RU2311618C1 - Device for mounting and dismounting ultrasonic converters - Google Patents

Abstract

FIELD: measuring technique.

SUBSTANCE: device comprises section of pipeline with through opening in the wall and branch pipe welded to the pipeline above the branch pipe. The ultrasonic converter is set in the branch pipe, receives connecting wires, and is pressed to the branch pipe with a fastening nut. The valving member (ball cock) is mounted on the branch pipe with the thread provided on its outer side. The pipe of the converter enters the hollow mounting wrench whose bottom end is shaped into hexahedron corresponding to the hexahedral opening made in the fastening nut and permitting it to set into the opening. The screw with spring is set in the space of the wrench from above and is screwed on the end of the pipe when the ultrasonic converter is mounted or dismounted. The top chamber that receives the threaded rod with a handle is set in the top nut of the valving member with the use of a thread. The assembling wrench and rod are connected with the adapter through the stop screws. The adapter is mounted inside the sealing piston. The top end of the chamber is provided with a bearing secured to the chamber by means of a lock nut. The nut of the rod with a handle is set in the bearing.

EFFECT: expanded functional capabilities and enhanced reliability.

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Description

The present invention relates to measuring technique and can be used in the oil, chemical and gas industry, in particular for measuring the flow of liquid and gas.

A known ultrasonic flow meter (AS USSR No. 1493873, class G01F 1/66, Bull. No. 26, publ. 07/15/89), containing a straight section of the pipeline, a pipe welded to the pipeline, in which a hole is made coaxial pipe, ultrasonic a transducer located in the pipe on which the adapter chamber is fixed with screws with a pressure relief device made in the form of a screw; a spring-loaded shutter is pivotally mounted inside the adapter chamber, which is pressed against the inlet in the adapter chamber housing, made coaxially in the nozzle, the feed mechanism with a screw, a handle and a feed nut, the ultrasonic transducer is equipped with a fastening element to the nozzle made in the form of a thread with a thrust end and a removable cylindrical shank installed in the inlet of the transition chamber housing with the possibility of rotation and axial movement, a cylindrical shank contains at one end a mechanical grip made in the form of a recess of a tetrahedral shape, turning into a cylindrical bore and engaging with an end protrusion of the anal a shape on the ultrasonic transducer, and on the other - a turnkey tetrahedral protrusion and a cracker with an elongated groove inserted into the recess of the feed mechanism nut, a connector mounted on the ultrasonic transducer, seals, and sealing joints.

This ultrasonic flow meter, as well as the claimed device for mounting and dismounting ultrasonic transducers, comprises a pipeline section with a through hole in the pipe wall, a pipe welded to the pipe, an acoustic transducer located in the pipe, a screw, a handle, and gaskets. However, the absence of a gate valve, an installation key, a sealing piston, an adapter, locking screws, a rod, a bearing, a rod nut and a union nut complicates the mounting and dismounting of the ultrasonic transducer, and also reduces the operational capabilities and reliability of the known device.

The closest in technical essence is a device for mounting and dismounting ultrasonic transducers (RF patent No. 2064663, class G01F 1/66, publ. 07/27/1996), containing a section of the pipeline with a through hole in the wall of the pipeline, a pipe welded to the pipeline above the hole in it, an ultrasonic transducer installed in the nozzle and pressed by a bolt to the nozzle using the first thread through the first sealing gasket, there are threaded holes in the bolt into which the screws are screwed onto the nozzle along the second thread the first chamber is installed through the second sealing gasket, inside which there is an end grip having a hexagonal recess in the lower part that engages with the hex head of the bolt; an ultrasonic transducer has a ring that fixes the bolt during axial movement of the ultrasonic transducer onto the first chamber the valve is installed with the third sealing gasket, allowing the first chamber to be sealed after dismantling; the valve is installed on the valve through the thread after h the fourth chamber gasket is the second chamber, to the wall of which a valve is welded for supplying excess pressure during pressure testing of the chambers after installation and pressure relief during dismantling, in the second chamber there is an end-grip rod having a travel stop and a gland packing, pressed by a nut, a handle is installed on the stem end, fixed with a nut.

This device for mounting and dismounting ultrasonic transducers, as well as the inventive device for mounting and dismounting ultrasonic transducers, contains a section of the pipeline with a through hole in the wall of the pipe, a pipe welded to the pipeline above the hole in it, an ultrasonic transducer with a tube in which its connecting wires, the ultrasonic transducer is installed in the nozzle and is pressed to the nozzle through the gasket, internal and external threads on the nozzle, s pressure valve, screw, chamber, at both ends of which a thread is made, the camera is threaded at the lower end through the gasket to the gate valve, which allows the chamber to be sealed after dismantling, the gasket, the rod located in the chamber, and a union nut installed on the end cameras, a rod handle mounted on the end of the rod. However, the absence of a mounting nut, mounting wrench, spring, sealing piston, adapter, two retaining screws, a bearing, a rod nut with a handle and their connections with each other and with the other elements of the device complicates the device and reduces the reliability of its operation due to the presence of a second chamber with a valve for supplying overpressure and the need to have and use a source of overpressure and, in addition, reduces the safety of working with the device, since it is necessary to work with a source of high pressure in the field, and if the pressure of the source of excess pressure is lower than the pressure in the pipeline, then in the known device may cause an accident and depressurization of the pipeline with the release into the atmosphere of the transported product.

The basis of the invention is the task of improving the device for mounting and dismounting ultrasonic transducers by simplifying it, increasing the reliability of its operation and increasing the safety of working with the device.

The problem is solved in that in a known device for mounting and dismounting ultrasonic transducers containing a section of the pipeline with a through hole in the wall of the pipe, a pipe welded to the pipeline above the hole in it, an ultrasonic transducer with a tube in which its connecting wires are placed, while the ultrasonic transducer is installed in the nozzle and is pressed to the nozzle through the first sealing gasket, internal and external threads made on the nozzle, the second sealing a gasket, a locking bolt, a screw, a chamber with thread at both ends, a chamber using thread at the lower end is installed through a third sealing gasket onto a locking bolt, a rod located in the chamber, a union nut, a rod handle mounted on the end of the rod, according to the invention, a fixing nut, a mounting wrench, a spring, a sealing piston, an adapter, first and second locking screws, a bearing, a rod nut and a rod nut handle are introduced, the fixing nut has a thread on the outer surface and an opening the ultrasonic transducer is pressed to the nozzle inside and along the internal thread, the gate valve is fixed to the nozzle through the second sealing gasket using its external thread and allows the nozzle to be sealed after dismantling the ultrasonic transducer, the mounting key is hollow inside, and the ultrasonic transducer tube enters from below, and on top of the cavity of the mounting key is a screw made with an internal cavity in which the thread is cut, the spring is placed on the screw, the lower end of the the mounting wrench is made matching the shape of the hole in the mounting nut with the ability to enter this hole, the adapter is located inside the sealing piston and the first locking screw is connected to the mounting key, the rod is threaded and connected to the adapter using the second locking screw, the bearing is mounted on the upper end the chamber and fixed on it with a union nut with a thread on the upper end of the chamber, the stem nut is mounted on the rod by its thread and fixed in the bearing, the handle of the stem nut is connected to the piece nut ok.

The introduction of the mounting nut, mounting key, spring, sealing piston, adapter, two locking screws, bearing, stem nut and stem nut handle, the implementation of the mounting nut, mounting key, screw and, in particular, the execution of the threaded rod, the installation of the gate valve on the nozzle through the second sealing gasket using an external thread and making connections between the elements of the device allows you to rotate one of the handles and hold the other stationary to inform the necessary elements of the device up or down, apply the necessary efforts to the converter for its removal and landing in the pipe, to the camera for screwing it into the gate valve or unscrewing from it and to other elements of the device and thereby makes it possible to exclude the second chamber and valve from the device for supplying excess pressure and refuse to use the source of excess pressure, which simplified the device, increased the reliability of its operation and the safety of the device.

The drawing shows a device for mounting and dismounting ultrasonic transducers.

A device for mounting and dismounting ultrasonic transducers comprises a pipeline section 1 with a through hole in the pipe wall, a pipe 2 with a transducer seat welded to the pipe 1 above the hole in it, an ultrasonic transducer 3 installed in the seat of the pipe 2, an ultrasonic transducer tube 4 3, in which its connecting wires are placed and one end of which is rigidly connected to the ultrasonic transducer 3, and at the other end of the tube 4 there is a thread, the first seal a wearable gasket 5 located on a seat between the ultrasonic transducer 3 and the pipe 2, an internal thread 6 made on the pipe 2, a fixing nut 7, which has a thread on the outer surface and a hole inside, for example, an hexagonal one, and compresses the ultrasonic transducer 3 along the thread 6 to the pipe 2, an external thread 8, made on the upper end of the pipe 2, a shutoff valve 9, for example a ball valve, mounted with a thread 8 on the pipe 2 through a second gasket 10, an assembly key 11, the lower the center of which is made identical in shape to the hole in the mounting nut 7, for example, hexagonal, and with the ability to enter this hole, the key 11 is made hollow inside, while the tube 4 of the ultrasonic transducer 3 enters from below and the screw enters into the key cavity 11 from above 12 with a spring 13 having a thread in the internal cavity, while mounting or dismounting the ultrasonic transducer 3, the screw 12 is screwed onto the end of the tube 4 of the ultrasonic transducer 3, the sealing piston 14, the adapter 15 placed inside the body piston 14, the first locking screw 16, with which the mounting key 11 is connected to the adapter 15, the chamber 17, in the lower part of which a thread 18 is made, with which the chamber 17 is mounted in the upper nut of the gate valve 9 through the third sealing gasket 19, the rod 20, placed inside the chamber 17, threaded and connected to the adapter 15 using the second locking screw 21, a thread 22 is made on the upper end of the chamber 17, a bearing 23 mounted on the upper end of the chamber 17 and secured to it with a union nut 24 with a thread 22, the stem nut 25, which is mounted on the stem 20 by its thread and fixed in the bearing 23, the stem nut 26 handle, which is connected to the stem nut 25, and the stem handle 27, which is mounted on the end of the stem 20.

The ultrasonic transducer 3 is supplied with a tube 4, in which its connecting wires are placed and which is rigidly connected to the ultrasonic transducer 3, and a thread is cut at the end of the tube 4.

The sealing piston 14 divides the chamber 17 into lower and upper parts, while it separates the lower part from the upper part hermetically. To ensure tightness, the sealing piston 14 contains sealing gaskets (not indicated by numbers in the drawing) on the outer surface in contact with the inner surface of the chamber 17 and on the inner surface in contact with the surface of the adapter 15. In the assembled device for mounting and dismounting ultrasonic transducers, the sealing piston 14 may move, ensuring the tightness of the lower part of the chambers 17, up so that the bottom of the ultrasonic transducer 3 was 2-5 centimeters higher than the bottom the end of the chamber, and down so that the locking screw 16 falls below the lower end of the chamber 17.

The necessary movements of the elements of the device are made by holding one of the handles stationary and rotating the other. So, while holding the handle 27, the stationary rod 20 is also stationary and when the handle 26 is rotated, the camera body 17 rotates and moves up or down, depending on the direction of rotation, relative to the rod 20. When holding the handle 26, the camera body 17 is also stationary when the handle is rotated 27, the stem 20 rotates and moves up or down, depending on the direction of rotation, relative to the camera body 17.

A device for mounting and dismounting ultrasonic transducers works as follows.

In the mounted state on the pipe 1 there is a pipe 2 welded to it, in which an ultrasonic transducer 3 is placed, pressed by a fastening nut 7 along the internal thread 6 of the pipe 2 to its seat through the sealing gasket 5. The connecting wires from the transducer 3 are led out through the pipe 4 and connected to the circuit of the measuring device (not shown in the drawing), into which it is included. The gate valve 9 and the camera 17 are not connected to the pipe 2 and are stored separately with other parts of the device.

If necessary, dismantle the converter 3, for example, in order to audit it, the connecting wires are disconnected from the circuit and placed inside the tube 4, the gate valve 9 is opened, the tube 4 is passed through it and screwed to the pipe 2 through thread 8, after installing the gasket 10. The lower end of the mounting wrench 11 is inserted into the hole of the mounting nut 7, while the tube 4 is inserted into the mounting wrench 11. From above, the screw 12 with the spring 13 is inserted into the mounting wrench 11 and the mounting wrench 11 is secured together the nut 7 and the transducer 3 by screwing the screw 12 onto the end of the tube 4. Then, holding the handle 26 still, rotate the handle 27, the rod 20 moves downward, the adapter 15 with the locking screw 16 extends from the chamber 17 until the locking screw 16 will be lower than the lower end of the chamber 17, then using the locking screw 16 connect the adapter 15 and the mounting key 11, after which, holding the handle 27 still, rotate the handle 26, the housing of the camera 17 is lowered onto the upper nut of the gate valve 9 and screwed into it, previously into top nut the gate valves 9 insert the sealing gasket 19. Then, holding the handle 26 motionless and rotating the handle 27, unscrew the fastening nut 7 from the pipe 2 and lift it and the transducer 3 into the chamber 17. If, over time, the installation location of the ultrasonic transducer 3 becomes clogged and it “sticks” to the hole of the nozzle 2, then, when the handle 27 is rotated, a force is created that is sufficient to detach from the transducer 3 from the nozzle 2, it comes off and rises with the mounting key 11 (unlike the prototype, where “axial force” must be applied). After separation from the installation site, when lifting the transducer 3 along the nozzle 2, the product transported through the pipeline enters the internal cavities of the nozzle 2, the gate valve 9 and the lower part of the chamber 17, but it does not pass beyond the sealing piston 14.

After raising the transducer 3 above the lower end of the chamber 17, close the shutter valve 9 and, holding the handle 26 stationary and rotating the handle 27, raise the rod 20 until the stop screw 21 abuts against the bearing 23, while the pressure in the lower part of the chamber 17 located under the piston decreases sharply 14. Next, unscrew the chamber 17 from the upper nut of the gate valve 9, rotating the handle 26 and holding the handle 27 motionless. At the same time, the transported product, which filled the chamber 17, is poured into a container, the product loss is not greater than the chamber volume 17. A shut-off valve 9 is still connected to the pipe 2, which is closed, and thus, leakage of the product transported through the pipeline through the pipe 2 is excluded. In the chamber 17 disconnected from the shut-off valve 9, holding the handle 26 still and rotating the handle 27 from the camera 17 extend the adapter 15 with the locking screw 16 below the lower end of the chamber 17 and unscrew the locking screw 16, disconnecting the adapter 15 from the mounting key 11, screw the screw 12 from the tube 4, while releasing the ultrasonic transducer 3, dismantling of which chen. Next, the necessary actions are performed with the ultrasonic transducer 3 and after that it is installed in the pipe 2.

When installing the ultrasonic transducer 3 in the pipe 2 - mounting the ultrasonic transducer 3, the lower end of the mounting key 11 is inserted into the hole of the mounting nut 7, which is installed on the ultrasonic transducer 3, while the tube 4 is inserted inside the mounting key 11. From above, the screw 12 is inserted into the mounting key 11 with the spring 13 and fasten together the mounting wrench 11, the fixing nut 7 and the transducer 3 by screwing the screw 12 onto the end of the tube 4. Holding the handle 26 still and rotating the handle 27, the transition is extended from the chamber 17 One 15 with the locking screw 16 below the lower end of the chamber 17 and, using the locking screw 16, connect the adapter 15 and the mounting key 11, then, holding the handle 26 still and rotating the handle 27 in the opposite direction, push the adapter 15 and the mounting key 11 c the mounting nut 7 and the converter 3 into the chamber 17. Next, the lower end of the chamber 17 is inserted into the upper nut of the gate valve 9, holding the handle 27 motionlessly and turning the handle 26, screw the camera body 17 into the upper nut of the gate valve 9 into which it is previously inserted and the sealing gasket 19, after which the shutter valve 9 is opened and holding the handle 26 motionlessly and rotating the handle 27, lower the mounting key 11 with the converter 3 into the pipe 2 until it stops and screw the fixing nut 7 into the pipe 2, in which the sealing gasket 5 is located. After that, holding the handle 27 still and rotating the handle 26, unscrew the chamber 17 from the upper nut of the shutter 9 and lift it until the locking screw 16 is below the lower end of the chamber 17. When this happens, unscrew the locking screw 16, remove the chamber 17 and screw the screw 12 from the tube 4. Next, remove the mounting wrench 11 and unscrew the gate valve 9. In the pipe 2 is a converter 3 that tightly closes the hole in the pipeline and which is ready for connection to the circuit in which it is used.

Claims (1)

A device for mounting and dismounting ultrasonic transducers, comprising a section of the pipeline with a through hole in the wall of the pipe, a pipe welded to the pipe above the hole in it, an ultrasonic transducer with a tube in which its connecting wires are placed, while the ultrasonic transducer is installed in the pipe and preloaded to pipe through the first sealing gasket, internal and external threads made on the pipe, the second sealing gasket, shut-off valve, screw, chamber, on at the ends of which the thread is made, the chamber using the thread at the lower end is installed through the third sealing gasket on the gate valve, the rod located in the chamber, the union nut, the rod handle mounted on the end of the rod, characterized in that a fixing nut is inserted into it, mounting a key, a spring, a sealing piston, an adapter, first and second locking screws, a bearing, a rod nut and a rod nut handle, a fixing nut has threads on the outer surface and the hole inside and along the internal thread compresses the ultrasonic transducer to the nozzle, the gate valve is mounted on the nozzle through the second sealing gasket using its external thread and allows the nozzle to be sealed after dismantling the ultrasonic transducer, the mounting key is hollow inside, and the ultrasonic transducer tube enters from below and the mounting key cavity from above includes a screw made with an internal cavity in which the thread is cut, the spring is placed on the screw, the lower end of the mounting key is made matching in shape e with a hole in the fastening nut with the ability to enter this hole, the adapter is located inside the sealing piston and connected to the mounting key with the first locking screw, the rod is threaded and connected to the adapter with the second locking screw, the bearing is mounted on the upper end of the chamber and mounted on it with a cap nut using a thread on the upper end of the chamber, the stem nut is mounted on the stem by its thread and fixed in the bearing, the stem nut handle is connected to the stem nut.