CN203443414U - High-efficient heat exchanger for deep coal mine - Google Patents
High-efficient heat exchanger for deep coal mine Download PDFInfo
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- CN203443414U CN203443414U CN201320308495.5U CN201320308495U CN203443414U CN 203443414 U CN203443414 U CN 203443414U CN 201320308495 U CN201320308495 U CN 201320308495U CN 203443414 U CN203443414 U CN 203443414U
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- heat exchanger
- coal mine
- turbulent flow
- well
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Abstract
A high-efficient heat exchanger for deep coal mine belongs to the technical field of heat exchangers and comprises a water tank, a draft tube, a shell and a tube bundle, wherein the tube bundle includes a plurality of heat exchange tubes and fixation pieces, horizontal turbine mechanisms and vertical turbine mechanisms are alternatively arranged along the axial direction of the tube bundle, the horizontal turbine mechanisms and vertical turbine mechanisms all comprise heat exchange tube support rods, turbine rods which are alternatively distributed, and micro spoilers which are arranged on the turbine rods, the turbine rod is a rod type support replacing the existing arc-shaped baffle, the adjacent turbine mechanisms are mutually horizontally and vertically distributed and replace baffle plates as the support among the heat exchange tubes, so that the lateral flow of the shell pass fluid is changed into parallel flow, furthermore the thermal transfer dead band is greatly reduced, and the loss of the shell pass pressure drop due to repeated baffling of the fluid is greatly reduced; the surface coefficient of thermal transfer of the heat convection is kept at a certain value, the micro-scale flowing and thermal transfer of the fluid at low Reynolds number are achieved, and the thermal transfer efficiency is greatly increased.
Description
Technical field
The utility model relates to technical field of heat exchangers, particularly relates to a kind of well for deep well coal mine high-performance heat exchanger.
Background technology
Colliery is that the world today topmost fossil energy sources ，Yi China generator installation is example, and coal-fired unit accounts for whole installed capacitys approximately 80%.Colliery resource is along with the increase of mining rate and scope, and superficial part resource is fewer and feweri, and deep coalmine resource is by the standby guarantee that is the Future in China main body energy.
Along with the continuous increase of mining depth, protolith temperature constantly raises, and exploitation is day by day serious with the warm evil of height of driving face.This hot environment seriously reduces underground operators physical stamina letdown, operating efficiency, easily produces Heat stroke, thermal blooming and brings out other diseases and nerve center unbalance of system, thereby cause worker's protective capacities to reduce, and has a strong impact on production safety.Therefore, must develop as early as possible a kind of high-performance heat exchanger that is applicable to well for deep well coal mine, to solve the heat evil problem of well for deep well coal mine.
Heat exchanger is the key equipment in well for deep well coal mine exploitation, and based on water resource, energy-conservation and coal mining considering safely etc., water be take as medium at the well for deep well coal mine of exploitation in China, by the cooling exploitation working face of heat exchange method.The heat exchanger using in existing most of well for deep well coal mines mostly is conventional tube shell heat exchanger, and this kind of heat exchanger arranges some deflection plates at shell side, makes the tube bank of fluid high-speed transversal flow, thereby improves heat-transfer effect.But baffle heat exchanger has several critical defects: at shell-side, have a large amount of flow dead, make effective heat transfer area reduce 25～30%; The transversal flow of fluid makes tube bank produce induced vibration, forms tube head and becomes flexible or tube brakes, and plant life cycle is short; Shell-side flow resistance is large, increases the energy consumption of industrial water pump; Dirt easily deposits, and causes heat-transfer effect to worsen.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of well for deep well coal mine high-performance heat exchanger is provided, this well for deep well coal mine high-performance heat exchanger can greatly reduce heat transfer dead band, significantly reduce fluid because of the shell-side pressure drop that repeatedly baffling loses repeatedly, improve heat transfer efficiency.
The purpose of this utility model is achieved through the following technical solutions:
A kind of well for deep well coal mine high-performance heat exchanger is provided, comprise water tank, be connected in water tank guide shell, be connected in the housing of guide shell, in housing, be provided with tube bank, tube bank comprises a plurality of heat exchanger tubes and for the fixture of fixing a plurality of heat exchanger tubes, along tube bank axially spaced-apart, be provided with lateral turbulence mechanism and longitudinal turbulent flow mechanism, lateral turbulence mechanism and longitudinally turbulent flow mechanism include for supporting the rod baffle of heat exchanger tube and for the fixing baffling circle of rod baffle, rod baffle and heat exchanger tube be arranged in parallel, and the diameter of rod baffle equals the gap between adjacent two heat exchanger tubes; Between adjacent two rod baffle, be provided with turbulent flow bar, on turbulent flow bar, be provided with perturbation stream part.
Wherein, perturbation stream part is uniformly distributed on turbulent flow bar.
Wherein, adjacent Liang Ge lateral turbulence mechanism arranges a longitudinal turbulent flow mechanism.
Wherein, the structure of well for deep well coal mine high-performance heat exchanger is set to symmetrical structure.
Wherein, the diameter of rod baffle is greater than the diameter of turbulent flow bar.
Wherein, water tank bottom is provided with feet.
The beneficial effects of the utility model: the utility model is restrained axially spaced-apart by edge and is provided with lateral turbulence mechanism and longitudinal turbulent flow mechanism, based on principle of hydrodynamics, lateral turbulence mechanism and longitudinally turbulent flow mechanism be all in interval alternative distribution heat exchanger tube cramp bar and turbulent flow bar and be arranged on the perturbation stream part on turbulent flow bar, turbulent flow bar structure substitutes former arc baffle plate with flow resistance of rod-support, adjacent turbulent flow mechanism is mutually horizontal, perpendicular vertical distribution, replace deflection plate and make the supporter between heat exchanger tube, make shell-side fluid become PARALLEL FLOW from lateral flow, not only greatly reduced heat transfer dead band, and significantly reduced fluid because of shell-side pressure drop that repeatedly baffling loses repeatedly, also can make heat convection surface coefficient of heat transfer be stabilized in certain numerical value, realize Micro-flows and the heat transfer of liquid under low reynolds number, greatly increase heat transfer efficiency of the present utility model.
Accompanying drawing explanation
Utilize accompanying drawing to be described further utility model, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
The partial structurtes schematic diagram of Tu2Shi lateral turbulence mechanism.
Fig. 3 is the partial structurtes schematic diagram of longitudinal turbulent flow mechanism.
In Fig. 1 to Fig. 3, include:
Water tank 1;
Lateral turbulence mechanism 5;
Longitudinal turbulent flow mechanism 6;
Rod baffle 7;
Turbulent flow bar 8;
Feet 10.
The specific embodiment
With the following Examples the utility model is further described.
A kind of well for deep well coal mine high-performance heat exchanger of the present embodiment, as shown in Figure 1 to Figure 3, comprise water tank 1, be connected in the guide shell 2 of water tank 1, be connected in the housing 3 of guide shell 2, in housing 3, be provided with tube bank, tube bank comprises a plurality of heat exchanger tubes 4 and for the fixture of fixing a plurality of heat exchanger tubes 4, along tube bank axially spaced-apart, be provided with lateral turbulence mechanism 5 and longitudinal turbulent flow mechanism 6, lateral turbulence mechanism 5 and longitudinally turbulent flow mechanism 6 include for supporting the rod baffle 7 of heat exchanger tube 4 and for the fixing baffling circle of rod baffle 7, rod baffle 7 be arranged in parallel with heat exchanger tube 4, the diameter of rod baffle 7 equals the gap between adjacent two heat exchanger tubes 4, between adjacent two rod baffle 7, be provided with turbulent flow bar 8, on turbulent flow bar 8, be provided with perturbation stream part 9.
Wherein, perturbation stream part 9 is uniformly distributed on turbulent flow bar 8.
Wherein, adjacent Liang Ge lateral turbulence mechanism 5 arranges a longitudinal turbulent flow mechanism 6.Ji Yige lateral turbulence mechanism and a longitudinal turbulent flow mechanism are crisscross arranged.
Wherein, the structure of well for deep well coal mine high-performance heat exchanger is set to symmetrical structure, can make the flow rate of liquid of heat exchange stable.
Wherein, rod baffle 7 diameters are greater than the diameter of turbulent flow bar 8.The effect of turbulent flow bar 8 is fixedly perturbation stream parts, so diameter need not be very large.The effect of perturbation stream part is to make fluid turbulization, augmentation of heat transfer.
Wherein, water tank 1 bottom is provided with feet 10.Feet 10 can padded heat exchanger, and heat exchanger is not placed directly in ground, can reduce heat and spread out of from ground.
The utility model is restrained axially spaced-apart by edge and is provided with lateral turbulence mechanism 5 and longitudinal turbulent flow mechanism 6, based on principle of hydrodynamics, lateral turbulence mechanism 5 and longitudinally turbulent flow mechanism 6 be all in interval alternative distribution heat exchanger tube 4 cramp bars and turbulent flow bar 8 and be arranged on the perturbation stream part 9 on turbulent flow bar 8, turbulent flow bar 8 structures substitute former arc baffle plate with flow resistance of rod-support, adjacent turbulent flow mechanism is mutually horizontal, perpendicular vertical distribution, replace deflection plate and make the supporter between heat exchanger tube 4, make shell-side fluid become PARALLEL FLOW from lateral flow, not only greatly reduced heat transfer dead band, and significantly reduced fluid because of shell-side pressure drop that repeatedly baffling loses repeatedly.Also can make heat convection surface coefficient of heat transfer be stabilized in certain numerical value, realize Micro-flows and the heat transfer of liquid under low reynolds number, greatly increase heat transfer efficiency of the present utility model.
Design cause of the present utility model is as follows:
1. exchange capability of heat is strong.The core of whole heat exchanger is heating and cooling, and heat exchanger is the instrument of Btu utilization and conversion, and dynamical heat exchanger must be provided.Rod baffle device is the core component of well for deep well coal mine high-performance heat exchanger.The diameter of rod baffle 7 equals the gap between adjacent two heat exchanger tubes 4, thereby gapless between rod baffle 7 and heat exchanger tube 4.The passage that heat exchanger tube 4 forms through the rod baffle 7 on adjacent baffling circle, is tightly clamped by rod baffle 7, from four orientation up and down, fixes.Its object is by improving rod baffle 7 support patterns, thereby has suppressed the bad vibration of pipe.Rod baffle 7 is mutually vertical with pipe, and its way of contact is a contact, so it has stronger inhibitory action to tube vibration, is convenient to again heat exchanger tube 4 and is wrong row and arranges, and therefore pipe is difficult for causing wearing and tearing.This can improve logarithmic decrement ratio, to reduce the vibration of fluid to pipe, increases the service life, and improves exchange capability of heat.
2. compact conformation.The first, the lift space that mine provides is very little, and the volume of equipment is strictly controlled, and requires compact equipment.Constant or reduce in the situation that at heat exchange area, by improving the logarithmic mean temperature difference (LMTD) of fluid, can guarantee the job requirement of heat exchanger.Adopt after the utility model, can greatly reduce fluid resistance, improve flow velocity, thereby increase fluid logarithmic mean temperature difference (LMTD), reach the operating efficiency that guarantees heat exchanger in the situation that of less heat exchange area.Reducing and making reducing of heat exchanger cumulative volume of heat exchange area, therefore makes the structure of heat exchanger more compact, saves space and material and reaches application target.
The second, core component of the present utility model adopts after the Micro-flows and heat transfer technology of liquid under low reynolds number, has greatly reduced flow dead, is equivalent to increase effective heat exchange area.Identical with traditional heat exchangers volume in the situation that, effective heat transfer area of the present utility model increases by 20～30%.
2 points to sum up, well for deep well coal mine high-performance heat exchanger compact conformation, occupies little space, and heat exchange efficiency is high.
3. antiseptic power is strong.In mine water, particularly chlorion content is high for various mineral matters, very strong to equipment corrosion; Therefore must adopt relevant anticorrosive, improve the anti-corrosion capability of heat exchanger.This novel well for deep well coal mine high-performance heat exchanger is in order to reach anti-flow-induced corrosion, specially under shell side the time, by the utilization turbulent flow technology that misplaces, the fluid of heat exchanger tube 4 outer surfaces of making to flow through becomes a plume into multiple flow, and fluid longitudinal stream is crossed tube bank, and flow resistance is little, also the perturbation of strengthening current when preventing flow-induced vibration is moving, constantly change flow direction and the flowing velocity of fluid, produce mixed flow, greatly reduce flow dead and leakage current dead band.Eliminate flow dead, reduced dirt deposition, effectively prevented the corrosion of the impurity such as dirt to pipe.Can reduce the workload that device interior cleans, extend the cleaning frequency, anticorrosion ability is remarkable.
4. heat exchange property is good.Heat exchanger tube 4 is heat exchange elements of heat exchanger, and heat exchanger tube 4 carries out heat exchange by tube wall, has following five factors that affect heat transfer effect in heat transfer process:
(1) thermal resistance R1: medium makes heat be transmitted to heat exchanger tube 4 walls by heat convection, the size of convection heat transfer intensity determines the quality of exchange capability of heat, and we are referred to as thermal resistance R1, and the size of thermal resistance R1 is relevant with the flow condition of steam and tube surface situation;
(2) dirtiness resistance R2 and R4: pipe surfaces externally and internally respectively has one deck dirt, to heat, transmission has negative effect to dirt, is called dirtiness resistance R2 and R4;
(3) thermal conduction resistance R3: the height of tube wall heat conduction coefficient is reflected in the size of thermal conduction resistance R3.R3 is relevant with tubing;
(4) heat convection thermal resistance R5: the heat of tube wall transmission transmits to medium by heat convection, the heat convection thermal resistance of generation is called R5.
R is less for heat exchanger heat exchange thermal resistance, and heat-transfer capability is stronger.For water-water heater, the impact of R1, R2 is most important, therefore the target of augmentation of heat transfer is mainly to reduce R1 and R2.
R1 and water flow velocity are inversely proportional to, but flow velocity in housing 3 to improve be limited.
R2 is relevant with the thickness of dirt, and augmentation of heat transfer is mainly the deposition of taking measures to reduce dirt.
R3 is determined by material.
Through researching and analysing discovery, the slight disturbance of certain frequency can weaken laminar boundary layer greatly, reduces thermal resistance R1, dirtiness resistance R2 and R4 and heat convection thermal resistance R5, improves the coefficient of heat transfer.Traditional heat exchangers, due to its structure limitation, be need to strengthen heat transfer and must be improved flow velocity, but can increase resistance after speed-raising, produces vibration, and this contradiction is that the structure of traditional baffle heat exchanger determines.
When fluid flows through object, from micro-analysis, the liquid of abuts on surface is immobilising, Here it is our said laminar boundary layer.Laminar boundary layer is maximum effect factor that also can make convection transfer rate low.
Through research, find, by rod baffle 7, change flow condition and can greatly weaken laminar boundary layer, reduce R1 and R5, improve convection transfer rate.
Well for deep well coal mine high-performance heat exchanger of the present utility model has following advantage:
1), eliminate flow dead, improve effective heat transfer area;
2), change uniform flow field is inhomogeneous flow field, makes internal fluid that heat exchange also occur, and improves heat exchanger effectiveness;
3), compare with traditional baffle plate type heat exchanger, processing is simple, compact conformation, under equal conditions, heat transfer coefficient improves 30～50%, effectively heat transfer area increases by 20～30%, can fully carry out heat exchange, reduces thermal loss, flow resistance reduces 20～30%, can greatly reduce the power consumption of pump.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. a well for deep well coal mine high-performance heat exchanger, comprise water tank, be connected in water tank guide shell, be connected in the housing of guide shell, in housing, be provided with tube bank, tube bank comprises a plurality of heat exchanger tubes and for the fixture of fixing a plurality of heat exchanger tubes, it is characterized in that: along tube bank axially spaced-apart, be provided with lateral turbulence mechanism and longitudinal turbulent flow mechanism, lateral turbulence mechanism and longitudinally turbulent flow mechanism include for supporting the rod baffle of heat exchanger tube and for the fixing baffling circle of rod baffle, rod baffle and heat exchanger tube be arranged in parallel, and the diameter of rod baffle equals the gap between adjacent two heat exchanger tubes; Between adjacent two rod baffle, be provided with turbulent flow bar, on turbulent flow bar, be provided with perturbation stream part.
2. a kind of well for deep well coal mine high-performance heat exchanger as claimed in claim 1, is characterized in that: perturbation stream part is uniformly distributed on turbulent flow bar.
3. a kind of well for deep well coal mine high-performance heat exchanger as claimed in claim 1, is characterized in that: adjacent Liang Ge lateral turbulence mechanism arranges a longitudinal turbulent flow mechanism.
4. a kind of well for deep well coal mine high-performance heat exchanger as claimed in claim 1, is characterized in that: the structure of well for deep well coal mine high-performance heat exchanger is set to symmetrical structure.
5. a kind of well for deep well coal mine high-performance heat exchanger as claimed in claim 1, is characterized in that: the diameter of rod baffle is greater than the diameter of turbulent flow bar.
6. a kind of well for deep well coal mine high-performance heat exchanger as claimed in claim 1, is characterized in that: water tank bottom is provided with feet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320308495.5U CN203443414U (en) | 2013-05-31 | 2013-05-31 | High-efficient heat exchanger for deep coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320308495.5U CN203443414U (en) | 2013-05-31 | 2013-05-31 | High-efficient heat exchanger for deep coal mine |
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| Publication Number | Publication Date |
|---|---|
| CN203443414U true CN203443414U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320308495.5U Expired - Lifetime CN203443414U (en) | 2013-05-31 | 2013-05-31 | High-efficient heat exchanger for deep coal mine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482783A (en) * | 2014-12-26 | 2015-04-01 | 新奥科技发展有限公司 | Shell-and-tube heat exchanger |
| CN107606976A (en) * | 2017-09-27 | 2018-01-19 | 洛阳市石化配件制造有限公司 | Exchange heat chipset and plate type heat exchanger |
-
2013
- 2013-05-31 CN CN201320308495.5U patent/CN203443414U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482783A (en) * | 2014-12-26 | 2015-04-01 | 新奥科技发展有限公司 | Shell-and-tube heat exchanger |
| CN107606976A (en) * | 2017-09-27 | 2018-01-19 | 洛阳市石化配件制造有限公司 | Exchange heat chipset and plate type heat exchanger |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |