Solar high-temperature vacuum tube heat conduction oil heat collector

Abstract

The utility model discloses a solar high-temperature vacuum tube heat conduction oil heat collector which comprises a solar vacuum heat absorption tube, a heat conduction oil central collection box, an inlet and outlet flange, a bearing head, a vacuum tube bottom support and a support. The utility model solves the technical problem that the application of the conventional solar vacuum heat-absorbing tube is limited, effectively increases the heat supply temperature to over 250 DEG C, has a good sealing effect, and can be used in the industry, such as a solar heat-conducting oil boiler; the heat conduction oil is used as a heat supply carrier, no phase change is generated in the heat conduction oil, low-pressure heat supply can be achieved, and safety and reliability are achieved; the heat-conducting oil is used as a working medium, so that no scale is generated; the device can be connected in series and in parallel for use, and can be applied in a large scale.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar heat collection, and in particular relates to a solar high-temperature vacuum tube heat-conducting oil collector. Background Art

[0002] Solar thermal energy is currently widely used in residents' bathing and daily life, and is also widely used in seawater desalination. However, the operating temperature of traditional solar thermal water systems is generally controlled within 55°C, the working fluid used is tap water, and the scale inside the vacuum heat absorption tubes needs to be cleaned frequently. Industrial applications usually require higher heating temperatures. However, when the heating temperature of the existing thermal system exceeds 100°C, the water in the device will produce a large amount of water vapor, which can easily cause the internal pressure of the thermal system to rise sharply and destroy the vacuum heat absorption tubes of the thermal system. Therefore, the existing thermal system cannot meet the high-temperature heating needs of industrial applications. For this reason, it is very necessary to develop a solar high-temperature vacuum tube thermal oil collector with a high heating temperature that can meet industrial use. Utility Model Content

[0003] In order to solve the technical problem of low heating temperature of solar collectors in the prior art, the purpose of the utility model is to provide a solar high-temperature vacuum tube thermal oil collector. By utilizing the physical properties that thermal oil has no phase change within 300℃ and the maximum empty tube temperature of solar vacuum heat absorption tubes can reach 250℃~300℃, the vacuum heat absorption tubes are arranged horizontally in multiple rows, the thermal oil enters the lower part of the central header, and the high-temperature thermal oil overflows from the upper outlet of the central header. The maximum outlet temperature of the thermal oil is designed to be 200℃, so that the solar vacuum heat absorption tubes can increase the heating temperature and realize industrial use.

[0004] The purpose of the present utility model is achieved in this way, including a solar vacuum heat absorption tube, a heat transfer oil central collecting box, an inlet and outlet flange, a socket, a vacuum tube base, and a bracket. The heat transfer oil central collecting box is arranged above the middle part of the bracket. Along the length direction of the heat transfer oil central collecting box, a plurality of sockets are respectively provided on both sides of the heat transfer oil central collecting box, and the sockets are inclined downward. A plurality of vacuum tube bases are respectively provided on both sides of the bracket, and the vacuum tube bases correspond to the sockets one by one. There is a solar vacuum heat absorption tube between each pair of corresponding sockets and vacuum tube bases on the left and right. One end of the solar vacuum heat absorption tube is connected to the socket, and is communicated with the heat transfer oil central collecting box through the socket. The other end of the solar vacuum heat absorption tube is connected to the vacuum tube base, and the end of the solar vacuum heat absorption tube is closed. Inlet and outlet flanges are respectively provided at both ends of the heat transfer oil central collecting box.

[0005] The solar vacuum heat absorption tube uses existing mature technology products well known to those skilled in the art.

[0006] Preferably, the inlet and outlet flanges are equipped with throttling orifice plates, which are used to ensure that the heat transfer oil flow rate of each collector is consistent when multiple solar high-temperature vacuum tube angle heat transfer oil collectors are arranged in parallel.

[0007] Preferably, the acute angle between the axis of the socket and the vertical line of the thermal oil central header is 85°.

[0008] Preferably, the socket joint includes a head body, a connecting pipe, a sealing base ring, and a sealing ring. The head body is a hood-shaped structure, and a connecting pipe is connected to the tail of the hood. A sealing base ring is provided at the hood opening. The connecting pipe is connected to the central collecting tank of the heat transfer oil. The sealing ring is provided in the sealing base ring. The end of the solar vacuum heat absorption tube is inserted into the head body through the hood opening of the head body, and the sealing ring seals the head body and the solar vacuum heat absorption tube. The socket joint has a simple structure. While ensuring the sealing effect, it is very convenient to install the solar vacuum heat absorption tube and is also easy to maintain. After installation, the solar vacuum heat absorption tube is arranged in an inclined manner.

[0009] Preferably, the inner wall of the sealing base ring is provided with a groove with a semicircular cross-section, and the middle part of the outer side of the sealing ring bulges outward to form a convex ring with a semicircular cross-section, and the convex ring is embedded in the groove; the groove of the sealing base ring increases the contact area with the sealing ring and forms a labyrinth seal, further improving the high-temperature sealing performance of the socket joint.

[0010] The sealing ring may be a high-temperature resistant fluororubber sealing ring well known to those skilled in the art, with an operating temperature of 250°C.

[0011] Preferably, the vacuum tube base includes a base body and a fixed slot. The base body is a cover-shaped structure, and the fixed slot is a horizontal U-shaped structure. The fixed slot is fixedly arranged at the bottom of the base body, and the end of the solar vacuum heat absorption tube 1 is inserted into the base body. Cards are fixedly provided on both sides of the bracket, and the U-shaped structure of the fixed slot is inserted into the card plates. On the one hand, the vacuum tube base plays the role of connecting and fixing the solar vacuum heat absorption tube. On the other hand, it adopts a card-mounted structure design, which can quickly assemble the solar vacuum heat absorption tube and the bracket, and is also very convenient for later disassembly and maintenance.

[0012] Preferably, the bracket includes a main support rod, a support column, a connecting flange, a crossbeam, and a header support rod. The main support rod and the crossbeam form a square frame structure. A support column is provided at the bottom of the square frame structure. A connecting flange is provided at the bottom of the support column. The bottom of the heat transfer oil central header is connected to the middle of the crossbeam through the header support rod. Specifically, the overall structure of the bracket can be made of steel.

[0013] Preferably, a bottom oil collecting tank is provided below the central heat transfer oil tank, and the bottom oil collecting tank is parallel to the central heat transfer oil tank; the bottom oil collecting tank is used to collect the outflowing heat transfer oil during maintenance; the bottom oil collecting tank can be made of steel.

[0014] Preferably, the bottom oil collecting trough includes an arc-shaped trough body, stiffening ribs, a head plate, and an oil outlet. A plurality of stiffening ribs are arranged at intervals at the bottom of the arc-shaped trough body. The head plate is arranged at both ends of the arc-shaped trough body to close both ends of the arc-shaped trough body. An oil outlet is provided at the bottom of the arc-shaped trough body. The stiffening ribs are used to improve the strength of the arc-shaped trough body, and the oil outlet is used to drain oil.

[0015] Preferably, the solar high-temperature vacuum tube thermal oil collector is arranged as a whole at an angle, and the working surface composed of several solar vacuum heat absorption tubes faces south, specifically due south, and the angle between the working surface and the horizon is set according to the local latitude.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model solves the technical problems of the current application limitations of solar vacuum heat absorption tubes, effectively increases the heating temperature to over 250°C, has a good sealing effect, and can be used in industry, such as as a solar thermal oil boiler. The utility model uses thermal oil as a heat carrier, and the thermal oil does not produce phase change, which can achieve low-pressure heating, safe and reliable. The utility model uses thermal oil as a working fluid, and no scale is generated. The utility model can also be used in multiple groups in series or parallel, and can be applied on a large scale.

[0018] 2. From the heat transfer oil central header to the vacuum tube bottom support, the solar vacuum heat absorption tubes are arranged in an inclined shape. The low temperature heat transfer oil enters the bottom of the solar vacuum heat absorption tube. After being heated, the heat transfer oil rises and slowly flows out of the heat transfer oil central header, completing the heat transfer oil heating process.

[0019] 3. The overall structure of the utility model is easy to assemble, has high stability, good sealing effect, and is very convenient for subsequent inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the planar structure of the utility model;

[0021] Figure 2 This is a front view structural diagram of the utility model;

[0022] Figure 3 This is a side structural diagram of the present utility model;

[0023] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0024] Figure 5This is a schematic diagram of the planar structure of the thermal oil central header, inlet and outlet flanges, and socket joints;

[0025] Figure 6 This is a side view of the heat transfer oil central header, inlet and outlet flanges, and socket joints;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the thermal oil central header and the socket;

[0027] Figure 8 Schematic diagram of the cross-sectional structure of the socket;

[0028] Figure 9 Schematic diagram of the cross-sectional structure of the sealing cap ring;

[0029] Figure 10 Schematic diagram of the installation structure of the throttle orifice plate;

[0030] Figure 11 Schematic diagram of the cross-sectional structure of the throttling orifice plate;

[0031] Figure 12 Schematic diagram of the cross-sectional structure of the sealing ring;

[0032] Figure 13 This is a schematic diagram of the front view structure of the vacuum tube base;

[0033] Figure 14 This is a side view structural diagram of the vacuum tube base;

[0034] Figure 15 Schematic diagram of the planar structure of the bracket;

[0035] Figure 16 Schematic diagram of the front structure of the bracket;

[0036] Figure 17 Schematic diagram of the side structure of the bracket;

[0037] Figure 18 It is a structural diagram of the bottom oil collecting tank;

[0038] Figure 19 It is a side view structural diagram of the bottom oil collecting tank;

[0039] In the figure: 1-solar vacuum heat absorption tube, 2-thermal oil central header, 3-inlet and outlet flanges, 4-socket joint, 401-head body, 402-connecting pipe, 403-sealing base ring, 404-sealing ring, 405-groove, 406-convex ring, 5-vacuum tube bottom support, 501-bottom support body, 502-fixed card slot, 6-bracket, 601-main support rod, 602-support column, 603-connecting flange, 604-crossbeam, 605-header support rod, 7-throttling orifice plate, 8-bottom oil collecting trough, 801-arc trough body, 802-stiffening rib, 803-head plate, 804-oil outlet, 9-card plate. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the embodiments and drawings, but is not intended to limit the present invention in any way. Any changes or substitutions made based on the teachings of the present invention fall within the scope of protection of the present invention.

[0041] Example 1

[0042] As attached Figure 1 ~Attached Figure 7 The solar high-temperature vacuum tube heat transfer oil collector of the embodiment shown in the figure includes a solar vacuum heat absorption tube 1, a heat transfer oil central collection box 2, an inlet and outlet flange 3, a socket 4, a vacuum tube bottom support 5, and a bracket 6. The heat transfer oil central collection box 2 is arranged above the middle of the bracket 6. Along the length direction of the heat transfer oil central collection box 2, a plurality of sockets 4 are respectively provided on both sides of the heat transfer oil central collection box 2. The sockets 4 are inclined downward. A plurality of vacuum tube bottom supports 5 are respectively provided on both sides of the bracket 6. The vacuum tube bottom supports 5 correspond to the sockets 4 one by one. There is a solar tube between each pair of corresponding sockets 4 and vacuum tube bottom supports 5. Vacuum heat absorption tube 1, one end of the solar vacuum heat absorption tube 1 is connected to the socket 4, and is connected to the heat transfer oil central header 2 through the socket 4, the other end of the solar vacuum heat absorption tube 1 is connected to the vacuum tube base 5, and the end of the solar vacuum heat absorption tube 1 is closed, and the heat transfer oil central header 2 is respectively provided with an inlet and outlet flange 3 at both ends; wherein, the number of solar vacuum heat absorption tubes 1 is 50, with a specification of φ58×1800mm, the specification of the heat transfer oil central header 2 is φ73×4, L=2900mm, the specification of the socket 4 is φ68, and the size of the bracket 6 is 2900mm×3980mm;

[0043] The working system is 10 hours per day, 3,000 hours per year, the heat transfer oil flow rate is 55 kg / h, and the heat transfer oil outlet working temperature is 200°C; according to calculations, the calorific value provided is 1.728×105 kJ / h.

[0044] Example 2

[0045] As attached Figure 10 ~Attached Figure 11As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on the embodiment 1, and the inlet and outlet flanges 3 are equipped with a throttling orifice plate 7.

[0046] Example 3

[0047] As attached Figure 7 As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on the embodiment 2, and the acute angle between the axis of the socket 4 and the vertical line of the thermal oil central header 2 is 85°.

[0048] Example 4

[0049] As attached Figure 8 ~Attached Figure 9 As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on Example 3. The socket joint 4 includes a head body 401, a connecting pipe 402, a sealing base ring 403, and a sealing ring 404. The head body 401 is a hood-shaped structure, and the connecting pipe 402 is connected to the tail of the hood. The hood opening is provided with a sealing base ring 403. The connecting pipe 402 is connected to the thermal oil central collecting tank 2. The sealing ring 404 is provided in the sealing base ring 403. The end of the solar vacuum heat absorption tube 1 is inserted into the head body 401 through the hood opening of the head body 401.

[0050] Example 5

[0051] As attached Figure 12 As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on Example 4. The inner wall of the sealing base ring 403 is provided with a circle of grooves 405 with a semicircular cross-section, and the middle part of the outer side of the sealing ring 404 protrudes outward to form a circle of convex rings 406 with a semicircular cross-section, and the convex ring 406 is embedded in the groove 405.

[0052] Example 6

[0053] As attached Figure 13 ~Attached Figure 14 As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on Example 5. The vacuum tube base 5 includes a base body 501 and a fixed card slot 502. The base body 501 is a cover-like structure, and the fixed card slot 502 is a horizontal U-shaped structure. The fixed card slot 502 is fixed to the bottom of the base body 501, and the end of the solar vacuum heat absorption tube 1 is clamped into the base body 501. Clamping plates 9 are fixed on both sides of the bracket 6, and the U-shaped structure of the fixed card slot 502 is clamped into the clamping plates 9.

[0054] Example 7

[0055] As attached Figure 15 ~Attached Figure 17As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on Example 6, and the bracket 6 includes a main support rod 601, a support column 602, a connecting flange 603, a crossbeam 604, and a header support rod 605. The clamping plate 9 is fixed on the main support rod 601. The main support rod 601 and the crossbeam 604 form a square frame structure. The bottom of the square frame structure is provided with a support column 602, and the bottom of the support column 602 is provided with a connecting flange 603. The bottom of the thermal oil central header 2 is connected to the middle of the crossbeam 604 through the header support rod 605.

[0056] Example 8

[0057] The solar high-temperature vacuum tube thermal oil collector of this embodiment is based on the embodiment 7. A bottom oil collecting tank 8 is provided below the thermal oil central header 2 , and the bottom oil collecting tank 8 is parallel to the thermal oil central header 2 .

[0058] Example 9

[0059] As attached Figure 18 ~Attached Figure 19 As shown, the solar high-temperature vacuum tube thermal oil collector of this embodiment is based on Example 8. The bottom oil collecting trough 8 includes a curved trough body 801, stiffening ribs 802, a head plate 803, and an oil outlet 804. A plurality of stiffening ribs 802 are arranged at intervals at the bottom of the curved trough body 801. The head plate 803 is arranged at both ends of the curved trough body 801 to close both ends of the curved trough body 801. An oil outlet 804 is provided at the bottom of the curved trough body 801.

[0060] The working principle and working process of the utility model are as follows: the heat transfer oil enters the heat transfer oil central header 2 from the lower inlet and outlet flange 3, enters the solar vacuum heat absorption tube 1 through the socket 4, and the heat transfer oil rises after being heated and slowly flows out from the upper inlet and outlet flange 3 of the heat transfer oil central header 2.

Claims

1. A solar high-temperature vacuum tube heat transfer oil collector, comprising a solar vacuum heat absorption tube (1), a heat transfer oil central collection box (2), an inlet and outlet flange (3), a socket (4), a vacuum tube bottom support (5), and a bracket (6), characterized in that The heat transfer oil central header (2) is arranged above the middle of the bracket (6). Along the length direction of the heat transfer oil central header (2), a plurality of sockets (4) are respectively provided on both sides of the heat transfer oil central header (2). The sockets (4) are inclined downward. A plurality of vacuum tube supports (5) are respectively provided on both sides of the bracket (6). The vacuum tube supports (5) correspond to the sockets (4) one by one. There is a solar vacuum heat absorption tube (1) between each pair of corresponding sockets (4) and vacuum tube supports (5). One end of the solar vacuum heat absorption tube (1) is connected to the socket (4) and is communicated with the heat transfer oil central header (2) through the socket (4). The other end of the solar vacuum heat absorption tube (1) is connected to the vacuum tube support (5), and the end of the solar vacuum heat absorption tube (1) is closed. Inlet and outlet flanges (3) are respectively provided at both ends of the heat transfer oil central header (2).

2. The solar high-temperature vacuum tube thermal oil collector according to claim 1 is characterized in that The inlet and outlet flanges (3) are equipped with throttling orifice plates (7).

3. The solar high-temperature vacuum tube thermal oil collector according to claim 1 is characterized in that The acute angle between the axis of the socket (4) and the vertical line of the heat transfer oil central header (2) is 85°.

4. The solar high-temperature vacuum tube thermal oil collector according to claim 1 or 3, characterized in that The socket joint (4) comprises a head body (401), a connecting pipe (402), a sealing support ring (403), and a sealing ring (404); the head body (401) is in a hood-like structure, and the connecting pipe (402) is connected to the tail of the hood; a sealing support ring (403) is provided at the hood opening; the connecting pipe (402) is connected to the heat transfer oil central header (2); the sealing ring (404) is provided in the sealing support ring (403); and the end of the solar vacuum heat absorption tube (1) is inserted into the head body (401) through the hood opening of the head body (401).

5. The solar high-temperature vacuum tube thermal oil collector according to claim 4 is characterized in that The inner wall of the sealing support ring (403) is provided with a groove (405) with a semicircular cross section, and the middle part of the outer side of the sealing ring (404) bulges outward to form a convex ring (406) with a semicircular cross section, and the convex ring (406) is embedded in the groove (405).

6. The solar high-temperature vacuum tube thermal oil collector according to claim 1, characterized in that The vacuum tube base (5) comprises a base body (501) and a fixed card slot (502); the base body (501) is a cover-shaped structure; the fixed card slot (502) is a horizontal U-shaped structure; the fixed card slot (502) is fixedly arranged at the bottom of the base body (501); the end of the solar vacuum heat absorption tube (1) is clamped into the base body (501); clamping plates (9) are fixedly arranged on both sides of the bracket (6); the U-shaped structure of the fixed card slot (502) is clamped into the clamping plates (9).

7. The solar high-temperature vacuum tube thermal oil collector according to claim 1 is characterized in that The bracket (6) comprises a main support rod (601), a support column (602), a connecting flange (603), a crossbeam (604), and a header support rod (605). The main support rod (601) and the crossbeam (604) form a square frame structure. A support column (602) is provided at the bottom of the square frame structure. A connecting flange (603) is provided at the bottom of the support column (602). The bottom of the heat transfer oil central header (2) is connected to the middle of the crossbeam (604) via the header support rod (605).

8. The solar high-temperature vacuum tube thermal oil collector according to claim 1 is characterized in that A bottom oil collecting tank (8) is provided below the heat transfer oil central header (2), and the bottom oil collecting tank (8) is parallel to the heat transfer oil central header (2).

9. The solar high-temperature vacuum tube thermal oil collector according to claim 8, characterized in that The bottom oil collecting trough (8) comprises an arcuate trough body (801), stiffening ribs (802), a head plate (803), and an oil outlet (804). A plurality of stiffening ribs (802) are provided at intervals at the bottom of the arcuate trough body (801). The head plate (803) is provided at both ends of the arcuate trough body (801) to seal both ends of the arcuate trough body (801). The bottom of the arcuate trough body (801) is provided with an oil outlet (804).

10. The solar high-temperature vacuum tube thermal oil collector according to claim 1, characterized in that The solar high-temperature vacuum tube heat-conducting oil collector is arranged as a whole in an inclined manner, and the working surface composed of a plurality of solar vacuum heat-absorbing tubes (1) faces south.

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