CN210322336U - Device for verifying self-blocking behavior of sodium and carbon dioxide reactant - Google Patents
Device for verifying self-blocking behavior of sodium and carbon dioxide reactant Download PDFInfo
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- CN210322336U CN210322336U CN201921545684.8U CN201921545684U CN210322336U CN 210322336 U CN210322336 U CN 210322336U CN 201921545684 U CN201921545684 U CN 201921545684U CN 210322336 U CN210322336 U CN 210322336U
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Abstract
The utility model discloses a device for verifying sodium and carbon dioxide reactant is from stifled action, it is including outer barrel, go up the flange, admit air the takeover, give vent to anger and take over, anti-overflow air cavity, anti-overflow shirt rim and reaction sleeve, through utilizing the utility model discloses whether the device produces "from stifled" to sodium-carbon dioxide reaction product in printed circuit plate heat exchanger and tests, and the result that obtains will be arranged in printed circuit plate heat exchanger's design experimental, provides the foundation for printed circuit plate heat exchanger's sodium side pipe diameter's selection to reduce printed circuit plate heat exchanger's research and development cost, promoted printed circuit plate heat exchanger's using value simultaneously.
Description
Technical Field
The utility model relates to a heat exchanger technical field in the sodium-cooled fast reactor, concretely relates to a device for verifying sodium and carbon dioxide reactant from stifled action.
Background
In the sodium-cooled fast reactor based on the supercritical carbon dioxide mine circulation system, the printed circuit plate heat exchanger is the main heat exchanger type. The supercritical carbon dioxide side of the printed circuit board type heat exchanger has the operating pressure of about 20MPa, the operating temperature of about 530 ℃, the sodium side has the operating pressure of about 0.1MPa and the operating temperature of 550 ℃, so that when the printed circuit board type heat exchanger operates, if micro leakage occurs, high-pressure carbon dioxide tends to migrate into sodium and further reacts with the sodium. Sodium reacts violently with carbon dioxide at high temperature (above 460 ℃), but the reactants are sodium carbonate, carbon and other particulate matter insoluble in sodium, so that the sodium-supercritical carbon dioxide reaction product has the possibility of generating self-blocking behavior in the printed circuit board heat exchanger.
Therefore, whether the sodium-carbon dioxide reaction product generates self-blocking in the printed circuit plate heat exchanger is verified, and the method has important significance for the design of the printed circuit plate heat exchanger and the design of the sodium-cooled fast reactor adopting the supercritical carbon dioxide Brayton cycle system.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a device for verifying sodium and carbon dioxide reactant from stifled action, it can be tested whether produce "from stifled" to sodium-carbon dioxide reaction product in printed circuit plate heat exchanger to the device, provides the foundation for printed circuit plate heat exchanger's design (such as the selection of sodium side pipe diameter etc.).
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a device for verifying sodium and carbon dioxide reactant is from stifled action, the device is including outer barrel, upper flange, admit air the takeover, the takeover of giving vent to anger, anti-overflow air cavity, anti-overflow shirt rim, reaction sleeve, wherein the upper flange is sealed fixed mounting be in on the outer barrel top face, admit air the takeover with give vent to anger the takeover respectively with outer barrel inner chamber intercommunication, reaction sleeve sets up in the outer barrel inner chamber, reaction sleeve's inner tube passes through the anti-overflow air cavity with admit air the takeover bottom and connect, the anti-overflow shirt rim sets up on the edge all around of outer tube top in the reaction sleeve.
Furthermore, the device also comprises a support rod, wherein the anti-overflow skirt is fixedly arranged on the peripheral edge of the top end of the outer sleeve in the reaction sleeve through the support rod.
Furthermore, the device also comprises a temperature thermocouple, wherein the temperature thermocouple is arranged in a thermocouple well of the outer cylinder body.
Further, the temperature thermocouple is arranged at the bottom end of the reaction sleeve.
Furthermore, one end of the supporting rod is fixedly connected to the outer end face of the bottom end of the anti-overflow air cavity, and the other end of the supporting rod is connected with the inner end face of the upper end of the anti-overflow skirt edge.
Further, the diameter of the inner pipe of the reaction sleeve is the same as the width of the annular space between the inner pipe and the outer sleeve.
Compared with the prior art, the scheme has the beneficial technical effects that: can utilize the utility model discloses whether the device produces "from stifled" to sodium-carbon dioxide reaction product in printed circuit plate heat exchanger and tests, and the result that obtains is experimental will be arranged in printed circuit plate heat exchanger's design, provides the basis for the selection of printed circuit plate heat exchanger's sodium side pipe diameter to reduce printed circuit plate heat exchanger's research and development cost, promoted printed circuit plate heat exchanger's using value simultaneously.
Drawings
Fig. 1 is a schematic diagram of the principle structure of a device for verifying the self-plugging behavior of the reaction product of sodium and carbon dioxide in the test of the present invention.
In the figure:
1-upper flange, 2-air inlet connecting pipe, 3-air outlet connecting pipe, 4-anti-overflow air cavity, 5-support rod, 6-anti-overflow skirt edge, 7-reaction sleeve, 8-outer cylinder body and 9-temperature thermocouple.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the following detailed description.
The scheme aims at the problem that sodium and carbon dioxide can generate violent reaction at high temperature (above 460 ℃), but reactants of the reaction are sodium carbonate, carbon and other particles insoluble in sodium, and the possibility that a sodium-supercritical carbon dioxide reaction product generates self-blocking behavior in a printed circuit board type heat exchanger exists, so that the device for verifying and testing the self-blocking behavior of the sodium and carbon dioxide reaction product is provided, and the device can test whether the sodium-carbon dioxide reaction product generates self-blocking in the printed circuit board type heat exchanger or not, and provides a basis for selecting the diameter of the sodium side of the printed circuit board type heat exchanger.
Referring to fig. 1, the apparatus for verifying the self-plugging behavior of the reaction product of sodium and carbon dioxide in the present embodiment comprises an outer cylinder 8 made of stainless steel, a support rod 5, an upper flange 1, an air inlet connection pipe 2, an air outlet connection pipe 3, an anti-overflow air cavity 4, an anti-overflow skirt 6, a reaction sleeve 7 and a temperature thermocouple 9, wherein the upper flange 1 is fixedly and hermetically mounted on the top end face of the outer cylinder 8, the air inlet connection pipe 2 and the air outlet connection pipe 3 are respectively and vertically arranged in the inner cavity of the outer cylinder 8, the reaction sleeve 7 is vertically arranged in the inner cavity of the outer cylinder 8 and connected to the bottom end of the air inlet connection pipe 2 through the anti-overflow air cavity 4, the anti-overflow skirt 6 is arranged on the peripheral edge of the top end of the outer sleeve in the reaction sleeve 7, the temperature thermocouple 9 is arranged in the inner cavity of the outer cylinder 8, the air inlet connection pipe 2 is communicated with the inner tube of the reaction sleeve, that is, the upper end of the support rod 5 is fixedly connected to the outer end face of the bottom end of the anti-overflow air cavity 4, and the bottom end thereof is connected to the inner end face of the upper end of the anti-overflow skirt 6. The outer cylinder body 8 is used for protecting sodium from being polluted by air in the transferring and reacting processes, and the upper flange 1 is used for sealing the upper end face of the outer cylinder body 8; the gas inlet connecting pipe 2 is used for supplying inert gas and carbon dioxide reacting with sodium to the reaction sleeve 7, and after the sodium reacts with the carbon dioxide, the gas inlet connecting pipe can also be used for supplying high-pressure gas to the inner cavity of the outer cylinder 8 so as to test the pressure resistance of a reaction product; the air outlet connecting pipe 3 is used for vacuumizing, air inlet and exhaust and other functions in the experimental process; the anti-overflow air cavity 4 is used for preventing sodium from entering the air inlet connecting pipe 2; the support rod 5 is used for supporting the anti-overflow skirt edge 6 and ensuring the annular gap width of the reaction sleeve 7; the anti-overflow skirt edge 6 is used for preventing sodium from flowing into the inner cavity of the outer barrel 8; the reaction sleeve 7 is used for providing a reaction area for the reaction of sodium and carbon dioxide; the temperature thermocouple 9 is used to measure the temperature of the reaction well 7. It should be noted that, the anti-overflow air cavity and the air inlet pipe in this embodiment form a thin tubular structure, after the test is started, the reaction product is deposited in the thin tube and the annular space, and the high-pressure gas (with a pressure of 10MPa or more) input from the air inlet pipe pushes the reaction product, during the pushing process, because the inner cavity of the outer cylinder has a large volume and the air outlet pipe is communicated with the external atmosphere, the pressure born by the outer cylinder is small in practice, and therefore the designed compression value of the outer cylinder can be relatively small (0.1MPa is enough), and the whole device can greatly reduce the mass of the test container.
When in test, the air inlet connecting pipe 2 and the air outlet connecting pipe 3 of the device are connected with the upper valve and then placed in the inert gas glove box; filling 10g of sodium metal into an annular space of a reaction sleeve 7 along an anti-overflow skirt edge 6 in an inert gas glove box by using a dropper as much as possible, then moving the assembled device out of the glove box, and connecting the assembled device to a laboratory bench which can be vacuumized, inflated and heated; at normal temperature, the inside and the outside of the device are pumped into vacuum state (below 10 Mpa) from the air inlet connecting pipe 2 and the air outlet connecting pipe 3; thereafter the apparatus was heated to 150 ℃ to allow sodium to flow into the inner tube and annulus of the reaction cannula 7 (the internal and external sodium pressures were in equilibrium); cooling the device to room temperature to keep the sodium in a solid state; the carbon dioxide gas with 0.5Mpa is flushed into the device from the gas inlet connecting pipe 2 and the gas outlet connecting pipe 3, in order to ensure that the liquid sodium cannot be extruded out due to the pressure difference between the two sides of the liquid sodium when the carbon dioxide reacts with the sodium, the carbon dioxide with the same pressure is filled into the device from the inlet pipe and the gas outlet pipe together, and the inlet pipe and the gas outlet pipe are always in a communicated state in the reaction process of the carbon dioxide and the sodium; heating the device to 550 ℃ again to ensure that the sodium and the carbon dioxide fully react for 10 min; stopping heating after the reaction time is up, cooling to room temperature, cooling the device to room temperature, moving the device into a glove box, checking the reaction condition in an inert gas glove box, and confirming the reaction condition of sodium and carbon dioxide; the device is installed again, high-pressure argon is connected to the air inlet connecting pipe 2, and meanwhile the air outlet connecting pipe 3 is connected to the atmosphere; the apparatus was heated to 550 ℃ and then argon was added to the buffer tank and the pressure was increased stepwise (starting at 0.1 MPa). After the pressure is raised each time, an argon gas leak detector is used for monitoring whether argon gas is leaked out from the gas outlet connecting pipe 3, if the argon gas is leaked out, the sodium and carbon dioxide reaction device can not bear the pressure, namely, the self-blocking can not be maintained under the pressure.
To sum up, through utilizing the utility model discloses whether the device produces "from stifled" to sodium-carbon dioxide reaction product and tests in printed circuit plate heat exchanger, and the result that obtains is experimental will be arranged in printed circuit plate heat exchanger's design, provides the foundation for the selection of printed circuit plate heat exchanger's sodium side pipe diameter to reduce printed circuit plate heat exchanger's research and development cost, promoted printed circuit plate heat exchanger's using value simultaneously.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalent technologies, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A device for verifying the self-plugging behavior of a sodium and carbon dioxide reactant, characterized by: the device comprises an outer barrel, an upper flange, an air inlet connecting pipe, an air outlet connecting pipe, an anti-overflow air cavity, an anti-overflow skirt edge and a reaction sleeve, wherein the upper flange is fixedly installed on the top end face of the outer barrel in a sealing mode, the air inlet connecting pipe and the air outlet connecting pipe are respectively communicated with the inner cavity of the outer barrel, the reaction sleeve is arranged in the inner cavity of the outer barrel, an inner pipe of the reaction sleeve is connected with the bottom end of the air inlet connecting pipe through the anti-overflow air cavity, and the anti-overflow skirt edge is arranged on the peripheral edge of the top end of the outer sleeve.
2. The apparatus for verifying the self-plugging behavior of a sodium and carbon dioxide reactant as defined in claim 1, wherein: the device also comprises a support rod, and the anti-overflow skirt edge is fixedly arranged on the peripheral edge of the top end of the outer sleeve in the reaction sleeve through the support rod.
3. The device for verifying the self-plugging behavior of a sodium and carbon dioxide reactant according to claim 1 or 2, characterized in that: the device also comprises a temperature thermocouple, and the temperature thermocouple is arranged in the thermocouple well of the outer cylinder body.
4. The apparatus for verifying sodium and carbon dioxide reactant self-plugging behavior of claim 3, wherein: the temperature thermocouple is arranged at the bottom end of the reaction sleeve.
5. The apparatus for verifying sodium and carbon dioxide reactant self-plugging behavior of claim 2, wherein: one end of the supporting rod is fixedly connected to the outer end face of the bottom end of the anti-overflow air cavity, and the other end of the supporting rod is connected with the inner end face of the upper end of the anti-overflow skirt edge.
6. The apparatus for verifying the self-plugging behavior of a sodium and carbon dioxide reactant as defined in claim 1, wherein: the diameter of the inner tube of the reaction sleeve is the same as the width of the annular space between the inner tube and the outer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921545684.8U CN210322336U (en) | 2019-09-18 | 2019-09-18 | Device for verifying self-blocking behavior of sodium and carbon dioxide reactant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921545684.8U CN210322336U (en) | 2019-09-18 | 2019-09-18 | Device for verifying self-blocking behavior of sodium and carbon dioxide reactant |
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| Publication Number | Publication Date |
|---|---|
| CN210322336U true CN210322336U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921545684.8U Active CN210322336U (en) | 2019-09-18 | 2019-09-18 | Device for verifying self-blocking behavior of sodium and carbon dioxide reactant |
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| Country | Link |
|---|---|
| CN (1) | CN210322336U (en) |
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2019
- 2019-09-18 CN CN201921545684.8U patent/CN210322336U/en active Active
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