Protective cover structure for multichannel plug-in ultrasonic flow sensor

Abstract

The utility model relates to a protective cover structure for a multichannel plug-in ultrasonic flow sensor, and belongs to the technical field of ultrasonic flow sensors. According to the technical scheme, a cable hole (8) is formed in the top of an upper section barrel (9), and a signal cable of a sensor assembly (1) is led out through the cable hole; a door-shaped hole (14) corresponding to an operating handle (15) of the ball valve (3) is formed in the lower part of the lower-section barrel body (11), and the operating handle of the ball valve penetrates out of the door-shaped hole; the inner surface of the lower-section barrel body is tightly attached to the outer surface of the base, a plurality of threaded holes are formed in the bottom of the lower-section barrel body, and fastening screws penetrate through the threaded holes to be fastened to the base; and a lead sealing line (7) penetrates through the through holes in the two sides of the door-shaped hole to block an operation handle of the ball valve in the door-shaped hole. The beneficial effects of the utility model are that after the sensor assembly is installed, the protective cover is installed on the sensor assembly exposed outside the pipeline, and the insertion depth of the sensor assembly is prevented from being changed due to various factors, thereby ensuring stable and accurate metering of an instrument.

Description

TECHNICAL FIELD

[0001] The utility model relates to a protective cover structure for multichannel insert type ultrasonic flow sensor belongs to ultrasonic flow sensor technical field. BACKGROUND

[0002] Multichannel insert type ultrasonic flow sensor (flowmeter) is a kind of instrument equipment for measuring flow. At present, multichannel insert type ultrasonic flow sensor is increasingly used in flow trade settlement due to the characteristics of simple installation, good stability, strong adaptability and high accuracy, and insert type sensor generally adopts on-site installation under pressure or uses pipe section type sensor, after installation and debugging are completed, sensor assembly is exposed outside pipeline, length is about 220mm, because there is no protective measure, insert depth of insert type ultrasonic flow sensor can change due to various factors, even maliciously change insert depth, cause measurement to be inaccurate, unnecessary economic loss is generated. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a protective cover structure for multichannel insert type ultrasonic flow sensor, installs protective cover on the sensor assembly exposed outside pipeline after sensor assembly installation is completed, avoids sensor assembly insertion depth to change due to various factors, thereby guaranteeing instrument stable, accurate measurement, solve the above technical problems existing in prior art.

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

[0005] A protective cover structure for multichannel insert type ultrasonic flow sensor, installs base on the on-site pipeline, installs ball valve on the base, sensor assembly is inserted into on-site pipeline through ball valve and base, protective cover is arranged above on-site pipeline, sensor assembly, ball valve and base are located in protective cover;The protective cover is composed of upper section cylinder, middle section cylinder and lower section cylinder of integral structure, the upper section cylinder and the lower section cylinder are smoothly connected as a whole through the middle section cylinder, the inner diameter of the upper section cylinder, the middle section cylinder and the lower section cylinder increases gradually;The top of the upper section cylinder is provided with cable hole, and the signal cable of the sensor assembly is led out through the cable hole;The lower part of the lower section cylinder is provided with door-shaped hole corresponding to the operating handle of the ball valve, and the operating handle of the ball valve is led out from the door-shaped hole;The inner surface of the lower section cylinder is closely combined with the outer surface of the base, the bottom of the lower section cylinder is provided with a plurality of threaded holes, and the fastening screw is fastened with the base through the threaded holes;Lead seal is arranged on the door-shaped hole, and through holes are respectively arranged on the lower section cylinder on both sides of the door-shaped hole, and the lead seal line passes through the through holes on both sides of the door-shaped hole to lock the operating handle of the ball valve in the door-shaped hole.

[0006] The sensor assembly is a multichannel insert type ultrasonic flow sensor.

[0007] The protective cover is a hard plastic cover, which is made by 3D printing or casting.

[0008] The number of the fastening screws and the threaded holes is two.

[0009] The upper cylinder and the middle cylinder are circular truncated cone in shape and circular truncated cone space in the inside; the lower cylinder is octagonal prism in shape and cylindrical space in the inside, and the door-shaped hole is arranged on one end face of the octagonal prism, and the width and height of the door-shaped hole are suitable for the operation handle of the ball valve to pass out.

[0010] When the multi-channel plug-in ultrasonic flow sensor is installed, the protective cover is installed outside, the bottom is fixed on the base by the fastening screw, and the operation handle of the ball valve is locked by the lead seal, so that the insertion depth of the sensor assembly is prevented from being changed due to various factors, and accurate and reliable measurement is ensured. When the sensor assembly needs to be repaired, the fastening screw at the bottom is loosened, the lead seal is removed, the protective cover is removed, and the sensor assembly is pulled out for repair, and after the repair is completed, the protective cover and the lead seal are reinstalled.

[0011] The beneficial effects of the utility model are as follows: after the sensor assembly is installed, the protective cover is installed on the sensor assembly exposed outside the pipeline, the insertion depth of the sensor assembly is prevented from being changed due to various factors, and stable and accurate measurement of the instrument is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an installation schematic view of an embodiment of the utility model;

[0013] Figure 2 It is a protective cover structure schematic view of an embodiment of the utility model;

[0014] In the figure: sensor assembly 1, protective cover 2, ball valve 3, base 4, fastening screw 5, field pipeline 6, lead seal 7, cable hole 8, upper cylinder 9, middle cylinder 10, lower cylinder 11, threaded hole 12, through hole 13, door-shaped hole 14, operation handle 15. DETAILED DESCRIPTION

[0015] The utility model is further described through embodiments in combination with the drawings.

[0016] The utility model provides a protection cover structure for multichannel plug-in ultrasonic flow sensor, installs base 4 on field pipeline 6, installs ball valve 3 on base 4, sensor assembly 1 is inserted into field pipeline 6 through ball valve 3 and base 4, protection cover 2 is equipped above field pipeline 6, and sensor assembly 1, ball valve 3 and base 4 are located in protection cover 2;The protection cover is formed by the upper section of cylinder 9, the middle section of cylinder 10 and the lower section of cylinder 11 of integrated structure, and the upper section of cylinder 9 and the lower section of cylinder 11 are smoothly connected as a whole through the middle section of cylinder 10, and the inner diameter of the upper section of cylinder 9, the middle section of cylinder 10 and the lower section of cylinder 11 increases gradually;The top of the upper section of cylinder 9 is provided with cable hole 8, and the signal cable of sensor assembly 1 is led out through cable hole 8;The lower part of the lower section of cylinder 11 is provided with door-shaped hole 14 corresponding to the operating handle 15 of ball valve 3, and the operating handle 15 of ball valve 3 is led out from door-shaped hole 14;The inner surface of the lower section of cylinder 11 is closely combined with the outer surface of base 4, the bottom of the lower section of cylinder 11 is provided with a plurality of threaded holes 12, and fastening screw 5 is fastened with base 4 through threaded hole 12;Lead seal 7 is arranged on door-shaped hole 14, and through hole 13 is arranged on the lower section of cylinder 11 on both sides of door-shaped hole 14 respectively, and the operating handle 15 of ball valve 3 in door-shaped hole 14 is locked by lead seal 7 through through hole 13 on both sides of door-shaped hole 14.

[0017] The sensor assembly 1 is a multichannel plug-in ultrasonic flow sensor.

[0018] The protection cover 2 is a hard plastic cover, which is processed by 3D printing or casting.

[0019] The number of fastening screws 5 and threaded holes 12 is two.

[0020] The outer shape of the upper section of cylinder 9 and the middle section of cylinder 10 is circular truncated cone, and the inside is circular truncated cone space;The outer shape of the lower section of cylinder 11 is octagonal prism, and the inside is cylindrical space, and the door-shaped hole 14 is arranged on one end face of the octagonal prism, and the width and height of the door-shaped hole 14 are sufficient to lead out the operating handle of the ball valve 3.

[0021] When the multichannel plug-in ultrasonic flow sensor is installed, the protection cover is installed outside, the bottom is fixed on the base by the set screw, and the operating handle of the ball valve is locked by the lead, so that the insertion depth of the sensor assembly is changed due to various factors, and the measurement accuracy and reliability are ensured. When the sensor assembly needs to be repaired, the set screw at the bottom is loosened, the lead is removed, the protection cover is removed, the sensor assembly is pulled out for repair, and after the repair is completed, the protection cover and the lead are reassembled.

[0022] In the embodiment, the inner surface of the lower section cylinder 11 is tightly fitted with the outer surface of the base 4, the bottom of the lower section cylinder 11 is provided with two threaded holes 12 with a diameter of 4 mm, and the fastening screws 5 are fastened with the base 4 through the threaded holes 12; the lower section cylinder 11 on both sides of the door-shaped hole 14 is respectively provided with a through hole 13 with a diameter of 3 mm, and the lead seal 7 wire passes through the through holes 13 on both sides of the door-shaped hole 14 to lock the operation handle of the ball valve 3 in the door-shaped hole 14.

Claims

1. A guard structure for a multi-channel insertable ultrasonic flow sensor, characterized by: The base (4) is installed on the field pipeline (6), the ball valve (3) is installed on the base (4), the sensor assembly (1) is inserted into the field pipeline (6) through the ball valve (3) and the base (4), the protective cover (2) is arranged above the field pipeline (6), the sensor assembly (1), the ball valve (3) and the base (4) are located in the protective cover (2); the protective cover is composed of an upper section cylinder (9), a middle section cylinder (10) and a lower section cylinder (11) of an integral structure, the upper section cylinder (9) and the lower section cylinder (11) are smoothly connected into an integral through the middle section cylinder (10), the inner diameters of the upper section cylinder (9), the middle section cylinder (10) and the lower section cylinder (11) increase in turn; the top of the upper section cylinder (9) is provided with a cable hole (8), the signal cable of the sensor assembly (1) is led out through the cable hole (8); the lower part of the lower section cylinder (11) is provided with a door-shaped hole (14) corresponding to the operating handle (15) of the ball valve (3), the operating handle (15) of the ball valve (3) is led out from the door-shaped hole (14); the inner surface of the lower section cylinder (11) is tightly combined with the outer surface of the base (4), the bottom of the lower section cylinder (11) is provided with a plurality of threaded holes (12), the fastening screws (5) are fastened with the base (4) through the threaded holes (12); the door-shaped hole (14) is provided with a lead seal (7), the lower section cylinder (11) on the two sides of the door-shaped hole (14) is respectively provided with a through hole (13), the lead seal (7) is led through the through holes (13) on the two sides of the door-shaped hole (14) to lock the operating handle (15) of the ball valve (3) in the door-shaped hole (14).

2. A protective cover structure for a multi-channel insertable ultrasonic flow sensor according to claim 1, characterized in that: The sensor assembly (1) is a multi-channel plug-in ultrasonic flow sensor.

3. A protective cover structure for a multi-channel insertable ultrasonic flow sensor according to claim 1 or 2, characterized in that: The outer shapes of the upper section cylinder (9) and the middle section cylinder (10) are circular truncated cone shapes, and the interiors are circular truncated cone spaces; the outer shape of the lower section cylinder (11) is an octagonal prism truncated cone shape, and the interior is a cylindrical space, the door-shaped hole (14) is arranged on one end face of the octagonal prism truncated cone, and the width and height of the door-shaped hole (14) are sufficient for the operating handle of the ball valve (3) to be led out.

4. A protective cover structure for a multi-channel insertable ultrasonic flow sensor according to claim 1 or 2, characterized in that: The protective cover (2) is a hard plastic cover, which is processed by 3D printing or casting.

5. A protective cover structure for a multi-channel insertable ultrasonic flow sensor according to claim 1 or 2, characterized in that: The number of the fastening screws (5) and the threaded holes (12) is two.

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