CN102519703A - Air terminal air volume balance detection analog device and analog detecting method thereof - Google Patents
Air terminal air volume balance detection analog device and analog detecting method thereof Download PDFInfo
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- CN102519703A CN102519703A CN2011104311468A CN201110431146A CN102519703A CN 102519703 A CN102519703 A CN 102519703A CN 2011104311468 A CN2011104311468 A CN 2011104311468A CN 201110431146 A CN201110431146 A CN 201110431146A CN 102519703 A CN102519703 A CN 102519703A
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Abstract
The invention discloses an air terminal air volume balance detection analog device and an analog detecting method thereof. The detection analog device comprises an air volume distribution system, each air outlet of the air volume distribution system is provided with an air volume detection analog system, each air volume detection analog system comprises an air volume detection section and a damping analog device, each air volume detection section comprises two pressure equalizing pipes, a first differential pressure gauge and a second differential pressure gauge, each damping analog device comprises a flexible pipe section and a damping analog adjusting section, the flexible pipe sections are used for simulating damping conditions of different elbows in actual engineering, and the damping analog adjusting sections adjust resistance via adjusting valves so as to simulate different damping conditions of various branch pipe sections in the actual engineering, so that air-volume balance of the system in a certain damping range is realized. The air terminal air volume balance detection analog device and the analog detecting method thereof particularly play important roles in guaranteeing terminal air-volume balance in the field of ventilation and air conditioning and improving energy conservation and stability of a variable air volume system.
Description
Technical field
The invention belongs to the measurement technical field of measurement and test, relate to a kind of air quantity pick-up unit, relate in particular to the terminal air balance test simulator of a kind of air; Simultaneously, the invention still further relates to the analog detection method of above-mentioned air balance test simulator.
Background technology
Air conditioning system with variable is the load that satisfies indoor variation through the air quantity that changes the room; When the room is lower than the design rated load, the air quantity of each VAV BOX will reduce automatically, and the demand of the total air output of system also reduces thereupon; At this moment can reduce the rotating speed of blower fan through automatic control, cut down the consumption of energy.Owing to can significantly reduce system's air output and installed capacity; Reach purpose energy-conservation and the minimizing investment; The variable air volume system application in the big and medium-sized cities at home is increasing; But less with the terminal air distribution system that the variable air rate control device is complementary, and in existing air distribution system use because terminal air quantity is uneven, cause air conditioning area uneven in temperature; Energy-saving effect is not obvious, therefore the terminal air balance test simulator of a kind of air that cooperates the variable air rate control device to use of necessary development.
In actual engineering,, often be difficult to accomplish the resistance balance between each arm during circuit design owing to receive influence such as airduct size, air port layout, installing space, the finishing requirement etc. of many factors.For this reason, on each take-off pipe, variable valve be set usually and regulate air quantity, it is met design requirement.In other words be exactly to rely on variable valve to change the drag losses of pipeline, make between each take-off pipe of system to reach resistance balance, keep the air output of designing requirement.Be easy to single valve regulated air quantity for single branch road, but for a plurality of branch lines, each Guan Douyong of end branch manual work is regulated air quantity through variable valve and is made its balance and reach relatively difficulty of designing requirement.And in air conditioning pipe system, the drag characteristic of each take-off pipe can change with the change of a certain arm drag characteristic wherein, will have to adjust repeatedly with general variable valve, produces the problem of a system debug.
Thereby the terminal air balance test simulator of air can draw in certain damping scope through the size of the concrete installation situation of each arm in the actual engineering being simulated angle of bend and damping and make the air quantity of each air outlet reach equilibrium state.This device can not only solve the problem of airduct construction of modern handle official bussiness building and air port difficult arrangement, adapts to the secondary decoration of office block, and is easy for installation, can guarantee the air balance and the thermal comfort requirement of each Administrative Area simultaneously.This system can guarantee the resistance balance between each take-off pipe simultaneously, and the air quantity debugging problem of simplified system adheres to specification terminal each tuyere air volume greatly, makes system more stable.
Summary of the invention
Technical matters to be solved by this invention is: provides a kind of air terminal air balance test simulator, can overcome the unbalancedness of air quantity in the terminal compartment system of existing air, and airduct construction, air port installation difficulty, the later stage air quantity is debugged drawbacks such as loaded down with trivial details.
In addition, the analog detection method that this also relates to above-mentioned air balance test simulator can overcome the unbalancedness that has air quantity in the terminal compartment system of air now, airduct construction, air port installation difficulty, and the later stage air quantity is debugged drawbacks such as loaded down with trivial details.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The terminal air balance test simulator of a kind of air, said test simulator comprises the air quantity compartment system, each air outlet of air quantity compartment system is installed a cover air quantity and is detected simulation system;
Said air quantity detects simulation system and comprises air quantity detection segment, damping analogue means;
Said air quantity detection segment comprises two balance pipes, first differential manometer, second differential manometer; The positive perforates of two balance pipes are communicated with the total head gaging holes, and back side perforate is communicated with static opening, and two balance pipes connect total head gaging hole, static opening through air conduit respectively, can be read two ends pressure reduction and calculated the face wind speed and the air quantity of pipeline by first differential manometer; Second differential manometer connects baroport, and the static pressure that records the baroport place draws Resistance Value;
Said damping analogue means comprises flexible tube section, damping analog regulation section; Said flexible tube section is used for simulating the damping situation of different elbows in the actual engineering; The size that said damping analog regulation section is regulated resistance through variable valve plays the different damping situation of each pipeline section in the actual engineering of simulation, thereby is implemented in the systematic air flow balance of certain damping scope.
As a kind of preferred version of the present invention, said air quantity compartment system comprises a plenum chamber and an air quantity air inlet and five air quantity air outlets.
As a kind of preferred version of the present invention; Said balance pipe is a wing formula balance pipe; Two wing formula balance pipes are linked together by the total head gaging hole of top drilling and the static opening positive and negative crimping hole through a plurality of air conduits and first differential manometer respectively, and first differential manometer can show pressure reduction and calculate face wind speed and air quantity;
Mean wind speed
Wherein, Δ P is the dynamic pressure value; ρ is an atmospheric density; α is a coefficient of flow, decides through experiment according to the shape of wing formula piezometric tube; F is that testing section is long-pending;
is mean wind speed, i.e. airduct face wind speed; Q is an air quantity.
As a kind of preferred version of the present invention; Connect air quantity detection segment and damping analog regulation section before and after the said flexible tube section respectively; Regulate differently curved angle and simulate all kinds elbow, damping analog regulation section is connected with pipeline by the orifice plate adjustment sheet, regulates different resistance sizes.
The analog detection method of the terminal air balance test simulator of a kind of above-mentioned air, said method comprises the steps:
Air quantity is detected each air outlet that simulation system inserts the air quantity compartment system;
The angle of bend of the flexible tube section through the damping analogue means and the resistance size of damping analog regulation section are simulated the influence of damping to the air quantity compartment system;
Obtain pipeline total head and static pressure by two balance pipes and air conduit, and show its pressure reduction, record the air quantity of pipeline through conversion by first differential manometer;
Record the static opening place by second differential manometer and get static pressure and draw Resistance Value, record that each air outlet air quantity reaches balance in certain damping scope.
Thinking of the present invention is: 1. the air quantity compartment system has five air outlets, but the air quantity of each outlet of centralized control and can be with the distribution of air balance, and simplified system is just with installation.The air quantity compartment system can carry out centralized control and play the effect of stablizing static pressure a plurality of air ports of certain VAVBOX wind outlet section in variable air volume system.2. the air quantity detecting element adopts two wing formula balance pipes, through being installed in each wind pipe after the combination, carries out face total head and face static pressure test.3. the damping analogue means can be simulated the different resistances sizes of differently curved angle and the pipeline of flexible pipe, the in-depth secondary decoration, guarantee under the different mounting conditions in certain range of resistance each tuyere air volume balance.4. one-step installation configures the balance adjustment work that resistance coefficient need not unit in charge of construction, reduces the degree of difficulty and the loaded down with trivial details degree of air quantity debugging.
Beneficial effect of the present invention is: terminal air balance test simulator of the air that the present invention proposes and analog detection method thereof; In engineering practice, has very strong realistic meaning; The heating ventilation and air-conditioning field is particularly guaranteed terminal air balance, and the energy saving and the stability that improve variable air volume system play an important role.
Description of drawings
Fig. 1 is the composition synoptic diagram of air balance test simulator of the present invention.
Fig. 2 is another composition synoptic diagram of air balance test simulator of the present invention.
Embodiment
Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, Fig. 2, the present invention has disclosed the terminal air balance test simulator of a kind of air, and its main air quantity compartment system 1, each air outlet of air quantity compartment system connect a cover air quantity and detect simulation system.It comprises air quantity detection segment, damping analogue means again.Wing formula balance pipe 2,3 can link to each other total head gaging hole, static opening through air conduit 4,5 in twos.By differential pressure indicator 6 its pressure reduction of test.Test pipeline section static pressure is a Resistance Value at baroport 8 places by differential pressure indicator 7 simultaneously.Straight length 9 links to each other with flexible tube section 10 usefulness clips, and flexible tube section 10 links to each other with damping analog regulation section 11 through clip more then.
Air quantity compartment system 1 can carry out centralized control and play the effect of stablizing static pressure a plurality of air ports of certain VAVBOX wind outlet section in variable air volume system; The air quantity detection segment is made up of two balance pipes, and the positive perforate of balance pipe is communicated with the total head gaging hole, and back side perforate is communicated with static opening, connects face wind speed and the air quantity that two gaging holes can be read two ends pressure reduction by differential manometer and calculate pipeline through air conduit; Flexible tube section can be simulated the damping situation of different elbows in the actual engineering in the damping analogue means; Regulate section and can play the different damping situation of each pipeline section in the actual engineering of simulation, thereby be implemented in the systematic air flow balance of certain damping scope through the size that variable valve is regulated resistance.
The air balance error of patent of the present invention is ± 5%.
The analog detection method of air balance test simulator of the present invention comprises the steps: air quantity is detected each air outlet that simulation system inserts the air quantity compartment system; Regulate the angle of bend of flexible pipe 10 through the damping analogue means and simulate the influence of damping the air quantity compartment system with the resistance size of regulating section 11; Simultaneously obtain pipeline total head and static pressure by two balance pipes 2,3 and air conduit 4,5; And, record the air quantity of pipeline through conversion by differential manometer 6 its pressure reduction of demonstration.Record baroport 8 places by differential manometer 7 and get static pressure and draw Resistance Value, record that each air outlet air quantity reaches balance in certain damping scope.
In sum, terminal air balance test simulator of the air that the present invention proposes and analog detection method thereof not only solve the problem of airduct construction and air port difficult arrangement, and can reduce the system debug difficulty and the fussy degree in engineering later stage greatly.The present invention particularly guarantees terminal air balance to the heating ventilation and air-conditioning field, and the energy saving and the stability that improve variable air volume system play an important role.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to the embodiment that is disclosed.
Claims (5)
1. the terminal air balance test simulator of air is characterized in that said test simulator comprises the air quantity compartment system, and each air outlet of air quantity compartment system is installed a cover air quantity and detected simulation system;
Said air quantity detects simulation system and comprises air quantity detection segment, damping analogue means;
Said air quantity detection segment comprises two balance pipes, first differential manometer, second differential manometer; The positive perforates of two balance pipes are communicated with the total head gaging holes, and back side perforate is communicated with static opening, and two balance pipes connect total head gaging hole, static opening through air conduit respectively, can be read two ends pressure reduction and calculated the face wind speed and the air quantity of pipeline by first differential manometer; Second differential manometer connects baroport, and the static pressure that records the baroport place draws Resistance Value;
Said damping analogue means comprises flexible tube section, damping analog regulation section; Said flexible tube section is used for simulating the damping situation of different elbows in the actual engineering; The size that said damping analog regulation section is regulated resistance through variable valve plays the different damping situation of each pipeline section in the actual engineering of simulation, thereby is implemented in the systematic air flow balance of certain damping scope.
2. the terminal air balance test simulator of air according to claim 1 is characterized in that:
Said air quantity compartment system comprises a plenum chamber and an air quantity air inlet and five air quantity air outlets.
3. the terminal air balance test simulator of air according to claim 1 is characterized in that:
Said balance pipe is a wing formula balance pipe; Two wing formula balance pipes are linked together by the total head gaging hole of top drilling and the static opening positive and negative crimping hole through a plurality of air conduits and first differential manometer respectively, and first differential manometer can show pressure reduction and calculate face wind speed and air quantity;
Mean wind speed
Wherein, Δ P is the dynamic pressure value; ρ is an atmospheric density; α is a coefficient of flow, decides through experiment according to the shape of wing formula piezometric tube; F is that testing section is long-pending;
is mean wind speed, i.e. airduct face wind speed; Q is an air quantity.
4. the terminal air balance test simulator of air according to claim 1 is characterized in that:
Connect air quantity detection segment and damping analog regulation section respectively before and after the said flexible tube section, regulate differently curved angle and simulate all kinds elbow, damping analog regulation section is connected with pipeline by the orifice plate adjustment sheet, regulates different resistance sizes.
5. the analog detection method of the terminal air balance test simulator of the described air of one of claim 1 to 4 is characterized in that said method comprises the steps:
Air quantity is detected each air outlet that simulation system inserts the air quantity compartment system;
The angle of bend of the flexible tube section through the damping analogue means and the resistance size of damping analog regulation section are simulated the influence of damping to the air quantity compartment system;
Obtain pipeline total head and static pressure by two balance pipes and air conduit, and show its pressure reduction, record the air quantity of pipeline through conversion by first differential manometer;
Record the static opening place by second differential manometer and get static pressure and draw Resistance Value, record that each air outlet air quantity reaches balance in certain damping scope.
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| CN201110431146.8A CN102519703B (en) | 2011-12-20 | 2011-12-20 | Air terminal air volume balance detection analog device and analog detecting method thereof |
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| CN201110431146.8A CN102519703B (en) | 2011-12-20 | 2011-12-20 | Air terminal air volume balance detection analog device and analog detecting method thereof |
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| CN102519703A true CN102519703A (en) | 2012-06-27 |
| CN102519703B CN102519703B (en) | 2014-12-10 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103245792A (en) * | 2013-04-06 | 2013-08-14 | 国家电网公司 | Combined type equalizing pipe wind speed measuring element |
| CN103335773A (en) * | 2013-02-20 | 2013-10-02 | 江苏安邦伟业人工环境有限公司 | Pipeline gas pressure measuring device |
| CN103983313A (en) * | 2014-05-30 | 2014-08-13 | 重庆长厦安基建筑设计有限公司 | Method for determining resistance coefficient of pipe network and method for measuring air volume of pipe network |
| CN104374593A (en) * | 2014-11-18 | 2015-02-25 | 江苏兆胜空调有限公司 | Testing device for wind distributor |
| CN108398251A (en) * | 2018-02-01 | 2018-08-14 | 中国计量大学 | A method of the turbomachine performance curve test based on differential manometer |
| CN108644803A (en) * | 2018-06-12 | 2018-10-12 | 上海意丰机电科技开发有限公司 | A kind of wind powder real-time leveling device and leveling method |
| CN110793115A (en) * | 2019-10-17 | 2020-02-14 | 华润三九（雅安）药业有限公司 | Automatic air quantity measuring and controlling system of clean air conditioning system of pharmaceutical factory |
| CN111859662A (en) * | 2020-07-17 | 2020-10-30 | 泰州市都瑞堡船舶设备有限公司 | Layout method of uniform velocity tube flowmeter in variable air volume air conditioner tail end unit |
| CN111854130A (en) * | 2020-07-15 | 2020-10-30 | 郑州轻工业大学 | Flexible air pipe control device capable of automatically adjusting ventilation quantity |
| CN113587410A (en) * | 2021-07-13 | 2021-11-02 | 无锡地铁集团有限公司 | Air quantity measuring device, subway air conditioning system and control method |
| CN114659206A (en) * | 2022-02-22 | 2022-06-24 | 中国核电工程有限公司 | Balance system capable of regulating and controlling resistance of iodine filter pipeline fan in real time |
| CN118150109A (en) * | 2023-10-12 | 2024-06-07 | 上海建科检验有限公司 | Ventilation resistance simulation device and protection ventilation system with same |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335773A (en) * | 2013-02-20 | 2013-10-02 | 江苏安邦伟业人工环境有限公司 | Pipeline gas pressure measuring device |
| CN103245792A (en) * | 2013-04-06 | 2013-08-14 | 国家电网公司 | Combined type equalizing pipe wind speed measuring element |
| CN103983313A (en) * | 2014-05-30 | 2014-08-13 | 重庆长厦安基建筑设计有限公司 | Method for determining resistance coefficient of pipe network and method for measuring air volume of pipe network |
| CN104374593A (en) * | 2014-11-18 | 2015-02-25 | 江苏兆胜空调有限公司 | Testing device for wind distributor |
| CN108398251A (en) * | 2018-02-01 | 2018-08-14 | 中国计量大学 | A method of the turbomachine performance curve test based on differential manometer |
| CN108644803B (en) * | 2018-06-12 | 2023-09-12 | 上海意丰机电科技开发有限公司 | Real-time leveling device and method for wind powder |
| CN108644803A (en) * | 2018-06-12 | 2018-10-12 | 上海意丰机电科技开发有限公司 | A kind of wind powder real-time leveling device and leveling method |
| CN110793115A (en) * | 2019-10-17 | 2020-02-14 | 华润三九（雅安）药业有限公司 | Automatic air quantity measuring and controlling system of clean air conditioning system of pharmaceutical factory |
| CN111854130A (en) * | 2020-07-15 | 2020-10-30 | 郑州轻工业大学 | Flexible air pipe control device capable of automatically adjusting ventilation quantity |
| CN111854130B (en) * | 2020-07-15 | 2021-09-21 | 郑州轻工业大学 | Flexible air pipe control device capable of automatically adjusting ventilation quantity |
| CN111859662A (en) * | 2020-07-17 | 2020-10-30 | 泰州市都瑞堡船舶设备有限公司 | Layout method of uniform velocity tube flowmeter in variable air volume air conditioner tail end unit |
| CN111859662B (en) * | 2020-07-17 | 2023-09-22 | 泰州市都瑞堡船舶设备有限公司 | Layout method of uniform velocity tube flowmeter in tail end unit of variable-air-volume air conditioner |
| CN113587410A (en) * | 2021-07-13 | 2021-11-02 | 无锡地铁集团有限公司 | Air quantity measuring device, subway air conditioning system and control method |
| CN114659206A (en) * | 2022-02-22 | 2022-06-24 | 中国核电工程有限公司 | Balance system capable of regulating and controlling resistance of iodine filter pipeline fan in real time |
| CN118150109A (en) * | 2023-10-12 | 2024-06-07 | 上海建科检验有限公司 | Ventilation resistance simulation device and protection ventilation system with same |
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Inventor after: Chen Longchi Inventor after: Tang Hongdi Inventor after: Yao Jia Inventor after: Xu Zhong Inventor after: Zhou Jiawei Inventor after: Lu Wei Inventor before: Chen Longchi Inventor before: Tang Hongdi Inventor before: Xu Zhong Inventor before: Zhou Jiawei Inventor before: Lu Wei |
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