CN105757631A - Multilevel spiral pipe solar steam generator - Google Patents

Abstract

The invention discloses a multi-layer spiral tube solar steam generator, which comprises a cylinder body, the upper and lower ends of the cylinder body are respectively provided with an upper seal head and a lower seal head, and the cylinder body is provided with a first straight pipe at the edge and a second straight pipe at the center. Straight-through pipe, a plurality of spiral pipes are arranged at equal intervals from top to bottom in the cylinder. The spiral pipe is a pipe that is spirally bent on a plane. The outer end of the spiral pipe is connected to the first straight pipe, and the inner end of the spiral pipe is connected to the second straight pipe. One side of the inner wall of the cylinder is provided with two fixed plates facing up and down, the first straight-through pipe is fixed between the two fixed plates, and the other side of the inner wall of the cylinder is provided with a plurality of support blocks distributed at equal intervals up and down, and each spiral One side of the tube is located on the corresponding support block, a first steam-water separation plate is arranged between the cylinder body and the upper head, and the top of the second straight-through pipe is connected to the first steam-water separation plate through a connecting column. The multi-layer spiral tube solar steam generator of the present invention has simple structure, convenient maintenance and replacement, low cost and high heat exchange efficiency.

Description

Multi-layer spiral tube solar steam generator

technical field

The invention relates to the technical field of solar power generation, in particular to a multi-layer spiral tube solar steam generator.

Background technique

As a new type of non-polluting energy, solar energy has broad prospects and has attracted more and more attention from governments. Solar thermal power occupies an increasingly important position in the proportion of energy due to its cleanliness and safety. Steam generators are the core of solar thermal power plants. The core component is known as the "heart". The existing steam generator adopts a single spiral coil structure, that is, the coil spirals from bottom to top, and the coil is an integrated structure, which has the following two problems 1. If the coil leaks, it cannot be repaired due to the small gap between the coils, resulting in the need to replace the entire coil, and the cost is high; 2. The heat exchange area of the coil is insufficient, and the heat exchange efficiency is not high, which is in urgent need of improvement.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a multi-layer spiral tube solar steam generator with simple structure, convenient maintenance and replacement, low cost and high heat exchange efficiency.

In order to achieve the above object, the technical solution of the present invention is: a multi-layer spiral tube solar steam generator, comprising a hollow cylindrical cylinder with openings at both ends, the upper and lower ends of the cylinder are respectively provided with an upper seal and a lower seal. head, the cylinder is provided with a first straight pipe located at the inner edge of the cylinder and a second straight pipe located at the inner center of the cylinder, and a plurality of spiral pipes are arranged at equal intervals from top to bottom in the cylinder, and the spiral pipe It is a pipe that is spirally bent on a plane, the outer end of the spiral pipe is connected to the first straight pipe, the inner end of the spiral pipe is connected to the second straight pipe, and two fixed plates facing up and down are arranged on one side of the inner wall of the cylinder. The first straight pipe is fixed between two fixing plates, and the other side of the inner wall of the cylinder is provided with a plurality of support blocks distributed up and down at equal intervals, and one side of each spiral tube is located on the corresponding support block, A first steam-water separation plate is provided between the cylinder body and the upper head, and the top end of the second straight-through pipe is connected to the first steam-water separation plate through a connecting column.

The bottom of the first through pipe is connected with an oil inlet pipe protruding from the lower head, and the side wall of the second through pipe near the top is provided with an oil outlet pipe extending out of the cylinder.

A water inlet pipe is provided at the center of the bottom of the lower head, and a plurality of legs are evenly distributed around the bottom edge of the lower head.

A steam outlet pipe is provided at the top center of the upper head, and a second steam-water separation plate is provided at the inner center of the upper head corresponding to the steam outlet pipe.

The beneficial effect of the present invention is: the spiral tube of each layer is a tube that is helically bent on a plane, so that the area occupied by the spiral tube inside the cylinder is relatively large, which greatly improves the heat exchange efficiency; at the same time, when the spiral tube leaks It only needs to repair or replace the spiral tube of a certain layer separately, and the cost is low, and the upper and lower adjacent layers of spiral tubes are separated by a certain distance, making the maintenance process more convenient.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a partial top view of the barrel of the present invention.

In the figure: cylinder 1, upper head 11, lower head 12, feet 13, first straight pipe 2, fixed plate 21, oil inlet pipe 22, second straight pipe 3, oil outlet pipe 31, connecting column 32, screw Pipe 4, support block 41, first steam-water separation plate 5, water inlet pipe 6, steam outlet pipe 61, second steam-water separation plate 62.

detailed description

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the multi-layer spiral tube solar steam generator comprises a hollow cylindrical cylinder 1 with openings at both ends, and the upper and lower ends of the cylinder 1 are respectively provided with an upper seal 11 and a lower seal. The head 12, the upper head 11 and the lower head 12 are arc-shaped structures, which are convenient for diversion.

The cylinder body 1 is provided with a first straight-through pipe 2 located at the inner edge of the cylinder body 1 and a second straight-through pipe 3 located at the inner center of the cylinder body 1, and a plurality of spiral pipes are arranged at equal intervals from top to bottom in the cylinder body 1. Pipe 4, the spiral pipe 4 is a pipe that is spirally bent on a plane, the outer end of the spiral pipe 4 is connected to the first straight pipe 2, and the inner end of the spiral pipe 4 is connected to the second straight pipe 3, and the spiral pipe of each layer 4 After repeated spiral bending, the overall heat exchange area is large, which greatly improves the heat exchange efficiency; at the same time, when the spiral tube 4 leaks, only the spiral tube 4 of a certain layer needs to be repaired or replaced separately, and the cost is low; and the upper and lower sides are adjacent The two layers of spiral pipes 4 are separated by a certain distance, which makes the maintenance process more convenient.

One side of the inner wall of the cylinder body 1 is provided with two fixing plates 21 facing up and down, and the first straight pipe 2 is fixed between the two fixing plates 21. This setting makes the fixing of the first straight pipe 2 more convenient. At the same time, the helical tube 4 will not be affected, and the fixing plate 21 located below offers a hole for the oil inlet pipe 22 to pass through.

The other side of the inner wall of the cylinder body 1 is provided with a plurality of support blocks 41 distributed at equal intervals up and down, and one side of each spiral tube 4 is located on the corresponding support block 41, so that the spiral tube 4 of each layer forms a first straight through The three supporting connection points of the pipe 2, the second straight-through pipe 3 and the support block 41 are more reliable during operation.

A first steam-water separation plate 5 is provided between the cylinder body 1 and the upper head 11, and the top of the second straight-through pipe 3 is connected to the first steam-water separation plate 5 through a connecting column 32, and the first steam-water separation plate 5 can preliminarily separate the water droplets mixed in the steam, and at the same time can strengthen the structural strength between the cylinder body 1 and the upper head 11, and can also play a role in positioning the second straight pipe 3.

The bottom of the first straight pipe 2 is connected with an oil inlet pipe 22 protruding from the lower head 12 , and the side wall of the second straight pipe 3 near the top is provided with an oil outlet pipe 31 protruding from the barrel 1 . The heat transfer oil enters the first straight pipe 2 from the oil inlet pipe 22 and enters the second straight pipe 3 along the spiral pipe 4 of each layer, and finally flows out from the oil outlet pipe 31 for circulation.

The bottom center of the lower head 12 is provided with a water inlet pipe 6 , and a plurality of legs 13 are evenly distributed around the bottom edge of the lower head 12 , and the number of the legs 13 can be three or four.

The top center of the upper head 11 is provided with a steam outlet pipe 61, and the inner center of the upper head 11 is provided with a second steam-water separation plate 62 corresponding to the steam outlet pipe 61. Part of the water droplets are blocked.

The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention , should be covered within the protection scope of the present invention.

Claims (4)

1. A multi-layer spiral tube solar steam generator, comprising a hollow cylindrical cylinder (1) with openings at both ends, the upper and lower ends of the cylinder (1) are respectively provided with an upper head (11) and a lower head (12), characterized in that: the cylinder (1) is provided with a first straight pipe (2) located at the inner edge of the cylinder (1) and a second straight pipe (2) located at the inner center of the cylinder (1) 3), the cylindrical body (1) is provided with a plurality of helical tubes (4) at equal intervals from top to bottom, and the helical tubes (4) are helically bent tubes on a plane, and the outer ends of the helical tubes (4) It is connected to the first straight pipe (2), and the inner end of the spiral pipe (4) is connected to the second straight pipe (3). The inner wall of the cylinder (1) is provided with two fixed plates (21) facing up and down, The first straight pipe (2) is fixed between two fixing plates (21), and the other side of the inner wall of the cylinder (1) is provided with a plurality of supporting blocks (41) distributed up and down at equal intervals, each One side of the spiral tube (4) is located on the corresponding support block (41), a first steam-water separation plate (5) is arranged between the cylinder (1) and the upper head (11), and the second The top of the straight pipe (3) is connected to the first steam-water separation plate (5) through a connecting column (32). 2. multi-layer spiral tube solar steam generator as claimed in claim 1, characterized in that: the bottom of the first straight pipe (2) is connected with an oil inlet pipe (22) stretching out from the lower head (12), The side wall of the second straight-through pipe (3) near the top end is provided with an oil outlet pipe (31) protruding from the cylinder (1). 3. The multi-layer spiral tube solar steam generator according to claim 1, characterized in that: the center of the bottom of the lower head (12) is provided with a water inlet pipe (6), and the bottom edge of the lower head (12) is evenly distributed in the circumferential direction A plurality of legs (13). 4. The multi-layer spiral tube solar steam generator according to claim 1, characterized in that: a steam outlet pipe (61) is provided at the top center of the upper head (11), and the inner center of the upper head (11) corresponds to The steam outlet pipe (61) is provided with a second steam-water separation plate (62).