A photothermal backplane flatness detection device and detection method

Abstract

The present invention discloses a photothermal backplane flatness detection device and a detection method thereof, belonging to the technical field of measuring equipment. The photothermal backplane flatness detection device comprises a photothermal backplane, a substrate and a frame, wherein the frame comprises a rectangular ring frame, and the ring frame is provided with two ribs at the three-division of the long side extending to the left and right, a connecting seat is installed in the middle of the ribs, and a horizontally extending support plate is installed in the middle of each of the two ribs. The present invention provides a frame with high structural strength for the photothermal backplane through the design of the photothermal backplane, a bearing seat, a flatness detection module and a tension frame, and before installing the substrate and photovoltaic panels, the flatness detection module uses the support plate of the frame as a reference point to perform a flatness detection on the frame, and uses the tension frame to apply a force opposite to the bending direction to the bending position of the frame for immediate flatness.

Description

Technical Field

[0001] The present invention belongs to the technical field of measuring equipment, and in particular relates to a photothermal backplane flatness detection device and a detection method thereof. Background Art

[0002] The solar thermal backplane is a component of the photovoltaic module and is installed on the outermost layer of the photovoltaic cell. It uses the substrate and frame to provide protection for the internal photovoltaic cells and circuits. Specifically in the production of photovoltaic modules, the surface flatness of the photovoltaic module is a relatively important parameter and needs to meet a certain range to avoid affecting product quality.

[0003] The existing Chinese invention patent with publication number CN115962738A discloses that by setting sponge wheels, receivers, laser transmitters, controllers and alarms, when the photovoltaic module is being transported, the front and back sides of the photovoltaic module will contact the outer surfaces of the two sponge wheels respectively. When the outer surface of the photovoltaic module is curved, the outer surface of the photovoltaic module will squeeze and push the sponge wheels, thereby detecting the flatness of the photovoltaic panel. In actual production, the flatness of the photovoltaic module is mainly affected by the photothermal backplane, and the flatness is detected after the glue is cast. Due to the hard and fragile characteristics of the photovoltaic module itself, it is difficult to repair the flatness. Even if the flatness is detected to be unqualified, it cannot be remedied, resulting in an increase in the qualified rate of the finished product at a low cost. In view of this, a photothermal backplane flatness detection device and a detection method are provided. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a photothermal backplane flatness detection device and a detection method thereof.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] A photothermal backplane flatness detection device, comprising:

[0007] The solar thermal backplane includes a substrate and a frame. The frame includes a rectangular ring frame. The ring frame is provided with two ribs at the three equal parts of the long sides extending left and right. A connecting seat is installed in the middle of the ribs. A horizontally extending support plate 1 is installed in the middle of each of the two ribs. A horizontally arranged support plate 2 is installed at the connection between the ring frame and the end of the rib. The ring frame is respectively provided with a horizontally arranged support plate 3 at the corner and the two equal parts of the short sides extending front and back.

[0008] The bearing seat includes a bottom block, a long guide rod is installed on the top surface of the bottom block, the connecting seat is overlapped on the top of the bottom block, the connecting seat is provided with a socket corresponding to the long guide rod, and the long guide rod is provided with a compression nut above the connecting seat;

[0009] A flatness detection module, the flatness detection module comprising a distance sensor 1 respectively corresponding to the top surface of the two first support plates, a distance sensor 2 respectively corresponding to the top surface of the four second support plates, and a distance sensor 3 respectively corresponding to the top surface of the six third support plates;

[0010] The tension frame is located at the corner of the ring frame. The tension frame includes a group frame and a hanger. The protrusion at the upper end of the hanger is at the same height as the horizontal center line of the ring frame. The hanger connection joint assembly can be horizontally moved and clamped in the middle groove of the ring frame. A power assembly is fixedly installed at the lower end of the hanger. A pressure sensing module is installed between the end of the power assembly and the group frame. The power assembly drives the hanger to slide vertically along the group frame.

[0011] Furthermore, it includes a circulation pipe group and a power component, the power component includes a sleeve and a slide rod, the hanger is fixedly connected to the sleeve, a piston is installed in the middle of the slide rod, the slide rod is fixedly connected to the group frame, the piston separates the sleeve into hydraulic chamber one and hydraulic chamber two, the circulation pipe group includes a pump, the outlet end of the pump is installed with an output pipe, the inlet end of the pump is installed with a return pipe, the output pipe is connected to the lower output branch and the upper output branch through the reversing valve one, the return pipe is connected to the lower return branch and the upper return branch through the reversing valve two, the lower output branch and the lower return branch are connected to the bottom of the hydraulic chamber two, and the upper output branch and the upper return branch are connected to the top of the hydraulic chamber one.

[0012] Through the above technical solution, the auxiliary power component is used to drive the tension frame to slide up and down. When the bracket needs to move upward, the pumping device works, the reversing valve 1 connects the output pipe with the upper output branch pipe, and the reversing valve 2 connects the return pipe with the lower return branch pipe, and the oil in the hydraulic chamber 2 is pumped out and pumped into the hydraulic chamber 1, so that the casing can be pushed up by oil pressure. The pumping device can use a simple one-way pump with simple maintenance and low use cost.

[0013] Furthermore, the piston is axially provided with a connecting hole connecting hydraulic chamber one and hydraulic chamber two. There are two connecting holes and conical rod one and conical rod two are slidably installed respectively. Conical rod one adopts a shape that is thick at the top and narrow at the bottom, and conical rod two adopts a shape that is narrow at the top and thick at the bottom. The two connecting holes are respectively adapted to the shapes of conical rod one and conical rod two. An elastic part is installed between the large diameter end of conical rod one and conical rod two and the inner wall of the connecting hole, and the small diameter end of conical rod one and conical rod two protrudes a distance from the end face of the piston.

[0014] Through the above technical solution, in order to achieve rapid leveling of the ring frame, when the corners of the ring frame are tilted upward, the power assembly at the corresponding position applies downward pressure to the ring frame. When the casing descends and approaches the bottom dead point, the second cone rod is squeezed downward to open the connecting hole, and the oil inside the second hydraulic chamber flows back into the first hydraulic chamber to make the casing ascend until the second cone rod is separated from the inner wall of the top of the casing to block the connecting hole again. The casing that has ascended a certain distance will immediately stop ascending and resume descending. In the process of changing the direction of the casing, due to the existence of inertia, the casing will impact the ring frame, eliminate the internal stress of the ring frame, and quickly repair the flatness of the ring frame.

[0015] Furthermore, it includes a coupling assembly, which includes a horizontal rod and a rocker plate. A frustum portion is provided in the middle of the horizontal rod, and a pressure block is installed on the rocker plate opposite the frustum portion. The rocker plate drives the pressure block to press down the frustum portion to push the horizontal rod to translate. When the horizontal rod translates, it can drive the hanger to be clamped in the middle groove.

[0016] Through the above technical solution, in order to realize the horizontal sliding drive of the hanger, the tension frame has a bottom frame, the bottom frame and the horizontal rod are in the same straight line, the frustum part is narrowed near one end of the ring frame, and when the pressure block is pressed down, the horizontal rod is pushed away from the ring frame by squeezing the frustum part. The assembly frame is directly connected to the horizontal rod, and the assembly frame is driven by the horizontal rod to slide to complete the clamping of the hanger and the ring frame.

[0017] Furthermore, the coupling assembly includes a guide seat 1 and a guide seat 2, the guide seat 1 is hingedly assembled with the swing plate, the swing plate is installed with a downward-opening clamping plate at a position opposite to the guide seat 2, the guide seat 2 is provided with a cylindrical part that cooperates with the clamping plate, and a handle is fixedly installed on the top surface of the end of the swing plate away from the guide seat 1.

[0018] Through the above technical solution, in order to ensure that the hanger and the ring frame are stably connected during the test, a clamping plate is installed on the free end of the swing plate, and a cylindrical part protruding in the horizontal direction is provided on the upper part of the guide seat 2. The clamping plate can be pressed down to clamp on the outside of the cylindrical part, and the pressure block is stationary in the position of pressing the frustum part, ensuring that the hanger can only slide up and down but not slide horizontally to cause it to fall off.

[0019] Furthermore, the pumping device adopts a one-way piston pumping device, which is installed at the end of the swing plate close to the guide seat. The swing plate is hingedly installed with a pressure rod above the pumping device, and the pressure rod is hingedly assembled with the pumping device.

[0020] Through the above technical solution, in order to achieve stable pumping of oil, a mechanical pumping device can be used. One end of the pressure rod rotates to connect the swing plate, driving the plunger in the vertically installed pumping device to slide back and forth, completing manual one-way pumping.

[0021] Furthermore, a mounting cavity for arranging a power component is provided in the middle of the assembly frame, a scale is provided on the vertical side wall of the bracket, and an indicator mark is provided on the side of the assembly frame corresponding to the scale.

[0022] Through the above technical solution, in order to prevent the detection accuracy from being affected by damage to the electronic equipment of the flatness detection module, when the bracket is clamped at the corner position of the ring frame, the bracket will have an initial position. This initial position can be indicated by an indicator mark and a scale. After the protrusion is clamped into the middle groove, if the bracket slides up and down, the sliding distance of the bracket is the initial flatness deviation value of the corner position.

[0023] Furthermore, the supporting seat includes an intermediate plate and a top plate, which are respectively fixed to the top and bottom ends of the connecting seat. A screw is fixedly installed on the top surface of the intermediate plate, and the screw passes through the connecting seat and the top plate and is screwed with a self-locking nut above the top plate.

[0024] Through the above technical solution, in order to facilitate the lifting of the frame of the solar thermal backplane, an intermediate plate is installed at the bottom of the connecting seat and connected to the top plate above by screws passing through the connecting seat. The top plate is used to connect to the steel cable of the lifting equipment. The lifting position and the force-bearing position are not directly set on the frame.

[0025] Furthermore, a short guide rod is installed at the bottom of the middle plate, a vertical hole is opened on the top surface of the bottom block to cooperate with the short guide rod, a stop is provided on the top plate corresponding to the screw position, the stop is inserted through the screw, the upper protrusion of the stop is in sliding contact with the vertical side wall of the connecting seat, and a lifting rod is provided on the top of the stop.

[0026] Through the above technical solution, in order to improve the frame hoisting accuracy of the solar thermal backplane, when the middle plate is lowered, the short guide rod will be inserted into the vertical hole, and can be directly lowered to the top of the bottom block to complete the centered horizontal overhead installation. During hoisting, the lifting rod is tilted and extended to provide sufficient operating space for steel cable bundling. The support seat on the opposite side of the lifting rod will press the vertical side wall of the connecting seat.

[0027] A method for detecting the flatness of a photothermal backplane comprises the following steps:

[0028] When placing the CSP backplane frame, install the middle plate at the bottom of the connecting base. The middle plate is then installed on the top of the connecting base via screws. The lifting rod of the top plate is connected to the lifting cable. The frame is lifted by the lifting equipment and placed horizontally and centered on the top of the bottom block under the guidance of the long and short guide rods.

[0029] When testing the static flatness of the frame, two distance sensors (one) are respectively irradiated at the center of the top surface of support plate one and the distance is consistent. At the same time, distance sensor two is at the same distance from the top surface of four support plates two, and distance sensor three is at the same distance from the top surface of six support plates three. In the static state, the flatness of the solar thermal backplane is calculated by collecting the height data of the ring frame corners, the point where the long side of the ring frame is divided into three equal parts, the midpoint of the short side of the ring frame, and the midpoint of the rib plate.

[0030] When testing the dynamic flatness of the frame, the pressure block squeezes the frustum to make the horizontal rod slide away from the center of the corner of the ring frame, thereby driving the hanger to fit into the middle groove of the ring frame. During the torsion test, the pumper pumps out the oil in the hydraulic chamber one through the upper return branch pipe and the return pipe, and delivers it to the hydraulic chamber two through the output pipe and the lower output branch pipe, so that the casing drives the hanger to move downward to apply downward pressure on the corner of the ring frame. Similarly, the pumper pumps out the oil in the hydraulic chamber two through the lower return branch pipe and the return pipe, and delivers it to the hydraulic chamber one through the output pipe and the upper output branch pipe, so that the casing drives the hanger to move upward to apply upward pressure on the corner of the ring frame, and the size of the applied pressure is detected by the pressure sensing module.

[0031] After the frame torsion test, the static flatness deviation of the frame is repaired. The tension frame applies pressure in the opposite direction of the frame deviation. When the sleeve reaches the limit position, the first or second cone rod will contact the sleeve and slide under pressure, so that the blocked connecting hole is conductive, and the sleeve is depressurized and reset until the first or second cone rod blocks the connecting hole again. The frame is shaken back and forth to eliminate stress and quickly complete the flatness repair.

[0032] The beneficial effects of the present invention are as follows:

[0033] The present invention provides a high-strength frame for the solar thermal backplane through the design of the solar thermal backplane, the supporting base, the flatness detection module, and the tension frame. Before installing the substrate and photovoltaic cells, the flatness detection module uses the frame support plate as a reference point to detect the flatness of the frame. The tension frame is used to apply a force opposite to the bending direction to the bending position of the frame for immediate flatness.

[0034] The present invention uses the design of a circulation pipe group and a power component. When bending and leveling the frame, the circulation pipe group is used to control the flow direction of the oil, so that the sleeve of the power component drives the hanger to move in the opposite direction of the frame bending, thereby leveling the frame. The conical rod is used to intermittently open the connecting hole at the extreme position of the sleeve, so that the sleeve can quickly change direction and slide back and forth within a smaller range, thereby eliminating the internal stress of the ring frame and reducing the rebound of the ring frame after leveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention;

[0036] Figure 2 is a schematic top view of the present invention;

[0037] Figure 3 It is a front view of the present invention;

[0038] Figure 4 This is a schematic diagram of the splitting of the support base and the middle part of the solar thermal backplane of the present invention;

[0039] Figure 5 This is a schematic diagram of the assembly of the support base and the middle part of the solar thermal backplane of the present invention;

[0040] Figure 6 This is a schematic diagram of the state between the tension frame, circulation pipe group and power assembly of the present invention Figure 1 ;

[0041] Figure 7 This is a schematic diagram of the state between the tension frame, circulation pipe group and power assembly of the present invention Figure 2 ;

[0042] Figure 8 It is a cross-sectional schematic diagram of the tension frame, circulation pipe group and power assembly of the present invention;

[0043] Figure 9 It is a schematic diagram of the structure between the circulation pipe group and the power assembly of the present invention;

[0044] Figure 10 It is a schematic cross-sectional view between the circulation pipe group and the power assembly of the present invention;

[0045] Figure 11 It is a schematic diagram of the state in which the power assembly of the present invention runs to the top dead center and the bottom dead center;

[0046] Figure 12 yes Figure 11 Schematic diagram of the structure at point a.

[0047] Figure numerals: 1, bed frame; 2, bearing seat; 21, bottom block; 22, middle plate; 23, top plate; 24, screw; 25, long guide rod; 26, short guide rod; 27, lifting rod; 28, stop seat; 3, photothermal back plate; 31, ring frame; 32, rib plate; 33, connecting seat; 34, support plate 1; 35, support plate 2; 36, support plate 3; 37, middle groove; 4, flatness detection module; 41, distance sensor 1; 42, distance sensor 2; 43, distance sensor 3; 5, joint assembly; 51, guide seat 1; 52, guide seat 2; 53, horizontal rod; 54, swing plate; 55, clamping plate; 56, handle; 57. Cone part; 58. Pressure block; 6. Circulation pipe group; 61. Pumping device; 62. Output pipe; 63. Return pipe; 64. Reversing valve 1; 65. Reversing valve 2; 66. Lower output branch; 67. Upper output branch; 68. Lower return branch; 69. Upper return branch; 7. Power assembly; 71. Casing; 72. Sliding rod; 73. Piston; 74. Hydraulic chamber 1; 75. Hydraulic chamber 2; 76. Cone rod 1; 77. Cone rod 2; 78. Connecting hole; 79. Elastic part; 8. Tension frame; 81. Bottom frame; 82. Assembly frame; 83. Mounting cavity; 84. Hanging bracket; 85. Scale; 9. Pressure sensor module. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] like Figures 1-12 As shown, this embodiment provides a device for detecting the flatness of a photothermal backplane. The photothermal backplane 3 is an important component of a photovoltaic module. Its main function is to be located at the outermost layer of the module, directly in contact with the external environment, to protect the internal cells, EVA film and other materials, and to be fixed to the photovoltaic bracket. The photothermal backplane 3 is composed of a substrate and a frame. Figure 1 and Figure 2 , a glass plate or other opaque plate is embedded in the frame as a substrate, and the battery cells, EVA film and other materials are arranged on the upper surface of the substrate and then encapsulated with glue to form an integral photovoltaic panel;

[0050] However, the glass substrate has high requirements for the flatness of the frame. If the flatness of the ring frame 31 is not enough, the substrate will be twisted after installation, affecting the flatness of the entire photovoltaic panel, and may even cause the substrate to be twisted excessively and cause stress damage. Therefore, in order to ensure the flatness of the photothermal backboard 3, it is necessary to perform a flatness test on the frame of the photothermal backboard 3 before manufacturing the photothermal backboard 3. When the flatness of the frame meets the requirements, the substrate and the photovoltaic sheet can be assembled to ensure the flatness of the finished product. If the photovoltaic sheet is glued and fixed before the whole is assembled, the flatness of the finished product can be guaranteed. When flatness detection is performed, it is very difficult to correct flatness defects, which leads to a decrease in yield and an increase in cost. Therefore, a specific frame is designed, which includes a hollow ring frame 31. The corners of the rectangular ring frame 31 are set to be rounded to increase the structural strength of the corners. The ring frame 31 is provided with two ribs 32 at the three equal parts of the long sides extending to the left and right. The ribs 32 have the effect of reinforcing the middle section of the ring frame 31. In addition, they can provide a mounting position for the connecting seat 33, which is used to connect the solar thermal backplane 3 to the photovoltaic bracket;

[0051] At the same time, refer to Figure 2 and Figure 3 , a horizontally extending support plate 1 34 is installed in the middle of each of the two ribs 32, a horizontally arranged support plate 2 35 is installed at the connection between the ring frame 31 and the end of the rib 32, and a horizontally arranged support plate 3 36 is installed at the short side corners and bisection points extending front and rear of the ring frame 31. These support plates (support plate 1 34, support plate 2 35 and support plate 3 36) are arranged at the corners of the ring frame 31, the trisection points of the long sides of the ring frame 31, the midpoints of the short sides of the ring frame 31 and the midpoints of the ribs 32. They are evenly distributed and have the same height as the ring frame 31 at that location, which is convenient for drilling holes to install photovoltaic panels in the later stage and can also be used as reference points for flatness detection;

[0052] Regarding the support seat 2, refer to Figure 3 and Figure 4 The bearing seat 2 includes a bottom block 21, which is fixed to the top surface of the bed frame 1, wherein a long guide rod 25 is installed on the top surface of the bottom block 21, and two long guide rods 25 are provided and vertically arranged. The connecting seat 33 is overlapped on the top of the bottom block 21, so that the ring frame 31 can be horizontally erected on the top surface of the bed frame 1 for subsequent flatness detection. At the same time, the connecting seat 33 is provided with a socket corresponding to the long guide rod 25 for vertical guidance, and the long guide rod 25 is provided with a tightening nut above the connecting seat 33, which can firmly install the ring frame 31 on the bed frame 1, so that the ring frame 31 will not be displaced during the subsequent detection process, resulting in a decrease in test accuracy.

[0053] Regarding the flatness detection module 4, refer to Figure 1 、 Figure 2 and Figure 3The flatness detection module 4 includes a distance sensor 1 41, which is respectively at the same distance from the top surface of the two support plates 1 34, a distance sensor 2 42, which is respectively at the same distance from the top surface of the four support plates 2 35, and a distance sensor 3 43, which is respectively at the same distance from the top surface of the six support plates 36. The distance sensor 1 41, the distance sensor 2 42, and the distance sensor 3 43 are laser rangefinders or infrared distance sensors, which can be installed at the same horizontal height. With the top surface centers of these support plates (support plate 1 34, support plate 2 35, and support plate 3 36) as base points, the height data of the corners of the ring frame 31, the points dividing the long side into three equal parts, the midpoints of the short sides, and the midpoints of the ribs 32 are collected, so that the flatness data of the ring frame 31 can be quickly determined.

[0054] For tension frame 8, refer to Figure 2 and Figure 6 When the flatness of the ring frame 31 does not meet the specified range, the tension frame 8 is located at the corner position of the ring frame 31, and the tension frame 8 includes a group frame 82 and a hanger 84. At the same time, the protrusion at the upper end of the hanger 84 is at the same height as the horizontal center line of the ring frame 31. The hanger 84 connection joint assembly 5 can be horizontally moved and clamped in the middle groove 37 of the ring frame 31, so that the hanger 84 and the corner position of the ring frame 31 can be connected. Afterwards, the power assembly 7 is fixedly installed at the lower end of the hanger 84. When the power assembly 7 is started, the power assembly 7 drives the hanger 84 to slide vertically along the group frame 82, so that the ring frame 31 can be repaired by applying a force in the opposite direction of the bending to the ring frame 31. For example, if the left side of the ring frame 31 sinks, the two tension frames 8 on the left can be used to push the left side of the ring frame 31 upward and bend it. Because the ring frame 31 is made of a bendable and shapeable material such as aluminum alloy, this reverse bending causes the ring frame 31 to deform upward and restore to a flat state. At the same time, a pressure sensing module 9 is installed between the end of the power component 7 and the assembly frame 82. The bending force reference value required for different bending amplitudes can be preset. When the bending force detected by the pressure sensing module 9 reaches the repair force required for the degree of bending sinking, the upward push can be stopped. By accumulating data during use and experiments, the ring frames 31 in different states can be repaired faster and more accurately.

[0055] The working principle of this embodiment is as follows:

[0056] Lift the frame of the solar thermal backplane 3, overlap the connecting seat 33 on the top of the bottom block 21, guide it downward, and then tighten it with the compression nut to horizontally erect the ring frame 31 on the top surface of the bed frame 1;

[0057] Adjust distance sensor 1 41, distance sensor 2 42, and distance sensor 3 43 to the height where the horizontal centerline of the ring frame 31 should be located. Align the probes of the two distance sensor 1s 41 with the center of the top surface of the two support plates 34, the probes of the four distance sensor 2s 42 with the center of the top surface of the four support plates 2s 35, and the probes of the six distance sensor 3s 43 with the center of the top surface of the six support plates 36. Collect height data of the corners of the ring frame 31, the points dividing the long side into three equal parts, the midpoints of the short sides, and the midpoints of the ribs 32. Compare this data with the height where the horizontal centerline should be located to obtain flatness data.

[0058] For the sunken position of the ring frame 31, the hanger 84 is clamped at the corner of the sunken position of the ring frame 31, and the power component 7 pushes the ring frame 31 upward through the hanger 84 to bend the ring frame 31 into shape. After shaping, the height data of the ring frame 31 at this position is continued to be detected until the ring frame 31 meets the flatness requirements.

[0059] In a further embodiment, the auxiliary power assembly 7 drives the tension frame 8 up and down, referring to Figure 6 , design the circulation pipe group 6 and the power assembly 7, wherein, refer to Figure 9 and Figure 10 The power assembly 7 includes a sleeve 71 and a slide rod 72. A piston 73 is installed in the middle of the slide rod 72. The piston 73 divides the sleeve 71 into a hydraulic chamber 1 74 and a hydraulic chamber 2 75. Figure 8 , the lower end of the hanger 84 is fixedly connected to the outer circumferential wall of the sleeve 71, and the slide rod 72 is fixedly connected to the assembly frame 82;

[0060] The circulation pipe group 6 includes a pump 61, an output pipe 62 is installed at the outlet end of the pump 61, and a return pipe 63 is installed at the inlet end of the pump 61. The pump 61 can push the oil to flow between the output pipe 62, the return pipe 63, the hydraulic chamber 1 74 and the hydraulic chamber 2 75. For details, refer to Figure 8 、 Figure 9 and Figure 10 The output pipe 62 is connected to the lower output branch pipe 66 and the upper output branch pipe 67 through the reversing valve 1 64. The return pipe 63 is connected to the lower return branch pipe 68 and the upper return branch pipe 69 through the reversing valve 2 65. The lower output branch pipe 66 and the lower return branch pipe 68 are connected to the bottom of the hydraulic chamber 2 75, and the upper output branch pipe 67 and the upper return branch pipe 69 are connected to the top of the hydraulic chamber 1 74.

[0061] Among them, reference Figure 11When the hanger 84 needs to move upward, the pumping device 61 works, the reversing valve 1 64 connects the output pipe 62 with the upper output branch pipe 67, and the reversing valve 2 65 connects the return pipe 63 with the lower return branch pipe 68, and the oil in the hydraulic chamber 2 75 is pumped out and pumped into the hydraulic chamber 1 74, so that the casing 71 can be pushed upward by oil pressure. Similarly, when the hanger 84 needs to move downward, the reversing valve 1 64 connects the output pipe 62 with the lower output branch pipe 66, and the reversing valve 2 65 connects the return pipe 63 with the upper return branch pipe 69, and the oil in the hydraulic chamber 1 74 is pumped out and pumped into the hydraulic chamber 2 75, so that the casing 71 can be pressed downward by oil pressure. The pumping device 61 can use a one-way pump with a simple structure, which is easy to maintain and has low use cost.

[0062] In a further embodiment, in order to achieve rapid flattening of the ring frame 31, when the ring frame 31 is bent to a large extent, refer to Figure 11 and Figure 12 The piston 73 is provided with a connecting hole 78 connecting the hydraulic chamber 1 and the hydraulic chamber 2 75 along the axial direction. The connecting hole 78 is provided with two tapered rods 1 and 2 and slidably mounted thereon. The tapered rod 1 76 is shaped as thick at the top and narrow at the bottom, and the tapered rod 2 is shaped as narrow at the top and thick at the bottom. The two connecting holes 78 are adapted to the shapes of the tapered rods 1 and 2, that is, the inner diameter of the connecting hole 78 corresponding to the tapered rod 1 76 is also thick at the top and narrow at the bottom, and the inner diameter of the connecting hole 78 corresponding to the tapered rod 2 77 is also narrow at the top and thick at the bottom. An elastic member 79 is installed between the large diameter end of the tapered rod 1 and the tapered rod 2 77 and the inner wall of the connecting hole 78. The small diameter end of the tapered rod 1 and the tapered rod 2 77 protrudes a distance from the end face of the piston 73. The elastic member 79 can be a straight spring to provide pre-tightening pressure to ensure that the connecting hole 78 is in a blocked state before the tapered rods 1 and 2 77 squeeze the inner wall of the sleeve 71.

[0063] When using, refer to Figure 9 and Figure 11On the right half, when the corner of the ring frame 31 is tilted upward, the power assembly 7 at the corresponding position applies downward pressure to the ring frame 31, and the hydraulic chamber 2 75 flows with oil to press the sleeve 71 together with the hanger 84 downward, so that the ring frame 31 can be corrected by pressing it downward, and when the sleeve 71 moves downward and approaches the bottom dead center, the cone rod 2 77 is squeezed downward to open the connecting hole 78, and the hydraulic chamber 1 74 and the hydraulic chamber 2 75 are connected. The oil in the hydraulic chamber 2 75 flows back into the hydraulic chamber 1 74 to make the sleeve 71 move upward until the cone rod 2 77 is separated from the top of the sleeve 71 The inner wall blocks the communicating hole 78 again. As the oil is continuously input into the hydraulic chamber 2 75, the sleeve 71 that has moved up a certain distance will immediately stop moving up and resume moving down. In the process of the sleeve 71 changing its direction, due to the existence of inertia, the sleeve 71 will generate intermittent impact force on the ring frame 31. With the continuous downward force, the ring frame 31 with a large bending amplitude can be quickly flattened, and the internal stress of the ring frame 31 can be eliminated, the rebound of the ring frame 31 after plastic surgery can be reduced, and the flatness of the ring frame 31 can be quickly restored. Similarly, refer to Figure 9 and Figure 11 In the left half, when the corners of the ring frame 31 collapse, the power assembly 7 at the corresponding position applies an upward force to the ring frame 31, thereby completing the reverse repair of the ring frame 31.

[0064] In a further embodiment, a specific configuration is provided to achieve horizontal sliding drive of the rack 84, referring to Figure 7 , including a coupling assembly 5, the coupling assembly 5 includes a horizontal rod 53 and a swing plate 54, a frustum portion 57 is provided in the middle of the horizontal rod 53, and a pressure block 58 is installed on the swing plate 54 opposite to the frustum portion 57. The frustum portion 57 is narrower at one end close to the ring frame 31 and wider at one end away from the ring frame 31. When the pressure block 58 is pressed down, the horizontal rod 53 can be pushed away from the ring frame 31 by squeezing the circumferential inclined surface of the frustum portion 57. The assembly frame 82 is directly connected to the horizontal rod 53. Therefore, the swing plate 54 drives the pressure block 58 to press the frustum portion 57 downward to push the horizontal rod 53 to move horizontally. When the horizontal rod 53 moves horizontally, it can drive the hanger 84 to be clamped in the middle groove 37. Among them, the tension frame 8 has a bottom frame 81, and the bottom frame 81 is in the same straight line as the horizontal rod 53. A dovetail head is provided at the lower part of the assembly frame 82, and the dovetail head can slide in the bottom frame 81. Figure 2 The extension line of the horizontal rod 53 passes through the center of the rounded corner of the ring frame 31, ensuring that the assembly frame 82 will slide along the radius of the rounded corner of the ring frame 31, and the lower part of the hanger 84 is slidably installed in the installation cavity 83 in the middle of the assembly frame 82. The assembly frame 82 is driven by the horizontal rod 53 to slide, so that the hanger 84 can be synchronously slid into the middle groove 37 to complete the clamping of the hanger 84 and the ring frame 31. On the contrary, when the ring frame 31 needs to be released, the upper pressure block 58 is separated from the frustum 57, so that the hanger 84 can slide freely and quickly complete the unlocking.

[0065] In a further embodiment, in order to ensure that the hanger 84 and the ring frame 31 are stably connected during the test, refer to Figure 6 、 Figure 7 and Figure 8 The cam 55 is pressed against the top of the guide frame 51 and the cam 56 is pressed against the top of the guide frame 51 so that the cam 56 can move freely.

[0066] In a further embodiment, a specific configuration is provided to achieve the pumping of the oil, referring to Figure 6 、 Figure 7 and Figure 8 The pumper 61 adopts a mechanical one-way piston pumper. The pumper 61 is installed at the end of the swing plate 54 near the guide seat 51. The swing plate 54 is located above the pumper 61 and is hingedly installed with a pressure rod. The pressure rod is hingedly assembled with the pumper 61. One end of the pressure rod is rotated to connect to the swing plate 54. The free end of the pressure rod is manually pushed and pulled up and down, driving the plunger in the vertically installed pumper 61 to slide back and forth, and continuously transporting the oil in the return pipe 63 to the output pipe 62 to complete manual one-way pumping.

[0067] In a further embodiment, in order to prevent the flatness detection module 4 electronic device from being damaged and causing the detection accuracy to decrease, refer to Figure 6 、 Figure 7 and Figure 9 , an installation cavity 83 for arranging the power component 7 is provided in the middle of the assembly frame 82, and a scale 85 is opened on the vertical side wall of the bracket 84. An indicator mark is provided on the side of the assembly frame 82 corresponding to the scale 85. When the bracket 84 is clamped at the corner position of the ring frame 31, the bracket 84 will have an initial position. This initial position can be indicated by the indicator mark and the scale 85. The sampling can be observed by the human eye or mechanically photographed. Because the protrusion at the upper end of the bracket 84 is at the same height as the horizontal center line of the ring frame 31, if the bracket 84 slides up and down after the protrusion is clamped into the middle groove 37, the sliding distance of the bracket 84 is the initial flatness deviation value of the corner position. The redundant design of this test structure can be used as the reference data of the flatness detection module 4 to increase fault tolerance.

[0068] In a further embodiment, in order to facilitate the hoisting of the solar thermal backplane 3, refer to Figure 5 The support base 2 includes an intermediate plate 22 and a top plate 23. The intermediate plate 22 and the top plate 23 are respectively fixed to the top and bottom ends of the connecting seat 33, and the connecting seat 33 is clamped therebetween. The top surface of the intermediate plate 22 is fixedly installed with a screw 24. The screw 24 passes through the connecting seat 33 and the top plate 23 and is screwed and installed with a self-locking nut above the top plate 23, so that the connecting seat 33, the intermediate plate 22 and the top plate 23 can be connected into a whole. The intermediate plate 22 is installed at the bottom of the connecting seat 33 and is connected to the top plate 23 above by the screw 24. The top plate 23 is used to provide an installation position and be connected to the steel cable of the lifting equipment. The intermediate plate 22 is padded at the bottom of the connecting seat 33 for contacting the ground or the bottom block 21. The lifting position and the force-bearing position are not directly set on the solar thermal backboard 3, which can reduce the wear or scratches on the solar thermal backboard 3 caused by the disassembly and assembly of the steel cable during lifting.

[0069] In a further embodiment, in order to improve the hoisting accuracy of the photothermal backplane 3, refer to Figure 4 and Figure 5 The top of the support 28 is provided with a lifting rod 27, which is provided with a lifting rod 27 on the opposite side of the lifting rod 27. The lifting rod 27 is pressed against the vertical side wall of the connecting seat 33 to offset the torsional force in the horizontal direction when the lifting rod 27 is lifted, thereby ensuring that the force direction of the connecting seat 33 is vertical.

[0070] A method for detecting the flatness of a photothermal backplane comprises the following steps:

[0071] When placing the frame of the solar thermal back panel 3, the middle plate 22 is installed at the bottom end of the connecting seat 33. The middle plate 22 is installed on the top of the connecting seat 33 through the screw 24. The lifting rod 27 of the top plate 23 is connected to the lifting cable. The frame of the solar thermal back panel 3 is lifted by the lifting equipment and placed horizontally and centered on the top of the bottom block 21 under the guidance of the long guide rod 25 and the short guide rod 26.

[0072] When testing the static flatness of the frame of the photothermal backplane 3, the two distance sensors 1 41 are respectively irradiated at the center position of the top surface of the support plate 1 34 and the distance is consistent. At the same time, the distance between the distance sensor 2 42 and the top surface of the four support plates 2 35 is consistent, and the distance between the distance sensor 3 43 and the top surface of the six support plates 3 36 is consistent. In the static state, the flatness of the frame is calculated by collecting the height data of the corners of the ring frame 31, the points dividing the long side of the ring frame 31 into three equal parts, the midpoint of the short side of the ring frame 31, and the midpoint of the rib 32;

[0073] When testing the dynamic flatness of the frame of the solar thermal backplane 3, the pressure block 58 squeezes the frustum 57 to make the horizontal rod 53 slide away from the center of the corner of the ring frame 31, thereby driving the hanger 84 to be stuck in the middle groove 37 of the ring frame 31. During the torsion test, the pump 61 is connected to the upper return branch 69 and the return pipe 63 to extract the oil in the hydraulic chamber 1 74, and transmits it to the hydraulic chamber 2 75 through the output pipe 62 and the lower output branch 66, so that the sleeve 71 drives the hanger 84 to move downward to apply downward pressure on the corner position of the ring frame 31. Similarly, the pump 61 is connected to the lower return branch 68 and the return pipe 63 to extract the oil in the hydraulic chamber 2 75, and transmits it to the hydraulic chamber 1 74 through the output pipe 62 and the upper output branch 67, so that the sleeve 71 drives the hanger 84 to move upward to apply upward pressure on the corner position of the ring frame 31, and the size of the external pressure is detected by the pressure sensor module 9.

[0074] After the torsion test of the frame of the solar thermal backplane 3, the static flatness deviation of the frame is repaired, and the tension frame 8 applies pressure in the opposite direction of the frame deviation. When the sleeve 71 reaches the limit position, the cone rod 1 76 or the cone rod 2 77 will contact the sleeve 71 and slide under pressure, so that the blocked connecting hole 78 is connected, and the sleeve 71 is depressurized and reset until the cone rod 1 76 or the cone rod 2 77 blocks the connecting hole 78 again. The frame is shaken back and forth to eliminate stress and quickly complete the flatness repair.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A device for detecting the flatness of a photothermal backplane, characterized in that: include: The solar thermal backplane comprises a substrate and a frame, wherein the frame comprises a ring frame, wherein the ring frame is provided with two ribs at the thirds of the long side, wherein a connecting seat is installed in the middle of the ribs, wherein a first support plate is installed in the middle of the two ribs, wherein a second support plate is installed at the connection between the ring frame and the end of the ribs, and wherein a third support plate is installed at the corner of the short side and at the second half of the ring frame; The bearing seat includes a bottom block, a long guide rod is installed on the top surface of the bottom block, a socket is provided at the connection seat corresponding to the long guide rod, and a compression nut is provided on the long guide rod above the connection seat; A flatness detection module, the flatness detection module including a distance sensor 1 having a consistent distance from the top surface of the two first support plates, a distance sensor 2 having a consistent distance from the top surface of the four second support plates, and a distance sensor 3 having a consistent distance from the top surface of the six third support plates; A tension frame, comprising a group frame and a hanging frame, wherein the protrusion at the upper end of the hanging frame is at the same height as the horizontal center line of the ring frame; The coupling assembly is connected to the bracket and can be horizontally moved and clamped in the middle groove of the ring frame. The lower end of the bracket is fixedly mounted with a power assembly, which drives the bracket to slide vertically along the assembly frame. The power assembly includes a sleeve and a slide rod, the hanger is fixedly connected to the sleeve, a piston is installed in the middle of the slide rod, the slide rod is fixedly connected to the assembly frame, and the piston divides the sleeve into hydraulic chamber 1 and hydraulic chamber 2; It also includes a circulation pipe group, which includes a pumping device, an output pipe is installed at the outlet end of the pumping device, and a return pipe is installed at the inlet end of the pumping device. The output pipe is connected to a lower output branch pipe and an upper output branch pipe through a reversing valve 1, and the return pipe is connected to a lower return branch pipe and an upper return branch pipe through a reversing valve 2. The lower output branch pipe and the lower return branch pipe are in conduction with the bottom of the second hydraulic chamber, and the upper output branch pipe and the upper return branch pipe are in conduction with the top of the first hydraulic chamber; The piston is axially provided with a connecting hole connecting hydraulic chamber one and hydraulic chamber two. There are two connecting holes, and conical rod one and conical rod two are slidably installed respectively. Conical rod one adopts a shape that is thick at the top and narrow at the bottom, and conical rod two adopts a shape that is narrow at the top and thick at the bottom. The two connecting holes are respectively adapted to the shapes of conical rod one and conical rod two. An elastic part is installed between the large diameter end of the conical rod one and conical rod two and the inner wall of the connecting hole, and the small diameter end of the conical rod one and conical rod two protrudes a distance from the end face of the piston.

2. The optical thermal backplane flatness detection device according to claim 1, characterized in that: The coupling assembly includes a horizontal rod and a rocking plate. A frustum is provided in the middle of the horizontal rod. A pressure block is installed on the rocking plate opposite the frustum. The rocking plate drives the pressure block to press down the frustum to push the horizontal rod to translate. When the horizontal rod translates, it can drive the bracket to be clamped in the middle groove.

3. The optical thermal backplane flatness detection device according to claim 2, characterized in that: The coupling assembly also includes a guide seat 1 and a guide seat 2. The guide seat 1 is hingedly assembled with the swing plate. The swing plate is installed with a downward-opening clamping plate at a position opposite to the guide seat 2. The guide seat 2 is provided with a cylindrical part that cooperates with the clamping plate. A handle is fixedly installed on the top surface of the end of the swing plate away from the guide seat 1.

4. The optical thermal backplane flatness detection device according to claim 3, characterized in that: The pumper adopts a one-way piston pumper, which is installed at the end of the swing plate close to the guide seat. The swing plate is located above the pumper and is hingedly installed with a pressure rod, which is hingedly assembled with the pumper.

5. The optical thermal backplane flatness detection device according to claim 3, characterized in that: The bearing seat includes an intermediate plate and a top plate, which are respectively fixed to the top and bottom ends of the connecting seat. A screw is fixedly installed on the top surface of the intermediate plate. The screw passes through the connecting seat and the top plate and is screwed with a self-locking nut above the top plate.

6. The optical thermal backplane flatness detection device according to claim 1, characterized in that: The bearing seat includes an intermediate plate and a top plate, and the intermediate plate and the top plate are respectively fixed to the top and bottom ends of the connecting seat, and a screw is fixedly installed on the top surface of the intermediate plate, and the screw passes through the connecting seat and the top plate and is screwed and installed with a self-locking nut above the top plate, and a short guide rod is installed at the bottom of the intermediate plate, and a vertical hole that cooperates with the short guide rod is opened on the top surface of the bottom block, and a stop is provided on the top plate corresponding to the screw position, and the stop is inserted into the screw, and the upper protrusion of the stop is in sliding contact with the vertical side wall of the connecting seat, and a lifting rod is provided on the top of the stop.

7. A method for detecting the flatness of a photothermal backplane, based on the device for detecting the flatness of a photothermal backplane according to claim 3, characterized in that: The following steps are involved: Place the frame of the solar thermal backplane, install the middle plate at the bottom of the connecting base, and install the top plate on the top of the connecting base through screws. The lifting rod of the top plate is connected to the lifting cable and is placed horizontally and centered on the top of the bottom block under the guidance of the long and short guide rods; To check the static flatness of the frame, two distance sensors (one) are placed at the center of the top surface of support plate one, ensuring the same distance. Distance sensor two is placed at the same distance from the top surfaces of four support plates two, and distance sensor three is placed at the same distance from the top surfaces of six support plates three. The height data of the ring frame corners, the points dividing the long side of the ring frame into three equal parts, the midpoint of the short side of the ring frame, and the midpoint of the ribs are collected. To inspect the dynamic flatness of the frame, the hanger is inserted into the middle groove of the ring frame. During the torsion test, the pumper draws out the oil in hydraulic chamber one through the upper return branch pipe and the return pipe, and delivers it to hydraulic chamber two through the output pipe and the lower output branch pipe. The casing drives the hanger downward to apply downward pressure on the corners of the ring frame. Similarly, the pumper draws out the oil in hydraulic chamber two through the lower return branch pipe and the return pipe, and delivers it to hydraulic chamber one through the output pipe and the upper output branch pipe. The casing drives the hanger upward to apply upward pressure on the corners of the ring frame. The applied pressure data is detected by the pressure sensing module. To repair the static flatness deviation of the frame, the tension frame applies pressure in the opposite direction of the frame deviation. When the casing reaches the limit position, the first or second cone rod will contact the inner wall of the casing end and slide under pressure, so that the blocked connecting hole is conductive, and the casing is depressurized and reset until the first or second cone rod blocks the connecting hole again. The frame is shaken back and forth to eliminate stress and quickly complete the flatness repair.

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