CN117073932A - A condenser heat exchange tube leak detection device and its use method - Google Patents

Abstract

The invention discloses a condenser heat exchange tube leak detection device and a method of use thereof. It relates to the field of pipeline leak detection devices and methods of use thereof, and includes a detection mechanism. The detection mechanism includes two sets of detection shells, and two sets of detection shells. A fixing lug is fixedly installed on one side of the shell, a threaded column is fixedly installed on one side of the two groups of detection shells, a set of threaded seats are threadedly connected to the outer walls of the two groups of threaded columns, and one of the two groups of detection shells is fixedly installed. Sealing strips are fixedly installed on both sides, a pressure gauge is fixedly installed on the outer wall of one group of detection shells, and an inflatable bladder is fixedly installed on the outer wall of one group of detection shells. In the present invention, by arranging the second pressure gauge and the second inflatable bladder, it is convenient to detect the air tightness of the comparison tube; by arranging the first pressure gauge and the first inflatable bladder, it is convenient to detect the air tightness of the two sets of detection shells, and it is also convenient to detect the replacement of this section. The heat pipe is airtight and is not easily affected by the temperature environment during the detection process. The device is small in size and easy to operate.

Description

A condenser heat exchange tube leak detection device and its use method

Technical field

The present invention relates to the technical field of pipeline leak detection devices and methods of use thereof, specifically a leak detection device of condenser heat exchange tubes and methods of use thereof.

Background technique

The condenser is an important auxiliary machine of the steam turbine unit of the thermal power plant. Its main task is to condense the steam turbine exhaust steam into water, and to establish and maintain a certain degree of vacuum at the steam turbine exhaust port. The condenser of the power station is a special tube shell. For surface heat exchangers, the condenser cooling tubes have long been mostly built with copper tubes. Leak detection equipment needs to be used to detect the heat exchange tubes before use, and tracer gas detection methods are often used for leak detection.

However, in the existing technology, the use conditions of the tracer gas detection method are harsh, the entire pipeline needs to be inflated, and it needs to be used in an environment with good surrounding air diffusion conditions, otherwise the tracer gas will easily converge and cause false alarms, and the equipment It is large in size and inconvenient to operate. In view of the above problems, a condenser heat exchange tube leak detection device and its use method are proposed.

Contents of the invention

The object of the present invention is to provide a condenser heat exchange tube leakage detection device and a method of use thereof, so as to solve the problem of the harsh use conditions of the tracer gas detection method proposed in the above-mentioned background technology, which requires inflating the entire pipeline and requires surrounding areas. It should be used in an environment with good air diffusion conditions, otherwise the tracer gas will easily converge and cause false alarms, and the equipment will be large and inconvenient to operate.

In order to achieve the above object, the present invention provides the following technical solution: a condenser heat exchange tube leak detection device, including a detection mechanism. The detection mechanism includes two sets of detection shells, and one side of the two sets of detection shells is fixedly installed. There are fixed ears, and the two groups of detection shells are fixedly installed with threaded columns on one side. The outer walls of the two groups of threaded columns are threadedly connected with a set of threaded seats. The two groups of detection shells are fixedly installed with sealing strips on one side. , a pressure gauge is fixedly installed on the outer wall of one group of detection shells, an inflatable bladder is fixedly installed on the outer wall of one group of detection shells, a clamping mechanism is provided on one side of the two groups of detection shells, and the clamping mechanism The mechanism includes a fixed rod. Connecting rods are fixedly installed at both ends of the fixed rod. One end of the two groups of connecting rods is rotatably connected to a clamping rod. A connecting plate is provided between the two groups of clamping rods. A threaded rod is threadedly connected to the interior of the connecting plate, and a hand bolt is fixedly installed at one end of the threaded rod. A comparison mechanism is provided inside the two sets of detection shells, and a fixing mechanism is provided at the top of the two sets of fixing lugs. .

Preferably, the comparison mechanism includes a comparison tube, a sealing cover is fixedly installed on the top of the comparison tube, a pressure gauge two is installed on the top of the sealing cover, and an inflatable bladder is installed on the top of the sealing cover.

Preferably, the outer wall of the comparison tube is in contact with one side of the two sets of sealing strips, one end of the second pressure gauge is arranged inside the contrast tube, and one end of the second inflatable bladder is arranged inside the contrast tube.

Preferably, both groups of the fixing mechanisms include fixed tubes. Limiting rods are provided inside the fixed tubes of both groups. Columns are fixedly installed on the tops of the two groups of limiting rods. One ends of the two groups of cylinders are rotatably connected. There is a flip bolt, and one end of the two sets of limiting rods is fixedly equipped with a spring.

Preferably, the bottoms of the two sets of fixed tubes are fixedly connected to the tops of the two sets of clamping rods, and one ends of the two sets of limiting rods penetrate through the two sets of fixing lugs respectively.

Preferably, the tops of the two sets of cylinders penetrate through the two sets of fixed tubes respectively, the other ends of the two sets of springs are fixedly connected to the inner walls of the two sets of fixed tubes, and one side of the two sets of flip bolts is fixed to the two sets of fixed tubes respectively. The tops of the tubes touch each other.

Preferably, one side of the two groups of threaded posts contacts each other, one side of the two groups of sealing strips contacts each other, and the two ends of the connecting plate are rotationally connected to one side of the two groups of clamping rods respectively.

Preferably, one end of the threaded rod is arranged inside the fixed rod, one end of the two sets of clamping rods is fixedly connected to one end of the two sets of fixed lugs, and one side of the hand bolt is connected to one side of the fixed rod. contact each other.

A method of using a condenser heat exchange tube leak detection device, including the following steps:

S1. Check the tightness of the comparison tube;

S11. Install the sealing cap on one end of the comparison tube and ensure that the value of pressure gauge 2 is the atmospheric pressure value;

S12. Repeatedly pinch the inflated bladder 2 and observe the numerical changes of the pressure gauge 2;

S13. Stop pinching the inflatable bladder 2 and observe whether the value of the pressure gauge 2 is stable at a certain value;

S2. Test the sealing properties of the two sets of detection shells;

S21. Separate the two sets of detection shells and place the comparison tube with good air tightness between the two sets of detection shells;

S22. Rotate the hand bolt to rotate the threaded rod, which drives the connecting plate to move, causing the two sets of connecting rods to rotate, driving the two sets of clamping rods to rotate, so that the two sets of clamping rods drive the two sets of detection shells to move closer to the middle position. One side of the two sets of sealing strips is in close contact with the outer wall of the tube;

S23. One side of the two sets of threaded columns are in contact with each other, and the threaded seat is rotated to fix the two sets of threaded columns together, completing the installation of the two sets of detection shells;

S24. Repeatedly pinch the inflatable bladder 1 and observe the changes in the value of the pressure gauge 1. Stop pinching the inflatable bladder 1 and observe whether the value of the pressure gauge 1 is stable at a certain value to determine whether the air tightness of the two sets of detection shells is good;

S3. Check the air tightness of the heat exchange tube;

S31. Remove the comparison tube;

S32. Place the two sets of detection shells on the outer wall of the heat exchange tube, and repeat the above step S2.

Preferably, in step S21, before the step of separating the two sets of detection shells, the clamping mechanism and the two sets of detection shells are installed, which specifically includes the following steps:

S211. Move the two sets of flip bolts so that the stressed ends of the two sets of flip bolts are in the vertical upward direction. At this time, the two sets of limit rods are in an upward retracted state;

S212. Connect one end of the two sets of clamping rods to one end of the two sets of fixing lugs respectively;

S213. Turn the two sets of flip bolts so that the stressed end of the flip bolts is in the horizontal direction. The two sets of springs extend, causing the two sets of limit rods to move downward and penetrate the two sets of fixed lugs.

Compared with the prior art, the beneficial effects of the present invention are:

1. In the present invention, by arranging the second pressure gauge and the second inflatable bladder, it is convenient to detect the air tightness of the comparison tube. By arranging the first pressure gauge and the first inflatable bladder, it is convenient to detect the air tightness of the two sets of detection shells, and it is convenient to detect the air tightness of the two sets of detection shells. One section of the heat exchange tube is airtight and is not easily affected by the temperature environment during the detection process. The device is small in size and easy to operate.

2. In the present invention, two sets of flip bolts and two sets of springs are provided, and the two groups of flip bolts are flipped so that the stressed end of the flip bolts is in the horizontal direction. The two sets of flip bolts drive the two groups of cylinders to move downward. At this time, the two groups of flip bolts are The spring stretches, causing the two sets of limit rods to move downward and penetrate the two sets of fixing lugs, thus achieving the fixation of the two sets of fixing lugs and the two sets of clamping rods. When the detection shell is damaged, it is convenient for the two sets of detection shells to be connected to the clamps. The disassembly of the holding rods facilitates the replacement of the detection shell.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of a condenser heat exchange tube leak detection device according to the present invention;

Figure 2 is a three-dimensional structural cross-sectional view of a condenser heat exchange tube leak detection device according to the present invention;

Figure 3 is a structural top view of a condenser heat exchange tube leak detection device according to the present invention;

Figure 4 is a schematic three-dimensional structural diagram of a threaded column and a threaded seat of a condenser heat exchange tube leak detection device according to the present invention;

Figure 5 is an exploded view of the three-dimensional structure of the clamping mechanism of a leak detection device for condenser heat exchange tubes according to the present invention;

Figure 6 is an exploded view of the three-dimensional structure of a fixing mechanism of a condenser heat exchange tube leak detection device according to the present invention;

Figure 7 is a structural cross-sectional view of a fixing mechanism of a condenser heat exchange tube leak detection device according to the present invention;

Figure 8 is a flow chart of a method of using a condenser heat exchange tube leak detection device according to the present invention.

In the picture: 1. Detection mechanism; 11. Detection shell; 12. Fixed ear; 13. Threaded column; 14. Threaded seat; 15. Sealing strip; 16. Pressure gauge one; 17. Inflatable bladder one; 2. Clamping mechanism ; 21. Fixed rod; 22. Connecting rod; 23. Clamping rod; 24. Connecting plate; 25. Threaded rod; 26. Hand bolt; 3. Comparison mechanism; 31. Comparison tube; 32. Sealing cover; 33. Pressure gauge two; 34, inflatable bladder two; 4, fixed mechanism; 41, fixed tube; 42, limit rod; 43, cylinder; 44, flip bolt; 45, spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described implementation regulations are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Example 1

Referring to Figures 1-5, a leak detection device for condenser heat exchange tubes includes a detection mechanism 1. The detection mechanism 1 includes two sets of detection shells 11, and fixed ears 12 are fixedly installed on one side of the two sets of detection shells 11. , both sets of detection shells 11 are fixedly installed with threaded posts 13 on one side, and the outer walls of the two sets of threaded posts 13 are threadedly connected to a set of threaded seats 14. Both sets of detection shells 11 are fixedly installed with sealing strips 15 on one side. A pressure gauge 16 is fixedly installed on the outer wall of the detection shell 11. An inflatable bladder 17 is fixedly installed on the outer wall of one group of detection shells 11. A clamping mechanism 2 is provided on one side of the two groups of detection shells 11. The clamping mechanism 2 includes a fixed rod. 21. Connecting rods 22 are fixedly installed at both ends of the fixed rod 21. One end of the two groups of connecting rods 22 is rotatably connected to a clamping rod 23. A connecting plate 24 is provided between the two groups of clamping rods 23. The connecting rods 24 are There is a threaded rod 25 internally threaded, and a hand bolt 26 is fixedly installed at one end of the threaded rod 25. One side of the two groups of threaded columns 13 contacts each other, one side of the two groups of sealing strips 15 contacts each other, and the two ends of the connecting plate 24 are respectively One end of the two sets of clamping rods 23 is rotatably connected to one side of the two sets of clamping rods 23. One end of the threaded rod 25 is arranged inside the fixed rod 21. One end of the two sets of clamping rods 23 is fixedly connected to one end of the two sets of fixing ears 12 respectively. The hand bolt 26 One side of and one side of the fixed rod 21 are in contact with each other;

The two sets of detection shells 11 are provided with a comparison mechanism 3 inside. The comparison mechanism 3 includes a comparison tube 31. A sealing cover 32 is fixedly installed on the top of the comparison tube 31. A pressure gauge 233 is installed through the top of the sealing cover 32. The sealing cover 32 is An inflatable bladder 34 is installed through the top. The outer wall of the contrast tube 31 is in contact with one side of the two sets of sealing strips 15. One end of the pressure gauge 33 is arranged inside the contrast tube 31, and one end of the inflatable bladder 34 is arranged inside the comparison tube. 31 interior.

In this embodiment, first install the sealing cover 32 on one end of the comparison tube 31 to ensure that the value of the pressure gauge 2 33 is the atmospheric pressure value, then repeatedly squeeze the inflatable bladder 34 and observe the change in the value of the pressure gauge 2 33, and then Stop pinching the inflatable bladder two 34 and observe whether the value of the pressure gauge two 33 is stable at a certain value. By setting the pressure gauge two 33 and the inflatable bladder two 34, if the value of the pressure gauge two 33 is fixed at a certain value, it means comparison. The air tightness of the tube 31 is good. If the value of the pressure gauge 233 gradually decreases to the atmospheric pressure value, it means that the air tightness of the comparison tube 31 is not good;

Then separate the two sets of detection shells 11, place the comparison tube 31 with good airtightness between the two sets of detection shells 11, and then rotate the hand bolt 26 to rotate the threaded rod 25, and the threaded rod 25 drives the connecting plate 24 to move, so that The two sets of connecting rods 22 rotate, driving the two sets of clamping rods 23 to rotate, so that the two sets of clamping rods 23 drive the two sets of detection shells 11 to approach the middle position, and one side of the two sets of sealing strips 15 is in close contact with the outer wall of the comparison tube 31. When the two groups of threaded columns 13 are in contact with each other on one side, rotate the threaded seat 14 to fix the two groups of threaded columns 13 together, thereby completing the installation of the two sets of detection shells 11, and then repeatedly pinch the inflatable bladder 17 and observe the pressure gauge 16 The numerical value changes, and then stop pinching the inflatable bladder 17, and observe whether the value of the pressure gauge 16 is stable at a certain value. By setting the pressure gauge 16 and the inflatable bladder 17, the air tightness of the comparison tube 31 has been tested in advance. Good. If the value of pressure gauge one 16 is stable, it means that the air tightness of the two sets of detection shells 11 is good. If the value of pressure gauge one 16 gradually decreases to atmospheric pressure, it means that the air tightness of the two sets of detection shells 11 is not good;

Then remove the comparison tube 31, place the two sets of detection shells 11 on the outer wall of the heat exchange tube, rotate the hand bolt 26 so that the two sets of detection shells 11 clamp the outer wall of the heat exchange tube, and rotate the threaded seat 14 to fix the two sets of threaded columns. 13. Then repeatedly squeeze the inflatable bladder 17 and observe the change in the value of the pressure gauge 16. By setting the pressure gauge 16 and the inflatable bladder 17, stop squeezing the inflatable bladder 17. If the value of the pressure gauge 16 is stable, it means this The air tightness of a section of heat exchange tube is good. If the value of pressure gauge 16 gradually decreases to the atmospheric pressure value, it means that the air tightness of this section of heat exchange tube is not good. It is convenient to check the air tightness of each section of heat exchange tube. detection, not easily affected by the temperature environment, small in size and easy to operate.

Example 2

As shown in Figures 1, 6 and 7, both sets of fixing mechanisms 4 include fixing tubes 41. Limiting rods 42 are provided inside the two sets of fixing tubes 41, and cylinders 43 are fixedly mounted on the tops of the two sets of limiting rods 42. , one end of the two sets of cylinders 43 is rotatably connected with a flip bolt 44, one end of the two sets of limiting rods 42 is fixedly installed with a spring 45, the bottoms of the two sets of fixed tubes 41 are fixedly connected to the tops of the two sets of clamping rods 23, respectively. One end of the two sets of limiting rods 42 penetrates the two sets of fixed lugs 12 respectively, the tops of the two sets of cylinders 43 pass through the two sets of fixed tubes 41 respectively, and the other ends of the two sets of springs 45 are fixedly connected to the inner walls of the two sets of fixed tubes 41 respectively. One side of the set of flipping bolts 44 is in contact with the tops of the two sets of fixed tubes 41 respectively.

In this embodiment, the two sets of flip bolts 44 are first moved so that the stressed ends of the two sets of flip bolts 44 are in the vertical upward direction. At this time, the two sets of limiting rods 42 are in an upward retracted state, and then the two sets of flip bolts 44 are clamped One end of the rod 23 is respectively clamped to one end of the two sets of fixed ears 12. By setting two sets of flip bolts 44 and two sets of springs 45, the two sets of flip bolts 44 are flipped, so that the stressed end of the flip bolts 44 is in the horizontal direction. The flip bolt 44 drives the two sets of cylinders 43 to move downward. At this time, the two sets of springs 45 extend, causing the two sets of limiting rods 42 to move downward and penetrate the two sets of fixed lugs 12, thereby realizing the two sets of fixed lugs 12 and the two sets of fixed lugs 12. The fixation of the set of clamping rods 23 facilitates the disassembly of the two sets of detection shells 11 and the clamping rods 23 when the detection shell 11 is damaged, and facilitates the replacement of the detection shell 11.

Example 3

According to Figure 1-8, a method of using a condenser heat exchange tube leak detection device specifically includes the following steps:

Step 1: Test the sealing of the comparison tube 31, including the following steps:

(1) Install the sealing cover 32 on one end of the comparison tube 31 and ensure that the value of the pressure gauge 233 is the atmospheric pressure value;

(2) Repeatedly pinch the inflatable bladder 234 and observe the numerical changes of the pressure gauge 233;

(3) Stop pinching the inflatable bladder 234 and observe whether the value of the pressure gauge 233 is stable at a certain value;

Step 2: Test the sealing properties of the two sets of detection shells 11, including the following steps:

(1) Separate the two sets of detection shells 11, and place the comparison tube 31 with good air tightness between the two sets of detection shells 11;

Before separating the two groups of detection shells 11, the following steps are included:

(11) Move the two sets of flip bolts 44 so that the stressed ends of the two sets of flip bolts 44 are in the vertical upward direction. At this time, the two sets of limit rods 42 are in an upward retracted state;

(12) Connect one end of the two sets of clamping rods 23 to one end of the two sets of fixing ears 12 respectively;

(13) Turn the two sets of flip bolts 44 so that the stressed end of the flip bolts 44 is in the horizontal direction, and the two sets of springs 45 extend, causing the two sets of limit rods 42 to move downward and penetrate the two sets of fixed ears 12;

(2) Rotate the hand bolt 26 to rotate the threaded rod 25. The threaded rod 25 drives the connecting plate 24 to move, causing the two sets of connecting rods 22 to rotate, driving the two sets of clamping rods 23 to rotate, and causing the two sets of clamping rods 23 to drive the two sets of clamping rods 23. The set of detection shells 11 approaches the middle position, and one side of the two sets of sealing strips 15 is in close contact with the outer wall of the comparison tube 31;

(3) One side of the two sets of threaded columns 13 is in contact with each other, and the threaded seat 14 is rotated to fix the two sets of threaded columns 13 together, completing the installation of the two sets of detection shells 11;

(4) Repeatedly pinch the inflatable bladder 17 and observe the changes in the value of the pressure gauge 16. Stop pinching the inflatable bladder 17 and observe whether the value of the pressure gauge 16 is stable at a certain value to determine the air pressure of the two sets of detection shells 11. Whether the tightness is good;

Step 3: Test the air tightness of the heat exchange tube, including the following steps:

(1) Remove the contrast tube 31;

(2) Place the two sets of detection shells 11 on the outer wall of the heat exchange tube, repeat the operation of step 2 above, and detect the air tightness of the heat exchange tube.

The usage method and working principle of this device: first install the sealing cover 32 on one end of the comparison tube 31, ensure that the value of the pressure gauge 233 is the atmospheric pressure value, then repeatedly pinch the inflatable bladder 234, and observe the value of the pressure gauge 233 change, and then stop pinching the inflatable bladder 234, and observe whether the value of the pressure gauge 233 is stable at a certain value. If the value of the pressure gauge 233 is fixed at a certain value, it means that the air tightness of the comparison tube 31 is good. If the value of pressure gauge 233 gradually decreases to the atmospheric pressure value, it means that the air tightness of the comparison tube 31 is not good;

First, move the two sets of flip bolts 44 so that the stressed ends of the two sets of flip bolts 44 are in the vertical upward direction. At this time, the two sets of limiting rods 42 are in an upward retracted state, and then move the one ends of the two sets of clamping rods 23 respectively. It is clamped on one end of the two sets of fixed ears 12, and the two sets of flip bolts 44 are flipped so that the force-bearing end of the flip bolts 44 is in the horizontal direction. The two sets of flip bolts 44 drive the two sets of cylinders 43 to move downward. At this time, the two sets of springs 45 Extend, so that the two sets of limiting rods 42 move downward and penetrate the two sets of fixing lugs 12 to fix the two sets of fixing lugs 12 and the two sets of clamping rods 23;

Then separate the two sets of detection shells 11, place the comparison tube 31 with good airtightness between the two sets of detection shells 11, and then rotate the hand bolt 26 to rotate the threaded rod 25, and the threaded rod 25 drives the connecting plate 24 to move, so that The two sets of connecting rods 22 rotate, driving the two sets of clamping rods 23 to rotate, so that the two sets of clamping rods 23 drive the two sets of detection shells 11 to approach the middle position, and one side of the two sets of sealing strips 15 is in close contact with the outer wall of the comparison tube 31. When the two groups of threaded columns 13 are in contact with each other on one side, rotate the threaded seat 14 to fix the two groups of threaded columns 13 together, thereby completing the installation of the two sets of detection shells 11, and then repeatedly pinch the inflatable bladder 17 and observe the pressure gauge 16 value changes, then stop pinching the inflatable bladder 17, and observe whether the value of the pressure gauge 16 is stable at a certain value. Since the air tightness of the comparison tube 31 has been tested in advance, if the value of the pressure gauge 16 is stable, it means that both The air tightness of the two sets of detection shells 11 is good. If the value of the pressure gauge 16 gradually decreases to atmospheric pressure, it means that the air tightness of the two sets of detection shells 11 is not good;

Then remove the comparison tube 31, place the two sets of detection shells 11 on the outer wall of the heat exchange tube, rotate the hand bolt 26 so that the two sets of detection shells 11 clamp the outer wall of the heat exchange tube, and rotate the threaded seat 14 to fix the two sets of threaded columns. 13. Then repeatedly squeeze the inflatable bladder 17 to observe the change in the value of the pressure gauge 16. Stop squeezing the inflatable bladder 17. If the value of the pressure gauge 16 is stable, it means that the air tightness of this section of the heat exchange tube is good. If the pressure If the value of 16 gradually decreases to the atmospheric pressure value, it means that the air tightness of this section of the heat exchange tube is not good.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A condenser heat exchange tube leak detection device, including a detection mechanism (1), characterized in that: the detection mechanism (1) includes two sets of detection shells (11), and two sets of detection shells (11) Fixed lugs (12) are fixedly installed on one side of the two groups of detection shells (11). Threaded posts (13) are fixedly installed on one side of the two sets of detection shells (11). The outer walls of the two sets of threaded posts (13) are threadedly connected with a set of threaded posts (13). Threaded seat (14), two sets of detection shells (11) are fixedly installed with sealing strips (15) on one side, and one set of detection shells (11) is fixedly installed with a pressure gauge (16) on the outer wall. An inflatable leather bag (17) is fixedly installed on the outer wall of the detection shell (11); A clamping mechanism (2) is provided on one side of the two sets of detection shells (11). The clamping mechanism (2) includes a fixed rod (21), and both ends of the fixed rod (21) are fixedly installed. Connecting rod (22), one end of the two groups of connecting rods (22) is rotationally connected to a clamping rod (23), and a connecting plate (24) is provided between the two groups of clamping rods (23). A threaded rod (25) is threadedly connected to the interior of the connecting plate (24). A hand bolt (26) is fixedly installed at one end of the threaded rod (25). A comparison mechanism is provided inside the two sets of detection shells (11). (3), both sets of fixing lugs (12) are provided with fixing mechanisms (4) on their tops. 2. A condenser heat exchange tube leak detection device according to claim 1, characterized in that: the comparison mechanism (3) includes a comparison tube (31), and the top of the comparison tube (31) is fixedly installed. There is a sealing cover (32), a pressure gauge two (33) is installed through the top of the sealing cover (32), and an inflatable bladder (34) is installed through the top of the sealing cover (32). 3. A condenser heat exchange tube leak detection device according to claim 2, characterized in that: the outer wall of the comparison tube (31) is in contact with one side of the two sets of sealing strips (15), and the One end of the second pressure gauge (33) is arranged inside the contrast tube (31), and one end of the second inflatable bladder (34) is arranged inside the contrast tube (31). 4. A leak detection device for condenser heat exchange tubes according to claim 1, characterized in that: both groups of the fixing mechanisms (4) include fixed tubes (41), and the two groups of fixed tubes (41) ) are provided with limit rods (42) inside, and cylinders (43) are fixedly installed on the tops of both sets of limit rods (42). One end of the two sets of cylinders (43) is rotatably connected with a flip bolt (44), One end of the two sets of limiting rods (42) is fixedly installed with a spring (45). 5. A condenser heat exchange tube leak detection device according to claim 4, characterized in that: the bottoms of the two sets of fixed tubes (41) are fixedly connected to the tops of the two sets of clamping rods (23) respectively. , one end of the two sets of limiting rods (42) respectively penetrates the two sets of fixed lugs (12). 6. A leak detection device for condenser heat exchange tubes according to claim 4, characterized in that: the tops of the two groups of cylinders (43) respectively penetrate the two groups of fixed tubes (41), and the two groups of springs The other ends of (45) are fixedly connected to the inner walls of the two sets of fixed tubes (41) respectively, and one side of the two sets of flip bolts (44) is in contact with the tops of the two sets of fixed tubes (41) respectively. 7. A condenser heat exchange tube leak detection device according to claim 1, characterized in that: one side of the two groups of threaded columns (13) contacts each other, and the two groups of sealing strips (15) contact each other. One side is in contact with each other, and the two ends of the connecting plate (24) are rotationally connected to one side of the two sets of clamping rods (23) respectively. 8. A condenser heat exchange tube leak detection device according to claim 1, characterized in that: one end of the threaded rod (25) is arranged inside the fixed rod (21), and the two sets of clamping One end of the rod (23) is fixedly connected to one end of the two sets of fixed ears (12), and one side of the hand bolt (26) and one side of the fixed rod (21) are in contact with each other. 9. A method of using a condenser heat exchange tube leak detection device, characterized by using a condenser heat exchange tube leak detection device according to any one of the above claims 1-8, including the following step: S1. Detect the tightness of the comparison tube; S11. Install the sealing cap on one end of the comparison tube and ensure that the value of pressure gauge 2 is the atmospheric pressure value; S12. Repeatedly pinch the inflated bladder 2 and observe the numerical changes of the pressure gauge 2; S13. Stop pinching the inflatable bladder 2 and observe whether the value of the pressure gauge 2 is stable at a certain value; S2. Test the sealing properties of the two sets of detection shells; S21. Separate the two sets of detection shells and place the comparison tube with good air tightness between the two sets of detection shells; S22. Rotate the hand bolt to rotate the threaded rod, which drives the connecting plate to move, causing the two sets of connecting rods to rotate, driving the two sets of clamping rods to rotate, so that the two sets of clamping rods drive the two sets of detection shells to move closer to the middle position. One side of the two sets of sealing strips is in close contact with the outer wall of the tube; S23. One side of the two sets of threaded columns are in contact with each other, and the threaded seat is rotated to fix the two sets of threaded columns together, completing the installation of the two sets of detection shells; S24. Repeatedly pinch the inflatable bladder 1 and observe the changes in the value of the pressure gauge 1. Stop pinching the inflatable bladder 1 and observe whether the value of the pressure gauge 1 is stable at a certain value to determine whether the air tightness of the two sets of detection shells is good; S3. Check the air tightness of the heat exchange tube; S31. Remove the comparison tube; S32. Place the two sets of detection shells on the outer wall of the heat exchange tube, and repeat the above step S2. 10. The method of using a condenser heat exchange tube leak detection device according to claim 9, characterized in that in step S21, before the step of separating the two sets of detection shells, the clamping mechanism and the two sets of detection shells are separated. assemble the detection shell for installation, including the following steps: S211. Move the two sets of flip bolts so that the stressed ends of the two sets of flip bolts are in the vertical upward direction. At this time, the two sets of limit rods are in an upward retracted state; S212. Connect one end of the two sets of clamping rods to one end of the two sets of fixing lugs respectively; S213. Turn the two sets of flip bolts so that the stressed end of the flip bolts is in the horizontal direction. The two sets of springs extend, causing the two sets of limit rods to move downward and penetrate the two sets of fixed lugs.