Fluid treatment protection system
By introducing pressure sensors and control units into the fluid treatment system and dynamically adjusting the pump speed, the lack of preventing cavitation in the prior art fluid treatment system is solved, and a more stable and efficient fluid treatment is achieved.
Patent Information
- Application Number
- CN202380032592.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-04-04
- Filing Date
- 2023-04-04
- Publication Date
- 2025-01-14
AI Technical Summary
The existing fluid treatment system has shortcomings in preventing cavitation in the pump, and it is impossible to effectively monitor and adjust the fluid inlet pressure, resulting in unstable pump speed and inefficient efficiency.
A fluid treatment protection system is designed, including a pressure sensor and a control unit, which dynamically adjusts the pump speed to maintain a pressure threshold, prevent cavitation, and automatically adjusts the pump speed if necessary to Reach the preset ratio.
It effectively prevents cavitation in the pump, improves the stability and efficiency of fluid treatment, ensures optimized operation of the pump speed between the minimum and maximum pressure set values, and avoids performance degradation caused by too low or too high pressure.
Smart Images
Figure CN119317591A_ABST
Abstract
Description
Background Art
[0001] A fluid handling protection system is disclosed, and in particular a system is disclosed, the system comprising: a first pump; a first pump fluid inlet pipeline; a first pump fluid outlet pipeline; a first pump drive unit, wherein the first pump drive unit is operably connected to the first pump; a first pressure sensor; and a control unit, wherein the control unit is operably connected to the first sensor and the first pump drive unit. Summary of the invention
[0002] A fluid handling protection system configured to prevent cavitation in a first pump may include: a first pump; a first pump fluid inlet pipeline; a first pump fluid outlet pipeline; a first pump drive unit, wherein the first pump drive unit is operably connected to the first pump; a first pressure sensor; and a control unit, wherein the control unit is operably connected to the first sensor and the first pump drive unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0003] Figure 1 is a block diagram of an embodiment disclosed herein.
[0004] Figure 2 is an example, non-limiting block diagram of embodiments disclosed herein. DETAILED DESCRIPTION
[0005] Before explaining any embodiment in detail, it should be understood that the embodiments are not necessarily limited to the details of the construction and component arrangement set forth in the following description or shown in the following figures in their application. These embodiments can be practiced or implemented in a variety of different ways. Moreover, it should be understood that the words and terms used in this article are for descriptive purposes and should not be considered restrictive. The use of "including", "comprising" or "having" and its variations herein is intended to cover the items listed thereafter and their equivalents and other items. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are used in a broad sense and cover direct and indirect installation, connection, support and connection.
[0006] Although directional references may be made herein when describing the accompanying drawings, such as up, down, downward, upward, rearward, bottom, front, rear, upstream, downstream, etc., for convenience, these references are made relative to the accompanying drawings (as normally viewed). These directions are not intended to be interpreted literally or to limit the present invention in any way. In addition, terms such as "first", "second", and "third" used herein are for descriptive purposes and are not intended to indicate or imply relative importance or significance.
[0007] like Figure 1 and Figure 2As shown, the system 10 may include: a first pump 12; a first pump fluid inlet line 14; a first pump fluid outlet line 16; a first pump drive unit 18, wherein the first pump drive unit 18 is operably coupled to the first pump 12; a first pressure sensor 20; and a control unit 22, wherein the control unit 22 is operably coupled to the first sensor and the first pump drive unit 18. According to certain embodiments, the system 10 may include a first fluid source 34, the first fluid source including a first fluid, wherein the first pump 12 is in fluid communication with the first fluid source 34 via the first pump fluid inlet line 14. According to certain embodiments, the system 10 may provide a first pressure sensor 20, the first pressure sensor being located within the first fluid inlet line. According to certain embodiments, the system 10 may provide a control unit 22, which, when in operation, continuously receives a first pressure signal from the first pressure sensor 20 in real time. The pressure sensor may be coupled to the control unit 22 via a first sensor connection to the control unit 42 and a second sensor connection to the control unit 44, the first sensor connection and the second sensor connection being wireless connections or Ethernet cables, and may include an analog-to-digital converter. According to certain embodiments, the system 10 may provide a control unit 22 configured to compare the first pressure signal to a first pressure threshold. In some embodiments, the first pressure threshold represents a minimum inlet pressure. According to certain embodiments, the system 10 may provide a first pressure threshold that is based on a real-time first pump 12 speed. According to certain embodiments, the system 10 may provide a control unit 22 that is configured to receive the real-time first pump 12 speed from the first pump drive unit 18, and to reduce the speed of the first pump 12 via communication with the first pump drive unit 18 based on detecting that the first pressure signal is below the first pump 12 threshold, so that the speed of the first pump 12 does not exceed the first pressure threshold. According to certain embodiments, the system 10 may provide a first pressure threshold that includes a lower first pressure setting and an upper first pressure setting, wherein the first pressure threshold is dynamic and has a first direct relationship between a maximum value at the lower first pressure setting with 0% first pump 12 speed and a maximum value at the higher first pressure setting with 100% pump speed. In some embodiments, the first direct relationship is linear. In some embodiments, the lower first pressure setting may be programmed by an operator at the control unit 22. According to certain embodiments, the system 10 can provide a higher first pressure setting that can be programmed by an operator at the control unit 22. In some embodiments, the control unit 22 is preset to a lower first pressure setting of 5 psi and an upper first pressure setting of 60 psi. In some embodiments, the first pump 12 is a gear pump.According to some embodiments, the system 10 may include a first inlet pressure generating mechanism 46, wherein the first inlet pressure generating mechanism 46 may be a lift system 10, a transfer pump, or a combination of the lift system 10 and the transfer pump. According to some embodiments, the system 10 may provide a first inlet pressure generating mechanism 46, the first inlet pressure generating mechanism is a transfer pump, wherein the transfer pump is a pneumatically actuated piston pump. In some embodiments, the system 10 of claim 1 may further include: a second pump 24; a second pump fluid inlet pipeline 26; a second pump fluid outlet pipeline 28; a second pump drive unit 30, wherein the second pump drive unit 30 is operably coupled to the second pump 24; a second pressure sensor 32; and wherein the control unit 22 is operably coupled to the second sensor and the second pump drive unit 30. According to some embodiments, the system 10 may provide a second fluid source 36 including a second fluid, wherein the second pump 24 is in fluid communication with the second fluid source 36 via the second pump fluid inlet pipeline 26. In some embodiments, the second pressure sensor 32 is located in the second fluid inlet pipeline. In some embodiments, the control unit 22 receives the second pressure signal from the second pressure sensor 32 continuously in real time when operating. According to certain embodiments, the system 10 may provide a control unit 22 configured to compare the second pressure signal with a second pressure threshold. In some embodiments, the second pressure threshold represents a minimum inlet pressure. In certain embodiments, the threshold may represent a minimum pressure to prevent cavitation from occurring in the pump. In some embodiments, the second pressure threshold is based on a real-time second pump 24 speed. According to certain embodiments, the system 10 may provide: a control unit 22 configured to receive a real-time second pump 24 speed from the second pump drive unit 30, and based on detecting that the second pressure signal is below the second pump 24 threshold, the speed of the second pump 24 is reduced via communication with the second pump drive unit 30, so that the speed of the second pump 24 does not exceed the second pressure threshold. According to certain embodiments, the system 10 may provide a second pressure threshold value that includes a lower second pressure setting and an upper second pressure setting, wherein the second pressure threshold value is dynamic and has a second direct relationship between a maximum value at the lower second pressure setting with 0% second pump 24 speed and a maximum value at the upper second pressure setting with 100% pump speed. In some embodiments, the second direct relationship is linear. In some embodiments, based on detecting that the pump fluid inlet pressure is above the threshold, the system 10 may automatically increase the pump speed of the first pump 12 or the second pump 24 to a desired pump speed, or closer to the desired pump speed, while not exceeding the minimum threshold. In some embodiments, the lower second pressure setting may be programmed by an operator at the control unit 22. In some embodiments, the upper second pressure setting may be programmed by an operator at the control unit 22.According to some embodiments, the system 10 may provide a control unit 22 that is preset to a lower second pressure setting of 5 psi and an upper second pressure setting of 60 psi. According to some embodiments, the system 10 may provide a second pump 24 that is a gear pump. According to some embodiments, the system 10 may provide a second inlet pressure generating mechanism 48, wherein the second inlet pressure generating mechanism 48 may be a lifting system 10, a transfer pump, or a combination of the lifting system 10 and the transfer pump. In some embodiments, the second inlet pressure generating mechanism 48 is a transfer pump, wherein the transfer pump is a pneumatically actuated piston pump.
[0008] According to certain embodiments, the system 10 may include: a first pump 12 and a second pump 24; a first pump fluid inlet line 14 and a second pump fluid inlet line 26; a first pump fluid outlet line 16 and a second pump fluid outlet line 28; a first pump drive unit 18 and a second pump drive unit 30, wherein the first pump drive unit 18 is operably coupled to the first pump 12 and the second pump drive unit 30 is operably coupled to the second pump drive unit 30; a first pressure sensor 20 in the first fluid inlet line and a second pressure sensor 32 in the second fluid inlet line; and a control unit 22, wherein the control unit 22 is operably coupled to the first sensor, the second pressure sensor 32, the first pump drive unit 18 and the second pump drive unit 30. Figure 2As shown, the first fluid flow direction 38 and the second fluid flow direction 40 show that the pressure sensor is located upstream of the first pump 12 and the second pump 24. In some embodiments, the system 10 may include a first fluid source 34 containing a first fluid and a second fluid source 36 containing a second fluid, wherein the first pump 12 is in fluid communication with the first fluid source 34 via the first pump fluid inlet line 14, and the second pump 24 is in fluid communication with the second fluid source 36 via the second pump fluid inlet line 26. According to some embodiments, the first fluid may include an isocyanate or a polyol, and the second fluid may include an isocyanate or a polyol. In some embodiments, the first pressure sensor 20 is located in the first fluid inlet line, and the second pressure sensor 32 is located in the second fluid inlet line. In some embodiments, the control unit 22 receives a first pressure signal from the first pressure sensor 20 and a second pressure signal from the second pressure sensor 32 in real time and continuously when operating. In some embodiments, the control unit 22 is configured to compare the first pressure signal with a first pressure threshold and compare the second pressure signal with a second pressure threshold. According to some embodiments, the first pressure threshold represents a minimum inlet pressure. According to some embodiments, the first pressure threshold is based on the real-time first pump 12 speed. In some embodiments, the control unit 22 is configured to receive the real-time first pump 12 speed from the first pump drive unit 18, and based on detecting that the first pressure signal is below the first pump 12 threshold, the speed of the first pump 12 is reduced via communication with the first pump drive unit 18 so that the pump speed does not exceed the first pressure threshold. In some embodiments, the control unit 22 is configured to reduce the speed of the second pump 24 via communication with the second pump drive unit 30 based on detecting that the first pressure signal is below the first pump 12 threshold so as to maintain a preset ratio of the first fluid through the first fluid outlet and the second fluid through the second fluid outlet. In some embodiments, the first pressure threshold includes a lower first pressure setting value and an upper first pressure setting value, wherein the first pressure threshold is dynamic and has a first direct relationship between a maximum value at the lower first pressure setting value with 0% of the first pump 12 speed and a maximum value at the upper first pressure setting value with 100% of the pump speed. In some embodiments, the first direct relationship is linear. According to some embodiments, the control unit 22 receives the second pressure signal from the second pressure sensor 32 and the first pressure signal from the first pressure sensor 20 continuously in real time when operating. In some embodiments, the control unit 22 is configured to compare the second pressure signal to a second pressure threshold and to compare the first pressure signal to a first pressure threshold. In some embodiments, the second pressure threshold represents a minimum inlet pressure.According to certain embodiments, the second pressure threshold is based on a real-time second pump 24 speed, wherein the control unit 22 is configured to receive the real-time second pump 24 speed from the second pump drive unit 30 and, based on detecting that the second pressure signal is below the second pump 24 threshold, reduce the speed of the second pump 24 via communication with the second pump drive unit 30 so that the pump speed does not exceed the second pressure threshold, wherein the control unit 22 is configured to reduce the speed of the first pump 12 via communication with the first pump drive unit 18 based on detecting that the second pressure signal is below the second pump 24 threshold so as to maintain a preset ratio of the second fluid through the second fluid outlet and the first fluid through the first fluid outlet, wherein the second pressure threshold includes a lower second pressure setting and an upper second pressure setting, wherein the second pressure threshold is dynamic and has a second direct relationship between a maximum value at the lower second pressure setting with 0% second pump 24 speed and a maximum value at the upper second pressure setting with 100% pump speed, wherein the second direct relationship is linear. In some embodiments, based on detecting a pump fluid inlet pressure above a threshold, system 10 may automatically increase the pump speed of first pump 12 or second pump 24 to a desired pump speed, or closer to the desired pump speed, while not exceeding a minimum threshold.
[0009] Descriptions of various embodiments have been given for purposes of illustration, but these descriptions are not intended to be exhaustive or limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of these embodiments, practical applications or technical improvements over technologies found in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A system comprising: First pump; a first pump fluid inlet line; a first pump fluid outlet line; a first pump drive unit, wherein the first pump drive unit is operably coupled to the first pump; a first pressure sensor; and A control unit, wherein the control unit is operably coupled to the first sensor and the first pump drive unit.
2. The system of claim 1, further comprising a first fluid source, the first fluid source comprising a first fluid, wherein The first pump is in fluid communication with the first fluid source via the first pump fluid inlet line.
3. The system of claim 2, wherein: The first pressure sensor is located in the first fluid inlet line.
4. The system of claim 1, wherein: The control unit receives the first pressure signal from the first pressure sensor in real time and continuously during operation.
5. The system of claim 4, wherein: The control unit is configured to compare the first pressure signal to a first pressure threshold.
6. The system of claim 5, wherein: The first pressure threshold represents a minimum inlet pressure.
7. The system of claim 6, wherein: The first pressure threshold is based on a real-time first pump speed.
8. The system of claim 7, wherein: The control unit is configured to receive the real-time first pump speed from the first pump drive unit, and based on detecting that the first pressure signal is below the first pump threshold, reduce the speed of the first pump via communication with the first pump drive unit so that the speed of the first pump does not exceed the first pressure threshold.
9. The system of claim 7, wherein: The first pressure threshold comprises a lower first pressure setting and an upper first pressure setting, wherein the first pressure threshold is dynamic and has a first direct relationship between a maximum value at the lower first pressure setting at 0% first pump speed and a maximum value at the upper first pressure setting at 100% pump speed.
10. The system of claim 9, wherein: The first direct relationship is linear.
11. The system of claim 9, wherein: The lower first pressure setting is programmable by an operator at the control unit.
12. The system of claim 11, wherein: The higher first pressure setting is programmable by an operator at the control unit.
13. The system of claim 12, wherein: The control unit is preset to a lower first pressure setting of 5 psi and an upper first pressure setting of 60 psi.
14. The system of claim 1, wherein: The first pump is a gear pump.
15. The system of claim 14, further comprising a first inlet pressure generating mechanism, wherein: The first inlet pressure generating mechanism can be a lifting system, a delivery pump or a combination of a lifting system and a delivery pump.