CN219869817U

CN219869817U - Flow sensor with replaceable flow channel

Info

Publication number: CN219869817U
Application number: CN202321323367.8U
Authority: CN
Inventors: 田勇; 许满江; 郝明亮; 范宏强; 蒋龙
Original assignee: Zhengzhou Weisen Electronics Technology Co ltd
Current assignee: Zhengzhou Weisen Electronics Technology Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-10-20
Anticipated expiration: 2033-05-29

Abstract

The utility model discloses a flow sensor with a replaceable flow channel, which comprises a tube seat, a flow channel tube detachably arranged in the tube seat and a flow detection module connected to the tube seat; the tube seat and the runner tube are provided with capillary inlets and outlets which are communicated with the flow detection module and the inside of the runner tube. According to the utility model, the runner pipe is movably connected in the pipe seat, so that the runner pipe is replaceable, the structural scheme can be optimized rapidly by only changing the internal structure of the runner pipe in the early performance verification stage, and meanwhile, the structure of the runner pipe is adjusted according to different flow detection ranges, so that different application scenes can be met by replacing corresponding joints for different pipe diameters.

Description

Flow sensor with replaceable flow channel

Technical Field

The utility model relates to the technical field of sensors, in particular to a flow sensor with a replaceable flow channel.

Background

Currently, the main flow products of flow sensors are mostly integrated injection molded parts, which usually have only one runner. And flow sensors of different measuring ranges need to be designed with different flow channels to meet the performance requirements. Therefore, one type of flow sensor cannot meet the use of different measuring ranges. From the perspective of mass production, the runner shells of all the different measuring ranges are required to be opened for producing the flow sensors of the different measuring ranges, so that the cost is high, and for a certain measuring range product with low sales but market, the mold opening cost can be retracted for a longer period to enter a profit stage; meanwhile, the measuring range sections required by different mechanisms and industrial application scenes are different, and the corresponding gas flow sensors are different in model selection. Therefore, we propose a flow sensor with a replaceable primary flow channel.

Disclosure of Invention

Aiming at the defects in the background technology, the utility model provides a flow sensor with a replaceable flow channel, which solves the problem that the flow sensor in the prior art cannot meet the use of different measuring ranges.

The technical scheme of the utility model is realized as follows:

a flow sensor with replaceable flow channels comprises a tube seat, a flow channel tube detachably arranged in the tube seat and a flow detection module connected to the tube seat; the tube seat and the runner tube are provided with capillary inlets and outlets which are communicated with the flow detection module and the inside of the runner tube.

Further, one end of the tube seat is detachably connected with an inlet joint, the other end of the tube seat is detachably connected with an outlet joint, and a main runner communicated with the inlet joint and the outlet joint is arranged in the runner tube.

Further, a rectifying grid is arranged in the main flow channel, and comprises a grid plate, a triangular plate, a rhombus plate or a rhombus plate which are axially arranged perpendicular to the main flow channel, or a plurality of rectifying plates which are circumferentially and uniformly distributed in the main flow channel, or a circular plate or a concentric circular plate which is coaxially arranged in the main flow channel.

Further, the runner pipe is provided with a capillary inlet and a capillary outlet which are communicated with the main runner, and the pipe seat is provided with a pipe seat capillary inlet and a pipe seat capillary outlet which are respectively corresponding to the capillary inlet and the capillary outlet.

Further, a pipe sealing groove for installing a flow passage sealing ring is circumferentially arranged on the outer side of the flow passage pipe.

Further, the flow detection module is provided with a sealing ring groove which corresponds to the tube seat capillary inlet and the tube seat capillary outlet respectively and is used for installing a tube seat sealing ring, the flow detection module is provided with a positioning column, and the tube seat is provided with an outer positioning groove which is matched with the positioning column.

Further, a main flow channel of the tube seat for accommodating the flow channel tube is arranged in the tube seat, and a matched positioning structure is arranged between the main flow channel of the tube seat and the flow channel tube.

Further, one end of the main flow channel of the tube seat is provided with a tube seat inlet for connecting with the inlet joint, and the other end of the main flow channel of the tube seat is provided with a tube seat outlet groove communicated with the outlet joint.

Further, a pipe plug is arranged in the pipe seat outlet groove, and the outlet connector is connected with the pipe seat through the pipe plug.

Further, a filter screen sealing gasket is clamped between the pipe plug and the end part of the pipe seat outlet groove, and the filter screen sealing gasket is in abutting fit with the runner pipe.

The utility model has the beneficial effects that:

1. according to the utility model, by arranging the replaceable runner pipe, the structural scheme can be optimized rapidly only by changing the internal structure of the runner pipe in the early performance verification stage, and meanwhile, the structure of the runner pipe is adjusted according to different flow detection ranges, so that different application scenes can be met by replacing corresponding joints for different pipe diameters;

2. the inlet joint and the outlet joint can be replaced according to the specification of the external pipe diameter by detachably connecting the inlet joint and the pipe seat, and further, the product application requirements of different measuring ranges can be met by replacing the runner pipe and the inlet joint;

3. the filter screen sealing gasket is arranged and connected between the main runner of the pipe seat and the end face of the runner pipe, so that air flow can be prevented from flowing out from a gap at the joint of the end faces, and the air quantity is lost;

4. by arranging the sealing rings between the runner pipe and the pipe seat and between the pipe seat and the flow detection module, the air flow can be effectively prevented from flowing out of a gap at the joint of the capillary inlet and the capillary outlet, and the air consumption can be effectively avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 3 is a schematic view of a flow channel tube according to the present utility model;

FIG. 4 is a schematic view of a tube holder according to the present utility model;

fig. 5 is a schematic bottom view of the flow detection module according to the present utility model.

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 any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, the flow sensor with a replaceable flow channel according to embodiment 1 of the present utility model includes a tube seat 3, a flow channel tube 4 detachably disposed in the tube seat 3, and a flow detection module 1 connected to an upper side of the tube seat 3, wherein the flow channel tube 4 may have a plurality of different structures for easy replacement. Specifically, as shown in fig. 2, a main flow channel 307 of the tube base 3 is provided for accommodating the flow channel tube 4, and two ends of the tube base 3 are detachably connected with an inlet joint 10 and an outlet joint 8 which are communicated with the main flow channel 307 of the tube base and coaxially arranged. The flow channel pipe 4 in the main flow channel 307 of the pipe seat can be fixed by installing the inlet joint 10 and the outlet joint 8; by removing the inlet joint 10 and the outlet joint 8, the runner pipe 4 can be put into the stem main runner 307 or taken out from the stem main runner 307, and replacement of the runner pipe 4 can be achieved. The tube seat 3 and the runner tube 4 are provided with capillary inlets and outlets which are communicated with the flow detection module 1 and the inside of the runner tube 4, so that fluid in the runner tube 4 can enter the flow detection module 1 to realize flow detection.

In addition, the inlet joint 10 and the outlet joint 8 at the two ends can also be replaced according to the specification of the external pipe diameter, and further the product application requirements of different measuring ranges can be met by replacing the runner pipe 4 and the inlet joint.

Further, as shown in fig. 3, a main flow channel communicating with the inlet joint 10 and the outlet joint 8 is provided in the flow channel pipe 4. The main flow channel has a pipe inlet 401 communicating with the inlet joint 10 at one end and a pipe outlet 404 communicating with the outlet joint 8 at the other end.

Further, as shown in fig. 3, the upper side of the flow channel pipe 4 is provided with a capillary inlet 402 and a capillary outlet 403 which communicate with the main flow channel. As shown in fig. 4, the upper side of the stem 3 is provided with a stem capillary inlet 302 and a stem capillary outlet 304 which correspond to and communicate with the capillary inlet 402 and the capillary outlet 403, respectively.

Further, as shown in fig. 3, a pipe seal groove 406 for mounting the flow path seal ring 9 is provided circumferentially outside the flow path pipe 4 such that the flow path seal ring 9 is provided between the flow path pipe 4 and the pipe seat main flow path 307. And tube seal grooves 406 and flow channel seal ring 9 are provided with four, two of four tube seal grooves 406 being located on both sides of capillary inlet 402 and the other two being located on both sides of capillary outlet 403. After the runner sealing ring 9 is installed, the gaps between the sealing runner pipe 4 and the main runner 307 at the two sides of the capillary inlet 402 and the capillary outlet 403 are respectively sealed, and fluid is prevented from entering between the runner pipe 4 and the main runner 307 from the capillary inlet 402 or the capillary outlet 403.

Embodiment 2 is different from embodiment 1 in that, as shown in fig. 4, one end of the main flow channel 307 is provided with a pipe seat inlet 301 for connecting to the inlet joint 10, and the other end is provided with a pipe seat outlet groove 305 communicating with the outlet joint 8. In this embodiment, the inlet fitting 10 is threadably coupled to the stem inlet 301.

Further, as shown in fig. 2, a plug 6 is disposed in the outlet groove 305 of the pipe seat, and the plug 6 is connected to the outlet groove 305 of the pipe seat by a plug screw 7. The end of the plug 6 remote from the outlet groove 305 of the socket is connected to the outlet fitting 8. In this embodiment, the plug 6 is screwed into the outlet fitting 8.

Example 3 differs from example 1 in that, as shown in fig. 4, the screen gasket 5 is sandwiched between the plug 6 and the end of the stem outlet groove 305. Specifically, the stem outlet groove 305 is disposed coaxially with the stem primary flow passage 307, and the diameter of the stem outlet groove 305 is larger than that of the stem primary flow passage 307, so that the inner end of the stem outlet groove 305 forms an annular inner end surface. One end of the pipe plug 6 facing the inner end surface of the pipe seat outlet groove 305 is provided with an annular groove, the filter screen sealing gasket 5 is arranged in the groove, and after the pipe plug 6 is assembled and fastened, the filter screen sealing gasket 5 is tightly pressed on the inner end surface of the pipe seat outlet groove 305, so that the filter screen sealing gasket 5 is tightly matched with the end surface of the flow channel pipe 4, the function of filtering fluid is achieved, and the connection between the flow channel pipe 4 and the pipe plug 6 is sealed.

Embodiment 4 differs from embodiment 1 in that a mating positioning structure is provided between the stem main flow passage 307 and the flow passage pipe 4. Specifically, as shown in fig. 3 and 4, one end of the main flow channel 307 of the tube holder is provided with an inner positioning groove 306, and the flow channel tube 4 is provided with a flow channel tube positioning rib 405 which is engaged with the inner positioning groove 306. During assembly, the inlet and outlet of the runner pipe 4 are prevented from being misaligned with the capillary inlet and outlet of the pipe seat by the engagement of the runner pipe positioning ribs 405 and the positioning grooves 306.

Embodiment 5 differs from embodiment 1 in that, as shown in fig. 3, a rectifying gate 407 is disposed in the main flow channel. The rectifying grid 407 may be a plurality of rectifying plates fixed in the main flow channel and uniformly distributed circumferentially, and the outer side of the rectifying plate is connected with the main flow channel and the inner side of the rectifying plate is an arc edge. In another embodiment, the rectifying grid comprises a grid plate or a triangle or a rhombus plate which is arranged in the main runner perpendicular to the axial direction of the main runner; or the rectification grating comprises a circular plate or a concentric circular plate coaxially arranged in the main runner. The concentric circular plate comprises one or more annular plates which are arranged at intervals and concentric with the main runner but have different diameters, the annular plates are coaxially arranged in the main runner, and the annular plates are connected with the main runner through a plurality of radial connecting plates. In addition, the rectification grid can be fixed in the main runner and can be nested in the main runner. In other embodiments, the structure of the rectifying gate may be adjusted as desired.

Embodiment 6 is different from embodiment 1 in that, as shown in fig. 5, two seal grooves 101 corresponding to the tube seat capillary inlet 302 and the tube seat capillary outlet 304 are provided on the lower side of the flow detection module 1, and the seal grooves 101 are used for installing the tube seat seal ring 2, so as to seal the gap between the outer sides of the upper ends of the tube seat capillary inlet 302 and the tube seat capillary outlet 304 and the flow detection module 1, and prevent the leakage of fluid from the gap between the upper ends of the tube seat capillary inlet 302 and the tube seat capillary outlet 304 and the flow detection module 1.

Further, as shown in fig. 5, the lower side of the flow detection module 1 is provided with a positioning column 102, the upper side of the tube seat 3 is provided with an outer positioning groove 303 engaged with the positioning column 102, and the tube seat sealing ring 2 is prevented from being misaligned with the tube seat capillary inlet 302 and the tube seat capillary outlet 304 by the engagement of the positioning column 102 and the outer positioning groove 303.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A flow sensor with replaceable flow channels, characterized in that: comprises a tube seat (3), a runner tube (4) detachably arranged in the tube seat (3) and a flow detection module (1) connected to the tube seat (3); the tube seat (3) and the runner tube (4) are provided with capillary inlets and outlets which are communicated with the flow detection module (1) and the inside of the runner tube (4).

2. The flow sensor of the replaceable flow channel of claim 1, wherein: one end of the tube seat (3) is detachably connected with an inlet joint (10), the other end of the tube seat is detachably connected with an outlet joint (8), and a main runner communicated with the inlet joint (10) and the outlet joint (8) is arranged in the runner tube (4).

3. The flow sensor of the replaceable flow channel of claim 2, wherein: the flow straightening device is characterized in that a flow straightening grid (407) is arranged in the main flow passage, and the flow straightening grid (407) comprises grid plates, triangular plates, or rhombic plates which are axially arranged perpendicular to the main flow passage, or a plurality of flow straightening plates which are circumferentially and uniformly distributed in the main flow passage, or annular plates or concentric circular plates which are coaxially arranged in the main flow passage.

4. A flow sensor for a replaceable flow channel according to claim 2 or 3, wherein: the runner pipe (4) is provided with a capillary inlet (402) and a capillary outlet (403) which are communicated with the main runner, and the pipe seat (3) is provided with a pipe seat capillary inlet (302) and a pipe seat capillary outlet (304) which are respectively corresponding to the capillary inlet (402) and the capillary outlet (403).

5. The flow sensor of the replaceable flow channel of claim 4, wherein: and a pipe sealing groove (406) for installing a flow passage sealing ring (9) is circumferentially arranged on the outer side of the flow passage pipe (4).

6. The flow sensor of the replaceable flow channel of claim 4, wherein: the flow detection module (1) is provided with a sealing ring groove (101) corresponding to the tube seat capillary inlet (302) and the tube seat capillary outlet (304) respectively for installing a tube seat sealing ring (2); the flow detection module (1) is provided with a positioning column (102), and the tube seat (3) is provided with an outer positioning groove (303) which is matched with the positioning column (102).

7. A flow sensor of a replaceable flow channel according to claim 2 or 3 or 5 or 6, wherein: the pipe seat (3) is internally provided with a pipe seat main runner (307) for accommodating the runner pipe (4), and a matched positioning structure is arranged between the pipe seat main runner (307) and the runner pipe (4).

8. The replaceable flow channel flow sensor of claim 7, wherein: one end of the main pipe seat runner (307) is provided with a pipe seat inlet (301) for connecting with the inlet joint (10), and the other end is provided with a pipe seat outlet groove (305) communicated with the outlet joint (8).

9. The replaceable flow channel flow sensor of claim 8, wherein: a pipe plug (6) is arranged in the pipe seat outlet groove (305), and the outlet joint (8) is connected with the pipe seat (3) through the pipe plug (6).

10. The replaceable flow channel flow sensor of claim 9, wherein: a filter screen sealing gasket (5) is clamped between the pipe plug (6) and the end part of the pipe seat outlet groove (305), and the filter screen sealing gasket (5) is in abutting fit with the runner pipe (4).