CN204574890U

CN204574890U - A kind of biliquid heat-exchanger rig

Info

Publication number: CN204574890U
Application number: CN201520112142.7U
Authority: CN
Inventors: 卢晓丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-02-15
Filing date: 2015-02-15
Publication date: 2015-08-19
Anticipated expiration: 2025-02-15

Abstract

The utility model discloses a kind of biliquid heat-exchanger rig, aim to provide a kind of heat exchange that can effectively realize between two kinds of liquid, there is structural temperature difference compensation ability, can prevent from causing impaired heat-exchanger rig because thermal (temperature difference) stress is excessive between housing and heat exchanger tube.It comprises tube side inlet pipe, tube side goes out pipe, many heat exchanger tubes, outer cover of heat exchanger body, shell side inlet pipe, shell sides go out pipe, outer cover of heat exchanger body is made up of end socket, shell head, bobbin carriage, fixed tube sheet is provided with between shell head and bobbin carriage, floating tube sheet is provided with between end socket and bobbin carriage, bobbin carriage and end socket form neck tube at joint, floating tube sheet is within neck tube, sealed to each other and be slidably connected between floating tube sheet and neck tube, and heat exchanger tube two ends are communicated to end socket inside respectively, shell head is inner.The beneficial effects of the utility model are: can by the yielding feature in expansion joint place, and the function that floating tube sheet can slide in neck tube is to realize structural temperature difference compensation, avoids thermal (temperature difference) stress excessive and the structural failure caused.

Description

A kind of biliquid heat-exchanger rig

Technical field

The utility model belongs to chemical industry technical field of heat exchange, particularly relates to a kind of biliquid heat-exchanger rig.

Background technology

Heat exchanger is the process equipment carrying out heat transmission, and it is widely used in oil refining, petrochemical industry and the industry of other vague generalization.Such as cooling, condensation, heating, evaporation and Waste Heat Recovery etc.Heat exchanger, due to the diversity (corrosivity, temperature, pressure, medium, impurity, heat exchange amount etc.) of service condition, also needs rational structure and form.

Tubular heat exchanger (shell-and-tube heat exchanger) is one of current most widely used heat-transfer equipment, the mode that two kinds of liquid carry out heat exchange is by it: a kind of liquid flows through in housing, outside heat exchanger tube, another kind of liquid flows through in heat exchanger tube, carry out heat exchange inside and outside heat exchanger tube, thus realize its function.

Current tubular heat exchanger; although heat exchange function can be realized preferably; but in actual applications; often have shell wall and the large situation of the tube wall temperature difference factors such as (caused) two kinds of liquid temperature differentials are larger; cause the obviously different by thermal expansion length of housing and heat exchanger tube; sizable thermal (temperature difference) stress and interstructural squeeze and destroy power can be produced between housing and heat exchanger tube, cause equipment to be badly damaged.

Utility model content

The utility model is to overcome deficiency of the prior art, provide a kind of heat exchange that can effectively realize between two kinds of liquid, there is in the course of work structural temperature difference compensation ability, can prevent from causing impaired heat exchanger because thermal (temperature difference) stress is excessive between housing and heat exchanger tube.

To achieve these goals, the utility model is by the following technical solutions:

A kind of biliquid heat-exchanger rig, comprise tube side portion, shell side portion, some supports, described tube side portion comprises tube side inlet pipe, tube side goes out pipe, many heat exchanger tubes, described shell side portion comprises horizontal outer cover of heat exchanger body, shell side inlet pipe, shell side goes out pipe, described outer cover of heat exchanger body is by end socket, shell head, two ends are that the bobbin carriage of port is formed jointly, fixed tube sheet is provided with between described shell head and bobbin carriage, floating tube sheet is provided with between described end socket and bobbin carriage, described bobbin carriage one end passage port is provided with ladder flange edge, described end socket is provided with ladder flange edge, ladder flange edge on bobbin carriage turns over edge seal with the ladder on end socket and docks, and form neck tube at joint, neck tube bore is greater than bobbin carriage bore, described floating tube sheet is within neck tube, sealed to each other and be slidably connected between described floating tube sheet and neck tube, sliding contact surface is the inner tubal wall face of neck tube, described heat exchanger tube two ends are connected to fixed tube sheet, on floating tube sheet, described heat exchanger tube is in bobbin carriage, one end of heat exchanger tube is communicated to end socket inside, the other end of heat exchanger tube is communicated to shell head inside, described tube side inlet pipe, tube side goes out Guan Jun and is connected on shell head, described shell side inlet pipe, shell side goes out Guan Jun and is connected on bobbin carriage, shell head inside is divided into the tube side influent stream chamber be communicated with tube side inlet pipe by one piece of tube side cutoff board, go out with tube side the tube side that pipe is communicated with to go out to flow chamber, described shell side inlet pipe is in bobbin carriage top, the feed liquor direction of shell side inlet pipe is from top to bottom, gear liquid protection transverse slat is provided with in described bobbin carriage, the feed liquor direction of described shell side inlet pipe is towards gear liquid protection transverse slat, described gear liquid protection transverse slat is connected to shell side inlet pipe lower end by protection connecting plate, the inner tubal wall face of described neck tube is provided with oblique seal ring portion, described oblique seal ring portion is between floating tube sheet and end socket, described oblique seal ring portion has and tiltedly seals low side, oblique envelope is high-end, described oblique envelope is high-end turns over EDGE CONTACT with the ladder on end socket, described oblique envelope low side contacts with floating tube sheet.

As preferably, be provided with some deflection plates in described bobbin carriage, described deflection plate is vertical with the length direction of bobbin carriage, and described deflection plate one end is connected with bobbin carriage inwall, forms circulation interval between the other end and bobbin carriage.

As preferably, described bobbin carriage is provided with expansion joint, described expansion joint wall thickness is less than bobbin carriage wall thickness, it is two half chests sections that bobbin carriage cuts off by described expansion joint, described expansion joint comprises two oblique ring flat-plates that close up, a covering ring flat-plate, two oblique ring flat-plates that close up are connected in two half chests sections, between the tank wall of two half chests sections, gap is expansion notch, the horizontal width of described expansion notch is less than two minimum level spacing closed up between oblique ring flat-plate, and the oblique ring flat-plate of described closing in, covering ring flat-plate, half chests section are formed in one structure.

As preferably, agitating vane is provided with in described tube side influent stream chamber, described agitating vane comprises some agitation blades, a rotating shaft be rotationally connected with shell head, described rotating shaft one end is stretched in the wall of end socket, the rotating shaft other end stretches in fixed tube sheet, and the feed liquor direction of described tube side inlet pipe is towards agitating vane.

As preferably, described support comprise horizonal base plate, be connected with horizonal base plate two pieces support swash plate, be provided with between two pieces of support swash plates and shore leaf spring, described bobbin carriage is provided with stretches spacing rib under some, every stretching for a pair time between spacing rib forms support slot, a corresponding support slot of support, two pieces in a support support swash plate top and stretch in the support slot corresponding with this support.

The beneficial effects of the utility model are: the heat exchange effectively carrying out two kinds of liquid, when heat exchanger shell and heat exchanger tube are subject to the difference of thermal expansion length larger, can by the yielding feature in expansion joint place, and the function that floating tube sheet can slide in neck tube is to realize structural temperature difference compensation, avoid thermal (temperature difference) stress excessive and the structural failure caused, support has adaptive adjustment capability, too much restriction can not be caused to bobbin carriage wall, can prevent support and bobbin carriage contact position local stress excessive, there is agitating vane structure, impurities adhere can be avoided to gather, ensure that in heat exchanger tube, circulation is smooth and easy.

Accompanying drawing explanation

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

Fig. 2 is the partial enlarged drawing of Fig. 1;

Fig. 3 is the structural representation at the utility model expansion joint place;

Fig. 4 is the structural representation at the utility model support place;

Fig. 5 is the structural representation at the utility model gear liquid protection transverse slat place.

In figure: support 1, tube side inlet pipe 2, tube side goes out pipe 3, heat exchanger tube 4, shell side inlet pipe 5, shell side goes out pipe 6, end socket 7, shell head 8, bobbin carriage 9, fixed tube sheet 10, floating tube sheet 11, ladder flange edge 12, neck tube 13, tube side cutoff board 14, deflection plate 15, expansion joint 16, close up oblique ring flat-plate 17, covering ring flat-plate 18, expansion notch 19, agitation blades 20, rotating shaft 21, support swash plate 22, shore leaf spring 23, under stretch spacing rib 24, tube side influent stream chamber 25, tube side goes out to flow chamber 26, gear liquid protection transverse slat 27, protection connecting plate 28, oblique seal ring portion 29.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, in embodiment shown in Fig. 5, a kind of biliquid heat-exchanger rig, comprise tube side portion, shell side portion, some supports 1, described tube side portion comprises tube side inlet pipe 2, tube side goes out pipe 3, many heat exchanger tubes 4, described shell side portion comprises horizontal outer cover of heat exchanger body, shell side inlet pipe 5, shell side goes out pipe 6, described outer cover of heat exchanger body is by end socket 7, shell head 8, two ends are that the bobbin carriage 9 of port is formed jointly, fixed tube sheet 10 is provided with between described shell head and bobbin carriage, floating tube sheet 11 is provided with between described end socket and bobbin carriage, described bobbin carriage one end passage port is provided with ladder flange edge 12, described end socket is provided with ladder flange edge, ladder flange edge on bobbin carriage turns over edge seal with the ladder on end socket and docks, and form neck tube 13 at joint, neck tube bore is greater than bobbin carriage bore, described floating tube sheet is within neck tube, sealed to each other and be slidably connected between described floating tube sheet and neck tube, sliding contact surface is the inner tubal wall face of neck tube, described heat exchanger tube two ends are connected to fixed tube sheet, on floating tube sheet, described heat exchanger tube is in bobbin carriage, one end of heat exchanger tube is communicated to end socket inside, the other end of heat exchanger tube is communicated to shell head inside, described tube side inlet pipe, tube side goes out Guan Jun and is connected on shell head, described shell side inlet pipe, shell side goes out Guan Jun and is connected on bobbin carriage, shell head inside is divided into the tube side influent stream chamber 25 be communicated with tube side inlet pipe by one piece of tube side cutoff board 14, go out with tube side the tube side that pipe is communicated with and go out to flow chamber 26, described shell side inlet pipe is in bobbin carriage top, the feed liquor direction of shell side inlet pipe is from top to bottom, gear liquid protection transverse slat 27 is provided with in described bobbin carriage, the feed liquor direction of described shell side inlet pipe is towards gear liquid protection transverse slat, described gear liquid protection transverse slat is connected to shell side inlet pipe lower end by protection connecting plate 28, the inner tubal wall face of described neck tube is provided with oblique seal ring portion 29, described oblique seal ring portion is between floating tube sheet and end socket, described oblique seal ring portion has and tiltedly seals low side, oblique envelope is high-end, described oblique envelope is high-end turns over EDGE CONTACT with the ladder on end socket, described oblique envelope low side contacts with floating tube sheet.

A kind of liquid enters from tube side inlet pipe, and the heat exchange pipe group through being communicated with tube side influent stream chamber flows into end socket, then warp and tube side go out to flow heat exchange pipe group that chamber is communicated with, tube side goes out pipe and flows out; Another kind of liquid flows into from shell side inlet pipe, and go out pipe from shell side after flowing through bobbin carriage inside and flow out, two kinds of liquid carry out heat exchange by the tube wall of heat exchanger tube, rational in infrastructure, heat transfer efficient.In order to ensure heat exchange efficiency; inlet hydraulic, liquid feeding end flow velocity all can not be too little in many cases; liquid enters after in bobbin carriage from shell side inlet pipe; directly can impact inner heat exchanger tube; easily cause stressed excessive, the distortion of heat exchanger tube; gear liquid protection transverse slat blocks the direct impact of shell side inlet pipe feed liquor; initial for liquid feed liquor flows to and changes into the direction being approximately parallel to heat exchanger tube by mating protection connecting plate together; thus exchange heat pipe and bobbin carriage inner structure define the protection of effective protecting against shock; improve job stability, extend heat exchanger tube service life.

When outer cover of heat exchanger body (being mainly bobbin carriage) is large with the temperature difference of heat exchanger tube, difference in elongation of being heated is obvious, heat exchanger tube can shorten or extends by relative outer cover of heat exchanger body significantly, now, the heat exchanger tube of length variations can with floating tube sheet together transverse shifting, floating tube sheet slides along neck tube axis direction in neck tube, provide structural temperature difference compensation function, thus eliminate heat exchanger tube length and relatively change large and structure extruding that is that cause, greatly reduce thermal (temperature difference) stress, ensure integrally-built stablize firm.

Wherein, sliding contact surface is the inner tubal wall face of neck tube, and this face is relative sliding face, it is again press seal face, so on sliding contact surface, the packing layer of suitable material also can be set when needing, make the slip between packing layer and floating tube sheet more smooth and press seal better effects if.This point can be selected according to the actual requirements.Why traversing floating tube sheet is, drive floating tube sheet to move because heat exchanger tube is heated to extend, and end socket place is owing to being heated, also can deformed dilation, when the fluid temperature that two kinds of liquid especially flow through tube side portion is not very high, end socket swell increment is limited, sealing now between tube sheet and neck tube still can ensure preferably, but when the fluid temperature that two kinds of liquid especially flow through tube side portion is higher, floating tube sheet can move many distances towards end socket, now end socket expanded by heating amount is larger, neck tube internal diameter variable quantity is larger, sealing between floating tube sheet and neck tube may be caused to become very poor even do not seal, now due to the existence in oblique seal ring portion, can effectively ensure being adjacent between floating tube sheet lateral margin and neck tube inwall, laminating, abundant guarantee sealing, maintenance work process stabilization.

Be provided with some deflection plates 15 in described bobbin carriage, described deflection plate is vertical with the length direction of bobbin carriage, and described deflection plate one end is connected with bobbin carriage inwall, forms circulation interval between the other end and bobbin carriage.At the liquid of bobbin carriage internal circulation, can the runner institute water conservancy diversion that is divided into by deflection plate, thus form the longer circulation passage of relative length, in a disguised form reduce circulation bore, increase heat exchanger time, improve heat exchange efficiency well.

Described bobbin carriage is provided with expansion joint 16, described expansion joint wall thickness is less than bobbin carriage wall thickness, it is two half chests sections that bobbin carriage cuts off by described expansion joint, described expansion joint comprises two oblique ring flat-plates 17 that close up, a covering ring flat-plate 18, two oblique ring flat-plates that close up are connected in two half chests sections, between the tank wall of two half chests sections, gap is expansion notch 19, the horizontal width of described expansion notch is less than two minimum level spacing closed up between oblique ring flat-plate, and the oblique ring flat-plate of described closing in, covering ring flat-plate, half chests section are formed in one structure.Expansion joint place wall thickness is relatively thin, and bobbin carriage is split, it occurs as flexible structure, and effect is exactly improve bobbin carriage by distortion adaptive capacity during thermal stretching and easy extensibility, place is the same with floating tube sheet, also plays the effect of structural temperature difference compensation.When outer cover of heat exchanger body (being mainly bobbin carriage) is by thermal stretching, because its wall thickness is much larger than heat exchanger tube, many times its elongation is obviously not as good as the elongation of heat exchanger tube, now due to the existence of flexible structure expansion joint, bobbin carriage can be reduced and extend difficulty, assist and make up the too small shortcoming of outer cover of heat exchanger body elongation, reduce thermal (temperature difference) stress between structure.

Agitating vane is provided with in described tube side influent stream chamber, described agitating vane comprises 20, the rotating shaft 21 be rotationally connected with shell head of some agitation blades, described rotating shaft one end is stretched in the wall of end socket, the rotating shaft other end stretches in fixed tube sheet, and the feed liquor direction of described tube side inlet pipe is towards agitating vane.In many cases, all containing impurity in liquid, especially some small size impurity or cotton-shaped impurity, common filtration cannot be separated, can not only spend high cost to be removed in order to the income of heat exchange, therefore during heat exchange, it can will inevitably retain in a liquid.Liquid enters a tube side influent stream chamber from tube side inlet pipe, in theory, if small size impurity, cotton-shaped impurity can be evenly distributed in liquid, just can flow into heat exchanger tube together along with liquid and flow out smoothly, can not cause partial occlusion.But in fact, due to various factors, impurity might not be evenly distributed in liquid, especially the bore in tube side influent stream chamber is obviously greater than tube side inlet pipe, now flows decrease, cotton-shaped impurity, the easy temporary deposition of small size impurity, adhered to one another, form the impurity that volume is larger, the larger impurity of volume in this time will block the relatively very little heat exchanger tube in aperture, causes heat exchange not smooth.And the existence of agitating vane, liquid is entered from tube side inlet pipe and first impacts agitation blades afterwards, drive agitating vane rotates, and in rotation process, is formed and stir stream in tube side influent stream chamber, make cotton-shaped impurity, small size impurity cannot temporary deposition, can not be adhered to one another well, but can evenly be broken up in a liquid, thus can successfully along with liquid enters heat exchanger tube and flow out, prevent the obstruction of heat exchanger tube, ensure carrying out smoothly of heat transfer process.

Described support comprise horizonal base plate, be connected with horizonal base plate two pieces support swash plate 22, be provided with between two pieces of support swash plates and shore leaf spring 23, described bobbin carriage is provided with stretches spacing rib 24 under some, every stretching for a pair time between spacing rib forms support slot, a corresponding support slot of support, two pieces in a support support swash plate top and stretch in the support slot corresponding with this support.Support is made also to have distortion adaptability, when outer cover of heat exchanger body is heated, when shell wall is elongated, the spacing of stretching spacing rib for a pair time also becomes large, and now under the effect of shoring leaf spring, supporting swash plate spacing can change, carry out adaptability adjustment, improve the stability supported, reduce the limiting by thermal stretching of outer cover of heat exchanger body shell wall, stress raisers when preventing the elongation caused because support is connected with outer cover of heat exchanger body.

Claims

1. a biliquid heat-exchanger rig, it is characterized in that, comprise tube side portion, shell side portion, some supports, described tube side portion comprises tube side inlet pipe, tube side goes out pipe, many heat exchanger tubes, described shell side portion comprises horizontal outer cover of heat exchanger body, shell side inlet pipe, shell side goes out pipe, described outer cover of heat exchanger body is by end socket, shell head, two ends are that the bobbin carriage of port is formed jointly, fixed tube sheet is provided with between described shell head and bobbin carriage, floating tube sheet is provided with between described end socket and bobbin carriage, described bobbin carriage one end passage port is provided with ladder flange edge, described end socket is provided with ladder flange edge, ladder flange edge on bobbin carriage turns over edge seal with the ladder on end socket and docks, and form neck tube at joint, neck tube bore is greater than bobbin carriage bore, described floating tube sheet is within neck tube, sealed to each other and be slidably connected between described floating tube sheet and neck tube, sliding contact surface is the inner tubal wall face of neck tube, described heat exchanger tube two ends are connected to fixed tube sheet, on floating tube sheet, described heat exchanger tube is in bobbin carriage, one end of heat exchanger tube is communicated to end socket inside, the other end of heat exchanger tube is communicated to shell head inside, described tube side inlet pipe, tube side goes out Guan Jun and is connected on shell head, described shell side inlet pipe, shell side goes out Guan Jun and is connected on bobbin carriage, shell head inside is divided into the tube side influent stream chamber be communicated with tube side inlet pipe by one piece of tube side cutoff board, go out with tube side the tube side that pipe is communicated with to go out to flow chamber, described shell side inlet pipe is in bobbin carriage top, the feed liquor direction of shell side inlet pipe is from top to bottom, gear liquid protection transverse slat is provided with in described bobbin carriage, the feed liquor direction of described shell side inlet pipe is towards gear liquid protection transverse slat, described gear liquid protection transverse slat is connected to shell side inlet pipe lower end by protection connecting plate, the inner tubal wall face of described neck tube is provided with oblique seal ring portion, described oblique seal ring portion is between floating tube sheet and end socket, described oblique seal ring portion has and tiltedly seals low side, oblique envelope is high-end, described oblique envelope is high-end turns over EDGE CONTACT with the ladder on end socket, described oblique envelope low side contacts with floating tube sheet.

2. a kind of biliquid heat-exchanger rig according to claim 1, it is characterized in that, be provided with some deflection plates in described bobbin carriage, described deflection plate is vertical with the length direction of bobbin carriage, described deflection plate one end is connected with bobbin carriage inwall, forms circulation interval between the other end and bobbin carriage.

3. a kind of biliquid heat-exchanger rig according to claim 1, it is characterized in that, described bobbin carriage is provided with expansion joint, described expansion joint wall thickness is less than bobbin carriage wall thickness, it is two half chests sections that bobbin carriage cuts off by described expansion joint, described expansion joint comprises two oblique ring flat-plates that close up, a covering ring flat-plate, two oblique ring flat-plates that close up are connected in two half chests sections, between the tank wall of two half chests sections, gap is expansion notch, the horizontal width of described expansion notch is less than two minimum level spacing closed up between oblique ring flat-plate, the oblique ring flat-plate of described closing in, covering ring flat-plate, half chests section is formed in one structure.

4. a kind of biliquid heat-exchanger rig according to claim 1, it is characterized in that, agitating vane is provided with in described tube side influent stream chamber, described agitating vane comprises some agitation blades, a rotating shaft be rotationally connected with shell head, described rotating shaft one end is stretched in the wall of end socket, the rotating shaft other end stretches in fixed tube sheet, and the feed liquor direction of described tube side inlet pipe is towards agitating vane.

5. a kind of biliquid heat-exchanger rig according to claim 1, it is characterized in that, described support comprise horizonal base plate, be connected with horizonal base plate two pieces support swash plate, be provided with between two pieces of support swash plates and shore leaf spring, described bobbin carriage is provided with stretches spacing rib under some, every stretching for a pair time between spacing rib forms support slot, and a corresponding support slot of support, two pieces in a support support swash plate top and stretch in the support slot corresponding with this support.