CN116025967A - Nuclear grade primary return air type double-layer combined air conditioning unit for nuclear power station - Google Patents
Nuclear grade primary return air type double-layer combined air conditioning unit for nuclear power station Download PDFInfo
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Abstract
The invention relates to the technical field of ventilation air conditioning systems of nuclear power stations, in particular to a nuclear-grade primary return air type double-layer combined air conditioning unit for a nuclear power station. The nuclear-level primary air return type double-layer combined air conditioning unit for the nuclear power station comprises an installation machine body and an upper layer of air conditioning unit and a lower layer of air conditioning unit which are arranged in the installation machine body, wherein the air conditioning unit is sequentially divided into a filtering function section, a cooling function section, a humidifying function section and an air supply function section from left to right, and the rear sides of the filtering function section, the cooling function section and the humidifying function section are provided with an exhaust function section; the installation organism includes base, frame and polylith panel, the frame install in the base. Nuclear level primary return air type double-layer combined air conditioning unit for nuclear power station has strong shock resistance, low overall vibration, reasonable arrangement of each functional section, good running stability, safe and reliable running, and solves the problems of complex arrangement of equipment, poor shock resistance and poor use safety in the existing double-layer air conditioning unit for nuclear power station.
Description
Technical Field
The invention relates to the technical field of ventilation air conditioning systems of nuclear power stations, in particular to a nuclear-grade primary return air type double-layer combined air conditioning unit for a nuclear power station.
Background
The double-layer air conditioning unit installed in the ventilation air conditioning system of the nuclear power station at present mainly meets the requirements of environmental temperature and humidity and manufacturability in the ventilation air conditioning System (SAC) of a nuclear island control factory building of the nuclear power station, ensures the environmental conditions required by the operation of the SAC ventilation air conditioning system equipment and the environmental conditions allowing workers to enter and exit, and maintains the temperature and humidity conditions in the factory building of the SAC system. Has important function for further improving the temperature and humidity of the ventilation air conditioning system. In view of the fact that the SAC ventilation air conditioning system and corresponding rooms of the nuclear power station are limited in installation space for equipment, however, the air quantity, the cold quantity and the pressure head of the unit are large, the arrangement of pipelines of the ventilation system is complex, the flow rate in the system is large, the flow speed is high, the resistance generated in the system is also large, and the SAC system is required to maintain a relevant air conditioning function under accident conditions such as earthquake accident environments, namely the double-layer air conditioning unit is required to be started up by equipment on the upper layer and the lower layer under the earthquake accident environment conditions, and the integral function of the unit is realized. In order to meet the above related requirements, it is necessary to provide air conditioning units with higher shock resistance, and at the same time, the air conditioning units are installed in a nuclear power plant, which puts higher demands on service life, operation stability, safety performance and shock resistance of the air conditioning units.
Disclosure of Invention
Aiming at the problems of the background technology, the invention aims to provide a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power station, which has the advantages of strong shock resistance, low overall vibration, reasonable arrangement of each functional section, good running stability, safe and reliable running, effectively meets the requirements of environment temperature and humidity and use comfort in a SAC ventilation air conditioning system of the nuclear power station, and solves the problems of complex equipment arrangement, poor shock resistance and poor use safety in the conventional double-layer air conditioning unit of the nuclear power station.
To achieve the purpose, the invention adopts the following technical scheme:
the nuclear-level primary air return type double-layer combined air conditioning unit for the nuclear power station comprises an installation machine body and an upper layer of air conditioning unit and a lower layer of air conditioning unit which are arranged in the installation machine body, wherein the air conditioning unit is sequentially divided into a filtering function section, a cooling function section, a humidifying function section and an air supply function section from left to right, and the rear sides of the filtering function section, the cooling function section and the humidifying function section are provided with an exhaust function section;
the mounting machine body comprises a base, a frame and a plurality of panels, wherein the frame is mounted on the base, the panels are mounted on the frame, and the base and the frame are respectively of an integral welding forming structure;
the installation machine body is provided with a fresh air inlet at the left end of the filtering functional section, and is provided with a filter assembly for filtering fresh air;
the installation machine body is provided with a cooler in the cooling functional section, the cooler is used for cooling the filtered fresh air, the installation machine body is provided with a wet film humidifier in the humidifying functional section, and the wet film humidifier is used for humidifying the cooled fresh air;
the installation machine body is provided with an air supply port at the front end of the air supply functional section, the installation machine body is provided with an air feeder at the air supply functional section, the air inlet end of the air feeder is arranged towards the humidifying functional section, and the air outlet end of the air feeder is arranged towards the air supply port;
the installation organism in the functional section of airing exhaust is equipped with the exhaust chamber and the return air chamber that communicate in proper order along left and right directions and set up, the installation organism in the rear end of exhaust chamber is equipped with the air outlet, the installation organism in the front end of exhaust chamber is equipped with first return air inlet, the installation organism in the rear end of filtering functional section be equipped with the second return air inlet that first return air inlet corresponds the setting, the second return air inlet is located filter assembly's left side, the installation organism in the rear end of return air chamber is equipped with the third return air inlet, be equipped with the exhaust fan in the return air chamber, the air inlet end orientation of exhaust fan the setting of third return air inlet, the air outlet orientation of exhaust fan the exhaust chamber sets up.
Further described, the base includes a base cross beam, a base vertical beam, and a base reinforcing beam;
the base beams are arranged at intervals along the left-right direction, the base vertical beams are arranged at intervals along the front-back direction, the base reinforcing beams are arranged at intervals along the front-back direction or the left-right direction, the base vertical beams are connected between two adjacent base beams, the base reinforcing beams are connected between two adjacent base beams, or the base reinforcing beams are connected between two adjacent base vertical beams;
and the base cross beam, the base vertical beam and the base reinforcing beam are integrally welded and formed.
Still further, the frame includes a cross frame beam, a mullion beam, a spacer beam, a walking beam, and a raker beam;
the transverse frame beams are arranged at intervals along the left-right direction, the vertical frame beams are arranged at intervals along the up-down direction, the spacing beams and the movable beams are respectively arranged at intervals along the left-right direction or along the up-down direction, the diagonal bracing beams are obliquely arranged between the movable beams and the transverse frame beams, the vertical frame beams are connected between two adjacent transverse frame beams, the spacing beams are connected between two adjacent transverse frame beams or between two adjacent vertical frame beams, and the movable beams are detachably arranged between two adjacent transverse frame beams;
and the transverse frame beams, the vertical frame beams and the spacing beams are integrally welded and formed.
Still further, the panel includes an inner panel, an outer panel, and a foam layer, the outer panel is mounted to the frame, the inner panel is disposed facing an inner side of the frame, the outer panel is disposed facing an outer side of the frame, and the foam layer is filled between the inner panel and the outer panel.
Further stated, the filter assembly includes an installation bent, a primary filter and a high efficiency filter, the primary filter and the high efficiency filter being respectively mounted at intervals on the left and right sides of the installation bent.
The installation bent frame comprises a first installation frame, an installation frame and a second installation frame, wherein the first installation frame and the second installation frame are respectively installed on the left side and the right side of the installation frame, the primary filter is installed on the left side of the first installation frame, the efficient filter is installed on the right side of the second installation frame, ventilation cavities for air flow to pass through are respectively formed in the middle parts of the first installation frame, the installation frame and the second installation frame, and the ventilation cavities of the first installation frame, the installation frame and the second installation frame are communicated;
the high-efficiency filter is formed by splicing frame filters.
Further described, the cooler includes a cooler frame, a water inlet header, a water outlet header, a water inlet heat exchange tube, and a water outlet heat exchange tube;
the cooler frame comprises a connecting frame plate and a pipe body mounting plate, wherein the connecting frame plate is arranged at intervals along the up-down direction, the pipe body mounting plate is arranged at intervals along the front-back direction, the pipe body mounting plate is detachably arranged between the two connecting frame plates, the water inlet collecting pipe and the water outlet collecting pipe are respectively arranged at one side of the connecting frame plate, the water inlet heat exchange pipe and the water outlet heat exchange pipe are respectively arranged between the pipe body mounting plates, and the water inlet heat exchange pipe and the water outlet heat exchange pipe penetrate through the pipe body mounting plates;
the water inlet end of the water inlet heat exchange tube is communicated with the water outlet end of the water inlet collecting pipe, the water outlet end of the water inlet heat exchange tube is communicated with the water inlet end of the water outlet heat exchange tube, and the water outlet end of the water outlet heat exchange tube is communicated with the water inlet end of the water outlet collecting pipe;
the water inlet collecting pipe is provided with a water inlet, the water outlet collecting pipe is provided with a water outlet, and the water inlet of the water inlet collecting pipe is arranged below the water outlet of the water outlet collecting pipe.
Further described, the wet film humidifier comprises a humidifier frame, a Y-shaped filter, a water spraying device, a water inlet pipe and a wet film module;
the water spraying device and the wet film module are respectively arranged on the humidifier frame, the water outlet end of the Y-shaped filter is connected with the water inlet end of the water inlet pipe, the water outlet end of the water inlet pipe is connected with the water inlet end of the water spraying device, the water outlet end of the water spraying device faces the wet film module, and the water spraying device is used for spraying the wet film module.
Further, the air inlet valve is arranged at the fresh air inlet of the installation machine body, the air exhaust valve is arranged at the air outlet of the installation machine body, the first air return valve is arranged at the first air return opening of the installation machine body, and the second air return valve is arranged at the third air return opening of the installation machine body.
Further described, the air inlet valve is an electrically heated valve.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
through adopting integrative welded structure with base and frame for the sound construction of installation organism, shock resistance is strong, guarantees the installation stability of each equipment in filtering function section, cooling function section, humidification function section, air supply function section and the function section of airing exhaust, makes nuclear level once return air type double-deck combination air conditioning unit's for the nuclear power station whole vibration low. In addition, through the rational arrangement to each position of filtering function section, cooling function section, humidification function section, air supply function section and exhaust function section for nuclear level once return air type double-deck combination air conditioning unit for nuclear power station can realize filtration, cooling, humidification and the air supply of new trend to and realize the mixture of return air and new trend, can play energy-conserving effect in summer, and running stability is good, and operation safe and reliable has effectively reached the environment humiture and the requirement of using the travelling comfort in the SAC ventilation air conditioning system of nuclear power station, has solved the equipment arrangement complicacy, the shock resistance is poor, the problem that the safety in utilization is poor in current nuclear power station double-deck air conditioning unit.
Drawings
Fig. 1 is a schematic perspective view of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power station according to an embodiment of the present invention;
fig. 2 is a schematic front view of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 3 is a schematic top view of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 4 is a schematic left-view structural diagram of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of a base of an installation body of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 6 is a schematic perspective view illustrating a frame of an installation body of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a panel of an installation body of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional structural view of section A-A of FIG. 7;
fig. 9 is a schematic perspective view of a filter assembly of a nuclear grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 10 is a schematic perspective view of a cooler of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
FIG. 11 is a schematic left view of a wet film humidifier of a nuclear grade primary return air type double layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 12 is a schematic partial structure diagram of a front view of a wet film humidifier of a nuclear grade primary air return type double layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 13 is a schematic perspective view of an air supply function section of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
fig. 14 is a schematic perspective view of an exhaust function section of a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
FIG. 15 is a schematic left-view structural diagram of a return air chamber of an exhaust function section of a nuclear-grade primary return air type double-layer combined air conditioning unit for a nuclear power plant according to an embodiment of the present invention;
in the accompanying drawings: the installation body 1, the base 11, the base cross member 111, the base vertical beam 112, the base reinforcement beam 113, the frame 12, the cross frame beam 121, the vertical frame beam 122, the spacer beam 123, the movable beam 124, the diagonal beam 125, the panel 13, the inner panel 131, the outer panel 132, the foam layer 133, the silica gel 134, the air conditioning unit 2, the filter function section 3, the fresh air inlet 31, the air inlet valve 311, the filter assembly 32, the installation frame 321, the first installation frame 3211, the installation frame 3212, the second installation frame 3213, the primary filter 322, the high efficiency filter 323, the second air return 33, the cooling function section 4, the cooler 41, the cooler frame 411, the connection frame plate 4111, the tube body installation plate 4112, the inlet header 412, the water inlet 4121, the outlet header 413, the water outlet 4131, the inlet heat exchange tube 414, the outlet heat exchange tube 415, the humidification function section 5, the wet film humidifier 51, the humidifier frame 511, the Y-type filter 512, the filter 513, the water inlet tube 514, the wet film module, the air supply function section 6, the air supply 61, 62, the air outlet chamber 7, the air outlet chamber 71, the first air outlet valve 7211, the air return 7272, the air outlet 7111, the air return 7272, the third air outlet valve 7111, the air return 7272.
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 the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present invention, unless otherwise indicated, the meaning of "plurality" is two or more.
As shown in fig. 1 to 4, a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power plant comprises an installation machine body 1 and an upper layer air conditioning unit 2 and a lower layer air conditioning unit 2 which are arranged in the installation machine body 1, wherein the air conditioning unit 2 is sequentially divided into a filtering functional section 3, a cooling functional section 4, a humidifying functional section 5 and an air supply functional section 6 from left to right, and the rear sides of the filtering functional section 3, the cooling functional section 4 and the humidifying functional section 5 are provided with an air exhaust functional section 7;
the mounting machine body 1 comprises a base 11, a frame 12 and a plurality of panels 13, wherein the frame 12 is mounted on the base 11, the panels 13 are mounted on the frame 12, and the base 11 and the frame 12 are respectively in an integral welding forming structure;
the installation machine body 1 is provided with a fresh air inlet 31 at the left end of the filtering function section 3, the installation machine body 1 is provided with a filter assembly 32 at the filtering function section 3, and the filter assembly 32 is used for filtering fresh air;
the installation machine body 1 is provided with a cooler 41 in the cooling functional section 4, the cooler 41 is used for cooling the filtered fresh air, the installation machine body 1 is provided with a wet film humidifier 51 in the humidifying functional section 5, and the wet film humidifier 51 is used for humidifying the cooled fresh air;
an air supply port 61 is formed in the front end of the air supply functional section 6 of the installation machine body 1, an air blower 62 is installed in the air supply functional section 6 of the installation machine body 1, the air inlet end of the air blower 62 is arranged towards the humidifying functional section 5, and the air outlet end of the air blower 62 is arranged towards the air supply port 61;
the installation organism 1 in the exhaust function section 7 is equipped with the exhaust chamber 71 and the return air chamber 72 that communicate in proper order along left and right directions and set up, the installation organism 1 in the rear end of exhaust chamber 71 is equipped with air outlet 711, the installation organism 1 in the front end of exhaust chamber 71 is equipped with first return air inlet 712, the installation organism 1 in the rear end of filtering function section 3 be equipped with the corresponding second return air inlet 33 that sets up of first return air inlet 712, second return air inlet 33 is located the left side of filter assembly 32, the installation organism 1 in the rear end of return air chamber 72 is equipped with third return air inlet 721, be equipped with exhaust fan 711 in the return air chamber 72, the air inlet end of exhaust fan is towards third return air inlet 721 sets up, the air outlet of exhaust fan 711 is towards exhaust chamber 71 sets up.
The invention relates to a nuclear-grade primary air return type double-layer combined air conditioning unit for a nuclear power station, which has the following working principle:
fresh air enters from the fresh air port 31, is filtered by the filter assembly 32 of the filter function section 3, is cooled by the cooling function section 4, is humidified by the wet film humidifier 51 of the humidification function section 5, and is finally supplied by the blower 62 of the air supply function section 6. In summer, because the outdoor fresh air has a large heat load, a mode of 'fresh air and return air mixing' is needed. Indoor return air is sucked from the third return air inlet 721 through an exhaust fan 722 in the return air chamber 72 of the exhaust function section 7, part of the return air is discharged to the outside through the exhaust air inlet 711 according to the fresh air and return air proportion adjustment requirements of different temperatures, the other part of the return air enters the filter function section 3 through the first return air inlet 712 and the second return air inlet 33, the return air is filtered through the filter function section 3 after being mixed with the fresh air, the mixed air is humidified through the humidifying function section 5 after being cooled through the cooling function section 4, and finally the air is supplied through the air blower 62.
In the invention, the base 11 and the frame 12 are respectively integrally welded, so that the installation machine body 1 has a firm structure and strong shock resistance, and the installation stability of each device in the filtering function section 3, the cooling function section 4, the humidifying function section 5, the air supply function section 6 and the air exhaust function section 7 is ensured, so that the nuclear-level primary air return type double-layer combined air conditioning unit for the nuclear power station has low integral vibration. In addition, through to filter function section 3, cooling function section 4, humidification function section 5, air supply function section 6 and the rational arrangement of function section 7 position of airing exhaust for nuclear level once return air type double-deck combination air conditioning unit for nuclear power station can realize the filtration, cooling, humidification and the air supply of new trend to and realize the mixing of return air and new trend, can play energy-conserving effect in summer, and operational stability is good, and operation safe and reliable has effectively reached the environment humiture and the requirement of using the travelling comfort in the SAC ventilation air conditioning system of nuclear power station, has solved the equipment arrangement complicacy in the current nuclear power station double-deck air conditioning unit, the shock resistance is poor, the problem that the safety in utilization is poor.
The nuclear-grade primary return air type double-layer combined air conditioning unit for the nuclear power station is arranged on a SAC ventilation air conditioning system of the nuclear power station, the SAC ventilation air conditioning system and corresponding rooms in a nuclear island are limited in installation space for equipment, but the air quantity, the cold quantity and the pressure head of the unit are large, the pipeline arrangement of the ventilation system is complex, the flow rate in the system is large, the flow rate is high, the resistance generated in the system is also large, the SAC system is required to still maintain a relevant air conditioning function under accident conditions such as earthquake accident conditions, namely, the double-layer air conditioning unit is required to be started up and realize the integral function of the unit under the earthquake accident conditions, and the indoor environment temperature and humidity level of a factory building relevant to the SAC system of the nuclear island are improved. And (3) carrying out integral anti-seismic calculation on the air conditioning unit equipment body by using a method for analyzing the earthquake floor reaction spectrum, and carrying out anti-seismic test verification on the air supply functional section and the air exhaust functional section. The functional earthquake-proof requirement of the factory building and the floor position of the equipment in the nuclear island is met; after the device is connected with the system anti-seismic pipeline, the natural frequency of the device is higher, the rigidity is higher, the system pipeline with anti-seismic requirement is reinforced to a certain extent, and the anti-seismic effect of the whole ventilation air conditioning system is more facilitated.
As shown in fig. 5, further illustration, the base 11 includes a base cross member 111, a base vertical member 112, and a base reinforcing member 113;
the base cross beams 111 are arranged at intervals in the left-right direction, the base vertical beams 112 are arranged at intervals in the front-rear direction, the base reinforcing beams 113 are arranged at intervals in the front-rear direction or in the left-right direction, the base vertical beams 112 are connected between two adjacent base cross beams 111, the base reinforcing beams 113 are connected between two adjacent base cross beams 111, or the base reinforcing beams 113 are connected between two adjacent base vertical beams 112;
the base cross beam 111, the base vertical beam 112 and the base reinforcing beam 113 are integrally welded and formed.
Through setting up base crossbeam 111, base erect roof beam 112 and base reinforcing beam 113, the three integrated into one piece welding formation becomes firm base structure, specifically, base crossbeam 111 adopts H shaped steel base erect roof beam 112 and adopts the channel-section steel, in view of base 11 adopts shaped steel integrated into one piece welding formation for the structure of installation organism 1 is firm, and shock resistance is strong, guarantees the installation stability of each equipment in filtering function section 3, cooling function section 4, humidification function section 5, air supply function section 6 and the functional section 7 of airing exhaust makes nuclear level once return air type double-deck combination air conditioning unit's for the nuclear power station whole vibration is low.
As shown in fig. 6, further illustration, the frame 12 includes cross frame beams 121, mullion beams 122, spacer beams 123, walking beams 124, and diagonal beams 125;
the transverse frame beams 121 are arranged at intervals in the left-right direction, the vertical frame beams 122 are arranged at intervals in the up-down direction, the spacing beams 123 and the movable beams 124 are respectively arranged at intervals in the left-right direction or in the up-down direction, the diagonal bracing beams 125 are obliquely arranged between the movable beams 124 and the transverse frame beams 121, the vertical frame beams 122 are connected between two adjacent transverse frame beams 121, the spacing beams 123 are connected between two adjacent transverse frame beams 121 or between two adjacent vertical frame beams 122, and the movable beams 124 are detachably arranged between two adjacent transverse frame beams 121;
the cross frame beams 121, the mullion beams 122 and the spacer beams 123 are integrally welded and formed.
Through setting up horizontal frame roof beam 121, mullion roof beam 122, spacing roof beam 123, fly beam 124 and bracing roof beam 125, horizontal frame roof beam 121, mullion roof beam 122 and spacing roof beam 123 integrated into one piece welded formation become firm frame construction, fly beam 124 detachably installs in adjacent two between the horizontal frame roof beam 121, make things convenient for the dismouting to the convenience is right equipment in the installation organism 1 overhauls, bracing roof beam 125 can consolidate fly beam 124 guarantees the installation stability of fly beam 124, specifically, horizontal frame roof beam 121 with mullion roof beam 122 all adopts the angle steel, spacing roof beam 123 adopts the channel-section steel, horizontal frame roof beam 121 mullion roof beam 122 with spacing roof beam 123 all adopts heavy structural steel to wholly welded formation, fly beam 124 adopts bolt and frame bulk connection. In view of the fact that the frame 12 is integrally welded and formed by steel sections, the installation machine body 1 is firm in structure and high in shock resistance, installation stability of all the devices in the filtering function section 3, the cooling function section 4, the humidifying function section 5, the air supply function section 6 and the air exhaust function section 7 is guaranteed, and integral vibration of the nuclear-level primary air return type double-layer combined air conditioning unit for the nuclear power station is low.
In addition, in view of the fact that the nuclear-grade primary air return type double-layer combined air conditioning unit for the nuclear power station is nuclear-grade equipment for the nuclear power station and needs to have an anti-earthquake effect, the integral rigidity of the frame of the unit is increased in structural design to achieve the anti-earthquake effect, and the related earthquake load requirements are met. The angle steel and channel steel structures are adopted, so that the diagonal bracing structure is added, and the earthquake resistance effect of the whole frame of the unit is greatly improved.
As shown in fig. 7 and 8, further description, the panel 13 includes an inner panel 131, an outer panel 132, and a foaming layer 133, the outer panel 132 is mounted on the frame 12, the inner panel 131 is disposed facing the inner side of the frame 12, the outer panel 132 is disposed facing the outer side of the frame 12, and the foaming layer 133 is filled between the inner panel 131 and the outer panel 132.
Through setting up inner panel 131, outer panel 132 and foaming layer 133, the design of inner and outer panel can prevent cold bridge effect (prevent that the inside cold volume of unit from passing through the panel and transmitting the unit external environment), foaming layer 133 can play thermal-insulated heat preservation effect, prevents the cold volume transmission of the inside refrigerated air of air conditioning unit to external environment, isolated heat transfer. Preferably, the inner panel 131 is sprayed with nuclear power radiation aging resistant paint, the foaming layer 133 is a heat insulation PU foaming layer, and the density of the foaming layer is more than 50kg/m 3 The thickness is preferably 50mm.
Preferably, a silica gel 134 is embedded between the inner panel 131 and the outer panel 132, and a 3mm heat insulation gap is embedded between the inner panel 131 and the outer panel 132 to play a role of heat insulation and cold bridge prevention (preventing cold energy in the unit from being transferred to the external environment of the unit through the panel).
Further, the base 11 and the frame 12 are connected by bolting, the panel 13 and the frame 12 are also connected by bolting, the frame 12 is first mounted on the base 11, and then a plurality of panels 13 are mounted on the frame 12 one by one. Specifically, in the air conditioning unit 2, the frame 12 between the filtering function section 3 and the cooling function section 4 is connected by 8.8-stage M12 bolts; the cooling functional section 4 and the humidifying functional section 5 are connected through an internal 8.8-level M10 bolt to form the same functional section; the humidifying function section 5 is connected with the air supply function section 6 through an 8.8-level M12 bolt; the exhaust function section 7 is arranged at the rear sides of the filtering function section 3, the cooling function section 4 and the humidifying function section 5, and the exhaust function section 7 is arranged in parallel with the filtering function section 3, the cooling function section 4 and the humidifying function section 5 through 8.8-level M12 bolts; in view of the fact that the functional sections are connected through bolts and the air conditioning unit 2 is required to be sealed (the leakage rate is smaller than 2%) as a whole, the connecting surfaces between the adjacent functional sections are sealed through radiation-resistant ethylene propylene rubber with the thickness of 6mm, the rubber sealing gaskets are non-metal materials, and the radiation environment exists in the nuclear power station, so that the ethylene propylene diene monomer rubber sealing gaskets with special radiation-resistant requirements are required to be adopted.
As shown in fig. 9, the filter assembly 32 includes a mounting rack 321, a primary filter 322 and a high efficiency filter 323, and the primary filter 322 and the high efficiency filter 323 are respectively mounted on the left and right sides of the mounting rack 321 at intervals.
By arranging the primary filter 322 and the efficient filter 323, the filtering functional section 3 can realize primary and efficient filtering of fresh air, and it is worth to say that the conventional design is to install the primary filter 322 and the efficient filter 323 on two different filter bent frames 321 respectively, and a certain space distance is needed between the two filter bent frames 321, so that the space inside the air conditioning unit 2 is occupied to a certain extent, the filter assembly 32 in the invention adopts a novel design structure of primary and efficient serial installation with a frame, the primary filter 322 and the efficient filter 323 are installed on the same installation bent frame 321, the installation space is effectively saved, the installation structure of equipment is simplified, and the airflow structure when passing through two-stage filters is optimized.
Further, the installation bent 321 includes a first installation frame 3211, an installation frame 3212 and a second installation frame 3213, the first installation frame 3211 and the second installation frame 3213 are respectively installed at the left side and the right side of the installation frame 3212, the primary filter 322 is installed at the left side of the first installation frame 3211, the efficient filter 323 is installed at the right side of the second installation frame 3213, ventilation cavities for air flow to pass through are respectively provided at the middle parts of the first installation frame 3211, the installation frame 3212 and the second installation frame 3213, and the ventilation cavities of the first installation frame 3211, the installation frame 3212 and the second installation frame 3213 are communicated;
the efficient filter 323 is formed by splicing frame filters.
Through with primary filter 322 install in first mounting frame 3211, will high-efficient filter 323 install in second mounting frame 3213, the centre forms an integral ventilation cavity, and the new trend is in after the primary filter 322 filters, through ventilation cavity gets into high-efficient filter 323 filters, has saved installation space, and has optimized the air current organization when passing through the two-stage filter.
As shown in fig. 10, further explanation, the cooler 41 includes a cooler frame 411, an inlet header 412, an outlet header 413, an inlet heat exchange tube 414, and an outlet heat exchange tube 415;
the cooler frame 411 includes a connection frame plate 4111 and a tube mounting plate 4112, wherein the connection frame plate 4111 is disposed at intervals along an up-down direction, the tube mounting plate 4112 is disposed at intervals along a front-back direction, the tube mounting plate 4112 is detachably mounted between the two connection frame plates 4111, the inlet water collecting pipe 412 and the outlet water collecting pipe 413 are respectively mounted at one side of the connection frame plate 4111, the inlet water heat exchange pipe 414 and the outlet water heat exchange pipe 415 are respectively mounted between the tube mounting plates 4112, and the inlet water heat exchange pipe 414 and the outlet water heat exchange pipe 415 are disposed penetrating through the tube mounting plates 4112;
the water inlet end of the water inlet heat exchange tube 414 is communicated with the water outlet end of the water inlet collecting tube 412, the water outlet end of the water inlet heat exchange tube 414 is communicated with the water inlet end of the water outlet heat exchange tube 415, and the water outlet end of the water outlet heat exchange tube 415 is communicated with the water inlet end of the water outlet collecting tube 413;
the inlet water collection pipe 412 is provided with a water inlet 4121, the outlet water collection pipe 413 is provided with a water outlet 4131, and the water inlet 4121 of the inlet water collection pipe 412 is arranged below the water outlet 4131 of the outlet water collection pipe 413.
By arranging the water inlet collecting pipe 412 and the water outlet collecting pipe 413, cooling water enters the water inlet heat exchange pipe 414 through the water inlet collecting pipe 412 and then enters the water outlet heat exchange pipe 415, and finally enters the water outlet collecting pipe 413 from the water outlet heat exchange pipe 415 to be discharged. Further, the connection frame plate 4111 is fixedly connected to the pipe body mounting plate 4112 by using a 8.8-stage bolt, and the water inlet heat exchange pipe 414 and the water outlet heat exchange pipe 415 are connected by using a serial pipe expansion connection manner and then are respectively fixed to the water inlet header 412 and the water outlet header 413 by silver brazing.
Preferably, the cooler 41 further includes a plurality of cooling ribs, the cooling ribs are fixed to the connection frame plate 4111 and the pipe body mounting plate 4112 by silver brazing, the inlet water heat exchange pipe 414 and the outlet water heat exchange pipe 415 are disposed between the cooling ribs, and by disposing the cooling ribs, the heat exchange area between the air flow and the cooler 41 can be increased, and the heat exchange efficiency can be improved.
Preferably, in the cooling function section 4, two coolers 41 may be arranged side by side to enhance the cooling effect.
As shown in fig. 11 and 12, further explanation, the wet film humidifier 51 includes a humidifier frame 511, a Y-filter 512, a water spraying device 513, a water inlet pipe 514, and a wet film module 515;
the water spraying device 513 and the wet film module 515 are respectively installed on the humidifier frame 511, the water outlet end of the Y-shaped filter 512 is connected with the water inlet end of the water inlet pipe 514, the water outlet end of the water inlet pipe 514 is connected with the water inlet end of the water spraying device 513, the water outlet end of the water spraying device 513 is arranged towards the wet film module 514, and the water spraying device 513 is used for spraying the wet film module 515.
Through setting up Y type filter 512, water jet equipment 513, inlet tube 514 and wet film module 515, rivers pass through after the Y type filter 512 filters the inlet tube 514 reachs water jet equipment 513, rethread water jet equipment 513 sprays to on the wet film module 515, the inside air of air conditioning unit 2 is through having sprayed water wet film module 515 carries out the humidification after, humidifier frame 511 with the humidifier mounting frame flange face on the installation organism 1 passes through bolted connection.
Specifically, the wet film module is 515 a module made of an existing wet film material, and the water spraying device 513 is a water sprayer.
As shown in fig. 2, 3, 4, and 13 to 15, specifically, the air inlet valve 311 is disposed at the fresh air port 31 of the installation body 1, the air exhaust valve 7111 is disposed at the air outlet 711 of the installation body 1, the first air return valve 7121 is disposed at the first air return port 712 of the installation body 1, and the second air return valve 7211 is disposed at the third air return port 721 of the installation body 1.
By arranging the air inlet valve 311, the air exhaust valve 7111, the first air return valve 7121 and the second air return valve 7211, the air inlet, the air exhaust and the air return of the nuclear-level primary air return type double-layer combined air conditioner unit for the nuclear power station can be controlled, and the operation is convenient. In summer, because the outdoor fresh air has a larger heat load, the first air return valve 7121, the second air return valve 7211 and the air exhaust valve 7111 are required to be opened in a mode of 'fresh air and return air mixing', indoor return air is sucked from the third air return port 721 through the air exhaust fan 722 in the air return chamber 72 of the air exhaust function section 7, part of return air is exhausted to the outdoor through the air exhaust port 711 according to the fresh air and return air proportion adjustment requirements of different temperatures by the air exhaust fan 722, the other part of return air enters the filtering function section 3 through the first air return port 712 and the second air return port 33, the mixed air is filtered through the filtering function section 3 after being mixed with fresh air, the mixed air is cooled through the cooling function section 4 and then humidified through the humidifying function section 5, and finally, the mixed air of return air and fresh air can be blown through the blower 62.
Specifically, the blower 62 and the exhaust fan 722 are nuclear-level centrifugal fans, the air inlet valve 311, the first air return valve 7121 and the second air return valve 7211 are nuclear-level air adjusting valves, one blower 62 and one exhaust fan 722 are respectively arranged in the upper and lower two-layer air conditioning units 2, that is, the nuclear-level primary air return type double-layer combined air conditioning unit for the nuclear power station is provided with two blowers 62 and two exhaust fans 722 in total, so that the air supply effect and the air exhaust effect are ensured, as shown in fig. 1, the upper and lower blowers 62 are arranged in parallel, and the air supply efficiency is high.
Preferably, the air inlet valve 311 is an electrically heated valve.
By adopting the electric heating valve for the air inlet valve 311, when the temperature is lower than 0 ℃ in the north cold season, the valve blade can be prevented from being frozen and blocked by preheating the valve blade.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. The nuclear-grade primary air return type double-layer combined air conditioning unit for the nuclear power station is characterized by comprising an installation machine body and an upper layer of air conditioning unit and a lower layer of air conditioning unit which are arranged in the installation machine body, wherein the air conditioning unit is sequentially divided into a filtering function section, a cooling function section, a humidifying function section and an air supply function section from left to right, and the rear sides of the filtering function section, the cooling function section and the humidifying function section are provided with an air exhaust function section;
the mounting machine body comprises a base, a frame and a plurality of panels, wherein the frame is mounted on the base, the panels are mounted on the frame, and the base and the frame are respectively of an integral welding forming structure;
the installation machine body is provided with a fresh air inlet at the left end of the filtering functional section, and is provided with a filter assembly for filtering fresh air;
the installation machine body is provided with a cooler in the cooling functional section, the cooler is used for cooling the filtered fresh air, the installation machine body is provided with a wet film humidifier in the humidifying functional section, and the wet film humidifier is used for humidifying the cooled fresh air;
the installation machine body is provided with an air supply port at the front end of the air supply functional section, the installation machine body is provided with an air feeder at the air supply functional section, the air inlet end of the air feeder is arranged towards the humidifying functional section, and the air outlet end of the air feeder is arranged towards the air supply port;
the installation organism in the functional section of airing exhaust is equipped with the exhaust chamber and the return air chamber that communicate in proper order along left and right directions and set up, the installation organism in the rear end of exhaust chamber is equipped with the air outlet, the installation organism in the front end of exhaust chamber is equipped with first return air inlet, the installation organism in the rear end of filtering functional section be equipped with the second return air inlet that first return air inlet corresponds the setting, the second return air inlet is located filter assembly's left side, the installation organism in the rear end of return air chamber is equipped with the third return air inlet, be equipped with the exhaust fan in the return air chamber, the air inlet end orientation of exhaust fan the setting of third return air inlet, the air outlet orientation of exhaust fan the exhaust chamber sets up.
2. The nuclear grade once-through air-return type double-layer combined air conditioning unit for a nuclear power plant according to claim 1, wherein the base comprises a base cross beam, a base vertical beam and a base reinforcing beam;
the base beams are arranged at intervals along the left-right direction, the base vertical beams are arranged at intervals along the front-back direction, the base reinforcing beams are arranged at intervals along the front-back direction or the left-right direction, the base vertical beams are connected between two adjacent base beams, the base reinforcing beams are connected between two adjacent base beams, or the base reinforcing beams are connected between two adjacent base vertical beams;
and the base cross beam, the base vertical beam and the base reinforcing beam are integrally welded and formed.
3. The nuclear grade once-through air-return type double-layer combined air conditioning unit for a nuclear power plant according to claim 1, wherein the frame comprises a cross frame beam, a mullion beam, a spacer beam, a movable beam and a diagonal bracing beam;
the transverse frame beams are arranged at intervals along the left-right direction, the vertical frame beams are arranged at intervals along the up-down direction, the spacing beams and the movable beams are respectively arranged at intervals along the left-right direction or along the up-down direction, the diagonal bracing beams are obliquely arranged between the movable beams and the transverse frame beams, the vertical frame beams are connected between two adjacent transverse frame beams, the spacing beams are connected between two adjacent transverse frame beams or between two adjacent vertical frame beams, and the movable beams are detachably arranged between two adjacent transverse frame beams;
and the transverse frame beams, the vertical frame beams and the spacing beams are integrally welded and formed.
4. The nuclear grade primary air return type double-layer combined air conditioning unit for a nuclear power plant according to claim 1, wherein the panel comprises an inner panel, an outer panel and a foaming layer, the outer panel is mounted on the frame, the inner panel is arranged to face the inner side of the frame, the outer panel is arranged to face the outer side of the frame, and the foaming layer is filled between the inner panel and the outer panel.
5. The nuclear grade primary return air type double-layer combined air conditioning unit for a nuclear power plant according to claim 1, wherein the filter assembly comprises an installation bent, a primary filter and a high-efficiency filter, and the primary filter and the high-efficiency filter are respectively installed on the left side and the right side of the installation bent at intervals.
6. The nuclear grade primary air return type double-layer combined air conditioning unit for the nuclear power plant according to claim 5, wherein the installation bent frame comprises a first installation frame, an installation frame and a second installation frame, the first installation frame and the second installation frame are respectively installed on the left side and the right side of the installation frame, the primary filter is installed on the left side of the first installation frame, the efficient filter is installed on the right side of the second installation frame, ventilation cavities for air flow to pass through are respectively formed in the middle parts of the first installation frame, the installation frame and the second installation frame, and the ventilation cavities of the first installation frame, the installation frame and the second installation frame are communicated;
the high-efficiency filter is formed by splicing frame filters.
7. The nuclear grade primary return air double-layer combined air conditioning unit for a nuclear power plant of claim 1, wherein the cooler comprises a cooler frame, a water inlet header, a water outlet header, a water inlet heat exchange tube and a water outlet heat exchange tube;
the cooler frame comprises a connecting frame plate and a pipe body mounting plate, wherein the connecting frame plate is arranged at intervals along the up-down direction, the pipe body mounting plate is arranged at intervals along the front-back direction, the pipe body mounting plate is detachably arranged between the two connecting frame plates, the water inlet collecting pipe and the water outlet collecting pipe are respectively arranged at one side of the connecting frame plate, the water inlet heat exchange pipe and the water outlet heat exchange pipe are respectively arranged between the pipe body mounting plates, and the water inlet heat exchange pipe and the water outlet heat exchange pipe penetrate through the pipe body mounting plates;
the water inlet end of the water inlet heat exchange tube is communicated with the water outlet end of the water inlet collecting pipe, the water outlet end of the water inlet heat exchange tube is communicated with the water inlet end of the water outlet heat exchange tube, and the water outlet end of the water outlet heat exchange tube is communicated with the water inlet end of the water outlet collecting pipe;
the water inlet collecting pipe is provided with a water inlet, the water outlet collecting pipe is provided with a water outlet, and the water inlet of the water inlet collecting pipe is arranged below the water outlet of the water outlet collecting pipe.
8. The nuclear grade primary return air type double-layer combined air conditioning unit for a nuclear power plant according to claim 1, wherein the wet film humidifier comprises a humidifier frame, a Y-shaped filter, a water spraying device, a water inlet pipe and a wet film module;
the water spraying device and the wet film module are respectively arranged on the humidifier frame, the water outlet end of the Y-shaped filter is connected with the water inlet end of the water inlet pipe, the water outlet end of the water inlet pipe is connected with the water inlet end of the water spraying device, the water outlet end of the water spraying device faces the wet film module, and the water spraying device is used for spraying the wet film module.
9. The nuclear-grade primary air return type double-layer combined air conditioning unit for nuclear power plants according to claim 1, wherein the installation machine body is provided with an air inlet valve at the fresh air port, the installation machine body is provided with an exhaust valve at the exhaust port, the installation machine body is provided with a first air return valve at the first air return port, and the installation machine body is provided with a second air return valve at the third air return port.
10. The nuclear grade primary return air type double-layer combined air conditioning unit for nuclear power plants according to claim 9, wherein the air inlet valve is an electric heating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310054833.5A CN116025967A (en) | 2023-02-03 | 2023-02-03 | Nuclear grade primary return air type double-layer combined air conditioning unit for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310054833.5A CN116025967A (en) | 2023-02-03 | 2023-02-03 | Nuclear grade primary return air type double-layer combined air conditioning unit for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116025967A true CN116025967A (en) | 2023-04-28 |
Family
ID=86079261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310054833.5A Pending CN116025967A (en) | 2023-02-03 | 2023-02-03 | Nuclear grade primary return air type double-layer combined air conditioning unit for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116025967A (en) |
-
2023
- 2023-02-03 CN CN202310054833.5A patent/CN116025967A/en active Pending
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