CN119103729A

CN119103729A - A trough type solar thermal collector assembly

Info

Publication number: CN119103729A
Application number: CN202411340176.1A
Authority: CN
Inventors: 胡建辉; 张伟群
Original assignee: Guangdong Zhongrun Chuangneng Electric Power Technology Co ltd
Current assignee: Guangdong Zhongrun Chuangneng Electric Power Technology Co ltd
Priority date: 2024-09-25
Filing date: 2024-09-25
Publication date: 2024-12-10
Anticipated expiration: 2044-09-25
Also published as: CN119103729B

Abstract

The invention discloses a trough type solar heat collection assembly which comprises a rotary support, a base, a heat absorption pipe and a heat absorption pipe, wherein the rotary support is provided with a collecting lens support frame, a plurality of collecting lenses are arranged on the surface of the collecting lens support frame to form a collecting lens surface, the base is arranged below the rotary support, one of the rotary support and the base is provided with an arc-shaped sliding rail, the other of the rotary support and the base is provided with a sliding block matched with the arc-shaped sliding rail, the base is provided with a driver assembly to drive the rotary support to rotate along the arc-shaped sliding rail, and the heat absorption pipe is arranged above the collecting lens support frame and is arranged on a focusing line of the collecting lens surface and at the same time positioned on the axis of the arc-shaped sliding rail. The light condensing effect can be improved, and the stability, durability and service life of the equipment are improved.

Description

Trough type solar heat collection assembly

Technical Field

The invention relates to the technical field of trough type heat collection equipment, in particular to a trough type solar heat collection assembly.

Background

With the growing global energy demand and the rising environmental awareness, solar energy has received a great deal of attention as a clean, renewable energy source. The trough type solar heat collection system is widely applied in the field of solar heat utilization due to the efficient energy conversion capability and lower cost. The traditional trough type solar heat collection assembly mainly comprises a collecting lens, a driving device, a heat absorption pipe and other key components. The collector mirror is typically composed of a series of mirrors that focus sunlight onto the absorber tube to increase energy collection efficiency.

At present, the trough type solar heat collecting tube is usually follow-up, namely, the heat collecting tube rotates along with the collecting lens so as to always aim at sunlight. However, the sealing performance of the rotary joints at both ends of the follow-up heat collecting pipe is gradually reduced in the long-term rotation process. Because the heat absorbing medium in the heat collecting pipe needs to work at high temperature and high pressure, the reduction of the sealing performance can lead to leakage of the medium, and the performance of the heat collecting component is affected.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the groove type solar heat collection assembly, which can improve the light condensation effect, and improve the stability, the durability and the service life of equipment.

A trough solar collector assembly according to an embodiment of the first aspect of the present invention comprises:

The rotary support is provided with a condensing lens support frame, and a plurality of condensing lenses are arranged on the surface of the condensing lens support frame to form a condensing lens surface;

The base is arranged below the rotary support, one of the rotary support and the base is provided with an arc-shaped sliding rail, the other is provided with a sliding block matched with the arc-shaped sliding rail, and the base is provided with a driver component to drive the rotary support to rotate along the arc-shaped sliding rail;

The heat absorption pipe is arranged above the condenser lens support frame, is arranged on the focusing line of the condenser lens and is positioned on the axis of the arc-shaped sliding rail.

The trough type solar heat collection assembly has the advantages that a plurality of condensing mirrors form a continuous condensing mirror surface, solar rays can be effectively concentrated on the heat absorption tubes through the arrangement, energy collection efficiency is improved, heat energy output of the whole system is improved, and the rotary support is allowed to rotate stably along an arc path due to the fact that the arc sliding rail and the sliding block are matched between the base and the rotary support. The system can automatically adjust the angle to track the position of the sun by combining with the driver component on the base, so that the heat absorption pipe is ensured to be always positioned at the optimal light receiving position, and the solar energy resource is utilized to the maximum extent; the heat absorption pipes are positioned on the axis of the arc-shaped sliding rail, so that the heat absorption pipes can be kept at the optimal heat absorption position even when the bracket rotates, the heat energy conversion efficiency is improved, the heat absorption pipes and the rotating bracket adopt a separated design, the heat absorption pipes are kept fixed when the rotating bracket rotates, therefore, the heat absorption pipes can be connected by adopting hard pipes without adopting hose connection, thereby having better safety and reliability, and can bear larger pressure in the pipes, further obtaining higher heat collection efficiency, the hard pipe connection is more firm and durable, potential leakage points are reduced, the installation process is simplified, the construction and maintenance cost is well reduced, the connection between the branch circuits and the mother circuit of the heat absorption pipes is not required to adopt a rotary joint connection, the system is safer and more reliable, a heat absorption medium can be stored in a heat insulation tank in a non-sunlight period, the requirement that the medium at the time period must circulate is avoided, a large amount of heat energy loss when the heat absorption medium circulates is avoided, thereby improving the heat efficiency of the system, the base is placed under the rotating bracket, the radiation area of the base can be reduced, the service life of the base can be prolonged, and the service life of the base can be prolonged.

According to some embodiments of the invention, the rotating bracket is provided with a plurality of arc-shaped sliding rails along the axial direction of the heat absorbing pipe, and the arc-shaped sliding rails are distributed at intervals. The arc sliding rails are distributed at intervals along the axial direction of the heat absorption pipe, so that more uniform supporting points are provided, and the stress born by the rotary support during rotation is effectively dispersed. The design reduces the load on a single sliding rail and improves the structural stability of the whole system.

According to some embodiments of the invention, the sliding block is provided with a roller, a positioning groove is further formed on the outer side of the arc-shaped sliding rail, the width of the positioning groove is matched with that of the roller, and the roller is in rolling contact with the bottom wall of the positioning groove. The design of the positioning groove ensures that the roller can roll along a preset path accurately, and reduces the deflection of the rotating bracket in the moving process. The design improves the motion precision of the system, so that the heat absorption tube can be always kept at the optimal focusing position, thereby improving the energy collection efficiency.

According to some embodiments of the invention, the arc-shaped sliding rail is provided with a plurality of rollers, the base is provided with a first bracket and a second bracket, and the first bracket and the second bracket are in rolling contact with the rollers. The rolling contact of the first and second brackets with the rollers provides additional support points that disperse the weight of the rotating bracket and the condensing mirror mounted thereon. This not only enhances the structural stability of the overall system, but also increases its load carrying capacity, allowing the system to operate under heavier loads.

According to some embodiments of the invention, the condenser lens support frame is further provided with a support rod, one end of the support rod, which is far away from the condenser lens support frame, is provided with a bearing, and the heat absorption tube is arranged on the bearing in a penetrating manner. The heat absorbing pipe is fixed on the supporting rod through the bearing, so that the optimal focusing position can be kept, and all reflected solar rays are ensured to be concentrated on the heat absorbing pipe. This increases the concentration of heat and the efficiency of heat transfer, thereby increasing the energy harvesting capacity of the system.

According to some embodiments of the invention, the support rods are provided in a plurality, and the support rods are arranged at intervals along the axial direction of the arc-shaped slide rail. The heat absorption pipe and the weight of related parts of the heat absorption pipe are effectively dispersed, the structural stability and rigidity of the whole system are enhanced, and deformation or damage caused by local stress concentration is reduced.

According to some embodiments of the invention, the bearing is one of a special engineering plastic bearing, a ceramic bearing or a stainless steel bearing. Can stably work for a long time under high temperature, high humidity and other severe environments, thereby prolonging the service life of the bearing and reducing the replacement frequency.

According to some embodiments of the invention, a connecting piece is arranged at the top of the condenser lens support frame, the connecting piece extends along the axial direction of the condenser lens support frame, the connecting piece is provided with a plurality of mounting parts, and the support frame is fixed on the connecting piece through the mounting parts. Through a plurality of installation department on the connecting piece, condensing lens support frame can conveniently fix on the connecting piece. The modularized design enables the installation process to be simpler, more convenient and quicker, and reduces the time and complexity of site construction.

According to some embodiments of the invention, the upper part of the collecting lens supporting frame is provided with a slot, the slot is mutually matched with the connecting piece, the connecting piece is installed in the slot, and the top of the connecting piece is mutually flush with the collecting lens supporting frame. The design of the attachment member directly embedded in the slot simplifies the installation procedure. The installer only needs to insert the connecting piece into the slot and fix the connecting piece, complicated alignment and adjustment are not needed, and the installation time is greatly shortened.

According to some embodiments of the invention, the outer side surface of the rotary bracket is provided with a driven gear, the driver assembly comprises a power motor and a driving gear, the driving gear is in transmission connection with the power motor, and the driving gear and the driven gear are in meshed transmission. The mechanical structure of the gear transmission is simple and reliable, and the complexity of a control system is reduced. This not only simplifies the design and manufacturing process of the system, but also reduces maintenance costs and failure rates.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a trough solar collector assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of a condenser lens holder according to an embodiment of the present invention;

FIG. 3 is a schematic view of a swivel mount and base of an embodiment of the invention;

Fig. 4 is a schematic diagram of a trough heat collection system according to an embodiment of the invention.

Reference numerals are a rotating bracket 100, a condenser bracket 110, a base 120, a heat absorbing tube 130, a support bar 140, a condenser 150, a first bracket 160, a second bracket 170, a driver assembly 180, a slot 190, a driven gear 200, a positioning slot 210, and a connector 220.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme. In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 4, a trough type solar collector assembly includes:

the rotary support 100, the rotary support 100 is provided with a condenser lens support frame 110, and a plurality of condenser lenses 150 are arranged on the surface of the condenser lens support frame 110 to form a condenser lens surface;

the base 120 is arranged below the rotary support 100, one of the rotary support 100 and the base 120 is provided with an arc-shaped sliding rail, the other is provided with a sliding block matched with the arc-shaped sliding rail, and the base 120 is provided with a driver component 180 for driving the rotary support 100 to rotate along the arc-shaped sliding rail;

The heat absorbing pipe 130 is arranged above the condenser lens support frame 110, and the heat absorbing pipe 130 is arranged on the focusing line of the condenser lens 150 surface and is positioned on the axis of the arc-shaped sliding rail.

The plurality of condensing lenses 150 form a continuous condensing mirror surface, and the arrangement can effectively concentrate solar rays on the heat absorbing tube 130, thereby improving energy collection efficiency and heat energy output of the whole system, and the design of matching the arc-shaped sliding rail and the sliding block is adopted between the base 120 and the rotating bracket 100, so that the rotating bracket 100 can rotate stably along an arc-shaped path. In combination with the driver assembly 180 on the base 120, the system can automatically adjust the angle to track the position of the sun, ensure that the heat absorbing pipe 130 is always positioned at the optimal light receiving position, thereby maximizing the utilization of solar energy resources, ensure that the heat absorbing pipe 130 is positioned on the axis of the arc-shaped sliding rail, ensure that the heat absorbing pipe 130 can be kept at the optimal heat absorbing position even when the bracket rotates, thereby improving the heat energy conversion efficiency, the heat absorbing pipe 130 and the rotating bracket 100 adopt a separated design, the heat absorbing pipe 130 is kept fixed when the rotating bracket 100 rotates, the heat absorbing pipes 130 can be connected by adopting a hard pipe, a hose connection is not needed, thereby having better safety, bearing larger in-pipe pressure, further obtaining higher heat collecting efficiency, ensuring that the hard pipe connection is firmer and more durable, reducing potential leakage points, simplifying the installation process and reducing the maintenance cost, and the sunlight connection between the branch and the mother path of the pipe 130 is not required to be connected by adopting a rotating joint, the system is safer and more reliable, the base 120 is placed below the rotating bracket 100, the irradiation area of the base can be reduced, thereby the service life of the base 120 can be prolonged, and the service life of the system can be prolonged.

It will be appreciated that as shown in fig. 1, the arc-shaped slide rail is disposed at the bottom of the rotating bracket 100, and the slider is disposed at the top of the base 120, such that when the driver assembly 180 is activated, the arc-shaped slide rail rotates under the limit of the slider. In another embodiment, an arc-shaped sliding rail may also be disposed on the base 120, and the sliding block is correspondingly disposed at the bottom of the rotating bracket 100, and when the rotating bracket 100 rotates along the arc-shaped sliding rail, the sliding block slides in the arc-shaped sliding rail smoothly.

It will be appreciated that the rotating bracket 100 is prefabricated in a reinforced concrete structure, and the condenser lens support frame 110 is also prefabricated in a reinforced concrete structure, so that the stability of the whole structure is improved, the influence of severe environmental conditions is effectively resisted, and the reliability of the device in long-term use and the reduction of maintenance cost are ensured. The design is particularly suitable for application in outdoor environments, can resist natural erosion and prolongs the service life of equipment.

Along the axial direction of the heat absorbing tube 130, the rotating bracket 100 is provided with a plurality of arc-shaped sliding rails, and the plurality of arc-shaped sliding rails are distributed at intervals. The plurality of arc-shaped sliding rails are axially spaced along the heat absorbing tube 130, providing more uniform supporting points, and effectively dispersing the stress born by the rotating bracket 100 during rotation. The design reduces the load on a single sliding rail and improves the structural stability of the whole system. In this embodiment, two arc-shaped sliding rails are disposed below the rotating bracket 100, and the two arc-shaped sliding rails are disposed at two ends of the collecting lens support frame 110 respectively, and the number of the arc-shaped sliding rails can be adaptively changed according to the weight and the size of the collecting lens support frame 110.

Referring to fig. 1 to 3, the slider is provided with a roller, the outer side of the arc-shaped slide rail is further provided with a positioning groove 210, the width of the positioning groove 210 is matched with the roller, and the roller is in rolling contact with the bottom wall of the positioning groove 210. The design of the positioning groove 210 ensures that the roller can precisely roll along a predetermined path, reducing the deflection of the rotating bracket 100 during movement. This design improves the accuracy of the system's motion so that the absorber tube 130 can always remain in an optimal focus position, thereby improving energy harvesting efficiency. It can be appreciated that two positioning slots 210 may be provided, and two positioning slots 210 are respectively provided on two sides of the driven gear 200, so that the design can improve the stability of the roller in the running process, and ensure that the roller can stably run.

The arc-shaped slide rail is provided with a plurality of rollers, the base 120 is provided with a first bracket 160 and a second bracket 170, and the first bracket 160 and the second bracket 170 are in rolling contact with the rollers. The rolling contact of the first and second brackets 160, 170 with the rollers provides additional support points that disperse the weight of the rotating bracket 100 and the collection lens 150 mounted thereon. This not only enhances the structural stability of the overall system, but also increases its load carrying capacity, allowing the system to operate under heavier loads.

The condenser support frame 110 is further provided with a support rod 140, one end of the support rod 140, which is far away from the condenser support frame 110, is provided with a bearing, and the heat absorbing pipe 130 is arranged on the bearing in a penetrating way. The heat absorbing pipe 130 is fixed to the support rod 140 by a bearing, so that an optimal focusing position can be maintained, and it is ensured that all reflected solar rays are concentrated on the heat absorbing pipe 130. This increases the concentration of heat and the efficiency of heat transfer, thereby increasing the energy harvesting capacity of the system. The support rods 140 are provided in plurality, and the support rods 140 are arranged at intervals along the axial direction of the arc-shaped slide rail. Providing a more uniform and wide support point, effectively dispersing the weight of the absorber tube 130 and its associated components, enhancing the structural stability and rigidity of the overall system, and reducing deformation or damage due to localized stress concentrations. In this embodiment, the number of the support rods 140 is four, and the bearings are disposed at the top of the four support rods 140, so that not only the stability of the overall structure is enhanced, but also the pressure from the upper assembly can be more effectively shared. The use of the bearing enables each supporting point to bear load uniformly, reduces potential risks caused by overlarge single-point stress, and accordingly improves reliability and service life of the whole system.

The bearing is one of a special engineering plastic bearing, a ceramic bearing or a stainless steel bearing. Can stably work for a long time under high temperature, high humidity and other severe environments, thereby prolonging the service life of the bearing and reducing the replacement frequency.

The top of condensing lens support frame 110 is provided with connecting piece 220, and connecting piece 220 extends along the axial direction of condensing lens support frame 110 and sets up, and connecting piece 220 is provided with a plurality of installation department, and the support frame passes through the installation department to be fixed at connecting piece 220. The collection lens holder 110 can be conveniently fixed to the connection member 220 by a plurality of mounting portions on the connection member 220. The modularized design enables the installation process to be simpler, more convenient and quicker, and reduces the time and complexity of site construction. It will be appreciated that the connector 220 and the support bracket can be pre-installed at the factory and the connector 220 can be directly installed on the concentrator support bracket 110 after being brought to the assembly site, which not only simplifies the installation process on site, but also significantly reduces the time required for on-site installation. By completing part of assembly work in a factory in advance, the efficiency can be improved, the assembly quality can be better controlled, and all parts can be ensured to reach the standard requirements before reaching the site. Therefore, time is saved, mounting accuracy is guaranteed, and implementation efficiency of the whole project is improved.

The upper portion of the condenser support frame 110 is provided with a slot 190, the slot 190 is mutually matched with a connecting piece 220, the connecting piece 220 is arranged in the slot 190, and the top of the connecting piece 220 is mutually flush with the condenser support frame 110. The design of the attachment member 220 directly embedded in the slot 190 simplifies the installation procedure. The installer simply inserts and secures the connector 220 into the slot 190 without requiring complicated alignment and adjustment, thereby greatly reducing installation time.

The outer side surface of the rotating bracket 100 is provided with a driven gear 200, the driver assembly 180 comprises a power motor and a driving gear, the driving gear is in transmission connection with the power motor, and the driving gear and the driven gear 200 are in meshed transmission. The mechanical structure of the gear transmission is simple and reliable, and the complexity of a control system is reduced. This not only simplifies the design and manufacturing process of the system, but also reduces maintenance costs and failure rates. It will be appreciated that the driver assembly 180 further includes a speed reducer, with the output shaft of the power motor being coupled to the speed reducer, with the output shaft of the speed reducer being in driving engagement with the drive gear, thereby increasing torque. By the action of the speed reducer, the torque can be significantly increased, so that the rotating bracket 100 is smoother and more powerful in rotation. The design of the speed reducer ensures that the power transmission is more efficient, and simultaneously ensures that the whole operation of the system is more reliable and quiet.

It will be appreciated that when the trough solar collector assembly is installed, in a first step, the two bases 120 are respectively fixed on the ground bearing platform foundation bolts prepared in advance, so as to ensure that each foundation is firmly connected to the base 120 and keep stable in the horizontal direction. In the second step, the first bracket 160 and the second bracket 170 are also installed by anchor bolts. Third, the rotating bracket 100 is mounted on the first bracket 160, the second bracket 170 and the base 120, and each component is precisely aligned, ensuring the stability of the entire structure. Fourth, two collection lens holders 110 are mounted on the rotating bracket 100. Fifth, the connector 220 is installed in the slot 190. Sixth, the driver assembly 180 is mounted to the base 120 and the driver assembly 180 is secured in driving connection with the swivel bracket 100. And seventh, installing the four heat absorbing pipes 130 and the bearing together on the supporting rod 140, and connecting adjacent heat absorbing pipes 130 through short pipes and penetrating the bearing. Ninth, the condenser 150 is mounted on the rotating bracket 100.

Referring to fig. 4, fig. 4 illustrates a networking manner of a plurality of trough type solar heat collecting modules, and the heat absorbing pipes 130 of each heat collecting module are connected by independent branches and finally converged on one main path. Each groove type heat collection assembly can work independently, and is convenient to install and maintain. If a certain component fails, the component can be independently replaced without affecting the operation of the whole system. The whole heat collection system can cancel the connection of the rotary joint and greatly reduce the connection of the hose, and the safety and the reliability of the system are improved.

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, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims

1. A trough type solar thermal collector assembly, comprising:

A rotating bracket, wherein the rotating bracket is provided with a condenser support frame, and a plurality of condensers are installed on the surface of the condenser support frame to form a condenser mirror surface;

A base is arranged below the rotating bracket, one of the rotating bracket and the base is provided with an arc-shaped slide rail, the other is provided with a slider matched with the arc-shaped slide rail, and the base is provided with a driver assembly to drive the rotating bracket to rotate along the arc-shaped slide rail;

The heat absorbing tube is arranged above the condenser support frame. The heat absorbing tube is arranged on the focal line of the condenser surface and is located at the axis of the arc-shaped slide rail.

2. A trough type solar thermal collector assembly according to claim 1, characterized in that, along the axial direction of the heat absorption tube, the rotating bracket is provided with a plurality of the arc-shaped slide rails, and the plurality of the arc-shaped slide rails are distributed at intervals.

3. A trough-type solar thermal collector assembly according to claim 2, characterized in that the slider is provided with a roller, and a positioning groove is also provided on the outer side of the arc-shaped slide rail, the width of the positioning groove is mutually adapted to the roller, and the roller is in rolling contact with the bottom wall of the positioning groove.

4. A trough type solar thermal collector assembly according to claim 2, characterized in that the arc-shaped slide rail is provided with a plurality of rollers, the base is provided with a first bracket and a second bracket, and the first bracket and the second bracket are in rolling contact with the rollers.

5. A trough type solar thermal collector assembly according to claim 1, characterized in that the concentrator support frame is also provided with a support rod, and a bearing is provided at one end of the support rod away from the concentrator support frame, and the heat absorption tube is passed through the bearing.

6. A trough type solar thermal collector assembly according to claim 5, characterized in that a plurality of the support rods are provided, and the plurality of the support rods are arranged at intervals along the axial direction of the arc-shaped slide rail.

7. A trough type solar thermal collector assembly according to claim 5, characterized in that the bearing is one of a special engineering plastic bearing, a ceramic bearing or a stainless steel bearing.

8. A trough type solar thermal collector assembly according to claim 5, characterized in that a connecting piece is provided on the top of the concentrator support frame, the connecting piece is extended along the axial direction of the concentrator support frame, the connecting piece is provided with a plurality of mounting parts, and the support frame is fixed to the connecting piece through the mounting parts.

9. A trough type solar thermal collector assembly according to claim 8, characterized in that a slot is provided on the upper portion of the concentrator support frame, the slot and the connecting piece are adapted to each other, the connecting piece is installed in the slot, and the top of the connecting piece is flush with the concentrator support frame.

10. A trough type solar thermal collector assembly according to claim 1, characterized in that a driven gear is provided on the outer side of the rotating bracket, the driver assembly comprises a power motor and a driving gear, the driving gear is transmission-connected to the power motor, and the driving gear and the driven gear are meshed for transmission.