LU500794B1 - Heat exchange apparatus of spiral-baffle winding copper pipe - Google Patents

Abstract

The present invention belongs to the technical field of heat transfer, and provides a heat exchange apparatus of a spiral-baffle winding copper pipe. The heat exchange apparatus utilizes a spiral structure of a baffle plate to guide shell-pass fluid in the heat exchange apparatus, so that the heat exchange fluid is in full contact with a heat exchange pipe bundle, thereby improving the heat transfer performance of a heat exchanger. According to the present invention, the vibration of the heat exchange pipe bundle is excited by the fluid impact to realize the intensified heat transfer; moreover, a copper pipe is difficult to deform, so that the service life can be prolonged, and an effect for automatically removing water scales can also be achieved while the noise hazard is reduced. In the present invention, by designing a brand new structure, the shell-pass fluid is fully utilized to induce the vibration and intensify the heat transfer, so that the present invention has the characteristic of large heat exchange area per unit volume. Furthermore, through flanges and connecting pipes arranged on each inlet and outlet, the present invention can realize multiple- arrangement combined installation of a plurality of heat exchange apparatuses, and flexible assembly and disassembly can be realized according to practical needs.

Description

HEAT EXCHANGE APPARATUS OF SPIRAL-BAFFLE WINDING COPPER PIPE LU500794 Technical Field The present invention relates to the technical field of heat exchange, and in particular relates to a heat exchange apparatus of a spiral-baffle winding copper pipe.

Background A heat exchange apparatus is equipment which transfers heat between media with different temperatures, which can transfer heat from the media with higher temperature to the media with lower temperature, so that the temperature of the media can reach a set index, and the utilization rate of energy can be increased. With the development of science and technology, as the dedicated equipment for medium heat exchange, heat exchangers have been widely applied to the industries of petroleum, chemical engineering, pharmacy and nuclear power.

A heat transfer element in the heat exchange apparatus is changed from a traditional steel pipe to a copper pipe, so that a heat transfer pipe bundle has elasticity. The heat exchange apparatus adopts the technology of intensifying the heat transfer through the fluid-induced vibration, that is, the fluid in a shell pass of the heat exchanger is used to induce the vibration of the heat exchanger pipe bundle to achieve a purpose of intensifying the heat exchange, and no additional energy is consumed. The fluid-induced vibration is a potential intensified heat exchange technology, the key of which is to design an elastic pipe bundle heat exchanger suitable for the shell-pass fluid induced vibration.

The Chinese patent CN106288909A discloses a planar inflexion-type elastic intensified heat exchange pipe bundle and a heat exchanger, which is provided with a first heat exchange pipe and a second heat exchange pipe in a direction different from that of the first heat exchange pipe; and the two heat exchange pipes are used to form the inflexion-type heat exchange pipe bundle, an inlet end and an outlet end of the heat exchange pipe bundle are fixed, and other portions are in a floating state, so that suitable transverse vibration frequency and vibration amplitude are formed to intensify the heat transfer.

However, due to the limitation of the internal structure, the elastic pipe bundle heat exchange apparatus cannot guide the shell-pass fluid, so that the shell-pass fluid cannot fully absorb the heat, and the intensified heat transfer effect is not apparent. Moreover, when a plurality of heat exchange apparatuses are combined for use, the flexibility is low, and the combination way is single. According to the problem of the above heat exchange apparatus, it is urgent to design a heat exchange apparatus with large heat exchange area per unit volume and capable of being combined flexibly.

Summary LU500794 To overcome the defects in the prior art, the present invention provides a heat exchange apparatus of a spiral-baffle winding copper pipe. By designing a brand new structure, the present invention utilizes a spiral structure of a baffle plate to guide shell-pass fluid in the heat exchange apparatus, fully utilizes the shell-pass fluid to induce the vibration and intensify the heat transfer, and has the characteristic of large heat exchange area per unit volume.

According to a technical solution of the present invention, a heat exchange apparatus of a spiral-baffle winding copper pipe includes a left and a right closure heads, pipe-pass outlet and inlet pipes, spiral baffle plates, a winding copper pipe, pipe plate left and right end covers, a pipe plate fixed lantern ring, a pipe plate fixing frame, a barrel, a barrel flange, closure head flanges, gaskets, shell-pass outlet and inlet pipes, connecting pipes, two side supports and an intermediate support. The winding copper pipe bundle is formed by winding four winding copper pipes respectively on inner and outer rings in a circular pattern, and two ends of the pipe bundle are fixedly connected to the pipe plate left and right end covers respectively; two ends of the spiral baffle plate are fixedly connected to the centres of the pipe plate left and right end covers respectively, and the pipe bundle and the baffle plate are distributed alternately; the barrel is fixedly connected between the pipe plate left and right end covers, and the gasket is arranged between the barrel and the pipe plate end cover; and the left and right closure heads are fixedly connected with the pipe plate left and right end covers respectively, and the gasket is arranged between the pipe plate end cover and the closure head. The heat exchange apparatus can be used independently, and the combined installation and use of a plurality of heat exchange apparatuses in a single-column/array form can also be realized through the barrel flange, the closure head flanges, the connecting pipes and the supports arranged on each inlet and outlet.

The technical solution of the present invention further includes: the pipe plate is fixedly connected with four winding copper pipes respectively on the inner and the outer rings and the spiral baffle plates, and the baffle plates and the eight copper pipes are consistent in spiral direction and pitch and are distributed alternately without interfering each other. A cylinder of the spiral baffle plate is a hollow structure, thereby reducing the weight and saving the cost.

The technical solution of the present invention further includes: the winding copper pipe bundle is formed by spirally winding eight copper pipes on the inner and outer rings, and an outer diameter of the winding copper pipe bundle is kept constant, thereby saving the internal space of the heat exchange apparatus, and increasing the space utilization rate; and the whole heat exchange apparatus is proper in volume, and the heat exchange apparatus of the spiral-baffle winding copper pipe can be directly used independently.

The technical solution of the present invention further includes: the barrel is fixed between the pipe plate left and right end covers; the other ends of the pipe plate left and right end covers are connected with the left and right closure heads; the closure head is connected with the closure head flange, the closure head flange is connected with the connecting pipe; and the supports are provided, so that the combined installation and use of the heat exchange apparatuses can be 500794 realized. The present invention has the beneficial effects: the winding pipe bundle in the heat exchange apparatus is made of an elastic material, i.e. copper. A shell/pipe-pass fluid medium induces the copper pipe to vibrate, thereby intensifying the turbulent flow characteristic of the fluid media near the wall inside/outside the pipe, and realizing the intensified heat transfer. Compared with other materials, when the copper pipe vibrates, the fatigue damage is unlikely to occur, and the copper pipe has the characteristics of reducing noise and automatically removing scales and can be used for a long time; the pipe bundle adopts a spiral winding structure, and the fluid medium in the pipe generates secondary flow during the flowing, which can further realize the intensified heat transfer. By utilizing the spiral structure of the baffle plate, the shell-pass fluid can be guided, so that the shell pass-fluid absorbs the heat fully, thereby further improving the heat transfer effect; the heat exchange apparatus of the spiral-baffle winding copper pipe is installed horizontally, so that the pressure drop of each of the pipe outlet and inlet is almost the same, which is favourable for the uniformity and consistence of the vibration effects of all pipes; and the single heat exchange apparatus can be used directly, and the combined installation of a plurality of heat exchange apparatuses in a single-column/array form can be realized through the flanges and connecting pipes on each outlet/inlet, so that the flexible assembly and disassembly can be realized according to practical needs.

Description of Drawings To more clearly describe the technical solutions in embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly presented below. Apparently, the following drawings only show some embodiments of the present invention. For those ordinary skilled in the art, other drawings can also be obtained according to these drawings without contributing creative work. It shall be understood that the specific embodiments described herein are merely used to explain the present invention rather than limiting the present invention. FIG. 1 is a structural schematic diagram of the present invention. FIG. 2 is a structural schematic diagram of a winding copper pipe in the present invention. FIG. 3 is a structural schematic diagram of a spiral baffle plate in the present invention. FIG. 4 is an internal structural diagram of the present invention. FIG. 5 is a structural schematic diagram of combined installation in a 2x2 arrangement pattern of the present invention. Reference numerals: 1, left closure head; 2, gasket; 3, pipe plate left end cover; 4, spiral baffle plate; 5, outer winding pipe; 6, inner winding pipe; 7, shell-pass outlet pipe; 8, barrel flange; 9, pipe plate right end cover; 10, closure head flange; 11, pipe-shell inlet pipe; 12, right closure head; 13, winding pipe bundle; 14, barrel; 15, shell-pass inlet pipe; 16, pipe-pass outlet pipe; 1500704 connecting pipe; 18, side support; 19, intermediate support.

Detailed Description In order to make those skilled in the art better understand the solutions of the present invention, the present invention is further described in detail below in combination with the accompanying drawings and specific implementation. Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, FIG. 1 is a structural schematic diagram of the present invention; FIG. 2 is a structural schematic diagram of a winding copper pipe in the present invention; FIG. 3 is a structural schematic diagram of a spiral baffle plate in the present invention; FIG. 4 is an internal structural diagram of the present invention; and FIG. 5 is a structural schematic diagram of combined installation in a 2x2 arrangement pattern of the present invention.

A heat exchange apparatus of a spiral-baffle winding copper pipe includes a left closure head 1, gaskets 2, a pipe plate left end cover 3, spiral baffle plates 4, an outer winding pipe 5, an inner winding pipe 6, a shell-pass outlet pipe 7, a barrel flange 8, a pipe plate right end cover 9, closure head flanges 10, a pipe-pass inlet pipe 11, a right closure head 12, a winding pipe bundle 13, a barrel 14, a shell-pass inlet pipe 15, a pipe-pass outlet pipe 16, connecting pipes 17, side supports 18 and an intermediate support 19. The winding pipe bundle 13 is composed of four winding copper pipes respectively on inner and outer rings and is fixedly connected between the pipe plate left end cover 3 and the pipe plate right end cover 9. The barrel 14 is fixedly connected between the pipe plate left end cover 3 and the pipe plate right end cover 9. The left closure head 1 is fixedly connected with the pipe plate left end cover 3. The right closure head 12 is fixedly connected with the pipe plate right end cover 9. The gasket 2 is arranged respectively between the barrel 14 and the pipe plate left and right end covers 3 and 9, between the left and right closure heads 1 and 12, and between the pipe plate left and right end covers 3 and 9. The gaskets are conducive to ensuring the air tightness of the heat exchange apparatus.

The winding pipe bundle 13 is provided with eight winding copper pipes, and the inner and the outer rings are respectively provided with four winding copper pipes that are fixed on the pipe plate at equal intervals in a circular pattern. The winding pipe bundle 13 is made of copper, which is conducive to prolonging the service life and reducing the noise hazard and can automatically remove water scales. By adopting the spiral winding shape, fluid in the pipe flows spirally to generate secondary flow under the action of a centrifugal force, thereby further realizing the intensified heat transfer. The complex pipe bundle structure with the shape intensifies the turbulent flow characteristic of the shell-pass fluid, thereby further realizing the intensified heat transfer.

The spiral baffle plates 4 and the winding pipe bundles 13 are the same in spiral direction and pitch and distributed at equal intervals. A centre cylinder of the baffle plate is a hollow structure, which is conducive to reducing the weight and saving the cost. The baffle plate adopts the spiral structure, which can guide the shell-pass fluid, so that the shell-pass fluid fully absorbs, 500794 the heat, thereby improving the heat transfer performance of the heat exchange apparatus.

The closure head flanges 10 are connected with the connecting pipes 17. The upper end of the support is connected with the lower end of another heat exchange apparatus support, which 5 is convenient for fixing a plurality of heat exchange apparatus and favourable for realizing the combined installation of the heat exchange apparatuses in a single-column/array form.

In on-site use, prior to the installation, the heat exchange apparatus of the spiral-baffle winding copper pipe needs to be subjected to a pressure test and an air tightness test. A hot medium flows in the pipe-pass inlet pipe, the winding pipe bundle and the pipe-pass outlet pipe, and the flow path is referred to as a pipe pass; and a cold medium flows in gaps among the shell- pass inlet pipe, the winding pipe bundle, the shell-pass outlet pipe and the barrel, and the flow path is referred to as a shell pass. The heat exchange apparatus of the spiral-baffle winding copper pipe is installed horizontally, and when a plurality of heat exchange apparatuses of the spiral-baffle winding copper pipes are combined for work, the pipe-pass hot medium flows in via a pipe-pass inlet, and flows out via a pipe-pass outlet, and the shell-pass cold medium flows in from a bottom shell-pass inlet to make the cold medium fully fill the shell, and then the cold medium flows out from a top shell-pass outlet. The cross flow of the shell-pass medium and the pipe-pass medium is realized, which is conducive to achieving better heat exchange effect.

Under the condition that the embodiments are not contradictory, at least some technical solutions in the embodiments can be recombined to form the essential technical solution of the present invention. Of course, the embodiments can also be cited or included by each other. Moreover, it should be noted that when the technical means described in the embodiments are recombined by those skilled in the art, the adaptive adjustment and modification shall fall within the protection scope of the present invention.

The technical principle of the present invention is described above in combination with specific implementation. However, it should be stated that the above descriptions are only used to explain the principle of the present invention and shall not be explained as the specific limitation to the protection scope of the present invention in any form. Based on the explanation, other specific implementation or equivalent replacement of the present invention can be conceived by those skilled in the art without contributing creative labour, and shall fall within the protection scope of the present invention.

Claims (4)

1. A heat exchange apparatus of a spiral-baffle winding copper pipe, comprising a left closure head (1), gaskets (2), a pipe plate left end cover (3), spiral baffle plates (4), an outer winding pipe (5), an inner winding pipe (6), a shell-pass outlet pipe (7), a barrel flange (8), a pipe plate right end cover (9), closure head flanges (10), a pipe-pass inlet pipe (11), a right closure head (12), a winding pipe bundle (13), a barrel (14), a shell-pass inlet pipe (15), a pipe-pass outlet pipe (16), connecting pipes (17), side supports (18) and an intermediate support (19), wherein the winding pipe bundle (13) is composed of four winding copper pipes on inner and outer rings respectively and is fixedly connected between the pipe plate left end cover (3) and the pipe plate right end cover (9); and the left closure head (1) is fixedly connected with the pipe plate left end cover (3), the right closure head (12) is fixedly connected with the pipe plate right end cover (9), the gasket (2) is arranged respectively between the barrel (14) and the pipe plate left and right end covers (3) and (9), and between the left and right closure heads (1) and (12) and the pipe plate left and right end covers (3) and (9), and the gaskets are conducive to ensuring the air tightness of the heat exchange apparatus.

2. The heat exchange apparatus of the spiral-baffle winding copper pipe according to claim 1, wherein the pipe plate left end cover (3) and the pipe plate right end cover (9) form a pipe plate to fix the winding pipe bundle (13), and the left and right end covers (3) and (9) of the pipe plate are provided with an inlet and outlet of the winding pipe bundle (13).

3. The heat exchange apparatus of the spiral-baffle winding copper pipe according to claim 1, wherein the winding pipe bundle (13) is composed of an inner and outer rings of eight winding copper pipes at equal intervals in a circular pattern, and the winding pipe bundle (13) is fixed on the pipe plate.

4. The heat exchange apparatus of the spiral-baffle winding copper pipe according to claim 1, wherein the barrel (14) is fixed between the pipe plate left end cover (3) and the pipe plate right end cover (9); the left end of the pipe plate left end cover (3) is connected with the left closure head (1); the right end of the pipe plate right end cover (9) is connected with the right closure head (12); both the left closure head (1) and the right closure head (12) are connected with the closure head flange (10); the closure head flanges (10) are connected with the connecting pipes (17); and the combined installation and use of the heat exchange apparatuses in a 2x2 arrangement pattern are realized through the side supports (18) and the intermediate support (19).