Super-high sulfur-containing wet gas pressurization station yard station crossing process system
By using a combination of axial flow check valves and control and safety valve groups in ultra-high sulfur wet gas booster stations, the problems of automatic control system abnormalities and hydrogen sulfide leakage were solved, and a safe and economical cross-station process system was realized.
Patent Information
- Application Number
- CN202422690425.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-05
AI Technical Summary
During the process of passing ultra-high sulfur wet gas boosting stations, the existing technology has the problem that the automatic valve cannot be opened due to abnormalities in the automatic control system. In addition, there is a high risk of hydrogen sulfide leakage from the ultra-high sulfur gas field during routine valve group inspection and maintenance, threatening the safety of operators.
Axial flow check valves are used as core equipment, combined with control valve groups and safety valve groups to achieve mechanical automatic opening, avoid leakage of ultra-high sulfur natural gas, and reduce the impact of system failures through remote control and safety venting valve groups.
It has achieved safe cross-station transportation of ultra-high sulfur natural gas, reduced the threat to operators' lives posed by system failures, reduced project investment and achieved energy conservation and consumption reduction.
Smart Images
Figure CN223375591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ultra-high sulfur content gathering and transportation technology, in particular to an ultra-high sulfur content wet gas boosting station and cross-station process system. Background Art
[0002] When conventional ultra-high sulfur wet gas booster stations are operated, manual valves are usually installed. After the station is shut down, the station personnel manually open them on site.
[0003] In the existing technology, problems such as the inability of automatic valves to open due to abnormalities in the automatic control system are prone to occur. At the same time, during the inspection and maintenance of conventional natural gas valve groups, only one manual valve is set for pressure relief, and the valve group is disassembled after the pressure is relieved. However, for ultra-high sulfur gas fields, such as the Puguang gas field with an average hydrogen sulfide content of 15.6%, even a tiny leak can cause death, which is extremely dangerous.
[0004] Therefore, it is necessary to solve the above problems through an ultra-high sulfur wet gas boosting station-by-station process system. Utility Model Content
[0005] The purpose of the utility model is to provide an ultra-high sulfur wet gas boosting station-by-station process system to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a super-high sulfur wet gas boosting station cross-station process system, comprising an air inlet pipe for transmitting gas to a high sulfur boosting station and an air outlet pipe for discharging gas from the high sulfur boosting station, wherein the air inlet pipe and the air outlet pipe are fixedly connected to a cross-station pipeline, on which an axial flow check valve and a control valve group are installed; the cross-station pipeline is connected to a vent pipeline, on which a safety valve group is installed.
[0007] Preferably, the control valve group includes a first remote control valve and a second remote control valve, and the first remote control valve and the second remote control valve are both installed in conjunction with the cross-station pipeline; the first remote control valve is located upstream of the axial flow check valve, and the second remote control valve is located downstream of the axial flow check valve.
[0008] Preferably, a first 8-shaped blind plate and a second 8-shaped blind plate for plugging leaks are arranged between the first remote control valve and the second remote control valve; the first 8-shaped blind plate and the second 8-shaped blind plate are both installed in conjunction with the cross-station pipeline; the first 8-shaped blind plate is located downstream of the first remote control valve, and the second 8-shaped blind plate is located upstream of the second remote control valve.
[0009] Preferably, the axial flow check valve is located between the first 8-shaped blind plate and the second 8-shaped blind plate, and the connection point between the vent pipeline and the cross-station pipeline is located downstream of the axial flow check valve.
[0010] Preferably, the safety valve group includes a first safety vent valve and a second safety vent valve, and the first safety vent valve and the second safety vent valve are both installed in conjunction with the vent pipeline.
[0011] Preferably, the vent pipeline is connected to a vent flare.
[0012] Preferably, the cross-station pipeline is equipped with a first pressure display, a second pressure display and a third pressure display for displaying the air pressure in the tube; the first pressure display is located upstream of the first remote control valve, and the third pressure display is located downstream of the second remote control valve; the second pressure display is located upstream of the axial flow check valve.
[0013] Preferably, an entry emergency shut-off valve is installed on the air intake pipe, and the connection point between the cross-station pipeline and the air intake pipe is located upstream of the entry emergency shut-off valve.
[0014] Preferably, an outlet emergency shut-off valve is installed on the outlet pipe, and the connection point between the cross-station pipeline and the outlet pipe is located downstream of the outlet emergency shut-off valve.
[0015] The technical effects and advantages of the utility model are as follows: First, the utility model uses an axial flow check valve as the core equipment for crossing the station, which opens mechanically and automatically to achieve upstream and downstream connectivity and complete the crossing the station; at the same time, in response to the safety risks of ultra-high sulfur natural gas, a control valve group and a safety valve group are selected to eliminate the impact of ultra-high sulfur natural gas leakage on the lives of operators during valve group inspection and maintenance.
[0016] Second, this system does not have an automatic control system and power supply system, which reduces the impact of automatic control system failure on the cross-station process. At the same time, the overall investment is low, which reduces the overall investment of the project and achieves energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the process flow of this utility model.
[0018] In the figure: 1. First remote control valve; 2. Axial flow check valve; 3. Second remote control valve; 4. First safety vent valve; 5. Second safety vent valve; 6. First 8-shaped blind plate; 7. Second 8-shaped blind plate; 8. First pressure display; 9. Second pressure display; 10. Third pressure display; 11. Inlet emergency shut-off valve; 12. High-sulfur booster station; 13. Outlet emergency shut-off valve; 14. Vent flare; 15. Inlet pipe; 16. Outlet pipe; 17. Cross-station pipeline; 18. Vent pipeline. DETAILED DESCRIPTION
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0020] The utility model provides Figure 1 The ultra-high sulfur wet gas boosting station-bypass process system shown includes an air inlet pipe 15 for supplying air to the high sulfur wet gas boosting station 12 and an air outlet pipe 16 for discharging air from the high sulfur wet gas boosting station 12 .
[0021] The inlet pipe 15 is equipped with an inlet emergency shut-off valve 11, and the outlet pipe 16 is equipped with an outlet emergency shut-off valve 13. They are used to cut off the inlet pipe 15 and the outlet pipe 16 when a fault occurs inside the high-sulfur boosting station 12.
[0022] The inlet pipe 15 and the outlet pipe 16 are fixedly connected to the cross-station pipeline 17. The connection point between the cross-station pipeline 17 and the inlet pipe 15 is located upstream of the inlet emergency shut-off valve 11, which is used for the intake of air to the cross-station pipeline 17. The connection point between the cross-station pipeline 17 and the outlet pipe 16 is located downstream of the outlet emergency shut-off valve 13, which is used for the exhaust of air from the cross-station pipeline 17.
[0023] The cross-station pipeline 17 is equipped with an axial flow check valve 2, and the starting value of the axial flow check valve 2 is a working pressure difference ≥ 20kPa.
[0024] A control valve assembly is installed on the cross-station pipeline 17. This valve assembly is used to close the cross-station pipeline 17 when axial flow check valve 2 is being repaired. The control valve assembly includes a first remote control valve 1 and a second remote control valve 3. The axial flow check valve 2 is located between the first and second remote control valves 1 and 3. Both the first and second remote control valves 1 and 3 are assembled with the cross-station pipeline 17.
[0025] The first remote control valve 1 is located upstream of the axial flow check valve 2 to control the opening and closing of the cross-station pipeline 17 between the axial flow check valve 2 and the air inlet pipe 15. The second remote control valve 3 is located downstream of the axial flow check valve 2 to control the opening and closing of the cross-station pipeline 17 between the axial flow check valve 2 and the air outlet pipe 16.
[0026] A first and second 8-shaped blind plate 6 and 7 are installed between the first remote control valve 1 and the second remote control valve 3 to plug leaks. The first and second 8-shaped blind plates 6 and 7 are assembled with the cross-station pipeline 17. The axial flow check valve 2 is located between the first and second 8-shaped blind plates 6 and 7.
[0027] The first 8-shaped blind plate 6 is located between the axial flow check valve 2 and the first remote control valve 1, and is used to prevent gas from flowing out of the cross-station pipeline 17 when the first remote control valve 1 leaks. The second 8-shaped blind plate 7 is located between the axial flow check valve 2 and the second remote control valve 3, and is used to prevent gas from flowing out of the cross-station pipeline 17 when the second remote control valve 3 leaks.
[0028] The first pressure display 8, the second pressure display 9 and the third pressure display 10 are installed on the cross-station pipeline 17. The first pressure display 8, the second pressure display 9 and the third pressure display 10 are all pressure displays for displaying the air pressure in the pipe.
[0029] The first pressure display 8 is located between the air inlet pipe 15 and the first remote control valve 1 and is used to display the air inlet pressure. The second pressure display 9 is located between the first "8" blind plate 6 and the axial flow check valve 2 and is used to display the pressure at the air inlet end of the axial flow check valve 2. The third pressure display 10 is located between the air outlet pipe 16 and the second remote control valve 3 and is used to display the air outlet pressure.
[0030] The cross-station pipeline 17 is fixedly connected to the vent pipeline 18, which is in turn fixedly connected to the vent flare 14. The connection between the cross-station pipeline 17 and the vent pipeline 18 is located between the first and second 8-shaped blind plates 6 and 7, and is also located downstream of the axial flow check valve 2. This is used to vent the gas in the cross-station pipeline 17 between the first and second 8-shaped blind plates 6 and 7 when repairing the axial flow check valve 2.
[0031] A safety valve group is installed on the vent line 18 to ensure the safety of the vent line 18 and the cross-station pipeline 17. The safety valve group includes a first safety vent valve 4 and a second safety vent valve 5, both of which are assembled with the vent line 18.
[0032] Working Principle: Ultra-high-sulfur natural gas enters the high-sulfur boosting station 12 from the upstream gathering and transportation pipeline through the inlet pipe 15 and the inlet emergency shut-off valve 11. After pretreatment and pressurization in the high-sulfur boosting station 12, the ultra-high-sulfur natural gas is output to the downstream gathering and transportation pipeline through the outlet emergency shut-off valve 13.
[0033] When a compressor unit fails and shuts down within the booster station, or the station is shut down due to an accident, the inlet emergency shutoff valve 11 and outlet emergency shutoff valve 13 are interlocked and shut off. The upstream high-sulfur natural gas passes through the high-sulfur booster station 12 and enters the downstream gathering pipeline via the bypass pipeline 17, the first remote control valve 1, the axial flow check valve 2, and the second remote control valve 3.
[0034] This system uses a mechanical axial flow check valve 2 as the core equipment for over-station transfer. When the pressure difference before and after the axial flow check valve 2 is ≥20kPa, the axial flow check valve 2 automatically opens to transfer the upstream high-sulfur natural gas to the downstream station, preventing upstream pressure build-up and leakage of ultra-high-sulfur natural gas, eliminating risks, ensuring continuous gas supply downstream, and safe and stable operation of the downstream purification process.
[0035] The cross-station pipeline 17 is equipped with a first pressure display 8, a second pressure display 9, and a third pressure display 10, enabling remote monitoring. A pair of 8-shaped blind plates are installed behind the first remote control valve 1 and before the second remote control valve 3. These are the first 8-shaped blind plate 6 and the second 8-shaped blind plate 7, respectively. During maintenance of the axial flow check valve 2, the first and second remote control valves 1 and 3 are closed. The first and second 8-shaped blind plates 6 and 7 are manually swapped to ensure that upstream ultra-high-sulfur natural gas does not leak through the valves.
[0036] At this time, the first safety vent valve 4 and the second safety vent valve 5 are opened to release the ultra-high sulfur natural gas between the first 8-shaped blind plate 6 and the second 8-shaped blind plate 7 to the vent pipeline 18 and be processed by the vent flare 14.
[0037] A second pressure display 9 is provided between the axial flow check valve 2 and the first "8" blind plate 6. This pressure display allows for disassembly and maintenance of the axial flow check valve 2. This system ensures safety during the inspection and maintenance of the axial flow check valve 2, preventing the potential loss of life from leaks of ultra-high sulfur natural gas.
[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A super-high sulfur wet gas boosting station cross-station process system, comprising an air inlet pipe (15) for transmitting gas into a high sulfur wet gas boosting station (12) and an air outlet pipe (16) for discharging gas from the high sulfur wet gas boosting station (12), characterized in that: The air inlet pipe (15) and the air outlet pipe (16) are connected to a cross-station pipeline (17), and an axial flow check valve (2) and a control valve group are installed on the cross-station pipeline (17); the cross-station pipeline (17) is connected to a vent pipeline (18), and a safety valve group is installed on the vent pipeline (18).
2. The ultra-high sulfur wet gas boosting station-to-station process system according to claim 1, characterized in that: The control valve group comprises a first remote control valve (1) and a second remote control valve (3), wherein the first remote control valve (1) and the second remote control valve (3) are both installed in conjunction with the cross-station pipeline (17); the first remote control valve (1) is located upstream of the axial flow check valve (2), and the second remote control valve (3) is located downstream of the axial flow check valve (2).
3. The ultra-high sulfur wet gas boosting station-to-station process system according to claim 2, characterized in that: A first 8-shaped blind plate (6) and a second 8-shaped blind plate (7) for plugging leaks are provided between the first remote control valve (1) and the second remote control valve (3); the first 8-shaped blind plate (6) and the second 8-shaped blind plate (7) are both installed in conjunction with the cross-station pipeline (17); the first 8-shaped blind plate (6) is located downstream of the first remote control valve (1), and the second 8-shaped blind plate (7) is located upstream of the second remote control valve (3).
4. The ultra-high sulfur wet gas boosting station-to-station process system according to claim 3 is characterized in that: The axial flow check valve (2) is located between the first 8-shaped blind plate (6) and the second 8-shaped blind plate (7), and the connection point between the vent line (18) and the over-station line (17) is located downstream of the axial flow check valve (2).
5. The ultra-high sulfur wet gas boosting station-to-station process system according to claim 1, characterized in that: The safety valve group comprises a first safety vent valve (4) and a second safety vent valve (5), and the first safety vent valve (4) and the second safety vent valve (5) are both installed in conjunction with a vent pipeline (18).
6. The ultra-high sulfur wet gas boosting station-by-station process system according to claim 5, characterized in that: The venting pipeline (18) is connected to the venting flare (14).
7. The ultra-high sulfur wet gas boosting station-to-station process system according to claim 4, characterized in that: The cross-station pipeline (17) is equipped with a first pressure display (8), a second pressure display (9) and a third pressure display (10) for displaying the air pressure in the tube; the first pressure display (8) is located upstream of the first remote control valve (1), and the third pressure display (10) is located downstream of the second remote control valve (3); the second pressure display (9) is located upstream of the axial flow check valve (2).
8. The ultra-high sulfur wet gas boosting station-by-station process system according to claim 1, characterized in that: The air intake pipe (15) is cooperatively mounted with an inlet emergency shut-off valve (11), and the connection point between the over-station pipeline (17) and the air intake pipe (15) is located upstream of the inlet emergency shut-off valve (11).
9. The ultra-high sulfur wet gas boosting station-to-station process system according to claim 1, characterized in that: The outlet pipe (16) is cooperatively mounted with an outlet emergency shut-off valve (13), and the connection point between the over-station pipeline (17) and the outlet pipe (16) is located downstream of the outlet emergency shut-off valve (13).