CN104344750A - Tube-in-tube heat exchanger - Google Patents
Tube-in-tube heat exchanger Download PDFInfo
- Publication number
- CN104344750A CN104344750A CN201310330683.2A CN201310330683A CN104344750A CN 104344750 A CN104344750 A CN 104344750A CN 201310330683 A CN201310330683 A CN 201310330683A CN 104344750 A CN104344750 A CN 104344750A
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- tube
- pressure
- heat exchanger
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- 239000012530 fluid Substances 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
An embodiment of the invention provides a tube-in-tube heat exchanger, relates to the technical field of heat exchanging and solves the problem that the prior tube-in-tube heat exchanger has a small heat exchange coefficient. The tube-in-tube heat exchanger comprises at least one tube bundle member; each tube bundle member comprises a tube bundle, a high-pressure head and a low-pressure cylinder, the tube bundle is composed of a plurality of concentric round tubes, each concentric round tube has a shell side and a tube side, the tube sides are fixedly connected with a high-pressure tube plate, and the high-pressure head is welded to the high-pressure tube plate; the shell side is fixedly connected with a low-pressure tube plate; the low-pressure tube plate and the high-pressure tube plates are orifice plates concentric but different in orifice diameter; the low-pressure tube plate and the high-pressure tube plate are connected through the low-pressure cylinder.
Description
Technical field
The present invention relates to technical field of heat exchange, particularly relate to a kind of bushing type invention heat exchanger.
Technical background
At present, water-cooled heat exchanger mainly contains two kinds of forms: small-sized double pipe heat exchanger and big-and-middle-sized shell-and-tube heat exchanger.
There is the problems such as many, the easy leakages of pipe joint, flow resistance be large in small-sized bushing type.
Big-and-middle-sized shell-and-tube heat exchanger is primarily of housing, tube bank, tube sheet and envelope first class sections composition, and how rounded housing is, and bundle of parallel tubes or helix tube are equipped with in inside, and tube bank two ends are fixed on tube sheet.In shell-and-tube heat exchanger, carry out two kinds of fluids of heat exchange, a kind of at Bottomhole pressure, its stroke is called tube side; In the outer flowing of pipe, its stroke is called shell side.The wall of tube bank is heat-transfer area.
At present, the shell-and-tube heat exchanger that many uses are big-and-middle-sized, this heat exchanger structure is comparatively simple, and operation is reliable, but effect is bad viewed from heat exchange angle, because there is the bypass between deflection plate-housing, deflector body-heat exchanger tube, tube bank-housing when fluid flows in shell side.By the fluid of these bypasses, fully do not participate in heat exchange, the coefficient of heat transfer is lower.
Summary of the invention
The invention provides a kind of double pipe heat exchanger, for solving the problem that in prior art, the shell-and-tube heat exchanger coefficient of heat transfer is less.
In order to solve the problems of the technologies described above, the invention provides a kind of double pipe heat exchanger, comprise at least one tube bundle, described tube bundle comprises sleeve pipe tube bank, high pressure cover end and low-pressure sleeve; Wherein, sleeve pipe tube bank is made up of multiple concentric circles sleeve pipe, and concentric circles sleeve pipe comprises shell side and tube side; Tube side is connected and fixed by high pressure tubular plate type, and high pressure cover end welds with high pressure tubular plate type; Shell side is connected and fixed by low pressure tube sheet, and low pressure tube sheet and high pressure tubular plate type are the corresponding orifice plates of concentric different pore size, and described low pressure tube sheet is connected by low-pressure sleeve with between high pressure tubular plate type.
Wherein, described concentric circles sleeve pipe is arranged with triangular arranged and is formed sleeve pipe tube bank.
Wherein, described tube side walks high-pressure fluid, and described shell side walks low-pressure fluid, and two kinds of fluid countercurrent current are to reach abundant heat exchange.
Wherein, the mode selecting expanded joint or expanded and welded tube joint to combine is needed to fix described tube side and described high pressure tubular plate type according to pressure.
Wherein, different according to pressure, high pressure: 10MPa ~ 35MPa, select the mode that double flute expanding plus welding combines, middle pressure: 3MPa ~ 10MPa, selects the mode of single groove expanding plus welding, low pressure: 0.2MPa ~ 3MPa, selects single expanded joint mode.
Wherein, high pressure tubular plate type is according to the material machine-shaping such as different choice Q345,304SS or 20# steel of tube side fluid medium and pressure, and each hole is that triangular arranged is arranged.
Wherein, described low-voltage tube buttress is according to the difference of shell-side fluid medium and pressure, select the machine-shaping of Q345,304SS or 20# steel matter, each hole on low pressure tube sheet is that triangular arranged is arranged, during installation, the hole of each hole and high pressure tubular plate type is one to one.
Wherein, it is characterized in that, combined by the mode of series connection or parallel connection between each tube bundle.
Wherein, the serial or parallel connection between each tube bundle is realized by the connected mode of welding between importing and exporting tube bundle, screw thread or flange.
The double pipe heat exchanger that the embodiment of the present invention provides, need the fluid of heat exchanger to take reflux type for two kinds, tube side is fully contacted with shell-side fluid, heat transfer effect reaches most perfect condition, improve the coefficient of heat transfer, solve the problem that in prior art, the big-and-middle-sized heat exchanger coefficient of heat transfer is less.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the double pipe heat exchanger that the embodiment of the present invention provides;
Figure 2 shows that the structural representation of the high pressure tubular plate type that the embodiment of the present invention provides;
Figure 3 shows that the A-A of high pressure tubular plate type shown in Fig. 2 sectional side view;
Figure 4 shows that the structural representation of the low pressure tube sheet that the embodiment of the present invention provides;
Figure 5 shows that the low pressure tube sheet A-A sectional side view shown in Fig. 4;
Figure 6 shows that the structural representation of the sleeve type heat exchanger that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Figure 1 shows that the structural representation of the double pipe heat exchanger that the embodiment of the present invention provides.
As shown in Figure 1, the double pipe heat exchanger that the embodiment of the present invention provides, comprises at least one tube bundle 100, and described tube bundle 100 comprises sleeve pipe tube bank 101, high pressure cover end 102 and low-pressure sleeve 103.
Wherein, sleeve pipe tube bank 100 is made up of multiple concentric circles sleeve pipe 200 arranged with triangular arranged, and concentric circles sleeve pipe 200 comprises shell side 201 and tube side 202.Tube side 201 is connected and fixed by high pressure tubular plate type 300, and high pressure cover end 102 welds with high pressure tubular plate type 300; Shell side 201 is connected and fixed by low pressure tube sheet 400, and low pressure tube sheet 400 and high pressure tubular plate type 300 are corresponding orifice plates of concentric different pore size, and described low pressure tube sheet 400 is connected by low-pressure sleeve 103 with between high pressure tubular plate type 300.
Wherein, the pipe of two kinds of different-diameters is nested together and forms concentric circles sleeve pipe 200, and concentric circles sleeve pipe 200 peripheral pipe is called shell side 201, and in concentric circles sleeve pipe 200, inside tube is called tube side 202.
In an embodiment of the present invention, double pipe heat exchanger forms with the concentric circles sleeve pipe that the standard pipe that two kinds of sizes are different is formed by connecting, by two kinds of different mediums in shell side and tube side reverse flow to reach the effect of heat exchange.Need to select suitable standard tubing and the quantity determining every journey sleeve pipe according to the character of fluid and flow, arrange composition sleeve pipe tube bank with triangular arranged, the import and export two ends of tube bank are fixedly connected with by high-low pressure tube sheet.
In an embodiment of the present invention, usually select tube side to walk high-pressure fluid, shell side walks low-pressure fluid, and two kinds of fluid countercurrent current are to reach abundant heat exchange.Tube side high pressure tubular plate type is connected and fixed, and need the mode selecting expanded joint or expanded and welded tube joint to combine according to pressure, end socket welds with high pressure tubular plate type.Shell side overlaps effective low-voltage tube plate to be fixed, and low pressure tube sheet and high pressure tubular plate type are the corresponding orifice plates of concentric different pore size, with sleeve connection, takes the connected mode of welding equally.
Figure 2 shows that the structural representation of the high pressure tubular plate type that the embodiment of the present invention provides.
Figure 3 shows that the profile of the high pressure tubular plate type that the embodiment of the present invention provides.
As shown in Figures 2 and 3, in an embodiment of the present invention, high pressure tubular plate type 300 is the orifice plate of tube side, according to the difference of tube side fluid medium and pressure, can select the material machine-shapings such as Q345,304SS, 20# steel, each hole is that triangular arranged is arranged, different according to pressure, the mode that high pressure (10MPa ~ 35MPa) selects double flute expanding plus welding to combine, middle pressure (3MPa ~ 10MPa) selects the mode of single groove expanding plus welding, and low pressure (0.2MPa ~ 3MPa) selects single expanded joint mode.
Figure 4 shows that the structural representation of the low pressure tube sheet that the embodiment of the present invention provides.
Figure 5 shows that the profile of the low pressure tube sheet that the embodiment of the present invention provides.
As shown in Figures 4 and 5, in an embodiment of the present invention, low pressure tube sheet 400 is the orifice plate of shell side, according to the difference of shell-side fluid medium and pressure, the material machine-shapings such as Q345,304SS, 20# steel can be selected, each hole is that triangular arranged is arranged, during installation, the hole of each hole and high pressure tubular plate type is one to one, to ensure the tube side of sleeve pipe and the concentric of shell side.
Figure 6 shows that the structural representation of the sleeve type heat exchanger that the embodiment of the present invention provides.
In an embodiment of the present invention, as shown in Figure 6, if single tube bundle heat is inadequate, serial or parallel connection tube bundle 100 can be taked to combine.Be two heat exchanger tube tandem compounds, to adapt to the needs of Whole Equipment heat exchange amount and occupation of land.The import and export of interior pipe and sleeve pipe can take the multiple connected modes such as welding, screw thread, flange as required, and import and export direction can different directions and angle adjust as required, flexibly and easily.
In an embodiment of the present invention, heat exchangers in series and electric heater combination, this heat exchanger is used for air conditioner cold-heat water system.Electricity secondary heater can directly be connected in systems in which, and installation form is versatile and flexible.Entire system can level or be arranged vertically, and adjusts as required.
The design needs the fluid of heat exchanger to take reflux type for two kinds, and tube side is fully contacted with shell-side fluid, and heat transfer effect reaches most perfect condition.Thermal resistance, according to the material such as different choice carbon steel, stainless steel of medium, is down to minimum by tube side material.And the sleeve pipe of tube bank is triangular arranged, makes to arrange larger heat exchange area in minimum space.Thus obtain maximum heat exchange amount.
In addition, this heat exchanger installs draining valve additional at low spot usually, and high point installs air bleeding valve additional, and installation site is determined as required flexibly.Can be fabulous be applicable in the operating mode of the bad environments such as northern outdoor environment or High aititude.
Advantage of the present invention is that the coefficient of heat transfer is high, and device is compact to take up room little, and safety and stability, flexible for installation, be applicable to air conditioner refrigerating, oilfield chemical etc. need the various occasion needing heat exchange.
Claims (9)
1. a double pipe heat exchanger, is characterized in that, comprises at least one tube bundle, and described tube bundle comprises sleeve pipe tube bank, high pressure cover end and low-pressure sleeve;
Wherein, sleeve pipe tube bank is made up of multiple concentric circles sleeve pipe, and concentric circles sleeve pipe comprises shell side and tube side; Tube side is connected and fixed by high pressure tubular plate type, and high pressure cover end welds with high pressure tubular plate type; Shell side is connected and fixed by low pressure tube sheet, and low pressure tube sheet and high pressure tubular plate type are the corresponding orifice plates of concentric different pore size, and described low pressure tube sheet is connected by low-pressure sleeve with between high pressure tubular plate type.
2. double pipe heat exchanger according to claim 1, is characterized in that, described concentric circles sleeve pipe is arranged with triangular arranged and formed sleeve pipe tube bank.
3. double pipe heat exchanger according to claim 1, is characterized in that, described tube side walks high-pressure fluid, and described shell side walks low-pressure fluid, and two kinds of fluid countercurrent current are to reach abundant heat exchange.
4. double pipe heat exchanger according to claim 1, is characterized in that, needs the mode selecting expanded joint or expanded and welded tube joint to combine to fix described tube side and described high pressure tubular plate type according to pressure.
5. double pipe heat exchanger according to claim 4, it is characterized in that, different according to pressure, high pressure: 10MPa ~ 35MPa, select the mode that double flute expanding plus welding combines, middle pressure: 3MPa ~ 10MPa, selects the mode of single groove expanding plus welding, low pressure: 0.2MPa ~ 3MPa, selects single expanded joint mode.
6. double pipe heat exchanger according to claim 1, is characterized in that, high pressure tubular plate type is according to the material machine-shaping such as different choice Q345,304SS or 20# steel of tube side fluid medium and pressure, and each hole is that triangular arranged is arranged.
7. double pipe heat exchanger according to claim 6, it is characterized in that, described low-voltage tube buttress is according to the difference of shell-side fluid medium and pressure, select the machine-shaping of Q345,304SS or 20# steel matter, each hole on low pressure tube sheet is that triangular arranged is arranged, during installation, the hole of each hole and high pressure tubular plate type is one to one.
8. the double pipe heat exchanger according to any one of claim 1-7, is characterized in that, is combined between each tube bundle by the mode of series connection or parallel connection.
9. double pipe heat exchanger according to claim 8, is characterized in that, realizes the serial or parallel connection between each tube bundle by the connected mode of welding between importing and exporting tube bundle, screw thread or flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310330683.2A CN104344750A (en) | 2013-07-30 | 2013-07-30 | Tube-in-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310330683.2A CN104344750A (en) | 2013-07-30 | 2013-07-30 | Tube-in-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104344750A true CN104344750A (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310330683.2A Pending CN104344750A (en) | 2013-07-30 | 2013-07-30 | Tube-in-tube heat exchanger |
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| Country | Link |
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| CN (1) | CN104344750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247824A (en) * | 2016-07-29 | 2016-12-21 | 太仓英达锅炉设备有限公司 | A kind of heat-exchanger rig and combinations thereof heat exchanger fin |
| CN109029023A (en) * | 2017-06-08 | 2018-12-18 | 深圳市龙澄高科技环保（集团）有限公司 | A kind of more casing fast assembling-disassembling heat exchangers of novel set |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3545412A (en) * | 1968-06-04 | 1970-12-08 | Combustion Eng | Molten salt operated generator-superheater using floating head design |
| CN1719179A (en) * | 2005-07-11 | 2006-01-11 | 刘庆久 | Pipe heat exchanger |
| CN1736574A (en) * | 2005-07-08 | 2006-02-22 | 清华大学 | Tubular fixed bed reactor without hot spot |
-
2013
- 2013-07-30 CN CN201310330683.2A patent/CN104344750A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3545412A (en) * | 1968-06-04 | 1970-12-08 | Combustion Eng | Molten salt operated generator-superheater using floating head design |
| CN1736574A (en) * | 2005-07-08 | 2006-02-22 | 清华大学 | Tubular fixed bed reactor without hot spot |
| CN1719179A (en) * | 2005-07-11 | 2006-01-11 | 刘庆久 | Pipe heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247824A (en) * | 2016-07-29 | 2016-12-21 | 太仓英达锅炉设备有限公司 | A kind of heat-exchanger rig and combinations thereof heat exchanger fin |
| CN109029023A (en) * | 2017-06-08 | 2018-12-18 | 深圳市龙澄高科技环保（集团）有限公司 | A kind of more casing fast assembling-disassembling heat exchangers of novel set |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |