Reinforced purging device for radar level gage in high-temperature area

Abstract

The utility model discloses a high temperature area radar level gauge reinforced purging device, the high temperature area radar level gauge reinforced purging device comprises a radar level gauge body, the lower end of the radar level gauge body is fixedly connected with a reinforcing cylinder, a probe antenna is fixedly arranged in the radar level gauge body, and the probe antenna is fixedly connected with the reinforcing cylinder. The lower end part of the probe antenna extends to the joint of the reinforcing cylinder and the radar level gauge body, a rotary protection part is fixedly arranged in the reinforcing cylinder at the lower end part of the probe antenna, and the rotary protection part is fixedly connected with the radar level gauge body; two air inlet connectors are arranged on the side wall, close to the radar level gauge body, of the reinforcing cylinder, and the two air inlet connectors are arranged in a staggered mode; the device has the advantages of simple structure, good radar probe purging effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of radar level meter purge devices, in particular to a high-temperature area radar level meter enhanced purge device. Background Art

[0002] In the actual production process, radar level meters often use two measurement schemes, one is high temperature PULS68 plus nitrogen purge direct measurement, the other is PULS69 or PULS64 penetrating mica board measurement. Although the temperature will be lower than 200°C during normal production, from the perspective of long-term operation safety, it is impossible to completely avoid the temperature rising to a very high level in the event of an accident. The pressure resistance of the mica board decreases at high temperature and there is a possibility of cracking. Therefore, the first measurement method has a wider range of applications.

[0003] For example, the Chinese patent with application number CN 202221521633.3 discloses a purging device for a level meter, including a radar level meter body, a flange and a bell mouth. A rotatable mounting plate is provided on the flange of the radar level meter, and an air outlet nozzle that can be raised and lowered is provided on the mounting plate, the air outlet nozzle is rotated to the bottom of the bell mouth, and the bell mouth is transported to the bell mouth, and the dirt and dust in the bell mouth are cleaned by high-pressure gas. This makes it convenient to clean the bell mouth, greatly improving the efficiency of maintenance, and regular maintenance can also increase the service life of the radar level meter, bringing great convenience to production work. In actual use, high-pressure gas can indeed purge and clean the dirt and dust in the bell mouth, but no corresponding protective structure is set near the probe antenna. When the feed is in a high dust state, a large amount of ultrafine powder will still adhere to the probe antenna in large quantities, resulting in unstable signals.

[0004] Therefore, a high temperature area radar level meter enhanced purge device is provided to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the utility model is that, at present, there is no corresponding protective structure near the probe antenna. When the feed is in a high dust state, a large amount of ultrafine powder will still adhere to the probe antenna, resulting in unstable signals. Therefore, a high temperature area radar level meter enhanced purge device is provided, and the high temperature area radar level meter enhanced purge device includes:

[0006] A radar level meter body, wherein the lower end of the radar level meter body is fixedly connected with a reinforcement cylinder, a probe antenna is fixedly arranged in the radar level meter body, the lower end of the probe antenna extends to the connection between the reinforcement cylinder and the radar level meter body, a rotation protection part is fixedly arranged in the reinforcement cylinder at the lower end of the probe antenna, the rotation protection part is fixedly connected to the radar level meter body, and two air inlet joints are arranged on the side wall of the reinforcement cylinder near the radar level meter body, and the two air inlet joints are staggered.

[0007] Furthermore, the radar level meter body and the reinforcement tube are connected by a flange, a first flange structure is provided at the end of the radar level meter body close to the reinforcement tube, and a second flange structure is provided at the end of the reinforcement tube close to the radar level meter body, and the first flange structure and the second flange structure are fixedly connected by bolts.

[0008] Furthermore, the rotating protection part includes an open-hole chassis, an open-hole protective cover, a wind-bearing arc plate, a swivel and a connecting column; the swivel is rotatably connected to the radar level meter body, the upper end of the connecting column is fixedly connected to the swivel, the lower end of the connecting column is fixedly connected to the open-hole chassis, the open-hole protective cover is fixedly installed on the outside of the connecting column, and the wind-bearing arc plate is fixedly installed on the connecting column.

[0009] Furthermore, the perforated shield is a semicircular structure, and the number of the perforated shields is two.

[0010] Furthermore, the number of the wind-bearing arc plates is two.

[0011] Furthermore, the number of the connecting columns is four, and the four connecting columns are evenly distributed on the swivel, the perforated shield is fixedly connected to two opposite connecting columns, and the wind-bearing arc plate is fixedly connected to the other two connecting columns.

[0012] Furthermore, the probe antenna is a hemispherical antenna.

[0013] Furthermore, a valve is provided on the air inlet connector, and the air inlet connector is connected to the air pump via a hose.

[0014] Furthermore, reinforcing ribs are evenly distributed on the side wall outside the reinforcement tube.

[0015] The implementation of this utility model has the following beneficial effects:

[0016] The utility model drives the rotating protection part to rotate on the radar level meter body by arranging a nitrogen flow sprayed by two staggered air inlet joints, thereby protecting the probe antenna and allowing the purge flow passing through the openings on the perforated shield to continuously sweep to various positions on the probe antenna. With the probe antenna being a hemispherical antenna structure, sufficient nitrogen purge is further strengthened on the premise of better anti-adhesion ability, thereby minimizing the influence of adhesion and achieving the best measurement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model structure;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 This is a structural diagram of the rotating protection part of the utility model;

[0020] Figure 4 It is a partial structural diagram of the rotating protection part of the utility model;

[0021] Figure 5 This is a structural diagram of the reinforcement tube of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0023] See also Figure 1-2 At present, there is no corresponding protective structure near the probe antenna. When the feed is in a high dust state, a large amount of ultrafine powder will still adhere to the probe antenna, resulting in unstable signals. Therefore, a high temperature area radar level meter enhanced purge device is provided, and the high temperature area radar level meter enhanced purge device includes:

[0024] A radar level meter body 1, the lower end of the radar level meter body 1 is fixedly connected with a reinforcement tube 4, a probe antenna 2 is fixedly arranged in the radar level meter body 1, the lower end of the probe antenna 2 extends to the connection between the reinforcement tube 4 and the radar level meter body 1, a rotation protection part is fixedly arranged in the reinforcement tube 4 at the lower end of the probe antenna 2, the rotation protection part and the radar level meter body 1 are fixedly connected, and two air inlet joints 5 are arranged on the side wall of the reinforcement tube 4 near the radar level meter body 1, and the two air inlet joints 5 are staggered.

[0025] The radar level meter body 1 and the reinforcement tube 4 are connected by a flange. A first flange structure 3 is provided at the end of the radar level meter body 1 close to the reinforcement tube 4, and a second flange structure is provided at the end of the reinforcement tube 4 close to the radar level meter body 1. The first flange structure 3 and the second flange structure are fixedly connected by bolts.

[0026] The rotating protection part includes an open-hole chassis 6, an open-hole protective cover 7, a wind-bearing arc plate 8, a swivel 9 and a connecting column 10; the swivel 9 is rotatably connected to the radar level meter body 1, the upper end of the connecting column 10 is fixedly connected to the swivel 9, the lower end of the connecting column 10 is fixedly connected to the open-hole chassis 6, the open-hole protective cover 7 is fixedly installed on the outside of the connecting column 10, and the wind-bearing arc plate 8 is fixedly installed on the connecting column 10.

[0027] The probe antenna 2 is a hemispherical antenna.

[0028] A valve 11 is also provided on the air inlet connector 5 , and the air inlet connector 5 is connected to the air pump via a hose 12 .

[0029] Reinforcing ribs 13 are evenly distributed on the side wall outside the reinforcement tube 4 .

[0030] In this embodiment, a nitrogen gas flow is sprayed from two staggered air inlet joints to drive the rotating protection part to rotate on the flange 3. While protecting the probe antenna 2, the purge gas flow passing through the openings on the perforated shield 7 continuously sweeps to various positions on the probe antenna 2. In conjunction with the hemispherical antenna structure of the probe antenna 2, sufficient nitrogen purge is further enhanced on the premise of better anti-adhesion ability, thereby minimizing the influence of adhesion and achieving the best measurement effect. Example

[0031] See also Figure 1-5 At present, there is no corresponding protective structure near the probe antenna. When the feed is in a high dust state, a large amount of ultrafine powder will still adhere to the probe antenna, resulting in unstable signals. Therefore, a high temperature area radar level meter enhanced purge device is provided, and the high temperature area radar level meter enhanced purge device includes:

[0032] A radar level meter body 1, the lower end of the radar level meter body 1 is fixedly connected with a reinforcement tube 4, a probe antenna 2 is fixedly arranged in the radar level meter body 1, the lower end of the probe antenna 2 extends to the connection between the reinforcement tube 4 and the radar level meter body 1, a rotation protection part is fixedly arranged in the reinforcement tube 4 at the lower end of the probe antenna 2, the rotation protection part and the radar level meter body 1 are fixedly connected, and two air inlet joints 5 are arranged on the side wall of the reinforcement tube 4 near the radar level meter body 1, and the two air inlet joints 5 are staggered.

[0033] The radar level meter body 1 and the reinforcement tube 4 are connected by a flange. A first flange structure 3 is provided at the end of the radar level meter body 1 close to the reinforcement tube 4, and a second flange structure is provided at the end of the reinforcement tube 4 close to the radar level meter body 1. The first flange structure 3 and the second flange structure are fixedly connected by bolts.

[0034] The rotating protection part includes an open-hole chassis 6, an open-hole protective cover 7, a wind-bearing arc plate 8, a swivel 9 and a connecting column 10; the swivel 9 is rotatably connected to the radar level meter body 1, the upper end of the connecting column 10 is fixedly connected to the swivel 9, the lower end of the connecting column 10 is fixedly connected to the open-hole chassis 6, the open-hole protective cover 7 is fixedly installed on the outside of the connecting column 10, and the wind-bearing arc plate 8 is fixedly installed on the connecting column 10.

[0035] The perforated shield 7 is a semicircular structure, and the number of the perforated shields 7 is two.

[0036] The number of the wind-bearing arc plates 8 is two.

[0037] There are four connecting columns 10 , which are evenly distributed on the swivel 9 . The perforated shield 7 is fixedly connected to two opposite connecting columns 10 , and the wind-bearing arc plate 8 is fixedly connected to the other two connecting columns 10 .

[0038] The probe antenna 2 is a hemispherical antenna.

[0039] A valve 11 is also provided on the air inlet connector 5 , and the air inlet connector 5 is connected to the air pump via a hose 12 .

[0040] Reinforcing ribs 13 are evenly distributed on the side wall outside the reinforcement tube 4 .

[0041] In this embodiment, a nitrogen gas flow is sprayed from two staggered air inlet joints to drive the rotating protection part to rotate on the flange 3. While protecting the probe antenna 2, the purge gas flow passing through the openings on the perforated shield 7 continuously sweeps to various positions on the probe antenna 2. In conjunction with the hemispherical antenna structure of the probe antenna 2, sufficient nitrogen purge is further enhanced on the premise of better anti-adhesion ability, thereby minimizing the influence of adhesion and achieving the best measurement effect.

[0042] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature area radar level meter enhanced purge device, characterized in that: It includes a radar level meter body, the lower end of which is fixedly connected to a reinforcement tube, a probe antenna is fixedly arranged in the radar level meter body, the lower end of the probe antenna extends to the connection between the reinforcement tube and the radar level meter body, a rotation protection part is fixedly arranged in the reinforcement tube at the lower end of the probe antenna, the rotation protection part is fixedly connected to the radar level meter body, and two air inlet joints are arranged on the side wall of the reinforcement tube close to the radar level meter body, and the two air inlet joints are staggered.

2. The enhanced purge device for high temperature area radar level meter according to claim 1, characterized in that: The radar level meter body and the reinforcement tube are connected by a flange, a first flange structure is provided at the end of the radar level meter body close to the reinforcement tube, a second flange structure is provided at the end of the reinforcement tube close to the radar level meter body, and the first flange structure and the second flange structure are fixedly connected by bolts.

3. The enhanced purge device for high temperature area radar level meter according to claim 2, characterized in that: The rotating protection part includes an open-hole chassis, an open-hole protective cover, a wind-bearing arc plate, a swivel and a connecting column; the swivel is rotatably connected to the radar level meter body, the upper end of the connecting column is fixedly connected to the swivel, the lower end of the connecting column is fixedly connected to the open-hole chassis, the open-hole protective cover is fixedly installed on the outside of the connecting column, and the wind-bearing arc plate is fixedly installed on the connecting column.

4. The enhanced purge device for high temperature area radar level meter according to claim 3, characterized in that: The perforated shield is a semicircular structure, and the number of the perforated shields is two.

5. The enhanced purge device for high temperature area radar level meter according to claim 4, characterized in that: The number of the wind-bearing arc plates is two.

6. The enhanced purge device for the high temperature area radar level meter according to claim 5, characterized in that: The number of the connecting columns is four, and the four connecting columns are evenly distributed on the swivel. The perforated shield is fixedly connected to two of the connecting columns that are opposite to each other, and the wind-bearing arc plate is fixedly connected to the other two connecting columns.

7. The enhanced purge device for high temperature area radar level meter according to claim 6, characterized in that: The probe antenna is a hemispherical antenna.

8. The enhanced purge device for the high temperature area radar level meter according to claim 7, characterized in that: The air inlet connector is also provided with a valve, and the air inlet connector is connected with the air pump through a hose.

9. The enhanced purge device for the high temperature area radar level meter according to claim 8, characterized in that: Reinforcing ribs are evenly distributed on the side wall outside the reinforcement tube.

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