CN219571027U

CN219571027U - Manual valve of large-caliber high-pressure pipeline with DN300 or more

Info

Publication number: CN219571027U
Application number: CN202320349959.0U
Authority: CN
Inventors: 庄选斌; 赵金龙; 郭积永; 周涛; 焦新龙; 宋立伟; 游华章; 张海岸; 成亚良; 李玲俊; 张亚东
Original assignee: Shijiazhuang Iron and Steel Co Ltd
Current assignee: Shijiazhuang Iron and Steel Co Ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-08-22
Anticipated expiration: 2033-03-01

Abstract

The utility model relates to a manual valve of a large-caliber high-pressure pipeline with DN300 or more, in particular to a manual gate valve, a butterfly valve or a stop valve with pipeline pressure larger than 1Mpa, belonging to the technical field of manual valves on high-pressure pipelines in the metallurgical industry. The technical proposal is as follows: contain case (1), valve body (2), valve rod (3) and valve handle (4), its characterized in that: holes are respectively formed in two sides of the valve core (1), the holes in two sides of the valve core (1) are communicated through a connecting pipe (6), and a bypass valve (5) is arranged on the connecting pipe (6); the bypass valve (5) on the connecting pipe (6) is a ball valve; holes on two sides of the valve core (1) are arranged along the radial direction of the valve body (2); two ends of the connecting pipe (6) are respectively welded on the valve body (2). The beneficial effects of the utility model are as follows: the problem that when the large-caliber manual valve is opened and closed, the valve is not easy to open and close due to the fact that medium pressure difference is large on two sides of an inlet and an outlet of the valve can be effectively solved.

Description

Manual valve of large-caliber high-pressure pipeline with DN300 or more

Technical Field

The utility model relates to a manual valve of a large-caliber high-pressure pipeline with DN300 or more, in particular to a manual gate valve, a butterfly valve or a stop valve with pipeline pressure larger than 1Mpa, belonging to the technical field of manual valves on high-pressure pipelines in the metallurgical industry.

Background

In the metallurgical industry, the manual valve arranged on the large-caliber high-pressure pipeline with the DN300 or more can be difficult to switch due to the influence of the pressure difference of the medium before and after the manual valve in the use process because the pressure of the medium in the pipeline is more than 1 Mpa. If the valve is opened or closed by other tools, the handle and the valve body of the valve are damaged easily, the hand wheel is damaged, the valve rod is bent, and the like, so that the operator is troublesome and long-term use is not facilitated.

Disclosure of Invention

The utility model aims to provide a manual valve for a large-caliber high-pressure pipeline with more than DN300, which can be used for conveniently opening and closing the manual valve and solving the problems in the background technology.

The technical scheme of the utility model is as follows:

the utility model provides a large-bore high-pressure pipeline manual valve more than DN300, contains case, valve body, valve rod and valve handle, sets up a hole respectively in case both sides, the hole of case both sides is through the connecting pipe intercommunication, is equipped with the bypass valve on the connecting pipe.

And the bypass valve on the connecting pipe is a ball valve.

Holes on two sides of the valve core are arranged along the radial direction of the valve body.

And two ends of the connecting pipe are respectively welded on the valve body.

By adopting the utility model, because the mediums such as steam, high-pressure water and the like form pressure difference before and after the manual valve, when the manual valve is opened or closed, the bypass valve on the connecting pipe is opened first, the mediums can enter the outlet end through the connecting pipe, the problem of balancing the pressure difference at two sides of the valve core is solved, and the valve is easy to operate normally.

The beneficial effects of the utility model are as follows: the problem that when the large-caliber manual valve is opened and closed, the valve is not easy to open and close due to the fact that medium pressure difference is large on two sides of an inlet and an outlet of the valve can be effectively solved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

in the figure: valve core 1, valve body 2, valve rod 3, valve handle 4, ball valve 5, communicating pipe 6.

Description of the embodiments

The utility model is further illustrated by way of example with reference to the accompanying drawings.

Referring to fig. 1, a manual valve for a large-caliber high-pressure pipeline with more than DN300 comprises a valve core 1, a valve body 2, a valve rod 3 and a valve handle 4, wherein two holes are respectively arranged on two sides of the valve core 1, the holes on two sides of the valve core 1 are communicated through a connecting pipe 6, and a bypass valve 5 is arranged on the connecting pipe 6.

In this embodiment, the valve core 1, the valve body 2, the valve rod 3 and the valve handle 4 are combined together to form a main valve, and the main valve has the following dimensions: DN300-DN1000 (DN 1000 above the valve recommended to use an actuator), by-pass valve 5 uses a ball valve, easy to operate. Specific dimensional comparisons were as follows:

referring to fig. 1, holes on both sides of a valve core 1 are arranged along the radial direction of a valve body 2, both ends of a connecting pipe 6 are respectively welded on the valve body 2, and both ends of the connecting pipe 6 are respectively communicated with radial holes on both sides of the valve body 2.

When the main valve is in a closed state, the bypass valve 5 on the communicating pipe 6 is firstly opened, and after medium flows into the valve from the front of the valve through the connecting pipe 6, the pressure problem of the medium before and after the valve is solved, and then the valve handle 4 is operated, so that the rotation of the valve core 1 is easy to realize, and the valve is smoothly opened;

when the main valve is in an open state and the valve is pre-closed, the same operation can be adopted, the bypass valve 5 on the communicating pipe 6 is firstly opened, then the valve handle 4 is operated, the rotation of the valve core 1 is smoothly realized, and after the valve is closed, the bypass valve 5 on the communicating pipe 6 is closed.

Claims

1. The utility model provides a manual valve of heavy-calibre high pressure pipeline more than DN300, contains case (1), valve body (2), valve rod (3) and valve handle (4), its characterized in that: holes are respectively formed in two sides of the valve core (1), the holes in two sides of the valve core (1) are communicated through a connecting pipe (6), and a bypass valve (5) is arranged on the connecting pipe (6).

2. A manual valve for large diameter high pressure pipeline with DN300 or more as claimed in claim 1, wherein: the bypass valve (5) on the connecting pipe (6) is a ball valve.

3. A manual valve for a large-caliber high-pressure pipeline with more than DN300 according to claim 1 or 2, wherein: holes on two sides of the valve core (1) are arranged along the radial direction of the valve body (2).

4. A manual valve for a large-caliber high-pressure pipeline with more than DN300 according to claim 1 or 2, wherein: two ends of the connecting pipe (6) are respectively welded on the valve body (2).