CN117823464A - Oil return mechanism of oil inlet and outlet balance type electric control water pump - Google Patents

Abstract

The present invention relates to the technical field of water pumps, and specifically discloses an oil return mechanism of an oil-inlet and oil-outlet balanced electric-controlled water pump, comprising a water pump body, an oil return pipeline and an oil return assembly. After the second reflux hole on the movable frame overlaps with the first reflux hole on the fixed frame, the automatic control valve inside the movable frame is controlled to open, so that the liquid inside the water inlet pipe or the water outlet pipe can circulate with each other through the oil return pipeline, thereby balancing the liquid pressure at the water inlet pipe and the water outlet pipe, which can improve the efficiency and performance of the pump. When the inlet and outlet pressures are balanced, the inertial force of the liquid flow is reduced, and the energy conversion inside the pump body is more efficient, reducing energy waste. At the same time, pressure balance can also reduce the vibration and noise of the pump body and extend the service life of the pump. In addition, the liquid pressure at the water inlet pipe and the water outlet pipe is refluxed to different degrees according to the degree of overlap between the second reflux hole on the movable frame and the first reflux hole on the fixed frame.

Description

An oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump

Technical Field

The invention relates to the technical field of water pumps, and in particular to an oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump.

Background technique

The inlet and outlet oil balanced electric control water pump is a water pump that achieves inlet and outlet oil balance through electric control technology. The water pump is usually composed of inlet and outlet pipes and a pump body. The impeller in the pump body rotates to draw liquid from the inlet into the pump body and then discharges it through the outlet. However, the rotation of the impeller generates the inertial force of the liquid flow, resulting in an inlet and outlet pressure difference, which causes a decrease in efficiency and energy waste.

In addition, when the water pump is transporting oil in and out, the liquid pressure at the water inlet and outlet pipes cannot be detected, analyzed and processed, which will cause the water pump's oil inlet and outlet balance state to fail to respond in time, affecting the normal operation of the water pump's oil return mechanism.

Therefore, we proposed an oil return mechanism for an oil-inlet and oil-outlet balanced electric-controlled water pump.

Summary of the invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an oil return mechanism of an oil-inlet and oil-outlet balanced electric-controlled water pump, in order to solve the above-mentioned technical defects.

To achieve the above objectives, the present invention is implemented through the following technical solutions: an oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump, comprising:

A water pump body, wherein a water inlet pipe is arranged on one side of the water pump body, and a water outlet pipe is also arranged on the other side of the water pump body;

The oil return pipeline, the tops of the water inlet pipe and the water outlet pipe are all fixedly provided with connecting seats, and the oil return pipeline is fixedly provided between the two connecting seats, and an oil return valve is also fixedly provided at one end of the oil return pipeline close to the water outlet pipe;

Oil return assembly: an oil return assembly is arranged inside the oil return pipeline, and the pressure at the water inlet pipe and the water outlet pipe is balanced by the oil return assembly;

The oil return assembly includes an oil return pipeline and a control frame, two oil return pipelines are arranged inside the oil return pipeline, and the control frames are arranged at opposite ends of the two oil return pipelines, the opposite ends of the two oil return pipelines are respectively communicated with the inside of the water outlet pipe and the water inlet pipe, and the insides of the two control frames are respectively communicated with the inside of the water outlet pipe and the water inlet pipe, a mobile frame is slidably arranged inside the control frame, and a movable frame is fixedly arranged on one side of the mobile frame, a fixed plate is also fixedly arranged inside the control frame, and a fixed frame is fixedly arranged on one side of the fixed plate, the inner wall of the movable frame is slidably connected to the surface of the fixed frame, the first return hole is arranged on both sides of the fixed frame, and the second return hole is arranged on both sides of the movable frame;

A processor is also provided inside the oil return pipeline, and the processor is respectively connected to the pressure analysis module, the pressure balance module and the controller in communication;

The pressure analysis module is used to collect and analyze the liquid pressure data at the water inlet pipe and the water outlet pipe, and determine the pressure balance state of the liquid pressure at the water inlet pipe and the water outlet pipe;

The pressure balance module is used to detect and analyze the operating status of the return flow components inside the return oil pipeline after the liquid pressure at the water inlet pipe and the water outlet pipe is processed by the return oil balance;

The controller is used to control the opening and closing of the automatic control valve inside the mobile frame when balancing the liquid pressure at the water inlet pipe and the water outlet pipe.

Furthermore, automatic control valves are fixedly arranged on both sides of the interior of the movable frame, and the interiors of the two automatic control valves are respectively connected to the interior of the control frame and the oil return pipeline.

Furthermore, the interior of the fixed frame is communicated with the interior of the oil return pipeline, an automatic damping telescopic rod is fixedly provided on the top of the inner wall of the fixed frame, and the output end of the automatic damping telescopic rod is fixedly connected to the top of the inner wall of the movable frame.

Furthermore, a damping controller is fixedly arranged on the top of the inner wall of the fixing frame, and the interior of the damping controller is electrically connected to the interior of the automatic damping telescopic rod.

Furthermore, the specific process of the pressure analysis module determining the liquid pressure balance state at the water inlet pipe and the water outlet pipe includes the following steps:

Step S1, after liquid is input into the water inlet pipe, the liquid enters the water outlet pipe through the inside of the water pump body, and the liquid squeezes the moving frames inside the two control frames to slide;

Step S2, the displacement value of the mobile rack is obtained in real time and marked as WY. The displacement value of the mobile rack can be directly obtained by the displacement sensor arranged on the inner wall of the control rack, and the displacement detection threshold WYm is obtained through the storage module; it should be noted that the displacement detection threshold is a preset value for measuring the liquid pressure, and the value of the displacement detection threshold is much smaller than the value of the delivery threshold. Therefore, the displacement detection threshold is only used for balance analysis of liquid pressure, and the time when the displacement value WY increases to the displacement detection threshold WYm is marked as the detection time, and the time from the time when the liquid enters the water inlet pipe to the detection time is obtained and marked as the detection time JS;

Step S3, mark the ratio of the displacement detection threshold WYm to the detection time JS as the balance coefficient ZY; it should be noted that the balance coefficient is a numerical value indicating the magnitude of the liquid impact on the mobile frame. The larger the balance coefficient, the greater the liquid impact on the mobile frame and the greater the liquid pressure. The balance coefficient threshold ZYmax is obtained through the storage module, and the balance coefficient ZY is compared with the balance coefficient threshold ZYmax.

Furthermore, the comparison method of the balance coefficient ZY and the balance coefficient threshold ZYmax is as follows:

If the balance coefficient ZY is less than the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid does not meet the reflux standard, and the pressure analysis module sends a normal detection signal to the processor;

If the balance coefficient ZY ≥ the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid meets the reflux standard, and the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the oil return valve to open, thereby performing reflux balance processing on the liquid pressure at the water outlet pipe through the oil return pipeline;

Step S4, after the processor receives the normal detection signal, the mobile rack continues to rise, and the displacement reflux threshold WYn is obtained through the storage module. If the displacement value WY of the mobile rack increases to WYn, the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the return oil valve to open, thereby performing reflux balancing on the liquid pressure at the water outlet pipe through the return oil pipeline.

Furthermore, the process of the pressure balance module detecting and analyzing the operating status of the return flow component inside the return oil pipeline includes the following steps:

Step S5, after the liquid is input into the water inlet pipe, the liquid enters the water outlet pipe through the inside of the water pump body, and then enters the inside of the two control racks at both ends of the oil return pipe. The moving racks inside the two control racks are squeezed by the liquid pressure and move upward;

Step S6, simultaneously obtaining the displacement values of the two moving racks, obtaining the displacement detection threshold WYm through the storage module, marking the time when the displacement values of the two moving racks reach the displacement detection threshold as the cutoff time JZ, selecting several time points between the time when the liquid enters the water inlet pipe and the cutoff time and marking them as T, T=1, 2, ..., n, where n is a positive integer;

Step S7, obtaining the absolute value of the displacement difference between the two moving frames at time point T and marking it as the displacement offset value PLt, obtaining the displacement deviation threshold PLtmax through the storage module, and marking the time point when PLt is less than PLtmax as a reasonable offset point;

Step S8, obtain the number of reasonable offset points and mark them as m, mark the ratio between m and n as the reasonable deviation coefficient PL, the reasonable deviation coefficient is a numerical value indicating the degree of synchronization of the displacement of the two mobile frames, obtain the reasonable deviation coefficient threshold PLmin through the storage module, and compare the reasonable deviation coefficient PL with the reasonable deviation coefficient threshold PLmin.

Furthermore, the comparison method of the reasonable deviation coefficient PL and the reasonable deviation coefficient threshold PLmin is as follows:

If PL ≥ PLmin, it is determined that the operating state of the reflux component is normal, and the pressure balance module sends a normal operation signal to the processor;

If PL＜PLmin, the operating state of the reflux component is determined to be abnormal, and the pressure balance module sends an abnormal operation signal to the processor. After receiving the abnormal operation signal, the processor closes the automatic control valve inside the mobile frame on the side of the abnormal operation, and uses the control frame on the other side to perform independent reflux balancing processing.

The beneficial effects achieved by the present invention using the above structure are as follows:

1. In the present invention, the liquid pressure at the water inlet pipe or the water outlet pipe directly acts on the movable frame, and the liquid pressure is used to push the movable frame to move inside the control frame, and the movable frame drives the movable frame to slide on the fixed frame until the second reflux hole on the movable frame coincides with the first reflux hole on the fixed frame, and the automatic control valve inside the movable frame is controlled to open, so that the liquid inside the water inlet pipe or the water outlet pipe can circulate with each other through the oil return pipeline, thereby balancing the liquid pressure at the water inlet pipe and the water outlet pipe, which can improve the efficiency and performance of the pump. When the inlet and outlet pressures are balanced, the inertial force of the liquid flow is reduced, the energy conversion inside the pump body is more efficient, and the waste of energy is reduced. At the same time, the pressure balance can also reduce the vibration and noise of the pump body and extend the service life of the pump. In addition, according to the degree of overlap between the second reflux hole on the movable frame and the first reflux hole on the fixed frame, the liquid pressure at the water inlet pipe and the water outlet pipe is refluxed to different degrees.

2. In the present invention, the pressure analysis module is used to detect and analyze the pressure balance state of the liquid processed by the water inlet pipe and the water outlet pipe, and the balance coefficient is determined and analyzed according to the displacement value of the moving frame inside the two control frames. In the event of abnormal operation, it can also work independently through a single oil return pipeline. At the same time, it can also avoid the situation in which the output pressure is inaccurate during abnormal operation, resulting in continuous inflow of liquid for pressurization and damage to the water pump body.

3. In the present invention, the operating status of the reflux component inside the return oil pipeline is detected and analyzed through the pressure balance module, and the displacement value and displacement duration of the mobile frame inside the two control frames are detected, determined and analyzed to obtain a reasonable deviation coefficient threshold value, and then the operating status of the reflux component is determined according to the deviation coefficient threshold value. The pressure balance module sends an abnormal operation signal to the processor. After the processor receives the abnormal operation signal, it closes the automatic control valve inside the mobile frame on the side of the abnormal operation, and uses the control frame on the other side to perform independent reflux balancing processing.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

FIG1 is a schematic diagram of an oil return mechanism structure of an oil inlet and outlet balanced electronically controlled water pump according to an embodiment of the present invention;

FIG2 is a schematic diagram of the internal structure of the oil return pipeline according to an embodiment of the present invention;

FIG3 is a schematic diagram of the internal structure of a control frame according to an embodiment of the present invention;

FIG. 4 is a system principle block diagram of a pressure analysis module and a pressure balance module according to an embodiment of the present invention.

In the figure, 1. water pump body; 2. water inlet pipe; 3. water outlet pipe; 4. oil return pipe; 5. connecting seat; 6. oil return valve; 7. oil return pipeline; 8. control frame; 9. mobile frame; 10. movable frame; 11. fixed plate; 12. fixed frame; 13. first reflux hole; 14. second reflux hole; 15. automatic control valve; 16. automatic damping telescopic rod; 17. damping controller.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Example 1

Please refer to FIG. 1 to FIG. 4 , an oil return mechanism of an oil inlet and outlet balanced electric controlled water pump includes:

A water pump body 1, a water inlet pipe 2 is provided on one side of the water pump body 1, and a water outlet pipe 3 is also provided on the other side of the water pump body 1;

The oil return pipe 4, the tops of the water inlet pipe 2 and the water outlet pipe 3 are fixedly provided with a connecting seat 5, and the oil return pipe 4 is fixedly provided between the two connecting seats 5, and an oil return valve 6 is also fixedly provided at one end of the oil return pipe 4 close to the water outlet pipe 3;

An oil return assembly is provided inside the oil return pipe 4. The oil return assembly is used to balance the pressure at the water inlet pipe 2 and the water outlet pipe 3, thereby reducing the inertial force of the liquid flow, thereby making the energy conversion inside the water pump body 1 more efficient and reducing energy waste.

As a further explanation of the scheme of the present invention, the oil return assembly includes an oil return pipeline 7 and a control frame 8, two oil return pipelines 7 are arranged inside the return oil pipeline 4, and control frames 8 are arranged at opposite ends of the two oil return pipelines 7, the opposite ends of the two oil return pipelines 7 are respectively connected to the inside of the water outlet pipe 3 and the water inlet pipe 2, and the insides of the two control frames 8 are respectively connected to the inside of the water outlet pipe 3 and the water inlet pipe 2, wherein one end of the two oil return pipelines 7 and one side of the two control frames 8 are respectively provided with a one-way valve, the liquid flow direction of the one-way valve at one end of the oil return pipeline 7 is from inside to outside, and the liquid flow direction of the one-way valve on one side of the control frame 8 is from outside to inside.

Further, a movable frame 9 is slidably disposed inside the control frame 8, and a movable frame 10 is fixedly disposed on one side of the movable frame 9, a fixed plate 11 is also fixedly disposed inside the control frame 8, and a fixed frame 12 is fixedly disposed on one side of the fixed plate 11, an inner wall of the movable frame 10 is slidably connected to a surface of the fixed frame 12, first reflow holes 13 are disposed on both sides of the fixed frame 12, and second reflow holes 14 are disposed on both sides of the movable frame 10;

Automatic control valves 15 are fixedly arranged on both sides of the interior of the mobile frame 9, and the interiors of the two automatic control valves 15 are respectively connected to the interiors of the control frame 8 and the oil return pipeline 7;

The interior of the fixed frame 12 is connected to the interior of the oil return pipeline 7, an automatic damping telescopic rod 16 is fixedly provided on the top of the inner wall of the fixed frame 12, and the output end of the automatic damping telescopic rod 16 is fixedly connected to the top of the inner wall of the movable frame 10, a damping controller 17 is fixedly provided on the top of the inner wall of the fixed frame 12, and the interior of the damping controller 17 is electrically connected to the interior of the automatic damping telescopic rod 16.

It should be noted that when the pressure at the water inlet pipe 2 and the water outlet pipe 3 is balanced, the liquid pressure at the water inlet pipe 2 or the water outlet pipe 3 directly acts on the movable frame 9, and the liquid pressure is used to push the movable frame 9 to move inside the control frame 8, and the movable frame 9 drives the movable frame 10 to slide on the fixed frame 12 until the second reflux hole 14 on the movable frame 10 and the first reflux hole 13 on the fixed frame 12 overlap, and then the automatic control valve 15 inside the movable frame 9 is controlled to open, so that the liquid inside the water inlet pipe 2 or the water outlet pipe 3 can be returned to the oil return port 11. The pipelines 7 are circulated with each other, thereby balancing the liquid pressure at the water inlet pipe 2 and the water outlet pipe 3, which can improve the efficiency and performance of the pump. When the inlet and outlet pressures are balanced, the inertial force of the liquid flow is reduced, the energy conversion inside the pump body is more efficient, and energy waste is reduced. At the same time, pressure balance can also reduce the vibration and noise of the pump body and extend the service life of the pump. In addition, through the degree of overlap between the second reflux hole 14 on the movable frame 10 and the first reflux hole 13 on the fixed frame 12, the liquid pressure at the water inlet pipe 2 and the water outlet pipe 3 is refluxed to different degrees.

Example 2

As a further explanation of the present invention, a processor is also provided inside the oil return pipeline 4, and the processor is respectively connected to the pressure analysis module, the pressure balance module and the controller in communication;

The pressure analysis module is used to collect and analyze the liquid pressure data at the water inlet pipe 2 and the water outlet pipe 3, and determine the pressure balance state of the liquid pressure at the water inlet pipe 2 and the water outlet pipe 3;

Used to detect and analyze the operating status of the reflux components inside the oil return pipeline 4 after the liquid pressure at the water inlet pipe 2 and the water outlet pipe 3 has been processed by oil return balance;

The controller is used to control the opening and closing of the automatic control valve 15 inside the mobile frame 9 when balancing the liquid pressure at the water inlet pipe 2 and the water outlet pipe 3.

Furthermore, the specific process of the pressure analysis module determining the liquid pressure equilibrium state at the water inlet pipe 2 and the water outlet pipe 3 includes the following steps:

Step S1, after liquid is input into the water inlet pipe 2, the liquid enters the water outlet pipe 3 through the inside of the water pump body 1, and the liquid squeezes the moving frames 9 inside the two control frames 8 to slide;

Step S2, the displacement value of the mobile frame 9 is obtained in real time and marked as WY. The displacement value of the mobile frame 9 can be directly obtained by the displacement sensor arranged on the inner wall of the control frame 8, and the displacement detection threshold WYm is obtained through the storage module; it should be noted that the displacement detection threshold is a preset value for measuring the liquid pressure, and the value of the displacement detection threshold is much smaller than the value of the delivery threshold. Therefore, the displacement detection threshold is only used for balance analysis of the liquid pressure, and the time when the displacement value WY increases to the displacement detection threshold WYm is marked as the detection time, and the time from the time when the liquid enters the water inlet pipe 2 to the detection time is obtained and marked as the detection time JS;

Step S3, mark the ratio of the displacement detection threshold WYm to the detection time JS as the balance coefficient ZY; it should be noted that the balance coefficient is a value indicating the magnitude of the liquid impact on the mobile frame 9. The larger the balance coefficient, the greater the liquid impact on the mobile frame 9 and the greater the liquid pressure. The balance coefficient threshold ZYmax is obtained through the storage module, and the balance coefficient ZY is compared with the balance coefficient threshold ZYmax:

If the balance coefficient ZY is less than the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid does not meet the reflux standard, and the pressure analysis module sends a normal detection signal to the processor;

If the balance coefficient ZY ≥ the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid meets the reflux standard, and the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the oil return valve 6 to open, thereby performing reflux balance processing on the liquid pressure at the water outlet pipe 3 through the oil return pipeline 4;

Step S4, after the processor receives the normal detection signal, the mobile rack 9 continues to rise, and the displacement reflux threshold WYn is obtained through the storage module. If the displacement value WY of the mobile rack 9 increases to WYn, the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the return oil valve 6 to open, thereby performing reflux balancing on the liquid pressure at the water outlet pipe 3 through the return oil pipeline 4.

Furthermore, the process of the pressure balance module detecting and analyzing the operating status of the return flow component inside the return oil pipeline 4 includes the following steps:

Step S5, after the liquid is input into the water inlet pipe 2, the liquid enters the water outlet pipe 3 through the inside of the water pump body 1, and the liquid enters the inside of the two control frames 8 at both ends of the oil return pipe 4, and the moving frames 9 inside the two control frames 8 are squeezed by the liquid pressure and move upward;

Step S6, simultaneously obtain the displacement values of the two moving racks 9, obtain the displacement detection threshold WYm through the storage module, mark the time when the displacement values of the two moving racks 9 reach the displacement detection threshold as the cutoff time JZ, select several time points between the time when the liquid enters the water inlet pipe 2 and the cutoff time and mark them as T, T=1,2,...,n, where n is a positive integer;

Step S7, obtaining the absolute value of the displacement difference between the two moving frames 9 at time point T and marking it as the displacement offset value PLt, obtaining the displacement deviation threshold PLtmax through the storage module, and marking the time point when PLt is less than PLtmax as a reasonable offset point;

Step S8, obtain the number of reasonable offset points and mark it as m, mark the ratio between m and n as the reasonable deviation coefficient PL, the reasonable deviation coefficient is a value indicating the degree of synchronization of the displacement of the two mobile frames 9, obtain the reasonable deviation coefficient threshold PLmin through the storage module, and compare the reasonable deviation coefficient PL with the reasonable deviation coefficient threshold PLmin:

If PL ≥ PLmin, it is determined that the operating state of the reflux component is normal, and the pressure balance module sends a normal operation signal to the processor;

If PL＜PLmin, it is determined that the operating state of the reflux component is abnormal, and the pressure balance module sends an abnormal operation signal to the processor. After receiving the abnormal operation signal, the processor closes the automatic control valve 15 inside the moving frame 9 on the side of the abnormal operation, and uses the control frame 8 on the other side to perform independent reflux balancing processing.

Example 3

This embodiment also specifically discloses a method for using an oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump, which specifically includes the following steps:

Step 1: When balancing the pressure at the water inlet pipe 2 and the water outlet pipe 3, the liquid pressure at the water inlet pipe 2 or the water outlet pipe 3 directly acts on the movable frame 9, and the liquid pressure is used to push the movable frame 9 to move inside the control frame 8, and the movable frame 9 drives the movable frame 10 to slide on the fixed frame 12 until the second reflux hole 14 on the movable frame 10 and the first reflux hole 13 on the fixed frame 12 coincide with each other, and then the automatic control valve 15 inside the movable frame 9 is controlled to open, so that the liquid inside the water inlet pipe 2 or the water outlet pipe 3 can circulate with each other through the oil return pipeline 7, thereby balancing the liquid pressure at the water inlet pipe 2 and the water outlet pipe 3;

Step 2: Use the pressure analysis module to determine the liquid pressure balance state at the water inlet pipe 2 and the water outlet pipe 3, and compare the balance coefficient ZY with the balance coefficient threshold ZYmax:

If the balance coefficient ZY is less than the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid does not meet the reflux standard, and the pressure analysis module sends a normal detection signal to the processor;

If the balance coefficient ZY ≥ the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid meets the reflux standard, and the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the oil return valve 6 to open, thereby performing reflux balance processing on the liquid pressure at the water outlet pipe 3 through the oil return pipeline 4;

Step 3: Use the pressure balance module to detect and analyze the operating status of the return oil pipeline 4 internal reflux component, obtain the number of reasonable offset points and mark them as m, mark the ratio between m and n as the reasonable deviation coefficient PL, the reasonable deviation coefficient is a value indicating the degree of synchronization of the displacement of the two mobile racks 9, obtain the reasonable deviation coefficient threshold PLmin through the storage module, and compare the reasonable deviation coefficient PL with the reasonable deviation coefficient threshold PLmin:

If PL ≥ PLmin, it is determined that the operating state of the reflux component is normal, and the pressure balance module sends a normal operation signal to the processor;

If PL＜PLmin, it is determined that the operating state of the reflux component is abnormal, and the pressure balance module sends an abnormal operation signal to the processor. After receiving the abnormal operation signal, the processor closes the automatic control valve 15 inside the moving frame 9 on the side of the abnormal operation, and uses the control frame 8 on the other side to perform independent reflux balancing processing.

Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims (8)

1. An oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump, characterized by comprising: A water pump body (1), wherein a water inlet pipe (2) is provided on one side of the water pump body (1), and a water outlet pipe (3) is also provided on the other side of the water pump body (1); An oil return pipe (4), wherein a connection seat (5) is fixedly provided at the top of each of the water inlet pipe (2) and the water outlet pipe (3), and an oil return pipe (4) is fixedly provided between the two connection seats (5), and an oil return valve (6) is also fixedly provided at one end of the oil return pipe (4) close to the water outlet pipe (3); An oil return assembly, wherein the oil return pipeline (4) is provided with an oil return assembly, and the pressure at the water inlet pipe (2) and the water outlet pipe (3) is balanced by the oil return assembly; The oil return assembly comprises an oil return pipeline (7) and a control frame (8); two oil return pipelines (7) are arranged inside the oil return pipeline (4); and the control frames (8) are arranged at opposite ends of the two oil return pipelines (7); the opposite ends of the two oil return pipelines (7) are respectively communicated with the inside of the water outlet pipe (3) and the water inlet pipe (2); and the insides of the two control frames (8) are respectively communicated with the inside of the water outlet pipe (3) and the water inlet pipe (2); a movable frame (9) is slidably arranged inside the control frame (8); and a movable frame (10) is fixedly arranged on one side of the movable frame (9); a fixed plate (11) is also fixedly arranged inside the control frame (8); and a fixed frame (12) is fixedly arranged on one side of the fixed plate (11); the inner wall of the movable frame (10) is slidably connected to the surface of the fixed frame (12); first return holes (13) are arranged on both sides of the fixed frame (12); and second return holes (14) are arranged on both sides of the movable frame (10); A processor is also provided inside the oil return pipeline (4), and the processor is communicatively connected to the pressure analysis module, the pressure balance module and the controller respectively; The pressure analysis module is used to collect and analyze the acquired liquid pressure data at the water inlet pipe (2) and the water outlet pipe (3), and determine the pressure balance state of the liquid pressure at the water inlet pipe (2) and the water outlet pipe (3); The pressure balancing module is used to detect and analyze the operating state of the internal reflux components of the oil return pipeline (4) after the liquid pressure at the water inlet pipe (2) and the water outlet pipe (3) has been processed by oil return balancing; The controller is used to control the opening and closing of the automatic control valve (15) inside the mobile frame (9) when balancing the liquid pressure at the water inlet pipe (2) and the water outlet pipe (3). 2. The oil return mechanism of an oil-inlet and oil-outlet balanced electric-controlled water pump according to claim 1 is characterized in that automatic control valves (15) are fixedly arranged on both sides of the interior of the movable frame (9), and the interiors of the two automatic control valves (15) are respectively connected to the interiors of the control frame (8) and the oil return pipeline (7). 3. The oil return mechanism of an oil-inlet and oil-outlet balanced electric-controlled water pump according to claim 1 is characterized in that the interior of the fixed frame (12) is connected to the interior of the oil return pipeline (7), an automatic damping telescopic rod (16) is fixedly provided on the top of the inner wall of the fixed frame (12), and the output end of the automatic damping telescopic rod (16) is fixedly connected to the top of the inner wall of the movable frame (10). 4. The oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump according to claim 3, characterized in that a damping controller (17) is fixedly provided on the top of the inner wall of the fixing frame (12), and the interior of the damping controller (17) is electrically connected to the interior of the automatic damping telescopic rod (16). 5. The oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump according to claim 1 is characterized in that the specific process of the pressure analysis module determining the liquid pressure balance state at the water inlet pipe (2) and the water outlet pipe (3) comprises the following steps: Step S1, after liquid is input into the water inlet pipe (2), the liquid enters the water outlet pipe (3) through the inside of the water pump body (1), and the liquid squeezes the moving frames (9) inside the two control frames (8) to slide; Step S2, obtaining the displacement value of the moving frame (9) in real time and marking it as WY. The displacement value of the moving frame (9) can be directly obtained by a displacement sensor arranged on the inner wall of the control frame (8), and the displacement detection threshold WYm is obtained through the storage module. It should be noted that the displacement detection threshold is a preset value for measuring the magnitude of liquid pressure. The value of the displacement detection threshold is much smaller than the value of the delivery threshold. Therefore, the displacement detection threshold is only used for balance analysis of liquid pressure. The time when the displacement value WY increases to the displacement detection threshold WYm is marked as the detection time. The time from the time when the liquid enters the water inlet pipe (2) to the detection time is obtained and marked as the detection time JS. Step S3, marking the ratio of the displacement detection threshold value WYm to the detection time JS as the balance coefficient ZY; it should be noted that the balance coefficient is a value indicating the magnitude of the liquid impact on the mobile frame (9), and the larger the balance coefficient, the greater the liquid impact on the mobile frame (9), and the greater the liquid pressure. The balance coefficient threshold value ZYmax is obtained through the storage module, and the balance coefficient ZY is compared with the balance coefficient threshold value ZYmax. 6. The oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump according to claim 5, characterized in that: the comparison method of the balance coefficient ZY and the balance coefficient threshold ZYmax is as follows: If the balance coefficient ZY is less than the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid does not meet the reflux standard, and the pressure analysis module sends a normal detection signal to the processor; If the balance coefficient ZY ≥ the balance coefficient threshold ZYmax, it is determined that the balance pressure of the liquid meets the reflux standard, and the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the oil return valve (6) to open, thereby performing reflux balancing processing on the liquid pressure at the water outlet pipe (3) through the oil return pipe (4); Step S4: After the processor receives the normal detection signal, the movable frame (9) continues to rise, and the displacement reflux threshold value WYn is obtained through the storage module. If the displacement value WY of the movable frame (9) increases to WYn, the pressure analysis module sends a reflux signal to the processor. After receiving the reflux signal, the processor sends the reflux signal to the controller. After receiving the reflux signal, the controller controls the oil return valve (6) to open, thereby performing reflux balancing processing on the liquid pressure at the water outlet pipe (3) through the oil return pipe (4). 7. The oil return mechanism of an oil inlet and outlet balanced electronically controlled water pump according to claim 1, characterized in that the process of the pressure balance module detecting and analyzing the operating status of the return flow component inside the oil return pipeline (4) comprises the following steps: Step S5, after the liquid is input into the water inlet pipe (2), the liquid enters the water outlet pipe (3) through the inside of the water pump body (1), and the liquid enters the inside of the two control frames (8) at both ends of the oil return pipe (4), and the moving frames (9) inside the two control frames (8) are squeezed by the liquid pressure and move upward; Step S6, simultaneously obtaining the displacement values of the two movable racks (9), obtaining the displacement detection threshold WYm through the storage module, marking the time when the displacement values of the two movable racks (9) both reach the displacement detection threshold as the cut-off time JZ, selecting a number of time points between the time when the liquid enters the water inlet pipe (2) and the cut-off time and marking them as T, where T=1, 2, ..., n, where n is a positive integer; Step S7, obtaining the absolute value of the displacement difference between the two moving frames (9) at time point T and marking it as a displacement offset value PLt, obtaining the displacement deviation threshold PLtmax through the storage module, and marking the time point when PLt is less than PLtmax as a reasonable offset point; Step S8, obtaining the number of reasonable offset points and marking them as m, marking the ratio between m and n as a reasonable deviation coefficient PL, the reasonable deviation coefficient is a numerical value indicating the degree of synchronization of the displacements of the two moving frames (9), obtaining a reasonable deviation coefficient threshold PLmin through a storage module, and comparing the reasonable deviation coefficient PL with the reasonable deviation coefficient threshold PLmin. 8. The oil return mechanism of an oil-inlet and oil-outlet balanced electronically controlled water pump according to claim 7, characterized in that: the comparison method of the reasonable deviation coefficient PL and the reasonable deviation coefficient threshold PLmin is as follows: If PL ≥ PLmin, it is determined that the operating state of the reflux component is normal, and the pressure balance module sends a normal operation signal to the processor; If PL<PLmin, it is determined that the operating state of the reflux component is abnormal, and the pressure balance module sends an abnormal operation signal to the processor. After receiving the abnormal operation signal, the processor closes the automatic control valve (15) inside the moving frame (9) on the side of the abnormal operation, and uses the control frame (8) on the other side to perform independent reflux balancing processing.