High-temperature and high-pressure compatibility testing device for solid material and liquid material
By designing the compatibility testing device for tank body, hollow structure, pressurized heating and monitoring control devices, the problem of solid-liquid material compatibility testing at high temperatures is solved, and comprehensive compatibility testing is achieved in high-temperature and high-pressure environments is ensured to ensure the accuracy and versatility of the test.
Patent Information
- Application Number
- CN202422152051.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The prior art lacks a test device for solid-liquid material compatibility reaction at high temperatures, and cannot simulate the compatibility of non-metallic materials and liquids under complex working conditions, resulting in the inability to evaluate their performance changes in high temperature and high pressure environments.
A compatibility testing device including a tank body, a hollow structure, a pressurization device, a heating device and a monitoring and control device is designed. The hollow structure ensures that the solid material and the liquid material are in full contact, and combines agitation, pressurization and heating to simulate a high-temperature and high-pressure environment, and uses the monitoring and control device to perform automated testing.
A comprehensive compatibility test of solid materials and liquid materials under high temperature and high pressure can be achieved, and its performance changes can be estimated in harsh environments. The test accuracy is high, simple operation is low cost, and it is suitable for solid materials of various structures.
Smart Images
Figure CN223180171U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a compatibility testing device, in particular to a high-temperature and high-pressure compatibility testing device for solid materials and liquid materials. Background Art
[0002] The compatibility between two or more materials will affect the safe and stable operation of the device. For solid and liquid materials, the liquid material is prone to vaporization in a high-temperature environment. After vaporization, the liquid material volatilizes into the air, making it difficult to achieve the compatibility reaction between the solid and liquid materials. Therefore, currently, the compatibility reaction of solid-liquid materials is usually carried out at room temperature, and there is a lack of a testing device for the compatibility reaction of solid-liquid materials at high temperatures.
[0003] For example, in the manufacturing process of automobile engines, metal materials are mainly used, but non-metallic materials such as EPDM rubber, silicone rubber, PA66, etc. are also used. To evaluate the impact of coolant or lubricating oil on non-metallic materials and ensure that the non-metallic material components of the cooling system and lubricating system will not deteriorate due to coolant or lubricating oil, especially for non-metallic materials in direct contact with coolant or lubricating oil, attention should be paid to the compatibility between non-metallic materials and the liquids they contact. Currently, the compatibility test of non-metallic materials and liquids in the industry is carried out in accordance with standards GB / T 1690 and GB / T 11547, generally a simple immersion test at a certain temperature, that is, putting non-metallic materials of different sizes directly into glass jars of different volumes for immersion testing. It is impossible to ensure the uniformity of temperature and the comprehensiveness of the test, so it is impossible to fully measure the compatibility of non-metallic materials. This immersion test also cannot simulate the compatibility test of non-metallic materials under complex or harsh working conditions of automobile coolant or lubricating oil. If there is an incompatibility phenomenon between coolant and non-metallic materials under high temperature and high pressure, some flocculates may precipitate, resulting in the turbidity of coolant or lubricating oil. In the lightest case, it may block the pipeline and affect lubrication or heat dissipation. In extreme cases, corrosion and leakage may occur. Therefore, it is of great significance to design a compatibility testing device for liquid materials such as coolant or lubricating oil and solid materials such as non-metallic materials under high temperature and high pressure. Summary of the Utility Model
[0004] Purpose of the Utility Model: The utility model aims to provide a high-temperature and high-pressure compatibility testing device for solid materials and liquid materials.
[0005] Technical solution: The utility model provides a device including a tank body for accommodating liquid materials, a hollow structure arranged inside the tank body for placing solid materials and facilitating the flow of liquid materials, a pressurizing device, a heating device, and a monitoring and control device. A tank cover hermetically connected to the tank body is provided at the top of the tank body, and the pressurizing device is arranged on the tank cover; the heating device is used to heat the tank body; the monitoring and control device is electrically connected to the pressurizing device and the heating device and is used to control and monitor the pressure and temperature inside the tank body.
[0006] Further, the hollow structure is a mesh-type, semi-mesh-type or isolated hollow structure, which can completely separate solid materials to avoid stacking and cross-contact.
[0007] Further, a stirring device is also provided on the tank cover. The stirring device is used to stir the solid materials and liquid materials in the hollow structure; the stirring device includes a stirring motor and a stirrer, and the stirring motor is provided with a water inlet and a water outlet for heat dissipation.
[0008] Further, the pressurizing device includes an air inlet assembly, a deflation assembly, and a safety valve.
[0009] Further, the monitoring and control device includes a temperature sensor, a pressure sensor, and a controller. The temperature sensor and the pressure sensor are arranged on the tank cover and are electrically connected to the controller.
[0010] Further, the monitoring and control device is electrically connected to the stirring device.
[0011] Further, the heating device is arranged outside the tank body.
[0012] Further, the tank cover and the tank body are fixedly connected by a buckle or a threaded structure.
[0013] Further, the tank body is made of high-pressure resistant material, such as stainless steel.
[0014] Further, the material of the hollow structure is 316 stainless steel or polytetrafluoroethylene to avoid quality loss caused by friction. If polytetrafluoroethylene is used, the test temperature does not exceed the temperature resistance point of polytetrafluoroethylene.
[0015] Further, the liquid materials include coolant and lubricating oil.
[0016] Further, the solid materials include non-metallic materials; the non-metallic materials are PA12, PP, PE, ABS, PA66 or PTFE.
[0017] Principle of the invention: In the present utility model, the solid material is fixed within a certain area through a hollow structure, which facilitates testing, observation, and later recovery. Meanwhile, the hollow structure allows the liquid material to flow in and out freely, ensuring sufficient contact between the solid material and the liquid material. Combined with a stirring device, a pressurizing device, and a heating device, various high-temperature and high-pressure environments are simulated to conduct a comprehensive compatibility test. Then, the monitoring and control device is used to monitor and record the test process, enabling the automation of the test.
[0018] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: (1) It can simulate various high-temperature and high-pressure environments to test the compatibility between solid materials and liquid materials, and can estimate the application performance of solid materials and liquid materials under various harsh conditions such as accelerated oxidation and acidification; (2) The use of a stirring device to keep the liquid material in a flowing state during contact with the solid material for testing can better ensure the accuracy of the test; (3) By replacing the hollow structure, the test can be made multifunctional, capable of dealing with the testing of solid materials with various different structures, with low cost, simple structure, and easy to operate; (4) The visualization of temperature, pressure, stirring rate, and test time can be achieved. Description of the drawings
[0019] Figure 1 It is a schematic structural diagram of a high-temperature and high-pressure compatibility test device for solid materials and liquid materials;
[0020] Figure 2 It is a schematic diagram of a mesh-type hollow structure;
[0021] Figure 3 It is a schematic diagram of a semi-mesh-type hollow structure;
[0022] Figure 4 It is a side expansion view of the inner and outer cylinders in a mesh-type hollow structure or a semi-mesh-type hollow structure;
[0023] Figure 5 It is a schematic diagram of an isolated-type hollow structure;
[0024] Figure 6 It is a simulation diagram of the hollow structure. Detailed implementation manners
[0025] Next, the present utility model will be further described in combination with specific embodiments and the drawings.
[0026] Embodiment 1: For the high-temperature and high-pressure compatibility test device for solid materials and liquid materials provided by the present utility model, the liquid materials include coolant and lubricating oil, and the solid materials include non-metallic materials such as PA12, PP, PE, ABS, PA66, or PTFE.
[0027] Such as Figure 1As shown in the figure, the above-mentioned compatibility testing device includes a tank body 1 for containing liquid materials, a hollow structure 2 provided inside the tank body 1 for placing solid materials, a pressurizing device, a heating device, and a monitoring and control device.
[0028] The top of the tank body 1 is provided with a tank cover 3 that is hermetically connected to the tank body 1. The tank cover 3 and the tank body 1 are fixedly connected by a snap or threaded structure. The tank body 1 is made of a high-pressure resistant material, such as 316L stainless steel.
[0029] The pressurizing device is provided on the tank cover 3 and includes an air inlet assembly 5, a deflation assembly 6, and a safety valve 7; the heating device is used to heat the tank body and is provided outside the tank body 1; a stirring device 4 is provided on the tank cover 1, and the stirring device 4 is used to stir the liquid materials in the tank body 1 and the solid materials in the hollow structure 2; the stirring device includes a stirring motor and a stirrer, and the stirring motor is provided with a water inlet and a water outlet for heat dissipation.
[0030] The monitoring and control device is electrically connected to the pressurizing device and the heating device and is used to control and monitor the pressure and temperature in the tank body. It includes a temperature sensor 8, a pressure sensor 9, and a controller 10. The temperature sensor 8 and the pressure sensor 9 are provided on the tank cover 3 and are electrically connected to the controller 10.
[0031] As Figures 2 - 4 shown, the hollow structure is a mesh or semi-mesh hollow structure. The mesh hollow structure is mainly composed of multiple struts to form a concentric ring cylinder for testing the wrapping property of experimental materials. The semi-mesh hollow structure is mainly formed by splicing simple struts to form a concentric ring cylinder for simple fixation testing. The difference between the two lies in the different densities of the strut materials forming the hollow structure.
[0032] As Figure 5 shown, the four corners 1 - A - A - 1 of the rectangular shape of the isolated hollow structure are equivalent to a clamping plate. The clamping plate, the outer cylinder, and the inner cylinder can form a closed independent space. The upper part of the independent space is not in contact with the liquid and only communicates with the air. The solution inside the entire tank body is a heating medium used to keep the temperature in each independent space the same.
[0033] The isolated hollow structure is equivalent to multiple fan-shaped storage spaces that together form a concentric ring cylinder. The numbers 1, 2, 3, 4, 5, 6, 7, 8 form the external nodes, and the letters A, B, C, D, E, F, G, H form the internal nodes. The numbers and letters on the same diameter form a partition board. The function of the isolated hollow structure is that different materials can be placed in each independent space, and different materials have different compatibilities with the same liquid. It is mainly used to observe and recover the liquid in the isolation space for subsequent solution performance analysis.
[0034] Figure 6It is a simulation diagram of a hollow structure. The hollow structure of the simulation diagram is composed of two cylinders with different diameters but the same height. The distance from the inner cylinder to the outer cylinder is equal and they are welded together by struts to form a concentric ring cylinder. The concentric ring is equally divided into 8 equal parts, and test materials are placed in each part. A total of 8 test materials can be placed for testing simultaneously.
[0035] The working principle of the above high-temperature and high-pressure compatibility device is as follows:
[0036] First, fix the non-metallic material in the hollow structure 2. The quantity of the material is determined according to the test requirements. Add a certain amount of coolant or lubricating oil to the tank body 1. The volume of the tank body can be customized as 1L, 2L or 3L. Since this device is for high-temperature and high-pressure, the tank body 1 is made of high-pressure-resistant stainless steel to prevent deformation. Then place the hollow structure 2 into it, and the liquid needs to submerge the hollow structure 2 by a certain distance. Put on the tank cover 3. A sealing ring is used between the tank cover 3 and the tank body 1. The tank cover 3 and the tank body 1 are fastened with 316L stainless steel quick-release clamps (or they can also be fixed and sealed with screws and nuts by drilling threaded holes on the tank body 1 and the tank cover 3). First, close the pressure relief component 6. At the air inlet valve interface of the air inlet component 5, fill a certain pressure of air or oxygen (selected according to the test requirements) into the air inlet through the air source. After closing the air inlet valve, disconnect the independent air source and conduct an airtightness test. Turn on the control unit and detect the pressure change. After the airtightness inspection is normal, fill the test pressure required through the external air source. If it is necessary to maintain a certain pressure range, the pressure relief valve can be manually adjusted to reach the specified initial pressure (the initial pressure is generally less than 1 Mpa). The controller 10 can control the heating power of the heating device, the heating temperature, the stirring speed of the stirring device, the pressure detection of the pressurizing device, the pressure change curve, the temperature change curve, the test time, and the test cycle will be automatically closed. The safety valve 7 is to avoid accidents caused by excessive pressure. The instrument can set the temperature to reach from room temperature to 350 °C. The test temperature should be lower than the highest heat-resistant point of the non-metallic part to avoid melting and deformation of the non-metallic part and inability to conduct subsequent experiments. The inlet and outlet of the stirrer are for connecting tap water to dissipate heat from the stirrer motor housing. After the test, the non-metallic material can be tested for a series of tests such as its tensile properties to evaluate its compatibility after this aging test.
[0037] The usage steps of the above high-temperature and high-pressure compatibility device are as follows:
[0038] The first step: Fix the non-metallic material or other irregular materials in the hollow structure 2, place the hollow structure 2 into the tank body 1, cover the tank cover 3, and use clamps for sealing or other methods to make the tank body and the tank cover fit tightly.
[0039] Step 2: Turn on the power switch of the device. After performing the airtightness test, perform pressurization and depressurization. Fill with air, oxygen, or other gases according to the test requirements. The initial pressure can be set within the pressure range by yourself. For example, the initial pressure can be set to 0.2 MPa by stamping. Set the test temperature to 150 °C, the stirring rate to 200 r / min. Turn on the heating device and the stirring device, and start the test.
[0040] Step 3: Through the online monitoring curve and the control system, the test time, pressure, and temperature changes can be accurately recorded.
[0041] Step 4: After the test is completed, evaluate the appearance of the liquid, the performance of the solution, and the subsequent tensile test of non-metallic materials, etc.
[0042] The device of the present utility model can simulate the working condition characteristics of the actual high temperature and high pressure of the engine, and test the compatibility of non-metallic materials with oil under high temperature and high pressure (the temperature can be controlled at RT-350 °C, the pressure is 0.1-3 MPa); through the controller, the temperature, pressure, and stirring rate can be accurately controlled, ensuring that the temperature is accurate to 0.1 °C, the pressure is accurate to 0.01 MPa, and the stirring rate can reach , 120-800 r / min. The device can monitor the pressure and temperature changes. After the test expires, the instrument stops working, and at the same time, it prompts the tester through a beeping sound. The instrument is simple to operate, practical and reliable; it can also consider the material compatibility test of non-metallic materials in harsh and complex environments, such as the accelerated oxidation and acidification processes of coolant.
Claims
1. A high-temperature and high-pressure compatibility test device for solid materials and liquid materials, characterized in that It includes a tank body (1) for accommodating liquid materials, a hollow structure (2) provided inside the tank body (1) for placing solid materials while facilitating the internal and external flow of the liquid materials, a pressurizing device, a heating device, and a monitoring and control device. A tank cover (3) sealed to the tank body (1) is provided at the top of the tank body (1), and the pressurizing device is provided on the tank cover (3); the heating device is used to heat the tank body (1); the monitoring and control device is electrically connected to the pressurizing device and the heating device and is used to control and monitor the pressure and temperature inside the tank body (1).
2. The compatibility testing device according to claim 1, wherein The hollow structure (2) is a mesh-type, semi-mesh-type, or isolated-type hollow structure.
3. The compatibility test device according to claim 1, characterized in that A stirring device (4) is further provided on the tank cover (3), and the stirring device (4) is used to stir the solid materials and liquid materials inside the hollow structure (2).
4. The compatibility testing device according to claim 3, wherein The stirring device (4) includes a stirring motor and a stirrer, and the stirring motor is provided with a water inlet and a water outlet for heat dissipation.
5. The compatibility testing device according to claim 1, wherein The pressurizing device includes an air inlet assembly (5), a deflation assembly (6), and a safety valve (7).
6. The compatibility test device according to claim 1, characterized in that, The monitoring and control device includes a temperature sensor (8), a pressure sensor (9), and a controller (10). The temperature sensor (8) and the pressure sensor (9) are provided on the tank cover (3) and are electrically connected to the controller (10).
7. The compatibility testing device according to claim 1, wherein The tank cover (3) and the tank body (1) are fixedly connected by a snap or threaded structure.
8. The compatibility testing device according to claim 1, wherein The tank body (1) is made of high-pressure resistant material.
9. The compatibility test device according to claim 1, wherein, The liquid materials include coolant and lubricating oil.
10. The compatibility test device according to claim 1, characterized in that The solid materials include non-metallic materials; the non-metallic materials are PA12, PP, PE, ABS, PA66, or PTFE.