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Steplessly adjustable speed diesel engine-centrifugal pump combination

A diesel engine and centrifugal pump technology, applied in engine control, machine/engine, liquid fuel engine, etc., can solve the problems of inability to accurately adjust the speed change, inability to achieve stepless speed regulation, and unstable diesel engine adjustment process, etc. Achieve the effect of solving the jumping change of speed, accurate speed and improving maneuverability

Active Publication Date: 2018-01-05
西安航天泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the original adjustment process of the diesel engine is unstable and cannot accurately adjust the speed change, and cannot realize stepless speed regulation

Method used

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  • Steplessly adjustable speed diesel engine-centrifugal pump combination
  • Steplessly adjustable speed diesel engine-centrifugal pump combination
  • Steplessly adjustable speed diesel engine-centrifugal pump combination

Examples

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Effect test

Embodiment Construction

[0033] See figure 1 The casing 101 of the centrifugal pump of the pump set of the present invention is equipped with an inducer 102, an impeller 104, and a mechanical seal 105; the fluid enters the water inlet 100 of the casing 101 and then passes through the inducer 102, the impeller 104, and then the The water outlet 111 flows out; the inducer 102 and the impeller 104 are driven with the main shaft through a key; one end of the main shaft 106 is the power input end, which is fastened to the crankshaft of the diesel engine with a connecting screw through the extension shaft structure; the other end of the main shaft is connected to the inducer 102, The impeller 104 and the mechanical seal 105 are fixedly connected, and the inducer is located at the front end of the impeller. A shaft head lock nut 103 is provided at the other end of the main shaft, and the shaft head lock nut is used to axially fix the inducer and the impeller. During installation, the position of the impeller...

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Abstract

The invention relates to a stepless free speed regulating diesel engine and centrifugal pump assembly comprising a centrifugal pump, a diesel engine, a control system and an integrated base, wherein the control system comprises a rotating speed sensor, a programmable controller, an electronic speed regulator and an accelerator executor; and the accelerator executor is a mechanical speed regulator of the diesel engine, a speed regulating handle of the mechanical speed regulator is located on a rated rotating speed position and is fixed, a fuel shutoff solenoid valve of the mechanical speed regulator is a proportional solenoid valve, and the electronic speed regulator is just located on a zero position when a shutdown handle of the mechanical speed regulator is located at a shutdown position. A three-closed-loop constant-rotating-speed control scheme and an electronic accelerator driving mechanism are adopted in the stepless free speed regulating diesel engine and centrifugal pump assembly, so that a stable working mode with three working conditions including constant rotating speed, constant pressure and constant flow of a pump set is realized, the working range of the pump set is widened, and the working state of the pump seat is improved.

Description

Technical field [0001] The invention relates to a stepless free speed regulating diesel engine-centrifugal pump combination, which belongs to the field of fluid machinery and automatic control. Background technique [0002] Centrifugal pumps are the most widely used machinery by mankind, and are widely used in various aspects such as aerospace, military operations, marine engineering, petrochemicals, and water supply and drainage. The centrifugal pump works by using the impeller to rotate to make the water produce centrifugal movement. Its working principle is: when the liquid enters the casing through the impeller, the flow channel of the volute casing gradually expands, and the flow rate of the liquid gradually decreases. Part of the kinetic energy is converted into static pressure energy, so the liquid is discharged from the shell at a higher pressure. At the same time, the center of the impeller forms a vacuum due to the liquid being thrown out, and the pressure at the liquid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B63/06F02D29/04F04D9/02F04D13/02F04D29/66
CPCF02B63/06F02D29/04F04D9/02F04D13/02F04D29/661
Inventor 马玉琴吕秋洁张振华冯思涛杨沛赵宏民朱保民杨晶席悦王凤梅
Owner 西安航天泵业有限公司
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