Phased array sensor for flue gas flow measurement with shock-proof fixing mechanism

Abstract

The utility model discloses a kind of smoke flow measurement with phased array sensor of shockproof fixing mechanism, belong to smoke monitoring technical field, including main part, probe fixedly connected in the front side of main part, pipeline fixedly connected in the both sides of main part, pipeline front end fixedly connected flange, fixed hole in the fixed connection rubber pad and internal thread of flange, sensor further includes guide tube fixedly connected on main part, thin tube is fixed through guide tube, thick pipe sleeve is set in thin tube top, thick pipe is fixedly connected cylinder, cylinder connects spring and piston one, recess is set in thin tube top, recess inside is slidably connected piston two. The utility model realizes double shockproof by rubber pad and spring air damping assembly, effectively attenuates vibration, improves measurement accuracy, and installation is stable, and good sealing.

Description

Technical Field

[0001] This utility model relates to the field of flue gas monitoring technology, and in particular to a phased array sensor for flue gas flow measurement with a shockproof fixing mechanism. Background Technology

[0002] Flue gas flow measurement is an important part of industrial production and environmental protection. For example, in the flue of thermal power plants and in the process pipelines of metallurgy and chemical industries, it is necessary to accurately monitor the emission flow of flue gas.

[0003] Phased array sensors, especially those based on ultrasonic principles, are widely used for measuring flue gas flow due to their non-contact and high-precision characteristics. However, these industrial applications operate in very harsh environments, where flues or pipes are often accompanied by strong mechanical vibrations transmitted from fans, engines, or other large equipment.

[0004] In existing technologies, phased array sensors are rigidly or semi-rigidly fixed to the outer wall of the flue via flange connectors. This traditional fixing method causes the mechanical vibration of the flue to be transmitted directly to the sensor's measuring body and internal precision probe with almost no attenuation. Since phased array measurement technology has extremely high requirements for the stability of signal transmission and reception, the shaking of the main body and the jitter of the probe will cause the ultrasonic signal transmission and reception path to become inaccurate, introducing serious measurement noise. This in turn causes large fluctuations in the sensor output data, poor stability, and a significant decrease in measurement accuracy. In addition, long-term severe vibration can also cause fatigue damage to the electronic components and structural connections inside the sensor, shortening the service life of the equipment.

[0005] Therefore, how to effectively and securely mount the sensor on the vibration source while actively absorbing and attenuating vibration energy to protect the measurement subject from vibration interference is a technical problem that urgently needs to be solved in this field.

[0006] Therefore, this utility model proposes a phased array sensor for flue gas flow measurement with a shockproof fixing mechanism to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems existing in the phased array sensor for flue gas flow measurement, when installed in a strong vibration environment, the measuring body will shake due to vibration interference, resulting in measurement signal distortion, poor stability and affecting equipment life. The present invention aims to provide a phased array sensor for flue gas flow measurement with a vibration-proof fixing mechanism that has an improved structure and can effectively solve the above problems.

[0008] This utility model provides a phased array sensor for measuring flue gas flow rate with a shockproof fixing mechanism, comprising: a main body, and a plurality of probes fixedly connected to the front side of the main body and arranged in a linear shape;

[0009] And pipes fixedly connected to both sides of the main body, with a flange fixedly connected to the front end of the pipe, a fixing hole opened on the flange, a rubber gasket fixedly connected in the fixing hole, and an internal thread fixedly connected inside the rubber gasket;

[0010] And guide tubes that are respectively fixedly connected to the top, bottom and rear of the main body;

[0011] And reinforcing ribs that are fixedly connected to the guide tube on the rear side of the main body;

[0012] And thin tubes, thick tubes, cylinders, springs, piston one, notches and piston two.

[0013] The thin tube is fixedly connected to the outside of the main body through the guide tube, and the thick tube is sleeved on the top of the thin tube.

[0014] Furthermore, the cylinder is fixedly connected to the top of the inner side of the thick tube, the spring is connected to the surface of the cylinder, the first piston is fixedly connected to the bottom of the cylinder, the notch is opened at the top of the thin tube, and the second piston is slidably connected inside the notch.

[0015] Preferably, the guide tube is a hollow tubular structure.

[0016] Preferably, the reinforcing rib is used to structurally strengthen the connection between the main body and the guide tube.

[0017] Preferably, the probe is used to transmit and receive ultrasonic signals to detect flue gas.

[0018] Preferably, the rubber gasket forms a sealed environment within the flange and cushions vibration.

[0019] Preferably, the internal thread is used to secure the flange with bolts.

[0020] Preferably, the spring is disposed inside the thick tube, one end of the spring is connected to the cylinder, and the other end of the spring, i.e. the bottom, abuts against the top surface of the thin tube located around the notch.

[0021] Preferably, the first piston is axially aligned with the second piston, and the first piston and the second piston are connected by a damped transmission through the air inside the thin tube.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model, through the cooperation of a rubber gasket set inside the flange and a spring air damping assembly consisting of a thick pipe, a thin pipe, a spring, piston one, and piston two, forms a dual anti-vibration system, which solves the problem that existing sensors will shake due to vibration interference in the strong vibration environment of the flue, resulting in inaccurate measurements.

[0024] 2. This utility model, by adopting a flange structure and setting a rubber gasket and internal thread in the fixing hole of the flange, solves the problems of insecure fixing or poor sealing in the existing installation method, and achieves stable and reliable installation, effective sealing of flue gas, and preliminary buffering of high frequency vibration. Attached Figure Description

[0025] Figure 1 This is a perspective view of the phased array sensor for flue gas flow measurement with a shockproof fixing mechanism proposed in this utility model.

[0026] Figure 2 This is a front view of the phased array sensor for flue gas flow measurement with a shockproof fixing mechanism proposed in this utility model.

[0027] Figure 3 This is a partial structural diagram of the phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism proposed in this utility model.

[0028] Figure 4 This is a partial structural diagram of the phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism proposed in this utility model.

[0029] Figure 5 This is an exploded view of the external structure of the phased array sensor for flue gas flow measurement with a shockproof fixing mechanism proposed in this utility model.

[0030] Legend:

[0031] 1. Main body; 2. Probe; 3. Pipe; 4. Flange; 5. Fixing hole; 6. Rubber gasket; 7. Internal thread; 8. Guide tube; 9. Thick tube; 10. Cylinder; 11. Spring; 12. Piston one; 13. Thin tube; 14. Notch; 15. Piston two; 16. Reinforcing rib. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0033] Example:

[0034] Please refer to Figures 1 to 5 This utility model provides a phased array sensor for measuring flue gas flow with a shockproof fixing mechanism. It aims to solve the problem that when the existing flue gas flow phased array sensor is installed in an industrial environment with strong vibration of flue, the measuring body 1 will be disturbed by vibration and shake, resulting in distortion of the measurement signal and affecting the accuracy of the measurement and the stability of the equipment.

[0035] like Figure 1 , Figure 2 and Figure 5 As shown, the phased array sensor for flue gas flow measurement with anti-vibration fixing mechanism includes a main body 1 and multiple probes 2 fixedly connected to the front side of the main body 1 and arranged in a linear shape. The main body 1 serves as the core frame of the entire sensor and is used to integrate the probes 2 and connect the subsequent fixing and anti-vibration mechanism. The probes 2 are used to transmit and receive ultrasonic signals to realize the detection of flue gas.

[0036] To ensure stable installation of the sensor and provide primary buffering, the sensor also includes pipes 3 fixedly connected to both sides of the main body 1. A flange 4 is fixedly connected to the front end of the pipe 3. The flange 4 is the main installation interface component. A fixing hole 5 is provided on the flange 4. A rubber gasket 6 is fixedly connected inside the fixing hole 5. The rubber gasket 6 forms a sealed environment in the flange 4 and buffers vibration. An internal thread 7 is fixedly connected inside the rubber gasket 6. The internal thread 7 is used to fix the flange 4 with bolts.

[0037] To construct the supporting frame of the earthquake-resistant mechanism, such as Figure 1 and Figure 3 As shown, the sensor also includes guide tubes 8 that are fixedly connected to the top, bottom and rear of the main body 1 respectively. The guide tubes 8 are hollow tubular structures. The guide tubes 8 provide a mounting base and motion guide for the subsequent damping components. A reinforcing rib 16 is fixedly connected to the guide tube 8 fixedly connected to the rear of the main body 1. The reinforcing rib 16 is used to structurally strengthen the connection between the main body 1 and the guide tube 8 to ensure the reliability of the connection under vibration environment.

[0038] like Figure 1 , Figure 3 and Figure 4As shown, the core shock-absorbing structure of this embodiment consists of a precision leaf spring air damping assembly. This assembly includes a thin tube 13 fixedly connected to the outside of the main body 1 via a guide tube 8, a thick tube 9 coaxially sleeved on the top of the thin tube 13, a cylinder 10 fixedly connected to the top of the inner side of the thick tube 9, a spring 11 connected to the surface of the cylinder 10, and a piston 12 fixedly connected to the bottom of the cylinder 10. A notch 14 is provided at the top of the thin tube 13, and a piston 2 15 is slidably connected inside the notch 14. In the assembled state, the specific positional relationship and cooperation relationship of this core shock-absorbing structure are as follows: the spring 11 is located inside the thick tube 9, one end of the spring 11 is connected to the cylinder 10, and the other end, i.e., the bottom, abuts against the top surface of the thin tube 13 located around the notch 14. The bottom of piston 12 is inserted into the notch 14 of thin tube 13 and is located above piston 2 15. Piston 12 is axially aligned with piston 2 15. The damping transmission between piston 12 and piston 2 15 is formed by the air in thin tube 13. This leaf spring double piston air damping structure, which is composed of thick tube 9, thin tube 13, cylinder 10, spring 11, piston 12 and piston 2 15, ensures that when the sensor as a whole is vibrated, the thick tube 9 and thin tube 13 move relative to each other. The thick tube 9 drives cylinder 10 to compress spring 11 and drive piston 12. Piston 12 squeezes air to push piston 2 15 to slide. Through the elastic recovery of spring 11 and the damping effect of air, the vibration amplitude is quickly attenuated, thereby achieving effective shock absorption protection for the main body 1.

[0039] Please refer to Figure 1 and Figure 3 The guide tube 8 is preferably a hollow tubular structure. This hollow tubular structure helps to reduce the overall weight and provide space for internal wiring. A reinforcing rib 16 is also fixedly connected to the guide tube 8, which is fixedly connected to the rear side of the main body 1. The reinforcing rib 16 is used to structurally strengthen the connection between the main body 1 and the guide tube 8. This setting improves the rigidity and vibration resistance of the connection between the main body 1 and the guide tube 8.

[0040] Please refer to Figure 2 Multiple probes 2 are arranged in a linear pattern on the front side of the main body 1. The probes 2 are used to transmit and receive ultrasonic signals to detect flue gas. The specific number and spacing of the probes 2 can be configured according to the flue pipe diameter and measurement accuracy requirements.

[0041] Please refer to Figure 5 As a preferred embodiment of the fixing mechanism, a rubber gasket 6 is fixedly connected inside the fixing hole 5 on the flange 4. The rubber gasket 6 forms a sealed environment in the flange 4 and buffers vibration. The rubber gasket 6 is preferably made of an elastic material that is resistant to high temperature and corrosion. The rubber gasket 6 is fixedly connected with an internal thread 7, which is used to fix the flange 4 with bolts. The internal thread 7 is preferably a metal insert to ensure the strength and durability of the connection.

[0042] Please refer to Figure 3 and Figure 4 As a preferred embodiment of the core shock-absorbing structure, the spring 11 is specifically installed inside the thick tube 9. One end of the spring 11 is connected to the cylinder 10, and the other end of the spring 11, i.e. the bottom, abuts against the top surface of the thin tube 13 located around the notch 14. At the same time, the piston 12 is axially aligned with the piston 2 15. The damping transmission between the piston 12 and the piston 2 15 is formed by the air in the thin tube 13. The sidewalls of the piston 12 and the piston 2 15 slide against the inner wall of the thin tube 13. The bottom of the piston 2 15 is restricted to the bottom of the notch 14. This structural design allows the air damping chamber to be precisely formed.

[0043] Working Principle: During installation, the flange 4 is bolted in place by fixing the internal threads 7 of the rubber gasket 6 inside the fixing holes 5 on the flange 4. The flange 4 securely mounts the sensor onto the flue gas duct. During this fixing process, the rubber gasket 6 inside the fixing holes 5 is compressed, creating a sealed environment within the flange 4 and buffering high-frequency vibrations transmitted from the flue gas wall. The rubber gasket 6 provides the first layer of initial vibration isolation and sealing. When the sensor is operating, multiple probes 2, fixedly connected to the front of the main body 1 and arranged linearly, transmit and receive ultrasonic signals to detect flue gas, thereby completing the phased array measurement of flue gas flow within the flue. When vibration occurs in the operating environment, especially... When the flue experiences large or low-frequency vibrations, these vibrations are transmitted to the entire sensor structure. At this time, the core anti-vibration mechanism activates. The vibration causes pressure to be generated in the thick tube 9, which is then pressed and moves axially relative to the thin tube 13. Since the cylinder 10 is fixedly connected to the top inner side of the thick tube 9, the movement of the thick tube 9 causes the cylinder 10 to move as well. The cylinder 10 then moves the piston 12, fixedly connected to the bottom, downwards. Simultaneously, the spring 11 on the surface of the cylinder 10, with one end connected to the cylinder 10 and the other end (the bottom) abutting against the top surface of the thin tube 13 around the notch 14, compresses the spring 11 as it moves downwards. During this process, the spring 11 stores elastic energy. As piston 12 moves downward, piston 12 axially aligns with piston 15. Piston 12 compresses the air inside the thin tube 13, and through the air inside the thin tube 13, piston 12 presses against piston 15 inside the thin tube 13. Piston 15 slides in the notch 14 inside the thin tube 13. This process of compressing air and pushing piston 15 to slide creates air damping. The kinetic energy of the vibration is converted into heat energy and dissipated in this process, thus effectively weakening the transmission of vibration to the main body 1. When the energy of the vibration impact is absorbed, or when the vibration direction is reversed, because the bottom of spring 11 contacts the remaining part of the thin tube 13 except for the notch 14, spring 11 will rebound due to the previously stored compressive force. The rebound force of spring 11 will push cylinder 10 upward. Upon retraction, cylinder 10 drives the thick tube 9 and piston 12 back to their original positions. This prevents the air inside the notch 14 in thin tube 13 from being compressed, and piston 15 also returns to its original position due to pressure equilibrium. The entire anti-vibration mechanism is prepared for the next vibration impact. As this movement repeats, the core anti-vibration mechanism continuously weakens the transmission of vibration to the main body 1 and rapidly attenuates the vibration amplitude, preventing significant shaking of the main body 1. This protects the measurement accuracy of probe 2 and the long-term stability of the sensor. Throughout the process, guide tubes 8, which are fixedly connected to the top, bottom, and rear of the main body 1 respectively, provide a solid fixed base and motion guide for the anti-vibration assembly composed of the thick tube 9 and thin tube 13.A reinforcing rib 16 is also fixedly connected to the guide tube 8 fixedly connected to the rear side of the main body 1. The reinforcing rib 16 is used to structurally strengthen the connection between the main body 1 and the guide tube 8, ensuring the rigidity of the connection between the shock-absorbing mechanism and the main body 1, so that the vibration energy is effectively guided to the damper for dissipation;

[0044] In summary, this utility model achieves dual shockproof fixation by using the first-stage buffer of the rubber pad 6 and the second-stage active air damping composed of the thick tube 9, the thin tube 13, the cylinder 10, the spring 11, the piston one 12, and the piston two 15, thus solving the problem of measurement stability under vibration environment.

Claims

1. A phased array sensor for measuring flue gas flow rate with a shock-resistant fixing mechanism, comprising: The main body (1) and multiple probes (2) fixedly connected to the front side of the main body (1) and arranged in a linear pattern; The sensor is characterized in that it further includes pipes (3) fixedly connected to both sides of the main body (1), a flange (4) fixedly connected to the front end of the pipes (3), a fixing hole (5) is provided on the flange (4), a rubber gasket (6) is fixedly connected in the fixing hole (5), and an internal thread (7) is fixedly connected inside the rubber gasket (6). It also includes guide tubes (8) fixedly connected to the top, bottom, and rear sides of the main body (1) respectively, and a guide tube (8) fixedly connected to the rear side of the main body (1) is fixedly... A reinforcing rib (16) is fixedly connected to the outside of the main body (1) through the guide tube (8). A thick tube (9) is sleeved on the top of the thin tube (13). A cylinder (10) is fixedly connected to the top of the inner side of the thick tube (9). A spring (11) is connected to the surface of the cylinder (10). A piston (12) is fixedly connected to the bottom of the cylinder (10). A notch (14) is opened at the top of the thin tube (13). A piston (15) is slidably connected inside the notch (14).

2. The phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism according to claim 1, characterized in that, The guide tube (8) is a hollow tubular structure.

3. The phased array sensor for flue gas flow measurement with an anti-vibration fixing mechanism according to claim 1, characterized in that, The reinforcing rib (16) is used to structurally strengthen the connection between the main body (1) and the guide tube (8).

4. The phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism according to claim 1, characterized in that, The probe (2) is used to transmit and receive ultrasonic signals to detect flue gas.

5. The phased array sensor for flue gas flow measurement with an anti-vibration fixing mechanism according to claim 1, characterized in that, The rubber pad (6) forms a sealed environment in the flange (4) and buffers vibration.

6. The phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism according to claim 1, characterized in that, The internal thread (7) is used to secure the flange (4) with bolts.

7. The phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism according to claim 1, characterized in that, The spring (11) is disposed inside the thick tube (9), one end of the spring (11) is connected to the cylinder (10), and the other end of the spring (11), i.e. the bottom, abuts against the top surface of the thin tube (13) located around the notch (14).

8. The phased array sensor for flue gas flow measurement with a shock-resistant fixing mechanism according to claim 1, characterized in that, The piston one (12) is axially aligned with the piston two (15), and the piston one (12) and the piston two (15) are connected by air in the thin tube (13) to form a damped transmission.

Images