CN214946627U

CN214946627U - Air seal valve group for cutting off flue gas

Info

Publication number: CN214946627U
Application number: CN202120629242.2U
Authority: CN
Inventors: 张炳罡
Original assignee: Luoyang Yanhao Energy Saving Technology Co ltd
Current assignee: Luoyang Yanhao Energy Saving Technology Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-11-30
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses an air seal valve group for cutting off flue gas, which relates to the technical field of flue gas pipelines, and comprises a flue shell, wherein valve plate check rings are respectively and fixedly arranged at two ends inside the flue shell, vent holes are formed in the valve plate check rings, valve plate blades are movably arranged at one side of the valve plate check rings close to the center of the flue shell, and the valve plate blades correspond to the vent holes; has the advantages that: the air supply system is started by arranging a pneumatic actuator and a four-bar mechanism to control the valve plate blades to block the channel in a matching manner, air is supplied to the interior of the flue shell from the balance air inlet pipe, the valve plate blades are blown by air pressure to block the air holes, and the air pressure in the balance air cavity is balanced with the air pressure of flue gas to realize zero leakage and cut off the flue gas; when the flue gas is led to needs, stop the air feed system air feed, control valve plate blade is opened, and flue casing both ends switch on, and the check valve avoids the flue gas to spill from the balanced gas inlet tube, realizes the on-off control of flue, avoids revealing.

Description

Air seal valve group for cutting off flue gas

Technical Field

The utility model relates to a flue gas pipeline technical field especially relates to an air seal valves of cutting off flue gas.

Background

At present in fields such as oil refining, petrochemical industry, environmental protection to the switching-off of flue gas pipeline, the most commonly used is equipment such as flue baffle (butterfly valve) and water seal tank, flue baffle (butterfly valve) exist the leakage rate great, even the zero leakage flue baffle of Luoyang big handle petrochemical equipment limited company production (patent number ZL.201921648278.4) also is zero leakage in theory, the water seal tank exists the pressure drop big, bulky, the cost is high, along with the accurate control to the technology, the requirement of flue gas pipeline internal smoke cut-off also more and more high, a wind seal valve group that cuts off the flue gas absorbs these two advantages better, reached and thoroughly cut off flue gas pipeline internal smoke.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air seal valves for solving above-mentioned problem and cutting off the flue gas.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a wind seal valve group for cutting off flue gas comprises a flue shell, wherein valve plate retaining rings are fixedly mounted at two ends inside the flue shell respectively, vent holes are formed in the valve plate retaining rings, valve plate blades are movably arranged on one side, close to the center of the flue shell, of the valve plate retaining rings and correspond to the vent holes, four-bar mechanisms are movably arranged on one side, close to the center of the flue shell, of the valve plate blades, the four-bar mechanisms are fixedly mounted on a pneumatic actuator, a gas collecting pipe is connected to the front end of the pneumatic actuator in a sealing mode after the front end of the pneumatic actuator extends out of the flue shell, and a solenoid valve is mounted on one side, far away from the pneumatic actuator, of the gas collecting pipe in a sealing mode; a balance gas inlet pipe is hermetically arranged in the middle of the lower surface of the flue shell, and a one-way valve is arranged in the balance gas inlet pipe; and the balance gas inlet pipe is hermetically connected to the air supply system through a pipeline.

Preferably: the check valve is composed of a baffle plate which is obliquely arranged, and the baffle plate is rotatably connected with the balance gas inlet pipe.

Preferably: the flue shell, the one-way valve, the valve plate retainer ring and the valve plate blade form a closed balance air cavity in a surrounding mode.

Compared with the prior art, the beneficial effects of the utility model reside in that: the air supply system is started by arranging a pneumatic actuator and a four-bar mechanism to control the valve plate blades to block the channel in a matching manner, air is supplied to the interior of the flue shell from the balance air inlet pipe, the valve plate blades are blown by air pressure to block the air holes, and the air pressure in the balance air cavity is balanced with the air pressure of flue gas to realize zero leakage and cut off the flue gas; when the flue gas is led to needs, stop the air feed system air feed, control valve plate blade is opened, and flue casing both ends switch on, and the check valve avoids the flue gas to spill from the balanced gas inlet tube, realizes the on-off control of flue, avoids revealing.

Drawings

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

Fig. 1 is a schematic view of the structure of the wind seal valve set for cutting off the smoke of the present invention.

Fig. 2 is a right side view structure diagram of an air sealing valve set for cutting off smoke.

Fig. 3 is an enlarged view of a position a of the wind seal valve set for cutting off the smoke of the present invention.

The reference numerals are explained below:

1. a flue housing; 2. a valve plate vane; 3. a balanced air cavity; 4. an inlet tube for balance gas; 5. a one-way valve; 6. an air supply system; 7. a valve plate retainer ring; 8. a four-bar linkage; 9. a pneumatic actuator; 10. a gas collecting pipe; 11. an electromagnetic valve.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but not for indicating or implying that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention, and further that the terms "first", "second", etc., are used only for descriptive purposes and are not to indicate or imply relative importance or imply the number of technical features being referred to, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or the two elements may be connected through an intermediate medium, and the specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, an air sealing valve set for cutting off flue gas includes a flue housing 1, two ends of the inside of the flue housing 1 are respectively and fixedly provided with a valve plate retainer 7, the valve plate retainer 7 is used for fixing a partition, the valve plate retainer 7 is provided with a vent hole, the vent hole is used for communicating, one side of the valve plate retainer 7 close to the center of the flue housing 1 is movably provided with a valve plate blade 2, the valve plate blade 2 is used for plugging, the valve plate blade 2 is arranged corresponding to the vent hole, one side of the valve plate blade 2 close to the center of the flue housing 1 is movably provided with a four-bar mechanism 8, the four-bar mechanism 8 is used for pushing, the four-bar mechanism 8 is fixedly installed on a pneumatic actuator 9, the pneumatic actuator 9 is used for driving the four-bar mechanism 8 to act, the front end of the pneumatic actuator 9 extends out of the flue housing 1 and is hermetically connected with a gas collecting pipe 10, the gas collecting pipe 10 is used for collecting gas, one side of the gas collecting pipe 10 far away from the pneumatic actuator 9 is hermetically installed with an electromagnetic valve 11, the electromagnetic valve 11 is used for controlling ventilation; a balance gas inlet pipe 4 is hermetically arranged in the middle of the lower surface of the flue shell 1, a one-way valve 5 is arranged in the balance gas inlet pipe 4, and the one-way valve 5 is used for one-way gas inlet; the balance gas inlet pipe 4 is hermetically connected to the air supply system 6 through a pipeline; the check valve 5 consists of a baffle which is obliquely arranged and is rotationally connected with the balance gas inlet pipe 4; the flue shell 1, the one-way valve 5, the valve plate retainer ring 7 and the valve plate blade 2 enclose a closed balance air cavity 3.

The working principle is as follows: when the flue gas is required to be cut off in use, the electromagnetic valve 11 is electrified, the pneumatic actuator 9 drives the four-bar linkage mechanism 8 to act, so that the valve plate blades 2 are closed, the air supply system 6 is started, air is supplied to the interior of the flue shell 1 from the balance gas inlet pipe 4, the valve plate blades 2 are blown by air pressure to block the air holes, and the air pressure in the balance gas cavity 3 is balanced with the flue gas pressure to realize zero leakage and cut off the flue gas; when the flue gas is required to be introduced, the electromagnetic valve 11 is powered off, the valve plate blades 2 are opened, the air supply system 6 stops supplying air, the two ends of the flue shell 1 are conducted, and the check valve 5 prevents the flue gas from leaking from the balance gas inlet pipe 4.

Having shown and described the basic principles, essential features and advantages of the invention, it should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are merely illustrative, but rather are intended to cover various changes and modifications within the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a cut off wind of flue gas seals valve train, includes flue casing (1), its characterized in that: a valve plate retainer ring (7) is fixedly mounted at each of two ends inside the flue shell (1), a vent hole is formed in the valve plate retainer ring (7), a valve plate blade (2) is movably arranged at one side, close to the center of the flue shell (1), of the valve plate retainer ring (7), the valve plate blade (2) is arranged corresponding to the vent hole, a four-bar mechanism (8) is movably arranged at one side, close to the center of the flue shell (1), of the valve plate blade (2), the four-bar mechanism (8) is fixedly mounted on a pneumatic actuator (9), a gas collecting pipe (10) is connected to the front end of the pneumatic actuator (9) in a sealing mode after the front end of the pneumatic actuator (9) extends out of the flue shell (1), and an electromagnetic valve (11) is mounted on one side, far away from the pneumatic actuator (9), of the gas collecting pipe (10) in a sealing mode; a balance gas inlet pipe (4) is hermetically installed in the middle of the lower surface of the flue shell (1), and a one-way valve (5) is arranged inside the balance gas inlet pipe (4); the balance gas inlet pipe (4) is connected to the air supply system (6) through a pipeline in a sealing mode.

2. The air sealing valve group for cutting off smoke according to claim 1, wherein: the check valve (5) is composed of a baffle plate which is obliquely arranged, and the baffle plate is rotationally connected with the balance gas inlet pipe (4).

3. The air sealing valve group for cutting off smoke according to claim 1, wherein: the flue shell (1), the one-way valve (5), the valve plate retainer ring (7) and the valve plate blades (2) enclose a closed balance air cavity (3).