CN205593695U - Differential pressure precision measurement and controlling means - Google Patents
Differential pressure precision measurement and controlling means Download PDFInfo
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- CN205593695U CN205593695U CN201620209593.7U CN201620209593U CN205593695U CN 205593695 U CN205593695 U CN 205593695U CN 201620209593 U CN201620209593 U CN 201620209593U CN 205593695 U CN205593695 U CN 205593695U
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Abstract
The utility model discloses a differential pressure precision measurement and controlling means, its constitution includes: the air inlet pipeline, air inlet pipeline one end is connected with the pipeline no. 1 of giving vent to anger, the pipeline no. 2 of giving vent to anger, give vent to anger pipeline no. 3 with survey the buret way, the pipeline no. 1 of giving vent to anger, the pipeline no. 2 of giving vent to anger, it has pressure regulating valve no. 1 on the pipeline no. 3 to give vent to anger, pressure regulating valve two, pressure regulating valve three, the three routes branch that surveys the buret way is through measuring ooff valve no. 1, measure ooff valve no. 2, measure the ooff valve no. 3 and the pipeline no. 1 of giving vent to anger, the pipeline no. 2 of giving vent to anger, three connections of pipeline of giving vent to anger, pressure regulating valve one, pressure regulating valve two, pressure regulating valve no. 3 and measurement ooff valve no. 1, measure ooff valve no. 2, it is connected with the control unit to measure ooff valve no. 3, pressure transmitter has in the tube bank between air inlet pipeline and the the control unit, differential pressure transmitter has between air inlet pipeline and the survey buret way, differential pressure transmitter and the control unit are connected. Equipment cost is saved to this measurement and controlling means method stable in structure, novelty, and easy operation, has improved measurement accuracy.
Description
Technical field
This utility model relates to chemical computation and controls technical field, is specially a kind of differential pressure and accurately measures and control device.
Background technology
During chemical computation and control, often need accurately measure the force value of upstream and downstream and calculate the difference at two, traditional way is to be respectively provided with a pressure transmitter at upstream and downstream to measure respectively, then calculates the difference at two by host computer, then controls valve and regulates.Owing to pressure transmitter itself has certain measurement error, error is instrument range * instrument measurement precision.Host computer obtains pressure value by signal transmission, then carries out differential pressure calculating, and host computer limits due to computational accuracy own, more increases the error of difference.The most whole difference error=pressure transmitter 1 instrument range * pressure transmitter 1 certainty of measurement+pressure transmitter 2 instrument range * pressure transmitter 2 certainties of measurement+host computer calculates error.
Utility model content
The purpose of this utility model is to provide a kind of differential pressure accurately measure and control device, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme: a kind of differential pressure is accurately measured and controls device, its composition includes: air inlet pipeline, described air inlet pipeline one end connects outlet pipe one, outlet pipe two, outlet pipe three and measurement pipeline, described outlet pipe one, outlet pipe two, there is on outlet pipe three pressure-regulating valve one, pressure-regulating valve two, pressure-regulating valve three, the described three tunnel branches measuring pipeline are by measuring switch valve one, measure switch valve two, measure switch valve three and outlet pipe one, outlet pipe two, outlet pipe three connects.
Described pressure-regulating valve one, pressure-regulating valve two, pressure-regulating valve three and measure switch valve one, measure switch valve two, measure switch valve three and be connected with control unit.
Having pressure transmitter in tube bank between described air inlet pipeline and control unit, have differential pressure transmitter between described air inlet pipeline and measurement pipeline, described differential pressure transmitter is connected with control unit.
Described device also includes that information receives sending module, information receives sending module and is connected with control unit, receiving, with information, the information transmission and reception apparatus being connected with information processing system that sending module is correspondingly arranged, information processing system includes data processing module, data disaply moudle, emergent alarm module, data memory module.
Compared with prior art, the beneficial effects of the utility model are: this differential pressure is accurately measured and controlled device and measures by the way of using pressure transmitter and differential pressure transmitter combination, need not host computer and again calculate the pressure difference value at two, whole difference error=differential pressure transmitter instrument range × instrument measurement precision, the most in general differential pressure transmitter range wants specific pressure transmitter range much smaller, is thus greatly improved the precision of measurement.The pressure data that somewhere gathers is uploaded information processing system, feasible system, automated management by communication network, decreases manpower and materials and put into.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1, air inlet pipeline；2, pressure transmitter；3, differential pressure transmitter；4, control unit；5, pipeline is measured；6, switch valve one is measured；7, switch valve two is measured；8, switch valve three is measured；9, pressure-regulating valve one；10, pressure-regulating valve two；11, pressure-regulating valve three；12, outlet pipe one；13, outlet pipe two；14, outlet pipe three.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，This utility model provides a kind of technical scheme: a kind of differential pressure is accurately measured and controls device，Its composition includes: air inlet pipeline 1，Air inlet pipeline 1 one end connects outlet pipe 1、Outlet pipe 2 13、Outlet pipe 3 14 and measurement pipeline 5，Outlet pipe 1、Outlet pipe 2 13、There is on outlet pipe 3 14 pressure-regulating valve 1、Pressure-regulating valve 2 10、Pressure-regulating valve 3 11，Measure three tunnel branches of pipeline 5 by measuring switch valve 1、Measure switch valve 27、Measure switch valve 38 and outlet pipe 1、Outlet pipe 2 13、Outlet pipe 3 14 connects，Pressure-regulating valve 1、Pressure-regulating valve 2 10、Pressure-regulating valve 3 11 and measurement switch valve 1、Measure switch valve 27、Measure switch valve 38 to be connected with control unit 4，There is in tube bank between air inlet pipeline 1 and control unit 4 pressure transmitter 2，Between air inlet pipeline 1 and measurement pipeline 5, there is differential pressure transmitter 3，Differential pressure transmitter 3 is connected with control unit 4.
Operation principle: when outlet pipe 1 is adjusted by needs, open measurement switch valve 1, close and measure switch valve 27 and measure switch valve 38, what differential pressure transmitter 3 was measured is the differential pressure between air inlet pipeline 1 and outlet pipe 1, differential pressure signal reaches required pressure through operation control pressure-regulating valve 1 to the pressure adjusting air pipe 1 after being sent to control unit 4, and outlet pipe force value is worth sum equal to pressure transmitter 2 value and differential pressure transmitter 3.
When outlet pipe 2 13 is adjusted by needs, open measurement switch valve 27, close and measure switch valve 1 and measure switch valve 38, what differential pressure transmitter 3 was measured is the differential pressure between air inlet pipeline 1 and outlet pipe 2 13, differential pressure signal reaches required pressure through operation control pressure-regulating valve 2 10 to the pressure adjusting air pipe 2 13 after being sent to control unit 4, and outlet pipe force value is worth sum equal to pressure transmitter 2 value and differential pressure transmitter 3.
When outlet pipe 3 14 is adjusted by needs, open measurement switch valve 38, close and measure switch valve 1 and measure switch valve 27, what differential pressure transmitter 3 was measured is the differential pressure between air inlet pipeline 1 and outlet pipe 3 14, differential pressure signal reaches required pressure through operation control pressure-regulating valve 3 11 to the pressure adjusting air pipe 3 14 after being sent to control unit 4, and outlet pipe force value is equal to pressure transmitter value 2 and differential pressure transmitter value 3 sum.
A kind of differential pressure is accurately measured and is controlled device and also includes that information receives sending module, information receives sending module and is connected with control unit, receiving, with information, the information transmission and reception apparatus being connected with information processing system that sending module is correspondingly arranged, information processing system includes data processing module, data disaply moudle, emergent alarm module, data memory module.
Embodiment the most of the present utility model, for the ordinary skill in the art, being appreciated that in the case of without departing from principle of the present utility model and spirit and these embodiments can carry out multiple change, revise, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a differential pressure is accurately measured and controls device, its composition includes: air inlet pipeline (1), it is characterized in that: described air inlet pipeline (1) one end connects outlet pipe one (12), outlet pipe two (13), outlet pipe three (14) and measurement pipeline (5), described outlet pipe one (12), outlet pipe two (13), there is on outlet pipe three (14) pressure-regulating valve one (9), pressure-regulating valve two (10), pressure-regulating valve three (11), three tunnel branches of described measurement pipeline (5) are by measuring switch valve one (6), measure switch valve two (7), measure switch valve three (8) and outlet pipe one (12), outlet pipe two (13), outlet pipe three (14) connects.
A kind of differential pressure the most according to claim 1 is accurately measured and controls device, it is characterized in that: described pressure-regulating valve one (9), pressure-regulating valve two (10), pressure-regulating valve three (11) and measure switch valve one (6), measure switch valve two (7), measurement switch valve three (8) is connected with control unit (4).
A kind of differential pressure the most according to claim 1 and 2 is accurately measured and controls device, it is characterized in that: in the tube bank between described air inlet pipeline (1) and control unit (4), there is pressure transmitter (2), having differential pressure transmitter (3) between described air inlet pipeline (1) and measurement pipeline (5), described differential pressure transmitter (3) is connected with control unit (4).
A kind of differential pressure the most according to claim 3 is accurately measured and controls device, it is characterized in that: also include that information receives sending module, information receives sending module and is connected with control unit, receiving, with information, the information transmission and reception apparatus being connected with information processing system that sending module is correspondingly arranged, information processing system includes data processing module, data disaply moudle, emergent alarm module, data memory module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620209593.7U CN205593695U (en) | 2016-03-18 | 2016-03-18 | Differential pressure precision measurement and controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620209593.7U CN205593695U (en) | 2016-03-18 | 2016-03-18 | Differential pressure precision measurement and controlling means |
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| CN205593695U true CN205593695U (en) | 2016-09-21 |
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| CN201620209593.7U Active CN205593695U (en) | 2016-03-18 | 2016-03-18 | Differential pressure precision measurement and controlling means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441087A (en) * | 2022-01-21 | 2022-05-06 | 重庆远通电子技术开发有限公司 | Pipe network pressure detection device and method based on preset pressure |
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2016
- 2016-03-18 CN CN201620209593.7U patent/CN205593695U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441087A (en) * | 2022-01-21 | 2022-05-06 | 重庆远通电子技术开发有限公司 | Pipe network pressure detection device and method based on preset pressure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |