Galvanized steel pipe inner wall defect quality detection device

Abstract

The invention provides a galvanized steel pipe inner wall defect quality detection device, and relates to the technical field of pipe body inner wall detection, the galvanized steel pipe inner wall defect quality detection device comprises a detection mechanism used for extending into a galvanized steel pipe for detection, and an equipment external connection mechanism used for receiving data sent back by the detection mechanism, the equipment external connection mechanism is mounted at one end of the detection mechanism, and the detection mechanism comprises a connection extension pipe, a probing part and a laser transmitting and receiving device. When the device is used, the connecting extension pipe is arranged to drive the probing part to gradually go deep into the galvanized steel pipe, and meanwhile, all the laser emitting and receiving devices synchronously emit laser to the inner wall of the galvanized steel pipe and receive the reflected laser for distance measurement; the laser transmitting and receiving device transmits received data to the operation platform through the equipment external connection mechanism to generate a spacing curve, whether the inner wall of the galvanized steel pipe has defects or not is judged through fluctuation of the spacing curve, and the effects of reducing interference and improving accuracy are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe inner wall detection, and in particular to a device for detecting inner wall defects of a galvanized steel pipe.

[0002] Background technology Galvanized steel pipe is a welded steel pipe with hot-dip or electroplated zinc layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and extend their service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, oil heaters, condenser coolers, coal distillation and washing oil exchangers for chemical coking equipment, and pier pipe piles and support frames for mine tunnels.

[0003] At present, the main means of defect detection for products is still based on visual inspection equipment. When using visual inspection equipment to detect defects on the inner wall of galvanized pipes, because the brightness inside the galvanized pipe is not enough, supplementary light is required to enable the visual inspection equipment to perform normal inspection.

[0004] However, the inner wall of the galvanized light tube is smooth. When supplementary lighting is applied, the light will be reflected multiple times on the inner wall of the galvanized steel tube, causing multiple shadows and other interference. In addition, the supplementary light will also cause the photosensitive part of the visual inspection equipment to be exposed. The above problems seriously affect the efficiency and error rate of quality inspection.

[0005] To this end, the present application proposes a galvanized steel pipe inner wall defect quality detection device for reducing the error in the detection of galvanized steel pipe inner wall defects. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a galvanized steel pipe inner wall defect quality detection device for solving the problem that the appearance detection equipment mentioned in the prior art is easily disturbed.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides a galvanized steel pipe inner wall defect quality detection device, comprising:

[0008] A detection mechanism, the detection mechanism is used to extend into the interior of the galvanized steel pipe for detection;

[0009] An external device connection mechanism, which is used to receive data sent back by the detection mechanism and is installed at one end of the detection mechanism;

[0010] The detection mechanism includes a connecting extension tube, a probe portion and a laser transmitting and receiving device;

[0011] The probe part is installed at the end of the connecting extension tube, and the laser transmitting and receiving device is installed on the surface of the probe part;

[0012] The connecting extension tube is used to push the probe into the depth of the inner wall of the galvanized steel pipe, and the laser emitting and receiving device emits laser to the inner wall of the galvanized steel pipe to detect defects;

[0013] The line of the laser transmitting and receiving device enters the interior of the external connection mechanism of the equipment along the interior of the connecting extension tube to realize data transmission;

[0014] The device external connection mechanism transmits data to an external operating platform to generate intuitive data.

[0015] Preferably, the probe portion includes a metal connecting tube, a detector mounting tube and a metal anti-collision head, the metal connecting tube is fixedly connected to the end of the connecting extension tube, the detector mounting tube is connected to the end of the metal connecting tube, and the metal anti-collision head is connected to the end of the detector mounting tube;

[0016] The outer surface of the detector installation tube is provided with protection grooves at equal intervals, and the laser emitting and receiving device is led out from the inside of the protection grooves.

[0017] Preferably, the laser transmitting and receiving device includes a transmitting and receiving probe and a transmitter, the transmitting and receiving probe is installed inside all protective grooves, the transmitter is arranged on the inner wall of the metal connecting tube, a connecting optical fiber connection is arranged between the transmitting and receiving probe and the transmitter, a data cable is arranged on the transmitter, and the data cable extends from the inside of the connecting extension tube to the inside of the external mechanism of the equipment.

[0018] Preferably, there are multiple transmitting and receiving probes, each of which is fan-shaped, and the detection surfaces of all the transmitting and receiving probes are circular;

[0019] A sheath tube is arranged on the outer surface of the connecting optical fiber to which all the transmitting and receiving probes are connected, so as to be integrated into a cable and introduced into the transmitter.

[0020] Preferably, the outer surfaces of the metal connecting pipe and the metal anti-collision head are both provided with equidistantly distributed probe positioning devices, the probe positioning devices are retractable, and the ends of the probe positioning devices are in contact with the inner wall of the galvanized steel pipe.

[0021] Preferably, the probe positioning device comprises a plurality of sleeve tubes which are socketed with each other, an elastic part is provided at the connection of each sleeve tube, a rotatable roller is provided at the end of the sleeve tube which contacts the inner wall of the galvanized steel pipe, and the rotation direction of the roller is the same as the axial direction of the galvanized steel pipe.

[0022] Preferably, the connecting extension tube and the detector installation tube are both bendable hoses.

[0023] Preferably, the end of the metal anti-collision head is provided with a pipe wall cleaning air hole, and the interior of the metal anti-collision head is provided with an air pipe joint;

[0024] A slope chamfer is provided on one side of the protection groove close to the metal anti-collision head, and a dust cleaning hole is provided on the other end of the protection groove;

[0025] A supporting mechanism is plugged into the air pipe joint, and the supporting mechanism is respectively connected with the pipe wall cleaning air hole and the dust cleaning air hole.

[0026] Preferably, the supporting mechanism comprises an air pipe and a binding belt, wherein the air pipe is respectively plugged into an air pipe joint and communicated with a dust cleaning air hole;

[0027] The outer surface of the gas delivery pipe is provided with a plurality of support frames at equal intervals, and the support frames respectively support the inside of the detector installation pipe and the connecting extension pipe;

[0028] The connecting optical fiber is supported by a supporting frame, and the data cable is attached to the surface of the gas pipe and is bound with a binding tape for wiring.

[0029] Preferably, the device external connection mechanism includes a switching box, and the switching box is provided with a power supply interface, an expansion interface, an air pump interface, a laser rangefinder, a display screen and a setting button;

[0030] The adapter box is provided with a mainboard inside, and the data cable, power supply interface, expansion interface, laser rangefinder, display screen and setting button are all connected to the mainboard;

[0031] The power supply interface is connected to a data platform or a PC;

[0032] The air pump interface is communicated with the air delivery pipe, and the air pump interface is connected to an external air pump;

[0033] The laser of the laser rangefinder is directed toward the end of the galvanized steel pipe.

[0034] As described above, the device for detecting inner wall defects of a galvanized steel pipe according to the present invention has the following beneficial effects:

[0035] 1. The present invention drives the probe part to gradually penetrate into the interior of the galvanized steel pipe by setting a connecting extension tube. At the same time, all laser emitting and receiving devices synchronously emit lasers to the inner wall of the galvanized steel pipe and receive reflected lasers for ranging. The laser emitting and receiving devices transmit the received data to the operating platform through the external mechanism of the equipment to generate a spacing curve. Whether the inner wall of the galvanized steel pipe has defects is judged by the fluctuation of the spacing curve, thereby achieving the effect of reducing interference and improving accuracy.

[0036] 2. The present invention sets a protective groove on the outer surface of the detector mounting tube, and sets the transmitting and receiving probe inside the protective groove. Therefore, when performing detection, the transmitting and receiving probe recessed in the protective groove can avoid friction with the inner wall of the galvanized steel pipe, thereby protecting the transmitting and receiving probe. At the same time, the protective groove can limit the detection angle of the transmitting and receiving probe to avoid the intersection of the detection angles of multiple transmitting and receiving probes.

[0037] 3. The present invention arranges pipe wall cleaning air holes at the end of the metal anti-collision head, arranges dust cleaning air holes on the side of the protective groove, and arranges an air supply pipe connected to an air pump, so that the air flow is ejected through the pipe wall cleaning air holes and the dust cleaning air holes. When performing detection, the pipe wall cleaning air holes can clean the inner wall of the galvanized steel pipe, and the dust cleaning air holes can clean the outer surface of the transmitting and receiving probes, thereby achieving the effect of further improving the detection accuracy.

[0038] 4. The present invention configures the connecting extension tube and the detector installation tube into a hose, which can bend along with the curvature of the galvanized steel pipe when detecting the inside of the galvanized steel pipe, thereby enabling detection of the inner wall of the galvanized steel pipe with a curvature.

[0039] 5. The present invention provides a support frame on the outer surface of the gas transmission pipe to support the connecting extension pipe and the detector installation pipe respectively, so that the connecting extension pipe and the detector installation pipe can be bent while maintaining hardness, so that the transmitting and receiving probes can easily pass through the inside of the galvanized steel pipe.

[0040] 6. The present invention arranges a probe positioning device on the outer surface of the metal connecting pipe and the metal anti-collision head, and the probe positioning device is used to collide with the inner wall of the galvanized steel pipe, so that all transmitting and receiving probes are kept equidistant from the inner wall of the galvanized steel pipe, thereby improving the measurement accuracy. At the same time, the probe positioning device is retractable, so that it can adapt to galvanized steel pipes of different inner diameters, thereby achieving further accuracy and the effect of adapting to galvanized steel pipes of different diameters.

[0041] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Shown is a schematic structural diagram of the present invention.

[0043] Figure 2 Shown is a schematic structural diagram of the detection mechanism of the present invention.

[0044] Figure 3 Shown is a schematic diagram of the internal structure of the connecting extension tube of the present invention.

[0045] Figure 4 Shown is a schematic diagram of the structural installation of the transmitter of the present invention.

[0046] Figure 5 Shown is a schematic diagram of the internal structure of the detector mounting tube of the present invention.

[0047] Figure 6 Shown as the present invention Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0048] Figure 7 Shown as the present invention Figure 1 Schematic diagram of the enlarged structure at B in the middle.

[0049] Figure 8 Shown is a schematic diagram of the internal structure of the metal anti-collision head of the present invention.

[0050] Fig. 9 Shown is a schematic structural diagram of the probe positioning device of the present invention.

[0051] Component number description

[0052] 1. Detection mechanism; 101. Connection extension tube; 102. Probe; 1021. Metal connection tube; 1022. Detector installation tube; 1023. Metal anti-collision head; 1024. Protection groove; 1025. Slope chamfer; 1026. Pipe wall cleaning air hole; 1027. Dust removal air hole; 1028. Air pipe joint; 103. Laser transmitting and receiving device; 1031. Transmitting and receiving probe; 1032. Transmitter; 1033. Connection Optical fiber; 1034, data cable; 104, probe positioning device; 1041, sleeve tube; 1042, elastic member; 1043, roller; 2. Equipment external connection mechanism; 201, adapter box; 202, power supply interface; 203, expansion interface; 204, air pump interface; 205, laser rangefinder; 206, display screen; 207, setting button; 3. Support mechanism; 301, gas pipe; 302, support frame; 303, strap. DETAILED DESCRIPTION

[0053] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0054] See also Figures 1 to 9. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0055] like Figure 1-Figure 9 As shown, the present invention provides a galvanized steel pipe inner wall defect quality detection device, comprising: a detection mechanism 1 and an equipment external mechanism 2. The detection mechanism 1 is used to extend to the inside of the galvanized steel pipe for detection; the equipment external mechanism 2 is used to receive data sent back by the detection mechanism 1, and the equipment external mechanism 2 is installed at one end of the detection mechanism 1, and the equipment external mechanism 2 also exchanges data with an external platform, so as to establish a smooth curve inside the galvanized pipe according to the data detected by the detection mechanism 1.

[0056] The detection mechanism 1 includes a connecting extension tube 101, a probe 102 and a laser emitting and receiving device 103. The probe 102 is installed at the end of the connecting extension tube 101, and the laser emitting and receiving device 103 is installed on the surface of the probe 102. During the detection, the connecting extension tube 101 is used to push the probe 102 into the depth of the inner wall of the galvanized steel pipe, and the laser emitting and receiving device 103 emits a laser signal to the inner wall of the galvanized steel pipe. The laser signal is reflected by the inner wall of the galvanized steel pipe to obtain distance information, and the defects of the inner wall of the galvanized steel pipe are detected by the change of distance information. The line of the laser emitting and receiving device 103 enters the interior of the equipment external mechanism 2 along the interior of the connecting extension tube 101 to realize data transmission. The equipment external mechanism 2 transmits the data to the external operating platform to generate intuitive data.

[0057] The specific logic is as follows: when the inner wall of the galvanized steel pipe is smooth, the data obtained by the laser emitting and receiving device 103 is not fluctuating. When the inner wall of the galvanized steel pipe has protrusions, cracks, or depressions, the distance measured by the laser emitting and receiving device 103 will change, causing the data to fluctuate. Based on the fluctuation, it can be determined whether there are defects on the inner wall of the galvanized steel pipe. This detection method can effectively avoid interference caused by factors such as light and image errors, and improve the accuracy of detection.

[0058] The device can be used in conjunction with a machine tool with a fixed component. The machine tool fixes the galvanized steel pipe and transmits the galvanized steel pipe to move, so that the galvanized steel pipe and the insertion part 102 are continuously plugged in and deeply connected.

[0059] like Figure 3 and Figure 4 As shown, in some embodiments, the probe 102 of the present invention includes a metal connecting tube 1021, a detector mounting tube 1022 and a metal anti-collision head 1023. The metal connecting tube 1021 is fixedly connected to the end of the connecting extension tube 101, the detector mounting tube 1022 is connected to the end of the metal connecting tube 1021, and the metal anti-collision head 1023 is connected to the end of the detector mounting tube 1022. The outer surface of the detector mounting tube 1022 is equidistantly provided with protective grooves 1024, and the laser transmitting and receiving device 103 is led out from the inside of the protective grooves 1024. When in use, the metal connecting tube 1021 and the metal anti-collision head 1023 can protect the detector mounting tube 1022 when entering the interior of the galvanized steel pipe, thereby preventing the laser transmitting and receiving device 103 from colliding with the inner wall of the galvanized steel pipe. At the same time, the protective groove 1024 is provided to further protect the laser transmitting and receiving device 103. Avoid friction between the outer surface of the laser emitting and receiving device 103 and the inner wall of the galvanized steel pipe when entering the interior of the galvanized steel pipe, which may cause scratches and affect the accuracy of detection.

[0060] like Figure 5As shown, in some embodiments, the laser transmitting and receiving device 103 of the present invention includes a transmitting and receiving probe 1031 and a transmitter 1032, wherein the transmitter 1032 is used to generate laser, and the laser is emitted to the inner wall of the galvanized steel pipe through the transmitting and receiving probe 1031. The reflected laser is received by the transmitting and receiving probe 1031, and the received information is transmitted to the transmitter 1032. It uses the principle of constant light speed to measure the distance, and the distance can be known by calculating the time from the occurrence of a beam of light to the return. The transmitting and receiving probe 1031 is installed inside all protective grooves 1024. The transmitter 1032 is set on the inner wall of the metal connecting tube 1021, and the transmitter 1032 is protected by the hard metal connecting tube 1021. A connecting optical fiber 1033 is set between the transmitting and receiving probe 1031 and the transmitter 1032 to form a complete optical path, wherein the connecting optical fiber 1033 is used in conjunction with one in and one out. The laser generated by the transmitter 1032 enters the transmitting and receiving probe 1031 through the inlet and is emitted, and the reflected signal received by the transmitting and receiving probe 1031 is transmitted back to the transmitter 1032 through the outlet. The transmitter 1032 is provided with a data line 1034, which extends from the inside of the connecting extension tube 101 to the inside of the device external mechanism 2. To form data interaction, the transmitter 1032 transmits the generated detection data to the device external mechanism 2, and then the device external mechanism 2 forwards the data to the data platform, and the data platform establishes a curve model based on the obtained data to record the quality of the inner wall of the galvanized steel pipe.

[0061] like Figure 5 As shown, in some embodiments, the number of the transmitting and receiving probes 1031 of the present invention is multiple, the transmitting and receiving probes 1031 are fan-shaped, and the detection surfaces of all the transmitting and receiving probes 1031 are circular. By setting multiple transmitting and receiving probes 1031 to transmit and receive signals at the same time, when detecting, it is only necessary to enter the interior of the galvanized steel pipe at a uniform speed to achieve circular detection, without the need for repeated entry and exit for detection, thereby improving the efficiency of detection.

[0062] The outer surface of the connecting optical fiber 1033 connected to all the transmitting and receiving probes 1031 is provided with a sheath tube to be integrated into a cable and introduced into the transmitter 1032. The interior of this cable is provided with armor to protect the connecting optical fiber 1033 and prevent the connecting optical fiber 1033 from breaking. At the same time, it can also make all the connecting optical fibers 1033 more concentrated, which is convenient for access to the interior of the transmitter 1032.

[0063] like Figure 1-Figure 5As shown, in some embodiments, the outer surfaces of the metal connecting pipe 1021 and the metal anti-collision head 1023 of the present invention are both provided with equidistantly distributed probe positioning devices 104. The probe positioning device 104 is retractable, and the end of the probe positioning device 104 conflicts with the inner wall of the galvanized steel pipe. When performing detection, all probe positioning devices 104 conflict with the inner wall of the galvanized steel pipe with the same force, so that the probe part 102 can be located at the axis inside the galvanized steel pipe. Ensure that the distance between the transmitting and receiving probes 1031 installed on the detector mounting tube 1022 and the inner wall of the galvanized steel pipe is basically equal, and there is no need to compensate for the distance difference during detection, thereby improving the convenience of detection. At the same time, the retractable probe positioning device 104 can conflict with galvanized steel pipes of different inner diameters, thereby improving adaptability. Especially when the hardness of the detector mounting tube 1022 is not high, the effect is more obvious when supporting it.

[0064] like Figure 6 and Fig. 9 As shown, in some embodiments, the probe positioning device 104 of the present invention includes a plurality of sleeve tubes 1041 that are sleeved with each other, and an elastic member 1042 is provided at the connection of each sleeve tube 1041. The sleeve tube 1041 is pressed by the elastic member 1042 so that all the sleeve tubes 1041 maintain the maximum length when not under pressure. The end of the sleeve tube 1041 that contacts the inner wall of the galvanized steel pipe is provided with a rotatable roller 1043, and the rotation direction of the roller 1043 is the same as the axial direction of the galvanized steel pipe. When the probe 102 penetrates into the interior of the galvanized steel pipe, the roller 1043 can reduce the friction between the sleeve tube 1041 and the inner wall of the galvanized steel pipe, and is used to protect the inner wall and equipment of the galvanized steel pipe. The diameter of the roller 1043 does not exceed the diameter of the thinnest sleeve tube 1041, so that when the sleeve tube 1041 shrinks, it can shrink to the maximum extent to avoid interference caused by the roller 1043.

[0065] In some embodiments, the connecting extension tube 101 and the detector installation tube 1022 of the present invention are both flexible hoses. When the galvanized steel pipe is bent, the rigid detection equipment cannot detect the inner wall of the galvanized steel pipe. For this reason, the connecting extension tube 101 and the detector installation tube 1022 are configured as hoses, so that they can be completely bent along with the galvanized steel pipe, thereby improving the adaptability of the device.

[0066] like Figure 1 , Figure 5 , Figure 7 and Figure 8As shown, in some embodiments, the end of the metal anti-collision head 1023 of the present invention is provided with a pipe wall cleaning air hole 1026, and the metal anti-collision head 1023 is provided with an air pipe joint 1028. A slope chamfer 1025 is provided on one side of the protection groove 1024 close to the metal anti-collision head 1023, and a dust cleaning air hole 1027 is provided at the other end of the protection groove 1024. A support mechanism 3 is plugged into the air pipe joint 1028, and the support mechanism 3 is connected to the pipe wall cleaning air hole 1026 and the dust cleaning air hole 1027 respectively.

[0067] When testing, there is a high probability that residual substances will remain inside the galvanized steel pipe, and these residual substances will seriously affect the penetration of the detection mechanism 1 and interfere with the detection of the laser transmitting and receiving device 103. For this reason, air is supplied to the pipe wall cleaning air hole 1026 and the dust cleaning air hole 1027 through the air supply pipe 301, so that the air flow is ejected from the pipe wall cleaning air hole 1026 and the dust cleaning air hole 1027 at a high speed. Among them, the air flow distributed by the pipe wall cleaning air hole 1026 is used to blow away the dust and impurities on the inner wall of the galvanized steel pipe. When the pipe wall cleaning air hole 1026 blows away the dust, the dust may diffuse inside the galvanized steel pipe and cover the outer surface of the transmitting and receiving probe 1031. At this time, the role of the dust cleaning air hole 1027 is to blow away the dust covering the transmitting and receiving probe 1031 to ensure that the surface of the transmitting and receiving probe 1031 remains clean. The provided slope chamfer 1025 is used to make the protection groove 1024 avoid a smooth slope surface, so that dust can be easily blown out of the protection groove 1024 and avoid dust accumulation in the corners of the protection groove 1024.

[0068] like Figure 3-Figure 5 As shown, in some embodiments, the support mechanism 3 of the present invention includes an air pipe 301 and a binding band 303, and the air pipe 301 is respectively plugged with the air pipe joint 1028 and communicated with the dust cleaning air hole 1027. When the air pipe 301 is ventilated, the air flow will be blown out through the air pipe 301 to the pipe wall cleaning air hole 1026 and the dust cleaning air hole 1027 at the same time, so as to clean the dust and clean the transmitting and receiving probe 1031. The air pipe joint 1028 is provided for convenient connection with the air pipe 301, and the air flow blown away by the air pipe 301 is expanded and fully blown out from the pipe wall cleaning air hole 1026, thereby increasing the cleaning area. The blowing angle of the pipe wall cleaning air hole 1026 is preferably expanded outward to further improve the cleaning efficiency.

[0069] When the connecting extension tube 101 and the probe 102 are hoses, a plurality of support frames 302 are equidistantly arranged on the outer surface of the gas delivery pipe 301 to form a fishbone or snakebone structure. The support frames 302 support the inside of the detector installation tube 1022 and the connecting extension tube 101, respectively, so that the connecting extension tube 101 and the detector installation tube 1022 can bend while maintaining rigidity, avoiding the inability to pass through the inside of a long galvanized steel pipe due to insufficient hardness.

[0070] At the same time, the connecting optical fiber 1033 is supported by the supporting skeleton 302 to avoid the shaking of the connecting optical fiber 1033 and the small bending arc. According to the characteristics of optical fiber transmission, the smaller the bending angle of the optical fiber, the greater the attenuation of the signal. Therefore, it is necessary to limit the connecting optical fiber 1033 by the supporting skeleton 302 to ensure the stability of signal transmission. The data cable 1034 is attached to the surface of the gas pipe 301 and is tied with the binding tape 303 for wiring to improve the aesthetics and safety. At the same time, when passing through the inside of the galvanized steel pipe, the bundled data cable 1034 and the gas pipe 301 can further improve the hardness of the gas pipe 301 and enhance the supporting ability of the supporting skeleton 302 to the connecting extension pipe 101.

[0071] like Figure 1 As shown, in some embodiments, the external connection mechanism 2 of the device of the present invention includes a transfer box 201, and the transfer box 201 is provided with a power supply interface 202, an expansion interface 203, an air pump interface 204, a laser rangefinder 205, a display screen 206 and a setting button 207. A mainboard is provided inside the transfer box 201, and the data line 1034, the power supply interface 202, the expansion interface 203, the laser rangefinder 205, the display screen 206 and the setting button 207 are all connected to the mainboard for realizing signal interaction, and the signal is connected to the data platform or PC through the power supply interface 202. According to the logic of the large model, the data is converted into a data curve or a three-dimensional model for real-time display, which is used to intuitively display the state of the inner wall of the galvanized steel pipe, and the data of each detection unit is set through the setting button 207, and the data can also be directly displayed through the display screen 206.

[0072] The air pump interface 204 is communicated with the air pipe 301, and the air pump interface 204 is connected to an external air pump for inputting high-pressure gas into the interior of the air pipe 301 to achieve the effect of cleaning the dust inside the galvanized steel pipe.

[0073] The laser of the laser rangefinder 205 is directed to the end of the galvanized steel pipe, and its function is to cooperate with the laser emitting and receiving device 103. The specific functions are as follows: when the laser emitting and receiving device 103 penetrates into the inside of the galvanized steel pipe, the laser rangefinder 205 is used to cooperate with the laser emitting and receiving device 103 to measure the penetration distance. When a defect is found inside the galvanized steel pipe, the location of the defect can be clearly known. When the defect location is found, the defective part of the galvanized steel pipe can be cut off according to the use requirements, and the good part can be used to reduce the cost of remelting.

[0074] In summary, the galvanized steel pipe inner wall defect quality detection device of the present invention drives the probe part 102 to gradually penetrate into the interior of the galvanized steel pipe by setting a connecting extension tube 101. At the same time, all laser emitting and receiving devices 103 synchronously emit lasers to the inner wall of the galvanized steel pipe, and receive the reflected laser for ranging. The laser emitting and receiving device 103 transmits the received data to the operating platform through the equipment external mechanism 2 to generate a spacing curve. Whether the inner wall of the galvanized steel pipe has defects is judged by the fluctuation of the spacing curve, thereby achieving the effect of reducing interference and improving accuracy.

[0075] By setting a protective groove 1024 on the outer surface of the detector mounting tube 1022 and setting the transmitting and receiving probe 1031 inside the protective groove 1024, during detection, the transmitting and receiving probe 1031 recessed in the protective groove 1024 can avoid friction with the inner wall of the galvanized steel pipe, thereby protecting the transmitting and receiving probe 1031. At the same time, the protective groove 1024 can limit the detection angle of the transmitting and receiving probe 1031 to avoid the intersection of the detection angles of multiple transmitting and receiving probes 1031.

[0076] By setting a pipe wall cleaning air hole 1026 at the end of the metal anti-collision head 1023, setting a dust cleaning air hole 1027 on the side of the protective groove 1024, and setting an air supply pipe 301 connected to the air pump, the air flow is ejected through the pipe wall cleaning air hole 1026 and the dust cleaning air hole 1027. When performing detection, the pipe wall cleaning air hole 1026 can clean the inner wall of the galvanized steel pipe, and the dust cleaning air hole 1027 can clean the outer surface of the transmitting and receiving probe 1031, thereby achieving the effect of further improving the detection accuracy.

[0077] By configuring the connecting extension tube 101 and the detector mounting tube 1022 to be a hose, it can bend along with the curvature of the galvanized steel pipe when inspecting the inside of the galvanized steel pipe, thereby enabling inspection of the inner wall of the curved galvanized steel pipe.

[0078] By setting a supporting frame 302 on the outer surface of the gas pipe 301 to support the connecting extension pipe 101 and the detector installation pipe 1022 respectively, the connecting extension pipe 101 and the detector installation pipe 1022 can be bent while maintaining hardness, so that the transmitting and receiving probe 1031 can easily pass through the inside of the galvanized steel pipe.

[0079] By arranging a probe positioning device 104 on the outer surface of the metal connecting pipe 1021 and the metal anti-collision head 1023, the probe positioning device 104 is in contact with the inner wall of the galvanized steel pipe, so that all the transmitting and receiving probes 1031 are kept at an equidistant distance from the inner wall of the galvanized steel pipe, thereby improving the accuracy of measurement. At the same time, the probe positioning device 104 is retractable, so that it can adapt to galvanized steel pipes of different inner diameters, thereby achieving further accuracy and the effect of adapting to galvanized steel pipes of different diameters.

[0080] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0081] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A galvanized steel pipe inner wall defect quality detection device, characterized in that: include: A detection mechanism (1), the detection mechanism (1) being used to extend into the interior of the galvanized steel pipe for detection; An external device connection mechanism (2), the external device connection mechanism (2) is used to receive data transmitted back by the detection mechanism (1), and the external device connection mechanism (2) is installed at one end of the detection mechanism (1); The detection mechanism (1) comprises a connecting extension tube (101), a probe portion (102) and a laser emitting and receiving device (103); The probe portion (102) is mounted on the end of the connecting extension tube (101), and the laser transmitting and receiving device (103) is mounted on the surface of the probe portion (102); The connecting extension tube (101) is used to push the probe (102) into the depth of the inner wall of the galvanized steel pipe, and the laser emitting and receiving device (103) emits laser to the inner wall of the galvanized steel pipe to detect defects; The line of the laser transmitting and receiving device (103) enters the interior of the device external connection mechanism (2) along the interior of the connecting extension tube (101) to realize data transmission; The device external connection mechanism (2) transmits data to an external operating platform to generate intuitive data.

2. The galvanized steel pipe inner wall defect quality detection device according to claim 1 is characterized in that: The probe portion (102) comprises a metal connecting tube (1021), a detector mounting tube (1022) and a metal anti-collision head (1023); the metal connecting tube (1021) is fixedly connected to the end of the connecting extension tube (101); the detector mounting tube (1022) is connected to the end of the metal connecting tube (1021); and the metal anti-collision head (1023) is connected to the end of the detector mounting tube (1022); The outer surface of the detector installation tube (1022) is provided with protective grooves (1024) at equal intervals, and the laser emitting and receiving device (103) is led out from the inside of the protective grooves (1024).

3. The galvanized steel pipe inner wall defect quality detection device according to claim 2 is characterized in that: The laser transmitting and receiving device (103) comprises a transmitting and receiving probe (1031) and a transmitter (1032); the transmitting and receiving probe (1031) is installed inside all the protective slots (1024); the transmitter (1032) is arranged on the inner wall of the metal connecting tube (1021); a connecting optical fiber (1033) is arranged between the transmitting and receiving probe (1031) and the transmitter (1032); a data line (1034) is arranged on the transmitter (1032); and the data line (1034) extends from the inside of the connecting extension tube (101) to the inside of the device external connection mechanism (2).

4. The galvanized steel pipe inner wall defect quality detection device according to claim 3 is characterized in that: There are a plurality of transmitting and receiving probes (1031), each of the transmitting and receiving probes (1031) is fan-shaped, and the detection surfaces of all the transmitting and receiving probes (1031) are circular; A sheath tube is provided on the outer surface of the connecting optical fibers (1033) connected to all the transmitting and receiving probes (1031) to integrate them into one cable and introduce them into the transmitter (1032).

5. The galvanized steel pipe inner wall defect quality detection device according to claim 2 is characterized in that: The outer surfaces of the metal connecting pipe (1021) and the metal anti-collision head (1023) are both provided with equidistantly distributed probe positioning devices (104), the probe positioning devices (104) are retractable, and the ends of the probe positioning devices (104) are in contact with the inner wall of the galvanized steel pipe.

6. The device for detecting inner wall defects of a galvanized steel pipe according to claim 5, characterized in that: The probe positioning device (104) comprises a plurality of sleeve tubes (1041) sleeved with each other, an elastic member (1042) being provided at the connection of each sleeve tube (1041), and a rotatable roller (1043) being provided at the end of the sleeve tube (1041) contacting the inner wall of the galvanized steel pipe, wherein the rotation direction of the roller (1043) is the same as the axial direction of the galvanized steel pipe.

7. The device for detecting inner wall defects of a galvanized steel pipe according to claim 3, characterized in that: The connecting extension tube (101) and the detector installation tube (1022) are both flexible hoses.

8. The device for detecting inner wall defects of a galvanized steel pipe according to claim 7, characterized in that: The end of the metal anti-collision head (1023) is provided with a pipe wall cleaning air hole (1026), and the interior of the metal anti-collision head (1023) is provided with an air pipe joint (1028); A slope chamfer (1025) is provided on one side of the protection groove (1024) close to the metal anti-collision head (1023), and a dust cleaning air hole (1027) is provided on the other end of the protection groove (1024); The air pipe joint (1028) is plugged with a support mechanism (3), and the support mechanism (3) is respectively connected to the pipe wall cleaning air hole (1026) and the dust cleaning air hole (1027).

9. The device for detecting inner wall defects of a galvanized steel pipe according to claim 8, characterized in that: The support mechanism (3) comprises an air supply pipe (301) and a binding belt (303); the air supply pipe (301) is respectively plugged into an air pipe joint (1028) and communicated with a dust cleaning air hole (1027); A plurality of support frames (302) are equidistantly arranged on the outer surface of the gas transmission pipe (301), and the support frames (302) respectively support the interior of the detector installation pipe (1022) and the connecting extension pipe (101); The connecting optical fiber (1033) is supported by the supporting frame (302), and the data line (1034) is attached to the surface of the gas transmission pipe (301) and is bound by a binding tape (303) for wiring.

10. The device for detecting inner wall defects of a galvanized steel pipe according to claim 9, characterized in that: The device external connection mechanism (2) comprises a switching box (201), and the switching box (201) is provided with a power supply interface (202), an expansion interface (203), an air pump interface (204), a laser rangefinder (205), a display screen (206), and a setting button (207); A mainboard is disposed inside the adapter box (201), and the data cable (1034), the power supply interface (202), the expansion interface (203), the laser rangefinder (205), the display screen (206) and the setting button (207) are all connected to the mainboard; The power supply interface (202) is connected to a data platform or a PC; The air pump interface (204) is in communication with the air delivery pipe (301), and the air pump interface (204) is connected to an external air pump; The laser of the laser rangefinder (205) is directed toward the end of the galvanized steel pipe.

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