Explosion-proof magnetostrictive liquid level meter

Abstract

The utility model discloses an explosion-proof type magnetostrictive liquid level meter, which relates to the field of magnetostrictive liquid level meters, and comprises a measuring tube and a floater, the floater comprises a floater shell, anti-collision rings, permanent magnets, a damping ring, a balance weight block and an external balance block, the top end and the bottom end of the floater shell are fixedly connected with the anti-collision rings, and the permanent magnets are fixedly connected with the anti-collision rings. The utility model provides an explosion-proof magnetostrictive liquid level meter. A floater is connected to the surface of the bottom of a measuring tube in a sliding mode. The damping ring is fixed in the floater shell of the floater and plays a role in cushioning and reducing transverse displacement in the floater; the rotating ball body is mounted in an inner groove position of the damping ring, and the damping ring plays a role in sliding assistance and transverse damping; the floater of the magnetostrictive liquid level meter has high stability, the overall stability can be guaranteed when transverse ripples or shaking occurs on the liquid level, vibration of the floater caused by shaking of the liquid level can be reduced under the action of the damping ring, and the anti-interference performance and the measurement accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the field of magnetostrictive liquid level gauges, in particular to an explosion-proof magnetostrictive liquid level gauge. Background Art

[0002] The magnetostrictive level gauge is a magnetostrictive liquid level displacement sensor, and its working principle is based on the magnetostrictive effect. In magnetostrictive materials, when the magnetic field changes, the length of the material will change slightly. The magnetostrictive level gauge uses this characteristic to convert the liquid level change into the magnetic field change, and then determines the liquid level by measuring the magnetic field change.

[0003] When the float of the existing magnetostrictive level gauge has lateral ripples or shakes on the liquid surface, it is prone to lateral displacement and may collide and vibrate with the measuring tube. When the vibration frequency is high and the amplitude is large, the measurement error of the level gauge may increase. There is still room for improvement in the structure. Utility Model Content

[0004] The utility model aims to provide an explosion-proof magnetostrictive liquid level gauge to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: an explosion-proof magnetostrictive liquid level gauge, comprising a measuring tube and a float, wherein the float is slidably connected to the bottom surface of the measuring tube;

[0006] The shock absorbing ring is fixed inside the float shell of the float and plays the role of shock absorption and reducing lateral displacement in the float;

[0007] The rotating ball is installed in the inner groove position of the shock absorbing ring, and plays the role of assisting sliding and lateral shock absorption in the shock absorbing ring.

[0008] Preferably, the measuring tube comprises a transmitter, a measuring rod and a limit seat, the bottom end of the transmitter is fixedly connected to the top end of the measuring rod, and the bottom end of the measuring rod is fixedly connected to the limit seat.

[0009] Preferably, the float includes a float shell, an anti-collision ring, a permanent magnet, a shock-absorbing ring, a balancing weight and an external balancing weight. The anti-collision ring is fixedly connected to the top and bottom of the float shell, a shock-absorbing ring is fixedly connected to the center of the float shell, a permanent magnet is fixedly connected to the top of the shock-absorbing ring, a balancing weight is fixedly connected to the bottom of the shock-absorbing ring, and an external balancing weight is fixedly connected to the center of the outer wall of the float shell.

[0010] Preferably, the shock-absorbing ring includes a plastic shell, a connecting protrusion, an inner groove position, a slide groove, a spring and a rotating ball. The top of the plastic shell is fixedly connected to a connecting protrusion, and several groups of connecting protrusions are symmetrically arranged at the top and bottom of the plastic shell. An inner groove position is opened inside the plastic shell, and a slide groove is opened in the inner groove position. There are six groups of slide grooves, and a spring is fixedly connected in each group of slide grooves. Six groups of rotating balls are installed in the inner groove positions.

[0011] Preferably, the six groups of rotating balls of the shock-absorbing ring correspond one to one with the six groups of springs.

[0012] Preferably, the shock absorbing ring is fixed to the permanent magnet and the balancing weight block via connecting protrusions at the top and bottom ends.

[0013] Preferably, the mass of the permanent magnet is the same as the mass of the balancing weight.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides an explosion-proof magnetostrictive liquid level gauge, comprising a measuring tube and a float, wherein the bottom surface of the measuring tube is slidably connected with the float; a damping ring, which is fixed inside a float shell of the float and plays a role of damping and reducing lateral displacement in the float; a rotating ball, which is installed in an inner groove of the damping ring and plays a role of assisting sliding and lateral damping in the damping ring; the float of the magnetostrictive liquid level gauge has strong stability, and when lateral ripples or shaking occur on the liquid surface, the overall stability can be guaranteed; under the action of the damping ring, the vibration of the float caused by the shaking of the liquid surface can be reduced, and the anti-interference and measurement accuracy can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the utility model explosion-proof magnetostrictive liquid level gauge Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the utility model explosion-proof magnetostrictive liquid level gauge Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the float of the explosion-proof magnetostrictive liquid level gauge of the utility model;

[0020] Figure 4 It is a cross-sectional view of the shock absorbing ring of the explosion-proof magnetostrictive liquid level gauge of the utility model.

[0021] In the figure: 1. Measuring tube; 2. Float; 3. Transmitter; 4. Measuring rod; 5. Limit seat; 6. Float housing; 7. Anti-collision ring; 8. Permanent magnet; 9. Shock-absorbing ring; 10. Balance weight; 11. External balance weight; 12. Plastic shell; 13. Connecting protrusion; 14. Inner groove; 15. Slide groove; 16. Spring; 17. Rotating ball. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0023] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0024] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0027] Embodiment 1

[0028] See also Figures 1 to 4 , the utility model provides a technical solution: an explosion-proof magnetostrictive liquid level gauge, comprising a measuring tube 1 and a float 2, wherein the bottom surface of the measuring tube 1 is slidably connected with the float 2;

[0029] A shock absorbing ring 9 is fixed inside the float housing 6 of the float 2 to cushion the shock and reduce the lateral displacement in the float 2;

[0030] The rotating ball 17 is installed in the inner groove position 14 of the shock absorbing ring 9, and plays the role of assisting sliding and lateral shock absorption in the shock absorbing ring 9;

[0031] The float 2 of the magnetostrictive level gauge has strong stability and can ensure overall stability when lateral ripples or shaking appear on the liquid surface. Under the action of the shock-absorbing ring 9, the vibration of the float 2 caused by the shaking of the liquid surface can be reduced, thereby improving anti-interference and measurement accuracy.

[0032] Embodiment 2

[0033] On the basis of the first embodiment, the measuring tube 1 comprises a transmitter 3, a measuring rod 4 and a limit seat 5, the bottom end of the transmitter 3 is fixedly connected to the top end of the measuring rod 4, and the bottom end of the measuring rod 4 is fixedly connected to the limit seat 5;

[0034] When in use, the measuring rod 4 of the measuring tube 1 is inserted into the liquid. The float 2 slides upward on the surface of the measuring rod 4 under the action of the buoyancy of the liquid. The float 2 floats up and down with the change of the liquid level. The magnetostrictive material is installed inside. When the float 2 moves with the change of the liquid level, the magnetic field around the magnetostrictive material will also change. The induction coil is located outside the measuring tube. The displacement of the float 2 is sensed by detecting the change of the magnetic field. The transmitter 3 converts the signal output by the induction coil into a standard signal output, which is convenient for subsequent data processing and control.

[0035] Embodiment 3

[0036] On the basis of the first embodiment, the float 2 includes a float housing 6, an anti-collision ring 7, a permanent magnet 8, a shock absorbing ring 9, a balancing weight 10 and an external balancing weight 11. The top and bottom ends of the float housing 6 are fixedly connected with the anti-collision ring 7, the inside of the float housing 6 is fixedly connected with the shock absorbing ring 9, the top of the shock absorbing ring 9 is fixedly connected with the permanent magnet 8, the bottom of the shock absorbing ring 9 is fixedly connected with the balancing weight 10, and the outer wall of the float housing 6 is fixedly connected with the external balancing weight 11 in the center;

[0037] The mass of the permanent magnet 8 is the same as the mass of the balancing weight 10;

[0038] After the float 2 enters the liquid, the permanent magnet 8 and the balancing weight 10 of equal mass play a role of balancing each other to ensure that the center of gravity of the float 2 is always kept in the center. The use of the anti-collision ring 7 can ensure that the collision between the float housing 6 and the transmitter 3 and the limit seat 5 is reduced after use. The use of the shock-absorbing ring 9 can reduce the lateral shaking of the float 2 on the liquid surface with large fluctuations.

[0039] The shock absorbing ring 9 includes a plastic shell 12, a connecting protrusion 13, an inner groove position 14, a slide groove 15, a spring 16 and a rotating ball 17. The top of the plastic shell 12 is fixedly connected with the connecting protrusion 13, and the connecting protrusion 13 is provided with several groups and symmetrically arranged at the top and bottom of the plastic shell 12. The inner groove position 14 is opened inside the plastic shell 12, and the slide groove 15 is opened in the inner groove position 14. There are six groups of slide grooves 15, and each group of slide grooves 15 is fixedly connected with a spring 16. Six groups of rotating balls 17 are installed in the inner groove position 14;

[0040] The six groups of rotating balls 17 of the shock absorbing ring 9 correspond one to one with the six groups of springs 16;

[0041] When installing the float 2, the six groups of rotating balls 17 of the shock-absorbing ring 9 are attached to the outer wall of the measuring rod 4. When the float 2 is displaced up and down on the surface of the measuring rod 4, the rotating balls 17 are rotated on the surface of the measuring rod 4. When the liquid level has large ups and downs or fluctuations, the rotating balls 17 are displaced laterally in the slide groove 15. At the same time, the spring 16 of the shock-absorbing ring 9 can absorb the corresponding lateral displacement generated by the rotating balls 17, thereby playing a stabilizing role and reducing the measurement error.

[0042] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An explosion-proof magnetostrictive liquid level gauge, comprising a measuring tube (1) and a float (2), characterized in that: A float (2) is slidably connected to the bottom surface of the measuring tube (1); A shock absorbing ring (9), the shock absorbing ring (9) is fixed inside the float housing (6) of the float (2), and plays a role in absorbing shock and reducing lateral displacement inside the float (2); The rotating ball (17) is installed in the inner groove position (14) of the shock absorbing ring (9) and plays the role of assisting sliding and lateral shock absorption in the shock absorbing ring (9).

2. The explosion-proof magnetostrictive liquid level gauge according to claim 1, characterized in that: The measuring tube (1) comprises a transmitter (3), a measuring rod (4) and a limit seat (5); the bottom end of the transmitter (3) is fixedly connected to the top end of the measuring rod (4), and the bottom end of the measuring rod (4) is fixedly connected to the limit seat (5).

3. The explosion-proof magnetostrictive liquid level gauge according to claim 1, characterized in that: The float (2) comprises a float housing (6), an anti-collision ring (7), a permanent magnet (8), a shock absorbing ring (9), a balancing weight (10) and an external balancing weight (11); the anti-collision ring (7) is fixedly connected to the top and bottom of the float housing (6); the shock absorbing ring (9) is fixedly connected in the center of the float housing (6); the permanent magnet (8) is fixedly connected to the top of the shock absorbing ring (9); the balancing weight (10) is fixedly connected to the bottom of the shock absorbing ring (9); and the external balancing weight (11) is fixedly connected in the center of the outer wall of the float housing (6).

4. The explosion-proof magnetostrictive liquid level gauge according to claim 3, characterized in that: The shock absorbing ring (9) comprises a plastic shell (12), a connecting protrusion (13), an inner groove position (14), a slide groove (15), a spring (16) and a rotating ball (17). The top of the plastic shell (12) is fixedly connected with the connecting protrusion (13). The connecting protrusion (13) is provided in a plurality of groups and is symmetrically arranged at the top and bottom of the plastic shell (12). The plastic shell (12) is provided with an inner groove position (14). The inner groove position (14) is provided with a slide groove (15). There are six groups of slide grooves (15). A spring (16) is fixedly connected in each group of slide grooves (15). Six groups of rotating balls (17) are installed in the inner groove position (14).

5. The explosion-proof magnetostrictive liquid level gauge according to claim 4, characterized in that: The six groups of rotating balls (17) of the shock-absorbing ring (9) correspond one to one with the six groups of springs (16).

6. The explosion-proof magnetostrictive liquid level gauge according to claim 4, characterized in that: The shock absorbing ring (9) is fixed to the permanent magnet (8) and the balancing weight (10) via connecting protrusions (13) at the top and bottom ends.

7. The explosion-proof magnetostrictive liquid level gauge according to claim 3, characterized in that: The mass of the permanent magnet (8) is the same as the mass of the balancing weight (10).

Images