For energy-conservation high-floor feedwater system and the energy saving water supply method thereof of secondary pressurized
Technical field
The invention belongs to high-floor feedwater field, particularly a kind of energy-conservation high-floor feedwater system and energy saving water supply method thereof for secondary pressurized.
Background technology
Current highrise building is all over the world more and more, also more and more extensive to the demand of secondary water-supply.The comparatively leading second pressure water supply mode of present stage technology is box type negative-pressure-free water system, the feature of this water system is first municipal water to be let out in water tank, supplies water afterwards by flow control valve or a flow matches device based on threeway to secondary pressurized main pump.For reaching pressure coupling, between water tank and threeway, conventionally also need a little pump or auxiliary pump so that the water of water tank reaches the pressure of municipal water.The shortcoming of this water system is stability deficiency, and energy-saving effect is not obvious, not only not energy-conservation power consumption on the contrary under large flow water supply condition.
The patent No. is to disclose a kind of adjustable ratio jet device in the Chinese patent of CN2177115Y, this invention has solved ejector itself can not enter ejector mixing chamber and the problem that is inhaled into fluid by regulation and control, its solution is, at nozzle place, water sealing slice is set, can regulation and control be inhaled into fluid by turning handle and enter the flow of mixing chamber, thereby regulate the ratio of pipe network inflow and water tank water intake amount.But it still exists technical deficiency to show: water sealing slice is arranged on jet expansion and causes flow losses excessive, has seriously reduced the flow velocity of pipe network water at jet expansion, the pressure of pipe network water is not made full use of.
The patent No. is to disclose the box non-negative pressure method of water supply device of a kind of compensation in the Chinese patent of CN 202157370 U, this invention arranges a compensation tank, supplies water by compensation tank and main pump pipeline simultaneously, improves compensation ability, improve roof tank water quality, reduce municipal ductwork pressure fluctuation.But it also has very large deficiency in energy saving, shows: main line water and compensation water are realized mixing by compensated pump not only there is no energy-conservation this power consumption link of compensated pump that also increased; In addition, there is no gas type accumulator on its compensation tank, city planting ductwork water becomes normal pressure after entering compensation tank, does not make full use of potential energy and the kinetic energy of city planting ductwork water.
In sum, can be found out by the problems referred to above, the major defect that existing second pressure water supply equipment exists is not have efficient energy recycle device, energy consumption cannot accomplish that greatly energy-conserving and environment-protective, stability deficiency and safety need further to improve.
Summary of the invention
The invention provides a kind of energy-conservation high-floor feedwater system and energy saving water supply method thereof for secondary pressurized, comprise that the described energy-conservation high-floor feedwater system for secondary pressurized includes valve, main water inlet tube, main current flow quantity sensor, main flow pressure sensor, threeway, injector, auxiliary pressure sensor, water pump, the first one way valve, with the control cabinet of controller, virtual high level cistern, the second one way valve, the first electric control valve, the second electric control valve, auxiliary flow sensor, vacuum tank and user pipe interconnect, by the improvement to ejector structure and use virtual high level cistern technology, and in conjunction with its energy saving water supply method under the prerequisite without any need for energy input, greatly improve the energy recovery rate of city planting ductwork water, reduce the power consumption of main pump 10-35%, save energy, can also further improve stability and the safety of water supply, energy-conserving and environment-protective are truly accomplished.
For achieving the above object, technical scheme of the present invention is:
For an energy-conservation high-floor feedwater system for secondary pressurized, the described energy-conservation high-floor feedwater system for secondary pressurized includes valve 2, main water inlet tube 3, main current flow quantity sensor 4, main flow pressure sensor 5, threeway 6, injector 7, auxiliary pressure sensor 8, water pump 9, the first one way valve 10, with the control cabinet 11 of controller, virtual high level cistern 12, the second one way valve 16, the first electric control valve 17, the second electric control valve 18, auxiliary flow sensor 19, vacuum tank 21 and user pipe 22, main water inlet tube 3 connects access city planting ductwork 1 by valve 2, on main water inlet tube 3, be provided with main current flow quantity sensor 4 and main flow pressure sensor 5, the left end of the delivery port connecting tee 6 of main water inlet tube 3, the right-hand member of threeway 6 connects the playpipe of injector 7, the upper end of threeway 6 is connected the water inlet 23 of virtual high level cistern 12 with the pipeline of the second one way valve 16 by being provided with the first electric control valve 17, the delivery port 24 of virtual high level cistern 12 is connected the induction tunnel of injector 7 with the pipeline of the second electric control valve 18 by being provided with auxiliary flow sensor 19, injector 7 is connected with water pump 9 by the pipeline that is provided with auxiliary pressure sensor 8, water pump 9 connects user pipe 22 by the pipeline that is provided with the first one way valve 10, on the pipeline between the first one way valve 10 and user pipe 22, vacuum tank 21 is housed, described main current flow quantity sensor 4, main flow pressure sensor 5, auxiliary pressure sensor 8, water pump 9, the first electric control valve 17, the second electric control valve 18 and auxiliary flow sensor 19 are all connected with the controller in control cabinet 11, main current flow quantity sensor 4 is used for measuring the flow of main water inlet tube 3, main flow pressure sensor 5 is used for measuring the pressure of main water inlet tube 3, auxiliary pressure sensor 8 is used for measuring pressure before the pump of water pump 9, and auxiliary flow sensor 19 is used for measuring the flow of the injection current that injector 7 derives, virtual high level cistern (12) comprises gas type accumulator (14), and gas type accumulator (14) stores pressure-air accumulation of energy, and pressure and the energy of flow of the current of city planting ductwork (1) can be stored by gas type accumulator (14) in virtual high level cistern.
Described virtual high level cistern 12 comprises box or pot type water tank 111, liquid level sensor 13, gas type accumulator 14, pressure sensor 15, blowoff valve 20 for virtual high level cistern, the water inlet 23 of virtual high level cistern 12, the delivery port 24 of virtual high level cistern 12;
Wherein liquid level sensor 13, gas type accumulator 14 and virtual high level cistern are arranged on water tank 111 with pressure sensor 15, liquid level sensor 13 is used for measuring the liquid level in water tank 111, gas type accumulator 14 is used for storing the pressure and the energy of flow that flow into the water in water tank 111, virtual high level cistern is used for measuring the pressure in water tank 111 with pressure sensor 15, blowoff valve 20 is arranged on the lower end of water tank 111, the water inlet 23 of virtual high level cistern 12 is arranged on the side of water tank 111, the delivery port 24 of virtual high level cistern 12 is arranged on the lower end of water tank 111.
Described injector 7 comprises playpipe 25, mixing machine 26, and induction tunnel 27, collapsible tube 28, changeover portion 29 and diffuser pipe 30, described playpipe 25 stretches into into the left end of mixing machine 26, and the right-hand member contraction section of playpipe 25 stretches into into the left end of collapsible tube 28; The upper end of mixing machine 26 connects induction tunnel 27, and the right-hand member of mixing machine 26 connects the bigger diameter end of collapsible tube 28; The miner diameter end of collapsible tube 28 is connected with changeover portion 29 left ends, and the right-hand member of changeover portion 29 is connected with the miner diameter end of diffuser pipe 30; The axis conllinear of playpipe 25, collapsible tube 28, changeover portion 29 and diffuser pipe 30.
The left end of described playpipe 25 is pipe, and the right-hand member of playpipe 25 is shrinkage type Taper Pipe; Collapsible tube 28 is shrinkage type conical tube, and changeover portion 29 is pipe, and the pipe diameter of changeover portion 29 is identical with the miner diameter end diameter of collapsible tube 28 and diffuser pipe 30; The left end of diffuser pipe 30 is expanding conical tube, and the right-hand member of diffuser pipe 30 is pipe.
The energy saving water supply method of the described energy-conservation high-floor feedwater system for secondary pressurized is the water supply volume when user pipe 22 when little, detects that by main current flow quantity sensor 4 discharge of main water inlet tube is Q
1and Q
1while being less than setting value Q, the controller in control cabinet 11 just controls the second electric control valve 18 being connected with injector 7 and cuts out, and makes water supply volume all from the playpipe 25 of injector 7, comes so steadily to supply water, in the time that user's water supply volume is large, detect that by main current flow quantity sensor 4 discharge of main water inlet tube 3 is Q
2and Q
2while being greater than setting value Q, the second electric control valve 18 that the controller control in control cabinet is connected with injector 7 is opened, and according to Q
2with controller control in difference control cabinet between Q arranges the flow value that the aperture of the second electric control valve 18 detects auxiliary flow sensor 19 and reaches (Q
2-Q) * 120%, if the flow value that auxiliary flow sensor 19 detects is greater than (Q
2-Q) aperture of controller control the second electric control valve 18 in * 120% item control cabinet diminishes until the flow value that auxiliary flow sensor 19 detects reaches (Q
2-Q) * 120%, if the flow value that auxiliary flow sensor 19 detects is less than (Q
2-Q) aperture of controller control the second electric control valve 18 in * 120% item control cabinet becomes large until the flow value that auxiliary flow sensor 19 detects reaches (Q
2-Q) * 120%, the water in virtual like this high level cistern 12 enters mixing machine 26 from induction tunnel 27, and playpipe 25 is shrinkage type jet pipe, the flow rate of water flow ejecting from playpipe right-hand member is larger, make its pressure be less than virtual high level cistern 12 to flow to the pressure of the current A2 in induction tunnel 27, therefore form low-pressure area at the left end of collapsible tube 28, under the swabbing action of current A1 in playpipe 25, current A2 in induction tunnel 27 flows into changeover portion 29 by the further acceleration decompression of collapsible tube 28 after flowing into the current A1 blending in low-pressure area and playpipe 25, speed and the pressure of current after blending in changeover portion 29 remains unchanged, then flow into diffuser pipe 30, the current that flow into diffuser pipe 30 flow into the front pipe of water pump 9 after the interior deceleration pressurization of diffuser pipe 30, after handling water pump 9 pressurizations, the controller in control cabinet 11 delivers to user pipe 22 again, the pressure energy of the current that make like this to arrive user pipe 22 before water pump 9 reaches the more than 60% of city planting ductwork hydraulic pressure, when the water pump 9 of controller in control cabinet 11 manipulation is simultaneously worked, vacuum tank 21 also fills water, when user's water supply volume is during lower than default water limiting value, controller in control cabinet 11 cuts out water pump 9, stop drawing water from city planting ductwork 1, now user's water flows into realize water supply by the water of vacuum tank 21 interior storages, when liquid level in liquid level sensor 13 detects virtual high level cistern 12 sets value lower than low level in addition, controller control the first electric control valve 17 in control cabinet 11 is opened, make the water in city planting ductwork 1 flow into water tank 111, meanwhile, controller in control cabinet 11 is the work with the value control gas type accumulator 14 of pressure sensor 15 according to virtual high level cistern, air intake valve by gas type accumulator 14 is opened, gas type accumulator 14 just starts to store pressure-air accumulation of energy, pressure and the energy of flow of the current of city planting ductwork 1 can be stored by gas type accumulator 14 in virtual high level cistern, when liquid level in liquid level sensor 13 detects virtual high level cistern 12 sets value higher than a high position, controller control the first electric control valve 17 in control cabinet 11 cuts out, city planting ductwork 1 stops to virtual high level cistern 12 water fillings, in addition in energy saving water supply process, virtual high level cistern pressure sensor 15 is for guaranteeing the security of operation of virtual high level cistern 12, when ductwork pressure occurs when abnormal, be the pipeline of city planting ductwork while bearing pressure higher than default municipal ductwork pressure limiting value the controller in control cabinet 12 handle the first electric control valve 17 and close, and when virtual high level cistern pressure sensor 15 sense pressure in water tank 111 lower than set the water tank hydraulic pressure value of defining time, controller in control cabinet 12 cuts out the second electric control valve 18, and auxiliary pressure sensor 8 is for detection of the operation conditions of described energy-conservation high-floor feedwater system, show in real time energy recovery rate and energy-saving effect with this, and if the inconsistent i.e. explanation of database of system monitoring expert system in controller in the force value that detects of auxiliary pressure sensor 8 and control cabinet 12 there is eligible for repair operation troubles.
The present invention and tradition are box without the advantage compared with negative pressure secondary supply equipment:
The present invention uses the virtual high level cistern technology of a virtual high position and injector injection principle, the pressure of city planting ductwork water is fully utilized, water flow pressure before water pump can return to the more than 60% of city planting ductwork hydraulic pressure, reduce the power of water pump, save the energy, reduced the initialization expense of water pump;
In addition, the volume of virtual high level cistern is reduced to 1/3 of legacy equipment, has reduced the initialization expense of equipment, has reduced the volumetric spaces of equipment; Finally, the present invention, by control system, can provide stable water supply according to user's water demand.
Accompanying drawing explanation
Fig. 1 is the structural representation of virtual high level cistern of the present invention.
Fig. 2 is the structural representation of the present invention for the water supply network of the energy-conservation high-floor feedwater system of secondary pressurized.
Fig. 3 is the structural representation of injector of the present invention, and wherein arrow represents water (flow) direction.
The specific embodiment
Below by specific embodiment, the present invention will be further described:
As shown in Figure 2, for the energy-conservation high-floor feedwater system of secondary pressurized, the described energy-conservation high-floor feedwater system for secondary pressurized includes valve 2, main water inlet tube 3, main current flow quantity sensor 4, main flow pressure sensor 5, threeway 6, injector 7, auxiliary pressure sensor 8, water pump 9, the first one way valve 10, with the control cabinet 11 of controller, virtual high level cistern 12, the second one way valve 16, the first electric control valve 17, the second electric control valve 18, auxiliary flow sensor 19, vacuum tank 21 and user pipe 22, main water inlet tube 3 connects access city planting ductwork 1 by valve 2, on main water inlet tube 3, be provided with main current flow quantity sensor 4 and main flow pressure sensor 5, the left end of the delivery port connecting tee 6 of main water inlet tube 3, the right-hand member of threeway 6 connects the playpipe of injector 7, the upper end of threeway 6 is connected the water inlet 23 of virtual high level cistern 12 with the pipeline of the second one way valve 16 by being provided with the first electric control valve 17, the delivery port 24 of virtual high level cistern 12 is connected the induction tunnel of injector 7 with the pipeline of the second electric control valve 18 by being provided with auxiliary flow sensor 19, injector 7 is connected with water pump 9 by the pipeline that is provided with auxiliary pressure sensor 8, water pump 9 connects user pipe 22 by the pipeline that is provided with the first one way valve 10, on the pipeline between the first one way valve 10 and user pipe 22, vacuum tank 21 is housed, described main current flow quantity sensor 4, main flow pressure sensor 5, auxiliary pressure sensor 8, water pump 9, the first electric control valve 17, the second electric control valve 18 and auxiliary flow sensor 19 are all connected with the controller in control cabinet 10, main current flow quantity sensor 4 is used for measuring the flow of main water inlet tube 3, main flow pressure sensor 5 is used for measuring the pressure of main water inlet tube 3, auxiliary pressure sensor 8 is used for measuring the front pressure of pump of water pump 9, auxiliary flow sensor 19 is used for measuring the flow of the injection current that injector 7 derives, one way valve 9 and one way valve 16 are used for anti-sealing and reflux.
As shown in Figure 1, described virtual high level cistern 12 comprises box or pot type water tank 111, liquid level sensor 13, gas type accumulator 14, pressure sensor 15, blowoff valve 20 for virtual high level cistern, the water inlet 23 of virtual high level cistern 12, the delivery port 24 of virtual high level cistern 12;
Wherein liquid level sensor 13, gas type accumulator 14 and virtual high level cistern are arranged on water tank 111 with pressure sensor 15, liquid level sensor 13 is used for measuring the liquid level in water tank 111, gas type accumulator 14 is used for storing the pressure and the energy of flow that flow into the water in water tank 111, virtual high level cistern is used for measuring the pressure in water tank 111 with pressure sensor 15, blowoff valve 20 is arranged on the lower end of water tank 111, the water inlet 23 of virtual high level cistern 12 is arranged on the side of water tank 111, the delivery port 24 of virtual high level cistern 12 is arranged on the lower end of water tank 111.
When liquid level in liquid level sensor 13 detects virtual high level cistern 12 sets value lower than low level, controller control the first electric control valve 17 in control cabinet is opened, make the water in city planting ductwork 1 flow into water tank 111, meanwhile, controller in control cabinet is according to the work of the value control gas type accumulator 14 of virtual high level cistern 12 use pressure sensors 15, the pressure of city planting ductwork current and the energy of flow are stored by gas type accumulator 14 in water tank like this, rather than be wasted, improve capacity usage ratio.
When liquid level in liquid level sensor 13 detects virtual high level cistern 12 sets value higher than a high position, controller control the first electric control valve 17 in control cabinet cuts out, and city planting ductwork 1 stops to virtual high level cistern 12 water fillings.
Utilize gas type accumulator to store pressure and the energy of flow of the water of city planting ductwork, be equivalent in the situation that not promoting virtual high level cistern height, utilize the pressure of city planting ductwork water self that water extraction is raised to the height corresponding with its pressure, therefore, this water tank with gas type accumulator is referred to as to virtual high level cistern.The energy that gas type accumulator stores is used for increasing the pressure fluctuation that draught jet capacity and pressure and heeling pump suction produce.
As shown in Figure 3, described injector 7 comprises playpipe 25, mixing machine 26, induction tunnel 27, collapsible tube 28, changeover portion 29 and diffuser pipe 30, described playpipe 25 stretches into into the left end of mixing machine 26, and the right-hand member contraction section of playpipe 25 stretches into into the left end of collapsible tube 28; The upper end of mixing machine 26 connects induction tunnel 27, and the right-hand member of mixing machine 26 connects the bigger diameter end of collapsible tube 28; The miner diameter end of collapsible tube 28 is connected with changeover portion 29 left ends, and the right-hand member of changeover portion 29 is connected with the miner diameter end of diffuser pipe 30; The axis conllinear of playpipe 25, collapsible tube 28, changeover portion 29 and diffuser pipe 30.The left end of described playpipe 25 is pipe, and the right-hand member of playpipe 25 is shrinkage type Taper Pipe, and the current of city planting ductwork 1 accelerate decompression therein; Collapsible tube 28 is shrinkage type conical tube, accelerates post-decompression current and forms negative pressuren zone at the bigger diameter end of collapsible tube 28, the water in this negative pressuren zone suction induction tunnel 27; After mixing, current accelerate decompression in the interior continuation of collapsible tube 28; Changeover portion 29 is pipe, and the pipe diameter of changeover portion 29 is identical with the miner diameter end diameter of collapsible tube 28 and diffuser pipe 30; The left end of diffuser pipe 30 is expanding conical tube, and the right-hand member of diffuser pipe 30 is pipe, the current supercharging of slowing down therein.
The energy saving water supply method of the described energy-conservation high-floor feedwater system for secondary pressurized is the water supply volume when user pipe 22 when little, detects that by main current flow quantity sensor 4 discharge of main water inlet tube is Q
1and Q
1while being less than setting value Q, the controller in control cabinet 11 just controls the second electric control valve 18 being connected with injector 7 and cuts out, and makes water supply volume all from the playpipe 25 of injector 7, comes so steadily to supply water, in the time that user's water supply volume is large, detect that by main current flow quantity sensor 4 discharge of main water inlet tube 3 is Q
2and Q
2while being greater than setting value Q, the second electric control valve 18 that the controller control in control cabinet is connected with injector 7 is opened, and according to Q
2with controller control in difference control cabinet between Q arranges the flow value that the aperture of the second electric control valve 18 detects auxiliary flow sensor 19 and reaches (Q
2-Q) * 120%, if the flow value that auxiliary flow sensor 19 detects is greater than (Q
2-Q) aperture of controller control the second electric control valve 18 in * 120% item control cabinet diminishes until the flow value that auxiliary flow sensor 19 detects reaches (Q
2-Q) * 120%, if the flow value that auxiliary flow sensor 19 detects is less than (Q
2-Q) aperture of controller control the second electric control valve 18 in * 120% item control cabinet becomes large until the flow value that auxiliary flow sensor 19 detects reaches (Q
2-Q) * 120%, the water in virtual like this high level cistern 12 enters mixing machine 26 from induction tunnel 27, and playpipe 25 is shrinkage type jet pipe, the flow rate of water flow ejecting from playpipe right-hand member is larger, make its pressure be less than virtual high level cistern 12 to flow to the pressure of the current A2 in induction tunnel 27, therefore form negative pressuren zone at the left end of collapsible tube 28, under the swabbing action of current A1 in playpipe 25, current A2 in induction tunnel 27 flows into changeover portion 29 by the further acceleration decompression of collapsible tube 28 after flowing into the current A1 blending in negative pressuren zone and playpipe 25, speed and the pressure of current after blending in changeover portion 29 remains unchanged, then flow into diffuser pipe 30, the current that flow into diffuser pipe 30 flow into the front pipe of water pump 9 after the interior deceleration pressurization of diffuser pipe 30, after handling water pump 9 pressurizations, the controller in control cabinet 11 delivers to user pipe 22 again, the pressure energy of the current that make like this to arrive user pipe 22 before water pump 9 reaches the more than 60% of city planting ductwork hydraulic pressure, when the water pump 9 of controller in control cabinet 11 manipulation is simultaneously worked, vacuum tank 21 also fills water, when user's water supply volume is during lower than default water limiting value, controller in control cabinet 11 cuts out water pump 9, stop drawing water from city planting ductwork 1, now user's water flows into realize water supply by the water of vacuum tank 21 interior storages, when liquid level in liquid level sensor 13 detects virtual high level cistern 12 sets value lower than low level in addition, controller control the first electric control valve 17 in control cabinet 11 is opened, make the water in city planting ductwork 1 flow into water tank 111, meanwhile, controller in control cabinet 11 is the work with the value control gas type accumulator 14 of pressure sensor 15 according to virtual high level cistern, air intake valve by gas type accumulator 14 is opened, gas type accumulator 14 just starts to store pressure-air accumulation of energy, pressure and the energy of flow of the current of city planting ductwork 1 are stored by gas type accumulator 14 in virtual high level cistern, when liquid level in liquid level sensor 13 detects virtual high level cistern 12 sets value higher than a high position, controller control the first electric control valve 17 in control cabinet 11 cuts out, city planting ductwork 1 stops to virtual high level cistern 12 water fillings, in addition in energy saving water supply process, virtual high level cistern pressure sensor 15 is for guaranteeing the security of operation of virtual high level cistern 12, when ductwork pressure occurs when abnormal, be the pipeline of city planting ductwork while bearing pressure higher than default municipal ductwork pressure limiting value the controller in control cabinet 11 handle the first electric control valve 17 and close, and when virtual high level cistern pressure sensor 15 sense pressure in water tank 111 lower than set the water tank hydraulic pressure value of defining time, controller in control cabinet 11 cuts out the second electric control valve 18, and auxiliary pressure sensor 8 is for detection of the operation conditions of described energy-conservation high-floor feedwater system, show in real time energy recovery rate and energy-saving effect with this, and if the inconsistent i.e. explanation of database of system monitoring expert system in controller in the force value that detects of auxiliary pressure sensor 8 and control cabinet 11 there is eligible for repair operation troubles.
The pressure of the current that mix by injector injection before water pump can reach the more than 60% of city planting ductwork hydraulic pressure, so just the hydraulic pressure of city planting ductwork is effectively used, reduce the operating power of water pump, realized energy-saving effect, and can reduce the initialization expense of equipment.
In the time that the water supply volume of user pipe is excessive; user pipe water mainly carrys out self-virtualizing high level cistern; gas type accumulator on virtual high level cistern can aspirate the pressure fluctuation producing by heeling pump; the water yield of playpipe is not with increase in demand; it is stable that speed in playpipe and pressure keep; maintain the pressure stability of city planting ductwork water side, thereby protected city planting ductwork.