Resin unloading remote monitoring device for nuclear power station

Abstract

The utility model discloses a remote monitoring device for resin unloading of a nuclear power station, relates to the technical field of remote monitoring, and is used for solving the problem that in the existing KBE resin unloading period, a worker needs to observe the resin exporting condition through a peephole in a high-radiation dose area for many times. The device comprises a double-end fixing support and an endoscope type camera shooting device, the double-end fixing support comprises a metal rod capable of freely moving, one end of the metal rod is provided with a free end universal wheel, the free end universal wheel is connected with a hand-tight nut on a free end clamp through a metal rod free end connecting screw, and the hand-tight nut is connected with the endoscope type camera shooting device. The other end of the metal rod is provided with a fixed end connecting nut which can be connected with a detachable and replaceable fixed end clamp; the endoscope type camera device comprises a transmission wire rod, an endoscope type camera and a data transmission interface,

Description

Technical Field

[0001] This utility model relates to the field of remote monitoring technology, specifically to a remote monitoring device for resin unloading in nuclear power plants. Background Technology

[0002] The primary coolant purification system (KBE) can purify and dissolve ionic impurities in the primary coolant, purify radioactive corrosion products that exist in the primary coolant in a crystalline state, and regulate the chemical conditions of the primary water, playing an important role in the safe operation of nuclear power plant units.

[0003] Because the nuclear-grade resin loaded in the KBE system's resin bed is non-renewable, the only way to restore KBE system functionality is by unloading and replacing the failed resin. Therefore, resin unloading from the KBE system is a crucial task during nuclear power plant overhauls; incomplete unloading can severely impact the overhaul schedule. However, during KBE resin unloading, workers need to observe the resin discharge through the resin inspection port. Since the inspection port is located in an area with radiation exposure, completing one resin unloading operation requires multiple, lengthy observations through the inspection port, resulting in a high average radiation dose per worker. Utility Model Content

[0004] The purpose of this invention is to provide a remote monitoring device for resin unloading in nuclear power plants, which solves the problem that during KBE resin unloading, staff need to repeatedly go to the inspection hole in the high radiation dose area to observe the resin discharge, enabling staff to remotely observe the resin discharge in the inspection hole in real time in the low radiation dose area.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a remote monitoring device for resin unloading in a nuclear power plant. The device includes: a double-ended fixed bracket and an endoscope-type camera device. The double-ended fixed bracket includes a freely movable metal rod. One end of the metal rod is provided with a free-end universal wheel. The free-end universal wheel is connected to a hand-tightening nut on a free-end clamp through a free-end connecting screw on the metal rod. The other end of the metal rod is provided with a fixed-end connecting nut that can be connected to a detachable and replaceable fixed-end clamp. The endoscope-type camera device includes: a transmission cable and endoscope-type cameras and data transmission interfaces at both ends.

[0006] The aforementioned remote monitoring device for unloading resin in a nuclear power plant includes a free-end clamp with a small notch and a large notch. An endoscope-type camera can be installed in the small notch, and a flashlight can be installed in the large notch.

[0007] The aforementioned remote monitoring device for resin unloading in a nuclear power plant includes two types of detachable and replaceable fixing clips designed according to the main operating environment of the device: one is an annular fixing clip that can be fixed on a cylindrical pipe, and the other is a flat-head fixing clip that can be fixed on a protruding plane.

[0008] In the aforementioned remote monitoring device for resin unloading in a nuclear power plant, the annular fixing clamp is provided with an annular clamp connecting screw that connects to the fixing end connecting nut of the metal rod. The annular clamp connecting screw also enables the annular fixing clamp to have a steering function and to swing up and down.

[0009] In the aforementioned remote monitoring device for unloading resin in a nuclear power plant, the annular fixing clamp provides gripping force through annular clamp fastening screws. When the annular fixing clamp becomes loose and the gripping force is insufficient, the annular clamp fastening screws can be tightened with a Phillips screwdriver to enhance the gripping force of the annular fixing clamp.

[0010] In the aforementioned remote monitoring device for resin unloading in a nuclear power plant, the flat-head fixing clamp is provided with a flat-head clamp connecting screw that connects to the fixing end connecting nut of the metal rod.

[0011] In the aforementioned remote monitoring device for unloading resin in a nuclear power plant, the annular fixing clamp and the flat-head fixing clamp are respectively provided with annular clamp rubber pads and flat-head clamp rubber pads.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The remote monitoring device for resin unloading in nuclear power plants provided by this utility model, on the one hand, by installing a remote monitoring device at the inspection hole in advance, the resin flow in the inspection hole can be observed from a safe distance, reducing the dose received by personnel and protecting the health of the inspection hole observer; on the other hand, by continuously monitoring the resin flow in the inspection hole, the flow rate can be adjusted at any time according to the situation, shortening the resin unloading time and ensuring that the resin is completely emptied. Attached Figure Description

[0013] Figure 1 The figure shown is an overall structural diagram of a double-ended fixed bracket for a remote monitoring device for resin unloading in a nuclear power plant, as described in this utility model.

[0014] Figure 2 The image shown is an endoscopic camera element of a remote monitoring device for resin unloading in a nuclear power plant, as described in this utility model.

[0015] Figure 3 The diagram shown is a structural diagram of the free end clamp of a remote monitoring device for resin unloading in a nuclear power plant according to this utility model.

[0016] Figure 4 The diagram shown is a structural diagram of the annular fixing clamp at the fixed end of a remote monitoring device for resin unloading in a nuclear power plant, as described in this utility model.

[0017] Figure 5 The diagram shown is a structural diagram of the fixed end flat-head fixing clamp of a remote monitoring device for resin unloading in a nuclear power plant, as described in this utility model.

[0018] The following are the labels in the attached diagram: 1. Free end clamp; 2. Fixed end clamp; 3. Metal rod; 4. Free end caster wheel; 5. Data transmission interface; 6. Data transmission cable; 7. Endoscope-type camera; 8. Small notch in the free end clamp; 9. Large notch in the free end clamp; 10. Free end connecting screw of the metal rod; 11. Hand-tightening nut; 12. Ring clamp fastening screw; 13. Fixed end connecting nut; 14. Ring clamp rubber pad; 15. Ring clamp connecting screw; 16. Flat head clamp rubber pad; 17. Flat head clamp connecting screw. Detailed Implementation

[0019] To address the issue that workers need to repeatedly visit the inspection port in high-radiation-dose areas to observe the resin discharge during existing KBE resin unloading processes, this invention provides a remote monitoring device for nuclear power plant resin unloading. Figures 1-5 As shown, the device consists of a double-ended fixed bracket and an endoscope-type camera device. The double-ended fixed bracket includes a freely movable metal rod 3. One end of the metal rod 3 is equipped with a free-end universal wheel 4, which is connected to the hand-tightening nut 11 on the free-end clamp 1 via a free-end connecting screw 10. The other end of the metal rod 3 is equipped with a fixed-end connecting nut 13, which can be connected to a detachable and replaceable fixed-end clamp 2. The endoscope-type camera device includes a transmission cable 6 and endoscope-type cameras 7 and a data transmission interface 5 located at both ends of the transmission cable 6.

[0020] The free end clamp 1 of the double-ended fixed bracket is provided with a small notch 8 and a large notch 9. Two detachable and replaceable fixed end clamps 2 are designed according to the main usage environment of remote monitoring: an annular clamp that can be fixed to a cylindrical pipe and a flat-head clamp that can be fixed to a protruding surface. Annular clamp rubber pads 14 and flat-head clamp rubber pads 16 are respectively provided inside the clamps of the annular clamp and the flat-head clamp to enhance the friction of the clamps and better grip the desired position. The annular clamp is provided with an annular clamp connecting screw 15 that connects to the fixed end connecting nut 13 of the metal rod 3. The annular clamp connecting screw 15 also enables the annular clamp to have a directional function, allowing it to swing up and down. The annular clamp provides gripping force through the annular clamp fastening screw 12. If the annular clamp becomes loose and the gripping force is insufficient after repeated opening and closing, the annular clamp fastening screw 12 can be tightened with a Phillips screwdriver to strengthen the gripping force of the annular clamp.

[0021] Example 1: The working process of using the device described in this utility model is as follows:

[0022] First, clamp the fixed end clip 2 to the metal plate bracket near the resin unloading inspection hole;

[0023] The second step is to clamp the endoscope-type camera 7 onto the free end clamp 1 and place the camera into the small notch 8 of the free end clamp. If the light is dim, you can also fix the flashlight onto the large notch 9 of the free end clamp at the same time.

[0024] The third step is to adjust the metal rod 3 and the free end universal wheel 4 to align the endoscope-type camera 7 fixed on the free end clamp 1 directly above the resin unloading viewing hole.

[0025] Fourth, staff should extend the transmission cable 6 as far away as possible from the resin unloading inspection hole and radiation hotspots, or hide outside the physical barrier of the factory building, and then connect the data transmission interface 5 to an electronic device such as a mobile phone to receive images transmitted by the endoscope-type camera 7; if there is no protruding platform near the resin unloading inspection hole that can be fixed by the flat-head fixing clamp 2, the fixing end connecting nut 13 can be rotated to remove it and replaced with a ring fixing clamp, and the ring clamp connecting screw 15 can be rotated into the fixing end connecting nut 13; after using this utility model, the dosage of each component of this product should be tested. Most of the components of this product are detachable, and the components carrying the dosage can be removed and disposed of.

[0026] It should be noted that the combination of the technical features in the embodiments of this utility model is not limited to the combination methods recorded in the embodiments of this utility model or the combination methods recorded in specific embodiments. All technical features recorded in this utility model can be freely combined or combined in any way, unless there is a contradiction between them.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nuclear power plant resin unloading remote monitoring device, characterized by, The device comprises a double-end fixed support and an endoscope type camera device, the double-end fixed support comprises a freely movable metal rod (3), one end of the metal rod (3) is provided with a free end universal wheel (4), the free end universal wheel (4) is connected with a hand tight nut (11) on the free end clamp (1) through a metal rod free end connecting screw (10), the other end of the metal rod (3) is provided with a fixed end connecting nut (13) capable of being connected with a detachable and replaceable fixed end clamp (2); the endoscope type camera device comprises a transmission wire (6) and an endoscope type camera (7) and a data transmission interface (5) at both ends of the transmission wire (6).

2. A nuclear power plant resin unloading remote monitoring device according to claim 1, characterized in that, The free end clamp (1) is provided with a free end clamp small gap (8) and a free end clamp large gap (9), the free end clamp small gap (8) can install the endoscope type camera (7), and the free end clamp large gap (9) can install a flashlight.

3. A nuclear power plant resin unloading remote monitoring device according to claim 1, characterized in that, Two kinds of detachable and replaceable fixed end clamps (2) are designed according to the main use environment of the device, one is a ring-shaped fixed clamp capable of being fixed on a cylindrical pipeline, and the other is a flat head fixed clamp capable of being fixed on a protruding plane.

4. A nuclear power plant resin unloading remote monitoring device according to claim 3, characterized in that, The ring-shaped fixed clamp is provided with a ring-shaped clamp connecting screw (15) connected with the fixed end connecting nut (13) of the metal rod (3), and the ring-shaped clamp connecting screw (15) also enables the ring-shaped fixed clamp to have a steering function and can swing up and down.

5. A nuclear power plant resin unloading remote monitoring device according to claim 3, wherein, The ring-shaped fixed clamp provides the clamping force of the clamp through a ring-shaped clamp fastening screw (12), when the ring-shaped fixed clamp is relaxed and the clamping force is insufficient, the ring-shaped clamp fastening screw (12) can be fastened through a cross screwdriver to strengthen the clamping force of the ring-shaped fixed clamp.

6. A nuclear power plant resin unloading remote monitoring device according to claim 3, wherein, The flat head fixed clamp is provided with a flat head clamp connecting screw (17) connected with the fixed end connecting nut (13) of the metal rod (3).

7. A nuclear power plant resin unloading remote monitoring device according to claim 3, wherein, A ring-shaped clamp rubber pad (14) is arranged in the clamp of the ring-shaped fixed clamp; a flat head clamp rubber pad (16) is arranged in the clamp of the flat head fixed clamp.

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