Device for detecting wettability of filler of cross-flow cooling tower

Abstract

The invention relates to the technical field of cooling towers, and discloses a transverse flow type cooling tower filler wetting rate detection device which comprises a lifting transverse moving mechanism, a supporting plate and a detection mechanism, the detection mechanism is installed on the supporting plate, the supporting plate is installed on the lifting transverse moving mechanism, and the detection mechanism comprises a driving assembly and a slotting tool assembly. The slotting tool assembly comprises a plurality of slotting tool bodies arranged side by side in the arrangement direction of the packing sheets, the driving assembly is used for driving the slotting tool assembly to be inserted into gaps between the packing sheets, pressure sensors are embedded in the tops of the slotting tool bodies, and detection units used for detecting the boundary between a dry area and a wet area are embedded in the front ends of the slotting tool bodies; and the display unit is used for feeding back a detection result. The problems of high labor intensity, long detection time and low precision of a filler wettability detection mode in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of cooling towers, in particular to a device for detecting the wetness rate of fillers in a cross-flow cooling tower. Background Art

[0002] Cigarette factories generate a lot of heat during the production process. If the heat is not dissipated in time, it may cause equipment to overheat, affecting production efficiency and product quality. Cigarette factories use cross-flow cooling towers to reduce the temperature of cooling water and provide a stable operating environment for these equipment.

[0003] The status of existing technology: The operating efficiency of cross-flow cooling towers is carried out around improving heat exchange efficiency, reducing energy consumption, optimizing structural design, etc., and there is little mention of the detection device for the wetness rate of the filler during the operation of the current cooling tower. At present, the wetness of the cooling tower filler is determined by simple manual visual inspection through the gaps between the filler pieces because the filler is on both sides of the cooling tower and is wrapped by the cooling tower box (the wetness rate of a single filler piece = the wet area of the filler piece / the surface area of the filler piece). This judgment method is labor-intensive, takes a long time to detect, and has low accuracy, which affects the accurate judgment of the operating status of the cooling tower. For example, it is impossible to determine whether the cooling tower is operating efficiently based on the high or low wetness rate of the filler, which will cause energy waste in the long run and have a negative impact on the dual carbon work of the cigarette factory. Summary of the Invention

[0004] The purpose of the present invention is to provide a cross-flow cooling tower filler wetness rate detection device to solve the problems of high labor intensity, long detection time and low accuracy in the prior art filler wetness rate detection method.

[0005] The present invention solves the above-mentioned technical problems through the following technical means: a cross-flow cooling tower filler moisture content detection device includes a lifting and lateral movement mechanism, a support plate and a detection mechanism, the detection mechanism is installed on the support plate, and the support plate is installed on the lifting and lateral movement mechanism, the detection mechanism includes a drive assembly and a blade assembly, the blade assembly includes a plurality of blade bodies arranged side by side along the arrangement direction of the filler sheets, the drive assembly is used to drive the blade assembly to insert into the gaps between the filler sheets, a pressure sensor is embedded in the top of the blade body, and a detection unit for detecting the boundary line between the dry area and the wet area is embedded in the front end of the blade body; and it also includes a display unit for feedback of the detection results.

[0006] Furthermore, the driving assembly includes a telescopic member and a sliding seat, a dovetail block is provided on the support plate, a dovetail groove matching the dovetail block is provided at the bottom of the sliding seat, the blade assembly is installed on one side of the sliding seat, and the telescopic end of the telescopic member is fixedly connected to the other side of the sliding seat.

[0007] Furthermore, the sliding seat is provided with a fixed plate under each insert blade body, the insert blade body is rotatably mounted on the corresponding fixed plate, the rear end of each insert blade body is provided with an arc-shaped rack, and the sliding seat is provided with a swing mechanism, the swing mechanism includes a spur rack, the spur rack is slidably mounted on the sliding seat, the length direction of the spur rack is parallel to the arrangement direction of the filler sheets, each of the arc-shaped racks is engaged with the spur rack for transmission, and the sliding seat is provided with a power mechanism for driving the spur rack to move along the arrangement direction of the filler sheets.

[0008] Furthermore, a round rod is fixedly provided in the middle of the fixing plate, and an arc-shaped groove is opened at the rear end. The center of the arc-shaped groove is located on the axis of the round rod. The front end of the inserting knife body is rotatably mounted on the rotating shaft, and an auxiliary support member is provided at the rear end. The bottom end of the auxiliary support member is slidably supported on the arc-shaped groove.

[0009] Furthermore, the power mechanism includes a first motor, a rotating shaft and a first cam, the first motor is mounted on a sliding seat, the rotating shaft is rotatably mounted on the sliding seat and one end of the rotating shaft is fixedly connected to the output end of the first motor, the axis of the rotating shaft is parallel to the length direction of the insert body, the first cam is fixedly sleeved on the rotating shaft, one end of the spur rack contacts the edge of the first cam, a first elastic member is provided between the spur rack and the sliding seat, the first elastic member causes the spur rack to have a tendency to approach the first cam.

[0010] Furthermore, an air blowing mechanism is provided on the sliding seat, and the air blowing mechanism is connected to the end of the spur rack away from the first cam. The air blowing mechanism includes a push plate, an air storage bag and a U-shaped frame. The push plate is slidably arranged at the opening of the U-shaped frame, the U-shaped frame is mounted on the sliding seat, and the air storage bag is mounted in the U-shaped frame. The side walls of the air storage bag are respectively fixedly connected to one side of the push plate and the inner wall of the U-shaped frame, and the end of the spur rack away from the first cam is fixedly connected to the other side of the push plate.

[0011] The sliding seat is provided with an air blowing main pipe, and each of the insert blade bodies is provided with an air blowing channel. A plurality of air blowing branches are provided at the edge of the pressure sensor on the top of the insert blade body. One end of each of the air blowing branches is connected to the air blowing channel, and the other end is provided with a nozzle. A first hose is provided between each of the insert blade bodies and the air blowing main pipe, and the air blowing channel is connected to the air blowing main pipe through the first hose, and the air blowing main pipe is connected to the air storage bag.

[0012] Furthermore, a cleaning mechanism is provided on the sliding seat, and the cleaning mechanism includes a fixed rod and a micro air compressor, the length direction of the fixed rod is parallel to the arrangement direction of the filler sheets, and an air storage chamber and an air release chamber are provided inside the fixed rod at intervals, and the air storage chamber and the air release chamber both extend along the length direction of the fixed rod, and the micro air compressor is mounted on the sliding seat, one end of the air storage chamber is connected to the micro air compressor, and a control mechanism is provided between the other end and the air release chamber, and the control mechanism can release the compressed air in the air storage chamber to the air release chamber, and a second hose is provided between each of the insert blade bodies and the fixed rod, and a cleaning channel is opened inside the insert blade body, one end of the cleaning channel passes through the front end of the insert blade body, and the other end is connected to the air release chamber through the second hose.

[0013] The cam is fixedly mounted on the rotating shaft, and one end of the control rod is in contact with the edge of the second cam, and the other end passes through the cavity and the opening in sequence and extends into the air storage cavity. The end of the control rod located in the air storage cavity is fixedly provided with a valve plate, and the valve plate is used to seal the opening. The diameters of the opening, the valve plate and the air storage cavity gradually increase. A sealing plate is fixedly mounted on the control rod, and the sealing plate is located in the cavity and in sliding sealing contact with the side wall of the cavity. A second elastic member is provided between the control rod and the sliding seat, and the second elastic member enables the valve plate to have a tendency to seal the opening. When the control rod moves in a direction close to the air storage cavity, the air storage cavity can be connected to the air release cavity through the opening, the cavity and the through hole.

[0014] Furthermore, a ring-shaped fill light is provided at the front end of each of the blade bodies.

[0015] Furthermore, a battery is provided on the blade body, and the battery supplies power to the fill light, the pressure sensor, the humidity sensor and the micro camera.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present application inserts the inserting blade into the gap between the packing sheets. The detection unit can detect the boundary between the wet area and the dry area of the packing sheet in the gap. Since the cooling water flows almost vertically downward on the packing sheet, the boundary can be regarded as the overall boundary between the dry area and the wet area of the packing sheet. The wetness ratio of the packing sheet can be calculated based on the result displayed by the display unit. Compared with manual visual inspection, the detection efficiency and detection accuracy are high.

[0018] 2. The lifting and lateral movement mechanism can drive the detection mechanism to complete the detection of all the filler pieces in sequence at a certain horizontal height, so that the overall wetness rate of the filler can be obtained. By repeating the above detection method at different heights in the vertical direction, the detection accuracy can be further improved.

[0019] 3. By setting up a pressure sensor, when the test result shows that the wettability of the filler sheet is insufficient, the test data of the pressure sensor can be used to determine the cause of the insufficient wettability. If the wettability is low and the water flow resistance is high, the filler is clogged. If the water flow resistance is uniform but the overall wettability is low, the water supply is insufficient, which makes it convenient for staff to maintain the filler in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0021] Figure 1 The present invention is a schematic diagram of the installation structure of a cross-flow cooling tower filler wetness detection device on a cooling tower.

[0022] Figure 2 yes Figure 1 Schematic diagram of the local enlarged structure.

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure from another perspective.

[0024] Figure 4 The present invention is a schematic structural diagram of a device for detecting the wetness rate of a cross-flow cooling tower filler.

[0025] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Figure 6 It is a schematic diagram of the connection structure between the detection mechanism and the support plate in the present invention.

[0027] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0028] Figure 8 It is a structural diagram of the detection mechanism in the present invention.

[0029] Figure 9 It is a partial structural diagram of the detection mechanism in the present invention.

[0030] Figure 10 yes Figure 9 Schematic diagram of the enlarged structure at point C in the middle.

[0031] Figure 11 It is a schematic diagram of the split structure of the insert blade body and the fixing plate in the present invention.

[0032] Figure 12 It is a schematic cross-sectional structural diagram of the insert blade body in the present invention.

[0033] Figure 13 It is a schematic diagram of the cross-sectional structure of the fixing rod in the present invention.

[0034] Figure 14 yes Figure 13 Schematic diagram of the enlarged structure at point D in the middle.

[0035] In the above drawings: 1. cooling tower; 2. filler sheet; 3. blade body; 5. humidity sensor; 6. micro camera; 7. pressure sensor; 8. air blowing branch pipe; 9. nozzle; 10. first hose; 11. second hose; 12. air blowing main pipe; 13. cleaning channel; 14. sliding seat; 15. dovetail block; 16. support plate; 17. telescopic member; 18. straight rack; 19. arc rack; 20. first elastic member; 21. limit plate; 22. large head; 23. first cam; 24. first motor; 25. rotating shaft; 26. second cam; 27. round rod segment; 28 , push plate; 29, air storage bag; 30, U-shaped frame; 31, micro air compressor; 32, fixing rod; 33, support rod; 34, air storage chamber; 35, air release chamber; 36, cavity; 37, opening; 38, through hole; 39, control rod; 40, valve plate; 41, sealing plate; 42, second elastic member; 43, fixing plate; 44, round rod; 45, arc groove; 46, ball; 47, second motor; 48, mounting plate; 49, first screw rod; 50, first guide rod; 51, connecting plate; 52, support ear; 53, second screw rod; 54, second guide rod; 55, third motor. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and are only schematic diagrams, not actual drawings. They should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the dimensions of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the figures.

[0037] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the figures. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] In the related art, after the cross-flow cooling tower 1 is assembled, its packing sheets 2 are arranged vertically and closely, fixed at equal distances by a pipe-through bracket, and each sheet is spaced 20 mm apart. The packing as a whole includes several packing sheets 2, and several packing sheets 2 are arranged along the length direction of the cooling tower 1. Each packing sheet 2 is provided with corrugated depressions and protrusions to increase the surface area of the packing sheet 2. The depressions and protrusions of two adjacent packing sheets 2 are staggered to form a gap for natural wind from the outside to blow in; the above are all existing technologies.

[0039] like Figure 1-14 As shown, an embodiment of the present invention provides a device for detecting the wetness of packing in a crossflow cooling tower 1. The device comprises a lifting and traversing mechanism, a support plate 16, and a detection mechanism. The detection mechanism is mounted on the support plate 16, which is in turn mounted on the lifting and traversing mechanism. The detection mechanism comprises a drive assembly and a blade assembly. The blade assembly comprises a plurality of blade bodies 3 arranged side by side along the arrangement direction of the packing sheets 2. The drive assembly is used to drive the blade assembly into the gaps between the packing sheets 2. A pressure sensor 7 is embedded in the top of the blade body 3. The pressure sensor 7 is used to detect water flow resistance. If the measured wetness value is too low, the data measured by the pressure sensor 7 can help personnel determine the cause of the insufficient wetness. A detection unit for detecting the boundary between the dry and wet areas is embedded in the front end of the blade body 3. A display unit is also included to provide feedback on the detection results.

[0040] In this embodiment, when the blade body 3 is inserted into the gap between the packing sheets 2 and passes through the dry zone to the wet zone, cooling water drips onto the top of the blade body 3, and a pressure sensor 7 can detect the magnitude of the water flow resistance. The detection unit includes a micro-camera 6 and a humidity sensor 5. The front end of the blade body 3 is shaped like a quadrangular pyramid tip. This not only facilitates the smooth insertion of the blade body 3 into the gap between the packing sheets 2, but also facilitates the installation of other structural components. Two micro-cameras 6 are embedded in the left and right sides of the tip of the blade body 3. Humidity sensors 5 are arranged along both sides of the blade body 3, with several sensors spaced along the length of each side. In this embodiment, one humidity sensor 5 is located at the front and rear ends of the blade body 3. By comparing the data from the two humidity sensors 5, the boundary between the dry and wet zones can be detected. Using the micro-camera 6 and humidity sensors 5 to detect the boundary between the dry and wet zones of the packing is a conventional technique in the art and will not be elaborated upon here. The display unit includes a controller and a display screen. The micro-camera 6, humidity sensor 5, and pressure sensor 7 are all electrically connected to the controller. The controller is used to capture images captured by the micro-camera 6 and data detected by the humidity sensor 5, ultimately displaying the resulting moisture content and image on the display screen. The detection results are fed back through the display unit. This is a conventional technique in the art and will not be elaborated on here. Each blade body 3 is equipped with an annular fill light at the front end. The blade body 3 is equipped with a battery that powers the fill light, pressure sensor 7, humidity sensor 5, and micro-camera 6. In this embodiment, the annular fill light and battery are not shown in the figure. The annular fill light helps to enhance the clarity of images captured by the micro-camera 6.

[0041] Currently, if the packing wetness is insufficient, there are usually three reasons: 1. The water distribution pan is clogged or tilted, resulting in uneven water distribution; 2. Scale forms between the gaps in the packing sheets 2, causing packing blockage; 3. Insufficient cooling water supply. In the above embodiment, by providing a pressure sensor 7, if insufficient wetness is detected in the packing sheets 2, the detection data from the pressure sensor 7 can help personnel determine the specific cause of the insufficient wetness. If the wetness is low and the water flow resistance is high, then the packing is clogged; if the water flow resistance is uniform but the overall wetness is low, then the water supply is insufficient or the water distribution is uneven, thus facilitating timely and precise maintenance of the packing.

[0042] In the above embodiment, the humidity sensor 5 is a waterproof humidity sensor 5 or a waterproof housing is installed on the surface of the humidity sensor 5, and a waterproof housing is also installed on the outside of the micro camera 6, so that after the inserter body 3 detects a gap, it can quickly perform normal detection work on the next gap that needs to be detected, thereby improving detection efficiency.

[0043] In the above embodiment, the lifting and transverse movement mechanism includes a lifting component and a transverse movement component, wherein the lifting components are two and symmetrically arranged at both ends of the transverse movement component, the lifting component includes a mounting plate 48, a second motor 47, a first screw rod 49 and a first guide rod 50, there are two mounting plates 48 and they are fixedly installed at the top and bottom of the cooling tower 1 by bolts respectively, the first screw rod 49 and the first guide rod 50 are vertically installed between the two mounting plates 48 respectively, the two ends of the first screw rod 49 are respectively rotatably connected to the two mounting plates 48 by bearings, the two ends of the first guide rod 50 are respectively fixedly connected to the two mounting plates 48, the second motor 47 is fixedly installed at the bottom of the lower mounting plate 48 by bolts, and the bottom end of the first screw rod 49 passes through the mounting plate 48 and is fixedly connected to the output end of the second motor 47. The traverse assembly includes a third motor 55, a connecting plate 51, a second screw rod 53, and a second guide rod 54. There are two connecting plates 51, corresponding one to each of the two lifting assemblies. Two lugs 52 are provided on the outside of the connecting plates 51. One lug 52 defines a threaded hole for the first screw rod 49 to pass through, and the other lug 52 defines a through hole 38 for the first guide rod 50 to pass through. The second screw rod 53 and the second guide rod 54 are horizontally mounted between the two connecting plates 51. The axes of the second screw rod 53 and the second guide rod 54 are parallel to the arrangement direction of the filler sheets 2. Both ends of the second screw rod 53 are rotatably mounted on the connecting plates 51. The ends of the second guide rod 54 are fixedly connected to the two connecting plates 51. The third motor 55 is fixedly mounted on the outside of one of the connecting plates 51 by bolts. One end of the second screw rod 53 passes through the connecting plate 51 and is fixedly connected to the output end of the third motor 55. The support plate 16 defines a threaded hole for the second screw rod 53 to pass through, as well as a through hole 38 for the second guide rod 54 to pass through. The simultaneous rotation of the two second motors 47 can drive the lateral movement assembly to rise and fall in the vertical direction. The provision of two lifting assemblies provides good support for the lateral movement assembly and smooth lifting. The rotation of the third motor 55 drives the support plate 16 to move axially along the second screw rod 53, thereby enabling the detection mechanism provided on the support plate 16 to detect the filler sheets 2 at different heights. At the same time, all the filler sheets 2 can be detected in sequence at a certain horizontal height along the arrangement direction of the filler sheets 2, which is convenient to use and highly practical.

[0044] Cooling water flows downward from the water distribution tray to the packing sheet 2. Usually, the middle part of the packing sheet 2 is the wet area, and the two sides are dry areas, and the areas of the dry areas on both sides are theoretically close. Therefore, by measuring the dry area on one side of the packing sheet 2, the wet area can be calculated, thereby obtaining the wettability of the packing sheet 2. In this embodiment, the wettability detection device of the present application can be set on both sides of the entire packing, so that the wettability of the packing sheet 2 can be measured more accurately.

[0045] The driving assembly includes a telescopic member 17 and a sliding seat 14. A dovetail block 15 is provided on the support plate 16. A dovetail groove matching the dovetail block 15 is provided at the bottom of the sliding seat 14. The inserting knife assembly is installed on one side of the sliding seat 14. The telescopic end of the telescopic member 17 is fixedly connected to the other side of the sliding seat 14. In this embodiment, the telescopic member 17 adopts an electric telescopic rod. By extending and retracting the telescopic member 17, the inserting knife body 3 can be inserted into or out of the gap of the filler sheet 2.

[0046] The sliding seat 14 is provided with a fixed plate 43 under each inserting blade body 3, one end of the fixed plate 43 is fixedly connected to the side wall of the sliding seat 14, and the inserting blade body 3 is rotatably mounted on the corresponding fixed plate 43. The rear end of each inserting blade body 3 is provided with an arc-shaped rack 19, and the sliding seat 14 is provided with a swing mechanism. The swing mechanism includes a straight rack 18, which is slidably mounted on the sliding seat 14. The length direction of the straight rack 18 is parallel to the arrangement direction of the filler sheets 2. Each arc-shaped rack 19 is engaged with the straight rack 18 for transmission. The sliding seat 14 is provided with a power mechanism for driving the straight rack 18 to move along the arrangement direction of the filler sheets 2, so that all the inserting blade bodies 3 can swing left and right in the horizontal direction at the same time.

[0047] A round rod 44 is vertically fixed to the middle of the fixed plate 43, and an arc-shaped groove 45 is formed at the rear end. The center of the arc-shaped groove 45 is located on the axis of the round rod 44. The front end bottom of the inserting knife body 3 is rotatably mounted on the rotating shaft 25, and an auxiliary support member is provided at the bottom of the rear end. The bottom end of the auxiliary support member is slidably supported on the arc-shaped groove 45. In this embodiment, the auxiliary support frame is a ball 46. Such a structural design provides good support for the inserting knife body 3. When the straight rack 18 and the arc-shaped rack 19 are engaged for transmission, the inserting knife body 3 takes the axis of the round rod 44 as the rotation axis 25 line, thereby being able to rotate in the horizontal direction. The round rod 44 is arranged at the front end of the fixed plate 43, so that the front end of the inserting knife body 3 has a smaller swing amplitude, which can adapt to the narrow gap of the filler sheet 2.

[0048] The power mechanism includes a first motor 24, a rotating shaft 25 and a first cam 23. The first motor 24 is fixedly mounted on the sliding seat 14 by bolts. The rotating shaft 25 is rotatably mounted on the sliding seat 14 and one end of the rotating shaft 25 is fixedly connected to the output end of the first motor 24. The rotating shaft 25 is arranged horizontally, and the axis of the rotating shaft 25 is parallel to the length direction of the inserting blade body 3 (that is, perpendicular to the arrangement direction of the filler sheets 2). The first cam 23 is fixedly mounted on the rotating shaft 25. One end of the spur rack 18 contacts the edge of the first cam 23. A first elastic member 20 is provided between the spur rack 18 and the sliding seat 14. The first elastic member 20 makes the spur rack 18 tend to approach the first cam 23. In this embodiment, a limit plate 21 is fixedly mounted on the sliding seat 14, and round rod segments 27 are provided at both ends of the spur rack 18. A large head 22 is provided at one end of the round rod segment 27 close to the first cam 23. The large head 22 is hemispherical, and the arcuate surface of the large head 22 is used to contact the edge of the first cam 23. The round rod segment 27 is movably inserted into the limit plate 21. The first elastic member 20 is a spring, and the two ends of the spring are respectively fixedly connected to the flat surface of the large head 22 and one side of the limit plate 21. The first motor 24 rotates, driving the rotating shaft 25 and the first cam 23 to rotate. Due to the periodic intermittent rotation of the first cam 23, the spur rack 18 reciprocates in the horizontal direction along the arrangement direction of the filler sheets 2, thereby realizing the swing of the inserting knife body 3.

[0049] A blowing mechanism is provided on the sliding seat 14, which is connected to the end of the spur rack 18 away from the first cam 23. The blowing mechanism includes a push plate 28, an air storage bag 29 and a U-shaped frame 30. The push plate 28 is slidably arranged at the opening 37 of the U-shaped frame 30. The U-shaped frame 30 is fixedly mounted on the sliding seat 14, and the air storage bag 29 is installed in the U-shaped frame 30. The side walls of the air storage bag 29 are fixedly connected to one side of the push plate 28 and the inner wall of the U-shaped frame 30 respectively. The round rod segment 27 at one end of the spur rack 18 away from the first cam 23 is fixedly connected to the other side of the push plate 28. Similarly, the first elastic member 20 and the limit plate 21 can also be mounted on the round rod segment 27 at one end of the spur rack 18 away from the first cam 23 to facilitate the reset action of the spur rack 18.

[0050] An air blowing pipe 12 is provided on the sliding seat 14, and an air blowing channel (not shown) is provided inside each bayonet body 3. A plurality of air blowing branches 8 are provided on the top of the bayonet body 3 on one side of the pressure sensor 7. One end of each air blowing branch 8 is connected to the air blowing channel, and the other end is provided with a nozzle 9 facing the pressure sensor 7. A first hose 10 is provided between each bayonet body 3 and the air blowing pipe 12. The air blowing channel is connected to the air blowing pipe 12 through the first hose 10, and the air blowing pipe 12 is connected to the air storage bag 29. In this embodiment, the two ends of the push plate 28 are slidably connected to the two wing plates of the U-shaped frame 30, and the air storage bag 29 is located inside the frame formed by the push plate 28 and the U-shaped frame 30. A vent head is provided between the air storage bag 29 and the blowing branch pipe 8. One end of the vent head is connected to the air storage bag 29, and the other end passes through the web of the U-shaped frame 30 and is connected to the blowing main pipe 12. With such a structural design, the spur gear reciprocates horizontally to squeeze the air storage bag 29, and the gas inside the squeezed air storage bag 29 flows into the blowing main pipe 12 through the vent head, and then passes through the first hose 10 and the blowing branch pipe 8. The channel and the air blowing branch 8 are connected, and air is sprayed from the nozzle 9 to clean the dust and impurities on the top wall of the insert blade body 3. The air blowing cleaning is designed because, on the one hand, when the device is not in use, it is exposed to the outside world, and impurities, dust, etc. in the control may fall on the top wall of the insert blade body 3, affecting the detection of the pressure sensor 7. On the other hand, the present application is provided with a cleaning mechanism. When the insert blade body 3 is inserted into the gap of the filler sheet 2, the cleaning mechanism can clean the scale. The scale may fall on the top wall of the insert blade body 3, which will also affect the detection of the pressure sensor 7.

[0051] The sliding seat 14 is provided with a cleaning mechanism, which includes a fixing rod 32 and a micro air compressor 31. The length direction of the fixing rod 32 is parallel to the arrangement direction of the filler sheets 2. The fixing rod 32 is fixedly supported on the sliding seat 14 by a support rod 33. The fixing rod 32 is located above the arc-shaped rack 19. An air storage chamber 34 and an air release chamber 35 are arranged inside the fixing rod 32. The air storage chamber 34 is located in the middle of the fixing rod 32, and the air release chamber 35 is located above the air storage chamber 34. The air storage chamber 34 and the air release chamber 35 both extend along the length direction of the fixing rod 32. The micro air compressor 31 is fixedly mounted on the sliding seat 14. One end of the air storage chamber 34 is connected to the exhaust end of the micro air compressor 31, and a control mechanism is provided between the other end and the air release chamber 35. The control mechanism can release the compressed air in the air storage chamber 34 to the air release chamber 35. A second hose 11 is provided between each of the fixing rods 32, and a cleaning channel is provided inside the inserting blade body 3. The cleaning channel includes a main cleaning channel and a branch cleaning channel. There are two branch cleaning channels that respectively pass through the upper and lower side walls of the tip of the inserting blade body 3. The two branch cleaning channels are respectively connected to one end of the main cleaning channel, and the other end of the main cleaning channel is connected to the degassing chamber 35 through the second hose 11. With such a structural design, compressed air can be stored in the air storage chamber 34 through the WeChat air compressor. When the control mechanism releases the compressed air in the air storage chamber 34 to the degassing chamber 35, the compressed air is ejected from the tip of the inserting blade body 3 through the degassing chamber 35, the second hose 11, and the cleaning channel, which can effectively clean the scale in the gap, prevent the scale from affecting the insertion of the inserting blade body 3 and affecting the detection of the detection unit, and at the same time help the cooling water to circulate smoothly in the filler sheet 2.

[0052] A cavity 36 is provided inside the fixed rod 32 on one side of the air storage chamber 34. An opening 37 is provided between the cavity 36 and the air storage chamber 34. The cavity 36 is communicated with the air storage chamber 34 through the opening 37. A through hole 38 is provided between the cavity 36 and the degassing chamber 35. The cavity 36 is communicated with the air storage chamber 34 through the through hole 38. The control mechanism includes a control rod 39 and a second cam 26. The second cam 26 is fixedly sleeved on the rotating shaft 25. One end of the control rod 39 contacts the edge of the second cam 26, and the other end passes through the cavity 36 and the opening 37 in sequence and extends into the air storage chamber 34. The control rod 39 is located in the air storage chamber 34. A valve disc 40 is fixedly mounted on one end of the inner portion. The valve disc 40 is used to seal the opening 37. The diameters of the opening 37, valve disc 40, and air storage chamber 34 gradually increase. A sealing disc 41 is fixedly mounted on the control rod 39. The sealing disc 41 is located within the cavity 36 and is in sliding, sealing contact with the sidewall of the cavity 36. A second elastic member 42 is disposed between the control rod 39 and the sliding seat 14. The second elastic member 42 enables the valve disc 40 to seal the opening 37. When the control rod 39 moves toward the air storage chamber 34, the air storage chamber 34 can communicate with the degassing chamber 35 through the opening 37, the cavity 36, and the through hole 38. In this embodiment, the connection between the control rod 39 and the second cam 26 is structurally similar to the connection between the round rod 44 segment 27 and the first cam 23 described above. The second elastic member 42 is also a spring. The control rod 39 slides through the limit plate 21 and the fixed rod 32. With this structural design, the first motor 24 rotates, driving the second cam 26 to rotate, causing the control rod 39 to reciprocate in the horizontal direction, and the valve plate 40 to periodically open and close. When the valve plate 40 opens, the compressed air in the air storage chamber 34 is released. Because the sealing plate 41 seals the cavity 36, the compressed air flows through the opening 37, the cavity 36, and the through hole 38 to the degassing chamber 35, and finally is ejected from the tip of the insert body 3 through the cleaning channel.

[0053] In the related art, cooling water flows in the middle of the packing sheet 2 for a long time and is in a position where sunlight cannot reach, so the possibility of clogging is low. However, at the dry area at the edge of the packing sheet 2, due to the entry of natural wind from the outside and easy exposure to sunlight, the suitable temperature and photosynthesis are conducive to the growth of algae and fungi. The reproduction of moss, algae, and fungi will form biological slime, and eventually form scale to clog the packing sheet 2. The biological slime has a strong adsorption force, which affects the insertion of the inserter body 3 of the present application and affects the detection of the detection unit.

[0054] In the above embodiment, the first motor 24 , the second motor 47 , the third motor 55 , the telescopic member 17 , and the micro air compressor 31 are all electrically connected to the controller.

[0055] Working principle:

[0056] When in use, select a height in the vertical direction, and detect from left to right through the lifting and transverse movement mechanism. During the detection, the inserting knife body 3 is aligned with a gap in the filler sheet 2, and the telescopic member 17 is extended, and the sliding seat 14 moves on the supporting plate 16, so that the fixing plate 43 and the inserting knife body 3 are inserted into the gap of the filler sheet 2, and the first 5 cm deep into the interior of the filler sheet 2 is a straight line depth, and the inserting knife body 3 does not swing. Then start the first motor 24, the first motor 24 rotates, driving the rotating shaft 25 rotating shaft 25, and at the same time making the first swallow and the second cam 26 rotate periodically, the first cam 23 makes the straight rack 18 reciprocating linear motion along the arrangement direction of the filler sheet 2, thereby driving all the inserting knife bodies 3 to swing left and right with the axis of the round rod 44 as the rotation axis 25 line, and at the same time the reciprocating motion of the straight rack 18 will squeeze the air storage bag 29, so that the nozzle 9 blows and cleans the top wall of the inserting knife body 3, and the inserting knife body 3 goes deep into the gap while swinging. It is obvious that the swing amplitude of the insert blade body 3 is small to avoid interference with the filler sheet 2; the control rod 39 is periodically moved toward the inside of the fixed rod 32, so that the valve plate 40 periodically opens the opening 37, and the compressed air in the air storage chamber 34 is finally ejected from the upper and lower sides of the tip of the insert blade body 3 to clean the scale in the gap. When the insert blade body 3 is inserted into the gap of the filler sheet 2, the humidity sensor 5 and the micro camera 6 start working. The swinging insert blade body 3 can enable the micro camera 6 to obtain a larger field of view, and also enable the compressed air ejected from the cleaning channel to clean a wider angle, so as to better clean the surface of the filler sheet 2 in the gap. Finally, the display unit will feedback the data collected by the humidity sensor 5 and the picture obtained by the micro camera 6 to obtain the detection result, so as to judge the depth of the dry area in the gap, and calculate the area of the dry area and the wet area of the gap of the filler sheet 2, and obtain the wetness rate of the filler sheet 2. The detection accuracy is high and the operating status of the cooling tower 1 can be accurately grasped. After the detection is completed, the first motor 24 stops working, the inserting blade body 3 stops swinging, the telescopic member 17 retracts, and the inserting blade body 3 exits the gap of the packing sheet 2. Since the micro camera 6 and the humidity sensor 5 are waterproofed, the next round of detection can be carried out quickly. The detection mechanism is moved to the right by the transverse movement component, and the above detection operation is repeated until all the packing sheets 2 at the horizontal position are detected. Then, the dry area and the wet area of the packing are calculated and compared with the horizontal cross-sectional area of the packing to obtain the packing wetness ratio, which is packing wetness ratio = (horizontal cross-sectional area of the packing - dry area of the packing cross section) / cross-sectional area of the packing.

[0057] It should be noted that to reduce measurement errors, multiple measurements at equal intervals in the vertical direction can be taken and the average value calculated. Experimental analysis shows that the results of five or more measurements are relatively close. Therefore, while ensuring the accuracy of the measured values and simplifying the experimental process, the unified method of five equal-interval measurements at different heights is used.

[0058] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that the technical solutions of the present invention may be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalents shall be encompassed by the claims of the present invention. Any techniques, shapes, and structures not described in detail herein are well known.

Claims

1. A cross-flow cooling tower packing wetness detection device, arranged on both sides of the cooling tower packing sheet, characterized in that: It includes a lifting and transverse movement mechanism, a support plate and a detection mechanism, the detection mechanism is installed on the support plate, and the support plate is installed on the lifting and transverse movement mechanism. The detection mechanism includes a driving assembly and a knife assembly. The knife assembly includes a plurality of knife bodies arranged side by side along the arrangement direction of the filler sheets. The driving assembly is used to drive the knife assembly to insert into the gaps between the filler sheets. A pressure sensor is embedded in the top of the knife body, and a detection unit for detecting the boundary line between the dry area and the wet area is embedded in the front end of the knife body; and it also includes a display unit for feedback of the detection results.

2. A cross-flow cooling tower filler wetness rate detection device according to claim 1, characterized in that: The driving assembly includes a telescopic member and a sliding seat. A dovetail block is provided on the support plate. A dovetail groove matching the dovetail block is provided at the bottom of the sliding seat. The blade assembly is installed on one side of the sliding seat, and the telescopic end of the telescopic member is fixedly connected to the other side of the sliding seat.

3. A cross-flow cooling tower filler wetness detection device according to claim 2, characterized in that: The sliding seat is provided with a fixed plate under each inserting blade body, and the inserting blade body is rotatably mounted on the corresponding fixed plate. The rear end of each inserting blade body is provided with an arc-shaped rack. The sliding seat is provided with a swing mechanism, and the swing mechanism includes a spur rack. The spur rack is slidably mounted on the sliding seat. The length direction of the spur rack is parallel to the arrangement direction of the filler sheets. Each of the arc-shaped racks is engaged with the spur rack for transmission. The sliding seat is provided with a power mechanism for driving the spur rack to move along the arrangement direction of the filler sheets.

4. A cross-flow cooling tower filler wetness detection device according to claim 3, characterized in that: A round rod is fixedly provided in the middle of the fixing plate, and an arc-shaped groove is opened at the rear end. The center of the arc-shaped groove is located on the axis of the round rod. The front end of the inserting knife body is rotatably mounted on the rotating shaft, and an auxiliary support member is provided at the rear end. The bottom end of the auxiliary support member is slidably supported on the arc-shaped groove.

5. A cross-flow cooling tower filler wetness detection device according to claim 3, characterized in that: The power mechanism includes a first motor, a rotating shaft and a first cam. The first motor is mounted on a sliding seat. The rotating shaft is rotatably mounted on the sliding seat and one end of the rotating shaft is fixedly connected to the output end of the first motor. The axis of the rotating shaft is parallel to the length direction of the insert body. The first cam is fixedly sleeved on the rotating shaft. One end of the spur rack contacts the edge of the first cam. A first elastic member is provided between the spur rack and the sliding seat. The first elastic member causes the spur rack to tend to approach the first cam.

6. A cross-flow cooling tower filler wetness detection device according to claim 5, characterized in that: The sliding seat is provided with an air blowing mechanism, which is connected to the end of the straight rack away from the first cam. The air blowing mechanism includes a push plate, an air storage bag and a U-shaped frame. The push plate is slidably arranged at the opening of the U-shaped frame, the U-shaped frame is mounted on the sliding seat, and the air storage bag is mounted in the U-shaped frame. The side walls of the air storage bag are respectively fixedly connected to one side of the push plate and the inner wall of the U-shaped frame, and the end of the straight rack away from the first cam is fixedly connected to the other side of the push plate; The sliding seat is provided with an air blowing main pipe, and each of the insert blade bodies is provided with an air blowing channel. A plurality of air blowing branches are provided at the edge of the pressure sensor on the top of the insert blade body. One end of each of the air blowing branches is connected to the air blowing channel, and the other end is provided with a nozzle. A first hose is provided between each of the insert blade bodies and the air blowing main pipe, and the air blowing channel is connected to the air blowing main pipe through the first hose, and the air blowing main pipe is connected to the air storage bag.

7. A cross-flow cooling tower filler wetness detection device according to claim 5, characterized in that: The sliding seat is provided with a cleaning mechanism, which includes a fixed rod and a micro air compressor, the length direction of the fixed rod being parallel to the arrangement direction of the filler sheets, and an air storage chamber and an air release chamber being arranged at intervals inside the fixed rod, the air storage chamber and the air release chamber both extending along the length direction of the fixed rod, the micro air compressor being mounted on the sliding seat, one end of the air storage chamber being communicated with the micro air compressor, and a control mechanism being provided between the other end and the air release chamber, the control mechanism being capable of releasing the compressed air in the air storage chamber to the air release chamber, a second hose being provided between each of the insert blade bodies and the fixed rod, a cleaning channel being provided inside the insert blade body, one end of the cleaning channel passing through the front end of the insert blade body, and the other end being communicated with the air release chamber through the second hose.

8. A cross-flow cooling tower filler wetness detection device according to claim 7, characterized in that: The cam is fixedly mounted on the rotating shaft, and one end of the control rod is in contact with the edge of the second cam, and the other end passes through the cavity and the opening in sequence and extends into the gas storage cavity. The end of the control rod located in the gas storage cavity is fixedly provided with a valve plate, and the valve plate is used to seal the opening, and the diameters of the opening, valve plate and gas storage cavity gradually increase. A sealing plate is fixedly mounted on the control rod, and the sealing plate is located in the cavity and in sliding sealing contact with the side wall of the cavity. A second elastic member is provided between the control rod and the sliding seat, and the second elastic member enables the valve plate to have a tendency to seal the opening. When the control rod moves in a direction close to the gas storage cavity, the gas storage cavity can be connected to the gas release cavity through the opening, cavity and through hole.

9. The cross-flow cooling tower filler wetness detection device according to claim 1, characterized in that: The front end of each of the blade bodies is provided with an annular fill light.

10. A cross-flow cooling tower filler wetness detection device according to claim 9, characterized in that: The detection unit includes a micro camera and a humidity sensor. A battery is provided on the blade body. The battery supplies power to the fill light, the pressure sensor, the humidity sensor and the micro camera.

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