A smoke humidity monitoring device for thermal power unit

Abstract

The present invention relates to the technical field of flue gas humidity monitoring, and in particular to a flue gas humidity monitoring device for a thermal power unit, comprising a monitoring channel and a blocking member arranged in the monitoring channel, wherein the blocking member is provided with an expansion mechanism, and further comprises a pushing member rotatably arranged on the blocking member, wherein a monitoring mechanism is slidably arranged in the blocking member; the blocking member comprises a sealing plug, an insertion hole arranged in the sealing plug, and further comprises a receiving groove arranged in the sealing plug; the expansion mechanism comprises an upper slide plate and a lower slide plate slidably arranged in the receiving groove, and two toggle rods symmetrically arranged and slidably arranged on the upper slide plate and the lower slide plate; the pushing member comprises a rotating cover rotatably arranged on the sealing plug, and the upper slide plate and the lower slide plate are controlled to slide by rotating the rotating cover, so that the monitoring channel can be blocked and opened, which is convenient for inserting and withdrawing the monitoring mechanism, and the monitoring channel can be closed in time after the monitoring is completed to avoid leakage of flue gas.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas humidity monitoring, in particular to a flue gas humidity monitoring device for a thermal power unit. Background Art

[0002] Flue gas humidity is an important parameter that affects the accurate measurement of flue gas pollutant concentration and emission flow. The exhaust channels of burners and boilers in power plants are usually equipped with multiple flue gas monitoring ports. By monitoring the flue gas humidity, workers can understand the combustion process and conditions.

[0003] The smoke monitoring port of the smoke exhaust channel is generally equipped with a humidity monitoring device at a fixed point. However, in actual application, the number of monitoring devices may be temporarily increased, the monitoring points may be increased, or the distribution of the humidity monitoring device may be changed. Temporary detection may also be performed through the smoke monitoring port to improve the accuracy of humidity monitoring.

[0004] Since unused smoke monitoring ports are generally in a closed state, when adding monitoring points, changing monitoring points, or conducting temporary inspections, the smoke monitoring ports need to be sealed in order to insert a smoke humidity detector. Usually, the smoke monitoring ports are sealed with flanges, which are not convenient when opened and closed. Therefore, a smoke humidity monitoring device for a thermal power unit is proposed. Summary of the invention

[0005] In view of the problem that the smoke monitoring port in the above or prior art is not convenient to open and close, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a device for monitoring the humidity of flue gas in a thermal power plant.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a smoke humidity monitoring device for a thermal power unit, comprising a monitoring channel and a sealing member arranged in the monitoring channel, an expansion mechanism being arranged in the sealing member, and a push member rotatably arranged on the sealing member, and a monitoring mechanism being slidably arranged in the sealing member; the sealing member comprises a sealing plug, an insertion hole arranged in the sealing plug, and a receiving groove arranged in the sealing plug; the expansion mechanism comprises an upper slide plate and a lower slide plate slidably arranged in the receiving groove, and two toggle rods symmetrically arranged and slidably arranged on the upper slide plate and the lower slide plate; the push member comprises a rotating cover rotatably arranged on the sealing plug, a push groove arranged on the rotating cover, and a connecting screw arranged on the rotating cover, and the center of the push groove deviates from the axis of the rotating cover; the monitoring mechanism comprises a protective cover slidably arranged in the insertion hole, and a humidity detector arranged in the protective cover.

[0008] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, wherein: an upper through hole is provided on the upper slide plate, and a lower through hole is provided on the lower slide plate; a sliding cavity is provided in the sealing plug, and the inner wall of the sliding cavity is slidably connected to the outer wall of the toggle rod.

[0009] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, the monitoring channel includes a fixed monitoring tube and a plug-in sleeve slidably arranged in the fixed monitoring tube, and a slot is arranged in the plug-in sleeve; an insert block is arranged on the outer wall of the sealing plug, and the outer wall of the insert block is slidably connected to the inner wall of the slot.

[0010] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, wherein: an upper movable groove is provided on the upper slide plate, and a lower movable groove is provided on the lower slide plate; a No. 1 plug-in surface and a No. 2 plug-in surface are provided on the upper slide plate; a No. 3 plug-in surface and a No. 4 plug-in surface are provided on the lower slide plate; the two toggle rods both penetrate the upper slide plate and the lower slide plate, and are respectively slidably connected to the inner walls of the upper movable groove and the lower movable groove, and the upper movable groove and the lower movable groove are arranged on opposite sides; a positioning card groove is provided on the inner wall of the slot, and the positioning card groove is arranged corresponding to the upper slide plate and the lower slide plate.

[0011] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, a small-diameter arc groove is provided on the rotating cover, the small-diameter arc groove is connected to the push groove, and the center of the small-diameter arc groove is located at the axis of the rotating cover.

[0012] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, a large-diameter arc groove is provided on the rotating cover, the large-diameter arc groove is connected to the push groove, and the center of the large-diameter arc groove is located at the axis of the rotating cover.

[0013] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, the end of the toggle rod away from the upper slide plate is provided with a toggle end, and the end of the toggle rod close to the upper slide plate is provided with a sliding end.

[0014] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, wherein: a reset groove is provided on the rotating cover, an extrusion surface is provided at the connection between the reset groove and the large-diameter arc groove; and a spring is provided on the outer sleeve of the sliding end.

[0015] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, wherein: a resistance end face is provided in the plug-in sleeve; a resistance block is provided at the end of the sliding end; a limiting groove is provided on the sealing plug, an embedding groove is provided in the limiting groove, and the resistance block is arranged in the embedding groove.

[0016] As a preferred solution of the smoke humidity monitoring device for a thermal power unit of the present invention, it also includes a disassembly mechanism, which includes a connecting disk and a docking hole arranged on the connecting disk, the connecting disk is provided with a plug-in arc block, the plug-in arc block is provided with a guide surface, and also includes a handle arranged on the connecting disk.

[0017] The beneficial effects of the smoke humidity monitoring device for a thermal power unit of the present invention are as follows: the present invention controls the sliding of the upper slide plate and the lower slide plate by rotating the rotating cover, thereby causing the upper through hole and the lower through hole to be misaligned or aligned, thereby realizing the blocking and opening of the monitoring channel, facilitating the insertion and extraction of the monitoring mechanism, facilitating the addition or change of the monitoring points of the monitoring mechanism, and facilitating temporary detection. After the monitoring is completed, the monitoring channel can be closed in time to avoid smoke leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is the overall schematic diagram of the flue gas humidity monitoring device for thermal power units.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of a flue gas humidity monitoring device for a thermal power unit.

[0021] Figure 3 This is a schematic diagram of the internal structure of the flue gas humidity monitoring device of a thermal power unit.

[0022] Figure 4 This is a schematic diagram of the internal structure breakdown of the flue gas humidity monitoring device of a thermal power unit.

[0023] Figure 5 It is a structural schematic diagram of the expansion mechanism of the flue gas humidity monitoring device of a thermal power unit.

[0024] Figure 6 This is a schematic diagram of the structure of the pusher of the flue gas humidity monitoring device of a thermal power unit.

[0025] Figure 7 This is a schematic diagram of the planar structure of a pusher of a flue gas humidity monitoring device for a thermal power unit.

[0026] Figure 8 The diagram is a schematic diagram of the connection structure of the plugging member and the push member of the flue gas humidity monitoring device of a thermal power unit.

[0027] Fig. 9 The figure is a schematic diagram of the structure of the disassembly mechanism of the flue gas humidity monitoring device of a thermal power unit.

[0028] In the figure: 100, monitoring channel; 101, fixed monitoring tube; 102, plug-in sleeve; 103, slot; 104, positioning card slot; 105, abutting end face; 200, blocking member; 201, blocking plug; 201a, insertion hole; 201b, sliding cavity; 201c, limiting groove; 201d, embedding groove; 202, accommodating groove; 203, plug block; 300, expansion mechanism; 301, upper slide plate; 301a, upper through hole; 301b, upper movable groove; 301c, No. 1 plug-in surface; 301d, No. 2 plug-in surface; 302, lower slide plate; 302a, lower through hole; 302b, lower movable groove; 3 02c, plug-in surface No. 3; 302d, plug-in surface No. 4; 303, toggle rod; 303a, toggle end; 303b, sliding end; 303c, resistance block; 304, spring; 400, push piece; 401, rotating cover; 402, push groove; 402a, small-diameter arc groove; 403, large-diameter arc groove; 404, reset groove; 404a, extrusion surface; 405, connecting screw; 500, monitoring mechanism; 501, protective cover; 502, humidity detector; 600, disassembly mechanism; 601, connecting plate; 601a, docking hole; 602, plug-in arc block; 602a, guide surface; 603, handle. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1, reference Figures 1 to 8, which is the first embodiment of the present invention, provides a smoke humidity monitoring device for a thermal power unit, including a monitoring channel 100, and a blocking member 200 arranged in the monitoring channel 100, an expansion mechanism 300 is arranged in the blocking member 200, and also includes a pushing member 400 rotatably arranged on the blocking member 200, and a monitoring mechanism 500 is slidably arranged in the blocking member 200; in this embodiment, the monitoring channel 100 is arranged on the smoke exhaust channel and is connected to the flue.

[0033] Specifically, the sealing member 200 includes a sealing plug 201, an insertion hole 201a provided in the sealing plug 201, and also includes a receiving groove 202 provided in the sealing plug 201; in the present embodiment, the insertion hole 201a and the receiving groove 202 are connected, the insertion hole 201a and the receiving groove 202 both pass through the sealing plug 201, the insertion hole 201a and the receiving groove 202 are vertically distributed, and the insertion hole 201a is centrally provided in the sealing plug 201.

[0034] Specifically, the expansion mechanism 300 includes an upper slide plate 301 and a lower slide plate 302 that are slidably disposed in the receiving groove 202, and two toggle rods 303 that are symmetrically arranged and slidably disposed on the upper slide plate 301 and the lower slide plate 302; in the present embodiment, the upper slide plate 301 and the lower slide plate 302 have the same structural shape, the upper slide plate 301 and the lower slide plate 302 fit each other, the upper slide plate 301 and the lower slide plate 302 are both slidably disposed in the receiving groove 202, and the thickness of the upper slide plate 301 and the lower slide plate 302 is one half of the width of the receiving groove 202.

[0035] Specifically, the push member 400 includes a rotating cover 401 rotatably arranged on the sealing plug 201, and a push groove 402 arranged on the rotating cover 401, and also includes a connecting screw 405 arranged on the rotating cover 401; in the present embodiment, two push grooves 402 are arranged, and the end of the toggle rod 303 is slidably arranged in the push groove 402, and the center of the push groove 402 deviates from the axis of the rotating cover 401. When the rotating cover 401 rotates, the push groove 402 can push the toggle rod 303 to expand away or contract closer, thereby controlling the opening and closing of the upper slide 301 and the lower slide 302.

[0036] Specifically, the monitoring mechanism 500 includes a protective cover 501 slidably disposed in the insertion hole 201a, and a humidity detector 502 disposed in the protective cover 501. In this embodiment, the outer wall diameter of the protective cover 501 matches the inner wall diameter of the insertion hole 201a, and the protective cover 501 is used to protect the surface of the humidity detector 502.

[0037] Specifically, an upper through hole 301a is provided on the upper slide plate 301, and a lower through hole 302a is provided on the lower slide plate 302; a sliding cavity 201b is provided in the sealing plug 201, and the inner wall of the sliding cavity 201b is slidably connected to the outer wall of the toggle rod 303. In this embodiment, the inner walls of the upper through hole 301a, the lower through hole 302a, and the insertion hole 201a have the same diameter, and the setting of the sliding cavity 201b enables the toggle rod 303 to slide and expand away or contract and approach.

[0038] In the initial state, the end of the toggle rod 303 is located at one end of the push slot 402 close to the axis of the rotating cover 401. At this time, the distance between the two toggle rods 303 is the smallest, and the upper through hole 301a and the lower through hole 302a are staggered. At this time, the insertion hole 201a on the blocking member 200 is in a blocked state, and the monitoring channel 100 can be closed.

[0039] When smoke monitoring is required, by rotating the rotating cover 401, the two toggle rods 303 will move away from each other under the guidance of the push groove 402, and the distance between them will increase. The toggle rods 303 slide in the sliding cavity 201b. Due to the mutual movement of the toggle rods 303, the upper slide plate 301 and the lower slide plate 302 will be pushed to slide in an offset manner. The upper through hole 301a and the lower through hole 302a are aligned by sliding the upper slide plate 301 and the lower slide plate 302. At this time, the insertion hole 201a on the sealing member 200 can be opened, and the protective cover 501 can be inserted into the sealing member 200 through the insertion hole 201a, and the humidity detector 502 is extended into the interior of the monitoring channel 100. The smoke is monitored by the humidity detector 502, and the setting of the connecting screw 405 facilitates the connection and fixation of the end of the protective cover 501.

[0040] When the humidity detector 502 needs to be removed, the protective cover 501 is first pulled out, and then the upper slide plate 301 and the lower slide plate 302 are controlled to slide by rotating the rotating cover 401, so that the upper through hole 301a and the lower through hole 302a are misaligned to block the channel.

[0041] In summary, by rotating the rotating cover 401 to control the sliding of the upper slide plate 301 and the lower slide plate 302, so that the upper through hole 301a and the lower through hole 302a are misaligned or aligned, the monitoring channel 100 can be blocked and opened, which is convenient for inserting and withdrawing the monitoring mechanism 500, adding or changing the monitoring points of the monitoring mechanism 500, and also convenient for temporary detection. After the monitoring is completed, the monitoring channel 100 can be closed in time to avoid smoke leakage.

[0042] Example 2, reference Figure 1 to Figure 8, which is the second embodiment of the present invention. Different from the previous embodiment, the monitoring channel 100 includes a fixed monitoring tube 101 and a plug-in sleeve 102 slidably arranged in the fixed monitoring tube 101, and a slot 103 is arranged in the plug-in sleeve 102; in this embodiment, the fixed monitoring tube 101 is arranged on the smoke monitoring port of the smoke exhaust channel, and the fixed monitoring tube 101 and the plug-in sleeve 102 are plug-connected and locked and fixed by screws, and there are two slots 103, which are symmetrically arranged on the inner wall of the plug-in sleeve 102.

[0043] Preferably, an insert block 203 is provided on the outer wall of the sealing plug 201 , and the outer wall of the insert block 203 is slidably connected to the inner wall of the slot 103 . In this embodiment, the insert block 203 and the slot 103 are arranged in a one-to-one correspondence, and the insert block 203 can limit the sealing plug 201 .

[0044] Specifically, the upper slide plate 301 is provided with an upper movable groove 301b, and the lower slide plate 302 is provided with a lower movable groove 302b; the upper slide plate 301 is provided with a No. 1 plug-in surface 301c and a No. 2 plug-in surface 301d; the lower slide plate 302 is provided with a No. 3 plug-in surface 302c and a No. 4 plug-in surface 302d; it should be noted that the two toggle rods 303 both pass through the upper slide plate 301 and the lower slide plate 302, and are respectively slidably connected to the inner walls of the upper movable groove 301b and the lower movable groove 302b, the upper movable groove 301b and the lower movable groove 302b are arranged on opposite sides, and can be used for sliding between the upper slide plate 301 and the lower slide plate 302 through the upper movable groove 301b and the lower movable groove 302b.

[0045] The inner wall of the slot 103 is provided with a positioning slot 104 . In this embodiment, the inner wall of the slot 103 is evenly provided with a plurality of positioning slots 104 distributed at equal intervals. The positioning slots 104 are provided corresponding to the upper slide plate 301 and the lower slide plate 302 .

[0046] In the initial state, the end of the toggle rod 303 is located at one end of the push slot 402 close to the axis of the rotating cover 401. At this time, the distance between the two toggle rods 303 is the smallest, and the upper through hole 301a and the lower through hole 302a are staggered. At this time, the insertion hole 201a on the blocking member 200 is in a blocked state, and the monitoring channel 100 can be closed. In addition, the No. 2 plug-in surface 301d and the No. 4 plug-in surface 302d are both stuck in the positioning slot 104, which can fix the blocking member 200.

[0047] When the rotating cover 401 is rotated, the two toggle rods 303 move away from each other, and the upper slide plate 301 and the lower slide plate 302 slide, which will cause the second plug-in surface 301d and the fourth plug-in surface 302d to gradually move away from the positioning slot 104, while the first plug-in surface 301c and the third plug-in surface 302c will gradually approach the positioning slot 104. When the second plug-in surface 301d and the fourth plug-in surface 302d just break away from the positioning slot 104, the first plug-in surface 301c and the third plug-in surface 302c are about to enter the positioning slot 104. At this time, the blocking member 200 can be pushed or pulled to make the position of the blocking member 201 move. After the adjustment is completed, the rotating cover 401 can be rotated to make the end of the toggle rod 303 move to the end of the push slot 402 away from the axis of the rotating cover 401. As the two toggle rods 303 continue to move away from each other, the No. 1 plug-in surface 301c and the No. 3 plug-in surface 302c will eventually be inserted into the positioning slot 104 to form a snap-fit ​​fixation. Therefore, when the monitoring channel 100 is opened or closed, the blocking member 200 is in a fixed state. At the same time, since the plug-in sleeve 102 can wrap the outside of the monitoring mechanism 500, the monitoring mechanism 500 can also be protected.

[0048] It should be noted that the first plug-in surface 301c, the second plug-in surface 301d, the third plug-in surface 302c, and the fourth plug-in surface 302d are all inclined surfaces, which can facilitate the ends of the upper slide plate 301 and the lower slide plate 302 to be aligned with the positioning slot 104 when inserted into the positioning slot 104.

[0049] Furthermore, a small-diameter arc groove 402a is provided on the rotating cover 401, and the small-diameter arc groove 402a is connected to the push groove 402. Figure 7, the center of the small-diameter arc groove 402a is located at the axis of the rotating cover 401, the movement trajectory of the toggle rod 303 in the push groove 402 is s1, and the movement trajectory of the toggle rod 303 in the small-diameter arc groove 402a is s3. When the end of the toggle rod 303 is on the movement trajectory s3, since the center of the small-diameter arc groove 402a is located at the axis of the rotating cover 401, as long as the rotating cover 401 does not rotate, the upper slide 301 and the lower slide 302 will not be able to slip when subjected to force, that is, when the toggle rod 303 is located in the small-diameter arc groove 402a, the upper slide 301 and the lower slide 302 can be kept locked, thereby keeping the monitoring channel 100 closed. When the end of the movable rod 303 is on the motion trajectory s1, since the No. 1 plug-in surface 301c, the No. 2 plug-in surface 301d, the No. 3 plug-in surface 302c, and the No. 4 plug-in surface 302d are all inclined surfaces, when the upper slide plate 301 and the lower slide plate 302 are subjected to thrust or pulling force, the upper slide plate 301 and the lower slide plate 302 can be assisted to slide by the guidance of the inclined surface, thereby making the toggle rod 303 slide and push the rotating cover 401 to rotate, that is, reducing the difficulty of adjusting the position of the blocking member 200 so that the No. 1 plug-in surface 301c, the No. 2 plug-in surface 301d, the No. 3 plug-in surface 302c, and the No. 4 plug-in surface 302d are not engaged with the positioning slot 104.

[0050] Furthermore, a large-diameter arc groove 403 is provided on the rotating cover 401, and the large-diameter arc groove 403 is connected to the push groove 402. In the present embodiment, the movement trajectory of the toggle rod 303 in the large-diameter arc groove 403 is s2, and the center of the large-diameter arc groove 403 is located at the axis of the rotating cover 401. Therefore, the movement of the toggle rod 303 can be limited by the setting of the large-diameter arc groove 403. As long as the rotating cover 401 does not rotate, the upper slide plate 301 and the lower slide plate 302 will not be able to slip when subjected to force, that is, the monitoring channel 100 can be kept open. When the protective cover 501 is inserted, the slip of the upper slide plate 301 and the lower slide plate 302 caused by the force can be avoided, thereby preventing the upper through hole 301a and the lower through hole 302a from being misaligned, thereby ensuring the insertion of the protective cover 501.

[0051] Preferably, a toggle end 303a is provided at one end of the toggle rod 303 away from the upper slide 301, and a sliding end 303b is provided at one end of the toggle rod 303 close to the upper slide 301. In this embodiment, the toggle end 303a is slidably disposed in the push groove 402, and the sliding end 303b is slidably disposed in the upper movable groove 301b or the lower movable groove 302b.

[0052] Preferably, a reset groove 404 is provided on the rotating cover 401, and an extrusion surface 404a is provided at the connection between the reset groove 404 and the large-diameter arc groove 403, and the reset groove 404 is connected to the push groove 402; Figure 6 The extrusion surface 404a is an arc-shaped surface, which is used to connect the reset groove 404 with different depths and the large-diameter arc groove 403.

[0053] Specifically, a spring 304 is sleeved on the outside of the sliding end 303 b , and the elastic force of the spring 304 enables the toggle rod 303 to have a movement tendency to slide toward the rotating cover 401 , and the end of the toggle end 303 a is chamfered.

[0054] When controlling the toggle end 303a to return from the large-diameter arc groove 403 to the push groove 402, the rotating cover 401 can be rotated so that the end of the toggle end 303a contacts the extrusion surface 404a. Due to the extrusion of the extrusion surface 404a, the spring 304 will be compressed, and the toggle rod 303 will slide along the axial direction of the sealing plug 201. As the rotation angle increases, the toggle end 303a will enter the reset groove 404 and return to the push groove 402 through the guidance of the reset groove 404. After entering the push groove 402, the spring 304 restores its deformation, and the toggle rod 303 slides and resets.

[0055] The rest of the structure is the same as that of Example 1.

[0056] Example 3, reference Figure 1 to Figure 9 , which is the third embodiment of the present invention. Different from the previous embodiment, a resistance end surface 105 is provided in the plug-in sleeve 102; a resistance block 303c is provided at the end of the sliding end 303b; a limiting groove 201c is provided on the sealing plug 201, and an embedding groove 201d is provided in the limiting groove 201c. In this embodiment, the resistance block 303c is arranged in the embedding groove 201d.

[0057] It also includes a disassembly mechanism 600, which includes a connecting disk 601 and a docking hole 601a arranged on the connecting disk 601, a plug-in arc block 602 is arranged on the connecting disk 601, a guide surface 602a is arranged on the plug-in arc block 602, and also includes a handle 603 arranged on the connecting disk 601.

[0058] For monitoring points that do not need to be adjusted, the blocking member 200 can be controlled to move until the abutment block 303c abuts against the abutment end face 105. At this time, the rotating cover 401 is rotated to make the toggle end 303a move into the large-diameter arc groove 403 and insert the monitoring mechanism 500. During subsequent maintenance, the monitoring mechanism 500 can only be pulled out for maintenance. Since the abutment block 303c abuts against the abutment end face 105, the upper slide 301 and the lower slide 302 are in a state of being engaged with the positioning slot 104, the sliding end 303b cannot slide in the upper slide 301 and the lower slide 302 along the axial direction of the rotating cover 401, that is, it cannot pass. By rotating the rotating cover 401, the toggle end 303a enters the reset groove 404, thereby preventing the blocking member 200 from being adjusted in position and removed. When the blocking member 200 needs to be removed or the position of the blocking member 200 needs to be adjusted, the disassembly mechanism 600 is required to assist in disassembly. First, the monitoring mechanism 500 is pulled out, and the plug-in arc block 602 is inserted into the large-diameter arc groove 403. The docking hole 601a and the connecting screw 405 are plugged in. The handle 603 is rotated, and the toggle end 303a is guided by the guide surface 602a to slide into the push groove 402 for reset. After entering the push groove 402, the position of the blocking member 200 can be adjusted again.

[0059] The rest of the structure is the same as that of Example 2.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A smoke humidity monitoring device for a thermal power unit, characterized in that: It comprises a monitoring channel (100), and a blocking member (200) disposed in the monitoring channel (100), wherein an expansion mechanism (300) is disposed in the blocking member (200), and further comprises a pushing member (400) rotatably disposed on the blocking member (200), wherein a monitoring mechanism (500) is slidably disposed in the blocking member (200); The sealing member (200) comprises a sealing plug (201), an insertion hole (201a) provided in the sealing plug (201), and a receiving groove (202) provided in the sealing plug (201); The expansion mechanism (300) comprises an upper slide plate (301) and a lower slide plate (302) slidably disposed in the receiving groove (202), and two toggle rods (303) symmetrically disposed and slidably disposed on the upper slide plate (301) and the lower slide plate (302); The push member (400) comprises a rotating cover (401) rotatably arranged on the sealing plug (201), and a push groove (402) arranged on the rotating cover (401), and also comprises a connecting screw (405) arranged on the rotating cover (401), wherein the center of the push groove (402) deviates from the axis of the rotating cover (401); The monitoring mechanism (500) comprises a protective sleeve (501) slidably disposed in the insertion hole (201a), and a humidity detector (502) disposed in the protective sleeve (501); The upper slide plate (301) is provided with an upper through hole (301a), and the lower slide plate (302) is provided with a lower through hole (302a); A sliding cavity (201b) is provided in the sealing plug (201), and an inner wall of the sliding cavity (201b) is slidably connected to an outer wall of the toggle rod (303); When the upper through hole (301a) and the lower through hole (302a) are arranged in a staggered manner, the insertion hole (201a) on the blocking member (200) is in a blocked state, and the monitoring channel (100) can be closed; The upper through hole (301a) and the lower through hole (302a) are aligned by sliding the upper slide plate (301) and the lower slide plate (302), so that the insertion hole (201a) on the blocking member (200) can be opened; The monitoring channel (100) comprises a fixed monitoring tube (101), and a plug-in sleeve (102) slidably disposed in the fixed monitoring tube (101), wherein a slot (103) is disposed in the plug-in sleeve (102); An insert block (203) is provided on the outer wall of the sealing plug (201), and the outer wall of the insert block (203) is slidably connected to the inner wall of the slot (103); The upper slide plate (301) is provided with an upper movable groove (301b), and the lower slide plate (302) is provided with a lower movable groove (302b); The upper slide plate (301) is provided with a first plug-in surface (301c) and a second plug-in surface (301d); The lower slide plate (302) is provided with a third plug-in surface (302c) and a fourth plug-in surface (302d); The two toggle rods (303) both penetrate the upper slide plate (301) and the lower slide plate (302), and are respectively slidably connected to the inner walls of the upper movable groove (301b) and the lower movable groove (302b), and the upper movable groove (301b) and the lower movable groove (302b) are arranged on opposite sides; The inner wall of the slot (103) is provided with a positioning slot (104), and the positioning slot (104) is arranged corresponding to the upper slide plate (301) and the lower slide plate (302); The rotating cover (401) is provided with a small-diameter arc groove (402a), the small-diameter arc groove (402a) is connected to the push groove (402), and the center of the small-diameter arc groove (402a) is located at the axis of the rotating cover (401); The rotating cover (401) is provided with a large-diameter arc groove (403), the large-diameter arc groove (403) is connected to the push groove (402), and the center of the large-diameter arc groove (403) is located at the axis of the rotating cover (401).

2. The device for monitoring flue gas humidity of a thermal power plant as claimed in claim 1, characterized in that: An end of the toggle rod (303) away from the upper slide plate (301) is provided with a toggle end (303a), and an end of the toggle rod (303) close to the upper slide plate (301) is provided with a sliding end (303b).

3. The device for monitoring flue gas humidity of a thermal power plant as claimed in claim 2, characterized in that: The rotating cover (401) is provided with a reset groove (404), and a pressing surface (404a) is provided at the connection between the reset groove (404) and the large-diameter arc groove (403); The outer sleeve of the sliding end (303b) is provided with a spring (304).

4. The device for monitoring flue gas humidity of a thermal power plant as claimed in claim 3, characterized in that: The plug-in sleeve (102) is provided with a contact end surface (105); An abutment block (303c) is provided at the end of the sliding end (303b); The sealing plug (201) is provided with a limiting groove (201c), an embedding groove (201d) is provided in the limiting groove (201c), and the abutment block (303c) is provided in the embedding groove (201d).

5. The device for monitoring flue gas humidity of a thermal power plant as claimed in claim 4, characterized in that: It also includes a disassembly mechanism (600), which includes a connection disk (601) and a docking hole (601a) provided on the connection disk (601), a plug-in arc block (602) provided on the connection disk (601), a guide surface (602a) provided on the plug-in arc block (602), and a handle (603) provided on the connection disk (601).

Images