A natural gas gathering station
Patent Information
- Application Number
- CN202522159626.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-13
AI Technical Summary
[0005]为了弥补以上不足，本实用新型提供了一种天然气集输站，旨在改善现有技术中天然气集输站保温效果差，在低温环境会使站内管道、设备保温层性能衰减，导致管内天然气温度骤降，会析出液态水甚至形成冰堵的问题
1、本实用新型中，通过天然气入气通道将天然气送入天然气加热箱，全包围式水换热机构中，包围式换热箱贴合加热箱外壁形成环绕结构，水流经升温箱时被加热组件加热，升温后的水体在包围式换热箱内流动，全包围式水换热机构较普通换热机构，换热面积更大且覆盖更全面，能让天然气受热更均匀，避免局部过冷或过热，能减少天然气泄漏风险，保护站场安全。
Smart Images
Figure CN224836990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of natural gas gathering and transmission technology, and in particular to a natural gas gathering and transmission station. Background Technology
[0002] Natural gas gathering and transmission stations are key hubs in the natural gas production chain, connecting gas wells with downstream transmission pipelines. Their core functions are to collect, process, and transport natural gas produced from gas wells. They gather natural gas containing impurities from multiple gas wells, remove water, sand, and condensate oil through separation equipment, measure natural gas production, regulate pressure, and finally transport compliant natural gas to long-distance pipelines or subsequent users. They are important infrastructure for ensuring a clean, safe, and stable supply of natural gas.
[0003] Natural gas gathering and transmission stations can centrally collect natural gas produced from scattered gas wells, avoiding the waste of resources from single-well transportation and significantly improving the collection efficiency of natural gas after extraction. At the same time, through professional processes, impurities and harmful components in natural gas are precisely removed. In addition, the station is equipped with precise metering devices and pressure regulation systems, which can stably control the amount and pressure of gas transmitted, providing a continuous and stable gas source for long-distance pipelines and subsequent users.
[0004] However, the poor insulation of natural gas gathering and transmission stations can cause the insulation layer of pipelines and equipment to degrade in low-temperature environments, leading to a sudden drop in the temperature of the natural gas inside the pipes. This can cause liquid water to precipitate or even form ice blockage, blocking the gas transmission channels and directly interrupting the gas supply. At the same time, low temperatures reduce the elasticity of equipment seals, increasing the risk of natural gas leaks and threatening the safety of the station. This necessitates increased inspection frequency and maintenance costs, affecting gathering and transmission efficiency and significantly increasing operating costs, posing a challenge to the stable supply of natural gas in cold regions. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a natural gas gathering and transmission station, which aims to improve the poor insulation effect of existing natural gas gathering and transmission stations. In low-temperature environments, the insulation layer of the pipelines and equipment in the station will degrade, causing the temperature of the natural gas in the pipes to drop sharply, which may lead to the precipitation of liquid water or even the formation of ice blockage.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a natural gas gathering and transmission station, including a natural gas heating box, a natural gas inlet channel is provided on the right side of the natural gas heating box, a fully enclosed water heat exchange mechanism is provided on the rear side of the natural gas heating box, the fully enclosed water heat exchange mechanism is used to heat the natural gas, and a multi-stage pressure regulating and conveying mechanism is provided on the right side of the natural gas inlet channel, the multi-stage pressure regulating and conveying mechanism is used to convey natural gas at different pressures; The fully enclosed water heat exchange mechanism includes an enclosed heat exchange box. The inner wall of the enclosed heat exchange box is fixedly connected to the outer wall of the natural gas heating box. Water pipes are connected to both the left and right ends of the rear side of the enclosed heat exchange box. A water exchange pump is installed on the outer wall of the left water pipe. The two adjacent water pipes are connected to the same heating box. A heating component is installed on the top of the heating box.
[0007] As a further description of the above technical solution: The multi-stage pressure regulating and conveying mechanism includes a high-pressure pipe, the left side of which is connected to the right side of the natural gas inlet channel, the front side of which is connected to a medium-pressure pipe, the front side of which is connected to a low-pressure pipe, a connecting valve on the top left side of the high-pressure pipe and the top front side of the medium-pressure pipe, a high-pressure channel assembly on the outer wall of the high-pressure pipe, a medium-pressure channel assembly on the outer wall of the medium-pressure pipe, a low-pressure channel assembly on the outer wall of the low-pressure pipe, a filter assembly on the right end of the high-pressure pipe, and a cross-stage pressure reducing pipe connecting the bottom of the high-pressure pipe and the bottom of the low-pressure pipe.
[0008] As a further description of the above technical solution: The heating assembly includes a flange, the bottom of which is fixedly connected to the top of the heating chamber, a temperature control chamber is fixedly connected to the top of the flange, and a heating tube is fixedly connected to the bottom of the flange.
[0009] As a further description of the above technical solution: The high-pressure channel assembly includes a high-pressure delivery valve, the bottom of which is connected to the top of the natural gas inlet channel. A pressure gauge is installed on the top left side of the high-pressure pipe, and a thermometer is installed on the right side of the high-pressure pipe.
[0010] As a further description of the above technical solution: The medium-pressure channel assembly includes a high-pressure regulator, the interior of which is connected to the interior of the medium-pressure pipe. Two pressure gauges are installed at the top of the medium-pressure pipe, and a vent valve is connected to the left side of the outer wall of each pressure gauge.
[0011] As a further description of the above technical solution: The low-pressure channel assembly includes a medium-low pressure reducer, the interior of which is connected to the interior of the low-pressure pipe, and a meter is connected to the right side of the medium-low pressure reducer, with a natural gas outlet connected to the right side of the meter.
[0012] As a further description of the above technical solution: The filter assembly includes a filter chamber, the left side of which is connected to the right side of the high-pressure pipe. A filter element is installed inside the filter chamber, and a filter outlet is connected to the bottom of the filter element.
[0013] As a further description of the above technical solution: The input pressure of the high-medium pressure regulator is 0.4-1.6 MPa, and the output pressure of the high-medium pressure regulator is 0.01-0.4 MPa. Preferably, the output pressure of the high-medium pressure regulator is set to 0.2 MPa.
[0014] This utility model has the following beneficial effects: 1. In this utility model, natural gas is sent into the natural gas heating box through the natural gas inlet channel. In the fully enclosed water heat exchange mechanism, the enclosed heat exchange box is attached to the outer wall of the heating box to form a surrounding structure. When the water flows through the heating box, it is heated by the heating components. The heated water flows in the enclosed heat exchange box. Compared with ordinary heat exchange mechanisms, the fully enclosed water heat exchange mechanism has a larger heat exchange area and more comprehensive coverage, which can make the natural gas heat more evenly, avoid local overcooling or overheating, reduce the risk of natural gas leakage, and protect the safety of the station.
[0015] 2. In this utility model, natural gas is transported to the high-pressure pipe through the natural gas inlet channel. Opening the corresponding connecting valve allows the natural gas to flow along the high-pressure pipe, medium-pressure pipe, or low-pressure pipe. When cross-stage pressure regulation is required, the natural gas flows between the high-pressure pipe and the low-pressure pipe through the cross-stage pressure reduction pipe, ultimately completing the transportation of natural gas at different pressures. It can flexibly realize the transportation of natural gas at multiple pressures. The cross-stage pressure reduction pipe can simplify the pressure regulation process, and the filter component ensures the cleanliness of the gas, meeting the differentiated needs of different downstream users for natural gas pressure. Attached Figure Description
[0016] Figure 1 This is a perspective view of a natural gas gathering and transmission station proposed in this utility model; Figure 2 This is a top view of a natural gas gathering and transmission station proposed in this utility model; Figure 3 This is an exploded view of a fully enclosed water heat exchange mechanism in a natural gas gathering and transmission station proposed in this utility model; Figure 4 This is an exploded view of a filter assembly in a natural gas gathering and transmission station according to the present invention. Figure 5 This is a schematic diagram of the structure of a low-pressure channel component in a natural gas gathering and transmission station proposed in this utility model.
[0017] Legend: 1. Natural gas heating box; 2. Natural gas inlet channel; 3. Fully enclosed water heat exchanger; 31. Enclosed heat exchange box; 32. Water pipe; 33. Water pump; 34. Heating box; 35. Heating assembly; 351. Flange; 352. Controlled temperature chamber; 353. Heating pipe; 4. Multi-stage pressure regulating and conveying mechanism; 41. High-pressure pipe; 42. Medium-pressure pipe; 43. Low-pressure pipe; 44. Connecting valve; 45. High-pressure channel assembly; 451. High-pressure conveying valve; 452. Pressure gauge one; 453. Thermometer; 46. Medium-pressure channel assembly; 461. High- and medium-pressure regulator; 462. Pressure gauge two; 463. Vent valve; 47. Low-pressure channel assembly; 471. Medium- and low-pressure regulator; 472. Meter; 473. Natural gas outlet; 48. Filter assembly; 481. Filter chamber; 482. Filter element; 483. Filter outlet; 49. Transitional pressure reducing pipe. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Reference Figures 1-3 The present invention provides an embodiment of a natural gas gathering and transmission station, including a natural gas heating box 1, a natural gas inlet channel 2 provided on the right side of the natural gas heating box 1, a fully enclosed water heat exchange mechanism 3 provided on the rear side of the natural gas heating box 1, the fully enclosed water heat exchange mechanism 3 being used to heat the natural gas, and a multi-stage pressure regulating and conveying mechanism 4 provided on the right side of the natural gas inlet channel 2, the multi-stage pressure regulating and conveying mechanism 4 being used to convey natural gas at different pressures; The fully enclosed water heat exchange mechanism 3 includes an enclosed heat exchange box 31. The inner wall of the enclosed heat exchange box 31 is fixedly connected to the outer wall of the natural gas heating box 1. Water pipes 32 are connected to the left and right ends of the rear side of the enclosed heat exchange box 31. A water exchange pump 33 is installed on the outer wall of the left water pipe 32. The two adjacent water pipes 32 are connected to the same heating box 34. A heating component 35 is installed on the top of the heating box 34. Specifically, the inner wall of the enclosed heat exchange box 31 is fixedly connected to the outer wall of the natural gas heating box 1, forming a fully enclosed structure for the natural gas heating box 1, providing a stable spatial foundation for subsequent heat exchange. Then, the heating box 34 starts operating, and the heating component 35 installed on its top begins to work, heating the heat exchange medium inside the heating box 34. When the heat exchange medium reaches the preset heat exchange requirement, the water exchange pump 33 installed on the outer wall of the left water pipe 32 starts, and through the power of the water exchange pump 33, the heated heat exchange medium in the heating box 34 is transported to the left water pipe. Inside the enclosure 32, the heat exchange medium flows into the enclosed heat exchange box 31 through the left water pipe 32. Since the enclosed heat exchange box 31 is tightly connected to the outer wall of the natural gas heating box 1, the heat exchange medium transfers heat to the natural gas heating box 1 through heat conduction during its flow inside the enclosed heat exchange box 31, thereby heating the natural gas inside the natural gas heating box 1. After completing the heat exchange, the medium flows back to the heating box 34 through the right water pipe 32, forming a circulating flow loop for the heat exchange medium, thereby achieving continuous and stable heating of the natural gas inside the natural gas heating box 1. After the natural gas is heated, it is transported to the multi-stage pressure regulating and conveying mechanism 4 through the natural gas inlet channel 2 located on the right side of the natural gas heating box 1. The multi-stage pressure regulating and conveying mechanism 4 regulates the pressure of the natural gas entering it according to different conveying requirements. Through the graded pressure regulation function of the internal structure, the natural gas reaches different preset pressure values. After the regulation is completed, the multi-stage pressure regulating and conveying mechanism 4 conveys the natural gas of the corresponding pressure to the subsequent pipeline. The precise delivery of natural gas at different pressures is achieved through the natural gas inlet channel 2 and the multi-stage pressure regulating and conveying mechanism 4.
[0020] Reference Figures 1-2 The multi-stage pressure regulating and conveying mechanism 4 includes a high-pressure pipe 41. The left side of the high-pressure pipe 41 is connected to the right side of the natural gas inlet channel 2. The front side of the high-pressure pipe 41 is connected to a medium-pressure pipe 42. The front side of the medium-pressure pipe 42 is connected to a low-pressure pipe 43. A connecting valve 44 is provided on the top left side of the high-pressure pipe 41 and the top front side of the medium-pressure pipe 42. A high-pressure channel assembly 45 is provided on the outer wall of the high-pressure pipe 41. A medium-pressure channel assembly 46 is provided on the outer wall of the medium-pressure pipe 42. A low-pressure channel assembly 47 is provided on the outer wall of the low-pressure pipe 43. A filter assembly 48 is provided at the right end of the high-pressure pipe 41. A cross-stage pressure reducing pipe 49 is connected between the bottom of the high-pressure pipe 41 and the bottom of the low-pressure pipe 43. Specifically, heated natural gas enters the high-pressure pipe 41 from the left side. If high-pressure natural gas needs to be transported, the operator can operate the connecting valve 44 on the top left side of the high-pressure pipe 41, keeping it open while ensuring the connecting valve 44 on the front side of the medium-pressure pipe 42 is closed. The natural gas then flows through the high-pressure channel assembly 45 installed on the outer wall of the high-pressure pipe 41. The high-pressure channel assembly 45 stabilizes the pressure of the natural gas, and the treated high-pressure natural gas is directly transported through the high-pressure pipe 41 to the designated subsequent pipeline, achieving stable high-pressure natural gas transport. When medium-pressure natural gas needs to be transported, the operator first operates the connecting valve 44 on the top left side of the high-pressure pipe 41 to close it, and then opens the connecting valve 44 on the front side of the medium-pressure pipe 42. Natural gas flows into the medium-pressure pipe 42 connected to its front side. The natural gas flows through the medium-pressure channel assembly 46 set on the outer wall of the medium-pressure pipe 42. The medium-pressure channel assembly 46 reduces the pressure and stabilizes the pressure of the natural gas. The treated medium-pressure natural gas is then transported to the subsequent designated pipeline through the medium-pressure pipe 42. The medium-pressure natural gas is accurately transported through the medium-pressure pipe 42, the connecting valve 44, and the medium-pressure channel assembly 46. If low-pressure natural gas needs to be transported, the connecting valve 44 at the top front of the medium-pressure pipe 42 can be opened to allow the natural gas in the medium-pressure pipe 42 to flow into the low-pressure pipe 43 connected to its front side. The natural gas flows through the low-pressure channel assembly 47 set on the outer wall of the low-pressure pipe 43. The low-pressure channel assembly 47 further reduces the pressure and stabilizes the pressure of the natural gas. The treated low-pressure natural gas is then transported to the subsequent designated pipeline through the low-pressure pipe 43. In addition, when it is necessary to directly convert the natural gas in the high-pressure pipe 41 into low-pressure natural gas for transportation, the control component corresponding to the cross-stage pressure reduction pipe 49 can be opened, so that the natural gas in the high-pressure pipe 41 flows directly into the bottom of the low-pressure pipe 43 through the cross-stage pressure reduction pipe 49 connected to its bottom, and then flows through the low-pressure channel assembly 47 for processing before transportation.
[0021] Reference Figures 2-4 The heating assembly 35 includes a flange 351, the bottom of which is fixedly connected to the top of the heating box 34. The top of the flange 351 is fixedly connected to a temperature control chamber 352, and the bottom of the flange 351 is fixedly connected to a heating pipe 353. The high-pressure channel assembly 45 includes a high-pressure delivery valve 451, the bottom of which is connected to the top of the natural gas inlet channel 2. A pressure gauge 452 is installed on the left side of the top of the high-pressure pipe 41, and a thermometer 453 is installed on the right side of the high-pressure pipe 41. The medium-pressure channel assembly 46 includes a high-pressure regulator 461, the interior of which is connected to the interior of the medium-pressure pipe 42. Two pressure gauges 462 are installed on the top of the medium-pressure pipe 42, and a vent valve 463 is connected to the left side of the outer wall of the pressure gauge 462. Specifically, the bottom of flange 351 is fixedly connected to the top of heating box 34. Through the connection of flange 351, the control chamber 352 and heating tube 353 are stably installed on heating box 34. When it is necessary to heat the medium in heating box 34, control chamber 352 is activated and the temperature of heating tube 353 is controlled. Heating tube 353 transfers heat to the heat exchange medium in heating box 34. Through the action of control chamber 352 and heating tube 353, precise heating of heat exchange medium in heating box 34 is achieved, providing a stable heat source for subsequent natural gas heating. The bottom of the high-pressure delivery valve 451 is connected to the top of the natural gas inlet channel 2. Before the natural gas flows into the high-pressure pipe 41 through the natural gas inlet channel 2, the flow rate of the natural gas can be controlled by operating the high-pressure delivery valve 451. After the natural gas enters the high-pressure pipe 41, the pressure gauge 452 set on the left side of the top of the high-pressure pipe 41 monitors the pressure of the natural gas in the pipe in real time, and the thermometer 453 set on the right side of the high-pressure pipe 41 monitors the temperature of the natural gas in the pipe in real time. Through the high-pressure delivery valve 451, the pressure gauge 452 and the thermometer 453, the flow rate, pressure and temperature of the natural gas in the high-pressure pipe 41 can be controlled in real time to ensure the stability of the high-pressure natural gas delivery process. The high-pressure regulator 461 is internally connected to the medium-pressure pipe 42. When natural gas flows from the high-pressure pipe 41 into the medium-pressure pipe 42, the high-pressure regulator 461 reduces the pressure of the natural gas to the medium-pressure standard. Two pressure gauges 462 installed at the top of the medium-pressure pipe 42 monitor the natural gas pressure at different locations in the pipe in real time. If the pressure in the pipe exceeds the preset range, the vent valve 463 connected to the left side of the outer wall of the pressure gauge 462 can be opened to regulate the pressure. Through the action of the high-pressure regulator 461, pressure gauges 462 and vent valve 463, the precise pressure regulation and pressure stability of the natural gas in the medium-pressure pipe 42 are achieved, ensuring the delivery of medium-pressure natural gas.
[0022] Reference Figures 4-5 The low-pressure channel assembly 47 includes a medium-low pressure regulator 471, the interior of which is connected to the interior of the low-pressure pipe 43. A meter 472 is connected to the right side of the medium-low pressure regulator 471, and a natural gas outlet 473 is connected to the right side of the meter 472. The filter assembly 48 includes a filter chamber 481, the left side of which is connected to the right side of the high-pressure pipe 41. A filter element 482 is installed inside the filter chamber 481, and a filter outlet 483 is connected to the bottom of the filter element 482. The input pressure of the high-medium pressure regulator 461 is 0.4-1.6 MPa, and the output pressure of the high-medium pressure regulator 461 is 0.01-0.4 MPa. Preferably, the output pressure of the high-medium pressure regulator 461 is set to 0.2 MPa. Specifically, the internal connection of the medium-pressure reducing valve 471 is connected to the internal connection of the low-pressure pipe 43. When natural gas flows from the medium-pressure pipe 42 into the low-pressure pipe 43, the medium-pressure reducing valve 471 reduces the pressure of the natural gas to the corresponding standard. The reduced-pressure natural gas enters the meter 472 connected to the right side of the medium-pressure reducing valve 471, and the meter 472 measures the flow rate of the natural gas. The measured natural gas is then transported to the subsequent pipeline through the natural gas outlet 473 connected to the right side of the meter 472. The left side of the filter chamber 481 is connected to the right side of the high-pressure pipe 41. When natural gas is transported to the right end in the high-pressure pipe 41, it flows into the filter chamber 481. The filter element 482 installed inside the filter chamber 481 filters impurities in the natural gas. The clean natural gas after removing impurities continues to be transported in the system. The impurities trapped during the filtration process are discharged from the filter chamber 481 through the filter outlet 483 connected to the bottom of the filter element 482. The filter chamber 481, filter element 482 and filter outlet 483 achieve the filtration and discharge of impurities in the natural gas in the high-pressure pipe 41, ensuring the cleanliness of the natural gas in the subsequent pressure regulation and transportation process.
[0023] Working principle: First, the heat exchange medium heating stage of the system is started. The core components are the heating box 34 and the matching heating assembly 35. In the heating assembly 35, the flange 351 is fixedly connected to the top of the heating box 34 through the bottom and four sides. With the rigid connection characteristics of the flange 351, the control chamber 352 and the heating tube 353 are stably assembled on the heating box 34, providing a structural basis for the heating of the heat exchange medium. When the system issues a heating command, the control chamber 352 starts first. According to the preset target temperature of the heat exchange medium, the heating power of the heating tube 353 is precisely controlled. Under the control of the control chamber 352, the heating tube 353 generates heat and transfers the heat to the heat exchange medium stored inside the heating box 34 through heat conduction. The heating continues until the temperature of the heat exchange medium reaches the preset heat exchange requirement threshold. At this time, the heat exchange medium heating stage is completed, providing a stable and temperature-compliant heat source for the subsequent natural gas heating stage. Next, the natural gas heating stage begins. Heat is transferred to the natural gas through an enclosed heat exchange structure. In this system, the inner wall of the enclosed heat exchange box 31 is tightly fixed to the outer wall of the natural gas heating box 1, forming a fully enclosed structure. This design maximizes the heat exchange contact area, ensuring heat exchange efficiency and stability. When the heat exchange medium reaches the preset temperature, the water exchange pump 33, mounted on the outer wall of the left water pipe 32, starts. The water exchange pump 33 generates a pressure difference, drawing the heat exchange medium, heated to the target temperature, from the heating box 34 into the left water pipe 32. Under the continuous power of the water exchange pump 33, the heat exchange medium flows along the left water pipe 32 into the internal cavity of the enclosed heat exchange box 31. Because the enclosed heat exchange box 31 and the natural gas... The outer wall of the heating box 1 is in direct contact with the heat exchange medium. During the flow of the heat exchange medium inside the enclosed heat exchange box 31, the heat it carries is transferred to the box body of the natural gas heating box 1 through heat conduction. Then, the box body transfers the heat to the natural gas stored inside, thereby heating the natural gas. After the heat transfer is completed, the temperature of the heat exchange medium decreases. Then, it flows back to the heating box 34 through the right water pipe 32 connected to the right side of the enclosed heat exchange box 31, forming a closed-loop circulation flow circuit of the heat exchange medium. During this process, the water pump 33 continuously provides power to ensure the circulation of the medium. The heating component 35 replenishes heat in real time according to the temperature change of the return medium, ensuring that the natural gas in the natural gas heating box 1 is always maintained within the preset temperature range, thereby achieving continuous and stable heating of the natural gas. After the natural gas is heated in the natural gas heating box 1, it enters the multi-stage pressure regulation and transportation link. The heated natural gas is first transported to the core pipeline system of the multi-stage pressure regulation and transportation mechanism 4 through the natural gas inlet channel 2 set on the right side of the natural gas heating box 1. According to the different gas demand of subsequent users, the multi-stage pressure regulation and precise transportation of natural gas can be realized. Specifically, it is divided into four modes: high pressure, medium pressure, low pressure and cross-stage pressure regulation and transportation. In high-pressure natural gas transmission mode, heated natural gas first enters the left port of high-pressure pipe 41 through natural gas inlet channel 2. At this time, the operator needs to operate the connecting valve 44 installed on the top left side of high-pressure pipe 41 to keep it open, while ensuring that the connecting valve 44 on the front side of the top of medium-pressure pipe 42 is closed to prevent natural gas diversion. Before natural gas enters high-pressure pipe 41, the bottom of the high-pressure delivery valve 451 in the high-pressure channel assembly 45 of high-pressure pipe 41 is connected to the top of natural gas inlet channel 2. The operator can precisely control the amount of natural gas entering high-pressure pipe 41 by adjusting the opening of the high-pressure delivery valve 451. After natural gas enters high-pressure pipe 41, the pressure gauge 452 installed on the top left side of high-pressure pipe 41 collects the pressure data of natural gas in the pipe in real time and feeds the data back to the system to realize real-time monitoring of the pressure in the pipe. At the same time, the temperature gauge 452 installed on the right side of high-pressure pipe 41... The thermometer 453 monitors the temperature of the natural gas in the pipe in real time to ensure that the natural gas is within a stable transportation temperature range. In addition, when the natural gas is transported to the right end of the high-pressure pipe 41, it will flow into the filter chamber 481 connected to the right side of the high-pressure pipe 41. The filter element 482 installed inside the filter chamber 481 uses high-precision filter material, which can effectively intercept solid and liquid impurities mixed in the natural gas. The clean natural gas after removing impurities continues to be transported in the high-pressure pipe 41. During the filtration process, the impurities intercepted by the filter element 482 will be deposited under the action of gravity and periodically discharged from the filter chamber 481 through the filter outlet 483 connected to the bottom of the filter element 482, so as to avoid impurities clogging the pipeline and affecting the transportation efficiency. Finally, the high-pressure natural gas, after being processed by quantity control, pressure control, temperature control and filtration, is directly transported through the high-pressure pipe 41 to the designated pipeline that needs high-pressure natural gas, realizing the stable and clean transportation of high-pressure natural gas. In medium-pressure natural gas transmission mode, the operator first operates the connecting valve 44 on the top left side of the high-pressure pipe 41 to close it; then, the connecting valve 44 on the front side of the top of the medium-pressure pipe 42 is opened. Since the front of the medium-pressure pipe 42 is connected to the middle of the high-pressure pipe 41, the natural gas in the high-pressure pipe 41 will flow into the medium-pressure pipe 42 under the action of pressure difference. In the medium-pressure channel assembly 46 of the medium-pressure pipe 42, the interior of the high-medium pressure regulator 461 is connected to the interior of the medium-pressure pipe 42. After the natural gas enters the medium-pressure pipe 42, it first flows through the high-medium pressure regulator 461. The high-medium pressure regulator 461 uses its internal pressure reducing valve core and spring to perform graded pressure reduction of the high-pressure natural gas, reducing its pressure to the preset medium-pressure standard range. To ensure medium pressure... The pressure inside pipe 42 is stable. Two pressure gauges 462 are installed at the top of the medium-pressure pipe 42 to monitor the pressure data at the inlet and outlet ends of the medium-pressure pipe 42, respectively. If the pressure inside the pipe exceeds the preset range, the staff can open the vent valve 463 connected to the left side of the outer wall of pressure gauge 462 to release some natural gas and regulate the pressure inside the pipe, ensuring that the pressure inside the pipe is always within a stable range. At the same time, during the transportation of natural gas in the medium-pressure pipe 42, it will also pass through the filter chamber 481 to ensure the cleanliness of the medium-pressure natural gas. Finally, the medium-pressure natural gas, after pressure reduction, pressure stabilization and filtration, is transported through the medium-pressure pipe 42 to the designated pipeline that needs medium-pressure natural gas, realizing the accurate transportation of medium-pressure natural gas. In the low-pressure natural gas transmission mode, there are two transmission paths. The first path is low-to-medium pressure transmission: a worker opens the connection valve 44 on the front side of the top of the medium-pressure pipe 42, so that the pressure-stabilized medium-pressure natural gas in the medium-pressure pipe 42 flows into the low-pressure pipe 43 communicated with the front side of the medium-pressure pipe 42; in the low-pressure channel assembly 47 matched with the low-pressure pipe 43, the interior of the medium-low pressure regulator 471 is communicated with the interior of the low-pressure pipe 43. After the natural gas enters the low-pressure pipe 43, it flows through the medium-low pressure regulator 471. The medium-low pressure regulator 471 performs further pressure reduction treatment on the medium-pressure natural gas through its internal precision pressure reducing structure, and reduces the pressure of the natural gas to a preset low-pressure standard range. The depressurized natural gas then enters the meter 472 communicated with the right side of the medium-low pressure regulator 471. The meter 472 accurately measures the volume of natural gas flowing through per unit time through its internal metering impeller, and uploads the metering data to the system in real time, which facilitates subsequent flow statistics and management. The metered clean low-pressure natural gas is delivered to the subsequent designated pipeline requiring low-pressure natural gas through the natural gas outlet 473 communicated with the right side of the meter 472. The second path is cross-stage low-pressure transmission: when it is necessary to directly convert the natural gas in the high-pressure pipe 41 into low-pressure natural gas for transmission, a worker can open the corresponding control component of the cross-stage pressure reducing pipe 49. Since the top of the cross-stage pressure reducing pipe 49 is communicated with the bottom of the high-pressure pipe 41, and the bottom is communicated with the bottom of the low-pressure pipe 43, the natural gas in the high-pressure pipe 41 directly flows into the bottom of the low-pressure pipe 43 through the cross-stage pressure reducing pipe 49 under the action of pressure difference, and then flows through the medium-low pressure regulator 471 for pressure reduction treatment, so as to ensure that the pressure of the natural gas reaches the low-pressure standard. After being metered by the meter 472, the natural gas is delivered to the subsequent designated pipeline through the natural gas outlet 473, which can reduce pressure regulation links and improve the transmission efficiency of low-pressure natural gas.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and is not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A natural gas gathering and transmission station, comprising a natural gas heating box (1), characterized in that: The natural gas heating box (1) is provided with a natural gas inlet channel (2) on the right side and a fully enclosed water heat exchange mechanism (3) on the rear side of the natural gas heating box (1). The fully enclosed water heat exchange mechanism (3) is used to heat the natural gas. The natural gas inlet channel (2) is provided with a multi-stage pressure regulating and conveying mechanism (4) on the right side. The multi-stage pressure regulating and conveying mechanism (4) is used to convey natural gas at different pressures. The fully enclosed water heat exchange mechanism (3) includes an enclosed heat exchange box (31). The inner wall of the enclosed heat exchange box (31) is fixedly connected to the outer wall of the natural gas heating box (1). Water pipes (32) are connected to the left and right ends of the rear side of the enclosed heat exchange box (31). A water exchange pump (33) is provided on the outer wall of the water pipe (32) on the left side. The two adjacent water pipes (32) are connected to the same heating box (34). A heating component (35) is provided on the top of the heating box (34).
2. A natural gas gathering and transmission station according to claim 1, characterized in that: The multi-stage pressure regulating and conveying mechanism (4) includes a high-pressure pipe (41), the left side of which is connected to the right side of the natural gas inlet channel (2), the front side of which is connected to a medium-pressure pipe (42), the front side of which is connected to a low-pressure pipe (43), a connecting valve (44) is provided on the top left side of the high-pressure pipe (41) and the top front side of the medium-pressure pipe (42), a high-pressure channel assembly (45) is provided on the outer wall of the high-pressure pipe (41), a medium-pressure channel assembly (46) is provided on the outer wall of the medium-pressure pipe (42), a low-pressure channel assembly (47) is provided on the outer wall of the low-pressure pipe (43), a filter assembly (48) is provided on the right end of the high-pressure pipe (41), and a cross-stage pressure reducing pipe (49) is connected between the bottom of the high-pressure pipe (41) and the bottom of the low-pressure pipe (43).
3. A natural gas gathering and transmission station according to claim 1, characterized in that: The heating assembly (35) includes a flange (351), the bottom of which is fixedly connected to the top of the heating box (34), the top of which is fixedly connected to a temperature control chamber (352), and the bottom of which is fixedly connected to a heating tube (353).
4. A natural gas gathering and transmission station according to claim 2, characterized in that: The high-pressure channel assembly (45) includes a high-pressure delivery valve (451), the bottom of which is connected to the top of the natural gas inlet channel (2). A pressure gauge (452) is provided on the left side of the top of the high-pressure pipe (41), and a thermometer (453) is provided on the right side of the high-pressure pipe (41).
5. A natural gas gathering and transmission station according to claim 2, characterized in that: The medium-pressure channel assembly (46) includes a high-pressure regulator (461), the interior of which is connected to the interior of the medium-pressure pipe (42). Two pressure gauges (462) are provided on the top of the medium-pressure pipe (42), and a vent valve (463) is connected to the left side of the outer wall of the pressure gauges (462).
6. A natural gas gathering and transmission station according to claim 2, characterized in that: The low-pressure channel assembly (47) includes a medium-low pressure reducer (471), the interior of which is connected to the interior of the low-pressure pipe (43), and a meter (472) is connected to the right side of the medium-low pressure reducer (471), and a natural gas outlet (473) is connected to the right side of the meter (472).
7. A natural gas gathering and transmission station according to claim 2, characterized in that: The filter assembly (48) includes a filter chamber (481), the left side of which is connected to the right side of the high-pressure pipe (41), and a filter element (482) is provided inside the filter chamber (481). The bottom of the filter element (482) is connected to a filter outlet (483).
8. A natural gas gathering and transmission station according to claim 5, characterized in that: The input pressure of the high-medium voltage regulator (461) is 0.4-1.6 MPa, and the output pressure of the high-medium voltage regulator (461) is 0.01-0.4 MPa.