CN111854009B - Anti-seismic direct expansion air conditioning unit for plant building level of diesel engine of third-generation nuclear power station - Google Patents
Anti-seismic direct expansion air conditioning unit for plant building level of diesel engine of third-generation nuclear power station Download PDFInfo
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- CN111854009B CN111854009B CN202010635153.9A CN202010635153A CN111854009B CN 111854009 B CN111854009 B CN 111854009B CN 202010635153 A CN202010635153 A CN 202010635153A CN 111854009 B CN111854009 B CN 111854009B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 33
- 230000035939 shock Effects 0.000 claims abstract description 25
- 239000006096 absorbing agent Substances 0.000 claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 241000886569 Cyprogenia stegaria Species 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000746 Structural steel Inorganic materials 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009423 ventilation Methods 0.000 description 17
- 230000002349 favourable effect Effects 0.000 description 11
- 230000007613 environmental effect Effects 0.000 description 9
- 238000013016 damping Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/32—Supports for air-conditioning, air-humidification or ventilation units
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third-generation nuclear power station, which comprises: air supply unit, heat exchanger unit and expansion valve group, air supply unit includes: the fan comprises a first main body, a fan mounting frame and a first nuclear-grade fan; the first main body is fixedly arranged and comprises a first mounting bracket and a mounting cavity, a first air inlet and a first air outlet are formed in the mounting cavity, an evaporator is arranged on the lower side of the mounting cavity, and the first mounting bracket comprises a first bottom frame; the fan mounting frame is fixedly connected with the first main body, a shock absorber is arranged on the lower side of the fan mounting frame, and the fan mounting frame is connected with the first bottom frame through the shock absorber; the first nuclear-grade fan is positioned in the mounting cavity; the heat exchanger unit includes: the second installation bracket, the condenser, the compressor and the second nuclear-grade fan; the expansion valve group comprises an expansion valve body, and the condenser, the compressor, the evaporator and the expansion valve body form a heat exchange loop. The invention has the advantage of strong anti-seismic performance.
Description
Technical Field
The invention relates to the technical field of nuclear power stations, in particular to a nuclear-level anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third-generation nuclear power station.
Background
The nuclear-grade anti-seismic direct expansion air conditioning unit installed in the ventilation air conditioning system of the diesel engine factory building at present mainly aims to meet the environmental temperature and humidity requirements (including the diesel engine process environmental requirements and the personnel comfort requirements) in the ventilation air conditioning system of the diesel engine factory building, and ensure the environmental conditions such as the temperature and humidity required by the running of diesel engines and related electrical instrument control equipment in the diesel engine factory building and the environmental comfort requirements of the staff of the diesel engine factory building.
The nuclear-grade anti-seismic direct expansion air conditioning unit plays an important role in further improving the temperature and humidity of a ventilation air conditioning system of a diesel engine factory building. In view of the requirement of the diesel engine factory building ventilation air conditioning system for meeting the comfort requirement of personnel, the system noise control aspect needs to be well controlled besides the requirement of the environment temperature and humidity.
When the nuclear-grade anti-seismic direct expansion air conditioning unit of the ventilation air conditioning system of the diesel engine plant works, untreated fluid passes through a system pipeline provided with the air conditioning unit, and the fan and the cooler of the indoor unit of the nuclear-grade anti-seismic direct expansion air conditioning unit perform pressurization and cooling effects, so that the air temperature and humidity requirement sent out by the air outlet at the tail end of the unit meets the comfort of personnel in the diesel engine plant and the temperature and humidity required by normal running of equipment, and the working environment of relevant staff in the diesel engine plant of the nuclear power plant is further improved.
Untreated fluid also reduces the noise of a nuclear centrifugal fan matched with an indoor unit of the unit through an air outlet silencer of the air conditioning unit, plays a positive role in controlling the overall noise of a ventilation air conditioning system of the diesel engine factory, ensures that the noise level of each corner and the overall environment of the diesel engine factory meets the relevant requirements, and further ensures the comfort of personnel.
In view of the fact that in the ventilation air conditioning system of the nuclear power station, due to the fact that more devices are operated in a diesel engine factory building, the installation space of corresponding ventilation devices is limited, the arrangement of ventilation and refrigeration devices in rooms is difficult, the flow demand in the room ventilation system is large, resistance generated in the system is also large, and higher requirements are put forward on the service life, operation stability, safety performance and anti-seismic performance of the devices.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
The invention provides a nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third-generation nuclear power station, which comprises: air supply unit, heat exchanger unit and expansion valve group, air supply unit includes: the fan comprises a first main body, a fan mounting frame and a first nuclear-grade fan;
the first main body is fixedly arranged and comprises a first mounting bracket and a first box body, the first box body is mounted in the first mounting bracket, the first mounting bracket is a structural steel member, a mounting cavity is arranged in the first box body, a first air inlet and a first air outlet are arranged on the mounting cavity, an evaporator is arranged on the lower side of the mounting cavity and is positioned beside the first air inlet, and the first mounting bracket comprises a first bottom frame formed in the middle of the mounting cavity;
the fan mounting frame is fixedly connected with the first main body, the fan mounting frame is positioned above the evaporator, a shock absorber is arranged on the lower side of the fan mounting frame, and the fan mounting frame is connected with the first bottom frame through the shock absorber;
the first nuclear-grade fan is positioned in the installation cavity, a first air inlet and a first air outlet are formed in the first nuclear-grade fan, the first air inlet is positioned in the installation cavity, and the first air outlet is communicated with the first air outlet;
the heat exchange unit includes: the condenser, the compressor and the second nuclear-grade fan are fixedly connected with the second mounting bracket, the second nuclear-grade fan comprises a second air inlet and a second air outlet, and the second air inlet or the second air outlet is arranged towards the condenser;
the expansion valve group comprises an expansion valve body, and the condenser, the compressor, the evaporator and the expansion valve body form a heat exchange loop.
When the nuclear-grade anti-seismic direct expansion air conditioning unit of the diesel engine plant of the third-generation nuclear power station is used, the second mounting bracket, the condenser, the compressor, the second nuclear-grade fan, the first nuclear-grade fan and the expansion valve body jointly form a heat exchange loop, and cold generated by the heat exchange loop is transmitted into the mounting cavity through the evaporator and is discharged outwards through the first nuclear-grade fan so as to control the environmental temperature; compared with the prior art, the nuclear-grade anti-seismic direct expansion air conditioning unit of the diesel engine factory building of the third-generation nuclear power station is provided with the first box body and the first mounting bracket, and the first mounting bracket is made of structural steel, so that the anti-seismic performance of the diesel engine factory building of the third-generation nuclear power station is greatly enhanced, and the fan mounting bracket is connected with the first main body through the shock absorber, so that the anti-seismic performance of the first nuclear-grade fan is further provided; in addition, the novel installation mode that the fan installation frame is fixedly connected to the middle of the installation cavity through the first bottom frame is adopted, the first bottom frame and the side wall of the first main body play a role in absorbing part of transverse vibration and longitudinal vibration, so that the anti-seismic performance of the air conditioning unit is effectively improved.
As some sub-aspects of the above technical solution, the shock absorber is a wire rope shock absorber. The steel wire rope shock absorber has good multidirectional shock absorption performance, nonlinear rigidity and nonlinear damping characteristics, and is strong in environmental adaptability, long in service life, various in installation mode, large in damping and convenient to install.
As some sub-schemes of the above technical scheme, the number of the dampers is four, namely, a first damper, a second damper, a third damper and a fourth damper, the first damper, the second damper, the third damper and the fourth damper are all located between the fan mounting frame and the first bottom frame, the first damper, the second damper, the third damper and the fourth damper are respectively arranged at the left side, the front side, the right side and the rear side of the first bottom frame, projections of the first damper and the third damper on a plane extending along the front-rear direction are not overlapped, and projections of the second damper and the fourth damper on a plane extending along the left-right direction are not overlapped. Because the wire rope bumper shock absorber has nonlinear rigidity and nonlinear damping characteristic, first bumper shock absorber, second bumper shock absorber, third bumper shock absorber and fourth bumper shock absorber adopt asymmetric structural arrangement mode, and when first bumper shock absorber, second bumper shock absorber, third bumper shock absorber and fourth bumper shock absorber stress vibration, form a plurality of frequencies, the vibration source of mutual different stress vibration of amplitude, be favorable to improving the complexity of system under vibrating condition, reduce the chance that resonance arouses the destruction.
As some sub-schemes of the technical scheme, the first nuclear-grade fan comprises a first nuclear-grade motor, a first fan shell and a first wind wheel, wherein the first fan shell and the first nuclear-grade motor are fixedly connected to the fan mounting frame, the first fan shell is a stainless steel member, the first air inlet and the first air outlet are formed on the first fan shell, and the first wind wheel is connected with the first nuclear-grade motor in a driving way. The first air inlet and the first outlet form a first ventilation channel in the first fan shell, and the first fan shell is arranged to be a stainless steel member, so that the corrosion rate of moisture in the first ventilation channel to the first fan shell is reduced, and the structural strength of the first fan shell is ensured.
As some sub-schemes of the above technical scheme, a resistive muffler is further disposed at the first exhaust outlet, and the first air outlet is communicated with the first exhaust outlet through the resistive muffler. Through setting up resistive muffler, be favorable to reducing the noise of first air outlet department.
As some sub-schemes of the above technical scheme, a drip tray is further arranged in the first mounting cavity, the drip tray is a heat insulation material member, the drip tray is located below the evaporator, and the drip tray is fixedly connected with the first main body. By providing a drip tray for receiving water dripping from the condenser surface; the heat preservation material can be foam, plastics, foamed plastic, concrete etc., and the drip tray is the heat preservation material component, is favorable to keeping the temperature in the installation cavity, improves air conditioning unit's energy efficiency.
As some sub-schemes of the above technical scheme, the heat exchanger unit further comprises a second main body, the second main body is fixedly connected to the upper side of the second mounting bracket, a second mounting cavity is arranged in the second main body, a second air inlet and a second air outlet are arranged on the second mounting cavity, the second air outlet is arranged on the upper side of the second mounting cavity, the compressor and the condenser are both positioned in the second mounting cavity, and the condenser is arranged on the side of the second air inlet; the second nuclear level fan is installed the upside of second main part, the second nuclear level fan is along vertical arrangement, the second nuclear level fan includes second air intake and second air outlet, the second air intake with second air exit intercommunication, the second air outlet intercommunication is external. The second nuclear level fan is used for promoting the air flow in the second installation cavity, and compressor and condenser all are located the second installation cavity, are favorable to the second nuclear level fan to dispel the heat both simultaneously, and in addition, the second nuclear level fan sets up in the top of installation cavity and along vertical arrangement, on the one hand is favorable to reducing the occupation in horizontal space, on the other hand, and it is connected through first main part with the compressor, and the amplitude, the frequency of two vibration sources of compressor and second nuclear level fan are all inconsistent, are difficult for arousing resonance when taking place the earthquake.
As some sub-schemes of the above technical scheme, the second nuclear-grade fan is an axial flow fan, the second nuclear-grade fan includes a second fan housing, a second nuclear-grade motor and a second impeller, the second nuclear-grade motor is in driving connection with the second impeller, the second fan housing is a tubular member, the second air inlet is formed at the lower side of the second fan housing, the second air outlet is formed at the upper side of the second fan housing, and the second nuclear-grade fan is installed in the second fan housing. The second nuclear-grade fan adopts the axial fan to have the characteristics of strong through-flow capacity, is more favorable to the condenser to dispel the heat fast.
As some sub-schemes of the above technical scheme, the heat exchanger unit further includes a reinforcing pull plate, the reinforcing pull plate is located on the upper side of the second fan housing, the lower side of the reinforcing pull plate is fixedly connected with the second fan housing, and the reinforcing pull plate extends out of the second fan housing along the transverse direction. Through setting up the reinforcement arm-tie, be favorable to improving the shock resistance of second fan shell, further improve the shock resistance of second main part, second nuclear level fan.
The nuclear-grade anti-seismic direct expansion air conditioning unit of the diesel engine plant of the third generation nuclear power plant has the advantages of firm structure, strong anti-seismic capability, stable, safe and reliable operation and convenient maintenance, and effectively ensures the requirements on environmental temperature and humidity, equipment manufacturability and personnel comfort in a ventilation air conditioning system of the diesel engine plant of the nuclear power plant; the invention is arranged in a diesel engine factory building of a nuclear power station, is used in the condition of complex equipment arrangement in the diesel engine factory building of a nuclear island and high resistance generated in a system; by installing the air conditioning unit in the diesel engine factory building, the air temperature and humidity requirements of the diesel engine factory building can meet the comfort of personnel in a room and the temperature and humidity requirements required by normal operation of equipment, and the working environment of the personnel in the diesel engine factory building can be further improved; the environmental temperature and humidity level in a nuclear island diesel engine factory building is improved; performing earthquake-resistant calculation on the air conditioning unit equipment body by using a method of earthquake floor reaction spectrum analysis, so as to meet the earthquake-resistant requirement of the equipment in a nuclear power station; after being connected with the system foundation and the anti-seismic bracket, the natural frequency of the equipment is higher and more complex, the rigidity is higher, the anti-seismic effect of the whole ventilation system with anti-seismic requirements is enhanced to a certain extent, and the anti-seismic effect of the whole ventilation air conditioning system of the diesel engine factory building is more facilitated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a front view structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a front view of an air blower set according to the present invention;
FIG. 3 is a schematic left-hand view of the blower assembly of the present invention;
FIG. 4 is a schematic diagram of a front view of a heat exchanger unit according to the present invention;
fig. 5 is a schematic diagram of a left-hand structure of the heat exchanger unit of the present invention.
In the accompanying drawings: 100-air supply unit; 110-a first box; 111-a first mounting cavity; 1111—a first air inlet; 1112-a first exhaust outlet; 112-an evaporator; 113-nuclear grade electric heater; 114-a drip tray; 120-a first mounting bracket; 121-a first bottom frame; 130-fan mounting rack; 140-a damper; 151-a first nuclear grade fan; 152-a first fan housing; 153-first wind wheel;
200-heat exchange unit; 210-a second mounting bracket; 220-a condenser; 230-a compressor; 240-a second body; 241-a second mounting cavity; 2411-a second air inlet; 250-reinforcing pull plates; 261-a second nuclear grade motor; 262-a second fan housing; 263-a second impeller; 270-a gas-liquid separator;
300-expansion valve group; 310-expansion valve body.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is not quantitative, and the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In addition, three parallel schemes are presented and/or represented throughout, e.g., a and/or B represent a scheme that is met by a, a scheme that is met by B, or a scheme that is met by a and B simultaneously.
In the description of the invention, there are phrases containing a plurality of parallel features, where the phrase defines a feature that is closest, for example: b, C provided on A, E connected with D, which means that B is provided on A, E connected with D, and C is not limited; but for the words representing the relationship between features, such as "spaced arrangement", "annular arrangement", etc., do not belong to this category. The phrase preceded by a "homonym" indicates that all features in the phrase are defined, e.g., B, C, D, all disposed on a, and B, C and D are disposed on a.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 5, a nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third generation nuclear power plant includes: a blower unit 100, a heat exchange unit 200, and an expansion valve group 300, the blower unit 100 including: a first body, a fan mount 130, and a first nuclear grade fan 151;
the first main body is fixedly arranged, the first main body comprises a first mounting bracket 120 and a first box body 110, the first box body 110 is mounted in the first mounting bracket 120, the first mounting bracket 120 is a structural steel member, a mounting cavity is arranged in the first box body 110, a first air inlet 1111 and a first air outlet 1112 are arranged on the mounting cavity, an evaporator 112 is arranged on the lower side of the mounting cavity, the evaporator 112 is positioned beside the first air inlet 1111, and the first mounting bracket 120 comprises a first bottom frame 121 formed in the middle of the mounting cavity;
the fan mounting frame 130 is fixedly connected with the first main body, the fan mounting frame 130 is located above the evaporator 112, a damper 140 is arranged on the lower side of the fan mounting frame 130, and the fan mounting frame 130 is connected with the first bottom frame 121 through the damper 140;
the first nuclear-grade fan 151 is located in the installation cavity, a first air inlet and a first air outlet are formed in the first nuclear-grade fan 151, the first air inlet is located in the installation cavity, and the first air outlet is communicated with the first air outlet 1112;
the first air blower unit 100 is generally installed in an indoor environment where temperature and humidity adjustment is required to ensure the cold output efficiency of the air blower unit 100, the walls of the first box 110 may be concrete, brick, metal plate, etc., and when the air humidity needs to be reduced, one of the alternative methods is to set a nuclear-grade electric heater 113 on the side of the evaporator 112 facing away from the first air inlet 1111, and dry the gas near the evaporator 112 by starting the nuclear-grade electric heater 113;
the heat exchanger unit 200 includes: the second installation support 210, the condenser 220, the compressor 230 and the second nuclear-grade fan are fixedly arranged, the condenser 220, the compressor 230 and the second nuclear-grade fan are fixedly connected with the second installation support 210, the second nuclear-grade fan comprises a second air inlet and a second air outlet, and the second air inlet or the second air outlet is arranged towards the condenser 220;
the expansion valve group 300 includes an expansion valve body 310, and the condenser 220, the compressor 230, the evaporator 112, and the expansion valve body 310 form a heat exchange circuit. The expansion valve set 300 specifically further includes a connection pipe, which plays a role of a series heat exchange circuit, and in this embodiment, the expansion valve body 310 is fixed outside the first mounting bracket 120, and is reinforced by a clip and a screw.
When the anti-seismic direct expansion air conditioning unit of the plant factory building of the third-generation nuclear power station is used, the second mounting bracket 210, the condenser 220, the compressor 230, the second nuclear-level fan, the first nuclear-level fan 151 and the expansion valve body 310 jointly form a heat exchange loop, and cold energy generated by the heat exchange loop is transmitted into the mounting cavity through the evaporator 112 and is discharged outwards through the first nuclear-level fan 151 so as to control the ambient temperature; compared with the prior art, the nuclear-grade anti-seismic direct expansion air conditioning unit of the diesel engine factory building of the third-generation nuclear power station is provided with the first box body 110 and the first mounting bracket 120, and the first mounting bracket 120 is made of structural steel, so that the anti-seismic performance of the air conditioning unit is greatly enhanced, and the fan mounting bracket 130 is connected with the first main body through the shock absorber 140 to further provide the anti-seismic performance of the first nuclear-grade fan 151;
in addition, the novel installation mode that the fan installation frame 130 is fixedly connected to the middle of the installation cavity through the first bottom frame 121 is adopted, the first bottom frame 121 and the side wall of the first main body play a role in absorbing part of transverse vibration and longitudinal vibration, so that the anti-seismic performance of the air conditioning unit is effectively improved.
In this embodiment, the first air inlet 1111 is horizontally disposed forward, the first air outlet 1112 is also horizontally disposed forward, and when the first nuclear fan 151 is in operation, the wind loads generated at the first air inlet 1111 and the second air outlet are opposite in direction, which can play a role in improving the complexity of vibration in the horizontal direction when an earthquake occurs, and further reduce the influence of resonance. The first mounting bracket 120 is connected with the external wall body through expansion screws, and the first box 110 is fixedly connected with the first mounting bracket 120 through screws.
Specifically, the damper 140 is a wire rope damper. The number of the dampers 140 is four, namely, a first damper, a second damper, a third damper and a fourth damper, the first damper, the second damper, the third damper and the fourth damper are all located between the fan mounting frame 130 and the first bottom frame 121, the first damper, the second damper, the third damper and the fourth damper are respectively arranged on the left side, the front side, the right side and the rear side of the first bottom frame 121, projections of the first damper and the third damper on a plane extending along the front-rear direction are not overlapped, and projections of the second damper and the fourth damper on a plane extending along the left-right direction are not overlapped. The wire rope damper 140 has good multidirectional damping performance, nonlinear rigidity and nonlinear damping characteristics, and is strong in environmental adaptability, long in service life, various in installation mode, large in damping and convenient to install. Because the wire rope damper 140 has nonlinear rigidity and nonlinear damping characteristics, the first damper, the second damper, the third damper and the fourth damper adopt an asymmetric structural arrangement mode, and when the first damper, the second damper, the third damper and the fourth damper vibrate under stress, a plurality of stress vibration sources with different frequencies and amplitudes are formed, so that the complexity of the system in a vibration state is improved, and the probability of damage caused by resonance is reduced.
Specifically, the first nuclear-grade fan 151 includes a first nuclear-grade motor, a first fan housing 152 and a first wind wheel 153, the first fan housing 152 and the first nuclear-grade motor are all fixedly connected on the fan mounting rack 130, the first fan housing 152 is a stainless steel member, the first air inlet and the first air outlet are all formed on the first fan housing 152, and the first wind wheel 153 is in driving connection with the first nuclear-grade motor. The first air inlet and the first outlet form a first ventilation channel in the first fan housing 152, and the first fan housing 152 is set to be a stainless steel member, so that the corrosion rate of moisture in the first ventilation channel to the first fan housing 152 is reduced, and the structural strength of the first fan housing 152 is ensured. In this embodiment the first nuclear motor is in driving connection with the first wind wheel 153 by means of a belt drive.
Further, a resistive muffler is further disposed at the first exhaust outlet 1112, and the first air outlet is communicated with the first exhaust outlet 1112 through the resistive muffler. Through setting up resistive muffler, be favorable to reducing the noise of first air outlet department.
Further, a drip tray 114 is further disposed in the first mounting cavity 111, the drip tray 114 is a heat insulation material member, the drip tray 114 is located below the evaporator 112, and the drip tray 114 is fixedly connected with the first main body. By providing a drip tray 114 for receiving water dripping from the surface of the condenser 220; the heat-insulating material can be foam, plastic, foamed plastic, concrete, etc., and the drip tray 114 is a heat-insulating material member, which is beneficial to maintaining the temperature in the installation cavity and improving the energy efficiency of the air conditioning unit. The bottom of the drip tray 114 is also provided with a drain pipe on which a solenoid valve is provided to periodically drain the water accumulated in the drip tray 114.
Specifically, the heat exchange unit 200 further includes a second main body 240, the second main body 240 is fixedly connected to the upper side of the second mounting bracket 210, a second mounting cavity 241 is provided in the second main body 240, a second air inlet 2411 and a second air outlet are provided on the second mounting cavity 241, the second air outlet is provided on the upper side of the second mounting cavity 241, the compressor 230 and the condenser 220 are both located in the second mounting cavity 241, and the condenser 220 is provided beside the second air inlet 2411; the second nuclear-grade fan is installed the upside of second main part 240, the second nuclear-grade fan is along vertical arrangement, the second nuclear-grade fan includes second air intake and second air outlet, the second air intake with second air exit intercommunication, the second air outlet intercommunication is external. The second nuclear level fan is used for promoting the air flow in the second installation cavity 241, and compressor and condenser 220 all are located the second installation cavity 241, are favorable to the second nuclear level fan to dispel the heat both simultaneously, and in addition, the second nuclear level fan sets up in the top of installation cavity and along vertical arrangement, is favorable to reducing the occupation in horizontal space on the one hand, on the other hand, and it is connected through first main part with compressor 230, and the amplitude, the frequency of two vibration sources of compressor 230 and second nuclear level fan are all inconsistent, are difficult for arousing resonance when taking place the earthquake.
Specifically, the second core stage fan is an axial flow fan, the second core stage fan includes a second fan housing 262, a second core stage motor 261 and a second impeller 263, the second core stage motor 261 is in driving connection with the second impeller 263, the second fan housing 262 is a tubular member, a second air inlet 2411 is formed at the lower side of the second fan housing 262, a second air outlet is formed at the upper side of the second fan housing 262, and the second core stage fan is installed in the second fan housing 262. The second nuclear-grade fan adopts the axial fan to have the characteristic of strong through-flow capacity, and is more favorable for the condenser 220 to dissipate heat rapidly.
Specifically, the heat exchanger unit 200 further includes a reinforcing pull plate 250, the reinforcing pull plate 250 is located on the upper side of the second fan housing 262, the lower side of the reinforcing pull plate 250 is fixedly connected with the second fan housing 262, and the reinforcing pull plate 250 extends out of the second fan housing 262 along the transverse direction. When the heat exchanger set is used, the reinforcing pull plate 250 is connected with the peripheral wall body through expansion bolts, and the strength of the upper part of the heat exchanger set 200 is enhanced through the reinforcing pull plate 250. In this embodiment, the reinforcing pull plate 250 includes a plurality of plates connected together by screws, and in other embodiments, the reinforcing pull plate 250 may be one or more plates and connected to the wall by means of connection codes, expansion screws, etc.
In addition, in the heat exchange circuit, a gas-liquid separator 270 is also provided, and the gas-liquid separator 270 is installed in the second installation chamber 241.
While the preferred embodiment of the present invention has been described in detail, the invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention, and these equivalent modifications and substitutions are intended to be included in the scope of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a nuclear level antidetonation formula air conditioning unit that directly expands of third generation nuclear power station diesel engine factory building, its characterized in that: comprising the following steps:
an air blower unit (100), the air blower unit (100) comprising:
the first main body is fixedly arranged and comprises a first mounting bracket (120) and a first box body (110), the first box body (110) is mounted in the first mounting bracket (120), the first mounting bracket (120) is a structural steel member, a mounting cavity is formed in the first box body (110), a first air inlet (1111) and a first air outlet (1112) are formed in the mounting cavity, an evaporator (112) is arranged on the lower side of the mounting cavity, the evaporator (112) is located beside the first air inlet (1111), and the first mounting bracket (120) comprises a first bottom frame (121) formed in the middle of the mounting cavity;
the fan installation frame (130), fan installation frame (130) with first main part rigid coupling, fan installation frame (130) are located the top of evaporimeter (112), the downside of fan installation frame (130) is provided with bumper shock absorber (140), fan installation frame (130) pass through bumper shock absorber (140) with first underframe (121) is connected;
the first nuclear-grade fan (151), the first nuclear-grade fan (151) is located in the installation cavity, a first air inlet and a first air outlet are formed in the first nuclear-grade fan (151), the first air inlet is located in the installation cavity, and the first air outlet is communicated with the first air outlet (1112);
a heat exchange unit (200), the heat exchange unit (200) comprising: the device comprises a second mounting bracket (210), a condenser (220), a compressor (230) and a second nuclear-grade fan, wherein the second mounting bracket (210) is fixedly arranged, the condenser (220), the compressor (230) and the second nuclear-grade fan are fixedly connected with the second mounting bracket (210), the second nuclear-grade fan comprises a second air inlet and a second air outlet, and the second air inlet or the second air outlet is arranged towards the condenser (220);
an expansion valve group (300), wherein the expansion valve group (300) comprises an expansion valve body (310), and the condenser (220), the compressor (230), the evaporator (112) and the expansion valve body (310) form a heat exchange loop;
the shock absorber (140) is a steel wire rope shock absorber;
the number of the dampers (140) is four, namely a first damper, a second damper, a third damper and a fourth damper, the first damper, the second damper, the third damper and the fourth damper are all positioned between the fan mounting frame (130) and the first bottom frame (121), the first damper, the second damper, the third damper and the fourth damper are respectively arranged at the left side, the front side, the right side and the rear side of the first bottom frame (121), projections of the first damper and the third damper on a plane extending along the front-rear direction are not overlapped with each other, and projections of the second damper and the fourth damper on a plane extending along the left-right direction are not overlapped with each other;
the heat exchange unit (200) further comprises a second main body (240), the second main body (240) is fixedly connected to the upper side of the second mounting bracket (210), a second mounting cavity (241) is arranged in the second main body (240), a second air inlet (2411) and a second air outlet are arranged on the second mounting cavity (241), the second air outlet is arranged on the upper side of the second mounting cavity (241), the compressor (230) and the condenser (220) are both positioned in the second mounting cavity (241), and the condenser (220) is arranged beside the second air inlet (2411); the second nuclear-grade fan is installed the upside of second main part (240), the second nuclear-grade fan is along vertical arrangement, the second nuclear-grade fan includes second air intake and second air outlet, the second air intake with second air exit intercommunication, the second air outlet intercommunication is external.
2. The nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third generation nuclear power plant according to claim 1, wherein: the first nuclear level fan (151) comprises a first nuclear level motor, a first fan housing (152) and a first wind wheel (153), the first fan housing (152) and the first nuclear level motor are fixedly connected to the fan mounting frame (130), the first fan housing (152) is a stainless steel member, the first air inlet and the first air outlet are formed in the first fan housing (152), and the first wind wheel (153) is connected with the first nuclear level motor in a driving mode.
3. The nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third generation nuclear power plant according to claim 1, wherein: the first air outlet (1112) is also provided with a resistive muffler, and the first air outlet is communicated with the first air outlet (1112) through the resistive muffler.
4. The nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third generation nuclear power plant according to claim 1, wherein: the first mounting cavity (111) is internally provided with a water dripping disc (114), the water dripping disc (114) is a heat insulation material component, the water dripping disc (114) is positioned below the evaporator (112), and the water dripping disc (114) is fixedly connected with the first main body.
5. The nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third generation nuclear power plant according to claim 1, wherein: the second nuclear level fan is axial fan, the second nuclear level fan includes second fan shell (262), second nuclear level motor (261) and second impeller (263), second nuclear level motor (261) with second impeller (263) drive connection, second fan shell (262) are tubular component, second air inlet (2411) forms the downside of second fan shell (262), the second air outlet forms the upside of second fan shell (262), second nuclear level fan is installed in second fan shell (262).
6. The nuclear-grade anti-seismic direct expansion air conditioning unit of a diesel engine plant of a third generation nuclear power plant of claim 5, wherein: the heat exchange unit (200) further comprises a reinforcing pull plate (250), the reinforcing pull plate (250) is located on the upper side of the second fan housing (262), the lower side of the reinforcing pull plate (250) is fixedly connected with the second fan housing (262), and the reinforcing pull plate (250) transversely extends out of the second fan housing (262).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635153.9A CN111854009B (en) | 2020-07-03 | 2020-07-03 | Anti-seismic direct expansion air conditioning unit for plant building level of diesel engine of third-generation nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010635153.9A CN111854009B (en) | 2020-07-03 | 2020-07-03 | Anti-seismic direct expansion air conditioning unit for plant building level of diesel engine of third-generation nuclear power station |
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| CN111854009B true CN111854009B (en) | 2024-03-19 |
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| CN204987331U (en) * | 2015-09-02 | 2016-01-20 | 南方风机股份有限公司 | Dismantled and assembled, low nuclear level cooling unit that vibrates |
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| CN111854009A (en) | 2020-10-30 |
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