Error correction control system for sludge plunger pump and working method

A technology of control system and error correction, applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc., can solve the problems of difficult repair, pressure loss, system pressure loss, etc. The effect of service life and stable work

Active Publication Date: 2018-01-19
SICHUAN CRUN CO LTD
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Problems solved by technology

[0002] In the field of sludge low-temperature carbonization treatment, the currently used sludge plunger pump adopts the method of frequency converter and cam to drive the plunger pump; when the system is started, it needs to be started at zero pressure, and the motor will gradually increase the pressure after the start-up, resulting in a long start-up time. It is very long; the opening and closing of the feed port of the plunger pump is forced to open and close by the matching relationship between the cams. Since the transmission medium is sludge, the system often wears out, the valve is stuck, the cam or the valve core is worn, and often As a result, the feed inlet cannot be completely closed or opened, causing t

Method used

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Embodiment Construction

[0039] The control system of the present invention is suitable for sludge plunger pumps (especially high-pressure sludge plunger pumps), and the sludge plunger pump includes No. 1 oil cylinder, No. 2 oil cylinder, No. .

[0040] The hardware part of the control system includes related electrical components equipped to realize the whole set of procedures, PLC controllers and human-computer interaction interfaces respectively connected with the PLC controllers, several displacement sensors, several pressure transmitters, hydraulic systems, photoelectric coupling device, intermediate relay, AC contactor, circuit breaker, and the PLC controller is Siemens S7-1500PLC controller.

[0041] To be introduced below.

[0042] The PLC controller includes a power supply, a central processing unit with a motion control module, a digital input module (with the advantages of high speed and support for synchronous mode), a digital output module (with the advantages of high speed and support f...

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PUM

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Abstract

The invention provides an error correction control system for a sludge plunger pump and a working method thereof. The system comprises a first oil cylinder, a second oil cylinder, a third oil cylinderand a main sludge discharge port, each oil cylinder is provided with a ceramic plunger pump, each oil cylinder is provided with a power source by a hydraulic system, and the control system comprisesthe hydraulic system, a PLC, a man-machine interaction interface, a plurality of displacement sensors and a plurality of pressure transmitters, wherein the man-machine interaction interface, the displacement sensors and the pressure transmitters are in communication connection with the PLC. The error correction control system is obtained by overcoming the defects of similar sludge treatment systems such as an existing urban sludge treatment system, by additionally arranging the hydraulic control system on the basis of an existing mechanical sludge plunger pump, equipment repair and maintenanceare quite convenient, and a whole machine has excellent working performance and a long service life and can stably work for a long time in the environment where sludge is used as a working medium.

Description

technical field [0001] The invention belongs to the technical field of hydraulic system control, and in particular relates to an error correction control system and working method for a sludge plunger pump. Background technique [0002] In the field of sludge low-temperature carbonization treatment, the currently used sludge plunger pump adopts the method of frequency converter and cam to drive the plunger pump; when the system is started, it needs to be started at zero pressure, and the motor will gradually increase the pressure after the start-up, resulting in a long start-up time. It is very long; the opening and closing of the feed port of the plunger pump is forced to open and close by the matching relationship between the cams. Since the transmission medium is sludge, the system often wears out, the valve is stuck, the cam or the valve core is worn, and often As a result, the feed inlet cannot be completely closed or opened, causing the system pressure to be unstable o...

Claims

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Application Information

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IPC IPC(8): F15B21/08
Inventor 李骏霖钟华敏李辉王成鑫
Owner SICHUAN CRUN CO LTD
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