Boiler fire observation door

Abstract

The utility model provides a boiler fire observation door, and belongs to the technical field of boilers. The boiler fire observation door solves the problems that an existing boiler fire observation door is complex in structure and inconvenient to use. According to the boiler fire observation door, a shell is provided with an observation end and a mounting end, the observation end of the shell is provided with a flange connecting disc, a flange pressing disc is arranged on the opposite side of the flange connecting disc, a high-temperature-resistant glass plate is arranged between the flange connecting disc and the flange pressing disc, a rotating shaft is arranged in the shell, and the left end of the rotating shaft is inserted into a positioning groove; the right end of the rotating shaft penetrates through the mounting hole and the mounting sleeve and then extends out of the mounting sleeve, a handle is arranged at the right end of the rotating shaft, the bottom end of the mounting sleeve is filled with filler, a filler cover arranged on the rotating shaft in a sleeving mode is arranged in the mounting sleeve, and an isolation door plate with one end arranged on the rotating shaft in a sleeving mode and fixedly connected with the rotating shaft is arranged in the shell. The fire observation door is simple in structural design and convenient to operate, and meanwhile heat in the boiler can be prevented from leaking from the fire observation door.

Description

Technical Field

[0001] This utility model belongs to the field of boiler technology, specifically a boiler fire observation door. Background Technology

[0002] In a megawatt-scale thermal power plant, electricity is usually generated by megawatt-scale units. The main working principle of a boiler is to use the heat energy released after fuel combustion or the waste heat from industrial production to transfer to the water in the container, so that the water reaches the required temperature or a certain pressure of steam. The function of the boiler's fire door is to observe the color, shape, and length of the flame burning in the combustion chamber.

[0003] Currently, the China Patent Network discloses a vertical square furnace door for boiler assembly [Application Publication No.: CN107420940A]: It includes a rectangular door body, a rectangular pad on the rectangular door body, a first rectangular movable door on the rectangular pad, a second rectangular movable door on the first rectangular movable door, a door positioning hole on the rectangular door body, a first connecting sleeve and a second connecting sleeve symmetrically arranged on one side of the rectangular door body, a first connecting plate connected at both ends to the first connecting sleeve and the first rectangular movable door, a second connecting plate connected at both ends to the second connecting sleeve and the first rectangular movable door, a first connecting screw sequentially passing through the first connecting sleeve, the second connecting sleeve, the first connecting plate, and the second connecting plate, adjusting nuts respectively located at both ends of the first connecting screw, and a third connecting sleeve symmetrically arranged on the second rectangular movable door. One end of the second connecting plate is connected to the third connecting sleeve via the second connecting screw. The system includes a rod connection, a first adjustment control plate and a second adjustment control plate respectively installed on the first rectangular movable door and the second rectangular movable door, a first positioning plate and a second positioning plate respectively installed on the first adjustment control plate and the second adjustment control plate, a first positioning card and a second positioning card respectively installed on the rectangular door body and the first rectangular movable door and used in conjunction with the first positioning plate and the second positioning plate, and a first ceramic liner, a second ceramic liner, a third ceramic liner, and a fourth ceramic liner respectively having the same structure as the rectangular door body, the rectangular pad, the first rectangular movable door, and the second rectangular movable door and used in conjunction with them, and ceramic plate positioning holes respectively installed on the first ceramic liner; the first ceramic liner is connected to the rectangular door body through the door positioning hole and the ceramic plate positioning hole, and the rectangular pad, the first rectangular movable door, the second rectangular movable door and the second ceramic liner, the third ceramic liner, and the fourth ceramic liner are respectively connected by adhesive or welding.

[0004] The aforementioned furnace door viewing door has the following drawbacks: it consists of a large number of components, resulting in complex structure, inconvenient assembly, and high manufacturing costs; furthermore, it is inconvenient to operate during use. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a boiler inspection door. The technical problem to be solved by this utility model is: how to solve the problems of complex structure and inconvenient use of existing boiler inspection doors.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A boiler observation door includes a housing with an observation end and a mounting end. The observation end of the housing has a flange connecting plate, and a flange clamping plate is disposed on the opposite side of the flange connecting plate. A high-temperature resistant glass plate is disposed between the flange connecting plate and the flange clamping plate. The flange connecting plate and the flange clamping plate are connected and clamp the high-temperature resistant glass plate by fasteners. The housing has a left side plate and a right side plate. The inner wall of the right side plate is recessed to the right to form a positioning groove. The left side plate has a mounting hole, and the outer side wall of the left side plate has a mounting sleeve protruding to the left at the position corresponding to the mounting hole. The mounting sleeve and mounting hole are coaxially arranged, and the inner diameter of the mounting sleeve is larger than the inner diameter of the mounting hole. A rotating shaft is provided inside the housing. The left end of the rotating shaft is inserted into the positioning groove, and the right end of the rotating shaft passes through the mounting hole and the mounting sleeve and extends outside the mounting sleeve. A handle is provided on the right end of the rotating shaft. The bottom end of the mounting sleeve is filled with filler. A filler cap is provided inside the mounting sleeve and fitted on the rotating shaft. The filler cap is pressed tightly on the filler. An isolation door plate is provided inside the housing, with one end fitted on the rotating shaft and fixedly connected to the rotating shaft. When the other end of the isolation door plate is in contact with the inner wall of the housing, the isolation door plate is tilted.

[0008] This boiler observation door is installed on the boiler. Under normal conditions, one end of the isolation door plate is against the inner wall of the shell, and the boiler observation door is in the closed state. When it is necessary to observe the combustion situation inside the boiler, the handle is turned to rotate the shaft, which in turn drives the isolation door plate to rotate, opening the isolation door plate. This allows the engineer to directly observe the combustion situation inside the boiler through the high-temperature resistant glass plate. Because there is a gap in the assembly between the shaft and the mounting hole, this structure uses packing and a packing cover to seal the gap to prevent the high temperature inside the boiler from leaking out. The positioning groove is located on the inner wall of the right side plate, where there is no leakage. Therefore, the observation door structure of this design is simple, easy to operate, and at the same time prevents heat from leaking out of the boiler through the observation door.

[0009] In the aforementioned boiler inspection door, the inspection door further includes a clamping nut. One end of the clamping nut is disposed within an installation sleeve and threadedly connected to the inner wall of the installation sleeve. The clamping nut also abuts against the packing cover. The clamping nut has a shaft hole through which a rotating shaft passes, with a gap between the outer circumferential surface of the rotating shaft and the inner wall of the shaft hole. This structure uses the clamping nut to press the packing cover firmly onto the packing, further improving the sealing effect and preventing heat leakage.

[0010] In the aforementioned boiler observation door, one end of the isolation door panel has a connecting hole one, and the rotating shaft passes through the connecting hole one. A connecting hole two is radially formed on the outer wall of one end of the isolation door panel, communicating with the connecting hole one. A locking screw is screwed into the connecting hole two, and one end of the locking screw abuts against the rotating shaft. After the locking screw is tightened against the rotating shaft, the isolation door panel is fixed on the rotating shaft, facilitating the rotation of the isolation door panel by the rotating shaft.

[0011] In the aforementioned boiler observation door, the mounting end has a mounting opening. When one end of the isolation door panel is abutted against the inner wall of the housing, the second connecting hole faces the mounting opening in a horizontal direction. This structure facilitates tightening or loosening of the locking screws, thereby aiding in the assembly of the isolation door panel within the housing.

[0012] In the aforementioned boiler observation door, the inner circumferential surface of the flange connecting plate has a first positioning step, and the inner circumferential surface of the flange clamping plate has a second positioning step. Both positioning steps one and two are fitted with sealing gaskets. One end of the high-temperature resistant glass plate is embedded in positioning step one and tightly abuts against the corresponding sealing gasket, while the other end of the high-temperature resistant glass plate is embedded in positioning step two and tightly abuts against the corresponding sealing gasket. The two sealing gaskets seal the installation position of the high-temperature resistant glass plate and simultaneously clamp and fix it, preventing breakage during assembly of the high-temperature resistant glass cup.

[0013] Compared with the prior art, the boiler inspection door of this utility model has the following advantages: This structure seals the gap by setting packing and packing cover, and the positioning groove is located on the inner wall of the right side plate, so there is no leakage here. Therefore, the inspection door structure of this structure is simple in design and easy to operate, while preventing the heat in the boiler from leaking out from the inspection door. Attached Figure Description

[0014] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model.

[0015] Figure 2 This is one of the cross-sectional structural schematic diagrams of this utility model.

[0016] Figure 3This is the second cross-sectional structural schematic diagram of this utility model.

[0017] Figure 4 This is the second three-dimensional structural schematic diagram of this utility model.

[0018] In the diagram, 1. Housing; 1a. Observation end; 1b. Mounting end; 100. Flange connecting plate; 101. Left side plate; 102. Right side plate; 103. Positioning groove; 104. Mounting hole; 105. Mounting sleeve; 106. Mounting port; 107. Positioning step one; 108. Positioning step two; 2. Flange clamping plate; 3. High-temperature resistant glass plate; 4. Rotating shaft; 5. Handle; 6. Packing; 7. Packing cover; 8. Isolation door plate; 80. Connection hole one; 81. Connection hole two; 9. Compression nut; 90. Shaft hole; 10. Sealing gasket. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figures 1-4 As shown, the boiler observation door includes a shell 1, which has an observation end 1a and a mounting end 1b. The observation end 1a of the shell 1 has a flange connecting plate 100, and a flange clamping plate 2 is provided on the opposite side of the flange connecting plate 100. A high-temperature resistant glass plate 3 is provided between the flange connecting plate 100 and the flange clamping plate 2. The flange connecting plate 100 and the flange clamping plate 2 are connected by fasteners and clamp the high-temperature resistant glass plate 3. The shell 1 has a left side plate 101 and a right side plate 102. The inner wall of the right side plate 102 is recessed to the right to form a positioning groove 103. The left side plate 101 has a mounting hole 104, and the outer side wall of the left side plate 101 has a mounting sleeve 105 protruding to the left at the position corresponding to the mounting hole 104. The mounting sleeve 105 is coaxially arranged with the mounting hole 104 and the inner diameter of the mounting sleeve 105 is larger than the inner diameter of the mounting hole 104. A rotating shaft 4 is provided inside the housing 1. The left end of the rotating shaft 4 is inserted into the positioning groove 103. The right end of the rotating shaft 4 passes through the mounting hole 104 and the mounting sleeve 105 and extends to the outside of the mounting sleeve 105. A handle 5 is provided on the right end of the rotating shaft 4. The bottom end of the mounting sleeve 105 is filled with filler 6. A filler cover 7 is provided inside the mounting sleeve 105 and is fitted on the rotating shaft 4. The filler cover 7 is pressed tightly on the filler 6. An isolation door plate 8 is provided inside the housing 1 with one end fitted on the rotating shaft 4 and fixedly connected to the rotating shaft 4. When the other end of the isolation door plate 8 is in contact with the inner wall of the housing 1, the isolation door plate 8 is tilted.

[0021] This boiler observation door is installed on the boiler. Under normal conditions, one end of the isolation door plate 8 is close to the inner wall of the shell 1, and the boiler observation door is in the closed state. When it is necessary to observe the combustion in the boiler, the handle 5 is used to turn the rotating shaft 4, which in turn drives the isolation door plate 8 to rotate, opening the isolation door plate 8. This allows the engineer to directly observe the combustion in the boiler through the high-temperature resistant glass plate 3. Since there is a gap in the assembly between the rotating shaft 4 and the mounting hole 104, in order to prevent the high temperature in the boiler from leaking out of the gap, this structure uses packing 6 and packing cover 7 to seal the gap. The positioning groove 103 is located on the inner wall of the right side plate 102, where there is no leakage. Therefore, the observation door structure of this structure is simple in design, easy to operate, and at the same time prevents the heat in the boiler from leaking out of the observation door.

[0022] like Figure 2 As shown, the boiler's observation door also includes a clamping nut 9. One end of the clamping nut 9 is located inside the mounting sleeve 105 and threadedly connected to the inner wall of the mounting sleeve 105. The other end of the clamping nut 9 abuts against the packing cover 7. The clamping nut 9 has a shaft hole 90 through which a rotating shaft 4 passes, with a gap between the outer circumferential surface of the rotating shaft 4 and the inner wall of the shaft hole 90. This structure uses the clamping nut 9 to press the packing cover 7 onto the packing 6, further improving the sealing effect and preventing heat leakage.

[0023] like Figure 3 and Figure 4 As shown, one end of the isolation door panel 8 has a connecting hole 80, and the rotating shaft 4 passes through the connecting hole 80. A connecting hole 81 is provided on the outer wall of one end of the isolation door panel 8 along the radial direction of the connecting hole 80. The connecting hole 81 is connected to the connecting hole 80. A locking screw is screwed into the connecting hole 81, and one end of the locking screw is pressed against the rotating shaft 4.

[0024] like Figure 3 As shown, the mounting end 1b has a mounting port 106. When one end of the isolation door panel 8 is in contact with the inner wall of the housing 1, the connecting hole 81 is oriented horizontally toward the mounting port 106. This structure facilitates tightening or loosening of the locking screws, thereby facilitating the assembly of the isolation door panel 8 within the housing 1.

[0025] like Figure 3As shown, the inner circumferential surface of the flange connecting plate 100 has a positioning step 107, and the inner circumferential surface of the flange clamping plate 2 has a positioning step 108. Both positioning steps 107 and 108 have sealing gaskets 10. One end of the high-temperature resistant glass plate 3 is embedded in the positioning step 107 and tightly abuts against the corresponding sealing gasket 10, while the other end is embedded in the positioning step 108 and tightly abuts against the corresponding sealing gasket 10. The two sealing gaskets 10 seal the installation position of the high-temperature resistant glass plate 3 and clamp and fix it in place, preventing breakage during assembly.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A boiler observation door, comprising a housing (1), said housing (1) having an observation end (1a) and a mounting end (1b), characterized in that, The observation end (1a) of the housing (1) has a flange connecting plate (100), and a flange clamping plate (2) is provided on the opposite side of the flange connecting plate (100). A high-temperature resistant glass plate (3) is provided between the flange connecting plate (100) and the flange clamping plate (2). The flange connecting plate (100) and the flange clamping plate (2) are connected by fasteners and clamp the high-temperature resistant glass plate (3). The housing (1) has a left side plate (101) and a right side plate (102). The inner wall of the right side plate (102) is recessed to the right to form a positioning groove (103). The left side plate (101) has a mounting hole (104). The outer side wall of the left side plate (101) has a mounting sleeve (105) protruding to the left at the position corresponding to the mounting hole (104). The mounting sleeve (105) is coaxially arranged with the mounting hole (104). Furthermore, the inner diameter of the mounting sleeve (105) is larger than the inner diameter of the mounting hole (104). A rotating shaft (4) is provided inside the housing (1). The left end of the rotating shaft (4) is inserted into the positioning groove (103). The right end of the rotating shaft (4) passes through the mounting hole (104) and the mounting sleeve (105) and extends to the outside of the mounting sleeve (105). A handle (5) is provided on the right end of the rotating shaft (4). The bottom end of the mounting sleeve (105) is filled with filler (6). A filler cover (7) is provided inside the mounting sleeve (105) and fitted on the rotating shaft (4). The filler cover (7) is pressed tightly on the filler (6). An isolation door plate (8) is provided inside the housing (1) with one end fitted on the rotating shaft (4) and fixedly connected to the rotating shaft (4). When the other end of the isolation door plate (8) is against the inner wall of the housing (1), the isolation door plate (8) is inclined.

2. A boiler observation door according to claim 1, characterized in that, The boiler fire door also includes a clamping nut (9), one end of which is disposed inside the mounting sleeve (105) and threadedly connected to the inner wall of the mounting sleeve (105), and one end of the clamping nut (9) is pressed against the packing cover (7). The clamping nut (9) has a shaft hole (90), and the rotating shaft (4) is disposed through the shaft hole (90). There is a gap between the outer circumferential surface of the rotating shaft (4) and the inner wall of the shaft hole (90).

3. A boiler observation door according to claim 1, characterized in that, One end of the isolation door panel (8) has a connection hole one (80), and the rotating shaft (4) passes through the connection hole one (80). The outer wall of one end of the isolation door panel (8) has a connection hole two (81) along the radial direction of the connection hole one (80). The connection hole two (81) is connected to the connection hole one (80). A locking screw is screwed into the connection hole two (81), and one end of the locking screw abuts against the rotating shaft (4).

4. A boiler observation door according to claim 3, characterized in that, The mounting end (1b) has a mounting opening (106). When one end of the isolation door panel (8) is in contact with the inner wall of the housing (1), the second connection hole (81) is oriented horizontally toward the mounting opening (106).

5. A boiler observation door according to claim 1, characterized in that, The inner circumferential surface of the flange connecting plate (100) has a positioning step one (107), and the inner circumferential surface of the flange clamping plate (2) has a positioning step two (108). Both the positioning step one (107) and the positioning step two (108) are provided with sealing gaskets (10). One end of the high-temperature resistant glass plate (3) is embedded in the positioning step one (107) and is in close contact with the corresponding sealing gasket (10). The other end of the high-temperature resistant glass plate (3) is embedded in the positioning step two (108) and is in close contact with the corresponding sealing gasket (10).

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