A new type of integrated small-bore orifice flowmeter

Abstract

The utility model discloses a novel integral type small -bore orifice plate flowmeter, including orifice plate flowmeter body, mirror image sets up two groups of guide pressure pipe on orifice plate flowmeter body, two groups of guide pressure pipe all are with differential pressure transmitter plug -in sealing connection, and the outer wall of orifice plate flowmeter body is equipped with connecting seat, and is equipped with the locking assembly for locking differential pressure transmitter on connecting seat, the utility model discloses plug -in sealing connection, has replaced traditional welding and screw connection, has improved the convenience of differential pressure transmitter dismounting greatly, need not cutting welding point or use wrench and so on tool in narrow space operation, avoid the damage that high temperature cutting possibly causes orifice plate or guide pressure pipe in the dismounting process, has reduced the risk of whole flowmeter scrapping, and the locking assembly on connecting seat can effectively guarantee the stability of differential pressure transmitter connection under various working conditions, ensure the accuracy and reliability of measurement data, meet the application scene demand of small -bore orifice plate flowmeter.

Description

Technical Field

[0001] This utility model relates to the field of orifice plate flow meter technology, specifically a novel integrated small-diameter orifice plate flow meter. Background Technology

[0002] In the field of industrial flow measurement, small-diameter orifice plate flow meters are widely used in micro-flow measurement scenarios in industries such as chemical, pharmaceutical, and food due to their compact structure and moderate cost. In the traditional design of small-diameter orifice plate flow meters, the connection between the pressure guide tube and the differential pressure transmitter is mainly by welding and threaded connection. Although these two methods can meet the basic sealing requirements, they have significant limitations in terms of ease of disassembly and assembly.

[0003] Welded connections use high-temperature fusion to fix the pressure-conducting tube and the transmitter interface, forming a rigid sealing structure. This is suitable for harsh conditions such as high pressure and strong vibration. However, its drawback is that it is not removable. When the transmitter needs to be calibrated, replaced, or maintained, the welded joint must be cut. This is not only time-consuming, but may also damage the orifice plate or pressure-conducting tube due to high temperature, increasing the risk of the entire flowmeter becoming unusable. Threaded connections are widely used in low-pressure scenarios, but they require tools such as wrenches for rotation, which is difficult to perform in narrow spaces and often results in interference between tools and surrounding equipment. This makes disassembly and assembly time-consuming and prone to damaging adjacent components. Therefore, a new type of integrated small-diameter orifice plate flowmeter needs to be designed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a novel integrated small-diameter orifice plate flow meter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel integrated small-diameter orifice plate flow meter, comprising an orifice plate flow meter body, wherein two sets of pressure guiding pipes are mirror-arranged on the orifice plate flow meter body, and both sets of pressure guiding pipes are plugged and sealed to a differential pressure transmitter; a connecting seat is provided on the outer wall of the orifice plate flow meter body, and a locking component for locking the differential pressure transmitter is provided on the connecting seat.

[0006] Preferably, the locking assembly includes a limiting block, a T-shaped cylindrical member, and a spring. Two sets of the limiting blocks are symmetrically installed on the top of the connecting seat. Each set of the limiting blocks is slidably connected to a set of the T-shaped cylindrical members. A set of the springs is sleeved on the outside of the T-shaped cylindrical member. One end of the spring abuts against the limiting end face of the limiting block, and the other end abuts against the stepped surface of the T-shaped cylindrical member. The other end of the T-shaped cylindrical member can be inserted into the second limiting seat installed at the bottom of the differential pressure transmitter.

[0007] Preferably, each set of limiting blocks has a limiting rod integrally formed at its top, and the limiting rod can be inserted into the first limiting seat installed at the bottom of the differential pressure transmitter.

[0008] Preferably, one end of the pressure guide tube can be inserted into the pressure tap of the differential pressure transmitter, and a sealing ring is provided between the two.

[0009] Preferably, the pressure guide tube is an irregularly shaped bent tube structure, which provides installation space for the locking component.

[0010] Preferably, the orifice plate flow meter body has flanges integrally formed at both ends.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model adopts a plug-in sealed connection, replacing the traditional welding and threaded connection, which greatly improves the convenience of disassembling and assembling the differential pressure transmitter. There is no need to cut the welding point or use tools such as wrenches to operate in narrow spaces, avoiding the damage to the orifice plate or pressure guide tube that may be caused by high temperature cutting during disassembly and assembly, reducing the risk of the entire flow meter being scrapped. The locking component on the connector can effectively ensure the stability of the differential pressure transmitter connection under various operating conditions, ensuring the accuracy and reliability of the measurement data. The structure is compact and meets the application requirements of small diameter orifice plate flow meters, while maintaining a moderate cost advantage.

[0012] 2. This utility model achieves automatic locking by utilizing the elastic force of a spring, eliminating the need for additional tools, simplifying the locking process, and improving operational convenience. The cooperation between the limit rod and the first limit seat accurately positions the differential pressure transmitter, ensuring that the T-shaped cylindrical part is accurately inserted into the second limit seat, thus improving the accuracy and reliability of the locking component. The overall structure is compact, and all components work together to stably lock the differential pressure transmitter, ensuring that the connection between the differential pressure transmitter and the pressure guide pipe will not loosen during equipment operation, guaranteeing stable measurement work. The locking and unlocking process is simple and efficient, facilitating the quick disassembly and assembly of the differential pressure transmitter, further improving the efficiency of equipment maintenance, calibration, and replacement.

[0013] 3. The plug-in connection between the pressure guide tube and the differential pressure transmitter of this utility model, combined with the sealing ring, enables quick assembly and disassembly while ensuring excellent sealing performance. This avoids the drawbacks of traditional welding and threaded connections in terms of sealing and disassembly. The sealing ring enhances the sealing reliability of the connection between the pressure guide tube and the differential pressure transmitter, reduces the risk of fluid leakage, and ensures the accuracy of measurement data and the safety of the working environment. The irregularly shaped bent pressure guide tube makes reasonable use of space and reserves an installation position for the locking component, making the overall structure more compact. All components can work together, improving the integration of the equipment. The one-piece molded flange makes the connection between the orifice plate flowmeter body and the pipeline system more convenient and secure, ensuring the stability of the flowmeter during operation and reducing measurement errors or equipment failures caused by loose connections. Attached Figure Description

[0014] Figure 1 This is a half-sectional view of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A; Figure 3 This utility model Figure 1 Enlarged view of point B; Figure 4 This is a cross-sectional view of the overall structure of this utility model; Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Orifice plate flowmeter body; 2. Pressure guide pipe; 3. Differential pressure transmitter; 4. Connecting seat; 5. Limiting block; 6. T-shaped cylindrical part; 7. Spring; 8. Limiting rod; 9. First limiting seat; 10. Sealing ring; 11. Flange; 12. Second limiting seat. Detailed Implementation

[0016] 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.

[0017] Example 1 Please refer to Figures 1-5 As shown, this utility model provides a novel integrated small-diameter orifice plate flow meter, including an orifice plate flow meter body 1. Two sets of pressure guiding pipes 2 are mirror-arranged on the orifice plate flow meter body 1. Both sets of pressure guiding pipes 2 are plugged and sealed to a differential pressure transmitter 3. A connecting seat 4 is provided on the outer wall of the orifice plate flow meter body 1. A locking component for locking the differential pressure transmitter 3 is provided on the connecting seat 4.

[0018] When fluid flows through the orifice plate flowmeter body 1, the internal orifice plate will throttle the fluid, creating a pressure difference before and after the orifice plate. Two sets of mirror-arranged pressure-conducting pipes 2 transmit the pressure before and after the orifice plate to the differential pressure transmitter 3. The differential pressure transmitter 3 is connected to the pressure-conducting pipes 2 through a plug-in sealed connection, which can accurately detect this pressure difference and convert it into an electrical signal output corresponding to the flow rate. The differential pressure transmitter 3 has a corresponding display device for display. The locking component on the connector 4 can firmly lock the differential pressure transmitter 3, ensuring that the connection between the differential pressure transmitter 3 and the pressure-conducting pipes 2 is stable and reliable under fluid flow and other operating conditions, ensuring the normal operation of the measurement work.

[0019] The plug-in sealed connection replaces the traditional welding and threaded connection, greatly improving the ease of disassembly and assembly of the differential pressure transmitter 3. It eliminates the need to cut welding points or use tools such as wrenches in confined spaces, avoiding potential damage to the orifice plate or pressure guide tube 2 caused by high-temperature cutting during disassembly and assembly, and reducing the risk of the entire flowmeter becoming unusable. The locking component on the connector 4 effectively ensures the stability of the differential pressure transmitter 3 connection under various operating conditions, ensuring the accuracy and reliability of measurement data. The compact structural design meets the application requirements of small-diameter orifice plate flowmeters while maintaining a moderate cost advantage.

[0020] Specifically, the locking assembly includes a limiting block 5, a T-shaped cylindrical part 6, and a spring 7. Two sets of limiting blocks 5 are symmetrically installed on the top of the connecting seat 4. Each set of limiting blocks 5 is slidably connected to a set of T-shaped cylindrical parts 6. A set of springs 7 is sleeved on the outside of the T-shaped cylindrical parts 6. One end of the springs 7 abuts against the limiting end face of the limiting block 5, and the other end abuts against the stepped surface of the T-shaped cylindrical parts 6. The other end of the T-shaped cylindrical parts 6 can be inserted into the second limiting seat 12 installed at the bottom of the differential pressure transmitter 3. A limiting rod 8 is integrally formed at the top of each set of limiting blocks 5. The limiting rod 8 can be inserted into the first limiting seat 9 installed at the bottom of the differential pressure transmitter 3.

[0021] Under the elastic force of the spring 7, the T-shaped cylindrical part 6 of the locking assembly slides along the limiting block 5. One end of the cylindrical part 6 penetrates the limiting block 5 and inserts into the second limiting seat 12 at the bottom of the differential pressure transmitter 3, thereby completing the locking of the differential pressure transmitter 3. When the pressure guide tube 2 is plugged into the differential pressure transmitter 3, the limiting rod 8 integrally formed at the top of the limiting block 5 will insert into the first limiting seat 9 at the bottom of the differential pressure transmitter 3, which plays a limiting role and ensures that the T-shaped cylindrical part 6 can be accurately inserted into the second limiting seat 12, thus ensuring the accuracy of the locking assembly.

[0022] Automatic locking is achieved using the elastic force of spring 7, eliminating the need for additional tools, simplifying the locking process, and improving operational convenience. The cooperation between the limit rod 8 and the first limit seat 9 accurately positions the differential pressure transmitter 3, ensuring that the T-shaped cylindrical part 6 is accurately inserted into the second limit seat 12, thus improving the accuracy and reliability of the locking assembly. The overall structure is compact, and all components work together to stably lock the differential pressure transmitter 3, ensuring that the connection between the differential pressure transmitter 3 and the pressure guide pipe 2 will not loosen during equipment operation, guaranteeing stable measurement. The locking and unlocking process is simple and efficient, facilitating the quick disassembly and assembly of the differential pressure transmitter 3, further improving the efficiency of equipment maintenance, calibration, and replacement.

[0023] Among them: one end of the pressure guiding pipe 2 can be inserted into the pressure tap of the differential pressure transmitter 3, and a sealing ring 10 is provided between the two. The pressure guiding pipe 2 is a special-shaped bent pipe structure, which reserves installation space for the locking component. Both ends of the orifice plate flowmeter body 1 are integrally formed with flanges 11.

[0024] One end of the pressure guide pipe 2 is inserted into the pressure tap of the differential pressure transmitter 3. The sealing ring 10 between the two will produce a sealing effect due to contact compression, preventing fluid leakage from the connection during transmission and ensuring the accuracy of pressure transmission. The pressure guide pipe 2 adopts an irregularly shaped bent pipe structure. Through a specific bending shape, sufficient installation space is reserved for the locking components, including the limit block 5 and the T-shaped cylindrical part 6, so that the locking components can be installed smoothly and play a locking function. The flanges 11 at both ends of the orifice plate flowmeter body 1 can be connected to the flanges of the pipeline system. The orifice plate flowmeter body 1 is fixed in the pipeline by bolts and other fasteners to ensure that the fluid can flow stably through the orifice plate flowmeter body 1 and provide a stable fluid environment for flow measurement.

[0025] The plug-in connection between the pressure guide tube 2 and the differential pressure transmitter 3, along with the sealing ring 10, enables quick assembly and disassembly while ensuring excellent sealing performance. This avoids the drawbacks of traditional welding and threaded connections in terms of sealing and disassembly. The sealing ring 10 enhances the sealing reliability of the connection between the pressure guide tube 2 and the differential pressure transmitter 3, reduces the risk of fluid leakage, and ensures the accuracy of measurement data and the safety of the working environment. The irregularly shaped bent pressure guide tube 2 makes reasonable use of space and reserves an installation position for the locking component, making the overall structure more compact. All components can work together, improving the integration of the equipment. The one-piece flange 11 makes the connection between the orifice plate flowmeter body 1 and the pipeline system more convenient and secure, ensuring the stability of the flowmeter during operation and reducing measurement errors or equipment failures caused by loose connections.

[0026] Working principle: When fluid flows through the orifice plate flowmeter body 1, the internal orifice plate throttles the fluid, creating a pressure difference before and after the orifice plate. Two sets of mirror-arranged pressure-conducting pipes 2 transmit the pressure before and after the orifice plate to the differential pressure transmitter 3. The differential pressure transmitter 3 is connected to the pressure-conducting pipes 2 via a plug-in sealed connection, accurately detecting this pressure difference and converting it into an electrical signal output corresponding to the flow rate. The differential pressure transmitter 3 has a corresponding display device for display. Under the elastic force of the spring 7, the T-shaped cylindrical part 6 of the locking component slides along the limit block 5, with one end penetrating the limit block 5 and inserted into the limit block 5. The second limiting seat 12 at the bottom of the differential pressure transmitter 3 is inserted to lock the differential pressure transmitter 3. When the pressure guide tube 2 is plugged into the differential pressure transmitter 3, the limiting rod 8 integrally formed at the top of the limiting block 5 will be inserted into the first limiting seat 9 at the bottom of the differential pressure transmitter 3 to limit the movement and ensure that the T-shaped cylindrical part 6 can be accurately inserted into the second limiting seat 12, thus ensuring the accuracy of the locking component. One end of the pressure guide tube 2 is inserted into the pressure tap of the differential pressure transmitter 3, and the sealing ring 10 between the two will produce a sealing effect due to contact compression, preventing fluid leakage from the connection during transmission and ensuring the accuracy of pressure transmission.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel integrated small-diameter orifice plate flow meter, comprising an orifice plate flow meter body (1), characterized in that: Two sets of pressure guide pipes (2) are mirrored on the orifice plate flow meter body (1). Both sets of pressure guide pipes (2) are plugged into and sealed to the differential pressure transmitter (3). The outer wall of the orifice plate flow meter body (1) is provided with a connecting seat (4). The connecting seat (4) is provided with a locking component for locking the differential pressure transmitter (3).

2. The novel integrated small-diameter orifice plate flow meter according to claim 1, characterized in that: The locking assembly includes a limiting block (5), a T-shaped cylindrical member (6), and a spring (7). Two sets of the limiting blocks (5) are symmetrically installed on the top of the connecting seat (4). Each set of the limiting blocks (5) is slidably connected to a set of the T-shaped cylindrical members (6). A set of the springs (7) is sleeved on the outside of the T-shaped cylindrical member (6). One end of the spring abuts against the limiting end face of the limiting block (5), and the other end abuts against the stepped surface of the T-shaped cylindrical member (6). The other end of the T-shaped cylindrical member (6) can be inserted into the second limiting seat (12) installed at the bottom of the differential pressure transmitter (3).

3. The novel integrated small-diameter orifice plate flow meter according to claim 2, characterized in that: Each set of limiting blocks (5) has an integrally formed limiting rod (8) at the top, and the limiting rod (8) can be inserted into the first limiting seat (9) installed at the bottom of the differential pressure transmitter (3).

4. The novel integrated small-diameter orifice plate flow meter according to claim 1, characterized in that: One end of the pressure guide tube (2) can be inserted into the pressure tap of the differential pressure transmitter (3), and a sealing ring (10) is provided between the two.

5. The novel integrated small-diameter orifice plate flow meter according to claim 1, characterized in that: The pressure guide tube (2) has an irregularly shaped bent tube structure, which provides installation space for the locking component.

6. The novel integrated small-diameter orifice plate flow meter according to claim 1, characterized in that: The orifice plate flowmeter body (1) has flanges (11) integrally formed at both ends.

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