CN103743255B - A kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage - Google Patents
A kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage Download PDFInfo
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- CN103743255B CN103743255B CN201310693585.5A CN201310693585A CN103743255B CN 103743255 B CN103743255 B CN 103743255B CN 201310693585 A CN201310693585 A CN 201310693585A CN 103743255 B CN103743255 B CN 103743255B
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Abstract
The invention discloses a kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage belonging to condenser technical field.Direct-contact type condenser is assembled into cylindrical shell by upper shell and lower shell by adpting flange, and many gradient pores playpipe assembly in parallel is supported in upper shell and lower shell by fixed support respectively; Dehumidifying filter screen is supported in upper shell upper cylinder cooling water inlet top by fixed support; Upper shell top arranges incoagulable gas outlet, lower shell lower side arranges steam inlet, bottom welding condensation water outlet.Many gradient pores playpipe is the structure that sidewall and bottom have multiple dimensioned micropore; Thus form multiply in whole cylindrical barrel body inside and spray cooling water and directly contact with the steam in cylindrical shell thus realize the efficient condensation of steam.Achieve larger vapour-liquid contact area, higher vapour-liquid relative velocity and relatively large heat transfer temperature difference, there is volume little, the advantage that heat transfer efficiency is high, have broad application prospects.
Description
Technical field
The invention belongs to condenser technical field, particularly a kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage.
Background technology
Different from thermal power plant, the working media of geothermal power station, from underground heat fluid, does not need to recycle usually, does not therefore exist and adopts direct-contact type condenser easily to cause Working medium pollution problem, therefore direct-contact type condenser extensive use in geothermal power station.Compared with surface condenser, direct-contact type condenser avoids the partition thermal resistance of surface condenser, and steam directly contacts with cooling water, and heat exchanger efficiency is far above surface condenser.Direct-contact type condenser is divided into atmospheric pressure tubular type condenser and low position type condenser usually, and shared by atmospheric pressure tubular type condenser, head room is higher.This is that this tail pipe plays the effect of air pressure pipe because condensate water and cooling water collect inflow tail pipe at container bottom, enables condensate water lean on Action of Gravity Field to flow out through a water seal or air shuttle valve.From condenser internal structure, industrial existing condenser can be divided three classes usually, namely sprays tower condenser, porous plate formula and fills tower.Spray tower condenser mainly through the nozzle being positioned at top, cooling water to be atomized, thus increase the contact area of cooling water and steam, spray tower condenser except the pressure head needed for cooling circulating water, also need to provide extra injection pressure head, therefore the power consumption of pump is relatively large; Porous plate formula adopts placing porous column plate in tower, thus can form concurrent flow water curtain vertically downward, and steam is through cooled during water curtain; Filling bed type condenser, by arranging filler in tower, makes steam and cooling water repeated segmentation in flow process merge friendship mixed, increases vapour-liquid contact area, but owing to arranging that filler causes the reduction of circulation area, make flow resistance in tower relatively large.The key problem of geothermal power station's condenser is that geothermal power station's thermal efficiency is low, the heat exhaust of unit generated energy is larger, cause the condenser volume needed for unit generated energy larger, cost is higher, therefore, under the same operating conditions, reduce by certain technological means the key problem that condenser volume and cost are geothermal power station's condensers.
In a reversed-flow condenser vertically placed, cooling water temperature in the process of flowing downward constantly raises, and causes heat transfer temperature difference constantly to reduce, and under volumetric heat transfer coefficient and contact area permanence condition, heat output is Q=h
vv Δ t, wherein h
vfor volumetric heat transfer coefficient, V is the volume of condenser, and Δ t is the heat transfer temperature difference of cooling water and steam, and therefore, heat output constantly reduces along with the reduction of heat transfer temperature difference.Say from another point of view, suppose that the surface area of the water curtain that cooling water is formed or decline drop is A, surface coefficient of heat transfer is h
s, heat transfer temperature difference is Δ t, then heat exchange amount is Q=h
sa Δ t, when surface coefficient of heat transfer and heat transfer temperature difference certain, heat exchange area is larger, heat exchange amount is larger, in addition, heat transfer coefficient is also relevant with the relative velocity of vapour-liquid, vapour-liquid relative velocity is faster, heat transfer coefficient is also larger, therefore, direct-contact type condenser performance to be improved when steam and cooling water inlet parameter constant, by improving internal heat transfer modular construction to realize the technological break-through of three aspects, namely need improve vapour-liquid relative velocity, increase vapour-liquid contact area, increasing vapour-liquid mean temperature difference.
Consider the existing three quasi-representative direct-contact type condenser pluses and minuses of industry, the invention proposes a kind of many gradient pores playpipe condenser of tool plural parallel stage, this innovation structure is from the general principle of Heat And Mass Transfer in condenser, adopt vertical antipriming pipe in parallel, and the pore scale of porous playpipe is in the gradient distribution reduced gradually from top to bottom, achieve the multistage multi-point injection of cooling water in whole condenser internal volume, and steam and cooling water keep relatively large heat transfer temperature difference and average phase to speed in whole condenser, compare with conventional condenser, under identical intake condition condition, volumetric heat transfer coefficient can be significantly improved, reduce the volume of solidifying gas system, there is stronger practicality and wide application prospect.
Summary of the invention
The object of the invention is to propose a kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage, it is characterized in that, described many gradient pores playpipe direct-contact type condenser with plural parallel stage assembles cylindrical shell by upper shell 1 and lower shell 2 by adpting flange 3, many gradient pores playpipe assembly in parallel is welded by porous support plate 6 and many gradient pores playpipe 4 in parallel, many gradient pores playpipe assembly in parallel by fixed support 10 be supported in respectively upper shell 1 upper cylinder cooling water inlet 7 below and in lower shell 2 doffing cooling water inlet 8 following; Dehumidifying filter screen 5 is made up of fixed support 10 and is supported in upper shell 1 upper cylinder cooling water inlet 7 top; Upper shell 1 top arranges incoagulable gas outlet 11, lower shell lower side arranges steam inlet 9, bottom welding condensation water outlet 12.
Described dehumidifying filter screen 5 is single or multiple lift network structure, for removing the drop carried in incoagulable gas; Dehumidifying filter screen 5 is processed with fixing hole 13.
Described porous support plate 6 is processed with fixed bolt hole 17, vapor stream siphunculus 15 and cooling water dispensing orifice 14, and has cofferdam 16 at porous support plate 6 circumferential edges; Cooling water dispensing orifice 14 welds together with the openend of many gradient pores playpipe 4.Bottom and sidewall are processed with multiple dimensioned micropore 19, and the size distribution of described multiple dimensioned micropore is characterized as the gradient distribution that aperture from top to bottom reduces gradually.Wherein the height in cofferdam is not less than 10 times of described multiple dimensioned micropore maximum diameter of hole; For avoiding the water in described cofferdam to enter described vapor stream siphunculus 15, the height of described vapor stream siphunculus 15 is greater than the height in described cofferdam 16.
The basic principle of the yardstick coupling of the multiple dimensioned micropore of described sidewall and bottom is
wherein ρ
ffor the density of cooling water, ρ
gfor the density of cooled steam; G is acceleration of gravity, h
lfor the mouth of pipe is to the vertical height of areole, σ is surface tension and the D of vapour-liquid in condenser
lfor the aperture of local micropore; And on described many gradient pores playpipe vertical direction, the yardstick of gradient pore, according to waiting flow, meets relational expression:
wherein Q is the total flow entering described gripper shoe, m and n is respectively the hole row of described many gradient pores playpipe and the quantity of every round.
Outstanding advantages of the present invention is embodied in: 1) only carry out compared with cooling water splits in column plate plane with porous plate, when cooling water enters this innovation structure porous playpipe, pipe inner cooling water temperature on whole vertical direction is relatively uniform, alleviate water curtain temperature in decline process in porous plate formula condenser constantly raise cause heat transfer temperature difference constantly to reduce, heat exchange property compromises, 2) cooling water in playpipe sprays from the side and in the micropore of bottom, and cooling water is divided into a plurality of fluids and steam conducts heat in whole condenser internal volume, increases the contact area of vapour-liquid, 3) on porous playpipe vertical direction, due to the existence of gravity pressure reduction on depth direction, cooling water just can be sprayed from playpipe side and bottom micropore without the need to additional water pump head, compared with obtaining larger vapour-liquid relative velocity under low energy consumption, namely this innovation structure direct-contact type condenser achieves larger vapour-liquid heat transfer area simultaneously, higher vapour-liquid relative velocity and larger heat transfer temperature difference, heat transfer efficiency is high, therefore, under identical intake condition condition, can significantly reduce direct-contact type condenser volume, electric power can be widely used in, chemical industry, the fields such as utilization of new energy resources.
Accompanying drawing explanation
Fig. 1 is many gradient pores playpipe direct-contact type condenser structural representation of plural parallel stage.
Fig. 2 is gradient porous playpipe assembly schematic diagram in parallel.
Fig. 3 is described gradient porous playpipe structural representation.
Detailed description of the invention
The present invention proposes a kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage, is explained below in conjunction with accompanying drawing.
Figure 1 shows that many gradient pores playpipe direct-contact type condenser structural representation of plural parallel stage, in figure, many gradient pores playpipe direct-contact type condenser of plural parallel stage assembles cylindrical shell by upper shell 1 and lower shell 2 by adpting flange 3, many gradient pores playpipe assembly in parallel is welded by porous support plate 6 and many gradient pores playpipe 4 in parallel, many gradient pores playpipe assembly in parallel by fixed support 10 be supported in respectively upper shell 1 upper cylinder cooling water inlet 7 below and in lower shell 2 doffing cooling water inlet 8 following; Dehumidifying filter screen 5 is made up of fixed support 10 and is supported in upper shell 1 upper cylinder cooling water inlet 7 top; Upper shell 1 top arranges incoagulable gas outlet 11, lower shell lower side arranges steam inlet 9, bottom welding condensation water outlet 12.The filter screen 5 that wherein dehumidifies is single or multiple lift network structure, for removing the drop carried in incoagulable gas; Dehumidifying filter screen 5 is processed with fixing hole 13.
Figure 2 shows that gradient porous playpipe assembly schematic diagram in parallel.In figure, porous support plate 6 is processed with fixed bolt hole 17, vapor stream siphunculus 15 and cooling water dispensing orifice 14, and has cofferdam 16 at porous support plate 6 circumferential edges; Cooling water dispensing orifice 14 welds together with the openend of many gradient pores playpipe 4.Wherein the height in cofferdam is not less than 10 times of described multiple dimensioned micropore maximum diameter of hole; For avoiding the water in described cofferdam to enter described vapor stream siphunculus 15, the height of described vapor stream siphunculus 15 is greater than the height in described cofferdam 16.
Figure 3 shows that described gradient porous playpipe structural representation; Open top and the liquid distribution aperture 14 of many gradient pores playpipe of described plural parallel stage weld together, and bottom and sidewall are processed with multiple dimensioned micropore 19, and the size distribution of described multiple dimensioned micropore is characterized as the gradient distribution that aperture from top to bottom reduces gradually.
The basic principle of the yardstick coupling of the multiple dimensioned micropore of described sidewall and bottom is
wherein ρ
ffor the density of cooling water, ρ
gfor the density of cooled steam, be g acceleration of gravity, h
lfor the mouth of pipe is to the vertical height of areole, σ is surface tension and the D of vapour-liquid in condenser
lfor the aperture of local micropore; And on described many gradient pores playpipe vertical direction, the yardstick of gradient pore, according to waiting flow, meets relational expression:
wherein Q is the total flow entering described gripper shoe, m and n is respectively the hole row of described many gradient pores playpipe and the quantity of every round.
Operation principle of the present invention is: when cooling water enters this porous playpipe, pipe inner cooling water temperature on whole vertical direction is relatively uniform, alleviate water curtain temperature in decline process in porous plate formula condenser constantly raise cause heat transfer temperature difference constantly to reduce, heat exchange property compromises.Cooling water in playpipe sprays from the side and in the micropore of bottom, cooling water is divided into a plurality of fluids and steam conducts heat in whole condenser internal volume, only carry out compared with cooling water splits, increasing the contact area of vapour-liquid in column plate plane with porous plate; On porous playpipe vertical direction, due to the existence of depth direction static pressure, make cooling water from playpipe side and the ejection of bottom micropore, compared with just obtaining larger vapour-liquid relative velocity under low energy consumption, namely this direct-contact type condenser achieves larger vapour-liquid heat transfer area simultaneously, higher vapour-liquid relative velocity and larger mean temperature difference, heat transfer efficiency is high, therefore, under identical intake condition condition, can significantly reduce direct-contact type condenser volume, the fields such as electric power, chemical industry, utilization of new energy resources can be widely used in.
Claims (5)
1. one kind has many gradient pores playpipe direct-contact type condenser of plural parallel stage, it is characterized in that, described many gradient pores playpipe direct-contact type condenser with plural parallel stage assembles cylindrical shell by upper shell (1) and lower shell (2) by adpting flange (3), many gradient pores playpipe assembly in parallel is welded by porous support plate (6) and many gradient pores playpipe (4) in parallel, many gradient pores playpipe assembly in parallel by fixed support (10) be supported in respectively upper shell (1) upper cylinder cooling water inlet (7) below and the interior doffing cooling water inlet (8) of lower shell (2) below, dehumidifying filter screen (5) is made up of fixed support (10) and is supported in upper shell (1) upper cylinder cooling water inlet (7) top, upper shell (1) top arranges incoagulable gas outlet (11), lower shell lower side arranges steam inlet (9), bottom welding condensation water outlet (12).
2. have many gradient pores playpipe direct-contact type condenser of plural parallel stage according to claim 1, it is characterized in that, described dehumidifying filter screen (5) is single or multiple lift network structure, for removing the drop carried in incoagulable gas; Dehumidifying filter screen (5) is processed with fixing hole (13).
3. there is many gradient pores playpipe direct-contact type condenser of plural parallel stage according to claim 1, it is characterized in that, described porous support plate (6) is processed with fixed bolt hole (17), vapor stream siphunculus (15) and cooling water dispensing orifice (14), and has cofferdam (16) at porous support plate (6) circumferential edges; Cooling water dispensing orifice (14) welds together with the openend of many gradient pores playpipe (4); Bottom and sidewall are processed with multiple dimensioned micropore (19), and the size distribution of described multiple dimensioned micropore is characterized as the gradient distribution that aperture from top to bottom reduces gradually.
4. have many gradient pores playpipe direct-contact type condenser of plural parallel stage according to claim 3, it is characterized in that, the height in described cofferdam is not less than 10 times of described multiple dimensioned micropore maximum diameter of hole; For avoiding the water in described cofferdam to enter described vapor stream siphunculus (15), the height of described vapor stream siphunculus (15) is greater than the height of described cofferdam (16).
5. have many gradient pores playpipe direct-contact type condenser of plural parallel stage according to claim 3, it is characterized in that, the basic principle of the multiple dimensioned micropore of described sidewall and bottom pore size coupling is
wherein ρ
ffor the density of cooling water, ρ
gfor the density of cooled steam; G is acceleration of gravity, h
lfor the mouth of pipe is to the vertical height of areole, σ is surface tension and the D of vapour-liquid in condenser
lfor the aperture of local micropore; And on the vertical direction of described many gradient pores playpipe, the yardstick of gradient pore, according to waiting flow, meets relational expression:
wherein Q is the total flow entering described gripper shoe, m and n is respectively the row of described many gradient pores spray tube holes and the quantity of every round.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693585.5A CN103743255B (en) | 2013-12-17 | 2013-12-17 | A kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage |
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| CN201310693585.5A CN103743255B (en) | 2013-12-17 | 2013-12-17 | A kind of many gradient pores playpipe direct-contact type condenser with plural parallel stage |
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| CN103743255B true CN103743255B (en) | 2016-01-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5481410A (en) * | 1977-12-13 | 1979-06-28 | Toshiba Corp | Direct contact type condenser |
| JPH085265A (en) * | 1994-06-22 | 1996-01-12 | Fuji Electric Co Ltd | Direct contact type condenser |
| CN2506961Y (en) * | 2001-08-16 | 2002-08-21 | 耿作人 | Contact type condenser for gas (oil) combustion device |
| CN2529179Y (en) * | 2002-03-15 | 2003-01-01 | 江阴市海通传热技术有限公司 | Vapour-water mixer |
| CN2529180Y (en) * | 2002-03-15 | 2003-01-01 | 江阴市海通传热技术有限公司 | Plate vapour-water heat transfer complete unit |
-
2013
- 2013-12-17 CN CN201310693585.5A patent/CN103743255B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5481410A (en) * | 1977-12-13 | 1979-06-28 | Toshiba Corp | Direct contact type condenser |
| JPH085265A (en) * | 1994-06-22 | 1996-01-12 | Fuji Electric Co Ltd | Direct contact type condenser |
| CN2506961Y (en) * | 2001-08-16 | 2002-08-21 | 耿作人 | Contact type condenser for gas (oil) combustion device |
| CN2529179Y (en) * | 2002-03-15 | 2003-01-01 | 江阴市海通传热技术有限公司 | Vapour-water mixer |
| CN2529180Y (en) * | 2002-03-15 | 2003-01-01 | 江阴市海通传热技术有限公司 | Plate vapour-water heat transfer complete unit |
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Effective date of registration: 20200930 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: No.24, Yilin Jiayuan, lincui Road, Chaoyang District, Beijing Patentee before: GWDC PETROLEUM ENGINEERING SERVICE Co. |
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