An electrode type dust-proof level gauge

Abstract

The present invention provides an electrode type dust-proof level gauge, comprising: an electrode, a base, a first isolation tube and a first air inlet hole; the first isolation tube is sleeved outside the main body part of the electrode, the upper end of the first isolation tube is hermetically connected with the base, the inner wall of the first isolation tube and the main body part define a first air flow channel surrounding the main body part, and the first air flow channel extends along the axis direction of the first isolation tube to the lower end surface of the first isolation tube; the first air inlet hole is arranged on the base and communicated with the first air flow channel, and the first air inlet hole is used for connecting with an air supply device and introducing air flow into the first air flow channel. Through the arrangement of the first isolation tube, the present invention forms a first air flow channel outside the electrode, and an air flow isolation layer can be formed by supplying air through the air supply device, so as to achieve the effects of preventing dust adhesion, corrosion resistance and high temperature resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of level measurement, and particularly relates to an electrode type dust-proof level gauge. Background Art

[0002] After the carbon black is transported to the powder carbon black storage tank for storage in the carbon black production process and then enters the granulator for granulation, the storage volume of the carbon black in the powder carbon black storage tank cannot be measured continuously online. Currently, it is detected sectionally and hierarchically by an electrode type level gauge or a rotary vane type level gauge. Since the carbon black dust is easily adhered to the electrodes and the insulating layer of the level gauge, and the carbon black dust has certain conductivity, a short circuit is formed between the electrode and the tank body through the adhered carbon black dust, resulting in the failure of the electrode and the inability to judge the position of the material in the storage tank. Therefore, it is necessary to regularly clean the carbon black dust adhered to the electrodes and the insulating layer of the level gauge. Moreover, the insulating layer of the electrode type level gauge is easily deformed or cracked under the influence of the corrosive gas and high temperature in the storage tank, and it is more difficult to clean the adhered carbon black dust after deformation.

[0003] Therefore, in view of the above technical problems, it is necessary to provide a new level gauge. Summary of the Invention

[0004] The purpose of the present invention is to provide an electrode type dust-proof level gauge that can effectively prevent dust adhesion, is corrosion-resistant and high-temperature resistant, so as to solve the problems in the prior art.

[0005] In order to achieve the above purpose, the technical solution provided by the present invention is as follows:

[0006] An electrode type dust-proof level gauge for measuring the level of the material filled in a container, comprising:

[0007] An electrode, the electrode includes a wiring part, a mounting part and a main body part, and the wiring part and the main body part are respectively connected to both ends of the mounting part;

[0008] A base, the base is provided with a mounting hole, and the base is sleeved outside the electrode through the mounting hole, and the mounting part of the electrode is fixedly connected with the inner wall of the mounting hole in a matching manner;

[0009] A first isolation tube, the first isolation tube is sleeved outside the main body part of the electrode, the upper end of the first isolation tube is hermetically connected to the base, and the inner wall of the first isolation tube and the main body part define a first air flow channel surrounding the main body part, and the first air flow channel extends along the axis direction of the first isolation tube to the lower end surface of the first isolation tube;

[0010] A first air inlet hole, the first air inlet hole is arranged on the base and communicated with the first air flow channel, and the first air inlet hole is used for connecting with a gas supply device and introducing air flow into the first air flow channel.

[0011] Further, the mounting hole includes a first through hole, a second through hole, and a third through hole that are coaxially arranged and connected in sequence. The inner wall of the first through hole cooperates with the mounting portion to fix the electrode.

[0012] Further, the aperture of the second through hole is smaller than that of the third through hole. The inner wall of the third through hole and the main body portion define an installation groove for installing the first isolation tube.

[0013] Further, the upper end of the first isolation tube is bent outward to form a contact portion that cooperates with the top wall of the installation groove. The contact portion is hermetically connected to the top wall of the installation groove through a fixing member.

[0014] Further, the fixing member is sleeved outside the first isolation tube and cooperates with the installation groove to fix the first isolation tube.

[0015] Further, a second isolation tube is sleeved outside the first isolation tube, and the upper end of the second isolation tube is hermetically connected to the base.

[0016] Further, a second air flow channel is defined between the second isolation tube and the first isolation tube. A second air inlet hole communicating with the second air flow channel is provided on the side wall of the second isolation tube. The second air inlet hole is used to connect with a gas supply device and introduce air flow into the second air flow channel.

[0017] Further, the second air flow channel surrounds the outside of the first isolation tube and extends along the axis direction of the second isolation tube to the lower end surface of the second isolation tube.

[0018] Further, the wiring portion is located outside the mounting hole, and a cover body that cooperates with and fixes to the base is provided outside the wiring portion.

[0019] Further, a Teflon and / or silicone coating is provided on the outer surface of the electrode.

[0020] Advantages of the present invention:

[0021] Compared with the prior art, by providing a first isolation tube and a second isolation tube outside the electrode of the electrode type dust-proof level gauge of the present invention, a first air flow channel and a second air flow channel are formed. After supplying gas to the first air flow channel and the second air flow channel through a gas supply device, a double-layer isolation air flow layer is formed; the isolation air flow layer can not only prevent dust from adhering to the electrode, but also prevent corrosive gas in the storage tank from corroding the insulating coating on the outer surface of the electrode; and the purging effect of the air flow can also take away heat to achieve a cooling effect, thereby prolonging the service life of the level gauge. Description of the drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of an implementation manner of the present application;

[0024] Figure 2 is Figure 1 a partial structural diagram of the shown implementation manner;

[0025] Figure 3 is Figure 1 another partial structural diagram of the shown implementation manner.

[0026] Explanation of reference numerals: 10, electrode; 11, wiring part; 12, mounting part; 13, main body part; 20, base; 21, first through hole; 22, second through hole; 23, third through hole; 24, first air inlet hole; 30, first isolation tube; 31, abutting part; 32, first air flow channel; 40, second isolation tube; 41, second air flow channel; 42, second air inlet hole; 43, three-way pipe; 44, reducing pipe; 50, cover body; 61, gland; 62, gasket ring; 63, rubber gasket; 64, metal anti-expansion ring. Specific implementation manners

[0027] The following will describe the present invention in detail in conjunction with the implementation manners shown in the accompanying drawings. However, these implementation manners do not limit the present invention, and the structural, method, or functional transformations made by those of ordinary skill in the art based on these implementation manners are all included in the protection scope of the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. In the shown embodiments, the directions such as up, down, left, right, front, and back are relative and are used to explain the relative structures and movements of different components in the present application. When the components are in the positions shown in the figures, these representations are appropriate. However, if the description of the element positions changes, then it is considered that these representations will also change accordingly.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Referring to Figure 1 As shown, an electrode type dust-proof level gauge in an embodiment of the present invention includes: an electrode 10, a base 20, a cover body 50, a first isolation tube 30, and a second isolation tube 40.

[0031] Referring to Figure 2 As shown, the electrode 10 is made of a corrosion-resistant conductive material. It includes a wiring portion 11, a mounting portion 12, and a main body portion 13. The wiring portion 11 and the main body portion 13 are respectively formed by the mounting portion 12 extending along its axis towards both ends, and the outer surface of the mounting portion 12 is provided with threads. An insulating coating that completely covers the main body portion 13 is provided on the outer surface of the electrode 10, and the coating is a high-temperature resistant Teflon and / or silicone coating. A conductive component can also be externally connected or suspended at the lower end of the main body portion 13 of the electrode 10 to increase the measurement depth of the level gauge. Specifically, the manufacturing material of the electrode 10 is 36L stainless steel, the length of the electrode 10 is 1.75 m, the diameter of the mounting portion 12 of the electrode 10 is 16 mm, the diameter of the main body portion 13 of the electrode 10 is 20 mm, and the thickness of the coating is 0.2 mm.

[0032] The base 20 is provided with a mounting hole that penetrates its top wall and bottom wall. The base 20 is sleeved on the outside of the mounting portion 12 and the main body portion 13 of the electrode 10 through the mounting hole, and the wiring portion 11 of the electrode 10 is located outside the mounting hole. The mounting hole includes a first through hole 21, a second through hole 22, and a third through hole 23 that are coaxially arranged and sequentially connected. The aperture of the first through hole 21 is smaller than the aperture of the second through hole 22, and the aperture of the second through hole 22 is smaller than the aperture of the third through hole 23. Specifically, the manufacturing material of the base 20 is polytetrafluoroethylene, the length of the base 20 is 80 mm, the aperture of the first through hole 21 is 16 mm, the aperture of the second through hole 22 is 24 mm, and the aperture of the third through hole 23 is 42 mm.

[0033] The inner wall of the first through hole 21 is provided with threads that cooperate with the mounting portion 12 for fixing the electrode 10 to the base 20. A sealing gasket that cooperates with the top wall of the second through hole 22 and the top of the main body portion 13 is sleeved outside the mounting portion 12 of the electrode 10. By tightening the mounting portion 12, the sealing gasket is squeezed to achieve a sealed connection between the mounting portion 12 and the mounting hole. An annular chamber is defined between the inner wall of the second through hole 22 and the main body portion 13 of the electrode 10. On the outer side wall of the base 20 corresponding to the annular chamber, a first air inlet hole 24 that penetrates through to the annular chamber is provided, and the first air inlet hole 24 is used to connect to a gas supply device. An annular mounting groove is defined between the inner wall of the third through hole 23 and the main body portion 13 of the electrode 10, and the mounting groove is used to mount the first isolation tube 30. Specifically, the gas supply device can be a gas storage tank, an air compressor, etc.

[0034] The cover body 50 is mounted on the base 20. Threads that cooperate with each other are provided on the inner wall of the cover body 50 and the side wall of the base 20, so that the cover body 50 can be fixed on the base 20 and cover the outside of the wiring portion 11. A wiring hole that penetrates through to the inside of the cover body 50 is provided on the outer wall of the cover body 50. Specifically, the cover body 50 is made of polycarbonate.

[0035] The upper end of the first isolation tube 30 is bent outward to form an annular abutting portion 31 that cooperates with the top wall of the mounting groove. The first isolation tube 30 is sleeved outside the main body portion 13 of the electrode 10, and the abutting portion 31 abuts against the top wall of the mounting groove. A first air flow channel 32 that surrounds the main body portion 13 is defined between the inner wall of the first isolation tube 30 and the main body portion 13. The first air flow channel 32 extends along the axis direction of the first isolation tube 30 to the lower end surface of the first isolation tube 30 and communicates with the first air inlet hole 24. Specifically, the first isolation tube 30 is a polytetrafluoroethylene tube coaxially arranged with the main body portion 13 of the electrode 10, and the inner diameter of the first isolation tube 30 is 22 mm and the thickness is 1 mm.

[0036] Fixing members such as a gland 61, a spacer ring 62, a rubber gasket 63, and a metal anti-expansion ring 64 that cooperate with the mounting groove are sleeved outside the first isolation tube 30. Among them, the metal anti-expansion ring 64 is disposed close to the outside of the first isolation tube 30, the rubber gasket 63 is sleeved outside the metal anti-expansion ring 64, the upper ends of the metal anti-expansion ring 64 and the rubber gasket 63 abut against the abutting portion 31 of the first isolation tube 30, the spacer ring 62 abuts against the lower ends of the metal anti-expansion ring 64 and the rubber gasket 63, and the upper end of the gland 61 abuts against the spacer ring 62. Threads that cooperate with each other are provided on the outer surface of the gland 61 and the inner wall of the mounting cavity. By tightening the gland 61, the rubber gasket 63 and the abutting portion 31 are squeezed, thereby achieving a sealed connection between the first isolation tube 30 and the base 20. At the same time, the setting of the metal anti-expansion ring 64 can prevent the rubber gasket 63 from expanding radially after being squeezed, so that the first isolation tube 30 is deformed.

[0037] Reference Figure 3 As shown, the second isolation tube 40 is sleeved outside the first isolation tube 30, and the upper end of the second isolation tube 40 is hermetically connected to the base 20. The lower end of the second isolation tube 40 is flush with the lower end of the first isolation tube 30. A second air flow channel 41 surrounding the outside of the first isolation tube 30 is defined between the inner wall of the second isolation tube 40 and the first isolation tube 30, and the second air flow channel 41 extends along the axial direction of the second isolation tube 40 to the lower end face of the second isolation tube 40. A second air inlet hole 42 communicating with the second air flow channel 41 is formed in the side wall of the second isolation tube 40. The second air inlet hole 42 is used for connecting to a gas supply device and is configured to be able to introduce air flow into the second air flow channel 41. Specifically, the second isolation tube 40 is a 304 stainless steel tube coaxially arranged with the first isolation tube 30.

[0038] In this embodiment, the second isolation tube 40 is formed by combining a tee tube 43 and a reducing tube 44. The lower end of the main pipe of the tee tube 43 is fixedly connected to the upper end of the reducing tube 44 by a flange, and sealing treatments are performed at the joints of the flange with the tee tube 43 and the reducing tube 44, for example, by surfacing welding. The upper end of the main pipe of the tee tube 43 is fixedly connected to the lower end of the base 20 by a flange, and a sealing treatment is performed at the joint. The branch pipe of the tee tube 43 serves as the second air inlet hole 42. Specifically, the tee tube 43 is made of 304 stainless steel, the inner diameter of the main pipe of the tee tube 43 is 57 mm, and the inner diameter of the branch pipe is 15 mm; the reducing tube is made of 304 stainless steel, the maximum inner diameter of the reducing tube is 57 mm, and the minimum inner diameter is 45 mm.

[0039] Next, in combination with a specific usage scenario, the electrode 10 type dust-proof level gauge provided by the present invention will be further described.

[0040] During use, the level gauge is vertically installed on the material storage tank, and the lower end of the second isolation tube 40 extends into the material storage tank. The first air inlet hole 24 and the second air inlet hole 42 are respectively connected to the gas supply device. The gas supply device is turned on, and the air flow is introduced into the first air flow channel 32 and the second air flow channel 41 through the first air inlet hole 24 and the second air inlet hole 42, and the air pressure is adjusted to not less than 0.005 MPa, and the air flow rate is adjusted to not less than 0.2 m 3 / h. The air flows passing through the first air flow channel 32 and the second air flow channel 41 are respectively outside the main body portion 13 of the electrode 10 and the first isolation tube 30, and a double-layer isolation air flow layer surrounding the main body portion 13 of the electrode 10 and the first isolation tube 30 is formed, and this air flow layer isolates the dust from the main body portion 13.

[0041] In the dust-proof level gauge of the electrode 10 type provided by the present invention, a first isolation tube 30 and a second isolation tube 40 are arranged outside the electrode 10 to form a first air flow channel 32 and a second air flow channel 41. After supplying air (such as air, nitrogen, carbon dioxide, and inert gas, etc.) to the first air flow channel 32 and the second air flow channel 41 through a gas supply device, a double-layer isolation air flow layer is formed. Under the purging action of the isolation air flow layer, not only can dust adhesion on the electrode 10 be prevented, but also the corrosive gas in the storage tank can be prevented from corroding the insulating coating on the outer surface of the electrode 10. And the purging action of the air flow can also take away heat to achieve a cooling effect, thereby prolonging the service life of the level gauge.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. An electrode type dust-proof level gauge is used for measuring the level of materials filled in a container. It is characterized in that it includes: An electrode, the electrode includes a wiring part, a mounting part and a main body part, and the wiring part and the main body part are respectively connected to both ends of the mounting part; A base, the base is provided with a mounting hole, and the base is sleeved outside the electrode through the mounting hole, and the mounting part of the electrode is fixedly connected in cooperation with the inner wall of the mounting hole; A first isolation tube, the first isolation tube is sleeved outside the main body part of the electrode, the upper end of the first isolation tube is hermetically connected to the base, and the inner wall of the first isolation tube and the main body part define a first air flow channel surrounding the main body part, and the first air flow channel extends along the axis direction of the first isolation tube to the lower end surface of the first isolation tube; A first air inlet hole, the first air inlet hole is arranged on the base and communicated with the first air flow channel, and the first air inlet hole is used for connecting with a gas supply device and introducing air flow into the first air flow channel; The base includes a third through hole, and the inner wall of the third through hole and the main body part define an installation groove for installing the first isolation tube. The upper end of the first isolation tube is bent outwards to form a contact part that cooperates with the top wall of the installation groove. The contact part is hermetically connected to the top wall of the installation groove through a fixing member. The fixing member is sleeved outside the first isolation tube and cooperates with the installation groove to fix the first isolation tube; The fixing member includes a gland, a gasket ring, a rubber gasket and a metal anti-expansion ring. The metal anti-expansion ring is arranged close to the outside of the first isolation tube. The rubber gasket is sleeved outside the metal anti-expansion ring. The upper ends of the metal anti-expansion ring and the rubber gasket abut against the contact part of the first isolation tube. The gasket ring abuts against the lower ends of the metal anti-expansion ring and the rubber gasket. The upper end of the gland abuts against the gasket ring. Threads that cooperate with each other are provided on the outer surface of the gland and the inner wall of the installation groove. By tightening the gland, the rubber gasket and the contact part are extruded so that the first isolation tube and the base are hermetically connected; A second isolation tube is sleeved outside the first isolation tube. The upper end of the second isolation tube is hermetically connected to the base. A second air flow channel is defined between the second isolation tube and the first isolation tube. A second air inlet hole communicated with the second air flow channel is opened on the side wall of the second isolation tube. The second air inlet hole is used for connecting with a gas supply device and introducing air flow into the second air flow channel. The second air flow channel surrounds the outside of the first isolation tube and extends along the axis direction of the second isolation tube to the lower end surface of the second isolation tube.

2. The level gauge according to claim 1, It is characterized in that The mounting hole includes a first through hole, a second through hole and a third through hole that are coaxially arranged and connected in sequence. The inner wall of the first through hole cooperates with the mounting part to fix the electrode.

3. The level gauge according to claim 2, It is characterized in that The aperture of the second through hole is smaller than the aperture of the third through hole.

4. The level gauge according to claim 1, It is characterized in that The wiring part is located outside the mounting hole, and a housing that is fixedly matched with the base is sleeved outside the wiring part.

5. The level gauge according to claim 1, characterized in that a Teflon and / or silicone coating is provided on the outer surface of the electrode.

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