CN116734358A - Siphon type fluid delivery and distribution system diagnosis method and open ice cold accumulation system delivery and distribution system - Google Patents

Siphon type fluid delivery and distribution system diagnosis method and open ice cold accumulation system delivery and distribution system Download PDF

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Publication number
CN116734358A
CN116734358A CN202311026442.9A CN202311026442A CN116734358A CN 116734358 A CN116734358 A CN 116734358A CN 202311026442 A CN202311026442 A CN 202311026442A CN 116734358 A CN116734358 A CN 116734358A
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China
Prior art keywords
siphon
head
fluid
highest point
reservoir
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CN202311026442.9A
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CN116734358B (en
Inventor
许健
王朝晖
胡优彬
陆春富
朱春光
旷金国
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Shenzhen Qianhai Energy Technology Development Co ltd
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Shenzhen Qianhai Energy Technology Development Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F10/00—Siphons
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/10—Pressure
    • F24F2140/12—Heat-exchange fluid pressure

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Water Supply & Treatment (AREA)
  • Public Health (AREA)
  • Hydrology & Water Resources (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The invention discloses a diagnostic method of a siphon type fluid delivery and distribution system, which is used in the siphon type fluid delivery and distribution system, and the siphon type fluid delivery and distribution system comprises: the siphon comprises a body part, a bending part and an extending part, wherein two ends of the bending part are respectively communicated with the body part and the extending part, the extending part extends into the reservoir, and the branch pipe is communicated with the body part; the siphon type fluid delivery and distribution system diagnosis method comprises the following steps: dividing the siphon type fluid conveying and distributing system into a stop state and an operation state; and detecting the pipe water head under the stop state and the running state respectively so as to judge whether the siphon pipe has air accumulation or not. The diagnosis method of the siphon type fluid delivery and distribution system can diagnose whether the air accumulation exists in the siphon pipe, thereby being convenient for working personnel to stop the machine and exhaust operation in time and reducing the influence of vacuum air accumulation on a cold water accumulation system.

Description

Siphon type fluid delivery and distribution system diagnosis method and open ice cold accumulation system delivery and distribution system
Technical Field
The invention relates to the technical field of new energy, in particular to a siphon type fluid delivery and distribution system diagnosis method and an open ice cold accumulation system delivery and distribution system.
Background
In the related art, an ice cold accumulation air conditioner in a building cold accumulation system utilizes night low-valley load electric power to make ice and store the ice in an ice accumulation device, utilizes the phase change latent heat of the ice to store cold energy, and releases the stored cold energy by melting ice in daytime so as to reduce the power consumption load of the air conditioner in the peak period of a power grid and the installed capacity of the air conditioning system. After the ice cold storage air conditioner or the water cold storage air conditioner is installed, the air conditioner construction is usually debugged and operated.
In the existing building cold accumulation system, a siphon type fluid delivery system is used for delivering fluid in a water supply tank to user air conditioning equipment. However, in some cases, due to poor air tightness of the pipeline engineering installation, gas generation during the process, air bubbles entrained by the delivery fluid, precipitation of fine air nuclei in the fluid caused by siphon negative pressure increase, and other reasons, the siphon type fluid delivery system in actual operation has a partial air accumulation phenomenon in the negative pressure pipe section, so that the delivery capacity of the water pump is far lower than the design flow, and the cold release capacity of the cold storage system is limited.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a diagnosis method for the siphon type fluid delivery and distribution system, which can diagnose whether the air accumulation exists in the siphon pipe, thereby being convenient for a worker to stop the operation of exhausting in time, reducing the influence of the vacuum air accumulation on the cold storage system and improving the cold release capacity of the cold storage system.
The invention also provides a transmission and distribution system of the open ice storage system.
A method of diagnosing a siphonic fluid delivery system according to an embodiment of the first aspect of the present invention, for use in a siphonic fluid delivery system, the siphonic fluid delivery system comprising: the siphon comprises a body part, a bending part and an extending part, wherein two ends of the bending part are respectively communicated with the body part and the extending part, the extending part extends into the reservoir, and the branch pipe is communicated with the body part;
the siphon type fluid delivery and distribution system diagnosis method comprises the following steps:
dividing the siphon type fluid conveying and distributing system into a stop state and an operation state;
and detecting the pipe water head under the stop state and the running state respectively so as to judge whether the siphon pipe has air accumulation or not.
The diagnosis method of the siphon type fluid delivery and distribution system has at least the following beneficial effects: after the siphon type fluid delivery and distribution system is divided into a stop state and an operation state, detecting the pressure measuring pipe water head of the siphon type fluid delivery and distribution system in the stop state and detecting the pressure measuring pipe water head of the siphon type fluid delivery and distribution system in the operation state, so that whether the siphon has air accumulation or not can be judged. Therefore, when the air accumulation in the siphon pipe is judged, the air can be conveniently exhausted by a worker. Specifically, the diagnosis method of the siphon type fluid delivery and distribution system can diagnose whether the air accumulation exists in the siphon pipe, thereby being convenient for a worker to stop and exhaust in time, reducing the influence of vacuum air accumulation on the cold storage system, and improving the cold release capacity of the cold storage system.
According to some embodiments of the invention, when the siphon fluid delivery system is in the shutdown state, P1 is the piezometric head at the highest point of the siphon, P2 is the piezometric head at the lowest point of the siphon, P3 is the piezometric head at the next highest point of the siphon, Z1 is the position head of the highest point of the siphon, Z2 is the position head of the lowest point of the siphon, Z3 is the position head of the next highest point of the siphon, X3 is the position head of the liquid level of the fluid in the reservoir, wherein when p1=x3—z1, p2=x3—z2, p3=x3—z3, no gas is trapped in the siphon.
According to some embodiments of the invention, when the siphon fluid delivery system is in the off state, P1 is a head of a piezometer at a highest point of the siphon, Z1 is a head of a position of the highest point of the siphon, and X3 is a head of a position of a level of fluid in the reservoir, wherein when P1 > X3-Z1, a portion of the gas and a portion of the fluid are present in the bend.
According to some embodiments of the invention, when the siphon fluid delivery system is in the shutdown state, P1 is the piezometric head at the highest point of the siphon, P2 is the piezometric head at the lowest point of the siphon, P3 is the piezometric head at the next highest point of the siphon, Z2 is the position head of the lowest point of the siphon, Z3 is the position head of the next highest point of the siphon, Z4 is the position head of the lowest point of the bend, X1 is the position head of the rising fluid level in the bend, X2 is the position head of the falling fluid level in the bend, X3 is the position head of the fluid level in the reservoir, wherein when x1=x3—p1 < Z4, P2 is measured, and when x2 > Z3, x2=p2+z2—z3 is further obtained, if p3=p2+z2—z3, the volume of the bend and the gas do not exist, and the volume of the gas does not exist.
According to some embodiments of the invention, when the siphon fluid delivery system is in the stopped state, P1 is the piezometric head at the highest point of the siphon, P2 is the piezometric head at the lowest point of the siphon, P3 is the piezometric head at the next highest point of the siphon, Z2 is the position head of the lowest point of the siphon, Z3 is the position head of the next highest point of the siphon, Z4 is the position head of the lowest point of the bend, X1 is the position head of the rising fluid level in the bend, X2 is the position head of the falling fluid level in the bend, X3 is the position head of the fluid level in the reservoir, wherein when x1=x3—p1 < Z4, P2 is measured, and when x2 < Z3, x2=p2+z2—z3 is further obtained, if p3=p2+z2—z3, the volume of the bend and the body is present in the absence of the gas and the gas is present near the one end of the bend.
According to some embodiments of the invention, when the siphon fluid delivery system is in the stopped state, P1 is the piezometric head at the highest point of the siphon, P2 is the piezometric head at the lowest point of the siphon, P3 is the piezometric head at the next highest point of the siphon, Z2 is the position head of the lowest point of the siphon, Z3 is the position head of the next highest point of the siphon, Z4 is the position head of the lowest point of the bend, X1 is the position head of the fluid rising level in the bend, X2 is the position head of the fluid falling level in the bend, X3 is the position head of the fluid level in the reservoir, wherein when x1=x3—p1 < Z4, P2 is measured, and when x2 < Z3, x2=p2+z2—p3 is further obtained, if p3 > p2+z2—z3, the volume of the body and the body are present at both ends of the bend and the body are present.
According to some embodiments of the invention, when the siphon fluid delivery system is in the operating state, P1 is the head of the pressure tube at the highest point of the siphon, P2 is the head of the pressure tube at the lowest point of the siphon, P3 is the head of the pressure tube at the next highest point of the siphon, Z1 is the head of the siphon at the highest point, Z2 is the head of the siphon at the lowest point, Z3 is the head of the siphon at the next highest point, X3 is the head of the fluid level in the reservoir, wherein when P1 is less than or equal to X3-Z1, P2 is less than or equal to X3-Z2, and P3 is less than or equal to X3-Z3, no gas is trapped in the siphon.
According to some embodiments of the invention, when |P1| -0.5m > |X 3-Z1|, the protrusion is blocked.
According to some embodiments of the invention, when the siphon fluid delivery system is in the operating state, P2 is the head of the pressure tube at the lowest point of the siphon, P3 is the head of the pressure tube at the next highest point of the siphon, Z2 is the head of the position of the lowest point of the siphon, X3 is the head of the position of the level of the fluid in the reservoir, wherein when |p2| -0.5m > |x3-Z2|, |p3| -0.5m > |x3-Z2|, then there is an air accumulation in the siphon.
An open ice thermal storage system delivery system according to an embodiment of the second aspect of the present invention comprises:
a reservoir for storing a fluid;
and the water supply pipe is communicated with the reservoir, and the highest position of the water supply pipe is lower than the liquid level of the fluid in the reservoir.
The open ice cold accumulation system transmission and distribution system provided by the embodiment of the invention has at least the following beneficial effects: the negative pressure of the siphon tube can be changed into positive pressure because the highest position of the water supply pipe is lower than the liquid level of the fluid in the reservoir. In other words, the highest position of the water supply pipe is lower than the liquid level of the fluid in the reservoir, so that the occurrence of siphoning phenomenon can be avoided, and the occurrence of air accumulation in the water supply pipe can be effectively reduced. Therefore, the transmission and distribution system of the open ice cold accumulation system can effectively avoid being influenced by vacuum air accumulation, and the cold release capacity of the cold accumulation system is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic illustration of a siphon fluid dispensing system in a diagnostic method of the siphon fluid dispensing system according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a siphon fluid delivery system according to a diagnostic method of a siphon fluid delivery system according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a siphon fluid delivery system according to a diagnostic method of a siphon fluid delivery system according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of a siphon fluid delivery system according to a diagnostic method of a siphon fluid delivery system according to a fourth embodiment of the present invention;
FIG. 5 is a schematic diagram of a siphon fluid delivery system according to a fifth embodiment of the diagnostic method of the siphon fluid delivery system of the present invention;
fig. 6 is a schematic diagram of an open ice thermal storage system delivery system according to some embodiments of the invention.
Reference numerals:
the water reservoir 100, the siphon tube 200, the body part 210, the bending part 220, the protrusion part 230, the water supply pipe 300, and the branch pipe 400.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In some embodiments, a siphon fluid delivery system diagnostic method is used in a siphon fluid delivery system, the siphon fluid delivery system comprising: the water reservoir 100, the siphon tube 200 and the branch 400. Siphon tube 200 includes a body portion 210, a curved portion 220, and an extension 230. Both ends of the bending part 220 are respectively connected to the body part 210 and the extending part 230, the bending part 220 is bent to be in an inverted U shape, and the extending part 230 extends into the reservoir 100. The branch pipe 400 communicates with the body portion 210. The branch pipe 400 may be connected to the water inlet pump, so that the fluid in the reservoir 100 may pass through the siphon pipe 200, the branch pipe 400 and the water inlet pump and finally enter the user equipment to exchange heat. The user equipment may be an air conditioner. The fluid in the reservoir 100 may be ice water or water. The structure of a siphonic fluid delivery system can be seen in fig. 1.
The siphon type fluid delivery and distribution system diagnosis method comprises the following steps:
s100, dividing the siphon type fluid conveying and distributing system into a stop state and an operation state;
s200, detecting the pressure measuring pipe water heads in the stop state and the running state respectively to judge whether the air accumulation exists in the siphon pipe 200.
Specifically, after the siphon fluid delivery and distribution system is divided into a stop state and an operation state, the siphon fluid delivery and distribution system pressure measuring pipe head in the stop state is detected, and the siphon fluid delivery and distribution system pressure measuring pipe head in the operation state is detected, so that whether the air accumulation exists in the siphon 200 can be judged. Thus, when the siphon 200 is judged to have the accumulated air, the operator can conveniently exhaust the air. Specifically, the diagnosis method of the siphon type fluid delivery and distribution system can diagnose whether the air accumulation exists in the siphon 200, thereby being convenient for a worker to stop the machine and exhaust in time and reducing the influence of the vacuum air accumulation on the cold water accumulation system.
The method for diagnosing the siphon type fluid delivery and distribution system can comprehensively and accurately diagnose the vacuum air accumulation phenomenon of the hydraulic pipeline, identify the water distribution state of the pipeline system, monitor and analyze parameters of the shutdown and the operation process in real time, guide operation staff to perform shutdown and exhaust operation in time, and reduce the influence of the vacuum air accumulation on the operation performance. That is, after diagnosing whether there is air accumulation in the siphon tube 200 by the siphon type fluid delivery and distribution system diagnosis method, the cooling releasing capacity of the ice storage system can be improved.
The manner in which the head of the pipe is measured is understood to be the manner in which the pressure value is measured. The head of the piezometer tube can be replaced by a pressure value according to common knowledge. By measuring the pressure values of different objects at different locations in the siphon fluid delivery system, it can be determined whether there is an air accumulation in the siphon tube 200.
In the siphon type fluid delivery system, it is described in detail below how the presence of air accumulation in the siphon tube 200 can be determined by detecting the position head when the siphon type fluid delivery system is in a stopped state.
The following is the first case. Referring to fig. 1, in some embodiments, when the siphon fluid delivery system is in a shutdown state, P1 is the head of the pressure vessel at the highest point of the fluid in the siphon tube 200. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
When p1=x3-Z1, p2=x3-Z2, p3=x3-Z3, no air is accumulated in the siphon tube 200. Specifically, when the above three conditions are satisfied, the siphon tube 200 is filled with fluid, no air accumulation occurs, and in this case, no air discharge is required by the worker. The condition of the fluid in the siphon 200 can be seen in fig. 1.
The second case is as follows. Referring to fig. 2, in some embodiments, when the siphon fluid delivery system is in a shutdown state, P1 is the head of the pressure vessel at the highest point of the fluid in the siphon tube 200. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
Wherein when P1 > X3-Z1, then a portion of the gas and a portion of the fluid are present in the bend 220. Specifically, in this case, the accumulated air in the bent portion 220 may be pumped away by pumping at the highest point of the siphon tube 200, thereby ensuring a better cold releasing capacity of the cold storage water system. The condition of the fluid in the siphon 200 can be seen in fig. 2.
The following is the third case. Referring to fig. 3, in some embodiments, when the siphon fluid delivery system is in a shutdown state, P1 is the head of the pressure vessel at the highest point of the fluid in the siphon tube 200. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
Wherein when x1=x3-p1 < Z4, P2 is measured, and x2=p2+z2-P1 is further obtained, and when X2 > Z3, if p3=p2+z2-Z3 is true, there is air accumulation and no fluid in the bending portion 220, and there is no air accumulation in the body portion 210. Specifically, in this case, all of the inside of the bent portion 220 is air accumulation, and no fluid exists. Fluid will be distributed in the extension 230 and the body 210. In this case, the siphon tube 200 may be pumped up at the highest position of the siphon tube 200, and the siphon tube 200 may be filled with fluid by municipal water to discharge the accumulated air. The condition of the fluid in the siphon 200 can be seen in fig. 3.
The following is the fourth case. Referring to fig. 4, in some embodiments, when the siphon fluid delivery system is in a shutdown state, P1 is the head of the pressure vessel at the highest point of the fluid in the siphon tube 200. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
Wherein when x1=x3-p1 < Z4, P2 is measured, and x2=p2+z2-P1 is further obtained, and when X2 < Z3, if p3=p2+z2-Z3 is true, there is an air accumulation and no fluid in the bending portion 220, and an air accumulation exists at an end of the body portion 210 near the bending portion 220. In this case, there is no fluid in the bending portion 220, and all the air is accumulated, and then there is also air accumulation at the end of the body portion 210 near the bending portion 220 due to the negative pressure effect. In this case, the siphon tube 200 may be pumped up at the highest position of the siphon tube 200, and the siphon tube 200 may be filled with fluid by municipal water to discharge the accumulated air. The condition of the fluid in the siphon 200 can be seen in fig. 4.
The following is a fifth case. Referring to fig. 5, in some embodiments, when the siphon fluid delivery system is in a shutdown state, P1 is the head of the pressure vessel at the highest point of the fluid in the siphon tube 200. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
Wherein when x1=x3-p1 < Z4, P2 is measured, and x2=p2+z2-P1 is further obtained, and when X2 < Z3, if p3 > p2+z2-Z3 is true, there is an air accumulation and no fluid in the bending portion 220, and there is an air accumulation at both ends of the body portion 210. In this case, the gas accumulation is high, and there is gas accumulation at both ends of the body portion 210, and the height of the fluid in the body portion 210 is equal to the level of the fluid in the reservoir 100, and there is no fluid in the bent portion 220. In this case, the siphon tube 200 may be pumped up at the highest position of the siphon tube 200, and the siphon tube 200 may be filled with fluid by municipal water to discharge the accumulated air. The condition of the fluid in the siphon 200 can be seen in fig. 5.
In the siphon type fluid delivery system, it is described in detail below how the presence of air accumulation in the siphon tube 200 can be determined by detecting the position head when the siphon type fluid delivery system is in operation.
The first case follows, referring to FIG. 1, in some embodiments, P1 is the head of the pressure vessel at the highest point of the fluid in the siphon tube 200 when the siphon fluid delivery system is in operation. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
In which there is a pressure drop due to the operating state, which refers to a pressure drop caused by energy loss when fluid flows in the pipe. Thus, when P1 is equal to or less than X3-Z1, P2 is equal to or less than X3-Z2, and P3 is equal to or less than X3-Z3, no air is trapped in siphon tube 200.
Specifically, in the siphon fluid delivery system, when p1=x3-Z1, p2=x3-Z2, p3=x3-Z3 are required in the stopped state, it can be determined that there is no air accumulation in the siphon tube 200. In the running state, no air accumulation in the siphon tube 200 can be judged by only judging that P1 is less than or equal to X3-Z1, P2 is less than or equal to X3-Z2 and P3 is less than or equal to X3-Z3 due to the occurrence of pressure drop. The condition of the fluid in the siphon 200 can be seen in fig. 1.
Further, in some embodiments, when |P1| -0.5m > |X 3-Z1|, then there is a blocking condition for the protrusion 230. Specifically, 0.5m means that a water column pressure of 0.5m corresponds to 5kpa. When the protruding portion 230 is blocked, a worker can examine and repair the protruding portion 230 and then check the condition of the accumulated air.
The second case follows, P1 being the head of the piezometer at the highest point of the fluid in the siphon 200. Wherein the level of fluid in P1 is higher than the level of fluid in reservoir 100. P2 is the head of the piezometer at the lowest point of the fluid in the siphon 200 and P3 is the head of the piezometer at the next highest point of the fluid in the siphon 200. Wherein the level of the fluid in P3 is higher than the level of the fluid in the reservoir 100 on the one hand and lower than the level of the fluid in P1 on the other hand. Z1 is the position head of the highest point of the siphon tube 200. Wherein, the highest point of the siphon tube 200 refers to the highest height of the siphon tube 200 with respect to the horizontal ground. For example, the highest position of the siphon tube 200 is 8m from the ground, where Z1 is the detection position. Wherein the height at Z1 is higher than the level of the fluid in the reservoir 100, the level of the fluid in the reservoir 100 may be 6m. Z2 is the position head of the lowest point of the siphon tube 200. The lowest point of the siphon tube 200 refers to the lowest height of the siphon tube 200 relative to the horizontal ground. Such as 5m from the ground at the lowest position of siphon tube 200. Z3 is the position head of the next highest point of siphon 200. The next highest point of the siphon tube 200 is a position in the siphon tube 200 which is above the level of the liquid in the reservoir 100 on the one hand and below the highest point of the siphon tube 200 on the other hand. Such as a siphon tube 200 times high point position 7m from the ground. Z4 is the position head of the lowest point of the curved portion 220. X1 is the head of the piezometer tube where the fluid rises above the liquid level in the bend 220. X2 is the head of the piezometer tube where the fluid drops to the level in the bend 220. X3 is the head of the fluid level of the fluid in the reservoir 100. It is conceivable that the fluid enters the curved portion 220 from the protruding portion 230 and finally enters the body portion 210, and the flow direction thereof is first ascending and then descending.
In which there is a pressure drop due to the operating state, which refers to a pressure drop caused by energy loss when fluid flows in the pipe. Therefore, when |P2| -0.5m > |X 3-Z2|, |P3| -0.5m > |X 3-Z2|, then there is air accumulation in siphon 200. In this case, the operation state is stopped and the fluid delivery is stopped. On the one hand, the siphon tube 200 can be pumped at the highest position, and on the other hand, the siphon tube 200 can be filled with fluid through municipal water, so that the accumulated air is discharged. The condition of the fluid in the siphon 200 can be seen with reference to figures 2 to 5.
In particular, since the shut-down state allows the position head to be conveniently detected and the value is fixed, it is possible to subdivide the presence of air accumulation in the siphon 200, whereas in the operating state there is no way to subdivide it due to the pressure drop. However, in the operating state, when the second condition detects the presence of air accumulation in the siphon tube 200, the siphon fluid delivery system may be switched to the stopped state, and then the subdivision detection is performed, so that it is possible to determine what the air accumulation distribution is when the air accumulation exists in the siphon tube 200, and then exhaust for different conditions. For the case of detecting the accumulated air by subdivision, details will not be repeated here, and specific reference may be made to a description of classification detection of the accumulated air in the stopped state. For the case of air accumulation, reference may be made to fig. 2 to 5.
The following introduces an open type ice storage system delivery system which can reduce the occurrence of air accumulation, thereby improving the cold release capacity of the ice storage system. Referring to fig. 6, in some embodiments, an open ice thermal storage system delivery system includes: a water reservoir 100 and a water supply pipe 300. Reservoir 100 is used to store a fluid, which may be water or ice water. The water supply pipe 300 is connected to the water reservoir 100, and the highest position of the water supply pipe 300 is lower than the liquid level of the fluid in the water reservoir 100. Since the highest position of the water supply pipe 300 is lower than the liquid level of the fluid in the reservoir 100, the negative pressure of the siphon tube 200 may be changed to a positive pressure. In other words, since the highest position of the water supply pipe 300 is lower than the liquid level of the fluid in the water reservoir 100, occurrence of the siphon phenomenon can be prevented, thereby effectively reducing occurrence of the air accumulation in the water supply pipe 300. Therefore, the transmission and distribution system of the open ice cold accumulation system can effectively avoid being influenced by vacuum air accumulation, and the cold release capacity of the cold accumulation system is improved.
Furthermore, the water supply pipe 300 of the delivery system of the open ice storage system is arranged at the side of the reservoir 100 to be connected out, the pipeline is arranged at a height below the free liquid level of the pool, the system runs at positive pressure, and the possible accumulated air in the pipeline can be discharged at any time only by arranging an automatic exhaust valve at the high position and the tail end of the pipeline.
In some embodiments, the water supply pipe 300 has a diameter of 1.2 to 1.5m. Specifically, the diameter of the water supply pipe 300 is between 1.2m and 1.5m, so that the flow speed of fluid in the system can be reduced, the flow resistance loss of the suction section of the water pump is reduced, and the suction pressure of the water pump is increased to ensure the safe and stable operation of the pump.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A method of diagnosing a siphonic fluid delivery system for use in a siphonic fluid delivery system, the siphonic fluid delivery system comprising: the siphon comprises a body part, a bending part and an extending part, wherein two ends of the bending part are respectively communicated with the body part and the extending part, the extending part extends into the reservoir, and the branch pipe is communicated with the body part;
the siphon type fluid delivery and distribution system diagnosis method comprises the following steps:
dividing the siphon type fluid conveying and distributing system into a stop state and an operation state;
and detecting the pipe water head under the stop state and the running state respectively so as to judge whether the siphon pipe has air accumulation or not.
2. The method of diagnosing a siphonic fluid delivery system according to claim 1, where when the siphonic fluid delivery system is in the off state, P1 is the head of the pressure tube at the highest point of the siphon, P2 is the head of the pressure tube at the lowest point of the siphon, P3 is the head of the pressure tube at the next highest point of the siphon, Z1 is the head of the highest point of the siphon, Z2 is the head of the lowest point of the siphon, Z3 is the head of the next highest point of the siphon, and X3 is the head of the level of the fluid in the reservoir, wherein when p1=x3-Z1, p2=x3-Z2, p3=x3-Z3, no air is trapped within the siphon.
3. The method of diagnosing a siphon fluid delivery system according to claim 1, wherein when the siphon fluid delivery system is in the stopped state, P1 is a head of a pressure pipe at a highest point of the siphon pipe, Z1 is a head of a position of the highest point of the siphon pipe, X3 is a head of a position of a liquid surface of the fluid in the reservoir, and wherein when P1 > X3-Z1, a part of the air accumulation and a part of the fluid exist in the curved portion.
4. The method according to claim 1, wherein when the siphon fluid distribution system is in the stopped state, P1 is a head of a pressure pipe at a highest point of the siphon, P2 is a head of a pressure pipe at a lowest point of the siphon, P3 is a head of a pressure pipe at a next highest point of the siphon, Z2 is a head of a lowest point of the siphon, Z3 is a head of a next highest point of the siphon, Z4 is a head of a lowest point of the curved portion, X1 is a head of a position of a fluid rising surface in the curved portion, X2 is a head of a position of a fluid falling surface in the curved portion, X3 is a head of a position of a fluid surface in the reservoir, wherein when x1=x3_p1 < Z4, P2 is measured, x2=p2+z2_p1 is further obtained, when x2 > Z3, if p3=p2+z2_z3 is established, the curved portion and the air do not exist in the curved portion.
5. The method according to claim 1, wherein when the siphon fluid distribution system is in the stopped state, P1 is a head of a pressure pipe at a highest point of the siphon, P2 is a head of a pressure pipe at a lowest point of the siphon, P3 is a head of a pressure pipe at a next highest point of the siphon, Z2 is a head of a lowest point of the siphon, Z3 is a head of a next highest point of the siphon, Z4 is a head of a lowest point of the curved portion, X1 is a head of a position of a fluid rising surface in the curved portion, X2 is a head of a position of a fluid falling surface in the curved portion, X3 is a head of a position of a fluid surface in the reservoir, wherein when x1=x3_p1 < Z4, P2 is measured, x2=p2+z2_p1 is further obtained, when x2 < Z3, if p3=p2+z2_z3 is established, the curved portion and the air is present in the curved portion and the air is present near the one end.
6. The method according to claim 1, wherein when the siphon fluid distribution system is in the stopped state, P1 is a head of a pressure pipe at a highest point of the siphon, P2 is a head of a pressure pipe at a lowest point of the siphon, P3 is a head of a pressure pipe at a next highest point of the siphon, Z2 is a head of a lowest point of the siphon, Z3 is a head of a next highest point of the siphon, Z4 is a head of a lowest point of the curved portion, X1 is a head of a position of a fluid rising surface in the curved portion, X2 is a head of a position of a fluid falling surface in the curved portion, X3 is a head of a position of a fluid surface in the reservoir, wherein when x1=x3_p1 < Z4, P2 is measured, x2=p2+z2_p1 is further obtained, when x2 < Z3, if p3 > p2+z2_z3 is established, the volume of the curved portion and the gas are present at both ends of the curved portion and the gas are present.
7. The method of diagnosing a siphonic fluid delivery system according to claim 1, where when the siphonic fluid delivery system is in the operational state, P1 is the head of the pressure tube at the highest point of the siphon tube, P2 is the head of the pressure tube at the lowest point of the siphon tube, P3 is the head of the pressure tube at the next highest point of the siphon tube, Z1 is the head of the highest point of the siphon tube, Z2 is the head of the lowest point of the siphon tube, Z3 is the head of the next highest point of the siphon tube, and X3 is the head of the liquid level of the fluid in the reservoir, wherein when P1 is equal to or less than X3-Z1, P2 is equal to or less than X3-Z2, and P3 is equal to or less than X3-Z3, there is no air accumulation within the siphon tube.
8. The method of claim 7, wherein the protrusion is blocked when |p1| -0.5mj > |x3-z1|.
9. The method of diagnosing a siphon fluid delivery system according to claim 1, wherein when the siphon fluid delivery system is in the operating state, P2 is a head of the pressure pipe at the lowest point of the siphon pipe, P3 is a head of the pressure pipe at the next highest point of the siphon pipe, Z2 is a head of the position of the lowest point of the siphon pipe, and X3 is a head of the position of the liquid surface of the fluid in the reservoir, wherein when |p2| -0.5m > |x3-Z2|, |p3| -0.5m > |x3-Z2|, there is an air accumulation in the siphon pipe.
10. Open ice cold-storage system transmission and distribution system, its characterized in that includes:
a reservoir for storing a fluid;
and the water supply pipe is communicated with the reservoir, and the highest position of the water supply pipe is lower than the liquid level of the fluid in the reservoir.
CN202311026442.9A 2023-08-15 2023-08-15 Siphon type fluid delivery and distribution system diagnosis method and open ice cold accumulation system delivery and distribution system Active CN116734358B (en)

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JP2008190731A (en) * 2007-02-01 2008-08-21 Toyo Netsu Kogyo Kk Cooling water supply and discharge structure of cooling tower and cooling water supply and discharge structure of cooling tower group using it
CN108644158A (en) * 2018-04-09 2018-10-12 中建三局第建设工程有限责任公司 Automatic exhaust siphoning installation
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CN218207259U (en) * 2022-09-20 2023-01-03 浙江友利智能科技有限公司 Self-circulation equipment for maintaining vacuum degree of siphon
CN115854450A (en) * 2023-03-02 2023-03-28 深圳市前海能源科技发展有限公司 Exhaust method and system for open type transmission and distribution system of ice or water cold storage air conditioner of building

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190731A (en) * 2007-02-01 2008-08-21 Toyo Netsu Kogyo Kk Cooling water supply and discharge structure of cooling tower and cooling water supply and discharge structure of cooling tower group using it
CN108644158A (en) * 2018-04-09 2018-10-12 中建三局第建设工程有限责任公司 Automatic exhaust siphoning installation
US20210404167A1 (en) * 2020-05-28 2021-12-30 Legend Energy Advisors Detecting vacuum presure and anomalous cylcing in a vacuum sewer system
CN218207259U (en) * 2022-09-20 2023-01-03 浙江友利智能科技有限公司 Self-circulation equipment for maintaining vacuum degree of siphon
CN115854450A (en) * 2023-03-02 2023-03-28 深圳市前海能源科技发展有限公司 Exhaust method and system for open type transmission and distribution system of ice or water cold storage air conditioner of building

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