Polyethylene pipeline thickness detection device based on ultrasonic waves

Abstract

The utility model relates to the technical field of pipeline detection equipment, in particular to a polyethylene pipeline thickness detection device based on ultrasonic waves, which comprises a first clamp, a second clamp, a transmission mechanism and a measuring assembly, the first clamp and the second clamp are bilaterally symmetrical, arc-shaped grooves are arranged on opposite side surfaces of the first clamp and the second clamp, and the transmission mechanism is arranged in the arc-shaped grooves. The first clamp is driven by the transmission mechanism to move in the horizontal direction, the second clamp is fixed, the measuring assembly comprises a left side plate, a right side plate, a pin shaft, an ejector rod, a torsional spring, a baffle, a connecting piece, an ultrasonic probe and a roller, and during application, the first clamp is horizontally moved to be close to the second clamp until a pipeline is clamped; an ultrasonic probe on the measuring assembly is tightly attached to the to-be-detected pipeline to measure the thickness. According to the technical scheme, the polyethylene pipeline thickness detection device based on the ultrasonic waves is mainly provided, and the problem that a probe is not tightly attached to a pipeline when acting on different pipe diameters is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection equipment, in particular to a polyethylene pipeline thickness detection device based on ultrasonic waves. Background Art

[0002] Due to polyethylene's viscoelastic behavior and semi-crystalline structure, it is susceptible to cracking under extreme loads and environmental factors. Therefore, thickness testing is necessary for newly produced polyethylene pipes. Ultrasonic testing is an effective method for polyethylene pipe defect detection. An ultrasonic thickness gauge is an instrument used to measure material thickness, using the principle of ultrasonic pulse reflection. When an ultrasonic pulse emitted by a probe passes through the object being measured and reaches the material interface, the pulse is reflected back to the probe. The thickness of the material is determined by accurately measuring the propagation time of the ultrasonic wave in the material.

[0003] The detection device in the existing technology can only be applied to polyethylene pipes of the same diameter. In addition, for handheld ultrasonic thickness gauges that can act on pipes of different diameters, the device is prone to the situation where the probe and the pipe are not tightly fitted, thereby increasing the error of the thickness measurement indication and reducing the thickness measurement accuracy. Utility Model Content

[0004] The utility model aims to provide a polyethylene pipe thickness detection device based on ultrasonic waves, which solves the problem that the probe does not fit tightly to the pipe when acting on pipes of different diameters.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an ultrasonic-based polyethylene pipe thickness detection device includes a first clamp, a second clamp, a transmission mechanism, and a measuring assembly. The first clamp and the second clamp are symmetrical, and arc grooves are provided on the opposite sides of the first clamp and the second clamp. The first clamp is driven by the transmission mechanism to move in the horizontal direction, and the second clamp is fixed. The measuring assembly includes left and right side plates, a pin, a push rod, a torsion spring, a baffle, a connector, and an ultrasonic probe. and rollers, the side plates are fixedly connected to the arc grooves, the upper sections of the side plates are fixedly connected to the pin shafts, the lower sections of the push rods are hinged to the middle sections of the pin shafts, the torsion springs are fixedly connected between the push rods and the two side plates, the torsion springs are hooked at one end close to the push rods and rest against the front of the push rods, the baffles are fixedly connected to the upper ends of the side plates, the baffles rest against the rear of the push rods, the lower end of the connecting piece is fixedly connected to the upper end of the push rods, and the other end is provided with the ultrasonic probe, and the rollers are fixedly connected to both sides of the upper end of the connecting piece.

[0006] The effect of the above technical solution is that by changing the distance between the first clamp and the second clamp, it can be applied to polyethylene pipes of different diameters, and the hinged mandrel ensures the tightness between the ultrasonic probe and the pipe when clamping large-diameter pipes.

[0007] The utility model is further configured as follows: the transmission mechanism is arranged on the base, the motor output end of the transmission mechanism is connected to the ball screw, the outer wall of the ball screw is sleeved with a screw connecting seat, the upper end of the screw connecting seat is connected to an N-shaped door-type connecting seat, the outer walls of the sliding rod are sleeved below the two ends of the door-type connecting seat, and the upper end of the door-type connecting seat is fixedly connected to the first clamp.

[0008] By adopting the above technical solution, the ball screw is driven to drive the first clamp to move horizontally, and a strong driving force is provided to clamp the pipeline to be inspected.

[0009] The present invention is further configured such that the end of the ball screw is fixedly connected to a screw support seat, and the upper end of the screw support seat is fixedly connected to a second clamp.

[0010] By adopting the above technical solution, the position of the second clamp is fixed and maintained in a left-right symmetrical position with the first clamp.

[0011] The present invention is further configured such that there are multiple measuring components and the measuring components are distributed at intervals in the circumferential direction of the arc-shaped slot.

[0012] By adopting the above technical solution, the accuracy of thickness measurement is further guaranteed.

[0013] The present invention is further configured such that a scale is provided on the front of the first clamp and the second clamp along the direction of the arc groove.

[0014] By adopting the above technical solution, the scale can calibrate the angle of pipeline rotation, achieving the purpose of multi-angle monitoring of pressure pipelines, so as to adapt to the on-site operation intensity and step amplitude of different pipelines, thereby significantly improving on-site operability and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view of an embodiment;

[0016] Figure 2 This is a front view of the embodiment of the invention for clamping a pipeline with a minimum diameter to be inspected;

[0017] Figure 3 This is an embodiment Figure 2 A partial enlarged view of point A in the middle;

[0018] Figure 4 is a top view of an embodiment;

[0019] Figure 5It is a left view of the connection between the screw rod connecting seat and the door-type connecting seat in the embodiment.

[0020] In the figure: first fixture 1, second fixture 2, transmission mechanism 3, motor 31, ball screw 32, screw connecting seat 33, door-type connecting seat 34, slide rod 35, screw support seat 36, measuring component 4, side plate 41, pin 42, push rod 43, torsion spring 44, baffle 45, connector 46, ultrasonic probe 47, roller 48, arc groove 5, base 6, and pipeline to be inspected 7. DETAILED DESCRIPTION

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

[0022] Ultrasonic-based polyethylene pipe thickness detection device, such as Figure 1-5 As shown, it includes a first clamp 1, a second clamp 2, a transmission mechanism 3, and a measuring component 4. The first clamp 1 and the second clamp 2 are symmetrical, and arc grooves 5 are provided on the opposite sides of the first clamp 1 and the second clamp 2. The first clamp 1 is driven by the transmission mechanism 3 to move in the horizontal direction, and the second clamp 2 is fixed. The measuring component 4 includes left and right side plates 41, a pin 42, a push rod 43, a torsion spring 44, a baffle 45, a connecting piece 46, an ultrasonic probe 47 and a roller 48. The side plate 41 is fixedly connected to the arc groove 5, the upper section of the side plate 41 is fixedly connected to the pin 42, the lower section of the push rod 43 is hinged to the middle section of the pin 42, the torsion spring 44 is fixedly connected between the push rod 43 and the two side plates 41, the end of the torsion spring 44 close to the push rod 43 is hooked and rests in front of the push rod 43, and the baffle 45 is fixedly connected to the upper end of the side plate 41. The baffle 45 is against the rear of the push rod 43, the lower end of the connecting piece 46 is fixedly connected to the upper end of the push rod 43, and the other end is provided with the ultrasonic probe 47, and the roller 48 is fixedly connected to both sides of the upper end of the connecting piece 46. The transmission mechanism 3 is arranged on the base 6, and the output end of the motor 31 of the transmission mechanism is connected to the ball screw 32, and the outer wall of the ball screw 32 is sleeved with the screw connecting seat 33, and the upper end of the screw connecting seat 33 is connected to the n-shaped door-type connecting seat 34, and the outer wall of the sliding rod 35 is sleeved below the two ends of the door-type connecting seat 34, and the upper end of the door-type connecting seat 34 is fixedly connected to the first clamp 1, the end of the ball screw 32 is fixedly connected to the screw support seat 36, and the upper end of the screw support seat 36 is fixedly connected to the second clamp 2. There are multiple measuring components 4 and they are spaced apart in the circumferential direction of the arc groove 5. A scale is provided on the front of the first clamp 1 and the second clamp 2 along the direction of the arc groove.

[0023] Working principle: Start the transmission mechanism 3, and the rotation of the ball screw 32 drives the first clamp 1 to move horizontally towards the second clamp 2 until the pipe is clamped. When the first clamp 1 and the second clamp 2 are in close contact, the diameter of the pipe to be inspected 7 is the smallest. When the diameter becomes larger, the outer wall of the pipe to be inspected 7 squeezes the push rod 43. Under the action of the torsion spring 44, the push rod 43 presses the ultrasonic probe 47 against the pipe to be inspected.

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An ultrasonic-based polyethylene pipe thickness detection device, comprising a first clamp, a second clamp, a transmission mechanism, and a measuring assembly, characterized in that: The first clamp and the second clamp are symmetrical on the left and right, and arc grooves are provided on the opposite sides of the first clamp and the second clamp. The first clamp is driven by the transmission mechanism to move in the horizontal direction, and the second clamp is fixed. The measuring assembly includes left and right side plates, a pin shaft, a push rod, a torsion spring, a baffle, a connecting piece, an ultrasonic probe and a roller. The side plate is fixedly connected to the arc groove, the upper section of the side plate is fixedly connected to the pin shaft, the lower section of the push rod is hinged to the middle section of the pin shaft, the torsion spring is fixedly connected between the push rod and the two side plates, the end of the torsion spring close to the push rod is hook-shaped and abuts against the front of the push rod, the baffle is fixedly connected to the upper end of the side plate, and the baffle abuts against the rear of the push rod, the lower end of the connecting piece is fixedly connected to the upper end of the push rod, and the other end is provided with the ultrasonic probe, and the roller is fixedly connected to both sides of the upper end of the connecting piece.

2. The ultrasonic polyethylene pipe thickness detection device according to claim 1, characterized in that: The transmission mechanism is arranged on the base, the motor output end of the transmission mechanism is connected to the ball screw, the outer wall of the ball screw is sleeved with a screw connecting seat, the upper end of the screw connecting seat is connected to an N-shaped door-type connecting seat, the outer wall of the sliding rod is sleeved below the two ends of the door-type connecting seat, and the upper end of the door-type connecting seat is fixedly connected to the first clamp.

3. The ultrasonic polyethylene pipe thickness detection device according to claim 2, characterized in that: The end of the ball screw is fixedly connected to the screw support seat, and the upper end of the screw support seat is fixedly connected to the second clamp.

4. The ultrasonic-based polyethylene pipe thickness detection device according to claim 1, characterized in that: There are multiple measuring components, which are spaced apart and distributed in the circumferential direction of the arc-shaped slot.

5. The ultrasonic-based polyethylene pipe thickness detection device according to claim 1, characterized in that: A scale is provided on the front of the first clamp and the second clamp along the direction of the arc groove.

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