Sealing device for heat absorber header of tower-type molten salt photo-thermal power station
By designing sealing adjustment components in the heat absorber connection box of the tower molten salt photothermal power station, the problem of insufficient sealing due to thermal expansion and contraction of the insulation drag plate is solved, and higher sealing and energy efficiency are achieved, energy consumption is reduced and power output is improved.
Patent Information
- Application Number
- CN202422312267.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The insulation drag plates of existing tower molten salt photothermal power station heat absorber joint boxes are prone to frequent drops due to material differences, welding process or metal fatigue, resulting in insufficient sealing, increasing energy consumption and risk of molten salt crystallization and pipe blockage.
A sealing device including a sealing adjustment assembly is designed to adjust the position of the insulation pallet through a combination of the first support frame, the second support frame, a screw sleeve, a stud, a hexagonal block, a rotating wheel and a fireproof cloth, prevent displacement due to thermal expansion and contraction, enhance sealing, and insulating the heat-insulating protection through protective cotton and a fireproof cloth.
It improves the sealing of the heat absorber joint box, reduces energy consumption, reduces heat loss, and ensures the stability of the joint box temperature and the increase in electricity.
Smart Images
Figure CN223121708U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of photothermal conversion, in particular to a sealing device for a heat absorber header of a tower-type molten salt photothermal power station. Background Art
[0002] The absorber is one of the core equipment in the tower molten salt solar thermal power station. Its main function is to receive solar energy reflected from the heliostat field and use this energy to heat the binary molten salt inside. Binary molten salt is a substance that can work stably within a specific temperature range (approximately 255°C to 600°C). It will change its physical state at a lower temperature (crystallization begins at 238°C and solidification begins at 221°C). The absorber receives and concentrates solar radiation energy through the vertical plane tube wall composed of the straight tube bundle inside it, thereby heating the molten salt flowing through these tube bundles.
[0003] In the use of existing technologies, the insulation slide plate frequently falls off the header pipe screen due to material differences, welding process or metal fatigue, causing air leakage in the header and insufficient preheating, which in turn causes increased heat loss and power consumption, and there is a risk of molten salt crystallization and pipe blockage.
[0004] Therefore, a sealing device for the absorber manifold of a tower-type molten salt solar thermal power station is proposed. The device is light in weight, has good sealing performance, and is easy to install. When the absorber is filled with salt and is working, it can shrink and expand up and down with the tube panel without causing wear to the tube panel. While reducing the power consumption rate of the plant, it ensures that the temperature of the manifold meets the requirements of the regulations, reduces the preheating time in windy weather, and significantly improves the power consumption. Utility Model Content
[0005] In order to overcome the problem that the insulation slide plate of the existing heat absorber header is prone to frequent falling during use, resulting in poor sealing effect and energy consumption.
[0006] The technical solution of the utility model is: a sealing device for a heat absorber manifold of a tower-type molten salt solar thermal power station, comprising a common header, characterized in that: a uniformly distributed tube screen is arranged on the common header, a sealing adjustment component is arranged above the tube screen, the sealing adjustment component comprises a first support frame, a second support frame, a screw sleeve, a stud, a hexagonal block, a rotating wheel, a fixed disk, and a second trough body; a first support frame and a second support frame are arranged above the tube screen; an inner wall of an end where the first support frame and the second support frame are close to each other is fixedly connected with a uniformly distributed screw sleeve, an end where the second support frame and the first support frame are close to each other is fixedly connected with a uniformly distributed fixed disk, a second trough body is penetrated through the front and rear ends of the fixed disk, a rotating wheel is rotatably arranged on the inner wall of the second trough body, a stud is fixedly connected to the rear end of the rotating wheel, a hexagonal block is fixedly connected to the outer wall of the stud, and the rear end of the stud is threadedly installed on the inner wall of the screw sleeve.
[0007] Preferably, by placing the sealing adjustment component on the tube screen, then placing the heat preservation support plate in front of the component, and rotating the sealing adjustment component, the limiting work of the heat preservation support plate can be realized, preventing the heat preservation support plate from being poorly welded due to the thermal expansion and contraction of the tube screen during subsequent heating and cooling, resulting in insufficient sealing inside the box and rapid heat volatilization, and poor energy-saving effect during subsequent use.
[0008] Preferably, a heat preservation support plate is arranged on the tube screen, a first groove body is opened at the lower end of the heat preservation support plate, and the lower end of the heat preservation support plate is attached to the outer wall of the tube screen.
[0009] Preferably, the sealing adjustment component includes a first protective cotton, a second protective cotton, and a fireproof cloth; the second protective cotton is sleeved on the outer wall of the second support frame, the first protective cotton is sleeved on the outer wall of the first support frame, and the fireproof cloth is sleeved on the outer walls of the first protective cotton and the second protective cotton together.
[0010] Preferably, the first protective cotton and the second protective cotton are made of aluminosilicate material.
[0011] Preferably, the second support frame and the first support frame are made by welding steel pipes to each other.
[0012] Preferably, the heat preservation support plate is located at the front end of the sealing adjustment component, and the front end of the fireproof cloth is attached to the rear end of the heat preservation support plate.
[0013] Preferably, the screw sleeve, the screw stud, the hexagonal block, and the rotating wheel are made of high-temperature resistant metal material.
[0014] The beneficial effects of the present utility model:
[0015] 1. By lifting the middle part of the fireproof cloth, and then rotating a plurality of hexagonal blocks to adjust the distance between the two second support frames and the first support frame, the heat preservation support plate at the front end of the sealing adjustment component is limited, preventing the heat preservation support plate from displacing, thereby improving the sealing performance of the absorber header, and solving the problem of insufficient sealing inside the box caused by the thermal expansion and contraction of the pipeline during use, thus improving the energy consumption;
[0016] 2. The first protective cotton, the second protective cotton, and the fireproof cloth on the sealing adjustment component can prevent the first support frame and the second support frame from expanding due to heat insulation when the inside of the box is overheated, and prevent the problem of abrasion of the tube screen caused by the expansion of the first support frame and the second support frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Shown is a three-dimensional structural schematic diagram of a sealing device for an absorber header of a tower-type molten salt solar thermal power station of the present utility model;
[0018] Figure 2 The figure shows a three-dimensional structural schematic diagram of a tube panel of a sealing device for a header of a tower-type molten salt solar thermal power plant of the present utility model;
[0019] Figure 3 The figure shows a sectional three-dimensional structural schematic diagram of a sealing device for a header of a tower-type molten salt solar thermal power plant of the present utility model;
[0020] Figure 4 The figure shows a three-dimensional structural schematic diagram of a sealing adjustment component of a sealing device for a header of a tower-type molten salt solar thermal power plant of the present utility model.
[0021] The reference signs in the drawings are: 1, common header; 101, first support frame; 102, second support frame; 103, screw sleeve; 104, stud; 105, hexagonal block; 106, rotating wheel; 107, fixed disk; 108, second groove; 109, first protective cotton; 110, second protective cotton; 111, fireproof cloth; 2, tube panel; 3, heat preservation support plate; 4, first groove. Specific embodiments
[0022] The present utility model will be further described below with reference to the drawings and embodiments.
[0023] Please refer to Figures 1-4 As shown in the figure, the present utility model provides an embodiment: A sealing device for a header of a tower-type molten salt solar thermal power plant includes a common header 1. Uniformly distributed tube panels 2 are arranged on the common header 1. A sealing adjustment component is arranged above the tube panel 2. The sealing adjustment component includes a first support frame 101, a second support frame 102, a screw sleeve 103, a stud 104, a hexagonal block 105, a rotating wheel 106, a fixed disk 107, and a second groove 108. A first support frame 101 and a second support frame 102 are arranged above the tube panel 2. Uniformly distributed screw sleeves 103 are fixedly connected to the inner walls of the mutually close ends of the first support frame 101 and the second support frame 102. Uniformly distributed fixed disks 107 are fixedly connected to the mutually close ends of the second support frame 102 and the first support frame 101. Second grooves 108 are penetrated and opened at the front and rear ends of the fixed disk 107. Rotating wheels 106 are rotatably arranged on the inner walls of the second grooves 108. A stud 104 is fixedly connected to the rear end of the rotating wheel 106. A hexagonal block 105 is fixedly connected to the outer wall of the stud 104. The rear end of the stud 104 is threadedly installed in the screw sleeve 103.
[0024] Please refer to Figures 1-2In this embodiment, a thermal insulation support plate 3 is provided on the tube panel 2, a first groove body 4 is opened at the lower end of the thermal insulation support plate 3, the lower end of the thermal insulation support plate 3 is fitted with the outer wall of the tube panel 2, and the thermal insulation support plate 3 is welded above the tube panel 2, the thermal insulation support plate 3 is located at the vent in the box, the thermal insulation support plate 3 is located at the front end of the sealing adjustment component, and the front end of the fireproof cloth 111 is fitted with the rear end of the thermal insulation support plate 3 to prevent the tube panel 2 from expanding and contracting due to heat and cold, so that the thermal insulation support plate 3 is not firmly welded on the tube panel 2.
[0025] See also Figures 3-4 In this embodiment, the sealing adjustment component includes a first protective cotton 109, a second protective cotton 110, and a fireproof cloth 111; the outer wall of the second supporting frame 102 is covered with the second protective cotton 110, and the outer wall of the first supporting frame 101 is covered with the first protective cotton 109, and the outer walls of the first protective cotton 109 and the second protective cotton 110 are jointly covered with a fireproof cloth 111, and the first protective cotton 109 and the second protective cotton 110 are made of aluminum silicate material, so that the first protective cotton 109 and the second protective cotton 110 have good heat insulation, the second supporting frame 102 and the first supporting frame 101 are made of steel pipes welded to each other, the screw sleeve 103, the stud 104, the hexagonal block 105 and the rotating wheel 106 are made of high temperature resistant metal material to prevent the high temperature in the box during use, resulting in the inability to adjust when necessary later.
[0026] During operation, the sealing adjustment component is placed on the tube panel 2. When the sealing device in the box needs to be adjusted, the middle part of the fireproof cloth 111 is opened, and then the spacing between the two second support frames 102 and the first support frame 101 is adjusted by rotating a plurality of hexagonal blocks 105, so as to limit the heat preservation support plate 3 at the front end of the sealing adjustment component to prevent the heat preservation support plate 3 from being displaced, thereby improving the sealing performance of the heat absorber header;
[0027] The first protective cotton 109, the second protective cotton 110 and the fireproof cloth 111 on the sealing and adjusting assembly can prevent the first supporting frame 101 and the second supporting frame 102 from expanding and wearing the tube panel 2 when the box is overheated by insulating the first supporting frame 101 and the second supporting frame 102;
[0028] This prevents the tube panel 2 from expanding and contracting due to heat, which may cause the insulation support plate 3 to be loosely welded to the tube panel 2, resulting in displacement of the position of the insulation support plate 3, thereby causing poor sealing effect in the box.
[0029] Through the above steps, by placing the sealing adjustment component on the tube screen 2, then placing the heat preservation support plate 3 in front of the component, and rotating the adjustment of the sealing adjustment component, the limiting work of the heat preservation support plate 3 can be realized, preventing the heat preservation support plate 3 from being poorly welded due to the thermal expansion and contraction of the tube screen 2 during subsequent heating and cooling, resulting in insufficient sealing in the box and rapid heat volatilization, and poor energy-saving effect during subsequent use.
[0030] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.
Claims
1. A sealing device for a header of a solar tower molten salt receiver, comprising a common header (1), characterized in that: A common header (1) is provided with evenly distributed tube screens (2). Above the tube screens (2), a sealing and adjusting assembly is provided. The sealing and adjusting assembly includes a first support frame (101), a second support frame (102), a screw sleeve (103), a screw stud (104), a hexagonal block (105), a rotating wheel (106), a fixed disk (107), and a second groove body (108). Above the tube screens (2), a first support frame (101) and a second support frame (102) are provided. The inner walls of the ends of the first support frame (101) and the second support frame (102) close to each other are fixedly connected with evenly distributed screw sleeves (103). The ends of the second support frame (102) and the first support frame (101) close to each other are fixedly connected with evenly distributed fixed disks (107). Second groove bodies (108) are penetrated and opened at the front and rear ends of the fixed disk (107). Rotating wheels (106) are rotatably arranged on the inner walls of the second groove bodies (108). A screw stud (104) is fixedly connected to the rear end of the rotating wheel (106). A hexagonal block (105) is fixedly connected to the outer wall of the screw stud (104). The rear end of the screw stud (104) is threadedly installed on the inner wall of the screw sleeve (103).
2. The sealing device of the header of the absorber of a tower molten salt solar thermal power station according to claim 1, characterized in that: The tube screen (2) is provided with a heat preservation support plate (3). A first groove body (4) is opened at the lower end of the heat preservation support plate (3). The lower end of the heat preservation support plate (3) is attached to the outer wall of the tube screen (2).
3. The sealing device for the header of the solar receiver of a tower-type molten salt solar thermal power station according to claim 1, characterized in that: The sealing and adjusting assembly includes a first protective cotton (109), a second protective cotton (110), and a fireproof cloth (111). A second protective cotton (110) is sleeved on the outer wall of the second support frame (102). A first protective cotton (109) is sleeved on the outer wall of the first support frame (101). A fireproof cloth (111) is sleeved on the outer walls of the first protective cotton (109) and the second protective cotton (110).
4. The sealing device of the header of the solar receiver of a tower-type molten salt solar thermal power station according to claim 3, wherein: The first protective cotton (109) and the second protective cotton (110) are made of aluminosilicate material.
5. The sealing device of the header of the absorber of a tower-type molten salt solar thermal power station according to claim 1, characterized in that: The second support frame (102) and the first support frame (101) are made by welding steel pipes to each other.
6. The sealing device of the header of the absorber of a tower-type molten salt solar thermal power station according to claim 3, characterized in that: The heat preservation support plate (3) is located at the front end of the sealing and adjusting assembly. The front end of the fireproof cloth (111) is attached to the rear end of the heat preservation support plate (3).
7. The sealing device of the header of the absorber of a tower-type molten salt solar thermal power station according to claim 1, characterized in that: The screw sleeve (103), the screw stud (104), the hexagonal block (105), and the rotating wheel (106) are made of high-temperature resistant metal material.