Internal leakage prevention pressurizing line

Abstract

The utility model relates to the field of chemical production equipment, and discloses an internal leakage prevention pressurizing line which comprises a pressurizing pipeline body and a self-adaptive pressure balance valve fixedly connected to the outer surface of the rear end of the pressurizing pipeline body, and the outer surface of the left side of the pressurizing pipeline body is fixedly connected with a second pressurizing pipe. The outer surface of the left side of the second pressurizing pipe is fixedly connected with a flow control valve. The internal leakage prevention pressurizing line comprises a pressurizing pipeline, a multi-channel parallel pressurizing device and a self-adaptive pressure balance valve, the pressurizing pipeline is connected with an outlet of a C2 vaporizer and an inlet of an acetylene hydrogenation reactor and used for introducing mixed C2 into the reactor for pressurizing, and the multi-channel parallel pressurizing device is connected with the self-adaptive pressure balance valve. The multi-channel parallel pressurizing device is arranged on a pressurizing pipeline and comprises a plurality of pressurizing channels connected in parallel, each channel is provided with an independent flow control valve and a pressure monitoring point, the pressurizing flow and pressure of each channel can be adjusted according to needs, and uniform distribution of pressure in the reactor is achieved.

Description

Technical Field

[0001] The utility model relates to the field of chemical production equipment, in particular to an internal leakage-proof pressure charging line. Background Art

[0002] In the chemical production process, the acetylene hydrogenation reactor is one of the key process equipment. Since the material contains hydrogen and acetylene, and the cut-off valve of the acetylene hydrogenation reactor is a one-way seal, there is a problem of material leakage into the reactor. The leaked material reacts in the reactor, causing the internal temperature of the reactor to rise rapidly during the start-up process, which is the so-called "flying temperature" phenomenon, seriously affecting the normal progress of the start-up process. The traditional charging line cannot effectively prevent the material from leaking into the reactor due to pressure limitations and a single charging method. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides an anti-internal leakage charging line, which has the advantages of good practicability and good anti-leakage effect to solve the above problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an anti-internal leakage charging line, comprising a charging pipeline body, and an adaptive pressure balancing valve fixedly connected to the outer surface of the rear end of the charging pipeline body, a second charging pipe fixedly connected to the left outer surface of the charging pipeline body, a flow control valve fixedly connected to the left outer surface of the second charging pipe, a first charging pipe fixedly connected to the left outer surface of the flow control valve, and an inflator fixedly connected to the left outer surface of the first charging pipe.

[0007] Preferably, the pressurized pipeline body comprises an outer protective tube, the inner wall of the outer protective tube is fixedly connected to a middle reinforced tube, and the inner wall of the middle reinforced tube is fixedly connected to an inner anti-seepage tube.

[0008] Preferably, a circular mounting hole is provided on the outer surface of the upper end of the first pressure-charging tube, and a pressure gauge is fixedly connected to the inner wall of the circular mounting hole.

[0009] Preferably, the outer protective tube is made of high-density polyethylene (HDPE), which has excellent wear resistance, weather resistance and impact resistance; the middle reinforcement tube is made of glass fiber reinforced plastic (GRP), which has high strength, high toughness and good corrosion resistance; the inner anti-seepage tube is made of polytetrafluoroethylene (PTFE), which has an extremely low friction coefficient, excellent chemical stability and good sealing performance.

[0010] Preferably, three circular holes matching the second charging tube are formed on the left outer surface of the charging line body, and the charging line body is fixedly connected to the second charging tube through the circular holes.

[0011] Preferably, the flow control valve is a solenoid valve, and the inflator is a hydraulic inflator.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides an anti-internal leakage charging line, which has the following beneficial effects:

[0014] The invention discloses an anti-internal leakage charging line, which comprises a charging pipeline, a multi-channel parallel charging device and an adaptive pressure balancing valve. The charging pipeline connects the outlet of a carbon dioxide vaporizer and the inlet of an acetylene hydrogenation reactor, and is used to introduce mixed carbon dioxide into the reactor for charging. The multi-channel parallel charging device is arranged on the charging pipeline, and comprises a plurality of parallel charging channels. Each channel is provided with an independent flow control valve and a pressure monitoring point. The charging flow and pressure of each channel can be adjusted as required to achieve uniform distribution of pressure inside the reactor. By adopting a multi-channel parallel charging structure and an adaptive pressure balancing valve, the anti-internal leakage charging line can achieve uniform distribution and stable control of pressure inside the acetylene hydrogenation reactor, and effectively prevent the occurrence of material leakage and temperature runaway. At the same time, the design of the multi-channel parallel charging device makes the charging process more flexible and reliable, and the charging strategy can be adjusted according to actual needs to improve the stability and safety of the start-up process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an anti-internal leakage charging line of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a pressure charger in a pressure charging line for preventing internal leakage according to the utility model;

[0017] Figure 3 The utility model is a structural schematic diagram of a flow control valve in an anti-internal leakage charging line.

[0018] In the figure: 1. charging pipeline body; 2. middle layer reinforcement pipe; 3. inner layer anti-seepage pipe; 4. adaptive pressure balance valve; 5. pressure gauge; 6. charger; 7. first charging pipe; 8. flow control valve; 9. second charging pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 , an anti-internal leakage charging line, comprising a charging line body 1, and an adaptive pressure balance valve 4 fixedly connected to the outer surface of the rear end of the charging line body 1, characterized in that: a second charging pipe 9 is fixedly connected to the outer surface of the left side of the charging line body 1, a flow control valve 8 is fixedly connected to the outer surface of the left side of the second charging pipe 9, a first charging pipe 7 is fixedly connected to the outer surface of the left side of the flow control valve 8, and a pressurizer 6 is fixedly connected to the outer surface of the left side of the first charging pipe 7;

[0021] The core components of the anti-internal leakage charging line include a charging pipeline body 1, an adaptive pressure balancing valve 4 and a charging device. A second charging pipe 9 is provided on the left side of the charging pipeline body 1, which is connected to the first charging pipe 7 through a flow control valve 8 and finally connected to the charger 6. The design cleverly utilizes a multi-channel parallel charging structure and cooperates with an adaptive pressure balancing valve 4 to achieve uniform distribution and stable control of the internal pressure of the reactor, effectively prevent internal leakage of materials, and improve the stability and safety of the start-up process. Before starting work, the mixed carbon dioxide at the outlet of the carbon dioxide vaporizer is introduced into the reactor inlet through the charging pipeline, and the multi-channel parallel charging device is used to adjust the charging flow and pressure of each channel to achieve uniform distribution of the internal pressure of the reactor. At the same time, the adaptive pressure balancing valve will automatically adjust the opening according to the change of the internal pressure of the reactor to ensure the stability of the pressure.

[0022] The pressurized pipeline body 1 includes an outer protective tube, the inner wall of the outer protective tube is fixedly connected with a middle reinforced tube 2, and the inner wall of the middle reinforced tube 2 is fixedly connected with an inner anti-seepage tube 3; the pressurized pipeline body 1 adopts a three-layer structural design, including an outer protective tube, a middle reinforced tube and an inner anti-seepage tube. First, the outer protective tube can effectively resist the erosion and mechanical damage of the external environment, protect the inner pipeline from damage, thereby extending the service life of the entire pressurized pipeline. Secondly, the middle reinforced tube enhances the strength and stability of the pipeline, can withstand the working pressure under high pressure and high temperature environment, prevents the pipeline from deformation and rupture, and ensures the safety and stability of the pressurization process. Finally, the inner anti-seepage tube is made of highly sealing material, which can effectively prevent internal leakage of materials and avoid production accidents and environmental pollution caused by internal leakage. In summary, the three-layer structural design of the pressurized pipeline body 1 not only improves the safety and stability of the pressurized pipeline, but also extends its service life, providing reliable guarantee for industrial production and environmental protection.

[0023] A circular mounting hole is provided on the outer surface of the upper end of the first pressure-charging pipe 7, and a pressure gauge 5 is fixedly connected to the inner wall of the circular mounting hole. The outer protective tube is made of high-density polyethylene HDPE material, which has excellent wear resistance, weather resistance and impact resistance; the middle-layer reinforcement tube 2 is made of glass fiber reinforced plastic GRP material, which has high strength, high toughness and good corrosion resistance; the inner anti-seepage tube 3 is made of polytetrafluoroethylene PTFE material, which has an extremely low friction coefficient, excellent chemical stability and good sealing performance. The left outer surface of the pressure-charging pipeline body 1 is provided with three circular holes that are compatible with the second pressure-charging pipe 9. The pressure-charging pipeline body 1 is fixedly connected to the second pressure-charging pipe 9 through the circular holes. The flow control valve 8 is an electromagnetic valve, and the inflator 6 is a hydraulic pressure-charging device.

[0024] The first pressure-charging pipe 7 is an important component of the pressure-charging line. The circular mounting hole on the outer surface of the upper end of the first pressure-charging pipe 7 cleverly integrates the pressure gauge 5, which is convenient for real-time monitoring of pressure changes during the pressure-charging process to ensure that the pressure-charging is safe and controllable. The three-layer structural design of the pressure-charging pipeline body 1 is a bright spot. The outer protective tube is made of wear-resistant, weather-resistant, and impact-resistant HDPE material, the middle-layer reinforcement tube is made of high-strength and high-toughness GRP material, and the inner-layer anti-seepage tube is made of chemically stable and excellent sealing PTFE material, which together improve the overall performance of the pressure-charging pipeline. In addition, the circular hole on the left side of the pressure-charging pipeline body 1 is adapted to connect with the second pressure-charging pipe 9, which enhances the flexibility of the pressure-charging system. The flow control valve 8 uses an electromagnetic valve, and the pressure-charging device 6 uses a hydraulic pressure-charging device, which improves the automation and reliability of the pressure-charging line. In summary, the anti-internal leakage pressure-charging line is well-designed and has excellent performance, providing stable and safe pressure-charging guarantees for industrial production.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-internal leakage charging line, comprising a charging line body (1), and an adaptive pressure balancing valve (4) fixedly connected to the outer surface of the rear end of the charging line body (1), characterized in that: The left outer surface of the charging pipeline body (1) is fixedly connected to a second charging pipe (9), the left outer surface of the second charging pipe (9) is fixedly connected to a flow control valve (8), the left outer surface of the flow control valve (8) is fixedly connected to a first charging pipe (7), and the left outer surface of the first charging pipe (7) is fixedly connected to a pressurizer (6).

2. The anti-internal leakage charging line according to claim 1, characterized in that: The pressurized pipeline body (1) comprises an outer protective tube, the inner wall of which is fixedly connected to a middle reinforced tube (2), and the inner wall of which is fixedly connected to an inner anti-seepage tube (3).

3. The anti-internal leakage charging line according to claim 1, characterized in that: A circular mounting hole is provided on the outer surface of the upper end of the first pressure charging tube (7), and a pressure gauge (5) is fixedly connected to the inner wall of the circular mounting hole.

4. The anti-internal leakage charging line according to claim 2, characterized in that: The outer protective tube is made of high-density polyethylene (HDPE) material, which has excellent wear resistance, weather resistance and impact resistance; the middle-layer reinforcement tube (2) is made of glass fiber reinforced plastic (GRP) material, which has high strength, high toughness and good corrosion resistance; the inner anti-seepage tube (3) is made of polytetrafluoroethylene (PTFE) material, which has an extremely low friction coefficient, excellent chemical stability and good sealing performance.

5. The anti-internal leakage charging line according to claim 1, characterized in that: The left outer surface of the charging line body (1) is provided with three circular holes matched with the second charging tube (9), and the charging line body (1) is fixedly connected to the second charging tube (9) via the circular holes.

6. The anti-internal leakage charging line according to claim 1, characterized in that: The flow control valve (8) is a solenoid valve, and the inflator (6) is a hydraulic inflator.

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