Full-load denitration equipment for coping with boiler peak shaving operation

Abstract

The utility model discloses a kind of full-load denitration equipment for coping with boiler peak shaving operation, it is related to the technical field of boiler denitration, including body and the detection box of being connected and installed at the place above body, the detection net is attached and installed in the inner chamber of detection box, full-load denitration equipment for coping with boiler peak shaving operation can be filtered again to flue gas after denitration by the setting of detection net in detection box when using, to improve the effect of flue gas purification, and the setting of dismounting component can dismantle and replace detection net, avoid long-term use its poor filtering effect, and the setting of gas detector can detect filtered gas, so that the filtering effect of detection net can be detected, when the detected gas does not meet emission standard, signal will be transmitted to controller, controller will start solenoid valve to close and alarm, to facilitate staff to replace detection net in time.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler denitrification, specifically a full-load denitrification device for boiler peak-shaving operation. Background Technology

[0002] The emission standards for air pollutants from thermal power plants must achieve ultra-low emissions and require the implementation of denitrification devices under full load conditions. A large number of coal-fired boilers are equipped with SCR (Selective Catalytic Reduction) denitrification devices. However, due to the inherent characteristics of SCR denitrification devices, there are strict requirements for the reaction temperature (300-420℃). When the inlet flue gas temperature of the denitrification device is lower than the lower limit, the SCR denitrification device will not be able to operate normally.

[0003] Document CN202021248860.4 proposes a full-load denitrification device for deep peak shaving in boilers, comprising: a tail flue gas well turning chamber, a heater, and an economizer sequentially arranged along the flue gas flow direction on the main flue; the inlet of the bypass flue is connected to the tail flue gas well turning chamber, and the outlet of the bypass flue is located on the flue at the inlet of the SCR reactor; the economizer is connected to a feedwater pipeline; along the feedwater pipeline in the opposite direction of the feedwater flow, a No. 0 high-pressure heater, a No. 1 high-pressure heater, a No. 2 high-pressure heater, a No. 3 high-pressure heater, a feedwater pump, and a deaerator are sequentially arranged; the No. 0 high-pressure heater is connected to a No. 0 high-pressure heater extraction pipeline, and the No. 0 high-pressure heater extraction pipeline is equipped with a No. 0 high-pressure heater extraction pipeline regulating valve. This device, by controlling the flue gas bypass flow rate and coupling the No. 0 high-pressure heater into operation, can achieve full-load denitrification of the unit and control the operating flue gas temperature.

[0004] The full-load denitrification device for deep peak shaving of boilers proposed in the above patent can achieve deep peak shaving and full-load denitrification of boilers during use. However, it lacks a component to re-detect the flue gas after denitrification. Due to poor purification effect after long-term use, the flue gas is not completely purified during denitrification, which affects the denitrification effect and reduces the practicality of the device.

[0005] To address the above issues, a full-load denitrification device for boiler peak-shaving operation is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a full-load denitrification device for boiler peak-shaving operation. By using this device, the problem mentioned above is solved: the lack of a component for further filtering of flue gas after denitrification, and the phenomenon that the flue gas is not thoroughly purified due to the poor purification effect of the filter screen after long-term use, which affects the denitrification effect and reduces the practicality of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a full-load denitrification device for boiler peak-shaving operation, comprising a main body and a detection box installed above the main body. The inner cavity of the detection box is fitted with a detection net, and multiple flue gas detection probes are installed inside the detection net. Disassembly components are installed on both sides of the detection net, and a warning component is installed above one side of the top of the detection net. Guide plates are fixedly installed at the bottom of the inner cavity of the detection box near both sides, and the other side of the guide plates is fixedly installed on both sides of the inner cavity of the detection box. The disassembly assembly includes a pull plate fixedly installed in the middle of one side of the detection net and a slot opened on the top side of the pull plate. A rod is inserted into the inner cavity of the slot, and a sliding plate is fixedly installed at the upper end of the rod. A flat plate is provided above the top of the sliding plate, and a T-shaped rod is slidably installed on the flat plate. The lower end of the T-shaped rod is fixedly installed on the outer wall of the sliding plate.

[0008] Furthermore, connecting rods are fixedly installed on both sides of the bottom of the testing box, and a fixing ring is fixedly installed on the bottom of the connecting rods. The fixing ring is fixedly installed on the outer wall of the main body, and an exhaust pipe with one end penetrating through and extending into the top of the testing box is fixedly installed. Disassembly ports are opened on both sides of the testing box, and the two sides of the testing net extend into the inner cavity of the disassembly port respectively.

[0009] Furthermore, a grip opening is provided on the other side of the top of the pull plate.

[0010] Furthermore, a guide plate is slidably mounted on the inner side of the sliding plate, and the inner side of the guide plate is fixedly mounted on the outer wall of the detection box, and the inner side of the flat plate is fixedly mounted on the outer wall of the guide plate.

[0011] Furthermore, a spring is movably sleeved on the outer side of the T-shaped rod, and the upper and lower ends of the spring are respectively fixedly installed on the outer walls of the T-shaped rod and the plate.

[0012] Furthermore, the warning component includes a battery pack fixedly installed at one lower end of one side of the detection box and a controller located at the rear of the battery pack. The inner side of the controller is fixedly installed on the outer wall of the detection box, and an alarm is provided at the rear of the controller. The inner side of the alarm is fixedly installed on the outer wall of the detection box, and a gas detector is provided at the top of one side of the detection net.

[0013] Furthermore, a crossbar is fixedly installed on one side of the gas detector, and the end of the crossbar away from the gas detector is fixedly installed on the inner wall of the inner cavity of the detection box.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: When using a full-load denitrification equipment for boiler peak-shaving operation, the detection screen in the detection box can detect the flue gas after denitrification, thereby improving the flue gas purification effect of the denitrification equipment. The disassembly component allows for the disassembly and replacement of the detection screen, preventing long-term use from hindering normal testing of the denitrification equipment. The gas detector can detect the filtered gas, thus enabling the detection of the flue gas through the detection screen. When the detected gas does not meet emission standards, a signal is transmitted to the controller, which then activates the solenoid valve to close and the alarm to sound, facilitating timely replacement of the detection screen by staff. Attached Figure Description

[0015] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a partial bottom-view sectional perspective view of the testing box of this utility model; Figure 3 This is a right-side perspective view of the present invention; Figure 4 This is a frontal perspective view of the present invention. Figure 5 This is a partial cross-sectional perspective view of the testing box of this utility model.

[0016] In the diagram: 1. Main body; 2. Detection box; 21. Connecting rod; 22. Fixing ring; 23. Exhaust pipe; 24. Disassembly port; 3. Detection net; 4. Disassembly assembly; 41. Pull plate; 411. Grip; 42. Slot; 43. Insert rod; 44. Sliding plate; 441. Guide plate; 45. T-shaped rod; 451. Spring; 5. Warning assembly; 51. Battery pack; 52. Controller; 53. Alarm; 54. Gas detector; 541. Crossbar; 6. Deflector. Detailed Implementation

[0017] 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.

[0018] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0019] Combination Figure 1This utility model discloses a full-load denitrification device for boiler peak-shaving operation, comprising a main body 1 and a detection box 2 connected and installed above the main body 1. A detection mesh 3 is fitted into the inner cavity of the detection box 2, and multiple flue gas detection probes are installed inside the detection mesh. Disassembly components 4 are installed on both sides of the detection mesh 3, and a warning component 5 is installed on the top side of one side of the detection mesh 3. Guide plates 6 are fixedly installed at the bottom of the inner cavity of the detection box 2 near both sides, and the other side of the guide plates 6 is fixedly installed on both sides of the inner cavity of the detection box 2. The detection mesh 3 can be disassembled and replaced by the disassembly components 4, avoiding the inability to test the filtration effect of the denitrification device after long-term use. The warning component 5 can detect the filtered gas, making it convenient for staff to replace the detection mesh 3 in a timely manner.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1: Please see Figure 1 - Figure 5 The disassembly assembly 4 includes a pull plate 41 fixedly installed in the middle of one side of the detection net 3 and a slot 42 opened on the top side of the pull plate 41. A rod 43 is inserted into the inner cavity of the slot 42, and a sliding plate 44 is fixedly installed at the upper end of the rod 43. A flat plate is provided above the top of the sliding plate 44, and a T-shaped rod 45 is slidably installed on the flat plate. The lower end of the T-shaped rod 45 is fixedly installed on the outer wall of the sliding plate 44. The pull plate 41 facilitates pulling the detection net 3 to the outside of the detection box 2 when disassembling it, while the slot 42 and the rod 43 facilitate locking the pull plate 41, making the operation convenient.

[0022] Connecting rods 21 are fixedly installed on both sides of the bottom of the test box 2, and fixing rings 22 are fixedly installed on the bottom of the connecting rods 21. The fixing rings 22 are fixedly installed on the outer wall of the main body 1. An exhaust pipe 23 (with a solenoid valve installed on the outside of the exhaust pipe 23) is fixedly installed on the top of the test box 2. Disassembly ports 24 are opened on both sides of the test box 2, and the two sides of the test net 3 extend into the inner cavity of the disassembly port 24 respectively. The test box 2 can be supported and fixed by the connecting rods 21 and the fixing rings 22. The exhaust pipe 23 facilitates the discharge of the flue gas after testing. In addition, the disassembly port 24 facilitates the installation and disassembly of the test net 3.

[0023] A grip opening 411 is provided on the other side of the top of the pull plate 41, which facilitates the movement of the pull plate 41.

[0024] A guide plate 441 is slidably installed on the inner side of the sliding plate 44. The inner side of the guide plate 441 is fixedly installed on the outer wall of the detection box 2, and the inner side of the flat plate is fixedly installed on the outer wall of the guide plate 441. The guide plate 441 facilitates the guiding function of the sliding plate 44.

[0025] A spring 451 is movably sleeved on the outer side of the T-shaped rod 45, and the upper and lower ends of the spring 451 are respectively fixedly installed on the outer side wall of the T-shaped rod 45 and the plate. The position of the sliding plate 44 can be adjusted by the setting of the spring 451.

[0026] Specifically, during use, the main body 1 can perform full-load denitrification of the flue gas in the boiler. It is also suitable for denitrification during deep peak shaving of the boiler. After denitrification, the flue gas will be discharged into the inner cavity of the detection box 2. After passing through the detection net 3, the flue gas will be discharged through the exhaust pipe 23. When a warning is received, the detection net 3 can be disassembled. Pull the T-shaped rod 45 upward. When the T-shaped rod 45 moves upward, it will stretch the spring 451 and drive the sliding plate 44 upward. When the sliding plate 44 moves upward, it will drive the insertion rod 43 away from the inner cavity of the slot 42. At this time, the grip 411 can be pulled to drive the pull plate 41 outward, thereby driving the detection net 3 to be taken out through the disassembly port 24 for easy replacement. Then, the operation is reversed to install the new detection net 3.

[0027] Example 2: Please see Figure 1 - Figure 3 The warning component 5 includes a battery pack 51 fixedly installed at one lower end of one side of the detection box 2 and a controller 52 located behind the battery pack 51. The inner side of the controller 52 is fixedly installed on the outer wall of the detection box 2, and an alarm 53 is provided on the rear side of the controller 52. The inner side of the alarm 53 is fixedly installed on the outer wall of the detection box 2. A gas detector 54 is provided above one side of the top of the detection net 3. The gas detector 54 can be used to detect the filtered flue gas, thereby facilitating the timely replacement of the detection net 3.

[0028] A crossbar 541 is fixedly installed on one side of the gas detector 54, and the end of the crossbar 541 away from the gas detector 54 is fixedly installed on the inner wall of the inner cavity of the detection box 2. The crossbar 541 can support the gas detector 54.

[0029] Specifically, after the flue gas is filtered by the detection mesh 3, it is discharged through the exhaust pipe 23. At this time, the gas detector 54 will detect the filtered flue gas. If the flue gas meets the standard after detection by the gas detector 54, it will transmit a signal to the controller 52. The controller 52 will then control the solenoid valve to open, thereby allowing the flue gas to be discharged. If the detection does not meet the standard, the controller 52 will immediately close the solenoid valve and control the alarm 53 to run, emitting an alarm sound. This can alert the staff to disassemble and replace the detection mesh 3, thereby improving the effectiveness and efficiency of flue gas detection.

[0030] In summary: During use, the main body 1 can perform full-load denitrification of the flue gas in the boiler, and is also suitable for denitrification during deep peak shaving of the boiler. After denitrification, the flue gas will be discharged into the inner cavity of the detection box 2. After passing through the detection net 3, the flue gas will be discharged through the exhaust pipe 23. At this time, the gas detector 54 will detect the filtered flue gas. If the flue gas meets the standard after detection by the gas detector 54, it will transmit a signal to the controller 52. At this time, the controller 52 will control the solenoid valve to open, thereby allowing the flue gas to be discharged. If the detection does not meet the standard, the controller 52 will... This will close the solenoid valve and control the alarm 53 to sound an alarm, thus alerting staff to disassemble and replace the detection mesh 3 to improve the effect and efficiency of flue gas filtration. At this time, the T-shaped rod 45 can be pulled upward. When the T-shaped rod 45 moves upward, it will stretch the spring 451 and drive the sliding plate 44 upward. When the sliding plate 44 moves upward, it will drive the insertion rod 43 away from the inner cavity of the slot 42. At this time, the grip 411 can be pulled to drive the pull plate 41 outward, thereby driving the detection mesh 3 to be taken out through the disassembly port 24 for easy replacement. Then, the operation can be reversed to install the new detection mesh 3.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A full-load denitrification device for boiler peak-shaving operation, comprising a main body (1) and a detection box (2) connected to and installed above the main body (1), characterized in that: The inner cavity of the detection box (2) is fitted with a detection net (3), and a disassembly assembly (4) is installed on both sides of the detection net (3). A warning assembly (5) is installed on the top side of the detection net (3). A guide plate (6) is fixedly installed on both sides of the bottom of the inner cavity of the detection box (2), and the other side of the guide plate (6) is fixedly installed on both sides of the inner cavity of the detection box (2). The disassembly assembly (4) includes a pull plate (41) fixedly installed in the middle of one side of the detection net (3) and a slot (42) opened on the top side of the pull plate (41). A rod (43) is inserted into the inner cavity of the slot (42), and a sliding plate (44) is fixedly installed at the upper end of the rod (43). A flat plate is provided above the top of the sliding plate (44), and a T-shaped rod (45) is slidably installed on the flat plate. The lower end of the T-shaped rod (45) is fixedly installed on the outer wall of the sliding plate (44).

2. The full-load denitrification equipment for boiler peak-shaving operation according to claim 1, characterized in that: Connecting rods (21) are fixedly installed on both sides of the bottom of the test box (2), and a fixing ring (22) is fixedly installed on the bottom of the connecting rods (21). The fixing ring (22) is fixedly installed on the outer wall of the body (1), and an exhaust pipe (23) with one end penetrating and extending into its interior is fixedly installed on the top of the test box (2). Disassembly ports (24) are opened on both sides of the test box (2), and the two sides of the test net (3) extend into the inner cavity of the disassembly port (24).

3. The full-load denitrification equipment for boiler peak-shaving operation according to claim 1, characterized in that: A grip (411) is provided on the other side of the top of the pull plate (41).

4. The full-load denitrification equipment for boiler peak-shaving operation according to claim 1, characterized in that: The inner side of the sliding plate (44) is slidably mounted with a guide plate (441), the inner side of the guide plate (441) is fixedly mounted on the outer wall of the detection box (2), and the inner side of the plate is fixedly mounted on the outer wall of the guide plate (441).

5. The full-load denitrification equipment for boiler peak-shaving operation according to claim 1, characterized in that: A spring (451) is movably sleeved on the outer side of the T-shaped rod (45), and the upper and lower ends of the spring (451) are respectively fixedly installed on the outer wall of the T-shaped rod (45) and the plate.

6. The full-load denitrification equipment for boiler peak-shaving operation according to claim 1, characterized in that: The warning component (5) includes a battery pack (51) fixedly installed at one end of the lower side of the detection box (2) and a controller (52) located on the rear side of the battery pack (51). The inner side of the controller (52) is fixedly installed on the outer wall of the detection box (2), and an alarm (53) is provided on the rear side of the controller (52). The inner side of the alarm (53) is fixedly installed on the outer wall of the detection box (2), and a gas detector (54) is provided above the top side of the detection net (3).

7. A full-load denitrification device for boiler peak-shaving operation according to claim 6, characterized in that: A crossbar (541) is fixedly installed on one side of the gas detector (54), and the end of the crossbar (541) away from the gas detector (54) is fixedly installed on the inner wall of the inner cavity of the detection box (2).

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