CN204027618U - A kind of flow measurement device that is installed in parallel areal survey wide range ratio - Google Patents
A kind of flow measurement device that is installed in parallel areal survey wide range ratio Download PDFInfo
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- CN204027618U CN204027618U CN201420144534.7U CN201420144534U CN204027618U CN 204027618 U CN204027618 U CN 204027618U CN 201420144534 U CN201420144534 U CN 201420144534U CN 204027618 U CN204027618 U CN 204027618U
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- flowmeter
- stop valve
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Abstract
A kind of flow measurement device that is installed in parallel areal survey wide range ratio, comprise process pipeline and be arranged in parallel First flowmeter thereon, second flowmeter, the front end of First flowmeter, second flowmeter is installed on respectively the first stop valve, the second stop valve with corresponding same bore; The first stop valve is that open type, the second stop valve are closed type; The measurement lower limit of second flowmeter is a little less than the measurement upper limit of First flowmeter.Automatically detect by PLC controller the uninterrupted of process pipeline of flowing through, and the first stop valve, the second stop valve are carried out to chain control: in the time of low section of flow, adopt First flowmeter survey; In the time of high section flow, adopt second flowmeter survey.The beneficial effects of the utility model: effectively improve the range ratio of flow measurement device, accuracy of measurement is high, are applicable to carrying out the energy medium metering of wide-measuring range; Simple and convenient, practical reliable, that feasibility is controlled in operation is high.
Description
Technical field
The utility model relates to the wide range unit rate of flow fields of measurement of energy medium metering, is specifically related to a kind of flow measurement device that is installed in parallel areal survey wide range ratio.
Background technology
Energy medium metering is the important step of production management and cost control, and flow measurement device is the main tool of carrying out energy medium metering.In the situation that bore is certain, although various flow measurement device due to the difference of measuring principle or mode, its range ratio respectively has gap, all has certain limit.Carrying out energy medium metering, when particularly medium house steward measures, the asynchronism(-nization) using due to each user media walks, and there is peak-low ebb phenomenon, rate-of flow fluctuation range is very large, the range ability that often exceeds the current conventional flow measurement device using, causes measuring accurately it.Therefore, be necessary to improve the range ratio of flow measurement device, to meet the energy medium measuring requirement that carries out wide-measuring range.
Summary of the invention
The technical problems to be solved in the utility model is, for existing energy medium metering above shortcomings, a kind of flow measurement device that is installed in parallel areal survey wide range ratio is provided, effectively improve the range ratio of flow measurement device, accuracy of measurement is high, meets the energy medium measuring requirement that carries out wide-measuring range.
The utility model for solving the problems of the technologies described above adopted technical scheme is:
A kind of flow measurement device that is installed in parallel areal survey wide range ratio, comprise process pipeline and First flowmeter, second flowmeter is thereon set, described First flowmeter, second flowmeter are installed in parallel, and the front end of First flowmeter is installed on and its first stop valve with bore, the front end of second flowmeter is installed on and its second stop valve with bore; Described the first stop valve is that open type, the second stop valve are closed type; The measurement lower limit of described second flowmeter is a little less than the measurement upper limit of First flowmeter.
Press such scheme, the measurement range of described First flowmeter is determined according to the lower limit of process pipeline flow measurement range, the lower limit of process pipeline flow measurement range is positioned at the measurement range of First flowmeter, and the measurement upper limit of described second flowmeter is corresponding consistent with the upper limit of process pipeline flow measurement range.
Press such scheme, the unlocking condition of described the first stop valve is: the flow of the process pipeline of flowing through is lower than the measurement lower limit of second flowmeter, and the condition of closing of the first stop valve is: the flow of the process pipeline of flowing through is higher than the First flowmeter survey upper limit; The unlocking condition of described the second stop valve is: the flow of the process pipeline of flowing through is higher than the First flowmeter survey upper limit, the condition of closing of the second stop valve is: the flow of the process pipeline of flowing through lower than second flowmeter survey lower limit (when the flow that records the process pipeline of flowing through higher than First flowmeter survey in limited time, the first stop valve becomes closed condition, the second stop valve from the normally closed opening that becomes from often opening).
Press such scheme, described First flowmeter, second flowmeter are vortex shedding flow meter.
Press such scheme, the bore of described First flowmeter is to be limited to 1500m in DN100, measurement
3/ h; The bore of described second flowmeter is that DN300, measurement lower limit are 1300m
3in/h, measurement, be limited to 12000m
3/ h.
Press such scheme, the upstream and downstream of described First flowmeter, second flowmeter arrange respectively upstream straight length, downstream straight length, and upstream straight length caliber DN15, downstream straight length caliber DN5.
Press such scheme, described the first stop valve, the second stop valve all adopt cage guidance type single seat pneumatic cut-off valve.
Press such scheme, described second flowmeter replaces with that multistage is installed in parallel, the flowmeter of different flow measurement range, the measurement bound design of each section of flowmeter is identical with the principle of First flowmeter, second flowmeter, the measurement upper limit of last flowmeter and the upper limit of process pipeline flow measurement range corresponding consistent (each section of flow measurement weight range segmentation is connected).
The measuring method of the utility model flow measurement device, comprises the following steps:
1) according to the lower limit of medium state of arts and process pipeline flow measurement range, select the First flowmeter of an adequate types, and selected its bore and the measurement upper limit; Select second flowmeter, the measurement lower limit of described second flowmeter is a little less than the measurement upper limit of First flowmeter again, and the measurement upper limit of second flowmeter is corresponding consistent with the upper limit of process pipeline flow measurement range, and the bore of selected second flowmeter;
2) First flowmeter, second flowmeter are installed in parallel, the upstream and downstream of First flowmeter, second flowmeter, by selected flowmeter survey requirement, arrange straight length; And install with it with the first stop valve of bore, install and its second stop valve with bore at the front end of second flowmeter at the front end of First flowmeter;
3) automatically detect by PLC controller the uninterrupted of process pipeline of flowing through, and the first stop valve, the second stop valve carried out to chain control:
When the flow that records the process pipeline of flowing through higher than First flowmeter survey in limited time, the first stop valve becomes closed condition, the second stop valve from the normally closed opening that becomes from often opening; The chain control of two stop valves, makes in the time of low section of flow, adopts First flowmeter survey; In the time of high section flow, adopt second flowmeter survey; First flowmeter, second flowmeter are worked respectively in its effective range.
The beneficial effect that the utility model compared with prior art has: effectively improved the range ratio of flow measurement device, accuracy of measurement is high is applicable to carrying out the energy medium metering of wide-measuring range very much; Simple and convenient, practical reliable, that feasibility is controlled in operation is high.
Brief description of the drawings
Fig. 1 is the structural representation of flow measurement device in the utility model embodiment;
In figure, 1-First flowmeter, second flowmeter of 2-, 3-the first stop valve, 4-the second stop valve, 5-process pipeline.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated.
Shown in Fig. 1, the flow measurement device that is installed in parallel areal survey wide range ratio described in the utility model, comprise process pipeline 5 and First flowmeter thereon 1, second flowmeter 2 are set, described First flowmeter 1, second flowmeter 2 are installed in parallel, and the front end of First flowmeter 1 is installed on its front end with 3, the second flowmeters 2 of the first stop valve of bore and is installed on and its second stop valve 4 with bore; Described the first stop valve 3 is that open type, the second stop valve 4 are closed type; The measurement lower limit of described second flowmeter 2 is a little less than the measurement upper limit of First flowmeter 1.
The measurement range of described First flowmeter 1 is determined according to the lower limit of process pipeline flow measurement range, the lower limit of process pipeline flow measurement range is positioned at the measurement range of First flowmeter 1, and the measurement upper limit of described second flowmeter 2 is corresponding consistent with the upper limit of process pipeline flow measurement range.
The unlocking condition of described the first stop valve 3 is: the flow of the process pipeline 5 of flowing through is lower than the measurement lower limit of second flowmeter 2, and the condition of closing of the first stop valve 3 is: the flow of the process pipeline 5 of flowing through is measured the upper limit higher than First flowmeter 1; The unlocking condition of described the second stop valve 4 is: the flow of the process pipeline 5 of flowing through is measured the upper limit higher than First flowmeter 1, the condition of closing of the second stop valve 4 is: the flow of the process pipeline 5 of flowing through is lower than second flowmeter 2 measurement lower limit (measure upper prescribing a time limit when the flow that records the process pipeline 5 of flowing through higher than First flowmeter 1, the first stop valve 3 becomes closed condition, the second stop valve 4 from the normally closed opening that becomes from often opening).
Described First flowmeter 1, second flowmeter 2 are vortex shedding flow meter.
The upstream and downstream of described First flowmeter 1, second flowmeter 2 arrange respectively upstream straight length, downstream straight length.
Described the first stop valve 3, the second stop valve 4 all adopt cage guidance type single seat pneumatic cut-off valve (having the valve switch switching time of fast katal, minimizing the first stop valve 3, the second stop valve 4).
Described second flowmeter 2 also can replace with that multistage is installed in parallel, the flowmeter of different flow measurement range (as the 3rd flowmeter, the 4th flowmeter etc.), the principle of the measurement bound design of each section of flowmeter and First flowmeter 1, second flowmeter 2 is identical, the measurement upper limit of last flowmeter and the upper limit of process pipeline flow measurement range corresponding consistent (each section of flow measurement weight range segmentation linking).
Need carry out nitrogen header pipe flow metering, measurement range 200 ~ 12000 m for concrete certain engineering
3/ h, technique caliber DN250.But current conventional flowmeter all cannot measure it, and the method that adopts flow measurement device of the present utility model to measure, comprises the steps:
1) according to lower limit 200 m of medium state of arts and process pipeline flow measurement range
3/ h, selects First flowmeter 1(vortex shedding flow meter), and selected its bore DN100 and the measurement upper limit 1500 m
3/ h; Select again second flowmeter 2(vortex shedding flow meter): according to the measurement upper limit of selected First flowmeter 1, in this upper range, select measured value 1300 m
3/ h, as the measurement lower limit of second flowmeter 2, and by the upper limit of process pipeline flow measurement range 12000 m
3/ h is as the measurement upper limit of second flowmeter 2, and the bore DN300 of selected second flowmeter 2;
2) First flowmeter 1, second flowmeter 2 are installed in parallel, requirement is measured and arranges the straight length of certain length in the upstream and downstream of First flowmeter 1, second flowmeter 2 by vortex shedding flow meter: upstream straight length caliber DN15, downstream straight length caliber DN5; And install with it with the first stop valve 3 of bore, install and its second stop valve 4 with bore at the front end of second flowmeter 2 at the front end of First flowmeter 1, described the first stop valve 3, the second stop valve 4 all adopt cage guidance type single seat pneumatic cut-off valve, there is fast katal, reduce the valve switch switching time of the first stop valve 3, the second stop valve 4;
3) automatically detect by PLC controller the uninterrupted of process pipeline of flowing through, and the first stop valve 3, the second stop valve 4 carried out to chain control:
First stop valve 3 is pneumatic open type, bore DN100, its unlocking condition: the flow of the process pipeline 5 of flowing through is lower than second flowmeter, 2 measurement lower limit 1400 m
3/ h; Close condition: the flow of the process pipeline 5 of flowing through is measured the upper limit 1400 m higher than First flowmeter 1
3/ h;
Second stop valve 4 is pneumatic closed type, bore DN300, its unlocking condition: the flow of the process pipeline 5 of flowing through is measured the upper limit 1400 m higher than First flowmeter 1
3/ h; Close condition: the flow of the process pipeline 5 of flowing through is lower than second flowmeter, 2 measurement lower limit 1400 m
3/ h;
Measure upper prescribing a time limit when the flow that records the process pipeline 5 of flowing through higher than First flowmeter 1, the first stop valve 3 becomes closed condition, the second stop valve 4 from the normally closed opening that becomes from often opening; The chain control of two stop valves, makes in the time of low section of flow, adopts First flowmeter 1 to measure, bore DN100, measurement range 200 ~ 1500 m
3/ h; In the time of high section flow, adopt second flowmeter 2 to measure, bore DN300, measurement range 1300 ~ 12000 m
3/ h; First flowmeter 1, second flowmeter 2 are worked respectively in its effective range.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. one kind is installed in parallel the flow measurement device of areal survey wide range ratio, it is characterized in that: comprise process pipeline and First flowmeter, second flowmeter is thereon set, described First flowmeter, second flowmeter are installed in parallel, and the front end of First flowmeter is installed on and its first stop valve with bore, the front end of second flowmeter is installed on and its second stop valve with bore; Described the first stop valve is that open type, the second stop valve are closed type; The measurement lower limit of described second flowmeter is a little less than the measurement upper limit of First flowmeter; Described the first stop valve, the second stop valve all adopt cage guidance type single seat pneumatic cut-off valve.
2. the flow measurement device that is installed in parallel areal survey wide range ratio as claimed in claim 1, it is characterized in that: the measurement range of described First flowmeter is determined according to the lower limit of process pipeline flow measurement range, the lower limit of process pipeline flow measurement range is positioned at the measurement range of First flowmeter, and the measurement upper limit of described second flowmeter is corresponding consistent with the upper limit of process pipeline flow measurement range.
3. the flow measurement device that is installed in parallel areal survey wide range ratio as claimed in claim 1 or 2, is characterized in that: described First flowmeter, second flowmeter are vortex shedding flow meter.
4. the flow measurement device that is installed in parallel areal survey wide range ratio as claimed in claim 1, is characterized in that: the bore of described First flowmeter is to be limited to 1500m in DN100, measurement
3/ h; The bore of described second flowmeter is that DN300, measurement lower limit are 1300m
3in/h, measurement, be limited to 12000m
3/ h.
5. the flow measurement device that is installed in parallel areal survey wide range ratio as claimed in claim 3, it is characterized in that: the upstream and downstream of described First flowmeter, second flowmeter arrange respectively upstream straight length, downstream straight length, and upstream straight length caliber DN15, downstream straight length caliber DN5.
6. the flow measurement device that is installed in parallel areal survey wide range ratio as claimed in claim 1, it is characterized in that: described second flowmeter replaces with that multistage is installed in parallel, the flowmeter of different flow measurement range, the measurement bound design of each section of flowmeter is identical with the principle of First flowmeter, second flowmeter, and the measurement upper limit of last flowmeter is corresponding consistent with the upper limit of process pipeline flow measurement range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144534.7U CN204027618U (en) | 2014-03-28 | 2014-03-28 | A kind of flow measurement device that is installed in parallel areal survey wide range ratio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144534.7U CN204027618U (en) | 2014-03-28 | 2014-03-28 | A kind of flow measurement device that is installed in parallel areal survey wide range ratio |
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|---|---|
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| CN201420144534.7U Expired - Fee Related CN204027618U (en) | 2014-03-28 | 2014-03-28 | A kind of flow measurement device that is installed in parallel areal survey wide range ratio |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868559A (en) * | 2014-03-28 | 2014-06-18 | 中冶南方工程技术有限公司 | Parallel installation and segmental measurement flow measurement method with large measurement range ratio and device thereof |
| CN106932041A (en) * | 2015-12-30 | 2017-07-07 | 核工业北京地质研究院 | A kind of water pressure test in borehole multistage flow high precision measuring device and method |
| US10863667B2 (en) | 2015-09-28 | 2020-12-15 | Precision Planting Llc | Systems and devices for controlling and monitoring liquid applications of agricultural fields |
-
2014
- 2014-03-28 CN CN201420144534.7U patent/CN204027618U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868559A (en) * | 2014-03-28 | 2014-06-18 | 中冶南方工程技术有限公司 | Parallel installation and segmental measurement flow measurement method with large measurement range ratio and device thereof |
| US10863667B2 (en) | 2015-09-28 | 2020-12-15 | Precision Planting Llc | Systems and devices for controlling and monitoring liquid applications of agricultural fields |
| US11337366B2 (en) | 2015-09-28 | 2022-05-24 | Precision Planting Llc | Systems and devices for controlling and monitoring liquid applications of agricultural fields |
| US11350562B2 (en) | 2015-09-28 | 2022-06-07 | Precision Planting Llc | Systems and devices for controlling and monitoring liquid applications of agricultural fields |
| CN106932041A (en) * | 2015-12-30 | 2017-07-07 | 核工业北京地质研究院 | A kind of water pressure test in borehole multistage flow high precision measuring device and method |
| CN106932041B (en) * | 2015-12-30 | 2019-07-12 | 核工业北京地质研究院 | A kind of water pressure test in borehole multistage flow high precision measuring device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |