A solar radiation measuring device for a solar water heater

Abstract

The present invention belongs to the field of solar total radiation measurement devices, and particularly relates to a solar radiation measurement device for a solar water heater. It includes a total radiation meter, an angle calibration mechanism, an angle adjustment mechanism, and a base. The total radiation meter is arranged on the base, and the base is connected to the total radiation meter through the angle adjustment mechanism. One side of the total radiation meter is connected to the angle calibration mechanism. When this design is in use, the device is placed beside the solar water heater, and then the reference plate is moved and placed on the heat collecting tube of the solar water heater. The telescopic rod is adjusted until the bottom surface of the reference plate is in full contact with the heat collecting tube. At this time, since the bottom surface of the reference plate is parallel to the horizontal rod, that is, the bottom surface of the reference plate is parallel to the total radiation meter, the inclination angle of the total radiation meter is exactly the same as the inclination angle of the heat collecting tube. This design has a clever structure, is lightweight, has a low cost, and can quickly adjust the angle of the total radiation meter by simply laying the reference plate flat, with precise adjustment, making the measurement result more accurate.

Description

Technical Field

[0001] The present invention belongs to the field of solar total radiation measurement devices, and particularly relates to a solar radiation measurement device for a solar water heater. Background Art

[0002] A pyranometer, also known as a sky radiometer, is used to measure the total radiation of the direct solar radiation and scattered solar radiation received on a horizontal plane within a 2π solid angle. During the research process of a solar water heater, it is necessary to measure the solar radiation received by the heat collecting tube of the solar water heater, and the measuring tool is a pyranometer. Before measurement, the pyranometer needs to be installed beside the solar water heater, and the tilt angle of the pyranometer needs to be adjusted to be consistent with the surface of the heat collecting tube of the solar water heater.

[0003] Currently, when installing a pyranometer, the angle of the pyranometer angle adjustment mechanism is adjusted by measuring the angle of the heat collecting tube of the solar water heater. The process is not only troublesome, but also the adjustment angle is not precise enough. Summary of the Invention

[0004] In order to overcome the defects of the above technical problems, the present invention provides a solar radiation measurement device for a solar water heater.

[0005] The technical solution is as follows:

[0006] A solar radiation measurement device for a solar water heater includes a pyranometer, an angle calibration mechanism, an angle adjustment mechanism, and a base. The base is provided with a pyranometer, and the base and the pyranometer are connected through the angle adjustment mechanism. One side of the pyranometer is connected to the angle calibration mechanism; the angle adjustment mechanism includes a support member and a spherical ball. The lower end of the support member is connected to the base, and the upper end of the support member is provided with a semi-circular groove adapted to the size of the spherical ball. The spherical ball is arranged in the groove, and more than half of the spherical ball is within the groove. The radius of the groove opening is smaller than the radius of the spherical ball, and the part of the spherical ball outside the groove is connected to the lower end of the pyranometer; the angle calibration mechanism includes a horizontal rod, a vertical rod, and a reference plate. One end of the horizontal rod is horizontally connected to the pyranometer, and the other end is perpendicularly connected to the vertical rod. The vertical rod is a telescopic rod, and the vertical rod is arranged below the horizontal rod, and the lower end of the vertical rod is connected to the reference plate. The bottom of the reference plate is a plane, and this plane is perpendicular to the vertical rod.

[0007] When this design is in use, the device is placed beside the solar water heater, and then the reference plate is moved and placed on the heat collecting tube of the solar water heater. The telescopic rod is adjusted until the bottom surface of the reference plate is in complete contact with the heat collecting tube. At this time, since the bottom surface of the reference plate is parallel to the horizontal rod, that is, the bottom surface of the reference plate is parallel to the pyranometer, the tilt angle of the pyranometer is exactly the same as the tilt angle of the heat collecting tube.

[0008] The design is ingenious, lightweight, and inexpensive. The angle of the pyranometer can be quickly adjusted by simply laying the reference plate flat, and the adjustment is precise, making the measurement results more accurate. In addition, the reference plate is laid flat on the collector tube by gravity, which is very stable. Even if it shakes during the measurement process after installation, the reference plate will still lie flat on the surface of the collector tube due to gravity, that is, the pyranometer and the collector tube will always remain parallel.

[0009] A fixing device is detachably provided on one side of the base, and the fixing device is composed of two opposite hooks connected together, and an obtuse angle is formed between the two hooks.

[0010] With this design, the invention can be hung on the bracket of the solar water heater and can be removed when the hanging is not needed.

[0011] The horizontal rod comprises a pipe sleeve and a thin rod arranged in the pipe sleeve and matched with the size of the pipe sleeve. Through holes are arranged at intervals on the pipe sleeve, and through holes are also arranged at intervals on the thin rod. The thin rod and the pipe sleeve are connected by bolts passing through their through holes.

[0012] This design allows the length of the horizontal rod to be adjusted, so that the invention can be installed in a wider range of locations. When not in use, the length of the horizontal rod can be shortened to facilitate transportation and storage.

[0013] The longitudinal rod is a telescopic rod which can automatically extend and contract after being stressed.

[0014] This design allows the pyranometer to automatically adjust its angle, and when the position of the solar water heater or the device of the present invention changes slightly, the pyranometer will also correct its angle simultaneously.

[0015] The longitudinal rod includes a main sleeve with an opening at the lower end and a core rod arranged in the main sleeve and slidingly matched with the main sleeve. A slide groove along the length direction of the main sleeve is arranged on the inner wall of the main sleeve. A protrusion is arranged on the side of the upper end of the core rod. The protrusion is arranged in the slide groove. A filling is arranged at the lower end of the slide groove to block the slide groove.

[0016] A rubber layer is arranged on the top of the inner wall of the main sleeve.

[0017] With this design, when the present invention is not in use, the top of the core rod can be pushed into the top of the main sleeve, and the rubber layer can clamp the core rod, thereby facilitating transportation and storage.

[0018] The longitudinal rod is made of stainless steel.

[0019] The reference plate is a hollow plate provided with perforations.

[0020] This design is windproof. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is Figure 1 the top view of.

[0023] Figure 3 It is a schematic diagram of the angle adjustment mechanism.

[0024] Figure 4 It is a structural schematic diagram of the present invention installed on a solar water heater.

[0025] Figure 5 It is Figure 4 the view after omitting some structures in.

[0026] Figure 6 It is a structural schematic diagram of the longitudinal rod.

[0027] Wherein: 1, pyranometer; 2, angle calibration mechanism; 21, horizontal rod; 211, pipe sleeve; 212, thin rod; 22, longitudinal rod; 221, main sleeve; 222, core rod; 223, chute; 224, protrusion; 225, rubber layer; 23, reference plate; 3, angle adjustment mechanism; 31, support; 32, spherical ball; 4, base; 41, fixing device. Specific embodiments

[0028] As Figure 1 and 2 , a solar radiation measurement device for a solar water heater, comprising a pyranometer 1, an angle calibration mechanism 2, an angle adjustment mechanism 3, and a base 4. The base 4 is provided with the pyranometer 1, and the base 4 and the pyranometer 1 are connected by the angle adjustment mechanism 3. One side of the pyranometer 1 is connected to the angle calibration mechanism 2.

[0029] As Figure 3 , the angle adjustment mechanism 3 includes a support 31 and a spherical ball 32. As Figure 1 , the lower end of the support 31 is connected to the base 4, and the upper end of the support 31 is provided with a semi-circular groove adapted to the size of the spherical ball 32. The spherical ball 32 is arranged in the groove, and more than half of the spherical part of the spherical ball 32 is in the groove. The radius of the groove opening is smaller than the radius of the spherical ball, that is, the spherical ball 32 can rotate in the groove but cannot be taken out of the groove. The part of the spherical ball outside the groove is connected to the lower end of the pyranometer 1. In practice, if the two are connected by a cylinder with a small radius, a larger rotation angle can be obtained.

[0030] As Figure 1 and 2, the angle calibration mechanism 2 includes a horizontal rod 21, a longitudinal rod 22 and a reference plate 23. One end of the horizontal rod 21 is horizontally connected to the total radiation meter 1, that is, the length direction of the horizontal rod is parallel to the top surface of the total radiation meter 1, and the other end is perpendicularly connected to the longitudinal rod 22. The longitudinal rod 22 is a telescopic rod, which is arranged below the horizontal rod 21, and the lower end of the longitudinal rod 22 is connected to the reference plate 23. The bottom of the reference plate 23 is a plane, and this plane is perpendicular to the longitudinal rod 22, so this plane is parallel to the total radiation meter.

[0031] One side of the base 4 is detachably provided with a fixing device 41, which is composed of two opposite hooks connected to each other, and an obtuse angle is formed between these two hooks, as shown in Figure 5 . The installation situation is shown in Figure 4 .

[0032] Such as Figure 1 , the horizontal rod 21 includes a sleeve 211 and a thin rod 212 arranged in the sleeve 211 and adapted to the size of the sleeve. Through holes are arranged at intervals on the sleeve 211, and through holes are also arranged at intervals on the thin rod 212. The thin rod 212 and the sleeve 211 are connected by bolts passing through their through holes.

[0033] The longitudinal rod 22 is a telescopic rod that can automatically extend and contract after being stressed. It can be purchased on the market. The following design is adopted in this embodiment:

[0034] Such as Figure 6 , the longitudinal rod 22 includes a main sleeve 221 with an open lower end and a core rod 222 arranged in the main sleeve 221 and slidably matched with the main sleeve. A chute 223 is arranged on the inner wall of the main sleeve 221 along the length direction of the main sleeve 221. A protrusion 224 is arranged on the upper side of the core rod 222, and this protrusion 224 is arranged in the chute 223. The lower end of the chute 223 is filled to block the chute.

[0035] A rubber layer 225 is arranged at the top of the inner wall of the main sleeve 221.

[0036] The longitudinal rod 22 is made of stainless steel.

[0037] The reference plate is a perforated hollow plate.

Claims

1. A solar radiation measuring device for a solar water heater, characterized in that: It includes a pyranometer, an angle calibration mechanism, an angle adjustment mechanism, and a base. The pyranometer is arranged on the base, and the base is connected to the pyranometer through the angle adjustment mechanism. One side of the pyranometer is connected to the angle calibration mechanism. The angle adjustment mechanism includes a support member and a spherical ball. The lower end of the support member is connected to the base, and the upper end of the support member is provided with a semi-circular groove adapted to the size of the spherical ball. The spherical ball is arranged in the groove, and more than half of the spherical ball is within the groove. The radius of the groove opening is smaller than the radius of the spherical ball, and the part of the spherical ball outside the groove is connected to the lower end of the pyranometer. The angle calibration mechanism includes a horizontal rod, a vertical rod, and a reference plate. One end of the horizontal rod is horizontally connected to the pyranometer, and the other end is perpendicularly connected to the vertical rod. The vertical rod is a telescopic rod, and the vertical rod is arranged below the horizontal rod. The lower end of the vertical rod is connected to the reference plate. The bottom of the reference plate is a plane, and this plane is perpendicular to the vertical rod.

2. The solar radiation measuring device for a solar water heater according to claim 1, characterized in that: A fixing device is detachably arranged on one side of the base. The fixing device is composed of two opposite hooks connected together, and an obtuse angle is formed between the two hooks.

3. The solar radiation measuring device for a solar water heater according to claim 1 or 2, characterized in that: The horizontal rod includes a tube sleeve and a thin rod arranged within the tube sleeve and adapted to the size of the tube sleeve. Through holes are spacedly arranged on the tube sleeve, and through holes are also spacedly arranged on the thin rod. The thin rod and the tube sleeve are connected by bolts passing through their through holes.

4. The solar radiation measuring device for a solar water heater according to claim 1 or 2, characterized in that: The vertical rod is a telescopic rod that can automatically extend and contract under force.

5. The solar radiation measuring device for a solar water heater according to claim 4, characterized in that: The vertical rod includes a main sleeve with an open lower end and a core rod arranged within the main sleeve and slidingly matched with the main sleeve. A chute is arranged on the inner wall of the main sleeve along the length direction of the main sleeve. A protrusion is arranged on the side surface of the upper end of the core rod, and this protrusion is arranged in the chute. The lower end of the chute is filled to block the chute.

6. The solar radiation measuring device for a solar water heater according to claim 5, characterized in that: A rubber layer is arranged at the top of the inner wall of the main sleeve.

7. The solar radiation measuring device for a solar water heater according to claim 6, characterized in that: The vertical rod is made of stainless steel.

8. The solar radiation measuring device for a solar water heater according to claim 1, characterized in that: The reference plate is a perforated hollow plate.

Images