CN210142047U - Device for accurately testing gel compression strength - Google Patents
Device for accurately testing gel compression strength Download PDFInfo
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- CN210142047U CN210142047U CN201920896101.XU CN201920896101U CN210142047U CN 210142047 U CN210142047 U CN 210142047U CN 201920896101 U CN201920896101 U CN 201920896101U CN 210142047 U CN210142047 U CN 210142047U
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Abstract
The utility model relates to an accurate test gel compressive strength device belongs to measuring device technical field. The device carries appearance system, system of exerting pressure, control system and data acquisition and information feedback system. The sample carrying system comprises a pressure bottle for containing gel, a liftable pressure bottle tray and a base; the pressure application system comprises a telescopic rod, a pressure sensor with a cylindrical probe and a protective cover, the probe moves up and down under the driving of the telescopic rod, and the protective cover is used for protecting the pressure sensor; the control system is used for controlling the telescopic rod and the pressure bottle tray to move up and down; the data acquisition and information feedback system is used for setting the pressure application rate and the stroke of the pressure sensor, calculating the compression strength of the gel according to the data acquired by the pressure sensor and drawing a dynamic curve graph of the force value-time. The device has the advantages of reasonable and compact structure, low price, convenient carrying, simple operation, high working efficiency and high accuracy.
Description
Technical Field
The utility model relates to a measuring device technical field specifically is an accurate test gel compressive strength device.
Background
The gel is a hydrophilic polymer with a moderate cross-linked network, has good processing and using performance, and is widely applied to the fields of food, medicine and health, agriculture and forestry, civil construction, petrochemical industry and the like. The gel strength is one of the key technical indexes for monitoring the quality of the gel product at present. For example, in the water plugging measure of an oil field, the strength of the gel plays a decisive role in the plugging capability of the stratum; in the treatment of water leakage of underground engineering structures, the gel strength is too low, the slurry is easy to wash away when meeting a stratum or a rock stratum with higher water flow pressure, and the stability of the slurry in cracks or the stratum is influenced when the gel strength is too high. Therefore, the measurement of the gel strength has practical guiding significance.
At present, the gel strength measurement method mainly comprises a rheometer method, a texture analyzer method, a visual code method and a ball drop method, wherein the rheometer method and the texture analyzer method have large equipment and high price and are difficult to use anytime and anywhere, and are particularly carried and used in a construction site. The visual code method is to determine the strength of the gel according to different states of the gel when the test tube is vertically placed; the ball falling rule is that steel balls or weights with different specifications are selected for the gel generated in the test tube, the steel balls or weights naturally fall from the designated position, and the gel strength is determined by observing the position of the steel balls or weights in the gel for the retention time. Both the visual code method and the ball falling method are qualitative tests, the test process has great subjectivity, and the test result lacks precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims to develop an accurate test gel compressive strength device to improve or overcome the problem that above-mentioned existing equipment exists. The device is convenient for rapidly, intuitively and flexibly reflecting the dynamic change of the compression strength of the gel. The device has simple operation process, high measurement accuracy and real-time monitoring. In order to achieve the above purpose, the technical solution of the present invention is as follows: the device for accurately testing the gel compression strength is characterized by comprising a sample loading system, a pressure applying system, a control system and a data acquisition and information feedback system.
The sample carrying system comprises a pressure bottle for containing gel, a liftable pressure bottle tray and a base, wherein the pressure bottle is designed into a cylindrical bottle (the upper end of the cylindrical bottle is opened) according to the weight of the gel, and the gel testing weight range is 5g-1000 g. The minimum diameter of the pressure bottle should be greater than 20 mm. The size of the sample carrying tray ensures the area where the maximum pressure bottle can be placed, and the lifting distance of the tray is adjusted by a lifting rod fixed on the base.
The pressure applying system comprises a telescopic rod, a pressure sensor with a cylindrical probe and a protective cover. The probe is a cylinder with the diameter of 13mm, the stroke of the probe is 80mm, the test stroke is 1-60mm, the stroke error is +/-0.1 mm, and the running speed of the probe is 0.1mm/s,0.2mm/s,0.5mm/s,1.0mm/s,1.5mm/s and 2.0 mm/s. And a glass protective cover is arranged outside the probe.
The control system is used for controlling the telescopic rod and the pressure bottle tray to move up and down; the data acquisition and information feedback system is used for setting the pressure application rate and the stroke of the pressure sensor, calculating the force application value according to the data acquired by the pressure sensor and drawing a dynamic curve chart of the force application value.
The device is also provided with an adjusting button for manually adjusting the set parameters.
The whole process enables the test result to be more flexible and accurate and the operability to be stronger.
The method for testing the gel compression strength by adopting the device for accurately testing the gel compression strength comprises the following specific testing steps:
step A: the gel is generated in the pressure bottle or the dry gel is balanced in the swelling state by the water absorption expansion value in the pressure bottle.
And B: setting the running speed and the stroke of the probe, and zeroing the force value.
And C: and (3) placing the pressure bottle filled with the gel sample to be tested on a pressure bottle tray, adjusting the height of the tray to enable the sample to be about 1cm away from the probe, pressing a start key, and enabling the probe to move downwards at a preset running speed to start testing.
Step D: when the probe contacts the gel sample and continues to move downwards, the pressure sensor automatically transmits a force value to the data acquisition and information feedback system, and a force value-time curve graph begins to be drawn. And the probe continuously moves downwards to a preset pressing depth, the test is stopped, the test result is automatically latched, and then the probe automatically returns to the initial position, and the pressure value is read at the moment.
Test results were processed, and the calculation formula of the gel compression strength was as follows:
in the formula:
p-compressive strength of the gel, Pa;
f is the pressure applied by the probe, N;
d is the probe diameter, m;
h-distance of probe pressed into gel, m.
Based on this calculation, the compressive strength of the gel is then read directly.
Step E: and taking 5 test values for each gel sample to be tested, discarding the discrete large value, and taking the average value of the 4 values as the gel compression strength value.
Step F: after each test, the probe (especially the end face) and the pressure bottle tray must be lightly wiped by a soft wet cloth to prevent the accuracy of the instrument from being influenced.
Advantageous effects
Compared with the prior art, the utility model discloses accurate test gel compressive strength device's beneficial effect lies in, quick, directly perceived, react the compressive strength dynamic change of gel in a flexible way, and the device operation process is simple and convenient, and measurement accuracy is high, and can real time monitoring. In addition, the device has the advantages of reasonable and compact structure, low price, convenience in carrying, simplicity in operation, high working efficiency and high accuracy.
In order to make the above objects, features and advantages of the present invention comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a front view of an apparatus for accurately testing the compressive strength of a gel.
Fig. 2 is a left side view of the apparatus for accurately testing the compressive strength of gel.
Detailed Description
In order to make the above-mentioned device for accurately testing the compressive strength of gel more comprehensible, the present invention is further described in detail with reference to the accompanying drawings and specific examples, but is not limited to the following examples.
Example 1
As shown in fig. 1, the utility model comprises: 1-display dial, 2-pressure bottle tray lifting adjusting button, 3-probe moving speed adjusting button, 4-probe, 5-probe protective cover, 6-pressure bottle, 7-pressure bottle tray, 8-lifting rod and 9-base.
The specific implementation steps of the test comprise the following steps:
step a: the acrylate grouting material A, B slurry was mixed with a pressure bottle to form a gel.
Step b: setting the running speed of the probe to be 1mm/s and the stroke to be 30mm, and adjusting the force value to be zero.
Step c: and (3) placing the pressure bottle filled with the gel sample to be tested on a pressure bottle tray, adjusting the height of the tray to enable the sample to be about 1cm away from the probe, pressing a start key, and enabling the probe to move downwards at a preset running speed to start testing.
Step d: and when the probe contacts the gel sample, the probe continues to move downwards, and the pressure sensor automatically transmits data to the data acquisition and information feedback system to draw a force value-time curve graph. The probe continued to move down to a plunge depth of 30mm, stopping the test, at which point the test results were automatically latched, and then the probe automatically returned to the initial position at which the read pressure value was 0.692 kN.
Test results were processed, and the calculation formula of the gel compression strength was as follows:
in the formula:
p-compressive strength of the gel, Pa;
f is the pressure applied by the probe, N;
d is the probe diameter, m;
h-distance of probe pressed into gel, m.
Based on this calculation, the compressive strength of the gel was then read directly 565 KPa.
Step E: taking 5 test values for each gel sample to be tested, discarding discrete large values, and taking the average value of 4 values as the gel compression strength value 564.3 KPa.
Step F: after the test is finished, the probe (particularly the end face) and the pressure bottle tray are lightly wiped by using soft wet cloth, so that the accuracy of the instrument is prevented from being influenced.
Claims (5)
1. A device for accurately testing the compression strength of gel is characterized by comprising a sample loading system, a pressure applying system, a control system and a data acquisition and information feedback system; the sample carrying system comprises a pressure bottle (6) for containing gel, a pressure bottle tray (7) capable of lifting and descending and a base (9); the pressure application system comprises a telescopic rod, a pressure sensor with a cylindrical probe and a protective cover (5), the probe (4) moves up and down under the driving of the telescopic rod, and the protective cover (5) is fixed around the probe (4) and used for protecting the probe; the control system is used for controlling the telescopic rod and the pressure bottle tray (7) to move up and down; the data acquisition and information feedback system is used for setting the pressure application rate and the stroke of the probe (4), calculating the force application value according to the data acquired by the pressure sensor and drawing a dynamic curve chart of the force application value.
2. The device for accurately testing the compressive strength of the gel is characterized in that the pressure bottle (6) is a cylindrical bottle with an opening at the upper end, the minimum diameter is more than 20mm, and the gel testing weight is in a range of 5g-1000 g; the size of the pressure bottle tray (7) ensures the area of the maximum pressure bottle (6) which can be placed, and the lifting distance of the pressure bottle tray (7) is adjusted by a lifting rod (8) fixed on the base.
3. An apparatus for accurately measuring the compressive strength of a gel as set forth in claim 1, wherein the diameter of the cylindrical probe (4) is 13mm, the stroke of the probe is 80mm, the stroke can be measured at 1 to 60mm, the stroke error is ± 0.1mm, the probe is operated at a speed of 0.1mm/s,0.2mm/s,0.5mm/s,1.0mm/s,1.5mm/s,2.0 mm/s.
4. The device for accurately testing the compressive strength of gel according to claim 1, wherein a display panel is further provided for manually operating the movement rate of the probe (4), the lifting of the pressure bottle tray (7) and displaying the test result.
5. The apparatus for accurately testing the compressive strength of a gel according to claim 1, wherein an adjustment button is further provided for manually adjusting the setting parameters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896101.XU CN210142047U (en) | 2019-06-14 | 2019-06-14 | Device for accurately testing gel compression strength |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920896101.XU CN210142047U (en) | 2019-06-14 | 2019-06-14 | Device for accurately testing gel compression strength |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485157A (en) * | 2020-12-15 | 2021-03-12 | 中国科学院空间应用工程与技术中心 | Soft material fluidity detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485157A (en) * | 2020-12-15 | 2021-03-12 | 中国科学院空间应用工程与技术中心 | Soft material fluidity detection device |
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