Structure of crane pipe for chemical material loading and unloading

Abstract

The utility model discloses a crane pipe structure for chemical material loading and unloading car, including stand and gas phase pipe subassembly, liquid phase pipe subassembly, gas phase pipe subassembly, liquid phase pipe subassembly all include fixed pipe, inner arm, outer arm and spring jar, the upper end of fixed pipe is connected inner arm through swivel joint a, and is connected through movable joint b between inner arm and outer arm, and spring jar is connected between outer arm, movable joint b for balancing the gravity of outer arm, and the outer end of outer arm is connected movable joint c, and movable joint c includes three 90 DEG's elbow c and three swivel joints c constitutes, and three elbow c are connected in series through swivel joint c and are connected to outer arm through swivel joint c and form the joint of three -dimensional activity, and movable joint b is composed of two swivel joints and a 90 DEG's elbow. Contain multiple swivel joints, can be free to change direction in three -dimensional space, in order to flexible with the butt joint of material jar, and is equipped with electric control ball valve and pressure gauge, and automatically controls pipeline opening and closing and detects whether leakage.

Description

Technical Field

[0001] This utility model relates to the field of loading arm technology, specifically to a loading arm structure for loading and unloading chemical materials. Background Technology

[0002] An arm is a retractable and movable pipe assembly, also known as a fluid loading and unloading arm. It is mainly used for loading and unloading petroleum, chemical gas and liquid. It uses a rotary joint to connect with rigid pipes and elbows to realize the transmission of media between trains, tank cars and trestle storage and transportation pipelines, replacing the old-fashioned hose connection. Compared with the old-fashioned hose, it has higher safety, flexibility and service life. The existing arm assemblies have the problem of poor flexibility. Utility Model Content

[0003] The purpose of this invention is to provide an arm-mounted loading arm structure for loading and unloading chemical materials, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an arm-mounted loading arm structure for chemical material loading and unloading vehicles, including a column and a gas phase pipe assembly and a liquid phase pipe assembly. Each gas phase pipe assembly and liquid phase pipe assembly includes a fixed pipe, an inner arm, an outer arm, and a spring cylinder. The upper end of the fixed pipe is connected to the inner arm via a rotary joint a. The inner arm and outer arm are connected via a movable joint b. The spring cylinder is connected between the outer arm and the movable joint b to balance the weight of the outer arm. The outer end of the outer arm is connected to a movable joint c. The movable joint c consists of three 90° bends c and three rotary joints c. The three bends c are connected in series via rotary joints c and connected to the outer arm via rotary joints c to form a three-dimensional movable joint. The movable joint b consists of two rotary joints and one 90° bend.

[0005] Preferably, an electrically controlled ball valve is connected to the inner arm, and the electrically controlled ball valve is used to automatically control the on / off state of the pipeline.

[0006] Preferably, the inner arm has a vertical branch pipe at its tail end, and a pressure gauge is installed on the branch pipe to detect leaks.

[0007] Compared with the prior art, the beneficial effects of this utility model are: the loading arm of this utility model includes multiple sets of rotary joints, which can freely change direction in three-dimensional space, and the rotary joints c between the three elbows at the end are connected in series, so it can be swung to any angle to flexibly dock with the material tank. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0009] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0010] In the diagram: 1. Column; 2. Fixed pipe; 3. Rotary joint a; 4. Inner arm; 5. Outer arm; 6. Spring cylinder; 7. Electro-controlled ball valve; 8. Movable joint c; 9. Movable joint b. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0012] Please see Figure 1-2 This utility model provides a technical solution: an arm-mounted loading arm structure for chemical material loading and unloading vehicles, including a column 1, a gas phase pipe assembly, and a liquid phase pipe assembly. The gas phase pipe assembly and the liquid phase pipe assembly have the same structure and each includes a fixed pipe 2, an inner arm 4, an outer arm 5, and a spring cylinder 6. The upper end of the fixed pipe 2 is connected to the inner arm 4 through a rotary joint a3. The inner arm 4 and the outer arm 5 are connected by a movable joint b9. The inner arm 4 and the outer arm 5 are rigid circular pipes of the same diameter. The movable joint b9 consists of two rotary joints and a 90° elbow, and the movable joint b9 and the rotary joint a3 form a large three-dimensional movable joint. An electrically controlled ball valve 7 is connected to the inner arm 4 for automatically controlling the pipeline opening and closing. A vertical branch pipe is provided at the tail of the inner arm 4, and a pressure gauge 10 is installed on the branch pipe for detecting whether there is a leak.

[0013] Spring cylinder 6 is connected between outer arm 5 and movable joint b9 to balance the weight of outer arm 5. The outer end of outer arm 5 is connected to movable joint c8, which consists of three 90° bends c and three rotary joints c. The three bends c are connected in series through rotary joints c and then connected to outer arm 5 to form a three-dimensional movable joint that can be tilted to any angle. The end of movable joint c8 is connected to a drop pipe, breakaway valve, dry connector, and other supporting parts for docking with the material tank.

[0014] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An arm-mounted loading arm structure for loading and unloading chemical materials, comprising a column (1) and a gas phase pipe assembly and a liquid phase pipe assembly, wherein each gas phase pipe assembly and liquid phase pipe assembly includes a fixed pipe (2), an inner arm (4), an outer arm (5), and a spring cylinder (6), wherein the upper end of the fixed pipe (2) is connected to the inner arm (4) via a rotary joint a (3), and the inner arm (4) and the outer arm (5) are connected via a movable joint b (9), and the spring cylinder (6) is connected between the outer arm (5) and the movable joint b (9) to balance the weight of the outer arm (5), characterized in that: The outer end of the outer arm (5) is connected to the movable joint c (8). The movable joint c (8) consists of three 90° bends c and three rotary joints c. The three bends c are connected in series through rotary joints c and connected to the outer arm (5) through rotary joints c to form a three-dimensional movable joint. The movable joint b (9) consists of two rotary joints and one 90° bend.

2. The loading arm structure for loading and unloading chemical materials according to claim 1, characterized in that: An electrically controlled ball valve (7) is connected to the inner arm (4), and the electrically controlled ball valve (7) is used to automatically control the opening and closing of the pipeline.

3. The loading arm structure for loading and unloading chemical materials according to claim 2, characterized in that: The inner arm (4) has a vertical branch pipe at its tail end, and a pressure gauge (10) is installed on the branch pipe. The pressure gauge (10) is used to detect leaks.

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