A heat-resistant magnetic suction type PA probe device
Patent Information
- Application Number
- CN202521437883.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-07-10
AI Technical Summary
[0003]本实用新型的目的在于提供一种耐热磁吸式PA探头装置，其解决了现有的采用螺柱焊的方式固定的PA探头装置不方便后期对PA探头装置的维护以及难避免对设备设施的表面产生一定的损伤
本实用新型设置有磁吸固定机构，通过磁铁组实现PA探头装置在检测面上的快速吸附固定，方便后期对PA探头装置的维护也不会对设备设施的表面产生损伤，并且驱动部可调节转动座以切换不同磁极强度的磁铁组，确保了稳定吸附，又能适应不同表面粗糙度检测需求，提高使用的适用性，同时探头主体处于隔热机构内，通过隔热机构提高该PA探头装置的耐高温性能，延长该PA探头装置的使用寿命。
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Figure CN224840076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrasonic testing probes, specifically to a heat-resistant magnetic PA probe device. Background Technology
[0002] In the field of industrial non-destructive testing, phased array ultrasonic (PA) probe devices have been widely used for defect detection in various equipment. However, existing PA probe devices still have significant shortcomings. For example, existing PA probe devices are usually fixed by stud welding, but this method has the following drawbacks: the probe is fixed after welding and cannot be moved, making it inconvenient for subsequent maintenance of the PA probe device. Furthermore, it is difficult to avoid some damage to the surface of equipment during the welding process. Therefore, it is unsuitable for industries with high-risk and harsh environments such as petrochemicals and nuclear power. Moreover, existing PA probe devices generally face reliability issues such as piezoelectric crystal depolarization and backing material softening under high-temperature environments, resulting in a short service life. Therefore, we propose a heat-resistant magnetic PA probe device. Utility Model Content
[0003] The purpose of this utility model is to provide a heat-resistant magnetic PA probe device, which solves the problems of the inconvenience of later maintenance of the PA probe device and the unavoidable damage to the surface of the equipment and facilities caused by the existing PA probe device fixed by stud welding.
[0004] This utility model achieves the above objectives through the following technical solutions: A heat-resistant magnetic PA probe device includes a probe body, a heat insulation mechanism sleeved on the outside of the probe body, and a magnetic fixing mechanism disposed within the heat insulation mechanism. The heat insulation mechanism includes a heat insulation cylinder. The magnetic fixing mechanism includes a rotating seat rotatably disposed within the heat insulation cylinder and movably sleeved on the outside of the detection end of the probe body, a driving part disposed on the heat insulation cylinder for driving the rotating seat to rotate, and a magnetic shielding plate disposed within the heat insulation cylinder and attached to one side of the rotating seat. Several sets of magnets with different magnetic pole strengths are embedded on the side of the rotating seat facing the magnetic shielding plate, and the magnetic shielding plate has an opening corresponding to one of the magnet sets.
[0005] A further improvement is that two sets of magnets are embedded in the rotating base, each set of magnets comprising two sets of magnetic blocks with the same magnetic pole strength, and the magnetic shielding plate is provided with openings corresponding to the two magnetic blocks in the magnet sets.
[0006] A further improvement is that one end of the magnetic block is connected to a contact rod that moves through the rotating seat away from the magnetic shielding plate. The outer wall of the contact rod is fitted with an elastic element two that supports it. The heat insulation cylinder is also provided with an operating part that drives the contact rod of one of the magnet groups to make the magnetic block pass through the opening.
[0007] A further improvement is that the operating part includes movable rods symmetrically and movably inserted on both sides of the heat insulation cylinder, a wedge-shaped block at one end of the movable rod for sliding contact with the contact rod, an operating plate at the other end of the movable rod, a locking pin on the side of the operating plate facing the heat insulation cylinder, and a locking groove on the outer wall of the heat insulation cylinder for the locking pin to be inserted.
[0008] A further improvement is that the driving unit includes an arc-shaped rack mounted on a rotating seat and coaxial with the rotating seat. The outer wall of the heat insulation cylinder has a movable opening. A turning gear for meshing with the arc-shaped rack is rotatably mounted inside the movable opening. Limiting blocks are provided at both ends of the arc-shaped rack. When the turning gear contacts one limiting block, the opening corresponds to one magnetic group. When the turning gear contacts another limiting block, the opening corresponds to another magnetic group.
[0009] A further improvement is that the end of the heat insulation cylinder away from the magnetic shielding plate is detachably provided with a heat insulation cylinder cover. One side of the heat insulation cylinder cover is connected to a movable plate for contacting the probe body through an elastic element. Both the elastic element and the movable plate are located inside the heat insulation cylinder. A limiting plate is provided inside the heat insulation cylinder and above the operating part. The limiting plate is movably sleeved on the outside of the detection end of the probe body.
[0010] A further improvement is that a vacuum insulation cavity is formed within the wall thickness of the insulation cylinder.
[0011] The beneficial effects of this utility model are as follows: This invention features a magnetic fixing mechanism that uses a magnet assembly to quickly attach and fix the PA probe device to the detection surface. This facilitates future maintenance of the PA probe device and prevents damage to the surface of the equipment. Furthermore, the adjustable rotating base of the drive unit allows for switching between magnet assemblies with different magnetic pole strengths, ensuring stable attachment and adapting to different surface roughness detection requirements, thus improving applicability. Simultaneously, the probe body is housed within a heat insulation mechanism, which enhances the high-temperature resistance of the PA probe device and extends its service life. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Structural sectional view; Figure 3 This is a partial structural diagram of the rotating seat of this utility model.
[0013] In the diagram: 100, heat insulation mechanism; 101, heat insulation cylinder; 102, heat insulation cylinder cover; 103, movable plate; 104, elastic element one; 105, limiting plate; 106, vacuum heat insulation cavity; 200, probe body; 300, magnetic fixing mechanism; 301, rotating seat; 302, actuating gear; 303, rack; 304, limiting block; 305, magnetic shielding plate; 306, movable rod; 307, magnet assembly; 308, wedge block; 309, contact rod; 310, elastic element two. Detailed Implementation
[0014] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0015] Example 1 Please see the appendix Figure 1-2 A heat-resistant magnetic PA probe device includes a probe body 200, which is an ultrasonic testing probe and is a conventional device in the field, and will not be described in detail here. It also includes a heat insulation mechanism 100 sleeved on the outside of the probe body 200 and a magnetic attraction fixing mechanism 300 disposed inside the heat insulation mechanism 100; The heat insulation mechanism 100 includes a heat insulation cylinder 101, which is made of high-performance heat insulation materials, such as ceramic fiber or aerogel insulation materials, but is not limited to these two types, to improve the service life and stability of the PA probe device in high-temperature environments. The magnetic attraction fixing mechanism 300 includes a rotating seat 301 rotatably disposed within the heat insulation cylinder 101 and movably sleeved on the outside of the detection end of the probe body 200; a driving part disposed on the heat insulation cylinder 101 for driving the rotating seat 301 to rotate; and a magnetic shielding plate 305 (made of non-magnetic material, such as rubber or ceramic) disposed within the heat insulation cylinder 101 and attached to one side of the rotating seat 301. Several sets of magnet groups 307 with different magnetic pole strengths are embedded on the side of the rotating seat 301 facing the magnetic shielding plate 305. The magnetic shielding plate 305 has an opening corresponding to a magnet group 307. When the magnetic... When the iron assembly 307 corresponds to the port, the PA probe device can be magnetically fixed to the position to be tested (test surface) by the magnet assembly 307. The rotating seat 301 can be rotated by the drive unit so that different magnet assemblies 307 correspond to the port, thereby adjusting the magnetic pole strength of the required magnet assembly 307 to match the requirements of different testing scenarios for adsorption force and positioning accuracy, adapt to different surface roughness testing requirements, and improve the applicability of use. It should be noted that the side of the magnetic shielding plate 305 away from the rotating seat 301 is flush with one end of the heat insulation cylinder 101.
[0016] Preferably, in this embodiment, the rotating seat 301 is provided with two sets of magnet groups 307. The magnet group 307 includes two sets of magnetic blocks with the same magnetic pole strength. The magnetic shielding plate 305 is provided with an opening corresponding to the two magnetic blocks in the magnet group 307. The two magnetic blocks in the magnet group 307 have the same magnetic pole strength, while the magnetic pole strength of the magnetic blocks in different magnet groups 307 is different. The cross-section of the magnetic block can be rectangular or circular, etc. Preferably, in this embodiment, one end of the magnetic block is connected to a contact rod 309 that movably passes through the rotating seat 301 away from the magnetic shielding plate 305. One end of the contact rod 309 is embedded with a ball, and the outer wall of the contact rod 309 is fitted with an elastic element 310 (such as a spring) to support it. One end of the elastic element 310 is connected to the rotating seat 301, and the other end is connected to the outer wall of the contact rod 309. The heat insulation cylinder 101 is also provided with an operating part that drives the contact rod 309 in one of the magnet groups 307 to pass the magnetic block through the opening. Considering that the magnetic shielding plate 305 has a certain thickness, in order to ensure that the magnetic block in the magnet group 307 can achieve stable adsorption and fixation after the corresponding opening, the magnetic block in the corresponding opening can be displaced by adjusting the operating part, so that its adsorption surface is flush with the end face of the heat insulation cylinder 101 or appropriately extends out of the end face of the heat insulation cylinder 101, thereby ensuring a reliable magnetic attraction and fixation effect.
[0017] Preferably, the operating part of this embodiment includes movable rods 306 symmetrically and movably inserted on both sides of the heat insulation cylinder 101, and a wedge-shaped block 308 disposed at one end of the movable rod 306 for sliding contact with a contact rod 309. The wedge-shaped block 308 is a right-angled trapezoid and its inclined surface contacts the contact rod 309. Figure 2 As can be seen, the inclined surface of the wedge block 308 is positioned above the probe body 200 at one end, and the other end of the movable rod 306 is equipped with an operating plate for manual operation. The side of the operating plate facing the heat insulation cylinder 101 is equipped with a locking post, and the outer wall of the heat insulation cylinder 101 is equipped with a slot for the locking post to be inserted. When switching the magnet assembly 307, the operating plate must first be pulled outward to move the movable rod 306. Then, the rotating seat 301 is driven to rotate through the drive unit until the other magnet assembly 307 is aligned with the through-hole. Next, the operating plate is pressed inward, and the movable rod 306 pushes the wedge block 308 against the contact rod 309 of the corresponding magnetic block, so that the magnetic block passes through the through-hole, and the locking post is embedded in the corresponding slot to achieve fixation.
[0018] Preferably, the drive unit of this embodiment includes an arc-shaped rack 303 disposed on the rotating seat 301 and coaxial with the rotating seat 301. The outer wall of the heat insulation cylinder 101 has a movable opening. A turning gear 302 for meshing with the arc-shaped rack 303 is rotatably disposed in the movable opening. A part of the outer wall of the turning gear 302 meshes with the arc-shaped rack 303, and another part of the outer wall is located outside the heat insulation cylinder 101, allowing the operator to manually turn it. Both ends of the arc-shaped rack 303 are provided with limiting blocks 304. When the actuating gear 302 contacts one limiting block 304, the opening corresponds to one magnetic group. When the actuating gear 302 contacts another limiting block 304, the opening corresponds to another magnetic group. This setting makes it convenient for users to flexibly switch between the two magnetic groups by cooperating with the actuating gear 302, the arc-shaped rack 303, and the limiting blocks 304. It should be noted that when the operator does not need to use the magnet assembly 307, the rotating seat 301 can be driven to rotate by turning the gear 302, so that the non-magnetic area between the two magnet assemblies 307 is aligned with the opening, thereby effectively preventing the magnet assembly 307 from accidentally adsorbing external magnetic materials.
[0019] Example 2 Please see the appendix Figure 1-3 Based on Embodiment 1, in this embodiment, the end of the heat insulation cylinder 101 away from the magnetic shielding plate 305 is detachably equipped with a heat insulation cylinder cover 102. The heat insulation cylinder cover 102 and the heat insulation cylinder 101 can be connected by bolts for easy maintenance of the internal probe body 200. It should be noted that the heat insulation cylinder cover 102 also has a through hole for the wires of the probe body 200 to pass through. One side of the heat insulation cylinder cover 102 is connected to a movable plate 103 for contacting the probe body 200 by an elastic element 104 (such as a spring). The elastic element 104 and the heat insulation cylinder cover 102 can be detachably connected by a snap-fit structure for easy replacement. The movable plate 103 is preferably annular. Both the elastic element 104 and the movable plate 103 are located inside the heat insulation cylinder 101. A limiting plate 105 is provided inside and above the operating part to limit the position of the probe body 200 inside the heat insulation cylinder 101. The limiting plate 105 is movably sleeved on the outside of the detection end of the probe body 200. With this setting, the movable plate 103 always maintains close contact with the probe body 200 under the elastic force of the elastic element 104, so that the detection end of the probe body 200 elastically contacts the detection surface, ensuring stable contact between the detection end of the probe body 200 and the detection surface, and extending the service life of the probe body 200. It should be noted that the elastic coefficient of the elastic element 104 is less than the magnetic pole strength of the magnet assembly 307, ensuring stable contact of the probe body 200 without affecting the adsorption and fixation effect of the magnet assembly 307 due to the compression of the elastic element 104.
[0020] Preferably, in this embodiment, a vacuum insulation cavity 106 is provided within the wall thickness of the insulation cylinder 101 to improve the heat insulation performance of the insulation cylinder 101.
[0021] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A heat-resistant magnetic PA probe device, comprising a probe body (200), characterized in that, It also includes a heat insulation mechanism (100) sleeved on the outside of the probe body (200) and a magnetic attraction fixing mechanism (300) disposed in the heat insulation mechanism (100); wherein, the heat insulation mechanism (100) includes a heat insulation cylinder (101); the magnetic attraction fixing mechanism (300) includes a rotating seat (301) rotatably disposed in the heat insulation cylinder (101) and movably sleeved on the outside of the detection end of the probe body (200), a driving part disposed on the heat insulation cylinder (101) for driving the rotating seat (301) to rotate, and a magnetic shielding plate (305) disposed in the heat insulation cylinder (101) and attached to one side of the rotating seat (301), wherein the rotating seat (301) is provided with a plurality of sets of magnets (307) with different magnetic pole strengths on the side facing the magnetic shielding plate (305), and the magnetic shielding plate (305) is provided with an opening corresponding to a set of magnets (307).
2. The heat-resistant magnetic PA probe device according to claim 1, characterized in that, Two sets of magnet groups (307) are embedded in the rotating seat (301). The magnet group (307) includes two sets of magnetic blocks with the same magnetic pole strength. The magnetic shielding plate (305) is provided with openings corresponding to the two magnetic blocks in the magnet group (307).
3. The heat-resistant magnetic PA probe device according to claim 2, characterized in that, One end of the magnetic block is connected to a contact rod (309) that moves through the rotating seat (301) away from the magnetic shield (305). The outer wall of the contact rod (309) is fitted with an elastic element (310) that supports it. The heat insulation cylinder (101) is also provided with an operating part that drives the contact rod (309) in one of the magnet groups (307) to pass the magnetic block through the opening.
4. The heat-resistant magnetic PA probe device according to claim 3, characterized in that, The operating part includes movable rods (306) symmetrically and movably inserted on both sides of the heat insulation cylinder (101), a wedge block (308) provided at one end of the movable rod (306) for sliding contact with the contact rod (309), an operating plate provided at the other end of the movable rod (306), a locking post provided on the side of the operating plate facing the heat insulation cylinder (101), and a locking groove provided on the outer wall of the heat insulation cylinder (101) for the locking post to be inserted.
5. The heat-resistant magnetic PA probe device according to claim 2, characterized in that, The driving unit includes an arc-shaped rack (303) mounted on a rotating base (301) and coaxial with the rotating base (301). The outer wall of the heat insulation cylinder (101) has an opening for movement. A gear (302) for meshing with the arc-shaped rack (303) is rotatably mounted inside the opening. Both ends of the arc-shaped rack (303) are provided with limiting blocks (304). When the gear (302) contacts one limiting block (304), the opening corresponds to one magnetic group. When the gear (302) contacts another limiting block (304), the opening corresponds to another magnetic group.
6. The heat-resistant magnetic PA probe device according to claim 4, characterized in that, The heat insulation cylinder (101) is detachably provided with a heat insulation cylinder cover (102) at one end away from the magnetic shielding plate (305). One side of the heat insulation cylinder cover (102) is connected to a movable plate (103) for contacting the probe body (200) via an elastic element (104). Both the elastic element (104) and the movable plate (103) are located inside the heat insulation cylinder (101). A limiting plate (105) is provided inside the heat insulation cylinder (101) and above the operating part. The limiting plate (105) is movably sleeved on the outside of the detection end of the probe body (200).
7. The heat-resistant magnetic PA probe device according to claim 1, characterized in that, The heat insulation cylinder (101) has a vacuum heat insulation cavity (106) inside its wall thickness.