Monitoring equipment for natural gas transportation

Abstract

The utility model discloses a monitoring device for natural gas transportation, and relates to the technical field of natural gas transportation monitoring, the monitoring device comprises an air extractor, a detector and a central controller, the detector is used for obtaining a detection result of a detection piece on gas, and when the detection result is that external gas of a gas pipeline leaks, an alarm signal is transmitted to the central controller; the central controller is used for controlling the suction device; the fuel gas pipeline comprises a conveying terminal connected to fuel gas equipment, a switch valve is arranged on the tail section of the fuel gas pipeline and used for controlling the circulation state of the tail section of the fuel gas pipeline, and the suction device is arranged on the side of the tail section of the fuel gas pipeline and provided with a suction opening facing the tail section of the fuel gas pipeline. According to the utility model, the suction device is arranged beside the tail-section pipeline, so that when the tail-section pipeline breaks down to cause leakage of gaseous natural gas (coal gas), monitoring equipment can send a command to the suction device in time to start gas suction, and the indoor coal gas concentration is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas transmission monitoring, and in particular relates to a monitoring device and system for natural gas transmission. Background Art

[0002] In some scenarios, gas leakage may be caused by the failure of the natural gas pipeline to close the transmission terminal or the failure of the natural gas pipeline itself. In the prior art, gas detectors are often used to detect whether there is a gas leak. Usually, closing the switch valve of the gas pipeline in time after the leak can solve the gas leak problem in time.

[0003] However, the indoor pipeline also includes a terminal pipeline connected to a remote gas pipeline, and the terminal pipeline is connected to a switch valve, which cannot shut off the gas supply of the terminal pipeline. If there is a leak in the terminal pipeline of the gas pipeline, closing the switch valve will not solve the gas leakage problem, because the terminal pipeline will continue to supply gas to the room, increasing the risk of leakage and failing to effectively contain the leakage. Utility Model Content

[0004] In view of the above problems, the utility model discloses a monitoring device for natural gas transmission, including a gas extractor, a detector and a central controller, wherein the detector has a plurality of detection parts for detecting gas, the central controller is signal-connected to the detector, and the central controller is signal-connected to a control unit of the gas extractor;

[0005] The detector is used to obtain the detection result of the gas by the detection element, and transmit an alarm signal to the central controller when the detection result is external gas leakage in the gas pipeline;

[0006] The central controller is used to control the suction device;

[0007] The gas pipeline includes a delivery terminal connected to the gas equipment. The end section of the gas pipeline is provided with a switch valve, and the switch valve is used to control the flow state of the end section of the pipeline. The aspirator is arranged beside the end section of the pipeline, and the aspirator has a suction port facing the end section of the pipeline.

[0008] In some exemplary embodiments, the aspirator comprises a housing, the housing has a suction member, the housing has at least one exhaust port and the suction port;

[0009] A suction channel is formed between the suction port and the exhaust port, and the suction member sucks gas in the suction channel.

[0010] In some exemplary embodiments, a plurality of the aspirators are included, the terminal pipeline is located in the room, and each of the aspirators is arranged along the terminal pipeline.

[0011] In some exemplary embodiments, each of the aspirators is connected to an exhaust duct, and the exhaust duct has a plurality of air inlets connected to the exhaust ports.

[0012] In some exemplary embodiments, the housing includes a housing frame fixed to a fixed reference, the housing frame is a ring-shaped structure with through holes at both ends, and the suction member is disposed in the housing frame;

[0013] A suction cover is arranged on the through hole cover of the outer shell frame on one side facing the last section of the pipeline, and the suction cover is provided with the suction port.

[0014] In some exemplary embodiments, the detector is a gas detector, and the suction member is a fan.

[0015] Another object of the utility model is to disclose a gas transmission monitoring system for controlling the aforementioned natural gas transmission monitoring equipment, comprising:

[0016] A detection module, used for obtaining the gas concentration result detected by the detector, determining the gas concentration result, and sending an alarm message to the central control module when the gas concentration exceeds the standard;

[0017] The central control module is installed in the central controller and is used to receive various types of information sent by the detection module and control the suction machine; after receiving the alarm information, the central control module sends a start command to the suction machine to instruct the suction machine to start suction.

[0018] In some exemplary embodiments, the central control module further includes a switch valve control area and a communication area, the switch valve control area is used to control the opening and closing of the switch valve, and the communication area is used to send information to a remote end.

[0019] The beneficial effect of the utility model is that the utility model sets the aspirator beside the terminal pipeline, and when the terminal pipeline fails and causes gaseous natural gas (coal gas) leakage, the monitoring device can send a command to the aspirator in time to start extraction and reduce the indoor gas concentration. In some cases, the aspirator has an extraction port, and the extraction port is directly opposite to the terminal pipeline to improve the extraction effect.

[0020] In addition, the gas concentration can be detected in real time through the monitoring system, and the on-off valve can be automatically closed when the concentration exceeds the standard. If the gas concentration continues to exceed the standard after the on-off valve is closed, it is judged that the end section pipeline is faulty, and an alarm message can be sent to the remote end in time through the communication area.

[0021] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A structural diagram of a natural gas transmission monitoring device according to an embodiment of the utility model is shown;

[0024] Figure 2 Shows a structural diagram of an aspirator according to an embodiment of the utility model;

[0025] Figure 3 Shows a structural diagram of an aspirator according to an embodiment of the utility model;

[0026] Figure 4 The exploded structure diagram of the aspirator according to the embodiment of the utility model is shown;

[0027] Figure 5 A structural diagram of a monitoring system according to an embodiment of the utility model is shown;

[0028] Figure 6 A structural diagram of a monitoring system according to an embodiment of the utility model is shown.

[0029] In the attached figure:

[0030] 1-suction device, 2-end pipeline, 3-detector, 4-transmission terminal, 5-gas equipment;

[0031] 101 - suction piece, 102 - housing frame, 103 - suction cover, 104 - blades, 105 - cone, 106 - ribs. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] In an example, a monitoring device for natural gas transmission is provided beside a gas pipeline, and the gas pipeline includes a transmission terminal 4 connected to a gas device 5. The transmission terminal 4 is connected to any component or device that releases gaseous natural gas, such as the gas device 5. The end section 2 of the gas pipeline is provided with a switch valve, and the switch valve can be opened and closed to separate the end section 2 and the transmission terminal 4. The monitoring device can be set in different scenarios. For example, in a gas transmission station, a factory, a home kitchen, etc.

[0035] When gas leakage occurs in the last section of the pipeline 2, since the switch valve can only close the passage between the gas transmission terminal and the pipeline, the switch valve cannot realize the closing function when the last section of the pipeline 2 leaks.

[0036] In one example, the specific structure reference Figure 1 It is understood that the extractor 1 needs to be close to the pipeline to ensure that the leaked gaseous natural gas can be effectively extracted, so it is usually set at a position near the pipeline. The detector 3 can be set at different positions according to specific circumstances. In some preferred cases, Figure 1 As shown, it can be installed above or on the side around the pipeline to detect possible gas leaks to the greatest extent. Then, the gas concentration detected by the detector 3 is monitored by sensor technology, and the start of the aspirator 1 is triggered according to a preset threshold.

[0037] The monitoring device is provided beside the end section pipeline 2, and the monitoring device includes a central controller, a detector 3, and an aspirator 1 controlled by the central controller, the detector 3 has a plurality of detection parts that can detect gas, and the aspirator 1 has a suction port facing the end section pipeline 2. The detection part can be any sensor, and the detection process of the detector can adopt any gas detection means in the prior art, which will not be described in detail here.

[0038] The signal connection between the central controller and the detector, the signal connection between the central controller and the control unit of the aspirator 1, and the control process of the central controller over the aspirator 1 can be achieved through any circuit structure. For example, the signal connection between the central controller and the detector can be based on wireless communication or wired connection to achieve real-time data transmission and command control. Similarly, the central controller can be an existing hardware structure such as an integrated circuit with a core processor.

[0039] The above example is merely an example and does not limit the present invention.

[0040] Example 2

[0041] In this example, the structure of the aspirator 1 is referred to as Figure 2-3 It is understood that it includes a shell, and the shell has a suction piece 101. The shell has at least one exhaust port and the suction port. In this example, taking the structure of an exhaust port as an example, the shell is placed at a part of the channel of the suction piece 101. Since the channel through which the gas passes is narrower, the suction port can increase the suction force of the suction port and optimize the performance of the extractor 1. As mentioned above, a suction channel is formed between the suction port and the exhaust port, and the suction piece 101 sucks gas in the suction channel. When there is a gas leak in the terminal pipeline, the suction piece 101 can continuously suck the gas to the outside to ensure the safety of the indoor environment and wait for professionals to go to deal with it.

[0042] Example 3

[0043] In combination with the above-mentioned embodiments, in this example, when the pipeline is long indoors or in an area where people move around, such as a gas transfer station, a plurality of the extractors 1 may be included. The specific arrangement can be easily understood by those skilled in the art and is therefore not shown in the drawings. The terminal pipeline 2 is located indoors, and each of the extractors 1 is arranged along the terminal pipeline 2. Each of the extractors 1 is connected to an exhaust pipe, and the exhaust pipe has a plurality of air inlets connected to the exhaust port.

[0044] Example 4

[0045] In this example, referring to the foregoing embodiment, Figure 4 The explosion structure shown, the shell includes a shell frame 102 fixed to a fixed reference. As shown in the figure, the shell frame 102 is a circular ring structure, which can be fixed in the wall in this example. The detector 3 is a gas detector 3, and the suction piece 101 is a fan.

[0046] Combination Figure 3 and Figure 4It is understood that a plurality of ribs 106 extend from the inner side of the outer shell frame 102, and the ribs 106 converge to the central axis of the outer shell frame 102. A ring body for setting a fan is fixed to the end section of each rib 106. The suction member 101 includes a cone 105 and blades 104 extending from the cone 105. The cone 105 is rotatably arranged in the ring body at the center of the outer shell frame 102, and the blades 104 can be driven by any driving device, such as a motor.

[0047] In this example, a suction cover 103 is provided on the through hole cover of the outer shell frame 102 facing the end pipe 2. The suction cover 103 is an elliptical arc plate. The edge of the suction cover 103 is fixedly connected to the edge of one side of the outer shell frame 102, and can be fixed by welding in this example. A notch is opened on one side of the suction cover 103, and the notch is the suction port. In different implementations, the suction port can also be provided with a streamlined structure facing the end pipe to enhance the suction function.

[0048] Example 5

[0049] This embodiment discloses a monitoring system for gas transmission, referring to Figure 5 It is understood that the monitored gas pipeline includes a delivery terminal 4 connected to a gas device 5, and the end section 2 of the gas pipeline is provided with a switch valve, which can open and close to separate the end section 2 and the delivery terminal 4, and a monitoring device for monitoring the end section 2 is provided next to the end section 2.

[0050] In this embodiment, the monitoring device includes a central controller, a detector 3 and an aspirator 1 for aspirating gas, wherein the aspirator 1 has a suction port facing the last section of the pipeline 2 .

[0051] In some embodiments, as described in Example 2, the aspirator 1 includes a housing, the housing has a suction member 101, the housing has at least one exhaust port and the suction port, a suction channel is formed between the suction port and the exhaust port, and the suction member 101 sucks gas in the suction channel. The device includes a plurality of the aspirators 1, the terminal pipeline 2 is located indoors, and each of the aspirators 1 is arranged along the terminal pipeline 2.

[0052] In some embodiments, as described in Example 3, each of the aspirators 1 is connected to an exhaust duct, and the exhaust duct has a plurality of air inlets connected to the exhaust ports.

[0053] In some embodiments, as described in Example 4, the housing of the device includes a housing frame 102 fixed to a fixed reference, the housing frame 102 is a ring-mounted structure with through holes at both ends, and the suction piece 101 is arranged in the housing frame 102; the through hole cover of the housing frame 102 on one side facing the end pipeline 2 is provided with a suction cover 103, and the suction cover 103 is provided with the suction port. The detector 3 is a gas detector 3, and the suction piece 101 is a fan.

[0054] Based on the above embodiments, in this example, Figure 5 It is understood that the monitoring system controls the monitoring device, including:

[0055] The detection module is used to obtain the gas concentration result detected by the detector 3, determine the gas concentration result, and send an alarm message to the central control module when the gas concentration exceeds the standard. The detector 3 can use sensor technology to monitor the gas concentration detected by the detector 3, and trigger the start of the aspirator 1 according to a preset threshold. In addition, a programmable controller (PLC) or a microprocessor can also be used to achieve automatic control, monitor the gas concentration and adjust the operation of the aspirator 1 through a pre-set program. The relevant content belongs to the means in the prior art and will not be repeated here.

[0056] The central control module is installed in the central controller and is used to receive various information sent by the detection module and control the aspirator 1; after receiving the alarm information, the central control module sends a start command to the aspirator 1 to instruct the aspirator 1 to start suction. The central control module can be a control unit with a processor, which has the ability to receive and process sensor data from the detection module, such as a single-chip microcomputer, an integrated circuit board, etc.

[0057] In this example, once the central control module receives the alarm information, it immediately analyzes the information and determines whether it is necessary to start the extractor 1 to deal with the potential risk. Then, the central control module sends a start command to the extractor 1 according to the determination result.

[0058] Example 6

[0059] In this example, the above embodiments are combined Figure 6 It is understood that the central control module also includes a switch valve control area and a communication area. The switch valve control area is used to control the opening and closing of the switch valve, and the communication area is used to send information to a remote end.

[0060] In this example, the detector 3 continuously detects the concentration of gasified natural gas (coal gas) in the space. The detector 3 has a built-in threshold. When the concentration exceeds the standard, it sends an alarm message to the central control module and sends a command to close the valve to the switch valve control area. In some specific cases, the switch valve can be an electric ball valve or an electric butterfly valve or other valves of any structure. An electric drive device is provided at the rotation part of the switch valve. The switch valve control area sends a control command to the electric drive device, and the electric drive device controls the switch valve to close.

[0061] After completing the above steps, the detector 3 continues to detect the gas concentration. For a period of time, the gas concentration continues to exceed the threshold, so the central control module continues to receive the alarm information. If the central control module still receives the alarm signal after the preset time period, that is, the gas concentration in the space has not dropped below the threshold range. At this time, the central control module issues a transmission instruction to the communication area, and the communication area transmits the alarm information to the remote end, which can be a communication base station or other transfer station. The remote end can further transmit the alarm information to the mobile terminal or directly send it to the fire alarm receiving device through a specific frequency band.

[0062] The preset time period can be set according to the specific suction power of the aspirator 1. As mentioned above, when the gas concentration still does not decrease after the switch valve is closed, it means that there is a gas leak in the terminal pipeline 2. At this time, the aspirator 1 continues to suck to avoid excessive gas concentration. At the same time, sending an alarm message to the remote end through the communication area can promptly notify the user when the gas pipeline is unattended. In particular, the device of this embodiment is set in the case of a home kitchen, which can quickly remind the user that there is a gas leak in the home and the automatic valve closing is invalid.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A monitoring device for natural gas transmission, characterized in that: It comprises a gas extractor, a detector (3) and a central controller, wherein the detector (3) has a plurality of detection components for detecting gas, and the central controller is connected to the detector (3) by signal; The detector (3) is used to obtain the detection result of the gas by the detection element, and transmit an alarm signal to the central controller when the detection result is that the external gas of the gas pipeline is leaking; The central controller is connected to the control unit of the aspirator (1) by signal, and the central controller is used to control the aspirator (1); The gas pipeline comprises a delivery terminal (4) connected to a gas device (5); the end section (2) of the gas pipeline is provided with a switch valve, the switch valve is used to control the flow state of the end section (2); the aspirator (1) is arranged beside the end section (2), and the aspirator (1) has a suction port facing the end section (2).

2. The monitoring device for natural gas transmission according to claim 1, characterized in that: The aspirator (1) comprises a shell, the shell has a suction piece (101), and the shell has at least one exhaust port and the suction port; A suction channel is formed between the suction port and the exhaust port.

3. The monitoring device for natural gas transmission according to claim 1 or 2, characterized in that: The invention comprises more than two aspirators (1), the terminal pipeline (2) is located indoors, and the aspirators (1) are distributed along the terminal pipeline (2).

4. The monitoring device for natural gas transmission according to claim 3, characterized in that: The aspirators (1) are all connected to an exhaust pipe, and the exhaust pipe guides the gas output by the aspirators (1); The exhaust duct is provided with air inlets corresponding in number to the number of the aspirators (1), and the air inlets are used to be connected to the exhaust ports of the aspirators (1).

5. The monitoring device for natural gas transmission according to claim 2, characterized in that: The shell comprises a shell frame (102), the shell frame (102) is a ring-shaped structure with through holes arranged at both ends, and the suction piece (101) is arranged in the shell frame (102); A suction cover (103) is provided on the through hole cover of the outer shell frame (102) on the side facing the end section pipeline (2), and the suction cover (103) is provided with the suction port.

6. The monitoring device for natural gas transmission according to claim 2, characterized in that: The detector (3) is a gas detector (3), the central controller is an integrated circuit board, and the suction piece (101) is a fan.

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