CN112665664A - Gas flow detection system - Google Patents
Gas flow detection system Download PDFInfo
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- CN112665664A CN112665664A CN202011629854.8A CN202011629854A CN112665664A CN 112665664 A CN112665664 A CN 112665664A CN 202011629854 A CN202011629854 A CN 202011629854A CN 112665664 A CN112665664 A CN 112665664A
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Abstract
The invention relates to a gas flow detection system, which is connected with a gas outlet of a compressor to be detected, and comprises a gas storage tank and a plurality of detection units which are arranged in parallel, wherein each detection unit comprises a gate valve, a flow cylinder and a pressure regulation unit which are sequentially connected, a plurality of rectification pore plates are arranged at the inlet end of the flow cylinder, a detection pore plate is arranged in the middle of the flow cylinder, a differential pressure sensor, a pressure gauge and a pressure sensor are arranged in front of and behind the detection pore plate, and a temperature sensor is arranged at the rear end of the flow cylinder. According to the invention, a plurality of sets of flow cylinders are arranged for combined use according to actual requirements, and each flow cylinder can work independently and share one set of pressure difference detection assembly and pressure stabilization assembly; the compressed gas passing through the flow measuring cylinder is finally discharged through a silencer; each detection instrument has a remote transmission function and can be transmitted to a PLC or a computer system.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a gas flow detection system.
Background
The compressor is a device for compressing low-pressure gas into high-pressure gas, and plays an important role in the industries of chemical industry, medicine, metallurgy and the like. The indexes for evaluating the performance of the compressor are many, one of the indexes is the flow rate, the flow rate can reflect the treatment capacity of the compressor, and the index is a test which is necessary to be carried out before each compressor leaves a factory. Each compressor manufacturer will have a dedicated detection system, but such systems suffer from the following drawbacks: (1) each set of detection system only aims at a certain type of compressor, and when compressors of different types are produced, a plurality of sets of detection systems need to be equipped, so that the cost is high; (2) in the measuring process, the pressure is ensured to be kept stable, but the pressure is actually influenced by factors such as external environment and the like, and the detected pressure has small fluctuation, so that the measuring error is larger.
Therefore, there is a need in the art for a gas flow rate detection system with a wide application range and reliable detection results.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a gas flow detection system with wide application range and reliable detection result.
In order to achieve the object of the present invention, the present application provides the following technical solutions.
In a first aspect, the application provides a gas flow detecting system, detecting system is connected with the gas outlet of the compressor that awaits measuring, detecting system includes a plurality of detecting element of gas holder and parallelly connected setting, and every detecting element is including the gate valve, flow cylinder and the pressure regulation unit that connect gradually, wherein the entrance point of flow cylinder sets up polylith rectification orifice plate, the middle part of flow cylinder sets up the detection orifice plate, sets up differential pressure sensor, manometer and pressure sensor around detecting the orifice plate. The specifications of the flow cylinders in each detection unit are different, so that different flow cylinders (namely detection units) are selected to meet the measurement requirements of different flows. In addition, the air storage tank is arranged in front of the detection unit and can be used as a buffer tank, so that the influence of pulse air outlet of the compressor to be detected is reduced; the pressure stabilization can also be regulated by means of a pressure regulating unit.
In one embodiment of the first aspect, the number of the rectification orifice plates is 2. The rectifying orifice plate is arranged for rectifying gas entering the flow cylinder, and the influence of fluid fluctuation on flow is avoided.
In an implementation manner of the first aspect, pipelines are led out from both the front end and the rear end of the detection orifice plate, ball valves are arranged on both the pipelines, the two pipelines are respectively connected with both ends of the differential pressure sensor, and the pressure sensor and the pressure gauge are arranged in the pipeline led out from the front end of the detection orifice plate. In this application, many sets of detecting element share a differential pressure sensor, a pressure sensor and a manometer, switch through the break-make of the ball valve that every detecting element corresponds.
In an implementation manner of the first aspect, the detection unit includes a data processing unit, and the data processing unit is connected to the differential pressure sensor and the pressure sensor, and is configured to read the pressure at the front end of the detection orifice plate, detect a differential pressure across the detection orifice plate, and calculate a gas flow passing through the detection orifice plate.
In one embodiment of the first aspect, the data processing unit comprises a controller therein, the controller being connected to the pressure regulating unit and being configured to control the operation of the pressure regulating unit.
In an embodiment of the first aspect, the pressure adjusting unit includes a coarse adjusting pipeline and a fine adjusting pipeline connected in parallel, wherein a manual flow regulating valve is disposed in the coarse adjusting pipeline, a gate valve and an electric flow regulating valve are disposed in the fine adjusting pipeline, the electric flow regulating valve is connected to the controller, and the opening of the electric flow regulating valve is controlled by the controller, so that the pressure in the flow cylinder is kept stable by the change of the opening of the electric flow regulating valve.
In an embodiment of the first aspect, the controller is a PLC controller or a single chip microcomputer.
In one embodiment of the first aspect, the number of the detection units is 2 to 5, preferably 3.
In one embodiment of the first aspect, a rear end of the detection unit is provided with a silencer.
Compared with the prior art, the invention has the beneficial effects that:
(1) the combination of the flow cylinders with different specifications can meet the measurement requirements of different flows;
(2) different flow cylinders share one set of pressure and pressure difference measuring device, so that the structure is simplified, and the cost is saved;
(3) a pressure stabilizing device is arranged, and the detected pressure can be automatically adjusted and finely adjusted to be stabilized at a set value;
(4) the silencer is arranged at the outlet, so that the noise of the detection system can be reduced;
(5) the detecting instruments have the remote transmission function, can be transmitted to the controller and controlled, and can display each measured data and the final flow result thereof through programs.
Drawings
Fig. 1 is a schematic structural diagram of the present application.
In the drawing, 1 is a gas storage tank, 2 is a first detection unit, 3 is a second detection unit, 4 is a third detection unit, 5 is a gate valve, 6 is a flow rate cylinder, 7 is a rectification orifice plate, 8 is a detection orifice plate, 9 is a ball valve, 10 is a differential pressure sensor, 11 is a pressure sensor, 12 is a pressure gauge, 13 is a temperature sensor, 14 is a manual flow rate adjustment valve, 15 is a gate valve, 16 is an electric flow rate adjustment valve, 17 is a ball valve, 18 is a silencer, and 19 is a data processing unit.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein in the specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. Modifications and substitutions to the embodiments of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, and the resulting embodiments are within the scope of the present invention.
Examples
The following will describe in detail the embodiments of the present invention, which are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and the specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
A flow detection system is structurally shown in figure 1, a gas pipeline inlet of the detection system is connected with a compressor to be detected (the compressor to be detected is not shown in the figure), then a gas storage tank 1 is arranged, the gas storage tank 1 is respectively connected with a first detection unit 2, a second detection unit 3 and a third detection unit 4 through three pipelines, the types of parts arranged on the three detection units are the same, but the specifications of the used parts are different, and the first detection unit 2 is taken as an example:
the entrance of first detecting element 2 is provided with gate valve 5, then connects flow cylinder 6, sets up 2 rectification orifice plates 7 at the front end of flow cylinder 6, and after the rectification of rectification orifice plate 7, through setting up the detection orifice plate 8 in the middle part of flow cylinder 6 again, then flow cylinder 6, set up temperature sensor 13 at the rear end of flow cylinder 6. The differential pressure sensor 10, the pressure sensor 11 and the pressure gauge 12 are respectively connected to the front and the back of the detection pore plate 8 of each flow cylinder 6 through the meter pipelines through the ball valves 9, when in use, one group of ball valves 9 corresponding to the used flow cylinders 6 is opened, and the other two groups are closed. And a pressure adjusting unit is arranged at the outlet of the flow cylinder 6 and comprises a coarse adjusting pipeline and a fine adjusting pipeline which are connected in parallel, wherein a manual flow regulating valve 14 is arranged in the coarse adjusting pipeline, one manual flow regulating valve 14 is arranged for each detection unit, a gate valve 15, an electric flow regulating valve 16 and a ball valve 17 are sequentially arranged in the fine adjusting pipeline, one gate valve 15 is arranged for each detection unit, and the electric flow regulating valve 16 and the ball valve 17 are shared by three detection units. When the flow rate measuring device is used, the manual flow rate regulating valve 14 and the gate valve 15 corresponding to the used flow rate cylinder 6 are opened, the other two detection units are closed, and then the common electric flow rate regulating valve 16 and the common ball valve 17 are opened. A silencer 18 is provided at the outlet of the detection unit for reducing airflow noise.
In this embodiment, the detection system further comprises a data processing unit 19, and the data processing unit 19 is connected to the differential pressure sensor 10, the pressure sensor 11 and the temperature sensor 13, and is configured to process data measured by the sensors and calculate the gas flow rate in the flow cylinder 6. The data processing unit 19 includes a PLC controller that controls the opening of the electric flow rate control valve 16 based on the data from the pressure sensor 11, thereby stabilizing the air pressure in the flow cylinder 6.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (9)
1. The utility model provides a gas flow detecting system, detecting system is connected with the gas outlet of the compressor that awaits measuring, a serial communication port, detecting system includes a plurality of detecting element of gas holder and parallelly connected setting, and every detecting element is including the gate valve, flow cylinder and the pressure regulation unit that connect gradually, wherein the entrance point of flow cylinder sets up polylith rectification orifice plate, the middle part of flow cylinder sets up the detection orifice plate, sets up differential pressure sensor, manometer and pressure sensor around detecting the orifice plate, sets up temperature sensor at the rear end of flow cylinder.
2. The gas flow sensing system of claim 1, wherein the number of rectification orifice plates is 2.
3. The gas flow rate detecting system according to claim 1, wherein a pipeline is led out from both the front end and the rear end of the detecting orifice plate, a ball valve is disposed on both the pipelines, the two pipelines are respectively connected to both ends of the differential pressure sensor, and the pressure sensor and the pressure gauge are disposed in the pipeline led out from the front end of the detecting orifice plate.
4. The gas flow sensing system of claim 3, wherein the sensing unit comprises a data processing unit, and the data processing unit is connected to the differential pressure sensor, the pressure sensor, and the temperature sensor, and is configured to read the pressure at the front end of the sensing orifice plate, sense the differential pressure across the sensing orifice plate, and calculate the gas flow through the sensing orifice plate.
5. The gas flow sensing system of claim 4, wherein the data processing unit includes a controller therein, the controller being coupled to the pressure regulating unit and configured to control operation of the pressure regulating unit.
6. The gas flow rate detecting system according to claim 5, wherein the pressure regulating unit comprises a coarse regulating pipeline and a fine regulating pipeline connected in parallel, wherein a manual flow rate regulating valve is disposed in the coarse regulating pipeline, a gate valve and an electric flow rate regulating valve are disposed in the fine regulating pipeline, and the electric flow rate regulating valve is connected to the controller and the opening degree thereof is controlled by the controller.
7. The gas flow sensing system of claim 5 or 6, wherein the controller is a PLC controller or a single chip microcomputer.
8. The gas flow rate detecting system according to any one of claims 1 to 6, wherein the number of the detecting units is 2 to 5.
9. The gas flow rate detecting system according to claim 1, wherein a silencer is provided at a rear end of the detecting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629854.8A CN112665664A (en) | 2020-12-31 | 2020-12-31 | Gas flow detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629854.8A CN112665664A (en) | 2020-12-31 | 2020-12-31 | Gas flow detection system |
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| Publication Number | Publication Date |
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| CN112665664A true CN112665664A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011629854.8A Pending CN112665664A (en) | 2020-12-31 | 2020-12-31 | Gas flow detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698162A (en) * | 2023-06-27 | 2023-09-05 | 青岛乾程科技股份有限公司 | Gas flow error checking system, testing method thereof and gas meter error checking method |
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2020
- 2020-12-31 CN CN202011629854.8A patent/CN112665664A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698162A (en) * | 2023-06-27 | 2023-09-05 | 青岛乾程科技股份有限公司 | Gas flow error checking system, testing method thereof and gas meter error checking method |
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