Gas ultrasonic flow sensor V-mode structure capable of being installed and maintained on line

Abstract

The utility model relates to a gas ultrasonic flow sensor V-mode structure capable of being installed and maintained on line, and belongs to the technical field of gas flow sensors. According to the technical scheme, an installation hole (14) is formed in the side wall of a pipeline (3) where a reflection block (4) is installed, a base (6) is welded to the outer wall of the pipeline where the installation hole is located, a channel (15) is formed in the center of the base, and a ball valve (8) is installed on the base (6); the front surface of the reflecting block is a reflecting surface, the back surface of the reflecting block is provided with a connecting rod (5), and the connecting rod sequentially penetrates through a mounting hole (14), a channel (15) of the base and a through hole of a ball valve (8); the inner diameters of the channel and the ball valve through hole are larger than the outer diameter of the reflection block. According to the utility model, production halt is not needed, the reflection block is installed in an on-line plug-in manner, the reflection block on the pipeline can be pulled out on line at any time according to signal quality and signal intensity change conditions, the operation is simple and convenient, cokes and crystals on the surface of the reflection block are removed, stable and reliable instrument measurement is ensured, and continuous production is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas ultrasonic flow sensor V mode structure of online installation maintenance, belong to gas ultrasonic flow sensor technical field. BACKGROUND

[0002] At present, gas ultrasonic flow sensor is installed with pair of insertion and single insertion, when pipe diameter≤600mm, pair of insertion is generally used for installation. When installing in pair, two sensors are installed on the two sides of the horizontal direction of pipeline diameter, since the sound path of gas sensor measurement is generally 160-270mm, it is relatively short, and the length of sensor is about 350-500mm, when the pipeline to be measured is arranged in underground pipe gallery or ground near wall and the like, considering the space requirement of sensor plug-in installation, the net size of pipeline to pipe gallery wall or ground pipeline to wall should be at least 800-1000mm, which is difficult to meet the requirement in general industrial site. Due to insufficient space, it is difficult to ensure that the gas sensor is installed at a proper position, thereby affecting the accurate measurement of instrument. If the correct installation of sensor and the accuracy of instrument are to be ensured, instrument well must be built, which is labor-consuming, time-consuming and money-consuming. Chinese patent CN201120279823.4, named "flow sensor of V-shaped reflective ultrasonic wave heat meter with detachable reflecting block", discloses that the first ultrasonic transducer and the second ultrasonic transducer are respectively arranged obliquely on one side of the metal pipe body, and the reflection surface positions of the first ultrasonic transducer and the second ultrasonic transducer adopt the same reflection position, which is on the opposite side of the metal pipe body. The flow sensor further comprises a reflecting block. The metal pipe body is provided with a mounting hole for fixing and mounting the reflecting block at the reflection position. The reflecting block is detachably mounted in the mounting hole of the metal pipe body, and the top of the reflecting block is provided with a reflecting plane for reflecting the first ultrasonic transducer and the second ultrasonic transducer. The two obliquely arranged V-shaped sensors (transducers) solve the above problems. However, the gas ultrasonic flow sensor is prone to cause coking and crystallization on the inner wall of the pipeline due to the complex composition of the conveyed gas. If coking and crystallization occur on the reflecting surface, the signal reflection deviates, the sensor cannot receive the signal, and the instrument cannot be measured or the measurement accuracy is affected. The detachable reflecting block of the prior art is complicated to operate, cannot be installed and maintained online, and affects the continuous production. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a kind of gas ultrasonic flow sensor V mode structure of online installation maintenance, without stopping production, inserting the reflecting block online, which can be pulled out from the pipeline at any time according to the change of signal quality and signal intensity, is simple and easy to operate, removes the coking and crystallization on the surface of reflecting block, ensures the stable and reliable measurement of instrument, guarantees the continuous production, and solves the above technical problems of the prior art.

[0004] The technical scheme of the utility model discloses

[0005] A gas ultrasonic flow sensor V mode structure of online installation and maintenance, containing gas ultrasonic sensor one, gas ultrasonic sensor two, pipeline, reflection block, connecting rod, base and ball valve, gas ultrasonic sensor one and gas ultrasonic sensor two are installed on the horizontal direction of the same side of pipeline, the other side of pipeline is vertically installed reflection block, the extension line of the center line of gas ultrasonic sensor one and gas ultrasonic sensor two is V-shaped, and the intersection is just located at the center of the reflection surface of reflection block;The side wall of the pipeline of installing reflection block is equipped with mounting hole, and the outer wall of mounting hole is welded with base, and the center of base is equipped with passageway, and ball valve is installed on base;The front of reflection block is reflection surface, and the back is provided with connecting rod, and connecting rod passes through mounting hole, passageway of base and through hole of ball valve in proper order;The inner diameter of passageway and ball valve through hole is greater than the outer diameter of reflection block.

[0006] Further, the outer diameter of the connecting rod is less than or equal to the outer diameter of the reflection block.

[0007] Further, one end of the ball valve through hole is communicated with the passageway of the base, and the other end is provided with a sealing nipple, and the inner diameter of the sealing nipple is the same as that of the ball valve through hole.

[0008] Further, a sealing washer is arranged between the base and the ball valve.

[0009] Further, the material of the reflection block is Hastelloy HS, and the upper surface is a reflection surface with a roughness of 1.6.

[0010] Further, the two ends of the sealing nipple are connected with the ball valve and the fastening nut respectively through threads, and the sealing nipple is provided with an O-shaped sealing ring and a wedge-shaped sealing ring, the fastening nut is tightened, the wedge-shaped sealing ring is compressed by a flat washer, and the sealing of the sealing nipple and the connecting rod is realized.

[0011] The utility model discloses the beneficial effect that: without stopping production, online plug-in type installation reflection block can be pulled out from the pipeline at any time according to the change of signal quality and signal intensity, the operation is simple, the reflection block is removed, the surface is cleaned, the instrument measurement is stable and reliable, and the continuous production is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the schematic diagram of the utility model embodiment one;

[0013] Figure 2 It is the schematic diagram of the utility model embodiment two;

[0014] In the figure: gas ultrasonic sensor one 1, gas ultrasonic sensor two 2, pipeline 3, reflecting block 4, connecting rod 5, base 6, sealing washer 7, ball valve 8, sealing nipple 9, O-shaped sealing ring 10, wedge-shaped sealing ring 11, flat washer 12, fastening nut 13, mounting hole 14, channel 15. DETAILED DESCRIPTION

[0015] The utility model will be further explained by examples in combination with the drawings.

[0016] A gas ultrasonic flow sensor V mode structure which can be installed and maintained on line, comprising gas ultrasonic sensor one 1, gas ultrasonic sensor two 2, pipeline 3, reflecting block 4, connecting rod 5, base 6 and ball valve 8, the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 are installed on the same side of the pipeline 3 in the horizontal direction, the other side of the pipeline 3 is vertically installed reflecting block 4, the extension line of the center line of the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 is V-shaped, and the intersection is just located at the center of the reflecting surface of the reflecting block 4; the side wall of the pipeline 3 where the reflecting block 4 is installed is provided with mounting hole 14, the outer wall of the pipeline of the mounting hole 14 is welded with base 6, the center of the base 6 is provided with channel 15, and the ball valve 8 is installed on the base 6; the front surface of the reflecting block 4 is the reflecting surface, the back surface is provided with connecting rod 5, the connecting rod 5 passes through the mounting hole 14, the channel 15 of the base 6 and the through hole of the ball valve 8 in sequence; the inner diameter of the channel 15 and the through hole of the ball valve 8 is greater than the outer diameter of the reflecting block 4.

[0017] The outer diameter of the connecting rod 5 is less than or equal to the outer diameter of the reflecting block 4.

[0018] One end of the through hole of the ball valve 8 is communicated with the channel 15 of the base 6, the other end is provided with sealing nipple 9, and the inner diameter of the sealing nipple 9 is the same as that of the through hole of the ball valve 8.

[0019] The sealing washer 7 is arranged between the base and the ball valve 8.

[0020] The material of the reflecting block is hastelloy HS, the upper surface is the reflecting surface, and the roughness is 1.6.

[0021] The two ends of the sealing nipple 9 are connected with the ball valve 8 and the fastening nut 13 respectively through threads, the sealing nipple 9 is provided with O-shaped sealing ring 10 and wedge-shaped sealing ring 11, the fastening nut 13 is screwed, the wedge-shaped sealing ring 11 is pressed by flat washer 12, and the sealing of the sealing nipple 9 and the connecting rod 5 is realized.

[0022] Example one, refer to the attached Figure 1, the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 are installed obliquely on the same side of the field pipeline, the outer diameter of the pipeline is D, the oblique angle of the sensor is a, and the extension line of the center lines of the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 is V-shaped. The installation position of the reflecting block is selected on the other side of the field pipeline, which is located in the corresponding position between the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2. The base 6 is welded, the ball valve 8 is installed, then the installation hole 14 is opened on the pipeline under pressure through the ball valve 8 and the base 6, the connecting rod 5 with the reflecting block 4 is sequentially inserted through the through hole of the ball valve 8, the channel 15 of the base 6 and the installation hole 14, the reflecting block 4 is installed to the predetermined position, the extension line of the center lines of the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 is V-shaped, and the intersection is located at the center of the reflecting surface of the reflecting block 4. The two ends of the sealing nipple 9 are connected with the ball valve 8 and the fastening nut 13 through threads respectively, the sealing nipple 9 is provided with an O-shaped sealing ring 10 and a wedge-shaped sealing ring 11, the fastening nut 13 is tightened, the wedge-shaped sealing ring 11 is pressed by the flat gasket 12, and the sealing of the sealing nipple 9 and the connecting rod 5 is realized.

[0023] The total length of the reflecting block and the connecting rod in the embodiment is 150 mm, which is relatively short, the net size of the pipeline from the underground pipe gallery wall or the ground wall is usually more than 500 mm, the installation requirement of the reflecting block can be met, and a surface well does not need to be built, which saves labor, time and money. When the instrument display signal quality and signal strength are not good after running for a period of time, the reflecting block 4 and the connecting rod 5 can be pulled out into the sealing nipple 9 without stopping the production of the pipeline, the ball valve is closed (online maintenance of the reflecting block), the reflecting block 4 is taken out, the coking and crystallization on the surface of the reflecting block 4 are treated, and then the reflecting block 4 is reinstalled, so that the instrument can be measured stably and accurately for a long time.

[0024] In the embodiment, the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 are also inserted and installed on the pipeline in a similar way to the reflecting block, and a base needs to be welded on the pipeline and a ball valve needs to be installed, so that the online installation can be realized without stopping the production.

[0025] The base 6 used by the reflecting block 4 has a straight cylinder structure, and the inner diameter is relatively small (compared with the base used by the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2), and the installation hole 14 opened on the pipeline has a relatively small inner diameter, so that the structure is compact.

[0026] Since the gas ultrasonic sensor one 1, the gas ultrasonic sensor two 2 and the reflecting block 4 are installed online, they can be installed without stopping the production of the pipeline, and they can be pulled out at any time according to the changes of signal quality and signal strength, the coking and crystallization on the surface are cleaned, and stable and reliable measurement of the instrument is ensured.

[0027] In the embodiment, the total length of the reflecting block and the connecting rod is 150 mm, the pipeline is connected with the reflecting block through the base, the ball valve is installed on the pipeline, the reflecting block is inserted into the sealing nipple, the sealing nipple is connected with the connecting rod through the fastening nut, the flat gasket is arranged between the sealing nipple and the connecting rod, the reflecting block is installed on the pipeline, the extension line of the center lines of the gas ultrasonic sensor one and the gas ultrasonic sensor two is V-shaped, the intersection is located at the center of the reflecting surface of the reflecting block, and the reflecting block is sealed with the connecting rod. Figure 2Since the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2 need a larger inner diameter of the channel 15 (compared with the installation of the reflection block), in order to be universal with the base 6 inserted and installed with the reflection block 4, the inner and outer diameters of the base 6 for the reflection block 4 are increased, the inner diameter of the channel 15 of the base 6 is larger, the installation hole 14 opened on the pipeline has a larger inner diameter, there is a larger space between the reflection block 4 and the pipeline wall, the base 6 for the reflection block 4 is the same as the base inserted and installed with the gas ultrasonic sensor one 1 and the gas ultrasonic sensor two 2, and can be interchanged, thereby improving the installation efficiency and convenience.

[0028] The channel 15 of the base 6 can be stepped, the inner diameter of the channel near the ball valve 8 is smaller, and the inner diameter of the channel near the installation hole 14 is larger.

[0029] Since the gas ultrasonic sensor one 1, the gas ultrasonic sensor two 2 and the reflection block 4 can be installed online, the pipeline can be installed without stopping production, the gas ultrasonic sensor one 1, the gas ultrasonic sensor two 2 and the reflection block 4 can be pulled out at any time according to the change of signal quality and signal strength, the surface coking and crystalline body can be cleaned, and the stable and reliable instrument measurement can be ensured.

Claims

1. A gas ultrasonic flow sensor V-configuration structure which can be installed and repaired on-line, characterized by: The utility model relates to a kind of gas ultrasonic sensor, including gas ultrasonic sensor one (1), gas ultrasonic sensor two (2), pipeline (3), reflecting block (4), connecting rod (5), pedestal (6) and ball valve (8), gas ultrasonic sensor one (1) and gas ultrasonic sensor two (2) are installed in the horizontal direction of the same side of pipeline (3) obliquely, reflecting block (4) is vertically installed on the other side of pipeline (3), the extension line of the center line of gas ultrasonic sensor one (1) and gas ultrasonic sensor two (2) is V-shaped, and the intersection is just located the center of the reflecting surface of reflecting block (4);Its characterized in that: the side wall of pipeline (3) where installing reflecting block (4) is equipped with mounting hole (14), mounting hole (14) is welded on the outer wall of pipeline with pedestal (6), the center of pedestal (6) is equipped with passageway (15), and ball valve (8) is installed on pedestal (6);The front of reflecting block (4) is reflecting surface, and back is provided with connecting rod (5), connecting rod (5) passes mounting hole (14), passageway (15) of pedestal (6) and through hole of ball valve (8) in sequence;The inner diameter of passageway (15) and ball valve (8) through hole is greater than the outer diameter of reflecting block (4).

2. The gas ultrasonic flow sensor according to claim 1, wherein: The outer diameter of connecting rod (5) is less than or equal to the outer diameter of reflecting block (4).

3. A gas ultrasonic flow sensor according to claim 1 or 2, characterized in that: One end of the through hole of ball valve (8) communicates with the passageway (15) of pedestal (6), and the other end is provided with sealing nipple (9), and the inner diameter of sealing nipple (9) is same with the inner diameter of the through hole of ball valve (8).

4. The gas ultrasonic flow sensor according to claim 3, wherein: Two ends of sealing nipple (9) are connected with ball valve (8) and fastening nut (13) respectively by thread, sealing nipple (9) is built-in O-shaped sealing ring (10) and wedge-shaped sealing ring (11), fastening nut (13) is screwed, wedge-shaped sealing ring (11) is pressed by flat washer (12), and sealing nipple (9) is sealed with connecting rod (5).

5. The gas ultrasonic flow sensor according to claim 1 or 2, wherein: Sealing washer (7) is arranged between pedestal (6) and ball valve (8).

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