CN2643261Y

CN2643261Y - Hollow tube and shell type heat exchanger

Info

Publication number: CN2643261Y
Application number: CN 03271587
Authority: CN
Inventors: 王安顺
Original assignee: SHANDONG BEIER NEW ENERGY CO Ltd
Current assignee: SHANDONG BEIER NEW ENERGY CO Ltd
Priority date: 2003-08-23
Filing date: 2003-08-23
Publication date: 2004-09-22
Anticipated expiration: 2013-08-23

Abstract

The utility model discloses a hollow tube-shell heat exchanger consisting of a shell body and a spiral coil equipped inside the shell body. The shell body is a hollow columniform structure that a central tube is equipped at a center. A safety device is arranged on the shell body. The spiral coil is a double-tube superimposed structure with one end provided with a big-diameter spiral body and the other end provided with a small-diameter spiral body, and is arranged on the central tube. The utility model has a small flow capacity , a high efficiency, a safe use for the heat exchange, which is suitable for various fluid heat exchange cases, such as the gas-liquid, gas-gas and liquid-liquid heat exchanges.

Description

The hollow pipe shell heat exchanger

One, technical field

The utility model relates to heat exchanger, particularly a kind of hollow pipe shell heat exchanger.

Two, background technology

Existing duplex coil heat exchanger is two-layer coil pipe in the shell, and the two ends of every coil pipe are isodiametric substantially, and the problem of its existence is: 1, pipe outside fluid volume is big, and convection cell is a kind of waste; 2, pipe outside flow channel space is big, and fluid can not be limited in closely in the runner, so heat exchanger efficiency is low.

Three, summary of the invention

Problem to be solved in the utility model provides a kind of hollow pipe shell heat exchanger that has improved, and can overcome and avoid the shortcoming or the deficiency that exist in the above-mentioned prior art, and have a heat exchange efficiency height, saves the characteristics of fluid.

The technical scheme that the utility model is dealt with problems is to comprise housing and be installed on spiral coil in the housing, and described housing is the hollow cylindrical structure that the center is provided with central tube, which is provided with safety device, but decompression protection during superpressure makes the heat exchanger safe operation.Described coil pipe is spiral, and the one end is the major diameter conveyor screw, and the other end is that minor diameter conveyor screw, minor spiral body are inserted in the two-tube nestable formula structure in the king bolt body, is installed on the described central tube.

Wherein, described spiral coil is that outer surface is fin shape pipe and makes an end by specific purpose tool and be the major diameter conveyor screw, and the other end is the spirochetal structure of minor diameter.

Wherein, the ratio of the axial spacing h of described coil pipe pipe and housing outside diameter d is 0.01-0.03.Its preferred value is 0.03.

Wherein, described coil pipe goes out two single helical pitches of advancing or singly advances the two helical pitch structures of the middle formula that singly goes out for two.

The utility model compared with prior art, it is strong to have adaptability, can be used for heat exchange between various fluids as gas-water, gas-liquid, gas-gas, liquid-liquid etc.; Also have volume little, save fluid, be not afraid of fouling, the helix tube inner fluid easily forms turbulent flow, good effect of heat exchange, the outer side liquid of pipe can be realized high flow velocities, the heterogeneity in the fluid can be taken out of smoothly, uses advantages such as safety guarantee is arranged.

Four, description of drawings

Fig. 1 is a structural upright schematic diagram of the present utility model;

Fig. 2 is the plan structure schematic diagram of Fig. 1;

Fig. 3 is the structure cross-sectional schematic of Fig. 1;

Fig. 4 is the partial schematic sectional view of Fig. 3;

Fig. 5 is the coil arrangement schematic diagram of Fig. 1.

Five, the specific embodiment

Referring to Fig. 1-Fig. 5, a kind of hollow pipe shell heat exchanger comprises housing 2 and is installed on wherein spiral coil 3,5, and housing 2 is installed the hollow cylindrical structure of central tube 1 for the center, and safety device 6 is installed on housing 2 outer tops.Spiral coil 3,5 is that an end is the major diameter conveyor screw, and the other end is the spirochetal two-tube nestable formula structure of minor diameter, is installed on the central tube 1.Minor spiral end with spiral coil 3,5 during installation is inserted in the king bolt end, the king bolt end is enclosed within outside the minor spiral end, together nestable mutually, make pipe and pipe, be tight the contact between pipe and housing, make the axial distance h of spiral coil 3,5 and the ratio h/d=0.01-0.03 of housing outside diameter d, the preferred value of representing among the figure is 0.02.Spiral coil 3,5 also can connect into in-line pair of helical pitch and flow to for the single helical pitch that goes with each other all the time flows to.Also install in the housing 2 on the housing 2 and the fluid inlet and outlet 4 of annular space between the central tube 1.During operation, fluid in the spiral coil 3,5 shape in the shape of a spiral flows, be easy to form turbulent flow, strengthen the heat exchange effect, the fluid in the annular space of central tube 1 and housing 1, a part flows along each fin slit from top to bottom, another part is rotating mobile along the hand of spiral of spiral coil 3,5, also be very easy to form turbulent flow, two kinds of heat exchanging fluids like this are all in the turbulent condition current downflow, and heat exchange reaches ideal effect.

Claims

1, a kind of hollow pipe shell heat exchanger, comprise housing and be installed on wherein spiral coil, it is characterized in that described housing is the hollow cylindrical structure that central tube is installed at the center, safety device is installed on the housing, described spiral coil is that an end is the major diameter conveyor screw, the other end is the spirochetal two-tube nestable formula structure of minor diameter, is installed on the described central tube.

2, hollow pipe shell heat exchanger according to claim 1 is characterized in that described spiral coil is that outer surface is fin shape pipe and makes an end by specific purpose tool and be the major diameter conveyor screw, and the other end is the spirochetal structure of minor diameter.

3, hollow pipe shell heat exchanger according to claim 1 is characterized in that the axial spacing of described spiral coil pipe and the ratio of housing external diameter are 0.01-0.03.

4, hollow pipe shell heat exchanger according to claim 3 is characterized in that the axial spacing of described spiral coil pipe and the preferred value of housing external diameter ratio are 0.02.

5, hollow pipe shell heat exchanger according to claim 1 is characterized in that described spiral coil goes out two single helical pitches of advancing or singly advances the two helical pitch structures of the tandem that singly goes out for two.