Metering device and metering method for liquid storage tank

Abstract

The invention belongs to the technical field of metering devices, and discloses a metering device for a liquid storage tank and a metering method.The device comprises a tank body, a metering tipping bucket is rotationally connected into the tank body, an opening of the metering tipping bucket faces upwards, a rotating shaft part, connected with the tank body, of the metering tipping bucket is horizontal, a rotating shaft is fixedly connected with a vertical swing rod, a magnet is arranged on the surface of the swing rod, and a Hall sensor is arranged outside the tank body; the device is simple and reasonable in structure, the rotating shaft of the metering tipping bucket is fixedly connected with the swing rod, the number of times that a magnet passes through the swing rod and the number of times that the metering tipping bucket turns over are counted through the Hall sensor, and therefore the oil quantity of produced liquid is obtained, and measured data are accurate and timely.

Description

Technical Field

[0001] The invention belongs to the technical field of metering devices, and in particular relates to a metering device and a metering method for a liquid storage tank. Background Art

[0002] As the country continues to strengthen its supervision of environmental protection and production safety, and oilfield companies continue to improve their well management standards, metering equipment will have a broad market prospect, especially in the fields of oilfield development, production management, energy conservation and emission reduction, and will play an irreplaceable and important role.

[0003] Traditional oil production operations have problems such as insufficient accuracy of metering data, delayed early warning of single well production, unclear rules for intermittent pumping of fluid from wells, low efficiency of orderly pumping operations, and insignificant cost-saving and consumption-reducing effects. Summary of the invention

[0004] In order to overcome the above technical problems, the present invention provides a metering device and a metering method for a liquid storage tank, which calculates the amount of oil produced by counting the number of turnovers of the metering bucket through a Hall sensor, and the measurement data is accurate.

[0005] The present invention adopts the following technical solutions:

[0006] A metering device for a liquid storage tank comprises a tank body, the tank body is connected with a liquid inlet pipe and a liquid outlet pipe, the tank body is rotatably connected with a metering bucket, the rotating shaft of the metering bucket is horizontal, one end of the rotating shaft is passed through the tank body and a vertical swing arm is installed, a magnet is provided at the swinging end of the swing arm, a Hall sensor is arranged outside the tank body, and when the metering bucket is in a horizontal state, the magnet is closest to the Hall sensor.

[0007] Preferably, a box cover is provided on the top of the box body, and the lower surface of the box cover is fixedly connected to the buffer box. The side wall of the buffer box is provided with a hole, and the liquid inlet pipe is horizontal and extends into the buffer box through the hole. The top inner wall of the buffer box is fixedly connected to a vertical buffer plate 1, and the buffer plate 1 is directly opposite to the outlet of the liquid inlet pipe, and the buffer plate 1 completely covers the outlet of the liquid inlet pipe in the horizontal direction. The bottom inner wall of the buffer box is fixedly connected to a vertical buffer plate 2 downstream of the buffer plate 1, and the buffer plate 2 is parallel to the buffer plate 1 and the top edge is higher than the bottom edge of the buffer plate 1. The bottom wall of the buffer box is provided with a vertical inlet pipe downstream of the buffer plate 2, and the inlet pipe is located directly above the rotating shaft.

[0008] Preferably, the metering tipping bucket includes two liquid receiving buckets, and the two liquid receiving buckets are symmetrical about the vertical plane where the rotating shaft and the neutral plate are located.

[0009] Preferably, a vertical adjustment rod is provided above each of the two liquid receiving hoppers. The adjustment rod passes through the buffer box and the box cover and has a threaded section that is threadedly connected to a fixed nut on the top surface of the box cover.

[0010] Preferably, the box cover is provided with an observation port, which is located downstream of the second buffer plate, and the observation port is provided with a corresponding sealing cover.

[0011] Preferably, a shaft supporting block is fixedly arranged on the inner wall of the box body, the top surface of the shaft supporting block has a groove, and the other end of the rotating shaft rests in the groove.

[0012] Preferably, the Hall sensor is connected to the outer wall of the liquid inlet pipe through a vertical rod.

[0013] Preferably, a control box is provided on the outer wall of the box body, the control box is electrically connected to the Hall sensor, and the control box has a communication module.

[0014] Metering method for liquid storage tank:

[0015] S1. The produced liquid flows in from the liquid inlet pipe and flows out from the liquid outlet pipe to the liquid storage tank;

[0016] S2. The output liquid flows into the buffer tank from the liquid inlet pipe, and then flows into the metering bucket through the inlet pipe. When the output liquid received by one of the liquid receiving buckets of the metering bucket 5 reaches a certain mass, the liquid receiving bucket sinks and pours out the output liquid inside. During this process, the other liquid receiving bucket swings upward and toward the middle to receive the output liquid. The poured output liquid flows out through the liquid outlet pipe to the liquid storage tank;

[0017] S3. When the metering bucket swings, the swing arm is driven to swing back and forth, and the magnet passes through the sensor back and forth. The Hall sensor detects the period of magnetic field change, and the sensor signal reaches the control box. The processor in the control box collects statistics and calculates the flow rate, and further sends the data to the management end through the wireless module to complete the metering of the inflowing output fluid;

[0018] S4. When the produced fluid gushes, the first buffer plate blocks and decelerates the produced fluid sprayed from the liquid inlet pipe, and the second buffer plate further decelerates the produced fluid;

[0019] S5. When the amount of each dumping needs to be adjusted and calibrated, the maximum turning range of the metering bucket can be changed by rotating the adjusting rod to adjust the bottom height of the adjusting rod;

[0020] S6. When it is necessary to check the internal conditions and take samples, open the sealing cover and observe or take samples through the observation port.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention fixes a swing rod to the rotating shaft of the metering bucket, and uses a Hall sensor to count the number of times the magnet on the swing rod passes through, and calculates the number of times the metering bucket flips, thereby obtaining the amount of oil produced, and the measurement data is accurate and timely;

[0023] 2. The present invention is provided with an adjustment rod above the two liquid receiving buckets, which controls the tipping angle of the metering bucket to adjust the metering amount each time, and a buffer box is provided to prevent the output liquid from flowing into the liquid inlet pipe too quickly, thereby affecting the metering accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the present invention;

[0025] Figure 2 This is a partial schematic diagram of the present invention Figure 1 ;

[0026] Figure 3 This is a partial schematic diagram of the present invention Figure 2 ;

[0027] Figure 4 is a cross-sectional schematic diagram of a buffer box of the present invention;

[0028] Figure 5 This is a schematic diagram of the interior of the box;

[0029] Figure 6 It is an overall schematic diagram of the second embodiment.

[0030] Description of reference numerals:

[0031] 1. Box body; 11. Control box; 12. Buffer box; 121. Sealing cover; 122. Buffer plate 1; 123. Buffer plate 2; 124. Inflow pipe; 2. Liquid outlet pipe; 3. Liquid inlet pipe; 4. Adjusting rod; 5. Metering bucket; 51. Rotating shaft; 6. Rocker arm; 7. Hall sensor; 8. Box cover; 81. Fixed nut; 9. Support shaft block. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the embodiments are conventional methods in the art unless otherwise specified. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] Embodiment 1

[0034] A metering device for a liquid storage tank comprises a box body 1, the box body 1 is hollow inside, a box cover is arranged on the top of the box body 1, a side wall of the box body 1 is connected to a liquid inlet pipe 3, a bottom of the box body 1 is provided with a liquid outlet pipe 2, a metering bucket 5 is rotatably connected inside the box body 1, the metering bucket 5 opens upward, a rotating shaft 51 connecting the metering bucket 5 to the box body 1 is horizontal and passes through the center of the cross section of the box body 1, the rotating shaft 51 is located at the bottom of the metering bucket 5 and bisects the liquid receiving buckets on both sides with the neutral plate, the two liquid receiving buckets are symmetrical about the rotating shaft 51 and the neutral plate, and vertical adjustment rods 4 are arranged above the two liquid receiving buckets, and the adjustment rod 4 has a threaded section that is aligned with the upper surface of the box cover 8 The fixed nut 81 is threadedly connected, and the height of the adjusting rod 4 can be adjusted by rotating the adjusting rod to control the rotation angle of the metering bucket 5, so as to realize the control of each metering amount. One end of the rotating shaft 51 passes through the box body 1 and is connected to the vertically upward swing rod. A magnet is provided on the top of the swing rod. The liquid inlet pipe is fixedly connected to the vertically downward vertical rod. The bottom end of the vertical rod is installed with a Hall sensor 7. When the metering bucket 5 is horizontal, the magnet is closest to the Hall sensor 7. When the metering bucket 5 is turned over, the magnet reciprocates through the Hall sensor 7, and the number of flipping times of the metering bucket 5 can be further counted through the signal of the sensor to calculate the flow rate. The end does not pass through the box body 1, but is placed in the groove of the support shaft block 9 on the inner wall of the box body 1. The bottom of the box cover 8 is fixedly connected to the buffer box 12. The side wall of the buffer box 12 is provided with a hole. The box body 1 is provided with a horizontal liquid inlet pipe 3 above the metering tipping bucket 5. The liquid inlet pipe 3 extends into the buffer box 12 from the hole. The top inner wall of the buffer box 12 is fixedly connected to a vertical buffer plate 122. The buffer plate 122 is located in front of the outlet of the liquid inlet pipe 3 and is directly opposite to the outlet pipe mouth of the liquid inlet pipe 3. The buffer plate 122 completely covers the pipe mouth of the liquid inlet pipe 3 in the horizontal direction. When the liquid inlet pipe 3 sprays violently, it can be intercepted and buffered by the buffer plate 122. The bottom of the buffer box 12 The inner wall is fixedly connected to the vertical horizontal buffer plate 2 123 in front of the buffer plate 1 122 (downstream). The top surface of the buffer plate 2 123 is higher than the bottom surface of the buffer plate 1 122. An inlet pipe 124 is provided at the bottom of the buffer box 12 in front of the buffer plate 2 123. The inlet pipe 124 is located directly above the rotating shaft 51. The buffer plates 1 122 and 123 slow down the flow rate of the buffer solution when the output fluid flows in too fast, slow down and even the speed of the output fluid flowing from the inlet pipe 124 to the metering bucket 5, and ensure the accuracy of the measurement. The lengths of the buffer plates 1 122 and 123 are both smaller than the width of the buffer box 12.

[0035] Embodiment 2

[0036] like Figure 6As shown, based on the previous embodiment, the box cover 8 of this embodiment is provided with an observation port, and the observation port is located in front of the buffer plate 123, which can observe the situation in the buffer box 12 and facilitate sampling, and the observation port is provided with a corresponding sealing cover 121; the outer wall of the box body 1 is provided with a control box 11, and the control box 11 is provided with a communication module and a processor. The processor is electrically connected to the Hall sensor and is used to process the signal from the Hall sensor, count the number of rotations of the metering bucket 5, and calculate the inflow of the output liquid. The processor is electrically connected to the communication module, and the communication module is a wireless module, which is used to send the collected data to the user.

[0037] Metering method for liquid storage tank:

[0038] S1. The produced liquid flows in from the liquid inlet pipe 3 and flows out from the liquid outlet pipe 2 to the liquid storage tank;

[0039] S2. The output liquid flows into the buffer tank 12 from the liquid inlet pipe 3, and then flows into the metering bucket 5 through the inlet pipe 124. When the output liquid received by one of the liquid receiving buckets of the metering bucket 5 reaches a certain mass, the liquid receiving bucket sinks and pours out the output liquid inside. During this process, the other liquid receiving bucket swings upward and toward the middle to receive the output liquid. The poured output liquid flows out through the liquid outlet pipe 2 to the liquid storage tank;

[0040] S3. When the metering bucket 5 swings, the swing rod 6 is driven to swing back and forth, and the magnet reciprocates through the sensor. The Hall sensor 7 detects the period of magnetic field change, and the sensor signal reaches the control box 11. The processor in the control box 11 collects statistical data and calculates the flow rate, and further sends the data to the management end through the wireless module to complete the metering of the inflowing output fluid;

[0041] S4. When the output fluid gushes, the buffer plate 122 blocks and slows down the output fluid ejected from the liquid inlet pipe 3, and the buffer plate 123 further slows down the output fluid;

[0042] S5. When the amount of each dumping needs to be adjusted and calibrated, the adjustment is completed by rotating the adjustment lever 4, adjusting the height of the adjustment lever 4, and changing the maximum turning amplitude of the metering tipping bucket 5;

[0043] S6. When it is necessary to check the internal conditions and take samples, open the sealing cover 121 and observe or take samples through the observation port.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the above embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A metering device for a liquid storage tank, comprising a tank body, the tank body being connected with a liquid inlet pipe and a liquid outlet pipe, characterized in that: The box body is rotatably connected to the metering bucket, the rotating shaft of the metering bucket is horizontal, one end of the rotating shaft is passed through the box body and a vertical swing rod is installed, the swing end of the swing rod is provided with a magnet, and a Hall sensor is arranged outside the box body. When the metering bucket is in a horizontal state, the magnet is closest to the Hall sensor.

2. The measuring device for a liquid storage tank according to claim 1, characterized in that: A box cover is arranged on the top of the box body, and the lower surface of the box cover is fixedly connected to the buffer box. The side wall of the buffer box is provided with a hole, and the liquid inlet pipe is horizontal and extends into the buffer box through the hole. The top inner wall of the buffer box is fixedly connected to a vertical buffer plate 1, and the buffer plate 1 is directly opposite to the outlet of the liquid inlet pipe, and the buffer plate 1 completely covers the outlet of the liquid inlet pipe in the horizontal direction. The bottom inner wall of the buffer box is fixedly connected to a vertical buffer plate 2 downstream of the buffer plate 1, and the buffer plate 2 is parallel to the buffer plate 1 and the top edge is higher than the bottom edge of the buffer plate 1. The bottom wall of the buffer box is provided with a vertical inlet pipe downstream of the buffer plate 2, and the inlet pipe is located directly above the rotating shaft.

3. The measuring device for a liquid storage tank according to claim 2, characterized in that: The metering tipping bucket comprises two liquid receiving buckets, and the two liquid receiving buckets are symmetrical about the vertical plane where the rotating shaft and the neutral plate are located.

4. The measuring device for a liquid storage tank according to claim 3, characterized in that: A vertical adjusting rod is respectively arranged above the two liquid receiving hoppers. The adjusting rod passes through the buffer box and the box cover and has a threaded section which is threadedly connected with a fixed nut on the top surface of the box cover.

5. The measuring device for a liquid storage tank according to claim 2, characterized in that: The box cover is provided with an observation port, which is located downstream of the second buffer plate and is provided with a corresponding sealing cover.

6. The measuring device for a liquid storage tank according to claim 1, characterized in that: The inner wall of the box body is fixedly provided with a shaft supporting block, the top surface of the shaft supporting block is provided with a groove, and the other end of the rotating shaft is placed in the groove.

7. The measuring device for a liquid storage tank according to claim 1, characterized in that: The Hall sensor is connected to the outer wall of the liquid inlet pipe through a vertical rod.

8. The measuring device for a liquid storage tank according to claim 4, characterized in that: A control box is arranged on the outer wall of the box body. The control box is electrically connected to the Hall sensor and has a communication module.

9. A method for measuring a liquid storage tank, characterized in that: The liquid storage tank metering device according to claim 8 further comprises the following steps: S1. The produced liquid flows in from the liquid inlet pipe and flows out from the liquid outlet pipe to the liquid storage tank; S2. The output liquid flows into the buffer tank from the liquid inlet pipe, and then flows into the metering bucket through the inlet pipe. When the output liquid received by one of the liquid receiving buckets of the metering bucket 5 reaches a certain mass, the liquid receiving bucket sinks and pours out the output liquid inside. During this process, the other liquid receiving bucket swings upward and toward the middle to receive the output liquid. The poured output liquid flows out through the liquid outlet pipe to the liquid storage tank; S3. When the metering bucket swings, the swing arm is driven to swing back and forth, and the magnet passes through the sensor back and forth. The Hall sensor detects the period of magnetic field change, and the sensor signal reaches the control box. The processor in the control box collects statistics and calculates the flow rate, and further sends the data to the management end through the wireless module to complete the metering of the inflowing output fluid; S4. When the produced fluid gushes, the first buffer plate blocks and decelerates the produced fluid sprayed from the liquid inlet pipe, and the second buffer plate further decelerates the produced fluid; S5. When the amount of each dumping needs to be adjusted and calibrated, the maximum turning range of the metering bucket can be changed by rotating the adjusting rod to adjust the bottom height of the adjusting rod; S6. When it is necessary to check the internal conditions and take samples, open the sealing cover and observe or take samples through the observation port.

Images