Penetration piece suitable for melting and solidification process and provided with slidable protective sleeve

Abstract

The invention discloses a penetration piece provided with a slidable protective sleeve and suitable for the melting and solidification process. The penetration piece comprises a functional unit and a protective unit. The protection unit is mounted at a specified mounting position of a specified container; the functional unit is used for measuring or adjusting temperature data when melting / solidification phase change occurs in the container, and the functional unit is inserted into the protection unit and can slide in the protection unit in the axial direction of the functional unit. The penetration piece provided with the slidable protective sleeve and suitable for the melting and solidification process has the advantages of being resistant to irradiation, resistant to high temperature and high pressure, good in sealing performance and convenient to manufacture, disassemble and assemble, and has wide applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of melting and solidification, and particularly relates to a penetrator with a slidable protective sleeve applicable to the melting and solidification process. Background Art

[0002] The melting / solidification phase change process widely exists in fields such as metallurgy, casting, phase change energy storage, and phase change heat dissipation. This phase change process is usually accompanied by volume changes, and the stress generated by the volume changes will cause elastic and plastic deformations in the internal functional units of the equipment in use, such as temperature measurement units and heat exchange units, and finally damage the functional units. Taking protective measures for the functional units involved in this process is of great significance for ensuring the safety of the equipment.

[0003] In particular, in the lead-cooled fast reactor and sodium-cooled fast reactor of the fourth-generation advanced nuclear reactor, liquid metal is used as the working medium for the primary loop operation. During the start-up, emergency shutdown, and related experimental research processes of the reactor, the liquid metal has a melting / solidification phenomenon, which may damage penetrators such as temperature measurement and heating elements. In addition, both lead-based liquid metal and sodium-based liquid metal have high requirements for the airtightness of the equipment. Therefore, it is necessary to design a penetrator with good airtight performance and capable of protecting against the structural stress generated during the melting / solidification process. Summary of the Invention

[0004] The present invention provides a penetrator with a slidable protective sleeve applicable to the melting and solidification process. The axial direction of the penetrator is consistent with the volume expansion or contraction direction during the melting and solidification process. The penetrator includes a functional unit and a protective unit;

[0005] The protective unit is installed at a specified installation position of a specified container;

[0006] The functional unit is used to measure or adjust the temperature data during the melting / solidification phase change in the container. The functional unit is inserted into the protective unit and can slide axially along the functional unit within the protective unit.

[0007] Optionally, the protective unit includes an elastic connecting body, a sliding sleeve, and a sealing and fixing body; the sealing and fixing body is hollow to allow the functional unit to pass through; the bottom end of the sealing and fixing body is connected to the sliding sleeve through the elastic connecting body, and the elastic connecting body provides a sliding space for the relative sliding of the functional unit and the protective unit.

[0008] Optionally, the sliding sleeve is a hollow structure in the shape of a circular ring, a rectangular ring, or a triangular ring.

[0009] Optionally, the bottom of the sliding sleeve is sealed, and the top is communicated with the sealing and fixing body through the elastic connecting body.

[0010] Optionally, the elastic connection body is an elastic connection device of a spring, a corrugated pipe or a combination of a spring and a hose.

[0011] Optionally, an outer seal is provided on the outer periphery of the protection unit for forming a closed system between the protection unit and the container.

[0012] Optionally, an inner seal is provided between the top of the protection unit and the functional unit to form a closed system between the protection unit and the functional unit.

[0013] Optionally, the functional unit is a temperature measuring unit, a heating unit or a cooling unit.

[0014] The present invention provides a penetrator with a slidable protective sleeve applicable to the melting and solidification process. The penetrator includes a functional unit such as a temperature measuring unit, a heating unit or a cooling unit. The functional unit is arranged inside the protection unit. The whole penetrator has the advantages of radiation resistance, high temperature and high pressure resistance, good airtightness, and convenient manufacturing, disassembly and assembly, and has wide applicability.

[0015] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0017] Figure 1 is a schematic structural diagram of a penetrator with a slidable protective sleeve applicable to the melting and solidification process according to an embodiment of the present invention;

[0018] Figure 2 is an installation schematic diagram of a penetrator with a slidable protective sleeve applicable to the melting and solidification process according to an embodiment of the present invention.

[0019] Wherein, 1 - functional unit; 2 - protection unit; 3 - internal seal; 4 - external seal; 5 - elastic connection body; 6 - sliding sleeve; 7 - seal fixing body; 8 - installation position; 9 - container; 10 - heating rod; 11 - liquid metal liquid level. Detailed Embodiments

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0022] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0024] The embodiment of the present invention provides a penetrator with a slidable protective sleeve applicable to the melting and solidification process. The axis of the penetrator is consistent with or close to the volume expansion or contraction direction during the melting and solidification process, as Figure 1 shown. The penetrator of the present invention includes a functional unit 1 and a protective unit 2. Among them, the protective unit 2 is installed at a specified installation position of a specified container 9; the functional unit 1 is used to measure or adjust the temperature data when a melting / solidification phase change occurs in the container 9. The functional unit 1 is inserted into the protective unit 2 and can slide along the axis of the functional unit 1 within the protective unit 2.

[0025] Optionally, the functional unit 1 may be a temperature measurement unit, a heating unit or a cooling unit, such as a thermocouple sheathed thermocouple, a core heating rod, and a cooling heat exchanger heat transfer tube, to measure the temperature of the container 9 or to heat or cool the container 9.

[0026] Continue to refer to Figure 1 , the protection unit 2 includes an elastic connection body 5, a sliding sleeve 6 and a sealing and fixing body 7; the sealing and fixing body 7 is hollow for the function unit 1 to pass through; the bottom end of the sealing and fixing body 7 is connected to the sliding sleeve 6 through the elastic connection body 5, and the elastic connection body 5 provides a sliding space for the relative sliding of the function unit 1 and the protection unit 2.

[0027] Optionally, the sealing and fixing body 7 is a cylinder or a cone with a sealing surface on the outside. The sliding sleeve 6 is a hollow structure in the shape of a circular ring, a rectangular ring or a triangular ring. The bottom of the sliding sleeve 6 is sealed, and the top is communicated with the sealing and fixing body 7 through the elastic connection body 5. The elastic connection body 5 can be an elastic connection device such as a spring, a corrugated pipe or a spring combined with a hose.

[0028] Continue to refer to Figure 1 , an outer seal is provided on the outer periphery of the protection unit 2 to form a closed system between the protection unit 2 and the container 9. The disassembly and assembly of the function unit 1 do not affect the sealing performance of the equipment in use.

[0029] On the other hand, an inner seal is provided between the top of the protection unit 2 and the function unit 1 to form a closed system between the protection unit 2 and the function unit 1. When the elastic connection body 5 or the sliding sleeve 6 is accidentally damaged, the sealing performance of the equipment in use is not affected. In practical applications, the outer seal and the inner seal can be a metal ferrule, a sealing gasket, etc.

[0030] During actual installation, the axial direction of the through-piece is the same as or close to the direction of volume expansion (or contraction) during the melting and solidification process, as Figure 2 shown. The protection unit 2 is installed at the designated installation position 8 of the container 9. Assuming that the function unit 1 is a heating rod 10, the heating rod 10 can be inserted into the protection unit 2. When a melting / solidification phase change occurs in the container 9, the working medium in the container 9 expands or contracts upward into the free space. Under the mutual action of the working medium in the container 9 and the sliding sleeve 6, the sliding sleeve 6 will move along the axial direction of the through-piece. Under the action of the elastic connection body 5, after going through the melting / solidification cycle, the position of the sliding sleeve 6 of the through-piece will return to its original state. In this way, the heating rod 10 will not be affected by the huge stress generated during the melting / solidification process. In addition, the through-piece adopts two-stage internal and external sealing, which can fully ensure the sealing performance of the equipment. When the elastic connection body 5 is selected as a corrugated pipe, since the protection unit 2 and the container 9 can form a seal, the disassembly and assembly of the heating rod 10 do not affect the sealing performance of the equipment in use. Therefore, this device not only has good sealing performance and is convenient for disassembly and assembly, but also can reduce the influence of structural deformation generated during the melting / solidification process on the function unit 1.

[0031] The penetrator with a slidable protective sleeve applicable to the melting and solidification process according to an embodiment of the present invention includes a functional unit 1 and a protective unit 2. The functional unit 1 is the carrier for realizing the functions of the penetrator. The protective unit 2 includes an internal and external seal 4, a seal fixing body 3, a sliding sleeve 6, and an elastic connecting body 5, which plays a role in protecting the functional unit 1. The functional unit 1 sequentially passes through the internal seal 3, the seal fixing body 7, and the elastic connecting body 5 and is installed inside the sliding sleeve 6, and is installed at a designated installation position of the container through the external seal 4. During the melting and solidification process of the metal, the volume change will cause the penetrator to deform axially. The elastic connecting body according to the embodiment of the present invention allows the sliding sleeve 6 to slide along the axis of the functional unit 1, alleviating the influence of the deformation on the functional unit 1. In addition, after the penetrator is installed, the functional unit 1 can be quickly disassembled and assembled without affecting the sealing performance. The penetrator with a slidable protective sleeve applicable to the melting and solidification process provided by the embodiment of the present invention is a new type of penetrator integrating the functions of alleviating the influence of deformation, high-efficiency sealing, and quick disassembly and assembly. Its structure is simple and has practical value.

[0032] The penetrator according to the embodiment of the present invention also adopts a new structure, two seals (the protective unit and the container, the protective unit and the functional unit), a flexible sliding sleeve (the protective unit slides freely, the functional unit remains stationary), and an integrated measurement structure (the functional unit is integrated into the sleeve to form an anti-damage armored integrated measurement structure, which can penetrate into the container for measurement). Compared with the existing penetrators for electrical signal transmission, the penetrator of the present application has new functions, such as a temperature measurement unit, a heating unit, a cooling unit, etc. The penetrator according to the embodiment of the present invention is applicable to the measurement of parameters during the melting and solidification process. This process usually generates stress, which will affect the performance of the measurement sensor (functional unit). Therefore, a slidable sleeve (protective unit) is adopted to alleviate the influence of the stress on the functional unit.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A penetration with a slidable protective sleeve suitable for a melting and solidification process, characterized in that: The axial direction of the penetration piece is consistent with the direction of volume expansion or contraction during the melting and solidification process, and the penetration piece comprises a functional unit (1) and a protective unit (2); The protection unit (2) is installed at a designated installation position of a designated container (9); The functional unit (1) is used to measure or adjust temperature data when a melting / solidification phase change occurs in a container (9). The functional unit (1) is inserted into the protective unit (2) and can slide in the protective unit (2) along the axial direction of the functional unit (1).

2. The penetration piece according to claim 1, characterized in that The protective unit (2) comprises an elastic connector (5), a sliding sleeve (6) and a sealing fixed body (7); the sealing fixed body (7) is hollow so as to allow the functional unit (1) to pass through; the bottom end of the sealing fixed body (7) is connected to the sliding sleeve (6) via the elastic connector (5), and the elastic connector (5) provides a sliding space for the functional unit (1) and the protective unit (2) to slide relative to each other.

3. The penetration piece according to claim 2, characterized in that: The sliding sleeve (6) is a hollow structure in the shape of a circular ring, a rectangular ring, or a triangular ring.

4. The penetration piece according to claim 2, characterized in that: The bottom of the sliding sleeve (6) is sealed, and the top is connected to the sealing fixed body (7) via the elastic connecting body (5).

5. The penetration piece according to claim 2, characterized in that: The elastic connecting body (5) is an elastic connecting device of a spring, a corrugated tube or a spring combined with a hose.

6. The penetration piece according to claim 1, characterized in that An outer sealing member is provided on the outer periphery of the protection unit (2) so as to form a closed system between the protection unit (2) and the container (9).

7. The penetration piece according to claim 1, characterized in that An inner seal is provided at the top of the protection unit (2) and between the protection unit (2) and the functional unit (1), so that a closed system is formed between the protection unit (2) and the functional unit (1).

8. The penetration piece according to any one of claims 1 to 6, characterized in that: The functional unit (1) is a temperature measuring unit, a heating unit or a cooling unit.

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