CN201502476U - A cylindrical impulsive hydraulic drive for cooling tower fans - Google Patents

A cylindrical impulsive hydraulic drive for cooling tower fans Download PDF

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Publication number
CN201502476U
CN201502476U CN2009200905056U CN200920090505U CN201502476U CN 201502476 U CN201502476 U CN 201502476U CN 2009200905056 U CN2009200905056 U CN 2009200905056U CN 200920090505 U CN200920090505 U CN 200920090505U CN 201502476 U CN201502476 U CN 201502476U
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turbine
chamber
fan
water
cooling tower
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陈德新
庞辉春
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HENAN XINFEIJY ENERGY SCIENCE & TECHNOLOGY Co Ltd
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HENAN XINFEIJY ENERGY SCIENCE & TECHNOLOGY Co Ltd
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Abstract

本实用新型涉及冷却塔风机专用筒形冲动式水力驱动器,有效解决水轮机能量转换效率低、平面尺寸大和转速不匹配的问题,其结构是,包括有引水室、导水室、涡轮和主轴,引水室下面的导水室内装有环形轴向导叶,水流由引水室直接进入导叶,经导叶改变方向后以无撞击进口方式进入其下部的涡轮室,涡轮室内装有冲动型涡轮,水流经涡轮作功后由尾水管的出水口排出,引水室、导水室、涡轮室均为同一直径,自上而下排列成圆筒状,涡轮主轴经涡轮室上部的密封穿过引水室装在上部的组合轴承内,涡轮主轴与风机的风机轴直连,本实用新型结构独特,效率高,尺寸小,振动轻,更适合在工业冷却塔上安装,主要用于替代原风机驱动电动机,以达到节能、安全和减少维护的目的。

The utility model relates to a cylindrical impulsive hydraulic drive for fans of cooling towers, which effectively solves the problems of low energy conversion efficiency, large plane size and mismatching rotational speed of water turbines. The water guide chamber below the chamber is equipped with annular axial guide vanes. The water flow directly enters the guide vanes from the water guide chamber, and then enters the lower turbine chamber in a non-impact inlet way after being changed by the guide vanes. The impulsive turbine is installed in the turbine chamber, and the water flows through After the turbine does work, it is discharged from the water outlet of the draft tube. The diversion chamber, the diversion chamber and the turbine chamber are all of the same diameter and arranged in a cylindrical shape from top to bottom. In the upper combined bearing, the turbine main shaft is directly connected to the fan shaft of the fan. The utility model has unique structure, high efficiency, small size, and light vibration, and is more suitable for installation on industrial cooling towers. It is mainly used to replace the original fan drive motor to To achieve the purpose of energy saving, safety and maintenance reduction.

Description

一种冷却塔风机专用筒形冲动式水力驱动器 A cylindrical impulsive hydraulic drive for cooling tower fans

一、技术领域1. Technical field

本实用新型涉及水动力风机冷却塔,特别是一种专用于工业冷却塔节能技术改造或与节能型新型冷却塔配套的冷却塔风机专用筒形冲动式水力驱动器。The utility model relates to a hydrodynamic fan cooling tower, in particular to a cylindrical impulsive hydraulic driver specially used for energy-saving technical transformation of industrial cooling towers or matched with new energy-saving cooling towers.

二、背景技术2. Background technology

常用的工业冷却塔节能改造中,利用冷却塔供、配水系统一般留有的压力余量,用一种水轮机来驱动冷却塔风机,可以替代原风机驱动电动机。达到节能与少维护的目的。In the energy-saving renovation of commonly used industrial cooling towers, a water turbine is used to drive the fan of the cooling tower by using the pressure margin left in the cooling tower water supply and distribution system, which can replace the original fan to drive the motor. To achieve the purpose of energy saving and less maintenance.

目前,应用于工业冷却塔的水轮机,是采用双击式水轮机、混流式水轮机或轴流式水轮机。这些类型的水轮机的工作条件与冷却塔风机参数不匹配,都存在一些不足。双击式水轮机本来在无压状态下工作,用到冷却塔的有压系统后会使水轮机能量转换的效率低下,当容量较大或水压较高时还易发生振动。轴流式或普通混流式水轮机一般比转速比较高,其转速难以与冷却塔风机匹配。一种较好的方案是采用超低比转速混流式水轮机,可使水轮机转速与风机匹配,但超低比转速混流式水轮机平面尺寸较大,影响冷却塔气流的通道。为此,有必要克服现有风机水力驱动装置的缺陷,研究出一种转速合适、结构紧凑、尺寸较小的新型冷却塔风机水力驱动装置。At present, the water turbines used in industrial cooling towers are double-click water turbines, Francis water turbines or axial flow water turbines. The working conditions of these types of turbines do not match the cooling tower fan parameters, and there are some shortcomings. Double-click turbines originally work in an unpressurized state. Using the pressurized system of the cooling tower will reduce the energy conversion efficiency of the turbine, and it is prone to vibration when the capacity is large or the water pressure is high. Axial-flow or ordinary Francis turbines generally have relatively high specific speeds, and their speeds are difficult to match with cooling tower fans. A better solution is to use an ultra-low specific speed Francis turbine, which can match the turbine speed with the fan, but the ultra-low specific speed Francis turbine has a large plane size, which affects the airflow channel of the cooling tower. For this reason, it is necessary to overcome the defects of the existing fan hydraulic driving device and develop a new type of cooling tower fan hydraulic driving device with suitable rotating speed, compact structure and small size.

三、实用新型内容3. Contents of utility model

针对上述情况,为克服现有技术缺陷,本实用新型提供一种冷却塔风机专用筒形冲动式水力驱动器,可有效解决水轮机能量转换效率低、平面尺寸大和转速不匹配的问题,其解决的技术方案是,包括有引水室、导水室、涡轮和主轴,引水室下面的导水室内装有环形轴向导叶,水流由引水室直接进入导叶,经导叶改变方向后以无撞击进口方式进入其下部的涡轮室,涡轮室内装有冲动型涡轮,水流经涡轮作功后由尾水管的出水口排出,引水室、导水室、涡轮室均为同一直径,自上而下排列成圆筒状,涡轮主轴经涡轮室上部的密封穿过引水室装在上部的组合轴承内,涡轮主轴与风机的风机轴直连,其工作原理是,压力水流经压力管道首先进入引水室,然后进入导水室,水流经过导水室后增加水流的环量,并沿轴向均匀进入涡轮,水流在涡轮中进行能量转换,把水能变成旋转机械能,经涡轮轴带动冷却塔风机转动。这种水力驱动器为圆筒状结构,圆筒的上部是一个环形引水室,下面装有环形轴向导叶,水流由引水室直接进入导叶,经导叶改变方向后进入其下部的冲动型涡轮,从导叶出来的水流以无撞击进口方式进入涡轮叶片流道,作功后经尾水管排出。引水室、导水室、涡轮均为同一直径,自上而下排列成圆筒状,故称筒形水力驱动器。蜗轮室上部穿过引水室经密封在涡轮主轴上装有组合轴承,主轴与风机轴直连。本实用新型结构独特,工作原理新颖,与传统的水轮机有明显不同,传统的水轮机有冲击式和反击式,冲击式水轮机为无压工作方式,只靠动能作功,而反击式水轮机主要靠势能做功,流道为有压系统。本实用新型的筒形水力驱动器的涡轮为冲动式,采用汽轮机的冲动式涡轮原理进行设计,使涡轮不仅具有冲击式水轮机的特点,也具有反击式水轮机的特点,涡轮全周进水,涡轮在有压系统中工作,水流轴向进入,轴向流出。因此,过流能力强,尺寸紧凑。大弯曲度的涡轮叶片适合冷却塔供配水系统的剩余压力与流量条件,比转速和单位转速较低,与风机转速有很好的匹配性,适应驱动冷却塔风机的功率与转速要求。与现有应用于冷却塔的几种水轮机相比,效率高,尺寸小,振动轻,更适合在工业冷却塔上安装,主要用于替代原风机驱动电动机,以达到节能、安全和减少维护的目的。本实用新型也可应用于小型水电站。In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a special cylindrical impulsive hydraulic drive for cooling tower fans, which can effectively solve the problems of low energy conversion efficiency, large plane size and mismatching rotational speed of hydraulic turbines. The scheme is that it includes a water diversion chamber, a water diversion chamber, a turbine and a main shaft. The water diversion chamber below the water diversion chamber is equipped with an annular axial guide vane. The water flow directly enters the guide vane from the diversion chamber. It enters the turbine chamber at its lower part. The impulsive turbine is installed in the turbine chamber. The water flows through the turbine and is discharged from the outlet of the draft pipe. Cylindrical, the turbine main shaft passes through the upper seal of the turbine chamber and is installed in the upper combined bearing through the upper part of the turbine chamber. The turbine main shaft is directly connected to the fan shaft of the fan. In the water guide chamber, the water flow increases the circulation of the water flow after passing through the water guide room, and enters the turbine evenly along the axial direction. The water flow performs energy conversion in the turbine, turning the water energy into rotational mechanical energy, and drives the cooling tower fan to rotate through the turbine shaft. This kind of hydraulic drive has a cylindrical structure. The upper part of the cylinder is an annular water diversion chamber, and the lower part is equipped with annular axial guide vanes. The water flow directly enters the guide vanes from the water diversion chamber, and then enters the impulsive turbine at the lower part after being changed direction by the guide vanes. , the water flow from the guide vane enters the flow channel of the turbine blade in the way of non-impact inlet, and is discharged through the draft tube after doing work. The water diversion chamber, the water guide chamber and the turbine are all of the same diameter, arranged in a cylindrical shape from top to bottom, so it is called a cylindrical hydraulic drive. The upper part of the worm gear chamber passes through the water diversion chamber and is sealed on the turbine main shaft to install combined bearings, which are directly connected to the fan shaft. The utility model has a unique structure and a novel working principle, which is obviously different from the traditional water turbine. The traditional water turbine has impact type and counterattack type. To do work, the runner is a pressurized system. The turbine of the cylindrical hydraulic driver of the utility model is impulsive, and the impulsive turbine principle of the steam turbine is used for design, so that the turbine not only has the characteristics of the impact type water turbine, but also has the characteristics of the counterattack type water turbine. Working in the system, the water flow enters axially and flows out axially. Therefore, the flow capacity is strong and the size is compact. The turbine blades with large curvature are suitable for the residual pressure and flow conditions of the water supply and distribution system of the cooling tower. The specific speed and unit speed are low, and they have a good match with the fan speed. They are suitable for the power and speed requirements of driving the cooling tower fan. Compared with several existing water turbines used in cooling towers, it has high efficiency, small size and light vibration, and is more suitable for installation on industrial cooling towers. It is mainly used to replace the original fan drive motor to achieve energy saving, safety and maintenance reduction. Purpose. The utility model can also be applied to small hydropower stations.

四、附图说明4. Description of drawings

图1为本实用新型的结构剖面主视图Fig. 1 is the structural section front view of the utility model

1-引水室;2-导水室;3-蜗轮;4-涡轮室与尾水管;1-water diversion chamber; 2-water diversion chamber; 3-worm gear; 4-turbine chamber and draft tube;

5-主轴;6-轴承;7-密封;8-风机;9-出水口;5-main shaft; 6-bearing; 7-seal; 8-fan; 9-water outlet;

10-尾水管10-draft tube

图2为环形导水室的透视图Figure 2 is a perspective view of the annular water conducting chamber

2-导水室2- water guide chamber

五、具体实施方式5. Specific implementation

以下结合附图对本实用新型的具体实施方式作详细说明。Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.

由图1、2所示,本实用新型包括有引水室、导水室、涡轮和主轴,引水室1下面的导水室2内装有环形轴向导叶,水流由引水室直接进入导叶,经导叶改变方向后以无撞击进口方式进入其下部的涡轮室4,涡轮室4内装有冲动型涡轮3,水流经涡轮作功后由尾水管10的出水口9排出,引水室、导水室、涡轮室均为同一直径,自上而下排列成圆筒状,涡轮主轴5经涡轮室上部的密封7穿过引水室装在上部的组合轴承6内,涡轮主轴与风机8的风机轴直连。As shown in Figures 1 and 2, the utility model includes a water diversion chamber, a water diversion chamber, a turbine, and a main shaft. The water diversion chamber 2 below the water diversion chamber 1 is equipped with an annular axial guide vane, and the water flow directly enters the guide vane from the diversion chamber. After the guide vane changes direction, it enters the turbine chamber 4 at the lower part in the way of non-impact inlet. The impulsive turbine 3 is installed in the turbine chamber 4. After the water flows through the turbine and does work, it is discharged from the water outlet 9 of the draft tube 10. The water diversion chamber and the water diversion chamber The turbine chambers are all of the same diameter and arranged in a cylindrical shape from top to bottom. The turbine main shaft 5 passes through the water diversion chamber and is installed in the upper combined bearing 6 through the seal 7 on the upper part of the turbine chamber. The fan shaft of the turbine main shaft and the fan 8 is directly even.

为了保证水流能量的有效利用,所说的引水室1为圆环形或矩形断面,沿圆周方向等宽等高,便于上部布置轴承箱;所说的导水室2为轴向式,位于引水室下部,8~12个导叶均匀布置在圆环状的导水室中,并呈环形均匀装在引水室1下部的圆环内壁上,起着导水和形成水流环量的作用;所说的涡轮3为主要的做功部件,为保证涡轮有较大的做功能力,采用冲动型的叶片,叶片数目较多,为9~16片,叶片进出口之间有较大的弯曲度,进出口角度差为100°~130°;所说的涡轮室4为圆形腔体,涡轮室下部出水口与尾水管上口部直径相同,构成一体结构,尾水管呈收缩状;所说的组合轴承6为推力径向组合轴承。In order to ensure the effective use of water flow energy, the water diversion chamber 1 has a circular or rectangular cross-section, which is equal in width and height along the circumferential direction, which is convenient for the upper part of the bearing box; the water diversion chamber 2 is axial, located In the lower part of the chamber, 8 to 12 guide vanes are evenly arranged in the circular water-guiding chamber, and are evenly installed in a ring shape on the inner wall of the ring at the lower part of the water-guiding chamber 1, which play the role of water guiding and forming a water flow circulation; The said turbine 3 is the main working part. In order to ensure that the turbine has a greater working capacity, impulsive blades are used. The number of blades is more, ranging from 9 to 16. There is a large curvature between the inlet and outlet of the blades. The angle difference between the inlet and outlet is 100°~130°; the turbine chamber 4 is a circular cavity, and the water outlet at the lower part of the turbine chamber has the same diameter as the upper mouth of the draft tube, forming an integrated structure, and the draft tube is contracted; Combined bearing 6 is a thrust radial combined bearing.

引水室、导水室及其环形轴向导叶、涡轮3和涡轮室及尾水管构成过流系统;涡轮3、主轴5、密封7和组合轴承6构成能量传递系统。The water diversion chamber, the water guide chamber and its annular axial guide vanes, the turbine 3, the turbine chamber and the draft pipe constitute the flow system; the turbine 3, the main shaft 5, the seal 7 and the combined bearing 6 constitute the energy transfer system.

本实用新型的积极贡献在于:The positive contribution of the utility model is:

1、水力驱动器新的工作原理1. New working principle of hydraulic drive

现有的冷却塔风机水力驱动器均按照发电用水轮机的理论设计,或冲击式(双击式),或反击式(混流式),但本实用新型采用汽轮机的冲动式涡轮理论进行设计,大弯度的叶片具有冲击式水轮机的特点,而筒形有压流道具有反击式水轮机的特点,这二者结合是实现驱动器做功能力强、且能在有压水流系统高效工作的关键技术,也是水力驱动器具有低比转速、低单位转速、转速与风机相匹配的原因。Existing cooling tower fan hydraulic drives are designed according to the theory of water turbines for power generation, or impact type (double-click type), or counterattack type (mixed flow type), but the utility model adopts the impulsive turbine theory of steam turbines for design, large camber The blade has the characteristics of the impact turbine, and the cylindrical pressurized flow channel has the characteristics of the impact turbine. The combination of the two is the key technology to realize the strong performance of the driver and work efficiently in the pressurized water flow system. It is also a hydraulic drive. There are reasons for low specific speed, low unit speed, and speed matching with the fan.

2、采用筒形的独特结构2. Adopting a unique cylindrical structure

本实用新型包含了三种新型独特部件。The utility model comprises three kinds of novel unique parts.

(1)等直径的圆筒形流道。圆环形的引水室1、圆环形的导水室2和涡轮室3均为等直径,上下一体筒形布置,流道流畅,阻力小,结构紧凑,尺寸小。(1) Cylindrical runners with equal diameters. The annular water diversion chamber 1, the annular water diversion chamber 2 and the turbine chamber 3 are all of the same diameter, and the upper and lower parts are arranged in a cylindrical shape, the flow channel is smooth, the resistance is small, the structure is compact, and the size is small.

(2)环形导水室2。设置一个位于引水室下方的环形轴向导水机构,进口角为30°~45°,出口角为22°~30°(度),这样可保证流出导叶的水流以无撞击进口状态进入涡轮3,实现能量的高效转换。(2) Annular water guide chamber 2. Set up an annular axial water guide mechanism located under the water diversion chamber, with an inlet angle of 30°-45° and an outlet angle of 22°-30° (degrees), so as to ensure that the water flowing out of the guide vane enters the turbine 3 without hitting the inlet. , to achieve efficient energy conversion.

(3)涡轮3。本驱动器的核心部件涡轮属冲动型,不仅工作原理特别,结构也非常新颖,涡轮外形属轴流式,但叶片形状属冲动式,弯曲度大,叶片数量多,做功能力强,但比转速低,正好符合冷却塔风机的要求。(3) Turbo 3. The turbine, the core part of the drive, is impulsive, not only has a special working principle, but also has a very novel structure. Low, just in line with the cooling tower fan requirements.

考虑到冷却塔风机的轴向载荷和水轮机形成的轴向水推力,专用水利驱动器的轴承6采用推力径向组合轴承。Considering the axial load of the cooling tower fan and the axial water thrust formed by the water turbine, the bearing 6 of the special hydraulic driver adopts thrust radial combined bearing.

本实用新型的有益效果是使用本实用新型技术对传统的冷却塔进行技术改造,替代原驱动电动机及传动机构,可以达到节能、环保和少维护的目的。也可形成系列产品,与新型节能型冷却塔配套,使工业冷却塔系统更加安全高效。The beneficial effect of the utility model is to use the technique of the utility model to carry out technical transformation on the traditional cooling tower, replace the original driving motor and transmission mechanism, and achieve the goals of energy saving, environmental protection and less maintenance. It can also form a series of products, which can be matched with new energy-saving cooling towers to make the industrial cooling tower system safer and more efficient.

与目前使用的双击式、混流式冷却塔专用水轮机相比,本实用新型的筒形冲动式水力驱动器从工作原理、结构设计方面都具有明显的优越性,并且加工容易,造价低,是非常有应用前景的一项技术,其产品高效、小尺寸、运行稳定,有巨大的经济和社会效益。Compared with the current double-click type and mixed-flow type cooling tower special water turbines, the cylindrical impulse type hydraulic drive of the utility model has obvious advantages in terms of working principle and structural design, and is easy to process and low in cost, which is very effective. A technology with application prospects, its products are highly efficient, small in size, stable in operation, and have huge economic and social benefits.

Claims (7)

1. cylindrical impulse-type hydraulic drive special for fan of cooling tower, include flume, the water guide chamber, turbine and main shaft, it is characterized in that, in the water guide chamber (2) below the flume (1) the ring shaped axial stator is housed, current directly enter stator by flume, after changing direction, stator do not clash into the turbine chamber (4) that the import mode enters its underpart to have, impulsive style turbine (3) is housed in the turbine chamber (4), current are discharged by the water outlet (9) of draft tube (10) after the turbine work done, flume, the water guide chamber, turbine chamber is same diameter, be arranged in cylindric from top to bottom, turbine spindle (5) is in the combination bearing (6) that flume is contained in top is passed in the sealing (7) on turbine chamber top, and the blower fan axle of turbine spindle and blower fan (8) is direct-connected.
2. cylindrical impulse-type hydraulic drive special for fan of cooling tower according to claim 1 is characterized in that, said flume (1) is ring or rectangular cross section, and is along the circumferential direction wide contour.
3. cylindrical impulse-type hydraulic drive special for fan of cooling tower according to claim 1, it is characterized in that, said water guide chamber (2) is an axial type, be positioned at the flume bottom, 8~12 stators are evenly arranged in the circular water guide chamber, and evenly are contained in ringwise on the circle ring inner wall of flume (1) bottom.
4. cylindrical impulse-type hydraulic drive special for fan of cooling tower according to claim 1 is characterized in that, said turbine (3) is the blade of impulsive style, and lobe numbers is 9~16, and importing and exporting differential seat angle between blade is imported and exported is 100 °~130 °.
5. cylindrical impulse-type hydraulic drive special for fan of cooling tower according to claim 1, it is characterized in that said turbine chamber (4) is a circular cavity, turbine chamber bottom water outlet is identical with draft tube upper oral part diameter, constitute integrative-structure, it is contraction-like that draft tube is.
6. cylindrical impulse-type hydraulic drive special for fan of cooling tower according to claim 1 is characterized in that, said combination bearing (6) is the radial thrust combination bearing.
7. cylindrical impulse-type hydraulic drive special for fan of cooling tower according to claim 1 is characterized in that, said flume, water guide chamber and ring shaped axial stator thereof, turbine (3) and turbine chamber and draft tube constituted streaming system; Turbine (3), main shaft (5), sealing (7) and combination bearing (6) constitute energy delivery system.
CN2009200905056U 2009-05-31 2009-05-31 A cylindrical impulsive hydraulic drive for cooling tower fans Expired - Fee Related CN201502476U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101586573B (en) * 2009-05-31 2011-06-15 河南新飞纪元科技有限公司 Cylindrical impulse-type hydraulic drive special for fan of cooling tower
CN106640491A (en) * 2017-01-13 2017-05-10 溧阳市金土地节能科技有限公司 Efficient and durable special water turbine for cooling tower
CN109209733A (en) * 2018-10-16 2019-01-15 广州合众富华节能环保科技有限公司 A kind of hydraulic turbine of cooling tower

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101586573B (en) * 2009-05-31 2011-06-15 河南新飞纪元科技有限公司 Cylindrical impulse-type hydraulic drive special for fan of cooling tower
CN106640491A (en) * 2017-01-13 2017-05-10 溧阳市金土地节能科技有限公司 Efficient and durable special water turbine for cooling tower
CN106640491B (en) * 2017-01-13 2024-02-27 溧阳市金土地节能科技有限公司 Special hydraulic turbine of high-efficient durable cooling tower
CN109209733A (en) * 2018-10-16 2019-01-15 广州合众富华节能环保科技有限公司 A kind of hydraulic turbine of cooling tower
CN109209733B (en) * 2018-10-16 2020-06-30 广州合众富华节能环保科技有限公司 Cooling tower water turbine

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