Test box calibrator for nuclear power plant

Abstract

The utility model discloses a nuclear power plant test box calibrator, which comprises a shell and a calibration device arranged in the shell, the calibration device comprises a battery, a light emitting diode, a buzzer and a test box jack which are sequentially connected in series, and the calibration device also comprises a voltmeter which is connected in parallel with two ends of the light emitting diode; the battery is installed in the shell, and the light emitting diode, the buzzer, the test box socket and the voltmeter are all installed on the upper surface of the shell; the test box socket is used for connection of a nuclear power plant test box. By applying the nuclear power plant test box calibrator, the adhesion condition of the button of the nuclear power plant test box can be found in advance, and similar mistaken starting events can be avoided. Reverse installation of the opening and closing button can be found in advance.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power operation and maintenance, and in particular to a nuclear power plant test box calibrator. Background Technology

[0002] During major overhauls and maintenance, nuclear power plants typically conduct a series of equipment start-up and shutdown tests to verify the operational status of the equipment. Test chambers, acting as control devices for these tests, open and close to control the on / off state of the test circuits, thereby controlling the start and end of the tests.

[0003] During a major overhaul, a nuclear power plant required equipment start-up and shutdown tests. However, an unexpected incident occurred where the test box was accidentally started immediately upon insertion. This was unforeseen and did not meet the high safety standards of the nuclear power industry. Subsequent analysis revealed that the accidental start was due to a sticking button on the test box, which caused the test circuit to immediately conduct after insertion, resulting in the immediate start-up. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a nuclear power plant test box calibrator to solve the problem that the test box fails to detect due to sticking of the closing button.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a nuclear power plant test box calibrator, including a shell and a calibration device installed in the shell. The calibration device includes a battery, a light-emitting diode, a buzzer and a test box socket connected in series. The calibration device also includes a voltmeter connected in parallel across the light-emitting diode.

[0006] The battery is installed inside the housing, and the light-emitting diode, the buzzer, the test box socket, and the voltmeter are all installed on the upper surface of the housing; the test box socket is used for connecting nuclear power plant test boxes.

[0007] In some embodiments, the calibration device further includes a self-holding relay connected to both ends of the test box socket.

[0008] In some embodiments, the housing includes a shell and a cover, the shell having a cylindrical structure and the cover being used to cover the opening of the shell;

[0009] The battery is installed inside the housing, and the light-emitting diode, the buzzer, the test box socket, and the voltmeter are all installed on the upper surface of the cover.

[0010] In some embodiments, the housing and the faceplate are connected by fasteners.

[0011] In some embodiments, the fastener includes a bolt or a screw.

[0012] In some embodiments, the calibration device further includes a self-test switch connected to both ends of the test box socket.

[0013] In some embodiments, the housing is also provided with a handle.

[0014] In some embodiments, the housing is also provided with a carrying strap.

[0015] In some embodiments, the housing is a metal housing or a plastic housing.

[0016] In some embodiments, the buzzer includes a passive buzzer.

[0017] The implementation of this utility model has the following beneficial effects: By using this nuclear power plant test box calibrator, sticking issues with the test box buttons can be detected in advance, thus avoiding similar accidental start-up events. It can also detect in advance whether the opening and closing buttons are installed backwards. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0019] Figure 1 This is a schematic diagram illustrating the application of the nuclear power plant test box calibrator in some embodiments of this utility model;

[0020] Figure 2 This is a schematic diagram of a nuclear power plant test box calibrator in some embodiments of this utility model;

[0021] Figure 3 This is a schematic diagram of a nuclear power plant test box calibrator in some other embodiments of this utility model. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0025] See Figures 1 to 2 This utility model discloses a nuclear power plant test box calibrator, including a housing 10 and a calibration device 20 installed in the housing 10. The calibration device 20 includes a battery 21, a light-emitting diode 22, a buzzer 23 and a test box socket 24 connected in series. The calibration device 20 also includes a voltmeter 25 connected in parallel across the light-emitting diode 22.

[0026] The battery 21 is installed inside the housing 10. The light-emitting diode 22, the buzzer 23, the test box socket 24 and the voltmeter 25 are all installed on the upper surface of the housing 10. The test box socket 24 is used for connecting the nuclear power plant test box 100.

[0027] During the test, the connector of the nuclear power plant test box 100 is inserted into the test box socket 24. If the circuit of the verification device 20 immediately conducts, the LED 22 lights up, the buzzer 23 sounds, and the voltmeter 25 shows a reading, then the nuclear power plant test box 100 has a stuck closing button. If there is no conduction, pressing the closing button of the nuclear power plant test box 100 (e.g., ...) Figure 1After pressing the upper button of the nuclear power plant test box 100 shown, the circuit of the calibration device 20 is turned on, the light-emitting diode 22 lights up, the buzzer 23 sounds, and the voltmeter 25 will have a reading. Then the calibration of the nuclear power plant test box 100 closing button is completed.

[0028] Press the trip button on the nuclear power plant test box 100 (e.g.) Figure 1 After pressing the down button of the nuclear power plant test box 100 shown, the circuit of the verification device 20 is disconnected, the voltmeter 25 returns to zero, and the LED 22 and the buzzer 23 are turned off, thus completing the verification of the trip button of the nuclear power plant test box 100.

[0029] In some embodiments, the nuclear power plant test kit calibrator may be configured with only LED 22, only buzzer 23, or only voltmeter 25. In some embodiments, the nuclear power plant test kit calibrator may be configured with only LED 22 and buzzer 23, only buzzer 23 and voltmeter 25, or only LED 22 and voltmeter 25. Preferably, the nuclear power plant test kit calibrator is configured with LED 22, buzzer 23, and voltmeter 25 simultaneously.

[0030] In some embodiments, the battery 21 is used to provide low-voltage power to the entire calibration device 20. The switch of the battery 21 may be fixed to the lower end of the housing 10 or exposed on the bottom outer side of the housing 10. The battery 21 may be, but is not limited to, a rechargeable battery.

[0031] In some embodiments, the light-emitting diode 22 may be, but is not limited to, an RGB light-emitting diode. Of course, the type and size of the light-emitting diode 22 can be selected and set according to actual needs, and no specific limitation is made here.

[0032] In some embodiments, the buzzer 23 includes a passive buzzer. The type and size of the buzzer 23 can be selected and set according to actual needs, and are not specifically limited here.

[0033] In some embodiments, the calibration device 20 further includes a self-holding relay 26 connected to both ends of the test box socket 24. The self-holding relay 26 may be fixed on the inner bottom wall of the housing 10. During the test, after the closing button of the nuclear power plant test box 100 is pressed, the calibration device 20 maintains the continuity of the circuit and does not need to continuously press the closing button of the nuclear power plant test box 100.

[0034] like Figure 2As shown, in some embodiments, the housing 10 includes a shell 11 and a cover 12. The shell 11 has a cylindrical structure, and the cover 12 is used to cover the opening of the shell 11. The battery 21 is installed inside the shell 11, and the light-emitting diode 22, the buzzer 23, the test box socket 24, and the voltmeter 25 are all installed on the upper surface of the cover 12. The upper surface of the cover 12 may have pre-drilled openings or mounting slots for installing the test box socket 24, the buzzer 23, the light-emitting diode 22, and the voltmeter 25.

[0035] In some embodiments, the outer casing 10 is generally a square columnar structure, with overall dimensions of 265mm in length, 185mm in width, and 80mm in height. The height of the casing 11 can be 60mm, and the height of the cover 12 can be 20mm. Of course, the dimensions of the outer casing 10 can be selected and set according to actual needs, and are not specifically limited here.

[0036] In some embodiments, the housing 11 is connected to the cover 12 by fasteners. In some embodiments, the fasteners include bolts or screws.

[0037] like Figure 3 As shown, in some embodiments, the calibration device 20 further includes a self-test switch 27 connected to both ends of the test box socket 24. If the calibration device 20 is equipped with a self-holding relay 26, the self-test switch 27 may be connected to both ends of the self-holding relay 26.

[0038] The calibration device 20 incorporates a self-test function in its circuitry. Through a self-test switch 27 and a self-test circuit, the calibrator performs a self-test of its own functionality. After the battery 21 is turned on, the self-test switch 27 controls the conduction of the self-test circuit, thus enabling the entire calibrator to conduct. Changes in the LED 22, buzzer 23, and voltmeter 25 can be observed, completing the self-test of the calibrator. Before calibrating the nuclear power plant test box 100, the calibrator can be self-tested to ensure it is functioning correctly. Afterward, the self-test switch 27 is turned off, and the calibration of the nuclear power plant test box 100 is then performed, thus avoiding false positives. The self-test switch 27 can be fixed to the faceplate 12 for easy operation.

[0039] In some embodiments, the housing 10 is also provided with a handle for easy carrying and transportation.

[0040] In some embodiments, the housing 10 is also provided with a shoulder strap for easy carrying.

[0041] In some embodiments, the outer casing 10 is a metal casing or a plastic casing. For example, the outer casing 10 may be made of stainless steel or aluminum alloy. Alternatively, the outer casing 10 may be made of a rigid insulating material, such as phenolic plastic, polyurethane plastic, epoxy plastic, unsaturated polyester plastic, furan plastic, silicone resin, acrylic resin, and modified resins thereof. Of course, the material used to manufacture the outer casing 10 can be selected according to actual needs, and no specific limitation is made here.

[0042] The application of this nuclear power plant test box calibrator has the following beneficial effects: 1. Early detection of button sticking in nuclear power plant test box 100: After inserting nuclear power plant test box 100, if there is sticking of the closing button, the circuit of calibrator 20 will be immediately turned on and an audible and visual alarm will be triggered, which can detect abnormalities in nuclear power plant test box 100 in advance and avoid similar false start events.

[0043] 2. Early detection of reversed circuit breaker buttons: Due to the symmetrical structure of the nuclear power plant test box 100, the closing and opening buttons may be reversed after each disassembly and verification. Before using the nuclear power plant test box 100, the correctness of the closing and opening buttons can be verified.

[0044] 3. Low voltage safety: The entire circuit of the calibration device 20 uses a low-voltage battery 21, which is lower than the safe voltage for the human body, thus ensuring safety.

[0045] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A nuclear power plant test kit calibrator, characterized in that, The device includes a housing (10) and a calibration device (20) installed in the housing (10). The calibration device (20) includes a battery (21), a light-emitting diode (22), a buzzer (23) and a test box socket (24) connected in series. The calibration device (20) also includes a voltmeter (25) connected in parallel across the light-emitting diode (22). The battery (21) is installed inside the housing (10), and the light-emitting diode (22), the buzzer (23), the test box socket (24) and the voltmeter (25) are all installed on the upper surface of the housing (10); the test box socket (24) is used for connecting the nuclear power plant test box (100).

2. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The calibration device (20) also includes a self-holding relay (26) connected to both ends of the test box socket (24).

3. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The outer casing (10) includes a shell (11) and a cover (12). The shell (11) has a cylindrical structure, and the cover (12) is used to cover the opening of the shell (11). The battery (21) is installed inside the housing (11), and the light-emitting diode (22), the buzzer (23), the test box socket (24) and the voltmeter (25) are all installed on the upper surface of the cover (12).

4. The nuclear power plant test kit calibrator according to claim 3, characterized in that, The housing (11) and the face cover (12) are connected by fasteners.

5. The nuclear power plant test kit calibrator according to claim 4, characterized in that, The fasteners include bolts or screws.

6. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The calibration device (20) also includes a self-test switch (27) connected to both ends of the test box socket (24).

7. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The outer casing (10) is also provided with a handle.

8. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The outer shell (10) is also provided with a carrying strap.

9. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The outer casing (10) is a metal casing or a plastic casing.

10. The nuclear power plant test kit calibrator according to claim 1, characterized in that, The buzzer (23) includes a passive buzzer.

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