CN104697367A - Heat exchanging device for chemical industry - Google Patents

Heat exchanging device for chemical industry Download PDF

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Publication number
CN104697367A
CN104697367A CN201510080939.8A CN201510080939A CN104697367A CN 104697367 A CN104697367 A CN 104697367A CN 201510080939 A CN201510080939 A CN 201510080939A CN 104697367 A CN104697367 A CN 104697367A
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China
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tube
shell
shell side
bobbin carriage
pipe
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CN201510080939.8A
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CN104697367B (en
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刘钢海
杨其华
王铁苗
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China Jiliang University
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China Jiliang University
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Publication of CN104697367B publication Critical patent/CN104697367B/en
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Abstract

The invention discloses a heat exchanging device for chemical industry, and aims to provide a heat exchanging device which can effectively realize the heat exchange of two kinds of liquid, has the capability of compensating for temperature difference, and can prevent the damage of a shell due to the excessive differential temperature stress between the shell and a heat exchanging tube. The heat exchanging device comprises a tube pass part, a shell pass part and a plurality of supports, wherein the tube pass part comprises a tube-pass inlet tube, a tube-pass outlet tube and a plurality of heat exchanging tubes; the shell pass part comprises an outer shell of the heat exchanging device, a shell-pass inlet tube and a shell-pass outlet tube; the outer shell of the heat exchanging device consists of an end cap, a shell head and a tube box, a fixing tube plate is arranged between the shell head and the tube box, an end-cap tube plate is arranged between the end cap and the tube box, a tube-pass flow partition plate divides the inside of the shell head into a tube-pass flow inlet cavity and a tube-pass flow outlet cavity, and an expansion joint is arranged on the tube box. The heat exchanging device disclosed by the invention has the benefits that through the characteristic that the expansion joint is relatively easy to deform, the end-cap tube plate which can slide is matched, so that the heat exchanging device has a structural effect of compensating for temperature difference, and the structural damage due to the excessive differential temperature stress can be avoided.

Description

A kind of chemical industry heat-exchanger rig
Technical field
The invention belongs to chemical industry technical field of heat exchange, particularly relate to a kind of chemical industry 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.
Summary of the invention
The present invention 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, the heat-exchanger rig causing structural damage between housing and heat exchanger tube because thermal (temperature difference) stress is excessive can be prevented.
To achieve these goals, the present invention is by the following technical solutions:
A kind of chemical industry 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, end socket tube sheet is provided with between described end socket and bobbin carriage, described heat exchanger tube two ends are connected to fixed tube sheet, on end socket 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 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, shell side dividing plate is provided with in described bobbin carriage, the length direction of shell side dividing plate is parallel with the length direction of bobbin carriage, described shell side dividing plate one end is connected with fixed tube sheet, form shell side between the shell side dividing plate other end and end socket tube sheet and cross liquid mouth, space in bobbin carriage is separated into first shell side chamber by described shell side dividing plate, second shell side chamber, first described shell side chamber, cross liquid mouth by shell side between second shell side chamber to be communicated with, described shell side inlet pipe, shell side goes out Guan Jun and is connected on the outer wall of bobbin carriage away from end socket tube sheet one end, described shell side inlet pipe is directly communicated with first shell side chamber, described shell side goes out pipe and is directly communicated with second shell side 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, diversion division is provided with in described end socket, described diversion division comprises the water conservancy diversion plate body of level, described water conservancy diversion plate body is connected with end socket tube sheet, described water conservancy diversion plate body is provided with cylindricality flow guiding head away from one end of end socket tube sheet, described deflector side limit outer rim and end socket contact internal walls.
As preferably, 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 forming neck tube at joint, be provided with the stuffing-box pipe be attached on neck tube inwall in described neck tube, the bore of stuffing-box pipe is greater than bobbin carriage bore, described end socket tube sheet is in stuffing-box pipe, sealed to each other and be slidably connected between described end socket tube sheet and the inner tubal wall of stuffing-box pipe.
As preferably, the inner tubal wall of described stuffing-box pipe is provided with the oblique seal ring of filler, the oblique seal ring of described filler is between end socket tube sheet and end socket, the oblique seal ring of described filler has that tiltedly to seal low side, tiltedly envelope high-end, described oblique envelope is high-end turns over EDGE CONTACT with the ladder on end socket, and described oblique envelope low side contacts with end socket 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.
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 shell head, 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 bobbin carriage other end passage port is provided with flange, described shell head is provided with flange, flange on flange on bobbin carriage and shell head rides on two plate faces of fixed tube sheet respectively, flange on bobbin carriage, fixed tube sheet, be bolted between flange on shell head, also comprise some storages to mix pocket, pocket body drawn together by described storage stomacher of mixing, pocket pipe, described pocket pipe lateral wall and the storage on tube side cutoff board hole of mixing is threaded, the import of described pocket pipe is towards agitating vane, described pocket pipe is in tube side influent stream chamber, described pocket body is in tube side and goes out to flow in chamber.
As preferably, the described flexible water collar of expansion joint peripheral hardware, elasticity water inlet pipe, elasticity outlet pipe, location steel cover is provided with outside described elasticity water collar, elasticity water inlet pipe, elasticity outlet pipe, water-cooled circuit is formed between described elasticity water collar and expansion joint, close up near one end of bobbin carriage wall and two outer wall of oblique ring flat-plate of described elasticity water collar is adjacent to sealing, described elasticity water inlet pipe connects an inlet pipeline, described elasticity outlet pipe connects an outlet pipeline, and described inlet pipeline is communicated to cooling water pump.
As preferably, described shell side inlet pipe is provided with feedback regulation portion, described feedback regulation portion comprises feedback reception valve, feedback pipe, described feedback reception valve comprises valve casing, regulating spring, sliding valve core, one end of described sliding valve core connects one end of regulating spring, the other end contact valve casing of regulating spool, the other end contact valve casing of regulating spring, described valve casing regulates connected entrance to turn on shell side inlet pipe by two, two regulate connected entrance to separate by described sliding valve core, described sliding valve core be provided with by two regulate connected entrances be communicated with get up spool in road, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, valve casing contacts regulating spool place and be provided with feedback port, described feedback port is communicated with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.
As preferably, described elasticity water collar is provided with the bulging protruding ring of a pair head seal ring plate toward the outside, and the tail end of described bulging protruding ring is connected with elasticity water collar, and described bulging protruding ring and elasticity water collar are formed in one structure.
The invention has the beneficial effects as follows: 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 relatively yielding feature in expansion joint place, coordinate the elongation of whole bobbin carriage to realize structural temperature difference compensation, avoid thermal (temperature difference) stress excessive and the structural failure caused; Also possess slidably end socket tube sheet simultaneously, laterally can slide along with the elongation of heat exchanger tube, also can play structural temperature difference compensation effect; There is again agitating vane structure, impurities adhere can be avoided to gather, ensure that in heat exchanger tube, circulation is smooth and easy, and coordinate the assorted pocket of storage to realize the collection of large volume impurity, avoid the smoothness of liquid flow in large impurity effect shell head; There is the water-cooled pipeline for expansion joint, avoiding the damage of poor, the yielding expansion joint of relative stiffness because causing by HTHP own; Water-cooled pipeline coordinates with expansion joint and forms reponse system, can feed back, automatically regulating liquid inlet volume, realizing integrally-built dynamic protection when pressing through large in shell side.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation at agitating vane place of the present invention.
Fig. 3 is the structural representation at neck tube place of the present invention.
Fig. 4 is the structural representation at expansion joint place of the present invention.
Fig. 5 is the structural representation at outlet pipeline place of the present invention.
Fig. 6 is the structural representation at feedback reception valve place of the present invention.
Fig. 7 is the structural representation at feedback port place of the present invention.
Fig. 8 is the structural representation that the present invention keeps off 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, end socket tube sheet 11, tube side cutoff board 12, tube side influent stream chamber 13, tube side goes out to flow chamber 14, expansion joint 15, close up oblique ring flat-plate 16, covering ring flat-plate 17, ladder flange edge 18, stuffing-box pipe 19, the oblique seal ring 20 of filler, deflection plate 21, agitation blades 22, rotating shaft 23, flange 24, pocket body 25, pocket pipe 26, elasticity water collar 27, elasticity water inlet pipe 28, elasticity outlet pipe 29, location steel bushing 30, water-cooled circuit 31, inlet pipeline 32, outlet pipeline 33, feedback reception valve 34, feedback pipe 35, valve casing 36, regulating spring 37, sliding valve core 38, regulate connected entrance 39, road 40 in spool, feedback port 41, bulging protruding ring 42, shell side dividing plate 43, shell side crosses liquid mouth 44, first shell side chamber 45, second shell side chamber 46, gear liquid protection transverse slat 47, protection connecting plate 48, water conservancy diversion plate body 49, cylindricality flow guiding head 50.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, in embodiment shown in Fig. 8, a kind of chemical industry 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, end socket tube sheet 11 is provided with between described end socket and bobbin carriage, described heat exchanger tube two ends are connected to fixed tube sheet, on end socket 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 13 be communicated with tube side inlet pipe by one piece of tube side cutoff board 12, go out with tube side the tube side that pipe is communicated with and go out to flow chamber 14, described bobbin carriage is provided with expansion joint 15, 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 16 that close up, a covering ring flat-plate 17, 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, shell side dividing plate 43 is provided with in described bobbin carriage, the length direction of shell side dividing plate is parallel with the length direction of bobbin carriage, described shell side dividing plate one end is connected with fixed tube sheet, form shell side between the shell side dividing plate other end and end socket tube sheet and cross liquid mouth 44, space in bobbin carriage is separated into first shell side chamber 45 by described shell side dividing plate, second shell side chamber 46, first described shell side chamber, cross liquid mouth by shell side between second shell side chamber to be communicated with, described shell side inlet pipe, shell side goes out Guan Jun and is connected on the outer wall of bobbin carriage away from end socket tube sheet one end, described shell side inlet pipe is directly communicated with first shell side chamber, described shell side goes out pipe and is directly communicated with second shell side 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 47 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 48, diversion division is provided with in described end socket, described diversion division comprises the water conservancy diversion plate body 49 of level, described water conservancy diversion plate body is connected with end socket tube sheet, described water conservancy diversion plate body is provided with cylindricality flow guiding head 50 away from one end of end socket tube sheet, described deflector side limit outer rim and end socket contact internal walls.
When the present invention works, a kind of liquid enters from tube side inlet pipe, flows into end socket through the heat exchange pipe group that is communicated with tube side influent stream chamber, 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.When outer cover of heat exchanger body (being mainly bobbin carriage) is by thermal stretching, because its wall thickness is much larger than reasons such as heat exchanger tubes, many times its elongation is obviously not as good as the elongation of heat exchanger tube, now due to the existence of 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.
Chemical industry heat-exchanger rig of the prior art, there is a feature, be exactly in the middle part of bobbin carriage (near vial case axis place) heat exchanger tube is not set, a reason divides two kinds because of heat exchanger tube: a kind of is directly be communicated with tube side influent stream chamber, another kind is directly communicated with tube side to go out to flow chamber, the total number of these two kinds of heat exchanger tubes is generally identical, otherwise turnover fluid pressure is obviously uneven, velocity variations is large, the heat transfer effect in reality can be affected, heat exchange efficiency is caused to reduce, so, the words of heat exchanger tube are set at middle part, no matter it directly connects tube side influent stream chamber or tube side goes out to flow chamber, capital causes a wherein type heat exchanger tube number to become many, cause the problems referred to above, second reason has this necessary structure of tube side cutoff board, cause being arranged on that the heat exchanger tube one end at middle part is bad is communicated in end socket, need to produce separately bending heat exchanger tube and be arranged on this place, application cost obviously increases in practice, so generally also do not adopt.Therefore, will form a larger space in the middle part of bobbin carriage, this space is called heat exchange blind area, middle part.Liquid is after entering bobbin carriage, because heat exchanger tube place resistance is relatively large, liquid not easily rests on heat exchanger tube compact district relatively for a long time, but easily flow into the less heat exchange blind area, middle part of resistance, cause " short circuit " phenomenon, make considerable liquid mainly flow through heat exchange blind area, middle part and less participate in heat transfer process, have a strong impact on heat exchange efficiency.And the existence of shell side dividing plate, heat exchange blind area is greatly reduced, reduce the maximum spacing between heat exchanger tube significantly, effective alleviation liquid stream " short circuit " phenomenon, ultimate range possible between abundant minimizing liquid and heat exchanger tube, thus effectively promote the heat exchange degree of participation of liquid, ensure that heat exchange efficiency.Further, make to form " double-shell side " in bobbin carriage by shell side dividing plate, in bobbin carriage, the multiplication of liquid flow distance, significantly improves heat transfer effect.
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.
Water conservancy diversion plate body and cylindricality flow guiding head play the effect of water conservancy diversion in end socket, the heat exchanger tube that water conservancy diversion plate body will be communicated with tube side influent stream chamber, go out to flow with tube side this two classes heat exchanger tube of heat exchanger tube that chamber is communicated with greatly to reduce at the connection bore of end socket inside, thus the liquid flowing through tube side portion can only first by above water conservancy diversion plate body, and then enter below water conservancy diversion plate body, the glide path of U-shaped like is formed in end socket, and coordinate the passage between cylindricality flow guiding head and end socket fully to guide liquid, prevent sinuous flow in end socket, turbulent flow is too much excessive, improve liquid flow stability, be beneficial to liquid to flow out smoothly.
Described bobbin carriage one end passage port is provided with ladder flange edge 18, 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, the stuffing-box pipe 19 be attached on neck tube inwall is provided with in described neck tube, the bore of stuffing-box pipe is greater than bobbin carriage bore, and described end socket tube sheet is in stuffing-box pipe, sealed to each other and be slidably connected between described end socket tube sheet and the inner tubal wall of stuffing-box pipe.Stuffing-box is hermetically-sealed construction conventional in mechanical engineering, and it can be made up of multiple materials such as epoxy resin daubs, usually depending on environment for use.The main effect of stuffing-box pipe seals exactly, and coordinates and end socket tube sheet relative sliding.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 end socket tube sheet together transverse shifting, end socket tube sheet slides along neck tube axis direction in neck tube, provide structural temperature difference compensation, 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.
The inner tubal wall of described stuffing-box pipe is provided with the oblique seal ring 20 of filler, the oblique seal ring of described filler is between end socket tube sheet and end socket, the oblique seal ring of described filler has that tiltedly to seal low side, tiltedly envelope high-end, described oblique envelope is high-end turns over EDGE CONTACT with the ladder on end socket, and described oblique envelope low side contacts with end socket tube sheet.Why traversing end socket tube sheet is, drive end socket 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, end socket 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 end socket tube sheet and neck tube may be caused to become very poor even do not seal, now due to the existence of the oblique seal ring of filler, can effectively ensure being adjacent between end socket tube sheet lateral margin and neck tube inwall, laminating, abundant guarantee sealing, maintenance work process stabilization.
Be provided with some deflection plates 21 in described bobbin carriage, described deflection plate is vertical with the length direction of 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.
Agitating vane is provided with in described tube side influent stream chamber, described agitating vane comprises 22, the rotating shaft 23 be rotationally connected with shell head of some agitation blades, described rotating shaft one end is stretched in the wall of shell head, 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, liquid is flows decrease in tube side influent stream chamber, cotton-shaped impurity, the easy temporary deposition of small size impurity, adhered to one another, forms 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 bobbin carriage other end passage port is provided with flange 24, described shell head is provided with flange, flange on flange on bobbin carriage and shell head rides on two plate faces of fixed tube sheet respectively, flange on bobbin carriage, fixed tube sheet, be bolted between flange on shell head, also comprise some storages to mix pocket, pocket body 25 drawn together by described storage stomacher of mixing, pocket pipe 26, described pocket pipe lateral wall and the storage on tube side cutoff board hole of mixing is threaded, the import of described pocket pipe is towards agitating vane, described pocket pipe is in tube side influent stream chamber, described pocket body is in tube side and goes out to flow in chamber.Be connected and fixed by flange, bolt between bobbin carriage, shell head, therefore removing also is conveniently.The assorted pocket of storage is threaded with the assorted hole of storage, is therefore also easy-to-mount parts.When the small size impurity, cotton-shaped impurity etc. in tube side influent stream chamber because of change in flow, the various factors such as adhesion that are heated deposit, attract, adhere to each other time, can form larger impurity, though the larger amount of impurities of these volumes is few, easily exchange heat pipe results in blockage.Agitating vane can rotate always, forms certain eddy flow and centrifugal stream in tube side influent stream chamber, and large impurity will by the chamber wall often shifted onto away from agitating vane, then along with the unordered flowing again of sinuous flow in chamber.And coordinate the assorted pocket of storage, the impurity of large volume in these then can be made to be pushed open by agitating vane after, enter into the assorted pocket of storage, and once enter, owing to storing relative sinuous flow in assorted pocket, turbulent flow is little, impurity is just difficult to leave the assorted pocket of storage again, thus ensure that in tube side influent stream chamber and do not have accumulating of middle large volume impurity, avoids heat pipe to block.After work of the present invention completes, then can unload the assorted pocket of storage easily and carry out impurity cleaning.
The flexible water collar 27 of described expansion joint peripheral hardware, elasticity water inlet pipe 28, elasticity outlet pipe 29, location steel cover 30 is provided with outside described elasticity water collar, elasticity water inlet pipe, elasticity outlet pipe, water-cooled circuit 31 is formed between described elasticity water collar and expansion joint, close up near one end of bobbin carriage wall and two outer wall of oblique ring flat-plate of described elasticity water collar is adjacent to sealing, described elasticity water inlet pipe connects an inlet pipeline 32, described elasticity outlet pipe connects an outlet pipeline 33, and described inlet pipeline is communicated to cooling water pump.Elasticity water collar, elasticity water inlet pipe, elasticity outlet pipe are for by cooling water.Expansion joint is functional due to himself, and wall thickness is less than bobbin carriage wall thickness, more yielding, therefore its rigidity, intensity etc. are obviously the most weak on whole channel structure, therefore when shell side is under the situations such as interior pressure is high, temperature is high, although expansion joint has carried out temperature difference compensation, its easiest bulging, impaired feature have also certainly existed.Cooling water pumps up from by cooling water, through inlet pipeline, elasticity water inlet pipe, elasticity water collar, elasticity outlet pipe, outlet pipeline, thus effective outside water-cooled is carried out to whole expansion joint, thus avoid expansion joint place temperature drift to a certain extent, appropriateness maintains its rigidity, prevents its distortion excessively.Thus available protecting has been carried out to position more weak on whole channel structure.
Described shell side inlet pipe is provided with feedback regulation portion, described feedback regulation portion comprises feedback reception valve 34, feedback pipe 35, described feedback reception valve comprises valve casing 36, regulating spring 37, sliding valve core 38, one end of described sliding valve core connects one end of regulating spring, the other end contact valve casing of regulating spool, the other end contact valve casing of regulating spring, described valve casing regulates connected entrance 39 to turn on shell side inlet pipe by two, two regulate connected entrance to separate by described sliding valve core, described sliding valve core be provided with by two regulate connected entrances be communicated with get up spool in road 40, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, valve casing contacts regulating spool place and be provided with feedback port 41, described feedback port is communicated with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.When in shell side being high temperature, highly pressurised liquid state, especially when the average liquid inlet volume at shell side inlet pipe place is larger, whole outer cover of heat exchanger body especially bobbin carriage can be subject to very large pressure, now the most responsive structure is no more than expansion joint, it is by two relative separation of oblique ring flat-plates of closing up, and the oblique ring flat-plate that closes up, covering ring flat-plate outside bulging to carry out adaptability adjustment and change.And when expansion joint degrees of expansion is very large, during close to critical value, outer wall and the elasticity water inlet pipe of expansion joint are adjacent to, now whole water-cooled is cut off, cooling water can not lead to outlet pipeline, then flow to feedback pipe, feedback port, thus form feedback flow when pressing through large in shell side, this burst of feedback flow supercharging gradually, promote sliding valve core compression adjustment spring, make the actual influent stream bore reduction of shell side inlet pipe, thus serve the effect of throttling, once throttling, then in shell side, pressure reduces immediately, now the bulging at expansion joint place can reduce naturally, reply certain form, like this then the whole cooling water pipeline comprising water-cooled circuit becomes path again, the actual influent stream bore of shell side inlet pipe is also corresponding becomes large again.This process is dynamic; it triggers starting point is the expansion joint the most responsive on whole channel structure, rigidity is the most weak, and instantaneity is high, reaction is fast, and by reponse system in reaction (distortion) cooperation of expansion joint; automatically realize throttling adjustment, effectively can protect overall structure.
Described elasticity water collar is provided with the bulging protruding ring 42 of a pair head seal ring plate toward the outside, and the tail end of described bulging protruding ring is connected with elasticity water collar, and described bulging protruding ring and elasticity water collar are formed in one structure.Bulging protruding ring can better with bulging after expansion joint fitted seal, thus block water-cooled circuit, and sealing station is the contact position of bulging protruding ring and covering ring flat-plate, no longer need whole expansion-head bulging to could realize cutout close to the limit, expansion joint bulging can be prevented excessive, adjustment sensitivity is higher, sealing effectiveness better, reduces the impaired possibility of expansion joint further.

Claims (9)

1. a chemical industry 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, end socket tube sheet is provided with between described end socket and bobbin carriage, described heat exchanger tube two ends are connected to fixed tube sheet, on end socket 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 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, shell side dividing plate is provided with in described bobbin carriage, the length direction of shell side dividing plate is parallel with the length direction of bobbin carriage, described shell side dividing plate one end is connected with fixed tube sheet, form shell side between the shell side dividing plate other end and end socket tube sheet and cross liquid mouth, space in bobbin carriage is separated into first shell side chamber by described shell side dividing plate, second shell side chamber, first described shell side chamber, cross liquid mouth by shell side between second shell side chamber to be communicated with, described shell side inlet pipe, shell side goes out Guan Jun and is connected on the outer wall of bobbin carriage away from end socket tube sheet one end, described shell side inlet pipe is directly communicated with first shell side chamber, described shell side goes out pipe and is directly communicated with second shell side 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, diversion division is provided with in described end socket, described diversion division comprises the water conservancy diversion plate body of level, described water conservancy diversion plate body is connected with end socket tube sheet, described water conservancy diversion plate body is provided with cylindricality flow guiding head away from one end of end socket tube sheet, described deflector side limit outer rim and end socket contact internal walls.
2. a kind of chemical industry heat-exchanger rig according to claim 1, it is characterized in that, 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, the stuffing-box pipe be attached on neck tube inwall is provided with in described neck tube, the bore of stuffing-box pipe is greater than bobbin carriage bore, described end socket tube sheet is in stuffing-box pipe, sealed to each other and be slidably connected between described end socket tube sheet and the inner tubal wall of stuffing-box pipe.
3. a kind of chemical industry heat-exchanger rig according to claim 2, it is characterized in that, the inner tubal wall of described stuffing-box pipe is provided with the oblique seal ring of filler, the oblique seal ring of described filler is between end socket tube sheet and end socket, the oblique seal ring of described filler has that tiltedly to seal low side, tiltedly envelope high-end, described oblique envelope is high-end turns over EDGE CONTACT with the ladder on end socket, and described oblique envelope low side contacts with end socket tube sheet.
4. a kind of chemical industry heat-exchanger rig according to claim 1, 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.
5. a kind of chemical industry 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 shell head, 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.
6. a kind of chemical industry heat-exchanger rig according to claim 5, it is characterized in that, described bobbin carriage other end passage port is provided with flange, described shell head is provided with flange, flange on flange on bobbin carriage and shell head rides on two plate faces of fixed tube sheet respectively, flange on bobbin carriage, fixed tube sheet, be bolted between flange on shell head, also comprise some storages to mix pocket, pocket body drawn together by described storage stomacher of mixing, pocket pipe, described pocket pipe lateral wall and the storage on tube side cutoff board hole of mixing is threaded, the import of described pocket pipe is towards agitating vane, described pocket pipe is in tube side influent stream chamber, described pocket body is in tube side and goes out to flow in chamber.
7. a kind of chemical industry heat-exchanger rig according to claim 1, it is characterized in that, the described flexible water collar of expansion joint peripheral hardware, elasticity water inlet pipe, elasticity outlet pipe, described elasticity water collar, elasticity water inlet pipe, location steel cover is provided with outside elasticity outlet pipe, water-cooled circuit is formed between described elasticity water collar and expansion joint, close up near one end of bobbin carriage wall and two outer wall of oblique ring flat-plate of described elasticity water collar is adjacent to sealing, described elasticity water inlet pipe connects an inlet pipeline, described elasticity outlet pipe connects an outlet pipeline, described inlet pipeline is communicated to cooling water pump.
8. a kind of chemical industry heat-exchanger rig according to claim 7, it is characterized in that, described shell side inlet pipe is provided with feedback regulation portion, described feedback regulation portion comprises feedback reception valve, feedback pipe, described feedback reception valve comprises valve casing, regulating spring, sliding valve core, one end of described sliding valve core connects one end of regulating spring, the other end contact valve casing of regulating spool, the other end contact valve casing of regulating spring, described valve casing regulates connected entrance to turn on shell side inlet pipe by two, two regulate connected entrance to separate by described sliding valve core, described sliding valve core be provided with by two regulate connected entrances be communicated with get up spool in road, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, valve casing contacts regulating spool place and be provided with feedback port, described feedback port is communicated with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.
9. a kind of chemical industry heat-exchanger rig according to claim 7 or 8, it is characterized in that, described elasticity water collar is provided with the bulging protruding ring of a pair head seal ring plate toward the outside, the tail end of described bulging protruding ring is connected with elasticity water collar, and described bulging protruding ring and elasticity water collar are formed in one structure.
CN201510080939.8A 2015-02-15 2015-02-15 A kind of chemical industry heat-exchanger rig Expired - Fee Related CN104697367B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109950821A (en) * 2019-03-27 2019-06-28 朱金芝 A kind of cool-down dehumidification electric power cabinet based on semiconductor chilling plate
CN113683136A (en) * 2021-09-02 2021-11-23 上海泓济环保科技股份有限公司 Heat exchange solidification separation switchable regeneration organic wastewater separation device and use method thereof

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CN201229131Y (en) * 2008-04-11 2009-04-29 大连理工大学 Shell and tube type acoustic cavitation sewerage heat exchanger
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CN101101189B (en) * 2006-07-04 2011-09-07 顾安生 High-temperature heat-exchanging device
CN202032923U (en) * 2011-04-06 2011-11-09 北京化工大学 Tube-shell type heat exchanger of large-small hole baffle plate with gap
CN202350593U (en) * 2011-08-24 2012-07-25 苏州富瑞铜业有限公司 Shell-and-tube heat exchanger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063490A (en) * 1934-12-04 1936-12-08 Davis Engineering Corp Method of making an expansion joint
JPH08285489A (en) * 1995-04-19 1996-11-01 Kawasaki Heavy Ind Ltd Heat exchanging method and heat exchanger
CN101101189B (en) * 2006-07-04 2011-09-07 顾安生 High-temperature heat-exchanging device
CN201229131Y (en) * 2008-04-11 2009-04-29 大连理工大学 Shell and tube type acoustic cavitation sewerage heat exchanger
CN101943527A (en) * 2010-09-29 2011-01-12 中原工学院 Multiple shell pass countercurrent-growth tube heat exchanger
CN202032923U (en) * 2011-04-06 2011-11-09 北京化工大学 Tube-shell type heat exchanger of large-small hole baffle plate with gap
CN202350593U (en) * 2011-08-24 2012-07-25 苏州富瑞铜业有限公司 Shell-and-tube heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109950821A (en) * 2019-03-27 2019-06-28 朱金芝 A kind of cool-down dehumidification electric power cabinet based on semiconductor chilling plate
CN113683136A (en) * 2021-09-02 2021-11-23 上海泓济环保科技股份有限公司 Heat exchange solidification separation switchable regeneration organic wastewater separation device and use method thereof

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