Electric contact type liquid level meter and manufacturing method thereof

Abstract

The invention provides an electric contact type liquid level meter and a manufacturing method thereof. The electric contact type liquid level meter is used for detecting the liquid level height of liquid lead bismuth in a container and comprises a liquid level meter body, a stainless steel cylindrical table, a plurality of insulating electrode columns and a plurality of adjustable locking pieces. A mounting hole is formed in the liquid level meter main body; the stainless steel cylindrical table is located in the mounting hole and fixedly connected with the liquid level meter body in a sealed mode, and a plurality of avoiding through holes are formed in the stainless steel cylindrical table; each insulating electrode column comprises an adjusting part, a connecting part and a detecting part which are connected in sequence, and the connecting part of each insulating electrode column is arranged in the corresponding avoiding through hole in a penetrating manner and is fixedly connected with the hole wall of the avoiding through hole in a sealing manner; the lengths of the detection parts of the plurality of insulated electrode columns are different; the adjustable locking piece is movably connected with the adjusting part and abuts against the second end face of the stainless steel cylindrical table. The electric contact type liquid level meter not only has better applicability, but also has better use stability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric contact type liquid level gauges, and in particular to an electric contact type liquid level gauge and a manufacturing method thereof. Background Art

[0002] Liquid level meter is a device used to measure the height of liquid materials. It is widely used in many industries such as chemical, petroleum, pharmaceutical, water treatment, fire protection, food, energy, etc. Among them, the electric contact liquid level meter can directly measure the liquid level in the container, with the characteristics of high accuracy, strong stability and wide application range.

[0003] However, the electric contact type liquid level meter in the related art can only measure a single liquid level or requires a large installation space. It is difficult to install in a narrow container or pipeline and measure multiple liquid levels at the same time, which makes the applicability of the electric contact type liquid level meter poor. In addition, when measuring the liquid level of high-temperature, highly corrosive liquid lead and bismuth, the liquid lead and bismuth are easy to corrode the electrodes of the liquid level meter, resulting in measurement errors of the electric contact type liquid level meter, or adhesion of different electrodes and penetration into the interior of the electric contact type liquid level meter, thereby causing the liquid level meter to short-circuit and fail, greatly reducing the stability of the use of the electric contact type liquid level meter. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide an electric contact type liquid level meter and a manufacturing method thereof which not only has good applicability but also has good stability in use.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] An electric contact type liquid level meter, used for detecting the liquid level height of liquid lead or bismuth in a container, the electric contact type liquid level meter comprising:

[0007] A liquid level meter body, wherein the liquid level meter body is formed with a mounting hole;

[0008] A stainless steel cylindrical platform, the stainless steel cylindrical platform is located in the mounting hole and is sealed and fixedly connected to the liquid level meter body, and the stainless steel cylindrical platform is provided with a plurality of avoidance through holes;

[0009] The electric contact type liquid level meter also includes:

[0010] A plurality of insulating electrode columns, each of which comprises an adjusting portion, a connecting portion and a detecting portion connected in sequence, the connecting portion of each insulating electrode column being inserted into the corresponding avoiding through hole and being sealed and fixedly connected to the hole wall of the avoiding through hole, the adjusting portion being located in the mounting hole, the detecting portion being located outside the first end face of the stainless steel cylindrical platform, and the outer peripheral wall of the connecting portion being formed with a high temperature resistant insulating coating; the detecting portions of the plurality of insulating electrode columns are arranged with different lengths;

[0011] A plurality of adjustable locking members, each of which is located in the mounting hole and sleeved on the adjusting portion of the corresponding insulating electrode column, the adjustable locking member is movably connected to the adjusting portion, and the adjustable locking member abuts against the second end surface of the stainless steel cylindrical platform.

[0012] In one embodiment, the connecting part includes a first connecting part and a second connecting part, the outer peripheral walls of the first connecting part and the second connecting part are both formed with the high-temperature resistant insulating coating, the two ends of the first connecting part are respectively fixedly connected to the first ends of the adjusting part and the second connecting part, the second end of the second connecting part is fixedly connected to the detecting part, the diameter of the cross section of the first connecting part is smaller than the diameter of the avoidance through hole, the diameter of the cross section of the second connecting part is larger than the diameter of the avoidance through hole, and the first connecting part is penetrated through the avoidance through hole and is sealed and fixedly connected to the hole wall of the avoidance through hole.

[0013] In one embodiment, the liquid level meter body includes a flange, an electrical electrode assembly and a stainless steel connecting sleeve. The flange is provided with a plurality of electrical through holes. The number of the electrical electrode assemblies is a plurality. The plurality of electrical electrode assemblies are respectively inserted into the corresponding electrical through holes and are sealed and fixedly connected to the flange. The mounting hole is formed in the stainless steel connecting sleeve. One end of the stainless steel connecting sleeve is sealed and fixedly connected to the flange. The other end of the stainless steel connecting sleeve is sleeved and sealed and fixedly connected to the stainless steel cylindrical table to form a sealed cavity together. Each of the electrical electrode assemblies is electrically connected to the adjustment portion of the corresponding insulating electrode column through the mounting hole, and the adjustment portion is located in the sealed cavity.

[0014] In one embodiment, the electric contact type liquid level gauge further comprises a plurality of electrical connection components, and the plurality of electrical connection components are all disposed in the sealed cavity, and the two ends of the plurality of electrical connection components are respectively fixed and electrically connected to the corresponding power electrode components and the corresponding adjustment parts of the insulating electrode columns.

[0015] In one embodiment, each of the electrical connection components includes an electrical connector and an insulating sleeve, the insulating sleeve is sleeved on the electrical connector, and two ends of the electrical connector are respectively fixed and electrically connected to the power electrode assembly and the adjustment portion of the insulating electrode column.

[0016] In one embodiment, two adjacent insulating electrode posts are arranged at a preset distance, and the preset distance is greater than or equal to 5 mm.

[0017] In one of the embodiments, the outer peripheral wall of the stainless steel cylindrical platform is laser welded to the hole wall of the mounting hole.

[0018] In one embodiment, the connecting portion of each insulating electrode column is welded to the hole wall of the corresponding avoidance through hole by vacuum active brazing.

[0019] A method for manufacturing an electric contact type liquid level gauge, used for manufacturing the electric contact type liquid level gauge described in any of the above embodiments, the method for manufacturing the electric contact type liquid level gauge comprising:

[0020] Assembling to obtain the liquid level meter body;

[0021] Installing a plurality of the insulating electrode columns in the corresponding avoidance through holes;

[0022] The plurality of adjustable locking members are sleeved on the corresponding adjusting parts of the insulating electrode columns and are movably connected to the adjusting parts;

[0023] Moving the insulating electrode column relative to the stainless steel cylindrical platform to adjust the position of the detection portion of the insulating electrode column in the container until the detection portion of the insulating electrode column reaches a preset position;

[0024] Sealing and fixing each of the insulating electrode posts to the hole wall of the corresponding avoidance through hole;

[0025] The stainless steel cylindrical platform is installed in the installation hole and welded to the hole wall of the installation hole.

[0026] In one embodiment, the specific steps of moving the insulating electrode column relative to the stainless steel cylindrical platform until the detection portion of the insulating electrode column reaches a preset position include:

[0027] Adjusting the adjustable locking member;

[0028] The insulating electrode column is moved relative to the stainless steel cylindrical platform until the detection portion of the insulating electrode column reaches a preset position of the container.

[0029] In one embodiment, the specific steps of sealing and fixing each of the insulating electrode columns to the hole wall of the corresponding avoidance through hole include:

[0030] The connecting portion of each insulating electrode column is welded to the hole wall of the corresponding avoidance through hole by vacuum active brazing.

[0031] Compared with the prior art, the present invention has the following advantages, including but not limited to:

[0032] 1. The above-mentioned electric contact type liquid level gauge includes several insulating electrode columns, each insulating electrode column includes an adjusting part, a connecting part and a detecting part connected in sequence, the connecting part of each insulating electrode column is penetrated into the corresponding avoidance through hole and fixedly connected to the hole wall of the avoidance through hole, the adjusting part is located in the mounting hole, the detecting part is located on the outer side of the first end face of the stainless steel cylindrical table, the outer peripheral wall of the connecting part is formed with a high temperature resistant insulating coating, and the lengths of the detecting parts of several insulating electrode columns are set differently. Compared with the liquid level gauge in the related art, the electric contact type liquid level gauge disclosed in the present invention can measure multiple liquid level heights, and can also obtain the liquid level difference according to the measured different liquid level heights, so that the electric contact type liquid level gauge disclosed in the present invention can monitor the liquid level changes of liquid lead and bismuth in the container, thereby expanding the scope of application of the electric contact type liquid level gauge disclosed in the present invention and greatly improving the applicability of the electric contact type liquid level gauge disclosed in the present invention.

[0033] 2. Since the connecting part of each insulating electrode column is sealed and fixedly connected to the hole wall of the corresponding avoidance through hole, when the electric contact type liquid level meter measures the liquid level height of corrosive substances such as liquid lead and bismuth, it can effectively prevent the liquid lead bismuth vapor or the liquid lead bismuth overflowing due to the liquid level out of control from entering the interior of the electric contact type liquid level meter through the gap between the insulating electrode column and the stainless steel cylindrical table, which greatly reduces the possibility of the electric contact type liquid level meter being damaged or even broken, thereby greatly improving the use stability of the electric contact type liquid level meter.

[0034] 3. Since each adjustable locking member is located in the mounting hole and is sleeved on the adjusting portion of the corresponding insulating electrode column, the adjustable locking member is movably connected to the adjusting portion, and the adjustable locking member abuts against the second end surface of the stainless steel cylindrical table, so that before the insulating electrode column and the stainless steel cylindrical table are sealed and fixed, the operator can adjust the length of the detecting portion of the insulating electrode column located in the container by adjusting the adjustable locking member, that is, the operator can adjust the length of the detecting portion 330 of the insulating electrode column located in the container according to the liquid level height to be measured, so that the detecting portion of the insulating electrode column can be located at a preset position of the container, further improving the applicability of the electric contact type liquid level meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a schematic structural diagram of an electric contact type liquid level meter according to an embodiment;

[0037] Figure 2 for Figure 1 A partial enlarged schematic diagram of the electric contact type liquid level gauge shown;

[0038] Figure 3 for Figure 1 The internal structure diagram of the electric contact type liquid level gauge shown;

[0039] Figure 4 for Figure 3 A partial enlarged schematic diagram of the electric contact type liquid level gauge shown;

[0040] Figure 5 for Figure 4 Another partial enlarged schematic diagram of the electric contact type liquid level gauge shown;

[0041] Figure 6 for Figure 5 Another partial enlarged schematic diagram of the electric contact type liquid level gauge shown;

[0042] Figure 7 for Figure 1 The schematic diagram of the partial structure of the electric contact type liquid level gauge shown in FIG.

[0043] Figure 8 for Figure 1 Another partial structural schematic diagram of the electric contact type liquid level gauge shown;

[0044] Fig. 9 for Figure 8 Another perspective schematic diagram of the electric contact type liquid level gauge shown;

[0045] Fig.10 The present invention is a step diagram of a manufacturing method of an electric contact type liquid level gauge;

[0046] Fig.11 This is a physical schematic diagram of an electric contact type liquid level gauge.

[0047] Figure numbers: 10, electric contact type liquid level gauge; 100, liquid level gauge body; 110, mounting hole; 120, flange; 121, power connection hole; 130, power connection electrode assembly; 131, power connection electrode; 132, alumina ceramic tube; 133, conical stainless steel ring; 140, stainless steel connecting sleeve; 200, stainless steel cylindrical table; 210, avoidance hole; 300, insulating electrode column; 310, adjustment part; 311, threaded abutment surface; 320, connecting part; 321, first connecting part; 322, second connecting part; 330, detection part; 400, adjustable locking member; 410, threaded hole; 500, sealing chamber; 600, electrical connection assembly; 610, electrical connection member; 620, insulating sleeve. DETAILED DESCRIPTION

[0048] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0051] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0052] like Figures 1 to 9As shown, an electric contact type liquid level gauge 10 of an embodiment is used to detect the liquid level height of liquid lead and bismuth in a container. The electric contact type liquid level gauge 10 includes a liquid level gauge body 100, a stainless steel cylindrical platform 200, a plurality of insulating electrode columns 300 and a plurality of adjustable locking members 400; the liquid level gauge body 100 is formed with a mounting hole 110; the stainless steel cylindrical platform 200 is located in the mounting hole 110 and is sealed and fixedly connected to the liquid level gauge body 100, and the stainless steel cylindrical platform 200 is provided with a plurality of avoidance through holes 210; each An insulating electrode column 300 includes an adjusting portion 310, a connecting portion 320 and a detecting portion 330 connected in sequence. The connecting portion 320 of each insulating electrode column 300 is inserted into the corresponding avoidance through hole 210 and is sealed and fixedly connected to the hole wall of the avoidance through hole 210, so that when the electric contact type liquid level meter 10 measures the liquid level height of corrosive substances such as liquid lead and bismuth, it can effectively prevent the liquid lead and bismuth vapor or the liquid lead and bismuth overflowing due to the loss of liquid level control from passing through the insulating electrode column 300 and the stainless steel round The gaps between the column bases 200 and the gaps between the stainless steel cylindrical base 200 and the hole wall of the mounting hole 110 enter the interior of the electric contact type liquid level gauge 10, which greatly reduces the possibility of damage or even destruction of the electric contact type liquid level gauge 10, thereby greatly improving the use stability of the electric contact type liquid level gauge 10; the adjustment part 310 is located in the mounting hole 110, the detection part 330 is located on the outside of the first end face of the stainless steel cylindrical base 200, and the outer peripheral wall of the connecting part 320 is formed with a high temperature resistant insulating coating (not shown) to electrically isolate the connecting part 320, prevent the connecting part 320 from direct contact and conduction with the liquid lead bismuth and the stainless steel cylindrical base 200, ensure the accuracy of the measurement signal, and thus improve the accuracy and stability of the measurement; at the same time, the high temperature resistant insulating coating can also protect the connecting part 320 from corrosion or damage, extend the service life of the electric contact type liquid level gauge 10, and prevent false alarms caused by the influence of conductive substances, further improving the use stability of the electric contact type liquid level gauge 10.

[0053] like Figures 1 to 9As shown, further, the lengths of the detection parts 330 of the several insulating electrode columns 300 are set differently. Compared with the liquid level meter in the related art, the electric contact type liquid level meter 10 of the present invention can measure multiple liquid level heights, and can also obtain the liquid level difference according to the measured different liquid level heights, so that the electric contact type liquid level meter 10 of the present invention can monitor the liquid level change of the liquid lead and bismuth in the container, thereby expanding the application scope of the electric contact type liquid level meter 10 of the present invention and greatly improving the applicability of the electric contact type liquid level meter 10 of the present invention; each adjustable locking member 400 is located in the mounting hole 110 and is sleeved on the adjustment part 31 of the corresponding insulating electrode column 300. 0, the adjustable locking member 400 is movably connected to the adjusting portion 310, and the adjustable locking member 400 abuts against the second end surface of the stainless steel cylindrical platform 200, so that before the insulating electrode column 300 and the stainless steel cylindrical platform 200 are sealed and fixed, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking member 400, that is, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container according to the liquid level height to be measured, so that the detecting portion 330 of the insulating electrode column 300 can be located at a preset position of the container, further improving the applicability of the electric contact type liquid level meter 10.

[0054] In this embodiment, the connecting portion 320 of the insulating electrode column 300 is passed through the corresponding avoidance through hole 210 and fixedly connected to the hole wall of the avoidance through hole 210, and the lengths of the detecting portions 330 of several insulating electrode columns 300 are set differently, so that the electric contact type liquid level gauge 10 can measure multiple liquid level heights, and at the same time, the liquid level difference can be obtained according to the measured different liquid level heights, so that the electric contact type liquid level gauge 10 can monitor the liquid level changes of liquid lead bismuth in the container.

[0055] By sealing and fixing the connecting portion 320 of the insulating electrode column 300 with the hole wall of the avoidance through hole 210, when the electric contact type liquid level meter 10 measures the liquid level height of corrosive substances such as liquid lead and bismuth, it can effectively prevent liquid lead bismuth vapor or liquid lead bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level meter 10 through the gap between the insulating electrode column 300 and the stainless steel cylindrical table 200, thereby greatly reducing the possibility of the electric contact type liquid level meter 10 being damaged or even destroyed, thereby greatly improving the use stability of the electric contact type liquid level meter 10.

[0056] Before sealing and fixing the insulating electrode column 300 to the stainless steel cylindrical table 200, the operator can adjust the length of the detection portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking piece 400, that is, the operator can adjust the length of the detection portion 330 of the insulating electrode column 300 located in the container according to the liquid level height to be measured, so that the detection portion 330 of the insulating electrode column 300 can be located at a preset position of the container, further improving the applicability of the electric contact liquid level meter 10.

[0057] The electric contact type liquid level gauge 10 comprises a plurality of insulating electrode columns 300, each of which comprises an adjusting portion 310, a connecting portion 320 and a detecting portion 330 which are connected in sequence, and the connecting portion 320 of each insulating electrode column 300 is inserted into the corresponding avoidance through hole 210 and fixedly connected to the hole wall of the avoidance through hole 210, the adjusting portion 310 is located in the mounting hole 110, the detecting portion 330 is located on the outer side of the first end surface of the stainless steel cylindrical platform 200, and the outer peripheral wall of the connecting portion 320 is formed with High temperature resistant insulating coating, the lengths of the detection parts 330 of several insulating electrode columns 300 are set differently. Compared with the liquid level meter in the related art, the electric contact liquid level meter 10 disclosed in the present invention can measure multiple liquid level heights, and can also obtain the liquid level difference according to the measured different liquid level heights, so that the electric contact liquid level meter 10 disclosed in the present invention can monitor the liquid level changes of liquid lead and bismuth in the container, thereby expanding the application scope of the electric contact liquid level meter 10 disclosed in the present invention and greatly improving the applicability of the electric contact liquid level meter 10 disclosed in the present invention.

[0058] Furthermore, since the connecting portion 320 of each insulating electrode column 300 is sealed and fixedly connected to the hole wall of the corresponding avoidance through hole 210, when the electric contact type liquid level gauge 10 measures the liquid level height of corrosive substances such as liquid lead and bismuth, it can effectively prevent liquid lead bismuth vapor or liquid lead bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the insulating electrode column 300 and the stainless steel cylindrical platform 200, thereby greatly reducing the possibility of the electric contact type liquid level gauge 10 being damaged or even destroyed, thereby greatly improving the use stability of the electric contact type liquid level gauge 10.

[0059] Furthermore, since each adjustable locking member 400 is located in the mounting hole 110 and is sleeved on the adjusting portion 310 of the corresponding insulating electrode column 300, the adjustable locking member 400 is movably connected to the adjusting portion 310, and the adjustable locking member 400 abuts against the second end surface of the stainless steel cylindrical table 200, so that before the insulating electrode column 300 and the stainless steel cylindrical table 200 are sealed and fixed, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking member 400, that is, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container according to the liquid level height to be measured, so that the detecting portion 330 of the insulating electrode column 300 can be located at a preset position of the container, thereby further improving the applicability of the electric contact type liquid level meter 10.

[0060] It is understandable that liquid lead and bismuth are highly corrosive and can easily corrode austenitic steel. Figure 1 As shown, in the present embodiment, the material of the insulating electrode column 300 is martensitic steel. Compared with the commonly used austenitic steel, martensitic steel has the advantages of high strength, high hardness, high thermal stability, etc., and is suitable for use in high-temperature liquid lead-bismuth environments. In addition, due to the low nickel content, martensitic steel has excellent resistance to liquid lead-bismuth corrosion, and can also effectively prevent the insulated electrode column 300 from being deformed due to factors such as liquid lead-bismuth corrosion, thereby greatly improving the use stability of the electric contact type liquid level meter 10.

[0061] like Figure 7 As shown, in this embodiment, the adjusting portion 310 , the connecting portion 320 and the detecting portion 330 are an integrated structure to improve the compactness of the structure of the insulating electrode column 300 .

[0062] like Figure 6 As shown, in the present embodiment, the adjustable locking member 400 is formed with a threaded hole 410, the adjusting portion 310 is formed with a threaded abutment surface 311 arranged corresponding to the threaded hole 410, the adjusting end is passed through the threaded hole 410 and is threadedly connected to the adjustable locking member 400, so that before the insulating electrode column 300 and the stainless steel cylindrical table 200 are sealed and fixed, the operator only needs to rotate the adjustable locking member 400 relative to the stainless steel cylindrical table 200 in a preset direction, so that the insulating electrode column 300 can be moved relative to the stainless steel cylindrical table 200, that is, the operator can adjust the length of the detection portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking member 400, so that the detection portion 330 of the insulating electrode column 300 can be located at the preset position of the container, which greatly reduces the difficulty of adjusting the length of the detection portion 330 of the insulating electrode column 300 located in the container, thereby improving the convenience of use of the electric contact type liquid level meter 10.

[0063] like Figures 6 to 8As shown, further, since the stainless steel cylindrical platform 200 is made of austenitic steel, the adjustment end of the insulating electrode column 300 made of martensitic steel cannot be welded and fixed, so that the adjustment end of the insulating electrode column 300 can be limited on the stainless steel cylindrical platform 200 by the adjustable locking piece 400.

[0064] like Figures 3 to 8 As shown, in one embodiment, the connecting part 320 includes a first connecting part 321 and a second connecting part 322, and the outer peripheral walls of the first connecting part 321 and the second connecting part 322 are both formed with a high-temperature resistant insulating coating, the two ends of the first connecting part 321 are fixedly connected to the adjusting part 310 and the first end of the second connecting part 322 respectively, and the second end of the second connecting part 322 is fixedly connected to the detecting part 330, the diameter of the cross section of the first connecting part 321 is smaller than the diameter of the avoidance through hole 210, the diameter of the cross section of the second connecting part 322 is larger than the diameter of the avoidance through hole 210, and the first connecting part 321 is penetrated through the avoidance through hole 210 and is sealed and fixedly connected to the hole wall of the avoidance through hole 210, so that the insulating electrode column 300 can be limited on the stainless steel cylindrical platform 200, avoiding the insulating electrode column 300 from being separated from the stainless steel cylindrical platform 200 when the operator seals and fixes the insulating electrode column 300 with the stainless steel cylindrical platform 200, thereby greatly reducing the assembly difficulty of the electric contact type liquid level meter 10.

[0065] It can be understood that since liquid lead-bismuth needs to be operated and stored under high temperature, high pressure and high sealing environment in application scenarios such as nuclear reactor coolant, and liquid lead-bismuth is highly corrosive to steel products, it is easy to cause damage or even damage to one end of the insulating electrode column 300 located in the container, thereby causing the electric contact liquid level gauge 10 to fail, greatly reducing the stability of the electric contact liquid level gauge 10.

[0066] To solve the above problems, in this embodiment, the high-temperature resistant insulating coating can be at least one of an aluminum oxide (Al2O3) coating, a zirconium oxide (ZrO2) coating, a silicon oxide (SiO2) coating and a silicon nitride (Si3N4) coating, so that the high-temperature resistant insulating coating has good high temperature and high pressure resistance and corrosion resistance, thereby avoiding the failure of the electric contact type liquid level meter 10 and greatly improving the use stability of the electric contact type liquid level meter 10.

[0067] like Figure 7 As shown, in this embodiment, the first connection portion 321 and the second connection portion 322 are an integrally formed structure to improve the structural compactness of the connection portion 320 .

[0068] like Figures 1 to 6As shown, in one embodiment, the liquid level meter body 100 includes a flange 120, an electric electrode assembly 130 and a stainless steel connecting sleeve 140. The flange 120 is provided with a plurality of electric through holes 121. The number of the electric electrode assemblies 130 is a plurality. The plurality of electric electrode assemblies 130 are respectively inserted into the corresponding electric through holes 121 and are sealed and fixedly connected to the flange 120. The mounting hole 110 is formed in the stainless steel connecting sleeve 140. One end of the stainless steel connecting sleeve 140 is sealed and fixedly connected to the flange 120. 0, the other end of the stainless steel connecting sleeve 140 is sleeved and sealed and fixedly connected to the stainless steel cylindrical table 200 to form a sealed cavity 500 together, and each power-connected electrode assembly 130 is electrically connected to the adjustment part 310 of the corresponding insulating electrode column 300 through the mounting hole 110, and the adjustment part 310 is located in the sealed cavity 500 to prevent liquid lead bismuth or liquid lead bismuth vapor from entering the sealed cavity 500, ensuring that the electric contact type liquid level meter 10 can stably and normally work, thereby improving the use stability of the electric contact type liquid level meter 10.

[0069] like Figure 3 and Figure 4 As shown, in this embodiment, the power electrode assembly 130 includes a power electrode 131, an alumina ceramic tube 132 and a conical stainless steel ring 133. The power electrode 131 is inserted into the power connection hole 121. The first end of the power electrode 131 is located in the sealed cavity 500. The alumina ceramic tube 132 and the conical stainless steel ring 133 are sequentially sleeved on the second end of the power electrode 131. The two ends of the alumina ceramic tube 132 are sealed and fixedly connected to the flange 120 and the conical stainless steel ring 133 respectively. The inner circumferential wall of the conical stainless steel ring 133 is sealed and fixedly connected to the outer circumferential wall of the second end of the power electrode 131, so as to ensure that the sealed cavity 500 has good sealing performance and improve the use stability of the electric contact liquid level meter 10.

[0070] like Figure 4 As shown, in this embodiment, the alumina ceramic tube 132 is respectively welded to the flange 120 and the conical stainless steel ring 133 by vacuum active brazing, and the conical stainless steel ring 133 is laser welded to the power electrode 131, so as to ensure that the sealed cavity 500 has good sealing performance, and at the same time, the alumina ceramic tube 132 can be respectively and firmly fixed to the flange 120 and the conical stainless steel ring 133, and the conical stainless steel can also be firmly fixed to the second end of the power electrode 131, thereby further improving the use stability of the electric contact type liquid level meter 10.

[0071] like Figure 4 As shown, in this embodiment, there is an avoidance gap between the power connection electrode 131 and the hole wall of the power connection hole 121 to avoid the false alarm of the electric contact type liquid level meter 10 due to the contact and conduction between the flange 120 and the power connection electrode 131, thereby improving the use stability of the electric contact type liquid level meter 10.

[0072] like Figure 3 As shown, in this embodiment, the stainless steel connecting sleeve 140 and the flange 120 are laser welded to ensure that the sealing cavity 500 has good sealing performance, while also enabling the stainless steel connecting sleeve 140 to be securely fixed to the flange 120, further improving the use stability of the electric contact type liquid level meter 10.

[0073] like Figures 3 to 6 As shown, in one embodiment, the electric contact type liquid level meter 10 further includes a plurality of electric connection components 600, and the plurality of electric connection components 600 are all arranged in the sealed cavity 500, and the two ends of the plurality of electric connection components 600 are respectively fixed and electrically connected to the corresponding power connection electrode components 130 and the adjusting parts 310 of the corresponding insulating electrode columns 300, so that when the detection part 330 of the insulating electrode column 300 contacts the liquid lead-bismuth in the container, the insulating electrode column 300 can transmit the electrical signal to the power connection electrode 131 through the electric connection component 600, and transmit the electrical signal to the control center of the electric contact type liquid level meter 10 through the power connection electrode 131, so that the electric contact type liquid level meter 10 can measure the liquid level height in the container, and can also detect the liquid level height change of the liquid lead-bismuth in the container, so that the operator can better control the flow of the liquid lead-bismuth in the container, avoid the loss of liquid lead-bismuth during storage and transportation, and improve production efficiency.

[0074] It can be understood that when the electric contact liquid level meter 10 is affected by external factors and vibrates, the electrical connection component 600 will also shake with the vibration of the electric contact liquid level meter 10, which greatly increases the probability that different electrical connection components 600 are conductive due to contact with each other, thereby causing the electric contact liquid level meter 10 to give false alarms during use, greatly reducing the stability of the electric contact liquid level meter 10.

[0075] To solve the above problems, Figures 2 to 6 As shown, in one embodiment, the electrical connection assembly 600 includes an electrical connector 610 and an insulating sleeve 620, the insulating sleeve 620 is sleeved on the electrical connector 610, and the two ends of the electrical connector 610 are respectively fixed and electrically connected to the power electrode assembly 130 and the adjustment portion 310 of the insulating electrode column 300, so that the insulating sleeve 620 can electrically isolate the electrical connector 610, so that when different electrical connectors 610 contact each other due to shaking, the insulating sleeve 620 can effectively prevent the different electrical connectors 610 from being conductive, thereby effectively avoiding the false alarm of the electric contact type liquid level meter 10 during use, and greatly improving the use stability of the electric contact type liquid level meter 10.

[0076] like Figure 5As shown, in this embodiment, the insulating sleeve 620 is a high-silica sleeve, and the temperature tolerance range of the high-silica sleeve exceeds 650°C to avoid melting of the insulating sleeve 620 due to excessively high temperature in the container, thereby further improving the use stability of the electric contact type liquid level meter 10.

[0077] like Figure 5 As shown, in this embodiment, the diameter of the cross section of the electrical connector 610 is 0.5mm-1.5mm, so as to reduce the space occupied by the electrical connector 610, while ensuring that the electrical connector 610 transmits the electrical signal of the insulating electrode column 300 to the power electrode 131, which not only facilitates the installation of the electrical connector 610 in the sealed cavity 500 and reduces the difficulty of assembling the electric contact type liquid level meter 10, but also ensures that the electric contact type liquid level meter 10 can operate stably and normally.

[0078] It can be understood that when the distance between two adjacent insulating electrode columns 300 is too small, liquid lead and bismuth are easily adhered to the gap between the two adjacent insulating electrode columns 300, causing the detection part 330 of the insulating electrode column 300 to be in contact and conductive with the liquid lead and bismuth in the gap, causing the electric contact type liquid level meter 10 to have a false alarm, greatly reducing the stability of the use of the electric contact type liquid level meter 10. When the distance between two adjacent insulating electrode columns 300 is too large, the volume of the liquid level meter is large.

[0079] To solve the above problems, Figure 8 and Fig. 9 As shown, in one embodiment, two adjacent insulating electrode posts 300 are arranged at a preset distance L, and the preset distance L is greater than or equal to 5 mm, so as to prevent liquid lead and bismuth from adhering to the gap between the two adjacent insulating electrode posts 300, thereby improving the use stability of the electric contact type liquid level meter 10. In this embodiment, the preset distance L is 5 mm-10 mm.

[0080] like Figure 3 As shown, in one of the embodiments, the outer wall of the stainless steel cylindrical table 200 is laser welded to the hole wall of the mounting hole 110 to improve the sealing between the outer wall of the stainless steel cylindrical table 200 and the hole wall of the mounting hole 110, to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the stainless steel cylindrical table 200 and the hole wall of the mounting hole 110, thereby greatly reducing the possibility of the electric contact type liquid level gauge 10 being damaged or even destroyed, thereby greatly improving the use stability of the electric contact type liquid level gauge 10.

[0081] like Figure 8 and Fig. 9As shown, in this embodiment, the laser power of laser welding is 200W-500W, the welding speed is 1m / min-8m / min, argon or nitrogen is used as the protective gas, and the gas flow rate is controlled at 10L / min-20L / min to improve the welding quality of laser welding, so that while ensuring that the weld has good sealing, it also has high connection strength, thereby improving the use stability of the electric contact liquid level meter 10.

[0082] like Figures 6 to 8 As shown, in one of the embodiments, the connecting portion 320 of each insulating electrode column 300 is vacuum-actively brazed to the hole wall of the corresponding avoidance through hole 210 to improve the sealing between the connecting portion 320 of the insulating electrode column 300 and the hole wall of the avoidance through hole 210, to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the stainless steel cylindrical platform 200 and the hole wall of the mounting hole 110, thereby greatly reducing the possibility of the electric contact type liquid level gauge 10 being damaged or even destroyed, thereby greatly improving the use stability of the electric contact type liquid level gauge 10.

[0083] In one embodiment, the brazing material for vacuum active brazing is AgCuTi alloy, the temperature of vacuum active brazing is 750°C-850°C, the temperature holding time is 5min-15min, the heating rate should be controlled at 5°C / min-10°C / min, the vacuum degree is 10 -3 Pa-11 -3 Pa is used to improve the welding quality of vacuum active brazing, so that while ensuring that the weld has good sealing performance, it also has high connection strength, thereby improving the use stability of the electric contact type liquid level meter 10.

[0084] The present disclosure also provides a method for manufacturing an electric contact type liquid level gauge 10, which is used to manufacture the electric contact type liquid level gauge 10 described in any of the above embodiments. The method for manufacturing the electric contact type liquid level gauge 10 includes some or all of the following steps:

[0085] like Fig.10 As shown, S101, assembling to obtain the liquid level meter body 100;

[0086] like Fig.10 As shown, S103, installing a plurality of insulating electrode columns 300 in corresponding avoidance through holes 210;

[0087] In this embodiment, a number of insulating electrode columns 300 are installed in corresponding avoidance holes 210, so that the electric contact liquid level meter 10 can measure multiple liquid level heights, and at the same time, the liquid level difference can be obtained according to the measured different liquid level heights, so that the electric contact liquid level meter 10 can monitor the liquid level changes of liquid lead and bismuth in the container, thereby expanding the application scope of the electric contact liquid level meter 10 and greatly improving the applicability of the electric contact liquid level meter 10 disclosed in the present invention.

[0088] like Fig.10 As shown, S105, a plurality of adjustable locking members 400 are sleeved on the adjusting parts 310 of the corresponding insulating electrode columns 300 and movably connected with the adjusting parts 310;

[0089] In this embodiment, a plurality of adjustable locking members 400 are sleeved on the adjustment parts 310 of the corresponding insulating electrode columns 300 and movably connected to the adjustment parts 310, so that the insulating electrode columns 300 can be limited on the stainless steel cylindrical platform 200, thereby preventing the insulating electrode columns 300 from being separated from the stainless steel cylindrical platform 200 when the operator seals and fixes the insulating electrode columns 300 with the stainless steel cylindrical platform 200, thereby greatly reducing the difficulty of assembling the electric contact type liquid level meter 10.

[0090] like Fig.10 As shown, S107, the insulating electrode column 300 is moved relative to the stainless steel cylindrical platform 200 to adjust the length of the detection portion 330 of the insulating electrode column 300 located in the container until the detection portion 330 of the insulating electrode column 300 reaches a preset position of the container;

[0091] In this embodiment, the insulating electrode column 300 is moved relative to the stainless steel cylindrical table 200 to adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container until the detecting portion 330 of the insulating electrode column 300 reaches the preset position of the container, so that before the insulating electrode column 300 and the stainless steel cylindrical table 200 are sealed and fixed, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking member 400, that is, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container according to the liquid level height to be measured, so that the detecting portion 330 of the insulating electrode column 300 can be located at the preset position of the container, further improving the applicability of the electric contact liquid level meter 10.

[0092] like Fig.10 As shown, S109, each insulating electrode column 300 is sealed and fixedly connected to the hole wall of the corresponding avoidance through hole 210;

[0093] In this embodiment, each insulating electrode column 300 is sealed and fixedly connected to the wall of the corresponding avoidance through hole 210 to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the insulating electrode column 300 and the stainless steel cylindrical table 200, thereby greatly reducing the possibility of damage or even destruction of the electric contact type liquid level gauge 10, thereby greatly improving the use stability of the electric contact type liquid level gauge 10.

[0094] like Fig.10 As shown, S111 , the stainless steel cylindrical platform 200 is installed in the mounting hole 110 and is sealed and fixedly connected to the hole wall of the mounting hole 110 .

[0095] In this embodiment, the stainless steel cylindrical table 200 is installed in the mounting hole 110 and is sealed and fixedly connected to the hole wall of the mounting hole 110 to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the hole wall of the mounting hole 110 and the stainless steel cylindrical table 200, thereby greatly reducing the possibility of damage or even destruction of the electric contact type liquid level gauge 10 and further improving the use stability of the electric contact type liquid level gauge 10.

[0096] The manufacturing method of the electric contact type liquid level gauge 10 is as follows: first, assemble the liquid level gauge body 100; then install a plurality of insulating electrode columns 300 in the corresponding avoidance through holes 210, so that the connecting portion 320 of each insulating electrode column 300 is inserted into the corresponding avoidance through hole 210, and the lengths of the detecting portions 330 of the plurality of insulating electrode columns 300 are set to be different, so that the electric contact type liquid level gauge 10 can measure multiple liquid level heights, and can also obtain liquid level differences according to the different measured liquid level heights, so that The electric contact type liquid level meter 10 can monitor the liquid level changes of liquid lead and bismuth in the container; then, a plurality of adjustable locking members 400 are sleeved on the adjusting portion 310 of the corresponding insulating electrode column 300 and movably connected with the adjusting portion 310, so that each adjustable locking member 400 abuts against the first end surface of the stainless steel cylindrical platform 200, and the detection portion 330 of each insulating electrode column 300 is exposed on the second end surface of the stainless steel cylindrical platform 200, so that the insulating electrode column 300 can be limited on the stainless steel cylindrical platform 200.

[0097] Furthermore, the insulating electrode column 300 is moved relative to the stainless steel cylindrical platform 200 to adjust the length of the detection portion 330 of the insulating electrode column 300 located in the container until the detection portion 330 of the insulating electrode column 300 reaches a preset position of the container, so that before the insulating electrode column 300 and the stainless steel cylindrical platform 200 are sealed and fixed, the operator can adjust the length of the detection portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking member 400, that is, the operator can adjust the insulating electrode column 300 according to the liquid level height to be measured. The detection portion 330 of the pole 300 is located at the length of the container; finally, each insulating electrode column 300 is sealed and fixedly connected to the hole wall of the corresponding avoidance through hole 210, and the stainless steel cylindrical table 200 is installed in the mounting hole 110 and sealed and fixedly connected to the hole wall of the mounting hole 110 to prevent liquid lead bismuth vapor or liquid lead bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level meter 10 through the gap between the insulating electrode column 300 and the stainless steel cylindrical table 200 and the gap between the stainless steel cylindrical table 200 and the hole wall of the mounting hole 110.

[0098] In one embodiment, the specific steps of moving the insulated electrode column 300 relative to the stainless steel cylindrical platform 200 until the detection portion 330 of the insulated electrode column 300 reaches a preset position of the container include some or all of the following steps:

[0099] S1071, adjusting the adjustable locking member 400;

[0100] In this embodiment, the adjustable locking member 400 is adjusted so that the insulated electrode column 300 can move relative to the stainless steel cylindrical platform 200 .

[0101] S1073, move the insulated electrode column 300 relative to the stainless steel cylindrical platform 200 until the detection portion 330 of the insulated electrode column 300 reaches a preset position of the container.

[0102] In this embodiment, the insulated electrode column 300 is moved relative to the stainless steel cylindrical table 200 until the detection portion 330 of the insulated electrode column 300 reaches a preset position in the container, so that before the insulated electrode column 300 is sealed and fixed to the stainless steel cylindrical table 200, the operator can adjust the length of the detection portion 330 of the insulated electrode column 300 in the container by adjusting the adjustable locking member 400, that is, the operator can adjust the length of the detection portion 330 of the insulated electrode column 300 in the container according to the liquid level height to be measured.

[0103] In this embodiment, the adjustable locking member 400 is formed with a threaded hole 410, the adjusting portion 310 is formed with a first threaded abutment surface 311 corresponding to the threaded hole 410, the adjusting end is passed through the threaded hole 410 and is threadedly connected to the adjustable locking member 400; the specific steps of adjusting the adjustable locking member 400 include some or all of the following steps:

[0104] S10711 Rotate the adjustable locking member 400 along a preset direction relative to the adjusting portion 310 of the insulating electrode column 300 .

[0105] In this embodiment, the adjustable locking member 400 is rotated along a preset direction relative to the adjusting portion 310 of the insulating electrode column 300 , so that the insulating electrode column 300 can move relative to the stainless steel cylindrical platform 200 .

[0106] In one embodiment, the specific steps of sealing and fixing each insulating electrode column 300 with the hole wall of the corresponding avoidance through hole 210 include part or all of the following steps:

[0107] S1091 , welding the connection portion 320 of each insulating electrode column 300 to the hole wall of the corresponding avoidance through hole 210 by vacuum active brazing.

[0108] In this embodiment, the connection portion 320 of each insulating electrode column 300 is vacuum-actively brazed to the hole wall of the corresponding avoidance through hole 210 to improve the sealing between the connection portion 320 of the insulating electrode column 300 and the hole wall of the avoidance through hole 210, thereby preventing liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level meter 10 through the gap between the insulating electrode column 300 and the stainless steel cylindrical platform 200.

[0109] In this embodiment, the specific steps of installing the stainless steel cylindrical platform 200 in the mounting hole 110 and sealing and fixing it with the hole wall of the mounting hole 110 include some or all of the following steps:

[0110] S1111 , installing the stainless steel cylindrical platform 200 in the mounting hole 110 and laser welding the stainless steel cylindrical platform 200 to the hole wall of the mounting hole 110 .

[0111] In this embodiment, the stainless steel cylindrical table 200 is installed in the mounting hole 110 and laser welded to the hole wall of the mounting hole 110 to improve the sealing between the stainless steel cylindrical table 200 and the hole wall of the mounting hole 110, so as to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level meter 10 through the gap between the hole wall of the mounting hole 110 and the stainless steel cylindrical table 200.

[0112] Furthermore, the specific steps of assembling the liquid level meter body 100 include part or all of the following steps:

[0113] S1011, insert the power connection electrode assembly 130 into the power connection through hole 121 and seal and fix it to the flange 120;

[0114] In this embodiment, the power-connecting electrode assembly 130 is penetrated through the power-connecting through hole 121 and is sealed and fixedly connected to the flange 120 to improve the sealing between the power-connecting electrode assembly 130 and the flange 120, thereby preventing liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level meter 10 through the gap between the power-connecting electrode assembly 130 and the flange 120.

[0115] S1013, sealingly and securely connect the stainless steel connecting sleeve 140 and the flange 120.

[0116] In this embodiment, the stainless steel connecting sleeve 140 and the flange 120 are sealed and fixedly connected to improve the sealing between the stainless steel connecting sleeve 140 and the flange 120 to prevent liquid lead bismuth vapor or liquid lead bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level meter 10 through the gap between the stainless steel connecting sleeve 140 and the flange 120.

[0117] In this embodiment, the specific steps of inserting the power electrode assembly 130 into the power through hole 121 and sealing and fixing it with the flange 120 include part or all of the following steps:

[0118] S10111, vacuum active brazing the alumina ceramic tube 132 to a preset position of the flange 120;

[0119] In this embodiment, the alumina ceramic tube 132 is vacuum-actively brazed to a preset position of the flange 120 to improve the sealing between the alumina ceramic tube 132 and the flange 120 to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact liquid level meter 10 through the gap between the alumina ceramic tube 132 and the flange 120.

[0120] S10113, vacuum active brazing the conical stainless steel ring 133 to a preset position of the alumina ceramic tube 132;

[0121] In this embodiment, the alumina ceramic tube 132 is vacuum-active brazed to a preset position of the flange 120 to improve the sealing between the conical stainless steel ring 133 and the alumina ceramic tube 132 to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the conical stainless steel ring 133 and the alumina ceramic tube 132.

[0122] S10115, the power electrode 131 is sequentially inserted into the conical stainless steel ring 133, the alumina ceramic tube 132 and the power through hole 121, and the power electrode 131 and the conical stainless steel ring 133 are laser welded.

[0123] In this embodiment, the power-connecting electrode 131 is sequentially inserted into the conical stainless steel ring 133, the alumina ceramic tube 132 and the power-connecting through hole 121, and the power-connecting electrode 131 and the conical stainless steel ring 133 are laser welded to improve the sealing between the power-connecting electrode 131 and the conical stainless steel ring 133, so as to prevent liquid lead-bismuth vapor or liquid lead-bismuth overflowing due to uncontrolled liquid level from entering the interior of the electric contact type liquid level gauge 10 through the gap between the power-connecting electrode 131 and the conical stainless steel ring 133.

[0124] In this embodiment, before the stainless steel cylindrical platform 200 is installed in the mounting hole 110 and sealed and fixedly connected with the hole wall of the mounting hole 110, the specific steps after each insulated electrode column 300 is sealed and fixedly connected with the hole wall of the corresponding avoidance through hole 210 include part or all of the following steps:

[0125] S1093, fixing and electrically connecting one end of each electrical connection assembly 600 to the corresponding power connection electrode assembly 130;

[0126] In this embodiment, one end of each electrical connection assembly 600 is fixed and electrically connected to the corresponding power connection electrode assembly 130 , so that the electrical connection assembly 600 can transmit the electrical signal to the power connection electrode.

[0127] S1095 , fixing and electrically connecting the other end of each electrical connection assembly 600 to the corresponding adjustment portion 310 .

[0128] In this embodiment, the other end of each electrical connection component 600 is fixed and electrically connected to the corresponding adjustment part 310, so that the adjustment part 310 of the insulating electrode column 300 can transmit the electrical signal to the power electrode component 130 through the electrical connection component 600, so that the electric contact type liquid level meter 10 can measure the liquid level height of the liquid lead bismuth in the container.

[0129] Compared with the prior art, the present invention has the following advantages, including but not limited to:

[0130] 1. The manufacturing method of the electric contact type liquid level gauge 10 is as follows: the electric contact type liquid level gauge 10 comprises a plurality of insulating electrode columns 300, each insulating electrode column 300 comprises an adjusting portion 310, a connecting portion 320 and a detecting portion 330 which are connected in sequence, the connecting portion 320 of each insulating electrode column 300 is penetrated in the corresponding avoidance through hole 210 and fixedly connected to the hole wall of the avoidance through hole 210, the adjusting portion 310 is located in the mounting hole 110, the detecting portion 330 is located on the outer side of the first end surface of the stainless steel cylindrical platform 200, and the outer peripheral wall of the connecting portion 320 It is molded with a high-temperature resistant insulating coating, and the lengths of the detection parts 330 of several insulating electrode columns 300 are set differently. Compared with the liquid level meter in the related art, the electric contact liquid level meter 10 disclosed in the present invention can measure multiple liquid level heights, and can also obtain the liquid level difference according to the measured different liquid level heights, so that the electric contact liquid level meter 10 disclosed in the present invention can monitor the liquid level changes of liquid lead and bismuth in the container, thereby expanding the application scope of the electric contact liquid level meter 10 disclosed in the present invention and greatly improving the applicability of the electric contact liquid level meter 10 disclosed in the present invention.

[0131] 2. Since the connecting portion 320 of each insulating electrode column 300 is sealed and fixedly connected to the hole wall of the corresponding avoidance through hole 210, when the electric contact liquid level gauge 10 measures the liquid level of corrosive substances such as liquid lead and bismuth, it can effectively prevent the liquid lead bismuth vapor or the liquid lead bismuth overflowing due to the liquid level out of control from entering the interior of the electric contact liquid level gauge 10 through the gap between the insulating electrode column 300 and the stainless steel cylindrical platform 200, thereby greatly reducing the possibility of the electric contact liquid level gauge 10 being damaged or even destroyed, thereby greatly improving the use stability of the electric contact liquid level gauge 10.

[0132] 3. Since each adjustable locking member 400 is located in the mounting hole 110 and is sleeved on the adjusting portion 310 of the corresponding insulating electrode column 300, the adjustable locking member 400 is movably connected to the adjusting portion 310, and the adjustable locking member 400 abuts against the second end surface of the stainless steel cylindrical platform 200, so that before the insulating electrode column 300 and the stainless steel cylindrical platform 200 are sealed and fixed, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container by adjusting the adjustable locking member 400, that is, the operator can adjust the length of the detecting portion 330 of the insulating electrode column 300 located in the container according to the liquid level height to be measured, so that the detecting portion 330 of the insulating electrode column 300 can be located at a preset position of the container, further improving the applicability of the electric contact type liquid level meter 10.

[0133] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. An electric contact type liquid level meter, used for detecting the liquid level height of liquid lead and bismuth in a container, the electric contact type liquid level meter comprising: A liquid level meter body, wherein the liquid level meter body is formed with a mounting hole; A stainless steel cylindrical platform, the stainless steel cylindrical platform is located in the mounting hole and is sealed and fixedly connected to the liquid level meter body, and the stainless steel cylindrical platform is provided with a plurality of avoidance through holes; Characterized in that the electric contact type liquid level meter also includes: A plurality of insulating electrode columns, each of which comprises an adjusting portion, a connecting portion and a detecting portion connected in sequence, the connecting portion of each insulating electrode column being inserted into the corresponding avoiding through hole and being sealed and fixedly connected to the hole wall of the avoiding through hole, the adjusting portion being located in the mounting hole, the detecting portion being located outside the first end face of the stainless steel cylindrical platform, and the outer peripheral wall of the connecting portion being formed with a high temperature resistant insulating coating; the detecting portions of the plurality of insulating electrode columns are arranged with different lengths; A plurality of adjustable locking members, each of which is located in the mounting hole and sleeved on the adjusting portion of the corresponding insulating electrode column, the adjustable locking member is movably connected to the adjusting portion, and the adjustable locking member abuts against the second end surface of the stainless steel cylindrical platform.

2. The electric contact type liquid level gauge according to claim 1, characterized in that: The connecting part includes a first connecting part and a second connecting part, the outer peripheral walls of the first connecting part and the second connecting part are both formed with the high-temperature resistant insulating coating, the two ends of the first connecting part are respectively fixedly connected to the first ends of the adjusting part and the second connecting part, the second end of the second connecting part is fixedly connected to the detecting part, the diameter of the cross section of the first connecting part is smaller than the diameter of the avoidance through hole, the diameter of the cross section of the second connecting part is larger than the diameter of the avoidance through hole, and the first connecting part is penetrated through the avoidance through hole and is sealed and fixedly connected to the hole wall of the avoidance through hole.

3. The electric contact type liquid level gauge according to claim 1, characterized in that: The liquid level meter body includes a flange, an electrical electrode assembly and a stainless steel connecting sleeve. The flange is provided with a plurality of electrical through holes. The number of the electrical electrode assemblies is a plurality. The plurality of electrical electrode assemblies are respectively inserted into the corresponding electrical through holes and are sealed and fixedly connected to the flange. The mounting hole is formed in the stainless steel connecting sleeve. One end of the stainless steel connecting sleeve is sealed and fixedly connected to the flange. The other end of the stainless steel connecting sleeve is sleeved and sealed and fixedly connected to the stainless steel cylindrical table to form a sealed cavity together. Each of the electrical electrode assemblies is electrically connected to the corresponding adjusting portion of the insulating electrode column through the mounting hole, and the adjusting portion is located in the sealed cavity.

4. The electric contact type liquid level gauge according to claim 3, characterized in that: The electric contact type liquid level gauge also includes a plurality of electrical connection components, which are all arranged in the sealed cavity, and the two ends of the plurality of electrical connection components are respectively fixed and electrically connected to the corresponding power electrode components and the corresponding adjusting parts of the insulating electrode columns.

5. The electric contact type liquid level gauge according to claim 4, characterized in that: Each of the electrical connection components comprises an electrical connection piece and an insulating sleeve, wherein the insulating sleeve is sleeved on the electrical connection piece, and two ends of the electrical connection piece are respectively fixed to and electrically connected with the adjustment part of the power connection electrode component and the insulating electrode column.

6. The electric contact type liquid level gauge according to claim 1, characterized in that: Two adjacent insulating electrode columns are arranged at a preset distance, and the preset distance is greater than or equal to 5 mm.

7. The electric contact type liquid level gauge according to claim 1, characterized in that: The outer peripheral wall of the stainless steel cylindrical platform is laser welded to the hole wall of the mounting hole; and / or, The connecting portion of each insulating electrode column is welded to the hole wall of the corresponding avoidance through hole by vacuum active brazing.

8. A method for manufacturing an electric contact type liquid level gauge, characterized in that: Used to manufacture the electric contact type liquid level gauge according to any one of claims 1 to 7, the electric contact type liquid level gauge manufacturing method comprising: Assembling to obtain the liquid level meter body; Installing a plurality of the insulating electrode columns in the corresponding avoidance through holes; The plurality of adjustable locking members are sleeved on the corresponding adjusting parts of the insulating electrode columns and are movably connected to the adjusting parts; Moving the insulating electrode column relative to the stainless steel cylindrical platform to adjust the length of the detection portion of the insulating electrode column located in the container until the detection portion of the insulating electrode column reaches a preset position; Sealing and fixing each of the insulating electrode posts to the hole wall of the corresponding avoidance through hole; The stainless steel cylindrical platform is installed in the installation hole and is sealed and fixedly connected to the hole wall of the installation hole.

9. The method for manufacturing an electric contact type liquid level gauge according to claim 8, characterized in that: The specific steps of moving the insulating electrode column relative to the stainless steel cylindrical platform until the detection portion of the insulating electrode column reaches a preset position include: Adjusting the adjustable locking member; The insulating electrode column is moved relative to the stainless steel cylindrical platform until the detection portion of the insulating electrode column is at a preset position of the container.

10. The method for manufacturing an electric contact type liquid level gauge according to claim 8, characterized in that: The specific step of sealing and fixing each of the insulating electrode columns to the hole wall of the corresponding avoidance through hole is: The connecting portion of each insulating electrode column is welded to the hole wall of the corresponding avoidance through hole by vacuum active brazing.

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