Device for drying nitrogen before compression

Abstract

The utility model provides a drying device before nitrogen compression, and belongs to the field of gas drying. The problems that a traditional drying means is high in energy consumption and low in speed, and drying agents are short in service life and large in consumption are solved. The top of the shell is provided with an air inlet end and an air outlet end, the interior of the shell is coaxially and rotatably connected with a moisture separation part, the peripheral side of the moisture separation part is integrally provided with a condensation part, the top of the moisture separation part is provided with a plurality of separation channel inlets, and a separation channel outlet of each separation channel inlet is used for guiding airflow to the inner wall of the condensation part; after air flow enters from the air inlet end, part of the air flow flows along the inlet of the separation channel, is discharged from the outlet of the separation channel and flows along the condensation part, part of the air flow flows to the condensation part along the outer wall of the moisture separation part, and all the air flow reversely flows upwards and flows away from the air outlet end after confluence; and the openings are distributed at the lowest point of the condensation part and are used for guiding condensed water into the lower part of the shell. The device is mainly used for drying before nitrogen compression.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of gas drying, especially, relate to a nitrogen compression front drying device. BACKGROUND

[0002] Nitrogen needs to be dried before compression, and the current processing methods mainly include drying tower drying and refrigeration type dryer drying.

[0003] The drying tower drying method uses drying agent to separate moisture in air, but the drying agent will be quickly contaminated, resulting in short service life. The refrigeration type dryer has slow drying speed and high cost. Because the refrigeration type dryer needs additional power to drive the compressor, and cannot utilize the waste heat of compressed air during the drying process. In addition, the adsorption type drying device also needs to consume a large amount of electric energy and cooling water during the regeneration process. SUMMARY

[0004] Therefore, the utility model aims at providing a nitrogen compression front drying device to solve the problems of high energy consumption, slow speed, short service life and large consumption of drying agent of the traditional drying method.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nitrogen compression front drying device, comprising:

[0006] A shell is provided with an air inlet end and an air outlet end at the top, and a moisture separation part is coaxially connected inside. The moisture separation part is integrally provided with a condensation part on the side, and a plurality of separation channel inlets are provided at the top. The separation channel outlet of each separation channel inlet is used to guide the airflow to the inner wall of the condensation part. After the airflow enters the air inlet end, part of it flows along the separation channel inlet and then flows along the condensation part from the separation channel outlet, and part of it flows along the outer wall of the moisture separation part to the condensation part. All the airflows converge and flow upward from the air outlet end.

[0007] An opening is provided with a plurality of openings and is distributed at the lowest point of the condensation part, which is used to guide the condensed water into the lower part of the shell.

[0008] Further, a plurality of gas pushing parts are provided on the peripheral wall of the moisture separation part, which are used to form upward air pressure during rotation and continuously contact with the gas.

[0009] Further, the condensation part is a curved surface structure, and the moisture separation part is a cylindrical shape and smoothly transitions with the curved surface of the condensation part.

[0010] Further, the direction of the separation channel outlet is tangent to the curved surface of the proximal inner wall of the condensation part.

[0011] Further, the shell comprises an upper shell and a lower shell which are detachably connected.

[0012] Furthermore, the lower housing is provided with a water outlet groove, the cavity of which is lower than the bottom wall of the lower housing, and the bottom wall of the water outlet groove is provided with a sealing part for draining water under predetermined conditions.

[0013] Furthermore, the sealing part is slidably connected to the bottom wall of the water outlet tank, and a water outlet channel is provided on the peripheral wall. The end away from the water outlet tank is connected to the driving part, which is used to drive the inlet end of the water outlet channel to connect or disconnect from the water outlet tank.

[0014] Furthermore, the sealing part is a T-shaped rotating body with an upper boss and a lower column. A sealing ring is provided on the side of the upper boss near the bottom wall of the water outlet tank.

[0015] Furthermore, the moisture separation unit is connected to the rotation drive unit.

[0016] Furthermore, the outlet is connected to the drying tower.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This device divides the airflow into two streams after it is introduced and passes through a rotating moisture separation section. One stream enters from the inlet of the separation channel and exits from the outlet of the separation channel, which can create a certain condensation effect, so that the gas and water are separated to a certain extent. After being blown out, the gas comes into contact with the inner wall of the condensation section and completes the separation, so that the water is discharged from the opening to the lower part of the shell. The other part of the gas flows along the outer wall of the moisture separation section and is then split, and the final gas outlet direction is opposite to the gas inlet. Thus, most of the water is separated in the condensation section and the backflow process, resulting in a good drying effect. At the same time, due to the rotation of the moisture separation section, the flow rate of the gas entering from the inlet of the separation channel and exiting from the outlet of the separation channel is reduced to a certain extent, which helps the water separation and reduces noise.

[0019] 2. This device, by setting up a gas-driving unit, can contact the upward-flowing gas to complete secondary condensation. At the same time, by utilizing its own rotation, it can generate an upward-driving gas flow, reducing the gas dynamics lost during the separation process and ensuring that the overall flow rate of the system does not decrease.

[0020] 3. By setting up a sealing part, this device can firmly seal the water outlet tank under the action of water pressure and wind pressure when water is stored, preventing leakage. Under the action of the drive part, it can drain water, which is highly reliable and can drain water without stopping the machine. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a nitrogen pre-compression drying device according to the present invention;

[0023] Figure 2 This is a top view of a nitrogen pre-compression drying device according to the present invention;

[0024] Figure 3 The present utility model Figure 2 Sectional view along axis AA;

[0025] Figure 4 This is a side view of a nitrogen pre-compression drying device according to the present invention;

[0026] Figure 5 The present utility model Figure 4 CC-direction sectional view;

[0027] Figure 6 The present utility model Figure 5 A magnified view of part D;

[0028] Figure 7 This is a schematic diagram showing the connection relationship between the moisture separation section, the condensation section, and the gas driving section described in this utility model;

[0029] Figure 8 The present utility model Figure 7 A second-person perspective view.

[0030] 1. Outer shell; 1-1. Air inlet; 1-2. Upper shell; 1-3. Lower shell; 1-4. Water outlet tank; 2. Moisture separation section; 3. Separation channel inlet; 4. Separation channel outlet; 5. Condensation section; 6. Opening; 7. Gas driving section; 8. Connecting section; 9. Rotation driving section; 10. Sealing section; 11. Water outlet channel; 12. Driving section. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0032] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this utility model are defined based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and are not intended to indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0033] In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Referring to the accompanying drawings, this embodiment describes a nitrogen pre-compression drying apparatus, comprising:

[0035] The outer casing 1 has an air inlet 1-1 and an air outlet 1-2 on the top, and a moisture separation section 2 is coaxially rotatably connected inside. The moisture separation section 2 has a condenser 5 integrally formed on its periphery, and a plurality of separation channel inlets 3 on its top. The separation channel outlet 4 of each separation channel inlet 3 is used to guide the airflow to the inner wall of the condenser 5. After the airflow enters from the air inlet 1-1, part of it flows along the separation channel inlet 3 and is discharged from the separation channel outlet 4 and flows along the condenser 5, while part of it flows along the outer wall of the moisture separation section 2 to the condenser 5. All the airflows converge and flow upward back out from the air outlet 1-2. In order to ensure that two airflows can be formed, the diameter of the air inlet 1-1 is larger than that of the moisture separation section 2, and part of the moisture separation section 2 extends into the air inlet 1-1.

[0036] Specifically, the outer casing 1 includes an upper casing 1-3 and a lower casing 1-4, which are connected in a detachable manner. Flanges are provided on the periphery, and the casing is connected by bolts. Sealing rings are installed at the connection points to ensure airtightness. The outer casing 1 is a cylindrical rotating body, which can suppress wind resistance to a certain extent. The moisture separation section 2 is specifically designed as a cylinder, and the condenser section 5 is a circular hemispherical hollow body. The moisture separation section 2 is located on the axis of the condenser section 5, and the two are integrally formed with a smooth transition, ensuring low wind resistance. By setting the outlet direction of the separation channel outlet 4 to be tangent to the curved surface of the inner wall of the condenser section 5, the gas blown out of the separation channel outlet 4 can flow along the inner wall of the condenser section 5 with low resistance and separate from the water. The gas continues to flow along the wall of the condenser section 5 and then flows upwards in a reverse flow. Some gas overflows from the opening 6, which helps to quickly carry water into the bottom of the lower casing 1-4. Simultaneously, since the moisture separation section 2 is always rotating, the water exiting from the opening 6 moves centrifugally, preventing water from approaching the rotating parts in the middle area, thus avoiding the influence of moisture on the rotating parts and extending their service life. At the same time, in order to reduce the wind resistance between the moisture separation section 2 and the airflow, the entire upper surface of the moisture separation section 2 extending into the air inlet 1-1 is rounded, including the inlet 3 of the separation channel.

[0037] Several openings 6 are provided and distributed at the lowest point of the condenser section 5 to guide condensate into the lower part of the outer casing 1. Specifically, they are arranged in a circumferentially even distribution, and the number is reasonably arranged according to the area of ​​the condenser section 5.

[0038] In this embodiment, several gas-driven sections 7 are provided on the peripheral wall of the moisture separation section 2. These sections generate upward air pressure and continuously contact the gas during rotation. Specifically, each gas-driven section 7 is configured as a blade, which generates an upward airflow during rotation. The tilt angle can be reasonably set according to the required airflow and the rotational speed of the moisture separation section 2. Simultaneously, each gas-driven section 7 needs to have a certain windward surface so that during rotation, it can further contact the gas through its windward surface, condensing a portion of the moisture, which is then centrifugally ejected and ultimately collected at the bottom of the outer casing 1.

[0039] In this embodiment, the lower housing 1-4 is provided with a water outlet 1-5. The cavity of the water outlet 1-5 is lower than the bottom wall of the lower housing 1-4. The bottom wall of the water outlet 1-5 is provided with a sealing part 10 for drainage under predetermined conditions. Specifically, the sealing part 10 is slidably connected to the bottom wall of the water outlet 1-5. A water outlet channel 11 is provided on the peripheral wall, and the end away from the water outlet 1-5 is connected to the driving part 12. The driving part 12 is used to drive the inlet end of the water outlet channel 11 to connect or disconnect with the water outlet 1-5. The sliding sealing method between the sealing part 10 and the water outlet 1-5 is set according to existing methods. The water outlet channel 11 is U-shaped. When the driving part 12 drives the sealing part 10 to move upward, the inlet end of the water outlet channel 11 will connect with the inside of the water outlet 1-5, thereby allowing water to be discharged smoothly. During this process, since the height of the water outlet tank 1-5 is lower than the bottom wall height of the lower shell 1-4, the air pressure inside the outer shell 1 will only accelerate the water discharge and will not overflow from here. When the water level in the water outlet tank 1-5 is lower than a certain threshold and the water level here is still higher than the inlet end of the water outlet channel 11, the drive unit 12 will drive the sealing unit 10 to reset, so that nitrogen will not overflow and can also ensure the discharge of most of the water. The drive unit 12 is selected according to actual needs, such as a linear drive component, such as a hydraulic cylinder or a pneumatic cylinder.

[0040] In this embodiment, the sealing part 10 is a T-shaped rotating body with an upper boss and a lower column. A sealing ring is provided on the side of the upper boss near the bottom wall of the water outlet 1-5. By making the sealing part 10 a T-shaped rotating body, the portion located inside the water outlet 1-5 can be stably pressed against the bottom wall of the water outlet 1-5 under the action of water pressure and wind pressure, increasing the reliability of the seal and preventing the water outlet channel 11 from connecting with the water outlet 1-5.

[0041] In this embodiment, the moisture separation unit 2 is connected to the rotation drive unit 9. Specifically, a connecting part 8 with a flange is integrally provided at the lower part of the moisture separation unit 2. The connecting part 8 is connected to the rotation drive unit 9. The rotation drive unit 9 can be connected to a motor through a reducer to complete the rotation drive of the moisture separation unit 2. The parameters and arrangement of the drive structure are reasonably arranged according to the actual situation.

[0042] In this embodiment, the air outlet 1-2 is connected to the drying tower. By placing this device in front of the drying tower, most of the moisture can be separated. Through the secondary drying provided by the drying tower, the drying efficiency is improved and the drying effect is guaranteed. At the same time, since most of the water has been separated, the power consumption of the drying tower, the amount of desiccant used, and the desiccant replacement cycle can be reduced.

[0043] In use, the moisture separation unit 2 is kept rotating. After the gas enters from the inlet end 1-1, it is divided into two streams by the cooperation between the pipe wall of the inlet end 1-1 and the moisture separation unit 2. One part enters from the separation channel inlet 3 and is discharged from the separation channel outlet 4. The other part flows along the outer wall of the moisture separation unit 2 and finally converges on the inner wall of the condensation unit 5 and flows back to be discharged from the outlet end 1-2. Before being discharged, it comes into contact with the gas pushing unit 7 to complete another condensation separation.

[0044] In the above process, three gas-liquid separations are performed in the gas driving section 7, the condensing section 5, and the separation channel, so that the water eventually flows out of the opening 6 and collects at the lower part of the outer shell 1.

[0045] During the drainage process, the drive unit 12 drives the water outlet channel 11 to extend into the water outlet tank 1-5. Under the action of wind pressure and water pressure, the water flows out quickly. If necessary, a liquid level sensor is installed in the water outlet tank 1-5. When the water level drops to the threshold, the water outlet channel 11 resets, completing the drainage process and preventing nitrogen from overflowing.

[0046] The sensors, controllers, and control programs mentioned above are all existing technologies and will not be elaborated upon.

[0047] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A nitrogen pre-compression drying device, characterized in that, include: The outer shell (1) has an air inlet (1-1) and an air outlet (1-2) on the top, and a moisture separation part (2) is coaxially rotatably connected inside. The moisture separation part (2) has a condenser (5) integrally arranged around its periphery, and a number of separation channel inlets (3) are arranged on the top. The separation channel outlet (4) of each separation channel inlet (3) is used to guide the airflow to the inner wall of the condenser (5). After the airflow enters from the air inlet (1-1), part of it flows along the separation channel inlet (3) and is discharged from the separation channel outlet (4) and flows along the condenser (5), and part of it flows along the outer wall of the moisture separation part (2) to the condenser (5). After all the airflows converge, they flow upward and back out from the air outlet (1-2). The opening (6) is provided with several and distributed at the lowest point of the condenser (5) to guide the condensate into the lower part of the outer shell (1).

2. The nitrogen pre-compression drying device according to claim 1, characterized in that: The water separation section (2) has several gas pushing sections (7) on its peripheral wall, which are used to generate upward wind pressure and continuously contact the gas when rotating.

3. The nitrogen pre-compression drying device according to claim 1, characterized in that: The condensation section (5) has a curved surface structure, and the moisture separation section (2) is cylindrical and smoothly transitions to the curved surface of the condensation section (5).

4. The nitrogen pre-compression drying device according to claim 3, characterized in that: The outlet direction of the separation channel (4) is tangent to the curved surface of the inner wall of the condenser (5) on the near side.

5. A nitrogen pre-compression drying apparatus according to claim 1, 2 or 3, characterized in that: The outer casing (1) includes a detachably connected upper casing (1-3) and a lower casing (1-4).

6. The nitrogen pre-compression drying apparatus according to claim 5, characterized in that: The lower housing (1-4) is provided with a water outlet groove (1-5). The cavity of the water outlet groove (1-5) is lower than the bottom wall of the lower housing (1-4). The bottom wall of the water outlet groove (1-5) is provided with a sealing part (10) for draining water under predetermined conditions.

7. The nitrogen pre-compression drying apparatus according to claim 6, characterized in that: The sealing part (10) is slidably connected to the bottom wall of the water outlet tank (1-5), and a water outlet channel (11) is provided on the peripheral wall. The end away from the water outlet tank (1-5) is connected to the driving part (12). The driving part (12) is used to drive the inlet end of the water outlet channel (11) to connect or disconnect from the water outlet tank (1-5).

8. A nitrogen pre-compression drying apparatus according to claim 6 or 7, characterized in that: The sealing part (10) is a T-shaped rotating body with an upper boss and a lower column. A sealing ring is provided on the side of the upper boss near the bottom wall of the water outlet tank (1-5).

9. A nitrogen pre-compression drying apparatus according to claim 1, 2, 3, 4, 6 or 7, characterized in that: The moisture separation unit (2) is connected to the rotation drive unit (9).

10. A nitrogen pre-compression drying apparatus according to claim 9, characterized in that: The outlet end (1-2) is connected to the drying tower.

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