Gasifier for natural gas sampling system

Abstract

The utility model belongs to the technical field of natural gas sampling, and particularly discloses a gasifier for a natural gas sampling system. The problem that an existing gasifier cannot ensure continuity and stability of natural gas vaporization is effectively solved. Comprising a vacuum cavity, a sample inlet, a sample outlet, a sample coil and a heater. The sample inlet is formed in the vacuum cavity, a circulation channel for circulation and vaporization of a natural gas sample is arranged in the sample coil pipe, one end of the circulation channel is connected with the sample inlet, the other end of the circulation channel is connected with the sample outlet, the sample coil pipe is of a hollow coil pipe structure, and the heater extends into a hollow area on the inner side of the sample coil pipe. Heat conduction copper powder is arranged on the surface of the heater, a heat preservation layer is arranged on the outer side of the sample coil pipe, and a protection layer is arranged on the outer side of the heat preservation layer. The natural gas sampling device is favorable for ensuring the continuity and stability of natural gas vaporization, and ensuring the smooth proceeding of a natural gas sampling process and the accuracy of a sampling result.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas sampling, and in particular relates to a gasifier used in a natural gas sampling system. Background Art

[0002] The natural gas sampling and analysis system is a comprehensive solution. Such a system usually combines advanced sampling technology, analytical instruments and data processing software to provide comprehensive and accurate analysis results. The natural gas sampling system vaporizer is a key component in the natural gas sampling and analysis system, which is used to collect natural gas samples at a specific location. The natural gas sampling and analysis system is a comprehensive solution. Such a system usually combines advanced sampling technology, analytical instruments and data processing software to provide comprehensive and accurate analysis results. The vaporizer is mainly used to ensure that the supercritical natural gas entering the vaporizer is completely vaporized.

[0003] The structure of an existing vaporizer generally includes a main structure, a heating element, and a circulation pipeline. In order to convert liquid natural gas into gas, a heating element such as a heating wire or a burner is installed inside the vaporizer. These heating elements heat the inside of the vaporizer by providing heat so that the natural gas can be vaporized. Inside the vaporizer, the liquid natural gas flows through the circulation pipeline, contacts the heating element, and is heated and vaporized.

[0004] However, the existing vaporizers have the following shortcomings in actual use: the heat generated by the heating element cannot be transferred to various parts of the vaporizer more quickly and evenly, resulting in the inability of liquid natural gas to be evenly heated and efficiently vaporized. In addition, the external environment can easily affect the internal temperature of the vaporizer, causing heat to dissipate outward, making it impossible to ensure the continuity and stability of natural gas vaporization, affecting the accuracy of the sampling results. Utility Model Content

[0005] The utility model aims to provide a gasifier for a natural gas sampling system, which effectively solves the problem that the existing gasifier cannot ensure the continuity and stability of natural gas vaporization.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A vaporizer for a natural gas sampling system comprises a vacuum chamber, a sample inlet, a sample outlet, a sample coil and a heater. The sample inlet is arranged inside the vacuum chamber. A circulation channel for circulating and vaporizing the natural gas sample is arranged inside the sample coil. One end of the circulation channel is connected to the sample inlet, and the other end of the circulation channel is connected to the sample outlet. The sample coil is a hollow coil-shaped structure, and the heater extends into the hollow area inside the sample coil.

[0008] The surface of the heater is provided with heat-conducting copper powder, the outer side of the sample coil is provided with a heat-insulating layer, and the outer side of the heat-insulating layer is provided with a protective layer.

[0009] Furthermore, a low-temperature one-way valve is provided on the pipeline connecting the circulation channel and the sample inlet.

[0010] Furthermore, it also includes an inlet temperature detection device, which is inserted into the vacuum cavity outside the low-temperature one-way valve.

[0011] Furthermore, heat-conducting copper powder is provided around the sample coil.

[0012] Furthermore, the material used for the thermal insulation layer is porous vacuum silicon.

[0013] Furthermore, the material used for the protective layer is 316L stainless steel.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] The utility model arranges the sample inlet inside the vacuum cavity, designs the sample coil as a hollow coil structure, extends the heater into the hollow area inside the sample coil, arranges the heat-conducting copper powder on the surface of the heater, and arranges a heat-insulating layer on the outside of the sample coil, thereby improving the heat conduction efficiency of the vaporizer, reducing heat loss and maintaining a stable temperature, which is beneficial to ensuring the continuity and stability of natural gas vaporization, and ensuring the smooth progress of the natural gas sampling process and the accuracy of the sampling results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] A vaporizer for a natural gas sampling system, such as Figure 1 As shown, it includes a vacuum chamber 1, a sample inlet 2, a sample outlet 3, a sample coil 4 and a heater 5. The sample inlet 2 is arranged inside the vacuum chamber 1. The sample coil 4 is provided with a circulation channel for the circulation and vaporization of the natural gas sample. One end of the circulation channel is connected to the sample inlet 2, and the other end of the circulation channel is connected to the sample outlet 3. The sample coil 4 is a hollow coil structure, and the heater 5 extends into the hollow area inside the sample coil 4. In the vaporizer of the natural gas sampling system, the sample coil 4 is a key component, and its structural design and function are crucial to ensure the accuracy of sampling and the stable operation of the system.

[0018] In this embodiment, the sample coil 4 is made of corrosion-resistant and high-temperature resistant metal materials to adapt to the high-temperature environment that may be encountered during the vaporization process. Its structure is in the shape of a coil to increase the contact area with the heater 5 and improve the heat transfer efficiency. The main function of the sample coil 4 is to serve as a channel for the circulation of the natural gas sample and to achieve the vaporization of the sample under the action of the heater 5. When the liquid natural gas sample enters the sample coil 4, it absorbs heat and gradually converts into a gaseous state through contact with the heater 5. The coil-shaped structure of the sample coil 4 helps the natural gas sample to be evenly heated during the flow process, ensuring that the sample can be fully heated and vaporized during the entire vaporization process, helping to avoid local overheating or uneven vaporization problems, and improving the accuracy of sampling. Through the precise design and efficient heat transfer performance of the sample coil 4, it can be ensured that the natural gas sample is not contaminated or damaged during the vaporization process, thereby maintaining the original quality and characteristics of the sample.

[0019] In this embodiment, the heater 5 uses electric heating to gasify the natural gas. The power supply is 220VAC, 50Hz. The power of the heater 5 body is 540W. The heating of the heater can be controlled by PID temperature. The heating temperature can be automatically controlled as the sampling speed changes to meet the heat requirement for the vaporization of the collected natural gas, so that the outlet sample gas temperature is maintained above 60°C.

[0020] The surface of the heater 5 is provided with heat-conducting copper powder, and the provision of the heat-conducting copper powder can enhance the heat conduction efficiency of the vaporizer. Since copper has excellent thermal conductivity, the heat-conducting copper powder can quickly and evenly transfer the heat generated by the heater 5 to various parts of the vaporizer, ensuring that the liquid natural gas can be evenly heated and efficiently vaporized, which can not only improve the vaporization efficiency and shorten the sampling time, but also reduce energy waste and improve the energy efficiency of the entire system. Furthermore, in this embodiment, heat-conducting copper powder is also provided around the sample coil 4.

[0021] The outer side of the sample coil 4 is provided with an insulation layer 6. The insulation layer 6 is made of materials with good insulation properties, such as aluminum silicate, rock wool, glass fiber, porous vacuum silicon, etc. These materials not only have good insulation effects, but also have certain fire resistance and can adapt to the high-temperature working environment of the gasifier. The insulation layer 6 can be constructed by pasting, wrapping or spraying. After the insulation layer 6 is constructed, it should be fixed to the gasifier with appropriate fixings to prevent it from falling off or shifting during use. At the same time, the insulation layer 6 also needs to be sealed to prevent air or moisture from entering the insulation layer 6 and affecting its insulation performance.

[0022] In this embodiment, in order to enhance the durability and protective performance of the thermal insulation layer 6, a protective layer is provided outside the thermal insulation layer 6. The protective layer is made of 316L stainless steel and can resist corrosion, mechanical damage and other factors in the external environment.

[0023] In this embodiment, a low-temperature one-way valve 7 is provided on the pipe connecting the circulation channel and the sample inlet 2. The main function of the low-temperature one-way valve 7 is to ensure that the natural gas can only flow in the set direction during the vaporization process, prevent the occurrence of backflow, help maintain the stability and safety of the system, and prevent the potential risks caused by backflow. The low-temperature one-way valve 7 also has a certain flow control function, which can adjust the amount of natural gas passing through according to the needs of the natural gas sampling system. By accurately controlling the flow rate, the accuracy and stability of the sampling process can be ensured, and the influence of excessive or too small flow on the sampling results can be avoided. Since the natural gas may be in a low-temperature and high-pressure state during the sampling process, the low-temperature one-way valve 7 needs to be able to withstand such extreme working conditions. Therefore, the low-temperature one-way valve 7 is made of low-temperature and high-pressure resistant materials to ensure that it can still maintain good sealing and durability in a low-temperature environment. In this embodiment, the low-temperature one-way valve 7 also has a safety protection function, which can cut off the natural gas supply in time when an abnormality occurs in the natural gas sampling system to prevent accidents. By using it in conjunction with other safety devices in the natural gas sampling system, the safety and reliability of the entire sampling process can be ensured.

[0024] In this embodiment, an inlet temperature detection device 8 is also included, and the inlet temperature detection device 8 is inserted into the vacuum chamber 1 outside the low-temperature one-way valve 7. The inlet temperature detection device 8 can monitor the initial temperature of the natural gas sample entering the gasifier in real time. This data is crucial for understanding the original state of the sample and the temperature change in the subsequent vaporization process, and is helpful for analyzing the thermophysical parameters of the sample.

[0025] The utility model arranges the sample inlet 2 inside the vacuum chamber 1, designs the sample coil 4 as a hollow coil structure, extends the heater 5 into the hollow area inside the sample coil 4, arranges the heat-conducting copper powder on the surface of the heater 5, and arranges the heat-insulating layer 6 on the outside of the sample coil 4, thereby improving the heat conduction efficiency of the vaporizer, reducing heat loss and maintaining a stable temperature, which is beneficial to ensuring the continuity and stability of natural gas vaporization, and ensuring the smooth progress of the natural gas sampling process and the accuracy of the sampling results.

[0026] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A gasifier for a natural gas sampling system, characterized in that: The invention comprises a vacuum chamber, a sample inlet, a sample outlet, a sample coil and a heater, wherein the sample inlet is arranged inside the vacuum chamber, a flow channel for the circulation and vaporization of the natural gas sample is arranged inside the sample coil, one end of the flow channel is connected to the sample inlet, and the other end of the flow channel is connected to the sample outlet, the sample coil is a hollow coil structure, and the heater extends into the hollow area inside the sample coil; The surface of the heater is provided with heat-conducting copper powder, the outer side of the sample coil is provided with a heat-insulating layer, and the outer side of the heat-insulating layer is provided with a protective layer.

2. The gasifier for the natural gas sampling system according to claim 1, characterized in that: A low-temperature one-way valve is arranged on the pipeline connecting the circulation channel and the sample inlet.

3. The gasifier for the natural gas sampling system according to claim 2, characterized in that: It also includes an inlet temperature detection device, which is inserted into the vacuum cavity outside the low-temperature one-way valve.

4. The gasifier for the natural gas sampling system according to claim 3, characterized in that: Heat-conducting copper powder is arranged around the sample coil.

5. The gasifier for a natural gas sampling system according to claim 4, characterized in that: The material selected for the thermal insulation layer is porous vacuum silicon.

6. The gasifier for the natural gas sampling system according to claim 5, characterized in that: The material used for the protective layer is 316L stainless steel.

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