Device for detecting water content of crude oil in crude oil storage tank in oil field

Abstract

The invention relates to the technical field of detection equipment, and discloses a device for detecting the water content of crude oil in an oil field crude oil storage tank, which comprises a sampling port arranged at the top of the crude oil storage tank, a sample groove is arranged at the sampling port, a detection mechanism is arranged at the sample groove, and a sampling pipe is slidably arranged at the sampling port through a limiting mechanism. The sampling device further comprises a driving mechanism which is arranged at the sampling port and drives the sampling pipe to move up and down, a distributed uniform sampling mechanism is arranged at the bottom of the sampling pipe, and a telescopic sample placing door is arranged on the sampling pipe at the upper part of the distributed uniform sampling mechanism; and a linkage mechanism for driving the distributed uniform sampling mechanism and the telescopic lofting door to act is arranged in the sampling pipe. The device has the beneficial effects that the process that a worker climbs to the top of the storage tank can be omitted, the detection convenience is improved, the personnel risk is reduced, meanwhile, large-area sampling can be carried out, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a device for detecting the water content of crude oil in a crude oil storage tank in an oil field. Background Art

[0002] The water content of crude oil is an important indicator in the process of crude oil extraction, transportation and processing, and directly affects the quality and price of crude oil. Before or during storage of crude oil, the water content of crude oil needs to be tested multiple times at certain intervals to determine whether the drainage volume and water content meet the standards.

[0003] In the prior art, when working on shifts, the staff of each shift needs to confirm and test the moisture content data. During the testing process, the staff needs to climb to the sampling port on the top of the storage tank, use the sampling device to take samples, and then use the detection instrument to test. The staff needs to climb multiple times, which is inconvenient and dangerous. The detection efficiency is not high, and the sampling is only point sampling. The detection accuracy also needs to be improved. Summary of the invention

[0004] The present invention proposes a device for detecting the water content of crude oil in an oil field crude oil storage tank, which can save workers from climbing to the top of the storage tank, thereby improving the convenience of detection and reducing personnel risks. At the same time, it can uniformly sample a large area, thereby improving the accuracy of detection.

[0005] To this end, the technical solution adopted by the present invention is as follows: a device for detecting the water content of crude oil in an oil field crude oil storage tank, comprising a sampling port arranged at the top of the crude oil storage tank, a sample slot being arranged at the sampling port, a detection mechanism being arranged at the sample slot, a sampling tube being slidably arranged at the sampling port through a limiting mechanism, and also comprising a driving mechanism arranged at the sampling port for driving the sampling tube to move up and down, a distributed uniform sampling mechanism being arranged at the bottom of the sampling tube, a telescopic sampling door being arranged on the sampling tube at the upper part of the distributed uniform sampling mechanism, and a linkage mechanism for driving the distributed uniform sampling mechanism and the telescopic sampling door to move is arranged inside the sampling tube.

[0006] By adopting the above technical solution: the sampling port is used for sampling, and a sampling tube is slidably arranged inside the sampling port through a limiting mechanism. The sampling tube extends to the inside of the crude oil storage tank. The sampling tube can be moved up and down by the driving mechanism. The dispersed uniform sampling mechanism at the bottom can simultaneously perform multi-point or multi-area sampling and mix the samples into the sampling tube under the drive of the linkage mechanism, and then return to its original position by the driving mechanism. When the telescopic sampling door reaches the outside of the sampling port, the telescopic sampling door can be opened by the linkage mechanism, and the sample enters the sample slot and can be tested by the detection mechanism. There is no need for workers to climb to the top of the tank to take samples. Since multiple areas are sampled and tested at the same time, the detection accuracy is also improved.

[0007] Optionally, the sample slot is arranged on one side of the sampling port, and the two are connected by a guide plate with a flow slot, and the flow slot is directly opposite to the telescopic sample lofting door in the vertical direction.

[0008] By adopting the above technical solution: when the telescopic sample-laying door is driven by the linkage mechanism and is in an open state, the sample can flow into the sample tank through the flow slot for detection.

[0009] Optionally, the detection mechanism includes a microwave detection component disposed in the sample slot, the microwave detection component includes a microwave signal generator, a microwave signal receiver and a signal processing unit, and the microwave signal receiver is communicatively connected to the processing unit.

[0010] By adopting the above technical solution: the microwave signal generator generates a microwave signal and inputs it into the sample tank. The microwave signal is received by the microwave signal receiver after passing through the crude oil sample and output to the processing unit for processing, and finally the water content of the crude oil is calculated.

[0011] Optionally, the limiting mechanism comprises a limiting sleeve arranged at the lower side of the sampling port of the crude oil storage tank, the limiting sleeve is provided with a limiting slide groove, the sampling tube is provided with a limiting slide rail, and the limiting slide rail is slidably arranged inside the limiting slide groove.

[0012] By adopting the above technical solution: through the cooperation of the limiting slide rail and the limiting slide groove, and the limiting effect of the limiting sleeve, the sampling tube can be limited so that the sampling tube can only move up and down to prevent it from rotating.

[0013] Optionally, the driving mechanism includes a driving motor disposed at the sampling port, a driving gear is disposed on an output shaft of the driving motor, and a rack matched with the driving gear is disposed on the sampling tube.

[0014] By adopting the above technical solution: the driving motor can drive the driving gear to rotate, so that the driving gear can drive the sampling tube to move up and down through the rack.

[0015] Optionally, the distributed uniform sampling mechanism includes a plurality of sampling cavities connected to the sampling tube, a sampling strip groove is provided at the lower portion of the sampling cavity, a swing plate affixed to the sampling strip groove is provided inside the sampling cavity, and the sampling strip groove is inclined.

[0016] By adopting the above technical solution: before sampling, the swing plate covers the sampling groove. When the sampling tube descends to the specified depth, the linkage mechanism can simultaneously drive multiple swing plates to rotate, thereby gradually leaking out the sampling groove. The crude oil enters the sampling cavity through the sampling groove under pressure, and then enters the sampling tube. The sampling groove is in an inclined state. When the swing plate rotates, the end of the sampling groove away from the sampling tube is opened first, and then the sampling groove is gradually opened. The crude oil away from the sampling tube can enter the sampling cavity first, preventing the crude oil near the sampling tube from quickly filling the sampling cavity, resulting in more concentrated sampling, resulting in low detection accuracy and universality. The above arrangement can be evenly sampled, further improving the detection accuracy.

[0017] Optionally, the linkage mechanism includes a swing component that drives the multiple swing plates to swing synchronously and an opening component that drives the telescopic lofting door to open, wherein the telescopic lofting door is slidably arranged inside the tube wall of the sampling tube through an elastic member.

[0018] By adopting the above technical solution: the swing component can drive multiple swing plates to rotate synchronously, the opening component can push the telescopic sampling door to retract, and the crude oil sample can flow out into the sample tank. When the opening component is not in contact, the telescopic sampling door can be reset for the next sampling.

[0019] Optionally, the swing assembly includes a swing motor arranged at the upper end of the sampling tube, the swing motor is connected to a transmission rod, a rotating disk is provided at the lower part of the transmission rod, and a plurality of swing plates are connected to the rotating disk.

[0020] By adopting the above technical solution: the swing motor can drive the transmission rod to rotate, and the rotating disk at the lower part of the transmission rod rotates accordingly, thereby driving the swing plate to swing.

[0021] Optionally, the opening assembly includes a swinging piece arranged on the transmission rod, and the telescopic lofting door is provided with a hook-shaped actuated member.

[0022] By adopting the above technical solution: when sampling is completed, when the telescopic lofting door reaches the guide plate, the swing motor rotates in the direction, and the swing piece can drive the hook-shaped actuated member to move, thereby pushing the telescopic lofting door to open for lofting.

[0023] Optionally, the processing unit is communicatively connected to a display control terminal, an oil return valve connected to a crude oil storage tank is provided at the bottom of the sample tank, and a plurality of sample mixing pieces are provided on the inner side of the lower portion of the sampling tube.

[0024] By adopting the above technical solution: through the display control terminal, the staff does not need to climb to the top of the tank, and can complete the sampling and testing on the ground. At the same time, the display control terminal can also control the movement of the drive motor and the swing motor to complete the sampling.

[0025] The working principle and beneficial effects of the present invention are: 1. The sampling port in the present invention is used for sampling, and a sampling tube is slidably arranged inside the sampling port through a limiting mechanism. The sampling tube extends to the inside of the crude oil storage tank. The sampling tube can be moved up and down by the driving mechanism. The dispersed uniform sampling mechanism at the bottom can simultaneously perform multi-point or multi-region sampling and mix the samples into the sampling tube under the driving of the linkage mechanism, and then return to its original position by the driving mechanism. When the telescopic sampling door reaches the outside of the sampling port, the telescopic sampling door can be opened by the linkage mechanism, and the sample enters the sample slot and can be tested by the detection mechanism. There is no need for workers to climb to the top of the tank to take samples. Since multiple areas are sampled and tested at the same time, the detection accuracy is also improved.

[0026] 2. In the present invention, before sampling is performed, the swing plate covers the sampling groove. When the sampling tube descends to a specified depth, the linkage mechanism can simultaneously drive multiple swing plates to rotate, thereby gradually leaking out the sampling groove. The crude oil enters the sampling cavity through the sampling groove under pressure, and then enters the sampling tube. The sampling groove is in an inclined state. When the swing plate rotates, the end of the sampling groove away from the sampling tube is opened first, and then the sampling groove is gradually opened. The crude oil away from the sampling tube can enter the sampling cavity first, preventing the crude oil near the sampling tube from quickly filling the sampling cavity, resulting in more concentrated sampling, resulting in low detection accuracy and universality. The above arrangement can be evenly sampled, further improving the detection accuracy.

[0027] 3. After sampling is completed, when the telescopic lofting door reaches the guide plate, the swing plate can drive the hook-shaped actuator to move by rotating in the direction of the swing motor, thereby pushing the telescopic lofting door to open for lofting. Through the display control terminal, the staff does not need to climb to the top of the tank, and can complete the sampling and testing on the ground. At the same time, the display control terminal can also control the action of the drive motor and the swing motor to complete the sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Figure 1 A schematic diagram of the overall structure of one side of an embodiment of the present invention; Figure 2 For the embodiment of the present invention Figure 1 Schematic diagram of the opposite side structure; Figure 3 This is a schematic diagram of the top view of the crude oil storage tank according to an embodiment of the present invention; Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the enlarged structure at the sampling port; Figure 5A bottom view of a distributed uniform sampling mechanism according to an embodiment of the present invention; Figure 6 Schematic diagram of the structure of the mixed sample sheet according to an embodiment of the present invention.

[0030] In the figure: 100, crude oil storage tank; 200, sampling port; 210, flow slot; 220, guide plate; 300, sample slot; 400, detection mechanism; 410, microwave signal generator; 420, microwave signal receiver; 500, limit mechanism; 510, limit sleeve; 520, limit slide; 530, limit slide rail; 600, sampling tube; 610, telescopic sample door; 620, sample mixing sheet; 700, driving mechanism; 710, driving motor; 720, driving gear; 730, rack; 800, distributed uniform sampling mechanism; 810, sampling cavity; 820, sampling strip slot; 830, swing plate; 900, linkage mechanism; 910, swing motor; 920, transmission rod; 930, rotating disk; 940, swing sheet; 950, hook-shaped actuated member. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 6 As shown, this embodiment proposes a detection device for the water content of crude oil in an oil field crude oil storage tank, including a sampling port 200 arranged at the top of the crude oil storage tank 100, a sample slot 300 is arranged at the sampling port 200, a detection mechanism 400 is arranged at the sample slot 300, a sampling tube 600 is slidably arranged at the sampling port 200 through a limiting mechanism 500, and also includes a driving mechanism 700 arranged at the sampling port 200 for driving the sampling tube 600 to move up and down, a distributed uniform sampling mechanism 800 is arranged at the bottom of the sampling tube 600, a telescopic lofting door 610 is arranged on the sampling tube 600 above the distributed uniform sampling mechanism 800, and a linkage mechanism 900 for driving the distributed uniform sampling mechanism 800 and the telescopic lofting door 610 is arranged inside the sampling tube 600.

[0033] The basic principle of this embodiment is as follows: the sampling port 200 is used for sampling, and a sampling tube 600 is slidably arranged inside the sampling port 200 through a limiting mechanism 500. The sampling tube 600 extends to the inside of the crude oil storage tank 100. The sampling tube 600 can be moved up and down by the driving mechanism 700. The dispersed uniform sampling mechanism 800 at the bottom can simultaneously perform multi-point or multi-region sampling and mix the samples into the sampling tube 600 under the driving of the linkage mechanism 900, and then return to its original position by the driving mechanism 700. When the telescopic sampling door 610 reaches the outside of the sampling port 200, the telescopic sampling door 610 can also be opened by the linkage mechanism 900, and the sample enters the sample slot 300, and can be tested by the detection mechanism 400. There is no need for workers to climb to the top of the tank to take samples. Since multiple areas are sampled and tested at the same time, the detection accuracy is also improved.

[0034] Reference Figure 4 In this embodiment, the sample slot 300 is arranged on one side of the sampling port 200, and the two are connected by a guide plate 220 having a flow slot 210. The flow slot 210 is directly opposite to the telescopic sample-laying door 610 in the vertical direction. When the telescopic sample-laying door 610 is in an open state driven by the linkage mechanism 900, the sample can flow into the sample slot 300 through the flow slot 210 for detection.

[0035] The specific detection mechanism 400 in this embodiment includes a microwave detection component arranged in the sample tank 300, and the microwave detection component includes a microwave signal generator 410, a microwave signal receiver 420 and a signal processing unit. The microwave signal receiver 420 is communicatively connected to the processing unit. The microwave signal generator 410 generates a microwave signal and inputs it into the sample tank 300. After passing through the crude oil sample, the microwave signal is received by the microwave signal receiver 420 and output to the processing unit for processing, and finally the water content of the crude oil is calculated.

[0036] The limiting mechanism 500 in this embodiment includes a limiting sleeve 510 arranged at the lower side of the sampling port 200 of the crude oil storage tank 100, the limiting sleeve 510 is provided with a limiting slide groove 520, the sampling tube 600 is provided with a limiting slide rail 530, and the limiting slide rail 530 is slidably arranged inside the limiting slide groove 520. Through the cooperation of the limiting slide rail 530 and the limiting slide groove 520, and the limiting effect of the limiting sleeve 510, the sampling tube 600 can be limited, so that the sampling tube 600 can only move up and down reciprocatingly to prevent it from rotating.

[0037] The driving mechanism 700 includes a driving motor 710 disposed at the sampling port 200, a driving gear 720 is disposed on the output shaft of the driving motor 710, and a rack 730 matched with the driving gear 720 is disposed on the sampling tube 600. The driving motor 710 can drive the driving gear 720 to rotate, so that the driving gear 720 can drive the sampling tube 600 to move up and down through the rack 730.

[0038] The distributed uniform sampling mechanism 800 in this embodiment includes a plurality of sampling chambers 810 connected to the sampling tube 600. A sampling groove 820 is provided at the lower portion of the sampling chamber 810. A swing plate 830 is provided inside the sampling chamber 810 and is attached to the sampling groove 820. The sampling groove 820 is inclined.

[0039] Before sampling, the swing plate 830 covers the sampling groove 820. When the sampling tube 600 descends to a specified depth, the linkage mechanism 900 can simultaneously drive multiple swing plates 830 to rotate, thereby gradually leaking out the sampling grooves 820. The crude oil enters the sampling cavity 810 through the sampling grooves 820 under pressure, and then enters the sampling tube 600. The sampling grooves 820 are in an inclined state. When the swing plate 830 rotates, the end of the sampling groove 820 away from the sampling tube 600 is opened first, and then the sampling grooves 820 are gradually opened. The crude oil away from the sampling tube 600 can enter the sampling cavity 810 first, preventing the crude oil near the sampling tube 600 from quickly filling the sampling cavity 810 and the sampling tube 600, resulting in more concentrated sampling, resulting in low detection accuracy and universality. The above-mentioned setting can be evenly sampled, further improving the detection accuracy.

[0040] The linkage mechanism 900 in this embodiment includes a swinging assembly that drives the multiple swinging plates 830 to swing synchronously and an opening assembly that drives the telescopic lofting door 610 to open, wherein the telescopic lofting door 610 is slidably arranged inside the tube wall of the sampling tube 600 through an elastic member. The swinging assembly can drive the multiple swinging plates 830 to rotate synchronously, and the opening assembly can push the telescopic lofting door 610 to retract, so that the crude oil sample can flow out into the sample tank 300. When the opening assembly is not in contact, the telescopic lofting door 610 can be reset for the next sampling.

[0041] Specifically, the swing assembly includes a swing motor 910 arranged at the upper end of the sampling tube 600, the swing motor 910 is connected to a transmission rod 920, a rotating disk 930 is provided at the lower portion of the transmission rod 920, and a plurality of swing plates 830 are connected to the rotating disk 930. The swing motor 910 can drive the transmission rod 920 to rotate, and the rotating disk 930 at the lower portion of the transmission rod 920 rotates accordingly, thereby driving the swing plate 830 to swing.

[0042] Specifically, the opening assembly includes a swinging piece 940 disposed on the transmission rod 920, and the telescopic sample-laying door 610 is provided with a hook-shaped actuated member 950. When sampling is completed, when the telescopic sample-laying door 610 reaches the guide plate 220, the swinging piece 940 can drive the hook-shaped actuated member 950 to move by rotating the swing motor 910, thereby pushing the telescopic sample-laying door 610 to open for sample-laying. Of course, the sampling amount can be appropriately increased during sampling to prevent the sample from being lost quickly from the sampling strip groove 820 during sample-laying. It can also be set that the swinging plate 830 completely blocks the sampling strip groove 820 during sample-laying.

[0043] The processing unit is communicatively connected to the display control terminal. An oil return valve connected to the crude oil storage tank 100 is provided at the bottom of the sample slot 300. After the detection is completed, the sample crude oil can flow back into the crude oil storage tank 100 by opening the oil return valve to avoid crude oil waste. A plurality of sample mixing pieces 620 are also provided on the inner side of the lower part of the sampling tube 600. By providing the sample mixing pieces 620, the sample mixing pieces 620 are in a spiral arc shape and can mix the sample entering the sampling tube 600, thereby further improving the detection accuracy. Through the display control terminal, the staff does not need to climb to the top of the tank and can complete the sampling detection on the ground. At the same time, the display control terminal can also control the actions of the drive motor 710 and the swing motor 910 to complete the sampling.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the water content of crude oil in a crude oil storage tank of an oil field, comprising a sampling port (200) arranged on the top of the crude oil storage tank (100), characterized in that: The sampling port (200) is provided with a sample slot (300), the sample slot (300) is provided with a detection mechanism (400), a sampling tube (600) is slidably provided at the sampling port (200) via a limiting mechanism (500), and further comprises a driving mechanism (700) provided at the sampling port (200) for driving the sampling tube (600) to move up and down, a distributed uniform sampling mechanism (800) is provided at the bottom of the sampling tube (600), a telescopic lofting door (610) is provided on the sampling tube (600) above the distributed uniform sampling mechanism (800), and a linkage mechanism (900) for driving the distributed uniform sampling mechanism (800) and the telescopic lofting door (610) is provided inside the sampling tube (600); The distributed uniform sampling mechanism (800) comprises a plurality of sampling cavities (810) connected to the sampling tube (600); a sampling strip groove (820) is provided at the lower portion of the sampling cavity (810); a swing plate (830) is provided inside the sampling cavity (810) and is attached to the sampling strip groove (820); and the sampling strip groove (820) is inclined.

2. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 1, characterized in that: The sample slot (300) is arranged on one side of the sampling port (200), and the two are connected via a guide plate (220) having a flow slot (210), and the flow slot (210) is directly opposite to the telescopic sample-laying door (610) in the vertical direction.

3. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 1, characterized in that: The detection mechanism (400) comprises a microwave detection component arranged in a sample slot (300), the microwave detection component comprising a microwave signal generator (410), a microwave signal receiver (420) and a signal processing unit, and the microwave signal receiver (420) is communicatively connected to the processing unit.

4. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 1, characterized in that: The limiting mechanism (500) comprises a limiting sleeve (510) arranged at the lower side of the sampling port (200) of the crude oil storage tank (100), the limiting sleeve (510) being provided with a limiting slide groove (520), the sampling tube (600) being provided with a limiting slide rail (530), and the limiting slide rail (530) being slidably arranged inside the limiting slide groove (520).

5. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 1, characterized in that: The driving mechanism (700) comprises a driving motor (710) arranged at the sampling port (200), a driving gear (720) being arranged on the output shaft of the driving motor (710), and a rack (730) cooperating with the driving gear (720) being arranged on the sampling tube (600).

6. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 1, characterized in that: The linkage mechanism (900) comprises a swing component that drives the plurality of swing plates (830) to swing synchronously, and an opening component that drives the telescopic lofting door (610) to open.

7. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 6, characterized in that: The swing assembly comprises a swing motor (910) arranged at the upper end of the sampling tube (600), the swing motor (910) being connected to a transmission rod (920), a rotating disk (930) being provided at the lower part of the transmission rod (920), and a plurality of swing plates (830) being connected to the rotating disk (930).

8. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 7, characterized in that: The opening assembly comprises a swinging piece (940) arranged on a transmission rod (920), and the telescopic lofting door (610) is provided with a hook-shaped actuated member (950).

9. The device for detecting the water content of crude oil in a crude oil storage tank of an oil field according to claim 3, characterized in that: The processing unit is communicatively connected to a display control terminal, an oil return valve communicating with a crude oil storage tank (100) is provided at the bottom of the sample tank (300), and a plurality of sample mixing sheets (620) are also provided on the inner side of the lower portion of the sampling tube (600).

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