Oil product automobile loading system with closed sampling function

Abstract

The utility model discloses an oil product automobile loading system with a closed sampling function. The problems that in the prior art, sampling efficiency is low, dirty oil cannot be collected in a centralized mode and the like are solved. Comprising an oil product loading liquid phase main pipeline and the like. Three stop valves are sequentially arranged on the oil product loading liquid phase main pipeline from the inlet end to the outlet end, and a pressure detection device is arranged between the first two stop valves; the oil product loading gas phase return pipeline is sequentially provided with a flame arrester, a pressure detection device and a stop valve from an inlet end to an outlet end; the inlet end of the safety device discharge pipeline is connected with the oil product loading liquid phase main pipeline between the second stop valve and the third stop valve; an inlet of the oil product emptying gathering pipeline is respectively connected with an outlet end of the safety device discharge pipeline, an outlet end of the manual emptying pipeline and an outlet end of the sampling emptying pipeline, one end of the gas phase pipe inert gas purging pipeline is connected with an inert gas supply source, and the other end of the gas phase pipe inert gas purging pipeline is connected to the upstream of a flame arrester of the oil product loading gas phase return pipeline.

Description

Technical Field

[0001] The utility model belongs to the field of oil storage and transportation, and specifically relates to an oil vehicle loading system with closed sampling. Background Art

[0002] In petrochemical companies, tank trucks are a common method of shipping oil products out of the factory. These products are temporarily stored in tank farms, then pressurized by loading pumps and loaded into tank trucks via loading cranes for transportation to end users.

[0003] Currently, most loading areas lack closed sampling facilities during the loading process, leading to quality disputes during product delivery and causing losses to production units. This is particularly true for products with high quality requirements, such as triphenyls (benzene, toluene, and xylene) and MTBE. Furthermore, since most loading areas lack closed sampling facilities, on-site sampling is often done manually using cylinders, resulting in low efficiency and difficulty in effectively handling the contaminated oil from empty cylinders, posing a safety hazard.

[0004] Patent CN209242667U discloses a fully automatic truck loading crane, comprising a liquid phase connector, a first horizontal liquid phase connector, a second horizontal liquid phase connector, a vertical liquid phase connector, a first lifting liquid phase connector, a second lifting liquid phase connector, a vertical pipe, a quick connector, a horizontal rotation mechanism, a rotating shaft, a slewing bearing seat, a drive shaft, a horizontal telescopic mechanism, a support rod, a lifting mechanism, a vertical guide mechanism, a support column, a control box, a transverse bracket, an electric slide, and a laser radar sensor. This utility model uses a laser radar sensor to detect the center position of the tank mouth, and then uses the control box to adjust the horizontal rotation mechanism, horizontal telescopic mechanism, and lifting mechanism to achieve precise alignment between the crane and the tank mouth of the tank truck. This technology does not involve enclosed sampling facilities during the oil loading process.

[0005] Patent CN213622370U discloses a quantitative loading system and intelligent vehicle loading system. This system manages and controls the entire logistics process, starting from vehicle dispatch before entering the site, through vehicle identification, on-site tracking and guidance, and finally, to loaded and departing the site. Each process, including vehicle entry, empty vehicle metering, queue guidance, quantitative loading, loaded vehicle metering, and vehicle exit, is unmanned. It is suitable for bulk material loading production processes in grain, metallurgy, coal, electricity, building materials, and chemicals. This technology also does not address the enclosed sampling facilities used during the oil loading process. Utility Model Content

[0006] The purpose of this utility model is to provide an oil truck loading system with closed sampling, so as to overcome the problems in the prior art that the oil truck loading area has no fixed closed sampling facilities, which leads to product disputes, low sampling efficiency and inability to collect waste oil in a centralized manner.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A fuel truck loading system with closed sampling, characterized in that: the fuel truck loading system with closed sampling includes a fuel truck loading liquid phase main pipeline, a fuel truck loading gas phase return pipeline, a fuel truck sampling pipeline, a sampling vent pipeline, a safety device discharge pipeline, a manual vent pipeline, a fuel truck vent collection pipeline, a liquid phase pipe inert gas purge pipeline and a gas phase pipe inert gas purge pipeline; the inlet end of the fuel truck loading liquid phase main pipeline is connected to the upstream transmission pipeline, and the outlet end is connected to the liquid phase filling pipeline of the tank truck and a pressure measuring device for the control unit, which is connected to the oil tanker's outlet, and a pressure measuring device for the control unit, which is connected to the oil tanker's outlet. The outlet end of the discharge pipeline, the outlet end of the manual discharge pipeline and the outlet end of the sampling discharge pipeline are connected, and the outlet end of the oil discharge summary pipeline is connected to the dirty oil collection system; one end of the liquid phase pipe inert gas purge pipeline is connected to the inert gas supply source, and the other end is connected to the downstream of the first shut-off valve of the liquid phase main pipeline of the oil loading vehicle and upstream of the connection point of the oil sampling pipeline; one end of the gas phase pipe inert gas purge pipeline is connected to the inert gas supply source, and the other end is connected to the upstream of the flame arrester of the gas phase return pipeline of the oil loading vehicle.

[0009] The utility model is further characterized in that: the first pneumatic emergency shut-off valve is used on the liquid phase main line for oil loading, which can remotely cut off the pipeline in an emergency to ensure system safety; the second shut-off valve is a quantitative loading shut-off valve; and the third shut-off valve is a manual shut-off valve.

[0010] The utility model is further characterized in that: both the oil sampling pipeline and the sampling and venting pipeline are provided with a shut-off valve, preferably a manual shut-off valve.

[0011] The utility model is further characterized in that: a shut-off valve is provided on the manual vent pipeline, preferably a manual shut-off valve; a safety relief device is provided on the safety device discharge pipeline, and shut-off valves are provided upstream and downstream of the safety relief device on the safety device discharge pipeline, preferably a manual shut-off valve.

[0012] The utility model is further characterized in that the inert gas purge pipeline of the gas phase pipe adopts two cut-off valves and an 8-shaped blind plate, and is connected to the inert gas supply source by a hose connector at the end.

[0013] The utility model is further characterized in that other communication interfaces are provided on the first shut-off valve on the liquid phase main line for oil loading.

[0014] A further technical feature of the present invention is that other communication interfaces are also provided on the shut-off valve on the gas phase return pipeline for oil loading.

[0015] A further technical feature of the utility model is that the oil vehicle loading system with closed sampling can be integrated by skid-mounting.

[0016] A further technical feature of the utility model is that the inert gas purge pipeline of the liquid phase pipe adopts two cut-off valves and an 8-shaped blind plate, and a hose connector is used at the end to connect with the inert gas supply source, which can realize the purge and replacement of the liquid phase main pipeline of the oil loading vehicle to ensure safety.

[0017] The utility model is further characterized in that a mass flow meter is further provided between the pressure detection device on the liquid phase main pipeline for oil loading and the second shut-off valve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) In conjunction with oil sampling and analysis equipment, it can realize online closed sampling and analysis of oil products, improve sampling efficiency, and reduce oil quality disputes;

[0020] 2) Cooperating with the waste oil collection system, it can realize the centralized collection and discharge of waste oil after oil sampling, thus reducing safety risks;

[0021] 3) The system of the utility model is fully functional. In addition to the above 1) and 2), it also has functions such as flow measurement, quantitative loading, pressure detection, overpressure relief, online sampling, purge replacement, and manual relief during the oil loading process;

[0022] 4) The system of the utility model can be integrated as a whole on a skid, and can be interlocked with other fault signals in the station (fire, crane oil overflow, static grounding fault, etc.) through the communication interface to achieve functions such as remote emergency shutdown, thereby improving the safety level of the oil loading process.

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments, but does not limit the scope of the present invention. Any modifications, equivalent replacements, and improvements made within the principles of the present invention shall be included in the scope of protection of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a structural schematic diagram of an oil vehicle loading system with closed sampling.

[0025] The reference numerals shown in the figures are:

[0026] a-oil loading liquid phase main pipeline, b-oil loading gas phase return pipeline, c-oil sampling pipeline, d-sampling vent pipeline, e-safety device release pipeline, f-manual vent pipeline, g-oil vent collection pipeline, h-liquid phase pipe inert gas purge pipeline, i-gas phase pipe inert gas purge pipeline, 1-pneumatic emergency shut-off valve, 2-pressure detection device, 3-mass flowmeter, 4-quantitative loading shut-off valve, 5-manual shut-off valve, 6-manual Shut-off valve, 7-8-shaped blind plate, 8-manual shut-off valve, 9-hose connector, 10-manual shut-off valve, 11-sampling facility, 12-manual shut-off valve, 13-manual shut-off valve, 14-safety relief device, 15-manual shut-off valve, 16-manual shut-off valve, 17-manual shut-off valve, 18-8-shaped blind plate, 19-manual shut-off valve, 20-hose connector, 21-flame arrester, 22-pressure detection device, 23-pneumatic emergency shut-off valve. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, the oil truck loading system with closed sampling includes an oil loading liquid phase main pipeline a, an oil loading gas phase return pipeline b, an oil sampling pipeline c, a sampling vent pipeline d, a safety device release pipeline e, a manual vent pipeline f, an oil vent collection pipeline g, a liquid phase pipe inert gas purge pipeline h and a gas phase pipe inert gas purge pipeline i.

[0029] The inlet end of the oil loading liquid phase main line a is connected to the upstream transmission pipeline, and the outlet end of the oil loading liquid phase main line a is connected to the liquid phase filling port of the tank truck. The oil loading liquid phase main line a is provided with three shut-off valves in sequence from the inlet end to the outlet end. Figure 1As shown, the first shut-off valve is a pneumatic emergency shut-off valve 1, the second shut-off valve is a quantitative loading shut-off valve 4, and the third shut-off valve is a manual shut-off valve 5. A pressure detection device 2 is provided between the first two shut-off valves; the inlet end of the oil loading gas phase return pipeline b is connected to the gas phase port of the automobile tank truck, and the outlet end of the oil loading gas phase return pipeline b is connected to the oil and gas processing facility. The oil loading gas phase return pipeline b is provided with a flame arrester 21, a pressure detection device 22 and a pneumatic emergency shut-off valve 23 in sequence from the inlet end to the outlet end; the inlet end of the oil sampling pipeline c is connected to the oil loading liquid phase main pipeline a between the first shut-off valve, i.e., the pneumatic emergency shut-off valve 1 and the pressure detection device 2, and the outlet of the oil sampling pipeline c is connected to the inlet of the sampling facility 11, and the inlet end of the safety device discharge pipeline e is connected to the oil loading liquid phase main pipeline a between the second shut-off valve (i.e., the quantitative loading shut-off valve 4) and the third shut-off valve (i.e., the manual shut-off valve 5). The outlet of the device discharge pipeline e is connected to the oil product venting collection pipeline g; the inlet of the sampling vent pipeline d is connected to the outlet of the sampling facility 11, and the outlet of the sampling vent pipeline d is connected to the oil product venting collection pipeline g; the inlet of the manual vent pipeline f is connected to the inlet end of the safety device discharge pipeline e, and the outlet of the manual vent pipeline f is connected to the oil product venting collection pipeline g; the inlet of the oil product venting collection pipeline g is respectively connected to the outlet end of the safety device discharge pipeline e, the outlet end of the manual vent pipeline f and the sampling vent pipeline d. The outlet end of the sample venting pipeline d is connected, and the outlet end of the oil venting collection pipeline g is connected to the dirty oil collection system; one end of the liquid phase pipe inert gas purge pipeline h is connected to the inert gas supply source, and one end is connected to the downstream of the first shut-off valve 1 of the oil loading liquid phase main pipeline a and upstream of the connection point of the oil sampling pipeline c; one end of the gas phase pipe inert gas purge pipeline i is connected to the inert gas supply source, and one end is connected to the upstream of the flame arrester 21 of the oil loading gas phase return pipeline b.

[0030] The oil loading liquid phase main line a is used for emergency shut-off, pressure detection, filling quality measurement and other functions during the oil loading process. The oil loading liquid phase main line a is respectively connected to the inlet of the liquid phase pipe inert gas purge line h, the inlet of the oil sampling line c and the inlet of the safety device discharge line e, and can realize functions such as online oil sampling, overpressure protection, manual discharge and inert gas purge replacement.

[0031] The oil loading gas return pipeline b is used for oil and gas collection, emergency shut-off, pressure detection, and backfire prevention during the oil loading process. A flame arrester 21, a pressure detection device 22, and a pneumatic emergency shut-off valve 23 are sequentially provided on the oil loading gas return pipeline b from the inlet end to the outlet end, and is connected to the inlet of the gas phase pipe inert gas purge pipeline i. The connection point is between the inlet end and the flame arrester 21, which can realize the purge and replacement of the pipeline.

[0032] The oil sampling pipeline c is used for online sampling of upstream oil products before loading.

[0033] The sampling and venting pipeline d is used for collecting the waste oil generated during the sampling process of the oil sampling facility in a closed manner.

[0034] The outlet of the oil sampling pipeline c is connected to the inlet of the sampling and venting pipeline d through the sampling facility 11, and the outlet of the sampling and venting pipeline d is connected to the oil venting collection pipeline g. A manual shut-off valve 10 is provided on the oil sampling pipeline c, and a manual shut-off valve 12 is provided on the sampling and venting pipeline d.

[0035] The safety device discharge pipeline e is used to discharge overpressure caused by thermal expansion of the liquid phase in the pipeline during the oil loading process or when the valves at both ends are closed, thereby protecting the system safety.

[0036] The manual venting line f is used for manual venting in system maintenance or emergency situations.

[0037] The oil product venting collection pipeline g is used to collect oil products discharged from the system due to overpressure relief, maintenance purge or emergency venting, and discharge them into the waste oil collection system.

[0038] The liquid phase pipe inert gas purge pipeline h is used to purge and replace the oil loading liquid phase main pipeline with inert gas after the oil loading is completed, so as to ensure the safety of operation.

[0039] The gas phase inert gas purge pipeline i is used to purge and replace the oil loading gas phase return pipeline with inert gas after the oil loading is completed, so as to ensure the safety of operation.

[0040] A pneumatic emergency shut-off valve 1 is provided at the inlet of the liquid phase main pipeline a for oil loading, which can remotely shut off the pipeline in an emergency to ensure system safety.

[0041] The oil loading liquid phase main line a is provided with a mass flow meter 3, a quantitative loading shut-off valve 4 and a manual shut-off valve 5. The accuracy of the mass flow meter 3 meets the requirements of trade transfer. The mass flow meter 3 can accumulate the loading mass flow. When the loading mass flow reaches the set value, the quantitative loading shut-off valve 4 is interlocked and cut off to realize the quantitative loading control function.

[0042] Manual shut-off valves are provided at the inlet of the oil sampling pipeline c and the outlet of the sampling venting pipeline d, and a safety relief device 14 is provided on the safety device relief pipeline e. When the pressure generated by the thermal expansion of the liquid phase in the pipeline during the oil loading process or when the valves at both ends are closed exceeds the set pressure of the safety relief device 14, the safety relief device 14 will release the overpressure to protect the safety of the system.

[0043] A manual shut-off valve 15 is provided at the outlet of the safety device discharge pipeline e and the safety discharge device 14, which is used to isolate the safety device 14 from the oil discharge collection pipeline g when the safety device 14 fails to be repaired. A manual shut-off valve 13 is also provided at the inlet of the safety device discharge pipeline e and the safety discharge device 14; a manual shut-off valve 16 is provided on the manual discharge pipeline f, which is used for manual discharge of oil in system maintenance or emergency situations.

[0044] The liquid phase pipe inert gas purge pipeline h is set downstream of the first shut-off valve 1 of the oil loading liquid phase main pipeline a. The pipeline adopts two shut-off valves (i.e., manual shut-off valves 6 and 8) plus an 8-shaped blind plate 7, and is connected to the inert gas supply source with a hose connector 9 at the end, which can realize the purge and replacement of the oil loading liquid phase main pipeline a to ensure safety.

[0045] The oil loading gas phase return pipeline b is provided with a pneumatic emergency shut-off valve 23, which can remotely shut off the pipeline in an emergency to ensure system safety.

[0046] A flame arrester 21 is installed near the tanker's gas phase port on the oil loading gas phase return line b to prevent backfire and ensure system safety. A pressure detection device 22 is also installed on the oil loading gas phase return line b to read the operating pressure in the line and promptly detect any blockage in the flame arrester 21.

[0047] The oil loading gas phase return pipeline b is provided with the gas phase pipe inert gas purge pipeline i upstream of the flame arrester 21 near the gas phase port of the automobile tanker. The pipeline adopts two shut-off valves (i.e., manual shut-off valves 17 and 19) plus an 8-shaped blind plate 18, and is connected to the inert gas supply source with a hose connector 20 at the end, so as to realize the purge and replacement of the oil loading gas phase return pipeline b and ensure safety.

[0048] Furthermore, the aforementioned oil truck loading system with closed sampling can be provided with other communication interfaces on the pneumatic emergency shut-off valve 1 and the pneumatic emergency shut-off valve 23, thereby enabling interlocking control with other fault signals in the station (fire, crane oil overflow, electrostatic grounding fault, etc.), realizing remote emergency shutdown and other functions, and improving the safety level of the system.

[0049] Furthermore, the aforementioned oil truck loading system with closed sampling connects the oil sampling pipeline c and the sampling and venting pipeline d to the oil sampling and analysis equipment 11 to realize online closed sampling and analysis.

[0050] Furthermore, the aforementioned oil truck loading system with closed sampling can be integrated as a whole on a skid to realize functions such as flow metering, quantitative loading, pressure detection, overpressure relief, online sampling, purging and replacement, and manual relief during the oil loading process.

[0051] The closed sampling process of this system is as follows: Close the quantitative loading shut-off valve 4 and manual shut-off valve 5 downstream of the mass flowmeter 3 on the oil loading liquid phase main line a, open the manual shut-off valve 10 on the oil sampling line c, and close the manual shut-off valve 12 on the sampling vent line d. The oil enters the sampling facility 11 through the oil loading liquid phase main line a and the oil sampling line c, where oil quality analysis can be performed. After sampling is complete, close the manual shut-off valve 10 on the oil sampling line c and open the manual shut-off valve 12 on the sampling vent line d. The waste oil enters the waste oil collection system through the sampling vent line d and the oil vent collection line g, achieving closed discharge. Once the oil passes sampling inspection, open the quantitative loading shut-off valve 4 and manual shut-off valve 5 downstream of the mass flowmeter 3 on the oil loading liquid phase main line a, and begin loading the oil.

[0052] The above description is merely a typical embodiment of the present invention and does not constitute any form of limitation to the present invention. Any changes or modifications made by any person skilled in the art using the above description without departing from the scope of the present invention should be considered equivalent examples of equivalent variations. Any equivalent variations made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention are within the scope of the present invention.

Claims

1. A fuel truck loading system with closed sampling, characterized by: The oil truck loading system with closed sampling includes an oil truck loading liquid phase main pipeline, an oil truck loading gas phase return pipeline, an oil truck sampling pipeline, a sampling vent pipeline, a safety device release pipeline, a manual vent pipeline, an oil truck vent collection pipeline, a liquid phase pipe inert gas purge pipeline and a gas phase pipe inert gas purge pipeline; the inlet end of the oil truck loading liquid phase main pipeline is connected to the upstream transmission pipeline, and the outlet end is connected to the liquid phase filling port of the truck tanker. Three shut-off valves are provided in sequence from end to outlet, and a pressure detection device is provided between the first two shut-off valves; the inlet end of the oil loading gas phase return pipeline is connected to the gas phase port of the automobile tank truck, and the outlet end is connected to the oil and gas processing facility. The oil loading gas phase return pipeline is provided with a flame arrester, a pressure detection device and a shut-off valve in sequence from the inlet end to the outlet end; the inlet end of the oil sampling pipeline is connected to the oil loading liquid phase main pipeline between the first shut-off valve and the pressure detection device, and the outlet is connected to the sampling facility inlet, the inlet end of the safety device discharge pipeline is connected to the oil loading liquid phase main pipeline between the second shut-off valve and the third shut-off valve, and the outlet is connected to the oil vent collection pipeline; the inlet of the sampling vent pipeline is connected to the outlet of the sampling facility, and the outlet is connected to the oil vent collection pipeline; the inlet of the manual vent pipeline is connected to the inlet end of the safety device discharge pipeline, and the outlet is connected to the oil vent collection pipeline; the inlet of the oil vent collection pipeline is respectively connected to the outlet end of the safety device discharge pipeline , the outlet end of the manual vent pipeline is connected to the outlet end of the sampling vent pipeline, and the outlet end of the oil vent summary pipeline is connected to the dirty oil collection system; one end of the liquid phase pipe inert gas purge pipeline is connected to the inert gas supply source, and one end is connected to the downstream of the first shut-off valve of the liquid phase main pipeline of the oil loading vehicle and upstream of the connection point of the oil sampling pipeline; one end of the gas phase pipe inert gas purge pipeline is connected to the inert gas supply source, and one end is connected to the upstream of the flame arrester of the gas phase return pipeline of the oil loading vehicle.

2. The oil vehicle loading system with closed sampling according to claim 1, characterized in that: The first shut-off valve on the liquid phase main line for oil loading is a pneumatic emergency shut-off valve, the third shut-off valve is a manual shut-off valve, and the second shut-off valve is a quantitative loading shut-off valve.

3. The oil vehicle loading system with closed sampling according to claim 1 is characterized in that: The oil sampling pipeline and the sampling and venting pipeline are both provided with cut-off valves.

4. The oil truck loading system with closed sampling according to claim 1, characterized in that: A shut-off valve is provided on the manual vent pipeline, a safety relief device is provided on the safety device discharge pipeline, and shut-off valves are provided on the upstream and downstream of the safety relief device on the safety device discharge pipeline.

5. The oil vehicle loading system with closed sampling according to claim 1 is characterized in that: The inert gas purge pipeline of the gas phase pipe adopts two cut-off valves and an 8-shaped blind plate, and is connected to the inert gas supply source with a hose connector at the end.

6. The oil vehicle loading system with closed sampling according to claim 1 is characterized in that: Other communication interfaces are also provided on the first shut-off valve on the liquid phase main line for oil loading.

7. The oil vehicle loading system with closed sampling according to claim 1, characterized in that: The shut-off valve on the oil loading gas phase return pipeline is also provided with other communication interfaces.

8. The oil vehicle loading system with closed sampling according to claim 1, characterized in that: The oil truck loading system with closed sampling adopts overall skid-mounted integration.

9. The oil vehicle loading system with closed sampling according to claim 1, characterized in that: The liquid phase pipe inert gas purge pipeline adopts two cut-off valves and an 8-shaped blind plate, and is connected to the inert gas supply source with a hose connector at the end.

10. The oil vehicle loading system with closed sampling according to claim 1, characterized in that: A mass flow meter is also provided between the pressure detection device on the oil loading liquid phase main line and the second shut-off valve.

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