CN209839494U - Heat insulation block - Google Patents
Heat insulation block Download PDFInfo
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- CN209839494U CN209839494U CN201920036910.3U CN201920036910U CN209839494U CN 209839494 U CN209839494 U CN 209839494U CN 201920036910 U CN201920036910 U CN 201920036910U CN 209839494 U CN209839494 U CN 209839494U
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- heat preservation
- sodium
- preservation box
- electric heating
- heating wire
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Abstract
The utility model belongs to the technical field of the reactor is waded with sodium heat preservation, concretely relates to heat insulating block for the heat preservation and the companion's heat of wading sodium pipeline (10) of sodium-cooled fast reactor, it adheres to including the detachable concatenation wade heat preservation box (7) on sodium pipeline (10), heat preservation box (7) inside packing insulation material, be equipped with electric heating wire (4) on heat preservation box inner wall (9) surface of heat preservation box (7) the surface setting of the heat preservation box outer wall (8) of heat preservation box (7) is connected quick-operation joint (6) of electric heating wire (4) are used for doing electric heating wire (4) provide the power. The utility model discloses a fast reactor wades among sodium pipeline, the equipment system electric heating wire, sodium leak the integration of parts such as detection silk, thermocouple and insulation construction module, can realize fast reactor high temperature sodium pipeline integration insulation construction modular design, can simplify construction and later maintenance operation, reduces the cost, improves comprehensive economic benefits.
Description
Technical Field
The utility model belongs to the technical field of the reactor is waded with sodium and is kept warm, concretely relates to heat preservation block.
Background
At present, among the reactor heat preservation scheme, to the thermal equipment such as container, pipeline, valve, flange go on can dismantle heat preservation measure, mostly adopt the heat preservation box package assembly who contains different insulation material, this kind of heat preservation box structure is similar to lapped heat preservation module, through a block concatenation on the spot to constitute the heat preservation casing of thermal equipment surface. However, in the sodium-involved system equipment of the sodium-cooled fast reactor, because the coolant is sodium, an auxiliary electric heating system and a sodium leakage detection device are required to be arranged aiming at the special physical and chemical properties of sodium, but the prior detachable heat preservation scheme can not integrate the two functions, and in actual operation, the signal reliability of the sodium leakage detection module is low due to the mutual interference of auxiliary devices such as an electric heating wire and the like and the sodium leakage detection module. On the other hand, the auxiliary electric heating system and the sodium leakage detection device need to be designed and arranged independently, and the actual requirements of users cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the integrated problem of parts such as electric heating wire, sodium leakage detection silk, thermocouple and insulation structure module in sodium-cooled fast reactor's sodium pipeline, equipment system. The modularized design can simplify the installation and construction and the subsequent maintenance operation, reduce the overall cost and improve the comprehensive economic benefit.
For reaching above purpose, the utility model discloses a technical scheme be a heat preservation piece for the heat preservation and the companion heat of sodium-cooled fast reactor's sodium pipeline of wading, including the detachable concatenation adhere to wade the last heat preservation box of sodium pipeline, the inside insulation material that fills of heat preservation box, wherein, be equipped with electric heating wire on the heat preservation box inner wall surface of heat preservation box the surface setting of the heat preservation box outer wall of heat preservation box is connected electric heating wire's quick-operation joint is used for doing electric heating wire provides the power.
Further, the electric heating wires are densely distributed on the outer surface of the inner wall of the heat preservation box; the heating section of the electric heating wire is fixed on the outer surface of the inner wall of the heat preservation box through stainless steel metal foil in a spot welding mode, and the inner working section of the electric heating wire is fixed on the inner surface of the inner wall of the heat preservation box in a spot welding mode; two ends of the heating section of the electric heating wire penetrate through the inner wall of the heat preservation box to be connected with the internal working section, the heating section of the electric heating wire adopts a double-core armored electric heating wire, and the internal working section of the electric heating wire connects two poles of the double-core armored electric heating wire to the quick connector; the electric heating wire can set the working temperature through the control cabinet, and can bear the temperature environment of 800 ℃ at most.
Furthermore, the quick joint is a porous joint, wherein two jacks are connected with the electric heating wire and used as power supply jacks of the electric heating wire; one jack is used as a jack for ground wire protection required by the whole heat insulation block; two quick connectors are arranged on each heat preservation box along the axial direction of the sodium-involved pipeline, and the quick connectors on the two heat preservation boxes which are circumferentially and correspondingly connected are close to the same lap joint; and cable lines at the same positions of the two quick connectors on each heat preservation box are connected, so that external wiring connection is facilitated.
Further, the heat-insulating block has single-block detachability, and does not influence the heat preservation and the heat tracing of other heat-insulating blocks after the heat-insulating block is removed.
Furthermore, the heat preservation box is made of stainless steel materials and adopts an HALF shape, the outer surface of the outer wall of the heat preservation box is provided with a quick hasp, and the quick hasps are positioned at the edges of the two adjacent heat preservation boxes which are connected with each other.
Furthermore, a sodium leakage detection wire is also arranged on the outer surface of the inner wall of the heat preservation box; the outer surface of the inner wall of the heat preservation box is provided with a groove, and the sodium leakage detection wire is fixed in the groove through stainless steel metal foil spot welding and is not in contact with the electric heating wire; two jacks on the quick connector are connected with two poles of the sodium leakage detection wire and used as power supply jacks of the sodium leakage detection wire; the sodium leakage detection wire is further connected with an external sodium leakage signal receiver through an external cable, and transmission of sodium leakage signals is achieved.
Furthermore, the sodium leakage detection wire is fixed in the groove through a plurality of ceramic support rings arranged at intervals.
Furthermore, a thermocouple is arranged on the heat preservation box, the thermocouple is arranged on the outer wall of the heat preservation box in a penetrating manner through a positioning ring, a screw cap, a hollow bolt and a first fastening nut, and a thermocouple temperature measuring end at the bottom end of the thermocouple penetrates through the heat preservation box and penetrates out of the inner wall of the heat preservation box; the nut with be equipped with strong spring and weak spring in the hollow bolt, make thermocouple temperature measurement end can be in hug closely when sodium pipeline takes place to shake on the sodium pipeline.
Further, the thermocouple 13 is an armored thermocouple.
Furthermore, the temperature measuring end of the thermocouple is also provided with a heat conducting block for increasing the contact area between the temperature measuring end of the thermocouple and the sodium-involved pipeline.
The beneficial effects of the utility model reside in that:
1. the integration of parts such as electric heating wires, sodium leakage detection wires and thermocouples in the fast reactor sodium-involved pipelines and equipment systems and the heat insulation structure module is realized, and the modularized design of the fast reactor high-temperature sodium pipeline integrated heat insulation structure can be realized.
2. The installation construction and the subsequent maintenance operation can be simplified, the overall cost is reduced, and the comprehensive economic benefit is improved.
Drawings
FIG. 1 is a schematic view of an electrically heated insulating block according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the electric heating wire installed on the heat preservation box according to the embodiment of the present invention;
FIG. 3 is a schematic plan view of the electric heating wire installed on the thermal insulation box according to the embodiment of the present invention;
FIG. 4 is a schematic view of a quick connector according to an embodiment of the present invention;
FIG. 5 is a schematic view of a Na leakage detection block according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of the installation of the sodium leak wire on the thermal insulation box according to the embodiment of the present invention;
FIG. 7 is a schematic plan view of the installation of the sodium leak wire on the thermal insulation box according to the embodiment of the present invention;
FIG. 8 is a cross-sectional view of a sodium leak detection and retention block according to an embodiment of the present invention;
FIG. 9 is a schematic view of a temperature measuring and insulating block according to an embodiment of the present invention;
FIG. 10 is an external perspective view of a thermometric insulation block according to an embodiment of the present invention;
FIG. 11 is a schematic view of a thermocouple according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of the circuit connections of the block according to the embodiment of the present invention (the electrically heated block and the sodium leakage detection block disposed on the horizontal pipe);
in the figure: 1-quick hasp, 2-sodium leakage detection wire, 3-thermocouple temperature measurement end, 4-electric heating wire, 5-side groove of heat preservation box body, 6-quick connector, 7-heat preservation box, 8-heat preservation box outer wall, 9-heat preservation box inner wall, 10-sodium-involved pipeline, 11-welding spot, 12-stainless steel metal foil, 13-thermocouple, 14-thermocouple cold end, 15-nut, 16-strong spring, 17-positioning ring, 18-weak spring, 19-first fastening nut, 20-first elastic gasket, 21-hollow bolt, 22-heat conduction block, 23-bolt, 24-second fastening nut, 25-second elastic gasket and 26-cable wiring bin.
Detailed Description
The invention is further described with reference to the following figures and examples.
The utility model provides a pair of insulating block of integrated electrical heating, temperature measurement and sodium leakage detection function for the heat preservation and the companion heat of sodium-cooled fast reactor's sodium pipeline 10 that wades specifically divide into three kinds of types of electrical heating insulating block, sodium leakage detection insulating block, temperature measurement insulating block.
Electric heating heat preservation block
As shown in fig. 1, 2 and 3, the electrical heating insulation block comprises a plurality of insulation boxes 7 detachably spliced and attached to a sodium-involved pipeline 10, insulation materials are filled in the insulation boxes 7, wherein two or more insulation boxes 7 correspondingly installed form an annular insulation layer; an electric heating wire 4 is arranged on the outer surface of the inner wall 9 of the heat preservation box 7 of the heat preservation box, and a quick joint 6 connected with the electric heating wire 4 and the sodium leakage detection wire 2 is arranged on the outer surface of the outer wall 8 of the heat preservation box 7 of the heat preservation box and used for providing power for the electric heating wire 4. The inner wall 9 of the heat preservation box refers to one side of the heat preservation box 7 close to the sodium-involved pipeline 10, and the outer wall 8 of the heat preservation box refers to one side of the heat preservation box 7 far away from the sodium-involved pipeline 10.
The electric heating wire 4 consists of a double-core armored electric heating wire (namely a heating section of the electric heating wire 4), a cold end joint and a cold end power line (namely an internal working section of the electric heating wire 4), and the cold end power line is connected with an independent power supply joint; the heating sections of the electric heating wires 4 are densely distributed on the outer surface of the inner wall 9 of the heat preservation box at certain intervals (other laying directions or forms can be adopted according to equipment requirements); the heating section of the electric heating wire 4 is fixed on the outer surface of the inner wall 9 of the heat preservation box through the stainless steel metal foil 12 in a spot welding mode, and the inner working section is spot-welded on the inner surface of the inner wall 9 of the heat preservation box according to the principle of proximity; two ends of a heating section of the electric heating wire 4 penetrate into the inner side of the inner wall 9 of the heat preservation box and are connected with an internal working section through a cold end joint, the internal working section of the electric heating wire 4 connects two poles of the double-core armored electric heating wire to the quick joint 6 through a power supply joint on a cold end power line, and the arrangement direction of the electric heating wire 4 is determined according to the diameter of a pipe to be preserved and the length of the heat preservation box 7; the electric heating wire 4 can set the working temperature through the control cabinet, and can bear the temperature environment of 800 ℃ at most.
As shown in fig. 4, the quick coupling 6 is used as a terminal box for the electric heating wire 4, and also as a terminal port for the internal connection device of the whole thermal insulation block and an external power supply line or a detection line, and comprises a second fastening nut 24, a second elastic gasket 25, a cable connection cabin 26 and the like; the quick connector 6 is a multi-hole connector (for example, a 5-hole connector), wherein two jacks are connected with the electric heating wire 4 and used as power supply jacks; one jack in the middle is used as a jack for ground wire protection required by the whole heat preservation block; because the heat preservation boxes 7 are in two HALF shapes, two quick joints 6 are arranged on each heat preservation box 7 along the axial direction of the sodium-involved pipeline 10, and the quick joints 6 on the two heat preservation boxes 7 which are annularly and correspondingly connected are close to the same lap joint; the cable lines at the same positions of the two quick connectors 6 on each heat preservation box 7 are connected, so that the connection of external wiring is facilitated.
The heat-insulating block has single-block detachability, and does not influence the heat preservation and the heat tracing of other heat-insulating blocks after the heat-insulating block is removed.
The heat preservation box 7 is stainless steel, adopts the HALF shape, and the surface of the heat preservation box outer wall 8 of heat preservation box 7 sets up quick hasp 1, and quick hasp 1 is located the interconnect's of two adjacent heat preservation boxes 7 edge.
Sodium leakage detection heat preservation block
As shown in fig. 5, 6, 7 and 8, the sodium leak detection heat-insulating block is configured by adding the sodium leak detection wire 2 to the electrically heated heat-insulating block. The sodium leakage detection wire 2 can find and alarm in time when the running medium sodium in the sodium-involved pipeline 10 leaks. The outer surface of the inner wall 9 of the heat preservation box 7 of the sodium leakage detection heat preservation block is provided with a groove, the sodium leakage detection wire 2 is fixed in the groove through a stainless steel metal foil 12 in a spot welding mode, the sodium leakage detection wire 2 is not in contact with the electric heating wire 4, and a plurality of ceramic support rings are arranged on the outer surface of the inner wall 9 of the heat preservation box at intervals to help the sodium leakage detection wire 2 to be fixed. The internal working section of the sodium leakage detection wire 2 comprises a cold end connector and a cold end power line, and is fixed on the inner side of the inner wall 9 of the heat preservation box, and other parts are spot-welded inside the heat preservation box 7 according to the nearest principle. Two ends of the sodium leakage detection wire 2 penetrate out of the stainless steel shell of the heat preservation box 7 to be connected to the cold end joint, and an independent power supply joint is connected to the cold end power line and used for being connected to the quick joint 6. The quick connector 6 is also used as a port junction box of the sodium leakage detection wire 2, and two jacks in the quick connector 6 are connected with two poles of the sodium leakage detection wire 2 and used as power supply jacks thereof. The sodium leakage detection wire 2 is also connected with an external sodium leakage signal receiver through an external cable, so that the transmission of a sodium leakage signal is realized, and the sodium leakage detection wire is used for monitoring the leakage of sodium.
Temperature measuring and heat insulating block
As shown in fig. 9, 10 and 11, a temperature measuring and insulating block is formed by adding a thermocouple 13 to an electrically heated and insulating block. Thermocouple 13 (armoured thermocouple) mainly used realizes the survey to wading sodium pipeline 10 temperature, through holding ring 17, the nut 15, hollow bolt 21, first fastening nut 19 wears to establish on the heat preservation box outer wall 8 of heat preservation box 7, be equipped with strong spring 16 and weak spring 18 in nut 15 and the hollow bolt 21, thermocouple 13's thermocouple temperature measuring end 3 passes heat preservation box 7 and wears out from heat preservation box inner wall 9, still be equipped with heat conduction piece 22 on thermocouple temperature measuring end 3 for increase thermocouple temperature measuring end 3 and wading sodium pipeline 10's area of contact, heat conduction piece 22 and thermocouple temperature measuring end 3 pass through bolt 23 fastening together. The strong spring 16 and the weak spring 18 enable the thermocouple 13 to move axially within the hollow bolt 21, so that the thermocouple temperature measuring end 3 is tightly attached to the covered sodium-related pipe 10. Wherein the hollow bolt 21, the nut 15 and the first fastening nut 19 play a role of integral fixation; the positioning ring 17 is directly fixed on the thermocouple 13, the thermocouple 13 is accurately positioned by the cooperation of the strong spring and the weak spring, and the thermocouple temperature measuring end 3 of the thermocouple 13 can be ensured to be always tightly attached to the surface of the sodium-involved pipeline 10 when the sodium-involved pipeline vibrates. The thermocouple cold end 14 at the tail end of the thermocouple 13 is exposed outside the screw cap 15 and is connected with a temperature measuring signal wire.
In specific application, different types of corresponding heat preservation blocks can be arranged according to the actual conditions and requirements of the sodium-related pipeline 10. For example, for a horizontally arranged sodium-involved pipeline 10, the temperature measurement and insulation block is arranged above the sodium-involved pipeline 10, the sodium leakage detection and insulation block is arranged below the sodium-involved pipeline 10, and the sodium leakage detection wire 2 is arranged along the axial direction of the sodium-involved pipeline 10 and is close to the lowest position of the sodium-involved pipeline 10 (as shown in fig. 7 and 8), so that the leaked liquid sodium flows through the sodium leakage detection wire 2 to trigger an alarm; to the vertical sodium pipeline 10 that wades that sets up, the setting of sodium leak detection heat insulating block is in the bottom of wading sodium pipeline 10, and sodium leak detection silk 2 arranges along the circumference of wading sodium pipeline 10 to the liquid sodium that leaks flows through sodium leak detection silk 2 and triggers the warning.
The utility model can be manufactured by the following method: firstly, performing prerequisite inspection including design file, material preparation and the like, and then performing material blanking and shearing; the method comprises the steps of drilling holes at required positions, assembling and welding all panels (except the panels) to form a shell of a heat insulation block, laying an electric heating wire and a sodium leakage detection wire at the required positions, then uniformly filling heat insulation materials in the shell, installing a thermocouple, and then packaging and fixing the outer panels. And after the assembly is finished, fixing the quick hasp of the heat preservation box and the like. The utility model discloses install above-mentioned heat preservation box on equipment surface as required, each interblock is connected fixedly through quick hasp, is connected its electric heating wire, sodium leakage detection silk's cold junction power cord joint and switch board, connects temperature measurement signal line switch board, treats to debug and can let it get into operating condition as required after possessing the operating condition.
The device of the present invention is not limited to the specific embodiments described in the embodiments, and those skilled in the art can obtain other embodiments according to the technical solution of the present invention, which also belongs to the technical innovation scope of the present invention.
Claims (10)
1. The utility model provides a heat preservation piece for the heat preservation and the companion's heat that wade sodium pipeline (10) of sodium-cooled fast reactor, including the detachable concatenation adhere to wade heat preservation box (7) on sodium pipeline (10), heat preservation box (7) inside packing insulation material, characterized by: be equipped with electric heating wire (4) on the heat preservation box inner wall (9) surface of heat preservation box (7) the surface setting of the heat preservation box outer wall (8) of heat preservation box (7) is connected quick-operation joint (6) of electric heating wire (4) are used for doing electric heating wire (4) provide the power.
2. The insulating block of claim 1, wherein: the electric heating wires (4) are densely distributed on the outer surface of the inner wall (9) of the heat preservation box; the heating section of the electric heating wire (4) is fixed on the outer surface of the inner wall (9) of the heat preservation box through a stainless steel metal foil (12) in a spot welding manner, and the internal working section of the electric heating wire (4) is fixed on the inner surface of the inner wall (9) of the heat preservation box in a spot welding manner; two ends of the heating section of the electric heating wire (4) penetrate through the inner wall (9) of the heat preservation box to be connected with the internal working section, the heating section of the electric heating wire (4) adopts a double-core armored electric heating wire, and the internal working section of the electric heating wire (4) connects two poles of the double-core armored electric heating wire to the quick connector (6); the electric heating wire (4) can set the working temperature through the control cabinet, and can bear the temperature environment of 800 ℃ at most.
3. The insulating block of claim 2, wherein: the quick joint (6) is a porous joint, wherein two jacks are connected with the electric heating wire (4) and used as power supply jacks of the electric heating wire; one jack is used as a jack for ground wire protection required by the whole heat insulation block; two quick joints (6) are arranged on each heat preservation box (7) along the axial direction of the sodium-involved pipeline (10), and the quick joints (6) on the two heat preservation boxes (7) which are circumferentially and correspondingly connected are close to the same lap joint; and cable lines at the same positions of the two quick connectors (6) on each heat preservation box (7) are connected, so that external wiring connection is facilitated.
4. The insulating block of claim 3, wherein: the heat-insulating block has single-block detachability, and does not influence the heat preservation and the heat tracing of other heat-insulating blocks after the heat-insulating block is detached.
5. The insulating block of claim 4, wherein: the heat preservation box (7) is made of stainless steel materials and adopts an HALF shape, the outer surface of the outer wall (8) of the heat preservation box (7) is provided with a quick hasp (1), and the quick hasp (1) is positioned at the edges of the adjacent two heat preservation boxes (7) which are connected with each other.
6. The insulating block of claim 5, wherein: a sodium leakage detection wire (2) is also arranged on the outer surface of the inner wall (9) of the heat preservation box (7); a groove is formed in the outer surface of the inner wall (9) of the heat preservation box (7), and the sodium leakage detection wire (2) is fixed in the groove through a stainless steel metal foil (12) in a spot welding mode and is not in contact with the electric heating wire (4); two jacks on the quick connector (6) are connected with two poles of the sodium leakage detection wire (2) and used as power supply jacks; the sodium leakage detection wire (2) is also connected with an external sodium leakage signal receiver through an external cable, so that the transmission of a sodium leakage signal is realized.
7. The insulating block of claim 6, wherein: the sodium leakage detection wire (2) is further fixed in the groove through a plurality of ceramic support rings arranged at intervals.
8. The insulating block of claim 5, wherein: a thermocouple (13) is arranged on the heat preservation box (7), the thermocouple (13) penetrates through the outer wall (8) of the heat preservation box (7) through a positioning ring (17), a screw cap (15), a hollow bolt (21) and a first fastening nut (19), and a thermocouple temperature measuring end (3) at the bottom end of the thermocouple (13) penetrates through the heat preservation box (7) and penetrates out of the inner wall (9) of the heat preservation box; the thermocouple temperature measuring device is characterized in that a nut (15) and a hollow bolt (21) are internally provided with a strong spring (16) and a weak spring (18), so that the thermocouple temperature measuring end (3) can be tightly attached to a sodium-involved pipeline (10) when the sodium-involved pipeline (10) vibrates.
9. The insulating block of claim 8, wherein: the thermocouple (13) is an armored thermocouple.
10. The insulating block of claim 8, wherein: the thermocouple temperature measuring end (3) is further provided with a heat conducting block (22) for increasing the contact area of the thermocouple temperature measuring end (3) and the sodium-involved pipeline (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036910.3U CN209839494U (en) | 2019-01-09 | 2019-01-09 | Heat insulation block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036910.3U CN209839494U (en) | 2019-01-09 | 2019-01-09 | Heat insulation block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209839494U true CN209839494U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920036910.3U Active CN209839494U (en) | 2019-01-09 | 2019-01-09 | Heat insulation block |
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| CN (1) | CN209839494U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681724A (en) * | 2019-01-09 | 2019-04-26 | 中国原子能科学研究院 | A kind of heat insulating block |
-
2019
- 2019-01-09 CN CN201920036910.3U patent/CN209839494U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681724A (en) * | 2019-01-09 | 2019-04-26 | 中国原子能科学研究院 | A kind of heat insulating block |
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