Defect detection equipment for polyethylene inner pipe production and processing

Abstract

The utility model provides defect detection equipment for polyethylene inner pipe production and processing, which comprises a platform mounting plate, an arc-shaped mounting frame, a vector network analyzer and a waveguide probe, the arc-shaped mounting frame is fixedly arranged at the top end of the platform mounting plate, and the vector network analyzer is mounted on one side of the arc-shaped mounting frame in an inserting manner through an inserting tongue; compared with the handheld detection, the photoelectric mileage measuring device has the advantages that the mode of pushing the polyethylene inner pipe to move is adopted, the movement stability is good, and the photoelectric mileage measuring device can be used for measuring the photoelectric mileage of the polyethylene inner pipe. The motion fluctuation error of the polyethylene inner pipe relative to the probe holder is reduced to the minimum, and the detection precision is improved; and meanwhile, a top guide cover and a clamping mounting part are further arranged, the clamping mounting part is clamped with the inner pipe limiting side plate, the upper portion of the polyethylene inner pipe is conveniently limited, and the polyethylene inner pipe has good stability in the moving process.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyethylene inner tube processing and relates to defect detection equipment for the production and processing of polyethylene inner tubes. Background Art

[0002] Non-metallic materials such as polyethylene pipes are used in the manufacture of pipelines. Due to their good flexibility and corrosion resistance, they are being used in more and more medium and low-pressure gas pipeline networks in cities and towns. During the processing of polyethylene inner pipes, welding technology is required to connect the connecting end to the pipeline. In order to prevent a series of safety hazards caused by changes in the material structure and performance of the pipeline welding area, defect detection is required. Existing technology detection, such as CN202123315972.4, provides a polyethylene pipeline defect detection system for detecting defects in the welded joints of polyethylene pipelines. This technical solution uses the principle of polyethylene pipeline reflectivity to microwaves for defect detection. By measuring the changes in the reflected field (amplitude or phase) of the microwaves with a vector network analyzer, it can be determined whether the welded joint has defects, thereby achieving non-destructive testing of polyethylene pipelines.

[0003] The disadvantage of the above-mentioned detection system is that it requires manual handheld inspection. Since the handheld detection equipment moves along the length of the pipeline, it will cause unstable movement, and the up and down fluctuation errors will affect the detection accuracy. For this reason, we designed a defect detection equipment for the production and processing of polyethylene inner pipes. Summary of the Invention

[0004] The purpose of the utility model is to provide a defect detection device for the production and processing of polyethylene inner tubes, so as to solve the problems raised in the above background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions: defect detection equipment for the production and processing of polyethylene inner tubes, including a platform mounting plate, an arc-shaped mounting frame, a vector network analyzer and a waveguide probe, wherein the arc-shaped mounting frame is fixedly arranged on the top of the platform mounting plate, the vector network analyzer is installed on one side of the arc-shaped mounting frame by plugging with a tongue, a mileage wheel mounting seat is provided at the top notch of the arc-shaped mounting frame, a photoelectric mileage measuring wheel is provided at the bottom end of the mileage wheel mounting seat, a coaxial cable is connected to the top interface of the vector network analyzer, a probe holder is provided at one end of the coaxial cable, the waveguide probe is located inside the probe holder and the waveguide probe is electrically connected to the coaxial cable;

[0006] A strip groove is provided at the horizontal plate of the arc-shaped mounting frame, and two inner tube limiting side plates are slidably installed inside the strip groove. An inner tube central symmetry strip is provided in the middle of the strip groove, and the inner tube central symmetry strip corresponds to the photoelectric odometer wheel up and down.

[0007] The aforementioned defect detection equipment for polyethylene inner tube production and processing also includes a top guide hood, one end of which is provided with a snap-fit mounting portion that engages with the inner tube limiting side plate. This arrangement facilitates positioning of the upper portion of the polyethylene inner tube, ensuring good stability during movement.

[0008] In the aforementioned defect detection equipment for polyethylene inner tube production and processing, the vector network analyzer's computer interface is equipped with a data transmission cable, one end of which is equipped with a USB port. This configuration facilitates connection to the computer chassis and allows for better interpretation of test results using software installed on the computer.

[0009] In the aforementioned defect detection equipment for polyethylene inner tube production and processing, the USB interface housing is provided with a chassis retaining bracket, the bottom end of which is provided with multiple pins. This arrangement is intended to improve the stability and firmness of the connection between the USB interface and the computer chassis, preventing poor contact.

[0010] In the aforementioned defect detection equipment for polyethylene inner tube production and processing, the probe holder is equipped with a mounting bracket connecting rod at the rear end, one end of which is provided with an integrally formed limiting insert. This configuration facilitates quick installation and positioning of the probe holder while ensuring good connection stability.

[0011] In the aforementioned defect detection equipment for polyethylene inner tube production and processing, the curved mounting frame has three slots on its side, and the mounting frame connecting rod connects to one of these slots via a stop bar. This arrangement facilitates insertion of the mounting frame connecting rod into slots at different locations, allowing for adjustment of the spacing between the mounting frame connecting rod and the central symmetric strip of the inner tube to accommodate polyethylene inner tubes of varying diameters.

[0012] Compared with the prior art, the present invention has the following advantages for defect detection equipment for polyethylene inner tube production and processing: a curved mounting frame is fixedly mounted on the top of a platform mounting plate, a vector network analyzer is installed on one side of the curved mounting frame via a tongue-type plug-in connection, a strip-shaped slot is provided on the horizontal plate of the curved mounting frame, and two inner tube limiting side plates are slidably installed within the strip-shaped slot to limit the position of the polyethylene inner tube; a probe holder is connected to one of the plug-in slots of the curved mounting frame via a mounting frame connecting rod and a limiting insert, facilitating rapid installation and positioning of the probe holder while ensuring good connection stability; compared with handheld detection, the method of pushing the polyethylene inner tube to move has good movement stability, minimizing the movement fluctuation error of the polyethylene inner tube relative to the probe holder and improving detection accuracy; a top guide cover and a snap-fit mounting portion are also provided, which snap-fit the mounting portion to the inner tube limiting side plates to facilitate limiting the upper portion of the polyethylene inner tube, ensuring good stability during movement of the polyethylene inner tube; By setting a data transmission line at the computer interface of the vector network analyzer, a USB interface is set at one end of the data transmission line, a chassis limit frame is set at the shell of the USB interface, and a plurality of pin columns are set at the bottom end of the chassis limit frame; it is convenient to better connect to the computer chassis, and the detection result can be better identified by the software program installed on the computer; the stability and firmness of the connection between the USB interface and the computer chassis are improved, and poor contact is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the defect detection equipment for the production and processing of polyethylene inner tubes of the present invention.

[0014] Figure 2 The utility model is a structural diagram of a vector network analyzer which is a defect detection device for producing and processing polyethylene inner tubes.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of an arc-shaped mounting frame of a defect detection device for producing and processing polyethylene inner tubes according to the present invention.

[0016] Figure 4 It is a three-dimensional structural diagram of the connecting rod of the mounting frame of the defect detection equipment for the production and processing of the polyethylene inner tube of the utility model.

[0017] In the figure, 1. Platform mounting plate; 2. Arc-shaped mounting bracket; 3. Center symmetrical strip of inner tube; 4. Strip-shaped slot; 5. Inner tube limit side plate; 6. Odometer mounting seat; 7. Photoelectric odometer wheel; 8. Vector network analyzer; 9. Coaxial cable; 10. Probe holder; 11. Waveguide probe; 12. Mounting bracket connecting rod; 13. Data transmission line; 14. Chassis limit bracket; 15. Pin column; 16. USB interface; 17. Plug slot; 18. Top guide cover; 19. Snap-fit mounting part; 20. Limit strip. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model is a defect detection device for the production and processing of polyethylene inner tubes;

[0020] Embodiment: It includes a platform mounting plate 1, an arc-shaped mounting frame 2, a vector network analyzer 8 and a waveguide probe 11. The arc-shaped mounting frame 2 is fixedly arranged on the top of the platform mounting plate 1. The vector network analyzer 8 is installed on one side of the arc-shaped mounting frame 2 by plugging in a tongue. A mileage wheel mounting seat 6 is provided at the top notch of the arc-shaped mounting frame 2. A photoelectric mileage measuring wheel 7 is provided at the bottom end of the mileage wheel mounting seat 6. A coaxial cable 9 is connected to the top interface of the vector network analyzer 8. A probe holder 10 is provided at one end of the coaxial cable 9. The waveguide probe 11 is located inside the probe holder 10 and the waveguide probe 11 is electrically connected to the coaxial cable 9; a strip slot 4 is provided at the horizontal plate of the arc-shaped mounting frame 2, and two inner tube limiting side plates 5 are slidably installed inside the strip slot 4. An inner tube central symmetric strip 3 is provided in the middle of the strip slot 4, and the inner tube central symmetric strip 3 corresponds to the photoelectric mileage measuring wheel 7 up and down.

[0021] The above embodiment also includes a top guide cover 18, one end of which is provided with a snap-fit mounting portion 19 that snaps into engagement with the inner tube limiting side plate 5. This technical feature facilitates limiting the upper portion of the polyethylene inner tube, ensuring good stability during movement.

[0022] Embodiment 2: In order to facilitate connection to a computer chassis, it is convenient to read the amplitude curve of the vector network analyzer 8 through the LabVIEW software on the computer.

[0023] Specifically, a data transmission line 13 is provided at the computer interface of the vector network analyzer 8, and a USB interface 16 is provided at one end of the data transmission line 13; a chassis limit frame 14 is provided at the outer shell of the USB interface 16, and a plurality of pins 15 are provided at the bottom end of the chassis limit frame 14.

[0024] During specific use: when the amplitude curve of the vector network analyzer 8 changes, the LabVIEW software records the number of pulses sent by the photoelectric sensor of the photoelectric odometer wheel to ensure that the data acquisition of the amplitude curve of the vector network analyzer 8 and the pulse recording of the photoelectric sensor are synchronized; the LabVIEW software calculates the size of the defect based on the number of pulse signals, the circumference of the photoelectric odometer wheel and the amplitude curve.

[0025] In this embodiment, in order to better install the probe holder 10 on the arc-shaped mounting frame 2 and facilitate the correspondence with the polyethylene inner tube, a mounting frame connecting rod 12 is installed at the tail of the probe holder 10, and an integrally formed limiting strip 20 is provided at one end of the mounting frame connecting rod 12; three plug-in slots 17 are opened on the side of the arc-shaped mounting frame 2, and the mounting frame connecting rod 12 is connected to one of the plug-in slots 17 through the limiting strip 20.

[0026] During use: place the produced and processed polyethylene inner tube between the two inner tube limiting side plates 5 and correspond to the inner tube central symmetry strip 3, the photoelectric odometer wheel 7 of the odometer wheel mounting seat 6 contacts the polyethylene inner tube, and then through the top guide cover 18, the snap-fit mounting portion 19 is connected to the inner tube limiting side plates 5, which is convenient for limiting the upper part of the polyethylene inner tube, so that the polyethylene inner tube has good stability during movement, the probe holder 10 is installed to the arc-shaped mounting frame 2 through the mounting frame connecting rod 12, start the vector network analyzer 8 for calibration, and perform testing. By loading external mechanical power, the polyethylene inner tube can move along the length direction, thereby realizing non-destructive testing of the polyethylene inner tube.

[0027] When in use, the USB interface 16 can be connected to an external computer via the chassis limit bracket 14 , and the computer can be equipped with LabVIEW software.

[0028] In this embodiment, the waveguide probe 11 adopts a WR-42 microwave horn-shaped waveguide tube, the transmitting end of which is horn-shaped, and the photoelectric odometer wheel 7 is a measuring wheel structure with a photoelectric sensor.

[0029] Matters not described in detail in this specification constitute prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art to which the present invention relates may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A defect detection device for the production and processing of polyethylene inner tubes, comprising a platform mounting plate (1), an arc-shaped mounting frame (2), a vector network analyzer (8) and a waveguide probe (11), wherein the arc-shaped mounting frame (2) is fixedly arranged on the top of the platform mounting plate (1), and the vector network analyzer (8) is installed on one side of the arc-shaped mounting frame (2) by plugging with a tongue, characterized in that: A mileage wheel mounting seat (6) is provided at the top notch of the arc-shaped mounting frame (2), a photoelectric mileage measuring wheel (7) is provided at the bottom end of the mileage wheel mounting seat (6), a coaxial cable (9) is connected to the top interface of the vector network analyzer (8), a probe holder (10) is provided at one end of the coaxial cable (9), the waveguide probe (11) is located inside the probe holder (10), and the waveguide probe (11) is electrically connected to the coaxial cable (9); A strip-shaped slot (4) is provided at the transverse plate of the arc-shaped mounting frame (2), two inner tube limiting side plates (5) are slidably installed inside the strip-shaped slot (4), an inner tube central symmetry strip (3) is provided in the middle of the strip-shaped slot (4), and the inner tube central symmetry strip (3) corresponds to the photoelectric mileage measuring wheel (7) in upper and lower directions.

2. The defect detection equipment for the production and processing of polyethylene inner tubes according to claim 1 is characterized in that: It also includes a top guide cover (18), one end of which is provided with a snap-fit mounting portion (19), and the snap-fit mounting portion (19) is snap-fitted with the inner tube limiting side plate (5).

3. The defect detection equipment for the production and processing of polyethylene inner tubes according to claim 1, characterized in that: A data transmission line (13) is provided at the computer interface of the vector network analyzer (8), and a USB interface (16) is provided at one end of the data transmission line (13).

4. The defect detection equipment for the production and processing of polyethylene inner tubes according to claim 3, characterized in that: A chassis limiting frame (14) is provided at the outer shell of the USB interface (16), and a plurality of pin posts (15) are provided at the bottom end of the chassis limiting frame (14).

5. The defect detection equipment for the production and processing of polyethylene inner tubes according to claim 1, characterized in that: A mounting frame connecting rod (12) is installed at the tail of the probe holder (10), and an integrally formed limiting insert (20) is provided at one end of the mounting frame connecting rod (12).

6. The defect detection equipment for the production and processing of polyethylene inner tubes according to claim 5, characterized in that: Three plug-in slots (17) are provided on the side of the arc-shaped mounting frame (2), and the mounting frame connecting rod (12) is connected to one of the plug-in slots (17) via a limiting insert strip (20).

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