Heater airtightness test fixture

Abstract

The utility model belongs to the technical field of airtightness test fixtures, and discloses a heater airtightness test fixture, which comprises a test machine body for testing the airtightness of a heater, a positioning piece is arranged at the top of the test machine body, and a clamping cavity for clamping the heater is formed on the positioning piece. The positioning piece comprises a bottom plate and a top plate which move up and down relatively, the bottom plate is located below the top plate, the clamping cavity is formed between the bottom plate and the top plate, and the top of the bottom plate sinks inwards to form a positioning groove matched with the heater. The air tightness test can be carried out only by placing the heater between the top plate and the bottom plate, moving the top plate and the bottom plate relatively and then abutting against the heater for fixation, personnel do not need to manually test the heater, the operation is simple and convenient, the efficiency is high, and the influence of human factors on the detection accuracy is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of airtight test fixtures, and in particular relates to an airtight test fixture for a heater. Background Art

[0002] In the existing heater production process, air tightness testing is an important step to ensure the quality of the heater. However, the traditional air tightness test method requires personnel to manually connect the gas charging and discharging equipment to the heater to be tested before testing. Therefore, the existing method is complicated to operate, inefficient, and the detection accuracy is greatly affected by human factors. Therefore, a heater air tightness test fixture is proposed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a heater airtightness test fixture to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heater airtight test fixture, comprising a test machine body for testing the airtightness of the heater, a positioning piece is arranged on the top of the test machine body, a clamping cavity for clamping the heater is formed on the positioning piece, and the positioning piece comprises a bottom plate and a top plate which move up and down relatively, the bottom plate is located below the top plate, and the clamping cavity is formed between the bottom plate and the top plate, and the top of the bottom plate is recessed to form a positioning groove matching the heater.

[0005] Preferably, a bracket is fixedly connected to the top of the testing machine body, a downward pressure cylinder is fixedly connected to one side of the bracket, a pressing plate is connected to the telescopic end of the downward pressure cylinder, and the bottom of the pressing plate is fixedly connected to the top of the top plate;

[0006] A sealing cylinder is fixedly connected to one side of the testing machine body, the sealing cylinder is on one side of the bracket, and the telescopic end of the sealing cylinder is connected to a side plate, and a plug for sealing the heater is provided on the side of the side plate away from the sealing cylinder, and the plug is provided with an air inlet and an air outlet for conveying gas, and the air inlet and the air outlet are connected.

[0007] Preferably, a plurality of positioning rods are fixedly connected to the bottom of the top plate, the heater is located between the plurality of positioning rods, a plurality of positioning holes matching the positioning rods are opened on the bottom plate, and the positioning groove is located between the plurality of positioning holes.

[0008] Preferably, two switch keys are arranged on one side of the test machine body, and a touch screen and an emergency stop button are also arranged on one side of the test machine body, the touch screen and the emergency stop button are located between the two switch keys, and the touch screen is located between the switch key and the emergency stop button.

[0009] Preferably, both sides of the testing machine body adjacent to the touch screen are fixedly connected with handles, and the handles are provided with handle grooves.

[0010] Preferably, a sealing ring is provided on the side of the plug facing the air outlet.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model provides a bottom plate and a top plate that can move up and down. When a person performs an air tightness test on a heater, the person only needs to place the heater between the top plate and the bottom plate. The top plate and the bottom plate can be moved relative to each other and then the heater can be fixed to perform an air tightness test. The person does not need to test the heater manually. The operation is simple and efficient, and the detection accuracy is less affected by human factors.

[0013] (2) On the basis of the above beneficial effects, when the bottom plate and the top plate contact the heater, the positioning groove cooperates to make the device more secure when contacting the heater, further improving the stability of the device when detecting the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0015] Figure 2 This is the second stereogram of the utility model;

[0016] Figure 3 This is one of the three-dimensional diagrams of the positioning member of the utility model;

[0017] Figure 4 This is the second stereoscopic diagram of the positioning member of the utility model;

[0018] Figure 5 This is the third stereogram of the positioning member of the utility model;

[0019] Figure 6 It is a three-dimensional diagram of the plug of the utility model;

[0020] In the figure: 1. On / off switch; 2. Test machine body; 3. Positioning piece; 31. Top plate; 32. Positioning rod; 33. Plug; 34. Bottom plate; 35. Positioning hole; 36. Positioning slot; 37. Air inlet; 38. Air outlet; 4. Touch screen; 5. Press cylinder; 6. Bracket; 7. Press plate; 8. Handle; 9. Handle slot; 10. Emergency stop button; 11. Sealing cylinder; 12. Side panel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 6 As shown in the figure, the utility model provides the following technical solutions: a heater airtight test fixture, including a test machine body 2 for testing the airtightness of the heater, a positioning piece 3 is arranged on the top of the test machine body 2, a clamping cavity for clamping the heater is formed on the positioning piece 3, and the positioning piece 3 includes a bottom plate 34 and a top plate 31 which move up and down relatively, the bottom plate 34 is below the top plate 31, and the clamping cavity is formed between the bottom plate 34 and the top plate 31, and the top of the bottom plate 34 is recessed to form a positioning groove 36 matching the heater.

[0023] Through the above technical solution, when personnel need to test the air tightness of the heater, the heater is placed between the bottom plate 34 and the top plate 31, and the bottom plate 34 and the top plate 31 are moved relative to each other until the bottom plate 34 and the top plate 31 clamp and fix the heater, and the positioning groove 36 cooperates to make the device clamp the heater more tightly. When the heater is fixed, the air tightness of the heater is tested through the test machine body 2.

[0024] Specifically, in one embodiment, regarding how the bottom plate 34 and the top plate 31 are moved, Figure 1-Figure 2 As shown:

[0025] A bracket 6 is fixedly connected to the top of the testing machine body 2, a downward pressure cylinder 5 is fixedly connected to one side of the bracket 6, a pressing plate 7 is connected to the telescopic end of the downward pressure cylinder 5, and the bottom of the pressing plate 7 is fixedly connected to the top of the top plate 31;

[0026] A sealing cylinder 11 is fixedly connected to one side of the testing machine body 2, and the sealing cylinder 11 is located on one side of the bracket 6. The telescopic end of the sealing cylinder 11 is connected to a side plate 12. A plug 33 for sealing the heater is provided on the side of the side plate 12 away from the sealing cylinder 11. The plug 33 is provided with an air inlet 37 and an air outlet 38 for conveying gas, and the air inlet 37 and the air outlet 38 are connected.

[0027] In this embodiment, before placing the heater, the downward pressing cylinder 5 is operated, and then the downward pressing cylinder 5 drives the pressure plate 7 to move, and then the pressure plate 7 drives the top plate 31 to move, so that the top plate 31 is separated from the bottom plate 34, and the heater to be tested is placed on the bottom plate 34, and the heater is positioned through the positioning groove 36. After the heater is placed, the downward pressing cylinder 5 is operated, and then the downward pressing cylinder 5 drives the pressure plate 7 to move, and then the pressure plate 7 drives the top plate 31 to move, until the top plate 31 and the bottom plate 34 are against the heater to be tested, and the sealing cylinder 11 is moved, so that the sealing cylinder 11 drives the plug 33 to move until the plug 33 blocks one side of the heater, and gas is input through the air inlet 37 and the air outlet 38, so that the gas is delivered to the heater, and then the heater is tested for air tightness.

[0028] In order to facilitate the alignment of the top plate 31 with the bottom plate 34 when moving, as shown in FIG. Figure 3-Figure 5 As shown, a plurality of positioning rods 32 are fixedly connected to the bottom of the top plate 31 , the heater is located between the plurality of positioning rods 32 , a plurality of positioning holes 35 matching the positioning rods 32 are opened on the bottom plate 34 , and the positioning grooves 36 are located between the plurality of positioning holes 35 .

[0029] In this embodiment,

[0030] In addition, in the present utility model, if Figure 1-Figure 2 As shown, two switch keys 1 are arranged on one side of the test machine body 2, and a touch screen 4 and an emergency stop button 10 are also arranged on one side of the test machine body 2. The touch screen 4 and the emergency stop button 10 are located between the two switch keys 1, and the touch screen 4 is located between the switch key 1 and the emergency stop button 10.

[0031] In order to facilitate the movement of the test machine body 2, as Figure 1-Figure 2 As shown, handles 8 are fixedly connected to both sides of the testing machine body 2 adjacent to the touch screen 4 , and handle grooves 9 are formed on the handles 8 .

[0032] In this embodiment, when a person needs to move the test machine body 2 , the test machine body 2 can be easily moved by the handle 8 and the handle slot 9 .

[0033] When the plug 33 seals the heater, in order to make the airtightness between the plug 33 and the heater better, as shown in FIG. Figure 4-Figure 6 As shown, a sealing ring is provided on the side of the plug 33 facing the air outlet 38 .

[0034] In this embodiment, when the plug 33 blocks the heater, the sealing ring increases the sealing performance between the plug 33 and the heater.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heater airtightness test fixture, characterized in that: The invention comprises a testing machine body (2) for testing the air tightness of a heater, wherein a positioning member (3) is arranged on the top of the testing machine body (2), a clamping cavity for clamping the heater is formed on the positioning member (3), and the positioning member (3) comprises a bottom plate (34) and a top plate (31) which move up and down relatively, the bottom plate (34) is located below the top plate (31), the clamping cavity is formed between the bottom plate (34) and the top plate (31), and the top of the bottom plate (34) is recessed to form a positioning groove (36) matching the heater; The top of the testing machine body (2) is fixedly connected to a bracket (6), one side of the bracket (6) is fixedly connected to a downward pressure cylinder (5), the telescopic end of the downward pressure cylinder (5) is connected to a pressing plate (7), and the bottom of the pressing plate (7) is fixedly connected to the top of the top plate (31); A blocking cylinder (11) is fixedly connected to one side of the test machine body (2); the blocking cylinder (11) is located on one side of the bracket (6); and a telescopic end of the blocking cylinder (11) is connected to a side plate (12); a plug (33) for blocking the heater is provided on a side of the side plate (12) away from the blocking cylinder (11); an air inlet (37) and an air outlet (38) for conveying gas are provided on the plug (33); and the air inlet (37) and the air outlet (38) are communicated with each other.

2. The heater airtightness test fixture according to claim 1, characterized in that: A plurality of positioning rods (32) are fixedly connected to the bottom of the top plate (31), the heater is located between the plurality of positioning rods (32), a plurality of positioning holes (35) matching the positioning rods (32) are formed on the bottom plate (34), and the positioning grooves (36) are located between the plurality of positioning holes (35).

3. The heater airtightness test fixture according to claim 1, characterized in that: Two switch keys (1) are arranged on one side of the test machine body (2), and a touch screen (4) and an emergency stop button (10) are also arranged on one side of the test machine body (2), the touch screen (4) and the emergency stop button (10) being located between the two switch keys (1), and the touch screen (4) being located between the switch key (1) and the emergency stop button (10).

4. The heater airtightness test fixture according to claim 3, characterized in that: Handles (8) are fixedly connected to both sides of the test machine body (2) adjacent to the touch screen (4), and handle grooves (9) are provided on the handles (8).

5. The heater airtightness test fixture according to claim 1, characterized in that: A sealing ring is provided on one side of the plug (33) facing the air outlet (38).

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