Purging and cleaning device for laser particle size analyzer

Abstract

The utility model relates to a cleaning technology of a laser particle size analyzer, and provides a blowing and cleaning device for a laser particle size analyzer in order to solve the problems that a blowing and cleaning device of an existing laser particle size analyzer is poor in mirror surface cleaning capacity, poor in blowing and cleaning effect and the like. Comprising an air inlet formed in a quartz glass mounting flange, an oil remover coaxially arranged at the front end of quartz glass and a pore plate arranged between the quartz glass mounting flange and a gate valve mounting flange; the degreaser is of a hollow circular truncated cone structure, the large end of the circular truncated cone is tightly attached to the quartz glass, an oil removing groove is formed in the outer circumference of the circular truncated cone, and a flow guide groove is further formed between the oil removing groove and the large end of the circular truncated cone; a gap exists between the small end of the circular truncated cone of the degreaser and the quartz glass mounting flange; the outlet end of the air inlet is connected with the oil removal tank, and an included angle is formed between the central axis of the air inlet and the cross section of the oil removal tank; an air guide hole is formed in the center of the pore plate, and the diameter of the air guide hole is smaller than the inner diameter of the small end of the degreaser circular truncated cone.

Description

Technical Field

[0001] The utility model relates to the cleaning technology of a laser particle size analyzer, in particular to a purging and cleaning device for a laser particle size analyzer. Background Technique

[0002] Laser particle size analyzers are mainly used in industrial production processes such as petrochemical industry, power plants, and metallurgy to detect and analyze the particulate matter generated.

[0003] In the catalytic unit of a refinery, a laser particle size analyzer is a key device for monitoring a gas turbine. Whether the gas turbine can operate normally in a long cycle directly relates to the energy consumption and benefits of the fluid catalytic cracking unit. The laser particle size analyzer is used to monitor the concentration and particle size of catalysts in the flue gas to protect the normal operation of the gas turbine. The correct installation of the laser particle size analyzer to enable it to perform its due working performance in a timely manner is one of the key technologies in the catalytic unit of a refinery.

[0004] The main problem of the currently used laser particle size analyzer is the mirror cleaning problem. Since a large amount of oily particulate matter is generated at the production site, these oily particulate matters will adhere to the mirror surface, seriously affecting the transmittance parameter of the instrument. The existing purging device on the laser particle size analyzer can only purge non-oily particulate matter, and the purging air generated cannot form a swirl, so it cannot effectively purge the oily particulate matter, resulting in a low transmittance of the quartz glass mirror surface on the laser particle size analyzer, weak mirror cleaning ability, poor purging and cleaning effect, and seriously affecting the system detection and analysis results. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problems such as the weak cleaning ability of the purging device of the existing laser particle size analyzer for its mirror surface, poor purging and cleaning effect, and inability to effectively purge oily particulate matter, and to propose a purging and cleaning device for a laser particle size analyzer.

[0006] To achieve the above purpose, the technical solution proposed by the utility model is as follows:

[0007] A purging and cleaning device for a laser particle size analyzer, wherein the quartz glass in the laser particle size analyzer is installed on a quartz glass mounting flange, and the quartz glass mounting flange is connected to the gate valve mounting flange at its front end. The purging and cleaning device is coaxially arranged between the quartz glass mounting flange and the gate valve mounting flange, and its special feature lies in:

[0008] It includes an air inlet hole opened on the side surface of the quartz glass mounting flange, an oil remover coaxially arranged at the front end of the quartz glass, and an orifice plate arranged between the quartz glass mounting flange and the gate valve mounting flange; the air inlet hole is used to connect external purging air;

[0009] The oil separator is a hollow frustum structure. The large end of the frustum is in close contact with the quartz glass. A circle of oil removal grooves is provided on the outer circumference of the frustum. A diversion groove is also provided between the oil removal groove and the large end of the frustum, which is used to divert and separate the water and oil substances in the external purge air through the diversion groove. There is a gap between the small end of the frustum of the oil separator and the inner wall of the quartz glass mounting flange, which is used to allow the external purge air to blow out from the gap.

[0010] The outlet end of the air inlet hole is connected to the oil removal groove, and there is an angle between the central axis of the air inlet hole and the radial cross-section of the oil separator, which is used to form a cyclone at the front end of the quartz glass when the blown purge air enters.

[0011] A wind guiding hole is provided at the central position of the orifice plate, and the diameter of the wind guiding hole is smaller than the inner diameter of the small end of the frustum of the oil separator.

[0012] Further, the angle between the central axis of the air inlet hole and the radial cross-section of the oil separator is 6° - 10°.

[0013] Further, the angle between the central axis of the air inlet hole and the radial cross-section of the oil separator is 8°.

[0014] Further, the inner diameter R1 of the small end of the frustum of the oil separator and the diameter R2 of the wind guiding hole satisfy the following formula:

[0015] R1 ≥ 2R2.

[0016] Further, gaskets are provided at the joints of the orifice plate with the quartz glass mounting flange and the gate valve mounting flange.

[0017] Further, an oil storage groove connected to the diversion groove is provided on the quartz glass mounting flange, which is used to store the water and oil substances diverted by the diversion groove.

[0018] The beneficial effects of the present utility model:

[0019] 【1】The purge cleaning device for a laser particle size analyzer of the present utility model has a simple structure, strong cleaning power and high cleaning efficiency. By providing an air inlet hole with an inclined angle on the quartz glass mounting flange, the blown air flow forms a cyclone. Then, the water and oil substances contained in the external purge air are discharged through the diversion groove under the centrifugal force of the cyclone air flow formed by the oil removal groove on the oil separator, so that the oil and gas are separated. At the same time, the cyclone air flow blown in can take away the micro particles in the external purge air, ensuring the cleanliness of the purge air acting on the surface of the quartz glass and effectively improving the mirror surface cleaning effect.

[0020] 【2】In the present utility model, an orifice plate is installed between the quartz glass mounting flange and the gate valve mounting flange. The diameter of the air guiding holes on the orifice plate is smaller than the inner diameter of the small end of the oil remover frustum, which can effectively enhance the pressure of the purging air acting on the surface of the quartz glass. Driven by the pressure difference on both sides of the orifice plate, the particulate matter leaves the quartz glass mirror surface. At the same time, the orifice plate can also block the micro particulate matter in the production site to prevent it from adhering to the quartz glass later, effectively improving the cleaning effect of the quartz glass mirror surface. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of an embodiment of a purging and cleaning device for a laser particle size analyzer according to the present utility model;

[0022] Figure 2 It is a schematic connection structural diagram of the quartz glass mounting flange, the oil remover, and the gate valve mounting flange in the embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the oil remover in the embodiment of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of the orifice plate in the embodiment of the present utility model;

[0025] Reference Signs:

[0026] 1 - Quartz glass, 2 - Quartz glass mounting flange, 3 - Gate valve mounting flange, 4 - Air inlet hole, 5 - Oil remover, 6 - Orifice plate, 7 - Oil removal tank, 8 - Flow guiding groove, 9 - Oil storage tank, 10 - Air guiding hole. Detailed Embodiment

[0027] As Figure 1 shown, a purging and cleaning device for a laser particle size analyzer, wherein: the quartz glass 1 in the laser particle size analyzer is installed on the quartz glass mounting flange 2, the quartz glass mounting flange 2 is connected to the gate valve mounting flange 3 at its front end, and the purging and cleaning device is coaxially arranged between the quartz glass mounting flange 2 and the gate valve mounting flange 3; the purging and cleaning device includes an air inlet hole 4 opened on the side of the quartz glass mounting flange 2, an oil remover 5 coaxially arranged at the front end of the quartz glass 1, and an orifice plate 6 arranged between the quartz glass mounting flange 2 and the gate valve mounting flange 3; the air inlet hole 4 is used to connect the external purging air;

[0028] As Figure 2 and Figure 3As shown, the oil separator 5 is a hollow frustum structure. The large end of the frustum is in close contact with the quartz glass 1. An oil removal groove 7 is provided on the outer circumferential surface of the frustum. A diversion groove 8 is also provided between the oil removal groove 7 and the large end of the frustum for diverting and separating the water and oil substances in the external purge air through the diversion groove 8. An oil storage groove 9 connected to the diversion groove 8 is provided on the quartz glass mounting flange 2 for storing the water and oil substances drained out by the diversion groove 8. There is a gap between the small end of the frustum of the oil separator 5 and the inner wall of the quartz glass mounting flange 2 for the external purge air to blow out from the gap.

[0029] The outlet end of the air inlet hole 4 is connected to the oil removal groove 7, and the angle between the central axis of the air inlet hole 4 and the radial section of the oil separator 5 is 8°, for causing the blown purge air to form a cyclone at the front end of the quartz glass 1. Its purpose is to make the blown purge air flow form a cyclone, and at the same time, the oil-containing sweat in the purge air is thrown out under the action of the centrifugal force formed by the cyclone, and the oil and gas are separated through the oil removal groove 7, so that the clean air blows to the surface of the optical quartz glass.

[0030] As Figure 4 shown, a wind guiding hole 10 is provided at the center position of the orifice plate 6, and the diameter of the wind guiding hole 10 is smaller than the inner diameter of the small end of the frustum of the oil separator 5. Thus, the purge air pressure in front of the optical glass is greatly enhanced, and the purge air drives the particulate matter to leave the quartz glass mirror surface under the action of the pressure difference on both sides of the orifice plate. At the same time, the orifice plate can also block the micro particulate matter in the production site to prevent it from adhering to the quartz glass, effectively improving the cleaning effect of the quartz glass mirror surface.

Claims

1. A purge cleaning device for a laser particle size analyzer, wherein the quartz glass (1) in the laser particle size analyzer is mounted on a quartz glass mounting flange (2), the quartz glass mounting flange (2) is connected to a gate valve mounting flange (3) at its front end, and the purge cleaning device is coaxially arranged between the quartz glass mounting flange (2) and the gate valve mounting flange (3), characterized in that: It comprises an air inlet (4) opened on the side of a quartz glass mounting flange (2), an oil remover (5) coaxially arranged at the front end of the quartz glass (1), and an orifice plate (6) arranged between the quartz glass mounting flange (2) and the gate valve mounting flange (3); the air inlet (4) is used to connect external purge air; The deoiler (5) is a hollow truncated cone structure, the large end of the truncated cone is in close contact with the quartz glass (1), a circle of deoiling grooves (7) is provided on the outer circumference of the truncated cone, and a guide groove (8) is provided between the deoiling groove (7) and the large end of the truncated cone, which is used to drain and separate water and oil in the external purge air through the guide groove (8); a gap is provided between the small end of the truncated cone of the deoiler (5) and the inner wall of the quartz glass mounting flange (2), which is used to allow the external purge air to be blown out through the gap; The outlet end of the air inlet (4) is connected to the degreasing groove (7), and an angle is formed between the central axis of the air inlet (4) and the radial cross section of the degreasing device (5), so that the blown purge air forms a cyclone at the front end of the quartz glass (1); An air guide hole (10) is provided at the center of the orifice plate (6), and the diameter of the air guide hole (10) is smaller than the inner diameter of the small end of the truncated cone of the oil remover (5).

2. A purging and cleaning device for a laser particle size analyzer according to claim 1, characterized in that: The angle between the central axis of the air inlet hole (4) and the radial cross section of the oil remover (5) is 6°-10°.

3. A purging and cleaning device for a laser particle size analyzer according to claim 2, characterized in that: The angle between the central axis of the air inlet hole (4) and the radial cross section of the oil remover (5) is 8°.

4. A purging and cleaning device for a laser particle size analyzer according to claim 3, characterized in that: The inner diameter R1 of the small end of the truncated cone of the oil remover (5) and the diameter R2 of the air guide hole (10) satisfy the following formula: R1≥2R2.

5. A purging and cleaning device for a laser particle size analyzer according to claim 4, characterized in that: Sealing gaskets are provided at the connection points between the orifice plate (6) and the quartz glass mounting flange (2) and the gate valve mounting flange (3).

6. A purging and cleaning device for a laser particle size analyzer according to claim 5, characterized in that: The quartz glass mounting flange (2) is provided with an oil storage groove (9) connected to the guide groove (8) and used for storing water and oil discharged from the guide groove (8).

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