CN209978706U - Constant flow control device for sprinkler heads of cross-flow cooling towers - Google Patents
Constant flow control device for sprinkler heads of cross-flow cooling towers Download PDFInfo
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- CN209978706U CN209978706U CN201920152941.5U CN201920152941U CN209978706U CN 209978706 U CN209978706 U CN 209978706U CN 201920152941 U CN201920152941 U CN 201920152941U CN 209978706 U CN209978706 U CN 209978706U
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Abstract
本实用新型公开了一种用于横流式冷却塔喷头的定流量控制装置，本装置包括设有填料的冷却塔塔体、设于塔体两侧并且位于填料上方的左布水盘和右布水盘以及位于塔体底部的集水盘，左布水盘和右布水盘底部间隔设有喷头，本装置还包括左水泵、右水泵和两个液位传感器，左水泵和右水泵的输入端分别通过管道连接集水盘、输出端分别通过管道连接左布水盘和右布水盘，两个液位传感器分别设于左布水盘和右布水盘并且液位信号分别控制左水泵和右水泵的启停。本装置在全工况范围内保持通过冷却塔填料的流量不变，在横流式冷却塔进水流量低于冷却塔额定流量的时候对进塔流量实施补偿，保持经过喷头的流量与额定工况基本相同，从而改善冷却塔工作热力性能。
The utility model discloses a constant flow control device for a sprinkler head of a cross-flow cooling tower. The device comprises a cooling tower tower body provided with packing, a left water distribution tray and a right cloth distributed on both sides of the tower body and located above the filler. The water pan and the water collecting pan at the bottom of the tower body, the left water distribution pan and the right water distribution pan are provided with nozzles at intervals. The device also includes a left water pump, a right water pump and two liquid level sensors. The input of the left water pump and the right water pump The ends are respectively connected to the water collecting tray through pipes, and the output ends are respectively connected to the left water distribution tray and the right water distribution tray through pipelines. and the start and stop of the right water pump. The device keeps the flow rate through the cooling tower filler unchanged in the whole range of working conditions. When the inlet water flow rate of the cross-flow cooling tower is lower than the rated flow rate of the cooling tower, it compensates the inlet flow rate, and maintains the flow rate through the nozzle and the rated working condition. Basically the same, thereby improving the thermal performance of the cooling tower.
Description
技术领域technical field
本实用新型涉及冷却系统技术领域，尤其涉及一种用于横流式冷却塔喷头的定流量控制装置。The utility model relates to the technical field of cooling systems, in particular to a constant flow control device for a sprinkler head of a cross-flow cooling tower.
背景技术Background technique
冷却塔是由水作为循环冷却剂，从制冷系统中吸收热量排放至大气中，以降低水温;其热量冷却是利用水与空气流动接触后进行冷热交换产生蒸汽，利用蒸汽挥发带走热量达到蒸发散热、对流传热和辐射传热等原理来散去工业或制冷系统中产生的余热来降低水温，以保证制冷系统的正常运行。The cooling tower uses water as a circulating coolant, absorbs heat from the refrigeration system and discharges it into the atmosphere to reduce the water temperature; its heat cooling is to use water and air flow to exchange cold and heat to generate steam, and use steam to volatilize to take away heat to achieve The principles of evaporative heat dissipation, convection heat transfer and radiation heat transfer are used to dissipate the waste heat generated in the industrial or refrigeration system to reduce the water temperature to ensure the normal operation of the refrigeration system.
冷却塔按不同的标准又可以进行多种分类，如按热水与空气的接触方式分有湿式冷却塔、干式冷却塔、干湿式冷却塔；如按热水与空气的流动方向分有逆流式冷却塔、横流（交流）式冷却塔、混流式冷却塔。Cooling towers can be classified into various categories according to different standards, such as wet cooling towers, dry cooling towers, and dry and wet cooling towers according to the contact method of hot water and air; such as according to the flow direction of hot water and air. Counter flow cooling tower, cross flow (AC) cooling tower, mixed flow cooling tower.
对横流式冷却塔，在各种冷冻系统的部分负荷工况下，横流式冷却塔进水流量常常低于冷却塔额定流量，布水盘内的水位因进水流量下降而降低，导致喷头可利用的液位及相应的动力下降，从而使喷头布水效果变差，喷头布水面积缩小并且均匀性变差，横流式冷却塔的热力性能相应恶化。For cross-flow cooling towers, under the partial load conditions of various refrigeration systems, the inlet water flow of the cross-flow cooling tower is often lower than the rated flow of the cooling tower, and the water level in the water distribution pan is lowered due to the drop in the inlet water flow, resulting in the nozzle can be reduced. The liquid level used and the corresponding power drop, so that the water distribution effect of the nozzle becomes poor, the water distribution area of the nozzle is reduced and the uniformity is deteriorated, and the thermal performance of the cross-flow cooling tower is correspondingly deteriorated.
发明内容SUMMARY OF THE INVENTION
本实用新型所要解决的技术问题是提供一种用于横流式冷却塔喷头的定流量控制装置，本装置在全工况范围内保持通过冷却塔填料的流量不变，在横流式冷却塔进水流量低于冷却塔额定流量的时候对进塔流量实施补偿，保持经过喷头的流量与额定工况基本相同，从而改善冷却塔工作热力性能。The technical problem to be solved by this utility model is to provide a constant flow control device for the sprinkler head of a cross-flow cooling tower. When the flow rate is lower than the rated flow rate of the cooling tower, the flow rate into the tower is compensated, and the flow rate through the nozzle is kept basically the same as the rated working condition, thereby improving the thermal performance of the cooling tower.
为解决上述技术问题，本实用新型用于横流式冷却塔喷头的定流量控制装置包括设有填料的冷却塔塔体、设于所述塔体两侧并且位于所述填料上方的左布水盘和右布水盘以及位于所述塔体底部的集水盘，所述左布水盘和右布水盘底部间隔设有喷头，本装置还包括左水泵、右水泵和两个液位传感器，所述左水泵和右水泵的输入端分别通过管道连接所述集水盘，所述左水泵和右水泵的输出端分别通过管道连接所述左布水盘和右布水盘，所述两个液位传感器分别设于所述左布水盘和右布水盘并且液位信号分别控制所述左水泵和右水泵的启停。In order to solve the above-mentioned technical problems, the constant flow control device for the sprinkler head of the cross-flow cooling tower of the present invention comprises a cooling tower tower body provided with fillers, and a left water distribution pan arranged on both sides of the tower body and located above the fillers. and the right water distribution tray and the water collecting tray at the bottom of the tower body, the bottom of the left water distribution tray and the right water distribution tray are provided with spray heads at intervals, the device also includes a left water pump, a right water pump and two liquid level sensors, The input ends of the left water pump and the right water pump are respectively connected to the water collecting tray through pipes, and the output ends of the left water pump and the right water pump are respectively connected to the left water distribution tray and the right water distribution tray through pipes. The liquid level sensors are respectively arranged on the left water distribution tray and the right water distribution tray, and the liquid level signal controls the start and stop of the left water pump and the right water pump respectively.
进一步，所述左水泵和右水泵是变频水泵。Further, the left water pump and the right water pump are variable frequency water pumps.
进一步，所述左水泵和右水泵的输入端和输出端采用金属管连接所述集水盘以及左布水盘和右布水盘。Further, the input end and the output end of the left water pump and the right water pump are connected to the water collecting tray, the left water distribution tray and the right water distribution tray by using metal pipes.
由于本实用新型用于横流式冷却塔喷头的定流量控制装置采用了上述技术方案，即本装置包括设有填料的冷却塔塔体、设于塔体两侧并且位于填料上方的左布水盘和右布水盘以及位于塔体底部的集水盘，左布水盘和右布水盘底部间隔设有喷头，本装置还包括左水泵、右水泵和两个液位传感器，左水泵和右水泵的输入端分别通过管道连接集水盘，左水泵和右水泵的输出端分别通过管道连接左布水盘和右布水盘，两个液位传感器分别设于左布水盘和右布水盘并且液位信号分别控制左水泵和右水泵的启停。本装置在全工况范围内保持通过冷却塔填料的流量不变，在横流式冷却塔进水流量低于冷却塔额定流量的时候对进塔流量实施补偿，保持经过喷头的流量与额定工况基本相同，从而改善冷却塔工作热力性能。Because the constant flow control device used for the sprinkler head of the cross-flow cooling tower of the present invention adopts the above technical solution, that is, the device comprises a cooling tower tower body provided with fillers, and a left water distribution pan arranged on both sides of the tower body and located above the fillers. and the right water distribution tray and the water collecting tray at the bottom of the tower body. The bottom of the left water distribution tray and the right water distribution tray are provided with spray heads. The device also includes a left water pump, a right water pump and two liquid level sensors. The input ends of the water pumps are respectively connected to the water collecting pan through pipes, the output ends of the left water pump and the right water pump are respectively connected to the left water distribution plate and the right water distribution plate through pipes. and the liquid level signal controls the start and stop of the left water pump and the right water pump respectively. The device keeps the flow rate through the cooling tower filler unchanged within the full range of working conditions, and compensates the flow rate entering the tower when the flow rate of the cross-flow cooling tower is lower than the rated flow rate of the cooling tower, keeping the flow rate passing through the nozzle and the rated working condition. Basically the same, thereby improving the thermal performance of the cooling tower.
附图说明Description of drawings
下面结合附图和实施方式对本实用新型作进一步的详细说明：Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
图1为本实用新型用于横流式冷却塔喷头的定流量控制装置结构示意图。FIG. 1 is a schematic structural diagram of a constant flow control device used in a cross-flow cooling tower nozzle according to the present invention.
具体实施方式Detailed ways
实施例如图1所示，本实用新型用于横流式冷却塔喷头的定流量控制装置包括设有填料11的冷却塔塔体1、设于所述塔体1两侧并且位于所述填料11上方的左布水盘2和右布水盘3以及位于所述塔体1底部的集水盘4，所述左布水盘2和右布水盘3底部间隔设有喷头21、31，本装置还包括左水泵5、右水泵6和两个液位传感器7、8，所述左水泵5和右水泵6的输入端分别通过管道连接所述集水盘4，所述左水泵5和右水泵6的输出端分别通过管道连接所述左布水盘2和右布水盘3，所述两个液位传感器7、8分别设于所述左布水盘2和右布水盘3并且液位信号分别控制所述左水泵5和右水泵6的启停。Example As shown in FIG. 1 , the constant flow control device used for the sprinkler head of a cross-flow cooling tower of the present invention includes a cooling tower tower body 1 provided with a filler 11 , which is arranged on both sides of the tower body 1 and is located above the filler 11 . The left water distribution tray 2 and the right water distribution tray 3 and the water collecting tray 4 located at the bottom of the tower body 1 are provided with spray heads 21 and 31 at intervals at the bottom of the left water distribution tray 2 and the right water distribution tray 3. This device It also includes a left water pump 5, a right water pump 6 and two liquid level sensors 7 and 8. The input ends of the left water pump 5 and the right water pump 6 are respectively connected to the water collecting pan 4 through pipes, and the left water pump 5 and the right water pump are respectively connected. The output ends of 6 are respectively connected to the left water distribution tray 2 and the right water distribution tray 3 through pipes, and the two liquid level sensors 7 and 8 are respectively provided in the left water distribution tray 2 and the right water distribution tray 3 and the liquid The bit signal controls the start and stop of the left water pump 5 and the right water pump 6 respectively.
优选的，所述左水泵5和右水泵6是变频水泵。Preferably, the left water pump 5 and the right water pump 6 are variable frequency water pumps.
优选的，所述左水泵5和右水泵6的输入端和输出端采用金属管连接所述集水盘4以及左布水盘2和右布水盘3。Preferably, the input end and the output end of the left water pump 5 and the right water pump 6 are connected to the water collecting tray 4 and the left water distribution tray 2 and the right water distribution tray 3 by using metal pipes.
在横流式冷却塔工作过程中，当进水流量发生变化时，左布水盘和右布水盘的液位改变，液位传感器检测液位发生变化后，通过调整变频水泵的工作频率改变从集水盘抽取至左右布水盘的水量，维持左右布水盘以及底部喷头的工作液位基本恒定。通过调整水量使得喷头的工作条件变化不大，因此喷头通过流量基本保持不变，从而保障了冷却塔在较小进水流量的工作条件下，水仍然能保持与额定工况下同样的布散效果。During the working process of the cross-flow cooling tower, when the flow rate of the incoming water changes, the liquid level of the left water distribution pan and the right water distribution pan changes. The amount of water pumped from the water collecting tray to the left and right water distribution trays keeps the working liquid level of the left and right water distribution trays and the bottom nozzles basically constant. By adjusting the water volume, the working conditions of the sprinkler head do not change much, so the flow rate of the sprinkler head remains basically unchanged, thus ensuring that the cooling tower can still maintain the same distribution as under the rated working conditions under the working conditions of a small water inlet flow rate. Effect.
在各种空调系统的部分负荷工况下，横流式冷却塔进水流量常常低于冷却塔额定流量，导致喷头布水面积缩小和均匀性变差，横流式冷却塔的热力性能相应恶化，本装置能够有效根治这种缺陷。本装置通过流量补偿措施，在横流式冷却塔进水流量低于冷却塔额定流量的时候对进塔流量实施补偿，保持经过喷头的流量与额定工况基本相同，使得冷却塔内填料与冷却水充分接触，从而保证横流式冷却塔的热力性能不因喷头工作性能恶化而下降，实现横流式冷却塔在全工况范围内的高效热力性能。Under the partial load conditions of various air-conditioning systems, the inlet water flow of the cross-flow cooling tower is often lower than the rated flow of the cooling tower, resulting in a reduction in the water distribution area of the sprinkler and poor uniformity, and the thermal performance of the cross-flow cooling tower deteriorates accordingly. The device can effectively cure this defect. Through the flow compensation measures, the device compensates the incoming flow of the cross-flow cooling tower when the incoming water flow is lower than the rated flow of the cooling tower, and keeps the flow through the nozzle basically the same as the rated working condition, so that the filler in the cooling tower and the cooling water Full contact, so as to ensure that the thermal performance of the cross-flow cooling tower is not reduced due to the deterioration of the working performance of the nozzle, and realize the high-efficiency thermal performance of the cross-flow cooling tower in the full range of operating conditions.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623699A (en) * | 2022-03-31 | 2022-06-14 | 广东览讯科技开发有限公司 | Integrated cold station integrated transverse flow open type cooling tower special for efficient machine room |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623699A (en) * | 2022-03-31 | 2022-06-14 | 广东览讯科技开发有限公司 | Integrated cold station integrated transverse flow open type cooling tower special for efficient machine room |
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Address after: 201108, D91 building, building 2, building 4299, 6 Jin Du Road, Shanghai, Minhang District Patentee after: Shanghai Carbon Soot Energy Service Co.,Ltd. Address before: 201108, D91 building, building 2, building 4299, 6 Jin Du Road, Shanghai, Minhang District Patentee before: SHANGHAI DISCOVERY ENERGY ENVIRONMENTAL SERVICE Co.,Ltd. |