CN102287560A - Device for measuring and controlling flow of rhombic valve - Google Patents
Device for measuring and controlling flow of rhombic valve Download PDFInfo
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- CN102287560A CN102287560A CN 201110233195 CN201110233195A CN102287560A CN 102287560 A CN102287560 A CN 102287560A CN 201110233195 CN201110233195 CN 201110233195 CN 201110233195 A CN201110233195 A CN 201110233195A CN 102287560 A CN102287560 A CN 102287560A
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Abstract
The invention discloses a device for measuring and controlling flow of a rhombic valve, and the device comprises a valve body and a butterfly plate and is characterized by comprising a wind differential pressure transmitter, a valve front pipeline and a valve rear pipeline, wherein the positive pressure interface of the wind differential pressure transmitter is mutually connected with the inner cavity of the valve front pipeline by virtue of a positive pressure connecting pipe, and the negative pressure interface of the wind differential pressure transmitter is mutually connected with the inner cavity of the valve rear pipeline by virtue of a negative pressure connecting pipe; the valve front pipeline is arranged on the front end of the valve body, and the valve rear pipeline is arranged on the rear end of the valve body; and a runner formed by a valve plate and the valve body is square, two peaks of the square are positioned on the highest point and lowest point of the open-closure direction of the valve plate, and the maximum value of the diagonal length is equal to the inner diameter of the valve front pipeline or valve rear pipeline. The device provided by the invention has the advantages that the structure is simple, compact and reasonable; the stability is good, the flow regulating range is large, and the measuring accuracy is high; and the instant regulating requirement of a waste water disposal precision aerating system on the air mass flow is fully met, and the energy-saving effect is obvious.
Description
Technical field
The present invention relates to a kind of flow measurement and control gear of rhombus valve, specifically be used for accurately measuring and controlling on the accurate aerating system of sewage treatment the isolated plant of air mass flow, belong 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 near on the export pipeline of 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 different requirements 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 by 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, not reach desirable energy-conservation requirement flow control.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby a kind of flow measurement and control gear of rhombus valve, its good stability, precision height are provided.
According to technological scheme provided by the invention, the flow measurement of rhombus valve and control gear comprise valve body, butterfly plate, in the described valve body butterfly plate is housed, feature is: also comprise pipeline behind wind differential pressure transmitter, valve preceding pipeline and the valve, the positive pressure interface of described wind differential pressure transmitter is connected by the inner chamber of positive aluminium hydraulic pressed connecting pipe with the valve preceding pipeline, the negative pressure interface of described wind differential pressure transmitter is taken over the inner chamber of pipeline behind the valve by negative pressure and is connected, described valve preceding pipeline is arranged on the valve body front end, and pipeline is arranged on valve rear end behind the valve; The runner that described valve plate and valve body form is square, and foursquare wherein two summits are positioned on the highs and lows of keying direction of valve plate, and the maximum value of catercorner length equals internal diameter of the pipeline D behind valve preceding pipeline or the valve.
The tie point of described valve preceding pipeline is arranged on pipeline center's face vertical with the keying direction of valve plate, and with the axial distance of the median plane of valve plate be X.
Tie point behind the described valve on the pipeline is arranged on pipeline center's face vertical with the keying direction of valve plate, and with the axial distance of valve plate median plane be X.
Ratio X/D of internal diameter of the pipeline D is smaller or equal to 1 behind described axial distance X and valve preceding pipeline or the valve.Described valve plate is plate shaped, and valve plate thickness W is not more than 20mm.
Compared with the prior art the present invention has the following advantages:
The present invention is simple in structure, compact, reasonable; Good stability, flow adjustment range is big, measuring accuracy is high, can satisfy the accurate aerating system of sewage treatment fully to the instant requirement of regulating of air mass flow, has remarkable energy saving effect.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Embodiment
Following the present invention will be further described in conjunction with the accompanying drawings:
As Fig. 1, Fig. 2, shown in Figure 3: it comprises that pipeline 5 behind valve body 1, seal ring 2, valve 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.
In the described valve body 1 valve plate 3 is housed, valve body 1 is provided with seal ring 2.The positive pressure interface of described wind differential pressure transmitter 6 is connected with the inner chamber of valve preceding pipeline 4 by positive aluminium hydraulic pressed connecting pipe 7, the negative pressure interface of described wind differential pressure transmitter 6 is taken over 8 by negative pressure and is connected with the inner chamber of pipeline 5 behind the valve, described 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.Described valve plate 3 is plate shaped, valve plate thickness W generally is not more than 20mm, valve plate 3 is square with the runner that valve body 1 forms, foursquare wherein two summits are positioned on the highs and lows of keying direction of valve plate 3, and the maximum value of catercorner length equals pipeline 5 inside diameter D behind valve preceding pipeline 4 or the valve.
The tie point of described valve preceding pipeline 4 is arranged on pipeline center's face vertical with the keying direction of valve plate 3, and with the axial distance of the median plane of valve plate 3 be X.Tie point behind the described valve on the pipeline 5 is arranged on pipeline center's face vertical with the keying direction of valve plate 3, and with the axial distance of valve plate 3 median planes be X.Ratio X/the D of pipeline 5 inside diameter D is smaller or equal to 1 behind axial distance X and valve preceding pipeline 4 or the valve.
Arrow Q 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, differential pressure transmitter 6 is given intelligent control system with instant detected signal feed back, system can discern instant flow automatically and whether meet technological requirement, and the transmission instruction moves up and down valve plate 3, aperture until valve plate 3 meets command request (valve plate 3 moves to dotted line position in as Fig. 3) fully, and this moment, ducted air mass flow met the instant flow of technological requirement.
Claims (5)
1. the flow measurement of a rhombus valve and control gear, comprise valve body (1), butterfly plate (3), butterfly plate (3) is housed in the described valve body (1), it is characterized in that: also comprise wind differential pressure transmitter (6), pipeline (5) behind valve preceding pipeline (4) and the valve, the positive pressure interface of described wind differential pressure transmitter (6) is connected by the inner chamber of positive aluminium hydraulic pressed connecting pipe (7) with valve preceding pipeline (4), the negative pressure interface of described wind differential pressure transmitter (6) takes over by negative pressure that the inner chamber of pipeline (5) is connected behind (8) and the valve, described 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; Described valve plate (3) is square with the runner that valve body (1) forms, foursquare wherein two summits are positioned on the highs and lows of keying direction of valve plate (3), and the maximum value of catercorner length equals pipeline (5) inside diameter D behind valve preceding pipeline (4) or the valve.
2. the flow measurement of rhombus valve as claimed in claim 1 and control gear, it is characterized in that: the tie point of described valve preceding pipeline (4) is arranged on pipeline center's face vertical with the keying direction of valve plate (3), and with the axial distance of the median plane of valve plate (3) be X.
3. the flow measurement of rhombus valve as claimed in claim 1 and control gear, it is characterized in that: the tie point on the pipeline behind the described valve (5) is arranged on pipeline center's face vertical with the keying direction of valve plate (3), and with the axial distance of valve plate (3) median plane be X.
4. as the flow measurement and the control gear of claim 2 or 3 described rhombus valves, it is characterized in that: the ratio X/D of pipeline (5) inside diameter D is smaller or equal to 1 behind described axial distance X and valve preceding pipeline (4) or the valve.
5. the flow measurement of rhombus valve as claimed in claim 1 and control gear is characterized in that: described valve plate (3) is plate shaped, and valve plate (3) thickness W is not more than 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110233195 CN102287560A (en) | 2011-08-13 | 2011-08-13 | Device for measuring and controlling flow of rhombic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110233195 CN102287560A (en) | 2011-08-13 | 2011-08-13 | Device for measuring and controlling flow of rhombic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287560A true CN102287560A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110233195 Pending CN102287560A (en) | 2011-08-13 | 2011-08-13 | Device for measuring and controlling flow of rhombic valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102287560A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3134171C2 (en) * | 1981-08-28 | 1986-02-06 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Switching device in a range group transmission |
| CN88203650U (en) * | 1988-03-03 | 1988-09-07 | 中国建筑科学研究院空气调节研究所 | Balancing valve and its special intelligent instrument |
| CN201014015Y (en) * | 2007-03-27 | 2008-01-30 | 王晓松 | Electronic type dynamic balancing electric regulating valve |
| CN101576168A (en) * | 2009-03-19 | 2009-11-11 | 广东联塑科技实业有限公司 | Gate valve structure |
| CN102003541A (en) * | 2010-10-13 | 2011-04-06 | 无锡杰尔压缩机有限公司 | Sewage treatment aeration flow regulating valve |
-
2011
- 2011-08-13 CN CN 201110233195 patent/CN102287560A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3134171C2 (en) * | 1981-08-28 | 1986-02-06 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Switching device in a range group transmission |
| CN88203650U (en) * | 1988-03-03 | 1988-09-07 | 中国建筑科学研究院空气调节研究所 | Balancing valve and its special intelligent instrument |
| CN201014015Y (en) * | 2007-03-27 | 2008-01-30 | 王晓松 | Electronic type dynamic balancing electric regulating valve |
| CN101576168A (en) * | 2009-03-19 | 2009-11-11 | 广东联塑科技实业有限公司 | Gate valve structure |
| CN102003541A (en) * | 2010-10-13 | 2011-04-06 | 无锡杰尔压缩机有限公司 | Sewage treatment aeration flow regulating valve |
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Application publication date: 20111221 |