CN209815670U - Unloading safety protection system of ammonia tank truck - Google Patents

Abstract

The utility model discloses an ammonia tank wagon safety protection system that unloads, including installing on ammonia tank wagon drain pipe be used for connecting unload ammonia crane pipe manual trip valve, be used for cutting off manual trip valve draw a line I, set up the drive assembly that acts as go-between that is used for on the ammonia tank wagon to drive I, I one end of acting as go-between is connected on the valve rod of manual trip valve, and the other end is extended and is connected with the drive assembly that acts as go-between along keeping away from manual trip valve direction. Control box cooperation liquid ammonia solenoid valve, when the flow takes place for the ammonia tank wagon, close the liquid ammonia solenoid valve before the ammonia filling riser is unloaded in the rupture, effectively prevented to unload a large amount of leakages of ammonia filling riser rupture back ammonia, effectively prevented the emergence of chemical accident.

Description

Unloading safety protection system of ammonia tank truck

Technical Field

The utility model relates to a chemical industry field specifically, relates to an ammonia tank wagon safety protection system that unloads.

Background

Ammonia is widely applied and the chemical industry field as important chemical raw materials, and in order to be convenient to transport and store, gaseous ammonia is generally pressurized or cooled to obtain liquid ammonia, then the liquid ammonia is transported to a required factory through an ammonia tank car, and ammonia in a storage tank on the ammonia tank car is unloaded to the storage tank in the factory for storage through unloading an ammonia unloading crane pipe, and is taken when required.

In the process, the ammonia leakage is caused because the connection part of the ammonia unloading arm and the storage tank on the ammonia tank car is not tightly sealed, and the connection part is adjacent to the manual cut-off valve arranged on the liquid outlet pipe of the ammonia tank car. The ammonia is extremely toxic, so that workers cannot close the manual shut-off valve to shut the valve after the ammonia leaks, and the poisoned body is killed.

In actual production, for example, in a fertilizer plant, when a fertilizer is scattered and melted to cause wet and slippery road surface or rainy and snowy weather, when an ammonia tank car stops on the road surface to unload ammonia, the ammonia unloading oil filling riser is easily broken by the sliding car or separated from the ammonia tank car liquid outlet pipe, so that a large amount of liquid ammonia in a storage tank on the ammonia tank car is rapidly sprayed out from the ammonia tank car liquid outlet pipe to cause extremely serious chemical accidents. Therefore, there is a need for improvement of the prior art to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an ammonia tank wagon safety protection system that unloads realizes particularly through following technical scheme:

an ammonia tank wagon safety protection system that unloads, including installing on ammonia tank wagon drain pipe be used for connecting unload ammonia crane pipe manual trip valve, be used for cutting off manual trip valve draw a line I, set up the drive assembly that acts as go-between that is used for on the ammonia tank wagon to drive I, I one end of acting as go-between is connected on the valve rod of manual trip valve, the other end is extended and is connected with the drive assembly that acts as go-between along keeping away from manual trip valve direction.

Further, still including setting up the liquid ammonia solenoid valve that is located manual trip valve front end on the drain pipe of ammonia tank car, being connected with the liquid ammonia solenoid valve and being used for controlling the liquid ammonia solenoid valve and opening, the controller of closing, the wireless signal receiving module who is connected with the controller, still including setting up the wireless signal transmitter who uses with the wireless signal receiving module cooperation and being used for triggering wireless signal transmitter and continuously sending wireless signal's control box.

Furthermore, the control box comprises a shell, an emergency stop switch arranged in the shell and electrically connected with the wireless signal transmitter, a pressing plate which is in single-degree-of-freedom sliding connection with the shell along the axis direction of the emergency stop switch and used for pressing the emergency stop switch, and a power supply used for supplying power to the emergency stop switch and the wireless signal transmitter.

Furthermore, two control boxes are arranged and are fixedly arranged on the ammonia tank car along the horizontal direction in opposite directions, and a pressure plate arranged on each control box is connected with a stay wire II; one end of the stay wire II is connected to the pressing plate, and the other end of the stay wire II is fixed on the ground.

Further, the stay wire II is a hemp rope or a cotton rope.

Furthermore, the stay wire driving assembly comprises a stay wire bracket fixedly arranged on the ammonia tank car, an operating handle hinged with the stay wire bracket and a reset element; stay wire I is including acting as go-between pipe and sinle silk, the sinle silk passes the inside one end of acting as go-between and connects in operating handle, the other end connect in the valve rod of manual trip valve, reset element connect in sinle silk and operating handle junction or connect in the sinle silk with the valve rod junction.

Furthermore, a rope is arranged on the operating handle, and one end of the rope is connected to the operating handle and the other end of the rope is connected to the ground.

The utility model has the advantages that: the cooperation of drive assembly that acts as go-between I unload ammonia filling riser and sealed not tight time with ammonia tank car drain pipe, the accessible is controlled the setting and is closed the manual trip valve on with ammonia tank car drain pipe at the drive assembly that acts as go-between in a distance, the effectual continuous leakage that prevents the ammonia has protected personnel's safety and the safety of environment. Control box cooperation liquid ammonia solenoid valve, when the flow takes place for the ammonia tank wagon, close the liquid ammonia solenoid valve before the ammonia filling riser is unloaded in the rupture, effectively prevented to unload a large amount of leakages of ammonia filling riser rupture back ammonia, effectively prevented the emergence of chemical accident. Other advantages of the present invention will be further described in conjunction with the following specific embodiments.

Drawings

The invention will be further described with reference to the following figures and examples:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the control box;

Detailed Description

As shown in the figure: ammonia tank wagon safety protection system that unloads, including installing on ammonia tank wagon drain pipe 1 be used for connecting unload ammonia crane pipe 2 manual cut-off valve 3, be used for cutting off manual cut-off valve 3 act as go-between I4, set up the drive assembly that acts as go-between that is used for on the ammonia tank wagon to drive I4, act as go-between I4 one end and connect on manual cut-off valve's valve rod 5, the other end is along keeping away from 3 directions extensions of manual cut-off valve and being connected with the drive assembly that acts as go-between.

In this embodiment, still including setting up the liquid ammonia solenoid valve 6 that is located the manual trip valve 3 front end on ammonia tank car drain pipe 1, be connected with 6 electricity of liquid ammonia solenoid valve and be used for controlling 6 controller 7 that open, close of liquid ammonia solenoid valve, the wireless signal receiving module 8 of being connected with controller 7, still including setting up the wireless signal transmitter 9 that uses with the cooperation of wireless signal receiving module 8 and being used for triggering wireless signal transmitter 9 and continuously send wireless signal's control box 10. The liquid ammonia solenoid valve 6 can adopt ABQ941F-40P liquid ammonia electric ball valve that shanghai Yonglong valve factory produced it can directly adopt the on-vehicle power supply of ammonia tank car to give its power supply, this is prior art.

In the present embodiment, the control box 10 includes a housing 1001, an emergency stop switch 11 disposed inside the housing 1001 and electrically connected to the wireless signal transmitter 9, a pressing plate 12 slidably connected to the housing 1001 along an axial direction of the emergency stop switch 11 in a single degree of freedom for pressing the emergency stop switch 11, and a power supply 13 for supplying power to the emergency stop switch 11 and the wireless signal transmitter 9. The pressing plate 12 may be an "L" shaped plate or a "U" shaped plate. When the device is used, the control box 10 can be held by hand, a person stands to a remote place, and when a vehicle slipping phenomenon occurs, the person quickly presses the pressing plate 12, and presses the emergency stop-start 11 to be connected. The power supply 13 continuously supplies power to the wireless signal transmitter 9 so that the wireless signal transmitter 9 continuously transmits signals. Meanwhile, after the wireless signal receiving module 8 receives the signal from the wireless signal emitter 9, the controller 7 controls the liquid ammonia electromagnetic valve 6 to be closed so as to prevent a large amount of liquid ammonia from being ejected out of the liquid storage tank of the ammonia tank car. In an embodiment, controller 7 can be singlechip or PLC controller, through singlechip or PLC controller, is one and its ripe prior art through receiving wireless signal control solenoid valve action, need not professional personnel and can use the utility model discloses, consequently, controller 7 prefers singlechip or PLC, can also select for use other controllers among the prior art certainly, no longer gives unnecessary details here.

In the embodiment, two control boxes 10 are provided, and are fixedly arranged on the ammonia tank car along the horizontal direction in opposite directions, and a pull wire II 14 is connected to a pressure plate 12 arranged on each control box; one end of the stay wire II 14 is connected to the pressing plate 12, and the other end of the stay wire II is fixed on the ground. Sometimes, the sliding range is small or the sliding is not convenient to observe, so that the liquid ammonia electromagnetic valve 6 cannot be closed timely. By adopting the preferable scheme of the embodiment, when the vehicle slides, even if the vehicle slides in a small range, the pull wire II 14 fixed on the ground can enable the emergency stop switch 11 to be closed by electric shock, and the wireless signal transmitter 9 can be continuously connected with the power supply 13 by utilizing the self-locking function of the emergency stop switch 11. Further, the pull wire II 14 can be made of hemp rope or cotton rope with not too strong strength, which has the advantage that when the vehicle is continuously rolled, i.e. rolled to a large extent, the pull wire II 14 can firstly close the emergency stop switch 11 and then rapidly break to protect the control box 10 or the components therein. Due to the self-locking function of the emergency stop switch 11, even if the pull wire II 14 is broken, the pull wire II can still be closed, so that the power supply 13 can continuously supply power for the wireless signal transmitter 9.

In this embodiment, the pull wire driving assembly comprises a pull wire bracket 15 fixed on the ammonia tank car, an operating handle 16 hinged with the pull wire bracket 15 and a reset element 17; stay wire I4 includes stay wire pipe 41 and sinle silk 42, sinle silk 42 passes the inside one end of stay wire pipe 41 and connects in operating handle 16, the other end connect in manual cut-off valve 3's valve rod 5, reset element 17 connect in sinle silk 42 and operating handle 16 junction or connect in sinle silk 42 with the valve rod 5 junction. The return element 17 can be a cylindrical spring or a spring, etc. When ammonia leakage occurs, a worker can reliably close the manual cut-off valve 3 through the pull wire I4 by operating the operating handle 16. To ensure the safety of the worker, a rope 18 may be installed at the operating handle 16 so that the worker is away from the leakage and operates the operating handle 16 by pulling the rope 18 farther.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (7)

1. The utility model provides an ammonia tank wagon safety protection system that unloads which characterized in that: including installing the manual trip valve that is used for connecting and unloads the ammonia oil filling riser on ammonia tank car drain pipe, the drive assembly that acts as go-between that is used for cutting off manual trip valve I, sets up the drive that acts as go-between that is used for on the ammonia tank car I one end of acting as go-between is connected on the valve rod of manual trip valve, and the other end is connected along keeping away from manual trip valve orientation extension and with the drive assembly that acts as go-between.

2. The ammonia tank car unloading safety protection system of claim 1, wherein: still including setting up the liquid ammonia solenoid valve that is located manual trip valve front end on the drain pipe of ammonia tank car, being connected with the liquid ammonia solenoid valve and being used for controlling the liquid ammonia solenoid valve and opening, the controller of closing, the wireless signal receiving module who is connected with the controller, still including setting up the wireless signal transmitter who uses with the wireless signal receiving module cooperation and being used for triggering wireless signal transmitter and continuously sending wireless signal's control box.

3. The ammonia tank car unloading safety protection system of claim 2, wherein: the control box comprises a shell, an emergency stop switch arranged in the shell and electrically connected with the wireless signal transmitter, a pressing plate which is in single-degree-of-freedom sliding connection with the shell along the axial direction of the emergency stop switch and used for pressing the emergency stop switch, and a power supply used for supplying power to the emergency stop switch and the wireless signal transmitter.

4. The ammonia tank car unloading safety protection system of claim 3, wherein: the two control boxes are fixedly arranged on the ammonia tank car along the horizontal direction in an opposite direction, and a pull wire II is connected to a pressure plate arranged on each control box; one end of the stay wire II is connected to the pressing plate, and the other end of the stay wire II is fixed on the ground.

5. The ammonia tank car unloading safety protection system of claim 4, wherein: the stay wire II is a hemp rope or a cotton rope.

6. The ammonia tank car unloading safety protection system of claim 1, wherein: the pull wire driving assembly comprises a pull wire bracket fixedly arranged on the ammonia tank car, an operating handle hinged with the pull wire bracket and a reset element; stay wire I is including acting as go-between pipe and sinle silk, the sinle silk passes the inside one end of acting as go-between and connects in operating handle, the other end connect in the valve rod of manual trip valve, reset element connect in sinle silk and operating handle junction or connect in the sinle silk with the valve rod junction.

7. The ammonia tank car unloading safety protection system of claim 6, wherein: the operating handle is provided with a rope, and one end of the rope is connected to the other end of the operating handle and connected to the ground.