Natural gas conveying system with flexible allocation metering system

Abstract

The utility model discloses a natural gas conveying system with a flexible allocation metering system. The natural gas conveying system comprises a gas supply unit, a user use unit and an allocation assembly. The multiple gas supply units converge into a busbar, the busbar communicates with a plurality of user use units, and the busbar supplies gas to the user use units communicating with the busbar through gas supply pipelines; the allocation assembly is arranged among the multiple user use units, and communication between any two user use units can be achieved through the allocation assembly, so that the natural gas amount between the two correspondingly communicated user use units is adjusted; according to the scheme, communication of any two user use units can be achieved through the allocation assembly, natural gas of the idle user use units which are correspondingly communicated is allocated to a user with a fault in the metering system, the problem that gas supply for a certain user is in shortage in life is solved to a certain extent, and meanwhile the metering result is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas supply, and particularly relates to a natural gas transportation system with a flexible deployment metering system. Background Art

[0002] Natural gas is an essential resource in people's lives, and the natural gas transmission and distribution system is the most basic operating facility for natural gas. There are two basic ways for the existing natural gas transmission and distribution system: one is the pipeline transmission and distribution system; the other is the liquefied petroleum gas cylinder filling system. The pipeline transmission and distribution system generally consists of a receiving station or a gate station, gas storage facilities, pressure regulating devices, transmission pipelines, metering devices, management facilities, and monitoring systems, etc. The receiving station or the gate station is responsible for receiving the natural gas input from the gas source plant and other sources for use in the town, conducting metering and quality inspection, controlling and regulating the flow rate and pressure of the natural gas supplied to the town according to the transmission and distribution requirements of the town's gas supply, and purifying the natural gas when necessary; finally, the natural gas is transported to each gas storage point, pressure regulating chamber, and natural gas user through the transmission and distribution pipeline network, and the gas transmission along the way is ensured to be safe and reliable. Among them, for each natural gas user, there is an independent metering system for metering its natural gas consumption for easy settlement.

[0003] The existing natural gas transmission and distribution system often has the following problems during use:

[0004] 1. If the metering system of a certain natural gas user fails, it is necessary to cut off the gas supply to this natural gas user, and then repair the metering system, which will result in the phenomenon of no gas supply for a period of time, affecting its normal life;

[0005] 2. Different transmission pipelines are used to supply natural gas to different natural gas users respectively. However, different users have different demands for natural gas, which will result in the situation that users with large demands cannot be satisfied, leading to gas supply shortages; while some users do not need natural gas temporarily, and their transmission pipelines are in an idle state. Therefore, the problem that different users' different demands for natural gas cannot be met cannot be solved.

[0006] Therefore, how to provide a natural gas transportation system with a flexible deployment metering system to optimize the deployment of the natural gas transportation process and achieve the best transportation effect is a technical problem faced by the current field. Content of the Utility Model

[0007] The purpose of the utility model is to provide a natural gas transportation system with a flexible deployment metering system for the above-mentioned deficiencies, which solves the problem that when the metering system fails in the prior art, repairing the metering system affects its normal gas supply, and at the same time solves the problem that the prior art cannot meet the different demands of different users for natural gas.

[0008] The present utility model is realized through the following solutions:

[0009] A natural gas transportation system with a flexible deployment metering system, comprising a gas supply unit, a user usage unit, and a deployment component; a plurality of the gas supply units converge into a manifold, and a number of user usage units are connected to the manifold. The manifold supplies gas to the user usage units connected thereto through a gas supply pipeline; the deployment component is arranged between a plurality of the user usage units, and the connection between any two user usage units can be realized through the deployment component, so as to adjust the amount of natural gas between the two corresponding connected user usage units.

[0010] Based on the structure of the above-mentioned natural gas transportation system with a flexible deployment metering system, the gas supply unit comprises a first pipeline, a filter separator, and a second pipeline connected in sequence; a valve one for controlling the opening and closing of the first pipeline is arranged on the first pipeline, and a valve two for controlling the opening and closing of the second pipeline is arranged on the second pipeline; the input end of the first pipeline is connected to an upstream gas source, and the output end of the second pipeline is connected to the manifold.

[0011] Based on the structure of the above-mentioned natural gas transportation system with a flexible deployment metering system, a bypass pressure equalizing valve is arranged between the first pipelines of adjacent gas supply units for balancing the pressure on both sides; a pressure gauge one and a blowdown pipe are further arranged on the filter separator.

[0012] Based on the structure of the above-mentioned natural gas transportation system with a flexible deployment metering system, a blowdown pipe and a blowdown tank are further connected outside the filter separator, and the blowdown pipe is connected to the filter separator and the blowdown tank.

[0013] Based on the structure of the above-mentioned natural gas transportation system with a flexible deployment metering system, a number of the user usage units are respectively connected to the manifold through a gas supply pipeline; a valve three, a flowmeter, a thermometer, a valve four, and a pressure gauge two are arranged in sequence on the gas supply pipeline.

[0014] Based on the structure of the above-mentioned natural gas transportation system with a flexible deployment metering system, the user usage unit comprises a first user usage unit, a second user usage unit, a third user usage unit, and a standby unit, and the structure of the standby unit is the same as that of the first user usage unit, the second user usage unit, and the third user usage unit; the deployment component can realize the two-way conduction between the first user usage unit, the second user usage unit, the third user usage unit, and the standby unit.

[0015] Based on the structure of the above natural gas transmission system with a flexible deployment metering system, the deployment component includes a housing, a commutation device disposed inside the housing, and a first port, a second port, a third port, and a fourth port provided on the housing and connected to the commutation device; the first port is connected to the pipeline between the flowmeter and the thermometer on the first user unit; the second port is connected to the pipeline between the flowmeter and the thermometer on the second user unit; the third port is connected to the pipeline between the flowmeter and the thermometer on the third user unit; the fourth port is connected to the pipeline between the flowmeter and the thermometer on the fourth user unit.

[0016] Based on the structure of the above natural gas transmission system with a flexible deployment metering system, the commutation device includes a first adjustment pipeline, a second adjustment pipeline, a third adjustment pipeline, a fourth adjustment pipeline, a fifth adjustment pipeline, and a sixth adjustment pipeline; valve bodies are provided on each of the first adjustment pipeline, the second adjustment pipeline, the third adjustment pipeline, the fourth adjustment pipeline, the fifth adjustment pipeline, and the sixth adjustment pipeline, which are respectively: valve five, valve six, valve seven, valve eight, valve nine, and valve ten.

[0017] Based on the structure of the above natural gas transmission system with a flexible deployment metering system, the two ends of the first adjustment pipeline are respectively communicated with the first port and the second port; the two ends of the second adjustment pipeline are respectively communicated with the second port and the fourth port; the two ends of the third adjustment pipeline are respectively communicated with the fourth port and the third port; the two ends of the fourth adjustment pipeline are respectively communicated with the third port and the first port; the two ends of the fifth adjustment pipeline are respectively communicated with the second port and the third port; the two ends of the sixth adjustment pipeline are respectively communicated with the first port and the fourth port.

[0018] Based on the structure of the above natural gas transmission system with a flexible deployment metering system, a door body is further opened on the housing, and a locking device is fitted on the door body.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are:

[0020] 1. This solution can realize the connection between any two user units by using the deployment component, and transfer the natural gas of the corresponding connected idle user unit to the user with a malfunctioning metering system, which solves to a certain extent the problem of gas shortage for a certain user that often occurs in life, and at the same time does not affect the metering result.

[0021] 2. In this solution, the deployment component can also transfer the natural gas of the corresponding connected idle users to the users with large demand, realizing the deployment of natural gas and solving the problem of different usage demands of natural gas for different user units. Description of the Drawings

[0022] Figure 1 This is a schematic structural diagram of the whole utility model;

[0023] Figure 2 This is a schematic structural diagram of the dispensing component in the utility model;

[0024] Description of the drawings: 1. First pipeline; 2. Filter separator; 3. Second pipeline; 4. Valve 1; 5. Valve 2; 6. Manifold; 7. Bypass pressure equalizing valve; 8. Pressure gauge 1; 9. Vent pipe; 10. Valve 3; 11. Flowmeter; 12. Thermometer; 13. Valve 4; 14. Pressure gauge 2; 15. First port; 16. Second port; 17. Third port; 18. Fourth port; 19. Valve 5; 20. Valve 6; 21. Valve 7; 22. Valve 8; 23. Valve 9; 24. Valve 10; 25. Upstream gas source; 26. Sewage pool; 27. Sewage pipe; 28. First user usage unit; 29. Second user usage unit; 30. Third user usage unit; 31. Spare unit; 32. Dispensing component. Detailed implementation manners

[0025] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0026] Any feature disclosed in this specification (including any additional claims, abstract) can be replaced by other equivalent or similar-purpose alternative features unless specifically stated. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0029] Embodiment 1

[0030] As Figures 1 to 2 shown, the present utility model provides a technical solution:

[0031] A natural gas transmission system with a flexible deployment metering system, which at least includes but is not limited to a gas supply unit, a user usage unit, and a deployment component 32; a plurality of gas supply units converge into a manifold 6, and several user usage units are connected to the manifold 6. The manifold 6 supplies gas to the user usage units connected thereto through a gas supply pipeline; the deployment component 32 is arranged between a plurality of user usage units, and the connection between any two user usage units can be achieved through the deployment component 32, so as to adjust the amount of natural gas between the two connected user usage units.

[0032] Based on the above structure, the specially designed deployment component 32 in this solution can supply gas from the pipelines where other user units are located through the deployment component 32 when the gas supply pipeline of any user usage unit fails, ensuring the normal supply of natural gas to users; it provides a good foundation for maintenance and fault repair.

[0033] As an example, the gas supply unit includes a first pipeline 1, a filter separator 2, and a second pipeline 3 connected in sequence; a valve one 4 for controlling the opening and closing of the first pipeline 1 is provided on the first pipeline 1, and a valve two 5 for controlling the opening and closing of the second pipeline 3 is provided on the second pipeline 3; the input end of the first pipeline 1 is connected to an upstream gas source 25, and the output end of the second pipeline 3 is connected to the manifold 6.

[0034] Among them, a bypass pressure equalizing valve 7 is provided between the first pipelines 1 of adjacent gas supply units for balancing the pressure on both sides; a pressure gauge one 8 and a vent pipe 9 are also provided on the filter separator 2 for monitoring the pressure situation in the filter separator 2 and discharging the pressure exceeding the upper limit in a timely manner to ensure the safe and stable operation of the transmission and distribution system;

[0035] A drain pipe 27 and a drain pit 26 are also connected outside the filter separator 2, and the drain pipe 27 connects the filter separator 2 and the drain pit 26;

[0036] Based on the above structure, during operation, the valve one 4 and the valve two 5 are opened, and the gas from the upstream gas source 25 flows into the filter separator 2 through the first pipeline 1 for cleaning, and finally flows into the manifold 6 through the second pipeline 3; the impurities after cleaning in the filter separator 2 flow into the drain pit 26 through a pipeline.

[0037] As an example, several user usage units are respectively connected to the manifold 6 through a gas supply pipeline; a valve three 10, a flow meter 11, a thermometer 12, a valve four 13, and a pressure gauge two 14 are arranged in sequence on the gas supply pipeline.

[0038] Based on the above structure, when operating normally, valve three 10 and valve four 13 are opened, and the natural gas in the bus bar 6 flows into the corresponding user usage unit through the gas supply pipeline connecting the user usage unit. The flow meter 11 is used to count the amount of natural gas flowing into the user usage unit, the thermometer 12 is used to monitor the temperature of the natural gas in the gas supply pipeline, and the pressure gauge two 14 is used to monitor the pressure condition of the natural gas in the gas supply pipeline.

[0039] As an example, the user usage unit includes a first user usage unit 28, a second user usage unit 29, a third user usage unit 30, and a standby unit 31. The structure of the standby unit 31 is the same as that of the first user usage unit 28, the second user usage unit 29, and the third user usage unit 30; the deployment component 32 can achieve two-way conduction between the first user usage unit 28, the second user usage unit 29, the third user usage unit 30, and the standby unit 31.

[0040] As an example, the deployment component 32 includes a housing, a commutation device provided in the housing, and a first port 15, a second port 16, a third port 17, and a fourth port 18 provided on the housing and connected to the commutation device; the pipeline between the first port 15 and the flow meter 11 and the thermometer 12 on the first user usage unit 28 is connected; the pipeline between the second port 16 and the flow meter 11 and the thermometer 12 on the second user usage unit 29 is connected; the pipeline between the third port 17 and the flow meter 11 and the thermometer 12 on the third user usage unit 30 is connected; the pipeline between the fourth port 18 and the flow meter 11 and the thermometer 12 on the fourth user usage unit is connected.

[0041] As an example, the commutation device includes a first adjustment pipeline, a second adjustment pipeline, a third adjustment pipeline, a fourth adjustment pipeline, a fifth adjustment pipeline, and a sixth adjustment pipeline; valves are provided on the first adjustment pipeline, the second adjustment pipeline, the third adjustment pipeline, the fourth adjustment pipeline, the fifth adjustment pipeline, and the sixth adjustment pipeline, which are respectively: valve five 19, valve six 20, valve seven 21, valve eight 22, valve nine 23, valve ten 24.

[0042] Both ends of the first adjustment pipeline are respectively communicated with the first port 15 and the second port 16; both ends of the second adjustment pipeline are respectively communicated with the second port 16 and the fourth port 18; both ends of the third adjustment pipeline are respectively communicated with the fourth port 18 and the third port 17; both ends of the fourth adjustment pipeline are respectively communicated with the third port 17 and the first port 15; both ends of the fifth adjustment pipeline are respectively communicated with the second port 16 and the third port 17; both ends of the sixth adjustment pipeline are respectively communicated with the first port 15 and the fourth port 18.

[0043] As an example, a door body (not shown) is also provided on the housing, and a locking device (not shown) is fitted on the door body. The locking device is used to lock the door body to prevent the commutation device in the housing from being damaged by humans.

[0044] In this solution, the first user usage unit 28, the second user usage unit 29, the third user usage unit 30, and the standby unit 31 need to follow a certain connection logic for deployment. There are many logical connections and disconnections required for deployment among the three user usage units and the standby unit 31, which is prone to errors for on-site installation personnel. Therefore, the commutation device that enables the deployment component 32 to play its true role is arranged inside the housing, and the commutation device is also protected. Four ports are set on the housing, and externally, it is only necessary to connect the first user usage unit 28, the second user usage unit 29, the third user usage unit 30, the standby unit 31, and these four ports, making the installation simple. Then, before leaving the factory, the deployment component 32 connects the commutation device and the four ports internally. The commutation device controls the connection and disconnection relationship among the four ports, thereby realizing the control of the flow direction of the natural gas output from the bus bar 6 among the first user usage unit 28, the second user usage unit 29, the third user usage unit 30, and the standby unit 31.

[0045] Specific working process:

[0046] Open valve one 4, valve two 5, valve three 10, and valve four 13. The valve bodies (valve five 19, valve six 20, valve seven 21, valve eight 22, valve nine 23, valve ten 24) on the first regulating pipeline, the second regulating pipeline, the third regulating pipeline, the fourth regulating pipeline, the fifth regulating pipeline, and the sixth regulating pipeline are all in the closed state. The gas from the upstream gas source 25 flows into the filter separator 2 through the first pipeline 1 for cleaning, and finally flows into the bus bar 6 through the second pipeline 3. The impurities after cleaning in the filter separator 2 flow into the sewage pool 26 through the pipeline; finally, the natural gas in the bus bar 6 is transported to the user usage unit through the supply pipeline, and the flowmeter 11 on the user usage unit independently measures the amount of natural gas used by the user usage unit, and the user usage units are independent of each other.

[0047] Connection among the first user usage unit 28, the second user usage unit 29, the third user usage unit 30, and the standby unit 31:

[0048] When valve ten 24 controls the connection between the first port 15 and the fourth port 18, the first user usage unit 28 and the standby unit 31 can be connected. When a fault occurs in the flow system on the supply pipeline of the first user usage unit 28, the natural gas of the standby unit 31 can be transported to the first user usage unit 28;

[0049] When valve six 20 controls the connection between the second port 16 and the fourth port 18, the second user usage unit 29 and the standby unit 31 can be connected. When a fault occurs in the flow system on the supply pipeline of the second user usage unit 29, the natural gas of the standby unit 31 can be transported to the second user usage unit 29;

[0050] When the valve 7 21 controls the fourth port 18 and the third port 17 to be connected, the third user unit 30 and the backup unit 31 can be connected. When the flow system on the gas supply pipeline of the third user unit 30 fails, the natural gas of the backup unit 31 can be delivered to the third user unit 30;

[0051] When the backup unit 31 is occupied, for example, the backup unit 31 is occupied by the first user unit 28, if the flow system on the gas supply pipeline of the second user unit 29 fails and the third user unit 30 is just in an idle state, the second port 16 and the third port 17 can be connected by controlling the valve nine 23 to achieve the connection between the second user unit 29 and the third user unit 30, and the natural gas of the third user unit 30 can be delivered to the second user unit 29.

[0052] The reversing device can realize the connection between the first user unit 28, the second user unit 29, the third user unit 30 and the backup unit 31. At the same time, the amount of natural gas input from the backup unit 31 to the user unit can also be obtained through the flow meter 11 on the backup unit 31, which can ensure the normal life of the user and also realize the accurate measurement and statistics of the amount of natural gas. When a user unit has a large demand for natural gas, the natural gas of the idle user unit or the backup unit 31 can also be delivered to the user unit through the deployment component 32.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A natural gas transmission system with a flexible metering system, characterized in that: It includes a gas supply unit, a user unit and a mixing component; a plurality of the gas supply units converge into a bus, a plurality of user units are connected to the bus, and the bus supplies gas to the user units connected thereto through a gas supply pipeline; the mixing component is arranged between the plurality of user units, and the mixing component can realize the connection between any two user units, thereby being used to adjust the amount of natural gas between the two correspondingly connected user units.

2. A natural gas transmission system with a flexible metering system as claimed in claim 1, characterized in that: The air supply unit includes a first pipeline, a filter separator and a second pipeline which are connected in sequence; the first pipeline is provided with a valve 1 for controlling the opening and closing of the first pipeline, and the second pipeline is provided with a valve 2 for controlling the opening and closing of the second pipeline; the input end of the first pipeline is connected to an upstream gas source, and the output end of the second pipeline is connected to a bus.

3. A natural gas transmission system with a flexible metering system as claimed in claim 2, characterized in that: A bypass pressure equalizing valve is provided between the first pipelines of adjacent air supply units to balance the pressure on both sides; a pressure gauge and a vent pipe are also provided on the filter separator.

4. A natural gas transmission system with a flexible metering system as claimed in claim 3, characterized in that: The filter separator is also connected to a sewage pipe and a sewage tank, and the sewage pipe filter separator is connected to the sewage tank.

5. A natural gas transmission system with a flexible metering system as claimed in claim 4, characterized in that: Several of the user units are connected to each other through a gas supply pipeline and a bus bar; a valve three, a flow meter, a thermometer, a valve four and a pressure gauge two are arranged on the gas supply pipeline in sequence.

6. A natural gas transmission system with a flexible metering system as claimed in claim 5, characterized in that: The user usage unit includes a first user usage unit, a second user usage unit, a third user usage unit and a backup unit. The structure of the backup unit is the same as that of the first user usage unit, the second user usage unit and the third user usage unit. The deployment component can achieve two-way conduction between the first user usage unit, the second user usage unit, the third user usage unit and the backup unit.

7. A natural gas transmission system with a flexible metering system as claimed in claim 6, characterized in that: The mixing component includes a shell, a reversing device arranged in the shell, and a first port, a second port, a third port and a fourth port arranged on the shell and connected to the reversing device; a pipeline connection between the first port and a flow meter and a thermometer on a first user unit; a pipeline connection between the second port and the flow meter and the thermometer on a second user unit; a pipeline connection between the third port and the flow meter and the thermometer on the third user unit; and a pipeline connection between the fourth port and the flow meter and the thermometer on a fourth user unit.

8. A natural gas transmission system with a flexible metering system as claimed in claim 7, characterized in that: The reversing device includes a first regulating pipeline, a second regulating pipeline, a third regulating pipeline, a fourth regulating pipeline, a fifth regulating pipeline and a sixth regulating pipeline; the first regulating pipeline, the second regulating pipeline, the third regulating pipeline, the fourth regulating pipeline, the fifth regulating pipeline and the sixth regulating pipeline are all provided with valve bodies, which are: valve five, valve six, valve seven, valve eight, valve nine and valve ten respectively.

9. A natural gas transmission system with a flexible metering system as claimed in claim 8, characterized in that: The two ends of the first regulating pipeline are respectively connected to the first port and the second port; the two ends of the second regulating pipeline are respectively connected to the second port and the fourth port; the two ends of the third regulating pipeline are respectively connected to the fourth port and the third port; the two ends of the fourth regulating pipeline are respectively connected to the third port and the first port; the two ends of the fifth regulating pipeline are respectively connected to the second port and the third port; the two ends of the sixth regulating pipeline are respectively connected to the first port and the fourth port.

10. A natural gas transmission system with a flexible metering system as claimed in claim 9, characterized in that: The shell is also provided with a door body, and the door body is matched with a locking device.

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