CN218469810U

CN218469810U - Novel steel pipe wall thickness detects device

Info

Publication number: CN218469810U
Application number: CN202123287892.2U
Authority: CN
Inventors: 倪洪诚
Original assignee: Shanghai Rayquay Fluid Technology Co ltd
Current assignee: Shanghai Rayquay Fluid Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-02-10
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a novel steel pipe wall thickness detects device, it relates to steel pipe detection technical field. It includes ultrasonic transducer, electric actuator, the probe bracket, the guide rail, the lead screw, step motor and V type supporting shoe, ultrasonic transducer fixes in electric actuator, ultrasonic transducer and electric actuator install on the probe bracket, wear to be equipped with the lead screw in the probe bracket, probe bracket and screw connection, the one end of lead screw is provided with step motor, step motor passes through gear and screw connection, the probe bracket slides and sets up on the guide rail, the side at V type supporting shoe is installed to the guide rail, be provided with the V type groove that is used for the centering to place the steel pipe that awaits measuring on the V type supporting shoe, the guide rail parallels with V type groove. The utility model discloses can the multiple spot detect, improve detection efficiency, guarantee measurement accuracy, improve product quality, extensive applicability, application prospect is wide.

Description

Novel steel pipe wall thickness detects device

Technical Field

The utility model relates to a steel pipe detects technical field, concretely relates to novel steel pipe wall thickness detects device.

Background

At present, the wall thickness of the steel pipe used in a specific occasion is very high, the thickness deviation is expected to be controlled within the range of 0.01-0.04mm, and nondestructive detection is needed one by one, the diameter of the steel pipe is usually very small, generally less than 12mm, and the measurement from the inside of the steel pipe is difficult due to the small inner diameter.

The existing nondestructive testing tools mainly comprise a mechanical contact mode, a magnetic effect mode, an eddy current mode and an ultrasonic mode. The mechanical contact mode usually adopts the existing conventional instrument, such as a dial indicator, as a measuring instrument, a metal rod and the like are contacted with the inner wall and the outer wall of the steel pipe, the transmission of the change of the wall thickness is realized through the rigidity of the rod, and the measured value is obtained through the dial indicator. The magnetic effect mode is to detect the wall thickness value by establishing the strength of a magnetic field after the magnetic field passes through the wall of the steel pipe. The eddy current is an induced eddy current generated in the wall of the steel pipe by a coil, and is used for measuring the wall thickness. The principle of ultrasonic wall thickness measurement is to utilize two reflections formed by sound waves on two surfaces of a steel pipe wall, and obtain a measured value of the wall surface by measuring the time difference of the two reflections and combining the speed of the sound waves in the steel pipe wall.

Aiming at the detection of the small-diameter high-precision special steel pipe, on one hand, multi-point detection is carried out on the circumference of each diameter; on the other hand, multi-point detection is also required in the longitudinal direction. For example, the invention discloses a method for verifying and comparing ultrasonic waves used for measuring the wall thickness of a seamless steel pipe, which is disclosed in the Chinese patent application No. 201910412264.0, and describes a method for verifying an ultrasonic instrument used for measuring the wall thickness of the seamless steel pipe by using a specially manufactured sample pipe as a verification tool. The utility model discloses a novel steel pipe wall thickness detection device that china utility model patent application number 201620492457.3 disclosed, a device that adopts the ultrasonoscope as the wall thickness detection instrument is described, the device includes that one is the positioning mechanism who falls the eight characters, when the steel pipe falls into the device by upper portion, is fixed a position by the device, ultrasonic thickness measuring instrument was along radial transmission ultrasonic wave and implement the wall thickness measurement this moment, the measurement finishes, under the effect that actuates the mechanism, the eight characters of falling loosen, the steel pipe falls into lower part unloading mechanism. The inverted splayed clamping mechanism adopted by the scheme can be automatically clamped and is high in speed, the circumferential multi-point detection required by the small-diameter steel pipe is realized, the circumferential detection cannot be implemented due to the fact that no rotating mechanism is arranged, and a special moving mechanism needs to be arranged for the axial multi-point so that the sensor can move.

The research of the online wall thickness detection device of the small-caliber seamless steel tube in Oncun et al provides a wall thickness detection device capable of measuring the small-caliber seamless steel tube online, the device adopts gamma rays as a wall thickness measuring tool, and the device comprises a photomultiplier, a scintillator, a gamma ray adjusting optical axis instrument, a size calibrator, a ray distribution adjusting block, a radiation source and the like. When gamma rays pass through the steel pipe, the wall thickness of the steel pipe can be measured according to the attenuation of the gamma rays, the method depends on the gamma rays to realize the detection of the whole circumferential direction at one time, the circumferential wall thickness distribution can be quickly obtained, and meanwhile, if the pipe is moved along the length direction, the axial wall thickness distribution can also be quickly obtained. However, the gamma rays adopted by the technology belong to the field of radioactivity control, are very inconvenient to use, have high cost and are difficult to be accepted by common use places.

In order to solve the problems, it is particularly necessary to design a novel small-diameter steel pipe wall thickness detection device.

Disclosure of Invention

To exist not enough on the prior art, the utility model aims at providing a novel steel wall thickness detects device, simple structure, reasonable in design can the multiple spot detection, improves detection efficiency, guarantees measurement accuracy, improves product quality, extensive applicability, and the practicality is strong, easily uses widely.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a novel steel pipe wall thickness detection device, includes ultrasonic transducer, electric actuator, probe bracket, guide rail, lead screw, step motor and V type supporting shoe, and ultrasonic transducer fixes in electric actuator, and ultrasonic transducer and electric actuator install on probe bracket, wear to be equipped with the lead screw in the probe bracket, and probe bracket and screw connection, the one end of lead screw is provided with step motor, and step motor passes through gear and screw connection, and probe bracket slides and sets up on the guide rail.

Preferably, the V-shaped supporting block is provided with a V-shaped groove for centering the steel pipe to be tested; the V-shaped groove is internally provided with a steel pipe limiting block for limiting the steel pipe to be detected, and the position of the steel pipe limiting block is the same as the initial point of the ultrasonic probe.

Preferably, the guide rail is arranged on the side surface of the V-shaped supporting block and is parallel to the V-shaped groove in the V-shaped supporting block.

Preferably, the stepping motor implements position control through a programmable PLC controller, and the programmable stepping motor is combined with the lead screw, so that the ultrasonic probe can be moved, the probe can be accurately positioned, and the accurate positioning of the axial position can be realized.

The utility model has the advantages that: the device can realize multi-point automatic detection, improves the detection efficiency, ensures the measurement precision, greatly improves the product quality, is not limited in use occasions, has wider applicability, reduces the detection cost and has wide application prospect.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a bottom view of fig. 1.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-2, the following technical solutions are adopted in the present embodiment: the utility model provides a novel steel pipe wall thickness detection device, including ultrasonic transducer 1, electric actuator 2, probe bracket 3, guide rail 4, lead screw 5, step motor 6 and V type supporting shoe 7, ultrasonic transducer 1 is fixed in electric actuator 2, ultrasonic transducer 1 and electric actuator 2 are installed on probe bracket 3, wear to be equipped with lead screw 5 in the probe bracket 3, probe bracket 3 is connected with lead screw 5, lead screw 5's one end is provided with step motor 6, step motor 6 passes through the gear and is connected with lead screw 5, step motor 6's rotary motion passes through the gear and transmits for lead screw 5, probe bracket 3 slide and set up on guide rail 4.

It is worth noting that a V-shaped groove 9 for centering and placing a steel pipe 8 to be tested is arranged on the V-shaped supporting block 7; and a steel pipe limiting block for limiting the steel pipe 8 to be detected is arranged in the V-shaped groove 9, and the position of the steel pipe limiting block is the same as the initial point of the ultrasonic probe 1.

It is worth noting that the guide rail 4 is installed on the side face of the V-shaped supporting block 7, the guide rail 4 is parallel to a V-shaped groove 9 in the V-shaped supporting block 7, and the guide rail 4 is matched with the V-shaped groove 9, so that the position relation between the ultrasonic probe 1 and the steel pipe 8 to be measured can be guaranteed, and the measurement accuracy is guaranteed.

The stepping motor 6 implements position control through a programmable PLC controller, and the programmable stepping motor is combined with a lead screw, so that the ultrasonic probe can be moved, the probe can be accurately positioned, and the accurate positioning of the axial position can be realized.

In addition, the electric actuator 2 can be replaced by a spring to compress the ultrasonic probe, so that the ultrasonic probe is attached to the steel pipe.

This embodiment is measured the wall thickness of the steel pipe 8 that awaits measuring by ultrasonic probe 1, and ultrasonic probe 1 fixes in an actuator by electric drive, and this electric actuator 2 can produce an upper and lower displacement, lets ultrasonic probe 1 contact the surface of the steel pipe 8 that awaits measuring, perhaps breaks away from the steel pipe surface, and ultrasonic probe 1 and electric actuator 2 are fixed on probe bracket 3 to rely on a guide rail 4 to realize along the axial removal of the steel pipe that awaits measuring. The movement of the probe bracket 3 is realized by the rotation of the lead screw 5, and a thread matching pair is arranged between the lead screw 5 and the probe bracket 3 to convert the rotary motion of the lead screw 5 into the linear motion of the probe bracket 3.

The working principle of the specific embodiment is as follows: before use, the steel pipe 8 to be measured is placed in a V-shaped groove 9 in a V-shaped supporting block 7, is centered through the action of the V-shaped groove 9, is provided with a measuring point position according to the requirement of measurement along the length direction of the pipe, and is input into a PLC (programmable logic controller); when the device is used, the steel pipe 8 to be measured is close to the limiting block, measurement is started, the PLC controls the movement of the stepping motor 6, and measurement of different positions is achieved. When the ultrasonic probe 1 moves to a set position, the electric actuator 2 moves the ultrasonic probe 1 downwards to enable the probe to contact the surface of the steel pipe 8 to be measured, and then measurement and recording are started; after the wall thickness measurement of the point is completed, the ultrasonic probe 1 is lifted under the action of the electric actuator 2, the PLC controls the rotation of the stepping motor 6, the ultrasonic probe 1 moves to a new position under the drive of the screw 5, the measurement is continued, and the measured data is recorded in the ultrasonic wall thickness meter. When different circumferential points of the steel pipe need to be measured, the steel pipe can be manually rotated to a specified angle, and the actions are repeated.

The steel pipe to be measured is fixed by the V-shaped groove, the steel pipe can be quickly placed in or moved away by the aid of the V-shaped groove structure, the steel pipe to be measured can adapt to steel pipes with different lengths, straightness of the steel pipe to be measured can be guaranteed, and accordingly the position of wall thickness measurement is guaranteed; the device adopts the actuator to compress tightly super god wave probe, makes ultrasonic transducer can reciprocate, ensures measuring accuracy, adopts step motor to combine the mode removal ultrasonic transducer of lead screw, screw nut and its axial position of accurate control simultaneously, can realize programming control, realizes the high-efficient automatic measurement of steel pipe multiple spot.

The specific embodiment is used for wall thickness detection of small-diameter high-precision special steel pipes, can effectively overcome the problem that multi-point detection cannot be performed or the use occasions are limited in the prior art, and can be used for detecting the small-diameter steel pipes with very high wall thickness precision requirements by adopting a nondestructive detection method, so that the outgoing quality of products is greatly improved, the detection efficiency is improved, the measurement precision is stabilized, and the wide market application prospect is achieved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel steel pipe wall thickness detection device, a serial communication port, including ultrasonic transducer (1), electric actuator (2), probe bracket (3), guide rail (4), lead screw (5), step motor (6) and V type supporting shoe (7), ultrasonic transducer (1) is fixed in electric actuator (2), ultrasonic transducer (1) and electric actuator (2) are installed on probe bracket (3), wear to be equipped with lead screw (5) in probe bracket (3), probe bracket (3) are connected with lead screw (5), the one end of lead screw (5) is provided with step motor (6), step motor (6) are connected with lead screw (5) through the gear, probe bracket (3) slide and set up on guide rail (4), guide rail (4) install the side at V type supporting shoe (7), V type groove (9) in be provided with and carry out spacing steel pipe stopper to await measuring steel pipe (8), the position of steel pipe stopper is the same with ultrasonic transducer (1)'s initial point.

2. The novel steel pipe wall thickness detection device according to claim 1, wherein a V-shaped groove (9) for centering the steel pipe (8) to be detected is arranged on the V-shaped supporting block (7).

3. The novel steel pipe wall thickness detection device according to claim 1, wherein the V-shaped groove (9) is parallel to the guide rail (4).