CN217788031U

CN217788031U - Nuclear detection device

Info

Publication number: CN217788031U
Application number: CN202220968302.8U
Authority: CN
Inventors: 肖鹏飞; 王欣; 张伟; 夏永震; 谢永骥; 杨康; 苏家豪; 袁婧; 王兴旺
Original assignee: China Nuclear Power Engineering Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-11-11
Anticipated expiration: 2032-04-25

Abstract

The utility model provides a nuclear detection device, include: sleeve pipe and detector, sleeve pipe include canned paragraph and installing section, and the canned paragraph runs through the shield wall and links firmly with the shield wall, and the installing section is located the technology room and corresponds with the process equipment that awaits measuring, and its one end and canned paragraph intercommunication, the other end are sealed, and the detector is located the installing section for survey the nuclear radiation volume of process equipment that awaits measuring. A sleeve with a closed tail end penetrates through the shielding wall to serve as an installation medium of the nuclear radiation detector, a transport channel and measuring point position positioning are provided for the detector, and therefore the detector can be conveniently sent into an installation section of the sleeve to monitor equipment to be detected and can also be conveniently taken out of the sleeve to overhaul or replace the detector; because the tail end of the sleeve is closed, the radiation gas in the high-radiation-dose room cannot escape along with the sleeve, and the detector is prevented from being polluted or damaged, so that the safety of operators is ensured.

Description

Nuclear detection device

Technical Field

The utility model relates to a radiation monitoring field, concretely relates to nuclear detection device.

Background

Some rooms within a nuclear facility typically have higher radiation levels, while some remotely located process equipment within the room has radiation monitoring requirements. The radiation monitoring instrument generally has the requirements of regular maintenance, calibration and replacement, but the installation space of process equipment in the working conditions is often tense, the radiation level is high, personnel can not enter and exit a room to install and disassemble the radiation monitoring instrument, and no better method can solve the problems at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide a nuclear detection device who is used for in the high dose room and be convenient for installation dismantlement.

Solve the utility model discloses the technical scheme that technical problem adopted is:

the utility model provides a nuclear detection device, include: a casing and a detector, wherein the casing is provided with a hole,

the sleeve comprises a fixed section and an installation section, the fixed section penetrates through the shielding wall and is fixedly connected with the shielding wall, the installation section is positioned in the process room and corresponds to the process equipment to be tested, one end of the installation section is communicated with the fixed section, the other end of the installation section is closed,

the detector is located in the installation section and used for detecting the nuclear radiation quantity of the process equipment to be detected.

Optionally, the detector is provided with a plurality of detectors, and the plurality of detectors are arranged at intervals along the length direction of the installation section and are in one-to-one correspondence with monitoring points on the process equipment to be detected.

Optionally, the fixing section is an arc-shaped pipe, and the mounting section is a straight pipe.

Optionally, the detector further comprises a flexible pipe, the flexible pipe is sleeved in the sleeve, and the detector is fixed in the flexible pipe.

Optionally, the detector is provided with a signal cable, the signal cables of the plurality of detectors are bundled to form a cable bundle, the cable bundle is fixed on the pipe wall of the flexible pipe, and the signal cable penetrates through the fixing section and then is connected with the signal processing device in the operation room.

Optionally, the probe is fixed to the wall of the flexible pipe by a cable bundle.

Optionally, the flexible tube is a bellows.

Optionally, the bottom of the flexible pipe is provided with a tube head facilitating the entry of the end of the flexible pipe from the head end of the casing into the end of the casing.

Optionally, a detector is also provided within the cartridge.

Optionally, the tip of the tube head is closed.

In the utility model, a sleeve with a closed end is used as the mounting medium of the nuclear radiation detector, the fixed section of the sleeve is fixed in the shielding wall, the mounting section of the sleeve corresponds to the equipment to be detected in a room with high radiation dose after passing through the shielding wall, and a transport channel and a measuring point position are provided for the detector, so that the detector can be conveniently sent into the mounting section of the sleeve to monitor the equipment to be detected and can also be conveniently taken out of the sleeve to overhaul or replace the detector; because the tail end of the sleeve is closed, the radiation gas in the high-radiation-dose room cannot escape along with the sleeve, and the detector is prevented from being polluted or damaged, so that the safety of operators is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a nuclear detection device provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a measurement section of a nuclear detection device provided in embodiment 1 of the present invention;

fig. 3 is a partial enlarged view of the end of fig. 2.

Detailed Description

In the following, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present invention.

In the description of the present invention, it should be noted that the indication of orientation or positional relationship such as "up" is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the indicated device or element must be provided with a specific orientation, constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in a specific case to those skilled in the art.

the detector is positioned in the installation section and used for detecting the nuclear radiation quantity of the process equipment to be detected.

Example 1:

as shown in fig. 1 to 3, the present embodiment provides a nuclear detection apparatus, including: the casing and the detector 3 are then,

the sleeve comprises a fixed section 1 and an installation section 2, the fixed section 1 penetrates through a shielding wall 8 and is fixedly connected with the shielding wall 8, the installation section 2 is positioned in the process room and corresponds to the process equipment 7 to be tested, one end of the installation section is communicated with the fixed section 1, the other end of the installation section is closed,

the detector 3 is located in the installation section 2 and is used for detecting the nuclear radiation quantity of the process equipment 7 to be detected.

Therefore, a sleeve with a closed tail end is used as an installation medium of the detector 3, the fixed section 1 of the sleeve is fixed in the shielding wall, the installation section 2 of the sleeve corresponds to the process equipment 7 to be detected in a high-radiation-dose room after penetrating through the shielding wall, a transport channel and measurement point position positioning are provided for the detector 3, and therefore the detector 3 can be conveniently sent into the installation section 2 of the sleeve in a mode of pulling a signal cable of the detector 3 to monitor the process equipment 7 to be detected, and the detector 3 can also be conveniently pulled out of the sleeve in a mode of pulling the signal cable of the detector 3 to overhaul or replace the detector 3; because the sleeve pipe end is sealed, its leakproofness has been guaranteed, and the radiation gas in the high radiation dose room can not be escaped along with the sleeve pipe, and prevents that detector 3 from being contaminated or destruction to operating personnel's safety has been guaranteed.

In this embodiment, for a part of long process equipment 7 to be measured requiring multi-point monitoring, the plurality of detectors 3 are provided, and the plurality of detectors 3 are arranged at intervals along the length direction of the installation section 2 and correspond to monitoring points on the process equipment 7 to be measured one by one.

Firstly, the position of a measuring point is positioned on the mounting section 2 of the sleeve, and each detector 3 is fixed in the sleeve after being conveyed to the measuring point position, so that the radiant quantity of the measuring point position of the process equipment 7 to be measured can be accurately measured.

The diameter of a single detector 3 is required to be small, and the length is controlled as far as possible; a bellows in-line probe apparatus may include one or more probe heads to cover points to be measured on process equipment.

In this embodiment, the fixed section 1 is an arc-shaped pipe, and the installation section 2 is a straight pipe.

The fixed section 1 is preferably an arc-shaped pipe, and compared with a straight pipe, the damage to the shielding effect of the shielding wall 8 can be reduced.

In this embodiment, the device further comprises a flexible tube 4, the flexible tube 4 is sleeved in the sleeve, and the detector 3 is fixed in the flexible tube 4.

If a plurality of serial detectors 3 are fed into the fixed sleeve only by using the flexible cable bundle 6, when the local resistance of the pipeline is too large or the pipeline is bent, the serial detectors are easily clamped in the pipeline or the flexible cable bundle 6 is bent locally to cause inaccurate positioning, so that the detection efficiency is influenced. With detector 3, signal cable 31, cable harness 6 parcel reentrant fixed pipeline in flexible tube 4, because of flexible tube 4 self intensity is bigger than cable harness 6, be difficult for producing local deformation in fixed pipeline, the card probability is lower in fixed pipeline, can ensure simultaneously that tandem detector relative position is fixed, improves and surveys the accuracy. Meanwhile, the flexible pipe 4 also plays an integral protection role for the detector 3, the signal cable 31 and the cable bundle 6, and can prevent the detector from being polluted or physically damaged.

In this embodiment, the detector 3 has a signal cable 31 to transmit the measurement signal of a single detector, the signal cables 31 of the plurality of detectors 3 are bundled to form a cable bundle 6, the cable bundle 6 is fixed on the tube wall of the flexible tube 4, and the signal cable 31 passes through the fixing section 1 and then is connected to the signal processing device in the operation room.

In this embodiment, the probe 3 is fixed to the wall of the flexible tube 4 by a cable harness 6.

The cable harness 6 is a flexible cable harness that collects the signal cables 31 of the plurality of probes 3, sends out the measurement signals as a whole, and fixes the probes 3 thereto to provide attachment points of the probes 3 in the flexible tube.

In this embodiment, the flexible tube 4 is a corrugated tube.

In this embodiment, the bottom of the flexible pipe 4 is provided with a pipe head 5 for facilitating the entry of the tail end of the flexible pipe 4 from the head end of the casing pipe to the tail end of the casing pipe.

In this embodiment, in order to utilize the bellows space to the maximum extent, the probe 3 is also provided in the pipe head 5.

In this embodiment, the tip 5 is closed at its distal end.

The pipe head 5 is fixed at the tail end of the corrugated pipe, the diameter of the pipe head is smaller than that of the corrugated pipe, and meanwhile, the circular end design is adopted, so that the resistance of the corrugated pipe tandem type detection equipment to pass through the arc-shaped section of the sleeve pipe is reduced.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A nuclear detection apparatus, comprising: a sleeve and a detector (3),

the sleeve comprises a fixed section (1) and an installation section (2), the fixed section (1) penetrates through the shielding wall (8) and is fixedly connected with the shielding wall (8), the installation section (2) is positioned in the process room and corresponds to the process equipment (7) to be tested, one end of the installation section is communicated with the fixed section (1), the other end of the installation section is closed,

the detector (3) is positioned in the mounting section (2) and is used for detecting the nuclear radiation quantity of the process equipment (7) to be detected.

2. The nuclear detection device according to claim 1, wherein the detectors (3) are provided in plurality, and the detectors (3) are arranged at intervals along the length direction of the installation section (2) and correspond to monitoring points on the process equipment (7) to be detected one by one.

3. The nuclear detection device according to claim 1 or 2, wherein the fixed section (1) is an arc-shaped tube and the mounting section (2) is a straight tube.

4. The nuclear detection device according to claim 3, further comprising a flexible tube (4), wherein the flexible tube (4) is sleeved in the sleeve, and the detector (3) is fixed in the flexible tube (4).

5. The nuclear detection device according to claim 4, wherein the detector (3) is provided with a signal cable (31), the signal cables (31) of a plurality of detectors (3) are bundled to form a cable bundle (6), the cable bundle (6) is fixed on the pipe wall of the flexible pipe (4), and the signal cable (31) is connected with the signal processing equipment in the operation room after penetrating through the fixing section (1).

6. Nuclear detection apparatus as in claim 5, wherein the detector (3) is fixed to the wall of the flexible tube (4) by a cable bundle (6).

7. The nuclear detection apparatus according to any one of claims 4-6, wherein the flexible tube (4) is a bellows.

8. Nuclear detection apparatus as in any of claims 4-6, characterized in that the bottom of the flexible pipe (4) is provided with a pipe head (5) for facilitating the entry of the end of the flexible pipe (4) from the head end of the casing to the end of the casing.

9. Nuclear detection apparatus as in claim 8, characterized in that a detector (3) is also provided in the cartridge (5).

10. The nuclear detection device according to claim 8, wherein the tip (5) is closed at its distal end.