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Large-diameter water storage tank with labyrinth type water distribution function and water distribution method for keeping thermocline stable

A labyrinth, water storage tank technology, applied in the direction of preheating hot water accumulator, preheating, steam generation, etc., can solve the problems affecting the normal use of the system, uneven water temperature in the tank, and easy destruction of the thermocline layer. Achieve the effects of avoiding damage, reducing the influence of disturbance, and ensuring the temperature of the medium

Inactive Publication Date: 2018-12-07
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large diameter of the water tank, usually 20 to 30 meters, it is easy to cause uneven water temperature in the tank during the process of entering and exiting the water tank, and due to the disturbance of the entering and exiting water, the thermoclinic layer at the junction of cold and hot water is extremely Easily damaged, seriously affecting the normal use of the system

Method used

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  • Large-diameter water storage tank with labyrinth type water distribution function and water distribution method for keeping thermocline stable
  • Large-diameter water storage tank with labyrinth type water distribution function and water distribution method for keeping thermocline stable

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Experimental program
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Effect test

Embodiment 1

[0014] A large-diameter water storage tank for labyrinth water distribution, which consists of: a water storage tank, two sets of labyrinth water distribution devices are arranged in the water storage tank, one set of labyrinth water distribution devices is used for water intake, Another set of labyrinth water distribution device is used for water outlet, and is respectively installed on the upper and lower parts of the water storage tank;

[0015] The labyrinth water distribution device includes a group of branch pipes 1, a group of ring pipes 2 and headers 3, adjacent ring pipes are connected through branch pipes, and the innermost ring pipe is connected with the header through branch pipes. A group of small holes with the same diameter are evenly opened on the ring pipe of the water storage tank. The small holes face away from the direction of the thermocline layer of the water storage tank. The direction of the small hole of the pipe is consistent, and the number of turns ...

Embodiment 2

[0017] The water distribution method of the above-mentioned large-diameter water storage tank with labyrinth water distribution to maintain the stability of the thermocline layer, in the water inlet condition, the water is first distributed to the first ring of branch pipes through the header, and then enters the first ring of ring pipes, and a part of the water It is sprayed out through the small holes on the ring pipe, and the rest of the water enters the next ring of branch pipes and flows step by step; in the water outlet condition, the flow direction is opposite;

[0018] The labyrinth water distribution device ensures that the flow rate of the medium in each part is consistent by adjusting the diameter of each part of the pipe. At the same time, the calculation ensures that the surrounding area that can be affected by the unit length of each ring pipe is the same, that is, each ring pipe is from the inside to the outside. The radius increases and the distance between the ...

Embodiment 3

[0020] According to the large-diameter water storage tank for labyrinth water distribution according to claim 1, the main body of the labyrinth water distribution device is composed of ring pipes, branch pipes and headers, and the ring pipes, branch pipes and headers are assembled into a whole by welding. The number and size of branch and ring pipes are calculated based on the equipment diameter and water volume. The number of circles of branch pipes and ring pipes refers to the diameter of the equipment, and is calculated and selected according to the method that the surrounding water area that can be affected by the unit circumference of each circle of ring pipes is similar. Small holes are evenly opened on the ring pipe. The circumferential opening range of the small holes is limited between 90° and 120°, and the opening directions of each ring are consistent. The diameter of the small holes depends on the selected small hole flow rate, total water volume and total circumfer...

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Abstract

The invention provides a large-diameter water storage tank with a labyrinth type water distribution function and a water distribution method for keeping a thermocline stable. The phenomenon that the water temperature in a tank is likely to be uneven in the water inflow and outflow processes of the large-diameter water storage tank, the thermocline at the cold water and hot water juncture is easilydamaged due to water inflow and outflow disturbance, and normal use of a system is severely affected. The large-diameter water storage tank comprises a water storage tank body, and two labyrinth typewater distribution devices are arranged in the water storage tank body and are arranged at the upper part and the lower part of the water storage tank body respectively. Each labyrinth type water distribution device comprises a group of branch pipes (1), a set of annular pipes (3) and a header (3), wherein the adjacent annular pipes are connected through the branch pipes, the annular pipe at theinnermost layer is connected with the header through the corresponding branch pipe, and a group of small holes with the same diameter are uniformly formed in the annular pipes. The small holes are opposite to the thermocline of the water storage tank body. The drilling range of the small holes is limited between 90 degrees and 120 degrees in the circumferential direction, and the directions of thesmall holes of the annular pipes are consistent. The large-diameter water storage tank is applied to large storage containers with media having temperature gradients.

Description

Technical field: [0001] The invention relates to a large-diameter water storage tank for labyrinth water distribution and a water distribution method for maintaining the stability of an oblique temperature layer. Background technique: [0002] At present, in order to realize the decoupled operation of power production and heat production, improve the peak-shaving capacity of thermal power units, and effectively alleviate the plight of renewable energy consumption, many cogeneration thermal power units have begun to consider adding heat storage systems to the units. The heat storage system usually has only one water storage tank. Hot water and cold water exist in this tank at the same time, and the interface between the cold and hot water naturally forms a thermocline. However, due to the large diameter of the water tank, usually 20 to 30 meters, it is easy to cause uneven water temperature in the tank during the process of entering and exiting the water tank, and due to the ...

Claims

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Application Information

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IPC IPC(8): F22D3/00
CPCF22D3/00
Inventor 王广林刘学国金莲杨军张志鹏苏雪刚董阳刘瑞梅王良超张小波唐巍高宁李琪邱平
Owner HARBIN BOILER
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