Nitrogen dual-pressure coupling automatic variable working condition device

Abstract

The utility model provides a nitrogen dual-pressure coupling automatic variable working condition device which comprises a nitrogen pressure unit. The pressure transmitter can obtain the tail end pressure of the nitrogen pressure unit; the pressure transmitter is used for acquiring the tail end pressure of the nitrogen pressure unit, the control mechanism is connected with the nitrogen pressure unit and the pressure transmitter, and the control mechanism can control the working state of the nitrogen pressure unit according to the tail end pressure acquired by the pressure transmitter. Therefore, automatic starting, automatic stopping, loading and unloading of the nitrogen pressure unit are achieved. And meanwhile, the tail end nitrogen pressure of the nitrogen pressure unit can be more stable.

Description

Technical Field

[0001] The utility model relates to the field of steelmaking equipment control, in particular to a nitrogen dual-pressure coupled automatic working condition changing device. Background Art

[0002] In many industrial production processes, such as chemical, steel, electronics, etc., high-purity nitrogen is required as a protective gas, reaction gas or cooling gas. In these applications, the pressure and purity of nitrogen must be precisely controlled to ensure product quality and production safety. Medium and low pressure nitrogen compressors, as the core equipment for nitrogen compression, are operated in coordination with medium and low pressure nitrogen compressors. However, the current nitrogen compressors are all in manual start and stop mode, and the pressure is set manually, resulting in untimely control of the nitrogen compressor during operation. Secondly, the control end is not linked to the terminal pressure during operation, resulting in insufficient and inaccurate control of the nitrogen compressor by the control end. Utility Model Content

[0003] The utility model aims to provide a nitrogen dual-pressure coupled automatic operating condition changing device to realize automatic starting, automatic stopping, loading and unloading of a nitrogen compressor unit.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nitrogen dual-pressure coupled automatic operating condition changing device, comprising: a nitrogen compressor; a pressure transmitter, the pressure transmitter can obtain the terminal pressure of the nitrogen compressor; a control mechanism, the control mechanism is connected to the nitrogen compressor and the pressure transmitter, and the control mechanism can control the working state of the nitrogen compressor according to the terminal pressure obtained by the pressure transmitter.

[0005] Furthermore, the nitrogen compressor unit includes a first nitrogen compressor and a second nitrogen compressor, and the working pressure of the first nitrogen compressor is higher than the working pressure of the second nitrogen compressor.

[0006] Furthermore, it also includes a remote terminal unit, the pressure transmitter is connected to the remote terminal unit, and the pressure transmitter can store the acquired terminal pressure data in the remote terminal unit.

[0007] Furthermore, the control mechanism includes a PLC controller, which is connected to the remote terminal unit and the nitrogen compressor unit, and the PLC controller can control the nitrogen compressor unit according to the terminal pressure data in the remote terminal unit.

[0008] Furthermore, the number of the nitrogen compressor units and the number of the PLC controllers are both 2, and each of the PLC controllers is connected to one of the nitrogen compressor units.

[0009] Furthermore, it also includes a main controller, which is connected to the PLC controller and can control the PLC controller.

[0010] Furthermore, it also includes a switch, the switch has an input end and two output ends, the input end is connected to the main controller, and the two output ends are respectively connected to the two PLC controllers.

[0011] Analysis shows that the utility model discloses a nitrogen dual-pressure coupled automatic operating condition changing device, which can control the nitrogen compressor unit according to the operating state of the nitrogen compressor unit, thereby realizing automatic start, automatic stop, loading and unloading of the nitrogen compressor unit; at the same time, it can also make the terminal nitrogen pressure of the nitrogen compressor unit more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0013] Figure 1 A schematic structural diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0015] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0016] One or more examples of the utility model are shown in the attached drawings. The detailed description uses numbers and letters to refer to the features in the drawings. Similar or similar marks in the drawings and descriptions have been used to refer to similar or similar parts of the utility model. As used herein, the terms "first", "second", "third", and "fourth" are used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of individual components.

[0017] like Figure 1 As shown, according to an embodiment of the utility model, a nitrogen dual-pressure coupled automatic operating condition changing device is provided, comprising: a nitrogen compressor group; a pressure transmitter, wherein the pressure transmitter can obtain the terminal pressure of the nitrogen compressor group; a control mechanism, wherein the control mechanism is connected to the nitrogen compressor group and the pressure transmitter, and the control mechanism can control the working state of the nitrogen compressor group according to the terminal pressure obtained by the pressure transmitter.

[0018] Specifically, the operating status of the nitrogen compressor unit is judged by collecting the terminal pressure of the nitrogen compressor unit. The control mechanism can control the nitrogen compressor unit according to the operating status of the nitrogen compressor unit, thereby realizing automatic start, automatic stop, loading and unloading of the nitrogen compressor unit; at the same time, the terminal nitrogen pressure of the nitrogen compressor unit can also be made more stable.

[0019] The nitrogen compressor unit comprises a first nitrogen compressor and a second nitrogen compressor, and the working pressure of the first nitrogen compressor is higher than the working pressure of the second nitrogen compressor.

[0020] The model of the first nitrogen compressor may be an Ingersoll Rand ASCK-S2011 centrifugal nitrogen compressor or a Sullair TRX-1850 centrifugal nitrogen compressor, and the model of the second nitrogen compressor may be an Ingersoll Rand NX12000 centrifugal nitrogen compressor or an Ingersoll Rand 3CI-C70MX5N2 centrifugal nitrogen compressor.

[0021] In actual use, the bus currents of the first nitrogen compressor and the second nitrogen compressor can participate in the optimization control.

[0022] It also includes a remote terminal unit, the pressure transmitter is connected to the remote terminal unit, and the pressure transmitter can store the acquired terminal pressure data in the remote terminal unit. The control mechanism includes a PLC controller, the PLC controller is connected to the remote terminal unit and the nitrogen compressor, and the PLC controller can control the nitrogen compressor according to the terminal pressure data in the remote terminal unit. The number of the nitrogen compressor and the PLC controller is 2, and each PLC controller is connected to one nitrogen compressor.

[0023] Two PLC controllers are arranged according to geographical locations and interconnected using a regional network.

[0024] It also includes a main controller, which is connected to the PLC controller and can control the PLC controller. It also includes a switch, which has an input end and two output ends, the input end is connected to the main controller, and the two output ends are respectively connected to the two PLC controllers.

[0025] The main controller enables the staff to control the PLC controller remotely, thereby realizing manual intervention in the working status of the nitrogen compressor unit.

[0026] Compared with the prior art, the utility model can control the nitrogen compressor according to the operating state of the nitrogen compressor, thereby realizing automatic start, automatic stop, loading and unloading of the nitrogen compressor; at the same time, it can also make the terminal nitrogen pressure of the nitrogen compressor more stable.

[0027] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nitrogen dual-pressure coupled automatic operating condition changing device, characterized in that: include: Nitrogen compressor unit; A pressure transmitter, wherein the pressure transmitter is capable of obtaining the terminal pressure of the nitrogen compressor unit; A control mechanism, wherein the control mechanism is connected to the nitrogen compressor unit and the pressure transmitter, and the control mechanism can control the working state of the nitrogen compressor unit according to the terminal pressure obtained by the pressure transmitter.

2. A nitrogen dual-pressure coupled automatic operating condition changing device according to claim 1, characterized in that: The nitrogen compressor unit comprises a first nitrogen compressor and a second nitrogen compressor, and the working pressure of the first nitrogen compressor is higher than the working pressure of the second nitrogen compressor.

3. A nitrogen dual-pressure coupled automatic operating condition changing device according to claim 1, characterized in that: A remote terminal unit is also included. The pressure transmitter is connected to the remote terminal unit. The pressure transmitter can store the acquired terminal pressure data in the remote terminal unit.

4. A nitrogen dual-pressure coupled automatic operating condition changing device according to claim 3, characterized in that: The control mechanism includes a PLC controller, which is connected to the remote terminal unit and the nitrogen compressor group. The PLC controller can control the nitrogen compressor group according to the terminal pressure data in the remote terminal unit.

5. A nitrogen dual-pressure coupled automatic operating condition changing device according to claim 4, characterized in that: The number of the nitrogen compressor units and the number of the PLC controllers are both 2, and each of the PLC controllers is connected to one nitrogen compressor unit.

6. A nitrogen dual-pressure coupled automatic operating condition changing device according to claim 5, characterized in that: It also includes a main controller, which is connected to the PLC controller and can control the PLC controller.

7. A nitrogen dual-pressure coupled automatic operating condition changing device according to claim 6, characterized in that: It also includes a switch, which has an input end and two output ends. The input end is connected to the main controller, and the two output ends are respectively connected to the two PLC controllers.

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