CN220770821U - Air supply system - Google Patents

Abstract

The utility model provides an air supply system. The storage tank is communicated with the outside through an output pipeline. The pressure sensor is located outside the storage tank and is communicated with the interior of the storage tank and is used for detecting a first pressure signal in the storage tank in real time. The gas phase pipeline is communicated with the gas phase space of the storage tank and is communicated with the output pipeline. The liquid phase pipeline is communicated with the liquid phase space of the storage tank and is communicated with the output pipeline. The inlet of the gasifier is communicated with the liquid phase pipeline, and the outlet is communicated with the output pipeline and the gas phase pipeline. The pressure regulator is provided on the output line. The gas phase control valve is arranged on the gas phase pipeline. The liquid phase control valve is arranged on the liquid phase pipeline. The controller is electrically connected with the pressure sensor for receiving a first pressure signal, is electrically connected with the gasifier for controlling the gasifier to work, is electrically connected with the gas phase control valve for controlling the gas phase control valve to open and close, is electrically connected with the liquid phase control valve for controlling the liquid phase control valve to open and close, and is electrically connected with the pressure regulator for controlling the pressure regulator to work.

Description

Air supply system

Technical Field

The utility model relates to the technical field of liquefied gas supply, in particular to a gas supply system.

Background

In the supply of liquefied gas, the liquefied gas product is often stored in a storage tank, gasified and regulated, and then input into a civil pipe network for users to use.

However, as the temperature changes, the liquefied gas product exists in the storage tank in a liquid state, a gaseous state or a gas-liquid mixed state, and at this time, the liquefied gas product in a liquid state is still forcedly gasified into a gaseous state by the gasification device, so that resource waste is caused. Moreover, the storage tank and the gasification device are often installed in remote positions or unattended places, and the operation is inconvenient.

Disclosure of Invention

The utility model aims to provide an air supply system capable of realizing air supply by automatic operation.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to one aspect of the present application, there is provided a gas supply system comprising:

the storage tank is communicated with the outside through an output pipeline;

a pressure sensor located outside the storage tank and in communication with the interior of the storage tank for detecting a first pressure signal in real time within the storage tank;

a gas phase pipeline which is communicated with the gas phase space of the storage tank and is communicated with the output pipeline;

a liquid phase pipeline which is communicated with the liquid phase space of the storage tank and is communicated with the output pipeline;

the inlet of the gasifier is communicated with the liquid phase pipeline, and the outlet of the gasifier is communicated with the output pipeline and the gas phase pipeline;

a pressure regulator provided on the output line;

a gas phase control valve provided on the gas phase line;

a liquid-phase control valve provided on the liquid-phase line;

the controller is electrically connected with the pressure sensor and used for receiving the first pressure signal, the controller is electrically connected with the gasifier and used for controlling the gasifier to work, the controller is electrically connected with the gas phase control valve and used for controlling the gas phase control valve to open and close, the controller is electrically connected with the liquid phase control valve and used for controlling the liquid phase control valve to open and close, and the controller is electrically connected with the pressure regulator and used for controlling the pressure regulator to work.

In some embodiments, the air supply system comprises:

at least two gasifiers which are arranged in parallel on the liquid-phase pipeline;

at least two pressure regulators are arranged in parallel on the output pipeline.

In some embodiments, the gas supply system comprises two gasifiers and two pressure regulators, wherein one gasifiers is in a working state, and the other gasifiers are in a closed standby state;

one of the pressure regulators is in a working state, and the other pressure regulator is in a closed standby state.

In some embodiments, each vaporizer is connected with the liquid phase pipeline through a connecting pipeline, and each connecting pipeline is provided with a stop valve for controlling the on-off of the connecting pipeline;

each stop valve is electrically connected with the controller respectively.

In some embodiments, the controller comprises a control unit, a control element and a display unit, wherein the control unit is electrically connected with the control element and the display unit at the same time, and the control unit is electrically connected with the pressure sensor, the gas phase control valve and the liquid phase control valve;

the control element is electrically connected with the gasifier and the pressure regulator;

the display unit is used for displaying the first pressure signal.

In some embodiments, the controller further comprises an alarm unit electrically connected to the control unit.

In some embodiments, the air supply system further comprises a remote monitoring platform communicatively connected to the controller via a communication module.

In some embodiments, the gas supply system further comprises a pressure transmitter disposed on the output line downstream of the pressure regulator for detecting a second pressure signal through the output line;

the pressure transmitter is electrically connected with the controller.

In some embodiments, the gas supply system further comprises a temperature transmitter disposed on the output line downstream of the pressure regulator for detecting a temperature signal through the output line;

the temperature transmitter is electrically connected with the controller.

In some embodiments, a liquid level sensor is arranged on the storage tank and is used for detecting a real-time liquid level signal in the storage tank; the liquid level sensor is electrically connected with the controller;

the gas supply system further comprises at least two combustible detectors, wherein at least one combustible detector is arranged on the periphery of the storage tank and is used for detecting a gas concentration signal on the periphery of the storage tank; at least one combustible detector is arranged at the periphery of the output pipeline and is used for detecting a gas concentration signal at the periphery of the output pipeline;

each combustible detector is electrically connected with the controller.

According to the technical scheme, the utility model has at least the following advantages and positive effects:

in the utility model, the gas supply system comprises a storage tank, a pressure sensor, a gas phase pipeline, a liquid phase pipeline, a gasifier, a pressure regulator, a gas phase control valve, a liquid phase control valve and a controller. The storage tank is communicated with the outside through an output pipeline. The pressure sensor is located outside the storage tank and is communicated with the interior of the storage tank and is used for detecting a first pressure signal in the storage tank in real time. The gas phase pipeline is communicated with the gas phase space of the storage tank and is communicated with the output pipeline. The liquid phase pipeline is communicated with the liquid phase space of the storage tank and is communicated with the output pipeline. The inlet of the gasifier is communicated with the liquid phase pipeline, and the outlet is communicated with the output pipeline and the gas phase pipeline. The pressure regulator is provided on the output line. The gas phase control valve is arranged on the gas phase pipeline. The liquid phase control valve is arranged on the liquid phase pipeline. The controller is electrically connected with the pressure sensor for receiving a first pressure signal, is electrically connected with the gasifier for controlling the gasifier to work, is electrically connected with the gas phase control valve for controlling the gas phase control valve to open and close, is electrically connected with the liquid phase control valve for controlling the liquid phase control valve to open and close, and is electrically connected with the pressure regulator for controlling the pressure regulator to work.

Among the above-mentioned air feed system, the controller can be according to one of them opening of first pressure signal control gas phase control valve and liquid phase control valve, perhaps control gas phase control valve and liquid phase control valve simultaneously to control pressure regulator starts, simultaneously adaptively control the gasifier starts, can carry out the work of different modes according to the specific circumstances promptly, in order to realize air feed system's automation work, in order to supply air automatically, use manpower sparingly cost.

Drawings

Fig. 1 is a schematic diagram of the structure of the air supply system in this embodiment.

Fig. 2 is one of control flowcharts of the air supply system in the present embodiment.

Fig. 3 is another control flow chart of the air supply system in the present embodiment.

Fig. 4 is a flowchart of the operation of the air supply system in this embodiment.

The reference numerals are explained as follows:

1. a storage tank;

21. a pressure sensor; 22. a pressure transmitter; 23. a temperature transmitter; 24. a liquid level sensor; 25. a combustible detector;

31. a gas phase pipeline; 32. a liquid phase pipeline; 33. an output line;

4. a gasifier; 41. a first vaporizer; 42. a second gasifier;

5. a pressure regulator; 51. a first pressure regulator; 52. a second pressure regulator;

61. a gas phase control valve; 62. a liquid phase control valve; 63. a first stop valve; 64. a second shut-off valve;

7. a controller; 71. a control unit; 72. a control element; 73. a display unit; 74. an alarm unit;

8. a remote monitoring platform;

9. and a communication module.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present application, it should be understood that in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, rear, etc.) are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Specific embodiments of the air supply system of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of the air supply system in this embodiment.

Referring to fig. 1, the present embodiment provides an air supply system including a tank 1, a pressure sensor 21, a gas phase line 31, a liquid phase line 32, a vaporizer 4, a pressure regulator 5, a gas phase control valve 61, a liquid phase control valve 62, and a controller 7.

The tank 1 in this embodiment is in particular a cryogenic liquid tank 1.

The storage tank 1 is hollow to form a receiving space for receiving the liquefied gas product. Wherein the liquefied gas product can be present in the tank 1 in a liquid, gaseous or gas-liquid mixed state.

The accommodating space can be vertically divided into a gas-phase space and a liquid-phase space, wherein the gas-phase space refers to a part of the accommodating space occupied by the liquefied gas product in a gaseous form, namely the volume of the liquefied gas product in the gaseous form. The liquid space refers to a portion of the liquefied gas product occupying the accommodating space in a liquid state, i.e., a volume of the liquefied gas product in a liquid state.

In this embodiment, the tank 1 is a vertical tank, i.e. its axis extends vertically.

The storage tank 1 is provided with a liquid outlet and an inlet and an outlet. Specifically, the liquid outlet is communicated with the liquid phase space, and the inlet and the outlet are communicated with the gas phase space. The liquid outlet is positioned below the inlet and the outlet.

In the present embodiment, the tank 1 communicates with the outside through an output pipe 33. The outside is referred to herein as a customer network, that is, the output line 33 communicates with the customer network.

The gas phase pipeline 31 is communicated with the gas phase space of the storage tank 1 and is communicated with the output pipeline 33 so as to realize the communication between the storage tank 1 and the outside. Specifically, the gas phase line 31 is connected to the inlet and outlet for the flow of the liquefied gas product in the gaseous state in the tank 1.

Further, a gas phase control valve 61 is provided on the gas phase pipeline 31 for controlling the on-off of the gas phase pipeline 31. In the present embodiment, the gas phase control valve 61 may be controlled by electric control or manual control.

The liquid phase pipeline 32 is communicated with the liquid phase space of the storage tank 1 and is communicated with the output pipeline 33 so as to realize the communication between the storage tank 1 and the outside. Specifically, the liquid phase pipeline 32 is connected to the liquid outlet, so that the liquefied gas product in the liquid state in the storage tank 1 flows.

Further, a liquid control valve 62 is disposed on the liquid pipeline 32 for controlling on-off of the liquid pipeline 32. In this embodiment, the liquid phase control valve 62 may be controlled electronically or manually.

The pressure sensor 21 is arranged outside the storage tank 1 and is communicated with the interior of the storage tank 1, and is used for detecting a first pressure signal P in real time in the storage tank 1.

The gasifier 4 is located outside the storage tank 1, and has an inlet connected to the liquid phase pipeline 32, an outlet connected to the output pipeline 33 and the gas phase pipeline 31, and is used for gasifying the liquefied gas product in a liquid state to form the liquefied gas product in a gas state, and then the liquefied gas product in a gas state can be conveyed to the outside through the output pipeline 33.

Wherein, the storage tank 1, the liquid phase pipeline 32 and the gasifier 4 are communicated with the gas phase pipeline 31 to form a loop, so that the liquefied gas product in liquid state can be gasified by the gasifier 4 to form the liquefied gas product in gas state, and then can flow back into the storage tank 1 through the gas phase pipeline 31 through the inlet and the outlet.

In the present embodiment, the connection point of the outlet of the vaporizer 4 and the output pipe 33 coincides with the connection point of the outlet of the vaporizer 4 and the gas phase pipe 31.

The number of the gasifiers 4 is at least two, the at least two gasifiers 4 are arranged on the liquid-phase pipeline 32 in parallel, wherein at least one gasifiers 4 is in a working state, and at least one gasifiers 4 is in a closed standby state, so that the at least two gasifiers 4 can be switched to be used, and when a part of the gasifiers 4 are damaged and cannot work normally, the other gasifiers 4 can be switched to work continuously, so that the normal operation of the whole air supply system is ensured.

In the present embodiment, the number of the gasifiers 4 is two, and the two gasifiers 4 are arranged in parallel on the liquid-phase pipeline 32 in a one-by-one manner. That is, one of the gasifiers 4 is in an operating state for gasifying liquefied gas products in a liquid state, and the other gasifiers 4 is in a shut-down standby state.

In other embodiments, the number of gasifiers 4 may be three, four, or a plurality of other numbers, as desired, without limitation.

In the present embodiment, each vaporizer 4 is connected to the liquid phase line 32 through a connecting line. Specifically, the two gasifiers 4 are a first gasifier 41 and a second gasifier 42, and the two pipelines are a first connecting pipeline and a second connecting pipeline, respectively. The first vaporizer 41 is connected to the liquid-phase line 32 via a first connection line, and the second vaporizer is connected to the liquid-phase line 32 via a second connection line.

At this time, the outlet of the first connecting pipe is simultaneously connected to the gas-phase pipe 31 and the output pipe 33, the outlet of the second connecting pipe is simultaneously connected to the gas-phase pipe 31 and the output pipe 33, the connection point of the outlet of the first connecting pipe and the output pipe 33 coincides with the connection point of the outlet of the second connecting pipe and the output pipe 33 to form a first connection point, the connection point of the outlet of the first connecting pipe and the gas-phase pipe 31 coincides with the connection point of the outlet of the second connecting pipe and the gas-phase pipe 31 to form a second connection point, and the first connection point coincides with the second connection point.

Specifically, the outlet of the first connecting line, the outlet of the second connecting line, the inlet of the output line 33, and the outlet of the gas phase line 31 are communicated by four-way connection.

Further, each pipeline is provided with a stop valve for controlling the on-off of the pipeline. Specifically, the first shut-off valve 63, which is opened and closed by the first connection pipe. The second connecting pipeline is provided with a second stop valve 64 for controlling the on-off of the second connecting pipeline.

In this embodiment, each shut-off valve may be controlled electronically or manually.

The pressure regulator 5 is disposed on the output pipeline 33, and is used for regulating the pressure of the gaseous liquefied gas product flowing into the output pipeline 33 from the gas-phase pipeline 31 and the liquid-phase pipeline 32, so that the pressure of the gaseous liquefied gas product can reach the delivery pressure, and the liquefied gas product can be ensured to be delivered to a user for a long distance through a user pipe network for use by the user.

In this embodiment, the pressure regulator 5 is a gas pressure regulating valve, and the pressure regulator 5 controls the flow of the gaseous liquefied product passing through the inside of the pressure regulator in unit time by mainly regulating the opening, so as to realize pressure regulation in the output pipeline 33, so as to ensure that the gaseous liquefied product can be normally conveyed to the user pipe network through the output pipeline 33, and ensure normal supply to the user.

The number of the pressure regulators 5 is at least two, and the at least two pressure regulators 5 are arranged on the output pipeline 33 in parallel, wherein at least one pressure regulator 5 is in a working state, and at least one pressure regulator 5 is in a closed standby state. This arrangement enables the use of at least two pressure regulators 5 switched to each other to prevent the pressure regulator 5 from changing its own structure under continuous operation for a long time, resulting in a decrease in the accuracy of the pressure regulator 5; and, this setting can guarantee when wherein some pressure regulator 5 is impaired unable normal work, can switch to other pressure regulators 5 and continue to work to guarantee the normal operating of whole air feed system.

In the present exemplary embodiment, the number of pressure regulators 5 is two, and the two pressure regulators 5 are connected in parallel to the output line 33 in a single-use manner. That is, one of the pressure regulators 5 is in an operating state, and the other pressure regulator 5 is in a closed standby state.

Fig. 2 is a control flow chart of one of the air supply systems in the present embodiment.

Referring to fig. 2, a controller 7 is electrically connected to the pressure sensor 21 for receiving the first pressure signal P, the controller 7 is electrically connected to the vaporizer 4 for controlling the operation of the vaporizer 4, the controller 7 is electrically connected to the gas phase control valve 61 for controlling the opening and closing of the gas phase control valve 61, the controller 7 is electrically connected to the liquid phase control valve 62 for controlling the opening and closing of the phase control valve, and the controller 7 is electrically connected to the pressure regulator 5 for controlling the operation of the pressure regulator 5. In this embodiment, the controller 7 controls one of the gas phase control valve 61 and the liquid phase control valve 62 to be opened according to the real-time first pressure signal P, or simultaneously controls the gas phase control valve 61 and the liquid phase control valve 62 to be started and controls the pressure regulator 5 to be started, and simultaneously adaptively controls the gasifier 4 to be started, i.e. the operation in different modes can be performed according to specific conditions, so as to realize the automatic operation of the gas supply system, automatically supply gas, and save labor cost.

Fig. 3 is another control flow chart of the air supply system in the present embodiment.

Referring to fig. 3, when the number of the gasifiers 4 is at least two and the number of the pressure regulators 5 is at least two, the controller 7 is electrically connected to each of the gasifiers 4, each of the pressure regulators 5, respectively, to be able to control the on/off of at least one of the gasifiers 4, at least one of the pressure regulators 5, respectively or simultaneously, and the controller 7 is able to control the opening degree of the pressure regulator 5 to adjust the amount of liquefied product in a gaseous state flowing into the output line 33 through the inside thereof per unit time, thereby achieving the pressure adjustment in the output line 33.

Specifically, in the present embodiment, the number of the gasifiers 4 and the number of the pressure regulators 5 are two, at this time, when the operation duration of the first gasifier 41 has reached the preset value T1, the controller 7 controls the first gasifier 41 to be turned off and controls the second gasifier 42 to be turned on, and then when the operation duration of the second gasifier 42 has reached the preset value T2, the controller 7 controls the second gasifier 42 to be turned off and controls the first gasifier 41 to be turned on, so as to switch cyclically. Meanwhile, the two pressure regulators 5 are respectively a first pressure regulator 51 and a second pressure regulator 52, when the operation duration of the first pressure regulator 51 reaches a preset value T3, the controller 7 controls the first pressure regulator 51 to be closed and controls the second pressure regulator 52 to be started, and the controller 7 can control the opening of the second pressure regulator 52 to regulate the amount of liquefied product in a gaseous state flowing through the inside of the first pressure regulator 51 in unit time; then, when the operation time period of the second pressure regulator 52 has reached the preset value T4, the controller 7 controls the second pressure regulator 52 to be turned off and controls the first pressure regulator 51 to be turned on, and the controller 7 can control the opening degree of the first pressure regulator 51 to adjust the amount of liquefied product in a gaseous state flowing through the inside thereof per unit time, thereby cyclically switching.

In the present embodiment, the controller 7 is electrically connected to the first shut-off valve 63, and the controller 7 is electrically connected to the second shut-off valve 64. The controller 7 can control the first vaporizer 41 to be closed and control the first shutoff valve 63 to be closed and control the second vaporizer 42 and the second shutoff valve 64 to be opened.

The controller 7 includes a control unit 71, a control element 72, and a display unit 73.

The control unit 71 is electrically connected to the control element 72 and the display unit 73, and the control unit 71 is electrically connected to the pressure sensor 21, the gas phase control valve 61 and the liquid phase control valve 62, and is configured to receive and analyze a first pressure signal P in real time from the pressure sensor 21, and control one of the gas phase control valve 61 and the liquid phase control valve 62 to be opened according to the received first pressure signal P, or control the gas phase control valve 61 to be opened simultaneously with the liquid phase control valve 62, and simultaneously send a control signal to the control element 72 according to the received first pressure signal P. Wherein whether the control signal is sent out depends on the operating time of the gasifier 4, the pressure regulator 5.

The control unit 71 is electrically connected to both the first shut-off valve 63 and the second shut-off valve 64, and is capable of controlling the actuation or closing of the first shut-off valve 63 and the closing or actuation of the second shut-off valve 64.

The control unit 72 is electrically connected to the carburetor 4 and the pressure regulator 5. In the present embodiment, the control unit 72 is electrically connected to both the two gasifiers 4 and the two pressure regulators 5, and controls the first gasifiers 41 to be turned on or off and controls the second gasifiers 42 to be turned off or on after receiving the control signal sent by the control unit 71; and is capable of controlling one of the pressure regulators 5 to be turned on and the other pressure regulator 5 to be turned off according to a control signal issued by the control unit 71; and the control unit 72 is able to control the opening degree of the pressure regulator 5 to regulate the amount of liquefied product in a gaseous state flowing into the output line 33 through the inside thereof per unit time.

In this embodiment, the control element 72 may be a relay, a contactor, or the like.

The display unit 73 is configured to display the first pressure signal P and is capable of displaying the duration that the gasifier 4 and the pressure regulator 5 are in operation.

In this embodiment, the controller 7 further comprises an alarm unit 74, the alarm unit 74 is electrically connected to the control unit 71, and the alarm unit 74 is communicatively connected to the remote monitoring platform 8. By setting the alarm parameters in the alarm unit 74 in advance, when the data information received by the control unit 71 is abnormal, an alarm signal is transmitted to the alarm unit 74, and the alarm unit 74 uploads the alarm signal to the remote monitoring platform 8.

Further, the air supply system further comprises a remote monitoring platform 8, the remote monitoring platform 8 is in communication connection with the controller 7 through a communication module 9, so that the controller 7 can upload data information such as the first pressure signal P to the remote monitoring platform 8, and an operator can detect the data such as the first pressure signal P inside the storage tank 1 in real time when the operator is far away from the remote controller 7. Specifically, the remote monitoring platform 8 is communicatively connected to the control unit 71, the control unit 71 being capable of uploading the first pressure signal P to the remote monitoring platform 8, and the control unit 71 being capable of uploading the alarm signal to the remote monitoring platform 8.

In this embodiment, the remote monitoring platform 8 may be a mobile terminal such as a mobile phone, a tablet, or a computer.

In this embodiment, the communication module 9 may be a 4G module, a 5G module, or the like.

Further, the gas supply system comprises a pressure transmitter 22, wherein the pressure transmitter 22 is arranged on the output pipeline 33 and is positioned downstream of the pressure regulator 5 for detecting a second pressure signal in the output pipeline 33, i.e. detecting a second pressure signal of the liquefied gas product in a gaseous state after being regulated by the pressure regulator 5.

The pressure transmitter 22 is electrically connected to the controller 7. Specifically, the pressure transmitter 22 is electrically connected to the control unit 71, and is capable of transmitting a real-time second pressure signal to the control unit 71, and after receiving and analyzing the second pressure signal, the control unit 71 controls the opening of the pressure regulator 5 in an operating state to adjust the amount of liquefied product in a gaseous state flowing into the output pipeline 33 through the inside thereof in unit time, so as to realize the adjustment of the pressure in the output pipeline 33, so as to ensure that the liquefied gas product in a gaseous state can be normally conveyed to a user pipe network through the output pipeline 33, and ensure the normal supply to the user.

Further, the gas supply system further comprises a temperature transmitter 23, wherein the temperature transmitter 23 is arranged on the output pipeline 33 and is positioned downstream of the pressure regulator 5, and is used for detecting a temperature signal in the output pipeline 33, namely, detecting a temperature signal of the liquefied gas product in a gaseous state after being regulated by the pressure regulator 5.

The temperature transmitter 23 is electrically connected to the controller 7. The temperature transmitter 23 is electrically connected to the control unit 71, and is capable of transmitting a real-time temperature signal to the control unit 71. Since the pressure of the gas increases with an increase in temperature in a unit volume, the pressure of the gas decreases with a decrease in temperature. At this time, after receiving and analyzing the temperature signal, the control unit 71 controls the opening of the pressure regulator 5 in an operating state to adjust the amount of the liquefied product in a gaseous state flowing into the output pipe 33 through the inside thereof in unit time, so as to realize the adjustment of the pressure in the output pipe 33, so as to ensure that the liquefied product in a gaseous state can be normally delivered to the customer network through the output pipe 33, so as to ensure the normal supply to the customer.

Further, the storage tank 1 is also provided with a liquid level sensor 24 for detecting a real-time liquid level signal in the storage tank 1.

The liquid level sensor 24 is electrically connected to the controller 7. Specifically, the liquid level sensor 24 is electrically connected to both the control unit 71 and the alarm unit 74, and the control unit 71 is capable of receiving the liquid level signal, transmitting the liquid level signal to the display unit 73, and uploading the liquid level signal to the remote monitoring platform 8. Meanwhile, when the liquid level signal is lower than the liquid level minimum value in the alarm parameters, the control unit 71 sends an alarm signal to the alarm unit 74, and controls the alarm unit 74 to upload the alarm signal to the remote monitoring platform 8.

The gas supply system further comprises at least two combustible detectors 25, wherein at least one combustible detector 25 is arranged at the periphery of the storage tank 1 and is used for detecting a gas concentration signal at the periphery of the storage tank 1. At least one combustible detector 25 is disposed at the periphery of the output pipe 33 for detecting a gas concentration signal at the periphery of the output pipe 33. In the present embodiment, the number of the flammable detectors 25 is two, and the flammable detectors 25 are respectively disposed on the outer periphery of the storage tank 1 and the outer periphery of the output pipe 33.

Each of the combustible detectors 25 is electrically connected to the controller 7. Specifically, the combustible detector 25 is electrically connected to both the control unit 71 and the alarm unit 74, and the control unit 71 is capable of receiving and analyzing the gas concentration signal in real time, transmitting the gas concentration signal to the display unit 73, and uploading the gas concentration signal to the remote monitoring platform 8. Meanwhile, when the gas concentration signal is analyzed to exceed the highest value of the gas concentration in the alarm parameters, the control unit 71 sends an alarm signal to the alarm unit 74, and controls the alarm unit 74 to upload the alarm signal to the remote monitoring platform 8.

Fig. 4 is a flowchart showing the operation of the air supply system in the present embodiment.

Referring to fig. 3 and 4, the air supply system operates as follows:

full-automatic air supply mode of air supply system:

first, the maximum value P1 and the minimum value P2 of the pressure in the tank 1 are set in the control unit 71 of the controller 7, and the operation time of the two gasifiers 4 is set as follows: t1 and T2, the running times of the two pressure regulators 5 are set to be respectively: t3 and T4, a preset value P3 of the pressure in the output line 33 is set. And sets alarm parameters in the alarm unit 74 of the controller 7, wherein the alarm parameters include a minimum value of the liquid level in the tank 1, a maximum value of the gas concentration at the outer periphery of the tank 1 and the outer periphery of the output pipe 33.

The real-time first pressure signal P in the tank 1 is detected by the pressure sensor 21 and transmitted to the control unit 71, and the control unit 71 analyzes the first pressure signal P, there are three scenarios:

first, when the control unit 71 analyzes that the first pressure signal P is greater than P1, the natural gasification mode is performed. That is, the control unit 71 controls the gas phase control valve 61 to be opened and controls the liquid phase control valve 62 to be closed, so that the liquefied gas product in the gaseous state in the tank 1 directly flows through the gas phase line 31. At the same time, the control unit 71 sends a control signal to the control unit 72, causing the control unit 72 to control the same pressure regulator 5 therein to be activated, while the other pressure regulator 5 is in a closed state. The second pressure signal in the output pipeline 33 is detected in real time by the pressure transmitter 22 and transmitted to the control unit 71, the temperature signal in the output pipeline 33 is detected in real time by the temperature transmitter 23 and transmitted to the control unit 71, the control unit 71 analyzes and compares the relationship between the second pressure signal and P3, and then the control unit 71 controls the control unit 72 to adjust the opening of the pressure regulator 5 in the working state according to the second pressure signal and the temperature signal, so as to adjust the amount of the liquefied product in the gaseous state flowing into the output pipeline 33 through the inside of the pressure regulator in unit time, thereby realizing the pressure regulation in the output pipeline 33.

Second, when the control unit 71 analyzes that P1 is greater than or equal to the first pressure signal P, and the first pressure signal P is greater than or equal to P2, the liquid phase gasification mode is performed. That is, the control unit 71 controls the liquid-phase control valve 62 to be opened, and the gas-phase control valve 61 is closed at this time, so that the liquefied gas product in the liquid state in the tank 1 flows through the liquid-phase line 32. The control unit 71 sends a control signal to the control element 72, so that the control element 72 controls one of the gasifiers 4 to start, and the other gasifiers 4 are in a closed state at this time, and gasify the liquefied gas product in liquid state flowing into the liquid phase pipeline 32 to form the liquefied gas product in gas state. At the same time, the control unit 72 controls the same pressure regulator 5 and the corresponding shut-off valve therein to be actuated, while the other pressure regulator 5 and the corresponding shut-off valve are in a closed state. The second pressure signal in the output pipeline 33 is detected in real time by the pressure transmitter 22 and transmitted to the control unit 71, the temperature signal in the output pipeline 33 is detected in real time by the temperature transmitter 23 and transmitted to the control unit 71, the control unit 71 analyzes and compares the relationship between the second pressure signal and P3, and then the control unit 71 controls the control unit 72 to adjust the opening of the pressure regulator 5 in the working state according to the second pressure signal and the temperature signal, so as to adjust the amount of the liquefied product in the gaseous state flowing into the output pipeline 33 through the inside of the pressure regulator in unit time, thereby realizing the pressure regulation in the output pipeline 33.

Third, when the control unit 71 analyzes that the first pressure signal P is smaller than P2, the self-boosting mode is performed. That is, the control unit 71 simultaneously controls the liquid-phase control valve 62 and the gas-phase control valve 61 to be opened, so that the liquefied gas product in the liquid state in the tank 1 flows through the liquid-phase line 32. The control unit 71 sends a control signal to the control element 72, so that the control element 72 controls one of the gasifiers 4 and the corresponding stop valve to be started, at this time, the other gasifiers 4 and the corresponding stop valve are in a closed state, and gasify the liquefied gas product in liquid state flowing into the liquid phase pipeline 32 to form the liquefied gas product in gas state, and then the liquefied gas product in gas state flows back into the storage tank 1 through the gas phase pipeline 31, so as to regulate the pressure in the storage tank 1. And after the first pressure signal P is greater than or equal to P2 and P1 is greater than or equal to the first pressure signal P, performing a liquid phase gasification mode with reference to the second case to supply gas; or when the first pressure signal P is greater than P1, the natural gasification mode is performed to supply air with reference to the first case described above.

In the process of supplying air by the air supply system, the controller 7 switches the operation according to the operation time period of each of the gasifiers 4 and each of the pressure regulators 5. That is, when the operation period of the first vaporizer 41 has reached the preset value T1, the controller 7 controls the first vaporizer 41 and the first shut-off valve 63 to be closed and controls the second vaporizer 42 and the second shut-off valve 64 to be activated, and then when the operation period of the second vaporizer 42 has reached the preset value T2, the controller 7 controls the second vaporizer 42 and the second shut-off valve 64 to be closed and controls the first vaporizer 41 and the first shut-off valve 63 to be activated, thereby cyclically switching. When the operation duration of the first pressure regulator 51 has reached the preset value T3, the controller 7 controls the first pressure regulator 51 to be closed and controls the second pressure regulator 52 to be activated, and the controller 7 can control the opening degree of the second pressure regulator 52 to adjust the amount of liquefied product in a gaseous state flowing through the inside thereof per unit time; then, when the operation time period of the second pressure regulator 52 has reached the preset value T4, the controller 7 controls the second pressure regulator 52 to be turned off and controls the first pressure regulator 51 to be turned on, and the controller 7 can control the opening degree of the first pressure regulator 51 to adjust the amount of liquefied product in a gaseous state flowing through the inside thereof per unit time, thereby cyclically switching.

Meanwhile, the gas supply system detects a real-time liquid level signal in the storage tank 1 through a liquid level transmitter and transmits the liquid level signal to the control unit 71, detects a real-time gas concentration signal at the periphery of the storage tank 1 through the combustible detector 25 and transmits the gas concentration signal to the control unit 71, and when the liquid level signal is lower than a liquid level minimum value in an alarm parameter and the gas concentration signal exceeds a gas concentration maximum value in the alarm parameter through analysis by the control unit 71, an alarm signal is sent to the alarm unit 74 and the alarm unit 74 is controlled to upload the alarm signal to the remote monitoring platform 8 so as to remind a worker of timely processing.

The control unit 71 can also display the received first pressure signal P, second pressure signal, liquid level signal, operation time of each gasifier 4, operation time of each pressure regulator 5, temperature signal, etc. on the display unit 73, and upload the signals to the remote monitoring platform 8 through the communication module 9, so as to facilitate real-time monitoring of staff.

Semi-automatic air supply mode of air supply system:

in this mode, the automatic air supply mode of the air supply system is referred to for air supply except that the liquid phase control valve 62, the gas phase control valve 61, the two stop valves, and the two gasifiers 4 are not controlled by the controller 7, that is, the liquid phase control valve 62, the gas phase control valve 61, the two stop valves, and the two gasifiers 4 need to be manually controlled.

According to the technical scheme, the utility model has at least the following advantages and positive effects:

one of the gas phase control valve and the liquid phase control valve is controlled to be opened according to the first pressure signal through the controller, or the gas phase control valve and the liquid phase control valve are controlled simultaneously, the pressure regulator is controlled to be started, and the gasifier is controlled to be started adaptively at the same time, namely, different modes of operation can be carried out according to specific conditions, so that automatic operation of the gas supply system is realized, gas is supplied automatically, and labor cost is saved.

Further, at least two gasifiers are arranged on the liquid-phase pipeline in parallel, wherein at least one gasifiers are in a working state, and at least one gasifiers are in a closed standby state, so that at least two gasifiers can be switched to be used, and when a part of the gasifiers are damaged and cannot work normally, the other gasifiers can be switched to continue to work, so that the normal operation of the whole air supply system is guaranteed.

At least two pressure regulators are arranged on the output pipeline in parallel, wherein at least one pressure regulator is in a working state and at least one pressure regulator is in a closed standby state. The arrangement enables at least two pressure regulators to be used in a switching manner, so that the pressure regulators are prevented from being reduced in accuracy due to the fact that the structures of the pressure regulators are changed under continuous operation for a long time; and when a part of the pressure regulators are damaged and cannot work normally, the pressure regulators can be switched to other pressure regulators to work continuously, so that the normal operation of the whole air supply system is ensured.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A gas supply system, comprising:

the storage tank is communicated with the outside through an output pipeline;

a pressure sensor located outside the storage tank and in communication with the interior of the storage tank for detecting a first pressure signal in real time within the storage tank;

a gas phase pipeline which is communicated with the gas phase space of the storage tank and is communicated with the output pipeline;

a liquid phase pipeline which is communicated with the liquid phase space of the storage tank and is communicated with the output pipeline;

the inlet of the gasifier is communicated with the liquid phase pipeline, and the outlet of the gasifier is communicated with the output pipeline and the gas phase pipeline;

a pressure regulator provided on the output line;

a gas phase control valve provided on the gas phase line;

a liquid-phase control valve provided on the liquid-phase line;

the controller is electrically connected with the pressure sensor and used for receiving the first pressure signal, the controller is electrically connected with the gasifier and used for controlling the gasifier to work, the controller is electrically connected with the gas phase control valve and used for controlling the gas phase control valve to open and close, the controller is electrically connected with the liquid phase control valve and used for controlling the liquid phase control valve to open and close, and the controller is electrically connected with the pressure regulator and used for controlling the pressure regulator to work.

2. The air supply system of claim 1, wherein the air supply system comprises:

at least two gasifiers which are arranged in parallel on the liquid-phase pipeline;

at least two pressure regulators are arranged in parallel on the output pipeline.

3. The gas supply system of claim 2, comprising two said gasifiers and two pressure regulators, wherein one of said gasifiers is in an operational state and the other of said gasifiers is in a shut-down standby state;

one of the pressure regulators is in a working state, and the other pressure regulator is in a closed standby state.

4. A gas supply system according to claim 3, wherein each of the gasifiers is connected to the liquid phase pipeline through a connecting pipeline, and a shut-off valve for controlling on-off of the connecting pipeline is provided on each of the connecting pipelines;

each stop valve is electrically connected with the controller respectively.

5. The gas supply system of claim 1, wherein the controller comprises a control unit, a control element, and a display unit, the control unit being electrically connected to the control element, the display unit, and the control unit being electrically connected to the pressure sensor, the gas phase control valve, and the liquid phase control valve;

the control element is electrically connected with the gasifier and the pressure regulator;

the display unit is used for displaying the first pressure signal.

6. The gas supply system of claim 5, wherein the controller further comprises an alarm unit electrically connected to the control unit.

7. The air supply system of claim 1, further comprising a remote monitoring platform communicatively coupled to the controller via a communication module.

8. The gas supply system of claim 1, further comprising a pressure transmitter disposed on the output line downstream of the pressure regulator for detecting a second pressure signal through the output line;

the pressure transmitter is electrically connected with the controller.

9. The gas supply system of claim 1, further comprising a temperature transmitter disposed on the output line downstream of the pressure regulator for detecting a temperature signal through the output line;

the temperature transmitter is electrically connected with the controller.

10. The gas supply system according to claim 1, wherein a liquid level sensor is provided on the tank for detecting a real-time liquid level signal in the tank; the liquid level sensor is electrically connected with the controller;

the gas supply system further comprises at least two combustible detectors, wherein at least one combustible detector is arranged on the periphery of the storage tank and is used for detecting a gas concentration signal on the periphery of the storage tank; at least one combustible detector is arranged at the periphery of the output pipeline and is used for detecting a gas concentration signal at the periphery of the output pipeline;

each combustible detector is electrically connected with the controller.