High-temperature molten salt storage tank liquid inlet pipeline

Abstract

The utility model discloses a high temperature molten salt storage tank liquid inlet pipeline, including liquid inlet vertical pipe, and the liquid inlet vertical pipe outside fixedly equipped with the temperature insulation sleeve, and the temperature insulation sleeve is fixedly connected with the molten salt storage tank vault, and the molten salt storage tank side wall is fixedly installed with a plurality of longitudinal support, and the longitudinal support is slidably installed with the liquid storage vertical pipe, and the liquid storage vertical pipe upper end is equipped with the liquid inlet vertical pipe lower end outside, and the molten salt storage tank bottom is fixedly installed with a plurality of horizontal support, and the liquid storage vertical pipe lower end is fixedly connected with the liquid storage cross pipe, and the liquid storage cross pipe is placed on the horizontal support upper end, and the molten salt storage tank bottom is fixedly installed with a plurality of ring pipe support, and the ring pipe support upper end is placed with the liquid distribution ring pipe, and the liquid distribution ring pipe is connected with the liquid storage cross pipe far from the liquid storage vertical pipe one end. The utility model is in the longitudinal support, horizontal support position, adopts movable joint all, provides space for the deformation of pipeline, reduces the possibility that the connecting structure is damaged under stress.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-temperature pipelines, and relates to an inlet pipeline for a high-temperature molten salt storage tank. Background Technology

[0002] High-temperature molten salt storage tanks are key energy storage devices in high-temperature molten salt energy storage technology. The temperature of the medium stored in high-temperature molten salt storage tanks exceeds 500℃. When high-temperature molten salt enters the tank, it generates relatively high thermal stress. Traditional high-temperature molten salt storage tanks have inlet risers connected to the tank dome. From the tank dome to the bottom, the internal riser, horizontal pipe, and liquid distribution ring pipe have a complex structure with many constraints, resulting in high thermal stress in the inlet pipeline of the high-temperature molten salt storage tank. In particular, the stress superposition at the opening of the dome can easily cause the weld at the opening of the dome to crack, creating a safety hazard. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a liquid inlet pipe for a high-temperature molten salt storage tank, which effectively solves the problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A liquid inlet pipe for a high-temperature molten salt storage tank includes:

[0006] The liquid inlet riser is equipped with a flange at its upper end, which connects to the high-temperature molten salt pipeline.

[0007] A thermal insulation sleeve is fixedly sleeved on the outside of the liquid inlet riser and is fixedly connected to the dome of the molten salt storage tank.

[0008] Longitudinal supports, multiple of which are fixedly installed on the side wall of the molten salt storage tank;

[0009] A liquid storage riser is slidably installed inside the longitudinal support, with the upper end of the liquid storage riser sleeved outside the lower end of the liquid inlet riser.

[0010] Horizontal supports, multiple of which are fixedly installed at the bottom of the molten salt storage tank;

[0011] A liquid storage horizontal tube, the first end of which is connected to the lower end of the liquid storage vertical tube, and the liquid storage horizontal tube is placed on the upper end of the horizontal support.

[0012] Ring pipe supports, multiple ring pipe supports are fixedly installed at the bottom of the molten salt storage tank;

[0013] A liquid distribution ring pipe is placed on the upper end of the ring pipe support and connected to the second end of the liquid storage horizontal pipe.

[0014] The U-shaped frame is provided at the upper end of both the horizontal support and the ring pipe support, and the liquid storage horizontal pipe and the liquid distribution ring pipe are placed inside the U-shaped frame.

[0015] Optionally, the insulation sleeve includes a material holding cylinder, which is fixedly installed on the dome of the molten salt storage tank. The liquid inlet riser passes through the bottom of the material holding cylinder, and the material holding cylinder is filled with heat insulation material.

[0016] Optionally, a funnel-shaped expansion pipe is fixedly connected to the upper end of the liquid storage riser, and the lower end of the liquid inlet riser is located inside the expansion pipe.

[0017] Optionally, the longitudinal support includes fixed rods, two of which are fixedly connected to the side wall of the molten salt storage tank. The liquid storage riser is located between the two fixed rods. Two limiting angle irons are fixedly connected to the upper end of the fixed rods. The liquid storage riser is located between the two limiting angle irons, and the distance between the two limiting angle irons is greater than the diameter of the liquid storage riser.

[0018] Optionally, a limit U-card is fixedly connected to the upper end of the U-shaped frame.

[0019] Compared with the prior art, this utility model has the following beneficial effects: A heat-insulating sleeve is installed between the inlet riser and the top of the molten salt storage tank to reduce heat transfer between them, thereby preventing high-temperature deformation from causing cracks in the connection with the top of the molten salt storage tank. The pipeline is separated into an inlet riser and a storage riser, and the inlet riser and storage riser are connected by a sleeve. When the storage riser, storage horizontal pipe, and distribution ring pipe deform, the impact on the inlet riser is reduced. Furthermore, movable connections are used at the longitudinal and transverse support positions to provide space for pipeline deformation and reduce the possibility of stress damage to the connection structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the heat insulation sleeve part according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the longitudinal support portion according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the horizontal support portion of an embodiment of this utility model.

[0024] Reference numerals: 11. Inlet riser; 12. Storage riser; 121. Expanded diameter pipe; 2. Insulation sleeve; 21. Material container; 22. Insulation material; 31. Longitudinal support; 311. Fixing rod; 312. Limiting angle iron; 32. Transverse support; 33. Ring pipe support; 34. U-shaped frame; 35. Limiting U-clamp; 41. Storage horizontal pipe; 42. Distribution ring pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 4 This is an example of a high-temperature molten salt storage tank inlet pipe disclosed in an embodiment of this utility model. Please refer to [link / reference]. Figure 1 The system includes an inlet riser 11, with a flange at its upper end connecting to a high-temperature molten salt pipeline. An insulating sleeve 2 is fixedly fitted onto the outside of the inlet riser 11 and is fixedly connected to the dome of the molten salt storage tank. Multiple longitudinal supports 31 are fixedly installed on the side wall of the molten salt storage tank. A storage riser 12 is slidably installed within each longitudinal support 31, with its upper end fitted onto the outside of the lower end of the inlet riser 11. Multiple transverse supports 32 are fixedly installed at the bottom of the molten salt storage tank. The lower end of the liquid storage riser 12 is fixedly connected to the liquid storage horizontal pipe 41, which is placed on the upper end of the horizontal support 32. Multiple ring pipe supports 33 are fixedly installed at the bottom of the molten salt storage tank. A liquid distribution ring pipe 42 is placed on the upper end of the ring pipe support 33. The liquid distribution ring pipe 42 is connected to the end of the liquid storage horizontal pipe 41 away from the liquid storage riser 12. Both the horizontal support 32 and the ring pipe support 33 are equipped with U-shaped frames 34, and the liquid storage horizontal pipe 41 and the liquid distribution ring pipe 42 are placed in the U-shaped frames 34.

[0027] Specifically, an insulating sleeve 2 is installed between the inlet riser 11 and the top of the molten salt storage tank to reduce heat transfer between the inlet riser 11 and the top of the molten salt storage tank, thereby preventing the connection to the top of the molten salt storage tank from cracking due to high-temperature deformation. The pipeline is disconnected and divided into an inlet riser 11 and a storage riser 12, and the inlet riser 11 and the storage riser 12 are connected. When the storage riser 12, the storage horizontal pipe 41 and the distribution ring pipe 42 deform, the impact on the inlet riser 11 is reduced. Furthermore, movable connections are used at the longitudinal support 31 and the transverse support 32 to provide space for pipeline deformation and reduce the possibility of stress damage to the connection structure.

[0028] In some feasible configurations, the inlet riser 11, the storage riser 12, the storage horizontal pipe 41, and the distribution ring pipe 42 are all existing molten salt tank inlet pipes, which will not be described in detail here. Multiple longitudinal supports 31 are arranged along the axial direction of the molten salt tank, the transverse supports 32 are arranged along the radial direction of the molten salt tank, and the ring pipe supports 33 are evenly arranged according to the design direction of the distribution ring pipe 42. The longitudinal supports 31, transverse supports 32, and ring pipe supports 32 are welded and installed on the molten salt tank.

[0029] As one specific embodiment of the inlet pipeline for a high-temperature molten salt storage tank provided in the application, please refer to [link / reference]. Figure 2 The insulation sleeve 2 includes a material container 21, which is fixedly installed on the dome of the molten salt storage tank. The liquid inlet riser 11 passes through the bottom of the material container 21, and the material container 21 is filled with heat insulation material 22.

[0030] Overall, the installation of the insulation material 22 is facilitated by the material container 21.

[0031] In some feasible methods, the holding cylinder 21 is made of metal and is connected to the molten salt storage tank and the inlet riser 11 by welding. The heat insulation material 22 can be made of materials such as aluminum silicate fiber and mineral wool that can withstand temperatures above 500°C. At the same time, the bottom of the holding cylinder 21 is set as conical, and deformation seams can be arranged radially around the bottom of the holding cylinder 21. When radial stress is generated in the inlet riser 11, the deformation of the bottom of the holding cylinder 21 absorbs the stress, reducing the possibility of weld cracking.

[0032] As another specific embodiment of the liquid inlet pipe of a high-temperature molten salt storage tank provided in the application, the upper end of the liquid storage riser 12 is fixedly connected to a funnel-shaped expansion pipe 121, and the lower end of the liquid inlet riser 11 is located inside the expansion pipe 121.

[0033] Depending on the specific application scenario, the liquid storage riser 12 receives the high-temperature molten salt flowing out of the liquid inlet riser 11. By setting the expansion pipe 121, it is convenient for the molten salt to enter the liquid storage riser 12. On the other hand, when thermal stress is generated in part of the liquid storage riser 12, causing it to move, the molten salt can still enter the liquid storage riser 12 through the expansion pipe 121.

[0034] Further, please refer to Figure 3 The longitudinal support 31 includes a fixed rod 311. Two fixed rods 311 are fixedly connected to the side wall of the molten salt storage tank. The liquid storage riser 12 is located between the two fixed rods 311. Two limiting angle irons 312 are fixedly connected to the upper end of the fixed rods 311. The liquid storage riser 12 is located between the two limiting angle irons 312. The distance between the two limiting angle irons 312 is greater than the diameter of the liquid storage riser 12.

[0035] It should be understood that by setting the distance between the two limiting angle irons 312 to be greater than the diameter of the liquid storage riser 12, the liquid storage riser 12 has radial movement space, which further reduces the restriction on the liquid storage riser 12 and facilitates the stress release of the liquid storage riser 12, the liquid storage horizontal pipe 41 and the liquid distribution ring pipe 42.

[0036] In some feasible methods, both the fixing rod 311 and the limiting angle iron 312 are angle irons. The side wall of the liquid storage riser 12 is fixedly connected to the upper side of the longitudinal support 31 with a limiting block. There is a certain distance between the limiting block and the longitudinal support 31. By setting the limiting block, the possibility of the liquid storage riser 12 falling under the force when molten salt enters the liquid storage riser 12 and affecting the installation structure of the liquid storage horizontal pipe 41 and the liquid distribution ring pipe 42 is reduced. The maximum falling distance is limited by the limiting block.

[0037] As one specific embodiment of the inlet pipeline for a high-temperature molten salt storage tank provided in the application, please refer to [link / reference]. Figure 4 The upper end of the U-shaped frame 34 is fixedly connected to the limit U-card 35.

[0038] It should be understood that by setting the limiting U-shaped clip 35, the possibility of the liquid storage horizontal pipe 41 and the liquid distribution ring pipe 42 being dislodged from the U-shaped frame 34 under stress deformation is reduced.

[0039] In some feasible methods, both the limiting U-card 35 and the U-shaped frame 34 are in the form of a clamp, and the limiting U-card 35 and the U-shaped frame 34 are welded or bolted together.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid inlet pipe for a high-temperature molten salt storage tank, characterized in that, include: The liquid inlet riser (11) is provided with a flange at its upper end, which is connected to the high-temperature molten salt pipeline; Insulating sleeve (2), the insulating sleeve (2) is fixedly sleeved on the outside of the liquid inlet riser (11), and the insulating sleeve (2) is fixedly connected to the dome of the molten salt storage tank; Longitudinal supports (31), a plurality of said longitudinal supports (31) are fixedly installed on the side wall of the molten salt storage tank; A liquid storage riser (12) is slidably installed inside the longitudinal support (31), with the upper end of the liquid storage riser (12) sleeved on the outer side of the lower end of the liquid inlet riser (11). A horizontal support (32), a plurality of said horizontal supports (32) are fixedly installed at the bottom of the molten salt storage tank; A horizontal storage tube (41) is provided, with its first end connected to the lower end of the vertical storage tube (12), and the horizontal storage tube (41) is placed on the upper end of the horizontal support (32). Ring pipe supports (33), multiple ring pipe supports (33) are fixedly installed at the bottom of the molten salt storage tank; Liquid distribution ring pipe (42), the liquid distribution ring pipe (42) is placed on the upper end of the ring pipe support (33), and the liquid distribution ring pipe (42) is connected to the second end of the liquid storage horizontal pipe (41); The upper ends of the U-shaped frame (34) are provided with the horizontal support (32) and the ring support (33), and the liquid storage horizontal pipe (41) and the liquid distribution ring pipe (42) are placed inside the U-shaped frame (34).

2. The inlet pipe for a high-temperature molten salt storage tank according to claim 1, characterized in that: The insulation sleeve (2) includes a material container (21), which is fixedly installed on the dome of the molten salt storage tank. The liquid inlet riser (11) passes through the bottom of the material container (21), and the material container (21) is filled with heat insulation material (22).

3. The inlet pipe for a high-temperature molten salt storage tank according to claim 1, characterized in that: The upper end of the liquid storage riser (12) is fixedly connected to a funnel-shaped expansion pipe (121), and the lower end of the liquid inlet riser (11) is located inside the expansion pipe (121).

4. The inlet pipe for a high-temperature molten salt storage tank according to claim 3, characterized in that: The longitudinal support (31) includes a fixing rod (311), two fixing rods (311) are fixedly connected to the side wall of the molten salt storage tank, the liquid storage riser (12) is located between the two fixing rods (311), two limiting angle irons (312) are fixedly connected to the upper end of the fixing rod (311), the liquid storage riser (12) is located between the two limiting angle irons (312), and the distance between the two limiting angle irons (312) is greater than the diameter of the liquid storage riser (12).

5. The inlet pipe for a high-temperature molten salt storage tank according to claim 1, characterized in that: The upper end of the U-shaped frame (34) is fixedly connected to a limit U-card (35).

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