Liquefied gas stratified sampling device

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a liquefied gas stratified sampling device which comprises a spherical tank, a closed sampling box, a tank inlet pipeline, a radar liquid level meter director pipe, a sampling pipeline outside the tank, a first branch line, a second branch line and a third branch line, the closed sampling box is arranged outside the spherical tank; the tank inlet pipeline is connected with an inlet of the spherical tank; the radar liquid level meter director tube is directly inserted into the spherical tank through a radar liquid level meter at the top of the spherical tank, and an upper liquid level sampling tube, a middle liquid level sampling tube and a lower liquid level sampling tube are sequentially arranged at the upper position, the middle position and the lower position of the radar liquid level meter director tube. An upper sampling pipeline, a middle sampling pipeline and a lower sampling pipeline are installed in the tank, an operator takes materials in the tank through a closed sampler at the upper point, the middle point and the lower point for real-time test and analysis, and the qualified product leaves a factory.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, specifically to a liquefied gas stratification sampling device. Background Technology

[0002] In the chemical production process, liquefied petroleum gas (LPG) is widely used as a clean energy source. The product is used in various fields, and customers have strict requirements for product quality. Because the sampling point of the existing sampler is on the inlet and outlet manifold of the spherical tank, the sampling can only represent the quality of the inlet and outlet manifold at the time of sampling, and cannot represent the quality of the material inside the tank, resulting in the product being unqualified after leaving the factory. Utility Model Content

[0003] In view of the deficiencies of the prior art, this utility model provides a liquefied gas stratified sampling device, which uses three sampling pipelines installed inside the tank (upper, middle, and lower) to allow operators to take samples of the material inside the tank at the upper, middle, and lower points in real time for testing and analysis. The product is released from the factory after passing the test.

[0004] To achieve the above objectives, the present invention provides a liquefied gas stratified sampling device, comprising a spherical tank, a sealed sampling box, an inlet pipeline, a radar level gauge guide tube, an external sampling pipeline, a first branch line, a second branch line, and a third branch line; the sealed sampling box is located outside the spherical tank; the inlet pipeline is connected to the inlet of the spherical tank; the radar level gauge guide tube is inserted directly into the spherical tank through the radar level gauge at the top, and an upper level sampling tube, a middle level sampling tube, and a lower level sampling tube are sequentially arranged at the upper, middle, and lower positions of the radar level gauge guide tube; the external sampling pipeline is connected to the flare network through the sealed sampling box, and a main valve at the tank root and a sampling cylinder are sequentially arranged on the external sampling pipeline. The main valve at the tank root is located outside the sealed sampling box, and the sampling cylinder is located inside the sealed sampling box; one end of the first branch line is connected to the upper liquid level sampling pipe, and the other end is connected to the external sampling pipeline; a first tank root valve is installed on the first branch line, and the first tank root valve is located outside the spherical tank; one end of the second branch line is connected to the middle liquid level sampling pipe, and the other end is connected to the external sampling pipeline; a second tank root valve is installed on the second branch line, and the second tank root valve is located outside the spherical tank; and one end of the third branch line is connected to the lower liquid level sampling pipe, and the other end is connected to the external sampling pipeline; a third tank root valve is installed on the third branch line, and the third tank root valve is located outside the spherical tank.

[0005] Furthermore, a main inlet valve is installed on the inlet pipeline.

[0006] Furthermore, a front valve is provided upstream of the sampling cylinder, and a rear valve is provided downstream of the sampling cylinder. Both the front valve and the rear valve are placed inside the sealed sampling box.

[0007] Furthermore, a bypass line is provided on the external sampling line, a bypass valve is provided on the bypass line, and the bypass line is located inside the sealed sampling box.

[0008] Furthermore, a flare network valve is also provided on the external sampling pipeline, and the flare network valve is located outside the sealed sampling box.

[0009] The beneficial effects of this utility model are as follows: During the production and operation of the spherical tank, after the liquefied gas product is filled and sealed, the operator takes samples of the material from three different locations inside the tank using a sampler. This ensures that the sampling results are more representative, and the quality of the material inside the tank can be monitored in real time, making the liquefied gas sampling more accurate and error-free. After the product analysis is qualified, it can be safely shipped out of the factory, thus eliminating product quality accidents. Attached Figure Description

[0010] Figure 1 This is a process flow diagram of the present invention;

[0011] In the picture: 100, spherical tank.

[0012] 200. Sealed sampling box

[0013] 300. Inlet pipeline; 310. Main inlet valve.

[0014] 400. Radar level gauge guide tube; 410. Upper level sampling tube; 420. Middle level sampling tube; 430. Lower level sampling tube.

[0015] 500. External sampling pipeline; 510. Main valve at the base of the tank; 520. Front valve; 530. Sampling cylinder; 540. Rear valve; 550. Valve to flare network; 560. Bypass pipeline; 561. Bypass valve.

[0016] 600, First branch line; 610, First tank root valve;

[0017] 700, Second Branch Line; 710, Second Tank Root Valve;

[0018] 800, Third Branch Line; 810, Third Tank Root Valve. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] like Figure 1 As shown, in one embodiment of this utility model, a liquefied gas stratified sampling device includes a spherical tank 100, a sealed sampling box 200, an inlet pipeline 300, a radar level gauge guide pipe 400, an external sampling pipeline 500, a first branch line 600, a second branch line 700, and a third branch line 800. The sealed sampling box 200 is located outside the spherical tank 100. The inlet pipeline 300 is connected to the inlet of the spherical tank 100. The radar level gauge guide pipe 400 is inserted directly into the spherical tank 100 through the radar level gauge at the top of the spherical tank 100. An upper liquid level sampling pipe 410, a middle liquid level sampling pipe 420, and a lower liquid level sampling pipe 430 are sequentially arranged at the upper, middle, and lower positions of the radar level gauge guide pipe 400. The external sampling pipeline 500 is connected to the flare network through the sealed sampling box 200. A main valve 510 at the bottom of the tank and a sampling pipe 530 are sequentially arranged on the external sampling pipeline 500. The sampling cylinder 530 and the main valve 510 at the tank root are located outside the sealed sampling box 200, and the sampling cylinder 530 is located inside the sealed sampling box 200; one end of the first branch line 600 is connected to the upper liquid level sampling pipe 410, and the other end is connected to the external sampling pipeline 500. The first tank root valve 610 is installed on the first branch line 600 and is located outside the spherical tank 100; one end of the second branch line 700 is connected to the middle liquid level sampling pipe 420, and the other end is connected to the external sampling pipeline 500. The second tank root valve 710 is installed on the second branch line 700 and is located outside the spherical tank 100; and one end of the third branch line 800 is connected to the lower liquid level sampling pipe 430, and the other end is connected to the external sampling pipeline 500. The third tank root valve 810 is installed on the third branch line 800 and is located outside the spherical tank 100.

[0021] In one embodiment, a main inlet valve 310 is provided on the inlet pipeline 300.

[0022] In one embodiment, a front valve 520 is provided upstream of the sampling cylinder 530, and a rear valve 540 is provided downstream of the sampling cylinder 530. Both the front valve 520 and the rear valve 540 are placed inside the sealed sampling box 200.

[0023] In one embodiment, a bypass line 560 is provided on the external sampling line 500, and a bypass valve 561 is provided on the bypass line 561. The bypass line 560 is located inside the sealed sampling box 200.

[0024] In one embodiment, an external sampling pipeline 500 is also provided with a flare network valve 550, which is located outside the sealed sampling box 200.

[0025] It should be noted that the radar level gauge guide tube 400 is directly inserted into the spherical tank 100 through the radar level gauge at the top of the spherical tank 100; the upper liquid level sampling tube 410, the middle liquid level sampling tube 420, and the lower liquid level sampling tube 430 are fixed at the upper, middle, and lower positions of the radar level gauge guide tube 400 inside the spherical tank 100; the first, second, and third tank root valves 810 are connected to the upper liquid level sampling tube 410, the middle liquid level sampling tube 420, and the lower liquid level sampling tube 430 inside the tank; the tank root main valve 510 is connected to the upper, middle, and lower sampling pipelines; the sealed sampling box 200 is installed outside the spherical tank 100; the sampling bottle is installed inside the sampling box; the sampling bottle front valve 520 is installed in the sampling bottle front pipeline; the sampling bottle rear valve 540 is installed in the sampling bottle rear pipeline; and the flare network valve 550 is installed on the flare network.

[0026] In the aforementioned liquefaction stratification sampling device, the radar level gauge guide tube 400 is inserted directly into the spherical tank 100 through the radar level gauge at the top of the tank 100. The upper level sampling tube 410, middle level sampling tube 420, and lower level sampling tube 430 are fixed inside the spherical tank 100 at the upper, middle, and lower positions of the radar level gauge guide tube 400, respectively. The first tank root valve 610 is connected to the upper level sampling tube 410 inside the tank, the second tank root valve 710 is connected to the middle level sampling tube 420, and the third tank root valve 810 is connected to the lower level sampling tube 430. The liquid level sampling pipe 430 is connected to the main valve 510 at the bottom of the tank, which is connected to the upper liquid level sampling pipe 410 through the first branch line 600. The main valve 510 at the bottom of the tank is connected to the middle liquid level sampling pipe 420 through the second branch line 700. The main valve 510 at the bottom of the tank is connected to the lower liquid level sampling pipe 430 through the third branch line 800. The sealed sampler is installed outside the spherical tank 100. The sampling cylinder 530 is installed inside the sampling box. The front valve 520 is installed in the pipeline before the sampling bottle, and the rear valve 540 is installed in the pipeline after the sampling bottle.

[0027] It should be noted that in the prior art, the original sampling point of the spherical tank 100 was on the inlet and outlet main pipe. The sample results could not represent the actual material quality inside the spherical tank 100. In order to ensure that the sample is more representative, this application installs three φ10 sampling steel pipes inside the tank. The position of the steel pipes is fixed on the radar level gauge guide pipe 400 of the spherical tank 100. The head of the steel pipe is installed at two-thirds, one-half, and one-third of the spherical tank 100. The lower part of the three sampling steel pipes is connected to the first, second, and third branch pipes through metal flexible connections. The three sampling branch valves are combined to the sampling tank root main valve 510 and connected to the sampler.

[0028] When the material in the spherical tank 100 reaches the full liquid level, if a sample of the upper liquid level is to be taken, the operator opens the first tank root valve 610, the tank root main valve 510, the front valve 520, the rear valve 540 and the valve to the flare network 550, and the material in the tank that can be taken from the upper liquid level sampling pipe 410. After the sampling is completed, all valves are closed.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A liquefied gas stratified sampling device, characterized in that: include spherical tank; A sealed sampling box is installed outside the spherical tank; The inlet pipeline is connected to the inlet of the spherical tank; The radar level gauge guide tube is inserted directly into the spherical tank through the radar level gauge at the top of the spherical tank. The upper liquid level sampling tube, the middle liquid level sampling tube, and the lower liquid level sampling tube are installed sequentially at the upper, middle, and lower positions of the radar level gauge guide tube. An external sampling pipeline is connected to the flare network through the sealed sampling box. The external sampling pipeline is equipped with a main valve at the tank root and a sampling cylinder in sequence. The main valve at the tank root is located outside the sealed sampling box, and the sampling cylinder is located inside the sealed sampling box. The first branch line is connected at one end to the upper liquid level sampling pipe and at the other end to the external sampling pipeline. A first tank root valve is provided on the first branch line, and the first tank root valve is located outside the spherical tank. The second branch line has one end connected to the intermediate liquid level sampling pipe and the other end connected to the external sampling pipeline. A second tank root valve is installed on the second branch line, and the second tank root valve is located outside the spherical tank. The third branch line is connected at one end to the lower liquid level sampling pipe and at the other end to the external sampling pipeline. A third tank root valve is installed on the third branch line and is located outside the spherical tank.

2. The liquefied gas stratified sampling device according to claim 1, characterized in that: A main inlet valve is installed on the inlet pipeline.

3. The liquefied gas stratified sampling device according to claim 1, characterized in that: A front valve is installed upstream of the sampling cylinder, and a rear valve is installed downstream of the sampling cylinder. Both the front valve and the rear valve are located inside the sealed sampling box.

4. The liquefied gas stratified sampling device according to claim 1, characterized in that: A bypass line is installed on the external sampling line, and a bypass valve is installed on the bypass line. The bypass line is located inside the sealed sampling box.

5. The liquefied gas stratified sampling device according to claim 1, characterized in that: The external sampling pipeline is also equipped with a flare network valve, which is located outside the sealed sampling box.

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