A steam boiler anti-dry-burning protection device

Abstract

This utility model discloses a steam boiler anti-dry-burning protection device, including a boiler shell. A detection shell is installed on one side of the boiler shell, and a detection chamber for water inflow is formed inside the detection shell. The bottom surface of the detection chamber is flush with the lowest point of the inner cavity of the boiler shell. Multiple detection holes are provided on the top surface of the detection shell, each containing a water level sensor. A positioning ring is installed on the outer shell of the water level sensor, and the positioning ring abuts against the outer surface of the detection shell. A pressure plate is provided on the outside of the detection shell to press the multiple water level sensors together. This utility model has a simple structure. The detection shell allows water from the lowest point to be guided into the detection chamber, ensuring that the water level sensors above the detection shell are vertically aligned with the downward-facing water, enabling continuous water level detection. Furthermore, the water level sensors are easy to install and remove, and can be quickly replaced.

Description

Technical Field

[0001] This utility model relates to the field of steam boiler technology, specifically to a steam boiler anti-dry-burning protection device. Background Technology

[0002] A steam boiler is a device that heats water and converts it into steam. It is widely used in power generation, industrial production, heating, and other fields. Its core function is to heat water by burning fuels (such as coal, natural gas, oil, etc.) or using other heat sources (such as electricity, nuclear energy) to produce high-temperature, high-pressure steam.

[0003] Currently, to prevent steam boilers from dry burning, water level sensors are installed inside the boiler shell. However, due to the circular cross-section of the boiler shell and the presence of numerous pipes in the middle, the water level sensor cannot be installed at the top or aligned with the lowest point of the boiler shell cavity. This makes it impossible to accurately detect the water level at all times. Furthermore, the current water level sensor has a complex installation structure, making it difficult to replace quickly. Damage to the sensor will affect the detection results. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a steam boiler anti-dry burning protection device, which allows water at the lowest point to flow into the detection chamber through the detection shell, and the water level sensor above the detection shell can detect the water level height at all times, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a steam boiler anti-dry burning protection device, including a boiler shell, a detection shell installed on one side of the boiler shell, a detection chamber for water supply is formed inside the detection shell, the bottom surface of the detection chamber is flush with the lowest point of the inner cavity of the boiler shell, multiple detection holes are provided on the top surface of the detection shell, each detection hole is equipped with a water level sensor, a positioning ring is installed on the outer shell of the water level sensor, the positioning ring is in contact with the outer surface of the detection shell, and a pressure plate is provided on the outside of the detection shell to press the multiple water level sensors together.

[0006] As a preferred technical solution, the pressure plate is arranged in an "L" shape. One end of the pressure plate is provided with multiple U-shaped grooves, which are all fitted around the outside of the water level sensor. The inner side of the pressure plate is in contact with the positioning ring. The vertical end of the pressure plate is provided with multiple positioning grooves. Positioning strips are installed on the outer wall of the detection shell opposite to the positioning grooves, and the positioning strips are all slidably set in the positioning grooves.

[0007] As a preferred technical solution, the pressure plate is provided with a lead screw hole, and a sealed bearing is embedded in the top surface of the detection shell directly opposite the lead screw hole. A lead screw is threaded into the lead screw hole, one end of the lead screw is installed in the inner ring of the sealed bearing, and a handwheel is installed at the other end of the lead screw.

[0008] As a preferred technical solution, a rubber ring is installed on the inner wall of the detection hole, and the inner surface of the rubber ring is set to abut against the outer shell of the water level sensor.

[0009] As a preferred technical solution, both the positioning groove and the positioning strip have trapezoidal cross-sections.

[0010] As a preferred technical solution, the bottom and top surfaces of the detection cavity are arranged in parallel.

[0011] As a preferred technical solution, the water level sensor is an ultrasonic water level sensor.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure, and the detection shell can guide the water at the lowest point into the detection chamber, so that the water level sensor above the detection shell can be vertically facing the water below, and can detect the water level height at all times. In addition, multiple water level sensors are set, which increases the detection accuracy. Furthermore, the water level sensors are easy to install and remove, and can be quickly replaced. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after the pressure plate is removed;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after removing any water level sensor;

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] The components include: 1. Boiler shell; 2. Detection shell; 3. Water level sensor; 4. Pressure plate; 5. Positioning strip; 6. Lead screw; 7. Handwheel; 8. Positioning ring; 9. Detection hole; 10. Detection cavity. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a steam boiler anti-dry-burning protection device, which includes a boiler shell 1. A detection shell 2 is installed on one side of the boiler shell 1. The detection shell 2 forms a detection chamber 10 for water supply. The bottom surface of the detection chamber 10 is flush with the lowest point of the inner cavity of the boiler shell 1. The top surface of the detection shell 2 is provided with multiple detection holes 9. Each detection hole 9 is provided with a water level sensor 3. A positioning ring 8 is installed on the outer shell of the water level sensor 3. The positioning ring 8 is in contact with the outer surface of the detection shell 2. A pressure plate 4 is provided on the outside of the detection shell 2 to press the multiple water level sensors 3 together.

[0023] In this embodiment, the pressure plate 4 is arranged in an "L" shape. One end of the pressure plate 4 is provided with multiple U-shaped grooves. The U-shaped grooves are all sleeved on the outside of the water level sensor 3. The inner side of the pressure plate 4 is in contact with the positioning ring 8. The vertical end of the pressure plate 4 is provided with multiple positioning grooves. Positioning strips 5 are installed on the outer wall surface of the detection shell 2 opposite to the positioning grooves. The positioning strips 5 are all slidably arranged in the positioning grooves.

[0024] In this embodiment, the pressure plate 4 is provided with a lead screw hole, and a sealed bearing is embedded in the top surface of the detection shell 2 directly opposite the lead screw hole. A lead screw 6 is threaded into the lead screw hole, one end of the lead screw 6 is installed in the inner ring of the sealed bearing, and a handwheel 7 is installed at the other end of the lead screw 6.

[0025] In this embodiment, a rubber ring is installed on the inner wall of the detection hole 9, and the inner ring surface of the rubber ring is set to abut against the outer shell of the water level sensor 3; the rubber ring increases the sealing between the water level sensor and the detection hole. A sealing ring can also be installed on the bottom surface of the positioning ring to increase the sealing between the positioning ring and the detection shell.

[0026] In this embodiment, both the positioning groove and the positioning strip 5 have trapezoidal cross-sections, so that the pressure plate can only move up and down along the positioning strip.

[0027] In this embodiment, the bottom and top surfaces of the detection cavity 10 are arranged in parallel, so that the water level sensor can be vertically oriented towards the water level below, ensuring the accuracy of the detection. Furthermore, there are no obstructions in the middle, avoiding any impact on the detection effect due to obstruction.

[0028] In this embodiment, the water level sensor 3 is an ultrasonic water level sensor. By emitting ultrasonic waves and receiving reflected signals, the distance between the liquid surface and the sensor is calculated, so that the rise and fall of the water level can be detected at all times.

[0029] The detection shell allows water from the lowest point to be introduced into the detection chamber. Since the bottom and top surfaces of the detection chamber 10 are set parallel to each other, the water level sensor above the detection shell can be vertically directed towards the water below. The ultrasonic water level sensor can transmit the detected data to the terminal in the working area at all times, so that the water level can be known at all times. The detection chamber also avoids detection obstruction.

[0030] Multiple water level sensors are installed to avoid affecting the detection effect due to the failure of one water level sensor;

[0031] When the water level sensor is damaged or needs repair, the screw can be rotated by handwheel. The rotation of the screw drives the pressure plate, causing the pressure plate to rise along the positioning strip. After the pressure plate moves away from the positioning ring, the water level sensor can be directly removed from the detection hole, which greatly facilitates its disassembly. A new water level sensor can be inserted into the detection hole, and the pressure plate can press the water level sensor firmly onto the detection housing for installation and fixation.

[0032] 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 changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A dry firing protection device for a steam boiler, characterized in that: The system includes a boiler shell (1), a detection shell (2) is installed on one side of the boiler shell (1), and a detection chamber (10) for water supply is formed inside the detection shell (2). The bottom surface of the detection chamber (10) is flush with the lowest point of the inner cavity of the boiler shell (1). Multiple detection holes (9) are provided on the top surface of the detection shell (2). A water level sensor (3) is provided in each detection hole (9). A positioning ring (8) is installed on the outer shell of the water level sensor (3). The positioning ring (8) is in contact with the outer surface of the detection shell (2). A pressure plate (4) is provided on the outside of the detection shell (2) to press the multiple water level sensors (3).

2. The dry firing protection device for steam boilers according to claim 1, characterized in that: The pressure plate (4) is set in an "L" shape. One end of the pressure plate (4) is provided with multiple U-shaped grooves. The U-shaped grooves are all fitted around the outside of the water level sensor (3). The inner side of the pressure plate (4) is in contact with the positioning ring (8). The vertical end of the pressure plate (4) is provided with multiple positioning grooves. Positioning strips (5) are installed on the outer wall of the detection shell (2) opposite to the positioning grooves. The positioning strips (5) are all slidably set in the positioning grooves.

3. The dry firing protection device for steam boilers according to claim 1, characterized in that: The pressure plate (4) is provided with a lead screw hole. A sealed bearing is embedded in the top surface of the detection shell (2) directly opposite the lead screw hole. A lead screw (6) is threaded into the lead screw hole. One end of the lead screw (6) is installed in the inner ring of the sealed bearing, and a handwheel (7) is installed at the other end of the lead screw (6).

4. The dry firing protection device for steam boilers according to claim 1, characterized in that: A rubber ring is installed on the inner wall of the detection hole (9), and the inner ring of the rubber ring is set to abut against the outer shell of the water level sensor (3).

5. The dry firing protection device for steam boilers according to claim 2, characterized in that: The cross-sections of the positioning groove and the positioning strip (5) are both set in a trapezoidal structure.

6. The dry firing protection device for steam boilers according to claim 1, characterized in that: The bottom and top surfaces of the detection cavity (10) are set in parallel.

7. The dry firing protection device for steam boilers according to claim 1, characterized in that: The water level sensor (3) is an ultrasonic water level sensor.

Images