Pipeline structure and fuel gas desulfurization system with same

Abstract

The utility model provides a pipeline structure and a fuel gas desulfurization system with the pipeline structure, the pipeline structure comprises: a reaction header pipe, which is used for introducing fuel gas and is provided with a desulfurization component; the first control valves are arranged on the reaction header pipe and used for controlling the on-off of the reaction header pipe, the number of the first control valves is multiple, and the multiple first control valves are arranged in the extending direction of the reaction header pipe at intervals; the control module is connected with all the first control valves, and all the first control valves are controlled to be opened or closed through the control module; the first gas inlet pipeline is communicated with the reaction header pipe and is used for introducing detection gas into the reaction header pipe; the pressure detection part is arranged on the reaction header pipe and is used for detecting the pressure in the reaction header pipe. The problems that in the prior art, a gas pipeline structure cannot be subjected to independent gas tightness detection, so that the pipeline structure needs to be shut down for maintenance, and the working efficiency of the pipeline structure is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipelines, and more specifically, to a pipeline structure and a gas desulfurization system having the same. Background Art

[0002] With the development and application of solid oxide fuel cell technology, during the power generation process, the natural gas participating in the reaction needs to enter the gas treatment unit for desulfurization treatment through a desulfurizing agent; when desulfurizing natural gas, it needs to be carried out in the desulfurization pipeline structure of the gas treatment unit.

[0003] In the existing desulfurized gas pipeline system, since the control of each valve and equipment is integrated in a circuit system, when the valve is started, the entire system will start to run, resulting in the inability to conduct a separate airtightness test on the pipeline system. During the operation, if the airtightness of the pipeline is abnormal, only the entire system can be shut down for maintenance, reducing the working efficiency of the pipeline structure. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a pipeline structure and a gas desulfurization system having the same, so as to solve the problem that the existing gas pipeline structure cannot conduct a separate airtightness test, resulting in the need for shutdown maintenance of the pipeline structure and reducing the working efficiency of the pipeline structure.

[0005] To achieve the above object, according to one aspect of the utility model, a pipeline structure is provided, including: a reaction main pipe for introducing gas, a desulfurization component is arranged on the reaction main pipe, and desulfurization treatment is carried out during the process of the gas flowing through the desulfurization component; a first control valve arranged on the reaction main pipe for controlling the on-off of the reaction main pipe, there are multiple first control valves, and the multiple first control valves are arranged at intervals along the extension direction of the reaction main pipe; a control module respectively connected to each first control valve, and respectively controlling the opening or closing of each first control valve through the control module; a first intake pipe connected to the reaction main pipe, and the first intake pipe is used for introducing a detection gas into the reaction main pipe; a pressure detection component arranged on the reaction main pipe for detecting the pressure in the reaction main pipe.

[0006] Further, the reaction main pipe further includes: a sampling pipe section, a first intake port and a second intake port are arranged on the sampling pipe section, the first intake port is connected to the first intake pipe; a second intake pipe, the second intake port is connected to the second intake pipe, and the outlet of the sampling pipe section is connected to the desulfurization component; wherein, at least one of the multiple first control valves is arranged on the second intake pipe.

[0007] Further, the pipeline structure further includes: a second control valve arranged on the first intake pipe and connected to the first intake pipe, and controlling the on-off of the first intake pipe through the second control valve.

[0008] Further, the pipeline structure further includes: a first pressure reducer, which is arranged on the first intake pipeline and communicated with the first intake pipeline, and detects that the gas flows into the reaction main pipe after passing through the first pressure reducer.

[0009] Further, there are multiple pressure detection components, and the multiple pressure detection components are arranged at intervals along the extension direction of the reaction main pipe.

[0010] Further, the reaction main pipe includes: a first connection pipe section, both ends of the first connection pipe section are respectively communicated with the sampling pipe section and the desulfurization component; a pressure detection component is arranged in the first connection pipe section; wherein, at least one of the multiple first control valves is arranged on the first connection pipe section.

[0011] Further, the pipeline structure further includes a second pressure reducer, the second pressure reducer is arranged on the reaction main pipe and communicated with the reaction main pipe, and the reaction main pipe includes: a second connection pipe section, both ends of the second connection pipe section are respectively communicated with the desulfurization component and the second pressure reducer, and a pressure detection component is arranged on the second connection pipe section; wherein, at least one of the multiple first control valves is arranged on the second connection pipe section.

[0012] Further, the pipeline structure further includes a second pressure reducer, the second pressure reducer is arranged on the reaction main pipe and communicated with the reaction main pipe, and the reaction main pipe includes: an exhaust pipe section, which is communicated with the air outlet of the second pressure reducer, and a pressure detection component is arranged on the exhaust pipe section; wherein, at least one of the multiple first control valves is arranged on the exhaust pipe section.

[0013] Further, the pipeline structure further includes: a temperature detection component, at least part of which is arranged in the reaction main pipe, there are multiple temperature detection components, and the multiple temperature detection components are arranged at intervals along the extension direction of the reaction main pipe.

[0014] According to another aspect of the present invention, a gas desulfurization system is provided, which includes a pipeline structure, and the pipeline structure is the above-mentioned pipeline structure.

[0015] Applying the technical solution of the present utility model, the pipeline structure includes a reaction main pipe, a first control valve, a control module, and a first air inlet pipe. The reaction main pipe is used to introduce fuel gas. A desulfurization component is arranged on the reaction main pipe, and the fuel gas is desulfurized during the process of flowing through the desulfurization component; the first control valve is arranged on the reaction main pipe and is used to control the on-off of the reaction main pipe. There are multiple first control valves, and the multiple first control valves are arranged at intervals along the extension direction of the reaction main pipe; the control module is respectively connected to each first control valve, and each first control valve is respectively controlled to be opened or closed through the control module; the first air inlet pipe is communicated with the reaction main pipe, and the first air inlet pipe is used to introduce a detection gas into the reaction main pipe; a pressure detection component is arranged on the reaction main pipe and is used to detect the pressure in the reaction main pipe. Such a setting can perform an airtightness detection on the reaction main pipe by using the first air inlet pipe, the control module, and the pressure detection component before the fuel gas desulfurization work is carried out on the reaction main pipe. Specifically, the control module controls each first control valve to be in an open state, the first air inlet pipe introduces an airtightness detection gas into the reaction main pipe, the pressure in the reaction main pipe is detected by using the pressure detection component, and the airtightness of the reaction main pipe is fed back by the pressure detected by the pressure detection component. In this way, the airtightness of the pipeline structure is detected before the fuel gas desulfurization, which ensures the stability of the pipeline during the fuel gas desulfurization process and improves the working energy efficiency of the pipeline structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 shows a schematic structural diagram of an embodiment of the pipeline structure according to the present utility model;

[0018] Figure 2 shows a flowchart of the airtightness detection of the pipeline structure according to the present utility model.

[0019] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0020] 1, reaction main pipe; 2, desulfurization component; 3, first control valve; 4, control module; 5, first air inlet pipe; 6, pressure detection component; 10, sampling pipe section; 11, second air inlet pipe; 7, second control valve; 8, first pressure reducer; 12, first connecting pipe section; 9, second pressure reducer; 13, second connecting pipe section; 14, exhaust pipe section; 15, temperature detection component; 16, distributor; 17, sampling branch pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in conjunction with the embodiments.

[0022] As mentioned in the background art, in the existing gas desulfurization pipeline system, since the opening and closing of each valve on the pipeline are directly controlled by the control center of the entire system, there is an electromagnetic valve in the desulfurization pipeline to control the on-off of natural gas during the operation of the gas treatment unit. Before the desulfurization cabinet runs, airtightness detection is required, and the electromagnetic valve needs to be controlled by an external power supply to open the solenoid valve to let air through. Therefore, before the pipeline system runs, the airtightness of the pipeline cannot be detected. Only during the operation of the pipeline, when an airtightness problem occurs, the entire system needs to be shut down for treatment, which greatly reduces the operating efficiency of the pipeline system. Therefore, natural gas must be desulfurized before participating in the reaction. To solve the above technical problems, the pipeline structure provided in the present application is provided with a control module 4 and a first intake pipeline 5. The first intake pipeline 5 is connected to the reaction main pipe 1 for desulfurization treatment. Each first control valve 3 on the reaction main pipe 1 is connected to a separately provided control module 4. The control module 4 separately controls the opening or closing of each first control valve 3. Then, when the first intake pipeline 5 introduces airtightness detection gas into the reaction main pipe 1, the control module 4 controls each first control valve 3 to open, and the detection gas is distributed in the reaction main pipe 1. The air pressure in the reaction main pipe 1 is fed back through the pressure detection component 6 on the reaction main pipe 1, thereby judging the airtightness of the reaction main pipe 1. In this way, the airtightness of the pipeline structure is detected before gas desulfurization, ensuring the stability of the pipeline during the gas desulfurization process and improving the working energy efficiency of the pipeline structure.

[0023] Please refer to Figure 1 and Figure 2 The present utility model provides a pipeline structure, including: a reaction main pipe 1 for introducing gas, on which a desulfurization component 2 is provided, and the gas is desulfurized during the process of flowing through the desulfurization component 2; a first control valve 3 provided on the reaction main pipe 1 for controlling the on-off of the reaction main pipe 1, and there are multiple first control valves 3, which are arranged at intervals along the extension direction of the reaction main pipe 1; a control module 4 respectively connected to each first control valve 3, and the control module 4 respectively controls the opening or closing of each first control valve 3; a first intake pipeline 5 connected to the reaction main pipe 1, and the first intake pipeline 5 is used for introducing detection gas into the reaction main pipe 1; a pressure detection component 6 provided on the reaction main pipe 1 for detecting the pressure in the reaction main pipe 1.

[0024] According to the pipeline structure provided by the present application, it includes a reaction main pipe 1, a first control valve 3, a control module 4, and a first intake pipeline 5. The reaction main pipe 1 is used for introducing fuel gas. A desulfurization component 2 is arranged on the reaction main pipe 1, and the fuel gas is desulfurized during the process of flowing through the desulfurization component 2. The first control valve 3 is arranged on the reaction main pipe 1 and is used to control the on-off of the reaction main pipe 1. There are multiple first control valves 3, and the multiple first control valves 3 are arranged at intervals along the extension direction of the reaction main pipe 1. The control module 4 is respectively connected to each first control valve 3, and each first control valve 3 is respectively controlled to be opened or closed through the control module 4. The first intake pipeline 5 is communicated with the reaction main pipe 1, and the first intake pipeline 5 is used for introducing a detection gas into the reaction main pipe 1. A pressure detection component 6 is arranged on the reaction main pipe 1 and is used to detect the pressure inside the reaction main pipe 1. Such a setting can, before the fuel gas desulfurization work of the reaction main pipe 1, use the first intake pipeline 5, the control module 4, and the pressure detection component 6 to perform an airtightness detection on the reaction main pipe 1. Specifically, the control module 4 controls each first control valve 3 to be in an open state, the first intake pipeline 5 introduces an airtightness detection gas into the reaction main pipe 1, the pressure inside the reaction main pipe 1 is detected by the pressure detection component 6, and the airtightness of the reaction main pipe 1 is fed back by the air pressure detected by the pressure detection component 6. In this way, the airtightness of the pipeline structure is detected before the fuel gas desulfurization, ensuring the stability of the pipeline during the fuel gas desulfurization process and improving the working energy efficiency of the pipeline structure.

[0025] Preferably, each first control valve 3 is a solenoid valve, the control module 4 includes an inverter, the control module 4 only controls the on-off of each first control valve 3, and is independent of the desulfurization control system; the desulfurization component 2 is a desulfurization tank.

[0026] Specifically, the reaction main pipe 1 further includes: a sampling pipe section 10, on which a first air inlet and a second air inlet are arranged, and the first air inlet is communicated with the first intake pipeline 5; a second intake pipeline 11, the second air inlet is communicated with the second intake pipeline 11, and the air outlet of the sampling pipe section 10 is communicated with the desulfurization component 2; wherein, at least one of the multiple first control valves 3 is arranged on the second intake pipeline 11. The sampling pipe section 10 is used for sampling the introduced fuel gas, and the first intake pipeline 5 is communicated with the sampling pipe section 10 to avoid the gas in the first intake pipeline 5 remaining in the second intake pipeline 11 and affecting the fuel gas intake channel.

[0027] During the specific implementation process, the pipeline structure further includes: a second control valve 7, which is arranged on the first intake pipeline 5 and is communicated with the first intake pipeline 5, and the on-off of the first intake pipeline 5 is controlled through the second control valve 7.

[0028] Further, in order to avoid the gas pressure in the reaction main pipe 1 being too high and affecting the pipe body, the pipeline structure further includes: a first pressure reducer 8, which is arranged on the first intake pipeline 5 and communicated with the first intake pipeline 5, and detects that the gas flows through the first pressure reducer 8 and then enters the reaction main pipe 1.

[0029] Preferably, there are multiple pressure detection components 6, and the multiple pressure detection components 6 are arranged at intervals along the extension direction of the reaction main pipe 1. This setting can detect the airtightness of each pipe section of the reaction main pipe 1 and improve the accuracy of airtightness detection.

[0030] In this application, the outlet of the sampling pipe section 10 is communicated with the distributor 16, and a sampling branch pipe 17 is further arranged at the outlet end of the reaction main pipe 1 for sampling the desulfurized gas.

[0031] In the specific implementation process, the reaction main pipe 1 includes: a first connection pipe section 12, and both ends of the first connection pipe section 12 are respectively communicated with the sampling pipe section 10 and the desulfurization component 2; a pressure detection component 6 is arranged in the first connection pipe section 12; wherein, at least one of the multiple first control valves 3 is arranged on the first connection pipe section 12. The pipeline structure further includes a second pressure reducer 9, and the second pressure reducer 9 is arranged on the reaction main pipe 1 and communicated with the reaction main pipe 1. The reaction main pipe 1 includes: a second connection pipe section 13, and both ends of the second connection pipe section 13 are respectively communicated with the desulfurization component 2 and the second pressure reducer 9, and a pressure detection component 6 is arranged on the second connection pipe section 13; wherein, at least one of the multiple first control valves 3 is arranged on the second connection pipe section 13. The pipeline structure further includes a second pressure reducer 9, and the second pressure reducer 9 is arranged on the reaction main pipe 1 and communicated with the reaction main pipe 1. The reaction main pipe 1 includes: an exhaust pipe section 14, which is communicated with the outlet of the second pressure reducer 9, and a pressure detection component 6 is arranged on the exhaust pipe section 14; wherein, at least one of the multiple first control valves 3 is arranged on the exhaust pipe section 14. This setting performs segmented detection on the reaction main pipe 1, and pressure detection components 6 are respectively arranged on the first connection pipe section 12, the second connection pipe section 13 and the exhaust pipe section 14, so that the position of the pipe section with insufficient airtightness can be accurately judged.

[0032] In this application, the pipeline structure further includes: a temperature detection component 15, at least part of which is arranged in the reaction main pipe 1. There are multiple temperature detection components 15, and the multiple temperature detection components 15 are arranged at intervals along the extension direction of the reaction main pipe 1.

[0033] Specifically, in the present application, during the air tightness test, according to the branch measurement, a total of four solenoid valves need to be controlled each time, including a solenoid valve of the main pipeline and three branch pipeline solenoid valves. The solenoid valve is controlled by an Amp 2-core connector. The solenoid valve end is an Amp 2-core female connector, and the air tightness detection device end is a male connector. Among them, the four solenoid valves include a main solenoid valve, a pre-decompression solenoid valve 1 before desulfurization, a post-decompression solenoid valve 2 before desulfurization, and a post-desulfurization solenoid valve 3.

[0034] In this application, if Figure 2 As shown, the gas for air tightness detection is nitrogen. Connect high-pressure nitrogen and open the valve. When the gas pipeline receives an electrical signal, the electronically controlled venting device opens, and the specified high-pressure nitrogen flows into the pipeline. At the front section of the nitrogen intake device, add a pressure detector. When the intake pressure reaches the specified pressure value, the nitrogen supply will be cut off. Connect the four solenoid valve connectors, connect the 220V power supply, and convert the 220V AC power into 24V DC power through the inverter. When the solenoid valve contacts the 24V electrical signal, the solenoid valve automatically opens, and the high-pressure nitrogen will enter the pipeline to participate in the sealing test. Sealing test process: Connect the nitrogen tank to lead out compressed nitrogen, pass through the first pressure regulating valve, hand valve, and second pressure regulating valve, and enter from the sample collection pipeline. When the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are all opened, fill the pipeline with nitrogen. After the pressure reaches 5.5Bar, cut off the nitrogen supply. Under the condition of stable pressure, ensure that the pressure reduction is not higher than 0.1Bar within 1 hour to pass. Starting from before the external natural gas enters the gas processing unit, every gas pipeline in the desulfurization system can be checked for leaks, including the desulfurization tank, various ferrule joints, various sensors, etc.

[0035] The utility model also provides a fuel gas desulfurization system, comprising a pipeline structure, and the pipeline structure is the pipeline structure of the above embodiment.

[0036] The pipeline structure of the present application, when applied to the gas desulfurization system, quickly realizes the system sealing detection and ensures the sealing during the desulfurization process. It ensures that natural gas does not leak when the gas processing unit is in operation, which not only improves the safety of use, but also reduces waste and further improves the power generation efficiency. According to the needs, when there are multiple independent desulfurization subsystems that need airtightness detection, multiple desulfurization subsystems can be detected at the same time.

[0037] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0038] According to the pipeline structure provided by the present application, it includes a reaction main pipe 1, a first control valve 3, a control module 4, and a first intake pipeline 5. The reaction main pipe 1 is used to introduce fuel gas. A desulfurization component 2 is provided on the reaction main pipe 1, and the fuel gas is desulfurized during the process of flowing through the desulfurization component 2. The first control valve 3 is arranged on the reaction main pipe 1 and is used to control the on-off of the reaction main pipe 1. There are multiple first control valves 3, and the multiple first control valves 3 are arranged at intervals along the extension direction of the reaction main pipe 1. The control module 4 is respectively connected to each first control valve 3, and each first control valve 3 is respectively controlled to be opened or closed through the control module 4. The first intake pipeline 5 is communicated with the reaction main pipe 1, and the first intake pipeline 5 is used to introduce a detection gas into the reaction main pipe 1. A pressure detection component 6 is arranged on the reaction main pipe 1 and is used to detect the pressure inside the reaction main pipe 1. Such a setting can, before the fuel gas desulfurization work is carried out in the reaction main pipe 1, use the first intake pipeline 5, the control module 4, and the pressure detection component 6 to detect the airtightness of the reaction main pipe 1. Specifically, the control module 4 controls each first control valve 3 to be in an open state, the first intake pipeline 5 introduces an airtightness detection gas into the reaction main pipe 1, the pressure inside the reaction main pipe 1 is detected by the pressure detection component 6, and the airtightness of the reaction main pipe 1 is fed back by the air pressure detected by the pressure detection component 6. In this way, the airtightness of the pipeline structure is detected before the fuel gas desulfurization, ensuring the stability of the pipeline during the fuel gas desulfurization process and improving the working energy efficiency of the pipeline structure.

[0039] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline structure, characterized in that: include: A reaction main pipe (1) is used to introduce fuel gas, and a desulfurization component (2) is arranged on the reaction main pipe (1). The fuel gas is desulfurized during the process of flowing through the desulfurization component (2); a first control valve (3), arranged on the reaction main pipe (1) and used for controlling the on and off of the reaction main pipe (1); the first control valve (3) is provided in plurality, and the plurality of first control valves (3) are arranged at intervals along the extension direction of the reaction main pipe (1); A control module (4) connected to each of the first control valves (3) respectively, and controlling the opening or closing of each of the first control valves (3) respectively through the control module (4); A first air inlet pipeline (5) is connected to the reaction main pipe (1), and the first air inlet pipeline (5) is used to introduce the detection gas into the reaction main pipe (1); A pressure detection component (6) is arranged on the reaction main pipe (1) and is used to detect the pressure in the reaction main pipe (1).

2. The pipeline structure according to claim 1, characterized in that: The reaction main pipe (1) further comprises: A sampling pipe section (10), wherein the sampling pipe section (10) is provided with a first air inlet and a second air inlet, wherein the first air inlet is in communication with the first air inlet pipeline (5); A second air inlet pipeline (11), wherein the second air inlet is connected to the second air inlet pipeline (11), and the air outlet of the sampling pipe section (10) is connected to the desulfurization component (2); At least one of the plurality of first control valves (3) is arranged on the second air intake pipeline (11).

3. The pipeline structure according to claim 1, characterized in that: The pipeline structure also includes: A second control valve (7) is arranged on the first air intake pipeline (5) and is in communication with the first air intake pipeline (5), and the on-off of the first air intake pipeline (5) is controlled by the second control valve (7).

4. The pipeline structure according to claim 1, characterized in that: The pipeline structure also includes: A first pressure reducer (8) is arranged on the first air inlet pipeline (5) and is in communication with the first air inlet pipeline (5); the detection gas flows through the first pressure reducer (8) and then enters the reaction main pipe (1).

5. The pipeline structure according to claim 1, characterized in that: There are a plurality of pressure detection components (6), and the plurality of pressure detection components (6) are arranged at intervals along the extension direction of the reaction main tube (1).

6. The pipeline structure according to claim 2, characterized in that: The reaction main pipe (1) comprises: A first connecting pipe section (12), wherein two ends of the first connecting pipe section (12) are respectively connected to the sampling pipe section (10) and the desulfurization component (2); The pressure detection component (6) is arranged in the first connecting pipe section (12); wherein at least one of the plurality of first control valves (3) is arranged on the first connecting pipe section (12).

7. The pipeline structure according to claim 1, characterized in that: The pipeline structure further comprises a second pressure reducer (9), which is arranged on the reaction main pipe (1) and communicated with the reaction main pipe (1). The reaction main pipe (1) comprises: a second connecting pipe section (13), the two ends of which are respectively connected to the desulfurization component (2) and the second pressure reducer (9), and the pressure detection component (6) is provided on the second connecting pipe section (13); At least one of the plurality of first control valves (3) is arranged on the second connecting pipe section (13).

8. The pipeline structure according to claim 1, characterized in that: The pipeline structure further comprises a second pressure reducer (9), which is arranged on the reaction main pipe (1) and is in communication with the reaction main pipe (1). The reaction main pipe (1) comprises: an exhaust pipe section (14) connected to the air outlet of the second pressure reducer (9), and the pressure detection component (6) is provided on the exhaust pipe section (14); Wherein, at least one of the plurality of first control valves (3) is arranged on the exhaust pipe section (14).

9. The pipeline structure according to claim 1, characterized in that: The pipeline structure also includes: A temperature detection component (15) is at least partially disposed in the reaction main tube (1), and there are a plurality of temperature detection components (15), which are spaced apart along the extension direction of the reaction main tube (1).

10. A gas desulfurization system, comprising a pipeline structure, characterized in that: The pipeline structure is the pipeline structure according to any one of claims 1 to 9.

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