CN111437742A - Automatic adjusting method for closed-loop gas proportioning cabinet - Google Patents
Automatic adjusting method for closed-loop gas proportioning cabinet Download PDFInfo
- Publication number
- CN111437742A CN111437742A CN202010324274.1A CN202010324274A CN111437742A CN 111437742 A CN111437742 A CN 111437742A CN 202010324274 A CN202010324274 A CN 202010324274A CN 111437742 A CN111437742 A CN 111437742A
- Authority
- CN
- China
- Prior art keywords
- gas
- valve
- pressure sensor
- controller
- content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/883—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to an automatic adjusting method of a closed-loop gas proportioning bin, wherein a first inlet is connected to a balance valve through a first filter, and a second inlet is connected to the balance valve through a second filter; one path of the balance valve is sequentially connected with a first pressure sensor, a first flowmeter, a first flow regulating valve and a mixing valve, the other path of the balance valve is sequentially connected with a second pressure sensor, a second flowmeter, a second flow regulating valve and a mixing valve, an outlet of the mixing valve is sequentially connected with an electromagnetic switch valve, a third pressure sensor and a gas outlet, and a gas content analyzer is arranged between the third pressure sensor and the gas outlet; the first pressure sensor, the second pressure sensor and the third pressure sensor are respectively connected with the controller, and the controller is respectively connected with the touch screen, the gas content analyzer, the first flowmeter and the second flowmeter. The invention can be adjusted according to the inlet and outlet pressure, has wide application range, is suitable for various complex working conditions, and has good adjusting real-time property and accuracy.
Description
Technical Field
The invention relates to the technical field of welding mixed gas equipment, in particular to an automatic adjusting method of a closed-loop gas proportioning bin, which can adjust according to inlet and outlet pressures, has wide application range, is suitable for various complex working conditions, and has good adjusting real-time property and accuracy.
Background
The gas proportioning tank is also called a gas proportioner, a gas mixing tank and a mixed gas proportioning tank, is a large-flow binary gas mixing device specially designed for gas shielded welding, is mainly used for matching and using a centralized gas supply bus bar, can proportion two gases which need to be used according to using requirements, and obtains uniform mixed gas. The series of gas proportioning tanks have the characteristics of mixing precision reaching +/-1.5%, stable output and the like. The gas shielded welding device can be widely applied to various gas shielded welding occasions such as railways, ships, chemical engineering, mechanical manufacturing and the like.
The flowmeter is known by its english name flowmeter, which is defined by the national committee for the examination and determination of scientific and technical terms as: meters that indicate the measured flow rate and/or the total amount of fluid in a selected time interval. Simply a meter for measuring the flow of fluid in a pipe or open channel. The flow meters are classified into differential pressure type flow meters, rotor flow meters, throttle type flow meters, slit flow meters, volumetric flow meters, electromagnetic flow meters, ultrasonic flow meters, and the like. Classifying according to media: liquid flow meters and gas flow meters. Metering is on the eye of industrial production. The flow measurement is one of the components of the measurement science and technology, and has close relation with national economy, national defense construction and scientific research. The work is well done, the flowmeter has important effects on ensuring the product quality, improving the production efficiency and promoting the development of scientific technology, and particularly has more obvious status and effect in national economy in the current times that the energy crisis and the industrial production automation degree are higher and higher. The unit m3/h is commonly used in engineering and can be divided into instantaneous Flow (Flow Rate), namely the amount passing through the effective section of a closed pipeline or an open channel in unit time, and Total Flow (Total Flow), wherein the flowing substances can be gas, liquid and solid; the cumulative flow rate is the cumulative amount of fluid flowing through the effective cross section of the closed conduit or channel over a certain time interval (one day, one week, one month, one year). The accumulated flow rate can also be obtained by integrating the instantaneous flow rate with time, so that the instantaneous flow rate meter and the accumulated flow rate meter can be mutually converted.
Application number 201310212481.8, grant notice No. CN103349926B, disclose full-automatic proportioning bin, this full-automatic proportioning bin, including the gas mixing valve, its special character lies in: the gas mixing valve is connected with an automatic proportioning valve, the automatic proportioning valve is connected with a multi-stage balancing device for balancing the pressure of input gas, the multi-stage balancing device is connected with a gas inlet pipe of the input gas, and the gas mixing valve is connected with a gas outlet joint.
The automatic proportioning valve comprises a proportioning valve main body A and a proportioning valve main body B, the proportioning valve main body A is arranged in front of the proportioning valve main body B, one end of a movable valve core is fixed on the linkage connector, the other end of the movable valve core penetrates through the proportioning valve main body A and is arranged inside the proportioning valve main body B, a corner of an inner space of the proportioning valve main body A is a right angle, the front part of the movable valve core is narrow and wide at the rear part, cone angles are arranged at a position close to the front end and at the tail end of the front part of the movable valve core, the proportioning valve main body A is connected with an A gas outlet of the two-stage balancing device through a gas A conveying pipeline, the proportioning valve main body B is connected with a B gas outlet of the two-stage balancing device through a gas B conveying pipeline, the proportioning valve main body A is connected with the gas mixing valve main body A through a gas mixing flow dividing pipe, and the mixing valve main body A is connected with the mixing valve main body through a mixing flow dividing pipe, and the mixing valve is connected with the mixing valve main body through a mixing flow dividing pipe and a mixing flow pipe, and a mixing flow-distributing pipe, and a mixing valve is connected with the mixing valve main body, and the mixing flow-gas conveying connector.
In the prior art, the automatic adjustment of the proportioning bin realizes the automatic control function by controlling the automatic adjustment of the automatic proportioning valve, and the method has the advantages of lag in adjustment due to the pressure change of two paths of gas at the inlet and the reaction of the pressure at the outlet, narrow application range, poor adjustment instantaneity and inapplicability to various working conditions. The automatic adjusting method of the closed-loop gas proportioning bin is required to be capable of adjusting according to the inlet and outlet pressure, wide in application range, suitable for various complex working conditions, good in adjusting real-time performance and good in accuracy.
Disclosure of Invention
The invention aims to provide the automatic adjusting method of the closed-loop gas proportioning bin, which can adjust according to the pressure of an inlet and an outlet, has wide application range, is suitable for various complex working conditions, and has good adjusting instantaneity and accuracy.
An automatic adjusting method of a closed-loop gas proportioning bin comprises the following steps:
a first inlet connected to the balancing valve through a first filter, a second inlet connected to the balancing valve through a second filter; one path of the balance valve is sequentially connected with a first pressure sensor, a first flowmeter, a first flow regulating valve and a mixing valve, the other path of the balance valve is sequentially connected with a second pressure sensor, a second flowmeter, a second flow regulating valve and a mixing valve, an outlet of the mixing valve is sequentially connected with an electromagnetic switch valve, a third pressure sensor and a gas outlet, and a gas content analyzer is arranged between the third pressure sensor and the gas outlet;
the first pressure sensor, the second pressure sensor and the third pressure sensor are respectively connected with a controller, the controller is respectively connected with the touch screen, the gas content analyzer, the first flowmeter and the second flowmeter, the controller is sequentially connected with the first servo driver, the first servo motor and the first flow regulating valve, and the controller is sequentially connected with the second servo driver, the second servo motor and the second flow regulating valve;
the formula of the gas content after mixing is as follows:
M=N1/(N1+N2)=f（T1、T2、T3、H1、 H2）；
in the formula: m is the ratio of the two paths of mixed gas, namely the content of one path of gas detected by a gas content analyzer, and the path of N1 is set as the detection path of the gas content analyzer;
n1 is the content of one path of gas detected by the first flowmeter;
n2 is the content of the other path of gas detected by the second flowmeter;
t1 is the pressure of the incoming gas detected by the first pressure sensor;
t2 is the pressure of the incoming gas detected by the second pressure sensor;
t3 is the outlet pressure of the mixed gas detected by the third pressure sensor;
h1 is the adjusting height of the valve core in the first flow adjusting valve;
h2 is the adjusting height of the valve core in the second flow adjusting valve;
setting N2, T2 and H2 to the set values by the controller 16 without changing, neglecting the effect of T3 on M;
M= f（T1、H1）；
when T1 is not changed and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T1 is not changed and M is larger than the set value, the controller 16 controls H1 to descend to reduce the content of M;
when T1 becomes smaller and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T1 becomes larger and M is larger than the set value, the controller 16 controls H1 to descend to reduce the content of M;
when the effect of T3 on M cannot be ignored, the N2, T2 and H2 are set by the controller 16 to the set values without changing, ignoring the change in T1:
M= f（H1、T3）；
when T3 is changed and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T3 changes and M is greater than the set point, the controller 16 controls H1 to decrease the content of M.
The first flow regulating valve or the second flow regulating valve is provided with a throttle valve body, both ends of the throttle valve body are respectively provided with an air inlet and an air outlet, the upper part of the inner side is provided with a sealing platform, a sealing pad is arranged above the sealing platform, a throttling column is attached to the middle parts of the sealing platform and the sealing pad, a rack of a gear rack is arranged above the throttling column, a gear of the gear rack is arranged on the side surface of the rack, the gear of the gear rack is connected with a first servo driver or a second servo driver, the throttle columns of the first flow regulating valve and the second flow regulating valve correspond to H1 and H2, the value of H1 is converted by the gear ratio of the gear rack, the pulse signal value of the first servo driver and the single step rotation angle of the first servo motor, the value of H2 is converted through the gear ratio of the gear rack, the pulse signal value of the second servo driver and the single-step rotation angle of the second servo motor.
And a one-way valve is arranged between the balance valve and the first filter, and a one-way valve is arranged between the balance valve and the second filter.
And an inverted cone is arranged below the throttling column.
The middle parts of the sealing table and the sealing gasket are respectively provided with concentric holes with the same size.
The sealing gasket is an annular ring.
The throttling column is a cylinder.
The lower plane of the sealing platform is coplanar with the upper planes of the air inlet and the air outlet respectively.
The lower planes of the air inlet and the air outlet are coplanar.
The gas content analyzer is one of a carbon dioxide content analyzer, an argon content analyzer, a nitrogen content analyzer and an oxygen content analyzer.
The first inlet of the invention is connected to the balance valve through the first filter, and the second inlet is connected to the balance valve through the second filter; one path of the balance valve is sequentially connected with a first pressure sensor, a first flowmeter, a first flow regulating valve and a mixing valve, the other path of the balance valve is sequentially connected with a second pressure sensor, a second flowmeter, a second flow regulating valve and a mixing valve, an outlet of the mixing valve is sequentially connected with an electromagnetic switch valve, a third pressure sensor and a gas outlet, and a gas content analyzer is arranged between the third pressure sensor and the gas outlet; the first pressure sensor, the second pressure sensor and the third pressure sensor are respectively connected with the controller, the controller is respectively connected with the touch screen, the gas content analyzer, the first flowmeter and the second flowmeter, the controller is sequentially connected with the first servo driver, the first servo motor and the first flow regulating valve, and the controller is sequentially connected with the second servo driver, the second servo motor and the second flow regulating valve; the invention can be adjusted according to the inlet and outlet pressure, has wide application range, is suitable for various complex working conditions, and has good adjusting real-time property and accuracy.
Drawings
FIG. 1 is a schematic view of the piping connection of the present invention;
FIG. 2 is a schematic diagram of the control connection of the present invention;
FIG. 3 is a schematic structural view of the first flow control valve or the second flow control valve of the present invention;
FIG. 4 is a block diagram of a prior art pipeline of the present invention;
FIG. 5 is a cross-sectional view of a prior art balancing valve of the present invention;
FIG. 6 is a cross-sectional view of a prior art compounding valve of the present invention;
in the figure: 1. the gas content analyzer comprises a first inlet, a second inlet, a first filter, a second filter, a first inlet, a second filter, a second inlet, a second filter, a balance valve, a first pressure sensor, a second pressure sensor, a first flowmeter, a second flowmeter, a first flowmeter regulating valve, a second flowmeter regulating valve, a balance valve, a second flowmeter regulating valve, a mixing valve, a second flowmeter, a solenoid switch valve, a third pressure sensor, a gas outlet, a touch screen, a gas content analyzer, a first servo driver, a second servo driver, a first servo motor, a second servo motor, a throttle valve body, a gas inlet, a gas outlet, a gas content analyzer, a gas.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
An automatic adjusting method of a closed-loop gas proportioning bin comprises the following steps: a first inlet 1, the first inlet 1 being connected to a balancing valve 5 through a first filter 3, a second inlet 2, the second inlet 2 being connected to the balancing valve 5 through a second filter 4; one path of the balance valve 5 is sequentially connected with a first pressure sensor 6, a first flow meter 8, a first flow regulating valve 10 and a mixing valve 12, the other path is sequentially connected with a second pressure sensor 7, a second flow meter 9, a second flow regulating valve 11 and a mixing valve 12, an outlet of the mixing valve 12 is sequentially connected with an electromagnetic switch valve 13, a third pressure sensor 14 and a gas outlet 15, and a gas content analyzer 18 is arranged between the third pressure sensor 14 and the gas outlet 15; the first pressure sensor 6, the second pressure sensor 7 and the third pressure sensor 14 are respectively connected with a controller 16, the controller 16 is respectively connected with a touch screen 17, a gas content analyzer 18, a first flow meter 8 and a second flow meter 9, the controller 16 is sequentially connected with a first servo driver 19, a first servo motor 21 and a first flow regulating valve 10, and the controller 16 is sequentially connected with a second servo driver 20, a second servo motor 22 and a second flow regulating valve 11;
the formula of the gas content after mixing is as follows:
M=N1/(N1+N2)=f（T1、T2、T3、H1、 H2）；
in the formula: m is the ratio of the two paths of mixed gas, namely the content of one path of gas detected by the gas content analyzer 18, and the path of N1 is set as the detection path of the gas content analyzer 18;
n1 is the content of the one-way gas detected by the first flow meter 8;
n2 is the content of the other gas detected by the second flowmeter 9;
t1 is the pressure of the incoming gas detected by the first pressure sensor 6;
t2 is the pressure of the one-way incoming gas detected by the second pressure sensor 7;
t3 is the outlet pressure of the mixed gas detected by the third pressure sensor 14;
h1 is the height of the valve element in the first flow rate adjustment valve 10;
h2 is the height of the valve element in the second flow control valve 11;
setting N2, T2 and H2 to the set values by the controller 16 without changing, neglecting the effect of T3 on M;
M= f（T1、H1）；
when T1 is not changed and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T1 is not changed and M is larger than the set value, the controller 16 controls H1 to descend to reduce the content of M;
when T1 becomes smaller and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T1 becomes larger and M is larger than the set value, the controller 16 controls H1 to descend to reduce the content of M;
when the effect of T3 on M cannot be ignored, the N2, T2 and H2 are set by the controller 16 to the set values without changing, ignoring the change in T1:
M= f（H1、T3）；
when T3 is changed and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T3 changes and M is greater than the set point, the controller 16 controls H1 to decrease the content of M.
The first flow regulating valve 10 or the second flow regulating valve 11 is provided with a throttle body 23, two ends of the throttle body 23 are respectively provided with an air inlet 24 and an air outlet 25, the upper part of the inner side is provided with a sealing platform 26, a sealing gasket 27 is arranged above the sealing platform 26, a throttle column 28 is arranged in the middle of the sealing platform 26 and the sealing gasket 27 in an attaching mode, a rack of a gear rack 29 is arranged above the throttle column 28, the side surface of the rack is provided with a gear of the gear rack 29, the gear of the gear rack 29 is connected with a first servo driver 19 or a second servo driver 20, the throttle columns 28 of the first flow regulating valve 10 and the second flow regulating valve 11 correspond to H1 and H2, the value of H1 passes through the transmission ratio of the gear rack 29 and the pulse signal value, the value of H2 is converted by the single step rotation angle of the first servo motor 21, the transmission ratio of the rack and pinion 29, the pulse signal value of the second servo driver 20 and the single step rotation angle of the second servo motor 22.
A one-way valve is arranged between the balance valve 5 and the first filter 3, and a one-way valve is arranged between the balance valve 5 and the second filter 4. The inductive heads of the first pressure sensor 6, the second pressure sensor 7 and the third pressure sensor 14 respectively extend into the pipeline. The lower part of the throttling column 28 is an inverted cone. The middle parts of the sealing platform 26 and the sealing gasket 27 are respectively provided with concentric holes with the same size. The seal 27 is an annular ring. The throttle post 28 is cylindrical. The lower plane of the sealing land 26 is coplanar with the upper planes of the air inlet 24 and the air outlet 25, respectively. The lower planes of the air inlet 24 and the air outlet 25 are coplanar. The gas content analyzer 18 is one of a carbon dioxide content analyzer, an argon content analyzer, a nitrogen content analyzer, and an oxygen content analyzer.
The first pressure sensor 6, the second pressure sensor 7, and the third pressure sensor 14 are gas pressure sensors. Two sides of the balance valve 5 are respectively provided with an inlet and an outlet, and the two paths of gas respectively enter the balance valve 5 and are balanced in pressure through a balance leather pad inside the balance valve 5. The first filter 3 and the second filter 4 are gas filters. The two paths of gas after pressure balance are mixed inside the mixing valve 12 and led out through the outlet of the mixing valve 12. The first flow meter 8 and the second flow meter 9 are gas flow rate measuring devices that detect the flow rate of gas flowing therethrough. The gas content analyzer 18 is a carbon dioxide content analyzer, an argon content analyzer, a nitrogen content analyzer, or an oxygen content analyzer, and detects the content of the mixed gas by a sensor.
The first pressure sensor 6, the second pressure sensor 7, the third pressure sensor 14, the mixing valve 12, the gas content analyzer 18, the electromagnetic switch valve 13, the balance valve 5, the first filter 3, the second filter 4, the first flowmeter 8, the second flowmeter 9, the controller 16, the touch screen 17, the first servo driver 19, the first servo motor 21, the second servo driver 20 and the second servo motor 22 are fully open devices and are open products.
One path of gas passes through the first inlet 1, and enters the balance valve 5 after impurities in the gas are filtered by the first filter 3; the other path of gas enters a balance valve 5 after impurities in the gas are filtered by a second filter 4. After the pressure of two paths of gases is balanced through the leather mat by the balance valve 5, one path of gases passes through the first pressure sensor 6, the first flowmeter 8 and the first flow regulating valve 10 and enters the mixing valve 12, the other path of gases passes through the second pressure sensor 7, the second flowmeter 9 and the second flow regulating valve 11 and enters the mixing valve 12, and the two paths of gases are mixed inside the mixing valve 12 and then pass through the electromagnetic switch valve 13, the third pressure sensor 14 and the gas outlet 15 to complete proportioning. The gas content analyzer 18 analyzes the content of the mixed gas.
The first pressure sensor 6, the second pressure sensor 7 and the third pressure sensor 14 respectively monitor the pressure of the two paths of gas before mixing and send the monitored pressure signals to the controller 16, the gas content analyzer 18 sends the detected mixed gas content signals to the controller 16, and the first flow meter 8 and the second flow meter 9 send the detected flow signals of the two paths of gas before mixing to the controller 16.
The controller 16 controls the first flow regulating valve 10 and the second flow regulating valve 11 to regulate signals of the two gases according to detection signals of the first pressure sensor 6, the second pressure sensor 7, the third pressure sensor 14, the first flow meter 8, the second flow meter 9 and the gas content analyzer 18. One of the two paths of gas before adjustment enters the throttle valve body 23, the gas enters from the gas inlet 24 and exits from the gas outlet 25, and the throttle column 28 is sealed by the sealing platform 26 and the sealing gasket 27 to prevent the gas from overflowing. The rack of the gear rack 29 is arranged above the throttling column 28, the gear of the gear rack 29 is arranged on the side surface of the rack, and the gear of the gear rack 29 is connected with the first servo driver 19 or the second servo driver 20.
The controller 16 respectively controls the first servo driver 19 and the second servo driver 20, when the content of the mixed gas is smaller than or larger than a set value, the controller 16 controls the first servo driver 19 to drive the first servo motor 21 to rotate, so that the gear of the gear rack 29 is driven to drive the throttle column 28 to move up and down through the gear rack 29 structure, the length of the throttle column 28 entering the throttle valve body 23 is changed, the flow channel of the gas flow in the throttle valve body 23 is adjusted, the flow of one of the two gases is adjusted, and the ratio of the mixed gas is adjusted. When the content of the mixed gas is smaller than or larger than a set value, the controller 16 controls the second servo driver 20 to drive the second servo motor 22 to rotate, so that the gear driving the rack 29 drives the throttle column 28 to move up and down through the rack 29, the length of the throttle column 28 entering the throttle valve body 23 is changed, the flow passage of the gas flow in the throttle valve body 23 is adjusted, the flow rate of one of the two paths of gas is adjusted, and the proportion of the mixed gas is adjusted.
The controller 16 and the touch screen 17 are interactive devices, and the touch screen 17 displays detection signals of the first pressure sensor 6, the second pressure sensor 7, the third pressure sensor 14, the first flowmeter 8, the second flowmeter 9 and the gas content analyzer 18 received by the controller 16 and displays the detection signals in real time. Meanwhile, the content of the mixed gas and the flow of the two paths of gas are set through the touch screen 17.
When the pressure signal detected by one of the first pressure sensor 6 and the second pressure sensor 7 is lower than the set value, the pressure signal is sent to the controller 16, and the controller 16 controls the electromagnetic switch valve 13 to close and cut off the pipeline.
A one-way valve is arranged between the balance valve 5 and the first filter 3, and a one-way valve is arranged between the balance valve 5 and the second filter 4 to prevent the two paths of gas from flowing backwards. The inductive heads of the first pressure sensor 6, the second pressure sensor 7 and the third pressure sensor 14 respectively extend into the pipeline, so that the detection is convenient. The lower part of the throttling column 28 is an inverted cone, so that gas is effectively blocked, and the gas flow is convenient to adjust. The middle parts of the sealing platform 26 and the sealing gasket 27 are respectively provided with concentric holes with the same size, so that the throttling columns 28 can be conveniently placed. The sealing gasket 27 is an annular ring, so that the model selection is convenient. The throttle post 28 is a cylinder, which facilitates assembly. The lower plane of the sealing platform 26 is coplanar with the upper planes of the gas inlet 24 and the gas outlet 25 respectively, so that gas can flow through the sealing platform conveniently. The lower planes of the gas inlet 24 and the gas outlet 25 are coplanar, facilitating gas flow therethrough. The gas content analyzer 18 is one of a carbon dioxide content analyzer, an argon content analyzer, a nitrogen content analyzer and an oxygen content analyzer, and the gas content to be analyzed by the gas content analyzer 18 is selected according to the mixed gas requirement of the actual requirement.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A closed-loop gas proportioning bin automatic adjustment method is characterized by comprising the following steps:
-a first inlet (1), said first inlet (1) being connected to a balancing valve (5) through a first filter (3), -a second inlet (2), said second inlet (2) being connected to a balancing valve (5) through a second filter (4); one path of the balance valve (5) is sequentially connected with a first pressure sensor (6), a first flowmeter (8), a first flow regulating valve (10) and a mixing valve (12), the other path is sequentially connected with a second pressure sensor (7), a second flowmeter (9), a second flow regulating valve (11) and the mixing valve (12), an outlet of the mixing valve (12) is sequentially connected with an electromagnetic switch valve (13), a third pressure sensor (14) and a gas outlet (15), and a gas content analyzer (18) is arranged between the third pressure sensor (14) and the gas outlet (15);
the first pressure sensor (6), the second pressure sensor (7) and the third pressure sensor (14) are respectively connected with a controller (16), the controller (16) is respectively connected with a touch screen (17), a gas content analyzer (18), a first flowmeter (8) and a second flowmeter (9), the controller (16) is sequentially connected with a first servo driver (19), a first servo motor (21) and a first flow regulating valve (10), and the controller (16) is sequentially connected with a second servo driver (20), a second servo motor (22) and a second flow regulating valve (11);
the formula of the gas content after mixing is as follows:
M=N1/(N1+N2)=f（T1、T2、T3、H1、 H2）；
in the formula: m is the ratio of the two paths of mixed gases, namely the content of one path of gas detected by the gas content analyzer (18), and the path of N1 is set as the detection path of the gas content analyzer (18);
n1 is the content of one path of gas detected by the first flowmeter (8);
n2 is the content of the other path of gas detected by the second flowmeter (9);
t1 is the pressure of one path of inlet gas detected by the first pressure sensor (6);
t2 is the pressure of one path of inlet gas detected by a second pressure sensor (7);
t3 is the outlet pressure of the mixed gas detected by the third pressure sensor (14);
h1 is the adjusting height of the valve core in the first flow adjusting valve (10);
h2 is the adjusting height of the valve core in the second flow adjusting valve (11);
setting N2, T2 and H2 to the set values by the controller 16 without changing, neglecting the effect of T3 on M;
M= f（T1、H1）；
when T1 is not changed and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T1 is not changed and M is larger than the set value, the controller 16 controls H1 to descend to reduce the content of M;
when T1 becomes smaller and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T1 becomes larger and M is larger than the set value, the controller 16 controls H1 to descend to reduce the content of M;
when the effect of T3 on M cannot be ignored, the N2, T2 and H2 are set by the controller 16 to the set values without changing, ignoring the change in T1:
M= f（H1、T3）；
when T3 is changed and M is smaller than the set value, the controller 16 controls H1 to rise and increase the content of M;
when T3 changes and M is greater than the set point, the controller 16 controls H1 to decrease the content of M.
2. The automatic regulating method of the closed-loop gas proportioning bin of claim 1, wherein the first flow regulating valve (10) or the second flow regulating valve (11) is provided with a throttle body (23), two ends of the throttle body (23) are respectively provided with a gas inlet (24) and a gas outlet (25), the upper part of the inner side of the throttle body (23) is provided with a sealing table (26), a sealing gasket (27) is arranged above the sealing table (26), a throttling column (28) is attached to the middle parts of the sealing table (26) and the sealing gasket (27), a rack of a rack and pinion (29) is arranged above the throttling column (28), the side surface of the rack is provided with a gear of the rack and pinion (29), the gear of the rack and pinion (29) is connected with a first servo driver (19) or a second servo driver (20), and the throttling columns (28) of the first flow regulating valve (10) and the second flow regulating valve (11) correspond to H1, H2, wherein the value of H1 is converted through the transmission ratio of the gear rack (29), the pulse signal value of the first servo driver (19) and the single-step rotation angle of the first servo motor (21), and the value of H2 is converted through the transmission ratio of the gear rack (29), the pulse signal value of the second servo driver (20) and the single-step rotation angle of the second servo motor (22).
3. A method for automatically adjusting a closed-loop gas proportioning device according to claim 1, wherein a check valve is arranged between the balancing valve (5) and the first filter (3), and a check valve is arranged between the balancing valve (5) and the second filter (4).
4. The method for automatically adjusting a closed-loop gas proportioning bin according to claim 1, wherein an inverted cone is arranged below the throttling column (28).
5. The automatic regulating method of a closed-loop gas proportioning bin according to claim 1, wherein the middle parts of the sealing table (26) and the sealing pad (27) are respectively provided with concentric holes with the same size.
6. A method for automatically adjusting a closed-loop gas proportioning device according to claim 1 wherein the gasket (27) is an annular ring.
7. A method for automatically adjusting a closed-loop gas proportioning device according to claim 1, wherein the throttling column (28) is a cylinder.
8. A method for automatically adjusting a closed-loop gas proportioning bin according to claim 1, wherein the lower plane of the sealing table (26) is coplanar with the upper planes of the gas inlet (24) and the gas outlet (25), respectively.
9. A method for automatically adjusting a closed-loop gas proportioning bin according to claim 1 wherein the lower planes of the gas inlet (24) and gas outlet (25) are coplanar.
10. The method as claimed in claim 1, wherein the gas content analyzer (18) is one of a carbon dioxide content analyzer, an argon content analyzer, a nitrogen content analyzer, and an oxygen content analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324274.1A CN111437742A (en) | 2020-04-22 | 2020-04-22 | Automatic adjusting method for closed-loop gas proportioning cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324274.1A CN111437742A (en) | 2020-04-22 | 2020-04-22 | Automatic adjusting method for closed-loop gas proportioning cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111437742A true CN111437742A (en) | 2020-07-24 |
Family
ID=71656252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010324274.1A Pending CN111437742A (en) | 2020-04-22 | 2020-04-22 | Automatic adjusting method for closed-loop gas proportioning cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111437742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113813803A (en) * | 2021-06-08 | 2021-12-21 | 福尼斯(南京)表面工程技术有限公司 | High-precision multi-component gas proportioning method for surfacing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349926A (en) * | 2013-05-31 | 2013-10-16 | 济南华信自动化工程有限公司 | Fully-automatic proportioning bin |
| CN105903365A (en) * | 2016-07-01 | 2016-08-31 | 广州新龙浩工业设备有限公司 | High-precision nitrogen helium mixing device with recycling function |
| CN106064026A (en) * | 2016-07-26 | 2016-11-02 | 液化空气（中国）研发有限公司 | Multicomponent gas mixing system |
| AT521524A1 (en) * | 2018-07-17 | 2020-02-15 | Avl List Gmbh | Gas mixing device for the calibration of gas analyzers |
-
2020
- 2020-04-22 CN CN202010324274.1A patent/CN111437742A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349926A (en) * | 2013-05-31 | 2013-10-16 | 济南华信自动化工程有限公司 | Fully-automatic proportioning bin |
| CN105903365A (en) * | 2016-07-01 | 2016-08-31 | 广州新龙浩工业设备有限公司 | High-precision nitrogen helium mixing device with recycling function |
| CN106064026A (en) * | 2016-07-26 | 2016-11-02 | 液化空气（中国）研发有限公司 | Multicomponent gas mixing system |
| AT521524A1 (en) * | 2018-07-17 | 2020-02-15 | Avl List Gmbh | Gas mixing device for the calibration of gas analyzers |
Non-Patent Citations (1)
| Title |
|---|
| 钱晓华: "《自动调节设备》", 30 November 1996, 中国电力出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113813803A (en) * | 2021-06-08 | 2021-12-21 | 福尼斯(南京)表面工程技术有限公司 | High-precision multi-component gas proportioning method for surfacing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111928119B (en) | Mine gas safe blending system and gas blending ratio control method | |
| CN103410718A (en) | Multifunctional testing table for property and application of liquid and gas jet pump | |
| CN205164272U (en) | Online filtration metering device of cement grinding aid | |
| CN111437742A (en) | Automatic adjusting method for closed-loop gas proportioning cabinet | |
| JPS5944271A (en) | Gas destributor for medical apparatus | |
| CN111298669A (en) | Automatic adjustment type closed-loop gas proportioning cabinet | |
| CN201107073Y (en) | Electronic type gas meter | |
| CN113006768A (en) | Gas well scaling simulation device and simulation method | |
| CN202346770U (en) | Automatic hydrogenation device for nitrogen purification | |
| CN201014015Y (en) | Electronic type dynamic balancing electric regulating valve | |
| CN201199330Y (en) | Integration flux automatic control device | |
| CN201548428U (en) | Partial flow dilution sampling system | |
| CN202909645U (en) | Automatic nitrogen-hydrogen proportioning and mixing device | |
| CN212513605U (en) | Flow resistance measurement test system | |
| CN112892393A (en) | Online liquid preparation system | |
| AU775025B2 (en) | Arrangement for improved water-oil ratio measurements | |
| CN201103730Y (en) | Corrosion resistant scale overflow valve used for high-pressure small-flow equipment | |
| CN206563104U (en) | A kind of clear water faucet and a kind of water-purifying device | |
| CN202393654U (en) | Novel multipurpose bursting test bench | |
| CN110479130B (en) | Automatic gas-liquid control fluid proportioning device and fluid mixing system | |
| CN209264273U (en) | A kind of device for measured power branch gear drive atomizer lubrication property | |
| CN219533083U (en) | Gas detection adjusting device | |
| CN207958410U (en) | A kind of continous way film device for xylose concentration | |
| CN207351867U (en) | It is a kind of can on-line checking gaseous jet simulation device | |
| CN201507434U (en) | Laboratory water purifier water purification pump testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200724 |