CN109882651B

CN109882651B - High-pressure quick shut-off valve

Info

Publication number: CN109882651B
Application number: CN201910196526.4A
Authority: CN
Inventors: 项进博; 项杉杉; 项诗妍
Original assignee: Hangong Valve Co Ltd
Current assignee: Hangong Valve Co Ltd
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2020-03-17
Anticipated expiration: 2039-03-15
Also published as: CN109882651A

Abstract

The invention discloses a high-pressure quick shut-off valve, which structurally comprises a valve body, a valve seat, a left flange joint, a right flange joint, a water inlet channel, a water outlet channel, a piston, a valve rod, a resetting device and a locking device, and discloses the high-pressure quick shut-off valve which is designed by the resetting device and the locking device, solves the problems that the traditional shut-off valve is closed through the rotation of the valve, the required time is long, and the valve is not completely closed possibly to cause accidents, the first clamping hook and the second clamping hook are inserted into the first clamping groove and the second clamping groove by pressing the top plate downwards and compressing the spring, the first gear is driven to rotate by rotating the rotating handle, the second gear is driven to rotate by the transmission of the chain, the first clamping hook and the second clamping hook are enabled to rotate, the first clamping block and the second clamping block are respectively clamped for fixing, the valve is quickly and simply closed, and accidents are avoided.

Description

High-pressure quick shut-off valve

Technical Field

The invention relates to the technical field of shut-off valves, in particular to a high-pressure quick shut-off valve.

Background

The rapid shutoff valve is an important component of a thermal power plant unit safety system, is important safety equipment for ensuring the safe operation of a steam extraction unit and preventing steam backflow of a steam extraction pipeline from causing turbine overspeed accidents, and is technically improved along with the rapid development of scientific technology.

Disclosure of Invention

In order to overcome the defects of the prior art, the high-pressure quick shut-off valve is provided, the problems that the conventional valve is closed through rotation, the required time is long, and the accident is caused because the valve is not completely closed are solved, and the beneficial effects of quickly and simply closing the valve and avoiding the accident are achieved.

The invention is realized by the following technical scheme: the invention provides a high-pressure quick shut-off valve, which comprises a valve body, a valve seat, a left flange interface, a right flange interface, a water inlet channel, a water outlet channel, a piston, a valve rod, a filter screen, a resetting device and a locking device, wherein the top end of the valve seat is vertically welded with the bottom end of the valve body, the right end of the left flange interface is welded with the left end of the valve body, the left end of the right flange interface is welded with the right end of the valve body, the water inlet channel is arranged at the left end inside the valve body, the water outlet channel is arranged at the right end inside the valve body, the piston is arranged between the right end of the water inlet channel and the left end of the water outlet channel, the left end of the valve rod is in threaded connection with the upper end of the piston, the upper end of the valve rod penetrates through the top end of the valve body, the resetting device comprises a base, a first clamping groove, a second clamping groove, a first clamping block, a second clamping block, a spring and a top plate, wherein the left end and the right end of the base are in bolted connection with the left side and the right side of the top end of the valve body, the first clamping groove is arranged on the right side of the top end of the base, the first clamping block is arranged in the first clamping groove and is welded with the upper side of the front end in the first clamping groove, the second clamping block is arranged in the second clamping groove and is welded with the upper side of the front end in the second clamping groove, the top end of the spring is welded with the bottom end of the top plate, the bottom end of the spring is welded with the middle part of the top end of the base, the upper end of the valve rod passes through the inside of the spring, the top end of the valve rod is in buckled connection with the middle part of the top end of the top plate through a nut, the locking device comprises a protective cover, a first clamping, first trip upper end passes safety cover top right side and carries out the left end with safety cover top right side and is connected, first trip lower extreme passes roof top right side and rotates with roof top right side to be connected, second trip upper end is passed roof top left side and is rotated with roof top left side and is connected, first gear inboard and first trip outside upper end weld, second gear inboard and second trip outside upper end weld, chain right-hand member inboard and first gear outside intermeshing, the inboard and the second gear outside intermeshing of chain left end, it welds bottom and first trip top to change.

Furthermore, the bottom of the right end of the water inlet channel is communicated with the top of the left end of the water outlet channel.

Furthermore, the first clamping groove and the second clamping groove are rectangular and are arranged on the top end of the base in a straight line.

Furthermore, the first hook and the second hook are L-shaped, and the rotation angle is 0-90 degrees.

Furthermore, the shape of the rotating handle is circular, the diameter of the rotating handle is 5cm, and anti-skid stripes are arranged on the outer surface of the rotating handle.

Further, the protective cover is rectangular, 12cm in length, 6cm in width and 4cm in height.

Further, the top plate 97 has a length of 15cm, a width of 10cm and a height of 1 cm.

Furthermore, the base is made of nodular cast iron.

Furthermore, the first clamping hook is made of tool steel.

Compared with the prior art, the invention has the following beneficial effects:

for solving the tradition and rotating to close through the valve, the required time is longer, and probably the valve does not close completely, cause the problem of accident, reset device and locking device design are proposed in this design, the tradition is solved and is rotated through the valve and close, the required time is longer, and probably the valve does not close completely, cause the problem of accident, through pushing down the roof, the spring compression, insert first trip and second trip in first draw-in groove and the second draw-in groove, and through rotating the handle, drive first gear revolve, by chain drive, drive second gear revolve, make first trip and second trip revolve, block first fixture block and second fixture block respectively and fix, reach quick succinct valve closing, avoid the beneficial effect of occurence of failure.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of the present invention;

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

FIG. 3 is a schematic view of the internal structure of the resetting device according to the present invention;

FIG. 4 is a schematic view of the internal structure of the locking device of the present invention;

in the figure: the valve comprises a valve body-1, a valve seat-2, a left flange joint-3, a right flange joint-4, a water inlet channel-5, a water outlet channel-6, a piston-7, a valve rod-8, a reset device-9, a locking device-10, a filter screen-11, a base-91, a first clamping groove-92, a second clamping groove-93, a first clamping block-94, a second clamping block-95, a spring-96, a top plate-97, a protective cover-101, a first clamping hook-102, a second clamping hook-103, a first gear-104, a second gear-105, a chain-106 and a rotating handle-107.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2, 3 and 4, the present invention provides a high pressure quick shut-off valve: the valve comprises a valve body 1, a valve seat 2, a left flange connector 3, a right flange connector 4, a water inlet channel 5, a water outlet channel 6, a piston 7, a valve rod 8, a filter screen 11, a reset device 9 and a locking device 10, wherein the top end of the valve seat 2 is vertically welded with the bottom end of the valve body 1, the right end of the left flange connector 3 is welded with the left end of the valve body 1, the left end of the right flange connector 4 is welded with the right end of the valve body 1, the water inlet channel 5 is arranged at the left end inside the valve body 1, the water outlet channel 6 is arranged at the right end inside the valve body 1, the piston 7 is arranged between the right end of the water inlet channel 5 and the left end of the water outlet channel 6, the left end of the valve rod 8 is in threaded connection with the upper end of the piston 7, the upper end of the valve rod 8 penetrates through the top end of the valve body 1, the reset device 9 is arranged, A first slot 92, a second slot 93, a first block 94, a second block 95, a spring 96 and a top plate 97, wherein the left and right ends of the base 91 are connected with the left and right sides of the top end of the valve body 1 by bolts, the first slot 92 is arranged at the right side of the top end of the base 91, the first block 94 is arranged in the first slot 92 and welded with the upper side of the front end in the first slot 92, the second block 95 is arranged in the second slot 93 and welded with the upper side of the front end in the second slot 93, the top end of the spring 96 is welded with the bottom end of the top plate 97, the bottom end of the spring 96 is welded with the middle part of the top end of the base 91, the upper end of the valve rod 8 passes through the spring 96, the top end of the valve rod 8 is connected with the middle part of the top end of the top plate 97 by a nut in a buckling manner, the locking device 10 is composed of a protective cover 101, a first hook, the left end of the protection cover 101 is in threaded connection with the top end of the protection cover 101 through a screw, the upper end of the first clamping hook 102 penetrates through the right side of the top end of the protection cover 101 and is connected with the left side of the top end of the protection cover 101 in a left-hand mode, the lower end of the first clamping hook 102 penetrates through the right side of the top end of the top plate 97 and is connected with the right side of the top end of the top plate 97 in a rotating mode, the upper end of the second clamping hook 103 penetrates through the left side of the top end of the top plate 97 and is connected with the left side of the top end of the top plate 97 in a rotating mode, the inner side of the first gear 104 is welded with the upper end of the outer side of the first clamping hook 102, the inner side of the right end of the chain 106 is meshed with the outer side of the.

The bottom of the right end of the water inlet channel 5 is communicated with the top of the left end of the water outlet channel 6, so that water can flow conveniently, and water flow can normally pass through the water inlet channel.

The first and

second slots

92 and 93 are rectangular and arranged in a straight line on the top of the base 91, so that the first and

second hooks

102 and 103 can be effectively inserted into the slots for fixing.

The first hook 102 and the second hook 103 are L-shaped, and have a rotation angle of 0-90 degrees, which can be effectively fixed, and the rotation angle is limited to prevent the first hook 102 and the second hook 103 from rotating over the head.

Wherein, the shape of the rotating handle 107 is circular, the diameter is 5cm, and the outer surface is provided with anti-skid stripes, so that the friction can be effectively increased, and the hand slip can be avoided.

The protection cover 101 is rectangular, 12cm long, 6cm wide and 4cm high, and can effectively prevent the chain 106 from being damaged by the outside.

The length of the top plate 97 is 15cm, the width of the top plate is 10cm, the height of the top plate is 1cm, the contact area is increased, and the valve rod 8 can be pressed down conveniently.

The base 91 is made of nodular cast iron, and is high in strength, sufficient in toughness and high in wear resistance.

The first hook 102 is made of tool steel, and has high hardness, good wear resistance and wide application range.

The base 91 is made of nodular cast iron, wherein the nodular cast iron is a high-strength cast iron material developed in the 20 th century and the fifties, the comprehensive performance of the high-strength cast iron material is close to that of steel, and the high-strength cast iron material has been successfully used for casting parts with complex stress and higher requirements on strength, toughness and wear resistance, and the nodular cast iron has been rapidly developed into a cast iron material which is second to gray cast iron and has very wide application, namely 'steel is replaced by iron', the nodular cast iron mainly refers to the nodular cast iron, and the nodular cast iron is spheroidal graphite obtained through spheroidization and inoculation treatment, so that the mechanical properties of the cast iron are effectively improved, particularly, the plasticity and the toughness are improved, and the strength higher than that of carbon steel is obtained.

The working principle is as follows: firstly, a water inlet pipe is connected with a valve body 1 through a left flange connector 3, then a water outlet pipe is connected with a right flange connector 4, so that water can enter a water outlet channel 6 through a water inlet channel 5 to complete communication, in an opening state, a piston 7 is positioned at the upper end of the water inlet channel 5, a filter screen 11 plays a role of blocking pollution impurities, when a valve needs to be closed and water is blocked, the valve can be quickly closed through a resetting device 9 and a locking device 10, a top plate 97 is pressed down firstly, so that a spring 96 is compressed, a valve rod 8 is also descended, the piston 7 is pressed down, the water inlet channel 5 and the water outlet channel 6 are connected and blocked, water flow is blocked, when the top plate 97 cannot be pressed down continuously and a first clamping hook 102 and a second clamping hook 103 are deeply inserted into a first clamping groove 92 and a second clamping groove 93, a rotating handle 107 is rotated, the rotating handle 107 drives the first clamping hook 102 to rotate, a first gear 104 is arranged at the upper end of the first clamping, and the first gear 104 is connected with the second gear 105 through the chain 106, and then the first gear 104 rotates, the second gear 105 also rotates, so as to drive the second hook 103 to rotate, the first hook 102 and the second hook 103 respectively rotate 90 degrees in the first slot 92 and the second slot 93, and are just positioned at the lower ends of the first fixture block 94 and the second fixture block 95, so that the first hook 102 and the second hook 103 are fixed, so that the piston 7 is not moved, and the blocking is completed, when the valve is to be opened, the rotating handle 107 is rotated in the opposite direction, so that the first hook 102 and the second hook 103 are separated from the first fixture block 94 and the second fixture block 95, the top plate 97 is jacked upwards under the action of the spring 96, so that the valve rod 8 is upwards to drive the piston 7 upwards, so that the water inlet passage 5 and the water outlet passage 6 are communicated, the design of the resetting device 9 and the locking device 10 solves the problem that the traditional valve is closed through rotation, the required time is longer, and probably the valve does not close completely, cause the problem of accident, through pushing down roof 97, spring 96 compression, insert first trip 102 and second trip 103 in first draw-in groove 92 and second draw-in groove 93, and through rotating handle 107, drive first gear 104 and rotate, by chain 106 transmission, drive second gear 105 and rotate, make first trip 102 and second trip 103 rotate, block first fixture block 94 and second fixture block 95 respectively and fix, reach quick succinct valve of closing, avoid the beneficial effect of occurence of failure.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention, the technical solutions and the inventive concepts of the present invention equivalent or changed within the technical scope of the present invention.

Claims

1. The utility model provides a high pressure quick shutoff valve, includes valve body (1), disk seat (2), left flange interface (3), right flange interface (4), inhalant canal (5), exhalant canal (6), piston (7), valve rod (8) and filter screen (11), its characterized in that: still include resetting means (9) and locking device (10), perpendicular welding is carried out with valve body (1) bottom on disk seat (2) top, left side flange interface (3) right-hand member welds with valve body (1) left end, right side flange interface (4) left end welds with valve body (1) right-hand member, inhalant canal (5) set up at the inside left end of valve body (1), exhalant canal (6) set up at the inside right-hand member of valve body (1), piston (7) set up between inhalant canal (5) right-hand member and exhalant canal (6) left end, valve rod (8) left end and piston (7) upper end carry out threaded connection, valve body (1) top is passed to valve rod (8) upper end, resetting means (9) set up in valve body (1) top middle part, locking device (10) set up in resetting means (9) upper end, inhalant canal (5) inboard left end is provided with filter screen (11), the resetting device (9) consists of a base (91), a first clamping groove (92), a second clamping groove (93), a first clamping block (94), a second clamping block (95), a spring (96) and a top plate (97), wherein the left end and the right end of the base (91) are in bolt connection with the left side and the right side of the top end of the valve body (1), the first clamping groove (92) is arranged on the right side of the top end of the base (91), the first clamping block (94) is arranged in the first clamping groove (92) and is welded with the upper side of the front end in the first clamping groove (92), the second clamping block (95) is arranged in the second clamping groove (93) and is welded with the upper side of the front end in the second clamping groove (93), the top end of the spring (96) is welded with the bottom end of the top plate (97), the bottom end of the spring (96) is welded with the middle part of the top end of the base (91), the upper end of the valve rod (8, the top end of the valve rod (8) is in buckle connection with the middle of the top end of the top plate (97) through a nut, the locking device (10) is composed of a protective cover (101), a first clamping hook (102), a second clamping hook (103), a first gear (104), a second gear (105), a chain (106) and a rotating handle (107), the left end of the protective cover (101) is in threaded connection with the top end of the protective cover (101) through a screw, the upper end of the first clamping hook (102) penetrates through the right side of the top end of the protective cover (101) and is connected with the right side of the top end of the protective cover (101) at the left end, the lower end of the first clamping hook (102) penetrates through the right side of the top end of the top plate (97) and is in rotating connection with the right side of the top end of the top plate (97), the upper end of the second clamping hook (103) penetrates through the left side of the top end of the top plate (97) and is in rotating connection with, the inside of the second gear (105) is welded with the upper end of the outside of the second clamping hook (103), the inside of the right end of the chain (106) is meshed with the outside of the first gear (104), the inside of the left end of the chain (106) is meshed with the outside of the second gear (105), and the bottom end of the rotating handle (107) is welded with the top end of the first clamping hook (102).

2. A high pressure quick shut-off valve according to claim 1, wherein: the bottom of the right end of the water inlet channel (5) is communicated with the top of the left end of the water outlet channel (6).

3. A high pressure quick shut-off valve according to claim 1, wherein: the first clamping groove (92) and the second clamping groove (93) are rectangular and are arranged on the top end of the base (91) in a straight line.

4. A high pressure quick shut-off valve according to claim 1, wherein: the first clamping hook (102) and the second clamping hook (103) are L-shaped, and the rotation angle is 0-90 degrees.

5. A high pressure quick shut-off valve according to claim 1, wherein: the rotating handle (107) is circular, the diameter of the rotating handle is 5cm, and anti-skid stripes are arranged on the outer surface of the rotating handle.

6. A high pressure quick shut-off valve according to claim 1, wherein: the protective cover (101) is rectangular, 12cm in length, 6cm in width and 4cm in height.

7. A high pressure quick shut-off valve according to claim 1, wherein: the top plate (97) is 15cm long, 10cm wide and 1cm high.