CN104764347B - A kind of heat exchanger - Google Patents
A kind of heat exchanger Download PDFInfo
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- CN104764347B CN104764347B CN201510080955.7A CN201510080955A CN104764347B CN 104764347 B CN104764347 B CN 104764347B CN 201510080955 A CN201510080955 A CN 201510080955A CN 104764347 B CN104764347 B CN 104764347B
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Abstract
The invention discloses a kind of heat exchanger, aim to provide and a kind ofly can effectively realize two kinds of heat exchanges between 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 comprises tube side portion, shell side portion, some supports, tube side portion comprises that tube side inlet pipe, tube side go out pipe, many heat exchanger tubes, shell side portion comprises 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, between shell head and bobbin carriage, be provided with fixed tube sheet, between end socket and bobbin carriage, be provided with end socket tube sheet, tube side cutoff board by shell head inside be divided into tube side influent stream chamber, tube side goes out to flow chamber, bobbin carriage is provided with expansion joint. The invention has the beneficial effects as follows: can, by the relatively yielding feature in expansion joint place, coordinate slidably end socket tube sheet, play structural temperature difference compensation effect, avoid the excessive and structural failure that causes of thermal (temperature difference) stress.
Description
Technical field
The invention belongs to chemical industry heat transfer technology field, relate in particular to a kind of heat exchanger.
Background technology
Heat exchanger is the process equipment that carries 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 is due to the diversity (corrosivity, temperature, pressure, medium, impurity, heat exchange amount etc.) of service condition, and also needing has rational structure and form.
Tubular heat exchanger (shell-and-tube heat exchanger) is one of current most widely used heat-transfer equipment, its mode that two kinds of liquid are carried out to heat exchange is: a kind of liquid flows through in housing, outside heat exchanger tube, another kind of liquid flows through in heat exchanger tube, inside and outside heat exchanger tube, carry out heat exchange, thereby realize its function.
Current tubular heat exchanger; although can realize preferably heat exchange function; but in actual applications; often have the situation that shell wall and the tube wall temperature difference are large factors such as (due to) two kinds of liquid temperature differentials are larger; cause housing obviously different from the elongation that is heated of heat exchanger tube; can between housing and heat exchanger tube, produce sizable thermal (temperature difference) stress and interstructural squeeze and destroy power, cause equipment to be badly damaged.
Summary of the invention
The present invention is in order to overcome deficiency of the prior art, provide a kind of and can effectively realize two kinds of heat exchanges between liquid, in the course of work, there is 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:
A kind of heat exchanger, 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 forms jointly, between described shell head and bobbin carriage, be provided with fixed tube sheet, between described end socket and bobbin carriage, be provided with end socket tube sheet, 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, a tube side cutoff board is divided into shell head inside in the tube side influent stream chamber being communicated with tube side inlet pipe, go out to manage with tube side the tube side being communicated with and 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 described expansion joint cuts off bobbin carriage, 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 that close up between oblique ring flat-plate, the oblique ring flat-plate of described closing in, covering ring flat-plate, the half chests section structure that is formed in one, in described bobbin carriage, be provided with shell side dividing plate, 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, between the shell side dividing plate other end and end socket tube sheet, form shell side and cross liquid mouth, spatial separation in bobbin carriage is become first shell side chamber by described shell side dividing plate, second shell side chamber, first described shell side chamber, between second shell side chamber, crossing liquid mouth by shell side is 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 for from top to bottom, in described bobbin carriage, be provided with gear liquid protection transverse slat, 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.
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, be provided with the stuffing-box pipe being 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 have oblique envelope low side, tiltedly seal high-end, described oblique envelope high-end with end socket on ladder turn over EDGE CONTACT, described oblique envelope low side contacts with end socket tube sheet.
As preferably, in described bobbin carriage, be provided with some deflection plates, described deflection plate is vertical with the length direction of bobbin carriage.
As preferably, in described tube side influent stream chamber, be provided with agitating vane, described agitating vane comprises 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 flange on bobbin carriage and shell head rides over respectively on two plate faces of fixed tube sheet, flange on bobbin carriage, fixed tube sheet, between flange on shell head, be bolted, also comprise some storages pocket of mixing, the assorted stomacher of described storage is drawn together pocket body, pocket pipe, described pocket pipe lateral wall is threaded with the assorted hole of the storage on tube side cutoff board, 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, described elasticity water collar, elasticity water inlet pipe, elasticity outlet pipe are provided with location steel cover outward, between described elasticity water collar and expansion joint, form water-cooled circuit, described elasticity water collar is adjacent to sealing near one end of bobbin carriage wall and the outer wall of two oblique ring flat-plates that close up, 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 receiving valve, feedback pipe, described feedback receiving 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 sliding valve core, the other end contact valve casing of regulating spring, described valve casing regulates connected entrance to turn on shell side inlet pipe by two, described sliding valve core regulates connected entrance to separate by two, described sliding valve core is provided with road in the spool that two adjusting connected entrances are communicated with, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, on valve casing, contact slide spool place is 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 a pair of head bulging protruding ring of seal ring plate outward, and the tail end of described bulging protruding ring is connected with elasticity water collar, described bulging protruding ring and the elasticity water collar structure that is formed in one.
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 are heated the difference of elongation when larger, can be by the relatively yielding feature in expansion joint place, coordinate the elongation of whole bobbin carriage to carry out implementation structure temperature difference compensation, avoid the excessive and structural failure that causes of thermal (temperature difference) stress; Also possess slidably end socket tube sheet simultaneously, can laterally slide along with the elongation of heat exchanger tube, also can play structural temperature difference compensation effect; There is again agitating vane structure, can avoid impurity to adhere to and 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, avoid the damage of poor, the yielding expansion joint of relative stiffness because caused by HTHP own; Water-cooled pipeline coordinates with expansion joint and forms reponse system, can feed back, automatically regulate feed liquor amount when pressing in shell side when excessive, realizes integrally-built dynamic protection.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation at agitating vane of the present invention place.
Fig. 3 is the structural representation at neck tube of the present invention place.
Fig. 4 is the structural representation at expansion joint of the present invention place.
Fig. 5 is the structural representation at outlet pipeline of the present invention place.
Fig. 6 is the structural representation that the present invention feeds back receiving valve place.
Fig. 7 is the structural representation at feedback port of the present invention place.
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, oblique ring flat-plate 16 closes up, 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 receiving 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 is crossed liquid mouth 44, first shell side chamber 45, second shell side chamber 46, gear liquid protection transverse slat 47, protection connecting plate 48.
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 heat exchanger, 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 forms jointly, between described shell head and bobbin carriage, be provided with fixed tube sheet 10, between described end socket and bobbin carriage, be provided with end socket tube sheet 11, 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, a tube side cutoff board 12 is divided into shell head inside in the tube side influent stream chamber 13 being communicated with tube side inlet pipe, go out to manage with tube side the tube side being 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 described expansion joint cuts off bobbin carriage, 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 that close up between oblique ring flat-plate, the oblique ring flat-plate of described closing in, covering ring flat-plate, the half chests section structure that is formed in one, in described bobbin carriage, be provided with shell side dividing plate 43, 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, between the shell side dividing plate other end and end socket tube sheet, form shell side and cross liquid mouth 44, spatial separation in bobbin carriage is become first shell side chamber 45 by described shell side dividing plate, second shell side chamber 46, first described shell side chamber, between second shell side chamber, crossing liquid mouth by shell side is 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 for from top to bottom, in described bobbin carriage, be provided with gear liquid protection transverse slat 47, 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.
When the present invention works, a kind of liquid enters from tube side inlet pipe, flows into end socket through the heat exchange nest of tubes that is communicated with tube side influent stream chamber, then goes out to manage outflow through going out to flow with tube side heat exchange nest of tubes, the tube side that chamber is communicated with; Another kind of liquid flows into from shell side inlet pipe, goes out pipe flow out behind the bobbin carriage inside of flowing through from shell side, and two kinds of liquid carry out heat exchange by the tube wall of heat exchanger tube, rational in infrastructure, heat transfer efficient. In the time that outer cover of heat exchanger body (being mainly bobbin carriage) is subject to thermal stretching, because its wall thickness is much larger than reasons such as heat exchanger tubes, the many times elongation of the obviously too late heat exchanger tube of its elongation, now due to the existence of expansion joint, can reduce bobbin carriage and extend difficulty, the auxiliary too small shortcoming of outer cover of heat exchanger body elongation that makes up, reduces thermal (temperature difference) stress between structure.
Heat exchanger of the prior art, there is a feature, be exactly that near bobbin carriage middle part (vial case axis place) does not arrange heat exchanger tube, a reason is divided two kinds because of heat exchanger tube: a kind of is to be directly communicated with tube side influent stream chamber, another kind is to be 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, can affect the heat transfer effect in reality, cause reduction of heat exchange efficiency, 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 wherein one type of heat exchanger tube number to become many, cause the problems referred to above, second reason is to have this necessary structure of tube side cutoff board, cause being arranged on bad being communicated in end socket in heat exchanger tube one end at middle part, 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 at bobbin carriage middle part, this space is called heat exchange blind area, middle part. liquid is entering after bobbin carriage, because heat exchanger tube place resistance is relatively large, liquid is difficult for resting on for a long time heat exchanger tube compact district relatively, but easily flow into the heat exchange blind area, middle part that resistance is less, cause " short circuit " phenomenon, make considerable liquid Main Current less participate in heat transfer process through heat exchange blind area, middle part, have a strong impact on heat exchange efficiency. and the existence of shell side dividing plate, heat exchange blind area is greatly reduced, reduce significantly the maximum spacing between heat exchanger tube, effectively alleviate liquid stream " short circuit " phenomenon, fully reduce ultimate range possible between liquid and heat exchanger tube, thereby the heat exchange degree of participation that effectively promotes liquid, has ensured heat exchange efficiency. and, making to form " double-shell side " in bobbin carriage by shell side dividing plate, in bobbin carriage, liquid flow, apart from multiplication, has significantly improved heat transfer effect.
In order to ensure heat exchange efficiency; in many cases inlet hydraulic, liquid feeding end flow velocity all can not be too little; liquid is from shell side inlet pipe enters in bobbin carriage; can directly impact inner heat exchanger tube; easily cause stressed excessive, the distortion of heat exchanger tube; gear liquid protection transverse slat has stopped the direct impact of shell side inlet pipe feed liquor; mating protection connecting plate flows to initial liquid feed liquor and changes into the approximate direction that is parallel to heat exchanger tube together; thereby exchange heat pipe and bobbin carriage inner structure have formed effective protecting against shock protection; improve job stability, extended heat exchanger tube service life.
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, in described neck tube, be provided with the stuffing-box pipe 19 being attached on neck tube inwall, 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, conventionally depending on environment for use. The main effect of stuffing-box pipe seals exactly, and cooperation and end socket tube sheet relative sliding. When the temperature difference of outer cover of heat exchanger body (being mainly bobbin carriage) and heat exchanger tube is large, the difference in elongation of being heated is when obvious, heat exchanger tube can shorten or extend by relative outer cover of heat exchanger body significantly, now, the heat exchanger tube of length variations can be with end socket tube sheet together transverse shifting, end socket tube sheet slides along neck tube axis direction in neck tube, provide structure poor compensation warm in nature, thereby eliminate heat exchanger tube length and relatively changed structure extruding large and that cause, greatly reduced 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 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 have oblique envelope low side, tiltedly seal high-end, described oblique envelope high-end with end socket on ladder turn over EDGE CONTACT, described oblique envelope low side contacts with end socket tube sheet. why traversing end socket tube sheet is, because heat exchanger tube is subject to thermal stretching to drive end socket tube sheet to move, and end socket place is owing to being heated, also can deformed dilation, when two kinds of liquid are especially flowed through the fluid temperature of tube side portion while not being very high, end socket swell increment is limited, now the sealing between tube sheet and neck tube still can ensure preferably, but when two kinds of liquid are especially flowed through the fluid temperature of tube side portion when 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 varies amount is larger, may cause sealing between end socket tube sheet and neck tube to become very poor not even sealing, 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 sealing, maintenance work process stabilization.
In described bobbin carriage, be provided with some deflection plates 21, described deflection plate is vertical with the length direction of bobbin carriage. At the liquid of bobbin carriage internal circulation, meeting is by the runner institute water conservancy diversion that deflection plate was divided into, thereby the longer circulation passage of formation relative length has in a disguised form reduced circulation bore, increased heat exchanger time, has promoted well heat exchange efficiency.
In described tube side influent stream chamber, be provided with agitating vane, described agitating vane comprises some agitation blades 22, a rotating shaft 23 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. In many cases, in liquid, all contain impurity, especially some small size impurity or cotton-shaped impurity, common filtration cannot separate, can not only spend expensive removing for the income of heat exchange, therefore it can will inevitably remain in liquid when heat exchange. 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, along with liquid flows into together heat exchanger tube and flows 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 flow velocity in tube side influent stream chamber slows down, and cotton-shaped impurity, small size impurity is interim deposition, adhered to one another easily, forms the larger impurity of volume, the larger impurity of volume in this time will block aperture very little heat exchanger tube relatively, causes heat exchange not smooth. And the existence of agitating vane, make liquid from tube side inlet pipe enters, first impact agitation blades, drive agitating vane rotates, and in rotation process, forms and stir stream in tube side influent stream chamber, cotton-shaped impurity, small size impurity cannot be deposited temporarily, can not be adhered to one another well, but can evenly be broken up in liquid, thereby can be successfully along with liquid enters heat exchanger tube and flows out, prevent the obstruction of heat exchanger tube, ensured 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 over respectively on two plate faces of fixed tube sheet, flange on bobbin carriage, fixed tube sheet, between flange on shell head, be bolted, also comprise some storages pocket of mixing, the assorted stomacher of described storage is drawn together pocket body 25, pocket pipe 26, described pocket pipe lateral wall is threaded with the assorted hole of the storage on tube side cutoff board, 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. between bobbin carriage, shell head, be connected and fixed by flange, bolt, therefore removing is also comparatively easily. the assorted pocket of storage is threaded with the assorted hole of storage, is also therefore easy-to-mount parts. in the time that small size impurity, cotton-shaped impurity etc. in tube side influent stream chamber deposit, attract, adhere to each other because of change in flow, the various factors such as adhesion that are heated, can form larger impurity, though the larger amount of impurities of these volumes is lacked, easily exchange heat pipe and result in blockage. agitating vane can rotate always, forms certain eddy flow and centrifugal stream in tube side influent stream chamber, and large impurity will often be shifted onto on the chamber wall away from agitating vane, then along with unordered the flowing again of sinuous flow in chamber. store assorted pocket and coordinate, after making the impurity of large volume in these be pushed open by agitating vane, enter into the assorted pocket of storage, once and enter, due to relative sinuous flow, turbulent little in the assorted pocket of storage, impurity is just difficult to leave the assorted pocket of storage again, thereby has ensured not have accumulating of middle large volume impurity in tube side influent stream chamber, avoids heat pipe to stop up. after work of the present invention completes, can unload easily the assorted pocket of storage 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, described elasticity water collar, elasticity water inlet pipe, elasticity outlet pipe is provided with location steel cover 30 outward, between described elasticity water collar and expansion joint, form water-cooled circuit 31, described elasticity water collar is adjacent to sealing near one end of bobbin carriage wall and the outer wall of two oblique ring flat-plates that close up, 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 passing through cooling water. Expansion joint is because himself is functional, 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 in the situations such as interior pressure is high, temperature is high lower times, although expansion joint has carried out temperature difference compensation, its easiest bulging, impaired feature also certainly exist. Cooling water is from being pumped up by cooling water, through inlet pipeline, elasticity water inlet pipe, elasticity water collar, elasticity outlet pipe, outlet pipeline, thereby whole expansion joint is carried out to effective outside water-cooled, thereby avoid to a certain extent expansion joint place temperature drift, appropriateness maintains its rigidity, prevents its distortion excessively. Thereby effective protection is carried out in position weak on whole channel structure.
Described shell side inlet pipe is provided with feedback regulation portion, described feedback regulation portion comprises feedback receiving valve 34, feedback pipe 35, described feedback receiving 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 sliding valve core, 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, described sliding valve core regulates connected entrance to separate by two, described sliding valve core is provided with road 40 in the spool that two adjusting connected entrances are communicated with, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, on valve casing, contact slide spool place is 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. in the time in shell side being high temperature, highly pressurised liquid state, especially in the time that the average feed liquor amount 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 outside bulging of the oblique ring flat-plate that closes up, covering ring flat-plate carries out adaptability adjusting and variation. and it is very large to work as expansion joint degrees of expansion, while approaching critical value, the outer wall of expansion joint and elasticity water inlet pipe 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, thereby in shell side, press and form feedback flow when excessive, 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, thereby play the effect of throttling, once throttling, in shell side, press immediately and reduce, now the bulging at expansion joint place can reduce naturally, reply certain form, whole cooling water pipeline like this including 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, can effectively protect overall structure.
Described elasticity water collar is provided with a pair of head bulging protruding ring 42 of seal ring plate outward, and the tail end of described bulging protruding ring is connected with elasticity water collar, described bulging protruding ring and the elasticity water collar structure that is formed in one. Bulging protruding ring can better with bulging after expansion joint fitted seal, thereby blocking-up 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 could realize cutout to approaching the limit, can prevent that expansion joint bulging is excessive, adjusting sensitivity is higher, sealing effectiveness is better, further reduces the impaired possibility of expansion joint.
Claims (8)
1. a heat exchanger, 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 forms jointly, between described shell head and bobbin carriage, be provided with fixed tube sheet, between described end socket and bobbin carriage, be provided with end socket tube sheet, 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, a tube side cutoff board is divided into shell head inside in the tube side influent stream chamber being communicated with tube side inlet pipe, go out to manage with tube side the tube side being communicated with and 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 described expansion joint cuts off bobbin carriage, 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 that close up between oblique ring flat-plate, the oblique ring flat-plate of described closing in, covering ring flat-plate, the half chests section structure that is formed in one, in described bobbin carriage, be provided with shell side dividing plate, 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, between the shell side dividing plate other end and end socket tube sheet, form shell side and cross liquid mouth, spatial separation in bobbin carriage is become first shell side chamber by described shell side dividing plate, second shell side chamber, first described shell side chamber, between second shell side chamber, crossing liquid mouth by shell side is 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 for from top to bottom, in described bobbin carriage, be provided with gear liquid protection transverse slat, 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, 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, in described neck tube, be provided with the stuffing-box pipe being attached on neck tube inwall, 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.
2. a kind of heat exchanger 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 have oblique envelope low side, tiltedly seal high-end, described oblique envelope high-end with end socket on ladder turn over EDGE CONTACT, described oblique envelope low side contacts with end socket tube sheet.
3. a kind of heat exchanger according to claim 1, is characterized in that, is provided with some deflection plates in described bobbin carriage, and described deflection plate is vertical with the length direction of bobbin carriage.
4. a kind of heat exchanger according to claim 1, it is characterized in that, in described tube side influent stream chamber, be provided with agitating vane, described agitating vane comprises 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.
5. a kind of heat exchanger 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 flange on bobbin carriage and shell head rides over respectively on two plate faces of fixed tube sheet, flange on bobbin carriage, fixed tube sheet, between flange on shell head, be bolted, also comprise some storages pocket of mixing, the assorted stomacher of described storage is drawn together pocket body, pocket pipe, described pocket pipe lateral wall is threaded with the assorted hole of the storage on tube side cutoff board, 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.
6. a kind of heat exchanger 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, elasticity outlet pipe is provided with location steel cover outward, between described elasticity water collar and expansion joint, form water-cooled circuit, described elasticity water collar is adjacent to sealing near one end of bobbin carriage wall and the outer wall of two oblique ring flat-plates that close up, 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.
7. a kind of heat exchanger according to claim 6, it is characterized in that, described shell side inlet pipe is provided with feedback regulation portion, described feedback regulation portion comprises feedback receiving valve, feedback pipe, described feedback receiving 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 sliding valve core, the other end contact valve casing of regulating spring, described valve casing regulates connected entrance to turn on shell side inlet pipe by two, described sliding valve core regulates connected entrance to separate by two, described sliding valve core is provided with road in the spool that two adjusting connected entrances are communicated with, described spool Nei Daonei bore is consistent with bore in shell side inlet pipe, on valve casing, contact slide spool place is provided with feedback port, described feedback port is communicated with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.
8. according to a kind of heat exchanger described in claim 6 or 7, it is characterized in that, described elasticity water collar is provided with a pair of head bulging protruding ring of seal ring plate outward, the tail end of described bulging protruding ring is connected with elasticity water collar, described bulging protruding ring and the elasticity water collar structure that is formed in one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080955.7A CN104764347B (en) | 2015-02-15 | 2015-02-15 | A kind of heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510080955.7A CN104764347B (en) | 2015-02-15 | 2015-02-15 | A kind of heat exchanger |
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| CN104764347A CN104764347A (en) | 2015-07-08 |
| CN104764347B true CN104764347B (en) | 2016-05-25 |
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| CN201510080955.7A Expired - Fee Related CN104764347B (en) | 2015-02-15 | 2015-02-15 | A kind of heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111404472B (en) * | 2020-03-24 | 2021-07-16 | 国家电投集团邢台新能源发电有限公司 | Solar photovoltaic board auxiliary device for preventing moist steam from damaging storage battery |
| CN112033187B (en) * | 2020-08-21 | 2022-02-11 | 上海一冷特艺压力容器有限公司 | High-efficiency heat exchanger |
| CN116412308B (en) * | 2023-06-09 | 2023-08-18 | 无锡市华立石化工程有限公司 | Pipeline preheating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US2063490A (en) * | 1934-12-04 | 1936-12-08 | Davis Engineering Corp | Method of making an expansion joint |
| CN201229131Y (en) * | 2008-04-11 | 2009-04-29 | 大连理工大学 | Shell and tube type acoustic cavitation sewerage heat exchanger |
| CN101349514B (en) * | 2008-09-05 | 2010-07-21 | 西安交通大学 | Internal and external fins intubatton type high temperature heat exchanger |
| CN101701779A (en) * | 2009-10-22 | 2010-05-05 | 锦州秀亭制管有限公司 | Multi-row pit heat exchange tube |
| CN101943527A (en) * | 2010-09-29 | 2011-01-12 | 中原工学院 | Multiple shell pass countercurrent-growth tube heat exchanger |
| CN103148734B (en) * | 2013-03-29 | 2016-04-20 | 茂名重力石化机械制造有限公司 | A kind of exchanger tubes and tubesheets syndeton of preventing shell side side clearance to corrode |
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