An apparatus for dampening water pump vibrations by coordinating pipe network resistance with water pump frequency

Abstract

This invention discloses a device for reducing water pump vibration by coordinating pipeline resistance and pump frequency. The device includes remote pressure gauges A and B, both connected to an input module, which in turn connects to a processor module. The processor module includes a direct output terminal and an indirect output terminal. The direct output terminal is connected to a water pump frequency converter, and the indirect output terminal is connected to an output module. The output module is connected to a throttle valve control module. This invention reduces energy loss within the variable frequency water pump, thus preventing vibration and ensuring stable operation and extended service life. By co-regulating the throttle valve and the variable frequency water pump, this invention makes the flow rate regulation of the pipeline network more flexible and reliable, avoiding the possibility of excessive vibration or even pump damage that can occur when adjusting the pipeline flow rate by changing the frequency.

Description

Technical Field

[0001] This invention belongs to the field of heating pipe network technology, specifically relating to a device for reducing water pump vibration by coordinating pipe network resistance and water pump frequency. Background Technology

[0002] A variable frequency pump is a device that affects the flow rate of a pipeline network by controlling the impeller speed. Compared with the method of directly changing the pipeline resistance to control the flow rate through a throttle valve, it is more energy-efficient, so the application of variable frequency pumps is increasing.

[0003] A water pump uses a frequency converter to control the impeller speed, thus changing the head and consequently the flow rate in the pipeline. However, the rated operating conditions also change after the pump frequency changes. If the rated operating conditions after frequency conversion deviate from the actual operating conditions in the pipeline network, it will lead to a decrease in pump efficiency, i.e., increased energy loss. The external manifestations of pump energy loss are generally reduced flow rate, increased noise, and increased vibration intensity. Therefore, when the energy loss of the pump reaches a certain level, its vibration intensity reaching level two or above will not only make it difficult for the pump to operate stably, but also shorten the service life of the frequency conversion pump and cause equipment damage.

[0004] In addition, when the efficiency of the variable frequency pump decreases, the actual operating flow rate deviates from the preset flow rate, and the control system will continuously change the pump frequency to achieve the preset flow rate.

[0005] However, such a process may cause the efficiency of the variable frequency water pump to continuously decrease, and the vibration intensity of the water pump to continuously increase, eventually leading to the damage of the water pump.

[0006] Therefore, it is particularly important to invent a device that can coordinate the changes in pump frequency with the changes in pipeline resistance to reduce pump vibration. Summary of the Invention

[0007] This invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a device for reducing water pump vibration by coordinating the pipeline resistance and the water pump frequency.

[0008] The technical solution of the present invention is: a device for reducing water pump vibration by coordinating pipeline resistance and water pump frequency, comprising a remote pressure gauge A and a remote pressure gauge B, wherein both remote pressure gauge A and remote pressure gauge B are connected to an input module, the input module is connected to a processor module, the processor module includes a direct output terminal and an indirect output terminal, the direct output terminal is connected to a water pump frequency converter, and the indirect output terminal is connected to an output module.

[0009] Furthermore, the output module is connected to the throttle valve control module.

[0010] Furthermore, the input module is also connected to a remote flow meter, which measures the flow rate of liquid entering the variable frequency water pump.

[0011] Furthermore, the output module is connected to the throttle valve opening feedback module.

[0012] Furthermore, the power supply terminal of the processor module is connected to the incoming power supply.

[0013] Furthermore, a UPS module is provided at the output end of the incoming power supply.

[0014] Furthermore, the power input output terminal is also connected to a power module, which supplies power to the electrical components.

[0015] Furthermore, the processor module includes a display control terminal, which is connected to the display screen.

[0016] Furthermore, the remote pressure gauge A is located on the inlet side of the variable frequency water pump, and the remote pressure gauge B is located on the outlet side of the variable frequency water pump.

[0017] Furthermore, the variable frequency water pump is equipped with a throttle valve on the outlet side, which controls the liquid resistance in the pipeline network.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention avoids vibration by reducing energy loss inside the variable frequency water pump, thus ensuring the stable operation and service life of the variable frequency water pump.

[0020] This invention, through the joint regulation of a throttle valve and a variable frequency water pump, makes the variable flow rate regulation of the pipeline network more flexible and reliable, avoiding the situation where the variable frequency water pump may vibrate excessively or even be damaged when relying on changing the frequency to regulate the pipeline flow rate. Attached Figure Description

[0021] Figure 1 This is a circuit connection diagram of the present invention;

[0022] Figure 2 This is a connection diagram of the input module in this invention;

[0023] Figure 3 This is a connection diagram of the output module in this invention;

[0024] Figure 4 This is a schematic diagram of the variable frequency water pump connection in this invention;

[0025] in:

[0026] 1. Variable frequency water pump 2. Remote flow meter

[0027] 3. Remote pressure gauge A 4. Return water pipe

[0028] 5. Throttling valve 6. Water supply pipe

[0029] 7. Remote pressure gauge B 8. Processor module

[0030] 9. Water pump frequency converter; 10. Incoming power supply.

[0031] 11 UPS Module 12 Power Supply Module

[0032] 13 Input Module 14 Output Module

[0033] 15 Display screen 16 Throttle valve opening feedback module

[0034] 17. Throttling valve control module. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0036] like Figures 1 to 4 As shown, a device for reducing pump vibration by coordinating pipeline resistance and pump frequency includes a remote pressure gauge A3 and a remote pressure gauge B7. Both remote pressure gauges A3 and B7 are connected to an input module 13, which is connected to a processor module 8. The processor module 8 includes a direct output terminal and an indirect output terminal. The direct output terminal is connected to a pump frequency converter 9, and the indirect output terminal is connected to an output module 14.

[0037] The output module 14 is connected to the throttle valve control module 17.

[0038] The input module 13 is also connected to a remote flow meter 2, which measures the flow rate of liquid entering the variable frequency water pump 1.

[0039] The output module 14 is connected to the throttle valve opening feedback module 16.

[0040] The power supply terminal of the processor module 8 is connected to the incoming power supply 10.

[0041] A UPS module 11 is provided at the output end of the incoming power supply 10.

[0042] The output terminal of the incoming power supply 10 is also connected to a power module 12, which provides power to the electrical components.

[0043] The processor module 8 is provided with a display control terminal, which is connected to the display screen 15.

[0044] The remote pressure gauge A3 is located on the inlet side of the variable frequency water pump 1, and the remote pressure gauge B7 is located on the outlet side of the variable frequency water pump 1.

[0045] The variable frequency water pump 1 is equipped with a throttle valve 5 on the outlet side, and the throttle valve 5 controls the liquid resistance in the pipeline network.

[0046] Specifically, in the connection structure, the inlet end of the variable frequency water pump 1 is connected to the return water pipe 4, the outlet end of the variable frequency water pump 1 is connected to the water supply pipe 6, and the throttle valve 5 is installed in the water supply pipe 6.

[0047] Preferably, the remote flow meter 2 and the remote pressure meter A3 are installed in the return water pipe 4, and the remote pressure meter B7 is installed in the water supply pipe 6.

[0048] The throttle valve 5 has flanges at both ends for connecting to the water supply pipe 6.

[0049] Another embodiment

[0050] A device for reducing pump vibration by coordinating pipeline resistance and pump frequency includes a remote pressure gauge A3 and a remote pressure gauge B7. Both remote pressure gauges A3 and B7 are connected to an input module 13, which is connected to a processor module 8. The processor module 8 includes a direct output terminal and an indirect output terminal. The direct output terminal is connected to a pump frequency converter 9, and the indirect output terminal is connected to an output module 14.

[0051] The output module 14 is connected to the throttle valve control module 17.

[0052] The input module 13 is also connected to a remote flow meter 2, which measures the flow rate of liquid entering the variable frequency water pump 1.

[0053] The output module 14 is connected to the throttle valve opening feedback module 16.

[0054] The power supply terminal of the processor module 8 is connected to the incoming power supply 10.

[0055] A UPS module 11 is provided at the output end of the incoming power supply 10.

[0056] The output terminal of the incoming power supply 10 is also connected to a power module 12, which provides power to the electrical components.

[0057] The processor module 8 is provided with a display control terminal, which is connected to the display screen 15.

[0058] The remote pressure gauge A3 is located on the inlet side of the variable frequency water pump 1, and the remote pressure gauge B7 is located on the outlet side of the variable frequency water pump 1.

[0059] The variable frequency water pump 1 is equipped with a throttle valve 5 on the outlet side, and the throttle valve 5 controls the liquid resistance in the pipeline network.

[0060] Specifically, in the connection structure, the inlet end of the variable frequency water pump 1 is connected to the return water pipe 4, the outlet end of the variable frequency water pump 1 is connected to the water supply pipe 6, and the throttle valve 5 is installed in the water supply pipe 6.

[0061] Preferably, the remote flow meter 2 and the remote pressure meter A3 are installed in the return water pipe 4, and the remote pressure meter B7 is installed in the water supply pipe 6.

[0062] The throttle valve 5 has flanges at both ends for connecting to the water supply pipe 6.

[0063] Specifically, the output module 14 is a Siemens AQ04 module, and the throttle valve control module 17 is connected to pin 0 of the output module 14.

[0064] Specifically, the output module 13 is a Siemens AE08 module, the remote flow meter 2 is connected to pin 0 of the output module 13, the remote pressure gauge A3 is connected to pin 1 of the output module 13, the remote pressure gauge B7 is connected to pin 2 of the output module 13, and the throttle valve opening feedback module 16 is connected to pin 3 of the output module 13.

[0065] Specifically, the output module 13 is equipped with a circuit breaker QF6 at its input terminal, the output module 14 is equipped with a circuit breaker QF7 at its input terminal, and the display screen 15 is equipped with a circuit breaker QF8 at its input terminal.

[0066] Specifically, a circuit breaker QF3 is provided on the output side of the UPS module 11.

[0067] Specifically, a circuit breaker QF4 is provided on the access side of the power module 12.

[0068] Specifically, a circuit breaker QF5 is provided on the power supply side of the processor module 8.

[0069] The working process of this invention is as follows:

[0070] When it is necessary to change the pipeline flow

[0071] First, calculate the frequency corresponding to the variable frequency pump 1 at this flow rate. After that, change it to a new frequency through the pump frequency converter 9.

[0072] Then, after the adjustment is completed, the flow data fed back from the remote flow meter 2 is received and compared.

[0073] Next, the throttle valve 5 is adjusted a second time to make the feedback data in the remote flow meter 2 consistent with the preset flow rate.

[0074] Finally, the data fed back by remote pressure gauges A3 and B7 are analyzed to obtain the pump operating efficiency and determine whether the pump is operating normally.

[0075] This invention avoids vibration by reducing energy loss inside the variable frequency water pump, thus ensuring the stable operation and service life of the variable frequency water pump.

[0076] This invention, through the joint regulation of a throttle valve and a variable frequency water pump, makes the variable flow rate regulation of the pipeline network more flexible and reliable, avoiding the situation where the variable frequency water pump may vibrate excessively or even be damaged when relying on changing the frequency to regulate the pipeline flow rate.

Claims

1. A device for reducing water pump vibration by coordinating pipe network resistance and water pump frequency, comprising a remote pressure gauge A (3), a remote pressure gauge B (7), characterized in that: The remote pressure gauge A (3) and the remote pressure gauge B (7) are connected to the input module (13), the input module (13) is connected to the processor module (8), the processor module (8) comprises a direct output end and an indirect output end, the direct output end is connected with the water pump frequency converter (9), and the indirect output end is connected with the output module (14); The output module (14) is connected with the throttle valve control module (17); The input module (13) is also connected with the remote flow meter (2), and the remote flow meter (2) measures the liquid flow entering the variable frequency water pump (1); The output module (14) is connected with the throttle valve opening feedback module (16); The liquid inlet end of the variable frequency water pump (1) is communicated with the water return pipeline (4), the liquid outlet end of the variable frequency water pump (1) is communicated with the water supply pipeline (6), and the throttle valve (5) is arranged in the water supply pipeline (6); The remote flow meter (2) and the remote pressure gauge A (3) are arranged in the water return pipeline (4), and the remote pressure gauge B (7) is arranged in the water supply pipeline (6); The output module (14) is a Siemens AQ04 module, and the throttle valve control module (17) is connected with the 0th pin of the output module (14); The output module (13) is a Siemens AE08 module, the remote flow meter (2) is connected with the 0th pin of the output module (13), the remote pressure gauge A (3) is connected with the 1st pin of the output module (13), the remote pressure gauge B (7) is connected with the 2nd pin of the output module (13), and the throttle valve opening feedback module (16) is connected with the 3rd pin of the output module (13).

2. A device for reducing water pump vibrations by coordinating the resistance of the pipe network with the frequency of the water pump according to claim 1, characterized in that: The power supply end of the processor module (8) is connected with the incoming line power supply (10).

3. A device for reducing water pump vibrations by coordinating the resistance of the pipe network with the frequency of the water pump according to claim 2, characterized in that: A UPS module (11) is arranged at the output end of the incoming line power supply (10).

4. A device for reducing water pump vibrations by coordinating the resistance of the pipe network with the frequency of the water pump according to claim 3, characterized in that: The incoming line power supply (10) is also connected with a power supply module (12), and the power supply module (12) supplies power to electrical elements.

5. A device for reducing water pump vibrations by coordinating the resistance of the pipe network with the frequency of the water pump according to claim 1, characterized in that: The processor module (8) is provided with a display control end, and the display control end is connected with a display screen (15).

6. A device for reducing water pump vibrations by coordinating the resistance of the pipe network with the frequency of the water pump according to claim 1, characterized in that: The remote pressure gauge A (3) is located on the liquid inlet side of the variable frequency water pump (1), and the remote pressure gauge B (7) is located on the liquid outlet side of the variable frequency water pump (1).

7. A device for reducing water pump vibrations by coordinating the resistance of the pipe network with the frequency of the water pump according to claim 1, characterized in that: The liquid outlet side of the variable frequency water pump (1) is provided with a throttle valve (5), and the throttle valve (5) controls the liquid resistance in the pipe network.

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