A liquefied natural gas transmission pipeline system
By designing and distributing pipelines, heat exchangers, auxiliary pipelines and monitoring devices in the liquefied natural gas delivery pipeline system, energy waste and positioning difficulties caused by long pipeline distances are solved, and more efficient energy utilization and accurate pipeline monitoring and maintenance are achieved.
Patent Information
- Application Number
- CN202420891022.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Due to the long distance of the pipelines, the monitoring of the natural gas status of the liquefied natural gas pipelines is difficult to monitor, and the energy required for maintenance is large, which can easily cause excessive energy loss and difficult positioning.
A liquefied natural gas delivery pipeline system is designed, including distribution pipelines, heat exchangers, auxiliary pipelines, temperature sensors and controllers. By setting up distribution pipes and heat exchangers next to the conveying pipeline, the auxiliary pipes and cooling stations perform phased temperature control to reduce energy consumption; grooves and partition blocks are set inside the auxiliary pipes, and the partition pipes are multiple sealed parts, which facilitate positioning and maintenance.
Through phased temperature control, energy consumption during the transportation process is reduced; by separating the pipeline, temperature and pressure monitoring accuracy during the transportation process is improved, the maintenance process is simplified, and energy loss and positioning difficulties are reduced.
Smart Images
Figure CN222718000U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of natural gas transportation, in particular to a liquefied natural gas transportation pipeline system. Background Art
[0002] There are many ways to transport natural gas, including pipeline transportation, compression transportation, road and rail transportation, etc. Among them, pipeline transportation is undoubtedly the mainstream way of natural gas transportation. Pipeline transportation has the advantages of large transportation volume, good continuity and high safety, which makes it the preferred way of natural gas transportation. By laying a large-scale gas pipeline network, natural gas can be transported from the production area to the consumption area to meet the energy needs of various places.
[0003] Although liquefied natural gas (LNG) pipeline transportation has many advantages, such as large transportation volume, good continuity, and high safety, it also has the following defects: 1. Since LNG needs to be transported under low temperature conditions, but the laid pipelines often span long distances, the cooling station requires a large amount of power to cool the pipelines, resulting in energy waste; 2. Due to the long distance of the pipeline, natural gas may encounter problems during transportation, but the specific location cannot be locked. Utility Model Content
[0004] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a liquefied natural gas transmission pipeline system. It is expected to solve the following problems: the long pipeline distance makes it difficult to monitor the natural gas status inside the pipeline, and the energy required for maintenance is large, which easily causes excessive energy loss and difficult positioning.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A liquefied natural gas transmission pipeline system includes a distribution pipeline, both ends of which are connected to the transmission pipeline respectively, and both ends of the distribution pipeline are provided with valves, and the medium of the transmission pipeline is controlled by the valve to temporarily enter the distribution pipeline;
[0007] A heat exchanger is sleeved on the adjustment pipeline, and an auxiliary pipeline is arranged outside the heat exchanger, and the auxiliary pipeline is used to adjust the heat exchange medium in the heat exchanger;
[0008] Wherein, a temperature sensor is provided on the delivery pipeline, and the temperature sensor is respectively close to the input end and the output end of the deployment pipeline.
[0009] It should be noted that the liquid in the auxiliary pipeline may be other media such as refrigerant.
[0010] Auxiliary pipeline, the outer wall of the auxiliary pipeline is provided with a heat insulation layer, the heat insulation layer is used to prevent the surrounding medium from transferring heat to the medium in the auxiliary pipeline; a cooling station and a pressurizing station are also provided outside the auxiliary pipeline, the cooling station exchanges heat with the auxiliary pipeline through circulating coolant or refrigerant, thereby absorbing heat in the auxiliary pipeline and reducing the temperature of the auxiliary pipeline; the pressurizing station is used to pressurize the medium in the auxiliary pipeline;
[0011] A temperature sensor is provided inside the auxiliary pipeline, and the temperature sensor is used to monitor the temperature inside the auxiliary pipeline. A controller is provided outside the auxiliary pipeline, and the controller is connected to the cooling station and the temperature sensor through electrical signals;
[0012] A first groove is provided at the bottom of the auxiliary pipe, a second groove corresponding to the first groove is provided at the upper part of the auxiliary pipe, the first groove and the second groove are connected through a partition, a partition is provided at the upper part of the second groove, and the partition is connected to the second groove through a hidden hinge.
[0013] It should be noted that the number of the temperature sensors is set according to the length of the auxiliary pipeline and the specific soil conditions, etc., and its purpose is to monitor the temperature conditions in the auxiliary pipeline; the concealed hinge is a hinge with resilient properties.
[0014] Furthermore, the partition is divided into two left and right parts and contacts each other, at which time the partition is in an initial state, and the partition is used to seal the upper part of the auxiliary pipe; the partition opens downward under the action of external force, and the short side of the partition contacts the second groove, at which time the partition is in a second state.
[0015] Furthermore, a partition block is provided outside the auxiliary pipeline, and the partition block is used to divide the auxiliary pipeline into a plurality of independent spaces, and the partition block is lifted and lowered under the action of an external force.
[0016] Furthermore, a plurality of monitoring devices are provided along the outer side of the auxiliary pipeline, and the monitoring devices are connected to the cooling station and the pressurizing station through electrical signals. The monitoring devices are used to monitor the pressure and temperature of the medium inside the auxiliary pipeline, and the monitoring devices transmit specific information and locations to the controller through electrical signals.
[0017] Furthermore, alarm devices are provided at both ends of the auxiliary pipeline, and the alarm devices are connected to the monitoring device via electrical signals, and the alarm devices are used to monitor the temperature and pressure inside the auxiliary pipeline.
[0018] Furthermore, when the partition block leaves the partition, the partition returns to the initial state from the second state due to the loss of external force, and rubber rings are provided at both ends of the partition that contact each other.
[0019] It should be noted that the two ends of the partition that contact each other are set to rubber material, which can seal the auxiliary pipeline on the one hand, and protect the contact objects on the other hand to avoid damage to the equipment.
[0020] Furthermore, a flow meter is provided on the transmission pipeline, and the flow meter is used to monitor the flow of natural gas on the transmission pipeline.
[0021] Furthermore, the width of the top of the partition block is greater than the width of the second groove, and when the partition block is placed between the partitions, the upper portion of the partition block contacts the outer side of the auxiliary pipe.
[0022] It should be noted that the upper part of the partition block does not enter the auxiliary pipeline and serves as a limit.
[0023] Furthermore, when the partition block is in a non-working state, the partition block is placed in a partition cover, the bottom of the partition cover is connected to the auxiliary pipeline, and a joystick is provided on the top of the partition cover, and the joystick is operated by an external force.
[0024] It should be noted that the non-working state of the partition block means that the partition block is not located between the partition plates, that is, it does not play a role in separating the auxiliary pipelines.
[0025] Compared with the prior art, the beneficial effects of the utility model are:
[0026] The utility model arranges a distribution pipeline beside the natural gas transmission pipeline, inputs the natural gas that needs to be cooled into the distribution channel, and performs cooling operation on the distribution channel, thereby regulating the transportation temperature during transportation. Compared with the temperature control before output, the staged temperature control can save more energy consumption;
[0027] The utility model can divide the auxiliary pipeline into several sealed shorter parts by arranging grooves inside the auxiliary pipeline, so as to achieve the purpose of reducing loss and accurate maintenance when problems occur in the heat exchange medium;
[0028] The utility model provides a temperature sensor inside the auxiliary pipeline and simultaneously provides a controller to be connected with the temperature sensor by electrical signals, so that the staff and maintenance personnel can judge the temperature of the medium inside the auxiliary pipeline;
[0029] The utility model arranges a monitoring device outside the auxiliary pipeline, and connects the detection device with the cooling station and the pressurizing station through electrical signals, so that the cooling station and the pressurizing station can work according to the specific conditions of the auxiliary pipeline, thereby improving the monitoring and maintenance efficiency of the auxiliary pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0031] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;
[0032] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present utility model;
[0033] Figure 4 This is a structural schematic diagram of the utility model partition in the second state;
[0034] Figure 5 This is a structural diagram for reference of concealed hinges.
[0035] Label description: 1. Conveying pipeline; 2. Insulation layer; 3. Cooling station; 4. Pressurizing station; 5. Temperature sensor; 6. Controller; 7. First groove; 8. Second groove; 9. Partition room; 10. Partition; 11. Partition block; 12. Partition cover; 13. Joystick; 16. Alarm device; 44. Flow meter; 55. One-way valve; 66. Auxiliary pipeline; 77. Heat exchanger; 88. Valve; 99. Distribution pipeline. DETAILED DESCRIPTION
[0036] The utility model will be further described below in conjunction with the accompanying drawings.
[0037] Example 1: Figure 1 As shown, one embodiment of the utility model is a conveying pipeline 1, an insulation layer 2, a cooling station 3, a pressurizing station 4, a temperature sensor 5, a controller 6, a first groove 7, a second groove 8, a partition room 9, a partition 10, a partition block 11, a partition cover 12, an alarm device 16, a flow meter 44, a one-way valve 55, an auxiliary pipeline 66, a heat exchanger 77, a valve 88, and a deployment pipeline 99.
[0038] The system includes a deployment pipeline 99, both ends of which are connected to the delivery pipeline 1, and both ends of the deployment pipeline 99 are provided with a one-way valve 55, and the one-way valve 55 controls the medium of the delivery pipeline to temporarily enter the deployment pipeline 99;
[0039] The heat exchanger 77 is sleeved on the adjustment pipeline 99, and an auxiliary pipeline 66 is arranged outside the heat exchanger 77, and the auxiliary pipeline 66 is used to adjust the heat exchange medium in the medium heat exchanger 77;
[0040] Among them, a temperature sensor 5 is provided on the delivery pipeline 1, and the temperature sensor 5 is respectively close to the input end and the output end of the deployment pipeline 99. A valve 88 is provided on the delivery pipeline 1, and a one-way valve 55 is provided on the auxiliary pipeline 66.
[0041] The heat exchange medium in the adjustment pipeline 99 can be a medium such as a refrigerant, which can cool the liquid natural gas in the transmission pipeline 1.
[0042] Example 2: Figure 2 As shown, one embodiment of the utility model is that the conveying system includes an auxiliary pipeline 66, the outer wall of the auxiliary pipeline 66 is provided with a heat insulation layer 2, the heat insulation layer 2 is used to prevent the surrounding medium from transferring heat to the medium in the auxiliary pipeline 66, and a cooling station 3 and a pressurizing station 4 are provided outside the auxiliary pipeline 66. The specific number of the cooling station 3 and the pressurizing station 4 is set according to actual use requirements; the cooling station 3 exchanges heat with the auxiliary pipeline 66 through circulating coolant or refrigerant, thereby absorbing the heat in the auxiliary pipeline 66 and reducing the temperature of the auxiliary pipeline 66; the pressurizing station 4 is used to pressurize the medium in the auxiliary pipeline 66;
[0043] A temperature sensor 5 is provided inside the auxiliary pipeline 66 , and the temperature sensor 5 is used to monitor the temperature inside the auxiliary pipeline 66 . A controller 6 is provided outside the auxiliary pipeline 66 , and the controller 6 is connected to the cooling station 3 and the temperature sensor 5 through electrical signals.
[0044] After the heat exchange medium is transported to the auxiliary pipeline 66, the temperature sensor 5 monitors the temperature inside the pipeline; after the temperature sensor 5 detects abnormal data, it transmits the information to the controller 6. The controller 6 can display the specific data on the display through an external display, so that the staff can check and determine the suitability of the heat exchange medium. If there is any abnormality, it is helpful to carry out regulation and equipment maintenance.
[0045] A first groove 7 is provided at the bottom of the auxiliary pipe 66, and a second groove 8 corresponding to the first groove 7 is provided at the upper part of the auxiliary pipe 66. The first groove 7 and the second groove 8 are connected through a partition 9. A partition 10 is provided at the upper part of the second groove 8, and the partition 10 is connected to the second groove 8 through a hidden hinge.
[0046] The partition 10 is divided into two left and right parts and contacts each other. At this time, the partition 10 is in an initial state, and the partition 10 is used to seal the upper part of the auxiliary pipe 66; the partition 10 opens downward under the action of external force, and the short side of the partition 10 contacts the second groove 8. At this time, the partition 10 is in a second state.
[0047] The concealed hinge has a resilient property. When no external force is applied, the partition 10 is in an initial state, that is, the left and right parts of the partition 10 are in contact with each other and parallel to the pipeline; when an external force acts on the partition 10, the left and right parts of the partition 10 are separated and rotate downward with the concealed hinge as the axis. When the short side of the partition 10 is in contact with the second groove 8, the partition 10 is in a second state.
[0048] The temperature sensor may be a temperature sensor of the "RMS-T10-0004" model, or may be a temperature sensor of other existing models; the cooling station and the pressurizing station are existing technologies.
[0049] Example 3: Figure 3 As shown, another embodiment of the utility model is that a partition block 11 is provided outside the auxiliary pipeline 66, and the partition block 11 is used to divide the auxiliary pipeline 66 into a plurality of independent spaces, and the partition block 11 is lifted and lowered under the action of an external force.
[0050] The auxiliary pipe 66 needs to be laid over a long distance during actual use, so multiple first grooves 7 and second grooves 8 are set inside the auxiliary pipe 66; when not working, the partition block 11 is placed in the partition cover 12, and a joystick 13 is provided on the top of the partition cover 12. The joystick 13 is applied by an external force, such as a control device or a larger machine, to the partition block 11, thereby manipulating the partition block 11 to rise or fall as needed.
[0051] Example 4: On the basis of the foregoing example, the utility model may also adopt the following setting method. In order to improve the difficulty of positioning during pipeline maintenance, a plurality of monitoring devices are arranged along the outer side of the auxiliary pipeline 66. The monitoring devices are connected to the cooling station 3 and the pressurizing station 4 through electrical signals. The monitoring devices are used to monitor the delivery pressure and temperature of the heat exchange medium inside the auxiliary pipeline 66. The monitoring devices transmit specific information and the location to the controller through electrical signals.
[0052] The temperature sensor 5 is connected to the monitoring device through an electrical signal, and transmits information to the cooling station 3 and the pressurizing station 4 or the display through the controller, thereby helping the staff to locate the specific fault location and achieve the purpose of rapid maintenance.
[0053] Example 5: On the basis of the foregoing embodiments, the present invention can also adopt the following settings. In order to adapt to the natural gas transportation methods in various places, such as compression transportation and road and rail transportation, its structural design can be locally set in a variety of pipeline scenarios, and grooves and partition blocks 11 can also be set at the entrance and exit of the auxiliary pipeline 66. The purpose is to prevent the cooling medium from leaking and causing damage to surrounding objects; corresponding, existing valves can also be used to shut down the medium transportation status inside the pipeline.
[0054] In summary, the utility model divides the auxiliary pipeline 66 into several small closed spaces by setting an auxiliary pipeline outside the natural gas transmission pipeline. When the natural gas in the pipeline shows deviations in temperature and other data, the problem point can be quickly located to cool the natural gas. The pressurization method is conducive to increasing the circulation of the heat exchange medium, so that the flow rate is matched with the transportation demand of the natural gas transmission pipeline through the pressurizing station 4.
[0055] The "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the feature, structure or characteristic can be realized in conjunction with other embodiments and also falls within the scope of the utility model.
[0056] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to modifications and improvements to the components and / or layout, other uses will also be apparent to those skilled in the art.
Claims
1. A liquefied natural gas pipeline system, characterized in that: It includes a deployment pipeline, both ends of which are connected to the delivery pipeline respectively, and both ends of the deployment pipeline are provided with a one-way valve, and the one-way valve controls the medium of the delivery pipeline to temporarily enter the deployment pipeline; A heat exchanger is sleeved on the adjustment pipeline, and an auxiliary pipeline is arranged outside the heat exchanger, and the auxiliary pipeline is used to adjust the heat exchange medium in the heat exchanger; Among them, a temperature sensor is provided on the delivery pipeline, and the temperature sensor is respectively close to the input end and the output end of the deployment pipeline. A valve is provided on the delivery pipeline, and a one-way valve is provided on the auxiliary pipeline.
2. A liquefied natural gas pipeline system according to claim 1, characterized in that: A first groove is provided at the bottom of the auxiliary pipeline, a second groove corresponding to the first groove is provided at the upper part of the auxiliary pipeline, the first groove and the second groove are connected through a partition, a partition is provided at the upper part of the second groove, and the partition is connected to the second groove through a concealed hinge; The partition is divided into two parts, left and right, and they are in contact with each other. At this time, the partition is in the initial state, and the partition is used to seal the upper part of the auxiliary pipeline; the partition is opened downward under the action of external force, and the short side of the partition is in contact with the second groove. At this time, the partition is in the second state; A partition block is provided outside the auxiliary pipeline, and the partition block is used to divide the auxiliary pipeline into a plurality of independent spaces. The partition block is lifted or lowered under the action of an external force.
3. A liquefied natural gas pipeline system according to claim 1, characterized in that: The outer wall of the auxiliary pipeline is provided with an insulation layer, which is used to prevent the surrounding medium from transferring heat to the medium in the auxiliary pipeline; a cooling station and a pressurizing station are also provided outside the auxiliary pipeline, and the cooling station exchanges heat with the auxiliary pipeline through circulating coolant or refrigerant, thereby absorbing heat in the auxiliary pipeline and reducing the temperature of the auxiliary pipeline; the pressurizing station is used to pressurize the medium in the auxiliary pipeline.
4. A liquefied natural gas pipeline system according to claim 3, characterized in that: A temperature sensor is provided inside the auxiliary pipeline, and the temperature sensor is used to monitor the temperature inside the auxiliary pipeline. A controller is provided outside the auxiliary pipeline, and the controller is connected to the cooling station and the temperature sensor through electrical signals.
5. A liquefied natural gas pipeline system according to claim 4, characterized in that: A plurality of monitoring devices are provided along the outer side of the auxiliary pipeline, and the monitoring devices are connected to the cooling station and the pressurizing station via electrical signals. The monitoring devices are used to monitor the pressure and temperature of the medium inside the auxiliary pipeline, and the monitoring devices transmit specific information and locations to the controller via electrical signals.
6. A liquefied natural gas pipeline system according to claim 5, characterized in that: Alarm devices are provided at both ends of the auxiliary pipeline. The alarm devices are connected to the temperature sensor and the monitoring device through electrical signals. The alarm devices are used to monitor the temperature and pressure inside the auxiliary pipeline.
7. A liquefied natural gas pipeline system according to claim 2, characterized in that: When the partition block leaves the partition, the partition returns to the initial state from the second state due to the loss of external force, and rubber rings are provided at both ends of the partition that contact each other.
8. A liquefied natural gas pipeline system according to claim 1, characterized in that: The delivery pipeline is provided with a flow meter, and the flow meter is used to monitor the flow of natural gas on the delivery pipeline.
9. A liquefied natural gas pipeline system according to claim 2, characterized in that: The width of the top of the partition block is greater than the width of the second groove. When the partition block is placed between the partitions, the upper portion of the partition block contacts the outer side of the auxiliary pipe.
10. A liquefied natural gas pipeline system according to claim 2, characterized in that: When the partition block is in a non-working state, the partition block is placed in a partition cover, the bottom of the partition cover is connected to an auxiliary pipeline, and a joystick is provided on the top of the partition cover, and the joystick is operated by an external force.