A control method for a constant pressure pumping station with an auxiliary flow regulating function
A technology of flow regulation and control method, which is applied in pump control, pump stations, pumps, etc., can solve problems such as flow regulation function failure, and achieve the effects of prolonging the service life, eliminating pressure jitter, and simple and easy control methods
Active Publication Date: 2022-02-01
成都锦胜雾森环保科技有限公司 +1
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a control method for a constant pressure pump station with auxiliary flow regulation function, and solve the flow regulation function when the water supply flow regulation requirement of the constant pressure pump station is less than the applicable frequency range of the constant torque of the motor Failure problem, to achieve the purpose of eliminating the dead zone of flow regulation, and realize the real stepless flow regulation
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Embodiment Construction
[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0031] like figure 1 As shown, the embodiment of the present invention provides a constant pressure pumping station with an auxiliary flow adjustment function, the constant pressure pumping station includes a water inlet pipeline 1, a water outlet pipeline 2, a pump unit, a control system 5 and the like.
[0032] The pump set includes a main pump 3 and an auxiliary small pump 4 connected in parallel between the water inlet pipe 1 and the water outlet pipe 2. The working frequency range of the main pump 3 and the corresponding flow adjustment range are greater than the working frequency range and the corresponding flow rate of the auxiliary small pump 4. Flow adjustment range. The main pump branch and the auxiliary small pump branch in parallel in the pump group are equipped with butterfly valve A 31, check valve 32 and butterfly valve B 33, wherein th...
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The present invention provides a control method for a constant pressure pumping station with an auxiliary flow adjustment function, including: parameter setting, which is set in the control system, and enters the automatic operation state; judging the water supply demand, if it is greater than the flow threshold, it is adjusted by the main flow adjustment mode ;If it is less than the flow threshold, it will be adjusted by the auxiliary flow adjustment mode; Among them, the main flow adjustment mode: enable the main pump, the auxiliary small pump is turned off, and the flow rate is greater than the threshold; the auxiliary flow adjustment mode: turn off the main pump and the auxiliary small pump, first enable the voltage regulator Compensator, the water supply time does not exceed the set time limit; the water supply time exceeds the set time limit, start the auxiliary small pump, if the water supply demand flow is within the flow range of the auxiliary small pump, it will be adjusted by the auxiliary small pump; if the water supply demand flow is less than the auxiliary small pump The lower limit of the flow range of the pump, and the bypass branch is activated at the same time. Effectively solve the problem of water supply flow regulation failure when the flow demand is less than the lower limit of the main pump flow range, and can stabilize and regulate low-flow water supply for a long time.
Description
technical field [0001] The invention relates to the technical field of flow regulation of constant-pressure water supply equipment, in particular to a control method of a constant-pressure pumping station with an auxiliary flow regulation function. Background technique [0002] The flow adjustment range of traditional constant pressure water supply equipment is limited by the applicable frequency range of the constant torque of the motor. For example, the constant torque frequency range is 5~50HZ. When the flow adjustment demand is less than the minimum operating frequency of the motor 5HZ, the host adjustment function will fail. [0003] In the current constant pressure water supply equipment, a voltage stabilizing compensator is usually installed on the water supply pipe network to compensate the water supply demand of small flow. When the flow demand is less than the minimum operating frequency of the motor, the motor and the pump body will not start, and the pressure sta...
Claims
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IPC IPC(8): E03B11/16E03B5/00E03B7/07E03B7/09F04B23/04F04B49/20
CPCE03B11/10E03B5/00E03B7/072E03B7/075E03B7/078E03B7/09F04B23/04F04B49/20
Inventor 文林林刘阳
Owner 成都锦胜雾森环保科技有限公司