that by providing the threaded connecting rod 1, it is convenient to install the first flange sealing component 2, the first end nut 4, the second flange sealing component 3, the fastening sleeve 5, the axial positioning sleeve 6 and the second end nut 7. By providing the first flange sealing component 2 and the second flange sealing component 3, they are used to be clamped inside the non-standard titanium alloy pipe 9. By opening the exhaust hole 1-1, the exhaust through hole 1-3, the liquid injection hole 1-2 and the liquid injection through hole 1-4, high-pressure liquid is introduced into the non-standard titanium alloy pipe 9 through the liquid injection hole 1-2 and the liquid injection through hole 1-4, and the air is discharged from the exhaust through hole 1-3 and the exhaust hole 1-1, so as to realize the hydraulic test of the non-standard titanium alloy pipe 9.

[0039] It should be noted that, by setting the first end nut 4, the first flange sealing component 2 is axially fixed, and the parts on the first flange sealing component 2 are also fixed to prevent the first flange sealing component 2 from axially moving during the hydraulic process. By setting the fastening sleeve 5, the parts on the second flange sealing component 3 are fixed, and by setting the axial positioning sleeve 6 and controlling the length of the axial positioning sleeve 6, the position of the second flange sealing component 3 is controlled, thereby controlling the distance between the first flange sealing component 2 and the second flange sealing component 3, and axial positioning is performed. By setting the second end nut 7 for limiting, non-standard titanium alloy pipes 9 of different lengths can be detected. At the same time, the outer diameters of the first flange sealing component 2 and the first flange sealing component 2 can also be set according to the inner diameter of the non-standard titanium alloy pipe 9, which solves the hydraulic test of small batches and large diameter non-standard titanium alloy pipes 9, realizes the common use of some parts, solves the problem of high cost, is easy to disassemble and assemble, has good sealing performance, and takes into account the economy of the hydraulic device, thereby improving the utilization rate of the device.

[0040] It should be noted that the second flange sealing component 3 and the fastening sleeve 5 are not fixed to the threaded connecting rod 1. After the non-standard titanium alloy pipe 9 is installed and liquid is injected, the liquid will cause the second flange sealing component 3 and the fastening sleeve 5 to move to the right and be supported by the axial positioning sleeve 6, thereby controlling the distance between the first flange sealing component 2 and the second flange sealing component 3. In actual use, it is only necessary to adjust the length of the axial positioning sleeve 6 to realize the detection of non-standard titanium alloy pipes 9 of different lengths.

[0041] It should be noted that, since the position of the second flange sealing component 3 needs to be adjusted according to the length of the non-standard titanium alloy pipe 9 , in order to allow the liquid to be injected, the injection through hole 1 - 4 is located in the middle of the threaded connecting rod 1 .

[0042] It should be noted that the first flange sealing component 2 and the second flange sealing component 3 have the same structure and are interchangeable, which facilitates production.

[0043] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, in this embodiment, the first flange sealing component 2 includes a flange sealing seat 2-1. A protrusion 2-2 is provided on the flange sealing seat 2-1. Two retaining rings 2-3 are fitted beside the protrusion 2-2. An outer O-ring 2-4 is clamped between the two retaining rings 2-3. A flange cover 2-5 and fastening bolts 2-6 for fixing the retaining rings 2-3 are also provided on the flange sealing seat 2-1. A groove is provided on the side of the flange sealing seat 2-1 in contact with the threaded connecting rod 1, and an inner O-ring 2-7 is clamped in the groove. By providing the protrusion 2-2 for axially fixing the two retaining rings 2-3 together with the flange cover 2-5, the outer O-ring 2-4 is fixed. By providing the fastening bolts 2-6 to fix the flange cover 2-5 to provide an axial load, the stable installation of the outer O-ring 2-4 is ensured. By providing the outer O-ring 2-4, better sealing performance is provided, and it can well adapt to the specifications and precision errors of the non-standard titanium alloy pipe 9. By providing the groove and the inner O-ring 2-7 to seal the contact surface between the inside of the first flange sealing component 2 and the threaded connecting rod 1, better sealing performance is provided.

[0044] As Figure 4 shown, in this embodiment, the threaded connecting rod 1 is successively the first threaded section 1-5, the sealing section 1-6, the liquid injection and exhaust section 1-7, the adjustment section 1-8, and the second threaded section 1-9 from left to right. The outer diameter of the liquid injection and exhaust section 1-7 is larger than that of the sealing section 1-6 and the adjustment section 1-8. The outer diameters of the sealing section 1-6 and the adjustment section 1-8 are larger than those of the first threaded section 1-5 and the second threaded section 1-9. The exhaust through hole 1-3 and the liquid injection through hole 1-4 are both located in the liquid injection and exhaust section 1-7.

[0045] As Figure 2 and Figure 4 shown, in this embodiment, the first end nut 4 is threadedly and sealingly connected to the first threaded section 1-5. The first flange sealing component 2 is sleeved on the sealing section 1-6. The second flange sealing component 3, the fastening sleeve 5, and the axial positioning sleeve 6 are all sleeved on the adjustment section 1-8. The second end nut 7 is threadedly and sealingly connected to the second threaded section 1-9.

[0046] It should be noted that by making the outer diameter of the liquid injection and exhaust section 1-7 the largest and greater than that of the sealing section 1-6 and the adjustment section 1-8, two steps are formed on the left and right sides. The step on the left is convenient for fixing the first flange sealing component 2, and the step on the right limits the second flange sealing component 3. By making the outer diameters of the first threaded section 1-5 and the second threaded section 1-9 the smallest, two steps are also formed on the left and right. The step on the left is convenient for the first end nut 4 to fix the first flange sealing component 2, and the step on the right is convenient for the second end nut 7 to limit the axial positioning sleeve 6, thereby limiting the fastening sleeve 5 and the second flange sealing component 3. By controlling that both the exhaust through hole 1-3 and the liquid injection through hole 1-4 are located in the liquid injection and exhaust section 1-7, it is ensured that high-pressure liquid is injected into the space formed by the non-standard titanium alloy pipe 9, the first flange sealing component 2 and the second flange sealing component 3.

[0047] As Figure 1 and Figure 2 shown, in this embodiment, the first end nut 4 and the first flange sealing component 2 are connected by the first fixing bolt 8, and the fastening sleeve 5 and the second flange sealing component 3 are connected by the second fixing bolt. By setting the first fixing bolt 8 to connect the first end nut 4 and the first flange sealing component 2, the first end nut 4 is positioned by a wrench to tighten the fastening bolt 2-6. In this process, the retaining ring 2-3 squeezes the O-ring 2-4 to achieve sealing with the inner wall of the measured pipe 9. By setting the second fixing bolt connection, the fastening sleeve 5 and the second flange sealing component 3 are fixed, which is convenient for the installation of the second flange sealing component 3. The fastening process and the sealing principle are the same as those of the first flange sealing component 2.

[0048] In this embodiment, the gap between the protrusion 2-2 and the inside of the non-standard titanium alloy pipe 9 is 6 mm to 12 mm, and the gap between the retaining ring 2-3 and the inside of the non-standard titanium alloy pipe 9 is 4 mm to 6 mm. By controlling the gap between the protrusion 2-2 and the inside of the non-standard titanium alloy pipe 9 and the gap between the retaining ring 2-3 and the inside of the non-standard titanium alloy pipe 9, it is convenient for installation, and the outer O-ring 2-4 needs to be higher than the retaining ring 2-3, ensuring the sealing effect.

[0049] In this embodiment, the retaining ring 2-3 is made of polytetrafluoroethylene, and the outer O-ring 2-4 and the inner O-ring 2-7 are both made of rubber, and their cross-sections are rectangular. By controlling the material of the retaining ring 2-3, when it contacts the inner wall of the non-standard titanium alloy pipe 9, it does not cause damage to the inner wall of the non-standard titanium alloy pipe 9. By controlling the materials of the outer O-ring 2-4 and the inner O-ring 2-7, the contact area with the inner wall of the non-standard titanium alloy pipe 9 is increased, playing a good sealing role, and it cannot be too soft, with a hardness between 70 and 90. Its cross-section is rectangular. This sealing ring should have a certain amount of deformation and sufficient strength. The O-ring is deformed by the sealing pressure ring made of polytetrafluoroethylene to generate a sealing force.

[0050] In this embodiment, an exhaust port is installed at the opening of the exhaust hole 1-1, and a liquid filling interface is installed at the opening of the liquid injection hole 1-2. By setting the liquid filling interface, it can be connected to a pressure testing device during the hydraulic test to inject high-pressure liquid from this port. By setting the exhaust port, air in the pipe can be discharged during the liquid filling process. When a continuous liquid column flows out, a pressure sensor is connected to measure the pressure.

[0051] During actual use, it includes the following steps:

[0052] Step 1: After protecting the head of the threaded connecting rod 1 with a rubber pad, it is sent into the non-standard titanium alloy pipe 9 through a crane. Pay attention to clearly marking the exhaust through hole 1-3 and the liquid injection through hole 1-4. The rubber pad remains inside the non-standard titanium alloy pipe 9 to separate the threaded connecting rod 1 from the non-standard titanium alloy pipe 9, thereby protecting the surface of the non-standard titanium alloy pipe 9.

[0053] Step 2: Lift one end of the threaded connecting rod 1 sent in Step 1 through a crane, and assemble the first flange sealing component 2 at the other end. After the assembly is completed, then assemble the second flange sealing component 3 at the other end.

[0054] Step 3: Connect and fasten the fastening sleeve 5 to the side of the second flange sealing component 3 assembled in Step 2 through the second fixing bolt, and fasten the first flange sealing component 2 and the second flange sealing component 3.

[0055] Step 4: Fix the first flange sealing component 2 fastened in Step 3 through the first end nut 4, and install the first fixing bolt 8. Install the axial positioning sleeve 6 on the side of the second flange sealing component 3 and the fastening sleeve 5 fastened in Step 3, and limit it through the second end nut 7 to obtain the device to be tested.

[0056] Step 5: Lift the device to be tested obtained in Step 4 into the hydraulic test protection area.

[0057] Step 6: After Step 5 is completed, connect the liquid injection hole 1-2 side of the device to be tested to a liquid pipe for liquid injection, and lift the other end by a crane at a certain angle to exhaust air.

[0058] Step 7: After Step 6 is completed, when a continuous liquid column flows out from the exhaust hole 1-1, connect the exhaust hole 1-1 to a pressure sensor, and then fill the liquid injection hole 1-2 with high-pressure liquid. Personnel evacuate and start the hydraulic test.

[0059] The above is only a preferred embodiment of the present invention, and it does not impose any limitations on the present invention. Any simple modification, change, and equivalent change made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A non-standard titanium alloy pipe quick-release hydraulic test sealing device, characterized in that: The device comprises a threaded connecting rod (1), wherein both ends of the threaded connecting rod (1) are respectively provided with an exhaust hole (1-1) and a liquid injection hole (1-2); the threaded connecting rod (1) is also provided with an exhaust through hole (1-3) connected to the bottom of the exhaust hole (1-1) and a liquid injection through hole (1-4) connected to the bottom of the liquid injection hole (1-2); one end of the threaded connecting rod (1) provided with the exhaust hole (1-1) is sleeved with a first flange sealing component (2), and the other end is sleeved with a second flange sealing component (3) having the same structure as the first flange sealing component (2); a first end nut (4) is arranged beside the first flange sealing component (2), and a fastening sleeve (5), an axial positioning sleeve (6) and a second end nut (7) are sequentially arranged beside the second flange sealing component (3).

2. A non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 1, characterized in that: The first flange sealing component (2) comprises a flange sealing seat (2-1), a protrusion (2-2) is arranged on the flange sealing seat (2-1), two retaining rings (2-3) are matched next to the protrusion (2-2), and the two retaining rings (2-3) are clamped with external O-type sealing rings (2-4), and the flange sealing seat (2-1) is also provided with a flange cover (2-5) and a fastening bolt (2-6) for fixing the retaining ring (2-3), and a groove is arranged on the side of the flange sealing seat (2-1) that contacts the threaded connecting rod (1), and an internal O-type sealing ring (2-7) is clamped in the groove.

3. The non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 1 is characterized in that: The threaded connecting rod (1) comprises, from left to right, a first threaded section (1-5), a sealing section (1-6), a liquid injection and exhaust section (1-7), an adjusting section (1-8) and a second threaded section (1-9); the outer diameter of the liquid injection and exhaust section (1-7) is greater than that of the sealing section (1-6) and the adjusting section (1-8); the outer diameters of the sealing section (1-6) and the adjusting section (1-8) are greater than those of the first threaded section (1-5) and the second threaded section (1-9); and the exhaust through hole (1-3) and the liquid injection through hole (1-4) are both located in the liquid injection and exhaust section (1-7).

4. A non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 3, characterized in that: The first end nut (4) is connected to the first threaded section (1-5) through a threaded seal, the first flange sealing component (2) is mounted on the sealing section (1-6), the second flange sealing component (3), the fastening sleeve (5) and the axial positioning sleeve (6) are all mounted on the adjustment section (1-8), and the second end nut (7) is connected to the second threaded section (1-9) through a threaded seal.

5. The non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 1, characterized in that: The first end nut (4) is connected to the first flange sealing component (2) via a first fixing bolt (8), and the fastening sleeve (5) is connected to the second flange sealing component (3) via a second fixing bolt.

6. The non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 2, characterized in that: The gap between the protrusion (2-2) and the inside of the non-standard titanium alloy tube (9) is 6 mm to 12 mm, and the gap between the retaining ring (2-3) and the inside of the non-standard titanium alloy tube (9) is 4 mm to 6 mm.

7. The non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 2, characterized in that: The retaining ring (2-3) is made of polytetrafluoroethylene, and the outer O-ring (2-4) and the inner O-ring (2-7) are both made of rubber, and their cross sections are rectangular.

8. The non-standard titanium alloy pipe quick-release hydraulic test sealing device according to claim 1, characterized in that: An exhaust port is installed at the opening of the exhaust hole (1-1), and a liquid filling interface is installed at the opening of the liquid injection hole (1-2).

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