CN110296268B

CN110296268B - Emergency flapper valve

Info

Publication number: CN110296268B
Application number: CN201910575483.0A
Authority: CN
Inventors: 杨珍; 张军军; 李志印; 彭文波
Original assignee: China Ship Development and Design Centre
Current assignee: China Ship Development and Design Centre
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2021-09-21
Anticipated expiration: 2039-06-28
Also published as: CN110296268A

Abstract

The invention discloses an emergency flapper valve, which comprises a valve body, a support, a valve disc assembly and a valve seat, wherein the valve body is arranged on the support, the valve disc assembly is matched with the valve seat, and the emergency flapper valve is characterized in that: still include the transmission subassembly, the transmission subassembly includes application of force mechanism, pendulum changes mechanism, rocking arm, application of force mechanism and valve body seal configuration and pass and provide drive power for pendulum changes mechanism behind the valve body, the tail end and the articulated setting of rocking arm of pendulum changes the mechanism, the one end and the valve disk subassembly fixed connection of rocking arm, the other end is articulated with the disk seat. This emergent tongue valve convenient operation can keep zero leakage at certain depth range under water, and transmission can adapt to the deformation of hull structure, and the sealing material is stand wear and tear, ageing resistance is good, and pin joint part relative motion is nimble, not fall off.

Description

Emergency flapper valve

Technical Field

The invention relates to the technical field of valves, in particular to an emergency tongue valve of a submarine ballast water tank.

Background

The emergency flapper valve is used in a ballast water tank without a sea valve, and is used as a second lock of a main ballast water tank vent valve, and a ballast water tank vent port is closed emergently in the case of damage of the vent valve.

The existing emergency flapper valve of the ballast water tank and the transmission device thereof have the following problems in actual use: in addition, the emergency flapper valve is large in opening and closing power demand due to the fact that the transmission device is unreasonable in structural design, and a valve disc cannot be tightly pressed and closed. Therefore, the problem that the valve cannot be tightly closed due to the fact that the hinge joint cannot fall off in the working process is urgently needed to be solved.

Disclosure of Invention

The invention aims to solve the technical problem of providing an emergency flapper valve which is simple to operate and reliable to use aiming at the defects of the prior art.

The technical scheme adopted by the invention is as follows: an emergent flapper valve, includes support, valve disc assembly, disk seat, valve disc assembly, the valve body is installed on the support, valve disc assembly sets up with the valve seat, its characterized in that: still include the transmission subassembly, the transmission subassembly includes application of force mechanism, pendulum changes mechanism, rocking arm, application of force mechanism and valve body seal configuration and pass and provide drive power for pendulum changes mechanism behind the valve body, the tail end and the articulated setting of rocking arm of pendulum changes the mechanism, the one end and the valve disk subassembly fixed connection of rocking arm, the other end is articulated with the disk seat.

According to the technical scheme, the swing mechanism comprises a rotating arm and a transmission rod, one end of the rotating arm is hinged with the force application mechanism, the other end of the rotating arm is hinged with the transmission rod, the transmission rod is hinged with the rotating arm, the rotating arm is bent, and the turning part of the rotating arm is hinged on the support to form a lever structure.

According to the technical scheme, the force application mechanism is a screw thread pair force application mechanism.

According to the technical scheme, the force application mechanism comprises a threaded sleeve which is hermetically arranged in the inner hole of the valve body and can axially slide along the inner hole of the valve body, and a transmission shaft in threaded connection with the threaded sleeve, wherein the transmission shaft is arranged at the end part of the valve body through a bearing and is driven to rotate through driving the transmission shaft to realize the axial sliding of the threaded sleeve, and the threaded sleeve is hinged with the rotating arm of the swing mechanism.

According to the technical scheme, the tail end of the threaded sleeve is connected with the hinged point of the rotating arm through the limiting sliding mechanism, the limiting sliding mechanism comprises a limiting sliding groove and a pin shaft, the limiting sliding groove is arranged at the tail end of the threaded sleeve or one end of the rotating arm, the pin shaft is arranged on the rotating arm or the threaded sleeve, and the pin shaft can slide along the length direction of the limiting sliding groove.

According to the technical scheme, the valve opening and closing indicating device further comprises an opening and closing indicating assembly for displaying the opening and closing state of the valve; the opening and closing indicating assembly comprises a pointer and a display board, the pointer is connected with a transmission shaft of the force application mechanism through a lead screw thread pair, the pointer axially moves along with the rotation of the transmission shaft, and the display board is fixedly connected with the valve body.

According to the technical scheme, the transmission shaft is arranged on the pressing sleeve through the bearing, the transmission shaft and the threaded sleeve are pressed and mounted on the valve body through the pressing sleeve, and the valve body is fixed on the support through the connecting flange.

According to the technical scheme, the threaded sleeve and the valve body are sealed through the sealing filler.

According to the technical scheme, the valve disc assembly comprises a valve disc, a ball head, a ball sleeve, a pressing ring and a sealing ring, the valve disc is in limit connection with the ball head through the ball sleeve, and the sealing ring is pressed on the disc surface of the valve disc through the pressing ring and is in sealing configuration with the valve seat.

The beneficial effects obtained by the invention are as follows:

1. this emergent tongue valve convenient operation, certain depth range under water, transmission can adapt to the deformation of hull structure, and the sealing material is stand wear and tear, ageing resistance is good, and pin joint part relative motion is nimble, not fallen.

2. The threaded sleeve limiting sliding sleeve mechanism is adopted to replace the existing emergency tongue valve threaded slider connecting mechanism, the relative movement of parts at a hinge point is flexible and does not fall off, the operation is convenient, and the manual operation can be easily realized;

3. by adopting each sealing component, the sealing device of the transmission mechanism penetrating through the pressure body part can keep zero leakage within a certain depth range under water.

Drawings

Fig. 1 is an assembly view of an emergency flapper valve provided in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an emergency flapper valve provided by an embodiment of the invention.

Fig. 3 is an enlarged view of the hinge G of fig. 2.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, the present embodiment provides an emergency flapper valve including a valve body 5, a seat 7, a valve disc assembly, and a valve seat 11. The valve body 5 penetrates through and is fixed in the connecting flange 6, the connecting flange 6 is fixedly arranged on the support 7, and the support 7 is fixed on the pressure shell. The valve disc assembly comprises a valve disc 14, a ball head 16, a ball sleeve 15, a pressing ring and a T-shaped sealing ring 12, the valve disc 14 is in limited connection with the ball head 16 through the ball sleeve 15, the T-shaped sealing ring 12 is pressed on the disc surface of the valve disc 14 through the pressing ring 13 and is in sealed configuration with a valve seat 11 through an O-shaped sealing ring 17, the valve seat is fixedly arranged on an emergency flapper coaming, and the emergency flapper coaming and a pressure-resistant shell are arranged at a certain included angle. Still include the transmission subassembly, the transmission subassembly includes application of force mechanism, pendulum changes mechanism, rocking arm 10, application of force mechanism and 5 sealed configurations of valve body pass behind the valve body 5 for pendulum changes the mechanism and provide drive power, the tail end of pendulum changes the articulated setting of rocking arm 10, the one end and the valve disk subassembly fixed connection of rocking arm 10, the other end is articulated with disk seat 11.

The swing mechanism comprises a rotating arm 8 and a transmission rod 9, one end of the rotating arm 8 is hinged with the force application mechanism, the other end of the rotating arm is hinged with the transmission rod 9, the transmission rod 9 is hinged with a rocker arm 10, the rotating arm 8 is bent, and the turning part of the rotating arm 8 is hinged on the support 7 to form a lever structure.

The force application mechanism is a screw thread pair force application mechanism. The force application mechanism comprises a threaded sleeve 4 and a transmission shaft 21, the threaded sleeve 4 is hermetically arranged in an inner hole of the valve body 5 and can axially slide along the inner hole of the valve body 5, the transmission shaft 21 is in threaded connection with the threaded sleeve 4, the transmission shaft 21 is arranged on a pressing sleeve 19 through a bearing, the pressing sleeve 19 presses the transmission shaft 21 and the threaded sleeve 4 on the valve body 5, the threaded sleeve 4 is axially slid by driving the transmission shaft 21 to rotate, and the threaded sleeve 4 is hinged to the rotating arm 8. In this embodiment, a hand wheel 1 is connected to the tail of the transmission shaft, i.e. the hand wheel is rotated manually to control the opening and closing of the valve. The method specifically comprises the following steps: the transmission shaft 21 is driven to rotate by rotating the hand wheel, and as the transmission shaft 21 is arranged on the pressing sleeve 19 through a bearing, the transmission shaft 21 and the threaded sleeve 4 are configured through a screw pair of the lead screw, namely, the rotation motion of the transmission shaft is converted into the axial motion of the threaded sleeve 4.

Referring to the principle of the transmission device in fig. 2, a hand wheel 1 is fixedly connected with a transmission shaft 21, the transmission shaft 21 is in threaded fit with a threaded sleeve 4, the threaded sleeve 4 is hinged with one end of a rotating arm 8 at a point G, the other end of the rotating arm 8 is hinged with one end of a transmission rod 9 at a point E, the other end of the transmission rod 9 is hinged with a rocker arm 10 at a point B, the rocker arm 10 is fixedly connected with a ball head 16 at a point C, and the ball head 16 is in limited connection with a valve disc 14 at a point D through a ball sleeve 15; the valve body 5 penetrates through the connecting flange 6 and is fixedly connected to the connecting flange 6, the transmission shaft 21 and the threaded sleeve 4 are limited by the pressing sleeve 19 on the valve body 5 and penetrate through the valve body 5, the bottom surface of the support 7 is fixedly connected with the connecting flange 6, the extending end of the support 7 is hinged to the rotating arm 8 at the point F, and the valve seat 11 is fixedly connected with the emergency valve coaming.

Referring to fig. 3, in order to facilitate the operation and prevent the hinge point from falling off, the threaded sleeve 4 is hinged with one end of the rotating arm 8 at a point G, and a limit sliding sleeve type design is adopted. Namely, the hinged point of the tail end of the threaded sleeve 4 and the rotating arm 8 is connected by adopting a limiting sliding mechanism, and the method specifically comprises the following steps: the limiting sliding mechanism comprises a limiting sliding groove 401 and a pin shaft 402, wherein the limiting sliding groove 401 is arranged at the tail end of the threaded sleeve 4 or one end of the rotating arm 8, the pin shaft 402 is arranged on the rotating arm 8 or the threaded sleeve 4, and the pin shaft 402 can slide along the length direction of the limiting sliding groove 401.

In the embodiment, the valve further comprises an opening and closing indicating assembly for displaying the opening and closing state of the valve; the opening and closing indicating assembly comprises a pointer 2 and a display panel 3, the pointer 2 is connected with a transmission shaft 21 of the force application mechanism through a lead screw thread pair, the pointer 2 axially moves along with the rotation of the transmission shaft 21, the display panel 3 is fixedly connected with the valve body, and the combination of the pointer and the display panel can display the opening and closing state of the valve.

The sealing assembly in the embodiment includes, but is not limited to, various packing sealing rings, sealing rings and sealing rings which are arranged everywhere and have various functions; for example: and a packing sealing ring 20 is filled at the sealing end of the pressing sleeve 19 between the threaded sleeve 4 and the inner cavity of the valve body 5, and further the sealing packing is V-shaped PTFE packing. The top ends of the threaded sleeve 4 and the valve body 5 are positioned on a sealing part of a pressing sleeve 19 in a ballast water tank, and the sealing ring is an O-shaped FKM sealing ring; a sealing ring 17 is arranged on a sealing surface between the valve seat 11 and the emergency flapper valve enclosure plate, and the sealing ring is an O-shaped FKM sealing ring; and a T-shaped sealing ring 12 is arranged on the sealing surface between the disc surface of the valve disc 14 and the valve seat 11, and the sealing ring is a T-shaped sealing ring of a rubber compound 11A group. By adopting the novel sealing assembly, the sealing device of the transmission mechanism penetrating through the pressure body part can keep zero leakage within a certain depth range underwater.

The working process of the emergency flapper valve and the transmission device thereof provided by the embodiment is as follows: referring to fig. 1-3, the valve is normally in a closed state, when the hand wheel 1 is rotated, the hand wheel 1 drives the transmission shaft 21, the transmission shaft 21 converts a spiral motion into an axial motion of the threaded sleeve 4 under the action of the threaded sleeve 4, the threaded sleeve 4 drives the rotating arm 8 to rotate around a pivot point F, a limiting sliding mechanism is adopted at a hinged position of the tail end of the threaded sleeve 4 and the rotating arm 8, a movable gap is formed to ensure the relative motion of the tail end of the threaded sleeve 4 and the rotating arm 8, the limiting function is realized, the falling-off is prevented, the rotating arm 8 pulls the transmission rod 9 to transmit force and displacement to the rocker arm 10, and the ball head 16 is driven to drive the valve disc 14 to open.

Claims

1. An emergent tongue valve, includes valve body, support, valve disc subassembly, disk seat, the valve body is installed on the support, valve disc subassembly sets with the disk seat mutually, its characterized in that: the valve body is sealed and arranged, the valve body penetrates through the valve body and then provides driving force for the swing mechanism, the tail end of the swing mechanism is hinged to the rocker arm, one end of the rocker arm is fixedly connected with the valve disc assembly, the other end of the rocker arm is hinged to the valve seat, the force application mechanism is a lead screw thread pair force application mechanism, the force application mechanism comprises a threaded sleeve which is hermetically arranged in a valve body inner hole and can axially slide along the valve body inner hole and a transmission shaft which is in threaded connection with the threaded sleeve, the transmission shaft is arranged at the end part of the valve body through a bearing and rotates through driving the transmission shaft to realize axial sliding of the threaded sleeve, the threaded sleeve is hinged to a rotating arm of the swing mechanism, the swing mechanism comprises a rotating arm and a transmission rod, and one end of the rotating arm is hinged to the force application mechanism, the other end of the connecting rod is hinged with the transmission rod, the transmission rod is hinged with the rocker arm, the rocker arm is bent, the turning part of the rocker arm is hinged on the support to form a lever structure, the tail end of the threaded sleeve is connected with the hinge point of the rocker arm through a limiting sliding mechanism, the limiting sliding mechanism comprises a limiting sliding groove and a pin shaft, the limiting sliding groove is arranged at the tail end of the threaded sleeve or one end of the rocker arm, the pin shaft is arranged on the rocker arm or the threaded sleeve, and the pin shaft can slide along the length direction of the limiting sliding groove.

2. The emergency flapper valve of claim 1, wherein: the valve opening and closing indicating assembly is used for displaying the opening and closing state of the valve; the opening and closing indicating assembly comprises a pointer and a display board, the pointer is connected with a transmission shaft of the force application mechanism through a lead screw thread pair, the pointer axially moves along with the rotation of the transmission shaft, and the display board is fixedly connected with the valve body.

3. The emergency flapper valve of claim 1, wherein: the transmission shaft is arranged on the pressing sleeve through a bearing, the pressing sleeve presses and installs the transmission shaft and the threaded sleeve on the valve body, and the valve body is fixed on the support through the connecting flange.

4. The emergency flapper valve of claim 3, wherein: the threaded sleeve and the valve body are sealed through sealing filler.

5. The emergency flapper valve of claim 1, wherein: the valve disc assembly comprises a valve disc, a ball head, a ball sleeve, a pressing ring and a sealing ring, the valve disc is in limit connection with the ball head through the ball sleeve, and the sealing ring is pressed on the disc surface of the valve disc through the pressing ring and is in sealing configuration with the valve seat.