Air tightness testing device for high-pressure heating element of coiled pipe

Abstract

The invention relates to the technical field of air tightness testing, and particularly discloses a serpentine pipe high-pressure heating element air tightness testing device which comprises a base and a testing box, the testing box is connected to the base, the base is used for fixing the testing box, the testing box is used for testing the air tightness of a heating element, a testing assembly is connected into the testing box and arranged on one side of the heating element, and the testing assembly is used for testing the air tightness of the heating element. The testing assembly is used for testing the helium amount and further detecting whether the heating piece leaks or not by monitoring the change of the helium amount in the testing box and the change of the air pressure in the heating piece, and the adjusting assembly is arranged in the testing box, connected with the air conveying opening and used for adjusting the position of the heating piece. When the testing assembly monitors that the air pressure changes, the adjusting assembly is started and adjusts the distance between the heating piece and the conveying opening, and the situation that due to the fact that the conveying pipeline is too long, air is retained in the pipeline, the internal pressure of the heating piece is affected, and errors of the detection result occur is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness testing, in particular to an air tightness testing device for a serpentine tube high-pressure heating element. Background Art

[0002] The serpentine tube high-pressure heating element is mainly composed of a serpentine tube, a header, a shell, a head and other parts. The design of the serpentine tube not only increases the flow path length of the fluid, but also improves the heat exchange efficiency. The serpentine tube and the header are connected by welding to ensure good sealing performance. In order to ensure the sealing of the serpentine tube high-pressure heating element and ensure normal use, it is necessary to use an airtightness tester to test its sealing.

[0003] The airtightness test is used to detect the sealing performance of sealed containers, systems or building envelope structures. It determines whether there is a leak by applying gas pressure and monitoring pressure changes or gas flow. The airtightness test can detect the airtightness of serpentine heat exchange tubes. Ensuring the efficiency of heat energy transfer requires ensuring the airtightness of serpentine heat exchange tubes.

[0004] The airtightness test can ensure that the serpentine heat exchange tube is leak-free and ensure efficient and stable transfer of heat energy. The airtightness test of the serpentine tube high-pressure heating element can inject helium into the heating device and use a detector to scan the outside. If helium leakage is found, it means that there is an airtightness problem. However, when performing airtightness test on the heating element, a too long gas transmission pipeline may cause gas to be trapped in the pipeline, which in turn causes unstable pressure inside the heating element and affects the test results. For this reason, we propose an airtightness test device for serpentine tube high-pressure heating elements. Summary of the invention

[0005] The purpose of the present invention is to provide a serpentine tube high-pressure heating element air tightness testing device to solve the above-mentioned problem that when performing air tightness testing on the heating element, the gas transmission pipeline is too long, which may cause gas to be retained in the pipeline, thereby causing unstable internal pressure of the heating element and affecting the test results.

[0006] To achieve the above object, the present invention provides the following technical solutions: a serpentine tube high-pressure heating element air tightness test device, comprising: a base and a test box, the test box is connected to the base, the base is used to fix the test box, the test box is used to test the air tightness of the heating element, a gas delivery port is opened at one end of the test box, a gas delivery component is connected to the gas delivery port, the gas delivery component delivers helium to the heating element through the gas delivery port, and the heating element is arranged in the test box; Also includes: A test assembly, which is connected in the test box and arranged on one side of the heating element, and is used to test the amount of helium and further detect whether the heating element is leaking; An adjusting component is arranged in the test box and connected to the gas outlet, and is used to adjust the position of the heating element; The mobile component is arranged in the test box and is connected to the heating element. The mobile component can fix heating elements of different sizes and is used to fix the heating element.

[0007] Among them, the test component includes a fixing plate 1, which is connected in the test box. A helium detector is connected to the fixing plate 1, which is used to monitor the amount of helium. A pressure monitor is connected to the heating element, which is used to monitor the pressure inside the heating element.

[0008] Among them, the adjustment component includes a placement plate, the placement plate is connected to the inner wall of the test box, the placement plate is connected to motor 1, the output shaft of motor 1 is connected to a moving part, the heating part is connected to an input port, the input port is connected to a bellows, and the bellows is connected to the moving part.

[0009] The moving part comprises two moving plates, the two moving plates are connected to the inner wall of the test box, a vertical plate is connected between the two moving plates, and the vertical plate is slidably connected to the moving plates.

[0010] Among them, a driving hole is opened on the vertical plate, a driving tooth is connected to an output shaft of the motor, and the driving tooth is inserted into the driving hole. The driving tooth drives the movable plate to move vertically. A trigger key is connected to the movable plate, and a recovery part is connected to the bottom end of the vertical plate.

[0011] The corrugated pipe is connected with a horizontal plate, the horizontal plate is connected with a sliding plate, and the sliding plate is connected to the inner wall of the test box. The horizontal plate is slidably connected with the sliding plate, and the horizontal plate is clamped with the vertical plate.

[0012] The recovery member comprises a rectangular plate, which is connected to the inner wall of the test box, a spring is connected to the rectangular plate, and the spring is connected to the vertical plate.

[0013] Among them, the moving component includes a placement slot, which is opened in the test box, and a driving component is connected to the placement slot. The driving component includes motor 2, which is connected in the placement slot. A bidirectional screw rod is connected to the output shaft of motor 2, and two moving blocks are connected to the bidirectional screw rod, and both moving blocks are connected to fixed components.

[0014] Among them, the fixing part includes a second fixing plate, which is arranged on the top of the moving block. The second fixing plate is provided with a groove, and an electric telescopic shaft is connected in the groove. The electric telescopic shaft is used to fix the heating part.

[0015] Among them, the moving block is connected with a fixed plate three, and a telescopic rod is connected between the fixed plate three and the fixed plate two.

[0016] The present invention has at least the following beneficial effects: by setting a test component and an adjustment component, the test component is connected in a test box, and the test component is arranged on one side of the heater, the test component is used to test the amount of helium, and by monitoring the change of the amount of helium in the test box and the change of the air pressure in the heater, whether the heater is leaking is detected, the adjustment component is arranged in the test box, and the adjustment component is connected to the gas transmission port, the adjustment component is used to adjust the position of the heater, and then when the test component monitors the change of the air pressure, the adjustment component is started, and the adjustment component adjusts the distance between the heater and the transmission port to prevent the transmission pipeline from being too long, causing the gas to be trapped in the pipeline, thereby affecting the internal pressure of the heater and causing errors in the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the test box of the present invention; Figure 3 It is a schematic diagram of the structure of the heating element of the present invention; Figure 4 It is a schematic diagram of the structure of the test assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the regulating component of the present invention; Figure 6 It is a schematic diagram of the structure of the moving part of the present invention; Figure 7 It is a schematic diagram of the structure of the recovery member of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the middle A area; Fig. 9 This is a schematic diagram of the structure of the mobile assembly of the present invention; Fig.10 It is a schematic diagram of the structure of the fixing member of the present invention.

[0018] In the figure: 1. test box; 2. base; 3. gas delivery part; 4. gas delivery port; 5. heating part; 6. test assembly; 61. fixed plate 1; 62. helium detector; 7. pressure monitor; 8. adjustment assembly; 81. moving part; 82. recovery part; 9. moving assembly; 91. placement slot; 10. driving part; 11. motor 2; 12. two-way screw rod; 13. moving block; 14. fixed plate 3; 15. fixed plate 2; 16. telescopic rod; 17. opening; 18. bellows; 19. connecting sleeve; 20. groove; 21. electric telescopic shaft; 22. placement plate; 23. motor 1; 24. driving tooth; 25. moving plate; 26. horizontal plate; 27. sliding plate; 28. vertical plate; 29. ​​driving hole; 30. rectangular plate; 31. spring; 32. trigger key. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1 See also Figures 1 to 10 The present invention provides a technical solution: a serpentine tube high-pressure heating element air tightness test device, comprising: a base 2 and a test box 1, the test box 1 is connected to the base 2, the base 2 is used to fix the test box 1, the test box 1 is used to test the air tightness of the heating element 5, a gas delivery port 4 is opened at one end of the test box 1, a gas delivery part 3 is connected to the gas delivery port 4, the gas delivery part 3 delivers helium to the heating element 5 through the gas delivery port 4, the heating element 5 is arranged in the test box 1, the heating element 5 is placed in the test box 1, the helium is delivered to the heating element 5 through the gas delivery port 4, and then the heating element 5 is observed whether there is leakage; Also includes: A test assembly 6, which is connected to the test box 1 and is disposed on one side of the heater 5. The test assembly 6 is used to test the amount of helium, and to detect whether the heater 5 is leaking by monitoring the change of the amount of helium in the test box 1 and the change of the air pressure in the heater 5; The regulating component 8 is arranged in the test box 1 and connected to the gas delivery port 4. The regulating component 8 is used to adjust the position of the heating element 5. When the test component 6 detects a change in the air pressure, the regulating component 8 is started to adjust the distance between the heating element 5 and the delivery port to prevent the transmission pipeline from being too long and causing gas to be retained in the pipeline, thereby affecting the internal pressure of the heating element 5 and causing errors in the test results. The movable component 9 is arranged in the test box 1, and the movable component 9 is connected to the heating element 5. The movable component 9 can fix the heating elements 5 of different sizes. The movable component 9 is used to fix the heating element 5. By setting the movable component 9, it can be adjusted according to the size of the heating element 5, and then the heating elements 5 of different sizes can be fixed.

[0021] The test assembly 6 includes a fixing plate 61, which is connected to the test box 1. A helium detector 62 is connected to the fixing plate 61, and the helium detector 62 is used to monitor the amount of helium. A pressure monitor 7 is connected to the heating element 5, and the pressure monitor 7 is used to monitor the pressure inside the heating element 5. The helium detector 62 can be fixed by setting the fixing plate. The helium detector 62 and the pressure monitor 7 can be used together to detect whether the heating element 5 is leaking. When the pressure monitor 7 detects that the pressure in the heating element 5 drops, the helium detector 62 is started. If the helium detector 62 does not detect helium, the adjustment assembly 8 is started. If the helium detector 62 detects the presence of helium, an alarm is issued to remind the staff.

[0022] The adjusting component 8 includes a placing plate 22, which is connected to the inner wall of the test box 1, and a motor 23 is connected to the placing plate 22. A moving part 81 is connected to the output shaft of the motor 23, and an input port is connected to the heating element 5. The input port is connected to a bellows 18, and the bellows 18 is connected to the moving part 81. The motor 23 can be fixed by setting the placing plate 22. If the helium detector 62 does not detect helium, the motor 23 is started, and the motor 23 drives the moving part 81 to move vertically, thereby adjusting the distance between the heating element 5 and the input port, thereby preventing the transmission pipeline from being too long, causing gas to be trapped in the pipeline, and affecting the internal pressure of the heating element 5.

[0023] The moving member 81 includes two moving plates 25, which are connected to the inner wall of the test box 1. A vertical plate 28 is connected between the two moving plates 25, and the vertical plate 28 is slidably connected to the moving plate 25. The vertical plate 28 can be fixed by the moving plate 25, and then the vertical plate 28 can move vertically on the moving plate 25 to adjust the distance between the heating element 5 and the input port.

[0024] A driving hole 29 is provided on the vertical plate 28, and a driving tooth 24 is connected to the output shaft of the motor 23, and the driving tooth 24 is inserted into the driving hole 29, and the driving tooth 24 drives the movable plate 25 to move vertically, and the movable plate 25 is connected with a trigger key 32. If the helium detector 62 does not detect helium, the motor 23 is started, and the motor 23 drives the driving tooth 24 to rotate, and the driving tooth 24 is inserted into the driving hole 29. The rotation of the driving tooth 24 can drive the vertical plate 28 to move vertically. When the movable plate 25 moves vertically and touches the trigger key 32, the helium detector 62 is started again to detect whether the heating element 5 is leaking. A recovery component 82 is connected to the bottom end of the vertical plate 28. If the helium detector 62 does not detect helium, the recovery component 82 can restore the vertical plate 28 to its original position.

[0025] A transverse plate 26 is connected to the bellows 18, and an opening 17 is provided on the heating element 5. When the air tightness test of the heating element 5 is required, the bellows 18 is connected to the heating element 5, and a sliding plate 27 is connected to the transverse plate 26, and the sliding plate 27 is connected to the inner wall of the test box 1. The transverse plate 26 is slidably connected to the sliding plate 27. The transverse plate 26 can be fixed by setting the sliding plate 27, and then the transverse plate 26 can move vertically on the sliding plate 27, and the transverse plate 26 is engaged with the vertical plate 28. When the vertical plate 28 moves vertically, the vertical plate 28 can drive the transverse plate 26 to move vertically on the sliding plate 27, and then drive the bellows 18 to move vertically, and then the length of the bellows 18 can be adjusted, and the distance between the heating element 5 and the input port can be adjusted, so as to prevent the transmission pipeline from being too long and causing gas to be retained in the pipeline, thereby affecting the internal pressure of the heating element 5 and causing errors in the detection results.

[0026] The recovery member 82 includes a rectangular plate 30, which is connected to the inner wall of the test box 1. A spring 31 is connected to the rectangular plate 30, and the spring 31 is connected to the vertical plate 28. The spring 31 can be fixed by setting the rectangular plate 30. When the vertical plate 28 moves vertically, the vertical plate 28 stretches the spring 31. When the air tightness test of the heating element 5 is completed, the motor 23 is turned off, and the recovery of the spring 31 can drive the vertical plate 28 to return to its original position, and then drive the horizontal plate 26 to recover.

[0027] Embodiment 2 The moving component 9 includes a placement slot 91, which is opened in the test box 1. A driving member 10 is connected to the placement slot 91. The driving member 10 includes a motor 11, which is connected to the placement slot 91. A bidirectional screw rod 12 is connected to the output shaft of the motor 11. Two moving blocks 13 are connected to the bidirectional screw rod 12, and both moving blocks 13 are connected to fixing members. By setting the placement slot 91, the motor 11 can be fixed to protect the motor 11, thereby extending the service life of the motor 11. When the heating element 5 is placed in the test box 1, the motor 11 is started, and the motor 11 drives the bidirectional screw rod 12 to rotate. The rotation of the bidirectional screw rod 12 can drive the two moving blocks 13 to move, and then the distance between the two moving blocks 13 can be adjusted according to the length of the heating element 5. The movement of the two moving blocks 13 can drive the fixing member to move, and the heating element 5 can be fixed by the fixing member.

[0028] The fixing part includes a fixing plate 15, which is arranged at the top of the moving block 13. A groove 20 is opened on the fixing plate 15, and an electric telescopic shaft 21 is connected in the groove 20. The electric telescopic shaft 21 is used to fix the heating element 5. The heating element 5 is connected with a connecting sleeve 19. The electric telescopic shaft 21 can be fixed by being arranged in the groove 20. When the heating element 5 needs to be fixed, the electric telescopic shaft 21 is started, and the electric telescopic shaft 21 passes through the connecting sleeve 19, so that the electric telescopic shaft 21 fixes the heating element 5, thereby ensuring the stability of the heating element 5.

[0029] The moving block 13 is connected to a fixed plate three 14, and a telescopic rod 16 is connected between the fixed plate three 14 and the fixed plate two 15. The telescopic rod 16 can be fixed by setting the fixed plate two 15 and the fixed plate three 14. When the horizontal plate 26 adjusts the bellows 18, the telescopic rod 16 is set, and the heating element 5 can move vertically with the expansion and contraction of the bellows 18, thereby adjusting the distance between the heating element 5 and the input port, thereby ensuring the accuracy of the test results.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] 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 serpentine tube high pressure heating element air tightness test device, comprising: A base (2) and a test box (1), wherein the test box (1) is connected to the base (2), the base (2) is used to fix the test box (1), the test box (1) is used to test the air tightness of a heating element (5), one end of the test box (1) is provided with a gas delivery port (4), the gas delivery port (4) is connected to a gas delivery member (3), the gas delivery member (3) delivers helium to the heating element (5) through the gas delivery port (4), and the heating element (5) is arranged in the test box (1); It is characterized by: also including: A test assembly (6), the test assembly (6) being connected to the test box (1), and the test assembly (6) being arranged on one side of the heating element (5), the test assembly (6) being used to test the amount of helium, and thereby detect whether the heating element (5) is leaking; An adjusting component (8), the adjusting component (8) being arranged in the test box (1), the adjusting component (8) being connected to the gas delivery port (4), and the adjusting component (8) being used to adjust the position of the heating element (5); A moving component (9), the moving component (9) being arranged in the test box (1), and the moving component (9) being connected to the heating element (5), the moving component (9) being capable of fixing heating elements (5) of different sizes, and the moving component (9) being used to fix the heating element (5).

2. The air tightness testing device for the serpentine tube high pressure heating element according to claim 1 is characterized in that: The test assembly (6) comprises a fixing plate (61) connected to the inside of the test box (1); a helium detector (62) is connected to the fixing plate (61); the helium detector (62) is used to monitor the amount of helium; and a pressure monitor (7) is connected to the heating element (5); the pressure monitor (7) is used to monitor the pressure inside the heating element (5).

3. The air tightness testing device for the serpentine tube high pressure heating element according to claim 1 is characterized in that: The adjustment component (8) comprises a placement plate (22), the placement plate (22) being connected to the inner wall of the test box (1), the placement plate (22) being connected to a motor 1 (23), the output shaft of the motor 1 (23) being connected to a moving member (81), the heating member (5) being connected to an input port, the input port being connected to a bellows (18), and the bellows (18) being connected to the moving member (81).

4. The air tightness testing device for the serpentine tube high pressure heating element according to claim 3 is characterized in that: The moving member (81) comprises two moving plates (25), the two moving plates (25) being connected to the inner wall of the test box (1), a vertical plate (28) being connected between the two moving plates (25), and the vertical plate (28) being slidably connected to the moving plates (25).

5. The air tightness testing device for the serpentine tube high pressure heating element according to claim 4, characterized in that: The vertical plate (28) is provided with a driving hole (29), the output shaft of the motor 1 (23) is connected with a driving tooth (24), and the driving tooth (24) is inserted into the driving hole (29), the driving tooth (24) drives the movable plate (25) to move vertically, the movable plate (25) is connected with a trigger key (32), and the bottom end of the vertical plate (28) is connected with a recovery member (82).

6. The air tightness testing device for the serpentine tube high pressure heating element according to claim 5, characterized in that: The bellows (18) is connected to a transverse plate (26), the transverse plate (26) is connected to a sliding plate (27), and the sliding plate (27) is connected to the inner wall of the test box (1), the transverse plate (26) and the sliding plate (27) are slidably connected, and the transverse plate (26) and the vertical plate (28) are snap-fitted.

7. The air tightness testing device for the serpentine tube high pressure heating element according to claim 5, characterized in that: The recovery member (82) comprises a rectangular plate (30), the rectangular plate (30) being connected to the inner wall of the test box (1), a spring (31) being connected to the rectangular plate (30), and the spring (31) being connected to the vertical plate (28).

8. The air tightness testing device for the serpentine tube high pressure heating element according to claim 1, characterized in that: The moving assembly (9) comprises a placement slot (91), the placement slot (91) being arranged in the test box (1), a driving member (10) being connected in the placement slot (91), the driving member (10) comprising a second motor (11), the second motor (11) being connected in the placement slot (91), a bidirectional screw rod (12) being connected to the output shaft of the second motor (11), two moving blocks (13) being connected to the bidirectional screw rod (12), and both of the two moving blocks (13) being connected to a fixing member.

9. The air tightness testing device for the serpentine tube high pressure heating element according to claim 8, characterized in that: The fixing member comprises a second fixing plate (15), the second fixing plate (15) being arranged at the top of the moving block (13), the second fixing plate (15) being provided with a groove (20), the groove (20) being connected with an electric telescopic shaft (21), the electric telescopic shaft (21) being used to fix the heating member (5).

10. The air tightness testing device for the serpentine tube high pressure heating element according to claim 9, characterized in that: The moving block (13) is connected to a third fixing plate (14), and a telescopic rod (16) is connected between the third fixing plate (14) and the second fixing plate (15).

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