CN215334671U

CN215334671U - Pneumatic valve

Info

Publication number: CN215334671U
Application number: CN202121869887.XU
Authority: CN
Inventors: 危松江; 田国光; 贺凯悉; 彭建颂
Original assignee: Changsha Ser Turbomachinery Co ltd
Current assignee: Changsha Ser Turbomachinery Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-12-28
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a pneumatic valve, wherein four pressure sensors are arranged in a valve body, the distances between the four pressure sensors are consistent, the four pressure sensors are respectively arranged in an air inlet cavity and an air outlet cavity in pairs, a gas detector is arranged on the outer side of the valve body, a display device is arranged on the surface of the valve body, and the four pressure sensors are all electrically connected with the display device. When the pneumatic valve disclosed by the utility model detects gas leakage, the pressure difference distributed among the pressure sensors in the valve body can be used for quickly and directly observing the position from which the leakage is generated through the display equipment, the whole valve does not need to be replaced during maintenance, and a large amount of cost is saved; the cover plate is arranged at the bottom of the valve core, when the valve is closed, the cover plate is fully combined with the valve seat to form separation, abrasion between the valve core and the valve seat is avoided, and incomplete air leakage caused by contact between the valve core and the valve seat after the traditional piston type valve core is rubbed with the valve seat is avoided.

Description

Pneumatic valve

Technical Field

The utility model relates to the technical field of valves, in particular to a pneumatic valve.

Background

The pneumatic valve is driven by compressed air, and the pneumatic valve can meet purchasing requirements only by specifying specification, category and pressure when purchased, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

In most cases, the conveying pipeline is difficult to damage, and gaps are generated at the joints of the valve and the conveying pipeline during long-time use of the valve, so that fluid leakage is caused. Once the fluid controlled by the valve leaks, most of the fluid can pollute the environment, even cause great property loss or casualties, so that repair can be found in time when the fluid leaks, and the influence can be reduced to the minimum.

However, most of the gas leakage occurs at the joints of the valve and outdoor conveying pipelines and indoor conveying pipelines, and only a small part of the gas leakage is that cracks appear on the valve body and need to be replaced. However, the position of leakage cannot be visually checked in the valves on the market at present, so that the whole valve is usually replaced during maintenance, and the replaced valve is treated as a damaged valve, thereby causing a great amount of waste. In addition, current case is mostly piston, can take place the friction with the disk seat when opening and shutting, leads to the case to take place wearing and tearing to arouse that the contact of case and disk seat is incomplete, admittedly still have gas leakage when closing the valve, and it is more troublesome to change the case, so when discovering that the valve still can't completely isolated gas circulation after closing, can change whole valve, this life that has also led to this kind of valve is shorter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the technical defects in the prior art and disclose a pneumatic valve.

In order to realize the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

a pneumatic valve comprises a main pipe body, wherein a valve body is arranged in the middle of the main pipe body; the two ends of the main pipe body are provided with first pressure sensors, and a plurality of second pressure sensors are uniformly distributed between the pressure sensors at the two ends; the valve seat is formed on the inner wall of the main pipe body and comprises a circular baffle, through holes are formed in the circular baffle, the circular baffle is connected with the top of the main pipe body through an upper supporting plate, the circular baffle is connected with the bottom of the main pipe body through a lower supporting plate, the main pipe body is divided into an air inlet cavity and an air exhaust cavity by the valve seat, and the air inlet cavity is communicated with the air exhaust cavity through the through holes; a stretching device is arranged in the valve body and connected with a valve rod, the bottom of the valve rod extends out of the bottom of the valve body and penetrates through the through hole to be connected with a cover plate, and the diameter of the cover plate is larger than the inner diameter of the through hole; the valve body outside is installed harmful gas detection device, and harmful gas detection device electric connection has display device, and display device electric connection has power, first pressure sensor and second pressure sensor.

Further, install LED lamp and bee calling organ on the display device, LED lamp and the equal electric connection power of bee calling organ.

Furthermore, a sealing ring is arranged on the upper surface of the cover plate.

Furthermore, the display device is a touch display screen, the touch display screen is electrically connected with a control device, a first pressure sensor, a second pressure sensor and a harmful gas detection device, the control device is connected with a stretching device, and the control device is electrically connected with a power supply.

Furthermore, the stretching device is an air cylinder, and the control equipment is an electromagnetic valve.

Further, the harmful gas detection device is a gas detector.

Further, the power supply is installed inside the valve body, and the power supply electric connection has a switch, and the switch is installed outside the valve body.

Compared with the prior art, the utility model has the advantages that:

the gas detector is arranged on the outer side of the valve body, the four pressure sensors are arranged in the valve body, the intervals of the four pressure sensors are consistent, the four pressure sensors are directly connected with the display equipment, and once the gas detector on the outer side of the valve body detects gas leakage, the positions of gaps can be directly obtained by observing the pressure difference between the four pressure sensors displayed on the display equipment; the display equipment is provided with alarm equipment, and can give out sound and light alarm for reminding in an abnormal condition; if the third detection device detects that the gas leaks or the central control chip determines that the leakage position is in the exhaust cavity, the central control chip transmits a signal to the control equipment to control the cylinder to be closed, so that the gas is prevented from leaking again; the bottom of the valve core is connected with the cover plate, so that the valve core and the valve seat can be effectively prevented from being abraded in the process of closing the valve.

Drawings

FIG. 1 is a schematic view of the valve structure of the present invention;

FIG. 2 is a schematic view of a display device according to the present invention;

wherein: 1. the main pipe body, 11, go up the bracing piece, 12, the ring flange, 141, first pressure sensor, 142, second pressure sensor, 15, the exhaust chamber, 16, the chamber of admitting air, 17, the through-hole, 18, the bottom suspension fagging, 19, circular baffle, 2, the valve body, 21, the cylinder, 22, the valve rod, 23, the apron, 231, the sealing washer, 24, controlgear, 26, display device, 27, the power, 271, the switch, 28, harmful gas detection device, 32, the LED lamp, 33, bee calling organ.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1

A pneumatic valve comprises a main pipe body 1, wherein a valve body 2 is arranged in the middle of the main pipe body 1; the two ends of the main pipe body 1 are provided with first pressure sensors 141, and a plurality of second pressure sensors 142 are uniformly distributed between the pressure sensors 14 at the two ends; a valve seat is formed on the inner wall of the main pipe body 1, the valve seat comprises a circular baffle plate 19, a through hole 17 is formed in the circular baffle plate 19, the circular baffle plate 19 is connected with the top of the main pipe body 1 through an upper supporting plate 11, the circular baffle plate 19 is connected with the bottom of the main pipe body 1 through a lower supporting plate 18, the inside of the main pipe body 1 is divided into an air inlet cavity 17 and an air exhaust cavity 16 by the valve seat, and the air inlet cavity 16 is communicated with the air exhaust cavity 15 through the through hole 17; a stretching device is arranged in the valve body 2 and connected with a valve rod 22, the bottom of the valve rod 22 extends out of the bottom of the valve body 2 and penetrates through the through hole 17 to be connected with a cover plate 23, and the diameter of the cover plate 23 is larger than the inner diameter of the through hole 17; the upper surface of the cover plate 23 is provided with a sealing ring 231. And a harmful gas detection device 28 is installed on the outer side of the valve body 2, and the harmful gas detection device 28 is a gas detector. The harmful gas detection device 28 is electrically connected with a display device 26, the display device 26 is electrically connected with a power supply 27, a first pressure sensor 141 and a second pressure sensor 142, the display device 26 is provided with an LED lamp 32 and a buzzer 33, and the LED lamp 32 and the buzzer 33 are both electrically connected with the power supply 28. The power supply 27 is installed inside the valve body 2, the power supply 27 is electrically connected with a switch 271, and the switch 271 is installed outside the valve body 2.

The display device 26 is provided with a touch display screen, the touch display screen is electrically connected with a control device 24, a first pressure sensor 141, a second pressure sensor 142 and a harmful gas detection device 28, the control device 24 is connected with the stretching device 21, and the control device 24 is electrically connected with a power supply 27. The stretching device is a cylinder 21, and the control equipment 24 is a solenoid valve.

The using method comprises the following steps:

the structure of the valve is shown in fig. 1, when gas leakage occurs at the valve, the gas detector detects the gas, and the central control chip can judge the pressure difference between the pressure sensors. The value of the left pressure sensor in the air inlet cavity is U1, the value of the pressure sensor in the air inlet cavity is U2, the value of the left pressure sensor of the exhaust bin is U3, and the value of the right pressure sensor of the exhaust bin is U4:

1. if U1 is U2 is U3 is U4, the gap is located at the joint of the air inlet cavity 16 and the outdoor conveying pipeline, at the moment, the main pipeline needs to be cut off, and the joint of the air inlet cavity 16 side needs to be sealed and reinforced;

2. if the difference exists among the U1, the U2, the U3 and the U4 and is not changed, the gap is located at the joint of the exhaust cavity 15 and an indoor conveying pipeline, at the moment, the central control chip controls the disconnection of the electromagnetic valve, the cylinder drives the valve rod to retract until the valve core 23 is attached to the valve seat 11 to form sealing, and the joint of the exhaust cavity 15 side is sealed and reinforced.

3. If differences exist among U1, U2, U3 and U4, and the differences change, the gap is located on the valve body, and at the moment, the main pipeline needs to be cut off, and the valve body needs to be replaced.

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. Pneumatic valve comprising a main tube (1), characterized in that: the middle part of the main pipe body (1) is provided with a valve body (2); the two ends of the main pipe body (1) are provided with first pressure sensors (141), and a plurality of second pressure sensors (142) are uniformly distributed between the pressure sensors (14) at the two ends; the inner wall of the main pipe body (1) is provided with a valve seat, the valve seat comprises a circular baffle (19), a through hole (17) is formed in the circular baffle (19), the circular baffle (19) is connected with the top of the main pipe body (1) through an upper supporting plate (11), the circular baffle (19) is connected with the bottom of the main pipe body (1) through a lower supporting plate (18), the inside of the main pipe body (1) is divided into an air inlet cavity (16) and an air exhaust cavity (15) by the valve seat, and the air inlet cavity (16) is communicated with the air exhaust cavity (15) through the through hole (17); a stretching device is arranged in the valve body (2), the stretching device is connected with a valve rod (22), the bottom of the valve rod (22) extends out of the bottom of the valve body (2) and penetrates through the through hole (17) to be connected with a cover plate (23), and the diameter of the cover plate (23) is larger than the inner diameter of the through hole (17); the valve is characterized in that a harmful gas detection device (28) is installed on the outer side of the valve body (2), the harmful gas detection device (28) is electrically connected with a display device (26), and the display device (26) is electrically connected with a power supply (27), a first pressure sensor (141) and a second pressure sensor (142).

2. A pneumatic valve as set forth in claim 1, wherein: the LED lamp (32) and the buzzer (33) are mounted on the display device (26), and the LED lamp (32) and the buzzer (33) are both electrically connected with the power supply (27).

3. A pneumatic valve as set forth in claim 1, wherein: and a sealing ring (231) is arranged on the upper surface of the cover plate (23).

4. A pneumatic valve as set forth in claim 1, wherein: the display device (26) is a touch display screen, the touch display screen is electrically connected with a control device (24), a first pressure sensor (141), a second pressure sensor (142) and a harmful gas detection device (28), the control device (24) is connected with a stretching device (21), and the control device (24) is electrically connected with a power supply (27).

5. A pneumatic valve as set forth in claim 4, wherein: the stretching device is an air cylinder (21), and the control equipment (24) is an electromagnetic valve.

6. A pneumatic valve as set forth in claim 1, wherein: the harmful gas detection device (28) is a gas detector.

7. A pneumatic valve as set forth in claim 1, wherein: the power supply (27) is installed inside the valve body (2), the power supply (27) is electrically connected with a switch (271), and the switch (271) is installed outside the valve body (2).