CN210572753U - Novel Doppler laser radar wind measurement structure - Google Patents

Abstract

The utility model relates to a laser radar anemometry structure, including the off-board machine, the off-board machine includes foot rest stand subassembly, go up the backup pad, the bottom suspension fagging, the mounting panel, a pair of main mirror mount subassembly, a pair of secondary mirror mount subassembly, the aircraft nose dustcoat, foot rest stand subassembly and bottom suspension fagging bottom fixed connection, the mounting panel is installed on last backup pad surface, main mirror mount subassembly and secondary mirror mount subassembly are installed on the mounting panel, the contained angle in the horizontal plane in the two tunnel laser paths on the mounting panel is 60 contained angles, the aircraft nose dustcoat is installed on the mounting panel, and cover main mirror mount subassembly and secondary mirror mount subassembly between aircraft nose dustcoat and mounting panel, and install the glass window on the aircraft nose dustcoat adjacent with main mirror mount subassembly on main mirror mount subassembly and secondary mirror mount subassembly formation laser path direction. The utility model discloses low-cost, measurement accuracy height, accurate measurement fan the place ahead wind speed wind direction can let the gust realize the paddle feathering and the driftage of fan in advance before the fan.

Description

Novel Doppler laser radar wind measurement structure

Technical Field

The utility model belongs to the technical field of electromechanical device, especially, relate to a novel Doppler laser radar anemometry structure.

Background

Wind power system's fan is when the operation, obtain wind speed value and wind direction angle through the anemorumbometer who installs at the cabin top, this kind of traditional anemoscope has an drawback, can not measure in advance and the wind speed wind direction in response fan the place ahead, only when wind skims over the fan, just can survey wind speed wind direction value, the hypothesis blows over when a rush of very big gust, and the fan can not foresee in advance again, can certainly lead to serious damage to the fan, even do not have the problem at that time, nevertheless under long-term day, the fan always can damage one day, serious still can lead to the fan driving, bring very big economic loss for fan manufacturer and owner.

Therefore, based on the problems, the Doppler laser radar wind measurement structure is low in cost, high in measurement accuracy and capable of accurately measuring the wind speed and the wind direction in front of the fan, the feathering and the yawing of the blades of the fan can be realized in advance before gusts of wind reach the fan, the stress load of the fan is reduced, the fan is prevented from being damaged, and the Doppler laser radar wind measurement structure has important practical significance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a low cost, measurement accuracy is high, accurate measurement fan the place ahead wind speed wind direction, can let the gust realize the paddle feathering and the driftage of fan in advance before the fan, reduce fan atress load, avoid the Doppler laser radar anemometry structure of fan damage.

The utility model provides a its technical problem take following technical scheme to realize:

a novel Doppler laser radar wind measuring structure comprises an outdoor unit, wherein the outdoor unit comprises a foot support frame assembly, an upper support plate, a lower support plate, a mounting plate, a pair of main mirror fixing frame assemblies, a pair of secondary mirror fixing frame assemblies and a machine head outer cover, a main mirror and a secondary mirror are respectively arranged in the main mirror fixing frame assemblies and the secondary mirror fixing frame assemblies, the foot support frame assemblies are fixedly connected with the bottom of the lower support plate, one side of the upper support plate is connected with one side of the lower support plate through a hinge type structure, the opposite side of the hinge connection of the upper support plate and the lower support plate is detachably connected in the direction of a vertical support plate, so that the angle of the upper support plate relative to the lower support plate is adjustable, the mounting plate is mounted on the surface of the upper support plate, the main mirror fixing frame assemblies and the secondary mirror fixing frame assemblies are mounted on the mounting plate, and one main mirror fixing frame assembly and, the contained angle in the two way laser route on the mounting panel is 60 contained angles in the horizontal plane, the aircraft nose dustcoat is installed on the mounting panel, and will primary mirror mount subassembly and secondary mirror mount subassembly cover between aircraft nose dustcoat and mounting panel, and install the glass window on primary mirror mount subassembly and secondary mirror mount subassembly form the laser route direction on and the aircraft nose dustcoat that primary mirror mount subassembly is adjacent for two bundles of laser can see through the glass window and jet into in the atmosphere.

Further, still include the cabin interior control machine, the cabin interior control machine contains fin, optic fibre and walks line mounting panel, laser instrument, power amplifier, balanced detector, FPGA and DSP control panel, laser instrument transmission laser is enlargied through power amplifier to through primary mirror and secondary mirror transmission, balanced detector turns back light signal into the signal of telecommunication to give FPGA and DSP control panel with the signal of telecommunication transmission, FPGA and DSP control panel gather, filter and calculate wind speed and direction value to transmit for fan cabin master control system by RS485 or ethernet communication.

Further, still include lightning protection antenna module, lightning protection antenna module includes antenna, antenna top fixed block and antenna bottom fixed block, the fixed setting of antenna bottom is in bottom sprag board bottom surface, the antenna both ends insert respectively antenna bottom fixed block.

Furthermore, the number of the antennas is at least two, the antennas are distributed in a crossed mode, and the antennas are fixed at the crossed position through a fixed block at the top of the antennas.

Further, primary mirror mount subassembly contains primary mirror fore-stock, primary mirror after-poppet, primary mirror, all be equipped with circular through-hole on primary mirror fore-stock and the primary mirror after-poppet, the primary mirror is located between primary mirror fore-stock and the primary mirror after-poppet, and primary mirror after-poppet and primary mirror fore-stock, primary mirror contact department are equipped with sealed the pad.

Further, secondary mirror mount subassembly includes secondary mirror mount, secondary mirror, be equipped with step type through-hole on the secondary mirror mount, the secondary mirror is located in the through-hole, and one side is spacing by the step, and the opposite side is spacing through the baffle, be equipped with the hole that supplies the laser to pass on the baffle, baffle and secondary mirror mount junction are equipped with sealed the pad, still be equipped with the collimater on the secondary mirror mount, the center of secondary mirror and collimater is on same water flat line.

Further, the foot support frame subassembly is 3 at least, and the symmetric distribution is in the bottom sprag board bottom surface, foot support frame subassembly includes unable adjustment base, leg connection base, supporting leg, and the rubber shock pad has been pasted to the unable adjustment base below, unable adjustment base and leg connection base pass through fixing bolt and connect, and the supporting leg is connected the base with the leg and is equipped with the screw hole in terminal surface department, through stud fixed connection, the supporting leg other end with the connection can be dismantled to the bottom sprag board bottom surface.

Further, still include the spacing subassembly of foot mount, the spacing subassembly of foot mount includes central stopper, the spacing seat ear of supporting leg and limiting plate, the both ends of limiting plate respectively with central stopper, the spacing seat ear fixed connection of supporting leg, just the spacing seat ear of supporting leg with supporting leg fixed connection.

Furthermore, the supporting leg limiting seat ears are of a door-shaped structure, planes are milled on the supporting legs and embedded into the door-shaped supporting leg limiting seat ears, and the supporting leg limiting seat ears are fixedly connected with the plane parts of the supporting legs.

Furthermore, the outer surface bending part of the machine head outer cover adopts an arc surface structure.

The utility model has the advantages that:

1. the utility model can measure the wind speed and wind direction information about 70 meters in front of the fan, so that the fan can respond to the change of the propeller in advance, the impact load of wind power on the fan is reduced, and the service life of the fan is prolonged;

2. the angle of the machine head can be adjusted up and down, so that the use requirements of different fan models are met; the receiving and transmitting optical path system is designed by using all optical fibers, is not interfered by electromagnetism and other external factors, and has the advantages of high stability, high measurement precision, accurate measurement value and the like.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a doppler lidar wind-finding structure provided by an embodiment of the present invention;

fig. 2 is a front view of an indoor control machine provided by an embodiment of the present invention;

fig. 3 is an internal view of an indoor controller provided by an embodiment of the present invention;

fig. 4 is a front view of an outboard engine provided by an embodiment of the present invention;

fig. 5 is an external view of an outboard leg support frame assembly provided in an embodiment of the present invention;

fig. 6 is an internal view of an outboard engine head provided by an embodiment of the present invention;

fig. 7 is a system connection block diagram provided by the embodiment of the present invention;

fig. 8 is an internal view of an indoor controller provided by an embodiment of the present invention;

fig. 9 is a front view of an outboard foot support frame assembly provided by an embodiment of the present invention;

fig. 10 is a schematic structural view of a limiting assembly of an outboard engine foot fixing frame according to an embodiment of the present invention;

fig. 11 is a view of a lower support plate structure of an outboard engine provided in an embodiment of the present invention;

fig. 12 is a top view of an internal structure of the outboard engine provided in the embodiment of the present invention;

fig. 13 is a structural view of a secondary mirror fixing frame assembly outside the cabin provided in the embodiment of the present invention;

fig. 14 is a structural view of a main mirror fixing frame assembly of the outboard motor provided in the embodiment of the present invention;

fig. 15 is a structural view of an outboard engine head housing provided in an embodiment of the present invention;

fig. 16 is a structural view of an outboard engine lightning protection antenna assembly provided by an embodiment of the present invention;

fig. 17 is a schematic structural diagram of an in-cabin controller according to an embodiment of the present invention;

fig. 18 is a sectional view of a structure of a secondary mirror fixing frame assembly of an outboard engine provided in an embodiment of the present invention;

fig. 19 is a sectional view of a structure of a main mirror fixing frame assembly of the outboard motor provided in the embodiment of the present invention;

in the figure:

1-outdoor unit 2-in-cabin controller 3-foot support frame assembly 4-lower support plate 5-upper support plate 6-foot fixing frame limiting assembly 7-lightning protection antenna assembly 8-handpiece outer cover 9-main mirror fixing frame assembly 10-secondary mirror fixing frame assembly 11-mounting plate 12-radiating fin 13-optical fiber routing mounting plate 14-balance detector 15-FPGA and DSP control plate 16-fixing base 17-rubber shock pad 18-leg connecting base 19-fixing bolt 20-stud 21-supporting leg 22-central limiting block 23-supporting leg limiting seat ear 24-limiting plate 25-ground wire mounting hole 26-secondary mirror fixing frame 27-baffle 28-sealing pad 29-collimator cover plate 30-main mirror front support Frame 31-main mirror rear support 32-sealing gasket 33-main mirror 34-secondary mirror 35-glass window 36-laser 37-power amplifier 38-antenna 39-antenna bottom fixing block 40-antenna top fixing block 41-collimator 42-sealing strip 43-coupler

Detailed Description

First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 19.

Example 1

As shown in fig. 1 to 19, the novel doppler lidar wind measurement structure provided by this embodiment includes an outdoor unit 1, the outdoor unit 1 includes a foot support frame assembly 3, an upper support plate 5, a lower support plate 4, a mounting plate 11, a pair of primary mirror fixing frame assemblies 9, a pair of secondary mirror fixing frame assemblies 10, and a machine head housing 8, a primary mirror 33 and a secondary mirror 34 are respectively disposed in the primary mirror fixing frame assemblies 9 and the secondary mirror fixing frame assemblies 10, the foot support frame assemblies 3 are fixedly connected to the bottom of the lower support plate 4, one side of the upper support plate 5 is connected to one side of the lower support plate 4 through a hinge structure, one side of the upper support plate 5 opposite to the hinge connection of the lower support plate 4 is detachably connected in a direction perpendicular to the support plate, so that the upper support plate 5 is adjustable in angle relative to the lower support plate 4, and the machine head angle of the outdoor, in this embodiment, specifically: the lower supporting plate 4 is provided with an arc hole, and the upper supporting plate 5 arranged at the upper part can adjust the angle in a bolt connection mode through the arc hole; the mounting panel 11 is installed on 5 surfaces of last backup pad, primary mirror mount subassembly 9 and secondary mirror mount subassembly 10 are installed on mounting panel 11, and a primary mirror mount subassembly 9 and a secondary mirror mount subassembly 10 form laser path all the way, the contained angle in the horizontal plane on the mounting panel 11 on two way laser path is 60 contained angles, aircraft nose dustcoat 8 is installed on mounting panel 11, and will primary mirror mount subassembly 9 and secondary mirror mount subassembly 10 cover between aircraft nose dustcoat 8 and mounting panel 11, and primary mirror mount subassembly 9 and secondary mirror mount subassembly 10 form and install glass window 35 on the aircraft nose dustcoat 8 adjacent with primary mirror mount subassembly 9 on the laser path direction for two bundles of laser can penetrate glass window 35 and penetrate into the atmosphere, it needs to point out that, the outer surface department of bending of aircraft nose dustcoat 8 all adopts cambered surface structure, the wind resistance can be reduced.

Furthermore, the present invention can also be considered in the present invention, further comprising an in-cabin controller 2, wherein the in-cabin controller 2 comprises a heat sink 12, an optical fiber routing mounting plate 13, a laser 36, a power amplifier 37, a balanced detector 14, an FPGA and a DSP control board 15, the laser 36 emits laser, which is amplified by the power amplifier 37 and emitted by the primary mirror 33 and the secondary mirror 34, the balanced detector 14 converts the return light signal into an electrical signal and transmits the electrical signal to the FPGA and the DSP control board 15, the FPGA and the DSP control board 15 collects, filters and calculates the wind speed and direction value, and transmits the wind speed and direction value to the main control system of the blower cabin through RS485 or ethernet communication; it should be noted that the heat sink 12 is mainly used for heat dissipation of the heating device, the heating device includes optical elements such as a multimode pump driver, a single-mode pump driver, and a laser, and it should be noted that the heating element uses an isolation design, is distributed at the bottom of the cabin interior controller 2, and is provided with the heat sink 12 to assist in heat dissipation; other optical elements such as an optical power isolator, a coupler, a circulator and the like are installed in the semicircular groove of the optical fiber routing installation plate 13, meanwhile, the optical fiber laying path of the optical fiber routing installation plate 13 also adopts a groove design, and after laying is finished, glue is filled in the groove to seal the optical fiber, so that the optical fiber can stably work without damage and breakage in a vibration environment; and a balance detector 14 is arranged below the optical fiber wiring mounting plate 13 and is used for converting optical signals into electric signals, collecting, filtering and calculating wind speed and wind direction values of the converted electric signals by an FPGA (field programmable gate array) and DSP (digital signal processor) control panel 15, and finally transmitting the wind speed and wind direction values to a fan cabin main control system by RS485 or Ethernet communication.

Still further, can also be in the utility model discloses in consider, still include lightning protection antenna assembly 7, lightning protection antenna assembly 7 includes antenna 38, antenna bottom fixed block 39 is fixed to be set up 4 bottom surfaces of bottom suspension fagging, insert respectively at the antenna 38 both ends antenna bottom fixed block 39, in this embodiment, antenna 38 is two, just antenna 38 cross distribution fixes through antenna top fixed block 40 in antenna 38 cross section, and wherein, antenna bottom fixed block 39 and antenna top fixed block 40 as long as can realize the effect of fixed antenna 38 can, needn't be restrained in concrete structure.

It should be noted that primary mirror mount subassembly 9 contains primary mirror fore-stock 30, primary mirror after-poppet 31, primary mirror 33, all be equipped with circular through-hole on primary mirror fore-stock 30 and the primary mirror after-poppet 31, the through-hole is for the installation of convenient primary mirror 33, fixed and follow-up laser's transmission sees through, primary mirror 33 is located between primary mirror fore-stock 30 and the primary mirror after-poppet 31, and primary mirror after-poppet 31 and primary mirror fore-stock 30, primary mirror 33 contact department are equipped with sealed pad 32, and sealed pad 32 mainly compresses tightly and protects primary mirror 33's effect, prevents that primary mirror 33 from directly vibrating after-contacting with the metal and damaging.

It should be noted that, secondary mirror mount assembly 10 includes secondary mirror mount 26, secondary mirror 34, be equipped with step type through-hole on the secondary mirror mount 26, secondary mirror 34 is located in the through-hole, and one side is spacing by the step, and the opposite side is spacing through baffle 27, be equipped with the hole that supplies the laser to pass on the baffle 27, baffle 27 and secondary mirror mount 26 junction are equipped with sealed pad 28, and the sealed pad of baffle is the same with the sealed pad function of above-mentioned primary mirror, prevent that the secondary mirror from receiving the vibration damage, still be equipped with collimator 41 on the secondary mirror mount 26, the center of secondary mirror 34 and collimator 41 is on same horizontal line, need to explain, like fig. 18, collimator 41 puts into secondary mirror mount 26 semicircular groove, covers collimator apron 29, and collimator apron 29 pastes and has the sealing strip, and protection and fixed compression collimator.

Furthermore, it can be considered in this embodiment that the number of the foot support frame assemblies 3 is 3, and the foot support frame assemblies 3 are symmetrically distributed on the bottom surface of the lower support plate 4, each foot support frame assembly 3 includes a fixing base 16, a leg connecting base 18, and a support leg 21, a rubber shock pad 17 is adhered below the fixing base 16, and can play a role in shock absorption and buffering, the fixing base 16 and the leg connecting base 18 are connected through a fixing bolt 19, the support leg 21 and the leg connecting base 18 are provided with a threaded hole at the end surface, and are fixedly connected through a stud bolt 20, the other end of the support leg 21 is detachably connected with the bottom surface of the lower support plate 4, it needs to be described that 3 groups of seat ears are designed on the lower portion of the lower support plate 4, and the support leg 21 can be installed on the 3; in this embodiment, the leg connecting base 18 is screwed to the stud bolt 20 at one end and to the lug of the base 16 at the other end by the fixing bolt 19.

The foot fixing frame limiting assembly 6 comprises a central limiting block 22, supporting leg limiting seat lugs 23 and a limiting plate 24, wherein the central limiting block 22 is cylindrical in main body shape, three lug pieces are arranged on the side wall of the central limiting block 22, the central limiting block 22 is fixedly connected with the limiting plate 24 through the lug pieces, two ends of the limiting plate 24 are fixedly connected with the central limiting block 22 and the supporting leg limiting seat lugs 23 respectively, and the supporting leg limiting seat lugs 23 are fixedly connected with the supporting legs 21; it should be noted that the spacing seat ear 23 of supporting leg is door style of calligraphy structure, just it has the plane and imbeds the spacing seat ear 23 of door style of calligraphy supporting leg to mill on the supporting leg 21, the spacing seat ear 23 of supporting leg with the plane position fixed connection of supporting leg 21, and also be equipped with the auricle on the spacing seat ear 23 of supporting leg of door style of calligraphy structure, auricle and limiting plate 24 fixed connection.

It should be noted that, the fixing and connecting method of the present invention adopts conventional means such as bolts, rivets, welding, etc. which are mature in the prior art, and is not described herein again, but due to the above reasons, the repeated reproduction of the technicians in the field will not be affected.

As an example, in the utility model, the head cover is mounted on the mounting plate, the head cover is provided with the glass window to ensure that two beams of laser can be injected into the atmosphere through the glass, and meanwhile, a groove is arranged on the fitting surface of the head cover and the mounting plate, and a circular sealing strip 42 is mounted in the groove to ensure that rainwater and dust can not enter the head cover; when the lightning protection antenna assembly is installed, the bottom fixing block is installed below the lower supporting plate, then the top fixing block is installed to completely fix the antenna, the lower supporting plate is provided with a ground wire installation hole 25, the ground wire can be connected to the position of the ground wire of the cabin, and when the aircraft outside the cabin is struck by lightning, lightning current can be discharged into the ground through the ground wire.

By way of example, in this embodiment: the laser in the cabin controller emits laser, which is divided into two beams through the power amplifier and the coupler 43, enters the balance detector, passes through the collimator of the cabin outer unit and is emitted into the atmosphere through the secondary mirror and the primary mirror, and the two beams of laser form an angle of 60 degrees. The position 80 meters ahead of the laser path is an effective measurement distance, laser contacts aerosol particles in the atmosphere within the distance to form reflection, return light is formed, the return light returns to the balance detector after passing through the primary mirror, the secondary mirror and the collimator, the balance detector converts optical signals into electric signals and inputs the electric signals to the FPGA and the DSP control panel for filtering, analysis and logic calculation, and finally two 80-meter measurement points are coupled to form a rear middle point, namely wind speed and wind direction information at the position about 70 meters ahead of the fan, so that the fan performs pitch control and yaw response in advance, the impact load of wind power on the fan is reduced, and the service life of the fan is prolonged.

To sum up, the utility model discloses can provide a low cost, measurement accuracy is high, accurate measurement fan the place ahead wind speed wind direction, can let the gust realize the paddle feathering and the driftage of fan in advance before the fan, reduce fan atress load, avoid the Doppler laser radar anemometry structure of fan damage.

The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (10)

1. The utility model provides a novel Doppler laser radar anemometry structure which characterized in that: the device comprises an outdoor unit, the outdoor unit comprises a foot support frame assembly, an upper support plate, a lower support plate, a mounting plate, a pair of main mirror fixing frame assemblies, a pair of secondary mirror fixing frame assemblies and a machine head outer cover, wherein a main mirror and a secondary mirror are respectively arranged in the main mirror fixing frame assemblies and the secondary mirror fixing frame assemblies, the foot support frame assemblies are fixedly connected with the bottom of the lower support plate, one side of the upper support plate is connected with one side of the lower support plate through a hinge type structure, one side of the upper support plate, opposite to the hinge connection of the lower support plate, is connected in a lifting and dismounting manner in the direction of the vertical support plate, so that the upper support plate can adjust the angle relative to the lower support plate, the mounting plate is mounted on the surface of the upper support plate, the main mirror fixing frame assemblies and the secondary mirror fixing frame assemblies are mounted on the mounting, the contained angle in the two way laser route on the mounting panel is 60 contained angles in the horizontal plane, the aircraft nose dustcoat is installed on the mounting panel, and will primary mirror mount subassembly and secondary mirror mount subassembly cover between aircraft nose dustcoat and mounting panel, and install the glass window on primary mirror mount subassembly and secondary mirror mount subassembly form the laser route direction on and the aircraft nose dustcoat that primary mirror mount subassembly is adjacent for two bundles of laser can see through the glass window and jet into in the atmosphere.

2. The novel doppler lidar wind-finding structure of claim 1, wherein: still include the cabin interior control machine, the cabin interior control machine contains fin, optic fibre and walks line mounting panel, laser instrument, power amplifier, balanced detector, FPGA and DSP control panel, laser instrument transmission laser is enlargied through power amplifier to through primary mirror and secondary mirror transmission, balanced detector turns back light signal into the signal of telecommunication, and gives FPGA and DSP control panel with the signal of telecommunication transmission, FPGA and DSP control panel gather, filter and calculate wind speed and direction value to give fan cabin master control system by RS485 or ethernet communication transmission.

3. A novel doppler lidar wind-finding structure according to claim 1 or 2, wherein: still include lightning protection antenna module, lightning protection antenna module includes antenna, antenna top fixed block and antenna bottom fixed block, the fixed setting of antenna bottom fixed block is in the bottom sprag board bottom surface, insert respectively at the antenna both ends the antenna bottom fixed block.

4. The novel doppler lidar wind-finding structure of claim 3, wherein: the antenna cross distribution is fixed through an antenna top fixing block at the antenna cross position.

5. The novel doppler lidar wind-finding structure of claim 1, wherein: the primary mirror fixed frame component comprises a primary mirror front support, a primary mirror rear support and a primary mirror, wherein circular through holes are formed in the primary mirror front support and the primary mirror rear support, the primary mirror is located between the primary mirror front support and the primary mirror rear support, and a sealing gasket is arranged at the contact position of the primary mirror rear support and the primary mirror front support and the primary mirror.

6. The novel doppler lidar wind-finding structure of claim 1, wherein: the secondary mirror fixing frame assembly comprises a secondary mirror fixing frame and a secondary mirror, a step-shaped through hole is formed in the secondary mirror fixing frame, the secondary mirror is located in the through hole, one side of the secondary mirror is limited by the step, the other side of the secondary mirror is limited by a baffle, a hole for laser to penetrate through is formed in the baffle, a sealing gasket is arranged at the joint of the baffle and the secondary mirror fixing frame, a collimator is further arranged on the secondary mirror fixing frame, and the centers of the secondary mirror and the collimator are on the same horizontal line.

7. The novel doppler lidar wind-finding structure of claim 1, wherein: the utility model discloses a leg support, including base, foot support frame subassembly, unable adjustment base, supporting leg, rubber shock pad, unable adjustment base and leg connection base, the foot support frame subassembly is 3 at least, and the symmetric distribution is in the bottom sprag board bottom surface, foot support frame subassembly includes unable adjustment base, leg connection base, supporting leg, and the unable adjustment base below is pasted and is had rubber shock pad, unable adjustment base and leg connection base pass through fixing bolt and connect, and the supporting leg is connected the base with the leg and is equipped with the screw hole in terminal surface department, through stud fixed connection, the supporting.

8. The novel doppler lidar wind-finding structure of claim 7, wherein: the foot fixing frame limiting assembly comprises a central limiting block, a supporting leg limiting seat ear and a limiting plate, wherein the two ends of the limiting plate are respectively fixedly connected with the central limiting block and the supporting leg limiting seat ear, and the supporting leg limiting seat ear is fixedly connected with the supporting leg.

9. The novel doppler lidar wind-finding structure of claim 8, wherein: the support leg limiting seat ears are of a door-shaped structure, planes are milled on the support legs and are embedded into the door-shaped support leg limiting seat ears, and the support leg limiting seat ears are fixedly connected with the plane parts of the support legs.

10. The novel doppler lidar wind-finding structure of claim 1, wherein: the outer surface of the nose outer cover is bent to form an arc surface structure.

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