Quick plug-in target flowmeter

Abstract

The utility model discloses a kind of quick plug-in target type flowmeter, it is related to flowmeter equipment technical field, including hoop, internal thread base and internal thread type mounting nut, the hoop is tightened on the outer wall of process pipeline, the both ends of the hoop are bolted to the internal thread base is compressed in the aperture of process pipeline place.The utility model greatly improves installation efficiency by welding-free installation mode, avoids the safety risk and complex process of hot work operation, is applicable to flammable and explosive special working condition, through multiple sealing structure of pipeline sealing gasket and internal thread type and tight nut, the reliable sealing and long-term pressure-bearing capacity of interface are ensured, effectively prevent medium leakage, in addition, the modular design makes instrument main body can be quickly plugged, simplifies later maintenance, verification or replacement process, and stable mechanical structure can effectively resist fluid impact and pipeline vibration, ensure the stability of measurement.

Description

Technical Field

[0001] This utility model relates to the field of flow meter equipment technology, specifically a quick-insertion target flow meter. Background Technology

[0002] With the booming development of the flow meter industry, in addition to reserving sufficient space for the installation of suitable flow meters at the initial design stage, when additional flow measurement points need to be added in the later stages of use and actual process requirements, the existing solution is often to open holes in the existing pipeline, then weld the instrument installation short circuit, and then install the instrument. This method is often difficult to meet the needs of scenarios where open flames cannot be used, or where it is at high altitudes, underground, or where electricity is inconvenient. Furthermore, it requires carrying welding equipment, and the welding condition also needs to be checked, which places high demands on the professional quality of the operators.

[0003] Patent document CN109520583A discloses a small-flow insertion flow meter, which includes a display device, a flow sensor, a target rod, a leaf spring, and a connecting and fixing device. The display device is disposed on the upper end of the flow sensor, the flow sensor is fixedly connected to the upper end of the target rod, the lower end of the target rod is connected to the leaf spring, and the connecting and fixing device is disposed on the outside of the target rod. The connecting and fixing device includes a flange base and a flange short section connected by bolts, and a base connector is also provided between the flange short section and the target rod. The flow meter also includes a reduced-diameter tube, and the leaf spring is disposed inside the flow channel formed by the reduced-diameter tube. This invention provides a small-flow insertion flow meter with a flow channel in a large pipeline, and the leaf spring is disposed in the flow channel, which improves the measurement accuracy when measuring small-flow fluids.

[0004] However, the small-flow insertion flowmeters mentioned in the above-mentioned published documents have technical problems in their use, which rely on hot work operations such as welding for installation. This results in low installation efficiency, high safety risks, and extremely inconvenient maintenance and replacement under special working conditions such as flammable and explosive environments.

[0005] In view of this, it is necessary to develop a quick-insertion target flow meter, which can improve the installation efficiency of the target flow meter during use. Utility Model Content

[0006] The purpose of this invention is to provide a quick-insertion target flow meter to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-insertion target flow meter, comprising a clamp, an internally threaded base, and an internally threaded mounting nut;

[0008] The clamp is tightened to the outer wall of the process pipe, and the two ends of the clamp are used to press the internal thread base into the opening of the process pipe by bolts.

[0009] A pipe sealing gasket is provided between the internal thread base and the process pipe;

[0010] The inner wall of the internal thread base is threadedly connected to an internal thread sealing base. The top of the inner wall of the internal thread sealing base is threadedly connected to an internal thread mounting nut. The inner wall of the internal thread mounting nut is sleeved with an instrument body. The bottom of the outer wall of the instrument body is fixedly connected to a sensor mounting base, and the sensor mounting base is located between the internal thread sealing base and the internal thread mounting nut.

[0011] The outer wall of the internally threaded sealing base is threaded with an internally threaded tightening nut.

[0012] Preferably, it also includes a field base welded and fixed to the opening of the process pipeline, used to replace the internal thread base and the internal thread sealing base. The top of the outer wall of the field base is threaded with an external thread mounting nut, and a sensor mounting base is provided between the field base and the external thread mounting nut.

[0013] Preferably, the sensor mounting base is provided with a positioning protrusion, and the internal threaded sealing base or the field base is provided with a recessed part that matches the positioning protrusion to achieve positioning fit.

[0014] Preferably, the instrument body includes a sealed conduit threaded to the bottom of the sensor mounting base, the outer wall of the sealed conduit is fitted with a plurality of O-rings, and the outer wall of the O-rings is movably connected to the inner wall of the internally threaded sealing base or the field base.

[0015] Preferably, a connecting pipe is threaded to the top of the outer wall of the sensor mounting base, and the top of the connecting pipe is connected to the instrument totalizing part by a nut.

[0016] Preferably, the outer wall of the connecting pipe is provided with an elastic retaining ring.

[0017] Preferably, it also includes a remote transmission cable, the two ends of which are electrically connected to the instrument totalizing section and the connecting pipe, respectively.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model greatly improves installation efficiency through a welding-free installation method, avoiding the safety risks and complex processes of hot work. It is suitable for flammable and explosive special working conditions. The multi-seal structure composed of pipe sealing gaskets and internally threaded tightening nuts ensures reliable sealing and long-term pressure resistance at the interface, effectively preventing media leakage. In addition, the modular design allows the instrument body to be quickly plugged in and out, simplifying the later maintenance, calibration or replacement process, while the robust mechanical structure can effectively resist fluid impact and pipeline vibration, ensuring measurement stability.

[0020] 2. This utility model significantly enhances the versatility and adaptability of the product by providing a welded fixed field base as an optional option. This design retains the permanent fixation and ultra-high structural strength brought by the traditional welding method, which can be reliably applied to working conditions with severe vibration or requiring long-term stable measurement. It also inherits the core advantages of modular design. By tightening the sensor mounting base with an external threaded mounting nut, the instrument part can be quickly installed and conveniently maintained without hot work. This compatible design allows a single product to meet the adjustment of multiple installation forms at the same time, providing a flexible and economical solution and simplifying spare parts management and inventory.

[0021] 3. This utility model, through a positioning and mating structure formed by the positioning protrusion on the sensor mounting base and the corresponding recessed part in the internal threaded sealing base or field base, ensures that the instrument body can quickly and accurately reproduce the unique insertion depth and angle each time it is installed, guaranteeing the optimal position of the target in the flow field and the accuracy of measurement. At the same time, this structure effectively prevents the sensor from rotating circumferentially due to fluid impact or vibration, avoiding signal line twisting and reading fluctuations, and significantly improving the long-term stability and reliability of the measurement. In addition, this positioning design helps to simplify the installation and maintenance process, avoid human error, and improve ease of use.

[0022] 4. This utility model constructs a multi-redundant sealing barrier by setting multiple O-rings on the outer wall of the sealing conduit, forming a tight dynamic sealing interface with the inner wall of the internal threaded sealing base or field base. This greatly improves the sealing reliability and safety, effectively resisting media pressure and preventing leakage. At the same time, the elastic characteristics of the O-rings allow for slight radial compensation in the sealing conduit, effectively absorbing installation deviations or pipeline stress and avoiding jamming. Furthermore, the low friction characteristics of the O-rings make the insertion and removal of the instrument body easier and smoother, meeting the design requirements for quick installation and maintenance. Replacement is also simple and inexpensive, which helps to reduce the difficulty and cost of later maintenance.

[0023] 5. This utility model uses a modular interface formed by the nut and connecting tube for quick separation, so that the sensor and sealing structure below can be calibrated, repaired or replaced without disturbing them, greatly simplifying maintenance operations. The elastic retaining ring on the outer wall of the connecting tube provides mechanical limit for the internal or external threaded mounting nut, effectively preventing movement and impact during transportation or use, significantly improving the stability and reliability of the product. The fully sealed design of the remote transmission cable not only solves the problem of reading the instrument status in situations with limited installation space and realizes long-distance transmission between the sensor and the totalizing part, but also adapts to harsh working conditions such as underwater metering through excellent sealing characteristics, comprehensively improving the environmental adaptability and service life of the product. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal thread type mounting base structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the main structure of the instrument of this utility model;

[0027] Figure 4 Comparison of external thread installation and internal thread installation schematics of this utility model;

[0028] Figure 5 This is a schematic diagram of the split display structure of the present invention when using a remote transmission cable.

[0029] In the diagram: 1. Process piping; 2. Clamp; 3. Internal thread base; 4. Internal thread mounting nut; 5. Instrument body; 6. Pipe gasket; 7. Internal thread sealing base; 8. Internal thread tightening nut; 9. Instrument totalizing section; 10. Sealing conduit; 11. O-ring; 12. Sensor mounting base; 13. External thread mounting nut; 14. Elastic retaining ring; 15. Connecting pipe; 16. Field base; 17. Remote transmission cable. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please see Figure 1 , Figure 2 and Figure 3 According to one embodiment of this utility model, a quick-insertion target flow meter includes a clamp 2, an internally threaded base 3, and an internally threaded mounting nut 4. The clamp 2 is clamped to the outer wall of the process pipe 1. The two ends of the clamp 2 are bolted to press the internally threaded base 3 into the opening of the process pipe 1. A pipe sealing gasket 6 is provided between the internally threaded base 3 and the process pipe 1. An internally threaded sealing base 7 is threadedly connected to the inner wall of the internally threaded base 3. An internally threaded mounting nut 4 is threadedly connected to the top of the inner wall of the internally threaded sealing base 7. An instrument body 5 is sleeved on the inner wall of the internally threaded mounting nut 4. A sensor mounting base 12 is fixedly connected to the bottom of the outer wall of the instrument body 5. The sensor mounting base 12 is located between the internally threaded sealing base 7 and the internally threaded mounting nut 4. An internally threaded tightening nut 8 is threadedly connected to the outer wall of the internally threaded sealing base 7.

[0034] Furthermore, the internal thread base 3 is directly pressed onto the pipe by clamp 2 and bolts, which completely eliminates the step of welding the base onto the pipe in the traditional installation method, avoiding the safety risks, complicated approval process and time and labor costs required for welding caused by hot work.

[0035] The static seal between the internal threaded base 3 and the process pipeline 1 is achieved by the pipeline sealing gasket 6, preventing the medium from leaking from the pipeline opening. The first sealing barrier is formed by the thread engagement between the internal threaded sealing base 7 and the internal threaded base 3. The subsequent internal threaded mounting nut and internal threaded tightening nut 8 further compress the internal components, enhancing the overall sealing performance.

[0036] The clamp 2 tightens the process pipe 1 and provides strong clamping force through the bolts at both ends, making the installation foundation of the entire flow meter very solid. At the same time, multiple components are connected by threads, and the structural rigidity is far superior to simple sleeve or snap-fit ​​connections. It can effectively resist fluid impact and pipe vibration, and ensure the stable operation of the flow meter sensor.

[0037] The instrument body 5 is fixed in the base by the internal threaded mounting nut 4. When it is necessary to calibrate, repair or replace the flow meter, simply loosen the internal threaded and tightened nut 8 and the mounting nut 4 to remove the entire instrument body 5 from the base. When disassembling the instrument body 5, the clamp 2 and the internal threaded base 3 are still firmly fixed to the pipeline. After maintenance, they can be directly reinserted and installed. The mechanism is simple and easy to maintain.

[0038] Please see Figure 4 According to one embodiment of the present invention, a quick insertion target flow meter further includes a field base 16 welded and fixed to the opening of the process pipeline 1, which is used to replace the internal thread base 3 and the internal thread sealing base 7. The top of the outer wall of the field base 16 is threadedly connected to an external thread mounting nut 13, and a sensor mounting base 12 is provided between the field base 16 and the external thread mounting nut 13.

[0039] Furthermore, by providing a traditional welding installation method for occasions where the clamp 2 quick installation is not suitable or not required, the same flow meter can adapt to more diverse customer needs and site conditions. The welded field base 16 is integrated with the pipeline, providing a more robust and permanent mechanical connection than the clamp 2, and is suitable for long-term fixed measurement, high vibration or extremely high installation strength requirements.

[0040] Although the base mounting method is different, the upper connection structure and quick installation method share the same concept. The instrument part can still be quickly disassembled and replaced without the need for open flame by unscrewing the nuts, making maintenance simple.

[0041] The sensor mounting base 12 is pressed between the field base 16 and the external threaded mounting nut 13, inheriting the aforementioned positioning and sealing advantages, ensuring the accuracy and reliability of the measurement.

[0042] Please see Figure 1 , Figure 3 and Figure 4In one embodiment of this utility model, a quick-insertion target flow meter is provided, wherein a positioning protrusion is provided on the sensor mounting base 12, and a recessed part adapted to the positioning protrusion is provided in the internal thread sealing base 7 or the field base 16 to achieve positioning fit.

[0043] Furthermore, the cooperation between the positioning protrusions and recesses ensures that the sensor mounting base 12 can quickly and accurately reach the preset and unique correct position each time it is installed. This ensures that the target plate is at the optimal measurement point in the pipeline and obtains accurate flow data. At the same time, this positioning structure can effectively prevent the instrument from rotating circumferentially under the impact or vibration of the pipeline medium, avoiding problems such as damage to the signal line connection, unstable readings or mechanical stress concentration caused by twisting, and ensuring the long-term stability of the measurement.

[0044] Installers do not need to perform tedious adjustments and calibrations. They only need to align the protrusion with the recessed part and insert it, and it will automatically return to its position. This greatly simplifies the installation process, avoids measurement errors caused by human error in installation angle or depth, and facilitates quick on-site maintenance and replacement.

[0045] Precise positioning allows the sensor mounting base 12 to be pressed evenly and directly against the contact surfaces of the upper and lower components, resulting in uniform force on the sealing gasket, greatly improving the reliability and consistency of the seal, and effectively preventing leakage.

[0046] By combining this anti-rotation positioning fit with threaded locking, the entire sensor module and the base form a more rigid whole, significantly improving the structure's resistance to vibration and fluid impact.

[0047] Please see Figure 1 , Figure 3 and Figure 4 According to one embodiment of the present invention, a quick insertion target flow meter is provided. The instrument body 5 includes a sealing conduit 10 threadedly connected to the bottom of the sensor mounting base 12. The outer wall of the sealing conduit 10 is fitted with a plurality of O-rings 11, and the outer wall of the O-rings 11 is movably connected to the inner wall of the internal threaded sealing base 7 or the field base 16.

[0048] Furthermore, the O-ring 11 is compressed between the outer wall of the sealing conduit 10 and the inner wall of the internal threaded sealing base 7 or the field base 16 to form a tight sealing interface, which is directly responsible for preventing the pressure of the medium in the pipeline from leaking into the external environment through the gap of the instrument insertion rod. The design of several O-rings 11 forms multiple independent sealing barriers. Even if one seal is damaged by accident, the subsequent sealing rings can still play a role, which greatly improves the reliability and safety of the sealing system.

[0049] The O-ring 11 has a certain degree of elasticity, which allows the sealing conduit 10 to have a slight radial offset or swing after the instrument is installed or when it is subjected to external force. This compensates for slight misalignment during installation or stress caused by thermal expansion and contraction of the pipeline, avoids jamming or wear of the sealing surface, and improves adaptability.

[0050] Compared to traditional stuffing box seals, O-ring 11 seals have lower frictional resistance, making the insertion and removal of the instrument body 5 easier and smoother.

[0051] When the O-ring 11 ages or is damaged and needs to be replaced, simply pull out the instrument body 5 to easily replace the O-ring 11 fitted on the sealing conduit 10. Moreover, the O-ring 11 has low procurement cost and simple replacement operation, which has the effect of reducing maintenance costs.

[0052] Please see Figure 5 The present invention provides an embodiment of a quick-insertion target flow meter, wherein a connecting pipe 15 is threadedly connected to the top of the outer wall of the sensor mounting base 12, and an instrument totalizing part 9 is connected to the top of the connecting pipe 15 by a nut. An elastic retaining ring 14 is provided on the outer wall of the connecting pipe 15. The invention also includes a remote transmission cable 17, the two ends of which are electrically connected to the instrument totalizing part 9 and the connecting pipe 15, respectively.

[0053] Furthermore, the instrument totalizer 9 is connected to the connecting pipe 15 via a nut, forming a quick-detachable interface. When calibration, repair, or replacement of the totalizer is required, it can be removed independently without disturbing the sensor and sealing structure below, making maintenance operations simpler.

[0054] The elastic retaining ring 14 is installed on the outer wall of the connecting pipe 15. Its function is to provide mechanical limit for the internal thread mounting nut 4 or the external thread mounting nut 13 to prevent it from moving or impacting during transportation or use.

[0055] The installation of the remote transmission cable 17 is beneficial in situations where installation space is limited and it is inconvenient to check the instrument status. It enables the remote transmission between the instrument totalization section 9 and the sensor. It is also fully sealed to prevent the line from being directly exposed to the harsh field environment, thereby enabling underwater measurement and improving service life.

[0056] The working principle is based on a welding-free installation method that greatly improves installation efficiency, avoids the safety risks and complex procedures of hot work, and is suitable for flammable and explosive special working conditions. A multi-seal structure consisting of a pipe sealing gasket 6 and an internally threaded tightening nut 8 ensures reliable sealing and long-term pressure resistance at the interface, effectively preventing media leakage. Furthermore, the modular design allows for quick insertion and removal of the instrument body 5, simplifying subsequent maintenance, calibration, or replacement procedures. The robust mechanical structure effectively resists fluid impact and pipe vibration, ensuring measurement stability. The optional welded fixed field base 16 significantly enhances the product's versatility and adaptability. This design retains the permanent fixation and ultra-high structural advantages of traditional welding methods. With its high strength, it can be reliably applied to working conditions with severe vibration or requiring long-term stable measurement. It also inherits the core advantages of modular design. By using an external threaded mounting nut 13 to tighten the sensor mounting base 12, it achieves rapid installation of the instrument and convenient maintenance without the need for open flame. This compatible design allows a single product to simultaneously meet the adjustment requirements of various installation methods, providing a flexible and economical solution and simplifying spare parts management and inventory. Furthermore, the positioning fit structure formed by the positioning protrusion on the sensor mounting base 12 and the matching recess in the internal threaded sealing base 7 or the field base 16 ensures that the instrument body 5 can quickly and accurately reproduce the unique insertion depth and angle with each installation, guaranteeing the optimal position of the target in the flow field. This design ensures measurement accuracy and effectively prevents the sensor from rotating circumferentially due to fluid impact or vibration, avoiding signal line damage and reading fluctuations, thus significantly improving the long-term stability and reliability of the measurement. Furthermore, this positioning design simplifies installation and maintenance processes, avoids human error, and enhances ease of use. By setting multiple O-rings 11 on the outer wall of the sealed conduit 10, a tight dynamic sealing interface is formed with the inner wall of the internally threaded sealing base 7 or the field base 16, constructing multiple redundant sealing barriers. This greatly improves sealing reliability and safety, effectively resisting media pressure and preventing leakage. Simultaneously, the elastic properties of the O-rings 11 allow for slight radial compensation in the sealed conduit 10, effectively absorbing installation deviations or pipeline stress and preventing jamming. Furthermore, the low-friction characteristics of the O-ring 11 make the insertion and removal of the instrument body 5 easier and smoother, meeting the design requirements for quick installation and maintenance. Replacement is also simple and inexpensive, reducing the difficulty and cost of later maintenance. The nut and connecting tube 15 form a modular interface that can be quickly separated, allowing calibration, repair, or replacement of the integrator without disturbing the sensor and sealing structure below, greatly simplifying maintenance operations. The elastic retaining ring 14 on the outer wall of the connecting tube 15 provides mechanical restraint for the internally threaded mounting nut 4 or the externally threaded mounting nut 13, effectively preventing movement and impact during transportation or use, significantly improving the stability and reliability of the product. The fully sealed design of the remote transmission cable 17 not only solves the problem of reading the instrument status in situations with limited installation space, but also...This technology enables long-distance data transmission between the sensor and the totalizer, and its excellent sealing properties allow it to withstand harsh conditions such as underwater metering, thus significantly improving the product's environmental adaptability and lifespan.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick-insertion target flow meter, characterized in that: Includes clamp (2), internal thread base (3), and internal thread mounting nut (4); The clamp (2) is clamped to the outer wall of the process pipe (1), and the two ends of the clamp (2) are pressed by bolts to the opening of the process pipe (1); A pipe sealing gasket (6) is provided between the internal thread base (3) and the process pipe (1); The inner wall of the internal thread base (3) is threadedly connected to an internal thread sealing base (7), the top of the inner wall of the internal thread sealing base (7) is threadedly connected to an internal thread mounting nut (4), the inner wall of the internal thread mounting nut (4) is sleeved with an instrument body (5), the bottom of the outer wall of the instrument body (5) is fixedly connected to a sensor mounting base (12), and the sensor mounting base (12) is located between the internal thread sealing base (7) and the internal thread mounting nut (4); The outer wall of the internal threaded sealing base (7) is threaded with an internal threaded tightening nut (8).

2. The quick-insertion target flow meter according to claim 1, characterized in that: It also includes a field base (16) welded and fixed to the opening of the process pipeline (1) to replace the internal thread base (3) and the internal thread sealing base (7). The top of the outer wall of the field base (16) is threaded with an external thread mounting nut (13), and a sensor mounting base (12) is provided between the field base (16) and the external thread mounting nut (13).

3. A quick-insertion target flow meter according to claim 1 or 2, characterized in that: The sensor mounting base (12) is provided with a positioning protrusion, and the internal thread sealing base (7) or the field base (16) is provided with a recessed part that matches the positioning protrusion to achieve positioning fit.

4. A quick-insertion target flow meter according to claim 1 or 2, characterized in that: The instrument body (5) includes a sealing conduit (10) threaded to the bottom of the sensor mounting base (12). The outer wall of the sealing conduit (10) is fitted with several O-rings (11), and the outer wall of the O-rings (11) is movably connected to the inner wall of the internal threaded sealing base (7) or the field base (16).

5. A quick-insertion target flow meter according to claim 1 or 2, characterized in that: The top of the outer wall of the sensor mounting base (12) is threaded with a connecting pipe (15), and the top of the connecting pipe (15) is connected to the instrument totalizing part (9) by a nut.

6. A quick-insertion target flow meter according to claim 5, characterized in that: An elastic retaining ring (14) is provided on the outer wall of the connecting pipe (15).

7. A quick-insertion target flow meter according to claim 5, characterized in that: It also includes a remote transmission cable (17), the two ends of which are electrically connected to the instrument totalizing part (9) and the connecting pipe (15), respectively.

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