CN-122016415-A - High-temperature high-pressure gas continuous sampling device and method containing water vapor

Abstract

A high-temperature high-pressure gas continuous sampling device and a method containing water vapor belong to the field of pipeline engineering. The device includes collection pipeline, sampling bottle array, heat tracing heat preservation device and belt cleaning device, and wherein the collection pipeline is including being connected to the main pipeline of sampling air supply and being connected to the sampling branch road of every sampling bottle, and heat tracing heat preservation device cladding collection pipeline and the surface of sampling bottle array and provide the heating to collection pipeline and sampling bottle array, belt cleaning device communicates to collection pipeline and is used for wasing the collection pipeline. The device can prevent component deviation caused by water vapor condensation in the high-temperature high-pressure gas sampling process, and effectively improves the sampling accuracy.

Inventors

• TANG KE
• YANG ZIJIANG
• LU HAOTIAN
• WU YUE
• LI RUI
• WU YANHUA
• QI ZHANFEI
• CAO KEMEI

Assignees

• 上海核工程研究设计院股份有限公司

Dates

Publication Date

20260512

Application Date

20260226

Claims (10)

1. 1. A high-temperature high-pressure gas continuous sampling device containing water vapor is characterized by comprising The device comprises a collecting pipeline, a sampling bottle array, a heat tracing and preserving device and a cleaning device, wherein, The sampling pipeline comprises a main pipeline and a plurality of sampling branches, one end of the main pipeline is connected with a sampling air source, the other end of the main pipeline is set to be an exhaust end, the sampling bottle array comprises a plurality of sampling bottles, and each sampling branch is respectively connected to one sampling bottle; the heat tracing and insulating device is coated on the surfaces of the acquisition pipeline and the sampling bottle array and heats the acquisition pipeline and the sampling bottle array; The cleaning device is communicated to the collecting pipeline and used for cleaning the collecting pipeline.
2. 2. The continuous sampling device for high temperature and high pressure gas containing water vapor according to claim 1, wherein each sampling branch is provided with a sampling valve.
3. 3. The continuous sampling device for high temperature and high pressure gas containing water vapor according to claim 2, further comprising a sampling controller which controls the opening and closing of each of the sampling valves and performs sampling in a predetermined sequence.
4. 4. The continuous sampling device for high-temperature and high-pressure gas containing water vapor according to claim 1, 2 or 3, wherein the heat tracing and heat preserving device comprises a heating belt and a heat preserving layer, the heating belt is wound on the surfaces of the collecting pipeline and the sampling bottle, and the heat preserving layer is coated on the surface of the sampling bottle.
5. 5. The continuous sampling device for high temperature and high pressure gas containing water vapor according to claim 4, wherein the heating belt wound around the collecting pipe is a first heating belt, the heating belt wound around the sampling bottle is a second heating belt, and the second heating belt is detachably connected to the first heating belt.
6. 6. A continuous sampling device for high temperature and pressure gases containing water vapour according to claim 1, 2 or 3 wherein the cleaning means comprises a purge means connected to the main conduit at a location upstream of the sampling branch and a suction pump connected to the main conduit at a location downstream of the purge means.
7. 7. A high temperature, high pressure, gas continuous sampling apparatus for aqueous vapor according to claim 1, 2 or 3, further comprising a containment vessel configured as a pressure-bearing structure and enclosing the connection location of the main conduit to the sampling gas source.
8. 8. A method for continuously sampling high-temperature and high-pressure gas containing water vapor, characterized by sampling the high-temperature and high-pressure gas containing water vapor according to any one of claims 1 to 7, and comprising the steps of: step a), connecting the acquisition pipeline to a sampling air source, wherein the sampling air source is a high-temperature high-pressure pipeline or an air tank, starting the heat tracing and heat preserving device, and heating the acquisition pipeline and the sampling bottle to the same temperature as the sampling air source; B), enabling the gas to be sampled to flow into the collecting pipeline and be discharged from the exhaust end until the temperature and the pressure of the collecting pipeline are stable; And c) inputting the gas to be sampled into the sampling bottle according to a preset sequence, and sealing the sampling bottle.
9. 9. The continuous sampling method for high temperature and high pressure gas containing water vapor according to claim 8, wherein each sampling branch is provided with a sampling valve, and in the step c), the opening and closing of each sampling valve are controlled sequentially according to a preset time sequence to complete the sampling.
10. 10. The method for continuously sampling high-temperature and high-pressure gas containing water vapor according to claim 8 or 9, further comprising a step d) of cleaning the collection line by the cleaning device after the step c).

Description

High-temperature high-pressure gas continuous sampling device and method containing water vapor Technical Field The invention belongs to the field of pipeline engineering, and particularly relates to a high-temperature high-pressure gas continuous sampling device and method containing water vapor. Background In the fields of nuclear engineering, petroleum engineering and chemical engineering, sampling analysis is often required for gas in a container or a pipeline under high temperature and high pressure. Taking nuclear power facilities as an example, the sampled gas contains high-temperature and high-pressure water vapor and various non-condensable gases, such as hydrogen, nitrogen and the like, and the accurate measurement of the components of the mixed gas is of great significance for evaluating condensation heat exchange efficiency, system resistance characteristics, hydrogen distribution behavior and reactor safety margin. At present, conventional sampling technology generally refers to environmental protection continuous emission monitoring systems or industrial process gas sampling systems, the systems are usually designed aiming at normal pressure or low pressure flue gas environments, gas components are analyzed in an on-line detection mode, and in the sampling process, due to the fact that the pressure and the temperature of gas are reduced, water vapor in the gas components is easily condensed, problems of detection result errors, pipeline blockage, sample pollution caused by residual gas or liquid in sampling pipelines are caused, manual operation is highly relied, and safety is limited. Therefore, the high-temperature high-pressure gas continuous sampling device for the water vapor has positive significance for improving the accuracy of gas component detection. Disclosure of Invention The invention aims to provide a high-temperature high-pressure gas continuous sampling device and method for water vapor, which can improve the accuracy of high-temperature high-pressure gas component detection. The invention also provides a high-temperature high-pressure gas continuous sampling method for the water vapor. According to the embodiment of one aspect of the invention, a high-temperature and high-pressure gas continuous sampling device containing water vapor is provided, the device comprises a collecting pipeline, a sampling bottle array, a heat tracing heat preservation device and a cleaning device, wherein the collecting pipeline comprises a main pipeline and a plurality of sampling branches, one end of the main pipeline is connected with a sampling gas source, the other end of the main pipeline is provided with an exhaust end, the sampling bottle array comprises a plurality of sampling bottles, each sampling branch is respectively connected to one sampling bottle, the heat tracing heat preservation device is coated on the surfaces of the collecting pipeline and the sampling bottle array and is used for heating the collecting pipeline and the sampling bottle array, and the cleaning device is communicated to the collecting pipeline and is used for cleaning the collecting pipeline. The device ensures that the temperature of the sample gas is kept stable in the sampling process by arranging the heat tracing heat preservation device, prevents the sample gas from liquefying water vapor due to temperature reduction before entering the sampling bottle, causes component deviation and improves the accuracy of sampling. Through setting up belt cleaning device, can effectively get rid of the pollution composition that remains in the pipeline, ensure sampling accuracy. Further, in some embodiments, each of the sampling branches is provided with a sampling valve. Further, in some embodiments, the apparatus further includes a sampling controller, where the sampling controller controls opening and closing of each sampling valve, and samples in a preset sequence. Further, in some embodiments, the heat tracing thermal insulation device includes a heating belt and a thermal insulation layer, the heating belt is wound on the surface of the collection pipeline and the surface of the sampling bottle, and the thermal insulation layer is coated on the surface of the sampling bottle. Further, in some embodiments, the heating belt wound around the collection tube is a first heating belt, the heating belt wound around the sampling bottle is a second heating belt, and the second heating belt is detachably connected to the first heating belt. Further, in some embodiments, the cleaning device includes a purge device connected to the main conduit at a location upstream of the sampling branch, and a suction pump connected to the main conduit at a location downstream of the purge device. Further, in some embodiments, the apparatus further comprises a containment vessel configured as a pressure-bearing structure and enclosing a connection location of the main conduit and the sampling gas source. According to an embodiment of anothe