CN215768226U

CN215768226U - Liquid stored gas anti-pollution trace oxygen analyzer

Info

Publication number: CN215768226U
Application number: CN202121580809.8U
Authority: CN
Inventors: 郭文江
Original assignee: Hancheng Yingda Gas Co ltd
Current assignee: Hancheng Yingda Gas Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-08
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a pollution-prevention trace oxygen analyzer for liquid stored gas, which comprises a gas storage tank, an infrared gas analyzer, a detection tube, a photoelectric alarm and a gas oxygen sensor, wherein a gas inlet pipe and a gas outlet pipe are arranged at the top end of the gas storage tank, the gas storage tank is communicated with the detection tube through the gas outlet pipe and a guide pipe, the infrared gas analyzer is arranged on two sides of the detection tube, the photoelectric alarm is arranged at the top end of the detection tube, a supporting block and the gas oxygen sensor are arranged at the bottom end of the detection tube, and the gas oxygen sensor is electrically connected with the photoelectric alarm and an external PLC through a lead. The utility model has the advantages of accurately detecting the purity change of the gas and conveniently adjusting the gas purity.

Description

Liquid stored gas anti-pollution trace oxygen analyzer

Technical Field

The utility model relates to the technical field of industrial gas detection, in particular to a trace oxygen analyzer for preventing pollution of liquid stored gas.

Background

The problem of adjusting the purity of industrial gases, nitrogen and argon, is a fundamental and frequently-speaking problem in the production process of air separation plants, and the purity index is one of indexes which need to be monitored, adjusted and guaranteed in real time in the production process. The analysis of trace impurities existing in high-purity gas is always a difficult problem in the field of gas analysis, foreign companies and enterprises mostly adopt high-frequency argon discharge particle gas chromatography to detect impurities in argon gas, the instrument can analyze various impurities at one time, the analysis effect is good, but the instrument is high in price. In the national standard of China, a helium ion detector gas phase method is adopted to analyze trace oxygen of helium in the electronic industry, Sun comel duckweed measures trace impurities such as nitrogen and hydrogen in high-purity argon by a traditional 592 type discharge detector gas chromatograph, and Hupass nations and the like detect trace inorganic impurities in high-purity gas by a pulse discharge ionization chromatography, but the accuracy of impurity analysis is influenced because the main component of the gas contains a tailing peak. Aiming at the storage system of industrial gas liquid nitrogen and liquid argon, how to effectively, rapidly and accurately detect the purity change becomes a technical problem of key research of enterprises.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a trace oxygen analyzer for preventing pollution of liquid stored gas, which has the advantages of being capable of accurately detecting the purity change of the gas and being convenient for adjusting the gas purity, and solves the problem that the accuracy of impurity analysis is influenced because the main component of the gas contains a tailing peak.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a gaseous anti-pollution micro oxygen analysis appearance of using of liquid storage, includes gaseous storage jar, infrared gas analysis appearance, detecting tube, photoelectric alarm and gaseous oxygen sensor, the top of gaseous storage jar is equipped with intake pipe and outlet duct, gaseous storage jar passes through outlet duct and pipe and detecting tube intercommunication, infrared gas analysis appearance is installed to the both sides of detecting tube, photoelectric alarm is installed on the top of detecting tube, supporting shoe and gaseous oxygen sensor are installed to the bottom of detecting tube, gaseous oxygen sensor passes through wire and photoelectric alarm and outside PLC electric connection.

Preferably, the bottom surface of gas storage jar is equipped with the bearing frame, the bearing frame distributes at the bottom of gas storage jar annular array.

Preferably, the rectangular arrays of support blocks are distributed at four corners of the bottom surface of the detection tube, and the gas oxygen sensor is located at the center of the bottom surface of the detection tube.

Preferably, the both sides skin weld of test tube has the second connecting pipe, the test tube is connected with the second ring flange through the second connecting pipe, the welding has first connecting pipe on the infrared gas analysis appearance, infrared gas analysis appearance is connected with first ring flange through first connecting pipe, infrared gas analysis appearance is connected fixedly with the test tube through first ring flange and second ring flange, just the inside intercommunication of infrared gas analysis appearance and test tube.

Preferably, a base is arranged below the photoelectric alarm, a connecting seat is arranged at the bottom end of the base, and the photoelectric alarm is fixedly connected with the detection tube through the connecting seat and a bolt.

Preferably, the gas storage jar passes through intake pipe and air supply intercommunication, the one end and the gas circuit intercommunication that the test tube deviates from the gas storage jar.

Compared with the prior art, the utility model has the beneficial effects that: through setting up the gas storage jar, when using, the gas in the gas circuit cushions through the gas storage jar, later gas passes through the outlet duct and gets into in the detecting tube, infrared gas analyzer analysis gas composition through the detecting tube both sides, and gas passes through the gas oxygen sensor monitoring oxygen content of detecting tube bottom, oxygen molecule permeates into the gas oxygen sensor through the osmotic membrane, gas oxygen sensor negative pole and positive pole gain or lose electron, form closed loop, wherein the electric current in the closed loop changes along with oxygen concentration size, can monitor and record the change of electric current in signal processing circuit, and pass to the display module with the electric current information on the one hand, demonstrate the oxygen molecule concentration numerical value, on the other hand pass through the circuit with the electric current signal and transmit to the photoelectric alarm in, after oxygen molecule content increases to the settlement scope, can start reputation early warning device at once, inform the staff to adopt anti-pollution measure, the purity of the liquid storage gas is improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic front view of a gas detecting tube according to the present invention.

In the figure: 1. a bearing seat; 2. a gas storage tank; 3. an air inlet pipe; 4. an air outlet pipe; 5. a first flange plate; 6. a first connecting pipe; 7. an infrared gas analyzer; 8. a detection tube; 9. a photoelectric alarm; 10. a second connecting pipe; 11. a second flange plate; 12. a support block; 13. a base; 14. a connecting seat; 15. a gas oxygen sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to fig. 2, an embodiment of the present invention includes:

a trace oxygen analyzer for preventing pollution of liquid stored gas comprises a gas storage tank 2, an infrared gas analyzer 7, a detection tube 8, a photoelectric alarm 9 and a gas oxygen sensor 15, a bearing seat 1 is arranged on the bottom end surface of the gas storage tank 2, the bearing seat 1 is distributed at the bottom of the gas storage tank 2 in an annular array manner, an air inlet pipe 3 and an air outlet pipe 4 are arranged at the top end of the gas storage tank 2, the gas storage tank 2 is communicated with a gas source through the air inlet pipe 3, one end, away from the gas storage tank 2, of the detection tube 8 is communicated with a gas circuit, gas in the gas circuit is buffered through the gas storage tank 2, then the gas enters the detection tube 8 through the air outlet pipe 4, the gas storage tank 2 is communicated with the detection tube 8 through the air outlet pipe 4 and a guide pipe, second connecting pipes 10 are welded on the surfaces of the two sides of the detection tube 8, the detection tube 8 is connected with a second flange 11 through the second connecting pipes 10, a first connecting pipe 6 is welded on the infrared gas analyzer 7.

The infrared gas analyzer 7 is connected with a first flange plate 5 through a first connecting pipe 6, the infrared gas analyzer 7 is fixedly connected with a detection pipe 8 through the first flange plate 5 and a second flange plate 11, the infrared gas analyzer 7 is communicated with the inside of the detection pipe 8, the infrared gas analyzer 7 is arranged on two sides of the detection pipe 8, a photoelectric alarm 9 is arranged on the top end of the detection pipe 8, a base 13 is arranged below the photoelectric alarm 9, a connecting seat 14 is arranged at the bottom end of the base 13, the photoelectric alarm 9 is fixedly connected with the detection pipe 8 through the connecting seat 14 and a bolt, a supporting block 12 and a gas oxygen sensor 15 are arranged at the bottom end of the detection pipe 8, the gas components are analyzed through the infrared gas analyzers 7 on two sides of the detection pipe 8, the gas monitors the oxygen content through the gas oxygen sensor 15 at the bottom end of the detection pipe 8, and oxygen molecules permeate into the gas oxygen sensor 15 through a permeable membrane, the cathode and the anode of the gas oxygen sensor 15 are subjected to electron gain and loss to form a closed loop, wherein the current in the closed loop changes along with the oxygen concentration, the change of the current can be monitored and recorded in a signal processing circuit, current information is transmitted to a display assembly on the one hand to show the oxygen molecule concentration value, on the other hand, the current signal is transmitted to the photoelectric alarm 9 through the circuit, when the oxygen molecule content is increased to a set range, an acousto-optic early warning device can be started immediately to inform workers of adopting anti-pollution measures, the purity of liquid storage gas is improved, the supporting blocks 12 are distributed at four corners of the bottom surface of the detection tube 8 in a rectangular array mode, the gas oxygen sensor 15 is located at the center of the bottom surface of the detection tube 8, and the gas oxygen sensor 15 is electrically connected with the photoelectric alarm 9 and an external PLC through a lead.

The working principle is as follows: the gas in the gas circuit is buffered through a gas storage tank 2, then the gas enters a detection tube 8 through a gas outlet tube 4, the gas components are analyzed through an infrared gas analyzer 7 at two sides of the detection tube 8, the gas monitors the oxygen content through a gas oxygen sensor 15 at the bottom end of the detection tube 8, oxygen molecules permeate into the gas oxygen sensor 15 through a permeable membrane, the cathode and the anode of the gas oxygen sensor 15 are subjected to electron loss to form a closed loop, wherein the current in the closed loop changes along with the oxygen concentration, the change of the current can be monitored and recorded in a signal processing circuit, current information is transmitted to a display assembly on one hand to show the oxygen molecule concentration value, on the other hand, the current signal is transmitted to a photoelectric alarm 9 through the circuit, when the oxygen molecule content is increased to a set range, an acousto-optic early warning device can be started immediately to inform a worker of adopting anti-pollution measures, the purity of the liquid storage gas is improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a gaseous anti-pollution trace oxygen analysis appearance of using of liquid storage, includes gaseous storage jar (2), infrared gas analysis appearance (7), detecting tube (8), photoelectric alarm (9) and gaseous oxygen sensor (15), its characterized in that: the top of gas storage jar (2) is equipped with intake pipe (3) and outlet duct (4), gas storage jar (2) is through outlet duct (4) and pipe and detecting tube (8) intercommunication, infrared gas analysis appearance (7) are installed to the both sides of detecting tube (8), photoelectric alarm (9) are installed on the top of detecting tube (8), supporting shoe (12) and gaseous oxygen sensor (15) are installed to the bottom of detecting tube (8), gaseous oxygen sensor (15) pass through wire and photoelectric alarm (9) and outside PLC electric connection.

2. The trace oxygen analyzer for contamination prevention of liquid stored gas according to claim 1, wherein: the bottom surface of gas storage jar (2) is equipped with bearing frame (1), bearing frame (1) distributes at the bottom annular array of gas storage jar (2).

3. The trace oxygen analyzer for contamination prevention of liquid stored gas according to claim 1, wherein: the support blocks (12) are distributed at four corners of the bottom surface of the detection tube (8) in a rectangular array, and the gas oxygen sensor (15) is positioned at the center of the bottom surface of the detection tube (8).

4. The trace oxygen analyzer for contamination prevention of liquid stored gas according to claim 1, wherein: the both sides skin weld of test tube (8) has second connecting pipe (10), test tube (8) are connected with second ring flange (11) through second connecting pipe (10), the welding has first connecting pipe (6) on infrared gas analysis appearance (7), infrared gas analysis appearance (7) are connected with first ring flange (5) through first connecting pipe (6), infrared gas analysis appearance (7) are connected fixedly with test tube (8) through first ring flange (5) and second ring flange (11), just infrared gas analysis appearance (7) and the inside intercommunication of test tube (8).

5. The trace oxygen analyzer for contamination prevention of liquid stored gas according to claim 1, wherein: the photoelectric alarm is characterized in that a base (13) is arranged below the photoelectric alarm (9), a connecting seat (14) is arranged at the bottom end of the base (13), and the photoelectric alarm (9) is fixedly connected with the detection tube (8) through the connecting seat (14) and a bolt.

6. The trace oxygen analyzer for contamination prevention of liquid stored gas according to claim 1, wherein: gas storage jar (2) are through intake pipe (3) and air supply intercommunication, the one end and the gas circuit intercommunication that check tube (8) deviate from gas storage jar (2).