WO2020107600A1

WO2020107600A1 - Smart pipeline

Info

Publication number: WO2020107600A1
Application number: PCT/CN2018/123465
Authority: WO
Inventors: 王新民
Original assignee: 青州市爱新迪自动化设备有限公司
Priority date: 2018-11-28
Filing date: 2018-12-25
Publication date: 2020-06-04

Abstract

Disclosed is a smart pipeline. When the pipeline leaks, the pipeline automatically closes a corresponding valve, and an appropriate personnel member is instructed to check and repair the pipeline. The smart pipeline comprises two pipe fittings and two control systems. The two pipe fittings are respectively a leakage protection valve and a flow sensor. When a leak is detected, the leakage protection valve can automatically close. The two control systems are a smart pipeline remote control device and a smart pipeline control center. The smart pipeline remote control device performs smart remote control to close or open a leakage protection valve at each position. The smart pipeline control center receives various signals transmitted by the smart pipeline remote control device and the flow sensor, and can close the leakage protection valve in a timely manner.

Description

An intelligent pipeline

Technical field

The invention relates to the technical field of intelligent closing of various pipeline leakage self-checking.

Background technique

Now life is inseparable from all kinds of pipelines, water pipelines, gas pipelines, heating pipelines, oil pipelines and chemical pipelines, and with the improvement of living standards, the construction of pipelines will be more and more, pipelines bring us convenience at the same time It also brings different levels of security risks. As the time of pipeline use increases, the hazards caused by pipeline aging will become more obvious. However, for a long time, automated warning and detection of pipelines have been faced with the world in practical applications. Based on this problem, the present invention provides an intelligent solution-an intelligent pipeline, once the pipeline leaks gas and liquid, the pipeline itself can detect the location of the leak and automatically close the valve that should be closed. Then notify the relevant personnel to repair the faulty pipeline.

Fundamental

An intelligent pipeline can be applied to various pipelines such as gas pipelines, running water pipelines, heating pipelines, oil supply pipelines, and chemical industries. Before understanding the principles of implementing an intelligent pipeline, we must first understand four concepts: 1. Leakage protection Valve, 2. Flow sensor, 3. An intelligent pipeline remote control device, 4. An intelligent pipeline analysis processing control center.

1. Leak protection valve-The leak protection valve is not a mysterious valve. The leak protection valve is a valve that can receive external signals (wired or wireless signals) and can open and close, and can emit its own status signal. A valve that can emit signals and be controlled by remote control plays a vital role in an intelligent pipeline. It is a part that performs actions. It is impossible to realize an intelligent pipeline without a leak-proof valve. Different fluids can achieve leakage protection through different methods. Leakage protection is like a leakage protection switch. Leakage protection is to close the electrical switch when leakage occurs. Leakage protection valve is to close the front leakage protection valve when the pipeline is leaking. According to the function, the leakage protection valve can be divided into two types: normally open leakage protection valve and normally closed leakage protection valve; according to the use, it can be divided into gas leakage protection valve and liquid leakage protection valve; according to the pipeline, it can be divided into a variety of : 1. An intelligent gas pipeline leakage protection valve, 2. An intelligent water pipeline leakage protection valve, 3. An intelligent oil pipeline leakage protection valve, 4. An intelligent heating pipeline leakage protection valve, 5. An intelligence Chemical pipeline leakage protection valve.

2. Flow sensor-is a sensor that can detect the flow of gas and liquid in the pipeline. A flow sensor on an intelligent pipeline must be able to emit a pipeline flow status signal, and the flow status signal must be a digital signal. This digital signal Can be accurately divided, that is, the flow rate of the pipeline can be divided into 0-100 files, can also be divided into 1-10 levels, can also be divided into 0-1, that is, flow or no flow, according to the different requirements of an intelligent pipeline installation The flow sensor is like nerve endings or facial features on the human body. It constantly detects the flow of the pipeline, and then transmits the flow report (digital status signal) to an intelligent pipeline remote control device or a Intelligent pipeline analysis processing control center. The classification of the flow sensor, according to the difference between the normal flow or the normally closed pipeline, the sensor is divided into: a normal flow type flow sensor and a normally closed type sensor, the normal flow type flow sensor is installed on the normal flow type pipeline to transport oil , Gas transmission and other transportation pipelines and uninterrupted use of pipelines, heating pipelines are normal flow pipelines, fluids installed in pipelines with normally closed sensors often do not flow, such as: gas pipelines and water pipelines in the community It is a normally closed pipeline. According to the degree of accuracy, it can be divided into: precise flow sensor and non-ordinary flow sensor, the use can be imagined. If the fluid flowing from the pipeline can be divided into: gas flow sensor, cold water flow sensor, hot water flow sensor, oil flow sensor, etc., a different kind of intelligent pipeline should use different flow sensors, a kind of intelligent pipeline The most critical component is the flow sensor, which is the component that collects pipeline flow information. Once the collected information is inaccurate, it will provide inaccurate data to an intelligent pipeline analysis and processing control center. The control center will make a wrong judgment and issue Wrong instruction. Therefore, the quality of the flow sensor determines the quality of an intelligent pipeline.

3. An intelligent pipeline remote control device, which can receive the status signals of leakage protection valves and flow sensors on various pipelines at close range, and can transmit all the collected signals to an intelligent pipeline analysis and processing control center, and can also be controlled remotely. Close or open the short-distance leakage protection valve. In some special places, it is more perfect to add some induction devices to an intelligent pipeline remote control device. For example, an intelligent pipeline remote control device in the home kitchen can be installed on the human body. The induction module and the smoke detection module can be installed to eliminate the fire caused by forgetting to turn off the gas stove, and the smoke detection module can be installed to eliminate the explosion caused by the fire.

4. An intelligent pipeline analysis processing control center --- is the entire intelligent pipeline control system, that is, the brain of an intelligent pipeline, which can receive from a smart pipeline remote control device, a smart pipeline leakage protection The status information of the valve and flow sensor, and then make a comprehensive analysis to analyze whether there is a pipeline leak, if there is a location, and finally decide which leak protection valve should be closed, and which related personnel should be notified where to repair the pipeline.

As shown in Figure 1: For a relatively long straight pipeline, we can install the leakage protection valve and flow sensor on the pipeline as needed. The installation sequence is to install according to the direction of the pipeline flow:

In order to facilitate the analysis of the leakage position of the pipeline, the abbreviated codes for the pipeline, leakage protection valve and flow sensor are as follows:

Leak protection valve -1 = valve 1, pipeline -1 = pipe 1, flow sensor -1 = sense 1

Leak protection valve-2=valve 2, pipeline-2=pipe 2, flow sensor-2=sense 2

Leak protection valve-3 = valve 3, pipeline-3 = pipe 3, flow sensor-3 = sense 3

……………………………………………………………

Leak protection valve-9=valve 9, pipeline-9=pipe 1, flow sensor-9=sense 9

Leak protection valve -10 = valve 10, pipeline -10 = pipe 10, flow sensor -10 = sense 10

Pipe connection method:

Valve 1+pipe 1+sense 1+valve 2+pipe 2+sense 2 valve 3+pipe 3+sense 3 valve 4+pipe 4+sense 4+valve 5+pipe 5+sense 5

Figure 1 is a leak analysis: the location of the leak:

If, Sense 1> Sense 2 = Sense 3 = Sense 4 = Sense 5; tube 1 leaks, valve 1 closes;

If, Sense 1 = Sense 2> Sense 3 = Sense 4 = Sense 5; the tube 2 leaks and the valve 2 closes;

If, Sense 1 = Sense 2 = Sense 3> Sense 4 = Sense 5; the tube 3 leaks and the valve 3 closes;

If, Sense 1 = Sense 2 = Sense 3 = Sense 4> Sense 5; the tube 4 leaks and the valve 4 closes;

If, Sense 1 = Sense 2 = Sense 3 = Sense 4 = Sense 5; the pipeline is normal, there is no leakage, and the valve is not closed.

Figure 2 Leak analysis

As shown in Figure 2, if:

Sense 2 + Sense 6 = Sense 1, indicating that the pipeline is normal and there is no leakage. Do not close the valve;

Sense 2 + Sense 6 <Sense 1, indicating that the pipeline is abnormal, the pipe 1 is leaking, and the valve 1 is closed;

As shown in Figure 3, if:

Sense 3 + Sense 7 = Sense 2, indicating that the pipeline is normal, there is no leakage, and the valve is not closed;

Sense 3 + Sense 7 <Sense 2, indicating that the pipeline is abnormal, the pipe 2 is leaking, and the valve 2 is closed;

Sense 4 + Sense 8 = Sense 3, indicating that the pipeline is normal, there is no leakage, and the valve is not closed;

Sense 4 + Sense 8 <Sense 3, indicating that the pipeline is abnormal, the pipe 3 is leaking, and the valve 3 is closed;

Sense 5 + Sense 9 = Sense 4, indicating that the pipeline is normal, there is no leakage, and the valve is not closed;

Sense 5 + Sense 9 <Sense 4, indicating that the pipeline is abnormal, the tube 4 is leaking, and the valve 4 is closed;

An intelligent gas pipeline-gas pipeline

With the improvement of living standards, there are more and more pipeline constructions, especially gas pipelines will be extended to all parts of the country, including rural areas. In short, natural gas pipelines will only increase and will not decrease. However, natural gas brings us many benefits at the same time. It also brings an unsafe factor. The harm caused by gas leakage and explosion will hurt a few people, and the serious harm will take a lot of people’s lives. For this reason, people, especially the elderly, use it. Gas always lifts your heart. For this kind of lift, there is a reason-that is, gas leakage does not occur 100%. Although the invention of the gas alarm shut-off device has been invented, it is not used much in life because the gas alarm There are several fatal flaws in the closing device. One is that it cannot be closed when the power is cut off. The other is that the gas detector will be falsely reported or not reported after a long time. The third is that the manipulator used to close the valve is sometimes closed (not used for a long time) The gas main valve will be weak to close, because the pipeline valve that has not been used for a long time will rust. To this end, I invented an intelligent pipeline, which gives the pipeline an intelligence to detect the location of the pipeline leakage and can intelligently close-close the valve that should be closed. Once the gas pipeline leaks, the gas pipeline itself will be automatically closed. The valve of the gas pipeline, and then notify the relevant personnel to maintain and repair the faulty gas pipeline.

From the end of the gas pipeline, the gas stove, hose, front valve of the stove, gas meter, front valve of the gas meter, and metal pipes are connected to the outdoor gas pipeline branch main valve.

1. The first pass of an intelligent gas pipeline is a gas stove. An intelligent gas pipeline has special requirements for a gas stove:

1. The combustion status of the gas stove must have feedback information, which can be fed back to a smart pipeline home host through wireless protocols such as WiFi and Bluetooth --- an intelligent pipeline remote control device, as long as the gas stove has this function, a kind of intelligence Only the pipeline remote control device can understand the combustion state of the gas stove. If an intelligent pipeline remote control device finds no one in the kitchen and does not turn on the gas stove regularly, it will forcibly turn off the gas stove to avoid the fire caused by long-term combustion of the gas stove;

2. The gas stove can automatically close the intelligent self-closing valve (front valve of the stove) without burning. The gas stove with only feedback information is still not perfect. Although the gas stove has a flameout protection function, there is still a gas leakage hazard due to flameout. It is common sense to cause a fire when protection problems occur, so the gas stove should close the front valve of the stove when it is not burning. However, many people often forget to close the front valve of the stove, especially the elderly, so a gas stove on an intelligent pipeline must be able to Remotely closing the intelligent self-closing valve means that when the gas stove is turned off, the intelligent self-closing valve will automatically close because the gas stove does not burn;

3. A gas flow sensor (flow switch) must be installed on the gas stove to detect the flow of the pipeline through this sensor, and the hose installed at the initial end of the gas stove, that is, the valve connected to the front of the stove must first be connected to the gas flow On the sensor (flow switch), with the presence of the sensor, it will feed back the gas flow of the gas stove to an intelligent pipeline remote control device, which will monitor the leakage of the gas stove Because there are many internal interfaces of the gas stove, and generally the gas stove has two burners, it should also be installed a flow sensor on the gas stove.

2. The second gate of an intelligent gas pipeline is the front valve of the stove, and the requirements of an intelligent gas pipeline are:

1. It must be an intelligent self-closing valve that can be closed by receiving a remote control signal. The self-closing valve can be closed by remote control and must be able to feed back information to an intelligent pipeline home host (an intelligent pipeline remote control device). When the gas hose leaks, the intelligent self-closing valve (just like the human hand can receive the command of the brain to press and hold the bleeding blood vessel) to close the leaking gas pipeline valve and wait (like platelets in the human body) -) The arrival of pipeline maintenance workers;

2. A gas flow sensor (flow switch) must be installed. The sensor must be able to feed information back to an intelligent pipeline home host (an intelligent pipeline remote control device). The sensor is like a nerve ending on a human body , It will report the gas flow situation at this location to a smart pipeline remote control device equivalent to the human brain and a smart pipeline analysis processing control center through wired or wireless signals;

3. Over-flow cut-off function (mechanical function of the self-closing valve itself)-when the gas hose loosens, breaks, burns, rat bites, and ruptures exceed the set flow rate, the valve automatically cuts off the gas source;

4. Overpressure protection function (mechanical function of the self-closing valve itself)-when the pressure regulator fails, the air pressure suddenly rises above the safety pressure, causing the flow to exceed the value, the valve automatically cuts off the air source, with this function connecting the front valve of the stove The gas stove hose has double protection,

5. Ultra-low pressure anti-tempering function (mechanical function of the self-closing valve itself)-when the pressure regulating station fails or other reasons, resulting in insufficient gas supply to the gas pipeline, the valve automatically shuts off the gas source to prevent the occurrence of tempering accidents;

6. Micro-leakage detection function (mechanical function of self-closing valve itself)-turn off the burner switch, turn on the self-closing valve knob, turn off the air intake source (gas meter front valve), observe the self-closing valve after 10-20 minutes Open state, indicating that the hose, interface and burner switch are normal;

7. Gas shut-off function (mechanical function of the self-closing valve itself)-when the gas pipeline stops gas supply due to unexpected events, fault maintenance, etc., the valve closes automatically;

The 3-7 function is the mechanical function of the intelligent self-closing valve itself. With the protection of these mechanical functions, the gas hose that is most prone to leakage is double protected. One is a kind of intelligent pipeline leakage self-protection, and the other is intelligent Self-protection of self-closing valve;

3. The third pass of the gas pipeline is the front valve of the gas pipeline, which is the main valve of the household gas pipeline. The requirements for the front valve of the gas pipeline are:

1. The gas flow sensor is installed, that is, the flow switch can send its own status signal according to the flow rate. When the current pipeline leaks, the flow sensor on the intelligent self-closing valve will have zero flow, and the household pipeline is always The valve flow is not zero, which means that the pipeline between the intelligent self-closing valve and the home pipeline main valve is leaking. The home gas main valve should be closed. An intelligent pipeline remote control device will issue a command to close the home gas pipeline main valve;

2. It can be closed and opened remotely, that is, it can be controlled by an intelligent pipeline analysis and processing control center, and only in this way can the home gas pipeline main valve be closed when the pipeline leaks.

4. The fourth pipe of the gas pipeline is the outdoor pipeline valve. The requirements for the outdoor pipeline valve are the same:

1. The gas flow sensor is installed; when the current pipeline leaks, the sum of the sensor flow of each household pipeline master valve will be zero, and the outdoor pipeline master valve flow is not zero, which means that smart outdoor There is a leak between the main pipeline valve to the home, at this time the outdoor main valve should be closed, and an intelligent pipeline remote control device will issue a command to an intelligent pipeline analysis and processing control center to close the outdoor gas pipeline main valve;

2. It can be turned off and on remotely, that is, it can be controlled by an intelligent pipeline analysis and processing control center. Only in this way can the pipeline main valve be closed in time;

5. The requirements for an intelligent pipeline remote control device are:

1. It can receive the feedback information of the leakage protection valve and feed it back to an intelligent pipeline analysis and processing control center of the gas company, so that all the households with gas pipelines and indoor and outdoor can be known for the first time in the monitoring room of the gas company Pipeline leakage;

2. It can sense the presence of people in the kitchen. This requirement will prevent people from forgetting that the unmanned gas stove in the kitchen is still burning, so it also eliminates the fire problem caused by the long-term combustion of the gas stove. When it is necessary to cook regularly It can be used to start the gas stove to be turned off regularly. If the gas stove does not receive the signal to close the function, the gas stove can be turned off regularly by closing the front valve of the stove;

3. A smoke detector is installed, this function can make the leakage protection valve on each gas pipeline be closed as soon as possible due to other reasons to avoid causing a larger fire-gas explosion;

4. The gas stove can be turned off regularly (if the gas stove is not an intelligent gas stove, it cannot be turned off by an intelligent pipeline remote control device, we can close the gas stove by closing a valve of an intelligent pipeline remote control device), this function can Make it more convenient for people to stew vegetables (including cooking and steaming rice);

5. If the voice control module is installed, it will be more convenient to control the gas stove. This function can be optional but not required.

6. Examples:

First, let's look at the principle that the leak of the hose connecting the front valve of the pipeline stove and the gas stove is automatically closed: as shown in Figure 4, when the two gas flow switches on the front valve of the stove and the gas stove are both turned on The front valve of the leak-proof stove will not be closed because the pipeline is in a normal combustion state. This structure is suitable for an intelligent pipeline at the end of the gas and often closed

Second, let's take a look at Figure 5. When the two gas flow switches on the front valve and the gas stove are closed, the front valve of the leak protection stove will not be closed, because the gas in the pipeline does not flow at this time, but this This state indicates that the hose is not leaking.

Third, let's look at Figure 6 again. When the gas flow switch on the front valve of the stove is on and the gas flow switch on the gas stove is off, the front valve of the leak-proof stove will be closed because the gas flow on the gas stove The switch has been turned off, indicating that the gas stove has been turned off. The gas is no longer supplied to the gas stove, and the gas flow switch on the front valve of the stove is turned on, indicating that the hose is leaking. This should close the front valve of the stove.

Fourth, let's take a look at Figure 7. Figure 7 is a schematic diagram of three gas equipments managed by the home main valve. From this figure, we can analyze that if there is a leak, the self-closing valve will automatically close.

Figures 4-7 are schematic diagrams of an intelligent pipeline suitable for gas pipelines that are often closed at the gas end. Figure 7 is suitable for an intelligent pipeline that is often closed.

Of course, an intelligent pipeline remote control device and an intelligent pipeline analysis and processing control center are needed to realize the automatic closing of the leakage protection valve.

An intelligent water pipeline-liquid pipeline

The components needed for the automatic closing system of water pipeline leakage: intelligent water leakage protection valve (can receive the remote control signal to open and close), intelligent water nozzle (the water nozzle capable of transmitting wireless signal and containing liquid flow switch), an intelligent pipeline remote control device and An intelligent pipeline waterproof leakage system.

The most important part of an intelligent water pipeline is: a water leakage protection valve, which must have the function of receiving remote opening and closing.

Figure 8-9 is the structure of the intelligent water leakage protection valve, which consists of three parts: 1. The liquid flow switch can detect whether the water is flowing, and can feedback its own status signal to an intelligent pipeline remote control device and a On the intelligent pipeline analysis and processing control center, 2. Pulse solenoid valve, an intelligent pipeline remote control device and an intelligent pipeline analysis device that can receive the remote control signal to open or close the solenoid valve, and can feedback its own opening or closing status Processing control center; 3. The water pipe generator is responsible for supplying the valve and other electrical accessories nearby. Figure 5 is the open state, and Figure 6 is the closed state. The valve of this structure is suitable for the water pipe that is often closed and is preferably the front meter valve of the end of the pipe, for example: the front of the water meter for households, factories, companies, etc. Valves, not suitable for long-term water delivery pipelines;

Figures 10-11 are another kind of water pipeline suitable for long-term flow.

The first structure of water (leakage protection valve leakage automatic closing valve) leakage protection valve, its working principle is: as shown in Figure 12, when valve 1 is in the closed state, if valve 2 is in the open state, then explain There is a leak between the two valves and valve 2 needs to be closed.

Claims

Intelligent pipelines are divided into: intelligent gas pipelines, intelligent water pipelines, intelligent petroleum pipelines, intelligent chemical pipelines, and intelligent heating pipelines and other pipelines containing valves;
The intelligent gas pipeline according to claim 1, characterized in that the intelligent gas pipeline includes an intelligent remote control device, an intelligent pipeline control center, an intelligent gas stove, various gas pipeline leakage protection valves; a gas flow sensor;
The intelligent water pipe according to claim 1, wherein the intelligent water pipe includes an intelligent remote control device, an intelligent water pipe control center, a water pipe leakage protection valve, an intelligent water nozzle, and a water flow sensor;
The intelligent oil pipeline according to claim 1, wherein the intelligent oil pipeline includes an intelligent remote control device, an intelligent pipeline control center, an oil pipeline leakage protection valve, and an oil flow sensor;
The intelligent heating pipeline according to claim 1, characterized in that the intelligent heating pipeline includes an intelligent remote control device, an intelligent pipeline control center, a heating pipeline leakage protection valve, and a water flow sensor;
The intelligent remote control device according to claims 2-5, characterized in that it can not only receive status signals from leak protection valves on various pipelines and gas-liquid flowers at various positions, but also can intelligently remotely close or open each position Leakage protection valve;
The intelligent pipeline control center according to claims 2-5, characterized in that it can receive various signals from the intelligent remote control device and can timely close the leakage protection valves at various positions on the official road that can be networked;