Steam purging device drain structure and soot blower

Abstract

The utility model discloses a steam purging device drain structure and soot blower, including the isolation box for installing to the furnace wall outer wall, the side wall on isolation box opposite furnace wall purging hole is provided with the hole of going in, the hole of going in is used for the outer gun tube of steam purging device to go in, the bottom of isolation box is provided with the drain pipe, one side in isolation box is installed with fixed baffle, and the position of isolation box side wall corresponds fixed baffle and is provided with slide hole, and the movable baffle is inserted into the slide hole, when movable baffle and fixed baffle abut, movable baffle and fixed baffle will be separated between the outer gun tube and purging hole, and the drain pipe is located one side of outer gun tube. When movable baffle closes, the outer gun tube is separated with the purging hole on furnace wall, so that the inner gun tube and outer gun tube can be preheated and drained, and the condensed water enters isolation box and is discharged from the drain pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of soot blowing devices for thermal power plants, and in particular to a hydrophobic structure for a steam purging device and a soot blower. Background Technology

[0002] The current structure and installation method of soot blowers in thermal power plants are similar to the gear and rack telescopic steam soot blower structure disclosed in CN213930987U. The inner gun tube of the soot blower is fixed, and one end of the outer gun tube is slidably and sealed onto the inner gun tube, while the other end is equipped with a nozzle. In use, high-pressure steam is introduced into one end of the inner gun tube, and the end of the outer gun tube with the nozzle extends into the furnace body, thereby blowing away the dust on the heated surfaces inside the furnace body.

[0003] Before purging, the peripheral pipes of the sootblower are at low temperatures, so preheating and drainage are necessary. A drainage system is required for this process. Currently, the drainage system used is the same as the energy-saving drainage system for a boiler steam sootblower disclosed in CN204593409U. Before sootblowing, the first inlet valve is closed, and the second inlet valve and the fourth drainage valve are opened. After preheating and drainage, the fourth drainage valve is closed, and the first inlet valve is opened, allowing steam to enter the sootblower. However, this drainage system lacks preheating and drainage for the inner and outer nozzles of the sootblower. This results in the steam initially passing through the inner and outer nozzles condensing into water during sootblowing due to their low temperature, causing water to spray into the heated surfaces inside the furnace. To address this issue, technicians have improved the sootblower. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the problems existing in the background art and provide a steam purging device drainage structure and soot blower. By installing an isolation box on the outer wall of the furnace, and installing a fixed sealing plate and a movable sealing plate inside the isolation box, when the movable sealing plate is closed, the outer gun tube is separated from the purging hole on the furnace wall. In this way, the inner and outer gun tubes can be preheated and drained. After the condensate enters the isolation box, it is discharged from the drainage pipe. When the movable sealing plate is opened, the outer gun tube can pass through the purging hole and extend into the furnace body.

[0005] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A steam purging device drainage structure includes an isolation box for installation on the outer wall of a furnace. An insertion hole is provided on the side wall of the isolation box facing the furnace wall purging hole, through which the outer gun tube of the steam purging device is inserted. A drainage pipe is provided at the bottom of the isolation box. A fixed sealing plate is installed on one side inside the isolation box. A sliding hole is provided on the side wall of the isolation box at the position corresponding to the fixed sealing plate. A movable sealing plate is movably inserted into the sliding hole. When the movable sealing plate abuts against the fixed sealing plate, the movable sealing plate and the fixed sealing plate separate the outer gun tube from the purging hole. The drainage pipe is located on one side of the outer gun tube.

[0006] The isolation box includes a frame and an end plate. The frame has a rectangular structure. One end of the frame is fixed to the furnace wall, and the other end is fixedly installed with an end plate. The through hole is set on the end plate, and the sliding hole is set on the frame.

[0007] A connecting plate is fixedly connected to one end of the frame and the furnace wall. A fixing plate is installed on the furnace wall. Both the fixing plate and the connecting plate have clearance holes in the middle. The connecting plate is installed on the fixing plate with bolts.

[0008] A support sleeve is installed inside the insertion hole. The support sleeve is fixed to the end plate by screws, and the outer gun barrel passes through the support sleeve.

[0009] A disassembly plate is also installed on the outer side of the end plate by bolts. The disassembly plate has a central hole, and a support sleeve is installed in the central hole. The support sleeve is fixed to the disassembly plate by screws, and the outer gun barrel passes through the support sleeve.

[0010] The fixed sealing plate has a groove on its upper side and a protrusion on its lower side. The protrusion is adapted to the groove and can be inserted into the groove.

[0011] The fixed sealing plate has a protrusion on its upper side, and the movable sealing plate has a groove on its lower side that matches the protrusion.

[0012] It also includes a push rod device, which is used to install onto a support on the furnace wall. A threaded sleeve is fixed to the top of the movable sealing plate, and the telescopic end of the push rod device is screwed and fixed to the threaded sleeve.

[0013] The inner wall of the isolation box is fixed with guide plates on both sides of the movable sealing plate, and the movable sealing plate and the guide plates are slidably connected.

[0014] A soot blower employs the hydrophobic structure of the aforementioned steam purging device.

[0015] The features of this utility model using the above-mentioned technical solution are: 1. This utility model involves installing an isolation box on the outer wall of the furnace, and installing a fixed sealing plate and a movable sealing plate inside the isolation box. When the movable sealing plate is closed, the outer gun tube is separated from the purge hole on the furnace wall, so that the inner and outer gun tubes can be preheated and drained. After the condensate enters the isolation box, it is discharged from the drain pipe. When the movable sealing plate is opened, the outer gun tube can pass through the purge hole and extend into the furnace body.

[0016] 2. A disassembly plate is bolted to the outer side of the end plate of this utility model. The disassembly plate has a central hole, into which a support sleeve is installed. The support sleeve is fixed to the disassembly plate with screws. When replacing the support sleeve, the outer gun barrel is moved to the right to exit the isolation box, and the screws on the disassembly plate and end plate are removed, allowing the disassembly plate to be removed. After removing the disassembly plate, the connecting screws between the support sleeve and the disassembly plate are removed, and the support sleeve is tapped in the opposite direction to remove it, improving the convenience of replacing the support sleeve.

[0017] 3. The fixed sealing plate of this utility model has a protrusion on its upper side, and the movable sealing plate has a groove on its lower side that matches the protrusion. The groove matches the protrusion, and when the movable sealing plate moves down to close, the protrusion inserts into the groove, improving the sealing effect.

[0018] 4. This utility model also includes a push rod device, the telescopic end of which is screwed and fixed to the threaded sleeve, and the movable sealing plate is driven to move up and down through the push rod device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the structure of the soot blower of this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the hydrophobic structure of the steam purging device of this utility model.

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0023] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of BB.

[0024] Figure 5 for Figure 2 Schematic diagram of the CC cross-section structure.

[0025] Figure 6 This is a schematic diagram of the structure of the fixed sealing plate in this utility model.

[0026] Figure 7 This is a schematic diagram of the movable sealing plate in this utility model.

[0027] Figure label: 1. Steam purging device; 2. External gun barrel; 3. Furnace wall; 4. Purge hole; 5. Support base; Isolation box 100, drainage pipe 101; Through hole 111, sliding hole 112, frame 113, end plate 114, fixing plate 115, butt plate 116, clearance hole 117; Fixed sealing plate 120, groove 121, protrusion 122; 130 movable sealing plate, 131 protrusion, 132 groove, 133 threaded sleeve; Push rod device 140, support plate 141, guide plate 150, support sleeve 170, disassembly plate 180. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0030] Example 1: See Figures 1 to 7A steam purging device drainage structure includes an isolation box 100 for installation on the outer wall of a furnace wall 3. An insertion hole 111 is provided on the side wall of the isolation box 100 facing the purging hole 4 of the furnace wall 3. The insertion hole 111 is used for the outer gun tube 2 of the steam purging device 1 to pass through. A drainage pipe 101 is provided at the bottom of the isolation box 100. A fixed sealing plate 120 is installed on one side inside the isolation box 100. A sliding hole 112 is provided on the side wall of the isolation box 100 at the position corresponding to the fixed sealing plate 120. A movable sealing plate 130 is movably inserted into the sliding hole 112. When the movable sealing plate 130 abuts against the fixed sealing plate 120, the movable sealing plate 130 and the fixed sealing plate 120 separate the outer gun tube 2 from the purging hole 4. The drainage pipe 101 is located on one side of the outer gun tube 2. An isolation box 100 is installed on the outer wall of the furnace wall 3. A fixed sealing plate 120 and a movable sealing plate 130 are installed inside the isolation box 100. When the movable sealing plate 130 is closed, the outer gun tube 2 is separated from the purge hole 4 on the furnace wall 3. This allows the inner gun tube and the outer gun tube 2 to be preheated and drained. After the condensate enters the isolation box 100, it is discharged from the drain pipe 101. When the movable sealing plate 130 is opened, the outer gun tube 2 can pass through the purge hole 4 and extend into the furnace body.

[0031] See Figure 1 , 2 The following description, using CN204593409U as an example, illustrates an energy-saving drainage system for a boiler steam soot blower. During drainage before purging, the second air inlet valve opens, the fourth drainage valve opens, and the first air inlet valve also opens or opens to a certain degree. At this time, the movable sealing plate 130 is in the closed state. (See [reference needed]). Figure 2 The steam that enters the inner barrel and the outer barrel 2 is ejected from the nozzle at the front end of the outer barrel 2. The nozzle is located inside the isolation box 100 at this time. The steam and the condensed water are discharged from the drain pipe 101, which can be connected to the drain header.

[0032] See Figure 2 In this embodiment, the isolation box 100 includes a frame 113 and an end plate 114. The frame 113 has a rectangular structure. One end of the frame 113 is fixedly installed to the furnace wall 3, and the other end is fixedly installed with the end plate 114. The through hole 111 is provided on the end plate 114, and the sliding hole 112 is provided on the frame 113.

[0033] Example 2: The difference from Embodiment 1 is that, in this embodiment, see Figure 2 A butt plate 116 is welded to one end of the frame 113 and the furnace wall 3. A fixing plate 115 is fixedly installed on the furnace wall 3. The fixing plate 115 is welded or fixed to the furnace wall. Both the fixing plate 115 and the butt plate 116 are provided with clearance holes 117 in the middle. The butt plate 116 is installed on the fixing plate 115 with bolts, so that the isolation box 100 can be easily installed and disassembled.

[0034] Example 3: Based on Embodiment 1 or Embodiment 2, a support sleeve 170 is installed inside the insertion hole 111. The support sleeve 170 is fixed to the end plate 114 by screws, and the outer gun barrel 2 passes through the support sleeve 170. The support sleeve 170 serves to limit and seal, preventing the outer gun barrel 2 from jumping during extension and retraction. In this embodiment, the support sleeve 170 adopts a self-lubricating bearing, and the support sleeve 170 is slidably connected to the outer gun barrel 2, improving the sealing between the outer gun barrel 2 and the insertion hole 111.

[0035] Example 4: Since the support sleeve 170 is positioned by being snapped into the insertion hole 111, it is inconvenient to disassemble the support sleeve 170 separately. Therefore, the difference between this embodiment and embodiment 3 is that, see... Figure 2 A disassembly plate 180 is bolted to the outer side of end plate 114. The disassembly plate 180 is larger than the end plate 114. A central hole is provided on the disassembly plate 180, and a support sleeve 170 is installed inside the central hole. The support sleeve 170 is fixed to the disassembly plate 180 with screws, and the outer gun barrel 2 passes through the support sleeve 170. When replacing the support sleeve 170, the outer gun barrel 2 is moved to the right and removed from the isolation box 100. The screws on the disassembly plate 180 and end plate 114 are then removed, allowing the disassembly plate 180 to be removed. After removing the disassembly plate 180, the connecting screws between the support sleeve 170 and the disassembly plate 180 are removed, and the support sleeve 170 is knocked out by tapping it in the opposite direction. This structure improves the ease of replacing the support sleeve 170.

[0036] Example 5: Based on Example 1, 2, 3, or 4, see [link to example]. Figure 6 , 7 The fixed sealing plate 120 has a groove 121 on its upper side, and the movable sealing plate 130 has a protrusion 131 on its lower side. The protrusion 131 is adapted to the groove 121 and can be inserted into the groove 121. See also Figure 3 The groove 121 is for the outer gun barrel 2 to pass through. When the movable sealing plate 130 moves down to close, the protrusion 131 is inserted into the groove 121 to form a closed structure.

[0037] Of course, the fixed sealing plate 120 and the movable sealing plate 130 can also be two rectangular flat plates.

[0038] Further, see Figure 6 , 7 The fixed sealing plate 120 has a protrusion 122 on its upper side, and the movable sealing plate 130 has a groove 132 on its lower side that matches the protrusion 122. The groove 132 matches the protrusion 122, and when the movable sealing plate 130 moves down to close, the protrusion 122 is inserted into the groove 132 to improve the sealing effect.

[0039] The protrusion 122 can be as follows: Figure 5 The trapezoidal structure can also be a triangular structure or a semi-circular arc structure. The groove 132 and the protrusion 122 are structurally compatible.

[0040] Example 6: Based on Example 1, 2, 3, 4, or 5, see [link to example]. Figure 1 , 2 5. This utility model also includes a push rod device 140, which is used to be installed on the support seat 5 on the furnace wall 3. See [reference needed] Figure 7 A threaded sleeve 133 is fixedly connected to the top of the movable sealing plate 130, and the telescopic end of the push rod device 140 is screwed and fixed to the threaded sleeve 133. The movable sealing plate 130 is driven to move up and down by the push rod device 140.

[0041] The support base 5 is used for installation and connection with the soot blower 1. In this embodiment, the push rod device 140 is installed on the support base 5 using the support base 5. Specifically, see Figure 5 A support plate 141 is welded onto the support base 5, and a push rod device 140 is installed on the support plate 141 by bolts. The telescopic end of the push rod device 140 passes downward through the hole in the center of the support plate 141.

[0042] In this embodiment, the push rod device 140 is a cylinder.

[0043] See Figure 2 , 3 4. The inner wall of the isolation box 100 has guide plates 150 fixedly connected to both sides of the movable sealing plate 130. The movable sealing plate 130 and the guide plates 150 are slidably connected. The guide plates 150 guide the movable sealing plate 130 and improve the sealing performance.

[0044] Example 7: Based on Example 1, 2, 3, 4, 5, or 6, see [link to example]. Figure 1 This utility model also proposes a soot blower, which adopts a hydrophobic structure of a steam purging device as described in Embodiments 1, 2, 3, 4, 5, or 6.

[0045] The working principle or process of this utility model: See Figure 1 , 2 The following description, using CN204593409U as an example, illustrates an energy-saving drainage system for a boiler steam soot blower. During drainage before purging, the second air inlet valve opens, the fourth drainage valve opens, and the first air inlet valve also opens or opens to a certain degree. At this time, the movable sealing plate 130 is in the closed state. (See [reference needed]). Figure 2The steam that enters the inner barrel and the outer barrel 2 is ejected from the nozzle at the front end of the outer barrel 2. The nozzle is located inside the isolation box 100 at this time. The steam and the condensed water are discharged from the drain pipe 101, which can be connected to the drain header.

[0046] After preheating and drainage are completed, the fourth drainage valve is closed, the movable sealing plate 130 is opened, and the first air inlet valve is fully opened. The outer gun barrel 2 is inserted into the furnace body for purging. After purging is completed, the second air inlet valve is closed, the nozzle of the outer gun barrel 2 returns to the isolation box 100, and the movable sealing plate 130 is closed.

[0047] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A hydrophobic structure for a steam purging device, characterized in that: The device includes an isolation box (100) for installation on the outer wall of the furnace wall (3). An insertion hole (111) is provided on the side wall of the isolation box (100) facing the purge hole (4) of the furnace wall (3). The insertion hole (111) is used for the outer gun tube (2) of the steam purging device (1) to pass through. A drain pipe (101) is provided at the bottom of the isolation box (100). A fixed sealing plate (120) is installed on one side inside the isolation box (100). A sliding hole (112) is provided on the side wall of the isolation box (100) at the position corresponding to the fixed sealing plate (120). A movable sealing plate (130) is movably inserted into the sliding hole (112). When the movable sealing plate (130) abuts against the fixed sealing plate (120), the movable sealing plate (130) and the fixed sealing plate (120) separate the outer gun tube (2) from the purge hole (4). The drain pipe (101) is located on one side of the outer gun tube (2).

2. The hydrophobic structure of a steam purging device according to claim 1, characterized in that: The isolation box (100) includes a frame (113) and an end plate (114). The frame (113) has a rectangular structure. One end of the frame (113) is fixed to the furnace wall (3), and the other end is fixedly installed with the end plate (114). The through hole (111) is set on the end plate (114), and the sliding hole (112) is set on the frame (113).

3. The hydrophobic structure of a steam purging device according to claim 2, characterized in that: The frame (113) is fixedly connected to the furnace wall (3) at one end with a connecting plate (116). A fixing plate (115) is installed on the furnace wall (3). Both the fixing plate (115) and the connecting plate (116) have clearance holes (117) in the middle. The connecting plate (116) is installed on the fixing plate (115) with bolts.

4. The hydrophobic structure of a steam purging device according to claim 2, characterized in that: A support sleeve (170) is installed inside the insertion hole (111). The support sleeve (170) is fixed to the end plate (114) by screws. The outer gun barrel (2) is inserted into the support sleeve (170).

5. The hydrophobic structure of a steam purging device according to claim 2, characterized in that: A disassembly plate (180) is also installed on the outer side of the end plate (114) by bolts. The disassembly plate (180) has a central hole, and a support sleeve (170) is installed in the central hole. The support sleeve (170) is fixed to the disassembly plate (180) by screws, and the outer gun barrel (2) passes through the support sleeve (170).

6. A hydrophobic structure for a steam purging device according to any one of claims 1 to 5, characterized in that: The fixed sealing plate (120) has a groove (121) on its upper side and a protrusion (131) on its lower side. The protrusion (131) is adapted to the groove (121) and can be inserted into the groove (121).

7. The hydrophobic structure of a steam purging device according to claim 6, characterized in that: The fixed sealing plate (120) has a protrusion (122) on its upper side, and the movable sealing plate (130) has a groove (132) on its lower side that is adapted to the protrusion (122).

8. The hydrophobic structure of a steam purging device according to claim 1, characterized in that: It also includes a push rod device (140), which is used to install on the support seat (5) on the furnace wall (3). The top of the movable sealing plate (130) is fixed with a threaded sleeve (133), and the telescopic end of the push rod device (140) is screwed and fixed to the threaded sleeve (133).

9. A hydrophobic structure for a steam purging device according to any one of claims 1 to 5 and 8, characterized in that: The inner wall of the isolation box (100) is fixed with guide plates (150) on both sides of the movable sealing plate (130), and the movable sealing plate (130) and the guide plates (150) are slidably connected.

10. A soot blower, characterized in that: The device employs a hydrophobic structure for a steam purging apparatus as described in claim 1.

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