Pretreatment system for measuring salt content of crude oil

Abstract

The utility model relates to the technical field of automatic laboratories, and discloses a pretreatment system for measuring the salt content of crude oil, which comprises a rack and a working table, and a centrifugal tube array, a suction head array, a solvent container array, a metal bath unit, a vortex mixer, a centrifugal tube uncovering unit and a centrifugal machine are respectively arranged on the working table. The rack is provided with a movable operation unit, the movable operation unit comprises a liquid suction gun and a clamping jaw cap screwing mechanism, the centrifugal tube array, the suction head array and the solvent container array are located on one side of the working table, the centrifugal machine is located on the other side of the working table, and the metal bath unit, the vortex mixing instrument and the centrifugal tube uncovering unit are located in the middle of the working table. Through automatic system integration, automation of a series of operations such as liquid adding, heating, mixing and centrifuging is realized, the pretreatment efficiency is improved, and a guarantee is provided for the accuracy of subsequent salt content data.

Description

Technical Field

[0001] The utility model relates to the technical field of automated laboratories, in particular to a crude oil salt content determination pretreatment system. Background Art

[0002] Salt content is an important indicator for testing crude oil. Salts in crude oil are generally dissolved in the water contained in the crude oil, and sometimes some of them are suspended in the crude oil in the form of fine particles. The presence of salt in crude oil is very harmful to the processing process.

[0003] When testing the salt content in crude oil, the existing testing equipment must go through a pre-treatment process, including the addition of solvent, heating, mixing, centrifugation and other operations, which are completed manually or semi-automatically by operators. The efficiency is low and the pre-treatment consistency is poor, which will cause inaccurate adverse factors for subsequent salt content test data. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a crude oil salt content determination pretreatment system, which realizes the automation of a series of operations such as liquid addition, heating, mixing, centrifugation, etc. through automation system integration, improves the pretreatment efficiency, and provides a guarantee for the accuracy of subsequent salt content data.

[0005] The technical solution adopted by the utility model is:

[0006] A crude oil salt content determination pretreatment system is characterized in that it comprises a frame and a workbench, wherein a centrifuge tube array, a suction head array, a solvent container array, a metal bath unit, a vortex mixer, a centrifuge tube cover opening unit and a centrifuge are arranged on the workbench respectively, a mobile operation unit is arranged on the frame, and the mobile operation unit comprises a liquid suction gun and a clamping claw screwing mechanism, the centrifuge tube array, the suction head array and the solvent container array are located on one side of the workbench, and the centrifuge is located on the other side of the workbench, the metal bath unit, the vortex mixer and the centrifuge tube cover opening unit are located in the middle of the workbench, the clamping claw screwing mechanism of the mobile operation unit opens the solvent container cover in the solvent container array, grabs a centrifuge tube from the centrifuge tube array and sends it to the centrifuge tube cover opening unit, after the cover is opened by the clamping claw screwing mechanism, the liquid suction gun cooperates with the suction head on the suction head array to transfer the crude oil in the solvent container to the centrifuge tube and screw the cover, and then sends it to the metal bath unit for heating, to the vortex mixer for oscillation, to the centrifuge for centrifugal stratification, and finally returns to the original position of the centrifuge tube array by the clamping claw screwing mechanism.

[0007] Furthermore, a recycling box is provided on one side of the suction head array, and the suction gun completes a flow transfer operation and discards the suction head into the recycling box.

[0008] Furthermore, a container cover rack is arranged on the side of each solvent container on the solvent container array. After the clamping claw screwing cover mechanism opens the solvent container, the solvent container cover is placed on the container cover rack. After the transfer is completed, the clamping claw screwing cover mechanism removes the container cover from the container cover rack and closes it on the solvent container.

[0009] Furthermore, the centrifuge tube opening unit comprises a base and a chuck, and when the clamping claw capping mechanism screws the cap on the centrifuge tube, the chuck clamps the centrifuge tube.

[0010] Furthermore, the centrifuge includes a positioning mechanism, which rotates the centrifuge to a predetermined position when the clamping and capping mechanism is placed into the centrifuge tube, centrifugation is completed, and the clamping and capping mechanism is taken out of the centrifuge tube.

[0011] Furthermore, the tube insertion hole of the centrifuge is set at an angle, and the mobile operation unit also includes a mobile frame and a rotating shaft. The mobile frame is set on the crossbeam of the frame, and the clamping claw and capping mechanism is set on the mobile frame through the rotating shaft. The rotating shaft drives the clamping claw and capping mechanism to rotate to cooperate with the tube insertion hole of the centrifuge to realize the taking and placing of the centrifuge tube.

[0012] Furthermore, the number of centrifuge tubes in the centrifuge tube array is an integer multiple of the number of solvent containers in the solvent container array.

[0013] Furthermore, the integer multiple is 3 times.

[0014] The beneficial effects of the utility model are:

[0015] (1) Through the integration of automation systems, a series of operations such as liquid addition, heating, mixing, and centrifugation can be automated;

[0016] (2) Greatly improve the pre-treatment efficiency and provide guarantee for the accuracy of subsequent salt content data;

[0017] (3) Reasonable layout enables unmanned operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a three-dimensional structural schematic diagram of the crude oil salt content determination pretreatment system of the utility model;

[0019] Attached Figure 2 It is a partial enlarged view of the main modules of the system;

[0020] Attached Figure 3 It is a partial enlarged view of the mobile operation unit;

[0021] Attached Figure 4 It is a partial enlarged view of the centrifuge location;

[0022] Attached Figure 5 is an assembly drawing of the mobile operating unit;

[0023] Attached Figure 6 It is a schematic diagram of the mobile operating unit viewed from the bottom up.

[0024] The reference numerals in the accompanying drawings are:

[0025] 1. Frame; 2. Workbench;

[0026] 3. Centrifuge tube array; 4. Tip array;

[0027] 5. Recovery box; 6. Solvent container array;

[0028] 7. Metal bath unit; 8. Vortex mixer;

[0029] 9. Centrifuge tube cover opening unit; 10. Mobile operation unit;

[0030] 11. Liquid suction gun; 12. Gripping claw capping mechanism;

[0031] 13. Centrifuge tube; 14. Solvent container;

[0032] 15. Lifting door; 16. Container cover rack;

[0033] 17. Centrifuge; 18. Chuck;

[0034] 19. Positioning mechanism; 20. Moving frame;

[0035] 21. Pivot. DETAILED DESCRIPTION

[0036] The specific implementation of the crude oil salt content determination pretreatment system of the utility model is described in detail below with reference to the accompanying drawings.

[0037] See attached Figure 1 , 2The crude oil salt content determination pretreatment system comprises a frame 1 and a workbench 2, on which a centrifuge tube array 3, a pipette tip array 4, a recovery box 5, a solvent container array 6, a metal bath unit 7, a vortex mixer 8, a centrifuge tube cover opening unit 9 and a centrifuge 17 are arranged respectively, and a mobile operation unit 10 is arranged on the frame 1, and the mobile operation unit 10 comprises a liquid suction gun 11 and a clamping claw cover screwing mechanism 12, the centrifuge tube array 3, the pipette tip array 4, the recovery box 5, and the solvent container array 6 are located on one side of the workbench 2, and the centrifuge 17 is located on the other side of the workbench 2, and the metal bath unit 7, the vortex mixer 8, the centrifuge tube The opening unit 9 is located in the middle of the workbench 2. The clamping and capping mechanism 12 of the moving operation unit 10 opens the solvent container cover in the solvent container array 6, grabs a centrifuge tube 13 from the centrifuge tube array 3 and sends it to the centrifuge tube opening unit 9. After the cover is opened by the clamping and capping mechanism 12, the crude oil in the solvent container 14 is transferred to the centrifuge tube 13 through the pipette gun 11 in cooperation with the pipette tip on the pipette tip array 4 and the cap is screwed. Then, the pipette is sent to the metal bath unit 7 for heating, sent to the vortex mixer 8 for oscillation, sent to the centrifuge 17 for centrifugal stratification, and finally returned to the original position of the centrifuge tube array 3 through the clamping and capping mechanism 12.

[0038] A lifting door 15 is provided in front of the rack 1, and an operator processes the samples inside through the lifting door 15.

[0039] See attached Figure 3 In order to reduce the number and complexity of the components of the mobile operation unit 10, the mobile operation unit 10 is only equipped with a liquid suction gun 11 and a clamping claw capping mechanism 12. Therefore, after opening the cover of the solvent container 14, the clamping claw capping mechanism 12 must be released. A container cover rack 16 is set on the side of each solvent container 14 on the solvent container array 6. After the clamping claw capping mechanism 12 opens the solvent container 14, the solvent container cover is placed on the container cover rack 16. After the liquid transfer is completed, the clamping claw capping mechanism 12 removes the container cover from the container cover rack 16 and closes it on the solvent container 14.

[0040] See attached Figure 2 The centrifuge tube opening unit 9 includes a base and a chuck 18 . When the clamping claw capping mechanism 12 caps the centrifuge tube 13 , the chuck 18 clamps the centrifuge tube 13 .

[0041] See attached Figure 4 The centrifuge 17 includes a positioning mechanism 19. When the clamping and capping mechanism 12 is placed into the centrifuge tube 13, centrifugation is completed, and the clamping and capping mechanism 12 takes out the centrifuge tube 13, the positioning mechanism 19 rotates the centrifuge 17 to a predetermined position.

[0042] Since the insertion hole of the centrifuge tube 13 of the centrifuge 17 is designed to be inclined, the clamping claw capping mechanism 12 of the mobile operation unit 10 is required to be able to insert the centrifuge tube 13 into the insertion hole of the centrifuge 17 at an angle.

[0043] See attached Figure 5 , 6 The mobile operation unit 10 also includes a mobile frame 20 and a rotating shaft 21. The mobile frame 20 is arranged on the crossbeam of the frame 1. The clamping claw and screwing cover mechanism 12 is arranged on the mobile frame 20 through the rotating shaft 21. The rotating shaft 21 drives the clamping claw and screwing cover mechanism 12 to rotate to cooperate with the insertion hole of the centrifuge 17 to realize the taking and placing of the centrifuge tube 13.

[0044] The centrifuge 17 and the metal bath unit 7 are all equipped with multiple centrifuge tubes 13 that work simultaneously. Therefore, the multiple centrifuge tubes 13 in the centrifuge tube array 3 correspond to one solvent container 14 in the solvent container array 6, that is, during the experiment, after the solvent container is opened, the centrifuge tubes 13 are filled with liquid in multiple times. The number of centrifuge tubes 13 in the centrifuge tube array 3 is an integral multiple of the number of solvent containers 14 in the solvent container array 6. According to conventional experiments, generally one solvent container 14 is used to fill three centrifuge tubes 13.

[0045] In the embodiment of the present patent, the metal bath unit 7 can process 9 centrifuge tubes 13 at the same time, and the centrifuge 17 can process 8 centrifuge tubes 13 at the same time.

[0046] The specific automation operation process is as follows:

[0047] The first step: the clamping claw capping mechanism 12 of the moving operation unit 10 opens the solvent container caps in the solvent container array 6 , and places the solvent container caps on the container cap rack 16 .

[0048] Step 2: grab a centrifuge tube 13 from the centrifuge tube array 3 and send it to the centrifuge tube opening unit 9. After the centrifuge opening unit fixes the centrifuge tube 13 through the chuck 18, the clamping claw screwing mechanism 12 opens the cap and keeps grabbing the cap. The centrifuge tubes 13 in the centrifuge tube array 3 have been pre-filled with crude oil.

[0049] Step 3: The pipette gun 11 is equipped with a pipette tip from the pipette tip array 4 to transfer the crude oil in the solvent container 14 to the centrifuge tube 13 .

[0050] Step 4: The suction gun 11 returns the suction head to the recovery box 5.

[0051] Step 5: The clamping claw screwing mechanism 12 screws the cover onto the centrifuge tube 13 .

[0052] Step 6: The clamping capping mechanism 12 delivers the centrifuge tube 13 to the metal bath unit 7.

[0053] After the third to sixth steps are completed, the centrifuge tube 13 is filled with liquid and sent to the metal bath unit 7. The metal bath unit 7 does not work first, and the third to sixth steps are repeated until the metal bath is filled with centrifuge tubes 13 or a definite working instruction is obtained.

[0054] Step 7: The metal bath unit 7 heats the centrifuge tube 13 .

[0055] Step 8: The clamping capping mechanism 12 delivers the heated centrifuge tube 13 to the vortex mixer 8 for oscillation.

[0056] Step 9: The positioning mechanism 19 of the centrifuge 17 determines the positioning position.

[0057] Step 10: The rotating shaft 21 of the moving operation unit 10 drives the clamping claw capping mechanism 12 to rotate to a predetermined angle, and the centrifuge tube 13 is inserted into the tube insertion hole of the centrifuge 17 .

[0058] After the eighth to tenth steps are completed, the centrifuge tubes 13 in the metal bath unit 7 are vortex mixed and then sent to the centrifuge 17. Repeat the eighth to tenth steps until the centrifuge 17 is filled with eight centrifuge tubes 13, and the centrifuge 17 starts to work. The centrifuge tubes 13 in the centrifuge 17 are preferably placed symmetrically, for example, four are placed at intervals, and the centrifuge 17 can also work.

[0059] Step 11: The centrifuge 17 starts to operate and centrifuge the centrifuge tube 13.

[0060] Step 12: After centrifugation is completed, the positioning mechanism 19 of the centrifuge 17 determines the positioning position.

[0061] Step 13: The moving operation unit 10 drives the clamping claw capping mechanism 12 to take out the centrifuge tube 13 from the centrifuge 17 and put it back to the original position of the centrifuge tube array 3.

[0062] See attached Figure 4 The centrifuge 17 of this patent is an eight-position centrifuge. The centrifuge 17 achieves precise positioning through its positioning control method, that is, when the clamping claw capping mechanism 12 is placed in the centrifuge tube 13, the clamping claw capping mechanism 12 is kept coaxial with the insertion hole of the centrifuge 17 through its positioning mechanism 19, and then the positioning mechanism 19 drives the centrifuge 17 to rotate one-eighth of the circumference, that is, a 45-degree angle, and then inserts the second centrifuge tube 13, and so on. After the centrifuge 17 is centrifuged, it is positioned at the first centrifuge tube 13 through the positioning mechanism 19. The positioning control method of the centrifuge 17 can be found in the applicant's patent: 2020111506991, positioning centrifuge and its positioning control method.

[0063] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A crude oil salt content determination pretreatment system, characterized by: The invention comprises a frame and a workbench, on which a centrifuge tube array, a suction head array, a solvent container array, a metal bath unit, a vortex mixer, a centrifuge tube cover opening unit and a centrifuge are respectively arranged; a mobile operation unit is arranged on the frame, and the mobile operation unit comprises a liquid suction gun and a clamping claw screwing cover mechanism; the centrifuge tube array, the suction head array and the solvent container array are located on one side of the workbench, and the centrifuge is located on the other side of the workbench; the metal bath unit, the vortex mixer and the centrifuge tube cover opening unit are located in the middle of the workbench; the clamping claw screwing cover mechanism of the mobile operation unit opens the solvent container cover in the solvent container array, grabs a centrifuge tube from the centrifuge tube array and sends it to the centrifuge tube cover opening unit; after the cover is opened by the clamping claw screwing cover mechanism, the crude oil in the solvent container is transferred to the centrifuge tube by the liquid suction gun in cooperation with the suction head on the suction head array and the cover is screwed, and then the centrifuge tube is sequentially sent to the metal bath unit for heating, sent to the vortex mixer for oscillation, sent to the centrifuge for centrifugal stratification, and finally returned to the original position of the centrifuge tube array by the clamping claw screwing cover mechanism.

2. The crude oil salt content determination pretreatment system according to claim 1, characterized in that: A recycling box is arranged on one side of the suction head array, and the suction gun discards the suction head into the recycling box after completing a flow transfer operation.

3. The crude oil salt content determination pretreatment system according to claim 1, characterized in that: A container cover rack is arranged on the side of each solvent container on the solvent container array. After the clamping claw screwing cover mechanism opens the solvent container, the solvent container cover is placed on the container cover rack. After the transfer is completed, the clamping claw screwing cover mechanism removes the container cover from the container cover rack and closes it on the solvent container.

4. The crude oil salt content determination pretreatment system according to claim 1, characterized in that: The centrifuge tube opening unit comprises a base and a chuck. When the clamping claw capping mechanism caps the centrifuge tube, the chuck clamps the centrifuge tube.

5. The crude oil salt content determination pretreatment system according to claim 1, characterized in that: The centrifuge comprises a positioning mechanism, and when the clamping claw screwing cap mechanism puts the centrifuge tube in, centrifuges, and takes out the centrifuge tube after centrifugation, the positioning mechanism rotates the centrifuge to a predetermined position.

6. The crude oil salt content determination pretreatment system according to any one of claims 1 to 5, characterized in that: The tube insertion hole of the centrifuge is set at an angle, and the mobile operation unit also includes a mobile frame and a rotating shaft. The mobile frame is set on the crossbeam of the frame, and the clamping claw and capping mechanism is set on the mobile frame through the rotating shaft. The rotating shaft drives the clamping claw and capping mechanism to rotate to cooperate with the tube insertion hole of the centrifuge to realize the taking and placing of the centrifuge tube.

7. The crude oil salt content determination pretreatment system according to claim 6, characterized in that: The number of centrifuge tubes in the centrifuge tube array is an integer multiple of the number of solvent containers in the solvent container array.

8. The crude oil salt content determination pretreatment system according to claim 7, characterized in that: The integer multiple is 3 times.

Images