CN211231717U - Air volume adjusting device with internal valve - Google Patents

Abstract

The utility model discloses a set up air regulation device of internal valve, including 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 Q_{Main valve}The range of the internal valve is Q_{Internal valve}I.e. Q_{Internal valve}＜Q_{Main valve}. The utility model discloses can improve the regulation precision.

Description

Air volume adjusting device with internal valve

Technical Field

The utility model relates to an air regulation technical field, especially an air regulation device who sets up the 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 conventional air volume adjusting valve adjusts the air volume (the direction of an arrow is the wind direction). The air volume adjustment adjusts the ventilation area in the valve body by controlling the opening degree C of the air volume adjusting valve plate through the air volume adjusting mechanism, so as to realize the air volume adjustment. The adjusting precision of the air volume adjusting valve is related to the adjusting performance of the whole air volume adjusting.

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.

Traditional air regulation device's regulation precision: the accuracy of the air volume adjusting device depends on the air volume of the device under a unit adjusting signal, namely K is equal to delta Q/. DELTA.S, K is the adjusting accuracy of the device, delta Q is the minimum air volume change, and delta S is the minimum adjusting signal.

The minimum signal is the minimum rotation angle Delta A of the device, and is directly driven, and the minimum signal is the minimum adjustment length Delta L of the device. For one air volume adjusting device, the minimum adjusting signals DeltaL and DeltaA are relatively fixed, and how to achieve the minimum DeltaQ air volume is to improve the adjusting precision.

Disclosure of Invention

To the problem that exists among the prior art, the utility model provides a can improve the air regulation device who sets up the internal valve of adjusting the precision.

The purpose of the utility model is realized through 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 Q_{Main valve}The range of the internal valve is Q_{Internal valve}I.e. Q_{Internal valve}＜Q_{Main 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 △ Q_{Main valve}，Q_{Internal valve}≥△Q_{Main valve}。

The adjusting precision K of the air volume adjusting device provided with the internal valve is (Q)_{Main valve}/Q_{Internal valve})*K_{Main valve}。

Compared with the prior art, the utility model has the advantages of: the utility model provides high air regulation device's regulation precision, when the maximum regulation amount of wind (range) of main valve and the ratio of the maximum regulation amount of wind (range) of inner valve and when big, the utility model discloses an it is high more high to adjust the precision.

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 variable signal such as outside pressure humiture is received to coordinated control ware 8, adjusts through return circuit control signal such as PID the utility model discloses a main valve and built-in valve. Realize through the main valve with built-in valve's contact regulation the utility model discloses adjust the high accuracy of the amount of wind. 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 utility model discloses built-in a relatively small-size inner valve in the main valve, when air regulation device reaches predetermined air regulation scope, because air regulation device has △ Q_{Main valve}The adjustment is carried out by using an internal valve built in the device, and the adjustment range is △ Q_{Main valve}At this time, the minimum regulating air quantity △ Q of the internal valve_{Internal valve}Namely, the utility model discloses a minimum regulation amount of wind.

Minimum regulating air quantity of inner valve △ Q_{Internal valve}＝△A_{Internal valve}/A*Q_{Internal valve}。

△A_{Internal valve}Is the minimum regulating angle of the internal valve, A is the full-range regulating angle of the internal valve, Q_{Internal valve}The maximum air volume (range) of the inner valve.

Minimum regulating air quantity of main valve △ Q_{Main valve}＝△A_{Main valve}/A*Q_{Main valve}△ Q adjustment precision_{Main valve}/Q_{Main valve}。

△A_{Main valve}Is the minimum adjustment angle of the main valve, A is the full range adjustment angle of the main valve, Q_{Main valve}The maximum air volume (range) of the main valve.

The utility model has the regulation precision that K is △ Q_{Internal valve}/△A_{Main valve}△ A under the action of the same regulating signal_{Internal valve}≤△A_{Main valve}A is that the full-range adjusting angles of the main valve and the internal valve are consistent, namely K is △ Q_{Internal valve}/△A_{Main valve}(adjusting the angle of the valve plate), in the same way, K is △ Q_{Internal valve}/△L_{Main valve}(adjusting the displacement of the valve core), taking the angle of the valve plate as an example below:

K＝(△A_{internal valve}/A*Q_{Inner valve)}/△A_{Main valve}

△A_{Main valve}＝△Q_{Main valve}/K_{Main valve}

K＝K_{Main valve}*(△A_{Internal valve}/A*Q_{Inner valve)}/(△A_{Main valve}/A*Q_{Main valve}

It can be deduced that,

the utility modelThe adjustment precision of the model is as follows: k ═ Q_{Main valve}/Q_{Internal valve})*K_{Main valve}。

From this it can be seen that, the cross section of main valve is greater than the inner valve cross section, and the ratio of the two biggest amount of wind is greater than 1, the utility model discloses compare with single main valve and improved the regulation precision, when the biggest regulation amount of wind (range) of main valve and the ratio of the interior valve biggest regulation amount of wind (range) and when big, the utility model discloses an it is high more that the regulation precision is high.

When the regulating error of the main valve is △ Q_{Main valve}Maximum regulating air quantity (range) Q of the inner valve_{Internal valve}≥△Q_{Main valve}In 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 utility model discloses receive external control system, realize the amount of wind and adjust at the high accuracy of different within ranges. The main valve accepts the regulation signal of linkage control ware simultaneously with the executor of internal valve, and main valve executor 3 is right according to the aperture of signal conditioning main valve plate 2 the utility model discloses an the amount of wind carries out the bulk governing. 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 Q_{Main valve}The range of the internal valve is Q_{Internal valve}I.e. Q_{Internal valve}＜Q_{Main 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 △ Q_{Main valve}，Q_{Internal valve}≥△Q_{Main 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}/Q_{Internal valve})*K_{Main valve}。

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