Totally-closed steam discharge capacity expansion and pressure reduction device

Abstract

The utility model relates to oil field equipment, in particular to a totally-closed steam discharge capacity expansion and pressure reduction device which comprises a capacity expansion pressure reducer, a water tank is arranged on the outer side of the capacity expansion pressure reducer, and a liquid level meter and a drainage pump are arranged on one side of the water tank. An air inlet pipe and an exhaust pipe of the expansion pressure reducer extend out of the top of the water tank; a plurality of branch pipes for communicating an inner cavity of the expansion pressure reducer with the bottom of an inner cavity of the water tank are arranged on the outer side of the expansion pressure reducer; a chimney with the bottom communicated with the water tank is arranged on the water tank, the top of the chimney is connected with an inverted-cone-shaped umbrella cap through a support, the outlet end of the exhaust pipe is communicated with the middle of the chimney, and a spiral flow deflector is arranged at the upper end in a cavity of the chimney. According to the utility model, the cooling of steam and the trapping of moisture can be improved, so that the moisture loss is effectively avoided, and the problem that high-temperature steam is liquefied at the outlet of the chimney and easily scalds people is solved.

Description

Technical Field

[0001] This utility model relates to oilfield equipment, specifically a fully enclosed steam emission expansion and pressure reduction device. Background Technology

[0002] Currently, in the process of heavy oil extraction in various oilfields, the oilfield steam injection boilers will discharge the high-temperature steam inside the equipment into the expansion and pressure reducing device when the boiler is started, stopped, or malfunctions, in order to ensure the steam quality and the safety of the oilfield steam injection boiler equipment.

[0003] Traditional expansion and pressure reducing devices consist of a main body, an inlet pipe, and an exhaust pipe. High-temperature and high-pressure steam enters the expansion and pressure reducing device through the inlet pipe and is then discharged after pressure reduction. However, traditional expansion and pressure reducing devices have poor pressure reduction effect and still discharge a large amount of steam, resulting in serious moisture loss. Furthermore, some high-temperature droplets splash during the discharge process, causing high-temperature burns to personnel. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a fully enclosed steam discharge expansion and pressure reduction device. This device can improve the cooling of steam and the capture of moisture, thereby effectively preventing moisture loss and avoiding the problem of high-temperature steam liquefying at the chimney outlet and easily scalding personnel.

[0005] The technical solution of this utility model is: a fully enclosed steam discharge expansion and pressure reduction device, including an expansion and pressure reduction device, a water tank is provided on the outside of the expansion and pressure reduction device, the expansion and pressure reduction device is encapsulated in the water tank, a level gauge communicating with the water tank is provided on one side of the water tank, and a drain pump communicating with the water tank is provided.

[0006] The air inlet and exhaust pipes of the expansion and pressure reducing device both extend from the top of the water tank, and multiple branch pipes connecting the inner cavity of the expansion and pressure reducing device to the bottom of the inner cavity of the water tank are provided on the outside of the expansion and pressure reducing device.

[0007] The water tank is equipped with a chimney whose bottom is connected to the water tank. The top of the chimney is connected to an inverted conical umbrella cap via a bracket. The outlet end of the exhaust pipe is connected to the middle of the chimney. The upper part of the chimney cavity is equipped with a spiral guide vane.

[0008] Preferably, it also includes a skid-mounted base, on which both the water tank and the drain pump are mounted.

[0009] Preferably, the system also includes a controller, wherein the level gauge is an electronic level gauge, and both the electronic level gauge and the drainage pump are electrically connected to the controller.

[0010] Preferably, the intake pipe of the expansion and pressure reducing device is a multi-stage variable diameter pipe, and the inner diameter gradually increases from the inlet end to the outlet end. A throttling orifice plate is provided at each diameter change point in the intake pipe cavity.

[0011] Preferably, a wire mesh demister is connected inside the cavity of the expansion and pressure reducing device at the point where it communicates with the exhaust pipe.

[0012] Preferably, the water tank is provided with a scalding-proof protective railing on the outside.

[0013] Compared with the prior art, this utility model has the following advantages: by dispersing steam through multiple channels, the noise during steam pressure reduction and discharge can be reduced, and the multiple channels have higher condensation and liquefaction efficiency, avoiding moisture loss;

[0014] In addition, the steam is liquefied by using spiral guide vanes and water tank washing, which further improves the cooling of the steam and the capture of moisture, thereby effectively avoiding moisture loss and preventing the problem of high-temperature steam liquefying at the chimney outlet and easily scalding people.

[0015] By linking the level gauge and the drain pump with the controller, the liquid level can be automatically monitored and excess condensate can be automatically drained, replacing the manual drainage process and reducing the labor intensity of personnel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the water tank;

[0018] Figure 3 This is a schematic diagram of the assembly of the spiral guide vanes;

[0019] Figure 4 This is a schematic diagram of the intake pipe structure;

[0020] Figure 5 This is a schematic diagram of the assembly of a wire mesh demister.

[0021] In the diagram: 1. Water tank, 2. Anti-scalding isolation railing, 3. Air inlet pipe, 4. Expansion pressure reducer, 5. Exhaust pipe, 6. Chimney, 7. Support bracket, 8. Umbrella cap, 9. Drain pump, 10. Controller, 11. Level gauge, 12. Skid-mounted base, 13. Branch pipe, 14. Spiral guide vane, 15. Throttling orifice plate, 16. Wire mesh demister. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0023] like Figures 1 to 3A fully enclosed steam discharge expansion and pressure reduction device includes an expansion and pressure reduction device 4, a water tank 1 is provided on the outside of the expansion and pressure reduction device 4, the expansion and pressure reduction device 4 is encapsulated in the water tank 1, a level gauge 11 connected to the water tank 1 is provided on one side of the water tank 1, and a drain pump 9 connected to the water tank 1 is provided.

[0024] The water tank 1 is equipped with a scalding isolation railing 2 on the outside, and a skid-mounted base 12 is provided below the water tank 1. The water tank 1 and the drain pump 9 are both installed on the skid-mounted base 12.

[0025] The air inlet pipe 3 and the exhaust pipe 5 of the expansion pressure reducer 4 both extend from the top of the water tank 1. Multiple branch pipes 13 are provided on the outside of the expansion pressure reducer 4 to connect the inner cavity of the expansion pressure reducer 4 with the bottom of the inner cavity of the water tank 1.

[0026] The water tank 1 is provided with a chimney 6 whose bottom is connected to the water tank 1. The top of the chimney 6 is connected to an inverted conical umbrella cap 8 through a bracket 7. The outlet end of the exhaust pipe 5 is connected to the middle of the chimney 6. The upper part of the cavity of the chimney 6 is provided with a spiral guide vane 14.

[0027] Working principle:

[0028] Steam enters the expansion and pressure reducing device 4 through the inlet pipe 3. In the expansion and pressure reducing device 4, some steam is converted into condensate, some steam enters the chimney 6 directly, and some steam enters the water tank 1 through the branch pipe 13 and then enters the chimney 6. It is liquefied by the spiral guide vanes 14 in the chimney 6, and the liquefied water flows back into the water tank 1. The part of steam that passes through the water tank 1 will condense some of the liquefied water in the water tank 1. When the amount of condensate in the water tank 1 increases, it can form a water washing effect on the steam entering the water tank 1 through the branch pipe 13, further improving the collection of moisture from the steam.

[0029] Dispersing steam through multiple channels reduces noise during steam decompression and discharge. The multiple channels also provide higher condensation and liquefaction efficiency, preventing moisture loss. Furthermore, the use of spiral guide vanes 14 and water tank 1 for steam liquefaction further improves steam cooling and moisture capture, thus preventing moisture loss and avoiding the problem of high-temperature steam liquefying at the chimney outlet 6 and potentially causing burns. Example 2

[0030] This embodiment is a further optimization based on the above embodiment, specifically:

[0031] like Figure 1 and Figure 2 This embodiment also includes a controller 10, and the level gauge 11 is an electronic level gauge 11. The electronic level gauge 11 and the drainage pump 9 are both electrically connected to the controller 10.

[0032] By linking the level gauge 11 and the drain pump 9 through the controller 10, the liquid level can be automatically monitored and excess condensate can be automatically drained, replacing the process of manually starting the drainage and reducing the labor intensity of personnel. Example 3

[0033] This embodiment is a further optimization based on the above embodiment, specifically:

[0034] like Figure 4 The inlet pipe 3 of the expansion pressure reducer 4 is a multi-stage variable diameter pipe, and the inner diameter gradually increases from the inlet end to the outlet end. When steam passes through the inlet pipe 3, the multi-stage variable diameter design and multiple throttling orifice plates 15 can reduce the pressure and liquefy the steam.

[0035] like Figure 5 Inside the cavity of the expansion and pressure reducing device 4, a wire mesh demister 16 is connected to the exhaust pipe 5. The wire mesh demister 16 can liquefy the steam and further prevent the loss of moisture in the exhaust steam.

[0036] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A fully enclosed steam discharge expansion and pressure reducing device, comprising an expansion and pressure reducing device, characterized in that: A water tank is provided outside the volume expander and pressure reducer, the volume expander and pressure reducer is encapsulated in the water tank, a liquid level gauge connected to the water tank is provided on one side of the water tank, and a drainage pump connected to the water tank is provided; The air inlet pipe and the air outlet pipe of the volume expander and pressure reducer both extend from the top of the water tank, and a plurality of branch pipes are provided on the outside of the volume expander and pressure reducer to connect the inner cavity of the volume expander and pressure reducer with the bottom of the inner cavity of the water tank; The water tank is provided with a chimney whose bottom is connected to the water tank, the top of the chimney is connected with an inverted cone cap through a bracket, the outlet end of the exhaust pipe is connected to the middle of the chimney, and the upper end of the chimney cavity is provided with a spiral guide plate.

2. A fully enclosed steam discharge expansion and pressure reducing device according to claim 1, characterized in that: It also includes a skid-mounted base, on which the water tank and the drainage pump are both installed.

3. A fully enclosed steam discharge expansion and pressure reducing device according to claim 1, characterized in that: It also includes a controller, the liquid level meter is an electronic liquid level meter, and the electronic liquid level meter and the drainage pump are both electrically connected to the controller.

4. A fully enclosed steam discharge expansion and pressure reducing device according to claim 1, characterized in that: The air inlet pipe of the volume expander and pressure reducer is a multi-stage reducer, and the inner diameter increases step by step from the inlet end to the outlet end. A throttling orifice plate is provided at each diameter reduction point in the air inlet pipe cavity.

5. A fully enclosed steam discharge expansion and pressure reducing device according to claim 1, characterized in that: A wire mesh demister is connected to the cavity of the volume expander and pressure reducer at a location where the cavity is connected to the exhaust pipe.

6. A fully enclosed steam discharge expansion and pressure reducing device according to claim 1, characterized in that: An anti-scalding isolation guardrail is arranged on the outer side of the water tank.

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