A kind of loading emulsion explosive liquid ammonium delivery hose device

Abstract

The utility model belongs to dangerous chemical conveying device technical field, concretely relates to a crane pipe device for mixed loading emulsion explosive liquid ammonium conveying, it includes support stand and installs crane pipe body on support stand, crane pipe body includes crane pipe inner arm and crane pipe outer arm that connect in proper order through swivel joint, the entrance end of crane pipe inner arm is provided with the crane pipe import pipe for connecting liquid ammonium supply pipeline, the utility model discloses preheating crane pipe body by the steam before unloading through cleaning mechanism, effectively prevents the crystallization or freezing of low temperature liquid ammonium in the pipeline, guarantees the smooth of conveying flow process, eliminates the safety risk such as pipeline pressure abnormality that can be caused by the blockage, can also utilize the steam to the crane pipe body inside and carry out the purging after unloading simultaneously, makes the liquid ammonium that remains in the internal flow passage of crane pipe body can be thoroughly removed, effectively avoids the corrosion of residual medium to the pipeline and improves the conveying efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of hazardous chemical conveying devices, specifically relating to an loading arm device for conveying mixed emulsion explosive liquid ammonium. Background Technology

[0002] In the production of mixed emulsion explosives, liquid ammonium is a key raw material used to adjust the pH value and improve the emulsification effect. However, liquid ammonium itself is highly corrosive, has a low boiling point, and is highly volatile. Once a leak occurs, the volatilized ammonia gas is not only toxic but also flammable and explosive, which can easily lead to serious safety accidents such as poisoning, fire, and even explosion.

[0003] Currently, loading arms are widely used in the transport of mixed emulsion explosives containing liquid ammonium. However, they present significant problems in practical use: liquid ammonium is prone to crystallization due to temperature drops during transport, especially before and after unloading from the loading arm and the liquid ammonium transport vehicle. Residual liquid ammonium inside the pipe is difficult to completely remove, leading to crystal buildup on the inner wall. This crystallization not only affects transport efficiency but can also clog pipelines, damage equipment, and even increase the risk of leakage due to abnormal local pressure, posing a serious threat to production safety. Therefore, we propose a loading arm device suitable for transporting mixed emulsion explosives containing liquid ammonium. Utility Model Content

[0004] The purpose of this invention is to provide an loading arm device for conveying mixed emulsion explosive liquid ammonium, so as to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions: An loading arm device for conveying mixed emulsion explosive liquid ammonium includes a support column and a loading arm body mounted on the support column. The loading arm body includes an inner loading arm and an outer loading arm connected in sequence by a rotary joint. The inlet end of the inner loading arm is provided with a loading arm inlet pipe for connecting to a liquid ammonium supply pipeline, and the outlet end of the outer loading arm is provided with a loading arm outlet pipe for connecting to a liquid ammonium transport vehicle. A cleaning mechanism is installed at one port of the loading arm outlet pipe. The cleaning mechanism includes a metal hose body, a steam inlet valve, and a steam outlet valve. The inlet end of the metal hose body is connected to an external steam source through the steam inlet valve, and the outlet end of the metal hose body is connected to the internal flow channel of the loading arm body through the steam outlet valve. The metal hose body performs preheating before unloading and purging of residual liquid ammonium after unloading by introducing steam into the internal flow channel of the loading arm body.

[0006] The beneficial effects of this utility model are: This invention uses a cleaning mechanism to preheat the loading arm body with steam before unloading, effectively preventing the crystallization or freezing of cryogenic liquid ammonium in the pipeline, ensuring smooth transport flow, and eliminating safety risks such as abnormal pipeline pressure caused by blockage. At the same time, steam can be used to purge the inside of the loading arm body after unloading, so that the residual liquid ammonium in the flow channel inside the loading arm body can be completely removed, effectively avoiding corrosion of the pipeline by residual media and improving transport efficiency. Attached Figure Description

[0007] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a first-view schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view schematic diagram of the overall structure of this utility model; Figure 3 This is an enlarged schematic diagram of the cleaning mechanism structure of this utility model; Figure 4 This is a utility model Figure 3 A magnified view of part A in the diagram.

[0008] The following labels are used in the attached diagram: 1. Support column; 2. Loading arm body; 21. Inner arm of loading arm; 22. Outer arm of loading arm; 23. Loading arm inlet pipe; 24. Loading arm outlet pipe; 3. Cleaning mechanism; 31. Metal hose body; 32. Steam inlet valve; 33. Steam outlet valve; 34. Control valve; 4. Support rod; 41. Rotary cylinder; 42. Cylinder shaft; 43. Connecting plate. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0010] like Figures 1 to 4As shown, this utility model provides an loading arm device for conveying mixed emulsion explosive liquid ammonium, including: a support column 1 and a loading arm body 2 installed on the support column 1. The loading arm body 2 includes an inner loading arm 21 and an outer loading arm 22 connected in sequence by a rotary joint. The inlet end of the inner loading arm 21 is provided with a loading arm inlet pipe 23 for connecting to the liquid ammonium supply pipeline. The outlet end of the outer loading arm 22 is provided with a loading arm outlet pipe 24 for connecting to the liquid ammonium transport vehicle. A cleaning mechanism 3 is installed at one port of the loading arm outlet pipe 24. The cleaning mechanism 3 includes a metal hose body 31, a steam inlet valve 32, and a steam outlet valve 33. The inlet end of the metal hose body 31 is connected to an external steam source through the steam inlet valve 32, and the outlet end of the metal hose body 31 is connected to the internal flow channel of the loading arm body 2 through the steam outlet valve 33. The metal hose body 31 introduces steam into the internal flow channel of the loading arm body 2 to perform preheating before unloading and purging of residual liquid ammonium after unloading.

[0011] In practice, the support column 1 provides stable support to ensure that the loading arm 2 remains stable during operation. The loading arm 2 is connected to the inner arm 21 and the outer arm 22 of the loading arm through a rotary joint, which enables flexible movement and positioning and facilitates docking with the liquid ammonium transport vehicle. The cleaning mechanism 3 is designed to preheat the loading arm 2 before unloading to prevent liquid ammonium from crystallizing or clogging, and to purge residual liquid ammonium with steam after unloading to ensure pipeline cleanliness and safety and avoid environmental pollution and explosion risks. The metal hose body 31 can withstand the high temperature and pressure of steam. The steam inlet valve 32 and the steam outlet valve 33 control the inflow and outflow of steam to achieve efficient cleaning operations.

[0012] As a technical optimization of this utility model, the metal hose body 31 is made of high-temperature and corrosion-resistant stainless steel (corrugated pipe). Preferably, the metal hose body 31 is covered with a metal braided reinforcement layer.

[0013] In practice, the metal hose body 31 is made of high-temperature and corrosion-resistant stainless steel, which can resist the chemical corrosion of steam and liquid ammonium, extend its service life, and the metal braided reinforcement layer provides additional mechanical strength to prevent the hose from deforming or breaking under high-pressure steam, ensuring the reliability and safety of cleaning operations, making it suitable for harsh industrial environments and improving the durability of the device.

[0014] As a technical optimization of this utility model, a control valve 34 is provided between the metal hose body 31 and the steam outlet valve 33. The steam inlet valve 32, steam outlet valve 33, and control valve 34 are all high-temperature resistant shut-off valves, and the inner wall of the shut-off valve is coated with an anti-corrosion coating. By using a high-temperature resistant shut-off valve, it can withstand the impact of high-temperature steam, preventing valve damage. The anti-corrosion coating on the inner wall of the shut-off valve reduces corrosion and scaling, ensuring valve sealing and long service life. The control valve 34 is used to regulate steam flow and pressure, achieving precise control of the cleaning process and improving operational efficiency.

[0015] As a technical optimization of this utility model, sealing joints are provided at the connection points between the metal hose body 31 and the loading arm inlet pipe 23 and outlet pipe 24. These sealing joints utilize a fluororubber sealing structure. The sealing joints ensure a tight connection between the metal hose body 31 and the loading arm inlet pipe 23 and outlet pipe 24, preventing leakage of steam or liquid ammonium. The fluororubber sealing structure possesses excellent high-temperature resistance, corrosion resistance, and elasticity, maintaining a sealing effect under extreme conditions, preventing media leakage, and improving the safety and environmental friendliness of the device.

[0016] As a technical optimization of this utility model, the loading arm body 2 also includes a support rod 4, on which a rotary cylinder 41 is mounted. The output end of the rotary cylinder 41 is connected to a cylinder shaft 42, and a connecting plate 43 is installed at the telescopic end of the cylinder shaft 42. The support rod 4 is connected to one of the inner arm 21 and the outer arm 22 of the loading arm, and the connecting plate 43 is connected to the other of the inner arm 21 and the outer arm 22. In this solution, the support rod 4 is used to fix the rotary cylinder 41, providing it with a stable support foundation; the rotary cylinder 41 drives the connecting plate 43 to move through the telescopic and rotational movement of the cylinder shaft 42, thereby controlling the position of the outer arm 22 of the loading arm. This design allows the loading arm body 2 to flexibly adjust its angle and height, facilitating docking with liquid ammonium transport vehicles in different positions, and improving operational convenience and efficiency. Under the action of the rotary cylinder 41, the outer arm 22 of the loading arm can rotate around the rotary joint, thereby changing the position of the loading arm outlet pipe 24 so that it can accurately connect to the liquid ammonium transport vehicle. During this process, since the cleaning mechanism 3 adopts a metal hose body 31, this flexible structure allows it to move synchronously with the loading arm body 2.

[0017] The working principle of this utility model is as follows: First, the support column 1 firmly supports the entire loading arm body 2. The operator starts the positioning process by controlling the rotary cylinder 41. The cylinder shaft 42 of the rotary cylinder 41 extends and retracts and drives the connecting plate 43, which drives the outer arm 22 and the inner arm 21 of the loading arm to flexibly adjust the angle through the rotary joint, so that the outlet pipe 24 of the loading arm is accurately connected to the interface of the liquid ammonium transport vehicle. The metal hose body 31 moves synchronously with the loading arm body 2 to avoid pulling damage. After the connection is completed, the steam inlet valve 32 and the steam outlet valve 33 of the cleaning mechanism 3 are opened. External steam is introduced into the internal flow channel of the loading arm body 2 through the high temperature and corrosion resistant metal hose body 31 to preheat the inner arm 21, the outer arm 22 of the loading arm and the connecting pipe, so that the pipe wall temperature rises above the critical point of liquid ammonium crystallization. At the same time, the joint is sealed to ensure that there is no steam leakage. Next, the steam valve of the cleaning mechanism 3 is closed, and the liquid ammonium conveying operation is started. The liquid ammonium supply pipeline is connected through the loading arm inlet pipe 23. The liquid ammonium is conveyed along the flow channels of the loading arm outer arm 22, rotary joint, and loading arm inner arm 21, and finally injected into the liquid ammonium conveying vehicle through the loading arm outlet pipe 24. During the conveying process, the rotary cylinder 41 maintains the fixed state of the cylinder shaft 42 and the connecting plate 43 to ensure the stable positioning of the loading arm outer arm 22 and the loading arm inner arm 21. The steam inlet valve 32, steam outlet valve 33 and control valve 34 are kept closed to prevent liquid ammonium leakage or steam mixing. The sealing joint continuously ensures the sealing of each connection part to prevent the liquid ammonium from evaporating and causing safety risks. The preheated pipeline effectively prevents liquid ammonium from crystallizing, ensuring a smooth and efficient conveying process. After unloading is completed, close the connection valve between the liquid ammonium supply pipeline and the loading arm inlet pipe 23, and reopen the steam inlet valve 32 and steam outlet valve 33 of the cleaning mechanism 3. Introduce high-temperature steam to purge the internal flow channels of the loading arm body 2 to thoroughly remove residual liquid ammonium and prevent residual media from corroding the inner wall of the pipeline or forming crystals during the next use. After purging, close the steam valve, control the rotary cylinder 41 to drive the cylinder shaft 42 to retract, and drive the loading arm outer arm 22 and loading arm inner arm 21 to return to the initial position through the connecting plate 43. Disconnect the loading arm outlet pipe 24 from the liquid ammonium transport vehicle, check the status of each sealing joint and valve, and ensure that the device is in a safe standby state to prepare for the next operation.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A loading arm device for conveying mixed emulsion explosive liquid ammonium, comprising a support column (1) and a loading arm body (2) mounted on the support column (1), characterized in that, The loading arm body (2) includes an inner arm (21) and an outer arm (22) connected in sequence by a rotary joint. The inlet end of the inner arm (21) is provided with a loading arm inlet pipe (23) for connecting to a liquid ammonium supply pipeline. The outlet end of the outer arm (22) is provided with a loading arm outlet pipe (24) for connecting to a liquid ammonium transport vehicle. A cleaning mechanism (3) is installed at one of the ports of the loading arm outlet pipe (24). The cleaning mechanism (3) includes a metal hose body (31), a steam inlet valve (32) and a steam outlet valve (33). The inlet end of the metal hose body (31) is connected to an external steam source through the steam inlet valve (32), and the outlet end of the metal hose body (31) is connected to the internal flow channel of the loading arm body (2) through the steam outlet valve (33). The metal hose body (31) can perform preheating before unloading and purging of residual liquid ammonium after unloading by introducing steam into the internal flow channel of the loading arm body (2).

2. The loading arm device for conveying mixed emulsion explosive liquid ammonium according to claim 1, characterized in that, The metal hose body (31) is made of high temperature and corrosion resistant stainless steel, and the metal hose body (31) is covered with a metal braided reinforcement layer.

3. The loading arm device for conveying mixed emulsion explosive liquid ammonium according to claim 1, characterized in that, A control valve (34) is provided between the metal hose body (31) and the steam outlet valve (33). The steam inlet valve (32), the steam outlet valve (33) and the control valve (34) are all high-temperature resistant shut-off valves. The inner wall of the shut-off valve is provided with an anti-corrosion coating.

4. The loading arm device for conveying mixed emulsion explosive liquid ammonium according to claim 1, characterized in that, The metal hose body (31) is provided with a sealing joint at the connection between the loading arm inlet pipe (23) and the loading arm outlet pipe (24), and the sealing joint adopts a fluororubber sealing structure.

5. The loading arm device for conveying mixed emulsion explosive liquid ammonium according to claim 1, characterized in that, The loading arm body (2) also includes a support rod (4), on which a rotary cylinder (41) is provided. The output end of the rotary cylinder (41) is connected to a cylinder shaft (42), and a connecting plate (43) is installed at the telescopic end of the cylinder shaft (42).

6. The loading arm device for conveying mixed emulsion explosive liquid ammonium according to claim 5, characterized in that, The support rod (4) is connected to one of the inner arm (21) and outer arm (22) of the loading arm, and the connecting plate (43) is connected to the other of the inner arm (21) and outer arm (22).

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