Boiler superheater oxidation degree detection device

Abstract

The present application belongs to the technical field of pipe detection device, and particularly relates to a boiler superheater oxidation degree detection device, which comprises a linear driving assembly and a detection part arranged on the linear driving assembly. The linear driving assembly comprises a matched driving mechanism and a walking mechanism, and a first support and a second support respectively corresponding to the two axial ends of the driving mechanism. The walking mechanism can move along the axial extension direction of the driving mechanism, and the detection part is fixed on the walking mechanism. The bodies of the first support and the second support are both annular bodies, and a first capsule and a second capsule are respectively arranged on the outer circumferential surfaces of the two annular bodies. The outer diameters of the first capsule and the second capsule can respectively become larger and smaller along with the expansion and contraction of the respective capsules. The present application can inhibit the shaking intensity of the detection part during movement, and help to ensure the accuracy and reliability of the detection results without significantly affecting the work efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipe detection devices, and particularly relates to a boiler superheater oxidation degree detection device. BACKGROUND

[0002] The operation environment of a boiler superheater is a high-temperature water vapor environment, so after long-term use, an oxide scale / oxide layer is easily generated on the surface of the pipe wall of the boiler superheater, and the oxide layer is affected by hydrogen pressure fluctuations to fall off, causing the oxidation degree of the pipe wall of the superheated pipe to continuously intensify, that is, the thickness of the non-oxidized layer of the pipe wall gradually thins. After the oxide layer of the superheated pipe continuously falls off and reaches a certain degree, an overheating situation occurs at a local position of the superheater, which easily causes pipe explosion. In order to effectively prevent the occurrence of pipe explosion, the industry usually regularly checks the oxidation degree of the superheated pipe, judges the oxidation degree condition of the superheated pipe according to the falling-off degree of the monitored oxide layer, and ensures that the superheated pipe that is excessively oxidized can be replaced in time. The previous oxidation condition monitoring device of the boiler superheater is usually provided with a probe on a telescopic rod structure or a walking device to carry the probe into the superheated pipe by means of the telescopic rod or the walking device to detect the surface oxidation condition of the superheated pipe along the length direction, such as the technical solution disclosed in the patent document with the application number 2023210776278 and the name of a boiler superheater oxide scale detection device. However, whether the detection part / detection probe is carried into the superheated pipe by means of the telescopic rod or the walking device, the detection part is easily shaken (irregularly fluctuated) at least because of the irregular concave-convex surface condition of the inner wall of the superheated pipe. Such strong / overly irregular fluctuation and shaking state easily causes the detection end of the detection part to not be able to maintain a relatively stable working state, and affects the accuracy and reliability of the detection result. In order to ensure the accuracy and reliability of the detection, a certain static time is usually given in the process of moving the detection part, and the detection is implemented after the detection part reaches a relatively stable state, so that the efficiency of the detection work is significantly reduced, the time of the oxidation degree detection work is prolonged, the production efficiency is not conducive, and the production operation cost is easily increased. SUMMARY

[0003] In view of the above problems, the application provides a boiler superheater oxidation degree detection device which can inhibit the intensity of shaking of the detection part in the moving process, and help to ensure the accuracy and reliability of the detection result without causing significant adverse effects on the working efficiency.

[0004] The technical scheme adopted by the present application to solve its technical problems is: a boiler superheater oxidation degree detection device, comprising a linear driving assembly and a detection part arranged on the linear driving assembly, and the detection part is matched with an external control unit. The number of detection parts can be one or more, and the specific number is determined according to the form of the selected detection part. For example, if the selected detection part is based on visual recognition to complete detection, the number of detection parts arranged is preferably multiple and the arrangement form is selected to be distributed around the circumference, so that the entire circumferential direction of the inner side wall of the superheated pipe can be fully detected.

[0005] The linear driving assembly comprises a matched driving mechanism and a walking mechanism, and a first support and a second support respectively corresponding to the two axial ends of the driving mechanism.

[0006] After the walking mechanism is matched on the driving mechanism, the walking mechanism can move back and forth relative to the driving mechanism along the axial extension direction / length extension direction of the driving mechanism. The detection part is fixed on the walking mechanism and can move synchronously with the walking mechanism relative to the driving mechanism, so that the detection part can correspond to different positions of the superheated pipe in the axial direction to detect the oxidation condition at different positions.

[0007] The first support and the second support are respectively fixed at the two axial ends of the driving mechanism. The bodies of the first support and the second support are both annular bodies, and a first capsule and a second capsule are respectively fixed and arranged on the outer circumferential surfaces of the two annular bodies. The capsule walls of the first capsule and the second capsule are made of elastic material which also has good toughness and strength and other physical properties, so that they can be elastically deformed and not easily pierced.

[0008] The outer diameters of the first capsule and the second capsule can respectively increase and decrease with the expansion and contraction of the respective capsules, so as to switch the outer walls of the first capsule and the second capsule to contact and separate from the inner side wall of the superheated pipe, and to stably support the boiler superheater oxidation degree detection device in the lumen of the superheated pipe and send it into and out of the lumen of the superheated pipe.

[0009] Optionally, the driving mechanism comprises a matched motor unit and a lead screw unit; and the walking mechanism comprises a sliding block unit.

[0010] The screw lever of the screw unit is respectively matched with the first support and the second support, and a pivot cooperation relationship is formed, so that the screw lever can rotate relative to the two supports. The motor in the motor unit is fixed on the body of the first support and connected as a whole with the first support. The slider unit is matched with the screw lever and arranged between the body of the first support and the body of the second support, and can move relative to the first support and the second support along the axial extension direction of the screw lever.

[0011] Optionally, the walking mechanism further comprises a ring member, and the detection parts are fixed on the ring member in the circumferential direction.

[0012] The ring member and the slider unit are connected through a plurality of damping units, so that the damping units can dissipate the vibration energy transmitted to the ring member and in the radial direction.

[0013] Optionally, the slider unit comprises a slider body and an assembly ring. The screw lever of the screw unit is matched with the slider body, and the assembly ring is connected with the ring member through a plurality of damping units.

[0014] Optionally, the damping unit comprises a block matched with the slider unit at one end, and a pair of damping cylinders fixed on the block and extending to the side of the ring member at the other end, so that the axial extension directions of the pair of damping cylinders are consistent with the radial direction of the ring member, and the cylinder rods of the pair of damping cylinders extend in opposite directions.

[0015] The axial direction of the pivot member arranged between the block and the slider unit is parallel to the axial direction of the ring member, and the axial extension directions of the respective pivot structures are also parallel to each other. A spherical surface part is formed at the free end of the pivot member, and a spherical surface groove matched with the spherical surface part in spherical surface contact is formed on the slider unit.

[0016] A plurality of pairs of connecting arm plates matched one-to-one with the damping units are fixed on the ring member, and the two connecting arm plates in each pair are arranged opposite to each other in the radial direction of the ring member. The free ends of the cylinder rods of the pair of damping cylinders are respectively fixed on the two connecting arm plates in each pair.

[0017] Optionally, the number of damping units is four or more and is distributed in the circumferential direction.

[0018] Optionally, the slider unit comprises a slider body and an assembly ring. The screw lever of the screw unit is matched with the slider body.

[0019] A plurality of shaft cavities matched one-to-one with the blocks and distributed in the circumferential direction are formed on the assembly ring. The shaft cavities are multi-stage through-hole structures, and the spherical surface groove is formed at one end of the shaft cavities away from the blocks. The inner diameters of the respective stages of the shaft cavities are all greater than the outer diameter of the pivot member. After the pivot member passes through the shaft cavities, the pivot member is fixed and matched with the blocks in the form of threaded connection, so that the spherical surface part and the spherical surface groove establish a spherical surface contact matching relationship.

[0020] Optionally, an elastic sleeve is sleeved on the pivot and is arranged at the end of the shaft cavity close to the mold block. The outer circumferential surface of the elastic sleeve is in contact with the inner wall of the shaft cavity.

[0021] Optionally, an axial flange is formed on the outer end side ring surface of the second support, and a plurality of protrusions are formed on the axial flange and are distributed in the circumferential direction. The roller assembly and the locking part are arranged on the protrusions.

[0022] The roller assembly includes a sliding arm and a roller pivotally arranged at one end of the sliding arm. The sliding arm and the protrusion are matched through a radially extending sliding rail structure, so that the roller assembly can move in the radial direction relative to the second support. The locking part can switch the sliding arm between the state of keeping fixed relative to the protrusion and the state of being able to slide.

[0023] Optionally, a bottom plate is formed at the port away from the first support of the second support, and a multi-stage counterbore is formed at the center position of the bottom plate. The end of the shaft rod in the driving mechanism is pivotally matched with the multi-stage counterbore, so that the shaft rod can rotate relative to the second support.

[0024] The boiler superheater oxidation degree detection device provided by the present application can effectively inhibit the shaking strength of the detection part when the detection part moves relative to the superheated pipe, can always keep the detection end / detection head of the detection part stable during the moving process, and therefore helps to ensure that the detection result is accurate and reliable, and does not need to be equipped with a static time length, and does not significantly adversely affect the working efficiency of the superheater oxidation degree detection operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0026] Figure 2 It is a schematic diagram of the matching structure of the sliding block unit, the ring member and the damping unit.

[0027] Figure 3 It is Figure 2 It is a schematic diagram of the local enlarged structure at A in the middle.

[0028] Figure 4 It is a schematic diagram of the local cross-sectional structure when the assembly ring is pivotally matched with the mold block.

[0029] Figure 5 It is a schematic diagram of the side view structure of the sliding block unit.

[0030] Figure 6 It is a schematic diagram of the side view structure of the ring member.

[0031] Figure 7 It is a schematic diagram of the state change process of the second support (Figure 1 second support) in the left view direction.

[0032] In the figure: 10 superheater tube, 11 inner side wall surface; 20 first support, 21 first capsule; 30 second support, 31 second capsule, 32 axial flange, 33 protruding block, 34 sliding arm, 341 strip-shaped slot, 35 roller, 36 locking part, 37 multi-stage counterbore; 40 motor unit; 50 screw unit, 51 guide rod; 60 sliding block unit, 61 sliding block body, 62 assembly ring, 621 shaft cavity; 70 ring-shaped part, 71 ring-shaped flange, 711 planar part, 72 connecting arm plate; 80 detection part; 90 damping unit, 91 block, 911 cylindrical cavity, 912 rim plate, 913 spherical part, 914 elastic sleeve, 92 damping cylinder one, 93 damping cylinder two. DETAILED DESCRIPTION

[0033] The structure, proportion, size, etc. shown in the drawings of the specification are merely used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and do not have technical substantial significance, and any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technology disclosed by the present application. Meanwhile, the terms such as "upper", "lower", "front", "rear", "middle" etc. cited in the specification are merely for the convenience of clear understanding of the description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantial change of the technical content, should also be considered as the implementable scope of the present application.

[0034] As shown in the boiler superheater oxidation degree detection device, a linear drive assembly and a plurality of detection parts 80 arranged on the linear drive assembly are matched with an external control unit. Since the detection parts 80 and the control unit matched with the detection parts 80 can refer to the prior art, the specific structure and the associated matching form are not described. Figure 1 The linear drive assembly includes a matched drive mechanism and a walking mechanism, and a first support 20 and a second support 30 respectively matched with the axial two end sides of the drive mechanism. The drive mechanism has a long axial extension. After the drive mechanism is matched with the walking mechanism, the walking mechanism can move along the axial extension direction of the drive mechanism. As shown in

[0035] Figure 1 ​As shown, the driving mechanism is a ball screw mechanism, including a motor unit 40 and a screw unit 50; the walking mechanism includes a slider unit 60 and a ring member 70; the slider unit 60 matches the screw unit 50, so that when the motor unit 40 drives the screw unit 50 to rotate, the slider unit 60 and the ring member 70 can move synchronously relative to the screw unit 50. Specifically, the screw lever of the screw unit 50 is matched with the first support 20 and the second support 30 at both ends and forms a pivot matching relationship, so that the screw lever can rotate relative to the two supports. The motor in the motor unit 40 is fixed on the body of the first support 20. The slider unit 60 is matched with the screw lever and is located between the body of the first support 20 and the body of the second support 30, and can move along the axial extension direction of the screw lever between the first support 20 and the second support 30. The detection part 80 is fixed on the walking mechanism, specifically fixed on the ring member 70 and distributed circumferentially.

[0036] The body of the first support 20 and the body of the second support 30 are both annular bodies. The screw lever of the screw unit 50 is pivotally matched with the axial positions of the two supports (i.e. the first support 20 and the second support 30, the same below) at both ends, so that the screw lever can rotate relative to the two supports. That is, support structures need to be arranged in the inner rings of the two supports, on the one hand to make the two supports have reliable rigidity and sufficient support strength, and on the other hand to form matching assembly parts with the screw lever (of the screw unit 50). Figure 7 As shown, the body of the second support 30 can form a bottom plate at one side port, so that one end of the screw lever (of the screw unit 50) is matched with the multi-stage counterbore 37 formed on the bottom plate.

[0037] A first capsule 21 is fixedly arranged on the outer circumferential surface of the annular body of the first support 20, and a second capsule 31 is fixedly arranged on the outer circumferential surface of the annular body of the second support 30. The capsule walls of the first capsule 21 and the second capsule 31 are made of elastic material which also needs to have good toughness and strength and other physical properties, so that they can be elastically deformed and are not easily pierced. The first capsule 21 and the second capsule 31 are both annular, i.e. annular capsules, and the inner circumferential surface of the annular capsule is fixedly connected with the outer circumferential surface of the annular body of the two supports, so that the capsule is fixed on the annular body to form a whole. The cross section of the first capsule 21 can be circular or elliptical, and similarly, the cross section of the second capsule 31 can also be circular or elliptical.

[0038] The outer diameters of the first bladder 21 and the second bladder 31 can increase and decrease respectively with the expansion and contraction of their respective bladders. This allows the outer walls of the first bladder 21 and the second bladder 31 to alternately contact and detach from the inner wall 11 of the superheater tube 10, thus stably supporting the boiler superheater oxidation degree detection device of this application within the cavity of the superheater tube 10 and allowing it to be inserted into and removed from the cavity of the superheater tube 10. It is evident that initially, the (minimum) outer diameters of the first bladder 21 and the second bladder 31 are required to be smaller than the inner diameter of the superheater tube 10. By utilizing the elastic deformation capabilities of the walls of the first bladder 21 and the second bladder 31, the outer diameters of the first bladder 21 and the second bladder 31 can change size, switching between a state where their respective outer diameters are larger than the inner diameter of the superheater tube 10 and a state where their respective outer diameters are smaller than the inner diameter of the superheater tube 10.

[0039] In the above scheme, the first support 20 and the second support 30 can be used to support the axial ends of the drive mechanism, allowing the axial ends of the drive mechanism to be switched to a fixed state relative to the superheater pipe 10. At that time, the drive structure drives the traveling mechanism relative to the superheater pipe 10 (or relative to the drive mechanism) along the axial direction (i.e.,...). Figure 1 By moving the detection unit 80 (in the left-right direction as shown), it can move along the axial cavity extension direction of the superheated tube 10, thereby detecting the oxidation status at different axial positions on the inner wall surface 11. Because the relative fixed state between the first support 20, the second support 30, and the superheated tube 10 is achieved through the support of the capsule, the elastic deformation characteristics of the capsule / capsule wall can compensate for the unevenness of the inner wall surface 11. This allows for a large and sufficient contact surface to be established between the two supports and the superheated tube 10. Ultimately, the two supports stably fix the drive mechanism within the superheated tube 10, effectively suppressing excessive shaking and vibration of the detection unit 80 during movement. This ensures the accuracy and reliability of the detection during movement and allows for rapid movement relative to the superheated tube 10 without the need for pauses. Furthermore, when the first bladder 21 and the second bladder 31 set on the two supports are both inflated, the excellent buffering and vibration absorption capacity can effectively suppress the adverse effects of the mechanical vibration generated by the motor unit 40 (or the drive mechanism) on the shaking, vibration degree / state of the detection unit 80.

[0040] like Figures 1 to 7As shown, the detection parts 80 are multiple and are fixed on the outer circumferential surface of the ring member 70 in the circumferential direction. The ring member 70 is connected with the slider unit 60 through multiple damping units 90, so that the damping units 90 can dissipate / consume the vibration energy transmitted to the ring member 70 in the radial direction, so that the detection parts 80 can be kept in a better stable / radial static state, better control the vibration state of the detection parts 80, and facilitate to ensure the accuracy and reliability of the detection result in the state that the detection parts 80 move relative to the overheated pipe 10 quickly.

[0041] The slider unit 60 includes a slider body 61 and an assembly ring 62, and the slider body 61 is fixed relative to the inner ring of the assembly ring 62, and a radial connecting arm is arranged therebetween, so as to strengthen the rigidity and strength of the slider unit 60 as a whole. The lead screw lever of the lead screw unit 50 matches the slider body 61 and can drive the slider unit 60 to move. The assembly ring 62 is connected with the ring member 70 through four damping units 90, and a spacing is formed between the relative ring surface / end surface between the assembly ring 62 and the ring member 70. See Figure 2 、 Figure 3 A plurality of guide rods 51 are arranged between the two supports, and the slider body 61 matches the guide rods 51, so that the guide rods 51 can guide / constrain the slider body 61 to move linearly and reciprocally between the two supports.

[0042] The damping unit 90 includes a block 91 connected and matched with the slider unit 60 at one end, and a pair of damping cylinders (i.e., damping cylinder one 92 and damping cylinder two 93) fixed on the block 91 and extending to the other end of the ring member 70, so that the axis lines of the pair of damping cylinders are consistent with the radial direction of the ring member 70 and the cylinder rods of the pair of damping cylinders extend in opposite directions. As shown, Figures 2 to 4 The cylindrical cavity 911 is formed on the block 91, and a plurality of edge plates 912 are formed in the inner wall (axial) middle part of the cylindrical cavity 911. The damping cylinder one 92 and the damping cylinder two 93 respectively extend into the cylindrical cavity 911 through two ports of the cylindrical cavity 911, and the cylinder body end faces of the two damping cylinders are respectively matched with the edge plates 912, and the two damping cylinders are fixed in the cylindrical cavity 911, while the cylinder rods extend out of the cylindrical cavity 911. The axis lines of the four pairs of damping cylinders on the four damping units 90 extend in different radial directions of the ring member 70, and preferably cross into a cross or X shape.

[0043] Four pairs of connecting arm plates 72, corresponding one-to-one with the damping unit 90, are fixedly provided on the annular member 70, with the two pairs of connecting arm plates 72 arranged opposite each other in the radial direction of the annular member 70. The other end of the molded block 91 extends toward the end face of the annular member 70 and is positioned between the two pairs of connecting arm plates 72, allowing the free ends of the cylinder rods of the two pairs of damping cylinders to be fixed to the two pairs of connecting arm plates 72 respectively. (See [reference]) Figure 2 , Figure 3 As shown.

[0044] The axial extension direction of the pivot member disposed between the molded block 91 and the slider unit 60 is parallel to the axial extension direction of the annular member 70. Specifically, the pivot member is formed at one end of the molded block 91 facing the slider unit 60, and a spherical part 913 is formed at the free end of the pivot member; correspondingly, four shaft cavities 621 (corresponding to the molded blocks 91) are formed on the mounting ring 62 on the slider unit 60, and a spherical groove / spherical recess is formed at one end of each shaft cavity 621. The pivot member extends into the shaft cavity 621 and is fixed on the molded block 91, allowing the spherical part 913 to extend into the spherical groove, thus forming a spherical contact matching relationship between the spherical part 913 and the mounting ring 62. The shaft cavity 621 has a multi-stage through-hole structure, and the minimum inner diameter of the shaft cavity 621 is larger than the outer diameter of the pivot member. An elastic sleeve 914 can be fitted onto the pivot member, so that the elastic sleeve 914 corresponds to the other end port of the shaft cavity 621. At that time, the block 91 can rotate (with a small amplitude) relative to the assembly ring 62.

[0045] After the spherical part 913 matches the spherical groove, the block 91 can be fixed on the assembly ring 62, and the two can also rotate relative to each other, having a certain degree of rotational freedom. Four damping units 90 connect the annular part 70 to the assembly ring 62 on the slider unit 60. The spherical contact matching relationship formed between the spherical part 913 and the assembly ring 62 can cause the axial extension direction of the damping cylinders on other blocks 91 to change and follow up when one of the damping cylinders (cylinder rod) produces an active extension and retraction action, thus playing a good role in damping and vibration reduction.

[0046] An annular flange 71 is formed on one end of the annular member 70, and four pairs of planar sections 711 are arranged on the circumferential surface of the annular flange 71 and are distributed in the circumferential direction. Two planar sections 711 in each pair are formed on the outer circumferential surface and the inner circumferential surface of the annular flange 71, respectively. The end portions of the two pairs of connecting arm plates 72 are matched with the two pairs of planar sections 711 and are fixed on the annular flange 71, so as to sandwich the wall of the rim wall. The annular flange 71 is spaced apart from the opposite annular surface / end surface of the assembly ring 62. The detection sections 80 are fixed on the outer circumferential surface of the annular member 70.

[0047] As shown in Figure 1 , Figure 7 An axial flange 32 is formed on the outer end side (left end side or the end side away from the first support 20) of the second support 30, and four protrusions 33 are arranged on the axial flange 32 and are uniformly distributed in the circumferential direction. A roller assembly and a locking section 36 are arranged on the protrusions 33. The roller assembly includes a sliding arm 34 and a roller 35 pivotally arranged on one end of the sliding arm 34, and the roller 35 is a universal wheel.

[0048] A hole structure is formed on the protrusions 33, and the sliding arm 34 is matched with the hole structure through a sliding rail structure extending in the radial direction (of the second support 30), so that the roller assembly can move in the radial direction relative to the second support 30. The locking section 36 can switch the sliding arm 34 between a state of being fixed relative to the protrusions 33 and a state of being able to slide.

[0049] The locking part 36 is a bolt, and a threaded hole corresponding to the bolt is formed on the protrusion 33. A strip-shaped slot 341 is formed on the slide arm 34, and after the bolt is screwed into the threaded hole, the end of the bolt can be in contact with the bottom surface of the strip-shaped slot 341, and the slide arm 34 can be fixed and pressed in the hole structure of the protrusion 33 by the bolt, so that it cannot slide relative to the protrusion 33. When the bolt is unscrewed, the end of the bolt is out of contact with the bottom surface of the strip-shaped slot 341, and the slide arm 34 can be restored to a state in which it can slide relative to the protrusion 33. By adjusting the radial position of the slide arm 34 relative to the protrusion 33 or the outer circumferential edge of the second support 30, the wheel surface of the roller 35 can be selectively extended to the outside of the outer circumferential surface of the second capsule 31 (in the initial state), and the wheel surface of the roller 35 can be in contact with the inner side wall surface 11 of the superheated pipe 10 to support and guide the gradual extension of the second support 30 (one end of the second support 30 of the boiler superheater oxidation degree detection device) into the superheated pipe 10, which can reduce the contact friction resistance and prevent excessive wear of the capsule wall of the second capsule 31. The first support 20 and the motor unit 40 can be located outside the superheated pipe 10, as shown in Figure 1 .

[0050] A bottom plate is formed at the end of the second support 30 away from the first support 20, and the multi-stage counterbore 37 is formed at the center of the bottom plate. The end of the screw rod (i.e., the shaft rod) in the screw rod unit 50 is pivotally matched with the multi-stage counterbore 37, so that the shaft rod can rotate relative to the second support 30. One end (i.e., the left end in the view shown) of the guide rod 51 is fixed to the bottom plate, and the other end is fixed to the radial support arm (not shown) of the first support 20. Figure 1

[0051] The locking part 36 can also be a magnetic attraction locking mechanism, and the electromagnetic part of the magnetic attraction locking mechanism is fixed to the protrusion 33, and the armature part or permanent magnet part is fixed to the slide arm 34 and extends along the entire length of the strip-shaped slot 341, and the armature part or permanent magnet part can move along the slot depth direction of the strip-shaped slot 341 relative to the slide arm 34. When the electromagnetic part is kept in an energized state, the electromagnetic part can be magnetically attracted as a whole with the armature part or permanent magnet part, so that the slide arm 34 cannot move relative to the protrusion 33; on the contrary, when the electromagnetic part is kept in a de-energized state, the electromagnetic part loses its magnetism and cannot be magnetically attracted as a whole with the armature part or permanent magnet part, so that the slide arm 34 can be restored to a state in which it can move relative to the protrusion 33. The wire element connected with the electromagnetic part, the medium conveying pipe (gas conveying pipe) connected with the second capsule 31, etc. can be inserted into and close to the second support 30 through the shaft hole provided on the guide rod 51.

[0052] ​The above embodiments merely illustrate the principles of the present application and its effects, and are not intended to limit the present application. Many aspects of the present application can be modified without departing from the general idea, and those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea of the present application should be covered by the claims of the present application.

Claims

1. A boiler superheater oxidation degree detection device, comprising a linear drive assembly and a detection unit (80) disposed on the linear drive assembly; the linear drive assembly includes a matching drive mechanism and a traveling mechanism, enabling the traveling mechanism to move along the axial extension direction of the drive mechanism; the detection unit (80) is fixed on the traveling mechanism; characterized in that: The linear drive assembly also includes a first support (20) and a second support (30) that are respectively matched to the two ends of the axial direction of the drive mechanism. The main body of the first support (20) and the main body of the second support (30) are both annular bodies, and the first bladder (21) and the second bladder (31) are respectively arranged on the outer peripheral surface of the two annular bodies; the outer diameter of the first bladder (21) and the outer diameter of the second bladder (31) can increase and decrease respectively with the expansion and contraction state of their respective bladders; The drive mechanism includes a matching motor unit (40) and a lead screw unit (50); the travel mechanism includes a slider unit (60). The two ends of the lead screw unit (50) are respectively matched with the first support (20) and the second support (30), so that the lead screw can rotate relative to the two supports; the motor in the motor unit (40) is fixed on the first support (20); The slider unit (60) is matched with the wire lever and is located between the first support (20) and the second support (30), and can move along the axial direction of the wire lever; The walking mechanism also includes a ring-shaped component (70) and the detection unit (80) is fixed alternately on the ring-shaped component (70) in a circumferential direction; The annular component (70) and the slider unit (60) are connected by multiple damping units (90), so that the damping units (90) can dissipate the vibration energy transmitted to the annular component (70) in the radial direction. The damping unit (90) includes a block (91) that is connected and matched to the slider unit (60) at one end, and a pair of damping cylinders fixed on the other end of the block (91) extending toward the annular member (70), such that the axial extension direction of the pair of damping cylinders is consistent with the radial direction of the annular member (70) and the cylinder rods of the pair of damping cylinders extend in opposite directions. The axis of the pivot member, which is fitted between the block (91) and the slider unit (60), is parallel to the axis of the ring member (70), and a spherical surface (913) is formed at the free end of the pivot member, and a spherical groove that matches the spherical surface of the spherical surface (913) is formed on the slider unit (60). Multiple pairs of connecting arm plates (72) that correspond one-to-one with the damping unit (90) are fixedly provided on the annular part (70), and the two pairs of connecting arm plates (72) are arranged opposite to each other in the radial direction of the annular part (70); the free ends of the cylinder rods of the two pairs of damping cylinders are respectively fixed on the two pairs of connecting arm plates (72); The slider unit (60) includes a slider body (61) and an assembly ring (62); the lead screw unit (50) has a lead lever that matches the slider body (61); Multiple shaft cavities (621) are formed on the assembly ring (62) and are distributed alternately in the circumferential direction, corresponding one-to-one with the molded blocks (91); the shaft cavities (621) are multi-stage through-hole structures, and the spherical grooves are formed on the shaft cavities (621) at one end away from the molded blocks (91); the inner diameter of the shaft cavity (621) is larger than the outer diameter of the pivot; the pivot passes through the shaft cavity (621) and is fixedly connected to the molded blocks (91), and the spherical surface (913) and the spherical grooves can establish a spherical contact matching relationship; An elastic sleeve (914) is fitted onto the pivot and the elastic sleeve (914) is positioned at one end of the shaft cavity (621) near the block (91).

2. The boiler superheater oxidation degree detection device according to claim 1, characterized in that: The slider unit (60) includes a slider body (61) and an assembly ring (62); the lead screw unit (50) has a lead lever that matches the slider body (61), and the assembly ring (62) is connected to the ring part (70) through multiple damping units (90).

3. The boiler superheater oxidation degree detection device according to claim 1 or 2, characterized in that: The number of damping units (90) is more than four and they are distributed alternately around the circumference.

4. The boiler superheater oxidation degree detection device according to claim 1, characterized in that: An axial flange (32) is formed on the second support (30), and a plurality of protrusions (33) are formed on the axial flange (32) and distributed alternately in the circumferential direction; a roller assembly and a locking part (36) are disposed on the protrusions (33); the roller assembly includes a sliding arm (34) and a roller (35) pivotally disposed at one end of the sliding arm (34). The sliding arm (34) and the protrusion (33) are matched by a radially extending slide rail structure, so that the roller assembly can move radially relative to the second support (30); the locking part (36) can switch the sliding arm (34) between a fixed state relative to the protrusion (33) and a state in which it can slide.

5. The boiler superheater oxidation degree detection device according to claim 1, characterized in that: A base plate is formed at the port of the second support (30) away from the first support (20), and a multi-stage countersunk hole (37) is formed at the center of the base plate; the end of the shaft member in the drive mechanism is pivotally matched with the multi-stage countersunk hole (37).

Images