Glass steel pipeline long-term hydrostatic test device

Abstract

The utility model relates to glass steel hydrostatic test technical field especially relates to glass steel pipeline long -term hydrostatic test device, including test cylinder, still including left rubber seal ring, left seal ring groove, internal thread, carousel, external thread, right rubber seal ring and right seal ring groove, the utility model discloses glass steel pipe is put into the inside of test cylinder through entering pipe fluting, then again glass steel pipe's left end is inserted into the inside of left seal ring groove, subsequently through the handle rotation turning handle, turning handle drive carousel rotates, carousel will move because of the reason of thread to the direction of glass steel pipe in the process of rotating, carousel when moving then will drive right rubber seal ring to the direction of glass steel pipe moves, until glass steel pipe's right end is inserted into the inside of right seal ring groove, like this glass steel pipe is clamped through the cooperation of test cylinder and carousel, and glass steel pipe's both ends are plugged up through left rubber seal ring and right rubber seal ring, realized the collaborative function of plugging and positioning.

Description

Technical Field

[0001] This utility model relates to the field of hydrostatic testing technology for fiberglass reinforced plastics (FRP), and more particularly to a device for long-term hydrostatic testing of FRP pipes. Background Technology

[0002] Fiberglass pipe, also known as glass fiber wound pipe, primarily uses glass fiber and its products as reinforcing materials, unsaturated polyester resin and epoxy resin as basic materials, and inorganic non-metallic granular materials such as quartz sand and calcium carbonate as fillers. The standard effective lengths are 6m and 12m. There are three manufacturing methods: fixed-length winding, centrifugal casting, and continuous winding. Products can be classified according to their manufacturing process, pressure rating (PN), and stiffness rating (SN).

[0003] Common long-term hydrostatic pressure testing devices for FRP pipes only include the function of hydrostatic pressure testing, which can test the compressive strength of FRP pipes. However, they lack the coordinated function of sealing and positioning, which cannot guarantee the convenience of test installation and operation. It is easy to encounter problems such as needing to seal both ends of the FRP pipe and fix its position before testing, but these two operations need to be performed separately, and they still need to be disassembled separately after the test. The operation steps are cumbersome and affect the operation efficiency.

[0004] Therefore, in view of the lack of sealing and positioning coordination function in the above-mentioned long-term hydrostatic pressure test device for FRP pipes, which leads to the need for step-by-step operation and repeated disassembly and assembly, requiring the pipe ends to be sealed and fixed separately first, and then disassembled step by step after testing, the process is cumbersome and affects the test efficiency, there is an urgent need to design a new type of long-term hydrostatic pressure test device for FRP pipes. Utility Model Content

[0005] To overcome the problem that common long-term hydrostatic pressure testing devices for FRP pipes lack sealing and positioning coordination functions, resulting in step-by-step installation and disassembly, repeated disassembly and assembly, and the need to first seal both ends of the pipe separately and fix their positions, and then disassemble them step by step after the test, the process is cumbersome and affects the testing efficiency.

[0006] The technical solution of this utility model is as follows: a long-term hydrostatic pressure test device for fiberglass pipes, including a test cylinder; it also includes a left rubber sealing ring, a left sealing ring groove, an internal thread, a turntable, an external thread, a right rubber sealing ring, and a right sealing ring groove. A left rubber sealing ring is provided on the left side of the test cylinder, and a left sealing ring groove is provided on the right side of the left rubber sealing ring. An internal thread is provided on the right side of the inner wall of the test cylinder. A turntable is provided on the right side of the test cylinder corresponding to the position of the internal thread. An external thread is provided around the turntable, and the turntable is threadedly connected to the internal thread of the test cylinder through the external thread. A right rubber sealing ring is provided on the left side of the turntable corresponding to the position of the left rubber sealing ring, and a right sealing ring groove is provided on the left side of the right rubber sealing ring corresponding to the position of the left sealing ring groove.

[0007] Preferably, the fiberglass tube is inserted into the test cylinder through the inlet slot, and then the left end of the fiberglass tube is inserted into the left sealing ring groove. The rotating rod is then turned by gripping the handle, driving the turntable to rotate. During rotation, the turntable moves towards the fiberglass tube due to its threads. This movement of the turntable also moves the right rubber sealing ring towards the fiberglass tube until the right end of the fiberglass tube is inserted into the right sealing ring groove. This clamps the fiberglass tube in place through the cooperation of the test cylinder and the turntable, and secures the fiberglass tube using the left and right rubber sealing rings. By sealing both ends, a combined sealing and positioning function is achieved, solving the problem of common long-term hydrostatic pressure testing devices for FRP pipes. These devices only include hydrostatic pressure testing, which can test the compressive strength of FRP pipes, but lack the combined sealing and positioning function. This makes it difficult to guarantee the convenience of test installation and operation. It is easy to encounter the problem that before testing FRP pipes, both ends of the FRP pipes need to be sealed and their positions fixed, but these two operations need to be performed separately, and they still need to be disassembled separately after the test. The operation steps are cumbersome and affect the operation efficiency.

[0008] Preferably, a rotating rod is located at the center of the right side of the turntable, and a handle is connected to the right end of the rotating rod.

[0009] Preferably, an inlet slot is provided on the upper left side of the test cylinder, and a water pressure sensor is provided on the lower left side inside the test cylinder.

[0010] Preferably, a solenoid valve water inlet pipe is provided at the center of the left side of the test cylinder, and a solenoid valve pressure relief pipe is provided above the middle of the left side of the test cylinder, corresponding to the position of the solenoid valve water inlet pipe.

[0011] Preferably, a pressure gauge is installed on the upper left side of the test cylinder, corresponding to the position of the solenoid valve pressure relief pipe.

[0012] Preferably, the test cylinder has four rectangular support legs at the bottom.

[0013] Preferably, a mounting plate is provided on the right side above the test cylinder, and a PLC controller is provided on the top of the mounting plate.

[0014] The beneficial effects of this utility model are:

[0015] 1. After the fiberglass pipe is inserted into the inner cavity of the test cylinder through the inlet slot, its left end is first embedded in the left sealing ring groove. Then, the handle drives the rotating rod to rotate the turntable. Based on the principle of threaded transmission, the turntable moves along the axis towards the fiberglass pipe during rotation, simultaneously pushing the right rubber sealing ring to gradually press against the right end of the pipe until the right end of the pipe is precisely inserted into the right sealing ring groove. The test cylinder and the turntable form a spatial constraint through bidirectional alignment and clamping. At the same time, the left and right rubber sealing rings establish axial sealing interfaces at both ends of the pipe, ultimately realizing the coordinated integrated operation of pipe sealing and positioning functions. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic left-side view of the overall structure of the fiberglass pipe long-term hydrostatic pressure test device of this utility model.

[0017] Figure 2 The diagram shown is a right-side view of the overall structure of the fiberglass pipe long-term hydrostatic pressure test device of this utility model.

[0018] Figure 3 The diagram shown is a cross-sectional view of the test cylinder of the long-term hydrostatic pressure test device for fiberglass pipes according to this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the turntable structure of the long-term hydrostatic pressure test device for fiberglass pipes according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Test cylinder; 2. Left rubber sealing ring; 3. Left sealing ring groove; 4. Internal thread; 5. Turntable; 6. External thread; 7. Handle; 8. Right rubber sealing ring; 9. Right sealing ring groove; 10. Inlet pipe groove; 11. Water pressure sensor; 12. Solenoid valve inlet pipe; 13. Solenoid valve pressure relief pipe; 14. Pressure gauge; 15. Support leg; 16. Mounting plate; 17. PLC controller; 18. Rotating rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4This utility model provides an embodiment of a long-term hydrostatic pressure testing device for fiberglass pipes, including a test cylinder 1; it also includes a left rubber sealing ring 2, a left sealing ring groove 3, an internal thread 4, a turntable 5, an external thread 6, a right rubber sealing ring 8, and a right sealing ring groove 9. The left rubber sealing ring 2 is located on the left side of the interior of the test cylinder 1, and the left sealing ring groove 3 is located on the right side of the left rubber sealing ring 2. The internal thread 4 is located on the right side of the inner wall of the test cylinder 1. A turntable 5 is located on the right side of the interior of the test cylinder 1 corresponding to the position of the internal thread 4. The turntable 5 has external threads 6 around its circumference and is threadedly connected to the internal thread 4 of the test cylinder 1 via the external threads 6. The right rubber sealing ring 8 is located on the left side of the turntable 5 corresponding to the position of the left rubber sealing ring 2, and the right sealing ring groove 9 is located on the left side of the right rubber sealing ring 8 corresponding to the position of the left sealing ring groove 3. A fiberglass pipe is inserted into the test cylinder 1 through the inlet slot 10, and then the left end of the fiberglass pipe is inserted into the left sealing ring groove 3. The rotating rod 1 is then rotated using the handle 7. 8. The rotating rod 18 drives the turntable 5 to rotate. During the rotation, the turntable 5 will move towards the FRP pipe due to the thread. When the turntable 5 moves, it will drive the right rubber sealing ring 8 towards the FRP pipe until the right end of the FRP pipe is inserted into the right sealing ring groove 9. In this way, the FRP pipe is clamped by the cooperation of the test cylinder 1 and the turntable 5, and the two ends of the FRP pipe are sealed by the left rubber sealing ring 2 and the right rubber sealing ring 8. The sealing and positioning functions are coordinated to solve the problem of common FRP pipe long-term hydrostatic pressure test devices, which only include the function of hydrostatic pressure test and can test the pressure resistance of FRP pipe, but lack the coordinated function of sealing and positioning. This makes it difficult to guarantee the convenience of test installation and operation. It is easy to find that before testing the FRP pipe, it is necessary to seal both ends of the FRP pipe and fix its position. However, these two operations need to be performed separately, and they still need to be disassembled separately after the test. The operation steps are cumbersome and affect the operation efficiency.

[0023] Please see Figures 2-4In this embodiment, a rotating rod 18 is located at the center of the right side of the turntable 5, and a handle 7 is connected to the right end of the rotating rod 18. Rotating the handle 7 can drive the rotating rod 18 to rotate. An inlet slot 10 is opened on the upper left side of the test cylinder 1. A water pressure sensor 11 is located on the lower left side inside the test cylinder 1. The water pressure in the fiberglass pipe can be detected by the FST800-1500 water pressure sensor 11, and the detected water pressure is transmitted to the PLC controller 17. A solenoid valve water inlet pipe is located at the center of the left side of the test cylinder 1. 12. A solenoid valve pressure relief pipe 13 is installed on the upper left side of the test cylinder 1, corresponding to the position of the solenoid valve water inlet pipe 12. The solenoid valve water inlet pipe 12 is opened by the PLC controller 17, and then clean water is added to the fiberglass pipe through the solenoid valve water inlet pipe 12 by an external water pump. After the water is filled, the solenoid valve water inlet pipe 12 is closed by the PLC controller 17 to maintain pressure. When the detected water pressure exceeds the parameter set in advance on the PLC controller 17, the PLC controller 17 drives the solenoid valve pressure relief pipe 13 to open, thereby performing pressure relief operation.

[0024] Please see Figures 1-4 In this embodiment, a pressure gauge 14 is installed on the upper left side of the test cylinder 1, corresponding to the position of the solenoid valve pressure relief pipe 13. The pressure in the fiberglass pipe can be directly observed through the pressure gauge 14. Four support legs 15 are arranged in a rectangle around the lower part of the test cylinder 1 to support the entire device. An installation plate 16 is installed on the upper right side of the test cylinder 1, and a PLC controller 17 is installed on the top of the installation plate 16. The water pressure value is preset on the PLC controller 17.

[0025] During operation, the fiberglass pipe is inserted into the inner cavity of the test cylinder 1 through the inlet slot 10. Its left end is first embedded in the left sealing ring groove 3. Then, the handle 7 drives the rotating rod 18 to rotate the turntable 5. Based on the threaded transmission principle, the turntable 5 moves along the axis towards the fiberglass pipe during rotation, simultaneously pushing the right rubber sealing ring 8 towards the right end of the pipe until the right end of the pipe is precisely inserted into the right sealing ring groove 9. The bidirectional alignment and clamping of the test cylinder 1 and the turntable 5 create spatial constraints. Simultaneously, the left rubber sealing ring 2 and the right rubber sealing ring 8 establish axial sealing interfaces at both ends of the pipe. Then, the solenoid valve inlet pipe 12 is opened via the PLC controller 17, and then... Clean water is introduced into the fiberglass pipe through an external water conveyor via a solenoid valve inlet pipe 12. After water injection is completed, the solenoid valve inlet pipe 12 is closed by the PLC controller 17 to maintain pressure. During this process, the water pressure in the fiberglass pipe is detected by a water pressure sensor 11 of model FST800-1500, and the detected water pressure is transmitted to the PLC controller 17. When the detected water pressure exceeds the parameter set on the PLC controller 17, the PLC controller 17 drives the solenoid valve pressure relief pipe 13 to open, thereby performing pressure relief. The pressure in the fiberglass pipe can be directly observed through the pressure gauge 14, realizing the coordinated function of sealing and positioning.

[0026] Following the steps described above, the fiberglass tube is inserted into the test cylinder 1 through the inlet slot 10. Then, the left end of the fiberglass tube is inserted into the left sealing ring groove 3. Next, the rotating rod 18 is rotated using the handle 7. The rotating rod 18 drives the turntable 5 to rotate. During rotation, the turntable 5 moves towards the fiberglass tube due to its threads. This movement of the turntable 5 causes the right rubber sealing ring 8 to move towards the fiberglass tube until the right end of the fiberglass tube is inserted into the right sealing ring groove 9. In this way, the fiberglass tube is clamped by the cooperation of the test cylinder 1 and the turntable 5, and the left rubber sealing ring 2 and right sealing ring 9 further secure the tube. The rubber sealing ring 8 seals both ends of the FRP pipe, achieving a synergistic function of sealing and positioning. This addresses the common problem of long-term hydrostatic pressure testing devices for FRP pipes, which only include hydrostatic pressure testing and can test the pressure resistance of FRP pipes, but lack the synergistic function of sealing and positioning. This makes it difficult to guarantee the convenience of test installation and operation. It is easy to encounter the problem that before testing FRP pipes, both ends of the FRP pipe need to be sealed and their positions fixed, but these two operations need to be performed separately, and they still need to be disassembled separately after the test. The operation steps are cumbersome and affect the operation efficiency.

Claims

1. A long-term hydrostatic pressure testing device for fiberglass pipes, comprising a test cylinder (1); characterized in that: It also includes a left rubber sealing ring (2), a left sealing ring groove (3), an internal thread (4), a turntable (5), an external thread (6), a right rubber sealing ring (8), and a right sealing ring groove (9). The left rubber sealing ring (2) is provided on the left side inside the test cylinder (1), and the left sealing ring groove (3) is provided on the right side of the left rubber sealing ring (2). The internal thread (4) is provided on the right side of the inner wall of the test cylinder (1). The turntable (5) is provided on the right side inside the test cylinder (1) corresponding to the position of the internal thread (4). The turntable (5) is provided with external threads (6) around its body. The turntable (5) is threadedly connected to the internal thread (4) of the test cylinder (1) through the external thread (6). The right rubber sealing ring (8) is provided on the left side of the turntable (5) corresponding to the position of the left rubber sealing ring (2), and the right sealing ring groove (9) is provided on the left side of the right rubber sealing ring (8) corresponding to the position of the left sealing ring groove (3).

2. The long-term hydrostatic pressure test device for fiberglass pipes according to claim 1, characterized in that: A rotating rod (18) is set at the center of the right side of the turntable (5), and a handle (7) is connected to the right end of the rotating rod (18).

3. The long-term hydrostatic pressure testing device for fiberglass pipes according to claim 1, characterized in that: The test cylinder (1) has an inlet slot (10) on the upper left side and a water pressure sensor (11) is installed on the lower left side inside the test cylinder (1).

4. The long-term hydrostatic pressure test device for fiberglass pipes according to claim 1, characterized in that: A solenoid valve water inlet pipe (12) is provided at the center of the left side of the test cylinder (1), and a solenoid valve pressure relief pipe (13) is provided at the upper position of the middle left side of the test cylinder (1) corresponding to the position of the solenoid valve water inlet pipe (12).

5. The long-term hydrostatic pressure test device for fiberglass pipes according to claim 4, characterized in that: A pressure gauge (14) is installed on the upper left side of the test cylinder (1), corresponding to the position of the solenoid valve pressure relief pipe (13).

6. The long-term hydrostatic pressure test device for fiberglass pipes according to claim 1, characterized in that: The test cylinder (1) has four rectangular support legs (15) on its lower part.

7. The long-term hydrostatic pressure test device for fiberglass pipes according to claim 1, characterized in that: An installation plate (16) is provided on the right side above the test cylinder (1), and a PLC controller (17) is provided on the top of the installation plate (16).

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