CN217521115U - Online analysis device capable of detecting gas content - Google Patents
Online analysis device capable of detecting gas content Download PDFInfo
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- CN217521115U CN217521115U CN202221463306.7U CN202221463306U CN217521115U CN 217521115 U CN217521115 U CN 217521115U CN 202221463306 U CN202221463306 U CN 202221463306U CN 217521115 U CN217521115 U CN 217521115U
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Abstract
The utility model discloses an online analytical equipment of detectable gas content is connected with the gas pipeline through adjusting the flow valve, include: the device comprises a first discharge port, a three-way electromagnetic valve, a three-way valve, a two-way electromagnetic valve, an air pump, a sensor, a second discharge port, a control module and a display module. The first end of the three-way valve is connected with the flow regulating valve through a three-way electromagnetic valve, and the three-way electromagnetic valve is also connected with a first discharge port; the second end of the three-way valve is connected with the outside air through the two-way electromagnetic valve and the air pump in sequence; the third end of the three-way valve is sequentially connected with a sensor, a control module and a display module, and the sensor is also connected with a second discharge port. The switching of the detection of the detectable gas and the air entering the sample is realized through the control module, the concentration of the detectable gas is detected on line for a long time, and the sensitivity of gas detection is improved.
Description
Technical Field
The utility model relates to a gaseous detection and analysis technical field, concretely relates to online analytical equipment of detectable gas content.
Background
In recent years, with the governance of the national comprehensive enhancement of ecological environment protection, the usage amount of natural gas as high-efficiency clean energy is increasing day by day, and the gas purchase amount of the natural gas of Beijing fuel gas is about 170 billion cubic meters in recent years. In order to ensure the safety of people using natural gas, a gas alarm agent with odor is very necessary to be added into the gas. At present, odorizing agents used by domestic gas enterprises mainly comprise tetrahydrothiophene, ethanethiol, sulfur-free odorizing agents and the like. Among the many odorant types, the tetrahydrothiophene odor is considered to be the closest to that of the gas being odorized. It is chemically very stable and is the most stable compound among many odorizing agents. The duration of the scent is also relatively long due to its chemical stability. Under the condition of low temperature or high pressure, the tetrahydrothiophene can not leak, and meanwhile, the gas can not be flushed by water or other liquid, residues can not appear after combustion, the pollution to the environment is very small, meanwhile, a small amount of gas is added into natural gas to generate a very obvious effect, and the influence on a gas pipeline and gas equipment is small when the gas is used. Therefore, tetrahydrothiophene is the most widely used odorant for gas enterprises and is also the type of odorant used by many gas companies.
At present, the tetrahydrothiophene is mainly detected off-line regularly by adopting handheld equipment, and no on-line equipment is used for detection. Although the amount of added tetrahydrothiophene can also be detected, it is not detected on-line in real time, but is generally detected once a day or more. If the content of added tetrahydrothiophene is not sufficient, the possible consequences are: once a leak occurs, it is simply imperceptible, with serious consequences. There is a drawback that gas detection is not sensitive.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a pair of online analytical equipment of detectable gas content has overcome the insensitive defect of gas detection among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
in a first aspect, an embodiment of the utility model provides an online analytical equipment of detectable gas content is connected with the gas pipeline through adjusting the flow valve, include: a first discharge port, a three-way electromagnetic valve, a three-way valve, a two-way electromagnetic valve, an air pump, a sensor, a second discharge port, a control module and a display module, wherein,
the first end of the three-way valve is connected with the flow regulating valve through a three-way electromagnetic valve, wherein the three-way electromagnetic valve is also connected with a first discharge port;
the second end of the three-way valve is connected with the outside air through the two-way electromagnetic valve and the air pump in sequence;
the third end of the three-way valve is sequentially connected with a sensor, a control module and a display module, wherein the sensor is also connected with a second discharge port.
Optionally, the detectable gas is tetrahydrothiophene.
Optionally, the sensor is an electrochemical gas sensor.
Optionally, the online analysis device capable of detecting the gas content further includes: pressure sensor, temperature sensor.
Optionally, the display module is a liquid crystal display screen.
Optionally, the online analysis device capable of detecting the gas content further includes: and the alarm module is used for giving an alarm when the detected gas meets the preset condition.
The utility model discloses technical scheme has following advantage:
the utility model provides an online analytical equipment of detectable gas content is through adjusting the flow valve and being connected with the gas pipeline, include: the device comprises a first discharge port, a three-way electromagnetic valve, a three-way valve, a two-way electromagnetic valve, an air pump, a sensor, a second discharge port, a control module and a display module. The first end of the three-way valve is connected with the flow regulating valve through a three-way electromagnetic valve, and the three-way electromagnetic valve is also connected with a first discharge port; the second end of the three-way valve is connected with the outside air through the two-way electromagnetic valve and the air pump in sequence; the third end of the three-way valve is sequentially connected with a sensor, a control module and a display module, and the sensor is also connected with a second discharge port. The switching of the detection of the detectable gas and the air entering the sample is realized through the control module, the online long-term detection of the concentration of the tetrahydrothiophene is realized, and the sensitivity of gas detection is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit connection diagram of a specific example of an online analysis device capable of detecting gas content according to an embodiment of the present invention;
fig. 2 is a circuit connection diagram of another specific example of an online analysis device capable of detecting gas content according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Examples
The embodiment of the utility model provides a pair of detectable gas content's online analysis device is applied to the apparatus for producing district of each trade such as oil, petrochemical industry, natural gas, only with this example, does not use this as the limit, according to the gaseous condition of actual detection, arranges the device in different scenes.
As shown in fig. 1, includes: the device comprises a first discharge port, a three-way electromagnetic valve, a three-way valve, a two-way electromagnetic valve, an air pump, a sensor, a second discharge port, a control module and a display module.
The embodiment of the utility model provides an in, the first end of three-way valve is passed through three solenoid valve and is connected with the flow regulating valve, and wherein, three solenoid valve still connects first discharge port. The closing of the three-way valve is controlled by a control module, and a control program in the control module is a mature program in the prior art. The first exhaust port is used for preventing dangerous conditions such as explosion caused by overlarge pressure in the three-way electromagnetic valve.
And the second end of the three-way valve is connected with the outside air through the two-way electromagnetic valve and the air pump in sequence. Through an intermittent online detection mode, after detecting tetrahydrothiophene for a period of time, air cleaning is carried out by switching, so that the service life of the sensor can be prolonged.
The third end of the three-way valve is sequentially connected with a sensor, a control module and a display module, wherein the sensor is also connected with a second discharge port. The first exhaust port is used for preventing explosion caused by excessive pressure in the analysis device, exhaust gas emission and the like.
The embodiment of the utility model provides an in, the closure of three-port valve three-terminal is controlled through control module, and control procedure among the control module is ripe procedure among the prior art.
In the embodiment of the present invention, the detectable gas is tetrahydrothiophene, which is only used as an example, but not limited thereto, and the corresponding detectable gas is selected according to actual situations in practical applications.
In the embodiment of the present invention, the sensor is an electrochemical gas sensor, and the service life of the electrochemical sensor can be prolonged by combining the intermittent sampling with the electrochemical sensor. Because the service life of the electrochemical sensor is influenced by the concentration and time of aeration, the chemical reaction is in the electrochemical sensor, if more tetrahydrothiophene gas is aerated, the tetrahydrothiophene gas is consumed more, and the service life is naturally shortened, so that the intermittent sampling is adopted to be combined with the electrochemical sensor. Meanwhile, the electrochemical gas sensor as a core detector has the characteristics of small size, low price, high precision and the like, and is convenient to install in a large quantity. In order to realize online detection, the online detection capability is improved by modifying the working mode, so that the detection is sensitive and the device works normally. The electrochemical gas sensor is adopted to carry out on-line monitoring on the tetrahydrothiophene, and the sensor is purged through the air pump through switching of the built-in three-way electromagnetic valve, the three-way valve and the two-way electromagnetic valve, so that the dynamic adjustment of the zero point is realized.
The embodiment of the utility model provides an in, detectable gas content's online analytical equipment still includes: pressure sensor, temperature sensor. For detecting the pressure of the gas in the device. A built-in temperature sensor is designed, so that the temperature compensation of the tetrahydrothiophene sensor is realized, and the use precision of the sensor is increased.
The embodiment of the utility model provides an in, the display module is liquid crystal display.
The embodiment of the utility model provides an in, detectable gas content's online analytical equipment still includes: and the alarm module is used for giving an alarm when the detected gas meets the preset condition.
Fig. 2 is a circuit diagram according to another embodiment of the present invention. The switching of gas and air inlet sample detection is realized through circuit control, and the online long-term detection of the concentration of the tetrahydrothiophene is realized. The problem of insensitivity of the tetrahydrothiophene sensor in long-term monitoring is solved by a dynamic purging mode, and the service life of the sensor is prolonged.
The embodiment of the utility model provides an in the online analytical equipment of detectable gas content who provides, through adjusting the flow valve and being connected with the gas pipeline, include: the device comprises a first discharge port, a three-way electromagnetic valve, a three-way valve, a two-way electromagnetic valve, an air pump, a sensor, a second discharge port, a control module and a display module. The first end of the three-way valve is connected with the flow regulating valve through a three-way electromagnetic valve, and the three-way electromagnetic valve is also connected with a first discharge port; the second end of the three-way valve is connected with the outside air through the two-way electromagnetic valve and the air pump in sequence; the third end of the three-way valve is sequentially connected with a sensor, a control module and a display module, and the sensor is also connected with a second discharge port. The switching of the detection of the detectable gas and the air entering the sample is realized through the control module, the online long-term detection of the concentration of the tetrahydrothiophene is realized, and the sensitivity of gas detection is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (6)
1. The utility model provides an online analytical equipment of detectable gas content, is connected with the gas pipeline through adjusting the flow valve, its characterized in that includes: a first discharge port, a three-way electromagnetic valve, a three-way valve, a two-way electromagnetic valve, an air pump, a sensor, a second discharge port, a control module and a display module, wherein,
the first end of the three-way valve is connected with the flow regulating valve through a three-way electromagnetic valve, wherein the three-way electromagnetic valve is also connected with a first discharge port;
the second end of the three-way valve is connected with the outside air through the two-way electromagnetic valve and the air pump in sequence;
the third end of the three-way valve is sequentially connected with a sensor, a control module and a display module, wherein the sensor is also connected with a second discharge port.
2. The on-line assay device for the content of a detectable gas according to claim 1, wherein the detectable gas is tetrahydrothiophene.
3. The on-line assay device of claim 1, wherein the sensor is an electrochemical gas sensor.
4. The on-line detectable gas content analysis device according to claim 3, further comprising: pressure sensor, temperature sensor.
5. The on-line analysis device for detectable gas content according to claim 1, wherein the display module is a liquid crystal display.
6. The on-line detectable gas content analysis device according to claim 1, further comprising: and the alarm module is used for giving an alarm when the detected gas meets the preset condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221463306.7U CN217521115U (en) | 2022-06-13 | 2022-06-13 | Online analysis device capable of detecting gas content |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221463306.7U CN217521115U (en) | 2022-06-13 | 2022-06-13 | Online analysis device capable of detecting gas content |
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| CN217521115U true CN217521115U (en) | 2022-09-30 |
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| CN202221463306.7U Active CN217521115U (en) | 2022-06-13 | 2022-06-13 | Online analysis device capable of detecting gas content |
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- 2022-06-13 CN CN202221463306.7U patent/CN217521115U/en active Active
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