Pressure-bearing component interface structure convenient for pressure test plugging and pressure-bearing component

Abstract

The utility model relates to the technical field of pressure-bearing component interface structures, in particular to a pressure-bearing component interface structure convenient for pressure test plugging and a pressure-bearing component, the interface structure comprises a joint and a pressure test tool matched with the joint; the connector comprises a first section and a second section which are connected in a conducting mode, the first section of the connector is connected with the pressure bearing component in a conducting mode, and the second section of the connector is provided with a bell and spigot used for assembling a connecting pipe; the pressure test tool is detachably connected with the joint and is used for plugging the second section of the joint before the connecting pipe is assembled in the bell and spigot; and a sealing piece is arranged between the pressure test tool and the second section of the joint. According to the pressure-bearing component interface structure convenient for pressure test plugging, the problem that plugging is inconvenient when an existing socket welding head is subjected to a pressure test can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-bearing component interface structures, in particular to a pressure-bearing component interface structure and a pressure-bearing component that are convenient for pressure testing and plugging. Background Technique

[0002] In industrial fields such as pressure vessels, pressure pipelines, and fluid transportation, some process branch interfaces with special functions need to be set on the pressure-bearing components themselves. For example: pressure measuring points, temperature measuring points, sampling interfaces, detection interfaces, sewage discharge interfaces, venting interfaces, instrument auxiliary interfaces, liquid level gauge interfaces, etc. To achieve different functions, these interfaces need to meet a variety of requirements. For example: interfaces suitable for connecting pipes of different materials, interfaces that require thickness transition due to the thickness difference between the pressure-bearing component and the pipe, interfaces that require strength transition between the pressure-bearing component and the pipe, interfaces that need to be transitioned due to the structure of the pressure-bearing component, interfaces for reinforcement, interfaces affected by temperature and vibration stresses, etc.

[0003] The prior art usually uses a socket weld joint as an interface to make a transition between the pipe and the pressure-bearing component.

[0004] When assembling the pipe with the socket weld joint, one end of the socket weld joint is welded to the pressure-bearing component by using an inserted fillet weld, and the other end of the socket weld joint is welded to the pipe by using a fillet weld or brazing.

[0005] When performing a pressure test before assembling the pipe with the socket weld joint, the socket weld joint needs to be plugged. The prior art usually welds the two ends of the short pipe to the socket weld joint and the pipe cap respectively by using a fillet weld or brazing to achieve the plugging of the socket weld joint.

[0006] After the pressure test, the plugging structure needs to be removed. The existing removal methods include:

[0007] (1) Cutting the short pipe between the pipe cap and the socket weld joint, and then welding the assembled pipe to the short pipe later;

[0008] (2) For brazing, the short pipe and the pipe cap can be removed by heating and melting the weld metal between the socket weld joint and the short pipe.

[0009] The existing removal methods have the following defects:

[0010] (1) When removing the short pipe and the pipe cap by cutting the short pipe, the removed pipe cap and part of the short pipe cannot be reused, resulting in material waste; to facilitate the assembly of the pipe after the pressure test, the cutting position of the short pipe also needs to be manually trimmed and polished, increasing labor costs; multiple processes such as cutting, grinding, and welding of the assembled pipe for the short pipe may damage the welds at both ends of the socket weld joint, increasing the risk of weld cracking failure and medium leakage;

[0011] (2)The short pipe and the pipe cap are removed by heating and melting the weld bead, and the residual brazing filler metal on the wall surface of the socket weld joint needs to be polished and cleaned. It is difficult to polish and clean the residual brazing filler metal, and the requirements for workers' operation are relatively high. The metal chips generated during the polishing process are likely to enter the inside of the pressure-bearing component, causing pollution. After the socket weld joint is polished and cleaned, the internal forming quality of the interface is poor, and the surface cleanliness is poor, which has a great impact on the welding quality of the subsequent assembled pipe, increasing the probability of weld leakage. Summary of the Invention

[0012] The purpose of the present invention is to provide an interface structure of a pressure-bearing component and a pressure-bearing component that are convenient for pressure test plugging, which can solve the problem that the existing socket weld joint is inconvenient to plug during the pressure test.

[0013] To achieve the above purpose, the present invention provides the following technical solutions:

[0014] In the first aspect, the present invention provides an interface structure of a pressure-bearing component that is convenient for pressure test plugging, including a joint and a pressure test tooling that is matched with the joint; the joint includes a first section and a second section that are conductively connected, the first section of the joint is conductively connected to the pressure-bearing component, and the second section of the joint is provided with a socket for assembling a pipe; the pressure test tooling is detachably connected to the joint and is used to plug the second section of the joint before assembling the pipe in the socket; a sealing member is provided between the pressure test tooling and the second section of the joint.

[0015] Combined with the first aspect, further, the thickness of the first section of the joint and the groove for connecting the first section to the pressure-bearing component are selected according to the structural characteristics, the pressure and temperature borne, the vibration and stress requirements of the assembled pipe of the pressure-bearing component.

[0016] Combined with the first aspect, further, the thickness of the first section of the joint meets the functions of strength transition, structural transition and reinforcement.

[0017] Combined with the first aspect, further, the pressure test tooling is threadedly connected to the joint.

[0018] Combined with the first aspect, furthermore, the thread is selected as G thread or M thread or UNF thread according to the use conditions.

[0019] Combined with the first aspect, further, the first section of the joint is provided with an internal thread, the pressure test tooling is a T-shaped pressure test tooling, the lower limb of the T-shaped pressure test tooling is provided with an external thread that matches the internal thread of the first section of the joint, and the two wings of the T-shaped pressure test tooling are provided with grooves corresponding to the ports of the second section of the joint, and a sealing gasket is provided in the grooves.

[0020] In combination with the first aspect, further, an external thread is provided on the first or second section of the joint. The pressure testing tooling is a trough-shaped structure with an opening facing the socket. An internal thread matching the external thread on the first or second section of the joint is provided on the side wall of the trough-shaped structure. A sealing gasket is provided between the inner wall of the trough-shaped structure and the port of the second section of the joint.

[0021] In combination with the first aspect, further, the pressure testing tooling and the joint are connected by a clamp.

[0022] In combination with the first aspect, further, a first groove corresponding to the clamp is provided on the outer wall of the first or second section of the joint. The pressure testing tooling is a trough-shaped structure with an opening facing the socket. A second groove corresponding to the clamp is provided on the outer wall of the trough-shaped structure. The clamp tightens the trough-shaped structure and the joint through the first groove and the second groove. A sealing gasket is provided between the inner wall of the clamp and the trough-shaped structure and the joint.

[0023] In combination with the first aspect, further, the inner diameter of the first section of the joint is smaller than the inner diameter of the second section of the joint.

[0024] In combination with the first aspect, further, the connecting pipe extends into the socket for assembly with the joint, and the port of the second section of the joint is welded to the outer wall of the connecting pipe.

[0025] In combination with the first aspect, further, the connecting pipe is sleeved outside the socket for assembly with the joint, and the port of the connecting pipe is welded to the outer wall of the joint.

[0026] In combination with the first aspect, further, the welding is carried out by fusion welding or brazing.

[0027] In the second aspect, the present invention provides a pressure-bearing component, and the pressure-bearing component is provided with a pressure-bearing component interface structure for facilitating pressure testing and plugging as described in any item of the first aspect.

[0028] In combination with the second aspect, further, the pressure-bearing component is a pressure vessel or a pressure pipeline or is used for fluid transportation.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] The pressure-bearing component interface structure for facilitating pressure testing and plugging provided by the present invention has a detachable connection between the pressure testing tooling and the joint, and a sealing member is provided between the pressure testing tooling and the second section of the joint. When performing a pressure test on the joint before assembling the connecting pipe into the socket, only by connecting the pressure testing tooling and the joint and cooperating with the sealing member, the second section of the joint can be plugged, and the plugging method is simple and convenient.

[0031] After the pressure test is completed, it is not only easy and quick to remove the pressure test tooling and seals, but also there is no damage to the joints and sockets.

[0032] The pipe is assembled by means of socket and splice, which is simple to assemble and does not require additional connectors or tools, thereby reducing assembly time and cost and reducing production difficulty.

[0033] When assembling the pipe, welding or brazing the pipe and the joint can effectively ensure the sealing of the welding and reduce the risk of leakage. During the welding process, the weld and the joint form an integrated structure, which can improve the overall strength of the interface structure and enable the interface structure to withstand greater pressure and tension.

[0034] The first section of the joint can select a suitable thickness and a groove form for connecting with the pressure-bearing component according to the structural characteristics of the pressure-bearing component, the pressure and temperature it bears, the vibration and stress requirements of the assembly pipe, etc., and has high practicality.

[0035] The pressure-bearing component interface structure provided by the utility model and convenient for pressure testing and plugging can be applied to industrial fields such as pressure vessels, pressure pipelines, fluid transportation, etc., has a simple structure and a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the socket welding joint assembly pipe provided by the embodiment of the utility model;

[0037] Figure 2 It is a schematic diagram of the pressure test and plugging of the socket welding joint provided by the embodiment of the utility model;

[0038] Figure 3 Schematic diagram of a joint of an interface structure of a pressure-bearing component that is convenient for pressure testing and plugging provided by an embodiment of the utility model, wherein (a) represents a joint with an internal thread in the first section, (b) represents a joint with an external thread in the second section, (c) represents a joint with an external thread in the first section, and (d) represents a joint for clamp connection;

[0039] Figure 4 Schematic diagram of pressure test and plugging of the interface structure of the pressure-bearing component that is convenient for pressure test and plugging provided by the embodiment of the utility model, wherein (a) represents pressure test and plugging of the joint with internal threads in the first section, (b) represents pressure test and plugging of the joint with external threads in the second section, (c) represents pressure test and plugging of the joint with external threads in the first section, and (d) represents pressure test and plugging of the joint used for clamp connection;

[0040] Figure 5 It is a schematic diagram of an assembly pipe of an interface structure of a pressure-bearing component that is convenient for pressure testing and plugging provided by an embodiment of the utility model;

[0041] In the figure: 1. Pressure-bearing component; 2. Socket-weld joint; 3. Nozzle; 4. Stub pipe; 5. Pipe cap; 6. Joint; 7. Socket; 8. Pressure test tooling; 9. Gasket; 10. Clamp; 11. First groove; 12. Second groove; 13. First weld seam; 14. Second weld seam; 15. Third weld seam; 16. Fourth weld seam; 17. Fifth weld seam. Detailed implementation manners

[0042] The technical solution of the present utility model will be further described in detail below in conjunction with the specific implementation manners.

[0043] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model. Without conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0044] In the prior art, when assembling the nozzle 3 on the socket-weld joint 2, as Figure 1 shown, one end of the socket-weld joint 2 is welded to the pressure-bearing component 1 by inserting fillet weld fusion welding to form the first weld seam 13, and the other end of the socket-weld joint 2 is welded to the nozzle 3 by fillet weld fusion welding or brazing to form the second weld seam 14.

[0045] Or, when performing a pressure test before assembling the nozzle 3 on the socket-weld joint 2, as Figure 2 shown, both ends of the stub pipe 4 are welded to the socket-weld joint 2 and the pipe cap 5 by fillet weld fusion welding or brazing to form the third weld seam 15 to realize the plugging of the socket-weld joint 2.

[0046] After the pressure test, the stub pipe 4 between the pipe cap 5 and the socket-weld joint 2 is cut off, and then the nozzle 3 is assembled and welded to the stub pipe 4; or, for the case where the third weld seam 15 is brazed, the stub pipe 4 and the pipe cap 5 can be removed by heating and melting the weld metal between the stub pipe 4 of the socket-weld joint 2.

[0047] When removing the stub pipe 4 and the pipe cap 5 by cutting the stub pipe 4, the cut-off pipe cap 5 and part of the stub pipe 4 cannot be reused, resulting in material waste; to facilitate the assembly of the nozzle 3 after the pressure test, the cutting position of the stub pipe 4 also needs to be manually trimmed and polished, increasing the labor cost; multiple processes such as cutting, grinding of the stub pipe 4 and welding of the assembled nozzle 3 may damage the first weld seam 13 and the third weld seam 15 at both ends of the socket-weld joint 2, increasing the risk of weld cracking failure and medium leakage.

[0048] The short pipe 4 and the pipe cap 5 are removed by heating and melting the welding bead. The residual brazing filler metal on the wall surface of the socket-weld joint 2 needs to be polished and cleaned. It is difficult to polish and clean the residual brazing filler metal, and the requirements for workers' operations are relatively high. The metal chips generated during the polishing process are likely to enter the inside of the pressure-bearing component 1, causing pollution. After the socket-weld joint 2 is polished and cleaned, the internal forming quality of the interface is poor, and the surface cleanliness is poor, which has a great impact on the welding quality of the subsequent assembled connecting pipe 3 and increases the probability of weld leakage.

[0049] Embodiment 1:

[0050] This embodiment provides an interface structure of a pressure-bearing component that is convenient for pressure testing and plugging, as Figure 3 , Figure 4 shown, including a joint 6 and a pressure testing tooling 8 that is matched with the joint 6. The joint 6 includes a first section and a second section that are conductively connected. The inner diameter of the first section of the joint 6 is smaller than the inner diameter of the second section of the joint 6. The first section of the joint 6 is conductively connected to the pressure-bearing component 1, and a socket 7 for assembling the connecting pipe 3 is provided on the second section of the joint 6. The pressure testing tooling 8 is detachably connected to the joint 6 and is used to plug the second section of the joint 6 before the connecting pipe 3 is assembled into the socket 7. A seal is provided between the pressure testing tooling 8 and the second section of the joint 6.

[0051] In this embodiment, the thickness of the first section of the joint 6, as well as the groove for connecting the first section to the pressure-bearing component 1, can be specifically selected according to the structural characteristics of the pressure-bearing component 1, the pressure and temperature it bears, the vibration and stress of the assembled connecting pipe 3, etc.

[0052] In this embodiment, the thickness of the first section of the joint 6 satisfies functions such as strength transition, structural transition, and reinforcement.

[0053] For the interface structure of the pressure-bearing component that is convenient for pressure testing and plugging provided in this embodiment, the pressure testing tooling 8 is detachably connected to the joint 6, and a seal is provided between the pressure testing tooling 8 and the second section of the joint 6. When a pressure test is performed on the joint 6 before the connecting pipe 3 is assembled into the socket 7, only the pressure testing tooling 8 needs to be connected to the joint 6, and with the cooperation of the seal, the second section of the joint 6 can be plugged. The plugging method is simple and convenient. After the pressure test is completed, not only is it easy and quick to remove the pressure testing tooling 8 and the seal, but also there is no damage to the joint 6 and the socket 7. By inserting the connecting pipe 3 in a socket-weld manner, the assembly is simple, no additional connecting parts or tools are required, the assembly time and assembly cost can be reduced, and the production difficulty can be reduced. The first section of the joint 6 can select an appropriate thickness and the groove form for connecting to the pressure-bearing component 1 according to the structural characteristics of the pressure-bearing component 1, the pressure and temperature it bears, the vibration and stress of the assembled connecting pipe 3, etc., and has high practicability.

[0054] Embodiment 2:

[0055] This embodiment provides a pressure-bearing component interface structure that is convenient for pressure testing and sealing. On the basis of Embodiment 1, the pressure testing tool 8 is threadedly connected to the joint 6.

[0056] In this embodiment, the thread can be specifically selected according to the use conditions, such as: G thread, M thread, UNF thread, etc.

[0057] Embodiment 3:

[0058] This embodiment provides a pressure-bearing component interface structure that is convenient for pressure testing and plugging. Based on Embodiment 2, Figure 3 As shown in (a), the first section of the connector 6 is provided with an internal thread. Figure 4 As shown in (a), the pressure test fixture 8 is a T-type pressure test fixture. The lower limb of the T-type pressure test fixture is provided with an external thread matching the internal thread of the first section of the connector 6. The two wings of the T-type pressure test fixture are provided with grooves corresponding to the ports of the second section of the connector 6, and a sealing gasket 9 is provided in the groove.

[0059] In this embodiment, the grooves on the two wings of the T-shaped pressure test tool are arranged opposite to the port of the second section of the joint 6. As the lower limb of the T-shaped pressure test tool is extended from the second section of the joint 6 and tightened, the sealing gasket 9 arranged in the grooves on the two wings of the T-shaped pressure test tool gradually presses the port of the second section of the joint 6, thereby achieving the sealing of the second section of the joint 6.

[0060] When the pressure test of the joint 6 is carried out before the socket 7 is assembled with the pipe 3, the lower limb of the T-type pressure test fixture is inserted from the second section of the joint 6, and the internal thread of the first section of the joint 6 is matched with the external thread of the lower limb of the T-type pressure test fixture. The T-type pressure test fixture is tightened relative to the joint 6, and then the sealing gasket 9 arranged in the grooves on the two wings of the T-type pressure test fixture is used to seal the second section of the joint 6.

[0061] After the pressure test is completed, the lower limb of the T-type pressure test fixture is unscrewed from the joint 6.

[0062] Embodiment 4:

[0063] This embodiment provides a pressure-bearing component interface structure that is convenient for pressure testing and plugging. Based on Embodiment 2, Figure 3 As shown in (b), the second section of the connector 6 is provided with external threads, such as Figure 4 As shown in (b), the pressure test fixture 8 is a groove structure with its opening facing the socket 7. The side wall of the groove structure is provided with an internal thread matching the external thread of the second section of the joint 6. A sealing gasket 9 is provided between the inner wall of the groove structure and the port of the second section of the joint 6.

[0064] In this embodiment, a sealing gasket 9 is provided in a circular shape at the top wall of the groove-shaped structure, exactly opposite to the port of the second section of the joint 6. As the groove-shaped structure is tightened downward from the second section of the joint 6, the sealing gasket 9 provided on the top wall of the groove-shaped structure gradually compresses the port of the second section of the joint 6, realizing the sealing of the second section of the joint 6.

[0065] When a pressure test is performed on the joint 6 before the socket 7 is assembled with the connecting pipe 3, the groove-shaped structure is sleeved on the second section of the joint 6 and rotated downward. Through the cooperation of the external thread of the second section of the joint 6 and the internal thread of the side wall of the groove-shaped structure, the groove-shaped structure is tightened relative to the joint 6. Then, in combination with the sealing gasket 9 provided on the top wall of the groove-shaped structure, the second section of the joint 6 is sealed.

[0066] After the pressure test is completed, the groove-shaped structure is unscrewed from the second section of the joint 6.

[0067] Embodiment 5:

[0068] This embodiment provides a pressure-bearing component interface structure facilitating pressure test sealing. On the basis of Embodiment 2, as shown in (c) therein, the first section of the joint 6 is provided with an external thread. As shown in (c) therein, the pressure test tooling 8 is a groove-shaped structure with an opening facing the socket 7. The side wall of the groove-shaped structure is provided with an internal thread matching the external thread of the first section of the joint 6, and a sealing gasket 9 is arranged between the inner wall of the groove-shaped structure and the port of the second section of the joint 6. Figure 3 as shown in (c) therein, the first section of the joint 6 is provided with an external thread. Figure 4 as shown in (c) therein, the pressure test tooling 8 is a groove-shaped structure with an opening facing the socket 7. The side wall of the groove-shaped structure is provided with an internal thread matching the external thread of the first section of the joint 6, and a sealing gasket 9 is arranged between the inner wall of the groove-shaped structure and the port of the second section of the joint 6.

[0069] In this embodiment, a sealing gasket 9 is provided in a circular shape at the top wall of the groove-shaped structure, exactly opposite to the port of the second section of the joint 6. As the groove-shaped structure is tightened downward along the external thread of the first section of the joint 6, the sealing gasket 9 provided on the top wall of the groove-shaped structure gradually compresses the port of the second section of the joint 6, realizing the sealing of the second section of the joint 6.

[0070] When a pressure test is performed on the joint 6 before the socket 7 is assembled with the connecting pipe 3, the groove-shaped structure is sleeved on the second section of the joint 6 and rotated downward along the external thread of the first section of the joint 6. Through the cooperation of the external thread of the first section of the joint 6 and the internal thread of the side wall of the groove-shaped structure, the groove-shaped structure is tightened relative to the joint 6. Then, in combination with the sealing gasket 9 provided on the top wall of the groove-shaped structure, the second section of the joint 6 is sealed.

[0071] After the pressure test is completed, the groove-shaped structure is unscrewed along the external thread of the first section of the joint 6.

[0072] Embodiment 6:

[0073] This embodiment provides a pressure-bearing component interface structure facilitating pressure test sealing. On the basis of Embodiment 1, the pressure test tooling 8 and the joint 6 are connected by a clamp 10.

[0074] Embodiment 7:

[0075] This embodiment provides an interface structure of a pressure-bearing component that facilitates pressure testing and plugging. On the basis of Embodiment 6, as Figure 3 shown in (d) therein, a first groove 11 corresponding to the clamp 10 is provided on the outer wall of the first or second section of the joint 6. As Figure 4 shown in (d) therein, the pressure testing tooling 8 is a trough-shaped structure with an opening facing the socket 7. A second groove 12 corresponding to the clamp 10 is provided on the outer wall of the trough-shaped structure. The clamp 10 clamps the trough-shaped structure and the joint 6 tightly through the first groove 11 and the second groove 12. A sealing gasket 9 is provided between the inner wall of the clamp 10 and the trough-shaped structure and the joint 6.

[0076] In this embodiment, the side wall of the trough-shaped structure is directly opposite to the side wall of the second section of the joint 6, and the outer diameter of the trough-shaped structure is the same as the outer diameter of the second section of the joint 6. When the clamp 10 clamps the trough-shaped structure and the joint 6 tightly through the first groove 11 and the second groove 12, the sealing gasket 9 between the inner wall of the clamp 10 and the trough-shaped structure and the joint 6 closely adheres to the outer walls of the trough-shaped structure and the joint 6, sealing the trough-shaped structure and the joint 6, and realizing the plugging of the second section of the joint 6.

[0077] When performing a pressure test on the joint 6 before assembling the connecting pipe 3 into the socket 7, place the trough-shaped structure with the opening facing the socket 7 at the port of the second section of the joint 6, clamp the clamp 10 on the first groove 11 and the second groove 12, and tighten it. Then, in cooperation with the sealing gasket 9 provided between the inner wall of the clamp 10 and the trough-shaped structure and the joint 6, plug the second section of the joint 6.

[0078] After the pressure test is completed, loosen the clamp 10, remove it from the first groove 11 and the second groove 12, and remove the trough-shaped structure from the joint 6.

[0079] Embodiment 8:

[0080] This embodiment provides an interface structure of a pressure-bearing component that facilitates pressure testing and plugging. On the basis of Embodiment 1, as Figure 5 shown in (a) therein, the connecting pipe 3 extends into the socket 7 for assembly with the joint 6, and the port of the second section of the joint 6 is welded to the outer wall of the connecting pipe 3.

[0081] In this embodiment, as Figure 5 shown in (a) therein, the outer diameter of the connecting pipe 3 matches the inner diameter of the socket 7.

[0082] When assembling the connecting pipe 3, extend the connecting pipe 3 into the socket 7. The flange in the socket 7 supports the connecting pipe 3 to fix the connecting pipe 3, and weld the port of the second section of the joint 6 to the outer wall of the connecting pipe 3 to form the fourth weld 16.

[0083] Embodiment 9:

[0084] This embodiment provides an interface structure of a pressure-bearing component that is convenient for pressure testing and plugging. On the basis of Embodiment 1, as Figure 5 shown in (b) of

[0085] In this embodiment, as Figure 5 shown in (b) of

[0086] When assembling the connecting pipe 3, the connecting pipe 3 is sleeved outside the socket 7, and the flange inside the connecting pipe 3 catches the port of the second section of the joint 6 to fix the connecting pipe 3. Then, the port of the connecting pipe 3 is welded to the outer wall of the joint 6 to form the fifth weld seam 17.

[0087] Embodiment 10:

[0088] This embodiment provides an interface structure of a pressure-bearing component that is convenient for pressure testing and plugging. On the basis of Embodiment 8 or Embodiment 9, fusion welding or brazing is used for welding.

[0089] In this embodiment, according to the inner diameter and outer diameter of the socket 7, the inner diameter and outer diameter of the connecting pipe 3, and the requirements of the welding process, circumferential fusion welding or brazing is used to weld the connecting pipe 3 and the joint 6.

[0090] For the interface structure of the pressure-bearing component that is convenient for pressure testing and plugging provided in this embodiment, when assembling the connecting pipe 3, fusion welding or brazing is used to weld the connecting pipe 3 and the joint 6, which can effectively ensure the welding tightness and reduce the risk of leakage. During the welding process, the fourth weld seam 16 and the fifth weld seam 17 form an integral structure with the joint 6, which can improve the overall strength of the interface 6 structure, enabling the interface 6 structure to withstand greater pressure and tension.

[0091] Embodiment 11:

[0092] This embodiment provides a pressure-bearing component 1, which is equipped with an interface structure of a pressure-bearing component that is convenient for pressure testing and plugging provided in any one of Embodiments 1 to 10.

[0093] In this embodiment, the pressure-bearing component 1 can be a pressure vessel, or a pressure pipeline, and can also be used for fluid transportation.

[0094] The interface structure of the pressure-bearing component that is convenient for pressure testing and plugging provided in the embodiments of the present application is applicable in industrial fields such as pressure vessels, pressure pipelines, and fluid transportation. It has a simple structure and wide applications.

[0095] The above are only the preferred embodiments of the present utility model. It should be noted that for those skilled in the art, without departing from the concept of the present utility model, several modifications and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicability of the patent.

Claims

1. A pressure-bearing component interface structure facilitating pressure testing and plugging, characterized in that It includes a joint (6) and a pressure test tooling (8) that matches the joint (6); the joint (6) includes a first section and a second section that are conductively connected, the first section of the joint (6) is conductively connected to the pressure-bearing component (1), and a socket (7) for assembling a connecting pipe (3) is provided on the second section of the joint (6); the pressure test tooling (8) is detachably connected to the joint (6) and is used to block the second section of the joint (6) before the connecting pipe (3) is assembled into the socket (7); a seal is provided between the pressure test tooling (8) and the second section of the joint (6).

2. The pressure-bearing component interface structure facilitating pressure testing and plugging according to claim 1, wherein, The pressure test tooling (8) is threadedly connected to the joint (6).

3. The pressure test and plugging convenient pressure-bearing component interface structure according to claim 2, characterized in that, The first section of the joint (6) is provided with an internal thread, the pressure test tooling (8) is a T-shaped pressure test tooling, the lower limb of the T-shaped pressure test tooling is provided with an external thread that matches the internal thread of the first section of the joint (6), and grooves corresponding to the ports of the second section of the joint (6) are provided on the two wings of the T-shaped pressure test tooling, and a gasket (9) is provided in the grooves.

4. The pressure test and plugging facilitating pressure-bearing component interface structure according to claim 2, wherein, The first section or the second section of the joint (6) is provided with an external thread, the pressure test tooling (8) is a trough-shaped structure with an opening facing the socket (7), the side wall of the trough-shaped structure is provided with an internal thread that matches the external thread of the first section or the second section of the joint (6), and a gasket (9) is provided between the inner wall of the trough-shaped structure and the port of the second section of the joint (6).

5. The pressure test and plugging facilitating pressure-bearing component interface structure according to claim 1, characterized in that, The pressure test tooling (8) is connected to the joint (6) by a clamp (10).

6. The pressure-bearing component interface structure facilitating pressure testing and plugging according to claim 5, wherein A first groove (11) corresponding to the clamp (10) is provided on the outer wall of the first section or the second section of the joint (6), the pressure test tooling (8) is a trough-shaped structure with an opening facing the socket (7), a second groove (12) corresponding to the clamp (10) is provided on the outer wall of the trough-shaped structure, the clamp (10) clamps the trough-shaped structure and the joint (6) tightly through the first groove (11) and the second groove (12), and a gasket (9) is provided between the inner wall of the clamp (10) and the trough-shaped structure and the joint (6).

7. The pressure test and plugging facilitating pressure-bearing component interface structure according to claim 1, characterized in that The inner diameter of the first section of the joint (6) is smaller than the inner diameter of the second section of the joint (6).

8. A pressure-bearing component, characterized in that, The pressure-bearing component (1) is equipped with a pressure-bearing component interface structure for facilitating pressure test blocking as described in any one of claims 1 to 7.

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