CN215491910U

CN215491910U - Metering assembly, ultrasonic water meter shell and heat meter shell

Info

Publication number: CN215491910U
Application number: CN202120354854.5U
Authority: CN
Inventors: 朱春冬; 王裕丹
Original assignee: Zhejiang Youlipu Metrology Technology Co ltd
Current assignee: Zhejiang Youlipu Metrology Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2022-01-11
Anticipated expiration: 2031-02-08

Abstract

The utility model belongs to the technical field of metering devices, and particularly relates to a metering assembly, an ultrasonic water meter shell and a heat meter shell. The metering component comprises a pipe section, a metering interface piece and a metering component, wherein the pipe section is provided with a first port, a second port and a metering cavity, and the metering interface piece is used as a first metering unit and a second metering unit and is welded on the side wall of the pipe section; the metering hole is an opening hole formed in the side wall of the pipe section or a reaming hole formed by reaming the pipe section. The metering assembly, the ultrasonic water meter shell and the heat meter shell have the advantages of firm structure, easiness in manufacturing, safety in use and the like.

Description

Metering assembly, ultrasonic water meter shell and heat meter shell

Technical Field

The utility model belongs to the technical field of metering devices, and particularly relates to a metering assembly, an ultrasonic water meter shell and a heat meter shell.

Background

The ultrasonic water meter is a novel water meter which further calculates the flow of outlet water by detecting the time difference generated by the change of the speed when an ultrasonic sound beam propagates in the downstream and the upstream in water and then analyzing and processing the flow to obtain the flow speed of the outlet water. The device has the characteristics of low initial flow velocity, wide range ratio, high measurement precision, stable work, no movable part inside, no flow blocking element and long service life. The water meter has excellent small flow detection capability, can solve the problems of a plurality of traditional water meters, is more suitable for water rate gradient charging, and is suitable for saving and reasonably utilizing water resources. In addition, the detection and measurement of the temperature are combined on the basis of the ultrasonic water meter, and the heat value can be obtained by using a calculation formula.

As an important type of metering device, ultrasonic water meters and heat meters have important applications in residential life and industrial production. However, the housings of the existing ultrasonic water meters and heat meters are mostly cast by copper alloy, and the safety problem exists in long-term use. Meanwhile, the structure is not reasonable enough, and the production and assembly cost is high.

Therefore, it is necessary to innovate a housing or a metering unit for a housing or the like of an ultrasonic water meter and a heat meter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a metering assembly, an ultrasonic water meter shell and a heat meter shell which are firm in structure, easy to manufacture and safe to use.

In order to achieve the purpose, the utility model adopts the scheme that:

a metering assembly comprises a pipe section, wherein a first port, a second port and a metering cavity extending from the first port to the second port are formed in the pipe section; a metering chamber is defined by the sidewall of the tube segment, and the first port communicates with the second port via the metering chamber.

The metering assembly further comprises a first metering unit and a second metering unit which are arranged along the extending direction of the metering cavity, the first metering unit and the second metering unit are respectively arranged on the side wall of the pipe section, and metering ports communicated with the metering cavity are formed in the first metering unit and the second metering unit.

The first metering unit and the second metering unit respectively comprise a metering interface piece, and the lower end of each metering interface piece is welded on the side wall of the pipe section; the pipe section is provided with a metering hole penetrating through the side wall of the pipe section so as to communicate the metering opening with the metering cavity.

The metering hole is an opening arranged on the side wall of the pipe section, and the opening is arranged along the side wall of the pipe section and penetrates through the side wall of the pipe section; or the metering hole is a reaming hole arranged on the side wall of the pipe section, and the reaming hole is formed by reaming the pipe section.

According to the above-mentioned metering assembly, the projected shape of the aperture is circular, elliptical or polygonal.

The metering assembly of any preceding claim, wherein the counterbore comprises a counterbore opening having a flat upper opening.

A metering assembly according to any preceding claim, wherein the aperture has a circular projected shape.

According to any one of the metering components, the outer edge of the opening is also provided with a positioning bearing platform, a metering bearing piece and a gap matched with the positioning bearing platform are arranged in the metering interface piece, and the positioning bearing platform is matched with the gap so that the metering bearing piece and the positioning bearing platform form the metering bearing platform together; or, a metering bearing piece is arranged in the metering interface piece to form a metering bearing table.

According to any one of the above metering assemblies, the counterbore is horizontally arranged, and the side wall of the counterbore is arranged in a manner of projecting downwards perpendicular to the plane where the counterbore is located.

According to any one of the above metering assemblies, the lower end of the metering interface piece is provided with a lower step, and the lower step is matched in the reaming opening.

According to any one of the above metering assemblies, the first metering unit and the second metering unit are arranged in sequence along the extension direction of the pipe section, and are preferably arranged vertically on the pipe section.

According to any one of the above metering assemblies, the lower end of the metering interface piece is also provided with a necking step.

According to any one of the above metering assemblies, the metering assembly further comprises a positioning piece arranged between the first metering unit and the second metering unit, the positioning piece comprises a positioning interface and a positioning hole, a positioning cavity is arranged in the positioning interface, and the positioning cavity is communicated with the metering cavity through the positioning hole.

An ultrasonic water meter shell comprises a pipe section, wherein a first port, a second port and a metering cavity extending from the first port to the second port are formed in the pipe section; the metering cavity is limited by the side wall of the pipe section, the first port is communicated with the second port through the metering cavity, and the first port and the second port are respectively provided with connecting threads.

The first metering unit and the second metering unit respectively comprise a metering interface piece, and the lower end of each metering interface piece is welded on the side wall of the pipe section; the pipe section is linear, and a metering hole penetrating through the side wall of the pipe section is formed in the pipe section so that the metering opening is communicated with the metering cavity.

The first metering unit and the second metering unit are arranged along the extension direction of the pipe section; the metering assembly further comprises a positioning piece arranged between the first metering unit and the second metering unit, the positioning piece comprises a positioning interface and a positioning hole, a positioning cavity is arranged in the positioning interface, and the positioning cavity is communicated with the metering cavity through the positioning hole.

The metering hole is an opening arranged on the side wall of the pipe section, and the opening is arranged along the side wall of the pipe section and penetrates through the side wall of the pipe section. Or the metering hole is a reaming hole arranged on the side wall of the pipe section, and the reaming hole is formed by reaming the pipe section.

According to the ultrasonic water meter shell, the counterbore comprises an counterbore hole with a flat upper opening; the reaming opening is horizontally arranged, and the side wall of the reaming is arranged in a mode of downward projection perpendicular to the plane of the reaming opening.

According to any one of the ultrasonic water meter shells, the lower end of the metering interface piece is provided with a lower step, and the lower step is matched in the reaming hole.

According to any one of the ultrasonic water meter shells, the lower end of the metering interface piece is also provided with a necking step.

According to any one of the ultrasonic water meter shells, the metering interface piece comprises an interface main body and an interface connecting piece, and the interface main body and the interface connecting piece are connected in a welding mode or are integrally formed.

According to any one of the above ultrasonic water meter shells, the projection shape of the opening is circular.

According to any ultrasonic water meter shell, the outer edge of the opening is also provided with a positioning bearing platform, a metering bearing piece and a gap matched with the positioning bearing platform are arranged in the metering interface piece, and the positioning bearing platform is matched with the gap so that the metering bearing piece and the positioning bearing platform form the metering bearing platform together; or, a metering bearing part is arranged in the metering interface part to form a metering bearing platform.

The ultrasonic water meter shell further comprises supporting legs arranged below the pipe sections; the shell further comprises a screw block; the shell further comprises a valve head, and the valve head comprises a ball valve arranged at one end of the pipe section.

A heat meter comprises a pipe section, wherein a first port, a second port and a metering cavity extending from the first port to the second port are arranged on the pipe section; the metering cavity is limited by the side wall of the pipe section, the first port is communicated with the second port through the metering cavity, and the first port and the second port are respectively provided with connecting threads.

The first metering unit and the second metering unit respectively comprise a metering interface piece, and the lower end of each metering interface piece is welded on the side wall of the pipe section; the pipe section is provided with a metering hole penetrating through the side wall of the pipe section so as to communicate the metering port with the metering cavity; the pipe section is in a linear shape, and a temperature detecting port is further arranged on the pipe section, so that the temperature detecting head can extend into the metering cavity through the temperature detecting port.

The first metering unit and the second metering unit are sequentially arranged along the extension direction of the pipe section; the metering assembly further comprises a positioning piece arranged between the first metering unit and the second metering unit, the positioning piece comprises a positioning interface and a positioning hole, a positioning cavity is arranged in the positioning interface, and the positioning cavity is communicated with the metering cavity through the positioning hole.

According to the heat meter housing described above, the counterbore includes an counterbore opening having a flat upper opening; the reaming opening is horizontally arranged, and the side wall of the reaming is arranged in a mode of downward projection perpendicular to the plane of the reaming opening.

According to any one of the heat meter housings, the lower end of the metering interface piece is provided with a lower step, and the lower step is matched in the reaming hole; the lower end of the metering interface piece is also provided with a necking step; the metering interface piece comprises an interface main body and an interface connecting piece (132), wherein the interface main body and the interface connecting piece are connected in a welding mode or are integrally formed.

According to any of the above heat meter housings, the projection shape of the opening is circular.

According to any one of the heat meter shells, the outer edge of the opening is also provided with a positioning bearing platform, a metering bearing piece and a gap matched with the positioning bearing platform are arranged in the metering interface piece, and the positioning bearing platform is matched with the gap so that the metering bearing piece and the positioning bearing platform form the metering bearing platform together; or, a metering bearing piece is arranged in the metering interface piece to form a metering bearing table.

The metering assembly, the ultrasonic water meter shell and the heat meter shell are all formed by processing in a mode of step-by-step processing and welding, compared with the traditional casting process, the material for each component can be selected more widely, and the requirements of each component on cost, structural strength, processing difficulty, use requirements and the like can be fully considered. Particularly, the first metering unit and the second metering unit which are used as the metering devices are connected to the side wall of the pipe section in a welding mode, and corresponding metering holes in the pipe section are formed in a hole opening or hole expanding mode, so that the difficult problems in the processing and assembling processes of parts can be well solved, and the whole or optional material range of the parts is wide.

The metering assembly, the ultrasonic water meter shell and the heat meter shell have the advantages of firm structure, easiness in manufacturing, safety in use and the like.

Drawings

Fig. 1 is a schematic perspective view of an ultrasonic water meter according to a first embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the embodiment of FIG. 1;

FIG. 4 is a schematic diagram of the construction of spool piece 100 in the embodiment of FIG. 1;

FIG. 5a is an exploded view of the metering interface 130 of the embodiment of FIG. 1; FIG. 5b is a schematic cross-sectional view of the interface connector 132 of the embodiment of FIG. 1;

fig. 6 is a schematic perspective exploded view of an ultrasonic water meter according to a second embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of the embodiment of FIG. 6;

FIG. 8a is a schematic diagram of the configuration of the metering interface 130 of the embodiment of FIG. 6;

FIG. 8b is a schematic diagram of the construction of spool piece 100 in the embodiment of FIG. 6;

fig. 9 is a schematic perspective exploded view of an ultrasonic water meter according to a third embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of the embodiment of FIG. 9;

fig. 11 is a schematic cross-sectional structure of the end sleeve in the embodiment of fig. 9.

Detailed Description

In order that those skilled in the art will better understand the utility model and thus more clearly define the scope of the utility model as claimed, it is described in detail below with respect to certain specific embodiments thereof. It should be noted that the following is only a few embodiments of the present invention, and the specific direct description of the related structures is only for the convenience of understanding the present invention, and the specific features do not of course directly limit the scope of the present invention. Such alterations and modifications as are made obvious by those skilled in the art and guided by the teachings herein are intended to be within the scope of the utility model as claimed.

A metering component can be applied to an ultrasonic water meter (also called an ultrasonic cold water meter) or a heat meter (also called an ultrasonic heat meter), and is matched with other related components to form a corresponding ultrasonic water meter or heat meter so as to meter water quantity or heat quantity.

The metering assembly comprises a pipe segment 100, the pipe segment 100 is provided with a first port 101, a second port 102 and a metering cavity 103 extending from the first port 101 to the second port 102, the metering cavity 103 is defined by the side wall of the pipe segment 100, the first port 101 and the second port 102 are communicated by the metering cavity 103 to form the pipe segment 100 with the metering cavity 103 penetrating through the pipe segment 100, and two

openings

101 and 102 are positioned at two ends of the pipe segment 100.

The metering assembly further comprises a first metering unit 121 and a second metering unit 122, the first metering unit 121 and the second metering unit 122 are respectively arranged on the side wall of the pipe section 100, and a metering opening 123 communicated with the metering cavity 103 is formed in the first metering unit 121 and the second metering unit 122, so that the metering cavity 103 is communicated with the outside, and therefore a metering device is allowed to at least partially extend into the metering cavity 103 from the metering opening 123 to be matched with the metering cavity 103, and the medium in the metering cavity 103 is metered. Although the above only describes a metering assembly with two

metering units

121, 122, it is also possible to increase the number of metering units without changing other structures in some application scenarios.

The above metering of the medium includes measurement of parameters such as flow speed, flow rate, mass, temperature, density, viscosity, etc. of the medium or similar physicochemical parameters, and also includes a metering process in which a calculation is performed on the basis of at least one of the physicochemical parameters to obtain other parameters, for example: by measuring the temperature and the flow, the corresponding heat quantity is calculated by using a calculation formula.

Of course, the metering assembly of the present invention mainly provides a basic assembly used for metering from various types of metering devices, and in practical application, different metering devices can be installed according to needs, so as to obtain a metering device or system with corresponding metering functions.

The first and

second metering units

121 and 122 are each mainly constituted by a metering interface 130, and the metering port 123 is provided through the metering interface 130. The lower end of the metering interface 130 fits onto the sidewall of the pipe segment 100 such that the metering interface 130 forms a unitary structure with the pipe segment 100; the corresponding position on the pipe segment 100 is provided with a metering hole penetrating through the side wall of the pipe segment 100, and the metering port 123 is communicated with the metering hole to form a through hole structure. The first metering unit 121 and the second metering unit 122 are respectively disposed along the extending direction of the metering cavity 103, and are spaced apart from each other by a suitable distance, so that the medium to be metered sequentially flows through the first metering unit 121 and the second metering unit 122.

The metering assembly is provided with a through metering cavity 103 defined by the side wall of the pipe section 103, and at least two metering ports 123 which are sequentially arranged on the side wall of the pipe section; the same or different metering devices are respectively arranged at the two metering ports 123, so that the purpose of metering the medium passing through the metering cavity can be achieved.

The specific configuration of the pipe segment 100 may have various forms, including, but not limited to, straight, curved, right-angled, acute, obtuse, and the like.

The relative position relationship between the first metering unit 121 and the second metering unit 122 with respect to the pipe segment 100 may also be in various forms, and the two may be arranged in a collinear manner, at an included angle, and the like, without limitation.

In some embodiments, the metering holes are openings 111 disposed in the sidewall of the pipe segment 100, the openings 111 being disposed along the sidewall of the pipe segment 100 and extending through the sidewall of the pipe segment 100. The projection shape of the opening 111 may be various shapes such as a circle, an ellipse, a polygon, etc., and the optimal projection shape is a circle.

In other embodiments, the metering hole is a counterbore 113 disposed in the sidewall of the spool piece 100, the counterbore 113 being formed by the spool piece 100 being counterbored.

In the present invention, the metering interface 130 may be an integrally formed structure or a separate structure, regardless of whether the opening 111 or the counterbore 113 is used as the metering hole.

In some embodiments, the metering assembly further comprises a valve head (not shown) comprising a ball valve disposed at one end of the pipe segment 100 for use with a smart water meter housing.

In other embodiments, the metering assembly further comprises a connecting thread 141, and the connecting thread 141 may be an internal or external thread, preferably the latter. The connecting threads 141 may be formed by directly machining the outer or inner wall of the two ends of the pipe segment 100, and the pipe segment 100 should have a corresponding wall thickness; or the thread can be formed by processing after welding the screw parts at the two ends of the pipe section 100, so that the requirement on the whole wall thickness of the pipe section 100 can be reduced; alternatively, the connection threads 141 are formed in advance and are connected to both ends of the pipe segment 100 by welding.

In other embodiments, the gauge assembly further comprises a threaded block 143, and the threaded block 143 is formed by cutting on the sidewall of the pipe segment 100 or by welding an additional threaded block 143 to the sidewall or end of the pipe segment 100 to facilitate the use of a wrench during joining.

In the preferred embodiment of the present invention, all components are made of stainless steel; for example, spool piece 100 is formed by drilling or reaming a stainless steel tube. In other alternatives, the housing may be made of copper alloy, other metal alloy, or non-metal alloy with sufficient structural strength, or a mixture thereof.

Example one

As shown in fig. 1-5b, an ultrasonic water meter housing is applicable to an ultrasonic water meter that meters water flow by the ultrasonic principle. The ultrasonic water meter is mainly used for measuring the consumption of cold water, so the ultrasonic water meter is called as an ultrasonic cold water meter and is also called as an ultrasonic water meter.

The ultrasonic water meter housing includes a spool piece 100, the spool piece 100 having a first port 101, a second port 102, and a metering chamber 103 extending from the first port 101 to the second port 102. The metering chamber 103 is defined by the side walls of the tubular segment 100, and the first port 101 communicates with the second port 102 via the metering chamber 103 to form the tubular segment 100 having the metering chamber 103 therethrough, with the

ports

101, 102 being located at opposite ends of the tubular segment 100. The pipe segment 100 is linear in shape.

The ultrasonic water meter shell further comprises a first metering unit 121 and a second metering unit 122, the first metering unit 121 and the second metering unit 122 are respectively arranged on the side wall of the pipe section 100, and a metering port 123 communicated with the metering cavity 103 is formed in the first metering unit 121 and the second metering unit 122, so that the metering cavity 103 is communicated with the outside, and a metering device (additionally arranged, not shown in the figure) is allowed to at least partially extend into the metering cavity 103 from the metering port 123 to be matched with the metering cavity 103, so that media in the metering cavity 103 can be metered.

The first and

second metering units

121 and 122 are each constituted by a metering interface 130, and the metering port 123 is provided through the metering interface 130. The lower end of the metering interface 130 is welded to a tight fit on the sidewall of the pipe segment 100 so that the metering interface 130 is formed as a unitary structure with the pipe segment 100; the lower end of the metering interface 130 has a shape corresponding to the metering hole, so that the metering interface 130 is tightly coupled to the sidewall of the pipe segment 100 after being fitted thereto. The corresponding position on the pipe segment 100 is provided with a metering hole penetrating through the side wall of the pipe segment 100, and the metering port 123 is communicated with the metering hole to form a through hole structure. The first metering unit 121 and the second metering unit 122 are respectively arranged along the extending direction of the metering cavity 103, and are arranged in a collinear manner and at a proper distance from each other, so that the medium to be metered sequentially flows through the first metering unit 121 and the second metering unit 122.

The ultrasonic water meter shell comprises a through metering cavity 103 defined by the side wall of a pipe section 103 and at least two metering ports 123 arranged on the side wall of the pipe section in sequence; the same or different metering devices are respectively arranged at the two metering ports 123, so that the purpose of metering the medium passing through the metering cavity can be achieved.

The metering hole is a counterbore 113 provided in the sidewall of the spool piece 100, the counterbore 113 being formed by the spool piece 100 being counterbore machined. The counterbore 113 has a flat upper surface to form a counterbore opening 114, the counterbore opening 114 preferably being horizontally disposed. The interface wall 130a of the counterbore 113 is arranged in downward projection perpendicular to the plane of the counterbore 114 to form the counterbore 113 with a circular cross-section.

The metering interface 130 is a split structure, and is composed of an interface main body 131 and an interface connector 132. Preferably, the upper portion of the interface body 131 is provided with an upper step 135 to allow the lower end of the interface connector 132 to be fitted into the upper step 135, so as to support the interface connector 132 and avoid fixing the interface connector 132 only by means of welding. Of course, it is also feasible and equivalent to provide a step structure at the lower end of the interface connector 132 and cooperate with the upper end of the interface main body 131 to perform the supporting function. It is also possible to use an integral molding for the metering interface 130.

For the embodiment using the counterbore 113 as the metering hole, since the sidewall of the pipe segment 100 will form the relatively protruded counterbore 113 after the counterbore process, when connecting the metering interface 130, the lower step 133 can be provided at the lower end of the metering interface 130, and by matching the lower step 133 with the counterbore 114, after the metering interface 130 is welded to the pipe segment 100, the lower step 133 and the counterbore 114 can be matched to play a supporting role, thereby avoiding the fracture of the welded part caused by the stress of the solder completely. Preferably, the lower end of the metering interface member 130 is also provided with a throat step 134 to form a step for support or sealing within the metering orifice 123.

The ultrasonic water meter shell further comprises a connecting thread 141 and a supporting leg 142, wherein the connecting thread 141 is an external thread arranged at two ends of the pipe section 100 and is welded to two ends of the pipe section 100 after being preset. The support feet 142 are welded to the underside of the pipe section 100 to allow the housing to rest smoothly.

Example two

As shown in fig. 6-8b, the housing of an ultrasonic (cold) water meter. The main structure of the ultrasonic water meter shell is the same as that of the first embodiment, except that the metering hole is replaced by a hole expansion 113 in the first embodiment and an opening 111 in the first embodiment; also, the configuration of the metering interface 130 may vary accordingly. In particular, the present invention relates to a method for producing,

in this embodiment, the metering hole is an opening 111 disposed in the sidewall of the pipe segment 100, and the opening 111 is disposed along the sidewall of the pipe segment 100 and penetrates the sidewall of the pipe segment 100. The projected shape of the opening 111 is circular and extends along the side wall of the tubular segment 100. Of course, it is also possible to set the projection shape of the opening 111 to be a polygonal shape such as an ellipse, a triangle, a quadrangle, a hexagon, and an octagon.

Further, in order to facilitate the connection and positioning of the lower end of the metering interface 130 and the pipe segment 100, a positioning bearing platform 112 is further arranged on the outer edge of the opening 111; the metering interface member 130 is provided with a metering bearing member 136 and a notch 137 matched with the positioning bearing platform 112, and the positioning bearing platform 112 is matched with the notch 137 so that the metering bearing member 136 and the positioning bearing platform 112 form a metering bearing platform which is arranged in the metering interface member 130 and is used for arranging a metering device. The above embodiments are embodiments in which the two components cooperate to form a metering carrier, and in fact, it is also feasible to provide a metering carrier 136 in the metering interface 130 to form a metering carrier alone, and the lower end of the metering interface 130 cooperates with the sidewall of the pipe segment 100 outside the opening 111 to achieve the purpose of welding and sealing connection.

For embodiments that employ the opening 111 as a metering orifice, since the opening 111 extends along the sidewall of the pipe segment 100, the projection of a circular pipe is circular, but the opening 111 itself does not generate any protruding structure. Thus, the lower end of the metering interface 130 needs to have a corresponding extension to match the outer surface of the side wall of the pipe segment 100 to enable a tight fit between the two after welding; i.e., forming a metering interface wall 130a disposed in downward projection of the metering interface member 130. And, the lower end of the metering interface 130 may have at least one portion larger than the opening 111, so that after the metering interface 130 is welded to the pipe segment 100, the lower end can support the side wall of the pipe segment 100 to support the lower end, thereby preventing the solder from being stressed to cause the welded joint to break.

Further, while the lower end of the metering interface 130 is shown as being integrally fitted to the sidewall of the tube segment 100 outside the opening 111, this need not be the case. In fact, the lower end of the metering interface 130 may be cut appropriately to produce a stepped structure that partially fits within the opening 111, but provides positioning and structural reinforcement that is positive for enhancing the horizontal force of the metering interface 130.

In this embodiment, the metering interface 130 is of an integrally formed construction.

The housing further includes a positioning element 140 disposed between the first metering unit 121 and the second metering unit 122, the positioning element 140 is composed of a positioning interface 124 and a positioning hole 115 disposed on the sidewall of the pipe segment 100, a positioning cavity 125 is disposed in the positioning interface 124, and the positioning cavity 124 is communicated with the metering cavity 103 through the positioning hole 115. Preferably, the positioning hole 115 is further provided with an annular step 116 to facilitate the connection of the positioning member 140 thereto.

EXAMPLE III

As shown in fig. 9-11, an ultrasonic (cold) water meter housing. The main structure of the ultrasonic water meter shell is the same as the two embodiments, and the difference is that: the housing also includes threaded studs 143 that are preformed with the connecting threads 141 and welded to the ends of the pipe segment 100.

Example four

An ultrasonic heat meter housing is used for measuring the heat value of a fluid by an ultrasonic principle.

The main structure of the ultrasonic heat meter housing is the same as that of the ultrasonic water meter housing described in the first, second, or third embodiment, except that the ultrasonic heat meter of this embodiment further has a temperature detection hole (not shown in the figure), and the temperature detection hole can be formed on the side wall of the pipe section 100 by opening a hole or reaming, so as to be applied as a housing of a heat meter for measuring flow rate and temperature and further calculating heat value.

Claims

1. A metering assembly comprising a spool piece (100), the spool piece (100) having a first port (101), a second port (102), and a metering chamber (103) extending from the first port (101) to the second port (102); the metering cavity (103) is defined by the side wall of the pipe segment (100), and the first port (101) is communicated with the second port (102) through the metering cavity (103); it is characterized in that the preparation method is characterized in that,

the metering assembly further comprises a first metering unit (121) and a second metering unit (122) which are arranged along the extending direction of the metering cavity (103), the first metering unit (121) and the second metering unit (122) are respectively arranged on the side wall of the pipe section (100), and metering ports (123) communicated with the metering cavity (103) are formed in the first metering unit (121) and the second metering unit (122);

the first metering unit (121) and the second metering unit (122) respectively comprise a metering interface piece (130), and the lower end of the metering interface piece (130) is welded on the side wall of the pipe section (100); the pipe section (100) is provided with a metering hole penetrating through the side wall of the pipe section (100) so as to enable the metering port (123) to be communicated with the metering cavity (103);

the metering hole is an opening hole (111) arranged on the side wall of the pipe section (100), and the opening hole (111) is arranged along the side wall of the pipe section (100) and penetrates through the side wall of the pipe section (100); or the metering hole is a reaming hole (113) arranged on the side wall of the pipe section (100), and the reaming hole (113) is formed by reaming the pipe section (100).

2. The metering assembly according to claim 1, wherein the projected shape of the aperture (111) is circular, elliptical or polygonal; or, the counterbore (113) comprises a counterbore opening (114) with a flat upper opening.

3. The metering assembly according to claim 2, wherein the aperture (111) has a projected shape of a circle;

the outer edge of the opening (111) is also provided with a positioning bearing platform (112), a metering bearing piece (136) and a notch (137) matched with the positioning bearing platform (112) are arranged in the metering interface piece (130), and the positioning bearing platform (112) is matched with the notch (137) so that the metering bearing piece (136) and the positioning bearing platform (112) form the metering bearing platform together; or a metering bearing piece (136) is arranged in the metering interface piece (130) to form a metering bearing table.

4. Metering assembly according to claim 2, characterized in that the reamer orifice (114) is arranged horizontally, the side wall of the reamer (113) being arranged in downward projection perpendicular to the plane of the reamer orifice (114).

5. The metering assembly according to any one of claims 1 to 4, wherein the metering interface (130) is provided with a lower step (133) at its lower end, the lower step (133) fitting within the reamer orifice (114).

6. The metering assembly according to any one of claims 1 to 4, wherein the first metering unit (121) and the second metering unit (122) are arranged one after the other in the extension direction of the pipe section; the lower end of the metering interface piece (130) is also provided with a necking step (134);

the metering assembly further comprises a positioning part (140) arranged between the first metering unit (121) and the second metering unit (122), the positioning part (140) comprises a positioning interface (124) and a positioning hole (115), a positioning cavity (125) is arranged in the positioning interface (124), and the positioning cavity (125) is communicated with the metering cavity (103) through the positioning hole (115).

7. An ultrasonic water meter shell comprises a pipe section (100), wherein a first port (101), a second port (102) and a metering cavity (103) extending from the first port (101) to the second port (102) are formed in the pipe section (100); the metering cavity (103) is defined by the side wall of the pipe section (100), the first port (101) and the second port (102) are communicated through the metering cavity (103), and the first port (101) and the second port (102) are respectively provided with a connecting thread (141); it is characterized in that the preparation method is characterized in that,

the ultrasonic water meter shell further comprises a first metering unit (121) and a second metering unit (122) which are arranged along the extending direction of the metering cavity (103), the first metering unit (121) and the second metering unit (122) are respectively arranged on the side wall of the pipe section (100), and metering ports (123) communicated with the metering cavity (103) are formed in the first metering unit (121) and the second metering unit (122);

the first metering unit (121) and the second metering unit (122) respectively comprise a metering interface piece (130), and the lower end of the metering interface piece (130) is welded on the side wall of the pipe section (100); the pipe section (100) is linear, and a metering hole penetrating through the side wall of the pipe section (100) is formed in the pipe section to enable the metering port (123) to be communicated with the metering cavity (103);

the first metering unit (121) and the second metering unit (122) are sequentially arranged along the extension direction of the pipe section (100); the ultrasonic water meter shell further comprises a positioning piece (140) arranged between the first metering unit (121) and the second metering unit (122), the positioning piece (140) comprises a positioning interface (124) and a positioning hole (115), a positioning cavity (125) is arranged in the positioning interface (124), and the positioning cavity (125) is communicated with the metering cavity (103) through the positioning hole (115);

8. The ultrasonic water meter housing according to claim 7, wherein the counterbore (113) comprises an counterbore hole (114) having a flat upper mouth; the reamer opening (114) is arranged horizontally, and the side wall of the reamer (113) is arranged in downward projection perpendicular to the plane of the reamer opening (114).

9. An ultrasonic water meter housing according to claim 8, characterized in that the metering interface piece (130) is provided with a lower step (133) at its lower end, the lower step (133) fitting into the flared opening (114); the lower end of the metering interface piece (130) is also provided with a necking step (134); the metering interface piece (130) comprises an interface main body (131) and an interface connecting piece (132), wherein the interface main body (131) and the interface connecting piece (132) are connected in a welding mode or are integrally formed.

10. An ultrasonic water meter housing according to claim 7, characterized in that the projected shape of the aperture (111) is circular;

11. An ultrasonic water meter housing according to any of claims 7-10, further comprising a support foot (142) arranged below the pipe section (100); the housing further comprises a screw block (143); the housing also includes a valve head including a ball valve disposed at one end of the tube segment (100).

12. A calorimeter shell comprises a pipe section (100), wherein a first port (101), a second port (102) and a metering cavity (103) extending from the first port (101) to the second port (102) are arranged on the pipe section (100); the metering cavity (103) is defined by the side wall of the pipe section (100), the first port (101) and the second port (102) are communicated through the metering cavity (103), and the first port (101) and the second port (102) are respectively provided with a connecting thread (141); it is characterized in that the preparation method is characterized in that,

the heat meter shell further comprises a first metering unit (121) and a second metering unit (122) which are arranged along the extending direction of the metering cavity (103), the first metering unit (121) and the second metering unit (122) are respectively arranged on the side wall of the pipe section (100), and metering ports (123) communicated with the metering cavity (103) are formed in the first metering unit (121) and the second metering unit (122);

the first metering unit (121) and the second metering unit (122) respectively comprise a metering interface piece (130), and the lower end of the metering interface piece (130) is welded on the side wall of the pipe section (100); the pipe section (100) is provided with a metering hole penetrating through the side wall of the pipe section (100) so as to enable the metering port (123) to be communicated with the metering cavity (103); the pipe section (100) is linear and is also provided with a temperature detecting port;

the first metering unit (121) and the second metering unit (122) are arranged along the extending direction of the pipe section (100); the heat meter shell further comprises a positioning piece (140) arranged between the first metering unit (121) and the second metering unit (122), the positioning piece (140) comprises a positioning interface (124) and a positioning hole (115), a positioning cavity (125) is arranged in the positioning interface (124), and the positioning cavity (125) is communicated with the metering cavity (103) through the positioning hole (115);

13. The heat meter housing of claim 12, wherein the counterbore (113) comprises an counterbore opening (114) having a flat upper opening; the reaming hole (114) is horizontally arranged, and the side wall of the reaming hole (113) is arranged in a downward projection mode according to a plane perpendicular to the reaming hole (114);

the lower end of the metering interface piece (130) is provided with a lower step (133), and the lower step (133) is matched in the orifice expanding hole (114); the lower end of the metering interface piece (130) is also provided with a necking step (134); the metering interface piece (130) comprises an interface main body (131) and an interface connecting piece (132), wherein the interface main body (131) and the interface connecting piece (132) are connected in a welding mode or are integrally formed.

14. A calorimeter casing according to claim 12, wherein the aperture (111) has a projected shape that is circular; the outer edge of the opening (111) is also provided with a positioning bearing platform (112), a metering bearing piece (136) and a notch (137) matched with the positioning bearing platform (112) are arranged in the metering interface piece (130), and the positioning bearing platform (112) is matched with the notch (137) so that the metering bearing piece (136) and the positioning bearing platform (112) form the metering bearing platform together; or a metering bearing piece (136) is arranged in the metering interface piece (130) to form a metering bearing table.