Isolation device and liquid storage tank

Abstract

The present invention belongs to the technical field of liquid level measurement auxiliary equipment, and specifically relates to an isolation device and a liquid storage tank, which are used to solve the technical problem of inaccurate liquid level measurement data. The isolation device and the liquid storage tank include a connecting ring and an isolation member, the isolation member is used to be sleeved on the outside of the liquid level meter, and at least a part of the isolation member is located in the tank body; the connecting ring is provided with an air inlet for compressed gas to enter and an air blow port for compressed gas to flow out, and the air blow port is configured to blow the condensed water condensed on the isolation member away from the outer surface of the isolation member. When the liquid in the tank body evaporates to generate steam, and the condensed water condensed from the steam adheres to the outer surface of the isolation member, the compressed gas enters from the air inlet, blows out from the air blow port, blows toward the outer surface of the isolation member, and blows the condensed water away from the outer surface of the isolation member, thereby avoiding the condensed water from interfering with the energy wave and avoiding the receiving probe from receiving a false reflection signal, thereby improving the accuracy of the liquid level measurement data.

Description

Technical Field

[0001] The invention relates to liquid level measurement auxiliary equipment technology, and in particular to an isolation device and a liquid storage tank. Background Art

[0002] In the petrochemical industry, tanks are often used to store liquids used in the production process, such as water or acid. In order to know the liquid level in the tank, a level meter is often installed on the installation pipe on the top of the tank, such as a radar level meter or an ultrasonic level meter. The transmitting probe of the level meter transmits energy waves, which are reflected by the liquid surface. The receiving probe of the level meter receives the reflected signal and then determines the liquid level based on the movement time of the energy wave.

[0003] As the liquid in the tank evaporates and produces steam, the condensed water formed after the steam condenses adheres to the transmitting probe of the liquid level meter, causing the energy wave to be reflected when it encounters the condensed water. The receiving probe receives a false reflection signal, resulting in inaccurate liquid level measurement results.

[0004] Therefore, it is urgent to solve the problem of inaccurate liquid level measurement data in related technologies. Summary of the invention

[0005] The embodiments of the present invention provide an isolation device and a liquid storage tank to solve the technical problem that the liquid inside the tank evaporates to form condensed water, which interferes with the measurement and causes inaccurate liquid level measurement data.

[0006] On the one hand, an embodiment of the present invention provides an isolation device, comprising: a connecting ring and an isolation member; the isolation member is used to be mounted on the outside of the liquid level gauge, and at least a portion of the isolation member is located inside the tank body; the connecting ring is provided with an air inlet for compressed gas to enter and an air blow port for the compressed gas to flow out, and the air blow port is configured to blow condensed water condensed on the isolation member away from the outer surface of the isolation member.

[0007] As described above, the isolation device, wherein the connecting ring is provided with an annular mounting piece, at least a portion of the isolation piece is located inside the annular mounting piece, the connecting ring is provided with an air injection channel, the annular mounting piece is provided with an air guide channel connected to the air injection channel, one end of the air injection channel is the air inlet, and the other end of the air guide channel is the air blowing port.

[0008] As described above, in the isolation device, there are multiple gas injection channels and multiple gas guide channels, multiple gas injection channels are arranged around the center line of the connecting ring, and multiple gas guide channels are arranged around the center line of the annular mounting member.

[0009] As described above, the isolation device, wherein the bottom surface of the connecting ring is provided with a first semi-annular channel, the first semi-annular channel is connected to the plurality of gas injection channels, a second semi-annular channel is provided on the connecting surface of the annular mounting member and the connecting ring, the second semi-annular channel is connected to the plurality of gas guide channels, and the first semi-annular channel and the second semi-annular channel are connected to form an annular channel.

[0010] In the isolation device as described above, the isolation member is a cylinder with an open top, and the air outlet is configured to blow condensed water condensed on the bottom surface of the cylinder away from the bottom surface of the cylinder.

[0011] As described above, the isolation device, wherein the isolation member is a hollow hammer, the cone tip of the hollow cone is located in the tank body; the connecting ring is provided with a plurality of the air inlets and a plurality of the air blowing ports, and at least two of the plurality of the air blowing ports are arranged opposite to each other on the connecting ring.

[0012] The isolation device as described above, wherein the connecting ring and the annular mounting member are integrally formed by injection molding; a first connecting hole is provided on the connecting ring, and a second connecting hole is provided on the annular mounting member, and the center line of the first connecting hole and the center line of the second connecting hole are colinearly arranged and are both parallel to the center line of the connecting ring; the connecting ring and the annular mounting member are connected to the tank body by bolts, and the bolts pass through the first connecting hole, the second connecting hole and the flange ring of the mounting pipe of the tank body in sequence.

[0013] In the isolation device as described above, a sealing ring is provided between the annular mounting member and the connecting ring.

[0014] As described above, the isolation device, wherein the bottom surface of the connecting ring is provided with a first annular groove, the connecting surface between the annular mounting member and the connecting ring is provided with a second annular groove, the first annular groove is directly opposite to the second annular groove, and the sealing ring is clamped in the first annular groove and the second annular groove.

[0015] On the other hand, an embodiment of the present invention further provides a liquid storage tank, comprising: a tank body and the isolation device as described above, wherein the isolation device is arranged on the tank body.

[0016] The isolation device and liquid storage tank provided by the embodiment of the present invention include a connecting ring and an isolating member, wherein the isolating member is used to be sleeved on the outside of the liquid level gauge, and at least a part of the isolating member is located in the tank body; the connecting ring is provided with an air inlet for compressed gas to enter and an air blow port for compressed gas to flow out, and the air blow port is configured to blow condensed water condensed on the isolating member away from the outer surface of the isolating member. When the liquid in the tank body evaporates to generate steam, and the condensed water condensed from the steam adheres to the outer surface of the isolating member, the compressed gas enters from the air inlet, blows out from the air blow port, and blows toward the outer surface of the isolating member, blowing the condensed water away from the outer surface of the isolating member, thereby preventing the condensed water from interfering with the energy wave and preventing the receiving probe from receiving a false reflection signal, thereby improving the accuracy of the liquid level measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A cross-sectional view of an isolation device provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of an application of an isolation device provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of another isolation device provided by an embodiment of the present invention;

[0021] Figure 4 A cross-sectional view of another isolation device provided by an embodiment of the present invention;

[0022] Figure 5 A top view of another isolation device provided by an embodiment of the present invention;

[0023] Figure 6 A cross-sectional view of another isolation device provided by an embodiment of the present invention;

[0024] Figure 7 A cross-sectional view of another isolation device provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1: Tank body;

[0027] 2: Liquid level gauge;

[0028] 3: Isolation parts;

[0029] 4: Connecting ring;

[0030] 5: Sealing ring;

[0031] 11: Install pipelines;

[0032] 31: conduction channel;

[0033] 32: air outlet;

[0034] 41: annular mounting member;

[0035] 42: air inlet;

[0036] 43: blowing port;

[0037] 44: gas injection channel;

[0038] 45: Annular channel;

[0039] 46: first connecting hole;

[0040] 411: air guide channel;

[0041] 412: second connecting hole;

[0042] 451: first semi-annular channel;

[0043] 452: Second semi-annular channel. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0045] In the petroleum industry, tanks are often used to store liquids used in the production process, such as water or acid. In order to know the liquid level in the tank, in the related technology, a liquid level meter is often installed on the installation pipe on the top of the tank, for example, a reflective liquid level meter such as a radar liquid level meter or an ultrasonic liquid level meter. The transmitting probe of the liquid level meter transmits energy waves, and the energy waves are reflected when they encounter the liquid surface. The receiving probe of the liquid level meter receives the reflected signal, and then determines the liquid level according to the movement time of the energy wave. Although the liquid level can be measured by using a liquid level meter, the liquid in the tank will evaporate and produce steam due to temperature changes and other reasons. The condensed water formed after the steam condenses adheres to the transmitting probe of the liquid level meter, causing the energy wave to reflect when it encounters the condensed water, and the receiving probe receives a false reflection signal, resulting in inaccurate liquid level measurement results. Therefore, maintenance personnel are required to remove the liquid level meter from the installation pipe and remove the condensed water on the transmitting probe, which increases the work intensity of maintenance personnel.

[0046] In view of this, the embodiment of the present application provides an isolation device and a liquid storage tank, in which the isolation device includes a connecting ring and an isolation member, the isolation member is sleeved on the outside of the liquid level meter, and at least a part of the isolation member is located in the tank body, so as to separate the liquid level meter and the liquid in the tank body, and prevent condensed water from adhering to the transmitting probe, but the condensed water will adhere to the outer surface of the isolation member, and the receiving probe will still receive a false reflection signal. Therefore, an air inlet and an air blow port are provided on the connecting ring, and the compressed gas flowing out of the air blow port can blow away the condensed water condensed on the outer surface of the isolation member, thereby preventing the condensed water from interfering with the energy wave, and the energy wave will be reflected only when it encounters the liquid surface, and the receiving probe receives the correct reflection signal, thereby improving the accuracy of the liquid level measurement data. In addition, maintenance personnel can remove the condensed water on the outer surface of the isolation member by injecting compressed gas into the air inlet, without having to disassemble the liquid level meter and the isolation device for cleaning, thereby reducing the labor intensity of maintenance personnel.

[0047] Please refer to Figure 1 and Figure 2 , Figure 1 A cross-sectional view of an isolation device provided by an embodiment of the present invention; Figure 2 Schematic diagram of the application of the isolation device provided by the embodiment of the present invention. Figure 1 and Figure 2 As shown, the isolation device provided in this embodiment includes a connecting ring 4 and an isolation member 3, wherein the isolation member 3 is used to be sleeved on the outside of the liquid level gauge 2, and at least a part of the isolation member 3 is located inside the tank body 1; the connecting ring 4 is provided with an air inlet 42 for compressed gas to enter and an air blow port 43 for compressed gas to flow out, and the air blow port 43 is configured to blow condensed water condensed on the isolation member 3 away from the outer surface of the isolation member 3.

[0048] Specifically, the liquid level meter 2 can be a radar level meter or an ultrasonic level meter. A mounting pipe 11 is provided on the top of the tank body 1. The transmitting probe of the liquid level meter 2 extends into the mounting pipe 11 to transmit energy waves into the tank body 1.

[0049] The isolator 3 may be in a regular shape such as a hollow hemisphere, a hollow prism, a hollow pyramid, or other irregular shapes, as long as the isolator 3 has a receiving cavity for accommodating the liquid level gauge 2. The top of the isolator 3 is also provided with an opening connected to the receiving cavity, and the transmitting probe of the liquid level gauge 2 extends from the opening into the receiving cavity, so that the isolator 3 is sleeved outside the liquid level gauge 2 to separate the liquid level gauge 2 from the liquid in the tank body 1, and to prevent the condensed water formed by the condensation of steam from adhering to the transmitting probe of the liquid level gauge 2.

[0050] The isolator 3 is made of a material that does not block the transmission of energy waves, so as to avoid the attenuation of energy waves after passing through the isolator 3, which results in a longer time for the energy waves to encounter the liquid surface and inaccurate liquid level detection. For example, the isolator 3 can be a fiberglass isolator, which has the advantages of light weight, small loss of energy waves, and good wave transmission performance; or, the isolator 3 can be made of a polymer material such as polytetrafluoroethylene. In addition, the outer surface of the isolator 3 can be coated with silicone grease or lubricant to prevent condensed water from adhering to the outer surface of the isolator 3.

[0051] The isolator 3 is connected to the connecting ring 4, and the connecting ring 4 is used to connect to the installation pipe 11, so that a part of the isolator 3 is accommodated in the tank body 1. The connecting ring 4 can be made of metal, or rubber or polymer material; the connection method between the isolator 3 and the connecting ring 4 can be welding, or can be screwed, clamped, or integrally formed by injection molding.

[0052] The air inlet 42 and the air outlet 43 are connected to form a flow channel, and the flow channel can be inclined. The present embodiment does not limit the shape and size of the air inlet 42, as long as the air inlet 42 can allow compressed gas to enter. For example, the air inlet 42 can be circular, square or triangular. Figure 1 Taking the orientation shown as an example, the air inlet 42 can be arranged on the top surface of the connecting ring 4, or the air inlet 42 can be arranged on the outer surface of the connecting ring 4. It is worth noting that when the air inlet 42 is arranged on the top surface of the connecting ring 4, the isolation member 3 and the liquid level gauge 2 located in the accommodating cavity do not block the air inlet 42, so that the compressed gas can be injected into the air inlet 42.

[0053] The blowing port 43 is arranged on the bottom surface of the connecting ring 4. When the connecting ring 4 is installed on the mounting pipe 11, the blowing port 43 is connected to the inside of the tank body 1, so that the compressed gas flowing out of the blowing port 43 can be blown onto the outer surface of the isolation member 3 located inside the tank body 1. The compressed gas can be compressed carbon dioxide, compressed air or compressed nitrogen, which is not limited in the present embodiment; the gas supply device for providing compressed gas can be a gas cylinder or an air bag. The gas supply device is connected to the air inlet 42. In order to allow the compressed gas flowing out of the gas supply device to flow into the air inlet 42 as much as possible, an inflation joint is also provided on the connecting ring 4. The outlet of the inflation joint is connected to the air inlet 42, and the inlet of the inflation joint is connected to the gas supply device, so that the sealing between the gas supply device and the air inlet 42 is good to prevent the compressed gas from dispersing. Among them, the inflation joint is a common structure in the relevant technology, and this embodiment will not be repeated here.

[0054] It is worth noting that the pressure value of the compressed gas needs to be set reasonably to avoid excessive pressure in the tank body 1, which may be dangerous; or a safety valve is set on the tank body 1, and the safety valve is connected to the inside of the tank body 1. The safety valve plays a role of pressure overload protection to unload when the pressure in the tank body 1 exceeds the specified value.

[0055] When in use, first, connect the connecting ring 4 to the installation pipe 11, a part of the isolating member 3 is located in the tank body 1, and then the liquid level gauge 2 is placed in the accommodating cavity. The working process of the isolation device is as follows: the liquid in the tank body 1 volatilizes to produce steam due to temperature changes and other reasons, and the steam rises and condenses into condensed water, which adheres to the outer surface of the isolating member 3 located in the tank body 1; the compressed gas entering from the air inlet 42 flows along the flow channel, and then blows out from the air outlet 43, blowing to the outer surface of the isolating member 3, and then blows away the condensed water, and the condensed water leaving the outer surface of the isolating member 3 falls into the tank body 1; the transmitting probe of the liquid level gauge 2 emits energy waves, and the energy waves are reflected when encountering the liquid surface in the tank body 1, and the receiving probe of the liquid level gauge 2 receives the reflected signal, and then determines the liquid level height according to the movement time of the energy wave.

[0056] The isolation device provided in this embodiment includes a connecting ring 4 and an isolating member 3, wherein the isolating member 3 is used to be sleeved on the outside of the liquid level gauge 2, and at least a part of the isolating member 3 is located in the tank body 1; the connecting ring 4 is provided with an air inlet 42 for compressed gas to enter and an air blow port 43 for compressed gas to flow out, and the air blow port 43 is configured to blow the condensed water condensed on the isolating member 3 away from the outer surface of the isolating member 3. When the liquid in the tank body 1 evaporates to generate steam, and the condensed water condensed from the steam adheres to the outer surface of the isolating member 3, the compressed gas enters from the air inlet 42, blows out from the air blow port 43, and blows toward the outer surface of the isolating member 3, blowing the condensed water away from the outer surface of the isolating member 3, thereby preventing the condensed water from interfering with the energy wave and preventing the receiving probe from receiving a false reflection signal, thereby improving the accuracy of the liquid level measurement data.

[0057] In addition, maintenance personnel can remove condensed water on the outer surface of the isolation member 3 by injecting compressed gas into the air inlet 42, without having to dismantle the liquid level meter 2 and the isolation device for cleaning, thereby reducing the labor intensity of maintenance personnel.

[0058] Please refer to Figure 1-Figure 6 , Figure 3 A schematic diagram of another isolation device provided by an embodiment of the present invention; Figure 4 A cross-sectional view of another isolation device provided by an embodiment of the present invention; Figure 5 A top view of another isolation device provided by an embodiment of the present invention; Figure 6 A cross-sectional view of another isolation device provided in an embodiment of the present invention. In this embodiment, an annular mounting member 41 is provided on the connecting ring 4, at least a portion of the isolation member 3 is located in the annular mounting member 41, an air injection channel 44 is provided on the connecting ring 4, an air guide channel 411 connected to the air injection channel 44 is provided on the annular mounting member 41, and one end of the air injection channel 44 (i.e. Figure 3 The left end of the air guide passage 411 is the air inlet 42, and the other end of the air guide passage 411 (i.e. Figure 3 The bottom end of the ring 41 is the air outlet 43. Thus, on the one hand, the strength of the connecting ring 4 can be increased by providing the annular mounting member 41; on the other hand, since a part of the isolating member 3 is located in the annular mounting member 41, the air outlet 43 can be easily configured to blow the condensed water condensed on the isolating member 3 away from the outer surface of the isolating member 3, and the air outlet 43 has more diverse forms.

[0059] The structure of the annular mounting member 41 is similar to that of the connecting ring 4, and the material of the annular mounting member 41 is similar to that of the connecting ring 4, which will not be described in detail here. The connection between the annular mounting member 41 and the connecting ring 4 can be welding, screw connection, or integrally formed by injection molding. The preferred implementation of this embodiment is that the annular mounting member 41 and the connecting ring 4 are integrally formed by injection molding, so that they become a whole and are reliably connected.

[0060] The gas injection channel 44 can be arranged obliquely, or parallel to the horizontal plane, or Figure 6 As shown, the gas injection channel 44 includes a first channel and a second channel that are vertically connected, the center line of the first channel is parallel to the horizontal plane, and the center line of the second channel is perpendicular to the horizontal plane; the gas guide channel 411 is similar to the gas injection channel 44, and can also be set inclined, parallel to the horizontal plane, or as shown in FIG. Figure 6 As shown, the air guide channel 411 includes a third channel and a fourth channel which are vertically connected, the center line of the third channel is perpendicular to the horizontal plane, and the center line of the fourth channel is parallel to the horizontal plane.

[0061] Each shape of the gas injection channel 44 can be combined with various shapes of the gas guide channel 411, as long as the gas injection channel 44 and the gas guide channel 411 are connected, so that the compressed gas flows along the gas injection channel 44 and the gas guide channel 411. Figure 6 As shown, exemplarily, the gas injection channel 44 includes a first channel and a second channel connected vertically, the gas guide channel 411 includes a third channel and a fourth channel connected vertically, the end of the first channel away from the second channel is the air inlet 42, the end of the fourth channel away from the third channel is the air blowing port 43, and the third channel is connected to the second channel. It is worth noting that there is a gap between the inner side surface of the annular mounting member 41 and the outer surface of the isolating member 3 to prevent the outer surface of the isolating member 3 from blocking the air blowing port 43.

[0062] There can be multiple gas injection channels 44 and gas guide channels 411, multiple gas injection channels 44 are arranged around the center line of the connecting ring 4, and multiple gas guide channels 411 are arranged around the center line of the annular mounting member 41. By increasing the number of gas injection channels 44 and gas guide channels 411, compressed gas can be injected into the multiple gas injection channels 44, and the compressed gas is blown out from the multiple blowing ports 43, so that the condensed water on the outer surface of the isolation member 3 can be quickly blown away.

[0063] Optionally, each gas guide channel 411 may be connected to a gas injection channel 44. Figure 3-Figure 5, a first semi-annular channel 451 is provided on the bottom surface of the connecting ring 4, and the first semi-annular channel 451 is connected to multiple gas injection channels 44, and a second semi-annular channel 452 is provided on the connecting surface of the annular mounting member 41 and the connecting ring 4, and the second semi-annular channel 452 is connected to multiple gas guide channels 411, and the first semi-annular channel 451 and the second semi-annular channel 452 are connected to form an annular channel 45. In this way, multiple gas injection channels 44 are connected to each other through the first semi-annular channel 451, and multiple gas guide channels 411 are connected to each other through the second semi-annular channel 452. Even if compressed gas is injected into one of the gas injection channels 44, the compressed gas can enter the multiple gas guide channels 411 along the first semi-annular channel 451 and the second semi-annular channel 452, and then blown out from multiple blowing ports 43 to blow to different positions on the outer surface of the isolation member 3. Exemplarily, there are four gas injection channels 44 and ten gas guide channels 411.

[0064] The cross-sections of the first semi-annular channel 451 and the second semi-annular channel 452 along the direction perpendicular to the center line of the connecting ring 4 can be regular shapes such as semicircular, rectangular, etc., or can be other irregular shapes; when the cross-sections of the first semi-annular channel 451 and the second semi-annular channel 452 are both semicircular, the cross-section of the annular channel 45 formed by the connection of the first semi-annular channel 451 and the second semi-annular channel 452 is circular.

[0065] Continue to refer to Figure 6 In a possible embodiment, the isolating member 3 is a cylinder with an opening at the top, and the air outlet 43 is configured to blow the condensed water condensed on the bottom surface of the cylinder away from the bottom surface of the cylinder. With such a configuration, the air flow blown out from the air outlet 43 can blow away the condensed water on the bottom surface of the cylinder, thereby preventing the condensed water on the bottom surface of the cylinder from interfering with the energy wave and preventing the receiving probe from receiving a false reflection signal. The center line of the air outlet 43 is parallel to the bottom surface of the cylinder, and the air outlet 43 is directly opposite to the bottom end of the side wall of the cylinder.

[0066] Continue to refer to Figure 3 and Figure 4 In another possible embodiment, the isolating member 3 is a hollow hammer, and the cone tip of the hollow cone is located in the tank body 1; at least two of the multiple blowing ports 43 are arranged oppositely on the connecting ring 4. In this arrangement, the outer surface of the isolating member 3 is a curved surface, and the cone tip is located in the tank body 1. The condensed water condensed on the outer surface of the hollow cone is blown away from the outer surface by the compressed gas blown out of the blowing port 43, or the condensed water slides along the outer surface to the cone tip under the action of the airflow formed by the compressed gas. Since the condensed water is difficult to accumulate at the cone tip, it leaves the outer surface and falls into the tank body 1, thereby preventing the condensed water from interfering with the energy wave.

[0067] In addition, the airflows blown out from the two oppositely arranged air outlets 43 can act on the relative positions of the outer surface of the hollow cone respectively, so as to prevent the airflow from being unable to blow to the position away from the air outlet 43. It is worth noting that when the air guide channel 411 is tilted, the angle between the center line of the air guide channel 411 and the center line of the hollow cone is greater than 1 / 2 of the cone angle, so as to prevent the airflow from flowing parallel to the outer surface, so that the airflow can blow to the outer surface of the hollow cone.

[0068] In the above embodiment, the connection ring 4 and the annular mounting member 41 can be connected to the installation pipe 11 by welding or by screwing. Since the installation pipe 11 is provided with a flange ring, the preferred implementation of this embodiment is that the connection ring 4 and the annular mounting member 41 are connected to the tank body 1 by bolts, the connection ring 4 is provided with a first connection hole 46, the annular mounting member 41 is provided with a second connection hole 412, the center line of the first connection hole 46 and the center line of the second connection hole 412 are collinearly arranged and are both parallel to the center line of the connection ring 4, and the bolts pass through the first connection hole 46, the second connection hole 412 and the flange ring of the installation pipe 11 on the tank body 1 in sequence. By the above arrangement, the connection ring 4, the annular mounting member 41 and the installation pipe 11 are connected by bolts, and the connection method is simple.

[0069] In this embodiment, the liquid level meter 2 can be clamped in the accommodating cavity, or the liquid level meter 2 is screwed or welded to the connecting ring 4. When the liquid level meter 2 is a HQ-51L-B type radar liquid level meter, since the HQ-51L-B type radar liquid level meter is provided with a flange ring, the preferred connection method between the liquid level meter 2 and the connecting ring 4 is bolted.

[0070] During installation, first, place the annular mounting part 41 on the bottom surface of the connecting ring 4, and make a part of the isolating part 3 located in the annular mounting part 41; then, place the annular mounting part 41 and the connecting ring 4 on the flange ring of the mounting pipe 11, and make a part of the isolating part 3 located in the tank body 1; next, place the flange ring on the HQ-51L-B radar level gauge on the connecting ring 4, and place the transmitting probe into the accommodating cavity of the isolating part 3; then, adjust the HQ-51L-B radar level gauge, the connecting ring 4 and the annular mounting part 41, so that the flange hole of the flange ring on the HQ-51L-B radar level gauge, the first connecting hole 46, the second connecting hole 412 and the flange hole of the flange ring on the mounting pipe 11 are aligned, and the bolts are passed through in turn and matched with the nuts to achieve a tight connection.

[0071] Continue to refer to Figure 3 and Figure 4A sealing ring 5 is provided between the annular mounting member 41 and the connecting ring 4. The sealing ring 5 can seal the gap between the connecting ring 4 and the annular mounting member 41 to prevent dust and other impurities from entering the flow channel along the gap, so as to prevent impurities from being blown to the outer surface of the isolation member 3, causing the energy wave to be blocked by the impurities.

[0072] Optionally, the sealing ring 5 may be a metal sealing ring 5; or, the sealing ring 5 may be made of a highly elastic material such as plastic or rubber, which has good elasticity and good buffering capacity, and can allow the connecting ring 4 and the annular mounting member 41 to withstand a higher extrusion pressure.

[0073] When the annular mounting member 41 is screwed to the connecting ring 4, the elastic sealing ring 5 can be clamped between the connecting ring 4 and the annular mounting member 41. The bottom surface of the connecting ring 4 is provided with a first annular groove, and the connecting surface of the annular mounting member 41 and the connecting ring 4 is provided with a second annular groove, the first annular groove is directly opposite to the second annular groove, and the sealing ring 5 is clamped in the first annular groove and the second annular groove, so as to prevent the sealing ring 5 from escaping from between the connecting ring 4 and the annular mounting member 41, and achieve sealing. Among them, the cross-section of the first annular groove and the second annular groove along the direction perpendicular to the center line of the connecting ring 4 can be regular shapes such as circular and square, or other irregular shapes, and this embodiment does not limit this. Of course, the sealing ring 5 can also be bonded between the connecting ring 4 and the annular mounting member 41.

[0074] In addition, please refer to Figure 7 , Figure 7 A cross-sectional view of another isolation device provided by an embodiment of the present invention. Figure 7 As shown, the isolation member 3 may also be provided with a conducting channel 31 connected to the gas injection channel 44, and the isolation member 3 is provided with an outlet 32 ​​connected to the conducting channel 31 on the outer surface facing the tank body 1. The compressed gas enters the gas injection channel 44 from the air inlet 42, flows into the conducting channel 31 along the gas injection channel 44, and then flows out from the outlet 32, thereby blowing off the condensed water attached to the outer surface of the isolation member 3.

[0075] When the connecting ring 4 is provided with a plurality of gas injection channels 44, the conducting channel 31 can extend along the isolating member 3 and penetrate the isolating member 3, and the conducting channel 31 is simultaneously connected with the plurality of gas injection channels 44, so that the plurality of gas injection channels 44 are mutually connected, so as to facilitate the injection of compressed gas into the conducting channel 31. At the same time, the compressed gas in the tank body 1 can also enter the conducting channel 31 from the gas outlet 32, and then flow out from the gas injection channel 44, so as to avoid excessive pressure in the tank body 1.

[0076] Furthermore, there may be multiple air outlets 32, and compressed gas is blown out from the multiple air outlets 32, thereby quickly blowing away the condensed water on the outer surface of the isolation member 3. In addition, water-blocking cotton may be provided at the air outlet 32, and the water-blocking cotton absorbs the condensed water attached to the air outlet 32, thereby preventing the condensed water from entering the conduction channel 31 from the air outlet 32. The water-blocking cotton may be made of sponge, or may be made of woven fabric or asbestos, and this embodiment does not limit this.

[0077] Reference Figures 1 to 7 An embodiment of the present invention further provides a liquid storage tank, including a tank body 1 and an isolation device, wherein the isolation device is arranged on the tank body 1, wherein the structure and function of the isolation device have been described in detail in the above embodiments and will not be repeated here.

[0078] The liquid storage tank provided by the embodiment of the present invention comprises a tank body 1 and an isolation device, wherein the isolation device comprises a connecting ring 4 and an isolation member 3, wherein the isolation member 3 is used to be sleeved on the outside of the liquid level gauge 2, and at least a part of the isolation member 3 is located inside the tank body 1; the connecting ring 4 is provided with an air inlet 42 for compressed gas to enter and an air blow port 43 for compressed gas to flow out, and the air blow port 43 is configured to blow condensed water condensed on the isolation member 3 away from the outer surface of the isolation member 3. When the liquid in the tank body 1 evaporates to generate steam, and the condensed water condensed from the steam adheres to the outer surface of the isolation member 3, the compressed gas enters from the air inlet 42, blows out from the air blow port 43, and blows toward the outer surface of the isolation member 3, blowing the condensed water away from the outer surface of the isolation member 3, thereby preventing the condensed water from interfering with the energy wave and preventing the receiving probe from receiving a false reflection signal, thereby improving the accuracy of the liquid level measurement data.

[0079] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0080] In the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding, it can be a mechanical connection, it can be an electrical connection, or it can communicate with each other; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An isolation device, characterized in that: include: Connecting rings and spacers; The isolating member is used to be sleeved on the outside of the liquid level meter, and at least a part of the isolating member is located inside the tank body; The connecting ring is provided with an air inlet for compressed gas to enter, the connecting ring is provided with an annular mounting member, at least a part of the isolating member is located in the annular mounting member, the connecting ring is provided with an air injection channel, the annular mounting member is provided with an air guide channel connected with the air injection channel, one end of the air injection channel is the air inlet, and the other end of the air guide channel is an air blowing port, and the air blowing port is configured to blow condensed water condensed on the isolating member away from the outer surface of the isolating member; There are multiple gas injection channels and multiple gas guide channels, multiple gas injection channels are arranged around the center line of the connecting ring at intervals, and multiple gas guide channels are arranged around the center line of the annular mounting member at intervals; The isolation member is provided with a conducting channel connected to the gas injection channel. The conducting channel extends along and passes through the isolation member, and the conducting channel is simultaneously connected to a plurality of the gas injection channels. The isolation member is provided with a gas outlet connected to the conducting channel on its outer surface facing the tank body.

2. The isolation device according to claim 1, characterized in that: A first semi-annular channel is provided on the bottom surface of the connecting ring, and the first semi-annular channel is connected to the multiple gas injection channels. A second semi-annular channel is provided on the connecting surface of the annular mounting part and the connecting ring, and the second semi-annular channel is connected to the multiple gas guide channels. The first semi-annular channel and the second semi-annular channel are connected to form an annular channel.

3. The isolation device according to claim 1, characterized in that: The isolating member is a cylinder with an open top, and the air blowing port is configured to blow condensed water condensed on the bottom surface of the cylinder away from the bottom surface of the cylinder.

4. The isolation device according to claim 1, characterized in that: The isolating member is a hollow hammer, and the tip of the hollow cone is located in the tank body; the air inlet and the air blowing port are both provided in plurality, and at least two of the plurality of air blowing ports are arranged opposite to each other on the connecting ring.

5. The isolation device according to any one of claims 1 to 4, characterized in that: The connecting ring and the annular mounting piece are integrally formed by injection molding; a first connecting hole is provided on the connecting ring, and a second connecting hole is provided on the annular mounting piece, and the center line of the first connecting hole and the center line of the second connecting hole are colinearly arranged and are both parallel to the center line of the connecting ring; the connecting ring and the annular mounting piece are connected to the tank body by bolts, and the bolts pass through the first connecting hole, the second connecting hole and the flange ring of the mounting pipe of the tank body in sequence.

6. The isolation device according to claim 1, characterized in that: A sealing ring is provided between the annular mounting member and the connecting ring.

7. The isolation device according to claim 6, characterized in that The bottom surface of the connecting ring is provided with a first annular groove, the connecting surface of the annular mounting piece and the connecting ring is provided with a second annular groove, the first annular groove is directly opposite to the second annular groove, and the sealing ring is clamped in the first annular groove and the second annular groove.

8. A liquid storage tank, characterized in that: include: A tank body and an isolation device as described in any one of claims 1 to 7, wherein the isolation device is arranged on the tank body.

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