CN2148219Y

CN2148219Y - Safety interlocking device for fast-open type pressure vessel

Info

Publication number: CN2148219Y
Application number: CN 92238135
Authority: CN
Inventors: 刘岷汀; 王小明
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-23
Filing date: 1992-10-23
Publication date: 1993-12-01
Anticipated expiration: 2002-10-23

Abstract

The utility model discloses a safety interlocking device for a fast-open type pressure vessel. A fast-open door is provided with a locking hole (groove) (18), a locking pin block (4), a locking spring (5), an electromagnet (6), a travel switch (9), a link stopper (10), an electrically operated valve (11), a handle (14), a stopping block (16). The safety measures that if the door is not tightly closed, the pressure of the vessel can not be raised, and if the pressure of the vessel is not reduced to zero, the door can not be opened. The reliability of the locking pin and the locking block can be ensured, and the overpressure protection can be realized.

Description

Safety interlocking device for fast-open type pressure vessel

The utility model belongs to the pressure vessel technology field.

Fast opening type pressure container is the key manufacturing mechanism that is widely used in industries such as chemical industry, weaving, building materials and medical and health.But the quick operating valve of this class container is fastened and the process of opening operation is by manually operated, reliably whether the degree that gland nut compresses, locking device situation such as input have very big randomness, sometimes quick operating valve is not often fastened the container that puts in place and is just put into operation, locking device in service often is in the state of opening, and because of negligence of operation also happens occasionally with the situation that presses off door, so accident is a lot of in the actual motion.

For improving the Security of this class container, task of the present utility model is a kind of safety interlock of design.Make not compress when putting in place when gland nut that locking device can't drop into, have only when gland nut compress put in place after, locking device could drop into; After the locking device input was also working properly, the quick operating valve gland nut just was in locking state, can not become flexible and withdraw from, and at this moment container just can boost; Have only when opening the door after container inner pressure drops to zero, just can open the locking device rotating nut and open the door.

The utility model is achieved in that as shown in Figure 1, goes up or have anti-porosity, groove (18) on the handwheel (2) that is fixedly linked with gland nut (1) or other parts at gland nut (1); With platen (3) that clamping lever (13) is connected on check pin, piece (4) are housed, check pin, piece (4) can insert in anti-porosity, the groove (18), make between nut (1) and the platen (3) and can not relatively rotate, thereby prevented the loosening of nut (1) and withdrawed from that check pin, piece (4) link to each other with electromagnet (6) or link to each other with handle (14); Locking spring (5) is housed on platen (3), is pressed on check pin, the piece (4), help check pin, piece (4) and insert smoothly in anti-porosity, the groove (18), and prevent that it from withdrawing from; Electromagnet (6) is housed on platen (3), and electromagnet (6) gets electronic work when withdrawing from check pin, piece (4); Position limit switch (7) is housed on platen (3), and its sensing probe is arranged in the bottom or the outside of locking hole slot; Do the surface of contact (17) of pushing position limit switch (7) sensing probe on check pin, the piece (4), with control position limit switch (7), make (7) behind check pin, piece (4) insert reliably anti-porosity, groove (18), move, produce the electrical signal of " reliable lock ", with control mortor operated valve (11) action, connect medium inlet pipeline (19), appearance can be boosted; Between platen (3) and door body (8), position limit switch (9) and collision block (10) are housed respectively, when gland nut (1) compress put in place after, collision block (10) is just pushed down the sensing probe of position limit switch (9), make position limit switch (9) action, produce the electrical signal of " door-closing in-place "; Mortor operated valve (11) is installed on the working medium intake line (19) of container, can cut off or connect the working medium of sending into container, and its spool is shapes such as taper or sphere; The pressure transducer (12) that links to each other with container intracavity is housed on container, and pressure transducer can be electric node pressure gauge or other pressure-electric weight conversion element, and action when container superpressure and pressure are zero produces corresponding electric signal.Check pin, piece (4) insert the action of anti-porosity, groove (18), can finish by people or spring (5), when finishing by the people as shown in Figure 3, be connected with door handle device (14) on check pin, the piece (4) and must have done anti-back block face (15), must be connected with anti-back piece (16) on the moving armature of electromagnet (6), spring (20) ejects its armature when electromagnet (6) dead electricity, make anti-back piece (16) block the anti-back block face (15) of check pin, piece (4), thereby prevent that check pin, piece (4) from deviating from from the input state.Check pin, piece (4) withdrawing from from anti-porosity, groove (18) can directly be pulled out by electromagnet (6), or be pulled out by the people.

Electric control schematic diagram as shown in Figure 2, wherein K1 is the normally-closed contact that position limit switch (9) is gone up control electromagnet (6), K2 is the normally opened contact that position limit switch (7) is gone up control mortor operated valve (11), P1 is the contact that pressure transducer (12) is gone up control electromagnet (6), P1 only connects when zero pressure, P2 is the contact of controlling mortor operated valve (11) on the pressure transducer, P2 only opens when the container superpressure, J1 is the auxiliary reclay of control electromagnet (6), and QI, Q2 are respectively the control knob that drops into interlocking and withdraw from interlocking.

The native system working principle is as follows: at closing time, connect the distribution box power supply earlier, make electromagnet (6) adhesive, directly or by the people withdraw from check pin, piece (4), promptly rotatable then handwheel (2) makes gland nut drive platen door is compressed, up to nut compress put in place after, collision block (10) just can be pushed down the sensing probe of position limit switch (9), make position limit switch (9) action, its contact (K1) open circuit, have only at this moment the push switch Q2 can tripping magnet (6) power supply, by people or spring (5) with check pin, piece (4) is pressed in the locking hole slot (18), and locking gland nut (1) is worked as check pin, when piece (4) inserts in the locking hole slot (18) reliably, surface of contact on it (17) is just pushed the sensing probe of position limit switch (7), make its action, connect the control loop of mortor operated valve (11), make mortor operated valve (11) get electronic work, connect the medium intake line (19) of container, at this moment container just can boost work.The contact P2 of pressure transducer disconnects when the container superpressure, cuts off the working medium intake line, and container is protected.Contact P1 connects when container pressure is zero, have only at this moment push switch Q1 just can make electromagnet (6) electric, withdraw from check pin, piece (4) or open the anti-back piece (16) of check pin, piece (4), ready for opening the door.

The utility model has realized that door do not fasten and put in place, and container can not boost, and container pressure does not drop to zero safety measure that can not open the door, and the reliable input of check pin, piece when having guaranteed operation, and has realized overpressure protection.Cut off the control mode of medium intake line owing to adopted electromagnet (6) energising just can withdraw from check pin, piece (4) and mortor operated valve (11) outage, so when accident has a power failure, check pin, piece (4) still reliably drop into, and make system can not continue to boost.Guaranteed that security of system is reliable.

Embodiment of the present utility model:

Safety interlock as shown in Figure 1 and Figure 2 is equipped with locking dish (20) on handwheel (2), have a plurality of locking pin-and-holes of opening along circular arrangement on it, when handwheel turns to the appropriate location, just has a locking pin-and-hole concentric with check pin (4).Check pin (4) is driven by spring (5) and inserts in the locking pin-and-hole, and check pin (4) links to each other with the armature of electromagnet (6), makes and just can directly extract check pin (4) after electromagnet (6) energising.The sensing probe of position limit switch (7) is arranged in the back of locking dish, makes the head surface of contact (17) of check pin (4) could touch the sensing probe of position limit switch (7) when locking dish front is inserted the locking pin-and-hole and pass the back.Pressure transducer adopts electric tubercle point pressure table.

Example 2: on the garden, center that has certain radius on the handwheel (2), have a plurality of locking pin-and-holes (18), upward original pin-and-hole is identical with platen (3) for its quantity, garden, garden, the center heart overlaps with the gyration center of handwheel (2), and garden, center radius is different to the size of its gyration center with the manual check pin on being contained in handwheel (2).Locking pin-and-hole and manual check pin be not on same radius.Like this, check pin (4) can drop into simultaneously with original manual check pin, plays the effect of double insurance, does not influence other functions of manual check pin.

Claims

1, a kind of safety interlock that is used for the quick open type pressurized container is characterized in that: safety interlock is gone up or have anti-porosity, groove (18) on the handwheel (2) that links to each other with gland nut (1) or other parts of linking to each other with nut at gland nut (1); With platen (3) that clamping lever (13) is connected on check pin, piece (4) are housed; On check pin, piece (4), be pressed with locking spring (5); Electromagnet (6), position limit switch (7) are housed on platen (3); Between platen (3) and door body (8), position limit switch (9) and collision block (10) are housed respectively; Mortor operated valve (11) is housed on the working medium intake line of container; Pressure transducer (12) is housed on container; On locking pin block (4), be connected with handle (14); On locking pin block (4), done locking block face (15); On the moving armature of electromagnet (6), be connected with anti-back piece (16);

2, safety interlock as claimed in claim 1 is characterized in that: check pin, piece 4) on have the surface of contact (17) of pushing position limit switch (7) sensing probe.

3, safety interlock as claimed in claim 1 is characterized in that: the sensing probe of position limit switch (7) is installed in the bottom of anti-porosity, groove (18).

4, safety interlock as claimed in claim 1 is characterized in that: pressure transducer (12) is electric node pressure gauge.

5, safety interlock as claimed in claim 1 is characterized in that: the contact P1 that only connects when pressure is zero that control electromagnet (6) is arranged on the pressure transducer (12); The contact P2 that only when superpressure, disconnects that control mortor operated valve (11) is arranged.

6, safety interlock as claimed in claim 1 is characterized in that: have the normally opened contact (K2) of control mortor operated valve (11) on the position limit switch (7), have the normally-closed contact (K1) of control electromagnet (6) on the position limit switch (9).

7, safety interlock as claimed in claim 1 is characterized in that: the spool of mortor operated valve (11) is taper or sphere.

8, safety interlock as claimed in claim 1, it is characterized in that: have a plurality of locking pin-and-holes (18) on the handwheel (2), upward original pin-and-hole quantity is identical with platen (3) for its quantity, garden, garden, the center heart overlaps with handwheel (2) gyration center, and garden, center radius is different to the size of its gyration center with the manual check pin on being contained in handwheel (2).Locking pin-and-hole (18) and manual check pin be not on same radius.