CN209764414U

CN209764414U - double suction centrifugal pump outlet valve fault monitoring device

Info

Publication number: CN209764414U
Application number: CN201920719778.6U
Authority: CN
Inventors: 王伯文
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2019-12-10
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses a double entry centrifugal pump export valve fault monitoring device, it includes: the device is used for monitoring and preventing valve damage and water pipe explosion accidents caused by 'water hammer effect' from the hydraulic angle by monitoring the opening of the double suction centrifugal pump and the pressure change process of a measuring point of a water outlet pipe.

Description

Double suction centrifugal pump outlet valve fault monitoring device

Technical Field

The utility model relates to a water pump station engineering prevention device specifically is a double suction centrifugal pump export valve fault monitoring device.

Background

When the water supply pump is started and stopped, water flow behind the valve impacts the pipeline, and a serious water hammer phenomenon can be generated. According to impulse theorem: f Δ t ═ m Δ V, i.e. the pressure acting on the valve or pipe X acts for a time equal to the mass of water X the flow rate of water. Because the inner wall of the water pipe is smooth, water can freely flow. When the open valve is suddenly closed or the water pump is stopped, the water flow generates a pressure on the valve and the pipe wall, mainly the valve or the pump. Because the pipe wall is smooth, the water power of the subsequent water flow quickly reaches the maximum under the action of inertia, and the subsequent water flow generates a destructive effect, namely a water hammer effect in hydraulics, which is also called water hammer. The instantaneous pressure can greatly exceed the normal pressure and often produce destructive effects. In a multi-silt pump station, the phenomenon is more common, and the damage degree is larger.

The existing monitoring method only judges the safety condition of the outlet valve of the centrifugal pump by monitoring a hydraulic control system of the valve and a mechanical structure of the valve, and the method is complex and has an unobvious monitoring effect.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to solve the not enough of prior art, a double suction centrifugal pump outlet valve fault monitoring device, from the hydraulics angle, through monitoring double suction centrifugal pump outlet valve opening and outlet pipe measurement station pressure variation process, monitor and prevent owing to the valve damage that "water hammer effect" leads to and the water pipe explosion accident.

The technical scheme is as follows: in order to realize above purpose, a double entry centrifugal pump export valve fault monitoring device, it includes: the pressure sensor comprises a shell, a pressure sensor, an expansion groove socket installed on the shell, a main circuit board installed in the shell, a central processing module, an output module and a power module integrated on the main circuit board, wherein the main circuit board is connected with an expansion groove, and the power module is used for supplying power to the pressure sensor, the central processing module and the output module.

As a further preferred aspect of the present invention, the pressure sensor is connected to the main circuit board in the housing through a signal line, and the housing is connected to the main circuit board through a power connector.

As a further preferred aspect of the present invention, the output module includes a display screen and a communication module.

As a further preferred aspect of the present invention, the central processing module displays the data of the pressure sensor through the display screen.

As a further preferred aspect of the present invention, the communication module is based on WIFI, bluetooth, infrared, Zigbee, 2G, 3G or 4G communication protocol.

As the utility model discloses a further preferred, the valve aperture appearance of monitoring double entry centrifugal pump outlet valve passes through the extension groove and is connected with main circuit board.

As a further preferred aspect of the present invention, the expansion slot interface is installed outside the housing or inside the housing.

Has the advantages that: a double suction centrifugal pump export valve fault monitoring devices, compare with prior art, the device's structure is simpler, work safe and reliable, easily operation, and application scope is wide, can be applicable to the environment of various quality of water, also can use on the valve exit position of many silt pump stations.

Drawings

Fig. 1 is a schematic structural view of the present invention;

Fig. 2 is a circuit block diagram of the present invention;

In the figure: 101: a housing; 102: a pressure sensor; 103: expanding the slot interface; 104: a main circuit board; 110: a central processing module; 120: an output module; 121: a display screen interface; 130: a power supply module; 131: a power supply connector; 140: and expanding the slot.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

As shown in FIG. 1, the utility model discloses a double entry centrifugal pump outlet valve fault monitoring device, it includes: the pressure sensor comprises a shell 101, a pressure sensor 102, an expansion slot interface 103, a main circuit board 104, a central processing module 110, an output module 120, a display screen interface 121, a power supply module 130, a power supply connector 131 and an expansion slot 140.

Examples

As shown in FIG. 2, the double suction centrifugal pump outlet valve failure monitoring device of the present invention can be used in various water pump station working environments, and multiple sand pump stations can also be used, before using the device, the hydraulic transition process of numerical simulation valve opening and closing determines the corresponding characteristic pressure value when the valve is refused and the valve is abnormally closed and inputs the characteristic pressure value into the central processing module 110, the valve opening instrument on the valve is connected to the expansion slot interface 103 on the shell 101, and the pressure sensor 102 is installed behind the electric valve, when the water pump station normally works, the water flow impacts the main channel pipe wall, the pressure sensor 102 monitors the pressure change, the pressure value is transmitted into the central processing module 110, meanwhile, the valve opening instrument also transmits the valve opening data into the central processing module 110, the central processing module 110 transmits the received data to the external display screen and the equipment connected with the communication module through the display screen interface 121, meanwhile, the central processing module 110 compares the actual pressure with the characteristic pressure value, simulates and corrects the valve opening degree, so that whether the pressure in the main channel has a fault risk is obtained, and the result is transmitted to an external display screen and equipment connected with a communication module, so that the purposes of monitoring and preventing the valve fault and the pipe explosion accident are achieved, and the economic loss caused by the accident is reduced.

Claims

1. The utility model provides a double entry centrifugal pump export valve fault monitoring device which characterized in that: it includes: the pressure sensor comprises a shell (101), a pressure sensor (102), an expansion slot socket (103) arranged on the shell (101), a main circuit board (104) arranged in the shell (101), and a central processing module (110), an output module (120) and a power module (130) which are integrated on the main circuit board (104), wherein the main circuit board (104) is connected with an expansion slot (140), and the power module (130) is used for supplying power to the pressure sensor (102), the central processing module (110) and the output module (120).

2. A double suction centrifugal pump outlet valve fault monitoring device according to claim 1, wherein: the pressure sensor (102) is connected with a main circuit board (104) in the shell (101) through a signal line.

3. a double suction centrifugal pump outlet valve fault monitoring device according to claim 1, wherein: the output module (120) comprises a display screen and a communication module.

4. A double suction centrifugal pump outlet valve fault monitoring device according to claim 1, wherein: the central processing module (110) connects the data of the pressure sensor (102) with a display screen through a display screen interface (121) for displaying.

5. A double suction centrifugal pump outlet valve fault monitoring device according to claim 3, wherein: the communication module is based on WIFI, Bluetooth, infrared, Zigbee, 2G, 3G or 4G communication protocols.

6. A double suction centrifugal pump outlet valve fault monitoring device according to claim 1, wherein: the valve opening instrument for monitoring the outlet valve of the double-suction centrifugal pump is connected with the main circuit board (104) through the expansion groove (140).

7. A double suction centrifugal pump outlet valve fault monitoring device according to claim 1, wherein: the expansion slot interface (103) is arranged outside the shell (101) or inside the shell (101).