Gas ultrasonic flow sensor mounting base structure capable of automatically draining water

Abstract

The utility model relates to a gas ultrasonic flow sensor mounting base structure capable of automatically draining water, and belongs to the technical field of gas flow sensor mounting. According to the technical scheme, the distance between the lowest point A of the top of an inverted-frustum-shaped cavity and the pipe wall of the pipeline is the shortest, the distance between the highest point of the top of the inverted-frustum-shaped cavity and the pipe wall of the pipeline is the longest, and the space between the top of the inverted-frustum-shaped cavity and the pipe wall of the pipeline forms an irregular cylindrical cavity; the included angle beta between the inner cavity wall of the inverted-frustum-shaped cavity where the lowest point A is located and the inner wall surface of the pipeline is an obtuse angle. The included angle between the bottommost inner cavity wall of the inverted-circular-truncated-cone-shaped cavity and the surface of the inner wall of the pipeline is changed into the obtuse angle, so that the joint of the bottommost inner cavity wall of the inverted-circular-truncated-cone-shaped cavity and the pipe wall loses a space for storing dew, the dew can be automatically drained into the pipeline, ultrasonic signals emitted and received by the probe body cannot be influenced, and the ultrasonic probe is simple in structure and convenient to use. The method plays a great role in improving and stabilizing the signal intensity and quality of the ultrasonic sensor.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas ultrasonic flow sensor installation base structure of self-draining belongs to gas flow sensor installation technical field. BACKGROUND

[0002] At present, the gas ultrasonic flow sensor is mainly installed in the plug-in mode, after the installation of the gas ultrasonic flow sensor, the axis of the gas ultrasonic flow sensor and the axis of the on-site pipeline have a certain oblique angle α, that is, the installation angle of the ultrasonic flow sensor, and α is usually 55°~75°. The upper part of the base of the prior art is a regular circular ring body, the bottom is an irregular circular ring body, the inner cavity of the bottom is cylindrical, and the end face of the bottom is a slanted ring surface with an arc, the arc of the slanted ring surface matches the outer diameter of the on-site pipeline, and the whole base is obliquely welded and installed on the on-site pipeline. When the gas ultrasonic flow sensor base is installed on the vertical or obliquely upward pipeline, the inner cavity wall bottom of the shorter side of the base and the inner wall surface of the pipeline form an acute angle, since the gas transported in the pipeline contains a certain amount of moisture and is prone to condensation, the combination of the inner cavity wall bottom of the shorter side of the base and the pipe wall will accumulate some condensation water and cannot be automatically discharged, which will affect the emission and reception of ultrasonic wave signals by the probe body, cause the signal quality and signal strength of the gas ultrasonic flow sensor to gradually deteriorate, and even cause the instrument to fail to measure normally. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a gas ultrasonic flow sensor installation base structure of self-draining, the appearance of the base is the same as that of the traditional base, but a part of the inner cavity of the bottom of the base is changed from cylindrical to inverted conical, when the gas ultrasonic flow sensor base is installed on the vertical or obliquely upward pipeline, the inner cavity wall of the bottom of the inverted conical cavity and the inner wall surface of the pipeline form an obtuse angle, so that the combination of the inner cavity wall of the bottom of the inverted conical cavity and the pipe wall loses the space for storing condensation water, and the emission and reception of ultrasonic wave signals by the probe body are not affected by the storage of condensation water, which has a great effect on stabilizing the signal quality and signal strength of the sensor and solves the problems in the background technology.

[0004] The technical scheme of the utility model is:

[0005] The application discloses a gas ultrasonic flow sensor installation base structure capable of self-draining water.

[0006] Further, the base body is connected by a regular circular ring body and an irregular circular ring body, the regular circular ring body is arranged away from the pipeline and is provided with external threads on the outer wall, and the bottom surface of the irregular circular ring body is a slant ring surface with an arc, the arc of the bottom surface is matched with the outer diameter of the pipeline, and the bottom surface is attached and welded at the opening of the pipeline.

[0007] Further, the inner diameter of the cylindrical cavity is larger than the outer diameter of the gas ultrasonic flow sensor probe body to be installed, and the inner diameter of the cylindrical cavity is the same as the diameter of the bottom of the inverted frustum-shaped cavity.

[0008] Further, the angle alpha between the axis of the base body and the center line of the pipeline is an acute angle.

[0009] Further, the distance between the lowest point A of the top of the inverted frustum-shaped cavity and the outer pipeline wall of the pipeline is 0, and the bottom surface where the lowest point A is located is welded with the outer pipeline wall of the pipeline.

[0010] Further, the distance between the highest point of the top of the inverted frustum-shaped cavity and the outer pipeline wall of the pipeline is the maximum height of the irregular cylindrical cavity.

[0011] The positive effect of the application is that when the gas ultrasonic flow sensor base is installed on a vertical or inclined upward pipeline, the angle between the inner cavity wall of the bottom of the inverted frustum-shaped cavity of the base body and the inner wall surface of the pipeline is obtuse, so that the combined part of the inner cavity wall of the bottom of the inverted frustum-shaped cavity and the pipeline wall loses the space for storing condensed water, the condensed water can be drained into the pipeline, the ultrasonic wave signal emitted and received by the probe body is not affected, and the signal strength and quality of the ultrasonic sensor are improved and stabilized. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a half-sectioned schematic view of the base after installation of the application;

[0013] Figure 2 It is a sectional structure schematic view of the base of the application;

[0014] In the diagram: 1. Pipe; 2. Regular ring; 3. Irregular ring; 4. Bottom; 5. Cylindrical cavity; 6. Inverted frustum-shaped cavity; 6. Bottom; 61. Lowest point B611; 62. Top; 62. Lowest point A621; 62. Highest point 622; 7. Irregular cylindrical cavity. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] See attached document Figure 1 A self-draining gas ultrasonic flow sensor mounting base structure includes a base body, which is inclinedly welded to the opening of a pipe. The base body is a hollow annular structure. The inner cavity of the base body consists of a cylindrical cavity 5, an inverted frustum-shaped cavity 6, and an irregular cylindrical cavity 7 that are connected to each other in sequence. The cylindrical cavity 5 is arranged away from the pipe 1 and connected to the bottom 61 of the inverted frustum-shaped cavity 6. The lowest point A621 of the top 62 of the inverted frustum-shaped cavity 6 is the shortest distance from the pipe wall of the pipe 1, and the highest point 622 of the top 62 of the inverted frustum-shaped cavity 6 is the longest distance from the pipe wall of the pipe 1. The space between the top 62 of the inverted frustum-shaped cavity 6 and the pipe wall of the pipe 1 forms the irregular cylindrical cavity 7. The taper of the inverted frustum-shaped cavity 6 should satisfy the following: the angle β between the inner wall of the inverted frustum-shaped cavity 6 where the lowest point A621 is located and the inner wall surface of the pipe 1 is an obtuse angle.

[0017] See attached document Figure 2 The base body is composed of a regular circular ring 2 and an irregular circular ring 3 connected together. The regular circular ring 2 is arranged away from the pipe 1 and has external threads on its outer wall. The bottom surface 4 of the irregular circular ring 3 is an arc-shaped inclined ring surface. The arc of the bottom surface 4 matches the outer diameter of the pipe 1. The bottom surface 4 is welded to the opening of the pipe 1.

[0018] In this embodiment, the inner diameter of the cylindrical cavity 5 is larger than the outer diameter of the gas ultrasonic flow sensor probe body to be installed, so as to facilitate the insertion and removal of the gas ultrasonic flow sensor during installation and maintenance. The inner diameter of the cylindrical cavity 5 is the same as the diameter of the bottom 61 of the inverted frustum-shaped cavity 6.

[0019] In this embodiment, the angle α between the axis of the base body and the center line of the pipe 1 is an acute angle.

[0020] In this embodiment, the lowest point A621 of the top 62 of the inverted frustum-shaped cavity 6 is 0 meters away from the outer wall of the pipe 1, and the bottom surface 4 where the lowest point A621 is located is welded to the outer wall of the pipe 1.

[0021] In this embodiment, the distance between the highest point 622 of the top 62 of the inverted frustum-shaped cavity 6 and the outer wall of the pipe 1 is the maximum height of the irregular cylindrical cavity 7.

[0022] When the utility model is used on the vertical or inclined upward pipeline, firstly, the cross center point is drawn on the outer wall of the pipeline 1, then the base body center is aligned with the cross center point drawn on the outer wall of the on-site pipeline 1, the bottom surface 4 of the base body is tightly combined with the outer wall of the pipeline 1, the base body is integrally inclined and seal welded on the on-site pipeline, and the inclined installation angle of the base body is α. Then the hole is punched on the pipe wall through the inner cavity of the base body, after the installation is completed, the lowest point A621 of the top 62 of the inverted cone cavity 6 directly contacts with the pipe wall of the pipeline 1, the included angle β between the inner cavity wall of the inverted cone cavity 6 where the lowest point A621 is located and the inner wall surface of the pipeline 1 becomes obtuse, the lowest point B611 of the bottom 61 of the inverted cone cavity 6 is higher than the lowest point A621 of the top 62 of the inverted cone cavity 6, the inner cavity wall of the inverted cone cavity 6 between the lowest point B611 and the lowest point A621 inclines downward, the inner cavity wall of the adjacent inverted cone cavity 6 inclines downward, the condensed water loses the storage space, can be discharged into the pipeline, and will not be affected by the storage of the condensed water on the emission and reception of the ultrasonic wave signal of the probe body, has great effect on improving and stabilizing the signal strength and quality of the ultrasonic sensor.

Claims

1. A self-draining gas ultrasonic flow sensor mounting base structure comprising a base body which is inclinedly welded at an opening of a pipe, characterized in that: The base body is a hollow annular structure, and the inner cavity of the base body is composed of a cylindrical cavity (5), an inverted frustum cavity (6) and an irregular cylindrical cavity (7) which are sequentially communicated with each other, the cylindrical cavity (5) is arranged away from the pipeline (1) and is connected with the bottom (61) of the inverted frustum cavity (6), the lowest point A (621) of the top (62) of the inverted frustum cavity (6) is the shortest distance from the pipe wall of the pipeline (1), the highest point (622) of the top (62) of the inverted frustum cavity (6) is the longest distance from the pipe wall of the pipeline (1), and the space between the top (62) of the inverted frustum cavity (6) and the pipe wall of the pipeline (1) forms the irregular cylindrical cavity (7), and the included angle β between the inner wall surface of the inverted frustum cavity (6) where the lowest point A (621) is located and the inner wall surface of the pipeline (1) is an obtuse angle.

2. A gas ultrasonic flow sensor mounting base structure capable of self-draining according to claim 1, characterized by: The base body is connected by a regular circular ring body (2) and an irregular circular ring body (3), the regular circular ring body (2) is arranged away from the pipeline (1) and is provided with external threads on the outer wall, and the bottom surface (4) of the irregular circular ring body (3) is an inclined ring surface with an arc, the arc of the bottom surface (4) is matched with the outer diameter of the pipeline (1), and the bottom surface (4) is welded at the opening of the pipeline (1).

3. A gas ultrasonic flow sensor mounting base structure capable of self-draining according to claim 1 or 2, characterized in that: The inner diameter of the cylindrical cavity (5) is greater than the outer diameter of the gas ultrasonic flow sensor probe body to be installed, and the inner diameter of the cylindrical cavity (5) is the same as the diameter of the bottom (61) of the inverted frustum cavity (6).

4. The gas ultrasonic flow sensor mounting base structure according to claim 1 or 2, wherein: The included angle α between the axis of the base body and the axis of the pipeline (1) is an acute angle.

5. The gas ultrasonic flow sensor mounting base structure according to claim 2, wherein: The distance between the lowest point A (621) of the top (62) of the inverted frustum cavity (6) and the outer pipe wall of the pipeline (1) is 0, and the bottom surface (4) where the lowest point A (621) is located is welded with the outer pipe wall of the pipeline (1).

6. A gas ultrasonic flow sensor mounting base structure capable of self-draining according to claim 5, characterized in that: The distance between the highest point (622) of the top (62) of the inverted frustum cavity (6) and the outer pipe wall of the pipeline (1) is the maximum height of the irregular cylindrical cavity (7).

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