Air compression energy consumption type reverse osmosis safe burst membrane protection device

Abstract

The application provides an air compression energy consumption type reverse osmosis safety burst membrane protection device, and relates to the technical field of safety burst membranes, which comprises an original pipeline, a burst membrane, an energy consumption cavity and a sliding plate. The burst membrane is arranged in the original pipeline. The energy consumption cavity is arranged on one side of the original pipeline in front of the burst membrane. The energy consumption cavity is provided with a lower water inlet and an upper gas outlet. The lower water inlet is communicated with the original pipeline through a water pipe. The upper gas outlet is communicated with the original pipeline through an air pipe. A one-way valve is arranged in the air pipe. The one-way valve can only allow fluid in the energy consumption cavity to flow to the original pipeline. The sliding plate is arranged in the energy consumption cavity between the lower water inlet and the upper gas outlet and can slide up and down. The edge of the sliding plate is attached to the inner wall of the energy consumption cavity. The energy consumption cavity above the sliding plate is filled with gas. Under the impact of water flow, the sliding plate slides upward and extrudes the gas in the energy consumption cavity into the original pipeline. The scheme provided by the application can reduce the damage of water hammer to the safety burst membrane during start-up and shutdown.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safe blasting membrane, in particular to an air compression energy dissipation type reverse osmosis safe blasting membrane protection device. BACKGROUND

[0002] The safe blasting membrane is mainly applied to large reverse osmosis such as power plants, steel plants and seawater desalination. The safe blasting membrane is generally installed on the side of the water production pipeline, mainly to prevent the generation of back pressure, which causes the damage of the reverse osmosis membrane. Generally, when the back pressure of the system water production side is greater than 0.3 MPa, the safe blasting membrane is broken to release pressure to avoid the damage of the membrane element. Due to the generation of "water hammer" phenomenon in the system design, when the back pressure of the water production side does not exceed 0.3 MPa, the safe blasting membrane is likely to be broken by the impact of "water hammer", especially during start-up and shutdown. This will cause the system to stop running, and also cause the waste of the safe blasting membrane. Therefore, a new scheme is needed to solve the above problems. SUMMARY

[0003] The purpose of the present application is to provide an air compression energy dissipation type reverse osmosis safe blasting membrane protection device to solve the problems existing in the prior art and reduce the damage of "water hammer" to the safe blasting membrane during start-up and shutdown.

[0004] To achieve the above-mentioned purpose, the present application provides the following scheme:

[0005] The present application provides an air compression energy dissipation type reverse osmosis safe blasting membrane protection device, which comprises an original pipeline, a blasting membrane, an energy dissipation cavity and a sliding plate. The blasting membrane is arranged in the original pipeline. The energy dissipation cavity is arranged on one side of the original pipeline in front of the blasting membrane. The energy dissipation cavity is provided with a lower water inlet and an upper gas outlet. The lower water inlet is communicated with the original pipeline through a water pipe. The upper gas outlet is communicated with the original pipeline through an air pipe. A one-way valve is arranged in the air pipe. The one-way valve can only allow the fluid in the energy dissipation cavity to flow to the original pipeline. The sliding plate is arranged in the energy dissipation cavity between the lower water inlet and the upper gas outlet and can slide up and down. The edge of the sliding plate is attached to the inner wall of the energy dissipation cavity. The energy dissipation cavity above the sliding plate is filled with gas. Under the impact of water flow, the sliding plate slides upward and squeezes the gas in the energy dissipation cavity into the original pipeline.

[0006] Preferably, the air pressure adjusting device is arranged for adjusting the air pressure in the energy dissipation cavity.

[0007] Preferably, a valve is arranged on the original pipeline in front of the blasting membrane and at the lower water inlet. The two valves are controlled by a single-throw double-pole switch. The single-throw double-pole switch can control one of the two valves to be opened and the other to be closed.

[0008] Preferably, a pressure sensor is arranged in the original pipeline, and the pressure sensor is used to monitor the liquid pressure in the original pipeline.

[0009] In normal state, the single-pole double-throw switch controls the lower water inlet to be closed, and the original pipeline is turned on.

[0010] When the pressure sensor monitors that the liquid pressure is greater than the set threshold value during start-up and shutdown, the single-pole double-throw switch is switched by the control system, the lower water inlet is opened, the original pipeline is turned off, and the one-way valve can be opened at the same time.

[0011] The present application has the following technical effects compared with the prior art:

[0012] The air compression energy consumption type reverse osmosis safety burst membrane protection device provided by the present application can guide the liquid forming a water hammer into the energy consumption cavity to work on the sliding plate, consume energy in the process of lifting the sliding plate, and the gas sprayed from the upper air outlet can impact and consume energy of the water hammer in the original pipeline. Therefore, the scheme provided by the present application can reduce the damage of the water hammer to the safety burst membrane during start-up and shutdown. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 The structure schematic diagram of the air compression energy consumption type reverse osmosis safety burst membrane protection device provided by the present application is shown in the figure.

[0015] Figure 2 The structure schematic diagram of the energy consumption cavity and the sliding plate is shown in the figure. Figure 1

[0016] In the figure: 1-original pipeline; 2-burst membrane; 3-energy consumption cavity; 4-sliding plate; 5-air pressure regulating valve; 6-one-way valve; 7-single-pole double-throw switch. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] ​The application aims to provide an air compression energy consumption type reverse osmosis safe burst membrane protection device to solve the problems of the prior art and reduce the damage of water hammer to the safe burst membrane during start-up and shutdown.

[0019] In order to make the above-mentioned objectives, characteristics and advantages of the present application more apparent, further detailed description will be given below in combination with the drawings and specific embodiments.

[0020] The application provides an air compression energy consumption type reverse osmosis safe burst membrane protection device, as shown in Figure 1 and Figure 2 , which comprises an original pipeline 1, a burst membrane 2, an energy consumption cavity 3 and a sliding plate 4. The burst membrane 2 is arranged in the original pipeline 1. The energy consumption cavity 3 is arranged on one side of the original pipeline 1 at the front side of the burst membrane 2. The energy consumption cavity 3 is provided with a lower water inlet and an upper gas outlet. The lower water inlet is communicated with the original pipeline 1 through a water pipe. The upper gas outlet is communicated with the original pipeline 1 through an air pipe. A one-way valve 6 is arranged in the air pipe. The one-way valve 6 can only allow the fluid in the energy consumption cavity 3 to flow to the original pipeline 1. The sliding plate 4 is arranged in the energy consumption cavity 3 between the lower water inlet and the upper gas outlet and can slide up and down. The edge of the sliding plate 4 is attached to the inner wall of the energy consumption cavity 3. The energy consumption cavity 3 above the sliding plate 4 is filled with gas. Under the impact of water flow, the sliding plate 4 slides upward and squeezes the gas in the energy consumption cavity 3 into the original pipeline 1. The up-and-down sliding of the sliding plate 4 can be realized by the sliding cooperation of the edge of the sliding plate 4 and the inner wall of the energy consumption cavity 3 or by arranging two vertical circular guide columns. Specifically, two circular guide columns are fixedly arranged in the energy consumption cavity 3. Two sliding holes are formed in the sliding plate 4. The circular guide columns are arranged in the sliding holes, thereby realizing the up-and-down sliding effect of the sliding plate 4.

[0021] When the water hammer phenomenon occurs during start-up and shutdown, the liquid enters the energy consumption cavity 3 through the lower water inlet. The liquid lifts the sliding plate 4 and compresses the gas above the sliding plate 4. The energy is consumed in the process of lifting the sliding plate 4. The gas sprayed from the upper gas outlet can impact and consume the water hammer in the original pipeline 1. Therefore, the scheme provided by the present application can reduce the damage of water hammer to the safe burst membrane 2 during start-up and shutdown.

[0022] In some embodiments, the air compression energy consumption type reverse osmosis safe burst membrane protection device further comprises a gas pressure adjusting device. The gas pressure adjusting device is used to adjust the gas pressure in the energy consumption cavity 3 so as to adjust the gas pressure in the energy consumption cavity 3 according to the actual working condition. The gas pressure adjusting device adjusts the gas pressure in the energy consumption cavity 3 through a gas pressure adjusting valve 5. In another embodiment, a pressure sensor can be arranged in the energy consumption cavity 3 to detect the gas pressure value in the energy consumption cavity 3 in real time and transmit the gas pressure value to the control system of the computer in real time.

[0023] In some embodiments, the upper air outlet is arranged close to the top of the energy consumption cavity 3, but there is still a certain distance, so when the sliding plate 4 slides to the upper air outlet, the cavity below the sliding plate 4 and the pipeline form a loop, and the liquid below the sliding plate 4 can flow into the original pipeline 1 through the upper air outlet and impact the water hammer in the original pipeline 1 to consume energy.

[0024] In some embodiments, the original pipeline 1 on the front side of the burst membrane 2 and the lower water inlet are both provided with valves, and the two valves are controlled by a single-throw double-pole switch 7, which can control one of the two valves to be opened and the other to be closed. Under normal circumstances, the single-throw double-pole switch 7 controls the lower water inlet to be closed, the original pipeline 1 to be open, and the check valve 6 to be closed (to prevent gas leakage); when starting and stopping, to avoid the impact of the water hammer on the burst membrane 2, the valve at the original pipeline 1 is closed, the check valve 6 and the valve at the lower water inlet are opened synchronously, so as to guide the fluid into the energy consumption cavity 3 for energy consumption treatment; when the fluid in the original pipeline 1 is in a stable state, the working state of the single-throw double-pole switch 7 is switched again to make the original pipeline 1 open and the valve at the lower water inlet closed, so that the burst membrane 2 can sense the change of fluid pressure under the stable state.

[0025] Of course, in other embodiments, the two valves can also be set as electromagnetic valves controlled by the control system to control the opening and closing of the lower water inlet and the original pipeline.

[0026] In some embodiments, a pressure sensor is also arranged in the original pipeline 1, which is used to monitor the liquid pressure in the original pipeline 1;

[0027] When the pressure sensor detects that the liquid pressure is greater than the set threshold value during starting and stopping, the single-throw double-pole switch 7 is switched by the control system to make the lower water inlet open and the original pipeline 1 closed; and the check valve 6 is also controlled to be opened, so as to consume energy by the energy consumption cavity 3 and the sliding plate 4 on the side, and the above-mentioned pressure threshold value is less than 0.3MPa.

[0028] In the present application, specific examples are applied to illustrate the principles and implementation modes of the present application, and the above-mentioned embodiments are only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the present application should not be understood as a limitation of the present application.

Claims

1. An air compression energy-consuming reverse osmosis safety burst membrane protection device, characterized in that: The original pipeline, the blasting membrane, the energy dissipation cavity and the sliding plate are included, the blasting membrane is arranged in the original pipeline, the energy dissipation cavity is arranged on one side of the original pipeline in front of the blasting membrane, the energy dissipation cavity is provided with a lower water inlet and an upper gas outlet, the lower water inlet is communicated with the original pipeline through a water pipe, the upper gas outlet is communicated with the original pipeline through an air pipe, a one-way valve is arranged in the air pipe, the one-way valve can only make the fluid in the energy dissipation cavity flow to the original pipeline, the sliding plate is arranged in the energy dissipation cavity between the lower water inlet and the upper gas outlet and can slide up and down, the edge of the sliding plate is attached to the inner wall of the energy dissipation cavity, the energy dissipation cavity above the sliding plate is filled with gas, under the impact of water flow, the sliding plate slides upward and extrudes the gas in the energy dissipation cavity into the original pipeline, the gas pressure adjusting device is further included, the gas pressure adjusting device is used for adjusting the gas pressure in the energy dissipation cavity, the valve is arranged on the original pipeline in front of the blasting membrane and at the lower water inlet, the two valves are controlled by a single-throw double-pole switch, the single-throw double-pole switch can control one of the two valves to be opened and the other to be closed, the pressure sensor is further arranged in the original pipeline, the pressure sensor is used for monitoring the liquid pressure in the original pipeline, under normal circumstances, the single-throw double-pole switch controls the lower water inlet to be closed and the original pipeline to be conducted, when starting and stopping, when the pressure sensor monitors that the liquid pressure is greater than the set threshold value, the single-throw double-pole switch is switched by the control system and the lower water inlet is opened, the original pipeline is closed, and the one-way valve can be opened at the same time, the set threshold value is less than 0.3MPa.

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