CN202209468U - Flow measurement and control device of butterfly valve - Google Patents
Flow measurement and control device of butterfly valve Download PDFInfo
- Publication number
- CN202209468U CN202209468U CN2011202958089U CN201120295808U CN202209468U CN 202209468 U CN202209468 U CN 202209468U CN 2011202958089 U CN2011202958089 U CN 2011202958089U CN 201120295808 U CN201120295808 U CN 201120295808U CN 202209468 U CN202209468 U CN 202209468U
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- valve
- pipeline
- butterfly
- flow measurement
- valve body
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Abstract
The utility model discloses the flow measurement and control device of a butterfly valve, which comprises a valve body and a butterfly plate. The butterfly plate is arranged inside the valve body. The flow measurement and control device is characterized by also comprising a wind differential pressure transmitter, a valve upstream pipeline and a valve downstream pipeline. The positive pressure interface of the wind differential pressure transmitter is connected with the core space of the valve upstream pipeline through a positive pressure adapter. The negative pressure interface of the wind differential pressure transmitter is connected with the core space of the valve downstream pipeline through a negative pressure adapter. The valve upstream pipeline is arranged at the front end of the valve body. The valve downstream pipeline is arranged at the rear end of the valve body. The internal diameter of a sealing ring, the internal diameter of the valve upstream pipeline and the internal diameter of the valve upstream pipeline are equal to each other. The flow measurement and control device of a butterfly valve has the advantages of simple, compact and reasonable structure, good stability, high measuring accuracy and obvious energy-saving effect, which can fully meet the precision requirement of a sewage treatment accurate aeration system on the instant adjustment of the air flow.
Description
Technical field
The utility model relates to a kind of flow measurement and control gear of butterfly valve, specifically is used on the accurate aerating system of sewage treatment accurately measuring and the isolated plant of control air flow, belongs to the mechanical structure technical field.
Background technique
In existing technology; In the accurate aerating system of sewage treatment, all adopt control valve and gas flowmeter to be installed in series, flowmeter is positioned on the export pipeline near control valve; The detected signal feed back of flowmeter is given intelligent automatic control system; By control system will with the corresponding order input control valve of technological requirement, make control valve action realizing instant adjusting, thereby satisfy in the sewage treatment process each stage the demands of different of air mass flow to flow.This flowmeter belongs to the thermal type flowmeter; Its principle is the variation of trying to achieve gas flow through the temperature variation of detecting head; Because the complexity of the motion of the pressure air in the pipeline and the nonuniformity of temperature distribution; Determined the measuring accuracy of this type of flowmeter low, poor stability, can't satisfy the accuracy of accurate aerating system to flow control, do not reach desirable energy-conservation requirement.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, thereby a kind of flow measurement and control gear of butterfly valve are provided, its good stability, and precision is high.
The technological scheme that provides according to the utility model; The flow measurement of butterfly valve and control gear comprise valve body, butterfly plate; In the said valve body butterfly plate is housed, is provided with seal ring in the valve body, characteristic is: also comprise pipeline behind wind differential pressure transmitter, valve preceding pipeline and the valve; The positive pressure interface of said wind differential pressure transmitter is connected through the inner chamber of positive aluminium hydraulic pressed connecting pipe with the valve preceding pipeline; The negative pressure interface of said wind differential pressure transmitter through negative pressure take over valve after the inner chamber of pipeline be connected, said valve preceding pipeline is arranged on the valve body front end, pipeline is arranged on valve rear end behind the valve.
The internal diameter of pipeline equates behind the internal diameter of the internal diameter of said seal ring and valve preceding pipeline and the valve, is equal to pipe diameter D.
Tie point on the said valve preceding pipeline is to the distance A at butterfly plate center and the ratio A/D=0.75-1.5 of pipe diameter D.
Tie point behind the said valve on the pipeline is to the ratio B/D=1-2 apart from B and pipe diameter D at butterfly plate center.
Compared with present technology the utility model has the following advantages:
The utility model is simple in structure, compact, reasonable; Good stability, measuring accuracy height can satisfy the accurate aerating system of sewage treatment fully to the instant required precision of regulating of air mass flow, have remarkable energy saving effect.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Following the utility model will combine accompanying drawing to further describe:
As shown in Figure 1: it comprises that pipeline 5 behind valve body 1, seal ring 2, butterfly plate 3, valve preceding pipeline 4, the valve, wind differential pressure transmitter 6, positive aluminium hydraulic pressed connecting pipe 7, negative pressure take over 8 etc.
The positive pressure interface of said wind differential pressure transmitter 6 is connected with the inner chamber of valve preceding pipeline 4 through positive aluminium hydraulic pressed connecting pipe 7; The negative pressure interface of said wind differential pressure transmitter 6 through negative pressure take over 8 with valve after the inner chamber of pipeline 5 be connected; Said valve preceding pipeline 4 is arranged on valve body 1 front end, and pipeline 5 is arranged on valve body 1 rear end behind the valve.
Be provided with seal ring 2 in the said valve body, the internal diameter of pipeline 5 equates behind the internal diameter of the internal diameter of said seal ring 2 and valve preceding pipeline 4 and the valve, is equal to pipe diameter D.
Tie point on the said valve preceding pipeline 4 is to the distance A at butterfly plate center and the ratio A:D=0.75-1.5:1 of pipe diameter D.
Tie point behind the said valve on the pipeline 5 is to the ratio B:D=1-2:1 apart from B and pipe diameter D at butterfly plate center.
Arrow Q among Fig. 1 is the pressure air flow direction.In the test and engineering practice of accurate aerating system; The aeration rate in each stage (being air mass flow) is different; When technological requirement changes flow; Wind differential pressure transmitter 6 can discern whether according with process requirements of instant flow for intelligent control system, system instant detected signal feed back automatically, and concurrent load instruction makes butterfly plate 3 actions; Aperture until butterfly plate 3 meets command request (butterfly plate 3 rotates to dotted line position along arrow K in like Fig. 1) fully, at this moment the instant flow of ducted air mass flow according with process requirements.
Claims (4)
1. the flow measurement of a butterfly valve and control gear; Comprise valve body (1), butterfly plate (3); Butterfly plate (3) is housed in the said valve body (1); Be provided with seal ring (2) in the valve body (1); It is characterized in that: also comprise pipeline (5) behind wind differential pressure transmitter (6), valve preceding pipeline (4) and the valve, the positive pressure interface of said wind differential pressure transmitter (6) is connected through the inner chamber of positive aluminium hydraulic pressed connecting pipe (7) with valve preceding pipeline (4), and the negative pressure interface of said wind differential pressure transmitter (6) takes over through negative pressure that the inner chamber of pipeline (5) is connected behind (8) and the valve; Said valve preceding pipeline (4) is arranged on valve body (1) front end, and pipeline behind the valve (5) is arranged on valve body (1) rear end.
2. the flow measurement of butterfly valve as claimed in claim 1 and control gear is characterized in that: the internal diameter of pipeline (5) equates behind the internal diameter of the internal diameter of said seal ring (2) and valve preceding pipeline (4) and the valve, is equal to pipe diameter D.
3. the flow measurement of butterfly valve as claimed in claim 1 and control gear, it is characterized in that: the tie point on the said valve preceding pipeline (4) is to the distance A at butterfly plate center and the ratio A/D=0.75-1.5 of pipe diameter D.
4. the flow measurement of butterfly valve as claimed in claim 1 and control gear, it is characterized in that: the tie point on the pipeline behind the said valve (5) is to the ratio B/D=1-2 apart from B and pipe diameter D at butterfly plate center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202958089U CN202209468U (en) | 2011-08-13 | 2011-08-13 | Flow measurement and control device of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202958089U CN202209468U (en) | 2011-08-13 | 2011-08-13 | Flow measurement and control device of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209468U true CN202209468U (en) | 2012-05-02 |
Family
ID=45989015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202958089U Expired - Lifetime CN202209468U (en) | 2011-08-13 | 2011-08-13 | Flow measurement and control device of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209468U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359637A (en) * | 2011-08-13 | 2012-02-22 | 无锡杰尔压缩机有限公司 | Flow measurement and control device of butterfly valve |
| CN102734520A (en) * | 2012-07-10 | 2012-10-17 | 无锡杰尔压缩机有限公司 | V-shaped valve for measuring and controlling flow |
| CN103487314A (en) * | 2013-09-30 | 2014-01-01 | 南京白云化工环境监测有限公司 | Nitrogen blowing instrument with variable gas supply rate |
-
2011
- 2011-08-13 CN CN2011202958089U patent/CN202209468U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359637A (en) * | 2011-08-13 | 2012-02-22 | 无锡杰尔压缩机有限公司 | Flow measurement and control device of butterfly valve |
| CN102734520A (en) * | 2012-07-10 | 2012-10-17 | 无锡杰尔压缩机有限公司 | V-shaped valve for measuring and controlling flow |
| CN103487314A (en) * | 2013-09-30 | 2014-01-01 | 南京白云化工环境监测有限公司 | Nitrogen blowing instrument with variable gas supply rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 214101 No. 38, Qian Lian Road, Xishan Economic Development Zone, Xishan District, Jiangsu, Wuxi Patentee after: JIANGSU GL-TURBO CORPORATION Address before: 214192 Jiangsu Province, Wuxi city Xishan District of Xishan Economic Development Zone in three Furong Road No. 99 building six room 507 zuiun Patentee before: Wuxi Jieer Compressor Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120502 |