CN109945696A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN109945696A CN109945696A CN201910185457.7A CN201910185457A CN109945696A CN 109945696 A CN109945696 A CN 109945696A CN 201910185457 A CN201910185457 A CN 201910185457A CN 109945696 A CN109945696 A CN 109945696A
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- China
- Prior art keywords
- tube
- heat exchanger
- tube sheet
- shell
- pore
- Prior art date
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- 238000007789 sealing Methods 0.000 claims description 70
- 239000011148 porous material Substances 0.000 claims description 62
- 239000000463 material Substances 0.000 claims description 34
- 238000007665 sagging Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 230000003447 ipsilateral effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 description 10
- -1 polytetrafluoroethylene Polymers 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003068 static effect Effects 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of heat exchangers.Heat exchanger includes the shell being separated from each other and tube side end socket；Tube sheet, tube sheet include shell side tube sheet and tube side tube sheet, and shell side tube sheet is located at shell close to one end of tube side end socket, and tube side tube sheet is located at tube side end socket close to one end of shell, and interval is arranged and has spacing L between adjacent shell side tube sheet and tube side tube sheet.The problem of present invention efficiently solves heat exchanger tube sheet part is easy to happen leakage in the prior art.
Description
Technical field
The present invention relates to heat exchange equipment fields, in particular to a kind of heat exchanger.
Background technique
Connection type between existing pipe and plate is connected by swivel nut, and what is especially worked in corrosive fluids environment changes
The tube sheet of hot device.Since heat exchanger tube is the corrosion-resistant materials such as silicon carbide ceramics, graphite, and connecting plate needs at least two layers, due to
Pipe and connecting plate are separately machined manufactures, need to assemble use.It is needed when assembling using structures such as sealing ring, swivel nuts, but
It is the continuous corrosion because of corrosive fluid, the sealing ring of existing structure can leak in use, lead to event occur
Barrier, pollutes shell side side liquid.
Meanwhile because the heat exchanger tube of composition heat exchanger and the material of shell are different, the thermal expansion of heat exchanger tube and shell
Coefficient is different, and then in the use process of the heat exchanger of existing structure, sealing ring can be worn, and lead to sealing ring sealing function
Failure.
It can be seen from the above, the problem of heat exchanger tube sheet part is easy to happen leakage exists in the prior art.
Summary of the invention
The main purpose of the present invention is to provide a kind of heat exchangers, are easy with solving heat exchanger tube sheet part in the prior art
The problem of leaking.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of heat exchanger, comprising: be separated from each other
Shell and tube side end socket；Tube sheet, tube sheet include shell side tube sheet and tube side tube sheet, and shell side tube sheet is located at shell close to tube side end socket
One end, tube side tube sheet is located at tube side end socket and is spaced close to one end of shell, and between adjacent shell side tube sheet and tube side tube sheet
It is arranged and there is spacing L.
Further, tube side end socket is two, and two tube side end sockets are separately positioned on the both ends of shell, and each tube side end socket
On be provided with tube side tube sheet, the both ends of shell are provided with shell side tube sheet.
Further, spacing L, which is greater than, changes difference according to the calculated length of thermal expansion coefficient of heat exchanger tube and shell；
And/or spacing L is greater than heat exchanger tube in the process between the first pore of shell side tube sheet and the second pore of tube side tube sheet
The sum of the amount of deflection generated when flexible deformation occurs for the deviation and heat exchanger tube of generation.
Further, heat exchanger further includes multiple sealing devices, the heat exchanger tube and shell side tube sheet and/or tube side pipe of heat exchanger
The junction of plate is provided with sealing device.
Further, the hole wall of the first pore has the first pore reaming section for holding in the side close to tube side tube sheet
Receive sealing device；And/or second the hole wall of pore have the second pore reaming section with for holding in the side far from shell side tube sheet
Receive sealing device.
Further, sealing device includes sealing ring and fixing piece, and sealing ring setting is in the first pore reaming section and/or the
In two pore reaming sections；At least part of fixing piece protrudes into the first pore reaming section and/or the second pore reaming section with pressure
Close seal.
Further, the first pore reaming section and/or the second pore reaming section are two-part pore structure, and two-part hole
Structure includes first segment and second segment, and first segment relative to second segment close to the center of shell, and the aperture of first segment is less than
The aperture of second segment, sealing ring are located in first segment, and at least part of fixing piece protrudes into first segment to compress sealing ring.
Further, fixing piece is swivel nut.
Further, circumferential direction of the swivel nut close to one end of sealing ring has non-threaded section, and first segment is corresponding with non-threaded section
Hole wall be smooth surface, and non-threaded section length be more than or equal to 0.5mm and be less than or equal to 5mm.
Further, tube sheet includes at least one sagging plate, and shell side tube sheet and/or tube side tube sheet are close to the center of shell
Side be provided with sagging plate.
Further, the material of sagging plate is different from the material of shell side tube sheet and/or tube side tube sheet.
Further, the sagging plate between ipsilateral shell side tube sheet and tube side tube sheet to the shell side tube sheet ipsilateral with it
Between distance be L2, L2, which is greater than, changes difference according to the heat exchanger tube of heat exchanger and the calculated length of the thermal expansion coefficient of shell；
And/or L2 is greater than heat exchanger tube and generates in the process between the first pore of shell side tube sheet and the second pore of tube side tube sheet
Deviation and heat exchanger tube the sum of the amount of deflection that generates when flexible deformation occurs.
Further, sagging plate is made of metal material.
Further, heat exchanger further include: anticreep position-limit mechanism, anticreep position-limit mechanism have coupler construction, coupler construction
It being connected on tube side tube sheet or is connected on the sagging plate of tube side tube sheet, coupler construction is stretched out towards shell side tube sheet, with
Prevent tube side tube sheet from skidding off from heat exchanger tube；Protrusion, protrusion are fixed on the outer peripheral surface of shell side tube sheet, and clamping section can block with protrusion
Connect cooperation.
Further, the material of the heat exchanger tube is silicon carbide material.
It applies the technical scheme of the present invention, the heat exchanger in the application includes the shell being separated from each other and tube side end socket；Pipe
Plate includes shell side tube sheet and tube side tube sheet, and shell side tube sheet is located at shell close to one end of tube side end socket, and tube side tube sheet is located at tube side
Close to one end of shell, and between adjacent shell side tube sheet and tube side tube sheet, interval is arranged and has spacing L end socket.
Using above structure heat exchanger when, the heat exchanger tube in heat exchanger can pass through shell side tube sheet and tube side tube sheet respectively
It is fixed.Due to interval setting between adjacent shell side tube sheet and tube side tube sheet and there is spacing L, it is possible to effectively prevent
The damage of the sealing device for heat exchanger only generated because heat exchanger tube is different with the thermal expansion coefficient of shell, and pipe can also be prevented
Journey liquid is leaked by heat exchanger tube sheet, to pollute to shell side medium.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the heat exchanger of a specific embodiment according to the present invention；
Fig. 2 shows the side views in the direction A-A of the heat exchanger in Fig. 1；
Fig. 3 shows the structural schematic diagram when heat exchanger in Fig. 1 adds sagging plate；
Fig. 4 shows the structural schematic diagram when heat exchanger in Fig. 3 adds disconnecting prevention structure and protrusion；
Wherein, the above drawings include the following reference numerals:
10, heat exchanger；11, shell；12, tube side end socket；20, tube sheet；21, shell side tube sheet；211, the first pore；212,
One pore reaming section；22, tube side tube sheet；221, the second pore；222, the second pore reaming section；23, sagging plate；30, it seals
Device；31, sealing ring；32, fixing piece；40, anticreep position-limit mechanism；50, raised；60, heat exchanger tube.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have and the application
The normally understood identical meanings of person of an ordinary skill in the technical field.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings, or for component itself is on vertical, vertical or gravity direction；Equally
Ground for ease of understanding and describes, and " inside and outside " refers to the inside and outside of the profile relative to each component itself, but the above-mentioned noun of locality is not
For limiting the present invention.
Tube side, refer to medium flow through the channel in heat exchanger tube and with its part that connects.
Shell side, refer to medium flow through the channel outside heat exchanger tube and with its part that connects.
In order to solve the problems, such as that heat exchanger tube sheet part is easy to happen leakage in the prior art, this application provides one kind to change
Hot device.
As shown in Figure 1, heat exchanger 10 includes shell 11 (or alternatively referred to as cylinder), tube side end socket 12 and is located at shell 11
Tube sheet between tube side end socket 12.
Shell side adapter tube is provided on shell 11, which takes over one end and be connected on shell 11, optionally set on the other end
It is equipped with shell side pipe connecting flange, for being connected with external pipeline.Shell-side fluid can take over via shell side and flow into shell 11
Portion.
It is provided with tube side adapter tube on tube side end socket 12, is similar to shell side and takes over, tube side takes over one end and is connected to tube side end socket
12, the other end is optionally provided with tube side pipe connecting flange, for being connected with external pipeline.Tube side fluid can be via the pipe
Journey adapter tube is flowed into tube side end socket 12, and then is flowed into the heat exchanger tube 60 being fixed on tube sheet.As shown in Figures 1 to 4, this Shen
Please in the heat exchanger shell 11 and tube side end socket 12 that are separated from each other；Tube sheet 20 includes shell side tube sheet 21 and tube side tube sheet 22, shell
Journey tube sheet 21 is located at shell 11 close to one end of tube side end socket 12, and tube side tube sheet 22 is located at tube side end socket 12 close to the one of shell 11
End, and interval is arranged and has spacing L between adjacent shell side tube sheet 21 and tube side tube sheet 22.
It should be noted that Fig. 1 illustrates only the partial sectional view of the one end (right side) of heat exchanger 10, heat exchanger 10
It further include the part in the left side of figure, that is, the pipe of same structure is also connected on the end of shell 11 being located on the left of in Fig. 1
Plate and tube side end socket.
It is formed with tube side cover flange on that one end that tube side end socket is in contact with tube side tube sheet 22, the tube side end socket method
The screw hole that can be aligned with screw hole is also formed on orchid, bolt may pass through the screw hole, so that tube sheet is connected with tube side end socket.
As shown in Figure 1, nut is connected on one end of the close tube side end socket of bolt, to realize final fixation.
Be formed on tube side tube sheet 22 at least one, preferably a plurality of second pore 221, and formed on shell side tube sheet 21
Have at least one, preferably a plurality of first pore 211, wherein each first pore 211 is corresponding with the second pore 221 respectively, example
Quantity such as the first pore 211 is identical as the quantity of the second pore 221, and during installation, corresponding first pore 211 and second
Pore 221 is aligned with each other, to allow heat exchanger tube 60 to pass through and be fixed in the first pore 211 and the second pore 221.Have
In the case where multiple first pores 211 and the second pore 221, heat exchanger 10 accordingly also includes multiple heat exchanger tubes 60.Using upper
When stating the heat exchanger of structure, the heat exchanger tube 60 in heat exchanger can be consolidated by shell side tube sheet 21 and tube side tube sheet 22 respectively
It is fixed.Due to interval setting between adjacent shell side tube sheet 21 and tube side tube sheet 22 and there is spacing L, it is possible to be effectively prevented
The damage of bring sealing device for heat exchanger 30 due to heat exchanger tube 60 is different with the thermal expansion coefficient of shell 11, and can also prevent
Only tube side liquid is leaked by heat exchanger tube sheet 20, to pollute to shell side medium.
It should be noted that under normal circumstances, using when heat exchanger by the horizontal setting of heat exchanger；However, it is also possible to
By the vertical setting of heat exchanger, but need to increase counterweight to balance the weight of bobbin carriage.
And it is further desired that illustrating, the material of the heat exchanger tube 60 in heat exchanger in the application can make corrosion-resistant material
Material.Specifically, heat exchanger tube 60 can be silicon carbide heat exchanger tube.
Specifically, tube side end socket 12 is two, and two tube side end sockets 12 are separately positioned on the both ends of shell 11, and each tube side
Tube side tube sheet 22 is provided on end socket 12, the both ends of shell 11 are provided with shell side tube sheet 21.It is arranged in this way, it can be right
The two sides of shell 11 are protected, and the heat transferring medium that can be effectively prevented in tube side end socket 12 passes through the pipe of 11 two sides of shell
Plate 20 occurs to leak and pollutes shell side heat transferring medium.
Optionally, shell side tube sheet 21 can be fixedly connected with shell 11, i.e., shell side tube sheet 21 can be welded into shell 11
Type.Can also be by the way that flange be arranged on shell 11,21 radial outside of shell side tube sheet is evenly equipped with bolt hole, by bolt by shell side
Tube sheet 21 is fixedly connected with flange.
Specifically, spacing L, which is greater than, changes difference according to the calculated length of thermal expansion coefficient of heat exchanger tube 60 and shell 11；
Specifically, spacing L is greater than heat exchanger tube 60 in the first pore 211 of shell side tube sheet 21 and the second pipe of tube side tube sheet 22
The sum of the amount of deflection generated when flexible deformation occurs for the deviation and heat exchanger tube 60 generated in the process between hole 221.This is scratched
Degree can be calculated according to data such as the length of the elasticity modulus of heat exchanger tube, heat exchanger tube.
In actual design production process, the spacing L value between shell side tube sheet 21 and tube side tube sheet 22 be should not be too large, if
It is excessive, the overall structural strength decline of heat exchanger tube 60 and heat exchanger can be wasted；But it is too small, do not have desired buffer function.
Preferably, the tube sheet 20 at heat exchanger both ends is spaced setting.The variation of heat exchanger tube length is transmitted towards both ends, both ends all between
Every setting, it can be avoided both ends and appear at sealing effect reduction in heat exchanging process or generate stress on heat exchanger tube 60 and lead
Cause the risk of heat exchange tracheal rupture.
Specifically, heat exchanger further includes multiple sealing devices 30, heat exchanger tube 60 and shell side tube sheet 21 and/or tube side tube sheet 22
Junction be provided with sealing device 30.It is arranged in this way, can prevents shell side medium or tube side medium from passing through heat exchanger tube
60 with the junction of shell side tube sheet 21 or tube side tube sheet 22 to outward leakage.
Specifically, the hole wall of the first pore 211 close to tube side tube sheet 22 side have the first pore reaming section 212 with
For accommodating sealing device 30；And/or second pore 221 hole wall far from shell side tube sheet 21 side have the second pore expansion
Hole section 222 is for accommodating sealing device 30.It is arranged in this way, the setting of sealing device 30 can be made in reaming section, without
The space of heat exchanger tube 60 is occupied when installing sealing device 30, and then can be reduced sealing device 30 and be exchanged squeezing for the generation of heat pipe 60
Pressure guarantees that heat exchanger tube 60 has longer service life, while it is good to can also ensure that shell side tube sheet 21 and tube side tube sheet 22 have
Good sealing performance.
Specifically, sealing device 30 includes sealing ring 31 and fixing piece 32.Sealing ring 31 is arranged in the first pore reaming section
212 and/or second in pore reaming section 222；At least part of fixing piece 32 protrudes into the first pore reaming section 212 and/or
To compress sealing ring 31 in two pore reaming sections 222.In this way, can be by using sealing ring 31 to shell side tube sheet 21 and pipe
Journey tube sheet 22 is sealed, and sealing element is fixed by using fixing piece 32, is adjacent to sealing ring 31 in heat exchanger tube 60
On outer wall, to enhance the sealing performance of sealing ring 31, and prevent from taking off out of reaming section due to long-time using rear sealing ring 31
It falls.
Optionally, sealing ring 31 can be O-ring.
It should be noted that on shell side tube sheet 21 in first pore 211 reaming section bottom to the bottom surface of shell side tube sheet 21
The bottom surface distance of bottom to the tube side tube sheet 22 of reaming section should be greater than being equal in second pore 221 in distance and tube side tube sheet 22
The diameter of sealing ring 31 to guarantee the bonding strength of shell side tube sheet 21 and tube side tube sheet 22, while can also save material.
Specifically, the first pore reaming section 212 and/or the second pore reaming section 222 are two-part pore structure, and two sections
Formula pore structure includes first segment and second segment, and first segment relative to second segment close to the center of shell 11, and the hole of first segment
Diameter is less than the aperture of second segment, and sealing ring 31 is located in first segment, and at least part of fixing piece 32 protrude into first segment it is interior with
Compress sealing ring 31.It is arranged in this way, can be provided between fixing piece 32 and sealing ring 31 and squeeze space, make fixing piece 32
Sealing ring 31 can be squeezed with more efficient, be further ensured that the sealing performance of sealing device 30.
Specifically, fixing piece 32 is swivel nut.It is of course also possible to by fixing piece 32 be set as other structures to sealing ring 31 into
Row is fixed.
When selecting swivel nut as fixing piece 32, in the inner wall of reaming section need that the screw thread matched with swivel nut is arranged, from
And guaranteeing swivel nut can be fixed on inside reaming section strongerly.
Optionally, circumferential direction of the swivel nut close to one end of sealing ring 31 has non-threaded section, and first segment is corresponding with non-threaded section
Hole wall it is also non-threaded, and non-threaded section length be more than or equal to 0.5mm and be less than or equal to 5mm.It is arranged in this way, can keeps away
Exempt from fixing piece 32 when squeezing sealing ring 31, the axial screw thread of fixing piece 32 causes to wear to sealing ring 31, to protect
Demonstrate,prove the service life of fixing piece 32.
Specifically, there is gap, gap can be mentioned in 60 expanded by heating of heat exchanger tube between fixing piece 32 and heat exchanger tube 60
For expansion space.It is arranged in this way, in 60 expanded by heating of heat exchanger tube, it is ensured that heat exchanger tube 60 can be in radial directions
It stretches.It can prevent because shell 11 is different with the thermal expansion coefficient of heat exchanger tube 60, and leads to the sealing of sealing device 30
Effect reduces or the rupture of the heat exchanger tube 60 as caused by local stress peaks of heat exchanger tube 60.
Optionally, tube sheet 20 includes at least one sagging plate 23, and shell side tube sheet 21 and/or tube side tube sheet 22 are close to shell
The side at 11 center is provided with sagging plate 23, the material and shell side tube sheet 21 of sagging plate 23 and/or tube side tube sheet 22
Material is different.
As shown in figure 3, the sagging plate 23 between ipsilateral shell side tube sheet 21 and tube side tube sheet 22 arrives the shell ipsilateral with it
The distance between journey tube sheet 21 is L2, and L2 is greater than calculated according to the heat exchanger tube 60 of heat exchanger and the thermal expansion coefficient of shell 11
Length changes difference；And/or L2 is greater than heat exchanger tube 60 in the first pore 211 of shell side tube sheet 21 and the second pipe of tube side tube sheet 22
The sum of the amount of deflection generated when flexible deformation occurs for the deviation and heat exchanger tube 60 generated in the process between hole 221.
About the specific forming material of above-mentioned each component, heat exchanger tube 60 can preferably be made of silicon carbide (SiC), tube side envelope
First 12 can be made of the resistant material of such as polytetrafluoroethylene (PTFE) etc, or can be in tube side end socket 12 it is possible that and corrosivity
Polytetrafluoroethylene ethylene layer is coated on the inner surface that fluid is in contact.For tube sheet component, it is used to form the material of tube side side pipe plate
Expect the ceramics etc. for example including polytetrafluoroethylene (PTFE), silicon carbide etc, or can have polytetrafluoroethylene ethylene layer, ceramics in outer layer
Coating etc., preferably, tube side side pipe plate is made of polytetrafluoroethylene (PTFE).The material of shell side side pipe plate is used to form for example including stainless
The high-strength metal materials such as steel, titanium alloy, carbon steel.Tube side side swivel nut material is resistant material, such as polytetrafluoroethylene (PTFE).Shell side
The material of side swivel nut preferably has metal material, such as stainless steel, carbon steel of some strength etc..
Optionally, sagging plate 23 is made of metal material.
Certainly, it when sagging plate 23 is arranged close to the side at the center of shell 11 in tube side tube sheet 22, can be selected corrosion-resistant
Making material of the material as tube side tube sheet 22, and production material of the higher metal material of selection intensity as sagging plate 23
Material；And when sagging plate 23 is arranged close to the side at the center of shell 11 in shell side tube sheet 21, resistant material conduct can be selected
The making material of sagging plate 23, and making material of the higher metal material of selection intensity as shell side tube sheet 21.
In this application, the center of shell 11 being equidistant to 11 left and right sides of shell.Optionally, the center of shell 11
It can be plane perpendicular to heat exchanger tube 60 and parallel with tube side tube sheet 22.
Heat exchanger further includes anticreep position-limit mechanism 40 and protrusion 50.Anticreep position-limit mechanism 40 has coupler construction, hook knot
Structure is connected on tube side tube sheet 22 or is connected on the sagging plate 23 close to tube side tube sheet 22, coupler construction and towards shell side pipe
Plate 21 stretches out, to prevent tube side tube sheet 22 from skidding off from heat exchanger tube 60.
As shown in figure 4, there is coupler construction clamping section and fixed section, fixed section to be connected on tube side tube sheet 22, or fixed
Section is connected on the sagging plate 23 of tube sheet 20, and clamping section is stretched out towards shell side tube sheet 21, and the length L1 for being clamped section is greater than spacing
L；Protrusion 50 is fixed on the outer peripheral surface of shell side tube sheet 21, and clamping section can be engaged by clamping with protrusion 50.It is arranged in this way, anti-
After de- position-limit mechanism 40 and protrusion 50 are cooperated, tube side tube sheet 22 can be effectively prevented and fallen off from heat exchanger tube 60, guaranteed
Stability when heat exchanger works.Optionally, corrosion resistant material can be polytetrafluoroethylene (PTFE), ceramics or have polytetrafluoroethyl-ne
The material of alkene layer, ceramic layer.
It may also be noted that being also provided with tube side end socket, and tube side end socket and pipe in the outside of tube side tube sheet 22
Bolt hole has can be set in the axially external of journey tube sheet 22, and is additionally provided with bolt and is threaded through in bolt hole.
In this application, since heat exchanger tube 60 can be carborundum tube, the variable quantity of its length is extremely unknown when temperature change
It is aobvious, it can be understood as length is fixed.And heat exchanger shell 11 is generally metal material, when temperature change the variable quantity of length compared with
Greatly.It is close after multiple sliding friction which results in there is opposite sliding frictions at 60 sealing of heat exchanger tube of traditional heat exchangers
Seal 31 is worn, seal failure.And by setting spacing L, sealing device 30 and reaming section, efficiently solve the mill of sealing ring 31
The problem of damage.
This structure has used shell side tube sheet 21 and tube side tube sheet 22, realizes the sealing of shell side and tube side, shell side tube sheet respectively
There are a hanging isolated areas between 21 and tube side tube sheet 22.When work, influenced by uneven shell-side temperature variation, shell 11 can occur
The variation of length, so that the distance between the shell side tube sheet 21 at 11 both ends of shell can also change, the change of 21 distance of shell side tube sheet
Change can be suspended isolated area absorption, without will affect the position of tube side tube sheet 22, to ensure that heat exchanger tube 60 and tube side tube sheet
It for opposite sliding friction will not occur between 22, i.e., is static seal between heat exchanger tube 60 and tube side tube sheet 22.Avoid sealing ring
31 wear-out failure in use.
It is static seal between heat exchanger tube 60 and tube side tube sheet 22, improves the reliability of tube side sealing, be suitable for tube side
The occasion of important sealing.The material of heat exchanger tube 60 is silicon carbide material.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
1, efficiently solve the problems, such as that heat transferring medium leaks in heat exchanger；
2, it is impaired to solve the problems, such as that sealing device is easy；
3, heat exchanger structure is simple, easy to accomplish.
Obviously, above-mentioned the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments should fall within the scope of the present invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of heat exchanger characterized by comprising
The shell (11) and tube side end socket (12) being separated from each other；
Tube sheet (20), the tube sheet (20) include shell side tube sheet (21) and tube side tube sheet (22), and the shell side tube sheet (21) is located at
The shell (11) is located at the tube side end socket (12) and leans on close to one end of the tube side end socket (12), the tube side tube sheet (22)
One end of the nearly shell (11), and between the adjacent shell side tube sheet (21) and the tube side tube sheet (22) interval be arranged and
With spacing L.
2. heat exchanger according to claim 1, which is characterized in that the tube side end socket (12) is two, two pipes
Journey end socket (12) is separately positioned on the both ends of the shell (11), and is provided with the tube side on each tube side end socket (12)
Tube sheet (22), the both ends of the shell (11) are provided with the shell side tube sheet (21).
3. heat exchanger according to claim 1, which is characterized in that
The spacing L is greater than the calculated length difference in change of thermal expansion coefficient according to heat exchanger tube (60) and the shell (11)
Value；And/or
The spacing L is greater than the heat exchanger tube (60) in the first pore (211) and the tube side pipe of the shell side tube sheet (21)
Flexible deformation occurs for the deviation generated in the process between the second pore (221) of plate (22) and the heat exchanger tube (60)
When the sum of the amount of deflection that generates.
4. heat exchanger according to claim 1, which is characterized in that the heat exchanger further includes multiple sealing devices (30),
The setting of the junction of the heat exchanger tube (60) of the heat exchanger and the shell side tube sheet (21) and/or the tube side tube sheet (22) is
State sealing device (30).
5. heat exchanger according to claim 4, which is characterized in that
The hole wall of first pore (211) close to the tube side tube sheet (22) side have the first pore reaming section (212) with
For accommodating the sealing device (30)；And/or second pore (221) hole wall far from the shell side tube sheet (21) side
With the second pore reaming section (222) for accommodating the sealing device (30)；
Preferably, the sealing device (30) includes sealing ring (31) and fixing piece (32), and the sealing ring (31) is arranged in institute
It states in the first pore reaming section (212) and/or the second pore reaming section (222), at least one of the fixing piece (32)
Divide and protrudes into the first pore reaming section (212) and/or the second pore reaming section (222) to compress the sealing ring
(31)；
Preferably, the first pore reaming section (212) and/or the second pore reaming section (222) are two-part hole knot
Structure, and the two-part pore structure includes first segment and second segment, and the first segment is close described relative to the second segment
The center of shell (11), and the aperture of the first segment is less than the aperture of the second segment, the sealing ring (31) is located at described
In first segment, and at least part of the fixing piece (32) protrudes into the first segment to compress the sealing ring (31)；
Preferably, the fixing piece (32) is swivel nut；
Preferably, circumferential direction of the swivel nut close to one end of the sealing ring (31) has non-threaded section, the first segment and institute
Stating non-threaded section of corresponding hole wall is smooth surface, and non-threaded section of the length is more than or equal to 0.5mm and is less than or equal to
5mm。
6. heat exchanger according to any one of claim 1 to 5, which is characterized in that the tube sheet (20) includes at least one
The center of a sagging plate (23), the shell side tube sheet (21) and/or the tube side tube sheet (22) close the shell (11)
Side is provided with the sagging plate (23).
7. heat exchanger according to claim 6, which is characterized in that the material of the sagging plate (23) and the shell side pipe
The material of plate (21) and/or the tube side tube sheet (22) is different.
8. heat exchanger according to claim 6, which is characterized in that the ipsilateral shell side tube sheet (21) and the tube side pipe
It is L2 that the sagging plate (23) between plate (22), which arrives the distance between described shell side tube sheet (21) ipsilateral with it, and L2 is greater than
Change difference according to the calculated length of the thermal expansion coefficient of the heat exchanger tube (60) of the heat exchanger and the shell (11)；With/
Or L2 be greater than the heat exchanger tube (60) the shell side tube sheet (21) the first pore (211) and the tube side tube sheet (22) the
What the deviation generated in the process between two pores (221) generated when flexible deformation occurs with the heat exchanger tube (60) scratches
The sum of degree.
9. heat exchanger according to claim 6, which is characterized in that the sagging plate (23) is made of metal material.
10. heat exchanger according to any one of claim 1 to 9, which is characterized in that the heat exchanger further include:
Anticreep position-limit mechanism (40), the anticreep position-limit mechanism (40) have coupler construction, and the coupler construction is connected to described
On tube side tube sheet (22) or it is connected on the sagging plate (23) of the heat exchanger of the tube side tube sheet (22), the card
Hooking structure is stretched out towards the shell side tube sheet (21), to prevent heat exchanger tube (60) of the tube side tube sheet (22) from the heat exchanger
On skid off；
Raised (50), the protrusion (50) are fixed on the outer peripheral surface of the shell side tube sheet (21), and the coupler construction can be with institute
Raised (50) are stated to be engaged by clamping；
Preferably, the material of the heat exchanger tube (60) is silicon carbide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910185457.7A CN109945696A (en) | 2019-03-12 | 2019-03-12 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910185457.7A CN109945696A (en) | 2019-03-12 | 2019-03-12 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109945696A true CN109945696A (en) | 2019-06-28 |
Family
ID=67008720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910185457.7A Pending CN109945696A (en) | 2019-03-12 | 2019-03-12 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109945696A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678363A (en) * | 2020-07-10 | 2020-09-18 | 贵州兰鑫石墨机电设备制造有限公司 | Double-tube-plate silicon carbide heat exchanger with single-plate double-seal structure |
| CN115014096A (en) * | 2022-08-08 | 2022-09-06 | 南通好通科技有限公司 | Automatic integrated graphite heat exchanger that leakproofness is strong |
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| CN102338572A (en) * | 2010-07-26 | 2012-02-01 | 济南西斯普换热系统有限公司 | Sterile dual-tubeplate shell-and-tube heat exchanger |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678363A (en) * | 2020-07-10 | 2020-09-18 | 贵州兰鑫石墨机电设备制造有限公司 | Double-tube-plate silicon carbide heat exchanger with single-plate double-seal structure |
| CN115014096A (en) * | 2022-08-08 | 2022-09-06 | 南通好通科技有限公司 | Automatic integrated graphite heat exchanger that leakproofness is strong |
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