Anti-interference magnetostrictive liquid level meter

Abstract

The embodiment of the utility model discloses an anti-interference magnetostriction liquid level meter, the anti-interference magnetostriction liquid level meter comprises a feeler lever assembly, a ring seat and a shell pipe, the ring seat is sleeved on the feeler lever assembly and connected with the feeler lever assembly, and the shell pipe is sleeved on the feeler lever assembly and connected with the ring seat. When the magnetostrictive liquid level meter is in an actual use environment, some electrical equipment leaks electricity or the environment temperature is too high, interference of leakage current on the magnetostrictive liquid level meter is avoided, and the phenomenon of thermal interference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level gauges, in particular to an anti-interference magnetostrictive liquid level gauge. Background Technique

[0002] A magnetostrictive liquid level gauge consists of three parts: a detection rod, a circuit unit, and a float. During measurement, the circuit unit generates a current pulse, which travels downward along the magnetostrictive wire and generates a circular magnetic field. A float is equipped outside the detection rod, and the float moves up and down along the detection rod with the change of the liquid level. Since a set of permanent magnets are installed inside the float, the float simultaneously generates a magnetic field. When the current magnetic field meets the magnetic field of the float, a "twisted" pulse, or "return" pulse, is generated. The time difference between the "return" pulse and the current pulse is converted into a pulse signal, thereby calculating the actual position of the float and measuring the liquid level. Magnetostrictive liquid level gauges are used for industrial metering and control of liquid levels in various liquid tanks such as power, petroleum, chemical raw material storage, industrial processes, biochemistry, medicine, food and beverage, tank farm management, and underground inventory of gas stations, water level monitoring of dams, water level monitoring of reservoirs, and sewage treatment, etc.

[0003] Existing magnetostrictive liquid level gauges will be interfered by some factors during actual application. When electrical equipment in the usage environment of the magnetostrictive liquid level gauge leaks electricity, the leakage current will interfere with the measurement of the magnetostrictive liquid level gauge. And due to the special application environment, the magnetostrictive liquid level gauge is prone to thermal interference when the usage environment temperature is too high. Summary of the Utility Model

[0004] Based on this, it is necessary to provide an anti-interference magnetostrictive liquid level gauge, aiming to solve the technical problems that existing magnetostrictive liquid level gauges will be interfered by some factors during actual application. When electrical equipment in the usage environment of the magnetostrictive liquid level gauge leaks electricity, the leakage current will interfere with the measurement of the magnetostrictive liquid level gauge. And due to the special application environment, the magnetostrictive liquid level gauge is prone to thermal interference when the usage environment temperature is too high.

[0005] The utility model provides an anti-interference magnetostrictive liquid level gauge, which includes a probe rod assembly, a coil seat, and an outer shell tube. The coil seat sleeves the probe rod assembly and is connected to the probe rod assembly. The outer shell tube sleeves the probe rod assembly and is connected to the coil seat.

[0006] In one embodiment, the outer shell tube is provided with a first internal thread, and the coil seat is provided with a second external thread. The first internal thread is threadedly connected to the second external thread.

[0007] In one embodiment, the anti-interference magnetostrictive liquid level gauge further includes a connecting seat. The outer shell tube is further provided with a first external thread. The connecting seat sleeves the outer shell tube and is threadedly connected to the first external thread.

[0008] In one embodiment, the probe assembly includes a rod body and a float sleeving the rod body. The ring seat sleeving the rod body is connected to the rod body. A magnetic ring is arranged inside the float, and a circuit unit is arranged inside the rod body. The float is arranged between the rod body and the outer shell tube.

[0009] In one embodiment, the probe assembly further includes a probe. One end of the rod body is connected to the probe. The diameter of the probe is larger than that of the float, and the diameter of the outer shell tube is larger than that of the probe.

[0010] In one embodiment, the probe assembly further includes a ball head and a display screen. The ball head is installed on the rod body, and the display screen is installed on the ball head and electrically connected to the circuit unit.

[0011] In one embodiment, the rod body is a structural member made of vinyl silicone rubber.

[0012] In one embodiment, the rod body is a structural member made of low phenyl silicone rubber.

[0013] In one embodiment, the outer shell tube is a structural member made of vinyl silicone rubber.

[0014] In one embodiment, the outer shell tube is a structural member made of low phenyl silicone rubber.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] By using the anti-interference magnetostrictive liquid level gauge of the present invention, the ring seat of the anti-interference magnetostrictive liquid level gauge sleeves the probe assembly and is connected to the probe assembly. The outer shell tube sleeves the probe assembly and is connected to the ring seat. By providing the outer shell tube, in the actual use environment of the magnetostrictive liquid level gauge, when some electrical equipment leaks electricity or the environmental temperature is too high, it will not cause the magnetostrictive liquid level gauge to be interfered by the leakage current and avoid the phenomenon of thermal interference. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Among them:

[0019] Figure 1 It is a schematic diagram of an anti-interference magnetostrictive liquid level gauge in an embodiment.

[0020] Figure 2 It is Figure 1 A schematic diagram of the probe assembly, circuit unit and coil seat in the anti-interference magnetostrictive liquid level gauge shown.

[0021] Figure 3 It is Figure 1 A schematic diagram of the outer shell tube in the anti-interference magnetostrictive liquid level gauge shown.

[0022] Reference numerals:

[0023] 1. Connecting seat; 2. Outer shell tube; 21. First external thread; 22. First internal thread; 3. Rod body; 31. Ball head; 32. Display screen; 33. Coil seat; 34. Probe; 35. Second external thread; 4. Float; 41. Magnetic ring; 5. Circuit unit. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0027] In addition, if terms such as "first" and "second" appear, they are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0028] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0029] Please also combine Figures 1 to 3 , and now the anti-interference magnetostrictive level gauge provided by the present utility model will be described.

[0030] The anti-interference magnetostrictive level gauge includes a probe rod assembly, a coil seat 33 and a housing tube 2. The coil seat 33 is sleeved on the probe rod assembly and connected to the probe rod assembly. The housing tube 2 is sleeved on the probe rod assembly and connected to the coil seat 33.

[0031] It can be understood that the coil seat 33 of the anti-interference magnetostrictive level gauge is sleeved on the probe rod assembly and connected to the probe rod assembly. The housing tube 2 is sleeved on the probe rod assembly and connected to the coil seat 33. By setting the housing tube 2, in the actual use environment of the magnetostrictive level gauge, if some electrical equipment leaks electricity or the environmental temperature is too high, it will not cause the magnetostrictive level gauge to be interfered by the leakage current, and the phenomenon of thermal interference can be avoided.

[0032] In this embodiment, the housing tube 2 is provided with a first internal thread 22, and the coil seat 33 is provided with a second external thread 35. The first internal thread 22 and the second external thread 35 are threadedly connected to each other. After the housing tube 2 is sleeved on the probe rod assembly, the first internal thread 22 of the housing tube 2 and the second external thread 35 are threadedly connected to each other, so that the housing tube 2 can be conveniently disassembled and assembled.

[0033] Furthermore, the anti-interference magnetostrictive level gauge further includes a connecting seat 1. The housing tube 2 is further provided with a first external thread 21. The connecting seat 1 is sleeved on the housing tube 2 and threadedly connected to the first external thread 21. Specifically, the connecting seat 1 is provided with a threaded through hole. The connecting seat 1 is sleeved on the housing tube 2, and the first external thread 21 of the housing tube 2 is threadedly connected to the threaded through hole, so that the connecting seat 1 can be conveniently disassembled and assembled. And by setting the connecting seat 1, after the connecting seat 1 is connected to the housing tube 2, it abuts against the coil seat 33, so that the housing tube 2 is connected more firmly.

[0034] In one embodiment, as Figure 1 and Figure 2 shown, the probe rod assembly includes a rod body 3 and a float 4 sleeved on the rod body 3. The coil seat 33 is sleeved on the rod body 3 and connected to the rod body 3. A magnetic ring 41 is arranged inside the float 4, and a circuit unit 5 is arranged inside the rod body 3. The float 4 is arranged between the rod body 3 and the housing tube 2. In this way, when the float 4 is working, since the float 4 is arranged inside the housing tube 2, it will not be interfered by external environmental factors.

[0035] In this embodiment, the probe rod assembly further includes a probe head 34. One end of the rod body 3 is connected to the probe head 34. The diameter of the probe head 34 is larger than the diameter of the float 4, and the diameter of the outer shell tube 2 is larger than the diameter of the probe head 34. The diameter of the probe head 34 being larger than the diameter of the float 4 prevents the float 4 from detaching from the rod body 3. The diameter of the outer shell tube 2 being larger than the diameter of the probe head 34 enables the outer shell tube 2 to sleeve the rod body 3, so that the outer shell tube 2 can be connected to the ring seat 33.

[0036] Furthermore, the probe rod assembly further includes a ball head 31 and a display screen 32. The ball head 31 is installed on the rod body 3, and the display screen 32 is installed on the ball head 31 and electrically connected to the circuit unit 5. An accommodation space is provided inside the ball head 31, and electronic components are placed in the accommodation space. The display screen 32 being electrically connected to the circuit unit 5 enables the circuit unit 5 to be controlled by operating the display screen 32.

[0037] In one embodiment, the rod body 3 is a structural member made of vinyl silicone rubber. Methyl vinyl silicone rubber, abbreviated as vinyl silicone rubber, is copolymerized from dimethyl siloxane and a small amount of vinyl siloxane, and has high and low temperature resistance, can work long-term at -50~250°C, moisture-proof, electrical insulation, arc resistance, corona resistance, aging resistance, ozone resistance, surface non-stickiness and water repellency, small compression deformation, and saturated steam resistance.

[0038] In one embodiment, the rod body 3 is a structural member made of low phenyl silicone rubber. Low phenyl silicone rubber is applied in occasions requiring low temperature resistance, ablation resistance, high energy radiation resistance, heat insulation, etc.

[0039] In one embodiment, the outer shell tube 2 is a structural member made of vinyl silicone rubber. Methyl vinyl silicone rubber, abbreviated as vinyl silicone rubber, is copolymerized from dimethyl siloxane and a small amount of vinyl siloxane, and has high and low temperature resistance, can work long-term at -50~250°C, moisture-proof, electrical insulation, arc resistance, corona resistance, aging resistance, ozone resistance, surface non-stickiness and water repellency, small compression deformation, and saturated steam resistance.

[0040] In one embodiment, the outer shell tube 2 is a structural member made of low phenyl silicone rubber. Low phenyl silicone rubber is applied in occasions requiring low temperature resistance, ablation resistance, high energy radiation resistance, heat insulation, etc.

[0041] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0042] The above-disclosed is only the preferred embodiment of the present utility model. Certainly, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An anti-interference magnetostrictive liquid level gauge, characterized in that: The anti-interference magnetostrictive liquid level gauge comprises a probe rod assembly, a ring seat and a shell tube. The ring seat is sleeved with the probe rod assembly and connected to the probe rod assembly. The shell tube is sleeved with the probe rod assembly and connected to the ring seat.

2. The anti-interference magnetostrictive liquid level gauge according to claim 1, characterized in that: The outer shell tube is provided with a first internal thread, the ring seat is provided with a second external thread, and the first internal thread and the second external thread are threadedly connected to each other.

3. The anti-interference magnetostrictive liquid level gauge according to claim 2, characterized in that: The anti-interference magnetostrictive liquid level gauge also includes a connecting seat, the shell tube is also provided with a first external thread, the connecting seat is sleeved with the shell tube, and is threadedly connected with the first external thread.

4. The anti-interference magnetostrictive liquid level gauge according to claim 1, characterized in that: The probe rod assembly includes a rod body and a float mounted on the rod body. The ring seat is mounted on the rod body and connected to the rod body. A magnetic ring is arranged inside the float. A circuit unit is arranged inside the rod body. The float is arranged between the rod body and the outer shell tube.

5. The anti-interference magnetostrictive liquid level gauge according to claim 4, characterized in that: The probe rod assembly also includes a probe, one end of the rod body is connected to the probe, the diameter of the probe is larger than the diameter of the float, and the diameter of the shell tube is larger than the diameter of the probe.

6. The anti-interference magnetostrictive liquid level gauge according to claim 4, characterized in that: The probe rod assembly also includes a ball head and a display screen. The ball head is installed on the rod body, and the display screen is installed on the ball head and is electrically connected to the circuit unit.

7. The anti-interference magnetostrictive liquid level gauge according to claim 4, characterized in that: The rod body is a structural member made of vinyl silicone rubber.

8. The anti-interference magnetostrictive liquid level gauge according to claim 4, characterized in that: The rod body is a structural member made of low-phenyl silicone rubber.

9. The anti-interference magnetostrictive liquid level gauge according to claim 1, characterized in that: The outer shell tube is a structural member made of vinyl silicone rubber.

10. The anti-interference magnetostrictive liquid level gauge according to claim 1, characterized in that: The outer shell tube is a structural member made of low-phenyl silicone rubber.

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