WO2017157088A1 - 给水系统及其容器和增压水泵和给水方法 - Google Patents

给水系统及其容器和增压水泵和给水方法 Download PDF

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Publication number
WO2017157088A1
WO2017157088A1 PCT/CN2017/000235 CN2017000235W WO2017157088A1 WO 2017157088 A1 WO2017157088 A1 WO 2017157088A1 CN 2017000235 W CN2017000235 W CN 2017000235W WO 2017157088 A1 WO2017157088 A1 WO 2017157088A1
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WIPO (PCT)
Prior art keywords
water
container
water pump
pressure
pump
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Application number
PCT/CN2017/000235
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English (en)
French (fr)
Chinese (zh)
Inventor
石一用
石连科
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石一用
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Publication date
Application filed by 石一用 filed Critical 石一用
Priority to JP2018548212A priority Critical patent/JP6684360B2/ja
Publication of WO2017157088A1 publication Critical patent/WO2017157088A1/zh
Priority to US16/133,695 priority patent/US20190010681A1/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00—Arrangements or adaptations of tanks for water supply
    • E03B11/02—Arrangements or adaptations of tanks for water supply for domestic or like local water supply
    • E03B11/06—Arrangements or adaptations of tanks for water supply for domestic or like local water supply with air regulators
    • E03B11/08—Air regulators
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00—Arrangements or adaptations of tanks for water supply
    • E03B11/02—Arrangements or adaptations of tanks for water supply for domestic or like local water supply
    • E03B11/06—Arrangements or adaptations of tanks for water supply for domestic or like local water supply with air regulators
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00—Arrangements or adaptations of tanks for water supply
    • E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/075—Arrangement of devices for control of pressure or flow rate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

Definitions

  • the present invention relates to the field of water supply, and more particularly to a water supply system and its container and a pressurized water pump and water supply method.
  • No negative pressure or laminating water supply equipment refers to the water supply technology directly connected to the water supply network in series; the tank type non-negative pressure water supply equipment is briefly described between the inlet main pipe and the water main pipe, and there is no negative pressure water supply equipment.
  • a water tank is also connected in parallel, which is characterized by an increase in water storage.
  • CN2437746 discloses a pressurized water supply device for installing an open or closed sealing valve on a water storage container
  • CN2438751 discloses an increase of "bubbling, floating ball or stainless steel ball for controlling the inlet and outlet of the vacuum suppressor" Pressure stabilized water supply equipment.
  • CJ/T254-2014 proposes “limited pressure” to further ensure the pressure on the inlet pipe network.
  • the water supply equipment should be oriented towards increasing the water supply rate of the water system and adapting to the pressure and quantity of water provided by the inlet pipe network.
  • the tank type non-negative pressure water supply equipment Since the tank type non-negative pressure water supply equipment has a large amount of stored water, it can still adapt to the operating conditions of the municipal pipe network when the water supply system is guaranteed. However, since the water volume in the water tank is at a normal pressure state, there is a large pressure difference with the water inlet pressure: and the storage time of the water in the water tank is also random due to the water consumption, which makes the equipment control too complicated and partially lost. No negative pressure.
  • the invention is an improvement of the box type non-negative pressure water supply technology, and aims to provide the same function as the box type non-negative pressure water supply device, but the connection between the inlet water, the water storage and the water supply is simple, and the operation parameters are continuous. Water supply system and its container and booster pump and water supply method.
  • the technical solution adopted for achieving the object of the present invention is: a water supply system comprising a first inlet pipe, an intake valve, a container, a first water pump, and a water pipe; an intake valve is provided in the first inlet pipe, and the container is connected Between the first inlet pipe and the suction pipe of the first water pump, the water pipe of the first water pump is connected with a water pipe; the container is a gas pressure water tank, characterized in that the amount of gas compressed in the container is equal to the vacuum of the intake valve The amount of air inhaled.
  • the gas compressed in the container may be air that destroys vacuum; it may also be other clean gas, such as filtered air or nitrogen.
  • the intake valve is disposed at a relatively low point of the static pressure of the first inlet pipe and can be repeatedly set.
  • the first inlet pipe is provided with a throttle tube or a throttle plate between the intake valve and the container.
  • the intake valve can also be an intake and exhaust valve; however, other facilities that can be inflated when atmospheric pressure is reached, such as a vacuum breaker, are not excluded.
  • the container stores the amount of water including the sum of the amount of water stored in the container and the inlet pipe after the intake valve.
  • a container connected between a first water inlet pipe and a first water pump, wherein the container is a gas pressure water tank, and is provided with a first water level and a second water level, wherein the first water level corresponds to atmospheric pressure, or At normal pressure, the second water level corresponds to the first inlet water pressure.
  • the container is pneumatically stored, that is, the amount of water stored corresponds to a certain pressure.
  • the container connected between the first inlet pipe and the first water pump, or a pressure water tank or an atmospheric water tank, that is, the amount of compressed gas in the container only keeps a part of the stored water at normal pressure or constant Above the pressure;
  • the container is provided with a minimum water level and a first water level, characterized in that: the first water level corresponds to atmospheric pressure, and the lowest water level is lower than the first water level.
  • the container is connected to the atmosphere at the first water level so that the amount of water other than the air pressure storage water does not generate a negative pressure when it is taken.
  • the stored water amount between the lowest water level and the first water level is equivalent to the water storage amount of the water tank in the tank type non-negative pressure water supply device.
  • the first water level is determined by the amount of gas compressed within the vessel.
  • the connecting to the atmosphere is to start the intake valve at the intake valve provided in the first inlet pipe; and the intake and exhaust valves may be provided at the first water level.
  • the above-mentioned atmosphere can also be connected to other clean gases.
  • a container is connected between the first inlet pipe and the first water pump, and is also a pressure water tank or an atmospheric water tank, and is characterized in that a vortex prevention facility is provided at the water outlet of the container.
  • the pneumatic water tank is also an atmospheric water tank, and further comprises a pressurized water tank: a pressure storage water tank, the interface between the gas and the water is a direct contact water storage container, wherein the container is connected to the water pump; It includes a buffer tank or a compensation tank in a prior art non-negative water supply equipment.
  • the effect of the pressure water tank or the container of the atmospheric water tank is that the normal pressure water storage water is in a sealed state when it is not in use or when it is not used, thereby ensuring hygiene and safety.
  • the idea of putting together air pressure storage and atmospheric pressure storage also produces a consistent effect of the amount of stored water and its use pressure.
  • the water supply system of the present invention is a container for a gas pressure water tank including such a gas pressure water tank or an atmospheric pressure water tank; a container having both a gas pressure water storage capacity and a normal pressure water storage water volume.
  • the container with the second water level may further be provided with a third water level, characterized in that: the third water level Higher than the second water level; the second water level corresponds to the pressure of the first water pump suction pipe, and the third water level corresponds to the pressure of the first water pump outlet pipe.
  • a booster water pump includes a first water pump, a water suction pipe connecting container of the first water pump, and a water pipe for connecting the water outlet pipe of the first water pump, characterized in that: the second water pump is further included, and the second water pump is connected in parallel with the first water pump suction pipe .
  • the second water pump is connected in parallel with the first water pump suction pipe.
  • the second water pump is connected in series with the first water pump, and the second water pump may also be connected in parallel with the first water pump outlet pipe.
  • the first water pump or the second water pump may be a water pump or a set of pumps connected in parallel or in series.
  • the booster pump is provided with a first line, a second line, and a third line.
  • a third pipeline is arranged in the suction pipe of the booster pump, and a second pipeline is arranged in the pipeline connecting the second pump to the first water pump; the third pipeline is connected to the second inlet pipe, and the second pipeline is connected container.
  • the first pipeline is provided with a first valve
  • the second pipeline is provided with a second valve
  • the third pipeline is provided with a third valve; the first pipeline, the second pipeline and the third pipeline are connected to the vessel.
  • the second conduit and the third conduit are connected to the second inlet pipe.
  • the first pipeline is provided in the outlet pipe of the booster pump, characterized in that the first pipeline is connected to the vessel.
  • the role of the pressure water tank, the first is to maintain pressure, can make the booster pump stop when idle or the flow is too small; the second is when the water consumption of the water pipe is drastically changed, it can supplement or balance the sudden change of flow, stable
  • the operating state of a water pump The characteristics of the sudden change of the flow rate are small when the flow rate is large, and the influence is small; when the flow rate is small, the relative amplitude is large and the influence is large.
  • the container connected to the suction pipe of the booster water pump When the container is connected to the suction pipe of the booster water pump, the water level in the container is low, indicating that the resistance of the total inlet pipe or the water pipe is large, and the flow rate is large; when the container is connected to the water outlet pipe of the water pump, the water inlet pipe or the water pipe is used. The resistance is small and the flow is small. According to such a feature, the container connected to the suction pipe end of the booster pump can also be changed to the pressure water tank at the outlet end of the booster pump.
  • the second water pump may further include a third water pump, and the third water pump is connected in parallel with the second water pump suction pipe.
  • the third water pump can also be connected in parallel with the first water pump outlet pipe or the second water pump outlet pipe.
  • the third water pump is a copy on the basis of the second water pump.
  • the effect of the booster water pump is that the water supply system can be diversified: the first valve is opened, and the first water pump and the container are non-regulated type non-negative pressure water supply equipment, corresponding to The head of the first water pump; the second valve is opened, which is a tank type non-negative pressure water supply device composed of a first water pump and a container, which increases the access to the water storage capacity; continuously opens the first valve and the second valve,
  • the utility model relates to a non-regulating device type non-negative pressure water supply device composed of a second water pump and a container, corresponding to the head of the second water pump; the first valve and the third valve are opened, which is a direct supply system. This versatile mode of operation is used in direct supply systems to increase the significance of energy savings.
  • One of the advantages of no negative pressure is the use of a closed water storage method.
  • the present invention utilizes the existing vacuum destruction technique in the pipeline, and the method employed is one of the features of the present invention; the vessel in the water supply system employs a pressurized water tank to store and compress the gas that destroys the vacuum.
  • the amount of gas that destroys the vacuum is random due to the difference in the amount of water taken.
  • the air once inhaled in the container can cause no negative pressure to be generated the next time the water consumption is reached; the air consumed by the dissolution, the vortex, or the increased water consumption will cause the vacuum to be broken.
  • the valve is again inhaled.
  • the fact that the amount of gas compressed in the container is equal to the amount of air that is destroyed by vacuum inhalation embodies this feature.
  • the present invention recommends storing and compressing the air that is inhaled by the vacuum.
  • the air that invades the vacuum inhalation is the gas that has entered the water supply system and should be considered for hygiene when taking measures to break the vacuum; however, other methods are not excluded. If other clean gases are used, it is also possible to connect the intake valve or the container.
  • the pressure of the barometric water storage is continuously reduced to normal pressure; when the protection inlet pipe is not lower than the defined pressure, a throttling device should be provided in the inlet pipe for throttling Before the device keeps the water pressure above the defined pressure, after the throttling device, the system pressure will decrease due to the need to take the closed water storage to ensure the water volume of the water pipe, and when the negative pressure is reduced, the vacuum is broken.
  • the valve will be inflated.
  • the first inlet pipe adopts a throttling measure between the intake valve and the container to facilitate the stabilization of the state of the intake valve.
  • the advantage of a pressurized water tank is that the amount of water corresponding to the compressed gas provides a stable process for the system to change pressure; its adverse effect is that the compressed gas occupies a portion of the volume in the vessel.
  • the ratio of the total volume of the container in which the amount of water stored by the method of the present invention is used can be calculated. If the defined pressure is 0.1 MPa, the stored water accounts for 50%; if it is 0.2 MPa, the stored water accounts for 67%; compared with the general pressure tank, the storage water efficiency has been improved. The volume outside the ratio is gas occupancy, and this volume can be further reduced.
  • the second feature of the present invention is to put together the water storage capacity of the water tank in the tank-type non-negative pressure water supply device and the air pressure water storage amount generated by the gas corresponding to the compression and destruction vacuum. This is equivalent to increasing the volume of stored water for normal pressure in the pressure water tank of the feature one.
  • This centralized storage of water not only solves the problem of water storage time in the container, but also makes the normal pressure water volume become closed storage, sanitation and reduce the control link in the operation of the equipment; while the concentrated water volume continuously changes during the operation, which is more beneficial. In order to stabilize the operation of the equipment, a series of beneficial effects have been produced.
  • the amount of water stored between the second water level and the first water level in the vessel is to maintain continuity of the water pressure.
  • the amount of stored water between the second water level and the lowest water level in the container is the total amount of stored water required to meet the water pipe.
  • the first water inlet pipe and the container for storing the amount of water of the present invention are equivalent to changing the shape of the prior art steady flow tank or compensation tank, and the effect is that, firstly, when the container is opposite to the first one When the high point difference of the water pipe is low, the influence of the "no negative pressure" of the container on the negative pressure generated by the high point of the first inlet pipe is eliminated, and the first inlet pipe is added.
  • the amount of water stored is a disadvantage.
  • the method extends the application of the concept that the air pressure exerts a corresponding pressure on the interfacially connected water, that is, the compressed gas keeps the pressure of the stored water continuously decreasing, and the total amount of the gas maintains a part of the stored water.
  • the prior art has carried out more research on the vortex phenomenon of the water outlet under normal pressure; a practical anti-vortex plate or a preventer cyclone is used in the water tank (or pool) to reduce the height difference between the water outlet and the lowest water surface, Increased effective water depth has not been seen in applications without negative pressure water supply equipment.
  • a practical anti-vortex plate or a preventer cyclone is used in the water tank (or pool) to reduce the height difference between the water outlet and the lowest water surface, Increased effective water depth has not been seen in applications without negative pressure water supply equipment.
  • one of the characteristics of the non-negative pressure water supply device is that the container is connected to the water pump, and the inclusion of gas in the water causes cavitation damage to the water pump. Therefore, according to the phenomenon reflected in Article 3.4.13 of GB50015-2003 (2009 edition), the present invention proposes a measure for installing an anti-vortex facility in a pneumatic water tank in which the interface between gas and water is in direct contact.
  • the pneumatic water tank includes
  • the vortex prevention device may be a horizontal circular baffle disposed above the water outlet of the container; the water flow velocity passing through the circular baffle section is lower than the water flow velocity of the water suction port. Below the circular baffle, a riser in the direction of the water flow may be provided between the container wall and the container wall.
  • the container needs to adopt a vacuum or air intake method when the first water level is used; when the storage water quantity between the first water level and the lowest water level is supplemented, the container needs to adopt the row.
  • Gas measures The measures used to destroy the vacuum or intake air in the container may be above or below the first water level.
  • the venting measures of the container correspond to the first water level, and self-control measures can also be used, such as using signals to control the opening or closing of the vent valve.
  • the first inlet pipe should be connected to the first water level.
  • the first inlet pipe has a function of qi when the vacuum is broken, but the direction of the water is opposite to that of the inlet.
  • the water level corresponding to the highest pressure of the inlet pipe has the highest water level.
  • the highest water level is above the second water level, and the amount of stored water between the highest water level and the second water level is the difference between the first inlet pipe and the water pipe when the first inlet pipe is still above the defined pressure, but the pressure has decreased.
  • the function is to reduce the amount of water entering when the pressure of the first inlet pipe or the municipal pipe network is reduced, which is beneficial to maintaining the pressure of the inlet pipe or the city network.
  • the second water level also corresponds to the pressure of the suction pump suction pipe.
  • utilizing the compressed gas in the container that is, the second feature of the present invention, further includes providing a third water level in the container, the third water level corresponding to the pressure of the pressurized water pump outlet pipe. It is equivalent to putting the amount of water in the pressure water tank of the variable frequency water pump. In this way, only one or a group of containers is provided in the system, but the problem is that the container is connected to the suction pump suction pipe and the boost water pump outlet pipe, so It is necessary for the container to connect different pipes according to the pressure change staggering period.
  • the starting water level corresponds to a lower pressure of the booster water pump outlet pipe required due to the reduced pipe resistance when the water consumption of the water pipe system is small.
  • direct supply can be used at this time.
  • the present invention can also promote the full utilization of the total inlet pipe or the municipal pipe network water. Pressure.
  • the water level between the starting water level and the highest water level or the second water level can reduce the booster pump head, but also limit the inlet water inlet.
  • a mode of operation of a booster pump the second line of the booster pump being connected to the container. Due to the first pressurization of the second water inlet pipe by the second water pump, the pressure in the container is increased, thereby increasing the amount of stored water in the container while continuously feeding the water into the second inlet pipe; The water inflow of the second inlet pipe is used more frequently during the low water use period, and is used less during the peak period of water use, which plays the role of the wrong peak and flat valley.
  • the container of the present invention includes a method of storing water in a gas pressure in a normal pressure water storage amount, so that the pressure of the second inlet pipe can be fully utilized, which is energy-saving; and the method of storing water in the air pressure includes the amount of water stored at atmospheric pressure,
  • One of the advantages is that the amount of compressed air is reduced and the storage volume is increased.
  • the second advantage is that it has a hygienic significance for the normal pressure water storage; the atmospheric pressure storage and the atmospheric pressure storage together put away the concerns about the water cycle. .
  • the pressure in the container changes continuously, which is beneficial to the operation of the stable water pump.
  • the excessive pressure change range will reduce the operating efficiency of the pump due to the excessive speed ratio range.
  • a series of booster pumps is also energy efficient.
  • the difficulty with using a series of booster pumps is how to use effective control.
  • the third feature of the invention when the container is connected to the first pipeline or the third pipeline of the booster water pump, the first water pump is controlled by the constant pressure of the first water pump outlet pipe, and the second water pump is controlled by the second water pump outlet pipe constant pressure. . Further, the second water pump can be operated not lower than the set frequency; when the pressure of the second water pump outlet pipe is higher than a certain set value, the second water pump is taken out of operation.
  • the fourth feature of the present invention when the container is connected to the second pipeline of the booster water pump, the first water pump is still controlled according to the outlet water pressure, and the second water pump is set according to the pressure of the second water pump outlet pipe to set a frequency conversion range of a certain width, and then According to the pressure of the suction pipe of the second water pump, according to the low pressure of the suction pipe of the second water pump, a lower frequency is selected within the frequency conversion range of the certain width, and the pressure is selected. Force high selects a higher frequency to run.
  • the second water pump is operated according to the pressure of the balance container, and the pressure of the second water inlet pipe is combined with the flow rate of the second water pump, and the flow rate of the second water pump is small when the pressure is low.
  • the fourth feature is a water pump control method, which sets a frequency conversion range according to the first parameter point, and determines a specific frequency conversion frequency according to the second parameter point; the frequency conversion range is according to the characteristic curve of the water pump, Coordinate traffic and heads.
  • Article 5.0.6 of CECS 211-2012 stipulates that the water volume of the steady flow tank is not less than the design flow rate of 1 minute, and this volume is equal to the 5.4.3.1 of CJ/T 254-2014; less than GB 50015-2003 (2009 edition) Article 3.7.4
  • the volume of the pump suction well (3 minutes). Because the vacuum suppressor is turned on, the peak value of water is used, and the pump is running at the design flow rate. The probability of these factors complementing each other is high, so it is especially necessary to use anti-vortex measures in the container.
  • Article 5.0.6 of CECS 211-2012 stipulates that the tank-type non-negative pressure tank volume should be 1 hour - 2 hours maximum hour flow; close to GB 50015-2003 (2009 edition) Article 3.7.2 or 3.7.3 The water regulation amount or effective volume (20% of daily water consumption can be approximated as the maximum hourly flow rate of 2 hours).
  • the applicant of the present invention has tracked a plurality of cases using water tanks in areas where the application of the non-negative pressure water supply equipment is better, and found that the safe water storage capacity is too large. So that it may be related to such a phenomenon, the requirements of Article 5.1.13 of GB 50974-2014, in the previous GB 50015-2003 (2009 edition) Article 3.8.6 is not taken seriously, one of which is typical, using side walls There are no measures for the outlet tank.
  • Figure 1 is a water supply system.
  • Figure 2 is a water supply system of the present invention.
  • Figure 3 is a graphical representation of the water level of the container of the present invention.
  • Figure 4 is a container with a vortex prevention facility.
  • 5 to 7 are views showing the connection line of the booster water pump of the present invention.
  • a water supply system consisting of a first inlet pipe 2, an intake valve 1, a container 3, a first water pump 4, and a water pipe 5.
  • the second inlet pipe 6 and the second water pump 10 are further included; the first valve 7, the second valve 8, and the third valve 9 are further included; and the total inlet pipe 11 and the pipe 12 connecting the containers 3 are further included.
  • the first inlet pipe 2 and the second inlet pipe 6 are connected to the main inlet pipe 11; the first inlet pipe 2 and the second inlet pipe 6 are each provided with an opening and closing valve.
  • An intake valve 1 is provided at a high point of the main inlet pipe 11 or the first inlet pipe 2 or the second inlet pipe 6; and an intake valve is provided in front of the backflow prevention device, the intake valve makes the total inlet pipe 11 does not produce negative pressure.
  • the first inlet pipe 2 is connected to the container 3, and the container 3 is connected to the suction pipe of the first water pump 4, and the water pipe 5 for the outlet pipe of the first water pump 4.
  • the incoming water enters the container 3 through the total inlet pipe 11 and the first inlet pipe 2, and the water in the container 3 is pressurized by the first water pump 4 to supply the water pipe 5.
  • the container 3 When the water pressure of the total inlet pipe 11 is lowered, it indicates that the pipeline connected to the main inlet pipe 11 or the municipal pipe network has a large flow rate, and the resistance increases, which is reflected in the decrease in the water pressure of the total inlet pipe 11, and the container 3 is accordingly lowered accordingly.
  • the pressure, the gas in the container 3 is expanded, the water storage amount is reduced, and the reduced water storage amount is supplemented by the water consumption of the water pipe 5, and the effect is to reduce the water inflow, reduce the flow rate of the municipal pipe network, reduce the resistance, and maintain the water inlet pressure.
  • the total inlet pipe 11 stops entering the water when corresponding to the defined pressure, and the water level in the vessel 3 corresponds to the second water level.
  • the water storage amount from the second water level to the first water level in the container 3 continuously replenishes the water consumption amount of the water pipe 5, and as the gas in the container 3 expands, the pressure continuously decreases until the intake valve 1 provided in the first water inlet pipe 2 is introduced. If the minimum water level is also provided in the container, the intake air is replenished to the container 3, and the water storage amount from the first water level to the lowest water level in the container 3 continuously replenishes the water consumption amount of the water pipe 5. It is equivalent to the tank-type non-negative pressure water supply equipment in the water tank.
  • the second inlet pipe 6 can be closed: when the water level in the container 3 is below the second water level, the third valve 9 can also be opened, and the container 3 is connected.
  • the suction pipe of a water pump is also connected to the suction pipe of the second water pump 10, and the water supply head can be increased at any time.
  • the first inlet pipe 2 When the water pressure of the total inlet pipe 11 is high, the amount of water is sufficient, and when the container 3 corresponds to the highest water level, the first inlet pipe 2 can be closed, the second inlet pipe 6 is connected to the suction pipe of the first water pump 4, and the first valve can be opened. 7.
  • the container 3 is connected to the outlet pipe of the first water pump 4, at which time the container 3 is used as a pneumatic water tank of the first water pump 4. It is equivalent to a non-regulating device without negative pressure water supply equipment.
  • Figure 2 is a water supply system of the present invention in the form of a basic water supply system.
  • the first inlet pipe 2, the intake valve 1, the container 3, the first water pump 4, and the water pipe 5 in Fig. 1 are included. Also included is a pneumatic water tank 13 of the first water pump 4.
  • the function of the pressure water tank 13 is to maintain the pressure of the first water pump 4 when it is idle or when the flow rate is too small; the second is to supplement or balance the drastic flow when the water consumption of the water pipe 5 is drastically changed. , stabilize the operating state of the first water pump.
  • the characteristic of the sudden change of the flow rate is small when the flow rate is large, and the influence is small: when the flow rate is small, the relative amplitude is large and the influence is large.
  • Figure 3 is a graphical representation of the water level in the container 3 of the present invention.
  • a first water level 101 and a second water level 102 are provided.
  • the first water inlet pipe 2 is connected, and an exhaust valve 14 is also provided.
  • the container 3 is also provided with an outlet pipe 17.
  • a minimum water level 104 is also provided below the first water level 101;
  • a third water level 103 is also provided above the second water level 102.
  • the first water level 101 corresponds to a normal pressure
  • the second water level 102 corresponds to a defined pressure of the first water inlet pipe 2
  • the highest water level 105 corresponds to a highest pressure of the first water inlet pipe 2
  • the starting water level 106 corresponds to a minimum water supply pressure of the water pipe, That is, the pressure of the booster pump is started;
  • the second water level also corresponds to the inlet pipe pressure of the booster pump, and
  • the third water level 103 corresponds to the outlet pipe pressure of the booster pump.
  • the highest water level 105 is the water level at which the flow rate of the water inlet network is reduced and the resistance is lowered.
  • Corresponding to the starting water level 106 is the water level when the flow rate of the water pipe network is reduced and the resistance is lowered. When the highest water level 105 is higher than the starting water level 106, or even higher than the third water level 103, the water supply can be directly supplied.
  • the first inlet pipe 2 be connected to the height of the first water level 101; the first inlet pipe 2 may also be connected above or below the height of the first water level 101. If the first water inlet pipe 2 is connected above the highest water level 105, when the actual water level is higher than the highest water level 105, the first water inlet pipe 2 is closed according to the foregoing, and when the actual water level is lower than the highest water level 105, the first water inlet pipe 2 is connected to the gas in the container 3, and after the water supply department agrees, the backflow preventer provided in the total inlet pipe 11 can be eliminated to reduce the pipe resistance and make full use of the water inlet pressure.
  • the purpose of repeatedly setting the exhaust valve 15 and the exhaust valve 16 is to adjust the amount of gas compressed in the container, that is, to adjust the set height of the first water level A1, such as opening the valve of the exhaust valve 15, which is equivalent to reducing the amount of compressed air. Opening the valve of the exhaust valve 16 is equivalent to increasing the amount of compressed air.
  • the container of the present invention can also adjust the amount of water stored therein relative to the determined volume.
  • the exhaust valve 14, the exhaust valve 15, and the exhaust valve 16 are of the prior art, and may be an intake and exhaust valve.
  • Fig. 4 is a container, which is a pneumatic water tank or an atmospheric water tank, characterized in that a vortex prevention device 18 is provided in a container connecting the water outlet pipe 17.
  • FIG. 5 is a first illustration of the pressurized water pump connection line of the present invention.
  • the water pump 10 and the pipeline connected in parallel with the second water pump 10 are provided with a check valve 21 which is a spanning pipe of the second water pump 10; the second water pump 10 can also be connected in parallel with the water outlet pipe 20 of the first water pump 4.
  • Figure 6 is a second illustration of the pressurized water pump connection line of the present invention.
  • the first line 22 is connected to the outlet pipe 20 of the first water pump 4, and the first line 22 is provided with a first valve 7.
  • the second line 23 connects the suction pipe 19 of the first water pump 4 to the outlet pipe side of the second water pump 10, and the second line 23 is provided with the second valve 8.
  • the third line 24 is connected to the suction pipe of the second water pump 10, and the third line 24 is provided with a third valve 9.
  • the first line 22, the second line 23, and the third line 24 are connected to the line 12.
  • the check valve 21 is provided in the spanning pipe of the second water pump 10.
  • FIG. 7 is a third illustration of the pressurized water pump connection line of the present invention.
  • the third water pump 27 can also be connected in parallel to the suction pipe of the second water pump 10.
  • the first line 22, the second line 23, the third line 24 and the line 26 can also be provided in the pressure section of the connecting line.
  • the second water pump 10 is connected to the water outlet pipe 20 of the first water pump 4, or the third water pump 27 is connected to the water outlet pipe 20 of the first water pump 4 or the water outlet pipe of the second water pump 10, etc. It is possible for professionals to follow the above ideas, so they are not indicated one by one.
  • FIG 8 is a first illustration for analyzing the present invention. It can be seen that the water storage volume of the present invention consisting of the first inlet pipe 2 and the vessel 3 forms two system high points; more than two system high points can be formed. In the direction of the water flow, the intake valve 1 is provided at the high point of the first system; the other system high points form the volume of the stored and compressed gas. When the amount of water stored in the container is taken, the air is taken in from the intake valve 1; when it is filled with water below the first water level, it is exhausted from the exhaust valve 14.
  • the intake valve 1 can also use an intake and exhaust valve to eliminate the gas generated in the pipeline that is not under the vacuum; the exhaust valve 14 can also use the intake and exhaust valves to supplement the first The amount of intake air when storing water below the water level.
  • the system high point is the relative low point of static pressure, or gas accumulation.
  • the other system high points can also be connected to the pipeline to balance the water level of the first water level.
  • Figure 9 is a diagram second for analyzing the present invention. Since the pressure of the container 3 corresponds to the water pressure of the first inlet pipe 2, when the exhaust valve 14 is exhausted or the compressed gas increases the pressure in the container 3, the first inlet pipe 3 is in the inflow state, the water flow and the exhaust gas The opposite direction. However, in the static state, when the first inlet pipe 2 is connected to the gas gathering place in the container 3, gas blocking measures should be taken. Alternatively, the intake valve 1 cannot have a venting function, or a gas damper 28 can be taken outside the container, or a gas damaging measure 29 can be taken in the container.
  • the water supply system of the present invention and its container and booster water pump are essential embodiments of the present invention, and any of the modifications described in the water supply method are within the scope of the present invention.
PCT/CN2017/000235 2016-03-18 2017-03-17 给水系统及其容器和增压水泵和给水方法 WO2017157088A1 (zh)

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