Movable tank car sampling system

Abstract

The utility model belongs to the technical field of tank car sampling, and provides a movable tank car sampling system which comprises a liquid phase quick connector, the sampling pipeline is provided with a sampling discharge valve and a sampling branch, the sampling discharge valve is arranged close to the liquid phase quick connector, and the sampling branch is provided with a sampling bottle for sampling; the material return pipeline is provided with a material return valve and a material recovery tank, the material return valve is arranged close to the liquid phase quick connector, and the material recovery tank is communicated with the sampling branch; the purging pipeline is communicated with the sampling pipeline and the material returning pipeline, and the tail ends of one ends of the sampling pipeline, the material returning pipeline and the purging pipeline are communicated and are all communicated with the liquid phase quick connector. According to the mobile tank car sampling system provided by the utility model, a worker does not need to climb to the top of a tank car for sampling, so that the safety of the sampling process is ensured, the pipeline in the sampling system can be purged and cleaned after sampling each time, sample liquid residues in the pipeline are avoided, multiple times of sampling can be realized, cross contamination among sample liquid is avoided, and the sampling accuracy is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of tank truck sampling, in particular to a mobile tank truck sampling system. Background Art

[0002] At present, the current tank truck sampling method is generally fixed-position manual sampling, which requires the tank truck to be stopped at the designated sampling and testing position, and the operator needs to climb onto the tank truck and open the top cover of the tank truck to perform corresponding operations. The above method for tank truck sampling has the following problems and defects:

[0003] (1) The tank truck needs to be parked at the designated sampling and testing location, and sampling can only be performed at a fixed location, which results in low flexibility and poor convenience in sampling operations;

[0004] (2) The gas connection interface of some tank trucks is set on the top of the tank truck. During the process of connecting the gas phase port, the sampling personnel need to get on and off the vehicle to operate, which is cumbersome and poses safety risks;

[0005] (3) It is difficult to recover the circulating fluid and sample bottle rinse samples from the tank truck. The samplers need to climb to the top of the tank truck to open the cover for recovery. The whole process is highly dangerous and poses a potential safety hazard, which seriously threatens the personal safety of the samplers.

[0006] Therefore, it is necessary to design a mobile tank truck sampling system that can effectively solve the above problems and pain points. Summary of the invention

[0007] In order to solve the above technical problems, the utility model proposes a mobile tank truck sampling system, which does not require manual climbing to the top of the tank truck for sampling, ensures the safety of the sampling process, reduces the difficulty of sampling, improves the convenience of sampling, and can blow and clean the internal pipeline of the sampling system after each sampling to avoid residual sample liquid in the pipeline. Multiple sampling can be achieved and cross contamination of the sample liquid during the sampling process can be avoided, thereby ensuring the accuracy of sampling.

[0008] The technical solution of the utility model is:

[0009] The utility model provides a mobile tank truck sampling system, comprising:

[0010] A liquid phase quick interface, which is detachably connected to the liquid phase interface of the tank truck;

[0011] A sampling pipeline, wherein the sampling pipeline is provided with a sampling discharge valve and a sampling branch, the sampling discharge valve is arranged close to the liquid phase quick interface, and the sampling branch is provided with a sampling bottle for sampling;

[0012] A material return pipeline, wherein the material return pipeline is provided with a material return valve and a material recovery tank, the material return valve is arranged close to the liquid phase quick interface, and the material recovery tank is connected to the sampling branch;

[0013] A purge pipeline, which is connected to the sampling pipeline and the return pipeline;

[0014] Wherein, one end of the sampling pipeline, the return pipeline, and the purge pipeline are connected and communicated, and all are connected and communicated with the liquid quick connector.

[0015] Preferably, the sampling branch includes an open branch and a closed branch connected in parallel, and the ends of the open branch and the closed branch are both connected and communicated with the return pipeline.

[0016] Preferably, the open branch is provided with an on-site sampling port connected to the sampling pipeline, and a liquid material collection tank connected to the return pipeline;

[0017] A sampling valve is provided at the on-site sampling port, a collection tank valve is provided at the liquid material collection tank, and the on-site sampling port is located above the liquid material collection tank.

[0018] Preferably, the open branch is further provided with a pressure relief branch connected to the return pipeline, the pressure relief branch is connected to the liquid material collection tank, and a gas release valve is provided on the pressure relief branch.

[0019] Preferably, the closed branch is provided with a sealed sampling bottle and a bypass branch connected in parallel thereto;

[0020] The feeding end of the sealed sampling bottle is connected and communicated with the sampling pipeline and is provided with an aggregate valve, the discharging end is connected and communicated with the return pipeline and is provided with a discharging valve, and the bypass branch is provided with a material return valve.

[0021] Preferably, the purge pipeline is provided with a purge gas cylinder, and a purge branch and a material return branch connected to the purge gas cylinder;

[0022] The purge gas cylinder is provided with a cylinder valve, the purge branch is connected and communicated with the sampling pipeline, and the material return branch is connected and communicated with the return pipeline.

[0023] Preferably, the purge branch is provided with a gas phase balance valve and a purge pressure gauge connected in sequence, and the gas phase balance valve is arranged close to the liquid quick connector;

[0024] The material return branch is connected to the return pipeline, and a material return gas source valve is provided on the material return branch.

[0025] Preferably, the sampling pipeline is further provided with a sampling liquid level gauge, which is located between the sampling discharging valve and the sampling branch;

[0026] The return pipeline is further provided with a return liquid level gauge, which is located between the return valve and the material recovery tank.

[0027] Preferably, a liquid drainer is further provided on the return pipeline, and the liquid drainer is located between the return valve and the return liquid level gauge;

[0028] A tank pressure gauge is provided on the material recovery tank.

[0029] Preferably, the mobile tanker sampling system provided by the present utility model further includes a grounding branch circuit, and the grounding branch circuit is provided with a static electricity clamp, a static electricity alarm, a field grounding terminal, and a human body static electricity release button that are connected in sequence, and the static electricity clamp is connected to the tanker grounding terminal.

[0030] The present utility model has the following advantages and effects compared with the prior art:

[0031] (1) By adopting a purge pipeline connected to the sampling pipeline and the return pipeline, after sampling, the residual sample liquid in the pipeline of the sampling system can be purged and cleaned through the purge pipeline, ensuring that there is no liquid stored in the internal pipeline of the sampling system, so as to realize multiple samplings of different materials and different vehicle trips, improving the convenience and efficiency of sampling while ensuring the authenticity of sampling;

[0032] (2) By adopting a return pipeline provided with a material recovery tank, the material recovery tank can store the sample liquid for rinsing the sample bottle and recover it through the purge pipeline, reducing the difficulty of recovering the circulating liquid and the sample liquid for rinsing the bottle during the sampling process, and improving the operation efficiency of sampling;

[0033] (3) By adopting a purge pipeline provided with a purge gas cylinder, there is no need to connect to the gas phase port of the tanker during the sampling process, and it is possible to simultaneously realize pressurized sampling or atmospheric sampling of the tanker. It has strong practicability and a wide range of applications. For the gas phase ports provided on the top of some tankers, it avoids operators climbing to the top of the tanker during the sampling process, eliminating the safety risks and hidden dangers existing during the process of getting on and off the vehicle by sampling personnel. Description of the Drawings

[0034] Figure 1 It is a schematic structural diagram of the mobile tanker sampling system in the embodiment of the present utility model.

[0035] Reference Numerals: 1, liquid-phase quick connector; 2, sampling pipeline; 21, sampling liquid level gauge; 3, sampling discharge valve; 4, sampling branch; 41, open branch; 411, on-site sampling port; 412, liquid collection tank; 413, sampling valve; 414, collection tank valve; 415, pressure relief branch; 416, air release valve; 42, closed branch; 421, airtight sampling bottle; 422, bypass branch; 423, aggregate valve; 424, discharge valve; 425, material return valve; 5, material return pipeline; 51, material return valve; 52, material recovery tank; 53, material return liquid level gauge; 54, liquid separator; 55, tank pressure gauge; 6, purge pipeline; 61, purge gas cylinder; 611, gas cylinder valve; 62, purge branch; 621, gas-phase balance valve; 622, purge pressure gauge; 63, material return branch; 631, material return gas source valve; 7, grounding branch; 71, static clamp; 72, static alarm; 73, on-site grounding terminal; 74, human body static electricity release button. Detailed Embodiment

[0036] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described below in conjunction with the specific embodiments.

[0037] Embodiment:

[0038] As Figure 1 shown, the present invention provides a mobile tanker sampling system, including a liquid-phase quick connector 1 for connecting the tanker sampling port, a sampling pipeline 2 for sampling, a material return pipeline 5 for recycling the circulating sample material and the sample bottle rinsing sample material, a purge pipeline 6 for purging and cleaning the liquid stored in the pipeline, and a grounding branch 7 for static electricity release. Among them, one end of the sampling pipeline 2, the material return pipeline 5, and the purge pipeline 6 close to the liquid-phase quick connector 1 are connected and communicated, and are all connected and communicated with the liquid-phase quick connector 1. The liquid-phase quick connector 1 is detachably and hermetically connected to the tanker liquid-phase interface. During the sampling process, only the liquid-phase quick connector 1 needs to be connected to the tanker liquid-phase interface, and there are no requirements and restrictions on the position of the tanker. Compared with the existing sampling process that can only sample at a fixed position, it has higher flexibility and convenience.

[0039] Reference Figure 1As shown, the sampling pipeline 2 is provided with a sampling discharge valve 3, a sampling liquid level gauge 21, and a sampling branch 4 connected in sequence. The sampling discharge valve 3 is arranged close to the liquid-phase quick connector 1. The glass sampling liquid level gauge 21 is located between the sampling discharge valve 3 and the sampling branch 4. The sampling branch 4 includes an open branch 41 and a closed branch 42 connected in parallel. The end of the sampling branch 4 is communicated with the return pipeline 5. The open branch 41 is used for sampling with an open sampling bottle, and the closed branch 42 is used for sampling with a closed sampling bottle 421. Specifically, the open branch 41 is provided with a field sampling port 411 communicated with the sampling pipeline 2 and a liquid material collection tank communicated with the return pipeline 5. The field sampling port 411 is provided with a sampling valve 413, and the liquid material collection tank is provided with a collection tank valve 414. The field sampling port 411 is located above the liquid material collection tank. During the sampling process, the open sampling bottle is placed in the liquid material collection tank, and the liquid material is collected into the open sampling bottle through the field sampling port 411. At the same time, the liquid material for rinsing the open sampling bottle can be poured into the liquid material collection tank and recycled through the return pipeline 5; the open branch 41 is also provided with a pressure relief branch 415 connected to the material recovery tank 52 of the return pipeline 5. The pressure relief branch 415 is provided with a gas release valve 416. One end of the pressure relief branch 415 is connected to the liquid material collection tank, and the other end is connected to the material recovery tank 52 of the return pipeline 5 to release the pressure in the pipeline. The closed branch 42 is provided with a closed sampling bottle 421 and a bypass branch 422 connected in parallel with it. The feed end of the closed sampling bottle 421 is communicated with the sampling pipeline 2 and is provided with an aggregate valve 423. The discharge end of the closed sampling bottle 421 is communicated with the material recovery tank 52 of the return pipeline 5 and is provided with a discharge valve 424. The bypass branch 422 is provided with a material return valve 425.

[0040] The return pipeline 5 is provided with a return valve 51, a liquid separator 54, a return liquid level gauge 53, and a material recovery tank 52 connected in sequence. The return valve 51 is arranged close to the liquid-phase quick connector 1. The material recovery tank 52 is communicated with the end of the sampling pipeline 2. Specifically, the material recovery tank 52 is communicated with the liquid material collection tank of the open branch 41, the closed sampling bottle 421 of the closed branch 42, and the bypass branch 422. The material recovery tank 52 is provided with a tank pressure pressure gauge 55. It should be noted that the liquid separator 54 is specifically a steam trap, which can be any one of a mechanical steam trap, a thermostatic steam trap, and a thermodynamic steam trap. In view of its being a mature existing technology, the specific structure and principle of the liquid separator 54 will not be elaborated here.

[0041] The purging pipeline 6 is provided with a purging gas cylinder 61, a purging branch 62 and a material discharging branch 63 connected to the purging gas cylinder 61. The purging gas cylinder 61 is provided with a gas cylinder valve 611. The purging branch 62 communicates with the sampling pipeline 2, and the material discharging branch 63 communicates with the material return pipeline 5. The purging branch 62 is provided with a gas phase balance valve 621 and a purging pressure gauge 622 connected in sequence. The gas phase balance valve 621 is arranged close to the liquid phase quick connector 1. The material discharging branch 63 is connected to the material recovery tank 52 of the material return pipeline 5, and the material discharging branch 63 is provided with a material discharging gas source valve 631.

[0042] The grounding branch 7 is provided with an electrostatic clamp 71, an electrostatic alarm 72, a field grounding terminal 73 and a human body static electricity release button 74 connected in sequence. The electrostatic clamp 71 is detachably connected to the grounding terminal of the tank truck. During the sampling process, the electrostatic clamp 71 is connected to the grounding terminal of the tank truck. The field grounding terminal 73 is grounded on site, and the sampling personnel touch the human body static electricity release button 74 to release the static electricity carried by the tank truck and the sampling personnel themselves. Further, the electrostatic alarm 72 includes an audible alarm (such as a buzzer) and / or a visual alarm (a warning light) to remind the sampling personnel to perform the static electricity release operation.

[0043] The following describes the specific operation steps for sampling using the mobile tank truck sampling system provided in this embodiment:

[0044] Sampling operation steps for the open sampling bottle:

[0045] The operator touches the human body static electricity release button 74 with hand, and the audible alarm of the static electricity alarm 72 stops, and the visual alarm changes from yellow to green; then close all the valves on the sampling system; connect the static electricity clamp 71 to the grounding end of the tanker, and ground at the on-site grounding end 73. After the static electricity alarm 72 stops; connect the liquid-phase quick connector 1 to the liquid-phase port of the tanker, and open the sampling discharge valve 3, the collection tank valve 414, and the air release valve 416; after observing that there is liquid in the glass sampling liquid level gauge 21, place the open sampling bottle in the liquid collection tank 412, open the sampling valve 413, and the sample material reaches the open sampling bottle through the on-site sampling port 411; the sample material for rinsing the open sampling bottle can be poured into the liquid collection tank 412; after obtaining a suitable sample, close the sampling valve 413. Subsequently, close the liquid-phase quick connector 1 and the collection tank valve 414 in sequence, and open the material return valve 425, the gas cylinder valve 611, and the gas phase balance valve 621 to purge all the sample material in the sampling system pipeline into the material recovery tank 52; when observing that there is no liquid at the bottom of the glass sampling liquid level gauge 21, close the gas phase balance valve 621, the sampling discharge valve 3, the material return valve 425, and the air release valve 416, and then open the material return gas source valve 631, the material return valve 51, and the liquid-phase quick connector 1 in sequence to purge the material in the material recovery tank 52 back into the tanker; when observing that there is no liquid in the glass material return liquid level gauge 53, close the liquid-phase quick connector 1, the material return gas source valve 631, and the gas cylinder valve 611, and open the air release valve 416 to release the pressure in the material recovery tank 52 and the sampling system pipeline; finally, disconnect the connection between the liquid-phase quick connector 1 and the liquid-phase port of the tanker, and the connection between the static electricity clamp 71 and the grounding end of the tanker in sequence; this sampling is completed.

[0046] Sampling operation steps for the closed sampling bottle 421:

[0047] The operator touches the human body static electricity release button 74 with his hand, the audible alarm of the static electricity alarm 72 stops, and the optical alarm changes from yellow to green; then close all the valves on the sampling system; connect the static electricity clamp 71 to the grounding end of the tanker, and ground the on-site grounding end 73 on-site. After the static electricity alarm 72 stops; connect the liquid-phase quick connector 1 to the liquid-phase port of the tanker, and open the sampling discharge valve 3 and the air release valve 416; after observing that there is liquid in the glass sampling liquid level gauge 21, install the airtight sampling bottle 421 on the sampling system, open the aggregate valve 423 and the discharge valve 424, and the material reaches the airtight sampling bottle 421; the material for rinsing the airtight sampling bottle 421 will enter the material recovery tank 52; after obtaining a suitable sample, close the aggregate valve 423 and the discharge valve 424 and remove the airtight sampling bottle 421. Close the liquid-phase quick connector 1, open the material discharge valve 425, the gas cylinder valve 611, and the gas-phase balance valve 621 to purge all the materials in the sampling system pipeline into the material recovery tank 52; when observing that there is no liquid at the bottom of the glass sampling liquid level gauge 21, close the gas-phase balance valve 621, the sampling discharge valve 3, the material discharge valve 425, and the air release valve 416, and then open the material discharge air source valve 631, the return material valve 51, and the liquid-phase quick connector 1 in sequence to purge the materials in the material recovery tank 52 back into the tanker. When observing that there is no liquid in the glass return material liquid level gauge 53, close the liquid-phase quick connector 1, the material discharge air source valve 631, and the gas cylinder valve 611, and open the air release valve 416 to release the pressure in the material recovery tank 52 and the sampling system pipeline; finally, disconnect the connection between the liquid-phase quick connector 1 and the liquid-phase port of the tanker, and the connection between the static electricity clamp 71 and the grounding end of the tanker in sequence; this sampling is completed.

[0048] In summary, the mobile tanker sampling system provided by the present utility model does not require manual climbing to the top of the tanker for sampling, ensuring the safety of the sampling process, reducing the difficulty of sampling, improving the convenience of sampling, and can purge and clean the internal pipeline of the sampling system after each sampling to avoid the residual sample liquid inside the pipeline, enabling multiple samplings and avoiding cross-contamination of the sample liquid during the sampling process, ensuring the accuracy of sampling.

[0049] The above is only the preferred embodiment of the present utility model, and does not limit the patent scope of the present utility model accordingly. All equivalent changes and modifications made according to the scope of the present utility model should still fall within the scope covered by the present utility model.

Claims

1. A mobile tank truck sampling system, characterized in that: include: A liquid phase quick interface (1), wherein the liquid phase quick interface (1) is detachably connected to the liquid phase interface of the tank truck; A sampling pipeline (2), wherein the sampling pipeline (2) is provided with a sampling discharge valve (3) and a sampling branch (4), wherein the sampling discharge valve (3) is arranged close to the liquid phase quick interface (1), and the sampling branch (4) is provided with a sampling bottle for sampling; A material return pipeline (5), wherein the material return pipeline (5) is provided with a material return valve (51) and a material recovery tank (52), wherein the material return valve (51) is arranged close to the liquid phase quick interface (1), and the material recovery tank (52) is connected to the sampling branch (4); A purge pipeline (6), the purge pipeline (6) being connected to the sampling pipeline (2) and the return pipeline (5); Wherein, one end of the sampling pipeline (2), the return pipeline (5), and the purge pipeline (6) are connected to each other, and are all connected to the liquid phase quick interface (1).

2. The mobile tank truck sampling system according to claim 1, characterized in that: The sampling branch (4) comprises an open branch (41) and a closed branch (42) connected in parallel, and the ends of the open branch (41) and the closed branch (42) are both connected to the return pipeline (5).

3. The mobile tank truck sampling system according to claim 2, characterized in that: The open branch (41) is provided with an on-site sampling port (411) connected to the sampling pipeline (2), and a liquid material collection tank connected to the return pipeline (5); The on-site sampling port (411) is provided with a sampling valve (413), the liquid material collecting tank is provided with a collecting tank valve (414), and the on-site sampling port (411) is located above the liquid material collecting tank.

4. The mobile tank truck sampling system according to claim 3 is characterized in that: The open branch (41) is further provided with a pressure relief branch (415) connected to the return material pipeline (5), the pressure relief branch (415) is connected to the liquid material collection tank, and the pressure relief branch (415) is provided with an air release valve (416).

5. The mobile tank truck sampling system according to claim 2, characterized in that: The closed branch (42) is provided with a sealed sampling bottle (421) and a bypass branch (422) connected in parallel therewith; The feed end of the sealed sampling bottle (421) is connected to the sampling pipeline (2) and is provided with a collecting valve (423), the discharge end is connected to the return pipeline (5) and is provided with a discharge valve (424), and the bypass branch (422) is provided with a return valve (425).

6. The mobile tank truck sampling system according to claim 1, characterized in that: The purge pipeline (6) is provided with a purge gas bottle (61), and a purge branch (62) and a material return branch (63) connected to the purge gas bottle (61); The purge gas cylinder (61) is provided with a gas cylinder valve (611), the purge branch (62) is connected to the sampling pipeline (2), and the material return branch (63) is connected to the material return pipeline (5).

7. The mobile tank truck sampling system according to claim 6, characterized in that: The purge branch (62) is provided with a gas phase balancing valve (621) and a purge pressure gauge (622) which are connected in sequence, and the gas phase balancing valve (621) is arranged close to the liquid phase quick interface (1); The material return branch (63) is connected to the material return pipeline (5), and the material return branch (63) is provided with a material return air source valve (631).

8. The mobile tank truck sampling system according to claim 1, characterized in that: The sampling pipeline (2) is further provided with a sampling liquid level meter (21), and the sampling liquid level meter (21) is located between the sampling discharge valve (3) and the sampling branch (4); The return material pipeline (5) is also provided with a return material level meter (53), and the return material level meter (53) is located between the return material valve (51) and the material recovery tank (52).

9. The mobile tanker sampling system according to claim 8, characterized in that: The return material pipeline (5) is further provided with a liquid trap (54), and the liquid trap (54) is located between the return material valve (51) and the return material level meter (53); The material recovery tank (52) is provided with a tank pressure gauge (55).

10. The mobile tank truck sampling system according to claim 1, characterized in that: It also includes a grounding branch (7), wherein the grounding branch (7) is provided with an electrostatic clip (71), a static electricity alarm (72), an on-site grounding terminal (73), and a human body static electricity release button (74) which are connected in sequence, and the static electricity clip (71) is connected to the tank truck grounding terminal.

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