Mobile remote refrigeration maintenance device
An overhaul device and remote technology, which is applied in the field of mobile remote freezer overhaul devices, can solve the problems of high dose at the blocked position of the process pipeline, lack of safe maintenance conditions, shutdown of process system facilities, etc., so that the exposure dose can be controlled. , the effect of reducing the exposure dose and avoiding outages
Active Publication Date: 2022-04-19
THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
2. After the process pipeline is clogged, the maintenance personnel will introduce pressure purge, steam purge or acid soaking through the outdoor process pipeline of the equipment to unclog it. Blowing, 8Kg steam blowing and other methods are extremely difficult to dredge
[0003] After the process pipeline in a high-radioactive environment is blocked, because the process pipeline in the equipment room is mostly three-way or four-way, which communicates with multiple equipment storage tanks, and there is no maintenance valve installed in the equipment room, the pressure in the process pipeline cannot be suppressed, and it is impossible to pass through compressed air, steam, etc. Unclog blocked pipelines by other conventional methods
In addition, since the radioactivity dose measured in the on-site equipment room is above 3000mSv / h, the dose at the blocked position of the process pipeline is higher, and there is no safe maintenance condition, and the maintenance personnel cannot enter the equipment room for maintenance, so the existing maintenance method is difficult to implement
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] like figure 1 The mobile long-distance freezing maintenance device shown can be used for freezing maintenance of blockage of high-radiation pipelines, including a freezing tank 3 , an exhaust pipe 2 and a liquid nitrogen diversion pipe 4 .
[0030] The freezing tank 3 is used to contain liquid nitrogen, and the concave clamping port 1 is processed on the freezing tank 3. The direction of the clamping port 1 is parallel to the central axis of the freezing tank 3, and the high-radiation pipeline to be repaired can be It is clamped in the clamping port 1 by frictional force, and fits closely with the freezing tank 3 to ensure that the medium in the pipeline is frozen in the shortest time. The size of the clamping port 1 matches the diameter of the high-radiation pipeline to be overhauled. The high-activity pipelines to be repair...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the technical field of radioactive environment maintenance, and specifically discloses a mobile remote freezing maintenance device, which includes a freezing tank, an exhaust pipe arranged at the top of the freezing tank, and a liquid nitrogen guide pipe connected to the side wall of the freezing tank. The device of the invention is resistant to corrosion, does not deform when frozen, does not become brittle, and is light in weight. It is convenient for maintenance personnel to operate remotely, and can reduce the exposure dose of maintenance personnel to the greatest possible extent. It is simple to operate and easy to use, and meets the requirements for remote maintenance in high-radiation places. need.
Description
technical field [0001] The invention belongs to the technical field of radioactive environment maintenance, and in particular relates to a mobile remote refrigeration maintenance device. Background technique [0002] There are currently two main methods for the maintenance of process pipelines in high-radiation environments: 1. Clean and decontaminate the process system and conduct on-site inspections. After the radioactive dose is at least less than 200uSv / h to meet the safety requirements, the maintenance personnel wear protective work clothes and maintenance air suits etc., enter the radioactive equipment room to cut and block the process pipeline, replace the pipeline with the same specification and material, weld it, complete the inspection after passing the flaw detection, and dispose of the cut process pipeline, protective clothing, etc. as radioactive waste. 2. After the process pipeline is clogged, the maintenance personnel will introduce pressure purge, steam purge...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/017G21C15/14
CPCG21C15/14G21C17/017Y02E30/30
Inventor 牟凌陈勤王俊会贾巍峰刘开明张磊张卫林覃龙曹学斌马光辉
Owner THE 404 COMPANY LIMITED CHINA NAT NUCLEAR