A device for testing the adhesion

Abstract

The utility model relates to a finned tube testing technical field especially to a kind of adhesion testing device, including first friction piece, butt joint structure, clamping structure. Through first friction piece, butt joint structure, clamping structure, device uses, first in the finned tube bundle position to be measured insertion first friction piece, make inner groove cover single group fin, second in the finned tube bundle position to be measured insertion second friction piece and third friction piece, first friction piece and second friction piece, third friction piece have embedded groove to guarantee tightness, secondly, into clamping plate, and using second fastening component, third fastening component fixed, make first friction piece, second friction piece, third friction piece tightly adhere to fin, so as to carry out torsion transmission, measure by pulling torsion output rod, due to the hinging of hinged seat, the down pull movement of torsion output rod can make clamping plate drive first friction piece and second friction piece, third friction piece do rotary work.

Description

Technical Field

[0001] This utility model relates to the field of finned tube testing technology, specifically to an adhesion force testing device. Background Technology

[0002] Finned tubes are widely used in heat exchangers, and they come in various forms, such as rolled finned tubes, embedded finned tubes, wound finned tubes, and integral finned tubes. The base tube of a finned tube can be made of almost any material, while the fin material varies: for rolled finned tubes, the fin material must be a ductile material such as aluminum or copper; for the other types of finned tubes, there are no restrictions on the fin material.

[0003] Currently, the adhesion force between the fins and the base tube of a finned tube cannot be directly measured. Instead, two methods are generally used: one is to measure the contact thermal resistance, i.e., to determine the adhesion force by testing the thermal conductivity of the finned tube; the other is to observe the contact between the fins and the base tube through microscopic magnification after sectioning. Both methods have significant drawbacks: thermal conductivity testing involves longer processing time and higher costs, and is not applicable to products from different batches; microscopic assessment relies more on rough visual judgment, is subjective, and cannot be specifically quantified. Based on the limitations of existing technology, this invention designs an adhesion force testing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an adhesion force testing device that directly measures the adhesion force of fins, and offers advantages such as simple measurement and quantification.

[0005] This utility model provides the following technical solution: an adhesion force testing device, comprising a first friction plate, a docking structure, and a clamping structure, characterized in that: the first friction plate has an inner groove inside; the docking structure includes a second friction plate and a third friction plate; the clamping structure includes a clamping plate; a torque output pivot is fixedly installed inside the clamping plate; a hinge seat is hingedly installed on the outer surface of the torque output pivot; and a torque output rod is fixedly installed at the bottom of the hinge seat.

[0006] As a preferred technical solution of this utility model, a first fastening component is fixedly installed on both sides of the outer surface of the first friction plate, and the inner groove is provided with a groove that is compatible with the second friction plate and the third friction plate.

[0007] As a preferred technical solution of this utility model, the first friction plate has a first fixing groove on both sides inside for connecting with the clamping plate.

[0008] As a preferred embodiment of the present invention, the second friction plate and the third friction plate are provided with a second fixing groove for connecting with the clamping plate.

[0009] As a preferred technical solution of this utility model, the inner sides of the clamping plate are fixed with second fastening components by bolts, and the two second fastening components can be fixedly connected to the first fixing groove.

[0010] As a preferred technical solution of this utility model, the clamping plate is internally fixed with a third fastening component by bolts, and the third fastening component can be fixedly connected to the second friction plate and the third friction plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This bonding force testing device comprises a first friction plate, a docking structure, and a clamping structure. In use, the first friction plate is inserted at the measurement location on the finned tube bundle, covering a single set of fins with its inner groove. Next, a second and third friction plate are inserted at the measurement location. The first, second, and third friction plates have embedded grooves to ensure tightness. A clamping plate is then installed and fixed with a second and third fastening assembly, ensuring the first, second, and third friction plates are tightly attached to the fins for torque transmission. During measurement, pulling the torque output rod causes the clamping plate to rotate due to the hinged joint. The tension force at the moment the fins begin to rotate can be measured and converted into bonding force, thus achieving direct measurement of the fin bonding force. This method is simple and quantifiable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a schematic diagram of the single-fin structure of this utility model; Figure 3 This is a schematic diagram of the structure of the first friction plate of this utility model; Figure 4 This is a schematic diagram of the docking and clamping structure of this utility model.

[0013] In the figure: 1. First friction plate; 101. Inner groove; 102. First fixing groove; 103. First fastening assembly; 2. Connecting structure; 21. Second friction plate; 22. Third friction plate; 23. Second fixing groove; 3. Clamping structure; 31. Clamping plate; 32. Second fastening assembly; 33. Third fastening assembly; 34. Torque output pivot; 35. Hinge seat; 36. Torque output rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4 A bonding force testing device includes a first friction plate 1, a docking structure 2, and a clamping structure 3. The first friction plate 1 has an inner groove 101 inside. The docking structure 2 includes a second friction plate 21 and a third friction plate 22. The clamping structure 3 includes a clamping plate 31. A torque output pivot 34 is fixedly installed inside the clamping plate 31. A hinge seat 35 is hingedly installed on the outer surface of the torque output pivot 34. A torque output rod 36 is fixedly installed at the bottom of the hinge seat 35.

[0016] Please see Figures 3-4 The first fastening assembly 103 is fixedly installed on both sides of the outer surface of the first friction plate 1, and the inner groove 101 is provided with a groove that is compatible with the second friction plate 21 and the third friction plate 22.

[0017] The embedded grooves provided by the inner groove 101, the second friction plate 21, and the third friction plate 22 can ensure the tightness of the connection between the three.

[0018] Please see Figures 3-4 The first friction plate 1 has first fixing grooves 102 on both sides of its interior for connecting with the clamping plate 31. The second friction plate 21 and the third friction plate 22 have second fixing grooves 23 on their interiors for connecting with the clamping plate 31. The clamping plate 31 has second fastening components 32 fixed to both sides of its interior by bolts, and the two second fastening components 32 can be fixedly connected to the first fixing grooves 102. The clamping plate 31 has a third fastening component 33 fixed to its interior by bolts, and the third fastening component 33 can be fixedly connected to the second friction plate 21 and the third friction plate 22.

[0019] During measurement, by pulling the torque output rod 36, due to the hinge of the hinge seat 35, the downward movement of the torque output rod 36 can cause the clamping plate 31 to drive the first friction plate 1, the second friction plate 21, and the third friction plate 22 to rotate. At this time, the tension of the fin when it just rotates can be measured and converted into the adhesion force.

[0020] Working principle: When a bonding force testing device is used, firstly, the first friction plate 1 is inserted at the measurement position of the finned tube bundle, so that the inner groove 101 covers a single set of fins. Secondly, the second friction plate 21 and the third friction plate 22 are inserted at the measurement position of the finned tube bundle. The first friction plate 1, the second friction plate 21, and the third friction plate 22 have embedded grooves to ensure tightness. Next, the clamping plate 31 is installed and fixed with the second fastening component 32 and the third fastening component 33, so that the first friction plate 1, the second friction plate 21, and the third friction plate 22 are tightly attached to the fins to facilitate torque transmission. During measurement, by pulling the torque output rod 36, due to the hinge of the hinge seat 35, the downward movement of the torque output rod 36 can cause the clamping plate 31 to drive the first friction plate 1, the second friction plate 21, and the third friction plate 22 to rotate. At this time, the tension when the fin just rotates can be measured and converted into bonding force.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bonding force testing device, comprising a first friction plate (1), a mating structure (2), and a clamping structure (3), characterized in that: The first friction plate (1) has an inner groove (101) inside. The docking structure (2) includes a second friction plate (21) and a third friction plate (22). The clamping structure (3) includes a clamping plate (31). A torque output pivot (34) is fixedly installed inside the clamping plate (31). A hinge seat (35) is hingedly installed on the outer surface of the torque output pivot (34). A torque output rod (36) is fixedly installed at the bottom of the hinge seat (35).

2. The adhesion force testing device according to claim 1, characterized in that: The first fastening assembly (103) is fixedly installed on both sides of the outer surface of the first friction plate (1), and the inner groove (101) is provided with a groove that is compatible with the second friction plate (21) and the third friction plate (22).

3. The adhesion force testing device according to claim 1, characterized in that: The first friction plate (1) has a first fixing groove (102) on both sides inside for connecting with the clamping plate (31).

4. The adhesion force testing device according to claim 1, characterized in that: The second friction plate (21) and the third friction plate (22) have a second fixing groove (23) for connecting with the clamping plate (31).

5. The adhesion force testing device according to claim 1, characterized in that: The clamping plate (31) has two internal fastening components (32) fixed to its inner sides by bolts. The two second fastening components (32) can be fixedly connected to the first fixing groove (102).

6. The adhesion force testing device according to claim 5, characterized in that: The clamping plate (31) is internally fixed with a third fastening assembly (33) by bolts. The third fastening assembly (33) can be fixedly connected to the second friction plate (21) and the third friction plate (22).

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