CN2323337Y

CN2323337Y - Horizontal condenser

Info

Publication number: CN2323337Y
Application number: CN 97245160
Authority: CN
Inventors: 王启杰; 刘元璋; 王鹏程
Original assignee: Yantai Moon Co ltd
Current assignee: Yantai Moon Co ltd
Priority date: 1997-09-11
Filing date: 1997-09-11
Publication date: 1999-06-09
Anticipated expiration: 2007-09-11

Abstract

The utility model discloses a horizontal condenser which is an ammonia condenser used in an ammonia cooling device. The horizontal condenser is mainly realized by improving a heat exchange pipe 8 on the structural basis of the existing horizontal condenser. The utility model is characterized in that a spiral groove 16 is arranged on the heat exchange pipe 8. The spiral groove 16 is on the outer wall of the heat exchange pipe 8, which is concave. The inner wall of the heat exchange pipe 8 is convex. The concave depth e of the spiral groove 16 is 0.6-1.8 mm. The thread pitch P of the spiral groove 16 is 8-16 mm. Due to the fact that a spiral grooved tube is used as the heat exchange pipe. The heat transfer capability of the horizontal condenser is remarkably increased. The heat transfer capability of the horizontal condenser is two times the heat transfer capability of the present light pipe condenser. The utility model is a relatively ideal condenser which is used in the ammonia cooling device at present.

Description

Horizontal condenser

The horizontal condenser that the utility model relates to is the ammonia condenser that uses in a kind of ammonia refrigerating installation, belongs to technical field of heat exchange.

The condenser that uses in the present ammonia refrigerating installation, the heat-exchange tube in the condenser belongs to the plain tube of not doing any processing, and heat transfer efficiency is low, and is bulky, and it is many to expend steel.

The purpose of this utility model is intended to improve above-mentioned deficiency, and a kind of heat transfer efficiency height is provided, and volume is little, the horizontal condenser of compact conformation.

In order to achieve the above object, the utility model is that the plain tube by heat exchanging is improved to the tube bank that spiral grooved tube forms and realizes on the basis of existing horizontal condenser, it has left end cap 1, left tube sheet 2, housing 3, safety valve 4, purge valve 5, gripper shoe 6, intake valve 7, heat exchanger tube 8, Pressure gauge 9, balance port loose joint 10, right tube sheet 11, right end cap 12, liquid valve 13, right support abutment 14, left support abutment 15, be characterized in establishing on the heat exchanger tube 8 helicla flute 16, helicla flute 16 is concavity at heat exchanger tube 8 outer walls, and inwall is convex.

In order to achieve the above object, helicla flute 16 recessed dark e are 0.6-1.8mm, and pitch P is 8-18mm.

The operation principle of horizontal condenser: the HTHP ammonia steam that ammonia refrigerating compressor is discharged is through behind the ammonia oil separator, remove the lubricating oil that has in the steam, enter the condenser shell side through intake valve 7, be fixed in a left side, right tube sheet 2, condensation on the heat-exchanging tube bundle on 11, the liquid that is condensed into is flowed out by housing 3 bottom liquid valves 13, enter evaporator evaporation after the throttling, vaporized gas is sucked by compressor, discharge after compression, the constantly circulation that so goes round and begins again, cooling water is entered by the left end cap lower water inlet, be subjected to a left side, right end cap 1, the guiding of the pass partition in 12 bobbin carriages, in the tube bank of condenser, be multipaths and flow back and forth, absorb the heat of ammonia steam, be heated after right end cap top delivery port flows out, after the cooling tower cooling, enter condenser by the left end cap lower water inlet again, so go round and begin again, constantly circulation.

Compared with prior art, because heat exchanger tube of the present utility model employing is the spiral grooved tube that has certain geometric parameter, heat-transfer capability obviously increases, 40 ℃ of condensation temperatures, 32 ℃ of cooling water inlet temperatures, under the condition of cooling water flow velocity 1m/s, its heat transfer coefficient can reach 2100w/m ²K, bigger one times than present light pipe condenser, transmitting under the identical heat condition, heat transfer area can reduce half, saves steel about 40%, saves cost about 45%, the volume of condenser can reduce about 40%, and the utility model is present a kind of more satisfactory horizontal condenser.

Description of drawings:

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

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the heat exchange tube structure schematic diagram.

Fig. 4 is Fig. 3 I portion structure for amplifying schematic diagram.

In order to understand better and to implement, it is as follows with the accompanying drawing to be that embodiment further specifies below: the left end cap 1 among Fig. 1, left tube sheet 2, housing 3, safety valve 4, purge valve 5, gripper shoe 6, intake valve 7, Pressure gauge 9, balance port loose joint 10, right tube sheet 11, right end cap 12, liquid valve 13, right support abutment 14, left support abutment 15 belong to existing structure of condenser parts, with the bolting, other parts all weld between left and right end cap 1,12 and left and right tube sheet 2,11.

Heat exchanger tube 8 among Fig. 2 can adopt steel pipe rolling forming on special purpose machine tool of diameter 18-38mm, establishes helicla flute 16 on the heat exchanger tube 8, and helicla flute 16 is concavity at heat exchanger tube 8 outer walls, and inwall is convex, and the degree of depth e of helicla flute 16 is 0.6-1.8mm, and pitch P is 8-16mm.The arrangement mode of heat exchanger tube 8 can be equidistant arrangement, also can be that the big spacing of upper bundle is arranged, and the little spacing of lower tube bundle is arranged, and the number of heat exchanger tube 8 can calculate according to the coefficient of heat transfer of condenser to be determined.

Owing to establish helicla flute on the heat exchanger tube 8, helicla flute is concavity at heat exchanger tube 8 outer walls, inwall is convex, can satisfy the requirement of augmentation of heat transfer simultaneously of the inside and outside wall of condenser, at the heat exchanger tube inwall, the helicla flute that protrudes makes water increase tangential velocity component at inwall, caused additional secondary circulation, significantly improved the coefficient of heat transfer of water at inwall, at the outer wall of heat exchanger tube, because the surface tension of ammonia is big, Gorlin's effect is listed as by force in the lattice that the helical groove of certain curvature causes, make the condensate film reduced thickness, condensation heat transfer is able to remarkable reinforcement.

The utility model is specially adapted to ammonia refrigerating installation.

Claims

1, a kind of horizontal condenser, it has left end cap (1), left tube sheet (2), housing (3), safety valve (4), purge valve (5), gripper shoe (6), intake valve (7), heat exchanger tube (8), Pressure gauge (9), balance port loose joint (10), right tube sheet (11), right end cap (12), liquid valve (13), right support abutment (14), left support abutment (15), it is characterized in that establishing on the heat exchanger tube (8) helicla flute (16), helicla flute (16) is concavity at heat exchanger tube (8) outer wall, and inwall is convex.

2, by the described horizontal condenser of claim 1, it is characterized in that the recessed dark e of helicla flute (16) is 0.6-1.8mm, pitch P is 8-16mm.