CN211202302U - Multistage roots pump vacuum economizer system - Google Patents

Abstract

The utility model discloses a multi-stage roots pump vacuum energy-saving system, which belongs to the technical field of vacuum pumping. Including: a vacuum tank, several Roots vacuum pumps, several motors, and a frame, several Roots vacuum pumps are installed on the frame, each motor is drivingly connected to one of the Roots vacuum pumps, and several Roots vacuum pumps are connected with the vacuum tank through pipes. The multi-stage Roots pump vacuum energy-saving system provided by the utility model utilizes the characteristics of high efficiency of the Roots vacuum pump, and adopts the multi-stage Roots vacuum pump to share the pressure difference, thereby realizing further energy saving on the basis of ensuring reliable operation. , reduce emissions, thereby reducing costs and protecting the environment.

Description

A vacuum energy-saving system of a multi-stage roots pump

technical field

The utility model relates to the technical field of vacuum pumping, in particular to a vacuum energy-saving system of a multi-stage roots pump.

Background technique

At present, the liquid ring vacuum pump system is widely used in the application of desulfurization process in power plants. Although the system can meet the vacuum degree requirements in the current power plant desulfurization process application, but in the power plant desulfurization process conditions, a single liquid ring vacuum pump system consumes a lot of electricity, water, floor space and noise. , High maintenance cost.

Utility model content

In view of the above problems existing in the prior art, the aim is to provide a multi-stage Roots pump vacuum energy-saving system, which is mainly used in the vacuuming process of the gypsum dehydrator in the desulfurization process of the power plant, and can reduce energy consumption. The dry system can save water and improve the stability and reliability of the vacuum system.

The specific technical solutions are as follows:

A multi-stage Roots pump vacuum energy-saving system, comprising: a vacuum tank, a plurality of Roots vacuum pumps, a plurality of motors, and a frame, a plurality of Roots vacuum pumps are installed on the frame, and each motor is drivingly connected to one of the Roots vacuum pumps, Several Roots vacuum pumps are connected to the vacuum tank through pipes.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that several Roots pumps are divided into several stages, and two adjacent Roots vacuum pumps are connected in series with each other, and adjacent Roots vacuum pumps are connected to each other through pipes. The suction port of the roots vacuum pump at the head end is communicated with the vacuum tank through a pipeline.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that each stage Roots vacuum pump can be a single Roots vacuum pump or multiple Roots vacuum pumps in parallel, and the adjacent Roots vacuum pumps pass through each other. The pipes are connected to each other.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that a particulate matter blocking device is arranged inside the vacuum tank.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the following characteristics, and further includes a plurality of heat exchangers, and heat exchangers are arranged between two adjacent stages of Roots vacuum pumps.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that the frame is a section steel welded part.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that a plurality of motors are connected in communication with a control system.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that a motor is connected to the outside of each Roots vacuum pump.

The above-mentioned multi-stage Roots pump vacuum energy-saving system also has the feature that the Roots vacuum pump can be any type of Roots vacuum pump, including but not limited to ordinary double-blade Roots pumps, air-cooled Roots pumps, and the like.

The above-mentioned multi-stage roots pump vacuum energy-saving system also has such a feature, and further includes a pressure and temperature instrument, which is connected in series in each pipeline to monitor the operation state of the system equipment.

The positive effects of the above technical solutions are:

The utility model provides a multi-stage Roots pump vacuum energy-saving system. In the desulfurization gypsum dehydration process of a power plant, the multi-stage Roots vacuum pump is used to share the pressure difference by utilizing the high efficiency of the Roots vacuum pump, thereby realizing the On the basis of ensuring reliable operation, it can further save energy and reduce emissions, thereby reducing costs and protecting the environment.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of a multi-stage Roots pump vacuum energy-saving system of the present invention.

In the attached drawings: 1. Roots vacuum pump 1; 2. Roots vacuum pump 2; 3. Motor; 4. Pipeline; 5. Vacuum tank.

Detailed ways

In order to make it easier to understand the technical means, creative features, goals and effects realized by the present invention, the following embodiment will specifically describe a multi-stage roots pump vacuum energy-saving system provided by the present invention in conjunction with FIG. 1 .

1 is a schematic structural diagram of an embodiment of a multi-stage Roots pump vacuum energy-saving system of the present invention; in this embodiment, the multi-stage Roots pump vacuum energy-saving system mainly includes Roots vacuum pump-1, Roots vacuum pump 2. Motor 3, pipeline 4, vacuum tank 5.

In a multi-stage Roots pump vacuum energy-saving system, the system is mainly used in the vacuuming process of gypsum dehydrator in the desulfurization process of power plants. Roots vacuum pump 1 and Roots vacuum pump 2 are installed on the frame, and two motors 3 are respectively connected with Roots vacuum pump 1 and Roots vacuum pump 2 2. The rotor in the Roots vacuum pump is driven by a motor to rotate. Roots vacuum pump 1 and Roots vacuum pump 2 are connected with vacuum tank 5 through pipeline 4.

In a preferred embodiment, as shown in FIG. 1 , several Roots vacuum pumps are divided into two stages, including Roots vacuum pump 1 and Roots vacuum pump 2 2, wherein Roots vacuum pump 1 and Roots vacuum pump 2 2 are connected in series, the two groups of pumps are connected to each other through the pipeline 4, the suction port of the roots vacuum pump-1 at the head end is connected to the vacuum tank 5 through the pipeline 4, and the suction port of the roots vacuum pump-1 at the head end passes through The pipeline communicates with the vacuum tank 5 .

In a preferred embodiment, Roots vacuum pump 1 or Roots vacuum pump 2 2 can be formed by a single Roots vacuum pump or multiple Roots vacuum pumps in parallel, and between adjacent Roots vacuum pumps in each stage communicate with each other through pipes.

In a preferred embodiment, as shown in FIG. 1 , the vacuum tank 5 is generally a gypsum dehydrator vacuum tank, and a particulate matter blocking device is arranged inside the vacuum tank 5 to prevent external impurities from entering the inside of the Roots vacuum pump and avoid Affect the operation of the Roots vacuum pump.

In a preferred embodiment, as shown in FIG. 1 , several heat exchangers are also included, and heat exchangers are arranged between two adjacent stages of Roots vacuum pumps (1, 2) to dissipate the heat in the connecting pipes into the air to avoid excessive concentration of heat in the Roots vacuum pump to affect its normal operation.

In a preferred embodiment, as shown in FIG. 1 , the frame is a welded steel section.

In a preferred embodiment, as shown in FIG. 1 , the two motors 3 are connected in communication with a control system (not shown in the figure), and the control system can control the opening and closing of the two motors 3 uniformly.

In a preferred embodiment, as shown in FIG. 1 , a motor 3 is connected to the outside of each Roots vacuum pump (1, 2).

In a preferred embodiment, as shown in FIG. 1 , the Roots vacuum pump can be any type of Roots vacuum pump, and the Roots vacuum pump is an air-cooled Roots vacuum pump; or the Roots vacuum pump is a water-cooled Roots vacuum pump; or The Roots vacuum pump is a rotor internal cooling Roots vacuum pump; or the Roots vacuum pump is a rotor oil film cooling Roots vacuum pump, preferably an air-cooled Roots vacuum pump. Set up dense cooling fins at the exhaust port of the Roots vacuum pump, and the cooling fins are cooled by cold water pipes, or directly install cooling water pipes at the exhaust port of the pump, so that the gas at the exhaust port will be cooled. The method can effectively dissipate the load generated by the rotor of the Roots pump in the compressed gas.

In a preferred embodiment, as shown in FIG. 1 , a pressure and temperature instrument is also included, and the pressure and temperature instrument is connected in series in each pipeline to monitor the operation status of each device in the system.

Hereinafter, a specific embodiment will be used for description. It should be pointed out that the structure, process and material selection described in the following embodiment are only used to illustrate the feasibility of the embodiment, and are not intended to limit the protection scope of the present invention.

The multi-stage Roots pump vacuum energy-saving system adopts two-pole Roots vacuum pumps arranged in series. Roots vacuum pump 1 and Roots vacuum pump 2 are driven by one motor respectively. Roots vacuum pump 1, Roots vacuum pump 2 and two motors are installed on the rack. and the suction port of Roots vacuum pump 1 is connected with the vacuum system (ie vacuum tank) of the gypsum dehydrator, the exhaust port of Roots vacuum pump 1 is connected with the suction port of Roots vacuum pump 2 through a pipeline, in addition, the Roots vacuum pump The exhaust ports of the first and the second roots vacuum pump are provided with heat exchangers, which are used to dissipate the heat in the roots vacuum pump. Taking advantage of the high efficiency of the roots vacuum pump, the two-stage roots vacuum pump is used to share the pressure difference, so as to achieve In order to further save energy and reduce emissions on the basis of ensuring reliable operation, so as to reduce costs and protect the environment.

The above are only the preferred embodiments of the present utility model, and are not intended to limit the embodiments and protection scope of the present utility model. Those skilled in the art should be able to realize that any changes made by using the contents of the description and illustrations of the present utility model The solutions obtained from equivalent replacements and obvious changes shall all be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a multistage lobe pump vacuum economizer system which characterized in that includes: the vacuum pump comprises a vacuum tank, a plurality of roots vacuum pumps, a plurality of motors and a rack, wherein the roots vacuum pumps are installed on the rack, each motor is in driving connection with one of the roots vacuum pumps, and the roots vacuum pumps are communicated with the vacuum tank through pipelines.

2. The vacuum energy-saving system for the multistage roots pumps as claimed in claim 1, wherein the roots pumps are divided into a plurality of stages, adjacent roots vacuum pumps are connected in series, the adjacent roots vacuum pumps are communicated with each other through a pipeline, and the suction port of the roots vacuum pump at the head end is communicated with the vacuum tank through a pipeline.

3. The vacuum energy-saving system for the multistage roots pump as claimed in claim 2, wherein each stage of the roots vacuum pump can be a single roots vacuum pump or a plurality of roots vacuum pumps connected in parallel, and adjacent roots vacuum pumps are communicated with each other through pipelines.

4. The vacuum energy-saving system for the multistage roots pump as claimed in claim 1, wherein a particulate matter blocking device is arranged inside the vacuum tank.

5. The vacuum energy-saving system for the multi-stage roots pump as claimed in claim 1, further comprising a plurality of heat exchangers, wherein the heat exchangers are arranged between the adjacent two stages of the roots vacuum pumps.

6. The vacuum economizer system for multistage roots pumps as claimed in claim 1 wherein the frame is a profile steel weldment.

7. The vacuum energy saving system for multi-stage roots pumps as claimed in claim 1, wherein the plurality of motors are communicatively connected to a control system.

8. The vacuum energy-saving system for multi-stage roots pumps as claimed in claim 1, wherein the motor is connected to the outside of each roots vacuum pump.

9. The vacuum energy-saving system for the multi-stage roots pump as claimed in claim 1, wherein the roots vacuum pump can be any type of roots vacuum pump.

10. The vacuum energy-saving system for the multistage roots pump as claimed in claim 1, further comprising pressure and temperature instruments which are connected in series in each pipeline.

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