A leak detection apparatus for an expansion tank

Abstract

The application relates to the technical field of leakage detection equipment, in particular to leakage detection equipment for an expansion tank, which comprises a detection barrel, the upper end surface of the detection barrel is screw-connected and fixed with a top cover plate of an annular structure, the middle part of the top cover plate is an inlet, the lower end surface of the detection barrel is fixed with a base, a pipeline is in communication with the outside lower side and the inside of the detection barrel, the inside bottom end of the detection barrel is fixed with a support table, the upper end surface of the support table is designed in a hemispherical structure, the expansion tank is placed on the upper end surface of the support table, a driving mechanism is arranged on the upper side of the detection barrel, and a detection mechanism is arranged outside the expansion tank. The driving mechanism cooperates with the detection mechanism, the driving mechanism can control the detection mechanism to ascend and descend and detect the leakage points of the expansion tank along the periphery of the expansion tank, the expansion tank is immersed in water, the air floatation method is adopted to comprehensively detect the leakage points of the expansion tank in cooperation with a bubble detection sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage detection equipment, and in particular to a leakage detection equipment for an expansion tank. Background Art

[0002] The working principle of the expansion tank: When pressurized water enters the expansion tank's bladder, the nitrogen sealed inside is compressed. According to Boyle's gas law, the gas's volume decreases and its pressure increases as it is compressed. Water inflow stops when the gas pressure in the expansion tank matches the water pressure. When the water loses pressure and the pressure decreases, the gas pressure in the expansion tank exceeds the water pressure. At this point, the gas expands, squeezing the water out of the bladder and replenishing it to the external water supply system.

[0003] The Chinese patent with authorization announcement number CN114563145B specifically discloses a leakage detection device for an expansion tank, which relates to the field of leakage detection equipment. It includes an expansion tank, and a rubber airbag is provided inside the expansion tank. The rubber airbag divides the expansion tank into a water cavity and an air cavity distributed inside and outside. The present invention can detect leakage at the rubber airbag. By detecting the dynamic balance and static balance duration of the entire system, it is determined whether the rubber airbag is leaking. The upper end of the expansion tank is also provided with an inspection port, and a support assembly can be inserted into the inspection port. A repair assembly is provided on the support assembly. The repair assembly can detect the position of the damaged part on the rubber airbag and can also repair the damaged part simultaneously, which is highly practical.

[0004] To this end, a leakage detection device for an expansion tank is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a leakage detection device for an expansion tank. The driving mechanism cooperates with the detection mechanism, and the driving mechanism can control the detection mechanism to move up and down and detect the leakage points of the expansion tank along the rotation of the expansion tank. The expansion tank is immersed in water, and the flotation method is used in combination with the bubble detection sensor to comprehensively detect the leakage points of the expansion tank to solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A leakage detection device for an expansion tank comprises a detection barrel, wherein the upper end surface of the detection barrel is screwedly fixed with a top cover plate of an annular structure, the middle portion of the top cover plate is a placement entrance, a base is fixed to the lower end surface of the detection barrel, a pipe is connected to the lower side of the outer surface of the detection barrel and the interior, a support platform is fixed to the bottom end of the interior of the detection barrel, and the upper end surface of the support platform has a hemispherical structure design, the expansion tank is placed on the upper end surface of the support platform, a driving mechanism is provided on the upper side of the detection barrel, a detection mechanism is provided on the outside of the expansion tank, and a repair mechanism is provided inside the detection mechanism;

[0008] The driving mechanism includes a first motor and a second motor, wherein the first motor and the second motor are both fixedly connected to the upper end surface of the top cover plate, and the lower end output shafts of the first motor and the second motor extend through the top cover plate, the lower end of the first motor is fixed with a threaded rod, and the lower end of the second motor is fixed with a drive rod, and the threaded rod and the drive rod are both transmission-connected to the detection mechanism. The detection mechanism can be controlled to move up and down and rotate along the expansion tank to detect leakage points of the expansion tank through the driving mechanism;

[0009] The detection mechanism includes a detection ring and an inner ring. The inner ring is located inside the detection ring and the two are rotatably connected. Several bubble detection sensors are fixed at equal distances on the lower end surface of the inner ring. Water is injected into the detection barrel to submerge the expansion tank. Bubbles will float at the leakage point of the expansion tank. The bubble detection sensor is used to determine the leakage point of the expansion tank and then the repair mechanism is used to repair it.

[0010] Preferably, the bottoms of the threaded rod and the driving rod are rotatably connected to the bottom end of the detection barrel through bearings, and the motor 1 and the motor 2 are both connected to an external power supply and a control module.

[0011] Preferably, ear plate one and ear plate two are fixed on the outside of the detection ring at positions corresponding to the threaded rod and the driving rod, respectively. Holes are provided on ear plate one and ear plate two, and the threaded rod and the driving rod pass through ear plate one and ear plate two respectively through the holes. The threaded rod is threadedly connected to ear plate one, and the driving rod is movably connected to ear plate two up and down.

[0012] Preferably, the detection mechanism further comprises a sliding groove provided on the inner wall of the detection ring, a slip ring is fixed on the detection ring side of the inner ring, the slip ring is located inside the sliding groove, and the inner ring and the detection ring are rotationally connected via the slip ring and the sliding groove.

[0013] Preferably, a rotating groove is opened inside the detection ring at a position corresponding to the second ear plate, and a rotating wheel is horizontally connected inside the rotating groove. The rotating wheel is made of hard rubber material, and the outer surface of the rotating wheel is tightly fitted with the driving rod and the slip ring respectively.

[0014] Preferably, the repair mechanism is fixed to the inner side surface of the inner ring, and the repair mechanism can perform repair operations according to the leakage point of the expansion tank detected by the detection mechanism.

[0015] Preferably, the repair mechanism includes an air cavity opened inside the inner ring, a connecting rod is provided through the air cavity, a smoothing plate is fixed to the end of the connecting rod away from the air cavity, a magnetic plate is fixed to one end of the connecting rod located in the air cavity, an electromagnet is embedded and connected to the position corresponding to the magnetic plate in the air cavity, and a spring is fixed on the outside of the connecting rod between the magnetic plate and the air cavity.

[0016] Preferably, a sealing ring is sleeved on the outer surface of the magnetic plate, an airbag is glued to the side of the smoothing plate away from the connecting rod, a spirally structured air tube is fixed inside the smoothing plate, one end of the air tube is connected to the air cavity, and the other end is connected to the airbag.

[0017] Preferably, a rubber patch is adhered to the outer surface of the airbag, and a heating block is built into the smoothing plate.

[0018] Beneficial effects of the present invention:

[0019] 1. This application uses a driving mechanism in conjunction with a detection mechanism. The driving mechanism can control the detection mechanism to move up and down and rotate along the expansion tank to detect leakage points of the expansion tank, thereby immersing the expansion tank in water and using the flotation method in conjunction with a bubble detection sensor to comprehensively detect leakage points of the expansion tank.

[0020] 2. This application designs a detection mechanism in conjunction with a repair mechanism. After the detection mechanism determines the leakage point of the expansion tank, the repair mechanism can be driven to repair and seal the leakage point on the surface of the expansion tank. No manual repair is required, which saves time and effort and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the driving mechanism of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the detection mechanism of the present invention;

[0024] Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram;

[0025] Figure 5 It is a schematic cross-sectional view of the overall structure of the present invention;

[0026] Figure 6 For the present invention Figure 5 A in the middle is an enlarged schematic diagram;

[0027] Figure 7 Schematic diagram of the structure of the repair mechanism of the present invention.

[0028] In the figure: 1. Detection barrel; 11. Top cover plate; 12. Base; 13. Pipe; 2. Driving mechanism; 21. Motor 1; 22. Motor 2; 23. Threaded rod; 24. Driving rod; 25. Ear plate 1; 26. Ear plate 2; 3. Detection mechanism; 31. Detection ring; 32. Bubble detection sensor; 33. Inner ring; 34. Slip ring; 35. Rotor; 36. Rotating groove; 4. Repair mechanism; 41. Electromagnet; 42. Smoothing plate; 43. Air cavity; 44. Connecting rod; 45. Spring; 46. Magnetic plate; 47. Heating block; 48. Trachea; 49. Air bag; 5. Expansion tank; 51. Support table. DETAILED DESCRIPTION

[0029] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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 making creative work are within the scope of protection of the present invention.

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0031] Reference Figure 1-7 , a leakage detection device for an expansion tank 5, comprising a detection barrel 1, the upper end surface of the detection barrel 1 is screwedly fixed with a top cover plate 11 of an annular structure, the middle part of the top cover plate 11 is used for placing an entrance, the lower end surface of the detection barrel 1 is fixed with a base 12, the lower side of the outer surface of the detection barrel 1 is connected to the interior by a pipe 13, the inner bottom end of the detection barrel 1 is fixed with a support platform 51, and the upper end surface of the support platform 51 is designed as a hemispherical structure, the upper end surface of the support platform 51 is placed on the expansion tank 5, the upper side of the detection barrel 1 is provided with a driving mechanism 2, the outside of the expansion tank 5 is provided with a detection mechanism 3, and the inside of the detection mechanism 3 is provided with a repair mechanism 4;

[0032] The driving mechanism 2 includes a motor 1 21 and a motor 2 22 . The motors 1 21 and 22 are both fixedly connected to the upper end surface of the top cover plate 11 , and the lower output shafts of the motors 1 21 and 2 22 extend through the top cover plate 11 . A threaded rod 23 is fixed to the lower end of the motor 1 21 , and a drive rod 24 is fixed to the lower end of the motor 2 22 . The threaded rod 23 and the drive rod 24 are both transmission-connected to the detection mechanism 3 . The driving mechanism 2 can control the detection mechanism 3 to move up and down and rotate along the expansion tank 5 to detect leakage points in the expansion tank 5 .

[0033] The detection mechanism 3 includes a detection ring 31 and an inner ring 33. The inner ring 33 is located inside the detection ring 31, and the two are rotatably connected. Several bubble detection sensors 32 are fixed at equal distances on the lower end surface of the inner ring 33. Water is injected into the detection barrel 1 to immerse the expansion tank 5. Bubbles will float up at the leakage point of the expansion tank 5. The bubble detection sensor 32 is used to determine the leakage point of the expansion tank 5 and then repair it with the repair mechanism 4. This application cooperates with the detection mechanism 3 through the driving mechanism 2. The driving mechanism 2 can control the detection mechanism 3 to move up and down and rotate along the expansion tank 5 to detect the leakage point of the expansion tank 5, thereby immersing the expansion tank 5 with water and adopting the flotation method in combination with the bubble detection sensor 32 to comprehensively detect the leakage point of the expansion tank 5.

[0034] Specifically, the bottoms of the threaded rod 23 and the driving rod 24 are rotatably connected to the bottom end of the detection barrel 1 through bearings, and the motor 1 21 and the motor 2 22 are connected to the external power supply and the control module. The outer portion of the detection ring 31 is fixed with an ear plate 1 25 and an ear plate 2 26 at positions corresponding to the threaded rod 23 and the driving rod 24, respectively. The ear plate 1 25 and the ear plate 2 26 are both provided with holes, and the threaded rod 23 and the driving rod 24 are respectively penetrated by the holes in the ear plate 1 25 and the ear plate 2 26. The threaded rod 23 is threadedly connected to the ear plate 1 25, and the driving rod 24 is movably connected to the ear plate 2 26 up and down. When working, the motor 1 21 is conductive and operates, and the external control module The block first controls the motor 21 to rotate and drives the threaded rod 23 to rotate. At this time, the ear plate 1 25 threadedly connected to the threaded rod 23 carries the detection mechanism 3 to move downward as a whole, and then the ear plate 26 moves downward on the outer surface of the driving rod 24. Because before this, water above the height of the expansion tank 5 is injected into the detection barrel 1, if there is a leak in the expansion tank 5, bubbles will be generated at the leakage point and float up under the buoyancy of the water. The initial position is located on the upper side of the expansion tank 5, and the detection mechanism 3 surrounding the outside of the expansion tank 5 can accurately detect the floating bubbles and further confirm the position of the leakage point of the expansion tank 5 through the cooperation of the motor 1 21 and the motor 2 22.

[0035] Specifically, the detection mechanism 3 also includes a sliding groove provided on the inner wall of the detection ring 31, a slip ring 34 is fixed to the side of the detection ring 31 of the inner ring 33, the slip ring 34 is located inside the sliding groove, the inner ring 33 and the detection ring 31 are rotatably connected through the slip ring 34 and the sliding groove, the interior of the detection ring 31 is provided with a rotation groove 36 at a position corresponding to the ear plate 26, the interior of the rotation groove 36 is horizontally rotatably connected with a runner 35, the runner 35 is made of hard rubber material, and the outer surface of the runner 35 is tightly fitted with the drive rod 24 and the slip ring 34 respectively, when detecting the leakage point of the expansion tank 5 During the process, the driving rod 24 can also be driven to rotate by the motor 22. At this time, the wheel 35 fitted with the outer surface of the driving rod 24 rotates, and the slip ring 34 fitted with the other side of the wheel 35 rotates inside the sliding groove. At this time, the inner ring 33 connected to the slip ring 34 rotates synchronously, and moves around the outside of the expansion tank 5, and cooperates with the bubble detection sensor 32 to accurately detect the bubbles at the leakage point, so as to determine the location of the leakage point. In this process, whether it is the up and down movement of the detection mechanism 3 controlled by the motor 1 21 or the rotational movement of the detection mechanism 3 controlled by the motor 2 22, they are all partially sequential, but cannot act at the same time.

[0036] Specifically, the repair mechanism 4 is fixed to the inner side surface of the inner ring 33, and the repair mechanism 4 can perform repair operations according to the leakage points of the expansion tank 5 detected by the detection mechanism 3. The repair mechanism 4 includes an air cavity 43 opened inside the inner ring 33, and a connecting rod 44 is provided in the air cavity 43. A smoothing plate 42 is fixed to the end of the connecting rod 44 away from the air cavity 43, and a magnetic plate 46 is fixed to one end of the connecting rod 44 located in the air cavity 43. An electromagnet 41 is embedded and connected to the corresponding position of the magnetic plate 46 in the air cavity 43. The outside of the connecting rod 44 is sleeved and fixed with a spring 45 between the magnetic plate 46 and the air cavity 43. A sealing ring is sleeved on the outer surface of the magnetic plate 46. The side of the smoothing plate 42 away from the connecting rod 44 is glued with an airbag 49. A spiral air pipe 48 is fixed in the smoothing plate 42. One end of the air pipe 48 is connected to the air cavity 43, and the other end is connected to the airbag 49. A rubber patch is adhered to the outer surface of the airbag 49. The flat plate 42 has a built-in heating block 47. When the leakage point is confirmed by the detection mechanism 3, the water in the detection barrel 1 is discharged through the pipe 13. Then, the electromagnet 41 is in a conductive state in the silent state to attract the magnetic plate 46. Then the external control module controls the circuit connected to the electromagnet 41 to cut off the power. At this time, the connecting rod 44 moves in the opposite direction of the electromagnet 41 in the air cavity 43 under the action of the spring 45. At this time, the smoothing plate 42 carries the airbag 49 and the rubber patch adhered to the outside of the airbag 49 to fit the leakage point on the outside of the expansion tank 5. Then the magnetic plate 46 moves synchronously with the connecting rod 44 inside the air cavity 43. At this time, the gas in the air cavity 43 is input into the airbag 49 through the air pipe 48 under the action of the magnetic plate 46 and the rubber sealing ring on the outside of the magnetic plate 46. At this time, the expansion of the airbag 49 fully squeezes the patch so that it is firmly adhered and fixed to the leakage point of the expansion tank 5, and the heating block 47 is heated at this time. The temperature generated heats the adhesive layer of the patch through the smoothing plate 42 and the airbag 49 to make it adhere more firmly.

[0037] When the present invention is used, at work, first the motor 1 21 conducts electricity and runs, the external control module first controls the motor 1 21 to rotate, drives the threaded rod 23 to rotate, at this time the ear plate 1 25 threadedly connected to the threaded rod 23 carries the detection mechanism 3 to move downward as a whole, and then the ear plate 26 moves downward on the outer surface of the driving rod 24. Because before this, water that is higher than the height of the expansion tank 5 is injected into the detection barrel 1, so if there is a leak in the expansion tank 5, bubbles are generated at the leak point and float up under the buoyancy of the water, and the initial position is located on the upper side of the expansion tank 5 and surrounds the outer side of the expansion tank 5. The detection mechanism 3 of the ring can accurately detect the floating bubbles and further confirm the position of the leakage point of the expansion tank 5 through the cooperation of the motor 1 21 and the motor 2 22. In the process of detecting the leakage point of the expansion tank 5, the driving rod 24 can also be driven to rotate by the motor 2 22. At this time, the runner 35 fitted with the outer surface of the driving rod 24 rotates, and the slip ring 34 fitted with the other side of the runner 35 rotates inside the sliding groove. At this time, the inner ring 33 connected to the slip ring 34 rotates synchronously, and moves around the outside of the expansion tank 5, cooperating with the bubble detection sensor 32 to accurately detect the bubbles at the leakage point, thereby confirming The position of the leakage point is determined. During this process, whether it is the up and down movement of the detection mechanism 3 controlled by the motor 1 21 or the turnover movement of the detection mechanism 3 controlled by the motor 2 22, they are all partially sequential, but cannot act at the same time. When the leakage point is confirmed by the detection mechanism 3, the water in the detection barrel 1 is discharged through the pipe 13. Then, the electromagnet 41 is in a conductive state in a silent state to absorb the magnetic plate 46. Then the external control module controls the circuit connected to the electromagnet 41 to cut off the power. At this time, the connecting rod 44 moves in the opposite direction of the electromagnet 41 in the air cavity 43 under the action of the spring 45. At this time The smoothing plate 42 carries the airbag 49 and the rubber patch adhered to the outside of the airbag 49 is attached to the external leakage point of the expansion tank 5, and then the magnetic plate 46 moves synchronously with the connecting rod 44 inside the air cavity 43. At this time, the gas in the air cavity 43 is input into the airbag 49 through the air pipe 48 under the action of the magnetic plate 46 and the rubber sealing ring outside the magnetic plate 46. At this time, the expansion of the airbag 49 fully squeezes the patch so that it is firmly adhered and fixed to the leakage point of the expansion tank 5, and the heating block 47 is heated at this time. The temperature generated heats the adhesive layer of the patch through the smoothing plate 42 and the airbag 49 to make it adhere more firmly.

[0038] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for an expansion tank, comprising a detection barrel (1), characterized in that: The upper end surface of the detection barrel (1) is screwed and fixed with a top cover plate (11) of an annular structure, the middle part of the top cover plate (11) is a placement entrance, the lower end surface of the detection barrel (1) is fixed with a base (12), the lower side of the outer surface of the detection barrel (1) is connected to the interior by a pipe (13), the inner bottom end of the detection barrel (1) is fixed with a support platform (51), and the upper end surface of the support platform (51) is designed as a hemispherical structure, the upper end surface of the support platform (51) is placed with an expansion tank (5), the upper side of the detection barrel (1) is provided with a driving mechanism (2), the outside of the expansion tank (5) is provided with a detection mechanism (3), and the detection mechanism (3) is provided with a repair mechanism (4); The driving mechanism (2) comprises a motor 1 (21) and a motor 2 (22), wherein the motor 1 (21) and the motor 2 (22) are both fixedly connected to the upper end surface of the top cover plate (11), and the lower end output shafts of the motor 1 (21) and the motor 2 (22) extend through the top cover plate (11), a threaded rod (23) is fixed to the lower end of the motor 1 (21), and a driving rod (24) is fixed to the lower end of the motor 2 (22), and the threaded rod (23) and the driving rod (24) are both transmission-connected to the detection mechanism (3), and the detection mechanism (3) can be controlled to rise and fall and rotate along the expansion tank (5) to detect leakage points of the expansion tank (5) through the driving mechanism (2); The detection mechanism (3) includes a detection ring (31) and an inner ring (33), the inner ring (33) being located inside the detection ring (31) and the two being rotatably connected, and a plurality of bubble detection sensors (32) being fixed at equal distances on the lower end surface of the inner ring (33); water is injected into the detection barrel (1) to submerge the expansion tank (5), and bubbles will float up at the leaking part of the expansion tank (5), and the leaking point of the expansion tank (5) is determined by cooperating with the bubble detection sensor (32) and then being repaired by cooperating with the repair mechanism (4); The detection mechanism (3) further comprises a sliding groove provided on the inner wall of the detection ring (31); a slip ring (34) is fixed to the side of the detection ring (31) of the inner ring (33); the slip ring (34) is located inside the sliding groove; the inner ring (33) and the detection ring (31) are rotatably connected via the slip ring (34) and the sliding groove; A rotation groove (36) is provided inside the detection ring (31) at a position corresponding to the second ear plate (26), and a rotating wheel (35) is horizontally rotatably connected inside the rotation groove (36). The rotating wheel (35) is made of hard rubber material, and the outer surface of the rotating wheel (35) is tightly fitted with the driving rod (24) and the slip ring (34) respectively.

2. A leakage detection device for an expansion tank according to claim 1, characterized in that: The bottoms of the threaded rod (23) and the driving rod (24) are both rotatably connected to the bottom end of the detection barrel (1) via bearings, and the motor 1 (21) and the motor 2 (22) are both connected to an external power supply and a control module.

3. The leakage detection device for an expansion tank according to claim 2, characterized in that: The outer portion of the detection ring (31) is fixed with an ear plate 1 (25) and an ear plate 2 (26) at positions corresponding to the threaded rod (23) and the driving rod (24), respectively. The ear plate 1 (25) and the ear plate 2 (26) are both provided with holes, and the threaded rod (23) and the driving rod (24) respectively penetrate the ear plate 1 (25) and the ear plate 2 (26) through the holes. The threaded rod (23) is threadedly connected to the ear plate 1 (25), and the driving rod (24) is movably connected to the ear plate 2 (26) in an upper and lower direction.

4. The leakage detection device for an expansion tank according to claim 1, characterized in that: The repair mechanism (4) is fixed to the inner side surface of the inner ring (33), and the repair mechanism (4) can perform repair operations based on the leakage point of the expansion tank (5) detected by the detection mechanism (3).

5. The leakage detection device for an expansion tank according to claim 4, characterized in that: The repair mechanism (4) includes an air cavity (43) provided inside the inner ring (33), a connecting rod (44) is provided through the air cavity (43), a smoothing plate (42) is fixed to one end of the connecting rod (44) away from the air cavity (43), a magnetic plate (46) is fixed to one end of the connecting rod (44) located in the air cavity (43), an electromagnet (41) is embedded and connected at a position corresponding to the magnetic plate (46) in the air cavity (43), and a spring (45) is fixed on the outside of the connecting rod (44) between the magnetic plate (46) and the air cavity (43).

6. The leakage detection device for an expansion tank according to claim 5, characterized in that: The outer surface of the magnetic plate (46) is sleeved with a sealing ring, and the side of the smoothing plate (42) away from the connecting rod (44) is glued with an airbag (49), and a spiral-structured air tube (48) is fixed inside the smoothing plate (42), one end of the air tube (48) is connected to the air cavity (43), and the other end is connected to the airbag (49).

7. The leakage detection device for an expansion tank according to claim 6, characterized in that: A rubber patch is adhered to the outer surface of the airbag (49), and a heating block (47) is built into the smoothing plate (42).

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