CN218330168U - An intermediate component for quick calibration of flowmeter - Google Patents

Abstract

The utility model belongs to the technical field of flowmeter calibration, and discloses an intermediate assembly for rapid calibration of flowmeters. The intermediate assembly for rapid calibration of flowmeters includes a sleeve, an elastic seal and a locking piece. The first end of the sleeve is It is used to install the calibration device. The second end of the sleeve is plugged into the pressure tap, the elastic seal is set between the pressure tap and the sleeve, and the locking piece is sleeved on the sleeve, and the locking piece can slide along the sleeve. The axial direction of the cylinder moves and squeezes the elastic seal. The utility model provides an intermediate assembly for quick calibration of flowmeters. During the calibration process, the elastic seal is elastically deformed by the locking member to seal the gap between the sleeve and the pressure tap and fix the sleeve to the outlet. In the pressure port, a calibration device is installed at the first end of the sleeve for calibration. After the calibration is completed, the staff only need to remove the sleeve from the pressure tap, and insert the transmitter into the pressure tap to weld and fix it.

Description

An intermediate component for quick calibration of flowmeter

technical field

The utility model relates to the technical field of flowmeter calibration, in particular to an intermediate component for rapid calibration of a flowmeter.

Background technique

At present, differential pressure flowmeters are widely used. Most of differential pressure flowmeters are non-standard flowmeters. When installing on site, it is necessary to calibrate the pipeline where the differential pressure flowmeter is installed before installing the non-standard flowmeter.

In the prior art, a differential pressure flowmeter generally includes a main pipe and a transmitter installed on the main pipe. The main pipe is installed on the pipe where the differential pressure flowmeter needs to be installed. Take the pressure port. During the calibration process, the calibration device used for calibration is installed at the pressure tap for calibration. After calibration, the calibration device is removed from the pressure tap and the transmitter is installed at the pressure tap. In order to make the differential pressure flowmeter work stably for a long time without leakage, the transmitter is generally fixed to the pressure port by welding. However, the connection between the calibration device and the pressure tap is provided with an external thread. In order to facilitate calibration, the pressure tap is provided with an internal thread that matches the calibration device. Perform secondary processing to remove the external thread, make the pressure port suitable for inserting and welding the transmitter, reinstall the main pipe, insert the transmitter into the pressure port and weld it, resulting in the calibration of the differential pressure flowmeter And the installation process is cumbersome, which in turn makes the staff work inefficient.

Utility model content

The purpose of the utility model is to provide an intermediate assembly for quick calibration of flowmeters, which can enable the calibration device to be plugged into a pressure-taking port that is not provided with an internal thread for calibration.

For this purpose, the utility model adopts the following technical solutions:

An intermediate assembly for rapid calibration of flowmeters, which can be fixed in the pressure-taking port not provided with internal threads in the main pipeline of differential pressure flowmeters. The intermediate assembly for rapid calibration of flowmeters includes:

Sleeve, the first end of the sleeve is used to install the calibration device, and the second end of the sleeve is inserted into the pressure tapping port;

The elastic seal is arranged between the pressure tap and the sleeve, and the elastic seal can produce elastic deformation to seal the gap between the sleeve and the pressure tap and fix the sleeve in the pressure tap;

The locking part is sleeved on the sleeve, and the locking part can move along the axis of the sleeve and squeeze the elastic sealing part, so that the elastic sealing part produces elastic deformation.

Optionally, the elastic sealing member includes at least one sealing ring, and the sealing ring is sleeved on the second end of the sleeve.

Optionally, the outer wall of the second end of the sleeve is provided with a protrusion extending outward in the circumferential direction, and the sealing ring is placed on the protrusion.

Optionally, the locking part is a stepped structure, the locking part includes a first step part and a second step part, the first step part is provided with a screw part for screwing the locking part, and the second step part faces the seal The ring is set, and the second stepped portion is used to squeeze the sealing ring.

Optionally, a third stepped portion extends outward from the end surface of the second stepped portion, and the outer surface of the third stepped portion is inclined inward to form a taper, the third stepped portion is inserted between the sealing ring and the sleeve, and the second stepped portion The outer surface of the three-step portion can squeeze the inner surface of the sealing ring.

Optionally, the elastic seal includes 3 sealing rings.

Optionally, the sealing ring is made of PTFE.

Optionally, the first end of the sleeve is provided with a first through hole, and an internal thread matched with the calibration device is provided in the first through hole.

Optionally, the locking member is provided with a second through hole, the second through hole is provided with an internal thread, and the outer wall of the sleeve is provided with an external thread matched with the internal thread in the second through hole, and the locking member is connected with the internal thread in the second through hole. Socket threaded connection.

Optionally, the cross section of the first end of the sleeve is a square or a regular hexagon.

The beneficial effects of the utility model:

The utility model provides an intermediate assembly for quick calibration of flowmeters. During the calibration process, the second end of the sleeve is plugged into the pressure-taking port that is not provided with internal threads, and the elastic seal is elastically deformed by the locking member. To seal the gap between the sleeve and the pressure tap and fix the sleeve in the pressure tap, install the calibration device on the first end of the sleeve, and then install the calibration device on the pressure tap for calibration. After the calibration is completed, the staff only need to remove the sleeve from the pressure tap, and insert the transmitter into the pressure tap to weld and fix it to complete the on-site installation. The whole process is convenient and simple, and it should be used for quick calibration of flowmeters Intermediate components can effectively improve the work efficiency of staff.

Description of drawings

Fig. 1 is a schematic diagram of the installation of the intermediate assembly for the rapid calibration of the flowmeter provided by the utility model;

Fig. 2 is a structural schematic diagram of an intermediate component used for quick calibration of a flowmeter provided by the utility model;

Fig. 3 is a cross-sectional view of the intermediate assembly used for quick calibration of the flowmeter provided by the utility model.

In the picture:

100, sleeve; 110, protrusion; 120, first through hole;

200, sealing ring;

300, locking member; 310, first stepped portion; 320, second stepped portion; 330, third stepped portion; 340, second through hole;

400, the main pipeline; 410, the pressure taking port.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail. It can be understood that the specific embodiments described here are only used to explain the utility model, rather than limit the utility model. In addition, it should be noted that, for the convenience of description, only some structures related to the present utility model are shown in the drawings but not all structures.

In the description of the present utility model, unless otherwise clearly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a Integral; it can be mechanically or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

Referring to Fig. 1, a differential pressure flowmeter generally includes a main pipe 400 and a transmitter installed on the main pipe 400 (transmitter is not shown in the figure), and the main pipe 400 is installed in a place where a differential pressure flowmeter needs to be installed. On the pipeline, the main pipeline 400 is provided with a pressure sampling port 410 connected to the transmitter. To install a differential pressure flowmeter on site, the main pipeline 400 needs to be installed on the pipeline where the differential pressure flowmeter needs to be installed, and connected to the main pipeline. Install a calibration device at the pressure port 410 of the 400 for calibration (the calibration device is not shown in the figure). After the calibration is completed, remove the calibration device and weld the transmitter to the pressure port 410, and send the calibration results to the transmitter. Device, to complete the on-site installation of differential pressure flowmeter.

Continuing to refer to FIG. 1 , an intermediate component for rapid calibration of flowmeters provided by this embodiment can be fixed in the pressure tap 410 of the main pipe 400 of the differential pressure flowmeter that is not provided with internal threads, and The calibration device is installed at the pressure tapping port 410 which is not provided with an internal thread through the intermediate assembly for quick calibration of the flowmeter. The intermediate assembly for quick calibration of the flowmeter includes a sleeve 100, an elastic seal and a locking member 300. The first end of the sleeve 100 is used to install the calibration device, and the second end of the sleeve 100 is inserted into the pressure taking port 410. Inside, the elastic seal is arranged between the pressure taking port 410 and the sleeve 100, and the elastic sealing member can produce elastic deformation to seal the gap between the sleeve 100 and the pressure taking port 410 and fix the sleeve 100 to the pressure taking port 410 Inside: the locking member 300 is sheathed on the sleeve 100, and the locking member 300 can move along the axial direction of the sleeve 100 and press the elastic sealing member to cause elastic deformation of the elastic sealing member.

During the calibration process, the second end of the sleeve 100 is plugged into the pressure tapping port 410 that is not provided with an internal thread, and the elastic seal is elastically deformed by the locking member 300 to seal the gap between the sleeve 100 and the pressure tapping port 410 and fix the sleeve 100 in the pressure tapping port 410, install a calibration device on the first end of the sleeve 100, and then install the calibration device on the pressure tapping port 410 for calibration. After the calibration is completed, the staff only need to disassemble the sleeve 100 in the pressure tap 410, and insert the transmitter into the pressure tap 410 for welding and fixing to complete the on-site installation. The whole process is convenient and simple. It is suitable for The intermediate components of the rapid calibration of the flowmeter can effectively improve the work efficiency of the staff.

In this embodiment, as shown in FIG. 2 to FIG. 3 , the elastic sealing member includes at least one sealing ring 200 , and the sealing ring 200 is sleeved on the second end of the sleeve 100 . In this embodiment, the locking member 300 moves along the axial direction of the sleeve 100 and squeezes the sealing ring 200, so that the sealing ring 200 is elastically deformed, thereby sealing the gap between the sleeve 100 and the pressure tapping port 410, and passing through The frictional force between the sealing ring 200 and the pressure detection port 410 fixes the sleeve 100 in the pressure detection port 410 . Further, the elastic sealing member may also be other elastic members, which will not be described in detail here.

Preferably, the sealing ring 200 is made of PTFE, and the sealing ring 200 made of PTFE has good sealing performance. Further, the material of the sealing ring 200 may also be other materials, which will not be described in detail here.

Further, too many or too few sealing rings 200 will affect the sealing between the sleeve 100 and the pressure tapping port 410 , preferably, the elastic sealing member includes three sealing rings 200 .

In this embodiment, referring to FIG. 2 to FIG. 3 , the outer wall of the second end of the sleeve 100 is provided with a protrusion 110 extending outward along the circumferential direction, and the sealing ring 200 is placed on the protrusion 110 . In this embodiment, the locking member 300 moves along the axial direction of the sleeve 100 and the matching projection 110 jointly squeezes the sealing ring 200 so that the sealing ring 200 produces elastic deformation to seal the gap between the sleeve 100 and the pressure tapping port 410 And fix the sleeve 100 in the pressure tapping port 410 . In addition, when the sleeve 100 is taken out from the pressure sampling port 410, the protrusion 110 drives the sealing ring 200 to be taken out together, which is convenient to operate.

The connecting end of the calibration device connected to the sleeve 100 is provided with an external thread. Further, the first end of the sleeve 100 is provided with a first through hole 120, and the first through hole 120 is provided with an internal thread matched with the calibration device. In this embodiment, the first through hole 120 communicates with the pressure-taking port 410 , and the calibration device and the sleeve 100 are fixed through threaded connection. Further, a sealing rubber gasket may be provided between the calibration device and the first through hole 120 , and the calibration device and the first through hole 120 are sealed by the sealing rubber pad. Further, the sealing between the calibration device and the first through hole 120 can also be implemented in other ways, which will not be described in detail here.

Furthermore, the cross-section of the first end of the sleeve 100 is square or regular hexagonal, which is convenient for clamping the wrench at hand, and further facilitates the installation of the calibration device. Further, the cross-section of the first end of the sleeve 100 may also have other shapes, which will not be described in detail here.

In this embodiment, continue to refer to FIG. 2 to FIG. 3 , the locking member 300 is provided with a second through hole 340 , the second through hole 340 is provided with an internal thread, and the outer wall of the sleeve 100 is provided with a second through hole 340 . The internal thread in the through hole 340 matches the connected external thread, and the locking member 300 is threadedly connected with the sleeve 100 . In this embodiment, the movement of the locking member 300 along the axis of the sleeve 100 is realized by twisting the locking member 300 , which has a simple structure and is convenient to operate.

Further, the locking member 300 is a stepped structure, and the locking member 300 includes a first stepped portion 310 and a second stepped portion 320, the first stepped portion 310 is provided with a screwing portion for screwing the locking member 300, the second The second stepped portion 320 is disposed toward the sealing ring 200 , and the second stepped portion 320 is used to squeeze the sealing ring 200 . Specifically, the cross-section of the screwing portion is square or regular hexagonal, which facilitates clamping of the wrench and further facilitates the screwing of the locking member 300 . Further, the screw part can also be in other forms, which will not be described in detail here. In this implementation, one wrench is used to clamp the first end of the sleeve 100, and the other wrench is used to screw the locking member 300, so that the end surface of the second stepped portion 320 is in contact with the end surface of the sealing ring 200 facing the end of the second stepped portion 320. Fitting and pressing the seal ring 200 with the protrusion 110 , so that the seal ring 200 produces elastic deformation to seal the gap between the sleeve 100 and the pressure tap 410 , and fix the sleeve 100 in the pressure tap 410 .

Further, the end surface of the second stepped portion 320 has a third stepped portion 330 extending outward, and the outer surface of the third stepped portion 330 is inclined inward to form a tapered shape, and the third stepped portion 330 is inserted between the sealing ring 200 and the sleeve 100 between, and the outer surface of the third stepped portion 330 can press the inner surface of the sealing ring 200 . In this embodiment, the locking member 300 is screwed so that the third stepped portion 330 moves toward the sealing ring 200 along the axial direction of the sleeve 100 , and at the same time, the outer surface of the third stepped portion 330 presses the inner surface of the sealing ring 200 , so that the sealing ring 200 is stretched, so that the outer wall of the sealing ring 200 is close to the inner wall of the pressure tapping port 410, and the sealing ring 200 is squeezed together with the second stepped part 320 and the protrusion 110, so as to seal more effectively The gap between the sleeve 100 and the pressure tapping port 410 makes the sleeve 100 more firmly fixed in the pressure tapping port 410 .

For example, the sleeve 100 is inserted into the pressure tapping port 410 that is not provided with internal threads, the first end of the sleeve 100 is clamped with a wrench, and the locking member 300 is screwed by another wrench, so that the locking member 300 presses against the sealing ring 200, so that the outer surface of the third stepped part 330 of the locking member 300 presses the inner surface of the sealing ring 200, the sealing ring 200 is stretched, and then the outer wall of the sealing ring 200 is close to the pressure taking port 410, continue to screw the locking piece 300, so that the end surface of the second stepped portion 320 of the locking piece 300 presses the sealing ring 200 on the protrusion 110, realizing the connection between the sleeve 100 and the pressure tapping port 410. Fixed and sealed. Install the calibration device on the pressure tap 410 for calibration. In addition, when the sealing ring 200 is damaged during use, the locking member 300 is reversely unscrewed to disengage it from the coupling sleeve 100 , and the sealing ring 200 is removed and replaced to ensure the tightness. After the calibration is completed, disassemble the calibration device and the intermediate components used for quick calibration of the flowmeter, and insert the transmitter into the pressure port 410 for welding and fixing to complete the on-site installation work. The whole process is convenient and simple. It is suitable for flowmeters Quickly calibrated intermediate components can effectively improve the work efficiency of staff.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. Various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (10)

1. An intermediate assembly for rapid calibration of a flowmeter, which can be fixed in a pressure tapping port (410) of a main pipeline (400) of a differential pressure flowmeter, wherein the pressure tapping port is not provided with internal threads, and the intermediate assembly for rapid calibration of a flowmeter comprises:

the sleeve (100), a first end of the sleeve (100) is used for installing a calibration device, and a second end of the sleeve (100) is inserted into the pressure taking port (410);

the elastic sealing element is arranged between the pressure taking port (410) and the sleeve (100), and can generate elastic deformation to seal a gap between the sleeve (100) and the pressure taking port (410) and fix the sleeve (100) in the pressure taking port (410);

retaining member (300), retaining member (300) cover is located on sleeve (100), just retaining member (300) can be followed the axis direction of sleeve (100) removes and extrudes elastic sealing element makes elastic sealing element produces elastic deformation.

2. Intermediate assembly for the rapid calibration of a flowmeter according to claim 1, wherein said elastic seal comprises at least one sealing ring (200), said sealing ring (200) being fitted on the second end of said sleeve (100).

3. The intermediate assembly for flowmeter quick calibration according to claim 2, wherein the second end outer side wall of the sleeve (100) is provided with a protrusion (110) extending outwards in the circumferential direction, and the seal ring (200) is placed on the protrusion (110).

4. The intermediate assembly for flowmeter quick calibration according to claim 3, wherein the retaining member (300) is of a stepped structure, the retaining member (300) comprises a first stepped portion (310) and a second stepped portion (320), a screwing portion for screwing the retaining member (300) is provided on the first stepped portion (310), the second stepped portion (320) is provided toward the seal ring (200), and the second stepped portion (320) is used for pressing the seal ring (200).

5. The intermediate assembly for the rapid calibration of a flowmeter according to claim 4, wherein a third step portion (330) extends outwards from the end surface of the second step portion (320), the outer side surface of the third step portion (330) is tapered inwards, the third step portion (330) is inserted between the seal ring (200) and the sleeve (100), and the outer side surface of the third step portion (330) can press the inner side surface of the seal ring (200).

6. Intermediate assembly for the rapid calibration of a flowmeter according to claim 2, characterized in that said elastic seal comprises 3 said sealing rings (200).

7. Intermediate component for the rapid calibration of a flowmeter according to claim 2, wherein the sealing ring (200) is made of PTFE.

8. The intermediate assembly for fast calibration of a flowmeter according to claim 1, wherein the first end of the sleeve (100) is provided with a first through hole (120), and an internal thread for matching connection with the calibration device is arranged in the first through hole (120).

9. The intermediate assembly for fast calibration of a flowmeter according to claim 1, wherein the retaining member (300) defines a second through hole (340), an internal thread is disposed in the second through hole (340), an external thread that is coupled to the internal thread in the second through hole (340) is disposed on an outer sidewall of the sleeve (100), and the retaining member (300) is threadedly coupled to the sleeve (100).

10. Intermediate assembly for the rapid calibration of a flowmeter according to claim 1, wherein the first end of the sleeve (100) has a square or regular hexagonal cross-section.

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