CN109269339A - Tube sheet component and heat exchanger including the tube sheet component - Google Patents
Tube sheet component and heat exchanger including the tube sheet component Download PDFInfo
- Publication number
- CN109269339A CN109269339A CN201811323860.3A CN201811323860A CN109269339A CN 109269339 A CN109269339 A CN 109269339A CN 201811323860 A CN201811323860 A CN 201811323860A CN 109269339 A CN109269339 A CN 109269339A
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- Prior art keywords
- tube sheet
- pore
- tube
- heat exchanger
- link slot
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- 239000011148 porous material Substances 0.000 claims abstract description 129
- 238000007789 sealing Methods 0.000 claims abstract description 99
- 239000000463 material Substances 0.000 claims description 16
- 239000007769 metal material Substances 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 39
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- -1 polytetrafluoroethylene Polymers 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0229—Double end plates; Single end plates with hollow spaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of tube sheet component includes at least the first tube sheet and the second tube sheet, at least one first pore is provided in first tube sheet, at least one second pore is provided in second tube sheet, first pore can be aligned with corresponding second pore, so that the heat exchanger tube of heat exchanger can pass through the first pore and the second pore and be threaded through on tube sheet component.Wherein, when assembled together, the surface of the first tube sheet and the second tube sheet faced each other at least partly contacts with each other, and, it is provided with first sealing device between the first tube sheet and heat exchanger tube, and is provided with the second sealing device between the second tube sheet and heat exchanger tube.The tube sheet modular construction improves the sealing performance between tube sheet and heat exchanger tube.Also disclose the heat exchanger including the tube sheet component.
Description
Technical field
The present invention relates to a kind of tube sheet components for heat exchanger, further further relate to a kind of include the tube sheet component
Heat exchanger, which is particularly suitable for the heat exchange of corrosive fluids environment.
Background technique
Shell-and-tube exchanger is widely used in many industrial circles, mainly includes shell, at least one heat-transfer pipe
It is mounted in shell with components, heat-transfer pipes such as tube sheets for example, by end is arranged in tube sheet, two kinds of different fluids of temperature
Respectively in the inside and outside flowing of heat-transfer pipe, wherein heat-transfer pipe internal flow is known as " tube side fluid ", and the fluid outside heat-transfer pipe is known as
" shell-side fluid ".The heat exchange between tube side fluid and shell-side fluid is realized by the outer wall of heat-transfer pipe.
Current conventional connection type is connected by swivel nut between heat-transfer pipe and tube sheet, and swivel nut connection is especially applied
In corrosive fluids environment, wherein heat exchanger tube is made of resistant materials such as ceramics, graphite.Also, it in an assembling process, needs
The connection and fixation between exchanger tubes and tubesheets are realized using structures such as swivel nut, sealing rings.But, in use,
Sealing ring may be worn, meanwhile, corrosive fluid is possible to generate corrosion to sealing ring, in this way, in a period of time
Afterwards, sealing ring can fail, and corrosive fluid is caused to be flowed into shell side side, pollute shell-side fluid.
To solve the problems, such as that corrosive fluid pollutes shell-side fluid, double tubesheet structure also proposed in the prior art.But
It is that there are still some problems in use for double tubesheet structure.Specifically, therein close for double tubesheet structure
Seal because of the corrosion of corrosive fluid or other reasons it is possible to fail, in order to carry out replacement dimension to the sealing ring of failure
It repairs, needs completely to remove two layers of tube plate structure, maintenance load is big.
Therefore, it in heat exchanger field, especially for the heat exchanger to work under corrosive fluid environment, needs
There is improved structure, can be improved the leakproofness between tube sheet and heat exchanger tube, and further, can also realize reduction maintenance
At least one of the purpose of workload, the operating pressure of raising heat exchanger.
Summary of the invention
The present invention is to solve at least one of the problems of above prior art and make, and the purpose is to mention
For a kind of heat exchanger pipe board group part for improving structure, the leakproofness between tube sheet and heat exchanger tube can be improved.
Tube sheet component of the invention is used for heat exchanger, which includes at least the first tube sheet and the second tube sheet, the
It is provided at least one first pore in one tube sheet, at least one second pore is provided in the second tube sheet, the first pore can
It is aligned with corresponding second pore, so that the heat exchanger tube of heat exchanger can pass through the first pore and the second pore and be threaded through pipe
On board group part, wherein when assembled together, the surface of the first tube sheet and the second tube sheet faced each other is at least partly mutual
Contact, and, first sealing device is provided between the first tube sheet and heat exchanger tube, and set between the second tube sheet and heat exchanger tube
It is equipped with the second sealing device.
In said structure, sealing is respectively set in the first pore and heat exchanger tube and between the second pore and heat exchanger tube
Device, each sealing device can independently play sealing function, also only need to be close to this even if one of sealing device fails
Seal apparatus repairs replacement, will not have an impact to other sealing devices.It improves between tube sheet and heat exchanger tube as a result,
Sealing performance reduces the risk of heat exchanger leakage.
Implement in structure a kind of specific, the first pore is counterbore, including with small diameter first part and tool
There is larger-diameter second part, is formed with stage portion between the first and second, first sealing device is first
It is arranged between the first tube sheet and heat exchanger tube at the second part of pore.
In addition, the second pore can also be counterbore, including the first part with small diameter and have larger-diameter the
Two parts are formed with stage portion between the first part and second part of the second pore, and the second sealing device is in the second pore
Second part at be arranged between the second tube sheet and heat exchanger tube.
For the specific structure of sealing device, in a kind of preferable embodiment, first sealing device includes:
One sealing ring, the first sealing ring abut the stage portion in the first pore；And first fixing piece, the first fixing piece is from the first pipe
The second part in hole is inserted between the inner wall of the first pore and the outer wall of heat exchanger tube, and the first sealing ring is fixed in place.
Similarly, the second sealing device may also comprise: the second sealing ring, and the second sealing ring abuts the step in the second pore
Portion；And second fixing piece, the second fixing piece are inserted in the inner wall and heat exchanger tube of the second pore from the second part of the second pore
Outer wall between, and it is the second sealing ring is fixed in place.
Further, the first fixing piece is the first swivel nut, wherein in being formed in the inner wall of the second part of the first pore
Screw thread is formed with the external screw thread to match with the internal screw thread of the second part of the first pore on the outer wall of the first swivel nut.
Second fixing piece can also be the second swivel nut, wherein it is formed with internal screw thread in the inner wall of the second part of the second pore,
The external screw thread to match with the internal screw thread of the second part of the second pore is formed on the outer wall of second swivel nut.
Preferably, being formed with the first gap between the first fixing piece and the outer wall of heat exchanger tube；And/or in the second fixing piece
The second gap is formed between the outer wall of heat exchanger tube.
Pass through the setting in the gap, it is possible to reduce the frictional resistance between each tube sheet and heat exchanger tube.In this way, carrying out hot friendship
When changing, if generating stress on heat exchanger tube since thermal expansion coefficient is different, heat exchanger tube can be slided relative to each tube sheet, and
It will not be ruptured because of the stress, sealing device will not be caused to fail.
Preferably, the thickness of the first part of the first pore is equal to or more than the thickness of sealing ring.Such setting can
Guarantee the bonding strength at the first pore, while material can be saved to a certain extent again.
Preferably, being equipped with link slot between the first tube sheet and the second tube sheet, each first pore is connected to by link slot
It is connected together, each first pore is connected together together and/or by each second pore especially；And in the first tube sheet
Or second be formed with discharge-channel in tube sheet, discharge-channel is connected with link slot, and leads to the outside of tube sheet component.Wherein,
A kind of exemplary structure of discharge-channel is letdown tank.Certainly, discharge-channel can also be other forms, such as across first or the
Two tube sheets extend to external discharge orifice etc..
Wherein it is possible to link slot is formed by the way that groove is arranged on the surface of the second tube sheet in the first tube sheet,
Groove can be set in the second tube sheet on the surface of the first tube sheet to form link slot, or can in the first tube sheet and
Second tube sheet it is facing the groove being aligned with each other is set simultaneously on the surface, link slot is collectively formed.
By setting link slot and discharge-channel, when leaking, the fluid leaked out can be via link slot and discharge
Channel flows to outside, thus operator can from external observation to or by discharge-channel exit be arranged detecting instrument inspection
Measure whether sealing device leaks.
Preferably, the width of link slot and/or letdown tank is more than or equal to 0.5mm；And/or link slot and/or letdown tank
Depth is more than or equal to 0.5mm.Preferably, above-mentioned width is 1-5mm, above-mentioned depth is 1-5mm.
In this way, while guaranteeing that leak fluid can be smoothly discharged, additionally it is possible to avoid heat exchange efficiency from declining, guarantee manufacture
Cost will not significantly rise.
Preferably, in mounted state, one end of the first tube sheet of direction of the second sealing device and the second tube sheet
Circumferential gap is formed between surface towards the first tube sheet, circumferential gap surrounds heat exchanger tube, and is connected with link slot.This
Sample allows the fluid in link slot to flow in discharge-channel around heat exchanger tube.
And in the specific structure that above-mentioned second sealing device includes the second sealing ring and the second fixing piece, specifically this
Two fixing pieces back on the second sealing ring end and the second tube sheet the surface towards the first tube sheet between be formed with this week
To gap.
In addition, the first tube sheet and the second tube sheet are preferably brought into tight contact with each other, so as to improve its integral strength.Specifically
For, other than being provided with above-described first and second pore, link slot and the part of circumferential gap, the first tube sheet with
The rest part on the opposed facing surface of the second tube sheet all contacts with each other, and to increase contact area, improves its intensity.
Preferably, the end close to the first sealing ring of the first swivel nut does not include external screw thread；And/or second swivel nut lean on
The end of nearly second sealing ring does not include external screw thread.Such structure can optimize the compression to first/second sealing ring.Pass through
First/second sealing ring is compressed, can make its compression, and then clamps heat exchanger tube, and is played between tube sheet and heat exchanger tube close
Envelope effect.
In addition, the periphery of the first tube sheet is formed at least one first screw hole, the periphery of the second tube sheet is formed at least one
A second screw hole, each first screw hole can be aligned with each second screw hole, to allow bolt to pass through, wherein the first screw hole compared with
It goodly is counterbore, bolt is inserted into from the second tube sheet side and stretches out and cooperate with nut thread, nut quilt from the first tube sheet side
It is contained in the first screw hole.In this way it can be ensured that the first tube sheet and the second tube sheet are pressed together.
In tube sheet component of the invention, the first tube sheet is made of resistant material, and the second tube sheet is made of metal material.Institute
Heat exchanger tube is stated to be made of carbofrax material.Such structure can be applicable in the environment of such as corrosive fluid, such as with corrosion
Property fluid be tube side fluid.
In another structure, the first pore can also be in other shapes, such as form annular groove in the first pore, recessed
The first sealing ring is accommodated in slot.In this configuration, above-mentioned first swivel nut can be omitted, i.e., first sealing device is by the first sealing ring
It constitutes.Further, in this configuration, it equally may be provided with the knot such as above-described link slot, discharge-channel, circumferential gap
Structure.
The invention further relates to a kind of heat exchanger, which includes shell, tube side end socket and setting in shell and pipe
Tube sheet component as described above between journey end socket.
Wherein, the tube side end socket of heat exchanger and shell are respectively formed with connecting flange, with respectively with tube sheet component
One in first tube sheet and the second tube sheet connects.Alternatively, tube side end socket can be with one one in the first tube sheet and the second tube sheet
Body is formed and/or shell can be integrally formed with another in the first tube sheet and the second tube sheet.
Detailed description of the invention
In the accompanying drawings:
Fig. 1 a shows the end-view of the heat exchanger of the first embodiment of the present invention.
Fig. 1 b shows the partial sectional view for the heat exchanger that the line A-A in Fig. 1 a is obtained.
Fig. 2 shows the partial enlarged views of the part I in Fig. 1 b.
Fig. 3 a shows the front view of the tube side side pipe plate of the heat exchanger of first embodiment.
Fig. 3 b shows the sectional view along the obtained tube side side pipe plate of the line B-B of Fig. 3 a.
Fig. 4 shows a kind of front view of distressed structure of tube side side pipe plate.
Fig. 5 a shows the end-view of the heat exchanger of the second embodiment of the present invention.
Figure 5b shows that the partial sectional views of the obtained heat exchanger of the line C-C in Fig. 5 a.
Fig. 6 shows the partial sectional view of the heat exchanger of the third embodiment of the present invention.
Fig. 7 shows the partial enlarged view of the part II in Fig. 6.
Specific embodiment
To facilitate the understanding of the present invention, below in conjunction with attached drawing, embodiments of the present invention is described in detail.It should
Solution, shown in the drawings is only presently preferred embodiments of the present invention, and is not construed to limit the scope of the present.This field
Technical staff can on the basis of embodiment shown in the drawings to the present invention carry out various obvious modifications, modification,
Equivalence replacement, and under the premise of not contradicting, the technical characteristic in different embodiments discussed below can be any
Combination, and these all fall within the scope and spirit of the invention.
<first embodiment>
Fig. 1 a~Fig. 4 shows the first embodiment of the present invention.The heat that Fig. 1 a shows the first embodiment of the present invention is handed over
The end-view of parallel operation 100, Fig. 1 b then show the partial sectional view obtained along the line A-A in Fig. 1.
As seen in figure la and lb, heat exchanger 100 includes shell (or alternatively referred to as cylinder) 110,120 and of tube side end socket
Tube sheet component 130 between shell 110 and tube side end socket 120.
Shell side adapter tube 111 is provided on shell 110, which is connected on shell 110, on the other end
It is optionally provided with shell side pipe connecting flange 112, for being connected with external pipeline.Shell-side fluid can take over via shell side
111 flow into inside shell 110.
It is provided with tube side adapter tube 121 on tube side end socket 120, is similar to shell side adapter tube 111, the connection of 121 one end of tube side adapter tube
In tube side end socket 120, the other end is optionally provided with tube side pipe connecting flange 122, for being connected with external pipeline.Tube side stream
Body can be flowed into tube side end socket 120 via the tube side adapter tube 121, and then flow into the heat exchange being fixed on tube sheet component 130
In pipe 140.
In the structure shown in Fig. 1 b, tube sheet component 130 includes two tube sheets, respectively tube side side pipe plate (or first
Tube sheet) 131 and shell side side pipe plate (or second tube sheet) 132.In the circumferential direction of tube side side pipe plate 131 and shell side side pipe plate 132
It is respectively formed with several screw holes 135 (see Fig. 3 a and 3b).During installation, on tube side side pipe plate 131 and shell side side pipe plate 132
Corresponding screw hole 135 is aligned with each other, and allows bolt 136 to pass through screw hole 135, thus by tube side side pipe plate 131 and shell side side pipe plate 132
It links together.
It should be noted that Fig. 1 b illustrates only the partial sectional view of the one end (right side) of heat exchanger 100, heat is handed over
Parallel operation 100 further includes in the part in the left side of figure, that is, is also connected with together in being located in Fig. 1 b on the end in left side for shell 110
The tube sheet component 130 and tube side end socket 120 of spline structure.
Further, tube side end socket method is formed on that one end that tube side end socket 120 is in contact with tube side side pipe plate 131
Orchid 123 is also formed with the screw hole that can be aligned with screw hole 135 on the tube side cover flange 123, and bolt 136 may pass through the screw hole
135, so that tube sheet component 130 is connected with tube side end socket 120.As shown in Figure 1 b, in the close tube side end socket of bolt 136
Nut 137 is connected on 120 one end, to realize final fixation.
Preferably, screw hole 135 on shell side side pipe plate 13 can be counter bore structure, so as at it towards tube side end socket
Tube sheet nut 138 is set at 120 side, to help to ensure that both tube side side pipe plate 131 and shell side side pipe plate 132 are facing
Surface between at least partly contact.Moreover, by the way that the tube sheet nut 138 is arranged, it can be first by tube side side pipe plate 131 and shell
Journey side tube sheet 132 is fixed together, and forms complete tube sheet component 130, is then again connected to tube sheet component 130 as a whole
On tube side end socket 120.And when needing to clean tube side end socket 120, tube side end socket 120 can also be removed, it is not necessary to will
Tube side side pipe plate 131 and shell side side pipe plate 132 separate, to operate more convenient.
The specific structure of tube sheet component 130 is further described below in conjunction with Fig. 2.Fig. 2 is the part of the part I in Fig. 1 b
Enlarged drawing, therefrom as it can be seen that be formed on tube side side pipe plate 131 at least one, preferably a plurality of first pore 133, and in shell side
Be formed on side pipe plate 132 at least one, preferably a plurality of second pore 134, wherein each first pore 133 respectively with second pipe
Hole 134 is corresponding, such as the quantity of the first pore 133 is identical as the quantity of the second pore 134, and during installation, and corresponding
One pore 133 and the second pore 134 are aligned with each other, to allow heat exchanger tube 140 to pass through and be fixed on the first pore 133 and second
In pore 134.With multiple first pores 133 and in the case where the second pore 134, heat exchanger 100 accordingly also includes
Multiple heat exchanger tubes 140.Three the first pores 133 and three second can be seen in the figure in the section view of heat exchanger 100 shown in Fig. 1
Pore 134, but for the sake of clarity, it is only displayed in intermediate the first pore 133 and the second pore 134 inserted with heat exchanger tube
140, but those of skill in the art would appreciate that in use, the first pore 133 and the second pore 134 of upper and lower two sides
In be equally also inserted into corresponding heat exchanger tube 140.
For each heat exchanger tube 140, first sealing device is provided between heat exchanger tube 140 and the first pore 133.
In preferred construction shown in Fig. 2, the first pore 133 is counterbore form comprising the first part 1331 with small diameter
With with larger-diameter second part 1332.The basic phase of outer diameter of the diameter of first part 1331 and corresponding heat exchanger tube 140
Together, it is slightly larger than the outer diameter of heat exchanger tube 140, preferably to allow that successfully heat exchanger tube 140 is inserted into the first pore 133.The
The diameter of the second part 1332 of one pore 133 is greater than the outer diameter of heat exchanger tube 140, so as at the second part 1332 by the
One sealing device is arranged between heat exchanger tube 140 and the first pore 133.
In structure shown in Fig. 2, first sealing device includes that tube side side swivel nut (or first swivel nut) 151 and first is close
Seal 152.First sealing ring 152 is preferably O-ring seals, and the first part 1331 by being located at the first pore 133 and the
Stepped part institute support between two parts 1332, and it is fixed in place by tube side side swivel nut 151, and preferably by tube side side spiral shell
It covers 151 effect and is compressed, so that tube side side swivel nut 151 serves as the first fixing piece for fixing the first sealing ring 152.
In a kind of preferable ground structure, shape on the inner wall with larger-diameter second part 1332 of the first pore 133
At there is internal screw thread, also, external screw thread is correspondingly formed on the outer wall of tube side side swivel nut 151.Pass through internal screw thread and external screw thread
Between cooperation, tube side side swivel nut 151 can be made to be located between the inner wall of the second part 1332 and the outer wall of heat exchanger tube 140,
And can against and further compress the first sealing ring 152.
In preferred construction shown in Fig. 2 as it can be seen that between the inner wall of tube side side swivel nut 151 and the outer wall of heat exchanger tube 140
Also reserve certain gap.In other words, not in contact with heat exchanger tube 140 is only logical between heat exchanger tube 140 and tube side side swivel nut 151
The contact crossed between the first part 1331 of the first pore 133 and be fixed on tube side side pipe plate 131.In this way, working as heat exchanger tube
140 relative to tube side side pipe plate 131 when sliding axially, and frictional resistance between the two is smaller, thus reduce because shell 110 with
Sealing effect is reduced or is produced on heat exchanger tube 140 in heat exchanging process caused by the thermal expansion coefficient of heat exchanger tube 140 is different
Raw stress and causing exchanges heat the risk of tracheal rupture.
Further preferably, the thickness of the first part 1331 of the first pore 133, i.e. from first part 1331 and second
Stepped part between points 1332 to the shell side side surface of tube side side pipe plate 131 distance greater than the first sealing ring 152 thickness or
It is the internal diameter of the first sealing ring 152 and the difference of outer diameter that person, which says,.In this way, still can under the premise of saving material as much as possible
Enough ensure bonding strength.
In addition, the end close to the first sealing ring 152 in tube side side swivel nut 151 does not preferably include external screw thread.This
The compression to the first sealing ring 152 can be better achieved in the setting of sample, to realize sealing.
Similar with first sealing device, the second pipe of heat exchanger tube 140 and shell side side pipe plate 132 is arranged in the second sealing device
Between hole 134.Wherein, the second pore 134 is also preferably counterbore form comprising the first part 1341 with small diameter
With with larger-diameter second part 1342.The diameter of the second part 1342 of second pore 134 is greater than the outer of heat exchanger tube 140
Diameter, so as to which second sealing device is arranged between heat exchanger tube 140 and the second pore 134 at the second part 1342.
Second sealing device includes the second sealing ring 154 of shell side side swivel nut 153 and preferably O-ring seals.Second
Stepped part institute support between first part 1341 and second part 1342 of the sealing ring 154 by being located at the second pore 134, and lead to
It is fixed in place to cross shell side side swivel nut (or second swivel nut) 153, i.e., shell side side swivel nut 153 is served as fixing the second sealing ring
153 the second fixing piece.
In a kind of preferred construction, it is also formed with internal screw thread on the inner wall of the second part 1342 of the first pore 134, and
It is correspondingly formed with external screw thread on the outer wall of shell side side swivel nut 153, tube side side swivel nut 151 is located in this to be connected through a screw thread
Between the inner wall of second part 1342 and the outer wall of heat exchanger tube 140, and can against and further compress the second sealing ring
154。
Certain gap can be similarly reserved between the inner wall of shell side side swivel nut 153 and the outer wall of heat exchanger tube 140, thus
When heat exchanger tube 140 slides axially relative to shell side side pipe plate 132, frictional resistance between the two is smaller, thus reduce because
Sealing effect reduces or is exchanging heat in heat exchanging process caused by shell 110 is different from the thermal expansion coefficient of heat exchanger tube 140
On pipe 140 generate stress and cause exchange heat tracheal rupture risk.
In addition, the thickness of the first part 1341 of the second pore 134, i.e. from first part 1341 and second part 1342 it
Between stepped part to the shell side side surface of shell side side pipe plate 132 distance less than the second sealing ring 154 thickness.
In shell side side, the end close to the second sealing ring 154 of swivel nut 153 does not also preferably include external screw thread.It is such
The compression that can be better achieved to the second sealing ring 154 is set, to realize sealing.Herein, the second sealing ring 154 does not include
The length of externally threaded end is greater than 0.5mm, preferably in the range of 1-5mm.And this of tube side side swivel nut 151 does not include
The outer diameter of externally threaded end is equal to the externally threaded bottom diameter on tube side side swivel nut 151, preferably less than the bottom diameter, thus really
Protecting the end will not interference with the internal screw thread on the inner wall of 133 second part 1332 of the first pore.
As further shown in Figure 2, link slot 161 is provided between tube side side pipe plate 131 and shell side side pipe plate 132
With letdown tank 162.At least one in the opposed facing surface of tube side side pipe plate 131 and shell side side pipe plate 132 can be passed through
Groove is set on a surface to form link slot 161 and letdown tank 162.Link slot is more clearly shown in Fig. 3 a and 3b
161 and letdown tank 162 structure, wherein being by taking tube side side pipe plate 131 as an example.As in Fig. 3 a and 3b as it can be seen that in tube side side pipe plate
It is formed with multiple first pores 133 on 131, is specifically formed in the center first at the center of tube side side pipe plate 131 and manages
Hole 133 and six the first pores 133 being arranged around first pore of center 133.It is provided between each first pore 133
Link slot 161, so that at least one of each first pore 133 and other first pores 133 are connected.
In preferable implementation structure shown in Fig. 2, six the first pores 133 are around centrally located first pore 133
It circumferentially arranges to shape, corresponding, six the first pores that a part of link slot 161 can also be arranged circumferentially
133 are formed as closed circle, the polygon etc. centered on centrally located first pore 133.
All link slots 161 finally converge to discharge-channel, which is communicated to tube side side pipe for link slot 161
The outside of plate 131 and shell side side pipe plate 132.A kind of concrete form of discharge-channel is, for example, letdown tank 162 shown in Fig. 3.
When any one in first sealing device and the second sealing device leaks, the tube side fluid and/or shell that leak
Cheng Liuti will be flowed into link slot 161, and be flowed out through letdown tank 162.In this way, from can coming from the outside of heat exchanger 100
To or by discharge-channel exit setting detecting instrument detect whether first sealing device and the second sealing device are sent out
Leakage is given birth to.
Further, the fluid leaked out can be detected, determines the type of flowed out fluid, and then according to detection
Fluid type out is which of first sealing device and the second sealing device are leaked to determine.Heat exchanger
100 can come with detection device (not shown), for detecting the fluid type leaked out.
Certainly, discharge-channel is also possible to other forms, such as can be from tube side side pipe plate 131 and shell side side pipe plate
132 surface faced each other starts the discharge orifice extended, which can be in tube side side pipe plate 131 and shell side side pipe plate 132
Extend in any one, and ultimately extends to the outside of tube side side pipe plate 131 and shell side side pipe plate 132.The extension of the discharge orifice
Direction and form can be arbitrary, as long as it is outer to ensure that the leak fluid converged in discharge orifice from link slot 161 can flow to
Portion.
The setting of the size of link slot 161 and letdown tank 162 should consider guarantee that leak fluid is smoothly discharged, and has simultaneously
Need to guarantee effective contact between tube side side pipe plate 131 and shell side side pipe plate 132, to ensure to be located at 130 two sides of tube sheet component
Tube side fluid and shell-side fluid between heat exchange efficiency.Also, for the depth of link slot 161 or letdown tank 162, need
Ensure that leak fluid can be smoothly discharged, if but depth it is excessive, will increase processing capacity, and to tube side side pipe plate 131 and shell
The thickness requirement of journey side tube sheet 132 improves, and leads to cost increase.In view of these factors, in the present invention, by link slot 161
It is set greater than 0.5mm with the width of letdown tank 162, preferably between 1-5mm, and the depth of link slot 161 and letdown tank 162
Degree is set greater than 0.5mm, preferably between 1-5mm.By the way that the size of the depth of link slot 161 and letdown tank 162 is set
It sets in above-mentioned numberical range, the flowing smoothness of leak fluid can be optimized significantly, while manufacturing cost can be controlled again
In the reasonable scope.
In addition, present inventors noted that being inserted in the heat exchanger tube 140 in the first pore 133 and the second pore 134
Have the effect for blocking the connection between link slot 161 and letdown tank 162.It is a kind of for the blocking effect for overcoming heat exchanger tube 140
Method is circumferential around the setting of the position of heat exchanger tube 140 on the surface towards shell side side pipe plate 132 of tube side side pipe plate 131
Groove.This mode will increase processing cost, and be possible to influence to correspond to tube side side swivel nut 151 in tube side side pipe plate 131
Partial intensity.
Preferably, in the present invention, the longitudinal length of the second sealing device is set smaller than the second of the second pore 134
The longitudinal length of part 1342.Diameter of section (the second sealing ring 154 in other words of the second sealing ring 154 is then shown as in Fig. 2
Height) be less than the longitudinal length of second part 1342 with the sum of the longitudinal length of shell side side swivel nut 153.In this way, being installed to
After position, the end towards tube side side pipe plate 131 of shell side side swivel nut 153 is with shell side side pipe plate 132 in face of tube side side pipe plate
Circumferential gap 163 is formed between 131 surface, which is connected to link slot 161, thus the stream for allowing to leak
Body flows downward around heat exchanger tube 140.The circumferential gap is dimensioned to be greater than or equal to 0.5mm, preferably in 0.5-3mm
Range in.The size of circumferential gap can will be also processed into while the significantly flowing smoothness of optimization leak fluid
This control is in the reasonable scope.
In addition, in the case where the second sealing device takes other structures form, in short, 163 shape of circumferential gap
At in one end towards tube side side pipe plate 131 of the second sealing device and table of the shell side side pipe plate 132 towards tube side side pipe plate 131
Between face.
In the present invention, tube sheet component 130 includes two tube sheets, i.e. tube side side pipe plate 131 and shell side side as described above
Tube sheet 132, and in assembled state, it is contacted with each other between the tube side side pipe plate 131 and shell side side pipe plate 132, to rise
To the effect supported mutually.When as a result, in the present invention, in the environment for corrosive fluid, tube side side pipe plate 131 is changed
Heat pipe 140 and tube side end socket 120 can be made of resistant material, flow through for corrosive fluid, and shell side side pipe plate 132 can be with shell
Body 110 is equally made of the high-strength material of steel etc, to provide overall structural strength for tube sheet component 130.In this way,
Even heat exchanger 100 of the invention still can bear higher operating pressure, example in the application environment of corrosive fluid
Such as, even under the corrosive fluid environment of the elevated pressures of 2MPa~10MPa, heat exchanger 100 of the invention still is able to
It works normally.
In order to reinforce shell side side pipe plate 132 to the supporting role of tube side side pipe plate 131, preferably by shell side side pipe plate 132
The major part for being arranged to the surface that they are faced each other with tube side side pipe plate 131 all contacts with each other.In other words, in addition to mentioned above
It offers except the parts of features such as the first pore 133, the second pore 134, link slot 161, letdown tank 162, screw hole 135, compared with
It is that the rest part of tube side side pipe plate 131 and shell side side pipe plate 132 all contacts with each other goodly.Also, pass through setting for nut 137
It sets, so that tube side side pipe plate 131 and shell side side pipe plate 132 closely contact, and then improves its intensity.
About the specific forming material of above-mentioned each component, heat exchanger tube 140 can preferably be made of silicon carbide (SiC), tube side
End socket 120 can be made of the resistant material of such as polytetrafluoroethylene (PTFE) etc, or can be possible to and corruption in tube side end socket 120
Polytetrafluoroethylene ethylene layer is coated on the inner surface that corrosion fluid is in contact.For tube sheet component 130, it is used to form tube side side pipe
Ceramics etc. of the material of plate 131 for example including polytetrafluoroethylene (PTFE), silicon carbide etc, or can have polytetrafluoroethyl-ne in outer layer
Alkene layer, ceramic coating etc., preferably, tube side side pipe plate 131 is made of polytetrafluoroethylene (PTFE).It is used to form shell side side pipe plate 132
Material is for example including high-strength metal materials such as stainless steel, titanium alloy, carbon steels.Swivel nut 151 material in tube side side is resistant material,
Such as polytetrafluoroethylene (PTFE).The material of shell side side swivel nut 153 is preferably the metal material with some strength, such as stainless steel, carbon
Steel etc..
Further, other than in addition to two tube sheets the case where, tube sheet component 130 of the invention may also comprise more than two
Tube sheet, this is equally within the scope of the present invention.For example, can be added again in the side towards shell 110 of shell side side pipe plate 132
One tube sheet can add a tube sheet in the side towards tube side end socket 120 of the first pore 133, and can be in tube side side
A tube sheet is added between tube sheet 131 and shell side side pipe plate 132 again.Also, it can also as described above between each tube sheet
The structures such as link slot 161 and letdown tank 162 are arranged in mode.
In addition, including seven the first pores 133 in tube side side pipe plate 131 shown in fig. 3 a, accordingly, in shell side side
It also include seven the second pores 134 on tube sheet 132.Other than the structure shown in Fig. 3 a, tube side side pipe plate 131 and shell side side pipe
Plate 132 can also respectively include the first pore 133 and the second pore 134 of other quantity and arrangement form.For example, shown in Fig. 4
Distressed structure in, 19 the first pores 133 are formed on tube side side pipe plate 131, and be arranged to include a center first
Pore 133 and two layers of first pores 133 circumferentially arranged around first pore of center 133 respectively include six the
The middle layer of one pore 133 and outer layer including 12 the first pores 133.
Correspondingly, as shown in figure 4, link slot 161 also includes inside and outside two in closed hoop (round or polygon)
Part.
In the structure shown in Fig. 1 b, shell side side pipe plate 132 is integrally formed on shell 110, to play shell simultaneously
The effect of the connecting flange of body 110.Correspondingly, tube side side pipe plate 131 also may be integrally formed on tube side end socket 120, from
And tube side cover flange 123 can be omitted.On the other hand, shell side side pipe plate 132 can also be separated with shell 110, in shell
Connecting flange is then additionally formed on 110, as described below.
<second embodiment>
Fig. 5 a and 5b show the second embodiment of the present invention.Wherein, the characteristic phase being identical with the first embodiment
As appended drawing reference indicate, and the feature being different from the first embodiment mainly described in disclosure below, without right
Identical feature is described in detail again.Unless there are opposite description, feature described in first embodiment is equally applicable to second
Embodiment.
Fig. 5 a shows the end-view of the heat exchanger 200 of the second embodiment of the present invention, and Fig. 5 b is then shown along figure
The partial sectional view that line C-C in 5a is obtained.
Identical as the heat exchanger 100 of first embodiment, heat exchanger 200 includes shell 210, tube side end socket 220 and sets
Set the tube sheet component 230 between shell 210 and tube side end socket 220.At one end that shell 210 is in contact with tube sheet component 230
It is formed with shell flange 213, for being connected with tube sheet component 230, and what tube side end socket 220 was in contact with tube sheet component 230
Tube side cover flange 223 is formed at one end, for tube side end socket 220 to be connected with tube sheet component 230.
In this way, in a second embodiment, tube sheet component 230 can be separated fully with shell 210 and 220 phase of tube side end socket,
To be conducive to carry out Maintenance and Repair to heat exchanger 200.
<3rd embodiment>
Fig. 6 and 7 shows the third embodiment of the present invention.Wherein, characteristic identical with the first and second embodiments
It is indicated with similar appended drawing reference, and mainly describes the spy different from the first and second embodiments in disclosure below
Sign, without being described in detail again to identical feature.Unless there are opposite description, feature described in the first and second embodiments
It is equally applicable to 3rd embodiment.
Fig. 6 shows the partial sectional view of the heat exchanger 300 of the third embodiment of the present invention, and Fig. 7 is then shown in Fig. 6
Part II partial enlarged view.
As shown in the enlarged view of fig. 7, the first pore 333 in tube side side pipe plate 331 is not such as first embodiment and
Counterbore form is formed in two embodiments like that, but is formed with annular groove 335 in the inner wall of the first pore 333, the annular groove
335 are dimensioned to accommodate the first sealing ring 352.As a result, in the third embodiment, first sealing device only includes
One sealing ring 352, the tube side side swivel nut in two embodiments before being omitted.
Second pore 334 of the shell side side pipe plate 332 in 3rd embodiment is still counterbore form, wherein it is close to accommodate second
Seal 354 and shell side side swivel nut 353.It is contemplated that in the third embodiment, the second pore 334 be may be alternatively formed to and the
The identical shape of one pore 333, so as to omit shell side side swivel nut 353.But, structure shown in fig. 7 be preferably as
This forms circumferential gap 163 with can be convenient on surface of the shell side side pipe plate 332 towards tube side side pipe plate 331.
Claims (14)
1. a kind of tube sheet component, the tube sheet component is used for heat exchanger, wherein the tube sheet component includes at least the first tube sheet
With the second tube sheet, at least one first pore is provided in first tube sheet, is provided at least one in second tube sheet
Second pore, first pore can be aligned with corresponding second pore, so that the heat exchanger tube energy of the heat exchanger
It is enough to be threaded through on the tube sheet component across first pore and second pore, which is characterized in that
When assembled together, the surface of first tube sheet and second tube sheet faced each other at least partly mutually connects
Touching, and, it is provided with first sealing device between first tube sheet and the heat exchanger tube, and in second tube sheet and institute
It states and is provided with the second sealing device between heat exchanger tube.
2. tube sheet component as described in claim 1, which is characterized in that first pore is counterbore, including is had smaller straight
The first part of diameter and have larger-diameter second part, be formed with platform between the first part and the second part
Rank portion, the first sealing device are arranged in first tube sheet at the second part of first pore and described change
Between heat pipe；And/or
Second pore is counterbore, including the first part with small diameter and has larger-diameter second part,
Stage portion is formed between the first part and the second part of second pore, second sealing device is in institute
It states and is arranged between second tube sheet and the heat exchanger tube at the second part of the second pore.
3. tube sheet component as claimed in claim 2, which is characterized in that the first sealing device includes: the first sealing ring, institute
It states the first sealing ring and abuts the stage portion in first pore；And first fixing piece, first fixing piece is from institute
The second part for stating the first pore is inserted between the inner wall of first pore and the outer wall of the heat exchanger tube, and by institute
It is fixed in place to state the first sealing ring；And/or
Second sealing device includes: the second sealing ring, and second sealing ring abuts described in second pore
Rank portion；And second fixing piece, second fixing piece are inserted in described second from the second part of second pore
Between the inner wall of pore and the outer wall of the heat exchanger tube, and second sealing ring is fixed in place.
4. tube sheet component as claimed in claim 3, which is characterized in that first fixing piece is the first swivel nut, wherein described
It is formed with internal screw thread in the inner wall of the second part of first pore, is formed on the outer wall of first swivel nut and institute
State the external screw thread that the internal screw thread of the second part of the first pore matches；And/or
Second fixing piece is the second swivel nut, wherein is formed in the inner wall of the second part of second pore
There is internal screw thread, the internal screw thread phase with the second part of second pore is formed on the outer wall of second swivel nut
Matched external screw thread.
5. tube sheet component as claimed in claim 3, which is characterized in that the thickness etc. of the first part of first pore
In or greater than the sealing ring thickness.
6. tube sheet component as described in claim 1, which is characterized in that set between first tube sheet and second tube sheet
There is link slot, each first pore is connected together and/or each second pore connection exists by the link slot
Together, and
It is formed with discharge-channel in first tube sheet or second tube sheet, the discharge-channel is connected with the link slot
It is logical, and lead to the outside of the tube sheet component.
7. tube sheet component as claimed in claim 6, which is characterized in that the link slot is formed in facing for first tube sheet
On the surface of second tube sheet and/or second tube sheet on the surface of first tube sheet.
8. tube sheet component as claimed in claims 6 or 7, which is characterized in that the discharge-channel is letdown tank.
9. tube sheet component as claimed in claim 8, which is characterized in that the width of the link slot and/or the letdown tank is big
In equal to 0.5mm, preferably 1-5mm；And/or
The depth of the link slot and/or the letdown tank is more than or equal to 0.5mm, preferably 1-5mm.
10. tube sheet component as claimed in claims 6 or 7, which is characterized in that in mounted state, second sealing
Device towards first tube sheet one end and second tube sheet the surface towards first tube sheet between be formed with
Circumferential gap, the circumferential gap surround the heat exchanger tube, and are connected with the link slot, the size of the circumferential gap compared with
It is greater than or equal to 0.5mm goodly, more preferably in the range of 0.5-3mm.
11. tube sheet component as claimed in claim 10, which is characterized in that in addition to being provided with first pore and described second
Except the part of pore, the link slot and the circumferential gap, first tube sheet is faced each other with second tube sheet
The rest part on surface all contact with each other.
12. tube sheet component as claimed in claim 3, which is characterized in that
Link slot is equipped between first tube sheet and second tube sheet, the link slot connects each first pore
It is logical to be connected together together and/or by each second pore, and
It is formed with discharge-channel in first tube sheet or second tube sheet, the discharge-channel is connected with the link slot
It is logical, and lead to the outside of the tube sheet component；
Wherein, in mounted state, the end back on second sealing ring of second fixing piece and described the
Circumferential gap is formed between the surface towards first tube sheet of two tube sheets, the circumferential gap surrounds the heat exchanger tube,
And be connected with the link slot, the size of the circumferential gap is preferably greater than or is equal to 0.5mm, more preferably in 0.5-3mm
Range in.
13. tube sheet component as described in claim 1, which is characterized in that it is formed with annular groove in the inner wall of first pore,
The first sealing device includes the first sealing ring, and first sealing ring is contained in the annular groove；And/or
The periphery of first tube sheet is formed at least one first screw hole, and the periphery of second tube sheet is formed at least one
Second screw hole, each first screw hole can be aligned with each second screw hole, to allow bolt to pass through, wherein described
First screw hole is counterbore, and the bolt is stretched out from the insertion of second tube sheet side and from first tube sheet side and and nut
It is threadedly engaged, the nut is accommodated in first screw hole；And/or
First tube sheet is made of resistant material, and second tube sheet is made of metal material；And/or
The heat exchanger tube is made of carbofrax material.
14. a kind of heat exchanger, the heat exchanger includes that shell, tube side end socket and setting are sealed in the shell and the tube side
The tube sheet component as described in any one of claim 1~13 between head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811323860.3A CN109269339A (en) | 2018-11-08 | 2018-11-08 | Tube sheet component and heat exchanger including the tube sheet component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811323860.3A CN109269339A (en) | 2018-11-08 | 2018-11-08 | Tube sheet component and heat exchanger including the tube sheet component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109269339A true CN109269339A (en) | 2019-01-25 |
Family
ID=65191657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811323860.3A Pending CN109269339A (en) | 2018-11-08 | 2018-11-08 | Tube sheet component and heat exchanger including the tube sheet component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109269339A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151575A (en) * | 2018-02-09 | 2018-06-12 | 无锡英罗唯森科技有限公司 | Composite tube for heat exchanger plate and the heat exchanger comprising the clad tubesheet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB504764A (en) * | 1937-12-04 | 1939-05-01 | Superheater Co Ltd | Improvements in or relating to multi-tubular heat interchangers |
| DE202004021912U1 (en) * | 2004-03-31 | 2012-11-23 | Sgl Carbon Se | Shell and tube heat exchangers |
| CN203949546U (en) * | 2014-06-29 | 2014-11-19 | 南京正源搪瓷设备制造有限公司 | A kind of double tubesheet hermetically-sealed construction silicon carbide heat exchanger |
| CN105910474A (en) * | 2016-06-29 | 2016-08-31 | 李志典 | Multi-pipe-plate heat exchanger |
| CN209978698U (en) * | 2018-11-08 | 2020-01-21 | 山东豪迈机械制造有限公司 | Tube plate assembly and heat exchanger comprising same |
-
2018
- 2018-11-08 CN CN201811323860.3A patent/CN109269339A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB504764A (en) * | 1937-12-04 | 1939-05-01 | Superheater Co Ltd | Improvements in or relating to multi-tubular heat interchangers |
| DE202004021912U1 (en) * | 2004-03-31 | 2012-11-23 | Sgl Carbon Se | Shell and tube heat exchangers |
| CN203949546U (en) * | 2014-06-29 | 2014-11-19 | 南京正源搪瓷设备制造有限公司 | A kind of double tubesheet hermetically-sealed construction silicon carbide heat exchanger |
| CN105910474A (en) * | 2016-06-29 | 2016-08-31 | 李志典 | Multi-pipe-plate heat exchanger |
| CN209978698U (en) * | 2018-11-08 | 2020-01-21 | 山东豪迈机械制造有限公司 | Tube plate assembly and heat exchanger comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151575A (en) * | 2018-02-09 | 2018-06-12 | 无锡英罗唯森科技有限公司 | Composite tube for heat exchanger plate and the heat exchanger comprising the clad tubesheet |
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