阅读说明：本技术 一种用于燃气设备的进气压力、流量自动调节系统 (Automatic air inlet pressure and flow adjusting system for gas equipment ) 是由 李昕 宋启迅 刘慧军 薛开喜 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种用于燃气设备的进气压力、流量自动调节系统,包括进气管道、第一压力变送器、增压风机、出气管道、第二压力变送器、PLC控制器、变频器和触摸屏,它们之间的连接关系如下：进气管道一端连接外部燃气、另一端连接增压风机进气口,第一压力变送器设置在进气管道上,出气管道一端连接增压风机出气口、另一端与燃气设备连接,第一压力变送器、第二压力变送器均与PLC控制器电信号连接,PLC控制器与变频器电信号连接,变频器与增压风机电性连接,PLC控制器与触摸屏电信号连接。本发明能够实现无人值守,安全稳定的调节进气压力、流量,降低增压风机能耗,提高沼气利用生产效率,且通过在触摸屏8中设定不同的目标值,来适应不同工况。(The invention discloses an automatic regulating system for inlet pressure and flow of gas equipment, which comprises an inlet pipeline, a first pressure transmitter, a booster fan, an outlet pipeline, a second pressure transmitter, a PLC (programmable logic controller), a frequency converter and a touch screen, wherein the inlet pipeline, the first pressure transmitter, the booster fan, the outlet pipeline, the second pressure transmitter, the PLC, the frequency converter and the touch screen are connected in the following relation: outside gas is connected to admission line one end, the booster fan air inlet is connected to the other end, first pressure transmitter sets up on the admission line, the booster fan gas outlet is connected to the pipeline one end of giving vent to anger, the other end is connected with gas equipment, first pressure transmitter, second pressure transmitter all with PLC controller electric signal connection, PLC controller and converter electric signal connection, converter and booster fan electric connection, PLC controller and touch-sensitive screen electric signal connection. The invention can realize unattended operation, safely and stably adjust the air inlet pressure and flow, reduce the energy consumption of the booster fan, improve the utilization and production efficiency of the methane, and adapt to different working conditions by setting different target values in the touch screen 8.)

1. The utility model provides an intake pressure, flow automatic regulating system for gas equipment which characterized in that: including admission line (1), first pressure transmitter (2), booster fan (3), pipeline (4), second pressure transmitter (5), PLC controller (6), converter (7) and touch-sensitive screen (8) of giving vent to anger, the relation of connection between them is as follows: outside gas is connected to admission line (1) one end, booster fan (3) air inlet is connected to the other end, first pressure transmitter (2) set up on admission line (1), pipeline (4) one end of giving vent to anger is connected booster fan (3) gas outlet, the other end is connected with gas equipment, first pressure transmitter (2), second pressure transmitter (5) all with PLC controller (6) signal connection, PLC controller (6) and converter (7) signal connection, converter (7) and booster fan (3) electric connection, PLC controller (6) and touch-sensitive screen (8) signal connection.

2. The automatic intake pressure and flow regulating system for gas-fired equipment according to claim 1, characterized in that: the PLC controller (6) is composed of a CPU, a digital signal input and output module and an analog signal input and output module.

3. The automatic intake pressure and flow regulating system for gas-fired equipment according to claim 1, characterized in that: the booster fan (3) can be a Roots fan, a centrifugal fan, a multi-stage fan and the like, and is provided with a variable frequency motor.

4. The automatic intake pressure and flow regulating system for gas-fired equipment according to claim 1, characterized in that: and control valves (9) are arranged on the air inlet pipeline (1) and the air outlet pipeline (4).

5. The automatic intake pressure and flow regulating system for gas-fired equipment according to claim 1, characterized in that: the air inlet pipeline (1) is communicated with the air outlet pipeline (4) through a bypass pipeline (10), and a bypass valve (11) is arranged on the bypass pipeline (10).

6. The automatic intake pressure and flow regulating system for gas-fired equipment according to claim 1, characterized in that: the gas equipment can be a gas engine set, a gas boiler and a torch.

Technical Field

The invention relates to a regulating system, in particular to an automatic regulating system for air inlet pressure and flow of gas equipment.

Background

The pressure of gas sources of methane, coal gas, coking gas and the like is low, and the gas sources are used for pressurizing equipment such as a gas generator set, a gas boiler, a torch and the like by being provided with a booster fan. When the load of the gas equipment is increased, the gas consumption is correspondingly increased, and the rotating speed of the booster fan needs to be adjusted to maintain the inlet pressure and flow of the unit, the boiler and the torch. In the past, a manual regulation mode is adopted, the regulation speed is delayed, the operation needs to be attended, and the operation risk of overpressure or negative pressure exists. The patent designs an automatic regulating method, can realize unmanned on duty, and the regulation air intake flow and the pressure of safety and stability reduce booster fan energy consumption, improve the gas utilization production efficiency.

Disclosure of Invention

The invention aims to provide an automatic air inlet pressure and flow adjusting system for gas equipment, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an inlet pressure, flow automatic regulating system for gas equipment, includes admission line, first pressure transmitter, booster fan, pipeline, the second pressure transmitter of giving vent to anger, PLC controller, converter and touch-sensitive screen, the relation of connection between them as follows: outside gas is connected to admission line one end, the booster fan air inlet is connected to the other end, first pressure transmitter sets up on the admission line, the booster fan gas outlet is connected to the pipeline one end of giving vent to anger, the other end is connected with gas equipment, first pressure transmitter, second pressure transmitter all with PLC controller electric signal connection, PLC controller and converter electric signal connection, converter and booster fan electric connection, PLC controller and touch-sensitive screen electric signal connection.

The automatic air inlet pressure and flow regulating system for the gas equipment is characterized in that the PLC consists of a CPU, a digital signal input and output module and an analog signal input and output module.

The automatic inlet pressure and flow regulating system for the gas equipment can select a Roots blower, a centrifugal blower, a multistage blower and the like, and needs to be provided with a variable frequency motor.

According to the automatic air inlet pressure and flow adjusting system for the gas equipment, the air inlet pipeline and the air outlet pipeline are respectively provided with the control valve.

According to the automatic air inlet pressure and flow adjusting system for the gas equipment, the air inlet pipeline and the air outlet pipeline are communicated through the bypass pipeline, and the bypass pipeline is provided with the bypass valve.

The automatic regulating system for the inlet pressure and the flow of the gas equipment is used for regulating the inlet pressure and the flow of the gas equipment, and the gas equipment can be a gas engine set, a gas boiler and a torch.

The invention has the advantages that: the invention can realize unattended operation, safely and stably adjust the air inlet pressure and flow, reduce the energy consumption of the booster fan, improve the utilization and production efficiency of the methane, and adapt to different working conditions by setting different target values in the touch screen 8.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a structural connection diagram of the present invention; fig. 2 is a working principle diagram of the present invention.

Reference numerals: 1. an air intake duct; 2. a first pressure transmitter; 3. a booster fan; 4. an air outlet pipe; 5. a second pressure transmitter; 6. a PLC controller; 7. a frequency converter; 8. a touch screen; 9. a control valve; 10. a bypass conduit; 11. a bypass valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, an automatic intake pressure and flow regulating system for a gas appliance includes an intake pipe 1, a first pressure transmitter 2, a booster fan 3, an outlet pipe 4, a second pressure transmitter 5, a PLC controller 6, a frequency converter 7 and a touch screen 8, and the connection relationship between them is as follows: outside gas is connected to admission line 1 one end, 3 air inlets of booster fan are connected to the other end, first pressure transmitter 2 sets up on admission line 1, 3 gas outlets of booster fan are connected to 4 one ends of the pipeline of giving vent to anger, the other end is connected with gas equipment, first pressure transmitter 2, second pressure transmitter 5 all with 6 signal connection of telecommunication of PLC controller, 6 signal connection of PLC controller and 7 signal connection of converter, 7 and 3 electric connection of booster fan of converter, 6 and 8 signal connection of touch-sensitive screen of PLC controller. When the gas supply device is used, an operator sets a target value (gas equipment air inlet pressure) in the touch screen 8, and carries out comparison operation with an actual value (gas equipment air inlet pressure measured by the second pressure transmitter 5) through the PLC 6, when the actual air inlet pressure of the gas equipment is overlarge, the PLC 6 controls and reduces the rotating speed of the booster fan 3 through the frequency converter 7, and when the actual air inlet pressure of the gas equipment is overlarge, the PLC 6 controls and improves the rotating speed of the booster fan 3 through the frequency converter 7, so that the air supply pressure is stabilized in a proper range; the invention can realize unattended operation, safely and stably adjust the air inlet pressure and flow, reduce the energy consumption of the booster fan, improve the utilization and production efficiency of the methane, and adapt to different working conditions by setting different target values in the touch screen 8.

Specifically, the PLC controller 6 described in this embodiment is composed of a CPU, a digital signal input/output module, and an analog signal input/output module.

Specifically, the booster fan 3 described in this embodiment may be a roots fan, a centrifugal fan, a multistage fan, or the like, and needs to be equipped with a variable frequency motor.

Further, the inlet pipe 1 and the outlet pipe 4 of this embodiment are both provided with a control valve 9.

Furthermore, the inlet pipe 1 and the outlet pipe 4 described in this embodiment are communicated through a bypass pipe 10, and a bypass valve 11 is disposed on the bypass pipe 10.

Furthermore, the gas-fired device according to the present embodiment may be a gas engine set, a gas boiler, or a torch.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.