CN110174018B - Double-effect heat exchange system capable of reducing cold and hot impact - Google Patents
Double-effect heat exchange system capable of reducing cold and hot impact Download PDFInfo
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- CN110174018B CN110174018B CN201910277505.5A CN201910277505A CN110174018B CN 110174018 B CN110174018 B CN 110174018B CN 201910277505 A CN201910277505 A CN 201910277505A CN 110174018 B CN110174018 B CN 110174018B
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- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 54
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000035939 shock Effects 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 51
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 239000011248 coating agent Substances 0.000 claims description 32
- 238000000576 coating method Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 15
- 230000001788 irregular Effects 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims 2
- 238000005536 corrosion prevention Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 11
- 210000003298 dental enamel Anatomy 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 239000002320 enamel (paints) Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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- 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
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
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- 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
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/14—Fastening; Joining by using form fitting connection, e.g. with tongue and groove
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/20—Fastening; Joining with threaded elements
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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
The invention discloses a double-effect heat exchange system capable of reducing cold and heat shock, which comprises a silicon carbide heat exchanger, a heat exchange part and a heat source station, wherein the silicon carbide heat exchanger comprises a pipe body, an end sealing device, a silicon carbide pipe and a pipe cover, the silicon carbide pipe is arranged in the pipe body and is connected with the pipe cover through the end sealing device, and the heat exchange part is communicated with the silicon carbide heat exchanger and the heat source station. The invention has the advantages of reducing cold and hot impact, high structural strength, good corrosion prevention effect, monitoring medium leakage in time, convenient maintenance and replacement, good sealing effect, reducing workload and long service life.
Description
Technical Field
The invention relates to the field of chemical mechanical equipment, in particular to a double-effect heat exchange system capable of reducing cold and hot shock.
Background
The silicon carbide heat exchanger is a novel heat exchanger which uses silicon carbide ceramic material as heat transfer medium. The silicon carbide ceramic has the excellent characteristics of corrosion resistance, high temperature resistance, high thermal conductivity, high hardness, wear resistance and the like. The material has excellent performances of high temperature resistance and thermal shock resistance, and cracks do not appear after the air cooling is carried out for more than 50 times from 1000 ℃ to room temperature; the heat conductivity coefficient is equal to that of stainless steel; has good corrosion resistance in oxidizing and acidic media. Therefore, the core of the technology on the silicon carbide heat exchanger lies in how to solve the problems of corrosion prevention, strength improvement and sealing of the tube plate, and two solutions are generally provided for solving the problem of corrosion prevention of the tube plate, namely, enamel is carried out on the metal tube plate to realize corrosion prevention; and secondly, realizing corrosion prevention by using a tetrafluoro tube plate. The enamel process on the metal tube plate is complex, and the enamel explosion can occur when the treatment is not good, so that the whole tube plate is scrapped; the PTFE tube plate has high price, and the strength of the PTFE tube plate is reduced after the PTFE tube plate is heated and pressurized, so that the sealing problem is easily caused.
Because the cold and hot alternate use of heat exchanger leads to the ageing of sealing element to cause revealing of medium easily among the prior art, adopt enamel coating in the body inside of heat exchanger simultaneously, do not use the high temperature once for a long time or the temperature is low excessively can lead to the fact the impact to enamel coating, lead to peeling off of enamel coating easily, influence life.
In addition, in the prior art, a fixed pressing mode is generally adopted for pressing a sealing element on a silicon carbide pipe, but the pressing mode is heated and cooled for many times, the sealing material is aged, gaps are formed, and leakage of media is caused. Meanwhile, the whole medium is sealed, so that leakage cannot be found in time even if the leakage occurs.
And because leakage only occurs on individual silicon carbide tubes, the prior art can find that all the ends of the silicon carbide tubes have media after the leakage occurs because the two tube plates are attached together, and cannot know that the leakage occurs on the specific silicon carbide tube, so that the sealing parts of all the silicon carbide ends need to be replaced, and the workload is high.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a heat exchange system which has the advantages of reducing cold and hot shock, high structural strength, good corrosion prevention effect, timely monitoring of medium leakage, convenience in maintenance and replacement, good sealing effect, workload reduction, long service life and capability of reducing cold and hot shock.
According to one aspect of the invention, a double-effect heat exchange system capable of reducing cold and heat shock is provided, which comprises a silicon carbide heat exchanger, a heat exchange part and a heat source station, wherein the silicon carbide heat exchanger comprises a tube body, an end sealing device, a silicon carbide tube and a tube cover, the silicon carbide tube is arranged in the tube body, the silicon carbide tube is connected with the tube cover through the end sealing device, the heat exchange part comprises a first liquid inlet tube, a second liquid inlet tube, a sleeve, a first liquid outlet tube, a second liquid outlet tube, a first connecting tube, a second connecting tube and a third connecting tube, the sleeve is coated outside the tube body, the first liquid inlet tube is communicated with the interior of the sleeve, the second liquid inlet tube is communicated with the interior of the tube body, the first liquid inlet tube is communicated with the interior of the sleeve, the second liquid outlet tube is communicated with the interior of the tube body, the second connecting tube is communicated with the first liquid outlet tube and the second liquid outlet tube, and the third connecting tube is communicated with the first liquid, the first liquid inlet pipe is provided with a first valve and a second valve, the first connecting pipe is provided with a third valve, the first liquid outlet pipe is provided with a fourth valve, the third connecting pipe is provided with a fifth valve, and the first connecting pipe is arranged between the first valve and the second valve.
In some embodiments, the end sealing device includes a first steel lining plate, a second steel lining plate, a support plate, a sealing portion and a leakage detection portion, the support plate is disposed between the first steel lining plate and the second steel lining plate, the leakage detection portion is disposed on the support plate, the leakage detection portion includes a protrusion disposed on an edge of the support plate contacting with the first steel lining plate, and a gap is formed between the protrusion and the first steel lining plate, a detection pipeline is disposed on the top of the support plate, one end of the detection pipeline communicates with the gap, the other end of the detection pipeline is connected with a pressure gauge, a liquid discharge portion is disposed at the bottom of the support plate, and the sealing portion includes a first sealing portion disposed between the first steel lining plate and the silicon carbide pipe and a second sealing portion disposed between the second steel lining plate and the silicon carbide pipe.
In some embodiments, the first steel lining plate comprises a steel lining and a tetrafluoro coating, the steel lining comprises a contact part and a fixing part, the fixing part is arranged around the contact part, a plurality of fixing holes are regularly distributed on the fixing part, a plurality of mounting holes are regularly arranged on the contact part, the tetrafluoro coating is coated on the outer sides of the contact part and the mounting holes, a first fixing part is arranged between the contact part and the tetrafluoro coating, and a second fixing part is arranged between the mounting holes and the tetrafluoro coating.
In some embodiments, the first fixing member is provided with at least one groove, and the first fixing member is a groove in which the width of the notch provided on the contact portion is smaller than the width of the groove bottom.
In some embodiments, the first fixing member is preferably a T-shaped groove provided on the contact portion.
In some embodiments, the first fixing member is preferably a dovetail groove provided on the contact portion.
In some embodiments, the second fixing member is a regular and/or irregular protrusion disposed radially along the mounting hole.
In some embodiments, the second fixing member is preferably provided with an isosceles trapezoid projection along the radial direction of the mounting hole.
In some embodiments, the second fixing member is preferably provided with an isosceles triangle protrusion along the radial direction of the mounting hole.
In some embodiments, the first steel lining pipe plate and the second steel lining pipe plate are identical in structure, the first sealing portion comprises a tetrafluoro gasket, an O-shaped ring, a tetrafluoro gasket, soft tetrafluoro filler, an O-shaped ring and a first end socket which are sequentially arranged in a direction away from the supporting plate, the first end socket abuts against the supporting plate, the second sealing portion comprises a tetrafluoro gasket, an O-shaped ring, a tetrafluoro gasket, soft tetrafluoro filler, an O-shaped ring and a second end socket which are sequentially arranged in a direction close to the supporting plate, and the second end socket is in threaded connection with the second steel lining pipe plate.
The silicon carbide heat exchanger can be uniformly heated outside or inside the silicon carbide heat exchanger simultaneously or respectively by utilizing the heat exchanging part, so that the silicon carbide heat exchanger is kept at a preset temperature, the heat exchanging effect is better, cold and hot impact on an enamel layer in a tube body is avoided, the service life is prolonged by preventing a sealing element from aging, and the combination of the metal tube plate and the tetrafluoro coating not only ensures the structural strength of the tube plate, but also ensures the corrosion resistance; the adhesion between the polytetrafluoroethylene coating and the metal tube plate is enhanced by arranging the first fixing piece and the second fixing piece, the polytetrafluoroethylene coating is prevented from being peeled off, a gap is formed between the support plate and the first steel lining plate and communicated with the pressure gauge, and the condition of medium leakage can be timely found out when the pressure in the gap and the original pressure change under the condition of medium leakage; because the tube plates in the prior art are attached together, if the end parts of all the silicon carbide tubes are stained with media, the specific sealing leakage of which silicon carbide tube or which silicon carbide tubes can not be found in time, so that the silicon carbide tubes are required to be replaced completely, the specific leakage silicon carbide tubes can be found after gaps exist, the replacement and maintenance efficiency is improved, and the workload is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a double-effect heat exchange system capable of reducing cold and heat shock of the invention;
FIG. 2 is a schematic structural diagram of a silicon carbide heat exchanger of the double-effect heat exchange system capable of reducing cold and heat shock according to the invention;
FIG. 3 is a cross-sectional view of a silicon carbide heat exchanger of the dual effect and heat exchange system of the present invention to reduce cold and heat shock;
FIG. 4 is a schematic structural diagram of a first steel liner plate of the double-effect heat exchange system capable of reducing cold and heat shock according to the invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic view of another embodiment of the first stationary member of the dual effect heat exchange system with reduced cold and heat shock of the present invention;
fig. 8 is a partial enlarged view of B in fig. 6;
FIG. 9 is a schematic view of another embodiment of a second stationary member of the dual effect heat exchange system with reduced cold and heat shock of the present invention;
FIG. 10 is a schematic structural diagram of a sealing part of the double-effect heat exchange system capable of reducing cold and heat shock according to the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments.
As shown in fig. 1, the double-effect heat exchange system capable of reducing cold and heat shock according to the present invention includes a silicon carbide heat exchanger 1, a heat exchange portion 2 and a heat source station 3, the silicon carbide heat exchanger 1 includes a tube 11, an end sealing device 12, a silicon carbide tube 13 and an end cap 14, the silicon carbide tube 13 is disposed in the tube 11, the silicon carbide tube 13 is connected to the end cap 14 through the end sealing device 12, the heat exchange portion 2 includes a first liquid inlet tube 201, a second liquid inlet tube 202, a sleeve 203, a first liquid outlet tube 204, a second liquid outlet tube 205, a first connecting tube 206, a second connecting tube 207 and a third connecting tube 208, the sleeve 203 is wrapped outside the tube 11, the first liquid inlet tube 201 is communicated with the inside of the sleeve 203, the second liquid inlet tube 202 is communicated with the inside of the tube 11, the first connecting tube 206 is communicated with the first liquid inlet tube 201 and the second liquid inlet tube 202, the first liquid outlet tube 204 is communicated with the inside of the sleeve 203, the second liquid outlet, the second connecting pipe 207 is communicated with the first liquid outlet pipe 204 and the second liquid outlet pipe 205, the third connecting pipe 208 is communicated with the first liquid outlet pipe 204 and the heat source station 3, the first liquid inlet pipe 201 is provided with a first valve 209 and a second valve 210, the first connecting pipe 206 is provided with a third valve 211, the first liquid outlet pipe 204 is provided with a fourth valve 212, the third connecting pipe 208 is provided with a fifth valve 213, and the first connecting pipe 206 is arranged between the first valve 209 and the second valve 210. Utilize heat transfer portion 2 can be simultaneously or respectively carry out even heating to the outside of carborundum heat exchanger or inside, make the carborundum heat exchanger keep having the heat transfer effect better at a predetermined temperature, can not cause cold and hot impact to the enamel layer in the body 11, through preventing the ageing increase of service life of sealed original paper.
The sleeve 203 is sleeved on the outer wall of the pipe body 11, the two ends of the sleeve 203 and the outer wall of the pipe body 11 form a heating cavity in a sealing mode, and the first liquid inlet pipe 201 and the first liquid outlet pipe 204 are communicated with the heating cavity. The outer wall of sleeve 203 sets up the heat preservation, prevents the heat radiation, reduces calorific loss.
The combination of the metal tube plate and the PTFE coating ensures the structural strength of the tube plate and the corrosion resistance; the adhesion between the tetrafluoro coating and the metal tube plate is enhanced by arranging the first fixing piece and the second fixing piece, the tetrafluoro coating is prevented from being peeled off, a gap 1252 is arranged between the supporting plate 123 and the first steel liner plate 121 and the pressure gauge 1253 is communicated, and the condition of medium leakage can be found timely when the pressure in the gap 1252 and the original pressure change under the condition of medium leakage; because the tube plates in the prior art are attached together, if the medium leaks, the end parts of all the silicon carbide tubes 13 are stained with the medium, and the specific sealing leakage of which silicon carbide tube or silicon carbide tubes 13 cannot be found in time, so that the whole tube plates need to be replaced, the specific leaked silicon carbide tubes 13 can be found after the gap 1252 exists, the replacement and maintenance efficiency is improved, and the workload is reduced.
One embodiment of the present invention
When only need to enter into sleeve pipe 203 through first feed liquor pipe 201 to hot water in first valve 209 and the heat source station 3 of second valve 210 in the condition of body 11 external heating, heat preservation to body 11, fifth valve 213 opens simultaneously, first drain pipe 204 and third connecting pipe 208 intercommunication, it guarantees the constancy of temperature of body 11 to circulate hot water between sleeve pipe 203 and heat source station 3, it is better to make the carborundum heat exchanger keep having the heat transfer effect at a predetermined temperature, can not lead to the fact cold and hot impact to the enamel layer in the body 11, through preventing the ageing increase of life of sealed original paper.
One embodiment of the present invention
When only needing to carry out the condition of heat exchange to body 11 inside during the use can open in first valve 209 and the third valve 211 heat source station 3 hot water get into first connecting pipe 206 rethread second feed liquor pipe 202 and enter into body 11 through first feed liquor pipe 201, heat body 11, open fourth valve 212 and fifth valve 213 simultaneously and open, second drain pipe 205 and third connecting pipe 208 intercommunication, circulate hot water in body 11 and heat source station 3 between the temperature in guaranteeing body 11, make silicon carbide heat exchanger heat transfer effect better, can not lead to the fact cold and hot impact life to the enamel layer in the body 11.
One embodiment of the present invention
When the tube body 11 and the sleeve 203 need to be heated simultaneously, hot water in the heat source station 3 enters the sleeve 203 through the first liquid inlet pipe 201 by opening the first valve 209 and the second valve 210, the tube body 11 is heated and insulated, hot water in the heat source station 3 enters the first connecting pipe 206 through the first liquid inlet pipe 201 and then enters the tube body 11 through the second liquid inlet pipe 202 by opening the third valve 211, the tube body 11 is heated, the fourth valve 212 and the fifth valve 213 are opened simultaneously, the first liquid outlet pipe 204 is communicated with the third connecting pipe 208, hot water is circulated between the sleeve 203 and the heat source station 3 to ensure that the temperature of the tube body 11 is constant, the second liquid outlet pipe 205 is communicated with the third connecting pipe 208 to circulate hot water between the tube body 11 and the heat source station 3 to ensure that the temperature in the tube body 11 is constant, so that the silicon carbide heat exchanger is kept at a preset temperature and has a better heat exchange effect, will not cause cold and hot impact to the enamel layer in the body 11, through preventing the ageing increase in service life of sealed original paper.
The first valve 209, the second valve 210, the third valve 211, the fourth valve 212 and the fifth valve 213 which are described in the invention are all electrically operated valves, the action moment is larger than that of a common valve, the opening and closing action speed of the electrically operated valves can be adjusted, the structure is simple, the maintenance is easy, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The temperature can be further adjusted by controlling the flow rate via an electrically operated valve.
As shown in fig. 2 and 3, the end seal device 12 includes a first steel bushing plate 121, a second steel bushing plate 122, a support plate 123, a seal portion 124, and a leak detection portion 125, the support plate 123 is disposed between the first steel bushing plate 121 and the second steel bushing plate 122, the leak detection portion 125 is disposed on the support plate 123, the leak detection portion 125 includes a protrusion 1251 provided at an edge of the support plate 123 contacting the first steel bushing plate 121, and a gap 1252 is formed between the protrusion 1251 and the first steel bushing plate 121, a detection tube is disposed on a top of the support plate 123, one end of the detection tube communicates with the gap 1252, the other end of the detection tube is connected to a pressure gauge 1253, a drain portion 1254 is disposed on a bottom of the support plate 123, and the seal portion 124 includes a first seal portion 124 disposed between the first steel bushing plate 121 and the silicon carbide tube 13, and a second seal portion 124 disposed between the second steel bushing plate 122 and the silicon carbide tube 13.
The protrusion 1251 is an annular step surrounding the circumference of one side of the support plate 123, a sealing ring is arranged between the protrusion 1251 and the first steel bushing plate 121, and a sealing ring is also arranged between the support plate 123 and the second steel bushing plate 122, so that medium leakage is prevented. Drain 1254 is a tap or valve that communicates with gap 1252.
As shown in fig. 4 and 5, the first steel liner plate 121 includes a steel liner 1201 and a tetrafluoro coating 1202, the steel liner 1201 includes a contact portion 1211 and a fixing portion 1212, the fixing portion 1212 is disposed around the contact portion 1211, a plurality of fixing holes 1213 are regularly distributed on the fixing portion 1212, a plurality of mounting holes 1214 are regularly arranged on the contact portion 1211, and the tetrafluoro coating 1202 is coated outside the contact portion 1211 and the mounting holes 1214. The steel lining 1201 is coated with the tetrafluoro coating 1202, so that the structural strength and the corrosion resistance of the tube plate are guaranteed. And the production cost is far lower than that of the PTFE tube plate, the processing and production difficulty is lower than that of an enamel tube plate, the yield is high, and waste is not easy to cause.
As shown in fig. 6, a first fastener 1215 is disposed between the contact 1211 and the tetrafluoro-coating 1202, and a second fastener 1216 is disposed between the mounting hole 1214 and the tetrafluoro-coating 1202. The adhesion between the tetrafluoro coating 1202 and the metal tube sheet is enhanced by providing the first fixture 1215 and the second fixture 1216, preventing the tetrafluoro coating 1202 from being peeled off.
As shown in fig. 7, the first holder 1215 is provided at least one, and the first holder 1215 is a groove having a notch formed on the contact portion 1211 and having a width smaller than that of a groove bottom. With such a groove, adhesion between the tetrafluoro coating 1202 and the metal tube sheet is enhanced, preventing the tetrafluoro coating 1202 from being peeled off. In the working process, the pressure is still high under the condition that the contact surface of the tetrafluoro and the heat exchanger has higher temperature, so the adhesion between the tetrafluoro coating 1202 and the metal tube plate needs to be increased by utilizing the first fixing frame.
The first fixing member 1215 is preferably a T-shaped groove provided on the contact portion 1211. Because there is great right-angle side in the bottom in T-slot to make anti peel force improve greatly, but because the tube sheet is circular in the course of working, so the processing degree of difficulty of production T-slot can increase.
The first fixing member 1215 is preferably a dovetail groove provided in the contact portion 1211. The bottom of the dovetail groove and the notch part have larger bevel edges so that the stripping resistance is greatly improved, but the bevel edges are smaller than the T-shaped groove, and the processing difficulty of the dovetail groove is smaller than that of the T-shaped groove. Although other irregular grooves are provided, the T-shaped groove and the dovetail groove are preferably selected, and the T-shaped groove or the dovetail groove can be selected to be used according to the requirement of the peeling resistance in specific use, and even the T-shaped groove or the dovetail groove and a plurality of T-shaped grooves or dovetail grooves are used simultaneously.
As shown in fig. 8, second securing member 1216 is a regular and/or irregular protrusion 1251 disposed radially along mounting hole 1214. By the projection 1251 radially arranged in the mounting hole 1214, the contact area between the tetrafluoro coating 1202 and the mounting hole 1214 is increased first, and the second tetrafluoro coating 1202 has a better anti-peeling effect by the projection 1251 radially arranged in the mounting hole 1214.
Second securing member 1216 is preferably provided with an isosceles trapezoidal protrusion 1251 radially of mounting hole 1214. By the projection 1251 radially arranged in the mounting hole 1214, the contact area between the tetrafluoro coating 1202 and the mounting hole 1214 is increased first, and the second tetrafluoro coating 1202 has a better anti-peeling effect by the projection 1251 radially arranged in the mounting hole 1214.
Second securing member 1216 is preferably provided with isosceles triangular shaped protrusions 1251 radially along mounting holes 1214, as shown in FIG. 9. When the second fixing member 1216 has an equilateral triangle shape, the contact area between the tetrafluoro coating layer 1202 and the mounting hole 1214 is increased by one time, and the peeling resistance is improved.
The thickness of the tetrafluoro coating 1202 is 2-5 mm. So as to obtain better corrosion prevention effect and save raw materials.
The combination of the metal tube plate and the tetrafluoro coating 1202 not only ensures the structural strength of the tube plate, but also ensures the corrosion resistance; the adhesion between the tetrafluoro coating 1202 and the metal tube sheet is enhanced by providing the first fixture 1215 and the second fixture 1216, preventing the tetrafluoro coating 1202 from being peeled off.
The first and second steel liner plates 121, 122 are identical in construction.
As shown in fig. 10, the first sealing portion 1241 includes a tetrafluoro washer, an O-ring, a tetrafluoro washer, a soft tetrafluoro filler, an O-ring, and a first sealing head, which are sequentially disposed in a direction away from the supporting plate 123, and the first sealing head abuts against the supporting plate 123, and the second sealing portion 1242 includes a tetrafluoro washer, an O-ring, a tetrafluoro washer, a soft tetrafluoro filler, an O-ring, and a second sealing head, which are sequentially disposed in a direction close to the supporting plate 123, and the second sealing head is in threaded connection with the second steel bushing plate 122.
The foregoing describes only some embodiments of the present invention and modifications and variations thereof will be apparent to those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. The double-effect heat exchange system capable of reducing cold and hot impacts is characterized by comprising a silicon carbide heat exchanger, a heat exchange part and a heat source station, wherein the silicon carbide heat exchanger comprises a pipe body, an end sealing device, a silicon carbide pipe and a pipe cover, the silicon carbide pipe is arranged in the pipe body, the silicon carbide pipe is connected with the pipe cover through the end sealing device, the heat exchange part comprises a first liquid inlet pipe, a second liquid inlet pipe, a sleeve, a first liquid outlet pipe, a second liquid outlet pipe, a first connecting pipe, a second connecting pipe and a third connecting pipe, the sleeve is coated outside the pipe body, the first liquid inlet pipe is communicated with the inside of the sleeve, the second liquid inlet pipe is communicated with the inside of the pipe body, the first connecting pipe is communicated with the first liquid inlet pipe and the second liquid inlet pipe, the first liquid outlet pipe is communicated with the inside of the sleeve, the second liquid outlet pipe is communicated with the inside of the pipe body, the second connecting pipe is communicated with the first liquid outlet pipe and the second, the third connecting pipe is communicated with the first liquid outlet pipe and the heat source station, the first liquid inlet pipe is provided with a first valve and a second valve, the first connecting pipe is provided with a third valve, the first liquid outlet pipe is provided with a fourth valve, the third connecting pipe is provided with a fifth valve, and the first connecting pipe is arranged between the first valve and the second valve.
2. The double-effect heat exchange system capable of reducing cold and heat shock of claim 1, wherein, the end sealing device comprises a first steel liner plate, a second steel liner plate, a supporting plate, a sealing part and a leakage detecting part, the supporting plate is arranged between the first steel lining tube plate and the second steel lining tube plate, the leakage detecting part is arranged on the supporting plate, the leakage detecting part comprises a bulge arranged on the edge of the supporting plate, which is in contact with the first steel lining tube plate, and a gap is formed between the bulge and the first steel liner plate, the top of the supporting plate is provided with a detection pipeline, one end of the detection pipeline is communicated with the gap, the other end of the detection pipeline is connected with the pressure gauge, the bottom of the support plate is provided with a liquid discharge part, the sealing part comprises a first sealing part arranged between the first steel lining plate and the silicon carbide tube and a second sealing part arranged between the second steel lining plate and the silicon carbide tube.
3. The double-effect heat exchange system capable of reducing cold and heat shock as claimed in claim 2, wherein the first steel lining plate comprises a steel lining and a tetrafluoro coating, the steel lining comprises a contact part and a fixing part, the fixing part is arranged around the contact part, a plurality of fixing holes are regularly distributed on the fixing part, a plurality of mounting holes are regularly arranged on the contact part, the tetrafluoro coating covers the outer sides of the contact part and the mounting holes, a first fixing part is arranged between the contact part and the tetrafluoro coating, and a second fixing part is arranged between the mounting holes and the tetrafluoro coating.
4. The double-effect heat exchange system capable of reducing cold and heat shock as claimed in claim 3, wherein the first fixing member is at least one groove, and the width of the notch formed on the contact portion is smaller than that of the groove bottom.
5. The double-effect heat exchange system capable of reducing cold and heat impact as claimed in claim 4, wherein the first fixing member is preferably a T-shaped groove formed on the contact portion.
6. The double-effect heat exchange system capable of reducing cold and heat shock as claimed in claim 4, wherein the first fixing member is preferably a dovetail groove formed on the contact portion.
7. The double-effect heat exchange system capable of reducing cold and heat shock as claimed in claim 3, wherein the second fixing member is a regular and/or irregular protrusion radially arranged along the mounting hole.
8. The double-effect heat exchange system capable of reducing cold and heat shock as claimed in claim 7, wherein the second fixing member is preferably provided with an isosceles trapezoid projection along the radial direction of the mounting hole.
9. The double-effect heat exchange system capable of reducing cold and heat shock as claimed in claim 7, wherein the second fixing member is preferably provided with isosceles triangle protrusions along the radial direction of the mounting hole.
10. The heat exchange system with double effects and capable of reducing cold and heat impact according to claim 2, wherein the first steel lining pipe plate and the second steel lining pipe plate are identical in structure, the first sealing portion comprises a tetrafluoro gasket, an O-shaped ring, a tetrafluoro gasket, soft tetrafluoro packing, an O-shaped ring and a first end socket which are sequentially arranged in a direction away from the supporting plate, the first end socket abuts against the supporting plate, the second sealing portion comprises a tetrafluoro gasket, an O-shaped ring, a tetrafluoro gasket, soft tetrafluoro packing, an O-shaped ring and a second end socket which are sequentially arranged in a direction close to the supporting plate, and the second end socket is in threaded connection with the second steel lining pipe plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277505.5A CN110174018B (en) | 2019-04-08 | 2019-04-08 | Double-effect heat exchange system capable of reducing cold and hot impact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277505.5A CN110174018B (en) | 2019-04-08 | 2019-04-08 | Double-effect heat exchange system capable of reducing cold and hot impact |
Publications (2)
| Publication Number | Publication Date |
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| CN110174018A CN110174018A (en) | 2019-08-27 |
| CN110174018B true CN110174018B (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910277505.5A Active CN110174018B (en) | 2019-04-08 | 2019-04-08 | Double-effect heat exchange system capable of reducing cold and hot impact |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3924411A1 (en) * | 1989-07-24 | 1991-01-31 | Hoechst Ceram Tec Ag | RIB TUBE HEAT EXCHANGER |
| CN101338983A (en) * | 2008-08-13 | 2009-01-07 | 王元平 | Heat exchanger |
| CN202973986U (en) * | 2012-12-11 | 2013-06-05 | 宁波科宁达工业有限公司 | Heat exchanger |
| CN203980955U (en) * | 2014-01-14 | 2014-12-03 | 郑州欣丰实业有限公司 | A kind of internal and external anti-corrosive type teflon heat exchanger |
| CN105547018B (en) * | 2016-02-01 | 2017-08-25 | 徐鹏飞 | Double tube plate heat exchanger |
| CN105910474B (en) * | 2016-06-29 | 2018-03-30 | 李志典 | More tubular sheet heat exchangers |
| CN205980874U (en) * | 2016-08-29 | 2017-02-22 | 济南擎雷换热科技有限公司 | Carborundum shell and tube heat exchanger |
| CN108050866A (en) * | 2017-12-29 | 2018-05-18 | 无锡英罗唯森科技有限公司 | A kind of carborundum double tube plate heat exchanger |
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2019
- 2019-04-08 CN CN201910277505.5A patent/CN110174018B/en active Active
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| CN110174018A (en) | 2019-08-27 |
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