CN104654836B - Shell and tube heat-exchanger rig - Google Patents
Shell and tube heat-exchanger rig Download PDFInfo
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- CN104654836B CN104654836B CN201510081678.1A CN201510081678A CN104654836B CN 104654836 B CN104654836 B CN 104654836B CN 201510081678 A CN201510081678 A CN 201510081678A CN 104654836 B CN104654836 B CN 104654836B
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Abstract
The invention discloses a kind of shell and tube heat-exchanger rig, 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 rig. 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 shell and tube heat-exchanger rig.
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 rig of structural damage.
To achieve these goals, the present invention is by the following technical solutions:
A kind of shell and tube heat-exchanger rig, 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, described heat exchanger tube is provided with at least one heat exchange copper sheathing, described heat exchange copper sheathing is coaxial with self connected heat exchanger tube and mutual clamping, described heat exchange copper sheathing is circular, the external diameter of described heat exchange copper sheathing and the ratio of heat exchanger tube external diameter are more than three, it is provided with impeller inducer in described end socket, described impeller inducer includes water conservancy diversion rotating shaft, some guide vanes, described water conservancy diversion rotating shaft and end socket are rotationally connected, described water conservancy diversion rotating shaft is horizontally disposed with and vertical with heat exchanger tube, the rectangular tabular of described guide vane, the length direction of described guide vane is parallel with the length direction of water conservancy diversion rotating shaft, described shell side inlet pipe is in bobbin carriage top, the feed liquor direction of shell side inlet pipe is from top to bottom, gear liquid protection transverse slat it is provided with in described bobbin carriage, transverse slat is protected towards gear liquid in the feed liquor direction of described shell side inlet pipe, described gear liquid protection transverse slat is by protecting connecting plate to be connected to shell side inlet pipe lower end.
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.
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.
Fig. 9 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 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, heat exchange copper sheathing 47, water conservancy diversion rotating shaft 48, guide vane 49, gear liquid protection transverse slat 50, protection connecting plate 51.
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, Fig. 8, in embodiment shown in Fig. 9, a kind of shell and tube heat-exchanger rig, including tube side portion, shell side portion, some supports 1, described tube side portion includes tube side inlet pipe 2, tube side goes out pipe 3, many heat exchanger tubes 4, described shell side portion includes horizontal outer cover of heat exchanger body, shell side inlet pipe 5, shell side goes out pipe 6, described outer cover of heat exchanger body is by end socket 7, shell head 8, the bobbin carriage 9 that two ends are port collectively forms, it is provided with fixed tube sheet 10 between described shell head and bobbin carriage, end socket tube sheet 11 it is provided with between described end socket and bobbin carriage, described heat exchanger tube two ends are connected to fixed tube sheet, on end socket tube sheet, described heat exchanger tube is in bobbin carriage, one end of heat exchanger tube is communicated to inside end socket, the other end of heat exchanger tube is communicated to inside shell head, described tube side inlet pipe, tube side goes out pipe and is both connected on shell head, described shell side inlet pipe, shell side goes out pipe and is both connected on bobbin carriage, one piece of tube side cutoff board 12 will be divided into the tube side influent stream chamber 13 connected with tube side inlet pipe inside shell head, the tube side outflow lumen 14 that pipe connects is gone out with tube side, described bobbin carriage is provided with expansion joint 15, described expansion joint wall thickness is less than bobbin carriage wall thickness, it is two half chests sections that bobbin carriage is cut off by described expansion joint, described expansion joint includes two oblique ring flat-plates 16 that close up, one covering ring flat-plate 17, two oblique ring flat-plates that close up are connected in two half chests sections, between the tank wall of two half chests sections, gap is for expanding notch, the 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, form 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 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, described heat exchanger tube is provided with at least one heat exchange copper sheathing 47, described heat exchange copper sheathing is coaxial with self connected heat exchanger tube and mutual clamping, described heat exchange copper sheathing is circular, the external diameter of described heat exchange copper sheathing and the ratio of heat exchanger tube external diameter are more than three, it is provided with impeller inducer in described end socket, described impeller inducer includes water conservancy diversion rotating shaft 48, some guide vanes 49, described water conservancy diversion rotating shaft and end socket are rotationally connected, described water conservancy diversion rotating shaft is horizontally disposed with and vertical with heat exchanger tube, the rectangular tabular of described guide vane, the length direction of described guide vane is parallel with the length direction of water conservancy diversion rotating shaft, described shell side inlet pipe is in bobbin carriage top, the feed liquor direction of shell side inlet pipe is from top to bottom, gear liquid protection transverse slat 50 it is provided with in described bobbin carriage, transverse slat is protected towards gear liquid in the feed liquor direction of described shell side inlet pipe, described gear liquid protection transverse slat is by protecting connecting plate 51 to be connected to shell side inlet pipe lower end.
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.
In order to ensure heat exchange efficiency; in many cases inlet hydraulic, liquid feeding end flow velocity all can not be too little; liquid enters after in bobbin carriage from shell side inlet pipe; can directly impact the heat exchanger tube of inside; easily cause heat exchanger tube stress excessive, deformation; gear liquid protection transverse slat blocks the direct impact of shell side inlet pipe feed liquor; initial for liquid feed liquor is flowed to and changes into the direction being approximately parallel to heat exchanger tube by mating protection connecting plate together; thus exchanging heat pipe and bobbin carriage inner structure defines the protection of effective protecting against shock; improve job stability, extend heat exchanger tube service life.
First impeller inducer plays the effect of water conservancy diversion in end socket, heat exchanger tube divides two kinds: the first is directly to connect tube side influent stream chamber, the second is directly to connect tube side outflow lumen, from the liquid that the first heat exchanger tube flows out, that impacts guide vane after entering end socket meets the liquid level (surface directly impacted by liquid, be equivalent to the windward side of fan blade), impeller inducer is rotated, the impeller being rotated up from below can the liquid in end socket upwards, promote towards end socket inwall direction, the impeller of all the other positions also can promote liquid towards end socket inwall direction, thus the glide path of U-shaped like can be formed in end socket, make the liquid flowing in whole end socket smooth and easy, glide path is stable, can effectively prevent sinuous flow in end socket, turbulent flow is excessive too much, improve liquid flow stability, and, impeller inducer maintains the action that the liquid in end socket is pushed to the second heat exchanger tube import in the course of the work all the time, also it is beneficial to liquid to flow out smoothly.
Shell and tube heat-exchanger rig 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.
In whole tube side, owing to heat exchanger tube cross section is little, fluid flow is relatively few, therefore requires higher to flow velocity, flowing smoothness, but in shell side (bobbin carriage in), is more that requirement liquid heat exchange is abundant, glide path long enough. Between heat exchange copper sheathing and heat exchanger tube can direct heat transfer, the heat conductivity of copper and deformability are all fine, therefore first ensure not easily to oppress heat exchanger tube when expanding with heat and contract with cold. Heat exchange copper sheathing external diameter, more than three times of heat exchanger tube external diameters, is therefore effectively improved heat exchange area, and in bobbin carriage, the heat exchange effect of hot liquid gets a promotion. And, when not having heat exchange copper sheathing, the liquid along heat exchanger tube flowing is streamlined flow from local, after having had heat exchange copper sheathing, these liquid are easily subject to stop, thus changing glide path, become many with contacting between heat exchanger tube, heat-exchange time relative growth, and form shallow bid sinuous flow, substantially without affecting in bobbin carriage under the premise of flow of block bulk liquid flow, well improve Local Heat Transfer area, extend the Local Heat Transfer time, thus entirety improves the heat exchange efficiency of the present invention.
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 shell and tube heat-exchanger rig, 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, described heat exchanger tube is provided with at least one heat exchange copper sheathing, described heat exchange copper sheathing is coaxial with self connected heat exchanger tube and mutual clamping, described heat exchange copper sheathing is circular, the external diameter of described heat exchange copper sheathing and the ratio of heat exchanger tube external diameter are more than three, it is provided with impeller inducer in described end socket, described impeller inducer includes water conservancy diversion rotating shaft, some guide vanes, described water conservancy diversion rotating shaft and end socket are rotationally connected, described water conservancy diversion rotating shaft is horizontally disposed with and vertical with heat exchanger tube, the rectangular tabular of described guide vane, the length direction of described guide vane is parallel with the length direction of water conservancy diversion rotating shaft, described shell side inlet pipe is in bobbin carriage top, the feed liquor direction of shell side inlet pipe is from top to bottom, gear liquid protection transverse slat it is provided with in described bobbin carriage, transverse slat is protected towards gear liquid in the feed liquor direction of described shell side inlet pipe, described gear liquid protection transverse slat is by protecting connecting plate to be connected to shell side inlet pipe lower end.
2. shell and tube heat-exchanger rig according to claim 1, it is characterized in that, described bobbin carriage one end passage port is provided with ladder flange edge, described end socket is provided with ladder flange edge, ladder flange edge on bobbin carriage turns over edge seal with the ladder on end socket and docks, and form neck tube at joint, the stuffing-box pipe 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. shell and tube heat-exchanger rig according to claim 2, it is characterized in that, the inner tubal wall of described stuffing-box pipe is provided with the oblique seal ring of filler, the oblique seal ring of described filler is between end socket tube sheet and end socket, the oblique seal ring of described filler has that tiltedly to seal low side, tiltedly envelope high-end, described 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. shell and tube heat-exchanger rig 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.
5. shell and tube heat-exchanger rig 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. shell and tube heat-exchanger rig according to claim 5, it is characterized in that, described bobbin carriage other end passage port is provided with flange, described shell head is provided with flange, flange on 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. shell and tube heat-exchanger rig 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. shell and tube heat-exchanger rig according to claim 7, it is characterized in that, described shell side inlet pipe is provided with feedback regulation portion, described feedback regulation portion 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. the shell and tube heat-exchanger rig 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 |
|---|---|---|---|
| CN201510081678.1A CN104654836B (en) | 2015-02-15 | 2015-02-15 | Shell and tube heat-exchanger rig |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510081678.1A CN104654836B (en) | 2015-02-15 | 2015-02-15 | Shell and tube heat-exchanger rig |
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| Publication Number | Publication Date |
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| CN104654836A CN104654836A (en) | 2015-05-27 |
| CN104654836B true CN104654836B (en) | 2016-06-15 |
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| CN201510081678.1A Expired - Fee Related CN104654836B (en) | 2015-02-15 | 2015-02-15 | Shell and tube heat-exchanger rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109759000B (en) * | 2019-01-18 | 2024-04-12 | 山东诺为制药流体***有限公司 | Multithread baffle box and reactor |
| CN111776191B (en) * | 2020-07-03 | 2022-05-17 | 北海市景泰达科技有限公司 | Novel shell and tube heat exchanger and marine refrigerating system |
| CN115364778B (en) * | 2022-08-24 | 2024-03-08 | 江苏江锅智能装备股份有限公司 | Fluidized bed |
| CN117346392B (en) * | 2023-12-05 | 2024-03-19 | 江苏世林博尔制冷设备有限公司 | Condenser of refrigeration equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2063490A (en) * | 1934-12-04 | 1936-12-08 | Davis Engineering Corp | Method of making an expansion joint |
| CN1971192A (en) * | 2005-11-22 | 2007-05-30 | 淄博创尔沃中央空调有限公司 | High efficiency out-tubular condensing heat-exchanger |
| CN101943527A (en) * | 2010-09-29 | 2011-01-12 | 中原工学院 | Multiple shell pass countercurrent-growth tube heat exchanger |
| CN202511657U (en) * | 2012-03-27 | 2012-10-31 | 中能纪（北京）国际科技有限公司 | Spiral grooved tube anti-corrosion heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57100873A (en) * | 1980-12-15 | 1982-06-23 | Kobe Steel Ltd | Manufacture of multitubular type heat exchanger |
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2015
- 2015-02-15 CN CN201510081678.1A patent/CN104654836B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2063490A (en) * | 1934-12-04 | 1936-12-08 | Davis Engineering Corp | Method of making an expansion joint |
| CN1971192A (en) * | 2005-11-22 | 2007-05-30 | 淄博创尔沃中央空调有限公司 | High efficiency out-tubular condensing heat-exchanger |
| CN101943527A (en) * | 2010-09-29 | 2011-01-12 | 中原工学院 | Multiple shell pass countercurrent-growth tube heat exchanger |
| CN202511657U (en) * | 2012-03-27 | 2012-10-31 | 中能纪（北京）国际科技有限公司 | Spiral grooved tube anti-corrosion heat exchanger |
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| CN104654836A (en) | 2015-05-27 |
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Address after: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant after: China Jiliang University Address before: Hangzhou City, Zhejiang province 310018 Jianggan District Xiasha Higher Education Park source Street No. 258 Applicant before: China Jiliang University |
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