Steam boiler using multiple electrodes to detect water level

Abstract

The utility model discloses a steam boiler using multiple electrodes to detect water level, which comprises a boiler body and a water storage device arranged in the boiler body, a water level detector is arranged on the side wall of the top end of the water storage device, the water level detector comprises a mounting plate arranged on the side wall of the top end and six mounting pipes arranged on the mounting plate, the six water level probes are respectively arranged in the mounting pipe and are arranged from long to short; a first insulating sleeve sleeved on the water level probe is arranged in the mounting pipe, a conical cavity with an upward taper is arranged in the first insulating sleeve, and a ball sealer with the diameter larger than the inner diameter of the first insulating sleeve is arranged in the conical cavity. According to the water level detector, the accuracy of the water level in the boiler is improved by arranging the six water level probes, the longest water level probe serves as a common end, the other water level probes are arranged from long to short, a wider water level range can be covered through the water level probes with different lengths, and therefore continuous water level detection is achieved.

Description

Technical Field

[0001] The utility model relates to the field of water level detection equipment, in particular to a steam boiler which uses multiple electrodes to detect water levels. Background Art

[0002] The water level gauge of a steam boiler is an important safety accessory in boiler operation. It is mainly used to display and monitor the water level in the boiler. It is based on the principle of communicating vessels, ensuring that a connecting system is formed between the boiler drum and the water level gauge so that the water levels of the two are consistent. In this way, by observing the water level gauge, the water level in the boiler drum can be accurately understood.

[0003] Because the water inside the steam boiler will boil when it is running, the water vapor generated by the boiling water will enter the connecting system and form an air cavity in the tube that displays the water level, causing errors in the display results of the water level gauge, leaving a safety hazard to the boiler. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a steam boiler that uses multiple electrodes to detect water levels, which solves the problem that when the steam boiler is running, the water inside will boil, and the water vapor generated by the boiling water will enter the connecting system, forming an air cavity in the tube that displays the water level, causing errors in the display results of the water level gauge, leaving a safety hazard to the boiler.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: A steam boiler using multiple electrodes to detect water level, comprising: a furnace body, a furnace at the bottom of the furnace body, a flue running through the entire furnace body, a barrel arranged above the flue, a fuel system arranged in the furnace, a water reservoir arranged inside the furnace body, a pressure control system arranged in the furnace body, and a steam delivery system connected to the water reservoir, comprising: a water level detector is arranged on the top side wall of the water reservoir, the water level detector comprises: a mounting plate arranged on the top side wall, six mounting tubes arranged on the mounting plate, and six water level probes respectively arranged in the mounting tubes and arranged from long to short; a first insulating sleeve is arranged in the mounting tube, which is sleeved on the water level probe, a conical cavity with an upward taper is arranged in the first insulating sleeve, and a sealing ball with a diameter larger than the inner diameter of the first insulating sleeve is arranged in the conical cavity.

[0006] Preferably, an internal thread is provided at the upper end of the mounting tube, a nut tube matching the internal thread is provided at the upper end of the mounting tube, a second insulating sleeve is fixedly provided in the nut tube, and the water level probe is fixedly provided in the second insulating sleeve; the wiring terminal of the water level probe is located at the upper end of the second insulating sleeve.

[0007] Preferably, a conical recess is provided at the upper end of the first insulating sleeve, and the central axis of the conical cavity and the conical recess coincides with the central axis of the first insulating sleeve.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. The water level detector in the steam boiler that uses multi-electrode water level detection improves the accuracy of the water level in the boiler by setting six water level probes. The longest water level probe is the common end, and the remaining water level probes are arranged from long to short. Through water level probes of different lengths, a wider water level range can be covered, thereby achieving continuous water level detection. When the water level rises or falls, probes of different lengths will be activated or deactivated in turn, so that the change of water level can be continuously tracked; the arrangement of multiple probes can provide multiple water level signal points. By comparing the status of different probes, the height of the water level can be more accurately judged. This multi-point detection method can reduce the impact of single probe error or failure on the overall water level detection. Shorter probes are more easily activated by lower water levels, while longer probes are more sensitive to higher water levels. This design enables the system to respond to changes in water levels more quickly and improves the sensitivity of detection; the arrangement of the probes also provides redundancy, that is, when one or several probes fail, other probes can still continue to work, ensuring the continuity and reliability of water level detection; because the probes are arranged according to length, the calibration and maintenance process is relatively simplified. The system can be checked and calibrated by comparing the status of different probes, and it is also convenient to replace or repair individual probes.

[0010] 2. A conical cavity is arranged in the first insulating sleeve of the water level detector in the steam boiler which uses multiple electrodes to detect the water level. A sealing ball is arranged in the conical cavity. When the water level probe is inserted into the first insulating sleeve, the sealing ball is pushed open and passes through the first insulating sleeve into the water storage tank. When the water level probe fails and needs to be repaired and replaced, the water level probe is pulled out, and the sealing ball is blown up by the water vapor pressure and presses against the upper end of the conical cavity to prevent water vapor from leaking from the installation pipe. This design can replace and repair the water level probe without stopping the boiler, thereby minimizing the impact on the production line and ensuring the orderly progress of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the structure of a steam boiler using multiple electrodes to detect water level;

[0012] Figure 2 This is a schematic diagram of the structure of the water level detector.

[0013] In the figure: water storage tank 1, water level detector 2, mounting plate 3, mounting tube 4, water level probe 5, first insulating sleeve 6, conical cavity 7, blocking ball 8, nut tube 9, second insulating sleeve 10, terminal 11, conical depression 12. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0015] See also Figure 1 to Figure 2 The present embodiment provides a steam boiler for detecting water level using multiple electrodes, comprising: a furnace body, a furnace provided at the bottom of the furnace body, a flue running through the entire furnace body, a barrel provided above the flue, a fuel system provided in the furnace body, a water reservoir 1 provided inside the furnace body, a pressure control system provided in the furnace body, and a steam delivery system connected to the water reservoir 1, comprising: a water level detector 2 is provided on the top side wall of the water reservoir 1, the water level detector 2 comprises: a mounting plate 3 provided on the top side wall, six mounting tubes 4 provided on the mounting plate 3, and six water level probes 5 respectively provided in the mounting tubes 4 and arranged from long to short; a first insulating sleeve 6 is provided in the mounting tube 4 and is sleeved on the water level probe 5, a conical cavity 7 with an upward taper is provided in the first insulating sleeve 6, and a sealing ball 8 with a diameter larger than the inner diameter of the first insulating sleeve 6 is provided in the conical cavity 7. When the water level probe 5 is inserted into the first insulating sleeve 6, the sealing ball 8 is pushed open and passes through the first insulating sleeve 6 into the water tank 1. When the water level probe 5 fails and needs to be repaired and replaced, the water level probe 5 is pulled out. The sealing ball 8 is blown up under the action of water vapor pressure and presses against the upper end of the conical cavity 7 to prevent water vapor from leaking from the installation tube 4.

[0016] The upper end of the installation tube 4 is provided with an internal thread, and a nut tube 9 matching the internal thread is provided on the upper end of the installation tube 4. A second insulating sleeve 10 is fixedly provided in the nut tube 9, and the water level probe 5 is fixedly provided in the second insulating sleeve 10; the connection terminal 11 of the water level probe 5 is located at the upper end of the second insulating sleeve 10. The various components in the installation tube 4 should be tightly combined to prevent steam leakage.

[0017] The upper end of the first insulating sleeve 6 is provided with a conical recess 12, and the central axis of the conical cavity 7 and the conical recess 12 coincides with the central axis of the first insulating sleeve 6. The conical recess 12 facilitates the water level probe 5 to pass through the first insulating sleeve 6 smoothly when being inserted.

[0018] The principle of a steam boiler using multiple electrodes to detect water level in the utility model:

[0019] The arrangement of the water level probes 5 of the water level detector 2 can ensure that at different water level heights, there is always a corresponding probe that can accurately reflect the water level situation. When the water level begins to drop, the shortest water level probe 5 will lose contact with the water first because its end is at the highest position. As the water level continues to drop, the longer water level probes 5 will also lose contact with the water and be triggered in turn; specifically, when the water level drops to a certain height, the water level probe 5 corresponding to the height will trigger a signal change due to the loss of water conductivity. This signal change is usually manifested as an increase in resistance value because the conductivity of water decreases. The control system will accurately judge the current water level height based on the changes in these resistance values.

[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steam boiler using multiple electrodes to detect water level, comprising: A furnace body is provided with a furnace at the bottom of the furnace body, a flue running through the entire furnace body, a barrel provided above the flue, a fuel system provided in the furnace, a water reservoir (1) provided inside the furnace body, a pressure control system provided inside the furnace body, and a steam delivery system connected to the water reservoir (1), characterized in that a water level detector (2) is provided on the top side wall of the water reservoir (1), and the water level detector (2) comprises: a mounting plate (3) provided on the top side wall, six mounting pipes (4) provided on the mounting plate (3), and six water level probes (5) respectively provided in the mounting pipes (4) and arranged from long to short; a first insulating sleeve (6) is provided in the mounting pipe (4) and is sleeved on the water level probe (5), a conical cavity (7) with an upward taper is provided in the first insulating sleeve (6), and a sealing ball (8) having a diameter greater than the inner diameter of the first insulating sleeve (6) is provided in the conical cavity (7).

2. A steam boiler using multiple electrodes to detect water level according to claim 1, characterized in that: The upper end of the mounting tube (4) is provided with an internal thread, the upper end of the mounting tube (4) is provided with a nut tube (9) matched with the internal thread, a second insulating sleeve (10) is fixedly provided in the nut tube (9), and the water level probe (5) is fixedly provided in the second insulating sleeve (10); the connection terminal (11) of the water level probe (5) is located at the upper end of the second insulating sleeve (10).

3. A steam boiler using multiple electrodes to detect water level according to claim 2, characterized in that: A conical recess (12) is provided at the upper end of the first insulating sleeve (6), and the central axis of the conical cavity (7) and the conical recess (12) coincides with the central axis of the first insulating sleeve (6).

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