Pipe section type ultrasonic flow sensor capable of being replaced on line

Abstract

The utility model discloses a pipe section type ultrasonic flow sensor capable of being replaced on line, which comprises a pipe section shell, two original joints, two probes, two auxiliary joints and an inner cylinder sealing seat, two through holes are arranged on the inner cylinder sealing seat, and the two through holes are respectively communicated with the two original joints or the two auxiliary joints; according to the pipe section type ultrasonic flow sensor capable of being replaced on line, two new probes are installed through the two auxiliary connectors instead of two original connectors, or the two new probes are installed through the two original connectors instead of the two auxiliary connectors, an inner cylinder sealing seat is rotated in a matched mode, and an inner cavity of the inner cylinder sealing seat is communicated with the two auxiliary connectors or the two original connectors; and the outer wall of the inner cavity of the sealing seat of the inner cylinder is always in contact with the inner wall of the pipe section shell and is in a sealed state, so that liquid in the inner cavity of the sealing seat is not leaked, and the replacement of the probe can be completed without detaching flanges at the two ends of the pipe section shell, thereby realizing the online replacement of the probe.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe section type ultrasonic flowmeters, in particular to a pipe section type ultrasonic flow sensor which can be replaced online. Background Art

[0002] The pipe section type ultrasonic flow meter is an ultrasonic sensor (commonly known as probe) accurately installed on pipe sections of different specifications and standards. The pipe section and the probe are integrated into one, forming a measuring instrument with the secondary instrument. It consists of an ultrasonic sensor and an instrument (converter). The sensor is installed on the measured pipe section, and the instrument and the sensor are connected by a special ultrasonic twisted pair shielded signal cable.

[0003] At present, the pipe section in the pipe section type ultrasonic flowmeter is directly fixed and connected to the required measuring pipeline, and the probe is directly installed on the wall of the pipe section with a sealing thread. After the probe on the pipe section is removed, a hole for installing the probe will remain on the pipe section; therefore, if the probe is replaced when liquid flows inside the pipe section, the liquid flowing inside the pipe section will flow out after the old probe is pulled out, that is, the pipe section type ultrasonic flowmeter in the prior art cannot complete the probe replacement online. Utility Model Content

[0004] The utility model aims to solve the problem that the probe of the pipe section type ultrasonic flow meter in the prior art cannot be replaced online, and proposes a pipe section type ultrasonic flow sensor which can be replaced online.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An online replaceable pipe segment type ultrasonic flow sensor comprises a pipe segment housing, two original joints and two probes, wherein the two probes are respectively threadedly installed in the two original joints, and further comprises:

[0007] Two auxiliary joints are fixedly mounted on the pipe section housing and correspond to the two original joints;

[0008] The inner cylinder sealing seat is coaxially rotatably arranged in the pipe section shell. Two through holes are arranged on the inner cylinder sealing seat. The two through holes are respectively connected to the two original joints or the two auxiliary joints. In the present application, two new probes are installed by replacing the two original joints with the two auxiliary joints, and then the inner cylinder sealing seat is rotated to connect the inner cavity of the inner cylinder sealing seat and the two auxiliary joints to each other, thereby realizing online replacement of the probe.

[0009] Preferably, the end of the original joint or the auxiliary joint is threadedly connected with a screw plug or a nut seat, the head end of the probe is fixedly connected with an external threaded joint, the external threaded joint is coaxially provided with a hexagonal hole, and the external threaded joint and the nut seat are threadedly connected.

[0010] Preferably, a protruding limit block is arranged on the periphery of the inner tube sealing seat, a limit slide groove is arranged on the inner wall of the pipe section housing, and the protruding limit block is arranged in the limit slide groove.

[0011] Preferably, flanges are fixedly provided at both ends of the pipe section shell, a flow meter is threadedly mounted on the upper end of the pipe section shell, inner ring grooves are provided on both side end faces of the pipe section shell, sealing rings 1 are respectively extruded between the two ends of the pipe section shell and the two flanges, and the two sealing rings 1 are respectively provided in the two inner ring grooves.

[0012] Preferably, sealing rings 2 are extruded between the two ends of the inner cylinder sealing seat and the two flanges, and the two sealing rings 2 are respectively arranged on the two outer ring grooves at the two ends of the inner cylinder sealing seat, and the two sealing rings 2 are respectively extruded and connected with the two flanges.

[0013] Preferably, a fixed block is fixedly provided on one side of the protruding limit block, a push handle is fixedly installed on the top of the fixed block, a sliding hole is provided in the pipe section shell, the fixed block is slidably installed in the sliding hole, a sealing cover is provided on the periphery of the fixed block, and a rubber pad is provided between the sealing cover and the pipe section shell.

[0014] Compared with the prior art, the utility model provides a pipe segment type ultrasonic flow sensor that can be replaced online, which has the following beneficial effects:

[0015] The online replaceable pipe segment type ultrasonic flow sensor installs two new probes by replacing two original joints with two auxiliary joints, or installs two new probes by replacing two original joints with two auxiliary joints, and then the inner tube sealing seat is rotated to connect the inner cavity of the inner tube sealing seat with the two auxiliary joints or the two original joints, and the outer wall of the inner cavity of the inner tube sealing seat is always in contact with the inner wall of the pipe segment shell body, which is in a sealed state, and there will be no leakage of liquid in the inner cavity of the sealing seat. The replacement of the probe can be completed without disassembling the flanges at both ends of the pipe segment shell body, thereby realizing the online replacement of the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an online replaceable pipe segment type ultrasonic flow sensor proposed by the utility model;

[0017] Figure 2 This is an exploded view of an online replaceable pipe segment type ultrasonic flow sensor proposed by the utility model;

[0018] Figure 3 It is a side view of a pipe segment housing and an inner tube sealing seat in a pipe segment type ultrasonic flow sensor that can be replaced online proposed by the utility model;

[0019] Figure 4 A perspective view of a pipe segment housing and an inner tube sealing seat in a pipe segment type ultrasonic flow sensor that can be replaced online proposed by the utility model;

[0020] Figure 5 The utility model provides a schematic diagram of the connection structure of a probe and a nut seat in a pipe segment type ultrasonic flow sensor that can be replaced online.

[0021] In the figure: 1. pipe section shell; 2. flange; 3. flow meter; 4. original joint; 5. auxiliary joint; 6. inner groove; 7. sealing ring 1; 8. sliding hole; 9. screw plug; 10. nut seat; 11. inner tube sealing seat; 12. perforation; 13. outer groove; 14. sealing cover; 15. push handle; 16. sealing ring 2; 17. probe; 18. fixing block; 19. protruding limit block; 20. limit slide groove; 21. rubber pad; 22. external thread joint; 23. internal hexagon hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Reference Figure 1-5A pipe segment type ultrasonic flow sensor that can be replaced online includes a pipe segment housing 1, two flanges 2, a flow calculator 3, two original joints 4 and two probes 17. The two flanges 2 are respectively welded and fixedly installed on the two ends of the pipe segment housing 1. The flow calculator 3 is threadedly installed on the upper end of the pipe segment housing 1 and can be disassembled and installed. The two original joints 4 are tilted and fixedly installed on both sides of the pipe segment housing 1, and the inner cavities of the two original joints 4 are on the same straight line, and the middle end connected between the two original joints 4 passes through the central axis of the pipe segment housing 1. The two probes 17 are respectively threadedly installed in the two original joints 4. The above parts are mainly the components of the pipe segment type ultrasonic flowmeter in the prior art. Next, the improved and attached parts of this application are introduced.

[0025] In this embodiment, two auxiliary joints 5 are fixedly installed on the pipe segment housing 1, and the two auxiliary joints 5 correspond to the two original joints 4. The auxiliary joint 5 on the left and the original joint 4, or the auxiliary joint 5 on the right and the original joint 4 are on the same radial cross-section of the pipe segment housing 1. Because the inner cavity of the pipe segment housing 1 in this application needs to complete the replacement of the probe 17 without continuous flow, an inner cylinder sealing seat 11 that ensures the normal transportation of liquid in the pipe segment housing 1 and can switch the installation passage of the probe 17 needs to be provided in the inner cavity of the pipe segment housing 1, that is, an inner cylinder sealing seat 11 is coaxially rotated in the pipe segment housing 1, and two through holes 12 are provided on the inner cylinder sealing seat 11. The two through holes 12 are respectively connected to the two original joints 4 or the two auxiliary joints 5. The outer wall of the inner cylinder sealing seat 11 and the inner wall of the pipe segment housing 1 are contact-sealed. In this application, two new probes 17 are installed by replacing the two original joints 4 with two auxiliary joints 5, and then the inner cylinder sealing seat 11 is rotated to connect the inner cavity of the inner cylinder sealing seat 11 and the two auxiliary joints 5 to each other, so as to realize the online replacement of the probe 17;

[0026] A protruding stopper 19 is provided on the periphery of the inner tube sealing seat 11, and a limit slot 20 is provided on the inner wall of the pipe section housing 1. The protruding stopper 19 is rotatably arranged in the limit slot 20 within a preset angle range, that is, the structural design of the protruding stopper 19 and the limit slot 20 is used to limit the rotation range and positioning of the inner tube sealing seat 11. When the protruding stopper 19 abuts against the inner walls of the limit slot 20 on both sides, the two through holes 12 are respectively connected to the two original joints 4 or the two auxiliary joints 5.

[0027] A fixing block 18 is fixedly provided on one side of the protruding limit block 19 by a screw rod, a push handle 15 is fixedly installed on the top of the fixing block 18, a sliding hole 8 is provided in the pipe segment housing 1, and the fixing block 18 is slidably installed in the sliding hole 8, a sealing cover 14 is provided on the periphery of the fixing block 18, a rubber pad 21 is provided between the sealing cover 14 and the pipe segment housing 1, the size of the sealing cover 14 and the rubber pad 21 is much larger than the size of the sliding hole 8, and the opening of the sliding hole 8 is always covered, and the rubber pad 21 has good sealing performance, and the inner cylinder sealing seat 11 can be driven to coaxially rotate along the inner wall of the pipe segment housing 1 by pushing the push handle 15 and the transmission of the fixing block 18;

[0028] Inner ring grooves 6 are provided on the end faces of both sides of the pipe section housing 1, and the inner ring grooves 6 are used to install a sealing ring 1 7. A sealing ring 1 7 is extruded between the two ends of the pipe section housing 1 and the two flanges 2 for sealingly connecting the pipe section housing 1 and the two flanges 2. Two sealing rings 17 are respectively arranged in the two inner ring grooves 6, and sealing rings 2 16 are extruded between the two ends of the inner tube sealing seat 11 and the two flanges 2. The two sealing rings 2 16 are respectively arranged on the outer ring grooves 13 at the two ends of the inner tube sealing seat 11, that is, the outer ring grooves 13 for installing the sealing ring 2 16 are provided at both ends of the inner tube sealing seat 11, which are mainly used to seal and connect the inner tube sealing seat 11 and the two flanges 2. The inner and outer double rings are sealed, and the service life is longer.

[0029] In this embodiment, the end of the original joint 4 or the auxiliary joint 5 is threadedly connected with a screw plug 9 or a nut seat 10, and the head end of the probe 17 is fixedly connected with an external threaded joint 22. The external threaded joint 22 is coaxially provided with an internal hexagonal hole 23. The external threaded joint 22 and the nut seat 10 are threadedly connected. The threaded connection is mainly used to facilitate later disassembly, installation and replacement.

[0030] The utility model provides a process for replacing the flow calculator 3 and two probes 17 in the pipe segment type ultrasonic flow sensor which can be replaced online. The process is as follows: check whether the new flow calculator 3 and the two probes 17 are connected normally, then unscrew the screw plugs 9 at the ends of the two auxiliary joints 5, and then tighten the new probes 17 into the two new nut seats 10, and then insert the two new probes 17 into the two auxiliary joints 5, and screw the nut seats 10 thereon at the ends of the auxiliary joints 5, and place the new probes 17 against the outer wall of the pipe segment housing 1, and then insert the hexagonal wrench into the hexagonal hole 23 of the old probe 17 in the original joint 4, and move the old probe 17 outward along the nut seat 10 thereon without affecting the inner tube sealing seat 11. Rotate, then push the push handle 15, and the fixed block 18 drives the inner tube sealing seat 11 to coaxially rotate along the inner wall of the pipe section shell 1, and connect the two auxiliary joints 5 through the through-hole 12 in the inner tube sealing seat 11, that is, connect the two new probes 17 and the inner cavity of the inner tube sealing seat 11, and then insert the hexagonal wrench into the hexagonal hole 23 of the new probe 17 in the auxiliary joint 5, and move the new probe 17 inward along the nut seat 10 thereon, and insert it into the through-hole 12. At this time, the replacement of the probe 17 has been preliminarily completed and it can be used normally. Next, there is the replacement of the new flow calculator 3 and the removal of the two old probes 17, and the two original joints 4 are blocked;

[0031] Similarly, two new probes 17 can also be installed into the two original joints 4 to replace the old probes 17 in the two auxiliary joints 5. There is no need to disassemble the pipe section shell 1. The probes 17 can be replaced online while the flow in the inner tube sealing seat 11 is not interrupted.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An online replaceable pipe segment type ultrasonic flow sensor, comprising a pipe segment housing (1), two primary connectors (4) and two probes (17), wherein the two probes (17) are respectively threadedly installed in the two primary connectors (4), characterized in that: Also includes: Two auxiliary joints (5) are fixedly mounted on the pipe section housing (1) and correspond to the two original joints (4); An inner tube sealing seat (11) is coaxially rotatably arranged in the pipe section housing (1); two through holes (12) are arranged on the inner tube sealing seat (11); the two through holes (12) are respectively connected to the two original joints (4) or the two auxiliary joints (5); when the probe (17) is replaced online, the two auxiliary joints (5) are used to install two new probes (17); the two through holes (12) arranged on the inner tube sealing seat (11) are connected to the two auxiliary joints (5).

2. The online replaceable pipe segment type ultrasonic flow sensor according to claim 1, characterized in that: The end of the primary joint (4) or the secondary joint (5) is threadedly connected to a thread plug (9) or a nut seat (10), the head end of the probe (17) is fixedly connected to an external threaded joint (22), the external threaded joint (22) is coaxially provided with an internal hexagonal hole (23), and the external threaded joint (22) and the nut seat (10) are threadedly connected.

3. The online replaceable pipe segment type ultrasonic flow sensor according to claim 1, characterized in that: A protruding limit block (19) is arranged on the periphery of the inner tube sealing seat (11), a limit sliding groove (20) is arranged on the inner wall of the pipe section housing (1), and the protruding limit block (19) is arranged in the limit sliding groove (20).

4. The online replaceable pipe segment type ultrasonic flow sensor according to claim 1, characterized in that: Flanges (2) are fixedly provided at both ends of the pipe section housing (1), a flow meter (3) is threadedly installed on the upper end of the pipe section housing (1), inner ring grooves (6) are provided on both side end surfaces of the pipe section housing (1), and sealing rings (7) are respectively extruded between the two ends of the pipe section housing (1) and the two flanges (2), and the two sealing rings (7) are respectively arranged in the two inner ring grooves (6).

5. The online replaceable pipe segment type ultrasonic flow sensor according to claim 4, characterized in that: A sealing ring 2 (16) is extruded and arranged between the two ends of the inner tube sealing seat (11) and the two flanges (2), and the two sealing rings 2 (16) are respectively arranged on the two outer ring grooves (13) at the two ends of the inner tube sealing seat (11), and the two sealing rings 2 (16) are respectively extruded and connected to the two flanges (2).

6. The online replaceable pipe segment type ultrasonic flow sensor according to claim 3, characterized in that: A fixed block (18) is fixedly arranged on one side of the protruding limit block (19), a push handle (15) is fixedly installed on the top of the fixed block (18), a sliding hole (8) is arranged in the pipe section shell (1), and the fixed block (18) is slidably installed in the sliding hole (8), a sealing cover (14) is arranged on the periphery of the fixed block (18), and a rubber pad (21) is arranged between the sealing cover (14) and the pipe section shell (1).

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