CN114111952A - Gauge outfit connecting piece and flowmeter - Google Patents

Abstract

The invention provides a meter head connecting piece and a flowmeter, and relates to the technical field of metering instruments. Wherein, this gauge outfit connecting piece includes: the column body comprises a first end and a second end which are arranged oppositely, a wiring cavity penetrating through the first end and the second end is formed in the column body, the separating sheet is used for being arranged in the wiring cavity and is fixedly connected with the cavity wall of the wiring cavity through the peripheral wall of the separating sheet, the separating sheet is also used for separating the part of the wiring cavity communicated with the first end and the part of the wiring cavity communicated with the second end, a plurality of wiring through holes with preset distances are formed in the separating sheet, each wiring through hole is used for allowing a connecting line to penetrate, the part of the wiring cavity between the separating sheet and the first end is used for filling first sealant, and the first sealant is used for sealing the filled cavity. The flowmeter comprises the gauge head connecting piece. According to the meter head connecting piece and the flowmeter, the sealing performance is good after the first sealant is poured into the wiring cavity, and the explosion-proof performance of the flowmeter is good.

Description

Gauge outfit connecting piece and flowmeter

Technical Field

The invention relates to the technical field of metering instruments, in particular to a gauge outfit connecting piece and a flowmeter.

Background

The flowmeter is used for obtaining the instrument of fluidic flow, has included gauge outfit and flowmeter body, is equipped with circuit module in the gauge outfit, is equipped with the sensor in the flowmeter, connects through gauge outfit connecting piece between gauge outfit and the flowmeter body, is formed with in the gauge outfit connecting piece and walks the line chamber, and circuit module in the gauge outfit and this internal sensor of flowmeter are connected through passing many connecting wires of walking the line chamber.

The flowmeter is used for measuring combustible fluid and needs to be subjected to explosion-proof treatment, and therefore a wiring cavity in a meter head connecting piece is usually sealed by sealant. The existing meter head connecting piece is a cylinder with two through ends, a plurality of connecting cables are gathered into a bundle and penetrate through a wiring cavity, sealant is filled into the wiring cavity, and the meter head and the flowmeter body are separated through the sealant.

After sealant is filled in a wiring cavity of the existing meter head connecting piece, the sealing effect is poor, and the explosion-proof performance of the flowmeter is poor.

Disclosure of Invention

The invention aims to provide a meter head connecting piece and a flow meter, and aims to solve the problem that in the prior art, the sealing effect is poor after sealant is poured into a wiring cavity.

In one aspect, the present invention provides a gauge head connector, comprising: columnar body and spacer.

The column body is including relative first end and the second end that sets up, and this internal line chamber of walking that runs through first end and second end that is formed with of column, and the spacing block is used for locating the line intracavity, and through the perisporium of spacing block and the chamber wall fastening connection who walks the line chamber, and the spacing block still is used for separating the part of walking the first end of line chamber intercommunication and the part of intercommunication second end, is equipped with a plurality of intervals on the spacing block and has the line through-hole of presetting the distance, and every is walked the line through-hole and is used for supplying a connecting wire to pass.

The part of the wiring cavity between the separation plate and the first end is used for filling first sealant, and the first sealant is used for being bonded with the cavity wall of the cavity filled with the first sealant and the connecting line and sealing the cavity filled with the first sealant.

Optionally, the separating sheet is disposed at the opening of the routing cavity at the second end.

Optionally, a bonding surface increasing structure for increasing a bonding surface with the first sealant is arranged on the wall of the routing cavity.

Optionally, the bonding surface increasing structure includes one or more of an internal thread structure, a stripe structure, a reticulate pattern structure, a tooth-shaped structure, a boss structure, a protruding thorn structure, a protruding point structure, a groove structure and a pit structure.

Optionally, the routing through holes are distributed on the separating sheet at equal intervals.

Or the interval between two adjacent routing through holes is gradually increased from the center of the separating sheet to the edge of the separating sheet.

In another aspect, the present invention provides a flow meter, which includes a flow meter body, a meter head, a circuit board, a plurality of connecting wires, and the meter head connector.

The first end and the gauge outfit of the column body of gauge outfit connecting piece are connected, the second end and the flowmeter body fastening connection of the column body, the line chamber of the column body is communicated with the inner chamber of the gauge outfit through the opening of the column body at the first end, and the line chamber is communicated with the chamber of the flowmeter body through the opening of the column body at the second end.

The circuit board is arranged in a cavity limited by the separating sheet of the meter head connecting piece, the cavity wall of the wiring cavity and the inner wall of the meter head.

One end of each connecting line is fixedly connected with the circuit board, and the other end of each connecting line correspondingly penetrates through the wiring through holes in the separating sheets one to one and then is fixedly connected with the sensors.

The part of the wiring cavity between the separation plate and the first end is filled with first sealant, and the first sealant is adhered to the cavity wall of the cavity filled with the first sealant and the connecting line and seals the cavity filled with the first sealant.

Optionally, the outer wall of each connecting line is fixedly connected with the hole wall of the corresponding routing through hole through a second sealant.

Optionally, at least a portion of the circuit board is disposed in the routing cavity, and an end of each connection line is fastened to a portion of the circuit board located in the routing cavity.

Optionally, the cavity wall of the wiring cavity is provided with an inward convex first limit table, the part of the circuit board in the wiring cavity comprises a first section and a second section, the width of the first section is larger than that of the second section, the first section is connected with the end part of the second section and abutted against the first limit table, the second section is located between the partition sheet and the end surface of the first limit table, which is used for abutting against the first section, the first section and the second section are connected with the cavity wall of the wiring cavity through a first sealant, and the end part of each connecting line is connected with the second section in a fastening manner.

Optionally, the periphery wall of the columnar body is provided with a second limiting table protruding outwards, the second limiting table is used for being abutted to the outer wall of the gauge outfit, the periphery wall of the first end is provided with an annular first mounting groove, an elastic check ring is mounted in the first mounting groove and used for being abutted to the inner wall of the gauge outfit, the periphery wall of the columnar body between the first mounting groove and the second limiting table is provided with an annular second mounting groove, and a first sealing ring used for sealing the joint of the columnar body and the gauge outfit is arranged in the second mounting groove.

Optionally, the outer peripheral wall evagination of second end has the installation eaves, and the installation eaves passes through fastener and flowmeter body fastening connection, and the terminal surface of second end is equipped with annular third mounting groove, walks the opening in the third mounting groove, is equipped with the second sealing washer that is used for sealed column body and flowmeter body junction in the third mounting groove.

The meter head connecting piece comprises a columnar body and a separating sheet, wherein a plurality of wiring through holes with preset distances are formed in the separating sheet, each wiring through hole is used for allowing a connecting line to penetrate through, the separating sheet is arranged in a wiring cavity of the columnar body and separates the wiring cavities, the part, located between the separating sheet and the first end, of each wiring cavity is used for filling first sealant, and the first sealant is used for being bonded with the cavity wall of a cavity filled with the first sealant and the connecting line and sealing the cavity filled with the first sealant. Through the arrangement, when the meter head connecting piece is connected with the meter head and the flowmeter body, the connecting lines for connecting the circuit module and the sensor can keep a preset interval at the position of the partition piece, when the first sealant is filled in the wiring cavity, enough first sealant can be filled between two adjacent connecting lines at the position of the partition piece, so that each connecting line and the first sealant are fixed firmly and tightly and adhered, the sealing effect of the wiring cavity after the first sealant is filled is good, the condition that the connecting lines are left with gaps or the connecting lines move to generate gaps due to the fact that the adjacent two connecting lines cannot be filled with the first sealant due to close fitting or too small interval or the filled first sealant is too little and is adhered unstably can be avoided, and the filling of the first sealant after the partition piece is arranged is also more convenient.

Drawings

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

FIG. 1 is a schematic view of an embodiment of a header connector provided in accordance with the present invention as assembled with a circuit board, a connecting wire, and a first seal ring;

FIG. 2 is a schematic view of a structure of a spacer of an embodiment of a header attachment provided in the present invention;

FIG. 3 is a schematic view of another configuration of a spacer of an embodiment of a header attachment provided in the present invention;

fig. 4 is a schematic view of the assembly of a meter head connector with a meter head and a meter body in an embodiment of the flow meter provided by the invention.

Description of reference numerals:

100. a columnar body; 110. a first end; 120. a second end; 121. a third mounting groove; 130. a wiring cavity; 131. an internal thread structure; 132. a first limit table; 140. a first mounting groove; 150. a second mounting groove; 160. installing eaves; 170. a second limit table; 180. a locking groove; 181. locking the bolt; 200. a separator; 210. routing through holes; 300. a circuit board; 310. a first stage; 320. a second stage; 400. a first sealant; 500. a connecting wire; 610. a first seal ring; 620. a second seal ring; 700. a gauge head; 800. a flowmeter body; 900. a circlip is provided.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; either mechanically or electrically, or both; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As described in the background art, there is no spacer having a predetermined distance between the connection lines in the conventional header connector, when the sealant is poured into the routing cavity of the header connector, the predetermined distance between the connection lines cannot be maintained, all the connection lines are often fixed in the routing cavity by the sealant in a bundle or in a scattered manner, the sealant poured into the connection lines is often unable to cover the connection lines at the position where the two connection lines are attached or have a small distance, a gap is left at the position where the sealant is not covered, which causes the sealing of the routing cavity after the sealant is poured into the connection lines, and the connection lines not covered by the sealant are not fixed firmly and are easy to move. Or even all the connecting wires are filled with sealant, but because the interval between each connecting wire can not be controlled, the sealant possibly filled between some connecting wires is less, the connecting wires on two sides of the connecting wires are not enough to be completely fixed, when the outer leakage part of the connecting wires moves, the part covered with the sealant also can move along with the connecting wires, the sealant in the wire cavity can generate a gap at the moment, sealing failure can also be caused, and when the sealing effect of the wire cavity of the meter head connecting piece is not good, the explosion-proof requirement of the flowmeter can not be met.

In order to solve the technical problem, the inventor sets a separating sheet for separating a wiring cavity in the wiring cavity of a columnar body of a meter head connecting piece, wherein the separating sheet is provided with a plurality of wiring through holes with preset distances at intervals, each wiring through hole is used for allowing a connecting line to pass through, the part of the wiring cavity between the separating sheet and the first end is used for filling first sealant, and the first sealant is used for being bonded with the cavity wall of a cavity filled with the first sealant and the connecting line and sealing the cavity filled with the first sealant. When the meter head connecting piece is used for connecting a meter head and a flowmeter body, connecting lines for connecting a circuit module and a sensor can keep a preset interval at a separating sheet, enough first sealant can be filled between two adjacent connecting lines at the separating sheet when the first sealant is filled in a wiring cavity, so that each connecting line and the first sealant are fixed firmly and bonded tightly, the sealing effect of the wiring cavity after the first sealant is filled is good, the situation that a gap is reserved between the connecting lines or the connecting lines move to generate the gap due to the fact that the adjacent connecting lines cannot be filled with the first sealant due to close contact or too small interval or the filled first sealant is too little to be bonded unstably can be avoided, and the filling of the first sealant after the separating sheet is arranged is also more convenient.

The meter head connector and the flow meter provided by the application are described in detail with reference to specific embodiments.

Fig. 1 is a schematic view of an embodiment of a provided header attachment when assembled with a circuit board, a connecting wire, and a first seal ring, fig. 2 is a schematic view of one structure of a spacer of the embodiment of the provided header attachment, and fig. 3 is a schematic view of another structure of the spacer of the embodiment of the provided header attachment.

As shown in fig. 1 to 3, the present embodiment provides a header connection member including a columnar body 100 and a spacer 200.

The column body 100 includes a first end 110 and a second end 120 which are oppositely arranged, a routing cavity 130 which penetrates through the first end 110 and the second end 120 is formed in the column body 100, the separating sheet 200 is used for being arranged in the routing cavity 130 and being fixedly connected with a cavity wall of the routing cavity 130 through a peripheral wall of the separating sheet 200, the separating sheet 200 is further used for separating a part of the routing cavity 130, which is communicated with the first end 110, from a part of the routing cavity which is communicated with the second end 120, a plurality of routing through holes 210 which are separated by a preset distance are formed in the separating sheet 200, and each routing through hole 210 is used for allowing one connecting wire 500 to pass through.

The portion of the routing cavity 130 between the separation plate 200 and the first end 110 is used for filling the first sealant 400, and the first sealant 400 is used for adhering to the cavity wall of the cavity filled with the first sealant 400 and the connection line 500 and sealing the cavity filled with the first sealant 400.

In the above embodiment, when the first sealant 400 is filled in the routing cavity 130, it can be ensured that enough first sealant 400 can be filled between two adjacent connecting lines 500 at the position of the separating sheet 200, so that each connecting line 500 and the first sealant 400 are firmly fixed and tightly adhered, the sealing effect of the routing cavity 130 after the first sealant 400 is filled is good, the situation that a gap is left between the connecting lines 500 or the connecting lines 500 move to generate a gap due to the fact that the two adjacent connecting lines 500 cannot be filled with the first sealant 400 due to close contact or too small space, or the filled first sealant 400 is too little and unstable in adhesion can be avoided, and it is more convenient to fill the first sealant 400 after the separating sheet 200 is arranged.

It can be understood that the preset distance between two adjacent routing through holes 210 can be determined according to the explosion-proof requirement, and the number of the routing through holes 210 can be determined according to the number of the connection lines 500 that need to be disposed in the routing cavity 130. The separator 200 can be fixed in the routing cavity 130 in advance; the separating sheet 200 can also be disposed independently from the columnar body 100, and is fixed in the routing cavity 130 by welding or bonding, etc. when in use.

In some possible embodiments, the separating sheet 200 is disposed at the opening of the routing cavity 130 at the second end 120.

So set up, can fill more first sealed glue 400 in walking the line chamber 130, first sealed glue 400 and connecting wire 500 and the fixed fastening of walking the chamber wall in line chamber 130 can improve the ability of bearing the impact force, flame proof performance is good, and reserves bigger space, do benefit to circuit board 300 and stretch into in walking the line chamber 130 and be connected with connecting wire 500 in walking the line chamber 130 from first end 110, connecting wire 500 does not stretch out from first end 110, need not set up spacer 200 again in first end 110 department.

In some possible embodiments, the wall of the trace cavity 130 is provided with an adhesion surface increasing structure for increasing the adhesion surface with the first sealant 400.

So set up, walk behind the interior first sealed glue 400 of filling of line chamber 130, the face that bonds increase structure can increase first sealed glue 400 and walk the chamber wall's of line chamber 130 face that bonds, and first sealed glue 400 is more firm with walking line chamber 130 bonding, can improve the ability of bearing the internal impact force, and flame proof performance is good.

In some examples, the bond surface increasing structure includes one or more of an internal thread structure 131, a stripe structure, a cross-hatched structure, a tooth structure, a boss structure, a spur structure, a bump structure, a groove structure, and a pit structure. Therefore, the bonding surface between the cavity wall of the moving cavity 130 and the first sealant 400 is increased.

For example, the boss structure may be a circular truncated cone, a triangular truncated cone, a trapezoidal truncated cone, or various irregularly shaped bosses.

It can be understood that the stripe structure, the cross-hatched structure, the convex structure, the concave structure or the concave structure may be arranged on the wall of the routing cavity 130 according to a certain rule, or may be arranged on the wall of the routing cavity 130 in a messy manner.

In some examples, the radial cross-section of the trace cavity 130 is circular.

So set up, walk behind the interior first sealed glue 400 of filling of line chamber 130, the faying face between the chamber wall of first sealed glue 400 and the line chamber 130 is big, and first sealed glue 400 is more firm with walking the bonding of line chamber 130, can improve the ability that bears the impact force, and flame proof performance is good.

In some possible embodiments, the bond surface increasing structure is an internal thread structure 131.

So set up, internal thread structure 131 can form through once the car silk, does benefit to the manufacturing.

It should be noted that the radial cross-section of the trace cavity 130 can also be square, triangular or other irregular shapes.

As shown in fig. 2, in some examples, the trace vias 210 are equally spaced on the separator sheet 200.

Thus, after the first sealant 400 is filled, the connecting wires 500 are uniformly bonded.

In some examples, all of the routing vias 210 are distributed in an array on the separator 200.

With such an arrangement, the utilization rate of the separating sheet 200 is high, and more routing through holes 210 can be arranged.

It is understood that the routing through holes 210 may be distributed in a matrix on the separator 200. The routing through holes 210 may also be distributed on the separator 200 in a circumferential array, the separator 200 may include a plurality of concentric circles, each circle is distributed with a plurality of routing through holes 210 in a circumferential array, the intervals between two adjacent circles may be equal or different, and the intervals between adjacent routing through holes 210 on different circles may be equal or different.

As shown in fig. 3, in some examples, the spacing between two adjacent routing through holes 210 gradually increases from the center of the separator 200 to the edge of the separator 200.

With such an arrangement, the possibility that the connection lines 500 separated by the separation sheet 200 overlap each other between the separation sheet 200 and the first end 110 due to the gravity of the separation sheet can be reduced before the first sealant 400 is filled, and the separation effect of the separation sheet 200 on the connection lines 500 is good.

For example, the separator 200 may include a plurality of concentric circles, each circle having a plurality of routing through holes 210 distributed in a circumferential array, the interval between the circles gradually increases from the center of the separator 200 to the edge of the separator 200, and the interval between two adjacent routing through holes 210 on the circumference outside the separator 200 is greater than the interval between two adjacent routing through holes 210 on the circumference inside the separator 200.

As shown in fig. 1, in some examples, the wall of the trace cavity 130 is provided with a first inwardly protruding limiting platform 132, the first limiting platform 132 is disposed between the separating sheet 200 and the first end 110, and the first limiting platform 132 is configured to abut against the circuit board 300 extending into the trace cavity 130 to limit the position of the circuit board 300 within the trace cavity 130.

In some examples, the first limit stop 132 is an annular stop. Therefore, the manufacturing is facilitated, and the circuit board 300 is convenient to abut against the first limiting table 132 at any angle.

In some examples, the bond surface increasing structure is provided on the cavity wall between the first stopper 132 and the separator 200. Thus, the structure for increasing the bonding surface does not affect the installation of the circuit board 300 between the first limiting table 132 and the first end 110.

In some examples, the cylindrical body 100 is cylindrical. Therefore, the columnar body 100 and the gauge head 700 can be connected in a rotating mode, and the angle of the connected gauge head 700 can be adjusted conveniently.

In other examples, the columnar body 100 is polygonal columnar.

In some examples, the outer wall of the cylindrical body 100 is provided with a convex second limit stop 170, the outer peripheral wall of the first end 110 is provided with an annular first mounting groove 140, the second limit stop 170 is used for abutting against the outer wall of the watch head 700, the first mounting groove 140 is used for mounting the circlip 900, and the circlip 900 is used for abutting against the inner wall of the watch head 700.

In some examples, the outer circumferential wall of the cylindrical body 100 is provided with a ring-shaped second installation groove 150, and the second installation groove 150 is used for installing the first sealing ring 610.

In some examples, an annular third mounting groove 121 is disposed on an end surface of the second end 120, an opening of the routing cavity 130 is within an inner ring of the third mounting groove 121, and the third mounting groove 121 is used for mounting the second sealing ring 620.

In some examples, the outer peripheral wall of the second end 120 is outwardly convex with a mounting ledge 160, and the mounting ledge 160 is configured to be fastened to the flowmeter body 800 by a fastener.

In some examples, the outer circumferential wall of the cylindrical body 100 is provided with an annular locking groove 180, and the locking groove 180 is located between the second mounting groove 150 and the second stopper 170. The locking groove 180 is adapted to cooperate with a locking bolt 181 inserted through an outer wall of the watch head 700 to restrict relative movement of the cylindrical body 100 and the watch head 700.

Fig. 4 is a schematic illustration of the assembly of the meter head connectors with the meter head and meter body in an embodiment of the flow meter provided. As shown in fig. 4 and referring to fig. 1 to 3, the flowmeter provided in this embodiment includes a flowmeter body 800, a meter head 700, a circuit board 300, a plurality of connection wires 500, and a meter head connector in any of the above embodiments.

The first end 110 of the columnar body 100 of the meter head connecting piece is connected with the meter head 700, the second end 120 of the columnar body 100 is fixedly connected with the flow meter body 800, the wiring cavity 130 of the columnar body 100 is communicated with the inner cavity of the meter head 700 through the opening of the first end 110, and the wiring cavity 130 is communicated with the cavity of the flow meter body 800, in which the sensor is arranged, through the opening of the second end 120.

The circuit board 300 is disposed in a cavity defined by the spacer 200 of the header connector, the walls of the trace cavity 130, and the inner wall of the header 700.

One end of each connecting line 500 is fastened to the circuit board 300, and the other end of each connecting line 500 is fastened to the sensor after passing through the routing through-holes 210 of the separating sheet 200.

The portion of the routing cavity 130 between the separation plate and the first end 110 is filled with a first sealant 400, and the first sealant 400 is adhered to the cavity wall of the cavity filled with the first sealant 400 and the connection line 500 and seals the cavity filled with the first sealant 400.

In the above embodiment, enough first sealant 400 is filled between two adjacent connecting lines 500 at the separating sheet 200, each connecting line 500 and the first sealant 400 are firmly fixed and tightly adhered, the sealing effect of the routing cavity 130 is good, the situation that a gap is left between the connecting lines 500 or the connecting lines 500 move to generate a gap due to the fact that the connecting lines 500 cannot be filled with the first sealant 400 due to close contact or too small distance or the filled first sealant 400 is too little and unstable in adhesion can be avoided, and the filling of the first sealant 400 is also more convenient.

It is understood that the column body 100 can be connected with the watch head 700 tightly, and also can be connected with the watch head 700 rotatably; the connection wires 500 may be securely connected to the circuit board 300 by soldering.

In some possible embodiments, the outer wall of each connection line 500 is fixedly connected to the hole wall of its corresponding routing through hole 210 by a second sealant.

Therefore, before the first sealant 400 is poured, the connection line 500 can be fixed in the routing through hole 210 of the separator 200 by the finer and finer second sealant, which is beneficial to pouring the first sealant 400 subsequently.

Of course, the connection line 500 may also be fixed in advance without using the second sealant, and the first sealant 400 is directly poured; or the first sealant 400 is directly used to fix the connection line 500 in advance.

In some possible embodiments, the circuit board 300 is at least partially disposed in the trace cavity 130, and an end of each connection line 500 is fixedly connected to a portion of the circuit board 300 located in the trace cavity 130.

Thus, the connection line 500 does not extend from the first end 110, the circuit board 300 only needs to be fixed at the first end 110, and the separation sheet 200 does not need to be disposed at the first end 110, so that the sealing effect of the routing cavity 130 can be ensured, and in addition, the space of the inner cavity of the meter head 700 can be saved.

In some possible embodiments, the cavity wall of the routing cavity 130 is provided with a first inward-protruding limiting table 132, a portion of the circuit board 300 in the routing cavity 130 includes a first section 310 and a second section 320, a width of the first section 310 is greater than a width of the second section 320, an end of the first section 310 connected to the second section 320 abuts against the first limiting table 132, the second section 320 is located between the end faces of the partition sheet 200 and the first limiting table 132, which are used for abutting against the first section 310, the first section 310 and the second section 320 are fastened and connected to the cavity wall of the routing cavity 130 through a first sealant 400, and an end of each connection line 500 is fastened and connected to the second section 320.

Therefore, the axial installation position of the circuit board 300 can be conveniently determined by the arranged first limiting table 132, the connecting line 500 is fixedly connected with the second section 320, the distance from the connecting line 500 in the wiring cavity 130 to the first end 110 is long, the part of the wiring cavity 130 close to the first end 110 is filled with more first sealant 400, and the part of the wiring cavity 130 close to the first end 110 is fixed firmly with the cavity walls of the circuit board 300 and the wiring cavity 130 and is tightly combined with the first sealant 400.

In some possible embodiments, the outer peripheral wall of the cylindrical body 100 is provided with a convex second limit stop 170, the second limit stop 170 is used for abutting against the outer wall of the watch head 700, the outer peripheral wall of the first end 110 is provided with an annular first mounting groove 140, a resilient collar 900 is mounted in the first mounting groove 140, and the resilient collar 900 is used for abutting against the inner wall of the watch head 700.

Thus, the column body 100 and the gauge head 700 are convenient to install and are beneficial to the rotation connection of the column body 100 and the gauge head 700.

In other examples, the cylindrical body 100 and the watch head 700 may be connected by an internal thread formed at the connection point of the external thread of the outer circumferential wall of the cylindrical body 100 and the watch head 700.

In the embodiment in which the columnar body 100 is connected to the gauge outfit 700 through the second stopper 170 and the elastic collar 900, the columnar body 100 is provided with an annular second mounting groove 150 on the outer peripheral wall between the first mounting groove 140 and the second stopper 170, and the second mounting groove 150 is provided with the first seal ring 610 for sealing the joint between the columnar body 100 and the gauge outfit 700.

Therefore, the sealing performance between the columnar body 100 and the meter head 700 can be improved, and the explosion-proof performance of the flowmeter is good.

In some examples, the cylindrical body 100 is cylindrical, and the cylindrical body 100 is rotatably connected to the gauge head 700 through the second stopping block 170 and the circlip 900. Thus, the angle of the gauge head 700 can be easily adjusted, and readings can be taken at various angles.

In some examples, the watch head 700 is provided with a cylindrical mounting seat communicated with an inner cavity thereof, an inner wall of the mounting seat is matched with an outer wall of a part between the second limit stop 170 and the first end 110 of the cylindrical body 100, and the mounting seat is sleeved outside a part between the first mounting groove 140 and the second limit stop 170 of the cylindrical body 100. Thus, the connection between the pillar-shaped body 100 and the watch head 700 is more stable.

In some examples, a through locking hole is formed in a peripheral wall of the mounting seat, the locking hole is a threaded hole, a locking bolt 181 is disposed in the locking hole, and an end of a screw of the locking bolt 181 is used for abutting against an outer wall of the columnar body 100 after passing through the locking hole so as to limit relative rotation between the gauge outfit 700 and the columnar body 100.

In some examples, the cylindrical body 100 is provided with an annular locking groove 180 at a position corresponding to the locking bolt 181, the width of the locking groove 180 is adapted to the width of the end of the screw of the locking bolt 181, the end of the screw of the locking bolt 181 is used for abutting against the groove bottom of the locking groove 180, and the locking bolt 181 embedded in the locking groove 180 is used for limiting the relative position of the watch head 700 and the cylindrical body 100 in the axial direction of the cylindrical body 100.

In some possible embodiments, the outer peripheral wall of the second end 120 protrudes outward to form a mounting ledge 160, and the mounting ledge 160 is fastened to the flowmeter body 800 by a fastener.

So set up, the column body 100 is connected with flowmeter body 800 conveniently.

It is understood that the fasteners may be fastening bolts, or may be rivets, pins, or other conventional fasteners.

In other examples, the second section 120 may be fixedly coupled to the flowmeter body 800 by bonding.

In some possible embodiments, the end surface of the second end 120 is provided with a third annular mounting groove 121, the opening of the routing cavity 130 is arranged in an inner ring of the third mounting groove 121, and a second sealing ring 620 for sealing the joint of the cylindrical body 100 and the flowmeter body 800 is arranged in the third mounting groove 121.

So set up, can improve the sealing performance between column body 100 and flowmeter body 800, the flame proof performance of flowmeter is good.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A meter head connecting piece is characterized by comprising a columnar body and a separating sheet;

the column body comprises a first end and a second end which are arranged oppositely, a wiring cavity penetrating through the first end and the second end is formed in the column body, the separating sheet is arranged in the wiring cavity and is fixedly connected with the cavity wall of the wiring cavity through the peripheral wall of the separating sheet, the separating sheet is also used for separating the part of the wiring cavity communicated with the first end from the part communicated with the second end, a plurality of wiring through holes with preset distances are formed in the separating sheet, and each wiring through hole is used for a connecting wire to pass through;

the part of the wiring cavity between the separation plate and the first end is used for filling first sealant, and the first sealant is used for bonding with the cavity wall of the cavity filled with the first sealant and the connecting line and sealing the cavity filled with the first sealant.

2. A header attachment according to claim 1, wherein said spacer is disposed at an opening of said trace cavity at said second end.

3. A gauge head connecting piece according to claim 1, wherein a bonding surface enlarging structure for enlarging a bonding surface with the first sealant is provided on a wall of the routing cavity.

4. A watch head connection according to claim 3, wherein the bonding surface increasing formation comprises one or more of an internal thread formation, a stripe formation, a cross-hatched formation, a tooth formation, a land formation, a barbed formation, a raised dot formation, a grooved formation and a pitted formation.

5. A header connector according to claim 1, wherein the trace through holes are equally spaced apart on the spacer;

or the interval between two adjacent routing through holes is gradually increased from the center of the separating sheet to the edge of the separating sheet.

6. A flowmeter comprising a flowmeter body, a meter head, a circuit board, a plurality of connecting wires, and a meter head connector according to any one of claims 1 to 5;

the first end of a columnar body of the meter head connecting piece is connected with the meter head, the second end of the columnar body is fixedly connected with the flowmeter body, a wiring cavity of the columnar body is communicated with an inner cavity of the meter head through an opening of the wiring cavity at the first end, and the wiring cavity is communicated with a cavity, in which a sensor is arranged, of the flowmeter body through an opening of the wiring cavity at the second end;

the circuit board is arranged in a cavity defined by the separating sheet of the meter head connecting piece, the cavity wall of the routing cavity and the inner wall of the meter head;

one end of each connecting line is fixedly connected with the circuit board, and the other end of each connecting line correspondingly penetrates through the wiring through holes on the separating sheets one by one and then is fixedly connected with the sensors;

the part of the wiring cavity between the separation plate and the first end is filled with first sealant, and the first sealant is adhered to the cavity wall of the cavity filled with the first sealant and the connecting line and seals the cavity filled with the first sealant.

7. The flowmeter of claim 6, wherein the outer wall of each connecting line is fixedly connected with the wall of the corresponding routing through hole by a second sealant.

8. The flowmeter of claim 6 wherein said circuit board is at least partially disposed within said routing cavity, and wherein an end of each of said connecting wires is securely attached to a portion of said circuit board within said routing cavity.

9. The flowmeter of claim 6, wherein the wall of the wiring cavity is provided with a first inwardly protruding limiting table, the portion of the circuit board in the wiring cavity comprises a first section and a second section, the width of the first section is greater than that of the second section, the first section is connected with the end of the second section and abutted against the first limiting table, the second section is located between the separating sheet and the end face of the first limiting table used for abutting against the first section, the first section and the second section are fixedly connected with the wall of the wiring cavity through the first sealant, and the end of each connecting line is fixedly connected with the second section.

10. The flowmeter of claim 6, wherein the outer peripheral wall of the columnar body is provided with a second convex limiting table, the second limiting table is used for abutting against the outer wall of the gauge outfit, the outer peripheral wall of the first end is provided with an annular first mounting groove, a circlip is mounted in the first mounting groove and is used for abutting against the inner wall of the gauge outfit, an annular second mounting groove is formed in the outer peripheral wall of the columnar body between the first mounting groove and the second limiting table, and a first sealing ring used for sealing the joint of the columnar body and the gauge outfit is arranged in the second mounting groove;

and/or, the periphery wall evagination of second end has the installation eaves, the installation eaves pass through the fastener with flowmeter body fastening connection, the terminal surface of second end is equipped with annular third mounting groove, it is in to walk the opening in line chamber the inner ring of third mounting groove, be equipped with in the third mounting groove and be used for sealing the column body with the second sealing washer of flowmeter body junction.

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