Cable sample reserving device for nuclear power station
Technical Field
The invention belongs to the field of sample reserving devices, and particularly relates to a cable sample reserving device for a nuclear power station.
Background
In nuclear power plants, cables serve as critical electrical components, carrying safety-or economical-related power transmission and signal transmission functions. The nuclear power plant cable is at risk of deterioration during 40 to 60 years of service due to the aging mechanism of heat and irradiation, thereby affecting the safe and economical operation of the nuclear power plant reactor. This requires the manager to periodically monitor status for the service cable and perform re-qualification tests as necessary to ensure availability of the service cable. In addition, for the life extension work of the nuclear power station, a supplementary identification test is also required to be carried out on the service cable so as to prolong the identification life of the service cable. However, the difficulty in acquiring the samples of the service cable is great, so that the samples capable of representing the aging state of the service cable are required to be acquired in a sample-retaining manner, and support is provided for state monitoring and service life identification.
However, the number and the laying distribution of the cables of the nuclear power plant are very complex, the field environment of the nuclear power plant is also harsh, and how to systematically execute the sample reservation of the cables in the whole plant range of the nuclear power plant and perform effective state and service life assessment on the field service cables in the whole plant range of the nuclear power plant based on the sample reservation cables is a problem yet to be solved in the industry.
Disclosure of Invention
The invention aims to provide a cable sample reserving device for a nuclear power station, which solves the problem of sample reserving of the cable of the nuclear power station and provides a sample and data support for the state and service life evaluation of the service cable of the nuclear power station.
The technical scheme of the invention is as follows: the cable sample reserving device for the nuclear power station comprises a fixed sample reserving ring, a sample reserving ring fixing device, a synchronizing rod A, a main support frame, a manual control rod, wheels, connecting rods, fixing sheets, a movable sample reserving ring and a synchronizing rod B, wherein the main support frame plays a supporting role, all parts are assembled on the main support frame, the main support frame is connected with the wheels through bearings, and the wheels slide on a track, so that the whole device slides along the track; the fixed sample retaining ring is fixed on the main support frame and is immovable; the synchronous rod A and the synchronous rod B are fixed on the main support frame and are fixedly connected with the manual control rod and the fixing piece respectively; the movable sample retaining ring is connected with the main support frame through a fixing piece and can rotate by taking the synchronizing rod B as an axis; the sample retaining ring fixing device comprises a fixing device operating rod and a fixing rod, wherein the fixing rod is used for fixing the movable sample retaining ring; the synchronous rod A, the manual control rod, the wheels, the connecting rod and the fixing piece form a four-rod mechanism, and the synchronous rod B is used for operating the lifting of the movable sample retaining ring;
the sample retaining ring fixing device comprises a fixing device operating rod, and when the movable sample retaining ring is required to be fixed, the fixing device operating rod is operated to be lifted upwards, so that the fixing rod is driven to move towards two sides, the fixing rod passes through a hole in the manual control rod, the manual control rod is not rotated any more, and the purpose of fixing the movable sample retaining ring is achieved.
Through manual control lever operation four-bar linkage, upwards carry manual control lever, it rotates around synchronizing lever A, drives the connecting rod and moves backward, and the backward movement of connecting rod makes the stationary blade anticlockwise rotate around synchronizing lever B, because stationary blade B is connected with the activity sample retaining circle, so the activity sample retaining circle also anticlockwise rotates around synchronizing lever B for the activity sample retaining circle puts down.
After the movable sample retaining ring is put down, the whole device is pushed to move to a working position, the manual control rod is pressed downwards at the moment, the movable sample retaining ring is lifted to the working position through the four-rod mechanism, and the manual control rod is fixed through the sample retaining ring fixing device at the moment, so that the purpose of fixing the movable sample retaining ring is achieved.
The invention has the remarkable effects that: the uniformity of the temperature and the irradiation dose rate of the sample-remaining cable is effectively ensured, and the space requirement of a typical hot spot area of a nuclear power station is met.
Drawings
FIG. 1 is a schematic diagram of a cable sample retention device for a nuclear power plant according to the present invention
Fig. 2 is a schematic diagram of a synchronous rod mechanism of a cable sample retention device for a nuclear power plant according to the present invention
Fig. 3 is a schematic view of a fixing device for a sample retaining ring of a cable sample retaining device for a nuclear power plant according to the present invention
Fig. 4 is a schematic view of a fixing device for a sample retaining ring of a cable sample retaining device for a nuclear power plant according to the present invention
Fig. 5 is a schematic view of a fixing device for a sample retaining ring of a cable sample retaining device for a nuclear power plant according to the present invention
In the figure: 1-fixed sample retaining ring, 2-sample retaining ring fixing device, 3-synchronizing rod A, 4-main support, 5-manual control rod, 6-wheel, 7-connecting rod, 8-fixing piece, 9-movable sample retaining ring, 10-synchronizing rod B, 11-fixing device operating rod and 12-fixing rod
Detailed Description
Cable sample reserving device for nuclear power station
The device comprises a fixed sample retaining ring 1, a sample retaining ring fixing device 2, a synchronizing rod A3, a main support 4, a manual control rod 5, wheels 6, a connecting rod 7, a fixing piece 8, a movable sample retaining ring 9 and a synchronizing rod B10. The sample retaining ring fixing device 2 is shown in fig. 3 and 4, and comprises a fixing device operating rod 11 and a fixing rod 12.
The main support 4 plays a supporting role, each component is assembled on the main support, the main support 4 is connected with the wheels 6 through bearings, and the wheels 6 slide on the rails, so that the whole device slides along the rails. The fixed sample retaining ring 1 and the movable sample retaining ring 9 are used for placing the test electric wires thereon, the fixed sample retaining ring 1 is fixed on the main support 4 and is immovable, and the movable sample retaining ring 9 is connected with the main support 4 through the fixing piece 8 and can rotate by taking the synchronizing rod B10 as an axis. The sample retaining ring fixing device 2 is used for fixing the movable sample retaining ring 9 in the working state. The synchronizing rod A3, the manual control rod 5, the wheels 6, the connecting rod 7 and the fixing piece 8, and the synchronizing rod B10 forms a four-rod mechanism for operating the lifting of the movable sample retaining ring 9. The synchronizing rod A3 and the synchronizing rod B10 are fixed on the main support frame 4 and are respectively fixedly connected with the manual control rod 5 and the fixing piece 8 so that the manual control rod and the fixing piece can synchronously rotate.
In use, the four-bar mechanism may be operated by manual control of the bar 5, as shown in figure 2. When the movable sample retaining ring 9 needs to be put down, the control rod 5 is lifted by hands, rotates around the synchronizing rod A3, drives the connecting rod 7 to move backwards, and the backward movement of the connecting rod 7 enables the fixing piece 8 to rotate anticlockwise around the synchronizing rod B10, and because the fixing piece 8 is connected with the movable sample retaining ring 9, the movable sample retaining ring 9 also rotates anticlockwise around the synchronizing rod B10, so that the movable sample retaining ring 9 is put down. After the movable sample retaining ring 9 is put down, the whole device is pushed to move to a working position below the pipeline. At this time, the manual control lever 5 is pressed downwards, and the movable sample retaining ring 9 is lifted to the working position by the four-bar mechanism. At this time, the manual control rod 5 is fixed through the sample retaining ring fixing device 2, so that the purpose of fixing the movable sample retaining ring 9 is achieved.
The mechanism of the sample ring fixing device 2 is shown in fig. 3, 4 and 5. When the movable sample retaining ring 9 needs to be fixed, the operation rod 11 of the fixing device is operated to lift upwards, so that the fixing rod 12 is driven to move to two sides, the fixing rod 12 passes through the hole on the manual control rod 5, and the manual control rod 5 is not rotated any more, thereby achieving the purpose of fixing the movable sample retaining ring 9. Similarly, if the movable sample retaining ring 9 is to be moved, the fixing device 11 is operated to press the operating rod downwards, so that the fixing rod 12 is moved out of the hole on the manual control rod 5.