CN103615774B - Auxiliary device for pump system, control method for auxiliary device and pump system - Google Patents
Auxiliary device for pump system, control method for auxiliary device and pump system Download PDFInfo
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- CN103615774B CN103615774B CN201310560543.4A CN201310560543A CN103615774B CN 103615774 B CN103615774 B CN 103615774B CN 201310560543 A CN201310560543 A CN 201310560543A CN 103615774 B CN103615774 B CN 103615774B
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- regulating valve
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- pumping system
- temperature value
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Abstract
The invention discloses an auxiliary device for a pump system, a control method for the auxiliary device and a pump system. The auxiliary device for the pump system comprises a first adjusting valve, a second adjusting valve, a compressor, a sensor and a controller, wherein the first adjusting valve is connected with a pump to form a closed loop through pipes; the second adjusting valve is arranged on a bypass of the closed loop; the bypass is connected with the first adjusting valve in parallel; the compressor is arranged on the bypass; the sensor is arranged on the closed loop and is used for measuring the pressure value and the temperature value in the closed loop; and the controller is connected with the sensor, acquires the pressure value and the temperature value, and controls the first adjusting valve, the second adjusting valve and the compressor according to the pressure valve and the temperature valve. When the pump system is started under the condition of low load or when the load of the pump system is low, the controller is used for controlling the first adjusting valve, the second adjusting valve and the compressor according to the acquired pressure value and the acquired temperature value in the closed loop, so that the phenomenon of cavitation erosion is avoided, the normal operation of the pump system is guaranteed, and running abrasion and noise vibration of a pump are reduced.
Description
Technical field
The present invention relates to refrigeration technology field, and especially, it is related to a kind of auxiliary device for pumping system
And the control method for this auxiliary device, a kind of pumping system.
Background technology
Contemporary data center, in order to maintain relatively low temperature in machine room, needs the annual air-conditioning that starts to be in data center
Load in work is lowered the temperature, and thereby produces huge power consumption and operating cost.In energy-saving and emission-reduction and
Under the dual-pressure cutting operating costs, needing is the new power-saving technology of data center's research and development and new energy-conservation is produced
Product.
When transition season outdoor temperature is relatively low, nature has abundant natural cooling source, therefore, utilizes
Low-temperature receiver is transported to machine room after technical finesse by the low-temperature receiver of outdoor air, thus reducing the temperature of machine room,
The effect of energy-saving and emission-reduction can be reached.
Pumping system (because the cold-producing medium that air-conditioning refrigeration system is commonly used is freon, is therefore referred to as fluorine pump
System) it is a kind of air conditioning system to drive cold-producing medium with pump replacement compressor.In summer, data center is special
Open refrigeration compressor with air-conditioning normally to freeze, when outdoor temperature is less than controller predetermined temperature,
Controller switches to fluorine pump to freeze by compressor cooling automatically: the freon liquid of outdoor air-cooled condensation part cooling
It is pumped in evaporation part by fluorine, after absorbing indoor heat, freon is changed into gaseous state by liquid, enters
The cold condensation part of inlet air, is cooled to liquid again, goes round and begins again.Because fluorine pump power is much smaller than refrigeration compressor
Power, on the premise of identical refrigerating capacity, the Energy Efficiency Ratio of fluorine pump is higher than refrigeration compressor, thus reaching fall
Energy-saving effect is played while warm.
As shown in figure 1, being fluorine pumping system of the prior art, in the fluorine pumping system shown in Fig. 1, its work
As flow process it is:
Pumping plant outside priming chamber (in figure is not shown, and the water side of not shown plate type heat exchanger 1), make board-like
The inflow temperature of heat exchanger 1 water side drops to design temperature；
In plate type heat exchanger 1 water side absorption system, the heat of freon, is allowed to be condensed into liquid by gaseous state, enters
Enter fluid reservoir；
Load in data center is started working, and produces heat；
In system, freon absorbs Indoor Thermal amount by plate type heat exchanger 2, because temperature raises, volumetric expansion,
And then spread to plate type heat exchanger 1；
So move in circles work, thus lowering the temperature to interior.
Wherein, liquid being should be by the fluid of pump, if there is gas by the fluid of pump, gas will be produced
Cave phenomenon, and pump (also referred to as water pump) impeller surface be subject to cavitation impact and corrode produce peel off and
The phenomenon damaged, that is, occur in that cavitation phenomenons, additionally, pump also can be made to produce noise and vibration, and leads to pump
Hydraulic performance decline, liquid can be made in pump when serious to interrupt it is impossible to normal work.Therefore pumping system before operation,
Need to ensure do not have gas to enter pump.
But existing pumping system, only when indoor temperature is sufficiently high, pass through the freon steaming of plate type heat exchanger 2
Send out volumetric expansion when obtaining sufficiently large, system just can be made to obtain enough driving forces it is ensured that freon in fluid reservoir
The liquid level of liquid, thus do not remain any gas.Now open pumping system, system just can normally be transported
OK.
Therefore, before runtime, indoor temperature should be sufficiently high for existing pump.Otherwise, pump can be led to produce
Cavitation phenomenons, affects the normal operation of whole pumping system.
Although existing pumping system can normally run in the course of the work, all suffer from cold start-up or low
When starting under loading condition, in system drive power deficiency, fluid reservoir, there is gas residue, lead to occur cavitation existing
As the normal problem run of impact pumping system.
For in correlation technique when cold start-up pumping system or system are in low-load state, due to system drive
It is short of power and lead to cavitation phenomenons, the normal problem run of impact pumping system, not yet propose at present effectively to solve
Certainly scheme.
Content of the invention
For in correlation technique when cold start-up pumping system or system are in low-load state, due to system drive
It is short of power and lead to cavitation phenomenons, the normal problem run of impact pumping system, the present invention proposes one kind and is used for pump
The auxiliary device of system and the control method for this auxiliary device and pumping system, can make system low
When starting under loading condition or in the case that the load of pumping system is low, reduce the generation of cavitation phenomenons,
Thus improving the refrigerating efficiency of system, and reduce service wear and the noise vibration of system.
The technical scheme is that and be achieved in that:
According to an aspect of the invention, it is provided a kind of auxiliary device for pumping system
Pump is included according to the pumping system of the present invention, pumping system auxiliary device includes the first regulating valve, the second regulation
Valve, compressor, sensor, controller: the first regulating valve, by closing that pipeline and pump formation are interconnected
Close loop；Second regulating valve, is arranged at the bypass of closed-loop path, and bypass is in parallel with the first regulating valve；Compression
Machine, is arranged at bypass；Sensor, is arranged at closed-loop path, for measure the pressure value in closed-loop path and
Temperature value；Controller, connects sensor, obtains pressure value and temperature value, and according to pressure value and temperature value
Control the first regulating valve, the second regulating valve and compressor.
Wherein, controller is used for opening the first regulating valve, closes the second regulating valve and compressor.
Alternatively, controller is used for cutting out the first regulating valve, opens the second regulating valve and compressor.
Preferably, above-mentioned first regulating valve and the second regulating valve are electromagnetic valve.
According to an aspect of the invention, it is provided a kind of control method of the auxiliary device for pumping system.
The control method of the auxiliary device of the pumping system according to the present invention includes: obtains the pressure in closed-loop path
Value and temperature value；Determined to the first regulating valve, the second regulating valve and compressor according to pressure value and temperature value
Control method；According to control method, the first regulating valve, the second regulating valve and compressor are controlled.
Wherein, pressure value be higher than pipeline in temperature value when saturation pressure in the case of, close first regulation
Valve, opens compressor and the second regulating valve；The feelings of the saturation pressure when pressure value is less than pipeline in temperature value
Under condition, open the first regulating valve, close compressor and the second regulating valve.
According to an aspect of the invention, it is provided a kind of pumping system.
Evaporation part, condensation part: evaporation part are further included according to the pumping system of the present invention, is arranged at and closes back
Road, for accommodating cold-producing medium；Condensation part, is arranged at closed-loop path, for accommodating cold-producing medium.
Preferably, evaporation part and condensation part all include plate type heat exchanger.
Additionally, above-mentioned pumping system further includes the 3rd regulating valve, it is arranged at closed-loop path.
And, above-mentioned pumping system further includes fluid reservoir, for storing cold-producing medium.
The present invention passes through to start in the case of low-load during pumping system or when the low feelings of the load of pumping system
Under condition, using controller according to pressure value and the temperature value in the closed-loop path obtaining control the first regulating valve,
Second regulating valve and compressor avoiding cavitation phenomenons, thus ensureing the normal work of pumping system, and
Reduce service wear and the noise vibration of pump.
Brief description
Fig. 1 is the schematic diagram of pumping system in prior art；
Fig. 2 is the block diagram of the auxiliary device of pumping system according to embodiments of the present invention；
Fig. 3 is the flow chart of the control method of the auxiliary device of pumping system according to embodiments of the present invention；
Fig. 4 is the block diagram of pumping system according to embodiments of the present invention；
Fig. 5 is the schematic diagram of fluorine pumping system according to an embodiment of the invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by it is clear that described embodiment is only a part of embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art obtained all its
His embodiment, broadly falls into the scope of protection of the invention.
According to embodiments of the invention, there is provided a kind of auxiliary device of pumping system.
As shown in Fig. 2 this pumping system includes pump 20, auxiliary device according to embodiments of the present invention includes
One regulating valve 21, the second regulating valve 22, compressor 23, sensor 24 and controller 25.
Wherein, the first regulating valve 21 passes through the closed-loop path that pipeline is interconnected with pump 20 formation；
Second regulating valve 22 is arranged at the bypass of closed-loop path, and this bypass is in parallel with the first regulating valve 21；
Compressor 23 is arranged in bypass it is preferable that being located at the exit of the second regulating valve 22；
Sensor 24 is arranged at closed-loop path, for measuring the pressure value in closed-loop path and temperature value, can
To have one or more temperature sensors/pressure value sensor, more accurately to measure the pressure in closed-loop path
Force value and temperature value；
Controller 25 connects sensor 24, obtains pressure value and the temperature value that sensor 24 measurement obtains,
And the first regulating valve 21, the second regulating valve 22 and compressor 23 are controlled according to pressure value and temperature value, including
Control the opening and closing of the first regulating valve 21, the second regulating valve 22 and compressor 23.
In Fig. 2, hachure is the pipeline in closed-loop path, and the lines with arrow represent temperature and pressure feedback
The direction of information transmission, controller 25 is the core component of feedback control, controller 25 in cold start-up or
In the case of low-load, when the pressure value in closed-loop path is less than the saturation pressure of current temperature value, then close
First regulating valve 21, and open the second regulating valve 22 and compressor 23；Normal in the load needing refrigeration
In the case of work or when indoor/outdoor temperature-difference is larger, i.e. when the pressure value in closed-loop path is more than Current Temperatures
The saturation pressure of value, then switch the flow branch of cold-producing medium, opens the first regulating valve 21, closes the second tune
Section valve 22 and compressor 23 are it is preferable that the first regulating valve 21 described in literary composition and the second regulating valve 22 are equal
For electromagnetic valve, it can be controlled to open and closure with the signal of telecommunication in order to controller 25.
According to embodiments of the invention, provide a kind of control method of the auxiliary device of pumping system simultaneously.
As shown in figure 3, the control method of the auxiliary device of pumping system according to embodiments of the present invention includes:
Step s301, obtains the pressure value in closed-loop path and temperature value；
Step s303, determines to the first regulating valve 21, the second regulating valve 22 according to pressure value and temperature value
Control method with compressor 23；
Step s305, according to the control method determining to the first regulating valve 21, the second regulating valve 22 and compression
Machine 23 is controlled, that is, control the first regulating valve 21, the second regulating valve 22 and compressor 23 to be opened
And closing.
Wherein, pressure value be higher than pipeline in temperature value when saturation pressure in the case of, close first regulation
Valve 21, opens compressor 23 and the second regulating valve 22；Saturation when pressure value is less than pipeline in temperature value
In the case of pressure, open the first regulating valve 21, close compressor 23 and the second regulating valve 22.
According to embodiments of the invention, provide a kind of pumping system simultaneously.
As shown in figure 4, pumping system according to embodiments of the present invention includes the auxiliary device shown in Fig. 2, go forward side by side
One step includes:
Evaporation part 41, is arranged at closed-loop path, and for accommodating cold-producing medium, the cold-producing medium in evaporation part 41 exists
After absorbing heat, can evaporate, subsequently into closed-loop path；
Condensation part 42, is arranged at closed-loop path, and for accommodating cold-producing medium, the cold-producing medium in condensation part 42 exists
After release heat, then liquefaction enter pump by the 3rd regulating valve 43, and wherein, cold-producing medium can be fluorine
Leon.
Wherein, evaporation part 41 and condensation part 42 all include plate type heat exchanger.
Pumping system also includes the 3rd regulating valve 43, is arranged at closed-loop path.
Pumping system also includes fluid reservoir (not shown), is arranged at closed-loop path, for storing cold-producing medium,
Need to store in fluid reservoir in advance cold-producing medium, the work heat dispersal situations of the load radiated as needed determine system
The amount of cryogen and all kinds of, and the specification of fluid reservoir.
According to one embodiment of present invention, there is provided a kind of fluorine pumping system.As shown in figure 5, in such as Fig. 1
On the basis of shown existing fluorine pumping system, in the pipe section of electromagnetic valve 3 light duty compressor in parallel and
Electromagnetic valve 2, and pass through to control the corresponding literary composition of electromagnetic valve 2(according to the temperature value in fluorine pumping system and pressure value
In mentioned the second regulating valve 22), mentioned the first regulating valve 21 in the corresponding literary composition of electromagnetic valve 3()
On off state, thus selecting system running state, the temperature of temperature in collection air pump system not shown in Fig. 5
Sensor, and control end.
Capacity can be selected little, but the high compressor of compression ratio, the acting as of this compressor: in fluorine pumping system
Before unlatching, by the gas of the normal temperature and pressure Freon gases boil down to High Temperature High Pressure in fluorine pumping system pipeline, should
The gas of High Temperature High Pressure can easily liquefy as freon liquid, enters in fluid reservoir.
The workflow of fluorine pumping system as shown in Figure 5 includes: before fluorine pumping system needs cold start-up, control
Electromagnetic valve 3, opens solenoid valve 2 and compressor simultaneously are closed in end processed, by electromagnetic valve 2 and compressor will be
Freon gases liquefaction in road under the overall leadership, is extracted in fluid reservoir via plate type heat exchanger 1, at this point it is possible to make
Obtain the pressure drop in the pipeline of air pump system；The pressure drop of the pipeline receiving when control end is to less than pipe
In road during the saturation pressure of Current Temperatures, system just obtains the original driving force starting circulation；Now close again
Close electromagnetic valve 2 and compressor, opens solenoid valve 3, the circulation duct of switching cold-producing medium, be then turned on fluorine pump,
System is made normally to run.
In sum, by means of the technique scheme of the present invention, the present invention passes through to open in the case of low-load
During dynamic pumping system or in the case that the load of pumping system is low, returned according to the closure obtaining using controller
Pressure value in road and temperature value control the first regulating valve, the second regulating valve and compressor to avoid cavitation
Phenomenon, thus ensureing the normal work of pumping system, and reduces the service wear of pump and noise vibration, and
Can be by opening the rising that fluorine pumping system eliminates room temperature at any time, as long as opening fluorine pump just can quickly reduce room temperature.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement made etc., should be included in this
Within bright protection domain.
Claims (9)
1. a kind of auxiliary device for pumping system, described pumping system includes pump it is characterised in that including:
First regulating valve, the closed-loop path being interconnected with described pump formation by pipeline；
Second regulating valve, is arranged at the bypass of described closed-loop path, and described bypass is in parallel with described first regulating valve；
Compressor, is arranged at described bypass；
Sensor, is arranged at described closed-loop path, for measuring pressure value and temperature value in described closed-loop path；
Controller, connects described sensor, obtains described pressure value and temperature value, and controls described first regulating valve, described second regulating valve and described compressor according to described pressure value and temperature value；
Wherein, described pressure value be higher than described pipeline in described temperature value when saturation pressure in the case of, close described first regulating valve, open described compressor and described second regulating valve；
In the case of saturation pressure when described pressure value is less than described pipeline in described temperature value, open described first regulating valve, close described compressor and described second regulating valve.
2. auxiliary device according to claim 1, it is characterised in that described controller is used for opening described first regulating valve, cuts out described second regulating valve and described compressor.
3. auxiliary device according to claim 1, it is characterised in that described controller is used for cutting out described first regulating valve, opens described second regulating valve and described compressor.
4. the auxiliary device according to any one in claim 1-3 is it is characterised in that described first regulating valve and described second regulating valve are electromagnetic valve.
5. a kind of control method for the auxiliary device described in any one in claim 1-4 is it is characterised in that include:
Obtain the pressure value in described closed-loop path and temperature value；
Determine the control method to described first regulating valve, described second regulating valve and described compressor according to described pressure value and temperature value；
According to described control method, described first regulating valve, described second regulating valve and described compressor are controlled；
Wherein, described pressure value be higher than described pipeline in described temperature value when saturation pressure in the case of, close described first regulating valve, open described compressor and described second regulating valve；
In the case of saturation pressure when described pressure value is less than described pipeline in described temperature value, open described first regulating valve, close described compressor and described second regulating valve.
6. it is characterised in that including the auxiliary device described in any one in claim 1-4, described pumping system further includes a kind of pumping system:
Evaporation part, is arranged at described closed-loop path, for accommodating cold-producing medium；
Condensation part, is arranged at described closed-loop path, for accommodating cold-producing medium；
Wherein, described pressure value be higher than described pipeline in described temperature value when saturation pressure in the case of, close described first regulating valve, open described compressor and described second regulating valve；
In the case of saturation pressure when described pressure value is less than described pipeline in described temperature value, open described first regulating valve, close described compressor and described second regulating valve.
7. pumping system according to claim 6 is it is characterised in that described evaporation part and described condensation part all include plate type heat exchanger.
8. pumping system according to claim 6 is it is characterised in that further include:
3rd regulating valve, is arranged at described closed-loop path.
9. pumping system according to claim 6 is it is characterised in that further include:
Fluid reservoir, for storing cold-producing medium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560543.4A CN103615774B (en) | 2013-11-12 | 2013-11-12 | Auxiliary device for pump system, control method for auxiliary device and pump system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310560543.4A CN103615774B (en) | 2013-11-12 | 2013-11-12 | Auxiliary device for pump system, control method for auxiliary device and pump system |
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| CN103615774A CN103615774A (en) | 2014-03-05 |
| CN103615774B true CN103615774B (en) | 2017-01-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928268B (en) * | 2016-07-13 | 2018-05-29 | 上海海洋大学 | The control method and control system of dual-phase jet pump feed flow in a kind of refrigeration system |
| CN108917091B (en) * | 2018-09-28 | 2021-01-15 | 奥克斯空调股份有限公司 | Intelligent testing method for air conditioner and air conditioner thereof |
| CN111609497B (en) * | 2020-05-26 | 2022-05-03 | 深圳市艾特网能技术有限公司 | Control method and control device for natural cooling machine room air conditioner and natural cooling machine room air conditioner |
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| WO1995021360A1 (en) * | 1994-02-01 | 1995-08-10 | Jacques Bernier | Cooling device provided with a variable flow energy saving cycle |
| US5617738A (en) * | 1994-09-20 | 1997-04-08 | Saga University | Energy converter |
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Effective date of registration: 20161228 Address after: 100193 Beijing City, northeast of Haidian District Road No. 8 Building No. 36 hospital 5 floor room 528 Applicant after: Shuguang energy saving technology (Beijing) Limited by Share Ltd Address before: 100193 Beijing, Haidian District, northeast Wang West Road, building 8, No. 36 Applicant before: Dawning Information Industry (Beijing) Co., Ltd. |
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Address after: 100193 No.36 Zhongguancun Software Park, No.8 Dongbeiwang West Road, Haidian District, Beijing Patentee after: Dawning data infrastructure innovation technology (Beijing) Co.,Ltd. Address before: 100193 room 528, 5th floor, building 36, courtyard 8, Dongbeiwang Road, Haidian District, Beijing Patentee before: SUGON ENERGY-SAVING TECHNOLOGY (BEIJING) Co.,Ltd. |
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