CN214948230U - Control device for root emergency cut-off valve of liquid ammonia tank truck - Google Patents

Abstract

The utility model discloses a liquid ammonia tank car root emergency cut-off valve control device, which comprises a remote switch (1), an instrument air source (2), an air source control solenoid valve (3), a thrust cylinder (5) arranged on a big frame channel steel (11) at the tail part of the tank car and a manual control handle (10) of the emergency cut-off valve of the tank car; the remote switch (1) is electrically connected with the air source control electromagnetic valve (3), the instrument air source (2) is communicated with the thrust cylinder (5) through an air path, and the air source control electromagnetic valve (3) is arranged on the air path; thrust cylinder (5) with tank wagon emergency cut-off valve manual control handle (10) contact is connected, has solved when unexpected the leaking takes place among the liquid ammonia loading process, needs operating personnel to arrive on-the-spot manual problem of closing tank wagon emergency cut-off valve.

Description

Control device for root emergency cut-off valve of liquid ammonia tank truck

Technical Field

The utility model relates to a liquid ammonia transportation technical field, more specifically relates to a liquid ammonia tank wagon root promptly cuts off valve controlling means.

Background

Liquid ammonia is a liquefied dangerous medium, and its characteristics are easily fired, explosive and easily poisoned, have strong irritability, if take place to leak, the on-the-spot degree of difficulty of handling is great, and liquid ammonia is filling the car loading of many adoption in the transportation at present, in filling the tank wagon through the universal joint oil filling riser with the automatic liquid ammonia of pressure into, for preventing that liquid ammonia fills the liquid ammonia and fills the liquid ammonia leakage outside appearing because of the universal joint, filling interface in-process, the universal joint front end is provided with the remote control trip valve, and liquid ammonia tank wagon afterbody is provided with manual emergency trip valve handle. However, if the leakage amount of the filling universal joint is large, an operator cannot reach the tail of the tank car due to liquid ammonia irritation and needs to wear a special protective article to reach the tank car, so that the field treatment time is delayed, the leakage amount is increased along with the extension of the treatment time on the field, and safety risk elements such as ignition, explosion or personal injury exist.

The prior art has the following defects: if the in-process of liquid ammonia loading leaks outside taking place, the staff need dress professional protective articles earlier, goes to the tank wagon root again and closes the emergency cut-off valve, continuously takes place liquid ammonia and leaks at the in-process of closing the cut-off valve, has the possibility of further enlarging risk factor, and the staff needs field operation closely, is unfavorable for protecting staff's personal safety.

SUMMERY OF THE UTILITY MODEL

To the above defect or the improvement demand of prior art, the utility model provides a liquid ammonia tank wagon root emergency cut-off valve controlling means, this device adopts the thrust cylinder to be fixed in on the tank wagon afterbody adds the channel-section steel greatly, and promote tank wagon emergency cut-off valve manual control handle through the piston pull rod, reach the purpose of cutting off the tank wagon and carrying the liquid ammonia passageway, adopt pressure-bearing hose intercommunication thrust cylinder and instrument air supply simultaneously, but long-range pneumatic control thrust cylinder closes tank wagon emergency cut-off valve manual control handle, when having solved when the liquid ammonia loading in-process and having taken place unexpected the leakage, need operating personnel to arrive the problem of on-the-spot manual shut-off valve of tank wagon emergency.

In order to achieve the above object, the present invention provides a liquid ammonia tank wagon root emergency shutoff valve control device, which comprises:

the remote switch, the instrument gas source, the gas source control solenoid valve, the thrust cylinder arranged on the large frame channel steel at the tail part of the tank car and the manual control handle of the emergency cut-off valve of the tank car are arranged on the tank car;

the remote switch is electrically connected with the air source control electromagnetic valve, the instrument air source is communicated with the thrust cylinder through an air path, and the air source control electromagnetic valve is arranged on the air path;

the thrust cylinder is in contact connection with a manual control handle of the tank car emergency cut-off valve.

Furthermore, the thrust cylinder includes piston pull rod and piston lantern ring, the piston pull rod can be followed the thrust cylinder inner wall slides, the piston lantern ring is located piston pull rod one end, and the suit in tank wagon emergency cut-off valve manual control handle.

Further, the gas circuit comprises a pressure-bearing hose, one end of the pressure-bearing hose is communicated with the thrust cylinder, and the other end of the pressure-bearing hose is communicated with the instrument gas source.

The thrust cylinder is fixedly connected with the fixed frame.

Further, the fixing frame comprises two or more fixing bolts, and the fixing bolts are used for fixing the fixing frame to the tank car tail large frame channel steel.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

1. the utility model provides a liquid ammonia tank wagon root emergency cut-off valve controlling means adopts thrust cylinder to be fixed in tank wagon afterbody adds the channel-section steel greatly to promote tank wagon emergency cut-off valve manual control handle through the piston pull rod, reach the purpose of cutting off tank wagon transport liquid ammonia passageway, adopts pressure-bearing hose intercommunication thrust cylinder and instrument air supply simultaneously, but remote pneumatic control thrust cylinder closes tank wagon economic cut-off valve manual control handle, when having solved when the liquid ammonia loading process and having happened accidental leakage, need the operating personnel to arrive the problem that the scene manually closed the cut-off valve;

2. the utility model provides a liquid ammonia tank wagon root emergency cut-off valve controlling means, adopt and be equipped with the air supply control solenoid valve between instrument air supply and pressure-bearing hose, and the air supply control solenoid valve can be controlled to open or close through remote switch, and operating personnel can open the air supply control solenoid valve in the department of keeping away from the tank wagon, make the interior gas of instrument air supply promote the piston pull rod and close tank wagon emergency cut-off valve manual control handle, reach the purpose of carrying on emergency shut-off operation rapidly and remotely;

3. the utility model provides a liquid ammonia tank wagon root emergency cut-off valve controlling means is equipped with the piston sleeve ring at the piston pull rod end, twines sticky tape or suit rubber circle simultaneously on the piston sleeve ring to the piston sleeve ring produces the friction with it when avoiding the piston pull rod to promote tank wagon emergency cut-off valve manual control handle, has reduced the risk that takes place friction initiation spark or static and ignite the leakage ammonia, and thrust unit adopts the pneumatic thrust cylinder simultaneously, has avoided electric actuator to produce the risk of spark.

Drawings

Fig. 1 is a schematic structural diagram of a control device for an emergency shut-off valve at the root of a liquid ammonia tank truck according to an embodiment of the present invention.

In all the figures, the same reference numerals denote the same features, in particular: 1-remote switch, 2-instrument air source, 3-air source control solenoid valve, 4-pressure-bearing hose, 5-thrust cylinder, 6-piston pull rod, 7-fixing bolt, 8-fixing frame, 9-piston lantern ring, 10-manual control handle of emergency cut-off valve of tank car, and 11-tank car tail large frame channel steel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the utility model provides a liquid ammonia tank wagon root emergency cut-off valve controlling means, it is including installing in the thrust cylinder 5 of the big frame channel-section steel 11 of tank wagon afterbody, be equipped with piston pull rod 6 in the thrust cylinder 5, piston pull rod 6 can be followed slip around the thrust cylinder 5, simultaneously piston pull rod 6 can promote tank wagon emergency cut-off valve manual control handle 10 to reach the mesh of closing the tank wagon emergency cut-off valve, furtherly, instrument air supply 2 through pressure-bearing hose 4 with thrust cylinder 5 switch-on, let in from instrument air supply 2 when compressed gas, communicate to thrust cylinder 5 in by pressure-bearing hose 4 again, can promote piston pull rod 6 and slide, reach the mesh of long-range closed tank wagon emergency cut-off valve.

Further, as shown in fig. 1, a remote switch 1 is disposed at a position far from the tank car, the remote switch 1 is electrically connected to the gas source control solenoid valve 3, and can transmit a power signal to control the gas source control solenoid valve 3 to open or close, an operator can control the opening or closing of the gas source control solenoid valve 3 through the remote switch 1, the gas source control solenoid valve 3 is disposed on the instrument gas source 2 and is used for controlling the on/off of gas in the instrument gas source 2 to the pressure-bearing hose 4, preferably, the instrument gas source 2 is a 0.6MPa gas source, if the gas pressure used by the instrument gas source 2 cannot be guaranteed to be 0.6MPa, the gas pressure is at least greater than 0.3MPa, further, the pressure-bearing hose 4 should be made of a material with good toughness and strong pressure-bearing force, the pressure-bearing hose 4 can extend the distance between the instrument gas source 2 and the tank car, and the remote switch 1 can be disposed in an operating room far from the tank car, particularly, the remote switch 1 and the gas source control electromagnetic valve 3 are all explosion-proof elements so as to prevent the device from generating static electricity or sparks to detonate leaked liquid ammonia in the operation and use process, when accidental leakage is found in the liquid ammonia loading process, the gas source control electromagnetic valve 3 can be controlled at a far end through the remote switch 1 at the first time, so that gas in the instrument gas source 2 enters the thrust cylinder 5 through the pressure-bearing hose 4, the purpose of remote control is achieved, danger elimination time is saved, and safety accidents caused by too-close operation of personnel are prevented.

Further, the thrust cylinder 5 is installed on a large-frame channel steel 11 at the tail of the tank car through a fixing frame 8, two or more fixing bolts are arranged at the bottom of the fixing frame 8 to prevent the fixing frame 8 from falling off, preferably, the diameter of the thrust cylinder 5 adopts a 50cm specification to ensure sufficient thrust and prevent control failure, the piston pull rod 6 is connected in the thrust cylinder 5 in a sliding manner, the sliding direction of the piston pull rod is the same as the closing direction of the manual control handle 10 of the emergency cut-off valve of the tank car, further, one end of the piston pull rod 6 extends out of the thrust cylinder 5 and is fixedly connected with a piston sleeve ring 9 at the end part, the piston sleeve ring 9 is sleeved on the manual control handle 10 of the emergency cut-off valve of the tank car, the manual control handle 10 of the emergency cut-off valve of the tank car can be pushed to be closed when the piston pull rod 6 pushes outwards, and the purpose of finally cutting off the liquid ammonia to fill the channel of the tank car in an emergency manner is achieved, particularly, when the thrust cylinder 5 is installed, whether the length and the force of the piston pull rod 6 are enough to push the manual control handle 10 of the emergency cut-off valve of the tank car to a completely closed state or not is verified in advance, so that the failure of the device in an emergency situation is prevented, and further, the piston sleeve ring 9 can be wrapped with adhesive tape or rubber sleeves, so that the purpose of preventing the direct friction between the metal piston sleeve ring 9 and the manual control handle 10 of the emergency cut-off valve of the tank car is achieved.

The working principle of the device is as follows: will thrust cylinder 5 is fixed in on the tank car afterbody truss channel-section steel 11, verify simultaneously piston pull rod 6's length and thrust are enough to promote tank car emergency cut-off valve manual control handle 10 is to the state of closing completely, instrument air supply 2 switches on to thrust cylinder 5 through pressure-bearing hose 4 for promote piston pull rod 6 slides, air supply control solenoid valve 3 is located between instrument air supply and the pressure-bearing hose 4, through the break-make of 1 remote control gas circuit of remote switch to realize the long-range quick cut-off of operating personnel the function of tank car liquid ammonia passageway has saved operating time, has guaranteed operating personnel's personal safety.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims (5)

1. The utility model provides a liquid ammonia tank wagon root emergency cut-off valve controlling means which characterized in that includes:

the remote control device comprises a remote switch (1), an instrument gas source (2), a gas source control electromagnetic valve (3), a thrust cylinder (5) arranged on a large frame channel steel (11) at the tail part of the tank car and a manual control handle (10) of an emergency cut-off valve of the tank car;

the remote switch (1) is electrically connected with the air source control electromagnetic valve (3), the instrument air source (2) is communicated with the thrust cylinder (5) through an air path, and the air source control electromagnetic valve (3) is arranged on the air path;

the thrust cylinder (5) is in contact connection with a manual control handle (10) of the tank car emergency cut-off valve.

2. The liquid ammonia tank wagon root emergency shut-off valve control device according to claim 1, wherein the thrust cylinder (5) comprises a piston pull rod (6) and a piston collar (9), the piston pull rod (6) can slide along the inner wall of the thrust cylinder (5), and the piston collar (9) is arranged at one end of the piston pull rod (6) and sleeved on the manual control handle (10) of the tank wagon emergency shut-off valve.

3. The control device for the root emergency shut-off valve of the liquid ammonia tank car according to claim 1 or 2, wherein the gas path comprises a pressure-bearing hose (4), one end of the pressure-bearing hose (4) is communicated with the thrust cylinder (5), and the other end is communicated with the instrument gas source (2).

4. The liquid ammonia tank wagon root emergency shut-off valve control device according to claim 1, characterized by comprising a fixing frame (8), wherein the fixing frame (8) is arranged on a tank wagon tail large frame channel steel (11), and the thrust cylinder (5) is fixedly connected with the fixing frame (8).

5. The liquid ammonia tank truck root emergency shut-off valve control device according to claim 4, characterized in that the fixing frame (8) comprises a fixing bolt (7), and the fixing bolt (7) is provided with two or more than two bolts for fixing the fixing frame (8) to the tank truck tail large frame channel (11).

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