A pressure resistance testing device for fire protection pipes
By introducing a lateral pressure measuring mechanism and an auxiliary limiting mechanism into the fire-fighting pipe pressure testing device, the problems of single measurement method and pipe rolling are solved, realizing multi-directional measurement and preventing rolling, thus improving the accuracy and safety of measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG DECHENG HENGAN FIRE ENGINEERING CO LTD
- Filing Date
- 2025-02-10
- Publication Date
- 2026-05-26
AI Technical Summary
Existing pipe pressure testing devices have a single measurement method, resulting in less convincing measurement results. Furthermore, the pipe is prone to rolling when lateral pressure is applied, affecting the accuracy of the measurement.
The device employs a transverse pressure measuring mechanism and an auxiliary limiting mechanism. Through the combination of a pressure testing frame, a lifting platform, a hydraulic pressure bar, a V-block, and an auxiliary limiting mechanism, it achieves multi-directional radial and axial measurements of fire-fighting pipes and prevents pipe rolling through the auxiliary limiting mechanism.
Ensuring the accuracy and safety of measurement results improves the reliability and safety of fire protection pipe materials.
Smart Images
Figure CN224286550U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipe pressure resistance testing technology, specifically referring to a fire protection pipe pressure resistance testing device. Background Technology
[0002] Fire-fighting pipes refer to pipelines used in fire protection to connect fire-fighting facilities and equipment, and to transport fire-fighting water, gas or other media. Because they have separate requirements for their strength and need to be inspected separately during actual construction and use, the pressure resistance test of fire-fighting pipes is particularly important.
[0003] Existing pipe pressure testing devices often apply pressure to the pipe radially from only one side, resulting in concentrated pressure and inconsistent measurement results. Furthermore, the pipe is prone to rolling during pressure application, which affects the accuracy of the test results. To address these issues, we propose a fire protection pipe pressure testing device. Utility Model Content
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a fire-fighting pipe pressure resistance testing device, which effectively solves the problems of the single measurement form and low persuasiveness of the measurement results of the existing fire-fighting pipe pressure resistance testing devices, and solves the problem that the pipe is easy to roll and affect the measurement accuracy when lateral pressure is applied.
[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a fire-fighting pipe pressure resistance testing device, comprising a workbench and a pressure testing frame. The pressure testing frame is fixed at the middle of the upper end of the workbench. A lifting platform is provided on the inner side of the pressure testing frame, and a hydraulic pressure rod is fixed at the bottom of the middle of the lifting platform. Two movable platforms are symmetrically arranged on both sides of the pressure testing frame on the workbench. Vertical plates are fixed on the movable platforms, and a transverse pressure testing mechanism consisting of a pressure testing base and a transverse hydraulic cylinder is provided between the two symmetrical vertical plates. The pressure testing base and the transverse hydraulic cylinder are respectively fixed on the two symmetrical vertical plates. A V-shaped block is provided below the hydraulic pressure rod on the inner side of the pressure testing frame, and a fire-fighting pipe is provided on the V-shaped block. The fire-fighting pipe is fixed to the workbench by an auxiliary limiting mechanism.
[0006] As an improvement to this solution, the workbench is provided with several positioning holes, and the bottom of the V-block is fixed with a mounting plate, which is then fixed to the positioning holes with bolts.
[0007] As an improvement to this solution, the auxiliary limiting mechanism includes a support plate, a stud, a sleeve, and an auxiliary pressure rod. The stud is rotatably connected to the bottom of the support plate, and the support plate is connected to the positioning hole through the stud. The sleeve is fixed to the middle of the upper end of the support plate. The auxiliary pressure rod is inserted and pulled into the sleeve. A fastening screw is threaded on the side wall of the sleeve, and the bottom end of the fastening screw abuts against the auxiliary pressure rod.
[0008] As an improvement to this solution, the worktable is provided with two sliding grooves, and a wedge block is slidably connected in the sliding groove. The moving platform is fixed to the upper end of the wedge block. A bidirectional screw is rotatably connected to the worktable, and a drive slider is threadedly connected to the bidirectional screw. At the same time, the drive slider is slidably connected to the worktable and fixed in the middle of the bottom of the moving platform.
[0009] As an improvement to this solution, a display is provided on the side wall of the pressure testing frame, and a handwheel is fixed to one end of the bidirectional screw that passes through the workbench.
[0010] The beneficial effects of this utility model by adopting the above structure are as follows:
[0011] 1. The transverse pressure measuring mechanism, which is perpendicular to the actuator of the pressure testing machine, can measure the fire protection pipes in multiple directions, including radial and axial directions, to ensure that the measurement results are accurate and meet the requirements, thereby improving the safety and reliability of the fire protection pipes during use.
[0012] 2. An auxiliary limiting mechanism is provided. Through the detachable pressure rod, the temperature of the fire protection pipe can be ensured during radial pressure measurement, preventing it from rolling and affecting the measurement results, and improving the safety of use. Attached Figure Description
[0013] Figure 1 This is a first-view overall structural schematic diagram of a fire-fighting pipe pressure resistance testing device proposed in this utility model;
[0014] Figure 2 This is a schematic diagram of the overall structure of a fire-fighting pipe pressure testing device proposed in this utility model from a second perspective;
[0015] Figure 3 This is a sectional view from the front view of a fire-fighting pipe pressure resistance testing device proposed in this utility model;
[0016] Figure 4 This is a cross-sectional view from the right side of a fire-fighting pipe pressure resistance testing device proposed in this utility model.
[0017] The components include: 1. Workbench; 2. Pressure testing frame; 3. Lifting platform; 4. Hydraulic pressure bar; 5. Moving platform; 6. Vertical plate; 7. Lateral pressure testing mechanism; 8. Pressure testing base; 9. Lateral hydraulic cylinder; 10. Fire-fighting pipe; 11. Auxiliary limiting mechanism; 12. V-block; 13. Mounting plate; 14. Positioning hole; 15. Support plate; 16. Stud; 17. Fastening screw; 18. Sleeve; 19. Auxiliary pressure bar; 20. Slide groove; 21. Wedge block; 22. Bidirectional screw; 23. Drive slider; 24. Display; 25. Handwheel.
[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0020] like Figure 1 and Figure 2 As shown, the present invention proposes a fire-fighting pipe pressure resistance testing device, which includes a workbench 1 and a pressure testing frame 2. The pressure testing frame 2 is fixed in the middle of the upper end of the workbench 1. A lifting platform 3 is provided on the inner side of the pressure testing frame 2. A hydraulic pressure rod 4 is fixed at the bottom of the middle of the lifting platform 3.
[0021] like Figure 1 and Figure 3 As shown, in order to realize the axial pressure detection of fire pipe 10, two movable platforms 5 are symmetrically arranged on both sides of the pressure testing frame 2 on the workbench 1. Vertical plates 6 are fixed on the movable platforms 5, and a transverse pressure testing mechanism 7 composed of a pressure testing base 8 and a transverse hydraulic cylinder 9 is provided between the two symmetrical vertical plates 6. The pressure testing base 8 and the transverse hydraulic cylinder 9 are respectively fixed on the two symmetrical vertical plates 6.
[0022] like Figure 2 As shown, the workbench 1 has several positioning holes 14 evenly distributed on it. The bottom of the V-block 12 is fixed with a mounting plate 13, and the mounting plate 13 is fixed to the positioning holes 14 by bolts.
[0023] To assist in fixing and preventing rolling of the fire-fighting pipe 10 during radial pressure testing, a V-block 12 is provided below the hydraulic pressure rod 4 inside the pressure testing frame 2, and the fire-fighting pipe 10 is placed on the V-block 12. The fire-fighting pipe 10 is fixed to the workbench 1 by an auxiliary limiting mechanism 11. The auxiliary limiting mechanism 11 includes a support plate 15, a stud 16, a sleeve 18, and an auxiliary pressure rod 19. The stud 16 is rotatably connected to the bottom of the support plate 15, and the support plate 15 is connected to the positioning hole 14 through the stud 16. The sleeve 18 is fixed to the middle of the upper end of the support plate 15. The auxiliary pressure rod 19 is inserted and pulled into the sleeve 18. A fastening screw 17 is threaded on the side wall of the sleeve 18, and the bottom end of the fastening screw 17 abuts against the auxiliary pressure rod 19.
[0024] like Figure 1 and Figure 4 As shown, the worktable 1 is provided with two sliding grooves 20, and a wedge block 21 is slidably connected in the sliding groove 20. The moving table 5 is fixed to the upper end of the wedge block 21. A bidirectional screw 22 is rotatably connected to the worktable 1, and a drive slider 23 is threadedly connected to the bidirectional screw 22. At the same time, the drive slider 23 is slidably connected to the worktable 1 and fixed in the middle of the bottom of the moving table 5.
[0025] like Figure 1 As shown, a display 24 is provided on the side wall of the pressure testing frame 2, and a handwheel 25 is fixed at one end of the bidirectional screw 22 that passes through the workbench 1.
[0026] Example 1:
[0027] Several groups of fire-fighting pipes 10 from the same batch are selected for measurement. According to the diameter of the fire-fighting pipe 10, the corresponding V-block 12 is selected to ensure that the axis of the fire-fighting pipe 10 on the V-block 12 coincides with the axis of the pressure testing base 8 and the transverse hydraulic cylinder 9. The V-block 12 is then fixed in the positioning hole 14 on the workbench 1 with bolts through the mounting plate 13 at its bottom. The fire-fighting pipe 10 is then placed on the V-block 12. The handwheel 25 is turned to rotate the double-ended screw 22. The drive slider 23, which is threaded onto the double-ended screw 22, drives the moving table 5 to slide along the slide groove 20 towards the fire-fighting pipe 10 under the support of the wedge block 21, until the pressure testing base 8 and the transverse hydraulic cylinder 9 clamp both ends of the fire-fighting pipe 10. Then, the transverse hydraulic cylinder 9 is opened so that it extends to one side of the pressure testing base 8 to compress the fire-fighting pipe 10 in the axial direction. The pressure is recorded by the pressure sensor in the pressure testing base 8 and fed back to the display 24 for display, thus completing the axial compressive strength test of the fire-fighting pipe 10.
[0028] Example 2:
[0029] Place the second set of fire-fighting pipes 10 on the V-block 12, then place the two sets of support plates 15 on both sides of the fire-fighting pipes 10, and simultaneously rotate the studs 16 at the bottom of the same set of support plates 15 to fix them on the workbench 1. Then, pass the auxiliary pressure rod 19 through the fire-fighting pipe 10 and the sleeve 18, and then rotate the studs 16 on both sides to adjust the height of the auxiliary pressure rod 19 until the auxiliary pressure rod 19 presses the bottom of the inner wall of the fire-fighting pipe 10. Then, use the fastening screws 17 to press the two ends of the auxiliary pressure rod 19. Open the pressure testing machine frame 2 and move the lifting platform 3 on its inner side downward until the bottom of the hydraulic pressure rod 4 contacts the side wall of the fire-fighting pipe 10. Then, open the hydraulic pressure rod 4 to extend it downward and test the side wall of the fire-fighting pipe 10. The result is then displayed on the monitor 24. The above is the entire process of using the fire-fighting pipe 10 pressure testing device.
[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A pressure testing device for fire-fighting pipes, comprising a workbench (1) and a pressure testing frame (2), wherein the pressure testing frame (2) is fixed at the middle of the upper end of the workbench (1), characterized in that: The pressure testing frame (2) is provided with a lifting platform (3) on its inner side, and a hydraulic pressure rod (4) is fixed at the bottom center of the lifting platform (3). Two movable platforms (5) are symmetrically arranged on both sides of the pressure testing frame (2) on the workbench (1). A vertical plate (6) is fixed on the movable platform (5), and a transverse pressure testing mechanism (7) consisting of a pressure testing base (8) and a transverse hydraulic cylinder (9) is provided between the two symmetrical vertical plates (6). The pressure testing base (8) and the transverse hydraulic cylinder (9) are respectively fixed on the two symmetrical vertical plates (6). The pressure testing frame (2) has a V-shaped block (12) below the hydraulic rod (4) on the inner side, and a fire-fighting pipe (10) is provided on the V-shaped block (12). The fire-fighting pipe (10) is fixed on the workbench (1) by an auxiliary limiting mechanism (11). The workbench (1) has several positioning holes (14) evenly distributed on it. The bottom of the V-block (12) is fixed with a mounting plate (13), and the mounting plate (13) is fixed to the positioning holes (14) by bolts. The auxiliary limiting mechanism (11) includes a support plate (15), a stud (16), a sleeve (18), and an auxiliary pressure rod (19). The stud (16) is rotatably connected to the bottom of the support plate (15), and the support plate (15) is connected to the positioning hole (14) through the stud (16). The sleeve (18) is fixed in the middle of the upper end of the support plate (15). The auxiliary pressure rod (19) is inserted and pulled into the sleeve (18). A fastening screw (17) is threaded on the side wall of the sleeve (18), and the bottom end of the fastening screw (17) abuts against the auxiliary pressure rod (19).
2. The fire-fighting pipe pressure testing device according to claim 1, characterized in that: The worktable (1) is provided with two sliding grooves (20), and a wedge block (21) is slidably connected in the sliding groove (20). The moving platform (5) is fixed at the upper end of the wedge block (21). A bidirectional screw (22) is rotatably connected to the worktable (1), and a drive slider (23) is threadedly connected to the bidirectional screw (22). At the same time, the drive slider (23) is slidably connected to the worktable (1) and fixed at the middle of the bottom of the moving platform (5).
3. The fire-fighting pipe pressure testing device according to claim 2, characterized in that: The pressure testing frame (2) is equipped with a display (24) on its side wall, and a handwheel (25) is fixed to one end of the bidirectional screw (22) that passes through the workbench (1).