Double alarm device for low water level of boiler

Abstract

The utility model discloses a boiler low water level dual alarm device which comprises a U-shaped pipe and boiler equipment, one end of the U-shaped pipe is located on the inner side of the boiler equipment, the other end of the U-shaped pipe is located on the outer side of the boiler equipment, and a first water outlet end and a second water outlet end are vertically and fixedly communicated with the side wall, located in the boiler equipment, of the U-shaped pipe. A device plate is arranged at the end, located on the outer side of the boiler equipment, of the U-shaped pipe, a fixing base is fixedly connected to the side wall of the device plate, the fixing base is fixedly connected to the side wall of the boiler equipment, and the end, located outside the boiler equipment, of the U-shaped pipe is sleeved with a double-trigger device. A warning device is arranged in the device plate at the corresponding position in a penetrating mode. The utility model has the advantages of double scales for indicating the change of internal water level, low manufacturing cost and convenience in use.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a boiler low water level double alarm device. Background Art

[0002] A boiler is a device that uses fuel combustion to generate heat energy, heats water or other working fluids and converts them into steam or hot water. Boilers are widely used in industrial production, heating, power generation and other fields. Boilers are mainly composed of furnaces, combustion equipment, furnace shells, water-cooled walls, superheaters, steam separators, air preheaters, induced draft fans, slag removal equipment, etc. The heat energy generated by fuel combustion is transferred to water through the furnace wall, so that the water is heated and converted into steam or hot water. Steam can be used to drive steam turbine generators to generate electricity, drive industrial production equipment, or for heating, providing hot water, etc. Hot water can be used for heating, providing hot water, etc. According to their uses, they are divided into industrial boilers and civil boilers. The former is mainly used in industrial production, and the latter is mainly used for heating and domestic hot water.

[0003] In the prior art, when the boiler equipment is in use, it is necessary to monitor the internal water level of the boiler equipment in a timely manner to avoid dry burning caused by the internal water level being too low. If the relevant monitoring instruments are placed directly inside the boiler, there are certain requirements for the high temperature resistance of the instruments, and it is not easy to display intuitively. Based on this problem, we propose a boiler low water level double alarm device. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler low water level double alarm device to solve the problems existing in the prior art proposed by the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A boiler low water level double alarm device comprises a U-shaped tube and a boiler device, wherein one end of the U-shaped tube is located inside the boiler device, and the other end of the U-shaped tube is located outside the boiler device, and a first water outlet end and a second water outlet end are fixedly connected up and down on the side wall of the U-shaped tube located inside the boiler device, and a device plate is provided at the end of the U-shaped tube located outside the boiler device, and a fixing seat is fixedly connected to the side wall of the device plate, and the fixing seat is fixedly connected to the side wall of the boiler device, and a double trigger device is sleeved on the end of the U-shaped tube located outside the boiler device, and a warning device is penetrated through the device plate at the corresponding position.

[0007] Preferably, the U-shaped tube passes through the outer shell of the corresponding boiler equipment.

[0008] Preferably, the double trigger device includes an outer rod arranged at one end of the U-shaped tube located outside the boiler equipment, and an inner rod is slidably connected to the outer rod. The lower ends of the outer rod and the inner rod are respectively fixedly connected with a first float and a second float, and the first float and the second float are both located in the U-shaped tube.

[0009] Preferably, the warning device includes a slide groove penetrating through the device plate, the outer rod is slidably connected in the slide groove, two side grooves are penetrated through the inner wall of the slide groove, the inner walls of the two side grooves are fixedly connected with slide rods, the lower ends of the two slide rods are fixedly connected with control switches, the outer ends of the device plate at corresponding positions are provided with a first display light and a second display light, and the two control switches correspond to the first display light and the second display light respectively.

[0010] Preferably, a first trigger plate is fixedly connected to the side wall of the outer rod located in the slide groove, and the first trigger plate slides on the slide rod in one of the slide grooves, a second trigger plate is fixedly connected to the side wall of the inner rod and is slidably connected to the side wall of the slide rod in another slide groove, and a vertical groove for moving the second trigger plate is penetrated through the side wall of the outer rod at a corresponding position, the position of the first trigger plate is higher than the position of the second trigger plate, and the first trigger plate and the second trigger plate correspond to the first display light and the second display light respectively.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, according to the communicating vessel principle, after the liquid level in the U-shaped tube in the boiler equipment is lowered, the liquid level at the other end thereof is lowered synchronously, and the corresponding outer rod and inner rod are brought down synchronously. When the water level is stabilized at the first water outlet end, the corresponding first trigger plate is moved to the corresponding control switch and triggers the first display light to light up, prompting the water level in the boiler equipment. When the water level continues to decrease and reaches the second water outlet end, the inner rod will continue to fall with the liquid level, and the corresponding second trigger plate will be brought to touch the corresponding control switch to light up the second display light, prompting the staff that the boiler water level has at least reached the lowest warning point. The prompting effect is simple and intuitive, the equipment cost is low, and there is no need to place the monitoring instrument in the boiler equipment, thereby reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a boiler low water level double alarm device proposed by the utility model;

[0014] Figure 2 This is a front schematic diagram of a device board of a boiler low water level dual alarm device proposed by the utility model;

[0015] Figure 3The utility model discloses a cross-sectional view of a device plate of a dual alarm device for low water level of a boiler.

[0016] In the figure: 1 U-shaped tube, 2 first water outlet end, 3 second water outlet end, 4 fixing seat, 5 device plate, 6 inner rod, 7 outer rod, 8 first display light, 9 second display light, 10 first float, 11 second float, 12 sliding rod, 13 first trigger plate, 14 control switch, 15 second trigger plate. DETAILED DESCRIPTION

[0017] 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.

[0018] Reference Figure 1-3 A boiler low water level double alarm device comprises a U-shaped tube 1 and a boiler device, wherein one end of the U-shaped tube 1 is located inside the boiler device, the U-shaped tube 1 penetrates the outer shell of the corresponding boiler device, the other end of the U-shaped tube 1 is located outside the boiler device, a first water outlet end 2 and a second water outlet end 3 are fixedly connected up and down at the side wall of the U-shaped tube 1 located inside the boiler device, a device plate 5 is provided at one end of the U-shaped tube 1 located outside the boiler device, a fixing seat 4 is fixedly connected to the side wall of the device plate 5, and the fixing seat 4 is fixedly connected to the side wall of the boiler device, and a double trigger device is sleeved at one end of the U-shaped tube 1 located outside the boiler device.

[0019] Among them, the double trigger device includes an outer rod 7 arranged at one end of the U-shaped tube 1 located outside the boiler equipment, and the inner rod 6 is slidably connected inside the outer rod 7. The lower ends of the outer rod 7 and the inner rod 6 are respectively fixedly connected with a first float 10 and a second float 11. The first float 10 and the second float 11 are both located inside the U-shaped tube 1.

[0020] Among them, a warning device is arranged through the device plate 5 at the corresponding position, and the warning device includes a slide groove arranged through the device plate 5, an outer rod 7 is slidably connected in the slide groove, and two side grooves are arranged through the inner wall of the slide groove, and slide rods 12 are fixedly connected to the inner walls of the two side grooves, and control switches 14 are fixedly connected to the lower ends of the two slide rods 12, and a first display light 8 and a second display light 9 are arranged at the outer end of the device plate 5 at the corresponding position, and the two control switches 14 correspond to the first display light 8 and the second display light 9 respectively.

[0021] Specifically, a first trigger plate 13 is fixedly connected to the side wall of the outer rod 7 located in the slide groove, and the first trigger plate 13 slides on the slide rod 12 in one of the slide grooves. A second trigger plate 15 is fixedly connected to the side wall of the inner rod 6 and is slidably connected to the side wall of the slide rod 12 in another slide groove. A vertical groove for the movement of the second trigger plate 15 is penetrated through the side wall of the outer rod 7 at the corresponding position. The position of the first trigger plate 13 is higher than that of the second trigger plate 15. The first trigger plate 13 and the second trigger plate 15 correspond to the first display light 8 and the second display light 9, respectively.

[0022] In the utility model, the first water outlet end 2 and the second water outlet end 3 of the U-shaped tube 1 located on the inner side of the boiler equipment are used to discharge internal water. When the water level drops below the first water outlet end 2, the water level in the U-shaped tube 1 will drop to the first water outlet end 2. At this time, the outer rod 7 and the inner rod 6 on the other side of the U-shaped tube 1 will move synchronously, and the corresponding first float 10 and the second float 11 will allow them to move with the liquid level. The outer rod 7 falls and brings the corresponding first trigger plate 13 up and down on the slide bar 12 and finally triggers the corresponding control switch 14, so that the first display light 8 lights up to alert nearby staff.

[0023] When the liquid level inside the boiler equipment continues to drop, when the water level drops to below the second water outlet end 3, the water in the U-shaped tube 1 will be discharged through the second water outlet end 3 and the liquid level will move to that point. At this time, the liquid level on the other side will also drop synchronously. At this time, the outer rod 7 will not continue to fall with the first float 10 because the first trigger plate 13 has touched the bottom, and the inner rod 6 will continue to move downward with the second float 11 along with the liquid level until the corresponding second trigger plate 15 touches the corresponding control switch 14 and the second display light 9 lights up, prompting nearby staff that the liquid level of the boiler equipment has at least dropped to the lowest level.

[0024] 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 boiler low water level dual alarm device, comprising a U-shaped tube (1) and a boiler device, characterized in that: One end of the U-shaped tube (1) is located inside the boiler equipment, and the other end of the U-shaped tube (1) is located outside the boiler equipment. A first water outlet end (2) and a second water outlet end (3) are fixedly connected to each other at the upper and lower sides of the side wall of the U-shaped tube (1) located inside the boiler equipment. A device plate (5) is provided at one end of the U-shaped tube (1) located outside the boiler equipment. A fixing seat (4) is fixedly connected to the side wall of the device plate (5). The fixing seat (4) is fixedly connected to the side wall of the boiler equipment. A double trigger device is sleeved at one end of the U-shaped tube (1) located outside the boiler equipment. A warning device is provided through the device plate (5) at a corresponding position.

2. A boiler low water level dual alarm device according to claim 1, characterized in that: The U-shaped tube (1) passes through the outer shell of the corresponding boiler equipment.

3. A boiler low water level dual alarm device according to claim 1, characterized in that: The double trigger device comprises an outer rod (7) arranged at one end of the U-shaped tube (1) located outside the boiler equipment, an inner rod (6) is slidably connected inside the outer rod (7), a first float (10) and a second float (11) are fixedly connected at the lower ends of the outer rod (7) and the inner rod (6), respectively, and the first float (10) and the second float (11) are both located inside the U-shaped tube (1).

4. A boiler low water level dual alarm device according to claim 3, characterized in that: The warning device comprises a slide groove penetrating through the device plate (5), the outer rod (7) is slidably connected in the slide groove, two side grooves are penetrating through the inner wall of the slide groove, the inner walls of the two side grooves are fixedly connected with a slide rod (12), the lower ends of the two slide rods (12) are fixedly connected with a control switch (14), the outer ends of the device plate (5) at corresponding positions are provided with a first display light (8) and a second display light (9), and the two control switches (14) correspond to the first display light (8) and the second display light (9), respectively.

5. A boiler low water level dual alarm device according to claim 4, characterized in that: A first trigger plate (13) is fixedly connected to the side wall of the outer rod (7) located in the slide groove, and the first trigger plate (13) slides on the slide rod (12) in one of the slide grooves. A second trigger plate (15) is fixedly connected to the side wall of the inner rod (6) and is slidably connected to the side wall of the slide rod (12) in the other slide groove. A vertical groove for the movement of the second trigger plate (15) is penetrated through the side wall of the outer rod (7) at a corresponding position. The position of the first trigger plate (13) is higher than that of the second trigger plate (15). The first trigger plate (13) and the second trigger plate (15) correspond to the first display light (8) and the second display light (9) respectively.

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