Argon heating and control system and method for sodium-cooled fast reactor assembly

Abstract

The invention belongs to the technical field of sodium-cooled fast reactor loading and reloading, and particularly relates to an argon heating and control system and method for a sodium-cooled fast reactor assembly. Comprising heaters and draught fans, each heater is connected with one draught fan through a pipeline, the two heaters are connected in parallel through a pipeline and connected with exhaust valves connected in series, the two heaters connected in parallel are further connected with a control cabinet through a pipeline, one draught fan connected with the heater is further connected with the two draught fans connected in series through a pipeline, and a valve is arranged on the pipeline. The serially connected fans are connected with serially connected air inlet valves through pipelines provided with valves, and the air inlet valves are connected with a control cabinet through pipelines. The system has the beneficial effects that gas is heated through the heater, then gas flowing is accelerated through the draught fan, and the heated gas is subjected to rapid circulation heat exchange in the container so that the temperature rising function can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of sodium-cooled fast reactor charging and replacement, and in particular relates to an argon heating and control system and method for a sodium-cooled fast reactor component. Background Art

[0002] Before loading new components of a sodium-cooled fast reactor into the core, the components need to be heated to a certain temperature. When a large number of components are continuously loaded into the reactor, the new components of the sodium-cooled fast reactor are heated in a temporary heating container and then loaded into the new component conversion barrel. The new component conversion barrel does not need to be cooled before loading the components, which can effectively save the time of repeatedly cooling and heating the new component conversion barrel again. Summary of the invention

[0003] The object of the present invention is to provide an argon heating and control system and method for a sodium-cooled fast reactor component, which is used to achieve rapid heating and cooling of the components in a heating container.

[0004] The technical scheme of the present invention is as follows: an argon heating and control system for a sodium-cooled fast reactor assembly, comprising an argon regulating valve, an argon inlet, a plurality of valves, an intake valve, an exhaust valve, a sensor, a heater, a fan and a control cabinet, wherein there are two heaters and four fans, each heater is connected to a fan through a pipeline, two heaters are connected in parallel to the exhaust valves connected in series through pipelines, the two parallel heaters are also connected to the control cabinet through pipelines, one of the fans connected to the heaters is also connected to the two fans connected in series through pipelines, an eighth valve is provided on the pipeline, the fans connected in series are connected to the intake valves connected in series through a pipeline provided with a fifth valve, the intake valve I is connected to the control cabinet through a pipeline provided with a fourth valve, a second valve and a sixth valve, a pipeline provided with an argon inlet, an argon regulating valve and a seventh valve is connected to the fans connected in series, and the first valve and the third valve are respectively connected to the fans connected in series through pipelines.

[0005] The exhaust valves connected in series include exhaust valve I, exhaust valve II, exhaust valve III and exhaust valve IV which are connected in sequence.

[0006] The series-connected intake valves include an intake valve IV, an intake valve III, an intake valve II and an intake valve I which are connected in sequence.

[0007] A sensor is arranged on the pipeline between the heater and the exhaust valve.

[0008] A method for heating and controlling argon gas in a sodium-cooled fast reactor assembly comprises the following steps:

[0009] Step 1: Fill the system with argon;

[0010] Step 2: System heating;

[0011] Step 3: Cool down the system.

[0012] The step 1 comprises:

[0013] Step 11: Connect an argon gas source to the argon gas inlet;

[0014] Step 12: Connect the exhaust valve to the air inlet of the temporary heating container and open the valve;

[0015] Step 13: Connect the air inlet valve to the air outlet of the temporary heating container and open the valve;

[0016] Step 14: Close the fifth valve;

[0017] Step 15: Open the seventh valve to let in argon gas;

[0018] Step 16: Place the argon concentration analyzer at the argon concentration detection port, open the third valve of the monitoring port, and monitor the argon concentration at the outlet;

[0019] Step 17: When the argon concentration meets the actual requirements, close the third valve of the monitoring port, continue to fill in argon to the required pressure value, and the argon filling is completed.

[0020] The step 2 comprises:

[0021] Step 21: Open the fifth valve;

[0022] Step 22: Turn on the fan and heater in sequence through the control cabinet, and set the heating temperature, heater outlet temperature, system pressure and other values;

[0023] Step 23: Perform cyclic heating, and the control cabinet will display the heating temperature, heater outlet temperature, system pressure and other values ​​in real time;

[0024] Step 24: When the pressure inside the container rises to a value exceeding the required value, the third valve automatically opens to release the pressure; when the pressure is lower than the required value, the second valve automatically opens to inject argon gas to increase the pressure;

[0025] Step 25: When the internal temperature of the container reaches the set value, stop heating.

[0026] The step 3 comprises:

[0027] Step 31: Turn off the heater through the control cabinet;

[0028] Step 32: close the fifth valve, open the first valve, the third valve, and the eighth valve to continuously introduce room temperature air to cool the system;

[0029] Step 33: Monitor the data in real time through the control cabinet. When the temperature drops to normal temperature, turn off the fan and the cooling is completed.

[0030] The exhaust valve in step 12 includes exhaust valve I, exhaust valve II, exhaust valve III and exhaust valve IV which are connected in series in sequence.

[0031] The intake valve in step 13 includes an intake valve IV, an intake valve III, an intake valve II and an intake valve I which are connected in series in sequence.

[0032] The beneficial effects of the present invention are as follows: the system heats the gas through a heater, and then the fan accelerates the gas flow, and the heated gas is quickly circulated in the container for heat exchange to achieve the function of heating. When cooling, turn off the heater, let in air at normal temperature, and use the fan to continuously blow air into the container to exhaust the hot air to achieve the function of cooling. During the heating process, when the pressure inside the container rises to exceed the required value, the pressure relief valve automatically opens to relieve the pressure; when the pressure is lower than the required value, the air inlet valve opens to continuously rush in argon gas to increase the pressure. Keep the temperature in the heating container within the range of 180°C to 200°C and the pressure within the range of 5kpa to 6kpa BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of an argon heating and control system for a sodium-cooled fast reactor assembly provided by the present invention.

[0034] In the figure: 1 argon regulating valve, 2 argon inlet, 3 first valve, 4 second valve, 5 third valve, 6 intake valve I, 7 intake valve II, 8 intake valve III, 9 intake valve IV, 10 sensor, 11 exhaust valve I, 12 exhaust valve II, 13 exhaust valve III, 14 exhaust valve IV, 15 fourth valve, 16 heater, 17 fan, 18 control cabinet, 19 fifth valve, 20 sixth valve, 21 seventh valve, 22 eighth valve. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1As shown, an argon heating and control system for a sodium-cooled fast reactor assembly includes an argon regulating valve 1, an argon inlet 2, a plurality of valves, four inlet valves, four exhaust valves, a sensor 10, a heater 16, a fan 17 and a control cabinet 18, wherein there are two heaters 16, four fans 17, each heater 16 is connected to a fan 17 through a pipeline, two heaters 16 are connected in parallel through pipelines to four exhaust valves in series, namely, exhaust valve I 11, exhaust valve II 12, exhaust valve III 13 and exhaust valve IV 14, a sensor 10 is arranged on the pipeline between the heater 16 and the exhaust valve, and the two parallel heaters 16 are also connected through pipelines. A control cabinet 18 is connected, wherein one of the fans connected to the heater is also connected to two fans connected in series through a pipeline, an eighth valve 22 is provided on the pipeline, and the fans connected in series are connected to four intake valves connected in series, namely (intake valve IV9, intake valve III8, intake valve II7 and intake valve I6) through a pipeline provided with a fifth valve 19, intake valve I6 is connected to the control cabinet 18 through a pipeline provided with a fourth valve 15, a second valve 4 and a sixth valve 20, a pipeline provided with an argon inlet 2, an argon regulating valve 1 and a seventh valve 21 is connected to the fans connected in series, and the first valve 3 and the third valve 5 are respectively connected to the fans connected in series through pipelines.

[0037] A method for heating and controlling argon gas in a sodium-cooled fast reactor assembly comprises the following steps:

[0038] Step 1: Fill the system with argon

[0039] Step 11: Connect an argon gas source to the argon gas inlet 2;

[0040] Step 12: Connect exhaust valves 11 to 14 (exhaust valve I, exhaust valve II, exhaust valve III, exhaust valve IV) to the air inlet of the temporary heating container and open the valves;

[0041] Step 13: Air inlet valves 6 to 9 (air inlet valve I, air inlet valve II, air inlet valve III, air inlet valve IV) are connected to the air outlet of the temporary heating container and the valves are opened;

[0042] Step 14: Close the fifth valve 19;

[0043] Step 15: Open the seventh valve 21 to let in argon gas;

[0044] Step 16: Place the argon concentration analyzer at the argon concentration detection port, open the third valve 5 of the monitoring port, and monitor the argon concentration at the outlet;

[0045] Step 17: When the argon concentration meets the actual requirement, close the third valve 5 of the monitoring port, continue to fill in argon to the required pressure value, and the argon filling is completed.

[0046] Step 2: System heating;

[0047] Step 21: Open the fifth valve 19;

[0048] Step 22: Turn on the fan 17 and the heater 16 in sequence through the control cabinet 18, and set the heating temperature, the heater outlet temperature, the system pressure and other values;

[0049] Step 23: Circulation heating is performed, and the control cabinet 18 displays the heating temperature, heater outlet temperature, system pressure and other values ​​in real time;

[0050] Step 24: When the pressure inside the container rises to a value exceeding the required value, the third valve 5 automatically opens to release the pressure; when the pressure is lower than the required value, the second valve 4 automatically opens to inject argon gas to increase the pressure;

[0051] Step 25: When the internal temperature of the container reaches the set value, stop heating.

[0052] Step 3: Cool down the system

[0053] Step 31: Turn off the heater 16 through the control cabinet 18;

[0054] Step 32: close the fifth valve 19, open the first valve 3, the third valve 5, and the eighth valve 22 to continuously introduce room temperature air to cool the system;

[0055] Step 33: Monitor the data in real time through the control cabinet 18. When the temperature drops to normal temperature, turn off the fan and the cooling is completed.

Claims

1. An argon heating and control system for a sodium-cooled fast reactor assembly, characterized in that: It includes an argon regulating valve, an argon inlet, multiple valves, an intake valve, an exhaust valve, a sensor, a heater, a fan and a control cabinet, wherein there are two heaters and four fans, each of which is connected to a fan through a pipeline, two heaters are connected in parallel to the exhaust valves in series through pipelines, the two parallel heaters are also connected to the control cabinet through pipelines, one of the fans connected to the heaters is also connected to the two fans in series through pipelines, an eighth valve is arranged on the pipeline, the fans in series are connected to the intake valves in series through a pipeline with a fifth valve, intake valve I is connected to the control cabinet through a pipeline with a fourth valve, a second valve and a sixth valve, a pipeline with an argon inlet, an argon regulating valve and a seventh valve is connected to the fans in series, and the first valve and the third valve are respectively connected to the fans in series through pipelines.

2. The argon heating and control system for a sodium-cooled fast reactor assembly according to claim 1, characterized in that: The exhaust valves connected in series include exhaust valve I, exhaust valve II, exhaust valve III and exhaust valve IV which are connected in sequence.

3. The argon heating and control system for a sodium-cooled fast reactor assembly according to claim 1, characterized in that: The series-connected intake valves include an intake valve IV, an intake valve III, an intake valve II and an intake valve I which are connected in sequence.

4. The argon heating and control system for a sodium-cooled fast reactor assembly according to claim 1, characterized in that: A sensor is arranged on the pipeline between the heater and the exhaust valve.

5. A method for heating and controlling argon gas in a sodium-cooled fast reactor assembly, characterized in that: The steps include: Step 1: Fill the system with argon; Step 2: System heating; Step 3: Cool down the system.

6. A method for heating and controlling argon gas in a sodium-cooled fast reactor assembly as claimed in claim 5, characterized in that: The step 1 comprises: Step 11: Connect an argon gas source to the argon gas inlet; Step 12: Connect the exhaust valve to the air inlet of the temporary heating container and open the valve; Step 13: Connect the air inlet valve to the air outlet of the temporary heating container and open the valve; Step 14: Close the fifth valve; Step 15: Open the seventh valve to let in argon gas; Step 16: Place the argon concentration analyzer at the argon concentration detection port, open the third valve of the monitoring port, and monitor the argon concentration at the outlet; Step 17: When the argon concentration meets the actual requirements, close the third valve of the monitoring port, continue to fill in argon to the required pressure value, and the argon filling is completed.

7. The method for heating and controlling argon gas of a sodium-cooled fast reactor assembly according to claim 5, characterized in that: The step 2 comprises: Step 21: Open the fifth valve; Step 22: Turn on the fan and heater in sequence through the control cabinet, and set the heating temperature, heater outlet temperature, system pressure and other values; Step 23: Perform cyclic heating, and the control cabinet will display the heating temperature, heater outlet temperature, system pressure and other values ​​in real time; Step 24: When the pressure inside the container rises to a value exceeding the required value, the third valve automatically opens to release the pressure; when the pressure is lower than the required value, the second valve automatically opens to inject argon gas to increase the pressure; Step 25: When the internal temperature of the container reaches the set value, stop heating.

8. The method for heating and controlling argon gas of a sodium-cooled fast reactor assembly according to claim 5, characterized in that: The step 3 comprises: Step 31: Turn off the heater through the control cabinet; Step 32: close the fifth valve, open the first valve, the third valve, and the eighth valve to continuously introduce room temperature air to cool the system; Step 33: Monitor the data in real time through the control cabinet. When the temperature drops to normal temperature, turn off the fan and the cooling is completed.

9. The method for heating and controlling argon gas of a sodium-cooled fast reactor assembly according to claim 6, characterized in that: The exhaust valve in step 12 includes exhaust valve I, exhaust valve II, exhaust valve III and exhaust valve IV which are connected in series in sequence.

10. The method for heating and controlling argon gas of a sodium-cooled fast reactor assembly according to claim 6, characterized in that: The intake valve in step 13 includes an intake valve IV, an intake valve III, an intake valve II and an intake valve I which are connected in series in sequence.

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