CN216769055U

CN216769055U - Intelligent supply device for natural gas micro-pipe network

Info

Publication number: CN216769055U
Application number: CN202220499658.1U
Authority: CN
Inventors: 李祥银; 陈兴达
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-06-17
Anticipated expiration: 2032-03-08

Abstract

The utility model discloses an intelligent natural gas micro-pipe network supply device which comprises a gas phase bus bar, a liquid phase bus bar and a plurality of groups of LNG Dewar flasks, wherein the gas phase bus bar and the liquid phase bus bar are distributed in parallel, the plurality of groups of LNG Dewar flasks are transversely and uniformly distributed, and the plurality of groups of LNG Dewar flasks are communicated with the gas phase bus bar and the liquid phase bus bar; be provided with pressure sensor on the LNG dewar bottle, liquid phase busbar and gaseous busbar intercommunication multiunit LNG dewar bottle department all is provided with pneumatic trip valve. The beneficial effects are that: according to the utility model, the gas-phase busbar and the liquid-phase busbar are arranged, the pressure sensors and the pneumatic cut-off valves are arranged on the two busbars, and the opening and closing of the pneumatic cut-off valves are set through the pressure sensors of the pressure sensors, so that the unattended and automatic switching function is realized, the construction period is short, the operation management is convenient, the operation cost is reduced while the safe operation is ensured, and the construction and operation experience is accumulated for the village and town gas.

Description

Intelligent supply device for natural gas micro-pipe network

Technical Field

The utility model relates to the field of natural gas supply equipment, in particular to an intelligent natural gas supply device with a micro-pipe network.

Background

In order to realize clean and environment-friendly natural gas for rural residents and improve the life quality of the residents, an intelligent natural gas micro-pipe network supply device suitable for novel community gas supply is developed by referring to urban gas design specification GB50028-2006 and related data and experts asking for teaching related specialties, and the conventional LNG Dewar flask has the possibility of causing a safety valve jump accident due to the self-pressurization of a steel cylinder under the conditions of liquid phase supply and small tail end using flow; when the LNG Dewar bottle uses gas phase supply, the steel cylinder can cause insufficient pressure at the low-pressure tail end or gas stop accidents under the condition that the tail end use flow is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide an intelligent natural gas micro-pipe network supply device, which is provided with a gas-phase busbar and a liquid-phase busbar, wherein the two busbars are respectively provided with a pressure sensor and a pneumatic stop valve, and the opening and closing of the pneumatic stop valve are set through the pressure sensing of the pressure sensors, so that the unattended and automatic switching functions are realized, the construction period is short, the operation management is convenient, the operation cost is reduced while the safe operation is ensured, and the construction and operation experience are accumulated for the gas village expert, which is explained in detail below.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an intelligent natural gas supply device for a micro-pipe network, which comprises a gas phase bus bar, a liquid phase bus bar and a plurality of groups of LNG Dewar flasks, wherein the gas phase bus bar and the liquid phase bus bar are distributed in parallel, the plurality of groups of LNG Dewar flasks are transversely and uniformly distributed, and the plurality of groups of LNG Dewar flasks are communicated with the gas phase bus bar and the liquid phase bus bar;

be provided with pressure sensor on the LNG dewar bottle, the liquid phase busbar with gaseous phase busbar intercommunication multiunit LNG dewar bottle department all is provided with pneumatic trip valve, the LNG dewar bottle outside is provided with PLC control system, gaseous phase busbar with the common intercommunication of liquid phase busbar influent stream end has the LNG tank wagon, LNG dewar bottle export pipeline outside intercommunication has the air temperature gasification subassembly, and this air temperature gasification subassembly opposite side is established ties in proper order has the pressure regulating valves and adds the smelly subassembly.

By adopting the intelligent natural gas micro-pipe network supply device, the opening and closing of the pneumatic cut-off valve are set through the pressure sensing of the pressure sensor, the pressure of the safety valve of the LNG Dewar bottle is set to be 1.76MPa, in order to ensure the safe operation of facility equipment, the pressure of the LNG Dewar bottle is set to be 0.8MPa at the upper limit and 0.4MPa at the lower limit by utilizing the PLC intelligent control system, namely when the LNG Dewar bottle is higher than 0.8MPa, the system automatically controls the closing of the liquid-phase busbar through the pneumatic cut-off valve, converts the liquid-phase busbar into the gas-phase busbar to supply the gaseous natural gas, and informs operators through the mobile phone APP; when the pressure of the LNG Dewar flask is lower than 0.4MPa, the system automatically converts the LNG Dewar flask into a liquid phase bus bar to supply the liquefied natural gas, and informs operators through a mobile phone APP. The PLC control system is provided with a mobile phone remote viewing operation control platform and a computer remote viewing operation control platform, so that operation data, pressure before pressure regulation, pressure after pressure regulation, flow and operation temperature are uploaded in real time.

Preferably, the LNG dewar is provided with a safety valve, and the safety valve sets a pressure of 1.76 MPa.

Preferably, the PLC control system sets the upper limit and the lower limit of the pressure sensor to be 0.8MPa and 0.4MPa, and the pneumatic stop valve and the pressure sensor are both electrically connected with the PLC control system.

Preferably, the PLC control system is internally provided with a wireless transceiver module, the gas phase bus bar, the liquid phase bus bar and the bottom sides of the multiple groups of LNG Dewar flasks are connected with a square chassis together, and the air temperature gasification assembly and the pressure regulating valve group are integrally fixed on the top side of the square chassis.

Preferably, the air temperature gasification assembly comprises two groups of gasification pipelines distributed in parallel, the gasification pipelines comprise gasifiers and flow meters installed in series, the pressure regulating valve group comprises two groups of pressure regulating pipelines distributed in parallel, and the pressure regulating pipelines comprise pressure regulators and ball valves installed in series.

Preferably, pressure gauges and safety valves are arranged on inlet and outlet pipelines of the pressure regulating valve group, and interface flanges communicated with the LNG tank car are reserved at the outer end parts of the gas phase bus bar and the liquid phase bus bar.

Has the advantages that: according to the utility model, the gas-phase busbar and the liquid-phase busbar are arranged, the pressure sensors and the pneumatic cut-off valves are arranged on the two busbars, and the opening and closing of the pneumatic cut-off valves are set through the pressure sensors of the pressure sensors, so that the unattended and automatic switching function is realized, the construction period is short, the operation management is convenient, the operation cost is reduced while the safe operation is ensured, and the construction and operation experience is accumulated for the village and town gas.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a process flow diagram of the present invention.

The reference numerals are explained below:

1. LNG tank cars; 2. a gas phase bus; 3. a liquid phase bus; 4. an LNG Dewar; 5. an air temperature gasification component; 6. a pressure regulating valve bank; 7. and an odorizing component.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Referring to fig. 1, the utility model provides an intelligent supply device for a natural gas micro-pipe network, which comprises a gas phase bus bar 2, a liquid phase bus bar 3 and a plurality of groups of LNG dewar bottles 4, wherein the gas phase bus bar 2 and the liquid phase bus bar 3 are distributed in parallel, the plurality of groups of LNG dewar bottles 4 are transversely and uniformly distributed, and the plurality of groups of LNG dewar bottles 4 are communicated with the gas phase bus bar 2 and the liquid phase bus bar 3;

be provided with pressure sensor on LNG dewar bottle 4, liquid phase busbar 3 and 2 intercommunication multiunit LNG dewar bottle 4 departments of gaseous busbar all are provided with pneumatic trip valve, pneumatic trip valve is used for controlling the on-off state of liquid phase busbar 3 and gaseous busbar 2, the LNG dewar bottle 4 outside is provided with PLC control system, gaseous busbar 2 communicates with 3 influent stream ends of liquid phase busbar jointly and has LNG tank wagon 1, 4 export pipeline outside intercommunications of LNG dewar bottle have warm gasification subassembly 5, this 5 opposite sides of warm gasification subassembly establish ties in proper order and have pressure regulating valves 6 and odorize subassembly 7.

As an optional implementation mode, a safety valve is arranged on the LNG dewar 4, the pressure set by the safety valve is 1.76MPa, the upper limit and the lower limit of a pressure sensor set by a PLC control system are respectively 0.8MPa and 0.4MPa, and the pneumatic cut-off valve and the pressure sensor are both electrically connected with the PLC control system;

the PLC control system is internally provided with a wireless transceiving module, the gas phase bus bar 2, the liquid phase bus bar 3 and a plurality of groups of LNG Dewar flasks 4 are connected with a square chassis at the bottom side together, the air temperature gasification component 5 and the pressure regulating valve group 6 are integrally fixed at the top side of the square chassis, the air temperature gasification component 5 comprises two groups of gasification pipelines which are distributed in parallel, each gasification pipeline comprises a gasifier and a flowmeter which are arranged in series, the pressure regulating valve group 6 comprises two groups of pressure regulating pipelines which are arranged in parallel, each pressure regulating pipeline comprises a pressure regulator and a ball valve which are arranged in series, each pressure gauge and a safety valve are arranged on an inlet and outlet pipeline of the pressure regulating valve group 6, the air temperature gasification component 5 and the pressure regulating valve group 6 are respectively provided with two groups of channels which are distributed in parallel, so that normal gas supply can be ensured in the equipment maintenance process by the two channels (one is opened for normal use, and the other is closed for standby use for maintenance and repair), interface flanges communicated with the LNG tank car 1 are reserved at the outer end parts of the gas-phase bus bar 2 and the liquid-phase bus bar 3.

By adopting the structure, the opening and closing of the pneumatic cut-off valve are set through the pressure sensing of the pressure sensor, the pressure of the safety valve of the LNG Dewar bottle 4 is set to be 1.76MPa, in order to ensure the safe operation of facility equipment, the pressure of the LNG Dewar bottle 4 is set to be 0.8MPa at the upper limit and 0.4MPa at the lower limit by utilizing the PLC intelligent control system, namely when the LNG Dewar bottle 4 is higher than 0.8MPa, the system automatically controls the liquid phase busbar 3 to be closed through the pneumatic cut-off valve, converts the liquid phase busbar 3 into the gas phase busbar 2 to supply the gaseous natural gas, and informs operators through the mobile phone APP; when the pressure of the LNG Dewar flask 4 is lower than 0.4MPa, the system automatically converts the LNG Dewar flask into the liquid phase bus bar 3 to supply the liquefied natural gas and informs operators through the mobile phone APP. The PLC control system is provided with a mobile phone remote viewing operation control platform and a computer remote viewing operation control platform, so that operation data, pressure before pressure regulation, pressure after pressure regulation, flow and operation temperature are uploaded to a mobile phone APP in real time;

through setting up gas phase busbar 2 and liquid phase busbar 3, all set up pressure sensor and pneumatic trip valve on two busbars, set for opening and closing of pneumatic trip valve through pressure sensor's pressure sensing, realize unmanned on duty and gas-liquid automatic switch-over function, the construction cycle is short, and the operation management is convenient, has also reduced the running cost when guaranteeing safe operation, for gas village leads to accumulation construction and operation experience.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. Natural gas microtube net intelligence feeding mechanism, its characterized in that: the LNG Dewar flask comprises a gas phase bus bar (2), a liquid phase bus bar (3) and a plurality of groups of LNG Dewar flasks (4), wherein the gas phase bus bar (2) and the liquid phase bus bar (3) are distributed in parallel, the plurality of groups of LNG Dewar flasks (4) are transversely and uniformly distributed, and the plurality of groups of LNG Dewar flasks (4) are communicated with the gas phase bus bar (2) and the liquid phase bus bar (3);

be provided with pressure sensor on LNG dewar bottle (4), liquid phase busbar (3) with gaseous phase busbar (2) intercommunication multiunit LNG dewar bottle (4) department all is provided with pneumatic trip valve, the LNG dewar bottle (4) outside is provided with PLC control system, gaseous phase busbar (2) with liquid phase busbar (3) common intercommunication of influent stream end has LNG tank wagon (1), LNG dewar bottle (4) export pipeline outside intercommunication has air temperature gasification subassembly (5), and this air temperature gasification subassembly (5) opposite side is established ties in proper order has pressure regulating valves (6) and adds smelly subassembly (7).

2. The intelligent supply device of natural gas micro-pipe network according to claim 1, characterized in that: the LNG Dewar flask (4) is provided with a safety valve, and the pressure of the safety valve is set to be 1.76 MPa.

3. The intelligent supply device of natural gas micro-pipe network according to claim 2, characterized in that: the PLC control system sets the high limit of the pressure sensor to be 0.8MPa and the low limit to be 0.4MPa, and the pneumatic stop valve and the pressure sensor are electrically connected with the PLC control system.

4. The intelligent supply device of natural gas micro-pipe network according to claim 1, characterized in that: the PLC control system is internally provided with a wireless transceiving module, the gas phase bus bar (2), the liquid phase bus bar (3) and the bottom sides of the multiple groups of LNG Dewar flasks (4) are jointly connected with a square chassis, and the air temperature gasification assembly (5) and the pressure regulating valve group (6) are integrally fixed on the top side of the square chassis.

5. The intelligent supply device of natural gas micro-pipe network according to claim 4, characterized in that: air temperature gasification subassembly (5) are including two sets of parallelly connected distribution gasification pipelines, and this gasification pipeline is including vaporizer and the flowmeter of establishing ties the installation, pressure regulating valves group (6) are including the pressure regulating pipeline of two sets of parallelly connected distributions, and this pressure regulating pipeline is including the pressure regulator and the ball valve of establishing ties the installation.

6. The intelligent supply device of natural gas micro-pipe network according to claim 5, characterized in that: pressure gauges and safety valves are arranged on inlet and outlet pipelines of the pressure regulating valve group (6), and interface flanges communicated with the LNG tank wagon (1) are reserved at the outer end parts of the gas phase busbar (2) and the liquid phase busbar (3).