Rapid fuel oil discharging system of nuclear power emergency diesel generating set

Abstract

The utility model relates to a rapid fuel oil discharging system of a nuclear power emergency diesel generating set, which comprises a main oil storage tank and a daily oil tank which are communicated through a fuel oil conveying pipeline in a diesel generating set plant, and further comprises a remote operation loop, the remote operation loop comprises a ball valve connected to a fuel oil conveying pipeline in series, an operation handle installed outside a diesel engine set workshop and used for controlling opening and closing of the ball valve, and a stainless steel flexible shaft connected with the ball valve and the operation handle. The ball valve is remotely and automatically opened or manually opened under the fire working condition, so that fuel oil in a daily oil tank is quickly discharged to a main oil storage tank, and the fire is prevented from being quickly diffused in a diesel engine unit plant. The beneficial effects are that remote operation is realized; safety and reliability are realized; installation and maintenance are convenient.

Description

[Technical Field]

[0001] This utility model relates to the field of nuclear power auxiliary system technology, specifically to a rapid fuel release system for nuclear power emergency diesel generator sets. [Background Technology]

[0002] Emergency diesel generator sets are a crucial component of nuclear power plant systems, often referred to as the last line of defense. Their safety functions require reliable operation, low failure rates, and ease of maintenance for all auxiliary equipment. The normal operation of nuclear-grade diesel generator sets is essential for the normal operation of the nuclear reactor. In the event of a fire in the diesel generator unit building, measures must be taken to control the situation and prevent the rapid spread of the fire from rendering the generator sets unusable.

[0003] This utility model is designed to meet the actual needs of rapid fuel release systems for high-power emergency diesel generator sets in nuclear power plants. [Utility Model Content]

[0004] The purpose of this invention is to provide a rapid fuel release system for nuclear power emergency diesel generator sets that is remotely operated, safe and reliable, easy to install and maintain.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is a rapid fuel release system for nuclear power emergency diesel generator sets. It includes a main fuel storage tank and a daily fuel tank connected within the diesel generator set building via fuel pipelines. It also includes a remote operation circuit, which comprises a ball valve connected in series with the fuel pipeline, an operating handle installed outside the diesel generator set building for controlling the ball valve's opening and closing, and a stainless steel flexible shaft connecting the ball valve and the operating handle. In the event of a fire, the ball valve can be remotely and automatically or manually opened to rapidly release fuel from the daily fuel tank to the main fuel storage tank, preventing the fire from spreading rapidly within the diesel generator set building.

[0006] Preferably, the ball valve is used to: remotely and automatically or manually open the ball valve in the event of a fire in the diesel generator plant to ensure that fuel is quickly released from the daily fuel tank to the main fuel tank; and remotely and automatically or manually close the ball valve in the event of no fire in the diesel generator plant to prevent fuel from being released from the daily fuel tank to the main fuel tank.

[0007] Preferably, the stainless steel flexible shaft is used to transmit torque. In the event of a fire in the diesel generator set plant, the torque is transmitted to the ball valve by operating the control handle outside the diesel generator set plant, thereby opening or closing the ball valve.

[0008] Preferably, the operating handle is used to: open the ball valve connected to the operating handle and the stainless steel flexible shaft to quickly release fuel in the daily fuel tank under fire conditions in the diesel generator plant; and close the ball valve connected to the operating handle and the stainless steel flexible shaft to prevent fuel from leaking from the daily fuel tank under non-fire conditions in the diesel generator plant.

[0009] The beneficial effects of this utility model's rapid fuel release system for nuclear power emergency diesel generator sets are: it sets up a remote operation loop, including a ball valve, a stainless steel flexible shaft, an outdoor operating handle, and connecting parts; remote operation is safe and reliable, installation is convenient, and maintenance is easy, ensuring the accessibility, safety, and timeliness of fuel release from the unit, and ensuring the safe and reliable operation of the unit. It is suitable for fuel daily tank release systems of emergency diesel generator sets for nuclear power plants or other diesel generator sets with reliability requirements. [Attached Image Description]

[0010] Figure 1 This is a schematic diagram of a rapid fuel release system for a nuclear power emergency diesel generator set.

Detailed Implementation Methods

[0011] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a complete understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific configuration and algorithm presented below, but covers any modifications, substitutions, and improvements to elements, components, and algorithms without departing from the inventive concept. In the accompanying drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring this utility model.

[0012] Example

[0013] This embodiment implements a rapid fuel release system for nuclear power emergency diesel generator sets.

[0014] This embodiment of the rapid fuel release system is designed for outdoor operation during a fire. It enables the rapid release of fuel from the daily fuel tank of a nuclear-grade emergency diesel generator set to the main fuel storage tank, preventing the rapid spread of fire within the emergency diesel generator set building and ensuring the normal functioning of the generator set. This rapid fuel release system includes a remote operating circuit comprising a ball valve, a stainless steel flexible shaft, an outdoor-mounted operating handle, and connecting components. In fire conditions, operators can remotely open the ball valve on the fuel release circuit using the outdoor-mounted operating handle, allowing fuel in the daily fuel tank to be rapidly released to the main fuel storage tank. This effectively prevents the rapid spread of fire within the diesel generator set building by quickly releasing fuel from the daily fuel tank.

[0015] Figure 1 This is a schematic diagram of a rapid fuel release system for a nuclear power emergency diesel generator set. (For example...) Figure 1 As shown, the rapid discharge system in this embodiment is equipped with a remote operation loop, including a ball valve, a stainless steel flexible shaft, an operating handle installed outdoors, and connecting parts, etc.

[0016] A ball valve is installed to open or close the fuel venting circuit. In the event of a fire in the plant, the ball valve can be opened remotely to ensure rapid fuel venting. In the absence of a fire, the valve remains closed to prevent fuel from leaking from the daily fuel tank to the main fuel storage tank.

[0017] A stainless steel flexible shaft is provided to transmit torque for remotely opening or closing the ball valve; in the event of a fire in the plant, when the operating handle is operated from outside the plant, the stainless steel flexible shaft transmits torque to the ball valve to open or close it.

[0018] An operating handle is installed outdoors (in the factory building). In the event of a fire in the factory building, the operator can operate the handle from outdoors to open the ball valve connected to the operating handle and the stainless steel flexible shaft to quickly release fuel from the fuel tank, prevent the fire from spreading rapidly, and ensure the safety of the operator. In non-fire conditions, the operating handle is in the closed position.

[0019] This embodiment of the rapid discharge system is suitable for emergency diesel generator sets used in nuclear power plants or other diesel generator set systems with high reliability requirements.

[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several improvements and additions without departing from the principle of the present utility model, and these improvements and additions should also be considered within the protection scope of the present utility model.

Claims

1. A kind of nuclear power emergency diesel generator set fuel quick discharge system, including main oil tank, daily oil tank in diesel engine set plant by fuel oil pipeline communication, it is characterized in that: It also comprises a remote operation circuit, which comprises a ball valve connected in series in the fuel oil pipeline, an operation handle installed outside the diesel engine set plant for controlling the opening and closing of the ball valve, a stainless steel flexible shaft connecting the ball valve and the operation handle, for remotely automatically or manually opening the ball valve to rapidly discharge the fuel oil in the daily-use oil tank to the main oil storage tank in the case of fire, so as to avoid the rapid spread of fire in the diesel engine set plant.

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