Automatic closed sampler for tank car

Abstract

The utility model discloses an automatic closed sampler for a tank car, which comprises a feed pipe, a discharge pipe and an infrared spectrometer, one end of the feed pipe and one end of the discharge pipe are respectively provided with a quick connector which is connected with a discharge port and a feed port on the tank car, the other end of the feed pipe and the other end of the discharge pipe are respectively connected with a sample inlet valve and a sample return valve, and the infrared spectrometer is connected with a sample outlet of the tank car. A diaphragm booster pump is connected between the sample inlet valve and the sample return valve through a pipeline to form a circulation loop, the external spectrometer is arranged on the pipeline between the diaphragm booster pump and the sample return valve and used for sample detection, the diaphragm booster pump is further connected with a nitrogen pipe, and the nitrogen pipe, the diaphragm booster pump, the circulation valve and the recycling box form a cleaning pipeline. The detection device and the tank truck form a circulation loop, detection is carried out after circulation is carried out for a period of time, it is guaranteed that detected samples are uniform and representative, the cleaning pipeline is further arranged, residues in the pump body after detection can be cleaned, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tank truck sample detection equipment, in particular to an automatic sealed sampler for tank trucks. Background Technique

[0002] Tank trucks are important transportation tools in the process of chemical product transportation, and their functions and effects are very important. Whether in industries such as chemical engineering, food, and medicine, tank trucks can provide safe and efficient transportation solutions to ensure product quality.

[0003] Taking oil product transportation as an example, when the tank truck transports goods to the unloading place, in order to check the quality of the oil products, sampling quality inspection work before unloading will be carried out. At present, the sampling operation of liquid products is to open the unloading port, slowly discharge the materials, and then carry out the sampling operation after discharging for a period of time. After sampling, the discharged oil materials need to be recycled. Usually, the driver carries the oil to the top of the tank truck, opens the inspection port on the top of the tank, and pours the materials into the tank truck. This operation has relatively large safety risks. Pouring materials into the tank from the top of the tank truck flushes the gas phase space, which is likely to cause accidents such as electrostatic ignition and explosion of chemicals such as oil. At the same time, the driver carrying the oil to the top of the tank has the risk of falling from a height. In addition, during the sampling process, directly sampling at the unloading port of the tank truck, the samples are uneven. After a long time of transportation, there will also be a certain pressure in the tank, and oil spraying is likely to occur during sampling. The driver and operators are in long-term contact with dangerous chemical materials, which is extremely likely to cause occupational health hazards. This is the existing problem. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art, the utility model provides an automatic sealed sampler for tank trucks, which has the characteristics of safety, convenience, and accuracy, realizes precise sampling, ensures that the collected samples are all representative, and improves the existing problems.

[0005] The utility model is realized through the following technical solutions:

[0006] An automatic sealed sampler for tank trucks includes a feed pipe, a discharge pipe, and an infrared spectrometer. It is characterized in that: one ends of the feed pipe and the discharge pipe are both provided with quick connectors for connecting with the unloading port and the feed port on the tank truck. The other ends of the feed pipe and the discharge pipe are respectively connected with a sampling valve and a sample return valve. A diaphragm booster pump is connected between the sampling valve and the sample return valve through a pipeline to form a circulation loop; the infrared spectrometer is arranged on the pipeline between the diaphragm booster pump and the sample return valve for sample detection; a circulation valve is connected to the pipeline between the sample return valve and the oil product infrared spectrometer, and the circulation valve is connected with a recovery tank. The diaphragm booster pump is also connected with a nitrogen pipe, the nitrogen pipe is connected with a nitrogen inlet, and a nitrogen pressure regulating valve is arranged on the nitrogen pipe. The nitrogen pipe, the diaphragm booster pump, the circulation valve, and the recovery tank form a cleaning pipeline.

[0007] Further optimized, a sampling valve is connected to the pipeline between the diaphragm booster pump and the oil infrared spectrometer. The sampling valve is connected to a sampling bottle, and an adsorption tank a is connected to the sampling bottle.

[0008] Further optimized, a sight glass and a pressure transmitter are connected to the pipeline between the sampling valve and the diaphragm booster pump.

[0009] Further optimized, a liquid level probe is provided in the recovery tank, and a sewage discharge valve and an adsorption tank b are connected to the recovery tank.

[0010] Further optimized, exhaust pipes are provided on both the adsorption tank a and the adsorption tank b.

[0011] Further optimized, manual ball valves are provided at one ends of the feed pipe and the discharge pipe close to the quick connectors. A pressure relief valve is connected to one end of the discharge pipe close to the sample return valve, and the pressure relief valve is connected to the recovery tank through a pipeline.

[0012] Further optimized, it further includes a detection box. The injection valve, diaphragm booster pump, sampling valve, sampling bottle, sight glass, pressure transmitter, infrared spectrometer, sample return valve, circulation valve, recovery tank and pressure relief valve are all arranged in the detection box. An audible and visual alarm, a human body static eliminator, a display and a control panel are also provided on the detection box.

[0013] Further optimized, a hose reel is fixed on each side of the detection box, and the feed pipe and the discharge pipe are respectively arranged on the hose reels.

[0014] The beneficial effects of the present utility model are as follows:

[0015] This device is connected to the feed port and discharge port of the tanker through the feed pipe and the discharge pipe, forming a circulation loop between the detection device and the tanker. After circulating for a period of time, detection is carried out to ensure that the detection samples are uniform and all samples are representative. An infrared spectrometer is used for rapid detection, and a sampling valve is provided. When the rapid detection is unqualified, the material can be quantitatively sampled for secondary detection.

[0016] This device is provided with a cleaning pipeline, which can clean the residues in the pump body after detection, reduce waste, and ensure the accuracy of the next detection.

[0017] This device is integrated in the detection box. A hose reel is arranged on each side of the detection box, and the feed pipe and the discharge pipe are wound on the hose reels. It occupies a small area. During detection, the hose is pulled out and connected to the tanker, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present utility model.

[0019] Figure 2 This is a schematic diagram of the circulation process during sampling in the present utility model.

[0020] Figure 3 This is a schematic diagram of the process during cleaning in the present utility model.

[0021] In the figure: 1, feed pipe; 2, discharge pipe; 3, tank truck; 4, audible and visual alarm; 5, human body static eliminator; 6, quick connector; 7, manual ball valve; 8, hose reel; 9, infrared spectrometer; 10, display and control panel; 12, sampling valve; 13, diaphragm booster pump; 14, sampling valve; 15, sight glass; 16, pressure transmitter; 17, sampling bottle; 18, adsorption tank a; 21, sample return valve; 22, circulation valve; 23, pressure relief valve; 24, recovery box; 25, sewage discharge valve; 26, adsorption tank b; 27, probe; 31, discharge port; 32, feed port; 41, nitrogen inlet; 42, nitrogen pressure regulating valve. Specific embodiments

[0022] To clearly illustrate the technical features of this solution, the present utility model will be elaborated in detail below through specific embodiments and in conjunction with its attached drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0023] As Figures 1 - 3 shown, the present utility model provides an automatic sealed sampler for a tank truck, including a feed pipe 1, a discharge pipe 2, and an infrared spectrometer 9. One end of both the feed pipe and the discharge pipe is provided with a quick connector 6 for connecting to the discharge port 31 and the feed port 32 on the tank truck. The other ends of the feed pipe and the discharge pipe are respectively connected with a sampling valve 12 and a sample return valve 21. A diaphragm booster pump 13 is connected between the sampling valve 12 and the sample return valve 21 through a pipeline to form a circulation loop. Before detection, the diaphragm booster pump 13 circulates the material for 5 - 10 minutes to make the sample more uniform and the detection more accurate. Among them, the diaphragm booster pump 13 is selected, which will not generate electric sparks and will not overheat, reducing the danger during the sampling process.

[0024] The infrared spectrometer 9 is arranged on the pipeline between the diaphragm booster pump 13 and the sample return valve 21 for quickly detecting the sample.

[0025] As Figure 3As shown, a circulation valve 22 is connected to the pipeline between the sample return valve 21 and the infrared spectrometer 9. The circulation valve 22 is connected to a recovery tank 24. The diaphragm booster pump 13 is also connected to a nitrogen gas pipe, and the nitrogen gas pipe is connected to a nitrogen gas inlet 41. A nitrogen gas pressure regulating valve 42 is provided on the nitrogen gas pipe. The nitrogen gas pipe, the diaphragm booster pump 13, the circulation valve 22, and the recovery tank 24 form a cleaning pipeline. After the detection is completed, the pump body and the valve body are purged with nitrogen gas to clean the residues, reduce waste, and ensure the accuracy of the next detection.

[0026] As a preferred embodiment, a sampling valve 14 is connected to the pipeline between the diaphragm booster pump 13 and the infrared spectrometer 9. The sampling valve 14 is connected to a sampling bottle 17. An adsorption tank a18 is connected to the sampling bottle 17. When the quick inspection sample of the infrared spectrometer is unqualified, 500 ml of the sample can be taken from the sampling valve 14 and sent to the laboratory for precise detection. The adsorption tank a18 can absorb the waste gas discharged from the sampling bottle 17 to achieve environmental protection and zero emission.

[0027] As a preferred embodiment, a sight glass 15 and a pressure transmitter 16 are connected to the pipeline between the sampling valve 14 and the diaphragm booster pump 13. The sight glass 15 is used to observe the flow state of the material, and the pressure transmitter 16 monitors the pipeline pressure state to prevent material leakage. When the pressure is abnormal, an audible and visual alarm is given through the sound and light alarm.

[0028] As a preferred embodiment, a liquid level probe 27 is provided in the recovery tank 24. A drain valve 25 and an adsorption tank b26 are connected to the recovery tank 24. The recovery tank 24 is used to recover the material ejected by the pressure relief valve 23 and the material blown out during the nitrogen gas purging and cleaning, and store them. During the cleaning and purging, nitrogen gas is discharged from the adsorption tank b26 to adsorb the waste gas.

[0029] As a preferred embodiment, exhaust pipes are provided on both the adsorption tank a18 and the adsorption tank b26. The waste gas is discharged after being treated by the adsorption tank to achieve environmental protection and zero emission.

[0030] As a preferred embodiment, manual ball valves 7 are provided at one ends of the feed pipe and the discharge pipe close to the quick connector 6. After connecting to the tank truck, first check for leakage, and then slowly open the manual ball valves 7. One end of the discharge pipe close to the sample return valve 21 is connected to a pressure relief valve 23, and the pressure relief valve 23 is connected to the recovery tank 24 through a pipeline. First, the pressure is relieved and then the circulation is carried out.

[0031] As a preferred embodiment, it further includes a detection box. The injection valve 12, diaphragm booster pump 13, sampling valve 14, sampling bottle 17, sight glass 15, pressure transmitter 16, infrared spectrometer 9, sample return valve 21, circulation valve 22, recovery box 24 and pressure relief valve 23 are all integrally installed in the detection box. An audible and visual alarm 4, a human body static eliminator 5, a display and a control panel 10 are also provided on the detection box. Further, a hose reel 8 is fixed on each side of the detection box. The feed pipe and the discharge pipe are respectively arranged on the hose reel 8. The detection box can be fixedly installed. The tanker stops at the detection position, the feed pipe and the discharge pipe are pulled out, and after connection, the detection can be carried out.

[0032] Example:

[0033] The oil tanker is driven to the detection position, the feed pipe and the discharge pipe are pulled out, and are connected to the discharge port 31 and the feed port 32 of the tanker through the quick connectors 6. The valve on the discharge port 31 of the tanker is opened to observe whether there is leakage, and then the ball valve is slowly opened, and the pressure relief valve 23 is coordinated to relieve pressure.

[0034] The diaphragm booster pump 13 is started, and then the valve on the feed port 32 of the tanker is opened to circulate the oil in the tank. During this period, the flow state of the oil is observed through the sight glass 15. After circulating for 5 - 10 minutes, the injection valve 12, the sample return valve 21 and the diaphragm booster pump 13 are closed, and the oil is quickly inspected by the oil infrared spectrometer 9 to display in real time whether the oil is qualified. If the quick inspection of the oil is unqualified, 500 ml of oil is taken through the sampling valve 14 and the sampling bottle 17 and sent to the laboratory for further inspection.

[0035] After the detection is qualified or the sampling is completed, first open the injection valve 12, the sample return valve 21 and the diaphragm booster pump 13, then close the valve on the discharge port 31. After the diaphragm booster pump 13 evacuates and discharges all the oil in the tank, then close the valve on the feed port 32, and then close the diaphragm booster pump 13 to minimize the residue in the pipeline, pump body and valve body.

[0036] Finally, the quick connectors 6 are disconnected, the sample return valve 21 and the injection valve 12 are closed, and nitrogen purging and cleaning are carried out to blow the residual oil into the recovery box 24 to complete.

[0037] The details not described in the present utility model are all well-known techniques in the technical field. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. An automatic closed sampler for a tank truck, comprising a feed pipe, a discharge pipe and an infrared spectrometer, characterized in that: One end of the feed pipe and the discharge pipe is provided with a quick connector for connecting with the discharge port and the feed port on the tank truck, and the other ends of the feed pipe and the discharge pipe are respectively connected with an injection valve and a return valve, and a diaphragm booster pump is connected between the injection valve and the return valve through a pipeline to form a circulation loop; The infrared spectrometer is arranged on the pipeline between the diaphragm booster pump and the sample return valve and is used for sample detection; A circulation valve is connected to the pipeline between the return valve and the infrared spectrometer, and the circulation valve is connected to a recovery box. The diaphragm booster pump is also connected to a nitrogen pipe, and the nitrogen pipe is connected to a nitrogen inlet. A nitrogen pressure regulating valve is provided on the nitrogen pipe. The nitrogen pipe, the diaphragm booster pump, the circulation valve and the recovery box form a cleaning pipeline.

2. The automatic closed sampler for a tank truck according to claim 1, characterized in that: A sampling valve is connected to the pipeline between the diaphragm booster pump and the infrared spectrometer, the sampling valve is connected to a sampling bottle, and the sampling bottle is connected to an adsorption tank a.

3. The automatic closed sampler for a tank truck according to claim 2, characterized in that: A visual mirror and a pressure transmitter are connected on the pipeline between the sampling valve and the diaphragm booster pump.

4. The automatic closed sampler for a tank truck according to claim 3, characterized in that: A liquid level probe is arranged in the recovery box, and a sewage discharge valve and an adsorption tank b are connected to the recovery box.

5. The automatic closed sampler for a tank truck according to claim 2 or 4, characterized in that: The adsorption tank a and the adsorption tank b are both provided with exhaust pipes.

6. The automatic closed sampler for a tank truck according to claim 4, characterized in that: The ends of the feed pipe and the discharge pipe close to the quick connector are both provided with manual ball valves, and the end of the discharge pipe close to the return valve is connected to a pressure relief valve, and the pressure relief valve is connected to the recovery box through a pipeline.

7. The automatic closed sampler for a tank truck according to claim 6, characterized in that: It also includes a detection box, in which the injection valve, diaphragm booster pump, sampling valve, sampling bottle, visual mirror, pressure transmitter, infrared spectrometer, return valve, circulation valve, recovery box and pressure relief valve are all arranged. The detection box is also provided with an audible and visual alarm, a human body static electricity releaser, a display and a control panel.

8. The automatic closed sampler for a tank truck according to claim 7, characterized in that: A hose reel is fixed on each of the two sides of the detection box, and the feed pipe and the discharge pipe are respectively arranged on the hose reel.

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