Defect detection device for joint of polyethylene gas pipeline

Abstract

The utility model provides a polyethylene gas pipeline joint defect detection device which comprises a detection table, a round hole plate is arranged at the upper end of the detection table, an outer gear ring is rotatably arranged in a round groove formed in the right side of the round hole plate, the outer gear ring and the round hole plate are installed in a matched mode, and two installation plates are arranged on the right side of the outer gear ring. First electric push rods are arranged on the opposite inner side faces of the two mounting plates correspondingly, detection probes are arranged at the telescopic ends of the two first electric push rods correspondingly, a circumferential rotation driving mechanism for driving the detection probes to rotate circumferentially is arranged at the upper end of the circular hole plate, and a guide conveying mechanism is arranged in the detection table. According to the polyethylene gas pipeline joint defect detection device disclosed by the utility model, defects of polyethylene gas pipeline joints with different diameters can be flexibly detected without more probes, the maintenance cost of equipment can be obviously reduced, the detection application range of the equipment is expanded, and various detection requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyethylene gas pipeline joint detection technical field, especially relates to a polyethylene gas pipeline joint defect detection device. BACKGROUND

[0002] Polyethylene gas pipeline joint defect detection device adopts ultrasonic detection technology and it is a kind of very effective nondestructive testing method, it detects the defect inside pipeline joint by emitting and receiving ultrasonic signal.

[0003] The existing polyethylene gas pipeline joint defect detection device propagates high-frequency sound wave in material, when meeting the interface (such as air-material interface, crack, bubble etc.) of different medium, reflection, refraction or scattering will occur, the ultrasonic signal reflected back is received by same or another transducer, by analyzing the intensity and time delay of these echo signals, the position and size of defect can be determined, after the signal received is amplified, filtered and digitized, it is transmitted to computer or other display device, thereby detecting the defect inside pipeline joint, in order to comprehensively detect polyethylene gas pipeline joint defect, usually need to set multiple probes to detect simultaneously, and because the position of probe is fixed, only the defect of polyethylene gas pipeline joint of specific diameter can be coupled to detect, increase the cost and complexity of equipment, also cannot adapt to pipeline joint of different diameter, limit the application range of equipment, and the maintenance and replacement cost of multiple probes is higher, once a probe has a problem, the whole detection process will be affected. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a polyethylene gas pipeline joint defect detection device for the deficiency of prior art, can detect the defect of polyethylene gas pipeline joint of different diameter flexibly without more probes, can significantly reduce the maintenance cost of equipment, expand the detection application range of equipment, satisfy various detection needs.

[0005] To solve the above technical problems, the utility model adopts the technical scheme: a kind of polyethylene gas pipeline joint defect detection device, including detection table, the upper end of detection table is provided with round hole plate, round groove of being opened in the right side of round hole plate is rotationally arranged with outer gear ring, outer gear ring is cooperatively installed with round hole plate, the right side of outer gear ring is provided with two mounting plates, the opposite inner side of two mounting plates is provided with electric push rod one, the telescopic end of two electric push rod one is provided with detection probe, the front and back positions of two detection probes are corresponding, the upper end of round hole plate is provided with circumferential rotation driving mechanism of driving detection probe circumferential rotation, the inside of detection table is provided with guiding conveying mechanism, circumferential rotation driving mechanism includes rotationally arranged on the upper end of round hole plate rotation column, gear is fixedly sleeved on the outer arc surface of rotation column, gear is engagedly connected with outer gear ring, the left side of the upper end of round hole plate is provided with motor, the output shaft of motor is connected with the left end of rotation column by coupling, the upper end of detection table is provided with display screen.

[0006] As a further improvement of the utility model, the lower end of the detection table is provided with a support frame, and the detection table and the support frame are fixed by welding. The lower end of the support frame is provided with support feet at four corners respectively.

[0007] As a further improvement of the utility model, the guiding conveying mechanism includes two sliding blocks slidingly arranged in the inside of the detection table. The upper end of each sliding block is provided with a frame plate. A plurality of conveying rollers are rotationally arranged in the inside of each frame plate. The lower end of the detection table is provided with an adjusting unit for driving the conveying rollers to move up and down. The adjusting unit includes a connecting plate arranged at the lower end of the detection table. Two electric push rods two are arranged in the inside of the connecting plate. The telescopic end of each electric push rod two is connected with the lower end of the adjacent sliding block.

[0008] As a further improvement of the utility model, the front side of the detection table is provided with a control processor. The motor, the detection probe, the electric push rod one, the electric push rod two and the display screen are electrically connected with the control processor.

[0009] Compared with the prior art, the utility model has the beneficial effects as follows:

[0010] First, by the need to detect the polyethylene gas pipeline through the external conveying mechanism to the left side of the conveying roller, and make it through the hole plate inside the hole and continue to move to the right side of the conveying roller, and make the polyethylene gas pipeline joint moves between the two detection probe, then stop the polyethylene gas pipeline conveying, the polyethylene gas pipeline joint and detection probe coating coupling agent, ensure that the ultrasonic wave can be effectively from the probe to the polyethylene gas pipeline joint, then by the control processor control open electric push rod and detection probe operation, telescopic end drive both sides of the detection probe close to the outer arc surface of the pipeline light contact, and then by the control panel control open motor operation, output shaft rotation drive gear on the rotating column rotation, and drive the outer tooth ring detection probe do circular motion, so that the flexible to different size of polyethylene gas pipeline to determine whether the defect, without more probe can be flexible to different diameter of polyethylene gas pipeline joint defect detection, can significantly reduce the maintenance cost of equipment, expand the detection range of equipment, meet a variety of detection needs.

[0011] Second, by the control panel control open electric push rod two operation, telescopic end drive the conveying roller on the sliding block to move up to cooperate with the two sides of the detection probe on the hole plate can realize the transmission detection of different size of polyethylene gas pipeline, improve the flexibility of the detection device.

[0012] Third, by the support frame and support foot can realize the stable support of the detection device, improve the stability of the detection device, ensure the detection quality of the polyethylene gas pipeline joint.

[0013] Fourth, by the control processor can be convenient to control the electrical devices on the detection device, convenient for personnel use. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in detail below combining with the drawings and specific embodiment.

[0015] Figure 1 It is the structure schematic diagram of the utility model;

[0016] Figure 2 It is the structure schematic diagram of the utility model A place amplification;

[0017] Figure 3 It is the front view structure schematic diagram of the utility model;

[0018] Figure 4 It is the hole plate upper view structure schematic diagram of the utility model.

[0019] In the figure: 101, detection platform; 102, support frame; 103, control processor; 104, display screen; 201, round hole plate; 202, motor; 203, rotating column; 204, gear; 205, outer tooth ring; 206, mounting plate; 207, electric push rod one; 208, detection probe; 301, frame plate; 302, conveying roller; 303, sliding block; 304, connecting plate; 305, electric push rod two. DETAILED DESCRIPTION

[0020] For better understanding of the present application, the content of the present application will be further clearly described below in combination with examples, but the protection content of the present application is not limited to the following examples only. In the following description, a large number of specific details are given in order to provide a more complete understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details.

[0021] As shown in Figure 1 , 3 , a polyethylene gas pipeline joint defect detection device, including detection platform 101, the upper end of detection platform 101 is provided with round hole plate 201, the round groove opened in the right side of round hole plate 201 is provided with outer tooth ring 205 rotatingly, the right side of outer tooth ring 205 is provided with two mounting plates 206, the opposite inner sides of two mounting plates 206 are both provided with electric push rod one 207, the telescopic ends of two electric push rod one 207 are both provided with detection probe 208, the upper end of round hole plate 201 is provided with circumferential rotation driving mechanism for driving detection probe 208 to rotate circumferentially, the inside of detection platform 101 is provided with guiding conveying mechanism, guiding conveying mechanism includes two sliding blocks 303 slidingly arranged in the inside of detection platform 101, the upper ends of two sliding blocks 303 are both provided with frame plate 301, the left and right positions of two frame plates 301 are corresponding, the insides of two frame plates 301 are both provided with a plurality of conveying rollers 302 rotatingly, the lower end of detection platform 101 is provided with adjusting unit for driving conveying rollers 302 to move up and down, adjusting unit includes connecting plate 304 arranged at the lower end of detection platform 101, the inside of connecting plate 304 is provided with two electric push rod two 305, the telescopic ends of two electric push rod two 305 are respectively connected with the lower ends of adjacent sliding blocks 303, the upper end of detection platform 101 is provided with display screen 104.

[0022] As shown in Figure 1 , 2 , 4, circumferential rotation driving mechanism includes rotating column 203 rotatingly arranged at the upper end of round hole plate 201, gear 204 is fixedly sleeved on the outer arc surface of rotating column 203, gear 204 is meshed and connected with outer tooth ring 205, the left side of the upper end of round hole plate 201 is provided with motor 202, the output shaft of motor 202 is connected with the left end of rotating column 203 through a shaft coupling.

[0023] As Figure 1 The front side of the detection table 101 is provided with a control processor 103, and the motor 202, the detection probe 208, the electric push rod one 207, the electric push rod two 305 and the display screen 104 are all electrically connected with the control processor 103.

[0024] The polyethylene gas pipeline to be detected is conveyed to the left conveying roller 302 through an external conveying mechanism, and the polyethylene gas pipeline joint is moved between the two detection probes 208, and then the conveying of the polyethylene gas pipeline is stopped, the coupling agent is applied on the polyethylene gas pipeline joint and the detection probe 208, so that the ultrasonic wave can be effectively transmitted from the probe to the polyethylene gas pipeline joint, then the control processor 103 is controlled to open the electric push rod one 207 and the detection probe 208, the telescopic end drives the two detection probes 208 to approach each other and slightly contact the outer arc surface of the pipeline, then the control panel is controlled to open the motor 202, the output shaft drives the gear 204 on the rotating column 203 to rotate, and drives the detection probe 208 on the outer gear ring 205 to do circular motion, the high-frequency sound wave is generated by the detection probe 208 and propagated in the polyethylene gas pipeline joint, and when the high-frequency sound wave meets cracks and bubbles, reflection, refraction or scattering occurs, the reflected ultrasonic wave signal is received by the transducer integrated in the detection probe 208 and is presented to the control processor 103, the strength and time delay of the echo signal are analyzed by the control processor 103, so that the position and size of the defect can be determined, and after the received signal is amplified, filtered and digitized, it is converted and presented on the display screen 104, so that the internal condition of the pipeline joint can be more intuitively displayed, and whether the polyethylene gas pipeline of different sizes has defects can be flexibly determined.

[0025] When the size of the polyethylene gas pipeline changes, the control panel is controlled to open the electric push rod two 305, the telescopic end drives the conveying roller 302 on the sliding block 303 to move upward and cooperate with the two detection probes 208 on the round hole plate 201, so that the polyethylene gas pipeline of different sizes can be conveyed and detected.

[0026] According to another embodiment of the present application, as Figure 1 The lower end of the detection table 101 is provided with a support frame 102, and the lower end of the support frame 102 is provided with support feet at four corners, so that the detection device can be stably supported and the stability of the detection device can be improved.

[0027] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited, and other modifications or equivalent replacements of the technical solutions of the present application made by those skilled in the art should be covered in the scope of the claims of the present application, as long as they do not deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A polyethylene gas pipeline joint defect detection device, comprising a detection table (101), characterized in that: A circular hole plate (201) is provided at the upper end of the detection platform (101), an outer gear ring (205) is rotatably provided in a circular groove opened on the right side of the circular hole plate (201), two mounting plates (206) are provided on the right side of the outer gear ring (205), electric push rods (207) are provided on the opposite inner side surfaces of the two mounting plates (206), and detection probes (208) are provided on the telescopic ends of the two electric push rods (207), a circumferential rotation driving mechanism for driving the detection probe (208) to rotate circumferentially is provided at the upper end of the circular hole plate (201), and a guide conveying mechanism is provided inside the detection platform (101).

2. A polyethylene gas pipeline joint defect detection device according to claim 1, characterized in that: The circular rotation drive mechanism comprises a rotating column (203) rotatably arranged on the upper end of the circular hole plate (201); a gear (204) is fixedly sleeved on the outer arc surface of the rotating column (203); the gear (204) is meshedly connected with an outer gear ring (205); a motor (202) is arranged on the left side of the upper end of the circular hole plate (201); and an output shaft of the motor (202) is connected to the left end of the rotating column (203) via a coupling.

3. A polyethylene gas pipeline joint defect detection device according to claim 2, characterized in that: The guide conveying mechanism comprises two sliding blocks (303) slidably arranged inside the detection platform (101), the upper ends of the two sliding blocks (303) are each provided with a frame plate (301), the interiors of the two frame plates (301) are each rotatably provided with a plurality of conveying rollers (302), and the lower end of the detection platform (101) is provided with an adjustment unit for driving the conveying rollers (302) to move up and down.

4. A polyethylene gas pipeline joint defect detection device according to claim 3, characterized in that: The adjustment unit comprises a connecting plate (304) arranged at the lower end of the detection platform (101), two electric push rods (305) are arranged inside the connecting plate (304), and the telescopic ends of the two electric push rods (305) are respectively connected to the lower ends of adjacent sliding blocks (303).

5. A polyethylene gas pipeline joint defect detection device according to claim 4, characterized in that: A display screen (104) is provided at the upper end of the detection platform (101).

6. The polyethylene gas pipeline joint defect detection device according to claim 1, characterized in that: A support frame (102) is provided at the lower end of the detection platform (101), and support legs are respectively provided at the four corners of the lower end of the support frame (102).

7. The polyethylene gas pipeline joint defect detection device according to claim 5, characterized in that: A control processor (103) is provided on the front side of the detection platform (101), and the motor (202), the detection probe (208), the first electric push rod (207), the second electric push rod (305) and the display screen (104) are all electrically connected to the control processor (103).

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