Eddy current detection device for ultrahigh pressure tubular reactor

Abstract

An eddy current detection device for an ultrahigh pressure tubular reactor belongs to the technical field of eddy current detection, and is characterized in that a shroud ring for preventing rotation is arranged in a cover body and is used for restraining rotation of a moving strip or a nut; therefore, when the moving strip executes reciprocating operation, the moving strip can only stretch into or retreat from the ultrahigh pressure tubular reactor according to the direction of the center line of the driving lead screw and cannot rotate, the stability of the moving strip during working is improved, a nut for preventing rotation does not need to be constructed at the head, and the working efficiency is improved. The span of the structure of the whole linear driver is smaller, so that the structure is suitable for a narrower internal interval of the ultrahigh-pressure tubular reactor; the defects that in the prior art, when an eddy current probe is arranged at the head of a columnar linear driver to drive the eddy current probe to move in or out of the ultrahigh-pressure tubular reactor, a moving strip is unstable when the linear driver reciprocates according to a center line at the position, and the efficiency of motor traction is weakened are effectively overcome.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the eddy current testing technical field, concretely relates to a kind of superhigh pressure tubular reactor eddy current testing device. BACKGROUND

[0002] Eddy current testing refers to the use of electromagnetic induction principle, by measuring the change of induced eddy current in the workpiece to be detected to assess the performance of electrically conductive materials and its workpiece, or to find defects Nondestructive testing method. In industrial production, eddy current testing is one of the main means to control various metal materials and a small number of graphite, carbon fiber composite materials and other non-metallic conductive materials and their product quality, and plays an important role in the field of nondestructive testing technology.

[0003] To perform eddy current testing on superhigh pressure tubular reactor, mainly as mentioned in the prior art solution with patent publication number "CN221100609U", the eddy current probe is inserted into the superhigh pressure tubular reactor to perform eddy current testing.

[0004] To insert the eddy current probe into the superhigh pressure tubular reactor to perform eddy current testing, a linear actuator is often used to insert the eddy current probe into the superhigh pressure tubular reactor to perform eddy current testing. The current linear actuator generally uses a rectangular housing structure, which is suitable for installing limit. However, the rectangular housing has high manufacturing cost, and occupies a large area under the same span, which is not suitable for use in the limited range of superhigh pressure tubular reactor. Therefore, a cylindrical housing linear actuator is developed. However, when the eddy current probe is provided at the head of the current cylindrical linear actuator to perform movement in or out of the superhigh pressure tubular reactor, the moving bar is generally cylindrical, so it often shakes and even rotates simultaneously, causing the moving bar to be unstable when the linear actuator reciprocates according to the center line, which reduces the efficiency of the motor traction. SUMMARY

[0005] To solve the above problems, the utility model provides a kind of superhigh pressure tubular reactor eddy current testing device, effectively avoid the defect that the linear actuator of cylindrical in prior art is provided with eddy current probe at its head to drive eddy current probe to perform movement in or out of the superhigh pressure tubular reactor, when linear actuator reciprocates according to the center line, moving bar is not stable, which reduces the efficiency of motor traction.

[0006] To overcome the deficiencies in the prior art, the utility model provides a solution to a superhigh pressure tubular reactor eddy current testing device, as follows:

[0007] A kind of superhigh pressure tubular reactor eddy current testing device, comprising:

[0008] The cover is provided with a driving screw and a columnar moving bar, the moving bar is clamped in the driving screw to reciprocate along the center line of the cover, the cover is provided with a clamping ring on the outer surface of the moving bar to prevent rotation of the moving bar around the center line of the driving screw, and the moving bar is provided with an eddy current probe on the end wall of the head for insertion into or out of the ultra-high pressure tubular reactor to perform eddy current detection.

[0009] Further, the linear driver comprises a cover, a traction motor, a driving screw, a moving bar and a clamping ring for guiding, wherein the driving screw is connected to the rotating shaft of the traction motor, and the moving bar is clamped with the driving screw.

[0010] Further, the clamping ring for guiding is arranged on the outer surface of the moving bar to limit the reciprocating movement of the moving bar; and the driving screw is provided with a rotary bearing.

[0011] Further, the cover is columnar.

[0012] Further, the structure that the moving bar is clamped with the driving screw is that a nut is further connected between the moving bar and the driving screw, and the nut is used to clamp the driving screw.

[0013] Further, the structure that the moving bar is clamped with the driving screw is that an internal thread hole is opened on the end wall of the moving bar, and the internal thread hole is clamped with the driving screw.

[0014] Further, the traction motor is a servo motor, and the servo motor is provided with a speed reducer.

[0015] Further, the cover is provided with a clamping ring for preventing rotation of the moving bar, the clamping ring for preventing rotation is arranged in the cover by means of static fit, and the clamping ring for preventing rotation is sealed by an adhesive between the clamping ring for preventing rotation and the cover, the clamping ring for preventing rotation is provided with more than one anti-rotation wall, the outer surface of the moving bar is provided with a limiting rotation wall matched with the anti-rotation wall, the number of the anti-rotation walls is a pair, the pair of anti-rotation walls are arranged on the inner surface of the clamping ring for preventing rotation, and a pair of limiting rotation walls are arranged on the outer surface of the moving bar to be combined with the pair of anti-rotation walls.

[0016] Further, the anti-rotation ring comprises an upper anti-rotation ring and a lower anti-rotation ring matched with each other, and the upper anti-rotation ring and the lower anti-rotation ring are used to wrap the anti-rotation area for accommodating the moving bar. The traction motor, the slewing bearing and the moving bar, and the driving screw can be arranged in the anti-rotation ring, and the anti-rotation ring is arranged in the cover body and cannot rotate in the cover body.

[0017] Further, the driving screw is connected with the traction motor through a flange, the flange is provided with a slewing bearing and a rubber sheet, and the flange is connected with the rotating rod of the traction motor through a tensioning screw.

[0018] The utility model discloses the beneficial effects are:

[0019] The anti-rotation ring arranged in the cover body is used to constrain the moving bar or constrain the rotation of the nut, so that the moving bar can only enter or exit the superhigh pressure tubular reactor along the center line direction of the driving screw during reciprocating operation, and cannot rotate, the stability of the moving bar during operation is improved, the nut is not constructed in the head to prevent rotation, and the span of the structure of the whole linear driver is smaller, which is suitable for the internal interval of a narrower superhigh pressure tubular reactor. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a cross-sectional schematic view of a superhigh pressure tubular reactor eddy current detection device of the utility model;

[0021] Figure 2 is Figure 1 an exploded view;

[0022] Figure 3 is a cross-sectional schematic view of another superhigh pressure tubular reactor eddy current detection device of the utility model;

[0023] Figure 4 is Figure 3 an exploded view;

[0024] Figure 5 is a cross-sectional schematic view of another superhigh pressure tubular reactor eddy current detection device of the utility model;

[0025] Figure 6 is Figure 5 an exploded view. DETAILED DESCRIPTION

[0026] The utility model will be preferred to be explained in combination with the drawings and examples.

[0027] As Figures 1 to 6 shown, the utility model discloses a superhigh pressure tubular reactor eddy current detection device, which comprises:

[0028] The cover body 2 is provided with a driving screw 4 and a columnar moving strip 5, the moving strip 5 is clamped in the driving screw 4 and can reciprocate along the center line direction of the cover body 2, the cover body 2 is provided with a clamping ring 22 arranged on the outer surface of the moving strip 5 and used for preventing rotation, the clamping ring 22 can restrict the rotation of the moving strip 5 around the center line of the driving screw 4, and the moving strip 5 is provided with an eddy current probe on the end wall of the head portion and used for extending into or out of the ultra-high pressure tubular reactor to perform eddy current detection.

[0029] In the preferred but non-limiting embodiment of the utility model, the linear driver comprises a cover body 2, a traction motor 3, a driving screw 4, a moving strip 5 and a clamping ring 6 used for guiding, wherein the driving screw 4 is connected to the rotating rod of the traction motor 3, and the moving strip 5 is screwed with the driving screw 4.

[0030] In the preferred but non-limiting embodiment of the utility model, the clamping ring 6 used for guiding is arranged on the outer surface of the moving strip 5 to limit and guide the reciprocating movement of the moving strip 5, and the driving screw 4 is provided with a rotary support 7.

[0031] In the preferred but non-limiting embodiment of the utility model, the cover body 2 is columnar to reduce the manufacturing cost.

[0032] In the preferred but non-limiting embodiment of the utility model, the structure that the moving strip 5 is screwed with the driving screw 4 is that a nut 8 is further connected between the driving screw 4 and the moving strip 5, the nut 8 is used for screwing with the driving screw 4, the moving strip 5 does not need to be provided with an internal thread hole, and the moving strip 5 vertically moves along the center line direction of the driving screw 4 to perform reciprocating movement, so that the power requirement of the traction motor 3 can be reduced.

[0033] In the preferred but non-limiting embodiment of the utility model, the structure that the moving strip 5 is screwed with the driving screw 4 can also be that an internal thread hole is formed in the end wall of the moving strip 5 and screwed with the driving screw 4.

[0034] In the preferred but non-limiting embodiment of the utility model, the traction motor 3 is a servo motor, the servo motor is provided with a speed reducer to control the rotation speed, so that the accuracy of the reciprocating movement is improved.

[0035] The utility model discloses preferably but not limitedly the implementation mode, the cover 2 is equipped with and the hoop ring 22 of preventing rotation that the mobile strip 5 is combined to restrict the rotation of mobile strip 5, i.e. the hoop ring 22 of preventing rotation can be installed in the cover 2 via the method of static cooperation, to make the hoop ring 22 of preventing rotation not rotate in cover 2, and to strengthen the firmness of the hoop ring 22 of preventing rotation, but also can be sealed between the hoop ring 22 of preventing rotation and cover 2 via adhesive, more than one anti-rotation wall 222 is equipped in the hoop ring 22 of preventing rotation, the outer surface of mobile strip 5 is equipped with and the anti-rotation wall 222 is matched with the limit rotation wall 52, i.e. the number of anti-rotation wall 222 is a pair, and a pair of anti-rotation wall 222 is opposite and arranged on the inner surface of the hoop ring 22 of preventing rotation, and a pair of limit rotation wall 52 is opposite and arranged on the outer surface of mobile strip 5 for being combined with a pair of anti-rotation wall 222, via the combination of anti-rotation wall 222 and limit rotation wall 52, the mobile strip 5 with eddy current probe cannot rotate when entering or exiting the superhigh pressure pipe reactor, the stability of mobile strip 5 when reciprocating is improved, and when the lead screw 4 for driving and the mobile strip 5 are connected with the nut 8, the nut 8 is also equipped with the same limit rotation wall 52, which can remove the use of the existing limit rotation nut, and ensure the operation of the mobile strip 5.

[0036] The utility model discloses preferably but not limitedly the implementation mode, the hoop ring 22 of preventing rotation includes the upper hoop ring 22 and lower hoop ring 22 matched with each other, and the upper hoop ring 22 and lower hoop ring 22 are used to coil and form the anti-rotation area that accommodates the mobile strip 5. Here, the traction motor 3, the slewing bearing 7 and the mobile strip 5, the drive lead screw 4 can be arranged in the hoop ring 22 of preventing rotation, the hoop ring 22 of preventing rotation is arranged in the cover 2, and cannot rotate in the cover 2. The hoop ring 6 for guiding can be connected to the outer surface of the hoop ring 22 of preventing rotation, the outer surface of the hoop ring 22 of preventing rotation located in the outer surface of the containing space collapses inward to arrange the hoop ring 6 for guiding, so that the outer surface of the hoop ring 6 for guiding and the outer surface of the longest place of the hoop ring 22 of preventing rotation are opposite, to save the interval for arrangement, when arranging, each component can be arranged in the upper hoop ring 22 or lower hoop ring 22, then the other hoop ring 22 of preventing rotation is spliced, then all the hoop ring 22 of preventing rotation is arranged into the cover 2 through one end of the cover 2, to facilitate efficient disassembly and arrangement.

[0037] The utility model discloses a preferred but not restrictive mode of embodiment, the driving lead screw 4 is connected via the flange 10 traction motor 3, be equipped with slewing bearing 7 and rubber sheet 9 on the flange 10, the rubber sheet 9 is equipped between the nut 8 and slewing bearing 7 to when the nut 8 runs to lower portion and the rubber sheet 9 is attached to achieve damping, here when being equipped with the nut 8, rubber sheet 9 can be directly attached to the nut 8, when only being equipped with the moving strip 5, then moving strip 5 and rubber sheet 9 are directly attached, by this can when moving strip 5 or the nut 8 runs to the bottommost limit and via the damping function of rubber sheet 9 prevents several times knock flange 10 and makes flange 10 shake, the flange 10 and the rotating rod of traction motor 3 are connected via the tensioning lead screw to reduce the disturbance to motor rotating rod.

[0038] Accordingly, the structure of the linear driver is more compact, has good precision, good adaptability, good limit function, can be installed and used in narrow space, and the hoop 22 for preventing rotation is used to make the linear driver work more stably.

[0039] The utility model has the advantages of:

[0040] The hoop for preventing rotation is arranged in the cover body to constrain the rotation of the moving strip or the nut, so that the moving strip can only enter or exit the ultra-high pressure tubular reactor along the center line direction of the driving lead screw during reciprocating operation, and cannot rotate, improving the stability of the moving strip during operation. The nut is not necessary to be constructed at the head to prevent rotation, and the span of the linear driver is smaller, which is suitable for the internal space of the narrower ultra-high pressure tubular reactor.

[0041] The utility model has been described above in the form of examples, and those skilled in the art should understand that the present disclosure is not limited to the above-described examples, and various changes, modifications and substitutions can be made without departing from the scope of the utility model.

Claims

1. An ultrahigh pressure tubular reactor vortex detection device, characterized by, The application relates to a linear drive device, comprising a housing, a traction motor, a driving screw, a moving bar and a guide ring. The guide ring is arranged on the outer surface of the moving bar to limit the reciprocating movement of the moving bar.

2. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 1, wherein, The housing is cylindrical.

3. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 2, wherein, The moving bar and the driving screw are connected through a nut.

4. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 3, wherein, The moving bar and the driving screw are connected through a nut.

5. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 4, wherein, The traction motor is a servo motor.

6. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 5, wherein, The housing is provided with a rotation-preventing ring combined with the moving bar to prevent the rotation of the moving bar.

7. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 6, wherein The rotation-preventing ring comprises an upper ring and a lower ring matched with each other.

8. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 7, wherein, The driving screw is connected with the traction motor through a flange provided with a rotary bearing and a rubber sheet.

9. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 8, characterized in that The flange is connected with the rotating shaft of the traction motor through a tensioning screw.

10. The ultra-high pressure tubular reactor vortex detection apparatus according to claim 9, wherein, ​

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