CN2243497Y

CN2243497Y - Antifreezing apparatus of large showering cooling tower

Info

Publication number: CN2243497Y
Application number: CN 95221915
Authority: CN
Inventors: 陈建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-20
Filing date: 1995-09-20
Publication date: 1996-12-25
Anticipated expiration: 2005-09-20

Abstract

The utility model relates to a cooling tower component. The lower part of a water supply tank is provided with branch water pipes in section along an inner wall, the branch water pipes are communicated with the tank and are controlled by a valve, and the branch water pipe is provided with water shower seams and rotary spray cups which face to the inner wall of the tower. The air intake of the cooling tower is provided with a funnel-shaped air guide screen which is composed by mutually connected heat collection plates, and the heat collection plates are provided with louver type water baffle plates of which the opening degree is simultaneous and adjustable. The utility model eliminates water shower dead angles in the cooling tower and changes the distribution situation of water shower density, the cold air volume can be adjusted, and the utility model has remarkable antifreeze effect and simple structure.

Description

Large-scale showering cooling tower antifreezing device

The utility model relates to a kind of member of cooling tower, especially a kind of device that improves resistance to frost.

Winter, the showering cooling tower ubiquity of the northern area phenomenon of freezing, it mainly is collar tie beam that the cooling tower structure characteristics cause icing position, secondary beam, stuffing-box periphery and air intake, to form ice barrier when serious, not only reduced the operating efficiency of cooling tower, what influence was produced normally carries out, and especially through removing repeatedly after the ice raft barrier, makes cooling tower load-bearing concrete structural failure quite serious, directly threaten the safe handling of cooling tower, for addressing the above problem, generally take following measure to attempt to be solved at present, but have little effect, even negative interaction arranged, one of measure is in cooling tower air intake periphery paravent to be set, in the hope of reducing the cold wind wind speed, and the too fast reduction of temperature when delaying to drench under the recirculated water, reach antifreeze purpose, practice shows that paravent not only can not change the cold wind wind speed, has influenced the normal heat of cooling tower in summer on the contrary and has exchanged.It is antifreeze that two of measure is to use special arrangement to spray hot water, but because injection hot water acting surface is fixed and be limited, can only be used for deicing, and can not solve antifreeze problem at all.

The utility model aims to provide a kind of antifreezing effect significantly and not influences the simple in structure defroster of cooling tower in operate as normal in any season, with thorough solution cooling tower freezed in winter problem.

Above-mentioned purpose is achieved through the following technical solutions:

In cooling tower (1), supply flume (2), the bottom communicates with supply flume and by the distributive pipe (4) of valve (5) control along inner wall of tower segmentation setting, the uniform rotary nozzle in this distributive pipe bottom side (6), tube wall is provided with the trickle seam (25) towards inner wall of tower, the air intake of cooling tower (10) is provided with the funnel-form wind-guiding screen that is interconnected to constitute by thermal-arrest plate (9), also fixedly connected with the sealing of air intake upper end edge in the upper end of each thermal-arrest plate, thermal-arrest plate (9) is provided with venetian blind type water baffle (15), the aperture synchronous adjustable of each water baffle;

Water baffle (15) is that volume is in the form of slot on the bottom, the uniform leaking hole of bottom land (16);

Fixedly connected between the rectangle thermal-arrest plate (9) by fanning strip (17), also be provided with fixing venetian blind type water baffle (15) on each fanning strip;

Guide rod (20) on each water baffle (15) support axle (19) is connected with connecting rod (21) axle, also be provided with bent angle guide rod (22) on one of them support axle, its two jiaos of ends are by push rod (23) and be fixed on the structural handle (24) that pushes away that has locking mechanism of the corresponding concrete of air intake and join.

With drawings and Examples the utility model is illustrated below:

1 defroster of accompanying drawing installation site schematic diagram in cooling tower

Accompanying drawing 2 Figure 1A-A view

Accompanying drawing 3 funnel-form wind-guidings screen structure partial schematic diagram

Accompanying drawing 4 water baffle aperture guiding mechanism schematic diagrames

Existing cooling tower is determined by its structure form, bypass channel (2) to the inner wall of tower between the stuffing-box (7) is the trickle dead angle, cause the spray density at air intake place lower, air intake and peripheral filler is nearest in addition, these reasons are to make cooling tower collar tie beam (8), secondary beam (13), the immediate cause that freezes in stuffing-box (7) periphery, this device as shown in Figure 2, it at first is segmentation setting and along the distributive pipe (4) of inner wall of tower looping, hot water is drenched dead angle area by trickle seam (25) and rotary nozzle (6) (see figure 3), make collar tie beam (8), secondary beam (13), the possibility of freezing has fundamentally been removed in the periphery of stuffing-box (7), changed the distribution that former cooling tower water drenches density simultaneously, making peripheral water drench density improves, its effect is that the peripheral trickle of higher density is let out under after funnel-form wind-guiding screen (9) is concentrated, wind-guiding screen self temperature is raise, guarantee that the wind-guiding screen can not freeze; Make cold wind enter cooling tower on the other hand from wind-guiding screen bottom, not only air quantity is restricted, and through highdensity peripheral water curtain, the cold wind temperature is increased, be equivalent to the increase of distance between air intake (10) and stuffing-box (7) periphery, make collar tie beam, secondary beam, stuffing-box avoid direct contact nearer, help the heat-preserving anti-freezing at these positions with cold wind.The discharge of distributive pipe in this device (4) is subjected to valve (5) control, is aided with the spray angle of the variation of rotary nozzle (6) again, can and adjust peripheral water curtain spray density season effectively according to water temperature, makes cooling tower be in optimum Working.

Fig. 3 expresses the be interconnected to form funnel-form of rectangular thermal-arrest plate (9) through fanning strip (17), fix by bracket angle between two plates, and anti-routinely drain process, the upper end of each thermal-arrest plate joins by the secondary beam (13) of hinge (8) with the air intake upper end, the joint portion hides sealing by mackintosh (14), and it is icing to avoid leaking; Thermal-arrest plate and fanning strip are by the metal material manufacturing, get final product through antirust processing, all be provided with the water baffle (15) of metal on two plates, its groove shape crimping tower has added the time of staying of trickle, help whole wind-guiding screen self temperature raising and keep, actual measurement shows, winter, its average surface temperature can remain on more than 2～5 ℃, the wind-guiding screen can not freeze, the feasible trickle after the water baffle retardance of the low leaking hole of board slot (16) that respectively blocks water makes air intake (10) locate to keep uniform annular water curtain to let out under the uniform density to following pool wall (12).

Fig. 4 shows the example of each water baffle (15) aperture synchronous adjusting mechanism, hand is removed when pushing away handle (24), need first push-tight ratchet joystick (26), make it to affect movable ratchet (accompanying drawing is not shown) to make it to break away from ratchet (28) gear teeth, the locking that pushes away handle (24) is disengaged, the rotation that pushes away handle rotates bent angle guide rod (22) by two push rods (23), through connecting rod (21) transmission, each water baffle support axle (19) is in the effect rotation in the same way simultaneously down of guide rod (20) separately, realized the synchronous adjustment of water baffle aperture, determine to unclamp ratchet joystick (26) after the aperture, it is promptly locked to push away handle, this example push away handle and locking mechanism is installed on the herringbone column (11) of cooling tower.The basic goal of adjusting the water baffle aperture is to adjust the ability of wind-guiding screen restriction cold wind air quantity, summer water baffle should open fully, then open in right amount winter, even closed fully, thus make this device satisfy cooling tower in non-ice period the needs to air quantity.

The utility model has changed the distribution situation of spray density, disappears effectively to have fallen water pouring dead angle, and can adjust the cold wind air quantity, therefore has significant cooling tower antifreezing effect, and is simple in structure, is easy to promote.

Claims

1. the efficient defroster of large-scale showering cooling tower, it is characterized in that: communicate with supply flume and by the distributive pipe of valve control along the inner wall of tower setting in cooling tower supply flume bottom, its uniform rotary nozzle in bottom and towards the trickle of inner wall of tower seam, the air intake of cooling tower is provided with the funnel-form wind-guiding screen that is interconnected to constitute by the thermal-arrest plate, also fixedly connected with the sealing of air intake upper end edge in the upper end of each thermal-arrest plate, the thermal-arrest plate is provided with the venetian blind type water baffle, the aperture synchronous adjustable of each water baffle.

2. want 1 described defroster as claim, it is characterized in that water baffle is that volume is in the form of slot on the bottom, the uniform leaking hole of bottom land.

3. defroster as claimed in claim 1 is characterized in that: fixedly connected between the rectangle thermal-arrest plate by fanning strip, also be provided with fixing venetian blind type water baffle on each fanning strip.

4. defroster as claimed in claim 1, it is characterized in that the guide rod on each water baffle support axle is connected with pitman shaft, also be provided with the bent angle guide rod on one of them support axle, its two jiaos of ends by push rod be fixed on the structural handle that pushes away that has locking mechanism of the corresponding concrete of air intake and join, push away the joystick that affects ratchet be housed on the handle, ratchet be fixed on the ratchet that pushes away on the handle dead axle and be meshed.