Device for automatically measuring cloud point of nonionic surfactant

Abstract

The utility model provides a device for automatically measuring the cloud point of a nonionic surfactant. The device comprises a detection table, a lifting table, a heating unit, a detection unit and a display unit, the heating unit comprises a heating tank, a backflow pipeline, a backflow pump and a heating element, the heating tank is arranged on the detection table, the backflow pump is arranged in the backflow pipeline, and the backflow pipeline is arranged on the outer side of the heating tank and used for enabling hot bath substances in the heating tank to flow back; a heating element is arranged on the outer side of the backflow pipeline; the detection unit comprises a sample tube and a detection assembly, the sample tube is mounted in the heating tank, the detection assembly comprises a temperature sensor and a laser fiber detection sensor, and the detection assembly is arranged on the lifting platform and can extend into the sample tube; the display unit is arranged on the detection table, is in communication connection with the detection assembly, and is used for displaying the temperature value measured by the temperature sensor and the light transmission value measured by the laser fiber detection sensor. The device disclosed by the utility model can be used for automatically measuring the cloud point of the nonionic surfactant and is high in accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of petroleum testing technology, specifically relating to a device for automatically measuring the cloud point of nonionic surfactants. Background Technology

[0002] The cloud point is a characteristic parameter of polyether-type nonionic surfactants. Aqueous solutions of polyether-type nonionic surfactants become cloudy as temperature increases. This is because these surfactants dissolve in water through hydrogen bonds formed by the oxygen atoms in their ether bonds and hydrogen atoms in the water. These hydrogen bonds are relatively weak and gradually break as temperature rises, causing the surfactant's solubility in water to gradually decrease. At a certain temperature, it becomes insoluble and precipitates as a cloudy solution; this transition temperature is the cloud point.

[0003] The cloud point is affected by the molecular structure of surfactants and coexisting substances, and is related to the purity of the product. Therefore, the accuracy of cloud point measurement results is crucial when producing and accepting nonionic surfactants. Currently, cloud point determination devices for nonionic surfactants require human visual identification of the temperature at which the solution becomes turbid, which is not very accurate, cumbersome, inefficient, and yields unsatisfactory results. Utility Model Content

[0004] In view of this, the purpose of this utility model is to address the above-mentioned problems existing in the prior art by providing an automatic device for measuring the cloud point of nonionic surfactants. The device of this utility model can automatically measure the cloud point of nonionic surfactants with high accuracy.

[0005] The objective of this utility model is achieved through the following technical solution.

[0006] This utility model provides an automatic device for measuring the cloud point of nonionic surfactants, wherein the device includes: a detection stage, a lifting stage, a heating unit, a detection unit, and a display unit; wherein,

[0007] The lifting platform is located on one side of the testing platform;

[0008] The heating unit includes a heating tank, a return pipe, a return pump, and a heating element. The heating tank is installed on the testing platform. The return pump is installed inside the return pipe, and the return pipe is installed outside the heating tank to allow the hot bath material in the heating tank to return. A heating element is installed outside the return pipe to heat the hot bath material in the return pipe.

[0009] The detection unit includes a sample tube and a detection component. The sample tube is installed in the heating tank. The detection component includes a temperature sensor and a laser fiber optic detection sensor. The detection component is set on the lifting platform and can extend into the sample tube by means of the lifting platform.

[0010] The display unit is mounted on the detection platform and is communicatively connected to the detection component, and is used to display the temperature value measured by the temperature sensor and the light transmittance value measured by the laser fiber optic detection sensor.

[0011] Preferably, the return pipe is a tee pipe, with one end connected to the bottom of the heating tank and the other two ends connected to the upper middle part of the heating tank.

[0012] More preferably, a portion of the return pipe located below the heating tank is configured as a metal pipe, and the heating element is an electromagnetic coil wound around the metal pipe.

[0013] Preferably, the heating tank is a water bath.

[0014] Preferably, the device further includes a gas generator and a gas outlet pipe. The gas generator is disposed on the lifting platform, and the gas outlet pipe is disposed below the gas generator and can extend to the bottom of the sample tube by means of the lifting platform.

[0015] More preferably, the gas generating device is provided with a gas flow regulator for adjusting the gas generation rate.

[0016] Preferably, the device further includes a control unit, which includes a heating control switch, a lifting control switch, a detection control switch, and a reflux control switch, wherein the heating control switch is electrically connected to the heating element, the lifting control switch is electrically connected to the lifting platform, the detection control switch is electrically connected to the detection component, and the reflux control switch is electrically connected to the reflux pump.

[0017] More preferably, the lifting platform includes a transmission screw and a drive motor, and the lifting control switch is electrically connected to the drive motor.

[0018] Preferably, the sample tube is a glass tube; or, the detection assembly includes at least two optical fiber detection sensors.

[0019] Preferably, the display unit includes a digital display screen, which is communicatively connected to the temperature sensor and the laser fiber optic detection sensor.

[0020] The present invention has the following advantages: the device of the present invention can automatically measure the cloud point of nonionic surfactants, has good heating and stirring effects, ensures complete solution reaction, and the determination of cloud point is automatic, efficient and accurate. At the same time, the device is safe and reliable to use and has high practicality. Attached Figure Description

[0021] Figure 1This is a schematic diagram of one embodiment of the device of this utility model;

[0022] The components include: 1. Detection platform; 2. Sample tube; 3. Display unit; 4. Control unit; 5. Gas generator; 6. Gas flow regulator; 7. Lifting platform; 8. Detection assembly; 9. Gas outlet pipe; 10. Heating tank; 11. Reflux pump; 12. Heating element; and 13. Reflux pipe. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments, but this does not constitute any limitation on the present invention.

[0024] This utility model provides an automatic device for measuring the cloud point of nonionic surfactants, wherein the device includes: a detection stage, a lifting stage, a heating unit, a detection unit, and a display unit; wherein,

[0025] The lifting platform is located on one side of the testing platform;

[0026] The heating unit includes a heating tank, a return pipe, a return pump, and a heating element. The heating tank is installed on the testing platform. The return pump is installed inside the return pipe, and the return pipe is installed outside the heating tank to allow the hot bath material in the heating tank to return. A heating element is installed outside the return pipe to heat the hot bath material in the return pipe.

[0027] The detection unit includes a sample tube and a detection component. The sample tube is installed in the heating tank. The detection component includes a temperature sensor and a laser fiber optic detection sensor. The detection component is set on the lifting platform and can extend into the sample tube by means of the lifting platform.

[0028] The display unit is mounted on the detection platform and is communicatively connected to the detection component, and is used to display the temperature value measured by the temperature sensor and the light transmittance value measured by the laser fiber optic detection sensor.

[0029] Figure 1 An embodiment of the device of this utility model is shown.

[0030] like Figure 1 As shown, the device of this utility model includes a testing platform 1, a lifting platform 7, a heating unit, a testing unit, and a display unit 3.

[0031] The lifting platform 7 is located on one side of the testing platform 1, for example, on the rear side of the testing platform 1.

[0032] The heating unit includes a heating tank 10, a return pipe 13, a return pump 11, and a heating element 12. The heating tank 10 is mounted on the testing platform 1, for example, in the middle of the testing platform 1. The return pump 11 is mounted inside the return pipe 13, which is located outside the heating tank 10, for recirculating the hot bath material within the heating tank 10. The heating element 12 is mounted on the outside of the return pipe 13 for heating the hot bath material within the return pipe 13. Heating the hot bath material in the return pipe ensures a uniform and stable temperature at all points within the heating tank 10. Simultaneously, the return pump 11 mounted on the return pipe 13 allows for flow control of the hot bath material (e.g., water) within the heating tank 10, making the heating process more stable and controllable for the entire device.

[0033] The detection unit includes a sample tube 2 and a detection component 8. The sample tube 2 is installed in the heating bath 10, and the detection component 8 includes a temperature sensor and a laser fiber optic detection sensor. The detection component 8 is mounted on a lifting platform 7 and can be inserted into the sample tube 2 by means of the lifting platform 7.

[0034] The display unit 3 is mounted on the detection stage 1 and is connected in communication with the detection component 8. It is used to display the temperature value measured by the temperature sensor and the light transmittance value measured by the laser fiber optic detection sensor.

[0035] In some embodiments, such as Figure 1 As shown, the return pipe 13 is a T-shaped pipe. One end of the T-shaped pipe is connected to the bottom of the heating tank 10, and the other two ends are connected to, in particular, the upper middle part of the heating tank 10 from the left and right sides.

[0036] Two reflux pumps 11 can be installed, and the two reflux pumps 11 are respectively installed on the three-way pipe connected to the upper middle part of the heating tank 10.

[0037] In some embodiments, the portion of the return pipe 13 located below the heating tank 10 can be a metal pipe, and the heating element 12 is an electromagnetic coil wound around the metal pipe.

[0038] In some embodiments, the heating tank 10 can be an oil bath or a water bath, preferably a water bath. Therefore, the reflux pump 11 can be a miniature water pump.

[0039] In some embodiments, the apparatus of this invention further includes a gas generating device 5 and a gas outlet pipe 9. The gas generating device 5 is disposed on a lifting platform 7, and the gas outlet pipe 9 is disposed below the gas generating device 5 and can extend to the bottom of the sample tube 2 via the lifting platform 7. By providing the gas generating device 5 and the gas outlet pipe 9, gas can be blown into the bottom of the sample tube 2 to mix the solution in the sample tube 2 evenly, further ensuring thorough mixing of the sample.

[0040] The detection component 8 can be positioned below the gas generator 5 and adjacent to the gas outlet pipe 9. This facilitates the insertion of the detection component 8 into the sample tube 2 for detection.

[0041] In some embodiments, the number of optical fiber detection sensors can be at least two. This allows for more timely detection of sample transparency.

[0042] In some embodiments, the gas generating device 5 is provided with a gas flow regulator 6 for adjusting the gas generation rate.

[0043] In some embodiments, the device of this invention further includes a control unit 4. The control unit 4 includes a heating control switch, a lifting control switch, a detection control switch, and a reflux control switch. The heating control switch is electrically connected to the heating element 12, the lifting control switch is electrically connected to the lifting platform 7, the detection control switch is electrically connected to the detection component 8, and the reflux control switch is electrically connected to the reflux pump 11.

[0044] In some embodiments, the lifting platform 7 includes a transmission screw and a drive motor, and a lifting control switch is electrically connected to the drive motor. Under the action of the transmission screw, the gas generator 5, the gas outlet pipe 9, and the detection component 8 are driven to move up and down.

[0045] In some embodiments, sample tube 2 is a glass tube.

[0046] In some embodiments, the display unit 3 includes a digital display screen, which is communicatively connected to a temperature sensor and a laser fiber optic detection sensor.

[0047] In use, a certain amount of the sample to be tested is weighed, dissolved and diluted to the specified concentration with water or a solvent such as 25% diethylene glycol butyl ether solution, and the diluted solution is poured into sample tube 2. Sample tube 2 containing the sample is then fixed in heating bath 10. The heating element 12 on the reflux pipe 13 is controlled by a heating control switch to heat the hot bath material in the reflux pipe 13. The reflux pump 11 in the reflux pipe 13 is controlled by a reflux control switch to achieve the flow and displacement of the hot bath material between the reflux pipe 13 and heating bath 10, thereby heating the sample in sample tube 2. Simultaneously, the heating rate can be adjusted by the heating control switch to control the temperature within heating bath 10.

[0048] The lifting platform 7 is activated by the lifting control switch. The lifting platform 7 then moves the gas generator 5, detection component 8, and gas outlet pipe 9 downwards synchronously until the gas outlet pipe 9 extends to the bottom of the sample tube 2. The temperature sensor in the detection component 8 extends to the middle of the sample, while the laser fiber optic detection sensor is positioned above the sample liquid surface. Under the regulation and control of the gas flow regulator 6, the gas generator 5, mounted on the lifting platform 7, generates gas at the required rate, achieving uniform stirring of the sample in the sample tube 2. The temperature sensor and laser fiber optic detection sensor in the detection component 8 monitor the sample temperature and transparency in real time and transmit the data to the display unit 3 for real-time display.

[0049] The transmittance of the sample is determined based on the received laser data. As the temperature inside the heating bath 10 gradually increases during the test, when the sample reaches a certain temperature and becomes turbid, the laser fiber optic detection sensor detects a significant change in the transmittance value, indicating the appearance of a turbidity point. The temperature at this point is then read in the display unit 3.

[0050] In summary, the device of this invention has good heating and stirring effects, complete solution reaction, automatic, efficient and accurate determination of turbidity point, and is safe and reliable to use, making it highly practical.

[0051] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. Apparatus for automatically measuring the cloud point of a non-ionic surfactant, characterised in that, The device comprises a detection table (1), a lifting table (7), a heating unit, a detection unit and a display unit (3); wherein, The lifting table (7) is arranged on one side of the detection table (1); The heating unit comprises a heating tank (10), a backflow pipeline (13), a backflow pump (11) and a heating element (12), the heating tank (10) is arranged on the detection table (1); the backflow pump (11) is arranged in the backflow pipeline (13), the backflow pipeline (13) is arranged outside the heating tank (10), and the backflow pipeline (13) is used for backflow of hot bath substances in the heating tank (10); the outside of the backflow pipeline (13) is provided with the heating element (12) for heating the hot bath substances in the backflow pipeline (13); The detection unit comprises a sample tube (2) and a detection assembly (8), the sample tube (2) is installed in the heating tank (10), and the detection assembly (8) comprises a temperature sensor and a laser fiber detection sensor; the detection assembly (8) is arranged on the lifting table (7) and can be inserted into the sample tube (2) by means of the lifting table (7); The display unit (3) is arranged on the detection table (1) and is in communication connection with the detection assembly (8), and is used for displaying the temperature value measured by the temperature sensor and the light transmission value measured by the laser fiber detection sensor.

2. The apparatus of claim 1, wherein, The backflow pipeline (13) is a three-way pipeline, one end of the three-way pipeline is connected to the bottom of the heating tank (10), and the other two ends are respectively connected to the middle and upper parts of the heating tank (10).

3. The apparatus of claim 2, wherein, The part of the backflow pipeline below the heating tank (10) is arranged as a metal pipeline, the heating element (12) is an electromagnetic coil, and the electromagnetic coil is wound on the metal pipeline.

4. The apparatus of claim 1, wherein, The heating tank (10) is a water bath pot.

5. The apparatus of any one of claims 1-4, wherein, The device further comprises a gas generating device (5) and an air outlet pipeline (9), the gas generating device (5) is arranged on the lifting table (7), and the air outlet pipeline (9) is arranged below the gas generating device (5) and can be inserted into the bottom of the sample tube (2) by means of the lifting table (7).

6. The apparatus of claim 5, wherein, A gas flow regulator (6) for adjusting the gas generation rate is arranged on the gas generating device (5).

7. The apparatus of any one of claims 1-4, wherein, The device further comprises a control unit (4), the control unit (4) comprises a heating control switch, a lifting control switch, a detection control switch and a backflow control switch, wherein the heating control switch is in electrical connection with the heating element (12), the lifting control switch is in electrical connection with the lifting table (7), the detection control switch is in electrical connection with the detection assembly (8), and the backflow control switch is in electrical connection with the backflow pump (11).

8. The apparatus of claim 7, wherein, The lifting table (7) comprises a transmission lead screw and a driving motor, and the lifting control switch is in electrical connection with the driving motor.

9. The apparatus of any one of claims 1-4, wherein, The sample tube (2) is a glass tube; or the detection assembly (8) comprises at least two laser fiber detection sensors.

10. The apparatus of any one of claims 1-4, wherein, The display unit (3) comprises a digital display screen, and the digital display screen is in communication connection with the temperature sensor and the laser fiber detection sensor.

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