CN206522461U - A kind of accurate adjustable gas flow jet pipe - Google Patents
A kind of accurate adjustable gas flow jet pipe Download PDFInfo
- Publication number
- CN206522461U CN206522461U CN201720108792.3U CN201720108792U CN206522461U CN 206522461 U CN206522461 U CN 206522461U CN 201720108792 U CN201720108792 U CN 201720108792U CN 206522461 U CN206522461 U CN 206522461U
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- CN
- China
- Prior art keywords
- gas flow
- jet pipe
- sealing
- adjustable plate
- drive screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
A kind of accurate adjustable gas flow jet pipe, is related to both air flow modulation field；Including apparatus casing, upper end cover, the first erection support, preceding regulation sealing plate, sealing gasket, spout governor motion and compacting sealing mechanism；Upper end cover is fixedly mounted on the outward flange of the stepped groove of apparatus casing；Spout governor motion is fixedly mounted on the medium position at the top of upper end cover；Compacting sealing mechanism is fixedly mounted on the end at the top of upper end cover；Apparatus casing step type bottom portion of groove is provided with preceding regulation sealing plate close to one end of compacting sealing mechanism, and top is installed with sealing gasket；One end of apparatus casing step type bottom portion of groove is provided with the first erection support；Gas flow is solved accurately to control, high-precision flow adjustable jet meets the accurate adjustment of a wide range of gas flow, flow velocity, the flow regulators such as orifice plate, Venturi nozzle are solved the problem of one flow parameter of correspondence is only capable of in the case that pressure is constant, a kind of new device is provided for pipeline gas Flow-rate adjustment.
Description
Technical field
The utility model is related to a kind of both air flow modulation field, particularly a kind of accurate adjustable gas flow jet pipe.
Background technology
Conventional both air flow modulation scheme can be divided into two major classes at present：One class is directly adjusted, another kind of to be adjusted for throttle style
Section.
Directly adjust and typically use flow control valve directly to gather signal as feedback signal using flowmeter, pass through intelligent PID
Control algolithm produces control signal, and driving regulating valve carries out Flow-rate adjustment, and the method system architecture is fairly simple, but by existing
The influence of flow perturbation size before and after gas flowmeter precision and valve, accuracy error is more than 5%, and flow control accuracy is not
It is high.
Another kind of is that throttle style is that multitube assembles conjunction pressure-reducing valve and restricting orifice, the mode combined according to pipeline, decompression
Bleed pressure is down to required pressure by valve, in the effect throttled by restricting orifice, is accurately controlled air mass flow, such a method
Control system is relatively easy, and air flow control precision is high, but device structure is more complicated, can adjust the work shape of flow
State is limited, it is impossible to carry out a wide range of both air flow modulation.
Utility model content
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art to be sprayed there is provided a kind of accurate adjustable gas flow
Pipe, solves gas flow and accurately controls, high-precision flow adjustable jet meets the accurate tune of a wide range of gas flow, flow velocity
Section, solves the flow regulators such as orifice plate, Venturi nozzle and one flow parameter of correspondence is only capable of in the case where pressure is constant
The problem of, provide a kind of new device for pipeline gas Flow-rate adjustment.
Above-mentioned purpose of the present utility model is achieved by following technical solution：
A kind of accurate adjustable gas flow jet pipe, including apparatus casing, upper end cover, the first erection support, preceding regulation sealing
Plate, sealing gasket, spout governor motion and compacting sealing mechanism；Wherein, apparatus casing is located at lowermost end；The top of apparatus casing is set
It is equipped with stepped groove；Upper end cover is fixedly mounted on the outward flange of the stepped groove of apparatus casing, and upper with apparatus casing
Surface is in same level；Spout governor motion is fixedly mounted on the medium position at the top of upper end cover；Compacting sealing mechanism is fixed
End at the top of upper end cover；Before apparatus casing step type bottom portion of groove is provided with close to one end of compacting sealing mechanism
Sealing plate is adjusted, the top of preceding regulation sealing plate is installed with sealing gasket；Apparatus casing step type bottom portion of groove is away from compression
One end of sealing mechanism is provided with the first erection support.
In a kind of above-mentioned accurate adjustable gas flow jet pipe, the contact position of the apparatus casing and upper end cover is fixed
Sealing ring is installed, sealing ring is polytetrafluoroethylmaterial material.
In a kind of above-mentioned accurate adjustable gas flow jet pipe, first erection support is provided with two ends in the middle of circular arc
For the through hole of rectangle；Wherein, rectangle length is 28-32mm；The radius of two ends circular arc is 4.5-5.5mm.
In a kind of above-mentioned accurate adjustable gas flow jet pipe, described spout governor motion and compacting sealing mechanism difference
Including handwheel, drive screw, support frame, sealing gland and sealed base；Wherein, sealed base is fixedly mounted on the upper of upper end cover
Surface；Support frame is fixedly mounted on the upper end of sealed base；Handwheel level is fixedly mounted on the upper end of support frame；Drive screw is erected
The center of handwheel directly is fixedly mounted on, and is passed down through sealed base and stretches into end cap；Transmission spiral shell is realized by rotation hand wheel
Bar is axially vertically movable；The contact position of sealed base and drive screw is installed with sealing gland.
The bottom of drive screw is fixed in a kind of above-mentioned accurate adjustable gas flow jet pipe, the compacting sealing mechanism
Preceding adjustable plate is installed；The bottom of drive screw is installed with aft ramp in spout governor motion；One end of preceding adjustable plate
Contacted with sealing gasket；One end of aft ramp and another end in contact of preceding adjustable plate；The other end of aft ramp and first is installed
Bearing is contacted.
In a kind of above-mentioned accurate adjustable gas flow jet pipe, the preceding adjustable plate horizontal positioned, one end of preceding adjustable plate
It is fixedly connected by the 3rd gear pin with the bottom of drive screw in compacting sealing mechanism, adjustable plate is close with compressing before realizing
The vertical motion of drive screw in sealing mechanism, and preceding adjustable plate are rotated around the 3rd gear pin；
The aft ramp horizontal positioned, one end of aft ramp is fixed by the first gear pin with the first erection support
Connection, realizes that one end of aft ramp is moved along the through hole in the first erection support；
The contact position of preceding adjustable plate and aft ramp passes through the second gear pin and the drive screw of spout governor motion
Bottom is fixedly connected；Vertical fortune is done with the drive screw of spout governor motion in one end that adjustable plate is contacted with aft ramp before realizing
It is dynamic, and rotated around the second gear pin.
In a kind of above-mentioned accurate adjustable gas flow jet pipe, one end that the preceding adjustable plate is contacted with sealing gasket is circular arc
Structure, the radius of circular arc is 28-30mm；One end that preceding adjustable plate is contacted with aft ramp is that the radius of arc structure circular arc is
28-30mm。
In a kind of above-mentioned accurate adjustable gas flow jet pipe, one end that the aft ramp is contacted with preceding adjustable plate is circle
Arc structure, arc radius is 16-18mm.
In a kind of above-mentioned accurate adjustable gas flow jet pipe, adjustable jet longitudinal direction venturi size L adjustable ranges are 30-
100mm, degree of regulation is ± 0.1mm
The utility model has the following advantages that compared with prior art：
(1) the utility model employs the mode that handwheel and drive screw be engaged and realizes the accurate of venturi adjustable plate displacement
Regulation, improves degree of regulation, realizes the accurate control of throat area；
(2) the utility model is coordinated between employing front and rear adjustable plate by arc transition, improve front and rear adjustable plate it
Between sealing, realize rounding off, improve the stability of gas flow control；
(3) the utility model, which is employed, is provided with gear pin on aft ramp, realize automatically adjusting for aft ramp,
Simplify structure and control；
(4) preceding adjustable plate, using sealed mode is compressed after first adjustment position, simplifies sealing mechanism in the utility model.
Brief description of the drawings
Fig. 1 is the utility model adjustable flow jet pipe schematic diagram；
Fig. 2 is schematic diagram after the regulation of the utility model adjustable flow jet pipe.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
It is adjustable flow jet pipe schematic diagram as shown in Figure 1, as seen from the figure, a kind of accurate adjustable gas flow jet pipe, including
Apparatus casing 1, upper end cover 2, the first erection support 9, preceding regulation sealing plate 15, sealing gasket 16, spout governor motion 17 and compression
Sealing mechanism 18；Wherein, apparatus casing 1 is located at lowermost end；The top of apparatus casing 1 is provided with stepped groove；Upper end cover 2 is consolidated
Dingan County is on the outward flange of the stepped groove of apparatus casing 1, and with the upper surface of apparatus casing 1 in same level；Equipment
The contact position of housing 1 and upper end cover 2, is installed with sealing ring 8, and sealing ring 8 is polytetrafluoroethylmaterial material；Spout is adjusted
Mechanism 17 is fixedly mounted on the medium position at the top of upper end cover 2；Compacting sealing mechanism 18 is fixedly mounted on the one of the top of upper end cover 2
At end；The stepped bottom portion of groove of apparatus casing 1 is provided with preceding regulation sealing plate 15 close to one end of compacting sealing mechanism 18, preceding to adjust
The top of section sealing plate 15 is installed with sealing gasket 16；The stepped bottom portion of groove of apparatus casing 1 is away from compacting sealing mechanism 18
One end be provided with the first erection support 9.
Wherein, the through hole that it is rectangle in the middle of circular arc that the first erection support 9, which is provided with two ends to be,；Wherein, rectangle length is 28-
32mm；The radius of two ends circular arc is 4.5-5.5mm.
Spout governor motion 17 and compacting sealing mechanism 18 include handwheel 3, drive screw 4, support frame 5, sealing pressure respectively
Lid 6 and sealed base 7；Wherein, sealed base 7 is fixedly mounted on the upper surface of upper end cover 2；Support frame 5 is fixedly mounted on sealing
The upper end of base 7；The level of handwheel 3 is fixedly mounted on the upper end of support frame 5；Drive screw 4 is fixedly mounted on handwheel 3 vertically
Center, and be passed down through sealed base 7 and stretch into end cap 2；Realize that drive screw 4 is axially vertically movable by rotation hand wheel 3；
The contact position of sealed base 7 and drive screw 4 is installed with sealing gland 6.
Wherein, adjustable plate 13 before the bottom of drive screw 4 is installed with compacting sealing mechanism 18, the preceding water of adjustable plate 13
The bottom of drive screw 4 is installed with aft ramp 11 in placing flat, spout governor motion 17, and the level of aft ramp 11 is put
Put；One end of preceding adjustable plate 13 is contacted with sealing gasket 16；One end of aft ramp 11 and another end in contact of preceding adjustable plate 13；Afterwards
The other end of adjustable plate 11 is contacted with the first erection support 9.
The bottom that one end of preceding adjustable plate 13 passes through the 3rd gear pin 14 and drive screw 4 in compacting sealing mechanism 18
It is fixedly connected, adjustable plate 13 is with the vertical motion of drive screw 4 in compacting sealing mechanism 18, and preceding adjustable plate 13 before realizing
Rotated around the 3rd gear pin 14；One end of aft ramp 11 is fixed by the first gear pin 10 with the first erection support 9
Connection, realizes that one end of aft ramp 11 is moved along the through hole in the first erection support 9；Preceding adjustable plate 13 and aft ramp 11
Contact position is fixedly connected by the second gear pin 12 with the bottom of drive screw 4 of spout governor motion 17；Adjusted before realizing
Vertical motion is done in one end that plate 13 is contacted with aft ramp 11 with the drive screw 4 of spout governor motion 17, and around second
Gear pin 12 is rotated.
In addition, one end that preceding adjustable plate 13 is contacted with sealing gasket 16 is arc structure, the radius of circular arc is 28-30mm；Before
Adjustable plate 13 is 28-30mm with the radius that one end that aft ramp 11 is contacted is arc structure circular arc；Aft ramp 11 is adjusted with preceding
The one end for saving the contact of plate 13 is arc structure, and arc radius is 16-18mm.
Mechanical work principle：
According to air force principle, the air mass flow G and stagnation pressure P after pressure regulator valve in circulation passage0, stagnation temperature T0, jet pipe larynx
Area A and velocity coeffficient λ have certain functional relation in road, and it meets following formula：
When bleed pressure is constant, the purpose of control gas flow can be reached by changing nozzle throat area A.According to required
Flow and known pressure calculate a nozzle throat area A, can be drawn further according to area formula and change venturi position
Desired value.
The course of work：
Handwheel 3 in swiveling jet nozzle governor motion 17 so that the drive screw 4 on spout governor motion 17 is moved downward,
After drive screw 4 reaches the target location of venturi, stop the rotation handwheel 3, and preceding adjustable plate 13 can be with first during regulation
Gear pin 10 is fulcrum, and aft ramp 11 can be that fulcrum is moved downward simultaneously with the drive screw 4 of swiveling jet nozzle governor motion 17,
At this moment preceding regulation sealing plate 15 can be separated with preceding adjustable plate 13, now adjust the handwheel 3 of compacting sealing mechanism 18 so that compress close
Drive screw 4 on sealing mechanism 18 is moved downward, until preceding adjustable plate 13 is brought into close contact with sealing gasket 16, it is possible to achieve sealing work(
Energy.First gear pin 10 is fixed with aft ramp 11, and is moved with aft ramp 11, the first gear pin 10 move when due to
Second erection support 14 through hole limitation can only in the horizontal direction on move forward and backward.
Drving sprial for making precise motion, will not only transmit motion and power, what is had will also accurately transmit displacement
Or position, helical line error, pitch error, central diameter dimensional variations amount, deviation of angle of thread of screw rod etc. propose to be strict with.Can
Adjust the longitudinal venturi size L of jet pipe can between 100mm to 30mm accurate adjustment, degree of regulation can reach ± 0.1mm.
The content not being described in detail in the utility model specification belongs to the known technology of those skilled in the art.
Claims (9)
1. a kind of accurate adjustable gas flow jet pipe, it is characterised in that：Installed including apparatus casing (1), upper end cover (2), first
Bearing (9), preceding regulation sealing plate (15), sealing gasket (16), spout governor motion (17) and compacting sealing mechanism (18)；Wherein,
Apparatus casing (1) is located at lowermost end；The top of apparatus casing (1) is provided with stepped groove；Upper end cover (2), which is fixedly mounted on, to be set
On the outward flange of the stepped groove of standby housing (1), and with the upper surface of apparatus casing (1) in same level；Spout adjusts machine
Structure (17) is fixedly mounted on the medium position at the top of upper end cover (2)；Compacting sealing mechanism (18) is fixedly mounted on upper end cover (2) top
The end in portion；It is close that apparatus casing (1) step type bottom portion of groove is provided with preceding regulation close to one end of compacting sealing mechanism (18)
Shrouding (15), the top of preceding regulation sealing plate (15) is installed with sealing gasket (16)；Apparatus casing (1) step type bottom portion of groove
One end away from compacting sealing mechanism (18) is provided with the first erection support (9).
2. a kind of accurate adjustable gas flow jet pipe according to claim 1, it is characterised in that：The apparatus casing (1)
With the contact position of upper end cover (2), sealing ring (8) is installed with, sealing ring (8) is polytetrafluoroethylmaterial material.
3. a kind of accurate adjustable gas flow jet pipe according to claim 2, it is characterised in that：First erection support
(9) two ends are provided with to be the through hole for being rectangle in the middle of circular arc；Wherein, rectangle length is 28-32mm；The radius of two ends circular arc is
4.5-5.5mm。
4. a kind of accurate adjustable gas flow jet pipe according to claim 3, it is characterised in that：Described spout regulation machine
Structure (17) and compacting sealing mechanism (18) include handwheel (3), drive screw (4), support frame (5), sealing gland (6) and close respectively
Back cover seat (7)；Wherein, sealed base (7) is fixedly mounted on the upper surface of upper end cover (2)；Support frame (5) is fixedly mounted on sealing
The upper end of base (7)；Handwheel (3) level is fixedly mounted on the upper end of support frame (5)；Drive screw (4) is fixedly mounted on vertically
The center of handwheel (3), and be passed down through sealed base (7) and stretch into end cap (2)；Transmission spiral shell is realized by rotation hand wheel (3)
Bar (4) is axially vertically movable；The contact position of sealed base (7) and drive screw (4) is installed with sealing gland (6).
5. a kind of accurate adjustable gas flow jet pipe according to claim 4, it is characterised in that：The compacting sealing mechanism
(18) bottom of drive screw (4) is installed with preceding adjustable plate (13) in；Drive screw (4) in spout governor motion (17)
Bottom is installed with aft ramp (11)；One end of preceding adjustable plate (13) is contacted with sealing gasket (16)；Aft ramp (11)
One end and another end in contact of preceding adjustable plate (13)；The other end of aft ramp (11) is contacted with the first erection support (9).
6. a kind of accurate adjustable gas flow jet pipe according to claim 5, it is characterised in that：The preceding adjustable plate (13)
Horizontal positioned, one end of preceding adjustable plate (13) passes through drive screw in the 3rd gear pin (14) and compacting sealing mechanism (18)
(4) bottom is fixedly connected, and adjustable plate (13) is with the vertical fortune of drive screw (4) in compacting sealing mechanism (18) before realizing
Move, and preceding adjustable plate (13) is rotated around the 3rd gear pin (14)；
Installed by the first gear pin (10) with first aft ramp (11) horizontal positioned, one end of aft ramp (11)
Bearing (9) is fixedly connected, and realizes that one end of aft ramp (11) is moved along the through hole in the first erection support (9)；
Preceding adjustable plate (13) and the contact position of aft ramp (11) pass through the second gear pin (12) and spout governor motion
(17) drive screw (4) bottom is fixedly connected；One end that adjustable plate (13) is contacted with aft ramp (11) before realizing is with spout
The drive screw (4) of governor motion (17) does vertical motion, and is rotated around the second gear pin (12).
7. a kind of accurate adjustable gas flow jet pipe according to claim 6, it is characterised in that：The preceding adjustable plate (13)
The one end contacted with sealing gasket (16) is arc structure, and the radius of circular arc is 28-30mm；Preceding adjustable plate (13) and aft ramp
(11) one end of contact is that the radius of arc structure circular arc is 28-30mm.
8. a kind of accurate adjustable gas flow jet pipe according to claim 7, it is characterised in that：The aft ramp (11)
The one end contacted with preceding adjustable plate (13) is arc structure, and arc radius is 16-18mm.
9. a kind of accurate adjustable gas flow jet pipe according to one of claim 1-8, it is characterised in that：Adjustable jet is indulged
It is 30-100mm to venturi size L adjustable ranges, degree of regulation is ± 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720108792.3U CN206522461U (en) | 2017-02-06 | 2017-02-06 | A kind of accurate adjustable gas flow jet pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720108792.3U CN206522461U (en) | 2017-02-06 | 2017-02-06 | A kind of accurate adjustable gas flow jet pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206522461U true CN206522461U (en) | 2017-09-26 |
Family
ID=59890300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720108792.3U Withdrawn - After Issue CN206522461U (en) | 2017-02-06 | 2017-02-06 | A kind of accurate adjustable gas flow jet pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206522461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641302A (en) * | 2017-02-06 | 2017-05-10 | 中国航天空气动力技术研究院 | Precise and adjustable gas flow spray pipe |
-
2017
- 2017-02-06 CN CN201720108792.3U patent/CN206522461U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641302A (en) * | 2017-02-06 | 2017-05-10 | 中国航天空气动力技术研究院 | Precise and adjustable gas flow spray pipe |
| CN106641302B (en) * | 2017-02-06 | 2020-05-12 | 中国航天空气动力技术研究院 | Accurate adjustable gas flow spray tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170926 Effective date of abandoning: 20200512 |
|
| AV01 | Patent right actively abandoned |