CN209399593U - Air-water combined dust removal device for trough solar concentrator - Google Patents

Abstract

The utility model provides an air-water combined dedusting device for a trough-type solar concentrator. The dedusting device includes a support assembly used to connect with a track system. A number of nozzles are arranged at intervals in the direction, and the support assembly is equipped with a reciprocating linear drive mechanism to drive the dust removal pipe to reciprocate linearly along the direction across the condenser and a swing mechanism to drive the dust removal pipe to swing. The dust removal pipe is connected to the water supply system and the air supply system through a hose . The dust removal method adopted by the utility model can carry out dust removal operation on the mirror surface of the trough solar concentrator in real time, and the airflow or water flow ejected from the nozzle of the dust removal pipe can realize the cleaning of the concentrator surface. The overall structure is simple and the cleaning effect is good. When this device When connected to the corresponding rail system, a fully automatic dust removal of the condenser is possible.

Description

Air-water combined dust removal device for trough solar concentrator

technical field

The utility model mainly relates to the related technical field of dust removal for a solar trough-type concentrating mirror, in particular to an air-water combined dedusting device for a trough-type solar concentrating mirror.

Background technique

In the utilization of various concentrating devices for solar energy, the trough-type concentrating heat-collecting system is currently the most mature method, and with the implementation of the national solar energy 13th Five-Year Plan, trough-type solar thermal power generation devices and photothermal utilization devices It has become more and more common. Geographical locations rich in solar energy resources are mostly open, windy, and dusty. If the trough condenser is placed outdoors, dust deposition is inevitable. The rainfall in these geographic locations is small, which will interfere with The mixture of dust accumulation leads to spot-like stains or gully-like stains. The above phenomena have a great impact on the optical performance of the trough-type concentrating device, which will reduce the reflectivity of the mirror surface, thereby reducing the energy flux density of the concentrating focal plane, and then affecting the collector. Therefore, the cleaning problem of the surface of the trough solar concentrator has become an urgent problem to be solved in the trough solar thermal utilization industry.

At present, most of the curved surface trough condensers use tools to remove dust manually, and the manual methods include the following types: 1) Manually use high-pressure water guns to clean, this method consumes a lot of water resources, will leave water stains, and the cleaning is not thorough ; 2) Manually use mop to clean, the cleanliness of this method cannot be guaranteed; 3) Use a large compressor to purify, this method cannot clean some stubborn stains, and the dust that is purged may fall on the surface of the condenser. The above three cleaning methods are all mobile cleaning methods, and all of them consume a lot of manpower and material resources. Generally, cleaning is carried out at certain intervals, so there are dust accumulation, scaling, low efficiency, poor cleanliness, normal daily cleaning, and difficult to guarantee. The optical performance of the condenser and other issues.

Utility model content

In order to solve the deficiencies of the current technology, this utility model combines the existing technology and starts from practical application to provide a gas-water combined dust removal device for the trough-type solar concentrator. This device realizes the daily automatic dust removal of the concentrator through the combination of gas and water , simple structure, high degree of automation, and can ensure the cleanliness of the surface of the condenser.

The technical scheme of the utility model is as follows:

An air-water combined dedusting device for a trough-type solar concentrator, including a support assembly used to connect with a track system, a dedusting pipe spanning the concentrator is arranged on the support assembly, and several nozzles are arranged at intervals in the axial direction of the dedusting pipe, The support assembly is provided with a reciprocating linear drive mechanism to drive the dust removal pipe to reciprocate linearly along the direction across the condenser and a swing mechanism to drive the dust removal pipe to swing. The dust removal pipe is connected to the water supply system and the air supply system through hoses.

The support assembly includes two connecting seats, on which two connecting seats are installed transmission rods, a swing arm is arranged at both ends of the transmission rod, the two ends of the dust removal pipe are respectively fixedly connected with the swing arms, and the transmission rod and the connecting seat are slidably matched The reciprocating linear drive mechanism is arranged on one of the connecting seats and connected with the transmission rod, and the swing mechanism is arranged on the other connecting seat and connected with the swing arm.

The reciprocating linear drive mechanism includes an electric telescopic rod, which is connected to a transmission rod through a connecting plate, and the swing mechanism includes a swing motor connected to a crankshaft, and a long chute is provided on the swing arm, so One end of the crankshaft is matched with the strip chute clearance.

The dust removal device also includes a scraper, the scraper is arranged above the condenser, and the scraper is installed on the dust removal pipe through a connecting column.

A spring that pushes the scraper so that its bottom surface fits on the condenser is sheathed on the connecting post.

The nozzle is a streamlined nozzle.

The air supply system includes an air collecting rod on which an air collecting pipe is installed, and a rotatable elbow is arranged above the air collecting pipe. One end of the elbow is provided with a direction control fin, and the other end is provided with an air collector. The natural wind collected by the device is transported to the dust removal pipe through the elbow, air collecting pipe and air supply pipe.

The air collector is a trumpet-shaped structure, and a dust filter is arranged on the air collector.

The water supply system is a mobile water supply system that can be connected during use, and includes a water tank connected to a dust removal pipe through a water pump and a water supply pipeline.

The air supply pipeline is provided with an air flow control solenoid valve, and the water supply pipeline is provided with a water flow control solenoid valve.

The beneficial effects of the utility model:

1. The dust removal method adopted by the utility model can perform dust removal operation on the mirror surface of the trough solar condenser mirror in real time, and the airflow or water flow ejected from the nozzle of the dust removal pipe can clean the surface of the condenser mirror. The overall structure is simple and the cleaning effect is good. After the device is connected to the corresponding track system, it can realize the comprehensive and automatic dust removal of the condenser.

2. The reciprocating linear drive mechanism provided by the utility model can make the dust removal pipe reciprocate in a small range during the dust removal process, so as to ensure that the nozzle of the dust removal pipe can be sprayed to all surfaces of the condenser mirror, and the nozzle can be adjusted through the provided swing mechanism The angle to further improve the dust removal effect.

3. The overall structural design of the support assembly of the utility model is reasonable and compact, and can realize flexible adjustment and movement of the dust removal pipe.

4. The scraper provided in the utility model can scrape off the remaining water stains on the condenser mirror. The structural design of the scraper can ensure that the position of the mirror surface of the condenser mirror is always maintained when the dust removal pipe is adjusted.

5. The air-water combined dedusting system set in the utility model forms the airflow by collecting natural wind, which can effectively save energy. The air-water system can be remotely controlled by the solenoid valve to realize the switching of the dedusting mode.

6. The outlet on the dust removal pipe of the utility model is a streamlined nozzle, which can minimize energy loss and increase the outlet flow rate. The wind blows directly against the air collector, thus maximizing the collected air volume.

Description of drawings

Accompanying drawing 1 is the overall structural representation of the utility model;

Accompanying drawing 2 is the schematic diagram of the installation method of the dust removal pipe of the present invention;

Accompanying drawing 3 is the structural diagram of the support assembly of the utility model.

1. Track system; 2. Condenser; 3. Support component; 4. Dust removal pipe; 5. Water supply pipe; 6. Airflow control solenoid valve; 7. Air supply pipe; Air device; 11. Air collection pipe; 12. Air collection rod; 13. Water flow control solenoid valve; 14. Water tank; 15. Water supply solenoid valve; 16. Water pump; 17. Connecting seat; 18. Transmission rod; 19. Swing arm 20. Connecting plate; 21. Electric telescopic rod; 22. Nozzle; 23. Connecting column; 24. Spring; 25. Scraper; 26. Swing motor; 27. Crankshaft;

Detailed ways

The utility model will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that those skilled in the art may make various changes or modifications to the utility model after reading the content taught by the utility model, and these equivalent forms also fall within the scope defined in the application.

As shown in Figures 1 to 3, the utility model is a gas-water combined dedusting device for a trough-type solar concentrator, which mainly realizes the real-time dedusting operation of the concentrator by means of fixed dedusting. The dust removal device can be installed on the track system corresponding to the condenser lens, and move along the track system to realize the dust removal of the condenser lens.

The utility model includes a support assembly 3 used to connect with the track system 1. A dust removal pipe 4 spanning the condenser 2 is arranged on the support assembly 3. Several nozzles 22 are arranged at intervals in the axial direction of the dust removal pipe 4. On the support assembly 3 There is a reciprocating linear drive mechanism for driving the dust removal pipe 4 to reciprocate linearly along the direction across the condenser 2 and a swing mechanism for driving the dust removal pipe to swing. The dust removal pipe 4 is connected to the water supply system and the air supply system through hoses.

In the utility model, the air supply system and the water supply system can respectively supply air and water to the dust removal pipe 4, and the inside of the dust removal pipe 4 is provided with a channel to communicate with the external hose, and the water or air entered by the hose can pass through the streamlined nozzle 22 Jet out. A plurality of streamlined nozzles 22 are equidistant and the outlets are set toward the mirror surface of the trough solar concentrator 2, and the surface of the trough solar concentrator 7 is cleaned by the high-pressure gas or high-pressure water jetted from the streamlined nozzles 22. In actual use, the cleanliness of the surface of the condenser 2 can be reflected by collecting data on the reflectance of the surface of the condenser 2, and based on this, it is possible to choose to use the air supply system to achieve dust removal through jet airflow or choose to use the water supply system to achieve dust removal through jet water flow. Because in the present utility model, the nozzles 22 arranged on the dust removal pipe 4 are arranged at intervals, so in the actual dust removal process, the condenser 2 positions between the nozzles 22 may not be directly impacted by the water flow or the air flow, This can cause the mirror surface of part of the condenser lens 2 to be difficult to be cleaned. For this reason, the utility model is provided with corresponding reciprocating linear drive mechanism and swing mechanism, drives the dust removal pipe 4 to carry out reciprocating linear motion within a certain range through the reciprocating linear drive mechanism, thereby ensuring that the nozzle 22 can be sprayed to all surfaces of the condenser lens 2 superior.

As shown in Figures 2 and 3, the support assembly 3 of the present utility model includes two connecting seats 17, on which two connecting seats 17 are equipped with a transmission rod 18, a swing arm 10 is respectively arranged at both ends of the transmission rod 18, and the dust removal pipe 4 has two The ends are respectively fixedly connected with the swing arm 10, the transmission rod 18 and the connection seat 17 are slidingly fitted, the reciprocating linear drive mechanism is arranged on one of the connection seats 17 and connected with the transmission rod 18, and the swing mechanism is arranged on the other connection seat 17 And be connected with swing arm 10. The utility model drives the transmission rod 18 to reciprocate in a small range through the reciprocating linear drive mechanism, and the transmission rod 18 then drives the dust removal pipe 4 to reciprocate so that the nozzle 22 can directly spray and sweep to all positions of the trough solar concentrator 2 mirror surfaces. Simultaneously, the swing arm 10 is driven to adjust the angle by the swing mechanism provided, and the swing arm 10 then changes the angle of the dust removal pipe 4 to ensure that the nozzle 22 is at the best spray angle.

In the utility model, the reciprocating linear drive mechanism can be realized by a screw structure, and the electric telescopic rod 21 can also be directly used to fix the electric telescopic rod 21 on the connecting seat 17, and the electric telescopic rod 21 is connected to the transmission rod through a connecting plate 20 18 is connected, and when the electric telescopic rod 21 telescopically moves, the transmission rod 18 is driven to and fro by the connecting plate 20 to linearly move. Swing mechanism comprises swing motor 26, and swing motor 26 is fixed on the connecting seat 17, and swing motor 26 is connected with a crankshaft 27, is provided with strip chute 28 on swing arm 10, and one end of crankshaft 27 and strip chute 28 clearance fits . When the swing motor 26 drives the crankshaft 27 to rotate, the crankshaft 27 can drive the swing arm 10 to swing around the transmission rod 18, thereby adjusting the inclination angle of the nozzle 22, and the clearance fit between the crankshaft 27 and the strip chute 28 can also ensure dust removal The reciprocating linear motion of the tube 4 is not interfered with. The overall layout of the reciprocating linear motion structure and the swing structure provided by the utility model is reasonable, the structure is compact, and the space occupied is small, so that the dust removal pipe 4 can be flexibly adjusted to ensure that all parts of the trough solar concentrator 2 can be fully cleaned.

In the utility model, the dust removal device also includes a scraper 25, the scraper 25 spans above the trough solar concentrator 2, the scraper 25 is installed on the dust removal pipe 4 through two connecting columns 23, and the connecting column 23 is sleeved A spring 24 is provided, one end of the connecting column 23 is fixedly connected with the dust removal pipe 4, and the other end is slidingly matched with the scraper 25. The setting of the spring 24 can ensure that the scraper 25 is closely attached to the condenser 2, so as to scrape off dirt and water.

As shown in Figure 1, the air supply system of the present utility model includes an air collecting rod 12, which is fixed on one side of the trough-type solar concentrator 10, and an air collecting pipe 11 is installed on the air collecting rod 12, and the air collecting pipe 11 passes through The bearing is provided with an elbow 9, which can rotate relative to the air collecting pipe 11 and communicate with the inside of the air collecting pipe 11. One end of the elbow 9 is welded with the direction control empennage 8, and the other end is welded with a trumpet-shaped air collector 10. A dust filter is installed in the device 10, and the air collector 10 communicates with the air collecting pipe 11 through the elbow 9, and the air collecting pipe 11 is connected to the hose of the dust removal assembly through the air supply pipe 7. When the natural wind gives the wind direction control empennage pressure, it can drive the elbow 9 to rotate to ensure that the natural wind is blowing directly against the air collector 10, thereby maximizing the collected air volume. Since the structure of the air collector is an existing mature technology, it will not be detailed here. describe. The natural wind collected by the wind collector 10 is transported to the dust removal pipe 4 by the elbow 9, the air collecting pipe 11, and the air supply pipeline 7. In order to realize intelligent control, the utility model is provided with an airflow control solenoid valve 6 on the air supply pipeline 7, and realizes the on-off control of the air supply system by controlling the on-off of the airflow control solenoid valve 6.

The water supply system includes a water tank 14, the water tank 14 is connected to the dust removal pipe 4 through a water pump 16 and a water supply pipeline 5, and a water flow control solenoid valve 13 is arranged on the water supply pipeline 5. The water supply system can adopt a mobile water supply system, which can be connected when needed, and whether the water supply system can be connected and used by the on-off control of the water flow control solenoid valve 13 . The mobile water supply system is used in arid, water-deficient and windy areas in the north. The natural wind sweeping is to take advantage of the rich wind resources in this area. The mobile water system can save water resources. At the same time, it can also be used to collect rainwater in summer installation.

Claims (10)

1. a kind of air-water combined dedusting device of trough type solar concentrator, it is characterized in that: described dedusting device comprises the support assembly that is used to be connected with rail system, and support assembly is provided with a dust removal pipe across the condenser, in dust removal A number of nozzles are arranged at intervals in the axial direction of the tube. The support assembly is provided with a reciprocating linear drive mechanism for driving the dust removal tube to reciprocate linearly along the direction across the condenser and a swing mechanism for driving the dust removal tube to swing. The dust removal tube is connected to the water supply system and the water supply system through a hose. gas system. 2. The air-water combined dedusting device of a trough solar concentrator as claimed in claim 1, characterized in that: the support assembly includes two connecting seats, and transmission rods are installed on the two connecting seats, and the two connecting seats A swing arm is arranged at each end, and the two ends of the dust removal pipe are respectively fixedly connected with the swing arm, and the transmission rod and the connection seat are slidably fitted. A connecting seat and connected with the swing arm. 3. The air-water combined dedusting device of a trough solar concentrator as claimed in claim 2, wherein the reciprocating linear drive mechanism comprises an electric telescopic rod, which is connected with a transmission rod through a connecting plate , the swing mechanism includes a swing motor, the swing motor is connected to a crankshaft, and a long chute is provided on the swing arm, and one end of the crankshaft is in clearance fit with the long chute. 4. The air-water combined dedusting device of a trough solar concentrator as claimed in claim 1, characterized in that: said dedusting device also comprises a scraper, said scraper is arranged above the concentrator, and the scraper connects The column is installed on the dust removal pipe. 5 . The air-water combined dedusting device for a trough-type solar concentrator as claimed in claim 4 , wherein a spring for pushing the scraper to attach the bottom surface to the concentrator is sheathed on the connecting column. 5 . 6. A combined air-water dedusting device for a trough-type solar concentrator as claimed in claim 1, characterized in that: said nozzle is a streamlined nozzle. 7. The air-water combined dedusting device of a kind of trough solar concentrator as claimed in claim 1, characterized in that: the air supply system comprises an air collecting rod, on which an air collecting pipe is installed, and above the air collecting pipe A rotatable elbow is provided. One end of the elbow is provided with a direction control fin, and the other end is provided with a wind collector. The natural wind collected by the air collector is transported to the dust removal pipe through the elbow, the air collection pipe and the air supply pipe. 8 . The combined air-water dedusting device of a trough-type solar concentrator as claimed in claim 7 , wherein the air collector is a trumpet-shaped structure, and a dust filter is arranged on the air collector. 9. The gas-water combined dedusting device of a trough solar concentrator as claimed in claim 8, characterized in that: the water supply system is a mobile water supply system, which can be connected when in use, and it includes a water tank, which passes through The water pump and the water supply pipe are connected to the dust removal pipe. 10. The air-water combined dedusting device for a trough-type solar concentrator as claimed in claim 9, characterized in that: the air supply pipeline is provided with an airflow control solenoid valve, and the water supply pipeline is provided with a water flow control solenoid valve. valve.