CN208859784U - A kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device - Google Patents
A kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device Download PDFInfo
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- CN208859784U CN208859784U CN201821376105.7U CN201821376105U CN208859784U CN 208859784 U CN208859784 U CN 208859784U CN 201821376105 U CN201821376105 U CN 201821376105U CN 208859784 U CN208859784 U CN 208859784U
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Abstract
The utility model provides a kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device, air-conditioning flow computing device includes air-conditioning flow component, information acquisition system, flow processing system, the air-conditioning flow computing device mainly utilizes the real-time parameter for having installed thermometer and pressure gauge, without considering the prerequisite measurement length of straight pipe institute, it only need to be by the way that front and back pressure gauge on pipeline section and the data on thermometer be acquired by information acquisition system, and input the underlying parameter of water system, such as pipe material, the physical parameters such as caliber, water density etc., then the pipeline flow is calculated according to energy-balance equation model and continuity equation model, the air-conditioning flow computing device does not need installation entity flowmeter, advantageously reduce air-conditioning installation cost and maintenance cost, calculated result accuracy is high, avoid ultrasonic flowmeter because Fouling, pump and the mixed ultrasonic noise interference of other sound sources cause accuracy to reduce.
Description
Technical field
The utility model relates to air-conditioner water system technical fields, and in particular to a kind of novel Energy Efficient Retrofit of Public Building air-conditioning
Flow detection computing device, the calculating suitable for air-conditioner water system flow.
Background technique
Air-conditioning is the first object of Energy Efficient Retrofit of Public Building, and air conditioner energy saving essentially consists in the control of air-conditioner water system.It is empty
Water transfer system usually requires that its flow is measured and regulated and controled, and ordinary circumstance needs to install entity flow measurement device, existing
Flow measurement device is mainly ultrasonic flowmeter and electromagnetic flowmeter, but above-mentioned flowmeter is more expensive, and needs to flow
Meter carries out daily maintenance.Moreover, being the straight tube of stayed product requirement before and after need to meeting sensor when flowmeter measures work
Segment length, because influencing the accuracy of measurement there may be vortex place before and after pipeline turning, confluence and pipeline fittings；
Ultrasonic flowmeter there is also poor anti jamming capability, vulnerable to bubble, fouling, pump and the mixed ultrasonic noise interference of other sound sources,
Influence measurement accuracy.
Utility model content
The purpose of this utility model is to provide a kind of air-conditioning flow computing device, the air-conditioning flow computing device is mainly sharp
With the real-time parameter for having installed thermometer and pressure gauge, do not have to consider the prerequisite measurement length of straight pipe institute, flow rate calculation
As a result accuracy is high.
To achieve the above object, the utility model provides the following technical solutions:
A kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device, including air-conditioning flow component, information are adopted
Collecting system, flow processing system；The air-conditioning flow component includes upstream pipeline section, the first thermometer, first pressure gauge, Yong Huguan
Section, second temperature meter, second pressure gauge, downstream pipeline section；The information acquisition system includes temperature information acquisition system, pressure letter
Cease acquisition system and routine data loading system；The upstream pipeline section, user's pipeline section, downstream pipeline section are sequentially communicated, and described first
Thermometer and first pressure gauge are located on the pipeline section of upstream, and close to user's pipeline section, the second temperature meter and second pressure gauge are located at
On the pipeline section of downstream, close to user's pipeline section；First thermometer, second temperature meter and temperature information acquisition system data connection；
The first pressure gauge, second pressure gauge and pressure information acquisition system data connection；The temperature information acquisition system, pressure
Information acquisition system, routine data loading system and flow processing system data connection.
Further, the data connection is wired connection or wireless connection.
Further, described be wirelessly connected includes Zig-Bee, bluetooth, WiFi or NFC connection.
Above-mentioned air-conditioning flow computing device is mainly made by the underlying parameter of air-conditioner water system and main instrument real-time parameter
The flow on air-conditioner water system pipeline section is finally calculated by hydrodynamics and Thermodynamic Calculating Model for calculation basis.It is main
Wanting instrument is mounted thermometer and pressure gauge on air-conditioner water system, only need to be by by front and back pressure gauge and thermometer on pipeline section
On data acquired by information acquisition system, and input the underlying parameter of water system, such as pipe material, caliber physical property ginseng
Then number, water density etc. calculate the pipeline flow according to energy-balance equation model and continuity equation model.
Further, the air-conditioning flow computing device includes multiple groups air-conditioning flow component.
Further, in parallel between the multiple groups air-conditioning flow component to be connected.
Information acquisition system can acquire thermometer and pressure gauge data in multiple groups air-conditioning flow component respectively simultaneously, be transmitted to
Flow processing system carries out processing calculating.
Further, the flow processing system includes flow rate calculation system, data calibration system, the flow rate calculation
System is connected with information acquisition system data, and the data calibration system is connected with flow rate calculation system data.
The data calibration system, can be to the thermometer and pressure gauge data and flow rate calculation that flow rate calculation system obtains
System result calculated is calibrated, so that gained data on flows is more accurate.
Further, the flow processing system further includes data feedback control system, can be according to flow rate calculation system
The data obtained carries out data information feedback and regulation to the control assembly in air-conditioning flow component, meets different air-conditioning flow components
The variation of kind circulating flow.
The development and popularization and use of the utility model, mainly there is following advantage:
1, what utility model device utilized is the real-time parameter that air-conditioner water system has installed thermometer and pressure gauge, is not required to
Entity flowmeter is installed, air-conditioning installation cost and maintenance cost are advantageously reduced；
2, utility model device can not have to consider the prerequisite measurement length of straight pipe, compared to supersonic flow ultrasound
Wave flowmeter meter can easily facilitate measurement；
3, utility model device is conducive to improve the accuracy of volume computation, avoids ultrasonic flowmeter because of knot
Dirt, pump and the mixed ultrasonic noise interference of other sound sources cause accuracy to reduce.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the more air-conditioning flow component structural schematic diagrams of the utility model；
In figure: 1, air-conditioning flow component；2, information acquisition system；3, flow processing system；11, upstream pipeline section；12, first
Pressure gauge；13, the first thermometer；14, user's pipeline section；15, second temperature meter；16, second pressure gauge；17, downstream pipeline section；21,
Temperature information acquisition system；22, pressure information acquisition system；23, routine data loading system；31, flow rate calculation system；32,
Data calibration system.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
As shown in Figure 1, a kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device, including air-conditioning flow group
Part 1, information acquisition system 2, flow processing system 3；The air-conditioning flow component include upstream pipeline section 11, the first thermometer 13,
First pressure gauge 12, user's pipeline section 14, second temperature meter 15, second pressure gauge 16, downstream pipeline section 17；The information acquisition system
Including temperature information acquisition system 21, pressure information acquisition system 22 and routine data loading system 23；The upstream pipeline section is used
Family pipeline section, downstream pipeline section are sequentially communicated, and first thermometer and first pressure gauge are located on the pipeline section of upstream, are managed close to user
Section, the second temperature meter and second pressure gauge are located on the pipeline section of downstream, close to user's pipeline section；First thermometer, second
Thermometer and temperature information acquisition system data connection；The first pressure gauge, second pressure gauge and pressure information acquisition system
Data connection；The temperature information acquisition system, pressure information acquisition system, routine data loading system and flow processing system
Data connection, the flow rate calculation system are connected with information acquisition system data, and the data connection is wired connection.
The energy-balance equation model sees below formula:
In formula: △ u2For two section u1、u2The difference of square of flow velocity, g are local gravitational acceleration, and △ z is cross section place
Potential energy Z1、Z2Difference, △ P are two section P1、P2Pressure difference value, ρ are Media density.
Continuity equation model sees below formula:
ρ1u1A1=ρ2u2A2 (1-2)
In formula: ρ is Media density, u is velocity of medium, and A is pipeline section cross-section face.
The data of input routine data loading system include but is not limited to: pipeline section pipe diameter/outer perimeter, pipeline section pipeline material
Matter, pipeline section pipeline wall thickness, the height value of two section pipe centerlines to selected reference face, medium physical property parameter list (are led here
If water), pipeline frictional resistant coefficient λ, pipeline section pipe range L.
The data of acquisition: the medium temperature of the pressure gauge evaluation of two sections of pipeline section, two sections.
Air-conditioner water system straight tube pipeline section pipe diameter DN200, pipeline frictional resistant coefficient λ=0.0304, pipeline section pipe range L=
1m, outer perimeter L=690.8mm, material are carbon steel, wall thickness 8mm, two section pipe centerlines to datum level height value Z1、Z2?
For 5m, medium is the physical parameter table (being equivalent to the density p for automatically obtaining water) that water then needs input water.
When the data of acquisition, the pressure gauge numerical value P of two sections1、P2, the temperature value T of water in two sections1、T2。
At a certain moment, collect P1=500Pa, P2=350Pa, T1、T2It is 7 DEG C, then it can be according to the physical parameter of water
The density that table obtains water at this temperature is ρ=999.8kg/m3.Pipeline section section can be calculated according to pipeline outer perimeter and wall thickness
Cross-sectional area A1=A2=0.0326 ㎡.According to the pressure loss, pipeline frictional resistant coefficient λ=0.0304, pipeline section pipe range in software
Flow velocity u is calculated in the density p of L=1m, pipe diameter DN200 and water1=u2=1.4m/s.
Flow Q=u can be obtained by simultaneous equations (1-1) and (1-2) operation in the data and basic data of acquisition1A1=
u2A2=1.4 × 0.0326 × 3600=164.3m3/h。
When equipment is dispatched from the factory or is proofreaded, entity flowmeter (can real-time monitoring flow be Q1), institute can be set in water inlet
Stating air-conditioning flow computing device measurement flow is Q:
Q1=η Q
η is the intrinsic coefficient of flow system flow, and data are conveyed into basic data system, can be adjusted in real time to data on flows
It is whole.
Embodiment 2
Such as Fig. 2, the air-conditioning flow component such as embodiment 1 is identical, and difference is, the data connection is to be wirelessly connected,
Radio connection is one of Zig-Bee, bluetooth, WiFi or NFC connection type；Have a multiple groups air-conditioning flow component, each component it
Between it is in parallel be connected, information acquisition system can acquire thermometer and pressure gauge data in multiple groups air-conditioning flow component respectively simultaneously, pass
It transports to flow processing system and carries out processing calculating.
Further, the flow processing system includes flow rate calculation system 31, data calibration system 32, the flow
Computing system is connected with information acquisition system data, and the data calibration system is connected with flow rate calculation system data.
The data calibration system, can be to the thermometer and pressure gauge data and flow rate calculation that flow rate calculation system obtains
System result calculated is calibrated, so that gained data on flows is more accurate.
Further, the flow processing system further includes data feedback control system, can be according to flow rate calculation system
The data obtained carries out data information feedback and regulation to the control assembly in air-conditioning flow component, meets different air-conditioning flow components
The variation of kind circulating flow.
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all
It is included within the scope of protection of this utility model.
Claims (7)
1. a kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device, which is characterized in that including air-conditioning flow group
Part, information acquisition system, flow processing system；The air-conditioning flow component includes upstream pipeline section, the first thermometer, first pressure
Table, user's pipeline section, second temperature meter, second pressure gauge, downstream pipeline section；The information acquisition system includes temperature information acquisition system
System, pressure information acquisition system and routine data loading system；The upstream pipeline section, user's pipeline section, downstream pipeline section are sequentially communicated,
First thermometer and first pressure gauge are located on the pipeline section of upstream, and the second temperature meter and second pressure gauge are located at downstream tube
Duan Shang；First thermometer, second temperature meter and temperature information acquisition system data connection；The first pressure gauge, second
Pressure gauge and pressure information acquisition system data connection；The temperature information acquisition system, pressure information acquisition system, conventional number
According to loading system and flow processing system data connection.
2. air-conditioning flow detection computing device according to claim 1, which is characterized in that the data connection is wired company
It connects or is wirelessly connected.
3. air-conditioning flow detection computing device according to claim 2, which is characterized in that described be wirelessly connected includes Zig-
Bee, bluetooth, WiFi or NFC connection.
4. air-conditioning flow detection computing device according to claim 1, which is characterized in that the air-conditioning flow computing device
Including multiple groups air-conditioning flow component.
5. air-conditioning flow detection computing device according to claim 4, which is characterized in that the multiple groups air-conditioning flow component
Between in parallel be connected.
6. air-conditioning flow detection computing device according to claim 1, which is characterized in that the flow processing system includes
Flow rate calculation system, data calibration system, the flow rate calculation system are connected with information acquisition system data, the data calibration
System is connected with flow rate calculation system data.
7. air-conditioning flow detection computing device according to claim 1, which is characterized in that the flow processing system also wraps
Include data feedback control system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821376105.7U CN208859784U (en) | 2018-08-24 | 2018-08-24 | A kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821376105.7U CN208859784U (en) | 2018-08-24 | 2018-08-24 | A kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device |
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| CN208859784U true CN208859784U (en) | 2019-05-14 |
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| CN201821376105.7U Active CN208859784U (en) | 2018-08-24 | 2018-08-24 | A kind of novel Energy Efficient Retrofit of Public Building air-conditioning flow detection computing device |
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2018
- 2018-08-24 CN CN201821376105.7U patent/CN208859784U/en active Active
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Address after: A section of Chengdu city Jinniu District 610000 North Road No. 55 in Sichuan Province Patentee after: Sichuan Academy of Architectural Sciences Co., Ltd. Address before: A section of Chengdu city Jinniu District 610000 North Road No. 55 in Sichuan Province Patentee before: Research Inst. of Architectonics, Sichuan Prov. |
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