Flue gas on-line detection equipment and system for natural gas power plant

Abstract

The invention discloses a natural gas power plant flue gas on-line detection device and system, and the device comprises a cabinet body, the front surface of which is connected with a cabinet door through a hinge; a drawable functional frame is arranged in the cabinet body, a limiting assembly is further arranged on the rear side of the interior of the cabinet body, and the limiting assembly is composed of a limiting piece and a clamping piece; wherein one side of the functional frame is semi-wrapped and limited by the limiting piece, and the clamping piece is clamped with the inner wall of the other side of the functional frame; through the design of the invention, the drawable functional frame is additionally arranged in the cabinet body, the functional frame supports the overall outward stable drawing, and in an equipment assembly stage, a technician can draw the functional frame to an open area outside the cabinet at first and then pull the functional frame out of the cabinet; independent installation and circuit pre-connection of functional modules such as the gaseous pollutant monitoring unit, the particulate matter sensor and the data acquisition module are completed in sequence, and high-precision butt joint operation in a narrow cabinet body is avoided.

Description

Technical Field

[0001] This invention belongs to the field of flue gas detection technology, specifically relating to an online flue gas detection device and system for natural gas power plants. Background Technology

[0002] Natural gas is increasingly used in power generation as a clean energy source, but its combustion process still produces pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter. Against this backdrop, the flue gas online monitoring system integrates four subsystems: gaseous pollutant monitoring, particulate matter monitoring, flue gas parameter monitoring, and data acquisition and processing. This enables real-time, continuous, and accurate monitoring of flue gas components, providing data support for environmental supervision and becoming a key technological means for the natural gas power generation industry to fulfill its pollution reduction responsibilities and adapt to the upgrading of environmental regulations.

[0003] During the initial assembly phase of the equipment, technicians need to install multiple data modules sequentially inside the cabinet. These modules include a gaseous pollutant monitoring unit, a particulate matter concentration sensor, a flue gas parameter acquisition module, and data transmission and processing components. During installation, it is crucial to ensure accurate electrical connections between modules while maintaining a neat and orderly cable layout to avoid signal interference. In the later operation and maintenance phase, maintenance personnel also need to operate inside the cabinet, including module calibration, troubleshooting, and component replacement. Due to the relatively small internal space and dense module arrangement, maintenance personnel must frequently adjust their posture, and tool usage is somewhat limited. Furthermore, insufficient lighting and limited ventilation inside the cabinet further increase the complexity of maintenance work. Summary of the Invention

[0004] The purpose of this invention is to provide an online flue gas monitoring device and system for natural gas power plants, so as to solve the problems of inconvenient initial assembly and subsequent maintenance of existing online monitoring devices mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online flue gas monitoring device for natural gas power plants, comprising: The cabinet has doors connected to its front surface via hinges. The cabinet has a pull-out functional frame inside, and a limiting component is also provided at the rear of the cabinet. The limiting component consists of a limiting member and a snap-fit ​​member. The limiting member partially encloses and limits one side of the functional frame, while the snap-fit ​​member snaps into the inner wall of the other side of the functional frame. One end of the limiting component is located on the outer side of the cabinet. An adjusting component is also provided between the limiting component and the cabinet. The adjusting component limits and stops the position of the limiting component in a specified position.

[0006] As a preferred technical solution of the present invention, the limiting member includes a limiting plate, a limiting plate, and a pushing plate; At least two limiting plates are provided, and one end of each limiting plate extends through the outside of the cabinet. A pull plate is also fixed at the end of the limiting plate that extends outside the cabinet. The limiting plate is fixed to the front surface of the limiting plate, and the limiting plate is entirely inside the cabinet. The limiting plate is partially wrapped around the vertical part on one side of the functional frame. The push plate is integrally formed at the other end of the limiting plate, and the push plate abuts against the snap-fit ​​component.

[0007] As a preferred technical solution of the present invention, the snap-fit ​​component includes a bracing plate, a snap-fit ​​plate, and a torsion spring; The diagonal bracing plate is fixed to the rear surface of the cabinet, while the card plate is inclined between the push plate and the inner side of the vertical part on the other side of the functional frame. A shaft is movably passed through the middle of the card plate, and the shaft is fixed to the inner surface of the cabinet. The two ends of the torsion spring are respectively fixed between the diagonal brace and the card plate. In its natural state, the torsion spring pushes the top of the card plate toward the inner wall of the functional frame. The push plate abuts against the bottom of the card plate; After all data modules are installed on the functional frame, push the functional frame into the cabinet. Then, pull the pull plate away from the outer wall of the cabinet. At this time, the pull plate will drive the limiting plate to move towards one side of the functional frame until the limiting plate clamps onto the vertical part of one side of the functional frame. At this time, the limiting plate limits the horizontal push position of the functional frame. At the same time, the push plate no longer squeezes the clamping plate. The torsion spring then springs outward from the compressed state, allowing the top of the clamping plate to engage with the inside of the other side of the functional frame. The bottom of the clamping plate remains in contact with the push plate. Conversely, when maintenance is required, push the pull plate towards the cabinet, thereby causing the limiting plate to separate from one side of the functional frame. The push plate also squeezes the bottom of the clamping plate, causing the top of the clamping plate to rotate out from the inner wall of the vertical part of the other side of the functional frame, while simultaneously squeezing the torsion spring.

[0008] As a preferred technical solution of the present invention, a slot is provided on the inner wall of the vertical part on the other side of the functional frame. The top of the card plate is inserted into the slot. The height of the slot is greater than or equal to the path that the card plate passes through when rotating, so as to ensure that the card plate can rotate normally and will not be blocked by the slot. At the same time, the card plate can be limited to the functional frame by the engagement between the slot and the card plate.

[0009] As a preferred technical solution of the present invention, angle steel is also fixed at the four corners inside the cabinet, and the four corners of the functional frame slide against the inner side of the angle steel. The angle steel can enhance the strength of the cabinet and also serve as a sliding track for the functional frame.

[0010] As a preferred technical solution of the present invention, a slot is also provided in the middle of the inner side of the pull plate, and the adjusting member is inserted into the slot.

[0011] In a preferred embodiment of the present invention, the adjusting component is a limiting block. The limiting block protrudes obliquely from its middle to one end, forming a pressing surface, while the other end of the limiting block forms a limiting part. The highest point of the protruding pressing surface and the height of the limiting part are both greater than the inner width of the slot. By pushing the limiting block, the pressing surface abuts against the slot, thereby limiting the position of the pull plate and the cabinet. At this point, the limiting plate and the slot plate limit the functional frame. During the initial installation and subsequent maintenance, the limiting part is pushed towards the pull plate. At this point, the concave and flat position of the limiting block in the middle moves into the slot and does not abut against the slot. Then, the pull plate can be pushed towards the cabinet. The limiting part is designed to prevent the limiting block from falling off entirely.

[0012] The present invention also discloses an online flue gas detection system for natural gas power plants, including an online detection device and a main control platform. The online detection device is connected to the main control platform via a combination of wired and wireless means. The online detection equipment has multiple data modules, including a gaseous pollutant monitoring unit, a particulate matter concentration receiving module, and a flue gas parameter acquisition module. This data module is connected to all the sensors that detect the flue gas. An alarm module is installed on the main control platform. This alarm module receives detection signals from the online detection equipment and issues an alarm when the data reaches the threshold set by the main control platform.

[0013] Compared with the prior art, the beneficial effects of the present invention are: By incorporating a pull-out functional frame inside the cabinet, this invention allows for smooth outward pulling of the entire unit. During equipment assembly, technicians can first remove the frame to an open area outside the cabinet to sequentially install and pre-connect the wiring for each functional module, including the gaseous pollutant monitoring unit, particulate matter sensor, and data acquisition module. This avoids high-precision docking operations within the confined cabinet. Similarly, during later maintenance, the entire frame can be pulled out, fully exposing each module to the external space, facilitating calibration, debugging, and replacement of faulty components. This design effectively expands the operational boundaries, freeing assembly and maintenance from the constraints of the cabinet's internal space while maintaining the structural integrity of the cabinet in its closed state. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the functional framework and cabinet of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram in a side view; Figure 4 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 5 This is a schematic diagram of the structure of the limiting block of the present invention.

[0015] In the picture: 100. Cabinet body; 101. Cabinet door; 102. Functional frame; 103. Angle steel; 104. Card slot; 200. Pull plate; 201. Limiting plate; 202. Limiting plate; 203. Push plate; 204. Diagonal brace plate; 205. Locking plate; 206. Locking slot; 300, Limiting block; 301, Abutting surface; 302, Limiting part. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1 to 5 This invention provides a technical solution: an online flue gas detection device for natural gas power plants, comprising... Cabinet body 100, front surface connected to cabinet door 101 via hinges; The cabinet 100 has a pull-out functional frame 102 inside, and a limit component is also provided at the rear of the cabinet 100. The limit component consists of a limit member and a snap-fit ​​member. Among them, the limiting member partially wraps and limits one side of the functional frame 102, while the snap-fit ​​member snaps into the inner wall of the other side of the functional frame 102. One end of the limiting component is located on the outer side of the cabinet 100. An adjusting component is also provided between the limiting component and the cabinet 100. The adjusting component limits and stops the position of the limiting component when it is in a specified position.

[0018] In this embodiment, the limiting components include a limiting plate 201, a limiting plate 202, and a pushing plate 203; At least two limit plates 201 are provided, and one end of each limit plate 201 extends through to the outside of the cabinet 100. A pull plate 200 is also fixed at the end of the limit plate 201 that extends outside the cabinet 100. The limiting plate 202 is fixed on the front surface of the limiting plate 201, and the limiting plate 202 is entirely inside the cabinet 100. The limiting plate 202 is partially wrapped around the vertical part on one side of the functional frame 102. The push plate 203 is integrally formed at the other end of the limiting plate 201, and the push plate 203 abuts against the snap-fit ​​part.

[0019] In this embodiment, the snap-fit ​​component includes a bracing plate 204, a snap-fit ​​plate 205, and a torsion spring; The diagonal brace 204 is fixed on the rear surface of the cabinet 100, while the card plate 205 is inclined between the push plate 203 and the inner side of the vertical part on the other side of the functional frame 102. A shaft is movably passed through the middle of the card plate 205. The shaft is fixed to the inner surface of the cabinet 100. The two ends of the torsion spring are respectively fixed between the diagonal brace 204 and the card plate 205. In its natural state, the torsion spring pushes the top of the card plate 205 toward the inner wall of the functional frame 102. The bottom of the push plate 203 abuts against the bottom of the card plate 205; After the various data modules are installed on the functional frame 102, push the functional frame 102 into the cabinet 100. Then, pull the pull plate 200 away from the outer wall of the cabinet 100. At this time, the pull plate 200 will drive the limiting plate 201 and the limiting plate 202 to move towards one side of the functional frame 102 until the limiting plate 202 clamps onto the vertical part of one side of the functional frame 102. At this time, the limiting plate 201 limits the horizontal push-in position of one side of the functional frame 102. At the same time, the push plate 203 no longer squeezes the clamping plate 20. 5. At this time, the torsion spring springs outward from the compressed state, so that the top of the card plate 205 is engaged with the other side of the functional frame 102. The bottom of the card plate 205 is always in contact with the push plate 203. Conversely, when maintenance is required, the pull plate 200 is pushed towards the cabinet 100, thereby causing the limit plate 202 to separate from one side of the functional frame 102. The push plate 203 presses the bottom of the card plate 205, so that the top of the card plate 205 rotates out from the inner wall of the vertical part of the other side of the functional frame 102, and at the same time, the torsion spring is compressed.

[0020] In this embodiment, a slot 104 is provided on the inner wall of the vertical part on the other side of the functional frame 102. The top of the card plate 205 is inserted into the slot 104. The height of the slot 104 is greater than or equal to the path that the card plate 205 travels when rotating, thereby ensuring that the card plate 205 can rotate normally and will not be blocked by the slot 104. At the same time, the engagement between the slot 104 and the card plate 205 can ensure that the card plate 205 limits the position of the functional frame 102.

[0021] In this embodiment, angle steel 103 is also fixed at the four corners inside the cabinet 100. The four corners of the functional frame 102 slide against the inside of the angle steel 103. The angle steel 103 enhances the strength of the cabinet 100 and can also serve as a sliding track for the functional frame 102.

[0022] In this embodiment, a slot 206 is also provided in the middle of the inner side of the pull plate 200, and the adjusting member is inserted into the slot 206.

[0023] In this embodiment, the adjusting component is a limiting block 300. The limiting block 300 protrudes obliquely from its middle to one end, forming a pressing surface 301. The other end of the limiting block 300 forms a limiting part 302. The highest point of the protruding pressing surface 301 and the height of the limiting part 302 are both greater than the inner width of the slot 206. By pushing the limiting block 300, the pressing surface 301 abuts against the slot 206, thereby achieving the desired position of the pull plate 200 and the cabinet 100. The limiting plate 202 and the card plate 205 limit the functional frame 102. During the initial installation and later maintenance, the limiting part 302 is pushed towards the pull plate 200. At this time, the concave and flat position of the middle part of the limiting block 300 moves into the card slot 206 and will not abut against the card slot 206. Then, the pull plate 200 can be pushed towards the cabinet 100. The limiting part 302 is set to prevent the limiting block 300 from falling off as a whole.

[0024] The present invention also discloses an online flue gas detection system for natural gas power plants, including an online detection device and a main control platform. The online detection device is connected to the main control platform via a combination of wired and wireless means. The online detection equipment has multiple data modules, including a gaseous pollutant monitoring unit, a particulate matter concentration receiving module, and a flue gas parameter acquisition module. This data module is connected to all the sensors that detect the flue gas. An alarm module is installed on the main control platform. This alarm module receives detection signals from the online detection equipment and issues an alarm when the data reaches the threshold set by the main control platform.

[0025] Although embodiments of the invention have been shown and described (see the detailed description above), 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online flue gas monitoring device for a natural gas power plant, comprising: The cabinet (100) has a cabinet door (101) connected to its front surface by hinges. Its features are: The cabinet (100) is provided with a pull-out functional frame (102) inside, and a limiting component is also provided at the rear of the cabinet (100). The limiting component is composed of a limiting member and a snap-fit ​​member. The limiting member partially encloses and limits one side of the functional frame (102), while the snap-fit ​​member snaps into the inner wall of the other side of the functional frame (102). One end of the limiting component is located on the outer side of the cabinet (100). An adjusting component is also provided between the limiting component and the cabinet (100). The adjusting component limits and stops the position of the limiting component in a specified position.

2. The online flue gas monitoring device for natural gas power plants according to claim 1, characterized in that: The limiting component includes a limiting plate (201), a limiting plate (202), and a pushing plate (203); At least two limiting plates (201) are provided, and one end of each limiting plate (201) extends through to the outside of the cabinet (100). A pull plate (200) is also fixed at the end of the limiting plate (201) that extends outside the cabinet (100). The limiting plate (202) is fixed on the front surface of the limiting plate (201), and the limiting plate (202) is entirely inside the cabinet (100). The limiting plate (202) is partially wrapped around the vertical part on one side of the functional frame (102). The push plate (203) is integrally formed at the other end of the limiting plate (201), and the push plate (203) abuts against the snap-fit ​​component.

3. The online flue gas detection device for a natural gas power plant according to claim 2, characterized in that: The snap-fit ​​component includes a bracing plate (204), a snap-fit ​​plate (205), and a torsion spring; The diagonal bracing plate (204) is fixed on the rear surface of the cabinet (100), while the card plate (205) is inclined between the push plate (203) and the inner side of the vertical part on the other side of the functional frame (102); The card plate (205) has a shaft that moves through the middle. The shaft is fixed to the inner surface of the cabinet (100). The two ends of the torsion spring are respectively fixed between the diagonal brace (204) and the card plate (205). In its natural state, the torsion spring pushes the top of the card plate (205) toward the inner wall of the functional frame (102). The push plate (203) abuts against the bottom of the card plate (205).

4. The online flue gas detection device for a natural gas power plant according to claim 3, characterized in that: A slot (104) is provided on the inner wall of the vertical part on the other side of the functional frame (102). The top of the card plate (205) is inserted into the slot (104). The height of the slot (104) is greater than or equal to the path that the card plate (205) passes through when it rotates.

5. The online flue gas detection device for a natural gas power plant according to claim 4, characterized in that: Angle steel (103) is also fixed at the four corners inside the cabinet (100), and the four corners of the functional frame (102) slide against the inside of the angle steel (103).

6. The online flue gas detection device for natural gas power plants according to claim 1, characterized in that: The inner side of the pull plate (200) is also provided with a slot (206), and the adjusting member is inserted into the slot (206).

7. The online flue gas detection device for a natural gas power plant according to claim 6, characterized in that: The adjusting member is a limiting block (300). The middle part of the limiting block (300) protrudes at one end and forms a pressing surface (301). The other end of the limiting block (300) forms a limiting part (302). The highest position of the protruding pressing surface (301) and the height of the limiting part (302) are both greater than the inner width of the slot (206).

8. An online flue gas monitoring system for a natural gas power plant, comprising the online monitoring equipment as described in any one of claims 1 to 7, characterized in that: It also includes the main control platform, and the online testing equipment is connected to the main control platform through a combination of wired and wireless methods; The online detection equipment has multiple data modules, including a gaseous pollutant monitoring unit, a particulate matter concentration receiving module, and a flue gas parameter acquisition module. This data module is connected to all the sensors that detect the flue gas. An alarm module is installed on the main control platform. This alarm module receives detection signals from the online detection equipment and issues an alarm when the data reaches the threshold set by the main control platform.

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