Liquefied gas odorless gas sampling interface assembly and liquefied gas odorless sampling system

Abstract

The utility model belongs to the technical field of chemical engineering and safety, and particularly relates to a liquefied gas odorless gas sampling interface assembly and a liquefied gas odorless sampling system. The utility model provides a liquefied gas odorless gas sampling interface assembly which comprises a first interface, a gasification nozzle and a second interface which are sequentially communicated along a gas flowing direction, and a multi-stage pressure reduction unit is arranged in the gasification nozzle. The multi-stage pressure reduction unit comprises a primary chamber, an intermediate chamber, a high-stage chamber and a gas outlet which are sequentially communicated in the gas flowing direction, the primary chamber is communicated with the first connector, and the gas outlet is communicated with the second connector. The first interface is suitable for being externally connected with a liquefied gas sampling device; and the second interface is suitable for being externally connected with a gas sampling bag. According to the utility model, by improving the sampling equipment and optimizing the sampling process, the safety and the operation efficiency can be obviously improved, and the adverse effect on the environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical industry and safety technology, especially relate to liquefied gas no peculiar smell gas sampling interface assembly and liquefied gas no peculiar smell sampling system. BACKGROUND

[0002] At present, when the joint tank area carries out sampling analysis to liquid hydrocarbon products, liquid liquefied gas is collected through the field sampling box, and is collected using the sampling bag. However, when the liquid liquefied gas enters the sampling bag, the internal pressure increases suddenly due to gasification expansion. To prevent the sampling bag from breaking, the sampling personnel usually pour the excess liquid into the water well. However, these liquid liquefied gases will quickly volatilize and emit peculiar smell, which goes against the environmental protection concept of the company to create a peculiar smell-free factory.

[0003] In addition, the gasification expansion operation itself also has a big safety hazard. If the liquid liquefied gas is not completely discharged, the residual liquid continues to gasify and expand, which may cause the sampling bag to break. Once the liquefied gas volatilizes and meets a naked flame or static electricity, it is easy to cause a fire, causing serious personal injury and property loss. This not only endangers the safety of employees, but also affects the stability of the production environment.

[0004] Therefore, the joint tank area urgently needs to innovate to solve this problem, optimize the sampling process, ensure the safe sampling of liquid liquefied gas, eliminate potential risks and hidden dangers, and maintain the environmental protection concept and safety production requirements of the factory. By improving the sampling equipment, the safety and operation efficiency can be significantly improved, the negative impact on the environment can be reduced, and finally the safe sampling without peculiar smell and hidden danger can be realized. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a liquefied gas no peculiar smell gas sampling interface assembly and a liquefied gas no peculiar smell sampling system, which are used to solve the problems in the prior art that the liquefied gas gasifies and expands in the sampling bag, causing the pressure to increase and possibly causing the sampling bag to break; to prevent the breakage, the sampling personnel pour the excess liquid into the water well, which produces peculiar smell and does not conform to the peculiar smell-free factory concept.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a liquefied gas no peculiar smell gas sampling interface assembly in the first aspect, which comprises a first interface, a gasification nozzle and a second interface that are sequentially communicated along the direction of gas flow, a plurality of stages of decompression units are arranged in the gasification nozzle, the plurality of stages of decompression units comprise a primary chamber, an intermediate chamber, a high-level chamber and a gas outlet that are sequentially communicated along the direction of gas flow, the primary chamber is communicated with the first interface, and the gas outlet is communicated with the second interface.

[0007] In some embodiments of the utility model, a connecting piece is further included, and the first interface and the gasification nozzle are connected through the connecting piece.

[0008] In some embodiments of the utility model, first threaded groove and second threaded groove are arranged in the connecting piece, a first external thread matched with the first threaded groove is arranged on the first interface to realize detachable threaded connection between the connecting piece and the first interface, and a second external thread matched with the second threaded groove is arranged on the gasification nozzle to realize detachable threaded connection between the connecting piece and the gasification nozzle.

[0009] In some embodiments of the utility model, a sealing piece is arranged at the threaded connection position of the connecting piece, the first interface and the gasification nozzle.

[0010] In some embodiments of the utility model, detachable threaded connection is realized between the gasification nozzle and the second interface.

[0011] In some embodiments of the utility model, the hole diameter of the primary chamber gradually decreases from one end close to the first interface to one end close to the intermediate chamber.

[0012] In some embodiments of the utility model, the intermediate chamber comprises a constant-diameter section and an expanding section in communication, the constant-diameter section is in communication with the primary chamber, and the expanding section is in communication with the advanced chamber; the hole diameter of the expanding section gradually increases from one end close to the primary chamber to one end close to the advanced chamber.

[0013] In some embodiments of the utility model, the hole diameter of the advanced chamber gradually decreases from one end close to the intermediate chamber to one end close to the gas outlet.

[0014] In some embodiments of the utility model, the hole diameter of one end of the primary chamber close to the first interface is 5-10mm, and the hole diameter of one end of the primary chamber close to the intermediate chamber is 3-8mm.

[0015] In some embodiments of the utility model, the hole diameter of the constant-diameter section of the intermediate chamber is 3-8mm, and the hole diameter of the expanding section of the intermediate chamber is 3-15mm.

[0016] In some embodiments of the utility model, the hole diameter of one end of the advanced chamber close to the intermediate chamber is 15-18mm, and the hole diameter of one end of the advanced chamber close to the gas outlet is 0.1-1mm.

[0017] In some embodiments of the utility model, the diameter of the gas outlet of the gasification nozzle is 0.4-1.5mm.

[0018] In some embodiments of the utility model, the diameter of the second interface is 18-22mm.

[0019] The utility model discloses a liquefied gas odorless sampling system, including liquefied gas odorless gas sampling interface subassembly, liquefied gas sampling device, gas sampling bag, the first interface of liquefied gas odorless gas sampling interface subassembly is connected with liquefied gas sampling device, and the second interface is linked with gas sampling bag.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] 1) improve safety: through the design of multistage pressure reduction unit, ensure that the liquefied gas is stable gasification in the sampling process, prevent the security risk caused by pressure drop or incomplete gasification, guarantee the safety of operating personnel.

[0022] 2) optimize sampling process: improve sampling equipment, simplify operation steps, improve sampling efficiency, make the sampling process more convenient and reliable.

[0023] 3) reduce environmental impact: through odorless gas sampling system, reduce the volatilization and emission of liquefied gas in the sampling process, avoid environmental pollution, maintain the environmental protection concept of factory.

[0024] 4) improve operation efficiency: adopt standardized interface design and flexible connection mode, so that equipment installation and disassembly are more rapid, and the overall operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the liquefied gas odorless sampling system of the utility model is shown.

[0026] Figure 2 The structure diagram of the liquefied gas odorless gas sampling interface subassembly of the utility model is shown.

[0027] Figure 3 The structure diagram of the gasification nozzle of the utility model is shown.

[0028] ELEMENT NUMBER EXPLANATION

[0029] 1 first interface

[0030] 2 connecting piece

[0031] 3 gasification nozzle

[0032] 31 primary chamber

[0033] 32 intermediate chamber

[0034] 33 high-level chamber

[0035] 34 gas outlet

[0036] 4 second interface

[0037] 5. Liquefied gas sampling device

[0038] 6 Gas sampling bags

[0039] 61. Conveying Pipeline Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0041] Please see Figures 1 to 3 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0042] like Figures 2-3 As shown, this utility model provides a liquefied petroleum gas (LPG) odorless gas sampling interface assembly, including a first interface 1, a vaporization nozzle 3, and a second interface 4 connected sequentially along the gas flow direction. The vaporization nozzle 3 is provided with a multi-stage pressure reduction unit, which includes a primary chamber 31, a secondary chamber 32, a secondary chamber 33, and an outlet 34 connected sequentially along the gas flow direction. The primary chamber 31 is connected to the first interface 1, and the outlet 34 is connected to the second interface 4. The first interface 1 is suitable for connecting an external LPG sampling device 5; the second interface 4 is suitable for connecting an external gas sampling bag 6.

[0043] The odorless liquefied gas sampling interface component provided in this application, such as Figure 2 It also includes a connector 2, through which the first interface 1 and the gasification nozzle 3 are connected.

[0044] The liquefied gas odorless gas sampling interface assembly provided by the application is characterized in that the connecting piece 2 is provided with a first threaded groove and a second threaded groove, the first interface 1 is provided with a first external thread matched with the first threaded groove to achieve detachable threaded connection between the connecting piece 2 and the first interface 1, and the gasification nozzle 3 is provided with a second external thread matched with the second threaded groove to achieve detachable threaded connection between the connecting piece 2 and the gasification nozzle 3. The above design ensures the stability of the overall structure of the system and prevents the parts from loosening or falling off during use. In addition, the threaded connection facilitates quick installation and disassembly, improves operation efficiency and flexibility, and facilitates equipment maintenance and repair.

[0045] The liquefied gas odorless gas sampling interface assembly provided by the application is characterized in that the connecting piece 2 is provided with a first threaded groove and a second threaded groove, the first interface 1 is provided with a first external thread matched with the first threaded groove to achieve detachable threaded connection between the connecting piece 2 and the first interface 1, and the gasification nozzle 3 is provided with a second external thread matched with the second threaded groove to achieve detachable threaded connection between the connecting piece 2 and the gasification nozzle 3. The above design ensures the stability of the overall structure of the system and prevents the parts from loosening or falling off during use. In addition, the threaded connection facilitates quick installation and disassembly, improves operation efficiency and flexibility, and facilitates equipment maintenance and repair.

[0046] The liquefied gas odorless gas sampling interface assembly provided by the application is characterized in that the connecting piece 2 is provided with a first threaded groove and a second threaded groove, the first interface 1 is provided with a first external thread matched with the first threaded groove to achieve detachable threaded connection between the connecting piece 2 and the first interface 1, and the gasification nozzle 3 is provided with a second external thread matched with the second threaded groove to achieve detachable threaded connection between the connecting piece 2 and the gasification nozzle 3. The above design ensures the stability of the overall structure of the system and prevents the parts from loosening or falling off during use. In addition, the threaded connection facilitates quick installation and disassembly, improves operation efficiency and flexibility, and facilitates equipment maintenance and repair.

[0047] The liquefied gas odorless gas sampling interface assembly provided by the application is characterized in that the connecting piece 2 is provided with a first threaded groove and a second threaded groove, the first interface 1 is provided with a first external thread matched with the first threaded groove to achieve detachable threaded connection between the connecting piece 2 and the first interface 1, and the gasification nozzle 3 is provided with a second external thread matched with the second threaded groove to achieve detachable threaded connection between the connecting piece 2 and the gasification nozzle 3. The above design ensures the stability of the overall structure of the system and prevents the parts from loosening or falling off during use. In addition, the threaded connection facilitates quick installation and disassembly, improves operation efficiency and flexibility, and facilitates equipment maintenance and repair.

[0048] The liquefied gas odorless gas sampling interface assembly provided by the application is characterized in that Figure 3 The aperture of the primary chamber 31 gradually decreases from the end close to the first interface 1 to the end close to the intermediate chamber 32. For example, the aperture of the end of the primary chamber 31 close to the first interface 1 is 5-10 mm, which can be selected as 5-6 mm, 6-7 mm, 7-8 mm, or 8-10 mm, etc. The aperture of the end of the primary chamber 31 close to the intermediate chamber 32 is 3-8 mm, which can be selected as 3-4 mm, 4-5 mm, 5-6 mm, 6-7 mm, or 7-8 mm, etc.

[0049] The liquefied gas odorless gas sampling interface assembly provided by the application is characterized in that Figure 3The intermediate chamber 32 comprises a communicating constant-diameter section 321 and an expanding-hole section 322, the constant-diameter section 321 is in communication with the primary chamber 31, and the expanding-hole section 322 is in communication with the high-level chamber 33; the hole diameter of the expanding-hole section 322 gradually increases from the end close to the primary chamber 31 to the end close to the high-level chamber 33. For example, the hole diameter of the constant-diameter section of the intermediate chamber 32 is 3-8 mm, which can be 3-4 mm, 4-5 mm, 5-6 mm, 6-7 mm, or 7-8 mm, etc. The hole diameter of the expanding-hole section of the intermediate chamber 32 is 3-15 mm, which can be 3-5 mm, 5-8 mm, 8-10 mm, 10-12 mm, 12-14 mm, or 14-15 mm, etc.

[0050] The liquefied gas odorless gas sampling interface assembly provided by the present application comprises a gasification nozzle 3, a primary chamber 31, an intermediate chamber 32, a high-level chamber 33, and a gas outlet 34. Figure 3 The hole diameter of the high-level chamber 33 gradually decreases from the end close to the intermediate chamber 32 to the end close to the gas outlet 34. For example, the hole diameter of the end of the high-level chamber 33 close to the intermediate chamber 32 is 15-18 mm, which can be 15-16 mm, 16-17 mm, 17-18 mm, 18-19 mm, or 19-20 mm, etc. The hole diameter of the end of the high-level chamber 33 close to the gas outlet 34 is 0.1-1 mm, which can be 0.1-0.2 mm, 0.2-0.3 mm, 0.3-0.4 mm, 0.4-0.5 mm, 0.5-0.6 mm, 0.6-0.7 mm, 0.7-0.8 mm, 0.8-0.9 mm, or 0.9-1 mm, etc.

[0051] In the liquefied gas odorless gas sampling interface assembly provided by the present application, the diameter of the gas outlet 34 of the gasification nozzle 3 is 0.4-1.5 mm, which can be 0.4-0.6 mm, 0.6-0.8 mm, 0.8-1 mm, 1-1.2 mm, or 1.2-1.5 mm, etc. The above design helps to accurately control the flow of liquefied gas and ensure the optimization of the gasification process. In addition, this design provides the ability to adjust flexibly, which can adapt to different operating environments and conditions, maintain stable and efficient working performance in various environments, effectively reduce the risk of rupture of the gas sampling bag due to excessive pressure, and improve the safety and reliability of the sampling process.

[0052] The liquefied gas odorless gas sampling interface assembly provided by the application, the diameter of the second interface 4 is 18-22mm, which can be selected as 18-19mm, 19-20mm, 20-21mm or 21-22mm, etc. The second interface 4 in the diameter range is suitable for different sizes of gas sampling bags, enhancing the versatility and operation convenience of the device. The sealing connection of the second interface 4 and the conveying pipeline 61 of the gaseous sampling bag 6 can ensure that the system has better air tightness, prevents gas leakage, improves the accuracy and purity of the sample, and thus ensures the safety and stability of the whole sampling process.

[0053] As Figure 1 The utility model discloses a liquefied gas odorless sampling system, including liquefied gas odorless gas sampling interface assembly, liquefied gas sampling device 5, gas sampling bag 6, the first interface 1 of liquefied gas odorless gas sampling interface assembly is connected with liquefied gas sampling device 5, and the second interface 4 is connected with gas sampling bag 6. The diameter of the liquid inlet of the gasification nozzle 3 in the liquefied gas odorless gas sampling interface assembly is selected according to the liquefied gas sampling device 5, which can ensure the flow of liquefied gas. When the liquid liquefied gas flows through the gasification nozzle 3, the pressure is gradually reduced and the flow is controlled. When the gas outlet 34 of the gasification nozzle 3, the external environment is normal temperature and pressure, when the liquefied gas is exposed to the normal pressure environment at normal temperature, it exceeds its boiling point, the liquid molecules obtain enough energy to overcome the intermolecular force, and the liquid liquefied gas is rapidly gasified, so that the efficient and stable gasification process is realized.

[0054] The use process of the utility model: when using the liquefied gas odorless gas sampling interface assembly and the liquefied gas odorless sampling system, first, the first interface 1 is connected with the liquefied gas sampling device 5, and the stability and air tightness of the connection are ensured by using the connecting piece 2 and the sealing piece. The liquid liquefied gas enters the multistage pressure reduction unit in the gasification nozzle 3 through the first interface 14, and is gradually reduced and gasified through the primary chamber 31, the intermediate chamber 32 and the high chamber 33. The gasified gas enters the gas sampling bag 6 through the second interface 4, ensuring that there is no odor and safety hazard during the sampling process. After sampling is completed, the equipment is safely disassembled, the sealing property of the sampling bag is checked, and cleaning and maintenance are performed. In this way, the safety and odorless sampling of liquefied gas are realized.

[0055] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A liquefied gas odorless gas sampling interface assembly comprising: The interface assembly comprises a first interface (1), a gasification nozzle (3) and a second interface (4) connected in sequence along the direction of gas flow, wherein the gasification nozzle (3) is provided with a multi-stage pressure reduction unit, and the multi-stage pressure reduction unit comprises a primary chamber (31), an intermediate chamber (32), a high-level chamber (33) and a gas outlet (34) connected in sequence along the direction of gas flow, the primary chamber (31) is connected with the first interface (1), and the gas outlet (34) is connected with the second interface (4).

2. The liquefied gas odorless gas sampling interface assembly of claim 1, wherein, The interface assembly further comprises a connecting piece (2), and the first interface (1) and the gasification nozzle (3) are connected through the connecting piece (2).

3. The liquefied gas odorless gas sampling interface assembly of claim 2, wherein, The connecting piece (2) is provided with a first threaded groove and a second threaded groove, the first interface (1) is provided with a first external thread matched with the first threaded groove to realize detachable threaded connection between the first interface (1) and the connecting piece (2), and the gasification nozzle (3) is provided with a second external thread matched with the second threaded groove to realize detachable threaded connection between the gasification nozzle (3) and the connecting piece (2).

4. The liquefied gas odorless gas sampling interface assembly of claim 3, wherein, The connecting piece (2) is provided with a sealing element at the threaded connection position of the first interface (1) and the gasification nozzle (3) respectively.

5. The liquefied gas odorless gas sampling interface assembly of claim 1 wherein, The gasification nozzle (3) and the second interface (4) are detachably connected in a threaded manner.

6. The liquefied gas odorless gas sampling interface assembly of claim 1 wherein, The aperture of the primary chamber (31) gradually decreases from the end close to the first interface (1) to the end close to the intermediate chamber (32). The intermediate chamber (32) comprises a constant-diameter section (321) and an expanded-hole section (322) connected in sequence, the constant-diameter section (321) is connected with the primary chamber (31), and the expanded-hole section (322) is connected with the high-level chamber (33); the aperture of the expanded-hole section (322) gradually increases from the end close to the primary chamber (31) to the end close to the high-level chamber (33). The aperture of the high-level chamber (33) gradually decreases from the end close to the intermediate chamber (32) to the end close to the gas outlet (34).

7. The liquefied gas odorless gas sampling interface assembly of claim 6 wherein, The aperture of the end of the primary chamber (31) close to the first interface (1) is 5-10 mm, and the aperture of the end of the primary chamber (31) close to the intermediate chamber (32) is 3-8 mm. The aperture of the constant-diameter section (321) of the intermediate chamber (32) is 3-8 mm, and the aperture of the expanded-hole section (322) of the intermediate chamber (32) is 3-15 mm. The aperture of the end of the high-level chamber (33) close to the intermediate chamber (32) is 15-18 mm, and the aperture of the end of the high-level chamber (33) close to the gas outlet (34) is 0.1-1 mm.

8. The liquefied gas odorless gas sampling interface assembly of claim 1 wherein, The diameter of the gas outlet (34) of the gasification nozzle (3) is 0.4-1.5 mm.

9. The liquefied gas odorless gas sampling interface assembly of claim 1 wherein, The diameter of the second interface (4) is 18-22 mm.

10. A non-odor sampling system for liquefied gas, characterized by, The interface assembly, a liquefied gas sampling device (5) and a gas sampling bag (6) are provided, the first interface (1) of the interface assembly is connected with the liquefied gas sampling device (5), and the second interface (4) is connected with the gas sampling bag (6).

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