Pipeline crude oil on-line metering and sampling device

Abstract

The utility model discloses a pipeline crude oil on-line metering and sampling device which comprises a scraper flowmeter, a temperature detector, a pressure detector, a camera, a sampler and a sample storage device, a crude oil conveying pipe is provided with the scraper flowmeter, the temperature detector and the pressure detector, the camera faces the scraper flowmeter, a sampling opening is formed in the side face of the crude oil conveying pipe, and the sample storage device is connected with the sample storage device. The sampler is arranged at the sampling port; and an oil discharge pipe is arranged at the bottom of the sampler. Parameters required by crude oil metering are integrated and are automatically stored after being matched with sampling, meter display data, temperature data and pressure data of the flowmeter are obtained during sampling and storage, manual reading and manual recording are not needed, and remote monitoring can be achieved; and for the sample storage device, samples taken at different time can be continuously and automatically stored, repeated manual operation is not needed, and different inspection and experiment requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of crude oil quality monitoring technology, specifically relating to an online metering and sampling device for pipeline crude oil. Background Technology

[0002] Pipeline crude oil is typically measured by volume. However, crude oil volume varies with temperature and pressure, requiring correction to obtain the actual volume. In practice, workers read the flow meter on the crude oil pipeline, record the displayed flow rate, and simultaneously take a sample. The sample is then sent for density testing, and a standard density value is calculated. Based on the standard density value and the recorded temperature and pressure data, a correction factor is calculated, and the actual crude oil volume is obtained after correction. Traditional methods require manual on-site meter reading, which is inconvenient. Furthermore, workers must be present at the sampler to collect oil samples. To obtain accurate data to support relevant monitoring and research, the demand for continuous measurement and sampling is increasing, necessitating repeated manual operations, which is time-consuming and labor-intensive. Currently, there is no equipment for continuous automated sampling of pipeline crude oil. Therefore, developing a highly automated online pipeline crude oil metering and sampling device is essential. Utility Model Content

[0003] To address the technical problems of time-consuming and labor-intensive operation, the purpose of this utility model is to provide an online metering and sampling device for pipeline crude oil, which improves the level of automation, reduces labor intensity, and enhances the monitoring efficiency of pipeline crude oil.

[0004] The purpose of this utility model is achieved as follows: it includes a scraper flow meter, a temperature detector, a pressure detector, a camera, a sampler, and a sample storage device. The crude oil conveying pipe is equipped with a scraper flow meter, a temperature detector, and a pressure detector. The camera faces the scraper flow meter. The crude oil conveying pipe has a sampling port on its side. The sampler is located at the sampling port. The bottom of the sampler has an oil discharge pipe.

[0005] The sample storage device includes a shell, a lifter, a lifting platform, a rotating platform, and a sampling bottle. The shell is located below the sampler, and the oil drain pipe passes through the shell from top to bottom. The lifter is located at the bottom of the shell, and the lifter has a lifting platform. The lifting platform has a rotating platform, and the rotating platform has a rotating drive motor at the bottom center. Along the circumferential direction, several equally spaced grooves are set on the rotating platform, and a sampling bottle is embedded in one groove. The top cap of the sampling bottle is made of rubber or silicone, and the cap has a cross-shaped opening in the center. When the sampling bottle is rotated to the position below the oil drain pipe, the oil drain pipe corresponds to the cross-shaped opening of the cap.

[0006] Scraper flow meters are commonly used in the pipeline transportation of crude oil. They utilize the pressure difference generated between the inlet and outlet of the flow meter to drive the scraper and rotor to rotate, thereby measuring the total amount of crude oil flowing through the crude oil transportation pipeline. Scraper flow meters have a mechanical structure and require manual reading to obtain flow data. Temperature detectors and pressure detectors are also commonly used detection devices in this field.

[0007] The lifting device can be a small cylinder; the rotary drive motor is a geared motor; if the rotating platform is large, pulleys can be added below the rotating platform to enhance rotational stability. These are all well-known technologies in the field; as for the number of sampling bottles, it can be flexibly determined according to the sampling requirements.

[0008] For the sample storage casing, a door can be installed on the side of the casing. By opening the door, the sampling bottle can be taken out or put in. A rotating platform can also be used to rotate the sampling bottle to the vicinity of the door for easy access.

[0009] Preferably, a proximity sensor is provided on the side wall of the outer casing corresponding to the oil drain pipe. The proximity sensor cooperates with the sampling bottle. The controller is electrically connected to the proximity sensor, the lifting device, and the rotary drive motor respectively. The controller uses common control devices in the art, such as a PLC controller. When the sampling bottle is detected by the proximity sensor, the controller controls the lifting device and the rotary drive motor to work to achieve logic control. The connection relationship between the controller and the proximity sensor, the lifting device, and the rotary drive motor, as well as the control process, are all well-known technologies in the art. When the controller is a PLC controller, its logic control process is implemented by conventional PLC programming technology to make the lifting device and the rotary drive motor work sequentially. The proximity sensor is used to detect whether the sampling bottle has reached the designated position (below the oil drain pipe).

[0010] Preferably, the sampler includes a cylinder, a push rod, a plug, a screw, a nut, a motor, and a slide rail. The end of the cylinder is fixed to the sampling port. The push rod is laterally disposed inside the cylinder, and the push rod body is in close contact with the inner wall of the cylinder. The upper and lower sides of the push rod respectively protrude to form limiting bosses. A guide groove is formed on the inner wall of the cylinder corresponding to the limiting boss. The limiting boss is embedded in the guide groove and can move back and forth along the guide groove. The front end of the plug has a concave arc surface, and the concave arc surface fits against the sampling port. The concave arc surface and the inner wall of the crude oil delivery pipe together form the inner wall of the pipe. The plug gradually narrows at the rear, and the rear end of the plug is fixedly connected to the front end of the push rod. The side of the plug is in close contact with the corresponding front end of the cylinder to form a seal. The inner wall of the cylinder corresponding to the front end of the push rod is concave to form an oil passage area. The front end of the oil passage area corresponds to the rear end of the plug. An oil drain pipe is provided at the lowest point of the oil passage area. The end of the oil drain pipe extends longitudinally out of the cylinder. A nut is fixedly provided at the rear end of the cylinder. The screw and the nut are threadedly engaged, and the front end of the screw is rotatably connected to the rear end of the push rod. The motor power output part is connected to the screw. The bottom of the motor is provided with a slide rail, and the motor can slide back and forth on the slide rail.

[0011] It should be noted that: common dynamic seals in the art, such as reciprocating dynamic seals, can also be installed between the push rod and the cylinder to enhance the sealing performance between the push rod and the cylinder. As for the installation method and connection structure of the dynamic seals, they are existing technologies in the art and will not be described in detail. The sealing surface between the side of the plug and the front end of the cylinder is smooth and flat. The plug moves backward under the drive of the screw and makes close contact with the cylinder. Its sealing effect can prevent crude oil from seeping out.

[0012] Preferably, the temperature detector, pressure detector, and camera are connected to the data center via a communication network. The temperature detector data, pressure detector data, and camera photos are transmitted using conventional network communication technologies (such as 2G, 3G, 4G, 5G, or dedicated networks). The data center includes a data storage device to store the aforementioned data, enabling staff to remotely obtain the data required for pipeline crude oil measurement. It should be noted that the data center only stores the data and does not process it. Data processing can be done manually or using known computer programs for volume conversion in the field.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model integrates the parameters required for crude oil measurement and automatically stores them after sampling. During sampling and storage, it acquires flow meter display data, temperature data, and pressure data, eliminating the need for manual reading and recording, and enabling remote monitoring. For the sample storage device, it can continuously and automatically store samples taken at different times, eliminating the need for repeated manual operation and meeting different testing and experimental needs.

[0015] 2. The sampler of this utility model moves the plug by a motor, which can not only block the sampling port without affecting the normal transportation of crude oil, but also automatically complete the sampling when sampling is required. The sample is discharged through the oil area, which is very convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the sample storage device;

[0018] Figure 3 This is a top view of the bottle cap's structure.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the sampler;

[0020] Figure 5 for Figure 4 A schematic diagram showing the usage status of the middle plug during sampling after it has been pushed out;

[0021] In the diagram: 1-Scraper flow meter, 2-Temperature detector, 3-Pressure detector, 4-Camera, 5-Sampler, 501-Cylinder, 502-Push rod, 503-Plug, 504-Screw, 505-Nut, 506-Motor, 507-Slide rail, 508-Guide groove, 509-Limiting boss, 510-Oil passage area, 6-Sample storage, 601-Outer shell, 602-Lifter, 603-Lifting platform, 604-Rotating platform, 605-Sampling bottle, 606-Bottle cap, 607-Proximity sensor, 7-Crude oil delivery pipe, 8-Oil drain pipe. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any modifications or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0023] Example 1

[0024] As attached Figures 1-3 The online metering and sampling device for pipeline crude oil shown in this embodiment includes a scraper flow meter 1, a temperature detector 2, a pressure detector 3, a camera 4, a sampler 5, and a sample storage device 6. The crude oil delivery pipe 7 is equipped with the scraper flow meter 1, temperature detector 2, and pressure detector 3. The camera 4 faces the scraper flow meter 1. A sampling port is provided on the side of the crude oil delivery pipe 7. The sampler 5 is located at the sampling port, and an oil discharge pipe 8 is provided at the bottom of the sampler 5. The temperature detector 2, pressure detector 3, and camera 4 are respectively connected to a data center through a communication network.

[0025] The sample storage device 6 includes a housing 601, a lifter 602, a lifting platform 603, a rotating platform 604, and a sampling bottle 605. The housing 601 is located below the sampler 5. The oil drain pipe 8 passes through the housing 601 from top to bottom. The lifter 602 is located at the bottom of the housing 601. The lifter 602 is equipped with the lifting platform 603. The lifting platform 603 is equipped with the rotating platform 604. The rotating platform 604 has a rotating drive motor at the bottom center. Along the circumferential direction, several equally spaced grooves are set on the rotating platform 604. A sampling bottle 605 is embedded in one groove. The bottle cap 606 of the sampling bottle 605 is made of rubber or silicone. The bottle cap 606 has a cross-shaped opening at the center. When the sampling bottle 605 is rotated to the position below the oil drain pipe 8, the oil drain pipe 8 corresponds to the cross-shaped opening of the bottle cap 606.

[0026] Example 2

[0027] The online metering and sampling device for pipeline crude oil in this embodiment is based on Embodiment 1. The difference from Embodiment 1 is that a proximity sensor 607 is provided on the side wall of the outer shell 601 corresponding to the oil drain pipe 8. The proximity sensor 607 is inductively coupled with the sampling bottle 605. The controller is electrically connected to the proximity sensor 607, the lifting device 602, and the rotary drive motor respectively.

[0028] Example 3

[0029] As attached Figure 4 ~Appendix Figure 5 As shown, the online metering and sampling device for pipeline crude oil in this embodiment is based on Embodiment 2, but differs from Embodiment 2 in that: the sampler 5 includes a cylinder 501, a push rod 502, a plug 503, a screw 504, a nut 505, a motor 506, and a slide rail 507. The end of the cylinder 501 is fixed to the sampling port. The push rod 502 is laterally disposed inside the cylinder 501, and the rod body of the push rod 502 is in close contact with the inner wall of the cylinder 501. A dynamic seal is provided between the push rod and the cylinder. The upper and lower sides of the push rod 502 respectively protrude to form limiting bosses 509. The inner wall of the cylinder 501 corresponding to the limiting bosses 509 is provided with a guide groove 508. The limiting bosses 509 are embedded in the guide grooves 508 and can move back and forth along the guide grooves 508. The front end of the plug 503 is a concave arc surface, and the concave arc surface fits against the sampling port. The concave arc surface and the inner wall of the crude oil conveying pipe 7 together form the inner wall of the pipe. The rear part of the plug 503 gradually narrows, and the rear end of the plug 503 is fixedly connected to the front end of the push rod 502. The side of the plug 503 is in close contact with the front end of the corresponding cylinder 501 to form a seal. The inner wall of the cylinder 501 corresponding to the front end of the push rod 502 is concave to form an oil passage area 510. The front end of the oil passage area 510 corresponds to the rear part of the plug 503. An oil drain pipe 8 is provided at the lowest point of the oil passage area 510. The end of the oil drain pipe 8 extends longitudinally out of the cylinder 501. A nut 505 is fixedly provided at the rear end of the cylinder 501. The screw 504 is threadedly engaged with the nut 505, and the front end of the screw 504 is rotatably connected to the rear end of the push rod 502. The power output part of the motor 506 is connected to the screw 504. A slide rail 507 is provided at the bottom of the motor 506, and the motor 506 can slide back and forth on the slide rail 507.

[0030] When the sampler 5 is working, the motor 506 is started first, the screw 504 rotates and pushes the push rod 502 and the plug 503 forward. At the same time, the motor 506 slides along the slide rail 507. The oil sample enters the oil passage zone 510 through the gap between the plug 503 and the sampling port, and is then discharged through the oil drain pipe 8. When sampling stops, the screw 504 reverses, the push rod 502 and the plug 503 move backward, and the plug 503 re-makes tight contact with the front end of the corresponding cylinder 501, forming a seal again. The limiting boss 509 is used for limiting and cooperates with the guide slide groove 508 to make the push rod 502 move back and forth stably.

[0031] The working principle and process of this utility model are as follows: the scraper flow meter 1 is used to acquire pipeline crude oil flow data, the camera 4 takes pictures of the display data of the scraper flow meter 1, the temperature detector 2 is used to acquire crude oil temperature data, and the pressure detector 3 is used to acquire pressure data; the display data photos, temperature data, and pressure data are sent to the data center and stored through the communication network; each time the sample taken by the sampler 5 is discharged into the sample storage 6 through the oil discharge pipe 8 for storage.

[0032] In the sample storage 6, a rotary motor drives a rotary platform 604 to rotate, causing the sampling bottle 605 to be filled with samples to be rotated below the oil drain pipe 8. The lifting device 602 drives the lifting platform 603 to rise, that is, the sampling bottle 605 moves upward, and the oil drain pipe 8 is inserted into the sampling bottle 605 through the cross-shaped opening of the top cap 606. Then, the sampler 5 takes a sample, and the oil sample enters the sampling bottle 605 through the oil drain pipe 8. After the sample is taken, the sampling bottle 605 descends. The oil drain pipe 8 leaves the sampling bottle 605, and the cross-shaped opening elastically returns to its original position. The rotary platform 604 is rotated, and the next empty bottle moves to the bottom of the oil drain pipe 8 to wait for the sample to be filled. The operation is repeated to complete the filling of all sampling bottles 605. At the same time as each sampling, the display photo, temperature data, and pressure data of the scraper flow meter 1 are recorded to make them correspond to each other. The sampling bottles can be marked in advance to distinguish the sampling at different times.

Claims

1. An online metering and sampling device for pipeline crude oil, comprising a scraper flow meter (1), a temperature detector (2), a pressure detector (3), a camera (4), a sampler (5), and a sample storage device (6), characterized in that... The crude oil conveying pipe (7) is equipped with a scraper flow meter (1), a temperature detector (2), and a pressure detector (3). The camera (4) faces the scraper flow meter (1). The crude oil conveying pipe (7) has a sampling port on its side. The sampler (5) is located at the sampling port. The sampler (5) has an oil drain pipe (8) at its bottom. The sample storage device (6) includes a housing (601), a lifter (602), a lifting platform (603), a rotating platform (604), and a sampling bottle (605). The housing (601) is located below the sampler (5), and the oil drain pipe (8) extends from top to bottom into the housing (601). The lifter (602) is located at the bottom inside the housing (601), and the lifter (602) is equipped with the lifting platform (603). The lifting platform (603) is equipped with the rotating platform (605). 04), and a rotary drive motor is provided at the bottom center of the rotating platform (604). Along the circumferential direction, several equally spaced grooves are provided on the rotating platform (604). A sampling bottle (605) is embedded in one groove. The bottle cap (606) at the top of the sampling bottle (605) is made of rubber or silicone. The bottle cap (606) has a cross-shaped opening at the center. When the sampling bottle (605) rotates to the bottom of the oil drain pipe (8), the oil drain pipe (8) corresponds to the cross-shaped opening of the bottle cap (606).

2. The pipeline crude oil online metering and sampling device according to claim 1, characterized in that... The side wall of the outer shell (601) corresponding to the oil drain pipe (8) is provided with a proximity sensor (607). The proximity sensor (607) is in sensing cooperation with the sampling bottle (605). The controller is electrically connected to the proximity sensor (607), the lifting device (602), and the rotary drive motor respectively.

3. The pipeline crude oil online metering and sampling device according to claim 1, characterized in that... The sampler (5) includes a cylinder (501), a push rod (502), a plug (503), a screw (504), a nut (505), a motor (506), and a slide rail (507). The end of the cylinder (501) is fixed to the sampling port. The push rod (502) is arranged laterally inside the cylinder (501), and the rod body of the push rod (502) is in close contact with the inner wall of the cylinder (501). The upper and lower sides of the push rod (502) are respectively protruding to form A limiting boss (509) is provided, and a guide groove (508) is provided on the inner wall of the corresponding cylinder (501). The limiting boss (509) is embedded in the guide groove (508), and the limiting boss (509) can move back and forth along the guide groove (508). The front end of the plug (503) is a concave arc surface, and the concave arc surface fits against the sampling port. The concave arc surface and the inner wall of the crude oil conveying pipe (7) together form the inner wall of the pipe. The plug (509) is a guide groove (508) provided. 3) The rear portion gradually narrows, and the rear end of the plug (503) is fixedly connected to the front end of the push rod (502). The side of the plug (503) is in close contact with the front end of the corresponding cylinder (501) to form a seal. The inner wall of the cylinder (501) corresponding to the front end of the push rod (502) is concave to form an oil passage area (510). The front end of the oil passage area (510) corresponds to the rear portion of the plug (503). An oil drain pipe (8) is provided at the lowest point of the oil passage area (510). The end of the screw rod (504) extends longitudinally through the cylinder (501). A nut (505) is fixedly provided at the rear end of the cylinder (501). The screw rod (504) is threadedly engaged with the nut (505), and the front end of the screw rod (504) is rotatably connected to the rear end of the push rod (502). The power output part of the motor (506) is connected to the screw rod (504). The bottom of the motor (506) is provided with a slide rail (507), and the motor (506) can slide back and forth on the slide rail (507).

4. The pipeline crude oil online metering and sampling device according to claim 1, characterized in that... The temperature detector (2), pressure detector (3), and camera (4) are connected to the data center via a communication network.

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