Efficient unloading station exit blowing device

Abstract

The utility model discloses a high -efficient unloading station export purging device relates to production operation process operation optimization technical field, including mounting bracket, and the mounting bracket is installed with guide and washes the component, and the guide and washes the component and includes the purging medium main pipe in, be provided with at least one branch interface on the purging medium main pipe, at least is provided with one purging branch pipe, purging branch pipe's first end is connected to the branch interface, the utility model discloses the guide and washes the point between the 8 blind plate of the unloading pipeline and hand valve on the pipe section, and the first end of purging branch pipe is connected to the branch interface, and the second end is configured as the guide and washes the point of connection to the unloading pipeline, and the purging medium (such as nitrogen) no longer needs to enter from the pipeline end, but can directly inject the problem core through the purging pipeline, compares the traditional big -flow, long -time end purging, and the nitrogen consumption amount has been saved, and the operating cost has been reduced, and the overall efficiency of unloading operation has been improved.

Description

Technical Field

[0001] This utility model relates to the field of production operation process optimization technology, specifically a high-efficiency unloading station outlet purging device. Background Technology

[0002] In the chemical, petroleum, and food industries, which involve the transportation of liquid materials, tank truck (or tank car) unloading is a routine and critical operation. After unloading, some material remains in the unloading pipeline connecting the tank truck and the material storage tank. In existing technology, after the acrylonitrile unloading station chemicals are unloaded, the unloading pipeline needs to be purged to prevent material from crystallizing and clogging the pipeline, affecting its use. The original design of the unloading crane arm had the purging port at a low position, which could not guarantee that the material on the pipeline was completely purged.

[0003] The existing patent (authorization announcement number: CN218088953U) discloses a sealed unloading arm with a submersible pump. The key technical points of the solution are: it can ensure the precise alignment of the sealing device with the tank car opening during pneumatic operation, which is convenient and quick, and solves the problem of difficult alignment of the existing swing arm unloading arm. The protective cylinder is used to prevent the pull rod and locking tongue of the oil receiving device from colliding with the tank car opening during descent. At the same time, the breather valve replenishes air into the tank in time during the unloading process to prevent negative pressure in the tank during the unloading process.

[0004] However, the above technical solutions still have certain defects. The above loading arms can only unload oily liquids and cannot unload other viscous liquids. When unloading chemicals, the purging port is at a low position, which cannot guarantee that the material in the pipeline is completely purged, causing pipeline blockage. Therefore, a high-efficiency unloading station outlet purging device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency unloading station outlet purging device to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-efficiency unloading station outlet purging device includes a mounting frame, on which a drain assembly is mounted. The drain assembly includes a main purging medium pipe, and the main purging medium pipe is provided with at least one branch interface.

[0008] At least one purge branch pipe is provided, with the first end of the purge branch pipe connected to the branch interface and the second end of the purge branch pipe configured to connect to the drain point of the unloading pipeline;

[0009] The drain point is located on the section of the unloading pipeline between the figure-eight blind flange and the hand valve.

[0010] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0011] As a further embodiment of this utility model, a control valve is provided on the purging branch pipe.

[0012] As a further improvement of this utility model: the drain point is located before the vertical pipe section that needs to be climbed on the unloading pipeline.

[0013] As a further improvement of this utility model, the mounting bracket is provided with magnetic suction blocks for fixing the mounting bracket to the metal base.

[0014] As a further improvement of this invention, it also includes a controller, which is electrically connected to the control valve.

[0015] As a further improvement of this invention, the purging medium introduced into the main purging medium pipe is nitrogen.

[0016] As a further improvement of this utility model: the mounting frame is also provided with a purging assembly, the purging assembly including a bent pipe fixedly installed at the port of the purging medium main pipe, the bent pipe being connected to a connecting pipe, the connecting pipe being connected to both a material storage tank and a reagent tank, and the bottom and top of the reagent tank being respectively connected to a discharge pipe and a vertical pipe.

[0017] As a further improvement of this utility model, the second end of the purging branch pipe is configured to be simultaneously connected to multiple drainage points of the unloading pipeline.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model places the purging point on the pipe section between the figure-eight blind flange and the hand valve on the unloading pipeline. The first end of the purging branch pipe is connected to the branch interface, and the second end is configured to connect to the purging point of the unloading pipeline. The purging medium (such as nitrogen) no longer needs to enter from the end of the pipeline, but can be directly injected into the core of the problem through the purging pipeline. Compared with the traditional high-flow, long-term end purging, it saves nitrogen consumption, reduces operating costs, and improves the overall efficiency of unloading operations.

[0020] 2. By setting multiple spray points, this utility model avoids repeatedly configuring a complete purging system for each unloading point, thus saving on equipment procurement and material costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is the drain assembly of the present invention;

[0023] Figure 3 This is the purging assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the main connector of this utility model;

[0025] Figure 5 This is an explanatory diagram of the present invention.

[0026] Figure reference numerals: 1. Mounting bracket; 2. Drainage assembly; 3. Controller; 4. Magnetic suction block; 5. Purge assembly; 21. Purge medium main pipe; 22. Control valve; 23. Purge branch pipe;

[0027] 51. Bend; 52. Connecting pipe; 53. Material storage tank; 54. Pharmaceutical tank; 55. Discharge pipe; 56. Vertical pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] In one embodiment, such as Figures 1-5 As shown, a high-efficiency unloading station outlet purging device includes a mounting frame 1, a drain assembly 2 mounted on the mounting frame 1, a purging medium main pipe 21 inside the drain assembly 2, at least one branch interface provided on the purging medium main pipe 21, and a purging component 5 also provided on the mounting frame 1.

[0030] In this embodiment, the purge medium main pipe 21 in the drain assembly 2 serves as a central distribution station, connected to the main purge medium network of the plant, such as nitrogen or compressed air. Multiple branch interfaces on this main pipe provide output points for the purge medium. At the same time, the purge assembly 5 is set up to purge different agents in batches, avoiding cross-contamination between different batches and different materials.

[0031] In one embodiment, such as Figure 2As shown, at least one purge branch pipe 23 is provided. The first end of the purge branch pipe 23 is connected to the branch interface, and the second end of the purge branch pipe 23 is configured to connect to the drain point of the unloading pipeline. The drain point is located on the pipe section between the figure-eight blind flange and the hand valve on the unloading pipeline. A control valve 22 is provided on the purge branch pipe 23, and the drain point is located before the vertical pipe section on the unloading pipeline that needs to be climbed. The purge medium introduced into the purge medium main pipe 21 is nitrogen. When purging is required... When the purging medium main pipe 21 is opened, the purging gas (such as nitrogen) flows into the purging branch pipe 23. The gas is directly injected into the pipe section behind the figure-eight blind flange through the branch pipe. The airflow will thoroughly push the liquid or gaseous residues accumulated in this dead zone towards the main flow of the pipeline and eventually into the material storage tank 53 or the designated recovery system. During gas purging, the kinetic energy and carrying force of the rising gas can more effectively lift the accumulated liquid at lower levels, achieving more thorough removal. Nitrogen is an inert gas and is widely used in the chemical industry. It can not only serve as a purging medium but also effectively isolate oxygen, preventing the formation of an explosive environment in the pipeline. It has the dual functions of purging and safety protection, preventing the accumulation of explosive gas mixtures in the pipeline behind the blind flange, eliminating a major potential ignition source. At the same time, for toxic and corrosive materials, it can prevent maintenance personnel from coming into contact with hazardous chemicals when disassembling flanges, reducing occupational health risks. In addition, the purging process only requires opening and closing valves, without the need for complex pipeline disassembly work, transforming a hazardous operation into a simple standard operation.

[0032] In one embodiment, such as Figure 1 As shown, the mounting bracket 1 is equipped with magnetic suction blocks 4 for fixing the mounting bracket 1 to the metal base; it is suitable for occasions where flexible movement between different unloading points is required, or as a temporary or emergency optimization measure. It greatly shortens the installation time and improves work efficiency.

[0033] In one embodiment, such as Figure 1 As shown, it also includes a controller 3, which is electrically connected to the control valve 22; the operator can press the start purging button on the control panel or remotely, which is automatically triggered by the stop signal of the unloading pump or the low flow signal of the pipeline flow meter, and can be automatically started according to a preset time program.

[0034] In one embodiment, such as Figure 3As shown, the mounting frame 1 is also equipped with a purging assembly 5. The purging assembly 5 includes a bent pipe 51 fixedly installed at the port of the purging medium main pipe 21. The bent pipe 51 is connected to a connecting pipe 52. The connecting pipe 52 is connected to both a material storage tank 53 and a reagent tank 54. The bottom and top of the reagent tank 54 are respectively connected to a discharge pipe 55 and a vertical pipe 56. The purging medium (such as nitrogen) enters from the purging medium main pipe 21 and changes its flow direction through the bent pipe 51 at its port. The reagent flows out from the discharge pipe 55 at the bottom of the reagent tank 54 and enters the common connecting pipe 52. Then, like the purging medium, it is transported to the material storage tank 53. When the reagent flows out, the vertical pipe allows air to enter the tank to prevent the formation of a vacuum, ensure the smooth flow of the reagent, and ensure pressure balance. If the purging medium or other gas enters the reagent tank 54 in the opposite direction, the vertical pipe can serve as an exhaust port.

[0035] In one embodiment, such as Figure 2 As shown, the second end of the purging branch pipe 23 is configured to simultaneously connect to multiple shower points of the unloading pipeline; an independent valve (manual valve or solenoid valve) can be installed on each outlet of the distribution manifold. By operating different valves, one, multiple, or all unloading branches can be selected for purging. When a certain unloading branch needs to be purged, the operator simply connects the end connector of the purging branch pipe 23 to the shower point connector on that branch. Only one connection is made at a time, achieving time-sharing reuse, which is more flexible.

[0036] The above embodiment discloses a high-efficiency unloading station outlet purging device, wherein the branch interface on the main pipe provides an output point for the purging operation. Through the purging branch pipe 23, the purging medium is guided from the main pipe to a key position: the drain point on the unloading pipeline located between the figure-eight blind plate and the hand valve. When the control valve 22 on the purging branch pipe 23 is opened, the purging medium (usually nitrogen) is directly injected into the dead zone. The pressure of the nitrogen will push the residual liquid or gas accumulated in the dead zone along the natural flow direction of the pipeline (especially by taking advantage of the connection before the vertical pipe section, and using the gas lift force to carry the accumulated liquid) into the main process pipeline, and finally into the material storage tank 53 or the recovery system. The use of nitrogen has the dual functions of purging power and inerting protection, preventing the formation of an explosive atmosphere. By configuring one purging branch pipe 23 to connect multiple drain points, one-to-many centralized purging is realized, and one system can cover the entire unloading station.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-efficiency unloading station outlet purging device, comprising a mounting frame (1), characterized in that, A drain assembly (2) is installed on the mounting bracket (1). The drain assembly (2) includes a purge medium main pipe (21), and the purge medium main pipe (21) is provided with at least one branch interface. At least one purge branch pipe (23) is provided, the first end of which is connected to the branch interface, and the second end of which is configured to be connected to the drain point of the unloading pipeline; The drain point is located on the section of the unloading pipeline between the figure-eight blind flange and the hand valve.

2. The high-efficiency unloading station outlet purging device according to claim 1, characterized in that, A control valve (22) is provided on the purging branch pipe (23).

3. The high-efficiency unloading station outlet purging device according to claim 1, characterized in that, The drain point is located before the vertical pipe section on the unloading pipeline that needs to be climbed.

4. The high-efficiency unloading station outlet purging device according to claim 1, characterized in that, The mounting bracket (1) is provided with a magnetic suction block (4) for fixing the mounting bracket (1) to the metal base.

5. The high-efficiency unloading station outlet purging device according to claim 2, characterized in that, It also includes a controller (3), which is electrically connected to the control valve (22).

6. The high-efficiency unloading station outlet purging device according to claim 1, characterized in that, The purging medium introduced into the main purging medium pipe (21) is nitrogen.

7. The high-efficiency unloading station outlet purging device according to claim 1, characterized in that, The mounting bracket (1) is also provided with a purging assembly (5). The purging assembly (5) includes a bent pipe (51) fixedly installed at the port of the purging medium main pipe (21). The bent pipe (51) is connected to a connecting pipe (52). The connecting pipe (52) is connected to a material storage tank (53) and a medicine tank (54). The bottom and top of the medicine tank (54) are respectively connected to a discharge pipe (55) and a vertical pipe (56).

8. The high-efficiency unloading station outlet purging device according to claim 1, characterized in that, The second end of the purge branch pipe (23) is configured to be connected to multiple shower points of the unloading pipeline simultaneously.

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