CN115507460A - Water circulation cold accumulation dehumidification system and method applied to comprehensive pipe rack - Google Patents

Water circulation cold accumulation dehumidification system and method applied to comprehensive pipe rack Download PDF

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Publication number
CN115507460A
CN115507460A CN202211165920.XA CN202211165920A CN115507460A CN 115507460 A CN115507460 A CN 115507460A CN 202211165920 A CN202211165920 A CN 202211165920A CN 115507460 A CN115507460 A CN 115507460A
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dehumidification
water
cold accumulation
pipe
condensation
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徐子钦
姚炜
吴颉
汪雷杰
戚琛琛
唐晓俊
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Shanghai Electrical Apparatus Research Institute Group Co Ltd
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Shanghai Electrical Apparatus Research Institute Group Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/228—Treatment of condensate, e.g. sterilising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
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Abstract

The application discloses a water circulation cold accumulation dehumidification system and a method applied to a comprehensive pipe rack, and the system comprises a circulation water purification system and a cold accumulation dehumidification network, wherein the circulation water purification system collects and purifies liquid in the pipe rack; the cold accumulation dehumidification network comprises a cold accumulation pool and a condensation pipe network; the cold storage pool stores water, refrigerates and supplies cold for a condensation pipe network; a refrigeration host is arranged in the cold storage pool, a refrigeration compressor is used for cold storage in summer when the electricity price is low at night, and a heat exchanger is directly used for heat exchange refrigeration with outside air in winter; the condensation pipe network comprises a dehumidification condensation pipe arranged at the air inlet and a dehumidification condensation network arranged on the side wall of the comprehensive pipe rack, and is used for respectively dehumidifying air inlet of the pipe rack and dehumidifying in the pipe rack; the application has the characteristics of green and high energy efficiency; meanwhile, the dehumidification system is linked with the pipe gallery monitoring platform, and the difference between the internal temperature and the external temperature and the difference between the humidity are comprehensively considered, so that the dehumidification effect with the best comprehensive energy efficiency is achieved.

Description

Water circulation cold accumulation dehumidification system and method applied to comprehensive pipe rack
Technical Field
The application relates to a water circulation cold accumulation dehumidification system and method applied to a comprehensive pipe rack, and belongs to the technical field of dehumidification of the comprehensive pipe rack.
Background
The urban underground comprehensive pipe gallery is also called a common ditch, is a public tunnel for intensively laying municipal pipelines such as electric power, communication, broadcast television, water supply, drainage, heat, gas and the like under the city, and is an important infrastructure and a 'lifeline' for ensuring urban operation. The pipe gallery is designed in an intensive mode, municipal pipelines of all cities are managed in a unified mode, the construction space of the overground cities is saved, and meanwhile, the method is one of important means for solving urban diseases, so that the method is gradually and widely used in modern city construction and is one of key indexes for measuring the modern cities. With the rapid development of cities, the urban underground comprehensive pipe gallery has been taken as a life line and a main artery for urban operation and is incorporated into the key construction engineering of the cities, and is an important infrastructure for urban operation.
City utility tunnel then several kilometers short, tens or even hundreds of kilometers long, and the environment is comparatively complicated, and personnel are difficult for long-term on duty, consequently in order to know its inside condition in real time, corresponding monitored control system adopts Area Controller (ACU) and sensor more to and combine the collocation of camera to gather data. Data through the collection when realizing real time monitoring city utility tunnel environmental aspect, can conveniently make timely response to the abnormal conditions, improve operation efficiency and safety control level. Therefore, electronic equipment in the existing urban underground comprehensive pipe gallery is numerous, and the operation and maintenance management of the pipe gallery is very important.
The comprehensive pipe gallery engineering is generally positioned in a space 3-5m away from the ground, the deepest depth of the comprehensive pipe gallery engineering can reach tens of meters, the space is relatively closed due to the surrounding of rock soil or soil, and the communication of internal air and external air mainly depends on the work of a fan of an exhaust system. And the temperature of the surrounding rock soil is basically kept constant and is far lower than the temperature of a typical meteorological day in summer and is far higher than the temperature of a typical meteorological day in winter, so that a pattern of being warm in winter and cool in summer in the pipe gallery is formed. When the outside hot humid air that contains moisture capacity greatly of summer gets into the piping lane through the ventilation opening, the contact of hot humid air and piping lane low temperature wall produces the dewing phenomenon easily, makes steam stay in the piping lane, and groundwater, rainwater seepage etc. circumstances in addition lead to the piping lane to be in under the high humidity environment for a long time. And in winter, high-humidity air in the pipe gallery is easy to condense and frost in low-temperature areas such as personnel entrances and exits, equipment room well mouths and air inlets. The long-term high humidity state of the internal environment can affect the durability of the main structure of the pipe rack, the pipeline of the pipe rack, the bracket and various electronic monitoring devices, so that a method for reducing the humidity inside the pipe rack is urgently needed.
In the main design mode of the existing domestic pipe gallery, a ventilation system mostly adopts a fireproof partition as a unit, two fans are installed at two ends, and a push-pull ventilation mode of air inlet at one end and air exhaust at one end is adopted. Except daily ventilation plan, for guaranteeing that the humidity in the corridor is lower, when the humidity reaches the set threshold value in the corridor, the automatic start fan takes a breath. However, as described in the previous paragraph, this method often cannot reduce the humidity in the pipe gallery well, but rather, it is easier to generate condensation in the low temperature area, and the energy consumption is higher and the effect is worse. Drainage system then mainly comprises drainage canal and collector well, and the rainwater of collection, percolating water etc. are directly accumulated in the collector well, discharge the municipal administration pipeline through the water pump, and this just leads to the water in the piping lane not have the first time discharge piping lane structure, has also further increaseed the humidity of inside airtight environment. Meanwhile, the water collecting well in the pipe gallery is not polluted water, so that the water quality is generally clear, and the secondary utilization can be carried out.
Disclosure of Invention
The technical problem that this application will be solved is how effectively to reduce humidity in the utility tunnel.
In order to solve the technical problems, the technical scheme of the application is to provide a water circulation cold accumulation dehumidification system applied to a comprehensive pipe rack, which comprises a circulation water purification system and a cold accumulation dehumidification network, wherein the circulation water purification system comprises a water collector, a water collecting well and a multi-stage purification module which are arranged in the comprehensive pipe rack; the cold accumulation dehumidification network comprises a cold accumulation pool and a condensation pipe network; the water collector is connected to the water collecting well, and the water collecting well is connected to the cold storage pool through the multi-stage purification module; a refrigeration host, a temperature sensor and a liquid level sensor are arranged in the cold storage pool; it does to be equipped with the water pump in the cold-storage pond the condensation pipe network cooling, the condensation pipe network stretches utility tunnel.
Preferably, the water collector comprises a condensed water collector arranged at the air inlet and the air outlet and a rainwater collector arranged at the leakage area.
Preferably, the condensation pipe network is including locating the dehumidification condenser pipe of air intake, the dehumidification condenser pipe spiral coils and locates the air intake pipe wall, be equipped with the comdenstion water collecting tank on the dehumidification condenser pipe, comdenstion water collector locates the comdenstion water collecting tank export.
Preferably, the condensation pipe network is still including the dehumidification condensation net of locating the utility tunnel lateral wall, the dehumidification condensation net is located the drainage channel top.
Preferably, the multistage purification module comprises a filter mesh bag arranged in the water collecting well, an intermediate sedimentation tank arranged between the water collecting well and the cold storage tank, and a second-stage filter screen arranged between the intermediate sedimentation tank and the cold storage tank.
Preferably, the cold storage pool is wholly sealed and laid with heat insulation materials.
Preferably, the refrigeration host is provided as a refrigeration compressor and/or a heat exchanger connected to the environment outside the piping lane.
Adopt foretell hydrologic cycle cold-storage dehumidification system, this application still provides a hydrologic cycle cold-storage dehumidification method for utility tunnel, specifically as follows:
setting the allowable starting and refrigerating time of the refrigerating host according to the stepped electricity price, starting the refrigerating host when the temperature in the cold storage tank is higher than a set threshold value within the allowable starting and refrigerating time, storing cold in advance by using the electricity price valley in summer, and directly performing heat exchange refrigeration by using the external low-temperature condition in winter;
selecting a threshold value to float in combination with the air temperature in the pipe gallery, wherein the temperature is 15-20 ℃ lower than that in the pipe gallery;
dehumidification system and piping lane monitoring management link, carry out the dehumidification strategy of high energy-conservation through the information that acquires the piping lane operation:
1. comparing the current temperature and humidity difference inside and outside the pipe gallery, determining whether a dehumidification process needs to be started, starting a dehumidification system fifteen minutes before starting a fan for ventilation in the pipe gallery if dehumidification is needed, and stopping cooling after ventilation is finished to save energy;
2. detect the trend of change of humidity in the piping lane, start dehumidification system before humidity reaches the alarm value prerequisite
This application is through piping lane drainage structures collection piping lane structure percolating water, condensate water and nature rainwater etc. carry out cyclic utilization after filtering the sediment, save in the inside heat preservation cold-storage pond of piping lane, utilize night electricity cheap period to carry out the cold-storage with compressor in summer, directly adopt heat exchanger and outside air to carry out the heat exchange refrigeration winter. Along each district section drainage canal of piping lane ground installation intercommunication cold-storage pool's condensation pipe network, pour into the cooling water into when humidity is too high, reduce air humidity and retrieve the comdenstion water and recycle. Set up the dehumidification condenser pipe at the air intake of piping lane, link with the ventilation system of piping lane from taking, borrow the dew point that borrows the dehumidification condenser pipe by the cold source before the fan operation, carry out the dehumidification operation to the air that gets into the piping lane. The environment, operation and the structural feature of this application combined consideration piping lane have green, energy-conserving, the advantage of easily disposing.
Drawings
FIG. 1 is a schematic view of a dehumidification control flow in a pipe rack according to the present application;
FIG. 2 is a schematic view illustrating the air inlet dehumidification process of the pipe gallery according to the present application;
fig. 3 is a schematic diagram of a refrigeration and cold accumulation process in the cold accumulation pool of the present application.
Detailed Description
In order to make the present application more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
The embodiment provides a water circulation cold accumulation dehumidification system and method applied to a comprehensive pipe rack, and the system comprises a circulation water purification system, a cold accumulation dehumidification network and a corresponding control method.
The circulating water purification system comprises a water collector, a water collecting well and a multi-stage purification module. The water collector is mainly based on the drainage system of the pipe gallery, and comprises a condensate water collector with an air inlet and an air outlet and a rainwater collector with a leakage area, wherein the condensate water collector is used for collecting condensate water and rainwater respectively, and collecting water in the pipe gallery as much as possible and collecting the water in a water collecting well. The multi-stage purification module comprises purification equipment at each stage between a water collecting well and a cold storage pool, wherein a filter mesh bag is installed in the water collecting well to remove large-particle impurities and dirt; and then a valve is arranged behind a water outlet pipe of the water collecting well, when no water drainage requirement exists, the primary filtered water is pumped into the intermediate sedimentation tank through the submersible pump for sedimentation, and the purified water on the upper layer of the intermediate sedimentation tank finally flows into the cold storage tank through the secondary filter screen for storage. The cold storage tank has the functions of water storage and refrigeration and cold storage, is wholly closed and laid with heat insulation materials, and is provided with a refrigeration host machine, a temperature sensor and a liquid level sensor. The refrigeration main machine can be powered by the outside to refrigerate by using a refrigeration compressor, and can also adopt a heat exchanger to refrigerate by using the low temperature of the external environment. And a water pump is arranged in the cold storage tank, and cooling water is pumped into the cold storage dehumidification network when cold supply is needed.
The cold accumulation dehumidification network comprises a cold accumulation pool and a condensation pipe network. The cold storage pool is used for containing and collecting circulating purified water, refrigerating the circulating purified water into cooling water through the refrigerating main machine and supplying cold for a condensing pipe network. Condensation pipe network spreads the piping lane complete line, and main cooling part is including setting up the dehumidification condenser pipe at the piping lane air intake and setting up the dehumidification condensation net in the piping lane. The dehumidification condenser pipe is installed under the air intake fan to the spiral coils in the air intake pipe wall, condenses the moisture in the damp and hot air, can greatly reduced get into the humidity of piping lane air, is provided with the comdenstion water collecting tank on the dehumidification condenser pipe, and comdenstion water collecting tank export is provided with condensate collector, and condensate collector communicates to nearest drainage channel, collects the comdenstion water to the sump pit. Dehumidification condensation net lays in the piping lane lateral wall with the form of netted pipeline, installs in the drainage canal top, both can carry out the condensation dehumidification to the air in the corridor, also can reduce the evaporation of drainage canal normal water.
With the application of the system, referring to fig. 1, 2 and 3, the cold accumulation dehumidification control method is as follows:
setting the allowable starting and refrigerating time of the refrigerating host according to the stepped electricity price, such as nine night to six morning in the next day in a city, starting the refrigerating host when the temperature in the cold storage tank is higher than a set threshold value in the allowable starting and refrigerating time, refrigerating in advance for cold storage by using the electricity price valley in summer, and directly performing heat exchange refrigeration by using the external low-temperature condition in winter;
the selection of the cold accumulation threshold value is combined with the air temperature in the pipe gallery to float, and the temperature is 15-20 ℃ lower than that in the pipe gallery, so that the dehumidification effect can be ensured, and too much energy can not be lost due to too large temperature difference;
in the daytime, if the cold storage quantity is insufficient and dehumidification is needed, the refrigeration host can directly supply cold without storage;
dehumidification system and piping lane monitoring management platform carry out the linkage, carry out the dehumidification strategy of high energy-conservation through the information that acquires the piping lane operation: comparing the current temperature and humidity difference inside and outside the pipe gallery, determining whether a dehumidification process needs to be started, if the temperature difference inside and outside is large and the outside air humidity is large, dehumidifying, starting a dehumidification condenser pipe fifteen minutes before starting a fan for ventilation of the pipe gallery, and automatically stopping cooling after the ventilation is finished so as to save energy;
the start-up of dehumidification condensation net then judges through the trend of change that acquires humidity in the piping lane, starts before humidity will reach the alarm value prerequisite, dehumidifies under the condition of higher humidity as far as possible, improves the efficiency of energy utilization.
The application provides a hydrologic cycle cold-storage dehumidification system and method for utility tunnel has mainly solved city utility tunnel humidity too high, the easy dewfall's of summer air inlet section problem. This application combines utility tunnel's actual structure and current function, has designed one set of green, energy-conserving, the water circulating refrigeration cold-storage and the dehumidification scheme that are adapted to the piping lane environment of easily deploying. The water resources such as comdenstion water, percolating water in the recovery pipe gallery carry out the reutilization, refrigerate the cold-storage with the help of the advantage environment of pipe gallery cold in winter and hot in summer, use the compressor to refrigerate in the low price period of electricity night in summer, then carry out the heat exchange refrigeration with the outside air winter, have the characteristics of green, high efficiency. Through at air intake and piping lane internally mounted condensation dehumidification equipment, the humidity of air in can greatly reduced entering pipe rack's steam content and the pipe rack reaches the predetermined target of dehumidification. Meanwhile, the dehumidification system is linked with the pipe gallery monitoring platform, and the difference between the internal temperature and the external temperature and the difference between the humidity are comprehensively considered, so that the dehumidification effect with the best comprehensive energy efficiency is achieved.
The method considers the main structure of the current pipe gallery, can be deployed in the existing pipe gallery without too much engineering quantity, and has the potential of practical application. In addition, the scheme has the potential of further function expansion. When the cooling and heating demands exist in nearby residential areas and commercial areas, the cold storage pool and the corridor inner pipe network can be expanded, and the central center of the area cooling/heating can be easily transformed by relying on the existing pipeline interface of the pipe corridor to the adjacent area. In summer, the large-scale cold accumulation demand can regulate the peak for the power grid, and provide a cheap and green stable cold source for the vicinity; the heat exchange then can be carried out winter, and as ground source heat pump to the heating of adjacent area, solve the problem of moist in the piping lane simultaneously, kill two birds with one stone.

Claims (8)

1. A water circulation cold accumulation dehumidification system applied to a comprehensive pipe rack is characterized by comprising a circulation water purification system and a cold accumulation dehumidification network, wherein the circulation water purification system comprises a water collector, a water collecting well and a multi-stage purification module which are arranged in the comprehensive pipe rack; the cold accumulation dehumidification network comprises a cold accumulation pool and a condensation pipe network; the water collector is connected to the water collecting well, and the water collecting well is connected to the cold storage pool through the multi-stage purification module; a refrigeration host, a temperature sensor and a liquid level sensor are arranged in the cold storage pool; the cold-storage pond is equipped with the water pump and does the condensation pipe network cooling, the condensation pipe network stretches utility tunnel.
2. The water circulation cold accumulation and dehumidification system for the utility tunnel as recited in claim 1, wherein said water collectors comprise a condensate collector disposed at the air inlet and the air outlet and a rain collector disposed at the leakage area.
3. The water circulation cold accumulation dehumidification system applied to the comprehensive pipe rack as claimed in claim 2, wherein the condensation pipe network comprises a dehumidification condensation pipe arranged at the air inlet, the dehumidification condensation pipe is spirally wound on the wall of the air inlet pipe, the dehumidification condensation pipe is provided with a condensation water collecting tank, and the condensation water collector is arranged at the outlet of the condensation water collecting tank.
4. The water circulation cold accumulation dehumidification system for the utility tunnel as set forth in claim 3, wherein the condensation pipe network further comprises a dehumidification condensation network disposed on the side wall of the utility tunnel, and the dehumidification condensation network is located above the drainage channel.
5. The water circulation cold accumulation dehumidification system for the utility tunnel as set forth in claim 1, wherein the multi-stage purification module comprises a filter mesh bag disposed in the water collection well, an intermediate sedimentation tank disposed between the water collection well and the cold accumulation tank, and a secondary filter mesh disposed between the intermediate sedimentation tank and the cold accumulation tank.
6. The water circulation cold accumulation and dehumidification system applied to the comprehensive pipe rack as claimed in claim 1, wherein the cold accumulation pool is wholly sealed and laid with heat insulation materials.
7. The water circulation cold accumulation dehumidification system for the utility tunnel as claimed in claim 1, wherein said refrigeration host is a refrigeration compressor and/or a heat exchanger connected to the environment outside the tunnel.
8. A water circulation cold accumulation dehumidification method applied to a comprehensive pipe gallery is characterized in that the water circulation cold accumulation dehumidification system of any one of claims 1 to 7 is adopted, and the method comprises the following steps:
setting the allowable starting and refrigerating time of the refrigerating host according to the stepped electricity price, starting the refrigerating host when the temperature in the cold storage tank is higher than a set threshold value within the allowable starting and refrigerating time, storing cold in advance by using the electricity price valley in summer, and directly performing heat exchange refrigeration by using the external low-temperature condition in winter;
selecting a threshold value to float in combination with the air temperature in the pipe gallery, wherein the temperature is 15-20 ℃ lower than that in the pipe gallery;
the dehumidification system links with piping lane monitoring management, carries out the dehumidification strategy of high energy-conservation through the information that obtains the piping lane operation:
1. comparing the current temperature and humidity difference inside and outside the pipe gallery, determining whether a dehumidification process needs to be started, starting a dehumidification system fifteen minutes before starting a fan for ventilation in the pipe gallery if dehumidification is needed, and stopping cooling after ventilation is finished to save energy;
2. the change trend of humidity in the detection piping lane starts the dehumidification system before humidity reaches the alarm value prerequisite.
CN202211165920.XA 2022-09-23 2022-09-23 Water circulation cold accumulation dehumidification system and method applied to comprehensive pipe rack Pending CN115507460A (en)

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Citations (11)

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