阅读说明：本技术 一种定日镜清洗装置 (Heliostat cleaning device ) 是由 杨都堂 宓霄凌 刘志娟 李建华 薛刚强 李晓波 韩梦天 于 2019-10-21 设计创作，主要内容包括：本发明公开了一种定日镜清洗装置,用于清洗定日镜,包括：清洗机构、清洗支架、清洗机构框架,在清洗装置清洗的方向上,清洗支架上顺序设置有至少一组第一液体清洗组件、至少一组刷洗组件、至少一组第二液体清洗组件、至少一组气体清理组件和至少一组烘干组件；第一液体清洗组件、第二液体清洗组件连接有清洗液储存箱,气体清理组件连接有气体储存箱；清洗平台,用于搭载清洗机构,使其能在定日镜行中行走；清洗平台搭载清洗机构行走过程中,第一液体清洗组件、刷洗组件、第二液体清洗组件、气体清理组件和烘干组件顺序对定日镜的镜面进行一次冲洗、刷洗、二次冲洗、吹扫、烘干。本发明提供的装置在冰点温度以下时,能够实现水洗清洁定日镜。(The invention discloses a heliostat cleaning device, which is used for cleaning heliostats and comprises: the cleaning device comprises a cleaning mechanism, a cleaning support and a cleaning mechanism frame, wherein at least one group of first liquid cleaning assemblies, at least one group of scrubbing assemblies, at least one group of second liquid cleaning assemblies, at least one group of gas cleaning assemblies and at least one group of drying assemblies are sequentially arranged on the cleaning support in the cleaning direction of the cleaning device; the first liquid cleaning component and the second liquid cleaning component are connected with a cleaning liquid storage tank, and the gas cleaning component is connected with a gas storage tank; the cleaning platform is used for carrying a cleaning mechanism to enable the cleaning mechanism to walk in the heliostat row; during the walking process of the cleaning platform carrying and cleaning mechanism, the first liquid cleaning assembly, the brushing assembly, the second liquid cleaning assembly, the gas cleaning assembly and the drying assembly sequentially carry out primary washing, brushing, secondary washing, purging and drying on the mirror surface of the heliostat. The device provided by the invention can realize washing and cleaning of the heliostat below the freezing point temperature.)

1. A heliostat cleaning apparatus for cleaning heliostats, comprising:

the cleaning mechanism comprises a cleaning bracket, and at least one group of first liquid cleaning components, at least one group of scrubbing components, at least one group of second liquid cleaning components, at least one group of gas cleaning components and at least one group of drying components are sequentially arranged on the cleaning bracket in the cleaning direction of the cleaning device; the first liquid cleaning component and the second liquid cleaning component are connected with a cleaning liquid storage tank, and the gas cleaning component is connected with a gas storage tank;

the cleaning platform is used for carrying the cleaning mechanism so as to enable the cleaning mechanism to walk in the heliostat row; when the cleaning platform carries the cleaning mechanism to travel, the first liquid cleaning assembly, the brushing assembly, the second liquid cleaning assembly, the gas cleaning assembly and the drying assembly sequentially perform primary washing, brushing, secondary washing, purging and drying on the mirror surface of the heliostat;

the cleaning mechanism is carried on the cleaning platform through the cleaning mechanism frame, and the gas storage tank and the cleaning liquid storage tank are arranged on the cleaning mechanism frame.

2. The heliostat cleaning device of claim 1, wherein the drying assembly is a gas drying assembly and is connected to the gas storage tank, the gas storage tank is provided with a first heating device for heating gas therein, and the cleaning solution storage tank is provided with a second heating device for heating liquid therein.

3. The heliostat cleaning device of claim 2, wherein the first heating device and/or the second heating device can utilize tail gas generated during the walking of the cleaning platform as a heat source.

4. The heliostat cleaning apparatus of claim 1 or 2, further comprising a resilient pressure mechanism for providing pressure to liquid within the cleaning liquid storage tank and for providing pressure to gas within the gas storage tank;

the elastic pressure mechanism further includes: the first elastic unit, the second elastic unit, the first piston and the second piston; one end of the first elastic unit is fixed on the lower surface of the cleaning bracket, and the other end of the first elastic unit is fixed on the first piston; one end of the second elastic unit is fixed on the lower surface of the cleaning bracket, and the other end of the second elastic unit is fixed on the second piston;

the first piston is arranged in the gas storage tank, and the second piston is arranged in the cleaning liquid storage tank;

when the cleaning device is in a working state, gas exists in the first box body and cleaning liquid exists in the second box body, the first elastic unit and the second elastic unit are both in a compressed state.

5. The heliostat cleaning device of claim 4, wherein the elastic pressure mechanism further comprises a first adjusting unit fixed to a wall of the gas storage tank to adjust the first piston and a second adjusting unit to adjust the first piston to an initial state after the first tank is completely exhausted; the second adjusting unit is fixed on the wall of the cleaning liquid storage tank and used for adjusting the second piston, and the second adjusting unit is used for adjusting the second piston to return to an initial state after all liquid in the second tank is used up;

the initial state is the position of the first piston when the gas storage tank is filled with gas and the position of the second piston when the cleaning solution storage tank is filled with cleaning solution.

6. The heliostat cleaning apparatus of claim 5, wherein the first and second conditioning units each comprise a crank link, a gear drive, a power unit, a control unit; the gear transmission further comprises a large circular gear and a small circular gear which are meshed with each other; the power unit further comprises a turning screw, a clutch and a running rotary bearing; the control unit further comprises an upper limit sensor, a lower limit sensor and a controller which are arranged at the uppermost position and the lowermost position of the piston stroke of the cleaning liquid storage tank and the gas storage tank;

the turning screw rod is composed of a plurality of sections, one end of the turning screw rod is connected with the traveling spiral bearing through a clutch, the other end of the turning screw rod is connected with a large circular gear driven by the gear, one end of the crank connecting rod is connected with the large circular gear, the other end of the crank connecting rod of the first adjusting unit is fixed on the first piston, and the other end of the crank connecting rod of the second adjusting unit is fixed on the second piston;

the controller is electrically connected with the upper limit sensor, the lower limit sensor and the clutch, and the controller controls the separation and combination of the clutch according to signals of the upper limit sensor and the lower limit sensor.

7. The heliostat cleaning apparatus of claim 4, wherein the first and second elastic units each comprise a telescopic conduit and a spring, the telescopic conduit is sleeved on the spring, and the difference between the longest and shortest distances of the telescopic conduit is equal to the deformation displacement of the spring.

8. The heliostat cleaning device of claim 6, further comprising a first liquid cleaning assembly drive motor drive, a scrubbing assembly drive motor drive, a second liquid cleaning assembly drive motor drive, a gas cleaning assembly drive motor drive, a drying assembly drive motor drive;

the first liquid cleaning component is in driving connection with the first liquid cleaning component driving motor, the brushing component is in driving connection with the brushing component driving motor, the second liquid cleaning component is in driving connection with the second liquid cleaning component driving motor, the gas cleaning component is in driving connection with the gas cleaning component driving motor, and the drying component is in driving connection with the drying component driving motor;

the first liquid cleaning component driving motor, the brushing component driving motor, the second liquid cleaning component driving motor, the gas cleaning component driving motor and the drying component driving motor are all arranged on the cleaning bracket;

the controller is respectively electrically connected with the first liquid cleaning component driving motor, the brushing component driving motor, the second liquid cleaning component driving motor, the gas cleaning component driving motor and the drying component driving motor.

9. The heliostat cleaning platform of claim 2, wherein the first liquid cleaning assembly comprises a first liquid spray head and a liquid conduit, the second liquid cleaning assembly comprises a second liquid spray head and a liquid conduit, the gas cleaning assembly comprises a first gas spray head and a gas conduit, the drying device comprises a second gas spray head and a gas conduit, and the roller brush assembly comprises a roller brush;

the first liquid spray head and the second liquid spray head are both connected with a cleaning liquid storage tank through liquid pipelines; the first gas nozzle and the second gas nozzle are connected with a gas storage tank through gas pipelines;

and the first liquid spray head, the second liquid spray head, the first gas spray head and the second gas spray head are all provided with pressure regulating valves.

10. A heliostat cleaning platform of claim 9, wherein the cleaning platform is capable of determining the cleaning time of each heliostat by convention of cleaning efficiency while traveling in the heliostat row, and the heating temperature T of the cleaning liquid is calculated according to the formula (1) from the cleaning time T _W：

(Φ ₁+Φ ₂+Φ ₃)×T＝c×Δm×(T _w-T ₀) (1)

Wherein: phi ₁、Φ ₂、Φ ₃Respectively representing the convective heat dissipation loss power, the thermal conductive heat dissipation loss power and the radiant heat dissipation loss power on the unit area of the mirror surface, wherein T represents the total cleaning time of the first liquid spray head, the rolling brush, the second liquid spray head and the first gas spray head on the heliostat, c represents the specific heat capacity of the cleaning liquid, Delta m represents the maximum mass of the cleaning liquid sprayed on the unit area of the mirror surface of the heliostat, and T represents the maximum mass of the cleaning liquid sprayed on the unit area of the mirror surface of the heliostat _WDenotes the temperature, T, of the hot cleaning liquid ₀Indicating the freezing temperature of the cleaning solution;

the heating temperature of the cleaning liquid is matched with the heating power and the heating time in the heating device, and the heating time of the heating device can be calculated according to the formula (2):

P×t＝C ₁M ₁ΔT ₁+C ₂M ₂ΔT ₂

M ₁＝ρ ₁V ₁,M ₂＝ρ ₂V ₂(2)

wherein P representsThe heating power of a heating device and a first heating device; t represents a heating time; c ₁Denotes the specific heat capacity of the cleaning liquid, M ₁Denotes the mass of the cleaning liquid,. DELTA.T ₁Showing the temperature rise difference of the cleaning liquid; rho ₁Denotes the density, V, of the cleaning liquid ₁Representing the volume of the cleaning fluid storage tank; c ₂: specific heat capacity of gas, M ₂: mass of gas, Δ T ₂Representing the temperature rise difference of the gas; rho ₂Denotes the density, V, of the gas ₂Representing the volume of the gas storage tank.

Technical Field

The invention belongs to the field of solar thermal power generation, and particularly relates to a heliostat cleaning device.

Background

Solar thermal Power generation, also called Solar concentrated Solar Power (CSP for short), is currently the main technical route of Solar thermal Power generation systems internationally, such as tower, trough, linear fresnel, disc and so on. The operation of the energy storage system makes the photo-thermal power generation technology different from other new energy power generation modes such as wind energy, photovoltaic and the like, and can realize 24-hour continuous, stable and schedulable power output. The photothermal power generation is considered as a clean energy source which most possibly replaces thermal power to bear the power base load, the traditional turbo generator unit is adopted to enable the photothermal power station to have the frequency modulation and peak regulation capabilities, and the photothermal power is a real friendly renewable energy source.

In the photo-thermal power station, the annual energy production of the power station is the most important index for evaluating the performance of the power station, wherein the cleanliness of the mirror field has a remarkable influence on the annual energy production of the photo-thermal power station, the higher the annual cleanliness of the mirror field is, the higher the annual energy production of the photo-thermal power station is, the lower the annual cleanliness of the mirror field is, and the lower the annual energy production of the photo-thermal power station is.

The station sites suitable for building the photo-thermal power station in China are basically concentrated in the northwest region, the main distributed provinces include Xinjiang, Tibet, Gansu, Qinghai, inner Mongolia and the like, the seasonal distribution of the regions is obvious, the temperature change in one year is obvious, the long winter basically exists, in part of plateau regions, the environmental temperature of the station sites is below the freezing point temperature for more than 4 months, the current cleaning mode of the photo-thermal power station adopts a water cleaning mode above the freezing point temperature, a dry cleaning mode is adopted below the freezing point temperature, the cleanness of the mirror surface after water cleaning can reach more than 98%, and the cleanness of the mirror surface after dry cleaning can only reach 92%, based on the current situation, if the mirror surface of the photo-thermal power station can be cleaned all the year round, the annual cleanness of the mirror site can be obviously improved, and the power generation level of the power station is improved. It is therefore important to provide a technique for water-washable cleaning of heliostats during the winter season.

Disclosure of Invention

The invention provides a heliostat cleaning device aiming at the problems, which can still realize water washing and cleaning of heliostats in a low-temperature environment.

In order to solve the problems, the technical scheme of the invention is as follows:

a heliostat cleaning apparatus for cleaning a heliostat comprising:

the cleaning mechanism comprises a cleaning bracket, and at least one group of first liquid cleaning components, at least one group of scrubbing components, at least one group of second liquid cleaning components, at least one group of gas cleaning components and at least one group of drying components are sequentially arranged on the cleaning bracket in the cleaning direction of the cleaning device; the first liquid cleaning component and the second liquid cleaning component are connected with a cleaning liquid storage tank, and the gas cleaning component is connected with a gas storage tank;

the gas storage tank is provided with a one-way gas inlet valve and a one-way gas outlet valve; a one-way liquid inlet valve and a one-way liquid outlet valve are arranged on the cleaning liquid storage tank;

the cleaning platform is used for carrying the cleaning mechanism so as to enable the cleaning mechanism to walk in the heliostat row; when the cleaning platform carries the cleaning mechanism to travel, the first liquid cleaning assembly, the brushing assembly, the second liquid cleaning assembly, the gas cleaning assembly and the drying assembly sequentially perform primary washing, brushing, secondary washing, purging and drying on the mirror surface of the heliostat;

the cleaning mechanism is carried on the cleaning platform through the cleaning mechanism frame, and the gas storage tank and the cleaning liquid storage tank are arranged on the cleaning mechanism frame.

In a preferred embodiment, the drying assembly is a gas drying assembly and is connected with the gas storage tank, the gas storage tank is provided with a first heating device for heating gas in the gas storage tank, and the cleaning solution storage tank is provided with a second heating device for heating liquid in the cleaning solution storage tank.

In a preferred embodiment, the first heating device and/or the second heating device can utilize tail gas generated in the walking process of the cleaning platform as a heat source.

In a preferred embodiment, the cleaning device further comprises an elastic pressure mechanism for providing pressure to the cleaning liquid in the cleaning liquid storage tank and providing pressure to the gas in the gas storage tank;

the elastic pressure mechanism further includes: the first elastic unit, the second elastic unit, the first piston and the second piston; one end of the first elastic unit is fixed on the lower surface of the cleaning bracket, and the other end of the first elastic unit is fixed on the first piston; one end of the second elastic unit is fixed on the lower surface of the cleaning bracket, and the other end of the second elastic unit is fixed on the second piston;

the first piston is arranged in the gas storage tank, and the second piston is arranged in the cleaning liquid storage tank;

when the cleaning device is in a working state, gas exists in the first box body and cleaning liquid exists in the second box body, the first elastic unit and the second elastic unit are both in a compressed state. The cooperation of the first piston and the first elastic unit and the cooperation of the second piston and the second elastic unit are adopted, and the self weight of the cleaning liquid and the elastic force provided by the elastic units are utilized, so that high-pressure liquid and high-pressure gas can be realized without energy consumption.

In a preferred embodiment, the elastic pressure mechanism further comprises a first adjusting unit and a second adjusting unit, the first adjusting unit is fixed on the wall of the gas storage tank and adjusts the first piston, and the first adjusting unit is used for adjusting the first piston to return to an initial state after the gas in the first tank is completely used up; the second adjusting unit is fixed on the wall of the cleaning liquid storage tank and used for adjusting the second piston, and the second adjusting unit is used for adjusting the second piston to return to an initial state after all the cleaning liquid in the second tank is used up;

the initial state is the position of the first piston when the gas storage tank is filled with gas and the position of the second piston when the cleaning solution storage tank is filled with liquid.

In a preferred embodiment, the first adjusting unit and the second adjusting unit respectively comprise a crank connecting rod, a gear transmission, a power unit and a control unit; the gear transmission further comprises a large circular gear and a small circular gear which are meshed with each other; the power unit further comprises a turning screw, a clutch and a running rotary bearing; the control unit further comprises an upper limit sensor, a lower limit sensor and a controller which are arranged at the uppermost position and the lowermost position of the piston stroke of the cleaning liquid storage tank and the gas storage tank;

the turning screw rod is composed of a plurality of sections, one end of the turning screw rod is connected with the traveling spiral bearing through a clutch, the other end of the turning screw rod is connected with a large circular gear driven by the gear, one end of the crank connecting rod is connected with the large circular gear, the other end of the crank connecting rod of the first adjusting unit is fixed on the first piston, and the other end of the crank connecting rod of the second adjusting unit is fixed on the second piston;

the controller is electrically connected with the upper limit sensor, the lower limit sensor and the clutch, and the controller controls the separation and combination of the clutch according to signals of the upper limit sensor and the lower limit sensor. The design adjusting unit is adopted, when cleaning liquid or gas in a box body is used up, the piston moves downwards to the position of the lower limiting sensor at the moment, the sensor sends a signal to the controller, the controller receives the signal, the controller controls the clutch to combine the traveling spiral bearing and the turning screw, the traveling spiral bearing drives the turning screw to move, the turning screw drives a gear wheel of the gear transmission to rotate, a crank connecting rod is further driven to move and a pinion to rotate, the piston is further driven to move upwards, when the piston moves to the position of the upper limiting sensor, the initial position is the initial position at the moment, the upper limiting sensor detects the piston, the signal is sent to the controller, the controller controls the clutch to separate the traveling spiral bearing and the turning screw, and the adjusting unit is in the non-working state at the moment.

In a preferred embodiment, the first elastic unit and the second elastic unit both include a telescopic guide tube and a spring, the spring is sleeved with the telescopic guide tube, the difference between the longest distance and the shortest distance of the telescopic guide tube is equal to the deformation displacement of the spring, and the spring is prevented from lateral displacement by sleeving the telescopic guide tube outside the spring.

In the preferred embodiment, the device also comprises a first liquid cleaning component driving motor drive, a brushing component driving motor drive, a second liquid cleaning component driving motor drive, a gas cleaning component driving motor drive and a drying component driving motor drive;

the first liquid cleaning component is in driving connection with a first liquid cleaning component driving motor, the brushing component is in driving connection with a brushing component driving motor, the second liquid cleaning component is in driving connection with a second liquid cleaning component driving motor, the gas cleaning component is in driving connection with a gas cleaning component driving motor, and the drying component is in driving connection with a drying component driving motor;

the first liquid cleaning component driving motor, the brushing component driving motor, the second liquid cleaning component driving motor, the gas cleaning component driving motor and the drying component driving motor are all arranged on the cleaning bracket;

the controller is respectively connected with the first liquid cleaning component driving motor, the brushing component driving motor, the second liquid cleaning component driving motor, the gas cleaning component driving motor and the drying component driving motor in an electric mode, and controls the first liquid cleaning component driving motor, the brushing component driving motor, the second liquid cleaning component driving motor, the gas cleaning component driving motor and the drying component driving motor to be opened and closed so as to control the first liquid cleaning component, the brushing component, the second liquid cleaning component, the gas cleaning component and the drying component to work and close.

In a preferred embodiment, the first liquid cleaning assembly comprises a first liquid spray head and a liquid pipeline, the second liquid cleaning assembly comprises a second liquid spray head and a liquid pipeline, the gas cleaning assembly comprises a first gas spray head and a gas pipeline, and the drying device comprises a second gas spray head and a gas pipeline;

the first liquid spray head and the second liquid spray head are both connected with a cleaning liquid storage tank through liquid pipelines; first gas shower nozzle with the second gas shower nozzle all is connected with gas storage tank through gas line, first liquid shower nozzle the second liquid shower nozzle first gas shower nozzle all be equipped with pressure regulating valve on the second gas shower nozzle, can adjust shower nozzle spun liquid or gaseous pressure.

When the cleaning platform walks in the heliostat row, under the condition of appointing the cleaning efficiency, the cleaning time of each heliostat can be determined, and according to the cleaning time T, the heating temperature T of the cleaning liquid can be calculated according to a formula (1) _W：

(Φ ₁+Φ ₂+Φ ₃)×T＝c×Δm×(T _w-T ₀) (1)

Wherein: phi ₁、Φ ₂、Φ ₃Respectively representing the convective heat dissipation loss power, the thermal conductive heat dissipation loss power and the radiant heat dissipation loss power on the unit area of the mirror surface, wherein T represents the total cleaning time of the first liquid spray head, the rolling brush, the second liquid spray head and the first gas spray head on the heliostat, c represents the specific heat capacity of the cleaning liquid, Delta m represents the maximum mass of the cleaning liquid sprayed on the unit area of the mirror surface of the heliostat, and T represents the maximum mass of the cleaning liquid sprayed on the unit area of the mirror surface of the heliostat _WDenotes the temperature, T, of the hot cleaning liquid ₀Indicating the freezing temperature of the cleaning solution;

the heating temperature of the cleaning liquid is matched with the heating power and the heating time in the heating device, and the heating time of the heating device can be calculated according to the formula (2):

P×t＝C ₁M ₁ΔT ₁+C ₂M ₂ΔT ₂

M ₁＝ρ ₁V ₁,M ₂＝ρ ₂V ₂(2)

wherein P represents the first heating means and the heating power of the first heating means; t represents a heating time; c ₁Denotes the specific heat capacity of the cleaning liquid, M ₁Denotes the mass of the cleaning liquid,. DELTA.T ₁Showing the temperature rise difference of the cleaning liquid; rho ₁Denotes the density, V, of the cleaning liquid ₁Representing the volume of the cleaning fluid storage tank; c ₂: specific heat capacity of gas, M ₂: mass of gas, Δ T ₂Representing the temperature rise difference of the gas; rho ₂Denotes the density, V, of the gas ₂Representing the volume of the gas storage tank.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

the invention provides a device which can still clean heliostats by water washing under low-temperature environment (particularly in winter). On the direction of cleaning, wash and set up first liquid cleaning assembly in proper order on the support, scrub the subassembly, second liquid cleaning device, gaseous cleaning assembly and stoving subassembly, use cleaning device to wash the heliostat, cleaning platform walks in the heliostat, when traveling to the dead ahead of heliostat mirror surface, open first liquid cleaning assembly in proper order, scrub the subassembly, second liquid cleaning device, gaseous cleaning assembly and stoving subassembly, carry out quick one time to the mirror surface of heliostat in proper order in very short time and wash, scrub, the secondary is washed, sweep, the stoving, no matter the washing liquid is water or other liquid, all make the mirror surface wash clean and not freeze.

The elastic pressure mechanism is designed in the preferred embodiment of the invention, the first piston is arranged at the upper part of the gas storage tank, forms a closed space with the gas storage tank and stores gas, and the second piston is arranged at the upper part of the cleaning liquid storage tank, forms a closed space with the cleaning liquid storage tank and stores cleaning liquid. When belt cleaning device washs the heliostat, the first elastic unit that is in compression state utilizes elasticity to pass through first piston compressed gas, produce high-pressure gas, the second elastic unit that is in compression state utilizes elasticity to pass through second piston compressed cleaning liquid, produce high-pressure cleaning liquid, first liquid washs subassembly like this, second liquid washs subassembly and utilizes high-pressure cleaning liquid to wash once fast, the secondary washes, gaseous cleaning assembly, drying device utilize high-pressure gas to sweep, the stoving heliostat mirror surface, the cleaning performance is better. Therefore, the elastic pressure mechanism is designed, high-pressure gas and high-pressure cleaning liquid can be realized without energy consumption, the cost is saved, and the cleaning effect is better.

Drawings

FIG. 1 is a schematic view showing a simplified configuration of a straddle-type washing cart according to an embodiment of the present invention;

FIG. 2 is a schematic view of a straddle-type washing cart according to an embodiment of the present invention;

FIG. 3 is a schematic longitudinal sectional view of a heliostat cleaning apparatus in an embodiment of the invention;

FIG. 4 is a schematic structural diagram of an elastic pressure mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of the elastic adjustment unit in the embodiment of the present invention during operation.

Description of reference numerals: 1-a second gas showerhead; 2-a first gas showerhead; 3-a second water jet; 4-rolling and brushing; 5-a first water jet; 6-a first elastic unit; 601-a spring; 602-a telescoping catheter; 7-a water pipeline; 8-a second piston; 9-a water storage tank; 10-a heating device; 11-a separator; 12-a first piston; 13-gas storage tank; 14-a gas pipeline; 15-cleaning the stent; 16-a crank link; 17-a turning screw; 18-gear transmission; 19-a second elastic unit; 20-cleaning the mechanism frame; 21-a tire; 22-upper limit sensor; 23-a lower limit sensor; 24-a running swivel bearing; 25-clutch.

Detailed Description

The heliostat cleaning device provided by the invention is further explained in detail by combining the figures and the specific embodiment. Advantages and features of the present invention will become apparent from the following description and from the claims.

Referring to fig. 1-3, in one embodiment, a heliostat cleaning device, which in this embodiment is mainly used for cleaning heliostats with water in a low-temperature environment, although other cleaning liquids may be used for cleaning heliostats, and the cleaning device includes: a cleaning mechanism, cleaning platform, cleaning mechanism frame 20;

the cleaning mechanism comprises a cleaning support 15, and at least one group of first liquid cleaning assemblies, at least one group of scrubbing assemblies, at least one group of second liquid cleaning assemblies, at least one group of gas cleaning assemblies and at least one group of drying assemblies are sequentially arranged on the cleaning support 15 in the cleaning direction of the cleaning device; the first liquid cleaning component and the second liquid cleaning component are connected with a water storage tank 9, the gas cleaning component is connected with a gas storage tank 13, and gas stored in the gas storage tank 13 can be inert gas or air or nitrogen;

a one-way air inlet valve and a one-way air outlet valve are arranged on the gas storage tank 13, and a one-way water inlet valve and a one-way water outlet valve are arranged on the water storage tank 9;

the cleaning platform is used for carrying a cleaning mechanism to enable the cleaning mechanism to walk in the heliostat row; during the walking process of the cleaning platform carrying the cleaning mechanism, the first liquid cleaning assembly, the brushing assembly, the second liquid cleaning assembly, the gas cleaning assembly and the drying assembly sequentially carry out primary washing, brushing, secondary washing, purging and drying on the mirror surface of the heliostat;

the cleaning mechanism is mounted on the cleaning platform through the cleaning mechanism frame 20, and the gas storage tank 13 and the water storage tank 9 are both provided on the cleaning mechanism frame 20.

In a preferred embodiment, the drying module is a gas drying module and is connected to the gas storage tank 13, the gas storage tank 13 is provided with a first heating device for heating gas therein, and the water storage tank 9 is provided with a first heating device for heating water therein. Preferably, the gas storage tank 13 and the water storage tank 9 are made of heat insulating materials, and the gas storage tank 13 and the water storage tank 9 are provided with heat insulating layers on the peripheral sides.

The gas storage tank 13 and the water storage tank 9 may be two separate tanks or may be one tank, and a partition 11 is provided inside the tank to divide the space of the tank into two separate spaces for storing gas and water, respectively, i.e., the gas storage tank 13 and the water storage tank 9, which is the case with the partition 11 in this embodiment, so that the first heating means and the second heating means may be combined into one heating means 10; the separator 11 is preferably a heat conductive material, the separator 11 is preferably a corrugated plate, and the separator 11 is in the form of a corrugated plate to increase the contact area between the gas and the water, thereby allowing the water and the gas to exchange heat sufficiently. Preferably, the heating device 10 can use the exhaust gas generated during the walking process of the cleaning platform as a heat source.

Preferably, the first liquid cleaning component comprises a first water spray head 5 and a water pipeline 7, the second liquid cleaning component comprises a second water spray head 4 and a water pipeline 7, the gas cleaning component comprises a first gas spray head 2 and a gas pipeline 14, and the drying device comprises a second gas spray head and a gas pipeline 14; the first water spray head 5 and the second water spray head 4 are both connected with a water storage tank 9 through a water pipeline 7; the first gas nozzle 2 and the second gas nozzle 1 are both connected with a gas storage tank 13 through a gas pipeline 14, and the rolling brush component comprises a rolling brush 4; the first water spray head 5, the second water spray head 3, the first gas spray head 2 and the second gas spray head 1 are all provided with pressure regulating valves, and the pressure of water or gas sprayed by the spray heads can be regulated.

Preferably, the gas storage tank 13 and the water storage tank 9 are provided with one-way valves for air intake, water intake, air exhaust and water discharge.

The present embodiments provide an apparatus that can still clean heliostats with water wash in low temperature environments, particularly in winter. On the direction of cleaning, wash and set up first liquid cleaning assembly in proper order on support 15, scrub the subassembly, second liquid cleaning device, gaseous cleaning assembly and stoving subassembly, use cleaning device to wash the heliostat, cleaning platform walks in the heliostat, when traveling to the dead ahead of heliostat mirror surface, open first liquid cleaning assembly in proper order, scrub the subassembly, second liquid cleaning device, gaseous cleaning assembly and stoving subassembly, wash in proper order once that the mirror surface of heliostat carries on being quick in very short time, scrub, the secondary is washed, sweep, the stoving, make the mirror surface wash clean and not freeze.

The preferred embodiment further comprises elastic pressure means for providing pressure to the water in the water storage tank 9 and for providing pressure to the gas in the gas storage tank 13;

the elastic pressure mechanism further includes: a first elastic unit 6, a second elastic unit 19, a first piston 12, a second piston 8; one end of the first elastic unit 6 is fixed on the lower surface of the cleaning bracket 15, and the other end is fixed on the first piston 12; one end of the second elastic unit 19 is fixed on the lower surface of the cleaning bracket 15, and the other end is fixed on the second piston 8;

the first piston 12 is arranged above the gas storage tank 13, forms a closed space with the gas storage tank 13 for storing gas, and the second piston 8 is arranged above the water storage tank 9, forms a closed space with the water storage tank 9 for storing water;

when the cleaning device is in a cleaning working state, gas is in the gas storage tank 13 and water is in the water storage tank 9, the first elastic unit 6 and the second elastic unit 19 are both in a compressed state.

In the preferred embodiment, the device also comprises a controller, a first liquid cleaning component driving motor drive, a scrubbing component driving motor drive, a second liquid cleaning component driving motor drive, a gas cleaning component driving motor drive and a drying component driving motor drive;

the first liquid cleaning component is in driving connection with a first liquid cleaning component driving motor, the brushing component is in driving connection with a brushing component driving motor, the second liquid cleaning component is in driving connection with a second liquid cleaning component driving motor, the gas cleaning component is in driving connection with a gas cleaning component driving motor, and the drying component is in driving connection with a drying component driving motor;

a first liquid cleaning component driving motor, a scrubbing component driving motor, a second liquid cleaning component driving motor, a gas cleaning component driving motor and a drying component driving motor are all arranged on the cleaning bracket 15;

the controller respectively with first liquid wash subassembly driving motor, scrub subassembly driving motor, second liquid wash subassembly driving motor, gaseous clearance subassembly driving motor, stoving subassembly driving motor electricity is connected, the first liquid of controller control washs subassembly driving motor, scrub subassembly driving motor, second liquid wash subassembly driving motor, gaseous clearance subassembly driving motor, the opening and closing of stoving subassembly driving motor, and then control first liquid and wash the subassembly, scrub the subassembly, the second liquid washs the subassembly, gaseous washing subassembly, the work of stoving subassembly and closing.

The preferred embodiment provides a device for cleaning heliostats by water washing when the temperature is below zero in winter, a first piston 12 is arranged on the upper portion of a gas storage tank 13 and forms a closed space with the gas storage tank 13 to store gas, a second piston 8 is arranged on the upper portion of a water storage tank 9 and forms a closed space with the water storage tank 9 to store cleaning liquid, one end of a first elastic unit 6 is arranged on a cleaning support 15, the other end of the first elastic unit is connected with the first piston 12, one end of a second elastic unit 19 is arranged on the cleaning support 15, the other end of the second elastic unit is connected with the second piston 8, and when gas and water exist in the gas storage tank 13 and the water storage tank 9, the first elastic unit 6 and the second elastic unit 19 are both in a compressed state. When belt cleaning device washs the heliostat, be in compression state's first elastic unit 6 utilizes elasticity to pass through first piston 12 compressed gas, produce high-pressure gas, be in compression state's second elastic unit 19 utilizes elasticity to pass through second piston 8 pressure shrink, produce the high pressure water, first liquid washs the subassembly like this, second liquid washs the subassembly and utilizes high-pressure cleaning liquid to wash once fast, the secondary washes, gaseous cleaning assembly, drying device utilizes high-pressure gas to sweep, the stoving heliostat mirror surface, the cleaning performance is better. Therefore, the elastic pressure mechanism is designed, high-pressure gas and high-pressure water can be realized without energy consumption, the cost is saved, and the cleaning effect is better.

Use belt cleaning device to wash the heliostat, the cleaning platform walks in the heliostat, when traveling to the dead ahead of heliostat mirror surface, first liquid cleaning subassembly driving motor is controlled in proper order to the controller, round brush subassembly driving motor, second liquid cleaning subassembly driving motor, gaseous cleaning subassembly driving motor, drying device driving motor, and then first water shower nozzle 5, the round brush 4, second water shower nozzle 3, first gas shower nozzle 2, second gas shower nozzle 1 is opened in proper order, carry out quick once to the mirror surface of heliostat in proper order in very short time and wash, scrub, the secondary is washed, sweep, dry, make the mirror surface wash clean and not freeze.

When the cleaning platform walks in the heliostat row, the cleaning device carries out quick primary washing to the heliostat mirror surface in a very short time, brushing, secondary washing, purging and drying, the heliostat is ensured not to be frozen in the cleaning process in time control, the drying time is relatively long, so as to ensure that the final mirror surface can be dried, under the condition of appointed cleaning efficiency, the cleaning time T of each heliostat can be determined, and the cleaning time is influenced by water pressure, ambient temperature, ambient wind speed and cleaning water quantity, under the condition that the ambient temperature and the ambient wind speed are determined, the cleaning time can be kept basically stable by adjusting the water pressure and the cleaning water quantity, and therefore the cleaning efficiency is ensured. The heating temperature can be calculated according to equation (1) from the washing time:

(Φ ₁+Φ ₂+Φ ₃)×T＝c×Δm×(T _w-T ₀) (1)

wherein: phi ₁、Φ ₂、Φ ₃Respectively representing the convective heat dissipation loss power, the thermal conductive heat dissipation loss power and the radiant heat dissipation loss power on the unit area of the mirror surface, T representing the total cleaning time of the heliostat by the first water spray head 5, the rolling brush 4, the second water spray head 3 and the first gas spray head 2, C representing the specific heat capacity of water, Deltam representing the maximum mass of the water sprayed on the unit area of the mirror surface of the heliostat, and T _wIndicating the temperature of the hot water, T ₀Indicating the freezing temperature.

The heating temperature of the water is matched with the heating power and the heating time in the heating device 10, and the heating time of the heating device 10 can be calculated according to the formula (2):

P×t＝C ₁M ₁ΔT ₁+C ₂M ₂ΔT ₂

M ₁＝ρ ₁V ₁,M ₂＝ρ ₂V ₂(2)

wherein P represents the heating power of the heating device 10; t represents a heating time; c ₁Denotes the specific heat capacity of water, M ₁Denotes the mass of water,. DELTA.T ₁Representing the temperature difference of the water; rho ₁Denotes the density of water, V ₁Representing the volume of the water tank; c ₂: specific heat capacity of gas, M ₁: mass of gas, Δ T ₂Representing the temperature rise difference of the gas; rho ₂Denotes the density, V, of the gas ₂Indicating the volume of the gas box.

Referring to fig. 3, in the preferred embodiment, the elastic pressure mechanism further includes a first regulation unit fixed to a wall of the gas storage tank 13 to regulate the first piston 12, and a second regulation unit for regulating the first piston 12 to return to an initial state after the first tank 13 is completely exhausted; the second adjusting unit is fixed on the wall of the water storage tank 9 and used for adjusting the second piston 8, and the second adjusting unit is used for adjusting the second piston 8 to return to the initial state after all the water in the second tank 9 is used up;

the initial state is the position of the first piston 12 when the gas storage tank 13 is filled with gas and the position of the second piston 8 when the water storage tank 9 is filled with water.

Referring to fig. 4, 5, the preferred embodiment, the first and second adjusting units each comprise a crank link 16, a gear transmission 18, a power unit, a control unit; the gear transmission 18 further comprises a large circular gear and a small circular gear which are meshed with each other, the power unit further comprises a turning screw 17, a clutch 25 and a running rotary bearing 24, the running spiral bearing 24 is installed on the axle of the tire of the cleaning platform, the control unit further comprises an upper limit sensor 22, a lower limit sensor 23 and a controller which are arranged at the uppermost position and the lowermost position of the piston stroke of the water storage tank 9 and the gas storage tank 13, and the controller for controlling the cleaning component in the cleaning mechanism are the same at the moment;

the turning screw 17 is composed of a plurality of sections, one end of the turning screw 17 is connected with the traveling spiral bearing 24 through a clutch 25, the other end of the turning screw 17 is connected with a large circular gear of the gear transmission 18, one end of a crank connecting rod 16 is connected with the large circular gear, the other end of the crank connecting rod 16 of the first adjusting unit is fixed on the first piston 12, and the other end of the crank connecting rod 16 of the second adjusting unit is fixed on the second piston 8;

the controller is electrically connected with the upper limit sensor 22, the lower limit sensor 23 and the clutch 25, and the controller controls the separation and combination of the clutch 25 according to signals of the upper limit sensor 22 and the lower limit sensor 23. By adopting the design adjusting unit, when water or gas in the box body is used up, the piston descends to the position of the lower limit sensor 23 at the moment, the lower limit sensor 23 sends a signal to the controller, the controller receives the signal, the controller controls the clutch 25 to combine the traveling spiral bearing 24 with the turning screw 17, the traveling spiral bearing 24 drives the turning screw 17 to move, the turning screw 17 drives the large gear of the gear transmission 18 to rotate, the crank connecting rod 16 and the small gear to rotate, the piston is driven to move upwards, when the piston moves to the position of the upper limit sensor 22, the initial position is the initial position in the initial state, the upper limit sensor 22 detects the piston and sends the signal to the controller, the controller controls the clutch 25 to separate the traveling spiral bearing 24 from the turning screw 17, and the adjusting unit is in the non-working state at the moment. When the piston moves to the position of the upper limit sensor 22, the external water replenishing and supplementing system adds water and gas, at the moment, the one-way air outlet valve and the one-way water outlet valve are closed, the one-way air inlet valve and the one-way water inlet valve are opened, the gas storage tank 13 supplements the gas from the outside, the water storage tank 9 supplements the water from the outside, and when the pressure of the gas storage tank 13 and the pressure of the water storage tank 9 are equal to that of the external gas replenishing and supplementing system, the tank body is filled with the water and the gas.

Referring to fig. 3, in the preferred embodiment, each of the first elastic unit 6 and the second elastic unit 19 includes a telescopic guide tube 602 and a spring 601, the telescopic guide tube 602 is sleeved on the spring 601, and the difference between the longest distance and the shortest distance of the telescopic guide tube is equal to the deformation displacement of the spring 601, and the telescopic guide tube 602 is sleeved outside the spring 601 to ensure that the spring 601 does not laterally displace. When the spring 601 is selected, the elastic force of the spring 601 is larger than the gravity of water, so as to ensure that the change of the elastic force of the spring 601 does not show obvious difference when the water level in the water storage tank 9 is lowered.

In the present invention, the cleaning platform may be a manually driven car or autonomous robot, or other vehicle, in this embodiment a straddle-type cleaning vehicle, and fig. 1 shows a simple schematic view of a straddle-type cleaning vehicle, in which the cleaning mechanism frame 20 is fixed to the support of the tire 21. A cleaning support 15 of the crossing type cleaning vehicle is parallel to a mirror surface of a flat heliostat to be cleaned, and a first water nozzle 5, a rolling brush 4, a second water nozzle 3, a first gas nozzle 2 and a second gas nozzle 1 are sequentially arranged on the cleaning support 15 from the front in the advancing and putting-in direction of the cleaning vehicle. The water pipe 7 and the gas pipe 14 are attached to the washing support 15, or the washing support 15 is a hollow support, and the water pipe 7 and the gas are provided in the hollow inside the washing support 15.

The working process of the cleaning device of the embodiment is as follows:

firstly, before the cleaning device is cleaned, if the cleaning device is in an initial state, the first piston 12 and the second piston 8 are both positioned at the position of the upper limit sensor 22, the traveling spiral bearing 24 is separated from the turning screw 17, water and gas are added into an external water supplementing and supplementing system, at this time, the one-way air outlet valve and the one-way water outlet valve are closed, the one-way air inlet valve and the one-way water inlet valve are opened, the gas storage tank 13 is supplemented with gas from the outside, the water storage tank 9 is supplemented with water from the outside, and when the pressure of the gas storage tank 13 and the pressure of the water storage tank 9 are equal to that of the external water supplementing and supplementing system, the tank body is filled with water and gas, and the heating. Heating water and gas, calculating the heat dissipation power phi 1, phi 2 and phi 3 of the heliostat in unit area according to the ambient temperature and the wind speed during cleaning, calculating the heating temperature of the water according to a formula (1), calculating the heating time of the heating device 10 according to a formula (2), and cleaning the heliostat in the next step after the water and the gas of the cleaning vehicle have cleaning conditions.

When the heliostat is cleaned, the first elastic unit 6 in a compressed state compresses gas through the first piston 12 by using elastic force to generate high-pressure gas, the second elastic unit 19 in a compressed state compresses water through the second piston 8 by using elastic force to generate high-pressure water, when the cleaning platform runs right ahead of the heliostat mirror surface, the controller sequentially controls the first liquid cleaning component driving motor, the rolling brush component driving motor, the second liquid cleaning component driving motor, the gas cleaning component driving motor and the drying device driving motor, further the first water nozzle 5, the rolling brush 4, the second water nozzle 3, the first gas nozzle 2 and the second gas nozzle 1 are sequentially opened, the mirror surface of the heliostat is sequentially and rapidly washed, scrubbed, washed, purged and dried for one time, so that the mirror surface is cleaned and not frozen in a very short time, and in the cleaning process, the one-way air outlet valve and the one-way water outlet valve of the gas storage tank 13 and the water storage tank 9 are opened, and the one-way air inlet valve and the one-way water inlet valve are closed.

If the cleaning device is used up with gas and water, the water storage tank and the gas storage tank are in an empty tank, and the piston descends to the position of the lower limit sensor 23, the cleaning vehicle compresses the spring 601 through the first adjusting unit and the second adjusting unit in the driving process from the mirror field to the cleaning water adding point, specifically, the lower limit sensor 23 detects the piston, the lower limit sensor 23 sends a signal to the controller, the controller receives the signal, the controller controls the clutch 25 to combine the driving spiral bearing 24 with the turning screw 17, the driving spiral bearing 24 drives the turning screw 17 to move, the turning screw 17 drives the large gear of the gear transmission 18 to rotate, further drives the crank connecting rod 16 to move and the small gear to rotate, further drives the first piston 12 and the second piston 8 to move upwards, at the moment, the one-way gas outlet valve and the one-way water outlet valve are closed, the one-way gas inlet valve and the one-way water inlet valve are opened, the gas storage tank 1313 and the water storage tank 9 are filled with appropriate amounts of gas and water, respectively, and at this time, the heating device 10 is turned on to heat the gas and water, and the heliostat is cleaned in the next step.

The main steps during cleaning are as follows:

the method comprises the following steps: firstly turning a target heliostat to be cleaned to a cleaning posture, enabling a cleaning vehicle to stably run right ahead of the surface of the heliostat, enabling a first water spray head 5 arranged on a transverse cleaning support 15 parallel to the surface of the heliostat to firstly contact the front edge of the heliostat, controlling the first water spray head 5 to firstly spray water by a controller, wetting and spraying the surface of the heliostat by high-pressure water, and needing enough water to completely wet the surface of the heliostat;

step two: then, when the rolling brush 4 contacts the front edge of the heliostat, the controller starts the rolling brush 4 to brush the heliostat mirror surface, and pushes the stain and the sewage to the direction of the uncleaned mirror surface (which is the same as the cleaning direction, namely the driving direction of the cleaning vehicle), so that the sewage does not flow to the cleaned mirror surface, and the thickness of the water layer is thinned;

step three: at the moment, when the spray head 3 contacts the front edge of the heliostat, the controller starts the second water spray head 3 to flush the heliostat with higher water pressure and proper water quantity, the stains are basically cleaned after the first water spray head 5 and the rolling brush 4 are cleaned, and the second water spray head 3 mainly aims at removing stubborn stains and treating cleaning sewage to clean the mirror surface;

step four: when the first gas nozzle 2 contacts the front edge of the heliostat, the controller starts the first gas nozzle 2, the first gas nozzle 2 purges the cleaned mirror surface at high speed and high pressure by using high-pressure gas, and the step has the characteristics of high gas flow speed and high pressure, and the cleaning water thin layer left after the step three is quickly blown to the cleaning direction, so that the purged mirror surface basically has no obvious stagnant water layer and does not generate water marks.

Step five: when the second gas nozzle 1 contacts the front edge of the heliostat, the controller starts the second gas nozzle 1, the second gas nozzle 1 blows the mirror surface obtained in the fourth step for drying by using high-pressure hot gas in a relatively long arrangement length, and water molecules on the cleaned mirror surface are removed mainly by using two modes of convection and heat conduction, so that the mirror surface becomes dry and does not freeze below the freezing point temperature.

Step six: the cleaning vehicle continues to advance and clean in the cleaning direction until the whole heliostat is cleaned, and after the heliostat is cleaned, the controller sequentially closes the cleaning components away from the rear edge of the heliostat, the cleaning vehicle runs to the front of the second heliostat, and the controller sequentially opens the cleaning components contacting the front edge of the second heliostat and starts cleaning the second heliostat.

Step seven: when the hot gas or hot water in the cleaning vehicle is exhausted (theoretically, the hot gas or hot water should be exhausted synchronously), the cleaning vehicle stops cleaning, at this time, the spring 601 reaches the longest displacement, the piston stroke reaches the position of the lower limit sensor 23, the lower limit sensor 23 sends a signal to the controller, the controller receives the signal, the controller controls the clutch 25 to combine the traveling spiral bearing 24 with the turning screw 17, the traveling spiral bearing 24 drives the turning screw 17 to move, the turning screw 17 drives the gearwheel of the gear transmission 18 to rotate, further drives the crank connecting rod 16 to move and the pinion to rotate, further drives the first piston 12 and the second piston 8 to move upwards, at this time, the one-way air outlet valve and the one-way water outlet valve are closed, the one-way air inlet valve and the one-way water inlet valve are opened, the gas storage tank 13 is filled with a proper amount of gas, the water storage tank 9 is filled with a, after the heating is finished, the cleaning of the next period is prepared, in the cleaning process, the heating can be carried out at any time as required, when the gas of the gas storage tank 13 is exhausted in advance compared with the water tank, the accessible control clutch 25 is closed, the spiral bearing 24 that makes to travel is connected with the turning screw 17, and then the rotation of the tire axle of the usable cleaning platform drives the crank connecting rod 16 and the gear transmission 18 to move, so that the first piston 12 is lifted to the position of the upper limit sensor 22 again, in the process that the first piston 12 is lifted to the position of the upper limit sensor 22 again, the external gas system can be sucked into the gas storage tank 13 through the air inlet one-way valve arranged on the gas storage tank 13, and then the gas in the gas storage tank 13 can be supplemented at any.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.