CN201555786U - Viscosity testing device capable of automatically and continuously supplying samples - Google Patents

Abstract

The utility model relates to a viscosity test device of automatic continuous sample supply of crude oil pipeline transportation process simulation and automatic test. A cleaning and drying control part (3) which fixes the lifting and rotating part (1) of the test head by the rotary positioning disc (2) of the test head is arranged in the middle of one side of the control box (4); the upper end of the test head lifting rotating part (1) is connected with a test control head (10) through a connecting arm (11), and the lower end of the test head lifting rotating part is connected with a measuring rotor (9); the other side of the control box (4) is fixedly connected with a measuring cylinder rotary table middle shaft (7) of a measuring cylinder rotary table (8) through a measuring cylinder rotary table positioning ring (6); a plurality of measuring cylinder temperature control sleeves (16) with a measuring cylinder temperature control groove (15) are uniformly arranged on the measuring cylinder rotating disc (8); a rotor drying groove (12), a rotor rough cleaning groove (13) and a rotor fine cleaning groove (14) are arranged on one side of the cleaning and drying control part (3), and the three grooves are distributed on a rotating arc line of the test control head (10).

Description

Automatic continuous sample feeding viscosity testing device

technical field

The utility model relates to a viscosity testing device for automatic and continuous sample supply for crude oil pipeline transportation process simulation and automatic testing. Covers technical areas of testing and piping systems not covered by other classes.

Background technique

The viscometer is the key equipment in the laboratory test of crude oil, and it is mainly used to test the viscosity of crude oil in the evaluation test of the crude oil pipeline transportation process laboratory. At present, the viscometer is mainly used as a separate measuring device. A test cylinder is used to inject a specified volume of sample into the test cylinder manually, and then the measuring head is manually controlled to drop to the specified position. Start measuring. During the evaluation and testing process of the crude oil pipeline transportation process laboratory, the experimenter took samples from the crude oil simulation tank at the sampling time obtained by the experimental design, and injected them into the viscometer measuring cylinder, and then fixed the measuring cylinder in the temperature control tank of the viscometer for testing. Test, after the test is over, control the viscometer measuring head to rise, then remove the measuring head rotor and measuring cylinder, clean and prepare for the next use.

From the above process, it can be seen that the testing process of viscometers currently on the market has achieved automation and high precision, but the process of sampling and cleaning is manually operated before and after the test. The process of sampling is just very critical, because the process of manually sampling samples from the simulation tank into the measuring cylinder of the viscometer, and fixing the measuring cylinder into the temperature control tank of the viscometer, due to the difference between the oil sample to be tested and the room temperature, measurement Due to the existence of the temperature difference between the cylinders, the temperature of the oil sample to be tested may have already occurred, resulting in the actual measured viscosity value is not the viscosity value at the expected temperature, and because of the manual sample injection, the oil sample injected into the measuring cylinder The amount is only observed with the naked eye, and there is a certain error. In addition, considering that the rheology of crude oil is nonlinearly related to temperature, the above factors may lead to invalidation of the entire test result and seriously reduce the accuracy of the test.

Therefore, in order to fundamentally improve the accuracy of crude oil testing, it is necessary to automate the sample injection process before the automated viscometer test, eliminate human factors, and achieve accurate sample injection. The viscometers currently on the market are only developed for the testing process, and have not considered the need to link with the sample injection equipment before testing to realize the automation of the entire testing process. Therefore, in the mechanical structure of the viscometer, the distance between the highest position of the measuring head rising and the measuring cylinder is generally small. The measuring cylinder and the temperature control groove of the measuring cylinder are connected by threads, and the rotor of the measuring head and the connecting rod of the measuring head are connected by threads. , so that the function of linkage with the sample injection equipment cannot be realized, and it is even more impossible to satisfy the function of continuous automatic testing of multiple oil samples.

Utility model content

The purpose of the utility model is to design an automatic and continuous sample supply viscosity testing device which can cooperate with the sample injection device to realize automatic sample injection and carry out continuous automatic test of the viscosity of multiple oil samples in the process simulation and automatic test of crude oil pipeline transportation.

The structure of the utility model is shown in Figures 1-2; it includes a test head lifting and rotating part 1, a test head rotating positioning plate 2, a cleaning and drying control part 3, a control box 4, a bottom plate 5, a measuring cylinder turntable positioning ring 6, Measuring cylinder turntable axis 7, measuring cylinder turntable 8, measuring rotor 9, test control head 10, connecting arm 11, rotor drying tank 12, rotor rough cleaning tank 13, rotor fine cleaning tank 14, measuring cylinder temperature control tank 15, measurement Cylinder temperature control cover 16.

The cleaning and drying control part 3 is installed in the middle of one side of the control box 4, and the test head lifting and rotating part 1 is fixed on the cleaning and drying control part 3 by the test head rotation positioning plate 2, and the upper end of the test head lifting and rotating part 1 is connected to the test control head through the connecting arm 11 10. The lower end of the test control head 10 is connected to the measuring rotor 9, and the test control head 10 forms a "∏" shape with the lifting and rotating part 1 of the test head; on the other side of the control box 4, the center axis of the measuring cylinder turntable is fixed by the positioning ring 6 of the measuring cylinder turntable 7 and connect the measuring cylinder rotating disk 8 through the measuring cylinder rotating disk axis 7, and evenly install a plurality of measuring cylinder temperature control sleeves 16 on the measuring cylinder rotating disk 8, and each measuring cylinder temperature control sleeve 16 has a measuring cylinder temperature control tank 15; The measuring rotor 9 faces each rotatable measuring cylinder temperature control tank 15 from above; a rotor drying tank 12, a rotor rough cleaning tank 13, and a rotor fine cleaning tank 14 are installed on one side of the cleaning and drying control part 3, three The layout of the slots is on the arc of rotation of the test control head 10 .

Among them, the lifting and rotating part 1 is equipped with a lifting driving device and a rotating driving device; the lifting and rotating are both driven by a stepping motor screw, positioned through encoder pulse feedback, and supplemented by photoelectric and Hall sensors. Make sure that the lifting process of the detection head is enough to enter the specified arc range, and then it can accurately enter the test cylinder (15) into the temperature bath 15 for testing;

The first cleaning tank and the second cleaning tank in the cleaning and drying control part 3 adopt the method of semiconductor temperature control and ultrasonic cleaning. There is a cleaning liquid suitable for crude oil cleaning in the tank. The rotor of the test head can be effectively cleaned by heating and ultrasonic cleaning. Clean; cleaning cotton is installed in the drying constant temperature tank, and the friction drying is carried out by driving the rotor of the test head to rotate at high speed, and the temperature is adjusted at the same time.

During the continuous automatic viscosity test, the entire action process of the viscometer is controlled by the PLC placed in the electric control box. Thus, the viscometer of the utility model can cooperate with the sample injection device to perform automatic sample injection, automatic test, and automatic cleaning of the rotor of the test head, so that up to eight oil samples can be automatically and continuously tested. On the one hand, it eliminates the influence of human factors in the process between sample injection and test start, and improves the test accuracy. On the other hand, it realizes the automatic test of up to 8 test sequences, which reduces the human input in the middle process, and the injection equipment, etc. An automatic system for evaluation and testing of crude oil indoor pipeline transportation process is formed.

Apparently, although this viscometer is mainly designed for the requirements of the crude oil indoor pipeline transportation process evaluation test automation system, it is not limited to use in this system. This viscometer can be used in all rheological testing work, especially in large-scale, multi-sample continuous testing work, which can greatly reduce human errors, improve testing accuracy and reduce manpower consumption. And it can easily cooperate with other devices to form an automatic system for the testing process.

Description of drawings

Figure 1 The side view of the overall shape of the viscosity testing device for automatic continuous sample supply

Figure 2 The top view of the overall shape of the viscosity testing device for automatic continuous sample supply

in:

1-Test head lifting and rotating part 2-Test head rotation positioning plate

3-Cleaning and drying control unit 4-Control box

5-Bottom plate 6-Measuring cylinder turntable positioning ring

7-Measuring cylinder turntable axis 8-Measuring cylinder turntable

9-Measuring rotor 10-Test control head

11-Connecting arm 12-Rotor drying tank

13-Rotor coarse cleaning tank 14-Rotor fine cleaning tank

15-Temperature control tank for measuring cylinder 16-Temperature control sleeve for measuring cylinder

Detailed ways

Embodiment. The utility model will be described in detail below with an embodiment. This example is an experimental prototype, and its composition is shown in Figure 1 and Figure 2.

The cleaning and drying control part 3 is installed in the middle of one side of the control box 4, and the test head lifting and rotating part 1 is fixed on the cleaning and drying control part 3 by the test head rotation positioning plate 2, and the upper end of the test head lifting and rotating part 1 is connected to the test control head through the connecting arm 11 10. The lower end of the test control head 10 is connected to the measuring rotor 9, and the test control head 10 forms a "∏" shape with the lifting and rotating part 1 of the test head; on the other side of the control box 4, the center axis of the measuring cylinder turntable is fixed by the positioning ring 6 of the measuring cylinder turntable 7 and connect the measuring cylinder rotating disk 8 through the measuring cylinder rotating disk axis 7, and evenly install a plurality of measuring cylinder temperature control sleeves 16 on the measuring cylinder rotating disk 8, and each measuring cylinder temperature control sleeve 16 has a measuring cylinder temperature control tank 15; The measuring rotor 9 faces each rotatable measuring cylinder temperature control tank 15 from above; a rotor drying tank 12, a rotor rough cleaning tank 13, and a rotor fine cleaning tank 14 are installed on one side of the cleaning and drying control part 3, three The layout of the slots is on the arc of rotation of the test control head 10 .

This example is a viscometer designed and developed on the basis of the VT550 viscometer; among them, there are 8 measuring cylinder temperature control sleeves 16.

All shells in this example are made of stainless steel and metal spraying process. The test head is the test head of HAAKE VT550 viscometer. The temperature control range of the temperature control tank 15 of the test cylinder is 0-70 degrees, the temperature control accuracy is ±0.2 degrees C, and the temperature control method adopts the Peltier heating and cooling method. The 8 test tube constant temperature tanks on the turntable can automatically switch the test positions according to the test requirements, and the 1-8 positions can be used, or any one of the test holes can be used alone. The lifting and rotating motors all adopt stepping motors imported from Japan, and the imported high-precision sliders make them move and rotate evenly, with low noise during movement and high repeatability. The PLC uses Mitsubishi PLCFX-2N32MT programmable logic controller to monitor the temperature control system, turntable, detection head's rotation angle and lifting positioning throughout the whole process. The external signal output can communicate with the computer or the centralized data processor through the standard RS-232S interface to ensure the stability and smoothness of the data output.

Main dimensions:

The size of the viscometer assembly: length 700mm, width 1050mm; table height 360mm;

The size of the lifting and rotating part 1 of the test head is 100mm in length, 100mm in width and 450mm in height;

The size of the cleaning and drying control part 3 is 250mm in length, 400mm in width and 190mm in height;

The vertical height between the upper surface of the measuring cylinder turntable 8 and the bottom plate 5 is 360mm;

Base plate 6 is 700mm long and 1050mm wide;

Electric control box 5 size is long 700mm, wide 1050mm, high 170mm.

The prototype has been tested many times and runs stably. It maintains the test accuracy of the commercial viscometer VT550 and eliminates human errors in the sample injection process. Together with the automatic sample injection device and the sampling simulation tank, it constitutes an indoor evaluation of the crude oil pipeline transportation process. The test automation system realizes the overall function of the system. It greatly improves the test level and automation degree of crude oil pipeline transportation process evaluation, realizes the automation of continuous test process, and saves human resources. Not only has good independent use value, but also is more conducive to cooperating with equipment of different testing processes to realize the automation of the testing process, thereby fundamentally improving the testing level.

Claims (3)

1. Crude oil pipeline delivery technology process simulation and automatic test automatically continuously for the viscosity test device of sample, it is characterized in that it comprises measuring head lifting rotating part (1), measuring head positioning of rotating dish (2), cleaning-drying control part (3), control box (4), base plate (5), measure tube rotating disk centring ring (6), measure tube rotating disk axis (7), measure tube rotating disk (8), measure rotor (9), test control head (10), linking arm (11), rotor dry slot (12), the thick rinse bath of rotor (13), rotor seminal plasma washing trough (14), measure tube temperature control tank (15), measure tube temperature control cover (16); On one side cleaning-drying control part (3) is installed at control box (4), go up by measuring head positioning of rotating dish (2) fixing test head lifting rotating part (1) at cleaning-drying control part (3), measuring head lifting rotating part (1) upper end connects test control head (10) by linking arm (11), the lower end of test control head (10) connects measures rotor (9), and test control head (10) becomes " ∏ " shape with measuring head lifting rotating part (1); Another side at control box (4) also connects a measurement tube rotating disk (8) by measuring tube rotating disk axis (7) by measuring tube rotating disk centring ring (6) fixation measuring tube rotating disk axis (7), measuring even a plurality of measurements temperature control cover (16) of installing on the tube rotating disk (8), each is measured a measurement tube temperature control tank (15) in the tube temperature control cover (16); Measure rotor (9) and face rotatable each measurement tube temperature control tank (15) from the top; Side at cleaning-drying control part (3) is equipped with rotor dry slot (12), the thick rinse bath of rotor (13), rotor seminal plasma washing trough (14), and the layout of three grooves is on the rotation camber line of test control head (10).
2. 2. according to claim 1 automatically continuously for the viscosity test device of sample, it is characterized in that described lifting rotating part (1) inside is equipped with lifting drive and rotating driving device; Lifting and rotation drive by the stepper motor screw mandrel, locate by the encoder pulse feedback, and are aided with the positioning confirmation signal of photoelectricity and Hall element; After the detection head lifting process finishes, enter the radian scope of regulation, after can accurately enter into test barrel temperature control tank (15) and test.
3. 3. the viscosity test device that supplies sample automatically continuously according to claim 1, it is characterized in that the mode that one rinse bath in the cleaning-drying control part (3) and two road rinse baths all adopt semiconductor temperature, ultrasonic cleaning, the cleaning fluid of the crude oil washing/COW of being applicable to is arranged in the groove; In the dry calibration cell cleaning cotton is installed; Carry out the friction-type drying by the rotation of measuring head rotor high-speed, carry out the adjusting of temperature simultaneously.

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