CN217003291U

CN217003291U - Valve and ultrasonic gas meter

Info

Publication number: CN217003291U
Application number: CN202123123962.0U
Authority: CN
Inventors: 杨国辉
Original assignee: Golden Card Intelligent Group Hangzhou Co ltd; Goldcard Smart Group Co Ltd
Current assignee: Golden Card Intelligent Group Hangzhou Co ltd; Goldcard Smart Group Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-07-19
Anticipated expiration: 2031-12-10

Abstract

The utility model belongs to the technical field of gas meters, and particularly relates to a valve and an ultrasonic gas meter. According to the valve provided by the embodiment of the utility model, when a medium enters the valve from the first air inlet, the medium is guided through the two adjacent flow channels and the flowing direction of the medium is changed, so that the flowing path of the medium is prolonged, enough buffer space is provided for the medium, the air flow is more stable, the metering is facilitated, and the problem of inaccurate metering of the metering module is solved.

Description

Valve and ultrasonic gas meter

Technical Field

The utility model belongs to the technical field of gas meters, and particularly relates to a valve and an ultrasonic gas meter.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

At present, the valve of ultrasonic wave gas table is adorned at the air inlet, because the space restriction of motor, the valve port is towards the inner wall of casing, and when the air current was admitted air by the air inlet via the valve, gas rushed to shells inner wall and bumps, formed anomalous air current, caused the inaccurate problem of measurement in reentrant supersound measurement module's the runner, and the flow of air current is big more, and the metering error is big more. The gas can cause the problem of air current disorder and atmospheric pressure loss owing to the abrupt change of valve inner structure when getting into the valve, causes the inaccurate problem of measurement in reentrant supersound measurement module's the runner, and the flow of air current is big more, and metering error is big more.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve the problem of inaccurate metering of the metering module in the prior art. The purpose is realized by the following technical scheme:

a first aspect of the utility model provides a valve comprising:

the valve comprises a valve frame, wherein a first air inlet, at least two flow channels and a first air outlet which are communicated with each other are arranged on the valve frame, the first air inlet, the at least two flow channels and the first air outlet are sequentially connected along the flowing direction of a medium, and an included angle is formed between the extending directions of two adjacent flow channels so as to change the flowing direction of the medium;

a valve body connected to the valve frame and configured to seal the first air outlet.

According to the valve provided by the embodiment of the utility model, when a medium enters the valve from the first air inlet, the medium is guided through the two adjacent flow channels and the flowing direction of the medium is changed, so that the flowing path of the medium is prolonged, enough buffer space is provided for the medium, the air flow is more stable, the metering is facilitated, and the problem of inaccurate metering of the metering module is solved.

In some embodiments of the utility model, the at least two flow channels comprise:

a first flow passage;

and the second flow channel is connected with the downstream of the first air inlet along the flowing direction of the medium, the second flow channel is connected with the downstream of the first flow channel, and a first included angle is formed between the extending direction of the first flow channel and the extending direction of the second flow channel.

In some embodiments of the utility model, the at least two flow channels further comprise:

and the second flow channel and the first air outlet are respectively connected with two ends of the third flow channel, and a second included angle is formed between the extending direction of the third flow channel and the extending direction of the second flow channel.

In some embodiments of the present invention, the valve frame further comprises a sealing member, and the second flow passage terminates in an opening structure, and the opening structure is in sealing connection with the sealing member.

In some embodiments of the utility model, the sealing element is sealingly connected to the opening arrangement by a sealing ring or by ultrasonic welding.

In some embodiments of the utility model, the valve further comprises a fairing disposed at the first gas outlet.

In some embodiments of the utility model, the fairing is integrally formed with the seal.

In some embodiments of the utility model, the first angle and the second angle are both right angles.

In some embodiments of the present invention, a flow guiding structure is disposed at a connection of two adjacent flow passages.

The utility model provides an ultrasonic gas meter, which comprises a valve, a shell and a metering module in any technical scheme, wherein a second gas inlet and a second gas outlet are formed in the shell, the first gas inlet is connected with the second gas inlet, the metering module is connected with the second gas outlet, a buffer cavity is formed between the valve and the metering module, and the first gas outlet faces the buffer cavity.

The ultrasonic gas meter and the valve have the same advantages, and the description is omitted.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic view of an internal structure of an ultrasonic gas meter according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a portion of the valve shown in FIG. 1;

FIG. 3 is an exploded view of the first embodiment of the valve shown in FIG. 1;

FIG. 4 is an exploded view of a second embodiment of the valve of FIG. 1;

fig. 5 is an exploded view of the third embodiment of the valve shown in fig. 1.

The reference symbols in the drawings denote the following:

100. an ultrasonic gas meter;

1. a housing; 11. a second air inlet; 12. a second air outlet; 13. a buffer chamber;

2. a valve; 21. a valve frame; 22. a valve body; 23. a seal ring; 211. a first air inlet; 212. a first flow passage; 213. a second flow passage; 214. a third flow passage; 215. a flow guide structure; 216. a seal member; 217. a fairing; 218. a screw; 219. a first air outlet; 221. a motor; 222. valve sealing;

3. a metering module.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 5, an ultrasonic gas meter 100 according to an embodiment of the present invention includes a valve 2, a housing 1, and a metering module 3, where the valve 2 includes a valve frame 21 and a valve body 22, the valve frame 21 is provided with a first gas inlet 211, at least two flow channels communicated with each other, and a first gas outlet 219, and along a flow direction of a medium, the first gas inlet 211, the at least two flow channels, and the first gas outlet 219 are sequentially connected, and an included angle is formed between extending directions of two adjacent flow channels to change the flow direction of the medium, and the valve body 22 is connected to the valve frame 21 and is configured to be capable of sealing the first gas outlet 219. When the medium enters the valve 2 from the first air inlet 211, the medium is guided through the two adjacent flow channels, the flowing direction of the medium is changed, the flowing path of the medium is prolonged, and a sufficient buffer space is provided for the medium, so that the air flow is more stable, the metering is facilitated, and the problem of inaccurate metering of a metering module is solved.

In the present embodiment, the medium is a gas, but in other embodiments, the medium may be other gases, such as oxygen and nitrogen, or may be a liquid.

In some embodiments of the present invention, as shown in fig. 1, a second air inlet 11 and a second air outlet 12 are formed on the housing 1, the first air inlet 211 is connected to the second air inlet 11, the metering module 3 is connected to the second air outlet 12, a buffer chamber 13 is formed between the valve 2 and the metering module 3, and the first air outlet 219 faces the buffer chamber 13. The gas enters the buffer cavity 13 through the second gas inlet 11, the first gas inlet 211 and the valve 2 in sequence, the first gas outlet 219 faces the buffer cavity 13, the buffer cavity 13 provides enough buffer space for the gas, the gas is fully buffered, the gas flow flows more stably, and then the gas flows into the metering module, so that the problem that the metering of the metering module is inaccurate due to instability of the gas flow is solved. When the user normally uses the gas, the valve 2 is in an open state, and the gas enters the shell 1 through the flow passage. When abnormal conditions such as gas leakage and arrearage occur, the valve 2 is closed immediately, so that gas is blocked from entering the shell 1 of the ultrasonic gas meter 100.

In some embodiments of the present invention, the larger the number of the flow channels, the more the medium is guided and the flow direction of the medium is changed to a certain extent, the flow path of the medium is extended, the gas flowing out from the first gas outlet 219 can be kept away from the inner wall of the housing 1, direct collision between the gas and the inner wall of the housing 1 is reduced, reduction of the gas flow rate due to collision is avoided, the gas is guided to rapidly enter the metering module, the gas flow compression effect is reduced, the gas flow is made to flow smoothly, and the pressure loss is reduced. In one embodiment, as shown in fig. 2, the at least two flow channels include a first flow channel 212 and a second flow channel 213, the first flow channel 212 is connected downstream of the first air inlet 211, the second flow channel 213 is connected downstream of the first flow channel 212, a first included angle is formed between the extending direction of the first flow channel 212 and the extending direction of the second flow channel 213, and the first air outlet 219 is far away from the inner wall of the housing 1 through the first flow channel 212 and the second flow channel 213, that is, is closer to the middle position of the housing 1.

In some embodiments of the present invention, as shown in fig. 2, the at least two flow channels further include a third flow channel 214, the second flow channel 213 and the first air outlet 219 are respectively connected to two ends of the third flow channel 214, and a second included angle is formed between an extending direction of the third flow channel 214 and an extending direction of the second flow channel 213. The second air inlet 11, the first air inlet 211, the first flow channel 212, the second flow channel 213, the third flow channel 214, the first air outlet 219, the buffer chamber 13, the metering module and the second air outlet 12 are arranged in sequence along the flowing direction of the medium, and the first air outlet 219 is further far away from the inner wall of the shell 1 through the third flow channel 214, that is, closer to the middle position of the shell 1

In some embodiments of the present invention, the first included angle may be an acute angle, a right angle, or an obtuse angle, in order to reduce the volume of the ultrasonic gas meter 100 as much as possible, the first included angle is set as a right angle, the first flow channel 212 and the second flow channel 213 form an "L" shaped flow channel, the second included angle may be an acute angle, a right angle, or an obtuse angle, in order to reduce the volume of the ultrasonic gas meter 100 as much as possible, the second included angle is set as a right angle, and the second flow channel 213 and the third flow channel 214 form an "L" shaped flow channel.

In some embodiments of the present invention, a flow guiding structure 215 is disposed at a junction of two adjacent flow passages. When the gas entered into valve 2 from first air inlet 211, through the junction of two adjacent runners, because the existence of water conservancy diversion structure 215, can reduce the direct collision between gas and the valve 2, avoid leading to the reduction of gas velocity of flow because of the collision, guide through the gas for the gas enters into metering module fast, reduces the air current compression effect, makes the air current steadily flow, has reduced the loss of pressure. Specifically, the flow guide structure 215 is arranged at the joint of the first flow passage 212 and the second flow passage 213, and when the gas passes through the joint of the first flow passage 212 and the second flow passage 213, the gas is guided by the flow guide structure 215, so that the gas flows smoothly, and the pressure loss is reduced. And the air pressure loss caused by the sharp change at the connection part of the first flow passage 212 and the second flow passage 213 can be eliminated by combining the flow guide structure 215.

In some embodiments of the present invention, as shown in fig. 2, the flow guiding structure 215 is a plane connecting the inner wall of the first flow channel 212 and the inner wall of the second flow channel 213, and the plane forms an included angle with the extending direction of the first flow channel 212 and the extending direction of the second flow channel 213, and the planar flow guiding structure 215 may set both the circumferential direction of the connection portion of the first flow channel 212 and the second flow channel 213 as the flow guiding structure 215, or may set only a partial area in the circumferential direction as the flow guiding structure 215. The flow guide structure 215 may also be an arc surface, and the arc surface is tangential to the inner wall of the first flow channel 212 and the inner wall of the second flow channel 213 at the same time, and a streamline design is adopted, so that the gas flows more stably, and the pressure loss is reduced.

In some embodiments of the present invention, a connection portion of the second flow channel 213 and the third flow channel 214 may also be provided with a flow guide structure 215, and a specific arrangement manner of the flow guide structure 215 is the same as that of the flow guide structure 215 between the first flow channel 212 and the second flow channel 213, which is not described herein again.

In some embodiments of the present invention, the valve frame 21 is formed by injection molding during the manufacturing process, and for the convenience of the manufacturing process, a part of the valve frame 21 is separately manufactured and finally assembled to form the valve frame 21. As shown in fig. 2 to 5, the end of the second flow channel 213 is configured as an open structure, and a sealing member 216 is separately processed, so as to finally connect the sealing member 216 to the open structure, but the sealing connection between the open structure and the sealing member 216 is ensured to ensure that the gas flows only in one direction.

In some embodiments of the present invention, as shown in fig. 4, the sealing member 216 and the opening structure may be connected by a sealing ring 23, and the sealing member 216 is connected to the opening structure of the valve frame 21 by a screw 218, and is sealed by the sealing ring 23 to form a detachable connection. As shown in fig. 3, the seal 216 and the opening structure may also be joined by ultrasonic welding to form a non-removable connection.

In some embodiments of the utility model, as shown in fig. 5, the valve 2 further comprises a flow straightener 217, the flow straightener 217 being disposed at the first outlet port 219. Carry out the rectification to gas through fairing 217, can become the gas that the rule flows with the gas that irregularly flows for the gas that flows from first gas outlet 219 is difficult to be the dispersion form, and is more steady even, with the measurement accuracy that improves measurement module 3. In addition, fairing 217 is network structure, can also filter the gas that flows into in the cushion chamber 13, avoids pollutants such as dust or granule in the gas pipeline can directly strike metering module 3, causes metering module 3's damage.

In some embodiments of the present invention, the connection of the fairing 217 to the valve frame 21 may be a detachable connection using screws 218 to connect the fairing 217 to the valve frame 21 at the first outlet port 219. The fairing 217 and the valve frame 21 can also be joined by ultrasonic welding to form a non-removable connection.

In some embodiments of the present invention, a fairing 217 may also be provided at least one of the connection of the second flow channel 213 and the third flow channel 214, the first inlet port 211, and the inlet port of the metering module.

In some embodiments of the present invention, since the sealing member 216 needs to be separately machined, the fairing 217 may be integrally formed with the sealing member 216, as shown in fig. 5, to reduce the number of parts and assembly times.

In some embodiments of the present invention, as shown in fig. 2 to 5, the valve body 22 comprises a motor 221 and a valve seal 222, the motor 221 is connected to the valve frame 21 by a screw 218, and sealing is realized by means of a sealing ring 23, so as to form a detachable connection. The valve seal 222 is connected to the motor 221, the motor 221 is arranged to drive the valve seal 222 to seal the first air outlet 219, the motor 221 extends out, the valve seal 222 is in contact with the first air outlet 219 to achieve sealing fit, the motor 221 retracts, the valve seal 222 is separated from the first air outlet 219, and the fuel gas can flow to the metering module.

In some embodiments of the present invention, as shown in fig. 1, the projection of the valve 2 coincides with at least part of the projection of the metering module 3 along a direction perpendicular to the medium flowing out from the first air outlet 219, so that the gas flowing out of the valve 2 does not enter the metering module 3 immediately, but is sufficiently buffered in the buffer chamber 13 to improve the metering accuracy of the metering module 3.

The above description is only for the preferred 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 also 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 valve, comprising:

the valve frame is provided with a first air inlet, at least two flow channels and a first air outlet which are communicated with each other, the first air inlet, the at least two flow channels and the first air outlet are sequentially connected along the flowing direction of a medium, and an included angle is formed between the extending directions of two adjacent flow channels so as to change the flowing direction of the medium;

2. The valve of claim 1, wherein the at least two flow passages comprise:

a first flow passage;

3. The valve of claim 2, wherein the at least two flow passages further comprise:

4. The valve of claim 2, wherein the valve frame further comprises a sealing member, and the second flow passage terminates in an open structure, the open structure being sealingly connected to the sealing member.

5. Valve according to claim 4, wherein the sealing element is sealingly connected to the opening arrangement by a sealing ring or by ultrasonic welding.

6. The valve of claim 4, further comprising a fairing disposed at the first gas outlet.

7. The valve of claim 6, wherein the fairing is integrally formed with the seal.

8. The valve of claim 3, wherein the first angle and the second angle are both right angles.

9. The valve according to any one of claims 1-8, wherein a flow guiding structure is arranged at the connection of two adjacent flow passages.

10. An ultrasonic gas meter, characterized in that, the ultrasonic gas meter comprises the valve of any one of claims 1 to 9, a housing and a metering module, a second gas inlet and a second gas outlet are formed on the housing, the first gas inlet is connected with the second gas inlet, the metering module is connected with the second gas outlet, a buffer cavity is formed between the valve and the metering module, and the first gas outlet faces the buffer cavity.