Air volume measurement combination device with flexible supporting and automatic dust cleaning functions
By using flexible support and vibration cleaning technology in the air volume measurement device, the problem of array air volume measurement device easily accumulates in dust-containing air flow is solved, automatic cleaning is achieved, the safety and economy of the equipment are improved, and the safety and economy of the equipment are reduced. Maintenance workload.
Patent Information
- Application Number
- CN202421036596.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing array air volume measurement device is prone to accumulation of dust in large sections of dust-containing airflow pipes, resulting in blockage of the connection pipe, affecting the safety and economy of the equipment, and requires regular maintenance and purging, which increases the workload.
Design an air volume measurement combination device with flexible support and automatic dust cleaning functions. By setting a vibration conductive member and a flexible mounting member on the outer wall of the air duct, vibrating the air volume measurement member with a vibrator and elastic telescopic member to achieve automatic dust cleaning , reduce maintenance workload.
It realizes automatic cleaning of the air volume measurement device, reduces the workload of maintenance personnel, improves the safety and economy of the equipment, avoids the need for regular purges, and ensures the stable operation of the unit.
Smart Images
Figure CN222280665U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of intelligent measurement and control, in particular to an air volume measurement combined device with flexible support and automatic dust cleaning functions. Background Art
[0002] At present, an array-type air volume measurement device based on the back-to-back tube principle has been widely used in large-section dust-containing airflow ducts in various industries in China. The full-section grid array layout adopted by the device can better meet the precise measurement of gas flow in large-section ducts and is very popular among users. However, since the airflow in most large-section ducts is dust-containing, the measurement principle of the array-type air volume measurement device is based on the back-to-back tube measurement principle. The back-to-back tube measurement principle is to use two tubes with oblique cuts to be back to back and insert them into the air duct. The oblique cut on the front faces the wind, and the oblique cut on the back faces the wind. This will generate a differential pressure in the front and rear tubes. The size of the differential pressure is related to the speed. The greater the wind speed, the greater the differential pressure, thereby measuring the wind speed.
[0003] The gas flow measurement of large-section pipelines basically adopts this back-to-back pipe measurement principle, in which multiple back-to-back measuring devices are arranged in a grid array in the large-section pipeline, and then the positive pressure pipes on the windward side of each back-to-back measuring device are connected together through a connecting pipe to make the positive pressure uniform. Similarly, the negative pressure pipes on the leeward side are also connected together through a connecting pipe to make the negative pressure uniform. The size of the positive and negative pressure after uniformity can reflect the average flow on the entire large-section pipeline section. However, since the large-section pipeline is basically full of dusty gases, dust will inevitably accumulate in the connecting pipe when the array-type air volume measurement device is performing pressure uniformity. After a long time, the connecting pipe will be blocked. At present, equipment safety accidents caused by blockage of air volume devices occur from time to time in China. In order to ensure the reliability of the array-type air volume device, each enterprise user must arrange full-time personnel to regularly purge the array-type air volume device. Due to the large area of the array-type device and the large number of connecting pipes, the dust accumulated in the device is difficult to blow away after a long time, which greatly affects the safe and economical operation of the unit equipment.
[0004] The reasons why array-type air volume devices are prone to dust accumulation are: first, the array-type device adopts a grid array layout, and its connecting pipes are arranged at a certain angle, so dust accumulation is inevitable; second, the dust particles are very fine and have strong adhesion; third, the array-type air volume device is fixedly connected to the air duct as a whole, and the air volume device is in a stationary state when working, and the vibration is very small. Utility Model Content
[0005] The utility model aims to solve the above defects and provides an air volume measurement combined device with flexible support and automatic dust cleaning functions.
[0006] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: a wind volume measuring combination device with flexible support and automatic cleaning functions, including a wind volume measuring component arranged in the air duct and arranged perpendicular to the air flow direction, and the wind volume measuring component is connected to the flexible mounting component arranged on the outer wall of the air duct so as to flexibly suspend the wind volume measuring component, and the vibration conduction component arranged on the outer wall of the air duct is connected to the wind volume measuring component through a vibration conduction rod so as to vibrate the wind volume measuring component.
[0007] A further improvement includes that the vibration conduction component includes a sealing expansion joint, a vibrator and a mounting portion, wherein one end of the sealing expansion joint is connected to and conducted with the outer wall of the air duct, and the other end is connected to the mounting portion, the vibrator is installed on the mounting portion, and the vibration conduction rod passes through the outer wall of the air duct and extends into the sealing expansion joint and is connected to the mounting portion.
[0008] A further improvement includes that the vibrator is preferably an electric vibrator or a pneumatic vibrator.
[0009] A further improvement includes that the flexible mounting component comprises a cantilever beam arranged on the outer wall of the air duct, a second sealing expansion joint, an elastic telescopic component and a mounting cover, one end of the second sealing expansion joint is connected to and conducted with the outer wall of the air duct, and the other end is connected to the mounting cover, the air volume measuring component passes through the outer wall of the air duct and the mounting cover in sequence, the other end of the elastic telescopic component is connected to the cantilever beam to enable the air volume measuring component to be flexibly suspended, and the air volume measuring component is connected to the mounting cover.
[0010] A further improvement includes providing a guide portion on the air volume measuring component and on a side opposite to the vibration conducting component, wherein the guide portion is docked with a guide stopper so that the guide portion is axially slidably connected in the guide stopper.
[0011] A further improvement includes that the guide portion and the guide limiter are clearance-fitted.
[0012] Further improvements include that the air volume measuring component includes two groups of pressure-taking components that are symmetrical and back-to-back arranged, the pressure-taking components include a measuring tube, a differential pressure outlet pipe and a connecting pipe, the measuring tube, the differential pressure outlet pipe and the connecting pipe are on the same plane, the measuring tube faces the airflow and is arranged in an array along the vertical direction, the connecting pipes are arranged at an angle and cross-connected in pairs, and the two ends of the connecting pipes are respectively connected to the middle of the measuring tube, the two ends of the measuring tube are respectively provided with oblique cuts, and the cuts are arranged outward, one end of the differential pressure outlet pipe is connected to the intersection of the connecting pipe, and the other end is connected to the flexible mounting component, and a differential pressure collection pipe connected to the differential pressure outlet pipe is provided outside the air duct.
[0013] A further improvement includes connecting reinforcement portions between the connecting pipes.
[0014] A further improvement includes connecting the reinforcing portion to the guiding portion.
[0015] A further improvement includes connecting the reinforcement portion to a vibration conducting rod.
[0016] The beneficial effects of the utility model are as follows: the design adopts flexible assembly support and a vibration device for automatic dust cleaning, which greatly reduces the maintenance workload of maintenance personnel. There is no need for maintenance personnel to perform regular purging work. At the same time, because the air volume is automatically adjusted during purging, there is no need to de-energize, which further improves the safety and economy of the unit operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 It is the front view of the utility model;
[0019] Figure 2 It is a right view of the utility model;
[0020] Figure 3 It is a cross-sectional view of the flexible installation component in the utility model;
[0021] Figure 4 It is a cross-sectional view of the vibration conducting component in the utility model;
[0022] In the figure, 1-air duct, 2-measuring tube, 3-communication tube, 4-cantilever beam, 5-sealed expansion joint 1, 6-vibrator, 7-elastic telescopic member, 8-sealed expansion joint 2, 9-differential pressure lead-out pipe, 10-cut-out, 11-guide part, 12-guide limiter, 13-differential pressure collection tube, 14-installation part, 15-vibration conduction rod, 16-installation cover, 17-reinforcement part. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] according to Figure 1 and Figure 2As shown, a wind volume measuring combination device with flexible support and automatic cleaning functions includes a wind volume measuring component arranged in the wind duct 1 and arranged perpendicular to the airflow direction, and the wind volume measuring component is connected to the flexible mounting component arranged on the outer wall of the wind duct 1, so as to flexibly suspend the wind volume measuring component, and the vibration conduction component arranged on the outer wall of the wind duct 1 is connected to the wind volume measuring component through a vibration conduction rod 15, so as to vibrate the wind volume measuring component. This design adopts flexible assembly support and a vibration device for automatic cleaning, and at the same time greatly reduces the maintenance workload of maintenance personnel, and does not require maintenance personnel to perform regular purging work. At the same time, because the air volume is automatically adjusted during purging, there is no need to de-couple the unit, so the safety and economy of the unit operation are further improved, and online detection can be realized.
[0025] according to Figure 4 As shown, the vibration transmission component includes a sealing expansion joint 5, a vibrator 6 and a mounting portion 14, one end of the sealing expansion joint 5 is connected to the outer wall of the air duct 1 and is conductive, and the other end is connected to the mounting portion 14, the vibrator 6 is installed on the mounting portion 14, and the vibration transmission rod 15 passes through the outer wall of the air duct 1 and extends to the sealing expansion joint 5 and is connected to the mounting portion 14, so that the vibrator 6 drives the mounting portion 14 and the vibration transmission rod 15 to resonate, and the air volume measuring component is vibrated and cleaned. The sealing expansion joint 5 is used to absorb the vibration generated by the vibrator 6, which plays a role in vibration absorption and noise reduction. The vibrator 6 is preferably an electric vibrator or a pneumatic vibrator. Since the air volume measuring component adopts a suspended flexible connection, the power selected by the vibrator factory does not need to be too large, and a very small power can enable the air volume measuring component to obtain a larger amplitude of the vibration period. The control of the vibrator 6 can be adopted regularly or irregularly, and can be determined according to the dust accumulation condition of the air volume measuring component, and automatic control can be achieved.
[0026] according to Figure 3 As shown, the flexible installation component includes a cantilever beam 4, a sealing expansion joint 28, an elastic telescopic member 7 and a mounting cover 16 arranged on the outer wall of the air duct 1. One end of the sealing expansion joint 28 is connected to the outer wall of the air duct 1 and is conductive, and the other end is connected to the mounting cover 16. The air volume measuring component passes through the outer wall of the air duct 1, the mounting cover 16 and one end of the elastic telescopic member 7 in sequence, and the other end of the elastic telescopic member 7 is connected to the cantilever beam 4 so that the air volume measuring component is flexibly suspended and connected, and the air volume measuring component is connected to the mounting cover 16. The air volume measuring component is suspended by the elastic telescopic member 7 and the sealing expansion joint 28, and has good flexibility.
[0027] A guide portion 11 is provided on the air volume measuring component and on the side opposite to the vibration conducting component, and the guide portion 11 is docked with a guide stopper 12 so that the guide portion 11 is axially slidably connected in the guide stopper 12. This design has the functions of guiding and limiting. In a further embodiment, the guide portion 11 and the guide stopper 12 are clearance-matched so that the air volume measuring component can shake irregularly within the gap range. When there is wind flowing in the air duct, the air volume measuring component is bound to be blown back and forth to shake greatly, which will affect the accuracy and reliability of the air volume device. In other words, the air volume measuring component can neither shake greatly nor be fixed in the air duct. For this reason, a guide stopper 12 is provided, and a reasonable gap is provided in the guide stopper 12 so that the air volume measuring component can only swing back and forth and left and right within the gap range. This small swinging range has no effect on the measurement accuracy and reliability of the air volume measuring component, and this vibration can also be used for cleaning.
[0028] The air volume measurement component includes two groups of pressure-taking components that are symmetrical and back-to-back arranged, and the pressure-taking components include a measuring tube 2, a differential pressure outlet tube 9, and a connecting tube 3. The measuring tube 2, the differential pressure outlet tube 9, and the connecting tube 3 are on the same plane. The measuring tube 2 faces the airflow and is arranged in an array along the vertical direction. This method will cause the accumulated dust to fall back into the air duct. The connecting tubes 3 are arranged obliquely and cross-connected in pairs, and the two ends of the connecting tube 3 are respectively connected to the middle of the measuring tube 2. The two ends of the measuring tube 2 are respectively provided with oblique cutouts 10, and The cut-out 10 is arranged outward, one end of the differential pressure outlet pipe 9 is connected to the intersection of the connecting pipe 3, and the other end is connected to the flexible mounting component. A differential pressure collection pipe 13 connected to the differential pressure outlet pipe 9 is arranged outside the air duct 1. The cut-out 10 in the pressure taking assembly on the front of the air volume measuring component faces the airflow and can be used to detect the positive pressure of the airflow. The cut-out 10 in the pressure taking assembly on the back of the air volume measuring component faces away from the airflow and can be used to detect the negative pressure of the airflow. The differential pressure outlet pipe 9 acts as a suspension rod and transmits pressure.
[0029] A reinforcement part 17 is connected between the communication pipes 3. The provision of the reinforcement part 17 is beneficial to improving the strength and rigidity of the air volume measurement component and ensuring stability during use.
[0030] The reinforcing portion 17 is connected to the guiding portion 11 ; the reinforcing portion 17 is connected to the vibration conducting rod 15 .
[0031] Working principle: The vibrator 6 generates vibration and vibrates the air volume measuring component through the vibration conduction rod 15, the air volume measuring component generates vibration, and the elastic telescopic component 7 amplifies the vibration of the air volume measuring component, wherein the cut-out 10 on the windward side takes the air pressure value of the positive pressure of the air flow, the sealing expansion joint 1 5 and the sealing expansion joint 2 8 play the role of buffering and vibration absorption, and the negative pressure of the cut-out 10 on the leeward side takes the air pressure value, and the pressure difference between the air pressure values of the two pressure taking components is calculated, thereby measuring the speed of the air flow, and the vibration generated by the air volume measuring component can make the accumulated dust in the measuring tube automatically shake off and fall back into the air duct.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An air volume measurement assembly with flexible support and automatic dust cleaning function, characterized in that: The invention comprises an air volume measuring component arranged in an air duct (1) and perpendicular to the air flow direction, wherein the air volume measuring component is connected to a flexible mounting component arranged on the outer wall of the air duct (1), thereby flexibly suspending the air volume measuring component, and a vibration transmission component arranged on the outer wall of the air duct (1) is connected to the air volume measuring component via a vibration transmission rod (15), thereby vibrating the air volume measuring component.
2. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 1, characterized in that: The vibration transmission component comprises a sealing expansion joint (5), a vibrator (6) and a mounting portion (14); one end of the sealing expansion joint (5) is connected to and conducted with the outer wall of the air duct (1), and the other end is connected to the mounting portion (14); the vibrator (6) is mounted on the mounting portion (14), and the vibration transmission rod (15) passes through the outer wall of the air duct (1) and extends into the sealing expansion joint (5) and is connected to the mounting portion (14).
3. An air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 1 or 2, characterized in that: The flexible installation component comprises a cantilever beam (4) arranged on the outer wall of the air duct (1), a second sealing expansion joint (8), an elastic telescopic component (7) and a mounting cover (16); one end of the second sealing expansion joint (8) is connected to and conducted with the outer wall of the air duct (1), and the other end is connected to the mounting cover (16); the air volume measuring component passes through the outer wall of the air duct (1), the mounting cover (16) is connected to one end of the elastic telescopic component (7) in sequence, and the other end of the elastic telescopic component (7) is connected to the cantilever beam (4) so that the air volume measuring component is flexibly suspended and connected, and the air volume measuring component is connected to the mounting cover (16).
4. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 1, characterized in that: A guide portion (11) is provided on the air volume measurement component at a side opposite to the vibration transmission component, and the guide portion (11) is butted against a guide stopper (12) so that the guide portion (11) is axially slidably connected within the guide stopper (12).
5. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 4, characterized in that: The guide portion (11) and the guide stopper (12) are clearance-fitted.
6. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 1, characterized in that: The air volume measurement component comprises two groups of pressure taking components which are symmetrical and arranged back to back, the pressure taking components comprising a measuring tube (2), a differential pressure outlet tube (9) and a connecting tube (3), the measuring tube (2), the differential pressure outlet tube (9) and the connecting tube (3) being on the same plane, the measuring tube (2) facing the airflow and arranged in an array along the vertical direction, the connecting tubes (3) being arranged obliquely and arranged in pairs so as to cross and connect, and the two ends of the connecting tube (3) being respectively connected to the middle of the measuring tube (2), the two ends of the measuring tube (2) being respectively provided with oblique cutouts (10), and the cutouts (10) being arranged outward, one end of the differential pressure outlet tube (9) being connected to the intersection of the connecting tube (3), and the other end being connected to the flexible mounting component, and a differential pressure collection tube (13) being connected to the differential pressure outlet tube (9) being arranged outside the air duct (1).
7. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 6, characterized in that: A reinforcement portion (17) is connected between the communication pipes (3).
8. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 7, characterized in that: The reinforcement portion (17) is connected to the guide portion (11).
9. The air volume measurement assembly device with flexible support and automatic dust cleaning function as claimed in claim 7, characterized in that: The reinforcement portion (17) is connected to the vibration conducting rod (15).