Guide wheel type magnetic floater liquid level meter with built-in double-channel measuring cylinder and capable of being directly observed

Abstract

The utility model provides a guide wheel type magnetic floater liquid level meter with a built-in double-channel measuring cylinder and capable of being directly observed, and belongs to the technical field of solar photo-thermal power generation technology and fused salt energy storage engineering. The problems that a liquid level meter for molten salt liquid level measurement is frozen and blocked at low temperature, the actual liquid level and the display liquid level are inconsistent in position, and false water level display is generated are solved. The device comprises a built-in double-channel measuring cylinder, an external cylinder, a heavy floating ball and a magnetic floating ball, the built-in double-channel measuring cylinder and the external cylinder are vertically arranged inside and outside a storage tank to be measured respectively, and an inner cavity of the built-in double-channel measuring cylinder is divided into a first flow channel and a second flow channel by a double-channel partition plate; the bottom of the first flow channel is communicated with the bottom of the second flow channel, the heavy floating ball is arranged in the first flow channel, the magnetic floating ball is arranged in the external cylinder, and the heavy floating ball and the magnetic floating ball are connected through a conduction wire. The device is mainly used for molten salt liquid level measurement.

Description

Technical Field

[0001] The utility model belongs to the field of solar thermal power generation technology and molten salt energy storage engineering technology, and particularly relates to a guide wheel type magnetic float liquid level gauge with a built-in double-channel measuring cylinder which can be directly observed. Background Art

[0002] To ensure the safety of the power grid, safe and reliable solar thermal power generation and molten salt energy storage technologies will be widely used.

[0003] As one of the main working media in the field of solar thermal power generation and molten salt energy storage technology, molten salt has the advantages of high operating temperature under normal pressure, large heat capacity, stable chemical properties, and no pollution. However, due to the high freezing point of molten salt (the freezing point of common binary salts is above 230°C), there are some problems in on-site measurement.

[0004] Figure 1 It is a level gauge that uses conventional on-site measurement methods. It uses the principle of communicating vessels to lead the measured liquid to the measuring cylinder. The liquid level of the measuring cylinder is the same as the measured liquid level. The measuring cylinder is equipped with a magnetic float ball, and the position of the magnetic float ball is the actual measured liquid level. This measurement technology has the advantages of simple method and high accuracy when measuring conventional liquid media (such as water) on-site. However, when measuring liquid molten salt, if this technical means is used, it is necessary to heat and insulate the connecting pipe and measuring cylinder connected to the measured equipment. Since the medium in the measuring cylinder is in the dead zone of flow, the area with poor heating and insulation cools down very quickly. Once the molten salt solidifies, it will bring great safety hazards. Therefore, this measurement method is rarely used in the field of actual molten salt level measurement.

[0005] Figure 2 It is an internal float level gauge that is currently widely used in the field of molten salt level measurement. It matches the mass and density relationship of the heavy float, magnetic float, and measured medium, and uses conductive wires and pulleys to realize the measurement and on-site display of the liquid level. When using this measurement technology, the change direction of the heavy float (actual liquid level position) is exactly opposite to that of the magnetic float, so the scale of the on-site display dial needs to be inverted. Although this technology can realize the on-site measurement and display requirements of molten salt, due to the inconsistency between the actual liquid level and the displayed liquid level position, it is necessary to judge the molten salt liquid level height through the display panel value. This problem is still acceptable on small molten salt storage equipment, but on large molten salt storage equipment (diameter 20m-50m, height 14-18m), it is difficult to read the specific value, and even if the actual operating value is read, it is difficult to accurately judge the specific liquid level height on the equipment site, which loses the meaning of on-site display. Therefore, this technology is rarely used on large molten salt storage equipment, and because the heavy float is easy to swing left and right with the fluctuation of the liquid level, it drives the magnetic float to move, forming a false water level display.

[0006] It can be seen that the existing level gauges for measuring molten salt liquid level have problems such as low-temperature freezing of the instrument, inconsistency between the actual liquid level and the displayed liquid level, and false water level display. Utility Model Content

[0007] In view of this, the utility model aims to propose a guide wheel type magnetic float level gauge with a built-in dual-channel measuring tube that can be directly observed, so as to solve the problems of existing molten salt liquid level measurement level gauges such as instrument freezing and blockage, inconsistency between actual liquid level and displayed liquid level position, and false water level display.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a guide wheel type magnetic float level gauge with a built-in dual-channel measuring cylinder that can be directly observed, which includes a built-in dual-channel measuring cylinder, an external cylinder, a heavy float ball and a magnetic float ball, the built-in dual-channel measuring cylinder and the external cylinder are respectively vertically arranged inside and outside the measured storage tank, a dual-channel partition plate is arranged inside the built-in dual-channel measuring cylinder, and the inner cavity of the built-in dual-channel measuring cylinder is divided into a first flow channel and a second flow channel by the dual-channel partition plate, the bottoms of the first flow channel and the second flow channel are connected, the heavy float ball is arranged in the first flow channel, the magnetic float ball is arranged in the external cylinder, the heavy float ball and the magnetic float ball are connected by a conduction line, one end of the conduction line is connected to the bottom of the heavy float ball, and the other end of the conduction line is connected to the top of the magnetic float ball, and the height and lifting action of the heavy float ball and the magnetic float ball are consistent.

[0009] Furthermore, a display panel is provided on one side of the external cylinder.

[0010] Furthermore, air pressure balance ports are provided on the side walls of the top of the first flow channel and the top of the second flow channel.

[0011] Furthermore, a hydraulic balance port is provided on the side wall at the bottom of the second flow channel.

[0012] Furthermore, a first pulley and a second pulley are respectively provided at the bottom of the first flow channel and the bottom of the second flow channel, a third pulley and a fourth pulley are respectively provided above the second flow channel and above the external cylinder, and one end of the conduction line passes through the first pulley, the second pulley, the third pulley and the fourth pulley in sequence and is connected to the top of the magnetic levitation ball.

[0013] Furthermore, the top of the built-in dual-channel measuring cylinder and the top of the external cylinder are connected via a sealing device, and the third pulley and the fourth pulley are both arranged in the sealing device.

[0014] Furthermore, a fixing ring is provided at the bottom of the first flow channel.

[0015] Furthermore, a drain valve is provided at the bottom end of the external cylinder.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model makes the lifting and lowering actions of the heavy float ball and the magnetic float ball consistent by setting the built-in dual-channel measuring cylinder, the external cylinder and the pulley, and ensures the consistency of the height and lifting actions of the heavy float ball and the magnetic float ball by adjusting the length of the transmission line, so that the staff can intuitively and accurately judge the specific liquid level height in the measured storage tank from the height of the magnetic float ball in the external cylinder, realizing the intuitive measurement of the device;

[0018] 2. The utility model sets the heavy float ball into the first flow channel of the built-in dual-channel measuring cylinder, and adjusts the width of the first flow channel to match the size of the heavy float ball, so as to prevent the heavy float ball from swinging left and right with the fluctuation of the liquid level and driving the magnetic float ball to move, thereby forming a false water level display, so that the measurement result of the device is more accurate;

[0019] 3. The utility model solves the problem of low-temperature freezing and blocking by setting up a built-in dual-channel measuring cylinder and an external cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of a liquid level meter of a conventional on-site measurement means described in the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of an internal float level gauge which is widely used in the field of molten salt level measurement described in the utility model;

[0023] Figure 3 It is a schematic diagram of the overall structure of a guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to the utility model;

[0024] Figure 4 The utility model is a front view of a display panel in a guide wheel type magnetic float level gauge with a built-in dual-channel measuring cylinder capable of direct observation.

[0025] 1- built-in dual-channel measuring cylinder, 2- external cylinder, 3- heavy float ball, 4- magnetic float ball, 5- conduction line, 6- dual-channel partition plate, 7- air pressure balance port, 8- hydraulic balance port, 9- sealing device, 10- drain valve, 11- first pulley, 12- second pulley, 13- third pulley, 14- fourth pulley, 15- fixing ring, 16- display panel, 17- measured storage tank, 18- measuring cylinder. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0027] See also Figure 1-4 The present embodiment is described as a guide wheel type magnetic float level gauge with a built-in dual-channel measuring cylinder that can be directly observed, comprising a built-in dual-channel measuring cylinder 1, an external cylinder 2, a heavy float ball 3 and a magnetic float ball 4, wherein the built-in dual-channel measuring cylinder 1 and the external cylinder 2 are respectively vertically arranged inside and outside the measured storage tank 17, a dual-channel partition plate 6 is arranged inside the built-in dual-channel measuring cylinder 1, the inner cavity of the built-in dual-channel measuring cylinder 1 is divided into a first flow channel and a second flow channel by the dual-channel partition plate 6, the bottoms of the first flow channel and the second flow channel are connected, the heavy float ball 3 is arranged in the first flow channel, the magnetic float ball 4 is arranged in the external cylinder 2, the heavy float ball 3 and the magnetic float ball 4 are connected by a conductive line 5, one end of the conductive line 5 is connected to the bottom of the heavy float ball 3, and the other end of the conductive line 5 is connected to the top of the magnetic float ball 4, the height and lifting action of the heavy float ball 3 and the magnetic float ball 4 are consistent, and the built-in dual-channel measuring cylinder 1 in this embodiment is located inside the measured storage tank 17 and is in direct contact with the measured medium.

[0028] In this embodiment, the built-in dual-channel measuring cylinder 1, the external cylinder 2 and the pulley are arranged to make the lifting and lowering actions of the heavy float ball 3 and the magnetic float ball 4 consistent, and by adjusting the length of the conductive line 5, the height and lifting and lowering actions of the heavy float ball 3 and the magnetic float ball 4 are ensured to be consistent, so that the staff can intuitively and accurately judge the specific liquid level height in the measured storage tank 17 from the height of the magnetic float ball 4 in the external cylinder 2, thereby realizing intuitive measurement of the device.

[0029] In this embodiment, the first flow channel is used to accommodate the heavy float 3, and the second flow channel is used as a channel for the lifting, inspection and maintenance of the transmission line 5. The heavy float 3 is set in the first flow channel of the built-in dual-channel measuring cylinder 1. The width of the first flow channel 1 is adjusted to adapt to the size of the heavy float to prevent the heavy float 3 from swinging left and right with the fluctuation of the liquid level and driving the magnetic float 4 to move, thereby forming a false water level display, so that the measurement result of the device is more accurate.

[0030] This embodiment solves the problem of low-temperature freezing and blocking by providing a built-in dual-channel measuring cylinder 1 and an external cylinder 2.

[0031] In this embodiment, the density of the heavy float ball 3 is less than that of the measured medium, so that the heavy float ball 3 floats on the measured liquid surface.

[0032] In this embodiment, the heavy float ball 3 drives the magnetic float ball 4 to change with the liquid level through the conductive wire 5. During calibration or calibration, the heavy float ball 2 and the magnetic float ball 4 are placed at the normal working liquid level of the device under test by adjusting the length of the conductive wire 5.

[0033] In this embodiment, a display panel 16 is disposed on one side of the external cylinder 2 , and the display panel 16 is used for the staff to read the liquid level in the measured storage tank 17 .

[0034] In this embodiment, an air pressure balance port 7 is provided on the side wall at the top of the first flow channel and the top of the second flow channel, and the air pressure balance port 7 ensures that the air pressure in the first flow channel and the second flow channel remains the same as the air pressure in the measured tank 17. A hydraulic balance port 8 is provided on the side wall at the bottom of the second flow channel, and the measured medium in the measured tank 17 flows into the built-in dual-channel measuring cylinder 1 through the hydraulic balance port 8, and forms a communicating vessel structure with the first flow channel and the second flow channel of the built-in dual-channel measuring cylinder 1, so that the liquid levels in the first flow channel, the second flow channel and the measured tank 17 are the same.

[0035] In this embodiment, a first pulley 11 and a second pulley 12 are respectively provided at the bottom of the first flow channel and the bottom of the second flow channel, a third pulley 13 and a fourth pulley 14 are respectively provided above the second flow channel and above the external cylinder 2, one end of the conductive line 5 passes through the first pulley 11, the second pulley 12, the third pulley 13 and the fourth pulley 14 in sequence and is connected to the top of the magnetic levitation ball 4, the conductive line 5 changes direction twice through the first pulley 11, the second pulley 12, the third pulley 13 and the fourth pulley 14, so that the lifting and lowering actions of the heavy-floating ball 3 and the magnetic-floating ball 4 are consistent, and by adjusting the length of the conductive line 8, the height and lifting and lowering actions of the heavy-floating ball 3 and the magnetic-floating ball 4 are ensured to be consistent.

[0036] In this embodiment, the top of the built-in dual-channel measuring cylinder 1 and the top of the external cylinder 2 are connected by a sealing device 9, and the third pulley 13 and the fourth pulley 14 are both arranged in the sealing device 9. The sealing device 9 is used for sealing the entire device, and is connected to the top of the built-in dual-channel measuring cylinder 1 and the external cylinder 2 through a flange structure, which is convenient for maintenance of the top of the built-in dual-channel measuring cylinder 1 and the external cylinder 2 when necessary.

[0037] In this embodiment, a fixing ring 15 is provided at the bottom of the first flow channel. When the liquid level is lower than the position of the fixing ring 15, the heavy float ball 3 will stagnate, and this position is also the lowest point of the measurable liquid level.

[0038] In this embodiment, a drain valve 10 is provided at the bottom end of the external cylinder 2, and the drain valve 1 is used to drain clean water during a water pressure test.

[0039] The conductive wire 5 in this embodiment is made of non-ferromagnetic high temperature resistant material with high flexibility and resistance to molten salt corrosion, and materials such as 316H and 347H series can be selected.

[0040] In this embodiment, the external cylinder 2 can be made of stainless steel.

[0041] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation, characterized in that: The invention comprises an internal dual-channel measuring cylinder (1), an external cylinder (2), a heavy float ball (3) and a magnetic float ball (4). The internal dual-channel measuring cylinder (1) and the external cylinder (2) are respectively arranged vertically inside and outside the measured storage tank (17). A dual-channel partition plate (6) is arranged inside the internal dual-channel measuring cylinder (1). The inner cavity of the internal dual-channel measuring cylinder (1) is divided into a first flow channel and a second flow channel by the dual-channel partition plate (6). The bottoms of the first flow channel and the second flow channel are connected. The heavy float ball (3) is arranged in the first flow channel. The magnetic float ball (4) is arranged in the external cylinder (2). The heavy float ball (3) and the magnetic float ball (4) are connected by a conductive line (5). One end of the conductive line (5) is connected to the bottom of the heavy float ball (3), and the other end of the conductive line (5) is connected to the top of the magnetic float ball (4). The height and lifting action of the heavy float ball (3) and the magnetic float ball (4) are consistent.

2. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 1, characterized in that: A display panel (16) is provided on one side of the external cylinder (2).

3. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 1, characterized in that: Air pressure balance ports (7) are provided on the side walls of the top of the first flow channel and the top of the second flow channel.

4. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 1, characterized in that: A hydraulic balance port (8) is provided on the side wall at the bottom of the second flow channel.

5. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 1, characterized in that: A first pulley (11) and a second pulley (12) are respectively arranged at the bottom of the first flow channel and the bottom of the second flow channel, a third pulley (13) and a fourth pulley (14) are respectively arranged above the second flow channel and above the external cylinder (2), and one end of the conductive wire (5) passes through the first pulley (11), the second pulley (12), the third pulley (13) and the fourth pulley (14) in sequence and is connected to the top of the magnetic levitation ball (4).

6. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 5, characterized in that: The top of the built-in dual-channel measuring cylinder (1) and the top of the external cylinder (2) are connected via a sealing device (9), and the third pulley (13) and the fourth pulley (14) are both arranged in the sealing device (9).

7. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 1, characterized in that: A fixing ring (15) is provided at the bottom of the first flow channel.

8. The guide wheel type magnetic float level gauge with built-in dual-channel measuring cylinder capable of direct observation according to claim 1, characterized in that: A sewage valve (10) is provided at the bottom end of the external cylinder (2).

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