Solar heat collecting tube leak detection device

Abstract

The utility model belongs to the technical field of quality detection, and particularly relates to a solar heat collecting tube leak detection device, which comprises a base, a fixing unit and a leak detection unit, and is characterized in that the fixing unit comprises a cylinder, a first connecting rod, a first rack, a fixing block, two main gears, two auxiliary gears, two limiting blocks, two second racks and a second connecting rod; one end of the first connecting rod is connected with the air cylinder, the other end of the first connecting rod is connected with the first rack, the two sides of the first rack are meshed with the two auxiliary gears respectively, the two auxiliary gears are fixed to the tops of the two main gears respectively, the two second racks are meshed with the two main gears respectively, the second connecting rod is connected with the two limiting blocks, and the second connecting rod penetrates through the two second racks. The leak detection unit comprises a motor, a lead screw, a sliding block and an electric spark leak detector, one end of the lead screw is connected with the motor, the other end of the lead screw is connected with the support, the lead screw penetrates through the sliding block, a sliding groove is formed in one side of the sliding block, and a buckle is arranged in the sliding groove. The device can be used for electrically controlling leakage detection, the heat collecting tube is stably clamped, and a glass tube is not easy to break.

Description

Technical Field

[0001] The utility model belongs to the technical field of quality detection, and in particular relates to a solar heat collecting tube leakage detection device. Background Art

[0002] Existing solar vacuum collector tubes are usually composed of two glass tubes, with a vacuum layer formed between them to reduce heat conduction and radiation losses. When sunlight shines on the outer glass tube, the light energy passes through the glass tube and is absorbed by the absorption plate. The absorption plate converts light energy into heat energy, heating the working medium (usually water or other fluids) in the tube to achieve solar heat energy conversion.

[0003] In order to ensure product quality, the solar vacuum collector tube needs to be leak tested. However, the leak test process usually requires manual handheld spark leak detector to test the solar vacuum collector tube. In addition, the solar vacuum collector tube has a smooth surface and is not easy to fix. It is easy to break when clamped with tools. Utility Model Content

[0004] The utility model aims to solve the problems of waste of manpower and poor clamping tools in the current solar collector tube leak detection as described in the above background technology. A new solar collector tube leak detection device is proposed. The solar collector tube leak detection device has a high degree of automation and can fix the collector tube, making it not easy to break.

[0005] A technical solution adopted to achieve the above-mentioned purpose is a solar collector tube leak detection device, the solar collector tube leak detection device comprising:

[0006] A base, wherein a bracket is provided on the base, and a support plate is provided on one side of the bracket;

[0007] A fixing unit, the fixing unit comprising a cylinder, a first connecting rod, a first rack, a fixing block, two main gears, two sub-gears, two limit blocks, two second racks and a second connecting rod, one end of the first connecting rod is connected to the cylinder, the other end of the first connecting rod is connected to the first rack, both sides of the first rack are respectively meshed with the two sub-gears, the two sub-gears are respectively fixed to the tops of the two main gears, the two second racks are respectively meshed with the two main gears, the two limit blocks are symmetrically arranged on both sides of the fixing block, the second connecting rod connects the two limit blocks, and the second connecting rod passes through the two second racks and is slidably connected;

[0008] A leak detection unit, the leak detection unit includes a motor, a lead screw, a slider and an electric spark leak detector, the motor is arranged on a support plate, one end of the lead screw is connected to the motor, the other end of the lead screw is connected to the bracket, the lead screw passes through the slider and is slidably connected, a slide groove is provided on one side of the slider, and a buckle is provided in the slide groove.

[0009] In the above technical solution, the fixing unit is used to fix the solar heat collecting tube, wherein two second racks extend into the solar heat collecting tube, and the cylinder is started to move the two second racks outward, thereby increasing the distance between the two second racks to support the solar heat collecting tube; the leak detection unit is used to detect leaks in the solar heat collecting tube, wherein the motor drives the lead screw to rotate, thereby driving the slider to move horizontally, so that the detection part of the electric spark leak detector can complete the detection of the entire section of the solar heat collecting tube.

[0010] Furthermore, the two main gears, the two sub-gears, the two limit blocks and the two second racks are symmetrically arranged relative to the first rack.

[0011] In the above technical solution, the symmetrical arrangement enables the two second racks to move in opposite directions at the same speed, so that the pressure of the second racks on the solar heat collecting tube is more uniform and the clamping is more stable.

[0012] Furthermore, the cross section of the second rack is semicircular or semi-elliptical.

[0013] In the above technical solution, the cross-section is set so that the peripheral side of the second rack has an arc, which increases the contact surface with the solar heat collecting tube and prevents the glass tube from being broken due to excessive pressure.

[0014] Furthermore, a gasket is provided on a side of the second rack away from the first rack.

[0015] In the above technical solution, the gasket can play a buffering role to further prevent the glass tube from breaking.

[0016] Furthermore, the spark leak detector includes a leak detector body, a wire, a handle and a probe, the leak detector body is connected to the wire, the wire is connected to the handle, and the handle is connected to the probe.

[0017] Furthermore, the handle is arranged in a slide groove, and the handle is slidably connected to the slide block.

[0018] In the above technical solution, the distance between the probe and the solar heat collecting tube can be adjusted by sliding the handle in the slide groove.

[0019] Furthermore, the probe is an annular rolling spring probe.

[0020] In the above technical solution, the annular rolling spring probe can be sleeved on the outside of the solar heat collecting tube to directly perform leak detection.

[0021] Furthermore, the leak detector body is arranged on the top of the bracket, and the top of the bracket is provided with a through slot, and the wire passes through the through slot.

[0022] In the above technical solution, the through groove provides a space for the wire to pass through, thereby preventing the wire from taking a detour and causing potential safety hazards.

[0023] Furthermore, the leak detection unit also includes a telescopic rod, which is arranged on the top of the slider, and the output end of the telescopic rod is connected to the handle.

[0024] In the above technical solution, the handle position can be electrically adjusted through the telescopic rod to reduce manual operation.

[0025] The advantages of the utility model are:

[0026] 1. The utility model fixes the solar heat collecting tube by means of a fixing unit, and can adjust the distance between the two second racks, so that solar heat collecting tubes of different sizes can be tested. Moreover, the fixing unit can stably clamp the solar heat collecting tube, and the solar heat collecting tube is not easy to break after clamping.

[0027] 2. The utility model uses a motor and a telescopic rod to electrically control the spark leak detector to detect the solar collector tube, which reduces manual operation and is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the fixing unit of the utility model.

[0031] Description of the diagram: 1. base, 2. fixing unit, 3. leak detection unit, 4. spark leak detector, 101. bracket, 102. support plate, 201. cylinder, 202. first connecting rod, 203. first rack, 204. fixing block, 205. main gear, 206. sub-gear, 207. limit block, 208. second rack, 209. second connecting rod, 210. gasket, 301. motor, 302. lead screw, 303. slider, 304. slide groove, 305. buckle, 306. telescopic rod, 401. leak detector body, 402. wire, 403. handle, 404. probe. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] like Figure 1 As shown, a solar collector tube leak detection device is composed of a base 1, a fixing unit 2 and a leak detection unit 3, wherein a bracket 101 is provided on the base, and a support plate 102 is provided on the right side of the bracket.

[0035] like Figure 2 As shown, the fixing unit is composed of a cylinder 201, a first connecting rod 202, a first rack 203, a fixing block 204, two main gears 205, two sub-gears 206, two limit blocks 207, two second racks 208 and a second connecting rod 209, the output end of the cylinder is connected to the first connecting rod, the right end of the first connecting rod is connected to the first rack, the two sides of the first rack are respectively meshed with the two sub-gears, the two sub-gears are respectively fixed on the top of the two main gears, wherein the diameter of the main gear is larger than the sub-gear, the centers of the main gear and the sub-gear are on the same vertical line, the two second racks are respectively meshed with the two main gears, the two limit blocks are symmetrically arranged on both sides of the fixing block, the second connecting rod connects the two limit blocks, and the second connecting rod passes through the two second racks and is slidably connected.

[0036] The two main gears, two sub-gears, two limit blocks and two second racks are symmetrically arranged relative to the first rack. The cross section of the second rack is semicircular, and a gasket 210 is arranged on the arc surface of the second rack.

[0037] The leakage detection unit is composed of a motor 301, a screw 302, a slider 303 and an electric spark leak detector 4. The electric spark leak detector 4 is composed of a leak detector body 401, a wire 402, a handle 403 and a probe 404, wherein the motor is arranged on a support plate, one end of the screw is connected to the motor output end, the other end of the screw is rotatably connected to the bracket, the screw passes through the slider and is slidably connected, a slide groove 304 is provided on one side of the slider, a buckle 305 is provided in the slide groove, the handle is arranged in the slide groove, the handle is slidably connected to the slider, the probe is an annular rolling spring probe, the leak detector body is arranged on the top of the bracket, a through groove is provided on the top of the bracket, one end of the wire is electrically connected to the leak detector body, the other end of the wire passes through the through groove and is electrically connected to the handle, and the other end of the handle is electrically connected to the probe.

[0038] In another embodiment, the leak detection unit further includes a telescopic rod 306, which is fixed to the top of the slider, and the output end of the telescopic rod extends into the slide groove and is fixedly connected to the handle.

[0039] The working process of the utility model is as follows: the solar energy collector tube is sleeved on the outside of the two second racks, the cylinder is started, the cylinder pushes the first connecting rod to move rightward, the first connecting rod drives the first rack to move rightward, the first rack drives the two sub-gears to rotate, the two sub-gears drive the two main gears to rotate, the two main gears drive the two second racks to move outward in the opposite direction, at this time, the distance between the two second racks is continuously increased until they are contacted and fixed with the inner tube of the solar energy collector tube, the cylinder is closed, the telescopic rod is started to adjust the position of the probe until the probe is sleeved on the outside of the solar energy collector tube, the motor is started, the motor drives the lead screw to rotate, and drives the slider from one end of the solar energy collector tube to the other end to complete the leak detection.

[0040] Finally, it should be noted that this embodiment is only used to illustrate the present invention and does not limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A solar collector tube leak detection device, characterized in that: The solar collector tube leak detection device comprises: A base (1), wherein a bracket (101) is provided on the base, and a support plate (102) is provided on one side of the bracket; A fixing unit (2), the fixing unit comprising a cylinder (201), a first connecting rod (202), a first rack (203), a fixing block (204), two main gears (205), two sub-gears (206), two limit blocks (207), two second racks (208) and a second connecting rod (209), one end of the first connecting rod being connected to the cylinder, the other end of the first connecting rod being connected to the first rack, both sides of the first rack being respectively meshed with the two sub-gears, the two sub-gears being respectively fixed to the tops of the two main gears, the two second racks being respectively meshed with the two main gears, the two limit blocks being symmetrically arranged on both sides of the fixing block, the second connecting rod being connected to the two limit blocks, and the second connecting rod passing through the two second racks and being slidably connected; A leak detection unit (3), the leak detection unit comprising a motor (301), a lead screw (302), a slider (303) and an electric spark leak detector (4), the motor being arranged on a support plate, one end of the lead screw being connected to the motor, the other end of the lead screw being connected to a bracket, the lead screw passing through the slider and being slidably connected, a slide groove (304) being arranged on one side of the slider, and a buckle (305) being arranged in the slide groove.

2. The solar collector tube leak detection device according to claim 1, characterized in that: The two main gears, the two sub-gears, the two limit blocks and the two second racks are symmetrically arranged relative to the first rack.

3. The solar collector tube leak detection device according to claim 1, characterized in that: The cross section of the second rack is semicircular or semi-elliptical.

4. The solar collector tube leak detection device according to claim 1, characterized in that: A gasket (210) is provided on a side of the second rack away from the first rack.

5. The solar collector tube leak detection device according to claim 1, characterized in that: The electric spark leak detector comprises a leak detector body (401), a wire (402), a handle (403) and a probe (404); the leak detector body is connected to the wire, the wire is connected to the handle, and the handle is connected to the probe.

6. The solar collector tube leak detection device according to claim 5, characterized in that: The handle is arranged in the slide groove, and the handle is slidably connected with the slide block.

7. The solar collector tube leak detection device according to claim 5, characterized in that: The probe is an annular rolling spring probe.

8. The solar collector tube leak detection device according to claim 5, characterized in that: The leak detector body is arranged on the top of the bracket, and a through slot is arranged on the top of the bracket, and the wire passes through the through slot.

9. The solar collector tube leak detection device according to claim 5, characterized in that: The leak detection unit also includes a telescopic rod (306), which is arranged on the top of the sliding block, and the output end of the telescopic rod is connected to the handle.

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