Worm gear flowmeter convenient to assemble

Abstract

The utility model discloses a worm gear flowmeter convenient to assemble, which comprises a detection tube and joint tubes detachably mounted at two ends of the detection tube, a transmission mechanism is arranged in the detection tube, a magneto-electric converter is further arranged on the detection tube, connectors are arranged at two ends of the detection tube, external threads are arranged on the connectors, and the transmission mechanism is connected with the magneto-electric converter. The end part of the joint pipe is provided with an internal thread, the detection pipe is in threaded connection with the joint pipe, the connector is sleeved with a sealing ring, and the detection pipe is matched with the port of the joint pipe to clamp the sealing ring. According to the utility model, the sealing ring is arranged between the detection pipe and the joint pipe, and the mounting ring groove and the tooth-shaped groove are formed in the port of the detection pipe, so that when the two pipes are in butt joint, the sealing ring is extruded, and the mounting ring groove and the tooth-shaped groove are filled with the extruded and deformed sealing ring, thereby ensuring the sealing performance between the detection pipe and the joint pipe; and the sealing effect of the flowmeter is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine flowmeters, in particular to a worm gear flowmeter which is easy to assemble. Background Art

[0002] The turbine flowmeter is a velocity flow meter with temperature and pressure compensation functions. It is a type of velocity flowmeter. Its working principle is: the power of the flowing fluid drives the turbine blades to rotate, and its rotation speed is approximately proportional to the volume flow rate. The volume indication of the fluid passing through the flowmeter is based on the number of revolutions of the turbine impeller. The turbine flowmeter is widely used in the fields of petroleum, chemical industry, electric power, gas pipeline network, city gas, etc. due to its high measurement accuracy, good repeatability and stability, wide measuring range, rapid response to flow changes, strong anti-interference ability, and easy signal transmission. It is also widely used in trade settlement. The common worm wheel flowmeters on the market are all one-piece structures. This type of turbine flowmeter is fixed in size, which is very inconvenient to install in some narrow spaces, and the flow The meter size is fixed and cannot be adjusted according to the actual installation conditions. Once there is a slight deviation in the installation size, the entire flow meter may need to be replaced, and the integrated turbine flowmeter takes up more space for transportation. In order to solve these problems, a worm gear flowmeter is disclosed in the utility model patent with application number: "CN202221932547.1" and titled: "A gas turbine flowmeter that is easy to disassemble". The specification thereof records a split flowmeter in which the various pipe sections of the flowmeter are assembled together for use. Therefore, this split flowmeter has added more connection ports. Therefore, absolute sealing needs to be ensured between the various pipe sections. Therefore, how to improve the sealing between the various pipe sections is the top priority to ensure that the flowmeter can operate safely and normally. Utility Model Content

[0003] The purpose of the present invention is to avoid the deficiencies of the prior art and provide a worm gear flowmeter that is easy to assemble, thereby effectively solving the deficiencies in the prior art.

[0004] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a worm flowmeter with convenient assembly, comprising a detection tube and detachable joint tubes mounted at both ends of the detection tube, a transmission mechanism being arranged in the detection tube, and a magnetoelectric converter being also arranged on the detection tube;

[0005] Both ends of the detection tube are provided with connectors, which are arranged along the circumference of the detection tube and have an outer diameter smaller than the diameter of the detection tube. The connectors are provided with external threads, and the ends of the joint pipes are provided with internal threads. The detection tube and the joint pipe are threadedly connected, and a sealing ring is sleeved on the connectors. The ports of the detection tube and the joint pipe cooperate to clamp the sealing ring.

[0006] A mounting ring groove is provided on the port of the detection tube at a position corresponding to the outer periphery of the connector. One end of the sealing ring is clamped in the mounting ring groove, and the other end of the sealing ring extends to the outside of the mounting ring groove. The inner wall of the sealing ring is tightly attached to the outer wall of the connector. A plurality of tooth-shaped grooves are also provided on the port of the detection tube at a position corresponding to the outer side of the mounting ring groove. The tooth-shaped grooves are evenly distributed on the outer side of the mounting ring groove along the circumferential direction, and the tooth-shaped grooves and the mounting ring groove are connected to each other.

[0007] Furthermore, an inclined notch groove is provided on the port at one end where the joint pipe is connected to the connector, and the notch groove is located at the channel of the joint pipe, and the end of the sealing ring extending out of the mounting ring groove is tightly pressed and filled in the notch groove.

[0008] Furthermore, the portion of the sealing ring extending out of the mounting ring groove is a bevel structure with a gradually decreasing diameter.

[0009] Furthermore, a mounting flange is provided on the joint pipe away from the end with the external thread.

[0010] Furthermore, the transmission mechanism includes a wheel shaft arranged in the detection tube, a worm wheel blade is arranged in the middle of the wheel shaft, and guide plates are arranged at both ends of the wheel shaft.

[0011] Furthermore, a mounting joint is provided on the detection tube, and the magnetoelectric converter is installed at the mounting joint. The magnetoelectric converter includes a sensor located in the mounting head and a counter placed outside the mounting joint.

[0012] The above technical solution of the present invention has the following beneficial effects: the present invention arranges a sealing ring between the detection tube and the joint tube, and arranges an installation ring groove and a toothed groove on the port of the detection tube. When the two tubes are docked, the sealing ring will be squeezed, and the squeezed and deformed sealing ring will fill the installation ring groove and the toothed groove, thereby ensuring the sealing between the detection tube and the joint tube, and greatly improving the sealing effect of the flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0016] Figure 4 This is a schematic diagram of the planar structure at the port of the detection tube according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, unless there is a conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0019] like Figure 1-4 As shown, the embodiment of the present invention is a worm flowmeter with convenient assembly, comprising a detection tube 1 and detachable joint tubes 2 mounted at both ends of the detection tube 1. A transmission mechanism 6 is provided in the detection tube 1, and a magnetoelectric converter 3 is also provided on the detection tube 1.

[0020] Connectors 4 are provided at both ends of the detection tube 1. The connectors 4 are arranged along the circumference of the detection tube 1 and the outer diameter of the connectors 4 is smaller than the diameter of the detection tube 1. The connectors 4 are provided with external threads, and the ends of the joint tube 2 are provided with internal threads. The connectors 4 on the detection tube 1 are threadedly connected to the joint tube 2. A sealing ring 5 is sleeved on the connector 4. The ports of the detection tube 1 and the joint tube 2 cooperate to clamp the sealing ring 5.

[0021] A mounting ring groove 11 is provided on the port of the detection tube 1 at a position corresponding to the outer periphery of the connector 4. One end of the sealing ring 5 is clamped in the mounting ring groove 11, and the other end of the sealing ring 5 extends to the outside of the mounting ring groove 11. The inner wall of the sealing ring 5 is tightly attached to the outer wall of the connector 4. The port of the detection tube 1 is also provided with a plurality of serrated grooves 12 at a position corresponding to the outer side of the mounting ring groove 11. The serrated grooves 12 are evenly distributed on the outer side of the mounting ring groove 11 along the circumferential direction, and the serrated grooves 12 and the mounting ring groove 11 are connected to each other.

[0022] An inclined notch groove 21 is provided on the port where the joint pipe 2 is connected to the connector 4. The notch groove 21 is located at the channel of the joint pipe 2. The end of the sealing ring 5 extending outside the mounting ring groove 11 is tightly filled in the notch groove 21.

[0023] The portion of the sealing ring 5 extending out of the mounting ring groove 21 is a groove structure with a gradually decreasing diameter.

[0024] A mounting flange 7 is provided on the end of the joint pipe 2 away from the end with the external thread.

[0025] The transmission mechanism 6 includes a wheel shaft 61 disposed in the detection tube 1 , a worm wheel blade 62 is disposed in the middle of the wheel shaft 61 , and guide plates 63 are disposed at both ends of the wheel shaft 61 .

[0026] A mounting joint 13 is provided on the detection tube 1, and the magnetoelectric converter 3 is installed at the mounting joint 13. The magnetoelectric converter 3 includes a sensor 31 located inside the mounting head 13 and a counter 32 located outside the mounting joint 13. The sensor 31 transmits the rotation data of the transmission mechanism 6 to the counter 32 for display.

[0027] When the sealing ring 5 is in the state of being pressed down, the end portion of the sealing ring 5 is pressed down and the end portion of the sealing ring 5 is pressed down, so that the sealing ring 5 is pressed down and the end portion of the sealing ring 5 is pressed down.

[0028] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A worm gear flowmeter that is easy to assemble, characterized by: It includes a detection tube and detachable joint tubes installed at both ends of the detection tube, a transmission mechanism is provided in the detection tube, and a magnetoelectric converter is also provided on the detection tube; Both ends of the detection tube are provided with connectors, which are arranged along the circumference of the detection tube and have an outer diameter smaller than the diameter of the detection tube. The connectors are provided with external threads, and the ends of the joint pipes are provided with internal threads. The detection tube and the joint pipe are threadedly connected, and a sealing ring is sleeved on the connectors. The ports of the detection tube and the joint pipe cooperate to clamp the sealing ring. A mounting ring groove is provided on the port of the detection tube at a position corresponding to the outer periphery of the connector. One end of the sealing ring is clamped in the mounting ring groove, and the other end of the sealing ring extends to the outside of the mounting ring groove. The inner wall of the sealing ring is tightly attached to the outer wall of the connector. A plurality of tooth-shaped grooves are also provided on the port of the detection tube at a position corresponding to the outer side of the mounting ring groove. The tooth-shaped grooves are evenly distributed on the outer side of the mounting ring groove along the circumferential direction, and the tooth-shaped grooves and the mounting ring groove are connected to each other.

2. The worm gear flowmeter with easy assembly according to claim 1, characterized in that: An inclined notch groove is provided on the port at one end where the joint pipe is connected to the connector. The notch groove is located at the channel of the joint pipe, and the end of the sealing ring extending out of the mounting ring groove is tightly pressed and filled in the notch groove.

3. The worm flowmeter with easy assembly according to claim 2, characterized in that: The portion of the sealing ring extending out of the mounting ring groove is a bevel structure with a gradually decreasing diameter.

4. The worm gear flowmeter with easy assembly according to claim 1, characterized in that: The joint pipe is provided with a mounting flange at one end away from the end having the external thread.

5. The worm gear flowmeter with easy assembly according to claim 1, characterized in that: The transmission mechanism includes a wheel shaft arranged in the detection tube, a worm wheel blade is arranged in the middle of the wheel shaft, and guide plates are arranged at both ends of the wheel shaft.

6. The worm gear flowmeter with easy assembly according to claim 1, characterized in that: The detection tube is provided with a mounting joint, the magnetoelectric converter is mounted on the mounting joint, and the magnetoelectric converter includes a sensor located inside the mounting joint and a counter placed outside the mounting joint.

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