CN111059327A - Air volume adjusting device with internal valve - Google Patents
Air volume adjusting device with internal valve Download PDFInfo
- Publication number
- CN111059327A CN111059327A CN201911410492.0A CN201911410492A CN111059327A CN 111059327 A CN111059327 A CN 111059327A CN 201911410492 A CN201911410492 A CN 201911410492A CN 111059327 A CN111059327 A CN 111059327A
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- Prior art keywords
- valve
- main valve
- internal
- air volume
- main
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses an air volume adjusting device with an internal valve, which comprises a main valve, wherein the internal valve is embedded in the main valve, the main valve comprises a main valve body, the internal valve comprises an internal valve body, the cross section of the internal valve body is smaller than that of the main valve body, and the measuring range of the main valve is QMain valveThe range of the internal valve is QInternal valveI.e. QInternal valve＜QMain valve. The invention can improve the adjusting precision.
Description
Technical Field
The invention relates to the technical field of air volume adjustment, in particular to an air volume adjusting device with an internal valve.
Background
The accuracy of air volume regulation in air conditioning systems in industries such as medicine, electronics, operating rooms and food is of great importance to the stable and energy-saving operation of the whole system, the air volume is regulated by regulating the opening of a valve, and the accuracy of air volume regulation by a regulating valve is related to the operation risks such as stability, cross contamination and operating room infection of the whole air conditioning system. The adjustment accuracy of the air volume adjusting device is very important to the whole purification air-conditioning system.
CN207111950U discloses an air regulation valve, including valve body, blade, adjusting gear and rotation axis, the blade is located the cavity of intercommunication valve body both sides exterior space to be connected with the rotation axis, the rotation axis supports on the both sides wall of valve body, the rotation axis passes the lateral wall of valve body at one end, is connected with the adjusting gear who is located the valve body outside, when adjusting gear is rotatory, can drive the rotation axis rotatory, thereby drive the blade rotation, with the angle that opens and shuts of adjusting blade. The opening and closing angle of the blades is adjusted in a split mode by adopting the mutually meshed adjusting gears, so that the flow adjusting range is enlarged, and the adjusting precision is improved.
CN205037522U discloses a high-efficiency air supply outlet convenient for air volume adjustment, which has a box with an air inlet, a high-efficiency filter is disposed in the box, the bottom of the box is provided with an air diffuser, the box is provided with an air volume adjusting mechanism, the air volume adjusting mechanism is connected with an air volume adjusting lever and an air volume adjusting blade, the air volume adjusting blade disposed on the air volume adjusting mechanism is rotated by rotating the air volume adjusting lever, so that the angle of the air volume adjusting blade is changed, and the purpose of adjusting the air volume is achieved. The air volume adjusting structure changes the position and the method of the original air volume adjustment, and integrates the high-efficiency air supply outlet and the air volume adjusting valve into a whole, so that the working strength of debugging workers is greatly reduced when the clean room is debugged, and the sealing problem of the clean room can be effectively prevented.
The existing regulating valve regulates the air quantity (the arrow direction is the wind direction). the air quantity regulation regulates the ventilation area in a regulating valve body by controlling the opening ∠ C of an air quantity regulating valve plate through an air quantity regulating mechanism, so as to realize the regulation of the air quantity.
Under the condition of the prior art, the adjusting precision of the air volume adjusting valve in different working areas is different. The range of working accuracy of different air volume adjusting valves is different, which is determined by the structural performance of the equipment and the characteristics of the air flow.
The adjusting precision of the traditional air volume adjusting device is that the precision of the air volume adjusting device depends on the air volume of the device under a unit adjusting signal, namely K is △ Q/△ S, K is the adjusting precision of the device, △ Q is the minimum air volume change, and △ S is the minimum adjusting signal.
△ S is related to the structural performance of the air volume adjusting device, such as a rotary type air volume adjusting device, the minimum signal is the minimum rotation angle △ A of the device, the minimum signal is the minimum adjusting length △ L of the device, and for a direct drive type air volume adjusting device, the minimum adjusting signals △ L and △ A are relatively fixed, so how to improve the adjusting precision is to achieve the minimum △ Q air volume.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the air volume adjusting device provided with the internal valve, which can improve the adjusting precision.
The purpose of the invention is realized by the following technical scheme.
The utility model provides an air regulation device who sets up internal valve, includes the main valve, the internal valve has been inlayed in the main valve, the main valve includes the main valve body, the internal valve includes the internal valve body, the cross section of internal valve body is less than the cross section of main valve body, the range of main valve is QMain valveThe range of the internal valve is QInternal valveI.e. QInternal valve＜QMain valve。
The main valve body is internally provided with a main valve plate or a main valve core, and the inner valve body is internally provided with an inner valve plate or an inner valve core.
The inner valve is positioned at the upwind position of the valve plate or the valve core of the main valve.
The outer side of the inner valve body is connected with the inner side of the main valve body through a fixing support.
The inner valve plate or the inner valve core is connected with an inner valve actuator, the main valve plate or the main valve core is connected with a main valve actuator, and the inner valve actuator and the main valve actuator are respectively connected with the linkage controller.
The main valve has an adjustment error of △ QMain valve，QInternal valve≥△QMain valve。
The adjusting precision K of the air volume adjusting device provided with the internal valve is (Q)Main valve/QInternal valve)*KMain valve。
Compared with the prior art, the invention has the advantages that: the invention improves the adjusting precision of the air volume adjusting device, and the adjusting precision of the invention is higher when the ratio of the maximum adjusting air volume (measuring range) of the main valve to the maximum adjusting air volume (measuring range) of the inner valve is larger.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the main valve comprises a main valve body 2, a main valve plate 3, a main valve actuator 4, an inner valve body 5, an inner valve plate 6, an inner valve actuator 7, a fixed support 8 and a linkage actuator.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples.
As shown in fig. 1, an air volume adjusting device with an internal valve comprises a main valve body 1, wherein a main valve plate 2 is arranged in the main valve body 1, the internal valve is embedded in the main valve body 1, the cross section of the internal valve is smaller than that of the main valve, and the internal valve is located at the windward position of the main valve plate 2.
The internal valve comprises an internal valve body 4 and an internal valve plate 5, wherein the internal valve plate 5 is arranged in the internal valve body 4.
The outer side of the inner valve body 4 is connected with the inner side of the main valve body 1 through a fixing bracket 7.
The inner valve plate 5 is connected with an inner valve actuator 6, the main valve plate 2 is connected with a main valve actuator 3, and the inner valve actuator 6 and the main valve actuator 3 are respectively connected with a linkage controller 8. The linkage controller 8 receives variable signals such as external pressure, temperature and humidity and adjusts the main valve and the built-in valve of the invention through loop control signals such as PID. The high-precision air quantity regulation of the invention is realized through the communication regulation of the main valve and the built-in valve. The linkage controller 8 receives an external measuring signal and outputs an adjusting signal, and the controller can be an integral matching element of the valve and also can be other controllers or systems such as an external PLC (programmable logic controller), a DDC (direct digital control) and the like.
The invention has a relatively small-sized internal valve built in the main valve, and when the air volume adjusting device reaches the preset air volume adjusting range, the air volume adjusting device exists △ QMain valveThe adjustment is carried out by using an internal valve built in the device, and the adjustment range is △ QMain valveAt this time, the minimum regulating air quantity △ Q of the internal valveInternal valveThe minimum regulating air quantity of the invention is obtained.
Minimum regulating air quantity of inner valve △ QInternal valve＝△AInternal valve/A*QInternal valve。
△AInternal valveIs the minimum regulating angle of the internal valve, A is the full-range regulating angle of the internal valve, QInternal valveThe maximum air volume (range) of the inner valve.
Minimum regulating air quantity of main valve △ QMain valve＝△AMain valve/A*QMain valve△ Q adjustment precisionMain valve/QMain valve。
△AMain valveIs the minimum adjustment angle of the main valve, A is the full range adjustment angle of the main valve, QMain valveThe maximum air volume (range) of the main valve.
The adjusting precision of the invention is that K is △ QInternal valve/△AMain valve△ A under the action of the same regulating signalInternal valve≤△AMain valveA is that the full-range adjusting angles of the main valve and the internal valve are consistent, namely K is △ QInternal valve/△AMain valve(adjusting the angle of the valve plate), in the same way, K is △ QInternal valve/△LMain valve(adjusting the displacement of the valve core), taking the angle of the valve plate as an example below:
K＝(△Ainternal valve/A*QInner valve)/△AMain valve
△AMain valve＝△QMain valve/KMain valve
K＝KMain valve*(△AInternal valve/A*QInner valve)/(△AMain valve/A*QMain valve
It can be deduced that,
the adjusting precision of the invention is as follows: k ═ QMain valve/QInternal valve)*KMain valve。
Therefore, the cross section of the main valve is larger than that of the inner valve, the ratio of the maximum air volume of the main valve to the maximum air volume of the inner valve is larger than 1, the adjusting precision is improved compared with that of a single main valve, and when the ratio of the maximum adjusting air volume (measuring range) of the main valve to the maximum adjusting air volume (measuring range) of the inner valve is larger, the adjusting precision of the invention is higher.
When the regulating error of the main valve is △ QMain valveMaximum regulating air quantity (range) Q of the inner valveInternal valve≥△QMain valveIn this way, the control error of the main valve can only be corrected when the internal valve is controlled, so that the accuracy is higher.
The invention receives an external control system and realizes high-precision adjustment of air quantity in different ranges. The main valve and the actuator of the inner valve receive the adjusting signal of the linkage controller at the same time, and the main valve actuator 3 adjusts the opening of the main valve plate 2 according to the signal to integrally adjust the air quantity of the invention. When the whole device needs to adjust the air volume, an adjusting signal is sent according to the air volume requirement to carry out rough adjustment by opening or closing the main valve plate 2, the air volume is adjusted to be within the required air volume range, and then an adjusting signal is sent according to the air volume or the air pressure requirement to carry out fine adjustment by opening or closing the inner valve plate 5, so that the air volume reaches an accurate air volume value within the required range.
Claims (7)
1. The utility model provides an air volume adjusting device who sets up internal valve, includes the main valve, its characterized in that the internal valve has been inlayed in the main valve, the main valve includes the main valve body, the internal valve includes the internal valve body, the cross section of internal valve body is less than the cross section of main valve body, the range of main valve is QMain valveThe range of the internal valve is QInternal valveI.e. QInternal valve＜QMain valve。
2. The air volume adjusting device provided with the internal valve according to claim 1, wherein a main valve plate or a main valve spool is provided in the main valve body, and an internal valve plate or an internal valve spool is provided in the internal valve body.
3. An air volume adjusting device provided with an internal valve according to claim 2, wherein the internal valve is located on the valve plate of the main valve or on the valve core of the main valve in the air.
4. An air volume adjusting device provided with an internal valve according to claim 1, wherein an outer side of the valve body of the internal valve is connected to an inner side of the valve body of the main valve through a fixing bracket.
5. The air volume adjusting device with the internal valve as claimed in claim 2, wherein the internal valve plate or the internal valve core is connected with an internal valve actuator, the main valve plate or the main valve core is connected with a main valve actuator, and the internal valve actuator and the main valve actuator are respectively connected with the linkage controller.
6. An air volume adjusting device provided with an internal valve according to claim 1 or 2, wherein the adjustment error of the main valve is △ QMain valve，QInternal valve≥△QMain valve。
7. An internal valve-provided air volume adjusting device according to claim 1 or 2, wherein the internal valve-provided air volume adjusting device has an adjustment accuracy K ═ Q (Q)Main valve/QInternal valve)*KMain valve。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410492.0A CN111059327A (en) | 2019-12-31 | 2019-12-31 | Air volume adjusting device with internal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410492.0A CN111059327A (en) | 2019-12-31 | 2019-12-31 | Air volume adjusting device with internal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059327A true CN111059327A (en) | 2020-04-24 |
Family
ID=70305525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911410492.0A Pending CN111059327A (en) | 2019-12-31 | 2019-12-31 | Air volume adjusting device with internal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059327A (en) |
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2019
- 2019-12-31 CN CN201911410492.0A patent/CN111059327A/en active Pending
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