Pressure stabilizing structure of liquid supply system pipeline and pressure stabilizing method of pressure stabilizing structure

Abstract

The invention relates to a pressure stabilizing structure of a liquid supply system pipeline. The pressure stabilizing structure comprises a gas-liquid separator, a front pressure transmitter, a backwashing filter, a diaphragm pump and a rear pressure transmitter which are sequentially arranged on the pipeline, the pipeline is composed of a first pipeline and a plurality of second branch pipelines, the front pressure transmitter, the backwashing filter, the diaphragm pump and the rear pressure transmitter are sequentially distributed on the second branch pipelines from the starting end to the tail end, and the second branch pipelines are provided with pulse buffer tanks at the lower edge positions of the diaphragm pump; the pulse buffer tank is arranged between the diaphragm pump and the rear pressure transmitter, and the plurality of second branch pipelines are connected with an external system through an output pipeline. The diaphragm pump has the following advantages that the front-end pressure transmitter is arranged to monitor the liquid supply pressure in real time and prevent the diaphragm pump from being loaded or overloaded, the rear-end pressure transmitter serves as a pressure stabilizing feedback main signal to control the target pressure, the measurement accuracy and stability are guaranteed, pipeline vibration and noise are reduced, and the conveying efficiency of the diaphragm pump and the pipeline is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of liquid supply systems, and in particular relates to a pressure stabilizing structure and a pressure stabilizing method for a liquid supply system pipeline. Background Art

[0002] The pressure-stabilizing structure of the liquid medicine supply system is mainly used to maintain a stable fluid pressure to ensure the safety, accuracy and reliability of liquid medicine delivery. The pressure-stabilizing structure of the liquid supply system can reduce pressure fluctuations, so that the liquid medicine can be output at a constant flow rate, avoiding uneven flow caused by pressure changes. When the pipeline is blocked or the pumping pressure is too high, the pressure-stabilizing structure can automatically release or adjust the pressure to prevent pipe burst, liquid medicine leakage or equipment damage.

[0003] The existing pressure stabilizing structure of the liquid supply system has the following technical defects: a single pressure transmitter for monitoring the pressure value is set on the pipeline. The single pressure transmitter is easily interfered by external factors, such as ambient temperature changes and vibrations, resulting in measurement errors. When the pressure change of the liquid supply system exceeds its measurement range, it cannot accurately monitor the pressure change, resulting in the system being unable to adjust in time, affecting the stability and reliability of the system. Once a single pressure transmitter fails, the pressure monitoring and pressure stabilization functions of the entire liquid supply system are affected, resulting in the system being unable to operate normally; secondly, the diaphragm pump will generate pressure fluctuations during operation, and the pressure fluctuations will affect the flow state of the liquid medicine in the pipeline, which may lead to reduced fluid delivery efficiency and affect the overall performance of the liquid supply system. Vibration and noise will be generated during operation. Long-term operation will damage the diaphragm pump structure and shorten the service life of the diaphragm pump. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above shortcomings and provide a pressure stabilizing structure for the liquid supply system pipeline. By setting a front-end pressure transmitter to monitor the liquid supply pressure in real time, the diaphragm pump is prevented from being loaded or overloaded. The rear-end pressure transmitter serves as the main signal for pressure stabilization feedback to control the target pressure, thereby ensuring measurement accuracy and stability, reducing pipeline vibration and noise, and ensuring the delivery efficiency of the diaphragm pump and pipeline.

[0005] The object of the present invention is achieved through the following technical solutions: A pressure stabilizing structure for a liquid supply system pipeline, comprising a gas-liquid separator, a front pressure transmitter, a backwash filter, a diaphragm pump and a rear pressure transmitter sequentially arranged on the pipeline; The pipeline consists of a first pipeline and multiple second branch pipelines. The gas-liquid separator is arranged at the starting end of the first pipeline. The end of the first pipeline is connected to the starting ends of the multiple second branch pipelines. The front pressure transmitter, backwash filter, diaphragm pump and rear pressure transmitter are distributed in sequence from the starting end to the end on the second branch pipeline. The second branch pipeline is located at the lower edge of the diaphragm pump and has a pulse buffer tank. The pulse buffer tank is placed between the diaphragm pump and the rear pressure transmitter. The multiple second branch pipelines are connected to the external system through the output pipeline.

[0006] A further improvement of the present invention is that the backwash filter includes a filter branch pipe 1 and a filter branch pipe 2 arranged in parallel on the second branch pipe, the filter branch pipe 1 is provided with a backwash filter 1, the filter branch pipe 2 is provided with a backwash filter 2, both the filter branch pipe 1 and the filter branch pipe 2 are provided with an opening and closing valve 1, and both the filter branch pipe 1 and the filter branch pipe 2 are provided with a pressure sensor.

[0007] A further improvement of the present invention is that the pressure sensor is placed at the lower edge of the backwash filter 1 or the backwash filter 2, and the opening and closing valve 1 is placed at the upper edge of the backwash filter 1 or the backwash filter 2.

[0008] A further improvement of the present invention is that the second branch pipeline is placed at the front and rear edges of the diaphragm pump and is connected to a backwash pipeline, and the backwash pipeline is provided with a second opening and closing valve.

[0009] A further improvement of the present invention is that a pressure relief valve is provided on the second branch pipe at a position below the rear pressure transmitter.

[0010] A pressure stabilizing method for a pressure stabilizing structure of a liquid supply system pipeline, characterized in that the specific steps include: S1, the front pressure transmitter monitors the pressure value at the front of the second branch pipeline in real time. If the pressure value is lower than the lower threshold value set by the system or higher than the upper threshold value set by the system, the system sends a signal instruction to the diaphragm pump on the corresponding second branch pipeline to adjust its speed; S2. The rear pressure transmitter monitors the pressure value at the end of the second branch pipeline in real time. If the pressure value is higher than the upper threshold set by the system, the system sends an opening signal command to the pressure relief valve on the corresponding second branch pipeline. If the pressure value monitored by the rear pressure transmitter continues to be higher than the upper threshold set by the system after the pressure relief valve is opened for 30s-60s, the system sends a shutdown signal command to the pressure stabilization structure; S3. The pressure sensor monitors the pressure value of filter branch one or filter branch two in the working state. If the monitored pressure value is lower than the lower threshold set by the system, the opening and closing valve on the corresponding filter branch one or filter branch two is closed, and the opening and closing valve on the other filter branch is opened, thereby achieving normal liquid supply without stopping the machine.

[0011] Compared with the prior art, the present invention has the following advantages: 1. In the present invention, the front-end and rear-end pressure transmitters are used to monitor the liquid supply pressure and the target liquid discharge pressure in real time, and the rotation speed or valve opening of the diaphragm pump is dynamically adjusted to maintain the set pressure. The front-end pressure transmitter is set to monitor the liquid supply pressure in real time to prevent the diaphragm pump from being loaded or overloaded. The rear-end pressure transmitter is used as the main signal for voltage stabilization feedback to control the target pressure, thereby ensuring measurement accuracy and stability.

[0012] 2. The present invention provides a pulse buffer tank at the lower edge of the diaphragm pump to absorb the pulse fluctuations of the diaphragm pump, reduce pipeline vibration and noise, and ensure the transportation efficiency and service life of the diaphragm pump and pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The diagram is a schematic diagram of the principle of a pressure stabilizing structure and a pressure stabilizing method for a liquid supply system pipeline according to the present invention.

[0014] Numbers in the figure: 1-gas-liquid separator, 2-front pressure transmitter, 3-backwash filter, 4-diaphragm pump, 5-rear pressure transmitter, 6-first pipeline, 7-second branch pipeline, 8-pulse buffer tank, 9-pressure relief valve, 10-backwash pipeline, 11-on / off valve 2, 12-output pipeline; 31-Filter branch pipe 1, 32-Filter branch pipe 2, 33-Backwash filter 1, 34-Backwash filter 2, 35-Opening and closing valve 1, 36-Pressure sensor. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that terms indicating orientation or positional relationships, such as the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure or unit referred to must have a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0017] In the present invention, unless otherwise clearly stipulated and limited, terms such as "connected", "provided with", "having", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be said to be a mechanical connection, or it can be directly connected, or it can be connected through an intermediate medium. For those skilled in the art, the basic meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0018] A pressure stabilizing structure for a liquid supply system pipeline, referring to Figure 1, including a gas-liquid separator 1, a front pressure transmitter 2, a backwash filter 3, a diaphragm pump 4 and a rear pressure transmitter 5 which are sequentially arranged on the pipeline; The pipeline consists of a first pipeline 6 and multiple second branch pipelines 7. The gas-liquid separator 1 is arranged at the starting end of the first pipeline 6. The end of the first pipeline 6 is connected to the starting ends of the multiple second branch pipelines 7. The front pressure transmitter 2, the backwash filter 3, the diaphragm pump 4 and the rear pressure transmitter 5 are distributed in sequence from the starting end to the end on the second branch pipeline 7. The second branch pipeline 7 is located at the lower edge of the diaphragm pump 4 and has a pulse buffer tank 8. The pulse buffer tank 8 is placed between the diaphragm pump 4 and the rear pressure transmitter 5. The multiple second branch pipelines 7 are connected to the external system through the output pipeline 12.

[0019] In the present invention, the front-end and rear-end pressure transmitters are used to monitor the liquid supply pressure and the target liquid discharge pressure in real time, dynamically adjust the speed or valve opening of the diaphragm pump, and maintain the set pressure. By setting the front-end pressure transmitter to monitor the liquid supply pressure in real time, the diaphragm pump is prevented from being loaded or overloaded. The rear-end pressure transmitter is used as the main signal for voltage stabilization feedback to control the target pressure, thereby ensuring measurement accuracy and stability.

[0020] The present invention provides a pulse buffer tank 8 at the lower edge of the diaphragm pump 4 to absorb the pulse fluctuation of the diaphragm pump 4, reduce pipeline vibration and noise, and ensure the transportation efficiency and service life of the diaphragm pump and pipeline.

[0021] Based on this embodiment, the backwash filter 3 includes a filter branch pipe 1 31 and a filter branch pipe 2 32 arranged in parallel on the second branch pipe 7, the filter branch pipe 1 31 has a backwash filter 1 33, the filter branch pipe 2 32 has a backwash filter 2 34, the filter branch pipe 1 31 and the filter branch pipe 2 32 both have an opening and closing valve 1 35, and the filter branch pipe 1 31 and the filter branch pipe 2 32 both have a pressure sensor 36.

[0022] Furthermore, the pressure sensor 36 is placed at the lower edge of the backwash filter 1 33 or the backwash filter 2 34 , and the opening and closing valve 1 35 is placed at the upper edge of the backwash filter 1 33 or the backwash filter 2 34 .

[0023] During liquid delivery, one of the two opening and closing valves 35 is opened and the other is closed. The liquid medicine flows in the filter branch 1 31 or the filter branch 2 32 where the opening and closing valve 1 is opened, and the corresponding backwash filter filters the circulating liquid medicine. When the pressure sensor 36 on the filter branch detects that the pipeline pressure value is lower than the predetermined value set by the system, the working opening and closing valve 35 and the backwash filter are closed, and the working opening and closing valve 35 and the backwash filter are opened, and the normal liquid medicine delivery is realized by switching to the other filter branch. At this time, the backwash filter in the closed state automatically turns on the backwash mode, and backwashes the backwash filter that is not in the filtering state to remove blockages, thereby ensuring that the backwash filter is in a normal state for use after cleaning.

[0024] On the basis of this embodiment, the second branch pipeline 7 is placed at the front and rear edges of the diaphragm pump 4 and is connected to a backwash pipeline 10 , and the backwash pipeline 10 is provided with an opening and closing valve 11 .

[0025] Based on this embodiment, a pressure relief valve 9 is provided on the second branch pipeline 7 at the lower edge of the rear pressure transmitter 5 .

[0026] The pressure relief valve 9 on the rear side of the rear pressure transmitter plays a vital role in the system, primarily preventing damage to the system and piping caused by excessive pressure. When the pressure in the pipeline exceeds a preset safety value, the pressure relief valve automatically opens, releasing the excess pressure to the atmosphere or other safe channels to protect the internal equipment and personnel.

[0027] A pressure stabilizing method for a pressure stabilizing structure of a liquid supply system pipeline, comprising the following steps: S1, the front pressure transmitter 2 monitors the pressure value at the front edge of the second branch pipeline 7 in real time. If the pressure value is lower than the lower threshold value set by the system or higher than the upper threshold value set by the system, the system sends a signal instruction to the diaphragm pump 4 on the corresponding second branch pipeline 7 to adjust its speed; S2. The rear pressure transmitter 5 monitors the pressure value at the end of the second branch pipeline 7 in real time. If the pressure value is higher than the upper threshold set by the system, the system sends an opening signal command to the pressure relief valve 9 on the corresponding second branch pipeline 7. If the pressure value monitored by the rear pressure transmitter 5 continues to be higher than the upper threshold set by the system after the pressure relief valve 9 is opened for 30s-60s, the system sends a shutdown signal command to the pressure stabilization structure; S3. The pressure sensor 36 monitors the pressure value of the filter branch 1 31 or the filter branch 2 32 in the working state. If the monitored pressure value is lower than the lower threshold value set by the system, the opening and closing valve 1 35 on the corresponding filter branch 1 31 or the filter branch 2 32 is closed, and the opening and closing valve 1 35 on the other filter branch is opened, thereby achieving normal liquid supply without stopping the machine.

[0028] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure stabilizing structure for a liquid supply system pipeline, characterized by: It includes a gas-liquid separator, a front pressure transmitter, a backwash filter, a diaphragm pump and a rear pressure transmitter which are sequentially arranged on the pipeline; The pipeline consists of a first pipeline and multiple second branch pipelines. The gas-liquid separator is arranged at the starting end of the first pipeline. The end of the first pipeline is connected to the starting ends of the multiple second branch pipelines. The front pressure transmitter, backwash filter, diaphragm pump and rear pressure transmitter are distributed in sequence from the starting end to the end on the second branch pipeline. The second branch pipeline is located at the lower edge of the diaphragm pump and has a pulse buffer tank. The pulse buffer tank is placed between the diaphragm pump and the rear pressure transmitter. The multiple second branch pipelines are connected to the external system through output pipelines.

2. The pressure stabilizing structure for a liquid supply system pipeline according to claim 1, characterized in that: The backwash filter includes a filter branch pipe 1 and a filter branch pipe 2 arranged in parallel on the second branch pipe. The filter branch pipe 1 is provided with a backwash filter 1, and the filter branch pipe 2 is provided with a backwash filter 2. Both the filter branch pipe 1 and the filter branch pipe 2 are provided with an opening and closing valve 1, and both the filter branch pipe 1 and the filter branch pipe 2 are provided with a pressure sensor.

3. The pressure stabilizing structure for a liquid supply system pipeline according to claim 2, characterized in that: The pressure sensor is placed at the lower edge of the backwash filter 1 or the backwash filter 2, and the opening and closing valve 1 is placed at the upper edge of the backwash filter 1 or the backwash filter 2.

4. The pressure stabilizing structure for a liquid supply system pipeline according to claim 3, characterized in that: The second branch pipeline is placed at the front and rear edges of the diaphragm pump and is connected to a backwash pipeline. The backwash pipeline is provided with a second opening and closing valve.

5. The pressure stabilizing structure for a liquid supply system pipeline according to claim 4, characterized in that: A pressure relief valve is provided on the second branch pipeline at a position below the rear pressure transmitter.

6. A pressure stabilizing method using the pressure stabilizing structure of the liquid supply system pipeline according to claim 5, characterized in that: The specific steps include: S1, the front pressure transmitter monitors the pressure value at the front of the second branch pipeline in real time. If the pressure value is lower than the lower threshold value set by the system or higher than the upper threshold value set by the system, the system sends a signal instruction to the diaphragm pump on the corresponding second branch pipeline to adjust its speed; S2. The rear pressure transmitter monitors the pressure value at the end of the second branch pipeline in real time. If the pressure value is higher than the upper threshold set by the system, the system sends an opening signal command to the pressure relief valve on the corresponding second branch pipeline. If the pressure value monitored by the rear pressure transmitter continues to be higher than the upper threshold set by the system after the pressure relief valve is opened for 30s-60s, the system sends a shutdown signal command to the pressure stabilization structure; S3. The pressure sensor monitors the pressure value of filter branch one or filter branch two in the working state. If the monitored pressure value is lower than the lower threshold set by the system, the opening and closing valve on the corresponding filter branch one or filter branch two is closed, and the opening and closing valve on the other filter branch is opened, thereby achieving normal liquid supply without stopping the machine.

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