Heliostat reflector base plate convenient to replace

Abstract

The utility model relates to the technical field of heliostat installation, and particularly discloses a heliostat reflector base plate convenient to replace. Comprising a fixing pin, a base connected with the reflector, and a locking piece used for fixing one end of the fixing pin on the base. The locking piece comprises a connecting sleeve which is arranged on the base and provided with an inner threaded hole and a locking nut which is arranged on the outer side of the fixing pin in a sleeving mode and connected with the connecting sleeve. According to the utility model, the fixed pin is used as a connecting piece connected with the bracket, so that the movable attachment with the bracket can be realized, and the problems of left-right movement in the direction of the reflecting surface, height difference in the normal direction of the reflecting surface and inclination relative to the normal of the reflecting surface are effectively solved; the boss is arranged on the base, so that inclination between the base and the reflecting mirror is avoided, and the surface shape quality of the reflecting mirror is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heliostat installation technical field more particularly, relate to a convenient replacement's heliostat mirror backing plate. BACKGROUND

[0002] In the tower type photo-thermal power generation technology, the shape of the heliostat reflecting surface needs to be accurately close to a parabolic surface with a large focal length (usually 300m to 1000m).

[0003] A common method for forming such a curved surface is to arrange multiple support points on the reflecting surface and form the required curved surface by adjusting the heights of the different support points.

[0004] For example:

[0005] CN104160221A discloses a support system for the facets of a heliostat, which describes a movable attachment achieved by using a connecting plate and a bolt assembly with adjustable position.

[0006] WO2018048890A1 describes a structure for connecting the heliostat reflecting surface to the support, which overcomes the inclination of the screw rod during installation by adding a rotatable sleeve in the threaded structure.

[0007] CN108474590A discloses a support for arranging the mirror surface on a heliostat and a method for manufacturing the heliostat, which uses the purpose of achieving accurate positioning of two connecting parts by using glue solidification in DE102008010884A1. Compared with the bolt structure, this method has a higher adjustment range in the two directions parallel to the reflecting surface, and also solves the problem of inclination of the screw rod relative to the support. Furthermore, through a connecting unit that can be inserted into the backing plate (base), the mirror can be replaced simply and conveniently; although it well solves the problems of surface shape accuracy and replacement, it still has the following shortcomings:

[0008] The connection between the connecting unit and the base is a gap connection, which is a compromise for installation convenience, but this will make the reflecting surface as a skin not tightly connected on the mirror frame, and the connection is a gap connection, otherwise it will be difficult to install and vibrate during operation due to wind; the contact between the support and the fixing pin will still be caused by manufacturing deviation, thereby causing the inclination of the fixing pin due to assembly force, although this problem can be solved by the gap between the two, but it will undoubtedly increase the amount of glue; such inclination will cause the distortion of the reflecting surface, reducing the optical quality of the reflecting surface; the uneven thickness of the glue between the backing plate and the mirror will affect the quality of the reflecting surface to some extent. UTILITY MODEL CONTENTS

[0009] The technical problem to be solved by the utility model is to provide a convenient replacement's heliostat mirror backing plate;

[0010] The utility model solves technical problem adopts the solution of the solution is:

[0011] A convenient fixed heliostat mirror backing plate, including fixed pin, with the base connected with the mirror, for the fixed pin is fixed on the base on the locking piece, the locking piece includes the connecting sleeve of setting on the base and having the internal thread hole, the locking nut of being sleeved on the fixed pin outside and being connected with the connecting sleeve.

[0012] In some possible implementation, the locking nut includes the threaded section with external thread, and the rotating platform connected with the threaded section away from the base one end, the threaded section is provided with the through hole for the fixed pin to pass through;

[0013] In some possible implementation, the fixed pin includes the limit end portion with the base contact abutment and limit the fixed pin and the connecting sleeve separation, the pin rod connected with the limit end portion away from the base one end.

[0014] In some possible implementation, the locking nut is provided with the contact surface of limit end portion contact cooperation;

[0015] The limit end portion is partially or entirely located on the outside of the locking nut and respectively with the contact surface of locking nut, the base contact abutment;

[0016] The contact surface is spherical surface, conical surface or plane.

[0017] In some possible implementation, the limit end portion is spherical structure and is coaxially arranged with the pin rod, the radius of the spherical structure is greater than the radius of the through hole;

[0018] The locking nut is provided with the spherical cap groove matched with the limit end portion away from the rotating platform one end, and the contact surface is the inner side surface of the spherical cap groove;

[0019] The spherical cap groove is coaxial with the through hole and is communicated, and the depth of the spherical cap groove along the axial direction of the through hole is less than the radius of the spherical structure.

[0020] In some possible implementation, the limit end portion is conical frustum structure, and is coaxially arranged with the pin rod;

[0021] The radius of the large end of the conical frustum structure is greater than the radius of the through hole;

[0022] The locking nut is provided with the conical groove matched with the limit end portion away from the rotating platform one end, and the contact surface is the inner side surface of the conical groove;

[0023] The conical groove is coaxial with the through hole and is communicated, and the end of the conical frustum structure away from the pin rod will be the outside of the conical groove.

[0024] In some possible implementation manners, the limiting end portion is a cylindrical structure and is coaxially arranged with the pin rod, an outer diameter of the cylindrical structure is greater than an inner diameter of the through hole, the contact surface is a plane and is arranged on an end surface of the lock nut away from the rotary table, and an end of the limiting end portion away from the pin rod is in contact with the base.

[0025] In some possible implementation manners, the base is coaxially arranged with the connecting sleeve, and a reinforcing rib for connecting the base and the connecting sleeve is arranged on the base.

[0026] In some possible implementation manners, a plurality of groups of bosses are arranged on a side of the base away from the connecting sleeve.

[0027] Compared with the prior art, the utility model has the beneficial effects that:

[0028] The utility model discloses a fixing pin as a connecting piece connected with the support, and the movable attachment with the support can be realized, so that the left and right movement in the direction of the reflecting surface, the height difference in the normal direction of the reflecting surface and the inclination relative to the normal of the reflecting surface are effectively solved.

[0029] The utility model discloses a fixing pin as a connecting piece connected with the support, and the movable attachment with the support can be realized, so that the left and right movement in the direction of the reflecting surface, the height difference in the normal direction of the reflecting surface and the inclination relative to the normal of the reflecting surface are effectively solved.

[0030] The utility model discloses a fixing pin as a connecting piece connected with the support, and the movable attachment with the support can be realized, so that the left and right movement in the direction of the reflecting surface, the height difference in the normal direction of the reflecting surface and the inclination relative to the normal of the reflecting surface are effectively solved.

[0031] The utility model discloses a fixing pin as a connecting piece connected with the support, and the movable attachment with the support can be realized, so that the left and right movement in the direction of the reflecting surface, the height difference in the normal direction of the reflecting surface and the inclination relative to the normal of the reflecting surface are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the connecting relation schematic drawing of the utility model;

[0033] Figure 2 It is the internal structure schematic drawing of the utility model;

[0034] Figure 3 It is the connecting relation schematic drawing of the base, the reinforcing rib and the connecting sleeve in the utility model;

[0035] Figure 4 It is the structure schematic drawing of the base and the boss in the utility model;

[0036] Figure 5 It is the structure schematic drawing of the lock nut in the utility model;

[0037] Figure 6 is a cylindrical structure, a connection relationship schematic diagram with the locking nut is shown in the utility model;

[0038] Figure 7 is a cylindrical structure, a connection relationship schematic diagram with the locking nut is shown in the utility model;

[0039] Figure 8 is a tapered structure, a connection relationship schematic diagram with the locking nut is shown in the utility model;

[0040] Figure 9 is a working flow schematic diagram when the utility model is used to replace the reflector;

[0041] 1, fixed pin; 11, limiting end; 12, pin rod; 2, base; 21, boss; 3, locking piece; 31, connecting sleeve; 311, internal thread hole; 32, locking nut; 321, threaded section; 322, rotary table; 3211, contact surface; 4, reinforcing rib; 10, reflector; 20, support. DETAILED DESCRIPTION

[0042] In the utility model, unless another explicit provision and limitation, the terms "installation", "connection", "connecting", "fixing" and the like terms should be broad sense understanding, for example, can be fixed connection, can also be detachable connection, or integrated; can be directly connected, can also be indirectly connected through the intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. The "first", "second" and similar words mentioned in the application do not represent any order, quantity or importance, but only distinguish different components. Similarly, "one" or "a" and the like similar words do not represent quantity limit, but represent the existence of at least one. In the implementation of the application, the association relationship of the associated object is described, which means that there can be three kinds of relationships, for example, A and / or B, which can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of the application, unless otherwise specified, the meaning of "multiple" is two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] The utility model will be described in detail below.

[0044] As Figures 1-9 shown:

[0045] The utility model provides a convenient to replace heliostat mirror 10 backing plate, including fixing pin 1, base 2 connected with mirror 10, locking piece 3 for fixing one end of fixing pin 1 on base 2, locking piece 3 includes the connecting sleeve 31 of setting on base 2 and having inner threaded hole 311, locking nut 32 of being sleeved on the outside of fixing pin 1 and being connected with connecting sleeve 31, base 2, locking nut 32, connecting sleeve 31 adopt plastics or metal to be made,

[0046] In use, first, base 2 is pasted and fixed with mirror 10 by bonding;

[0047] Specifically, when pasting, the bonding glue used is silicone glue;

[0048] Then, the whole structure formed by the bottom plate and mirror 10 is placed in a high-temperature environment for curing;

[0049] After mirror 10 and base 2 are cured and shaped, fixing pin 1 is connected with base 2 through locking piece 3;

[0050] Specifically, first, one end of fixing pin 1 is inserted into connecting sleeve 31 on base 2, and then locking nut 32 is moved along the axial direction of fixing pin 1, so that locking nut 32 is connected with connecting sleeve 31, and fixing pin 1 is fixedly connected with base 2;

[0051] Fixing pin 1 will serve as a connecting piece connected with support 20, and can realize movable attachment with support 20, so as to effectively solve the left-right movement in the direction of the reflecting surface, the height difference in the normal direction of the reflecting surface, and the inclination relative to the normal of the reflecting surface;

[0052] Fixing pin 1 is installed after base and mirror 10 are cured and shaped, so that when base and mirror 10 are cured, the space occupied can be reduced due to the absence of fixing pin 1.

[0053] The utility model discloses a locking nut 32 and connecting sleeve 31 design, reduce the installation gap, be favorable to the surface quality, improve the service life of mirror 10, and the connecting mode of locking nut 32 and connecting sleeve 31 is simple, and it is convenient for later maintenance.

[0054] In some possible embodiments, the locking nut 32 includes a threaded segment 321 with external threads, and a turntable 322 connected to the end of the threaded segment 321 away from the base 2; the threaded segment 321 is provided with a through hole 320 for the fixing pin 1 to pass through.

[0055] Further, the turntable 322 can be a circular segment structure, a hexagonal structure, a square structure, etc., which is mainly used for conveniently applying torque to effectively connect the locking nut 32 with the connecting sleeve 31.

[0056] The turntable 322 is provided with a through hole, which is coaxial with the through hole 320 and has the same size as that of the through hole, so as to ensure that the locking nut 32 can be fitted onto the outside of the fixing pin 1;

[0057] In some possible embodiments, in order to effectively fix the fixing pin 1, the base 2 and the reflector 10 on the base 2 can be effectively supported by the fixing pin 1; the fixing pin 1 includes a limiting end 11 that contacts and abuts the base 2 and limits the separation of the fixing pin 1 from the connecting sleeve 31, and a pin rod 12 connected to the end of the limiting end 11 away from the base 2; the radius of the through hole 320 is greater than the radius of the pin rod 12.

[0058] The pin 12 is used to connect with the bracket 20, and the connection can be achieved by threading or gluing;

[0059] When threaded connection is adopted, an external thread is provided on the pin rod 12 ; when adhesive connection is adopted, an annular groove is provided on the outer side of the pin rod 12 .

[0060] During installation, the limiting end 11 will be inserted into the connecting sleeve 31 and contact with the base 2, and then the locking nut 32 mounted on the outside of the pin rod 12 will be moved toward the side of the connecting sleeve 31, connecting the connecting sleeve 31 and the locking nut 32, and making the locking nut 32 contact and abut against the limiting end 11. Under the action of the base 2 and the locking nut 32, the limiting end 11 will be clamped, thereby realizing the support of the fixing pin 1 for the base 2.

[0061] In some possible implementations, a contact surface for the limited end portion 11 to contact and cooperate with is provided on the locking nut 32;

[0062] The limiting end portion 11 is partially or entirely located outside the locking nut 32 and is in contact with the contact surface of the locking nut 32 and the base 2 respectively;

[0063] The contact surface is a spherical surface, a conical surface or a plane surface. This configuration can absorb the surface quality degradation caused by the tilt of the fixing pin 1 and reduce the manufacturing accuracy requirements for the bracket 20.

[0064] Specifically, the limiting end portion 11 is a spherical structure and is coaxially arranged with the pin 12, and the radius of the spherical structure is greater than the radius of the through hole 320;

[0065] like Figure 6 As shown, a spherical cap groove is provided at one end of the locking nut 32 away from the turntable 322 for use with the limiting end portion 11, and the contact surface is the inner side surface of the spherical cap groove;

[0066] The spherical cap groove is coaxial with and connected to the through hole 320 , and the depth of the spherical cap groove along the axial direction of the through hole 320 is smaller than the radius of the spherical structure.

[0067] The above-mentioned setting is equivalent to achieving connection by means of a ball hinge connection. The contact and abutment between the spherical structure and the base 2 will form a hinge point, so that the base 2 can rotate around the spherical structure and adjust the position relative to the pin 12, thereby achieving the adjustment of the inclination angle of the normal direction of the reflecting surface relative to the axis direction of the pin 12; specifically, when the pin 12 is connected to the threaded hole set on the bracket 20, since the position of the threaded hole is fixed, if the mirror surface of the reflector 10 does not meet the requirements after the threaded hole is connected to the pin 12, the adjustment can be achieved through the cooperation between the reflector 10 and the ball head.

[0068] In some possible implementations, in order to effectively realize the connection between the base 2 and the base 2 through the fixing pin 1;

[0069] like Figure 8 As shown, the limiting end portion 11 is a frustum structure and is coaxially arranged with the pin rod 12;

[0070] The radius of the large end of the frustum structure is greater than the radius of the through hole 320 ; the radius of the small end thereof is greater than or equal to the radius of the pin rod 12 , and the small end is coaxially connected to the pin rod 12 .

[0071] A conical groove is provided at one end of the locking nut 32 away from the turntable 322 and is used in conjunction with the limiting end portion 11, and the contact surface is the inner side surface of the conical groove;

[0072] The tapered groove is coaxial with and connected to the through hole 320 , and the end of the frustum structure away from the pin rod 12 will be on the outside of the tapered groove.

[0073] In other possible implementations, such as Figure 7 As shown, the limiting end 11 is a cylindrical structure and is coaxially arranged with the pin rod 12. The outer diameter of the cylinder is larger than the inner diameter of the through hole 320. The contact surface is a plane and is arranged on the end face of the locking nut 32 away from the turntable 322; the end of the limiting end 11 away from the pin rod 12 contacts and abuts the base 2.

[0074] The limiting end portion 11 of the frustum structure and the cylindrical structure can only realize left and right movement adjustment in the direction of the reflecting surface and height adjustment in the normal direction of the reflecting surface; when the pin rod 12 is bonded to the bracket 20 and the glue is poured, the reflector 10 is moved in the axial and horizontal directions along the pin rod 12 to avoid interference with the bracket 20;

[0075] In some possible implementation manners, in order to effectively connect the connecting sleeve 31 and the base 2, the base 2 is coaxially arranged with the connecting sleeve 31, and the reinforcing ribs 4 for connecting the base 2 and the connecting sleeve 31 are arranged on the base 2.

[0076] Further, the base 2, the connecting sleeve 31 and the reinforcing ribs 4 are integrally formed.

[0077] In some possible implementation manners, a plurality of groups of bosses 21 are arranged on the side of the base 2 away from the connecting sleeve 31.

[0078] Specifically, the bosses 21 are arranged on the base 2 in at least three groups and uniformly, and the bosses 21 are arranged to control the thickness of the used glue when the base 2 is pasted with the mirror 10, so that the surface quality is improved.

[0079] Since the material of the base 2 is much higher than the strength of the silicone glue before solidification, the base 2 is a paste before solidification, and the bosses 21 are arranged to limit the pressure of the base 2 pressed on the mirror 10, so that the thickness of the glue is controlled, and the thickness of the glue (silicone glue) is equal to the thickness of the boss 21; thus, the relative position relationship between the base 2 and the mirror 10 is avoided to be affected due to the inconsistent thickness of the glue (silicone glue), and the inclination between the base 2 and the mirror 10 is avoided due to the arrangement of the bosses 21.

[0080] Compared with the prior art, only the fixed pin 1, the base 2 and the locking part 3 are used to achieve the connection, so that the use of components is greatly reduced, the manufacturing and processing cost is reduced, and the connection is achieved by the matching drilling connection hole in the prior art.

[0081] The position relationship between the fixed pin 1 and the mounting hole or groove on the support 20 is controlled, the gap between the effective fixed pin 1 and the mounting hole or groove is avoided to be insufficient, the interference is avoided, and the assembly force or the inclination of the fixed pin 1 is caused.

[0082] A mirror 10 replacement method of a heliostat mirror 10 pad convenient to replace, according to the above, specifically includes the following steps.

[0083] Step S1: paste the base 2 and the mirror 10, press the base 2, so that all the bosses 21 are in contact with the mirror 10, and the thickness of the adhesive layer formed between the two is kept consistent, so that the inclination of the two is avoided;

[0084] Step S2: insert the limiting end 11 of the fixed pin 1 into the connecting sleeve 31, and make the end of the limiting end 11 away from the pin 12 in contact with the part of the base 2 in the through hole 320.

[0085] Step S3: moving the locking nut 32 along the fixed pin 1 in the axial direction, and connecting the locking nut 32 with the connecting sleeve 31, and the limiting end 11 is in contact with the contact surface on the locking nut 32 and the base 2;

[0086] Step S4: connecting the pin rod 12 with the bracket 20 by screwing or bonding.

[0087] The utility model is not limited to the foregoing specific embodiments. The utility model extends to any new feature disclosed in this specification or any new combination, and any new method or process step disclosed or any new combination.

Claims

1. A heliostat mirror pad plate for easy replacement, characterized in that, The utility model relates to a fixed pin, a base connected with a mirror, a locking piece for fixing one end of the fixed pin on the base, the locking piece comprises a connecting sleeve provided on the base and having an internally threaded hole, and a locking nut sleeved outside the fixed pin and connected with the connecting sleeve.

2. A readily replaceable heliostat mirror pad according to claim 1, wherein, The locking nut comprises a threaded segment with external threads, and a rotary table connected with one end of the threaded segment away from the base, and the threaded segment is internally provided with a through hole for the fixed pin to pass through.

3. A readily replaceable heliostat mirror pad according to claim 2, wherein, The fixed pin comprises a limiting end portion in contact with the base and limiting the fixed pin from separating from the connecting sleeve, and a pin shaft connected with one end of the limiting end portion away from the base.

4. A readily replaceable heliostat mirror pad according to claim 3, wherein, A contact surface in contact with the limiting end portion is arranged on the locking nut; The limiting end portion is partially or entirely located outside the locking nut and in contact with the contact surface of the locking nut and the base respectively; The contact surface is a spherical surface, a conical surface or a flat surface.

5. A readily replaceable heliostat mirror pad according to claim 4, wherein, The limiting end portion is a spherical structure coaxially arranged with the pin shaft, and the radius of the spherical structure is greater than the radius of the through hole; A spherical cap groove matched with the limiting end portion is arranged on one end of the locking nut away from the rotary table, and the contact surface is the inner side surface of the spherical cap groove; The spherical cap groove is coaxial with and communicates with the through hole, and the depth of the spherical cap groove along the axial direction of the through hole is less than the radius of the spherical structure.

6. A readily replaceable heliostat mirror pad according to claim 4, wherein, The limiting end portion is a frustum structure coaxially arranged with the pin shaft; The radius of the large end of the frustum structure is greater than the radius of the through hole; A conical groove matched with the limiting end portion is arranged on one end of the locking nut away from the rotary table, and the contact surface is the inner side surface of the conical groove; The conical groove is coaxial with and communicates with the through hole, and one end of the frustum structure away from the pin shaft will be the outer side of the conical groove.

7. A readily replaceable heliostat mirror pad according to claim 4, wherein, The limiting end portion is a cylindrical structure coaxially arranged with the pin shaft, the outer diameter of the cylindrical structure is greater than the inner diameter of the through hole, the contact surface is a flat surface arranged on the end surface of the locking nut away from the rotary table, and one end of the limiting end portion away from the pin shaft is in contact with the base.

8. A readily replaceable heliostat mirror pad according to claim 2, wherein, The base is coaxially arranged with the connecting sleeve, and a reinforcing rib for connecting the base and the connecting sleeve is arranged on the base.

9. A readily replaceable heliostat mirror pad according to claim 1, wherein, A plurality of groups of bosses are arranged on one side of the base away from the connecting sleeve.

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