A connector for full tube metering of a groundwater machine well
Patent Information
- Application Number
- CN202522534821.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-28
AI Technical Summary
[0005]本实用新型的目的是提供一种地下水机井满管计量用连接器，通过主管道与整流清洁机构的配合，以解决现有技术中杂质易在计量装置内部沉积、流态紊乱影响计量精度与设备寿命的问题
通过主管道与整流清洁机构的配合，通过整流清洁机构中环形分布的通过孔与锥形管形成的环状楔形空间的协同作用，在进水端即对大颗粒杂质进行导向并利用水流自清洁管壁，从源头有效防止堵塞；紧接着，通过第一整流器的蜂窝模块与第二整流器的平行导流片进行多级整流，将紊乱的水流梳理为平稳的层流，极大消除了湍流与旋流对计量的干扰；在此基础上，文丘里管结构一方面利用其喉部加速效应为流量检测创造高灵敏度条件，另一方面其与旁路排气测量舱的独特连接方式，利用压差驱动含气泡水流进入旁路，并由倒锥形收集器高效集气，最终通过垂直测量管顶部的排气阀自动排出，确保了主管道始终处于满管状态，从而为实现高精度、高可靠性及低维护成本的机井计量提供了根本保障。
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Figure CN224920040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metering connector technology, specifically to a connector for metering full pipes in underground water wells. Background Technology
[0002] As a major agricultural country, my country relies heavily on groundwater wells for irrigation. Accurate measurement of well output is a fundamental and crucial task for efficient water resource management and conservation. Currently, installing full-pipe flow meters at well outlets is the mainstream measurement method. However, in practical applications, especially in agricultural irrigation scenarios, these metering devices face numerous significant challenges.
[0003] First, groundwater generally contains solid impurities such as silt and sand. These impurities easily accumulate inside metering devices, clogging flow channels or jamming moving parts, leading to metering malfunctions or even equipment damage, requiring frequent and costly maintenance and cleaning. Second, during pump start-up, shutdown, and operation, air is easily drawn into the pipeline. Combined with the release of dissolved gases from the water, air pockets can easily form at higher points in the pipeline, compromising the prerequisite of "full pipe" for accurate metering and causing severely distorted measurement results. Third, the flow pattern at pump outlets is typically turbulent, with intense turbulence and swirling currents. This unstable flow field directly impacts the sensitive elements of flow sensors (such as turbine impellers), causing drastic fluctuations in readings and accelerating mechanical wear, significantly affecting metering accuracy and equipment lifespan.
[0004] Therefore, it is necessary to invent a connector for metering full pipes in underground water wells to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a connector for metering full pipes in groundwater wells. By cooperating with the main pipeline and the rectifier and cleaning mechanism, it solves the problems in the prior art where impurities easily deposit inside the metering device and the flow turbulence affects the metering accuracy and equipment lifespan.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a connector for metering full pipes in underground water wells, comprising a main pipe, a rectifier and cleaning mechanism fixedly connected to the bottom end of the main pipe, the rectifier and cleaning mechanism comprising a rectifier tube fixedly connected to the bottom end of the main pipe, the bottom diameter of the rectifier tube being larger than the top diameter, a perforated plate fixedly connected to the bottom end of the rectifier tube, the surface of the perforated plate having several sets of through holes arranged in a ring, the through holes being offset from the central axis area of the perforated plate, a tapered tube being provided above the perforated plate and fixedly connected to the inner wall of the rectifier tube, several sets of reinforcing ribs being fixedly connected to the outer wall of the tapered tube, the through holes corresponding to the positions of the tapered tube, the lower edge of the tapered tube being inclined outward to form an annular wedge-shaped space with the inner wall of the rectifier tube, a first rectifier and a second rectifier being provided above the perforated plate, the water flow being collected through the rectifier tube, and the primary impurity distribution and rectification being performed using the non-uniform through holes of the perforated plate.
[0007] Preferably, both the first rectifier and the second rectifier are fixedly connected to the inner wall of the rectifier tube. The first rectifier has a honeycomb rectifier module with a large number of parallel microchannels, which breaks the large-scale eddies in the water flow after preliminary cleaning and distribution into small, uniform micro-scale eddies.
[0008] Preferably, the second rectifier is composed of parallel guide vanes, and a venturi tube is fixedly connected to the inner wall of the main pipe and the venturi tube is located above the second rectifier, so as to sort the water flow after coarse rectification into a laminar flow with consistent direction and stability.
[0009] Preferably, a bypass exhaust measurement chamber is fixedly connected to the outer wall of the main pipeline. One side of the bypass exhaust measurement chamber is connected to an upper channel, and the other side of the bypass exhaust measurement chamber is connected to a lower channel. The chamber is connected in parallel with the main pipeline through the upper and lower channels to form an independent functional loop.
[0010] Preferably, the lower channel passes through the venturi tube and the main pipe and is located at the throat of the venturi tube near the end of the contraction section, and the upper channel passes through the venturi tube and the main pipe and is located at the throat of the venturi tube near the beginning of the expansion section. The pressure difference before and after the throat of the venturi tube is used as the power to drive a portion of the water flow (including air bubbles) into the bypass exhaust measurement chamber, while ensuring that the water flow after gas separation can flow smoothly back to the main pipe.
[0011] Preferably, an inverted cone-shaped collector is fixedly connected to the bottom of the internal cavity of the bypass exhaust measurement chamber, and a vertical measuring tube is fixedly connected to the top of the inverted cone-shaped collector and the vertical measuring tube communicates with the inverted cone-shaped collector. The enlarged cross-sectional area of the vertical measuring tube slows down the water flow and promotes bubble separation.
[0012] Preferably, the vertical measuring tube is provided with a lower channel and a flow sensor inside, and a sealed cover is installed at the top of the vertical measuring tube, with an exhaust valve installed inside the sealed cover, so as to realize flow calculation and exhaust.
[0013] Preferably, the top end of the main pipe is fixedly connected to a water outlet flange, and the bottom end of the rectifier pipe is fixedly connected to a water inlet flange. The water inlet flange is used to connect to the water pump outlet pipe, and the water outlet flange is used to connect to the irrigation or water supply network.
[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: Through the cooperation of the main pipeline and the rectifier cleaning mechanism, and the synergistic effect of the annular through holes and the annular wedge-shaped space formed by the conical tube in the rectifier cleaning mechanism, large particulate impurities are guided at the water inlet and the water flow self-cleans the pipe wall, effectively preventing blockage at the source. Then, through the honeycomb module of the first rectifier and the parallel guide vanes of the second rectifier, multi-stage rectification is carried out to transform the turbulent water flow into a stable laminar flow, greatly eliminating the interference of turbulence and vortex on the metering. On this basis, the Venturi tube structure, on the one hand, uses its throat acceleration effect to create high-sensitivity conditions for flow detection, and on the other hand, its unique connection method with the bypass exhaust measurement chamber uses pressure difference to drive the water flow containing air bubbles into the bypass, and the inverted conical collector efficiently collects the air, which is finally automatically discharged through the exhaust valve at the top of the vertical measurement tube, ensuring that the main pipeline is always in a full pipe state. This provides a fundamental guarantee for achieving high-precision, high-reliability and low-maintenance well metering. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0016] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.
[0017] Explanation of reference numerals in the attached figures: 1. Main pipe; 2. Rectifying and cleaning mechanism; 201. Rectifying tube; 202. Perforated plate; 203. Through hole; 204. Tapered tube; 205. First rectifier; 206. Second rectifier; 207. Reinforcing rib; 3. Inlet flange; 4. Bypass exhaust measurement chamber; 5. Outlet flange; 6. Sealed chamber cover; 7. Venturi tube; 8. Upper channel; 9. Lower channel; 10. Inverted cone collector; 11. Vertical measuring tube. Detailed Implementation
[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0019] This utility model provides, for example Figure 1-4 The connector shown is for metering a full pipe in a groundwater well. It includes a main pipe 1, with a rectifier and cleaning mechanism 2 fixedly connected to the bottom end of the main pipe 1. The rectifier and cleaning mechanism 2 includes a rectifier tube 201 fixedly connected to the bottom end of the main pipe 1. The bottom diameter of the rectifier tube 201 is larger than its top diameter. A perforated plate 202 is fixedly connected to the bottom end of the rectifier tube 201. Several sets of through holes 203 are formed on the surface of the perforated plate 202 and are arranged in a ring. The through holes 203 are offset from the central axis of the perforated plate 202. A tapered tube 204 is positioned above the perforated plate 202 and is fixedly connected to the inner wall of the rectifier tube 201. Several sets of reinforcing ribs 207 are fixedly connected to the outer wall of the tapered tube 204. The positions of the through holes 203 and the tapered tube 204 correspond, and the lower edge of the tapered tube 204 is inclined outwards. A ring-shaped wedge-shaped space is formed with the inner wall of the rectifier tube 201. A first rectifier 205 and a second rectifier 206 are arranged above the perforated plate 202. The water flow is gathered by the rectifier tube 201, and the primary impurities are distributed and rectified by the non-uniform through holes 203 of the perforated plate 202. The first rectifier 205 and the second rectifier 206 are both fixedly connected to the inner wall of the rectifier tube 201. The first rectifier 205 has a honeycomb rectifier module with a large number of parallel microchannels, which breaks the large-scale eddies in the water flow after preliminary cleaning and distribution into small, uniform micro-scale eddies. The second rectifier 206 is composed of mutually parallel guide vanes. A venturi tube 7 is fixedly connected to the inner wall of the main pipe 1 and is located above the second rectifier 206, which sorts the water flow after coarse rectification into a consistent and stable laminar flow.
[0020] Refer to the instruction manual appendix Figure 1-4A bypass venting measurement chamber 4 is fixedly connected to the outer wall of the main pipe 1. One side of the bypass venting measurement chamber 4 is connected to an upper channel 8, and the other side is connected to a lower channel 9. The chamber is connected in parallel with the main pipe 1 through the upper channel 8 and the lower channel 9, forming an independent functional loop. The lower channel 9 passes through the Venturi tube 7 and the main pipe 1 and is located near the end of the contraction section at the throat of the Venturi tube 7. The upper channel 8 passes through the Venturi tube 7 and the main pipe 1 and is located near the beginning of the expansion section at the throat of the Venturi tube 7. The pressure difference before and after the throat of the Venturi tube 7 is used to drive a portion of the water flow containing air bubbles into the bypass venting chamber. The bypass exhaust measurement chamber 4 provides power and ensures that the water flow after gas separation can smoothly return to the main pipeline 1. An inverted cone-shaped collector 10 is fixedly connected to the bottom of the internal cavity of the bypass exhaust measurement chamber 4. A vertical measuring tube 11 is fixedly connected to the top of the inverted cone-shaped collector 10, and the vertical measuring tube 11 communicates with the inverted cone-shaped collector 10. Its enlarged cross-sectional area slows down the water flow, promoting bubble separation. A lower channel 9 and a flow sensor are installed inside the vertical measuring tube 11. A sealed cover 6 is installed at the top of the vertical measuring tube 11, and an exhaust valve is installed inside the sealed cover 6 to realize flow calculation and exhaust. The main pipeline... The top of the main pipe 1 is fixedly connected to the outlet flange 5, and the bottom of the rectifier pipe 201 is fixedly connected to the inlet flange 3. The inlet flange 3 is used to connect to the water pump outlet pipe, and the outlet flange 5 is used to connect to the irrigation or water supply network. Through the cooperation of the main pipe 1 and the rectifier cleaning mechanism 2, and through the synergistic effect of the annularly distributed through holes 203 and the annular wedge-shaped space formed by the tapered pipe 204 in the rectifier cleaning mechanism 2, large particles of impurities are guided at the inlet end, and the water flow is used to self-clean the pipe wall, effectively preventing blockage from the source. Then, through the honeycomb module of the first rectifier 205 and the parallel guide plate of the second rectifier 206, the water enters the main pipe. Multi-stage rectification transforms turbulent water flow into stable laminar flow, greatly eliminating the interference of turbulence and vortex on measurement. On this basis, the Venturi tube 7 structure utilizes its throat acceleration effect to create high-sensitivity conditions for flow detection. Furthermore, its unique connection with the bypass exhaust measurement chamber 4 uses pressure difference to drive the bubble-containing water flow into the bypass, where it is efficiently collected by the inverted cone collector 10 and finally automatically discharged through the exhaust valve at the top of the vertical measuring pipe 11. This ensures that the main pipe 1 is always in a full-pipe state, thus providing a fundamental guarantee for achieving high-precision, high-reliability, and low-maintenance well measurement.
[0021] The working principle of this practical application is as follows: Refer to the instruction manual appendix Figure 1-4During operation, water flows into the rectifier pipe 201 through the inlet flange 3, first impacting the perforated plate 202. The annularly distributed through holes 203 force a redistribution of the water flow, guiding most large particles of impurities to one side of the pipe wall under inertia. As the water continues upward, it is forced to the inner wall of the rectifier pipe 201 through the annular wedge-shaped space at the lower edge of the conical pipe 204, creating a scouring effect on any adhering substances and achieving self-cleaning. Subsequently, the water flows sequentially through the honeycomb module of the first rectifier 205, breaking large eddies into smaller eddies. Then, it is combed by the parallel guide vanes of the second rectifier 206, forming a stable laminar flow with parallel streamlines. After the steady water flow enters the Venturi tube 7, it accelerates in the contraction section, reaches its maximum velocity at the throat, and the pressure drops to its minimum, causing dissolved gases in the water to precipitate. At this time, under the action of pressure difference and the buoyancy of the bubbles themselves, the bubble-rich water flow is drawn into the inverted cone-shaped collector 10 at the bottom of the bypass exhaust measurement chamber 4 through the lower channel 9. The reduced flow velocity allows the bubbles to separate and rise, while the water flow enters the vertical measurement tube 11 to drive the flow sensor inside for precise measurement. The separated gas gathers at the top of the chamber and is automatically discharged by the exhaust valve on the sealed chamber cover 6. The degassed water flow returns to the expansion section of the Venturi tube 7 through the upper channel 8, merges with the main water flow, and finally flows out through the outlet flange 5, thus ensuring the accuracy and stability of the measurement throughout the entire process.
[0022] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A connector for metering full pipes in groundwater wells, comprising a main pipe (1), characterized in that: A rectifier and cleaning mechanism (2) is fixedly connected to the bottom end of the main pipe (1). The rectifier and cleaning mechanism (2) includes a rectifier tube (201) fixedly connected to the bottom end of the main pipe (1). The bottom diameter of the rectifier tube (201) is larger than the top diameter. A perforated plate (202) is fixedly connected to the bottom end of the rectifier tube (201). Several sets of through holes (203) are opened on the surface of the perforated plate (202) and the through holes (203) are distributed in a ring. The through holes (203) are offset from the central axis area of the perforated plate (202). A tapered tube (204) is provided above the perforated plate (202) and the tapered tube (204) is fixedly connected to the inner wall of the rectifier tube (201). Several sets of reinforcing ribs (207) are fixedly connected to the outer wall of the tapered tube (204). The through hole (203) corresponds to the position of the tapered tube (204). The lower edge of the tapered tube (204) is inclined outward to form an annular wedge-shaped space with the inner wall of the rectifier tube (201). A first rectifier (205) and a second rectifier (206) are provided above the perforated plate (202).
2. The connector for metering full pipes in groundwater wells according to claim 1, characterized in that: The first rectifier (205) and the second rectifier (206) are both fixedly connected to the inner wall of the rectifier tube (201). The first rectifier (205) has a honeycomb rectifier module with a large number of parallel microchannels.
3. The connector for metering full pipes in groundwater wells according to claim 1, characterized in that: The second rectifier (206) is composed of parallel guide vanes. The inner wall of the main pipe (1) is fixedly connected to a venturi tube (7) and the venturi tube (7) is located above the second rectifier (206).
4. A connector for metering full pipes in groundwater wells according to claim 1, characterized in that: The main pipe (1) is fixedly connected to a bypass exhaust measurement chamber (4) on its outer side wall. The bypass exhaust measurement chamber (4) is connected to an upper channel (8) on one side and to a lower channel (9) on the other side.
5. A connector for metering full pipes in groundwater wells according to claim 4, characterized in that: The lower channel (9) passes through the Venturi tube (7) and the main pipe (1) and is located at the throat of the Venturi tube (7) near the end of the contraction section. The upper channel (8) passes through the Venturi tube (7) and the main pipe (1) and is located at the throat of the Venturi tube (7) near the beginning of the expansion section.
6. A connector for metering full pipes in groundwater wells according to claim 4, characterized in that: The bottom of the internal cavity of the bypass exhaust measurement chamber (4) is fixedly connected to an inverted cone-shaped collector (10), and the top of the inverted cone-shaped collector (10) is fixedly connected to a vertical measuring tube (11), which is connected to the inverted cone-shaped collector (10).
7. A connector for metering full pipes in groundwater wells according to claim 6, characterized in that: The vertical measuring tube (11) is provided with a lower channel (9) and a flow sensor inside. The top of the vertical measuring tube (11) is equipped with a sealed cover (6) and an exhaust valve is installed inside the sealed cover (6).
8. A connector for metering full pipes in groundwater wells according to claim 1, characterized in that: The top end of the main pipe (1) is fixedly connected to a water outlet flange (5), and the bottom end of the rectifier pipe (201) is fixedly connected to a water inlet flange (3).