CN201875167U - Air inlet regulating valve with current-stabilizing constant-current characteristic - Google Patents
Air inlet regulating valve with current-stabilizing constant-current characteristic Download PDFInfo
- Publication number
- CN201875167U CN201875167U CN2010205698977U CN201020569897U CN201875167U CN 201875167 U CN201875167 U CN 201875167U CN 2010205698977 U CN2010205698977 U CN 2010205698977U CN 201020569897 U CN201020569897 U CN 201020569897U CN 201875167 U CN201875167 U CN 201875167U
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- valve body
- valve
- needle
- current
- air inlet
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Abstract
The utility model provides an air inlet regulating valve with current-stabilizing constant-current characteristic; the inner part of a valve body is a hollow cavity, and an air inlet is arranged at one side of the valve body; the top part of the hollow cavity inside the valve body is a slope structure, wherein an air outlet is arranged above the slope structure, and the bottom part of the hollow cavity inside the valve body is connected with a valve core; the upper part of the valve needle is a tapered structure and is arranged in the hollow cavity of the valve body; the middle part of the valve needle is in threaded connection with the inner cavity of the valve core through a guide screw thread; and the lower part of the valve needle is extended out of the valve core and is connected with a handwheel. The utility model is an inlet gas regulating valve designed for a sine pressure generating cavity, and the venting flow rate is controlled and regulated but being unlikely to produce unstable air current on the air flow rate regulating part; and the distortion and deformation of the sine pressure wave shape are reduced so that the quality of the sine pressure generator with fixed capacity and variable mass is greatly improved.
Description
Technical field
The utility model relates to a kind of dynamic pressure calibrating installation, is specifically related to a kind of air inlet adjustment valve with current stabilization constant-current characteristics.
Background technique
In the measurement of the dynamic performance of pressure transducer and pressure-measuring system and calibration, measurement and calibration equipment commonly used are sinusoidal dynamic pressure calibrating installations.The sinusoidal pressure generator is the critical piece of sinusoidal dynamic pressure calibrating installation.Sinusoidal pressure generation cavity in the sinusoidal pressure generator is the core component of fixed volume variable-quality sinusoidal pressure generator.The no modulating valve of existing sinusoidal pressure generation cavity inlet can not carry out the adjusting of gas flow, and the fluctuation offset of sinusoidal pressure generation cavity internal pressure waveform of upstream gas is influential.
Summary of the invention
The purpose of this utility model is to provide a kind of air inlet adjustment valve with current stabilization constant-current characteristics that is located at sinusoidal pressure generation cavity inlet.
Realize the technological scheme of the utility model purpose: a kind of air inlet adjustment valve with current stabilization constant-current characteristics, it comprises valve body, spool, needle, gland, pressure ring and handwheel; Valve inner is a cavity, is provided with suction port in valve body one side; Place, cavity top in the valve body is ramp structure, and the ramp structure top is a relief opening, and the cavity bottom place in the valve body connects spool; Needle top is that cone structure places the valve inner cavity, and the needle middle part is threaded with valve core cavity by the guiding screw thread, and spool is extended in the needle bottom, is connected with handwheel.
Aforesaid a kind of air inlet adjustment valve with current stabilization constant-current characteristics, it is with pressure ring in needle bottom and spool joint, and the pressure ring below is fixed on the spool by gland.
Aforesaid a kind of air inlet adjustment valve with current stabilization constant-current characteristics, the cone structure on its described needle top matches with the ramp structure on valve body top; Be provided with seal ring one in the joint of this cone structure and valve body.
Aforesaid a kind of air inlet adjustment valve with current stabilization constant-current characteristics, it is above needle middle part guiding screw thread, be provided with seal ring two with the spool joint.
Aforesaid a kind of air inlet adjustment valve with current stabilization constant-current characteristics, it has several current stabilization holes of circle on the cone structure of needle.
Effect of the present utility model is:
Air inlet adjustment valve with current stabilization constant-current characteristics described in the utility model is the inlet gas modulating valve for the design of sinusoidal pressure generation cavity.The needle of band rectified action has played the current stabilization effect, has reduced the influence of the unstable offset of sinusoidal pressure waveform of suction pressure; Slope valve body relief opening by tapered needle-valve, has been realized the control of extraction flow and adjusting and don't as for producing unsettled air-flow in tolerance adjusting place; Reduced the distortion and the distortion of sinusoidal pressure waveform, the quality of fixed volume variable-quality sinusoidal pressure generator is greatly improved.The utility model also can be used for the gas regulating equipment that other has similar requirement.
Description of drawings
Fig. 1 is the air inlet adjustment valve arrangement schematic representation with current stabilization constant-current characteristics described in the utility model;
Fig. 2 is the valve body structure schematic representation;
Fig. 3 is the needle structural representation.
Among the figure: 1. valve body; 2. spool; 3. needle; 4. seal ring one; 5. pressure ring; 6. gland; 7. handwheel; 8. seal ring two; 9. relief opening; 10. current stabilization hole; 11. guiding screw thread; 12. suction port; 13. ramp structure; 14. cone structure.
Embodiment
Below in conjunction with the drawings and specific embodiments the air inlet adjustment valve with current stabilization constant-current characteristics described in the utility model is further described.
The utility model provides a kind of new air inlet adjustment valve for the sinusoidal dynamic pressure generator of fixed volume variable-quality, and it mainly is made up of parts such as valve body 1, spool 2, needle 3, gland 6, pressure ring 5 and handwheels 7.
As shown in Figure 1 to Figure 3, described valve body 1 inside is cavity, is provided with suction port 12 in valve body 1 one sides, and the place, cavity top in the valve body 1 is ramp structure 13, and ramp structure 13 tops are relief opening 9, and the cavity bottom place in the valve body 1 connects the spool 2 of hollow.
Above needle 3 middle parts guiding screw thread 11, be provided with seal ring 28 with spool 2 joints.Be with pressure ring 5 in needle 3 bottoms and spool 2 joints, pressure ring 5 belows are fixed on the spool 2 by gland 6.Seal ring 28 stops gas to be overflowed from needle 3.3 guiding function of 5 pairs of needles of pressure ring.5 fixations of 6 pairs of pressure rings of gland.
When the air inlet adjustment valve with current stabilization, constant-current characteristics described in the utility model was worked: gas entered valve body from suction port 12, gas flows to valve body relief opening 9 under the rectified action in the current stabilization hole 10 of needle 3, air-flow reaches the purpose of control extraction flow size in the effect that is issued to constant flow rate that cooperates of relief opening 9 with valve body 1 slope by the distance of rotating handwheel 7 adjusting needle 3 cone structures and valve body 1 ramp structure.
Air inlet adjustment valve described in the utility model has designed constant-flow nozzle, flow control device and current stabilization structure, eliminated the influence of the fluctuation offset of sinusoidal pressure generation cavity internal pressure of inlet air flow, improve the distortion factor and the sound amplitude ratio of the sinusoidal pressure waveform that the sinusoidal pressure generator produced, improved the meter characteristic and the calibration range of sinusoidal dynamic pressure calibrating installation.
Claims (5)
1. air inlet adjustment valve with current stabilization constant-current characteristics, it is characterized in that: it comprises valve body (1), spool (2), needle (3), gland (6), pressure ring (5) and handwheel (7); Valve body (1) inside is cavity, is provided with suction port (12) in valve body (1) one side; Place, cavity top in the valve body (1) is ramp structure (13), and ramp structure (13) top is relief opening (9), and the cavity bottom place in the valve body (1) connects spool (2); Needle (3) top is that cone structure (14) places valve body (1) internal cavities, and needle (3) middle part is connected with spool (2) thread in inner cavity by guiding screw thread (11), and spool (2) is extended in needle (3) bottom, is connected with handwheel (7).
2. a kind of air inlet adjustment valve with current stabilization constant-current characteristics according to claim 1 is characterized in that: be with pressure ring (5) in needle (3) bottom and spool (2) joint, pressure ring (5) below is fixed on the spool (2) by gland (6).
3. a kind of air inlet adjustment valve with current stabilization constant-current characteristics according to claim 1 is characterized in that: the cone structure (14) on described needle top matches with the ramp structure (13) on valve body top; Joint at this cone structure (14) and valve body (1) is provided with seal ring one (4).
4. a kind of air inlet adjustment valve with current stabilization constant-current characteristics according to claim 1 is characterized in that: guide screw thread (11) top, be provided with seal ring two (8) with spool (2) joint at needle (3) middle part.
5. a kind of air inlet adjustment valve with current stabilization constant-current characteristics according to claim 1 is characterized in that: have several current stabilization holes (10) of circle on the cone structure (14) of needle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205698977U CN201875167U (en) | 2010-10-20 | 2010-10-20 | Air inlet regulating valve with current-stabilizing constant-current characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205698977U CN201875167U (en) | 2010-10-20 | 2010-10-20 | Air inlet regulating valve with current-stabilizing constant-current characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201875167U true CN201875167U (en) | 2011-06-22 |
Family
ID=44163084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205698977U Expired - Lifetime CN201875167U (en) | 2010-10-20 | 2010-10-20 | Air inlet regulating valve with current-stabilizing constant-current characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201875167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110522982A (en) * | 2019-09-26 | 2019-12-03 | 泰州市久信医疗科技有限公司 | A kind of single-input double-output gas flow adjusting means |
-
2010
- 2010-10-20 CN CN2010205698977U patent/CN201875167U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110522982A (en) * | 2019-09-26 | 2019-12-03 | 泰州市久信医疗科技有限公司 | A kind of single-input double-output gas flow adjusting means |
| CN110522982B (en) * | 2019-09-26 | 2024-02-20 | 泰州市久信医疗科技有限公司 | Single-input double-output gas flow regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |