CN218082358U - Metal pipeline clamping device for pulse eddy current detection - Google Patents

Abstract

The utility model discloses a metal pipeline clamping device that pulse eddy current testing used, its technical scheme main points are: including the fixed station, the top surface fixed mounting of fixed station has the operation piece, the stabilizer hole has been seted up to one side of operation piece, the top surface fixed mounting of fixed station has the install bin, the connecting hole has been seted up respectively to the both sides of install bin, the staff starts the hydraulic stem, the telescopic link of hydraulic stem removes and drives extension post and connecting plate downstream, and then can make connecting plate and meshing groove drive gear revolve, the rotation of gear opposite direction can make two blocks of rubber be close to each other, then the block of rubber can be laminated with the surface of tubular metal resonator, and then through the exerting pressure of hydraulic stem to extension post, connecting plate and gear, can make the block of rubber press from both sides tightly the tubular metal resonator, have the characteristic of stronger frictional force and hydraulic stem, the block of rubber is tightened up through block of rubber and gear and linkage post, the staff of being convenient for carries out the centre gripping to metal pipeline, thereby can prevent that metal pipeline from following the intention after pressing from both sides tightly rotating.

Description

Metal pipeline clamping device for pulse eddy current detection

Technical Field

The utility model relates to a metal pipeline centre gripping technical field, concretely relates to metal pipeline clamping device that pulse eddy current testing used.

Background

The impulse eddy current testing technique adopts square wave or step mode excitation, contain abundant frequency component, if can be used to the high frequency component of equipment upper surface defect detection and be used for the low frequency component of equipment lower surface defect detection, the limitation that traditional vortex can only detect equipment upper surface defect has been avoided, furthermore, the excitation energy of impulse eddy current is stronger, has fine penetrability, can pierce through protective layer and dozens or even hundreds of millimeters heat insulation layer, can really realize carrying out the detection of not shutting down to the pressure-bearing member under the condition of not demolising the protective layer, therefore, the impulse eddy current has good application prospect in the pipeline and equipment, especially the detection of the pipeline and the equipment of taking the cladding layer.

For example, chinese patent publication No. CN212540241U proposes a clamping device for pulsed eddy current detection, which realizes clamping metal pipes of different sizes by providing a plurality of clamp holders with different diameters on a turntable, but in this scheme, because the device needs to measure the metal pipe when clamping the metal pipe, the metal pipe can be clamped only after the diameter of the metal pipe is identified, and the hole diameters of the clamp holders are fixed and are different in size, when the diameter of the metal pipe is smaller than the hole diameter of the clamp holder, a worker places the metal pipe into the clamp holder for clamping, the metal pipe rotates in the clamp holder, and thus the clamping effect of the metal pipe is poor.

SUMMERY OF THE UTILITY MODEL

The utility model is not enough to prior art, the utility model provides a metal pipeline clamping device that pulse eddy current testing used, the device has been solved when centre gripping metal pipeline, need measure metal pipeline, just can carry out the centre gripping to it after distinguishing metal pipeline's diameter, and the hole diameter of clamp holder is fixed, and metal pipeline's diameter is not of uniform size, when metal pipeline's diameter is less than clamp holder hole diameter, the staff puts into the centre gripping in the clamp holder with metal pipeline, metal pipeline can be at the clamp holder internal rotation, thereby can lead to the relatively poor problem of metal pipeline's centre gripping effect.

The above technical purpose of the present invention can be achieved by the following technical solutions:

metal pipeline clamping device that pulse eddy current inspection used includes: the top surface of the fixed platform is fixedly provided with an operation block, one side of the operation block is provided with a stable hole, the top surface of the fixed platform is fixedly provided with an installation box, and two sides of the installation box are respectively provided with a connecting hole; and the clamping assembly is arranged on the top surface of the inner part of the installation box and used for clamping the metal pipeline to be detected.

In order to facilitate the staff to carry out the centre gripping to metal pipeline, conduct the utility model discloses a metal pipeline clamping device that pulse eddy current testing used, the preferred, the centre gripping subassembly includes: the fixed plate is fixedly installed on the inner top surface of the installation box, two rotary columns are fixedly installed on one side of the fixed plate, gears are movably sleeved on the outer circle wall surfaces of the rotary columns, linkage columns are fixedly installed on the outer circle wall surfaces of the gears, rubber blocks are fixedly installed on two sides, close to each other, of the linkage columns respectively, sliding holes are formed in the top surface of the installation box, connecting plates are connected to the inner portions of the sliding holes in a sliding mode, a plurality of meshing grooves are formed in two sides of each connecting plate respectively, lengthening columns are fixedly installed on the top surface of each connecting plate, the meshing grooves are connected with the gears in a meshing mode, fixed columns are fixedly installed on the top surface of the installation box, circular through holes are formed in the top surface of each fixing column, hydraulic rods are fixedly sleeved on the inner circle wall surfaces of the circular through holes, and the lengthening columns are fixedly installed on telescopic rods of the hydraulic rods.

In order to make things convenient for the staff to press from both sides tightly the tubular metal resonator of less diameter, as the utility model discloses a metal pipeline clamping device that pulse eddy current testing used, the preferred, the mounting groove has been seted up to the inside of operation piece, spacing hole has been seted up respectively to the both sides of operation piece, the interior round wall in spacing hole is seted up threadedly, the both sides of operation piece are provided with the spliced pole respectively, the excircle wall of spliced pole is seted up threadedly, the spliced pole with spacing hole threaded connection, the one end fixed mounting of spliced pole has the grip block.

In order to facilitate the staff liberation both hands to operate the pulse eddy current testing appearance, as the utility model discloses a metal pipeline clamping device that pulse eddy current testing used, the preferred, the draw-in groove has been seted up to the top surface of operation piece, the inside activity joint of draw-in groove has places the case, the top surface of placing the case is provided with the baffle, the bottom surface fixed mounting of baffle has two joint boards, the top surface of placing the case has seted up two joint grooves, the joint board with joint groove activity joint, the preformed hole has been seted up to the top surface of baffle, the inside bottom surface of placing the case has seted up the inspection hole, the both sides of placing the case fixed block fixed mounting respectively, the fixed slot has been seted up respectively to the both sides of fixed block, inside one side fixed mounting of fixed slot has powerful spring, the inside sliding connection of fixed slot has the centre gripping post, the centre gripping post with powerful spring fixed mounting.

In order to reach the effect of fixed stop, as the utility model discloses a metal pipeline clamping device that pulse eddy current testing used, the preferred, the fixed orifices has been seted up respectively to the both sides of placing the case, the fixed orifices with the joint groove is linked together, the screw thread post has been cup jointed in the interior round wall activity of fixed orifices, threaded hole has been seted up to one side of joint board, the screw thread post with screw hole threaded connection.

For the convenience of staff places pulse eddy current testing appearance, conduct the utility model discloses a metal pipeline clamping device that pulse eddy current testing used, the preferred, one side fixed mounting of operation piece has places the board.

In order to facilitate limiting the pulse eddy current detector inside of placing the board, as the utility model discloses a metal pipeline clamping device that pulse eddy current detection used, the preferred, circular through-hole has been seted up respectively to the both sides of placing the board, the restriction post has been cup jointed in the activity of the interior circle wall of circular through-hole, the inside of placing the board is provided with two grip blocks, the grip block with restriction post fixed mounting, coil spring has been cup jointed in the activity of the excircle wall of restriction post, coil spring with place inside one side fixed mounting of board.

To sum up, the utility model discloses mainly have following beneficial effect:

through the rubber piece that sets up, use through operation piece, stabilizer hole, install bin and connecting hole mutually supporting, be convenient for stabilize the metal tube in the inside of stabilizer hole and connecting hole, and then use through hydraulic stem, extension post, connecting plate, meshing groove, gear, linkage post and rubber piece mutually supporting, can make the rubber piece press from both sides tightly the metal tube, the staff of being convenient for carries out the centre gripping to metal pipeline to can prevent that metal pipeline from rotating at will after pressing from both sides tightly.

Through the grip block that sets up, after the inside that the installation box was put into with the less tubular metal resonator of diameter to the staff carries out the centre gripping, the staff drives the grip block through rotating the spliced pole and rotates, makes grip block and tubular metal resonator contact, and then screws up the spliced pole, makes the grip block carry out the centre gripping to the other end of tubular metal resonator, and the staff of being convenient for presss from both sides tightly the tubular metal resonator of less diameter.

Through the case of placing that sets up, the staff is using pulse eddy current testing appearance to detect time measuring to metal pipeline, the staff need hold test probe always, and then paste test probe and metal pipeline surface tightly, the staff shifts out the draw-in groove through placing the case, and then put into the inside of placing the case with test probe, and then two relative centre gripping posts are kept away from each other to the pulling centre gripping post, then will place the case and remove to the surface of tubular metal resonator, the staff pine hand makes powerful spring drive centre gripping post kick-back this moment, and then the centre gripping post can with tubular metal resonator surface contact, thereby can reach the effect that will place the case centre gripping on the tubular metal resonator surface, the staff of being convenient for liberates both hands and operates pulse eddy current testing appearance, prevent that the staff from holding test probe always and leading to the soreness of wrist.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of the installation box of the present invention;

fig. 3 is a schematic structural view of the fixing plate of the present invention;

fig. 4 is a schematic structural diagram of the operation block of the present invention;

FIG. 5 is a schematic view of the structure of the placing box of the present invention;

fig. 6 is a schematic diagram of the structure of the clamping plate of the present invention.

Reference numerals: 1. a fixed table; 2. an operation block; 3. a stabilization well; 4. installing a box; 5. connecting holes; 6. a clamping plate; 7. a fixing plate; 8. rotating the column; 9. a gear; 10. a linkage column; 11. a rubber block; 12. a slide hole; 13. a connecting plate; 14. an engagement groove; 15. fixing a column; 16. a restraining post; 17. a hydraulic rod; 18. lengthening a column; 19. mounting grooves; 20. a limiting hole; 21. connecting columns; 22. a clamping block; 23. a card slot; 24. placing the box; 25. a baffle plate; 26. reserving a hole; 27. a clamping plate; 28. a clamping groove; 29. a detection hole; 30. a fixed block; 31. fixing grooves; 32. a clamping post; 33. a fixing hole; 34. placing the plate; 35. a threaded hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example one

Referring to fig. 1, 2, 3 and 4, the metal pipeline clamping device for pulse eddy current testing comprises a fixed table 1, an operation block 2 is fixedly installed on the top surface of the fixed table 1, a stable hole 3 is formed in one side of the operation block 2, an installation box 4 is fixedly installed on the top surface of the fixed table 1, the installation box 4 is of a hollow rectangular structure, connecting holes 5 are respectively formed in two sides of the installation box 4, a clamping assembly is arranged on the inner top surface of the installation box 4 and used for clamping a metal pipeline to be tested, the clamping assembly comprises a fixed plate 7, the fixed plate 7 is fixedly installed on the inner top surface of the installation box 4, two rotating columns 8 are fixedly installed on one side of the fixed plate 7, each rotating column 8 is of a structure formed by a cylinder and a round block, a gear 9 is movably sleeved on the outer circular wall surface of each rotating column 8, and a linkage column 10 is fixedly installed on the outer circular wall surface of the gear 9, two sides of two linkage columns 10 close to each other are respectively fixedly provided with a rubber block 11, the top surface of an installation box 4 is provided with a sliding hole 12, the inside of the sliding hole 12 is slidably connected with a connecting plate 13, two sides of the connecting plate 13 are respectively provided with a plurality of meshing grooves 14, the top surface of the connecting plate 13 is fixedly provided with an extension column 18, the meshing grooves 14 are meshed with a gear 9, the top surface of the installation box 4 is fixedly provided with a fixed column 15, the fixed column 15 is a U-shaped column, the top surface of the fixed column 15 is provided with a circular through hole, the inner circular wall surface of the circular through hole is fixedly sleeved with a hydraulic rod 17, the extension column 18 is fixedly installed with a telescopic rod of the hydraulic rod 17, when an operator needs to clamp a detected metal pipeline, the operator puts one end of the metal pipe into the stabilizing hole 3, and then pushes the metal pipe to enable the metal pipe to pass through an operation block 2, then one end of the metal pipe penetrates through the connecting hole 5 and moves into the installation box 4, then a worker starts the hydraulic rod 17, the telescopic rod of the hydraulic rod 17 moves to drive the lengthening column 18 and the connecting plate 13 to move upwards, the connecting plate 13 can drive the meshing groove 14 to mesh with the gear 9 in the moving process, the two gears 9 can rotate relatively under the driving of the connecting plate 13 and the meshing groove 14, the two gears 9 can drive the linkage column 10 and the rubber block 11 to move when rotating relatively, and then the two rubber blocks 11 can be separated in opposite directions, so that the internal space of the installation box 4 can be enlarged, then the worker penetrates one end of the metal pipe through the installation box 4, so that the metal pipe can be stabilized in the stabilizing hole 3 and the connecting hole 5, then the worker starts the hydraulic rod 17, the telescopic rod of the hydraulic rod 17 moves to drive the lengthening column 18 and the connecting plate 13 to move downwards, and then can make connecting plate 13 and meshing groove 14 drive gear 9 and rotate, gear 9 can make two rubber blocks 11 be close to each other when the direction rotates in opposite directions, then rubber block 11 can be laminated with the surface of tubular metal resonator, and then through hydraulic stem 17 to extension post 18, the application of pressure of connecting plate 13 and gear 9, thereby can make rubber block 11 press from both sides tightly to the tubular metal resonator, characteristic and hydraulic stem 17 that have stronger frictional force through rubber block 11, gear 9 and interlock post 10 tighten up rubber block 11, the staff of being convenient for carries out the centre gripping to metal pipeline, thereby can prevent that metal pipeline from rotating at will after pressing from both sides tightly, and simultaneously, through the uncovered of stable hole 3 and connecting hole 5, the staff of being convenient for places the inside of different length's metal pipeline entering stable hole 3 and connecting hole 5 fast and carries out the centre gripping.

Example two

Referring to fig. 1, 4 and 5, an installation groove 19 is formed in an operation block 2, two sides of the operation block 2 are respectively provided with a limiting hole 20, an inner circular wall surface of the limiting hole 20 is provided with a thread, two sides of the operation block 2 are respectively provided with a connection column 21, an outer circular wall surface of the connection column 21 is provided with a thread, the connection column 21 is in threaded connection with the limiting hole 20, one end of the connection column 21 is fixedly provided with a clamping block 22, after a metal pipe with a smaller diameter is placed in the installation box 4 to be clamped by an operator through the arranged clamping block 22, the operator rotates the connection column 21 to drive the clamping block 22 to rotate, the clamping block 22 is in contact with the metal pipe, the connection column 21 is screwed, the clamping block 22 clamps the other end of the metal pipe, the operator can conveniently clamp the metal pipe with the smaller diameter, a clamping groove 23 is formed in the top surface of the operation block 2, a placing box 24 is movably clamped in the clamping groove 23, the top surface of the placing box 24 is provided with a baffle plate 25, the bottom surface of the baffle plate 25 is fixedly provided with two clamping plates 27, the top surface of the placing box 24 is provided with two clamping grooves 28, the clamping plates 27 are movably clamped with the clamping grooves 28, the top surface of the baffle plate 25 is provided with a preformed hole 26, the inner bottom surface of the placing box 24 is provided with a detection hole 29, two sides of the placing box 24 are respectively and fixedly provided with a fixed block 30, two sides of the fixed block 30 are respectively provided with a fixed groove 31, one side inside the fixed groove 31 is fixedly provided with a strong spring, the inside of the fixed groove 31 is slidably connected with a clamping column 32, the clamping column 32 is an L-shaped column, the clamping column 32 is fixedly installed with the strong spring, through the arranged placing box 24, when a worker uses the pulse eddy current detector to detect the metal pipeline, the worker needs to hold the detection probe by hands all the time and then tightly attaches the detection probe to the surface of the metal pipeline, the staff shifts out draw-in groove 23 through placing case 24, and then put into the inside of placing case 24 with test probe, and then stimulate centre gripping post 32 and keep away from two relative centre gripping posts 32 each other, then will place case 24 and remove to the surface of tubular metal resonator, the staff is loose hand and is made powerful spring drive centre gripping post 32 resilience this moment, and then centre gripping post 32 can with tubular metal resonator surface contact, thereby can reach the effect of placing case 24 centre gripping on the tubular metal resonator surface, it operates pulse vortex detector to be convenient for the staff liberation both hands, prevent that the staff from holding test probe always and lead to the sore wrist.

EXAMPLE III

Referring to fig. 1, fig. 4, fig. 5 and fig. 6, fixing holes 33 are respectively opened on both sides of the placing box 24, the fixing holes 33 are communicated with the clamping grooves 28, threaded columns are movably sleeved on inner circular wall surfaces of the fixing holes 33, threaded holes 35 are opened on one sides of the clamping plates 27, the threaded columns are in threaded connection with the threaded holes 35, through the set threaded columns, a worker places the threaded columns inside the threaded holes 35, so that the effect of the fixing baffle 25 can be achieved, a placing plate 34 is fixedly installed on one side of the operating block 2, the placing plate 34 is a U-shaped plate, through the set placing plate 34, the worker places the pulse eddy current detector, circular through holes are respectively opened on both sides of the placing plate 34, the inner circular wall surfaces of the circular through holes are movably sleeved with the limiting columns 16, two clamping plates 6 are arranged inside the placing plate 34, the clamping plates 6 and the limiting columns 16 are fixedly installed, a coil spring is movably sleeved on the outer circular wall surfaces of the limiting columns 16, the coil spring and the inner side of the placing plate 34 are fixedly installed, through the set clamping plates 6, the worker places the pulse eddy current detector inside of the pulse eddy current detector after placing plate 34, the pulse eddy current detector can be conveniently used by matching with the limiting columns 16, and the clamping plates 34, and the vortex detector can be conveniently placed in a manner.

The working principle is as follows: referring to fig. 1-6, when a worker needs to clamp a metal pipeline to be tested by using the rubber blocks 11, the worker puts one end of the metal pipe into the stabilizing hole 3, pushes the metal pipe to pass through the operation block 2, then moves one end of the metal pipe into the installation box 4 through the connection hole 5, and then the worker starts the hydraulic rod 17, the telescopic rod of the hydraulic rod 17 moves to drive the extension column 18 and the connecting plate 13 to move upwards, so that the connecting plate 13 moves to drive the meshing groove 14 to mesh with the gear 9, the two gears 9 are driven by the connecting plate 13 and the meshing groove 14 to rotate relatively, the two gears 9 drive the linkage column 10 and the rubber blocks 11 to move when rotating relatively, and further the two rubber blocks 11 are separated in opposite directions, so as to enlarge the internal space of the installation box 4, then the worker passes one end of the metal pipe through the installation box 4, so that the metal pipe can be stabilized inside the stabilizing hole 3 and the connecting hole 5, the worker starts the hydraulic rod 17, the telescopic rod of the hydraulic rod 17 moves to drive the lengthening column 18 and the connecting plate 13 to move downwards, so that the connecting plate 13 and the meshing groove 14 can drive the gear 9 to rotate, the two rubber blocks 11 can be close to each other when the gear 9 rotates in opposite directions, then the rubber blocks 11 can be attached to the surface of the metal pipe, and further the lengthening column 18, the connecting plate 13 and the gear 9 are pressed by the hydraulic rod 17, so that the rubber blocks 11 can clamp the metal pipe, the rubber blocks 11 are tightened by the characteristic that the rubber blocks 11 have strong friction force and the hydraulic rod 17, the gear 9 and the interlocking column 10, the worker can clamp the metal pipe conveniently, and the metal pipe can be prevented from rotating intentionally after being clamped, simultaneously, through the uncovered of stabilizer hole 3 and connecting hole 5, the staff of being convenient for places the metal pipeline of different length fast and gets into the inside of stabilizer hole 3 and connecting hole 5 and carry out the centre gripping.

Through the grip block 22 that sets up, after the inside that the staff put into install bin 4 with the less tubular metal resonator of diameter carries out the centre gripping, the staff drives grip block 22 through rotating spliced pole 21 and rotates, makes grip block 22 and tubular metal resonator contact, and then screws up spliced pole 21, makes grip block 22 carry out the centre gripping to the other end of tubular metal resonator, and the staff of being convenient for presss from both sides tightly the tubular metal resonator of less diameter.

Through the case 24 of placing that sets up, when the staff uses pulse eddy current test appearance to detect metal pipeline, the staff need hold the test probe always, and then paste test probe and metal pipeline surface tightly, the staff shifts out draw-in groove 23 through placing case 24, and then put into the inside of placing case 24 with test probe, and then stimulate two relative centre gripping posts 32 and keep away from each other, then will place the surface that case 24 removed to the tubular metal resonator, the staff pine hand makes powerful spring drive centre gripping post 32 kick-back this moment, and then centre gripping post 32 can with tubular metal resonator surface contact, thereby can reach the effect of placing case 24 centre gripping on the tubular metal resonator surface, be convenient for the staff liberation both hands and operate pulse eddy current test appearance, prevent that the staff from holding test probe always and leading to the sore wrist.

Through the grip block 6 that sets up, the staff places the inside back of placing board 34 with the pulse vortex detector, uses through the cooperation of restriction post 16, coil spring and grip block 6 to can carry out the centre gripping to the pulse vortex detector, be convenient for restrict the inside of placing board 34 with the pulse vortex detector.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. Metal pipeline clamping device that pulse eddy current testing used, its characterized in that includes:

the top surface of the fixed table (1) is fixedly provided with an operation block (2), one side of the operation block (2) is provided with a stable hole (3), the top surface of the fixed table (1) is fixedly provided with an installation box (4), and two sides of the installation box (4) are respectively provided with a connecting hole (5);

the clamping assembly is arranged on the top surface of the inner portion of the installation box (4) and used for clamping the metal pipeline to be detected.

2. The pulsed eddy current inspection metal tube clamping device according to claim 1, wherein the clamping assembly comprises:

the fixed plate (7) is fixedly installed on the inner top face of the installation box (4), two rotary columns (8) are fixedly installed on one side of the fixed plate (7), a gear (9) is movably sleeved on the outer circle wall face of each rotary column (8), linkage columns (10) are fixedly installed on the outer circle wall face of each gear (9), rubber blocks (11) are fixedly installed on two sides, close to each other, of the linkage columns (10), sliding holes (12) are formed in the top face of the installation box (4), connecting plates (13) are connected with the sliding holes (12) in a sliding mode, a plurality of meshing grooves (14) are formed in two sides of each connecting plate (13), lengthening columns (18) are fixedly installed on the top face of each connecting plate (13), the meshing grooves (14) are meshed with the gears (9), fixing columns (15) are fixedly installed on the top face of the installation box (4), circular through holes are formed in the top face of the fixing columns (15), hydraulic rods (17) are fixedly sleeved on the inner circle wall faces of the circular through holes, and telescopic rods (18) are fixedly installed with the hydraulic rods (17).

3. The metal pipe clamping device for pulsed eddy current inspection as set forth in claim 1, wherein: mounting groove (19) have been seted up to the inside of operation piece (2), spacing hole (20) have been seted up respectively to the both sides of operation piece (2), the interior circle wall of spacing hole (20) is seted up threadedly, the both sides of operation piece (2) are provided with spliced pole (21) respectively, the excircle wall of spliced pole (21) is seted up threadedly, spliced pole (21) with spacing hole (20) threaded connection, the one end fixed mounting of spliced pole (21) has grip block (22).

4. The metal pipe clamping device for pulsed eddy current inspection as set forth in claim 1, wherein: draw-in groove (23) have been seted up to the top surface of operation piece (2), the inside activity joint of draw-in groove (23) has placed case (24), the top surface of placing case (24) is provided with baffle (25), the bottom surface fixed mounting of baffle (25) has two joint board (27), two joint groove (28) have been seted up to the top surface of placing case (24), joint board (27) with joint groove (28) activity joint, preformed hole (26) have been seted up to the top surface of baffle (25), inspection hole (29) have been seted up to the inside bottom surface of placing case (24), the both sides of placing case (24) are fixed mounting respectively has fixed block (30), fixed slot (31) have been seted up respectively to the both sides of fixed block (30), inside one side fixed mounting of fixed slot (31) has powerful spring, the inside sliding connection of fixed slot (31) has centre gripping post (32), centre gripping post (32) with powerful spring fixed mounting.

5. The metal pipe clamping device according to claim 4, wherein: fixing holes (33) are respectively formed in two sides of the placing box (24), the fixing holes (33) are communicated with the clamping grooves (28), threaded columns are movably sleeved on the inner circle wall surfaces of the fixing holes (33), threaded holes (35) are formed in one sides of the clamping plates (27), and the threaded columns are in threaded connection with the threaded holes (35).

6. The metal pipe clamping device for pulsed eddy current inspection as set forth in claim 1, wherein: a placing plate (34) is fixedly arranged on one side of the operation block (2).

7. The metal pipe clamping device according to claim 6, wherein: circular through holes are formed in two sides of the placing plate (34) respectively, limiting columns (16) are movably sleeved on inner circular wall surfaces of the circular through holes, two clamping plates (6) are arranged inside the placing plate (34), the clamping plates (6) and the limiting columns (16) are fixedly installed, spiral springs are movably sleeved on outer circular wall surfaces of the limiting columns (16), and the spiral springs and one side of the inside of the placing plate (34) are fixedly installed.

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