CN112113355A - Exhaust method and device for solar photo-thermal power generation tube - Google Patents
Exhaust method and device for solar photo-thermal power generation tube Download PDFInfo
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- CN112113355A CN112113355A CN201910541030.6A CN201910541030A CN112113355A CN 112113355 A CN112113355 A CN 112113355A CN 201910541030 A CN201910541030 A CN 201910541030A CN 112113355 A CN112113355 A CN 112113355A
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- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
- F24S40/48—Deaerating or degassing the working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/70—Sealing means
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
A solar photo-thermal power generation tube exhaust method and device are characterized in that a heating system in an exhaust device is connected to two ends of a power generation tube (2), and air molecules in the power generation tube (2) are heated; an exhaust system in the exhaust device exhausts through a tail pipe (8) of the power generation pipe (2); and after the exhaust is finished, a sealing-off electric furnace (15) connected with the tail pipe (8) heats and seals the power generation pipe (2). The heating system in the scheme heats the air molecules in the power generation tube, but not the whole power generation tube, so that the energy consumption is reduced; through directly heating the air molecule for gas thermally equivalent in the electricity generation pipe prevents because the inhomogeneous poor problem of exhaust effect that leads to of temperature field. The exhaust method provided by the scheme is easy to operate and suitable for batch production of production lines.
Description
Technical Field
The invention relates to the field of solar photo-thermal power generation equipment, in particular to an exhaust method and device for a solar photo-thermal power generation pipe.
Background
At present, a heating mode of a vacuum exhaust device of a solar photo-thermal power generation vacuum tube generally uses an oven using gas or commercial power as an energy source to heat the outside of the solar photo-thermal power generation vacuum tube, and the purpose of vacuum exhaust is achieved by vacuumizing through a vacuum unit. The method needs to integrally heat the whole power generation tube in a heating device, and the conventional equipment has the defects of huge energy consumption, serious waste, uneven temperature field, poor exhaust effect and influence on the service life of the solar photo-thermal power generation vacuum tube.
Disclosure of Invention
The invention provides an exhaust method and device for a solar photo-thermal power generation tube, and aims to solve the problems of high energy consumption and poor exhaust effect in the existing device for heating the whole power generation tube.
The technical scheme provided by the invention is as follows:
a solar photo-thermal power generation tube exhaust method comprises the following steps:
connecting a heating system in an exhaust device to two ends of the power generation pipe (2), and heating air molecules inside the power generation pipe (2);
an exhaust system in the exhaust device exhausts through a tail pipe (8) of the power generation pipe (2);
and after the exhaust is finished, a sealing-off electric furnace (15) connected with the tail pipe (8) heats and seals the power generation pipe (2).
Preferably, the connecting the heating system in the exhaust device to both ends of the power generation tube (2) and heating the air molecules inside the power generation tube (2) comprises:
installing a first heating electrode (1) and a second heating electrode (7) of the heating system at two ends of an inner pipe of the power generation pipe (2);
a central control system (11) in the exhaust device controls a heating power supply (12) in the heating system to supply power to the first heating electrode (1) and the second heating electrode (7);
the first heating electrode (1) and the second heating electrode (7) heat air molecules inside the power generation tube (2).
Preferably, the control of the heating power supply (12) in the heating system to supply power to the first heating electrode (1) and the second heating electrode (7) based on the central control system (11) for heating the air molecules inside the power generation tube (2) comprises:
a temperature sensor (5) in the central control system (11) collects temperature data of air between an inner pipe and an outer pipe of the power generation pipe (2);
based on the temperature data, a PLC automatic control module in the central control system (11) controls the temperature controller to control the heating power supply (12) to supply power when the power generation tube (2) reaches a set vacuum degree;
the heating power supply (12) heats, then keeps the temperature of and cools the air between the inner pipe and the outer pipe of the power generation pipe (2) through the first heating electrode and the second heating electrode;
the temperature sensor (5) is arranged between the inner pipe and the outer pipe of the power generation pipe (2).
Preferably, the exhaust system in the exhaust device exhausts through a tail pipe (8) of the power generation pipe (2), and comprises:
based on the control of the central control system (11), a molecular pump (9) and a mechanical pump (10) which are sequentially connected to the tail pipe (8) discharge air between the inner pipe and the outer pipe of the power generation pipe (2);
when the vacuum state between the inner pipe and the outer pipe of the power generation pipe (2) is achieved, based on the control of the central control system (11), the molecular pump (9) and the mechanical pump (10) keep the vacuum state between the inner pipe and the outer pipe of the power generation pipe (2) until the power generation pipe (2) is cooled to the normal temperature.
Preferably, the molecular pump (9) and the mechanical pump (10) which are connected to the tail pipe (8) in sequence based on the control of the central control system (11) discharge the air between the inner pipe and the outer pipe of the power generation pipe (2), and the method comprises the following steps:
a vacuum degree acquisition module in the central control system (11) acquires vacuum degree data between the power generation tubes (2);
based on the vacuum degree data, a vacuum controller in the central control system (11) controls the molecular pump (9) and the mechanical pump (10) to exhaust air between the inner pipe and the outer pipe of the power generation pipe (2).
Preferably, when the exhaust is finished, a sealing-off electric furnace (15) connected with the tail pipe (8) heats and seals the power generation pipe (2), and then the method further comprises the following steps:
and a middle PLC automatic control module of the central control system (11) controls other heating pipes (2) to sequentially enter the exhaust device for exhaust.
Preferably, the connecting the heating system to both ends of the power generation tube (2) and heating the air molecules inside the power generation tube (2) further comprises:
and the power generation pipe (2) is arranged in a heat-insulating cover (6) on an exhaust device frame (14).
An exhaust device for a solar photo-thermal power generation tube, the device comprising:
the heating system is connected to two ends of the power generation tube (2) and used for heating air molecules inside the power generation tube (2);
the exhaust system and the sealed electric furnace (15) are respectively connected with a tail pipe (8) of the power generation pipe (2);
the exhaust system is used for exhausting the power generation pipe (2);
the sealing-off electric furnace (15) is used for heating and sealing the power generation tube (2) after exhaust.
Preferably, the device further comprises a central control system (11);
the central control system (11) is connected with the heating system and the exhaust system;
the central control system (11) comprises a vacuum degree acquisition module; the vacuum degree acquisition module is arranged between the inner pipe and the outer pipe of the power generation pipe (2) and is connected with an exhaust system;
the central control system (11) is used for controlling the exhaust system to exhaust the power generation pipe (2) and controlling the heating system to heat the power generation pipe (2) when a set vacuum degree is reached.
Preferably, the central control system (11) comprises: a temperature sensor (5) and a temperature controller (13);
the temperature sensor (5) is arranged in an inner pipe of the power generation pipe (2) and is connected with the temperature controller (13);
temperature control appearance (13) with heating system connects, is used for when generating electricity pipe (2) reach the settlement vacuum, based on the temperature data control that temperature sensor (5) provided heating system heaies up earlier, back constant temperature, recooling.
Preferably, the heating system includes:
a heating power supply (12), a first heating electrode (1) and a second heating electrode (7) connected with the heating power supply (12);
the first heating electrode (1) and the second heating electrode (7) are respectively arranged at two ends of the power generation tube (2).
Preferably, the central control system (11) further comprises:
an exhaust gas controller;
and the exhaust controller is respectively connected with the vacuum degree acquisition module and the exhaust system.
Preferably, the exhaust system includes: the molecular pump (9) and the mechanical pump (10) are connected with each other, and the molecular pump (9) and the mechanical pump (10) are jointly connected with the exhaust gas controller;
the molecular pump (9) is also connected with a tail pipe (8) of the power generation pipe (2).
Preferably, the exhaust system further includes: a clamping airbag (16);
the clamping air bag (16) is arranged on the molecular pump (9) and is used for connecting the molecular pump (9) and the tail pipe (8).
Preferably, the central control system (11) further comprises: a PLC automatic control module;
the PLC automatic control module is used for controlling the heating pipes (2) to sequentially enter the device for exhausting;
and the PLC automatic control module is connected with the temperature controller (13) and the exhaust controller and is used for realizing the automatic control of the temperature controller and the exhaust controller.
Preferably, the heating power supply (12) is also connected with a temperature control instrument (13).
Preferably, the apparatus further comprises: a frame (14) and a heat-insulating cover (6);
the heating system, the exhaust system and the central control system are mounted on the frame (14);
the heat preservation cover (6) is arranged above the rack (14).
Compared with the prior art, the invention has the beneficial effects that:
the technical scheme provided by the invention comprises the following steps: connecting a heating system in an exhaust device to two ends of the power generation pipe (2), and heating air molecules inside the power generation pipe (2); an exhaust system in the exhaust device exhausts through a tail pipe (8) of the power generation pipe (2); and after the exhaust is finished, a sealing-off electric furnace (15) connected with the tail pipe (8) heats and seals the power generation pipe (2). The heating system in the scheme heats the air molecules in the power generation tube, but not the whole power generation tube, so that the energy consumption is reduced; through directly heating the air molecule for gas thermally equivalent in the electricity generation pipe prevents because the inhomogeneous poor problem of exhaust effect that leads to of temperature field. The exhaust method provided by the scheme is easy to operate and suitable for batch production of production lines.
Drawings
FIG. 1 is a structural diagram of an exhaust device of a solar photo-thermal power generation tube of the present invention;
FIG. 2 is a flow chart of a method for exhausting a solar photo-thermal power generation tube according to the present invention;
wherein, 1-a first heating electrode; 2-a power generation tube; 3-inner tube; 4-an outer tube; 5-a temperature sensor; 6-heat preservation cover; 7-a second heating electrode; 8-tail pipe; 9-a molecular pump; 10-a mechanical pump; 11-a central control system; 12-a heating power supply; a 13-degree controller; 14-a frame; 15-sealing off the electric furnace; 16-clamping the balloon.
Detailed Description
For a better understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples.
Example 1:
the embodiment provides an exhaust device for a solar photo-thermal power generation tube, and the structure of the exhaust device is shown in fig. 1.
The operation principle of the invention is as follows: the heat preservation cover 6 is opened manually, the solar photo-thermal power generation vacuum tube 2 is arranged on a support of a workbench through a mechanical arm, the exhaust tail tube 8 is inserted into a clamping air bag 16 of a molecular pump 9 and locked, the heat preservation cover 6 is closed, and the equipment starts to work according to a set process by pressing an 'operation' button on a central control system 11:
1. the mechanical pump 10 and the molecular pump 9 start to continuously vacuumize the solar photo-thermal power generation tube 2 through the tail pipe 8;
2. when the vacuum degree reaches a set value, the heating power supply 12 is automatically started to heat the solar photo-thermal power generation tube 2, and the heating process is controlled according to 'heating-heat preservation-cooling' through the temperature controller 13 and the temperature sensor 5;
3. after heating is finished, the heating system is closed, and the sealing electric furnace 15 is started to automatically seal the exhaust tail pipe 8;
4. the vacuum system is automatically closed, the heat preservation cover 6 is automatically opened, the solar photo-thermal power generation tube 2 which finishes the exhaust is taken down manually through a manipulator, and a new workpiece is loaded into the vacuum system to enter the next working cycle.
The computer detects, collects and stores various data at any time in the whole working process.
The exhaust equipment of the solar photo-thermal power generation vacuum tube comprises a heating electrode 1, a temperature sensor 5, a heat preservation cover 6, a molecular pump 9, a mechanical pump 10, a central control system 11, a heating power supply 12, a temperature controller 13, a rack 14, a sealing electric furnace 15, a clamping air bag 16 and the like.
A frame:
all adopt the frame construction, the structure is simple and clear, the rigidity is good, guarantee firm, stable, do the thermal-insulated processing with the contact site of work piece.
A vacuum pumping system:
the vacuum pump is composed of a molecular pump 9, a mechanical pump 10 and a clamping air bag 16, and a German Laibao product is selected as the vacuum pump, so that the performance is stable.
A heating system:
the inner pipe (steel pipe) 3 of the solar photo-thermal power generation vacuum pipe is used as a resistive load, a KT thyristor voltage regulator is used as a heating power supply 12, and high-precision temperature control is carried out through an island electric SHIMADEN temperature control instrument 13.
The central control system:
the vacuum degree collection device comprises a temperature collection module, a vacuum degree collection module, a PLC automatic control module and the like. The central control system can detect and store the temperature and the vacuum degree of the equipment and realize the automatic control of each functional unit.
Example 2:
the embodiment provides a solar photothermal power tube exhaust apparatus, the device includes:
the heating system is connected to two ends of the power generation tube and used for heating air molecules in the power generation tube;
the exhaust system and the sealed electric furnace 15 are respectively connected with an exhaust tail pipe 8 of the power generation pipe;
the exhaust system is used for exhausting the power generation pipe 2;
the sealing-off electric furnace 15 is used for heating and sealing the power generation tube 2 after exhausting.
The device further comprises a central control system 11;
the central control system 11 is connected with the heating system and the exhaust system;
the central control system 11 comprises a vacuum degree acquisition module; the vacuum degree acquisition module is arranged between the inner pipe and the outer pipe of the power generation pipe 2 and is connected with an exhaust system;
the central control system 11 is configured to control the exhaust system to exhaust the power generation tube 2, and control the heating system to heat the power generation tube 2 when a set vacuum degree is reached.
The central control system 11 includes: a temperature sensor 5 and a temperature controller 13;
the temperature sensor 5 is arranged in the inner pipe of the power generation pipe 2 and is connected with the temperature controller 13;
the temperature controller 13 is connected to the heating system, and is configured to control the heating system to warm up first, keep the temperature of the heating system constant, and cool down again based on the temperature data provided by the temperature sensor 5 when the power generation tube 2 reaches a set vacuum degree.
The heating system, comprising:
a heating power supply 12, a first heating electrode 1 and a second heating electrode 7 connected with the heating power supply 12;
the first heating electrode 1 and the second heating electrode 7 are respectively arranged at two ends of the power generation tube 2.
The central control system 11 further includes:
an exhaust gas controller;
and the exhaust controller is respectively connected with the vacuum degree acquisition module and the exhaust system.
The exhaust system includes: the molecular pump 9 and the mechanical pump 10 are connected with each other, and the molecular pump 9 and the mechanical pump 10 are connected with the exhaust gas controller together;
the molecular pump 9 is also connected to the tail pipe 8 of the power generation pipe 2.
The exhaust system further includes: a clamping bladder 16;
the clamping airbag 16 is mounted on the molecular pump 9 and is used for connecting the molecular pump 9 and the tail pipe 8.
The device, still include: a frame 14 and a heat-insulating cover 6;
the heating system, the exhaust system and the central control system are mounted on the rack 14;
the heat-insulating cover 6 is arranged above the frame 14.
The central control system 11 further includes: a PLC automatic control module;
the PLC automatic control module is used for controlling the heating pipes 2 to sequentially enter the device for exhausting;
and the PLC automatic control module is connected with the temperature controller and the exhaust controller and is used for realizing the automatic control of the temperature controller and the exhaust controller.
The heating power supply 12 is also connected with a temperature controller 13.
Example 3:
the embodiment provides a method for exhausting a solar photo-thermal power generation tube, and a flow chart of the method is shown in fig. 2, and the method comprises the following steps:
connecting a heating system in an exhaust device to two ends of the power generation tube 2, and heating air molecules in the power generation tube 2;
the exhaust system in the exhaust device exhausts through a tail pipe 8 of the power generation pipe 2;
after the exhaust is finished, the power generation pipe 2 is heated and sealed by a sealing-off electric furnace 15 connected with the tail pipe 8.
The connecting the heating system in the exhaust device at both ends of the power generation pipe 2 and heating the air molecules inside the power generation pipe 2 includes:
installing a first heating electrode 1 and a second heating electrode 7 of the heating system at two ends of an inner pipe of the power generation pipe 2;
a central control system 11 in the exhaust device controls a heating power supply 12 in the heating system to supply power to the first heating electrode 1 and the second heating electrode 7;
the first heating electrode 1 and the second heating electrode 7 heat air molecules inside the power generation tube 2.
The method is characterized in that a central control system 11 is used for controlling a heating power supply 12 in the heating system to supply power to the first heating electrode 1 and the second heating electrode 7 to heat air molecules inside the power generation tube 2, and comprises the following steps:
the temperature sensor 5 in the central control system 11 collects the temperature data of the air between the inner pipe and the outer pipe of the power generation pipe 2;
based on the temperature data, a PLC automatic control module in the central control system 11 controls the temperature controller to control the heating power supply 12 to supply power when the power generation tube 2 reaches a set vacuum degree;
the heating power supply 12 heats, then keeps the temperature of and cools the air between the inner pipe and the outer pipe of the power generation pipe 2 through the first heating electrode and the second heating electrode;
the temperature sensor 5 is installed between the inner pipe and the outer pipe of the power generation pipe 2.
The exhaust system in the exhaust device exhausts through a tail pipe 8 of the power generation pipe 2, and comprises:
based on the control of the central control system 11, a molecular pump 9 and a mechanical pump 10 which are connected to the tail pipe 8 in sequence discharge air between the inner pipe and the outer pipe of the power generation pipe 2;
when the vacuum state between the inner pipe and the outer pipe of the power generation pipe 2 is reached, the molecular pump 9 and the mechanical pump 10 keep the vacuum state between the inner pipe and the outer pipe of the power generation pipe 2 until the power generation pipe 2 is cooled to normal temperature based on the control of the central control system 11.
The molecular pump 9 and the mechanical pump 10 sequentially connected to the tail pipe 8 to discharge the air between the inner pipe and the outer pipe of the power generation pipe 2 based on the control of the central control system 11 include:
a vacuum degree acquisition module in the central control system 11 acquires vacuum degree data between the power generation tubes 2;
based on the vacuum level data, the vacuum controller in the central control system 11 controls the molecular pump 9 and the mechanical pump 10 to exhaust the air between the inner tube and the outer tube of the power generation tube 2.
When the exhaust is completed, the electric furnace 15 connected with the tail pipe 8 is used for heating and sealing the power generation pipe 2, and then the electric furnace further comprises:
and a middle PLC automatic control module of the central control system 11 controls other heating pipes 2 to sequentially enter the exhaust device for exhaust.
The connecting heating system at two ends of the power generation tube 2 and heating the air molecules inside the power generation tube 2, before further comprising:
the power generation tube 2 is mounted in a heat-insulating cover 6 on an exhaust device frame 14.
It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (10)
1. The exhaust method for the solar photo-thermal power generation tube is characterized by comprising the following steps:
connecting a heating system in an exhaust device to two ends of the power generation pipe (2), and heating air molecules inside the power generation pipe (2);
an exhaust system in the exhaust device exhausts through a tail pipe (8) of the power generation pipe (2);
and after the exhaust is finished, a sealing-off electric furnace (15) connected with the tail pipe (8) heats and seals the power generation pipe (2).
2. The method according to claim 1, wherein the connecting the heating system in the exhaust device to both ends of the power generation tube (2) and heating the air molecules inside the power generation tube (2) comprises:
installing a first heating electrode (1) and a second heating electrode (7) of the heating system at two ends of an inner pipe of the power generation pipe (2);
a central control system (11) in the exhaust device controls a heating power supply (12) in the heating system to supply power to the first heating electrode (1) and the second heating electrode (7);
the first heating electrode (1) and the second heating electrode (7) heat air molecules inside the power generation tube (2).
3. The method according to claim 2, wherein the controlling a heating power source (12) in the heating system to supply power to the first heating electrode (1) and the second heating electrode (7) based on a central control system (11) to heat air molecules inside the power generation tube (2) comprises:
a temperature sensor (5) in the central control system (11) collects temperature data of air between an inner pipe and an outer pipe of the power generation pipe (2);
based on the temperature data, a PLC automatic control module in the central control system (11) controls the temperature controller to control the heating power supply (12) to supply power when the power generation tube (2) reaches a set vacuum degree;
the heating power supply (12) heats, then keeps the temperature of and cools the air between the inner pipe and the outer pipe of the power generation pipe (2) through the first heating electrode and the second heating electrode;
the temperature sensor (5) is arranged between the inner pipe and the outer pipe of the power generation pipe (2).
4. The method according to claim 3, wherein the exhaust system in the exhaust device exhausts through a tail pipe (8) of the power generation pipe (2), comprising:
based on the control of the central control system (11), a molecular pump (9) and a mechanical pump (10) which are sequentially connected to the tail pipe (8) discharge air between the inner pipe and the outer pipe of the power generation pipe (2);
when the vacuum state between the inner pipe and the outer pipe of the power generation pipe (2) is achieved, based on the control of the central control system (11), the molecular pump (9) and the mechanical pump (10) keep the vacuum state between the inner pipe and the outer pipe of the power generation pipe (2) until the power generation pipe (2) is cooled to the normal temperature.
5. The method according to claim 4, wherein the discharging of air between the inner and outer tubes of the power generation tube (2) by a molecular pump (9) and a mechanical pump (10) connected in sequence to the tailpipe (8) based on the control of the central control system (11) comprises:
a vacuum degree acquisition module in the central control system (11) acquires vacuum degree data between the power generation tubes (2);
based on the vacuum degree data, a vacuum controller in the central control system (11) controls the molecular pump (9) and the mechanical pump (10) to exhaust air between the inner pipe and the outer pipe of the power generation pipe (2).
6. The method according to claim 5, wherein the electric seal-off furnace (15) connected to the tail pipe (8) heat seals the power generation tube (2) when the exhaust is completed, and thereafter further comprising:
and a middle PLC automatic control module of the central control system (11) controls other heating pipes (2) to sequentially enter the exhaust device for exhaust.
7. The method according to claim 1, wherein said connecting a heating system at both ends of said power generation tube (2) and heating the air molecules inside said power generation tube (2) further comprises:
and the power generation pipe (2) is arranged in a heat-insulating cover (6) on an exhaust device frame (14).
8. The utility model provides a solar photothermal power generation pipe exhaust apparatus, its characterized in that, the device includes:
the heating system is connected to two ends of the power generation tube (2) and used for heating air molecules inside the power generation tube (2);
the exhaust system and the sealed electric furnace (15) are respectively connected with a tail pipe (8) of the power generation pipe (2);
the exhaust system is used for exhausting the power generation pipe (2);
the sealing-off electric furnace (15) is used for heating and sealing the power generation tube (2) after exhaust.
Preferably, the device further comprises a central control system (11);
the central control system (11) is connected with the heating system and the exhaust system;
the central control system (11) comprises a vacuum degree acquisition module; the vacuum degree acquisition module is arranged between the inner pipe and the outer pipe of the power generation pipe (2) and is connected with an exhaust system;
the central control system (11) is used for controlling the exhaust system to exhaust the power generation pipe (2) and controlling the heating system to heat the power generation pipe (2) when a set vacuum degree is reached.
Preferably, the central control system (11) comprises: a temperature sensor (5) and a temperature controller (13);
the temperature sensor (5) is arranged in an inner pipe of the power generation pipe (2) and is connected with the temperature controller (13);
temperature control appearance (13) with heating system connects, is used for when generating electricity pipe (2) reach the settlement vacuum, based on the temperature data control that temperature sensor (5) provided heating system heaies up earlier, back constant temperature, recooling.
Preferably, the heating system includes:
a heating power supply (12), a first heating electrode (1) and a second heating electrode (7) connected with the heating power supply (12);
the first heating electrode (1) and the second heating electrode (7) are respectively arranged at two ends of the power generation tube (2).
9. The apparatus according to claim 8, wherein said central control system (11) further comprises:
an exhaust gas controller;
and the exhaust controller is respectively connected with the vacuum degree acquisition module and the exhaust system.
Preferably, the exhaust system includes: the molecular pump (9) and the mechanical pump (10) are connected with each other, and the molecular pump (9) and the mechanical pump (10) are jointly connected with the exhaust gas controller;
the molecular pump (9) is also connected with a tail pipe (8) of the power generation pipe (2).
Preferably, the exhaust system further includes: a clamping airbag (16);
the clamping air bag (16) is arranged on the molecular pump (9) and is used for connecting the molecular pump (9) and the tail pipe (8).
Preferably, the central control system (11) further comprises: a PLC automatic control module;
the PLC automatic control module is used for controlling the heating pipes (2) to sequentially enter the device for exhausting;
and the PLC automatic control module is connected with the temperature controller (13) and the exhaust controller and is used for realizing the automatic control of the temperature controller and the exhaust controller.
Preferably, the heating power supply (12) is also connected with a temperature control instrument (13).
10. The apparatus of claim 8, wherein the apparatus further comprises: a frame (14) and a heat-insulating cover (6);
the heating system, the exhaust system and the central control system are mounted on the frame (14);
the heat preservation cover (6) is arranged above the rack (14).
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| CN201910541030.6A CN112113355A (en) | 2019-06-21 | 2019-06-21 | Exhaust method and device for solar photo-thermal power generation tube |
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