CN86200767U

CN86200767U - Casing pipe type condensation evaporator

Info

Publication number: CN86200767U
Application number: CN 86200767
Authority: CN
Inventors: 钱鸿章
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1986-01-27
Filing date: 1986-01-27
Publication date: 1987-06-10

Abstract

The utility model belongs to the low-temperature technology and the chemical technology and improves the existing tube type condensation evaporators. By replacing the single-layer smooth tube with the reinforced double-layer casing tube, the heat-transfer efficiency is increased, and thus the size of the whole condensation evaporator is reduced. When the condensation evaporator is used in an air-separating plant, the temperature difference can be decreased to less than 1.8K. Since the cost is notably lower than the existing plate type condensation evaporator, the utility model can be applied to various gas mixture separating plants with different sizes and produced by various factories with different scales. The electricity consumption of the whole plant is notably less than the existing tube type and plate type condensation evaporators due to lowered temperature difference.

Description

Casing pipe type condensation evaporator

The utility model belongs to cryogenic technique and chemical industry technology, can be used for air-separating plant and other equipment for separation of gases.

In general air-separating plant and other equipment for separation of gases, condenser/evaporator is all arranged, the at present actual condenser/evaporator that uses has tubular type and board-like two kinds.The efficient of tubular type is very low, board-like cost an arm and a leg and is difficult to be applicable to mini-plant.The utility model is the improvement of existing tubular type condenser/evaporator.In the existing tubular type condenser/evaporator is the plain tube of some individual layers, and efficient is lower, can consult volume in " Refrigeration ﹠ Cryogenic Technique ", the 117-118 page or leaf, and China Machine Press published in 1981 years.

The purpose of this utility model is to improve the efficient of condenser/evaporator, reduces its cost, and can be applicable to the various device of large, medium and small type.

Shell of the present utility model is cylindrical substantially, but top is thicker, two ends evagination (Fig. 1).Fixing four

cards

7,6,5,8 in the enclosure, successively the space in the shell is being divided into five parts: chamber 17, top, epicoele 16, lumen 20, cavity of resorption 18 and chamber, the end 19 perpendicular to center line.There is a circular hole in central authorities at upper face plate 6, there is a central tube 11 in central authorities at lumen, its upper end is welded on the edge of central circular hole of upper face plate 6, space in the central tube is communicated with epicoele, the lower end of central tube is fixed on the lower face plate 5, but does not lead to cavity of resorption in the space in the central tube, but lead to the outside of shell by a tubule 23.Many sleeve pipes 25 that are parallel to central tube are arranged in lumen, and sleeve pipe constitutes (Fig. 2) by the inside and outside two tubes that is nested together.On the relevant position of card 6 and card 5, many small sircle holes are arranged, the two ends up and down of each root outer tube are just passed small sircle hole on the card 6 and the small sircle hole (Fig. 2) on the card 5 respectively, and weld together with card 6 and 5 respectively, make the space between outer tube 21 and the interior pipe 22 interlink with epicoele and cavity of resorption, some littler circular holes are arranged on poppyhead plate 7 and end card 8, the two ends up and down of pipe are just passed small sircle hole on the card 7 and the small sircle hole (Fig. 2) on the card 8 respectively in each root, and weld together with

card

7 and 8, the space in making in the pipe interlinks with chamber, top and chamber, the end.Some fillers in epicoele, have been placed.Also have the plurality of conduits mouth to lead to inside on shell of the present utility model, drawn six among Fig. 1, wherein 9 and 12 lead to lumen, and 10,15,14,13 lead to chamber, top, epicoele, cavity of resorption and chamber, the end respectively.

When being used for air-separating plant, working condition of the present utility model is as follows: the nitrogen of following tower enters lumen and chamber, top respectively through

pipeline

9 and 10, the part that enters the chamber, top enters interior pipe again, two parts nitrogen is condensation on the inner surface 4 of the outer surface 3 of outer tube and interior pipe respectively, and condensed liquid nitrogen is sent into Shang Ta and Xia Ta by

pipeline

12 and 13 respectively.Liquid oxygen is flowed out by last tower, enter cavity of resorption through pipeline 14, enter space and boiling between outer tube and the interior pipe again, oxygen and some drops of producing enter epicoele together, through behind the filler 24, oxygen is flowed out by pipeline 15, and drop then falls into the below of central tube, divides liquid oxygen to be sent to the liquid oxygen circulatory system again with liquid pump by tubule 23 extraction units.

Advantage of the present utility model is coefficient of overall heat transmission height, low, the volume compact of cost, and makes whole gas fractionation unit reduce power consumption.

Owing to adopted bushing type, to compare with board-like with single hose, the coefficient of overall heat transmission of the present utility model is higher; If suitably make intensive treatment on heat-transfer area 3 and 4, its coefficient of overall heat transmission is higher.Because the raising of the coefficient of overall heat transmission, can make the temperature difference dwindle (in air-separating plant can less than 1.8K), thereby reduce pressure tower down, the power consumption of whole device is descended.Compare with existing board-like condenser/evaporator, cost of the present utility model is low significantly, and can be used for high-pressure installation.Except that being used for air-separating plant, the utility model also can be used for natural gas and separates, synthetic ammonia tailgas utilization, oil gas separation and refrigerating plant etc.

Description of drawings, Fig. 1 are overall schematic of the present utility model, chain-dotted line 25 expression sleeve pipes wherein.Fig. 2 is the schematic diagram of single sleeve pipe.In the accompanying drawings, the 1st, outer pipe internal surface, the 2nd, inner tube outer surface, the 3rd, outer tube outer surface, the 4th, interior pipe internal surface, the 5th, lower face plate, the 6th, upper face plate, the 7th, poppyhead plate, the 8th, end card, the 9th, lumen inlet, the 10th, top accent, the 11st, central tube, the 12nd, lumen outlet, the 13rd, end accent, the 14th, following accent, the 15th, last accent, the 16th, epicoele, the 17th, chamber, top, the 18th, cavity of resorption, the 19th, chamber, the end, the 20th, lumen, the 21st, outer tube, the 22nd, interior pipe, the 23rd, tubule, the 24th, filler, the 25th, sleeve pipe.

Making material of the present utility model can be red copper and brass, or aluminium alloy. Can pull on some grooves or some bonding jumpers (being parallel to center line) of burn-oning to the outer surface 3 of outer tube and the inner surface 4 of inner tube, improve the coefficient of overall heat transmission; The inner surface 1 of outer tube and the outer surface 2 of inner tube can be the porous heat-transfer areas. Filler can be copper wire or Raschig ring.

Claims

1, a kind of condenser/evaporator, its shell is roughly cylindrical, top is thicker, the two ends evagination, it is characterized in that having in the shell poppyhead plate (7), upper face plate (6), lower face plate (5) and end card (8) successively the inner space to be separated into top chamber (17), epicoele (16), lumen (20), cavity of resorption (18) and chamber, the end five parts such as (19), a circular hole is arranged in the central authorities of upper face plate (6) perpendicular to center line.There is a central tube (11) in central authorities at lumen (20), the edge joint weld of the central circular hole of the same upper face plate in upper end (6) of central tube (11) is connected together, the same epicoele in inner space (16) of central tube (11) is communicated with, the lower end of central tube (11) is fixed on the lower face plate (5), but does not lead to cavity of resorption (18) inner space of central tube (11), but lead to the outside of shell by a tubule (23), many sleeve pipes (25) that are parallel to central tube (11) are arranged in lumen (20), sleeve pipe (25) is made of outer tube that is nested together (21) and interior pipe (22), on the relevant position of upper face plate (6) and lower face plate (5), many small sircle holes are arranged, on the outer tube (21), following two ends are just passed a small sircle hole on the upper face plate (6) and a small sircle hole on the lower face plate (5) respectively, and same respectively upper face plate (6) and lower face plate (5) weld together, on the relevant position of poppyhead plate (7) and end card (8), some littler circular holes are arranged, on the interior pipe (22), following two ends are just passed a small sircle hole on the poppyhead plate (7) and a small sircle hole on the end card (8) respectively, and weld together with poppyhead plate (7) and end card (8) respectively.

2,, it is characterized in that the bonding jumper (being parallel to center line) that some grooves of pulling out is arranged or burn-on on the inner surface (4) of the outer surface (3) of outer tube and interior pipe according to the described condenser/evaporator of claim 1.

3,, it is characterized in that the inner surface (1) of outer tube and the outer surface (2) of interior pipe are the porous heat-transfer areas according to claim 1 or 2 described condenser/evaporators.