A gas boiler water level monitoring and alarming device

Abstract

The utility model relates to a boiler safety monitoring technical field, concretely is a kind of gas-fired boiler water level monitoring alarm device, including boiler main body, the bottom side of boiler main body is connected with capacitive water level measurement component, wherein, the capacitive water level measurement component includes measuring cylinder, fixed part, liquid phase mouth and capacitive liquid level sensor, the middle part side of measuring cylinder is connected with the bottom of boiler main body by fixed part, the bottom of measuring cylinder is communicated with the bottom of boiler main body, the bottom of capacitive liquid level sensor is inserted into the inside of measuring cylinder and is connected the top of measuring cylinder by screw thread, the outside of boiler main body is installed with display component, the outside of boiler main body is installed with spraying component. The utility model uses capacitive water level measurement component, determines water level height by detecting the capacitance change between inner electrode and outer electrode, is not influenced by water flow fluctuation and scale attachment in boiler, and measurement precision is high.

Description

Technical Field

[0001] This utility model relates to the field of boiler safety monitoring technology, specifically a water level monitoring and alarm device for gas-fired boilers. Background Technology

[0002] Gas-fired boilers are commonly used thermal energy equipment in industrial production and residential heating, and water level control is crucial. If the water level in the boiler is too high, it will cause water to be carried over into the steam, affecting the steam quality and potentially leading to a boiler overfilling accident that damages boiler accessories. If the water level is too low, the boiler's heating surfaces will be exposed, causing them to overheat, deform, crack, or even explode, resulting in serious safety accidents. Currently, most gas-fired boiler water level monitoring devices on the market use float-type or electrode-type measurement methods. Float-type devices are easily affected by fluctuations in water flow within the boiler, resulting in lower measurement accuracy. Furthermore, the float is prone to wear and jamming after prolonged use, leading to monitoring failure. Electrode-type devices are easily affected by scale buildup, requiring frequent cleaning and maintenance, increasing the workload of staff and equipment maintenance costs. In addition, most existing water level monitoring devices only have alarm functions, failing to provide timely emergency measures when water levels are abnormal, still requiring manual intervention and posing safety hazards. Therefore, this paper proposes a gas-fired boiler water level monitoring and alarm device. Utility Model Content

[0003] In view of this, the present invention provides a gas-fired boiler water level monitoring and alarm device, which aims to solve one of the technical problems of low measurement accuracy, poor stability, inconvenient maintenance and lack of emergency handling function in the existing gas-fired boiler water level monitoring devices.

[0004] The technical solution of this utility model embodiment is implemented as follows: A gas-fired boiler water level monitoring and alarm device includes a boiler body. A capacitive water level measuring component is connected to one side of the bottom of the boiler body. The capacitive water level measuring component includes a measuring cylinder, a fixing component, a liquid phase port, and a capacitive liquid level sensor. One side of the middle part of the measuring cylinder is connected to the bottom of the boiler body through the fixing component. The bottom of the measuring cylinder is connected to the bottom of the boiler body. The bottom of the capacitive liquid level sensor is inserted into the interior of the measuring cylinder and connected to the top of the measuring cylinder by a thread. A display component is installed on the outside of the boiler body, and a spray component is installed on the outside of the boiler body.

[0005] A further preferred embodiment: the boiler body includes a boiler shell, an observation window, and a chimney, with the chimney installed on the top of the boiler shell and the observation window located on the outer side wall of the boiler shell.

[0006] A further preferred embodiment: the capacitive water level measuring assembly includes a connecting pipe, a fixing sleeve, a transparent glass tube, and a regulating valve. The measuring tubes are symmetrically connected to each other on the side away from the fixing member. A regulating valve is installed on each connecting pipe. A fixing sleeve is installed at one end of each connecting pipe. A transparent glass tube is installed between the two sets of fixing sleeves.

[0007] A further preferred embodiment: the display assembly includes a mounting base, a folding frame, a mounting plate, a display screen, and an alarm light. The mounting base is threaded to the outer side wall of the boiler body. The outer surface of the mounting base is threaded with the folding frame. One end of the folding frame is threaded with the display screen through the mounting plate. An alarm light is installed on the top of the display screen.

[0008] A further preferred embodiment: the spray assembly includes a water storage tank, a spray pump, and a spray pipe. The water storage tank is located on the outside of the boiler body and is connected to the water inlet of the boiler body via a pipe, which is equipped with a water supply valve. The spray pump is located on the connecting pipe between the water storage tank and the spray pipe. One end of the spray pipe is connected to the outlet of the spray pump, and the other end of the spray pipe extends to the top of the boiler body.

[0009] A further preferred embodiment: the display screen has a control module installed inside, the control module uses an STM32 series microcontroller, and the display screen, alarm light and capacitive water level measurement component are all electrically connected to the control module.

[0010] The present invention has the following advantages due to the adoption of the above technical solution: 1. This utility model adopts a capacitive water level measuring component, which determines the water level by detecting the change in capacitance between the inner and outer electrodes. It is not affected by water flow fluctuations and scale buildup in the boiler, and has high measurement accuracy. In addition, the capacitive sensor is made of high temperature and corrosion resistant materials, which has strong stability and long service life, reducing maintenance frequency and cost. 2. This utility model can display the current water level and upper and lower limit thresholds in real time through the display screen of the display component, so that the staff can intuitively understand the water level situation; the alarm light or buzzer alarm can issue different warning signals according to the degree of water level abnormality, so that the staff can promptly detect and deal with water level problems, and further ensure the safe and stable operation of the boiler. 3. This utility model has a simple structure, reasonable installation location, and convenient maintenance. It does not require complicated operating procedures, which reduces the difficulty of operation and maintenance costs for staff. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a partial structural view of the present invention from the front. Figure 3 This is a structural diagram of the capacitive water level measuring component of this utility model; Figure 4 This is a structural diagram of the capacitive liquid level sensor of this utility model; Figure 5 This is an exploded view of the display component of this utility model.

[0013] Figure label: 10. Boiler body; 101. Boiler shell; 102. Observation window; 103. Chimney; 20. Capacitive water level measurement assembly; 201. Measuring cylinder; 202. Fixing component; 203. Liquid phase port; 204. Connecting pipe; 205. Fixing sleeve; 206. Transparent glass tube; 207. Regulating valve; 208. Capacitive liquid level sensor; 30. Display component; 301. Mounting bracket; 302. Folding frame; 303. Mounting plate; 304. Display screen; 305. Alarm light; 40. Sprinkler assembly; 401. Water storage tank; 402. Sprinkler pump; 403. Sprinkler pipe. Detailed Implementation

[0014] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive. Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0015] Example 1 like Figures 1-5As shown, this utility model embodiment provides a gas boiler water level monitoring and alarm device, including a boiler body 10. A capacitive water level measuring component 20 is connected to one side of the bottom of the boiler body 10. The capacitive water level measuring component 20 includes a measuring cylinder 201, a fixing member 202, a liquid phase port 203, and a capacitive liquid level sensor 208. One side of the middle part of the measuring cylinder 201 is connected to the bottom of the boiler body 10 through the fixing member 202. The bottom of the measuring cylinder 201 is connected to the bottom of the boiler body 10. The bottom of the capacitive liquid level sensor 208 is inserted into the interior of the measuring cylinder 201 and is threaded to the top of the measuring cylinder 201. A display component 30 is installed on the outside of the boiler body 10, and a spray component 40 is installed on the outside of the boiler body 10.

[0016] In this embodiment, specifically: the boiler body 10 includes a boiler shell 101, an observation window 102, and a chimney 103. The chimney 103 is installed on the top of the boiler shell 101. The observation window 102 is located on the outer wall of the boiler shell 101. Water level scale lines are set on the inner wall of the boiler shell 101 corresponding to different water level heights. The approximate water level can be observed directly through the observation window 102.

[0017] In this embodiment, specifically: the capacitive water level measuring assembly 20 includes a connecting pipe 204, a fixing sleeve 205, a transparent glass tube 206, and a regulating valve 207. The measuring cylinder 201, on the side away from the fixing member 202, is symmetrically connected to the connecting pipe 204. A regulating valve 207 is installed on each connecting pipe 204. A fixing sleeve 205 is installed at one end of each connecting pipe 204. A transparent glass tube 206 is installed between two sets of fixing sleeves 205. The bottom of the capacitive liquid level sensor 208 is inserted into the interior of the measuring cylinder 201. The top of the measuring cylinder 201 is connected by a thread. The capacitive liquid level sensor 208 includes a signal processing module, an insulating shell, and an inner electrode disposed inside the insulating shell. An outer electrode is disposed outside the insulating shell. The inner electrode and the outer electrode are respectively connected to the signal processing module through wires. When the water level in the measuring cylinder 201 changes, the capacitance between the inner electrode and the outer electrode changes. The signal processing module converts the capacitance change signal into a water level electrical signal and transmits it to the control module. The transparent glass tube 206 can directly observe the water level change in the measuring cylinder 201.

[0018] In this embodiment, specifically: the display component 30 includes a fixed base 301, a folding frame 302, a mounting plate 303, a display screen 304, and an alarm light 305. The fixed base 301 is threadedly connected to the outer wall of the boiler body 10. The folding frame 302 is threadedly connected to the outer surface of the fixed base 301. One end of the folding frame 302 is threadedly connected to the display screen 304 through the mounting plate 303. The alarm light 305 is installed on the top of the display screen 304. A control module is installed inside the display screen 304. The control module uses an STM32 series microcontroller, which features fast processing speed, low power consumption, and rich interfaces, and can quickly process capacitive water level. The system measures the signals transmitted by the measurement components and controls the operation of the spray and display components in a timely manner. The display screen 304, alarm light 305, and capacitive water level measurement component 20 are all electrically connected to the control module. The display screen 304 is used to display the current water level value, upper water level threshold, and lower water level threshold in the boiler in real time. The alarm light 305 includes a red alarm light and a yellow warning light. When the water level is higher than the upper threshold, the control module controls the red alarm light to light up and a buzzer alarm to sound. When the water level is lower than the lower threshold, the control module controls the red alarm light to light up, the buzzer alarm to sound, and the spray components to start. When the water level is between the upper and lower thresholds but close to the threshold, the control module controls the yellow warning light to light up.

[0019] In this embodiment, specifically: the spray assembly 40 includes a water storage tank 401, a spray pump 402, and a spray pipe 403. The water storage tank 401 is located on the outside of the boiler body 10 and is connected to the water inlet of the boiler body 10 through a pipe, and a water supply valve is provided on the pipe. The spray pump 402 is located on the connecting pipe between the water storage tank 401 and the spray pipe 403. One end of the spray pipe 403 is connected to the water outlet of the spray pump 402, and the other end of the spray pipe 403 extends to the top of the inside of the boiler body 10.

[0020] In this embodiment, specifically: the control terminal of the spray pump 402 is electrically connected to the control output terminal of the control module; when the control module receives a low water level signal, it controls the spray pump 402 to start, spraying water into the boiler through the spray head, and at the same time controls the water supply valve to open, replenishing water into the boiler from the water storage tank 401.

[0021] Example 2 The difference from Embodiment 1 is that: a gas-fired boiler water level monitoring and alarm device includes a spray pipe, the other end of which extends to the top of the boiler shell. Spray heads are evenly distributed at the end of the spray pipe located inside the boiler shell. The control terminal of the spray pump is electrically connected to the control output terminal of the control module. When the control module receives a low water level signal, it controls the spray pump to start, spraying water into the boiler through the spray heads. At the same time, it controls the water supply valve to open, replenishing water into the boiler from the water storage tank. The spray heads are atomizing spray heads, which can atomize water and spray it into the boiler, avoiding direct impact of water flow on the boiler heating surface during water replenishment, preventing damage to the heating surface due to sudden temperature changes, and also making the water replenishment more evenly distributed in the boiler. The water storage tank is equipped with a water level sensor. The signal output terminal of the water level sensor is electrically connected to the signal input terminal of the control module. When the water level in the water storage tank is too low, the control module controls the display screen to show a water shortage warning and controls the yellow warning light to flash, reminding the staff to add water to the water storage tank in time. Capacitive water level measurement component: includes a capacitive sensor and a signal processing module. The capacitive sensor is vertically installed inside the boiler shell, with its detection end extending to the bottom of the boiler shell. The signal output end of the capacitive sensor is electrically connected to the signal input end of the signal processing module. When the water level inside the boiler changes, the capacitance between the inner and outer electrodes changes. The signal processing module converts the capacitance change signal into a water level electrical signal and transmits it to the user equipment. The insulating shell of the capacitive sensor is made of high-temperature and corrosion-resistant polytetrafluoroethylene material to ensure long-term stable operation of the sensor in the high-temperature and corrosive environment inside the boiler.

[0022] The connection between the capacitive sensor and the gas boiler, and their working principle, are clear to those skilled in the art and will not be described in detail here.

[0023] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A water level monitoring and alarm device for a gas-fired boiler, comprising a boiler body (10), characterized in that: A capacitive water level measuring component (20) is connected to one side of the bottom of the boiler body (10). The capacitive water level measuring component (20) includes a measuring cylinder (201), a fixing member (202), a liquid phase port (203), and a capacitive liquid level sensor (208). The middle side of the measuring cylinder (201) is connected to the bottom of the boiler body (10) through the fixing member (202). The bottom of the measuring cylinder (201) is connected to the bottom of the boiler body (10). The bottom of the capacitive liquid level sensor (208) is inserted into the interior of the measuring cylinder (201) and connected to the top of the measuring cylinder (201) by a thread. A display component (30) is installed on the outside of the boiler body (10), and a spray component (40) is installed on the outside of the boiler body (10).

2. The gas-fired boiler water level monitoring and alarm device according to claim 1, characterized in that: The boiler body (10) includes a boiler shell (101), an observation window (102) and a chimney (103). The chimney (103) is installed on the top of the boiler shell (101), and the observation window (102) is located on the outer side wall of the boiler shell (101).

3. The gas-fired boiler water level monitoring and alarm device according to claim 1, characterized in that: The capacitive water level measuring assembly (20) includes a connecting pipe (204), a fixing sleeve (205), a transparent glass tube (206), and a regulating valve (207). The measuring cylinder (201) is symmetrically connected to the side away from the fixing member (202) by the connecting pipe (204). A regulating valve (207) is installed on each of the connecting pipes (204). A fixing sleeve (205) is installed at one end of each connecting pipe (204). A transparent glass tube (206) is installed between the two sets of fixing sleeves (205).

4. The gas-fired boiler water level monitoring and alarm device according to claim 1, characterized in that: The display assembly (30) includes a fixed base (301), a folding frame (302), a mounting plate (303), a display screen (304), and an alarm light (305). The fixed base (301) is threaded to the outer wall of the boiler body (10). The outer surface of the fixed base (301) is threaded with the folding frame (302). One end of the folding frame (302) is threaded with the display screen (304) through the mounting plate (303). An alarm light (305) is installed on the top of the display screen (304).

5. The gas-fired boiler water level monitoring and alarm device according to claim 1, characterized in that: The spray assembly (40) includes a water storage tank (401), a spray pump (402), and a spray pipe (403). The water storage tank (401) is located outside the boiler body (10). The water storage tank (401) is connected to the water inlet of the boiler body (10) through a pipe, and a water supply valve is provided on the pipe. The spray pump (402) is located on the connecting pipe between the water storage tank (401) and the spray pipe (403). One end of the spray pipe (403) is connected to the water outlet of the spray pump (402), and the other end of the spray pipe (403) extends to the top of the inside of the boiler body (10).

6. The gas-fired boiler water level monitoring and alarm device according to claim 4, characterized in that: The display screen (304) is equipped with a control module. The control module uses an STM32 series microcontroller. The display screen (304), alarm light (305) and capacitive water level measuring component (20) are all electrically connected to the control module.

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