Spring type sulfur sealing device

Abstract

The utility model relates to sulfur recovery equipment technical field, specifically a spring formula sulfur seal device, including inner cylinder, the inner cylinder is connected liquid sulfur entrance inner connector and liquid sulfur export inner connector respectively, the inner cylinder inside is provided with the plunger, and the inner cylinder inside fixedly connected with plunger seat, plunger seat sets up in the lower part of plunger, and the plunger blocks liquid sulfur export inner connector, and the inner cylinder top sets up cylinder top flange cover, and the cylinder top flange cover slidingly connects with the limiting rod, and the limiting rod penetrates cylinder top flange cover and extends into the inside of inner cylinder, the limiting rod is connected with plunger, and the spring is movably sleeved outside the limiting rod. In the utility model, when the plunger lower part cavity pressure increases, the plunger and spring, limiting rod etc. move upward under the action of pressure, when the spring moves to the inner cylinder top, the plunger extrudes the spring, when reaches certain setting pressure value, the plunger bottom is higher than liquid sulfur export inner connector, makes liquid sulfur flow.

Description

Technical Field

[0001] This utility model relates to the technical field of sulfur recovery equipment, specifically a spring-type sulfur sealing device. Background Technology

[0002] In sulfur recovery units in the petrochemical and coal chemical industries both domestically and internationally, the commonly used process involves condensing and cooling the gaseous sulfur produced in the sulfur production section. At the tail end of the condenser, the gaseous sulfur is converted into liquid sulfur and separated from the process gas. The process gas enters the subsequent process from the upper part of the condenser, while the liquid sulfur enters the sulfur sealing tank from the lower part. The purpose of the sulfur sealing tank is to prevent the process gas from entering the sulfur storage facilities. The pressure of the process gas in the system must be less than the static pressure difference of the sulfur sealing tank to achieve the separation of process gas and liquid sulfur, thus preventing the process gas from entering the sulfur storage facilities and ensuring the normal operation of the unit.

[0003] During operation, the condenser cooler typically experiences a pressure of ≥50 kPa. Traditional sulfur sealing equipment mostly utilizes the pressure created by liquid sulfur at a certain height to counteract the internal pressure and prevent process gases from entering the sulfur storage facility. Therefore, the liquid sulfur sealing height must be ≥2.8 m, and the sulfur sealing tank (such as...) Figure 3 (As shown) The equipment height is generally ≥4.0m. Liquid sulfur needs to flow by gravity from the condenser into the sulfur sealing tank. When the sulfur sealing tank is installed on the ground, a reinforced concrete tank pool is required to house it for easy maintenance. Harmful gases can easily accumulate in the tank pool, posing a safety hazard and hindering the safe and stable production of the unit. Necessary safety measures must be taken during equipment maintenance, and the investment is increased. When the sulfur sealing tank is installed on a frame structure, the entire frame needs to be raised by at least 1.5m, significantly increasing the investment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a spring-type sulfur sealing device with high safety performance, saving investment and facilitating equipment maintenance.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A spring-loaded sulfur sealing device includes an inner cylinder, which is connected to an inner pipe for liquid sulfur inlet and an inner pipe for liquid sulfur outlet. A plunger is installed inside the inner cylinder, and a plunger seat is fixedly connected inside the inner cylinder. The plunger seat is located at the lower part of the plunger, and the plunger blocks the inner pipe for liquid sulfur outlet. A top flange cover is installed at the top of the inner cylinder, and a limit rod is slidably connected to the top flange cover. The limit rod passes through the top flange cover and extends into the interior of the inner cylinder. The limit rod is connected to the plunger, and a spring is movably sleeved on the outside of the limit rod, with the spring located between the top flange cover and the plunger.

[0007] In the above structure, when the pressure in the lower cavity of the plunger increases, the plunger, spring, limit rod, etc., move upward under the action of pressure. When the spring moves to the top of the inner cylinder, the plunger squeezes the spring. When a certain set pressure value is reached, the bottom of the plunger is higher than the inner pipe of the liquid sulfur outlet, allowing the liquid sulfur to flow out. When the pressure does not reach the set value, the plunger blocks the inner pipe of the liquid sulfur outlet, ensuring that the process gas and liquid sulfur cannot flow out, thus achieving the purpose of sulfur sealing.

[0008] An outer cylinder is provided outside the inner cylinder. A liquid sulfur inlet jacket is provided outside the liquid sulfur inlet pipe, and a liquid sulfur outlet jacket is provided outside the liquid sulfur outlet pipe. Both the liquid sulfur inlet jacket and the liquid sulfur outlet jacket are connected to the outer cylinder. The liquid sulfur outlet jacket is connected to the steam inlet pipe, and the outer cylinder is connected to the condensate outlet pipe.

[0009] The inner and outer cylinders adopt a jacket structure to keep the liquid sulfur warm and prevent the liquid sulfur temperature from dropping, keeping the liquid sulfur in a liquid state at all times, ensuring the normal operation of the liquid sulfur, and preventing sulfur seal blockage caused by the solidification of liquid sulfur.

[0010] For ease of maintenance and unblocking, the inner and outer cylinders are equipped with top jacket flanges, which are located below the top flange cover. The inner and outer cylinders are also equipped with bottom flange covers and bottom jacket flanges. For easy installation and pipeline connection, the liquid sulfur inlet inner pipe and liquid sulfur inlet jacket pipe are connected to the liquid sulfur inlet jacket flange; the liquid sulfur outlet inner pipe and liquid sulfur outlet jacket pipe are connected to the liquid sulfur outlet jacket flange; the steam inlet pipe is connected to the steam inlet flange; and the condensate outlet pipe is connected to the condensate outlet flange.

[0011] There are two ways to connect the limit rod and the plunger:

[0012] First, the limiting rod is installed through the plunger, and the limiting rod is threaded with two sets of nuts, each of which is fitted with a washer. The two sets of nuts and washers are respectively located at both ends of the plunger.

[0013] At this time, a first waterproof cap is provided on the upper part of the flange cover at the top of the cylinder, and the first waterproof cap is slidably sleeved on the outside of the limiting rod.

[0014] Secondly, the plunger has an internal threaded hole at its top, and the limiting rod is threadedly connected to the internal threaded hole. The limiting rod is threadedly connected to a nut, and a washer is fitted to the nut. The nut and washer are located on the upper part of the flange cover at the top of the cylinder.

[0015] At this time, a second waterproof cap is provided on the upper part of the flange cover at the top of the cylinder, and the second waterproof cap covers the top of the limiting rod.

[0016] The limiting rod is externally slidably connected to two perforated pads, which are respectively located at the upper and lower ends of the spring.

[0017] The height of the spring-loaded sulfur sealing device is 0.4 to 1.2 m.

[0018] The beneficial effects achieved by this utility model are:

[0019] The spring-type sulfur sealing device of this utility model has a simple structure. It is equipped with a plunger, spring and limit rod inside the inner cylinder. When the pressure does not reach the set value, the plunger blocks the liquid sulfur outlet and prevents the process gas from entering the liquid sulfur storage facility, thus achieving sulfur sealing. Only when a certain set pressure value is reached can the bottom of the plunger be pushed out of the inner pipe of the liquid sulfur outlet, and the liquid sulfur flows out from the inner pipe of the liquid sulfur outlet and then flows into the storage facility.

[0020] This utility model has a compact structure, with the total height of the spring-type sulfur sealing device controlled at around 0.8m, and the longest including the external pipe nozzle not exceeding 1.2m. It is lightweight, occupies a very small area, and is very convenient to use and maintain. The spring-type sulfur sealing device can be directly installed on the ground or on a frame, eliminating the need for sulfur sealing tanks and reducing the height of related equipment foundations. If a frame layout is adopted, the overall height of the frame can be reduced due to the compact size of the spring-type sulfur sealing device, thereby reducing the construction cost of the device.

[0021] This utility model of spring-type sulfur sealing device uses a jacket structure to heat and insulate liquid sulfur, preventing the liquid sulfur temperature from dropping and keeping the liquid sulfur in a liquid state at all times. This ensures the normal operation of the liquid sulfur and prevents the sulfur seal from being blocked due to the solidification of liquid sulfur.

[0022] This utility model of spring-type sulfur sealing device is easy to unclog and simple to maintain. The top and bottom are bolted flange covers, which are open from top to bottom. It can be used for regular inspection, or in case of blockage, the flange cover can be opened for unblocking (under the premise of ensuring safety). Unblocking can be completed in a very short time, keeping the liquid sulfur flowing smoothly and not affecting the normal operation of the device.

[0023] The spring-loaded sulfur sealing device is compact, has low overall manufacturing cost, and is flexible in layout. Multiple units can be manufactured and installed, connected to the bypass, to achieve quick switching and unblocking without shutting down the furnace, thus ensuring the normal operation of the device.

[0024] The spring-type sulfur sealing device achieves the same process effect while saving investment. The equipment is very convenient to maintain and operate, and meets the requirements of long-cycle production. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0027] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0028] Figure 3 It is a sulfur-sealed tank structure in existing technology.

[0029] In the diagram: 1. Inner cylinder; 2. Outer cylinder; 3. Bottom jacketed flange of cylinder; 4. Bottom flange cover of cylinder; 5. Top jacketed flange of cylinder; 6. Top flange cover of cylinder; 7. Liquid sulfur inlet inner pipe; 8. Liquid sulfur inlet jacketed pipe; 9. Liquid sulfur inlet jacketed flange; 10. Liquid sulfur outlet inner pipe; 11. Liquid sulfur outlet jacketed pipe; 12. Liquid sulfur outlet jacketed flange; 13. Steam inlet pipe; 14. Steam inlet flange; 15. Condensate outlet pipe; 16. Condensate outlet flange; 17. Plunger seat; 18. Plunger; 19. Spring; 20. Limiting rod; 21. Perforated gasket; 22. First waterproof cap; 23. Nut; 24. Second waterproof cap. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] Example 1:

[0032] like Figure 1 As shown, a spring-loaded sulfur sealing device includes an inner cylinder 1, which is connected to a liquid sulfur inlet inner pipe 7 and a liquid sulfur outlet inner pipe 10. An outer cylinder 2 is provided outside the inner cylinder 1. A liquid sulfur inlet jacket pipe 8 is provided outside the liquid sulfur inlet inner pipe 7, and a liquid sulfur outlet jacket pipe 11 is provided outside the liquid sulfur outlet inner pipe 10. Both the liquid sulfur inlet jacket pipe 8 and the liquid sulfur outlet jacket pipe 11 are connected to the outer cylinder 2. The liquid sulfur outlet jacket pipe 11 is connected to a steam inlet pipe 13, and the outer cylinder 2 is connected to a condensate outlet pipe 15.

[0033] For ease of maintenance and unblocking, a top jacket flange 5 is provided at the top of the inner cylinder 1 and the outer cylinder 2. The top jacket flange 5 is located below the top flange cover 6. A bottom flange cover 4 and a bottom jacket flange 3 are provided at the bottom of the inner cylinder 1 and the outer cylinder 2. For ease of installation and pipeline connection, the liquid sulfur inlet inner pipe 7 and the liquid sulfur inlet jacket pipe 8 are connected to the liquid sulfur inlet jacket flange 9. The liquid sulfur outlet inner pipe 10 and the liquid sulfur outlet jacket pipe 11 are connected to the liquid sulfur outlet jacket flange 12. The steam inlet pipe 13 is connected to the steam inlet flange 14. The condensate outlet pipe 15 is connected to the condensate outlet flange 16.

[0034] The inner cylinder 1 is equipped with a plunger 18, and a plunger seat 17 is located at the lower part of the plunger 18. The plunger 18 seals the liquid sulfur outlet inlet pipe 10. The top of the inner cylinder 1 is equipped with a top flange cover 6. The top flange cover 6 is slidably connected to a limit rod 20. The limit rod 20 passes through the top flange cover 6 and extends into the interior of the inner cylinder 1. The limit rod 20 is connected to the plunger 18. A spring 19 is movably sleeved on the outside of the limit rod 20. The spring 19 is located between the top flange cover 6 and the plunger 18.

[0035] The plunger 18 and spring 19 are connected as a whole and work together through the limiting rod 20. When the pressure in the lower cavity of the plunger 18 increases, the plunger 18, spring 19, limiting rod 20 and other components move upward under the pressure. When the spring 19 moves to the top jacket flange 5 of the cylinder, the plunger 18 begins to squeeze the spring 19. When a certain set pressure value is reached, the bottom of the plunger 18 is higher than the liquid sulfur outlet inner pipe 10, so that liquid sulfur flows out from the inner cylinder 1 to the liquid sulfur outlet inner pipe 10. When the pressure does not reach the set value, the plunger 18 blocks the liquid sulfur outlet inner pipe 10, ensuring that the process gas and liquid sulfur cannot flow out, thus achieving the purpose of sulfur sealing.

[0036] The limiting rod 20 is installed through the plunger 18. The limiting rod 20 is threaded with two sets of nuts 23. Each nut 23 is fitted with a washer. The two sets of nuts 23 and the washer are respectively installed at both ends of the plunger 18, thereby fixing the plunger 18 on the limiting rod 20.

[0037] The inner cylinder 1 is fixedly connected to a plunger seat 17 so as to support the plunger 18 and spring 19 and other components when the pressure does not reach the set value.

[0038] The limiting rod 20 is externally slidably connected to two perforated pads 21, which are respectively disposed at the upper and lower ends of the spring 19. The perforated pads 21 provide support when the ends of the spring 19 are compressed.

[0039] A first waterproof cap 22 is provided on the upper part of the flange cover 6 at the top of the cylinder. The first waterproof cap 22 is slidably sleeved on the outside of the limiting rod 20 to prevent rainwater and other substances from entering the inner cylinder 1.

[0040] The height of the spring-loaded sulfur sealing device is 0.7 to 0.9 m.

[0041] Example 2:

[0042] like Figure 2 As shown, this embodiment is basically the same as Embodiment 1, except that the top of the plunger 18 has an internal threaded hole, and the limiting rod 20 is threadedly connected to the internal threaded hole. The plunger 18 and the limiting rod 20 are directly connected by a threaded connection.

[0043] The limiting rod 20 is threadedly connected to a nut 23, and a washer is fitted onto the nut 23. The nut 23 and the washer are located on the upper part of the flange cover 6 at the top of the cylinder. The nut 23 and the washer allow adjustment of the initial position of the limiting rod 20 and the spring 19, thereby setting the initial pressure of the spring 19 to match the pressure value of the single sulfur sealing device with the upstream system.

[0044] Based on this, a second waterproof cap 24 is provided on the upper part of the flange cover 6 at the top of the cylinder. The second waterproof cap 24 covers the top of the limiting rod 20 to prevent rainwater and other substances from entering the inner cylinder 1.

Claims

1. A spring-type sulfur seal device characterized by, The device includes an inner cylinder (1), which is connected to a liquid sulfur inlet pipe (7) and a liquid sulfur outlet pipe (10). A plunger (18) is installed inside the inner cylinder (1), and a plunger seat (17) is fixedly connected inside the inner cylinder (1). The plunger seat (17) is located at the lower part of the plunger (18), and the plunger (18) blocks the liquid sulfur outlet pipe (10). A top flange cover (6) is installed on the top of the inner cylinder (1), and a limit rod (20) is slidably connected to the top flange cover (6). The limit rod (20) passes through the top flange cover (6) and extends into the interior of the inner cylinder (1). The limit rod (20) is connected to the plunger (18), and a spring (19) is movably sleeved on the outside of the limit rod (20). The spring (19) is located between the top flange cover (6) and the plunger (18).

2. The spring seal device of claim 1, wherein The inner cylinder (1) is provided with an outer cylinder (2), the liquid sulfur inlet inner pipe (7) is provided with a liquid sulfur inlet jacket pipe (8), the liquid sulfur outlet inner pipe (10) is provided with a liquid sulfur outlet jacket pipe (11), the liquid sulfur inlet jacket pipe (8) and the liquid sulfur outlet jacket pipe (11) are both connected to the outer cylinder (2), the liquid sulfur outlet jacket pipe (11) is connected to the steam inlet pipe (13), and the outer cylinder (2) is connected to the condensate outlet pipe (15).

3. The spring seal device of claim 2, wherein, The inner cylinder (1) and outer cylinder (2) are provided with a top jacket flange (5), which is located below the top flange cover (6). The inner cylinder (1) and outer cylinder (2) are provided with a bottom flange cover (4) and a bottom jacket flange (3). The liquid sulfur inlet pipe (7) and liquid sulfur inlet jacket pipe (8) are connected to the liquid sulfur inlet jacket flange (9). The liquid sulfur outlet pipe (10) and liquid sulfur outlet jacket pipe (11) are connected to the liquid sulfur outlet jacket flange (12). The steam inlet pipe (13) is connected to the steam inlet flange (14). The condensate outlet pipe (15) is connected to the condensate outlet flange (16).

4. The spring seal device of claim 1, wherein, The limiting rod (20) is set through the plunger (18). The limiting rod (20) is threaded with two sets of nuts (23). Each nut (23) is fitted with a washer. The two sets of nuts (23) and the washer are respectively set at both ends of the plunger (18).

5. The spring seal device of claim 4, wherein, The upper part of the top flange cover (6) of the cylinder is provided with a first waterproof cap (22), which is slidably sleeved on the outside of the limiting rod (20).

6. The spring seal device of claim 1, wherein, The plunger (18) has an internal threaded hole at the top, and the limiting rod (20) is threadedly connected to the internal threaded hole. The limiting rod (20) is threadedly connected to a nut (23), and the nut (23) is fitted with a gasket. The nut (23) and the gasket are located on the upper part of the flange cover (6) at the top of the cylinder.

7. The spring seal device of claim 6, wherein, A second waterproof cap (24) is provided on the upper part of the top flange cover (6) of the cylinder, and the second waterproof cap (24) covers the top of the limiting rod (20).

8. The spring seal device of claim 1, wherein, The limiting rod (20) is externally slidably connected to two perforated pads (21), which are respectively set at the upper and lower ends of the spring (19).

9. The spring seal device of claim 1, wherein, The height of the spring-loaded sulfur sealing device is 0.4 to 1.2 m.

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