Hydrogen sulfide pipeline sealing device

Abstract

The utility model relates to the technical field of hydrogen sulfide pipeline sealing devices, in particular to a hydrogen sulfide pipeline sealing device which comprises an air inlet pipe, an air guide pipe, a stop valve, a connecting pipe, a self-operated pressure reducing valve, a nitrogen pipe, a connecting line, a controller, a hydrogen sulfide detection probe, an air pump and a sulfur production air blower fixedly installed on the air inlet pipe. The end of the air guide pipe extends into the air inlet pipe and is fixedly connected with the air inlet pipe, a three-way hole is formed in the end of the air guide pipe, the stop valve is fixedly installed at the exhaust end of the air guide pipe, the connecting pipe is fixedly installed at the air inlet end of the stop valve, and the self-operated pressure reducing valve is fixedly installed at the end of the connecting pipe. The nitrogen pipe is fixedly installed at the gas inlet end of the self-operated pressure reducing valve, the gas pump is fixedly installed at the end of the nitrogen pipe, and the hydrogen sulfide detection probe is fixedly installed in the gas inlet pipe. According to the device disclosed by the utility model, the self-operated pressure reducing valve is used for setting nitrogen to normal operation pressure of the sulfur production blower and introducing the nitrogen into the gas inlet pipe to form a positive pressure barrier, so that hydrogen sulfide is prevented from leaking through nitrogen sealing.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen sulfide pipeline sealing devices, and more specifically, to a hydrogen sulfide pipeline sealing device. Background Technology

[0002] During the operation of the sulfur recovery unit, facing the problem of low concentration of acidic gas to be treated, the Rolls sulfur production unit adopts a pure oxygen air distribution mode, which improves the efficiency of sulfur recovery. In addition, the unit is equipped with air pipelines to provide the necessary air supply for the ignition and heating process, ensuring smooth start-up. During unit shutdown, the air pipelines are used for fuel gas sulfur blowing operations. Although the air pipelines do not directly participate in the production process, as an important backup facility, they are always ready to deal with emergencies, providing a solid guarantee for the safe and stable operation of the unit.

[0003] However, since both the regulating valves and manual valves on the pipeline are butterfly valves, there is a risk of problems caused by valves not closing tightly, which can lead to acidic gas back-permeating to the blower inlet and causing hydrogen sulfide leakage. To address this, we propose a hydrogen sulfide pipeline sealing device. Utility Model Content

[0004] This utility model proposes a hydrogen sulfide pipeline sealing device, which solves the technical problem that the regulating valve and manual valve on the pipeline are both butterfly valves, which cause problems due to valves not closing tightly, resulting in acid gas back-permeating to the fan inlet and causing the risk of hydrogen sulfide leakage.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydrogen sulfide pipeline sealing device, comprising an inlet pipe, a guide pipe, a shut-off valve, a connecting pipe, a self-regulating pressure reducing valve, a nitrogen pipe, a connecting wire, a controller, a hydrogen sulfide detection probe, an air pump, and a sulfur-generating blower fixedly installed on the inlet pipe. The end of the guide pipe extends into the inlet pipe and is fixedly connected thereto. A three-way hole is provided at the end of the guide pipe. The shut-off valve is fixedly installed at the exhaust end of the guide pipe. The connecting pipe is fixedly installed at the inlet end of the shut-off valve. The self-regulating pressure reducing valve is fixedly installed at the end of the connecting pipe. The nitrogen pipe is fixedly installed at the inlet end of the self-regulating pressure reducing valve. The air pump is fixedly installed at the end of the nitrogen pipe. The hydrogen sulfide detection probe is fixedly installed inside the inlet pipe. The end of the connecting wire is fixedly connected to the hydrogen sulfide detection probe. The controller is installed on the shut-off valve and is fixedly connected to the connecting wire.

[0006] Preferably, a mounting plate is fixedly connected to the outer wall of the shut-off valve, and the outer wall of the mounting plate is fixedly connected to the controller.

[0007] Preferably, a connecting disc is fixedly connected to the end of the self-operated pressure reducing valve, and a flange is fixedly connected to the outer wall of the nitrogen pipe.

[0008] Preferably, a plurality of bolts are inserted into the inner wall of the flange, and nuts are threaded onto the outer wall of the bolts.

[0009] Preferably, the end of the self-operated pressure reducing valve extends into the connecting plate to form a protrusion, a first mounting groove is formed between the nitrogen pipe and the flange, a first sealing gasket is fitted on the inner wall of the first mounting groove, and the protrusion is pressed into contact with the first sealing gasket.

[0010] Preferably, a pressure groove is formed between the self-operated pressure reducing valve and the connecting plate, a second mounting groove is provided on the outer wall of the flange, and a second sealing gasket is fitted on the inner wall of the second mounting groove.

[0011] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0012] 1. The sulfur-producing blower supplies air to the sulfur-producing combustion furnace through the air inlet pipe. The hydrogen sulfide detection probe detects the gas in the air inlet pipe. When internal leakage of the valve is detected, the hydrogen sulfide detection probe detects hydrogen sulfide gas. The controller controls the shut-off valve and the air pump to operate. The air pump delivers low-pressure nitrogen to the self-regulating pressure reducing valve. The self-regulating pressure reducing valve sets the nitrogen to the normal operating pressure of the sulfur-producing blower and introduces it into the air inlet pipe, forming a positive pressure barrier, thereby preventing hydrogen sulfide leakage through nitrogen sealing.

[0013] 2. The first sealing gasket can improve the sealing between structures. At the same time, the installation position of the connecting plate and flange can prevent the convex part from excessively squeezing the first sealing gasket during installation, which would cause damage to the first sealing gasket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the installation structure of the air guide tube of this utility model;

[0016] Figure 3 This is a schematic diagram of the installation structure of the shut-off valve of this utility model;

[0017] Figure 4 This is a schematic diagram of a partially disassembled structure of the present invention.

[0018] In the diagram: 1. Inlet pipe; 2. Sulfur-producing blower; 3. Air guide pipe; 4. T-hole; 5. Connecting pipe; 6. Shut-off valve; 7. Mounting plate; 8. Controller; 9. Connecting wire; 10. Hydrogen sulfide detection probe; 11. Nitrogen pipe; 12. Self-regulating pressure reducing valve; 13. Air pump; 14. Flange; 15. First mounting groove; 16. Second mounting groove; 17. First sealing gasket; 18. Second sealing gasket; 19. Connecting plate; 20. Pressure groove; 21. Protrusion; 22. Bolt; 23. Nut. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] In existing hydrogen sulfide pipeline sealing devices, both the regulating valves and manual valves on the pipeline are butterfly valves. This presents a risk of leaks due to valves not closing tightly, causing acidic gas to backflow into the blower inlet. Therefore, the following device is proposed:

[0021] like Figures 1-3 As shown, a hydrogen sulfide pipeline sealing device includes an inlet pipe 1, a guide pipe 3, a shut-off valve 6, a connecting pipe 5, a self-regulating pressure reducing valve 12, a nitrogen pipe 11, a connecting wire 9, a controller 8, a hydrogen sulfide detection probe 10, an air pump 13, and a sulfur-generating blower 2 fixedly installed on the inlet pipe 1. The end of the guide pipe 3 extends into the inlet pipe 1 and is fixedly connected thereto. A three-way hole 4 is opened at the end of the guide pipe 3. The shut-off valve 6 is fixedly installed at the exhaust end of the guide pipe 3. The connecting pipe 5 is fixedly installed at the inlet end of the shut-off valve 6. The self-regulating pressure reducing valve 12 is fixedly installed at the end of the connecting pipe 5. The nitrogen pipe 11 is fixedly installed at the inlet end of the self-regulating pressure reducing valve 12. The air pump... The gas pump 13 is fixedly installed at the end of the nitrogen pipe 11, the hydrogen sulfide detection probe 10 is fixedly installed inside the inlet pipe 1, the end of the connecting line 9 is fixedly connected to the hydrogen sulfide detection probe 10, and the controller 8 is installed on the shut-off valve 6 and fixedly connected to the connecting line 9. When internal leakage occurs in the valve, the hydrogen sulfide detection probe 10 detects hydrogen sulfide gas, and the controller 8 controls the shut-off valve 6 and the gas pump 13 to operate. The gas pump 13 delivers low-pressure nitrogen to the self-regulating pressure reducing valve 12. The self-regulating pressure reducing valve 12 sets the nitrogen to the normal operating pressure of the sulfur-making blower 2 and introduces it into the inlet pipe 1 to form a positive pressure barrier, thereby preventing hydrogen sulfide leakage through nitrogen sealing.

[0022] like Figure 3As shown, a mounting plate 7 is fixedly connected to the outer wall of the shut-off valve 6, and the outer wall of the mounting plate 7 is fixedly connected to the controller 8. The controller 8 can process the detection results of the hydrogen sulfide detection probe 10 and control the start and stop of the shut-off valve 6 and the self-operated pressure reducing valve 12. The control method of the controller 8 is the prior art, and will not be described in detail here.

[0023] like Figure 4 As shown, a connecting plate 19 is fixedly connected to the end of the self-operated pressure reducing valve 12, and a flange 14 is fixedly connected to the outer wall of the nitrogen pipe 11. Multiple bolts 22 are inserted into the inner wall of the flange 14, and nuts 23 are threaded onto the outer wall of the bolts 22. The flange 14 is fixed to the connecting plate 19 by multiple bolts 22, thereby improving the stability and firmness of the structural connection.

[0024] like Figure 4 As shown, the end of the self-operated pressure reducing valve 12 extends into the connecting plate 19 to form a protrusion 21. A first mounting groove 15 is formed between the nitrogen pipe 11 and the flange 14. A first sealing gasket 17 is fitted on the inner wall of the first mounting groove 15. The protrusion 21 and the first sealing gasket 17 are in pressure contact. The first sealing gasket 17 can improve the sealing between the structures. At the same time, the installation position of the connecting plate 19 and the flange 14 can avoid the protrusion 21 from excessively squeezing the first sealing gasket 17 during installation, which would cause damage to the first sealing gasket 17.

[0025] like Figure 4 As shown, a pressure groove 20 is formed between the self-operated pressure reducing valve 12 and the connecting plate 19. A second mounting groove 16 is provided on the outer wall of the flange 14, and a second sealing gasket 18 is fitted on the inner wall of the second mounting groove 16. The second sealing gasket 18 can further improve the sealing between the structures.

[0026] Working principle: The sulfur-producing blower 2 supplies air to the sulfur-producing combustion furnace through the air inlet pipe 1. The hydrogen sulfide detection probe 10 detects the gas in the air inlet pipe 1. When internal leakage occurs in the valve, the hydrogen sulfide detection probe 10 detects hydrogen sulfide gas. The controller 8 controls the shut-off valve 6 and the air pump 13 to operate. The air pump 13 delivers low-pressure nitrogen to the self-regulating pressure reducing valve 12. The self-regulating pressure reducing valve 12 sets the nitrogen to the normal operating pressure of the sulfur-producing blower 2 and introduces it into the air inlet pipe 1, forming a positive pressure barrier, thereby preventing hydrogen sulfide leakage through nitrogen sealing.

[0027] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen sulfide pipeline sealing device, characterized in that, include: An air inlet pipe (1) and a sulfur-making blower (2) fixedly installed on the air inlet pipe (1); An air guide tube (3) is provided, the end of which extends into the air inlet tube (1) and is fixedly connected thereto. A three-way hole (4) is provided at the end of the air guide tube (3). The shut-off valve (6) is fixedly installed at the exhaust end of the air guide pipe (3); Connecting pipe (5), which is fixedly installed at the air inlet end of the shut-off valve (6); Self-operated pressure reducing valve (12), which is fixedly installed at the end of the connecting pipe (5); Nitrogen pipe (11), which is fixedly installed at the inlet end of self-regulating pressure reducing valve (12); An air pump (13) is fixedly installed at the end of a nitrogen pipe (11); Hydrogen sulfide detection probe (10), which is fixedly installed inside the air inlet pipe (1); A connecting wire (9) is provided, the end of which is fixedly connected to a hydrogen sulfide detection probe (10); A controller (8) is mounted on a shut-off valve (6) and is fixedly connected to a connecting line (9).

2. The hydrogen sulfide pipeline sealing device according to claim 1, characterized in that: The outer wall of the shut-off valve (6) is fixedly connected to the mounting plate (7), and the outer wall of the mounting plate (7) is fixedly connected to the controller (8).

3. The hydrogen sulfide pipeline sealing device according to claim 2, characterized in that: The self-operated pressure reducing valve (12) is fixedly connected to a connecting plate (19) at its end, and a flange (14) is fixedly connected to the outer wall of the nitrogen pipe (11).

4. The hydrogen sulfide pipeline sealing device according to claim 3, characterized in that: The flange (14) has multiple bolts (22) inserted into its inner wall, and the outer wall of the bolts (22) is threaded with nuts (23).

5. The hydrogen sulfide pipeline sealing device according to claim 4, characterized in that: The end of the self-operated pressure reducing valve (12) extends into the connecting plate (19) to form a protrusion (21). A first mounting groove (15) is formed between the nitrogen pipe (11) and the flange (14). A first sealing gasket (17) is fitted on the inner wall of the first mounting groove (15). The protrusion (21) and the first sealing gasket (17) are pressed together.

6. The hydrogen sulfide pipeline sealing device according to claim 5, characterized in that: A pressure groove (20) is formed between the self-operated pressure reducing valve (12) and the connecting plate (19). A second mounting groove (16) is provided on the outer wall of the flange (14), and a second sealing gasket (18) is fitted on the inner wall of the second mounting groove (16).

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