A device for cleaning radar level gauge probes

Abstract

This utility model discloses a device for cleaning radar level gauge probes, including a level gauge body, a probe head installed at the lower end of the level gauge body, an upper flange installed on the level gauge body, and a steam cleaning sleeve fixedly connected to the bottom surface of the upper flange, which is sleeved on the outside of the probe head. The inner wall of the sleeve fits against the outer wall of the probe head and has a hollow structure. The upper and lower ends of its outer wall are respectively provided with a steam inlet and a steam outlet communicating with the inner cavity. A hollow blowing ring is installed at the bottom of the sleeve, with an air supply pipe on the outside of the blowing ring and a ring array of blowing holes located on the outer periphery of the bottom surface of the probe head on the inner side. A lower flange is connected to the bottom. This device addresses the problem that radar level gauge probes in reaction vessels are prone to crystallization due to low temperatures, making them difficult to clean and causing inaccurate measurements. It softens the crystals through heat transfer in the steam cleaning sleeve, and removes them by blowing air with the blowing ring. Steam can also be introduced into the blowing ring to enhance the cleaning effect. It eliminates the need for frequent disassembly, ensures measurement accuracy, reduces maintenance costs, and solves the pain point of difficult removal of stubborn crystals.

Description

Technical Field

[0001] This utility model relates to the field of probe cleaning technology, and in particular to a device for cleaning radar level gauge probes. Background Technology

[0002] A level gauge is an instrument used to measure liquid levels. The height of a liquid medium in a container is called the liquid level, which is generally measured using ultrasonic or radar level gauges. However, existing radar level gauges, when measuring the liquid level in a reaction vessel, suffer from several drawbacks. Due to the low temperature, a layer of volatile raw materials or reactants crystallizes on the probe surface, which cannot be removed promptly, leading to inaccurate level measurements. Furthermore, frequent disassembly and cleaning are not feasible with existing radar level gauges.

[0003] Chinese patent CN217512441U discloses an automatic cleaning device for ultrasonic and radar level gauge probes. This device includes a level gauge probe body and a cleaning assembly installed on the outside of the probe body. Nitrogen gas is transmitted to the inner end of an air bladder through an outlet pipe. The nitrogen gas then exits through various outlet holes, blowing air onto the probe head and generating airflow to blow off adhering crystals and dust, preventing radar wave interference. Simultaneously, some nitrogen gas inside the air bladder causes it to expand, increasing its volume and gradually adhering to the bottom of the probe head, isolating and protecting it from the temperature of the liquid being measured. However, during the cleaning of crystals, the device is inefficient because the crystals on the probe head surface have been present for a long time and have a stable chemical structure, making simple nitrogen blowing insufficient to remove stubborn crystals, resulting in low work efficiency.

[0004] Therefore, it is necessary to propose a device for cleaning the radar level gauge probe to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for cleaning radar level gauge probes, so as to solve the problem that simple nitrogen purging is difficult to remove crystals because they are relatively stable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A device for cleaning a radar level gauge probe includes a level gauge body, a probe head installed at the lower end of the level gauge body, an upper flange installed on the level gauge body, a steam cleaning sleeve fixedly connected to the bottom surface of the upper flange, the steam cleaning sleeve being sleeved on the outside of the probe head, and the inner wall of the steam cleaning sleeve being in contact with the outer wall of the probe head, the steam cleaning sleeve having a hollow internal structure, a steam inlet and a steam outlet fixedly installed at the upper and lower ends of the outer wall of the steam cleaning sleeve respectively and communicating with the inner cavity of the steam cleaning sleeve, a blower ring fixedly installed at the bottom of the steam cleaning sleeve, the blower ring having a hollow internal structure, an air supply pipe fixedly installed on the outside of the blower ring and communicating with the inner cavity of the blower ring, blower holes being provided on the inner side of the blower ring, the blower holes being arranged in a ring array on the outer periphery of the bottom surface of the probe head, and a lower flange fixedly connected to the bottom of the blower ring.

[0007] Preferably, a drain pipe is fixedly installed on the outer wall of the steam cleaning sleeve, the drain pipe is connected to the inner cavity of the steam cleaning sleeve, and a valve is installed on the drain pipe.

[0008] Preferably, a rubber conveying pipe is fixedly connected to the steam outlet, and the other end of the rubber conveying pipe passes through one side of the blower ring and communicates with the inner cavity of the blower ring.

[0009] Preferably, a through hole is provided in the middle of the lower flange, and the outer diameter of the bottom of the probe is smaller than the inner diameter of the through hole of the lower flange.

[0010] Preferably, the lower flange is fixedly installed on the surface of the reactor.

[0011] The technical effects and advantages of this utility model are as follows: In reactor level measurement scenarios, this device addresses the problem of stubborn crystals easily forming on the probe surface and the difficulty in frequent disassembly and cleaning. It utilizes a steam cleaning sleeve attached to the probe's outer wall, employing high-temperature steam heat transfer to soften the crystals. Combined with airflow from the annular array of blowing holes, this efficiently removes the crystals. The design of introducing steam through a rubber delivery pipe into the blowing ring further increases the probe surface temperature and uses steam moisture to flush away residual crystals, enhancing the cleaning effect. The drain pipe promptly removes condensate from the sleeve, preventing secondary contamination. The lower flange is fixed to the reactor surface, allowing for online cleaning without disassembly. This ensures the accuracy of the radar level gauge while reducing maintenance costs, solving the problem of nitrogen purging alone being insufficient to remove stubborn crystals. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the device for cleaning the probe of a radar level gauge according to the present invention.

[0013] Figure 2 This is a schematic cross-sectional view of the steam cleaning sleeve and probe of this utility model.

[0014] Figure 3 This is a schematic diagram of the external structure of the steam cleaning sleeve of this utility model.

[0015] Figure 4 This is a schematic diagram of the through hole structure of the lower flange of this utility model.

[0016] In the diagram: 1. Level gauge body; 2. Probe head; 3. Upper flange; 4. Steam cleaning sleeve; 5. Steam inlet; 6. Steam outlet; 7. Blowing ring; 8. Air supply pipe; 9. Blowing hole; 10. Lower flange; 11. Drain pipe; 12. Rubber delivery pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figures 1-4 The device shown is for cleaning a radar level gauge probe, including a level gauge body 1, a probe head 2 installed at the lower end of the level gauge body 1, an upper flange 3 installed on the level gauge body 1, a steam cleaning sleeve 4 fixedly connected to the bottom surface of the upper flange 3, the steam cleaning sleeve 4 being sleeved on the outside of the probe head 2, and the inner wall of the steam cleaning sleeve 4 being attached to the outer wall of the probe head 2, the steam cleaning sleeve 4 having a hollow internal structure, a steam inlet 5 and a steam outlet 6 fixedly installed at the upper and lower ends of the outer wall of the steam cleaning sleeve 4 respectively and communicating with the inner cavity of the steam cleaning sleeve 4, a blower ring 7 fixedly installed at the bottom of the steam cleaning sleeve 4, the blower ring 7 having a hollow internal structure, an air supply pipe 8 fixedly installed on the outside of the blower ring 7 and communicating with the inner cavity of the blower ring 7, blower holes 9 being provided on the inner side of the blower ring 7, the blower holes 9 being arranged in a ring array on the outer periphery of the bottom surface of the probe head 2, and a lower flange 10 fixedly connected to the bottom of the blower ring 7.

[0019] A drain pipe 11 is fixedly installed on the outer wall of the steam cleaning sleeve 4. The drain pipe 11 is connected to the inner cavity of the steam cleaning sleeve 4, and a valve is installed on the drain pipe 11.

[0020] A rubber conveying pipe 12 is fixedly connected to the steam outlet 6. The other end of the rubber conveying pipe 12 passes through one side of the blower ring 7 and communicates with the inner cavity of the blower ring 7.

[0021] A through hole is provided in the middle of the lower flange 10, and the outer diameter of the bottom of the probe head 2 is smaller than the inner diameter of the through hole of the lower flange 10.

[0022] The lower flange 10 is fixedly installed on the surface of the reactor.

[0023] In this embodiment of the invention, when cleaning the probe head 2, an external steam generator is first connected to the steam inlet 5. The high-temperature steam passes through the inner cavity of the steam cleaning sleeve 4 and transfers the high-temperature heat to the probe head 2, thus raising the surface temperature of the probe head 2. Meanwhile, the blowing ring 7 uses the air supply pipe 8 connected to the external blowing device to input air into the blowing ring 7. The air is blown towards the probe head 2 through the blowing hole 9, and together with the high-temperature steam, the crystals on the probe head 2 are cleaned.

[0024] During the cleaning of the probe head 2, high-temperature steam can also be transported to the inside of the blower ring 7 through the rubber delivery pipe 12 on the steam outlet 6. Combined with the blowing action of the blower ring 7, the steam is blown toward the probe head 2. On the one hand, this can further increase the surface temperature of the probe head 2, and on the other hand, the water in the steam can easily wash away the crystals on the surface of the probe head 2, preventing them from remaining on the probe head 2 and improving the cleaning effect.

[0025] After the high-temperature steam has been used to transfer heat to the probe head 2 for a long time, a certain amount of condensate will remain in the inner cavity of the steam cleaning sleeve 4. The condensate inside the steam cleaning sleeve 4 can be discharged through the drain pipe 11.

[0026] The working principle of this invention is as follows: A steam cleaning sleeve 4 is fitted around the outside of the probe head 2. High-temperature steam is introduced through the steam inlet 5 using an external steam generator. The steam transfers heat to the probe head 2 within the sleeve's inner cavity, raising its surface temperature to soften crystals. Simultaneously, a blowing ring 7 is connected to an external blowing device via an air supply pipe 8. Air is blown through the annular array of blowing holes towards the outer periphery of the probe head 2's bottom surface, working in conjunction with the high-temperature steam to remove crystals. Furthermore, the steam outlet guides steam into the blowing ring 7 through a rubber delivery pipe 12, further increasing the surface temperature of the probe head 2 and using the moisture in the steam to wash away residual crystals, achieving efficient cleaning of the probe head 2.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for cleaning a radar level gauge probe, comprising a level gauge body (1) having a probe head (2) mounted at its lower end, characterised in that: The liquid level gauge body (1) is equipped with an upper flange (3), and a steam cleaning sleeve (4) is fixedly connected to the bottom surface of the upper flange (3). The steam cleaning sleeve (4) is sleeved on the outside of the probe (2), and the inner wall of the steam cleaning sleeve (4) is attached to the outer wall of the probe (2). The steam cleaning sleeve (4) has a hollow structure inside. The upper and lower ends of the outer wall of the steam cleaning sleeve (4) are respectively fixedly installed with a steam inlet (5) and a steam outlet (6) and connected to the steam cleaning sleeve. The inner cavity of the sleeve (4) is connected. A blower ring (7) is fixedly installed at the bottom of the steam cleaning sleeve (4). The blower ring (7) has a hollow structure. An air supply pipe (8) is fixedly installed on the outside of the blower ring (7) and the air supply pipe (8) is connected to the inner cavity of the blower ring (7). A blower hole (9) is provided on the inner side of the blower ring (7). The blower hole (9) is arranged in a ring array on the outer periphery of the bottom surface of the probe head (2). A lower flange (10) is fixedly connected to the bottom of the blower ring (7).

2. A device for cleaning a radar level gauge probe according to claim 1, characterized in that: A drain pipe (11) is fixedly installed on the outer wall of the steam cleaning sleeve (4). The drain pipe (11) is connected to the inner cavity of the steam cleaning sleeve (4). A valve is installed on the drain pipe (11).

3. A device for cleaning a radar level gauge probe according to claim 1, characterized in that: A rubber conveying pipe (12) is fixedly connected to the steam outlet (6), and the other end of the rubber conveying pipe (12) passes through one side of the blower ring (7) and communicates with the inner cavity of the blower ring (7).

4. The apparatus for cleaning a radar level gauge probe according to claim 1, characterized in that: The lower flange (10) has a through hole in the middle, and the outer diameter of the bottom of the probe (2) is smaller than the inner diameter of the through hole of the lower flange (10).

5. The apparatus for cleaning a radar level gauge probe according to claim 1, characterized in that: The lower flange (10) is fixedly installed on the surface of the reactor.

Images