CN115683473A - Pressure pipeline testing equipment - Google Patents

Abstract

The application discloses pressure pipeline check out test set relates to pipeline inspection technical field. This application includes pipeline pressure testing pump, and one side of pipeline pressure testing pump is installed and is born the frame, bear vertical slidable mounting on the frame and have the platform of placing that is used for placing pipeline under pressure, place the platform and pass through the driving piece drive, bear and install the shutoff board on the frame, the side orientation of shutoff board place the platform, it is used for laminating with pipeline under pressure one end, the circular array of shutoff board periphery side is constructed and is had a plurality of links. Compared with the prior art, the position that moves through drive assembly control sliding seat, indirect change sealing plate's position, then make sealing plate press through adjusting part and hold on the ring flange, the ring flange of cooperation customization can detect the metal pressure pipeline of different diameters, need not customize two ring flanges, also need not install blast pipe and connecting pipe on the ring flange of customization, convenience more during the use.

Description

Pressure pipeline testing equipment

technical field

The present application relates to the technical field of pipeline detection, in particular to pressure pipeline detection equipment.

Background technique

When processing metal pressure pipes, some pressure pipes are processed separately from the flange due to the larger diameter of the pipe body and thinner pipe thickness. After processing, the flange is welded to the end of the pipe. , so that the metal pressure pipe is conveniently connected with other pipes, so the pressure pipe produced by this processing technology needs to be tested for internal pressure. The industrial underground water pipe is made by this processing method, and the processed metal pressure The two ends of the metal pressure pipe are blocked by a special closed flange plate. One of the closed flange plates is equipped with a connecting pipe that communicates with the metal pressure pipe, and the other flange plate is equipped with an exhaust pipe. A ball valve is installed on the pipe, and then the pressure pipe of the pipe pressure test pump is connected with the connecting pipe, and water is injected into the metal pressure pipe through the pipe pressure test pump until the inside of the metal pressure pipe to be tested is filled with water, and then the ball valve is closed. At this time, the pipeline pressure test pump continues to inject water into the metal pressure pipeline to be tested. When the pressure on the pipeline pressure pump reaches the corresponding pressure value, then observe whether there is water leakage at the weld between the pipeline and the flange, so as to judge the metal pressure. Whether the pipeline is qualified or not, the existing pipeline pressure pump needs to customize two corresponding closed flange plates when testing pressure pipelines with different diameters, which is inconvenient to test pressure pipelines with different diameters.

Contents of the invention

The purpose of the present application is to provide pressure pipeline detection equipment in order to solve the problems raised in the above background.

The application specifically adopts the following technical solutions in order to achieve the above object:

The pressure pipeline detection equipment includes a pipeline pressure test pump. A bearing frame is installed on one side of the pipeline pressure test pump. A placing platform for placing the pressure pipeline is vertically slidably installed on the bearing frame, and the placing platform is driven by a driving member. A blocking plate is installed on the carrier, one side of the blocking plate is facing the placement table, and it is used to be attached to one end of the pressure pipe. The circular array on the outer peripheral side of the blocking plate has a plurality of connection frame, the connecting frame is slidably installed with a sliding seat along its length direction, the sliding seat is rotatably installed with a sealing plate for pressing and holding on one side of the flange of the pressure pipe, and the sealing plate is installed with An adjustment assembly that drives the rotation of the sealing platen, and a driving assembly that drives a plurality of sliding seats to approach or move away from the axis of the sealing plate synchronously is mounted on the blocking plate, and an L-shaped The exhaust pipe, the horizontal end of the exhaust pipe is connected to the sealing plate and communicates with the inside of the pressure pipe, the other end of the exhaust pipe is vertically upward and is equipped with a water valve, the sealing plate A water inlet pipe communicating with the pressure pipe is communicated with the upper part, and a water pipe joint is installed at the free end of the water inlet pipe.

Further, the drive assembly includes a connecting sleeve coaxially fixed on the side of the blocking plate away from the placement table, the horizontal end of the exhaust pipe is located in the connecting sleeve, and the outer peripheral side of the connecting sleeve rotates A rotating disk is installed, a drive rod is eccentrically hinged between the sliding seat and the rotating disk, and a limiting member for limiting the rotation of the rotating disk is installed on the blocking plate.

Further, the limiting member includes a sliding plate slidably installed on the blocking plate, an arc gear is installed on one side of the sliding plate, and the outer peripheral side of the rotating disc is fitted with a gear meshing with the arc gear. The sliding direction of the sliding plate is towards the axis of the rotating disk, and a threaded rod is rotatably installed on the blocking plate, and the sliding plate is threadedly set on the threaded rod.

Further, the adjustment assembly includes a transmission rod rotatably installed in the connecting sleeve, a linkage is installed between the transmission rod and the sealing platen, when the transmission rod rotates, through the linkage The free ends of the plurality of sealing platens approach or move away from the sealing plate synchronously.

Further, the linkage includes a connecting plate threaded on the transmission rod, a sleeve is hinged in a circular array on the connecting plate, and a drive sleeve is slidably inserted into the free end of the sleeve, The free end of the driving sleeve rod is hinged with a connecting rod, the free end of the connecting rod is connected with the sealing platen, and the locking piece for releasing the limit or limiting its sliding position is installed on the driving sleeve rod.

Further, one side of the sleeve is provided with a slot along its length, and the locking member includes a connecting block configured on one side of the drive sleeve and passing through the slot, and the connecting block slides A driving block is inserted, and two positioning splints are mounted on the driving block for symmetrical rotation, and locking grooves for insertion of the positioning splints are provided on opposite sides of the sleeve along its length direction. An arc-shaped resistance spring is installed between the two positioning splints.

Further, it also includes a pressing plate, the pressing surface of the pressing plate is arc-shaped, a protruding rod is configured in the middle of one side of the pressing plate, and the protruding rod is hinged on the free end of the sealing pressing plate superior.

Further, a sealing rubber pad is installed at the end of the sealing plate that is attached to the pressure pipe.

Further, a connection seat is installed on the carrier, the free end of the transmission rod is rotatably mounted on the connection seat, and an outer hexagon nut is configured on the outer peripheral side of the transmission rod.

Further, the top of the placing table is V-shaped, which is used for placing pressure pipes.

The beneficial effects of the application are as follows:

Compared with the prior art, this application controls the moving position of the sliding seat through the driving assembly, which indirectly changes the position of the sealing pressure plate, and then adjusts the assembly so that the sealing pressure plate is pressed on the flange to match a customized flange Metal pressure pipes of different diameters can be detected by using one plate, without customizing two flanges, and installing exhaust pipes and connecting pipes on the customized flanges, which is more convenient to use.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the present application;

Fig. 2 is a schematic diagram of part of the structure of the application;

Fig. 3 is a partial three-dimensional sectional view in Fig. 2 of the present application;

Fig. 4 is a partial enlarged view of A in Fig. 2 of the present application;

Figure 5 is an enlarged view of the structure at B in Figure 3;

Fig. 6 is a schematic diagram of another perspective of Fig. 2;

Figure 7 is an enlarged view of the structure at C in Figure 6;

Reference signs: 1. Pipeline pressure test pump; 2. Bearing frame; 3. Placement platform; 4. Blocking plate; 5. Connecting frame; 6. Sliding seat; 7. Sealing plate; Rod; 802, linkage; 8021, connecting plate; 8022, sleeve; 8023, driving sleeve rod; 8024, connecting rod; 9, driving assembly; 901, connecting sleeve; 902, rotating disc; 903, driving rod; 10 , exhaust pipe; 11, water valve; 12, limit piece; 1201, sliding plate; 1202, arc gear; 1203, threaded rod; , sealing rubber pad; 16, connecting seat; 17, outer hex nut; 18, water inlet pipe; 19, locking piece; 1901, through groove; 1902, connecting block; 1903, driving block; 1904, positioning splint; 1905, locking groove ; 1906, conflict spring; 20, water pipe joints.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

As shown in Figures 1 to 7, an embodiment of the present application proposes a pressure pipeline detection device, including a pipeline pressure test pump 1, a carrier 2 is installed on one side of the pipeline pressure test pump 1, and the vertical sliding installation on the carrier 2 is useful. The placing platform 3 is used for placing the pressure pipeline, and the placing platform 3 is driven by a driving member. Specifically, four telescopic rods are installed in a rectangular distribution on the bottom of the placing table 3. One end of the telescopic rod is connected to the carrier frame 2, and the driving member is installed on the carrier frame. The hydraulic cylinder on 2, the output end of the hydraulic cylinder is connected to the bottom of the placing table 3, and the blocking plate 4 is installed on the carrier frame 2, and one side of the blocking plate 4 is facing the placing table 3, which is used for bonding with one end of the pressure pipe A circular array structure on the outer peripheral side of the blocking plate 4 has a plurality of connecting frames 5, a sliding seat 6 is installed on the connecting frame 5 slidingly along its length direction, and a sliding seat 6 is rotatably installed on the sliding seat 6 for pressing and holding a flange on the pressure pipe. The sealing platen 7 on the side, the adjusting assembly 8 that drives the sealing platen 7 to rotate is installed on the blocking plate 4, and the driving assembly 9 that drives a plurality of sliding seats 6 synchronously approaching or away from the axis of the blocking plate 4 is installed on the blocking plate 4, An L-shaped exhaust pipe 10 is installed on the blocking plate 4, one end of the horizontal direction of the exhaust pipe 10 is connected with the blocking plate 4 and communicates with the inside of the pressure pipeline, and the other end of the exhaust pipe 10 is vertically upward and is installed with The water valve 11 is connected with the water inlet pipe 18 connected with the pressure pipeline on the blocking plate 4, and the free end of the water inlet pipe 18 is equipped with a water pipe joint 20;

When in use, first place the metal pressure pipe to be detected on the placement table 3, and then start the hydraulic cylinder to move the placement table 3 upward until the metal pressure pipe to be detected is coaxial with the blocking plate 4, and the blocking plate 4 is disc-shaped , and then move the metal pressure pipe to be detected so that one end thereof fits with the blocking plate 4, at this time, the end of the metal pressure pipe to be detected away from the blocking plate 4 can use a custom-made sealing flange plate, and the sealing flange plate does not It is necessary to install the connecting pipe and the exhaust pipe 10, which is convenient for processing and reduces the construction period. After the customized sealing flange plate is fixed to one end of the metal pressure pipe to be tested by bolts, the sliding seat 6 is moved by the driving component 9 at this time, and the sliding seat 6 moves. Drive the position of the sealing platen 7 installed on the sliding seat 6 to change, so that the sealing platen 7 can be pressed on one side of the flange of the metal pressure pipe to be tested during the subsequent rotation, and then the sealing platen 7 can be adjusted by adjusting the assembly 8 Rotate until a plurality of sealing pressure plates 7 are pressed on the flange of the metal pressure pipeline to be tested, so that one end of the flange is in contact with the blocking plate 4, thereby achieving a sealing effect, and then the pressure test pump Connect the pressure pipe to one end of the water inlet pipe 18, and then start the pressure test pump, so that the inside of the metal pressure pipe to be tested is filled with water until water overflows in the exhaust pipe 10, indicating that the air in the metal pressure pipe to be tested has been exhausted. discharge, then close the water valve 11, and the water inlet pipe 18 continues to supply water until the pressure on the pressure test pump reaches the corresponding value. The position of the sealing platen 7 is changed, and then the sealing platen 7 is held on the flange by adjusting the component 8, and a customized flange plate can be used to detect metal pressure pipes of different diameters, and there is no need to customize two The flange plate also does not need to install the exhaust pipe 10 and the connecting pipe on the customized flange plate, which is more convenient during use.

As shown in Figures 1, 5 and 6, in some embodiments, the drive assembly 9 includes a connecting sleeve 901 coaxially fixed on the side of the blocking plate 4 away from the placement table 3, and the horizontal end of the exhaust pipe 10 Located in the connecting sleeve 901, the outer peripheral side of the connecting sleeve 901 is rotatably equipped with a rotating disk 902, and the drive rod 903 is eccentrically hinged between the sliding seat 6 and the rotating disk 902, and the blocking plate 4 is installed with a limiter for limiting the rotation of the rotating disk 902. Position member 12, that is to say, when moving a sliding seat 6, the driving rod 903 hinged on the sliding seat 6 is driven to move when the sliding seat 6 moves, because one end of the driving rod 903 is hinged on the rotating disk 902, so that the rotation The disk 902 rotates, and the rotating disk 902 drives several other driving rods 903 to move during the rotation, so that other sliding seats 6 move synchronously, and there is no need to repeatedly move and adjust each sliding seat 6, which is more convenient to use , and then the angle of the rotating disc 902 is limited by the limiting member 12, so that the sliding positions of the plurality of sliding seats 6 can be limited.

As shown in Fig. 1, Fig. 4 and Fig. 6, in some embodiments, the limiting member 12 includes a sliding plate 1201 slidably installed on the blocking plate 4, and one side of the sliding plate 1201 is equipped with an arc gear 1202, which rotates The outer peripheral side of the disk 902 is fitted with a linkage gear 1204 meshing with the arc gear 1202. The sliding direction of the sliding plate 1201 faces the axis of the rotating disk 902. A threaded rod 1203 is installed on the blocking plate 4 for rotation. The sliding plate 1201 is threaded on the threaded On the rod 1203, when the threaded rod 1203 is turned, because the sliding plate 1201 is threadedly engaged with the threaded rod 1203, the sliding plate 1201 will move along the axial direction of the threaded rod 1203 when the threaded rod 1203 is turned, so that the sliding plate 1201 The arc gear 1202 meshes with the interlocking gear 1204, because the arc gear 1202 is installed on the sliding plate 1201 and can only move and cannot rotate, so the interlocking gear 1204 cannot rotate after the arc gear 1202 meshes with the interlocking gear 1204, thereby The rotation angle of the rotating disk 902 is limited.

As shown in Figures 4 and 5, in some embodiments, the adjustment assembly 8 includes a transmission rod 801 rotatably installed in the connecting sleeve 901, and a linkage 802 is installed between the transmission rod 801 and the sealing plate 7, when the transmission rod When 801 rotates, the free ends of multiple sealing platens 7 are synchronously approached or moved away from the sealing plate 4 through the linkage 802, that is to say, when the transmission rod 801 is rotating, the multiple sealing platens 7 can be adjusted by adjusting the assembly 8 Turn at the same time.

As shown in Figure 4, Figure 5 and Figure 7, in some embodiments, the linkage 802 includes a connecting plate 8021 threaded on the transmission rod 801, the circular array on the connecting plate 8021 is hinged with a sleeve 8022, the sleeve The free end of the cylinder 8022 is slidably inserted with a drive sleeve rod 8023, the free end of the drive sleeve rod 8023 is hinged with a connecting rod 8024, the free end of the connection rod 8024 is connected with the sealing pressure plate 7, and the drive sleeve rod 8023 is equipped with a clamp for releasing the limit position. Or the locking piece 19 that limits its sliding position, that is to say, when in use, the locking piece 19 first releases the locking of the sliding position of the drive sleeve rod 8023, and when multiple sliding seats 6 approach or move away from the axial position of the blocking plate 4 synchronously , the sealing platen 7 moves to drive the drive sleeve rod 8023 hinged on the connecting rod 8024 to move, because the drive sleeve rod 8023 and the sleeve 8022 slide and fit and the sleeve 8022 is hinged on the connecting plate 8021, and because the connecting plate 8021 and the connecting plate 8021 are hinged at this time The transmission rod 801 is threaded so that the connecting plate 8021 cannot move, so when the sliding seat 6 moves, the driving sleeve rod 8023 will move along the direction of the sleeve 8022, so that the positions of the plurality of sealing pressure plates 7 are changed. The locking part 19 limits the sliding position of the driving sleeve rod 8023, and then rotates the transmission rod 801, because the transmission rod 801 is threadedly matched with the connection plate 8021, so the rotation of the transmission rod 801 will drive the connection plate 8021 along the axis direction of the transmission rod 801 Move, the connecting plate 8021 is hinged with the sleeve 8022, so when the connecting plate 8021 moves, it will drive the sleeve 8022 to move, and at this time, the sleeve 8022 and the driving sleeve rod 8023 are locked by the locking piece 19, so the rotation angles are consistent and Will not slide each other, so the rotation of the sleeve 8022 makes the drive sleeve rod 8023 rotate, because one end of the drive sleeve rod 8023 is hinged on the connecting rod 8024, and the connecting rod 8024 is connected with the sealing pressure plate 7, so when the connecting plate 8021 moves, The pulling or pushing of the driving sleeve rod 8023 will cause the sealing pressing plate 7 to rotate, so that multiple sealing pressing plates 7 can rotate at the same time, which is more convenient to use.

As shown in Fig. 4, Fig. 6 and Fig. 7, in some embodiments, one side of the sleeve 8022 is provided with a through groove 1901 along its length direction, and the locking member 19 is formed on one side of the driving sleeve rod 8023 and passes through the through groove 1901. The connecting block 1902 of the slot 1901, the connecting block 1902 is slidably inserted with a driving block 1903, and two positioning splints 1904 are mounted on the driving block 1903 for symmetrical rotation, and the opposite sides of the sleeve 8022 are provided with positioning splints along its length direction 1904 is inserted into the locking groove 1905, and an arc-shaped resistance spring 1906 is installed between the two positioning splints 1904. When one end of the positioning splint 1904 is inserted in the locking groove 1905, as shown in Figure 7, the resistance at this time The spring 1906 makes the positioning splint 1904 collide with the locking groove 1905, so that one end of the positioning splint 1904 is not easy to disengage from the locking groove 1905. It is only necessary to pinch the two ends of the positioning splint 1904 exposed to the outside, so that the two ends are close to each other, so that the positioning One end of the splint 1904 that is located in the locking groove 1905 is rotated to the outside, and then the positioning splint 1904 is pulled, so that the driving block 1903 moves, so that the positioning splint 1904 moves away from the locking groove 1905, so that after the hand is released, it will resist the spring 1906 The reset drives the positioning splint 1904 to rotate and will not be inserted in the locking groove 1905, thereby realizing the release of the limit.

As shown in Figure 2, in some embodiments, a pressing plate 13 is also included, the pressing surface of the pressing plate 13 is arc-shaped, and the middle part of one side of the pressing plate 13 is configured with a protruding rod 14, and the protruding rod 14 is hinged. On the free end of the sealing pressing plate 7, the pressing plate 13 is pressed against one side of the flange, so that the pressing area is increased, thereby further improving the sealing effect.

As shown in Fig. 4 and Fig. 5, in some embodiments, a sealing rubber pad 15 is installed at the end of the sealing plate 4 that is attached to one end of the pressure pipe. Plate 4 caused water to overflow due to insufficient contact force with one end of the pressure pipe.

As shown in Figures 4 and 6, in some embodiments, a connecting seat 16 is installed on the carrier frame 2, the free end of the transmission rod 801 is rotatably mounted on the connecting seat 16, and the outer peripheral side of the transmission rod 801 is configured with an outer hex nut 17 , the design of the connecting seat 16 enables both ends of the transmission rod 801 to be supported, increasing the force point, so that the transmission rod 801 is not easy to shake when rotating, and the design of the outer hexagon nut 17 allows the staff to rotate the transmission rod 801. More convenient.

As shown in Figure 1, in some embodiments, the top of the placing table 3 is V-shaped, which is used to place pressure pipes. The V-shaped design makes the pressure pipes more stable when placed on the placing table 3, and it is not easy to fall .

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. Pressure pipeline detection equipment, including a pipeline pressure test pump (1), characterized in that a support frame (2) is installed on one side of the pipeline pressure test pump (1), and the support frame (2) is vertically slid and installed There is a placing platform (3) for placing pressure pipes, the placing platform (3) is driven by a driving member, a blocking plate (4) is installed on the carrier frame (2), and the blocking plate (4) One side faces the placement table (3), which is used to be bonded to one end of the pressure pipe, and the outer peripheral side of the blocking plate (4) is configured with a plurality of connecting frames (5) in a circular array, and the connecting frames (5) ) is slidably installed along its length direction with a sliding seat (6), and a sealing plate (7) for pressing and holding on one side of the pressure pipe flange is installed on the sliding seat (6). An adjustment assembly (8) that drives the sealing plate (7) to rotate is installed on the plate (4), and an adjustment assembly (8) that drives multiple sliding seats (6) to approach or move away from the sealing plate (4) is installed on the sealing plate (4). The driving assembly (9) of the axis of the blocking plate (4), the L-shaped exhaust pipe (10) is installed on the blocking plate (4), and the horizontal end of the exhaust pipe (10) is connected to the The plugging plate (4) is connected with the inside of the pressure pipe, the other end of the exhaust pipe (10) is vertically facing upwards and a water valve (11) is installed, and the plugging plate (4) is connected with a A water inlet pipe (18) connected to the pressure pipe, and a water pipe joint (20) is installed at the free end of the water inlet pipe (18). 2. The pressure pipeline detection equipment according to claim 1, characterized in that, the drive assembly (9) includes a connecting sleeve coaxially fixed on the side of the blocking plate (4) away from the placement table (3) (901), the horizontal end of the exhaust pipe (10) is located in the connecting sleeve (901), the outer peripheral side of the connecting sleeve (901) is rotatably installed with a rotating disc (902), and the sliding seat (6 ) and the rotating disk (902) are eccentrically hinged with a drive rod (903), and a limiting member (12) for limiting the rotation of the rotating disk (902) is installed on the blocking plate (4). 3. The pressure pipeline detection equipment according to claim 2, characterized in that, the limiting member (12) includes a sliding plate (1201) slidably installed on the blocking plate (4), and the sliding plate One side of (1201) is equipped with an arc gear (1202), the outer peripheral side of the rotating disk (902) is fitted with a linkage gear (1204) meshing with the arc gear (1202), and the sliding plate (1201 ) toward the axis of the rotating disc (902), the blocking plate (4) is rotatably mounted with a threaded rod (1203), and the sliding plate (1201) is threaded on the threaded rod (1203) superior. 4. The pressure pipeline detection equipment according to claim 3, characterized in that, the adjustment assembly (8) includes a transmission rod (801) rotatably installed in the connection sleeve (901), and the transmission rod (801 ) and the sealing pressure plate (7) is installed with a linkage (802), when the transmission rod (801) rotates, through the linkage (802) to make a plurality of the sealing pressure plate (7 ) free ends approach or move away from the blocking plate (4) synchronously. 5. The pressure pipeline detection equipment according to claim 4, characterized in that, the linkage (802) includes a connecting plate (8021) threaded on the transmission rod (801), and the connecting plate (8021) The circular array is hinged with a sleeve (8022), the free end of the sleeve (8022) is slidably inserted with a drive sleeve (8023), and the free end of the drive sleeve (8023) is hinged with a connection Rod (8024), the free end of the connecting rod (8024) is connected to the sealing plate (7), and a locking piece ( 19). 6. The pressure pipeline inspection device according to claim 5, characterized in that, one side of the sleeve (8022) is provided with a through groove (1901) along its length direction, and the locking member (19) includes a The connecting block (1902) on one side of the driving sleeve rod (8023) and passing through the slot (1901), the driving block (1903) is slidably inserted on the connecting block (1902), and the driving block ( Two positioning splints (1904) are symmetrically rotated on 1903), and the opposite sides of the sleeve (8022) are provided with locking grooves (1905) for inserting the positioning splints (1904) along its length direction. An arc-shaped resistance spring (1906) is installed between the two positioning splints (1904). 7. The pressure pipeline detection equipment according to claim 1, characterized in that it further comprises a pressing plate (13), the pressing surface of the pressing plate (13) is arc-shaped, and the pressing plate ( 13) is configured with a protruding rod (14) in the middle of one side, and the protruding rod (14) is hinged on the free end of the sealing pressure plate (7). 8. The pressure pipeline detection equipment according to claim 1, characterized in that a sealing rubber pad (15) is installed at the end of the sealing plate (4) that is attached to the pressure pipeline. 9. The pressure pipeline detection equipment according to claim 4, characterized in that, a connecting seat (16) is installed on the carrier (2), and the free end of the transmission rod (801) is rotatably mounted on the connecting seat (16). On the seat (16), the outer peripheral side of the transmission rod (801) is configured with an outer hex nut (17). 10. The pressure pipeline detection equipment according to claim 1, characterized in that, the top of the placement platform (3) is V-shaped, and is used for placing pressure pipelines.

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