A corrugated pipe testing instrument

Abstract

The present invention relates to a corrugated pipe testing instrument, which includes a detection valve, a pressure relief valve, a detection bottom plate, a force measuring bottom plate, a positioning device, a force measuring device, a moving seat, a fixed seat and a detection seat; the force measuring bottom plate is slidably installed on the detection bottom plate; the positioning device is respectively connected to the force measuring bottom plate and the detection bottom plate; the force measuring device is installed on the force measuring bottom plate; the moving seat is slidably installed on the detection bottom plate and is connected to the force measuring device; the fixed seat is installed on the detection bottom plate and is arranged opposite to the moving seat, a first detection hole is provided on the fixed seat, both the detection valve and the pressure relief valve are installed on the fixed seat and are both communicated with the first detection hole; the detection seats are respectively fixed on the moving seat and the fixed seat, a detection through hole is provided on the detection seat, and the detection through hole is communicated with the first detection hole; both ends of the corrugated pipe are respectively inserted into the detection through holes of the two detection seats. This instrument detects the expansion force of the corrugated pipe through the force measuring device and the movable force measuring bottom plate, with convenient detection, accurate detection results and simple structure.

Description

Technical Field

[0001] The present invention relates to a testing instrument, especially a corrugated pipe testing instrument. Background Art

[0002] Corrugated pipes need to be detected. Currently, the main detection is the maximum pressure that can be withstood. After the corrugated pipe is pressurized, due to the action of the pressure, the corrugated pipe will expand, that is, the axial length will become longer. After the corrugated pipe becomes longer, there is a tension force. The tension force will have an impact in some occasions. Therefore, it is necessary to detect the value of this tension force. However, the existing corrugated pipe detection equipment cannot detect the tension force and can only detect the pressure. Summary of the Invention

[0003] To solve the above problems, the present invention provides a corrugated pipe testing instrument that can detect the tension force of the corrugated pipe, has a simple structure and is convenient to use. The specific technical solution is as follows:

[0004] A corrugated pipe testing instrument includes a detection valve and a pressure relief valve, and further includes: a detection bottom plate; a force measuring bottom plate, the force measuring bottom plate is slidably installed on the detection bottom plate; a positioning device, the positioning device is respectively connected to the force measuring bottom plate and the detection bottom plate; a force measuring device, the force measuring device is installed on the force measuring bottom plate; a moving seat, the moving seat is slidably installed on the detection bottom plate and is connected to the force measuring device; a fixed seat, the fixed seat is installed on the detection bottom plate and is arranged opposite to the moving seat, a first detection hole is provided on the fixed seat, the detection valve and the pressure relief valve are both installed on the fixed seat and are both communicated with the first detection hole; and a detection seat, the detection seat is respectively fixed on the moving seat and the fixed seat, a detection through hole is provided on the detection seat, and the detection through hole is communicated with the first detection hole; both ends of the corrugated pipe are respectively inserted into the detection through holes of the two detection seats.

[0005] Preferably, the positioning device includes: a positioning rod, the positioning rod is installed on the positioning hole of the detection bottom plate, and the positioning holes are arranged in an array; and a positioning screw, the positioning screw is installed on the positioning rod and the end presses on one end of the force measuring bottom plate.

[0006] Preferably, the force measuring device includes: a dynamometer or a force measuring sensor, the dynamometer or the force measuring sensor is fixed on the force measuring bottom plate and is connected to the moving seat.

[0007] Furthermore, a pressure gauge is further included, the pressure gauge is fixed on the moving seat and is communicated with the detection through hole for detecting the pressure inside the corrugated pipe.

[0008] Preferably, a plurality of detection sealing rings are further included, the detection sealing rings are fixed on the detection through holes of the detection seats for sealing the detection through holes and the corrugated pipe.

[0009] Preferably, it further includes a connecting sealing ring, which is installed between the detection base, the moving base and the fixed base.

[0010] Preferably, it further includes an end sealing ring, which is installed on the shoulder in the detection through hole and is arranged opposite to the end of the corrugated pipe.

[0011] Further, the end sealing ring is a polytetrafluoroethylene sealing ring.

[0012] Preferably, it further includes a tension device, which includes: a ball screw, which is rotatably installed on the detection bottom plate; a screw nut, which is installed on the ball screw; a connecting seat, which is installed on the force measuring bottom plate and is connected to the screw nut; and a hand wheel, which is fixed at one end of the ball screw.

[0013] Further, it further includes a counter, which is installed on the ball screw.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] A corrugated pipe testing instrument provided by the present invention detects the tension of the corrugated pipe through a force measuring device and a movable force measuring bottom plate, with convenient detection, accurate detection results, simple structure and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a corrugated pipe testing instrument;

[0017] Figure 2 is a front view of a corrugated pipe testing instrument;

[0018] Figure 3 is an assembly schematic diagram of the moving base, the fixed base and the detection base;

[0019] Figure 4 is Figure 3 a cross-sectional view of;

[0020] Figure 5 is a schematic structural diagram of the moving base;

[0021] Figure 6 is a cross-sectional view of the fixed base;

[0022] Figure 7 is a cross-sectional view of the detection base;

[0023] Figure 8 is a schematic structural diagram of the positioning device. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be further described in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] As Figures 1 to 8 shown, a corrugated pipe testing instrument includes a detection valve 51, a pressure relief valve 52, a detection base plate 1, a force measuring base plate 61, a positioning device, a force measuring device, a moving seat 4, a fixed seat 2, and a detection seat 3.

[0027] Four feet 12 are installed at the bottom of the detection base plate 1, and two linear guide rails 13 are symmetrically installed at the top. A fixed slider 14 and a detection slider 15 are installed on the linear guide rails 13. The force measuring base plate 61 is fixed on the fixed slider 14, the moving seat 4 is fixed on the detection slider 15, the fixed seat 2 is fixed at one end of the detection base plate 1, and the moving seat 4 is located between the fixed seat 2 and the force measuring base plate 61. A plurality of positioning holes 11 are also arranged in an array on the top of the detection base plate 1, and the positioning holes 11 are threaded holes.

[0028] As Figure 8 shown, the positioning device includes a positioning rod 62 and a positioning screw 63. The two ends of the positioning rod 62 are installed on the positioning holes 11 through screws. The positioning screw 63 is installed on the positioning rod 62 through threads, and two are symmetrically provided. The end of the positioning screw 63 presses on one end of the force measuring base plate 61 for positioning the force measuring base plate 61. The positioning screw 63 facilitates small-distance adjustment of the position of the force measuring base plate 61, and the positioning rod 62 and the positioning holes 11 facilitate large-distance adjustment of the position of the force measuring base plate 61.

[0029] The force measuring device includes a force gauge 59 or a force measuring sensor. The force gauge 59 is also a tensile testing machine. The force gauge 59 is fixed on the force measuring base plate 61, and the detection rod of the force gauge 59 is connected to the moving seat 4. When the moving seat 4 moves, the force can be detected. The force measuring sensor can record the detected force, and the reading is convenient and accurate.

[0030] As Figure 5 shown, a second detection hole 41, a pressure hole 43, and a communication hole 42 are provided on the moving seat 4. The first detection hole 22 is located on one side of the moving seat 4. The pressure hole 43 is located on the top of the moving seat 4. The communication hole 42 communicates with the second detection hole 41 and the pressure hole 43 respectively. A pressure gauge 53 is installed on the pressure hole 43, and the pressure gauge 53 is used to detect and display the pressure inside the corrugated pipe 9. A detection seat 3 is installed on the second detection hole 41.

[0031] As Figure 6 shown, a first detection hole 22 and an air inlet hole 21 are provided on the fixed seat 2. The first detection hole 22 is arranged opposite to the second detection hole 41. The first detection hole 22 is a through hole and communicates with the air inlet hole 21. The pressure relief valve 52 is fixed on the first detection hole 22, and the detection valve 51 is fixed on the air inlet hole 21. The pressure relief valve 52 can be a needle valve, and the pressure relief valve 52 is a ball valve.

[0032] As shown Figure 7 in the figure, the bottom of the detection seat 3 is provided with connecting studs 31 and end face sealing grooves 35, and the top is provided with a detection through hole 32. The detection through hole 32 is arranged along the axis and is a stepped hole. A number of hole sealing grooves 34 are provided in the detection through hole 32, and detection sealing rings 55 are installed in the hole sealing grooves 34. The detection sealing rings 55 are restricted in the hole sealing grooves 34. When the bellows 9 is inserted and pulled out, the detection sealing rings 55 will not be pulled out along with the bellows 9, which makes the installation of the bellows 9 convenient and can achieve the sealing between the bellows 9 and the detection through hole 32. The connecting studs 31 are respectively installed on the first detection hole 22 and the second detection hole 41, and a connecting sealing ring 57 is installed in the end face sealing groove 35. The connecting sealing ring 57 realizes the sealing between the detection seat 3 and the moving seat 4 and the fixed seat 2. An end sealing ring 56 is installed in the detection through hole 32. The end sealing ring 56 is made of polytetrafluoroethylene. Since the bellows 9 is a thin-walled tube, the end of the bellows 9 is relatively sharp. The sealing ring made of engineering plastic can not only achieve sealing but also is not easily damaged. Both ends of the bellows 9 are respectively inserted into the detection through holes 32 of the two detection seats 3.

[0033] During detection, first loosen the positioning rod 62, then insert both ends of the bellows 9 into the detection seats 3 on the fixed seat 2 and the detection seats 3 on the moving seat 4 respectively, then install the positioning rod 62, and adjust the positioning screw 63 so that the positioning screw 63 contacts the end of the force measuring base plate 61 but does not squeeze the force measuring base plate 61, so that the bellows 9 is in a free state, and adjust the dial of the force gauge 59 to zero. The detection valve 51 is connected to the air source. Open the detection valve 51, and high-pressure gas enters the air inlet hole 21, then enters the inside of the bellows 9 through the first detection hole 22 and the detection through hole 32, and enters the communication hole 42 and the pressure hole 43 through the second detection hole 41. The pressure gauge 53 displays the real-time pressure. Since the bellows 9 expands after being pressurized, the fixed seat 2 is fixed and immovable, while the moving seat 4 can move. Therefore, the bellows 9 pushes the moving seat 4 towards the force gauge 59, and the force gauge 59 detects the expansion force value generated by the current product. The detection is simple, convenient, and the detection structure is accurate and reliable. After the detection is completed, first close the detection valve 51, then open the pressure relief valve 52 to discharge the pressure, then remove the positioning rod 62, and finally remove the bellows 9.

[0034] Embodiment 2

[0035] Based on the above Embodiment 1, as Figure 1 and Figure 2As shown, the maximum tension that the bellows 9 can withstand under pressure is detected by a tension device. The tension device includes a ball screw 73, a screw nut 75, a connecting seat 74, a handwheel 78 and a counter 77. The two ends of the ball screw 73 are respectively equipped with a tail bearing seat 71 and an end bearing seat 76. The tail bearing seat 71 is installed on the other end of the detection base plate 1 through a first connecting block 72. The end bearing seat 76 is fixed on the top of the fixed seat 2. The counter 77 is installed on the ball screw 73 and connected to the end bearing seat 76. The handwheel 78 is installed at the end of the ball screw 73 and is located on one side of the counter 77. The counter 77 is used to record the number of rotations of the ball screw 73, thereby displaying the moving distance. The connecting seat 74 is installed on the force measuring base plate 61 through a second connecting block 64 and is connected to the screw nut 75. The screw nut 75 is installed on the ball screw 73.

[0036] During the test, the positioning rod 62 is removed, and then the hand wheel 78 is turned to stretch the bellows 9 by the movable seat 4. The pulling stroke can be known by observing the counter 77, the force value used for stretching can be known by the dynamometer 59, and whether the current bellows 9 is torn can be known by the pressure gauge 53. When the bellows 9 is torn, the pressure of the pressure gauge 53 drops, and the tension value detected at this time is the maximum tension value.

[0037] One tester realizes two tests, and has simple structure, convenient test, accurate and reliable test structure.

[0038] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. A corrugated pipe testing instrument for detecting the tension of a corrugated pipe, comprising a detection valve (51) and a pressure relief valve (52), characterized in that, Further included are: a detection base plate (1); a force measuring base plate (61), which is slidably mounted on the detection base plate (1); a positioning device, which is respectively connected to the force measuring base plate (61) and the detection base plate (1); a force measuring device, which is mounted on the force measuring base plate (61); a moving seat (4), which is slidably mounted on the detection base plate (1) and is connected to the force measuring device; a fixed seat (2), which is mounted on the detection base plate (1) and is arranged opposite to the moving seat (4). A first detection hole (22) is provided on the fixed seat (2). The detection valve (51) and the pressure relief valve (52) are both mounted on the fixed seat (2) and are both communicated with the first detection hole (22); and a detection seat (3), which is respectively fixed on the moving seat (4) and the fixed seat (2). A detection through hole (32) is provided on the detection seat (3), and the detection through hole (32) is communicated with the first detection hole (22); Both ends of the bellows (9) are respectively inserted into the detection through holes (32) of the two detection seats (3); The force measuring device includes: a force gauge (59); Wherein, after the bellows (9) is pressurized, it expands. The fixed seat (2) remains stationary, and the moving seat (4) moves, so that the bellows (9) pushes the moving seat (4) towards the force gauge (59), and the force gauge (59) detects the expansion force value generated by the current product.

2. The bellows testing instrument according to claim 1, wherein, The positioning device includes: a positioning rod (62), which is mounted on the positioning hole (11) of the detection base plate (1), and the positioning holes (11) are arranged in an array; and a positioning screw (63), which is mounted on the positioning rod (62) and the end presses on one end of the force measuring base plate (61).

3. The bellows testing instrument according to claim 1, wherein, Further included is a pressure gauge (53), which is fixed on the moving seat (4) and is communicated with the detection through hole (32) for detecting the pressure inside the bellows (9).

4. A corrugated pipe testing instrument according to claim 1, characterized in that, Further included are a plurality of detection sealing rings (55), which are all fixed on the detection through holes (32) of the detection seat (3) for sealing the detection through hole (32) and the bellows (9).

5. A bellows testing instrument according to claim 1, characterized in that, Further included is a connection sealing ring (57), which is mounted between the detection seat (3) and the moving seat (4) and the fixed seat (2).

6. A corrugated pipe testing instrument according to claim 1, characterized in that, Further included is an end sealing ring (56), which is mounted on the shoulder in the detection through hole (32) and is arranged opposite to the end of the bellows (9).

7. A corrugated pipe testing instrument according to claim 6, characterized in that, The end sealing ring (56) is a polytetrafluoroethylene sealing ring.

8. A corrugated pipe testing instrument according to any one of claims 1 to 6, characterized in that, Further included is a tension device, and the tension device includes: a ball screw (73), which is rotatably mounted on the detection base plate (1); a screw nut (75), which is mounted on the ball screw (73); Connecting seat (74), the connecting seat (74) is installed on the force measuring base plate (61) and connected to the lead screw nut (75); and Handwheel (78), the handwheel (78) is fixed to one end of the ball screw (73).

9. A bellows testing instrument according to claim 8, wherein, It further includes a counter (77), and the counter (77) is installed on the ball screw (73).

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