Heat exchanger testing device of solar heat collection system and use method of heat exchanger testing device

Abstract

The invention relates to the field of solar energy, in particular to a heat exchanger testing device of a solar heat collection system and a using method of the heat exchanger testing device. The conveying cylinders are symmetrically arranged, connecting openings are formed in the opposite end faces of the two conveying cylinders, through holes are formed in the other ends of the conveying cylinders, two through openings are formed in the side surfaces of the conveying cylinders, and temperature sensors are arranged in the conveying cylinders; the sealing part is arranged at the through hole; the opening is used for opening and closing the port; the electromagnetic valve is arranged in the through hole; the connecting cylinder is arranged between the two conveying cylinders, and the water suction pump is arranged in the connecting cylinder; the rotating shafts are symmetrically arranged on the side surfaces of the side middle parts of the connecting cylinders; the driving part is used for driving the rotating shaft to rotate; the transmission cylinder is sleeved with the sleeve, the connecting cover is arranged at one end of the sleeve, and the end face, with the largest diameter, of the connecting cover faces the connecting cylinder; the sliding part is used for driving the sleeve to slide along the side surface of the conveying cylinder. According to the invention, an operator can be prevented from being scalded by hot fluid in the process of replacing the damaged temperature sensor.

Description

Technical Field

[0001] The invention relates to the field of solar energy, and in particular to a heat exchanger testing device for a solar energy heat collection system and a use method thereof. Background Art

[0002] The function of the heat exchanger in the solar thermal collection system is to transfer part of the heat of the hot body to the cold fluid. In order to ensure the heat exchange efficiency of the heat exchanger, it is necessary to test the hot fluid inlet temperature, hot fluid outlet temperature, cold fluid inlet temperature and cold fluid outlet temperature in the heat exchanger. During the test, four temperature sensors are generally installed at these four positions respectively. However, the applicant found that after the temperature sensors are installed, if one of the temperature sensors is abnormal, it is necessary to remove the temperature sensor from the corresponding position on the heat exchanger. Since the fluid temperature in the heat exchanger is relatively high, during the replacement process, even if the internal and external pipes of the heat exchanger are closed, the residual fluid may still scald the operator.

[0003] In the patent with application number CN201020244853.7 and patent name of temperature measuring device for parallel flow heat exchanger, it includes a pair of mutually parallel and separated manifolds, a number of mutually parallel flat tubes whose two ends are connected to the inner cavity of the two manifolds, fins are arranged between adjacent flat tubes, two side plates are fixedly connected to the outer flat tubes through the fins, and the temperature measuring device is a measuring block arranged between adjacent flat tubes, the measuring block and the flat tubes are made of the same material, and the measuring block is provided with a hole for placing a temperature probe, or a device such as a groove for fixing the probe. The measuring block is in close contact with the flat tubes, and the temperature of the heat exchanger is transmitted to the measuring block in real time. The temperature of the heat exchanger can be conveniently measured using a temperature probe through the hole on the measuring block, but the above technical problems are not solved. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a heat exchanger testing device for a solar thermal collection system and a method of using the same, so as to solve the problem that after the temperature sensors are installed, if one of the temperature sensors is abnormal, it is necessary to remove the temperature sensor from the corresponding position on the heat exchanger. Since the fluid temperature in the heat exchanger is relatively high, during the replacement process, even if the internal and external pipes of the heat exchanger are closed, the residual fluid may still scald the operator.

[0005] Based on the above purpose, the present invention provides a heat exchanger testing device for a solar thermal collection system, including a temperature sensor, and the heat exchanger testing device also includes:

[0006] The transmission cylinders are symmetrically arranged, the opposite end surfaces of the two transmission cylinders are provided with connection openings, the other end of the transmission cylinder is provided with a through hole, the side surface of the transmission cylinder is provided with two through openings, and the interior of the transmission cylinders is provided with the temperature sensor;

[0007] A closing portion provided at the through opening, the closing portion being used to open and close the through opening;

[0008] a solenoid valve disposed in the through hole;

[0009] A connecting cylinder disposed between two transmission cylinders, and a water pump disposed in the connecting cylinder, wherein one end surface of the connecting cylinder is provided with a front opening, and the other end surface of the connecting cylinder is provided with a rear opening, the water inlet of the water pump is communicated with the front opening, and the water outlet of the water pump is communicated with the rear opening;

[0010] A rotating shaft symmetrically arranged on the side surface of the middle part of the connecting tube, one end of the rotating shaft being fixed to the side surface of the connecting tube;

[0011] A driving part for driving the rotating shaft to rotate;

[0012] A sleeve sleeved on the transmission cylinder and a connection cover arranged at one end of the sleeve, wherein the connection cover is in a truncated cone shape, and the end face of the connection cover with the largest diameter faces the connection cylinder;

[0013] A sliding portion for driving the sleeve to slide along the side surface of the transmission cylinder.

[0014] Furthermore, the sliding portion includes:

[0015] Side plates are arranged on both sides of the connecting tube, and the side plates are fixedly connected to the transmission tube through connecting pieces;

[0016] A rotating disk arranged on the inner side of the side plate, and a fixing plate arranged between the rotating disk and the connecting tube, wherein the fixing plate is fixedly connected to the inner side surface of the side plate through a fixing member, a first shaft hole is arranged in the middle of the rotating disk, a second shaft hole is arranged in the middle of the fixing plate, and the rotating shaft passes through the first shaft hole and the second shaft hole;

[0017] Through grooves are provided on both sides of the second shaft hole, and push blocks are slidably connected to the through grooves, the through grooves penetrate the side surface of the fixed plate, the push blocks correspond to the sleeves one by one, and one side of the push blocks is fixedly connected to the corresponding side surface of the sleeve;

[0018] A rotating block is provided on the side of the fixed plate facing the rotating disk, and the rotating block is rotatably connected to a rotating groove provided on the end surface of the rotating disk;

[0019] The end surface of the rotating disk facing the fixed plate is provided with a spiral groove, and the side surface of the push block facing the rotating disk is provided with a thread, and the spiral groove is meshed with the thread; when the rotating disk rotates, the push block is driven to slide along the through groove through the meshing between the spiral groove and the thread;

[0020] The driving unit comprises:

[0021] A motor fixed to the side plate, a linkage block arranged in front of the motor, the linkage block arranged in a through hole penetrating the left and right sides of the motor, the output shaft of the motor fixed in the through hole, the rotating shaft extending into the through hole, and the rotating shaft and the through hole are rotatably connected;

[0022] An inner groove is arranged on the inner wall of the through hole, and a pressing block is slidably connected with the inner groove. The side surface of the rotating shaft is provided with an open groove. When a part of the pressing block is located in the open groove, the linkage block drives the rotating shaft to rotate;

[0023] An extension plate whose side surface is fixed to the top of the pressing block, a surface groove is provided on the side wall of the inner groove close to the rotating disk, and a part of the extension plate passes through the surface groove;

[0024] The side of the rotating disk facing the linkage block is provided with an annular groove, and the outer side of the annular groove is provided with a positioning hole corresponding to the extension plate, the front end of the extension plate is rotatably connected to the annular groove, and when the front end of the extension plate enters the positioning hole, the linkage block drives the rotating disk to rotate;

[0025] A driving assembly for driving the pressing block to slide in the inner groove.

[0026] Furthermore, the driving assembly includes a first electromagnet disposed at the top of the inner groove and a second electromagnet disposed inside the pressing block.

[0027] Furthermore, the first electromagnet is directly opposite to the second electromagnet.

[0028] Furthermore, the heat exchanger testing device also includes:

[0029] An inner hole provided in the rotating shaft and a positioning rod slidably connected to the inner hole, wherein the inner hole is connected to the opening groove;

[0030] A side block fixed to the side surface of the rear end of the positioning rod, the rear end of the positioning rod extends into the second shaft hole, the side wall of the second shaft hole is provided with a side wall annular groove, the side wall of the side wall annular groove is close to the side wall of the rotating disk and is provided with a positioning groove, when the side block is located in the side wall annular groove, the side block is rotatably connected to the side wall annular groove; when the side block enters the positioning groove, the position of the rotating shaft is fixed;

[0031] A driving member used to drive the positioning rod to slide in the inner hole.

[0032] Furthermore, the driving member includes:

[0033] A fourth spring having one end fixedly connected to the front end of the positioning rod, and the other end of the fourth spring fixed to the front end of the inner hole;

[0034] A convex block, the convex block is provided on the side of the pressing block facing the rotating disk, and the convex block is in an arc shape;

[0035] The positioning rod is provided with a pressing groove penetrating its side surface. When the pressing block passes through the opening groove and enters the pressing groove, the protrusion contacts the edge of the pressing groove close to the turntable and drives the positioning rod to move away from the motor.

[0036] Furthermore, the closing portion includes:

[0037] A sealing plate, an inner sliding hole is provided in the transmission cylinder between the through port and the connection opening, the sealing plate is slidably connected with the inner sliding hole, and a side groove is provided on the side wall of the inner sliding hole that penetrates the outer side of the transmission cylinder;

[0038] A transition block slidably connected to the sliding hole, a first spring one end of which is fixedly connected to the top surface of the transition block, and the other end of the first spring is fixed to the bottom surface of the sealing plate;

[0039] A second spring having one end fixedly connected to the bottom surface of the transition block, and the other end of the second spring fixed to the bottom of the inner sliding hole;

[0040] a draw cord having one end fixed to the transition block, the draw cord passing through the side groove;

[0041] The outer side surface of the rotating disk is provided with a first rope groove and a second rope groove;

[0042] In one of the transmission cylinders, the other end of one of the pull ropes is fixed in the first rope groove of one of the rotating disks, and the other end of the other pull rope is fixed in the first rope groove of the other rotating disk;

[0043] In another transmission cylinder, the other end of one of the pull ropes is fixed in the second rope groove of one of the rotating disks, and the other end of the other pull rope is fixed in the second rope groove of the other rotating disk;

[0044] When the turntable rotates, the transition blocks in different transmission cylinders move closer to each other or farther away from each other;

[0045] A fixing assembly disposed in the inner sliding hole, the fixing assembly being used to fix the position of the sealing plate;

[0046] The heat exchanger testing device also includes a slide groove arranged on the side surface of the sleeve, a slider slidably connected to the slide groove, and a third spring with one end fixed to the side surface of the slider, the slider is fixed to the inner side surface of the connecting cover, and the other end of the third spring is fixed to the top of the slide groove.

[0047] Furthermore, the positioning assembly includes a limit block and a linkage member, the side wall of the inner sliding hole is provided with a side hole, the limit block is slidably connected to the side hole, the side of the sealing plate is provided with a limit groove corresponding to the limit block, and the linkage member is used to drive the limit block to slide in the side hole.

[0048] When the linkage piece enables the limit block to enter the limit groove, the position of the sealing plate is fixed, and when the linkage piece enables the limit block to completely enter the side hole, the sealing plate can move in the inner sliding hole.

[0049] Furthermore, the linkage member includes a third electromagnet fixed in the limit block and a fourth electromagnet fixed at the bottom of the side hole.

[0050] The present invention also provides a method for using a heat exchanger testing device for a solar thermal collection system, which adopts the above-mentioned heat exchanger testing device for a solar thermal collection system, including the following steps: when testing the heat exchanger, one port of one of the transmission cylinders is connected to the hot fluid inlet of the heat exchanger, and the other port of the transmission cylinder is connected to the cold fluid inlet of the heat exchanger; then one port of the other transmission cylinder is connected to the hot fluid outlet of the heat exchanger, and the other port of the transmission cylinder is connected to the cold fluid outlet of the heat exchanger, and after completion, the sealing part seals the ports and the solenoid valve seals the through holes; when testing the hot fluid inlet temperature of the heat exchanger, the sliding part first drives the connecting cover away from the connecting cylinder, and then the driving part drives the connecting cylinder to rotate so that the front opening faces the port connected to the hot fluid inlet of the heat exchanger, and after completion, the sliding part is started so that one of the connecting covers seals the front opening and the other connecting cover seals the rear opening. At this time, the port connected to the hot fluid inlet of the heat exchanger is sealed by the corresponding sealing part. The part is opened, and the passage connected to the hot fluid outlet of the heat exchanger is opened through the corresponding closing part, and then the water pump is started, so that a part of the water in the hot fluid inlet of the heat exchanger enters the transmission cylinder and finally flows into the hot fluid outlet of the heat exchanger. At this time, the temperature sensed by the temperature sensor is the temperature at the hot fluid inlet of the heat exchanger; then, the rear opening is made to face the passage connected to the hot fluid inlet of the heat exchanger through the driving part and the sliding part. At this time, the water pump is started, which will cause a part of the water in the hot fluid outlet of the heat exchanger to enter the transmission cylinder and finally flow into the hot fluid inlet of the heat exchanger. At this time, the temperature sensed by the temperature sensor is the temperature at the hot fluid outlet of the heat exchanger; after completion, the cold fluid inlet temperature of the heat exchanger and the cold fluid outlet temperature of the heat exchanger are measured. During the measurement, the passage connected to the cold fluid inlet of the heat exchanger is opened through the corresponding closing part, and the passage connected to the cold fluid outlet of the heat exchanger is opened through the corresponding closing part. The other operation processes are the same as the above process.

[0051] The beneficial effects of the present invention are as follows: a heat exchanger testing device for a solar thermal collection system and a method of using the same are adopted. During the test, when an abnormality occurs in the temperature sensor, all the openings are closed through the sealing portion, and at the same time, the through hole is opened by the solenoid valve. At this time, the water inside the transmission cylinder will be discharged from the through hole under the action of the water pump. When the water in the transmission cylinder is drained, the water pump stops, and then the sliding portion drives the connecting cover away from the connecting cylinder, thereby opening the connecting opening of the transmission cylinder. At this time, the operator can conveniently replace the temperature sensor. Through the present invention, when testing the heat exchanger of the solar thermal collection system, it can be avoided that the hot fluid scalds the operator during the process of replacing the damaged temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 It is a front cross-sectional view of the present invention;

[0054] Figure 2 It is a front cross-sectional view of the transmission tube in the present invention;

[0055] Figure 3 It is an enlarged view of the limit block in the present invention;

[0056] Figure 4 is an enlarged view of the sleeve and the connecting cover in the present invention;

[0057] Figure 5 It is an enlarged view of the linkage block and the rotating disk in the present invention;

[0058] Figure 6 It is a partial cross-sectional view of the interior of the linkage block in the present invention;

[0059] Figure 7 It is an enlarged view of the second shaft hole in the present invention;

[0060] Figure 8 It is a front view of the turntable in the present invention.

[0061] The markings in the figure are:

[0062] 1. Side plate; 2. Motor; 3. Transmission cylinder; 4. Through port; 5. Sleeve; 6. Connection cover; 7. Connection cylinder; 8. Water pump; 9. Rotating shaft; 10. Push block; 11. Rotating plate; 12. Linkage block; 13. Pull rope; 14. Temperature sensor; 15. Inner sliding hole; 16. Transition block; 17. Side groove; 18. First spring; 19. Second spring; 20. Through hole; 21. Solenoid valve; 22. Closing plate; 23. Limiting groove; 24. Side hole; 25. Limiting block; 26. Third electromagnet; 27. Fourth electromagnet Magnet; 28, slide groove; 29, slider; 30, third spring; 31, fixed plate; 32, rotating groove; 33, rotating block; 34, through groove; 35, through hole; 36, inner groove; 37, annular groove; 38, positioning hole; 39, extension plate; 40, first electromagnet; 41, surface groove; 42, pressure block; 43, second electromagnet; 44, positioning rod; 45, side block; 46, pressure groove; 47, protrusion; 48, through hole; 49, inner hole; 50, fourth spring; 51, side wall annular groove; 52, positioning groove. DETAILED DESCRIPTION

[0063] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0064] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0065] In a first aspect of the present invention, a heat exchanger testing device for a solar thermal collection system is provided. Figure 1 , Figure 2 As shown, the temperature sensor 14 is included, and the heat exchanger testing device also includes:

[0066] The transmission cylinders 3 are symmetrically arranged, the two opposite end surfaces of the transmission cylinders 3 are provided with connection openings, the other end of the transmission cylinder 3 is provided with a through hole 20, the side surface of the transmission cylinder 3 is provided with two through openings 4, and the interior of the transmission cylinder 3 is provided with the temperature sensor 14;

[0067] A closing portion provided at the through opening 4, the closing portion being used to open and close the through opening 4;

[0068] A solenoid valve 21 disposed in the through hole 20;

[0069] A connecting tube 7 disposed between the two transmission tubes 3, and a water pump 8 disposed in the connecting tube 7, wherein one end surface of the connecting tube 7 is provided with a front opening, and the other end surface of the connecting tube 7 is provided with a rear opening, the water inlet of the water pump 8 is communicated with the front opening, and the water outlet of the water pump 8 is communicated with the rear opening;

[0070] A rotating shaft 9 is symmetrically arranged on the side surface of the middle part of the connecting cylinder 7, and one end of the rotating shaft 9 is fixed to the side surface of the connecting cylinder 7;

[0071] A driving unit for driving the rotating shaft 9 to rotate;

[0072] A sleeve 5 sleeved on the transmission cylinder 3, and a connection cover 6 arranged at one end of the sleeve 5, wherein the connection cover 6 is in a truncated cone shape, and the end surface of the connection cover 6 with the largest diameter faces the connection cylinder 7;

[0073] A sliding portion for driving the sleeve 5 to slide along the side surface of the transmission cylinder 3.

[0074] In this embodiment, when testing the heat exchanger, one through port 4 of one transmission cylinder 3 is connected to the hot fluid inlet of the heat exchanger, and the other through port 4 of the transmission cylinder 3 is connected to the cold fluid inlet of the heat exchanger; then one through port 4 of another transmission cylinder 3 is connected to the hot fluid outlet of the heat exchanger, and the other through port 4 of the transmission cylinder 3 is connected to the cold fluid outlet of the heat exchanger. After completion, the sealing part seals the through port 4, and the solenoid valve 21 seals the through hole 20; when testing the hot fluid inlet temperature of the heat exchanger, the sliding part first drives the connecting cover 6 away from the connecting cylinder 7, and then the driving part drives the connecting cylinder 7 to rotate so that the front opening faces the through port 4 connected to the hot fluid inlet of the heat exchanger, and the test is completed. After that, the sliding part is started, so that one of the connecting covers 6 seals the front opening, and the other connecting cover 6 seals the rear opening. At this time, the through port 4 connected to the hot fluid inlet of the heat exchanger is opened through the corresponding sealing part, and the through port 4 connected to the hot fluid outlet of the heat exchanger is opened through the corresponding sealing part. Then the water pump 8 is started, so that a part of the water in the hot fluid inlet of the heat exchanger enters the transmission cylinder 3 and finally flows into the hot fluid outlet of the heat exchanger. At this time, the temperature sensed by the temperature sensor 14 is the temperature at the hot fluid inlet of the heat exchanger; after completion, the through port 4 connected to the hot fluid inlet of the heat exchanger is closed through the corresponding sealing part, and the through port 4 connected to the hot fluid outlet of the heat exchanger remains open. At the same time, the through hole 20 in the transmission cylinder 3 where the through port 4 connected to the hot fluid inlet of the heat exchanger is located is opened by the solenoid valve 21. At this time, under the action of the water pump 8, the residual water in the transmission cylinder 3 will all flow into the hot fluid outlet of the heat exchanger. When the residual water in the transmission cylinder 3 is completely drained, the water pump 8 stops driving, and the solenoid valve 21 closes the through hole 20; then, through the driving part and the sliding part, the rear opening is made to face the through port 4 connected to the hot fluid inlet of the heat exchanger. At this time, the through port 4 connected to the hot fluid inlet of the heat exchanger is opened through the corresponding closing part, and then the water pump 8 is started, which will make a part of the water in the hot fluid outlet of the heat exchanger enter the transmission cylinder 3, and finally Finally, it flows into the inlet of the hot fluid of the heat exchanger. At this time, the temperature sensed by the temperature sensor 14 is the temperature at the outlet of the hot fluid of the heat exchanger. After completion, the through port 4 connected to the hot fluid inlet of the heat exchanger remains open through the corresponding sealing portion, and the through port 4 connected to the hot fluid outlet of the heat exchanger is opened through the corresponding sealing portion. At the same time, the through hole 20 in the transmission cylinder 3 where the through port 4 connected to the hot fluid outlet of the heat exchanger is located is opened by the solenoid valve 21. At this time, under the action of the water pump 8, the remaining water in the transmission cylinder 3 will all flow into the hot fluid inlet of the heat exchanger. When the remaining water in the transmission cylinder 3 is completely drained, the water pump 8 stops driving, and the solenoid valve 21 closes the through hole 48.After completion, the cold fluid inlet temperature of the heat exchanger and the cold fluid outlet temperature of the heat exchanger are measured. During the measurement, first, the through port 4 connected to the cold fluid inlet of the heat exchanger is opened through the corresponding sealing part, and the through port 4 connected to the cold fluid outlet of the heat exchanger is opened through the corresponding sealing part. The other operation process is the same as measuring the hot fluid inlet temperature of the heat exchanger and the hot fluid outlet temperature of the heat exchanger. Through the present invention, when testing the heat exchanger of the solar thermal collection system, it can be avoided that the hot fluid burns the operator during the process of replacing the damaged temperature sensor 14.

[0075] As an implementation method, Figure 1 , Figure 5 , Figure 6 , Figure 8 As shown, the sliding portion includes:

[0076] Side plates 1 are arranged on both sides of the connecting tube 7, and the side plates 1 are fixedly connected to the transmission tube 3 through connecting pieces;

[0077] A rotating disk 11 is arranged on the inner side of the side plate 1, and a fixing plate 31 is arranged between the rotating disk 11 and the connecting tube 7, wherein the fixing plate 31 is fixedly connected to the inner side surface of the side plate 1 through a fixing member, a first shaft hole is arranged in the middle of the rotating disk 11, and a second shaft hole is arranged in the middle of the fixing plate 31, and the rotating shaft 9 passes through the first shaft hole and the second shaft hole;

[0078] The through grooves 34 are arranged on both sides of the second shaft hole, and the push blocks 10 are slidably connected to the through grooves 34. The through grooves 34 penetrate the side surface of the fixed plate 31. The push blocks 10 correspond to the sleeves 5 one by one, and one side of the push blocks 10 is fixedly connected to the corresponding side surface of the sleeve 5.

[0079] A rotating block 33 is provided on the side of the fixed plate 31 facing the rotating disk 11, and the rotating block 33 is rotatably connected to a rotating groove 32 provided on the end surface of the rotating disk 11;

[0080] The end surface of the rotating disk 11 facing the fixed plate 31 is provided with a spiral groove, and the side surface of the push block 10 facing the rotating disk 11 is provided with a thread, and the spiral groove is meshed with the thread; when the rotating disk 11 rotates, the push block 10 is driven to slide along the through groove 34 through the meshing between the spiral groove and the thread;

[0081] The driving unit comprises:

[0082] The motor 2 is fixed to the side plate 1, and the linkage block 12 is arranged in front of the motor 2. The linkage block 12 is arranged in a through hole 35 that passes through the left and right sides of the motor 2. The output shaft of the motor 2 is fixed in the through hole 35. The rotating shaft 9 extends into the through hole 35, and the rotating shaft 9 is rotatably connected with the through hole 35.

[0083] An inner groove 36 is provided on the inner wall of the through hole 35, and a pressing block 42 is slidably connected to the inner groove 36. The side surface of the rotating shaft 9 is provided with an open groove. When a part of the pressing block 42 is located in the open groove, the linkage block 12 drives the rotating shaft 9 to rotate;

[0084] The side surface of the extension plate 39 is fixed to the top of the pressing block 42, and the side wall of the inner groove 36 close to the rotating disk 11 is provided with a surface groove 41, and a part of the extension plate 39 passes through the surface groove 41;

[0085] The rotating disk 11 is provided with an annular groove 37 on the side facing the linkage block 12, and the outer side of the annular groove 37 is provided with a positioning hole 38 corresponding to the extension plate 39, and the front end of the extension plate 39 is rotatably connected to the annular groove 37, and when the front end of the extension plate 39 enters the positioning hole 38, the linkage block 12 drives the rotating disk 11 to rotate;

[0086] A driving assembly for driving the pressing block 42 to slide in the inner groove 36 .

[0087] In this embodiment, when the front end of the extension plate 39 is located in the positioning hole 38 under the action of the driving component, the pressure block 42 is completely located in the inner groove 36. In this way, after the motor 2 is started, the turntable 11 will be driven to rotate through the linkage block 12. After the turntable 11 rotates, since the spiral groove and the thread are engaged, the push block 10 will be driven to slide in the through groove 34; when the motor 2 is required to drive the rotating shaft 9 to rotate, when the inner groove 36 rotates to just above the opening groove, the driving component drives the pressure block 42 to move downward, so that a part of the pressure block 42 enters the opening groove. At this time, the front end of the extension plate 39 will enter the annular groove 37. In this way, after the motor 2 rotates, the rotating shaft 9 will be driven to rotate through the pressure block 42.

[0088] Here, a structure of a drive component is introduced, such as Figure 5 , Figure 6 As shown, the driving assembly includes a first electromagnet 40 disposed at the top of the inner groove 36 and a second electromagnet 43 disposed inside the pressing block 42 .

[0089] When the first electromagnet 40 and the second electromagnet 43 are energized to generate a force of mutual repulsion, the pressing block 42 will move toward the direction of the rotating shaft 9. When the first electromagnet 40 and the second electromagnet 43 are energized to generate a force of mutual attraction, the pressing block 42 will move away from the rotating shaft 9.

[0090] Preferably, the first electromagnet 40 is directly opposite to the second electromagnet 43 .

[0091] As an implementation method, Figure 5 , Figure 6 , Figure 7As shown, the heat exchanger testing device also includes:

[0092] An inner hole 49 provided in the rotating shaft 9, a positioning rod 44 slidably connected to the inner hole 49, and the inner hole 49 is connected to the opening groove;

[0093] A side block 45 is fixed to the side surface of the rear end of the positioning rod 44. The rear end of the positioning rod 44 extends into the second shaft hole. The side wall of the second shaft hole is provided with a side wall annular groove 51. The side wall of the side wall annular groove 51 is provided with a positioning groove 52 near the side wall of the rotating disk 11. When the side block 45 is located in the side wall annular groove 51, the side block 45 is rotatably connected to the side wall annular groove 51. When the side block 45 enters the positioning groove 52, the position of the rotating shaft 9 is fixed.

[0094] A driving member for driving the positioning rod 44 to slide in the inner hole 49 .

[0095] In this embodiment, when a part of the pressure block 42 is located in the open groove, the driving member causes the side block 45 to be located in the side wall annular groove 51. At this time, when the rotating shaft 9 rotates, the side block 45 rotates in the side wall annular groove 51. When the pressure block 42 moves in the direction away from the rotating shaft 9 under the action of the driving assembly, the driving member gradually causes the side block 45 to enter the positioning groove 52. When the pressure block 42 is completely retracted into the inner groove 36, the side block 45 completely enters the positioning groove 52. At this time, the position of the rotating shaft 9 is fixed and will not shake when subjected to external interference.

[0096] As an implementation method, Figure 6 As shown, the driving member includes:

[0097] A fourth spring 50 having one end fixedly connected to the front end of the positioning rod 44, and the other end of the fourth spring 50 fixed to the front end of the inner hole 49;

[0098] A convex block 47, the convex block 47 is provided on the side of the pressing block 42 facing the rotating disk 11, and the convex block 47 is in an arc shape;

[0099] The positioning rod 44 is provided with a pressing groove 46 penetrating its side surface. When the pressing block 42 passes through the opening groove and enters the pressing groove 46, the protrusion 47 contacts the edge of the pressing groove 46 close to the turntable 11 and drives the positioning rod 44 to move in a direction away from the motor 2.

[0100] In this embodiment, when the pressure block 42 is completely located in the inner groove 36, under the action of the fourth spring 50, the positioning rod 44 moves toward the direction of the motor 2, so that the side block 45 enters the positioning groove 52; in the process of the pressure block 42 passing through the opening groove and entering the pressure groove 46, the protrusion 47 contacts the edge of the pressure groove 46 close to the turntable 11, and drives the positioning rod 44 to move in the direction away from the motor 2, so that the side block 45 enters the side wall annular groove 51.

[0101] As an implementation method, Figure 1 , Figure 2 , Figure 4 As shown, the closing portion comprises:

[0102] A sealing plate 22, an inner sliding hole 15 is provided in the transmission cylinder 3 between the through port 4 and the connection opening, the sealing plate 22 is slidably connected with the inner sliding hole 15, and a side groove 17 penetrating the outer side of the transmission cylinder 3 is provided on the side wall of the inner sliding hole 15;

[0103] A transition block 16 slidably connected to the sliding hole, a first spring 18 having one end fixedly connected to the top surface of the transition block 16, and the other end of the first spring 18 fixed to the bottom surface of the sealing plate 22;

[0104] A second spring 19 having one end fixedly connected to the bottom surface of the transition block 16, and the other end of the second spring 19 fixed to the bottom of the inner sliding hole 15;

[0105] A drawstring 13 having one end fixed to the transition block 16, the drawstring 13 passing through the side groove 17;

[0106] The outer side surface of the rotating disk 11 is provided with a first rope groove and a second rope groove;

[0107] In one of the transmission cylinders 3, the other end of one of the pull ropes 13 is fixed in the first rope groove of one of the rotating disks 11, and the other end of the other pull rope 13 is fixed in the first rope groove of the other rotating disk 11;

[0108] In another transmission cylinder 3, the other end of one of the pull ropes 13 is fixed in the second rope groove of one of the rotating disks 11, and the other end of another pull rope 13 is fixed in the second rope groove of another rotating disk 11;

[0109] When the turntable 11 rotates, the transition blocks 16 in different transmission cylinders 3 move closer to each other or farther away from each other;

[0110] A fixing assembly disposed in the inner sliding hole 15, the fixing assembly being used to fix the position of the sealing plate 22;

[0111] The heat exchanger testing device also includes a slide groove 28 provided on the side surface of the sleeve 5, a slider 29 slidably connected to the slide groove 28, and a third spring 30 with one end fixed to the side surface of the slider 29, the slider 29 is fixed to the inner side surface of the connecting cover 6, and the other end of the third spring 30 is fixed to the top of the slide groove 28.

[0112] In this embodiment, the elastic modulus of the second spring 19 is greater than the elastic modulus of the first spring 18. When it is necessary to make the connecting cover 6 seal the connecting tube 7, during the rotation of the turntable 11, although the pull rope 13 will pull the transition block 16 to move in the direction of the sleeve 5, the first spring 18 is still in a compressed state, and the sealing plate 22 still closes the through port 4. After the sealing cover seals the connecting tube 7, the state of the sealing plate 22 remains unchanged. When it is necessary to open a certain through port 4, the fixing components in other through ports 4 fix the position of the sealing plate 22. Then, when the turntable 11 rotates, the sealing plate 22 in the through port 4 moves in the direction of the transition block 16 toward the connecting tube 7. The first spring 18 will cause the sealing plate 22 to move into the inner sliding hole 15, thereby opening the through port 4. When it is necessary to close the opened through port 4, the turntable 11 moves in the direction of the through port 4. In this way, under the elastic force of the second spring 19, the sealing plate 22 will close the through port 4.

[0113] As an implementation method, Figure 3 As shown, the positioning assembly includes a limit block 25 and a linkage member. The side wall of the inner sliding hole 15 is provided with a side hole 24. The limit block 25 is slidably connected to the side hole 24. The side of the sealing plate 22 is provided with a limit groove 23 corresponding to the limit block 25. The linkage member is used to drive the limit block 25 to slide in the side hole 24.

[0114] Here, when the linkage member enables the limit block 25 to enter the limit groove 23 , the position of the sealing plate 22 is fixed, and when the linkage member enables the limit block 25 to completely enter the side hole 24 , the sealing plate 22 can move in the inner sliding hole 15 .

[0115] Here, a linkage structure is introduced, such as Figure 3 As shown, the linkage member includes a third electromagnet 26 fixed in the limit block 25 and a fourth electromagnet 27 fixed at the bottom of the side hole 24 .

[0116] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0117] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat exchanger testing device for a solar thermal collection system, comprising a temperature sensor (14), characterized in that: The heat exchanger testing device also includes: A transmission cylinder (3) is symmetrically arranged, the opposite end surfaces of the two transmission cylinders (3) are provided with a connection opening, the other end of the transmission cylinder (3) is provided with a through hole (20), the side surface of the transmission cylinder (3) is provided with two through openings (4), and the interior of the transmission cylinder (3) is provided with the temperature sensor (14); A closing portion provided at the through opening (4), the closing portion being used to open and close the through opening (4); a solenoid valve (21) disposed in the through hole (20); A connecting cylinder (7) disposed between two transmission cylinders (3), and a water pump (8) disposed in the connecting cylinder (7), wherein one end surface of the connecting cylinder (7) is provided with a front opening, and the other end surface of the connecting cylinder (7) is provided with a rear opening, the water inlet of the water pump (8) is communicated with the front opening, and the water outlet of the water pump (8) is communicated with the rear opening; A rotating shaft (9) is symmetrically arranged on the side surface of the middle part of the connecting cylinder (7), and one end of the rotating shaft (9) is fixed to the side surface of the connecting cylinder (7); A driving part for driving the rotating shaft (9) to rotate; A sleeve (5) sleeved on the transmission cylinder (3), and a connecting cover (6) arranged at one end of the sleeve (5), wherein the connecting cover (6) is in a truncated cone shape, and the end surface of the connecting cover (6) with the largest diameter faces the connecting cylinder (7); A sliding portion used for driving a sleeve (5) to slide along the side surface of a transmission cylinder (3).

2. A heat exchanger testing device for a solar thermal collection system according to claim 1, characterized in that: The sliding portion comprises: Side plates (1) are arranged on both sides of the connecting cylinder (7), and the side plates (1) are fixedly connected to the transmission cylinder (3) via a connecting piece; A rotating disk (11) is arranged on the inner side of the side plate (1), and a fixing plate (31) is arranged between the rotating disk (11) and the connecting tube (7), wherein the fixing plate (31) is fixedly connected to the inner side surface of the side plate (1) via a fixing member, a first shaft hole is arranged in the middle of the rotating disk (11), a second shaft hole is arranged in the middle of the fixing plate (31), and the rotating shaft (9) passes through the first shaft hole and the second shaft hole; A through groove (34) is provided on both sides of the second shaft hole, and a push block (10) is slidably connected to the through groove (34), the through groove (34) passes through the side surface of the fixed plate (31), the push block (10) corresponds to the sleeve (5) one by one, and one side of the push block (10) is fixedly connected to the corresponding side surface of the sleeve (5); A rotating block (33), the rotating block (33) is provided on the side of the fixed plate (31) facing the rotating disk (11), and the rotating block (33) is rotatably connected to a rotating groove (32) provided on the end surface of the rotating disk (11); The end surface of the rotating disk (11) facing the fixed plate (31) is provided with a spiral groove, and the side surface of the push block (10) facing the rotating disk (11) is provided with a thread, and the spiral groove is meshed with the thread; when the rotating disk (11) rotates, the push block (10) is driven to slide along the through groove (34) through the meshing between the spiral groove and the thread; The driving unit comprises: A motor (2) fixed to the side plate (1), a linkage block (12) arranged in front of the motor (2), the linkage block (12) being arranged in a through hole (35) penetrating the left and right sides thereof, the output shaft of the motor (2) being fixed in the through hole (35), the rotating shaft (9) extending into the through hole (35), and the rotating shaft (9) being rotatably connected to the through hole (35); An inner groove (36) is arranged on the inner wall of the through hole (35), a pressing block (42) is slidably connected to the inner groove (36), and an open groove is arranged on the side surface of the rotating shaft (9). When a part of the pressing block (42) is located in the open groove, the linkage block (12) drives the rotating shaft (9) to rotate; An extension plate (39) whose side surface is fixed to the top of the pressing block (42); a surface groove (41) is provided on the side wall of the inner groove (36) close to the rotating disk (11); a portion of the extension plate (39) passes through the surface groove (41); The side surface of the rotating disk (11) facing the linkage block (12) is provided with an annular groove (37), and the outer side surface of the annular groove (37) is provided with a positioning hole (38) corresponding to the extension plate (39), and the front end of the extension plate (39) is rotatably connected to the annular groove (37), and when the front end of the extension plate (39) enters the positioning hole (38), the linkage block (12) drives the rotating disk (11) to rotate; A driving assembly is used for driving a pressing block (42) to slide in an inner groove (36).

3. A heat exchanger testing device for a solar thermal collection system according to claim 2, characterized in that: The driving assembly comprises a first electromagnet (40) arranged at the top of the inner groove (36) and a second electromagnet (43) arranged inside the pressing block (42).

4. A heat exchanger testing device for a solar thermal collection system according to claim 3, characterized in that: The first electromagnet (40) is directly opposite to the second electromagnet (43).

5. A heat exchanger testing device for a solar thermal collection system according to claim 4, characterized in that: The heat exchanger testing device also includes: An inner hole (49) is provided in the rotating shaft (9), and a positioning rod (44) is slidably connected to the inner hole (49), wherein the inner hole (49) is communicated with the opening groove; A side block (45) is fixed to the side surface of the rear end of the positioning rod (44), the rear end of the positioning rod (44) extends into the second shaft hole, the side wall of the second shaft hole is provided with a side wall annular groove (51), the side wall of the side wall annular groove (51) close to the side wall of the rotating disk (11) is provided with a positioning groove (52), when the side block (45) is located in the side wall annular groove (51), the side block (45) is rotatably connected to the side wall annular groove (51); when the side block (45) enters the positioning groove (52), the position of the rotating shaft (9) is fixed; A driving member for driving the positioning rod (44) to slide in the inner hole (49).

6. A heat exchanger testing device for a solar thermal collection system according to claim 5, characterized in that: The driving member comprises: A fourth spring (50) having one end fixedly connected to the front end of the positioning rod (44), and the other end of the fourth spring (50) fixed to the front end of the inner hole (49); A convex block (47), the convex block (47) is provided on the side of the pressing block (42) facing the rotating disk (11), and the convex block (47) is in an arc shape; The positioning rod (44) is provided with a pressing groove (46) penetrating its side surface. When the pressing block (42) passes through the opening groove and enters the pressing groove (46), the protrusion (47) contacts the edge of the pressing groove (46) close to the rotating disk (11) and drives the positioning rod (44) to move in a direction away from the motor (2).

7. A heat exchanger testing device for a solar thermal collection system according to claim 6, characterized in that: The closing portion comprises: A sealing plate (22), an inner sliding hole (15) is provided in the transmission cylinder (3) between the through port (4) and the connection opening, the sealing plate (22) is slidably connected to the inner sliding hole (15), and a side groove (17) penetrating the outer side surface of the transmission cylinder (3) is provided on the side wall of the inner sliding hole (15); A transition block (16) slidably connected to the sliding hole, a first spring (18) one end of which is fixedly connected to the top surface of the transition block (16), and the other end of the first spring (18) is fixed to the bottom surface of the sealing plate (22); A second spring (19) having one end fixedly connected to the bottom surface of the transition block (16), and the other end of the second spring (19) fixed to the bottom of the inner sliding hole (15); A drawstring (13) with one end fixed to the transition block (16), the drawstring (13) passing through the side groove (17); The outer side surface of the rotating disk (11) is provided with a first rope groove and a second rope groove; In one of the transmission cylinders (3), the other end of one of the pull ropes (13) is fixed in the first rope groove of one of the rotating disks (11), and the other end of the other pull rope (13) is fixed in the first rope groove of the other rotating disk (11); In another transmission cylinder (3), the other end of one of the pull ropes (13) is fixed in the second rope groove of one of the rotating disks (11), and the other end of another pull rope (13) is fixed in the second rope groove of another rotating disk (11); When the rotating disk (11) rotates, the transition blocks (16) in different transmission cylinders (3) move closer to each other or farther away from each other; A fixing component disposed in the inner sliding hole (15), the fixing component being used to fix the position of the sealing plate (22); The heat exchanger testing device also includes a slide groove (28) arranged on the side surface of the sleeve (5), a slider (29) slidably connected to the slide groove (28), and a third spring (30) with one end fixed to the side surface of the slider (29), the slider (29) is fixed to the inner side surface of the connecting cover (6), and the other end of the third spring (30) is fixed to the top of the slide groove (28).

8. A heat exchanger testing device for a solar thermal collection system according to claim 7, characterized in that: The positioning assembly comprises a limit block (25) and a linkage member, the side wall of the inner sliding hole (15) is provided with a side hole (24), the limit block (25) is slidably connected to the side hole (24), the side surface of the sealing plate (22) is provided with a limit groove (23) corresponding to the limit block (25), and the linkage member is used to drive the limit block (25) to slide in the side hole (24).

9. A heat exchanger testing device for a solar thermal collection system according to claim 8, characterized in that: The linkage member comprises a third electromagnet (26) fixed in the limit block (25) and a fourth electromagnet (27) fixed at the bottom of the side hole (24).

10. A method for using a heat exchanger testing device for a solar thermal collection system according to any one of claims 1 to 9, characterized in that: The invention comprises the following steps: when testing the heat exchanger, one port (4) of one transmission cylinder (3) is connected to the hot fluid inlet of the heat exchanger, and the other port (4) of the transmission cylinder (3) is connected to the cold fluid inlet of the heat exchanger; then one port (4) of the other transmission cylinder (3) is connected to the hot fluid outlet of the heat exchanger, and the other port (4) of the transmission cylinder (3) is connected to the cold fluid outlet of the heat exchanger. After completion, the sealing part seals the port (4) and the electromagnetic valve (21) seals the through hole (20); when testing the hot fluid inlet temperature of the heat exchanger, first the sliding part drives the connecting cover (6) away from the connecting cylinder (7), and then the driving part drives the connecting cylinder (7) to rotate so that the front opening faces the port (4) connected to the hot fluid inlet of the heat exchanger. After completion, the sliding part is started so that one of the connecting covers (6) seals the front opening and the other connecting cover (6) seals the rear opening. At this time, the port (4) connected to the hot fluid inlet of the heat exchanger is opened through the corresponding sealing part and the hot fluid outlet of the heat exchanger is opened. The connected port (4) is opened through the corresponding sealing part, and then the water pump (8) is started, so that part of the water in the hot fluid inlet of the heat exchanger enters into the transmission tube (3) and finally flows into the hot fluid outlet of the heat exchanger. At this time, the temperature sensed by the temperature sensor (14) is the temperature at the hot fluid inlet of the heat exchanger; then, through the driving part and the sliding part, the rear opening is directed toward the port (4) connected to the hot fluid inlet of the heat exchanger. At this time, the water pump (8) is started, so that part of the water in the hot fluid outlet of the heat exchanger enters into the transmission tube (3) and finally flows into the hot fluid inlet of the heat exchanger. At this time, the temperature sensed by the temperature sensor (14) is the temperature at the hot fluid outlet of the heat exchanger; after completion, the cold fluid inlet temperature and the cold fluid outlet temperature of the heat exchanger are measured. During the measurement, the port (4) connected to the cold fluid inlet of the heat exchanger is opened through the corresponding sealing part, and the port (4) connected to the cold fluid outlet of the heat exchanger is opened through the corresponding sealing part. The other operation processes are the same as the above process.

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