CN201210028Y

CN201210028Y - Coil unit for reversed flow closed type cooling tower

Info

Publication number: CN201210028Y
Application number: CNU200820058580XU
Authority: CN
Inventors: 章立新; 何仁兔; 欧阳新萍; 苏永秋; 杨茉; 范志远; 高明; 薛梅; 黄陈师; 金林波; 刘妮; 王企鲲
Original assignee: ZHEJIANG JINLING REFRIGERATING ENGINEERING Co Ltd; University of Shanghai for Science and Technology
Current assignee: ZHEJIANG JINLING REFRIGERATING ENGINEERING Co Ltd; University of Shanghai for Science and Technology
Priority date: 2008-05-19
Filing date: 2008-05-19
Publication date: 2009-03-18
Anticipated expiration: 2018-05-19

Abstract

The utility model relates to a pipe coil unit of a counter flow closed cooling tower, comprising four-way straight pipes, four-way U-shaped pipe racks, further comprising one-four 3h transfer heads. The upper one-four 3h transfer head and the lower one-four 3h transfer head are respectively connected with the upper four-way straight pipe and the lower four-way straight pipe to form staggered straight pipe sections, and the distance between pipes is fixed by a locating plate. Right-left reciprocating four-way equal-distance equal-resistance parallel pipe coils are formed on the vertical faces between the straight pipe sections through the U-shaped pipe racks to connect with a horizontal header of the counter flow closed cooling tower. A section of corrugated pipe is closely lean to a joint end. The pipe coil unit is convenient to mount, facilitates gas exhaust and water drain; further, packing can be arranged between two reciprocating pipe passes to improve the radiating efficiency of unit pipe area.

Description

The coil pipe unit that is used for adverse current closed type cooling column

Technical field

The utility model relates to the core component of a kind of cooler or cooling tower, the coil pipe unit of especially a kind of adverse current closed type cooling column or countercurrent evaporation cooling (condensation) device.

Background technology

Closed cooling tower or cooling (condensation) device is to be widely used in the refrigerating industry cycle fluid with the equipment to air discharging used heat, and is closely related with the energy-saving and water-saving that presses for solution in the national economy and social development.

Cooler with the air cooling circulating water is commonly referred to cooling tower.The water that is cooled is limited in and conducts heat in the coil pipe and the outer closed cooling tower that is called that the shower water auxiliary heat dissipation is arranged of pipe.When be cooled in the pipe for other working medium of non-water the time, often be called devaporizer, what working medium had a phase transformation in cooling procedure then is called evaporative condenser, though these three kinds of equipment because the difference of cooling object has different titles, its principle is identical with structure.In this kind equipment, shower water flows from top to bottom, and air flows from bottom to top, and the horizontal separately coil pipe bundle of plunderring, and then is called the adverse current form.

General adverse current closed type cooling column has two level headers up and down, and the coil pipe bundle of some parallel connections is arranged between two collectors.Traditional method of attachment is welding between coil pipe bundle and collector, in case leakage is arranged, it is very inconvenient to keep in repair.The form of being threaded of using instead is arranged now, but install and discharge water, aspect such as exhaust also has and improves.As adopt monolithic coil pipe and collector with being threaded, because consider nut size and spanner operating position, tube pitch is bigger, under certain horizontal cross-section condition, coil pipe bundle then in parallel reduces, and velocity in pipes increases, simultaneously for guaranteeing certain area of dissipation, needing increases tube side, and it is excessive finally to cause managing internal resistance.

Summary of the invention

The utility model will provide a kind of adverse current closed type cooling column that is used for, and installation is changed convenient, and compact conformation helps venting, draining, also can place the coil pipe unit of packing with the radiating effect of raising unit tube area between two tube sides back and forth.

For realizing the purpose of this utility model, the technical scheme of employing is as follows:

A kind of coil pipe unit that is used for adverse current closed type cooling column, comprise four road straight tubes, four road U-shaped pipes row, be characterized in: comprise that also one changes " 3h " conversion head of four, two one are changeed " 3h " conversion head of four connects and composes stagger arrangement respectively with two four road straight tubes up and down straight length up and down, and the spacing of being fixed each pipe by spacer; Between the straight length by the U-shaped pipe come on the vertical plane form about back and forth the coil pipe in parallel of resistances such as journey such as four tunnel.

Straight length and horizontal plane have a downward all the time small inclination, and the import and export of coil pipe unit are in the highest point and the lowest part of this unit respectively.

U-shaped pipe row's centre all is welded with one and is used for coil pipe unit is fixed in bolt on the framework of tower body.

" 3h " conversion head has the interface that can be connected with the level header of adverse current closed type cooling column, and this interface is belled tube-end and adds the nut form, and one section bellows is respectively arranged, fine-tuning angle and length between interface and " 3h " conversion head.

Design feature of the present utility model:

1. in described coil pipe unit, interface adopts belled tube-end to add the nut form, is connected with the level header of adverse current closed type cooling column, and also has one section fine-tuning angle of bellows piece and length behind the interface pipeline section.

2. in described coil pipe unit, by up and down two one change " 3h " conversion head of four, constitute four tunnel straight lengths that become stagger arrangement, and the spacing of fixing each pipe by spacer, again the coil pipe in parallel that hinders by " U-shaped pipe row " back and forth journeys such as four tunnel etc. about forming on the vertical plane.

3. in described coil pipe unit, straight length and horizontal plane have a downward all the time small inclination, and the interface of coil pipe unit is in the highest point and the lowest part of this unit respectively.

4. in described coil pipe unit, " U-shaped pipe row " takes the spot welding location, all is welded with a bolt in the middle of it, is used for coil pipe unit is fixed in the framework of tower body.

The beneficial effects of the utility model are:

Install and change conveniently, compact conformation helps venting, draining, also can improve the radiating effect of unit tube area placing packing between two tube sides back and forth.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the schematic diagram that the utility model is connected with the closed cooling tower collector;

Fig. 3 is a schematic diagram filled between structure of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

A kind of as shown in Figure 1 coil pipe unit that is used for adverse current closed type cooling column, this unit by up and down two one change " 3h shape " conversion head 8 of four, 3, the straight length 4 that connects four road one-tenth stagger arrangement, and the spacing of fixing each pipe by spacer 5, again by " U-shaped " pipe row 7 back and forth coil pipe of four tunnel parallel connections about forming on the vertical plane.The interface end 1,10 of coil pipe unit is refrigeration pipe belled tube-end commonly used and adds the nut form, can connect with the

level header

12,11 of adverse current closed type cooling column.This structure adopts being threaded of coil pipe unit and

collector

11,12, install change convenient, and under the condition of the outer windage permission of pipe, (L when minimum accomplishes that tube center distance L is the triangular arrangement of external diameter of pipe D twice _Min=2D), still can between coil pipe unit interface and adjacent disc pipe unit interface, leave enough spanner working spaces, at this moment the centre-to-centre spacing of coil pipe unit interface and adjacent disc pipe unit interface should be 2L _Min, therefore accomplish the compact conformation (see figure 2).In addition between interface pipeline section 1,10 and " 3h shape " conversion head 3,8, one section bellows piece, 2,9 fine-tuning angle and length are respectively arranged, coil pipe unit is passed through under bolt 6 and the tower body rigid condition, the screw thread of coil pipe unit interface 1,10 and

collector

12,11 docks and tightens very convenient.

The straight length 4 and the horizontal plane of this coil pipe unit have a downward all the time small inclination α (see figure 3), and this angle is recommended as 2～5 °.Put the position of " 3h " conversion head of two one commentaries on classics four, make and the interface 10 of upper header 11 highest point at coil pipe unit, make and the interface 1 of lower collector pipe 12 lowest part at coil pipe unit, from last interface 10 to lower interface 1, all the time be in the decline process along journey, thereby convenient fully exhaust when blank pipe fills working medium is because the existence of inner air tube will reduce the radiating effect of intraductal working medium; Simultaneously also make things convenient for complete emptying intraductal working medium when inactive, in order to avoid bursting by freezing coil pipe in the winter time.

Resistances such as journey such as the coil pipe of four tunnel parallel connections of this coil pipe unit just in time is, be that the flow through distance of every road coil pipe and elbow number average of intraductal working medium equates, then on-way resistance and local resistance also equate, the assignment of traffic of each coil pipe of therefore flowing through also is impartial, help balanced heat radiation.

" U-shaped " of this coil pipe unit pipe row 7 takes the spot welding location, all is welded with a spiral shell 6 in the middle of it, can make on the fine framework that is fixed in tower body of coil pipe unit Stability Analysis of Structures.

The height H of managing row 7 when " U-shaped " is than hour (H _Min=1.73L), be the closed cooling tower of pure tube bank; When " U-shaped " pipe row 7 height is big, under the condition that the outer windage of pipe allows,, can also place packing 13 between two tube sides back and forth, with the radiating effect of raising unit tube area as Fig. 3.

Need to prove that at last Fig. 1 and Fig. 3 are to be embodiment with four tube sides (promptly two back and forth), the utility model can also be three tube sides, five tube sides or six tube sides etc.

Claims

1. A coil unit for a counter-flow closed cooling tower, comprising four straight pipes (4) and four U-shaped pipe rows (7), characterized in that it also includes two "3h" with one turning four Adapter (3, 8), the upper and lower two "3h" adapters (3, 8) with one turn to four are respectively connected with the upper and lower four-way straight pipes (4) to form a staggered straight pipe section, and the positioning piece ( 5) The distance between each tube is fixed; the U-shaped tube row (7) is formed between the straight tube sections on the vertical plane to form four-way parallel coils with equal distance and equal resistance.

2. The coil unit for a counterflow closed cooling tower according to claim 1, wherein the straight pipe section has a small inclination angle always downward with the horizontal plane, and the interface of the coil unit (10 , 1) are respectively at the highest point and the lowest point of the unit.

3. The coil unit for counter-flow closed cooling tower according to claim 1, characterized in that, the center of the U-shaped tube row (7) is welded with a coil unit for fixing the coil unit to the tower body. Bolts (6) on the frame.

4. The coil unit for counter-flow closed cooling tower according to claim 1, characterized in that, said "3h" conversion head (3, 8) has a horizontal header ( 12, 11) to the interface (1, 10), the interface (1, 10) is in the form of a bell-mouth pipe end plus a nut, and is between the interface (1, 10) and the "3h" adapter (3, 8) Each has a section of bellows (2, 9).