CN217634175U

CN217634175U - Trip mechanism of cut-off valve

Info

Publication number: CN217634175U
Application number: CN202122489370.4U
Authority: CN
Inventors: 祝长森
Original assignee: Sichuan Jianwei Eshan Valve Co ltd
Current assignee: Sichuan Jianwei Eshan Valve Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-10-21
Anticipated expiration: 2031-10-15

Abstract

The utility model relates to a gas transportation technical field, especially a trip valve tripping device. This unhook mechanism, pressure regulator include valve body and passageway, still include unhook device and valve device, and the unhook device is connected with valve device, and the unhook device includes feedback pipe, actuating mechanism and couple, and the couple is hung with valve device and is detained and be connected, and the one end and the actuating mechanism of couple are connected, and the one end and the valve body switch-on of feedback pipe, its other end and actuating mechanism switch-on still include drive mechanism, and drive mechanism passes valve device and is connected with the one end that actuating mechanism was kept away from to the couple. Adopt the above structure of the utility model provides an when reseing, start drive mechanism, drive mechanism stimulates the couple and keeps away from drive mechanism's one end, can make the couple resume original position gradually, because drive mechanism has passed valving, when the couple resets, can pull down valving, makes the couple lock again to the case at last, accomplishes the process that resets.

Description

Trip mechanism of cut-off valve

Technical Field

The utility model relates to a gas transportation technical field, especially a trip valve tripping device.

Background

The cut-off valve for the town gas transmission and distribution system is a gas safety protection device executing CJ/T335 standard of Town gas cut-off valve and blow-off valve, and is an emergency cut-off product independent of a gas pressure regulating system realized by a mechanical structure. This kind of trip valve is usually installed in the open air, and it monitors the valve before or after the valve atmospheric pressure, and when atmospheric pressure was too high or low, the tripping device of trip valve can trigger the tripping action to automatic cutout pipeline air supply, but at present behind the automatic cutout pipeline air supply, it is extremely inconvenient to reset to the trip valve.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the trip mechanism of the cut-off valve is provided aiming at the problem that the reset of the cut-off valve is inconvenient in the prior art.

In order to realize the purpose, the utility model discloses a technical scheme be:

a trip mechanism of a cut-off valve comprises a pressure regulator, wherein the pressure regulator comprises a valve body and a channel, and further comprises a unhooking device and a valve device, and the unhooking device is connected with the valve device;

the unhooking device comprises a feedback pipe and a hook, the hook is connected with a hanging buckle of the valve device, one end of the hook is connected with the starting mechanism, the starting mechanism is used for pushing the hook to be detached from the valve device, one end of the feedback pipe is communicated with the valve body, and the other end of the feedback pipe is communicated with the starting mechanism;

the valve device is characterized by further comprising a traction mechanism, the traction mechanism penetrates through the valve device and is connected with one end, far away from the starting mechanism, of the hook, and the traction mechanism is used for pulling the hook to move away from one end of the starting mechanism.

Adopt the above-mentioned structure that the utility model provides, valve device's one end is connected in the valve body, one end is connected inside unhook device, the feedback pipe connector has passed through the atmospheric pressure that rises of valve body and actuating mechanism, make atmospheric pressure in the valve body keep level with actuating mechanism's atmospheric pressure, when atmospheric pressure in the valve body is too big, will provide the power that promotes for actuating mechanism, promote the couple and rotate around the pin joint, make the couple break away from valve device, valve device bounces closes the passageway of whole valve body, when reseing, start drive mechanism, actuating mechanism stimulates the couple and keeps away from actuating mechanism's one end, can make the couple resume original position gradually, because drive mechanism has passed valve device, when the couple resets, can pull down valve device, make couple lock again to the case at last, accomplish the process that resets.

As the utility model discloses an optimized scheme, valve device case and spring, the one end of case is equipped with the valve head, its other end with the couple is connected, the case have the valve head one end pass through spring coupling in inside the valve body.

As a preferred scheme of the utility model, actuating mechanism includes piston channel and piston push rod one, piston push rod is located slide in the piston channel, the feedback pipe with piston channel connects, piston push rod's one end with the couple rotates to be connected.

As the preferred scheme of the utility model, piston push rod one includes piston head one and piston rod one, the piston rod is kept away from the one end of piston head with the couple is connected.

As the preferred scheme of the utility model, piston passageway still is equipped with piston push rod two, piston push rod two includes piston head two and piston rod two, piston head one with two subtend settings of piston head, piston head one with leave the clearance between the piston head two.

As the preferred scheme of the utility model, the afterbody of piston rod two is equipped with spacing way, piston rod two is located slide in spacing way.

As the utility model discloses a preferred scheme, the middle part of piston rod one is equipped with the gag lever post, piston rod one is located slide in the gag lever post, the gag lever post is fixed in the unhooking device.

As the utility model discloses an optimal scheme, drive mechanism includes haulage rope, a serving section of thick bamboo and motor, the one end of haulage rope is passed the one end of case with the piston push rod was kept away from to the couple one end is connected, its other end with a serving section of thick bamboo is connected, the motor is used for driving a serving section of thick bamboo and rotates.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

adopt the above-mentioned structure that the utility model provides, valve device's one end is connected in the valve body, one end is connected inside unhook device, the feedback pipe connector has passed through the atmospheric pressure that plays of valve body and actuating mechanism, make atmospheric pressure in the valve body keep level with actuating mechanism's atmospheric pressure, when atmospheric pressure in the valve body is too big, will provide the power that promotes for actuating mechanism, promote the couple and wind the removal, make the couple break away from valve device, valve device bounces closes the passageway of whole valve body, when reseing, start drive mechanism, actuating mechanism stimulates the couple and keeps away from actuating mechanism's one end, can make the couple resume original position gradually, because drive mechanism has passed valve device, when the couple resets, can pull down valve device, make the couple lock again to the case at last, accomplish the process that resets.

Drawings

Fig. 1 is a schematic structural view of the trip mechanism of the cut-off valve of the present invention;

FIG. 2 is a schematic view of the regulator of the present invention;

the labels in the figure are: the device comprises a valve body 1, a channel 2, a spring 3, a unhooking device 4, a valve head 5, a valve core 6, a hook 7, a rope winding drum 8, a traction rope 9, a feedback pipe 10, a position limiting channel 11, a piston channel 12, a piston rod II 13, a piston head II 14, a piston head I15, a position limiting rod 16 and a piston rod I17.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail 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.

Referring to fig. 1-2, the utility model provides a pair of trip valve tripping device, including the voltage regulator, shown voltage regulator mainly includes valve body 1 and passageway 2, and pressure regulating device and trip valve in addition set up in the top of voltage regulator, and the trip valve sets up in the bottom of voltage regulator.

Inside the shut-off valve are mainly included a unhooking device 4 and a valve device, the movement of which is initiated by the unhooking device 4, the unhooking device 4 being connected to the bottom of the valve device.

Specifically, the unhooking device 4 comprises a feedback pipe 10 and a hook 7, the feedback pipe 10 is communicated with the starting mechanism and the channel 2, so that the air pressure in the starting mechanism is the same as that in the channel 2, one end of the starting mechanism is connected with the hook 7, and the hook 7 is hung on the buckle and the valve device.

A traction mechanism is fixedly connected to one end of the hook 7 close to the valve device, the traction mechanism can drag the hook 7 to move, and the traction mechanism penetrates through the valve device to be connected with the hook 7.

Adopt the above-mentioned structure that the utility model provides an, valving's one end is connected in valve body 1, one end is connected in unhook device 4 insidely, feedback pipe 10 has put through valve body 1 and actuating mechanism's the atmospheric pressure that plays, make atmospheric pressure in the valve body 1 keep level with actuating mechanism's atmospheric pressure, when atmospheric pressure in the valve body 1 is too big, will provide the power that promotes for actuating mechanism, promote couple 7 around removing, make couple 7 break away from valving, valving bounces and closes the passageway of whole valve body 1, when reseing, start drive mechanism, drive mechanism stimulates couple 7 and keeps away from actuating mechanism's one end, can make couple 7 resume original position gradually, because drive mechanism has passed valving, when couple 7 resets, can pull down valving, make couple 7 lock again to case 6 at last, the process of reseing is accomplished.

What needs to be further explained about the above structure is that the valve device includes a valve core 6 and a spring 3, one end of the valve core 6 is provided with a valve head 5, one end of the valve core 6 provided with the valve head 5 is located in the channel 2 of the valve body 1, one end of the valve core 6 is provided with a ring, the valve core 6 is connected with a hook 7 in a hanging and buckling manner through the ring, and one end of the valve core 6 provided with the valve head 5 is connected inside the valve body 1 through the spring 3.

The starting mechanism comprises a piston channel 12 and a piston push rod I, the piston push rod I is located in the piston channel 12 and slides, a feedback pipe 10 is communicated with the piston channel 12, the feedback pipe 10 directly guides air pressure in the channel 2 into the piston channel 12, the piston push rod is enabled to sense the air pressure and pushes the piston push rod I to move, more specifically, the piston push rod I comprises a piston head I15 and a piston rod I17, one circle of the piston head I15 is in sealing sliding connection with the inner wall of the piston channel 12, a rubber sealing ring can be adopted for sealing, when the air pressure is increased, the piston head I15 can be pushed to move, the piston rod I17 is further pushed to move, and one end, far away from the piston head I15, of the piston rod I17 is connected with a hook 7.

In order to enable the piston push rod I to obtain certain buffering when moving, a piston push rod II is further arranged in the piston channel 12 and comprises a piston head II 14 and a piston rod II 13, the piston head II 14 and the piston head I15 are oppositely arranged, a certain gap is reserved between the piston head II 14 and the piston head I15, the piston push rod II is used for sensing air pressure brought by the feedback tube 10, when the piston head II 14 moves inwards, due to the fact that the certain gap is reserved between the piston head II 14 and the piston head I15, air in the gap can be compressed, when pressure is released, the piston push rod I is pushed to serve as a spring, and the piston push rod I can obtain certain buffering when moving.

In addition, the tail part of the second piston rod 13 is provided with a limit channel 11, and the second piston rod 13 is positioned in the limit channel 11 to slide, so that the moving direction of the second piston rod 13 is limited on one hand, and the second piston rod 13 does not shake on the other hand. Similarly, a limiting rod 16 is arranged in the middle of the first piston rod 17, the first piston rod 17 slides in the limiting rod 16, the limiting rod 16 is fixed in the unhooking device 4, and the moving direction of the first piston rod 17 is limited by the limiting rod 16.

In one embodiment, the traction mechanism comprises a traction rope 9, a rope winding drum 8 and a motor, one end of the traction rope 9 penetrates through one end, provided with a circular ring, of the valve core 6 to be connected with one end, far away from the piston push rod, of the hook 7, the other end of the traction rope is connected with the rope winding drum 8, the motor is used for driving the rope winding drum 8 to rotate, and a plurality of movable pulleys are installed on the motion track of the traction rope 9 to plan the motion track.

The basic working principle of the embodiment is that the guiding rope 9 is adjusted to be in a soft state, pressure is transmitted into the piston channel 12 through the feedback pipe 10, when air pressure is suddenly increased, the piston push rod II pushes the piston push rod to move inwards, the piston rod I17 of the piston push rod I drives the hook 7, the hook 7 moves and is separated from the tail portion of the valve core 6, after the valve core 6 is separated from the hook, the valve core 6 is bounced up through the spring 3, the channel 2 is closed through the valve head 5 on the valve core 6, when the valve core needs to be reset, the motor in the traction mechanism is started, the motor drives the rope winding drum 8 to rotate, the traction rope 9 drives the hook 7 to reset, and as the traction rope 9 penetrates through a circular ring at the bottom of the valve core 6, the valve core 6 is pulled down in the process of resetting the hook 7, and finally the hook 7 is buckled on the valve core 6 again.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A trip mechanism of a cut-off valve comprises a pressure regulator, wherein the pressure regulator comprises a valve body (1) and a channel (2), and further comprises a unhooking device (4) and a valve device, wherein the unhooking device (4) is connected with the valve device;

the unhooking device (4) comprises a feedback pipe (10) and a hook (7), the hook (7) is connected with a hanging buckle of the valve device, one end of the hook (7) is connected with a starting mechanism, the starting mechanism is used for pushing the hook (7) to be detached from the valve device, one end of the feedback pipe (10) is communicated with the valve body (1), and the other end of the feedback pipe is communicated with the starting mechanism;

the valve device is characterized by further comprising a traction mechanism, the traction mechanism penetrates through the valve device and is connected with one end, far away from the starting mechanism, of the hook (7), and the traction mechanism is used for pulling the hook (7) to move away from one end of the starting mechanism.

2. The trip mechanism of the cut-off valve according to claim 1, characterized in that the valve device comprises a valve core (6) and a spring (3), one end of the valve core (6) is provided with a valve head (5), the other end of the valve core is connected with the hook (7), and the end of the valve core (6) with the valve head (5) is connected to the inside of the valve body (1) through the spring (3).

3. The trip mechanism for a shut-off valve according to claim 1, characterized in that the actuating mechanism comprises a piston channel (12) and a first piston push rod, the piston push rod slides in the piston channel (12), the feedback tube (10) is connected with the piston channel (12), and one end of the first piston push rod is connected with the hook (7).

4. A trip mechanism for a shut off valve according to claim 3 wherein the first piston push rod comprises a first piston head (15) and a first piston rod (17), the end of the first piston rod remote from the first piston head being rotatably connected to the latch (7).

5. The trip mechanism of the cut-off valve according to claim 4, wherein the piston channel (12) is further provided with a second piston push rod, the second piston push rod comprises a second piston head (14) and a second piston rod (13), the first piston head (15) and the second piston head (14) are arranged in an opposite manner, and a gap is reserved between the first piston head (15) and the second piston head (14).

6. The trip mechanism of the cut-off valve according to claim 5, wherein the tail part of the second piston rod (13) is provided with a limit way (11), and the second piston rod (13) is positioned in the limit way (11) to slide.

7. The trip mechanism for the shut-off valve according to claim 4, wherein a limit rod (16) is arranged in the middle of the first piston rod (17), the first piston rod (17) is positioned in the limit rod (16) to slide, and the limit rod (16) is fixed in the unhooking device (4).

8. The trip mechanism of the cut-off valve according to claim 2, wherein the traction mechanism comprises a traction rope (9), a rope winding drum (8) and a motor, one end of the traction rope (9) penetrates through one end of the valve core (6) to be connected with one end of the hook (7) far away from the piston push rod, the other end of the traction rope is connected with the rope winding drum (8), and the motor is used for driving the rope winding drum (8) to rotate.