Device for nondestructive testing of plate surface of plate heat exchanger

Abstract

The utility model discloses a plate heat exchanger sheet surface nondestructive testing device which comprises a base, a supporting frame is arranged at the top of the base, and limiting units are arranged on the two sides of the supporting frame. The utility model relates to the technical field of plate heat exchanger plate surface detection, in particular to a plate heat exchanger plate surface nondestructive testing device, which can adapt to penetration testing process of plates with different sizes in a certain range, and a support frame is matched with a fixing unit to fix the plates with a certain size.

Description

TECHNICAL FIELD

[0001] The utility model relates to plate heat exchanger plate surface detection technical field, concretely to a kind of plate heat exchanger plate surface nondestructive testing device. BACKGROUND

[0002] Plate heat exchanger is the new type of high efficiency, compact heat exchanger that is developed and widely used in recent ten years, which is stacked by a series of parallel thin metal plates with corrugated surface.

[0003] In the related art, after the plate is pressed, microcracks are easily generated on the surface of the plate, causing the plate to be damaged. In the past plate microcrack inspection process, multiple processes and multiple sets of equipment are required to clean the surface of the plate, penetrate and develop the plate to inspect and observe the microcracks in the plate, resulting in that the plate microcrack detection is difficult to implement and the inspection efficiency is low. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a plate heat exchanger plate surface nondestructive testing device, which solves the problems of difficult plate microcrack detection implementation and low inspection efficiency in the plate microcrack inspection process.

[0005] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme: a plate heat exchanger plate surface nondestructive testing device, comprising a base, a support frame is arranged on the base, the bottom frame of the support frame is rotatably and lockably connected with the base, the two side frames of the support frame are each provided with a limiting unit, the limiting unit comprises a sliding groove, a sliding block, a compression spring, a limiting rod and a clamping plate, wherein the sliding groove is formed in the side surface of the side frame, the sliding block is slidably and lockably arranged in the sliding groove, the end of the sliding block away from the sliding groove is provided with a connecting hole, the limiting rod passes through the connecting hole and is provided with the clamping plate at the first end and a boss at the second end, and the compression spring is sleeved on the limiting rod, one end of the compression spring abuts against the sliding block, and the other end of the compression spring abuts against the boss.

[0006] Preferably, the number of sliding blocks is multiple, and multiple sliding blocks are arranged in the sliding groove at intervals.

[0007] Preferably, a hinge seat is arranged on the base, the bottom frame of the support frame is provided with an extension part matched with the hinge seat, and the extension part is hingedly connected with the hinge seat through a hinge shaft.

[0008] Preferably, the back surfaces of the two side frames of the support frame are hingedly connected with support frames, a plurality of clamping grooves matched with the support frames are arranged on the base, and the clamping grooves are arranged at intervals along the extension direction of the base.

[0009] Preferably, the front surface of the bottom frame of the support frame is provided with a bottom limiting protrusion for supporting the bottom end of the plate heat exchanger plate.

[0010] Preferably, the base is provided with a collecting groove, and the bottom surface of the collecting groove is gradually inclined downward away from the support frame.

[0011] Preferably, the clamping plate is embedded with a friction pad on the side close to the support frame.

[0012] Preferably, a light source is further included, and the light source is arranged on the back surface of the support frame.

[0013] Preferably, the back surface of the support frame is provided with a plurality of clamping seats for clamping the light source, and the clamping seats are arranged at intervals along the width direction of the support frame.

[0014] Preferably, the inner wall of the sliding groove is inserted with a fixing seat, and the fixing seat is fixedly connected with the support frame through a screw.

[0015] The utility model provides a kind of plate heat exchanger plate piece surface nondestructive testing device, with following beneficial effects: the plate heat exchanger plate piece surface nondestructive testing device can be adapted to the penetration detection process of different size plate pieces within a certain range, and the support frame cooperates with limiting unit to fix plate pieces within a certain size;The bottom frame of the support frame is rotatably and lockably connected with the base, so that flexible fixing at multiple angles can be realized, plate surface cleaning agent, penetrant and developer spraying are facilitated, thereby integrating plate piece microcrack detection equipment, and the inspection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is Figure 1 working state schematic diagram;

[0018] Figure 3 It is Figure 1 structure schematic diagram of support frame, sliding block and clamping plate in it;

[0019] Figure 4 It is Figure 3 structure schematic diagram of compression spring, limiting rod and clamping plate in it;

[0020] Figure 5 It is Figure 1 structure schematic diagram of support frame, light source and clamping seat in it;

[0021] Figure 6 It is Figure 1 right view of it;

[0022] Figure 7 is another working state schematic view of Figure 6 is another working state schematic view of

[0023] Figure 8 is another working state schematic view of Figure 6 is another working state schematic view of

[0024] In the figure: 1, base; 11, collecting groove; 12, clamping groove; 2, support frame; 21, clamping seat; 22, support frame; 23, limiting protrusion; 3, limiting unit; 31, sliding groove; 311, fixed seat; 32, sliding block; 33, compression spring; 34, limiting rod; 35, clamping plate; 351, friction pad; 4, light source. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] By those skilled in the art, the parts in the case are connected in sequence, and the specific connection and operation sequence should be referred to the following working principle, and the detailed connection means is the known technology in the art, and the following mainly introduces the working principle and process.

[0027] In the plate micro-crack inspection process, the plate area is large, which leads to the following difficulties in the plate micro-crack detection process: plate surface cleaning, penetration and imaging, and micro-crack observation process implementation.

[0028] Therefore, the present application provides a plate heat exchanger plate surface nondestructive testing device which can adapt to the penetration detection process of plates of different sizes within a certain range, and the support frame and the fixing unit can fix plates within a certain size.

[0029] By Figures 1-8It can be known that the device for nondestructive testing of plate heat exchanger plate surface provided in the present disclosure comprises a base 1, a support frame 2 is arranged on the base 1, the bottom frame of the support frame 2 is rotatably and lockably connected with the base 1, the side frames of the support frame 2 are each provided with a limiting unit 3, the limiting unit 3 comprises a sliding groove, a sliding block, a compression spring, a limiting rod and a clamping plate, wherein the sliding groove is opened in the side surface of the side frame, the sliding block is slidably and lockably arranged in the sliding groove, the end of the sliding block away from the sliding groove is provided with a connecting hole, the limiting rod passes through the connecting hole and is provided with the clamping plate at the first end and a boss at the second end, and the compression spring is sleeved on the limiting rod and abuts against the sliding block at one end and the boss at the other end.

[0030] Through the above technical scheme, the device for nondestructive testing of plate heat exchanger plate surface can adapt to the penetration detection process of plate pieces of different sizes within a certain range, the support frame cooperates with the limiting unit to fix the plate pieces within a certain size, the bottom frame of the support frame is rotatably and lockably connected with the base, flexible fixing at multiple angles can be realized, the plate surface cleaning agent, penetration agent and developing agent can be sprayed conveniently, thereby the detection equipment of plate piece micro-cracks is integrated, and the inspection efficiency is improved.

[0031] The base 1 serves as the overall support structure, the surface of the support frame 2 is used for fixing the plate heat exchanger plate to be detected, and the plate heat exchanger plate is fixed through the limiting unit 3, the purpose of the sliding groove 31 is to limit the sliding block 32, so that the sliding block 32 can be adjusted up and down along the side surface of the support frame 2 at will, and the number of the sliding blocks 32 is multiple, the multiple sliding blocks 32 are arranged at intervals in the sliding groove 31, the number of the sliding blocks 32 can be increased or reduced according to the requirement, the edges of the plate heat exchanger plate can be fixed at multiple different positions, the compression spring 33 is sleeved on the outer wall of the limiting rod 34 and will not fall off, and through the boss structure at the end of the limiting rod 34, the clamping plate 35 is pressed against the surface of the support frame 2 through the limiting rod 34, so that the plate heat exchanger plate is clamped and fixed, after the plate heat exchanger plate is fixed, the penetration detection can be conveniently performed, including the plate surface cleaning, penetration and developing in the plate piece micro-crack detection process and the observation process of the micro-cracks.

[0032] In order to realize the rotatable connection of the support frame 2 and the base 1, in some implementable modes, a hinge seat is arranged on the base 1, the bottom frame of the support frame 2 is provided with an extension part matched with the hinge seat, and the extension part is hingedly connected with the hinge seat through a hinge shaft. Thus, the angle between the extension part of the support frame 2 and the hinge seat can be adjusted, the relative angle between the support frame 2 and the base 1 is changed, and the plate arranged on the support frame 2 can be observed at more angles.

[0033] In order to facilitate the rotatable and lockable connection between the support frame 2 and the base 1, in some implementable manners, the back surface of the two side frames of the support frame 2 is hingedly connected with a support frame 22, and the base 1 is provided with a plurality of clamping grooves 12 matched with the support frame 22, and the clamping grooves 12 are arranged along the extension direction of the base 1. For example, the number of clamping grooves 12 is multiple, and the angle between the support frame 2 and the base 1 when the support frame 22 is inserted into the corresponding clamping groove 12 is known, for example, when the frontmost clamping groove 12 is matched with the support frame 22, the angle between the support frame 2 and the base 1 can be 80°, and when the second frontmost clamping groove 12 is matched with the support frame 22, the angle between the support frame 2 and the base 1 can be 70°.

[0034] In this way, through the arrangement of the base 1, the support frame 2 and the limiting unit 3, the problems of large plate size, various corrugation patterns, lack of professional plate penetration detection device, large detection difficulty, low efficiency, inconvenient plate surface cleaning, penetration and developer spraying, difficult to apply uniformly, and difficult to observe after development are solved.

[0035] In an implementable manner, please refer to Figure 4 , the friction pad 351 is embedded in the side of the clamping plate 35 close to the support frame 2. The friction pad 351 can be made of rubber or any material that can increase friction, and the purpose is to increase the friction between the clamping plate 35 and the plate heat exchanger plate, which is beneficial to clamping and fixing.

[0036] In an implementable manner, please refer to Figure 1 , Figure 2 and Figure 5 , the support frame 2 is provided with a light source 4 on the back surface. In the specific implementation process, it is particularly worth pointing out that the light source 4 is mainly arranged on the back surface of the support frame 2, and additional arrangements can be made according to actual needs, for example, arranged on both sides of the support frame 2. The light source can be ultraviolet light, and the plate can be observed through the irradiation of the light source 4.

[0037] In an implementable manner, the back surface of the support frame 2 is provided with a clamping seat 21 for clamping the light source, and the number of clamping seats 21 is multiple and is arranged along the width direction of the support frame 2. In the specific implementation process, the specific shape of the clamping seat 21 can be designed according to the type and size of the light source 4. In the provided drawings of the embodiment, a rod-shaped light body is selected as the light source 4, so the clamping seat 21 is designed as a semicircular groove matched with it.

[0038] In an implementable manner, please refer to Figure 1 , Figure 2 , Figure 6 , 7 and Figure 8The top of the base 1 is provided with a collecting groove 11, the bottom surface of the collecting groove 11 is gradually inclined downward away from the supporting frame 2, that is, the side of the collecting groove 11 close to the supporting frame 2 is higher, and inclined to the other side, so that the inside of the collecting groove 11 is conducive to collecting the liquid in the detection process, such as cleaning liquid, penetrating liquid, developing agent and the like. It can meet the detection requirements of different types of plate heat exchanger plate micro-crack detection, and is suitable for detection use requirements in any working place, has wider detection range, is convenient to carry, and solves the environmental pollution problem caused in the plate penetration detection process.

[0039] Further, the front bottom of the supporting frame 2 is provided with a limiting protrusion 23. In the specific implementation process, it is particularly worth pointing out that the limiting protrusion 23 and the supporting frame 2 are integrally formed, which can support the bottom of the plate to be detected, and improve the fixing effect of the clamping plate 35.

[0040] In an implementable manner, please refer to Figure 3 The inner wall top of the sliding groove 31 is inserted with a fixing seat 311, and the fixing seat 311 is fixedly connected with the supporting frame 2 through screws.

[0041] In the specific implementation process, it is particularly worth pointing out that the fixing seat 311 and the sliding groove 31 are matched, and the edge of the sliding groove 31 is blocked, so that the sliding block 32 is prevented from falling off from the inside of the sliding groove 31, the clamping and fixing effect of the plate is ensured, the fixing seat 311 can be removed, and the number of sliding blocks 32 can be increased or reduced.

[0042] Working principle:

[0043] According to the size of the clamped plate, the number of sliding blocks 32 is increased or reduced, then the fixing seat 311 is installed on the inner wall of the sliding groove 31, the edge of the sliding groove 31 is blocked, the sliding block 32 is prevented from falling off from the inside of the sliding groove 31, the clamping and fixing effect of the plate is ensured, the limiting rod 34 is rotated, the clamping plate 35 is rotated one hundred and eighty degrees around the limiting rod 34, that is, the surface of the clamping plate 35 is separated from the surface of the supporting frame 2, the plate to be detected is attached to the front surface of the supporting frame 2, the bottom is abutted against the top of the limiting protrusion 23 at the front bottom of the supporting frame 2, the limiting rod 34 is pushed, the compression spring 33 is compressed, at this time, the clamping plate 35 has a certain distance from the supporting frame 2, and the clamping plate 35 is rotated one hundred and eighty degrees around the limiting rod 34, the external force on the limiting rod 34 is removed, under the action of the compression spring 33, the clamping plate 35 is clamped on the surface of the plate to be detected on the surface of the supporting frame 2, at this time, according to the use requirement, the angle of the supporting frame 2 is rotated, and the angle of the supporting frame 2 is fixed through the supporting frame 22 and the clamping groove 12, so that the penetration detection can be carried out, including the plate surface cleaning, penetration, development and micro-crack observation process in the plate micro-crack detection process, in this process, a proper number of light sources 4 can be used according to the requirement, and the light sources 4 and the supporting frame 2 are fixed through the clamping seat 21.

[0044] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connecting" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0046] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for non-destructive testing of the surface of plate heat exchanger plates, characterized in that, The device includes a base with a support frame on it. The bottom frame of the support frame is rotatably and lockably connected to the base. Both sides of the support frame are provided with limit units. Each limit unit includes a groove, a slider, a compression spring, a limit rod, and a clamping plate. The groove is located on the side of the frame. The slider is slidably and lockably disposed in the groove. The end of the slider away from the groove has a connecting hole. The limit rod passes through the connecting hole and has the clamping plate at one end and a boss at the second end. The compression spring is sleeved on the limit rod, with one end abutting against the slider and the other end abutting against the boss.

2. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, The number of sliders is multiple, and the multiple sliders are arranged at intervals within the groove.

3. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, The base is provided with a hinge seat, and the bottom frame of the support frame is provided with an extension that cooperates with the hinge seat. The extension is hinged to the hinge seat through a hinge shaft.

4. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 3, characterized in that, The back of the two side frames of the support frame are hinged to the support frame. The base is provided with a plurality of snap-fit ​​grooves that cooperate with the support frame. The snap-fit ​​grooves are arranged at intervals along the extension direction of the base.

5. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, The bottom frame of the support frame has a bottom limit protrusion on its front side, which is used to support the bottom end of the plate heat exchanger plate.

6. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, The base is provided with a collection groove, and the bottom surface of the collection groove gradually slopes downward toward the side away from the support frame.

7. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, The clamping plate has a friction pad embedded on the side near the support frame.

8. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, It also includes a light source, which is disposed on the back of the support frame.

9. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 8, characterized in that, The back of the support frame is provided with a mounting bracket for holding the light source. There are multiple mounting brackets, which are spaced apart along the width direction of the support frame.

10. The apparatus for non-destructive testing of the surface of plate heat exchanger plates according to claim 1, characterized in that, A fixing seat is inserted into the top of the inner wall of the slide, and the fixing seat is fixedly connected to the support frame by screws.

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