Purging and purifying gas heating device for gas chamber of on-line gas analyzer

Abstract

The utility model belongs to the field of assembly equipment, and particularly relates to an online gas analyzer gas chamber purging purified gas heating device. Before the gas analyzer is used for analysis work, purging purification work of the gas analyzer can be carried out firstly, inert gas nitrogen is introduced from an inlet of the coil pipe, an automatic temperature control electric tracing band is turned on to heat the nitrogen in the coil pipe, and a needle valve float flowmeter is adjusted to control the flow of the nitrogen at the inlet of the coil pipe; after the gas chamber of the gas analyzer is purged and purified for a period of time, the purging, purifying and heating device of the gas analyzer is closed or removed, gas analysis work can be carried out, the use method is rapid and simple, the problem of slight pollution of the gas chamber of the online analyzer can be effectively solved, and the data accuracy of the gas analyzer is effectively ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic instrument detection, and in particular relates to a purge and purification gas heating device for a gas chamber of an online gas analyzer. Background Art

[0002] Online gas analyzers are widely used in the steel, chemical, and power industries for automated and continuous measurement of the composition or physical properties of the gaseous medium being measured. Gas samples entering online analyzers typically require a preconditioning system to ensure they are clean and non-corrosive. The purpose of this preconditioning system is to provide the online analyzer with a continuously updated, clean, representative sample gas at a temperature, pressure, and flow rate suitable for the analyzer's operating conditions. In industrial applications, sample gas dust levels, temperature, and humidity often fail to meet the operating requirements of online analyzers due to design flaws or inadequate maintenance and overhaul of the preconditioning system. Directly passing unqualified sample gas into the analyzer can contaminate the analyzer's gas chamber, distorting the overall measurement data. Currently, both domestic and international solutions rely on replacing the entire analyzer's gas chamber when contaminated. However, there is a lack of a purification and purge system to address the problem of contaminated analyzer chambers containing small amounts of moisture, dust, or volatile, non-corrosive organic compounds.

[0003] Therefore, a purge and purification gas heating device for the gas chamber of an online gas analyzer has been developed. It can purge and purify a small amount of dust, volatile non-corrosive organic matter adhering to the gas chamber of the online gas analyzer. After a simple purification of the gas analysis chamber, it can effectively solve the problem of mild contamination of the gas chamber of the online analyzer and ensure the authenticity of the data measurement. Utility Model Content

[0004] In response to the problems of the prior art, the purpose of the present invention is to provide an online gas analyzer gas chamber purging and purification gas heating device, which can simply purge and purify impurities in the gas chamber of the gas analyzer, so that the data obtained when the gas analyzer analyzes the gas is more accurate.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A purge and purification gas heating device for an online gas analyzer gas chamber comprises a coil, characterized in that a self-controlling temperature heating tape is spirally wound in opposite directions on the outer surface of the coil, and an online gas analyzer is connected to the outlet of the coil.

[0007] Preferably, the self-controlling temperature heating tape is provided with a thermal insulation layer, and the outer surface of the thermal insulation layer is provided with a shell.

[0008] Preferably, a needle valve float flowmeter is provided at the coil inlet.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The utility model is an online gas analyzer gas chamber purge purification gas heating device. The outer surface of the coil is spirally wound with a self-controlling temperature heating tape. When the gas analyzer is purging, inert gas nitrogen is introduced from the inlet of the coil. The self-controlling temperature heating tape can heat the nitrogen in the coil at a constant temperature. The self-controlling temperature heating tape is wound around the coil in a reverse spiral winding manner in order to increase the heating area of the gas in the coil, reduce the time of heating the nitrogen, and achieve better purging and purification effects.

[0011] 2. The utility model provides an online gas analyzer gas chamber purge purification gas heating device with a self-controlling temperature heating cable. An insulation layer is provided on the outer surface of the insulation layer. The purpose is to better insulate the gas in the coil after heating and prevent the temperature from being lost quickly in the natural environment.

[0012] 3. The utility model is an online gas analyzer gas chamber purge purification gas heating device. A needle valve float flowmeter is provided at the coil inlet, and the outlet of the coil is connected to the online gas analyzer. The needle valve float flowmeter is used to indicate and adjust the flow rate of nitrogen at the coil inlet, effectively controlling the purge and purification effect of impurities in the gas analyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a forklift of the present utility model.

[0014] The meanings of the reference numerals in the figure are: 1. Coil, 2. Self-controlling temperature heating tape, 3. Insulation layer, 4. Housing, 5. Needle valve float flowmeter. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0016] like Figure 1The utility model shown is an online gas analyzer gas chamber purge and purification gas heating device, including a coil, the outer surface of the coil 1 is spirally wound with a self-controlling temperature heating tape 2 in reverse, the reversely spirally wound self-controlling temperature heating tape 2 can heat the nitrogen in the coil 1 at a constant temperature, and at the same time increase the heating area of the gas in the coil 1, effectively reduce the time for heating the nitrogen, and achieve better purge and purification effect, the self-controlling temperature heating tape 2 is provided with a thermal insulation layer 3, and the outer surface of the thermal insulation layer 3 is provided with an outer shell 4, which can better insulate the gas in the coil after heating and prevent the temperature from losing quickly in the natural environment, a needle valve float flowmeter 5 is provided at the inlet of the coil 1, and the outlet of the coil 1 is connected to the online gas analyzer, when the gas analyzer is purging, inert gas nitrogen is introduced from the inlet of the coil 1, and the needle valve float flowmeter 5 at the inlet of the coil 1 indicates and adjusts the flow of nitrogen at the inlet of the coil 1, which can effectively control the purge and purification effect of impurities in the gas analyzer.

[0017] Before starting to use the gas analyzer for analysis, you can first perform a purge and purification of the gas analyzer. Inert gas nitrogen is introduced from the inlet of the coil 1. The self-regulating temperature electric heating tape 2 is turned on to heat the nitrogen in the coil 1. The needle valve float flowmeter 5 is adjusted to control the nitrogen flow at the inlet of the coil 1. After a period of time, the gas analyzer chamber is purged and purified. The purge and purification heating device of the gas analyzer is closed or removed, and gas analysis can be performed. The method of use is quick and simple, and can effectively solve the problem of mild contamination of the online analyzer chamber and effectively ensure the data accuracy of the gas analyzer.

[0018] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A purge and purification gas heating device for an online gas analyzer gas chamber, comprising a coil, characterized in that: The outer surface of the coil (1) is spirally wound with a self-controlling temperature heating tape (2) in a reverse direction, and the outlet of the coil (1) is connected to an online gas analyzer.

2. The on-line gas analyzer gas chamber purge and purification gas heating device according to claim 1, characterized in that: A thermal insulation layer (3) is provided on the self-controlling temperature heating tape (2), and an outer shell (4) is provided on the outer surface of the thermal insulation layer (3).

3. The on-line gas analyzer gas chamber purge and purification gas heating device according to claim 1, characterized in that: A needle valve float flowmeter (5) is provided at the inlet of the coil (1).

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