CN114483970A

CN114483970A - Novel stop valve

Info

Publication number: CN114483970A
Application number: CN202210270751.XA
Authority: CN
Inventors: 万胜军; 高德明; 赵宇
Original assignee: Harbin Power Plant Valve Co ltd
Current assignee: Harbin Power Plant Valve Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-05-13
Also published as: CN113154052A

Abstract

A novel stop valve belongs to the field of stop valves for thermal generator sets. The invention solves the problems of inconvenient disassembly and assembly and high cost of the existing stop valve for the thermal power and nuclear power generating unit. The valve comprises a valve body, a valve seat, a valve clack, a support, a valve rod and a valve rod nut, wherein the valve seat is arranged in the valve body, the valve clack is installed in an inner cavity of the valve body, the valve clack is connected with the valve rod, the valve clack is arranged on the valve seat, the valve body is connected with the support, a first arc-shaped boss is arranged on the side wall of the upper portion of the valve body, a first positioning table is arranged on the side wall of the valve body and located below the first arc-shaped boss, an arc-shaped clamping sleeve matched with the first arc-shaped boss is arranged on the inner wall of the lower portion of the support, the first arc-shaped boss is installed in the arc-shaped clamping sleeve, a second positioning table is installed on the bottom end face of the support, and the first positioning table and the second positioning table are overlapped front and back and fixed through a first screw. The novel stop valve is convenient to disassemble and assemble, the service life of the stop valve is effectively prolonged, and the interchangeability of the electric stop valve and the manual stop valve is improved.

Description

Novel stop valve

The application is a divisional application of an invention patent with a parent name of 'a novel stop valve'; the application number of the parent application is as follows: CN 202110340128.2; the application date of the parent application is as follows: 2021.03.30.

Technical Field

The invention relates to a novel stop valve, and belongs to the field of stop valves for thermal generator sets.

Background

The thermal generator set is a set which takes coal, oil or combustible gas as fuel, heats water in a boiler to increase the temperature, and then uses steam with certain pressure and temperature to drive a steam turbine to drive a generator to generate electricity.

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When a medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, and the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod bending can occur;

the stop valve for the thermal power and nuclear power generating unit has the following defects:

1. the valve body and the support of the existing stop valve for the thermal power and nuclear power generating units are generally in threaded connection, in order to ensure complete sealing in the valve body, the support needs to be completely pressed on the valve body when the valve body and the support are installed, the support is very inconvenient to install when the support is installed on the valve body through threads, and if excessive force is applied during installation, a sliding wire is easily generated, so that valve parts are damaged or scrapped, the overall working efficiency of the thermal power and nuclear power generating units is influenced, and unnecessary dangers are easily generated;

2. the stop valve for the thermal power and nuclear power generating units is connected by threads, when the stop valve is used for a long time, the threads are extremely easy to rust, if parts in the valve body need to be overhauled or replaced, the support cannot be detached from the valve body, so that the valve is directly scrapped, and resource waste is caused;

3. the electric valve and the manual valve of the stop valve for the existing thermal power and nuclear power generating units are not universal in parts, the manufacturing cost of the valve is high, and the purchasing cost of users is indirectly improved.

In view of the above, a need exists for a stop valve that is easy to disassemble and assemble and is commonly used for both electric valves and manual valves to solve the above problems.

Disclosure of Invention

The invention aims to provide a novel stop valve to solve the problems of inconvenience in disassembly and assembly and high cost of the existing stop valve for thermal power and nuclear power units. The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel stop valve comprises a valve body, a valve seat, a valve clack, a support and a valve rod, wherein the valve seat is arranged in the valve body, the valve clack is installed in an inner cavity of the valve body and is connected with the valve rod, the valve clack is arranged on the valve seat, and the valve body is connected with the support; a first arc-shaped boss is arranged on the side wall of the upper part of the valve body, and a first positioning table is also arranged on the side wall of the valve body; an arc-shaped clamping sleeve matched with the first arc-shaped boss is arranged on the inner wall of the lower portion of the support, when the support is installed on the valve body, the first arc-shaped boss of the valve body is embedded into the arc-shaped clamping sleeve of the support, and when the support and the valve body are disassembled, the support rotates relative to the valve body, so that the arc-shaped clamping sleeve of the support is taken out of the first arc-shaped boss of the valve body; the bottom end face of the support is provided with a second positioning table, and the first positioning table and the second positioning table are overlapped front and back and can be fixed.

Furthermore, a pair of first arc-shaped bosses are symmetrically arranged on the left side and the right side of the side wall of the upper portion of the valve body.

Furthermore, a first through hole is processed on the first positioning table, a second through hole is processed on the second positioning table, the valve body and the support are fixed through a first screw penetrating through the first through hole and the second through hole, and a nut is installed at the tail end of the first screw and used for fastening the first positioning table and the second positioning table.

Furthermore, the electric device also comprises a flange plate and an electric device, wherein the flange plate is connected with the support, and the electric device is connected with the support through the flange plate.

Furthermore, a pair of second arc-shaped bosses are symmetrically arranged on the side wall of the upper portion of the support in the left-right direction, two buckles matched with the second arc-shaped bosses are symmetrically arranged on the flange plate, and the second arc-shaped bosses are installed in a matched mode with the buckles.

Furthermore, the central angle of the second arc-shaped boss is gamma, the gamma is 80-85 degrees, the central angle of the buckle is delta, and the delta is 80-85 degrees.

Furthermore, a third through hole is formed in the flange plate, and a second screw penetrates through the third through hole of the flange plate to fix the electric device on the support.

Further, still include hand wheel and valve-stem nut, valve-stem nut with the top of valve rod is connected, hand wheel fixed mounting be in valve-stem nut is last, through the rotation hand wheel control the valve rod drives the valve clack is opened or is closed.

Further, the central angle of the first arc-shaped boss is alpha, the alpha is 80-85 degrees, the central angle of the arc-shaped clamping sleeve is beta, and the beta is 80-85 degrees.

Further, the first positioning table is located below the first arc-shaped boss.

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

1. according to the novel stop valve, the valve body and the support are connected through the arc-shaped clamping sleeve, the first positioning table and the second positioning table are respectively arranged on the valve body and the support, the support is positioned through the first positioning table and the second positioning table, and the support is installed on the valve body through the matching connection of the arc-shaped clamping sleeve on the support and the first arc-shaped boss of the valve body, so that the problem that parts are damaged due to too large or too small force during installation can be solved;

2. the situation that threads are rusted cannot be generated between the valve body and the support of the novel stop valve, the service life of the stop valve for the thermal power and nuclear power generating units is effectively prolonged, the stop valve is convenient to disassemble and assemble, and when parts in the valve body need to be overhauled or replaced, the stop valve is quite easy to disassemble, the maintenance time is saved, and the working efficiency of the thermal power and nuclear power generating units is indirectly improved;

3. according to the novel stop valve, the second arc-shaped boss on the support is connected with the flange plate in a buckling mode, the valve rod nut is connected with the electric device through the flange plate and the support, or the valve rod nut is directly connected with the hand wheel, so that interchangeability of the manual stop valve and the electric stop valve is improved, parts of the electric stop valve and parts of the manual stop valve can be used mutually, manufacturing cost of the valve is reduced, and purchasing cost of users is also reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described 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 to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a novel stop valve (electric);

FIG. 2 is a schematic diagram of the overall structure of a novel stop valve (manual);

FIG. 3 is a schematic structural view of a valve body;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic structural view of a stent;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 8 is a schematic view of the flange construction;

fig. 9 is a sectional view taken along line C-C in fig. 8.

In the figure: 1-valve body, 2-valve seat, 3-valve flap, 4-first screw, 5-nut, 6-support, 7-valve rod, 8-valve rod nut, 9-second screw, 10-flange plate, 11-electric device, 12-hand wheel, 13-first arc boss, 14-first positioning table, 15-first through hole, 16-second arc boss, 17-second positioning table, 18-second through hole, 19-arc cutting sleeve, 20-buckle and 21-third through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a novel stop valve to solve the problems of inconvenience in disassembly and assembly and high cost of the existing stop valve for thermal power and nuclear power units.

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings

The first embodiment is as follows: the novel stop valve of the embodiment is described by combining fig. 1-7, and comprises a valve body 1, a valve seat 2, a valve flap 3, a support 6, a valve rod 7 and a valve rod nut 8, wherein the valve seat 2 is arranged in the valve body 1, the valve flap 3 is arranged in an inner cavity of the valve body 1, the valve flap 3 is connected with the valve rod 7, the valve flap 3 is arranged on the valve seat 2, the valve body 1 is connected with the support 6, a pair of first arc-shaped bosses 13 are symmetrically arranged on the left side and the right side of the side wall of the upper part of the valve body 1, a first positioning platform 14 is also arranged on the side wall of the valve body 1, the first positioning platform 14 is positioned below the first arc-shaped bosses 13, an arc-shaped cutting sleeve 19 matched with the first arc-shaped bosses 13 is arranged on the inner wall of the lower part of the support 6, the first arc-shaped bosses 13 are arranged in the arc-shaped cutting sleeve 19, a second positioning platform 17 is arranged on the bottom end surface of the support 6, the first positioning platform 14 and the second positioning platform 17 are overlapped back and forth and back and fixed through first screws 4, a first through hole 15 is processed on the first positioning table 14, a second through hole 18 is processed on the second positioning table 17, a first screw 4 passes through the first through hole 15 and the second through hole 18 to fix the valve body 1 and the support 6, a nut 5 is installed at the tail end of the first screw 4 for fastening the first positioning table 14 and the second positioning table 17, when the support 6 is installed on the valve body 1, the arc-shaped cutting sleeve 19 of the support 6 enters the upper end of the valve body 1 from the neutral position of the first arc-shaped boss 13 of the valve body 1, when the arc-shaped cutting sleeve 19 of the support 6 is inosculated with the first arc-shaped boss 13 of the valve body 1, the support 6 and the valve body 1 relatively rotate 90 degrees, so that the first arc-shaped boss 13 of the valve body 1 is embedded into the arc-shaped cutting sleeve 19 of the support 6, the distance of the arc-shaped cutting sleeve 19 is H, the height of the first arc-shaped boss 6 is H, H +0.5mm is not less than H +0.1mm, the second positioning table 17 of the support 6 is coincided with the first positioning table 14 of the valve body 1, after the coincidence, the first screw 4 is fixed with the support 6 and the valve body 1 through the first through hole 15 and the second through hole 18, the first positioning table 14 and the second positioning table 17 are pressed tightly through the nut 5, the installation of the support 6 and the valve body 1 is completed, when the support 6 and the valve body 1 are disassembled, the nut 5 and the first screw 4 are firstly disassembled, the support 6 and the valve body 1 rotate reversely by 90 degrees, and the arc-shaped clamping sleeve 19 of the support 6 is taken out from the neutral position of the first arc-shaped boss 13 of the valve body 1, so that the installation or the disassembly are very convenient and fast.

The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 8, and the novel stop valve of the embodiment further includes a flange 10 and an electric device 11, the flange 10 is connected with the bracket 6, and the electric device 11 is connected with the bracket 6 through the flange 10;

specifically, a pair of second arc-shaped bosses 16 are symmetrically arranged on the left and right of the side wall of the upper portion of the support 6, two buckles 20 matched with the second arc-shaped bosses 16 are symmetrically arranged on the flange plate 10, the second arc-shaped bosses 16 are installed in a matched mode with the buckles 20, the flange plate 10 enters the position below the second arc-shaped bosses 16 of the support 6 from the neutral position of the second arc-shaped bosses 16 of the support 6, the flange plate 10 and the support 6 rotate 90 degrees relatively, then the flange plate 10 is lifted upwards, the buckles 20 of the flange plate 10 are located below the second arc-shaped bosses 16 of the support 6 and are tightly attached to each other, 4 third through holes 21 are uniformly formed in the flange plate 10, and the second screws 9 penetrate through the third through holes 21 of the flange plate 10 to fix the electric device 11 on the support 6;

specifically, the central angle of the second arc-shaped boss 16 is γ, γ is 80 to 85 °, the central angle of the buckle 20 is δ, δ is 80 to 85 °, and the central angle of the neutral position of the second arc-shaped boss 16 is larger than the central angle of the buckle 20 under the condition that the buckle 20 has enough strength, so that the flange plate 10 can be conveniently disassembled and assembled.

The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 8, and the novel stop valve of the embodiment further includes a hand wheel 12, the hand wheel 12 is fixedly mounted on the stem nut 8, the hand wheel 12 is mounted in cooperation with the stem nut 8, and the valve stem 7 is controlled by rotating the hand wheel 12 to drive the valve flap 3 to open or close.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 8, and the novel stop valve of the present embodiment includes that a central angle of the first arc-shaped boss 13 is α, α is 80 ° to 85 °, a central angle of the arc-shaped ferrule 19 is β, β is 80 ° to 85 °, and under the condition that the arc-shaped ferrule 19 has sufficient strength, the central angle of the neutral position of the first arc-shaped boss 13 is greater than the central angle of the arc-shaped ferrule 19, so as to facilitate the mounting and dismounting of the bracket 6.

The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 to 8, and the bottom of the valve rod 7 is processed into a hook, and the valve rod 7 is connected with the valve flap 3 by the hook.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. A novel stop valve is characterized in that: the valve comprises a valve body (1), a valve seat (2), a valve clack (3), a support (6) and a valve rod (7), wherein the valve seat (2) is arranged in the valve body (1), the valve clack (3) is installed in an inner cavity of the valve body (1), the valve clack (3) is connected with the valve rod (7), the valve clack (3) is arranged on the valve seat (2), and the valve body (1) is connected with the support (6); a first arc-shaped boss (13) is arranged on the side wall of the upper part of the valve body (1), and a first positioning table (14) is also arranged on the side wall of the valve body (1); an arc-shaped clamping sleeve (19) matched with the first arc-shaped boss (13) is arranged on the inner wall of the lower portion of the support (6), when the support (6) is installed on the valve body (1), the first arc-shaped boss (13) of the valve body (1) is embedded into the arc-shaped clamping sleeve (19) of the support (6), and when the support (6) and the valve body (1) are disassembled, the support (6) rotates relative to the valve body (1), so that the arc-shaped clamping sleeve (19) of the support (6) is taken out of the first arc-shaped boss (13) of the valve body (1); install second location platform (17) on the bottom face of support (6), first location platform (14) with second location platform (17) front and back coincide and can be fixed.

2. The novel shut-off valve of claim 1, wherein: the left and right sides of the side wall of the upper part of the valve body (1) are symmetrically provided with a pair of first arc-shaped bosses (13).

3. The novel shut-off valve of claim 1, wherein: processing has first through-hole (15) on first locating platform (14), processing has second through-hole (18) on second locating platform (17), passes through first screw (4) first through-hole (15) with second through-hole (18) will valve body (1) with support (6) are fixed, and nut (5) are installed the tail end of first screw (4) is used for the fastening first locating platform (14) with second locating platform (17).

4. The novel shut-off valve of claim 1, wherein: the support is characterized by further comprising a flange plate (10) and an electric device (11), wherein the flange plate (10) is connected with the support (6), and the electric device (11) is connected with the support (6) through the flange plate (10).

5. The novel shut-off valve of claim 4, wherein: a pair of second arc-shaped bosses (16) are symmetrically arranged on the side wall of the upper portion of the support (6) in a bilateral mode, two buckles (20) matched with the second arc-shaped bosses (16) are symmetrically arranged on the flange plate (10), and the second arc-shaped bosses (16) are installed in a matched mode with the buckles (20).

6. The novel shut-off valve of claim 5, wherein: the central angle of the second arc-shaped boss (16) is gamma, the gamma is 80-85 degrees, the central angle of the buckle (20) is delta, and the delta is 80-85 degrees.

7. The novel shut-off valve of claim 5, wherein: and a third through hole (21) is formed in the flange plate (10), and the electric device (11) is fixed on the support (6) through a second screw (9) penetrating through the third through hole (21) of the flange plate (10).

8. The novel shut-off valve of claim 1, wherein: still include hand wheel (12) and valve-stem nut (8), valve-stem nut (8) with the top of valve rod (7) is connected, hand wheel (12) fixed mounting be in on the valve-stem nut (8), through rotatory hand wheel (12) control valve rod (7) drive valve clack (3) are opened or are closed.

9. The new shut-off valve as claimed in claim 1 or 6, wherein: the central angle of the first arc-shaped boss (13) is alpha, the alpha is 80-85 degrees, the central angle of the arc-shaped clamping sleeve (19) is beta, and the beta is 80-85 degrees.

10. The novel shut-off valve of claim 1, wherein: the first positioning table (14) is positioned below the first arc-shaped boss (13).