Large-flow double suction pump vacuum water diversion automatic keeping device

Abstract

The utility model relates to a high-flow double-suction pump vacuum water diversion automatic keeping device which comprises a double-suction pump, a vacuum pump, a suction tank, a vacuum tank and an integrated control box. The air extraction tank is installed at an exhaust port of the double suction pump and provided with a high-low liquid level switch, the high liquid level switch is located above the tank body, the low liquid level switch is located below the tank body, and an outlet of the air extraction tank is connected with an inlet of the vacuum tank. When water flows into an upper-layer pipeline and flows into a lower layer through a communicating pipe, the lower layer is controlled by a high-low liquid level switch, and once the liquid level is higher than a high liquid level set point, the communicating pipe of the upper layer and the lower layer is cut off through an electromagnetic valve, a vacuum breaking valve of the lower layer is opened, and automatic drainage is achieved. When the water level drops to a low liquid level set point, the vacuum breaking valve is closed, and the communicating pipe electromagnetic valve is opened to continue working. A working water pipeline of the vacuum pump is provided with a manual valve, and the large-flow double-suction pump and the vacuum water diversion automatic keeping device are controlled by an integrated control box. The device is compact in structure and good in stability.

Description

Technical Field

[0001] The utility model relates to an automatic holding device, in particular to a large-flow double-suction pump plus vacuum water diversion automatic holding device which can realize the purpose of automatically holding water pumping by a large-flow double-suction pump through the vacuum generated by the operation of a vacuum pump. Background Technique

[0002] In large water plants, most of the selected water pumps are large-flow and large-caliber double-suction pumps. Most of these water pumps are installed above the liquid level, with multiple units in use and multiple units in reserve, and the water pumps will be automatically switched according to the operation time during use. Due to the large volume of the pump and the large water diversion volume, a long water diversion time is required during the switching process.

[0003] Now, the country emphasizes energy conservation, consumption reduction and sustainable development. Selecting a safe, reliable, economical and efficient pump product is a very important matter. Selecting a full-automatic vacuum water diversion and vacuum holding system can directly realize the automatic switching of the water pump, without waiting for the water diversion time, greatly improving the efficiency of the pump and ensuring reliable operation. Content of the Utility Model

[0004] Aiming at the above problems, the main purpose of the utility model is to provide a large-flow double-suction pump plus vacuum water diversion automatic holding device which can realize the purpose of automatically holding water pumping by a large-flow double-suction pump through the vacuum generated by the operation of a vacuum pump.

[0005] The utility model solves the above technical problems through the following scheme: A large-flow double-suction pump plus vacuum water diversion automatic holding device, the large-flow double-suction pump plus vacuum water diversion automatic holding device includes: a double-suction pump, a vacuum pump, an air extraction tank, a vacuum tank, and an integrated control box.

[0006] Double-suction pump, first solenoid valve, water inlet pipe, air extraction tank, low liquid level switch, high liquid level switch, second solenoid valve, inlet pipe of the vacuum tank, drain pipe, drain water pipe, vacuum tank, electric contact vacuum gauge, high liquid level alarm, communicating pipe solenoid valve, communicating pipe between the upper layer and the lower layer, vacuum-breaking solenoid valve, inlet pipe of the vacuum pump, vacuum pump, solenoid valve, working fluid pipeline, exhaust pipe, high liquid level switch of the vacuum tank, low liquid level switch of the vacuum tank, integrated control box.

[0007] The air extraction tank is installed on the water inlet pipeline of the double-suction pump. The air extraction tank is equipped with a high liquid level switch and a low liquid level switch. The high liquid level switch is located above the tank body, and the low liquid level switch is located below the tank body. The outlet of the air extraction tank is connected to the inlet of the vacuum tank; there is a solenoid valve at the top of the air extraction tank connected to the inlet pipeline of the vacuum tank.

[0008] The vacuum tank has two layers, upper and lower. There is a connecting pipe solenoid valve connecting the upper and lower layers. There is a high liquid level alarm on the upper layer, and a high liquid level switch and a low liquid level switch of the vacuum tank on the lower layer. There is a vacuum breaking solenoid valve at the upper end of the lower layer. The inlet pipe of the vacuum pump is connected to the outlet of the vacuum tank. The working liquid pipeline of the vacuum pump is equipped with a solenoid valve. The exhaust pipeline of the vacuum pump is directly discharged to the atmosphere. The large flow double suction pump plus the vacuum water priming automatic holding device is controlled by an integrated control box.

[0009] In a specific embodiment of the present invention, the high liquid level switch of the air extraction tank, the low liquid level switch of the air extraction tank, the high liquid level switch of the vacuum tank, the low liquid level switch of the vacuum tank, the high liquid level alarm, the electric contact vacuum gauge, the first solenoid valve, the second solenoid valve, the connecting pipe solenoid valve, the vacuum breaking solenoid valve and the water replenishing solenoid valve inside the vacuum system and on the air extraction tank are all connected to the integrated control box.

[0010] In a specific embodiment of the present invention, there is a branch pipe at the top of the double suction pump connected to the vacuum tank. During the operation of the water pump, the overflowing gas can be discharged at any time.

[0011] In a specific embodiment of the present invention, a vacuum water priming holding system is formed by the large flow double suction pump and the vacuum pump.

[0012] In a specific embodiment of the present invention, an automatic electric control system is formed by the vacuum pump motor, the liquid level switch, the electric contact vacuum gauge and the solenoid valve.

[0013] The positive and progressive effects of the present invention are as follows: The large flow double suction pump plus the vacuum water priming automatic holding device provided by the present invention uses a water ring vacuum pump to form a vacuum and is designed and manufactured into a new type of vacuum water priming and vacuum automatic holding system device. It mainly has the following four advantages: First, the double suction pump has a compact structure, beautiful appearance, good stability, and is convenient for installation and maintenance; Second, in the case of particularly large flow, the double suction pump has a large diameter, high head, more energy-saving, and particularly high efficiency; Third, using vacuum water priming solves the problem of starting the water pump, which is more convenient and reliable than other solutions; Fourth, using vacuum automatic holding realizes automatic control, can quickly start the double suction pump, and saves waiting time. In addition, the present invention is simple to manufacture, has a low cost, and is worthy of promotion and transformation application in water plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] The following are the names corresponding to the reference numerals in the present invention:

[0016] Double-suction pump 1, first solenoid valve 2, water inlet pipe 3, air extraction tank 4, low liquid level switch 5, high liquid level switch 6, second solenoid valve 7, inlet pipe 8, drain pipe 9, drain water pipe 10, vacuum tank 11, electric contact vacuum gauge 12, high liquid level alarm 13, connecting pipe solenoid valve 14, connecting pipe between upper and lower layers 15, vacuum-breaking solenoid valve 16, inlet pipe 17, vacuum pump 18, solenoid valve 19, working fluid pipeline 20, exhaust pipeline 21, high liquid level switch of vacuum tank 22, low liquid level switch of vacuum tank 23, integrated control box 24. Specific embodiments

[0017] The following presents the preferred embodiments of the present invention in conjunction with the accompanying drawings to elaborate in detail on the technical solutions of the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention. As Figure 1 shown: The large-flow double-suction pump plus vacuum water diversion automatic holding device provided by the present invention includes a double-suction pump 1, a vacuum pump 18, an air extraction tank 4, a vacuum tank 11, and an integrated control box 24. The air extraction tank 4 is installed on the inlet pipe 3 of the double-suction pump 1. One end of the inlet pipe 3 is connected to the double-suction pump 1 and the other end is located in the water tank; there is a solenoid valve 2 at the top of the double-suction pump 1 connected to the air inlet of the air extraction tank 4. The air extraction tank 4 is equipped with a high liquid level switch 6 and a low liquid level switch 5. The high liquid level switch 6 is located above the tank body of the air extraction tank 4, and the low liquid level switch 5 is located below the tank body of the air extraction tank 4. There is a solenoid valve 7 at the top of the air extraction tank 4 connected to the inlet pipe 8 of the vacuum tank 11; the vacuum tank 11 has upper and lower layers, and there is a connecting pipe solenoid valve 14 connecting the upper and lower layers. There is a high liquid level alarm 13 in the upper layer, and a high liquid level switch 22 and a low liquid level switch 23 of the vacuum tank in the lower layer. There is a vacuum-breaking solenoid valve 16 at the upper end of the lower layer; the inlet pipe 17 of the vacuum pump 18 is connected to the outlet of the vacuum tank 11. The working fluid pipeline 20 of the vacuum pump 18 is equipped with a solenoid valve 19, and the exhaust pipeline 21 of the vacuum pump 18 is directly discharged to the atmosphere. The large-flow double-suction pump plus vacuum water diversion automatic holding device is controlled by the integrated control box 24.

[0019] The start and stop of the double-suction pump 1 are controlled by the water pump control cabinet; the high liquid level switch 6, low liquid level switch 5 in the vacuum system and on the air extraction tank 4, the high liquid level switch 22 of the vacuum tank, low liquid level switch 23 of the vacuum tank, high liquid level alarm 13, electric contact vacuum gauge 12, solenoid valve 2, solenoid valve 7, connecting pipe solenoid valve 14, vacuum-breaking solenoid valve 16 and water replenishing solenoid valve 19 are controlled by the vacuum system integrated control cabinet 24.

[0020] When initially diverting water, the vacuum pump 18 operates (manually pre-fill the vacuum pump 18 with water before starting). All solenoid valves are normally closed. The double-suction pump 1 is evacuated to divert water. The vacuum pump 18 starts, and the first solenoid valve 2, the second solenoid valve 7, the connecting pipe solenoid valve 14, and the solenoid valve 19 open to start diverting water. The start and stop of the vacuum pump 18 are controlled by the signal of the electric contact vacuum gauge 12 on the vacuum tank 11. It stops when the high set value is reached and starts when the low set value is reached. The solenoid valve 19 on the make-up water pipeline is interlocked with the vacuum pump 18. When the vacuum pump 18 is on, the solenoid valve 19 is on; when the vacuum pump 18 is off, the solenoid valve 19 is off. When the high-level switch 6 in the air extraction tank 4 is reached, the double-suction pump chamber and the suction pipeline are filled with water, and the water diversion is completed. The outlet solenoid valve 7 of the air extraction tank 4 is closed, and at the same time, a feedback signal is sent to the water pump control cabinet to start the double-suction pump 1, and the double-suction pump 1 is in the standby state. When the liquid level in the air extraction tank 4 reaches the low-level switch 5, the outlet solenoid valve 7 of the air extraction tank 4 is opened to start diverting water. When the double-suction pump 1 is in standby, the solenoid valve 2 is in the open state, and when the double-suction pump 1 is running, the solenoid valve 2 is closed. The vacuum tank 11 is divided into an upper and a lower layer structure. The upper layer is the vacuum chamber, and the lower layer is the drain chamber. The upper layer and the lower layer are connected by the connecting pipe 15 solenoid valve 14 and the drain pipe 10. When the vacuum water diversion automatic holding device is running, the connecting pipe solenoid valve 14 is in the open state. The water in the upper vacuum chamber automatically drains into the drain chamber through the drain pipe 10 according to its own weight. When the liquid level in the drain chamber reaches the high-level switch 22 of the vacuum tank, the connecting pipe solenoid valve 14 is closed, and the vacuum-breaking solenoid valve 16 is opened. The water in the drain chamber automatically drains through the drain pipe 9 according to its own weight. When the liquid level in the drain chamber reaches the low-level switch 23 of the vacuum tank, the vacuum-breaking solenoid valve 16 is closed, and the connecting pipe solenoid valve 14 is opened. When the liquid level in the vacuum chamber reaches the high-level alarm 13, the control cabinet 24 displays an alarm signal.

[0021] The utility model has a compact structure, beautiful appearance, good stability, and is convenient for installation and maintenance. In the case of particularly large flow rates, the double-suction pump of the utility model has a large diameter and high head, is more energy-saving, and has a particularly high efficiency. The utility model uses vacuum water diversion to solve the problem of starting the water pump, which is more convenient and reliable than other solutions. The utility model uses vacuum automatic holding to achieve automatic control, can quickly start the double-suction pump, and saves waiting time. In addition, the utility model is simple to manufacture, has a low cost, and is worthy of promotion and transformation in water plants.

[0022] The above shows and describes the basic principles, main features, and advantages of the utility model. Those skilled in the art of this industry should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A large flow double suction pump plus vacuum water automatic holding device, characterized in that: The large flow double-suction pump plus vacuum water diversion automatic holding device comprises: a double-suction pump, a vacuum pump, a vacuum tank, a vacuum tank, and an integrated control box; Double-suction pump, first solenoid valve, water inlet pipe, vacuum tank, low liquid level switch, high liquid level switch, second solenoid valve, vacuum tank inlet pipe, drain pipe, drain pipe, vacuum tank, electric contact vacuum gauge, high liquid level alarm, connecting pipe solenoid valve, connecting pipe between upper and lower layers, vacuum breaking solenoid valve, vacuum pump inlet pipe, vacuum pump, solenoid valve, working fluid pipeline, exhaust pipeline, vacuum tank high liquid level switch, vacuum tank low liquid level switch, integrated control box; The vacuum tank is installed on the water inlet pipeline of the double-suction pump. The vacuum tank is equipped with a high liquid level switch and a low liquid level switch. The high liquid level switch is located above the tank body, and the low liquid level switch is located below the tank body. The outlet of the vacuum tank is connected to the inlet of the vacuum tank. The top of the vacuum tank is equipped with a solenoid valve connected to the inlet pipe of the vacuum tank. The vacuum tank has two layers, the upper and lower layers are connected by a connecting pipe solenoid valve. The upper layer has a high liquid level alarm, the lower layer has a vacuum tank high liquid level switch and a vacuum tank low liquid level switch, and the upper end of the lower layer has a vacuum breaking solenoid valve; the inlet pipe of the vacuum pump is connected to the outlet of the vacuum tank, the working fluid pipeline of the vacuum pump is equipped with a solenoid valve, the exhaust pipeline of the vacuum pump is directly discharged to the atmosphere, and the large-flow double-suction pump plus the vacuum water automatic holding device are controlled by an integrated control box; The vacuum system and the vacuum tank high liquid level switch, vacuum tank low liquid level switch, vacuum tank high liquid level switch, vacuum tank low liquid level switch, high liquid level alarm, electric contact vacuum gauge, first solenoid valve, second solenoid valve, connecting pipe solenoid valve, vacuum breaking solenoid valve and water supply solenoid valve are all connected to the integrated control box; There is a pipe on the top of the double-suction pump connected to the vacuum tank, which can remove the overflowed gas at any time when the pump is running; Vacuum water diversion and maintenance system formed by large flow double suction pump and vacuum pump; An automatic electronic control system formed by a vacuum pump motor, a liquid level switch, an electric contact vacuum gauge, and a solenoid valve.

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