High-precision buoy liquid level transmitter density compensation assembly
By designing a high-precision float level transmitter density compensation component including magnetic float balls, elastic parts and sensors, the measurement inaccuracy caused by changes in media density is solved, high-precision density detection and dynamic compensation are achieved, and measurement is improved Accuracy and reliability.
Patent Information
- Application Number
- CN202420496439.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-14
AI Technical Summary
When measuring liquid level of the floating drum level transmitter, the measurement is inaccurate due to changes in the medium density, especially when it is necessary to meet the high accuracy requirements of level 0.2, density changes become a key factor affecting the measurement accuracy.
A high-precision floating cylinder liquid level transmitter density compensation assembly is designed, including a floating cylinder meter head, an outer cylinder assembly, an inner cylinder assembly and a density compensation assembly. The density compensation component detects the changes in media density in real time through the cooperation of magnetic float balls, elastic members and sensors, and dynamically compensates the measurement error of the float level transmitter through signals.
It realizes high-precision density detection and dynamic compensation, improves the measurement accuracy of the float level transmitter, has a simple structure and high reliability, and is suitable for various float level transmitters that require high-precision measurement.
Smart Images
Figure CN222505570U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid level measurement, in particular to a high-precision float liquid level transmitter density compensation component. Background Art
[0002] The float level transmitter measures the liquid level by measuring the change in buoyancy. However, when the medium is affected by factors such as temperature and pressure, its density will change, resulting in inaccurate measured liquid level values. For the float level transmitter that needs to meet the high precision requirements of 0.2 level, density change becomes a key factor affecting the measurement accuracy. Therefore, designing a density compensation module that can be used with the float level transmitter is the key to solving this problem. Utility Model Content
[0003] The utility model aims to provide a high-precision float liquid level transmitter density compensation component to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision float liquid level transmitter density compensation component, comprising a float gauge head, an outer barrel assembly and an inner barrel assembly; the float gauge head is arranged on the top of the outer barrel assembly; the inner barrel assembly is arranged in the inner cavity of the outer barrel assembly;
[0005] It also includes a density compensation component; the density compensation component includes a sensor, a magnetic block, a magnetic float ball, an elastic part and a bypass pipe; the bypass pipe is arranged on one side of the outer cylinder component; the bypass pipe is connected to the inner cavity of the outer cylinder component; the outer side surface of the bypass pipe is provided with the sensor and the magnetic block; the sensor includes a fixed end and a measuring end; the fixed end of the sensor is connected to the outer side surface of the bypass pipe; the measuring end of the sensor is connected to the magnetic block; the sensor is electrically connected to the float meter head; the magnetic float ball and the elastic part are provided inside the bypass pipe; the magnetic float ball is connected to the inner wall of the bypass pipe through the elastic part; the magnetic block and the magnetic float ball cooperate with each other.
[0006] Preferably, a guide rail is provided on one side of the bypass pipe close to the magnetic block; and the magnetic block is slidably connected to the guide rail.
[0007] Preferably, a guide rod is provided in the bypass pipe; and the magnetic levitation ball is sleeved on the outer side wall of the guide rod.
[0008] Preferably, a permanent magnet is provided on the outer side wall of the guide rod; the permanent magnet cooperates with the magnetic levitation ball.
[0009] Preferably, the float gauge is connected to the sensor via a wire.
[0010] Preferably, the buoy gauge head is connected to the top of the outer cylinder assembly through a flange.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. High-precision density detection: Through the interaction between the magnetic float ball and the elastic part, the change of medium density can be detected in real time to improve the measurement accuracy.
[0013] 2. Dynamic compensation: Dynamically compensate the measurement error of the float level transmitter according to the density change signal to improve the overall measurement accuracy.
[0014] 3. Simple structure and high reliability: The density compensation module has a simple structure and is easy to install and maintain, which improves the reliability of the equipment.
[0015] 4. Wide applicability: This density compensation module is suitable for various float level transmitters that require high-precision measurement and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0017] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle.
[0018] In the figure: 1-float meter head, 2-outer cylinder assembly, 3-inner cylinder assembly, 4-density compensation assembly, 41-sensor, 42-magnetic block, 43-magnetic float ball, 44-elastic member, 45-bypass pipe, 46-guide rail, 47-guide rod. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1 , Figure 2 The utility model provides a technical solution: The purpose of the utility model is to provide a high-precision float liquid level transmitter density compensation component. The utility model can detect the change of medium density in real time, and transmit the output signal to the top float head through a wire to participate in the calculation of the liquid level value to compensate for the measurement error of the float liquid level transmitter.
[0021] A high-precision float liquid level transmitter density compensation component comprises a float gauge head 1, an outer barrel assembly 2 and an inner barrel assembly 3. The float gauge head 1 is arranged on the top of the outer barrel assembly 2. The inner barrel assembly 3 is arranged in the inner cavity of the outer barrel assembly 2.
[0022] It is characterized in that it also includes a density compensation component 4. The density compensation component 4 includes a sensor 41, a magnetic block 42, a magnetic float ball 43, an elastic member 44 and a bypass pipe 45. The bypass pipe 45 is arranged on one side of the outer cylinder component 2. The bypass pipe 45 is connected to the inner cavity of the outer cylinder component 2. The outer side of the bypass pipe 45 is provided with the sensor 41 and the magnetic block 42. The sensor 41 includes a fixed end and a measuring end. The fixed end of the sensor 41 is connected to the outer side of the bypass pipe 45. The measuring end of the sensor 41 is connected to the magnetic block 42. The sensor 41 is electrically connected to the float meter head 1. The magnetic float ball 43 and the elastic member 44 are arranged inside the bypass pipe 45. The magnetic float ball 43 is connected to the inner side wall of the bypass pipe 45 through the elastic member. The magnetic block 42 and the magnetic float ball 43 cooperate with each other.
[0023] The bypass pipe 45 and the outer cylinder assembly 2 may be fixedly connected or detachably connected. The fixed connection method is welding. The detachable connection method is that the bypass pipe 45 is connected to the outer cylinder assembly via a flange.
[0024] A bypass pipe 45 is provided on the outer wall of the outer cylinder assembly 2, and the magnetic levitation ball 43 is arranged in the bypass pipe 45. The bypass pipe 45 is located below the connecting flange of the outer cylinder assembly 2, so that the magnetic levitation ball 43 is always immersed in the medium. A guide hole is provided inside the magnetic levitation ball 43, which can slide up and down along the guide rod 47, and the elastic member 44 is supported below the magnetic levitation ball 43. The magnetic levitation ball 43 is affected by its own gravity, the buoyancy of the medium and the supporting force of the elastic member 44 in the medium. The gravity is designed to be slightly greater than the buoyancy, and the elastic member 44 is designed to work within the elastic range, so that the magnetic levitation ball 43 is always kept in a force balance state. An attractive force is generated between the magnetic levitation ball 43 and the magnetic block 42.
[0025] Furthermore, a guide rail 46 is provided on one side of the bypass pipe 45 close to the magnetic block 42. The magnetic block 42 is slidably connected to the guide rail 46. When the magnetic floating ball 43 floats up and down, an attraction is generated on the magnetic block 42, causing the magnetic block 42 to move to a certain extent. When the magnetic block 42 moves, friction is generated with the outer surface of the outer cylinder assembly 2. The guide rail 46 can greatly reduce the friction between the magnetic block 42 and the outer surface of the outer cylinder assembly 2, thereby reducing the influence of friction on the measurement result.
[0026] Furthermore, a guide rod 47 is provided in the bypass pipe 45. The magnetic floating ball 43 is sleeved on the outer wall of the guide rod 47. This design prevents the magnetic floating ball 43 from tilting due to the attraction of the magnetic block 42, thereby generating friction with the inner wall of the outer cylinder assembly 2 and affecting the result.
[0027] Furthermore, a permanent magnet is provided on the outer wall of the guide rod 47. The permanent magnet cooperates with the magnetic levitation ball 43. It should be noted here that a repulsive force is generated between the permanent magnet and the magnetic levitation ball 43, so that the magnetic levitation ball 43 is in a suspended state relative to the guide rod 47, greatly reducing friction.
[0028] Furthermore, the float meter head 1 is connected to the sensor 41 via a wire.
[0029] The sensor 41 is a force sensor.
[0030] In the present application, a signal receiver may be provided on the buoy gauge head 1, and a signal transmitter may be provided on the sensor 41. The sensor 41 is wirelessly connected to the buoy gauge head 1, so that the area occupied by the entire device is reduced.
[0031] Furthermore, the buoy gauge head 1 is connected to the top of the outer cylinder assembly 2 via a flange, so as to achieve a quick disassembly effect.
[0032] G 重力 =F 弹簧 +F 浮力 ;
[0033] Among them G 重力 is a constant;
[0034] According to Hooke's law:
[0035] The spring works within the elastic range, F 弹簧 =k×x (k is called the elastic coefficient, which is a constant, and x is the deformation variable);
[0036] F 浮力 =ρgV 球 (g, V 球 are all constants);
[0037] After integration: G 重力 =F 弹簧 +F 浮力 =k×x+ρgV 球 .
[0038] After sorting, ρ=(G 重力 -k×x) / gV 球 Therefore, the medium density ρ is proportional to the spring deformation x.
[0039] Working principle:
[0040] When the density of the medium changes, the compression amount of the elastic member 44 will change, driving the magnetic float ball 43 to move up and down until a new force balance state is reached. A mutual attraction force is generated between the magnetic float ball 43 and the magnetic block 42, and the magnetic block 42 is fixedly mounted on the high-precision sensor 41. When the magnetic float ball 43 floats up and down, it attracts the magnetic block 42, causing the magnetic block 42 to produce a small up and down movement, and exerts a pulling force on the sensor 41. The sensor 41 outputs a signal after being subjected to the force. This signal can reflect the change in the density of the medium, and transmit the signal to the signal processing part in the float head 1, participating in the liquid level value calculation of the entire float liquid level transmitter, thereby obtaining an accurate liquid level value.
[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A high-precision float level transmitter density compensation assembly, comprising a float gauge head (1), an outer barrel assembly (2) and an inner barrel assembly (3); the float gauge head (1) is arranged on the top of the outer barrel assembly (2); the inner barrel assembly (3) is arranged in the inner cavity of the outer barrel assembly (2); It is characterized in that The invention also comprises a density compensation component (4); the density compensation component (4) comprises a sensor (41), a magnetic block (42), a magnetic floating ball (43), an elastic member (44) and a bypass pipe (45); the bypass pipe (45) is arranged on one side of the outer cylinder component (2); the bypass pipe (45) is connected to the inner cavity of the outer cylinder component (2); the outer side surface of the bypass pipe (45) is provided with the sensor (41) and the magnetic block (42); the sensor (41) comprises a fixed end and a measuring end. end; the fixed end of the sensor (41) is connected to the outer side of the bypass pipe (45); the measuring end of the sensor (41) is connected to the magnetic block (42); the sensor (41) is electrically connected to the float gauge (1); the bypass pipe (45) is provided with the magnetic floating ball (43) and the elastic member (44); the magnetic floating ball (43) is connected to the inner side wall of the bypass pipe (45) through the elastic member; the magnetic block (42) and the magnetic floating ball (43) cooperate with each other.
2. A high-precision float level transmitter density compensation component according to claim 1, characterized in that: A guide rail (46) is provided on one side of the bypass pipe (45) close to the magnetic block (42); the magnetic block (42) is slidably connected to the guide rail (46).
3. A high-precision float level transmitter density compensation assembly according to claim 1, characterized in that: A guide rod (47) is arranged inside the bypass pipe (45); and the magnetic floating ball (43) is sleeved on the outer side wall of the guide rod (47).
4. A high-precision float level transmitter density compensation assembly according to claim 3, characterized in that: The outer wall of the guide rod (47) is provided with a permanent magnet; the permanent magnet cooperates with the magnetic floating ball (43).
5. The high-precision float level transmitter density compensation component according to claim 1 is characterized in that: The float gauge (1) is connected to the sensor (41) via a wire.
6. A high-precision float level transmitter density compensation assembly according to claim 1, characterized in that: The buoy gauge head (1) is connected to the top of the outer cylinder assembly (2) via a flange.