Fully Automated Oil-Water Solid Phase Analyzer and Testing Method

Abstract

This invention relates to the field of drilling fluid conventional performance measurement equipment technology, specifically a fully automatic oil-water solid phase measuring instrument and testing method. The instrument includes a base, a slurry cup, a stirring drive mechanism, a first drive mechanism, a second drive mechanism, a distillation tube, a center stake, and a measuring cylinder. The invention features a reasonable and compact structure. Drilling mud is injected into the slurry cup through the injection pipe. When the first measuring electrode detects that the liquid level has reached a set value, the injection stops. Then, the heating element is energized to raise the temperature. Driven by the stirring drive mechanism, the stirring teeth uniformly heat and evaporate the mud, causing water vapor or oil vapor to enter the distillation tube. The condensed water or oil drips into the measuring cylinder. The second driving mechanism moves the second measuring electrode up and down. The liquid level where the conductivity of the liquid in the measuring cylinder changes significantly is the interface between the oil and water levels. The position of the second measuring electrode is recorded, thus obtaining the volume of water or oil. The invention boasts a high degree of automation and is characterized by flexibility, compactness, and strong scalability.

Description

Technical Field

[0001] This invention relates to the field of drilling fluid conventional performance measurement equipment technology, and is a fully automatic oil-water-solid phase measuring instrument and testing method. Background Technology

[0002] Traditional methods for measuring the oil and water solid phases of drilling fluids involve using instruments such as solid phase measuring instruments, balances, and scrapers. These methods are complex and involve multiple steps, which cannot meet the requirements for collecting large amounts of performance data on drilling fluids and hinder the development of automation and informatization in the drilling fluid technical service industry.

[0003] The existing testing instruments are diverse in type, have scattered functions, are difficult to carry, have inconsistent repeatability, and have large errors in manual readings. These shortcomings seriously restrict the automation of the measurement industry, the informatization of drilling fluid technology, and the large-scale application of big data. Therefore, a fully automatic instrument that can meet the requirements of drilling fluid oil-water solid phase performance measurement has been developed. Summary of the Invention

[0004] This invention provides a fully automatic oil-water solid phase measuring instrument and testing method, which overcomes the shortcomings of the prior art and can effectively solve the problems of existing drilling fluid oil-water solid phase measuring instruments, such as many types, scattered functions, difficulty in carrying, and large errors in manual reading.

[0005] One of the technical solutions of this invention is achieved through the following measures: A fully automatic oil-water solid phase measuring instrument includes a base, a slurry cup, a stirring drive mechanism, a first drive mechanism, a second drive mechanism, a distillation tube, a central pile, and a measuring cylinder. A hollow slurry cup is fixedly installed at the front of the base. A cup lid is sealed and fixedly installed at the upper end of the slurry cup. A rotary joint is provided above the cup lid. A first mounting hole with internal and external communication is provided in the center of the cup lid. A cylindrical central pile with a closed lower end is sealed and rotatably installed at the lower end of the rotary joint. The lower end of the central pile passes through the first mounting hole and is located at the lower part of the slurry cup. Radially penetrating cleaning holes are discretely distributed on the outer side of the lower part of the central pile. A grouting pipe is fixedly connected to the front of the upper part of the slurry cup. A cup bottom is sealed and installed at the lower end of the slurry cup. A heating plate with its end extending out of the lower end of the cup bottom is provided on the inner side of the upper part of the cup bottom. A first fixing hole and a second fixing hole with internal and external communication are provided at intervals at the lower end of the cup lid. A sealed and fixed instrument is installed in the first fixing hole. A temperature and humidity sensor connected to a heating element is provided. A first measuring electrode for measuring the mud level in the slurry cup and connected to the heating element is sealed and fixedly installed in the second fixing hole. A first driving mechanism that can move the bottom of the cup up and down is provided at the bottom of the base. A stirring hole that runs vertically through the center of the bottom of the cup is provided. A stirring driving mechanism is fixedly installed at the bottom of the base corresponding to the position of the stirring hole. The upper end of the stirring shaft of the stirring driving mechanism passes through the stirring hole and is located below the central pile. Several stirring teeth are evenly distributed along the circumference on the outer side of the upper part of the stirring shaft corresponding to the position above the bottom of the cup. A measuring cylinder is fixedly installed at the rear of the base corresponding to the position behind the slurry cup. A second measuring electrode that can measure conductivity and a distillation tube connected to the upper end of the slurry cup are provided at intervals on the inner side of the upper end of the measuring cylinder. A second driving mechanism that can move the second measuring electrode up and down is provided at the rear of the base. A drain hole is provided at the lower end of the measuring cylinder. A waste liquid valve that can open and close the drain hole is provided at the bottom of the base.

[0006] The following are further optimizations and / or improvements to one of the above-mentioned technical solutions:

[0007] A first liquid receiving box can be fitted on the outside of the aforementioned stirring drive mechanism. The first liquid receiving box has an annular first liquid receiving groove with an upward opening. The upper end of the first liquid receiving box is sealed and fixedly connected to the lower end of the cup. Several first drain pipes are fixedly connected to the bottom of the first liquid receiving groove at intervals. The first drive mechanism includes a first drive motor, a first lead screw, a first lead screw nut, and a support frame. The first drive motor is fixedly installed on the base corresponding to the position between the first liquid receiving box and the stirring drive mechanism. The upper end of the output shaft of the first drive motor is connected to the lower end of the first lead screw located below the cup. An L-shaped support frame is fixedly installed at the lower end of the cup. A first lead screw nut screwed to the outer side of the upper end of the first lead screw is fixedly installed on the support frame.

[0008] The inner wall of the lower end of the aforementioned slurry cup can be a conical surface that is smaller at the top and larger at the bottom. The outer side of the cup bottom matches the inner wall of the lower end of the slurry cup. The outer diameter of the first liquid receiving groove is not less than the inner diameter of the lower end of the slurry cup. A U-shaped second liquid receiving box with an opening facing forward is fixedly installed on the lower part of the base corresponding to the position below the first liquid receiving box. The second liquid receiving box has a second liquid receiving groove with an opening facing upward and in a U-shape. The lower end of each first drain pipe is located in the second liquid receiving groove. Several second drain pipes are fixedly connected to the bottom of the second liquid receiving groove at intervals. A fixed seat with its upper end fixedly installed together with the lower side of the stirring drive mechanism is fixedly installed on the inner side of the second liquid receiving box. A mounting seat is fixedly installed on the lower part of the base corresponding to the position in front of the fixed seat. The upper side of the mounting seat is fixedly installed together with the lower side of the first drive motor. A third liquid receiving box is fixedly installed on the inner side of the lower part of the base corresponding to the position below the waste liquid valve. A third drain pipe is fixedly connected to the lower rear side of the third liquid receiving box.

[0009] The distillation tube may include a connecting section, a condensing section, and a manifold section. The front end of the connecting section is fixedly connected to the outer side of the upper part of the slurry cup, the rear end of the connecting section is fixedly connected to the front end of the condensing section which is inclined in a front-high-rear-low shape, and the rear end of the condensing section is fixedly connected to the upper end of the manifold section which is vertically set and whose lower end is located on the inner side of the upper part of the measuring cylinder.

[0010] A cleaning pipe can be fixedly connected to the above-mentioned connecting section. The cleaning pipe is equipped with a solenoid valve. Several heat sinks are arranged sequentially from front to back along the axial direction on the outside of the condensation section. Each heat sink is equipped with a cooling fan on the side away from the condensation section. Each cooling fan is connected to a temperature and humidity sensor.

[0011] The aforementioned second drive mechanism may include a second drive motor, a second lead screw, a second lead screw nut, and a guide rod. The second drive motor is fixedly installed on the rear side of the base. The upper end of the second drive motor is connected to the lower end of the second lead screw, which is rotatably mounted on the base. A vertically arranged guide rod is fixedly installed on the base corresponding to the position in front of the second lead screw. A sliding sleeve is coaxially fitted on the outer side of the guide rod. A second lead screw nut, which is screwed to the outer side of the second lead screw, is fixedly installed on the rear part of the sliding sleeve. The front part of the sliding sleeve is fixedly connected to the upper end of the second measuring electrode.

[0012] A cleaning motor can be fixedly installed on the upper part of the base corresponding to the position in front of the paddle cup. The outer side of the upper end of the output shaft of the cleaning motor is connected to the outer side of the upper part of the center pile through a pulley drive.

[0013] The second technical solution of the present invention is achieved through the following measures: a testing method for a fully automatic oil-water solid phase measuring instrument, comprising the following steps:

[0014] Step 1, distillation: The mud to be tested is injected into the slurry cup through the injection pipe. Then, the heating element and the stirring drive mechanism are started at the same time. The heating element heats the mud to be tested, and the stirring drive mechanism drives the stirring teeth to stir the mud to be tested. The temperature and humidity sensor monitors the temperature of the mud to be tested and the humidity of the slurry cup and controls the operation of the heating element.

[0015] Step 2, Measurement: The second drive mechanism moves the second measuring electrode up and down. When the conductivity measured by the second measuring electrode changes significantly, the lower end of the second measuring electrode is the oil-water interface. Record the position of the lower end of the second measuring electrode in the measuring cylinder and calculate the volume of water or oil.

[0016] The following are further optimizations and / or improvements to the second technical solution of the above invention:

[0017] After the above measurement work is completed, cleaning and drying work can be carried out. The cleaning work is carried out as follows: the second drive motor drives the second measuring electrode to rise, the waste liquid valve is opened, and the grouting pipe and the cleaning pipe are connected to the water-air pump. Clean water is injected into the central pile after being pressurized by the water-air pump. At the same time, the cleaning motor is started. The central pile rotates at a speed not exceeding 100 rpm for a period of time and then the cleaning motor is stopped. The stirring drive mechanism is started to drive the stirring teeth to repeatedly break and dissolve the solidified mud residue. At the same time, the solenoid valve on the cleaning pipe is opened, and clean water begins to clean the distillation tube. The cleaned liquid flows into the measuring cylinder along the condensation section and the confluence section to clean the measuring cylinder. Finally, the first drive motor is started, the bottom of the cup moves down, and the liquid in the grout cup flows into the third liquid receiving box after passing through the first liquid receiving tank, the first liquid receiving pipe, the second liquid receiving tank and the second liquid receiving pipe. The waste liquid valve is opened, and the liquid in the measuring cylinder flows into the third liquid receiving box.

[0018] The drying process is carried out as follows: After the liquid has drained, the bottom of the cup rises under the drive of the first drive motor and leaves a gap with the bottom of the cup. Open the waste liquid valve and the solenoid valve on the cleaning pipe, and the water pump starts to work. The heating element heats the gas, and the generated hot air enters the cup, distillation tube and measuring cylinder. When the hot air flows into the cup through the cleaning hole on the central pile, the cleaning motor drives the central pile to rotate, so that the hot air is evenly sprayed onto the inner wall of the cup.

[0019] The cleaning motor stops working, and the bottom of the cup rises under the drive of the first drive motor and closes with the lower end of the cup. The solenoid valve and waste liquid valve on the cleaning pipe are both closed.

[0020] In the above cleaning process: the stirring drive mechanism drives the stirring teeth to repeatedly break and dissolve the solidified mud residue at least five times. The stirring teeth stop for a period of time in each adjacent stirring process. In each stirring process, the stirring teeth rotate from slow to fast under the drive of the stirring drive mechanism.

[0021] During the distillation process described above, the cooling fan and the heating element can be started simultaneously. When the humidity is lower than the set value, the heating element stops heating, and when the temperature is lower than the set value, the cooling fan stops working.

[0022] This invention features a reasonable and compact structure. Slurry is injected into a slurry cup through an injection pipe. When the first measuring electrode detects that the liquid level has reached a set value, the injection stops. Then, the heating element is energized to raise the temperature. Driven by a stirring mechanism, the stirring teeth uniformly heat the slurry, causing the water vapor or oil vapor to evaporate and enter the distillation tube. The condensed water or oil drips into a measuring cylinder. A second driving mechanism moves the second measuring electrode up and down. The liquid level at which the conductivity of the liquid in the measuring cylinder changes significantly is the interface between the oil and water levels. The position of the second measuring electrode is recorded, thus obtaining the volume of water or oil. This invention boasts a high degree of automation and is characterized by flexibility, compactness, and strong scalability. Attached Figure Description

[0023] Appendix Figure 1 This is a schematic diagram of the main structure of Embodiment 1.

[0024] Appendix Figure 2 This is a top view of the structure of Example 1.

[0025] Appendix Figure 3 This is a schematic diagram of the left-side structure of Embodiment 1.

[0026] Appendix Figure 4 This is a three-dimensional structural diagram of Example 1 after the third liquid receiving box has been removed.

[0027] Appendix Figure 5 This is a cross-sectional view of the slurry cup in Example 1.

[0028] The codes in the attached diagram are as follows: 1 for base, 2 for slurry cup, 3 for measuring cylinder, 4 for rotary joint, 5 for cup lid, 6 for cup bottom, 7 for heating element, 8 for first measuring electrode, 9 for second measuring electrode, 10 for waste liquid valve, 11 for center stake, 12 for temperature and humidity sensor, 13 for stirring drive mechanism, 14 for stirring shaft, 15 for stirring teeth, 16 for fixed base, 17 for first liquid receiving box, 18 for second liquid receiving box, 19 for third liquid receiving box, and 20 for first drain pipe. 21 is the second drain pipe, 22 is the third drain pipe, 23 is the guide rod, 24 is the sliding sleeve, 25 is the connecting section, 26 is the condensation section, 27 is the manifold section, 28 is the cleaning pipe, 29 is the grouting pipe, 30 is the heat sink, 31 is the cooling fan, 32 is the first drive motor, 33 is the first lead screw, 34 is the first lead nut, 35 is the support frame, 36 is the mounting base, 37 is the second drive motor, 38 is the second lead screw, 39 is the second lead nut, and 40 is the cleaning motor. Detailed Implementation

[0029] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0030] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0031] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0032] Example 1: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, and 5, the fully automatic oil-water solid phase measuring instrument includes a base 1, a slurry cup 2, a stirring drive mechanism 13, a first drive mechanism, a second drive mechanism, a distillation tube, a central pile 11, and a measuring cylinder 3. A hollow slurry cup 2 is fixedly installed at the front of the base 1. A cup cover 5 is sealed and fixedly installed at the upper end of the slurry cup 2. A rotary joint 4 is located above the cup cover 5. A first mounting hole with internal and external communication is located in the center of the cup cover 5. A cylindrical central pile 11 with a closed lower end is rotatably installed at the lower end of the rotary joint 4. The lower end of the central pile 11 passes through the first mounting hole and is located at the lower part of the slurry cup 2. Radially penetrating cleaning holes are discretely distributed on the outer side of the lower part of the central pile 11. A grouting pipe 29 is fixedly connected to the front upper part of the slurry cup 2. A cup bottom 6 is sealed and installed at the lower end of the slurry cup 2. A heating element 7 with its end extending from the lower end of the cup bottom 6 is located on the inner side of the upper part of the cup bottom 6. A first fixing hole and a second fixing hole with internal and external communication are spaced apart at the lower end of the cup cover 5. A device connected to the heating element 7 is sealed and fixedly installed in the first fixing hole. A temperature and humidity sensor 12 is sealed and fixedly installed in the second fixing hole. A first measuring electrode 8 for measuring the mud level in the slurry cup 2 and connected to the heating element 7 is installed in the hole. The lower part of the base 1 is provided with a first driving mechanism that can move the bottom of the cup 6 up and down. The bottom of the cup 6 is provided with a stirring hole that runs through the center. A stirring driving mechanism 13 is fixedly installed at the lower part of the base 1 corresponding to the stirring hole. The upper end of the stirring shaft 14 of the stirring driving mechanism 13 passes through the stirring hole and is located below the center pile 11. A number of stirring teeth 15 are evenly distributed around the outer side of the upper part of the stirring shaft 14 corresponding to the position above the bottom of the cup 6. A measuring cylinder 3 is fixedly installed at the rear of the base 1 corresponding to the position behind the slurry cup 2. A second measuring electrode 9 for measuring conductivity and a distillation tube connected to the upper end of the slurry cup 2 are provided at intervals on the inner side of the upper end of the measuring cylinder 3. A second driving mechanism that can move the second measuring electrode 9 up and down is provided at the rear of the base 1. The lower end of the measuring cylinder 3 has a drain hole. A waste liquid valve 10 that can open and close the drain hole is provided at the lower part of the base 1.

[0033] According to the requirements, the stirring drive mechanism 13 is a known planetary geared motor, the first measuring electrode 8 is a known technology, such as the JH-YC series tuning fork level switch, the second measuring electrode 9 is a known technology, such as the DDG-403BA intelligent conductivity monitor, and the temperature and humidity sensor 12 is a known technology, such as the DB4201GS industrial-grade current-type temperature and humidity sensor. For ease of control and expansion, the first measuring electrode 8 and the temperature and humidity sensor 12 are electrically connected to the input terminal of a known microcontroller, and the output terminal of the microcontroller is connected to the heating element 7. During use, slurry is injected into the slurry cup 2 through the injection pipe 29. When the first measuring electrode 8 detects that the liquid level has reached the set value, the injection of slurry is stopped. Then, the heating element 7 is energized to raise the temperature. The stirring teeth 15 are slowly stirred under the drive of the stirring mechanism 13, so that the slurry is heated evenly and the water and oil are evaporated. The evaporated water vapor or oil vapor enters the distillation tube connected to the slurry cup 2. The condensed water or oil will drip into the measuring cylinder 3. Finally, the second measuring electrode 9 is moved up and down by the second driving mechanism. The liquid level when the conductivity of the liquid in the measuring cylinder 3 changes significantly is the interface between the oil and water levels. The position of the second measuring electrode 9 is then recorded. The position of the mud in the slurry cup 2 is determined by the volume of water or oil. By setting the heating element 7 and the temperature and humidity sensor 12, the mud in the slurry cup 2 can be heated according to the set value. The system is highly automated and easy to control. It is used in the field of automation and information technology transformation for measuring the percentage volume of oil, water, and solid phases of drilling fluids. After setting, the system can automatically repeat the functional test without manual intervention. The invention has a reasonable and compact structure, is easy to use, and has the characteristics of flexibility, small size, and strong scalability. It can realize fully automatic repeated testing of oil, water, and solid phases of drilling fluids, which greatly saves personnel costs and reduces the labor intensity of personnel. It has strong promotion and application value.

[0034] The above-mentioned fully automatic oil-water-solid phase measuring instrument can be further optimized and / or improved according to actual needs:

[0035] As attached Figure 1 , 2 As shown in Figures 3 and 4, a first liquid receiving box 17 is fitted on the outside of the stirring drive mechanism 13. The first liquid receiving box 17 has an annular first liquid receiving groove with an upward opening. The upper end of the first liquid receiving box 17 is sealed and fixedly connected to the lower end of the cup bottom 6. Several first drain pipes 20 are fixedly connected to the bottom of the first liquid receiving groove at intervals. The first drive mechanism includes a first drive motor 32, a first lead screw 33, a first lead screw nut 34, and a support frame 35. The first drive motor 32 is fixedly installed on the base 1 at the position between the first liquid receiving box 17 and the stirring drive mechanism 13. The upper end of the output shaft of the first drive motor 32 is connected to the lower end of the first lead screw 33 located below the cup bottom 6. An L-shaped support frame 35 is fixedly installed at the lower end of the cup bottom 6. A first lead screw nut 34 screwed to the outer side of the upper end of the first lead screw 33 is fixedly installed on the support frame 35.

[0036] According to the requirements, the first drive motor 32 is a known stepper motor. During use, by setting the first liquid receiving box 17 and the first drain pipe 20, the fluid in the slurry cup 2 can flow smoothly into the first liquid receiving tank during the up-and-down movement of the cup bottom 6, preventing the fluid from flowing into the stirring drive mechanism 13 or the first drive motor 32 and causing malfunction. By setting the first drive mechanism, the slurry cup 2 can be opened, which is convenient for cleaning the slurry cup 2. The setting of the support frame 35 allows for displacement space at the upper end of the first lead screw 33, so that the cup bottom 6 and the support frame 35 can move up and down when rotated.

[0037] As attached Figure 1 , 2 As shown in Figures 3, 4, and 5, the inner wall of the lower end of the paddle cup 2 is a conical surface that is smaller at the top and larger at the bottom. The outer side of the cup bottom 6 matches the inner wall of the lower end of the paddle cup 2. The outer diameter of the first liquid receiving groove is not less than the inner diameter of the lower end of the paddle cup 2. A U-shaped second liquid receiving box 18 with an opening facing forward is fixedly installed on the lower part of the base 1 corresponding to the position below the first liquid receiving box 17. The second liquid receiving box 18 has a second liquid receiving groove with an opening facing upward and in a U-shape. The lower end of each first drain pipe 20 is located in the second liquid receiving groove. The bottom of the second liquid receiving groove is fixedly connected to a fixed connection at intervals. A number of second drain pipes 21 are provided. A fixed base 16 is fixedly installed inside the second liquid receiving box 18. The upper end of the fixed base 1 is fixedly installed together with the lower side of the stirring drive mechanism 13. A mounting base 36 is fixedly installed at the lower part of the base 1 in front of the fixed base 16. The upper side of the mounting base 36 is fixedly installed together with the lower side of the first drive motor 32. A third liquid receiving box 19 is fixedly installed inside the lower part of the base 1 in the position below the waste liquid valve 10. A third drain pipe 22 is fixedly connected to the lower rear side of the third liquid receiving box 19.

[0038] As required, the fixed base 16 and the second liquid receiving box 18 are fixedly installed together near the inner ring surface of the stirring drive mechanism 13. During use, the lower inner wall of the slurry cup 2 is a conical surface that is smaller at the top and larger at the bottom. After the cup bottom 6 moves downward, the fluid in the slurry cup 2 can flow into the second liquid receiving tank along the channel between the slurry cup 2 and the cup bottom 6, which can play a guiding role and prevent the fluid from flowing into other positions. The second liquid receiving box 18 is U-shaped with an opening facing forward, which facilitates the installation of the stirring drive mechanism 13. By setting the second drain pipe 21, the liquid in the second drain tank can be collected and flow into the third liquid receiving box 19 to prevent the fluid from splashing. By setting the third drain pipe 22, the liquid in the third liquid receiving box 19 can be collected in a concentrated manner to reduce the pollution of the external environment.

[0039] As attached Figure 2 , 3As shown in Figures 4 and 5, the distillation tube includes a connecting section 25, a condensing section 26, and a confluence section 27. The front end of the connecting section 25 is fixedly connected to the outer side of the upper part of the slurry cup 2. The rear end of the connecting section 25 is fixedly connected to the front end of the condensing section 26, which is inclined in a front-high-rear-low shape. The rear end of the condensing section 26 is fixedly connected to the upper end of the confluence section 27, which is vertically set and whose lower end is located on the inner side of the upper part of the measuring cylinder 3.

[0040] During use, this setup allows the heated mud in the slurry cup 2 to flow into the measuring cylinder 3 via the distillation tube, facilitating subsequent measurement and analysis.

[0041] As attached Figure 1 , 2 As shown in Figures 3, 4, and 5, a cleaning pipe 28 is fixedly connected to the connecting section 25. A solenoid valve is provided on the cleaning pipe 28. Several heat sinks 30 are arranged sequentially from front to back along the axial direction on the outer side of the condensing section 26. Each heat sink 30 is provided with a cooling fan 31 on the side away from the condensing section 26. Each cooling fan 31 is connected to the temperature and humidity sensor 12.

[0042] As required, the heat sink 30 is a conventional electronic heat sink 30, and the cooling fan 31 has the opposite airflow direction. During use, this configuration improves the condensation efficiency of the condensation section 26.

[0043] As attached Figure 2 , 3 As shown in Figure 4, the second drive mechanism includes a second drive motor 37, a second lead screw 38, a second lead screw nut 39, and a guide rod 23. The second drive motor 37 is fixedly installed on the rear side of the base 1. The upper end of the second drive motor 37 is connected to the lower end of the second lead screw 38, which is rotatably mounted on the base 1. A vertically arranged guide rod 23 is fixedly installed on the base 1 corresponding to the position in front of the second lead screw 38. A sliding sleeve 24 is coaxially fitted on the outer side of the guide rod 23. A second lead screw nut 39, which is screwed to the outer side of the second lead screw 38, is fixedly installed on the rear part of the sliding sleeve 24. The front part of the sliding sleeve 24 is fixedly connected to the upper end of the second measuring electrode 9.

[0044] As required, the second drive mechanism is a known stepper motor with an encoder. During use, the second measuring electrode 9 is driven by the second drive motor 37 to rise and fall. When the conductivity of the liquid in the measuring cylinder 3 changes significantly, the liquid level is the interface between the oil and water levels. The encoder of the second drive motor 37 records the position, thereby obtaining the volume of water or oil. The measurement is convenient and the operation is simple.

[0045] As attached Figure 1 , 2 As shown in Figures 3 and 4, a cleaning motor 40 is fixedly installed on the upper part of the base 1 corresponding to the position in front of the paddle cup 2. The outer side of the upper end of the output shaft of the cleaning motor 40 is connected to the outer side of the upper part of the center pile 11 through a pulley drive.

[0046] During use, when clean water is injected into the center pile 11 to clean the inner wall of the slurry cup 2, the cleaning motor 40 can drive the center pile 11 to rotate, so that the clean water in the center pile 11 can clean the inner wall of the slurry cup 2 without dead angles through the cleaning hole, thereby improving the cleaning quality of the slurry cup 2 and facilitating the smooth conduct of the test below.

[0047] Example 2: As shown in the attached document Figure 1 , 2 As shown in Figures 3 and 4, the testing method of this fully automatic oil-water solid phase analyzer includes the following steps:

[0048] Step 1, Distillation: Slurry is injected into the slurry cup 2 through the injection pipe 29, with a set value of 25ml. The liquid level is measured by the first measuring electrode 8 on the slurry cup 2 to determine whether 25ml has been reached. Once the liquid level of 25ml is reached, the injection of slurry is stopped. Then, the heating element 7 embedded on the bottom 6 of the cup is energized to raise the temperature. The stirring teeth 15 are driven by the stirring drive mechanism 13 to slowly stir at a speed of 100rpm for 5 minutes. The slurry will be evenly heated under stirring, and the water and oil will evaporate. The evaporated water vapor or oil vapor enters the slurry cup. Inside the distillation tube connected to 2, the cooling fan 31 on the two heat sinks 30 surrounding the outside of the tube is powered on and starts to cool the heat sinks 30. The starting of the cooling fan 31 is simultaneous with the starting of the heating element 7. The condensed water or oil drips into the measuring cylinder 3 through the manifold 27. The waste liquid valve 10 at the lower end of the measuring cylinder 3 is normally closed. The temperature and humidity sensor 12 controls the temperature of the mud within a safe range and tests the humidity in the mud cup 2. When the humidity is lower than a certain value, the heating element 7 stops heating. When the temperature is lower than 100 degrees, the cooling fan 31 stops working.

[0049] Step two, measurement: The liquid level test in graduated cylinder 3 is performed by the second measuring electrode 9. The second measuring electrode 9 is driven by the second drive motor 37 to rise and fall. The liquid level where the conductivity changes significantly is the interface between the oil and water levels. This determines whether the oil or water level has been reached. The encoder of the second drive motor 37 records the position, thereby obtaining the volume of water or oil.

[0050] After the measurement is completed, cleaning and drying can be carried out. Cleaning: After the test is completed, the second measuring electrode 9 rises to the middle position under the drive of the second drive motor 37, the waste liquid valve 10 is in the open state, the water-air pump input route is controlled by the three-way solenoid valve, switching to the water circuit, the water-air pump starts to work, clean water is pressurized by the water-air pump and injected into the center pile 11 through the rotary joint 4. At this time, the center pile 11 starts to rotate under the drive of the cleaning motor 40, the maximum rotation speed is 100 rpm, and clean water is sprayed from the cleaning hole on the center pile 11 to the four walls of the slurry cup 2 for cleaning. After 10 seconds, the water-air pump stops injecting water, and the cleaning motor 40 stops rotating. After 1 minute, the stirring shaft 14 starts to rotate under the drive of the stirring drive mechanism 13, driving the stirring teeth 15 to break and dissolve the solidified mud residue. The initial speed is 60 rpm, after 30 seconds it becomes 150 rpm, after another 30 seconds it becomes 300 rpm, and then it runs intermittently every 10 seconds. After repeating the operation 5 times, the rotation stops. Ten seconds later, driven by the first drive motor 32, the bottom of the cup 6 moves down 10mm. At the same time, the water pump and the cleaning motor 40 start running again. Driven by the central pile 11, the clean water rotates to clean the inner wall of the slurry cup 2. The cleaning liquid flows around the slurry cup 2, through the first receiving tank, the first receiving pipe, the second receiving tank and the second receiving pipe, and then flows into the third receiving box 19. This process lasts for 1 minute. While this process is in progress, the solenoid valve on the cleaning pipe 28 is opened, allowing the clean water to start cleaning the distillation tube. The cleaning liquid flows into the measuring cylinder 3 along the condensation section 26 and the manifold section 27 to clean the measuring cylinder 3. After this, the solenoid valve on the cleaning pipe 28 remains open. After the inner wall of the paddle cup 2 is cleaned for 1 minute, the water pump and the cleaning motor 40 continue to work. The bottom of the cup 6 rises under the drive of the first drive motor 32 and stops at a position about 2 mm from the bottom of the paddle cup 2. The stirring drive mechanism 13 works again at a speed of 300 rpm, allowing the clean water in the paddle cup 2 to thoroughly clean the paddle cup 2 under the drive of the stirring teeth 15. The cycle is repeated for 10 seconds every 20 seconds, and then repeated 5 times. After cleaning is completed, the water pump is turned off, the cleaning motor 40 stops, and the bottom of the cup 6 descends again to a position 5 mm from the bottom of the paddle cup 2 under the drive of the first drive motor 32. It remains still for 1 minute to allow the cleaning liquid to drain completely.

[0051] Drying Process: After the cleaning solution has completely drained, the bottom of the cup 6, driven by the first drive motor 32, rises to a position 2mm below the bottom of the slurry cup 2. At this time, the waste liquid valve 10 and the solenoid valve on the cleaning pipe 28 are both open. The three-way solenoid valve on the water-air pump input path is switched to the air path. Simultaneously, the heating element 7 is energized and begins heating. The water-air pump starts working, and the airflow temperature is controlled at 60℃ by the temperature sensor. Under the pressure of the water-air pump, the airflow reaches the center post 11 through the rotary joint 4. The cleaning motor 40 starts rotating the center post 11 at a speed of 100rpm. The airflow passes through the cleaning hole of the center post 11 and sprays onto the inner wall of the slurry cup 2 and the bottom of the cup 6 to achieve the purpose of drying them. The hot airflow also flows into the distillation tube and the measuring cylinder 3 through the cleaning pipe 28 to achieve the purpose of drying the inner wall of the distillation tube, the inner wall of the measuring cylinder 3, and the second measuring electrode 9. After working for 3 minutes, the drying process ends. The cleaning motor 40 stops working, the bottom of the cup 6 rises under the drive of the first drive motor 32 and closes with the lower end of the slurry cup 2, the solenoid valve and waste liquid valve 10 on the cleaning pipe 28 are closed, the whole work is completed, and we wait for the next experiment.

[0052] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A full-automatic oil-water solid phase measuring instrument, characterized in that The utility model provides a mud mixing device, which comprises a base, a slurry cup, a stirring driving mechanism, a first driving mechanism, a second driving mechanism, a distillation pipe, a central stake and a measuring cylinder, the slurry cup is fixedly installed at the front of the base in a hollow structure, a cup cover is fixedly and sealingly installed at the upper end of the slurry cup, a rotary joint is arranged above the cup cover, a first mounting hole communicating between the inside and outside is arranged in the center of the cup cover, the central stake in a cylindrical structure with a closed lower end is sealingly and rotatably installed at the lower end of the rotary joint, the lower end of the central stake is sealingly arranged below the slurry cup after passing through the first mounting hole, the lower part of the central stake is discretely provided with cleaning holes penetrating in the radial direction, a grouting pipe is fixedly and sealingly communicated with the front side of the upper part of the slurry cup, a cup bottom is sealingly installed at the lower end of the slurry cup, a heating sheet extending out of the lower end of the cup bottom is arranged on the inner side of the upper part of the cup bottom, the lower end of the cup cover is provided with a first fixing hole and a second fixing hole penetrating in the up-down direction, a temperature and humidity sensor connected with the heating sheet is sealingly and fixedly installed in the first fixing hole, a first measuring electrode for measuring the liquid level of the slurry in the slurry cup and connected with the heating sheet is sealingly and fixedly installed in the second fixing hole, the first driving mechanism enabling the cup bottom to move up and down is arranged at the lower part of the base, a stirring hole penetrating in the up-down direction is arranged in the center of the cup bottom, the stirring driving mechanism is fixedly installed at the lower part of the base corresponding to the position of the stirring hole, the stirring shaft of the stirring driving mechanism is sealingly arranged below the central stake after passing through the stirring hole, a plurality of stirring teeth are uniformly distributed and spaced apart along the circumference on the outer side of the upper part of the stirring shaft corresponding to the position above the cup bottom, the measuring cylinder is fixedly installed at the rear of the base corresponding to the position behind the slurry cup, the second measuring electrode capable of measuring the electrical conductivity and the distillation pipe communicating with the upper end of the slurry cup are arranged at the inner side of the upper end of the measuring cylinder, the second driving mechanism enabling the second measuring electrode to move up and down is arranged at the rear of the base, the lower end of the measuring cylinder is provided with a liquid discharge hole, and the waste liquid valve capable of opening and closing the liquid discharge hole is arranged at the lower part of the base.

2. The full-automatic oil-water solid phase measuring instrument according to claim 1, characterized in that The first liquid receiving box is sleeved outside the stirring driving mechanism, the annular first liquid receiving groove with an opening upward is arranged in the first liquid receiving box, the upper end of the first liquid receiving box is sealingly and fixedly connected with the lower end of the cup bottom, and the bottom of the first liquid receiving groove is fixedly and spacedly communicated with a plurality of first liquid discharge pipes.

3. The full-automatic oil-water solid phase measuring instrument according to claim 2, characterized in that The inner wall of the lower end of the cup is a tapered surface with a small upper end and a large lower end, the outer side of the bottom of the cup matches the inner wall of the lower end of the cup, the outer diameter of the first liquid receiving groove is not less than the inner diameter of the lower end of the cup, the lower part of the base corresponding to the position of the lower part of the second liquid receiving box is fixedly installed with a U-shaped second liquid receiving box with an opening forward, the second liquid receiving box has a U-shaped second liquid receiving groove with an upward opening, the lower end of each first liquid discharging pipe is located in the second liquid receiving groove, the bottom of the second liquid receiving groove is fixedly and continuously connected with a plurality of second liquid discharging pipes, the inner side of the second liquid receiving box is fixedly installed with a fixed seat whose upper end is fixedly installed with the lower side of the stirring driving mechanism, the lower part of the base corresponding to the position in front of the fixed seat is fixedly installed with a mounting seat, the upper side of the mounting seat is fixedly installed with the lower side of the first driving motor, the lower part of the base corresponding to the position below the waste liquid valve is fixedly installed with a third liquid receiving box, and the lower part of the rear side of the third liquid receiving box is fixedly and continuously connected with a third liquid discharging pipe.

4. The full-automatic oil-water solid phase measuring instrument according to claim 1 or 2 or 3, characterized in that The distillation pipe comprises a connecting section, a condensing section and a converging section, the front end of the connecting section is fixedly and continuously connected with the upper part of the outer side of the cup, the rear end of the connecting section is fixedly and continuously connected with the front end of the condensing section which is inclined in a shape of high front and low rear, and the rear end of the condensing section is fixedly and continuously connected with the upper end of the converging section which is vertically arranged and has the lower end located in the upper part of the inner side of the measuring cylinder.

5. The full-automatic oil-water solid phase measuring instrument according to claim 4, characterized in that The connecting section is fixedly and continuously connected with a cleaning pipe, the cleaning pipe is provided with an electromagnetic valve, a plurality of heat dissipation fins are arranged on the outer side of the condensing section in an axial direction from front to rear, one side of each heat dissipation fin away from the condensing section is provided with a heat dissipation fan, and each heat dissipation fan is connected with a temperature and humidity sensor.

6. The full-automatic oil-water solid phase measuring instrument according to claim 1 or 2 or 3 or 5, characterized in that The second driving mechanism comprises a second driving motor, a second screw rod, a second nut and a guide rod, the rear side of the base is fixedly installed with the second driving motor, the upper end of the second driving motor is in transmission connection with the lower end of the second screw rod which is rotatably installed on the base, the upper part of the base corresponding to the position in front of the second screw rod is fixedly installed with a vertically arranged guide rod, the outer side of the guide rod is coaxially sleeved with a sliding sleeve, the rear part of the sliding sleeve is fixedly installed with the second nut which is screwed on the outer side of the second screw rod, and the front part of the sliding sleeve is fixedly connected with the upper end of the second measuring electrode; or / and, the upper part of the base corresponding to the position in front of the cup is fixedly installed with a cleaning motor, and the outer side of the upper end of the output shaft of the cleaning motor is in transmission connection with the outer side of the upper part of the center pile through a belt wheel.

7. The full-automatic oil-water solid phase measuring instrument according to claim 4, characterized in that The second driving mechanism comprises a second driving motor, a second screw rod, a second nut and a guide rod, the rear side of the base is fixedly installed with the second driving motor, the upper end of the second driving motor is in transmission connection with the lower end of the second screw rod which is rotatably installed on the base, the upper part of the base corresponding to the position in front of the second screw rod is fixedly installed with a vertically arranged guide rod, the outer side of the guide rod is coaxially sleeved with a sliding sleeve, the rear part of the sliding sleeve is fixedly installed with the second nut which is screwed on the outer side of the second screw rod, and the front part of the sliding sleeve is fixedly connected with the upper end of the second measuring electrode; or / and, the upper part of the base corresponding to the position in front of the cup is fixedly installed with a cleaning motor, and the outer side of the upper end of the output shaft of the cleaning motor is in transmission connection with the outer side of the upper part of the center pile through a belt wheel.

8. A method of testing a fully automatic oil-water solid phase measuring instrument according to any one of claims 1 to 7, characterized in that The method comprises the following steps: Step one, distillation: the mud to be measured is injected into the cup through the grouting pipe, then the heating piece and the stirring driving mechanism are started at the same time, the heating piece heats the mud to be measured, the stirring driving mechanism drives the stirring teeth to stir the mud to be measured, the temperature and humidity sensor monitors the temperature of the mud to be measured and the humidity of the cup and controls the operation of the heating piece; Step two, measurement: the second drive mechanism drives the second measuring electrode to move up and down, when the conductivity measured by the second measuring electrode changes significantly, the lower end of the second measuring electrode is the oil-water interface, the position of the lower end of the second measuring electrode in the measuring cylinder is recorded, and the volume of water or the volume of oil is calculated.

9. The test method of claim 8, wherein After the measurement is completed, cleaning and drying are performed. The cleaning is performed as follows: the second drive motor drives the second measuring electrode to rise, the waste liquid valve is opened, the grouting pipe and the cleaning pipe are connected to the water pump, clean water is injected into the center pile under the pressure of the water pump, the cleaning motor is started, the center pile rotates at a speed not higher than 100 rpm for a period of time, and then the cleaning motor is stopped. The stirring drive mechanism drives the stirring teeth to repeatedly break and dissolve the solidified mud residue for multiple times. At the same time, the electromagnetic valve on the cleaning pipe is opened, and clean water starts to clean the distillation pipe. The cleaned liquid flows into the measuring cylinder along the condensing section and the converging section, and the measuring cylinder is cleaned. Finally, the first drive motor is started, the cup bottom moves down, and the liquid in the slurry cup flows into the third liquid box through the first liquid receiving groove, the first liquid receiving pipe, the second liquid receiving groove, and the second liquid receiving pipe. The waste liquid valve is opened, and the liquid in the measuring cylinder flows into the third liquid box. The drying is performed as follows: after the liquid is drained, the cup bottom rises under the drive of the first drive motor and leaves a gap with the lower end of the slurry cup. The waste liquid valve and the electromagnetic valve on the cleaning pipe are opened, the water pump starts to work, and the heating sheet heats the gas. The hot gas stream enters the slurry cup, the distillation pipe, and the measuring cylinder. When the hot gas stream flows into the slurry cup through the cleaning hole on the center pile, the cleaning motor drives the center pile to rotate, so that the hot gas stream uniformly sprays onto the inner wall of the slurry cup. The cleaning motor stops working, the cup bottom rises under the drive of the first drive motor and closes with the lower end of the slurry cup, and the electromagnetic valve on the cleaning pipe and the waste liquid valve are closed.

10. The test method of claim 9, wherein In the cleaning process: the stirring drive mechanism drives the stirring teeth to repeatedly break and dissolve the solidified mud residue for at least five times. The stirring teeth stop for a period of time during the adjacent two stirring processes, and the stirring teeth rotate from slow to fast under the drive of the stirring drive mechanism during each stirring process. Or / and, the heat dissipation fan and the heating sheet are started at the same time during the distillation process. When the humidity is lower than the set value, the heating sheet stops heating. When the temperature is lower than the set value, the heat dissipation fan stops working.

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