CN213658114U - High-stability quick-response platinum thermal resistance thermometer for nuclear power station - Google Patents
High-stability quick-response platinum thermal resistance thermometer for nuclear power station Download PDFInfo
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- CN213658114U CN213658114U CN202022916516.4U CN202022916516U CN213658114U CN 213658114 U CN213658114 U CN 213658114U CN 202022916516 U CN202022916516 U CN 202022916516U CN 213658114 U CN213658114 U CN 213658114U
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Abstract
The utility model relates to the technical field of temperature monitoring equipment, in particular to a high-stability and quick-response platinum thermal resistance thermometer for a nuclear power station, which comprises an armored platinum thermal resistance, a conical protective sleeve, an extension section reinforcing pipe, a loose joint, a right-angle quick connector, a radiating pipe, a connector connecting tail and a signal cable assembly; the armored platinum thermal resistor comprises an armored protection tube; the flexible lead is arranged in the armored protection tube in a penetrating mode, and two ends of the flexible lead are exposed out of the armored protection tube; a platinum resistance element connected to one end of the flexible conductor; the conical protective sleeve is sleeved outside the armored protective tube and is provided with a resistor element installation cavity for accommodating the platinum resistor element. The platinum thermal resistance thermometer is high in thermal conductivity, short in response time, high in strength and anti-seismic performance, good in sealing performance, high-temperature resistant, high-pressure resistant and irradiation resistant, capable of rapidly monitoring the temperature of a pipeline and equipment related to a process system, and stable and reliable for a long time.
Description
Technical Field
The utility model relates to a temperature monitoring equipment technical field specifically is a nuclear power station is with platinum resistance thermometer of high stable fast response.
Background
The thermal resistance thermometer of the nuclear power plant not only requires accurate and rapid temperature measurement, but also requires sufficient stability in the long-term use process, and also requires that the thermal resistance thermometer meets the related technical requirements of pressure, flow velocity, flow resistance, temperature measurement response time and the like, so that the thermal resistance thermometer is used for monitoring the temperature of the related pipelines and equipment of the process system under the normal operation working condition and the accident/post-accident working condition, and provides signals for the corresponding secondary instrument.
When the latest third-generation nuclear power station technology is designed, the total precision of the thermal resistance thermometer needs to reach AA level, and higher requirements are provided for annual drift (not more than +/-0.11 ℃) and total drift (not more than +/-0.28 ℃ in 20 years). Under the condition that the service life of a nuclear power station is 60 years, the traditional thermal resistance temperature structure is difficult to ensure that the traditional thermal resistance temperature structure also has long-term stability and reliability under special environmental conditions of the maximum temperature of 372 ℃, the design pressure of 17.2MPa, the maximum flow rate of medium scouring of 23m/s, high radiation dose and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that prior art exists, provided a nuclear power station is with platinum resistance thermometer of high stable quick response, can monitor the temperature of the relevant pipeline of process systems and equipment fast under normal operating condition and accident/accident back operating mode, and long-term reliable and stable.
The utility model provides a technical scheme that its technical problem adopted is: a high-stability quick-response platinum thermal resistance thermometer for a nuclear power station comprises an armored platinum thermal resistance, a conical protective sleeve, an extension section reinforcing pipe, a loose joint, a right-angle quick connector, a radiating pipe, a connector connecting tail and a signal cable assembly, wherein the extension section reinforcing pipe is connected with the loose joint;
the armored platinum thermal resistor comprises
An armored protection tube;
the flexible lead is arranged in the armored protection tube in a penetrating mode, and two ends of the flexible lead are exposed out of the armored protection tube;
a platinum resistance element connected to one end of the flexible conductor;
the conical protective sleeve is sleeved outside the armored protective tube and is provided with a resistor element installation cavity for accommodating the platinum resistor element; a gap between the resistor element installation cavity and the platinum resistor element is filled with insulating powder;
the extension section reinforcing pipe is sleeved with the armor protection pipe, and one axial end of the extension section reinforcing pipe is connected with the axial end of the conical protection sleeve;
the movable joint is sleeved with the end part of the armor protection pipe, and one axial end of the movable joint is connected with the other axial end of the extension section reinforcing pipe;
one port of the right-angle quick connector is connected with the other axial end of the loose joint, an inserting cavity allowing the other end of the flexible conductor to enter is formed in the right-angle quick connector, and a contact pin connected with the flexible conductor is arranged in the inserting cavity;
the radiating pipe is sleeved at the joint of the movable joint and the right-angle quick connector;
the connector connecting tail is connected with the other port of the right-angle quick connector;
the signal cable assembly is attached to the connector connection tail.
This application thermometer is through extending section reinforcement pipe, and loose joint, the cooling tube is connected armor platinum resistance, toper protective case and right angle quick connector fixedly, has effectively improved the structural stability of platinum resistance thermometer, makes its long-term reliable and stable work under special environment, and protective case is the toper setting in addition, and the diameter of upper portion pipeline section is greater than the diameter of lower part pipeline section, can effectively reduce response time.
Preferably, the right-angle quick connector comprises a plug connected with the movable joint and a socket additionally connected with the tail of the connector, and a silicone rubber 0-type sealing ring is arranged at the joint of the plug and the socket.
Preferably, a three-step ladder type structure is arranged outside the conical protective sleeve.
Preferably, the platinum resistance element is arranged in a variable-diameter conical structure.
Preferably, the shape of the resistor element mounting cavity is the same as the shape of the platinum resistor element.
Preferably, one axial end of the extension section reinforcing pipe is provided with a threaded connector, the other axial end of the extension section reinforcing pipe is provided with a conical plug connector, the movable connector is provided with a threaded butt joint groove which is in assembly connection with the threaded connector, and the conical protective sleeve is provided with an insertion groove which is in assembly connection with the conical plug connector.
Preferably, the bottom in the thread butt joint groove is provided with a circle of conical sealing bulges, and the end part of the shaft of the threaded connector is provided with a conical section in contact connection with the outer walls of the conical sealing bulges.
Preferably, the signal cable assembly comprises a low smoke, zero halogen, flame retardant cable.
Preferably, the signal cable assembly further comprises an annular corrugated protection pipe coated outside the low-smoke halogen-free flame-retardant cable.
Preferably, the flexible joint further comprises a pressurizing spring which is arranged in the flexible joint and sleeved with the armored platinum thermal resistor.
Advantageous effects
The platinum thermistor thermometer is high in heat conductivity, short in response time, capable of quickly measuring temperature, high in strength and anti-seismic performance, stable and reliable in structure, good in sealing performance, high-temperature resistant, high-pressure resistant and irradiation resistant, capable of quickly monitoring the temperature of relevant pipelines and equipment of a process system under normal operation working conditions and accident/post-accident working conditions, and stable and reliable for a long time.
Drawings
FIG. 1 is a schematic view of a platinum thermistor thermometer according to the present application.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in figure 1, the high-stability quick-response platinum thermal resistance thermometer for the nuclear power station comprises an armored platinum thermal resistance, a conical protective sleeve 2, an extension reinforcing pipe 5, a loose joint 4, a right-angle quick connector 3, a radiating pipe 6, a connector connecting tail 8 and a signal cable assembly 9.
The armored platinum thermal resistor comprises an armored protection tube 1, a flexible conductor 10 which is arranged in the armored protection tube 1 in a penetrating mode, and two ends of the flexible conductor 10 are exposed out of the armored protection tube 1, and a platinum resistor element 15 which is connected with one end of the flexible conductor 10. The conical protective sleeve 2 is sleeved outside the armored protective tube 1 and is provided with a resistor element installation cavity for accommodating the platinum resistor element 15, a gap between the resistor element installation cavity and the platinum resistor element 15 is filled with insulating powder 16, the insulating powder 16 is MgO or Al2O3 or SiO2 material, and the conical protective sleeve 2 is made of stainless steel nickel plating or gold plating or silver plating.
The extension section reinforcing pipe 5 is sleeved with the armor protection pipe 1, and one axial end of the extension section reinforcing pipe is connected with the axial end of the conical protection sleeve 2. The movable joint 4 is sleeved with the end part of the armor protection pipe 1, and one axial end of the movable joint is connected with the other axial end of the extension section reinforcing pipe 5. One port of the right-angle quick connector 3 is connected with the other axial end of the movable joint 4, an inserting cavity allowing the other end of the flexible conductor 10 to enter is formed in the inserting cavity, and a contact pin connected with the flexible conductor 10 is arranged in the inserting cavity. The radiating pipe 6 is sleeved at the joint of the movable joint 4 and the right-angle quick connector 3 and is welded and fixed with the movable joint 4 and the right-angle quick connector 3. The connector connection tag 8 is connected with the other port of the right-angle quick connector 3. A signal cable assembly 9 is connected to the connector attachment 8.
This application thermometer is through extending section reinforcement pipe 5, loose joint 4, cooling tube 6 is connected armor platinum resistance, toper protective case 2 and right angle quick connector 3 fixedly, has effectively improved platinum resistance thermometer's structural stability, makes its long-term reliable and stable work under special environment, and protective case is the toper setting in addition, and the diameter of upper portion pipeline section is greater than the diameter of lower part pipeline section, can effectively reduce response time.
The right-angle quick connector 3 comprises a plug connected with the loose joint 4 and a socket connected with the connector connecting tail 8, and a silicone rubber 0-type sealing ring 13 with high temperature resistance and irradiation resistance is arranged at the joint of the plug and the socket. The sealing performance of the right-angle quick connector 3 and the adaptability to special environments can be improved through the silicone rubber 0-type sealing ring 13, and therefore the overall reliability of the platinum thermal resistance thermometer is improved.
The outside of toper protective case 2 is equipped with three-step ladder type structure, makes it have higher intensity and anti-seismic performance, further improves the whole reliability of this application platinum resistance thermometer.
The platinum resistance element 15 is in a reducing conical structure, so that the platinum resistance element has a good heat conduction effect, short thermal response time and capability of quickly measuring temperature. The shape of the resistance element installation cavity is the same as that of the platinum resistance element 15, and the resistance element installation cavity is attached to the platinum resistance element 15, so that the gap between the resistance element installation cavity and the platinum resistance element 15 is small, the platinum resistance element 15 is in close contact with the inner wall of the conical protective sleeve 2, the resistance element installation cavity has the characteristics of small heat capacity, high heat conductivity and quick response, the thermal response time tau is 0.632 or less than 3.5s, compression and stretching of the platinum resistance element 15 are reduced to the maximum extent, strain on a platinum wire of the ceramic platinum resistance element at the temperature sensing end position is small, repeatability and stability of the platinum resistance element are better, and the technical requirements of high temperature resistance, high pressure resistance, vibration resistance, irradiation resistance and high speed medium fluid scouring resistance of a nuclear power station in a 60-year service life can be met in the long-term use process of the thermal resistance thermometer.
The extension section reinforcement pipe 5 is equipped with threaded connection head, the axial other end is equipped with the toper bayonet joint to axial one end, loose joint 4 be equipped with threaded connection head assembly connection's screw thread butt joint groove, toper protective case 2 be equipped with toper bayonet joint assembly connection's inserting groove. The structure ensures that the extension section reinforcing pipe 5 is connected with the conical protective sleeve 2 and the extension section reinforcing pipe 5 is connected with the loose joint 4 very stably and reliably, so that the thermometer has good structural strength and shock resistance.
The bottom in the thread butt joint groove is provided with a circle of conical sealing protrusion, the end part of the threaded connection shaft is provided with a conical section connected with the outer wall of the conical sealing protrusion in a contact manner, the structure improves the sealing performance of the extension section reinforcing pipe 5 and the loose joint 4, and the thermometer is more stable and reliable.
The signal cable assembly 9 comprises an irradiation-resistant, high-temperature-resistant and aging-resistant low-smoke halogen-free flame-retardant cable 11 and a 316L stainless steel annular corrugated protection tube 12 coated outside the low-smoke halogen-free flame-retardant cable 11, so that the thermometer can effectively adapt to various special environments.
This application still including locating loose joint 4 inside and with the pressure spring 7 that armor platinum resistance cup jointed has improved loose joint 4 and armor platinum resistance's stability of being connected, has improved the reliability of thermometer once more.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (10)
1. A high-stability quick-response platinum thermal resistance thermometer for a nuclear power station is characterized in that: the high-voltage direct current power supply comprises an armored platinum thermal resistor, a conical protective sleeve (2), an extension reinforcing pipe (5), a movable joint (4), a right-angle quick connector (3), a radiating pipe (6), a connector connecting tail (8) and a signal cable assembly (9);
the armored platinum thermal resistor comprises
An armor protection tube (1);
the flexible conductor (10) penetrates through the armored protection tube (1) and two ends of the flexible conductor are exposed out of the armored protection tube (1);
a platinum resistance element (15) connected to one end of the flexible conductor (10);
the conical protective sleeve (2) is sleeved outside the armored protective tube (1) and is provided with a resistor element installation cavity for accommodating the platinum resistor element (15); a gap between the resistance element mounting cavity and the platinum resistance element (15) is filled with insulating powder (16);
the extension section reinforcing pipe (5) is sleeved with the armor protection pipe (1), and one axial end of the extension section reinforcing pipe is connected with the axial end of the conical protection sleeve (2);
the movable joint (4) is sleeved with the end part of the armor protection pipe (1), and one axial end of the movable joint is connected with the other axial end of the extension section reinforcing pipe (5);
one port of the right-angle quick connector (3) is connected with the other axial end of the movable joint (4), an insertion cavity allowing the other end of the flexible conductor (10) to enter is formed in the right-angle quick connector, and a contact pin connected with the flexible conductor (10) is arranged in the insertion cavity;
the radiating pipe (6) is sleeved at the joint of the movable joint (4) and the right-angle quick connector (3);
the connector connecting tail (8) is connected with the other port of the right-angle quick connector (3);
the signal cable assembly (9) is connected with the connector connecting tail attachment (8).
2. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 1, characterized in that: the right-angle quick connector (3) comprises a plug connected with the loose joint (4) and a socket connected with the connector connecting tail (8), and a silicone rubber 0-type sealing ring (13) is arranged at the joint of the plug and the socket.
3. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 1, characterized in that: the outer part of the conical protective sleeve (2) is provided with a three-step structure.
4. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 1, characterized in that: the platinum resistance element (15) is arranged in a variable-diameter conical structure.
5. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 4, characterized in that: the shape of the resistor element mounting cavity is the same as that of the platinum resistor element (15).
6. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 1, characterized in that: extension section reinforcement pipe (5) axial one end is equipped with threaded connection head, the axial other end is equipped with the toper bayonet joint, loose joint (4) be equipped with threaded connection head be assembled between/be connected between's screw thread butt joint groove, toper protective case (2) be equipped with toper bayonet joint be assembled between/be connected between's inserting groove.
7. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 6, characterized in that: the bottom in the thread butt joint groove is provided with a circle of conical sealing bulge, and the end part of the threaded connector shaft is provided with a conical section connected with the outer wall of the conical sealing bulge in a contact manner.
8. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 1, characterized in that: the signal cable assembly (9) comprises a low-smoke halogen-free flame-retardant cable (11).
9. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 8, characterized in that: the signal cable assembly (9) further comprises an annular corrugated protection pipe (12) coated outside the low-smoke halogen-free flame-retardant cable (11).
10. The platinum thermistor thermometer with high stability and fast response for nuclear power plant as claimed in claim 1, characterized in that: the pressure spring (7) is arranged in the movable joint (4) and is sleeved with the armored platinum thermal resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022916516.4U CN213658114U (en) | 2020-12-08 | 2020-12-08 | High-stability quick-response platinum thermal resistance thermometer for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022916516.4U CN213658114U (en) | 2020-12-08 | 2020-12-08 | High-stability quick-response platinum thermal resistance thermometer for nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN213658114U true CN213658114U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022916516.4U Active CN213658114U (en) | 2020-12-08 | 2020-12-08 | High-stability quick-response platinum thermal resistance thermometer for nuclear power station |
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| CN (1) | CN213658114U (en) |
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