CN102426150B - Autoclave system used for high-temperature high-pressure steam oxidation corrosion test - Google Patents
Autoclave system used for high-temperature high-pressure steam oxidation corrosion test Download PDFInfo
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- CN102426150B CN102426150B CN 201110226643 CN201110226643A CN102426150B CN 102426150 B CN102426150 B CN 102426150B CN 201110226643 CN201110226643 CN 201110226643 CN 201110226643 A CN201110226643 A CN 201110226643A CN 102426150 B CN102426150 B CN 102426150B
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Abstract
The invention discloses an autoclave system used for a high-temperature high-pressure steam oxidation corrosion test. The system comprises a heating device, a temperature control device, a pressure measuring device and a working kettle. The working kettle consists of a kettle body, a kettle chamber and a kettle cover, with the kettle body connected to the kettle cover. The autoclave system also includes a pressure stabilizing kettle used for stabilizing the working kettle pressure and a connecting cylinder used for connecting the working kettle and the pressure stabilizing kettle. The pressure stabilizing kettle and the working kettle have the same structure, and are also provided with kettle bodies, kettle chambers and kettle covers. The connecting cylinder is provided with a through connecting channel along the length direction, and the cylinder body of the connecting cylinder is also equipped with a vent valve for controlling the flow of the connecting channel, one end of which is communicated with the kettle chamber of the working kettle and the other end of which is communicated with the kettle chamber of the pressure stabilizing kettle. The kettle covers of the working kettle and the pressure stabilizing kettle are both provided with deflation valves, and the kettle cover of the pressure stabilizing kettle is provided with a water injecting valve. The autoclave system of the invention has good sealing performance and can maintain stable pressure in the working kettle.
Description
Technical field
The present invention relates to the high temperature high pressure device of laboratory simulation corrosion usefulness, specifically be meant a kind of autoclave system that is used for high-temperature high-pressure steam oxidation corrosion test.
Background technology
At present, when carrying out High Temperature High Pressure simulation corrosion evaluation, usually adopt autoclave as experimental apparatus, particularly during the experiment aspect carrying out burning, usually need be 600～700 ℃ of temperature, therefore pressure 20～35MPa, the sealing to autoclave has very high requirement, and needs the material can high-temperature corrosion resistance.But the sealing of existing autoclave is also bad, leaks easily when experimentizing.Find also that when experimentizing along with experiment is carried out, because the minimizing of vapour content, what can not keep-up pressure at a certain temperature is stable, can the accuracy of experimental result be exerted an influence.
Summary of the invention
The purpose of this invention is to provide a kind of autoclave system that is used for high-temperature high-pressure steam oxidation corrosion test, this autoclave system has excellent sealing performance, and can keep the pressure stability in the work still.
Above-mentioned purpose of the present invention is achieved by the following technical solution: a kind of autoclave system that is used for high-temperature high-pressure steam oxidation corrosion test, this autoclave system comprises heating arrangement, attemperating unit, pressure tester and work still, described work still has kettle, still chamber and kettle cover, kettle is connected with kettle cover, it is characterized in that: this autoclave system also comprises voltage stabilizing still that is used for steady operation still pressure and the connecting cylinder that connects described work still and voltage stabilizing still, described voltage stabilizing still is identical with work still structure, also has kettle, still chamber and kettle cover, described connecting cylinder is provided with the interface channel of perforation along the cylindrical shell length direction, also be provided with the gas valve of the flow that is used to control described interface channel on the cylindrical shell of described connecting cylinder, one end of described interface channel is communicated with the still chamber of work still, the other end is communicated with the still chamber of voltage stabilizing still, be equipped with air-outlet valve on the kettle cover of described work still and voltage stabilizing still, the kettle cover of described voltage stabilizing still is provided with Water filling valve.
Among the present invention, the oral area in still chamber is the arc structure of shrinkage type in described work still and the voltage stabilizing still, to reduce leak gas area and gas leakage risk.
Among the present invention, the contact site of kettle cover and kettle is arc structure in described work still and the voltage stabilizing still, described kettle cover has outstanding contact block downwards, the outward flange of described contact block is the arc surface of evagination, described kettle has the ring gear of circular arc type at opening part, and described kettle cover is with after kettle is connected, and the arc surface of described contact block compresses with the ring gear of described kettle and contacts, make kettle cover closely contact each other, to improve sealing property with kettle.
Among the present invention, described connecting cylinder is the stainless steel cylinder, have and the perpendicular screw of described interface channel in the middle of the described connecting cylinder, described gas valve is that the bottom is the column type screw rod of round platform, can bear High Temperature High Pressure, described gas valve is installed in the described screw, controls it by screw rod and moves up and down the purpose that reaches the described interface channel flow of control.
Among the present invention, described Water filling valve is the bolt that stretches in the voltage stabilizing still, can bear High Temperature High Pressure.
Among the present invention, the kettle of described work still and voltage stabilizing still all has vertical fastening bolt, offer the perforation of passing for described fastening bolt on the kettle cover, it is fixing to be spirally connected by clamp nut after described fastening bolt passes and bores a hole, thereby kettle and kettle cover are fastenedly connected.
Among the present invention, described heating arrangement is the resistance wire around the kettle of described work still and voltage stabilizing still, described attemperating unit comprises the temperature control panel of work still and the temperature control panel and the thermometer of thermometer and voltage stabilizing still, the thermometer that the bottom of the kettle cover of described work still and voltage stabilizing still is equipped with straight down and extend in the still chamber is placed tube, two thermometers correspondence respectively are installed in two thermometers and place in the tube, the temperature control panel of work still links to each other with resistance wire with the thermometer of work still respectively, the temperature control panel of voltage stabilizing still links to each other with resistance wire with the thermometer of voltage stabilizing still respectively, the temperature control panel shows the temperature value of thermometer and resistance wire respectively, and described pressure tester is the tensimeter that links to each other with the still chamber of described work still.
Among the present invention, described autoclave system also comprise the kettle outer wall that coats described work still and voltage stabilizing still and resistance wire is coated in heat-insulation layer.
Among the present invention, contacting of kettle and kettle cover is designed to the circular arc contact, the kettle vessel port is designed to interior arc structure, reduce the area of vessel port, these two designs can make the sealing property of autoclave be greatly improved; The outer voltage stabilizing still that connects a steady pressure of autoclave working still, middle by valve control, can come the inflow of water in the control stabilization still to come the pressure of steady operation still thus by the switch of by-pass valve control.
During work, at first determine in the work still, to add the amount of water by Theoretical Calculation, fixedly work in the autoclave system still and voltage stabilizing still kettle cover, the autoclave system sealing is good, on the temperature control panel, configure temperature then, two values of temperature of the thermometer that the temperature of resistance wire is arranged on the temperature control panel and insert by kettle cover, treat to be heated in the work still corresponding temperature, the pressure of reading on tensimeter should should be consistent with the pressure of needs, if pressure is inconsistent, can be pressed into water by steam discharge decompression and voltage stabilizing still and pressurizes and reach the force value of needs.After the temperature and pressure that needs was stable, promptly Timing carried out corrosion experiment.Carry out in the process in experiment, can occur the problem that pressure descends unavoidably, at this moment, can heat the voltage stabilizing still, pressure can rise in the voltage stabilizing still, when treating that voltage stabilizing still pressure is slightly larger than the work still, slowly open the valve of connection work still and voltage stabilizing still, allow water (water vapour) slowly feed in the work still, note the pressure of observation work still this moment, when treating that its pressure reaches desirable value, valve-off is the pressure in the scalable steady operation still thus.If the water yield is not enough in the voltage stabilizing still, pressure in the voltage stabilizing still can be shed, open the aquaporin that adds of voltage stabilizing kettle cover, can water filling in the voltage stabilizing still.After experiment finishes, the pressure in work still and the voltage stabilizing still is laid down in the lump, treat that taking out sample after it cools off gets final product.
With compare in the prior art, autoclave of the present invention system has following remarkable result:
(1) can realize the stable of pressure in the sample autoclave working process;
(2) improved the sealing property of autoclave greatly;
(3) simple in structure, produce easily.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
Fig. 1 is the one-piece construction synoptic diagram of autoclave of the present invention system;
Fig. 2 is the structural representation of voltage stabilizing still in the autoclave of the present invention system;
Fig. 3 is the front elevation of still and voltage stabilizing still kettle of working in the autoclave of the present invention system;
Fig. 4 is the vertical view of still and voltage stabilizing still kettle of working in the autoclave of the present invention system;
Fig. 5 is that work in the autoclave of the present invention system kettle of still and voltage stabilizing still is connected partial enlarged drawing with kettle cover, shows the relation of being tightly connected of kettle and kettle cover;
Fig. 6 is work in the autoclave of the present invention system still and voltage stabilizing still connecting portion enlarged drawing, shows the structure of connecting cylinder.
Description of reference numerals
1, heat-insulation layer, 2, resistance wire, 3, kettle, 31, ring gear,
4, lead, 5, the temperature control panel, 6, thermometer, 7, kettle cover,
71, contact block, 8, clamp nut, 9, tensimeter, 10, gas valve,
11, thermometer is placed tube, and 12, Water filling valve, 13, air-outlet valve, 14, fastening bolt,
15, base for supporting, 16, connecting cylinder, 17, heat-insulation layer, 18, resistance wire,
19, kettle, 20, the temperature control panel, 21, thermometer, 22, kettle cover,
23, thermometer is placed tube, and 24, air-outlet valve
Embodiment
A kind of autoclave system that be used for high-temperature high-pressure steam oxidation corrosion test extremely shown in Figure 6 as Fig. 1, this autoclave system comprises heating arrangement, attemperating unit, pressure tester, the work still is with the voltage stabilizing still that is used for steady operation still pressure and be connected the work still and the connecting cylinder 16 of voltage stabilizing still, the work still is the autoclave that is positioned at the left side, the voltage stabilizing still is the autoclave that is positioned at the right side, the work still has kettle 3, still chamber and kettle cover 7, kettle 3 is connected with kettle cover 7, the voltage stabilizing still is identical with work still structure, also has kettle 19, still chamber and kettle cover 22, different is that the work kettle is long-pending bigger, the voltage stabilizing kettle is long-pending less, connecting cylinder 16 is provided with the interface channel of perforation along the cylindrical shell length direction, also be provided with the gas valve 10 of the flow that is used for the control linkage passage on the cylindrical shell of connecting cylinder 16, one end of interface channel is communicated with the still chamber of work still, the other end is communicated with the still chamber of voltage stabilizing still, the kettle of work still and voltage stabilizing still laterally offers and is connected the duct, connect being communicated with of interface channel that still chamber and connecting cylinder 16 are realized in duct by this, the kettle cover 7 of work still and voltage stabilizing still, be equipped with air-outlet valve 13 on 22,24, the kettle cover 22 of voltage stabilizing still is provided with Water filling valve 12, Water filling valve 12 is the bolt that stretches in the voltage stabilizing still, can bear High Temperature High Pressure.
The kettle of work still and voltage stabilizing still all has vertical fastening bolt 14, offers the perforation of passing for fastening bolt 14 on the kettle cover, and it is fixing to be spirally connected by clamp nut 8 after fastening bolt 14 passes and bores a hole, thereby kettle and kettle cover are fastenedly connected.
The oral area in still chamber is the arc structure of shrinkage type in work still and the voltage stabilizing still, makes that the area of vessel port is very little, to reduce leak gas area and gas leakage risk.As shown in Figure 5, the contact site of kettle cover and kettle is arc structure in work still and the voltage stabilizing still, with the work still is example, kettle cover 7 has outstanding contact block 71 downwards, and the outward flange of contact block 71 is the arc surface of evagination, and kettle 3 has the ring gear 31 of circular arc type at opening part, kettle cover 7 is with after kettle 3 is connected, the arc surface of contact block 71 compresses with the ring gear of kettle 31 and contacts, and makes kettle cover closely contact each other with kettle, to improve sealing property.The structure of voltage stabilizing still is identical with the work still.
Connecting cylinder 16 is the stainless steel cylinder, have the screw perpendicular in the middle of the connecting cylinder 16 with interface channel, gas valve 10 is the column type screw rod of round platform for the bottom, can bear High Temperature High Pressure, gas valve 10 is installed in the screw, controls it by screw rod and moves up and down the purpose that reaches the control linkage channel capacity.
Heating arrangement among the present invention is the kettle 3 around work still and voltage stabilizing still, 19 resistance wire 2,18, attemperating unit comprises the temperature control panel 5 of work still and the temperature control panel 20 and the thermometer 21 of thermometer 6 and voltage stabilizing still, the kettle cover 7 of work still and voltage stabilizing still, the thermometer that 22 bottom is equipped with straight down and extend in the still chamber is placed tube 11,23, two thermometers 6,21 respectively correspondence be installed in two thermometers and place tube 11, in 23, the temperature control panel 5 of work still links to each other with resistance wire 2 with the thermometer 6 of work still respectively, the temperature control panel 20 of voltage stabilizing still links to each other with resistance wire 18 with the thermometer 21 of voltage stabilizing still respectively, the temperature control panel shows the temperature value of thermometer and resistance wire respectively, and pressure tester is the tensimeter 9 that links to each other with the still chamber of work still.
The autoclave system also comprises the kettle outer wall of coating work still and voltage stabilizing still and resistance wire 2,18 is coated on interior heat-insulation layer 1,17.
The volume of still of working in the present embodiment is 10L, and the volume of voltage stabilizing still is 5L, and the kettle 3,19 of work still and voltage stabilizing still all adopts heavy wall stainless steel cylinder, and thickness is for can the satisfied temperature temperature being that 700 ℃, pressure are the High Temperature High Pressure requirement of 35MPa.Resistance wire 2,18 is used to heat heavy wall stainless steel kettle, make its internal temperature can reach required value, therefore, resistance wire 2 temperature of setting will be a little more than the temperature of needs, the temperature of resistance wire 2 is by 5 controls of temperature control panel, temperature control panel 5 is gone back the temperature that displays temperature meter 6 is placed tube 11 by the thermometer that is deep in the still kettle of working in the autoclave system, and its temperature promptly is the temperature in the work still still.Kettle cover and kettle keep relative fixed, sealing by king-bolt 8 in the autoclave system.Pressure in the work still still is read by tensimeter 9.When work still pressure is lower than setting, can make the water (water vapour) in the voltage stabilizing still inject the work still by gas valve 10, improve the pressure in the work still thus, during use, slowly rotate gas valve 10 handles, drive and manage interior bottom the right cylinder packoff that is round platform and rise, the water under high pressure in the voltage stabilizing still can pass through in the work still.If water shortage in the voltage stabilizing still can be laid down the pressure of voltage stabilizing still, by Water filling valve 12 water filling in voltage stabilizing still still chamber.After experiment finishes, by air-outlet valve 13 with pressure removal in the autoclave.
During work, at first calculate the amount that in the work still, should add entry, corrosive medium (if having) and sample are put into the work still in the lump by temperature, the pressure gauge of needs.Clamp nut 8, tighten valve, the autoclave sealing and fixing is good.The temperature of resistance wire 2 on the design temperature control panel 5, the energized heating.When the work temperature in the kettle reads pressure in the work still by tensimeter 9 when reaching desired value,, can be pressed into water by steam discharge decompression and voltage stabilizing still and pressurize and reach the force value of needs if when pressure does not conform to desired value.When temperature and pressure all met the demands, corrosion experiment can pick up counting.In the experimentation, if finding pressure descends, then heat the voltage stabilizing still, make its pressure be slightly larger than the work still, at this moment, slowly open gas valve 10, the water (water vapour) in the voltage stabilizing still is flowed in the work still, be the pressure rising in the scalable work still thus, reach the purpose of pressure in the steady operation still.If water shortage in the voltage stabilizing still needs by air-outlet valve 13 pressure in the voltage stabilizing still to be removed this moment, open Water filling valve 12 water filling in the voltage stabilizing still then.After experiment finishes, open the air-outlet valve 13 of work still and voltage stabilizing still, pressure is removed, treat after its cooling the sample taking-up to be got final product.
The above embodiment of the present invention is not the qualification to protection domain of the present invention; embodiments of the present invention are not limited thereto; according to foregoing of the present invention; ordinary skill knowledge and customary means according to this area; do not breaking away under the basic fundamental thought prerequisite of the present invention; modification, replacement or the change of other various ways that said structure of the present invention is made all drop within protection scope of the present invention.
Claims (3)
1. one kind is used for the autoclave system that high-temperature high-pressure steam oxidation corrosion is tested, this autoclave system comprises heating arrangement, attemperating unit, pressure tester and work still, described work still has kettle, still chamber and kettle cover, kettle is connected with kettle cover, it is characterized in that: this autoclave system also comprises voltage stabilizing still that is used for steady operation still pressure and the connecting cylinder that connects described work still and voltage stabilizing still, described voltage stabilizing still is identical with work still structure, also has kettle, still chamber and kettle cover, described connecting cylinder is provided with the interface channel of perforation along the cylindrical shell length direction, also be provided with the gas valve of the flow that is used to control described interface channel on the cylindrical shell of described connecting cylinder, one end of described interface channel is communicated with the still chamber of work still, the other end is communicated with the still chamber of voltage stabilizing still, be equipped with air-outlet valve on the kettle cover of described work still and voltage stabilizing still, the kettle cover of described voltage stabilizing still is provided with Water filling valve; Have and the perpendicular screw of described interface channel in the middle of the described connecting cylinder, described gas valve is that the bottom is the column type screw rod of round platform, can bear High Temperature High Pressure, described gas valve is installed in the described screw, controls it by screw rod and moves up and down the purpose that reaches the described interface channel flow of control.
2. the autoclave system that is used for high-temperature high-pressure steam oxidation corrosion test according to claim 1, it is characterized in that: the oral area in still chamber is the arc structure of shrinkage type in described work still and the voltage stabilizing still, to reduce leak gas area and gas leakage risk.
3. the autoclave system that is used for high-temperature high-pressure steam oxidation corrosion test according to claim 1, it is characterized in that: the contact site of kettle cover and kettle is arc structure in described work still and the voltage stabilizing still, described kettle cover has outstanding contact block downwards, the outward flange of described contact block is the arc surface of evagination, described kettle has the ring gear of circular arc type at opening part, described kettle cover is with after kettle is connected, the arc surface of described contact block compresses with the ring gear of described kettle and contacts, make kettle cover closely contact each other, to improve sealing property with kettle.
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| CN 201110226643 CN102426150B (en) | 2011-08-09 | 2011-08-09 | Autoclave system used for high-temperature high-pressure steam oxidation corrosion test |
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| CN 201110226643 CN102426150B (en) | 2011-08-09 | 2011-08-09 | Autoclave system used for high-temperature high-pressure steam oxidation corrosion test |
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| CN102426150B true CN102426150B (en) | 2013-07-31 |
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| CN103712904A (en) * | 2013-12-25 | 2014-04-09 | 中国石油大学(华东) | Gas supplementation device for ultrahigh-pressure experimental process |
| CN103776756B (en) * | 2014-01-25 | 2016-01-20 | 西安交通大学 | A kind of Flow Corrosion proving installation of High Temperature High Pressure |
| CN104034651B (en) * | 2014-06-26 | 2016-04-06 | 苏州热工研究院有限公司 | The Special experimental apparatus of used in nuclear power station cladding materials Evaluation of Corrosion Resistance in high-temperature steam |
| CN106289954B (en) * | 2016-10-11 | 2023-06-16 | 上海凯尔孚应力腐蚀试验设备有限公司 | Water inlet and outlet device of high-temperature experimental kettle |
| CN111693085A (en) * | 2020-06-23 | 2020-09-22 | 中国核动力研究设计院 | High-temperature high-pressure sensor performance test device and use method thereof |
| CN112221433A (en) * | 2020-08-18 | 2021-01-15 | 华电电力科学研究院有限公司 | Double-kettle test device and method suitable for high-temperature and high-pressure water environment or steam environment |
| CN115121039A (en) * | 2021-03-24 | 2022-09-30 | 安徽阜阳技师学院 | Hierarchical car water treatment purifier |
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| JP3366820B2 (en) * | 1997-02-19 | 2003-01-14 | 株式会社日立製作所 | Oxidation treatment method and apparatus and reaction vessel |
| CN2601733Y (en) * | 2003-03-21 | 2004-02-04 | 天津泰普药品科技发展有限公司 | Autoclave with sleeve |
| ES2574005T3 (en) * | 2003-11-20 | 2016-06-14 | Nalco Company | Method to inhibit corrosion in hot water systems |
| CN202204757U (en) * | 2011-08-09 | 2012-04-25 | 广东电网公司电力科学研究院 | High-pressure kettle system used for high-temperature high-pressure steam oxidization corrosion test |
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