Ultrafast automatic sampling switching system
Technical Field
The invention relates to the technical field of sample sampling, in particular to an ultra-fast automatic sampling switching system.
Background
Sampling is also referred to as the process of converting a continuous quantity in the time or space domain into a discrete quantity. And also refers to the process of converting analog audio to digital audio. The number of samples per second is called the sampling frequency. The sampling digit can be understood as the resolution of the acquisition card for processing sound. Sampling is the conversion of an analog signal that is continuous in both time and amplitude into a discrete analog signal that is discrete in time (with a fixed interval in time) but still continuous in amplitude under the action of a sampling pulse. The sampling is also referred to as a discretization process of the waveform. The process of converting a continuous signal into a discrete signal is called a sampling process, and is realized by a sampling switch (sampler). The physical meaning of the sampling process is the process of amplitude adjustment of the unit ideal pulse sequence δ t (t) by the input signal f (t). The sampling time of each sampling point of the existing sampling switching system is 30-60 minutes, the analysis reaction time is more than 10 minutes, the whole data volume of sampling is influenced, the efficiency is low, the interference processing capacity after the samples are switched is insufficient, and the practicability is poor.
Disclosure of Invention
The invention aims to provide an ultra-fast automatic sampling switching system, which aims to solve the problems that in the prior art, the sampling time of each sampling point of the sampling switching system is 30-60 minutes, the analysis reaction time is more than 10 minutes, the whole data volume of sampling is influenced, the efficiency is low, the interference processing capacity after the samples are switched is insufficient, and the practicability is poor.
In order to achieve the purpose, the invention provides the following technical scheme: an ultra-fast automatic sampling switching system comprises a cabinet and a centralized control screen, wherein the lower end of one side surface of the cabinet is longitudinally and fixedly provided with a ventilation grid plate by being provided with a through hole, the front side surface of the cabinet is symmetrically and movably provided with an isolation cabinet door, the upper surface of the isolation cabinet door at one end of the front side of the cabinet is fixedly provided with an observation window by being provided with a through groove, the bottom end of the inner wall of the cabinet at the rear side of the isolation cabinet door is longitudinally and fixedly provided with a plurality of negative pressure fans through a baffle, the inner wall of the cabinet above the negative pressure fans is divided into a left analysis chamber and a right sampling chamber through a middle baffle plate, one end of the side wall of the right sampling chamber is vertically and fixedly provided with an air receiving guide plate, the inner wall of the right sampling chamber outside the air receiving guide plate is sequentially and longitudinally and fixedly provided with a first sampling box, a, the inner wall of the left analysis chamber is divided by the mounting plate and is fixedly provided with PN2PURGE, TOC ON-LINE, IC ON-LINE and Ultra-fast AMC ON-LINE from bottom to top in sequence, the centralized control screen is transversely and fixedly arranged in the middle of the upper surface of the isolation cabinet door at one end of the cabinet far away from the observation window, and the centralized control screen is in signal connection with electrical equipment in the cabinet.
Preferably, the negative pressure fan is controlled by a temperature and humidity sensor arranged in the cabinet, and the negative pressure fan and the cabinet form an inner cavity through a baffle plate to complete one-way exhaust through a ventilation grid plate.
Preferably, the side face of one end, positioned outside the cabinet, of the air receiving guide plate is provided with a plurality of spiral sampling connecting pipes.
Preferably, one end of the spiral sampling connecting pipe, which is positioned inside the cabinet, is respectively communicated with the inner cavities of the first sampling box and the second sampling box through a guide pipe.
Preferably, the sampling ports of the first sampling box and the second sampling box are respectively controlled by electromagnetic valves to be independently communicated with the sampler through a conduit.
Preferably, the exhaust port of the purger is controlled by a valve through a three-way pipe to be communicated with the inner cavity of the sampler.
Preferably, the monitoring point of the Ultra-fast AMC ON-LINE is fast reacting for 3min-5min and the detection limit is 0.1ppb or beter.
Compared with the prior art, the invention has the beneficial effects that:
1. PN2PURGE, TOC ON-LINE, IC ON-LINE, Ultra-fast AMC ON-LINE and Ultra-fast AMC ON-LINE are sequentially arranged ON the inner wall of the left analysis chamber from bottom to top, monitoring points of the Ultra-fast AMC ON-LINE react for 3min to 5min quickly, the detection limit is 1ppb or beter, the integral reaction time of analysis instrument equipment is shortened while the sample collection data volume is improved, a sealed cabinet type sampling and analysis integrated structure is adopted, the problem that the data detection reliability is influenced by sample pollution is avoided, and the using effect is good.
2. The inner wall of the right sampling chamber above the sampler is provided with the purging device, so that the problem that the reliability of follow-up detection is influenced after the sample is switched can be effectively avoided, and the practicability is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is a sampling flow chart of the present invention.
In the figure: 1. a cabinet; 2. a centralized control screen; 3. a ventilation grid plate; 4. an isolation cabinet door; 5. an observation window; 6. a negative pressure fan; 7. a left analysis chamber; 8. a right sampling chamber; 9. a gas-receiving guide plate; 10. a first sampling box; 11. a second sampling box; 12. a sampler; 13. a blower; 14. PN2 PURGE; 15. TOC ON-LINE and IC ON-LINE; 16. ultra-fast AMC ON-LINE; 17. and (4) a spiral sampling connection pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, 2 and 3, in an embodiment of the present invention, an ultra-fast automatic sampling switching system includes a cabinet 1 and a centralized control screen 2, a ventilation grid 3 is longitudinally and fixedly disposed at a lower end of a side surface of the cabinet 1 through a through hole, an isolation cabinet door 4 is symmetrically and movably disposed on a front surface of the cabinet 1, an observation window 5 is fixedly disposed on an upper surface of the isolation cabinet door 4 at one end of the front side of the cabinet 1 through a through groove, a plurality of negative pressure fans 6 are longitudinally and fixedly disposed at a bottom end of an inner wall of the cabinet 1 at a rear side of the isolation cabinet door 4 through a baffle, an inner wall of the cabinet 1 above the negative pressure fans 6 is divided into a left analysis chamber 7 and a right sampling chamber 8 through a middle partition, an air receiving guide plate 9 is vertically and fixedly disposed at one end of a side wall of the right sampling chamber 8, a first sampling chamber 10, a second sampling chamber 11 and a sampler 12 are, the inner wall of a right sampling chamber 8 above a sampler 12 is vertically and fixedly provided with a blower 13 through a bracket, the inner wall of a left analysis chamber 7 is partitioned by a mounting plate and is sequentially and fixedly provided with a PN2PURGE 14, a TOC ON-LINE, an IC ON-LINE15 and an Ultra-fast AMC ON-LINE16 from bottom to top, a centralized control screen 2 is transversely and fixedly arranged in the middle of the upper surface of an isolation cabinet door 4 at one end of a cabinet 1 far away from an observation window 5, and the centralized control screen 2 is in signal connection with electrical equipment in the cabinet 1; the negative pressure fan 6 is controlled by a temperature and humidity sensor arranged in the cabinet 1, forms an inner cavity with the cabinet 1 through a baffle plate and completes one-way exhaust through the ventilation grid plate 3, and the stable and reliable environment in the cabinet 1 is ensured; the side surface of one end, positioned outside the cabinet 1, of the gas receiving guide plate 9 is provided with a plurality of spiral sampling connecting pipes 17, one end, positioned inside the cabinet 1, of each spiral sampling connecting pipe 17 is communicated with the inner cavities of the first sampling box 10 and the second sampling box 11 through guide pipes, and the gas introducing requirement during sample collection is met; sampling ports of the first sampling box 10 and the second sampling box 11 are respectively controlled by electromagnetic valves and are independently communicated with the sampler 12 through a guide pipe, and an exhaust port of the blower 13 is controlled by a valve through a three-way pipe and is communicated with an inner cavity of the sampler 12, so that the influence of residues after samples are switched on subsequent inspection is avoided; the monitoring point of the Ultra-fast AMC ON-LINE16 is quickly reacted for 3min to 5min, the detection limit is 0.1ppb or beter, the sample collection amount is improved, and the quality is ensured to be reliable; by utilizing the Ultra-fast AMC ON-LINE16 to match with PN2PURGE 14, TOC ON-LINE and IC ON-LINE15, the whole reaction time of analytical instrument equipment can be shortened while the data volume of the sample is effectively improved, and the inner wall of the right sampling chamber 8 above the sampler 12 is provided with the blower 13, so that the influence of the residual of the sample after switching ON the reliability of subsequent detection can be effectively avoided, and the using effect is good.
The working principle and the using process of the invention are as follows: utilize during the use Ultra-fast AMC ON-LINE16 cooperation PN2PURGE 14, TOC ON-LINE and IC ON-LINE15, shorten analytical instrument equipment's whole reaction time when can effectively improve sample acquisition data volume, and the right sampling chamber 8 inner wall of sampler 12 top is equipped with purger 13, can effectively avoid remaining the reliability that influences follow-up detection after the sample switches, shorten analytical instrument equipment's whole reaction time when improving sample acquisition data volume, and adopt sealed cabinet formula sample and analysis integral structure, avoid sample pollution to influence data detection's reliability, excellent in use effect.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.