CN112212934A

CN112212934A - Fluid metering device

Info

Publication number: CN112212934A
Application number: CN202011220771.3A
Authority: CN
Inventors: 苏苗候; 林尚喜; 曹高坡; 黄益昌; 陈永生; 高勤
Original assignee: TANCY INSTRUMENT GROUP CO Ltd
Current assignee: TANCY INSTRUMENT GROUP CO Ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-01-12

Abstract

The embodiment of the invention discloses a fluid metering device, relates to the technical field of flow detection, and can be suitable for fluid conveying pipelines in two flow directions. The device comprises a shell, wherein a first joint and a second joint which are communicated with the interior of the shell are arranged on the outer wall of the shell, a first group of mounting positions, a second group of mounting positions and a flowmeter assembly are arranged in the shell, a first group of matching parts are arranged on the flowmeter assembly, and the first group of matching parts can be respectively matched with the first group of mounting positions and the second group of mounting positions; the flowmeter assembly is arranged on the first group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the first joint; or the flowmeter assembly is arranged on the second group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the second joint. The invention is suitable for continuous or intermittent measurement of flow in a pipeline.

Description

Fluid metering device

Technical Field

The invention relates to the technical field of flow detection, in particular to a fluid metering device.

Background

The flowmeter is used for continuously or intermittently measuring the flow in a pipeline, the flow direction of the existing flowmeter is generally fixed in a one-way mode, the trend of a user pipeline is different, if the flow direction of the pipeline is opposite, the flowmeter needs to be reversely installed, however, due to the fact that the sizes of the front and the back of the flowmeter are different, the problems of interference and the like can occur during reverse installation, and the flowmeter cannot be reversely installed and used.

Disclosure of Invention

In view of this, embodiments of the present invention provide a fluid metering device, which is capable of adapting to fluid conveying pipelines with two flow directions.

The fluid metering device comprises a shell, wherein a first joint and a second joint which are communicated with the interior of the shell are arranged on the outer wall of the shell, and a first group of mounting positions and a second group of mounting positions are arranged in the shell; a flowmeter assembly is arranged in the shell, a first group of matching parts are arranged on the flowmeter assembly, and the first group of matching parts can be matched with the first group of mounting positions and the second group of mounting positions respectively; the flowmeter assembly is arranged on the first group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the first joint; or the flowmeter assembly is arranged on the second group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the second joint.

Optionally, a control valve assembly is further disposed in the housing, and the control valve assembly has a second group of matching portions, where the second group of matching portions can be respectively matched with the first group of mounting locations and the second group of mounting locations; when the flow meter assembly is arranged on the first group of mounting positions, the control valve assembly is arranged on the second group of mounting positions through the second group of matching parts, the inlet end of a control valve in the control valve assembly is communicated with the outlet end of a flow meter in the flow meter assembly, and the outlet end of the control valve in the control valve assembly is connected with the second joint; when the flow meter assembly is arranged on the second group of mounting positions, the control valve assembly is arranged on the first group of mounting positions through the second group of matching parts, the inlet end of a control valve in the control valve assembly is communicated with the outlet end of a flow meter in the flow meter assembly, and the outlet end of the control valve in the control valve assembly is connected with the first joint.

Optionally, the first set of mounting locations is disposed within the housing at a location near the first joint, and the second set of mounting locations is disposed within the housing at a location near the second joint; the first joint and the second joint are external thread joints and are symmetrically arranged at the upper end of the shell at intervals relative to the central axis of the shell; the first group of mounting positions and the second group of mounting positions are symmetrically arranged relative to a central axis of the shell.

Optionally, the first group of mounting positions and the second group of mounting positions respectively include at least two mounting posts with mounting holes, which are arranged on the inner wall of the housing, and each mounting post is a mounting position; the first group of matching parts comprise first group mounting holes which are arranged corresponding to at least two mounting columns of the first group of mounting positions, the second group of matching parts comprise second group mounting holes which are arranged corresponding to at least two mounting columns of the second group of mounting positions; at least one of the first group of mounting positions and the second group of mounting positions is a common mounting position.

Optionally, the first set of mounting locations and the second set of mounting locations respectively include at least one mounting post for mounting the flow meter assembly and at least one mounting post for mounting the control valve assembly; the height of the mounting post for mounting a control valve assembly is less than the height of the mounting post for mounting a flow meter assembly.

Optionally, the first set of mounting locations and the second set of mounting locations each include at least two mounting posts for mounting the flowmeter assembly; wherein at least one of said mounting posts for mounting a flow meter assembly is disposed proximate an upper end of said housing and at least one of said mounting posts for mounting a flow meter assembly is disposed proximate a lower end of said housing; the mounting posts for mounting a control valve assembly are disposed between at least two mounting posts for mounting a flow meter assembly.

Optionally, a first group of hoop mounting positions and a second group of hoop mounting positions are further arranged in the shell; the first group of hoop mounting positions comprise two mounting columns which are arranged at the lower end of the first joint and provided with mounting holes, and the two mounting columns are respectively arranged on two sides of the first joint; the second group of hoop installation positions comprises two installation columns which are arranged at the lower end of the second joint and provided with installation holes, and the two installation columns are arranged on two sides of the second joint respectively.

Optionally, the flow meter assembly includes a flow meter and a flow meter mounting bracket, the flow meter is disposed on the flow meter mounting bracket, and the first group of matching portions is disposed on the flow meter mounting bracket, wherein the flow meter is a roots meter or a turbine meter; the control valve assembly comprises a control valve and a control valve mounting frame, the control valve is arranged on the control valve mounting frame, and the second group of matching parts are arranged on the control valve mounting frame.

Optionally, the casing includes a casing body and a cover body covering the casing body, the first joint and the second joint are disposed on the casing body, and the flow meter assembly and the control valve assembly are disposed in the casing body; the cover body is provided with a first sensor mounting hole and a second sensor mounting hole; when the flowmeter assembly is installed on the first group of installation positions through the first group of matching parts, a flow sensor is installed in the first sensor installation hole, the flow sensor corresponds to a signaling disc of a flowmeter in the flowmeter assembly, and a pressure sensor is installed in the second sensor installation hole; when the flowmeter assembly is installed on the second group of installation positions through the first group of matching parts, a flow sensor is installed in the second sensor installation hole, the flow sensor corresponds to a signaling disc of a flowmeter in the flowmeter assembly, and a pressure sensor is installed in the first sensor installation hole.

Optionally, a sealing assembly is arranged between the cover body and the shell body, and a sealing cavity is formed between the cover body and the shell body; the outlet end of a flow meter in the flow meter assembly and the inlet end of a control valve in the control valve assembly are jointly opened in the sealing cavity.

Optionally, the cover body is connected with a controller, a clamping groove is formed in the cover body, a buckle is arranged on the controller, and the controller is clamped in the clamping groove through the buckle; the flow sensor, the pressure sensor and the control valve are respectively electrically connected with the controller.

Optionally, an inlet end of a flow meter in the flow meter assembly is connected to the first joint through a first pipeline, the first pipeline is a bent pipe, and an outlet end of a control valve in the control valve assembly is connected to the second joint through a second pipeline; or the inlet end of a flow meter in the flow meter assembly is connected with the second joint through a first pipeline, the first pipeline is a bent pipe, and the outlet end of a control valve in the control valve assembly is connected with the first joint through a second pipeline.

The fluid metering device comprises a shell, wherein a first joint and a second joint which are communicated with the interior of the shell are arranged on the outer wall of the shell, and a first group of mounting positions and a second group of mounting positions are arranged in the shell; a flowmeter assembly is arranged in the shell, a first group of matching parts are arranged on the flowmeter assembly, and the first group of matching parts can be matched with the first group of mounting positions and the second group of mounting positions respectively; the flowmeter assembly is arranged on the first group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the first joint; or the flowmeter assembly is arranged on the second group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the second joint. Thus, the flowmeter assembly and the two interfaces on the shell have two mounting modes, when the inlet end of the flowmeter assembly is connected with the first connector, the fluid metering device supports the fluid to flow into the first connector and flow out of the second connector; when the inlet end of the flow meter assembly is connected to the second junction, the fluid metering device supports fluid flow into the second junction and out of the first junction; like this, will when fluid metering device establishes ties on fluid conveying pipeline, only need according to fluid conveying pipeline's flow direction, reasonable setting the mounting means of two interfaces on flowmeter subassembly and the casing can, can adapt to the fluid conveying pipeline of two kinds of flow directions, and need not to install whole fluid metering device reverse to avoided because the fluid metering device front and back dimensions are different, caused the unable problem of reverse installation use of fluid metering device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of a first installation of a fluid metering device according to an embodiment of the present invention;

FIG. 2 is an exploded view of a second installation of a fluid metering device in accordance with an embodiment of the present invention;

FIG. 3 is a front view of a housing body in an embodiment of the invention;

FIG. 4 is an isometric view of a housing body in an embodiment of the invention;

FIG. 5 is a schematic structural view of a fluid metering device according to an embodiment of the present invention with a cover plate removed;

FIG. 6 is a schematic structural diagram of a cover plate of a fluid metering device according to an embodiment of the present invention;

fig. 7 is another exploded view of a first installation of a fluid metering device according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Description of the drawings:

1. a housing; 11. a housing body; 111. a first set of mounting locations; 112. a second set of mounting locations; 113. a first set of clamp mounting locations; 114. a second set of clip mounting locations; 12. a cover body; 121. a first sensor mounting hole; 122. a second sensor mounting hole; 13. a seal assembly; 2. a first joint; 3. a second joint; 4. a flow meter assembly; 41. a flowmeter mounting bracket; 411. a first set of mating portions; 42. a flow meter; 5. a control valve assembly; 51. a control valve mounting bracket; 511. a second set of mating portions; 52. a control valve; 6. a flow sensor; 7. a pressure sensor; 8. a control instrument; 9. a first pipeline; 10. a second pipeline.

The fluid metering device provided by the embodiment of the invention can adapt to fluid conveying pipelines with two flow directions.

As shown in fig. 1 and fig. 2, the fluid metering device provided in this embodiment includes a housing 1, a first joint 2 and a second joint 3 which communicate with the inside of the housing 1 are provided on an outer wall of the housing 1, and a first set of mounting locations 111 and a second set of mounting locations 112 are provided in the housing 1 (see fig. 3); a flow meter assembly 4 is arranged in the casing 1, and a first group of matching parts are arranged on the flow meter assembly 4 and can be respectively matched with the first group of mounting positions 111 and the second group of mounting positions 112; wherein the flowmeter assembly 4 is mounted on the first set of mounting positions 111 through the first set of matching parts, and the inlet end of the flowmeter assembly 4 is connected with the first joint 2; or the flowmeter assembly 4 is mounted on the second set of mounting positions 112 through the first set of matching parts, and the inlet end of the flowmeter assembly 4 is connected with the second connector 3.

In this embodiment, the flowmeter assembly is connected in series to a fluid transmission pipeline through the first joint and the second joint, and is used for measuring the flow passing through the flowmeter assembly; optionally, the flow meter assembly may comprise a roots meter or a turbine meter.

In the fluid metering device provided by the embodiment, two mounting manners are provided between the flow meter assembly and the two interfaces on the housing, and when the inlet end of the flow meter assembly is connected with the first joint, the fluid metering device supports the fluid to flow into the first joint and flow out of the second joint; when the inlet end of the flow meter assembly is connected to the second junction, the fluid metering device supports fluid flow into the second junction and out of the first junction; like this, will when fluid metering device establishes ties on fluid conveying pipeline, only need according to fluid conveying pipeline's flow direction, reasonable setting the mounting means of two interfaces on flowmeter subassembly and the casing can, can adapt to the fluid conveying pipeline of two kinds of flow directions, and need not to install whole fluid metering device reverse to avoided because the fluid metering device front and back dimensions are different, caused the unable problem of reverse installation use of fluid metering device.

As shown in fig. 1 and fig. 2, optionally, a control valve assembly 5 is further disposed in the housing 1, and the control valve assembly 5 has a second set of matching portions, which can be respectively matched with the first set of mounting positions 111 and the second set of mounting positions 112 (see fig. 3); when the flowmeter assembly 4 is installed on the first set of installation positions 111, the control valve assembly 5 is installed on the second set of installation positions 112 through the second set of matching parts, the inlet end of a control valve in the control valve assembly 5 is communicated with the outlet end of a flowmeter in the flowmeter assembly 4, and the outlet end of the control valve in the control valve assembly 5 is connected with the second connector 3; when the flowmeter assembly 4 is installed on the second set of installation positions 112, the control valve assembly 5 is installed on the first set of installation positions 111 through the second set of matching parts, the inlet end of the control valve in the control valve assembly 5 is communicated with the outlet end of the flowmeter in the flowmeter assembly 4, and the outlet end of the control valve in the control valve assembly 5 is connected with the first connector 2.

In this embodiment, the control valve in the control valve assembly is used to control the delivery of fluid, and when the user uses gas/water normally, the control valve is in an open state, and when the flow meter has abnormal conditions such as gas/liquid leakage or user defaulting, the control valve can be controlled to be closed immediately, so as to block the fluid from flowing out, and prohibit the user from using gas/water normally, and at this time, the flow meter assembly stops the flow metering due to the closed outlet.

The flowmeter assembly and the control valve assembly can be mounted on the first group of mounting positions/the second group of mounting positions, so that the flowmeter assembly and the control valve assembly can be exchanged and exchanged in mounting positions, two mounting modes in the shell are realized, and the flowmeter assembly and the control valve assembly are suitable for fluid conveying pipelines in two flow directions. In addition, the control valve component and the flowmeter component are arranged in the shell simultaneously, so that the behavior that a person who illegally steals gas through damaging the control valve can be prevented, and meanwhile, a structure integrating flow metering, control and installation is also created.

As shown in fig. 3, optionally, the first set of mounting locations 111 is disposed in the housing near the first connector 2, and the second set of mounting locations 112 is disposed in the housing near the second connector 3; the first joint 2 and the second joint 3 are external thread joints and are symmetrically arranged at the upper end of the shell 1 at intervals around the central axis of the shell 1; the first set of mounting locations 111 and the second set of mounting locations 112 are arranged symmetrically about a central axis of the housing.

In this embodiment, as shown in fig. 3, the first group of mounting positions 111 (mounting positions in the left dashed line box) and the second group of mounting positions 112 (mounting positions in the right dashed line box) may respectively include at least two mounting posts (see fig. 4) having mounting holes, each of which is disposed on the inner wall of the housing 1.

When the fluid metering module is used for metering gas, the arrangement form of the first joint and the second joint on the shell is the same as that of a gas inlet and a gas outlet of the existing diaphragm gas meter, and the first joint and the second joint can be directly in threaded connection with the existing gas conveying pipeline, so that the fluid metering device can be directly exchanged with the diaphragm gas meter without additionally adopting a special pipeline to be connected with the fluid conveying pipeline, and the installation efficiency is greatly improved; and the structure of threaded connection is adopted between the fluid metering device and the fluid conveying pipeline, and compared with the structure of flange connection adopted at present, the installation space can be reduced.

In addition, since the components (flow meter components or control valve components) mounted on the first set of mounting positions are always connected with the first connector, and the components (flow meter components or control valve components) mounted on the second set of mounting positions are always connected with the second connector, the first set of mounting positions are arranged at positions close to the first connector, and the second set of mounting positions are arranged at positions close to the second connector, so that the connection between the flow meter components and the control valve components and the interfaces can be facilitated, and the arrangement of the flow meter components and the control valve components in the shell is more compact and organized. And the first group of mounting positions and the second group of mounting positions are symmetrically arranged relative to the central axis of the shell, so that the position exchange between the flow meter assembly and the control valve assembly is more convenient.

As shown in fig. 5, optionally, the flow meter assembly 4 includes a flow meter 42 and a flow meter mounting bracket 41, the flow meter 42 is disposed on the flow meter mounting bracket 41, and the first set of matching parts 411 is disposed on the flow meter mounting bracket 41, wherein the flow meter 42 is a waist wheel flow meter or a turbine flow meter; the control valve assembly 5 includes a control valve 52 and a control valve mounting bracket 51, the control valve 52 is provided on the control valve mounting bracket 51, and the second group of fitting portions 511 (hidden by a fastener in fig. 5) are provided on the control valve mounting bracket 51.

This embodiment, the flowmeter subassembly not only includes roots flowmeter or turbine flowmeter, still includes the flowmeter mounting bracket, like this, can conveniently set up on the flowmeter mounting bracket first group cooperation portion, and can not influence the flow measurement work of flowmeter subassembly, make things convenient for the flowmeter subassembly to be in installation in the casing. Similarly, the control valve mounting frame in the control valve assembly has similar technical effects.

As shown in fig. 5, the first group of matching portions 411 includes a first group of mounting holes, which are disposed corresponding to at least two mounting posts of the first group of mounting locations 111, and the second group of matching portions 511 includes a second group of mounting holes (hidden by fasteners), which are disposed corresponding to at least two mounting posts of the second group of mounting locations 112; at least one of the first set of mounting locations 111 and the second set of mounting locations 112 is a common mounting location (the mounting locations in the left and right dashed boxes are the common mounting locations, see fig. 3).

In this embodiment, the flowmeter assembly may be fixed to the mounting post of the first set of mounting locations by fasteners passing through the first set of mounting holes, and the control valve assembly is connected to the second set of mounting locations in the same manner.

If the first set of mounting positions and the second set of mounting positions are separately arranged, each mounting position should at least be capable of mounting a next fluid meter assembly, and the volume occupied by the two mounting positions is at least equivalent to the volume of the two fluid meter assemblies; and when the first group of mounting positions and the second group of mounting positions share a common mounting position (equivalent to the overlapping of the areas occupied by the first group of mounting positions and the second group of mounting positions), when the flow meter assembly is mounted on one of the mounting positions, even if the flow meter assembly simultaneously occupies a part of the other mounting position, because the volume of the control valve assembly is generally smaller, the remaining space of the other mounting position is enough for mounting the control valve assembly, thus the whole space occupied by the two mounting positions can be reduced, the arrangement between the flow meter assembly and the control valve assembly is more compact, and the whole volume of the fluid metering module is further reduced.

As shown in fig. 2 and 3, optionally, the first set of mounting locations 111 and the second set of mounting locations 112 include at least one mounting post for mounting the flow meter assembly 4 and at least one mounting post for mounting the control valve assembly 5, respectively; the height of the mounting posts for mounting control valve assembly 5 is less than the height of the mounting posts for mounting flow meter assembly 4.

In this embodiment, when the flow meter module is mounted on the mounting post for mounting the flow meter module, since the flow meter module is thick, interference may occur between the mounting post for mounting the control valve module, and therefore, the height of the mounting post for mounting the control valve module is made smaller than the height of the mounting post for mounting the flow meter module 4, and such interference can be avoided as much as possible.

As shown in fig. 3 and 4, optionally, the first set of mounting locations 111 and the second set of mounting locations 112 each include at least two mounting posts for mounting the flow meter assembly 4; wherein at least one of the mounting posts for mounting flow meter assembly 4 is disposed proximate an upper end of the housing 1 and at least one of the mounting posts for mounting flow meter assembly 4 is disposed proximate a lower end of the housing 1; the mounting posts for mounting control valve assembly 5 are disposed between at least two mounting posts for mounting flow meter assembly 4 (see fig. 5).

In this embodiment, since the volume of the flow meter assembly is generally larger than that of the control valve assembly, when two sets of mounting positions are designed, for each set of mounting positions, the mounting posts for mounting the control valve assembly can be disposed between the mounting posts for mounting the flow meter assembly according to the method of this embodiment, so that, compared with a scheme in which the mounting posts for mounting the control valve assembly are disposed outside the mounting posts for mounting the flow meter assembly, the overall space occupied by each set of mounting positions can be saved, that is, when the control valve assembly and the flow meter assembly are respectively mounted on the two sets of mounting positions, the arrangement between the control valve assembly and the flow meter assembly is more compact.

As shown in fig. 1 and 2, optionally, the inlet end of the flow meter in the flow meter assembly 4 is connected to the first joint 2 through a first pipeline 9, the first pipeline 9 is a bent pipe, and the outlet end of the control valve in the control valve assembly 5 is connected to the second joint 3 through a second pipeline 10; or the inlet end of the flow meter in the flow meter assembly 4 is connected with the second joint 3 through a first pipeline 9, the first pipeline 9 is a bent pipe, and the outlet end of the control valve in the control valve assembly 5 is connected with the first joint 2 through a second pipeline 10.

In this embodiment, the first pipeline is an elbow pipe, which means that the overall flow direction of the fluid flowing in the first pipeline is changed; the first pipe may be an S-shaped bent pipe as shown in fig. 1 and 2, an L-shaped bent pipe, an arc-shaped bent pipe, or the like, or may be an inclined straight pipe connected between the first joint/second joint and the inlet end of the flowmeter assembly, and the flow direction of the fluid flowing from the first joint/second joint into the inclined straight pipe may be changed, and thus the inclined straight pipe may be regarded as the bent pipe.

The first pipeline adopts the return bend, can prevent to a certain extent that the illegal person of stealing gas/stealing water from the entrance of first joint/second connects stretches into the instrument and destroys the inside structure of flowmeter subassembly or influence the work of flowmeter subassembly to can play to the guard action of flowmeter subassembly and the emergence of the illegal action of stealing gas/stealing water of prevention etc..

Since the structure of the valve body part of the control valve assembly is not easy to damage compared with a precise flowmeter assembly, the second pipeline may be a straight pipe as shown in fig. 2, and of course, may also be a bent pipe, and may be specifically set according to actual needs.

As shown in fig. 3, optionally, a first set of clip mounting locations 113 and a second set of clip mounting locations 114 are further disposed in the housing 1; the first group of hoop mounting positions 113 comprise two mounting columns which are arranged at the lower end of the first joint 2 and provided with mounting holes, and the two mounting columns are respectively arranged at two sides of the first joint 2; the second set of clip mounting locations 114 includes two mounting posts with mounting holes disposed at the lower end of the second connector 3, and the two mounting posts are disposed at two sides of the second connector 3 respectively.

This embodiment, two sets of clamp installation positions can be used for connecting the clamp respectively, the clamp is used for fixing first pipeline or the second pipeline, thereby makes first pipeline with the installation of second pipeline is more firm.

As shown in fig. 1 and 6, optionally, the casing 1 includes a casing body 11 and a cover 12 covering the casing body 11, the first joint 2 and the second joint 3 are provided on the casing body 11, and the flow meter assembly 4 and the control valve assembly 5 are provided in the casing body 11; a first sensor mounting hole 121 and a second sensor mounting hole 122 are formed in the cover 12; when the flowmeter assembly 4 is mounted on the first set of mounting positions through the first set of matching parts, a flow sensor 6 is mounted in the first sensor mounting hole 121, the flow sensor 6 corresponds to a signal transmitting disc of a flowmeter in the flowmeter assembly 4, and a pressure sensor 7 is mounted in the second sensor mounting hole 122; when the flowmeter assembly 4 is mounted on the second set of mounting positions by the first set of engagement portions (see fig. 2), the flow sensor 6 is mounted in the second sensor mounting hole 122, the flow sensor 6 corresponds to a signal pad of a flowmeter in the flowmeter assembly 4, and the pressure sensor 7 is mounted in the first sensor mounting hole 121.

In this embodiment, the housing of the split design facilitates installation of the flow meter assembly and the control valve assembly within the housing; the pressure sensor is used for measuring the pressure in the shell; the flow meter assembly can include a waist wheel flow meter, the flow sensor is used for measuring flow in cooperation with a signaling disc in the waist wheel flow meter, and specifically, the flow sensor is used for sensing the number of revolutions of the waist wheel and converting the number of revolutions into an electrical signal, thereby realizing measurement of flow. The flow sensor may also be replaced by a temperature flow sensor, so that, in addition to being able to measure flow, the temperature within the housing can also be measured. Therefore, whether the transmission of the fluid is normal or whether the metering device works normally can be judged by utilizing the monitored pressure value and/or temperature value; or, according to the detected pressure value, performing pressure compensation on the measured flow value, and according to the detected temperature value, performing temperature compensation on the measured flow value.

The flow sensor and the pressure sensor are interchangeable such that the flow sensor can be selectively mounted in either the first sensor mounting hole or the second sensor mounting hole to cooperate with the flow meter assembly based on the mounting position of the flow meter assembly in the housing.

As shown in fig. 7, optionally, a sealing assembly 13 is disposed between the cover 12 and the housing body 11, and a sealed cavity is formed between the cover 12 and the housing body 11; the outlet end of the flow meter in the flow meter assembly 4 and the inlet end of the control valve in the control valve assembly 5 are jointly opened in the sealing cavity.

In this embodiment, the sealing assembly arranged between the cover body and the shell body ensures the sealing performance of the sealing inner cavity. Because the outlet end of the flow meter and the inlet end of the control valve are jointly opened in the sealed cavity of the shell, the outlet end of the flow meter and the inlet end of the control valve can be communicated with each other through the sealed cavity, so that the flow meter assembly and the control valve assembly can be communicated with each other without being connected (without direct connection or connection through a connecting piece), and flow transmission can be realized through the sealed cavity, so that the arrangement positions of the flow meter assembly and the control valve assembly can be more flexible than the direct connection or the connection through the connecting piece without extending and arranging along the same direction; therefore, the arrangement between the flow meter assembly and the control valve assembly is more compact, the volume of the whole fluid metering device is reduced, and the installation of the fluid metering device is convenient.

As shown in fig. 7, optionally, a controller 8 is connected to the cover 12, a slot is formed in the cover 12, a buckle is arranged on the controller 8, and the controller 8 is clamped in the slot through the buckle; the flow sensor 6, the pressure sensor 7 and the control valve are electrically connected to the controller 8.

In this embodiment, the flow sensor, the pressure sensor, and the control valve assembly may be electrically connected to the controller through terminals, respectively; the flow sensor and the pressure sensor transmit the measured flow and pressure values of the actual working conditions to the controller, and the controller is used for controlling the opening and closing of the control valve according to the pressure in the shell and/or the user defaulting condition and the like.

Optionally, when the pressure value measured by the pressure sensor is not within the normal range, the controller may further alarm; the controller can also display the arrearage condition, the balance, the pressure in the shell, the fluid usage amount and the like of the user.

As shown in fig. 1 and 2, alternatively, the flow meter assembly 4 may be vertically arranged in the casing 1, with the inlet end of the flow meter assembly 4 located at an upper portion of the flow meter assembly 4 and the outlet end of the flow meter assembly 4 located at a lower portion of the flow meter assembly 4.

In this embodiment, the flowmeter subassembly is installed perpendicularly (the mode of admitting air goes up into down and goes out) in the casing, and impurity because the dead weight can directly drop in flowmeter subassembly below to can not accumulate easily and cause the card table phenomenon in flowmeter subassembly's measurement intracavity.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A fluid metering device is characterized by comprising a shell, wherein a first joint and a second joint which are communicated with the interior of the shell are arranged on the outer wall of the shell, and a first group of mounting positions and a second group of mounting positions are arranged in the shell;

a flowmeter assembly is arranged in the shell, a first group of matching parts are arranged on the flowmeter assembly, and the first group of matching parts can be matched with the first group of mounting positions and the second group of mounting positions respectively;

wherein the content of the first and second substances,

the flowmeter assembly is arranged on the first group of mounting positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the first joint; or

The flowmeter assembly is installed on the second group of installation positions through the first group of matching parts, and the inlet end of the flowmeter assembly is connected with the second joint.

2. The fluid metering device of claim 1, wherein a control valve assembly is further disposed within the housing, the control valve assembly having a second set of engagement portions thereon, the second set of engagement portions being mateable with the first set of mounting locations and the second set of mounting locations, respectively;

when the flow meter assembly is arranged on the first group of mounting positions, the control valve assembly is arranged on the second group of mounting positions through the second group of matching parts, the inlet end of a control valve in the control valve assembly is communicated with the outlet end of a flow meter in the flow meter assembly, and the outlet end of the control valve in the control valve assembly is connected with the second joint;

when the flow meter assembly is arranged on the second group of mounting positions, the control valve assembly is arranged on the first group of mounting positions through the second group of matching parts, the inlet end of a control valve in the control valve assembly is communicated with the outlet end of a flow meter in the flow meter assembly, and the outlet end of the control valve in the control valve assembly is connected with the first joint.

3. The fluid metering device of claim 2, wherein the first set of mounting locations is disposed within the housing proximate the first junction and the second set of mounting locations is disposed within the housing proximate the second junction;

the first joint and the second joint are external thread joints and are symmetrically arranged at the upper end of the shell at intervals relative to the central axis of the shell;

the first group of mounting positions and the second group of mounting positions are symmetrically arranged relative to a central axis of the shell.

4. The fluid metering device of claim 2, wherein the first and second sets of mounting locations each comprise at least two mounting posts having mounting holes disposed on an inner wall of the housing, one mounting location for each mounting post;

the first group of matching parts comprise first group mounting holes which are arranged corresponding to at least two mounting columns of the first group of mounting positions, the second group of matching parts comprise second group mounting holes which are arranged corresponding to at least two mounting columns of the second group of mounting positions;

at least one of the first group of mounting positions and the second group of mounting positions is a common mounting position.

5. The fluid metering device of claim 4, wherein the first and second sets of mounting locations comprise at least one mounting post for mounting the flow meter assembly and at least one mounting post for mounting the control valve assembly, respectively;

the height of the mounting post for mounting a control valve assembly is less than the height of the mounting post for mounting a flow meter assembly.

6. The fluid metering device of claim 5, wherein the first and second sets of mounting locations each comprise at least two mounting posts for the mounting of a flow meter assembly;

wherein at least one of said mounting posts for mounting a flow meter assembly is disposed proximate an upper end of said housing and at least one of said mounting posts for mounting a flow meter assembly is disposed proximate a lower end of said housing;

the mounting posts for mounting a control valve assembly are disposed between at least two mounting posts for mounting a flow meter assembly.

7. The fluid metering device of claim 1, wherein a first set of yoke mounting locations and a second set of yoke mounting locations are further provided within the housing;

the first group of hoop mounting positions comprise two mounting columns which are arranged at the lower end of the first joint and provided with mounting holes, and the two mounting columns are respectively arranged on two sides of the first joint;

the second group of hoop installation positions comprises two installation columns which are arranged at the lower end of the second joint and provided with installation holes, and the two installation columns are arranged on two sides of the second joint respectively.

8. The fluid metering device of claim 2, wherein the flow meter assembly comprises a flow meter and a flow meter mount, the flow meter being disposed on the flow meter mount, the first set of engagement portions being disposed on the flow meter mount, wherein the flow meter is a roots meter or a turbine meter;

the control valve assembly comprises a control valve and a control valve mounting frame, the control valve is arranged on the control valve mounting frame, and the second group of matching parts are arranged on the control valve mounting frame.

9. The fluid metering device of claim 2, wherein the housing comprises a housing body and a cover body covering the housing body, the first and second fittings being provided on the housing body, the flow meter assembly and the control valve assembly being provided within the housing body;

the cover body is provided with a first sensor mounting hole and a second sensor mounting hole; wherein the content of the first and second substances,

when the flowmeter assembly is installed on the first group of installation positions through the first group of matching parts, a flow sensor is installed in the first sensor installation hole, the flow sensor corresponds to a signaling disc of a flowmeter in the flowmeter assembly, and a pressure sensor is installed in the second sensor installation hole;

when the flowmeter assembly is installed on the second group of installation positions through the first group of matching parts, a flow sensor is installed in the second sensor installation hole, the flow sensor corresponds to a signaling disc of a flowmeter in the flowmeter assembly, and a pressure sensor is installed in the first sensor installation hole.

10. The fluid metering device of claim 9, wherein a seal assembly is disposed between the cap and the housing body, forming a sealed cavity therebetween;

the outlet end of a flow meter in the flow meter assembly and the inlet end of a control valve in the control valve assembly are jointly opened in the sealing cavity.

11. The fluid metering device of claim 9, wherein the cover is connected with a controller, a slot is arranged on the cover, a buckle is arranged on the controller, and the controller is clamped in the slot through the buckle;

the flow sensor, the pressure sensor and the control valve are respectively electrically connected with the controller.

12. The fluid metering device of claim 2, wherein the inlet end of the flow meter assembly is connected to the first connector by a first conduit, the first conduit is an elbow, and the outlet end of the control valve assembly is connected to the second connector by a second conduit; or

The inlet end of a flow meter in the flow meter assembly is connected with the second joint through a first pipeline, the first pipeline is a bent pipe, and the outlet end of a control valve in the control valve assembly is connected with the first joint through a second pipeline.