Urban gas pipeline pressure maintaining and leakage detecting device and PE valve inner leakage detecting device

Abstract

The utility model relates to the field of natural gas, in particular to an urban gas pipeline pressure maintaining and leakage detecting device and a PE valve inner leakage detecting device. The leak hunting device comprises relief valves arranged on two sides of a natural gas PE valve (1), the relief valves are respectively connected with a pressure maintaining leak hunting device (2), a reducer (3) is arranged above a relief valve port (2), the reducer (3) is connected with a quick connector (4), a one-way valve (5) is connected above the quick connector (4), and a high-precision digital display pressure gauge (7) is connected above the one-way valve (5). Compared with a traditional leak detection method, the device has obvious advantages. Firstly, the advanced non-contact measurement technology is adopted, frequent manual inspection is not needed, and the accuracy and efficiency of leakage detection are greatly improved. Secondly, the device can monitor the pressure change of the pipeline in real time, tiny leakage can be found in time, and expansion of leakage accidents is avoided. And finally, the device also has remote monitoring and alarming functions, so that once leakage occurs, related personnel can be immediately notified to deal with the leakage, and the safe operation of the gas pipeline is ensured.

Description

Technical Field

[0001] The utility model relates to the field of natural gas, in particular to a device for detecting pressure-maintaining leakage of urban gas pipelines and internal leakage of PE valves. Background Art

[0002] As a vital artery of urban energy supply, the safe operation of urban gas pipelines is directly related to residents' lives and public safety. However, due to pipeline aging, poor construction quality, and other factors, gas pipeline leaks occur frequently, posing a serious threat to people's lives and property. To effectively prevent and promptly detect gas pipeline leaks, urban gas pipeline pressure maintenance leak detection involves maintaining pressure in the gas pipeline to detect leaks. The PE valve internal leak detection device is specifically designed to detect leaks within PE (polyethylene) valves.

[0003] Common pressure maintenance leak detection methods

[0004] 1. Manual detection method: Usually use soapy water to apply to the pipe joint or valve surface to observe whether there are bubbles. The generation of bubbles indicates that there may be a leak.

[0005] 2. Electronic detection method: Use special electronic detection instruments, such as gas detectors, to detect leaking gas.

[0006] The drawbacks of these technologies are that manual monitoring consumes a lot of manpower and the amount of maintenance required in cities is huge.

[0007] On September 26, 2024, a search was conducted in the China Patent Publication Database with "natural gas and PE and valve and leakage and pressure difference" as the abstract keywords, and the option of allowing synonym expansion was checked, but no relevant literature was found.

[0008] On September 26, 2024, an abstract search for "natural gas and PE and valve and leakage and pressure difference" was conducted on China National Knowledge Infrastructure, and no relevant literature was found.

[0009] On September 26, 2024, a search for "Natural gas WITH PE WITH valves WITH leakage WITHpressure difference" was conducted on the website of the United States Patent and Trademark Office, and no relevant literature was found; the search URL was https: / / ppubs.uspto.gov / pubwebapp / .

[0010] On September 26, 2024, a search was conducted on the Korean Intellectual Property Office for "Natural gas and PE and valves and leakage and pressure difference", but no relevant literature was found; the search URL was http: / / eng.kipris.or.kr / enghome / main.jsp.

[0011] On September 26, 2024, a search was conducted on WIPO's https: / / patentscope2.wipo.int / for "Natural gas and PE and valves and leakage and pressure difference".

[0012] On September 26, 2024, a search for "Natural gas and PE and valves and leakage and pressure difference" was conducted on the Japan Patent Office website https: / / www.j-platpat.inpit.go.jp / , but no relevant literature was found.

[0013] It is completely different from the conception of this patent. Utility Model Content

[0014] Purpose of the utility model: To provide a better urban gas pipeline pressure leakage detection and PE valve internal leakage detection device. The specific purpose can be seen in the multiple substantial technical effects of the specific implementation part.

[0015] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0016] The device for leak detection of pressure-maintaining gas pipelines and internal leakage of PE valves is characterized in that the leak detection device comprises relief valve ports arranged on both sides of the natural gas PE valve 1, each relief valve port is connected to a pressure-maintaining leak detection device, above the relief valve port 2 is a reducer 3, the reducer 3 is connected to a quick connector 4, above the quick connector 4 is connected the pressure-maintaining leak detection device, the pressure-maintaining leak detection device comprises a one-way valve 5, and above the one-way valve 5 is connected a high-precision digital pressure gauge 7.

[0017] A further technical solution of the present invention is that a four-way valve 6 is also arranged between the one-way valve 5 and the high-precision digital pressure gauge 7. The two four-way valves 6 on the left and right sides of the natural gas PE valve 1 are connected by a high-pressure hose 9, and a pressure transmitter 8 is also installed on each four-way valve 6.

[0018] A further technical solution of the present invention is that the PE valve internal leakage detection device and the corresponding PE valve are installed in a natural gas maintenance well.

[0019] A further technical solution of the present invention is that the high-precision digital pressure gauges 7 are Internet of Things self-test alarm devices, and the pressure of these high-precision digital pressure gauges 7 can be displayed in the central control room.

[0020] A further technical solution of the present invention is that an alarm device is provided in the natural gas maintenance well, and the alarm device is a natural gas leakage alarm.

[0021] The present invention, employing the above technical solution, has the following beneficial effects compared to existing technologies: Compared to traditional leak detection methods, the device offers significant advantages. First, it utilizes advanced non-contact measurement technology, eliminating the need for frequent manual inspections and significantly improving leak detection accuracy and efficiency. Second, the device can monitor pipeline pressure changes in real time, promptly detecting minor leaks and preventing leaks from escalating. Finally, the device also features remote monitoring and alarm capabilities. In the event of a leak, it can immediately notify relevant personnel to address the situation, ensuring the safe operation of the gas pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to further illustrate the present invention, the following is a further description with reference to the accompanying drawings:

[0023] Figure 1 A structural diagram of a utility model;

[0024] Figure 2 A structural diagram of the comprehensive layout of the utility model;

[0025] Among them: 1. Natural gas PE valve; 2. Release valve port; 3. Reducer and reducer; 4. Quick connector; 5. Check valve; 6. Cross-connect; 7. High-precision digital pressure gauge; 8. Pressure transmitter; 9. High-pressure hose. DETAILED DESCRIPTION

[0026] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] This patent provides multiple parallel solutions. The differences in descriptions are improvements or parallel solutions based on the basic solution. Each solution has its own unique characteristics. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described in this article can be any fixing method such as threaded fixing, bolt fixing, or gluing.

[0029] Example 1: Combination Figure 1 and Figure 2A device for detecting pressure-maintaining leaks in urban gas pipelines and internal leakage in PE valves is characterized in that the device comprises relief valve ports arranged on either side of a natural gas PE valve 1, each of which is connected to a pressure-maintaining leak detection device. Above the relief valve port 2 is a reducer 3 connected to a quick connector 4, which is connected to the pressure-maintaining leak detection device above the quick connector 4. The pressure-maintaining leak detection device comprises a one-way valve 5, and a high-precision digital pressure gauge 7 connected above the one-way valve 5. The essential technical effect and implementation process of this technical solution, namely its basic functions, are as follows: detecting internal leakage in the valve by pressure differential. When the valve is directly connected to the pressure-maintaining device, the device continuously monitors the pressure at both ends of the valve. If a leak or other condition causing a pressure drop occurs in the system, the pressure-maintaining device detects a change in the pressure differential. This pressure differential refers to the difference in pressure between the valve outlet and inlet. A pressure differential indicates internal leakage in the valve.

[0030] Example 2: As a further improved solution or a parallel solution or an optional independent solution, a four-way valve 6 is also arranged between the one-way valve 5 and the high-precision digital pressure gauge 7. The two four-way valves 6 on the left and right sides of the natural gas PE valve 1 are connected by a high-pressure hose 9, and a pressure transmitter 8 is also installed on each four-way valve 6. The actual technical effect of the technical solution here and its implementation process, that is, the basic function, are as follows: the pressure maintaining device, that is, the pressure transmitter 8, usually contains a sensitive pressure sensor inside, which can detect tiny pressure changes. When it is detected that the pressure difference exceeds the preset safety range, the pressure maintaining device will automatically adjust the valve opening to compensate for the pressure loss and try to restore the pressure balance. This may involve opening the valve to allow more medium to flow into the system, or closing the valve to reduce the outflow of medium. In this way, the pressure maintaining device helps maintain the stability and safety of the pipeline system.

[0031] The design of the pressure maintaining device can be self-powered, that is, it does not require an external power supply to operate, but relies on the energy of the medium itself to drive the movement of the valve. This type of device is generally more reliable because it is not affected by external power failure.

[0032] Example 3: As a further improved solution, a parallel solution, or an optional independent solution, a PE valve internal leakage detection device and a corresponding PE valve are installed in a natural gas maintenance well. The essential technical effect and implementation process of this technical solution, i.e., the basic function, are as follows: The natural gas maintenance well is opened for maintenance.

[0033] Example 4: As a further improved solution, parallel solution, or optional independent solution, high-precision digital pressure gauges 7 are used as IoT self-test alarm devices. The pressure of these high-precision digital pressure gauges 7 can be displayed in the central control room. The substantial technical effect and implementation process of this technical solution, i.e., the basic function, are as follows: remote monitoring is achieved, eliminating manual follow-up.

[0034] Example 5: As a further improved solution, parallel solution, or optional independent solution, an alarm device is installed in the natural gas maintenance well. The alarm device is a natural gas leak alarm. The essential technical effect and implementation process of this technical solution, i.e., the basic function, are as follows: once a leak occurs, an alarm is quickly sounded.

[0035] This device is manufactured to standardize the requirements for leak detection in urban gas pipeline networks, timely detect and judge gas leaks, accurately find and locate leak points, and improve the safe operation level of pipeline networks.

[0036] The device consists of three main components: a pressure-maintaining device, a leak detection device, and a control device. The pressure-maintaining device is responsible for maintaining stable pressure within the gas pipeline to ensure normal gas supply. The leak detection system uses high-precision sensors to monitor pressure changes inside and outside the pipeline in real time, promptly identifying potential leaks. The control system automatically adjusts the operating status of the pressure-maintaining system based on feedback from the leak detection system, enabling rapid location and resolution of leaks.

[0037] Compared to traditional leak detection methods, this device offers significant advantages. First, it utilizes advanced non-contact measurement technology, eliminating the need for frequent manual inspections and significantly improving leak detection accuracy and efficiency. Second, the device can monitor pipeline pressure changes in real time, promptly detecting even minor leaks and preventing them from escalating. Finally, the device also features remote monitoring and alarm capabilities, instantly notifying relevant personnel to address any leaks, ensuring the safe operation of the gas pipeline.

[0038] In short, the emergence of urban gas pipeline pressure-maintaining leak detection and PE valve internal leakage detection devices provides a strong guarantee for urban gas safety. With the continuous advancement of technology and the expansion of its application scope, we believe that this device will play an even more important role in safeguarding urban gas safety in the future.

[0039] Preferably, a PE valve internal leakage detection device typically includes a sensor, a controller, and a display interface. The sensor detects pressure changes inside the valve, and the controller analyzes the pressure changes to determine if there is a leak and provides feedback to the operator via the display interface.

[0040] Practical application cases:

[0041] In practical applications, for example, a smart city gas PE pipe network measurement and control system employs multiple measurement and control nodes throughout the pipe network. Each node collects information about the gas operating pressure, temperature, and flow rate at a specific geographic location and transmits it to a server in the central control room via a wireless LAN. Furthermore, these nodes are equipped with smart PE valves equipped with a power reserve module, an external master control module, and an internal wireless data collection module. This system enables real-time monitoring and safety oversight of the entire pipe network.

[0042] Precautions

[0043] When using any leak detection device, strictly follow the operating procedures to ensure personal and equipment safety. Gas pipeline maintenance and inspection should be performed regularly and by qualified personnel. If a leak is detected, stop using the device immediately and contact a qualified person for repair.

[0044] Innovatively, each of the above effects exists independently, and a set of structures can be used to combine the above results.

[0045] It should be noted that the multiple modules of this patent are an integration of modules in the existing technology and do not involve new modules. Even if some modules use programs, the programs are undoubtedly known programs.

[0046] It should be noted that the multiple solutions provided by this patent include the basic solutions themselves, are independent of each other, and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the claimed invention.

Claims

1. The device for leak detection of urban gas pipeline pressure maintenance and PE valve internal leakage detection is characterized by: The leak detection device comprises relief valve ports arranged on both sides of a natural gas PE valve (1), each relief valve port being connected to a pressure-maintaining leak detection device, a reducer (3) being located above the relief valve port (2), the reducer (3) being connected to a quick connector (4), the quick connector (4) being connected to the pressure-maintaining leak detection device above, the pressure-maintaining leak detection device comprising a one-way valve (5), and a high-precision digital pressure gauge (7) being connected above the one-way valve (5).

2. The device for leak detection of urban gas pipeline pressure maintenance and PE valve internal leakage according to claim 1, characterized in that: A four-way valve (6) is also arranged between the one-way valve (5) and the high-precision digital pressure gauge (7). The two four-way valves (6) on the left and right sides of the natural gas PE valve (1) are connected by a high-pressure hose (9). A pressure transmitter (8) is also installed on each four-way valve (6).

3. The urban gas pipeline pressure-maintaining leak detection and PE valve internal leakage detection device according to claim 1, characterized in that: The PE valve internal leakage detection device and the corresponding PE valve are installed in the natural gas maintenance well.

4. The device for leak detection of urban gas pipeline pressure maintenance and PE valve internal leakage according to claim 1, characterized in that: The high-precision digital pressure gauges (7) are self-test alarm devices for the Internet of Things, and the pressures of these high-precision digital pressure gauges (7) can be displayed in the central control room.

5. The device for leak detection of urban gas pipeline pressure maintenance and PE valve internal leakage as claimed in claim 3, characterized in that: An alarm device is provided in the natural gas maintenance well, and the alarm device is a natural gas leak alarm.

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