CN209762733U - Natural gas system with anti-stress function - Google Patents
Natural gas system with anti-stress function Download PDFInfo
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- CN209762733U CN209762733U CN201920330583.2U CN201920330583U CN209762733U CN 209762733 U CN209762733 U CN 209762733U CN 201920330583 U CN201920330583 U CN 201920330583U CN 209762733 U CN209762733 U CN 209762733U
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Abstract
The utility model relates to a natural gas system with anti-stress, which consists of a conveying pipeline and a gas transmission station, wherein the conveying pipeline is provided with flange openings at intervals along a conveying path, and the flange openings are positioned at two sides of the horizontal plane of the conveying pipeline; each flange opening is communicated with one slow-release cavity, an outlet of each flange opening is sealed by using an electromagnetic valve, a vacuum pump is arranged on the opposite side of each slow-release cavity, which is positioned on the flange opening, and an outlet of each vacuum pump is arranged opposite to the flange opening; pressure and temperature data detected by the pressure sensor and the temperature sensor are uploaded to the processor; when the temperature and the pressure are increased, the processor controls the opening of the electromagnetic valves of the flange openings to release the pressure in the conveying pipeline through the slow release cavity; when temperature and pressure reply, the solenoid valve is closed, and the gas in the slowly-releasing intracavity is got rid of to the vacuum pump simultaneously, makes slowly-releasing chamber be in vacuum or half vacuum state, and the dynamic stress that causes because of the temperature can be solved to this scheme to improve the stability of pipeline.
Description
Technical Field
The utility model relates to a natural gas field of carrying, concretely relates to natural gas system with prevent stress.
Background
because the gas pipeline covers a wide range, and the conveying medium is special, the safety and stability of the gas pipeline are very important. In order to ensure the safety of pipeline operation, it is necessary to analyze the stress of the pipeline system, the pipeline stress mainly includes static stress and dynamic stress, and in order to solve the influence caused by the stress, the most common method at present is to change the pipeline trend or increase the pipeline flexibility in the pipeline section with excessive stress, so that the pipeline meets the requirement of allowable stress.
through analysis, the natural gas can be known that the pipeline bears the effect of expansion stress due to the temperature change of the pipeline of the gas station, so that the pipeline is deformed, the trend of the pipeline is changed or the flexibility of the pipeline is increased to be effective only for static stress in the prior art, and the problem that the stress formed by gas expansion caused by temperature is increased suddenly cannot be solved, so that the surface of the pipeline is broken, and potential safety hazards are formed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a natural gas system with prevent stress, can solve the dynamic stress that causes because of the temperature to improve the stability of pipeline.
The purpose of the utility model is realized through the following technical scheme:
A natural gas system with stress resistance consists of a conveying pipeline and a gas transmission station, wherein the conveying pipeline is provided with flange openings at intervals along a conveying path, and the flange openings are positioned on two sides of the horizontal plane of the conveying pipeline;
Each flange opening is communicated with one slow-release cavity, an outlet of each flange opening is sealed by using an electromagnetic valve, the slow-release cavity is positioned on the opposite side of the flange opening and is provided with a vacuum pump, and an outlet of the vacuum pump and the flange opening are oppositely formed;
The device also comprises a pressure sensor, a temperature sensor and a processor which are arranged at intervals along the conveying pipeline, and pressure and temperature data detected by the pressure sensor and the temperature sensor are uploaded to the processor;
When the temperature and the pressure are increased, the processor controls the opening of the electromagnetic valves of the flange openings to release the pressure in the conveying pipeline through the slow release cavity;
When the temperature and the pressure are recovered, the electromagnetic valve is closed, and meanwhile, the vacuum pump exhausts fuel gas in the slow release cavity, so that the slow release cavity is in a vacuum or semi-vacuum state.
Different with traditional stress slowly-releasing, this scheme utilizes the flange to set up a plurality of slowly-releasing chambeies that are used for slowly-releasing pressure at the interval on natural gas line, and the flange mouth sets up the solenoid valve and controls, and slowly-releasing chamber then the symmetry evenly sets up, can avoid the violent fluctuation of in-line pressure because of the slowly-releasing process causes to guarantee pipeline's steady flow, and played the effect of slowly-releasing stress.
Furthermore, the volume of the slow release cavity is 5-10L, the slow release cavity is used as a stress buffering container, the space of the slow release cavity is not too large, and the problem of unstable air supply caused by too large space is avoided.
Furthermore, the slow release cavities are arranged at intervals of 100-200 meters, the arranged intervals are short, the effect of slow release stress is obvious, the influence on air supply stability is small, and the problem that the air supply flow fluctuates due to the fact that a large slow release cavity is arranged at a long interval is avoided.
further, a sensor for detecting pressure is arranged in the slow release cavity, and the vacuum pump is turned off when the pressure in the slow release cavity is in a vacuum or semi-vacuum state.
further, the gas that the vacuum pump was derived is carried the recycle bin by the pipeline and is unified the processing, and unified centralized processing can avoid the natural gas pollution, avoids directly discharging to the atmosphere and causes the potential safety hazard.
Further, the processor employs a PLC of the siemens CPU226 series.
the utility model has the advantages that: this scheme is through configuring the slowly-releasing chamber at gas transmission pipeline distance, keep apart through the solenoid valve in the flange between slowly-releasing chamber and the gas transmission pipeline under the normal condition, make the normal transport of gas transmission pipeline not influenced, when pressure or temperature rise, the solenoid valve switches on, make slowly-releasing chamber and gas transmission pipeline switch on, thereby make the whole space grow of gas transmission pipeline, a stress for in the balanced gas transmission pipeline, after atmospheric pressure or temperature reply are normal, the solenoid valve is closed, the vacuum pump carries out the evacuation operation to the slowly-releasing intracavity simultaneously, make the slowly-releasing intracavity be in the vacuum state, vacuum here does not refer to absolute vacuum state, but the atmospheric pressure in the slowly-releasing intracavity is less than the atmospheric pressure in the gas transmission pipeline, thereby make the solenoid valve open after gas transmission pipeline atmospheric pressure rises, high-pressure gas can enter into the slowly-releasing intracavity automatically, thereby balanced gas transmission pipeline receives the stress.
Drawings
FIG. 1 is a logic control diagram of the present invention;
FIG. 2 is a schematic view of the piping system of the present invention;
Fig. 3 is a schematic structural diagram of the stress slow-release cavity of the present invention.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
as shown in figure 1, the natural gas system with stress resistance consists of a conveying pipeline 1 and a gas transmission station, wherein the conveying pipeline 1 is provided with flange openings 2 at intervals along a conveying path, and the flange openings 2 are positioned on two sides of the horizontal plane of the conveying pipeline 1; each flange port 2 is communicated with one slow-release cavity 3, the outlet of the flange port 2 is sealed by using an electromagnetic valve 6, a vacuum pump 7 is arranged on the opposite side of the slow-release cavity 3 to the flange port 2, and the outlet of the vacuum pump 7 is arranged opposite to the flange port 2; the device also comprises a pressure sensor 4, a temperature sensor 5 and a processor which are arranged at intervals along the conveying pipeline 1, wherein pressure and temperature data detected by the pressure sensor and the temperature sensor are uploaded to the processor;
The control strategy of the processor is as follows:
When the temperature and the pressure are increased, the processor controls the opening of the electromagnetic valves 6 of the flange openings 2 to release the pressure in the conveying pipeline 1 through the slow release cavity 3;
When the temperature and the pressure are recovered, the electromagnetic valve 6 is closed, and meanwhile, the vacuum pump 7 exhausts the fuel gas in the slow release cavity 3, so that the slow release cavity 3 is in a vacuum or semi-vacuum state.
more specifically, the volume of the slow release cavity 3 is 5-10L, the slow release cavity 3 is arranged at intervals of 100-200 meters, a sensor for detecting pressure is arranged in the slow release cavity 3, when the pressure in the slow release cavity 3 is in a vacuum or semi-vacuum state, the vacuum pump 7 is turned off, fuel gas led out by the vacuum pump 7 is conveyed to a recovery station by a pipeline for unified treatment, and the processor adopts PLC of Siemens CPU226 series.
The foregoing is merely a preferred embodiment of the invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to limit the invention to other embodiments, and to various other combinations, modifications, and environments and may be modified within the scope of the inventive concept as described herein by the teachings or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. A natural gas system with stress resistance consists of a conveying pipeline (1) and a gas station, and is characterized in that the conveying pipeline (1) is provided with flange openings (2) at intervals along a conveying path, and the flange openings (2) are positioned on two sides of the horizontal plane of the conveying pipeline (1);
Each flange port (2) is communicated with one slow-release cavity (3), an outlet of each flange port (2) is sealed by using an electromagnetic valve (6), the slow-release cavity (3) is positioned on the opposite side of the flange port (2) and is provided with a vacuum pump (7), and an outlet of each vacuum pump (7) is arranged opposite to the flange port (2);
the device also comprises a pressure sensor (4), a temperature sensor (5) and a processor which are arranged at intervals along the conveying pipeline (1), wherein pressure and temperature data detected by the pressure sensor (4) and the temperature sensor (5) are uploaded to the processor;
when the temperature and the pressure are increased, the processor controls the opening of the electromagnetic valves (6) of the flange openings (2) to release the pressure in the conveying pipeline (1) through the slow release cavity (3);
when the temperature and the pressure are recovered, the electromagnetic valve (6) is closed, and meanwhile, the vacuum pump (7) exhausts the fuel gas in the slow release cavity (3) to enable the slow release cavity (3) to be in a vacuum or semi-vacuum state.
2. Stress-proof natural gas system according to claim 1, characterized in that the volume of the slow release chamber (3) is 5-10L.
3. A natural gas system with stress protection according to claim 2, wherein the slow release chambers (3) are arranged one at each interval of 100-200 meters.
4. The natural gas system with stress protection as claimed in claim 1, wherein a sensor for detecting pressure is arranged in the slow release chamber (3), and the vacuum pump (7) is turned off when the pressure in the slow release chamber (3) is in a vacuum or semi-vacuum state.
5. the natural gas system with stress prevention function according to claim 4, wherein the fuel gas led out by the vacuum pump (7) is conveyed to a recovery station by a pipeline for uniform treatment.
6. The natural gas system with stress relief of claim 1, wherein said processor employs a PLC of the siemens CPU226 series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330583.2U CN209762733U (en) | 2019-03-15 | 2019-03-15 | Natural gas system with anti-stress function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330583.2U CN209762733U (en) | 2019-03-15 | 2019-03-15 | Natural gas system with anti-stress function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209762733U true CN209762733U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920330583.2U Active CN209762733U (en) | 2019-03-15 | 2019-03-15 | Natural gas system with anti-stress function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209762733U (en) |
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2019
- 2019-03-15 CN CN201920330583.2U patent/CN209762733U/en active Active
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