API (American Petroleum Institute) filter loss automatic measuring device

Abstract

The invention belongs to the technical field of oil exploration and development technology test equipment, and particularly relates to an API filter loss automatic measuring device which comprises a supporting frame. The measuring mechanism is fixedly arranged on the supporting frame, and the measuring mechanism is used for measuring the filter loss of the drilling fluid; the clamping and transferring mechanism is fixedly arranged on the supporting frame, and the clamping and transferring mechanism is used for clamping and transferring the measuring cup into the measuring mechanism; the sealing mechanism is fixedly arranged on the supporting frame, and a sealing environment is formed by the sealing end of the sealing mechanism, the measuring cup and the measuring mechanism; the quantitative liquid inlet mechanism is fixedly arranged on the supporting frame, and the quantitative liquid inlet mechanism is used for quantitatively pumping drilling fluid into the measuring cup; the cleaning mechanism communicates with the quantitative liquid inlet mechanism and is used for cleaning the quantitative liquid inlet mechanism and the liquid inlet pipeline; the pressurizing mechanism is fixedly arranged on the supporting frame, and the pressurizing mechanism is used for pressurizing the measuring cup containing the drilling fluid. According to the invention, the accuracy and efficiency of filter loss measurement can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum exploration and development technology test equipment, and in particular relates to an automatic measuring device for API filtration loss. Background Art

[0002] During oil drilling, it is necessary to understand the basic condition of drilling fluid. The phenomenon of drilling fluid seeping into the formation from the drilling fluid column. The size of the filtration loss will affect the performance of the drilling fluid, the stability of the well wall, the protection of the oil and gas layer, and many other aspects. Therefore, accurate measurement of drilling fluid filtration loss is crucial to optimize the performance of drilling fluid and improve drilling efficiency. At present, there are still some limitations in the measurement process, such as low measurement accuracy, complex operation, and inconvenient data collection and processing.

[0003] Therefore, it is necessary to design an automatic API filtration loss measurement device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic API fluid loss measuring device to solve the above problems and achieve the purpose of improving the accuracy and efficiency of fluid loss measurement.

[0005] To achieve the above object, the present invention provides the following scheme: an automatic measuring device for API filtration loss, comprising:

[0006] Support frame;

[0007] A measuring mechanism, fixedly arranged on the support frame, and used for measuring the filtration loss of drilling fluid;

[0008] A clamping and transferring mechanism, fixedly arranged on the support frame, and used for clamping and transferring the measuring cup into the measuring mechanism;

[0009] A sealing mechanism, fixedly arranged on the support frame, wherein a sealing end of the sealing mechanism forms a sealed environment with the measuring cup and the measuring mechanism;

[0010] A quantitative liquid inlet mechanism, fixedly arranged on the support frame, and used for quantitatively pumping drilling fluid into the measuring cup;

[0011] A cleaning mechanism, connected to the quantitative liquid inlet mechanism, and used for cleaning the quantitative liquid inlet mechanism and the liquid inlet pipeline;

[0012] A pressurizing mechanism is fixedly arranged on the support frame, and is used for pressurizing the measuring cup containing drilling fluid.

[0013] An automatic API filtration loss measuring device according to the present invention, the measuring mechanism includes a positioning cylinder, the positioning cylinder is fixedly connected to the support frame, the bottom end of the positioning cylinder is open and fixedly connected to the top of a filtration loss container, a beaker is correspondingly arranged at the bottom end of the filtration loss container, a camera is correspondingly arranged on one side of the beaker, and a sealing ring II is arranged at the top end of the positioning cylinder.

[0014] According to the present invention, an automatic API filtration loss measuring device is provided, wherein a through hole is provided on the bottom wall of the measuring cup, a lower cover is detachably connected to the bottom end of the measuring cup through a thread, a filter paper is provided between the bottom end of the measuring cup and the lower cover, and a sealing ring I is provided on the top end of the measuring cup.

[0015] An automatic API filtration loss measuring device based on the present invention, the clamping and transferring mechanism includes a screw slide II, the fixed end of the screw slide II is fixedly connected to the support frame, the movable end of the screw slide II is fixedly connected to the fixed end of the screw slide III, the movable end of the screw slide III is fixedly connected to a mechanical claw, and the moving direction of the movable end of the screw slide II is vertical to the moving direction of the movable end of the screw slide III in space.

[0016] According to an automatic API filtration loss measuring device of the present invention, the sealing mechanism includes an electric push rod, which is vertically arranged and fixedly connected to the support frame at a fixed end. The movable end of the electric push rod is detachably connected to a push rod joint, and the bottom end of the push rod joint is detachably connected to an upper cover. When the upper cover is lowered to contact the top of the measuring cup, it forms a sealed environment with the measuring cup and the measuring mechanism.

[0017] An automatic measuring device for API filtration loss based on the present invention, the quantitative liquid inlet mechanism includes a peristaltic pump, the peristaltic pump is fixedly connected to the support frame, the liquid inlet end of the peristaltic pump is fixedly connected to the first port of an electric three-way ball valve I, the second port of the electric three-way ball valve I is fixedly connected to a drilling fluid container, the liquid outlet end of the peristaltic pump is fixedly connected to a quantitative cylinder, a quantitative liquid inlet portion is arranged inside the quantitative cylinder, and the quantitative cylinder is fixedly connected to the upper cover through a pipeline.

[0018] An automatic API filtration loss measuring device based on the present invention, the quantitative liquid inlet part includes a micro push rod, the micro push rod is vertically arranged and the fixed end is fixedly connected to the support frame, the piston end of the micro push rod is fixedly connected to the piston through the piston fixing frame, and the piston is sealingly slidably arranged in the quantitative cylinder.

[0019] An automatic API filtration loss measuring device based on the present invention, the cleaning mechanism includes a clean water tank and a screw slide I, the clean water tank is fixedly connected to the third port of the electric three-way ball valve I, the fixed end of the screw slide I is fixedly connected to the support frame, and the movable end of the screw slide I is fixedly connected to a water receiving tray.

[0020] An automatic API filtration loss measuring device based on the present invention, the pressurizing mechanism includes an air compressor, the air outlet end of the air compressor is fixedly connected to one end of an electric ball valve II, the other end of the electric ball valve II is fixedly connected to the first port of an electric three-way ball valve II, the second port of the electric three-way ball valve II is fixedly connected to one end of an electric ball valve IV, the other end of the electric ball valve IV is fixedly connected to the upper cover, and the third port of the electric three-way ball valve II is fixedly connected to one end of an electric ball valve III.

[0021] According to the API filtration loss automatic measuring device of the present invention, an electric ball valve I and a pressure gauge are arranged on the pipeline connecting the quantitative cylinder and the upper cover.

[0022] Compared with the prior art, the present invention has the following advantages and technical effects:

[0023] The present invention can easily grab the measuring cup into the measuring mechanism through the provided clamping transfer mechanism; the provided cleaning mechanism can clean and maintain key components, thereby avoiding interference with the next measurement of residual drilling fluid; the provided sealing mechanism can ensure concentricity with the measuring cup, seal the measuring cup, greatly reduce the accuracy of operation, and make measurement easier; the provided measuring mechanism can reflect the on-site conditions in real time and record the filtration loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0025] Figure 1 It is a front schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the back side of the present invention;

[0027] Figure 3 It is a schematic diagram of the measuring mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of a quantitative cylinder of the present invention;

[0029] Figure 5 This is a schematic diagram of the water receiving tray of the present invention;

[0030] Figure 6 It is a schematic diagram of a rectangular frame of the present invention;

[0031] Figure 7 It is a schematic diagram of the positioning tube of the present invention;

[0032] Figure 8 This is a schematic diagram of the measuring cup of the present invention;

[0033] Fig. 9 It is a process flow chart of the present invention.

[0034] Among them, 1. Electric push rod; 2. Push rod joint; 3. Upper cover; 4. Mechanical claw; 5. Screw slide II; 6. Electric ball valve IV; 7. Measuring cup; 8. Screw slide I; 9. Electric ball valve III; 10. Electric ball valve II; 11. Electric three-way ball valve II; 12. Beaker; 13. Camera; 14. Electric three-way ball valve I; 15. Positioning cylinder; 16. Measuring cylinder; 17. Electric ball valve I; 18. Piston; 19. Water tray; 20. Piston fixing bracket; 21. Micro push rod; 22. Pressure gauge; 23. Screw slide III; 24. Peristaltic pump; 25. Rectangular frame; 26. Sealing ring I; 27. Sealing ring II; 28. Lower cover; 29. ​​Filter paper; 30. Filter loss container. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in 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.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1 to 9 As shown, the present invention provides an automatic API filtration loss measuring device, comprising a support frame;

[0038] A measuring mechanism is fixedly arranged on the support frame, and is used to measure the filtration loss of the drilling fluid;

[0039] A clamping and transferring mechanism, fixedly arranged on the support frame, and used for clamping and transferring the measuring cup 7 into the measuring mechanism;

[0040] The sealing mechanism is fixedly arranged on the support frame, and the sealing end of the sealing mechanism forms a sealed environment with the measuring cup 7 and the measuring mechanism;

[0041] A quantitative liquid inlet mechanism is fixedly arranged on the support frame, and is used to quantitatively pump drilling fluid into the measuring cup 7;

[0042] A cleaning mechanism is connected to the quantitative liquid inlet mechanism, and is used to clean the quantitative liquid inlet mechanism and the liquid inlet pipeline;

[0043] The pressurizing mechanism is fixedly arranged on the support frame, and is used to pressurize the measuring cup 7 containing the drilling fluid.

[0044] Furthermore, the measuring mechanism includes a positioning cylinder 15, which is fixedly connected to the support frame. The bottom end of the positioning cylinder 15 is open and fixedly connected to the top of the filtration loss container 30. A beaker 12 is correspondingly arranged at the bottom end of the filtration loss container 30, and a camera 13 is correspondingly arranged on one side of the beaker 12. A sealing ring II 27 is arranged at the top of the positioning cylinder 15.

[0045] The beaker 12 collects the filtrate first, and the camera 13 performs online detection; the specific steps are: select an image in the beaker 12 to mark a trapezoidal area, calculate the center X coordinate, the image is symmetrical on both sides and will appear in pairs, use the Robert trapezoidal operator to detect edge points, the calculation formula is:

[0046] Δf x (x,y)=f(x,y)-f(x-1,y-1),

[0047] Δf y (x,y)=f(x-1,y)-f(x,y-1),

[0048] G|Δf(x,y)|≈|Δf x (x,y)|-|Δf y (x,y)|,

[0049] Select an appropriate threshold t to separate the edge points, so that the beaker 12 is symmetrical on both sides, and the central axis is obtained by the calculation formula:

[0050] Where x c is the base coordinate of the central point, x l ,x r are the left and right edge points of the same row;

[0051] The number of occurrences of the reference value of the center point of each area is calculated according to the following formula:

[0052] Where N(x) is the center point reference value at x c = the number of occurrences at x, K is the region size, and S(x) is the most likely region for the center point;

[0053] Use the average to find the final calculated value of the center point:

[0054] Where x c The value range of is the area where S(x) obtains the maximum value;

[0055] Since the liquid lost from the drilling fluid is black and the beaker 12 is colorless and transparent, it is easy to find the edge point of the image and then calculate the liquid level. The formula is as follows:

[0056] Where D is the number of pixels constituting the edge of the liquid surface y i is the Y coordinate of the edge point.

[0057] Furthermore, a through hole is provided on the bottom wall of the measuring cup 7 , a lower cover 28 is detachably connected to the bottom end of the measuring cup 7 by thread, a filter paper 29 is provided between the bottom end of the measuring cup 7 and the lower cover 28 , and a sealing ring I 26 is provided at the top end of the measuring cup 7 .

[0058] Furthermore, the clamping and transferring mechanism includes a screw slide Ⅱ5, the fixed end of the screw slide Ⅱ5 is fixedly connected to the support frame, the movable end of the screw slide Ⅱ5 is fixedly connected to the fixed end of the screw slide Ⅲ23, the movable end of the screw slide Ⅲ23 is fixedly connected to the mechanical claw 4, and the moving direction of the movable end of the screw slide Ⅱ5 is vertical to the moving direction of the movable end of the screw slide Ⅲ23 in space.

[0059] The mechanical claw 4 uses a flexible claw, adopts a 995 servo, and PID control. The potentiometer converts the angle between the claws into an electrical signal, and the differential amplifier amplifies the signal and sends it to the servo to drive the mechanical claw 4 to open and close; the angle between the claws is converted into an electrical signal by another potentiometer, which is fed back to the differential amplifier to realize the opening and closing of the mechanical claw 4.

[0060] Furthermore, the sealing mechanism includes an electric push rod 1, which is vertically arranged and fixedly connected to the support frame at the fixed end. The movable end of the electric push rod 1 is detachably connected to a push rod joint 2, and the bottom end of the push rod joint 2 is detachably connected to an upper cover 3. When the upper cover 3 is lowered to contact the top of the measuring cup 7, it forms a sealed environment with the measuring cup 7 and the measuring mechanism.

[0061] The sealing ring I26 and the sealing ring II27 are respectively installed in the sealing grooves of the measuring cup 7 and the positioning cylinder 15. The electric push rod 1 drives the upper cover 3 to move downward. The upper cover 3 has a large contact area and can press the sealing ring I26 to form an end face seal. The top diameter of the measuring cup 7 is larger than the positioning cylinder 15, and it can also press the sealing ring II27 to form an end face seal. The measuring cup 7 and the lower cover 28 are threadedly connected to press the filter screen filter paper 29. The positioning cylinder 15 is fixed on the plate with threads and has a sealing groove on the top. The measuring cup 7 is designed to be conical in the middle, which facilitates the filtrate to flow downward and reduce measurement errors. The upper cover 3 presses the measuring cup 7, and the force is transmitted from the upper cover 3 to the measuring cup 7. The measuring cup 7 transmits the force to the positioning cylinder 15, and the positioning cylinder 15 transmits the force to the plate, and the plate supports the entire measuring device.

[0062] Furthermore, the quantitative liquid inlet mechanism includes a peristaltic pump 24, which is fixedly connected to the support frame, the liquid inlet end of the peristaltic pump 24 is fixedly connected to the first port of the electric three-way ball valve Ⅰ14, the second port of the electric three-way ball valve Ⅰ14 is fixedly connected to the drilling fluid container, the liquid outlet end of the peristaltic pump 24 is fixedly connected to the quantitative cylinder 16, a quantitative liquid inlet part is arranged inside the quantitative cylinder 16, and the quantitative cylinder 16 is fixedly connected to the upper cover 3 through a pipeline.

[0063] Furthermore, the quantitative liquid inlet part includes a micro push rod 21, which is vertically arranged and fixedly connected to the support frame at the fixed end. The piston end of the micro push rod 21 is fixedly connected to the piston 18 through the piston fixing frame 20, and the piston 18 is sealingly slidably arranged in the quantitative cylinder 16.

[0064] The micro push rod 21 is fixed to the right side plate with bolts, the metering cylinder 16 is fixed to the right side plate by two pipe clamps, the piston fixing frame 20 is used to clamp the top of the piston 18, the micro push rod 21 pushes the piston 18 to move in the metering cylinder 16, and the upper part of the metering cylinder 16 has two holes, one inlet and the other is the excess liquid overflow port, and the outlet is connected to the electric ball valve Ⅰ17 at the bottom to control the specific amount of liquid entering the measuring cup 7.

[0065] Furthermore, the cleaning mechanism includes a clean water tank and a screw slide Ⅰ8, the clean water tank is fixedly connected to the third port of the electric three-way ball valve Ⅰ14, the fixed end of the screw slide Ⅰ8 is fixedly connected to the support frame, and the movable end of the screw slide Ⅰ8 is fixedly connected to the water receiving tray 19.

[0066] The screw slide uses a small stepper motor and a high-performance STC8A single-chip microcomputer as the stepper motor control part. The stepper motor is set to have the highest priority for the slide motion control subroutine, followed by the input subroutine and the display output subroutine. The timer is used as the interrupt time to make these two subroutines work at a specific frequency. When the stepper motor controller is working, it generates a pulse signal to drive the stepper motor according to the speed, acceleration and the two positive and negative control bits to control the current amplitude and direction of the two coils, drive the screw slide Ⅰ8 to control the horizontal movement of the water receiving tray 19; the screw slide Ⅲ23 is fixed to the slider on the screw slide Ⅱ5 with a connecting plate to form a T-shape, and the mechanical claw 4 is fixed to the slider on the screw slide Ⅲ with a plate. Under the cooperation of the two slides, it can make a linear motion to clamp and put down the measuring cup 7.

[0067] The two ends of the Z-shaped connecting plate are respectively fixed with bolts on the water receiving tray 19 and the slider on the screw slide Ⅰ8. The slide adopts a ball screw, which is wear-resistant and high-precision, and is supported and driven by a linear guide. A limit switch is installed on the side of the screw slide Ⅰ8; when the measurement is completed, the upper cover 3 is lifted, and the slider drives the water receiving tray 19 to move horizontally to the bottom of the upper cover 3 and stop automatically. The peristaltic pump 24 draws clean water, and the residual drilling fluid is cleaned out of the pipeline through the quantitative cylinder 16, and the waste water is collected from the bottom of the water receiving tray 19.

[0068] Furthermore, the pressurizing mechanism includes an air compressor, an air outlet end of the air compressor is fixedly connected to one end of an electric ball valve Ⅱ10, the other end of the electric ball valve Ⅱ10 is fixedly connected to a first port of an electric three-way ball valve Ⅱ11, the second port of the electric three-way ball valve Ⅱ11 is fixedly connected to one end of an electric ball valve Ⅳ6, the other end of the electric ball valve Ⅳ6 is fixedly connected to the upper cover 3, and the third port of the electric three-way ball valve Ⅱ11 is fixedly connected to one end of an electric ball valve Ⅲ9.

[0069] Furthermore, an electric ball valve Ⅰ17 and a pressure gauge 22 are provided on the pipeline connecting the metering cylinder 16 and the upper cover 3 .

[0070] The electric push rod 1 is threadedly connected to the push rod joint 2, which is used to press the measuring cup 7 and seal the end surface; the top surface of the positioning cylinder 15 is provided with a sealing groove to fix the position of the measuring cup 7 to be measured; the upper cover 3 is threadedly connected to the push rod joint 2; the top of the measuring cup 7 is provided with a sealing groove, and the bottom of the filtration loss container is provided with an internal thread, which is connected to the lower cover 28; the lower cover 28 is threadedly connected to the bottom of the measuring cup 7 to press the filter paper 29; the mechanical claw 4 is used to grasp the measuring cup 7 into the positioning cylinder 15; the screw slide II 5 and the screw slide III 23 are used to control the parallel movement of the mechanical claw 4 up and down, left and right, and the screw slide I 8 controls the horizontal movement of the water receiving tray 19; the beaker 12 is used to collect the filtrate; the micro push rod 21 is bolted to the piston fixing frame 20 for The piston 18 is pushed to move; the piston 18 is fixed by the piston fixing frame 20, and reciprocates in the metering cylinder 16 to transport drilling fluid and clean water; the metering cylinder 16 is used to control the volume of drilling fluid or clean water entering the measuring cup 7 each time, and the excess amount will overflow from the other port; the peristaltic pump 24 is used to extract drilling fluid and clean water; the pressure gauge 22 is used to directly read the pressure value; a circular hole is opened in the center of the water receiving tray 19, a hose cylindrical joint is welded at the bottom, and 4 more circular holes are opened on the side. The water receiving tray 19 is used to collect waste water from cleaning pipelines, which flows out from the bottom of the water receiving tray 19; the support frame includes a rectangular frame 25, which is composed of 16 rectangular tubes, including 4 long rectangular tubes, 6 medium rectangular tubes, and 6 short rectangular tubes, and is used to support the entire device.

[0071] The present invention also provides a process flow of an API filtration loss automatic measuring device, comprising:

[0072] Start the mechanical claw 4 to grab the measuring cup 7, then start the screw slide III 23 to move upward, then start the screw slide II 5 to move to the top of the positioning cylinder 15, start the screw slide III 23 to move downward again to place the measuring cup 7 into the positioning cylinder 15, the mechanical claw 4 is released, and then the screw slide II 5 drives the mechanical claw 4 to leave;

[0073] The electric push rod 1 drives the upper cover 3 to move downward until the sealing ring Ⅰ26 on the measuring cup 7 and the sealing ring Ⅱ27 between the measuring cup 7 and the positioning cylinder 15 are compressed; the electric three-way ball valve Ⅰ14 is switched to the drilling fluid path, and the peristaltic pump 24 extracts the drilling fluid, which first reaches the quantitative cylinder 16, and the excess drilling fluid will flow out from another port, opening the electric ball valve Ⅰ17, and at the same time, the micro push rod 21 drives the piston 18 to move downward, and the drilling fluid is pumped into the measuring cup 7;

[0074] Open the electric ball valve II10 and the electric ball valve IV6, close the electric ball valve I17 and the electric ball valve III9, switch the electric three-way ball valve II11 to the pressure port, let in pressurized air, and reach the measuring cup 7 through the pressure gauge 22. The pressure gauge 22 can reflect the pressure in the measuring cup 7 in real time. When the pressure reaches the set value, it is maintained for 30 minutes;

[0075] After 30 minutes, the drilling fluid loss is collected at the outlet of the loss container, and the camera 13 records it in real time and uploads it to the computer. When the collection is completed, the electric three-way ball valve II 11 is switched to the pressure relief port, and the electric ball valve III 9 is opened to relieve pressure from the outlet pipeline; when the pressure relief is completed, the electric push rod 1 is lifted upward to separate the measuring cup 7 and the upper cover 3;

[0076] The screw slide Ⅰ8 is started to drive the water receiving tray 19 to the bottom of the upper cover 3, the electric three-way ball valve Ⅰ14 is switched to the water path, the peristaltic pump 24 is started, the clean water is first drawn to the quantitative cylinder 16, the electric ball valve Ⅰ17 is opened, and the micro push rod 21 pushes the clean water out of the pipeline, and the cleaned waste water flows from the upper cover 3 to the water receiving tray 19, and the waste water flows out from the bottom of the water receiving tray 19;

[0077] Start the screw slide II 5 to make the mechanical claw 4 grab the measuring cup 7, and the screw slide III 23 drives the measuring cup 7 to move upward and disengage from the positioning cylinder 15. Finally, the two slides cooperate to put the measuring cup 7 back to its original position.

[0078] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

Claims

1. An automatic measuring device for API filtration loss, characterized in that: include Support frame; A measuring mechanism, fixedly arranged on the support frame, and used for measuring the filtration loss of drilling fluid; a clamping and transferring mechanism, fixedly arranged on the support frame, the clamping and transferring mechanism being used to clamp and transfer the measuring cup (7) into the measuring mechanism; A sealing mechanism, fixedly arranged on the support frame, wherein a sealing end of the sealing mechanism forms a sealed environment with the measuring cup (7) and the measuring mechanism; A quantitative liquid inlet mechanism, fixedly arranged on the support frame, and used for quantitatively pumping drilling fluid into the measuring cup (7); A cleaning mechanism, connected to the quantitative liquid inlet mechanism, and used for cleaning the quantitative liquid inlet mechanism and the liquid inlet pipeline; A pressurizing mechanism is fixedly arranged on the support frame, and is used to pressurize the measuring cup (7) containing drilling fluid.

2. The API fluid loss automatic measuring device according to claim 1, characterized in that: The measuring mechanism comprises a positioning cylinder (15), wherein the positioning cylinder (15) is fixedly connected to the support frame, the bottom end of the positioning cylinder (15) is open and fixedly connected to the top end of a filtration loss container (30), a beaker (12) is correspondingly arranged at the bottom end of the filtration loss container (30), a camera (13) is correspondingly arranged on one side of the beaker (12), and a sealing ring II (27) is arranged at the top end of the positioning cylinder (15).

3. The automatic API fluid loss measuring device according to claim 2, characterized in that: The bottom wall of the measuring cup (7) is provided with a through hole, the bottom end of the measuring cup (7) is detachably connected to a lower cover (28) by means of a thread, a filter paper (29) is provided between the bottom end of the measuring cup (7) and the lower cover (28), and a sealing ring I (26) is provided at the top end of the measuring cup (7).

4. The API fluid loss automatic measuring device according to claim 1, characterized in that: The clamping and transferring mechanism comprises a screw slide II (5), the fixed end of the screw slide II (5) is fixedly connected to the support frame, the movable end of the screw slide II (5) is fixedly connected to the fixed end of the screw slide III (23), the movable end of the screw slide III (23) is fixedly connected to a mechanical claw (4), and the moving direction of the movable end of the screw slide II (5) is vertical to the moving direction of the movable end of the screw slide III (23) in space.

5. The API fluid loss automatic measuring device according to claim 3, characterized in that: The sealing mechanism comprises an electric push rod (1), the electric push rod (1) is vertically arranged and the fixed end is fixedly connected to the support frame, the movable end of the electric push rod (1) is detachably connected to a push rod joint (2), the bottom end of the push rod joint (2) is detachably connected to an upper cover (3), and when the upper cover (3) is lowered to contact the top of the measuring cup (7), a sealed environment is formed with the measuring cup (7) and the measuring mechanism.

6. The API fluid loss automatic measuring device according to claim 5, characterized in that: The quantitative liquid inlet mechanism comprises a peristaltic pump (24), the peristaltic pump (24) is fixedly connected to the support frame, the liquid inlet end of the peristaltic pump (24) is fixedly connected to the first port of the electric three-way ball valve I (14), the second port of the electric three-way ball valve I (14) is fixedly connected to the drilling fluid container, the liquid outlet end of the peristaltic pump (24) is fixedly connected to a quantitative cylinder (16), a quantitative liquid inlet portion is arranged inside the quantitative cylinder (16), and the quantitative cylinder (16) is fixedly connected to the upper cover (3) through a pipeline.

7. The automatic API fluid loss measuring device according to claim 6, characterized in that: The quantitative liquid inlet portion comprises a micro push rod (21), the micro push rod (21) is vertically arranged and the fixed end is fixedly connected to the support frame, the piston end of the micro push rod (21) is fixedly connected to the piston (18) via a piston fixing frame (20), and the piston (18) is sealingly slidably arranged in the quantitative cylinder (16).

8. The automatic API fluid loss measuring device according to claim 6, characterized in that: The cleaning mechanism comprises a clean water tank and a screw slide I (8), the clean water tank is fixedly connected to the third port of the electric three-way ball valve I (14), the fixed end of the screw slide I (8) is fixedly connected to the support frame, and the movable end of the screw slide I (8) is fixedly connected to a water receiving tray (19).

9. The API fluid loss automatic measuring device according to claim 5, characterized in that: The pressurizing mechanism comprises an air compressor, wherein an air outlet end of the air compressor is fixedly connected to one end of an electric ball valve II (10), the other end of the electric ball valve II (10) is fixedly connected to a first port of an electric three-way ball valve II (11), the second port of the electric three-way ball valve II (11) is fixedly connected to one end of an electric ball valve IV (6), the other end of the electric ball valve IV (6) is fixedly connected to the upper cover (3), and the third port of the electric three-way ball valve II (11) is fixedly connected to one end of an electric ball valve III (9).

10. The automatic API fluid loss measuring device according to claim 6, characterized in that: An electric ball valve I (17) and a pressure gauge (22) are provided on the pipeline connecting the metering cylinder (16) and the upper cover (3).

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