Variable pitch gas-liquid separator based on intelligent control

Abstract

The application relates to the technical field of gas-liquid separation, in particular to a variable-pitch gas-liquid separator based on intelligent control, which comprises a separation cylinder with a separation cavity, the top end of the separation cylinder is provided with an air inlet for communicating with the separation cavity, and the bottom end is provided with a bottom flow port for communicating with the separation cavity; a threaded guide rod is rotationally arranged in the separation cavity, the outer circumferential wall of the threaded guide rod is provided with multiple threaded sections along the axial direction, the pitches of the threads on each threaded section are different and gradually change, and a threaded sleeve ring capable of moving along the axial direction is threadedly connected to each threaded section, and multiple threaded sleeve rings are externally fixed with helical guide vanes capable of stretching and contracting along the axial direction; the variable-pitch helical guide vanes can adjust the own pitch according to the change of the feeding conditions of the air inlet, the gas speed in the gas-liquid separator is always maintained at the optimal separation speed, the equipment can be freely adjusted according to the working conditions, the equipment does not need to be frequently replaced, and the manufacturing cost and the labor cost are saved.

Description

Technical Field

[0001] This invention relates to the field of gas-liquid separation technology, and in particular to a variable pitch gas-liquid separator based on intelligent control. Background Technology

[0002] A gas-liquid separator, a common type of centrifugal separation equipment, mainly consists of an inlet, a separation chamber, an overflow port, and an underflow port. Gas carrying liquid droplets enters the separation chamber tangentially. Under centrifugal force, the droplets are thrown against the chamber wall and spiral downwards, finally exiting from the underflow port. The purified gas exits from the overflow port. Centrifugal gas-liquid separators are widely used in industrial production due to their simple structure, low economic cost, and high separation efficiency.

[0003] Gas-liquid separators utilize the density differences of materials in a rotating field. Through centrifugal force, denser materials move towards the outer wall of the separator, which is the core mechanism by which gas-liquid separators achieve their separation function. The key factor—the magnitude of centrifugal force—is directly related to the feed velocity at the gas-liquid separator inlet; the higher the inlet velocity, the greater the centrifugal force provided. However, in actual production, feed conditions often vary. As a static device, the gas-liquid separator has poor adaptability to different operating conditions, especially when dealing with complex situations arising in actual production, resulting in low separation efficiency.

[0004] Currently, various solutions have been tried to address this problem: combining gas-liquid separators with other types of separation equipment (such as electric field adsorbers, filter bags, etc.) to form a composite separation system, thereby improving the system's adaptability and separation efficiency. However, this method increases the system's complexity and investment costs, requires matching and optimization of different types of separation equipment, and may have compatibility issues. Furthermore, the control and maintenance of composite separation systems are more difficult. Another approach is to use an adjustable cone angle gas-liquid separator design, adjusting the separation performance by changing the cone angle of the separator cone. However, the adjustable range of the cone angle is limited and it affects the structural strength and stability of the separator. Without changing the external structure, a fixed-pitch spiral guide vane flow scheme is also used. The spiral pitch is carefully designed based on the physical properties of the separated particles and the inlet conditions to achieve the best separation effect. However, this still falls within the scope of static equipment, and the separation efficiency becomes unstable as the operating parameters change. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of existing gas-liquid separators that cannot adapt well to complex working conditions. A variable pitch gas-liquid separator based on intelligent control is provided.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a variable pitch gas-liquid separator based on intelligent control includes a separator body, the separator body includes a separation cylinder with a separation chamber, and the top of the separation cylinder is provided with an air inlet communicating with the separation chamber, and the bottom is provided with an underflow outlet communicating with the separation chamber.

[0007] A threaded guide rod is rotatably arranged in the separation chamber. The outer peripheral wall of the threaded guide rod is provided with multiple threaded segments along its axial direction. The thread pitch of each threaded segment is different and gradually changes. Each threaded segment is threadedly connected to a threaded collar that can move along the axial direction. Multiple threaded collars are externally fixed with helical guide vanes that can extend and retract along the axial direction.

[0008] Furthermore, a limiting sleeve is provided between the threaded collar and the helical guide vane to restrict the threaded collar from rotating with the threaded guide rod.

[0009] Furthermore, each threaded collar is provided with a support rod between itself and the helical guide vane, and the limiting cylinder is provided with a sliding groove along its axial direction for the support rod to slide.

[0010] Furthermore, the limiting cylinder has a double-layer structure, which includes an inner cylinder and an outer cylinder arranged coaxially, and a receiving cavity is formed between the two for accommodating the threaded guide rod and the threaded collar. The bottom end of the receiving cavity is sealed to form a limiting part for limiting the threaded collar.

[0011] Furthermore, the inner cylinder has an axially through structure to form an outlet channel for gas to flow out, and the top of the inner cylinder extends upward to form a separation cylinder for connecting to the outlet pipe.

[0012] Furthermore, there are multiple sets of support rods, the number of which corresponds to the number of threaded collars, and each set of support rods includes two support rods distributed vertically. The spiral guide vane has multiple sets of support grooves for the support rods to be inserted, and each set of support grooves includes two slots arranged opposite each other.

[0013] Furthermore, the top of the separating cylinder is provided with a cap and a sealing top cover, and a mechanical seal is provided between the two. The threaded guide rod passes through the cap and the sealing top cover, and a bearing is provided between the cap and the threaded guide rod.

[0014] Furthermore, the inner peripheral wall of the cover extends downward to form a flange that limits the movement of the spiral guide vane.

[0015] Furthermore, a gap is left between the spiral guide vane and the inner peripheral wall of the separation cylinder.

[0016] Furthermore, it also includes a control system, a servo motor connected to the threaded guide rod drive, and a flow monitoring device installed at the air inlet.

[0017] The beneficial effects of this invention are:

[0018] (1) The device of the present invention improves the traditional static device into a dynamic structure, which can adapt to the constantly changing production conditions and improve the applicability of the overall equipment. For variable working conditions, the device of the present invention can save equipment replacement costs.

[0019] (2) The device of the present invention improves the internal structure. Based on the separation mechanism of the separator, the variable pitch spiral guide vane is designed. There is no need to consider compatibility issues. The equipment is simple and can effectively improve the separation efficiency. Compared with changing or replacing the external structure, it can greatly reduce the manufacturing cost and is more convenient.

[0020] (3) The equipment of the present invention is combined with an intelligent control system for production. By monitoring changes in production conditions, the pitch of the spiral guide vane is changed in real time to achieve online optimization, maintain the best operating state of the equipment, improve separation efficiency, and realize fully automated pitch adjustment, saving manual operation and labor costs.

[0021] (4) The dynamic part of the device of the present invention adopts a simple mechanical structure and a simple thread mechanism. The threaded guide rod is rotated to drive the threaded collar to move. At the same time, the threaded collar clamps the spiral guide blade to realize the pitch change. It is convenient to produce, has low manufacturing cost, is easy to maintain, and the dynamic structure design is easy to install. It can be installed sequentially from the top. Attached Figure Description

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

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0026] Figure 4 This is an exploded view of the present invention;

[0027] Figure 5 This is a schematic diagram of the limiting cylinder.

[0028] Figure 6 This is a schematic diagram illustrating the working principle of the present invention;

[0029] In the picture:

[0030] 1. Separator cylinder; 101. Separation chamber; 102. Air inlet; 103. Underflow outlet;

[0031] 2. Threaded guide rod; 201, threaded section;

[0032] 3. Threaded collar;

[0033] 4. Spiral guide vane; 401, support groove;

[0034] 5. Limiting cylinder; 501. Slide groove; 502. Inner cylinder; 5021. Air outlet passage; 503. Outer cylinder; 504. Limiting part;

[0035] 6. Support rod;

[0036] 7. Cap; 701, flange;

[0037] 8. Seal the top cover;

[0038] 9. Mechanical seal;

[0039] 10. Bearings;

[0040] 11. Edge sealing. Detailed Implementation

[0041] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and directions and references, such as up, down, left, right, etc., are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0042] Example 1:

[0043] Figures 1-5 As shown, the present invention is a variable pitch gas-liquid separator based on intelligent control, including a separator body, the separator body including a separation cylinder 1 having a separation chamber 101, and the top end of the separation cylinder 1 having an air inlet 102 communicating with the separation chamber 101, and the bottom end having an underflow outlet 103 communicating with the separation chamber 101.

[0044] A hollow threaded guide rod 2 is rotatably disposed in the separation chamber 101. The outer peripheral wall of the threaded guide rod 2 has multiple threaded segments 201 along its axial direction, which can be three, four, or five segments, etc., and this embodiment does not limit this. The thread pitch on each of the multiple threaded segments 201 is different and gradually changes, that is, the thread pitch can gradually increase or gradually decrease from top to bottom. In this embodiment, there are three threaded segments 201, namely the first threaded segment, the second threaded segment, and the third threaded segment from top to bottom, and the pitch gradually increases. Each threaded segment 201 is threadedly connected to a threaded collar 3 that can move axially. Multiple threaded collars 3 are externally fixed with spiral guide vanes 4 that can extend and retract axially. The thread distribution of the threaded guide rod 2 is proportionally distributed, which allows for uniform control of the spiral guide vane 4 pitch. The spiral guide vane 4 plays a role in guiding flow and eliminating short-circuit flow when the separator is working, greatly improving the separation efficiency of the gas-liquid separator.

[0045] The spiral guide vane 4 can be made of spring steel or stainless steel, which can ensure that the spiral guide vane 4 has sufficient strength to resist the impact force of the airflow under the premise of axial expansion and contraction. Since most of the impact force of the airflow after entering the separator is absorbed by the wall of the separator cylinder 1, the spiral guide vane 4 only bears part of the pressure. The air velocity generally processed is 5 to 35 m / s, and the maximum pressure in the separator will not exceed 10,000 Pa. Compared with the deformation stress of these materials, it can be ignored.

[0046] When the threaded guide rod 2 rotates, the threaded collar 3 on it can move axially. When the threaded guide rod 2 rotates one revolution, the axial displacement distance of the threaded collar 3 on the large pitch thread section 201 is greater than the axial displacement distance of the threaded collar 3 on the small pitch thread section 201. Thus, the pitch of the helical guide vane 4 on the threaded collar 3 can be adjusted to increase or decrease the pitch, so as to achieve its axial stretching or compression.

[0047] In some examples, a limiting sleeve 5 is provided between the threaded collar 3 and the helical guide vane 4 to limit the rotation of the threaded collar 3 following the threaded guide rod 2, so that the threaded collar 3 only undergoes axial displacement during the rotation of the threaded guide rod 2.

[0048] In some examples, a support rod 6 is provided between each threaded collar 3 and the helical guide vane 4. The limiting cylinder 5 has a groove 501 along its axial direction for the support rod 6 to slide. The groove 501 restricts the movement direction of the threaded collar 3 by restricting the movement direction of the support rod 6, thereby preventing it from rotating. The threaded collar 3, the support rod 6 and the groove 501 are one-to-one and there are three of each in this embodiment. The length of each groove 501 is different. The extension length of the groove 501 is matched with the displacement length of its corresponding support rod 6 to reduce the amount of material entering the limiting cylinder 5. In order to facilitate the opening of the groove 501, three grooves 501 of the same length can be opened first, and then a sealing edge 11 can be inserted inside each groove 501 according to the required length.

[0049] In some examples, the limiting cylinder 5 has a double-layer structure, which includes an inner cylinder 502 and an outer cylinder 503 arranged coaxially, and a receiving cavity is formed between the two for accommodating the threaded guide rod 2 and the threaded collar 3. The bottom end of the receiving cavity is sealed to form a limiting part 504 for limiting the threaded collar 3. The limiting part 504 can limit the maximum downward displacement of the threaded collar 3 located at the bottom.

[0050] In some examples, the inner cylinder 502 has an axially through structure to form an outlet channel 5021 for gas to flow out, and the top of the inner cylinder 502 extends upward to the separation cylinder 1 for connecting the outlet pipe. The purified gas enters the outlet pipe from the outlet channel 5021 and is then discharged.

[0051] In some examples, there are multiple sets of support rods 6, the number of which corresponds to the number of threaded collars 3. The support rods 6 extend from the threaded collars 3 to the outer edge of the spiral guide vane 4 to support the spiral guide vane 4. The multiple sets of support rods 6 are evenly distributed circumferentially to effectively disperse stress and provide more stable support for the spiral guide vane 4. Each set of support rods 6 includes two support rods distributed vertically. The spiral guide vane 4 has multiple sets of support grooves 401 for the support rods 6 to be inserted. Each set of support grooves 401 includes two slots arranged opposite each other.

[0052] In some examples, the top of the separating cylinder 1 is provided with a cap 7 and a sealing top cover 8, and a mechanical seal 9 is provided between the two. The threaded guide rod 2 passes through the cap 7 and the sealing top cover 8, and a rolling bearing 10 is provided between the cap 7 and the threaded guide rod 2 to make the threaded guide rod 2 rotate smoothly.

[0053] In some examples, the inner peripheral wall of the cover 7 extends downward to form a flange 701 that limits the maximum upward displacement of the spiral guide vane 4.

[0054] In some examples, a gap is left between the spiral guide vane 4 and the inner peripheral wall of the separation cylinder 1, which facilitates the separation and discharge of droplets with the outer vortex, effectively improving the separation efficiency of the separator. Compared with the structure without annular gap, it can reduce pressure drop, reduce manufacturing difficulty, and facilitate disassembly and assembly.

[0055] In some examples, the gas-liquid separator also includes a control system, a servo motor connected to the threaded guide rod 2, and a flow monitoring device installed at the air inlet 102. The flow monitoring device feeds back the measured flow rate at the air inlet 102 to the control system, obtains the feed speed, and then feeds the signal back to the servo motor. The servo motor adjusts the pitch of the spiral guide vane 4 by adjusting the direction of the threaded guide rod 2, thereby maintaining the gas separation speed at the optimal value.

[0056] Working principle:

[0057] During operation, the airflow first enters the separation chamber 101 through the air inlet 102. The flow monitoring device feeds back the measured flow rate from the air inlet 102 to the control system. After obtaining the feed speed, the signal is fed back to the servo motor. The servo motor adjusts the pitch of the spiral guide vane 4 by adjusting the direction of the threaded guide rod 2. Figure 6 As shown, when the inlet speed is greater than the optimal separation speed, the pitch is increased; when the inlet speed is less than the optimal separation speed, the pitch is decreased, thereby maintaining the gas separation speed at the optimal value. Under the action of centrifugal force, the droplets are thrown against the cylinder wall and spiral down, and finally discharged from the underflow port 103. The purified gas enters the outlet through the outlet channel 5021 and is discharged.

[0058] When the threaded guide rod 2 rotates, the threaded collar 3 on it can move axially. When the threaded guide rod 2 rotates one revolution, the axial displacement distance of the threaded collar 3 on the large pitch thread section 201 is greater than the axial displacement distance of the threaded collar 3 on the small pitch thread section 201. Thus, the pitch of the helical guide vane 4 on the threaded collar 3 can be adjusted to increase or decrease the pitch.

[0059] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A variable pitch gas-liquid separator based on intelligent control, characterized in that: Includes a separator body, the separator body includes a separator cylinder (1) having a separation chamber (101), and the top end of the separator cylinder (1) is provided with an air inlet (102) communicating with the separation chamber (101), and the bottom end is provided with an underflow outlet (103) communicating with the separation chamber (101). A hollow threaded guide rod (2) is rotatably arranged in the separation chamber (101). The outer peripheral wall of the threaded guide rod (2) is provided with multiple threaded sections (201) along its axial direction. The thread pitch on the multiple threaded sections (201) is different and gradually changes. Each threaded section (201) is threadedly connected with a threaded collar (3) that can move along the axial direction. Multiple threaded collars (3) are fixed to the outside with spiral guide vanes (4) that can extend and retract along the axial direction. When the threaded guide rod (2) rotates, the threaded collar (3) on it can move axially. When the threaded guide rod (2) rotates one revolution, the axial displacement distance of the threaded collar (3) on the large pitch thread section (201) is greater than the axial displacement distance of the threaded collar (3) on the small pitch thread section (201). Thus, the pitch of the spiral guide vane (4) on the threaded collar (3) can be adjusted to increase or decrease the pitch, so as to achieve its axial stretching or compression.

2. The variable pitch gas-liquid separator based on intelligent control according to claim 1, characterized in that: A limiting sleeve (5) is provided between the threaded collar (3) and the spiral guide vane (4) to limit the rotation of the threaded collar (3) following the threaded guide rod (2).

3. A variable pitch gas-liquid separator based on intelligent control according to claim 2, characterized in that: Each threaded collar (3) is provided with a support rod (6) between it and the spiral guide vane (4), and the limiting cylinder (5) is provided with a groove (501) along its axial direction for the support rod (6) to slide.

4. A variable pitch gas-liquid separator based on intelligent control according to claim 2, characterized in that: The limiting cylinder (5) has a double-layer structure, which includes an inner cylinder (502) and an outer cylinder (503) arranged coaxially, and a receiving cavity is formed between the two for accommodating the threaded guide rod (2) and the threaded collar (3). The bottom end of the receiving cavity is sealed to form a limiting part (504) for limiting the threaded collar (3).

5. A variable pitch gas-liquid separator based on intelligent control according to claim 4, characterized in that: The inner cylinder (502) has an axial through structure to form an outlet channel (5021) for gas to flow out inside it, and the top of the inner cylinder (502) extends upward to form a separation cylinder (1) for connecting the outlet pipe.

6. A variable pitch gas-liquid separator based on intelligent control according to claim 3, characterized in that: There are multiple sets of support rods (6), the number of which corresponds to the number of threaded collars (3), and each set of support rods (6) includes two support rods distributed vertically. The spiral guide vane (4) has multiple sets of support grooves (401) for the support rods (6) to be inserted, and each set of support grooves (401) includes two slots arranged opposite to each other.

7. A variable pitch gas-liquid separator based on intelligent control according to claim 1, characterized in that: The top of the separation cylinder (1) is provided with a cap (7) and a sealing top cover (8), and a mechanical seal (9) is provided between the two. The threaded guide rod (2) passes through the cap (7) and the sealing top cover (8), and a bearing (10) is provided between the cap (7) and the threaded guide rod (2).

8. A variable pitch gas-liquid separator based on intelligent control according to claim 7, characterized in that: The inner peripheral wall of the cover (7) extends downward to form a flange (701) that limits the movement of the spiral guide vane (4).

9. A variable pitch gas-liquid separator based on intelligent control according to claim 1, characterized in that: A gap is left between the spiral guide vane (4) and the inner peripheral wall of the separation cylinder (1).

10. A variable pitch gas-liquid separator based on intelligent control according to claim 1, characterized in that: It also includes a control system, a servo motor that is connected to the threaded guide rod (2) for transmission, and a flow monitoring device installed at the air inlet (102).

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