CN2208640Y - Gas-electricity linkage safety interlock device - Google Patents

Abstract

The utility model relates to a gas-electricity linkage safety interlock device for a quick-open door-typed pressure vessel, comprising a mechanical interlock device driven by an electric controller. The mechanical interlock device is composed of a ratchet sheathed on the rotary shaft of a hand-operated speed reducer or the rotary handle of a quick-open door, a ratchet pawl using one supporting point to fix on a supporting plate, and two tractive magnets respectively connected to both ends of the ratchet pawl. The ratchet is provided with teeth, and the ratchet pawl is also provided with teeth; a positioning device is fixed under the ratchet pawl; the tractive magnets are connected with an electric controller. The utility model has the function that the self-locking is carried out under the condition that the interior of the pressure vessel has pressure; the operation is safe and sensitive.

Description

Gas-electricity linkage safety interlock device

The utility model is a kind of safety interlock that is used on the fast opening type pressure container.

Fast opening type pressure container is the key manufacturing mechanism that is widely used in industries such as chemical industry, light industry, weaving, medicine, reasons such as in use malfunctioning, workman's misoperation owing to mechanical failure, Displaying Meter, tend under inside also has the situation of pressure, open, cause accidents such as being subjected to piezodielectric is gone out, scald.For this reason, people utilize the way of locking door open knob to prevent dangerous the generation.As CN204402 pressure vessel safety self-locking device, it is a principle of utilizing cylinder piston, has in pressurized container under the situation of pressure, and piston rod is ejected, and inserts in the hole on the handle, and handle is lockable.This plant automation degree is not high, and Applicable scope is wideless, and sensitive inadequately sometimes.

The purpose of the utility model is: providing a kind of has in pressurized container under the pressure state, realizes the air-electricity linkage safety interlock of quick operating valve locking automatically.

The purpose of the utility model can be achieved through the following technical solutions, promptly at socket one ratchet on the pressure vessel of quick opening door rotatable handle or on the hand retarder rotatingshaft, tooth is arranged on the ratchet, ratchet is fixed on the support plate with its fulcrum, affect the two ends of ratchet respectively by two tractive magnets, make tooth and the ratchet engaged on the ratchet or do not mesh, handle or rotatingshaft can not rotate to the direction of opening the door when engagement, and promptly quick operating valve is locking state.For making under the locking state ratchet not occur rotating, fix a location device under the ratchet, the tractive magnet electric controller of ining succession.

Positioning device under the ratchet can directly be fixed on the support plate, is made up of sliding pin and cover spring thereon, and when ratchet was not subjected to the tractive magnet traction, sliding pin withstood on the lower end of ratchet, prevents that ratchet from rotating.

Isolating transformer is arranged in the electric controller in the technical program, reach current supply circuit, control loop by its separation, comprised the latch circuit and open the door and separate the locking circuit of boosting in the control loop, the latch circuit that boosts is formed by connecting by zero-pressure controller P, tractive magnet 1JCT, time relay 1JS; Open the door separate the locking circuit be formed by connecting by zero-pressure controller P, time relay 2JS, door opening key or button 1SA, tractive magnet 2JCT.

In electric controller, be connected with tutorial light, make its effective display power supply conducting situation, whether pressure is arranged, opening door operation indication etc. in the container.

The utility model working principle is: when pressure vessel of quick opening door boosts to 0.002MPa; the automatic conducting of zero-pressure controller P; there is the warning lamp of pressure bright; simultaneously; tractive magnet 1JCT action; tractive magnet 1JCT drives ratchet and rotates, and makes the tooth of ratchet and the tooth engagement of ratchet be lock state, and the rotatingshaft of handle or hand retarder must not be rotated to the direction of opening the door; time relay 1JS is through certain hour; as 5 seconds, relay 1JS disconnected, and the latch circuit that boosts is disconnected; this moment, the utility model kept lock state; sliding pin by the spring force effect withstand on ratchet below, ratchet must not be rotated, promptly be a kind of pair of protective measure.When steam-cured end, when pressurized container is depressurized to 0.002MPa, zero-pressure controller P is conducting automatically once more, and door open button is pressed in time delay relay 2JS conducting, the tutorial light that opens the door is bright, tractive magnet 2JCT action drives ratchet and rotates, and ratchet and ratchet are thrown off, then can rotatable handle or hand retarder rotatingshaft, open quick operating valve.Cause the electric shock phenomenon because of having adopted isolating transformer in the utility model electric controller, made the control loop that automatically locks can not constitute because of current loop.

Superiority of the present utility model is: automatic interlock, handling safety, sensitivity are arranged in pressurized container under the pressure condition.See embodiment and accompanying drawing for details.

Accompanying drawing 1 embodiment 1 lock state structural drawing.

Accompanying drawing 2 example structure figure.

Electrical principle Fig. 1 of accompanying drawing 3 embodiments 1.

Embodiment 1: as Fig. 1, Fig. 2, ratchet (1) is socketed on the rotatingshaft (2) of hand speed reducer, ratchet (3) is fixed on the support plate (4) by screw rod (5), one end of ratchet (3) is by connecting rod (6,7) be connected on the tractive magnet 1JCT, the other end is by connecting rod (8,9) be connected on the tractive magnet 2JCT, tractive magnet is fixed on the support plate (10), between support plate (4) and the support plate (10) support plate (11) is arranged, support plate (11) links to each other with reducer shell (12), regulate support plate (4), (10), (11) between, following relative position, hand retarder applicable to various sizes, housing of the present utility model (13) is fixed on the reducer shell (12), as the lock state of Fig. 1, the positioning device that sliding pin (14) and spring (15) are formed withstands on the semicircle groove place under the ratchet (3).As Fig. 2 positioning device is to be fixed on the support plate (4) by a support (16).By this positioning device, under the tractive magnet off-position, still keep the locked position of ratchet (3).Tractive magnet is controlled by electric controller.

Electric controller is an electric control cubicle in the present embodiment, its electrical principle such as Fig. 3.Connect the electric control cubicle power supply in the drawings, power supply indicator 1 * D is bright, when boosting to 0.002MPa, be installed in the zero-pressure controller P action on the container, auxiliary reclay 1J, 2J conducting, tractive magnet 1JCT action, ratchet (1) meshes into lock state with ratchet, and through the several seconds, time relay 1JS disconnects, tractive magnet 1JCT outage, and the attitude of remaining stationary.At this moment time relay 2JS conducting, 3 * D is bright for the locking tutorial light.This moment, the handle of hand retarder can not rotate to the direction of opening the door, and made quick operating valve can't open because of misoperation.Controller P moves once more when reducing to 0.002MPa in the pressurized container, there is the tutorial light of pressure to go out, there is not the bright time-delay of the tutorial light 5 * D of pressure several seconds relay 2JS closure, press door open button 1SA, tutorial light 4 * the D that opens the door is bright, tractive magnet 2JCT action, ratchet (1) is thrown off with ratchet (3), and quick operating valve can be opened.

Application examples 1, the utility model embodiment is used for quick operating valve and puts in place, on the pressurized container that can boost, promptly on pressurized container, a limiting stopper is arranged, the semi-disc handle is connected with the ball valve of pressurized container, forward the position of ball valve closure to when the semi-disc handle, limiting stopper is blocked, and quick operating valve is shut, and can boost in the pressurized container.At this moment the zero-pressure controller P that is contained on the container moves when boosting to 0.002MPa, auxiliary reclay 1J, 2J conducting, tractive magnet 2JCT action, ratchet (1) meshes into locking state with ratchet (2), there is the tutorial light of pressure 2 * D bright simultaneously, through the several seconds, as 5 seconds, time relay 1JS disconnected, tractive magnet 1JCT outage, and ratchet (1), ratchet (2) keep former operating state, time relay 2JS conducting at this moment, and 3 * D is bright for the locking tutorial light.This moment, the handle of hand retarder can not rotate to the direction of opening the door, and made quick operating valve can't open because of misoperation.Step-down in pressurized container, when pressure is reduced to 0.002MPa, zero-pressure controller P moves once more, has the tutorial light of pressure to go out, and it is bright not have the tutorial light of pressure 5 * D, time-delay several seconds relay 2JS closure, press door open button 1SA, the tutorial light 4 * D that opens the door is bright, tractive magnet 2JCT action, ratchet (1) is thrown off with ratchet (3), and quick operating valve can be opened.Fast opening type pressure container that should use-case has had quick operating valve and locking device thereof and has reached to give and decide the interlocked control function that the working position can booste operation; Internal pressure at pressurized container discharges fully, and locking device is thrown off, the interlocking interlock effect that can open quick operating valve; And alarm function is arranged.

Claims (4)

1, a kind of air-electricity linkage safety interlock, comprise the mechanical interlock that drives by electric controller, be characterised in that: mechanical interlock by be enclosed within ratchet on hand retarder rotatingshaft or the quick operating valve handle, with a fulcrum be fixed in ratchet on the support plate, two tractive magnets being connected to the ratchet two ends form, tooth is arranged on the ratchet, tooth is also arranged on the ratchet, be fixed with a location device under the ratchet, the tractive magnet electric controller of ining succession.

2, by the described air-electricity linkage safety interlock of claim 1, be characterised in that: positioning device is made up of sliding pin and cover spring thereon.

3, by the described air-electricity linkage safety interlock of claim 1, it is characterized in that: isolating transformer is arranged and in the electric controller by current supply circuit, the control loop of its separation, comprised the latch circuit and open the door and separate the locking circuit of boosting in the control loop, the latch circuit that boosts is formed by connecting by zero-pressure controller P tractive magnet 1JCT, time relay 1JS, open the door separate the locking circuit be formed by connecting by zero-pressure controller P, time relay 2JS, door opening key or button 1SA, tractive magnet 2JCT.

4, by the described air-electricity linkage safety interlock of claim 3, be characterised in that: be connected with tutorial light in the electric controller.

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