CN220523334U

CN220523334U - All-welded eccentric half ball valve for heat supply

Info

Publication number: CN220523334U
Application number: CN202321947921.XU
Authority: CN
Inventors: 郭力星; 徐国涛
Original assignee: Beijing Beigao Valve Group Co ltd
Current assignee: Beijing Beigao Valve Group Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-02-23
Anticipated expiration: 2033-07-24

Abstract

The utility model provides an all-welded eccentric half ball valve for heat supply, which relates to the technical field of welded ball valves and comprises a rolled valve body, wherein an upper sleeve assembly is welded above the axial eccentric position of the valve body, a lower sleeve is welded below the axial eccentric position of the valve body, an upper valve rod is arranged in the upper sleeve assembly, a lower valve rod is arranged in the lower sleeve, hemispheres are directly arranged on the upper valve rod and the lower valve rod, side pipes are respectively welded at two ends of the valve body, and a valve body assembly is arranged between the hemispheres and the side pipes. Through integral all welded structure, solved ordinary valve bolt, gasket connection, the expend with heat and contract with cold causes the bolt to become flexible and the ageing external problem of leaking that takes place of gasket, reduced manufacturing cost.

Description

All-welded eccentric half ball valve for heat supply

Technical Field

The utility model belongs to the technical field of welded ball valves, and particularly relates to an all-welded eccentric semi-ball valve for heat supply.

Background

The valve body of the eccentric half ball valve product in China is cast and formed, the maximum caliber is DN2000, a large amount of equipment and personnel can be input into the valve body for casting the product, particularly, the valve body of the eccentric half ball valve with large caliber can occupy large funds, and meanwhile, the valve body mold with each caliber and pressure has higher requirements on cast equipment and technology, but the inherent defects of casting cannot be avoided, and the cost of each valve body is higher because the dosage of the eccentric half ball valve with large caliber is relatively less. Casting each large-caliber valve body consumes too much manpower and material resources, and causes environmental pollution and energy waste. And the eccentric hemisphere valve of cast molding is generally flange connection structure, if for welded connection, must change split type structure again, and the structure is more complicated, and various costs are improved correspondingly.

Such as various types of eccentric half ball valves in the standard GB/T26146 eccentric half ball valve. The eccentric semi-ball valve mainly comprises a valve body, a semi-sphere, a valve seat, a valve rod and the like. The cast eccentric hemispherical valve is generally of a flange connection structure, if the cast eccentric hemispherical valve is applied to heat supply engineering for welding connection, the cast eccentric hemispherical valve must be changed into a split structure, as shown in a typical structure schematic diagram of a welding end of a side-mounted split type hemispherical valve in the standard of GB/T26146 eccentric hemispherical valve (as shown in figure 1), an auxiliary valve body is required to be added, the structure is more complex, and various costs of materials, processing and the like are correspondingly increased. The main valve body and the auxiliary valve body are connected through bolts, so that the valve is not suitable for heat supply engineering, the valve in the heat supply engineering is generally installed in an underground valve well, the environment is moist, heat preservation treatment is needed to be carried out on the valve, at the moment, the bolts on the valve body are not beneficial to heat preservation treatment, the bolts are easy to rust and pollute the environment, and after the valve is used for a plurality of years, the joint of the main valve body and the auxiliary valve body is easy to leak.

Based on the above, an eccentric half ball valve for heat supply with low cost and no need of bolt connection is needed to be proposed, and the problems are solved.

Disclosure of Invention

The utility model aims to provide an all-welded eccentric half ball valve for heat supply, which solves the problems that a large-caliber valve body formed by casting is high in cost, a split type structure is complex, and bolt connection is easy to leak.

The utility model provides an all-welded eccentric half ball valve for heat supply, which comprises a rolled valve body, wherein an upper sleeve assembly is welded above the axial eccentric position of the valve body, a lower sleeve is welded below the axial eccentric position of the valve body, an upper valve rod is arranged in the upper sleeve assembly, a lower valve rod is arranged in the lower sleeve, hemispheres are directly arranged on the upper valve rod and the lower valve rod, side pipes are respectively welded at two ends of the valve body, and a valve body assembly is arranged between the hemispheres and the side pipes.

As a possible implementation manner, the valve body is rolled by integrally forging or pressing a steel pipe or a steel plate.

As a possible implementation manner, the valve seat retainer ring is welded at the top of the side pipe, and the valve seat assembly is limited on the processing matching end surface of the valve seat retainer ring and the inner wall of the side pipe.

As a possible implementation mode, a base is arranged on a processing matching end face on the inner wall of the side pipe, a valve seat adjusting pad for adjusting the position of the valve seat assembly is arranged on the base, the valve seat assembly is arranged on the valve seat adjusting pad, and the valve seat assembly is in contact with the hemispherical body to realize sealing.

As a possible implementation manner, the base is provided with an adjusting mechanism for adjusting the front and rear positions of the valve seat adjusting pad, and the preferred adjusting mechanism adopts an inner hexagon screw.

As a possible implementation manner, the upper sleeve assembly is provided with a packing sealing box, the packing sealing box is provided with a packing pressing plate, and the lower end of the lower sleeve is provided with a bottom cover.

As one possible implementation, a hard seal structure is adopted between the valve seat assembly and the valve body.

The utility model has the beneficial effects that:

1. the integral all-welded structure solves the problems of external leakage caused by bolt loosening and gasket aging due to heat expansion and cold contraction of common valve bolts and gaskets;

2. the spring and the adjusting screw are arranged at the rear part of the valve seat, so that the adaptability to the change of pressure and temperature is extremely strong, the valve seat is ensured to hold the ball body all the time, and no leakage is generated in the standard pressure and temperature range;

3. the valve body and the pipeline are made of the same material, so that uneven stress and deformation caused by the fact that a vehicle passes through the ground are avoided, and the service life of the valve body and the pipeline is the same;

4. the welding device can be directly welded on a pipeline without matching flanges, bolts and gaskets, so that the labor cost of installation and the auxiliary material cost are saved, the service life is longer, and the maintenance cost of regular maintenance, replacement and the like is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a structure of an all-welded eccentric half ball valve for heat supply;

FIG. 2 is a schematic view of the valve seat assembly of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the assembled valve body according to the present utility model;

FIG. 4 is a schematic diagram of a fully welded eccentric half ball valve for heat supply with a hard seal structure provided by the utility model;

FIG. 5 is a schematic view of the valve body assembly of the hard seal structure of FIG. 4;

FIG. 6 is a schematic diagram of a flange structure of an all-welded eccentric half ball valve for heat supply;

reference numerals illustrate: 1-valve body, 2-side pipe, 3-hemisphere, 4-disk seat subassembly, 5-disk seat adjustment pad, 6-base, 7-upper valve rod, 8-lower valve rod, 9-bottom, 10-upper sleeve subassembly, 11-lower sleeve, 12-packing seal box, 13-packing clamp plate, 14-disk seat retaining ring, 15-flange, 16-O shape circle, 17-spring, 18-disk seat supporting ring, 19-sealing washer.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below 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 scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-6, in order to solve the technical problem of high cost of the large-caliber eccentric ball valve in the prior art, the embodiment of the utility model provides an all-welded eccentric half ball valve for heat supply, which comprises a rolled valve body 1, wherein an upper sleeve assembly 10 is welded above the axial eccentric position of the valve body 1, a lower sleeve 11 is welded below the axial eccentric position of the valve body 1, an upper valve rod 9 is arranged in the upper sleeve assembly 10, a lower valve rod 8 is arranged in the lower sleeve 11, a hemisphere 3 is directly arranged between the upper valve rod 9 and the lower valve rod 8, two ends of the valve body 1 are respectively welded with a side pipe 2, and a valve body assembly 4 is arranged between the hemisphere 3 and the side pipe 2;

specifically, the valve body 1 of the all-welded eccentric half ball valve is rolled by integrally forging or compression molding steel pipes or steel plates, in the embodiment, the valve body with small caliber is made of 20# seamless steel pipes, and the valve body with large caliber is made of seamed steel pipes rolled by steel plates.

During manufacturing, the upper sleeve and the lower sleeve are machined in the axial eccentric position of the valve body 1, and the upper sleeve assembly and the lower sleeve are welded on the valve body after machining. After welding, fitting parts such as a hemisphere, a bearing, an upper valve rod, a lower valve rod, a bottom cover, a packing seal box, a packing gland and the like are arranged in the valve body, and after assembling, the structures such as an upper valve rod 7, a lower valve rod 8, an upper sleeve assembly 10, a lower sleeve 11, a packing seal box 12, a packing pressure plate 13, a bottom cover 9 and the like are the same as those of the eccentric valve ball valve in the prior art, and are not repeated. And (3) placing the assembled valve body assembly on a corresponding die and a press, extruding the valve body in an arc shape to a corresponding size, and processing two ends (matched with the side pipe) of the pressed valve body to an assembly size. The hemispherical body 3 of the all-welded eccentric hemispherical valve is a conventional hemispherical body.

Referring to fig. 1 and 2, a valve seat retainer 14 is welded at the top of a side pipe 2, a valve seat assembly 4 is limited on a processing and matching end surface on the inner wall of the valve seat retainer 14 and the side pipe 5, the side pipe 2, the valve seat assembly 4, a valve seat adjusting pad 5, a base 6, the valve seat retainer 14 and the like are processed according to the drawing size, the processed base 6, the valve seat adjusting pad 5 and the valve seat assembly 4 are respectively arranged in the side pipe 2, and the valve seat retainer 14 is welded at the top of the side pipe 2 after the arrangement. In this embodiment, a base 6 is disposed on a processing end surface on the inner wall of the side pipe 2, a valve seat adjusting pad 5 for adjusting the position of the valve seat assembly 4 is disposed on the base, the valve seat assembly 4 is disposed on the valve seat adjusting pad 5, and the valve seat assembly 4 is in contact with the hemisphere 3 to realize sealing. Preferably, an adjusting mechanism for adjusting the front and rear positions of the valve seat adjusting pad is arranged on the base, and the adjusting mechanism can adopt an inner hexagon screw.

Further, referring to fig. 2, the valve seat assembly 4 includes a valve seat support ring 18, an O-ring 16 is arranged between the valve seat support ring and the side tube for sealing, one end of the valve seat support ring 18 is limited with the valve seat retainer ring 14, and the other end of the valve seat support ring is arranged on the valve seat adjusting pad 5 through a spring 17, so that the valve seat is ensured to be always tightly held by the hemisphere 3, and leakage cannot occur. The contact part of the valve seat support ring 18 and the hemispherical body is provided with a sealing ring 19 to realize sealing.

Furthermore, the material of the side pipe 2 is the same as that of the hemispherical body 3, so that uneven stress can not occur, and the side pipe can not deform when a vehicle passes through the ground, and has the same service life as a pipeline.

Referring to fig. 4-5, in other embodiments of the present utility model, the valve seat and the hemispherical body may directly adopt a hard sealing structure, such as a metal seal, and referring to fig. 5, the valve seat made of metal is directly contacted with the spherical surface of the hemispherical body to realize the hard seal. Of course, other hard seal forms and processes of the prior art may be employed, as long as the seal is achieved.

Referring to fig. 6, in other embodiments of the present utility model, an all-welded eccentric ball valve with a flange structure is further provided, and flanges are welded at the other ends of the side pipes 2 at both sides of the eccentric ball valve in the above embodiments.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a heat supply is with eccentric hemisphere valve of all welding, its characterized in that, including the valve body that the book was formed, the welding of valve body axial eccentric position top has an upper sleeve subassembly, and the welding of below has a lower sleeve, establish the upper valve rod in the upper sleeve subassembly, establish the lower valve rod in the lower sleeve, the upper valve rod with the hemisphere is directly installed to the lower valve rod, the valve body both ends have welded the limit pipe respectively, the hemisphere with be provided with valve body subassembly between the limit pipe.

2. The all-welded eccentric half ball valve for heat supply according to claim 1, wherein the valve body is rolled by integrally forged or compression-molded steel pipes or steel plates.

3. The all-welded eccentric half ball valve for heat supply according to claim 1, wherein the top of the side pipe is welded with a valve seat retainer ring, and the valve seat assembly is limited on a processing matching end surface on the valve seat retainer ring and the inner wall of the side pipe.

4. The all-welded eccentric half ball valve for heat supply according to claim 3, wherein a base is arranged on a processing matching end surface on the inner wall of the side pipe, a valve seat adjusting pad for adjusting the position of a valve seat assembly is arranged on the base, the valve seat assembly is arranged on the valve seat adjusting pad, the valve seat assembly is in contact with the hemispherical body to realize sealing, and the valve seat assembly is sealed with the side pipe through a sealing ring.

5. The all-welded eccentric semi-ball valve for heat supply according to claim 4, wherein an adjusting mechanism for adjusting the front and rear positions of the valve seat adjusting pad is arranged on the base.

6. The all-welded, eccentric semi-ball valve for heat supply according to claim 5, wherein said adjustment mechanism is a screw.

7. The all-welded eccentric semi-ball valve for heat supply according to any one of claims 1 to 6, wherein a packing box is arranged on the upper sleeve assembly, a packing pressing plate is arranged on the packing box, and a bottom cover is arranged at the lower end of the lower sleeve.

8. An all-welded, eccentric semi-ball valve for heat supply according to claim 3 or 4, wherein a hard seal structure is adopted between the valve seat assembly and the valve body.