Adjustable drainage throttling device and sulfur recovery device

Abstract

The utility model relates to the field of throttling devices, in particular to an adjustable drainage throttling device and a sulfur recovery device. The adjustable drainage throttling device comprises a stop valve, the stop valve comprises a valve body and an adjusting valve rod, a communicating cavity and a throttling hole are formed in the valve body, and the stop valve is connected with a pressure difference measuring tool used for detecting the pressure difference of the two sides of the stop valve. The opening degree is adjusted by adjusting the adjusting valve rod in the stop valve, the pressure difference is kept constant, the water flow speed in a pipeline is adjusted, then drainage throttling is achieved, due to the fact that a floating ball is not needed, the problem that internal parts in an existing drainage throttler are prone to being damaged is solved, and the recovery efficiency of the sulfur recovery device is improved.

Description

Technical Field

[0001] The utility model relates to the field of throttling devices, in particular to an adjustable hydrophobic throttling device and a sulfur recovery device. Background Art

[0002] In natural gas purification devices, steam is widely used in heat exchangers to heat the process medium. The use of steam for heat exchange is inevitably accompanied by the generation of condensed water. The hydrophobic throttle can prevent steam leakage and discharge condensed water, so it becomes an important device for preventing steam backflow in the condensate system.

[0003] At present, existing hydrophobic throttles are prone to problems such as poor drainage and short service life. The main reasons for failure are damage to the internal components of the hydrophobic throttle (such as the concave float), damage to the filter screen inside the hydrophobic throttle, and frequent opening and closing of the hydrophobic throttle. Failure of the hydrophobic throttle will lead to reduced drainage capacity, lower outlet temperature of the heater of the sulfur recovery unit, and thus affect the sulfur recovery rate.

[0004] A Chinese invention patent with authorization announcement number CN113007588B and authorization announcement date March 25, 2022 discloses a self-centering core type float ball steam trap, which includes a valve body, a connecting shaft is fixed on the valve body, the connecting shaft is fixedly connected to a valve seat, the valve body has a cavity, a float is provided in the cavity, the float is installed on the valve seat, the float is connected to a valve core for sealing or opening a drain port, the valve body has an inlet and an outlet connected to the cavity, the valve seat is provided with a channel connected to the outlet and a drain port for connecting the cavity and the channel, the valve seat is also provided with an exhaust port connected to the channel, and the exhaust port is provided with an exhaust device for connecting or blocking the cavity and the exhaust port.

[0005] During operation, steam and condensate enter the cavity through the inlet. As the temperature rises, the exhaust device closes after discharging the non-condensable gas. When there is not much condensate, the float is at the bottom due to gravity, and the valve core closes the channel. Steam cools in the cavity and turns into condensate. As the condensate increases, the float drives the valve core up and opens the channel. Condensate is discharged from the outlet. The self-centering core float trap opens or closes the water flow channel by floating up and down the float, thereby achieving the purpose of steam blocking and draining. However, since the float needs to move frequently during use, there is a problem that the float is easily damaged. Utility Model Content

[0006] The utility model provides an adjustable hydrophobic throttling device to solve the problem that the existing hydrophobic throttling device is easily damaged.

[0007] At the same time, the utility model also aims to provide a sulfur recovery device to solve the problem of low recovery efficiency of the existing sulfur recovery device due to the easy damage of the hydrophobic throttle.

[0008] The adjustable drain throttling device of the utility model adopts the following technical solutions:

[0009] An adjustable hydrophobic throttling device comprises a stop valve, wherein the stop valve comprises a valve body and an adjusting valve stem, a communicating cavity and a throttling hole are arranged in the valve body, and the stop valve is connected to a pressure difference measuring tool for detecting the pressure difference on both sides thereof.

[0010] Beneficial effects: The adjustable hydrophobic throttling device of the utility model improves the existing throttling device. Specifically, the adjustable hydrophobic throttling device of the utility model includes a stop valve and a pressure difference measuring tool. The opening size is adjusted by adjusting the regulating valve stem in the stop valve to keep the pressure difference constant, adjust the water flow speed in the pipeline, and then achieve hydrophobic throttling. Since no floating ball is needed, the problem of easy damage of internal components in the existing hydrophobic throttling device is avoided.

[0011] Furthermore, the pressure difference measuring tool is a differential pressure meter.

[0012] Furthermore, a filter is provided at the front end of the stop valve.

[0013] Furthermore, the connecting cavities are parallel to each other and form an angle of 5° to 30° with the flow direction of the pipeline.

[0014] Furthermore, the front and rear ends of the valve body are respectively connected to straight pipes, the straight pipes are respectively connected to conversion joints, the ends of the conversion joints are connected to flanges, and the straight pipes, conversion joints and flanges are symmetrically distributed on both sides of the stop valve.

[0015] The sulfur recovery device of the utility model adopts the following technical solutions:

[0016] A sulfur recovery device is provided in which an adjustable hydrophobic throttling device is provided, one end of the adjustable hydrophobic throttling device is connected to the shell outlet of a heat exchanger, and the other end is connected to a condensate collector, the adjustable hydrophobic throttling device comprises a stop valve, the stop valve comprises a valve body and a regulating valve stem, a communicating cavity and a throttling hole are provided in the valve body, and the stop valve is connected to a pressure difference measuring tool for detecting the pressure difference on both sides thereof.

[0017] Beneficial effects: The sulfur recovery device of the utility model is an improved invention. Specifically, the sulfur recovery device of the utility model adopts the adjustable hydrophobic throttling device of the utility model, which includes a stop valve and a pressure difference measuring tool. The opening size is adjusted by adjusting the regulating valve stem in the stop valve to keep the pressure difference constant, adjust the water flow speed in the pipeline, and then achieve hydrophobic throttling. Since no float is needed, the problem of easy damage of internal components in the existing hydrophobic throttling device is avoided, and the recovery efficiency of the sulfur recovery device is improved.

[0018] Furthermore, the pressure difference measuring tool is a differential pressure meter.

[0019] Furthermore, a filter is provided at the front end of the stop valve.

[0020] Furthermore, the connecting cavities are parallel to each other and form an angle of 5° to 30° with the flow direction of the pipeline.

[0021] Furthermore, the front and rear ends of the valve body are respectively connected to straight pipes, the straight pipes are respectively connected to conversion joints, the ends of the conversion joints are connected to flanges, and the straight pipes, conversion joints and flanges are symmetrically distributed on both sides of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic structural diagram of an embodiment of the adjustable hydrophobic throttling device.

[0023] Numbers in the figure: 1, flange; 2, straight pipe; 3, conversion joint; 4, valve body; 41, connecting chamber; 42, throttle hole; 5, regulating valve stem; 51, valve core; 6, Y-type filter; 7, differential pressure gauge. DETAILED DESCRIPTION

[0024] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0025] Specific implementation of the adjustable hydrophobic throttling device of the utility model:

[0026] The prior art discloses a self-setting core float trap, which opens or closes the water flow channel by floating up and down the float, so as to achieve the purpose of steam blocking and draining. However, since the float needs to move frequently during use, there is a problem that the float is easily damaged. The adjustable drain throttling device of the utility model proposes an improved solution to the shortcomings of the drain throttling device of the prior art. The core concept of the solution is to replace the existing float trap with the adjustable drain throttling device of the utility model. The adjustable drain throttling device includes a stop valve and a pressure difference measuring tool. By keeping the pressure difference constant, the water flow speed in the pipeline is adjusted to make the condensate flow out, thereby achieving the purpose of drain throttling.

[0027] Based on the above concept, Figure 1As shown, the adjustable hydrophobic throttling device of the utility model includes a stop valve, which includes a valve body 4 and a regulating valve stem 5. A communicating cavity 41 and a throttling hole 42 are provided in the valve body 4. The stop valve is connected to a pressure difference measuring tool, which is a pressure difference gauge 7. Straight pipes 2 are respectively connected to the front and rear ends of the valve body 4, and the straight pipes 2 are respectively connected to the conversion joints 3, and the ends of the conversion joints 3 are fixedly connected to the flange 1. The flange 1, the conversion joint 3 and the straight pipe 2 are symmetrically distributed on both sides of the stop valve. The regulating valve stem 5 is connected to the valve body 4, and a filter is connected before the front flange 1, and the filter is a Y-type filter 6.

[0028] Among the above-mentioned components, a connecting cavity 41 and a throttle hole 42 are provided in the valve body 4 of the stop valve. The connecting cavity 41 is provided on both sides of the valve body 4, connected with the throttle hole 42, parallel to each other, and at an angle of 5° to 30° with the pipeline flow direction. The throttle hole 42 should match the regulating valve stem 5, and the bottom end of the regulating valve stem 5 is built into the throttle hole 42, perpendicular to the entire pipeline flow direction. In other embodiments, the regulating valve stem may not be perpendicular to the pipeline flow direction, but may be set to be at an angle to the pipeline flow direction. The liquid flow rate at the outlet of the valve body 4 can be changed by adjusting the valve stem 5. In this embodiment, the valve core 51 of the regulating valve stem 5 is preferably conical, which can play a role in throttling, and can also accurately control the condensate discharge rate. In other embodiments, it can also be spherical, plunger-type, etc., which can also play a role in throttling.

[0029] The Y-type filter 6 has a built-in filter screen, so that it can filter out dirt in the front pipeline to prevent dirt from being brought into the subsequent pipeline and clogging the throttling device. In some other filters, angle pipe filters can also be used. The filter type is not limited, as long as it can play a filtering role. The above-mentioned pressure difference measuring tool is connected to the upstream and downstream of the stop valve. In this embodiment, the pressure difference measuring tool is a pressure difference gauge 7, which can accurately reflect the pressure difference of the throttling device and promptly reflect whether there is pressure cross-flow. In other embodiments, the pressure difference measuring tool can also be a pressure gauge or pressure sensor respectively arranged upstream and downstream of the stop valve, and it only needs to be able to reflect the pressure difference between the two ends of the stop valve.

[0030] The straight pipe 2 is connected to the front and rear ends of the valve body 4 respectively, and the straight pipe 2 is connected to the conversion joint 3 respectively. The end of the conversion joint 3 is fixedly connected to the flange 1, and the flange 1, the conversion joint 3 and the straight pipe 2 are symmetrically distributed front and back on both sides of the stop valve. In this embodiment, the conversion joint 3 can connect pipes with different inner diameters. The smaller the diameter of the straight pipe connected to the valve body 4, the easier it is to drain water and block steam. In some other embodiments, the conversion joint 3 may not be provided, and it is directly connected to the pipeline. Preferably, the flange 1, the straight pipe 2 and the conversion joint 3 are all made of carbon steel and are connected to each other by welding. However, in other embodiments, the flange 1, the straight pipe 2 and the conversion joint 3 may also be made of stainless steel and other materials. The connection method can also be connected by insertion and other methods.

[0031] Condensed water and steam flow into the Y-type filter 6 through the pipeline, and the Y-type filter 6 filters the dirt in the front pipeline. Through the connection of the flange 1, the straight pipe 2 and the conversion joint 3, the utility model can be connected to pipes with different inner diameters. Condensed water and steam continue to flow forward into the valve body 4, and the opening of the throttle hole 42 is adjusted by adjusting the valve stem 5 according to the reading of the differential pressure gauge 7, so that the water flow maintains a certain flow rate. After adjustment, since the amount of steam used normally is within a fixed range, the amount of condensed water generated is also within a fixed range, it is no longer necessary to adjust the opening of the throttle hole 42 by adjusting the valve stem 5 multiple times, which is convenient and quick.

[0032] Specific implementation of the sulfur recovery device of the utility model:

[0033] The innovation of the sulfur recovery device of the utility model lies in the use of the adjustable hydrophobic throttling device of the utility model. In the sulfur recovery device of the utility model, one end of the adjustable hydrophobic throttling device is connected to the shell outlet of the heat exchanger, and the other end is connected to the condensate collector. The structure of the adjustable hydrophobic throttling device can refer to the specific implementation of the above-mentioned adjustable hydrophobic throttling device, which will not be described in detail here.

Claims

1. An adjustable hydrophobic throttling device, comprising a stop valve, the stop valve comprising a valve body and a regulating valve stem, the valve body being provided with a communicating cavity and a throttling hole, characterized in that: The stop valve is connected to a pressure difference measuring tool for detecting the pressure difference on both sides thereof.

2. The adjustable hydrophobic throttling device according to claim 1 is characterized in that: The pressure difference measuring tool is a pressure difference gauge.

3. The adjustable hydrophobic throttling device according to claim 2 is characterized in that: A filter is arranged at the front end of the stop valve.

4. The adjustable hydrophobic throttling device according to claim 1 is characterized in that: The connecting cavities are parallel to each other and form an angle of 5° to 30° with the flow direction of the pipeline.

5. The adjustable hydrophobic throttling device according to any one of claims 1 to 4, characterized in that: The front and rear ends of the valve body are respectively connected to straight pipes, the straight pipes are respectively connected to conversion joints, the ends of the conversion joints are connected to flanges, and the straight pipes, conversion joints and flanges are symmetrically distributed on both sides of the stop valve.

6. A sulfur recovery device, in which an adjustable hydrophobic throttling device is provided, one end of the adjustable hydrophobic throttling device is connected to the shell outlet of the heat exchanger, and the other end is connected to the condensate collector, characterized in that: The adjustable hydrophobic throttling device comprises a stop valve, which comprises a valve body and a regulating valve stem. A communicating cavity and a throttling hole are arranged in the valve body. The stop valve is connected to a pressure difference measuring tool for detecting the pressure difference on both sides thereof.

7. The sulfur recovery device according to claim 6, characterized in that: The pressure difference measuring tool is a pressure difference gauge.

8. Differential pressure gauge The sulfur recovery device according to claim 7, characterized in that: A filter is arranged at the front end of the stop valve.

9. The sulfur recovery device according to claim 6, characterized in that: The connecting cavities are parallel to each other and form an angle of 5° to 30° with the flow direction of the pipeline.

10. The sulfur recovery device according to any one of claims 6 to 9, characterized in that: The front and rear ends of the valve body are respectively connected to straight pipes, the straight pipes are respectively connected to conversion joints, the ends of the conversion joints are connected to flanges, and the straight pipes, conversion joints and flanges are symmetrically distributed on both sides of the stop valve.

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