Matched siphon vacuum-pumping system in large-scale water source project

Abstract

The utility model relates to a matched siphon vacuum-pumping system in a large-scale water source project. The matched siphon vacuum-pumping system comprises a siphon pipeline, a vacuum pump, a vacuum buffer tank, a gas-water separator and an electric control cabinet, the siphon pipeline is installed on a pipeline between a water source and a water purification plant, the vacuum pump is installed on the siphon pipeline, the gas-water separator is connected to the vacuum buffer tank through a pipeline, the vacuum pump is installed on a pipeline between the gas-water separator and the vacuum buffer tank, and the vacuum buffer tank is provided with a vacuum meter for monitoring the vacuum degree in the vacuum buffer tank in real time. A vacuum buffer tank is additionally arranged between the siphon and the vacuum pump, a pressure transmitter and an emptying valve are arranged at the top of the vacuum buffer tank, and a drainage electric valve is arranged at the bottom of the vacuum buffer tank; a tuning fork liquid level detection switch is arranged at the top of the siphon; the matched siphon vacuumizing system in the large water source project is connected to the electric control cabinet. The siphon suction device is simple in structure and high in automation degree, and the siphon suction water pipe keeps continuous and stable operation.

Description

Technical Field

[0001] The utility model relates to a siphon vacuum pumping system, in particular to a siphon vacuum pumping system matched with a large water source project for siphoning water with the assistance of a vacuum pump. Background Art

[0002] At present, the common water intake devices for medium and large water source projects are water pump water intake and siphon water intake. Water pump water intake has a wide range of applications, but it is costly and energy-intensive; although siphon water intake does not consume energy, in the existing siphon technology, due to continuous operation, once the air stored at the top of the siphon tube reaches a certain volume, the siphon will be destroyed and stop working. For this reason, it is still necessary to frequently start and stop the vacuum auxiliary device, which is troublesome and the operation is mostly unstable. Utility Model Content

[0003] In view of the above problems, the main purpose of the utility model is to provide a siphon vacuum system for large-scale water source projects that uses a vacuum pump to assist in siphoning water.

[0004] The utility model solves the above technical problems through the following scheme: a siphon vacuum pumping system matched with a large water source project, the siphon vacuum pumping system matched with a large water source project comprises: a siphon pipe, a vacuum pump, a vacuum buffer tank, a gas-water separator, and an electrical control cabinet.

[0005] The siphon pipe is installed on the pipeline between the water source and the water purification plant, and is connected to the vacuum buffer tank through a water diversion branch. The vacuum buffer tank is generally connected to the vacuum pump suction port through a vacuum extraction pipe. The gas-water separator is connected to the vacuum pump exhaust port through an exhaust pipe. The vacuum pump is installed on the inlet and exhaust pipes between the gas-water separator and the vacuum buffer tank. The vacuum buffer tank is provided with a vacuum gauge for real-time monitoring of the vacuum degree in the vacuum buffer tank.

[0006] A vacuum buffer tank is added between the siphon tube and the vacuum pump. A pressure transmitter and a vent valve are arranged on the top of the vacuum buffer tank, and a drainage electric valve is arranged on the bottom. A tuning fork liquid level detection switch is arranged on the top of the siphon tube. An electric valve is arranged on the water diversion branch line between the siphon tube and the vacuum buffer tank. The siphon vacuum system in large-scale water source projects is connected to the electrical control cabinet.

[0007] In a specific implementation example of the utility model, liquid level gauges are provided on both the vacuum buffer tank and the gas-water separator.

[0008] In a specific implementation example of the utility model, an overflow pipe and a low liquid level alarm are provided on the gas-water separator.

[0009] In a specific implementation example of the utility model, a high liquid level switch and a low liquid level switch are provided on the vacuum buffer tank.

[0010] In a specific implementation example of the utility model, a tuning fork level meter for sensing water level and transmitting signals is installed at the water outlet of the siphon.

[0011] The positive progress of the utility model is that compared with the common similar technologies, the siphon vacuum system provided by the utility model in the large water source project has the following advantages:

[0012] 1. The degree of unmanned duty is high. The highly integrated automation greatly improves the unmanned duty capability and greatly reduces the on-site operation cost and management cost.

[0013] 2. The system operates stably and reliably. During the operation of the existing siphon water extraction project, due to continuous operation, once the air stored at the top of the siphon tube reaches a certain volume, the siphon will be destroyed and stop working. For this reason, it is still necessary to frequently start and stop the vacuum auxiliary device, which is troublesome and the operation is mostly unstable. The utility model can ensure the stable and reliable operation of the system by adding a vacuum buffer tank and various detection sensors.

[0014] 3. Increase the siphon water suction height. In the existing siphon technology, the siphon height is generally less than 7 meters, while the vacuum pump auxiliary vacuum pumping system involved in the utility model is not subject to height restrictions. According to the local atmospheric pressure, the highest height can be pumped to 10 meters.

[0015] 4. Save project investment and energy consumption. The vacuum pump assisted siphoning does not rely on the water pump to start the siphoning. At the same time, the power of the vacuum pump is much smaller than the power of the water pump. During operation, the vacuum pump is turned on for a very short time and frequency, and the energy consumption is very low and it can operate efficiently. Compared with the water pump water intake project, it can save about 90% of investment and operating energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the detailed connection relationship between the components of the utility model.

[0017] Figure 2 for Figure 1 Enlarged view of point "A".

[0018] Figure 3 for Figure 1 Enlarged view of point "B".

[0019] Figure 4 for Figure 1 Enlarged view of point "C".

[0020] The following are the names corresponding to the label numbers in this utility model:

[0021] Figure 1-4In: vacuum buffer tank 1, vacuum tank level gauge 2, high liquid level switch 3, low liquid level switch 4, vacuum gauge 5, electric ball valve 6, gas-water separator 7, gas-water separator level gauge 8, low liquid level alarm 9, sewage pipeline 10, exhaust port 11, overflow pipe 12, vacuum pump 13, first ball valve 14, check valve 15, second ball valve 16, first solenoid valve 17, third ball valve 18, second solenoid valve 19, fourth ball valve 20, first electric ball valve 21, second electric ball valve 22, third solenoid valve 23, pressure transmitter 24, tuning fork liquid level detection switch 25. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solution of the present invention in detail.

[0023] Figure 1 It is a schematic diagram of the detailed connection relationship between the components of the utility model. Figure 2 for Figure 1 The enlarged view of "A" Figure 3 for Figure 1 The enlarged view of "B" Figure 4 for Figure 1 The enlarged view of "C" is as follows: Figure 1-4 As shown: the siphon vacuum system provided by the utility model for large-scale water source projects includes a siphon pipe, a vacuum pump 13, a vacuum buffer tank 1, a gas-water separator 7, and an electrical control cabinet (not shown in the figure); the siphon pipe is installed on the pipe between the water source and the water purification plant, and is connected to the vacuum buffer tank 1 through a water diversion branch line. The vacuum buffer tank 1 is connected to the air suction port of the vacuum pump through a universal vacuum pipe, and the gas-water separator 7 is connected to the exhaust port of the vacuum pump through an exhaust pipe. The inlet and exhaust pipes between the gas-water separator 7 and the vacuum buffer tank 1 are installed with the above-mentioned A vacuum pump 13 is provided on the vacuum buffer tank, and a vacuum gauge for real-time monitoring of the vacuum degree in the vacuum buffer tank is provided; a vacuum buffer tank 1 is added between the siphon tube and the vacuum pump 13, a pressure transmitter 24 and a vent valve (the third solenoid valve 23 in the figure) are provided on the top of the vacuum buffer tank 1, and a drainage electric valve (the electric ball valve 6 in the figure) is provided on the bottom; a tuning fork liquid level detection switch 25 is provided on the top of the siphon tube; an electric valve is provided on the water diversion branch between the siphon tube and the vacuum buffer tank; the siphon vacuum system in the large-scale water source project is connected to the electrical control cabinet.

[0024] Liquid level gauges are provided on the vacuum buffer tank 2 and the gas-water separator 7, which are the vacuum tank liquid level gauge 2 and the gas-water separator liquid level gauge 8 in the figure respectively.

[0025] An overflow pipe 12 and a low liquid level alarm 9 are provided on the gas-water separator 7, and a high liquid level switch 3 and a low liquid level switch 4 are provided on the vacuum buffer tank.

[0026] A tuning fork level meter is installed at the outlet of the siphon to sense the water level and transmit signals. Figure 1 and 2 N2 in.

[0027] The application of this utility model mainly includes the following steps:

[0028] 1. Selectively start the vacuum system according to the water level of the water source.

[0029] 2. Start the electrical control cabinet and put the system into standby mode.

[0030] 3. Turn on the vacuum pump and open the vacuum branch valve of the siphon pipe at the same time to start vacuuming the siphon pipe.

[0031] 4. Monitor the vacuum degree of the vacuum tank in real time through the pressure sensor. When the preset value is reached, stop the vacuum pump.

[0032] 5. Based on the water flow signal fed back by the tuning fork switch at the hump of the siphon pipe, close the vacuum branch valve and open the siphon pipe outlet valve to start drainage.

[0033] 6. According to the actual working conditions, adjust the parameters of the electrical control system to achieve precise control of the water intake process.

[0034] 7. During the water extraction process, continuously monitor system vacuum, water flow signal, water level and other parameters to ensure stable operation of the system.

[0035] by Figure 1 Take this as an example to explain in detail the control principle of the entire vacuum system:

[0036] 1. Automatic control principle of vacuum pump:

[0037] The start and stop of the vacuum pump is automatically controlled according to the upper / lower limit of the vacuum pressure in the vacuum tank.

[0038] For example: the upper limit of the pressure in the vacuum buffer tank 1 is set to -0.08MPa, and the lower limit is set to -0.06MPa. When the vacuum pressure in the vacuum tank is lower than the set lower limit, the pressure transmitter will transmit a signal to the control cabinet. After receiving the signal, the control cabinet will control the vacuum pump suction port, the first ball valve 14 will open, the first solenoid valve 17 will open, the vacuum pump motor will start, and the vacuum pump will start to evacuate. When the vacuum pressure in the vacuum tank reaches the set upper limit, the pressure transmitter will transmit a signal to the control cabinet. After receiving the signal, the control cabinet will control the vacuum pump motor to stop, the first ball valve 14 at the vacuum pump suction port will close, the first solenoid valve 17 will close, and the vacuum pump 13 will stop running.

[0039] 2. The vacuum buffer tank 1 adopts automatic drainage:

[0040] The vacuum buffer tank 1 is equipped with a vacuum tank level gauge 2 and a level transmitter for displaying the height of the liquid level in the vacuum tank and transmitting signals. When the liquid level in the vacuum tank reaches the set high level, the second electric ball valve 22 is automatically closed, and then the venting solenoid valve (third solenoid valve 23) and the sewage electric valve (manual ball valve 6) on the vacuum tank are automatically opened to start draining; when the liquid in the vacuum tank is discharged to the set low level, the venting valve (third solenoid valve 23) and the sewage valve (electric ball valve 6) on the vacuum tank are automatically closed, and the second electric ball valve 22 is opened.

[0041] 3. Automatic refilling of gas-water separator:

[0042] The gas-water separator is equipped with a liquid level meter and a liquid level transmitter to display the liquid level in the separator and transmit signals. When the liquid level in the separator is lower than the set low level, the second solenoid valve 19 is automatically opened to start replenishing liquid; when the liquid in the separator is replenished to the set high level, the replenishing solenoid valve (the second solenoid valve 19) is automatically closed.

[0043] 4. Siphon vacuum water diversion control principle:

[0044] Install an N2 tuning fork level meter (for sensing water level and transmitting signals) at the outlet pipe of the siphon.

[0045] When the tuning fork level gauge does not sense water, the N3 valve is closed, and the first electric ball valve 21 is opened to start vacuuming and water extraction; when the tuning fork level gauge senses water, the first electric ball valve 21 is closed, and the N3 valve is opened to start drainage. Figure 1 N1 in 2 is a normally open valve.

[0046] In the present invention, the present invention requires a high degree of automation, the PLC adopts Siemens S7-1200 series, and the electrical components are selected from Siemens, Schneider, and ABB.

[0047] The utility model improves the existing technology of directly connecting the siphon tube to the vacuum pump by adding a large vacuum buffer tank between the siphon tube and the vacuum pump, and at the same time adding a pressure transmitter and a vent valve on the top of the vacuum buffer tank, and adding a drainage electric valve on the bottom; adding a tuning fork liquid level detection switch on the top of the siphon tube; adding an electric valve on the water diversion branch between the siphon tube and the vacuum buffer tank. Using a highly integrated automatic control system, according to the pressure setting and holding range, the vacuum pump is automatically operated to maintain the pressure of the vacuum buffer tank; the water is automatically drained according to the liquid level monitoring value of the vacuum buffer tank; at the same time, the electric valve on the water diversion branch is automatically switched on and off according to the tuning fork liquid level detection switch on the top of the siphon tube, thereby ensuring and improving the requirements of high efficiency, energy saving, stable and reliable operation of the entire siphon system.

[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A siphon vacuum system for large water source projects, characterized by: The supporting siphon vacuum system in the large water source project includes: siphon pipeline, vacuum pump, vacuum buffer tank, gas-water separator, electrical control cabinet; The siphon pipe is installed on the pipeline between the water source and the water treatment plant and connected to the vacuum buffer tank through the water diversion branch. The vacuum buffer tank is generally connected to the vacuum pump exhaust port through a vacuum extraction pipeline, the gas-water separator is connected to the vacuum pump exhaust port through an exhaust pipeline, and the vacuum pump is installed on the inlet and exhaust pipeline between the gas-water separator and the vacuum buffer tank. The vacuum buffer tank is provided with a vacuum gauge for real-time monitoring of the vacuum degree in the vacuum buffer tank; A vacuum buffer tank is added between the siphon and the vacuum pump. A pressure transmitter and a vent valve are arranged on the top of the vacuum buffer tank, and a drain electric valve is arranged on the bottom. A tuning fork liquid level detection switch is arranged on the top of the siphon; an electric valve is arranged on the water diversion branch between the siphon and the vacuum buffer tank. The siphon vacuum system in large water source projects is connected to the electrical control cabinet.

2. The siphon vacuum system for large-scale water source projects according to claim 1, characterized in that: Liquid level gauges are installed on the vacuum buffer tank and the gas-water separator.

3. The siphon vacuum system for large-scale water source projects according to claim 1, characterized in that: The gas-water separator is equipped with an overflow pipe and a low liquid level alarm.

4. The siphon vacuum system for large-scale water source projects according to claim 1, characterized in that: The vacuum buffer tank is provided with a high liquid level switch and a low liquid level switch.

5. The siphon vacuum system for large-scale water source projects according to claim 1, characterized in that: A tuning fork level meter for sensing water level and transmitting signals is installed at the outlet pipe of the siphon.

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