CN212690865U

CN212690865U - Nuclear power is forged entirely and is fallen sealed packing chamber wedge gate valve

Info

Publication number: CN212690865U
Application number: CN202021420054.0U
Authority: CN
Inventors: 徐星; 沈地
Original assignee: Wuhan Yong Tai'an Valve Co ltd
Current assignee: Wuhan Yong Tai'an Valve Co ltd
Priority date: 2020-07-19
Filing date: 2020-07-19
Publication date: 2021-03-12
Anticipated expiration: 2030-07-19

Abstract

The utility model discloses a nuclear power forge-all sealing packing chamber wedge gate valve in the technical field of gate valves, which comprises a valve body, a valve seat is fixedly connected inside the valve body, a group of valve clacks are arranged in a communication channel of the valve body, a valve rod is fixedly connected at the top of the valve clack, a valve rod channel is fixedly connected at the top of the valve body, a packing chamber is fixedly arranged in the valve rod channel, a packing gland is fixedly connected at the top of the valve rod channel, the valve rod sequentially passes through the packing chamber and the packing gland, valve rod packing is filled between the packing chamber and the valve rod, a wedge ring surface is fixedly connected at the bottom of the packing chamber, a sealing inverted wedge surface is fixedly arranged on the side wall of the valve rod, the wedge ring surface is matched with the sealing inverted wedge surface, a plurality of upright posts are fixedly connected at the top of the valve rod channel, the valve rod packing is directly replaced without leaking the medium in the valve body.

Description

Nuclear power is forged entirely and is fallen sealed packing chamber wedge gate valve

Technical Field

The utility model relates to a gate valve technical field specifically is a nuclear power is forged completely and is fallen sealing packing chamber wedge gate valve.

Background

A wedge-shaped gate valve is one of gate valves. The two sealing surfaces are wedge-shaped because the sealing surfaces form a certain angle with the vertical center line. In general, the two sealing surfaces of the gate valve are wedge-shaped, and the angles between the sealing surfaces and the vertical center line are 2 degrees 52 degrees, 3 degrees 30 degrees, 5 degrees, 8 degrees, 10 degrees and the like. The wedge-shaped gate valve is divided into a rising stem gate valve, a non-rising stem gate valve, a wedge-shaped single gate valve and a wedge-shaped double gate valve. The driving method comprises the following steps: electric, pneumatic, manual, pneumatic-hydraulic and the like, and the connecting modes include a flange type, a welding type and a butt clamp type. The valve rod and the filler of a common gate valve are unstable, the filler is unstable and easy to leak and damage in the continuous opening and closing process, so that the valve body is not sealed well, a medium in the valve body overflows from the filler of the valve rod, the leakage is very dangerous in nuclear power work, the normal working operation is influenced, and the body surfacing sealing surface or the surfacing valve seat can be slightly deformed by thermal stress, so that the poor sealing is caused.

Based on this, the utility model designs a nuclear power is forged completely and is fallen sealed packing chamber wedge gate valve to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nuclear power is forged entirely and is fallen sealed packing chamber wedge gate valve to solve between the valve rod of the general gate valve that proposes in the above-mentioned background art and pack unstablely, in the continuous opening and close the in-process, pack unstablely, leak damage etc. easily, lead to the valve body sealed not good, the valve body inner medium spills over from the filler department of valve rod, leaks very dangerously in nuclear power work, influences normal work operation, sealed bad problem.

In order to achieve the above object, the utility model provides a following technical scheme:

a valve seat is fixedly connected inside the valve body, a group of valve clacks are arranged in a communication channel of the valve body, a universal ejection block is fixedly mounted in the middle of the valve clacks, a valve rod is fixedly connected to the top of the valve clacks, a valve rod channel is fixedly connected to the top of the valve body, a packing chamber is fixedly mounted in the valve rod channel, a pressing plate is fixedly connected to the top of the packing chamber, a packing gland is fixedly connected to the top of the valve rod channel, the packing gland is fixedly connected with the packing chamber through screws, the valve rod sequentially penetrates through the packing chamber and the packing gland, valve rod packing is filled between the packing chamber and the valve rod, a wedge-shaped ring surface is fixedly connected to the bottom of the packing chamber, a sealing inverted wedge surface is fixedly arranged on the side wall of the valve rod, the wedge-shaped ring surface is matched with the sealing inverted wedge, the upright posts are fixedly connected through a support, and the valve rod penetrates through the support and is in sliding connection with the support.

Preferably, the top of the valve clack is fixedly connected with a locking block, and the locking block penetrates through the valve rod and is fixedly connected with the valve rod through a pin rod, so that the connection is stable.

Preferably, a self-sealing filler is fixedly arranged between the valve rod channel and the filler chamber, and a quarter ring and a grading ring are fixedly arranged between the pressing plate and the filler chamber.

Preferably, a bearing is fixedly installed between the valve rod and the support, and the support is fixedly connected with the upright column through bolts.

Preferably, the packing chamber and the wedge-shaped ring surface are welded, the wedge-shaped ring surface is an F-11-04 nickel-based hard alloy sealing surface, the sealing performance is good, and one end face of the universal top block is an arc-shaped surface.

Preferably, the packing gland, the pressing plate and the packing chamber are fixedly connected through screws, and the packing chamber is in a step shape and is convenient to detach and replace.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a threaded connection of outside carousel and valve rod or other external component drive the valve rod and rise to drive the valve clack and shift up, thereby open the valve, make the inside intercommunication of valve body, when the valve clack moved top extreme position, the valve was opened completely, and the sealed face of falling wedge of valve rod lateral wall and the wedge anchor ring contact of packing chamber bottom and the line contact's of falling seal this moment guarantees the stability of valve rod condiment, makes it can not leak in the valve body. There is gland packing at packing chamber top through the screw connection, valve rod packing destroys, can open gland direct change valve rod packing through unscrewing the screw, when making valve rod packing leak outward, also can change valve rod packing through falling sealed and do not make the medium in the valve body leak outward, the forging processing that packing chamber base metal chooseed for use, can play good resistant medium and erode, the effect of corruption, compare current valve, bottom through the packing chamber is fallen sealed, prevent that the medium from valve rod packing department to spill, valve rod packing has been protected, even valve rod packing leaks, can be through the form of falling sealed of packing chamber, directly change valve rod packing and can not make the medium in the valve body spill, external environment safety has been protected in nuclear power operation, the setting up of universal kicking block has guaranteed the sealed between valve clack and the disk seat.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the depression structure of the present invention;

FIG. 2 is a schematic sectional view of the partition board of the present invention;

fig. 3 is a schematic view of the structure of the universal top block of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-valve body, 2-valve seat, 3-valve clack, 4-universal top block, 5-valve rod, 6-packing chamber, 7-pressing plate, 8-packing gland, 9-valve rod packing, 10-wedge ring surface, 11-sealing inverted wedge surface, 12-upright column, 13-support, 14-locking block, 15-self-sealing packing, 16-quarter ring and 17-equalizing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a nuclear power full-forging inverted-sealing packing chamber wedge gate valve comprises a valve body 1, a valve seat 2 is fixedly connected inside the valve body 1, a group of valve clacks 3 are arranged in a communication channel of the valve body 1, a universal top block 4 is fixedly installed in the middles of the valve clacks 3, a valve rod 5 is fixedly connected to the tops of the valve clacks 3, a valve rod 5 channel is fixedly connected to the top of the valve body 1, a packing chamber 6 is fixedly installed in the valve rod 5 channel, a pressing plate 7 is fixedly connected to the top of the packing chamber 6, a packing gland 8 is fixedly connected to the top of the valve rod 5 channel, the packing gland 8 is fixedly connected with the packing chamber 6 through screws, the valve rod 5 sequentially penetrates through the packing chamber 6 and the packing gland 8, valve rod packing 9 is filled between the packing chamber 6 and the valve rod 5, a wedge-shaped annular surface 10 is fixedly connected to the bottom of the packing chamber 6, a, the upright posts 12 are fixedly connected with each other through a bracket 13, and the valve rod 5 penetrates through the bracket 13 and is connected with the bracket in a sliding mode.

Wherein, valve clack 3 top fixedly connected with locking piece 14, locking piece 14 runs through valve rod 5 and valve rod 5 fixed connection through the pin pole. A self-sealing packing 15 is fixedly arranged between the channel of the valve rod 5 and the packing chamber 6, and a quarter ring 16 and a grading ring 17 are fixedly arranged between the pressing plate 7 and the packing chamber 6. And a bearing is fixedly arranged between the valve rod 5 and the support 13, and the support 13 is fixedly connected with the upright post 12 through a bolt. The packing chamber 6 is welded with the wedge-shaped ring surface 10, and the wedge-shaped ring surface 10 is a nickel-based hard alloy sealing surface of F11-04. The packing gland 8, the pressure plate 7 and the packing chamber 6 are fixedly connected through screws, and the packing chamber 6 is in a step shape.

One specific application of this embodiment is: the utility model discloses a threaded connection of outside carousel and valve rod 5 or other external component drive valve rod 5 and rise to drive valve clack 3 and move up, thereby open the valve, make 1 inside intercommunication of valve body, when valve clack 3 moved top extreme position, the valve was opened completely, the sealed face of falling wedge 11 of valve rod 5 lateral wall and the wedge anchor ring 10 contact of packing chamber 6 bottom and form the line contact's of falling seal this moment, guarantee valve rod condiment 9's stability, make it can not leak in the valve body 1. 6 tops of packing chamber have gland 8 through the screw connection, valve rod packing 9 destroys, can open gland 8 and directly change valve rod packing 9 through unscrewing the screw, make valve rod packing 9 leak outward when, also can change valve rod packing 9 and do not make the medium in the valve body 1 leak outward through falling sealed, the forging processing of 316 is chooseed for use to 6 parent metals in packing chamber, can play good resistant medium and erode, the effect of corruption, compare current valve, the bottom through packing chamber 6 is fallen sealed, prevent that the medium from leaking from 5 packings of valve rod, valve rod packing 9 has been protected, even valve rod packing 9 leaks, can be through the form of falling sealed of packing chamber 6, direct valve rod packing 9 can not make the medium spill in the valve body 1, external environment safety has been protected in nuclear power operation.

Under the action of the pressure load of the valve rod 5 and the arc-shaped surface of the universal top block 4, the medium in the pipeline generates certain pressure to the valve clack 3, so that different contact points and contact angles exist between the valve clack 3 and the universal top block 4, the universal top block 4 can compensate the deformation of the valve seat 2, the valve clack 3 is attached and extruded with the sealing surface of the valve seat 2, the sealing purpose is achieved, the universal top block 4 after nitriding treatment is adopted for surface nitriding treatment, the hardness of the universal top block is greatly improved, and the service life of the universal top block is prolonged.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a nuclear power is forged entirely and is fallen sealing packing chamber wedge gate valve, includes valve body (1), its characterized in that: the valve body (1) is fixedly connected with a valve seat (2) inside, a set of valve clacks (3) are arranged in a communication channel of the valve body (1), a universal jacking block (4) is installed in the middle of the valve clacks (3), valve rods (5) are fixedly connected to the tops of the valve clacks (3), a valve rod (5) channel is fixedly connected to the top of the valve body (1), a packing chamber (6) is fixedly installed in the valve rod (5) channel, a pressing plate (7) is fixedly connected to the tops of the packing chamber (6), a packing gland (8) is fixedly connected to the tops of the valve rod (5) channels, the packing gland (8) is fixedly connected to the packing chamber (6) through screws, the valve rods (5) sequentially penetrate through the packing chamber (6) and the packing gland (8), valve rod packing (9) is filled between the packing chamber (6) and the valve rods (5), and a wedge-, valve rod (5) lateral wall is fixed to be seted up sealed obdurance (11), wedge anchor ring face (10) and sealed obdurance (11) cooperation, valve rod (5) passageway top fixedly connected with a plurality of stands (12), support (13) fixed connection between stand (12), support (13) and sliding connection with it are passed in valve rod (5).

2. The nuclear power full-forging inverted-sealing packing chamber wedge-type gate valve according to claim 1, characterized in that: valve clack (3) top fixedly connected with locking piece (14), locking piece (14) run through valve rod (5) and valve rod (5) fixed connection through the pin rod.

3. The nuclear power full-forging inverted-sealing packing chamber wedge-type gate valve according to claim 1, characterized in that: and a self-sealing filler (15) is fixedly arranged between the channel of the valve rod (5) and the filler chamber (6), and a quarter ring (16) and a grading ring (17) are fixedly arranged between the pressing plate (7) and the filler chamber (6).

4. The nuclear power full-forging inverted-sealing packing chamber wedge-type gate valve according to claim 1, characterized in that: a bearing is fixedly installed between the valve rod (5) and the support (13), and the support (13) is fixedly connected with the upright post (12) through a bolt.

5. The nuclear power full-forging inverted-sealing packing chamber wedge-type gate valve according to claim 1, characterized in that: the packing chamber (6) is welded with the wedge-shaped ring surface (10), the wedge-shaped ring surface (10) is a nickel-based hard alloy sealing surface of F11-04, and one end face of the universal top block (4) is an arc-shaped surface.

6. The nuclear power full-forging inverted-sealing packing chamber wedge-type gate valve according to claim 1, characterized in that: the packing gland (8), the pressing plate (7) and the packing chamber (6) are fixedly connected through screws, and the packing chamber (6) is in a step shape.