CN113035396A - Double-wheel double-blade composite power air blowing type efficient heat exchanger built in containment - Google Patents
Double-wheel double-blade composite power air blowing type efficient heat exchanger built in containment Download PDFInfo
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- CN113035396A CN113035396A CN202110246364.8A CN202110246364A CN113035396A CN 113035396 A CN113035396 A CN 113035396A CN 202110246364 A CN202110246364 A CN 202110246364A CN 113035396 A CN113035396 A CN 113035396A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/24—Promoting flow of the coolant
- G21C15/253—Promoting flow of the coolant for gases, e.g. blowers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention provides a containment built-in efficient heat exchanger adopting double-wheel double-blade composite power blowing type. The cutting type air blowing system comprises a water delivery structure, a jet flow structure, an air blowing structure, a water drainage pipe and an exhaust pipe. The two blowing systems are respectively arranged at the upper part and the lower part to form a composite power blowing system, and the potential energy of water flow condensed by steam can be converted into jet kinetic energy to drive the blowing impeller to rotate, so that the non-condensable gas film near the heat exchange tube is blown away, and the steam is better condensed and exchanges heat on the outer surface of the heat exchange tube. The invention utilizes the composite blowing system to effectively thin the non-condensable gas film, enhances the contact of steam and the tube bundle, realizes high-efficiency heat transfer, ensures that the interior of the containment can be efficiently cooled and depressurized under accident conditions, enhances the safety of the containment and provides a feasible scheme for reducing the construction cost of the containment.
Description
Technical Field
The invention relates to a passive containment cooling system efficient heat exchange device, in particular to a containment built-in efficient heat exchanger adopting a double-wheel double-blade composite power blowing type.
Background
In recent years, along with the shortage of world energy, many clean energy sources are rapidly developed, wherein nuclear energy is the rapidly developed clean energy source, and the nuclear energy has a vital role in meeting the electric power requirements of China, optimizing the energy structure and reducing the environmental pollution. However, the nuclear energy brings many risks while bringing clean and efficient energy to human beings. How to enhance the safety of nuclear power plants has been a focus of attention of related researchers. In order to relieve serious consequences of accidents and effectively guarantee the safety of a nuclear power plant, a passive containment cooling system is widely applied to the third-generation nuclear power technology.
The passive containment cooling system generally comprises a containment built-in heat exchanger, a containment external heat exchange water tank, and pipelines and valves for connecting the heat exchange water tank and the heat exchanger. When a reactor is subjected to a breach accident, a large amount of high-temperature and high-pressure steam is generated in the containment vessel and contacts with a heat transfer pipe of the built-in heat exchanger to form a condensation heat exchange process, the water temperature of an upper pipe section of the heat exchanger is continuously increased, and the density is continuously reduced. Natural circulation flow is formed under the driving of the difference of gravity of the upper pipe section and the lower pipe section, so that the heat inside the containment vessel is effectively led out, and the excess temperature and the excess pressure of the containment vessel are prevented.
When an accident occurs in the reactor, in order to enhance the heat deriving capacity in the containment, a heat exchange strengthening measure of the containment passive heat exchanger needs to be considered. In the condensation heat exchange process, a small amount of non-condensable gas has an obvious inhibiting effect on condensation heat exchange, so that the reduction of high-concentration air near the heat transfer pipe and in the air space above the containment can be considered to enhance the heat exchange capacity of the heat exchanger. In the prior patents, some inventions only aim at the long-term operation capacity of a heat exchange water tank, and the heat exchange capacity of a heat exchanger arranged in a containment cannot be considered. For example, patents with patent numbers CN201611061901.7 and CN201810662023.7 all design a reinforced heat exchange structure of a novel heat exchange water tank, so that the passive containment cooling system can derive heat in the containment for a long time. Patents with publication numbers CN202614053U, CN108206064A, and CN206907494U provide new passive heat exchange system structures, respectively. These patents do not contemplate enhancing the heat transfer capability of the internal heat exchanger itself. In the accident stage, a large amount of non-condensable gas is attached to the surface of the heat transfer pipe of the inner heat exchanger, so that the influence on the condensation heat transfer capability is large, and the disclosed patent fails to provide an effective solution to the problem.
Therefore, it is necessary to invent a double-wheel double-blade composite power blowing type containment built-in efficient heat exchanger, which can enhance the heat exchange capability of the heat exchanger by blowing away high-concentration air around a heat transfer pipe and in the whole upper space of the containment, so as to efficiently take away a large amount of steam generated when a breach accident occurs in the containment. The over-temperature and over-pressure in the containment vessel are prevented, and the safe operation capability of the nuclear power station is improved.
Disclosure of Invention
The invention aims to provide a double-wheel double-blade composite power blowing type built-in high-efficiency heat exchanger for a containment vessel, so that the high-efficiency heat in the containment vessel is led out, the structural integrity of the containment vessel is ensured, and a feasible scheme is provided for reducing the construction cost of the containment vessel.
The purpose of the invention is realized as follows: the heat exchanger with the built-in containment comprises a heat exchanger inlet header, a heat exchanger outlet header, a heat exchange tube bundle, an upper tube section and a lower tube section, wherein the upper tube section and the lower tube section are used for connecting the heat exchanger and a heat exchange water tank with the built-out containment; the first blowing structure comprises a first blowing impeller, a main shaft where a rotary table is located transmits motion to the first blowing impeller through a gear steering box, the first blowing impeller is located at the middle upper portion of the built-in containment heat exchanger, the second blowing structure comprises a rotating wheel and a second blowing impeller, the rotating wheel is arranged at the outlet of a nozzle, the motion is transmitted to the second blowing impeller through the gear steering box, the second blowing impeller is located at the middle lower portion of the built-in containment heat exchanger, the nozzle and the rotating wheel are located in a driving shell, the driving shell is connected with the inner wall of the containment through a support column, one end of a drain pipe is arranged on the driving shell at the lower portion of.
The invention also includes such structural features:
1. an inlet header and an outlet header of the heat exchanger arranged in the containment adopt annular headers.
2. The heat exchange tube bundle is a straight tube light pipe or a spiral light pipe.
3. The gear steering box is of a meshing gear structure capable of changing the motion direction.
4. After a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards on the heat exchanger arranged in the containment along the gravity direction, the condensed water is collected by the funnel and continuously flows downwards through the funnel water delivery pipe, the condensed water firstly reaches the water bucket type water wheel, the water bucket is struck due to the water flow potential energy of the water bucket, so that the water bucket type water wheel starts to rotate anticlockwise and quickly, the rotating force is transmitted to the first blowing impeller, the first blowing impeller rotates quickly, a high-concentration non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle is enhanced, and the high-; when the condensate water after first acting continues to flow downwards and reaches the jet flow mechanism, due to the existence of water flow potential energy and the nozzle, the rotating wheel generates jet flow, the rotating wheel rotates rapidly, the rotating force is transmitted to the blowing impeller II, the blowing impeller II rotates rapidly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact between steam and the tube bundle is enhanced, and efficient heat transfer is realized.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention introduces a composite power blowing system into a heat exchanger arranged in a containment, wherein the composite power blowing system comprises a self-flow blowing system and a cutting blowing system. The non-condensable gas film around the heat exchange tube is blown away by utilizing the kinetic energy converted from the water flow potential energy generated after the steam is condensed, so that the gas film thickness of the tube bundle in the axial direction can be effectively reduced, the contact between the steam and the heat exchange tube is enhanced, and the condensation heat exchange capability of the heat exchanger arranged in the containment vessel is enhanced.
2) The two blowing systems are respectively arranged at the upper part and the lower part of the water conveying structure, so that the potential energy of water flow can be utilized to a greater extent, and the blowing devices are arranged at the two sides of the heat transfer pipe, so that high-concentration non-condensable gas films at different heights of the heat transfer pipe can be blown away as far as possible, and the condensation heat exchange capacity of the built-in heat exchanger is enhanced.
3) When a serious accident occurs to the reactor, the invention can efficiently take away the heat in the containment vessel, ensure the rapid temperature reduction and depressurization in the containment vessel, maintain the pressure and the temperature in the containment vessel within the safety limit value, and ensure the integrity of the containment vessel structure without reducing the construction cost of the containment vessel.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a free-flowing insufflation system;
FIG. 3 is a schematic view of a self-blowing configuration;
FIG. 4 is a schematic view of a switched-mode insufflation system;
fig. 5 is a schematic view of a click blow configuration.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1-5, the invention provides a double-wheel double-blade composite power blowing type efficient heat exchanger built in a containment. The heat exchanger mainly comprises a built-in containment heat exchanger 1, a heat exchanger inlet header 2, a heat exchanger outlet header 3, an upper pipe section 4, a lower pipe section 5, a water conveying structure 6, a gear steering box 7, a self-flowing air blowing structure 8, a jet flow structure 9, a cutting type air blowing structure 10, a drain pipe 11, a support column 12, a containment inner wall surface 13 and a containment air space 14.
The invention relates to a containment built-in efficient heat exchanger adopting double-wheel double-blade composite power air blowing type. The tube bundle of the heat exchanger arranged in the containment is preferably a straight tube light pipe or a spiral light pipe. The lower part of the tube bundle of the heat exchanger arranged in the containment is provided with a self-flowing blowing system and a cutting blowing system. One end of the upper pipe section is communicated with an inlet at the bottom of the external heat exchange water tank of the containment, and the other end of the upper pipe section extends into the containment and is communicated with an outlet header of the heat exchanger; one end of the lower pipe section is communicated with an outlet at the bottom of the external heat exchange water tank of the containment, and the other end of the lower pipe section extends into the containment and is communicated with an inlet header of the heat exchanger;
the inlet header and the outlet header of the heat exchanger arranged in the containment adopt annular headers, the inlet header of the heat exchanger is arranged as an inlet of the heat exchanger arranged in the containment, and the outlet header of the heat exchanger is arranged as an outlet of the heat exchanger arranged in the containment;
the heat exchange tubes are preferably straight tube light tubes or spiral light tubes, a plurality of heat exchange tubes are preferably uniformly arranged in an annular manner, and the heat exchange tubes are respectively communicated with the inlet header of the containment built-in heat exchanger and the outlet header of the containment built-in heat exchanger;
one end of the upper pipe section extends into the containment through a penetrating piece and is communicated with an outlet header of the built-in heat exchanger of the containment, and the other end of the upper pipe section is communicated with an inlet at the bottom of the heat exchange water tank;
one end of the lower pipe section extends into the interior of the containment through a penetrating piece and is communicated with an inlet header of the built-in heat exchanger of the containment, and the other end of the lower pipe section is communicated with an outlet at the bottom of the heat exchange water tank.
The self-flowing air blowing system comprises a water delivery structure, a water bucket type water wheel, an air blowing structure and a gear steering box, wherein the water bucket type water wheel is arranged in the water delivery pipe and is connected with the air blowing structure. The gravity flow type blowing system is connected with the inner wall surface of the containment through the support column; the water delivery structure comprises a funnel and a funnel water delivery pipe; the air blowing structure comprises a main shaft, a gear steering box and an air blowing impeller; the water bucket type water wheel comprises a wheel disc and a water bucket and is used for converting water flow potential energy into kinetic energy; the main shafts of the water bucket type water wheel and the blowing impeller are driven by a gear steering box;
the cutting type air blowing system comprises a water conveying structure, a jet flow structure, an air blowing structure, a drain pipe and a gear steering box, wherein the water conveying structure is connected with the jet flow structure, the jet flow structure is connected with the air blowing structure, and the cutting type air blowing system is connected with the inner wall surface of the containment through a support column; the jet flow structure comprises a jet pipe and a nozzle and is used for converting water flow potential energy into jet flow kinetic energy; the blowing structure comprises a rotating wheel, a main shaft and a blowing impeller. The rotating wheel comprises a wheel disc and a water bucket, and the rotating wheel is connected with the blowing impeller through a main shaft. One end of the drain pipe is arranged at the lower part of the rotating wheel, and the other end of the drain pipe is arranged near the side wall surface of the pile pit.
The invention is mainly applied to the rupture accident of the primary loop or the main steam pipeline when the reactor runs. During a reactor accident, a large amount of high-temperature and high-pressure steam is blown into the containment gas space 14, and the pressure and temperature in the containment vessel continuously rise. In the initial stage of blowing, the temperature and pressure rise generated by steam are mainly absorbed by the inner wall surface 13 of the containment vessel, a reactor pit and other internal components of the containment vessel; in the later stage of blowing, the heat in the containment is mainly led out by the heat exchanger 1 arranged in the containment.
During a reactor accident, the large volume of high temperature, high pressure gas released at the breach has a low density and some initial kinetic energy, causing the gas to flow up the gas stream in the containment. When steam contacts the heat exchanger 1 arranged in the containment, a large amount of steam can be condensed, meanwhile, a large amount of non-condensable gas is collected on the outer surface of each heat exchange tube, and therefore a high-concentration non-condensable gas film can be formed on the outer surface of each heat exchange tube, and steam condensation heat transfer is inhibited. In order to reduce the inhibition effect of the air film and promote condensation heat exchange of steam to a greater extent, a composite power air blowing system is designed, and comprises two different air blowing systems: a self-flowing blowing system and a cutting blowing system. Wherein gravity flow gas blowing system includes: water delivery structures (as shown in figure 2), water bucket wheels (as shown in figure 2) and self-flowing air blowing structures (as shown in figure 3). The click-type air blowing system includes: water delivery structures (see fig. 4), jet flow structures (see fig. 4), and chip blow structures (see fig. 5). The composite power blowing system can convert the water flow potential energy of steam condensation into blowing kinetic energy more efficiently, so that a high-concentration non-condensable gas film near the heat exchange tube is blown away, and steam is better condensed and exchanges heat on the outer surface of the heat exchange tube. Through the designed composite power blowing system, steam is efficiently condensed and exchanges heat among the heat exchangers 1 arranged in the containment vessel, and the outer wall surfaces of the heat exchangers 1 arranged in the containment vessel are washed. After the heat exchanger 1 arranged in the containment and the upper pipe section 4 are heated, the temperature of cooling water in the heat exchange pipe rises, the density drops, and a driving force is formed between the upper pipe section 4 and the lower pipe section 5 due to density difference, so that natural circulation is formed between the heat exchanger 1 arranged in the containment and the heat exchange water tank arranged outside the containment, and heat in the containment is continuously taken away.
The self-flowing air blowing system comprises a water delivery structure 6, a water bucket type water wheel 17 and a self-flowing air blowing structure 8. The pelton type water wheel 17 is arranged in the water delivery structure 6 and connected with the self-flowing blowing structure 8, and the self-flowing blowing system is connected with the inner wall surface 13 of the containment through the supporting column 12.
The cutting type air blowing system comprises a water conveying structure 6, a jet flow structure 9, a cutting type air blowing structure 10 and a water drainage pipe 11. The water delivery structure 6 is connected with the jet flow structure 9, the jet flow structure 9 is connected with the cutting type blowing structure 10, and the cutting type blowing system is connected with the inner wall surface 13 of the containment through the support column 12.
The water delivery structure 6 comprises a funnel 15 and a funnel water delivery pipe 16, and is used for collecting water flowing down from the built-in heat exchanger 1 of the containment after steam is condensed, and the water in the water delivery pipe 16 sequentially flows through the two blowing systems from top to bottom; the bucket type water wheel 17 in the self-flowing blowing system comprises a wheel disc and a water bucket 18, and the function of the bucket type water wheel is to convert the water flow potential energy into jet flow kinetic energy.
The self-flowing air blowing structure 8 comprises a main shaft 19, a gear steering box 7 and an air blowing impeller 20; the bucket water wheel 17 is connected with the blowing impeller 20 through the main shaft 19 and the gear steering box 7, the bucket water wheel 17 is set as a driving wheel, and the blowing impeller 20 is set as a driven wheel.
The cutting type air blowing structure comprises a rotating wheel 24, a main shaft 27, a water bucket 25, an air blowing impeller 28 and a gear steering box 26; the rotating wheel 24 is connected with a blowing impeller 28 through a main shaft 27 and a gear steering box 26, the rotating wheel 24 is set as a driving wheel, and the blowing impeller 28 is set as a driven wheel; the jet flow mechanism 9, the driving wheel and the drain pipe 11 are fixed on the driving shell 23.
After a large amount of steam is condensed on the heat exchanger 1 built in the containment, a large amount of condensed water is generated, and therefore the condensed water flows downwards on the heat exchanger 1 built in the containment along the direction of gravity, and at the moment, the funnel 15 in the water conveying structure 6 collects the condensed water and continues to flow downwards through the funnel water conveying pipe 16. The condensed water firstly reaches the water bucket type water wheel 17, due to the potential energy of the water flow, the water bucket 18 is hit, so that the water bucket type water wheel 17 starts to rotate anticlockwise quickly, the rotating force of the water bucket type water wheel is transmitted to the blowing impeller 20 through the main shaft 19 and the gear steering box 7, the blowing impeller 20 rotates quickly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact of steam and the tube bundle is enhanced, and efficient heat transfer is realized.
When the condensate water after first acting continues to flow downwards and reaches the jet flow mechanism 9, due to the existence of the water flow potential energy and the nozzle 22, jet flow is generated on the rotating wheel 24, the water bucket 25 is hit, the rotating wheel 24 rotates rapidly, the rotating force is transmitted to the blowing impeller 28 through the main shaft 27, the blowing impeller 28 rotates rapidly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact between steam and the tube bundle is enhanced, and efficient heat transfer is achieved. After the water sprayed from the nozzle 22 hits the water bucket 25, the water is discharged into the reactor pit through the water discharge pipe 11 to submerge the reactor core, so that the temperature and the pressure of the reactor core can be effectively reduced.
In summary, the present invention provides a containment built-in high efficiency heat exchanger using a two-wheel two-blade composite power air blowing type, which mainly comprises a heat exchanger inlet header, a heat exchange tube, a heat exchanger outlet header, a self-flowing air blowing system and a cutting type air blowing system. The heat exchange tube in the heat exchanger in the containment adopts a straight tube light pipe or a spiral light pipe. The heat exchanger outlet header is connected with the external heat exchange water tank of the containment through the upper pipe section, and the heat exchanger inlet header is connected with the external heat exchange water tank of the containment through the lower pipe section, so that a passive containment cooling system is formed. The self-flowing air blowing system comprises a water delivery structure, a water bucket type water wheel, an air blowing structure, an exhaust pipe and a gear steering box. The cutting type air blowing system comprises a water delivery structure, a jet flow structure, an air blowing structure, a drain pipe and an exhaust pipe. The two blowing systems are respectively arranged at the upper part and the lower part to form a composite power blowing system, and the potential energy of water flow condensed by steam can be converted into jet kinetic energy to drive the blowing impeller to rotate, so that the non-condensable gas film near the heat exchange tube is blown away, and the steam is better condensed and exchanges heat on the outer surface of the heat exchange tube. According to the invention, when a breach accident occurs in the containment, the heat in the containment can be efficiently taken away, the composite blowing system can be used for effectively thinning the non-condensable gas film, enhancing the contact of steam and the tube bundle, realizing efficient heat transfer, ensuring that the temperature and pressure in the containment can be efficiently reduced under the accident condition, enhancing the safety of the containment and providing a feasible scheme for reducing the construction cost of the containment.
Claims (9)
1. The utility model provides an adopt built-in high-efficient heat exchanger of double round bilobed composite power formula of blowing of containment, built-in heat exchanger of containment includes heat exchanger entry header, heat exchanger export header, heat exchange tube bank, is used for connecting the heat exchanger and the external heat exchange water tank's of containment upper segment and low tube section, and heat exchange tube bank UNICOM heat exchanger entry header and heat exchanger export header, its characterized in that respectively: the composite power air blowing system is connected with the inner wall of the containment through a support column and comprises a water delivery structure, a bucket type water wheel, a jet flow structure, an air blowing structure I, an air blowing structure II and a drain pipe, wherein the water delivery structure comprises a funnel and a funnel water delivery pipe which are connected with each other, the funnel is positioned below the heat exchange pipe bundle, the bucket type water wheel comprises a rotary table arranged in the funnel water delivery pipe and water buckets uniformly arranged on the rotary table, and the jet flow structure comprises a spray pipe connected with the lower end of the funnel water delivery pipe and a nozzle arranged at the end part of the spray pipe; the first blowing structure comprises a first blowing impeller, a main shaft where a rotary table is located transmits motion to the first blowing impeller through a gear steering box, the first blowing impeller is located at the middle upper portion of the built-in containment heat exchanger, the second blowing structure comprises a rotating wheel and a second blowing impeller, the rotating wheel is arranged at the outlet of a nozzle, the motion is transmitted to the second blowing impeller through the gear steering box, the second blowing impeller is located at the middle lower portion of the built-in containment heat exchanger, the nozzle and the rotating wheel are located in a driving shell, the driving shell is connected with the inner wall of the containment through a support column, one end of a drain pipe is arranged on the driving shell at the lower portion of.
2. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: an inlet header and an outlet header of the heat exchanger arranged in the containment adopt annular headers.
3. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: the heat exchange tube bundle is a straight tube light pipe or a spiral light pipe.
4. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: the gear steering box is of a meshing gear structure capable of changing the motion direction.
5. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: the gear steering box is of a meshing gear structure capable of changing the motion direction.
6. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: after a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards on the heat exchanger arranged in the containment along the gravity direction, the condensed water is collected by the funnel and continuously flows downwards through the funnel water delivery pipe, the condensed water firstly reaches the water bucket type water wheel, the water bucket is struck due to the water flow potential energy of the water bucket, so that the water bucket type water wheel starts to rotate anticlockwise and quickly, the rotating force is transmitted to the first blowing impeller, the first blowing impeller rotates quickly, a high-concentration non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle is enhanced, and the high-; when the condensate water after first acting continues to flow downwards and reaches the jet flow mechanism, due to the existence of water flow potential energy and the nozzle, the rotating wheel generates jet flow, the rotating wheel rotates rapidly, the rotating force is transmitted to the blowing impeller II, the blowing impeller II rotates rapidly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact between steam and the tube bundle is enhanced, and efficient heat transfer is realized.
7. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: after a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards on the heat exchanger arranged in the containment along the gravity direction, the condensed water is collected by the funnel and continuously flows downwards through the funnel water delivery pipe, the condensed water firstly reaches the water bucket type water wheel, the water bucket is struck due to the water flow potential energy of the water bucket, so that the water bucket type water wheel starts to rotate anticlockwise and quickly, the rotating force is transmitted to the first blowing impeller, the first blowing impeller rotates quickly, a high-concentration non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle is enhanced, and the high-; when the condensate water after first acting continues to flow downwards and reaches the jet flow mechanism, due to the existence of water flow potential energy and the nozzle, the rotating wheel generates jet flow, the rotating wheel rotates rapidly, the rotating force is transmitted to the blowing impeller II, the blowing impeller II rotates rapidly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact between steam and the tube bundle is enhanced, and efficient heat transfer is realized.
8. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: after a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards on the heat exchanger arranged in the containment along the gravity direction, the condensed water is collected by the funnel and continuously flows downwards through the funnel water delivery pipe, the condensed water firstly reaches the water bucket type water wheel, the water bucket is struck due to the water flow potential energy of the water bucket, so that the water bucket type water wheel starts to rotate anticlockwise and quickly, the rotating force is transmitted to the first blowing impeller, the first blowing impeller rotates quickly, a high-concentration non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle is enhanced, and the high-; when the condensate water after first acting continues to flow downwards and reaches the jet flow mechanism, due to the existence of water flow potential energy and the nozzle, the rotating wheel generates jet flow, the rotating wheel rotates rapidly, the rotating force is transmitted to the blowing impeller II, the blowing impeller II rotates rapidly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact between steam and the tube bundle is enhanced, and efficient heat transfer is realized.
9. The internal high-efficiency heat exchanger of the containment vessel adopting the double-wheel double-blade composite power blowing type is characterized in that: after a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards on the heat exchanger arranged in the containment along the gravity direction, the condensed water is collected by the funnel and continuously flows downwards through the funnel water delivery pipe, the condensed water firstly reaches the water bucket type water wheel, the water bucket is struck due to the water flow potential energy of the water bucket, so that the water bucket type water wheel starts to rotate anticlockwise and quickly, the rotating force is transmitted to the first blowing impeller, the first blowing impeller rotates quickly, a high-concentration non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle is enhanced, and the high-; when the condensate water after first acting continues to flow downwards and reaches the jet flow mechanism, due to the existence of water flow potential energy and the nozzle, the rotating wheel generates jet flow, the rotating wheel rotates rapidly, the rotating force is transmitted to the blowing impeller II, the blowing impeller II rotates rapidly, high-concentration non-condensable gas films near the heat exchange tube are blown away, the contact between steam and the tube bundle is enhanced, and efficient heat transfer is realized.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440660A (en) * | 2022-01-26 | 2022-05-06 | 江西红土地化工有限公司 | Intelligent and safe material heating device for pesticide |
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