CN202937801U

CN202937801U - Mechanical quick-opening type pressure vessel safety interlock device

Info

Publication number: CN202937801U
Application number: CN 201220619341
Authority: CN
Inventors: 庄宇; 韩方龙
Original assignee: Shenyang Aerospace Xinguang Group Co Ltd
Current assignee: Shenyang Aerospace Xinguang Pressure Vessel Co ltd
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2013-05-15
Anticipated expiration: 2022-11-21

Abstract

The utility model relates to a mechanical quick-opening type pressure vessel safety interlock which can be used in environments in which the fire striking operation is not allowed. The device comprises a locking mechanism and a control mechanism, wherein the locking mechanism is arranged on a hand-rocking speed reducer, and the control mechanism is arranged on a kettle body; the locking mechanism is characterized in that one end of a sleeve is arranged in an inner cavity of an adapter tube and is connected with a lifting disc; the other end of the sleeve extents out of the adapter tube and is connected with a locking plate; a stop pin is arranged in the sleeve; and the control mechanism is characterized in that a ball valve and a limit stop block are arranged on the kettle body; a safety handle, a baffle plate and the ball valve are coaxially arranged; the safety handle and the ball valve are respectively arranged at both ends of a shaft; and the baffle plate is arranged at the end close to the safety handle. By adopting the mechanical quick-opening type pressure vessel safety interlock, the control precision is improved, and the micropressure control is achieved, so that the safety is ensured; by adopting the simple pure mechanical structure, the economical efficiency is improved; and generally, the safety, the economical efficiency and the micropressure control are guaranteed.

Description

The mechanical-type safety interlock device of fast opening type pressure container

Technical field

The utility model relates to a kind of safety interlock, relates in particular to a kind of mechanical-type safety interlock device of fast opening type pressure container that can be used for not allowing producing under the sparking operating environment.

Background technique

It is reported, the present safety interlock of China has microcomputer control, instrument and meter for automation to control and pure machinery is controlled three kinds, the above two are easier to realize every chain function, but they realize interlocking action by means of the external energy, all there are poor reliability, high in cost of production shortcoming, though and pure machinery control does not have above-mentioned shortcoming, the more difficult chain function of realizing fully, particularly minute-pressure can not get controlling.In the relatively poor situation of working environment, the use of safety interlock is very restricted in addition.For this reason, the advantage of comprehensive above several safety interlocks can comprehensively be improved it, for example existing electromechanical minute-pressure interlock, namely be controlled to be the master with machinery, and electrical equipment control is auxiliary, it has Auto-control of Micro-pressure precision and highly sensitive characteristics, but its structure is comparatively complicated, and cost is higher.

Summary of the invention

The utility model is for above-mentioned problems of the prior art, a kind of mechanical-type safety interlock device of fast opening type pressure container that can use under the operating environment that do not allow to strike sparks is provided, solve safety interlock complex structure in the prior art, problem that cost is high, and improved control accuracy.

To achieve these goals, the technical solution of the utility model is as follows:

Comprise locking mechanism and control mechanism, locking mechanism is arranged on hand retarder, and control mechanism is arranged on movable kettle cover; Described locking mechanism is that an end of sleeve is arranged on to be taken in inner chamber, and is connected with the lifting dish; The other end of sleeve stretches out adapter, and is connected with jam plate; Stop pin is arranged in sleeve; Described control mechanism is, ball valve and positive stop are arranged on movable kettle cover, the coaxial setting of dead-man's handle, baffle plate and ball valve, and dead-man's handle and ball valve are separately positioned on the two ends of axle, and baffle plate is arranged on an end that closes on dead-man's handle.

Be provided with sealing gasket between described sleeve and lifting dish.

Fix by flange between described sleeve and adapter.

The beneficial effects of the utility model are: the utility model is as the pressure vessel safety interlock of pure mechanical direct acting type, with prior art product ratio of the same type, improve the control accuracy of safety interlock, made Security, Auto-control of Micro-pressure be guaranteed; Under the prerequisite that satisfies main body fast opening type pressure container structure ﹠processes performance, adopted mechanical device to control the switch of kettle cover, make the synchronous locking device of still internal air pressure system made quick operating valve, reached process and security and unity; Can use under the operating environment that does not allow to strike sparks; Directly by self minute-pressure in container, by dead-man's handle, hand retarder is realized the safety interlocking function, and it has Auto-control of Micro-pressure precision, highly sensitive characteristics.

Description of drawings

Fig. 1 is the structural representation under the utility model use state.

Fig. 2 is the partial structurtes schematic diagram of the utility model locking mechanism.

Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2.

Fig. 4 is the partial structurtes schematic diagram of the utility model control mechanism.

Fig. 5 is structural representation of the present utility model.

In figure, 1, locking mechanism, 2, movable kettle cover, 3, bearing, 4, kettle working platform and conveying track, 5, kettle, 6, control mechanism, 7, safety valve, 8, end socket; 101, jam plate, 102, sleeve, 103, stop pin, 104, flange I, 105, flange II, 106, sealing gasket, 107, the lifting dish, 108, take over; 601, dead-man's handle, 602, baffle plate, 603, positive stop, 604, ball valve; Dead-man's handle position when 605, ball valve is closed, 606, dead-man's handle position when ball valve is opened.

Embodiment

Referring to accompanying drawing, in conjunction with specific embodiments, the utility model is described in detail as follows.

Embodiment

Comprise locking mechanism 1 and control mechanism 6, locking mechanism 1 is arranged on hand retarder, and control mechanism 6 is arranged on movable kettle cover 2; Described locking mechanism 1 is that an end of sleeve 102 is arranged on to be taken in 108 inner chambers, and is connected with lifting dish 107, is provided with sealing gasket 106 between sleeve 102 and lifting dish 107; The other end of sleeve 102 stretches out takes over 108, and is connected with jam plate 101, fixing by flange I 104 and flange II 105 between sleeve 102 and adapter 108; Stop pin 103 is arranged in sleeve 102; Described control mechanism 6 is, ball valve 604 and positive stop 603 are arranged on movable kettle cover 2, dead-man's handle 601, baffle plate 602 and the coaxial setting of ball valve 604, dead-man's handle 601 and ball valve 604 are separately positioned on the two ends of axle, and baffle plate 602 is arranged on an end that closes on dead-man's handle 601.

Principle of the present utility model and working procedure are as follows:

One, principle:

1) the air inlet process computation that boosts:

The air inlet bore of this equipment is DN20. and the ball valve bore that is connected with safety installations is DN50. works as quick operating valve and do not close when putting in place, and ball valve can't be closed, and is in all the time the position of opening, so can't boost in still.

2) air inlet sealing and pressure leak process calculate:

M1-----stop pin quality, m2----sealing gasket quality, m3----lifting dish quality,

M4----nut quality, m----safety interlock gross mass (m=m1+m2+m3+m4),

G----gravity accleration, D----lifting dish diameter, d----stop pin diameter

Initial sealing calculation of pressure P1=4mg/ π d2, namely when the still internal pressure reached 0.0054Mpa, stop pin and jam plate were locked, realized simultaneously sealing.

During exhaust, stop pin falls calculation of pressure P2=4mg/ π D2 after rise, and namely when the still internal pressure was down to 0.00071Mpa, stop pin was just thrown off with jam plate, and the opening door operation of this moment is safe.

Two, working procedure:

1) close the door the stage

Move dead-man's handle, make it be in 270 ° of positions, the rotation kettle cover is closed to the position, moves dead-man's handle, make it be in 180 ° of positions, this moment, ball valve was closed, and in still, ventilation is boosted, along with pressure raises, when reaching 0.0059Mpa, the lifting dish lifts stop pin automatically, makes stop pin and jam plate locked, has realized simultaneously the sealing between lifting dish and sleeve;

2) normal work stage

Pressure under normal operating state is enough to make and promotes the moving stop pin of dribbling and be in the position locked with jam plate, and far away higher than the initial sealing pressure of lifting dish, so kettle cover auto lock can not rotate due to operation pressure, and automatic-sealed satisfies the normal running requirement;

3) open the door the stage

After the interior pressure release of still, move dead-man's handle to 270 ° position, ball valve is in the enable possition, further gets rid of residual air, when the residual air Pressure Drop during to 0.00071Mpa, promoting the moving stop pin of dribbling begins to fall, can rotate kettle cover this moment, if when having the overbottom pressure of less amount, and can be from sideshake moment eliminating in the process of opening the door, reasoning to kettle cover is very little, reaches safe purpose.

Claims

1. the mechanical-type safety interlock device of fast opening type pressure container, comprise locking mechanism and control mechanism, and locking mechanism is arranged on hand retarder, and control mechanism is arranged on movable kettle cover; It is characterized in that described locking mechanism is, an end of sleeve is arranged on to be taken in inner chamber, and is connected with the lifting dish; The other end of sleeve stretches out adapter, and is connected with jam plate; Stop pin is arranged in sleeve; Described control mechanism is, ball valve and positive stop are arranged on movable kettle cover, the coaxial setting of dead-man's handle, baffle plate and ball valve, and dead-man's handle and ball valve are separately positioned on the two ends of axle, and baffle plate is arranged on an end that closes on dead-man's handle.

2. mechanical-type safety interlock device of fast opening type pressure container according to claim 1, is characterized in that being provided with sealing gasket between described sleeve and lifting dish.

3. mechanical-type safety interlock device of fast opening type pressure container according to claim 1, is characterized in that fixing by flange between described sleeve and adapter.