CN219495327U - Space division differential pressure type flowmeter - Google Patents

Abstract

The utility model discloses a space division differential pressure type flowmeter, which belongs to the technical field of differential pressure type flowmeters and comprises an inlet component, wherein a contraction section is arranged on one side of the inlet component, an outlet component is arranged on one side of the contraction section, which is far away from the inlet component, and an outlet connecting flange is arranged on one side, which is far away from the inlet component, of the outlet component; according to the utility model, by arranging the extension device, a worker can adjust the whole length of the flowmeter to a certain extent by adjusting the position of the extension pipe when needed, so that the installation requirements under different conditions are better met, and the practicability of the flowmeter is improved; according to the utility model, the buffer device is arranged, so that the flowmeter can buffer the impact of collision and the like encountered by the contraction section through the rubber shell and the elastic sponge when needed, thereby reducing the possibility of deformation of the contraction section due to collision and the like, ensuring the precision of a measuring result and further improving the working capacity of the flowmeter.

Description

Space division differential pressure type flowmeter

Technical Field

The utility model belongs to the technical field of differential pressure type flowmeters, and particularly relates to a space-division differential pressure type flowmeter.

Background

Differential pressure flow meters are based on the throttling principle of fluid flow, and utilize the pressure differential created by the fluid flowing through a throttling device to achieve flow measurement. It is one of the most mature and most commonly used methods for measuring flow in current production.

Chinese patent application No. 202221229481.X discloses space-division differential pressure flowmeter, mainly includes entry pipe (2), shrink section (5) and outlet pipe (8), entry pipe (2), shrink section (5) and outlet pipe (8) link together in proper order, a serial communication port, the surface of entry pipe (2) and outlet pipe (8) evenly is equipped with a plurality of equalizing pipes (3) along the circumference, the inboard of equalizing pipe (3) is linked together with entry pipe (2) or outlet pipe (8) inside, and the outside of equalizing pipe (3) that are located entry pipe (2) is connected with entry equalizing ring (4), and equalizing pipe (3) outside that are located on outlet pipe (8) are connected with export equalizing ring (7), the welding has pressure taking nozzle stub (6) on entry equalizing ring (4) and export equalizing ring (7). The utility model has the advantages of short installation distance, small pressure loss and simple structure.

1. The problem that the whole length of the flowmeter cannot be adjusted exists in the above-mentioned published patent, so that the installation requirements under different conditions are difficult to meet, and the practicability of the flowmeter is further reduced; 2. the above-mentioned published patent has the problem that the shrink section is liable to be deformed due to collision or the like to the precision of measurement is liable to be influenced, and then the working capacity of the flowmeter is reduced.

Disclosure of Invention

To solve the problems set forth in the background art. The utility model provides a space division differential pressure type flowmeter, which has the characteristics of high practicability and strong working capacity.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an empty differential pressure formula flowmeter, includes the entry subassembly, the shrink section is installed to one side of entry subassembly, and the export subassembly is installed to one side that the entry subassembly was kept away from to the shrink section, and one side that the entry subassembly was kept away from to the export subassembly is provided with export flange, is connected through extension device between export subassembly and the export flange, and the outside of shrink section is provided with buffer.

Preferably, the extension device comprises a fixed pipe, an extension pipe, a threaded hole and a screw rod, the extension pipe is arranged on the inner side of the outlet connecting flange, the fixed pipe is arranged on the outlet assembly and positioned on the inner side of the extension pipe, the screw rod is arranged at the bottom of the extension pipe through threads, and a plurality of threaded holes are formed in positions, corresponding to the screw rod, on the fixed pipe.

Preferably, the extension device further comprises a sliding groove and a sliding block, the sliding groove is formed in the top of the fixed pipe, and the sliding block is installed at the inner side of the extension pipe and located at the inner side of the sliding groove.

Preferably, the extension device further comprises a knob, and the knob is arranged below the screw rod.

Preferably, the buffer device comprises a rubber shell, elastic sponge, a damper and a mounting sleeve, wherein two mounting sleeves are arranged on the outer side of the contraction section, the rubber shell is mounted on the outer side of the mounting sleeve, a plurality of dampers are mounted between the mounting sleeve and the rubber shell and at the position which is located on the inner side of the rubber shell, and the elastic sponge is mounted on the inner side of the rubber shell and at the position which corresponds to the plurality of dampers.

Preferably, the buffer device further comprises a connecting ring, the connecting ring is arranged on the outlet assembly and positioned at a position, far away from one side of the inlet assembly, of the two mounting sleeves, and the two mounting sleeves are connected with the connecting ring through screws.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, by arranging the extension device, a worker can adjust the whole length of the flowmeter to a certain extent by adjusting the position of the extension pipe when needed, so that the installation requirements under different conditions are better met, and the practicability of the flowmeter is improved.

2. According to the utility model, the buffer device is arranged, so that the flowmeter can buffer the impact of collision and the like encountered by the contraction section through the rubber shell and the elastic sponge when needed, thereby reducing the possibility of deformation of the contraction section due to collision and the like, ensuring the precision of a measuring result and further improving the working capacity of the flowmeter.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of the structure of the extension device of the present utility model;

fig. 4 is a schematic structural view of a buffering device according to the present utility model.

In the figure: 1. an inlet assembly; 2. an outlet assembly; 3. an extension device; 31. a fixed tube; 32. a chute; 33. an extension tube; 34. a slide block; 35. a threaded hole; 36. a knob; 37. a screw; 4. an outlet connecting flange; 5. a buffer device; 51. a connecting ring; 52. a rubber shell; 53. an elastic sponge; 54. a damper; 55. a mounting sleeve; 6. and (5) a contraction section.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-4, the present utility model provides the following technical solutions: the utility model provides an empty differential pressure flowmeter, includes entry subassembly 1, and shrink section 6 is installed to one side of entry subassembly 1, and export subassembly 2 is installed to one side that entry subassembly 1 was kept away from to shrink section 6, and one side that entry subassembly 1 was kept away from to export subassembly 2 is provided with export flange 4, is connected through extension device 3 between export subassembly 2 and the export flange 4, and the outside of shrink section 6 is provided with buffer 5.

Specifically, the extension device 3 includes a fixed pipe 31, an extension pipe 33, a threaded hole 35 and a screw 37, the extension pipe 33 is installed on the inner side of the outlet connection flange 4, the fixed pipe 31 is installed on the outlet assembly 2 and located at the inner side of the extension pipe 33, the screw 37 is installed on the bottom of the extension pipe 33 through threads, and a plurality of threaded holes 35 are formed in positions, corresponding to the screw 37, on the fixed pipe 31.

By adopting the above technical scheme, the staff can adjust the whole length of the flowmeter to a certain extent by adjusting the position of the extension pipe 33 when required.

Specifically, the extension device 3 further includes a sliding groove 32 and a sliding block 34, the sliding groove 32 is provided at the top of the fixed tube 31, and the sliding block 34 is installed at a position inside the sliding groove 32 and inside the extension tube 33.

By adopting the above technical scheme, the movement of the extension pipe 33 can be limited to a certain extent.

Specifically, the extension device 3 further includes a knob 36, and the knob 36 is mounted below the screw 37.

By adopting the above technical scheme, the screw 37 is conveniently operated by a worker.

When the flow meter is used in the embodiment, when the flow meter is needed, the knob 36 in the extension device 3 is screwed, so that the screw rod 37 is driven to be separated from the threaded hole 35, then the outlet connecting flange 4 is pulled, so that the extension tube 33 is driven to move outside the fixed tube 31, the whole length of the flow meter is adjusted to a proper size, then the knob 36 is reversely rotated, so that the screw rod 37 is driven to be connected with the proper threaded hole 35, the outlet connecting flange 4 is connected with the inlet assembly 1 and the corresponding pipeline, when fluid passes through the inlet assembly 1, the contraction section 6 and the outlet assembly 2, the pressure difference can be measured through the inlet assembly 1 and the outlet assembly 2, the flow is measured, and the chute 32 and the sliding block 34 play a guiding limiting role.

Example 2

This embodiment differs from embodiment 1 in that: the buffer device 5 comprises a rubber shell 52, an elastic sponge 53, a damper 54 and a mounting sleeve 55, wherein two mounting sleeves 55 are arranged on the outer side of the contraction section 6, the rubber shell 52 is arranged on the outer side of the mounting sleeve 55, a plurality of dampers 54 are arranged between the mounting sleeve 55 and the rubber shell 52 and at positions which are located on the inner side of the rubber shell 52, and the elastic sponge 53 is arranged on the inner side of the rubber shell 52 and at positions which correspond to the plurality of dampers 54.

By adopting the technical scheme, the flowmeter can buffer the impact of collision and the like encountered by the contraction section 6 through the rubber shell 52 when needed, so that the possibility that the contraction section 6 is deformed due to collision and the like is reduced, and the accuracy of a measurement result is ensured.

Specifically, the buffer device 5 further includes a connection ring 51, the connection ring 51 is mounted on the outlet assembly 2 and located at a position of the two mounting sleeves 55 away from the inlet assembly 1, and the two mounting sleeves 55 are connected with the connection ring 51 by screws.

By adopting the above technical scheme, the worker can assemble and disassemble the two mounting sleeves 55 and the upper structure thereof when needed.

When the embodiment is used, when the contraction section 6 encounters impact, the rubber shell 52 and the elastic sponge 53 in the buffer device 5 are elastically deformed, so that the impact is buffered, the possibility that the contraction section 6 is deformed and damaged is reduced, the damper 54 plays a role in increasing damping, and the connecting ring 51 and the mounting sleeve 55 play a role in connecting and mounting.

The structure and principle of the inlet assembly 1 consisting of inlet connection flange, inlet pipe, pressure equalizing pipe and inlet equalizing ring, the outlet assembly 2 consisting of pressure taking short pipe, outlet equalizing ring and outlet pipe, outlet connection flange 4, and constriction section 6 are disclosed in the differential pressure type air flowmeter disclosed in China patent application No. 202221229481.X, the working principle is that the fluid filling the pipeline of the flowmeter, when it flows through the throttling element in the pipeline of the flowmeter, the flow rate forms local constriction at the flowmeter, so that the flow rate is increased, the static pressure is reduced, and the pressure difference is generated before and after the flowmeter. The larger the fluid flow, the larger the pressure difference is, so that the flow can be measured according to the pressure difference. The measurement method is based on a flow continuity equation or a mass conservation law and a Bernoulli equation or an energy conservation law, and the pressure difference is not only related to the flow rate but also related to other factors, such as the angle of a contraction section of a space division differential pressure type flowmeter or the physical properties of fluid in a pipeline, and the pressure difference generated under the same flow rate is different.

The structure and principle of the damper 54 in the present utility model are disclosed in a damping device for an intelligent household washing machine disclosed in chinese patent application No. 201721446985.6, and the working principle thereof is to utilize damping characteristics to slow down mechanical vibration and consume kinetic energy.

The working principle and the using flow of the utility model are as follows: when the flowmeter is needed to be used, the knob 36 in the extension device 3 is screwed, so that the screw rod 37 is driven to be separated from the threaded hole 35, then the outlet connecting flange 4 is pulled, so that the extension pipe 33 is driven to move outside the fixed pipe 31, the whole length of the flowmeter is adjusted to a proper size, then the knob 36 is reversely rotated, so that the screw rod 37 is driven to be connected with the proper threaded hole 35, the outlet connecting flange 4 is connected with the inlet assembly 1 and the corresponding pipeline, when fluid passes through the inlet assembly 1, the contraction section 6 and the outlet assembly 2, the pressure difference can be measured through the inlet assembly 1 and the outlet assembly 2, the flow is measured, and the chute 32 and the sliding block 34 play a role of guiding and limiting; when the contraction section 6 encounters impact, the rubber shell 52 and the elastic sponge 53 in the buffer device 5 are elastically deformed, so that the impact is buffered, the possibility that the contraction section 6 is deformed and damaged is reduced, the damper 54 plays a role in increasing damping, and the connecting ring 51 and the mounting sleeve 55 play a role in connecting and mounting.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A differential pressure type space flowmeter comprising an inlet assembly, characterized in that: the inlet assembly is characterized in that a contraction section is arranged on one side of the inlet assembly, an outlet assembly is arranged on one side of the contraction section, which is far away from the inlet assembly, an outlet connecting flange is arranged on one side, which is far away from the inlet assembly, of the outlet assembly, the outlet assembly is connected with the outlet connecting flange through an extension device, and a buffer device is arranged on the outer side of the contraction section.

2. A differential pressure type flowmeter according to claim 1, characterized in that: the extension device comprises a fixed pipe, an extension pipe, a threaded hole and a screw rod, wherein the extension pipe is arranged on the inner side of the outlet connecting flange, the fixed pipe is arranged on the outlet assembly and positioned on the inner side of the extension pipe, the screw rod is arranged at the bottom of the extension pipe through threads, and a plurality of threaded holes are formed in positions, corresponding to the screw rod, on the fixed pipe.

3. A differential pressure type flowmeter according to claim 2, characterized in that: the extension device further comprises a sliding groove and a sliding block, the sliding groove is formed in the top of the fixed pipe, and the sliding block is installed at the inner side of the extension pipe and located at the inner side of the sliding groove.

4. A differential pressure type flowmeter according to claim 2, characterized in that: the extension device further comprises a knob, and the knob is arranged below the screw rod.

5. A differential pressure type flowmeter according to claim 1, characterized in that: the buffer device comprises a rubber shell, elastic sponge, a damper and a mounting sleeve, wherein two mounting sleeves are arranged on the outer side of the contraction section, the rubber shell is mounted on the outer side of the mounting sleeve, a plurality of dampers are mounted between the mounting sleeve and the rubber shell and located at the inner side of the rubber shell, and the elastic sponge is mounted at the inner side of the rubber shell and at the position corresponding to the plurality of dampers.

6. A differential pressure type flowmeter according to claim 5, characterized in that: the buffer device further comprises a connecting ring, the connecting ring is arranged on the outlet assembly and located at the position, far away from the inlet assembly, of the two mounting sleeves, and the two mounting sleeves are connected with the connecting ring through screws.