Nitrogen replacement and filling device for carbon steel tank container

Abstract

A nitrogen replacement and filling device for a carbon steel tank-type container includes a connecting flange and one end of a connecting pipe D. The other end of connecting pipe D is connected to connecting pipes A, B, and C via a four-way fitting. The free ends of connecting pipes A, B, and C are connected to ball valves A, B, and C, respectively. A pressure gauge is connected to ball valve A. A nitrogen cylinder and a vaporizer are mounted on a traveling mechanism. The nitrogen cylinder, vaporizer, and ball valve B are connected by pipelines. This invention improves the efficiency of nitrogen replacement and ensures accurate nitrogen filling pressure inside the tank.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing, and in particular to a nitrogen replacement and nitrogen filling device. Background Technology

[0002] During the production of carbon steel tank containers, due to the different transport media, the quality requirements inside the tank are relatively high. It is required that the inside of the carbon steel tank container remain free from corrosion for a long period of time after production. Therefore, it is necessary to replace the inside of the carbon steel tank container with nitrogen to reduce the humidity and oxygen content inside the tank and ensure that the inside of the tank does not rust for a long time.

[0003] Currently, nitrogen purging inside carbon steel tank containers involves hoisting the container to a fixed nitrogen source, connecting nitrogen pipelines via air valves or manholes, and then purging with nitrogen. However, this method has several drawbacks: it requires repeated hoisting of the container, wasting labor costs; the nitrogen pressure cannot be accurately measured, often resulting in excessive pressure triggering the safety valve; and it wastes nitrogen, increasing costs. Utility Model Content

[0004] The purpose of this invention is to provide a nitrogen replacement and filling device for carbon steel tank containers, which improves the efficiency of nitrogen replacement and ensures accurate nitrogen filling pressure inside the tank.

[0005] This utility model includes a connecting flange, a connecting pipe D, a pipe fitting tee, a connecting pipe A, a connecting pipe B, a connecting pipe C, a ball valve A, a ball valve B, a ball valve C, a pressure gauge, a nitrogen cylinder, a vaporizer, a traveling mechanism, and pipelines.

[0006] The connecting flange is connected to one end of connecting pipe D. The other end of connecting pipe D is connected to connecting pipes A, B, and C via a four-way fitting. The free ends of connecting pipes A, B, and C are connected to ball valves A, B, and C, respectively. A pressure gauge is connected to ball valve A. The nitrogen cylinder and vaporizer are mounted on the traveling mechanism, and the nitrogen cylinder, vaporizer, and ball valve B are connected by pipelines.

[0007] Preferably, the walking mechanism includes a positioning plate, a support plate, and casters. The casters are located on the lower part of the support plate, and the positioning plate is fixed on the support plate to secure the nitrogen cylinder and liquefier.

[0008] Preferably, a push handle is fixed on one side of the walking mechanism.

[0009] Compared with the prior art, this utility model has the following advantages: it improves the efficiency of nitrogen replacement and ensures accurate nitrogen filling pressure inside the tank. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is the front view of the present invention;

[0012] Figure 2 This is a front view of the nitrogen cylinder and the walking mechanism of this utility model;

[0013] Figure 3 This is a front view of the carburetor and traveling mechanism of this utility model;

[0014] In the diagram: 1-Connecting flange, 2-Connecting pipe D, 3-Pipe fitting tee, 4-Connecting pipe A, 5-Connecting pipe B, 6-Connecting pipe C, 7-Ball valve A, 8-Ball valve B, 9-Ball valve C, 10-Pressure gauge, 11-Support plate, 12-Push handle, 13-Cast wheel, 14-Positioning plate, 15-Nitrogen cylinder, 16-Vaporizer, 17-Pipeline. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Example 1

[0017] exist Figures 1 to 3 In the schematic diagram of this utility model, connecting flange 1 and one end of connecting pipe D2 are connected. The other end of connecting pipe D is connected to connecting pipe A4, connecting pipe B5, and connecting pipe C6 respectively via pipe fitting tee 3. The free ends of connecting pipes A, B, and C are connected to ball valves A7, B8, and C9 respectively. Pressure gauge 10 is connected to ball valve A. A push handle 12 is fixed on one side of support plate 11, and casters 13 are located at the lower part of the support plate. A positioning plate 14 is fixed on the support plate to fix the nitrogen cylinder and liquefier. Nitrogen cylinder 15 and vaporizer 16 are placed on the support plate and fixed by the positioning plate. The nitrogen cylinder, liquefier, and ball valve B are connected by pipe 17.

[0018] In use, this utility model moves the nitrogen replacement and filling device to the vicinity of the carbon steel tank container by pushing the handrail through the walking mechanism. The ball valve B is connected to the nitrogen cylinder and vaporizer through the pipeline, and the carbon steel tank container is connected together through the connecting flange. After closing the ball valves A and C, the nitrogen cylinder, vaporizer and ball valve B are opened to fill the tank with nitrogen from the nitrogen cylinder for nitrogen replacement. After the corresponding nitrogen replacement dew point and oxygen content index requirements are met, nitrogen filling continues. The ball valve A is opened, and the pressure of the nitrogen filling in the tank is measured by the pressure gauge. After the pressure value required by the customer is reached, the ball valve B is closed to stop nitrogen filling.

[0019] If the nitrogen pressure inside the tank exceeds the required value, close ball valve B and open ball valve C to release the excess nitrogen inside the tank, reduce the pressure to the specified value, and then close ball valve C.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A nitrogen replacement and filling device for a carbon steel tank container, mainly comprising a connecting flange, a connecting pipe D, a pipe fitting tee, a connecting pipe A, a connecting pipe B, a connecting pipe C, ball valve A, ball valve B, ball valve C, a pressure gauge, a nitrogen cylinder, a vaporizer, a traveling mechanism, and pipelines, characterized in that: The connecting flange is connected to one end of the connecting pipe D. The other end of the connecting pipe D is connected to the connecting pipe A, connecting pipe B, and connecting pipe C respectively through the pipe fitting tee. The free ends of the connecting pipes A, B, and C are connected to the ball valves A, B, and C respectively. The pressure gauge is connected to the ball valve A. The nitrogen cylinder and the vaporizer are placed on the traveling mechanism. The nitrogen cylinder, the liquefier and the ball valve B are connected by pipelines.

2. The nitrogen replacement and filling device for carbon steel tank containers according to claim 1, characterized in that: The walking mechanism includes a positioning plate, a support plate, and casters. The casters are located on the lower part of the support plate, and the positioning plate is fixed on the support plate.

3. The nitrogen replacement and filling device for carbon steel tank containers according to claim 1, characterized in that: A push handle is fixed on one side of the walking mechanism.

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