阅读说明：本技术 一种节能压缩机组及其节能方法 (Energy-saving compressor unit and energy-saving method thereof ) 是由 潘海新 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种节能压缩机组及其节能方法,包括压缩机、气缸,与气缸连接有转换机构、变速器与发电机组；将第一级气体压缩机规定为气缸输入端的输入气源,第二级的气体压缩机为用于气缸的驱动气体尾气的增压的压缩机；来自第一级气体压缩机的容积流量气体先进入气缸,对气缸充气,充气时对大气压形成气压差,利用这个气压差驱动发电机组发电,充气完成后关闭进气阀门,同时打开排气阀门,使用第二级气体压缩机将气缸内气体(气缸驱动气体)增压到目标气压后输出。由于气缸在工作过程中带动发电机组持续产生电能,并把这些电能回馈给压缩机组,可以使得压缩机组所需从电网输入电源减少,以此来达到节能省电目的,相当于提高了压缩机组效率。(The invention discloses an energy-saving compressor unit and an energy-saving method thereof, wherein the energy-saving compressor unit comprises a compressor, an air cylinder, a switching mechanism, a transmission and a generator set, wherein the air cylinder is connected with the switching mechanism; the method comprises the following steps of defining a first stage gas compressor as an input gas source at the input end of a cylinder, and defining a second stage gas compressor as a compressor for boosting tail gas of driving gas of the cylinder; the volume flow gas from the first stage gas compressor firstly enters the cylinder, the cylinder is inflated, a pressure difference is formed to atmospheric pressure during inflation, the pressure difference is utilized to drive the generator set to generate electricity, the air inlet valve is closed after inflation is completed, the exhaust valve is opened at the same time, and the gas in the cylinder (the cylinder driving gas) is pressurized to a target pressure by the second stage gas compressor and then is output. The cylinder drives the generator set to continuously generate electric energy in the working process and feeds the electric energy back to the compressor set, so that the input power supply of the compressor set from a power grid is reduced, the purposes of saving energy and electricity are achieved, and the efficiency of the compressor set is improved.)

1. An energy-saving compressor unit and an energy-saving method thereof comprise an energy-saving power generation unit, wherein the energy-saving power generation unit comprises a cylinder, a first-stage gas compressor and a second-stage gas compressor, and the cylinder is respectively provided with a driving gas inlet, a driving gas outlet and a mechanical output end; the method is characterized in that: the driving gas inlet is communicated with the gas outlet of the first-stage gas compressor through an input pipeline, and the driving gas outlet is communicated with the gas inlet of the second-stage gas compressor through an output pipeline; the input pipeline and the output pipeline are respectively provided with a control valve; the mechanical output end is connected with a conversion mechanism, the conversion mechanism is connected with a generator set, and the generator set is connected into an input power supply through a power transmission circuit;

the energy-saving method comprises the following steps: the volume flow gas of the first-stage gas compressor firstly enters the cylinder, the cylinder is inflated to form driving gas, when the cylinder is inflated, a pressure difference is formed between the atmospheric pressure outside the cylinder, the generating set is driven to generate electricity by utilizing the pressure difference, the generated electricity is fed back to the compressor set, the electric energy required by the compressor set from a power grid is reduced, and the purpose of energy conservation is achieved; and after the inflation is finished, closing the control valve on the air inlet pipe, and simultaneously opening the control valve on the output pipeline, so that the driving gas enters the second-stage gas compressor and is output after the driving gas is pressurized to the target air pressure by using the second-stage gas compressor.

2. The energy saving compressor set and the energy saving method as claimed in claim 1, further comprising an air storage tank, wherein the air storage tank is communicated with the exhaust port of the second stage gas compressor.

3. An energy-saving compressor unit and an energy-saving method thereof as claimed in claim 1, wherein the driving gas inlet end is connected in parallel with two communicating branches, and the two communicating branches are respectively provided with a control valve; two communicating branches are connected in parallel at the end of the driving gas exhaust port, and control valves are respectively arranged on the two communicating branches.

4. The energy-saving compressor unit and the energy-saving method thereof according to claim 1, wherein sensors are connected to both ends of the cylinder.

5. The compressed air energy-releasing power generation system as set forth in claim 1, wherein: and a transmission is connected between the generator set and the conversion mechanism.

6. The energy-saving compressor unit and the energy-saving method thereof according to claim 1, wherein a plurality of the energy-saving power generation units are connected in series.

7. The energy-saving compressor unit and the energy-saving method thereof according to claim 1, wherein the input pipeline and the output pipeline are respectively connected with a gas pressure sensor.

8. An energy-saving compressor unit and an energy-saving method thereof as claimed in claim 1, wherein the energy-saving compressor unit comprises a plurality of cylinder units which are used in parallel.

Technical Field

The invention relates to the technical field of energy storage and energy conservation, in particular to an energy-saving compressor unit and an energy-saving method thereof.

Background

With the continuous progress and scientific development of society, energy conservation becomes more and more a topic of concern for people. In recent years, the popularization of energy-saving products is continuously increased in China, the air compressor is used as a product applied to multiple fields, the promotion of the energy-saving products has great significance to the energy-saving industry of China, although people make many efforts for reducing the energy consumption of a compressed air system, the compressed air system still is the ' big head ' of the power consumption of many industrial enterprises under the existing condition, the problem of heating loss caused by gas mechanical compression cannot be broken through no matter a proper air compressor model is selected, the parameter configuration is optimized, a variable frequency speed control technology, a centralized control technology, a waste heat recovery technology and the like, theoretical breakthrough and corresponding practical research are lacked in the source of compressed air production and preparation, only the idea of reducing the loss in the processes of preparation, transportation and use is tried, and a ' ceiling ' with improved efficiency ' is inevitably existed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an energy-saving compressor unit and an energy-saving method thereof, which can reduce the input of electric energy under the conditions of the same exhaust port pressure and the same volume flow, save the electric energy, equivalently improve the efficiency of a compressor system and reduce the energy consumption.

In order to achieve the above purpose, the invention provides an energy-saving compressor unit and an energy-saving method thereof, comprising an energy-saving power generation unit, wherein the energy-saving power generation unit comprises a cylinder, a conversion mechanism and a power generation unit, a first-stage gas compressor, a second-stage gas compressor and an input power supply, the input power supply is electrically connected with the first-stage gas compressor and the second-stage gas compressor, and the cylinder is respectively provided with a driving gas inlet, a driving gas outlet and a mechanical output end; the driving gas inlet is communicated with the gas outlet of the first-stage gas compressor through an input pipeline, and the driving gas outlet is communicated with the gas inlet of the second-stage gas compressor through an output pipeline; the input pipeline and the output pipeline are respectively provided with a control valve; the mechanical output end is connected with a conversion mechanism, the conversion mechanism is connected with a generator set, and the generator set is connected into the input power supply through a power transmission circuit.

Wherein the exhaust of the first stage gas compressor is defined as the input gas source and the second stage gas compressor is the compressor for the pressurization of the driving gas for the cylinder; the working process is as follows: the volume flow gas from the first stage gas compressor firstly enters the cylinder, the cylinder is inflated, a pressure difference is formed to atmospheric pressure during inflation, the pressure difference is utilized to drive the generator set to generate electricity, the air inlet valve is closed after inflation is completed, the exhaust valve is opened at the same time, and the gas in the cylinder (the cylinder driving gas) is pressurized to a target pressure by the second stage gas compressor and then is output. The cylinder drives the generator set to continuously generate electric energy in the working process and feeds the electric energy back to the compressor set, so that the power supply required to be input from a power grid of the compressor set can be reduced, the aims of saving energy and electricity are achieved, and the efficiency of the compressor system is improved; the cylinder units are connected in parallel for application, so that the purpose of large-flow output can be realized, and the applicability of the invention is improved.

Further, still include the gas holder, the gas holder with second grade gas compressor gas vent intercommunication.

Furthermore, two communicating branches are connected in parallel at the gas inlet end of the driving gas, and control valves are respectively arranged on the two communicating branches; two communicating branches are connected in parallel at the end of the driving gas exhaust port, and control valves are respectively arranged on the two communicating branches;

furthermore, a sensor is arranged on the cylinder, and the control valve is automatically opened and closed through feedback of the sensor, so that continuous movement of the cylinder is guaranteed.

Furthermore, a plurality of energy-saving power generation units are connected in series/in parallel, and the plurality of energy-saving power generation units are connected in series/in parallel, so that higher target output pressure and output flow can be achieved, and the applicability of the energy-saving power generation unit is improved.

Further, the input and output pipelines are respectively connected with a gas pressure sensor; the working state of each compressor is controlled through the feedback of the pressure sensor.

The invention has the beneficial effects that: the invention discloses an energy-saving compressor unit and an energy-saving method thereof, and the energy-saving principle is as follows: the volume flow gas from the first stage gas compressor firstly enters the cylinder, the cylinder is inflated, when the cylinder is inflated, a pressure difference is formed between the atmospheric pressure outside the cylinder, the pressure difference is utilized to drive the generator set to generate electricity, after the inflation is completed, the air inlet valve is closed, the exhaust valve is opened, and the gas inside the cylinder (the cylinder driving gas) is pressurized to the target pressure by using the second stage gas compressor and then is output. The cylinder drives the generator set to continuously generate electric energy in the working process and feeds the electric energy back to the compressor set, so that the input power of a power grid required by the compressor set can be reduced, the purposes of saving energy and electricity are achieved, and the efficiency of the compressor system is improved; the air cylinder units are connected in parallel to realize large-flow output, and the energy-saving power generation units are connected in series to realize higher air pressure output, so that the applicability of the invention is improved.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a block diagram of an economizer compressor system according to an embodiment of the present invention;

fig. 2 is a block diagram of an economizer compressor system with cylinder units connected in parallel according to an embodiment of the present invention.

FIG. 3 is a block diagram of a tandem economizer compressor system according to an embodiment of the present invention.

In the drawing, a cylinder 1, a driving gas inlet 11, a driving gas outlet 12, a mechanical output end 13, a first-stage gas compressor 2, a second-stage gas compressor 3, a gas storage tank 4, a frequency converter 5, a conversion mechanism 6, a transmission 7, a generator set 8 and an input power supply 9.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

As shown in fig. 1, an embodiment of the present invention is an energy-saving compressor unit and an energy-saving method thereof, including an energy-saving power generation unit, where the energy-saving power generation unit includes a cylinder 1, a conversion mechanism 6, a transmission 7, a generator set 8, a first-stage gas compressor 2, a second-stage gas compressor 3, and an input power supply 9, and the energy-saving power generation unit includes a cylinder 1, and the cylinder 1 has a driving gas inlet 11, a driving gas outlet 12, and a mechanical output 13; the driving gas inlet 11 is communicated with an exhaust port of the first-stage gas compressor 2 through an input pipeline respectively, and a control valve is arranged on the input pipeline; the driving gas exhaust port 12 is communicated with the gas inlet of the second-stage gas compressor 3 through an output pipeline, and control valves are respectively arranged on the output pipelines; through opening and closing of control valves K1, K2, K3 and K4, the communication channels at two ends of the cylinder 1 are switched between an air inlet and an air outlet, namely K2 and K3 are closed when K1 and K4 are opened, a K1 end is used as a driving gas inlet 11, and a K4 end is used as a driving gas outlet 12; when K2 and K3 are opened, K1 and K4 are closed, a K3 end is provided with a driving gas inlet 11, and a K2 end is provided with a driving gas outlet 12; the mechanical output end 13 is connected with a conversion mechanism 6, the conversion mechanism 6 is connected with a generator set 8, the generator set 8 and the conversion mechanism 6 are connected with a transmission 7, the setting of the transmission 7 ensures that the rotating speed of the generator set 8 is ensured, the generator set 8 is merged into a frequency converter 5 through a transmission circuit, an input power supply 9 is also connected into the frequency converter 5 and is electrically connected with a first-stage gas compressor 2 and a second-stage gas compressor 3 through the frequency converter 5 to provide electric energy for the compressors, gas is compressed by the second-stage gas compressor 3 and then enters a gas storage tank 4, and an output passage of the gas storage tank 4 is connected with a control valve.

Two communicating branches are connected in parallel at the end of the driving gas inlet 11, and control valves K1 and K2 are respectively arranged on the two communicating branches; two communicating branches are connected in parallel at the end of the driving gas exhaust port 12, and control valves K3 and K4 are respectively arranged on the two communicating branches; the cylinder 1 is connected with piston position sensors W1 and W2, respectively, and the open/close states of the control valves are automatically controlled by the feedback of the piston position sensors W1 and W2. The input pipeline and the output pipeline are respectively connected with gas pressure sensors C1 and C2, and the working state of each control compressor is fed back by the pressure sensors C1 and C2.

In the above compressor system, in which the first stage gas compressor 2 is defined as an input gas source at the input end of the cylinder 1, the second stage gas compressor 3 is a compressor for supercharging of the driving gas of the cylinder 1; the working process is as follows: the volume flow gas from the first stage gas compressor 2 firstly enters the cylinder 1, the cylinder 1 is inflated, a pressure difference is formed to the atmospheric pressure during inflation, the pressure difference is utilized to drive the generator set 8 to generate electricity, the air inlet valve is closed after inflation is completed, the exhaust valve is opened at the same time, and the gas in the cylinder (cylinder driving gas) is pressurized to the target pressure by the second stage gas compressor 5 and then is output. The cylinder continuously generates electric energy in the moving process and feeds the electric energy back to the compressor, so that the electric network input power required by the compressor is reduced, the aims of saving energy and electricity are fulfilled, and the efficiency of a compressor system is improved;

initially, the system enters a standby state and a signal is manually (or automatically) initiated to the controller. Simultaneously starting the first-stage gas compressor 2, opening the control valves K1, K4 and the second-stage gas compressor 3 to start when the pressure of the sensor C1 rises to a set value, inputting a gas source into the first-stage gas compressor 2 to supply gas to the cylinder 11, entering the cylinder 1 through K1 to drive the piston to move, enabling the push rod (namely, the mechanical output end 13) to move downwards, driving the conversion mechanism 6 to move in the downward movement process of the push rod, converting other mechanical movements of the push rod into rotary movements through the conversion mechanism 6, and transmitting the rotary movements into the generator set 8 through the transmission 7 to drive the generator set 8 to generate electricity; when a piston position sensor W2 detects that a piston reaches a position, electric valves K1, K4 and a first-stage gas compressor 2 are closed, a control valve K2 is opened, when the pressure of a sensor C2 is reduced to reach a set value, a control valve K3 and the first-stage gas compressor 2 are opened, the first-stage gas compressor 2 inputs a gas source to supply gas to a cylinder 11 for work, the gas enters the cylinder 1 through K3 to drive the piston to move, a push rod (namely, a mechanical output end 13) moves upwards, a conversion mechanism 6 is driven to move in the upward movement process of the push rod, other mechanical movements of the push rod are converted into rotary movements through the conversion mechanism 6, and the rotary movements are transmitted to a generator set 8 through a speed changer 7 to drive the generator set 8 to generate electricity, so that the conversion mechanism 6 continuously rotates and outputs kinetic energy in the movement process of the cylinder 1; when the piston sensor W1 detects the position of the piston, the K2, the K3 and the first stage gas compressor 2 are closed, and the K4 is opened at the same time, and when the pressure of the sensor C2 is reduced to a set value, the control valve K1 and the first stage gas compressor 2 are opened. The device is repeatedly cycled until the device needs to stop working.

As shown in fig. 3, the fifth embodiment of the present invention is: two energy-saving power generation units are arranged in series, wherein gas pressurized by the first energy-saving unit is used as gas source gas of the second unit, and the realization of high target gas pressure is ensured and the applicability of the invention is improved through the series connection of a plurality of energy-saving units.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.