Composite efficient steam-water separation system for improving steam dryness

Abstract

The utility model relates to a composite efficient steam-water separation system for improving steam dryness, which comprises a steam inlet pipeline, a steam outlet pipeline and a steam-water separator, and the steam-water separator comprises an outer barrel, an inner barrel, a steam inlet, a steam outlet and a water collecting pipeline; the inner cylinder is of a hollow structure, is arranged in the outer cylinder and is coaxial with the outer cylinder, and the hollow part of the inner cylinder is communicated with the top space and the bottom space of the outer cylinder; the top edge of the inner cylinder is provided with a connecting ring which is connected with the outer cylinder; the steam inlet and the steam outlet are respectively formed in two opposite sides of the upper half part of the outer barrel; the steam inlet is located below the connecting ring, and the steam outlet is located above the connecting ring; a spiral guide plate is also arranged between the inner barrel and the outer barrel; the caliber of the spiral guide plate channel is smaller than that of the inner cylinder body; the steam inlet is connected with a steam inlet pipeline, and the steam outlet is connected with a steam outlet pipeline; and the water collecting pipeline is arranged at the bottom of the outer cylinder. Efficient separation of steam and liquid can be achieved, and high-dryness steam is obtained.

Description

Technical Field

[0001] This utility model relates to the field of saturated steam transport technology, and in particular to a composite high-efficiency steam-water system for improving steam dryness. Background Technology

[0002] The steam used in cigarette manufacturing processes is saturated steam. Low-dryness saturated steam contains a large amount of condensate, which can easily cause water hammer during steam pipeline transmission, affecting the safe and stable operation of the steam pipeline. In addition, low-dryness saturated steam has low heat transfer efficiency, which can cause process deviations in the heating and baking of tobacco.

[0003] Installing a steam-water separator on a steam pipeline typically removes condensate from the steam. Common steam-water separators are usually baffle-type or cyclone-type. In a baffle-type separator, water droplets change direction upon encountering a baffle, allowing dry steam to bypass the baffle and continue forward, with the water droplets eventually falling to the bottom of the separator, completing steam-liquid separation. Cyclone-type separators utilize centrifugal force to achieve steam-liquid separation. Because the steam load used in cigarette production frequently fluctuates, the steam velocity also fluctuates. Traditional baffle-type and cyclone-type steam-water separators often struggle to obtain high-dryness, stable steam to meet process requirements. To obtain high-dryness steam, this utility model patent proposes a high-efficiency steam-water separator for improving steam dryness, achieving steam-water separation across the entire load range to obtain high-dryness steam to ensure the smooth operation of cigarette manufacturing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a composite high-efficiency steam-liquid separation system for improving steam dryness. By altering the diameter of the steam delivery channel, the channel is divided into a high-velocity swirling centrifugal steam-liquid separation zone and a low-velocity baffled steam-liquid separation zone. Combined with a packing adsorption zone, efficient steam-liquid separation is achieved, resulting in high-dryness steam that can provide high-quality steam for subsequent production processes. Specifically, the technical solution of this invention to achieve the above objective is as follows:

[0005] A composite high-efficiency steam-water system for improving steam dryness includes a steam inlet pipeline, a steam outlet pipeline, and a steam-water separator.

[0006] The steam-water separator includes an outer cylinder, an inner cylinder, a steam inlet, a steam outlet, and a water collection pipe. The inner cylinder is hollow and is installed inside the outer cylinder, coaxial with it. The hollow portion of the inner cylinder connects the top and bottom spaces of the outer cylinder. The top plane of the inner cylinder is inclined, and a connecting ring is provided at the top edge of the inner cylinder to connect it to the outer cylinder. The steam inlet and steam outlet are respectively installed on opposite sides of the upper half of the outer cylinder. The steam inlet is located below the connecting ring, and the steam outlet is located above the connecting ring. A spiral guide plate is also provided between the inner cylinder and the outer cylinder; the diameter of the spiral guide plate channel is smaller than the diameter of the inner cylinder; the steam inlet of the steam-water separator is connected to the steam inlet pipeline, and the steam outlet of the steam-water separator is connected to the steam outlet pipeline; the water collection pipeline is installed at the bottom of the outer cylinder; steam enters the space between the outer cylinder and the inner cylinder through the steam inlet, is transported downward along the spiral guide plate to the bottom space of the outer cylinder, and then is transported upward through the inner cylinder to the top space of the outer cylinder before being discharged through the steam outlet.

[0007] Furthermore, the inner cylinder is provided with a filler adsorption layer, which is provided with multiple corrugated plates, and corrugated material can be filled between the corrugated plates.

[0008] Furthermore, the water collection pipeline is equipped with a condensate drain valve assembly, which includes a shut-off valve, a working condensate drain valve, a sight glass, a check valve, and a shut-off valve in sequence; the condensate drain valve assembly is used to promptly discharge the condensate separated during operation.

[0009] Furthermore, the water collection pipeline is also equipped with a drain valve assembly, the connection position of the drain valve assembly to the water collection pipeline is lower than that of the drain valve assembly; the drain valve assembly includes a sewage discharge valve assembly and a start-stop constant pressure drain valve assembly arranged in parallel; the sewage discharge valve assembly includes a primary sewage discharge ball valve and a secondary sewage discharge shut-off valve; the start-stop constant pressure drain valve assembly includes a shut-off valve and a start-stop constant pressure drain valve.

[0010] Furthermore, an exhaust valve assembly is provided at the top of the outer cylinder; the exhaust valve assembly includes a ball valve and an automatic exhaust valve; a steam dryness meter is also provided on the outer cylinder, the steam dryness meter is installed at the steam outlet and is used to monitor the steam dryness.

[0011] Furthermore, a water receiving tray is provided inside the outer cylinder, and the outlet below the spiral guide plate is located above the water receiving tray.

[0012] Furthermore, a bypass pipeline is provided in parallel with the steam-water separator. The two ends of the bypass pipeline are respectively connected to the steam inlet pipeline and the steam outlet pipeline, and a shut-off valve is provided on the bypass pipeline.

[0013] The wet steam transported by the steam inlet pipe enters the steam-water separator 3 through the steam inlet 33. It flows downwards in a swirling motion within the spiral guide plate 41 in the interlayer between the outer cylinder 31 and the inner cylinder 32. Due to the small diameter of the spiral guide plate 41, the steam moves at high speed. The high-speed centrifugal force separates water droplets and foam, which flow into the water collection pan 39 along the inner wall of the outer cylinder 31. After rotating to the lower part of the inner cylinder 32, the steam expands and slows down, flowing upwards at a very low velocity, forming a low-velocity baffled steam-water separation. The rising steam is dried by the packing adsorption layer 38 and then enters the upper space of the outer cylinder 31. The separated condensate is discharged from the water collection pan at the bottom of the separator. After drying, the steam enters the upper space of the separator at a low velocity. At this point, the density difference between water vapor and air achieves steam-water separation. The separated air is discharged from the exhaust valve group 36 at the top, and the separated steam is discharged from the side outlet to the steam outlet pipeline after passing through the baffle. A steam dryness meter 37 is installed on the side of the steam-water separator 3 for real-time online monitoring of the dryness of the separated steam. A water collection pipe is installed at the bottom of the steam-water separator 3 to collect the condensate produced during steam-liquid separation. A drain valve assembly 4 is connected to one side of the water collection pipe to promptly discharge the condensate separated during operation and prevent secondary entrainment due to water accumulation in the separator. A drain valve assembly 5 and a start-up / shutdown constant pressure drain valve assembly 6 are connected to the other side of the water collection pipe. The drain valve assembly 5 is used to discharge impurities that settle at the bottom of the water collection pipe. The start-up / shutdown constant pressure drain valve is used to accelerate drainage during the low-pressure stage of start-up and shutdown, increasing the start-up speed and reducing water hammer.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (I) This utility model adopts a combination of cyclone centrifugal force steam-water separation, low flow rate baffle steam-water separation, packing adsorption steam-water separation, and low flow rate baffle steam-gas separation, which can achieve efficient separation of steam and liquid, obtain steam with high dryness, and achieve better separation effect, providing high-quality steam for subsequent production processes.

[0016] (ii) The other side of the water collection pipe is connected to a drain valve assembly and a start-up / shutdown constant pressure drain valve assembly. The drain valve assembly can discharge impurities that settle at the bottom of the water collection pipe, ensuring the cleanliness of the system; the start-up / shutdown constant pressure drain valve assembly can accelerate drainage during the low-pressure phase of start-up and shutdown, increase the start-up speed, reduce the impact of water hammer on the system, and improve the safety and stability of the system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system connection described in this utility model;

[0018] Figure 2 This is a schematic diagram of the main view of the system described in this utility model;

[0019] Figure 3 This is a cross-sectional view of the steam-water separator described in an embodiment of the present invention;

[0020] In the picture:

[0021] 1—Steam inlet pipeline; 2—Steam outlet pipeline;

[0022] 3—Steam-water separator, 31—Outer cylinder, 32—Inner cylinder, 33—Steam inlet, 34—Steam outlet, 35—Collector

[0023] Water piping; 36—Air vent valve assembly; 37—Steam dryness meter; 38—Packaging adsorption layer; 39—Water receiving tray.

[0024] 40—Connecting ring, 41—Helical guide plate;

[0025] 4—Drain valve assembly; 5—Sewage valve assembly; 6—Start-stop pressure-regulating drain valve assembly; 7—Bypass pipeline. Detailed Implementation

[0026] like Figure 1-3 As shown, the embodiments of this utility model are as follows:

[0027] A composite high-efficiency steam-water system for improving steam dryness includes a steam inlet pipeline 1, a steam outlet pipeline 2, a bypass pipeline 7, and a steam-water separator 3.

[0028] The steam-water separator 3 includes an outer cylinder 31, an inner cylinder 32, a steam inlet 33, a steam outlet 34, and a water collection pipe 35. The inner cylinder 32 is hollow and is installed inside the outer cylinder 31, coaxial with it. The hollow portion of the inner cylinder 32 connects the top and bottom spaces of the outer cylinder 31. The top plane of the inner cylinder 32 is inclined, and a connecting ring 40 is provided at the top edge of the inner cylinder 32 to connect it to the outer cylinder 31. A packing adsorption layer 38 is provided inside the inner cylinder 32, consisting of two corrugated plates, with corrugated ceramic material filling the spaces between the plates. The steam inlet 33 and the steam outlet 34 are respectively installed on opposite sides of the upper half of the outer cylinder 31; each of the steam inlet 33 and the steam outlet 34 is equipped with a shut-off valve. The steam inlet 33 is located below the connecting ring 40, and the steam outlet 34 is located above the connecting ring 40. An exhaust valve assembly 36 is installed at the top of the outer cylinder 31. The exhaust valve assembly 36 includes a ball valve and an automatic exhaust valve. A steam dryness meter 37 is also installed on the outer cylinder 31, located at the steam outlet 34, to monitor steam dryness. A spiral guide plate 41 is also installed between the inner cylinder 32 and the outer cylinder 31. The diameter of the spiral guide plate 41 channel is smaller than the diameter of the inner cylinder 32. A water receiving tray 39 is installed inside the outer cylinder 31. The outlet below the spiral guide plate 41 is located above the water receiving tray 39. High-speed centrifugal force separates water droplets and foam, which then flow into the water receiving tray 39 along with the inner wall of the outer cylinder 31. The steam inlet 33 of the steam-water separator 3 is connected to the steam inlet pipeline 1, and the steam outlet 34 of the steam-water separator 3 is connected to the steam outlet pipeline 2. A water collection pipeline 35 is installed at the bottom of the outer cylinder 31. Steam enters the space between the outer cylinder 31 and the inner cylinder 32 through the steam inlet 33, is conveyed downwards along the spiral guide plate 41 to the bottom space of the outer cylinder 31, and then upwards through the inner cylinder 32 to the top space of the outer cylinder 31 before being discharged through the steam outlet 34. A bypass pipeline 7 is connected in parallel with the steam-water separator 3, with both ends connected to the steam inlet pipeline 1 and the steam outlet pipeline 2, respectively. A shut-off valve is installed on the bypass pipeline 7. When the steam-water separator 3 needs maintenance, steam can be conveyed to the steam-using equipment through the bypass pipeline 7.

[0029] The water collection pipeline 35 is equipped with a condensate trap group 4, which includes a shut-off valve, a working condensate trap, a sight glass, a check valve, and a shut-off valve in sequence. The condensate trap group 4 is used to promptly discharge condensate separated during operation. The water collection pipeline 35 is also equipped with a drain valve group, which is connected to the water collection pipeline 35 at a position lower than the condensate trap group 4. The drain valve group includes a sewage discharge valve group 5 and a start-stop constant pressure drain valve group 6 connected in parallel. The sewage discharge valve group 5 includes a primary sewage discharge ball valve and a secondary sewage discharge shut-off valve. The start-stop constant pressure drain valve group 6 includes a shut-off valve and a start-stop constant pressure drain valve.

[0030] The wet steam transported by the steam inlet pipe enters the steam-water separator 3 through the steam inlet 33. It flows downwards in a swirling motion within the spiral guide plate 41 in the interlayer between the outer cylinder 31 and the inner cylinder 32. Due to the small diameter of the spiral guide plate 41, the steam moves at high speed. The high-speed centrifugal force separates water droplets and foam, which flow into the water collection pan 39 along the inner wall of the outer cylinder 31. After rotating to the lower part of the inner cylinder 32, the steam expands and slows down, flowing upwards at a very low velocity, forming a low-velocity baffled steam-water separation. The rising steam is dried by the packing adsorption layer 38 and then enters the upper space of the outer cylinder 31. The separated condensate is discharged from the water collection pan at the bottom of the separator. After drying, the steam enters the upper space of the separator at a low velocity. At this point, the density difference between water vapor and air achieves steam-water separation. The separated air is discharged from the exhaust valve group 36 at the top, and the separated steam is discharged from the side outlet to the steam outlet pipeline after passing through the baffle. A steam dryness meter 37 is installed on the side of the steam-water separator 3 for real-time online monitoring of the dryness of the separated steam. A water collection pipe is installed at the bottom of the steam-water separator 3 to collect the condensate produced during steam-liquid separation. A drain valve assembly 4 is connected to one side of the water collection pipe to promptly discharge the condensate separated during operation and prevent secondary entrainment due to water accumulation in the separator. A drain valve assembly 5 and a start-up / shutdown constant pressure drain valve assembly 6 are connected to the other side of the water collection pipe. The drain valve assembly 5 is used to discharge impurities that settle at the bottom of the water collection pipe. The start-up / shutdown constant pressure drain valve is used to accelerate drainage during the low-pressure stage of start-up and shutdown, increasing the start-up speed and reducing water hammer.

[0031] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A composite high-efficiency steam-water system for improving steam dryness, comprising a steam inlet pipe (1), a steam outlet pipe (2), and a steam-water separator (3), characterized in that: The steam-water separator (3) includes an outer cylinder (31), an inner cylinder (32), a steam inlet (33), a steam outlet (34), and a water collection pipe (35). The inner cylinder (32) is a hollow structure, installed inside the outer cylinder (31) and coaxial with the outer cylinder (31). The hollow part of the inner cylinder (32) connects the top and bottom spaces of the outer cylinder (31). The top plane of the inner cylinder (32) is an inclined plane, and a connecting ring (40) is provided on the top edge of the inner cylinder (32) to connect with the outer cylinder (31). The steam inlet (33) and the steam outlet (34) are respectively installed on opposite sides of the upper half of the outer cylinder (31). The steam inlet (33) is located below the connecting ring (40), and the steam outlet (34) is located below the connecting ring (40). Above; a spiral guide plate (41) is also provided between the inner cylinder (32) and the outer cylinder (31); the diameter of the channel of the spiral guide plate (41) is smaller than the diameter of the inner cylinder (32); the steam inlet (33) of the steam-water separator (3) is connected to the steam inlet pipeline (1), and the steam outlet (34) of the steam-water separator (3) is connected to the steam outlet pipeline (2); the water collection pipeline (35) is installed at the bottom of the outer cylinder (31); steam enters between the outer cylinder (31) and the inner cylinder (32) through the steam inlet (33), is transported downward along the spiral guide plate (41) to the bottom space of the outer cylinder (31), and is then transported upward through the inner cylinder (32) to the top space of the outer cylinder (31) and discharged along the steam outlet (34).

2. The composite high-efficiency steam-water system for improving steam dryness as described in claim 1, characterized in that: The inner cylinder (32) is provided with a filler adsorption layer (38), which is provided with multiple corrugated plates, and corrugated material can be filled between the corrugated plates.

3. The composite high-efficiency steam-water system for improving steam dryness as described in claim 1, characterized in that: The water collection pipeline (35) is equipped with a condensate drain valve assembly (4), which is provided with a shut-off valve, a working condensate drain valve, a sight glass, a check valve and a shut-off valve in sequence; the condensate drain valve assembly (4) is used to discharge the condensate separated during operation in a timely manner.

4. A composite high-efficiency steam-water system for improving steam dryness as described in claim 3, characterized in that: The water collection pipeline (35) is also equipped with a drain valve group, and the connection position of the drain valve group to the water collection pipeline (35) is lower than that of the drain valve group (4); the drain valve group includes a sewage valve group (5) and a start-stop constant pressure drain valve group (6) arranged in parallel; the sewage valve group (5) includes a primary sewage ball valve and a secondary sewage shut-off valve; the start-stop constant pressure drain valve group (6) includes a shut-off valve and a start-stop constant pressure drain valve.

5. A composite high-efficiency steam-water system for improving steam dryness as described in claim 1, characterized in that: The outer cylinder (31) is provided with an exhaust valve assembly (36) at the top; the exhaust valve assembly (36) includes a ball valve and an automatic exhaust valve; the outer cylinder (31) is also provided with a steam dryness meter (37), which is installed at the steam outlet (34) to monitor the steam dryness.

6. A composite high-efficiency steam-water system for improving steam dryness as described in claim 1, characterized in that: The outer cylinder (31) is provided with a water receiving tray (39), and the outlet below the spiral guide plate (41) is located above the water receiving tray (39).

7. A composite high-efficiency steam-water system for improving steam dryness as described in claim 1, characterized in that: A bypass pipeline (7) is also provided in parallel with the steam-water separator (3). The two ends of the bypass pipeline (7) are connected to the steam inlet pipeline (1) and the steam outlet pipeline (2) respectively. A shut-off valve is provided on the bypass pipeline (7).

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