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Logic control circuit for self-starting of multiple stand-by pumps on basis of priority selection

A logic control circuit and self-starting technology, which is applied in pump control, mechanical equipment, machine/engine, etc., can solve the problem of multiple manual interventions by operators, the self-starting backup effect of the backup pump cannot meet the expected requirements, and cannot meet the requirements of multiple backup pumps Control demand and other issues to achieve the effect of improving reliability and reducing process fluctuations

Active Publication Date: 2017-10-27
SINOPEC NINGBO ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The self-starting logic of 1 on 1 standby pump that has been widely used at present can no longer meet the control requirements of multiple standby pumps, and requires more manual intervention by the operator, so that the actual self-starting standby effect of the standby pump cannot meet the expected requirements

Method used

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  • Logic control circuit for self-starting of multiple stand-by pumps on basis of priority selection
  • Logic control circuit for self-starting of multiple stand-by pumps on basis of priority selection
  • Logic control circuit for self-starting of multiple stand-by pumps on basis of priority selection

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as Figure 2 to Figure 4 As shown, the self-starting logic control circuit of multiple standby pumps based on priority selection in the first embodiment is used to realize the self-starting logic control of 3 main operating pumps and 2 standby pumps, and the multiple standby pumps are self-starting The logic control circuit includes a priority selection module, a self-starting judgment module and a signal output module; assuming that all the main operating pumps are started from the scene, the self-starting logic control circuit is only one or several standby pumps that need to be started An alternate start command is issued; where:

[0029] The priority selection module includes a priority selection sub-module for 5 pumps Pump(i); N=3+2, that is, N=5, N 1 ≥2,N 2 ≥2, 1≤i≤5, i∈Z; that is, the number N of main operating pumps 1 = 3, the number of spare pumps N 2 = 2;

[0030] Specifically, for the first pump, that is, when i=1, the first pump is marked as Pump (...

Embodiment 2

[0064] Such as Figure 5 to Figure 7 As shown, the self-starting logic control circuit of multiple standby pumps based on priority selection in the second embodiment is used to realize the self-starting logic control of 4 main operating pumps and 4 standby pumps, and the multiple standby pumps are self-starting The logic control circuit includes a priority selection module, a self-starting judgment module and a signal output module; wherein:

[0065] The priority selection module includes a priority selection sub-module for 8 pumps Pump(i); N=4+4, that is, N=8, N 1 ≥2,N 2 ≥2, 1≤i≤8, i∈Z; that is, the number N of main operating pumps 1 = 4, the number of spare pumps N 2 = 4;

[0066] Specifically, for the first pump, that is, when i=1, the first pump is marked as Pump (1), and the priority selection submodule of the pump Pump (1) includes a first-level backup selection sub-module to a fourth-level backup selection submodule; where:

[0067]The primary standby selection su...

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Abstract

The invention relates to a logic control circuit for self-starting of multiple stand-by pumps on the basis of priority selection. The logic control circuit is used for realizing self-starting logic control of N1 main running pumps and N2 stand-by pumps. The logic control circuit for self-starting of the multiple stand-by pumps comprises a priority selection module, a self-starting judgment module and a signal output module; and the priority selection module comprises priority selection submodules of (N1+N2) pumps. The self-starting logic does not need to assign the fixed stand-by pumps, a pump device group can meet a starting and stand-by mode in an optional number, the number of the stand-by pumps is less than or equal to N2, and the same number of the stand-by pumps can be started automatically according to the number of the running pumps which fail; and when starting of a certain stand-by pump fails, another stand-by pump can also be started automatically.

Description

technical field [0001] The invention relates to a logic control circuit for self-starting of multiple standby pumps based on priority selection. Background technique [0002] As the power equipment in the process, the pump is mainly used to pressurize, transport and measure process materials, and its importance is self-evident. In some key links in the process flow, once there is a problem with the pump equipment, the process material will be interrupted, which may cause the shutdown of the device or even a serious accident. Therefore, many pump equipment in important working conditions are equipped with backup pumps. That is to say, there is a backup mode for the pump in the pump group, with the pump as the main operating pump and the pump as the backup pump, so as to effectively prevent the device from shutting down or even a vicious accident due to pump failure. [0003] When there is a problem with the main operating pump, the standby pump is automatically activated th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06
CPCF04B49/06
Inventor 刘建兵严春明汉建德王同尧孙海宇钟彦达万春月
Owner SINOPEC NINGBO ENG