Temperature monitoring sensing device for electrical penetration assembly of containment vessel of nuclear power plant

Abstract

The utility model provides a temperature monitoring sensing device for a containment electrical penetration assembly of a nuclear power plant, which comprises a penetration assembly cylinder, a plurality of conductor assemblies, an acquisition antenna, a wireless temperature sensor, a collector and a display device, and is characterized in that the plurality of conductor assemblies penetrate through the penetration assembly cylinder; the wireless temperature sensor is installed on the conductor assembly. The acquisition antenna is arranged at the part, exposed outside the penetration piece cylinder, of the conductor assembly and is electrically connected with the collector; the collector is electrically connected with the display device. According to the temperature monitoring sensing device applied to the containment electrical penetration assembly of the nuclear power plant provided by the utility model, contact type temperature measurement is adopted, the operation temperature of a conductor assembly in the containment electrical penetration assembly can be accurately detected, and measurement data are transmitted out from the sealed penetration assembly cylinder in a wireless manner; and early warning information is sent out when the operating temperature of the conductor assembly is too high.

Description

Technical Field

[0001] The utility model relates to the field of temperature monitoring, and specifically to a temperature monitoring and sensing device applied to the electrical penetration of the containment vessel of a nuclear power plant. Background Art

[0002] Existing products on the market for directly measuring the temperature of the cable assembly of the electrical penetration of the containment vessel of a nuclear power plant are in a wired form, such as K-type thermocouples. The assembly is cumbersome and there is a risk of seal failure. The temperature monitoring and sensing device applied to the electrical penetration of the containment vessel of a nuclear power plant involved in the utility model is a wireless temperature sensing system. The penetration cylinder itself is a metal sealing structure, which has a shielding effect on the propagation of electromagnetic waves. The utility model utilizes the propagation characteristics of electromagnetic waves. At the same time, a corresponding wireless temperature sensor is designed, which can smoothly transmit the wireless signal of the sensor located inside the penetration cylinder and be received by the acquisition antenna located outside the penetration cylinder, and then transmitted to the collector for analysis and processing.

[0003] There is also a technical solution on the market. The monitored temperature is the temperature of the nitrogen gas filled inside the penetration. By using the interface of the pressure gauge, it contacts the internal nitrogen gas, and then the nitrogen gas temperature is collected. The temperature sensor adopts a thermal resistance and active method (such as battery power supply). However, nitrogen itself is not a good heat conductor, and the monitoring of nitrogen gas temperature has a large lag in the temperature monitoring of the heat source (i.e., the conductor assembly) of the penetration. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide a temperature monitoring and sensing device for the electrical penetration of the containment vessel of a nuclear power plant.

[0005] According to a temperature monitoring and sensing device for the electrical penetration of the containment vessel of a nuclear power plant provided by the utility model, it includes a penetration cylinder 6, a conductor assembly 3, an acquisition antenna, a wireless temperature sensor, a collector, and a display device, wherein:

[0006] A plurality of the conductor assemblies 3 are provided, and the plurality of conductor assemblies 3 penetrate through the penetration cylinder 6;

[0007] The wireless temperature sensor is installed on the conductor assembly 3;

[0008] The acquisition antenna is arranged on the part of the conductor assembly 3 exposed outside the penetration cylinder 6 and is electrically connected to the collector;

[0009] The collector is electrically connected to the display device.

[0010] Preferably, the acquisition antenna adopts a conformal design and is installed in cooperation with the conductor assembly 3.

[0011] Preferably, the collector 7 is a multi-port collector.

[0012] Preferably, the collector 7 has 16 ports.

[0013] Preferably, a seal is provided between the through-piece cylinder 6 and the conductor assembly 3.

[0014] Preferably, a number of openings are provided on the conductor assembly 3, and the wireless temperature sensors are installed in the openings.

[0015] Preferably, the collecting antenna is bundled and fixed to the conductor assembly 3.

[0016] Preferably, the wireless temperature sensors are evenly distributed on the conductor assembly 3 along the length direction of the through-piece cylinder 6.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] 1. The temperature monitoring and sensing device applied to the electrical penetration of the nuclear power plant containment provided by the present utility model has a wireless design for the temperature sensor, and there is no need to wire inside and outside the through-piece cylinder, and there is no risk of seal leakage of the through-piece cylinder.

[0019] 2. The temperature monitoring and sensing device applied to the electrical penetration of the nuclear power plant containment provided by the present utility model has a small sensor size, a simple structure, and is convenient to install.

[0020] 3. The structure of the present utility model is reasonable and easy to use, and can overcome the defects of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present utility model will become more apparent:

[0022] Figure 1 and 2 is a schematic diagram of the temperature monitoring and sensing device applied to the electrical penetration of the nuclear power plant containment provided by the present utility model.

[0023] Figure 3 is a schematic diagram of the internal structure of the through-piece of the temperature monitoring and sensing device provided by the present utility model.

[0024] Figure 4 is a perspective view of the through-piece of the temperature monitoring and sensing device provided by the present utility model.

[0025] In the figure:

[0026] Wireless temperature sensor 1

[0027] Wireless temperature sensor 2

[0028] Conductor assembly 3

[0029] Collecting antenna 4

[0030] Collecting antenna 5

[0031] Penetration piece cylinder 6

[0032] Collector 7

[0033] Display device 8 Specific embodiments

[0034] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0035] As Figures 1 to 4 shown, a temperature monitoring and sensing device applied to the electrical penetration piece of the containment of a nuclear power plant according to the present utility model includes wireless temperature sensors 1 and 2, a conductor assembly 3, collecting antennas 4 and 5, a penetration piece cylinder 6, a collector 7, and a display device 8. Among them, the wireless temperature sensors 1 and 2 are wireless temperature sensors with optimized external dimensions; the collecting antennas 4 and 5 adopt a conformal design and are installed in cooperation with the conductor assembly 3; the collector 7 is designed with multiple ports to adapt to the application scenarios of assembling multiple groups of conductor assemblies. The display device 8 has certain edge computing capabilities, real-time temperature curves, and alarm capabilities, etc. These capabilities are relatively mature in the prior art and will not be elaborated here.

[0036] Furthermore, the wireless temperature sensors 1 and 2 adopt a passive design with a service life exceeding 10 years. The collecting antennas 4 and 5 adopt a conformal design and can be conveniently installed on the part of the conductor assembly exposed outside the penetration piece cylinder, and are fixed by bundling, which is convenient for disassembly and assembly. The collector 7 is designed with multiple ports, a total of 16 ports, meeting the requirements of the vast majority of the quantity and models of conductor assemblies.

[0037] Specifically, in one embodiment, as Figure 2 shown, for the temperature monitoring and sensing device applied to the electrical penetration piece of the containment of a nuclear power plant, the wireless temperature sensors are installed on the conductor assembly inside the penetration piece cylinder. There are five sensors, evenly distributed. At the same time, similar sensors are also installed at both ends of the conductor assembly outside the cylinder to monitor the external temperature. The wireless temperature signals emitted by them can be received by the collecting antennas outside the cylinder and output to the collector, and after being parsed, they are displayed on the display device. The platform has certain edge computing capabilities, real-time temperature curves, and alarm capabilities.

[0038] The penetration piece is a key component for the external transmission of electric power in a nuclear power plant. It conducts a large current and has a high lifespan requirement. When the conductor assembly operates, it is a heat source, and its abnormal heating will affect the service life and even the operation safety. The temperature monitoring and sensing device applied to the electrical penetration piece of the containment of a nuclear power plant provided by the present utility model adopts contact temperature measurement, can accurately detect the operating temperature of the conductor assembly in the electrical penetration piece of the containment, and transmits the measurement data out of the sealed penetration piece cylinder body in a wireless form; and issues a warning message when the operating temperature of the conductor assembly is too high. There is no need to wire inside and outside the penetration piece cylinder body, and there is no risk of leakage of the seal of the penetration piece cylinder body. The whole system has a simple structure and is convenient to install, and can overcome the defects of the existing technical solutions.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0040] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A temperature monitoring and sensing device for the electrical penetration of the containment of a nuclear power plant, characterized in that, It includes a penetration tube body (6), a conductor assembly (3), a collecting antenna, a wireless temperature sensor, a collector, and a display device, wherein: A plurality of the conductor assemblies (3) are provided, and the plurality of conductor assemblies (3) penetrate through the penetration tube body (6); The wireless temperature sensor is installed on the conductor assembly (3); The collecting antenna is arranged on the part of the conductor assembly (3) exposed outside the penetration tube body (6) and is electrically connected to the collector; The collector is electrically connected to the display device.

2. The temperature monitoring and sensing device for the electrical penetration of the containment of a nuclear power plant according to claim 1, characterized in that The collecting antenna adopts a conformal design and is installed in cooperation with the conductor assembly (3).

3. The temperature monitoring and sensing device for the electrical penetration of the containment vessel of a nuclear power plant according to claim 1, characterized in that, The collector (7) is a multi-port collector.

4. The temperature monitoring and sensing device for the electrical penetration of the containment of a nuclear power plant according to claim 3, characterized in that, The collector (7) has 16 ports.

5. The temperature monitoring and sensing device for the electrical penetration of the containment of a nuclear power plant according to claim 1, characterized in that, A sealing is provided between the penetration tube body (6) and the conductor assembly (3).

6. The temperature monitoring and sensing device for the electrical penetration of the containment of a nuclear power plant according to claim 1, characterized in that, A number of openings are provided on the conductor assembly (3), and the wireless temperature sensor is installed in the openings.

7. The temperature monitoring and sensing device for the containment electrical penetration of a nuclear power plant according to claim 1, characterized in that, The collecting antenna is bundled and fixed on the conductor assembly (3).

8. The temperature monitoring and sensing device for the containment electrical penetration of a nuclear power plant according to claim 1, characterized in that, The wireless temperature sensors are evenly distributed on the conductor assembly (3) along the length direction of the penetration tube body (6).

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