CN207147275U - Multiple flow reduced pipe wound tube heat exchanger - Google Patents

Abstract

The utility model discloses a kind of multiple flow reduced pipe wound tube heat exchanger, including housing, bobbin carriage, tube sheet, core cylinder, around pipe, positioning strip, shell side inlet/outlet pipe, tube side inlet/outlet pipe, pass partition and hanging support, it is characterised in that：For each layer outside core cylinder around pipe, all alternately it is entwined around pipe by least two calibers, positioned with axial spacing of the layer between pipe with positioning strip, adjacent ectonexine is identical around the helical angle of pipe and winding direction is opposite, it is all to be divided into two tube banks according to pipe diameter size around the both ends of pipe, its two per one end restrains two regions for being arranged in same tube sheet, and pass partition is set on tube sheet and in bobbin carriage and separates two regions, its two tube bank per one end can be also arranged on two pieces of small tube sheets.The utility model realizes tube side a plurality of fluids and exchanged heat simultaneously with shell-side fluid, and being alternately arranged around pipe by reducing, increases the radial clearance between pipe, enhances the synthesis heat transfer effect of shell-side fluid.

Description

Multiple flow reduced pipe wound tube heat exchanger

Technical field

Shell-and-tube heat exchanger technical field is the utility model is related to, more particularly to a kind of multiple flow reduced pipe is around pipe type heat transfer Device.

Background technology

Heat exchanger occupies critical role in the energy, power, chemical industry, oil and other many industrial productions.Changed around tubular type Hot device is a kind of shell-and-tube heat exchanger compact-sized, heat exchange efficiency is higher, mainly including bobbin carriage, tube sheet, housing, core cylinder and around The main parts sizes such as pipe, core cylinder are fixed on the center of both ends tube sheet, and as the support of winding tube bank, multilayer is wrapped in around pipe On the outside of core cylinder.

Existing wound tube heat exchanger has a sub-thread stream and the major class of multiple flow two, but no matter which kind of, in wound tube heat exchanger All it is the heat exchanger tube using same caliber, is closely wound outside Guan Xin cylinders, whether axial spacing or horizontal spacing are all non- Often small, so as to cause the flow resistance of shell-side fluid larger, the flow-disturbing effect and heat convection effect of shell-side fluid reduce.Cause This, structure and arrangement in wound tube heat exchanger around pipe have much room for improvement.

The content of the invention

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of multiple flow reduced pipe around pipe type heat transfer Device.

The technical solution adopted in the utility model is：Multiple flow reduced pipe wound tube heat exchanger includes housing, bobbin carriage, pipe Plate, core cylinder, around pipe, positioning strip, shell side inlet/outlet pipe, tube side inlet/outlet pipe, pass partition and hanging support, it is characterised in that： For each layer outside core cylinder around pipe, all it is entwined by two kinds of replacing around pipe for caliber, is used with axial spacing of the layer between pipe Positioning strip positions, and adjacent ectonexine is identical around the helical angle of pipe and winding direction is opposite；It is all big according to caliber around the both ends of pipe Small to be divided into two tube banks, its two tube bank per one end has two kinds of arrangements：First, each section of two tube banks are respectively arranged Pass partition is set in two regions of same tube sheet, and on tube sheet and in bobbin carriage and separates two regions；It is second, every Two tube banks of one end are arranged on two pieces of small tube sheets, and two pieces of small tube sheets set bobbin carriage and inlet/outlet pipe respectively, through envelope Head is simultaneously symmetrically fixed on the 45° angle position of end socket；Two kinds of tube bank arrangements form the bifilar stream of tube side.

Described to be not limited only to use two kinds of calibers around pipe, when using a variety of calibers around pipe, each layer is around pipe outside core cylinder All it is entwined successively around pipe by a variety of calibers, each caliber is used as a tube side around pipe tube bank, each tube bank difference Multiple regions of same tube sheet are arranged in, and pass partition is correspondingly arranged on tube sheet and in bobbin carriage and divides regional Open, so as to form tube side multiple flow.

It is described around pipe use a variety of calibers when, each caliber around pipe restrain use independent small tube sheet, each tubule Plate sets bobbin carriage and inlet/outlet pipe respectively, is fixed on through end socket and symmetrically the 45° angle position of end socket, so as to form tube side multiply Stream.

Every kind of pipe diameter size around pipe is depending on the process conditions of each tube side fluid under actual operating mode.

Compared with prior art, the utility model has the advantages that：First, a variety of calibers use one piece around pipe Subregion arrangement or multiple small tube sheet arrangements, so as to form tube side fluid multiple flow, realize the tube side stream of various working on tube sheet Body exchanges heat with a kind of shell-side fluid simultaneously, alternative multiple common pipe heat exchangers, improves the comprehensive heat exchange effect of shell-side fluid Fruit；Second, outside core cylinder each layer around pipe all using a variety of calibers around pipe successively canoe, increase ectonexine around pipe it Between radial clearance and axial gap with layer between pipe, be significantly reduced shell-side fluid flow resistance, strengthen shell-side fluid Turbulivity and heat convection effect；Third, using four tube plate structures, compared with two-tube harden structure, tube sheet material can be greatly reduced Consumption, mitigate tube sheet weight and heat exchanger gross weight, save manufacturing cost.

Brief description of the drawings

Fig. 1 is the multiple flow reduced pipe wound tube heat exchanger of double tubesheet.

Accompanying drawing 1 marks：1- pass partitions；2- bobbin carriages；3- paths are around pipe tube side outlet；4- shell side inlet tubes；5- housings； 6- tube sheets；7- paths are around pipe tube side inlet tube；The big footpaths of 8- are around pipe tube side inlet tube；9- shell-side outlet pipes；10- paths are around pipe；11- Big footpath is around pipe；12- hanging supports；13- core cylinders；The big footpaths of 14- are around pipe tube side outlet.

Fig. 2 is the multiple flow reduced pipe wound tube heat exchanger of four tube sheets.

Accompanying drawing 2 marks：1- shell side inlet tubes；2- paths export bobbin carriage around the tube side of pipe；3- end sockets；4- tube sheets；5- housings； 6- paths are around pipe；Tube side import bobbin carriage of the 7- paths around pipe；8- shell-side outlet pipes；Tube side import bobbin carriage of the big footpaths of 9- around pipe；10- Big footpath is around pipe；11- core cylinders；12- hanging supports；The big footpaths of 13- export bobbin carriage around the tube side of pipe.

Embodiment

The assembling process of multiple flow reduced pipe wound tube heat exchanger is further illustrated below in conjunction with the accompanying drawings.

By taking the bifilar stream reduced pipe wound tube heat exchanger of double tubesheet as an example, first, the Tube-sheet Welding of core cylinder and both ends is consolidated Fixed, then, each layer is all wrapped in outside core cylinder successively by a variety of calibers around pipe around pipe according to the helical angle of design, then, institute Have and be divided into two tube banks according to pipe diameter size around the both ends of pipe, two tube banks of its one end respectively penetrate two of same tube sheet Area, two tube banks of its other end respectively penetrate Liang Ge areas corresponding to another piece of tube sheet again.

For the bifilar stream reduced pipe wound tube heat exchanger of four tube sheets, first, by the circle of core cylinder tube sheet similar with both ends Frame welding is fixed, and then, each layer is all wrapped in core cylinder successively around pipe by a variety of calibers around pipe according to the helical angle of design Outside, then, all to be divided into two tube banks according to pipe diameter size around the both ends of pipe, two tube banks of its one end are each passed through circular frame Frame and penetrate two pieces of tube sheets, two of its other end tube banks respectively penetrate again corresponding to other two pieces of tube sheets.

Positioned with axial spacing of the layer between pipe with positioning strip, positioning strip is weldingly fixed on bottom plate bar in advance, bottom plate Bar is axial arranged along core cylinder, is weldingly fixed on core cylinder；Adjacent ectonexine around pipe winding direction on the contrary, around the both ends of pipe and pipe Plate junction is fixed using first swollen rear weldering mode；The tube bank around pipe composition of core cylinder and different tube diameters is integrally loaded into housing.

For the bifilar stream reduced pipe wound tube heat exchanger of double tubesheet, both ends tube sheet is fixed with case weld, at both ends One piece of pass partition is set respectively in bobbin carriage, the dividing plate both sides of bobbin carriage respectively correspond to welding tube side inlet and outlet adapter, by band every The both ends bobbin carriage of plate is connected by welding with tube sheet, and at both ends, the top center of bobbin carriage end socket sets the inlet and outlet of shell side Pipe.

For the bifilar stream reduced pipe wound tube heat exchanger of four tube sheets, the circular frame for restraining both ends is consolidated with 4-6 root angle steel Cylinder inboard wall face is scheduled on, two pieces of tube sheets per one end is restrained and docks two small bobbin carriages, two small bobbin carriages are through end socket and weld solid The 45° angle position of end socket is scheduled on, is then connected end socket with housing butt welding, the top center of end socket sets shell side at both ends Inlet/outlet pipe.

When multiple flow reduced pipe wound tube heat exchanger works, shell side heat transferring medium flows into from shell-side fluid inlet tube, in shell Axially washed away in journey different tube diameters around pipe, while with around pipe carry out heat convection, finally from shell side fluid outlet pipe flow out；Pipe Two kinds of heat transferring mediums of journey separately flow into two kinds of calibers around tube side fluid inlet tube corresponding to pipe, heat transferring medium passes through two kinds of pipes Footpath around pipe simultaneously with shell-side fluid heat-shift, finally discharged respectively from two tube side outlets.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

Claims (3)

1. multiple flow reduced pipe wound tube heat exchanger, including housing, bobbin carriage, tube sheet, core cylinder, around pipe, positioning strip, shell side inlet and outlet Pipe, tube side inlet/outlet pipe, pass partition and hanging support, it is characterised in that：For each layer outside core cylinder around pipe, all by two kinds of pipes Alternately being entwined around pipe for footpath, is positioned, spiral of the adjacent ectonexine around pipe with axial spacing of the layer between pipe with positioning strip Angle is identical and winding direction is opposite；It is all to be divided into two tube banks according to pipe diameter size around the both ends of pipe, its pipe of two per one end Beam has two kinds of arrangements：First, two of every one end are restrained two regions for being arranged in same tube sheet, and in tube sheet Pass partition is set in upper and bobbin carriage and separates two regions；Second, two tube banks of every one end are arranged in two pieces of tubules On plate, two pieces of small tube sheets set bobbin carriage and inlet/outlet pipe respectively, are fixed on through end socket and symmetrically the 45° angle position of end socket；Two Kind tube bank arrangement forms the bifilar stream of tube side.

2. multiple flow reduced pipe wound tube heat exchanger according to claim 1, it is characterised in that：It is described to be not limited only to around pipe Using two kinds of calibers, when using a variety of calibers around pipe, each layer is all twined successively around pipe by a variety of calibers around pipe outside core cylinder Around into each caliber is used as a tube side around pipe tube bank, and each tube bank is arranged in multiple areas of same tube sheet Domain, and on tube sheet and be correspondingly arranged pass partition in bobbin carriage and separate regional, so as to form tube side multiple flow.

3. multiple flow reduced pipe wound tube heat exchanger according to claim 1, it is characterised in that：It is described around pipe using a variety of During caliber, being restrained around pipe for each caliber uses independent small tube sheet, and each small tube sheet sets bobbin carriage and inlet/outlet pipe respectively, The 45° angle position of end socket is fixed on through end socket and symmetrically, so as to form tube side multiple flow.