CN-115266219-B - Sampling module and sampling method for liquefied petroleum gas

Abstract

The application relates to a sampling module and a sampling method of liquefied petroleum gas, wherein the sampling module of liquefied petroleum gas comprises a mounting frame assembly, a rotary driving assembly, a sampling assembly and a rotary driving assembly, wherein the rotary driving assembly is fixedly arranged on the mounting frame assembly, the sampling assembly comprises a sampling tube structure, the sampling tube structure is provided with a sampling position and a replacement position, the sampling tube structure is connected with an output end of the rotary driving assembly, and the rotary driving assembly can drive the sampling tube structure to be positioned at the sampling position or the replacement position. The technical scheme of the application effectively solves the problems that the labor intensity of the liquefied petroleum gas in the prior art is high during sampling and the personnel injury of operators is easy to cause.

Inventors

• ZHAO HUAJIANG
• LI LINLIN
• NIU JIANJUN
• Kang Detai
• ZHAO LIANG
• WANG JIANNAN
• ZHAO WEIGUANG
• DENG JUN
• YI CHAOHUI
• LIU JIAN
• AO CHENG
• DAI LEI
• LIU ZHI

Assignees

• 北京楚翔飞科技开发有限责任公司

Dates

Publication Date

20260508

Application Date

20220909

Claims (7)

1. 1. A sampling module for liquefied petroleum gas, comprising: A mounting bracket assembly; a rotary drive assembly (10), the rotary drive assembly (10) being fixedly mounted on the mounting frame assembly; The sampling assembly (20), the sampling assembly (20) comprises a sampling tube structure (21), the sampling tube structure (21) is provided with a sampling position and a replacement position, and the sampling tube structure (21) is connected with the output end of the rotary driving assembly (10); the rotary driving assembly (10) can drive the sampling tube structure (21) to be positioned at the sampling position or the replacement position; The sampling tube structure (21) comprises a rotating plate (211), a sampling tube (212), a quantifying tube (213), an inlet valve (214) and an outlet valve (215), wherein the inlet valve (214) and the outlet valve (215) are both arranged on the rotating plate (211), an inlet of the sampling tube (212) is connected with the inlet valve (214), an outlet of the sampling tube (212) is connected with the outlet valve (215), and the quantifying tube (213) is arranged on the outlet side of the sampling tube (212); The sampling module of the liquefied petroleum gas further comprises a valve switch assembly (30), the valve switch assembly (30) is movably mounted on the rotating plate (211), and the inlet valve (214) and the outlet valve (215) can be connected with the valve switch assembly (30); Valve switch subassembly (30), valve switch subassembly (30) include translation board (31), export valve motor (32), first gear, second gear (33), import valve motor (34), third gear and fourth gear (35), export valve motor (32) and import valve motor (34) are all installed on translation board (31), first gear is installed on the output shaft of export valve motor (32), second gear (33) are installed on the operating shaft of export valve (215), third gear is installed on the output shaft of import valve motor (34), fourth gear (35) are installed on the operating shaft of import valve (214).
2. 2. The liquefied petroleum gas sampling module according to claim 1, wherein the valve switch assembly (30) further comprises a translation motor (36), a screw and a moving block, the translation motor (36) is mounted on the rotating plate (211), the screw is mounted on an output shaft of the translation motor (36), the moving block has a threaded hole adapted to the screw, and the moving block is fixed on the translation plate (31).
3. 3. The liquefied petroleum gas sampling module according to claim 1, wherein the rotary drive assembly (10), the rotary drive assembly (10) comprises a rotary drive motor, a rotary gear and a gear disc, the drive motor is fixed on the mounting frame assembly, the rotary gear is mounted on an output shaft of the drive motor, and the gear disc is fixed on a side of the rotary plate (211) facing away from the sampling assembly (20).
4. 4. A liquefied petroleum gas sampling module according to any one of claims 1 to 3, further comprising a main line assembly (40) and a pressure relief line assembly (50), the main line assembly (40) being in communication with the inlet of the sampling assembly (20), the pressure relief line assembly (50) being connected to the main line assembly (40).
5. 5. A method of sampling a liquefied petroleum gas, characterized in that the sampling method uses the sampling module according to any one of claims 1 to 4, the sampling method comprising the steps of: s10, replacing the inside of the sampling assembly; S20, sampling the liquefied petroleum gas and enabling the liquefied petroleum gas to enter a sampling assembly (20); S30, decompressing the sampled sampling assembly (20); s40, closing a sampling valve and a terminal valve of the sampling module.
6. 6. The sampling method according to claim 5, further comprising, in the step S10: S11, sampling a sample into a sampling assembly (20); S12, driving the sampling tube structure (21) to rotate by a preset angle through the rotary driving assembly (10).
7. 7. The sampling method according to claim 6, further comprising a purge prior to the step S20 after the step S10 is completed.

Description

Sampling module and sampling method for liquefied petroleum gas Technical Field The application relates to the technical field of sampling of liquefied petroleum gas, in particular to a sampling module and a sampling method of liquefied petroleum gas. Background Liquefied petroleum gas (Liquefied petroleum gas is abbreviated as LPG) is a mixture composed of light hydrocarbons such as propane, butane, propylene, butylene and the like, is colorless and low-toxicity gas at normal temperature and normal pressure, and is pressurized, cooled and liquefied by various devices in an oil refinery to obtain colorless and volatile liquid. Liquid ammonia (Liquid ammonia), also known as anhydrous ammonia, is a colorless, strongly irritating odor Liquid. In the prior art, the liquefied petroleum gas (propylene, butane, butylene and liquid ammonia) sampler has 80% of quantitative problem and dead volume replacement problem, when the sampling is carried out manually through the sampling steel cylinder, the sampling steel cylinder needs to be replaced and washed by samples for many times, and the sampling mode increases the labor intensity of operators and pollutes the environment, and is easy to cause personal injury of the operators. Disclosure of Invention The application provides a sampling module and a sampling method for liquefied petroleum gas, which are used for solving the problems that the liquefied petroleum gas in the prior art has higher labor intensity during sampling and causes personal injury to operators. The application provides a sampling module for liquefied petroleum gas, which comprises a mounting frame assembly, a rotary driving assembly and a sampling assembly, wherein the rotary driving assembly is fixedly arranged on the mounting frame assembly, the sampling assembly comprises a sampling tube structure, the sampling tube structure is provided with a sampling position and a replacement position, the sampling tube structure is connected with an output end of the rotary driving assembly, and the rotary driving assembly can drive the sampling tube structure to be positioned at the sampling position or the replacement position. Further, the sampling tube structure comprises a rotating plate, a sampling tube, a quantitative tube, an inlet valve and an outlet valve, wherein the inlet valve and the outlet valve are arranged on the rotating plate, the inlet of the sampling tube is connected with the inlet valve, the outlet of the sampling tube is connected with the outlet valve, and the quantitative tube is arranged on the outlet side of the sampling tube. Further, the liquefied petroleum gas sampling module further comprises a valve switch assembly movably mounted on the rotating plate, and the inlet valve and the outlet valve can be connected with the valve switch assembly. Further, the valve switch assembly comprises a translation plate, an outlet valve motor, a first gear, a second gear, an inlet valve motor, a third gear and a fourth gear, wherein the outlet valve motor and the inlet valve motor are both arranged on the translation plate, the first gear is arranged on an output shaft of the outlet valve motor, the second gear is arranged on an operation shaft of the outlet valve, the third gear is arranged on an output shaft of the inlet valve motor, and the fourth gear is arranged on the operation shaft of the inlet valve. Further, the valve switch assembly further comprises a translation motor, a screw rod and a moving block, the translation motor is arranged on the rotating plate, the screw rod is arranged on an output shaft of the translation motor, the moving block is provided with a threaded hole matched with the screw rod, and the moving block is fixed on the translation plate. Further, the rotary driving assembly comprises a rotary driving motor, a rotary gear and a gear disc, the driving motor is fixed on the mounting frame assembly, the rotary gear is mounted on an output shaft of the driving motor, and the gear disc is fixed on one side, deviating from the sampling assembly, of the rotary plate. Further, the sampling module further comprises a main pipeline component and a pressure relief pipeline component, the main pipeline component is communicated with an inlet of the sampling component, and the pressure relief pipeline component is connected to the main pipeline component. According to another aspect of the application, the sampling method of the liquefied petroleum gas is provided, and the sampling method uses the sampling module, and comprises the following steps of S10 replacing the inside of a sampling assembly, S20 sampling the liquefied petroleum gas into the sampling assembly, S30 decompressing the sampled sampling assembly, and S40 closing a sampling valve and a terminal valve of the sampling module. Further, the step S10 further comprises the steps of S11 of taking the sample into the sampling assembly and S12 of driving the sampling tube structure to rotate by a preset angle th