CN209784280U - Multi-position air bag sample introduction device - Google Patents
Multi-position air bag sample introduction device Download PDFInfo
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- CN209784280U CN209784280U CN201920515299.2U CN201920515299U CN209784280U CN 209784280 U CN209784280 U CN 209784280U CN 201920515299 U CN201920515299 U CN 201920515299U CN 209784280 U CN209784280 U CN 209784280U
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Abstract
The utility model provides a multi-position air bag sample introduction device in the technical field of gas detection equipment, which comprises a control box and a sampling box; an air pump is arranged in the control box, a control panel is arranged on the surface of the control box, and the control panel is electrically connected with the air pump; the sampling box is provided with a first air inlet pipe, air receiving bags and a sample inlet pipe, wherein the first air inlet pipe is a blowing air pipe or a dilution air pipe, the number of the air receiving bags is multiple, the sample inlet position of each air receiving bag is independently connected with an electromagnetic valve, the first air inlet pipe and the air receiving bags are sequentially communicated with the sample inlet pipe, and the first air inlet pipe is positioned at the starting end of the sample inlet pipe; the electromagnetic valves connected to each air receiving bag are connected in parallel to the control board, and the sampling pipes are communicated with the air extracting pump. The device adopts the electromagnetic valves to control the air bags to be led in and injected, each electromagnetic valve independently controls one air bag to enter the valve device quantitative ring, and any air bag position can be randomly selected to be injected under the real complex working environment, so that the problem of analysis efficiency is solved.
Description
Technical Field
The utility model relates to a gaseous check out test set technical field specifically, relates to a multiposition air pocket sampling device.
Background
Gas chromatography (GC for short) is a major scientific and technological achievement appearing in the fifties of the twentieth century, is a new separation and analysis technology, and is widely applied to industry, agriculture, national defense, construction and scientific research. Gas chromatography refers to chromatography using a gas as the mobile phase. Due to the fast transport speed of the sample in the gas phase, the components of the sample can reach equilibrium between the mobile phase and the stationary phase instantaneously. In addition, the materials which can be selected as the stationary phase are more, so that the gas chromatography is a separation analysis method with high analysis speed and high separation efficiency.
the traditional air bag sample introduction needs to use manpower to extrude the gas in the air bag into a quantitative ring of a valve device, so that the gas sample introduction to gas chromatography and analysis detection is realized.
The existing air bag sample injector can be connected with a six-position or sixteen-position air bag, the air bag is not required to be manually extruded, the gas in the air bag is introduced into a gas chromatograph, and the sequential sample injection switching of the air bags is required.
the existing gas bag sample injector does not have a gas dilution function, and the gas dilution function is necessary for calibrating an instrument when gas is injected. The conventional treatment is to dilute the gas into the air bag by hand or other means and then to inject the sample using an air bag injector.
through the search of the prior art, the Chinese utility model has the patent number of CN201721502212.5, is named as a single-path air bag sample introduction device, comprises a chromatograph, an air inlet and an air outlet are arranged on the chromatograph, the air inlet and the air outlet are connected through a pipeline, a sample gas inlet joint and a three-way switching valve are also included, miniature diaphragm pump, delay timer and evacuation connect, the one end of sample gas inlet connection is passed through the pipeline and is connected with the air inlet of chromatograph, the other one end and the air supply of sample gas inlet connection are connected, the first port of three-way switching valve is connected with the gas outlet of chromatograph, the second port of three-way switching valve is connected with the air inlet of miniature diaphragm pump, the third port of three-way switching valve passes through the pipeline and directly connects with the evacuation, the gas outlet of miniature diaphragm pump passes through the pipeline and connects with the evacuation, the signal output part of delay timer is connected with three-way switching valve and miniature diaphragm pump respectively. The utility model discloses a single pass air pocket advances kind, device simple structure, work efficiency is low.
SUMMERY OF THE UTILITY MODEL
To the defects in the prior art, the utility model aims to provide a multiposition air bag sample introduction device.
the multi-position air bag sample introduction device provided by the utility model comprises a control box and a sampling box;
An air pump is arranged in the control box, a control panel is arranged on the surface of the control box, and the control panel is electrically connected with the air pump;
the sampling box is provided with a first air inlet pipe, a plurality of air receiving bags and a sample inlet pipe, wherein the first air inlet pipe is a blowing air pipe or a diluting air pipe, the sample inlet position of each air receiving bag is independently connected with an electromagnetic valve, the first air inlet pipe and the air receiving bags are sequentially communicated with the sample inlet pipe, and the first air inlet pipe is positioned at the starting end of the sample inlet pipe;
The electromagnetic valves connected to the air receiving bags are connected to the control board in parallel, and the sampling pipes are communicated with the air suction pump.
Preferably, the sampling box is equipped with mark gas intake pipe, mark gas hybrid chamber, first intake pipe with the mark gas intake pipe passes through the sample inlet pipe communicate in mark gas hybrid chamber, first intake pipe with mark gas intake pipe independent connection has mass flow controller.
Preferably, the sampling pipe is connected with a pressure sensor, and the pressure sensor is an air exhaust flow velocity pressure sensor.
Preferably, the control panel is a touch screen control panel.
Preferably, the sampling box is communicated with the control box through a turntable.
preferably, the control box is trapezoidal in section, and the inclination angle of the control plate relative to the vertical plane is 15-30 degrees.
Preferably, the connection part of the control panel and the control box is provided with an elastic gasket.
Preferably, the bottom of the control box is provided with a movable roller.
compared with the prior art, the utility model discloses following beneficial effect has:
1. The device adopts the electromagnetic valves to control the air bags to be led in and injected, each electromagnetic valve independently controls one air bag to enter the valve device quantitative ring, and any air bag position can be randomly selected to be injected under the real complex working environment, so that the problem of analysis efficiency is solved.
2. The row valve design of the independent gas circuit that this device adopted realizes the simultaneous appearance of multiple air pockets and advances the appearance, has solved the sample concentration and has crossed when low needs a large amount of samples to advance the concentrated demand of appearance simultaneously, still can open all pipelines simultaneously and clean the purging, promotes the work efficiency who sweeps the link.
3. the device adopts small-volume module type parallel electromagnetic valves to control the air bag to be led in and injected, the number of the modules can be randomly combined, the air inlet position of the air bag is increased, and the analysis flux is effectively improved.
Further improvement is made on the basis, and the following steps can be realized:
1. The sampling device is provided with the air flow speed pressure sensor in the sampling pipeline, so that the system starts sampling when detecting that the pressure of the sampling pipeline is normal pressure, and the accuracy and the reproducibility of sampling are ensured.
2. The device integrates the standard gas preparation function, carries out corresponding proportional mixing on the standard gas and the diluent gas through the mass flow controller and the mixer, can dilute the standard gas to set concentration, and realizes the calibration work of rear-end analysis equipment.
Drawings
other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a structural outline view of the present invention;
Fig. 2 is a working principle structure diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model provides a multi-position air bag sample introduction device, which comprises a control box 1 and a sampling box 2;
An air extracting pump 11 is arranged in the control box 1, a control panel 12 is arranged on the surface of the control box 1, and the control panel 12 is electrically connected with the air extracting pump 11;
The sampling box 2 is provided with a first air inlet pipe 21, a plurality of air receiving bags 22 and a sample inlet pipe 24, the first air inlet pipe 21 is a blowing air pipe or a dilution air pipe, the sample inlet positions of the air receiving bags 22 are independently connected with an electromagnetic valve, the first air inlet pipe 21 and the air receiving bags 22 are sequentially communicated with the sample inlet pipe 24, and the first air inlet pipe 21 is positioned at the starting end of the sample inlet pipe 24;
The electromagnetic valve of each air receiving bag 22 is connected in parallel to the control board 12, and the sample inlet pipe 24 is communicated with the air pump 11.
The device realizes that the air bag sample is led into a quantitative ring of the gas chromatography valve device, and the working principle is as follows: firstly, setting pipeline purging time through the control panel 12, pressing a starting switch of the air suction pump 11, sucking clean air from the outside by the first air inlet pipeline 21 under the action of the air suction pump 11 to purge the pipeline of the sampling pipe 24, automatically closing a valve on the first air inlet pipeline 21 after purging is finished, and finishing pipeline cleaning work. Secondly, after the sample inlet pipe 24 is communicated with the air pump 11 through the quantitative ring of the external gas chromatograph device, the electromagnetic valve corresponding to the sample inlet position of the air receiving bag 22 is opened, so that the air receiving bag 22, the quantitative ring in the gas chromatograph device and the air pump 11 are sequentially communicated, and the air pump 11 is used for regularly pumping the gas in the air receiving bag 22 into the quantitative ring in the gas chromatograph device. Because the row valve design of the independent gas circuit that this device adopted, every connects an electromagnetic valve of independent connection on the air pocket 22 promptly to the electromagnetic valve parallel connection is on control panel 12, can adopt the multiple mode to advance the appearance:
Mode 1: and after the air receiving bag 22 finishes air pumping, closing the electromagnetic valve positioned at the sample injection position of the air receiving bag 22, closing the air pump 11, counting down the interval time, and repeating the steps until the set number of the sample injection of the air receiving bag 22 is finished after the interval time is finished.
Mode 2: the control panel 12 simultaneously opens the electromagnetic valve switches of the sample injection positions of the plurality of air receiving bags 22, the sample injection positions can be randomly selected, after the plurality of air receiving bags 22 are exhausted, the electromagnetic valves connected with the air receiving bags 22 are closed, the air exhaust pump 11 is closed, and the sample injection task of the air receiving bags 22 with set positions is completed at one time. The sample injection can be completed in batches according to the actual situation.
The device adopts the electromagnetic valves to control the air bags to be led in and injected, each electromagnetic valve independently controls one air bag to enter the valve device quantitative ring, and any air bag position can be randomly selected to be injected in a sample under a complex working environment, so that the problem of analysis efficiency is solved. Meanwhile, the invention adopts the discharge valve design of the single gas circuit, can realize simultaneous sample injection of a plurality of gas bags, and solves the problem that a large amount of samples need to be simultaneously injected and concentrated when the concentration of the samples is too low. In addition, the small-size module type parallel electromagnetic valve is adopted to control the air bag to be led in and injected, the number of the modules can be randomly combined, the air inlet position of the air bag is increased, and the analysis flux is effectively improved. The system cleaning of the prior invention can be carried out only in sequence and units, and the design of the exhaust valve of the invention can simultaneously open all gas paths for quick purging and cleaning, thereby having high efficiency.
Sampling box 2 is equipped with standard gas intake pipe 23, standard gas hybrid chamber 4, first intake pipe 21 with standard gas intake pipe 23 passes through advance appearance pipe 24 communicate in standard gas hybrid chamber 4, first intake pipe 21 with standard gas intake pipe 23 independent connection has mass flow controller. The first air inlet pipe 21 is filled with dilution gas, the standard gas inlet pipe 23 is filled with standard gas, the standard gas and the dilution gas are filled into the standard gas mixing cavity 4 according to corresponding proportion through the mass flow controller MFC, and when the standard gas needs to be prepared, a standard gas preparation key on the control board 12 is selected to dilute the standard gas to a certain concentration so as to realize calibration of rear-end analysis equipment. This device uses accurate flow control and introduces the gas mixing chamber on the gas circuit, has integrated the standard gas preparation function, realizes the dilution function of air bag standard gas, solves the standard gas preparation problem, nevertheless because and can introduce clean gas because of the purge gas pipe of setting up at the gas circuit initiating terminal to steerable velocity of flow and time sweep entire system, can ensure the cleanness of system.
The sampling pipe 24 is connected with a pressure sensor 25, and the pressure sensor 25 is an air exhaust flow velocity pressure sensor. The pressure sensor 25 for measuring the pumping flow rate is added at the output end of the gas path of the sample inlet pipe 24, compared with the prior art that a peristaltic pump with fixed pumping speed is adopted to easily cause the change of the pressure in the system to form negative pressure in the pumping stage, the actual sample inlet needs the whole system to ensure the accuracy and the repeatability of gas introduction under the normal pressure sample inlet, in addition, the pumping flow rate and the time are fixed and can not be adjusted, in a complex sample environment, the sample can not be quantitatively and accurately pumped into the rear-end analysis equipment by 100 percent, the device starts the sample inlet when the pressure sensor 25 detects that the pressure in the pipeline of the sample inlet pipe 24 is the normal pressure, and controls the pumping flow rate through a flow regulating valve, thereby ensuring the accuracy and the repeatability of the sample inlet. Reproducibility, namely continuous multiple sample injection, and small deviation of the obtained response signal.
The control panel 12 is a touch screen control panel. Compared with the prior art, the device adopts a key-type simple design, the controllable parameters are few, the control precision is low, the device uses the touch screen for control, the control parameters can be accurately set, such as time, sampling digit, flow rate, pressure, the switch of a single electromagnetic valve and the like, meanwhile, the accurate purging time and sampling time can be set, the pumping flow rate can be adjusted and displayed, and the pressure value of a display system pipeline is set, so that the quantitative gas extraction and the gas inlet under the normal pressure state are ensured, the retention pollution is effectively eliminated, and the sample is accurately and quantitatively introduced.
The sampling box 2 is communicated with the control box 1 through a rotary disc 3. Compared with the prior art, the device adopts a single vertical face design, the sample receiving bag 22 is positioned on one vertical face, if the sample receiving position is to be enlarged, the device is required to be large, the occupied space resources and the cost are increased, the sampling box 2 is communicated on the control box 1 through the turntable 3 by the device, the turntable 3 enables the sampling box 2 to be changed into a rotary cubic structure, the rotating angle of the sampling box is preferably 180 degrees, at the moment, four vertical faces of the sampling box 2 are provided with the gas receiving bag 22 mounting positions, the analysis flux is greatly improved, the space resources are saved, and the production cost is reduced.
The section of the control box 1 is trapezoidal, and the inclination angle of the control plate 12 relative to the vertical plane is 15-30 degrees. The control box 1 is of a trapezoidal structure, the inclination angle of the side, provided with the control panel 12, opposite to the vertical plane is set to be 15-30 degrees, the human body efficiency principle is met, the fatigue of a person when the person operates a switch on the control panel 12 is reduced, and the working efficiency and the accuracy are improved.
An elastic gasket is arranged at the joint of the control panel 12 and the control box 1. The elastic gasket is additionally arranged at the joint of the control panel 12 and the control box 1, so that the damage of vibration to the control panel 12 can be effectively reduced, and the safety of circuit connection on the control panel 12 is improved.
the bottom of the control box 1 is provided with a movable roller. Install the removal gyro wheel in the bottom of control box 1, and remove the gyro wheel and have self-locking function, make things convenient for sampling device's removal on the basis that guarantees control box 1 is firm.
in conclusion, the device adopts the electromagnetic valves to control the air bags to be introduced and injected, each electromagnetic valve independently controls one air bag to enter the quantitative ring of the valve device, and any air bag position can be randomly selected to be injected in a real complex working environment, so that the problem of analysis efficiency is solved; the device adopts the valve design of the single gas circuit, realizes the simultaneous sample injection of a plurality of gas bags, solves the requirement that a large amount of samples need to be simultaneously injected and concentrated when the concentration of the samples is too low, and can simultaneously open all pipelines for cleaning and purging, thereby improving the working efficiency of the purging link; the device adopts small-volume module type parallel electromagnetic valves to control the introduction and sample introduction of air bags, the number of modules can be combined at will, and the analysis flux is effectively improved; according to the device, the sampling flow rate pressure sensor is added into the sampling pipeline, so that the system starts sampling only when detecting that the pressure of the sampling pipeline is normal pressure, and the accuracy and the repeatability of sampling are ensured; the device integrates the standard gas preparation function, carries out corresponding proportional mixing on the standard gas and the diluent gas through the mass flow controller and the mixer, can dilute the standard gas to set concentration, and realizes the calibration work of rear-end analysis equipment.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A multi-position air bag sample introduction device is characterized by comprising a control box (1) and a sampling box (2);
an air suction pump (11) is arranged in the control box (1), a control plate (12) is arranged on the surface of the control box (1), and the control plate (12) is electrically connected with the air suction pump (11);
The sampling box (2) is provided with a first air inlet pipe (21), air receiving bags (22) and a sample inlet pipe (24), the first air inlet pipe (21) is a blowing air pipe or a dilution air pipe, the air receiving bags (22) are multiple, the sample inlet position of each air receiving bag (22) is independently connected with an electromagnetic valve, the first air inlet pipe (21) and the air receiving bags (22) are sequentially communicated with the sample inlet pipe (24), and the first air inlet pipe (21) is located at the starting end of the sample inlet pipe (24);
The electromagnetic valve connected with each air receiving bag (22) is connected in parallel with the control board (12), and the sampling pipe (24) is communicated with the air suction pump (11).
2. The multi-position air bag sample introduction device according to claim 1, wherein the sampling box (2) is provided with a standard gas inlet pipe (23) and a standard gas mixing cavity (4), the first gas inlet pipe (21) and the standard gas inlet pipe (23) are communicated with the standard gas mixing cavity (4) through the sample introduction pipe (24), and the first gas inlet pipe (21) and the standard gas inlet pipe (23) are independently connected with a mass flow controller.
3. The multi-position air bag sample introduction device according to claim 2, wherein the sample introduction pipe (24) is connected with a pressure sensor (25), and the pressure sensor (25) is an air exhaust flow rate pressure sensor.
4. the multi-position air bag sample introduction device according to claim 1, wherein the control board (12) is a touch screen control board.
5. The multi-position air bag sample introduction device according to claim 1, wherein the sampling box (2) is communicated with the control box (1) through a turntable (3).
6. A multi-position air bag sample introduction device according to claim 1, wherein said control box (1) is trapezoidal in cross-section, and said control plate (12) is inclined at an angle of 15 ° to 30 ° with respect to a vertical plane.
7. The multi-position air bag sample introduction device according to claim 1, wherein an elastic gasket is provided at the connection of the control plate (12) and the control box (1).
8. The multi-position air bag sample introduction device according to claim 1, wherein a moving roller is installed at the bottom of the control box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515299.2U CN209784280U (en) | 2019-04-16 | 2019-04-16 | Multi-position air bag sample introduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515299.2U CN209784280U (en) | 2019-04-16 | 2019-04-16 | Multi-position air bag sample introduction device |
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| Publication Number | Publication Date |
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| CN209784280U true CN209784280U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920515299.2U Active CN209784280U (en) | 2019-04-16 | 2019-04-16 | Multi-position air bag sample introduction device |
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| CN (1) | CN209784280U (en) |
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- 2019-04-16 CN CN201920515299.2U patent/CN209784280U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201009 Address after: 201100 building 6, No. 4299, Jindu Road, Minhang District, Shanghai Patentee after: Shanghai Zhenzhe Electronic Technology Co.,Ltd. Address before: 201499 room 123, building 12, No. 818, Renmin North Road, Qingcun Town, Fengxian District, Shanghai Patentee before: Shanghai Xiangyu Biotechnology Co.,Ltd. |
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| TR01 | Transfer of patent right |