KR-102961828-B1 - SYSTEM AND METHOD FOR EVALUATING THE PERFORMANCE OF PIPE

KR102961828B1KR 102961828 B1KR102961828 B1KR 102961828B1KR-102961828-B1

Abstract

An embodiment of the present invention discloses a system and a method for evaluating the performance of a pipeline supplied with cryogenic liquefied gases, such as liquid hydrogen, liquid helium, and liquid nitrogen.

Inventors

오정석
조충희
강승규
황봄찬
김대성
차건종

Assignees

한국가스안전공사

Dates

Publication Date: 20260507
Application Date: 20221226

Claims (16)

As a pipe performance measurement system for measuring the performance of a pipe supplied with cryogenic liquefied gas, At least one storage tank containing liquefied gas in a cryogenic state; A test chamber including a supply pipe through which the liquefied gas is supplied within the storage tank; A measuring unit for measuring the evaporation rate of the liquefied gas in the supply pipe; and It includes a plurality of heaters arranged around the supply pipe, spaced apart from the supply pipe at a predetermined distance, and The heating temperatures of the first heater and the second heater among the plurality of heaters are different, and The above measuring unit is, A first measuring unit for measuring the liquefied gas evaporation rate of the supply pipe adjacent to the first heater; and It includes a second measuring unit for measuring the evaporation rate of the liquefied gas in the supply pipe adjacent to the second heater, and Measuring the difference in the liquefied gas evaporation rate within the supply pipe measured by each of the first measuring unit and the second measuring unit, Piping performance measurement system.
In paragraph 1, Initial information regarding the temperature and pressure of the liquefied gas supplied through the above supply pipe is stored, and The above measuring unit is, Measuring the evaporation rate of the liquefied gas evaporated in the supply pipe by matching the discharge information regarding the temperature and pressure of the liquefied gas discharged from the supply pipe with the initial information. Piping performance measurement system.
In paragraph 1, Evaporated gas is generated due to the temperature difference between the liquefied gas supplied through the supply pipe and the inside of the supply pipe, and A collection tank further comprising a collection tank for collecting generated evaporative gas, Piping performance measurement system.
In paragraph 1, A vent part further comprising for discharging the evaporated gas generated by the temperature difference between the liquefied gas supplied through the supply pipe and the supply pipe inside the test chamber, Piping performance measurement system.
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In paragraph 1, The above measuring unit is, Measuring the evaporation rate of the liquefied gas in the supply pipe for the operation of the first heater, Piping performance measurement system.
In paragraph 1, The above measuring unit is, Measuring the evaporation rate of the liquefied gas in the supply pipe for the simultaneous operation of the plurality of heaters mentioned above, Piping performance measurement system.
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As a method for measuring the performance of a pipeline supplied with cryogenic liquefied gas, A step of supplying the liquefied gas from at least one storage tank containing the liquefied gas in a cryogenic state to a supply pipe supplying the liquefied gas within a test chamber; A step of heating the supply pipe through a plurality of heaters arranged around the supply pipe and spaced apart from the supply pipe by a predetermined distance; and The method includes the step of measuring the evaporation rate of the liquefied gas evaporated in the supply pipe by matching discharge information regarding the temperature and pressure of the liquefied gas discharged from the supply pipe with initial information regarding the temperature and pressure of the liquefied gas supplied to the supply pipe. The heating temperatures of the first heater and the second heater among the plurality of heaters are different, and The step of measuring the evaporation rate of the above-mentioned liquefied gas is, A step of measuring the liquefied gas evaporation rate of the supply pipe adjacent to the first heater; A step of measuring the evaporation rate of the liquefied gas in the supply pipe adjacent to the second heater; and A method comprising the step of measuring the difference between the liquefied gas evaporation rate of the supply pipe adjacent to the first heater and the liquefied gas evaporation rate of the supply pipe adjacent to the second heater. Piping performance measurement method.
In Paragraph 9, A method further comprising the step of collecting evaporated gas generated by the temperature difference between the liquefied gas supplied through the supply pipe and the supply pipe. Piping performance measurement method.
In Paragraph 9, A method further comprising the step of discharging evaporated gas generated by the temperature difference between the liquefied gas supplied through the supply pipe and the supply pipe from the test chamber. Piping performance measurement method.
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In Paragraph 9, The step of measuring the evaporation rate of the above-mentioned liquefied gas is, A step comprising measuring the evaporation rate of the liquefied gas in the supply pipe for the operation of the first heater, Piping performance measurement method.
In Paragraph 9, The step of measuring the evaporation rate of the above-mentioned liquefied gas is, A step comprising measuring the evaporation rate of the liquefied gas in the supply pipe for the simultaneous operation of the plurality of heaters. Piping performance measurement method.
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As a pipe performance measurement system for measuring the performance of a pipe supplied with cryogenic liquefied gas, processor; and It includes a memory electrically connected to the processor and storing at least one code executed in the processor, When the above memory is executed through the above processor, the processor, Storing codes for performing the measurement of the evaporation rate of the liquefied gas evaporated from the supply pipe by matching discharge information regarding the temperature and pressure of the liquefied gas discharged from the supply pipe with respect to initial information regarding the temperature and pressure of the liquefied gas supplied from at least one storage tank containing the liquefied gas in a cryogenic state to the supply pipe supplying the liquefied gas within the test chamber, and The above supply pipe is heated through a plurality of heaters spaced apart from the above supply pipe at a predetermined distance, and The heating temperatures of the first heater and the second heater among the plurality of heaters are different, and Measuring the evaporation rate of the above liquefied gas is, A method comprising measuring the liquefied gas evaporation rate of the supply pipe adjacent to the first heater, measuring the liquefied gas evaporation rate of the supply pipe adjacent to the second heater, and measuring the difference between the liquefied gas evaporation rate of the supply pipe adjacent to the first heater and the liquefied gas evaporation rate of the supply pipe adjacent to the second heater. Piping performance measurement system.

Description

System and Method for Evaluating the Performance of Pipe The present invention relates to a system and method for evaluating the performance of a pipeline supplied with cryogenic liquefied gases, such as liquid hydrogen, liquid helium, and liquid nitrogen. The contents described below are provided solely for the purpose of providing background information related to embodiments of the present invention, and the contents described do not automatically constitute prior art. In general, cryogenic liquefied gases (e.g., hydrogen, helium, nitrogen, etc.) can easily vaporize with a small amount of heat due to their low temperature and small latent heat. Therefore, vacuum-insulated piping with excellent thermal insulation performance is used to transport liquefied gases from storage tanks. Boil-off gas (BOG) may be generated during the process of transporting cryogenic liquefied gas supplied through these vacuum-insulated pipes. To minimize the generation of evaporated gas, the piping can be manufactured as a double pipe, and a vacuum layer can be formed between the inner and outer pipes to minimize heat intrusion from the outside. Verification of the durability of pipes with these characteristics is required. To this end, various methods are used to verify the durability of pipes, and for example, a common method is to measure the ratio of evaporated gas generated in the pipe after the pipe is coated with a high-temperature liquid (e.g., water, ethylene glycol, etc.). However, the actual installation site of the piping can have different temperatures depending on the environment, and thus, there is a need for piping durability verification technology capable of measuring the rate of evaporation gas generated when cryogenic liquefied gas is supplied at such various temperatures. The aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot be considered as prior art disclosed to the general public prior to the filing of the present invention. FIG. 1 is a schematic diagram showing the environment of a piping performance measurement system according to an embodiment of the present invention. FIG. 2 is a flowchart illustrating the process of measuring piping performance according to an embodiment of the present invention. Figure 3 is a drawing showing the interior of the test chamber of Figure 1. FIG. 4 is a block diagram of the configuration of a piping performance measurement system according to an embodiment of the present invention. Hereinafter, embodiments of the inventions made in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are assigned the same reference number, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" for components used in the following description are assigned or used interchangeably solely for the ease of drafting the specification and do not have distinct meanings or roles in themselves. Furthermore, in describing the embodiments made in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments made in this specification, such detailed description will be omitted. Additionally, the attached drawings are intended only to facilitate easy understanding of the embodiments made in this specification; the technical concept made in this specification is not limited by the attached drawings, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the invention. Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. A singular expression includes plural expressions unless the context clearly indicates otherwise. In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. FIG. 1 is a schematic diagram showing the envir