Traction type monitoring equipment and nuclear facility

Abstract

The present invention discloses a traction monitoring device, including a detector, a sleeve, and a traction device, wherein both ends of the sleeve are respectively passed through the wall of a high-dose room and communicated with the outside of the high-dose room, and the other parts of the sleeve are arranged inside the high-dose room; the detector is arranged in the sleeve and is inside the high-dose room, and is used to detect the radiation level inside the high-dose room; the traction device is connected to the detector through a traction rope, and is arranged outside the high-dose room, and is used to traction the detector to move in the sleeve, so that the detector reaches a preset detection position in the sleeve. The present invention also discloses a nuclear facility. The monitoring device of the present invention is easy to install and maintain, and has a low irradiation risk.

Description

Technical Field

[0001] The invention belongs to the field of nuclear technology, and in particular relates to a traction-type monitoring device and a nuclear facility. Background Art

[0002] There are usually some rooms with high radiation levels in nuclear facilities. These rooms with high radiation doses contain a large number of process equipment, which may pose a radiation criticality risk and require monitoring of radiation levels in the rooms. In the past, the monitoring of radiation levels in such rooms was generally completed through radiation detection instruments placed in the room. However, due to the high background radiation level in the room, it is inconvenient for personnel to enter and exit the room. In addition, some process equipment is extended downward from the floor of the room, making installation and maintenance difficult and irradiation risk high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a traction-type monitoring device and a nuclear facility in view of the above-mentioned deficiencies in the prior art. The monitoring device is easy to install and maintain, and has a low radiation risk.

[0004] The technical solution of the present invention to solve the above technical problems is:

[0005] According to one aspect of the present invention, a traction monitoring device is provided, and its technical solution is as follows:

[0006] A traction monitoring device comprises a detector, a sleeve, and a traction device, wherein two ends of the sleeve are respectively passed through the wall of a high-dose room and communicated with the outside of the high-dose room, and the other part of the sleeve is arranged inside the high-dose room; the detector is arranged in the sleeve and is located inside the high-dose room, and is used to detect the radiation level inside the high-dose room; the traction device is connected to the detector through a traction rope, and is arranged outside the high-dose room, and is used to traction the detector to move in the sleeve, so that the detector reaches a preset detection position in the sleeve.

[0007] Preferably, the monitoring device further comprises a receiver, which is arranged outside the high-dose room and connected to the detector via a measuring cable, and the detector is also used to transmit the detected radiation level information to the receiver via the measuring cable.

[0008] Preferably, a metal bellows outer sheath is disposed outside the measuring cable, and the metal bellows outer sheath is welded or bolted to the detector.

[0009] Preferably, the monitoring device further comprises a first limiter, which is arranged on the measuring cable and is used to limit the moving distance of the detector in the casing.

[0010] Preferably, the measuring cable length between the first stopper and the detector is equal to the sleeve length between the detector and the sleeve opening of the sleeve close to the measuring cable side, so as to prevent the detector from moving further when the detector reaches a preset detection position.

[0011] Preferably, the monitoring device further comprises a second limiter, which is arranged on the traction rope and is used to limit the distance that the detector is pulled out from the casing.

[0012] Preferably, the inner diameter of the sleeve is 1.2 to 2.5 times the outer diameter of the detector.

[0013] Preferably, the casing includes a transmission section and a wall-penetrating section, the transmission section is the part of the casing located inside the high-dose room, and the transmission section is a rigid pipe; the wall-penetrating section is the part of the casing located inside the wall of the high-dose room, which is connected to the transmission section, and the wall-penetrating section is arc-shaped.

[0014] According to another aspect of the present invention, a nuclear facility is provided, and its technical solution is as follows:

[0015] A nuclear facility comprises a high-dose room and the above-mentioned traction-type monitoring device, wherein the casing in the traction-type monitoring device is penetrated on the wall of the high-dose room.

[0016] Preferably, the two ends of the sleeve are penetrated at different heights of the wall in the same direction, with one end being located above the other end, or the two ends of the sleeve are respectively penetrated on two walls.

[0017] Beneficial effects:

[0018] The traction-type monitoring equipment and nuclear facility of the present invention are easy to install and maintain, and have good radiation protection performance, high safety, and low irradiation risk; and, by setting the first limiter and the second limiter, not only the accuracy of the detection position can be guaranteed, but also the convenience of installation can be greatly improved, thereby ensuring the reliability of the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the installation of the traction type monitoring device in the embodiment of the present invention;

[0020] Figure 2 Another installation diagram of the traction-type monitoring device in the embodiment of the present invention;

[0021] In the figure: 1-detector, 2-casing; 21-transmission section; 22-wall penetration section; 3-traction rope; 4-traction device; 5-measuring cable; 61-first limiter; 62-second limiter. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1

[0027] like Figure 1 , Figure 2 As shown, this embodiment discloses a traction-type monitoring device for monitoring the radiation level in a high-dose room, which includes a detector 1, a sleeve 2, and a traction device 4, wherein: both ends of the sleeve 2 are respectively passed through the wall (concrete wall) of the high-dose room and communicated with the outside of the high-dose room, and the other part of the sleeve 2 is arranged inside the high-dose room; the detector 1 is arranged in the sleeve 2 and is located inside the high-dose room, and is used to detect the radiation level inside the high-dose room; the traction device 4 is connected to the detector 1 through a traction rope 3, and is arranged in an area outside the high-dose room for easy operation by personnel, and is used to traction the detector 1 to move in the sleeve 2 so that the detector reaches a preset detection position in the sleeve.

[0028] During installation, the detector 1 is connected to the traction rope 3 outside the casing 2, and the detector 1 is pulled from one end of the casing 2 by the traction device 4, and the detector 1 is pulled into the casing 2 and moved in the casing 2 until it moves to a preset detection position, that is, the detector can be easily installed by the traction device 4. The detection position can be set according to the position of the device to be tested in the high-dose room, and will not be described in detail in this embodiment.

[0029] In some embodiments, the monitoring device also includes a receiver (not shown in the figure), which is arranged outside the high-dose room and connected to the detector 1 through the measuring cable 5. The detector 1 is also used to transmit the detected radiation level information to the receiver through the measuring cable 5. The receiver is used to convert the received radiation level information into a radiation value and display the radiation value.

[0030] Specifically, during maintenance and replacement, the detector 1 is pulled from the other end of the casing 2 by the measuring cable 5, and the detector 1 is pulled out from the detection position in the casing 2. After the maintenance is completed, the detector 1 is pulled from one end of the casing 2 by the traction device 4 until it moves to the preset detection position.

[0031] In some embodiments, the measuring cable 5 is provided with an outer skin having strong toughness, such as a metal bellows outer sheath, and the metal bellows outer sheath is welded or bolted to the detector 1, so that the tensile structural strength of the measuring cable 5 can withstand the dead weight of the measuring cable 5 and the detector 1 and the resistance inside the casing without causing breakage, thereby ensuring that the detector will not break during the process of pulling it out of the casing, thereby ensuring the integrity of the structure.

[0032] In some embodiments, the monitoring device also includes a first limiter 61, which is arranged on the measuring cable 5 and is used to limit the distance that the detector 1 moves in the casing 2. At the same time, it can be judged whether the detector 1 reaches the preset detection position based on the position of the first limiter 61.

[0033] Specifically, the first limiter 61 can be installed on both sides of the measuring cable 5. When the traction device 4 pulls the detector 1 to move, the measuring cable 5 and the first limiter 61 move together with the detector 1. When the first limiter 61 moves to the pipe mouth of the casing 2, the first limiter 61 abuts against the pipe mouth of the casing 1, thereby preventing the detector 1 from continuing to move in the casing 2, thereby limiting the moving distance of the detector 1 in the casing 2.

[0034] In this embodiment, the length of the measuring cable 5 between the first limiter 61 and the detector 1 is equal to the length of the casing between the detector 1 and the casing mouth of the casing 2 close to the measuring cable side. When the detector 1 moves to the preset detection position, the first limiter 61 just abuts against the casing mouth of the casing 2, thereby preventing the detector 1 from continuing to move when it reaches the preset detection position.

[0035] In some embodiments, the monitoring device further includes a second limiter 62 , which is disposed on the traction rope and is used to limit the distance by which the detector 1 is pulled out of the casing 2 .

[0036] Specifically, the second limiter 62 can be installed on both sides of the traction rope 3. When the detector 1 is pulled out of the sleeve 2, the traction rope 3 and the second limiter 62 move together with the detector 1. When the second limiter 62 moves to the pipe mouth of the sleeve 2, the second limiter 62 is against the pipe mouth of the sleeve 2, thereby limiting the distance that the detector 1 is pulled out of the sleeve 2.

[0037] In some embodiments, the inner diameter of the sleeve 2 is preferably 1.2 to 2.5 times the outer diameter of the probe 1 to ensure that the probe will not get stuck when moving within the entire sleeve.

[0038] In some embodiments, the casing 2 includes a transmission section 21 and a wall-penetrating section 22. The transmission section 21 is the part of the casing located inside the high-dose room, and the transmission section is preferably a rigid pipe with good airtightness, for example, a steel pipe can be used; the wall-penetrating section 22 is the part of the casing located inside the wall of the high-dose room, which is connected to the transmission section 21, and the wall-penetrating section 22 is preferably in an arc shape to ensure the shielding effect and ensure radiation protection safety. Of course, the wall-penetrating section 22 can also adopt other pipeline structure forms that can ensure radiation protection safety.

[0039] It should be noted that the device of this embodiment is not only applicable to critical monitoring of high-dose rooms, but also can be used for critical monitoring of other types of rooms other than high-dose rooms. It is easy to install and maintain, and has low radiation risk.

[0040] The traction monitoring device of this embodiment has at least the following effects:

[0041] 1) Easy to install and maintain, with good radiation protection performance, high safety and low radiation risk;

[0042] 2) By setting the first limiter and the second limiter, not only the accuracy of the detection position can be guaranteed, but also the convenience of installation can be greatly improved and the reliability of the measurement data can be ensured.

[0043] Example 2

[0044] This embodiment discloses a nuclear facility, including a high-dose room and the traction-type monitoring device described in Embodiment 1, wherein the casing in the traction-type monitoring device is penetrated through the wall (concrete wall) of the high-dose room.

[0045] Specifically, if Figure 1 As shown, the two ends of the sleeve 2 can be at different heights of the wall in the same direction, with one end being above the other end, that is, the traction-type monitoring device is installed in a longitudinal manner. Figure 2 As shown, the two ends of the sleeve 2 can also be respectively penetrated on two walls, for example, respectively penetrated on two opposite walls (such as Figure 2 As shown in the figure) or on two adjacent walls (not shown in the figure), that is, the traction-type monitoring equipment is installed horizontally.

[0046] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A traction monitoring device, characterized in that: It comprises a detector (1), a casing (2), and a traction device (4). The two ends of the sleeve are respectively installed on the wall of the high-dose room and communicated with the outside of the high-dose room, and the other part of the sleeve is installed inside the high-dose room; The detector is arranged in the sleeve and inside the high-dose room, and is used to detect the radiation level inside the high-dose room; The traction device is connected to the detector via a traction rope (3) and is arranged outside the high-dose room, and is used to traction the detector to move in the casing so that the detector reaches a preset detection position in the casing; The device further comprises a receiver, which is arranged outside the high-dose room and connected to the detector via a measuring cable (5), wherein the measuring cable is passed through the casing. The detector is also used to transmit the detected radiation level information to the receiver via the measurement cable; The device further comprises a first stopper (61), which is arranged on the measuring cable and is used to limit the distance the detector moves in the casing. The length of the measuring cable between the first stopper (61) and the detector (1) is equal to the length of the casing between the detector and the casing opening of the casing close to the measuring cable side, so that the detector is prevented from moving further when the detector reaches a preset detection position; The device also includes a second stopper (62), The second limiter is arranged on the traction rope, and is used for limiting the distance that the detector is pulled out from the casing.

2. The traction monitoring device according to claim 1, characterized in that: The measuring cable (5) is provided with a metal bellows outer sheath outside, and the metal bellows outer sheath is welded or bolted to the detector.

3. The traction monitoring device according to any one of claims 1 to 2, characterized in that: The inner diameter of the sleeve (2) is 1.2 to 2.5 times the outer diameter of the detector.

4. The traction monitoring device according to any one of claims 1 to 2, characterized in that: The casing comprises a transmission section (21) and a wall penetration section (22). The transmission section is the portion of the casing located inside the high-dose room, and the transmission section is a rigid pipe; The wall-penetrating section is the part of the casing located in the wall of the high-dose room, which is connected to the transmission section, and the wall-penetrating section is in an arc shape.

5. A nuclear facility, comprising a high-dose room, characterized in that: Also includes the traction monitoring device according to any one of claims 1 to 4, The sleeve (2) in the traction-type monitoring device is inserted into the wall of the high-dose room.

6. The nuclear facility according to claim 5, characterized in that: The two ends of the sleeve (2) are inserted through the wall in the same direction at different heights, with one end being located above the other end, or the two ends of the sleeve are respectively inserted through two walls.

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