CN104634141B - A kind of tubular heat exchanger - Google Patents
A kind of tubular heat exchanger Download PDFInfo
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- CN104634141B CN104634141B CN201510079900.4A CN201510079900A CN104634141B CN 104634141 B CN104634141 B CN 104634141B CN 201510079900 A CN201510079900 A CN 201510079900A CN 104634141 B CN104634141 B CN 104634141B
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Abstract
The invention discloses a kind of tubular 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 tube side inlet pipe, tube side goes out pipe, many heat exchanger tubes, shell side portion include 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: the relatively yielding feature in expansion joint place can be passed through, coordinate slidably end socket tube sheet, 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 tubular 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 cooling, condensation, heating, evaporation 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, heat exchange is carried out, thus realizing its function inside and outside heat exchanger tube.
Current tubular heat exchanger; although heat exchange function can be realized preferably; but in actual applications; often have the big situation of shell wall and tube wall temperature difference factors such as (caused) 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 that equipment is 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:
A kind of tubular 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, the bobbin carriage that two ends are 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 minimum level spacing that the described horizontal width expanding notch closes up between oblique ring flat-plate less than two, the oblique ring flat-plate of described closing in, covering ring flat-plate, half chests section is formed in one structure, shell side dividing plate it is provided with in described bobbin carriage, the length direction of shell side dividing plate is parallel with the length direction of bobbin carriage, described shell side dividing plate one end is connected with fixed tube sheet, form shell side between the shell side dividing plate other end and end socket tube sheet and cross liquid mouth, spatial separation in bobbin carriage is become upper half shell side chamber by described shell side dividing plate, lower half shell side chamber, described upper half shell side chamber, the connection of liquid mouth is crossed by shell side between lower half shell side chamber, described shell side inlet pipe, shell side goes out pipe and is both connected on the bobbin carriage outer wall away from end socket tube sheet one end, described shell side inlet pipe directly connects upper half shell side chamber, described shell side goes out pipe directly connection lower half shell side chamber, multiple elastic heat exchanger it is provided with in described bobbin carriage, described elastic heat exchanger includes copper ball, heat exchange connects spring, heat exchange connects both ends of the spring and each connects a heat exchanger tube, described copper ball is connected to heat exchange and connects the stage casing of spring.
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, described high-end and on end socket the ladder that tiltedly seals 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, also include the assorted pocket of some storages, pocket body drawn together by the assorted stomacher of described storage, pocket pipe, threaded with the assorted hole of the storage on tube side cutoff board in described 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 sealing, 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, regulate spring, sliding valve core, one end of described sliding valve core connects the one end regulating spring, the other end contact valve casing of sliding valve core, regulate the other end contact valve casing of spring, described valve casing regulates connected entrance by two and turns on shell side inlet pipe, described sliding valve core regulates connected entrance by two and separates, described sliding valve core is provided with and regulates road in the spool that connected entrance connection is got up by two, 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 connects with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.
As preferably, 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 the difference that heat exchanger shell and heat exchanger tube are subject to thermal expansion length is bigger, the relatively yielding feature in expansion joint place can be passed through, 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 and gather, it is ensured 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, 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 the damage because being caused of the relative stiffness expansion joint poor, yielding own 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 place of the present invention.
Fig. 3 is the structural representation at neck tube place of the present invention.
Fig. 4 is the structural representation at expansion joint place of the present invention.
Fig. 5 is the structural representation at outlet pipeline place of the present invention.
Fig. 6 is the structural representation at feedback reception valve place of the present invention.
Fig. 7 is the structural representation at feedback port place of the present invention.
Fig. 8 is the partial enlarged drawing of bobbin carriage inner structure of the present invention.
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 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 20 of filler, 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, regulate spring 37, sliding valve core 38, regulate connected entrance 39, road 40 in spool, feedback port 41, bulging protruding ring 42, shell side dividing plate 43, shell side crosses liquid mouth 44, upper half shell side chamber 45, lower half shell side chamber 46, copper ball 47, heat exchange connects spring 48.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, in embodiment shown in Fig. 8, a kind of tubular 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, and described outer cover of heat exchanger body is by end socket 7, shell head 8, the bobbin carriage 9 that two ends are port collectively forms, and is provided with fixed tube sheet 10 between described shell head and bobbin carriage, is provided with end socket tube sheet 11 between described end socket and bobbin carriage, and 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, and one end of heat exchanger tube is communicated to inside end socket, and 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, and 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, go out the tube side outflow lumen 14 that pipe connects with tube side, described bobbin carriage is provided with expansion joint 15, and described expansion joint wall thickness is less than bobbin carriage wall thickness, and it is two half chests sections that bobbin carriage is cut off by described expansion joint, and 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 minimum level spacing that the described horizontal width expanding notch closes up between oblique ring flat-plate less than two, the oblique ring flat-plate of described closing in, covering ring flat-plate, half chests section is formed in one structure, shell side dividing plate 43 it is provided with in described bobbin carriage, the length direction of shell side dividing plate is parallel with the length direction of bobbin carriage, described shell side dividing plate one end is connected with fixed tube sheet, forming shell side between the shell side dividing plate other end and end socket tube sheet and cross liquid mouth 44, spatial separation in bobbin carriage is become upper half shell side chamber 45 by described shell side dividing plate, lower half shell side chamber 46, described upper half shell side chamber, the connection of liquid mouth, described shell side inlet pipe is crossed by shell side between lower half shell side chamber, shell side goes out pipe and is both connected on the bobbin carriage outer wall away from end socket tube sheet one end, described shell side inlet pipe directly connects upper half shell side chamber, described shell side goes out pipe directly connection lower half shell side chamber, is provided with multiple elastic heat exchanger in described bobbin carriage, and described elastic heat exchanger includes copper ball 47, heat exchange connects spring 48, and heat exchange connects both ends of the spring and each connects a heat exchanger tube, and described copper ball is connected to heat exchange and connects the stage casing of spring.
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, goes out pipe flow go out then through the heat exchange pipe group connected with tube side outflow lumen, tube side; 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 (being mainly 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.
Tubular heat exchanger of the prior art, there is a feature, it is exactly be not provided with heat exchanger tube (near vial case axis place) in the middle part of bobbin carriage, one reason is because heat exchanger tube and divides two kinds: a kind of is directly connect tube side influent stream chamber, another kind is directly to connect tube side outflow lumen, the total number of both heat exchanger tubes is generally identical, otherwise turnover fluid pressure is substantially uneven, velocity variations is big, the heat transfer effect in reality can be affected, cause that heat exchange efficiency reduces, so, the words of heat exchanger tube are set at middle part, no matter it is directly connected to tube side influent stream chamber or tube side outflow lumen, capital causes that one of which type heat exchanger tube number becomes many, cause the problems referred to above, second reason is to have this necessary structure of tube side cutoff board, cause that the heat exchanger tube one end being arranged on middle part is bad and be communicated in end socket, needing the heat exchanger tube individually producing bending to be arranged on this place, application cost substantially increases in practice, so generally also not adopting. therefore, will forming a bigger space in the middle part of bobbin carriage, this space is called heat exchange blind area, middle part. liquid is after entering bobbin carriage, owing to heat exchanger tube place resistance is relatively large, liquid phase is to not easily resting on heat exchanger tube compact district for a long time, but easily flow into the heat exchange blind area, middle part that resistance is less, cause " short circuit " phenomenon, make considerable liquid flow primarily through heat exchange blind area, middle part and less participate in heat transfer process, have a strong impact on heat exchange efficiency. and the existence of shell side dividing plate, heat exchange blind area is greatly reduced, reduce the maximum spacing between heat exchanger tube significantly, effectively alleviate liquid stream " short circuit " phenomenon, the ultimate range that to be substantially reduced between liquid and heat exchanger tube possible, thus effectively promoting the heat exchange degree of participation of liquid, it is ensured that heat exchange efficiency. further, making formation " double-shell side " in bobbin carriage by shell side dividing plate, in bobbin carriage, the multiplication of liquid flow distance, significantly improves heat transfer effect.
Heat exchange in elastic heat exchanger connects spring and is coupled together by the heat exchanger tube that two different, improves the structural strength of the contact between heat exchanger tube and entirety. Heat exchange connect spring can and heat exchanger tube, bobbin carriage in heat conduction mutually between liquid, increase heat-conducting area. Copper ball is connected to heat exchange and connects on spring, after being subject to the drive of working fluid, impact, irregular reciprocating motion can be formed, thus forming multiple local sinuous flow in bobbin carriage, effectively increase the time of staying and the glide path of localized liquid in bobbin carriage, and connect spring by heat exchange, copper ball increases heat exchange area locally, on the whole the heat exchange efficiency in shell side portion has been carried out effective lifting.
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 and end socket tube sheet relative sliding. When outer cover of heat exchanger body (being mainly 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 eliminating heat exchanger tube length 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 20 of filler, the oblique seal ring of described filler is between end socket tube sheet and end socket, the oblique seal ring of described filler has that tiltedly to seal low side, tiltedly envelope high-end, described high-end and on end socket the ladder that tiltedly seals turns over EDGE CONTACT, and described tiltedly envelope low side contacts with end socket tube sheet. why traversing end socket tube sheet is, be because heat exchanger tube be heated elongation drive end socket tube sheet move, and end socket place is owing to being heated, also can deformed dilation, when the temperature of liquid that two kinds of liquid especially flow through tube side portion is not as high, end socket swell increment is limited, now the sealing between tube sheet and neck tube remains to ensure preferably, 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, may result in sealing between end socket tube sheet and neck tube to become very poor and 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 forming the circulation passage that relative length is longer, in a disguised form reducing circulation bore, increasing heat exchanger time, improving 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, it is all containing impurity in liquid, especially some small size impurity or cotton-shaped impurity, common filtration cannot separate, high cost can not being spent to be removed only for the income of heat exchange, therefore during heat exchange, it can will necessarily retain in a liquid. A kind of liquid enters tube side influent stream chamber from tube side inlet pipe, in theory, if small size impurity, cotton-shaped impurity can be evenly distributed in liquid, just can flow into heat exchanger tube 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 that heat exchange is not smooth. And the existence of agitating vane, liquid is made first to impact agitation blades after entering from tube side inlet pipe, drive agitating vane rotates, and in rotation process, is formed at tube side influent stream intracavity and stirs stream, make cotton-shaped impurity, the small size impurity cannot temporary deposition, can not be adhered to one another well, 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, also include the assorted pocket of some storages, pocket body 25 drawn together by the assorted stomacher of described storage, pocket pipe 26, threaded with the assorted hole of the storage on tube side cutoff board in described 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 assorted pocket and threaded with storing assorted hole, be therefore 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 often be shifted onto away from the cavity wall of agitating vane, then as the unordered flowing again of intracavity sinuous flow. And coordinate the assorted pocket of storage, the impurity of large volume in these then can be made to be stirred after impeller pushes open, enter in the assorted pocket of storage, and once enter, due to store relative sinuous flow in assorted pocket, turbulent flow little, impurity is difficult to further out storing assorted 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 assorted 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 sealing, 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. are clearly on whole channel structure the most weak, 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 being carried out effective outside water-cooled, thus avoiding expansion joint place temperature drift to a certain extent, appropriateness maintains its rigidity, it is prevented that its deformation is excessively. Thus position more weak on whole channel structure has been carried out effective protection.
Described 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, regulate spring 37, sliding valve core 38, one end of described sliding valve core connects the one end regulating spring, the other end contact valve casing of sliding valve core, regulate the other end contact valve casing of spring, described valve casing regulates connected entrance 39 by two and turns on shell side inlet pipe, described sliding valve core regulates connected entrance by two and separates, described sliding valve core is provided with and regulates road 40 in the spool that connected entrance connection is got up by two, 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 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, especially when the average liquid inlet volume at shell side inlet pipe place is bigger, whole outer cover of heat exchanger body especially bobbin carriage can be subjected to large compressive, now 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 very big, during close to marginal value, the outer wall of expansion joint is adjacent to elastic water inlet pipe, now 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 supercharging gradually, promote sliding valve core compression adjustment spring, the actual influent stream bore making shell side inlet pipe reduces, thus serving the effect of throttling, once throttling, then shell side is intrinsic pressure reduces immediately, now the bulging at expansion joint place can reduce naturally, reply certain form, such then include the whole cooling water pipeline of water-cooled circuit and again become path, the actual influent stream bore of shell side inlet pipe is also corresponding becomes big again. this process is dynamic, its triggering starting point is the expansion joint most sensitive on whole channel structure, 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 better and after bulging, thus blocking 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, adjustment sensitivity is higher, sealing effectiveness better, reduces the probability that expansion joint is impaired further.
Claims (9)
1. a tubular 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, the bobbin carriage that two ends are 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 minimum level spacing that the described horizontal width expanding notch closes up between oblique ring flat-plate less than two, the oblique ring flat-plate of described closing in, covering ring flat-plate, half chests section is formed in one structure, shell side dividing plate it is provided with in described bobbin carriage, the length direction of shell side dividing plate is parallel with the length direction of bobbin carriage, described shell side dividing plate one end is connected with fixed tube sheet, form shell side between the shell side dividing plate other end and end socket tube sheet and cross liquid mouth, spatial separation in bobbin carriage is become upper half shell side chamber by described shell side dividing plate, lower half shell side chamber, described upper half shell side chamber, the connection of liquid mouth is crossed by shell side between lower half shell side chamber, described shell side inlet pipe, shell side goes out pipe and is both connected on the bobbin carriage outer wall away from end socket tube sheet one end, described shell side inlet pipe directly connects upper half shell side chamber, described shell side goes out pipe directly connection lower half shell side chamber, multiple elastic heat exchanger it is provided with in described bobbin carriage, described elastic heat exchanger includes copper ball, heat exchange connects spring, heat exchange connects both ends of the spring and each connects a heat exchanger tube, described copper ball is connected to heat exchange and connects the stage casing of spring.
2. a kind of tubular heat exchanger according to claim 1, it is characterized in that, described bobbin carriage one end passage port is provided with ladder flange edge, described end socket is provided with ladder flange edge, ladder flange edge on bobbin carriage turns over edge seal with the ladder on end socket and docks, and form neck tube at joint, the stuffing-box pipe 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, sealed to each other and be slidably connected between described end socket tube sheet and the inner tubal wall of stuffing-box pipe.
3. a kind of tubular heat exchanger according to claim 2, it is characterized in that, the inner tubal wall of described stuffing-box pipe is provided with the oblique seal ring of filler, the oblique seal ring of described filler is between end socket tube sheet and end socket, the oblique seal ring of described filler has that tiltedly to seal low side, tiltedly envelope high-end, described high-end and on end socket the ladder that tiltedly seals turns over EDGE CONTACT, and described tiltedly envelope low side contacts with end socket tube sheet.
4. a kind of tubular heat exchanger 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.
5. a kind of tubular heat exchanger according to claim 2, 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.
6. a kind of tubular heat exchanger according to claim 5, it is characterized in that, described bobbin carriage other end passage port is provided with flange, described shell head is provided with flange, flange on 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, also include the assorted pocket of some storages, pocket body drawn together by the assorted stomacher of described storage, pocket pipe, threaded with the assorted hole of the storage on tube side cutoff board in described 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.
7. a kind of tubular heat exchanger 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 sealing, 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.
8. a kind of tubular heat exchanger according to claim 7, 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, regulate spring, sliding valve core, one end of described sliding valve core connects the one end regulating spring, the other end contact valve casing of sliding valve core, regulate the other end contact valve casing of spring, described valve casing regulates connected entrance by two and turns on shell side inlet pipe, described sliding valve core regulates connected entrance by two and separates, described sliding valve core is provided with and regulates road in the spool that connected entrance connection is got up by two, 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 connects with feedback pipe one end, the feedback pipe other end is communicated to inlet pipeline.
9. a kind of tubular heat exchanger according to claim 7 or 8, 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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| Application Number | Priority Date | Filing Date | Title |
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| CN201510079900.4A CN104634141B (en) | 2015-02-15 | 2015-02-15 | A kind of tubular heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510079900.4A CN104634141B (en) | 2015-02-15 | 2015-02-15 | A kind of tubular heat exchanger |
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| CN104634141B true CN104634141B (en) | 2016-06-08 |
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| CN201510079900.4A Expired - Fee Related CN104634141B (en) | 2015-02-15 | 2015-02-15 | A kind of tubular heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579125B (en) * | 2019-09-19 | 2020-11-17 | 胡小青 | Counter-flow corrugated preheating plate exchanger for gas-gas heat exchange |
| CN111721146A (en) * | 2020-06-19 | 2020-09-29 | 哈尔滨锅炉厂有限责任公司 | Heat conduction oil-water heat exchanger for efficient biomass coupling power generation |
| CN115424829A (en) * | 2022-09-13 | 2022-12-02 | 龙佰武定钛业有限公司 | Large-scale DC rectification ABB transformer oil-water cooling system |
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| DE102008006559A1 (en) * | 2008-01-29 | 2009-07-30 | Linde Ag | Straight tube heat exchanger with compensator |
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| US2063490A (en) * | 1934-12-04 | 1936-12-08 | Davis Engineering Corp | Method of making an expansion joint |
| WO1993013378A1 (en) * | 1991-12-20 | 1993-07-08 | Siemens Aktiengesellschaft | Cooling-air cooling unit for gas turbines |
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| Publication number | Publication date |
|---|---|
| CN104634141A (en) | 2015-05-20 |
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