CN206223392U - A kind of gas flow stepless regulator - Google Patents
A kind of gas flow stepless regulator Download PDFInfo
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- CN206223392U CN206223392U CN201621250990.5U CN201621250990U CN206223392U CN 206223392 U CN206223392 U CN 206223392U CN 201621250990 U CN201621250990 U CN 201621250990U CN 206223392 U CN206223392 U CN 206223392U
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- venturi tube
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- gas flow
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Abstract
The utility model discloses a kind of gas flow stepless regulator, including air inlet pipe and escaping pipe, connected by 16 groups of digital valves between air inlet pipe and escaping pipe, the each group of digital valve includes Venturi tube and magnetic valve, and the throat area of Venturi tube is pressed according to the incremental arrangement of binary system in the valve position of 16 groups of digital valves；Connected by connecting tube between the Venturi tube and magnetic valve, one throat area of increase is the subluxation valve position of the two valves position Venturi tube throat area average between adjacent two binary system valves position.Technology in the utility model efficiently solves the problem that digital combination valve flow Distribution value is discontinuous, some flow targets points control vibration, strengthens experimental safe and improves test efficiency.
Description
Technical field
The invention belongs to the gas flow control device in wind tunnel test, specially gas flow stepless regulator.
Background technology
High-precision control is carried out to gas flow using digital combination valve in wind tunnel test.Digital combination valve is a kind of combination
Formula flow control valve, per railway digital combination valve by a various sizes of Venturi tube and correspondence discharge coefficient solenoid valve block into.
According to binary array, i.e., the Venturi tube throat area of the 1# valves position of digital combination valve is minimum, 2# valves to Venturi tube throat area
The Venturi tube throat area of position is 2 times of 1#, and the Venturi tube throat area of 3# valves position is 4 times of 1# ... ....Digital combination valve
There are ON/OFF two states each valve position.Digital combination valve operation principle is the Wen using the different venturis of switch control of magnetic valve
The flow of pipe, and the gas flow needed for the combination of these venturi tube flows just constitutes experiment.
Digital combination valve it could be theoretically argued that continuously adjusted with binary system minimum step amount, but by the reality processing of Venturi tube
Precision is limited, and flow Distribution value is discontinuous, and partial discharge value cannot be realized；The valve regulation of numeral combination simultaneously has relay special
Property, the time difference that the different magnetic valve of discharge coefficient is opened and closed, for certain some flow to target value, it may appear that
The larger valve position of venturi is frequently opened/is closed, and causes control to vibrate, it is impossible to meet test requirements document.
If a kind of new digital combination valve of design construction, effectively solves flow Distribution value discontinuous, it is to avoid control vibration,
Enhancing experimental safe and raising test efficiency.
The content of the invention
The purpose of the present invention is that a kind of new digital combining structure is set up on the basis of existing system, effectively solves stream
Value distribution is discontinuous, is prevented effectively from the control vibration of some flow targets points.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of gas flow stepless adjustment device, including air inlet pipe and escaping pipe, pass through ten between air inlet pipe and escaping pipe
Six groups of digital valve connections, each group of digital valve includes Venturi tube and magnetic valve, and the valve position of 16 groups of digital valves is by text
The throat area of family name's pipe is incremented by arrangement according to binary system；Connected by connecting tube between the Venturi tube and magnetic valve, adjacent
Two binary system valves position between increase the subluxation valve position that throat area is the two valves position Venturi tube throat area average.
In the above-mentioned technical solutions, the subluxation valve position is arranged on the high-order valve position in binary system valve position, from the 9th group of number
Word valve starts to be the high-order valve position.
In the above-mentioned technical solutions, two or more Venturi tube venturi faces are arranged in the low level valve position in binary system valve position
Product identical valve position carries out redundancy arrangement, and below the 8th group of digital valve is low level valve position.
In the above-mentioned technical solutions, subluxation valve position is increased in the low level valve position in binary system valve position.
In the above-mentioned technical solutions, the connector identical structure in each group of digital valve.
In the above-mentioned technical solutions, when various sizes of Venturi tube is attached with connector, in Venturi tube in connecting tube
Between be provided with sealed connecting component.
In the above-mentioned technical solutions, the sealed connecting component includes being enclosed within the multiple sealings on Venturi tube and in connecting tube
Packing ring, and the retaining mechanism of connection tube outer surface is arranged on, compress the sealing between connecting tube and Venturi tube using retaining mechanism
Packing ring causes that Venturi tube is tightly connected with connecting tube.
In the above-mentioned technical solutions, any group in 16 groups of digital valves can change the Wen of different throat areas
Pipe, carries out different Venturi tube combinations.
A kind of gas flow adjusting method of gas flow stepless adjustment device is：
When control gas flow rises, first by the valve position that Venturi tube throat area is minimum, reused slightly when not enough
Big valve position；
When control gas flow declines, the less valve position of Venturi tube throat area is first shut off, when certain Venturi tube venturi
The larger valve position is just closed when still being unsatisfactory for requiring after all smaller valve position Close All before the larger valve position of area.
Compared with prior art, the beneficial effects of the invention are as follows：
The technology is used first in the digital combination valve equipment of wind tunnel test, and digital combination valve is ensure that in structure
The practicality and versatility of device can be enhanced per road valve position using the Venturi tube of different throat diameters；
The technology efficiently solves the difficulty that digital combination valve flow Distribution value is discontinuous, some flow targets points control vibration
Topic, enhancing experimental safe and raising test efficiency；
The technology efficiently solves magnetic valve frequent movement in digital combination valve, improves service life of equipment.
Brief description of the drawings
Fig. 1 is the structure total figure of the digital combination valve；
Fig. 2 be the digital combination valve all the way valve position structure chart；
Fig. 3 is digital combination valve nozzle throat parameter list；
Wherein：1 is Venturi tube, and 2 is intermediate connection tube, and 3 is magnetic valve.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, being overall system structure figure of the invention, overall topology layout is consistent with traditional layout,
Be managed and escaping pipe between set 16 groups of digital valves be attached, by solenoid valve control so that Venturi tube switch.
In traditional structure, the Venturi tube throat area in 16 groups of digital valves according to binary array, once it is determined that after size, text
Family name manages and is fixedly connected and tracheae between, then controls throughput by controlling electromagnetic valve switch.This structure drawback is non-
Chang Mingxian, when to carry out the combination of different Venturi tubes, this nested structure cannot be applicable, that is to say, that set of system just can only
It is applicable a kind of combination of Venturi tube.
As shown in Fig. 2 and the invention solves the problems that this drawback, connects in one between each Venturi tube and magnetic valve
Between connecting tube, all of intermediate connection tube is designed to unified structure so that intermediate connection tube can be with the Wen of any size
Pipe is attached.The reliability of its connection is can ensure that after being connected with the Venturi tube of any size in order to ensure intermediate connection tube, is needed
To increase sealed connecting component between intermediate connection tube and Venturi tube.In this programme, the bore of intermediate connection tube is designed to
More than the bore of Venturi tube so that intermediate connection tube can be enclosed within Venturi tube, in connection, sealing gasket is first covered on Venturi tube
, then be enclosed within intermediate connection tube on Venturi tube so that seal washer is arranged between intermediate connection tube and Venturi tube, then by circle
A retaining mechanism on the periphery set of intermediate connection tube, compresses intermediate connection tube so that middle by the locking of retaining mechanism
The inner wall compressive seal washer of connecting tube, causes to form close between intermediate connection tube and Venturi tube by the seal washer after compression
The space of envelope.
By this annexation that can be changed, 16 any one of Venturi tube can be caused can to enter
Row is changed at any time, and any junction can connect various sizes of Venturi tube, like this, allows for whole 16 Venturi tubes
Can not be that single one group of binary system is incremented by permutation and combination, there can be various different combinations.
As shown in figure 3, table is set of number combination valve nozzle throat parameter in Fig. 3, wherein No. 6, No. 7, No. 9 valve
Position is redundant valve position, No. 13, No. 15 valve position be subluxation valve position.It should be noted that the table only lists digital combination valve
A kind of Venturi tube combination, needs to be combined using different Venturi tubes completely according to experiment.
So-called redundancy arrangement, i.e., can arrange two or more Venturi tubes on the less valve position of Venturi tube throat area
Throat area identical valve position；Subluxation valve position, i.e., in the two neighboring binary system valve position of the larger valve position of Venturi tube throat area
Between increase the subluxation valve position that throat area is the two valves position Venturi tube throat area average.
According to the gas maximum total flow that experiment needs, most suitable Venturi tube combination is selected to realize, principle is to the greatest extent may be used
Energy ground enables the total flow of digital combination valve using the less Venturi tube of throat area, less with the Venturi tube that throat area is larger
Needed for enough best match experiments, the low level valve position of digital combination valve increases redundancy Venturi tube or increases subluxation Venturi tube, high-order
Valve position increase subluxation Venturi tube, so as to constitute a kind of gas flow stepless regulator.
This gas flow stepless regulator because employing redundant valve position or subluxation valve position, equivalent to increased two
The digit of system, that is to say, that improve the resolution ratio of digital combination valve such that it is able to effectively solve digital combination valve flow value
It is distributed discontinuous problem.
This gas flow stepless regulator, after employing redundant valve position and subluxation valve position, its control software is in control
It is exactly specifically to control on gas flow as far as possible using the less valve position of Venturi tube throat area on strategy and control algolithm
When rising, first by the valve position that Venturi tube throat area is minimum, slightly larger valve position is reused when not enough, by that analogy；Control
When gas flow declines, the less valve position of Venturi tube throat area is first shut off, when the valve that certain Venturi tube throat area is larger
The larger valve position is just closed when still being unsatisfactory for requiring after all smaller valve position Close All before position.Because redundancy or half
The use of position valve position, the Venturi tube throat area of high-order valve position is less than, is even far smaller than all low level valve positions before it
Venturi tube throat area summation, so high-order valve position will not open easily, and once open valve position and will not also close easily, this
Sample avoids high-order valve position in gas flow control process（The larger valve position of Venturi tube throat area）There is frequent ON/OFF,
This is also the main cause for causing control to vibrate, therefore says that this gas flow stepless regulator can be prevented effectively from control and shake
Swing.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of gas flow stepless adjustment device, including air inlet pipe and escaping pipe, pass through 16 between air inlet pipe and escaping pipe
Group digital valve connection, each group of digital valve includes Venturi tube and magnetic valve, and Wen is pressed in the valve position of 16 groups of digital valves
The throat area of pipe is incremented by arrangement according to binary system；It is characterized in that：Connected by connecting tube between the Venturi tube and magnetic valve
Connect, it is the two valves position Venturi tube throat area average that a throat area is increased between adjacent two binary system valves position
Subluxation valve position.
2. a kind of gas flow stepless adjustment device according to claim 1, it is characterised in that the subluxation valve position is set
High-order valve position in binary system valve position, is the high-order valve position since the 9th group of digital valve.
3. a kind of gas flow stepless adjustment device according to claim 2, it is characterised in that in binary system valve position
Two or more Venturi tube throat area identical valve positions are arranged in low level valve position carries out redundancy arrangement, below the 8th group of digital valve
Be the low level valve position.
4. a kind of gas flow stepless adjustment device according to claim 2, it is characterised in that in binary system valve position
Increase subluxation valve position in low level valve position.
5. a kind of gas flow stepless adjustment device according to claim 1, it is characterised in that in each group of digital valve
Connector identical structure.
6. a kind of gas flow stepless adjustment device according to claim 5, it is characterised in that various sizes of Venturi tube
When being attached with connector, sealed connecting component is provided between connecting tube in Venturi tube.
7. a kind of gas flow stepless adjustment device according to claim 6, it is characterised in that the sealed connecting component bag
The multiple seal washers being enclosed within Venturi tube and in connecting tube are included, and is arranged on the retaining mechanism for connecting tube outer surface, utilized
The seal washer that retaining mechanism is compressed between connecting tube and Venturi tube causes that Venturi tube is tightly connected with connecting tube.
8. according to a kind of any described gas flow stepless adjustment device of claim 1 or 5 or 6 or 7, it is characterised in that 16
Any group in the group digital valve Venturi tube that can change different throat areas, carries out different Venturi tube combinations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250990.5U CN206223392U (en) | 2016-11-22 | 2016-11-22 | A kind of gas flow stepless regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250990.5U CN206223392U (en) | 2016-11-22 | 2016-11-22 | A kind of gas flow stepless regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206223392U true CN206223392U (en) | 2017-06-06 |
Family
ID=58790138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621250990.5U Active CN206223392U (en) | 2016-11-22 | 2016-11-22 | A kind of gas flow stepless regulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN206223392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525376A (en) * | 2016-11-22 | 2017-03-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Air flow stepless adjusting device |
| CN117093023A (en) * | 2023-10-20 | 2023-11-21 | 沈阳航天新光集团有限公司 | Flow control device and method based on venturi and electromagnetic valve duty cycle adjustment |
-
2016
- 2016-11-22 CN CN201621250990.5U patent/CN206223392U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525376A (en) * | 2016-11-22 | 2017-03-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Air flow stepless adjusting device |
| CN106525376B (en) * | 2016-11-22 | 2019-04-16 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of gas flow stepless regulator |
| CN117093023A (en) * | 2023-10-20 | 2023-11-21 | 沈阳航天新光集团有限公司 | Flow control device and method based on venturi and electromagnetic valve duty cycle adjustment |
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