A heavy water transmission control device for loading and unloading machines

Abstract

The invention discloses a heavy water transmission control device for a loading and unloading machine, comprising a heavy water bucket, a drain base, a drain trap, a water inlet pipe, a water outlet pipe, a sampling pipe, a drainage pipe, a drainage station, an electronic liquid level meter and a controller. The top of the heavy water bucket is provided with a drain base, the drain base is provided with a drain trap, one side of the drain trap is provided with a water inlet pipe, the other side of the drain trap is provided with a water outlet pipe, the bottom of the drain trap is connected with a sampling pipe, the middle part of the front side of the drain trap is connected with a drainage pipe, the water inlet pipe and the water outlet pipe are both connected with the loading and unloading machine, the sampling pipe extends into the heavy water bucket, the exhaust pipe is connected with the drainage station, the interior of the drain base is penetrated with an electronic liquid level meter, the bottom of the electronic liquid level meter extends into the heavy water bucket, and the electronic liquid level meter is connected with the controller. The invention can conveniently and quickly measure the liquid level of the heavy water bucket, prevent overflow, avoid heavy water waste, cause huge losses, prevent harm to the human body, filter debris, and facilitate later cleaning and maintenance of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of drain devices, in particular to the technical field of a drain device for preventing heavy water leakage and tritium gas diffusion for replacement and maintenance of a heavy water reactor nuclear power loading and unloading machine. Background Art

[0002] Heavy water is mainly used as a moderator and coolant in nuclear reactors. It can reduce the rate of neutrons to meet the needs of the fission process, but it is harmful to humans. Therefore, heavy water cannot be leaked. Leakage can easily lead to accidents and cause great harm to the human body. Heavy water is expensive. 1g of heavy water is approximately equal to 1g of gold. Heavy water used in heavy water reactor nuclear power plants contains tritium, which is radioactive and highly soluble in water. It poses a risk of internal exposure to the human body. After the spare parts loading and unloading machine of a heavy water reactor nuclear power plant is replaced, it is necessary to perform a heavy water replacement operation on it, and not a drop of water can leak out during the drainage process to prevent internal exposure of personnel and waste of heavy water.

[0003] The existing drain device has no control system during the pumping process and cannot control the liquid level, which is prone to overflow. Leakage can easily lead to accidents and cause great harm to the human body. Heavy water is expensive, easily wasted, and inconvenient to clean and maintain. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a leak-proof drain device for replacing water after a heavy water reactor nuclear power loading and unloading machine is replaced. The device can conveniently and quickly measure the liquid level of the heavy water bucket, control the opening and closing of the sampling valve and the full liquid level sampling valve to control the liquid level, prevent overflow, avoid the loss and waste of heavy water, cause huge losses, and prevent harm to the human body. It can filter out debris in the water flow, which is convenient for the cleaning and maintenance of the pipeline in the later stage. A leak-proof drain device for replacing water after a heavy water reactor nuclear power loading and unloading machine is replaced.

[0005] To achieve the above-mentioned purpose, the present invention proposes a heavy water transmission control device for a loader and unloader, comprising a heavy water bucket, a loader and unloader, a steam trap, an inlet pipe, an outlet pipe, a sampling pipe, a drainage pipe, a drainage station, an electronic liquid level gauge and a controller, wherein the top of the heavy water bucket is provided with the loader and unloader, the loader and unloader is provided with a steam trap inside, one side of the steam trap is provided with an inlet pipe, the other side of the steam trap is provided with an outlet pipe, the bottom of the steam trap is connected with a sampling pipe, the middle part of the front side of the steam trap is connected with a drainage pipe, the inlet pipe and the outlet pipe are both connected with the loader and unloader, the sampling pipe extends into the heavy water bucket, the drainage pipe is connected with the drainage station, the interior of the loader and unloader is penetrated with an electronic liquid level gauge, the bottom of the electronic liquid level gauge extends into the heavy water bucket, and the electronic liquid level gauge is connected with a controller.

[0006] Preferably, the electronic liquid level meter is in signal communication with the water outlet pipe, sampling pipe and drain pipe.

[0007] Preferably, a liquid level sensor is provided at the bottom of the electronic liquid level gauge, a sampling valve is provided at the outlet of the water outlet pipe, a full liquid level sampling valve is provided on the sampling tube, and the liquid level sensor controls the opening and closing of the sampling valve and the full liquid level sampling valve through the controller.

[0008] Preferably, a foreign body protection plate is provided on the top of the drainage station.

[0009] Preferably, a filter screen is provided at the mouth of the water inlet pipe.

[0010] The beneficial effects of the present invention are as follows: the present invention can conveniently and quickly measure the liquid level of the heavy water bucket through the liquid level sensor on the electronic liquid level meter, and control the opening and closing of the sampling valve and the full liquid level sampling valve through the controller, so as to control the liquid level, prevent overflow, avoid the loss and waste of heavy water, cause huge losses, and prevent harm to the human body. Through the filter net, debris in the water flow can be filtered, which is convenient for the later cleaning and maintenance of the pipeline.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of a heavy water transmission control device for a loader and unloader of the present invention;

[0013] Figure 2 The present invention is a schematic diagram of the internal structure of a steam trap of a heavy water transmission control device for a loader and unloader.

[0014] In the figure: 1-heavy water bucket, 2-loading and unloading machine, 3-drainer, 4-water inlet pipe, 40-filter screen, 5-water outlet pipe, 50-sampling valve, 6-sampling tube, 60-full liquid level sampling valve, 7-drain pipe, 8-drainage station, 80-foreign matter protection plate, 9-electronic liquid level meter. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0016] See also Figure 1 and Figure 2The present invention discloses a heavy water transmission control device for a loading and unloading machine, comprising a heavy water bucket 1, a loading and unloading machine 2, a steam trap 3, an inlet pipe 4, an outlet pipe 5, a sampling pipe 6, a drainage pipe 7, a drainage station 8, an electronic liquid level meter 9 and a controller. The top of the heavy water bucket 1 is provided with the loading and unloading machine 2, the steam trap 3 is provided in the loading and unloading machine 2, one side of the steam trap 3 is provided with an inlet pipe 4, the other side of the steam trap 3 is provided with an outlet pipe 5, the bottom of the steam trap 3 is connected with a sampling pipe 6, the middle part of the front side of the steam trap 3 is connected with a drainage pipe 7, the inlet pipe 4 and the outlet pipe 5 are both connected with the loading and unloading machine, the sampling pipe 6 extends into the heavy water bucket 1, the drainage pipe 7 is connected with the drainage station 8, the inside of the loading and unloading machine 2 is penetrated with an electronic liquid level meter 9, the bottom of the electronic liquid level meter 9 extends into the heavy water bucket 1, and the electronic liquid level meter 9 is connected with a controller.

[0017] The electronic liquid level meter 9 is in signal communication with the water outlet pipe 5 , the sampling pipe 6 and the drain pipe 7 .

[0018] Among them, a liquid level sensor 90 is provided at the bottom of the electronic liquid level meter 9, a sampling valve 50 is provided at the pipe mouth of the water outlet pipe 5, and a full liquid level sampling valve 60 is provided on the sampling tube 6. The liquid level sensor 90 controls the opening and closing of the sampling valve 50 and the full liquid level sampling valve 60 through a controller.

[0019] Among them, a foreign matter prevention plate 80 is provided on the top of the drainage station 8 .

[0020] Wherein, a filter screen 40 is provided at the pipe opening of the water inlet pipe 4 .

[0021] The working process of the present invention is as follows: during the process of extracting heavy water, water comes in from the water inlet pipe 4, is filtered by the filter screen 40, impurities are blocked, and then enters the steam trap 3, the sampling valve 50 is closed, the full liquid level sampling valve 60 is opened, and the heavy water enters the heavy water bucket 1 through the sampling pipe 6. The liquid level sensor 90 senses the liquid level. When the liquid level rises to the upper limit, the controller closes the full liquid level sampling valve 60, and the heavy water enters the drainage station 8 from the drainage pipe 7 through the foreign body prevention plate 80. The heavy water is collected. After the collection is completed, the sampling valve 50 is opened, and the water flows from the outlet pipe 4 to the loading and unloading machine.

[0022] In the working process of the heavy water transmission control device of the loading and unloading machine of the present invention, the liquid level of the heavy water bucket 1 can be conveniently and quickly measured by the liquid level sensor 90 on the electronic liquid level meter 9, and the opening and closing of the sampling valve 50 and the full liquid level sampling valve 60 can be controlled by the controller, so as to control the liquid level, prevent overflow, avoid the loss and waste of heavy water, cause huge losses, and prevent harm to the human body. Through the filter net 40, debris in the water flow can be filtered, which is convenient for the cleaning and maintenance of the pipeline in the later stage.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy water transmission control device for a loading and unloading machine, characterized in that: The invention comprises a heavy water bucket (1), a loading and unloading machine (2), a steam trap (3), a water inlet pipe (4), a water outlet pipe (5), a sampling pipe (6), a drainage pipe (7), a drainage station (8), an electronic liquid level meter (9) and a controller. The top of the heavy water bucket (1) is provided with a loading and unloading machine (2), the steam trap (3) is provided inside the loading and unloading machine (2), one side of the steam trap (3) is provided with a water inlet pipe (4), the other side of the steam trap (3) is provided with a water outlet pipe (5), and the bottom of the steam trap (3) is provided with a water inlet pipe (4). A sampling tube (6) is connected, a drainage pipe (7) is connected to the middle of the front side of the steam trap (3), the water inlet pipe (4) and the water outlet pipe (5) are both connected to a loading and unloading machine, the sampling tube (6) extends into the heavy water bucket (1), the drainage pipe (7) is connected to a drainage station (8), an electronic liquid level gauge (9) is penetrated inside the loading and unloading machine (2), the bottom of the electronic liquid level gauge (9) extends into the heavy water bucket (1), and the electronic liquid level gauge (9) is connected to a controller.

2. A heavy water transmission control device for a loader and unloader as claimed in claim 1, characterized in that: The electronic liquid level meter (9) is in signal communication with the water outlet pipe (5), the sampling pipe (6) and the drainage pipe (7).

3. A heavy water transmission control device for a loader and unloader as claimed in claim 1, characterized in that: A liquid level sensor (90) is provided at the bottom of the electronic liquid level meter (9), a sampling valve (50) is provided at the outlet of the water outlet pipe (5), a full liquid level sampling valve (60) is provided on the sampling pipe (6), and the liquid level sensor (90) controls the opening and closing of the sampling valve (50) and the full liquid level sampling valve (60) through the controller.

4. A heavy water transmission control device for a loader and unloader as claimed in claim 1, characterized in that: A foreign matter prevention plate (80) is provided on the top of the drainage station (8).

5. A heavy water transmission control device for a loader and unloader as claimed in claim 1, characterized in that: A filter screen (40) is provided at the pipe opening of the water inlet pipe (4).

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