Sodium valve heating device
By using an extension sleeve to connect the thermocouple and the electric heater in the sodium valve heating device, the problem of cumbersome thermocouple disassembly is solved, achieving a quick, simple, and secure connection of the thermocouple, reducing the risk of sodium solidification and maintenance workload.
Patent Information
- Application Number
- CN202422370156.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The thermocouple disassembly process in existing sodium valve heating devices is cumbersome, which causes sodium inside the valve to solidify, and removing the insulation layer is risky and labor-intensive.
A sodium valve heating device was designed, which uses an extension sleeve to connect to an electric heater and a thermocouple. One end of the extension sleeve has an external thread that matches the center thread of the electric heater, and the other end has an internal thread that matches the thermocouple fixing screw, ensuring that the thermocouple is fixed on the outside of the insulation layer and simplifying the disassembly and assembly process.
It enables rapid, simple, and secure connection of thermocouples, avoids the risk of sodium solidification caused by removing the insulation layer, and reduces maintenance workload.
Smart Images
Figure CN223662749U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to sodium valve technical field, concretely relates to a sodium valve heating device. BACKGROUND
[0002] Sodium cooled fast reactor adopts metal sodium as coolant, and the melting point of metal sodium is 97.72 DEG C, in order to make sodium medium in sodium cooled fast reactor sodium valve always be in liquid state, need install electric heater on sodium valve seat to heat, and install heat preservation layer outside electric heater.In prior art, electric heater carries out temperature measurement and control through thermocouple, and this thermocouple is fixed on electric heater through screw.When thermocouple fails, heat preservation layer must be removed first, and it is very cumbersome to remove, and removing heat preservation layer increases overhaul workload, and there is the risk of scalding personnel after removing heat preservation, and the temperature of valve will drop rapidly, leading to sodium solidification in valve. UTILITARY MODEL CONTENTS
[0003] The utility model provides a sodium valve heating device for solving the problem of cumbersome thermocouple dismounting steps of heating device in prior art, leading to sodium solidification in valve.
[0004] The technical scheme of the utility model comprises the following:
[0005] The utility model provides a sodium valve heating device, and the device comprises an electric heater, a thermocouple and an extension sleeve, the electric heater is installed on the sodium valve, the electric heater is provided with the extension sleeve, the extension sleeve is provided with the thermocouple, and the thermocouple is used to measure the temperature of the electric heater.
[0006] In some embodiments, the thermocouple is provided with a heat preservation layer, and the heat preservation layer is used to maintain the temperature of the device.
[0007] In some embodiments, one end of the extension sleeve is externally threaded, the external thread is matched with the center thread of the electric heater, and the external thread is used to be connected with the center of the electric heater.
[0008] In some embodiments, the inner wall size of the extension sleeve is matched with the thermocouple, the other end of the extension sleeve is internally threaded, the internal thread is matched with the fixing screw of the thermocouple, and the internal thread is used to be connected with the thermocouple.
[0009] In some embodiments, the length of the extension sleeve is longer than that of the heat preservation layer, so as to ensure that the fixing screw of the thermocouple is outside the heat preservation layer.
[0010] The utility model has the advantages of:
[0011] 1、 the utility model provides a sodium valve heating device, which adds an extension sleeve on the thermocouple of the sodium valve, and solves the problem that the heat preservation layer must be removed first when dismounting the thermocouple.
[0012] 2. The utility model provides a sodium valve heating device, one end of the extension sleeve of the device is external thread, one end is internal thread, and the extension sleeve is simple, fast and firm to connect with the thermocouple and electric heater.
[0013] 3. The utility model provides a sodium valve heating device, the extension sleeve of the device is slightly longer than the thickness of the heat preservation layer, ensures that the thermocouple fixing screw is outside the heat preservation layer, and facilitates screw dismounting. DRAWINGS
[0014] Fig. 1 It is a schematic view of a sodium valve heating device designed by the utility model;
[0015] Fig. 2 It is an extension sleeve schematic view of a sodium valve heating device of the utility model; DRAWINGS
[0017] 1, heat preservation layer; 2, electric heater; 3, sodium valve; 4, extension sleeve; 5, thermocouple. CONCRETE IMPLEMENTATIONS
[0018] The utility model will be explained in detail in combination with the drawings and examples.
[0019] As Figs. 1-2 shown, the utility model provides a sodium valve heating device, which comprises an electric heater 2, a thermocouple 5 and an extension sleeve 4, the electric heater 2 is installed on the sodium valve 3, the electric heater 2 is provided with the extension sleeve 4, the extension sleeve 4 is provided with the thermocouple 5, and the thermocouple 5 is used to measure the temperature of the electric heater 2. The thermocouple 5 is provided with a heat preservation layer 1, and the heat preservation layer 1 is used to keep the temperature of the device.
[0020] One end of the extension sleeve 4 is external thread, the other end of the extension sleeve 4 is internal thread, the external thread of the extension sleeve 4 is matched with the center thread of the electric heater 2, and the external thread is used to be connected with the center of the electric heater 2; the internal thread is matched with the fixing screw of the thermocouple 5, and the internal thread is used to be connected with the thermocouple 5.
[0021] In some examples, the length of the extension sleeve 4 is longer than the heat preservation layer 1, the fixing screw of the thermocouple 5 is outside the heat preservation layer 1, and the thermocouple 5 is convenient to dismount.
[0022] The utility model provides a sodium valve heating device, the length of the extension sleeve 4 needs to be determined according to the heat preservation thickness before use, the center size of the extension sleeve 4 is matched with the thermocouple 5, the thermocouple 5 can be normally inserted, one end of the extension sleeve 4 is external thread, the external thread is matched with the center thread of the electric heater 2; the other end of the extension sleeve 4 is internal thread, and the internal thread is matched with the fixing screw of the thermocouple 5.
[0023] When the device is used, the extension sleeve 4 is screwed into the center threaded hole of the electric heater 2 first; then the heat preservation layer 1 is installed outside the electric heater 2; finally the thermocouple 5 is inserted into the sleeve, and the fixing screw of the thermocouple 5 is screwed tightly with the internal thread of the sleeve.
[0024] The above has made detailed description to the embodiment of the utility model, the utility model is not limited to the above examples, still can make various changes in the knowledge range possessed by the ordinary skill in the art without departing from the utility model purpose.
Claims
1. A sodium valve heating device, characterized by, The device comprises an electric heater, a thermocouple and an extension sleeve, the electric heater is installed on a sodium valve, the electric heater is provided with the extension sleeve, the extension sleeve is provided with the thermocouple, and the thermocouple is used for measuring the temperature of the electric heater.
2. A sodium valve heating device according to claim 1, wherein The thermocouple is externally provided with a heat preservation layer for keeping the temperature of the device.
3. A sodium valve heating device according to claim 2, wherein One end of the extension sleeve is externally threaded, the externally threaded center is matched with the electric heater, and the externally threaded center is used for connecting with the electric heater.
4. A sodium valve heating device according to claim 3, wherein The inner wall size of the extension sleeve is matched with the thermocouple, the other end of the externally threaded extension sleeve is internally threaded, the internally threaded center is matched with the thermocouple fixing screw, and the internally threaded center is used for connecting with the thermocouple.
5. A sodium valve heating device according to claim 4, wherein The length of the extension sleeve is longer than that of the heat preservation layer, so that the thermocouple fixing screw is outside the heat preservation layer.