CN111681800A - Double-layer insulating sleeve, manufacturing method thereof and thermionic energy converter - Google Patents
Double-layer insulating sleeve, manufacturing method thereof and thermionic energy converter Download PDFInfo
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- CN111681800A CN111681800A CN202010583501.2A CN202010583501A CN111681800A CN 111681800 A CN111681800 A CN 111681800A CN 202010583501 A CN202010583501 A CN 202010583501A CN 111681800 A CN111681800 A CN 111681800A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 125000006850 spacer group Chemical group 0.000 claims description 38
- 229910010293 ceramic material Inorganic materials 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 10
- 229910052758 niobium Inorganic materials 0.000 claims description 10
- 239000010955 niobium Substances 0.000 claims description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 241000968352 Scandia <hydrozoan> Species 0.000 claims description 4
- HJGMWXTVGKLUAQ-UHFFFAOYSA-N oxygen(2-);scandium(3+) Chemical compound [O-2].[O-2].[O-2].[Sc+3].[Sc+3] HJGMWXTVGKLUAQ-UHFFFAOYSA-N 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 24
- 238000000034 method Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 3
- 230000004992 fission Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21H—OBTAINING ENERGY FROM RADIOACTIVE SOURCES; APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES, NOT OTHERWISE PROVIDED FOR; UTILISING COSMIC RADIATION
- G21H1/00—Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes, nuclear or atomic batteries
- G21H1/10—Cells in which radiation heats a thermoelectric junction or a thermionic converter
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
The invention provides a double-layer insulating sleeve, which comprises: an inner tube; and an outer tube disposed coaxially with the inner tube outside the inner tube, wherein an embedding assembly is disposed between an outer wall of the inner tube and an inner wall of the outer tube, the embedding assembly coaxially disposing the inner tube and the outer tube together and maintaining an insulating relationship therebetween. The double-layer insulating sleeve manufactured according to the invention realizes the firm interval positioning of the inner pipe and the outer pipe through the embedded assembly between the outer pipe and the inner pipe, and the inner pipe and the outer pipe are not contacted due to the deformation of the inner pipe even under a long-time high-temperature state, so that the insulativity between the inner pipe and the outer pipe is ensured, and the service life of a thermionic energy converter adopting the double-layer insulating sleeve is correspondingly greatly prolonged. A thermionic energy converter including the double-layer bushing and a method of manufacturing the double-layer bushing are also provided.
Description
Technical Field
The present invention relates to the field of high temperature insulation, and more particularly, to a double-layered bushing capable of maintaining insulation in a high temperature state, a method of manufacturing such a bushing, and a thermionic energy converter including such a bushing.
Background
The existing nuclear power plant generally generates heat through the core reaction of the fuel reactor, transfers the heat of the core to the steam generator through the multistage heat exchange system, and is used for generating steam in the steam generator, and the steam turbine drives the generator to rotate together through the steam, so as to generate electricity. Therefore, the existing nuclear power plant has a longer energy conversion chain in the process of converting thermal energy into electric energy, and the longer the process of converting the energy is, the greater the energy loss is brought, and accordingly, the energy conversion rate is reduced.
The thermionic energy converter is a device for directly converting thermal energy into electric energy, and does not need to transfer and convert various energies in the above process, thereby having a high energy conversion rate. The thermionic energy converter is typically a double-walled sleeve structure, wherein the inner sleeve serves as the emitter of the thermionic energy converter and the outer sleeve serves as the receiver thereof, and the length of the inner sleeve is typically greater than the length of the outer sleeve. The inner sleeve as the emitter and the outer sleeve as the receiver are both made of high-temperature alloy materials, the gap between the two sleeves is about 0.5mm, and an electrode gap space in a vacuum environment is formed between the inner sleeve and the outer sleeve and other parts at the end parts of the inner sleeve and the outer sleeve. The thermionic energy converter heats the inner sleeve serving as an emitter by utilizing heat energy generated by nuclear fission of nuclear fuel, so that thermions generated by the inner sleeve are emitted out, the thermions are emitted to the outer sleeve serving as a receiver through an electrode gap and are finally received by the outer sleeve, and the inner sleeve, the outer sleeve and an external circuit load form a closed loop so as to supply electric energy to the external circuit load. The inner casing is subject to the expansion pressure and high temperature creep of the fuel pellets of the nuclear fuel during long-term operation, and is easily deformed, so that the inner casing and the outer casing are in contact, and short circuit of the energy converter is caused, and the energy converter fails. Therefore, it is desirable to provide a double-layer sleeve structure capable of ensuring that the inner sleeve and the outer sleeve are always separated during high-temperature operation to avoid short circuit, so as to improve the service life of the energy converter using the double-layer sleeve.
Disclosure of Invention
In order to solve at least one aspect of the above technical problems, an embodiment of the present invention provides a double-layer insulation bushing including: an inner tube; and an outer tube disposed coaxially with the inner tube outside the inner tube, wherein an embedding assembly is disposed between an outer wall of the inner tube and an inner wall of the outer tube, the embedding assembly causing the inner tube and the outer tube to be disposed coaxially together and maintaining an insulating relationship therebetween.
According to a preferred embodiment of the double-walled insulating sleeve according to the invention, the embedding assembly comprises a positioning ring arranged relatively fixedly in the inner wall of the outer tube and an insulating spacer arranged on the positioning ring.
In another preferred embodiment of the double-layer insulation sleeve according to the present invention, a plurality of positioning grooves are provided in the inner wall of the outer tube at regular intervals, and the positioning rings are fixedly disposed in the positioning grooves.
According to a further preferred embodiment of the double-layer insulating sleeve according to the invention, a plurality of positioning holes are provided in the positioning ring, the insulating spacers being arranged in the positioning holes.
In a further preferred embodiment of the double-walled insulating sleeve according to the invention, the retaining ring comprises an opening in the circumference to give the retaining ring resilience.
According to a further preferred embodiment of the double-walled insulating sleeve according to the invention, the positioning ring is made of niobium.
In another preferred embodiment of the double-layer insulating sleeve according to the invention, the insulating spacer is made of a ceramic material.
According to a further preferred embodiment of the double-layer insulation bushing according to the invention, the ceramic material comprises scandium oxide.
The present invention also provides a thermionic energy converter comprising: a fuel assembly and a double-layer insulating sleeve as any one of the above, wherein the fuel assembly is disposed within an inner tube of the double-layer insulating sleeve.
The embodiment of the invention also provides a manufacturing method of the double-layer insulating sleeve, which comprises the following steps: providing an inner tube; providing an outer tube which can be sleeved outside the inner tube; providing an embedding component, and arranging the embedding component on the inner wall of the outer pipe; and inserting the inner tube within the embedment assembly such that the inner tube and the outer tube are coaxially disposed together and maintain an insulative relationship therebetween.
According to a preferred embodiment of the method for manufacturing a double-layer insulating sleeve of the present invention, the embedding assembly includes a positioning ring and an insulating spacer, and the step of disposing the embedding assembly on the inner wall of the outer tube includes: the positioning ring is fixedly disposed on an inner wall of the outer tube, and the insulating spacer is disposed on the positioning ring.
In another preferred embodiment of the method of manufacturing a double-layer insulation bushing according to the present invention, the step of fixedly disposing the retainer ring on the inner wall of the outer tube includes: and a plurality of positioning grooves are uniformly arranged in the inner wall of the outer pipe at intervals, and the positioning rings are uniformly arranged in the positioning grooves.
According to still another preferred embodiment of the method for manufacturing a double-layer insulation sleeve of the present invention, the step of disposing the insulating spacer on the positioning ring includes: a plurality of positioning holes are provided in the positioning ring, and the insulating spacers are disposed in the positioning holes.
In a further preferred embodiment of the method for manufacturing a double-layer insulating sleeve according to the invention, the positioning ring comprises an opening in the circumference to give the positioning ring elasticity.
According to a further preferred embodiment of the method for manufacturing a double-walled insulating sleeve according to the invention, the positioning ring is manufactured from a niobium material.
In another preferred embodiment of the method for manufacturing a double-layer insulating sleeve according to the invention, the insulating spacer is manufactured from a ceramic material.
According to a further preferred embodiment of the method for manufacturing a double-layer insulation bushing according to the invention, the ceramic material comprises scandium oxide.
Compared with the prior art, the invention has at least one of the following beneficial effects:
(1) the double-layer insulating sleeve manufactured according to the invention realizes the firm interval positioning of the inner pipe and the outer pipe through the embedded assembly between the outer pipe and the inner pipe, and the inner pipe and the outer pipe are not contacted due to the deformation of the inner pipe even under a long-time high-temperature state, so that the insulativity between the inner pipe and the outer pipe is ensured, and the service life of a thermionic energy converter adopting the double-layer insulating sleeve is correspondingly greatly prolonged.
(2) The outer pipe and the inner pipe can be uniformly spaced along the axial direction by the positioning grooves and the corresponding positioning rings which are uniformly spaced along the inner wall of the outer pipe, and the inner pipe and the outer pipe can be uniformly spaced in the circumferential direction by the positioning holes and the corresponding insulating spacers which are uniformly spaced along the positioning rings, so that the spaced relation between the whole outer wall surface of the inner pipe and the whole inner wall surface of the outer pipe is ensured, the insulating relation of the inner pipe and the outer pipe in a high-temperature state is ensured, and the emitting electrode and the receiving electrode of the thermionic energy converter adopting the double-layer insulating sleeve have excellent insulating relation in the high-temperature state.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
FIG. 1A is an axial partial cross-sectional view of a double layer insulating sleeve according to the present invention;
FIG. 1B is a cross-sectional view taken along line A-A in FIG. 1A;
FIG. 2A is an axial partial cross-sectional view of an outer tube of a double layer insulating sleeve according to the present invention;
FIG. 2B is a cross-sectional view taken along line B-B in FIG. 2A;
FIG. 3 is an exploded perspective view of a double layer bushing insert assembly according to the present invention; and
fig. 4 is a cross-sectional view of an outer tube provided with an embedding assembly of a double-layer insulation bushing according to the present invention.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The double-layered insulation bushing according to the present invention mainly includes an inner tube 12 and an outer tube 14, as shown in fig. 1A and 1B, wherein fig. 1A shows an axial partial sectional view of the double-layered insulation bushing, and fig. 1B is a sectional view taken along line a-a in fig. 1A. The double-layer insulation sleeve according to the present invention is described herein by way of example as applied to a thermionic energy converter, and it should be understood that the double-layer insulation sleeve may be applied to any other device or apparatus that requires a double-layer sleeve structure and that ensures insulation between an inner pipe and an outer pipe. The outer tube 14 is disposed coaxially with the inner tube 12 outside the inner tube 12. In a thermionic energy converter employing the double-layer bushing, a fuel assembly may be disposed inside the inner tube 12. Here, the inner tube 12 may serve as an emitter of a thermionic energy converter, the outer tube 14 may serve as a receiver of the thermionic energy converter, the inner tube 12 may be heated by fission energy of a fuel assembly disposed inside the inner tube 12 to generate thermal electrons from the inner tube 12, thereby constituting the emitter, and the thermal electrons may be emitted to the outer tube 14 serving as the receiver, and a circuit may be formed through a circuit disposed between the inner tube 12 and the outer tube 14 to supply power to an electric appliance disposed in the circuit. Since the inner tube 12 as the emitter and the outer tube 14 as the receiver have a gap of only about 0.5mm therebetween, it is necessary to maintain good coaxiality therebetween to ensure a stable gap therebetween and to ensure insulation therebetween. To this end, an embedded assembly 20 is provided between the outer wall of the inner tube 12 and the inner wall of the outer tube 14, the embedded assembly 20 being capable of coaxially disposing the inner tube 12 and the outer tube 14 together and maintaining an insulating relationship therebetween. Here, the insertion assembly 20 can also ensure a stable gap between the outer wall of the inner tube 12 and the inner wall of the outer tube 14 to prevent the inner tube 12 from contacting the inner wall of the outer tube 14 due to thermal deformation.
The structure of the double-layered insulation bushing embedment assembly 20 according to the present invention is specifically explained as follows. The embedment assembly 20 includes a retaining ring 202 relatively fixedly disposed in the inner wall of the outer tube 14 and an insulating spacer 204 fixedly disposed by the retaining ring 202. A locating ring 202 is secured within the inner wall of the outer tube 14 and an insulating spacer 204 may be fixedly disposed within the locating ring 202, the insulating spacer 204 being in contact with the outer wall of the inner tube 12 and the inner wall of the outer tube 14, respectively, to space the inner tube 12 and the outer tube 14 apart while establishing an insulating relationship therebetween.
As shown in fig. 2A and 2B, there are shown a longitudinal sectional view (in which only one positioning groove is shown) of the outer tube 14 of the double-layered insulation sleeve according to the present invention and a sectional view taken along line B-B. A plurality of positioning grooves 142 may be uniformly spaced in the inner wall of the outer tube 14, and one positioning ring 202 is fixedly disposed in each positioning groove 142, for example, in the outer tube 14 with a length of 630mm, 6 positioning grooves 142 are uniformly spaced, as shown in fig. 4, the width of each positioning groove 142 may be set to 8mm, the distance between two adjacent positioning grooves 142 is set to 60mm, correspondingly, 6 positioning rings 202 are provided, and the width of each positioning ring 202 is set to 8mm, where it is only necessary to ensure that the positioning grooves 142 and the positioning rings 202 have proper tolerance in the manufacturing process, that is, the assembly relationship between the positioning grooves 142 and the positioning rings 202 can be satisfied. It should be noted that the above dimensions and numbers of the positioning grooves 142 and the positioning rings 202 are merely exemplary, and other suitable dimensions and numbers of the positioning grooves 142 and the positioning rings 202 may be determined according to the specific conditions of the outer tube 14.
In order to fixedly dispose the insulating spacers 204 in the positioning ring 202, a plurality of positioning holes 2022 may be disposed in the positioning ring 202, as shown in fig. 3, which shows an exploded perspective view of the embedded assembly 20, wherein nine positioning holes 2022 are disposed, and one insulating spacer 204 is disposed in each positioning hole 2022. Thereby, it is possible to provide a plurality of insulating spacers 204 along the circumferential direction of the positioning ring 202 so as to space the inner pipe 12 and the outer pipe 14 at a plurality of positions along the circumferential direction of the inner pipe 12 and the outer pipe 14, so that the positional relationship of the inner pipe 12 and the outer pipe 14 in the circumferential direction is more secured, preventing contact of both at any position in the circumferential direction. It should be noted that the positioning holes 2022 are preferably uniformly spaced in the positioning ring 202, but may be non-uniformly spaced, such as being grouped, or may be spaced in other ways, and more positioning holes 2022 or fewer positioning holes 2022 may be provided, just to ensure that the insulating spacers 204 in the positioning holes 2022 can maintain a stable spacing between the inner tube 12 and the outer tube 14.
Furthermore, to facilitate the mounting of the positioning ring 202 in the positioning groove 142 of the outer tube 14, the positioning ring 202 may be provided in the form of an opening, i.e. the positioning ring 202 is provided to comprise an opening 2024 on its circumference, so that the positioning ring 202 is resilient. That is, when the positioning ring 202 is installed in the positioning groove 142 of the outer tube 14, the positioning ring 202 can be clamped by the clamp, so that the positioning ring 202 is shrunk and deformed to smoothly enter the outer tube 14, and when the positioning ring 202 is placed in the positioning groove 142, the clamp is released, so that the positioning ring 202 is clamped in the positioning groove 142.
Further, the positioning ring 202 may be made of niobium, which has a high melting point and a low capturing cross section for thermal neutrons, and is capable of adapting to the working environment inside the thermionic energy converter. Of course, other materials may be used to form the retaining ring 202 in other applications, such as stainless steel for the retaining ring 202 where high temperature resistance is only required. Here, the positioning ring 202 can be manufactured by using an elongated strip of niobium material, first machining the positioning holes 2022 in the strip of niobium material, for example, nine positioning holes 2022 can be machined at regular intervals in the strip of niobium material of the length required for manufacturing a single positioning ring 202, the positioning holes 2022 can be arranged in a rectangular shape, for example, and then the strip of niobium material with the positioning holes 2022 can be machined in a circular shape with the notches 2024 by using a special tool. The insulating spacer 204 may be made of a ceramic material to ensure its high temperature resistance and insulation. Here, the insulating spacer 204 may be made of scandia, but a ceramic material commonly used in the industry may be used. The insulating spacer 204 may be provided to have a cylindrical shape with a diameter set equal to the distance between the outer tube 14 and the inner tube 12. Of course, the insulating spacer 204 may also take other shapes, such as a rectangular parallelepiped shape, a square shape, etc., as long as the insulating spacer 204 can be fixedly disposed in the positioning hole 2022 of the positioning ring 202 and the insulation between the inner tube 12 and the outer tube 14 can be ensured.
A method for manufacturing a double-layer insulating sleeve according to the present invention will be described below. The manufacturing method of the double-layer insulating sleeve according to the invention comprises the steps of providing an inner tube 12, wherein the inner tube 12 can be used as an emitter of a thermionic energy converter; providing an outer tube 14, wherein the outer tube 14 can be sleeved outside the inner tube 12, the outer tube 14 can be used as a receiving electrode of the thermionic energy converter, and in addition, in order to form a loop of the thermionic energy converter between the inner tube 12 and the outer tube 14, lead interfaces can be respectively arranged on the inner tube 12 and the outer tube 14 and used for connecting an external circuit; providing an embedded assembly 20, disposing the embedded assembly 20 on the inner wall of the outer tube 14; the inner tube 12 is inserted into the embedded assembly 20 such that the inner tube 12 and the outer tube 14 are coaxially disposed together and maintain an insulating relationship therebetween. In the case of manufacturing a thermionic energy converter, it is also necessary to provide a fuel assembly and position the fuel assembly within the inner tube 12. The fixed connection between the inner tube 12 and the outer tube 14 is achieved by the embedded assembly 20 and the proper distance is maintained between the outer wall of the inner tube 12 and the inner wall of the outer tube 14, thereby maintaining insulation therebetween.
The method for manufacturing the double-layer insulation bushing according to the present invention, wherein the embedding assembly 20 may include a positioning ring 202 and an insulation spacer 204, the step of disposing the embedding assembly 20 on the inner wall of the outer tube 14 includes: a retaining ring 202 is fixedly disposed on the inner wall of the outer tube 14 and an insulating spacer 204 is disposed on the retaining ring 202. The insulating spacer 204 serves to maintain the gap and insulating relationship between the outer tube 12 and the inner tube 14, and the retaining ring 202 serves to retain the insulating spacer 204.
Further, the step of fixedly disposing the retaining ring 202 on the inner wall of the outer tube 14 includes: a plurality of positioning grooves 142 are provided at regular intervals in the inner wall of the outer tube 14, and a positioning ring 202 is fixedly disposed in the positioning grooves 142. Here, the plurality of positioning grooves 142 are provided in a uniformly spaced manner only as an example, and may be provided in a non-uniformly spaced manner. The positioning slot 142 is capable of securing the positioning ring 202 such that the positioning ring 202 does not become dislodged from the inner wall of the outer tube 14.
The step of placing the insulating spacer 204 on the retaining ring 202 includes: a plurality of positioning holes 2022 are provided in the positioning ring 202, and insulating spacers 204 are provided in the positioning holes 2022. The plurality of positioning holes 2022 may be arranged at uniform intervals or at non-uniform intervals. Advantageously, at least two positioning holes 2022 may be provided along the positioning ring 202, where nine positioning holes 2022 are provided along the positioning ring 202, such that one insulating spacer 204 is provided within each positioning hole 2022. To facilitate installation of the retaining ring 202, the retaining ring 202 may be configured to include an opening 2024 about its circumference to provide resiliency to the retaining ring 202 to facilitate the shrinking of the retaining ring 202 during installation of the retaining ring 202 into the outer tube 14, thereby facilitating installation.
Further, the retaining ring 202 may be fabricated from a niobium material to meet the requirements of the retaining ring 202 for operation in high temperature environments. The insulating spacer 204 may be fabricated using a ceramic material, preferably a ceramic material comprising scandia. The scandium oxide material has high melting point and good high-temperature insulation, and can completely meet the insulation performance requirement under the high-temperature operation environment.
The double-layer insulating sleeve manufactured according to the invention realizes the firm interval positioning of the inner pipe and the outer pipe through the embedded assembly between the outer pipe and the inner pipe, and the inner pipe and the outer pipe are not contacted due to the deformation of the inner pipe even under a long-time high-temperature state, so that the insulativity between the inner pipe and the outer pipe is ensured, and the service life of a thermionic energy converter adopting the double-layer insulating sleeve is correspondingly greatly prolonged. The outer pipe and the inner pipe can be uniformly spaced along the axial direction through the positioning grooves and the corresponding positioning rings which are uniformly spaced along the inner wall of the outer pipe, and meanwhile, the inner pipe and the outer pipe are uniformly spaced along the circumferential direction through the positioning holes and the corresponding insulating spacers which are uniformly spaced along the positioning rings, so that the spaced relation between the whole outer wall surface of the inner pipe and the whole inner wall surface of the outer pipe is ensured, the insulating relation between the inner pipe and the outer pipe in a high-temperature state is ensured, and the insulating relation between the emitting electrode and the receiving electrode of the thermionic energy converter adopting the double-layer insulating sleeve in the high-temperature state is further ensured.
It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.
Claims (17)
1. A double-layer insulating sleeve comprising:
an inner tube; and
an outer tube disposed coaxially with the inner tube outside the inner tube,
characterized in that an embedding assembly is disposed between the outer wall of the inner tube and the inner wall of the outer tube, the embedding assembly causing the inner tube and the outer tube to be coaxially disposed together and to maintain an insulating relationship therebetween.
2. The double-layer insulating sleeve according to claim 1, wherein:
the embedding assembly includes a positioning ring relatively fixedly disposed in an inner wall of the outer tube and an insulating spacer disposed on the positioning ring.
3. The double-layer insulating sleeve according to claim 2, wherein:
a plurality of positioning grooves are uniformly arranged in the inner wall of the outer pipe at intervals, and the positioning rings are fixedly arranged in the positioning grooves.
4. The double-layer insulating sleeve according to claim 2, wherein:
a plurality of positioning holes are arranged in the positioning ring, and the insulating spacers are arranged in the positioning holes.
5. The double-layer insulating sleeve according to claim 2, wherein:
the retaining ring includes an opening in the circumference to provide resiliency to the retaining ring.
6. The double-layer insulating sleeve according to claim 2, wherein:
the retaining ring is made of niobium.
7. The double-layer insulating sleeve according to claim 2, wherein:
the insulating spacer is made of a ceramic material.
8. The double-layer insulating sleeve according to claim 7, wherein:
the ceramic material comprises scandia.
9. A thermionic energy converter, comprising:
a fuel assembly; and
the double-layer insulating sleeve according to any one of claims 1 to 8, wherein the fuel assembly is disposed within an inner tube of the double-layer insulating sleeve.
10. A manufacturing method of a double-layer insulating sleeve comprises the following steps:
providing an inner tube;
providing an outer tube which can be sleeved outside the inner tube;
providing an embedding component, and arranging the embedding component on the inner wall of the outer pipe; and
inserting the inner tube within the embedment assembly such that the inner tube and the outer tube are coaxially disposed together and maintain an insulative relationship therebetween.
11. The method of manufacturing a double-layer insulating sleeve according to claim 10,
the embedding assembly includes a positioning ring and an insulating spacer, and the step of disposing the embedding assembly on the inner wall of the outer tube includes: the positioning ring is fixedly disposed on an inner wall of the outer tube, and the insulating spacer is disposed on the positioning ring.
12. The method of manufacturing a double-layer insulating sleeve according to claim 11,
the step of fixedly disposing the retainer ring on the inner wall of the outer tube includes: and a plurality of positioning grooves are uniformly arranged in the inner wall of the outer pipe at intervals, and the positioning rings are fixedly arranged in the positioning grooves.
13. The method of manufacturing a double-layer insulating sleeve according to claim 11,
the step of disposing the insulating spacer on the retaining ring comprises: a plurality of positioning holes are provided in the positioning ring, and the insulating spacers are disposed in the positioning holes.
14. The method of manufacturing a double-layer insulating sleeve according to claim 11,
the retaining ring includes an opening in the circumference to provide resiliency to the retaining ring.
15. The method of manufacturing a double-layer insulating sleeve according to claim 11,
the retaining ring is fabricated from a niobium material.
16. The method of manufacturing a double-layer insulating sleeve according to claim 11,
the insulating spacer is fabricated from a ceramic material.
17. The method of manufacturing a double-layer insulating sleeve according to claim 16,
the ceramic material comprises scandia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583501.2A CN111681800A (en) | 2020-06-23 | 2020-06-23 | Double-layer insulating sleeve, manufacturing method thereof and thermionic energy converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583501.2A CN111681800A (en) | 2020-06-23 | 2020-06-23 | Double-layer insulating sleeve, manufacturing method thereof and thermionic energy converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111681800A true CN111681800A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010583501.2A Pending CN111681800A (en) | 2020-06-23 | 2020-06-23 | Double-layer insulating sleeve, manufacturing method thereof and thermionic energy converter |
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| CN (1) | CN111681800A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6037697A (en) * | 1999-01-18 | 2000-03-14 | General Atomics | Thermionic converter and method of making same |
| CN1428020A (en) * | 2000-03-06 | 2003-07-02 | 恩尼库股份有限公司 | Thermal diode for energy conversion |
| CN204834070U (en) * | 2015-07-03 | 2015-12-02 | 中国原子能科学研究院 | Thermion fuel element |
| CN110417296A (en) * | 2019-07-22 | 2019-11-05 | 中国原子能科学研究院 | Thermionic generation experimental provision with protective case |
-
2020
- 2020-06-23 CN CN202010583501.2A patent/CN111681800A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6037697A (en) * | 1999-01-18 | 2000-03-14 | General Atomics | Thermionic converter and method of making same |
| CN1428020A (en) * | 2000-03-06 | 2003-07-02 | 恩尼库股份有限公司 | Thermal diode for energy conversion |
| CN204834070U (en) * | 2015-07-03 | 2015-12-02 | 中国原子能科学研究院 | Thermion fuel element |
| CN110417296A (en) * | 2019-07-22 | 2019-11-05 | 中国原子能科学研究院 | Thermionic generation experimental provision with protective case |
Non-Patent Citations (1)
| Title |
|---|
| 钟武烨等: "空间热离子能量转换技术发展综述", 《深空探测学报》 * |
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