CN114167171A - High-temperature fission chamber detection device and high-temperature fission chamber detection system - Google Patents
High-temperature fission chamber detection device and high-temperature fission chamber detection system Download PDFInfo
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Abstract
The embodiment of the application provides a high temperature fission chamber detection device and a high temperature fission chamber detection system, relates to the technical field of in-reactor detectors, and is used for solving the problems that the high temperature fission chamber detection system in the related technology is high in cost and not easy to move. The high-temperature fission chamber detection device provided by the embodiment of the application comprises an outer cylinder, a probe and a cable. The outer barrel comprises an extension section and an external section, the extension section is used for extending into the reactor, and a switching window is formed on the external section; the probe is arranged at the position corresponding to the reactor core in the extension section; the cable comprises a high-temperature-resistant cable and a common cable, wherein the high-temperature-resistant cable is positioned in the outer barrel, one end of the high-temperature-resistant cable is connected with the probe, the other end of the high-temperature-resistant cable extends to the switching window, the common cable and the high-temperature-resistant cable are connected at the switching window, and one end, far away from the high-temperature-resistant cable, of the common cable extends out of the outer barrel and is electrically connected with the signal processing device. The high-temperature fission chamber detection device provided by the embodiment of the application is used for detecting the neutron fluence rate.
Description
Technical Field
The application relates to the technical field of in-reactor detectors of reactors, in particular to a high-temperature fission chamber detection device and a high-temperature fission chamber detection system.
Background
The reactor neutron detector is an important safety device of a nuclear power station, is used for timely and accurately measuring the neutron fluence rate in the operation process of the reactor, and can be used for adjusting the insertion depth of a control rod and the concentration of a moderator according to the neutron fluence rate, so that the purposes of controlling the reactor power and safely operating are achieved. The high-temperature fission chamber detection system measures the neutron fluence rate by using a neutron fission method, neutrons and fissile nuclides are subjected to fission reaction to generate fission fragments, the fission fragments are ionized with a gas medium, and ionized ions are collected by a collecting electrode to generate signals.
The probe of the high-temperature fission chamber detection system is positioned in a reactor during working, the working environment temperature is high, the radiation dose is high, in order to stably transmit signals detected by the probe to a signal processing device outside the reactor, a high-temperature-resistant cable is used for transmitting the signals in the related technology, the high-temperature-resistant cable is arranged in an outer barrel, and the outer barrel provides an insulating channel and support for the high-temperature-resistant cable. However, the probe of the high temperature fission chamber detection system has a long distance from the signal processing device, which may result in a long length of the high temperature resistant cable, and may result in a long length of the outer sleeve for supporting the high temperature resistant cable, resulting in high cost and waste of materials. Moreover, the high-temperature-resistant cable is provided with a plurality of protective layers and shielding layers, so that the cable is high in hardness, heavy in weight, not easy to bend and high in cost, and the long high-temperature-resistant cable brings great difficulty to the moving operation of the high-temperature fission chamber detection system.
Disclosure of Invention
In view of this, embodiments of the present application provide a high temperature fission chamber detection device and a high temperature fission chamber detection system, so as to solve the problems that a high temperature fission chamber detection system in the related art is high in cost and is not easy to move.
In order to achieve the above object, a first aspect of the embodiments of the present application provides a high temperature fission chamber detecting device, which is characterized by comprising an outer barrel, a probe and a cable. The outer barrel comprises an extension section and an external section, the extension section is used for extending into the reactor, and a switching window is formed on the external section; the probe is arranged at the position corresponding to the reactor core in the extension section; the cable comprises a high-temperature-resistant cable and a common cable, wherein the high-temperature-resistant cable is positioned in the outer barrel, one end of the high-temperature-resistant cable is connected with the probe, the other end of the high-temperature-resistant cable extends to the switching window, the common cable and the high-temperature-resistant cable are connected at the switching window, and one end, far away from the high-temperature-resistant cable, of the common cable extends out of the outer barrel and is electrically connected with the signal processing device.
Furthermore, a plurality of switching windows are formed on the external section.
Further, a plurality of switching windows are distributed along the circumference of the external section.
Furthermore, the number of the switching windows is two, and the two switching windows are symmetrically arranged relative to the central axis of the outer cylinder.
Furthermore, the number of cables is a plurality, and a plurality of cables all extend along the urceolus extending direction, and the width of switching window along a plurality of cable horizontal is greater than a plurality of cable horizontal width.
Further, the switching window is rectangular.
Further, the high-temperature fission chamber detection device further comprises a cover plate, the cover plate is covered on the switching window, and the cover plate is detachably connected with the outer barrel.
Further, the cover plate and the through-connection window are detachably connected through a fastener.
Further, the cable also comprises a switching assembly, and the high-temperature-resistant cable and the common cable are connected through the switching assembly.
Further, the high-temperature-resistant cable and the common cable are fixed with the outer cylinder through the clamp.
Furthermore, a cable outlet is formed in the external section, and the common cable extends out of the outer barrel through the cable outlet.
Further, the external section is formed with the suspension flange near the one end of stretching into the section, and the suspension flange is used for being connected with the reactor to the messenger stretches into in the section stretches into the reactor.
In a second aspect of the embodiments of the present application, a high temperature fission chamber detection system is provided, which includes a signal processing device and the high temperature fission chamber detection device provided in the first aspect of the embodiments of the present application. The signal processing device is electrically connected with one end of the common cable, which is far away from the high-temperature-resistant cable, and is used for processing information detected by the probe.
The high temperature fission room detection device that this application embodiment provided, the environment that the section of stretching into is located is the internal environment of heap, and the temperature is higher, and the irradiation dose is great, and it is comparatively suitable to utilize high temperature resistant cable transmission signal. The external section is positioned outside the reactor. The temperature of the environment where the external section is located is room temperature, the irradiation dose is the dose level that people can go in and out, and common cables can be used for signal transmission. The setting of ordinary cable makes high temperature resistant cable needn't directly be connected with signal processing apparatus for high temperature resistant cable's length is shorter, can save the cost on the one hand, reduces the material loss, and on the other hand also is convenient for high temperature fission room detection device's removal. In the process of moving the high-temperature fission chamber detection device, the common cable can be firstly detached from the high-temperature fission chamber detection device through the switching window, and after the high-temperature fission chamber detection device is moved to a target position, the common cable is connected with the high-temperature-resistant cable through the switching window, so that the moving process is convenient. In addition, the flexibility of the common cable is relatively large, and the common cable can easily climb on the ground, the wall surface and the like after extending out of the outer cylinder, so that the common cable can extend for a long distance outside the outer cylinder to be connected with the signal processing device, and does not need to be supported by the longer outer cylinder, thereby being convenient for the movement of the high-temperature fission chamber detection device on one hand, and being beneficial to saving materials and reducing the cost on the other hand. Therefore, the high-temperature fission chamber detection device provided by the embodiment of the application has relatively low cost and is convenient to move.
Drawings
FIG. 1 is a schematic structural view of a high temperature fission chamber detecting device with a detachable cover plate in an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural diagram of a cover plate 4 according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an external segment according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an adapter assembly in an embodiment of the present application.
Reference numerals:
01-reactor roof; 1-outer cylinder; 11-an insertion section; 12-an external section; 121-switching window; 122-a first threaded hole; 123-groove; 124-a switching section; 125-tail section; 126-a lifting lug; 127-a cable outlet; 128-a suspension flange; 2-a probe; 3-a cable; 31-high temperature resistant cable; 32-ordinary cable; 33-a transition assembly; 31-a first cable connector; 32-a second cable connector; 33-a patching module; 4-cover plate; 41-second threaded hole.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The reactor neutron detector is an important safety device of a nuclear power station, is used for timely and accurately measuring the neutron fluence rate in the operation process of the reactor, and can be used for adjusting the insertion depth of a control rod and the concentration of a moderator according to the neutron fluence rate, so that the purposes of controlling the reactor power and safely operating are achieved. The high-temperature fission chamber detection system measures the neutron fluence rate by using a neutron fission method, neutrons and fissile nuclides are subjected to fission reaction to generate fission fragments, the fission fragments are ionized with a gas medium, and ionized ions are collected by a collecting electrode to generate signals.
The high temperature fission chamber detection system generally includes a high temperature fission chamber detection device and a signal processing device. The high-temperature fission chamber detection device comprises a probe, an outer cylinder and a high-temperature-resistant cable. The probe is located the reactor during operation, and operational environment temperature is higher and the radiation dose is stronger, in order to transmit the signal that the probe was surveyed to the signal processing device outside the reactor steadily, uses high temperature resistant cable transmission signal among the correlation technique to place high temperature resistant cable in the urceolus, the urceolus provides insulating passageway and support to high temperature resistant cable. However, the long distance between the probe and the signal processing device may result in a long length of the high temperature cable, and further a long length of the outer tube for supporting the high temperature cable, which causes high cost and waste of materials. Moreover, the high-temperature-resistant cable is provided with a plurality of protective layers and shielding layers, so that the cable is high in hardness, heavy in weight, not easy to bend and high in cost, and the long high-temperature-resistant cable brings great difficulty to operations such as moving and piling of the high-temperature fission chamber detection device. The reactor interior means a reactor vessel interior, and the reactor exterior means a reactor vessel exterior. The reactor core is located in the reactor vessel, and the probe extends into the reactor core when in operation.
In view of the above, referring to fig. 1 and fig. 2, an embodiment of the present application provides a high temperature fission chamber detection system, which includes a high temperature fission chamber detection device and a signal processing device. The signal processing device is used for processing information detected by the probe 2, and the signal processing device is electrically connected with one end of the high-temperature resistant cable 31 far away from the common cable 32 of the high-temperature fission chamber detection device. On the basis, in some embodiments, the signal processing device comprises a preamplifier and a secondary instrument, the preamplifier is electrically connected with one end of the common cable 32 of the high-temperature fission chamber detection device, which is far away from the high-temperature resistant cable 31, and the secondary instrument is electrically connected with the preamplifier. The preamplifier is used for amplifying the electric pulse signal from the high-temperature fission chamber detection device, and the secondary instrument is used for indicating, recording or integrating the detection result of the probe 2. In some embodiments, the high temperature fission chamber detection system further includes a computer electrically coupled to the secondary instrument.
Referring to fig. 1 and 2, a high temperature fission chamber detecting device provided by the embodiment of the present application includes an outer cylinder 1, a probe 2 and a cable 3. The outer barrel 1 comprises an extending section 11 and an external section 12, the extending section 11 is used for extending into the reactor, and a switching window 121 is formed in the external section 12. The probe 2 is arranged at a position corresponding to the core in the extension section 11. The cable 3 includes high temperature resistant cable 31 and ordinary cable 32, and high temperature resistant cable 31 is located urceolus 1, and its one end is connected with probe 2, and the other end extends to switching window 121 department, and ordinary cable 32 and high temperature cable 3 are connected at switching window 121 department, and the one end that ordinary cable 32 kept away from high temperature resistant cable 31 stretches out urceolus 1 for with the electric connection of signal processing device.
The high temperature fission room detection device that this application embodiment provided, the environment that stretches into section 11 is for piling the internal environment, and the temperature is higher, and the irradiation dose is great, and it is comparatively suitable to utilize high temperature resistant cable 31 transmission signal. The outboard section 12 is located outside the reactor. The temperature of the environment of the external section 12 is room temperature, the irradiation dose is a dose level which can be accessed by personnel, and a common cable 32 can be used for signal transmission. The arrangement of the common cable 32 enables the high-temperature-resistant cable 31 not to be directly connected with a signal processing device, so that the length of the high-temperature-resistant cable 31 is short, on one hand, the cost can be saved, the material loss is reduced, and on the other hand, the movement of the high-temperature fission chamber detection device is convenient. In the process of moving the high-temperature fission chamber detection device, the common cable 32 can be firstly detached from the high-temperature fission chamber detection device through the switching window 121, and after the high-temperature fission chamber detection device is moved to a target position, the common cable 32 is connected with the high-temperature resistant cable 31 through the switching window 121, so that the moving process is convenient. In addition, the flexibility of the common cable 32 is relatively large, and the common cable can easily climb on the ground, the wall surface and the like after extending out of the outer barrel 1, so that the common cable 32 can extend for a long distance outside the outer barrel 1 to be connected with a signal processing device without being supported by the long outer barrel 1, on one hand, the movement of the high-temperature fission chamber detection device is facilitated, and on the other hand, the material saving and the cost reduction are also facilitated. Therefore, the high-temperature fission chamber detection device provided by the embodiment of the application has relatively low cost and is convenient to move.
It is understood that the cable 3 does not include the ordinary cable 32, but only includes the high temperature resistant cable 31, that is, one end of the high temperature resistant cable 31 is connected with the probe 2, and the other end is connected with the signal processing device, and there are two design schemes. One is that the high temperature resistant cable 31 is supported by a longer outer cylinder 1 after extending out of the reactor, but the longer outer cylinder 1 is inconvenient to move and has higher cost; the other is that the high temperature resistant cable 31 extends out of the reactor and then extends out of the outer cylinder 1 and climbs on the ground or the wall surface, etc., but the long and bent high temperature resistant cable 31 can make the movement of the high temperature resistant cable 31 extremely difficult because the high temperature resistant cable 31 is rigid.
In addition, the arrangement of the ordinary cable 32 also facilitates the debugging work or troubleshooting work and the like by workers. Specifically, the worker may disconnect the high temperature resistant cable 31 and the normal cable 32 through the transit window 121, mount a device for debugging or a fault monitoring device, etc. on the high temperature resistant cable 31 or the normal cable 32, and perform debugging or troubleshooting according to a signal transmitted by the high temperature resistant cable 31 or the normal cable 32. The high-temperature-resistant cable 31 is high in rigidity and not easy to bend, the common cable 32 is low in rigidity and easy to bend, and the high-temperature-resistant cable 31 and the common cable 32 are used for transmitting signals, so that a worker can break the cable 3 relatively easily. It can be understood that, if the cable 3 only includes two segments of the high temperature resistant cable 31 connected to each other, and does not include the ordinary cable 32, the high temperature resistant cable 31 cannot be bent due to its high rigidity, and the operation of disconnecting the two segments of the high temperature resistant cable 31 is difficult.
It can be understood that the through-connection window 121 is used to communicate the inside and the outside of the outer tub 1, and a worker can disconnect and connect the high temperature resistant cable 31 or the general cable 32 through the through-connection window 121 without damaging the outer tub 1. In some embodiments, referring to fig. 1 and 2, the through-connection window 121 is formed at an end of the external segment 12 near the protruding segment 11. The structure is such that the length of the high temperature resistant cable 31 is small.
It should be noted that the external segment is located outside the reactor. In some embodiments, referring to fig. 1, reference numeral 01 is a reactor roof 01, a portion of the outer barrel 1 below the reactor roof 01 is an extending section 11, and a portion above the reactor is an external section 12.
In some embodiments, the high temperature resistant cable 31 is an armored cable. The armored cable has the characteristics of high temperature resistance, irradiation resistance and the like, and is suitable for signal transmission in a reactor. It should be noted that the ordinary cable 32 may be any cable without an armor layer, and the ordinary cable 32 has a larger flexibility, a lighter weight, a smaller volume and a lower cost compared to the armored cable. In some embodiments, the common cable 32 is a shielded flexible cable.
Further, referring to fig. 1 and 2, a plurality of through windows 121 are formed on the external segment 12. With such a structure, the worker can use the plurality of switching windows 121 to perform operations such as debugging and troubleshooting. Based thereon, in some embodiments, the plurality of relay windows 121 are evenly distributed along the circumference of the outboard section 12. With the adoption of the structure, the stress of the area between the plurality of adapter ports on the external section 12 is uniform, and the probe 2 and the cable 3 can be stably installed on the outer barrel 1. On this basis, in some embodiments, there are two adapting windows 121, and the two adapting windows 121 are symmetrically arranged relative to the central axis of the outer barrel 1. With the structure, the two switching windows 121 can be opened, so that the operation of debugging, troubleshooting and the like can be conveniently performed by the worker, and the strength and the rigidity of the outer barrel 1 cannot be greatly influenced.
In some other embodiments, the number of the cables 3 is multiple, the multiple cables 3 all extend along the extending direction of the outer barrel 1, the outer segment 12 is formed with multiple transit windows 121, each two transit windows 121 have a distance in the axial direction and the circumferential direction of the outer barrel 1, and one ends of the multiple associated high temperature resistant cables 31 far away from the core respectively extend to the corresponding transit windows 121. With the structure, the worker can debug the cables 3 through the switching windows 121, so that the worker can operate conveniently. Every two switching windows 121 have a distance along the axial direction and the circumferential direction of the outer cylinder 1, so that the rigidity and the strength of the outer cylinder 1 cannot be greatly influenced by the arrangement of the plurality of switching windows 121. On the basis, in some embodiments, the plurality of through-connection windows 121 are uniformly arranged in a spiral shape along the axial direction of the outer cylinder 1.
Referring to fig. 1 and 2, in some embodiments, the number of the cables 3 is multiple, the cables 3 all extend along the extending direction of the outer barrel 1, and the width of the through-connection window 121 along the transverse direction of the cables 3 is greater than the width of the cables 3 along the transverse direction. Structural style like this, the staff of being convenient for adjusts a plurality of cables 3.
Referring to fig. 1 and 2, in order to avoid the adaptor window 121 greatly affecting the strength and rigidity of the outer cylinder 1, in some embodiments, the length of the adaptor window 121 along the circumferential direction of the outer cylinder 1 is less than one fourth of the circumferential length of the outer cylinder 1. Preferably, in some embodiments, the length of the transfer window 121 along the circumferential direction of the outer cylinder 1 is one quarter of the circumferential length of the outer cylinder 1. With the adoption of the structure, on one hand, the operation such as debugging, troubleshooting and the like can be conveniently carried out by a worker, and on the other hand, the strength and the rigidity of the outer barrel 1 are not greatly influenced.
Referring to fig. 1 and 2, in order to avoid the great influence of the through-connection window 121 on the strength and rigidity of the outer cylinder 1, in some embodiments, the length of the through-connection window 121 along the axial direction of the outer cylinder 1 is 8cm to 20 cm. In such a structure, the switching window 121 can meet the requirement of human hand insertion, and the strength and rigidity of the outer cylinder 1 are not greatly affected.
Referring to fig. 1 and 2, in some embodiments, the through window 121 is rectangular. On this basis, in some embodiments, the corners of the transfer window 121 are rounded. Of course, in some other embodiments, the transfer window 121 may have a circular, oval, diamond, irregular shape, or the like.
Referring to fig. 1, 2 and 3, further, the high temperature fission chamber detecting device further includes a cover plate 4, the cover plate 4 is covered on the adapting window 121, and the cover plate 4 is detachably connected with the outer cylinder 1. With such a structure, the cover plate 4 can reduce the influence of the external environment on the components in the cartridge 1 through the through-connection window 121. When the worker needs to perform debugging and other work, the cover plate 4 can be detached from the outer barrel 1, and the debugging equipment can be inserted into the outer barrel 1 through the adapting window 121. After the debugging work of the staff is finished, the cover plate 4 can be covered on the opening, and the cover plate 4 is connected with the outer barrel 1, so that the parts in the outer barrel 1 are protected, and the interference of the external environment is avoided.
The detachable connection of the cover plate 4 and the outer barrel 1 can be realized in various forms, for example, clamping, hinging, inserting, connecting through a magnetic structure or connecting through a fastener, etc. In some embodiments, the cover plate 4 and the tub 1 are detachably connected by fasteners. Specifically, referring to fig. 1, fig. 2 and fig. 3, in some embodiments, a first threaded hole 122 is formed on the outer cylinder 1, a second threaded hole 41 is formed on the cover plate 4 corresponding to the first threaded hole 122, a fastener is inserted into the first threaded hole 122 and the second threaded hole 41, and both the first threaded hole 122 and the second threaded hole 41 are in threaded connection with the fastener. On this basis, in some embodiments, the number of the first threaded holes 122, the second threaded holes 41 and the fasteners is multiple, the multiple fasteners are respectively inserted into the corresponding first threaded holes 122 and the corresponding second threaded holes 41, and the multiple fasteners are uniformly distributed along the axial direction of the cover plate 4. Preferably, in some embodiments, the cover plate 4 is rectangular, the number of the first threaded holes 122, the number of the second threaded holes 41 and the number of the fastening members are four, and the four fastening members are respectively located at four corners of the cover plate 4.
Referring to fig. 1, 2 and 3, in some embodiments, a groove 123 is formed on an outer wall of the outer cylinder 1, and the through-connection window 121 is formed in the groove 123. On this basis, in some embodiments, the edge of the cover plate 4 abuts the inner wall of the groove 123, and the side of the cover plate 4 facing away from the inside of the outer barrel 1 is flush with the side of the groove 123 facing away from the inside of the outer barrel 1.
Referring to fig. 1 and 2, in some embodiments, the groove 123 has a rectangular cross section along the radial direction of the outer cylinder 1. On the basis, in some embodiments, the cross section of the groove 123 along the radial direction of the outer cylinder 1 and the cross section of the adapter window 121 along the radial direction of the outer cylinder 1 are both rectangular, the cross section of the groove 123 along the radial direction of the outer cylinder 1 coincides with the geometric center of the cross section of the adapter window 121 along the radial direction of the outer cylinder 1, and the distance between the contour line of the cross section of the groove 123 along the radial direction of the outer cylinder 1 and the contour line of the cross section of the adapter window 121 along the radial direction of the outer cylinder 1 is 3 mm. Of course, in some other embodiments, the cross section of the groove 123 along the radial direction of the outer cylinder 1 may also be triangular, circular, oval, quincunx or other irregular shapes.
It should be noted that the adapting window 121 is formed in the groove 123, that is, the projection of the adapting window 121 along the radial direction of the outer cylinder 1 is located in the projection of the groove 123 along the radial direction of the outer cylinder 1. When the cover plate 4 is covered on the through-connection window 121, the area between the sidewall of the groove 123 and the through-connection window 121 can be attached to the side of the cover plate 4 facing the inside of the outer cylinder 1. Specifically, in some embodiments, the depth of the groove 123 is 3mm and the thickness of the cover plate 4 is 3 mm. With such a structure, the depth of the groove 123 is the same as the thickness of the cover plate 4, so that the area between the sidewall of the groove 123 and the adapting window 121 can be attached to the side of the cover plate 4 facing the inside of the outer cylinder 1.
Further, referring to fig. 1 and 2, the cable 3 further includes an adapter assembly 33, and the high temperature resistant cable 31 and the common cable 32 are connected through the adapter assembly 33. Specifically, in some embodiments, the transition assembly 33 includes a first cable connector 31, a second cable connector 32 and a transition module 33, the first cable connector 31 is connected to an end of the high temperature resistant cable 31 close to the common cable 32, the second cable connector 32 is connected to an end of the common cable 32 close to the high temperature resistant cable 31, and the first cable connector 31 and the second cable connector 32 are electrically coupled through the transition module 33. On the basis, in some embodiments, the first cable connector 31 and the second cable connector 32 are both N-type rf connectors.
Referring to fig. 1 and 2, in some embodiments, the length of the adaptor window 121 along the axial direction of the outer cylinder 1 is the same as the length of the adaptor assembly 33 along the axial direction of the outer cylinder 1. With the structure, the high-temperature-resistant cable 31 and the common cable 32 can be conveniently disconnected and connected by workers.
Further, the high temperature resistant cable 31 and the ordinary cable 32 are fixed to the outer tube 1 by a jig. Structural style like this for outer tube 1 can carry out firm support to cable 3, can avoid cable 3 to receive external factors's interference to produce effectively and rock and cause the circuit to break off. In some embodiments, the common cable 32 is secured at the transit window 121 by a clamp.
Further, referring to fig. 1 and 4, a lifting lug 126 is formed on the outer wall of the outer cylinder 1. In such a structural form, the worker can utilize the lifting lug 126 to lift the high-temperature fission chamber detection device into the reactor. On the basis, in some embodiments, referring to fig. 4, the outboard section 12 includes a transition section 124 and a tail section 125, the transition section 124 is connected between the protruding section 11 and the tail section 125, the transition window 121 is formed on the transition section 124, the lifting lug 126 is formed on the tail section 125, and the wall thickness of the transition section 124 is greater than that of the tail section 125. In such a structural form, the wall thickness of the switching section 124 is greater than that of the tail section 125, the strength of the switching section 124 is enhanced, the switching window 121 arranged on the switching section 124 cannot greatly affect the overall strength of the outer barrel 1, and the lifting safety of the lifting lugs 126 is guaranteed. Preferably, in some embodiments, the wall thickness of the transition section 124 is 2mm more than the wall thickness of the tail section 125. Based on the external segment 12 including the adapter segment 124 and the tail segment 125, in some embodiments, referring to fig. 5, the length of the adapter segment 124 along the axial direction of the outer barrel 1 is greater than the length of the adapter assembly 33 along the axial direction of the outer barrel 1.
In some other embodiments, the lifting lug 126 may be formed on the side of the transfer window 121 close to the protruding section 11 according to practical situations. With the structure, in the hoisting process, the position of the external section 12 for opening the switching window 121 is free from the tension of the sling, so that the wall thickness of the external section 12 is not required to be thickened, and the hoisting safety of the lifting lug 126 can be guaranteed.
In some embodiments, the number of lifting lugs 126 is multiple, and the multiple lifting lugs 126 include a first lifting lug 126 and a second lifting lug 126. The first lifting lug 126 and the second lifting lug 126 are symmetrically arranged along the axis of the outer cylinder 1. On the basis, in some embodiments, the number of the second lifting lugs 126 and the number of the second lifting lugs 126 are multiple, the first lifting lugs 126 and the second lifting lugs 126 are arranged in a one-to-one correspondence, and the first lifting lugs 126 and the second lifting lugs 126 are both arranged along the axial direction of the outer barrel 1. The lifting safety of the lifting lug 126 is guaranteed. On the basis, in some embodiments, the tail end and the adaptor section 124 may be formed with a lifting lug 126.
Further, referring to fig. 1 and 2, the external section 12 is formed with a cable outlet 127, and the common cable 32 extends out of the outer tube 1 through the cable outlet 127. Compared with the structure that the common cable 32 extends out of the outer cylinder 1 through the switching window 121, the structure enables the common cable 32 to extend for a certain distance in the outer cylinder 1, and therefore the protection effect of the outer cylinder 1 on the common cable 32 is good. Specifically, when the part of the common cable 32 outside the outer tube 1 is disturbed by the external environment and shakes, the common cable 32 can be sufficiently supported by the outer tube 1 by a distance extending in the outer tube 1, and the connection between the common cable 32 and the high temperature-resistant cable 31 is prevented from being broken due to great influence. On this basis, in some embodiments, the common cable 32 is secured at the cable exit 127 by a clamp.
Referring to fig. 1 and 2, in some embodiments, the cable outlet 127 is located on a side of the transfer window 121 remote from the reactor. In such a structure, the switching window 121 is formed on the side wall of the outer tube 1, and the outer tube 1 has a good protection effect on the connection between the common cable 32 and the high temperature resistant cable 31. In addition, it can be understood that if the cable outlet 127 is located at the side of the transit window 121 close to the reactor, the ordinary cable 32 needs to be bent to the side close to the high temperature resistant cable 31 to extend out of the outer tube 1 through the cable outlet 127, which may cause material waste. Based thereon, in some embodiments, the cable exit 127 is formed on the tail section 125.
Further, referring to fig. 1 and 2, a hanging flange 128 is formed at one end of the outboard section 12 near the entry section 11, and the hanging flange 128 is used for connecting with a reactor so that the entry section 11 extends into the reactor. Specifically, in some embodiments, the suspension device is supported on the reactor roof 01, the portion of the outer drum 1 located on the lower side of the suspension flange 128 is the protruding section 11, and the portion located on the upper side of the suspension flange 128 is the outboard section 12. In some embodiments, the suspension flange 128 is formed on the transition piece 124.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (13)
1. A high temperature fission chamber probe, comprising:
the outer barrel comprises an extension section and an external section, the extension section is used for extending into the reactor, and a switching window is formed on the external section;
the probe is arranged at the position corresponding to the reactor core in the extension section;
the cable, including high temperature resistant cable and ordinary cable, high temperature resistant cable is located in the urceolus, its one end with the probe is connected, and the other end extends to switching window department, ordinary cable with high temperature cable is in switching window department connects, ordinary cable is kept away from the one end of high temperature resistant cable stretches out the urceolus for with the signal processing device electric connection.
2. The high temperature fission chamber detection device of claim 1, wherein the external segment has a plurality of the transfer windows formed thereon.
3. The high temperature fission chamber detection device of claim 2, wherein the plurality of relay windows are evenly distributed along a circumference of the outboard segment.
4. The high temperature fission chamber detection device of claim 3, wherein there are two of said relay windows, both of said relay windows being symmetrically disposed with respect to a central axis of said outer barrel.
5. The high temperature fission chamber detection device of claim 1, wherein the number of cables is a plurality, each of the plurality of cables extending along the direction in which the outer barrel extends, and a width of the transfer window along the plurality of cables is greater than a width of the plurality of cables along a transverse direction.
6. The high temperature fission chamber detection device of claim 1, wherein the adaptor window is rectangular.
7. The high temperature fission chamber detection device of claim 1, further comprising a cover plate covering said adaptor window, said cover plate being removably attached to said outer barrel.
8. The high temperature fission chamber detection device of claim 7, wherein the cover plate and the adaptor window are removably connected by a fastener.
9. The high temperature fission chamber detection device of claim 1, wherein the cable further includes an adapter assembly, the high temperature resistant cable and the generic cable being connected by the adapter assembly.
10. The high temperature fission chamber detection device of claim 1, wherein the high temperature resistant cable and the ordinary cable are secured to the outer barrel by clamps.
11. The high temperature fission chamber detection device of claim 1, wherein the external segment has a cable exit formed thereon, the common cable extending out of the external barrel through the cable exit.
12. The high temperature fission chamber detecting device according to any one of claims 1 to 11, wherein a hanging flange is formed at an end of the external section near the protruding section, and the hanging flange is used for being connected with the reactor so that the protruding section protrudes into the reactor.
13. A high temperature fission chamber probe system, comprising:
a high temperature fission chamber probe as claimed in any one of claims 1 to 12;
and the signal processing device is electrically connected with one end of the common cable, which is far away from the high-temperature-resistant cable, and is used for processing the information detected by the probe.
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| CN202111388889.1A CN114167171A (en) | 2021-11-22 | 2021-11-22 | High-temperature fission chamber detection device and high-temperature fission chamber detection system |
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| CN202111388889.1A CN114167171A (en) | 2021-11-22 | 2021-11-22 | High-temperature fission chamber detection device and high-temperature fission chamber detection system |
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