Testing device for simulating high-temperature and high-pressure dynamic wear corrosion environment

Abstract

The utility model discloses a test device for simulating a high-temperature and high-pressure dynamic wear corrosion environment, which comprises a reaction kettle and a support cabinet body, the reaction kettle is arranged in a heating furnace, the heating furnace can be vertically lifted and supported on one side of the support cabinet body, and a kettle cover corresponding to the reaction kettle is horizontally arranged on the corresponding support cabinet body above the heating furnace; a sample clamp is arranged below the kettle cover and is composed of a plurality of annular clamp units which are arranged up and down, each clamp unit comprises an upper annular plate and a lower annular plate which are horizontally arranged up and down, the lower surface of each upper annular plate and the upper surface of each lower annular plate are provided with a plurality of uniform sample grooves and connecting holes which are in one-to-one correspondence, and a flow baffle is arranged between every two adjacent clamp units; a stirrer is arranged in the center above the kettle cover, a stirring rod of the stirrer vertically penetrates through the kettle cover downwards, and a straight paddle is arranged on the corresponding stirring rod between the upper annular plate and the lower annular plate of each clamp unit. The device can be used for selection of service materials in the high-temperature and high-pressure acid environment, service life evaluation and corrosion and abrasion behavior and mechanism research.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of metal material testing, especially relates to a test device of simulating high temperature and high pressure dynamic wear and corrosion environment. BACKGROUND

[0002] Hydrometallurgy has a wide application in metal extraction, and is a highly flexible and controllable process, which is suitable for various types of ores and metals. However, when hydrometallurgy smelts metals, the instruments used are in a complex environment, and the corrosion behavior is difficult to clarify. The corrosion and wear performance occurs inside the instrument and is difficult to be seen, so the requirement for the instrument material is high. Titanium material is often used to prepare instruments due to its high strength, excellent corrosion resistance, high melting point and good biocompatibility. However, titanium material is a rare metal, and its mining and processing cost is high, resulting in expensive material price. Therefore, it is a technical problem expected to be solved by those skilled in the art to use other low-cost metal materials for simulation test and explore suitable metal materials to complete the preparation of hydrometallurgy instruments.

[0003] Most of the existing test devices can only perform tests at room temperature, and the wear method is mostly friction wear, which has a large difference from the scouring wear in actual engineering. In addition, the existing test devices often use flat stirring paddles to stir the reaction particles, which easily causes the particles to deposit at the bottom of the test device, thereby causing insufficient reaction. SUMMARY

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a test device for simulating high temperature and high pressure dynamic wear and corrosion environment. The utility model can realize material performance evaluation under the combined action of multiple influence factors in complex working condition environments such as high temperature, high pressure, acidic medium and scouring wear. The scouring state of each position inside the test device is uniform and stable, and large quantities of test samples can be tested to maintain the consistency of the test samples.

[0005] The technical scheme of the utility model is as follows:

[0006] A test device for simulating high temperature and high pressure dynamic wear and corrosion environment, comprising a reaction kettle and a support cabinet, the reaction kettle is arranged in a heating furnace, the heating furnace can be vertically lifted and supported on one side of the support cabinet, a kettle cover corresponding to the reaction kettle is horizontally arranged on the support cabinet above the heating furnace, an air inlet and an air outlet are arranged on the kettle cover, the air inlet is connected with an air cylinder through an air pipe, an air inlet valve is arranged on the air pipe, and an air outlet valve is arranged on the kettle cover corresponding to the air outlet.

[0007] The sample clamp is arranged below the kettle cover and is composed of a plurality of clamp units arranged in an up-down mode, each of the clamp units is annular and comprises an upper annular plate and a lower annular plate arranged in an up-down mode, the upper annular plate and the lower annular plate are provided with a corresponding sample groove on the lower surface of the upper annular plate and the upper surface of the lower annular plate, meanwhile, a plurality of corresponding connecting holes are uniformly distributed on the upper annular plate and the lower annular plate, so as to facilitate the insertion of the two ends of the sample to be tested into the sample groove and the connection of the upper annular plate and the lower annular plate by using the connecting piece, thereby clamping the sample to be tested between the upper annular plate and the lower annular plate, a plurality of baffle plates are arranged between the adjacent two clamp units, all the baffle plates are uniformly distributed along the circumference of the annular plate, and the upper end of the baffle plate is connected with the lower annular plate of the upper clamp unit, and the lower end of the baffle plate is connected with the upper annular plate of the lower clamp unit; a stirrer is arranged at the center of the kettle cover, the stirring rod of the stirrer vertically penetrates the kettle cover and is located at the center of the sample clamp, and a flat blade is arranged on the corresponding stirring rod between the upper annular plate and the lower annular plate of each clamp unit.

[0008] Further, a folding turbine paddle is arranged on the corresponding stirring rod below the sample clamp.

[0009] Further, the sample clamp is arranged below the kettle cover by using a plurality of uniformly distributed connecting rods, the lower end of each connecting rod is connected with the upper annular plate of the uppermost clamp unit, and the upper end of each connecting rod is connected with the kettle cover.

[0010] Further, a gasket made of PE Ek is arranged in the sample groove, which is used for preventing the potential corrosion of the sample to be tested.

[0011] Further, the reaction kettle is made of titanium.

[0012] Further, a pressure gauge and a pressure sensor are arranged on the air pipe, the pressure sensor is connected with a display operation screen arranged on the support cabinet, so as to display the pressure value in the reaction kettle on the display operation screen.

[0013] Further, a temperature sensor is arranged in the heating furnace, which is used for detecting the temperature in the reaction kettle, the temperature sensor is connected with the display operation screen, so as to display the temperature value in the reaction kettle on the display operation screen.

[0014] Further, the stirrer is connected with the display operation screen, so as to control the stirring rate of the stirrer.

[0015] Further, a base is arranged at the bottom of the support cabinet, and universal wheels are arranged at the four corners of the base.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1. The utility model discloses a SB 265Gr.7 (national standard TA9) is used as the main part material of the reaction kettle, so that the test device can satisfy the material corrosion test requirement under the severe environment such as sulfuric acid, acetic acid and the like. Meanwhile, the stirring system (including flat blade paddle, baffle and folding turbine paddle) in the test device can ensure that the particles are mixed uniformly, reduces the circulation and particle deposition, thereby can improve the accuracy and reliability of the evaluation of the sample to be tested. Specifically, the flat blade paddle can improve the particle suspension effect, and the particles are mixed uniformly, the baffle can effectively reduce the circulation, and the particles rotate with the liquid, and the folding turbine paddle can produce axial flow, and the solid particles are kept suspended.

[0018] 2. The utility model discloses a PEEK material gasket is arranged in the sample recess of the sample clamp, separates the sample to be tested and the metal sample clamp, thereby avoiding the potential corrosion of the sample to be tested, and a large number of samples can be placed on the sample clamp at the same time, reducing the test variable, and further improving the accuracy of the evaluation of the sample to be tested.

[0019] 3. The utility model discloses simple structure, easy installation and removal, easy maintenance and cleaning, further reduce the use cost. It is helpful to screen out the material with superior performance in the research and development stage, and avoids the material waste in the subsequent production and use process. DRAWINGS

[0020] Figure 1 The utility model discloses a structure schematic diagram.

[0021] Figure 2 The structure schematic diagram of each clamp unit.

[0022] Figure 3 The schematic diagram of the two end faces of upper ring plate and lower ring plate.

[0023] Wherein: 1 - support cabinet body;2 - heating furnace;3 - display operation screen;4 - inlet valve;5 - stirrer;6 - exhaust valve;7 - kettle cover;8 - connecting rod;9 - clamp unit;91 - upper ring plate;92 - lower ring plate;93 - screw;94 - nut;A - connecting hole;B - sample recess;10 - baffle;11 - folding turbine paddle;12 - universal wheel;13 - sample to be tested;14 - water outlet;15 - water inlet. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0025] Reference Figure 1 , Figure 2 And Figure 3The utility model provides a kind of test device of simulating high temperature high pressure dynamic wear and tear corrosion environment, including reaction kettle and support cabinet 1, the reaction kettle is arranged in heating furnace 2, the heating furnace 2 can be vertically lifted support setting in support cabinet 1 one side, corresponding support cabinet 1 is horizontally provided with the kettle cover 7 corresponding with reaction kettle above heating furnace 2, the kettle cover 7 is equipped with air inlet and exhaust port, air inlet is connected with gas cylinder by gas pipe, and air inlet valve 4 is equipped on gas pipe, exhaust port is equipped with exhaust valve 6 on corresponding kettle cover.

[0026] Kettle cover 7 below is equipped with test sample clamp, the test sample clamp is made of a plurality of clamp units 9 arranged in upper and lower, each clamp unit 9 is annular and includes horizontally arranged upper ring plate 91 and lower ring plate 92, upper ring plate 91 and lower ring plate 92 are arranged in upper and lower, and the lower surface of upper ring plate 91 and the upper surface of lower ring plate 92 are equipped with one-to-one corresponding test sample recess b, while upper ring plate 91 and lower ring plate 92 are evenly distributed with a plurality of one-to-one corresponding connecting holes a, so as to facilitate the both ends of the test sample 13 to be inserted into test sample recess b and to be connected with upper ring plate 91 and lower ring plate 92 by connecting piece, so as to clamp the test sample 13 between upper ring plate 91 and lower ring plate 92, a plurality of baffle plates 10 are arranged between adjacent two clamp units 9, all baffle plates 10 are evenly distributed along the circumference of ring plate, and the upper end of baffle plate 10 is connected with the lower ring plate 92 of the upper clamp unit 9, and the lower end is connected with the upper ring plate 91 of the lower clamp unit 9; stirrer 5 is arranged in the center above kettle cover 7, the stirring rod of stirrer 5 vertically penetrates kettle cover 7 and is located in the center of test sample clamp, and flat paddle is arranged on the corresponding stirring rod between upper ring plate 91 and lower ring plate 92 of each clamp unit 9.

[0027] The reaction kettle in the embodiment is made of titanium material SB 265Gr.7 (national standard TA9), so that the device can meet the material corrosion test requirements in harsh environments such as sulfuric acid and acetic acid, and has excellent corrosion resistance and strength under high temperature and high pressure.

[0028] The connecting piece connecting upper ring plate 91 and lower ring plate 92 in the embodiment is composed of screw rod 93 and nut 94, the both ends of screw rod 93 respectively extend out of upper ring plate and lower ring plate, and nut 94 is sleeved on screw rod 93 above upper ring plate 97 and below lower ring plate 92, so as to connect upper ring plate 91 and lower ring plate 92 together.

[0029] The clamp unit 9 in the embodiment can be multiple, and each clamp unit 9 can test a plurality of test samples 13 at a time. In the stirring process, the flat paddle on the stirring rod can improve the particle suspension effect in the reaction kettle, so that the particles are uniformly mixed.

[0030] The baffle 10 can effectively reduce the circulation, reduce the accumulation of particles rotating with the liquid at the reactor wall position, further ensure the uniform distribution of particles in the reactor liquid, and improve the accuracy and reliability of the evaluation of the sample to be tested.

[0031] In specific implementation, the test sample clamp is provided below the corresponding stirring rod with a folding turbine paddle 11. The folding turbine paddle 11 can generate axial flow to avoid the deposition of particles at the bottom of the reactor, so that the solid particles are suspended.

[0032] In specific implementation, the test sample clamp is provided below the reactor cover through a plurality of connection rods 8 evenly distributed, the lower end of all the connection rods 8 is connected with the upper ring plate 91 of the clamp unit 9 located at the uppermost end, and the upper end is connected with the reactor cover 7.

[0033] In specific implementation, the test sample recess b is provided with a gasket made of PE Ek, so as to avoid the direct contact of the sample to be tested with the upper and lower ring plates, thereby effectively preventing the potential corrosion of the sample to be tested 13, and further improving the accuracy of material evaluation.

[0034] In specific implementation, a pressure gauge and a pressure sensor are provided on the gas pipe, the pressure sensor is connected with the display operation screen 3 provided on the support cabinet, so as to display the pressure value in the reactor on the display operation screen 3, the air inlet valve 4 and the air outlet valve 6 are connected with the gas pipe, the air inlet valve 4 is connected with the gas cylinder through the gas pipe, and the air inlet valve 4 is opened and closed to charge, the air outlet valve 6 is connected with the gas pipe to introduce the tail gas into the absorption liquid, and the air outlet valve 6 is opened and closed to discharge and treat the tail gas. The heating furnace 2 is provided with a temperature sensor for detecting the temperature in the reactor, and the temperature sensor is connected with the display operation screen 3 to display the temperature value in the reactor on the display operation screen 3. The stirrer 5 is connected with the display operation screen 3 to facilitate the control of the stirring rate of the stirrer 5. In order to prevent the temperature of the stirrer from being too high, a condenser pipe is provided on the stirrer to cool the stirrer, and the two ends of the condenser pipe are respectively an inlet 14 and an outlet 15. The inlet 14 is used to connect the water inlet pipe to introduce condensing water, and the outlet 15 is used to connect the drain pipe to discharge the heat-exchanged water.

[0035] In specific implementation, the support cabinet 1 is provided with a base at the bottom, and universal wheels 12 are provided at the four corners below the base. It is convenient to move the test device as needed.

[0036] In use, a plurality of test samples 13 are clamped between the upper ring plate 91 and the lower ring plate 92 of each clamp unit 9, the test samples 13 are inserted into the test sample grooves of the upper ring plate 91 and the lower ring plate 92 respectively, and then the upper ring plate 91 and the lower ring plate 92 are connected through the connecting piece, so as to clamp the test samples 13 between the upper ring plate 91 and the lower ring plate 92. Before the test starts, the condensate water is opened to cool the stirrer, so as to prevent the temperature of the instrument from being too high during the test. Then, the corrosion medium is added into the reaction kettle, the heating furnace is raised, the reaction kettle and the kettle cover are connected and fixed together, the gas inlet valve 4 is opened to charge about 0.5 MPa of gas which has no influence on the experiment, the air tightness of the test device is checked to ensure the safety of the test device. Then, the gas is charged according to the test requirements to make the gas pressure meet the test requirements; and the heating rate is controlled through automatic adjustment of the heating power adjustment according to the test conditions. There are two modes in the heating process, one is the specified mode, the temperature is raised to the specified temperature and then the temperature is kept constant, the specified time is reached and the heating stops and the natural cooling is started, and the other is the programmed heating, the temperature is set in stages according to the experimental requirements, and the highest number of stages is twenty, and the temperature in the reaction kettle is displayed on the operation display screen 3 through the bottom temperature sensor. The stirring speed is set on the operation display screen, and the highest stirring speed is 999 RPM, and the particles can be uniformly dispersed in the reaction kettle at a low speed, and the test samples are dynamically corroded and washed and worn.

[0037] The lifting mechanism is arranged in the support cabinet 1 for lifting the heating furnace 2, and the rotating mechanism is arranged in the support cabinet for tilting the heating furnace 2, which is consistent with the prior art and is not limited here.

[0038] Finally, it should be noted that the above embodiments of the present application are only examples for illustrating the present application, and are not limitations on the embodiments of the present application. For ordinary skilled persons in the art, other different forms of changes and variations can be made on the basis of the above description. It is impossible to enumerate all the embodiments here. Any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A test apparatus for simulating a high temperature high pressure dynamic wear corrosion environment, characterized by, The utility model relates to a reaction kettle and support cabinet, the reaction kettle is arranged in the heating furnace, the heating furnace can be vertically lifted and supported and is arranged at one side of the support cabinet, the corresponding support cabinet is horizontally provided with the kettle cover corresponding with the reaction kettle above the heating furnace, the kettle cover is equipped with the air inlet and the exhaust port, the air inlet is connected with the gas cylinder through the air pipe, and the air inlet valve is arranged on the air pipe, the exhaust port is equipped with the exhaust valve on the corresponding kettle cover, The sample clamp is provided below the kettle cover, and the sample clamp is composed of a plurality of clamp units arranged in a top-down manner. Each clamp unit is annular and includes an upper annular plate and a lower annular plate arranged in a horizontal manner. The upper annular plate and the lower annular plate are arranged in a top-down manner, and the lower surface of the upper annular plate and the upper surface of the lower annular plate are provided with a one-to-one corresponding sample groove. Meanwhile, the upper annular plate and the lower annular plate are uniformly distributed with a plurality of one-to-one corresponding connecting holes. The connecting holes facilitate the insertion of the two ends of the sample to be tested into the sample groove and the connection of the upper annular plate and the lower annular plate by using connecting members. Thus, the sample to be tested is clamped between the upper annular plate and the lower annular plate. A plurality of baffle plates are arranged between the two adjacent clamp units. All the baffle plates are uniformly distributed along the circumference of the annular plate. The upper end of the baffle plate is connected with the lower annular plate of the upper clamp unit, and the lower end of the baffle plate is connected with the upper annular plate of the lower clamp unit. A stirrer is arranged at the center above the kettle cover. The stirring rod of the stirrer vertically penetrates the kettle cover and is located at the center of the sample clamp. A flat blade paddle is arranged on the corresponding stirring rod between the upper annular plate and the lower annular plate of each clamp unit.

2. The test device for simulating a high-temperature high-pressure dynamic wear corrosion environment according to claim 1, characterized in that, A folding turbine paddle is arranged on the corresponding stirring rod below the sample clamp.

3. The test device for simulating a high-temperature high-pressure dynamic wear corrosion environment according to claim 1 or 2, characterized in that, The sample clamp is arranged below the kettle cover by a plurality of uniformly distributed connecting rods. The lower end of each connecting rod is connected with the upper annular plate of the uppermost clamp unit, and the upper end of each connecting rod is connected with the kettle cover.

4. The test device for simulating a high-temperature high-pressure dynamic wear corrosion environment according to claim 1 or 2, characterized in that, A gasket made of PEEK is arranged in the sample groove to prevent potential corrosion of the sample to be tested.

5. The test apparatus of claim 1, wherein The reaction kettle is made of titanium.

6. The test apparatus of claim 1, wherein A pressure gauge and a pressure sensor are arranged on the air pipe. The pressure sensor is connected with a display and operation screen arranged on the support cabinet to display the pressure value in the reaction kettle on the display and operation screen.

7. The test apparatus of claim 6, wherein the test apparatus is configured to simulate a high temperature, high pressure, dynamic wear corrosion environment. A temperature sensor is arranged in the heating furnace to detect the temperature in the reaction kettle. The temperature sensor is connected with the display and operation screen to display the temperature value in the reaction kettle on the display and operation screen.

8. The test apparatus of claim 6 or 7, wherein the test apparatus is configured to simulate a high-temperature, high-pressure, dynamic wear-corrosion environment. The stirrer is connected with the display and operation screen to facilitate the control of the stirring rate of the stirrer.

9. The test apparatus of claim 1, wherein, A base is arranged at the bottom of the support cabinet. Universal wheels are arranged at the four corners below the base.

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