CN113447542A - High-temperature high-pressure electrochemical reaction kettle device capable of applying load - Google Patents
High-temperature high-pressure electrochemical reaction kettle device capable of applying load Download PDFInfo
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- CN113447542A CN113447542A CN202110752157.XA CN202110752157A CN113447542A CN 113447542 A CN113447542 A CN 113447542A CN 202110752157 A CN202110752157 A CN 202110752157A CN 113447542 A CN113447542 A CN 113447542A
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Abstract
The invention provides a high-temperature high-pressure electrochemical reaction kettle device capable of applying load, and belongs to the technical field of reaction kettles. The device includes the cauldron body and kettle cover, and the cauldron body contains the sample with the kettle cover center and adds the device, adds the design of department of holding and has special sealing device to prevent inside release, the weeping phenomenon of appearing of reation kettle kernel, there is ventilation, air outlet means kettle cover top, can carry out the electrochemistry experiment to pressure boost and input special gas in the cauldron, and reation kettle cover still designs pressure sensor, thermocouple placer and in order to carry out the high-pressure electrochemical reaction experiment of high temperature, and the inside condition of real time monitoring reation kettle. The device has the advantages of exquisite design, complete design system, accurate experimental test and independent innovativeness and technicality, and realizes the synchronous application of external load in the high-temperature high-pressure electrochemical test process from the design, thereby better simulating mechanical and chemical environmental tests under actual working conditions.
Description
Technical Field
The invention relates to the technical field of reaction kettles, in particular to a high-temperature high-pressure electrochemical reaction kettle device capable of applying load.
Background
The electrochemical reaction kettle is mainly applied to electrochemical test of materials, researches on the performance of the materials, and is a very common tool in the application of the electrochemical reaction kettle in corrosion science. The electrochemical reaction kettle can construct a special environment to test the material by applying simulated liquid and gas under a simulated real working condition in a closed environment of the reaction kettle, analyze and predict the corrosion process of the material under an actual working condition according to a test result, and study the corrosion mechanism of the material.
The traditional electrochemical reaction kettle mainly adopts a kettle body with high temperature, high pressure and rotating speed, and mainly adopts chemical environment simulation for corrosion experiments of materials under actual working conditions, so that the influence of mechanical action on corrosion cannot be reflected. The difficulty of the insufficient development of equipment under the combined action of mechanical and chemical corrosion mainly exists in the following aspects:
(1) the load applying position of the electrochemical reaction kettle is difficult to design;
(2) after the load is applied, the sealing problem of the electrochemical reaction kettle is difficult to solve, gas and liquid leakage is easy to occur, the simulated environment is damaged, and toxic gas leakage can be caused if toxic gas exists in the environment;
(3) after the load is applied, the phenomenon that the sample slides between the kettle body due to stress is easy to occur in the operation process, so that the sealing is insufficient, and the pressure is reduced.
For a series of difficulties existing in an electrochemical reaction kettle for simulating an actual working condition environment, the electrochemical reaction kettle for applying load at the present stage is still in a stage with less development and is difficult to meet the requirements in the industry, so that the electrochemical reaction kettle has good actual background and future foresight.
Disclosure of Invention
The invention aims to provide a high-temperature high-pressure electrochemical reaction kettle device capable of applying load, which can perform electrochemical test in the process of applying load to a sample, has excellent sealing property and is capable of performing electrochemical test in a high-pressure high-temperature special gas-containing environment (such as SO)2、H2S、CO2) The characteristic of the following work.
The device comprises a kettle body and a kettle cover, wherein a sample clamping device is arranged in the center of the kettle body and the kettle cover, a sealing gasket is arranged at the clamping position of the sample clamping device, an O-shaped ring seal is arranged at the contact position of the kettle body and the kettle cover, the sample clamping device comprises a pressure pad and a pressure nut, a sample is fixed in the pressure nut through the pressure pad, a pair of gas channels are arranged on the side surface of the kettle cover, the gas channels are perforated from the side surface of the kettle cover and are directly communicated to the gas hole position on the lower surface of the kettle cover, the gas channels outside the kettle cover are formed by sequentially connecting a valve 1/4, a 1/4 pipe and a double clamping sleeve rotating outer cone thread 1/4, the gas channels are connected with the kettle cover through the double clamping sleeve rotating outer cone thread 1/4, the gas hole on the lower surface of the kettle cover is connected with a threaded gas pipe shell which can go deep into the kettle body 3/4, the penetrating position of a reference electrode and an annular electrode is reserved on the kettle cover, a pressure monitoring device is arranged on the side surface of the kettle cover, and a thermocouple shell is arranged on the kettle cover, avoid the direct and cauldron internal corrosion environment contact of thermocouple, cauldron body upper surface leaves round hexagon socket head cap screw, and hexagon socket head cap screw corresponds with the screw hole position on the kettle cover, makes kettle cover and the closely closed of cauldron body through hexagon socket head cap screw, forms the absolute airtight space.
Wherein, the reference electrode is obliquely arranged, and the inclination angle is 20-80 degrees, so as to ensure that the reference electrode is close to the middle surface of the sample.
The pressure monitoring device comprises an unloading valve, a pressure gauge joint, a four-way joint 1/4 and a pressure sensor, wherein the unloading valve, the pressure gauge joint, the four-way joint 1/4 and the pressure sensor are fixedly sealed through a pipeline and threads between the unloading valve, the pressure gauge joint, the four-way joint 1/4 and the pressure sensor, four ports of the four-way joint 1/4 are respectively connected with the kettle cover, the unloading valve, the pressure sensor and the pressure gauge joint, and the other end of the pressure gauge joint is connected with the pressure gauge.
The test sample is threaded, the pressing nut penetrates through the center of the kettle body, the pressing pad is nested with the pressing nut, the pair of sealing rings are arranged at the position, close to the inner part of the kettle body, of the pressing pad, the sample head is exposed at the upper part of the kettle cover and clamped on the loading equipment, and the high-temperature high-pressure electrochemical reaction experiment under the special environment is carried out under the loading of the loading equipment.
The pressure pad and the pressure nut are obliquely engaged with the kettle body at an angle of 5-80 degrees, and the nesting between the pressure pad and the pressure nut is matched by fastening and locking.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the load can be applied to the electrochemical reaction kettle, and the airtightness of the interior of the kettle body can be ensured after the load is applied; meanwhile, the electrochemical test for sample loading can be carried out under the environment of high temperature, high pressure and special gas, and vibration and micro-sliding can be reduced in the sample loading process, so that the accurate experiment can be realized.
Drawings
FIG. 1 is a schematic structural diagram of a high-temperature high-pressure electrochemical reaction kettle device capable of applying load according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a top view of the high-temperature high-pressure electrochemical reaction vessel apparatus capable of applying a load according to the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is an enlarged view of portion C of FIG. 2;
fig. 6 is an enlarged view of a portion D in fig. 2.
Wherein: 1-kettle cover; 2-O-shaped rings; 3-kettle body; 4-a sealing gasket; 5-a pressure pad; 6-sample; 7-pressing a nut; 8-valve 1/4; 9-1/4 tubes; 10-double-bayonet external taper thread 1/4; 11-a reference electrode; 12-socket head cap screw; 13-a thermocouple housing; 14-an unloading valve; 15-pressure gauge; 16-pressure gauge connection; 17-four-way joint 1/4; 18-a pressure sensor; 19-a ring electrode; 20-sealing the column.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a high-temperature high-pressure electrochemical reaction kettle device capable of applying load.
As shown in figure 1, figure 2 and figure 3, the device comprises a kettle cover 1 and a kettle body 3, wherein a sample adding and holding device is arranged at the center of the kettle body 3 and the kettle cover 1, a sealing gasket 4 is arranged at the adding and holding part of the sample adding and holding device, the center hole of the kettle cover 1 is shown in figure 6, an O-shaped ring 2 is arranged at the contact part of the kettle body 3 and the kettle cover 1 for sealing, the sample adding and holding device comprises a pressure pad 5 and a pressure nut 7, a sample 6 is fixed in the pressure nut 7 through the pressure pad 5, a pair of gas channels are arranged on the side surface of the kettle cover 1, the gas channels are perforated from the side surface of the kettle cover 1 and directly communicated to the gas hole position on the lower surface of the kettle cover 1, the gas channel outside the kettle cover 1 is formed by sequentially connecting a valve 1/48, a tube 1/4 and a double-sleeve-rotating outer cone screw thread 1/410, the double-sleeve-rotating outer cone screw thread 1/410 is connected with the kettle cover 1, a section of threaded gas hole on the lower surface of the kettle cover is connected with a tube shell which can deeply penetrate into the kettle body 33/4, the reference electrode 11 and the annular electrode 19 pass through the position of leaving on the kettle cover 1, and the side of the kettle cover 1 sets up pressure monitoring device, sets up thermocouple shell 13 on the kettle cover 1, and a round of hexagon socket head cap screw 12 is left on the 3 upper surfaces of the kettle body, and the hexagon socket head cap screw 12 corresponds with the screw hole position on the kettle cover 1, makes the closely closed of kettle cover 1 and kettle body 3 through hexagon socket head cap screw 12, forms the absolute airtight space.
The reference electrode 11 is placed obliquely, and the inclination angle ensures that the reference electrode 11 is close to the middle surface of the sample 6.
The pressure monitoring device is connected with the kettle cover 1 as shown in fig. 5, the pressure monitoring device comprises an unloading valve 14, a pressure gauge 15, a pressure gauge joint 16, a four-way joint 1/417 and a pressure sensor 18, four ports of the four-way joint 1/417 are respectively connected with the kettle cover 1, the unloading valve 14, the pressure sensor 18 and the pressure gauge joint 16, and the other end of the pressure gauge joint 16 is connected with the pressure gauge 15.
The sample 6 is threaded, and the pressure mother 7 passes the 3 centers of the cauldron body, and 5 nested pressure mother 7 of pressure pad, pressure pad 5 are close to 3 internal positions of cauldron body and set up a pair of sealing washer, can completely cut off interior external environment, and on 1 upper portion of kettle cover, 6 first exposes of sample, and the centre gripping is equipped carrying on, carries on the high temperature high pressure electrochemical reaction experiment under the special environment under carrying on the equipment carrying on.
The pressure pad 5 and the pressure nut 7 are obliquely occluded with the kettle body 3 at an angle of 50 degrees, and the nesting between the pressure pad 5 and the pressure nut 7 is matched by fastening and locking. Therefore, the two ends of the sample can be clamped, the larger the occlusal force is increased along with the load application due to the structural design, the sample is clamped firmly, so that the sample is not vibrated and slightly slides, and the experimental error is reduced; and the contact of the inner environment and the outer environment of the micro-gap can not occur in the experimental process, the consistency of the environment in the kettle is ensured, and the accuracy of the experiment is improved.
As shown in fig. 4, a seal post 20 is provided across the position of the ring electrode 19.
The working principle of the device is as follows:
firstly, cleaning a reaction kettle, then, well assembling a reference electrode and a counter electrode, fixing a processed load sample with threads at two ends with the center of a kettle body through the threads, and buckling and clamping the sample to avoid the vibration and the sliding of the sample; then pouring the prepared solution, sealing the kettle body by using screws, closing all air valves, opening the air inlet valve, pumping certain air pressure, closing the air inlet valve, and indicating that the reaction kettle has good tightness if the air pressure in the kettle is not changed after a certain period of time; opening the gas inlet and outlet valves, filling nitrogen or inert gas into the gas inlet and outlet valves, deoxidizing the reaction kettle, filling a small amount of gas (the gas is determined according to the experiment, or the gas such as nitrogen and the like which is irrelevant to the reaction), heating the reaction kettle to the target temperature, filling a specific experiment atmosphere with specific gas pressure, applying a target load after the gas pressure is stable, and then carrying out electrochemical test.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a high temperature high pressure electrochemical reaction cauldron device that can apply load, includes kettle cover (1) and cauldron body (3), its characterized in that: the center of the kettle body (3) and the kettle cover (1) is provided with a sample clamping device, a sealing gasket (4) is arranged at the clamping position of the sample clamping device, an O-shaped ring (2) is arranged at the contact position of the kettle body (3) and the kettle cover (1) for sealing, the sample clamping device comprises a pressure pad (5) and a pressure nut (7), a sample (6) is fixed in the pressure nut (7) through the pressure pad (5), the side surface of the kettle cover (1) is provided with a pair of gas channels, the gas channels are punched at the side surface of the kettle cover (1) and are directly communicated to the gas hole position at the lower surface of the kettle cover (1), the gas channel outside the kettle cover (1) is formed by sequentially connecting a valve 1/4(8), a 1/4 pipe (9) and a double-clamping sleeve outer-cone thread 1/4(10), the double-sleeve outer cone thread 1/4(10) is connected with the kettle cover (1), and the gas hole at the lower surface of the kettle cover is connected with a section of a gas tube shell with a thread which can go deep into the kettle body (3)3/4, the position of passing of reference electrode (11) and cyclic annular electrode (19) is left on kettle cover (1), kettle cover (1) side sets up pressure monitoring device, set up thermocouple shell (13) on kettle cover (1), avoid the direct and cauldron internal corrosion environment contact of thermocouple, cauldron body (3) upper surface is left round hexagon socket head cap screw (12), hexagon socket head cap screw (12) correspond with the screw hole position on kettle cover (1), make kettle cover (1) and cauldron body (3) closely closed through hexagon socket head cap screw (12), form the absolute airtight space.
2. A high-temperature high-pressure electrochemical reaction vessel apparatus capable of applying a load according to claim 1, wherein: the reference electrode (11) is obliquely arranged, and the inclination angle is 25-80 degrees, so that the reference electrode (11) is close to the middle surface of the sample (6).
3. A high-temperature high-pressure electrochemical reaction vessel apparatus capable of applying a load according to claim 1, wherein: the pressure monitoring device comprises an unloading valve (14), a pressure gauge (15), a pressure gauge joint (16), a four-way joint 1/4(17) and a pressure sensor (18), wherein the unloading valve (14), the pressure gauge (15), the pressure gauge joint (16), a four-way joint 1/4(17) and the pressure sensor (18) are fixedly sealed through a pipeline and threads between the unloading valve (14), the pressure gauge (15), the pressure gauge joint (16), the four ports of the four-way joint 1/4(17) are respectively connected with a kettle cover (1), the unloading valve (14), the pressure sensor (18) and the pressure gauge joint (16), and the other end of the pressure gauge joint (16) is connected with the pressure gauge (15).
4. A high-temperature high-pressure electrochemical reaction vessel apparatus capable of applying a load according to claim 1, wherein: the test sample (6) is threaded, the pressing nut (7) penetrates through the center of the kettle body (3), the pressing cushion (5) is embedded into the pressing nut (7), the pressing cushion (5) is close to the inner position of the kettle body (3) and is provided with a pair of sealing rings, the head of the test sample (6) is exposed on the upper portion of the kettle cover (1) and clamped on external loading equipment, and a high-temperature high-pressure electrochemical reaction experiment is carried out under a special environment under the loading of the loading equipment.
5. A high-temperature high-pressure electrochemical reaction vessel apparatus capable of applying a load according to claim 1, wherein: the pressure pad (5) and the pressing nut (7) are obliquely occluded with the kettle body (3) by 5-80 degrees, and the nesting between the pressure pad (5) and the pressing nut (7) is matched by fastening and locking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110752157.XA CN113447542B (en) | 2021-06-30 | 2021-06-30 | High-temperature high-pressure electrochemical reaction kettle device capable of applying load |
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| CN202110752157.XA CN113447542B (en) | 2021-06-30 | 2021-06-30 | High-temperature high-pressure electrochemical reaction kettle device capable of applying load |
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| CN113447542A true CN113447542A (en) | 2021-09-28 |
| CN113447542B CN113447542B (en) | 2022-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113903236A (en) * | 2021-10-22 | 2022-01-07 | 中铁二院工程集团有限责任公司 | Intelligent temperature and pressure control difference water-rock action contrast monitoring experimental device and experimental method thereof |
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| CN113903236B (en) * | 2021-10-22 | 2023-04-25 | 中铁二院工程集团有限责任公司 | Intelligent control Wen Yacha opposite-property water rock action contrast monitoring experimental device and experimental method thereof |
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