PEXA pipe strength detection table

Abstract

The invention relates to the technical field of pipe strength detection, and particularly provides a PEXA pipe strength detection table which comprises a base, a constant temperature box, a water injection detection mechanism, a supporting plate and an adjusting simulation mechanism. The end, connected with the moving plate, of the pipe is adjusted through cooperation of the rotary locking part, the telescopic part and the plugging locking part, the bending angle of the pipe is adjusted, the bending angle of the pipe is simulated through cooperation with the water injection detection mechanism, and different bending angles are adjusted. Therefore, the hydrostatic strength detection of the pipe in the bending state and the hydrostatic strength detection of the pipe in different bending states are realized, the hydrostatic strength of the pipe is comprehensively evaluated, the strength detection of the pipe is more comprehensive, accurate and reliable, and the problem that the detection is qualified in the linear state but fails in actual bending use is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe strength testing, and specifically proposes a PEXA pipe strength testing platform. Background Art

[0002] PEXA is one of the PEX pipes with the best performance currently. It is produced using the peroxide cross-linking method. It has the characteristics of high cross-linking degree, high temperature and high pressure resistance, and strong flexibility. It is widely used in building water supply, floor heating, industrial pipelines and other fields.

[0003] Strength testing of PEXA pipes is a key step in ensuring their quality, safety, and durability. For example, when PEXA pipes are used in floor heating applications, they must undergo hydrostatic strength testing to verify their ability to resist rupture under high pressure, thereby ensuring their reliability in floor heating applications.

[0004] Currently, when conducting hydrostatic strength tests on PEXA pipes, a straight pipe section is cut, sealed at both ends, filled with water and vented. The sample is then placed in a constant temperature water bath or oven, stabilized at 70°C ± 2°C. Finally, pressure is applied to the inside of the pipe until the test is completed. Regular observation and recording are used to determine whether the pipe has passed the test.

[0005] However, during use, some areas of the pipe need to be bent (such as 90°, 180° or a specific arc). When the pipe is bent, there is bending stress at the bend (tension on the outside and compression on the inside). The bursting pressure of the pipe in the bent state is usually 10%~20% lower than that in the straight state. The existing pipe strength testing equipment is difficult to directly detect the hydrostatic strength of the pipe in the bent state and at different bending angles during use in the field of floor heating. The strength value detected by the existing testing method is difficult to accurately represent the hydrostatic strength value of the pipe when used in the field of floor heating, resulting in the problem that the pipe that has passed the test in the straight pipe state bends during actual use and fails. Summary of the Invention

[0006] In view of the above problems, an embodiment of the present invention provides a PEXA pipe strength testing platform to solve the technical problems in the related art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides the following technical solution: a PEXA pipe strength testing platform, comprising: a base, a constant temperature box, a water injection detection mechanism, a support plate and an adjustment simulation mechanism, wherein the constant temperature box and the water injection detection mechanism are both installed on the base, and the constant temperature box is also connected to a support frame that slides up and down, and the support plate is slidably connected to the support frame.

[0008] Specifically, the side of the support frame is rotatably connected to a hook, and the support frame raised from the constant temperature box is hung on the constant temperature box through the hook to facilitate the installation and removal of the pipes; the water injection detection mechanism is an existing equipment, and there is water at a constant temperature in the constant temperature box.

[0009] The adjustment simulation mechanism is installed on the support plate, and the adjustment simulation mechanism includes a mounting groove opened on the support plate, a rotating part is rotatably connected to the mounting groove, a winding disk is fixedly installed on the rotating part, the middle part of the pipe is wound on the winding disk, and a rotation locking part for rotationally locking the rotating part is installed on the support plate. A movable plate is also slidably connected to the mounting groove, and a telescopic part that cooperates with the rotation locking part is installed between the movable plate and the rotating part. The support plate and the movable plate are jointly provided with an elastic clamping tube part and a blocking locking part. The elastic clamping tube part is used to pre-fix the end of the pipe, and the blocking locking part is used to block the end of the pipe and lock the elastic clamping tube part. The two ends of the pipe are blocked by the blocking locking part and the end of the pipe fixed on the support plate is connected to the water injection detection mechanism.

[0010] By adjusting the end of the pipe connected to the telescopic part in coordination with the rotating locking part, the telescopic part and the blocking locking part, the bending angle of the pipe is adjusted, and the strength of the pipe at different bending angles during use is simulated in coordination with the water injection detection mechanism.

[0011] In a possible implementation, the winding drum is vertically sectioned into a T-shape along its axial direction, and a limiting groove for limiting the position of the pipe is formed between the winding drum and the rotating member.

[0012] In one possible implementation, the elastic tube clamping portion includes a tube clamping member, which is in an inverted U shape. Spring grooves are provided on the support plate and the movable plate. After the two vertical sections of the tube clamping member are slid into the corresponding spring grooves, a connecting plate is installed together. The connecting plate and the spring groove are connected by a return spring.

[0013] In one possible implementation, the sealing locking portion includes a sealing ring that is slidably connected to the support plate and the movable plate, one end of the sealing ring is installed with an inner conical plug and an outer clamping assembly that are concentric with it for sealing the end of the pipe, and the other end of the sealing ring connected to the movable plate is provided with an end sealing plug, the inner conical plug is located in the outer clamping assembly, the inner conical plug is a conical hollow structure and the outer wall fixing sleeve is provided with a sealing sleeve, a guide locking assembly is installed on the pipe clamping fitting, the guide locking assembly cooperates with the outer clamping assembly to press the end of the pipe against the inner conical plug and lock it with the sealing ring, and a locking assembly for locking the pipe clamping fitting is also installed on the sealing ring.

[0014] In one possible implementation, the outer clamping assembly includes a connecting ring installed at the end of the sealing ring, a sealing gasket tightly attached to the sealing ring is installed between the connecting ring and the inner conical plug, and the connecting ring is also equipped with arc-shaped pieces evenly arranged along its circumference. The arc-shaped pieces have a certain elasticity, and the side of the arc-shaped pieces away from the inner conical plug is inclined, and multiple arc-shaped pieces form a cone whose diameter gradually decreases toward the side away from the sealing ring.

[0015] In one possible implementation, the guide locking assembly includes a fixing ring installed on the clamping member through a connecting rod, the inner ring surface of the fixing ring is conical, the inclined side wall of the arc-shaped piece is installed with a rear ball, the outer ring surface of the fixing ring is provided with a locking ring connected to it by threaded cooperation, and the outer wall of the sealing ring is provided with a corresponding external thread that is threadedly cooperated with the inner ring surface of the locking ring.

[0016] In one possible implementation, the locking assembly includes a support rod installed on the top of the outer ring surface of the sealing ring, a wedge block is installed on the end of the support rod, and an inclined surface matching the wedge block is provided on the top of the pipe clamp.

[0017] In one possible implementation, the rotation locking portion includes an adjustment rod connected to the rotating member by a spline fit and concentric with the rotating member, the adjustment rod is connected to the support plate by a threaded fit, and the top of the adjustment rod slides through the winding reel.

[0018] In one possible implementation, the telescopic portion includes a receiving groove formed on a rotating member, a plug-in plate slidably engaged with the receiving groove is installed on the movable plate, the plug-in plate and the receiving groove are connected by a reset spring, a guide column is installed on the lower end surface of the movable plate, and a guide groove slidably engaged with the guide column is formed on the mounting groove.

[0019] One or more of the above-mentioned technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. A PEXA pipe strength testing platform designed by the present invention adjusts the bending angle of the pipe by adjusting the end connected to the movable plate through the cooperation of the rotating locking part, the telescopic part and the blocking locking part, and cooperates with the water injection detection mechanism to simulate the bending angle of the pipe during actual use and adjust different bending angles, thereby realizing the static hydraulic strength test of the pipe in the bent state and the static hydraulic strength test in different bending states, comprehensively evaluating the static hydraulic strength of the pipe, making the strength test of the pipe more comprehensive, accurate and reliable, and avoiding the problem of passing the test in the straight state but failing in actual bending use.

[0020] 2. The present invention drives the rotating part and the winding drum to rotate by rotating the locking part, thereby adjusting the bending angle of the pipe. During this process, the telescopic part drives the movable plate to perform corresponding telescopic movement according to the rotation angle of the pipe, so that the pipe is always kept in a taut state during the angle adjustment process, ensuring that the bending shape of the pipe is stable during the detection process, avoiding the problem of bending angle changes due to pressure shock, affecting the detection accuracy, and further improving the accuracy of pipe strength detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the support plate and the adjustment simulation mechanism of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the support plate and the adjustment simulation mechanism of the present invention.

[0025] Figure 4 This invention Figure 3 AA section view.

[0026] Figure 5 yes Figure 4 Enlarged view of point B in .

[0027] Reference numerals: 1. Base; 2. Constant temperature box; 3. Water injection detection mechanism; 4. Support frame; 40. Hook; 5. Support plate; 6. Adjustment simulation mechanism; 60. Mounting slot; 61. Rotating member; 62. Winding reel; 620. Limiting slot; 63. Rotation locking part; 630. Adjustment lever; 64. Moving plate; 65. Telescopic part; 650. Insert plate; 651. Return spring; 652. Guide column; 653. Guide slot; 66. Elastic clamping tube part ; 660, pipe clamp; 661, spring groove; 662, connecting plate; 663, return spring; 67, sealing locking part; 670, sealing ring; 671, internal tapered plug; 672, external clamping assembly; 673, end sealing plug; 674, sealing sleeve; 680, connecting ring; 681, sealing gasket; 682, arc-shaped piece; 690, fixing ring; 692, locking ring; 601, support rod; 602, wedge block; 7, pipe. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figure 1 A PEXA pipe strength testing platform includes: a base 1, a constant temperature box 2, a water injection detection mechanism 3, a support plate 5 and an adjustment simulation mechanism 6. The constant temperature box 2 and the water injection detection mechanism 3 are both installed on the base 1. The constant temperature box 2 is also connected to a support frame 4 that slides up and down. The support plate 5 is slidably connected to the support frame 4, and after the support plate 5 slides to the top of the support frame 4, it rotates to a horizontal state to facilitate fixing the pipe 7.

[0031] Specifically, the side of the support frame 4 is rotatably connected to a hook 40, and the support frame 4 of the constant temperature box 2 is hung on the constant temperature box 2 through the hook 40 to facilitate the installation and disassembly of the pipe 7; the water injection detection mechanism 3 is an existing equipment (the complete structure is not shown in the figure), and there is water at a constant temperature in the constant temperature box 2.

[0032] See Figure 1 、 Figure 2 and Figure 3 The adjusting simulation mechanism 6 is installed on the support plate 5. The adjusting simulation mechanism 6 includes a mounting groove 60 opened on the support plate 5. A rotating member 61 is rotatably connected to the mounting groove 60. A winding disk 62 is fixedly installed on the rotating member 61. The middle part of the pipe 7 is wound around the winding disk 62. A rotation locking portion 63 for rotationally locking the rotating member 61 is installed on the support plate 5. A movable plate 64 is also slidably connected to the mounting groove 60. A telescopic portion 65 that cooperates with the rotation locking portion 63 is installed between the movable plate 64 and the rotating member 61. The support plate 5 and the movable plate 64 are jointly provided with an elastic clamping tube portion 66 and a blocking locking portion 67. The elastic clamping tube portion 66 is used to pre-fix the end of the pipe 7. The blocking locking portion 67 is used to block the end of the pipe 7 and lock the elastic clamping tube portion 66. The two ends of the pipe 7 are blocked by the blocking locking portion 67 and one end of the pipe 7 fixed on the support plate 5 is connected to the water injection detection mechanism 3.

[0033] Preparation before testing: Before testing, a certain length of pipe 7 is cut based on the distance between the fixed point of the pipe 7 and the starting point of the bending being at least 3 times the pipe diameter to prevent the elastic clamping portion 66 and the blocking locking portion 67 from generating additional stress on the bending section of the pipe 7. Then the middle part of the pipe 7 is wound on the winding drum 62. The bending radius of the pipe 7 after being wound on the winding drum 62 is greater than 5 times the diameter of the pipe 7, which meets the actual installation requirements.

[0034] The pipe 7 is bent at an angle of 180 degrees: in the initial state, after the pipe 7 is wound on the winding drum 62, the pipe 7 is bent at an angle of 180 degrees, and the two ends of the pipe 7 are elastically clamped by the elastic clamping part 66, so that the two ends of the pipe 7 can be sealed and locked by the blocking and locking part 67. Thereafter, the two ends of the pipe 7 are blocked and locked by the blocking and locking part 67, realizing the actual laying requirement when the bending angle of the pipe 7 is 180 degrees during the simulated floor heating laying, and fixing the pipe 7 by cooperating with the winding drum 62 and the two elastic clamping parts 66 to ensure that the bending shape of the pipe 7 is stable during the detection process, and to avoid changes in the bending angle due to pressure shock.

[0035] Then open the end of the pipe 7 connected to the water injection detection mechanism 3, and inject water into the pipe 7 from one end of the pipe 7 until the water overflows the pipe 7. Then seal the end of the pipe 7, and place the support frame 4, the support plate 5 and the fixed pipe 7 in the constant temperature box 2 (such as the constant water temperature or a constant and stable heater can be set in the constant temperature box 2, so that the temperature in the constant temperature box 2 is maintained at a constant temperature of 95 or 110 degrees). Finally, pressure is applied to the pipe 7 through the water injection detection mechanism 3, and regularly check and record whether the pipe 7 is leaking, deformed or broken.

[0036] The pipe 7 is bent at a 90-degree or characteristic angle: the rotating member 61 and the winding drum 62 are driven to rotate by the rotating locking portion 63. During the rotation, the rotating member 61 and the winding drum 62 drive one end of the pipe 7 fixed on the movable plate 64 and the movable plate 64 to rotate, thereby adjusting the bending angle of the pipe 7. During this process, the telescopic portion 65 drives the movable plate 64 to move accordingly according to the rotation angle of the pipe 7, so that the pipe 7 always remains in a taut state during the angle adjustment process, ensuring that the bending shape of the pipe 7 is stable during the detection process, avoiding the problem of changes in the bending angle due to pressure shock, which affects the detection accuracy. After the angle adjustment, repeat the above-mentioned supplementary water injection hydrostatic test on the pipe 7, and regularly check and record whether the pipe 7 is leaking, deformed or broken.

[0037] To sum up, by cooperating with the rotating locking part 63, the telescopic part 65 and the blocking locking part 67 to adjust the end of the pipe 7 connected to the telescopic part 65, the bending angle of the pipe 7 is adjusted, and coordinated with the water injection detection mechanism 3 to simulate the bending and different bending angles of the pipe 7 during actual use, thereby realizing the static hydraulic strength detection of the pipe 7 in the bent state and the static hydraulic strength detection in different bending states, making the strength detection of the pipe 7 more comprehensive, accurate and reliable, and avoiding the problem of passing the detection in the straight state but failing during actual bending use.

[0038] Specifically, the rotating member 61 is composed of a disc and a supplementary plate installed on the side wall thereof and tangential thereto. The supplementary plate is used to be connected to the moving plate 64 via a telescopic portion 65 .

[0039] See Figure 1 and Figure 2 The winding drum 62 is vertically cut into a T shape along its axial direction, and a limiting groove 620 is formed between the winding drum 62 and the rotating member 61 to limit the pipe 7, preventing the pipe 7 from detaching from the winding drum 62 after the two ends are fixed.

[0040] See Figure 2 and Figure 4 The elastic clamping tube portion 66 includes a clamping tube member 660, which is in an inverted U shape. A spring groove 661 is provided on the support plate 5 and the movable plate 64. The two vertical sections of the clamping tube member 660 are slidably inserted into the corresponding spring grooves 661 and a connecting plate 662 is installed together. The connecting plate 662 and the spring groove 661 are connected by a return spring 663.

[0041] After the pipe 7 is wound in the limiting groove 620, the pipe clamping fitting 660 is manually pulled, and the pipe clamping fitting 660 drives the connecting plate 662 to move so that the return spring 663 is stretched, and then the two ends of the pipe 7 are respectively clamped between the support plate 5 and the pipe clamping fitting 660 thereon, and between the movable plate 64 and the pipe clamping fitting 660 thereon, and the end of the pipe 7 is pre-tightened and fixed through the cooperation of the return spring 663 and the pipe clamping fitting 660, so as to prevent the sealing locking part 67 from sealing the end of the pipe 7 and its two ends from moving arbitrarily when locked, affecting the sealing and fixing effect of the pipe 7.

[0042] See Figure 2 、 Figure 3 and Figure 5The sealing and locking portion 67 includes a sealing ring 670 that is slidably connected to the support plate 5 and the movable plate 64. One end of the sealing ring 670 is installed with an inner conical plug 671 and an outer clamping assembly 672 that are concentric with it for sealing the end of the pipe 7. The other end of the sealing ring 670 connected to the movable plate 64 is provided with an end sealing plug 673. The inner conical plug 671 is located in the outer clamping assembly 672. The inner conical plug 671 is a conical hollow structure and the outer wall fixed sleeve is provided with a sealing sleeve 674. A guide locking assembly is installed on the pipe clamp 660. The guide locking assembly cooperates with the outer clamping assembly 672 to press the end of the pipe 7 against the inner conical plug 671 and lock it with the sealing ring 670. A locking assembly for locking the pipe clamp 660 is also installed on the sealing ring 670.

[0043] After the sealing locking part 67 seals the end of the pipe 7, the end seal 673 connected by a thread on the sealing ring 670 is removed, and the end of the sealing ring 670 connected to the support plate 5 is connected to the water injection detection mechanism 3. The water injection detection mechanism 3 injects water into the pipe 7 until the water fills the pipe 7 and overflows from the sealing ring 670 at the other end of the pipe 7, and then the end of the sealing ring 670 connected to the movable plate 64 is blocked by the end seal 673 to facilitate pressure detection in the pipe 7.

[0044] See Figure 5 The outer clamping assembly 672 includes a connecting ring 680 installed at the end of the sealing ring 670, and a sealing gasket 681 is installed between the connecting ring 680 and the inner conical plug 671, which is tightly attached to the sealing ring 670. The connecting ring 680 is also equipped with arc-shaped pieces 682 evenly arranged along its circumference. The arc-shaped pieces 682 have a certain elasticity, and the side of the arc-shaped pieces 682 away from the inner conical plug 671 is inclined. Multiple arc-shaped pieces 682 form a cone whose diameter gradually decreases toward the side away from the sealing ring 670.

[0045] After both ends of the tube 7 are pre-fixed, the sealing ring 670 is pushed toward the end of the tube 7. During the movement of the sealing ring 670, the inner conical plug 671 is inserted into the end of the tube 7 and tightly adheres to the inner wall of the tube 7 through the sealing sleeve 674 to achieve sealing of the end of the tube 7. At the same time, a conical sleeve formed by multiple arc-shaped pieces 682 is arranged on the outer wall of the end of the tube 7 until the end of the tube 7 is tightly pressed against the sealing gasket 681. At this time, the arc-shaped piece 682 is deformed and pressed against the side wall of the tube 7 under the guidance and extrusion of the guide locking component. The inner conical plug 671 and the outer clamping component 672 cooperate to achieve the inner insertion seal, outer clamping seal and tight sealing effect of the end of the tube 7 against the sealing gasket 681, thereby preventing leakage during the detection of the tube 7 and affecting the accuracy of the detection; and locking the guide locking component and the outer clamping component 672.

[0046] In addition, during the movement of the blocking ring 670 , the pipe clamp 660 is pressed and locked by the locking assembly, thereby achieving a further fixing effect on the pipe 7 .

[0047] See Figure 2 and Figure 5 The guide locking assembly includes a fixing ring 690 installed on the clamping tube 660 through a connecting rod. The inner ring surface of the fixing ring 690 is conical, and the inclined side wall of the arc-shaped piece 682 is installed with a rear ball. The outer ring surface of the fixing ring 690 is provided with a locking ring 692 connected to it by threaded cooperation, and the outer side wall of the sealing ring 670 is provided with a corresponding external thread that is threadedly cooperated with the inner ring surface of the locking ring 692.

[0048] When the end of the tube 7 passes through the arc section of the tube clamp 660, the end of the tube 7 passes through the fixing ring 690 at the same time. When the sealing ring 670 moves toward the end of the tube 7, multiple arc pieces 682 are inserted into the fixing ring 690. The conical inner ring surface of the fixing ring 690 cooperates with the inclined side wall of the arc piece 682 to squeeze the arc piece 682 toward the side wall of the tube 7 until the arc piece 682 presses the tube 7 against the inserted conical plug 671, thereby achieving the internal insertion seal and external clamping seal of the end of the tube 7 and the sealing effect of the end being tightly pressed against the sealing gasket 681. Then, the locking ring 692 is rotated so that the locking ring 692 moves from the fixing ring 690 to the sealing ring 670 and is locked and connected with the sealing ring 670 by threaded cooperation, thereby locking the sealing ring 670 and the fixing ring 690.

[0049] See Figure 2 and Figure 4 The locking assembly includes a support rod 601 installed on the top of the outer ring surface of the sealing ring 670, and a wedge block 602 is installed at the end of the support rod 601. The top of the pipe clamping fitting 660 is provided with an inclined surface that matches the wedge block 602. When the sealing ring 670 moves toward the pipe clamping fitting 660, the sealing ring 670 drives the wedge block 602 to move toward the pipe clamping fitting 660 through the support rod 601 until the inclined surface of the wedge block 602 presses against the inclined surface of the pipe clamping fitting 660, thereby locking the pipe clamping fitting 660, further improving the fixing effect of the pipe clamping fitting 660 on the pipe 7, and at the same time realizing the integration of the end sealing of the pipe 7 and the locking of the pipe clamping fitting 660.

[0050] See Figure 3 and Figure 4 The rotation locking portion 63 includes an adjusting rod 630 connected to the rotating member 61 by a spline fit and concentric with the rotating member 61. The adjusting rod 630 is connected to the support plate 5 by a threaded fit, and the top of the adjusting rod 630 slides through the winding reel 62.

[0051] See Figure 1 、 Figure 3 and Figure 4 The telescopic portion 65 includes a receiving groove formed on the rotating member 61, and a plug-in plate 650 is installed on the movable plate 64 and is slidably plugged into the receiving groove. The plug-in plate 650 and the receiving groove are connected by a return spring 651. A guide column 652 is installed on the lower end surface of the movable plate 64, and a guide groove 653 is provided on the mounting groove 60 and is slidably engaged with the guide column 652.

[0052] Specifically, the storage slot is provided on the supplementary plate; when adjusting the bending angle of the tube 7, the adjusting rod 630 is rotated, and the adjusting rod 630 drives the rotating member 61 and the winding drum 62 to rotate during the rotation process, and the rotating member 61 is slidably plugged with the plug plate 650 between the movable plate 64, thereby driving the end of the tube 7 fixed on the movable plate 64 to rotate. During the rotation process, the return spring 651 slides with the guide column 652 and the guide groove 653 at the lower end of the movable plate 64, and the tube 7 is tightened during the rotation of the rotating member 61 to ensure that the tube 7 always remains in a tightened state, and to ensure that the bending shape of the tube 7 is stable during the detection process, thereby avoiding the problem of changes in the bending angle due to pressure shock, which affects the detection accuracy.

[0053] See Figure 1-Figure 5 During specific operation, the tube 7 is bent at an angle of 180 degrees: in the initial state, after the tube 7 is wound on the winding reel 62, the tube 7 is bent at an angle of 180 degrees, and the two ends of the tube 7 are elastically clamped by the elastic clamping part 66, and then the two ends of the tube 7 are sealed and locked by the blocking and locking part 67.

[0054] Then, the end of the pipe 7 connected to the water injection detection mechanism 3 is opened, and the water injection detection mechanism 3 injects water into the pipe 7 from one end until the water overflows the pipe 7. Then, the end of the pipe 7 is sealed, and the support frame 4, the support plate 5 and the fixed pipe 7 are placed in the constant temperature box 2. Finally, pressure is applied to the pipe 7 through the water injection detection mechanism 3, and regular inspections and records are made on whether the pipe 7 is leaking, deformed or broken.

[0055] The pipe 7 is bent at a 90-degree or characteristic angle: the rotating member 61 and the winding drum 62 are driven to rotate by the rotating locking portion 63. During the rotation, the rotating member 61 and the winding drum 62 drive one end of the pipe 7 fixed on the movable plate 64 and the movable plate 64 to rotate, thereby adjusting the bending angle of the pipe 7. During this process, the telescopic portion 65 drives the movable plate 64 to move accordingly according to the rotation angle of the pipe 7, so that the pipe 7 after the angle adjustment is always kept in a taut state. After the angle is adjusted, the above-mentioned detection steps are repeated to perform water injection hydrostatic detection on the pipe 7, and regularly check and record whether the pipe 7 is leaking, deformed or broken.

[0056] It should be noted that the water pressure inside the pipe 7 is monitored in real time by a pressure sensor. The pressure sensor can be set on the outside of the end seal 673. The sensitive surface of the pressure sensor contacts the outside of the end seal 673, and the water pressure inside the pipe 7 can be measured. The detection principle of the pressure sensor is existing technology and will not be described in detail.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connected," "set," and the like should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0060] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PEXA pipe strength testing station, characterized in that: include: Base, the top of the base is equipped with a water tank and a water filling detection mechanism; A support frame is provided on the water tank; A support plate is provided on the support frame; The adjustment simulation mechanism is provided on the support plate, including a mounting groove provided on the support plate, a rotating member is rotatably provided on the mounting groove, a winding disk is provided on the rotating member, the middle part of the pipe is wound on the winding disk, a rotation locking portion for rotationally locking the rotating member is provided on the support plate, and a movable plate is also slidably connected to the mounting groove, a telescopic portion that cooperates with the rotation locking portion is installed between the movable plate and the rotating member, and an elastic clamping portion and a blocking locking portion are commonly provided on the support plate and the movable plate, the elastic clamping portion is used to pre-fix the end of the pipe, the blocking locking portion is used to block the end of the pipe and lock the elastic clamping portion, both ends of the pipe are blocked by the blocking locking portion and one end of the pipe fixed on the support plate is connected to the water injection detection mechanism; By adjusting the end of the pipe connected to the telescopic part in coordination with the rotating locking part, the telescopic part and the blocking locking part, the bending angle of the pipe is adjusted, and the strength of the pipe at different bending angles during use is simulated and tested in coordination with the water injection detection mechanism.

2. The PEXA pipe strength testing platform according to claim 1, characterized in that: The elastic tube clamping part includes a tube clamping piece, which is in an inverted U shape. Spring grooves are provided on the support plate and the movable plate. The two vertical sections of the tube clamping piece are slid into the corresponding spring grooves and a connecting plate is installed together. The connecting plate and the spring groove are connected by a return spring.

3. The PEXA pipe strength testing platform according to claim 1, characterized in that: The rotation locking portion includes an adjusting rod connected to the rotating member by a spline fit and concentric with the rotating member. The adjusting rod is connected to the support plate by a thread fit, and the top of the adjusting rod slides through the winding drum.

4. The PEXA pipe strength testing platform according to claim 2, characterized in that: The sealing and locking part includes a sealing ring that is slidably connected to the supporting plate and the movable plate. One end of the sealing ring is equipped with an inner conical plug and an outer clamping assembly that are concentric with it for sealing the end of the pipe. The other end of the sealing ring connected to the movable plate is provided with an end sealing plug. The inner conical plug is located in the outer clamping assembly. The inner conical plug is a conical hollow structure. A guide locking assembly is installed on the pipe clamping fitting. The guide locking assembly cooperates with the outer clamping assembly to press the end of the pipe against the inner conical plug and lock it with the sealing ring. A locking assembly for locking the pipe clamping fitting is also installed on the sealing ring.

5. The PEXA pipe strength testing platform according to claim 1, characterized in that: The winding drum is vertically cut into a T shape along its axial direction, and a limiting groove for limiting the position of the pipe is formed between the winding drum and the rotating member.

6. The PEXA pipe strength testing platform according to claim 1, characterized in that: The telescopic part includes a receiving groove opened on the rotating part, a plug-in plate is installed on the movable plate and is slidably plugged into the receiving groove, the plug-in plate and the receiving groove are connected by a reset spring, a guide column is installed on the lower end surface of the movable plate, and a guide groove is opened on the mounting groove and is slidably engaged with the guide column.

7. The PEXA pipe strength testing station according to claim 4, characterized in that: The outer clamping assembly includes a connecting ring installed at the end of the sealing ring, a sealing gasket tightly attached to the sealing ring is installed between the connecting ring and the inner supporting conical plug, and the connecting ring is also equipped with arc-shaped pieces evenly arranged along its circumference. The side of the arc-shaped piece away from the inserted conical screen is inclined, and multiple arc-shaped pieces form a cone whose diameter gradually decreases towards the side away from the sealing ring.

8. The PEXA pipe strength testing station according to claim 7, characterized in that: The guide locking assembly includes a fixing ring installed on the clamping tube through a connecting rod, the inner ring surface of the fixing ring is conical, the inclined side wall of the arc-shaped piece is installed with a rear ball, the outer ring surface of the fixing ring is provided with a locking ring connected to it by threaded cooperation, and the outer side wall of the sealing ring is provided with a corresponding external thread that is threadedly cooperated with the inner ring surface of the locking ring.

9. The PEXA pipe strength testing station according to claim 4, characterized in that: The locking assembly includes a support rod installed on the top of the outer ring surface of the sealing ring, a wedge block is installed on the end of the support rod, and an inclined surface matching the wedge block is opened on the top of the pipe clamp.

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