Hydrostatic testing machine for spiral pipe

Abstract

The utility model discloses a spiral pipe water pressure testing machine, which relates to the spiral pipe water experiment field, and comprises a workbench, the top end of the workbench is provided with a water pressure box body, two sides of the interior of the water pressure box body are respectively provided with a fixed seat and a slide rail, and the opposite sides of the fixed seat and the slide rail are respectively provided with a first limiting block in a sliding manner. In actual operation, the two ends of the spiral pipe body can be placed in the corresponding clamping grooves respectively, the baffles can block the top ends of the clamping grooves by rotating the baffles, and when the two first limiting blocks descend, the two ends of the spiral pipe body can be clamped by the clamping grooves. When the spiral pipe body descends, the spiral pipe body can be driven to enter the water pressure tank body, along with descending, the spiral pipe body can be driven to be located at different depths in the water pressure tank body, the larger the depth is, the higher the water pressure is, and the baffle can avoid the situation that the spiral pipe body floats upwards due to buoyancy, and consequently detection is inaccurate.

Description

Technical Field

[0001] This utility model relates to the field of spiral tube water testing equipment, and in particular to a spiral tube water pressure testing machine. Background Technology

[0002] Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is made by rolling low-carbon structural steel or low-alloy structural steel strip into a pipe blank at a certain spiral angle (called the forming angle), and then welding the pipe seam together. It can produce large-diameter steel pipes from narrower steel strips. Spiral pipes are mainly used for oil and natural gas transmission pipelines, and their specifications are expressed as outer diameter * wall thickness. Spiral pipes are available in single-sided and double-sided welded versions. Welded pipes must ensure that the hydrostatic test, weld tensile strength, and cold bending performance meet the requirements. Some spiral pipes need to be installed underwater, therefore, hydrostatic testing is required.

[0003] Existing spiral tube hydrostatic testing machines can only test the hydrostatic pressure of a single depth of spiral tube at a time. If different hydrostatic pressure data are required, multiple machines need to be used or a single machine needs to be tested multiple times, which results in high experimental costs.

[0004] Therefore, it is necessary to propose a spiral tube hydrostatic testing machine to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a spiral tube hydrostatic testing machine to solve the problem that existing spiral tube hydrostatic testing machines can only test the hydrostatic pressure of a single depth of spiral tube at a time. If different hydrostatic pressure data are required, multiple machines need to be used or a single machine needs to be tested multiple times, resulting in high testing costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spiral tube hydrostatic testing machine, including a workbench, a hydrostatic chamber at the top of the workbench, a fixed seat and a slide rail on both sides inside the hydrostatic chamber, a first limiting block slidably arranged on the opposite side of the fixed seat and the slide rail, a slot is opened at the top of each of the two first limiting blocks, a baffle is hinged to one side of the top of each of the two first limiting blocks, and a spiral tube body is placed between the two corresponding slots;

[0007] A second limiting block is fixed to one side of each of the two first limiting blocks, and the height of the second limiting block is lower than the height of the first limiting block.

[0008] Preferably, a funnel is provided at the bottom of the water pressure tank, the water pressure tank and the funnel are connected, and a solenoid valve is provided at the connection between the water pressure tank and the funnel.

[0009] Preferably, a lead screw is rotatably connected between the two ends inside the fixed base, a first slider is threaded on the outside of the lead screw, a second slider corresponding to the height of the first slider is slidably disposed on the slide rail, and two first limit blocks are respectively fixed on the first slider and the second slider.

[0010] Preferably, a support plate is fixed to the top of the fixed base, and a drive motor is fixed to the top of the support plate. The drive shaft of the drive motor is connected to the top of the lead screw.

[0011] Preferably, a transparent window is provided on one side of the water pressure tank, and the transparent window is distributed along the height direction of the water pressure tank.

[0012] Preferably, the bottom end of the funnel is provided with an outlet.

[0013] Preferably, a trough is provided on one side of the water pressure tank, the bottom end of the trough is opened at the top of the workbench, the bottom end of the trough is connected to an auxiliary bucket, the auxiliary bucket and the trough are connected, and multiple support columns are connected to the bottom of the workbench.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. In the actual operation of this utility model, the two ends of the spiral tube body can be placed in the corresponding slots respectively, and by rotating the baffle, the baffle can block the top of the slot. When the two first limit blocks descend, the spiral tube body can be driven into the water pressure tank. As it descends, the spiral tube body can be driven to different depths in the water pressure tank. The greater the depth, the greater the water pressure. The baffle can prevent the spiral tube body from floating due to buoyancy, which would lead to inaccurate detection.

[0016] 2. In the actual operation of this utility model, by setting first and second limit blocks of different heights, multiple spiral tube bodies can be placed at one time. At the same time, since the first and second limit blocks are at different heights, multiple spiral tube bodies can be tested for different water pressures at one time, thereby reducing testing time and improving testing efficiency.

[0017] 3. A transparent window is provided on one side of the water pressure tank. The transparent window is distributed along the height direction of the water pressure tank. Through the transparent window, personnel can view the height of the spiral tube body. In the actual operation of this utility model, by starting the drive motor, the lead screw can be driven to rotate. When the lead screw rotates, it can drive the first slider and the corresponding first limit block to move downward. The drive motor can be a servo motor, which can rotate in both directions. When the lead screw rotates in the opposite direction, it can move the first slider and the corresponding first limit block upward, so as to facilitate the retrieval of the spiral tube body for water control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the spiral tube hydrostatic testing machine of this utility model from one perspective.

[0019] Figure 2 This is a schematic diagram of the spiral tube hydrostatic testing machine of this utility model from another perspective.

[0020] Figure 3 This is a schematic diagram of the internal structure of the water pressure tank of this utility model.

[0021] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0022] In the diagram: 1. Funnel; 2. Output port; 3. Workbench; 4. Support column; 5. Hydraulic pressure tank; 6. Transparent window; 7. Slot; 8. Auxiliary hopper; 9. Fixed base; 10. Support plate; 11. Drive motor; 12. First limit block; 13. Baffle; 14. Slot; 15. Spiral tube body; 16. Second limit block; 17. Slide rail. Detailed Implementation

[0023] This utility model provides, for example Figure 1 - Figure 4 The spiral tube hydrostatic testing machine shown includes a workbench 3, with a hydrostatic chamber 5 at the top of the workbench 3. Water can be input into the hydrostatic chamber 5, and then the spiral tube body 15 to be tested can be placed to observe the condition of the spiral tube body 15 under water pressure.

[0024] A trough 7 is provided on one side of the water pressure tank 5. The bottom end of the trough 7 is located at the top of the workbench 3. The bottom end of the trough 7 is connected to an auxiliary bucket 8. The auxiliary bucket 8 is connected to the funnel 1. Multiple support columns 4 are connected to the bottom of the workbench 3. The multiple support columns 4 can support the workbench 3.

[0025] When the spiral tube body 15 completes the water pressure test, the spiral tube body 15 can be taken out and placed on the trough 7, and excess water can be discharged downward through the trough 7.

[0026] The water pressure tank 5 has a fixed seat 9 and a slide rail 17 on its two sides. The fixed seat 9 and the slide rail 17 are slidably provided with a first limiting block 12 on the opposite side. The top of the two first limiting blocks 12 is provided with a slot 14. The top of the two first limiting blocks 12 is hinged with a baffle 13 on one side. The spiral tube body 15 is placed between the two corresponding slots 14.

[0027] A lead screw is rotatably connected between the two ends inside the fixed base 9. A first slider is threaded on the outside of the lead screw. A second slider corresponding to the height of the first slider is slidably set on the slide rail 17. Two first limit blocks 12 are fixed on the first slider and the second slider respectively. A support plate 10 is fixed at the top of the fixed base 9. A drive motor 11 is fixed at the top of the support plate 10. The drive shaft of the drive motor 11 is connected to the top of the lead screw.

[0028] In the actual operation of this utility model, by starting the drive motor 11, the lead screw can be driven to rotate. When the lead screw rotates, the first slider and the corresponding first limit block 12 can be moved downward. The drive motor 11 can be a servo motor, which can rotate in both directions. When the lead screw rotates in the opposite direction, it can move the first slider and the corresponding first limit block 12 upward.

[0029] In the actual operation of this utility model, the two ends of the spiral tube body 15 can be placed in the corresponding slots 14 respectively, and by rotating the baffle 13, the baffle 13 can block the top of the slot 14. When the two first limiting blocks 12 descend, the spiral tube body 15 can be driven into the water pressure tank 5. As it descends, the spiral tube body 15 can be driven to different depths in the water pressure tank 5. The greater the depth, the greater the water pressure. The baffle 13 can prevent the spiral tube body 15 from floating due to buoyancy, which would lead to inaccurate detection.

[0030] A second limiting block 16 is fixed to one side of each of the two first limiting blocks 12, and the height of the second limiting block 16 is lower than the height of the first limiting block 12.

[0031] In the actual operation of this utility model, by setting the first limiting block 12 and the second limiting block 16 at different heights, multiple spiral tube bodies 15 can be placed at one time. At the same time, since the first limiting block 12 and the second limiting block 16 are at different heights, multiple spiral tube bodies 15 can be tested for different water pressures at one time, thereby reducing the testing time and improving the testing efficiency.

[0032] A funnel 1 is provided at the bottom of the water pressure tank 5. The water pressure tank 5 and the funnel 1 are connected. A solenoid valve is provided at the connection between the water pressure tank 5 and the funnel 1. By activating the solenoid valve, the water in the water pressure tank 5 can be discharged.

[0033] A transparent window 6 is provided on one side of the water pressure tank 5, and the transparent window 6 extends along the height of the water pressure tank 5.

[0034] The distribution allows personnel to view the height of the spiral tube body 15 through the transparent window 6.

[0035] The bottom of the funnel 1 is provided with an outlet 2, from which liquid can be discharged.

Claims

1. A hydrostatic testing machine for spiral pipes, comprising a worktable (3), characterized in that: The top of the workbench (3) is provided with a water pressure tank (5). The inside of the water pressure tank (5) is provided with a fixed seat (9) and a slide rail (17) on both sides respectively. The fixed seat (9) and the slide rail (17) are slidably provided with a first limiting block (12) on opposite sides. The top of the two first limiting blocks (12) is provided with a slot (14). The top of the two first limiting blocks (12) is hinged with a baffle (13). The spiral tube body (15) is placed between the two corresponding slots (14). A second limiting block (16) is fixed to one side of each of the two first limiting blocks (12), and the height of the second limiting block (16) is lower than the height of the first limiting block (12).

2. The hydrostatic testing machine of claim 1, wherein: The bottom end of the water pressure tank (5) is provided with a funnel (1), the water pressure tank (5) and the funnel (1) are connected, and a solenoid valve is provided at the connection between the water pressure tank (5) and the funnel (1).

3. The hydrostatic testing machine of claim 1, wherein: The fixed base (9) is rotatably connected between its two ends. The screw is threaded with a first slider on its outer side. A second slider corresponding to the height of the first slider is slidably arranged on the slide rail (17). Two first limit blocks (12) are fixed on the first slider and the second slider, respectively.

4. The hydrostatic testing machine of claim 3, wherein: The top of the fixed base (9) is fixed with a support plate (10), and the top of the support plate (10) is fixed with a drive motor (11). The drive shaft of the drive motor (11) is connected to the top of the lead screw.

5. The hydrostatic testing machine of claim 1, wherein: A transparent window (6) is provided on one side of the water pressure tank (5), and the transparent window (6) is distributed along the height direction of the water pressure tank (5).

6. The hydrostatic testing machine of claim 2, wherein: The funnel (1) has an outlet (2) at its bottom end.

7. The hydrostatic testing apparatus of claim 2, wherein: A trough (7) is provided on one side of the water pressure tank (5). The bottom end of the trough (7) is opened at the top of the workbench (3). The bottom end of the trough (7) is connected to an auxiliary bucket (8). The auxiliary bucket (8) is connected to the funnel (1). The bottom end of the workbench (3) is connected to multiple support columns (4).

Images