CN104613793B - A kind of shell-and-tube heat exchanger - Google Patents
A kind of shell-and-tube heat exchanger Download PDFInfo
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- CN104613793B CN104613793B CN201510082084.2A CN201510082084A CN104613793B CN 104613793 B CN104613793 B CN 104613793B CN 201510082084 A CN201510082084 A CN 201510082084A CN 104613793 B CN104613793 B CN 104613793B
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Abstract
The invention discloses a kind of shell-and-tube heat exchanger, it is desirable to provide a kind of heat exchange being effectively realized between two kinds of liquid, there is temperature difference compensation ability, can prevent from causing because thermal (temperature difference) stress is excessive between housing and heat exchanger tube impaired heat exchanger.It includes tube side portion, shell side portion, some supports, tube side portion includes that tube side inlet pipe, tube side go out pipe, many heat exchanger tubes, shell side portion includes that outer cover of heat exchanger body, shell side inlet pipe, shell side go out pipe, outer cover of heat exchanger body is made up of end socket, shell head, bobbin carriage, it is provided with fixed tube sheet between shell head and bobbin carriage, being provided with end socket tube sheet between end socket and bobbin carriage, one piece of tube side cutoff board will be divided into tube side influent stream chamber, tube side outflow lumen inside shell head, bobbin carriage is provided with expansion joint.The invention has the beneficial effects as follows: slidably end socket tube sheet can be coordinated by the most yielding feature at expansion joint, play structural temperature difference compensation effect, it is to avoid thermal (temperature difference) stress is excessive and the structural failure that causes.
Description
Technical field
The invention belongs to chemical industry technical field of heat exchange, particularly relate to a kind of shell-and-tube heat exchanger.
Background technology
Heat exchanger is by the process equipment of heat transmission, and it is widely used in oil refining, petrochemical industry and the industry of other vague generalization.Such as cool down, condense, heat, evaporate and Waste Heat Recovery etc..Heat exchanger is owing to using the multiformity (corrosivity, temperature, pressure, medium, impurity, heat exchange amount etc.) of condition, it is also desirable to have 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, carries out heat exchange, thus realize its function inside and outside heat exchanger tube.
Current tubular heat exchanger; although heat exchange function can preferably be realized; but in actual applications; often have the shell wall situation big with tube wall temperature difference factors such as (caused by) two kinds of liquid temperature differentials are bigger; cause the significantly different by thermal expansion length of housing and heat exchanger tube; sizable thermal (temperature difference) stress and interstructural extruding destructive 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 being effectively realized between two kinds of liquid, work process has structural temperature difference compensation ability, can prevent from causing because thermal (temperature difference) stress is excessive between housing and heat exchanger tube the heat exchanger of structural damage.
To achieve these goals, the present invention is by the following technical solutions:
nullA kind of shell-and-tube heat exchanger，Including tube side portion、Shell side portion、Some supports，Described tube side portion includes tube side inlet pipe、Tube side goes out pipe、Many heat exchanger tubes，Described shell side portion includes 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 collectively forms，It is provided with fixed tube sheet between described shell head and bobbin carriage，End socket tube sheet it 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 inside end socket，The other end of heat exchanger tube is communicated to inside shell head，Described tube side inlet pipe、Tube side goes out pipe and is both connected on shell head，Described shell side inlet pipe、Shell side goes out pipe and is both connected on bobbin carriage，One piece of tube side cutoff board will be divided into the tube side influent stream chamber connected with tube side inlet pipe inside shell head、The tube side outflow lumen that pipe connects is gone out with tube side，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 is cut off by described expansion joint，Described expansion joint includes two oblique ring flat-plates that close up、One 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 for expanding notch，The described horizontal width expanding notch is less than the minimum level spacing between two oblique ring flat-plates of closing in，The oblique ring flat-plate of described closing in、Covering ring flat-plate、Half chests section is formed in one structure，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 it 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，It is provided with diversion division in described end socket，Described diversion division includes 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 limit, deflector side 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 form neck tube at joint, and it being provided with the stuffing-box pipe being attached on neck tube inwall in described neck tube, the bore of stuffing-box pipe is more 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, high-end and on end socket the ladder of described tiltedly envelope turns over EDGE CONTACT, and described tiltedly envelope low side contacts with end socket tube sheet.
As preferably, being provided with some deflection plates in described bobbin carriage, described deflection plate is vertical with the length direction of bobbin carriage.
As preferably, described tube side influent stream intracavity is provided with agitating vane, described agitating vane includes some agitation blades, a rotating shaft being 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 bobbin carriage rides on two plate faces of fixed tube sheet with the flange on shell head respectively, flange on bobbin carriage, fixed tube sheet, it is bolted between flange on shell head, if also including the miscellaneous pocket that desiccates, the miscellaneous stomacher of described storage includes pocket body, pocket pipe, threaded in described hole miscellaneous with the storage on tube side cutoff board, pocket pipe lateral wall, the import of described pocket pipe is towards agitating vane, described pocket pipe is in tube side influent stream intracavity, described pocket body is in tube side outflow lumen.
As preferably, described expansion joint is externally provided with elastic water collar, elastic water inlet pipe, elastic outlet pipe, described elastic water collar, elastic water inlet pipe, elastic outlet pipe are externally provided with location steel bushing, water-cooled circuit is formed between described elastic water collar and expansion joint, the described elastic water collar outer wall near one end of bobbin carriage wall with two oblique ring flat-plates that close up is adjacent to seal, described elastic water inlet pipe connects an inlet pipeline, described elastic 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 includes feedback reception valve, feedback pipe, described feedback reception valve includes valve casing, regulation spring, sliding valve core, one end of described sliding valve core connects one end of regulation spring, the other end contact valve casing of sliding valve core, the other end contact valve casing of regulation spring, described valve casing turns on shell side inlet pipe by two regulation connected entrances, two regulation connected entrances are separated by described sliding valve core, described sliding valve core is provided with road in the spool two regulation connected entrance connections got up, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, it is provided with feedback port at contact slide spool on valve casing, described feedback port connects with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.
Described elastic water collar is provided with a pair head bulging protruding ring towards covering ring flat-plate, and the tail end of described bulging protruding ring is connected with elastic water collar, and described bulging protruding ring and elasticity water collar are formed in one structure.
The invention has the beneficial effects as follows: can effectively carry out the heat exchange of two kinds of liquid, when heat exchanger shell and heat exchanger tube by the difference of thermal expansion length bigger time, can be by the most yielding feature at expansion joint, coordinate the elongation of whole bobbin carriage to realize structural temperature difference compensation, it is to avoid thermal (temperature difference) stress is excessive and the structural failure that causes；It is also equipped with slidably end socket tube sheet simultaneously, can slide laterally along with the elongation of heat exchanger tube, also can play structural temperature difference compensation effect；There is again agitating vane structure, be avoided that impurity adheres to gather, it is ensured that in heat exchanger tube, circulation is smooth and easy, and coordinate the miscellaneous pocket of storage to realize the collection of large volume impurity, it is to avoid the smoothness of liquid flowing in big impurity effect shell head；There is the water-cooled pipeline for expansion joint, it is to avoid relative stiffness expansion joint poor, yielding own is because of the damage caused by High Temperature High Pressure；Water-cooled pipeline and expansion joint cooperatively form feedback system, when shell side intrinsic pressure excessive time can feed back, be automatically adjusted liquid inlet volume, it is achieved to integrally-built dynamic protection.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation at agitating vane of the present invention；
Fig. 3 is the structural representation at neck tube of the present invention；
Fig. 4 is the structural representation at expansion joint of the present invention；
Fig. 5 is the structural representation at outlet pipeline of the present invention；
Fig. 6 is the structural representation at feedback reception valve of the present invention；
Fig. 7 is the structural representation at feedback port of the present invention；
Fig. 8 is the structural representation that the present invention keeps off at liquid protection transverse slat.
nullIn 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 outflow lumen 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 of filler 20、Deflection plate 21、Agitation blades 22、Rotating shaft 23、Flange 24、Pocket body 25、Pocket pipe 26、Elastic water collar 27、Elastic water inlet pipe 28、Elastic 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、Regulation spring 37、Sliding valve core 38、Regulation connected entrance 39、Road 40 in spool、Feedback port 41、Bulging protruding ring 42、Gear liquid protection transverse slat 43、Protection connecting plate 44、Water conservancy diversion plate body 45、Cylindricality flow guiding head 46.
Detailed description of the invention
The present invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
nullSuch as Fig. 1、Fig. 2、Fig. 3、Fig. 4、Fig. 5、Fig. 6、Fig. 7、In embodiment shown in Fig. 8，A kind of shell-and-tube heat exchanger，Including tube side portion、Shell side portion、Some supports 1，Described tube side portion includes tube side inlet pipe 2、Tube side goes out pipe 3、Many heat exchanger tubes 4，Described shell side portion includes 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 collectively forms，It is provided with fixed tube sheet 10 between described shell head and bobbin carriage，End socket tube sheet 11 it 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 inside end socket，The other end of heat exchanger tube is communicated to inside shell head，Described tube side inlet pipe、Tube side goes out pipe and is both connected on shell head，Described shell side inlet pipe、Shell side goes out pipe and is both connected on bobbin carriage，One piece of tube side cutoff board 12 will be divided into the tube side influent stream chamber 13 connected with tube side inlet pipe inside shell head、The tube side outflow lumen 14 that pipe connects is gone out with tube side，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 is cut off by described expansion joint，Described expansion joint includes two oblique ring flat-plates 16 that close up、One 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 for expanding notch，The described horizontal width expanding notch is less than the minimum level spacing between two oblique ring flat-plates of closing in，The oblique ring flat-plate of described closing in、Covering ring flat-plate、Half chests section is formed in one structure，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 43 it 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 44，It is provided with diversion division in described end socket，Described diversion division includes the water conservancy diversion plate body 45 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 46 away from one end of end socket tube sheet，Described limit, deflector side outer rim and end socket contact internal walls.
When the present invention works, a kind of liquid enters from tube side inlet pipe, and the heat exchange pipe group through connecting with tube side influent stream chamber flows into end socket, then heat exchange pipe group, the tube side through connecting with tube side outflow lumen goes out pipe flow and go out；Another kind of liquid flows into from shell side inlet pipe, goes out pipe flow from shell side and go out after flowing through bobbin carriage inside, and 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 (predominantly bobbin carriage) is by thermal stretching, owing to 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 elongation difficulty can be reduced, auxiliary makes up the shortcoming that outer cover of heat exchanger body elongation is too small, reduces thermal (temperature difference) stress between structure.
In order to ensure heat exchange efficiency; inlet hydraulic, liquid feeding end flow velocity all can not be the least in many cases; liquid is after shell side inlet pipe enters in bobbin carriage; can directly impact the heat exchanger tube of inside; easily cause heat exchanger tube stress excessive, deformation; gear liquid protection transverse slat blocks the direct impact of shell side inlet pipe feed liquor; initial for liquid feed liquor is flowed to change 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 defines 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 connect with tube side influent stream chamber, this two classes heat exchanger tube of the heat exchanger tube connected with tube side outflow lumen reduces significantly at the connection bore within end socket, thus the liquid flowing through tube side portion can only first pass through above water conservancy diversion plate body, then enter back into 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 excessive too much, improve liquid flow stability, it is beneficial to liquid 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 being attached on neck tube inwall it is provided with in described neck tube, the bore of stuffing-box pipe is more 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 sealing structure conventional in mechanical engineering, and it can be made up of multiple materials such as epoxy resin daubs, generally depending on using environment.The main effect of stuffing-box pipe seals exactly, and coordinates slide relative with end socket tube sheet.When outer cover of heat exchanger body (predominantly bobbin carriage) and the temperature difference of heat exchanger tube are big, difference in elongation of being heated is obvious, heat exchanger tube can shorten or extend by relative outer cover of heat exchanger body significantly, now, the heat exchanger tube of length change can move laterally together with end socket tube sheet, 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 structure extruding that is big and that cause, greatly reduce thermal (temperature difference) stress, ensured integrally-built stablize firm.
The inner tubal wall of described stuffing-box pipe is provided with the oblique seal ring of filler 20, 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, high-end and on end socket the ladder of described tiltedly envelope turns over EDGE CONTACT, and described tiltedly envelope low side contacts with end socket tube sheet.End socket tube sheet is the most traversing, be because heat exchanger tube be heated elongation drive end socket tube sheet move, and owing to being heated at end socket, also can deformed dilation, when two kinds of liquid especially flow through the temperature of liquid in tube side portion be not the highest time, end socket swell increment is limited, now the sealing between tube sheet and neck tube remains to preferably ensure, but when the temperature of liquid 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 bigger, neck tube internal diameter variable quantity is bigger, 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, fully ensure that sealing, maintenance work process stabilization.
Being 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, the runner institute water conservancy diversion being divided into by deflection plate, thus form the circulation passage that relative length is longer, in a disguised form reduce circulation bore, increase heat exchanger time, improve heat exchange efficiency well.
Described tube side influent stream intracavity is provided with agitating vane, described agitating vane includes 22, the rotating shaft 23 being 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, especially some small size impurity or cotton-shaped impurity in liquid, common filtration cannot separate, it is impossible to spends high cost to be removed only for the income of heat exchange, and therefore during heat exchange, it can will necessarily retain in a liquid.A kind of liquid from tube side inlet pipe enter tube side influent stream chamber, in theory for, if small size impurity, cotton-shaped impurity can be evenly distributed in liquid, just can flow into heat exchanger tube along with liquid together and flow out smoothly, not result in partial occlusion.But actually, due to various factors, impurity is not necessarily evenly distributed in liquid, especially the bore in tube side influent stream chamber is obviously more than tube side inlet pipe, liquid is at tube side influent stream intracavity flows decrease, cotton-shaped impurity, the easy temporary deposition of small size impurity, adhered to one another, forms the impurity that volume is bigger, this time, the bigger impurity of volume will block the heat exchanger tube that aperture is comparatively small, causes heat exchange the most smooth.And the existence of agitating vane, liquid is made first to impact agitation blades after tube side inlet pipe enters, drive agitating vane rotates, and in rotation process, forms agitation stream at tube side influent stream intracavity, make cotton-shaped impurity, the small size impurity cannot temporary deposition, can not be the most adhered to one another, but can uniformly be broken up in a liquid such that it is able to successfully along with liquid enters heat exchanger tube and flows out, prevent the obstruction of heat exchanger tube, ensure being smoothed out 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 bobbin carriage rides on two plate faces of fixed tube sheet with the flange on shell head respectively, flange on bobbin carriage, fixed tube sheet, it is bolted between flange on shell head, if also including the miscellaneous pocket that desiccates, the miscellaneous stomacher of described storage includes pocket body 25, pocket pipe 26, threaded in described hole miscellaneous with the storage on tube side cutoff board, pocket pipe lateral wall, the import of described pocket pipe is towards agitating vane, described pocket pipe is in tube side influent stream intracavity, described pocket body is in tube side outflow lumen.Connecting fixing by flange, bolt between bobbin carriage, shell head, therefore removing also is conveniently.Store miscellaneous pocket and threaded with storing miscellaneous hole, be the most also easy for the parts of dismounting.When the small size impurity of tube side influent stream intracavity, cotton-shaped impurity etc. because of change in flow, the various factors such as adhesion that are heated deposit, attract, adhere to each other time, bigger impurity can be formed, though the bigger amount of impurities of these volumes is few, but easily exchange heat pipe results in blockage.Agitating vane can rotate always, forms certain eddy flow and centrifugal stream at tube side influent stream intracavity, and big impurity will be shifted onto away from the cavity wall of agitating vane from time to time, then as the most unordered flowing of intracavity sinuous flow.And coordinate the miscellaneous pocket of storage, the impurity of large volume in these then can be made to be stirred after impeller pushes open, enter in the miscellaneous pocket of storage, and once enter, little owing to storing in miscellaneous pocket sinuous flow, turbulent flow relatively, impurity is difficult to further out storing miscellaneous pocket, thus ensure that tube side influent stream intracavity does not have accumulating of middle large volume impurity, it is to avoid heat pipe blocks.After the present invention has worked, then can unload the miscellaneous pocket of storage easily and carry out impurity cleaning.
Described expansion joint is externally provided with elastic water collar 27, elastic water inlet pipe 28, elastic outlet pipe 29, described elastic water collar, elastic water inlet pipe, elastic outlet pipe are externally provided with location steel bushing 30, water-cooled circuit 31 is formed between described elastic water collar and expansion joint, the described elastic water collar outer wall near one end of bobbin carriage wall with two oblique ring flat-plates that close up is adjacent to seal, described elastic water inlet pipe connects an inlet pipeline 32, described elastic outlet pipe connects an outlet pipeline 33, and described inlet pipeline is communicated to cooling water pump.Elastic water collar, elastic water inlet pipe, elastic outlet pipe are for leading to supercooled water.Expansion joint is functional due to himself, and wall thickness is less than bobbin carriage wall thickness, it is more yielding, therefore its rigidity, intensity etc. is clearly the most weak on whole channel structure, therefore when shell side is under the situation such as intrinsic pressure height, temperature height, although expansion joint has carried out temperature difference compensation, but its easiest bulging, impaired feature also certainly exist.Cooling water pumps up from by cooling water, through inlet pipeline, elastic water inlet pipe, elastic water collar, elastic outlet pipe, outlet pipeline, thus whole expansion joint is carried out effective outside water-cooled, thus avoid temperature drift at expansion joint to a certain extent, appropriateness maintains its rigidity, prevents its deformation excessively.Thus position more weak on whole channel structure has been carried out effective protection.
nullDescribed shell side inlet pipe is provided with feedback regulation portion，Described feedback regulation portion includes feedback reception valve 34、Feedback pipe 35，Described feedback reception valve includes valve casing 36、Regulation spring 37、Sliding valve core 38，One end of described sliding valve core connects one end of regulation spring，The other end contact valve casing of sliding valve core，The other end contact valve casing of regulation spring，Described valve casing is turned on shell side inlet pipe by two regulation connected entrances 39，Two regulation connected entrances are separated by described sliding valve core，Described sliding valve core is provided with road 40 in the spool two regulation connected entrance connections got up，Described spool Nei Daonei bore is consistent with bore in shell side inlet pipe，Feedback port 41 it is provided with at contact slide spool on valve casing，Described feedback port connects 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, when especially average liquid inlet volume at shell side inlet pipe is bigger, whole outer cover of heat exchanger body especially bobbin carriage can be subjected to large compressive, the most most sensitive structure is no more than expansion joint, it is by the relative separation of two oblique ring flat-plates that close up, and the outside bulging of the oblique ring flat-plate that closes up, covering ring flat-plate is to carry out adapt and change.And when expansion joint degrees of expansion is the biggest, during close to marginal value, the outer wall of expansion joint is adjacent to elastic water inlet pipe, the most whole water-cooled is cut off, cooling water can not lead to outlet pipeline, then flow to feedback pipe, feedback port, thus shell side intrinsic pressure excessive time formed feedback flow, this burst of feedback flow gradually supercharging, promote sliding valve core compression adjustment spring, the actual influent stream bore making shell side inlet pipe reduces, thus serve the effect of throttling, once throttle, then shell side is intrinsic pressure reduces immediately, now the bulging at expansion joint can reduce naturally, reply certain form, such then including water-cooled circuit whole cooling water pipeline becomes path again, the actual influent stream bore of shell side inlet pipe is also corresponding becomes big again.This process is dynamic; it triggers starting point is expansion joint most sensitive on whole channel structure, that rigidity is the most weak, and instantaneity is high, reaction is fast, and by feedback system in reaction (deformation) cooperation of expansion joint; it is automatically obtained throttling to adjust, overall structure can be effectively protected.
Described elastic water collar is provided with a pair head bulging protruding ring 42 towards covering ring flat-plate, and the tail end of described bulging protruding ring is connected with elastic water collar, and described bulging protruding ring and elasticity water collar are formed in one structure.Bulging protruding ring energy expansion joint fitted seal preferably and after bulging, thus block water-cooled circuit, and the contact position that sealing station is bulging protruding ring and covering ring flat-plate, it is no longer necessary to whole expansion-head bulging and could realize cutout to close to the limit, expansion joint bulging can be prevented excessive, regulation sensitivity is higher, sealing effectiveness more preferable, reduces the probability that expansion joint is impaired further.
Claims (8)
- null1. a shell-and-tube heat exchanger，It is characterized in that，Including tube side portion、Shell side portion、Some supports，Described tube side portion includes tube side inlet pipe、Tube side goes out pipe、Many heat exchanger tubes，Described shell side portion includes 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 collectively forms，It is provided with fixed tube sheet between described shell head and bobbin carriage，End socket tube sheet it 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 inside end socket，The other end of heat exchanger tube is communicated to inside shell head，Described tube side inlet pipe、Tube side goes out pipe and is both connected on shell head，Described shell side inlet pipe、Shell side goes out pipe and is both connected on bobbin carriage，One piece of tube side cutoff board will be divided into the tube side influent stream chamber connected with tube side inlet pipe inside shell head、The tube side outflow lumen that pipe connects is gone out with tube side，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 is cut off by described expansion joint，Described expansion joint includes two oblique ring flat-plates that close up、One 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 for expanding notch，The described horizontal width expanding notch is less than the minimum level spacing between two oblique ring flat-plates of closing in，The oblique ring flat-plate of described closing in、Covering ring flat-plate、Half chests section is formed in one structure，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 it 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，It is provided with diversion division in described end socket，Described diversion division includes 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 limit, deflector side outer rim and end socket contact internal walls，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 being attached on neck tube inwall it is provided with in described neck tube，The bore of stuffing-box pipe is more than bobbin carriage bore，Described end socket tube sheet is in stuffing-box pipe，Between described end socket tube sheet and the inner tubal wall of stuffing-box pipe sealed to each other and be slidably connected.
- A kind of shell-and-tube heat exchanger the most according to claim 1, 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, high-end and on end socket the ladder of described tiltedly envelope turns over EDGE CONTACT, and described tiltedly envelope low side contacts with end socket tube sheet.
- A kind of shell-and-tube heat exchanger the most according to claim 1, is characterized in that, being provided with some deflection plates in described bobbin carriage, described deflection plate is vertical with the length direction of bobbin carriage.
- A kind of shell-and-tube heat exchanger the most according to claim 1, it is characterized in that, described tube side influent stream intracavity is provided with agitating vane, described agitating vane includes some agitation blades, a rotating shaft being 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.
- A kind of shell-and-tube heat exchanger the most according to claim 4, 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 bobbin carriage rides on two plate faces of fixed tube sheet with the flange on shell head respectively, flange on bobbin carriage, fixed tube sheet, it is bolted between flange on shell head, if also including the miscellaneous pocket that desiccates, the miscellaneous stomacher of described storage includes pocket body, pocket pipe, threaded in described hole miscellaneous with the storage on tube side cutoff board, pocket pipe lateral wall, the import of described pocket pipe is towards agitating vane, described pocket pipe is in tube side influent stream intracavity, described pocket body is in tube side outflow lumen.
- A kind of shell-and-tube heat exchanger the most according to claim 1, it is characterized in that, described expansion joint is externally provided with elastic water collar, elastic water inlet pipe, elastic outlet pipe, described elastic water collar, elastic water inlet pipe, elastic outlet pipe is externally provided with location steel bushing, water-cooled circuit is formed between described elastic water collar and expansion joint, the described elastic water collar outer wall near one end of bobbin carriage wall with two oblique ring flat-plates that close up is adjacent to seal, described elastic water inlet pipe connects an inlet pipeline, described elastic outlet pipe connects an outlet pipeline, described inlet pipeline is communicated to cooling water pump.
- nullA kind of shell-and-tube heat exchanger the most according to claim 6，It is characterized in that，Described shell side inlet pipe is provided with feedback regulation portion，Described feedback regulation portion includes feedback reception valve、Feedback pipe，Described feedback reception valve includes valve casing、Regulation spring、Sliding valve core，One end of described sliding valve core connects one end of regulation spring，The other end contact valve casing of sliding valve core，The other end contact valve casing of regulation spring，Described valve casing is turned on shell side inlet pipe by two regulation connected entrances，Two regulation connected entrances are separated by described sliding valve core，Described sliding valve core is provided with road in the spool two regulation connected entrance connections got up，Described spool Nei Daonei bore is consistent with bore in shell side inlet pipe，It is provided with feedback port at contact slide spool on valve casing，Described feedback port connects with feedback pipe one end，The feedback pipe other end is communicated to inlet pipeline.
- 8. according to a kind of shell-and-tube heat exchanger described in claim 6 or 7, it is characterized in that, described elastic water collar is provided with a pair head bulging protruding ring towards covering ring flat-plate, the tail end of described bulging protruding ring is connected with elastic water collar, and described bulging protruding ring and elasticity water collar are formed in one structure.
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| CN201510082084.2A CN104613793B (en) | 2015-02-15 | 2015-02-15 | A kind of shell-and-tube heat exchanger |
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| CN201510082084.2A CN104613793B (en) | 2015-02-15 | 2015-02-15 | A kind of shell-and-tube heat exchanger |
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| CN104613793B true CN104613793B (en) | 2016-08-24 |
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Citations (5)
| 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 |
| US4858681A (en) * | 1983-03-28 | 1989-08-22 | Tui Industries | Shell and tube heat exchanger |
| CN101943527A (en) * | 2010-09-29 | 2011-01-12 | 中原工学院 | Multiple shell pass countercurrent-growth tube heat exchanger |
| DE102010015091A1 (en) * | 2010-04-15 | 2011-10-20 | Linde Aktiengesellschaft | Arrangement for protecting compensator i.e. multilayer compensator, used in compensating temperature stress during interconnection of e.g. pipe line of heat exchanger, has protection element covering compensator against external influence |
| CN202485495U (en) * | 2012-02-28 | 2012-10-10 | 华北电力大学 | Shell-and-tube type heat exchanger of baffle of ADS (accelerator driven system) reactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089100A1 (en) * | 2008-01-02 | 2009-07-16 | Johnson Controls Technology Company | Heat exchanger |
-
2015
- 2015-02-15 CN CN201510082084.2A patent/CN104613793B/en active Active
Patent Citations (5)
| 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 |
| US4858681A (en) * | 1983-03-28 | 1989-08-22 | Tui Industries | Shell and tube heat exchanger |
| DE102010015091A1 (en) * | 2010-04-15 | 2011-10-20 | Linde Aktiengesellschaft | Arrangement for protecting compensator i.e. multilayer compensator, used in compensating temperature stress during interconnection of e.g. pipe line of heat exchanger, has protection element covering compensator against external influence |
| CN101943527A (en) * | 2010-09-29 | 2011-01-12 | 中原工学院 | Multiple shell pass countercurrent-growth tube heat exchanger |
| CN202485495U (en) * | 2012-02-28 | 2012-10-10 | 华北电力大学 | Shell-and-tube type heat exchanger of baffle of ADS (accelerator driven system) reactor |
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| CN104613793A (en) | 2015-05-13 |
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