A kind of heat-insulated oil jacket pipe girth weld nondestructive testing equipment

Abstract

The application discloses a kind of heat-insulated oil casing circumferential weld nondestructive testing equipment, belong to weld detection technical field, including first clamp and second clamp, the first clamp and second clamp symmetrically set.The application, if it is found pore, control box will send control instruction to hydraulic cylinder, hydraulic cylinder makes stretching movement after receiving instruction, and then will push the marking dart in marking cylinder to move to the direction of heat-insulated oil casing, finally marking dart is pressed on the surface of heat-insulated oil casing, leaves mark, marking dart in the process of moving to the direction of heat-insulated oil casing, cutting knife will act on the surface of marking dart, so that the plastic film wrapped on the surface of marking dart can be removed, after plastic film is removed, the flag connected on the surface of marking dart is unwound, so as to facilitate staff to quickly find and locate the occurrence site of defective circumferential weld, with fast and accurate characteristics, and marking dart only leaves mark on the surface of heat-insulated oil casing, without damage.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of weld detection, and particularly relates to a heat-insulating oil casing ring weld nondestructive detection equipment. BACKGROUND

[0002] The heat-insulating oil casing comprehensively applies three heat-insulation technologies of vacuum extraction, heat reflection and heat convection blocking to create super heat-insulation performance of the heat-insulating oil pipe. The heat-insulating oil casing reduces steam injection heat loss, improves injectable depth and steam dryness of an injection oil layer, reduces thermal stress of a casing and a cement sheath, and prevents high-temperature damage of the casing. The heat-insulating oil casing is mainly applied to heavy oil thermal recovery (steam stimulation), SAGD expansion to brine exploitation, ground transportation, geothermal exploitation and the like.

[0003] Some invention patents in the technical field of weld detection are disclosed in the prior art. The invention patent with the application number CN97115718.9 discloses a heat-insulating oil pipe ring joint ultrasonic flaw detection method. The flaw detection method adopts a special test block and a special single-bevel probe to detect a transverse wave of a heat-insulating oil pipe ring joint. A CTS-22 or CTS-26 type ultrasonic flaw detector is used to perform pulse reflection A scanning. According to a reflection wave position and amplitude, a ring joint defect is checked. The heat-insulating oil pipe ring joint ultrasonic flaw detection method provided by the technical solution is convenient to operate, has high detection rate and accuracy, can guarantee weld detection quality, greatly reduces detection cost, overcomes defects of an existing ray sampling inspection method, and obtains good economic benefits. However, the technical solution still has some deficiencies in implementation. The ultrasonic detection method has high damage to the heat-insulating oil casing ring weld, and even causes damage to a detection personnel to a certain extent. Such a detection method has low efficiency and low detection accuracy.

[0004] Based on this, the application designs a heat-insulating oil casing ring weld nondestructive detection equipment to solve the above problems. SUMMARY

[0005] The application aims at solving the problems that the prior art still has some deficiencies, the ultrasonic detection method has high damage to the heat-insulating oil casing ring weld, and even causes damage to a detection personnel to a certain extent, and such a detection method has low efficiency and low detection accuracy. A heat-insulating oil casing ring weld nondestructive detection equipment is provided.

[0006] In order to achieve the above object, the application adopts the following technical solution.

[0007] The utility model provides a kind of heat insulation oil jacket ring weld nondestructive testing equipment, including first clamp and second clamp, the first clamp and second clamp are symmetrically arranged, the second clamp is hinged with the side of the opposite side of first clamp by spring hinge, and the outer arc surface of the first clamp and second clamp is clamped with first detection component, and two first detection components are symmetrically arranged;

[0008] The first detection component includes a fixed sleeve that is clamped to the outer arc surface of the first clamp or the second clamp. A first buffer assembly is sleeved in the fixed sleeve. One end of the first buffer assembly is fixedly connected with a threaded rod. The surface of the threaded rod is threadedly connected with a threaded cylinder. The surface of the threaded cylinder is sleeved with a bearing. The bearing is clamped in the port of the fixed sleeve. The other end of the first buffer assembly is fixedly connected with a clamping seat. The inner side of the clamping seat is rotatably connected with a roller. The axle of the roller is fixedly connected with a knocking rod.

[0009] As a further description of the above technical solution:

[0010] The first buffer assembly includes a movable sleeve that is sleeved in the fixed sleeve. One end of the movable sleeve is fixedly connected with the end of the threaded rod. The inner part of the other end of the movable sleeve is sleeved with a buffer shaft. The end of the buffer shaft is fixedly connected with the side of the clamping seat.

[0011] A sliding groove is formed in the inner side wall of the movable sleeve. A sliding seat is slidingly connected in the sliding groove. The opposite side of the buffer shaft is fixedly connected with the sliding seat. The end surface of the sliding seat is fixedly connected with a buffer spring. The other end of the buffer spring is fixedly connected with the end surface of the inner side of the sliding groove.

[0012] As a further description of the above technical solution:

[0013] A control box is fixedly installed on the inner arc surface of the first clamp and the second clamp corresponding to the positions of the two knocking rods. The side of the control box away from the first clamp or the second clamp is fixedly installed with a sound recorder.

[0014] As a further description of the above technical solution:

[0015] A marking assembly is fixedly connected on the inner arc surface of the first clamp and the second clamp corresponding to the positions of the two knocking rods. The marking assembly includes a marking cylinder. The end of the marking cylinder is fixedly connected with the inner arc surface of the first clamp or the second clamp. The end surface of the inner side of the marking cylinder is fixedly connected with a hydraulic cylinder. A feeding box is butt-jointed on the bottom of the marking cylinder corresponding to the position of the hydraulic cylinder. A slidingly connected upper push plate is arranged in the inner part of the feeding box. The bottom of the upper push plate is fixedly connected with the bottom of the inner side of the feeding box through a supporting spring. The inner part of the feeding box and the marking cylinder are filled with a marking gun. A cutting knife is fixedly connected on the top of the inner side of the marking cylinder corresponding to the position of the marking gun.

[0016] As a further description of the above technical solutions:

[0017] The outer arc surfaces of the first and second clamps are clamped with second detection assemblies, and the two second detection assemblies are symmetrically arranged, the second detection assemblies are internally loaded with second buffer assemblies, and the combination mode of the second buffer assembly and the second detection assembly is the same as that of the first buffer assembly and the first detection assembly.

[0018] As a further description of the above technical solutions:

[0019] The first detection assembly and the second detection assembly are the same in structure, the first buffer assembly and the second buffer assembly are the same in structure, an electric motor is fixedly installed on the wheel shaft of the built-in roller of the second detection assembly, and the surface of the body of the electric motor is fixedly installed on the side end surface of the built-in clamp seat of the second detection assembly.

[0020] As a further description of the above technical solutions:

[0021] The top of the first clamp and the top of the second clamp are fixedly connected with the same set of jet flow assemblies, the jet flow assemblies include two annular shunt bodies, the two annular shunt bodies are fixedly connected to the top of the first clamp and the top of the second clamp respectively, the inner arc surfaces of the two annular shunt bodies are both provided with jet flow holes, the second clamp and the first clamp are connected through a bridge type connecting pipe, and the surface of the bridge type connecting pipe is connected with a jet flow pipe.

[0022] As a further description of the above technical solutions:

[0023] The outer arc surface of the first clamp is provided with a power line, one end of the power line is electrically connected with the electric motor, the hydraulic cylinder and the control box respectively, and the other end of the power line is electrically connected with a plug.

[0024] A non-destructive testing method for the circumferential weld of a heat-insulating oil casing, the non-destructive testing method for the circumferential weld of a heat-insulating oil casing comprises:

[0025] S1: when it is necessary to detect the circumferential weld of a heat-insulating oil casing, the first clamp and the second clamp are respectively opened to both sides by pulling, in the process, the built-in spring of the spring hinge will be deformed, the first clamp and the second clamp after being opened are sleeved on the periphery of the heat-insulating oil casing, then the acting force acting on the first clamp and the second clamp is slowly removed, and the first clamp and the second clamp are buckled under the action of the reset spring force of the built-in spring of the spring hinge;

[0026] S2: According to the thickness of the heat insulation oil jacket, the roller is adjusted to ensure the clamping force between the roller and the heat insulation oil jacket, the threaded cylinder is twisted to rotate in the bearing, under the combined effect of the torsion and the thread engagement force, the threaded rod is displaced in the threaded cylinder, the threaded rod pushes the movable sleeve on the inner side of the fixed sleeve to move towards the heat insulation oil jacket, after the roller contacts the heat insulation oil jacket, the threaded cylinder is continuously twisted to rotate to increase the pressure between the roller and the heat insulation oil jacket, so that there is enough friction force during the movement of the roller on the surface of the heat insulation oil jacket, the electric motor is controlled to operate, the output shaft of the electric motor drives the built-in roller of the second detection assembly to rotate during operation, the two built-in rollers of the second detection assembly rotate on the surface of the heat insulation oil jacket, which drives the entire heat insulation oil jacket girth weld non-destructive testing equipment to climb on the surface of the heat insulation oil jacket, the roller shaft of the built-in roller of the first detection assembly rotates during rotation, the knocking rod rotates during rotation and knocks the surface of the heat insulation oil jacket, the sound recorder can record the sound generated when the heat insulation oil jacket is knocked, the control box receives the sound signal recorded by the sound recorder and judges the sound signal to determine whether the heat insulation oil jacket girth weld has pores;

[0027] S3: If pores are found, the control box will send a control instruction to the hydraulic cylinder, the hydraulic cylinder will extend after receiving the instruction, and then push the marking gun in the marking cylinder to move towards the heat insulation oil jacket, and finally the marking gun is pressed on the surface of the heat insulation oil jacket to leave a mark, the cutting knife acts on the surface of the marking gun during the movement of the marking gun towards the heat insulation oil jacket, so that the plastic film wrapped on the surface of the marking gun can be removed, and the flag connected to the surface of the marking gun is unfolded after the plastic film is removed;

[0028] S4: After the heat insulation oil jacket girth weld non-destructive testing equipment completes the detection work of the heat insulation oil jacket, the electric motor is controlled to reverse, and the entire heat insulation oil jacket girth weld non-destructive testing equipment slowly returns, during the return, the air pump is controlled to introduce air flow into the jet pipe, the air flow in the jet pipe flows into the two annular branch bodies through the bridge type connecting pipe, and finally is sprayed on the surface of the heat insulation oil jacket through the jet holes;

[0029] S5: During the rolling process of the roller on the surface of the heat insulation oil jacket, when the pressure between the roller and the heat insulation oil jacket increases or decreases, the roller will pull or push the buffer spring to deform by using the clamping seat through the sliding seat on the buffer seat, the roller will make corresponding extension and retraction movement on the inner side of the movable sleeve by using the elastic force generated by the deformation of the buffer spring, so that the stability of the roller during the rolling process on the surface of the heat insulation oil jacket can be well maintained.

[0030] As described above, by adopting the above technical scheme, the present application has the following advantages:

[0031] 1. In this invention, during the rotation of the built-in roller in the first detection component, the axle of the roller drives the striking rod to rotate. During the rotation of the striking rod, it strikes the surface of the heat insulation oil casing. The recorder can record the sound produced when the heat insulation oil casing is struck. The control box receives the sound signal recorded by the recorder and judges the sound signal to determine whether there is porosity in the circumferential weld of the heat insulation oil casing. If porosity is found, the control box will send a control command to the hydraulic cylinder. After receiving the command, the hydraulic cylinder will extend, which will push the javelin in the marking cylinder towards the heat insulation oil casing. Finally, the javelin presses on the surface of the heat insulation oil casing, leaving a mark. During the movement of the javelin towards the heat insulation oil casing, the cutting blade will act on the surface of the javelin, thereby removing the plastic film wrapped on the surface of the javelin. After the plastic film is removed, the flag wrapped around the surface of the javelin unfolds, which helps the staff to quickly find and locate the location of the defective circumferential weld. It has the characteristics of speed and accuracy, and the javelin only leaves a mark on the surface of the heat insulation oil casing without causing damage.

[0032] 2. In this invention, the entire non-destructive testing equipment for the circumferential weld of the thermal insulation oil casing slowly makes a return motion. During the return process, the air pump is controlled to introduce airflow into the jet pipe. The airflow in the jet pipe flows into two annular distributors through the bridge connecting pipe and is finally sprayed onto the surface of the thermal insulation oil casing through the jet hole. This effectively improves the work efficiency of the staff and reduces the cost of testing the circumferential weld of the thermal insulation oil casing to a certain extent.

[0033] 3. In this invention, the roller will perform corresponding telescopic movements on the inner side of the movable sleeve through the buffer shaft. By utilizing the elastic force generated when the buffer spring deforms, the stability of the roller during the rolling process on the surface of the heat insulation oil casing can be well maintained, and it is beneficial for the roller to adapt to the inspection work of heat insulation oil casings of different thicknesses. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of a non-destructive testing device for the circumferential weld of a thermal insulation oil casing proposed in this invention.

[0035] Figure 2 This invention proposes a non-destructive testing device for the circumferential weld of a thermal insulation oil casing. Figure 1 Enlarged structural diagram at point C;

[0036] Figure 3 This invention proposes a non-destructive testing device for the circumferential weld of a thermal insulation oil casing. Figure 1 Enlarged structural diagram at point B;

[0037] Figure 4 This is a cross-sectional structural schematic diagram of the marking component in a non-destructive testing device for circumferential welds of a thermal insulation oil casing proposed in this invention;

[0038] Figure 5 A structure schematic view of a marking assembly in a heat-insulated oil casing girth weld nondestructive testing equipment according to the present application is provided;

[0039] Figure 6 A structure schematic view of a first detection assembly in a heat-insulated oil casing girth weld nondestructive testing equipment according to the present application is provided;

[0040] Figure 7 A sectional structure schematic view of a first buffer assembly in a heat-insulated oil casing girth weld nondestructive testing equipment according to the present application is provided;

[0041] Figure 8 A heat-insulated oil casing girth weld nondestructive testing equipment according to the present application is provided; Figure 7 An enlarged structure schematic view of A in the heat-insulated oil casing girth weld nondestructive testing equipment according to the present application is provided;

[0042] Figure 9 A structure schematic view of a jet flow assembly in a heat-insulated oil casing girth weld nondestructive testing equipment according to the present application is provided.

[0043] Legend:

[0044] 1, first clamp; 2, second clamp; 3, first detection assembly; 301, fixed sleeve; 302, clamping seat; 303, roller; 304, threaded rod; 305, threaded cylinder; 306, bearing; 4, first buffer assembly; 401, movable sleeve; 402, buffer shaft; 403, sliding seat; 404, sliding groove; 405, buffer spring; 5, marking assembly; 501, marking cylinder; 502, hydraulic cylinder; 503, feeding box; 504, pushing plate; 505, supporting spring; 506, marking arrow; 507, cutting knife; 6, second detection assembly; 7, electric motor; 8, jet flow assembly; 801, annular flow divider; 802, jet flow hole; 803, bridge type connecting pipe; 804, jet flow pipe; 9, power cord; 10, plug; 11, control box; 12, sound recorder; 13, second buffer assembly; 14, knocking rod. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0046] Please refer to Figures 1-9The application provides a technical scheme: a kind of heat-insulated oil casing ring weld nondestructive testing equipment, including first clamp 1 and second clamp 2, first clamp 1 and second clamp 2 are symmetrically arranged, and the side of the opposite side of second clamp 2 and first clamp 1 is hinged by spring hinge, and the outer arc surface of first clamp 1 and second clamp 2 is all clamped with first detection component 3, and two first detection components 3 are symmetrically arranged;

[0047] First detection component 3 includes fixed sleeve 301, and fixed sleeve 301 is clamped in the outer arc surface of first clamp 1 or second clamp 2, first buffer component 4 is sleeved in fixed sleeve 301, one end of first buffer component 4 is fixedly connected with threaded rod 304, the surface of threaded rod 304 is threadedly connected with threaded cylinder 305, the surface of threaded cylinder 305 is sleeved with bearing 306, bearing 306 is clamped in the port of fixed sleeve 301, the other end of first buffer component 4 is fixedly connected with clamping seat 302, the inner side of clamping seat 302 is rotatably connected with roller 303, and knocking rod 14 is fixedly connected on the axle of roller 303.

[0048] Specifically, first buffer component 4 includes movable sleeve 401, movable sleeve 401 is sleeved in fixed sleeve 301, one end of movable sleeve 401 is fixedly connected with the end close to threaded rod 304, and the inside of the other end of movable sleeve 401 is sleeved with buffer shaft 402, and the end close to clamping seat 302 is fixedly connected with the side of buffer shaft 402.

[0049] The inner side wall of movable sleeve 401 is provided with sliding groove 404, sliding groove 404 is slidably connected with sliding seat 403, the opposite side of sliding seat 403 is fixedly connected with buffer shaft 402, the end surface of sliding seat 403 is fixedly connected with buffer spring 405, and the other end of buffer spring 405 is fixedly connected to the end surface of the inner side of sliding groove 404.

[0050] Implementation mode is specific: in the process that roller 303 rolls on the surface of heat-insulated oil casing, when the pressure between roller 303 and heat-insulated oil casing increases or decreases, roller 303 will pull or push buffer spring 405 to make it deform by buffer seat through sliding seat 403 on buffer seat 403, and roller 303 will make corresponding telescopic movement on the inner side of movable sleeve 401 through buffer shaft 402, and the elastic force generated when buffer spring 405 deforms is utilized, so that the stability of roller 303 in the rolling process on the surface of heat-insulated oil casing can be well maintained, and the detection work of roller 303 adapting to heat-insulated oil casings of different thicknesses is facilitated.

[0051] Specifically, the inner arc surface of the first clamp 1 and the second clamp 2 corresponding to the position of the two knock bars 14 are fixedly installed with control boxes 11, the back of the control box 11 away from the first clamp 1 or the second clamp 2 is fixedly installed with a sound recorder 12, the inner arc surface of the first clamp 1 and the second clamp 2 corresponding to the position of the two knock bars 14 are fixedly connected with a marking assembly 5, the marking assembly 5 includes a marking barrel 501, the end of the marking barrel 501 is fixedly connected to the inner arc surface of the first clamp 1 or the second clamp 2, the inner side of the marking barrel 501 is fixedly connected with a hydraulic cylinder 502, the bottom of the marking barrel 501 is butt jointed with a feeding box 503 corresponding to the position of the hydraulic cylinder 502, the inside of the feeding box 503 is slidingly connected with an upper push plate 504, the bottom of the upper push plate 504 is fixedly connected with the inside bottom of the feeding box 503 through a supporting spring 505, the inside of the feeding box 503 and the marking barrel 501 are filled with a marking gun 506, and the inside top of the marking barrel 501 is fixedly connected with a cutting knife 507 corresponding to the position of the marking gun 506, the outer arc surface of the first clamp 1 and the second clamp 2 is clamped with a second detection assembly 6, and the two second detection assemblies 6 are symmetrically arranged, the second detection assembly 6 is loaded with a second buffer assembly 13, the combination mode of the second buffer assembly 13 and the second detection assembly 6 is the same as that of the first buffer assembly 4 and the first detection assembly 3, the structure of the first detection assembly 3 and the second detection assembly 6 is the same, the structure of the first buffer assembly 4 and the second buffer assembly 13 is the same, the axle of the built-in roller 303 of the second detection assembly 6 is fixedly installed with an electric motor 7, and the surface of the body of the electric motor 7 is fixedly installed on the side end face of the built-in clamp seat 302 of the second detection assembly 6.

[0052] The embodiment is characterized in that the roller 303 is adjusted according to the thickness of the heat-insulated oil jacket pipe to ensure the clamping force between the roller 303 and the heat-insulated oil jacket pipe, the threaded cylinder 305 is twisted to rotate in the bearing 306, and the threaded rod 304 is displaced in the threaded cylinder 305 under the combined action of the torsion and the thread engagement force, so that the movable sleeve 401 is pushed to move in the inside of the fixed sleeve 301 and towards the heat-insulated oil jacket pipe. After the roller 303 comes into contact with the heat-insulated oil jacket pipe, the threaded cylinder 305 is continuously twisted to rotate to increase the pressure between the roller 303 and the heat-insulated oil jacket pipe, so that there is enough friction force during the movement of the roller 303 on the surface of the heat-insulated oil jacket pipe. The electric motor 7 is controlled to operate, and the output shaft of the electric motor 7 drives the roller 303 in the second detection assembly 6 to rotate during the operation. During the rotation of the two rollers 303 in the second detection assembly 6 on the surface of the heat-insulated oil jacket pipe, the entire heat-insulated oil jacket pipe girth weld nondestructive testing equipment is driven to climb on the surface of the heat-insulated oil jacket pipe. During the rotation of the roller 303 in the first detection assembly 3, the axle of the roller 303 drives the knocking rod 14 to rotate, and the knocking rod 14 knocks the surface of the heat-insulated oil jacket pipe during the rotation. The sound recorder 12 can record the sound generated when the heat-insulated oil jacket pipe is knocked. The control box 11 receives the sound signal recorded by the sound recorder 12 and judges the sound signal to determine whether there is a blowhole in the heat-insulated oil jacket pipe girth weld. If a blowhole is found, the control box 11 sends a control instruction to the hydraulic cylinder 502, and the hydraulic cylinder 502 extends after receiving the instruction to drive the marking gun 506 in the marking cylinder 501 to move towards the heat-insulated oil jacket pipe. Finally, the marking gun 506 is pressed on the surface of the heat-insulated oil jacket pipe to leave a mark.

[0053] Specifically, the same set of jet flow assemblies 8 are fixedly connected to the top of the first clamp 1 and the second clamp 2, the jet flow assembly 8 includes two annular flow distributors 801, the two annular flow distributors 801 are fixedly connected to the top of the first clamp 1 and the second clamp 2 respectively, the inner arc surfaces of the two annular flow distributors 801 are provided with jet flow holes 802, the second clamp 2 and the first clamp 1 are connected through a bridge type connecting pipe 803, and the surface of the bridge type connecting pipe 803 is connected with a jet flow pipe 804.

[0054] The embodiment is characterized in that after the heat-insulated oil jacket pipe girth weld nondestructive testing equipment completes the detection of the heat-insulated oil jacket pipe, the electric motor 7 is reversed to control the slow return movement of the entire heat-insulated oil jacket pipe girth weld nondestructive testing equipment. During the return movement, the air pump is controlled to introduce air flow into the jet flow pipe 804, the air flow in the jet flow pipe 804 flows into the two annular flow distributors 801 through the bridge type connecting pipe 803, and finally is sprayed on the surface of the heat-insulated oil jacket pipe through the jet flow holes 802.

[0055] Specifically, the outer arc surface of the first clamp 1 is provided with a power line 9, one end of the power line 9 is electrically connected with the electric motor 7, the hydraulic cylinder 502 and the control box 11 respectively, and the other end of the power line 9 is electrically connected with a plug 10.

[0056] A heat-insulated oil sleeve girth weld nondestructive testing method, the heat-insulated oil sleeve girth weld nondestructive testing method comprises:

[0057] S1: when it is necessary to detect the heat-insulated oil sleeve girth weld, the first clamp 1 and the second clamp 2 are respectively opened to both sides, in this process, the built-in spring of the spring hinge will be deformed, the first clamp 1 and the second clamp 2 after being opened are sleeved on the periphery of the heat-insulated oil sleeve, then the acting force acting on the first clamp 1 and the second clamp 2 is slowly removed, and the first clamp 1 and the second clamp 2 are buckled under the action of the reset spring force of the built-in spring of the spring hinge;

[0058] S2: the roller 303 is adjusted according to the thickness of the heat-insulated oil sleeve, so as to ensure the clamping force between the roller 303 and the heat-insulated oil sleeve, the threaded cylinder 305 is twisted to rotate in the bearing 306, under the combined action of the torsion and the thread engagement force, the threaded rod 304 is displaced in the threaded cylinder 305, the movable sleeve 401 is pushed to move to the heat-insulated oil sleeve direction on the inner side of the fixed sleeve 301, after the roller 303 contacts the heat-insulated oil sleeve, the threaded cylinder 305 is continuously twisted to rotate to increase the pressure between the roller 303 and the heat-insulated oil sleeve, so that there is enough friction force in the moving process of the roller 303 on the surface of the heat-insulated oil sleeve, the electric motor 7 is controlled to operate, the output shaft of the electric motor 7 will drive the built-in roller 303 of the second detection assembly 6 to rotate in the working process, the built-in rollers 303 of the two second detection assemblies 6 rotate on the surface of the heat-insulated oil sleeve, which drives the whole heat-insulated oil sleeve girth weld nondestructive testing equipment to climb on the surface of the heat-insulated oil sleeve, in the rotating process of the first detection assembly 3, the axle of the roller 303 drives the knocking rod 14 to rotate, the knocking rod 14 knocks the surface of the heat-insulated oil sleeve in the rotating process, the sounder 12 can record the sound generated when the heat-insulated oil sleeve is knocked, the control box 11 receives the sound signal recorded by the sounder 12, and judges the sound signal, to judge whether there is a blowhole in the heat-insulated oil sleeve girth weld;

[0059] S3: If the pinhole is found, the control box 11 will send a control command to the hydraulic cylinder 502, and the hydraulic cylinder 502 will extend after receiving the command, and then push the dart 506 in the marking barrel 501 to move towards the heat insulation oil sleeve, and finally the dart 506 is pressed on the surface of the heat insulation oil sleeve to leave a mark. During the movement of the dart 506 towards the heat insulation oil sleeve, the cutting knife 507 acts on the surface of the dart 506, so that the plastic film wrapped on the surface of the dart 506 can be removed, and after the plastic film is removed, the flag wrapped on the surface of the dart 506 is unfolded;

[0060] S4: After the heat insulation oil sleeve girth weld nondestructive testing equipment completes the detection work of the heat insulation oil sleeve, the control motor 7 is reversed, and the whole heat insulation oil sleeve girth weld nondestructive testing equipment slowly moves back. During the return process, the air pump introduces air flow into the jet pipe 804, and the air flow in the jet pipe 804 flows into the two annular shunt bodies 801 through the bridge type connecting pipe 803, and finally is sprayed on the surface of the heat insulation oil sleeve through the jet hole 802;

[0061] S5: During the rolling process of the roller 303 on the surface of the heat insulation oil sleeve, when the pressure between the roller 303 and the heat insulation oil sleeve increases or decreases, the roller 303 will pull or push the buffer spring 405 to deform through the buffer seat 403 on the sliding seat 403 of the buffer seat 402, and the roller 303 will make corresponding extension and retraction movement on the inside of the movable sleeve 401 through the buffer shaft 402, and utilize the elastic force generated by the deformation of the buffer spring 405, so that the stability of the roller 303 during the rolling process on the surface of the heat insulation oil sleeve can be well maintained.

[0062] Working principle, in use:

[0063] When the heat insulation oil sleeve girth weld needs to be detected, the first clamp 1 and the second clamp 2 are pulled to open to the two sides, and in this process, the spring hinge built-in spring will be deformed, and the first clamp 1 and the second clamp 2 after opening are sleeved on the periphery of the heat insulation oil sleeve, and then the acting force acting on the first clamp 1 and the second clamp 2 is slowly removed, and the first clamp 1 and the second clamp 2 are buckled under the action of the reset elastic force of the spring hinge built-in spring;

[0064] The roller 303 is adjusted according to the thickness of the heat-insulated oil sleeve to ensure the clamping force between the roller 303 and the heat-insulated oil sleeve. The threaded cylinder 305 is twisted to rotate in the bearing 306. Under the combined effect of the torsion and the thread engagement force, the threaded rod 304 is displaced in the threaded cylinder 305. The threaded rod 304 pushes the movable sleeve 401 to move in the heat-insulated oil sleeve direction on the inner side of the fixed sleeve 301. After the roller 303 contacts the heat-insulated oil sleeve, the threaded cylinder 305 is continuously twisted to rotate to increase the pressure between the roller 303 and the heat-insulated oil sleeve, so that there is enough friction force during the movement of the roller 303 on the surface of the heat-insulated oil sleeve. The electric motor 7 is controlled to operate. During the operation of the electric motor 7, the output shaft drives the roller 303 in the second detection assembly 6 to rotate. During the rotation of the two rollers 303 in the second detection assembly 6 on the surface of the heat-insulated oil sleeve, the entire heat-insulated oil sleeve girth weld nondestructive testing equipment climbs on the surface of the heat-insulated oil sleeve. During the rotation of the roller 303 in the first detection assembly 3, the axle of the roller 303 drives the knocking rod 14 to rotate. During the rotation of the knocking rod 14, the knocking rod 14 knocks the surface of the heat-insulated oil sleeve. The sound recorder 12 can record the sound generated when the heat-insulated oil sleeve is knocked. The control box 11 receives the sound signal recorded by the sound recorder 12 and judges the sound signal to determine whether there is a blowhole in the girth weld of the heat-insulated oil sleeve. If a blowhole is found, the control box 11 sends a control instruction to the hydraulic cylinder 502. After receiving the instruction, the hydraulic cylinder 502 extends to push the marking gun 506 in the marking cylinder 501 to move in the direction of the heat-insulated oil sleeve. Finally, the marking gun 506 is pressed on the surface of the heat-insulated oil sleeve to leave a mark. During the movement of the marking gun 506 in the direction of the heat-insulated oil sleeve, the cutting knife 507 acts on the surface of the marking gun 506 to remove the plastic film wrapped on the surface of the marking gun 506. After the plastic film is removed, the flag connected to the surface of the marking gun 506 is unfolded, which is conducive to the staff to quickly find and locate the occurrence site of the defective girth weld, has the characteristics of quickness and accuracy, and the marking gun 506 only penetrates the skin layer of the heat-insulated oil sleeve without damage;

[0065] After the heat-insulated oil sleeve girth weld nondestructive testing equipment completes the detection work of the heat-insulated oil sleeve, the electric motor 7 is controlled to reverse. The entire heat-insulated oil sleeve girth weld nondestructive testing equipment slowly returns. During the return, the air pump introduces air flow into the jet pipe 804. The air flow in the jet pipe 804 flows into the two annular branch bodies 801 through the bridge type connecting pipe 803, and finally is sprayed on the surface of the heat-insulated oil sleeve through the jet holes 802, which effectively improves the work efficiency of the staff and reduces the detection cost of the girth weld of the heat-insulated oil sleeve to a certain extent;

[0066] When the pressure between the rolling wheel 303 and the heat-insulating oil jacket increases or decreases during the rolling of the rolling wheel 303 on the surface of the heat-insulating oil jacket, the rolling wheel 303 will pull or push the buffer spring 405 to deform by the clamping base 302 through the sliding seat 403 on the buffer seat, and the rolling wheel 303 will make corresponding extension and contraction movements on the inside of the movable sleeve 401 through the buffer shaft 402, and utilize the elastic force generated by the deformation of the buffer spring 405, so that the stability of the rolling wheel 303 during the rolling on the surface of the heat-insulating oil jacket can be well maintained, and the rolling wheel 303 is beneficial to adapt to the detection work of the heat-insulating oil jackets with different thicknesses.

[0067] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for non-destructive testing of a thermal insulated oil casing girth weld, comprising a first clamp (1) and a second clamp (2), characterized in that, The first clamp (1) and the second clamp (2) are symmetrically arranged, the second clamp (2) is hinged on the side opposite to the first clamp (1) through a spring hinge, and the outer arc surfaces of the first clamp (1) and the second clamp (2) are clamped with first detection assemblies (3), and the two first detection assemblies (3) are symmetrically arranged; The first detection assembly (3) comprises a fixed sleeve (301) clamped on the outer arc surface of the first clamp (1) or the second clamp (2), a first buffer assembly (4) sleeved in the fixed sleeve (301), a threaded rod (304) fixedly connected to one end of the first buffer assembly (4), a threaded cylinder (305) threadedly connected to the surface of the threaded rod (304), a bearing (306) sleeved on the surface of the threaded cylinder (305), the bearing (306) clamped in the port of the fixed sleeve (301), a clamping seat (302) fixedly connected to the other end of the first buffer assembly (4), and a roller (303) rotatably connected to the inner side of the clamping seat (302), wherein the roller (303) is fixedly connected with a knocking rod (14) on the axle thereof. The first buffer assembly (4) comprises a movable sleeve (401) sleeved in the fixed sleeve (301), one end of the movable sleeve (401) is fixedly connected to the end close to the threaded rod (304), and a buffer shaft (402) is sleeved in the other end of the movable sleeve (401). A sliding groove (404) is formed in the inner side wall of the movable sleeve (401), a sliding seat (403) is slidably connected in the sliding groove (404), the sliding seat (403) is fixedly connected to the opposite surface of the buffer shaft (402), a buffer spring (405) is fixedly connected to the end surface of the sliding seat (403), and the other end of the buffer spring (405) is fixedly connected to the end surface of the inner side of the sliding groove (404). Control boxes (11) are fixedly installed on the inner arc surfaces of the first clamp (1) and the second clamp (2) corresponding to the positions of the two knocking rods (14), and sound recorders (12) are fixedly installed on the surfaces of the control boxes (11) away from the first clamp (1) or the second clamp (2). The first clamp (1) and the second clamp (2) are symmetrically arranged, the second clamp (2) is hinged on the side opposite to the first clamp (1) through a spring hinge, and the outer arc surfaces of the first clamp (1) and the second clamp (2) are clamped with first detection assemblies (3), and the two first detection assemblies (3) are symmetrically arranged; The first detection assembly (3) comprises a fixed sleeve (301) clamped on the outer arc surface of the first clamp (1) or the second clamp (2), a first buffer assembly (4) sleeved in the fixed sleeve (301), a threaded rod (304) fixedly connected to one end of the first buffer assembly (4), a threaded cylinder (305) threadedly connected to the surface of the threaded rod (304), a bearing (306) sleeved on the surface of the threaded cylinder (305), the bearing (306) clamped in the port of the fixed sleeve (301), a clamping seat (302) fixedly connected to the other end of the first buffer assembly (4), and a roller (303) rotatably connected to the inner side of the clamping seat (302), wherein the roller (303) is fixedly connected with a knocking rod (14) on the axle thereof. The first buffer assembly (4) comprises a movable sleeve (401) sleeved in the fixed sleeve (301), one end of the movable sleeve (401) is fixedly connected to the end close to the threaded rod (304), and a buffer shaft (402) is sleeved in the other end of the movable sleeve (401). A sliding groove (404) is formed in the inner side wall of the movable sleeve (401), a sliding seat (403) is slidably connected in the sliding groove (404), the sliding seat (403) is fixedly connected to the opposite surface of the buffer shaft (402), a buffer spring (405) is fixedly connected to the end surface of the sliding seat (403), and the other end of the buffer spring (405) is fixedly connected to the end surface of the inner side of the sliding groove (404). The first clamp (1) and the second clamp (2) are symmetrically arranged, the second clamp (2) is hinged on the side opposite to the first clamp (1) through a spring hinge, and the outer arc surfaces of the first clamp (1) and the second clamp (2) are clamped with first detection assemblies (3), and the two first detection assemblies (3) are symmetrically arranged; The first detection assembly (3) comprises a fixed sleeve (301) clamped on the outer arc surface of the first clamp (1) or the second clamp (2), a first buffer assembly (4) sleeved in the fixed sleeve (301), a threaded rod (304) fixedly connected to one end of the first buffer assembly (4), a threaded cylinder (305) threadedly connected to the surface of the threaded rod (304), a bearing (306) sleeved on the surface of the threaded cylinder (305), the bearing (306) clamped in the port of the fixed sleeve (301), a clamping seat (302) fixedly connected to the other end of the first buffer assembly (4), and a roller (303) rotatably connected to the inner side of the clamping seat (302), wherein the roller (303) is fixedly connected with a knocking rod (14) on the axle thereof. The first buffer assembly (4) comprises a movable sleeve (401) sleeved in the fixed sleeve (301), one end of the movable sleeve (401) is fixedly connected to the end close to the threaded rod (304), and a buffer shaft (402) is sleeved in the other end of the movable sleeve (401). A sliding groove (404) is formed in the inner side wall of the movable sleeve (401), a sliding seat (403) is slidably connected in the sliding groove (404), the sliding seat (403) is fixedly connected to the opposite surface of the buffer shaft (402), a buffer spring (405) is fixedly connected to the end surface of the sliding seat (403), and the other end of the buffer spring (405) is fixedly connected to the end surface of the inner side of the sliding groove (404).

2. The insulated casing girth weld non-destructive inspection apparatus of claim 1, wherein, The marking assembly (5) comprises a marking barrel (501), the end of the marking barrel (501) is fixedly connected to the inner arc surface of the first clamp (1) or the second clamp (2), the end surface of the inner side of the marking barrel (501) is fixedly connected with a hydraulic cylinder (502), the bottom of the marking barrel (501) is butted with a feeding box (503) corresponding to the position of the hydraulic cylinder (502), the inside of the feeding box (503) is slidably connected with an upper push plate (504), the bottom of the upper push plate (504) is fixedly connected with the inside bottom of the feeding box (503) through a supporting spring (505), the inside of the feeding box (503) and the marking barrel (501) is filled with a marking gun (506), and the top of the inside of the marking barrel (501) is fixedly connected with a cutting knife (507) corresponding to the position of the marking gun (506).

3. The insulated casing girth weld non-destructive inspection apparatus of claim 2, wherein, The outer arc surfaces of the first clamp (1) and the second clamp (2) are clamped with the second detection assembly (6), and the two second detection assemblies (6) are symmetrically arranged, the second detection assembly (6) is loaded with the second buffer assembly (13), and the combination mode of the second buffer assembly (13) and the second detection assembly (6) is the same as that of the first buffer assembly (4) and the first detection assembly (3).

4. The insulated casing girth weld non-destructive inspection apparatus of claim 3, wherein, The first detection assembly (3) and the second detection assembly (6) have the same structure, the first buffer assembly (4) and the second buffer assembly (13) have the same structure, the electric motor (7) is fixedly installed on the wheel shaft of the built-in roller (303) of the second detection assembly (6), and the surface of the body of the electric motor (7) is fixedly installed on the side end surface of the built-in clamping seat (302) of the second detection assembly (6).

5. The insulated casing girth weld non-destructive inspection apparatus of claim 4, wherein, The top of the first clamp (1) and the second clamp (2) is fixedly connected with the same set of jet flow assemblies (8), the jet flow assembly (8) comprises two annular sub-flow bodies (801), the top of the first clamp (1) and the second clamp (2) is fixedly connected with the two annular sub-flow bodies (801), respectively, the inner arc surfaces of the two annular sub-flow bodies (801) are provided with jet flow holes (802), the second clamp (2) and the first clamp (1) are connected through a bridge type connecting pipe (803), and the surface of the bridge type connecting pipe (803) is connected with a jet flow pipe (804).

6. The insulated casing girth weld non-destructive inspection apparatus of claim 5, wherein, The outer arc surface of the first clamp (1) is provided with a power line (9), one end of the power line (9) is electrically connected with the electric motor (7), the hydraulic cylinder (502) and the control box (11), respectively, and the other end of the power line (9) is electrically connected with a plug (10).

7. A method of inspecting a girth weld of a thermally insulated oil casing according to claim 6, characterized in that, The heat insulation oil jacket pipe girth weld nondestructive detection method comprises: S1: when the heat insulation oil jacket pipe girth weld needs to be detected, the first clamp (1) and the second clamp (2) are respectively opened to both sides by pulling, in the process, the built-in spring of the spring hinge will be deformed, the first clamp (1) and the second clamp (2) after being opened are sleeved on the periphery of the heat insulation oil jacket pipe, then the acting force acting on the first clamp (1) and the second clamp (2) is slowly removed, and the first clamp (1) and the second clamp (2) are buckled under the action of the reset spring force of the built-in spring of the spring hinge; S2: According to the thickness of the heat insulation oil sleeve, adjust the roller (303) to ensure the clamping force between the roller (303) and the heat insulation oil sleeve, twist the threaded cylinder (305) to rotate in the bearing (306), under the combined action of the torsion and the thread engagement force, the threaded rod (304) will displace in the threaded cylinder (305), the threaded rod (304) will push the movable sleeve (401) to move in the inside of the fixed sleeve (301) to the direction of the heat insulation oil sleeve, after the roller (303) contacts the heat insulation oil sleeve, continue to twist the threaded cylinder (305) to rotate to increase the pressure between the roller (303) and the heat insulation oil sleeve, so that there is enough friction force during the movement of the roller (303) on the surface of the heat insulation oil sleeve, control the electric motor (7) to operate, the output shaft of the electric motor (7) will drive the built-in roller (303) of the second detection assembly (6) to rotate during operation, the built-in roller (303) of the two second detection assemblies (6) will drive the entire heat insulation oil sleeve girth weld nondestructive testing equipment to climb on the surface of the heat insulation oil sleeve during rotation, the roller axle of the built-in roller (303) of the first detection assembly (3) will drive the knocking rod (14) to rotate during rotation, the knocking rod (14) will knock the surface of the heat insulation oil sleeve during rotation, the sound recorder (12) can record the sound generated when the heat insulation oil sleeve is knocked, the control box (11) receives the sound signal recorded by the sound recorder (12) and judges the sound signal to determine whether there is a blowhole in the heat insulation oil sleeve girth weld; S3: If a blowhole is found, the control box (11) will issue a control instruction to the hydraulic cylinder (502), the hydraulic cylinder (502) will make an extension movement after receiving the instruction, and then push the marking gun (506) in the marking cylinder (501) to move to the direction of the heat insulation oil sleeve, and finally the marking gun (506) is pressed on the surface of the heat insulation oil sleeve to leave a mark, during the movement of the marking gun (506) to the direction of the heat insulation oil sleeve, the cutting knife (507) will act on the surface of the marking gun (506), so as to remove the plastic film wrapped on the surface of the marking gun (506), after the plastic film is removed, the flag connected to the surface of the marking gun (506) is unfolded, which facilitates the quick positioning of the staff; S4: After the heat insulation oil sleeve girth weld nondestructive testing equipment completes the detection work of the heat insulation oil sleeve, control the electric motor (7) to reverse, the entire heat insulation oil sleeve girth weld nondestructive testing equipment slowly makes a return movement, during the return movement, control the air pump to introduce airflow into the jet pipe (804), the airflow in the jet pipe (804) flows into the two annular shunts (801) through the bridge type connecting pipe (803), and finally is sprayed on the surface of the heat insulation oil sleeve through the jet holes (802), to remove the metal impurities and dust on the surface of the heat insulation oil sleeve; S5: when the pressure between the rolling wheel (303) and the heat-insulated oil jacket increases or decreases during the rolling process of the rolling wheel (303) on the surface of the heat-insulated oil jacket, the rolling wheel (303) will pull or push the buffer spring (405) to deform through the sliding seat (403) on the buffer seat by the clamping seat (302), and the rolling wheel (303) will make corresponding expansion and contraction movements on the inner side of the movable sleeve (401) through the buffer shaft (402), and the elastic force generated when the buffer spring (405) deforms is utilized, so that the stability of the rolling wheel (303) during the rolling process on the surface of the heat-insulated oil jacket can be well maintained.

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