CN204704120U - Dual drive resilience circulating water pump unit - Google Patents

Abstract

The utility model provides a double-drive energy-returning circulating water pump unit capable of recovering the residual pressure energy of circulating water return water, which includes a water pump (1) and a motor (2), and also includes a first overrunning coupling (3), Second overrunning coupling (4), hydraulic turbine (5), motor (2), first overrunning coupling (3), water pump (1), second overrunning coupling (4), hydraulic The turbines (5) are connected in sequence, the inlet end of the hydraulic turbine (5) is used to connect with the first return pipe (6) of the circulating water delivery device, and the outlet end of the hydraulic turbine (5) is used to connect with the The second water return pipe (7) of the circulating water delivery device is connected, and the pressure of the first water return pipe (6) is greater than the pressure of the second water return pipe (7). The hydraulic turbine of the utility model converts the residual pressure energy of the return water into mechanical motion to drive the water pump, which has the advantage of recovering the residual pressure energy of the return water, thereby enabling the construction of an industrial cycle that can be stabilized and closed-loop recovered the residual pressure energy of the circulating water return water Water delivery device made possible.

Description

Double drive energy recovery circulating water pump unit

technical field

The utility model relates to the technical field of industrial circulating water conveying devices, in particular to a double-drive return energy circulating water pump unit, which is suitable for recovering the residual pressure energy of circulating water backwater.

Background technique

There are many energy-consuming links in industrial circulating water delivery devices, such as motor heating, wind friction, internal friction energy consumption of water pumps, water pump outlet valve throttling and depressurization energy consumption, water pipeline network friction resistance loss energy, etc., some energy consumption It cannot be eliminated or recycled. In order to reduce consumption and save energy, it is necessary to focus on improving the parts that can be eliminated or recycled.

At present, the circulating water pump unit is the key water supply equipment in the industrial circulating water delivery device. The structure of the circulating water pump unit is generally composed of a motor connected to a water pump. The circulating water pump unit has the potential to save energy and reduce consumption, but the current structure is obviously impossible. Therefore, the design A circulating water pump unit for recovering the residual pressure energy of the circulating water backwater has become an important subject and needs to be studied and realized.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a dual-drive energy-returning circulating water pump unit capable of recovering the residual pressure energy of the circulating water backwater, so that the construction can be stabilized and the closed-loop recovery of the circulating water backwater residual Pressure energy industrial circulating water delivery device becomes possible.

The purpose of this utility model can be achieved through the following technical solutions:

A dual-drive energy recovery circulating water pump unit, which includes a water pump and a motor, and also includes a first overrunning coupling, a second overrunning coupling, a hydraulic turbine, a motor, a first overrunning coupling, a water pump, and a second overrunning coupling 2. The overrunning coupling and the hydraulic turbine are connected in sequence. The inlet end of the hydraulic turbine is used to connect with the first return pipe of the circulating water delivery device, and the outlet end of the hydraulic turbine is used to connect with the circulating water delivery device. The second return pipe is connected, and the pressure of the first return pipe is greater than the pressure of the second return pipe.

The working principle of the utility model is that the residual pressure energy of the first return water pipe in the circulating water is greater than the pressure of the second return water pipe to drive the hydraulic turbine, and the hydraulic turbine converts the residual pressure energy of the return water into mechanical motion Drive the water pump and cooperate with the motor to realize dual drive, so as to achieve the purpose of saving energy and reducing consumption.

Compared with the prior art, the utility model has the following advantages:

The hydraulic turbine converts the residual pressure energy of the return water into mechanical motion to drive the water pump, so that the utility model has the advantage of recovering the residual pressure energy of the return water, thereby enabling the construction of an industrial cycle that can stably and close-loop recover the residual pressure energy of the circulating water return water Water delivery device made possible.

As an improvement, there is an energy storage flywheel between the second overrunning coupling and the hydraulic turbine, and the second overrunning coupling, the energy storage flywheel, and the hydraulic turbine are connected in sequence, so that the energy storage flywheel has a certain adjustment effect , making the whole operation smoother.

As an improvement, the water pump is a single-stage double-suction centrifugal pump with double-shaft extensions. The motor, the first overrunning coupling, and the right input end of the double-shaft extension are connected in sequence, and the left input end of the double-shaft extension and the second overrunning coupling are connected in sequence. In this way, the motor, the first overrunning coupling, the water pump, the second overrunning coupling, the energy storage flywheel and the hydraulic turbine can be coaxially arranged, and the water pump is basically Located in the middle position, it has a compact structure, a small footprint, convenient layout, low equipment cost, small investment, and high recovery efficiency of return water residual pressure.

As an improvement, the hydraulic turbine is a mixed-flow horizontal turbine, which has high conversion efficiency and is more conducive to energy saving and consumption reduction.

As an improvement, both the first overrunning coupling and the second overrunning coupling are one-way overrunning diaphragm couplings, which have the advantages of reliable performance and long life.

As an improvement, the outlet end of the hydraulic turbine is connected to the outlet end of the water pump through a pipeline, and a valve is installed on the pipeline, so that by adjusting the opening of the valve to increase or decrease the load of the water pump, the speed of the hydraulic turbine can be adjusted to prevent hydraulic damage. During the start-up process of the turbine, the no-load water pump was driven, resulting in a high-speed speeding accident.

Description of drawings

Fig. 1 is the structural representation of the utility model;

As shown in the figure, 1. water pump, 2. motor, 3. first overrunning coupling, 4. second overrunning coupling, 5. hydraulic turbine, 6. first return pipe, 7. second return pipe Water pipe, 8, energy storage flywheel, 9, valve.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

The dual-drive energy recovery circulating water pump unit described in this embodiment includes a water pump 1 and a motor 2, and it also includes a first overrunning coupling 3, a second overrunning coupling 4, a hydraulic turbine 5, a motor 2, The first overrunning coupling 3, the water pump 1, the second overrunning coupling 4, and the hydraulic turbine 5 are connected in sequence, and the water inlet end of the hydraulic turbine 5 is used to connect with the first return pipe 6 of the circulating water delivery device Connection, the outlet end of the hydraulic turbine 5 is used to connect with the second return pipe 7 of the circulating water delivery device, the pressure of the first return pipe 6 is greater than the pressure of the second return pipe 7, and the first return pipe 6 can be transported from the circulating water A branch pipe connected from the return water main pipe of the device, the second return water pipe 7 can be a branch pipe connected from the pipe section after the upper tower branch pipe valve of the cooling water tower of the circulating water delivery device, that is, it is located near the upper tower branch pipe valve. A branch pipe connected to the pipe at one end of the water tank.

An energy storage flywheel 8 is arranged between the second overrunning coupling 4 and the hydraulic turbine 5, and the second overrunning coupling 4, the energy storage flywheel 8, and the hydraulic turbine 5 are connected in sequence.

The water pump 1 is a single-stage double-suction medium-boiling water pump 1 with double-shaft extension. The double-shaft extension means that the left and right ends of the input shaft of the water pump 1 protrude respectively, and both ends can be connected with external power as input. The motor 2 and the first overrunning coupling 3, the left input end of the biaxial extension is connected in sequence, the right input end of the biaxial extension, the second overrunning coupling 4, the energy storage flywheel 8, and the hydraulic turbine 5 are connected in sequence, and the motor 2 and the first overrunning The shaft coupling 3 and the left input end of the biaxial extension are connected in sequence, and the right input end of the biaxial extension, the second overrunning coupling 4, the energy storage flywheel 8, and the hydraulic turbine 5 are arranged coaxially.

The hydraulic turbine 5 is a mixed-flow horizontal water turbine.

Both the first overrunning coupling 3 and the second overrunning coupling 4 are one-way overrunning diaphragm couplings.

The water outlet end of the hydraulic turbine 5 is connected to the water outlet end of the water pump 1 through a pipeline. There is a valve 9 on the pipeline. During the start-up process, by adjusting the opening of the valve 9 to increase or decrease the load of the water pump 1, the speed of the hydraulic turbine 5 can be adjusted so that Prevent the hydraulic turbine 5 from driving the no-load water pump 1 during the start-up process to cause a high-speed overrun accident.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (6)

1. a Dual Drive resilience circulating water pump unit, it comprises water pump (1) and motor (2), it is characterized in that, it also comprises first and surmounts coupling (3), second surmounts coupling (4), hydraulic turbine (5), motor (2), first surmounts coupling (3), water pump (1), second surmounts coupling (4), hydraulic turbine (5) sequentially connects, the feed-water end of hydraulic turbine (5) is used for being connected with first return pipe (6) of circulating water feedway, the waterexit end of hydraulic turbine (5) is used for being connected with second return pipe (7) of circulating water feedway, first return pipe (6) pressure is greater than the second return pipe (7) pressure.

2. Dual Drive resilience circulating water pump unit according to claim 1, it is characterized in that, second surmounts between coupling (4) and hydraulic turbine (5) and is provided with accumulated energy flywheel (8), second surmounts coupling (4), accumulated energy flywheel (8), hydraulic turbine (5) sequentially connect.

3. Dual Drive resilience circulating water pump unit according to claim 2, it is characterized in that, the single-stage double-suction middle-opening water pump (1) that water pump (1) is Double shaft-extension, motor (2), first surmounts coupling (3), the left input end of Double shaft-extension sequentially connects, and the right input end, second of Double shaft-extension surmounts coupling (4), accumulated energy flywheel (8), hydraulic turbine (5) sequentially connect.

4. Dual Drive resilience circulating water pump unit according to claim 1, is characterized in that, hydraulic turbine (5) is mixed-flow horizontal water turbine.

5. Dual Drive resilience circulating water pump unit according to claim 1, is characterized in that, first surmounts coupling (3), second surmounts coupling (4) and be mono-directional overrun diaphragm coupling.

6. Dual Drive resilience circulating water pump unit according to claim 1, is characterized in that, the waterexit end of hydraulic turbine (5) and the waterexit end of water pump (1) are by pipeline connection, and this pipeline is provided with valve (9).