CN115839423A

CN115839423A - Steel pipe welding ball valve that floats for heating power

Info

Publication number: CN115839423A
Application number: CN202310051596.7A
Authority: CN
Inventors: 夏福民; 辜宝宏; 孔令涛; 夏之琨; 孙占江; 曹二帅; 范志河
Original assignee: Zhonghong Valve Co ltd
Current assignee: Zhonghong Valve Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-03-24
Anticipated expiration: 2043-02-02
Also published as: CN115839423B

Abstract

The invention relates to the technical field of ball valves, in particular to a steel pipe welded floating ball valve for heating power. The utility model provides a heating power is with steel pipe welding ball valve that floats, includes valve body, casing and spheroid etc. and casing fixed mounting is equipped with the spheroid in the casing on the valve body, all opens circular through-hole on casing and the spheroid, and the spheroid casing relatively rotates, and valve rod fixed connection is on the spheroid, and the connecting pipe has all been welded to the valve body both sides, and the one end that the connecting pipe stretched into the valve body is installed the fender bracket, installs the disk seat between casing and the fender bracket. According to the invention, by adopting the structural design of the double sealing rings, the two groups of sealing rings are fixed in the stepped valve seat, so that the upper limit of the bearing pressure of the sealing rings is effectively enhanced, the loss rate of the sealing rings is reduced, the service life of the floating ball valve in normal operation can be effectively prolonged, and the problem that the assembly needs to be frequently replaced and maintained is avoided.

Description

Steel pipe welding ball valve that floats for heating power

Technical Field

The invention relates to the technical field of ball valves, in particular to a steel pipe welded floating ball valve for heating power.

Background

The heat pipeline is also called as a heat pipeline network, the heat pipeline is a heat supply pipeline which is conveyed from a heat supply center to a building, has various performances of strong corrosion resistance, leakage prevention, heat prevention and the like, and has changeable consequences when the pipeline leaks.

The valve is an indispensable accessory in the thermal pipeline, the existing thermal pipeline mostly uses a floating ball valve to control the cut-off and the connection of the two-phase coexisting medium of hot water and steam, and the ball valve has the main characteristics of compact structure, reliable sealing, simple structure and convenient maintenance, a sealing surface and a spherical surface are always in a closed state, are not easily eroded by the medium, are easy to operate and maintain, and are suitable for common working media such as water, solvent, acid, natural gas and the like.

The ball valve floats at the working process because the spheroid of ball valve is unsteady, under the medium pressure effect, the spheroid can produce certain displacement and sticiss on the sealed face of exit end, guarantee that the exit end is sealed, but the spheroid bears the whole export sealing washer that have passed to of load of working medium, the sealing washer loss is comparatively serious, when receiving higher pressure and assaulting, can cause the sealing washer to damage, and then lead to closing not tight emergence and leak for the life of ball valve is limited, need frequently to change the subassembly and maintain. In order to solve the above problems, it is necessary to design a floating ball valve for thermal steel pipe welding with a double-sealing ring structure.

Disclosure of Invention

The invention provides a steel pipe welding floating ball valve for heating power with a double-sealing ring structure, aiming at overcoming the defects that when the existing floating ball valve works, a sealing ring is under high pressure impact for a long time, the loss rate is too high, the service life of the ball valve is further limited, and components need to be frequently replaced for maintenance.

The technical scheme is as follows: the utility model provides a heating power is with steel pipe welding ball valve that floats, includes valve body, casing, spheroid, valve rod, fender bracket, disk seat and connecting pipe, and casing fixed mounting is equipped with the spheroid on the valve body in the casing, all opens circular through-hole on casing and the spheroid, and the spheroid casing relatively rotates, and valve rod fixed connection has all welded the connecting pipe on the spheroid, and the one end that the connecting pipe stretched into the valve body is installed the fender bracket, installs the disk seat between casing and the fender bracket, still including first sealing washer and second sealing washer, the disk seat is the echelonment, and the nearly spheroid end of disk seat is protruding along circumference, installs first sealing washer and second sealing washer on the disk seat.

As the improvement of above-mentioned scheme, the valve rod is including pole portion, fixed part and handle portion, and the pole portion adopts the flat head structure in order to avoid the dislocation, and fixed part fixed mounting is equipped with bellied anti-skidding structure on the valve body, handle portion end.

As the improvement of the proposal, the side surface of the shell is provided with a through hole, and the screw cap is detachably arranged at the through hole on the side surface of the shell.

As an improvement of the scheme, the ball body fixing device further comprises a guide block, a fixing rod, an annular frame and an elastic piece, wherein the guide block extending inwards is arranged in the ball body channel, the fixing rod is arranged on the guide block in a sliding mode, the end of the fixing rod is connected with the annular frame, and the elastic piece is connected between the guide block and the annular frame.

As a modification of the scheme, the outer side of the annular frame is provided with a chamfer, and the angle of the chamfer is between 37 degrees and 53 degrees.

As an improvement of the scheme, a spring washer is arranged between the protection frame and the connecting pipe.

1. According to the invention, by adopting the structural design of the double sealing rings, two groups of sealing rings are fixed in the stepped valve seat, so that the upper limit of the bearing pressure of the sealing rings is effectively enhanced, the loss rate of the sealing rings is reduced, the service life of the floating ball valve in normal operation can be effectively prolonged, and the problem of frequent replacement and maintenance of components is avoided;

2. the side surface of the shell is provided with the detachably mounted rotary cover, so that the inner side of the spherical channel can be quickly cleaned when the valve is closed, and impurities in a medium are prevented from being accumulated in the sphere to influence medium transmission;

3. the invention realizes the covering protection of the protective frame and the shell connecting surface by the matching of the parts such as the guide block, the fixed rod, the annular frame and the like, and the annular frame can scrape impurities on the protective frame when rotating along with the ball body, thereby effectively ensuring the smooth transmission of the medium in the channel.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic perspective view of the present invention at a.

Fig. 4 is a schematic perspective view of the valve stem of the present invention.

Fig. 5 is a schematic perspective view of the housing and the screw cap according to the present invention.

Fig. 6 is a perspective view illustrating a guide block, a fixing bar and a ring frame according to the present invention.

FIG. 7 is an enlarged view of a portion of the annular frame of the present invention.

Number designation in the figures: 1. the valve comprises a valve body, a housing, a valve body, a shell, a valve body, a ball body, a valve rod 41, a rod part, a fixing part 42, a handle part 43, a protective frame 6, a valve seat 7, a connecting pipe 8, a first sealing ring 9, a second sealing ring 10, a screw cap 11, a guide block 12, a fixing rod 13, an annular frame 14, an elastic part 15 and a spring washer.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally conditions used in routine experiments.

Example 1

The utility model provides a floating ball valve of steel pipe welding for heating power, as shown in fig. 1-4, including valve body 1, casing 2, spheroid 3, valve rod 4, fender bracket 5, disk seat 6 and connecting pipe 7, spherical casing 2 welds on valve body 1, movable mounting has spheroid 3 in the casing 2, the circular through-hole has all been opened on casing 2 and the spheroid 3, and spheroid 3 can rotate relative to casing 2, the welding of valve body 1 bottom has the spacing seat that restricts spheroid 3 gliding downwards, bayonet fixed connection is on spheroid 3 top for valve rod 4, connecting pipe 7 has all been welded to casing 1 both sides, casing 2 passageway, the pipe diameter of spheroid 3 passageway and connecting pipe 7 equals and can communicate into a diameter, connecting pipe 7 stretches into the one end of valve body 1 and welds fender bracket 5, fender bracket 5 and casing 2 rigid coupling, install disk seat 6 between casing 2 and fender bracket 5, disk seat 6 chooses polytetrafluoroethylene, counterpoint polystyrene polymer material such as counterpoint is made for valve seat 6, still include first sealing washer 8, second sealing washer 9 and spring washer 15, disk seat 6 is the echelonment, disk seat 6 is protruding along the edge of spheroid 3, install first sealing washer 8 and second sealing washer 15 on the second sealing washer for the valve seat, the optional spring washer 15, the gasket washer 15 is used for realizing that the gasket washer for the MN spring washer 15, the valve seat 6 material is installed, the optional spring washer 15, the material.

When a floating ball valve is used for controlling the cut-off and the connection of a hot water and steam two-phase coexisting medium, the valve body 1, the shell 2 and the connecting pipe 7 are formed by welding steel pipes serving as main materials, the sealed connection among the valve body 1, the shell 2 and the connecting pipe 7 is ensured, the valve rod 4 drives the ball body 3 to rotate for 90 degrees around the center of the valve rod 4, the channel of the ball body 3, the channel of the shell 2 and the diameter of the connecting pipe 7 are communicated, the medium can flow through the channel without loss, the valve can be closed to cut off the pipeline medium by rotating for 90 degrees, at the moment, the ball body 3 generates certain displacement under the action of the pressure of the medium and is tightly pressed on a sealing surface at the outlet end of the shell 2 to ensure the sealing at the outlet end, the valve seat 6 made of an elastic material is tightly pressed on the protective frame 5, the first sealing ring 8 and the second sealing ring 9 are simultaneously stressed, the contact area of the sealing rings and the valve seat 6 is increased, so that the first sealing ring 8 and the second sealing ring 9 can bear larger medium thrust without being damaged, and the valve seat 6 and the valve body 1 and the connecting pipe 7 are connected in a sealed manner.

Example 2

On the basis of embodiment 1, as shown in fig. 4, the valve rod 4 includes a rod portion 41, a fixing portion 42, and a handle portion 43, the rod portion 41 adopts a flat head structure to avoid dislocation, the rod portion 41 is installed vertically upward, the fixing portion 42 is fixedly installed at the top end of the valve body 1 through a bolt, two sides of the tail end of the handle portion 43 are both provided with a raised anti-slip structure, and the handle portion 43 rotates to drive the rod portion 41 to rotate to drive the sphere 3 to rotate.

As shown in fig. 5, a circular through hole is formed in the side of the housing 2, the screw cap 10 is detachably mounted in the through hole in the side of the housing 2 by means of screw-fitting, and the inner passage is aligned with the screw cap 10 when the ball 3 is rotated to the closed state.

When the ball valve is opened and closed by rotating the valve rod 4, the rod part 41 of the structure of the flat head makes the connection with the handle part 43 not misplaced, thereby ensuring that the switch state indicated by the handle part 43 is consistent with the valve, the anti-skid structure of the handle part 43 can effectively avoid the misoperation caused by the hand sliding, and simultaneously, when the ball valve is in the closed state, the screw cap 10 on the side surface of the shell 2 can be loosened and taken down, the circular through hole in the sphere 3 is aligned with the through hole on the side surface of the shell 2, the internal channel of the sphere 3 can be conveniently cleaned, the accumulation of impurities in the medium inside the sphere 3 is avoided, and the medium transmission is influenced.

As shown in fig. 6 and 7, the ball-shaped fixing device further comprises a guide block 11, a fixing rod 12, an annular frame 13 and an elastic part 14, the guide block 11 extending inwards is welded in a channel of the ball 3, the guide block 11 is four in number and is arranged in an up-down symmetrical manner, the fixing rod 12 is arranged on the guide block 11 in a sliding manner, the fixing rod 12 can horizontally move along the guide block 11, the annular frame 13 is welded at the tail end of the outer side of the fixing rod 12, an annular protruding part is arranged on the outer side of the annular frame 13, the elastic part 14 is connected between the guide block 11 and the annular frame 13, the elastic part 14 is a stainless steel compression spring or a rubber elastic sleeve, a chamfer is formed in the outer side of the annular frame 13, and the angle of the chamfer is 45 °.

When the ball valve is in an opening state, the annular frame 13 slides outwards along the channel relative to the ball body 3 under the reset action of the elastic piece 14, the fixing rod 12 is driven to move outwards along the guide block 11, the elastic piece 14 is stretched, the annular frame 13 covers the connecting surface between the shell 2 and the protection frame 5, impurities are prevented from flowing into a gap, when the rotating valve rod 4 drives the ball body 3 to rotate, the annular frame 13 is pressed inwards along the chamfer inclined surface along with rotation, the elastic piece 14 is compressed under stress, and the annular frame 13 can scrape the impurities on the protection frame 5 in the rotating process.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A steel pipe welding floating ball valve for heating power comprises a valve body (1), a shell (2), a ball body (3), a valve rod (4), a protective frame (5), a valve seat (6) and a connecting pipe (7), wherein the shell (2) is fixedly installed on the valve body (1), the ball body (3) is arranged in the shell (2), circular through holes are formed in the shell (2) and the ball body (3), the ball body (3) can rotate relative to the shell (2), the valve rod (4) is fixedly connected to the ball body (3), the connecting pipe (7) is welded on each of two sides of the valve body (1), the protective frame (5) is installed at one end, extending into the valve body (1), of the connecting pipe (7), and the valve seat (6) is installed between the shell (2) and the protective frame (5);

the ball valve is characterized by further comprising a first sealing ring (8) and a second sealing ring (9), the valve seat (6) is in a step shape, the end, close to the ball body (3), of the valve seat (6) protrudes along the circumferential direction, and the first sealing ring (8) and the second sealing ring (9) are installed on the valve seat (6).

2. The floating ball valve for welding steel pipes for heating power of claim 1, wherein the valve rod (4) comprises a rod part (41), a fixing part (42) and a handle part (43), the rod part (41) adopts a flat head structure to avoid dislocation, the fixing part (42) is fixedly installed on the valve body (1), and the tail end of the handle part (43) is provided with a raised anti-slip structure.

3. A floating ball valve welded with steel pipes for heating power as claimed in claim 1, wherein the side of the housing (2) is provided with a through hole, and the screw cap (10) is detachably mounted at the through hole on the side of the housing (2).

4. The floating ball valve for welding steel pipes for heating power of claim 1, further comprising a guide block (11), a fixing rod (12), an annular frame (13) and an elastic member (14), wherein the guide block (11) extending inwards is fixedly connected in the channel of the ball body (3), the fixing rod (12) is slidably arranged on the guide block (11), the annular frame (13) is connected to the end of the fixing rod (12), and the elastic member (14) is connected between the guide block (11) and the annular frame (13).

5. A floating ball valve for welding steel pipes for heating power as claimed in claim 4, wherein the outside of the annular frame (13) is chamfered, and the angle of the chamfer is between 37 ° and 53 °.

6. A floating ball valve for thermal steel tube welding according to claim 1, characterized in that a spring washer (15) is installed between the protective frame (5) and the connecting tube (7).