CN115717555B - Air inlet device of gas-steam combined cycle unit - Google Patents
Air inlet device of gas-steam combined cycle unit Download PDFInfo
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- CN115717555B CN115717555B CN202211404358.1A CN202211404358A CN115717555B CN 115717555 B CN115717555 B CN 115717555B CN 202211404358 A CN202211404358 A CN 202211404358A CN 115717555 B CN115717555 B CN 115717555B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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Abstract
The invention discloses an air inlet device of a gas-steam combined cycle unit, which comprises a preheating mechanism, a gas inlet device and a gas outlet device, wherein the preheating mechanism comprises a main pipe part, a heat exchange part arranged on the inner side of the main pipe part, and a gas exchange part connected with the heat exchange part; and the circulating suction mechanism comprises a circulating shielding part arranged on the inner side of the main pipe part, an air inlet branch part connected with the circulating shielding part, and a concentration part connected with the air inlet branch part. When the air outlet corresponds to the position of the outlet of one or two heat exchange cavities, the heated air inside the corresponding heat exchange cavity is pumped into the inner side of the concentrated part through the air inlet branch part, the air pressure inside the heat exchange cavity is reduced, the outside air is supplemented into the inner side of the heat exchange cavity through the air inlet, other heat exchange cavities which are not corresponding are blocked by the air inlet shielding ring and the air outlet shielding ring respectively, the heat exchange tube continuously heats the air inside the heat exchange cavities, the heating time of the air is prolonged, and the better air heating effect is maintained.
Description
Technical Field
The invention relates to the technical field of gas-steam combined cycle units, in particular to an air inlet device of a gas-steam combined cycle unit.
Background
The gas-steam combined cycle generator set has the advantages of high efficiency, low consumption, quick start, flexible adjustment, high availability, investment saving, short construction period, small environmental pollution and the like, and is increasingly paid attention to and developed in the foreign power industry.
In the prior art, when the gas-steam combined cycle unit operates at partial load, the gas-steam combined cycle unit operates by using heated air, so that the total output of the combined cycle is unchanged, but the load rate of the gas-steam combined cycle unit is increased, and the efficiency of the gas-steam combined cycle unit is improved, so that the efficiency of the gas-steam combined cycle unit can be improved, the consumption of natural gas is reduced, but the air inlet speed of the gas-steam combined cycle unit is high, so that the air is heated for a short time, and particularly, in the weather with lower air temperature, the short heating time can reach the problem of insufficient air heating.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The invention is provided in view of the problem that the air heating time of the air inlet device of the existing gas-steam combined cycle unit is short.
The invention aims to provide an air inlet device of a gas-steam combined cycle unit.
In order to solve the technical problems, the invention provides the following technical scheme: an air inlet device of a gas-steam combined cycle unit comprises,
The preheating mechanism comprises a main pipe part, a heat exchange part arranged on the inner side of the main pipe part, and a gas exchange part connected with the heat exchange part; and
The circulating suction mechanism comprises a circulating shielding part arranged on the inner side of the main pipe part, an air inlet branch part connected with the circulating shielding part, and a concentration part connected with the air inlet branch part.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the heat exchange part comprises a plurality of heat exchange cavities arranged on the inner side of the main pipe part and heat exchange pipes arranged on the inner side of the heat exchange cavities;
the gas exchange part comprises a hot gas piece communicated with one end of the heat exchange tube and a cold gas piece communicated with the other end of the heat exchange tube;
An inlet is arranged at one end of the heat exchange cavity, the other end is provided with a discharge outlet.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the hot air piece comprises a hot air main pipe, a plurality of hot air branch pipes arranged on the hot air main pipe and a hot air port arranged on the hot air main pipe;
the cold air piece comprises a cold air main pipe, a plurality of cold air branch pipes arranged on the cold air main pipe and a cold air port arranged on the cold air main pipe;
The heat exchange tube is communicated with the hot gas main pipe through the hot gas branch pipe, and the heat exchange tube is communicated with the cold gas main pipe through the cold gas branch pipe.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the circulating shielding part comprises a main shaft, an air inlet shielding ring and an air outlet shielding ring, and a driving motor;
The main shaft is arranged on the inner side of the main pipe part and can rotate;
The air inlet shielding ring is arranged on the outer side of the main shaft, is attached to the inlet of the heat exchange cavity, and is provided with an air inlet;
the air outlet shielding ring is arranged on the outer side of the main shaft, is attached to the outlet of the heat exchange cavity, and is provided with an air outlet;
The driving motor is arranged on the inner side of the main pipe part and is in transmission connection with the main shaft.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the position of the air inlet corresponds to the position of the air outlet, the air outlet shielding ring is provided with a connecting pipe at each air outlet, and the connecting pipes are communicated with the concentration part.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the connecting pipe is connected with the air outlet through a filtering mechanism; the filtering mechanism comprises a filter device, wherein the filter device comprises a filter device,
A positioning pipe part fixed to the air outlet;
a rotation tube portion provided inside the positioning tube portion and rotatable;
a drive gear provided on the rotation pipe portion;
a filter screen provided inside the rotary pipe section;
an arc rack is arranged on the inner side of the main pipe part.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the positioning pipe part comprises a fixed pipe end fixed on the air outlet and an expansion pipe end formed on the fixed pipe end;
The rotary pipe part comprises an inner end sleeved on the inner side of the positioning pipe part, an extension edge formed on the outer side of the inner pipe end and a connecting end formed on the end part of the inner pipe end;
The inner end is provided with a drain groove, the extension edge is provided with a round groove, one end of the extension pipe end extends to the inner side of the round groove, and one end of the connecting pipe is connected with the connecting end.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the expansion pipe end is provided with a discharge groove, and the outer side of the built-in end is provided with a discharge piece.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the discharging piece comprises an upright post fixed at the outer side of the built-in end, a sleeve sleeved at the outer side of the upright post in a sliding manner, a rubber plug arranged at the end part of the sleeve, and a spring sleeved at the outer side of the upright post;
the spring is located between the sleeve and the outer wall of the built-in end, and one side, far away from the sleeve, of the rubber plug is an arc surface.
As a preferable scheme of the air inlet device of the gas-steam combined cycle unit, the invention comprises the following steps: the concentration portion may comprise a portion of the plurality of tubes,
The centralized pipe is arranged at one end of the main shaft, two limiting rings are arranged on the inner side of the centralized pipe, and a through hole is formed in the side wall of the centralized pipe;
The semi-through pipe is sleeved on the inner side of the centralized pipe and positioned between the two limiting rings, an arc through groove is formed in the outer side of the semi-through pipe, and a positioning end is arranged on one side of the semi-through pipe;
the outer side wall of the half-way pipe is attached to the inner side wall of the centralized pipe.
The invention has the beneficial effects that: through setting up preheating mechanism and circulation suction means, through driving motor's rotation, can drive the main shaft rotation, through the rotation of main shaft, can drive simultaneously and advance air shielding ring and go out air shielding ring and rotate, the air inlet is along with the incessant conversion position of rotation of air inlet shielding ring, the gas outlet is along with the incessant conversion position of rotation of air outlet shielding ring also, the position of air inlet and gas outlet corresponds all the time, when the gas outlet corresponds with one of them or wherein the discharge port position of two heat transfer chamber, the inboard heated air of heat transfer chamber that corresponds is drawn into the inboard of centralized part through the branch portion that admits air, the inboard atmospheric pressure of heat transfer chamber drops, outside air is through the inboard of air inlet moisturizing heat transfer chamber, other non-corresponding heat transfer chamber, inlet port and discharge port are blocked by air inlet shielding ring and air outlet shielding ring respectively, the heat transfer pipe lasts its inboard air of heating, and then lengthen the time that the air is heated for in colder weather, keep better air heating effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of the overall structure of an air intake device of a gas-steam combined cycle unit of the present invention.
FIG. 2 is a schematic view of the overall internal structure of the air intake device of the gas-steam combined cycle unit of the present invention.
Fig. 3 is a schematic structural view of a circulating suction mechanism of an air inlet device of the gas-steam combined cycle unit.
FIG. 4 is a schematic diagram of a filtering mechanism of an air intake device of the gas-steam combined cycle unit.
FIG. 5 is an exploded view of the structure of the filtering mechanism of the air inlet device of the gas-steam combined cycle unit.
FIG. 6 is a schematic view of the main pipe and heat exchange chamber of the air intake device of the gas-steam combined cycle unit of the present invention.
Fig. 7 is a schematic view of a central portion structure of an air intake device of the gas-steam combined cycle unit according to the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1, there is provided a schematic overall structure of an air intake device of a gas-steam combined cycle unit, as shown in fig. 1, the air intake device of a gas-steam combined cycle unit includes a preheating mechanism 100 including a main pipe portion 101, a heat exchanging portion 102 disposed inside the main pipe portion 101, and a gas exchanging portion 103 connected to the heat exchanging portion 102; and the circulating suction mechanism 200 comprises a circulating shielding part 201 arranged on the inner side of the main pipe part 101, an air inlet branch part 202 connected with the circulating shielding part 201, and a concentration part 203 connected with the air inlet branch part 202, wherein the gas exchange part 103 sends smoke with higher temperature into the inner side of the heat exchange part 102, so that the temperature of air on the inner side of the heat exchange part 102 is increased, the air on different positions on the inner side of the heat exchange part 102 is sucked through the circulating suction mechanism 200, the air on the inner side of the space of the heat exchange part 102 which is not sucked is in a stable temperature-rising state, the time for heating the air is prolonged, and the better air temperature-rising effect is kept in colder weather.
Specifically, the concentration part 203 is connected with an air inlet of a gas-air intake mixing device of the gas-steam combined cycle unit, heated air is mechanically inside the concentration part 203 through the air inlet branch part 202, and finally is sucked inside the air intake mixing device through the concentration part 203, and mixed combustion is performed between the inside of the air intake mixing device and the gas.
Further, the heat exchange portion 102 includes a plurality of heat exchange chambers 102a provided inside the main pipe portion 101, and a heat exchange pipe 102b provided inside the heat exchange chambers 102 a; the gas exchanging part 103 includes a hot gas piece 103a communicating with one end of the heat exchanging pipe 102b, and a cold gas piece 103b communicating with the other end of the heat exchanging pipe 102b; one end of each heat exchange cavity 102a is provided with an inlet 102a-1, the other end is provided with an outlet 102a-2, the inner side of each heat exchange cavity 102a is provided with a heat exchange tube 102b, when the gas air suction mixing device of the gas-steam combined cycle unit sucks the air inside the concentration part 203, the air pressure inside the concentration part 203 is reduced, the outside air enters the inner side of the heat exchange cavity 102a through the inlet 102a-1, and the heated air inside the heat exchange cavity 102a reaches the inner side of the concentration part 203 through the air inlet branch 202.
In the working process of the gas-steam combined cycle unit, a large amount of smoke with higher temperature is generated by gas combustion, the hot gas piece 103a is connected with the smoke outlet 102a-2 with higher temperature, the smoke with higher temperature is conveyed to the inner side of the heat exchange tube 102b, the smoke with higher temperature in the inner side of the heat exchange tube 102b passes through the heat exchange tube 102b, heat is transferred to the air in the inner side of the heat exchange cavity 102a, as new smoke enters the inner side of the heat exchange tube 102b through the hot gas piece 103a, the smoke in the inner side of the heat exchange tube 102b is discharged through the cold gas piece 103b, and the heat exchange tube 102b always keeps higher temperature.
In this embodiment, the number of heat exchange cavities 102a is 8, and 8 heat exchange cavities 102a are circumferentially distributed on the inner side of the main pipe portion 101, and each heat exchange cavity 102a is mutually attached.
Further, the hot air part 103a comprises a hot air main pipe 103a-1, a plurality of hot air branch pipes 103a-2 arranged on the hot air main pipe 103a-1, and a hot air port 103a-3 arranged on the hot air main pipe 103 a-1; the cold air piece 103b includes a cold air main pipe 103b-1, a plurality of cold air branch pipes 103b-2 provided on the cold air main pipe 103b-1, and a cold air port 103b-3 provided on the cold air main pipe 103 b-1; the heat exchange tube 102b is communicated with the hot gas main tube 103a-1 through the hot gas branch tube 103a-2, the heat exchange tube 102b is communicated with the cold gas main tube 103b-1 through the cold gas branch tube 103b-2, the hot gas piece 103a is connected with the pipeline through the hot gas port 103a-3, the hot gas piece 103a is connected with the smoke exhaust channel of the gas-steam combined cycle unit through the pipeline, and air with higher temperature is dispersed to the inner sides of the heat exchange tubes 102b through the pipeline and the hot gas piece 103 a.
Along with the fact that the smoke and steam inside the hot gas main pipe 103a-1 is continuously dispersed to the inner sides of the heat exchange pipes 102b through the hot gas branch pipes 103a-2, the smoke and steam inside the heat exchange pipes 102b passes through the cold gas branch pipes 103b-2 and is concentrated to the inner sides of the cold gas main pipe 103b-1 and finally discharged, wherein the number of the hot gas branch pipes 103a-2, the cold gas branch pipes 103b-2 and the heat exchange pipes 102b is 8.
Further, the circulation shielding part 201 includes a main shaft 201a, an inlet shielding ring 201b, an outlet shielding ring 201c, and a driving motor 201d; the main shaft 201a is provided inside the main pipe 101 and is rotatable; the air inlet shielding ring 201b is arranged on the outer side of the main shaft 201a, is attached to the inlet 102a-1 of the heat exchange cavity 102a, and is provided with an air inlet 201b-1; the air outlet shielding ring 201c is arranged on the outer side of the main shaft 201a, is attached to the exhaust port 102a-2 of the heat exchange cavity 102a, and is provided with an air outlet 201c-1; the driving motor 201d is arranged at the inner side of the main pipe part 101 and is in transmission connection with the main shaft 201a, in the whole rotation process, the main shaft 201a can be driven to rotate through the rotation of the driving motor 201d, the air inlet shielding ring 201b and the air outlet shielding ring 201c can be simultaneously driven to rotate through the rotation of the main shaft 201a, the air inlet 201b-1 is also in a continuously conversion position along with the rotation of the air inlet shielding ring 201b, the air outlet 201c-1 is also in a continuously conversion position along with the rotation of the air outlet shielding ring 201c, the positions of the air inlet 201b-1 and the air outlet 201c-1 are always corresponding, when the positions of the air outlet 201c-1 and the outlet 102a-2 of one or two heat exchange cavities 102a are corresponding, heated air at the inner side of the corresponding heat exchange cavity 102a is pumped into the inner side of the concentrated part 203 through the air inlet branch part 202, the air pressure at the inner side of the heat exchange cavity 102a is reduced, and the outside air is supplemented into the inner side of the heat exchange cavity 102a through the air inlet 201 b-1.
Wherein, a mounting rod is arranged on the inner side of the main pipe part 101, a sleeve hole is arranged on the mounting rod, the main shaft 201a is sleeved on the inner side of the mounting rod through the sleeve hole, the main shaft 201a can rotate, the axle center of the main shaft 201a coincides with the axle center of the main pipe part 101, when the air inlet 201b-1 and the air outlet 201c-1 rotate, the main shaft 201a rotates with the axle center, the circulating air corresponding to the positions of a plurality of heat exchange cavities 102a is extracted from the inner side of the corresponding heat exchange cavity 102a, other non-corresponding heat exchange cavities 102a, the inlet 102a-1 and the outlet 102a-2 are blocked by the air inlet shielding ring 201b and the air outlet shielding ring 201c respectively, and the heat exchange tube 102b continuously heats the air on the inner side, thereby prolonging the heating time of the air, so that in colder weather, a better air heating effect is kept.
The positions of the air inlets 201b-1 correspond to the positions of the air outlets 201c-1, the air outlet shielding rings 201c are provided with connecting pipes 202a at each air outlet 201c-1, the connecting pipes 202a are communicated with the concentration parts 203, when air inside the concentration parts 203 is pumped by a gas-air suction mixing device of the gas-steam combined cycle unit, the air pressure inside the concentration parts 203 is reduced, and heated air inside the heat exchange cavities 102a is sucked into the inner sides of the concentration parts 203 through the connecting pipes 202 a.
The operation process comprises the following steps: the spindle 201a can be driven to rotate through rotation of the driving motor 201d, the air inlet shielding ring 201b and the air outlet shielding ring 201c can be driven to rotate simultaneously through rotation of the spindle 201a, the air inlet 201b-1 is continuously switched along with rotation of the air inlet shielding ring 201b, the air outlet 201c-1 is also continuously switched along with rotation of the air outlet shielding ring 201c, the positions of the air inlet 201b-1 and the air outlet 201c-1 are always corresponding, when the positions of the air outlet 201c-1 and the exhaust outlet 102a-2 of one or two of the heat exchange cavities 102a are corresponding, heated air inside the corresponding heat exchange cavity 102a is pumped into the inner side of the concentration part 203 through the air inlet branch part 202, air pressure inside the heat exchange cavity 102a is reduced, and external air is supplemented into the inner side of the heat exchange cavity 102a through the air inlet 201 b-1.
Other heat exchange cavities 102a which do not correspond to each other, namely an inlet 102a-1 and an outlet 102a-2 are blocked by an inlet shielding ring 201b and an outlet shielding ring 201c respectively, and the heat exchange tube 102b continuously heats air inside the heat exchange cavities, so that the time for heating the air is prolonged, and a good air heating effect is maintained in colder weather.
Example 2
Referring to fig. 1 to 6, this embodiment differs from the first embodiment in that: the connection pipe 202a and the air outlet 201c-1 are connected through the filtering mechanism 300; the filter mechanism 300 includes a positioning tube portion 301 fixed to the air outlet 201c-1; a rotation tube portion 302 provided inside the positioning tube portion 301 and rotatable; a drive gear 303 provided on the rotation tube portion 302; the filter screen 304 is disposed inside the rotating tube 302, the circular arc rack 101a is disposed inside the main tube 101, during the rotation of the air outlet shielding ring 201c, whenever the filter mechanism 300 reaches the corresponding position of the circular arc rack 101a, the driving gear 303 rotating around the spindle 201a contacts the circular arc rack 101a, and the driving gear 303 rotates around the spindle 201a, and is influenced by the circular arc rack 101a, and rotates, the driving gear 303 is fixed inside the rotating tube 302, and the driving gear 303 drives the rotating tube 302 to rotate, so that impurities in the air filtered by the filter screen 304 are poured out.
The air inlet shielding ring 201b is provided with a preliminary filtering member at the air inlet 201b-1, the preliminary filtering member is a net body, impurities in air entering the inner side of the heat exchange cavity 102a can be filtered, after some impurities pass through the preliminary filtering member, the impurities reach the inner side of the inner end 302a along with the air flowing from the heat exchange cabin, the filter screen 304 is arranged at the inner side of the inner end 302a, the impurities in the air are filtered secondarily, and the filtered impurities remain at the inner side of the inner end 302 a.
Specifically, the positioning tube portion 301 includes a fixed tube end 301a fixed to the air outlet 201c-1, and an expanded tube end 301b formed on the fixed tube end 301 a; the rotary pipe part 302 comprises a built-in end 302a sleeved on the inner side of the positioning pipe part 301, an extension edge 302b formed on the outer side of the built-in pipe end, and a connecting end 302c formed on the end of the built-in pipe end; the inner end 302a is provided with a drain groove 302a-1 on the expansion pipe end 301b, the extension side 302b is provided with a round groove 302b-1, one end of the expansion pipe end 301b extends to the inner side of the round groove 302b-1, and one end of the connecting pipe 202a is connected with the connecting end 302 c.
Wherein, the inner wall of the fixed pipe end 301a is attached to the outer wall of the built-in end 302a, the inner diameter of the expanded pipe end 301b is larger than the outer diameter of the built-in end 302a, so that a circular cavity is formed between the expanded pipe end 301b and the built-in end 302a, when the driving gear 303 contacts the circular rack 101a, the driving gear 303 rotates to drive the built-in end 302a to rotate, and then the impurities filtered by the filter screen 304 at the inner side of the built-in end 302a leak from the drain groove 302a-1 to the inner side of the circular cavity.
Further, in this embodiment, the heat exchange cavities 102a are distributed on the inner side of the main pipe portion 101 in a fan shape, wherein the heat exchange cavities 102a are mutually attached, an angle occupied by each heat exchange cavity 102a is 30 degrees, so that an 80-degree space unoccupied by the heat exchange cavity 102a remains on the inner side of the main pipe portion 101, in the space, an arc baffle 101b is arranged, two ends of the arc baffle 101b are respectively attached to two heat exchange cavities 102a, four air inlets 201b-1 and four air outlets 201c-1 are respectively adopted, an included angle between each air outlet 201c-1 and an adjacent air outlet 201c-1 is 90 degrees, and the arc rack 101a is arranged in a space unoccupied by the heat exchange cavity 102a of the main pipe portion 101.
Wherein, the inner side wall of the fixed pipe end 301a is provided with a limit circular groove 301a-1, the outer side of the inner end 302a is provided with an annular limit protrusion 302a-2, and the annular limit protrusion 302a-2 can be rotationally clamped on the inner side of the limit circular groove 301a-1, so as to avoid the inner end 302a from being separated from the inner side of the fixed pipe end 301 a.
By providing four air inlets 201b-1, four air outlets 201c-1, and four connecting pipes 202a, four filtering mechanisms 300, in the process of rotating the air outlet shielding ring 201c, the positions of the air inlets 201b-1 and the corresponding air outlets 201c-1 are corresponding to each other all the time, so that air always passes through the inner sides of the heat exchange cavities 102a, through the filtering mechanisms 300, and the connecting pipes 202a, to reach the inner sides of the concentration parts 203, the four filtering mechanisms 300, along with the rotation of the air outlet shielding ring 201c, the driving gears 303 on the four filtering mechanisms 300 are in contact with the circular arc racks 101a, the impurities filtered by the inner sides of the built-in ends 302a in the four filtering mechanisms 300 can be circularly poured into the inner sides of the circular arc racks, and when one filtering mechanism 300 is separated from all the heat exchange cavities 102a, the corresponding air outlet 201c-1 can be shielded by the circular arc baffles 101b, so that the air which is not heated outside reaches the inner sides of the filtering mechanism 300, reaches the inner sides of the concentration parts 203 through the connecting pipes 202a, and the problem of affecting the temperature of the air inside the concentration parts 203 is avoided.
The rest of the structure is the same as in embodiment 1.
The operation process comprises the following steps: after some impurities pass through the primary filter, the filter screen 304 is disposed at the inner side of the inner end 302a along with the air flowing from the heat exchange cabin to the inner side of the inner end 302a, and performs secondary filtration on the impurities in the air, and the filtered impurities remain at the inner side of the inner end 302 a.
In the process of rotating the air outlet shielding ring 201c, each time the filter mechanism 300 reaches the corresponding position of the circular arc rack 101a, the driving gear 303 rotating with the main shaft 201a as the axis contacts the circular arc rack 101a, and then the driving gear 303 rotates with the main shaft 201a as the axis, and is influenced by the circular arc rack 101a, autorotation occurs, the driving gear 303 is fixed on the inner side of the rotating pipe 302, the driving gear 303 drives the rotating pipe 302 to rotate, and impurities in air filtered by the filter screen 304 are poured out.
Example 3
Referring to fig. 1 to 7, this embodiment differs from the above embodiment in that: the expansion pipe end 301b is provided with a discharge groove 301b-1, a discharge member 305 is provided on the outer side of the inner end 302a, and the discharge member 305 rotates in association with the rotation of the inner end 302a, thereby pushing the foreign matters accumulated between the inner end 302a and the expansion pipe end 301b, and discharging the foreign matters to the outer side of the expansion pipe end 301b through the discharge groove 301 b-1.
Specifically, the discharging member 305 includes a column 305a fixed to the outside of the inner end 302a, a sleeve 305b slidably fitted to the outside of the column 305a, a rubber stopper 305c provided at the end of the sleeve 305b, and a spring 305d fitted to the outside of the column 305 a; the spring 305d is located between the sleeve 305b and the outer wall of the built-in end 302a, one side of the rubber plug 305c away from the sleeve 305b is an arc surface, wherein the rubber plug 305c is abutted against the inner side wall of the expanded pipe end 301b under the action of the spring 305d in the rotating process of the built-in end 302a, along with the rotation of the built-in end 302a, the rubber plug 305c scrapes off impurities accumulated in the expanded pipe end 301b, finally the impurities are pushed out through the discharge groove 301b-1, the length of the rubber plug 305c corresponds to the length of the discharge groove 301b-1, the width of the arc surface of the rubber plug 305c is larger than that of the discharge groove 301b-1, and the problem that the built-in end 302a cannot rotate due to the fact that the rubber plug 305c is blocked on the inner side of the discharge groove 301b-1 is avoided.
Wherein, the outside of stand 305a has offered the anti-disengaging groove, is provided with the anti-disengaging protrusion in the inboard of sleeve 305b, and the anti-disengaging protrusion slides and cup joints in the inboard of anti-disengaging groove.
Further, the number of teeth of the circular arc rack 101a is equal to the number of teeth of the driving gear 303, so that the driving gear 303 drives the built-in end 302a to rotate once through one side of the circular arc rack 101a, the initial position of the rubber plug 305c is located at the inner side of the discharge groove 301b-1, and when the driving gear 303 and the circular arc rack 101a are separated, the rubber plug 305c cleans the inner wall of the expansion pipe end 301b once and resets to the inner side of the discharge groove 301b-1 each time, thereby playing a role of blocking the discharge groove 301b-1, and avoiding the problem that when the filtering mechanism 300 corresponds to the heat exchange cavity 102a, the outside air reaches the inner side of the built-in end 302a through the discharge groove 301b-1 and the leakage groove 302a-1, thereby affecting the temperature of the air inside the concentration part 203.
Further, the concentration part 203 comprises a concentration pipe 203a arranged at one end of the main shaft 201a, two limiting rings 203a-1 are arranged at the inner side of the concentration pipe, and a through hole 203a-2 is arranged at the side wall of the concentration pipe; the half-through pipe 203b is sleeved on the inner side of the centralized pipe 203a and positioned between the two limiting rings 203a-1, the outer side of the half-through pipe is provided with an arc through groove 203b-1, and one side of the half-through pipe is provided with a positioning end 203b-2; the outer side wall of the half pipe 203b is attached to the inner side wall of the collecting pipe 203a, wherein the connecting pipe 202a is made of hard materials, such as stainless steel, metal, etc., when the air outlet folding ring rotates, the collecting pipe 203a rotates along with the main shaft 201a, the outer side of the collecting pipe 203a is provided with 4 connecting ports 203a-2, which are respectively connected with the four connecting pipes 202a, the positioning end 203b-2 is connected with an air inlet of a gas-air intake mixing device of the gas-steam combined cycle unit, the positioning end 203b-2 is fixed in a position which cannot rotate after connection, the opening angle of the circular arc penetrating groove 203b-1 is 240 degrees, the part which is not provided with the circular arc penetrating groove 203b-1 corresponds to the space position which is reserved for 80 degrees inside the main pipe 101 and is not occupied by the heat exchange cavity 102a, when one of the filtering mechanisms 300 reaches the corresponding position of the circular arc racks 101a, the connecting port 203a-2 connected with the connecting pipe 202a is blocked by the part which is not provided with the circular arc penetrating groove 203b-1, so that when the driving gear 303 contacts the circular arc racks 101a, the outer air plug 305c is prevented from being separated from the inner side of the discharging groove 301b-1, the outer side of the air is connected with the discharging groove 302a, the inner side of the connecting pipe 302a, and the air inlet of the connecting pipe 203a is connected to the inner side of the half pipe 203a, and the connecting pipe 2.
The rest of the structure is the same as in embodiment 2.
The operation process comprises the following steps: during the rotation of the inner end 302a, the rubber stopper 305c abuts against the inner side wall of the expansion pipe end 301b with the circular arc surface thereof under the action of the spring 305d, and as the inner end 302a rotates, the rubber stopper 305c scrapes off the impurities accumulated in the expansion pipe end 301b, and finally pushes out the impurities through the discharge groove 301 b-1.
Each time the driving gear 303 and the circular arc rack 101a are separated, the rubber stopper 305c cleans the inner wall of the expansion pipe end 301b for one circle and resets to the inner side of the discharge groove 301b-1, which plays a role of blocking the discharge groove 301b-1, and avoids the problem that when the filtering mechanism 300 corresponds to the heat exchange cavity 102a, the outside air reaches the inner side of the inner end 302a through the discharge groove 301b-1 and the leakage groove 302a-1, and the temperature of the air inside the concentration part 203 is affected.
It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (7)
1. An air inlet unit of a gas-steam combined cycle unit is characterized in that: comprising the steps of (a) a step of,
A preheating mechanism (100) comprising a main pipe (101), a heat exchange part (102) arranged inside the main pipe (101), and a gas exchange part (103) connected with the heat exchange part (102); and
A circulation suction mechanism (200) comprising a circulation shielding part (201) arranged on the inner side of the main pipe part (101), an air inlet branch part (202) connected with the circulation shielding part (201), and a concentration part (203) connected with the air inlet branch part (202);
The heat exchange part (102) comprises a plurality of heat exchange cavities (102 a) arranged on the inner side of the main pipe part (101), and a heat exchange pipe (102 b) arranged on the inner side of the heat exchange cavities (102 a);
The gas exchange part (103) comprises a hot gas piece (103 a) communicated with one end of a heat exchange tube (102 b) and a cold gas piece (103 b) communicated with the other end of the heat exchange tube (102 b);
One end of the heat exchange cavity (102 a) is provided with an inlet (102 a-1), and the other end is provided with an outlet (102 a-2);
The hot air piece (103 a) comprises a hot air main pipe (103 a-1), a plurality of hot air branch pipes (103 a-2) arranged on the hot air main pipe (103 a-1), and a hot air port (103 a-3) arranged on the hot air main pipe (103 a-1);
the cold air piece (103 b) comprises a cold air main pipe (103 b-1), a plurality of cold air branch pipes (103 b-2) arranged on the cold air main pipe (103 b-1), and a cold air port (103 b-3) arranged on the cold air main pipe (103 b-1);
the heat exchange tube (102 b) is communicated with the hot gas main tube (103 a-1) through a hot gas branch tube (103 a-2), and the heat exchange tube (102 b) is communicated with the cold gas main tube (103 b-1) through a cold gas branch tube (103 b-2);
the circulation shielding part (201) comprises a main shaft (201 a), an air inlet shielding ring (201 b), an air outlet shielding ring (201 c) and a driving motor (201 d);
The main shaft (201 a) is provided inside the main pipe (101) and is rotatable;
the air inlet shielding ring (201 b) is arranged on the outer side of the main shaft (201 a), is attached to an inlet (102 a-1) of the heat exchange cavity (102 a), and is provided with an air inlet (201 b-1);
the air outlet shielding ring (201 c) is arranged on the outer side of the main shaft (201 a), is attached to the exhaust port (102 a-2) of the heat exchange cavity (102 a), and is provided with an air outlet (201 c-1);
the driving motor (201 d) is arranged on the inner side of the main pipe part (101) and is in transmission connection with the main shaft (201 a).
2. The gas and steam combined cycle air intake apparatus of claim 1, wherein: the air inlet (201 b-1) corresponds to the air outlet (201 c-1), the air outlet shielding ring (201 c) is provided with a connecting pipe (202 a) at each air outlet (201 c-1), and the connecting pipe (202 a) is communicated with the concentration part (203).
3. The gas and steam combined cycle air intake apparatus of claim 2, wherein: the connecting pipe (202 a) is connected with the air outlet (201 c-1) through a filtering mechanism (300); the filtering mechanism (300) comprises a filter element,
A positioning pipe section (301) fixed to the air outlet (201 c-1);
A rotation tube section (302) provided inside the positioning tube section (301) and rotatable;
A drive gear (303) provided on the rotation pipe section (302);
A filter screen (304) provided inside the rotary pipe section (302);
a circular arc rack (101 a) is arranged on the inner side of the main pipe part (101).
4. The gas and steam combined cycle air intake apparatus of claim 3, wherein: the positioning tube part (301) comprises a fixed tube end (301 a) fixed to the air outlet (201 c-1), and an expanded tube end (301 b) formed on the fixed tube end (301 a);
The rotary pipe part (302) comprises an inner end (302 a) sleeved on the inner side of the positioning pipe part (301), an extension edge (302 b) formed on the outer side of the inner pipe end, and a connecting end (302 c) formed on the end of the inner pipe end;
the built-in end (302 a) is provided with a leakage groove (302 a-1) at the expansion pipe end (301 b), the extension edge (302 b) is provided with a round groove (302 b-1), one end of the expansion pipe end (301 b) extends to the inner side of the round groove (302 b-1), and one end of the connecting pipe (202 a) is connected with the connecting end (302 c).
5. The gas and steam combined cycle air intake apparatus of claim 4, wherein: the expansion pipe end (301 b) is provided with a discharge groove (301 b-1), and the outer side of the built-in end (302 a) is provided with a discharge piece (305).
6. The gas and steam combined cycle air intake apparatus of claim 5, wherein: the discharging piece (305) comprises a vertical column (305 a) fixed on the outer side of the built-in end (302 a), a sleeve (305 b) sleeved on the outer side of the vertical column (305 a) in a sliding manner, a rubber plug (305 c) arranged at the end part of the sleeve (305 b) and a spring (305 d) sleeved on the outer side of the vertical column (305 a);
the spring (305 d) is located between the sleeve (305 b) and the outer wall of the built-in end (302 a), and one side, far away from the sleeve (305 b), of the rubber plug (305 c) is an arc surface.
7. The gas and steam combined cycle air intake apparatus of claim 6, wherein: the concentration portion (203) comprises,
A concentration pipe (203 a) arranged at one end of the main shaft (201 a), two limiting rings (203 a-1) are arranged at the inner side of the concentration pipe, and a through hole (203 a-2) is arranged at the side wall of the concentration pipe;
the half-way pipe (203 b) is sleeved on the inner side of the centralized pipe (203 a) and positioned between the two limiting rings (203 a-1), the outer side of the half-way pipe is provided with an arc through groove (203 b-1), and one side of the half-way pipe is provided with a positioning end (203 b-2);
the outer side wall of the half pipe (203 b) is attached to the inner side wall of the collecting pipe (203 a).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211404358.1A CN115717555B (en) | 2022-11-10 | 2022-11-10 | Air inlet device of gas-steam combined cycle unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404358.1A CN115717555B (en) | 2022-11-10 | 2022-11-10 | Air inlet device of gas-steam combined cycle unit |
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| CN115717555A CN115717555A (en) | 2023-02-28 |
| CN115717555B true CN115717555B (en) | 2024-09-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161607A (en) * | 2013-03-04 | 2013-06-19 | 西安交通大学 | Combined power generating system based on waste-heat utilization of combustion motor |
| CN104763535A (en) * | 2015-04-02 | 2015-07-08 | 北京京能未来燃气热电有限公司 | Method for improving efficiency of gas-steam combined cycle unit and air intake system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100502514B1 (en) * | 2003-03-04 | 2005-07-25 | 정아라 | Heat exchanger for wasted heat |
| US8051654B2 (en) * | 2008-01-31 | 2011-11-08 | General Electric Company | Reheat gas and exhaust gas regenerator system for a combined cycle power plant |
| US10323540B2 (en) * | 2015-12-07 | 2019-06-18 | General Electric Company | Gas turbine engine fluid cooling systems and methods of assembling the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161607A (en) * | 2013-03-04 | 2013-06-19 | 西安交通大学 | Combined power generating system based on waste-heat utilization of combustion motor |
| CN104763535A (en) * | 2015-04-02 | 2015-07-08 | 北京京能未来燃气热电有限公司 | Method for improving efficiency of gas-steam combined cycle unit and air intake system |
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