Water flow monitor

Abstract

The present invention provides a water ripple flow monitor, which includes a housing, and the incident port is located at the bottom of the housing, including a focusing enhancement structure and a dynamic filtering structure. The present invention relates to the field of oil well exploitation technology. The present invention forms an efficient optical path system through the preliminary convergence of the concave reflector in the focusing enhancement structure and the precise focusing of the focusing mirror, reduces the energy loss of rays during transmission, improves the focusing accuracy, and enhances the stability, thereby significantly improving the focusing effect of gamma rays and enhancing the detection capability of the monitor. Furthermore, the present invention effectively removes low-energy and high-energy gamma rays through the setting of the filtering component in the dynamic filtering structure, allows medium-energy gamma rays to pass through, avoids the interference of low-energy and high-energy rays on the monitor, reduces background noise, and enables the monitor to only detect useful gamma rays, thereby improving the purity and accuracy of the detection data.

Description

Technical Field

[0001] The present invention relates to the technical field of oil well mining, in particular to a watermark flow monitor. Background Art

[0002] During oilfield development, as reservoir pressure naturally decreases, it is often necessary to drill water wells next to the oil wells to maintain their production capacity and reservoir pressure. Water is then injected into the water wells to replenish reservoir energy and achieve sustainable oilfield development. In this process, the application of water flow monitors is particularly important, as they can monitor the water flow dynamics of injection wells in real time to ensure injection efficiency.

[0003] Although traditional water ripple flow monitors can measure the flow rate and direction of water, they still have some defects in detection, such as insufficient detection sensitivity and susceptibility to interference from environmental rays. These defects lead to inaccurate measurement data. Summary of the Invention

[0004] The purpose of the present invention is to provide a water ripple flow monitor, which can solve the problems of insufficient detection sensitivity and susceptibility to interference from environmental rays in traditional water ripple flow monitors, which lead to inaccurate measurement data.

[0005] The present invention provides a water ripple flow monitor, which includes a housing, an inlet is provided at the bottom of the housing, and includes a focusing enhancement structure and a dynamic filtering structure. The focusing enhancement structure is fixedly arranged at the inlet at the bottom of the housing, and the focusing enhancement structure is used to focus gamma rays. The focusing enhancement structure includes a focusing mirror, a plurality of connecting rods, an annular bracket and a concave reflecting mirror. The focusing mirror is fixedly arranged at the inlet at the bottom of the housing, one end of the plurality of connecting rods is fixedly arranged at the bottom of the housing, and the annular bracket is fixedly arranged at the other end of the plurality of connecting rods. The concave reflector is fixedly arranged in the annular bracket, the incident surface of the concave reflector is the convex side, that is, the side away from the focusing mirror, and the reflective surface of the concave reflector is the concave side, that is, the side close to the focusing mirror. The concave reflector is located below the focusing mirror, and the optical center axes of the focusing mirror and the concave reflector are aligned with each other to form a coordinated optical path. A dynamic filtering structure for filtering redundant rays is also fixedly arranged on the outer bottom of the casing. The dynamic filtering structure is located between the focusing mirror and the concave reflector, and the dynamic filtering structure includes a filtering component and a driving component.

[0006] Preferably, the filter assembly includes a filter frame, a low-energy gamma ray filter layer and a high-energy gamma ray filter layer, the filter frame is a cylindrical structure with left and right sides open, and the filter frame is fixedly arranged on the outer bottom of the casing, the focusing mirror is located in the filter frame, and the inner wall of the filter frame is provided with two circular slide grooves, the low-energy gamma ray filter layer and the high-energy gamma ray filter layer are respectively slidably connected to the two circular slide grooves, the low-energy gamma ray filter layer is close to the concave reflector, and the high-energy gamma ray filter layer is close to the focusing mirror, the driving assembly is arranged on the filter frame, and the driving assembly is connected to the low-energy gamma ray filter layer and the high-energy gamma ray filter layer, and the low-energy gamma ray filter layer and the high-energy gamma ray filter layer can rotate under the drive of the driving assembly.

[0007] Preferably, the drive assembly includes a rotating shaft, a motor, a drive shaft, a first bevel gear and a second bevel gear, the rotating shaft is fixedly arranged between the low-energy gamma ray filter layer and the high-energy gamma ray filter layer, the motor is fixedly arranged on the outer rear side of the filter frame, the drive shaft is rotatably connected to the rear side of the filter frame, and one end of the drive shaft is fixedly connected to the drive end of the motor, the first bevel gear is fixedly arranged at the other end of the drive shaft, the second bevel gear is fixedly arranged on the rotating shaft, and the second bevel gear is located in front of the first bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0008] Preferably, the dynamic filtering structure further includes a heat dissipation component for dissipating heat from the low-energy gamma ray filtering layer and the high-energy gamma ray filtering layer.

[0009] Preferably, the heat dissipation assembly includes a transmission shaft, a third bevel gear and fan blades. The transmission shaft is rotatably connected to the front side of the filter frame. The third bevel gear is fixedly arranged at one end of the transmission shaft, and the third bevel gear is located in front of the second bevel gear. The third bevel gear is meshed with the second bevel gear. The fan blades are fixedly arranged at the other end of the transmission shaft. A vent is opened on the front side of the filter frame, and the vent corresponds to the position of the fan blades.

[0010] Preferably, the heat dissipation component further comprises a plurality of heat dissipation ports, which are evenly arranged on the top and bottom of the filter frame, and are inclined toward the low-energy gamma ray filter layer and the high-energy gamma ray filter layer, respectively.

[0011] Preferably, the low-energy gamma ray filter layer is made of metal materials such as aluminum or beryllium, and the high-energy gamma ray filter layer is made of metal materials such as lead or tungsten. The filtering surfaces of the low-energy gamma ray filter layer and the high-energy gamma ray filter layer are both wavy.

[0012] Preferably, the drive shaft and the filter frame, as well as the transmission shaft and the filter frame, are rotatably connected via sealed bearings.

[0013] Preferably, a protective structure for protecting the focusing enhancement structure is also provided on the outer wall of the housing.

[0014] Preferably, the protective structure includes two sliders, a protective shell, two electric telescopic rods and two connecting plates. Two slides are provided on the outer wall of the shell. The two sliders are slidably connected to the two slides respectively. The inner wall of the protective shell is fixedly connected to the two sliders, and both sides of the protective shell are open. The two electric telescopic rods are fixedly arranged on the outer wall of the shell, the two connecting plates are fixedly arranged at the driving ends of the two electric telescopic rods, and the two connecting plates are fixedly arranged on the outer wall of the protective shell.

[0015] The present invention provides a water ripple flow monitor through improvements. Compared with the prior art, the present invention has the following improvements and advantages: the present invention forms an efficient optical path system through the preliminary convergence of the concave reflector in the focusing enhancement structure and the precise focusing of the focusing mirror, reduces the energy loss of the rays during the transmission process, improves the focusing accuracy, and enhances the stability, thereby significantly improving the focusing effect of the gamma rays and enhancing the detection capability of the monitor. Furthermore, the present invention effectively removes low-energy and high-energy gamma rays through the setting of the filtering component in the dynamic filtering structure, allows medium-energy gamma rays to pass through, avoids the interference of low-energy and high-energy rays on the monitor, reduces background noise, and enables the monitor to only detect useful gamma rays. , improving the purity and accuracy of the detection data. The design of the driving component within the dynamic filtering structure enables the low-energy gamma ray filter layer and the high-energy gamma ray filter layer to rotate, ensuring that every part of the filter layer can be fully utilized, avoiding the waste of resources caused by uneven filtration, and at the same time reducing the aging of the filter layer and extending its service life. At the same time, the heat dissipation component and the driving component use the same power source to ensure that the heat generated during the filtration process can be discharged in time through the heat dissipation component, preventing the low-energy gamma ray filter layer and the high-energy gamma ray filter layer from accumulating heat during the filtration process. Performance degradation caused by this prevents the performance of the filter component during long-term operation. The combination of the focusing enhancement structure and the dynamic filtering structure has achieved a significant improvement in detection accuracy. Finally, the setting of the protective structure enables the monitor to protect the focusing enhancement structure during the lowering process, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the axonometric structure of the water ripple flow monitor of the present invention in use;

[0018] Figure 2 This is a schematic diagram of the axonometric structure of the water flow monitor of the present invention when not in use;

[0019] Figure 3 This is an axonometric structural diagram of the housing, focus enhancement structure, and protective structure of the water ripple flow monitor of the present invention;

[0020] Figure 4 This is a schematic diagram of the axonometric structure of the filter frame of the water ripple flow monitor of the present invention;

[0021] Figure 5 This is a schematic diagram of the axonometric structure of the low-energy gamma ray filter layer, the high-energy gamma ray filter layer, the rotating shaft, and the second bevel gear of the water ripple flow monitor of the present invention;

[0022] Figure 6 Schematic diagram of the top view of the dynamic filtering structure of the water ripple flow monitor of the present invention;

[0023] Figure 7 This is a schematic diagram of the main structure of the dynamic filtering structure of the water ripple flow monitor of the present invention;

[0024] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of position A;

[0025] Figure 9 This is a schematic diagram of the axonometric structure of the protective structure of the water ripple flow monitor of the present invention.

[0026] Description of reference numerals:

[0027] 1. Casing; 2. Focusing enhancement structure; 21. Focusing mirror; 22. Connecting rod; 23. Ring bracket; 24. Concave reflector; 3. Dynamic filtering structure; 31. Filter assembly; 31-1. Filter rack; 31-2. Low-energy gamma-ray filter layer; 31-3. High-energy gamma-ray filter layer; 32. Drive assembly; 32-1. Rotating shaft; 32-2. Motor; 32-3. Drive shaft; 32-4. First bevel gear; 32-5. Second bevel gear; 33. Heat dissipation assembly; 33-1. Drive shaft; 33-2. Third bevel gear; 33-3. Fan blade; 33-4. Heat dissipation vent; 4. Protective structure; 41. Slider; 42. Protective shell; 43. Electric telescopic rod; 44. Connecting plate; DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] See also Figure 1-3The present invention provides a technical solution: a water ripple flow monitor, which includes a housing 1. The monitor is a sodium iodide detector in a well logging instrument in the prior art. The sodium iodide detector is used to detect gamma rays downhole, thereby analyzing water flow dynamics. The sodium iodide detector is an existing device in this field and will not be introduced in detail here. An incident port is provided at the bottom of the casing, which is the position where gamma rays are incident. The monitor includes a focusing enhancement structure 2 and a dynamic filtering structure 3. The focusing enhancement structure 2 is fixedly provided at the incident port at the bottom of the casing 1. The focusing enhancement structure 2 is used to focus the gamma rays, reduce the energy loss of the rays during transmission, improve the focusing accuracy, and enhance the stability, thereby improving the focusing effect of the gamma rays, and thus improving the accuracy and stability of the monitor during the monitoring process. The focusing enhancement structure 2 includes a focusing mirror 21, a plurality of connecting rods 22, an annular bracket 23 and a concave reflector 24. The focusing mirror 21 is fixedly provided at the incident port at the bottom of the casing 1, one end of the plurality of connecting rods 22 is fixedly provided at the bottom of the casing 1, and the annular bracket 23 is fixedly provided at the other end of the plurality of connecting rods 22. The connecting rod 22 is used to support the annular bracket 23 and the concave reflector 24. The concave reflector 24 is fixedly provided in the annular bracket 23. The incident surface of the concave reflector 24 is a convex side, that is, away from the focusing mirror 2 1, the reflecting surface of the concave reflector 24 is concave, that is, the side close to the focusing mirror 21, which helps to reflect and converge the gamma rays to the focusing mirror 21. The concave reflector 24 is located below the focusing mirror 21, and the optical center axes of the focusing mirror 21 and the concave reflector 24 are aligned with each other to form a coordinated optical path, ensuring that the gamma rays can be accurately focused on the sodium iodide crystal after being reflected by the concave reflector 24 and focused by the focusing mirror 21, thereby improving the detection efficiency and accuracy of the monitor. A dynamic filtering structure 3 for filtering excess rays is also fixedly provided on the outer bottom of the casing 1. The dynamic filtering structure 3 is located between the focusing mirror 21 and the concave reflector 24. The dynamic filtering structure 3 includes a filtering component 31 and a driving component 32. The filtering component 31 can filter out unnecessary low-energy and high-energy gamma rays and only allow medium-energy gamma rays to pass through, thereby reducing background noise and improving the purity and accuracy of the detection data. The driving component 32 can drive the filtering component 31 to rotate.

[0032] See also Figure 4-6Specifically, the filter assembly 31 includes a filter frame 31-1, a low-energy gamma ray filter layer 31-2, and a high-energy gamma ray filter layer 31-3. The filter frame 31-1 is a cylindrical structure with left and right sides open, and the filter frame 31-1 is fixedly arranged on the outer bottom of the housing 1. The focusing lens 21 is located in the filter frame 31-1. The filter frame 31-1 is used to support the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. The inner wall of the filter frame 31-1 is provided with two circular sliding The low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 are respectively connected to the two circular sliding grooves in a sliding manner. The low-energy gamma ray filter layer 31-2 is close to the concave reflector 24, and the high-energy gamma ray filter layer 31-3 is close to the focusing mirror 21. After passing through the concave reflector 24, the rays will first pass through the low-energy gamma ray filter layer 31-2. The low-energy gamma ray filter layer 31-2 can absorb low-energy gamma rays and allow medium-energy gamma rays to pass through. After passing through the ray filter layer 31-2, the retained medium-energy and high-energy gamma rays will continue to pass through the high-energy gamma ray filter layer 31-3. The high-energy gamma ray filter layer 31-3 can absorb the high-energy gamma rays and allow the medium-energy gamma rays to pass through. Finally, the medium-energy gamma rays will be focused by the focusing lens 21 and come into contact with the sodium iodide crystals of the sodium iodide detector, which will analyze them. The drive component 32 is set on the filter frame 31-1, and the drive component 32 is connected to the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. The low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 can rotate under the drive of the drive component 32. The drive component 32 enables the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 to rotate, ensuring that every part of the filter layer can be fully utilized, avoiding resource waste caused by uneven filtration, reducing aging of the filter layer, and extending its service life.

[0033] See also Figure 6-7Specifically, the driving assembly 32 includes a rotating shaft 32-1, a motor 32-2, a driving shaft 32-3, a first bevel gear 32-4 and a second bevel gear 32-5. The rotating shaft 32-1 is fixedly arranged between the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. The rotating shaft 32-1 plays the role of connecting and supporting the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. The motor 32-2 is fixedly arranged on the outer rear side of the filter frame 31-1 to provide power for the driving assembly 32. The driving shaft 32-3 is rotatably connected to the rear side of the filter frame 31-1. The first bevel gear 32-4 and the second bevel gear 32-5 are connected to each other, and one end of the driving shaft 32-3 is fixedly connected to the driving end of the motor 32-2 for transmitting the power of the motor 32-2. The first bevel gear 32-4 is fixedly set on the other end of the driving shaft 32-3, and the second bevel gear 32-5 is fixedly set on the rotating shaft 32-1, and the second bevel gear 32-5 is located on the front side of the first bevel gear 32-4. The second bevel gear 32-5 is meshed with the first bevel gear 32-4. The first bevel gear 32-4 and the second bevel gear 32-5 are used to transmit power and drive the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 to rotate.

[0034] See also Figure 6-7 Specifically, the dynamic filtering structure 3 also includes a heat dissipation component 33 for dissipating heat from the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. The heat dissipation component 33 is used to discharge the heat generated by the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 during filtering in a timely manner to prevent heat accumulation.

[0035] See also Figure 6-7 Specifically, the heat dissipation assembly 33 includes a transmission shaft 33-1, a third bevel gear 33-2 and a fan blade 33-3. The transmission shaft 33-1 is rotatably connected to the front side of the filter frame 31-1. The third bevel gear 33-2 is fixedly arranged at one end of the transmission shaft 33-1, and the third bevel gear 33-2 is located in front of the second bevel gear 32-5. The third bevel gear 33-2 is meshed with the second bevel gear 32-5. The fan blade 33-3 is fixedly arranged at the other end of the transmission shaft 33-1. A ventilation hole is opened on the front side of the filter frame 31-1, and the ventilation hole corresponds to the position of the fan blade 33-3. The transmission shaft 33-1 will drive the fan blade 33-3 to rotate synchronously under the transmission of the third bevel gear 33-2 and the second bevel gear 32-5, thereby discharging the heat generated by the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 through the ventilation hole.

[0036] See also Figure 5-6Specifically, the heat dissipation assembly 33 also includes multiple sets of heat dissipation vents 33-4, which are evenly distributed at the top and bottom of the filter frame 31-1. The heat dissipation vents 33-4 are tilted toward the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. When the fan blades 33-3 rotate, air is drawn into the filter frame 31-1 through the heat dissipation vents 33-4. The heat dissipation vents 33-4 are tilted toward the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. This tilted arrangement helps the air entering the heat dissipation vents 33-4 flow along the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3, thereby removing heat. The tilted arrangement of the heat dissipation vents 33-4 allows air to more effectively contact the filter layers, thereby improving the heat dissipation effect. Furthermore, the heat dissipation vents 33-4, combined with the rotation of the filter layers, further enhance the heat dissipation effect. As the filter layer rotates, air entering through heat dissipation vents 33-4 contacts different surfaces of the filter layer, ensuring that heat is fully removed from the filter layer. This design not only improves heat dissipation efficiency but also ensures the stability and reliability of the filter layer during long-term operation. The combination of multiple heat dissipation vents 33-4 in heat dissipation assembly 33 and drive assembly 32 achieves dynamic heat dissipation from the filter layer.

[0037] See also Figure 5 Specifically, the low-energy gamma ray filter layer 31-2 is made of aluminum or beryllium, while the high-energy gamma ray filter layer 31-3 is made of lead or tungsten. The filtering surfaces of both the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 are wavy. The wavy shapes of the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 increase the filtering surface area, thereby providing more filtering paths and absorbing and filtering more gamma rays.

[0038] See also Figure 5 Specifically, the drive shaft 32-3 and the filter frame 31-1, as well as the transmission shaft 33-1 and the filter frame 31-1, are rotatably connected via sealed bearings. The sealed bearing connection greatly increases the stability of the drive shaft 32-3 and the transmission shaft 33-1 during rotation.

[0039] See also Figure 1-2 as well as Figure 9 Specifically, a protective structure 4 for protecting the focus enhancement structure 2 is further provided on the outer wall of the housing 1. The protective structure 4 can isolate the focus enhancement structure 2 from the external environment and prevent possible dangerous factors from damaging the focus enhancement structure 2.

[0040] See also Figure 1-2 as well as Figure 9Specifically, the protective structure 4 includes two sliders 41, a protective shell 42, two electric telescopic rods 43, and two connecting plates 44. Two slideways are provided on the outer wall of the housing 1, and the two sliders 41 are slidably connected to the two slideways, respectively. The inner wall of the protective shell 42 is fixedly connected to the two sliders 41, and both sides of the protective shell 42 are open. The two electric telescopic rods 43 are fixedly mounted on the outer wall of the housing 1, and the two connecting plates 44 are fixedly mounted on the driving ends of the two electric telescopic rods 43. The two connecting plates 44 are fixedly mounted on the outer wall of the protective shell 42. The electric telescopic rods 43 can drive the protective shell 42 to move, thereby achieving dynamic protection for the focus enhancement structure 2.

[0041] Working principle:

[0042] The working principle of the watermark flow monitor is based on the detection of gamma rays downhole by a sodium iodide detector. First, the monitor is lowered into the well using a steel wire rope. During the lowering process, the protective shell 42 of the protective mechanism remains outside the focusing enhancement structure 2, protecting the focusing enhancement structure 2 from damage caused by impact during the lowering process. When the steel wire rope lowers the monitor to the designated position, the staff activates the electric telescopic rod 43. The driving end of the electric telescopic rod 43 contracts, thereby driving the protective shell 42 upward, separating the protective shell 42 from the focusing enhancement structure. At this point, the monitor can be controlled to perform monitoring operations.

[0043] During monitoring, the gamma rays in the well first contact the incident surface of the concave reflector 24, that is, the convex side, and are reflected to the reflective surface of the concave reflector 24. The reflected gamma rays continue to propagate and contact the dynamic filtering structure 3 located between the concave reflector 24 and the focusing mirror 21. The dynamic filtering structure 3 can filter out unnecessary low-energy gamma rays and high-energy gamma rays, allowing qualified medium-energy gamma rays to pass through. After passing through the dynamic filtering structure 3, the medium-energy gamma rays continue to propagate and contact the focusing mirror 21 in the incident port. The focusing mirror 21 can focus the rays to a specific position, usually on a sodium iodide crystal. The function of the focusing mirror 21 is to further converge the filtered gamma rays to ensure that they can accurately reach the sodium iodide crystal, thereby improving detection efficiency and accuracy. Finally, the focused gamma rays contact the sodium iodide crystal, and the sodium iodide detector analyzes them, thereby achieving accurate detection of gamma rays in the well.

[0044] When the filter component 31 in the dynamic filtering structure 3 is filtering, the gamma rays will first pass through the low-energy gamma ray filter layer 31-2 after passing through the concave reflector 24. The low-energy gamma ray filter layer 31-2 can absorb the low-energy gamma rays and allow the medium-energy gamma rays to pass through. After passing through the low-energy gamma ray filter layer 31-2, the retained medium-energy and high-energy gamma rays will continue to pass through the high-energy gamma ray filter layer 31-3. The high-energy gamma ray filter layer 31-3 can absorb the high-energy gamma rays and allow the medium-energy gamma rays to pass through.

[0045] During the filtering process, the motor 32-2 of the driving component 32 in the dynamic filtering structure 3 will drive the driving shaft 32-3 to rotate, and the driving shaft 32-3 will drive the first bevel gear 32-4 to rotate, and the first bevel gear 32-4 will drive the second bevel gear 32-5 engaged therewith to rotate, and the second bevel gear 32-5 will drive the rotating shaft 32-1 and the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 to rotate, ensuring that every part of the filter layer can fully filter and absorb unnecessary gamma rays, avoiding the waste of resources caused by uneven filtration, and at the same time reducing the aging of the filter layer and extending its service life.

[0046] When the drive assembly 32 rotates, the heat dissipation assembly 33 and the drive assembly 32 share a drive source, so the heat dissipation assembly 33 will be turned on synchronously. Due to the rotation of the second bevel gear 32-5 in the drive assembly 32, the third bevel gear 33-2 meshing with it will also rotate synchronously. The third bevel gear 33-2 will drive the transmission shaft 33-1 and the fan blades 33-3 to rotate. When the fan blades 33-3 rotate, they will introduce wind into the filter frame 31-1 through the heat dissipation vents 33-4. The heat dissipation vents 33-4 are tilted toward the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3. This tilted opening helps the wind entering the heat dissipation vents 33-4 flow along the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3, thereby removing heat. The tilted setting of the heat dissipation vents 33-4 allows the wind to contact the filter layer more effectively, thereby improving the heat dissipation effect. In addition, the heat dissipation vents 33-4 are combined with the rotation of the filter layer to further enhance the heat dissipation effect. During the rotation of the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3, the wind entering through the heat dissipation vents 33-4 will contact different surfaces of the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3, ensuring that the heat from the low-energy gamma ray filter layer 31-2 and the high-energy gamma ray filter layer 31-3 is completely removed. This design not only improves heat dissipation efficiency but also ensures the stability and reliability of the filter layer during long-term operation. The combination of the multiple heat dissipation vents 33-4 of the heat dissipation assembly 33 and the drive assembly 32 achieves dynamic heat dissipation of the filter layer.

[0047] Finally, 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water flow monitor, comprising a housing (1), wherein an inlet is provided at the bottom of the housing (1), characterized in that: The invention comprises a focusing enhancement structure (2) and a dynamic filtering structure (3), wherein the focusing enhancement structure (2) is fixedly arranged at the entrance of the bottom of the housing (1), and the focusing enhancement structure (2) is used for focusing gamma rays. The focusing enhancement structure (2) comprises a focusing mirror (21), a plurality of connecting rods (22), an annular bracket (23) and a concave reflecting mirror (24), wherein the focusing mirror (21) is fixedly arranged at the entrance of the bottom of the housing (1), one end of the plurality of connecting rods (22) is fixedly arranged at the bottom of the housing (1), the annular bracket (23) is fixedly arranged at the other end of the plurality of connecting rods (22), and the concave reflecting mirror (24) is fixedly arranged in the annular bracket (23). The incident surface of the concave reflector (24) is a convex side, i.e., a side away from the focusing mirror (21); the reflecting surface of the concave reflector (24) is a concave side, i.e., a side close to the focusing mirror (21); the concave reflector (24) is located below the focusing mirror (21); and the optical center axes of the focusing mirror (21) and the concave reflector (24) are aligned with each other to form a coordinated optical path; a dynamic filtering structure (3) for filtering redundant rays is also fixedly provided on the outer bottom of the housing (1); the dynamic filtering structure (3) is located between the focusing mirror (21) and the concave reflector (24); and the dynamic filtering structure (3) includes a filtering component (31) and a driving component (32); The filter assembly (31) comprises a filter frame (31-1), a low-energy gamma ray filter layer (31-2) and a high-energy gamma ray filter layer (31-3); The driving component (32) is arranged on the filter frame (31-1), and the driving component (32) is connected to the low-energy gamma ray filter layer (31-2) and the high-energy gamma ray filter layer (31-3).

2. The water flow monitor according to claim 1, characterized in that: The filter frame (31-1) is a cylindrical structure with left and right sides open, and the filter frame (31-1) is fixedly arranged on the outer bottom of the casing (1). The focusing mirror (21) is located in the filter frame (31-1). Two circular sliding grooves are opened on the inner wall of the filter frame (31-1). The low-energy gamma ray filter layer (31-2) and the high-energy gamma ray filter layer (31-3) are respectively slidably connected to the two circular sliding grooves. The low-energy gamma ray filter layer (31-2) is close to the concave reflector (24), and the high-energy gamma ray filter layer (31-3) is close to the focusing mirror (21). The low-energy gamma ray filter layer (31-2) and the high-energy gamma ray filter layer (31-3) can rotate under the drive of the driving component (32).

3. The water flow monitor according to claim 2, characterized in that: The driving assembly (32) comprises a rotating shaft (32-1), a motor (32-2), a driving shaft (32-3), a first bevel gear (32-4) and a second bevel gear (32-5); the rotating shaft (32-1) is fixedly arranged between the low-energy gamma ray filter layer (31-2) and the high-energy gamma ray filter layer (31-3); the motor (32-2) is fixedly arranged on the outer rear side of the filter frame (31-1); the driving shaft (32-3) and the filter frame (31-1) are fixedly arranged on the outer rear side of the filter frame (31-1); The first bevel gear (32-4) is fixedly arranged on the other end of the driving shaft (32-3); the second bevel gear (32-5) is fixedly arranged on the rotating shaft (32-1); the second bevel gear (32-5) is located on the front side of the first bevel gear (32-4); and the second bevel gear (32-5) is meshed with the first bevel gear (32-4).

4. The water flow monitor according to claim 3, characterized in that: The dynamic filtering structure (3) further comprises a heat dissipation component (33) for dissipating heat from the low-energy gamma ray filtering layer (31-2) and the high-energy gamma ray filtering layer (31-3).

5. The water flow monitor according to claim 4, characterized in that: The heat dissipation component (33) comprises a transmission shaft (33-1), a third bevel gear (33-2) and a fan blade (33-3); the transmission shaft (33-1) is rotatably connected to the front side of the filter frame (31-1); the third bevel gear (33-2) is fixedly arranged at one end of the transmission shaft (33-1), and the third bevel gear (33-2) is located at the front side of the second bevel gear (32-5); the third bevel gear (33-2) is meshed with the second bevel gear (32-5); the fan blade (33-3) is fixedly arranged at the other end of the transmission shaft (33-1); a ventilation opening is provided on the front side of the filter frame (31-1), and the ventilation opening corresponds to the position of the fan blade (33-3).

6. The water flow monitor according to claim 5, characterized in that: The heat dissipation component (33) further comprises a plurality of heat dissipation openings (33-4), wherein the plurality of heat dissipation openings (33-4) are respectively and evenly arranged on the top and bottom of the filter frame (31-1), and the heat dissipation openings (33-4) are respectively arranged obliquely toward the low-energy gamma ray filter layer (31-2) and the high-energy gamma ray filter layer (31-3).

7. The water flow monitor according to claim 6, characterized in that: The low-energy gamma ray filter layer (31-2) is made of metal materials such as aluminum or beryllium, and the high-energy gamma ray filter layer (31-3) is made of metal materials such as lead or tungsten. The filtering surfaces of the low-energy gamma ray filter layer (31-2) and the high-energy gamma ray filter layer (31-3) are both wavy.

8. The water flow monitor according to claim 7, characterized in that: The driving shaft (32-3) and the filter frame (31-1), as well as the transmission shaft (33-1) and the filter frame (31-1), are rotatably connected via sealed bearings.

9. The water ripple flow monitor according to claim 8, characterized in that: A protective structure (4) for protecting the focusing enhancement structure (2) is also provided on the outer wall of the housing (1).

10. The water flow monitor according to claim 9, characterized in that: The protective structure (4) comprises two sliders (41), a protective shell (42), two electric telescopic rods (43) and two connecting plates (44); the outer wall of the housing (1) is provided with two slideways; the two sliders (41) are respectively slidably connected to the two slideways; the inner wall of the protective shell (42) is fixedly connected to the two sliders (41); and both sides of the protective shell (42) are open; the two electric telescopic rods (43) are fixedly arranged on the outer wall of the housing (1); the two connecting plates (44) are fixedly arranged on the driving ends of the two electric telescopic rods (43); and the two connecting plates (44) are fixedly arranged on the outer wall of the protective shell (42).

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