CN113446584A - Power plant boiler water circulation system - Google Patents
Power plant boiler water circulation system Download PDFInfo
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- CN113446584A CN113446584A CN202110706781.6A CN202110706781A CN113446584A CN 113446584 A CN113446584 A CN 113446584A CN 202110706781 A CN202110706781 A CN 202110706781A CN 113446584 A CN113446584 A CN 113446584A
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- steam
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- power plant
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- circulation system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/34—Adaptations of boilers for promoting water circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a power plant boiler water circulation system, which comprises a circulation unit, a water drainage unit and a recovery unit, wherein the circulation unit comprises a steam generation unit, a water drainage unit and the recovery unit which are mutually connected through pipelines; and the heat exchange unit comprises a pipe box and a ventilation pipeline arranged in the pipe box. The power plant boiler water circulation system provided by the invention can recycle water resources and heat energy in the boiler combustion process, reduces energy loss, saves energy, is environment-friendly; the primary air fed into the boiler to ignite the pulverized coal can be heated through the heat exchange unit, so that the problem that the primary air is easy to combust unstably due to low furnace temperature at the initial ignition stage is solved; the tube box and the tube bundle of the heat exchange unit are easy to disassemble, so that the parts which are easy to scale are convenient to clean, and the service life of the device is prolonged.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a power plant boiler water circulation system.
Background
At present, pulverized coal boilers are widely applied to thermal power plants, the reasons influencing pulverized coal combustion are various and are related to various factors such as fuel, a combustor, a hearth and boiler operation conditions, and at the initial ignition stage of the boiler of the thermal power plant, due to low furnace temperature, pulverized coal cannot be normally ignited after being put into the boiler, so that the boiler combustion is unstable, even deflagration phenomenon occurs, and the safe operation of a unit in starting is seriously influenced. Therefore, the rapid increase of the temperature of the pulverized coal is an effective way for solving unstable combustion in the initial ignition stage of the boiler, generally, when the pulverized coal is combusted, tertiary air is needed, the increase of the temperature of primary air can reduce ignition heat, the premise of the ignition position is provided, the pulverized coal can be stably combusted under the condition of low load, and the increase of the temperature of primary air is also a measure for improving the ignition speed and the ignition stability of the pulverized coal. Therefore, a water circulation system of a power plant boiler is needed, which can heat primary air, improve combustion efficiency, save energy and recycle redundant heat resources of the power plant boiler.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the conventional ignition process of a boiler of a thermal power plant.
Therefore, the invention aims to solve the problem that a power plant boiler water circulation system is needed to solve the problems of unstable combustion and waste of heat resources in the initial ignition stage of the existing power plant boiler.
In order to solve the technical problems, the invention provides the following technical scheme: a power plant boiler water circulation system comprises a circulation unit, a steam generation unit, a drainage unit and a recovery unit, wherein the circulation unit comprises the steam generation unit, the drainage unit and the recovery unit which are mutually connected through pipelines; and the heat exchange unit comprises a pipe box and a ventilation pipeline arranged in the pipe box.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the steam generating unit comprises a steam boiler, a combustor and a smoke exhauster, wherein the steam boiler is provided with a pure water inlet and a steam outlet.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the utility model discloses a drainage unit, including hydrophobic unit, steam outlet, hot steam outlet, water conservancy diversion spare, drainage unit inner wall still is equipped with round turbulent flow ring, the inside cavity of water conservancy diversion spare and lateral wall pass hydrophobic unit shell and with the hot steam outlet communicates with each other, the water conservancy diversion spare is close to the one end of water conservancy diversion outlet is opening and outer wall cover and is equipped with turbine fan blade.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the heat exchange unit is provided with a steam inlet and a steam outlet, the recovery unit comprises a water storage tank and a condensate water recovery pump which are communicated with each other, the steam outlet is connected to the steam inlet, the hot steam outlet is connected to the steam inlet, and the condensate water outlet is communicated with the steam outlet and communicated with the water storage tank.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the pipe case includes pipe case casing and connects the pipe case head of pipe case casing one end, the ventilation pipeline includes the tube bank and connects respectively the tube bank joint and the tube bank head at tube bank both ends, pipe case casing is hollow cylinder structure and both ends opening, pipe case casing opening both ends divide into business turn over end and blind end, the blind end diameter is greater than business turn over end, the tube bank head is the hollow hemisphere body structure, the blind end with the tube bank head passes through flange joint.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the tube bundle connector comprises a connector end and a steam guide end, the tube bundle connector is connected with the inlet and outlet end through a flange, the connector end is located outside the tube box shell, and the steam guide end is located in the tube box shell. The joint end is of a hollow cylindrical structure, a first partition plate is arranged in the joint end to divide the inner space of the joint end into an air inlet chamber and an air outlet chamber which are not communicated, the air inlet chamber and the air outlet chamber are arranged, and an air inlet and an air outlet are respectively formed in the side wall of the tube box shell.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the air inlet chamber and the air outlet chamber face one side of the steam guide end, a plurality of vent holes are uniformly distributed in the air inlet chamber and the air outlet chamber, the pipe bundle is a plurality of straight pipes, one end of the pipe bundle is connected with the vent holes, the steam guide end is further provided with a second partition plate connected with the joint end, and the second partition plate divides the pipe bundle into an air inlet pipe and an air outlet pipe.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: still evenly be equipped with a plurality of first guide plates and second guide plate on the second baffle, first guide plate and second guide plate cup joint on the tube bank and crisscross the setting, the side of first guide plate and second guide plate all with the laminating of pipe case casing, first guide plate with be equipped with the breach between the pipe case casing, the second guide plate with be equipped with the breach between the second baffle.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the tube bank head includes spherical head and pipe shrouding, the blind end inner wall of pipe case casing is equipped with a plurality of first screw holes, the edge of spherical head one end is equipped with a plurality of second screw holes, the edge of pipe shrouding is equipped with a plurality of third screw holes, first screw hole, second screw hole, third screw hole all are even circumference distribution, first screw hole, second screw hole, third screw hole cooperation are connected, the pipe shrouding is located spherical head with between the first screw hole.
As a preferable scheme of the power plant boiler water circulation system, the power plant boiler water circulation system comprises the following components: the spherical end socket is hemispherical and is internally provided with a plurality of arc-shaped channels which are not communicated and evenly distributed, the arc-shaped channels are communicated with the tube bundle, the outer side wall of the spherical end socket is of an even toothed structure, the tube sealing plate is sleeved on the tube bundle, and the middle part of the tube sealing plate is also connected with the second partition plate.
The invention has the beneficial effects that: the power plant boiler water circulation system provided by the invention can recycle water resources and heat energy in the boiler combustion process, reduces energy loss, saves energy, is environment-friendly; the primary air fed into the boiler to ignite the pulverized coal can be heated through the heat exchange unit, so that the problem that the primary air is easy to combust unstably due to low furnace temperature at the initial ignition stage is solved; the tube box and the tube bundle of the heat exchange unit are easy to disassemble, so that the parts which are easy to scale are convenient to clean, and the service life of the device is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic diagram of the overall structure of a power plant boiler water circulation system.
FIG. 2 is a sectional structure view of a water-draining unit in a water circulation system of a power plant boiler.
FIG. 3 is a schematic view of the overall assembly of a heat exchange unit in a boiler water circulation system of a power plant.
FIG. 4 is a structure diagram of a ventilation pipeline in a heat exchange unit in a water circulation system of a power plant boiler.
FIG. 5 is a structural diagram of an inner tube bundle end socket of a heat exchange unit in a power plant boiler water circulation system.
FIG. 6 is a sectional structure view of a heat exchange unit in a boiler water circulation system of a power plant.
FIG. 7 is a schematic diagram illustrating the flow direction of the shell side fluid in the heat exchange unit in the water circulation system of the power plant boiler.
FIG. 8 is a schematic diagram illustrating the flow direction of the tube pass fluid in the heat exchange unit of the boiler water circulation system of the power plant.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
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 than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is 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.
Example 1
Referring to fig. 1 and 2, a first embodiment of the present invention provides a power plant boiler water circulation system, including a circulation unit 100 including a steam generation unit 101, a water drainage unit 102, and a recovery unit 103 connected to each other by pipes; and the heat exchange unit 200 comprises a pipe box 201 and a ventilation pipeline 202 arranged in the pipe box 201.
Specifically, the steam generation unit 101 comprises a steam boiler 101a, a combustor 101b and a smoke exhauster 101c, wherein the steam boiler 101a is provided with a pure water inlet 101a-1 and a steam outlet 101 a-2. The burner supplies heat to the power plant boiler and other equipment, and generates water vapor, and the flue gas and the like are discharged from the smoke exhauster 101 c.
Further, the water drainage unit 102 is a hollow shell, a steam inlet 102a, a hot steam outlet 102b and a condensed water outlet 102c are arranged on the water drainage unit 102, a flow guide member 102d is arranged in the middle of the inside of the water drainage unit 102, a circle of turbulent flow ring 102e is further arranged on the inner wall of the water drainage unit 102, the flow guide member 102d is hollow, the side wall of the flow guide member 102d penetrates through the outer shell of the water drainage unit 102 and is communicated with the hot steam outlet 102b, one end, close to the condensed water outlet 102c, of the flow guide member 102d is an opening, and the outer wall of the flow guide member is sleeved with a turbine fan blade 102 c-1. Steam enters the water drainage unit 102 from the steam inlet 102a, is scattered to the four walls under the action of the flow guide piece 102d, then the flow of the steam is accelerated by the turbulence ring 102e, and finally the turbine fan blades 102c-1 are driven to further disperse the steam, larger liquid drops are condensed together and discharged through the condensed water outlet 102c, and drier steam is discharged to the heat exchange unit 200 through the hot steam outlet 102 b. Wherein, the diversion piece 102d is in a shuttle shape, a plurality of wing-shaped connecting columns are arranged between the side wall of the diversion piece and the water drainage unit 102, and one connecting column is hollow and connected with the hot steam outlet 102 b. A circle of conical ring is arranged in the hollow flow guide piece 102d, the smaller end of the conical ring faces the opening of the flow guide piece 102d, and the front end of the conical ring is additionally provided with a fusiform flow guide block which can further filter out liquid drops.
Still further, a steam inlet 200a and a steam outlet 200b are arranged on the heat exchange unit 200, the recovery unit 103 comprises a water storage tank 103a and a condensed water recovery pump 103b which are communicated with each other, the steam outlet 101a-2 is connected to the steam inlet 102a, the hot steam outlet 102b is connected to the steam inlet 200a, and the condensed water outlet 102c is communicated with the steam outlet 200b and leads to the water storage tank 103 a.
In this embodiment, the steam generation unit 101 heats water to generate steam for use by each component of the power plant, a part of the steam flows into the water drainage unit 102, the water drainage unit 102 separates liquid carried in the steam to form condensed water for backflow, and the dried steam enters the heat exchange unit 200 to heat primary air, so as to ensure sufficient combustion of pulverized coal. The steam discharged from the heat exchange unit 200 enters the recovery unit 103 to be condensed, the excess steam flows back to the drainage unit 102 to be recycled, and the condensed water is stored in the recovery unit 103 and pumped to the steam generation unit 101 by the water pump to be recycled.
Example 2
Referring to fig. 3 to 8, a second embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that: also included is a heat exchange unit 200 that can warm the primary air that ignites the pulverized coal, while providing a path for steam circulation.
The power plant boiler water circulation system comprises a pipe box 201 for providing a steam flow path, and a ventilation pipeline 202 for passing primary air, wherein a part of the ventilation pipeline 202 is positioned inside the pipe box 201, so that steam and the primary air exchange heat. The channel 201 comprises a channel shell 201a and a channel end enclosure 201b connected to one end of the channel shell 201 a; the ventilation pipe 202 is connected with the pipe box 201 in a matching way and comprises a pipe bundle 202a, and a pipe bundle joint 202b and a pipe bundle end enclosure 202c which are respectively connected with two ends of the pipe bundle 202 a.
Specifically, the tube box shell 201a is a hollow cylindrical structure, two ends of the tube box shell 201a are open, two ends of the open end of the tube box shell 201a are an inlet end 201a-1 and a closed end 201a-2, the diameter of the closed end 201a-2 is larger than that of the inlet end 201a-1, the tube box end enclosure 201b is a hollow hemispherical structure, and the closed end 201a-2 is connected with the tube box end enclosure 201b through a flange. Steam enters from the steam inlet 200a, and is exhausted from the steam outlet 200b after going through a cycle in the tube box shell 201a, and when the steam passes through the closed end 201a-2, the steam enters from a smaller tube diameter to a larger tube diameter, the flow rate of the steam is correspondingly slowed down, and the flow time of the steam in the tube box end enclosure 201b is also prolonged.
Further, the tube bundle joint 202b comprises a joint end 202b-1 and a steam leading end 202b-2, the tube bundle joint 202b is in flange connection with the inlet and outlet end 201a-1, the joint end 202b-1 is located outside the tube box shell 201a, and the steam leading end 202b-2 is located inside the tube box shell 201 a. When the tube bundle connector 202b is connected to the tube box housing 201a, both ends of the tube box housing 201a are closed.
Still further, the joint end 202B-1 is a hollow cylindrical structure, a first partition plate B-1 is arranged in the joint end 202B-1 to divide the inner space of the joint end 202B-1 into an air inlet chamber R-1 and an air outlet chamber R-2 which are not communicated, and the side walls of the air inlet chamber R-1 and the air outlet chamber R-2 are respectively provided with an air inlet 201a-3 and an air outlet 201 a-4. A plurality of vent holes K are uniformly distributed on one sides of the air inlet chamber R-1 and the air outlet chamber R-2 facing the steam guide end 202B-2, the pipe bundle 202a is a plurality of straight pipes, one end of the pipe bundle 202a is connected with the vent holes K, the steam guide end 202B-2 is also provided with a second partition plate B-2 connected with the joint end 202B-1, and the second partition plate B-2 divides the pipe bundle 202a into an air inlet pipe 201a and an air outlet pipe 201B. Air enters the air inlet chamber R-1 from the air inlet 201a-3 and enters the air inlet pipe 201a from the vent hole K under the blocking of the first partition plate B-1; similarly, air to be discharged enters the air outlet chamber R-2 from the air outlet pipe 201b through the vent hole K, and then flows out of the air outlet 201a-4 to enter the boiler.
The second baffle plate B-2 is also uniformly provided with a plurality of first guide plates D-1 and second guide plates D-2, the first guide plates D-1 and the second guide plates D-2 are sleeved on the tube bundle 202a and are arranged in a staggered manner, the side edges of the first guide plates D-1 and the second guide plates D-2 are both attached to the tube box shell 201a, a gap is arranged between the first guide plates D-1 and the tube box shell 201a, and a gap is arranged between the second guide plates D-2 and the second baffle plate B-2. Referring to fig. 7, the first guide plate D-1 and the second guide plate D-2 are arranged in a staggered manner, and the positions of the notches are different, so that steam flows in a zigzag manner between the guide plates, the steam can be in full contact with the tube bundle 202a, the time of heat exchange is prolonged, and the improvement of primary air temperature is facilitated.
In addition, referring to fig. 4 to 6, the tube bundle end enclosure 202c includes a spherical end enclosure 202c-1 and a tube enclosure plate 202c-2, the inner wall of the closed end 201a-2 of the tube box shell 201a is provided with a plurality of first threaded holes L-1, the edge of one end of the spherical end enclosure 202c-1 is provided with a plurality of second threaded holes L-2, the edge of the tube enclosure plate 202c-2 is provided with a plurality of third threaded holes L-3, the first threaded holes L-1, the second threaded holes L-2 and the third threaded holes L-3 are uniformly and circumferentially distributed, the first threaded holes L-1, the second threaded holes L-2 and the third threaded holes L-3 are connected in a matching manner, and each threaded hole is provided with a certain gap so that steam can pass through the gap. The tube sealing plate 202c-2 is positioned between the spherical end enclosure and the first threaded hole L-1, two sides of the tube sealing plate 202c-2 are provided with convex structures, one side facing the tube bundle 202a is a circular convex, and the circular convex structures are embedded between the first threaded holes L-1 to form sealing; the other side is provided with a plurality of strip-shaped bulges, the shape of the strip-shaped bulges is consistent with the shape of the hole reserved on the round surface of the spherical seal head 202c-1, when the spherical seal head 202c-1 is connected with the pipe seal plate 202c-2, the strip-shaped bulges are embedded on the hole on the round surface of the spherical seal head 202c-1, and one end of the pipe bundle 202a is completely connected in the strip-shaped bulges to form sealing. The tube sealing plate 202c-2 is sleeved on the tube bundle 202a, the middle part of the tube sealing plate 202c-2 is also connected with the second partition plate B-2, grooves at two ends are further arranged on the inner wall of the closed end 201a-2 of the tube box shell 201a, and the edge of the second partition plate B-2 is positioned in the groove on the inner wall of the closed end 201a-2, so that steam is always separated into two parts during circulation and can completely enter the tube box end enclosure 201B.
Further, the spherical head 202c-1 is hemispherical, a plurality of arc-shaped channels which are not communicated are uniformly distributed in the spherical head 202c-1, the arc-shaped channels are communicated with the tube bundle 202a, the outer side wall of the spherical head 202c-1 is of a uniform grid-shaped structure, when steam enters the tube box head 201b, the steam is diffused among the grid-shaped structures of the spherical head 202c-1 under the blocking effect of the tube box head 201b, so that the steam and the spherical head 202c-1 can be fully subjected to heat exchange, and because the spherical head 202c-1 is separated, the air entering the spherical head 202c-1 from the tube bundle 202a is relatively less, and the heat exchange can be fully operated by increasing the contact area and reducing the heat exchange medium mode.
In this embodiment, since each component is a detachable structure, when the tube box 201 or the tube bundle 202a is fouled due to long use, the relevant component can be detached for replacement and cleaning. In addition, both ends and the middle part of tube bank 202a are all fixed under the effect of guide plate and head, and when the device was moved, can reduce the holistic vibration of tube bank 202a to reduce the noise that the vibration produced.
The principle of the invention is simple and clear, and the invention has the advantages of easy operation, energy saving, environmental protection and the like, and the boiler water circulation system of the power plant provided by the invention can heat primary air which is sent into a boiler to ignite pulverized coal, thereby avoiding the problem that the boiler is easy to burn unstably due to lower temperature at the initial stage of ignition; the heating steam adopted by the invention adopts circulating steam in the use process of the boiler, so that the energy consumption is reduced, the energy is saved, the environment is protected, the pipe box and the pipe bundle are easy to disassemble, the part easy to scale inside is convenient to clean, and the service life of the device is prolonged.
It is important to note that the construction and arrangement of the present 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., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited 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 this invention. 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 inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, 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 unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling 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, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a power plant's boiler water circulating system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a circulation unit (100) including a steam generation unit (101), a water drainage unit (102), and a recovery unit (103) connected to each other by a pipe; and the number of the first and second groups,
the heat exchange unit (200) comprises a pipe box (201) and a ventilation pipeline (202) arranged in the pipe box (201).
2. The power plant boiler water circulation system of claim 1, wherein: the steam generating unit (101) comprises a steam boiler (101a), a combustor (101b) and a smoke exhauster (101c), wherein the steam boiler (101a) is provided with a pure water inlet (101a-1) and a steam outlet (101 a-2).
3. The power plant boiler water circulation system of claim 2, wherein: the water drainage unit (102) is a hollow shell, a steam inlet (102a), a hot steam outlet (102b) and a condensed water outlet (102c) are formed in the water drainage unit (102), a flow guide piece (102d) is arranged in the middle of the inside of the water drainage unit (102), a circle of flow disturbing ring (102e) is further arranged on the inner wall of the water drainage unit (102), the inside of the flow guide piece (102d) is hollow, the side wall of the flow guide piece (102d) penetrates through the shell of the water drainage unit (102) and is communicated with the hot steam outlet (102b), one end, close to the condensed water outlet (102c), of the flow guide piece (102d) is an opening, and a turbine fan blade (102c-1) is sleeved on the outer wall of the flow guide piece (102 d).
4. A power plant boiler water circulation system as claimed in claim 3, characterized in that: the heat exchange unit (200) is provided with a steam inlet (200a) and a steam outlet (200b), the recovery unit (103) comprises a water storage tank (103a) and a condensed water recovery pump (103b) which are communicated with each other, the steam outlet (101a-2) is connected to the steam inlet (102a), the hot steam outlet (102b) is connected to the steam inlet (200a), and the condensed water outlet (102c) is communicated with the steam outlet (200b) and communicated with the water storage tank (103 a).
5. The power plant boiler water circulation system of claim 4, wherein: the tube box (201) comprises a tube box shell (201a) and tube box end sockets (201b) connected to one end of the tube box shell (201a), the ventilation pipeline (202) comprises a tube bundle (202a) and tube bundle connectors (202b) and tube bundle end sockets (202c) which are connected to two ends of the tube bundle (202a), the tube box shell (201a) is of a hollow cylindrical structure and is provided with openings at two ends, two ends of the opening of the tube box shell (201a) are divided into an inlet end (201a-1) and a closed end (201a-2), the diameter of the closed end (201a-2) is larger than that of the inlet end (201a-1), the tube box end sockets (202c) are of a hollow hemispherical structure, and the closed end (201a-2) is connected with the tube bundle end sockets (202c) through flanges.
6. The power plant boiler water circulation system of claim 5, wherein: the tube bundle joint (202b) comprises a joint end (202b-1) and a steam guide end (202b-2), the tube bundle joint (202b) is in flange connection with the inlet and outlet end (201a-1), the joint end (202b-1) is located outside the tube box shell (201a), and the steam guide end (202b-2) is located inside the tube box shell (201 a). The joint end (202B-1) is of a hollow cylindrical structure, a first partition plate (B-1) is arranged in the joint end (202B-1) to divide the inner space of the joint end (202B-1) into an air inlet chamber (R-1) and an air outlet chamber (R-2) which are not communicated, the air inlet chamber (R-1) and the air outlet chamber (R-2) are arranged, and the side wall of the tube box shell (201a) is further provided with an air inlet (201a-3) and an air outlet (201 a-4).
7. The power plant boiler water circulation system of claim 6, wherein: a plurality of vent holes (K) are uniformly distributed in one side, facing the steam guide end (202B-2), of the air inlet chamber (R-1) and the air outlet chamber (R-2), the pipe bundle (202B) is a plurality of straight pipes, one end of the pipe bundle (202B) is connected with the vent holes (K), the steam guide end (202B-2) is further provided with a second partition plate (B-2) connected with the joint end (202B-1), and the pipe bundle (202B) is divided into an air inlet pipe (G-1) and an air outlet pipe (G-1) by the second partition plate (B-2).
8. The power plant boiler water circulation system of claim 7, wherein: the tube box is characterized in that a plurality of first guide plates (D-1) and second guide plates (D-2) are further uniformly arranged on the second partition plate (B-2), the first guide plates (D-1) and the second guide plates (D-2) are sleeved on the tube bundle (202B) and are arranged in a staggered mode, the side edges of the first guide plates (D-1) and the second guide plates (D-2) are attached to the tube box shell (201a), a gap is formed between the first guide plates (D-1) and the tube box shell (201a), and a gap is formed between the second guide plates (D-2) and the second partition plate (B-2).
9. The power plant boiler water circulation system of claim 8, wherein: the tube bundle end socket (202c) comprises a spherical end socket (202c-1) and a tube sealing plate (202c-2), the inner wall of the closed end (201a-2) of the tube box shell (201a) is provided with a plurality of first threaded holes (L-1), the edge of one end of the spherical seal head (202c-1) is provided with a plurality of second threaded holes (L-2), the edge of the tube sealing plate (202) is provided with a plurality of third threaded holes (L-3), the first threaded holes (L-1), the second threaded holes (L-2) and the third threaded holes (L-3) are uniformly and circumferentially distributed, the first threaded hole (L-1), the second threaded hole (L-2) and the third threaded hole (L-3) are connected in a matching way, the pipe closing plate (202c-2) is located between the spherical end socket and the first threaded hole (L-1).
10. The power plant boiler water circulation system of claim 9, wherein: the spherical end socket (202c-1) is hemispherical, a plurality of arc-shaped channels which are not communicated are uniformly distributed in the spherical end socket (202c-1), the arc-shaped channels are communicated with the tube bundle (202a), the outer side wall of the spherical end socket (202c-1) is of an even toothed sheet structure, the tube sealing plate (202c-2) is sleeved on the tube bundle (202a), and the middle of the tube sealing plate (202c-2) is also connected with the second partition plate (B-2).
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| CN202110706781.6A CN113446584A (en) | 2021-06-24 | 2021-06-24 | Power plant boiler water circulation system |
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