Adjustable flue gas flow rate and flow velocity detector

Abstract

The utility model relates to the technical field of flue gas detection, and discloses an adjustable flue gas flow rate and flow velocity detector, which comprises a detector body, a static pressure sensor, a dynamic pressure sensor, a cleaning assembly and a connecting line, the outer surface of the dynamic pressure sensor is fixedly sleeved with a curved tube, and one end of the curved tube is fixedly sleeved with a distribution sleeve. When the threads move downwards, the movable plug plate is driven to extrude internal hydraulic oil, the internal hydraulic pressure of the hydraulic oil is increased, part of the hydraulic oil further enters the sliding groove along the distribution sleeve, the communicating curved groove and the side face opening, the sealing block is pushed to move along the interior of the sliding groove, the through area of the inlet is gradually reduced, the first spring is stretched, and adjustment is completed; in practice, when the dynamic pressure sensor is installed in a flue gas pipeline, the flow and flow velocity of flue gas to be detected entering the curved pipe can be conveniently and effectively controlled from the outer side, the adjusting range is widened according to the actual situation, the device adapts to the most stable detection, the actual adjustment is simple, and the adjustment stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke detection, and more specifically, to an adjustable smoke flow rate detector. Background Art

[0002] The flue gas velocity meter is an instrument specially used to measure the flue gas velocity in industrial emission pipes. It works by using the suction method and differential pressure measurement principle. When air is sucked into the flue gas velocity meter, it flows through a curved pipe through the measuring hole. The differential pressure sensor measures the differential pressure, and the flow rate of the flue gas can be obtained.

[0003] The flow velocity detector in the prior art is equipped with a static pressure sensor located upstream, a dynamic pressure sensor located downstream, and a complete pipeline on one side of the dynamic pressure sensor during use to complete the flow velocity measurement. It is affected by the flue gas flow and the flow diameter at the dynamic pressure sensor. Different diameters have different flow and flow rate controls. However, different opening and closing ranges affect the measurement results of the differential pressure sensor. The current opening and closing control is difficult. For flue gas detection in the flue gas flow duct, it is difficult to achieve convenient dynamic pressure adjustment, and the use effect is not good. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an adjustable flue gas flow rate detector, which has the advantages of convenient adjustment and complete dirt removal on the surface of the dynamic pressure sensor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable flue gas flow rate detector, comprising a detector body, a static pressure sensor, a dynamic pressure sensor, a cleaning assembly and a connecting line, the outer surface of the dynamic pressure sensor is fixedly sleeved with a curved tube, one end of the curved tube is fixedly sleeved with a distribution sleeve, the other end of the curved tube is internally fixedly sleeved with a mounting disk, the top surface of the mounting disk is provided with an entry port, the internal sliding sleeve of the mounting disk is provided with a sealing block, the interior of the mounting disk is fixedly connected with a spring 1, one end of the spring 1 is fixedly connected to the sealing block, a connecting curved groove is provided in the inner wall of the curved tube, the two ends of the connecting curved groove are respectively connected to the mounting disk and the distribution sleeve, and the top of the distribution sleeve is fixedly connected with an adjustment assembly.

[0006] As a preferred technical solution of the utility model, connecting wires are electrically connected between the static pressure sensor and the detector body, and between the dynamic pressure sensor and the detector body. A bypass hole is opened inside the dynamic pressure sensor, and a bypass pipe is provided at the outer end of the dynamic pressure sensor, and the bypass pipe is connected to the bypass hole.

[0007] As a preferred technical solution of the utility model, the entrance includes a middle circular hole and an outer square opening, the outer square opening is distributed around the outside of the middle circular hole and is connected to the middle circular hole, a slide groove is opened inside the mounting plate, a side opening is opened on the outer side of the mounting plate, the side opening is connected to the slide groove, and the slide groove is connected to the outer square opening.

[0008] As a preferred technical solution of the utility model, the sealing block is movably sleeved in the slide groove, and the side opening is connected to the connecting curved groove.

[0009] As a preferred technical solution of the utility model, the adjustment assembly includes a fixed cylinder, a movable plug plate, an adjustment rod and a bottom sleeve, the bottom sleeve is fixedly connected to the bottom surface of the fixed cylinder, the bottom sleeve is fixedly connected to the top of the distribution sleeve, the movable plug plate is movably sleeved in the fixed cylinder, the adjustment rod is threadedly sleeved on the top of the fixed cylinder, the lower end of the adjustment rod is fixedly connected to the movable plug plate, and a sealing ring is provided on the outer surface of the movable plug plate.

[0010] As a preferred technical solution of the utility model, the cleaning assembly includes a mounting ring, a cleaning ring, a push rod, a fixed ring, a second spring, a connecting pipe and a solenoid valve. The mounting ring is sleeved on the outside of the dynamic pressure sensor, the cleaning ring is fixedly sleeved on the inner wall of the mounting ring, the push rod is fixedly connected to the mounting ring, the second spring is fixedly connected between the fixed ring and the push rod, one end of the connecting pipe is fixedly connected to the fixed ring, the upper end of the connecting pipe is fixedly sleeved on the inside of the distribution sleeve, and the solenoid valve is located in the distribution sleeve and is fixedly connected to the connecting pipe.

[0011] As a preferred technical solution of the utility model, a sleeve hole is opened inside the dynamic pressure sensor, the push rod is movably sleeved in the sleeve hole, and the fixing ring is fixedly sleeved in the sleeve hole.

[0012] As a preferred technical solution of the utility model, a limit plate is fixedly connected to the interior of the curved pipe, and the limit plate is located on the outer side of the inner end of the dynamic pressure sensor.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model rotates the adjustment rod in the adjustment component along the outside of the flue gas pipeline. When the thread moves downward, it drives the movable plug plate to squeeze the internal hydraulic oil. The internal hydraulic pressure of the hydraulic oil rises, and part of the hydraulic oil further flows into the slide groove along the distribution sleeve, the connecting curved groove, and the side port, pushing the sealing block to move along the inside of the slide groove, so that the through area of ​​the entrance port is gradually reduced. The adjustment is completed as soon as the spring is stretched. When the dynamic pressure sensor is actually installed in the flue gas pipeline, the flow rate and flow velocity control of the flue gas to be measured entering the curved pipe can be conveniently and effectively achieved from the outside. The adjustment range is increased according to the actual situation to adapt to the most stable detection. The actual adjustment is simple and the adjustment stability is good.

[0015] 2. The utility model starts the solenoid valve so that the connecting pipe connects the sleeve hole and the distribution sleeve, and the operating adjustment rod is rotated downward for adjustment. Part of the hydraulic pressure is passed into the sleeve hole through the connecting pipe, so that the push rod moves laterally, driving the mounting ring and the cleaning ring to move. The cleaning ring rubs and cleans along the outer side of the dynamic pressure sensor. By reusing the adjustment component, the outer side of the dynamic pressure sensor can be quickly cleaned in the connected state without stopping the machine or disassembling it. The cleaning is fast and the cleaning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the curved pipe and the distribution sleeve of the utility model;

[0018] Figure 3 It is an exploded schematic diagram of the installation disk of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the installation disk of the utility model;

[0020] Figure 5 This is a schematic diagram of fixing the distribution sleeve and the dynamic pressure sensor of the utility model;

[0021] Figure 6 It is an exploded schematic diagram of the cleaning component and the dynamic pressure sensor of the utility model;

[0022] Figure 7 It is a cross-sectional schematic diagram of the adjustment component of the utility model;

[0023] Figure 8 It is an exploded schematic diagram of the cleaning component of the utility model.

[0024] In the figure: 1. detector body; 2. static pressure sensor; 3. dynamic pressure sensor; 4. connecting line; 5. curved pipe; 6. distribution sleeve; 7. adjustment assembly; 71. fixed cylinder; 72. movable plug plate; 73. adjustment rod; 74. bottom sleeve; 8. mounting plate; 9. entrance; 10. side opening; 11. slide groove; 12. sealing block; 13. spring one; 14. connecting curved groove; 15. cleaning assembly; 151. mounting ring; 152. cleaning ring; 153. push rod; 154. fixed ring; 155. spring two; 156. connecting pipe; 157. solenoid valve; 16. sleeve hole; 17. bypass hole; 18. limit plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 8 As shown, the utility model provides an adjustable flue gas flow rate detector, including a detector body 1, a static pressure sensor 2, a dynamic pressure sensor 3, a cleaning component 15 and a connecting line 4, the outer surface of the dynamic pressure sensor 3 is fixedly sleeved with a curved tube 5, one end of the curved tube 5 is fixedly sleeved with a distribution sleeve 6, the other end of the curved tube 5 is internally fixedly sleeved with a mounting plate 8, the top surface of the mounting plate 8 is provided with an inlet 9, the interior of the mounting plate 8 is slidably sleeved with a sealing block 12, the interior of the mounting plate 8 is fixedly connected with a spring 13, one end of the spring 13 is fixedly connected to the sealing block 12, a connecting curved groove 14 is provided in the inner wall of the curved tube 5, the two ends of the connecting curved groove 14 are respectively connected to the mounting plate 8 and the distribution sleeve 6, the top of the distribution sleeve 6 is fixedly connected with an adjusting component 7, the static pressure sensor 2 and the dynamic pressure sensor 3 are both existing differential pressure speed detection mechanisms, and the specific model is HCCY100-04-IBBT Horswell micro differential pressure transmitter.

[0027] Among them, connecting wires 4 are electrically connected between the static pressure sensor 2 and the detector body 1, and between the dynamic pressure sensor 3 and the detector body 1. A bypass hole 17 is opened inside the dynamic pressure sensor 3, and a bypass pipe is provided at the outer end of the dynamic pressure sensor 3, and the bypass pipe is connected to the bypass hole 17.

[0028] The detected flue gas can be directly returned to the flue gas duct by utilizing the bypass hole 17 and the bypass pipe (not shown in the figure) to exhaust the flue gas.

[0029] Among them, the entrance 9 includes a middle circular hole and an outer square opening. The outer square opening is distributed around the outside of the middle circular hole and is connected to the middle circular hole. A slide groove 11 is opened inside the mounting plate 8, and a side opening 10 is opened on the outer side of the mounting plate 8. The side opening 10 is connected to the slide groove 11, and the slide groove 11 is connected to the outer square opening.

[0030] By utilizing the design of the inlet 9, the caliber adjustment is convenient, and the flow rate and flow velocity of the smoke entering the curved pipe 5 are controlled to ensure that the optimal detection state is met.

[0031] The sealing block 12 is movably sleeved in the slide groove 11 , and the side opening 10 is communicated with the connecting curved groove 14 .

[0032] By utilizing the sliding connection between the slide groove 11 and the sealing block 12, stable sliding control is maintained, and the opening area of ​​the inlet 9 is changed by the movement of the sealing block 12 to achieve adjustment control. A sealing ring is provided on the outer side of the sealing block 12 to avoid leakage.

[0033] Among them, the adjustment component 7 includes a fixed cylinder 71, a movable plug plate 72, an adjustment rod 73 and a bottom sleeve 74. The bottom sleeve 74 is fixedly connected to the bottom surface of the fixed cylinder 71, and the bottom sleeve 74 is fixedly connected to the top of the distribution sleeve 6. The movable plug plate 72 is movably sleeved in the fixed cylinder 71, and the adjustment rod 73 is threadedly sleeved on the top of the fixed cylinder 71. The lower end of the adjustment rod 73 is fixedly connected to the movable plug plate 72, and a sealing ring is sleeved on the outer surface of the movable plug plate 72.

[0034] By utilizing the regulating assembly 7 to realize hydraulic control, the flow regulation to be measured and the pushing of the cleaning assembly 15 are respectively completed, and the sliding sealing of the movable plug plate 72 is maintained by the sealing ring to avoid leakage and maintain dynamic sealing.

[0035] Among them, the cleaning component 15 includes a mounting ring 151, a cleaning ring 152, a push rod 153, a fixing ring 154, a second spring 155, a connecting pipe 156 and a solenoid valve 157. The mounting ring 151 is sleeved on the outside of the dynamic pressure sensor 3, the cleaning ring 152 is fixedly sleeved on the inner wall of the mounting ring 151, the push rod 153 is fixedly connected to the mounting ring 151, the second spring 155 is fixedly connected between the fixing ring 154 and the push rod 153, one end of the connecting pipe 156 is fixedly connected to the fixing ring 154, the upper end of the connecting pipe 156 is fixedly sleeved inside the distribution sleeve 6, the solenoid valve 157 is located in the distribution sleeve 6 and is fixedly connected to the connecting pipe 156, a sleeve hole 16 is opened inside the dynamic pressure sensor 3, the push rod 153 is movably sleeved in the sleeve hole 16, and the fixing ring 154 is fixedly sleeved in the sleeve hole 16.

[0036] By cleaning 15 is moved laterally, and the cleaning ring 152 is used to perform friction cleaning along the outer surface of the dynamic pressure sensor 3. A sealing ring is provided on the outer side of the push rod 153 to maintain dynamic sealing and avoid leakage.

[0037] The interior of the curved pipe 5 is fixedly connected with a limit plate 18 , and the limit plate 18 is located outside the inner end of the dynamic pressure sensor 3 .

[0038] The limiting plate 18 is used to limit the movement of the cleaning assembly 15 to prevent it from slipping out of the sleeve hole 16 .

[0039] The working principle and use process of the utility model are as follows: when adjustment is required, the adjusting rod 73 in the adjusting assembly 7 is rotated along the outer side of the flue gas pipeline, and the movable plug plate 72 is driven to squeeze the internal hydraulic oil when the thread moves downward. The internal hydraulic pressure of the hydraulic oil rises, and part of the hydraulic oil is further passed into the slide groove 11 along the distribution sleeve 6, the connecting groove 14, and the side port 10, pushing the sealing block 12 to move along the inside of the slide groove 11, so that the through area of ​​the inlet 9 is gradually reduced, and the spring 13 is stretched to complete the adjustment. When the adjusting rod 73 is rotated upward and reset, as the spring 13 elastically resets, the sealing block 12 moves and resets, and the inlet 9 gradually opens. When the dynamic pressure sensor 3 needs to be cleaned regularly, the solenoid valve 157 is started, so that the connecting pipe 156 connects the sleeve hole 16 and the distribution sleeve 6, and the operating adjusting rod 73 is rotated downward for adjustment, and part of the hydraulic pressure is passed into the sleeve hole 16 via the connecting pipe 156, so that the push rod 153 moves horizontally, driving the mounting ring 151 and the cleaning ring 152 to move, and the cleaning ring 152 rubs and cleans along the outer side of the dynamic pressure sensor 3.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable smoke flow rate detector, comprising a detector body (1), a static pressure sensor (2), a dynamic pressure sensor (3), a cleaning component (15) and a connecting line (4), characterized in that: The outer surface of the dynamic pressure sensor (3) is fixedly sleeved with a curved tube (5), one end of the curved tube (5) is fixedly sleeved with a distribution sleeve (6), the other end of the curved tube (5) is fixedly sleeved with a mounting plate (8), the top surface of the mounting plate (8) is provided with an inlet (9), the interior of the mounting plate (8) is slidably sleeved with a sealing block (12), the interior of the mounting plate (8) is fixedly connected with a spring 1 (13), one end of the spring 1 (13) is fixedly connected to the sealing block (12), the inner wall of the curved tube (5) is provided with a connecting curved groove (14), the two ends of the connecting curved groove (14) are respectively connected to the mounting plate (8) and the distribution sleeve (6), and the top of the distribution sleeve (6) is fixedly connected with an adjustment component (7).

2. The adjustable smoke flow rate detector according to claim 1, characterized in that: A connecting wire (4) is electrically connected between the static pressure sensor (2) and the detector body (1), and between the dynamic pressure sensor (3) and the detector body (1); a bypass hole (17) is provided inside the dynamic pressure sensor (3); a bypass pipe is provided at the outer end of the dynamic pressure sensor (3), and the bypass pipe is connected to the bypass hole (17).

3. The adjustable smoke flow rate detector according to claim 2 is characterized in that: The entrance opening (9) comprises a middle circular hole and an outer square opening, the outer square opening is distributed around the outer side of the middle circular hole and is connected to the middle circular hole, a slide groove (11) is provided inside the mounting plate (8), a side opening (10) is provided on the outer side surface of the mounting plate (8), the side opening (10) is connected to the slide groove (11), and the slide groove (11) is connected to the outer square opening.

4. The adjustable smoke flow rate detector according to claim 3 is characterized in that: The sealing block (12) is movably sleeved in the slide groove (11), and the side opening (10) is connected to the connecting curved groove (14).

5. The adjustable smoke flow rate detector according to claim 4 is characterized in that: The adjustment assembly (7) comprises a fixed cylinder (71), a movable plug plate (72), an adjustment rod (73) and a bottom sleeve (74); the bottom sleeve (74) is fixedly connected to the bottom surface of the fixed cylinder (71); the bottom sleeve (74) is fixedly connected to the top of the distribution sleeve (6); the movable plug plate (72) is movably sleeved in the fixed cylinder (71); the adjustment rod (73) is threadedly sleeved on the top of the fixed cylinder (71); the lower end of the adjustment rod (73) is fixedly connected to the movable plug plate (72); and a sealing ring is sleeved on the outer surface of the movable plug plate (72).

6. The adjustable smoke flow rate detector according to claim 5, characterized in that: The cleaning assembly (15) comprises a mounting ring (151), a cleaning ring (152), a push rod (153), a fixing ring (154), a second spring (155), a connecting pipe (156) and a solenoid valve (157); the mounting ring (151) is sleeved on the outer side of the dynamic pressure sensor (3); the cleaning ring (152) is fixedly sleeved on the inner wall of the mounting ring (151); the push rod (153) is fixedly connected to the mounting ring (151); the second spring (155) is fixedly connected between the fixing ring (154) and the push rod (153); one end of the connecting pipe (156) is fixedly connected to the fixing ring (154); the upper end of the connecting pipe (156) is fixedly sleeved inside the distribution sleeve (6); and the solenoid valve (157) is located in the distribution sleeve (6) and is fixedly connected to the connecting pipe (156).

7. The adjustable smoke flow rate detector according to claim 6, characterized in that: A sleeve hole (16) is provided inside the dynamic pressure sensor (3), the push rod (153) is movably sleeved in the sleeve hole (16), and the fixing ring (154) is fixedly sleeved in the sleeve hole (16).

8. The adjustable smoke flow rate detector according to claim 1, characterized in that: A limit plate (18) is fixedly connected to the interior of the curved pipe (5), and the limit plate (18) is located outside the inner end of the dynamic pressure sensor (3).

Images