Thermocouple structure for spent fuel transportation container
By designing a thermocouple structure that is directly in contact with the inner wall of the cylinder in the spent fuel transport container, the problem of probe detection error in the prior art is solved, and the stability and protection of the thermocouple wire are improved through the support and limiting mechanism, thereby realizing the More accurate temperature detection.
Patent Information
- Application Number
- CN202411350835.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-01-03
AI Technical Summary
The probe used in the existing spent fuel transport containers to detect the heat dissipation effect of the cylinder actually detects the temperature of the bolt, not the temperature of the cylinder, resulting in errors in the detection result.
A thermocouple structure for spent fuel transport container is designed, including a base installed on the top of the connecting plate, a moving block slidingly arranged in the storage tank, a temperature measuring end and a thermocouple wire, and the ceramic tube is tightened by a high temperature resistance. Spring drive ensures that the temperature measuring end is directly in contact with the inner wall of the cylinder to reduce errors.
By directly contacting the inner wall of the cylinder, detection errors are reduced, and the fixing and protection of thermocouple wires are improved through the support mechanism and the limiting mechanism, reducing the possibility of high-temperature burning and regression.
Smart Images
Figure CN119245852A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of thermocouples, and in particular to a thermocouple structure for a spent fuel transport container. Background Art
[0002] At present, thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments). The appearance of various thermocouples is often very different due to needs, but their basic structure is roughly the same. They are usually composed of main parts such as hot electrodes, insulating sleeve protection tubes and junction boxes, and are usually used in conjunction with display instruments, recording instruments and electronic regulators.
[0003] The spent fuel transport container in the prior art, such as Figure 1 As shown, it generally includes a cylinder 1 and a hanging basket 2 arranged in the closed cylinder 1, the upper end of the cylinder 1 is sealed with an upper end shielding cover 11, the lower end of the cylinder 1 is sealed with a lower end shielding cover 12, and a storage sleeve 3 for storing spent fuel assemblies is placed inside the hanging basket 2; the hanging basket 2 is composed of stacked support plates 21 and heat conducting plates 22, the support plates 21 and the heat conducting plates 22 are parallel and spaced apart, and the support plates 21 and the heat conducting plates 22 are connected in series through a second connecting rod.
[0004] In order to detect the heat dissipation effect of the cylinder 1 in the prior art, a connecting plate 211 is generally installed on the supporting plate 21, and a detection mechanism 4 is installed on the connecting plate 211, such as Figure 1 and Figure 2 As shown, the detection structure 4 includes a connecting block 41 installed on the top of the connecting plate 211, a contact block 42 fixed to the top of the connecting block 41, a bolt 43 threadedly connected to one side of the contact block 42, and a detection probe 44 fixed to the end of the bolt 43 away from the contact block 42; the contact block 42 abuts against the inner wall of the cylinder 1.
[0005] However, a bolt 43 is further provided between the detection probe 44 and the cylinder 1 , so the detection probe 44 actually directly detects the temperature of the bolt 43 instead of directly detecting the temperature of the cylinder 1 , which may easily cause errors in the detection results. Summary of the invention
[0006] In order to reduce the error in cylinder detection, the present application provides a thermocouple structure for a spent fuel transport container, which adopts the following technical solution:
[0007] A thermocouple structure for a spent fuel transport container comprises a base mounted on the top of a connecting plate, a receiving groove provided on a side of the base close to a cylinder, a moving block slidably arranged in the receiving groove, a temperature measuring terminal mounted on one end of the moving block close to the cylinder, a thermocouple wire mounted on an end of the temperature measuring terminal away from the cylinder, and a ceramic tube sleeved on the moving block; the ceramic tube is slidably connected to the inner wall of the receiving groove, a high temperature resistant clamping spring is arranged in the receiving groove, one end of the clamping spring away from the temperature measuring terminal abuts against the inner wall of the end of the receiving groove away from the cylinder, the other end of the clamping spring abuts against the end of the ceramic tube away from the temperature measuring terminal, and the end of the thermocouple wire away from the temperature measuring terminal sequentially passes through the moving block and the receiving groove.
[0008] When it is necessary to inspect the inner wall of the cylinder, first move the moving block toward the receiving groove. The movement of the moving block drives the ceramic tube to move, and the movement of the ceramic tube presses the clamping spring. Then install the base to the appropriate position on the top of the connecting plate. At this time, the temperature measuring end can be in contact with the inner wall of the cylinder under the action of the clamping spring, so that the inner wall of the cylinder can be inspected. In summary, by adopting the above technical scheme, the temperature measuring end can be directly in contact with the inner wall of the cylinder, thereby reducing the error of cylinder detection.
[0009] Optionally, a fixing component for fixing the thermocouple wire is installed at one end of the base away from the temperature measuring end.
[0010] By adopting the above technical solution, the fixing assembly is provided, which facilitates the fixing of the thermocouple wire.
[0011] Optionally, the fixing assembly includes a high-temperature resistant positioning block installed on one end of the base away from the temperature measuring end, a through hole opened in the positioning block for the thermocouple wire to pass through, and a fastening screw threadedly connected to the side wall of the through hole; one end of the fastening screw abuts against the side wall of the thermocouple wire.
[0012] By adopting the above technical solution, when the thermocouple wire needs to be fixed, it only needs to tighten the fastening screw.
[0013] Optionally, a heat-insulating plug-in plate is fixedly connected to the bottom of the base, a first mounting groove is provided on the top of the connecting plate, a heat-insulating plate is installed in the first mounting groove, a second mounting groove is provided in the heat-insulating plate, a socket for plugging the plug-in plate is provided on the top of the second mounting groove, and a limiting mechanism for limiting the plug-in plate is installed in the second mounting groove.
[0014] When the base needs to be installed, the base is first moved to allow the plug-in board to be plugged into the socket, and then the plug-in board is limited by the limiting mechanism, so that the base can be installed; in summary, the above technical solution is adopted to facilitate the installation of the base.
[0015] Optionally, the limiting mechanism includes a first dovetail groove opened on the top wall of the second mounting groove, a first dovetail block slidably connected to the first dovetail groove, a first spring fixedly connected to one end of the first dovetail block, and a limiting plate fixedly connected to the bottom of the first dovetail block; a limiting groove is opened on the side of the plug plate close to the limiting plate, one end of the limiting plate is inserted into the limiting groove and is provided with a first inclined surface, and the first inclined surface matches one side of the plug plate; one end of the first spring away from the first dovetail block is fixedly connected to the inner wall of the first dovetail groove away from the plug plate; a third mounting groove is opened on the top wall of the second mounting groove, and a pushing mechanism for separating the limiting plate from the limiting groove is installed in the third mounting groove.
[0016] By adopting the above technical solution, when the plug board is plugged into the plug hole, the plug board drives the limit plate to move in the direction away from the plug board under the action of the first inclined surface, and the movement of the limit plate in the direction away from the plug board drives the first dovetail block to move in the direction away from the plug board, and the movement of the first dovetail block presses the first spring; when the plug board is plugged into the plug hole, the first dovetail block drives the limit plate to be plugged into the limit groove under the action of the first spring, so that the plug board can be limited; in summary, the set limiting mechanism is convenient for limiting the plug board.
[0017] The cam is an assembly made of a plurality of gears, and the plurality of gears are connected to each other with a plurality of gears, and the plurality of gears are connected to each other with a plurality of gears.
[0018] By adopting the above technical scheme, when it is necessary to separate the limit plate from the limit groove, first drive the countersunk screw to rotate through the tool, the countersunk screw rotates to drive the movable plate to move, the movable plate moves to drive the movable rod to move, at this time the movable rod drives the vertical tube to rotate under the action of the spiral block and the spiral groove, the vertical tube rotation drives the gear to rotate, the gear rotation drives the rack to move in the direction close to the abutment block, the rack moves in the direction of the abutment block to drive the abutment block to move in the direction away from the plug plate, the abutment block moves in the direction away from the plug plate to drive the limit plate to move in the direction away from the plug plate, thereby the limit plate can be separated from the limit groove; in summary, the set pushing mechanism facilitates the separation of the limit plate from the limit groove.
[0019] Optionally, one end of the positioning block away from the base is threadedly connected to a connecting pipe, and one end of the connecting pipe away from the positioning block is fixedly connected to a high-temperature resistant soft protective sleeve, and the soft protective sleeve is sleeved on the thermocouple wire; a supporting mechanism for supporting the soft protective sleeve is installed in the second mounting groove.
[0020] By adopting the above technical solution, the provided connecting pipe facilitates the connection of the soft protective sleeve with the positioning block; the provided soft protective sleeve facilitates the protection of the thermocouple wire.
[0021] Optionally, the supporting mechanism includes a rotating shaft rotatably connected to the inner wall of the second mounting groove, a rotating plate sleeved and fixed on the rotating shaft, a plurality of return springs fixed to the bottom of the rotating plate, a first through hole opened in the top wall of the second mounting groove, a supporting rod vertically slidably connected to the first through hole, and an arc-shaped plate fixed to the top of the supporting rod; the bottom of the plug plate can abut against the top of one end of the rotating plate, and one end of each return spring away from the rotating plate is fixed to the bottom of the second mounting groove; the bottom of the supporting rod is hinged with a first connecting rod, and one end of the first connecting rod away from the supporting rod is hinged to the top of the rotating plate; the soft protective cover can fall into the groove of the arc-shaped plate.
[0022] By adopting the above technical solution, when the plug board is plugged into the socket, the bottom of the plug board drives the rotating plate to rotate, and then the rotating plate drives the support rod to move upward under the action of the first connecting rod. The upward movement of the support rod drives the arc plate to move upward, and the upward movement of the arc plate can support the soft protective cover; in summary, the provided support mechanism is convenient for supporting the soft protective cover, thereby reducing the possibility of the thermocouple wire being burned by high temperature.
[0023] Optionally, a transverse plate is fixedly connected to the inner wall of the second mounting groove, and a blocking mechanism for blocking one side of the moving block is installed on the transverse plate.
[0024] By adopting the above technical solution, the blocking mechanism is arranged, which can prevent the temperature measuring end from retreating when elastic fatigue occurs in the pressing spring, thereby further reducing the measurement error of the cylinder.
[0025] Optionally, the blocking mechanism includes a second dovetail groove opened at the top of the cross plate, a second dovetail block slidably connected to the second dovetail groove, a second spring fixedly connected to one end of the second dovetail block, and a slide plate fixedly connected to the top of the second dovetail block; the end of the second spring away from the second dovetail block is fixedly connected to the inner wall of one end of the second dovetail groove; the end of the slide plate close to the plug plate is provided with a second inclined surface, and the second inclined surface matches one side of the plug plate; the top wall of the second mounting groove is provided with a second through hole, and a baffle is vertically slidably connected in the second through hole; a second connecting rod is hinged between the baffle plate and the slide plate; the baffle plate includes a sleeve, a block vertically slidably connected to the inner cavity of the sleeve, and a third spring fixedly connected to the bottom of the block, the end of the third spring away from the block is fixedly connected to the bottom of the sleeve, and the block can abut against one side of the moving block.
[0026] By adopting the above technical solution, when the plug board is plugged into the socket, the plug board drives the slide board to move under the action of the second inclined surface, and then the slide board drives the baffle to move upward under the action of the second connecting rod, thereby blocking the moving block and reducing the possibility of the temperature measuring end retreating.
[0027] In summary, the present application includes at least one of the following beneficial technical effects:
[0028] 1. When it is necessary to detect the inner wall of the cylinder, first move the moving block toward the receiving groove, the movement of the moving block drives the ceramic tube to move, and the movement of the ceramic tube presses the abutting spring; then install the base to the appropriate position on the top of the connecting plate, at this time, the temperature measuring end can abut against the inner wall of the cylinder under the action of the abutting spring, so that the inner wall of the cylinder can be detected; in summary, by adopting the above technical solution, the temperature measuring end can directly contact the inner wall of the cylinder, thereby reducing the error of cylinder detection;
[0029] 2. When the plug board is plugged into the socket, the bottom of the plug board drives the rotating plate to rotate, and then the rotating plate drives the support rod to move upward under the action of the first connecting rod, and the upward movement of the support rod drives the arc plate to move upward, and the upward movement of the arc plate can support the soft protective cover; In summary, the support mechanism is provided to facilitate the support of the soft protective cover, thereby reducing the possibility of the thermocouple wire being burned by high temperature;
[0030] 3. When the plug board is plugged into the socket, the plug board drives the slide board to move under the action of the second inclined surface, and then the slide board drives the baffle to move upward under the action of the second connecting rod, thereby blocking the moving block, thereby reducing the possibility of the temperature measuring end retreating. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a background technology figure.
[0032] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;
[0033] Figure 3 It is a schematic diagram of the overall structure of Example 1 of the present application.
[0034] Figure 4 yes Figure 3 A magnified schematic diagram of point B in the middle.
[0035] Figure 5 It is a structural schematic diagram highlighting the internal structure of the base in Example 1 of the present application.
[0036] Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the present application.
[0037] Figure 7 It is a structural schematic diagram of the highlighting limit mechanism in the second embodiment of the present application.
[0038] Figure 8 It is a structural schematic diagram highlighting the driving mechanism in the second embodiment of the present application.
[0039] Fig. 9 It is a structural schematic diagram highlighting the spiral block and the spiral groove in the second embodiment of the present application.
[0040] Fig.10 It is a structural schematic diagram highlighting the blocking mechanism in the second embodiment of the present application.
[0041] 1. Cylinder; 11. Upper shielding cover; 12. Lower shielding cover; 2. Hanging basket; 21. Support plate; 211. Connecting plate; 212. First mounting slot; 22. Heat conducting plate; 23. Heat insulating plate; 231. Second mounting slot; 232. Insertion hole; 233. Third mounting slot; 24. Cross plate; 3. Storage sleeve; 4. Detection structure; 41. Connecting block; 42. Contact block; 43. Bolt; 44. Detection probe; 5. Base; 51. Accommodating slot; 52. Moving block; 53. Temperature measuring end; 54. Thermocouple wire; 55. Ceramic tube; 56. Retaining spring; 57. Fixing assembly; 571. Positioning block; 572. Perforation; 573. Fastening screw; 58. Insertion plate; 59. Connecting pipe; 591. Soft protective cover; 6. Limiting mechanism; 61. First dovetail groove; 62. The first dovetail block; 63, the first spring; 64, the limit plate; 641, the first inclined surface; 65, the limit groove; 7, the pushing mechanism; 71, the countersunk screw; 72, the guide rod; 73, the moving plate; 74, the moving rod; 741, the spiral block; 75, the vertical tube; 751, the spiral groove; 76, the gear; 77, the sliding sleeve; 78, the rack; 79, the abutment block; 8, the supporting mechanism; 81, the rotating shaft; 82, the rotating plate; 83, the reset spring; 84, the first through hole; 85, the supporting rod; 86, the arc plate; 87, the second connecting rod; 9, the blocking mechanism; 91, the second dovetail groove; 92, the second dovetail block; 93, the second spring; 94, the slide plate; 941, the second inclined surface; 95, the second through hole; 96, the baffle; 961, the sleeve; 962, the block; 963, the third spring; 97, the second connecting rod. DETAILED DESCRIPTION
[0042] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.
[0043] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0044] Example 1: This application example discloses a thermocouple structure for a spent fuel transport container, referring to Figure 3-Figure 5, including a base 5 installed on the top of the connecting plate 21, a receiving groove 51 opened on the side of the base 5 close to the cylinder 1, a moving block 52 slidably arranged in the receiving groove 51 along the length direction of the connecting plate 211, a temperature measuring terminal 53 installed on the end of the moving block 52 close to the cylinder 1, a thermocouple wire 54 installed on the end of the temperature measuring terminal 53 away from the cylinder 1, and a ceramic tube 55 sleeved on the moving block 52; the ceramic tube 55 is slidably connected to the inner wall of the receiving groove 51 along the length direction of the connecting plate 211, and a high-temperature resistant clamping spring 56 is arranged in the receiving groove 51. The clamping spring 56 is arranged along the length direction of the connecting plate 211, and one end of the clamping spring 56 away from the temperature measuring terminal 53 abuts against the inner wall of the end of the receiving groove 51 away from the cylinder 1, and the other end of the clamping spring 56 abuts against the end of the ceramic tube 55 away from the temperature measuring terminal 53, and the end of the thermocouple wire 54 away from the temperature measuring terminal 53 passes through the moving block 52 and the receiving groove 51 in sequence. When it is necessary to inspect the inner wall of the cylinder 1, first move the moving block 52 toward the direction close to the accommodating groove 51. The movement of the moving block 52 drives the ceramic tube 55 to move, and the movement of the ceramic tube 55 presses the clamping spring 56; then install the base 5 to the appropriate position on the top of the connecting plate 211. At this time, the temperature measuring terminal 53 can be in contact with the inner wall of the cylinder 1 under the action of the clamping spring 56, so that the inner wall of the cylinder 1 can be inspected; in summary, by adopting the above technical scheme, the temperature measuring terminal 53 can be directly in contact with the inner wall of the cylinder 1, thereby reducing the error in the inspection of the cylinder 1.
[0045] Reference Figure 4 and Figure 5 A fixing assembly 57 for fixing the thermocouple wire 54 is installed at one end of the base 5 away from the temperature measuring terminal 53; the fixing assembly 57 is arranged to facilitate fixing the thermocouple wire 54. The fixing assembly 57 includes a high temperature resistant positioning block 571 installed at one end of the base 5 away from the temperature measuring terminal 53, a through hole 572 provided in the positioning block 571 for the thermocouple wire 54 to pass through, and a fastening screw 573 threadedly connected to the side wall of the through hole 572; one end of the fastening screw 573 abuts against the side wall of the thermocouple wire 54; when the thermocouple wire 54 needs to be fixed, the fastening screw 573 can be tightened.
[0046] Working principle: when it is necessary to inspect the inner wall of the cylinder 1, first move the moving block 52 toward the direction close to the accommodating groove 51. The movement of the moving block 52 drives the ceramic tube 55 to move, and the movement of the ceramic tube 55 presses the clamping spring 56; then install the base 5 to the appropriate position on the top of the connecting plate 211. At this time, the temperature measuring terminal 53 can be in contact with the inner wall of the cylinder 1 under the action of the clamping spring 56, so that the inner wall of the cylinder 1 can be inspected; in summary, by adopting the above technical scheme, the temperature measuring terminal 53 can be directly in contact with the inner wall of the cylinder 1, thereby reducing the error in the detection of the cylinder 1.
[0047] Example 2: This application example discloses a thermocouple structure for a spent fuel transport container, referring to Figure 6 and Figure 7 , the main difference from the first embodiment is that: a heat-insulating plug-in board 58 is fixed to the bottom of the base 5, a first mounting groove 212 is provided on the top of the connecting plate 211, a heat-insulating board 23 is installed in the first mounting groove 212, a second mounting groove 231 is provided in the heat-insulating board 23, a plug-in hole 232 for plugging the plug-in board 58 is provided on the top of the second mounting groove 231, and a limiting mechanism 6 for limiting the plug-in board 58 is installed in the second mounting groove 231. When the base 5 needs to be installed, the plug-in board 58 is first plugged into the plug-in hole 232 by moving the base 5, and then the plug-in board 58 is limited by the limiting mechanism 6, so that the base 5 can be installed; in summary, by adopting the above technical solution, the base 5 is easy to install.
[0048] Reference Figure 6 and Figure 7 The limiting mechanism 6 includes a first dovetail groove 61 opened on the top wall of the second mounting groove 231, a first dovetail block 62 slidably connected to the first dovetail groove 61 along the length direction of the heat insulation board 23, a first spring 63 fixedly connected to one end of the first dovetail block 62, and a limiting plate 64 fixedly connected to the bottom of the first dovetail block 62; a limiting groove 65 is opened on the side of the plug plate 58 close to the limiting plate 64, one end of the limiting plate 64 is inserted into the limiting groove 65 and is provided with a first inclined surface 641, and the first inclined surface 641 matches one side of the plug plate 58; the first spring 63 is arranged along the length direction of the heat insulation board 23, and one end of the first spring 63 away from the first dovetail block 62 is fixedly connected to the inner wall of one end of the first dovetail groove 61 away from the plug plate 58; the top wall of the second mounting groove 231 is opened with a third mounting groove 233, and a pushing mechanism 7 for separating the limiting plate 64 from the limiting groove 65 is installed in the third mounting groove 233. When the plug plate 58 is inserted into the socket 232, the plug plate 58 drives the limit plate 64 to move away from the plug plate 58 under the action of the first inclined surface 641. The limit plate 64 moves away from the plug plate 58 and drives the first dovetail block 62 to move away from the plug plate 58. The first dovetail block 62 moves to press the first spring 63. When the plug plate 58 is inserted into the socket 232, the first dovetail block 62 drives the limit plate 64 to be inserted into the limit groove 65 under the action of the first spring 63, so that the plug plate 58 can be limited. In summary, the setting of the limit mechanism 6 is convenient for limiting the plug plate 58.
[0049] Reference Figure 7-Figure 9The pushing mechanism 7 includes a countersunk screw 71 vertically rotatably connected to the third mounting groove 233 through a bearing, a guide rod 72 vertically fixed to the top wall of the third mounting groove 233, a moving plate 73 threadedly connected to the countersunk screw 71 and vertically slidably connected to the guide rod 72, a moving rod 74 fixed to the bottom of the moving plate 73, a vertical pipe 75 vertically rotatably connected to the inner wall of the third mounting groove 233 through a bearing, a gear 76 sleeved and fixed to the outer wall of the vertical pipe 75, a sliding sleeve 77 fixed to the inner wall of the third mounting groove 233, and a gear 76 sleeved and fixed to the outer wall of the vertical pipe 75, and a sliding sleeve 77 fixed to the inner wall of the third mounting groove 233 and a gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the outer wall of the gear 76 sleeved and fixed to the inner ... The guide rod 72 penetrates the movable plate 73; the outer wall of the movable rod 74 is fixedly connected with a plurality of spiral blocks 741 in sequence along its circumference, and the inner wall of the vertical pipe 75 is provided with a plurality of spiral grooves 751 in sequence along its circumference, and the plurality of spiral blocks 741 are matched with the plurality of spiral grooves 751 in a one-to-one correspondence; the gear 76 is meshed with the rack 78; the end of the limit plate 64 away from the plug plate 58 is fixedly connected with the abutment block 79, and one end of the rack 78 abuts against the side of the abutment block 79 close to the plug plate 58. When it is necessary to separate the limit plate 64 from the limit groove 65, first drive the countersunk screw 71 to rotate through the tool, the countersunk screw 71 rotates to drive the moving plate 73 to move, and the moving plate 73 moves to drive the moving rod 74 to move. At this time, the moving rod 74 drives the vertical tube 75 to rotate under the action of the spiral block 741 and the spiral groove 751, and the vertical tube 75 rotates to drive the gear 76 to rotate, and the gear 76 rotates to drive the rack 78 to move in the direction close to the abutment block 79, and the rack 78 moves in the direction of the abutment block 79 to drive the abutment block 79 to move in the direction away from the plug plate 58, and the abutment block 79 moves in the direction away from the plug plate 58, driving the limit plate 64 to move in the direction away from the plug plate 58, thereby separating the limit plate 64 from the limit groove 65; in summary, the setting of the pushing mechanism 7 facilitates the separation of the limit plate 64 from the limit groove 65.
[0050] Reference Figure 6 The end of the positioning block 571 away from the base 5 is threadedly connected with a connecting pipe 59, and the end of the connecting pipe 59 away from the positioning block 571 is fixedly connected with a high temperature resistant soft protective sleeve 591, and the soft protective sleeve 591 is sleeved on the thermocouple wire 54; the second installation groove 231 is installed with a supporting mechanism 8 for supporting the soft protective sleeve 591. The connecting pipe 59 is provided to facilitate the connection of the soft protective sleeve 591 with the positioning block 571; the soft protective sleeve 591 is provided to facilitate the protection of the thermocouple wire 54.
[0051] Reference Figure 6The supporting mechanism 8 includes a rotating shaft 81 horizontally rotatably connected to the inner wall of the second mounting groove 231 through a bearing, a rotating plate 82 sleeved and fixed on the rotating shaft 81, a plurality of return springs 83 vertically fixed to the bottom of the rotating plate 82, a first through hole 84 opened on the top wall of the second mounting groove 231, a supporting rod 85 vertically slidably connected to the first through hole 84, and an arc plate 86 fixed to the top of the supporting rod 85; the bottom of the insert plate 58 can abut against the top of one end of the rotating plate 82, and one end of each return spring 83 away from the rotating plate 82 is fixed to the bottom of the second mounting groove 231; the bottom of the supporting rod 85 is hinged with a first connecting rod 87, and one end of the first connecting rod 87 away from the supporting rod 85 is hinged to the top of the rotating plate 82; the soft protective cover 591 can fall into the groove of the arc plate 86. When the plug plate 58 is plugged into the socket 232, the bottom of the plug plate 58 drives the rotating plate 82 to rotate, and then the rotating plate 82 drives the support rod 85 to move upward under the action of the first connecting rod 87. The upward movement of the support rod 85 drives the arc plate 86 to move upward, and the upward movement of the arc plate 86 can support the soft protective cover 591. In summary, the support mechanism 8 is provided to facilitate the support of the soft protective cover 591, thereby reducing the possibility of the thermocouple wire 54 being burned by high temperature.
[0052] Reference Figure 6 and Fig. 9 The inner wall of the second mounting groove 231 is horizontally fixed with a transverse plate 24, and a blocking mechanism 9 is installed on the transverse plate 24 for blocking one side of the moving block 52. The blocking mechanism 9 is arranged to prevent the temperature measuring end 53 from retreating when the spring 56 is elastically fatigued, thereby further reducing the measurement error of the cylinder 1.
[0053] Reference Figure 6 and Fig. 9The blocking mechanism 9 includes a second dovetail groove 91 provided at the top of the horizontal plate 24, a second dovetail block 92 slidably connected to the second dovetail groove 91 along the length direction of the horizontal plate 24, a second spring 93 fixed to one end of the second dovetail block 92, and a slide plate 94 fixed to the top of the second dovetail block 92; the second spring 93 is arranged along the length direction of the horizontal plate 24, and one end of the second spring 93 away from the second dovetail block 92 is fixed to the inner wall of one end of the second dovetail groove 91; the end of the slide plate 94 close to the plug plate 58 is provided with a second inclined surface 941, and the second inclined surface 94 1 matches one side of the plug plate 58; the top wall of the second mounting groove 231 is provided with a second through hole 95, in which a baffle plate 96 is vertically slidably connected; a second connecting rod 97 is hinged between the baffle plate 96 and the slide plate 94; the baffle plate 96 includes a sleeve 961, a baffle block 962 vertically slidably connected to the inner cavity of the sleeve 961, and a third spring 963 vertically fixed to the bottom of the baffle block 962, one end of the third spring 963 away from the baffle block 962 is fixed to the bottom of the sleeve 961, and the baffle block 962 can abut against one side of the moving block 52. When the plug plate 58 is plugged into the socket 232, the plug plate 58 drives the slide plate 94 to move under the action of the second inclined surface 941, and then the slide plate 94 drives the baffle plate 96 to move upward under the action of the second connecting rod 97, so as to block the moving block 52, thereby reducing the possibility of the temperature measuring terminal 53 retreating.
[0054] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A thermocouple structure for a spent fuel transport container, characterized in that: The invention comprises a base (5) mounted on the top of a connecting plate (21), a receiving groove (51) provided on a side of the base (5) close to a cylinder (1), a moving block (52) slidably arranged in the receiving groove (51), a temperature measuring end (53) mounted on an end of the moving block (52) close to the cylinder (1), a thermocouple wire (54) mounted on an end of the temperature measuring end (53) far from the cylinder (1), and a ceramic tube (55) sleeved on the moving block (52); the ceramic tube (55) is slidably connected to the receiving groove The inner wall of the groove (51) is provided with a high temperature resistant pressing spring (56) in the receiving groove (51), one end of the pressing spring (56) away from the temperature measuring terminal (53) abuts against the inner wall of the receiving groove (51) away from the cylinder (1), and the other end of the pressing spring (56) abuts against the end of the ceramic tube (55) away from the temperature measuring terminal (53), and the end of the thermocouple wire (54) away from the temperature measuring terminal (53) passes through the moving block (52) and the receiving groove (51) in sequence.
2. A thermocouple structure for a spent fuel transport container according to claim 1, characterized in that: A fixing assembly (57) for fixing the thermocouple wire (54) is installed at one end of the base (5) away from the temperature measuring end (53).
3. A thermocouple structure for a spent fuel transport container according to claim 2, characterized in that: The fixing assembly (57) comprises a high temperature resistant positioning block (571) installed on one end of the base (5) away from the temperature measuring end (53), a through hole (572) provided in the positioning block (571) for the thermocouple wire (54) to pass through, and a fastening screw (573) threadedly connected to the side wall of the through hole (572); one end of the fastening screw (573) abuts against the side wall of the thermocouple wire (54).
4. A thermocouple structure for a spent fuel transport container according to claim 3, characterized in that: A heat-insulating plug board (58) is fixedly connected to the bottom of the base (5); a first mounting groove (212) is provided at the top of the plate (21); a heat-insulating plate (23) is installed in the first mounting groove (212); a second mounting groove (231) is provided in the heat-insulating plate (23); a plug hole (232) for plugging the plug board (58) is provided at the top of the second mounting groove (231); a limiting mechanism (6) for limiting the plug board (58) is installed in the second mounting groove (231).
5. A thermocouple structure for a spent fuel transport container according to claim 4, characterized in that: The limiting mechanism (6) comprises a first dovetail groove (61) provided on the top wall of the second mounting groove (231), a first dovetail block (62) slidably connected to the first dovetail groove (61), a first spring (63) fixedly connected to one end of the first dovetail block (62), and a limiting plate (64) fixedly connected to the bottom of the first dovetail block (62); a limiting groove (65) is provided on one side of the plug plate (58) close to the limiting plate (64), and one end of the limiting plate (64) is plugged into the limiting groove (65). A first inclined surface (641) is provided, and the first inclined surface (641) matches one side of the plug plate (58); one end of the first spring (63) away from the first dovetail block (62) is fixedly connected to the inner wall of one end of the first dovetail groove (61) away from the plug plate (58); the top wall of the second mounting groove (231) is provided with a third mounting groove (233), and a pushing mechanism (7) for separating the limiting plate (64) from the limiting groove (65) is installed in the third mounting groove (233).
6. A thermocouple structure for a spent fuel transport container according to claim 5, characterized in that: The pushing mechanism (7) comprises a countersunk screw (71) rotatably connected to the third mounting groove (233), a guide rod (72) fixedly connected to the top wall of the third mounting groove (233), a moving plate (73) threadedly connected to the countersunk screw (71) and slidably connected to the guide rod (72), a moving rod (74) fixedly connected to the bottom of the moving plate (73), a vertical tube (75) rotatably connected to the inner wall of the third mounting groove (233), a gear (76) sleeved and fixed to the outer wall of the vertical tube (75), a sliding sleeve (77) fixedly connected to the inner wall of the third mounting groove (233), and a rack (78) slidably connected to the sliding sleeve (77). The guide rod (72) passes through the movable plate (73); the outer wall of the movable rod (74) is fixedly connected with a plurality of spiral blocks (741) in sequence along its circumference, and the inner wall of the vertical tube (75) is opened with a plurality of spiral grooves (751) in sequence along its circumference, and the plurality of spiral blocks (741) are matched with the plurality of spiral grooves (751) in a one-to-one correspondence; the gear (76) is meshed with the rack (78); the end of the limit plate (64) away from the plug plate (58) is fixedly connected with an abutment block (79), and one end of the rack (78) abuts against the side of the abutment block (79) close to the plug plate (58).
7. A thermocouple structure for a spent fuel transport container according to claim 4, characterized in that: One end of the positioning block (571) away from the base (5) is threadedly connected to a connecting pipe (59); one end of the connecting pipe (59) away from the positioning block (571) is fixedly connected to a high-temperature resistant soft protective sleeve (591); the soft protective sleeve (591) is sleeved on the thermocouple wire (54); and a supporting mechanism (8) for supporting the soft protective sleeve (591) is installed in the second installation groove (231).
8. A thermocouple structure for a spent fuel transport container according to claim 7, characterized in that: The support mechanism (8) comprises a rotating shaft (81) rotatably connected to the inner wall of the second mounting groove (231), a rotating plate (82) sleeved and fixed on the rotating shaft (81), a plurality of return springs (83) fixed to the bottom of the rotating plate (82), a first through hole (84) opened on the top wall of the second mounting groove (231), a support rod (85) slidably connected to the first through hole (84) in the vertical direction, and an arc-shaped plate (86) fixed to the top of the support rod (85); The bottom of the plug plate (58) can abut against the top of one end of the rotating plate (82), and one end of each of the return springs (83) away from the rotating plate (82) is fixed to the bottom of the second mounting groove (231); the bottom of the support rod (85) is hinged with a first connecting rod (87), and one end of the first connecting rod (87) away from the support rod (85) is hinged to the top of the rotating plate (82); the soft protective cover (591) can fall into the groove of the arc plate (86).
9. A thermocouple structure for a spent fuel transport container according to claim 4, characterized in that: A transverse plate (24) is fixedly connected to the inner wall of the second installation groove (231), and a blocking mechanism (9) for blocking one side of the moving block (52) is installed on the transverse plate (24).
10. A thermocouple structure for a spent fuel transport container according to claim 9, characterized in that: The blocking mechanism (9) comprises a second dovetail groove (91) provided at the top of the transverse plate (24), a second dovetail block (92) slidably connected to the second dovetail groove (91), a second spring (93) fixedly connected to one end of the second dovetail block (92), and a slide plate (94) fixedly connected to the top of the second dovetail block (92); the end of the second spring (93) away from the second dovetail block (92) is fixedly connected to the inner wall of one end of the second dovetail groove (91); the end of the slide plate (94) close to the plug plate (58) is provided with a second inclined surface (941), and the second inclined surface (941) matches one side of the plug plate (58); the second A second through hole (95) is provided on the top wall of the mounting groove (231), and a baffle (96) is vertically slidably connected in the second through hole (95); a second connecting rod (97) is hinged between the baffle (96) and the slide plate (94); the baffle (96) comprises a sleeve (961), a baffle (962) vertically slidably connected to the inner cavity of the sleeve (961), and a third spring (963) fixed to the bottom of the baffle (962); one end of the third spring (963) away from the baffle (962) is fixed to the bottom of the sleeve (961), and the baffle (962) can abut against one side of the moving block (52).