Meter connector and flow meter

Abstract

The present invention provides a meter connector and a flowmeter, which relate to the technical field of metering instruments. The meter connector includes: a columnar body and a separator, the columnar body includes a first end and a second end that are arranged opposite to each other, a wiring cavity that passes through the first end and the second end is formed in the columnar body, the separator is used to be arranged in the wiring cavity, and is fastened to the cavity wall of the wiring cavity through the surrounding wall of the separator, and the separator is also used to separate the part of the wiring cavity connected to the first end and the part connected to the second end, and the separator is provided with a plurality of wiring through holes spaced at a preset distance, each wiring through hole is used for a connecting line to pass through, and the part of the wiring cavity between the separator and the first end is used to fill a first sealant, and the first sealant is used to seal the chamber filled with it. The flowmeter includes the above-mentioned meter connector. The meter connector and flowmeter provided by the present invention have good sealing performance after the first sealant is poured into the wiring cavity, and the flowmeter has good explosion-proof performance.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, in particular to a meter connector and a flow meter. Background Art

[0002] A flow meter is an instrument used to obtain the flow rate of a fluid, and includes a meter head and a flow meter body. A circuit module is provided in the meter head, and a sensor is provided in the flow meter. The meter head and the flow meter body are connected by a meter head connector, and a wiring cavity is formed in the meter head connector. The circuit module in the meter head and the sensor in the flow meter body are connected by multiple connecting wires passing through the wiring cavity.

[0003] The flowmeter used to measure flammable fluids needs to be flameproof. For this purpose, the wiring cavity in the meter connector is often sealed with sealant. The existing meter connector is a column with two ends through. After multiple connecting cables are bundled into a bundle and passed through the wiring cavity, sealant is poured into the wiring cavity to separate the meter and the flowmeter body.

[0004] After the sealant is poured into the wiring cavity of the existing meter head connector, the sealing effect is poor, resulting in poor explosion-proof performance of the flow meter. Summary of the invention

[0005] The present invention aims to provide a meter connector and a flow meter to solve the problem of poor sealing effect after injecting sealant into a wiring cavity in the prior art.

[0006] In one aspect, the present invention provides a meter connector, which includes a columnar body and a separator.

[0007] The columnar body includes a first end and a second end that are relatively arranged. A wiring cavity that passes through the first end and the second end is formed in the columnar body. The separator is used to be arranged in the wiring cavity and is fastened to the cavity wall of the wiring cavity through the surrounding wall of the separator. The separator is also used to separate the part of the wiring cavity connected to the first end and the part connected to the second end. The separator is provided with a plurality of wiring through holes spaced at preset distances, and each wiring through hole is used for a connecting line to pass through.

[0008] The portion of the wiring cavity between the partition plate and the first end is used to be filled with a first sealant, and the first sealant is used to bond with the cavity wall and the connecting wire of the cavity filled therein and seal the cavity filled with the first sealant.

[0009] Optionally, the separator is arranged at the opening of the wiring cavity at the second end.

[0010] Optionally, a bonding surface enlarging structure for enlarging the bonding surface with the first sealant is provided on the cavity wall of the wiring cavity.

[0011] Optionally, the bonding surface enlargement structure includes one or more of an internal thread structure, a stripe structure, a mesh structure, a toothed structure, a boss structure, a burr structure, a convex dot structure, a groove structure and a pit structure.

[0012] Optionally, the routing holes are evenly spaced on the separator.

[0013] Alternatively, the interval between two adjacent routing through holes gradually increases from the center of the separator to the edge of the separator.

[0014] On the other hand, the present invention provides a flow meter, including a flow meter body, a meter head, a circuit board, a plurality of connecting wires and the above-mentioned meter head connecting piece.

[0015] The first end of the columnar body of the meter connector is connected to the meter, the second end of the columnar body is tightly connected to the flow meter body, the wiring cavity of the columnar body is connected to the inner cavity of the meter via the opening at the first end, and the wiring cavity is connected to the chamber in the flow meter body where the sensor is arranged via the opening at the second end.

[0016] The circuit board is arranged in a cavity defined by a partition sheet of the meter connector, a cavity wall of the wiring cavity and an inner wall of the meter.

[0017] One end of each connecting line is firmly connected to the circuit board, and the other end of each connecting line passes through the wiring through hole on the separator sheet in a one-to-one correspondence and is firmly connected to the sensor.

[0018] The portion of the wiring cavity between the partition plate and the first end is filled with a first sealant, and the first sealant is bonded to the cavity wall and the connecting wire of the cavity filled by the first sealant and seals the cavity filled by the first sealant.

[0019] Optionally, the outer wall of each connecting line is fastened to the hole wall of its corresponding routing through hole by a second sealant.

[0020] Optionally, the circuit board is at least partially disposed in the wiring cavity, and the end of each connecting line is tightly connected to the portion of the circuit board located in the wiring cavity.

[0021] Optionally, the cavity wall of the routing cavity is provided with an inwardly convex first limit platform, the part of the circuit board in the routing cavity includes a first section and a second section, the width of the first section is greater than the width of the second section, the end of the first section connected to the second section abuts against the first limit platform, the second section is located between the separator and the end face of the first limit platform for abutting against the first section, the first section and the second section are fastened to the cavity wall of the routing cavity by a first sealant, and the end of each connecting line is fastened to the second section.

[0022] Optionally, the outer peripheral wall of the columnar body is provided with a protruding second limit platform, the second limit platform is used to abut against the outer wall of the meter head, the outer peripheral wall of the first end is provided with an annular first mounting groove, an elastic retaining ring is installed in the first mounting groove, the elastic retaining ring is used to abut against the inner wall of the meter head, and the columnar body is provided with an annular second mounting groove on the outer peripheral wall between the first mounting groove and the second limit platform, and the second mounting groove is provided with a first sealing ring for sealing the connection between the columnar body and the meter head.

[0023] Optionally, the outer peripheral wall of the second end has a mounting flange protruding outward, and the mounting flange is fastened to the flowmeter body by fasteners. The end face of the second end is provided with an annular third mounting groove, and the opening of the wiring cavity is within the inner ring of the third mounting groove. The third mounting groove is provided with a second sealing ring for sealing the connection between the columnar body and the flowmeter body.

[0024] The meter connector and flow meter provided by the present invention include a columnar body and a separator, the separator is provided with a plurality of wiring holes spaced at a preset distance, each wiring hole is used for a connecting line to pass through, the separator is arranged in the wiring cavity of the columnar body and divides the wiring cavity, the portion of the wiring cavity between the separator and the first end is used to fill with a first sealant, the first sealant is used to bond with the cavity wall and the connecting line of the cavity filled with it and seal the cavity filled with the first sealant. Through the above arrangement, when the meter head connector connects the meter head and the flow meter body, the connecting wires connecting the circuit module and the sensor can maintain a preset interval at the separator. When the first sealant is filled in the wiring cavity, it can be ensured that a sufficient amount of the first sealant can be filled between two adjacent connecting wires at the separator, so that each connecting wire and the first sealant are firmly fixed and tightly bonded. After filling the first sealant, the sealing effect of the wiring cavity is good, and it can be avoided that there is a gap between the connecting wires or a gap is caused by the movement of the connecting wires due to the fact that the first sealant cannot be filled in due to being too close or the spacing between the two adjacent connecting wires is too small, or the first sealant is filled in too little and the bonding is unstable. It is also more convenient to pour the first sealant after setting the separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a schematic diagram of an embodiment of a meter head connector provided by the present invention when assembled with a circuit board, a connecting wire and a first sealing ring;

[0027] Figure 2It is a schematic diagram of a structure of a separator of an embodiment of a meter header connector provided by the present invention;

[0028] Figure 3 is a schematic diagram of another structure of a separator of an embodiment of a meter header connector provided by the present invention;

[0029] Figure 4 It is a schematic diagram of the assembly of the meter head connector, the meter head and the flow meter body in an embodiment of the flow meter provided by the present invention.

[0030] Description of reference numerals:

[0031] 100, columnar body; 110, first end; 120, second end; 121, third mounting groove; 130, wiring cavity; 131, internal thread structure; 132, first limit platform; 140, first mounting groove; 150, second mounting groove; 160, mounting eaves; 170, second limit platform; 180, locking groove; 181, locking bolt; 200, separator; 210, wiring through hole; 300, circuit board; 310, first section; 320, second section; 400, first sealant; 500, connecting line; 610, first sealing ring; 620, second sealing ring; 700, meter head; 800, flow meter body; 900, elastic retaining ring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication between two elements; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] As described in the background technology, there is no separator for wiring holes spaced at a preset distance in the existing meter header connector. When sealant is poured into the wiring cavity of the meter header connector, it is impossible to keep the preset interval for each connecting wire. All the connecting wires are often bundled together or scattered and fixed in the wiring cavity by sealant. In the position where two connecting wires are close to each other or the interval is small, the poured sealant often cannot cover them, and gaps will be left in the places not covered by sealant, resulting in poor sealing of the wiring cavity after the sealant is poured, and the connecting wires in the places not covered by sealant are not firmly fixed and are easy to move. When the connecting wires move, the gaps will be further enlarged. In particular, when the leaked parts of multiple connecting wires in a bundle move around the bundle, an obvious passage will be generated in the center of the column, causing sealing failure. Or even if all the connecting wires are filled with sealant, since the intervals between the connecting wires cannot be controlled, there may be too little sealant filled between some connecting wires, which is not enough to completely fix the connecting wires on both sides. When the leaking part of the connecting wire moves, the part covered with sealant will also move with it. At this time, the sealant in the wiring cavity will have gaps, which will also cause sealing failure. When the sealing effect of the wiring cavity of the meter head connector is not good, it cannot meet the explosion-proof requirements of the flow meter.

[0038] In order to solve the above technical problems, the inventor of this case arranges a partition plate to divide the routing cavity in the routing cavity of the columnar body of the meter header connector. The partition plate is provided with a plurality of routing holes spaced at a preset distance, each routing hole is used for allowing a connecting line to pass through, and the portion of the routing cavity between the partition plate and the first end is used to be filled with a first sealant, and the first sealant is used to bond with the cavity wall and the connecting line of the cavity filled by it and seal the cavity filled with the first sealant. When the meter head connector connects the meter head and the flow meter body, the connecting wires connecting the circuit module and the sensor can maintain a preset interval at the separator. When the first sealant is filled in the wiring cavity, it can be ensured that a sufficient amount of the first sealant can be filled between two adjacent connecting wires at the separator, so that each connecting wire and the first sealant are firmly fixed and tightly bonded. After the first sealant is filled, the sealing effect of the wiring cavity is good, and it can be avoided that there is a gap between the connecting wires or the connecting wires move to create a gap due to the fact that the first sealant cannot be filled in due to being too close or the spacing between the two adjacent connecting wires is too small, or the first sealant is filled in too little and the bonding is unstable, and it is also more convenient to pour the first sealant after the separator is set.

[0039] The meter connector and flow meter provided in the present application are described in detail below in conjunction with specific embodiments.

[0040] Figure 1 is a schematic diagram of an embodiment of the provided meter head connector when assembled with a circuit board, a connecting wire and a first sealing ring. Figure 2 is a schematic diagram of a structure of a separator of an embodiment of a meter header connector provided. Figure 3It is a schematic diagram of another structure of a separator of an embodiment of a meter header connector provided.

[0041] like Figure 1-Figure 3 As shown, the meter header connector provided in this embodiment includes a columnar body 100 and a separator 200 .

[0042] The columnar body 100 includes a first end 110 and a second end 120 that are relatively arranged. A wiring cavity 130 that passes through the first end 110 and the second end 120 is formed in the columnar body 100. The separator 200 is used to be arranged in the wiring cavity 130 and is fastened to the cavity wall of the wiring cavity 130 through the surrounding wall of the separator 200. The separator 200 is also used to separate the part of the wiring cavity 130 connected to the first end 110 and the part connected to the second end 120. The separator 200 is provided with a plurality of wiring through holes 210 spaced at a preset distance, and each wiring through hole 210 is used to allow a connecting line 500 to pass through.

[0043] The portion of the wiring cavity 130 between the partition plate 200 and the first end 110 is used to be filled with the first sealant 400 . The first sealant 400 is used to bond with the cavity wall and the connecting wire 500 of the cavity filled therein and seal the cavity filled with the first sealant 400 .

[0044] In the above embodiment, when the first sealant 400 is filled in the wiring cavity 130, it can be ensured that enough first sealant 400 can be filled between two adjacent connecting lines 500 at the separator 200, so that each connecting line 500 is firmly fixed and tightly bonded to the first sealant 400. After filling the first sealant 400, the sealing effect of the wiring cavity 130 is good, and it can be avoided that there is a gap between the connecting lines 500 or the connecting lines 500 move to create a gap due to the fact that the first sealant 400 cannot be filled in between two adjacent connecting lines 500 due to being too close or the distance between them is too small, or the first sealant 400 filled in is too little and the bonding is unstable. In addition, it is more convenient to pour the first sealant 400 after setting the separator 200.

[0045] It is understandable that the preset distance between two adjacent wiring through holes 210 can be determined according to the flameproof requirements, and the number of wiring through holes 210 can be determined according to the number of connecting wires 500 that need to be arranged in the wiring cavity 130. The separator 200 can be pre-fixed in the wiring cavity 130; the separator 200 can also be set independently of the columnar body 100, and then fixed in the wiring cavity 130 by welding or bonding when in use.

[0046] In some possible implementations, the separator 200 is disposed at the opening of the wiring cavity 130 at the second end 120 .

[0047] With such arrangement, more first sealant 400 can be filled in the wiring cavity 130. The first sealant 400 is fixed and fastened to the connecting wire 500 and the cavity wall of the wiring cavity 130, which can improve the ability to withstand impact force, has good explosion-proof performance, and leaves a larger space, which is conducive to the circuit board 300 extending from the first end 110 into the wiring cavity 130 and connecting with the connecting wire 500 in the wiring cavity 130. The connecting wire 500 does not extend from the first end 110, and there is no need to set a separator 200 at the first end 110.

[0048] In some possible implementations, a bonding surface enlarging structure for enlarging the bonding surface with the first sealant 400 is provided on the cavity wall of the wiring cavity 130 .

[0049] With such arrangement, after the first sealant 400 is filled in the wiring cavity 130, the bonding surface enlargement structure can enlarge the bonding surface between the first sealant 400 and the cavity wall of the wiring cavity 130, so that the first sealant 400 and the wiring cavity 130 are more firmly bonded, which can improve the ability to withstand internal impact force and has good explosion-proof performance.

[0050] In some examples, the bonding surface enlargement structure includes one or more of an internal thread structure 131, a stripe structure, a mesh structure, a toothed structure, a boss structure, a thorn structure, a convex point structure, a groove structure, and a pit structure, so as to increase the bonding surface between the cavity wall of the cavity 130 and the first sealant 400.

[0051] For example, the boss structure may be a truncated cone, a triangular cone, a trapezoidal cone, or bosses of various irregular shapes.

[0052] It is understandable that the stripe structure, mesh structure, boss structure, convex point structure, groove structure or pit structure can be arranged on the cavity wall of the routing cavity 130 according to a certain rule, or can be arranged on the cavity wall of the routing cavity 130 in a disorderly manner.

[0053] In some examples, the radial cross-section of the wiring cavity 130 is circular.

[0054] With such arrangement, after the first sealant 400 is filled in the wiring cavity 130, the bonding surface between the first sealant 400 and the cavity wall of the wiring cavity 130 is large, the first sealant 400 and the wiring cavity 130 are more firmly bonded, the ability to withstand impact force can be improved, and the explosion-proof performance is good.

[0055] In some possible implementations, the bonding surface enlargement structure is an internal thread structure 131 .

[0056] With such arrangement, the internal thread structure 131 can be formed by threading once, which is convenient for manufacturing.

[0057] It should be noted that the radial cross-section of the wiring cavity 130 may also be a square, a triangle or other irregular shapes.

[0058] like Figure 2 As shown, in some examples, the routing vias 210 are distributed at equal intervals on the separator 200 .

[0059] In this way, after filling the first sealant 400 , the connection lines 500 are evenly bonded to each other.

[0060] In some examples, all routing vias 210 are distributed in an array on the separator 200 .

[0061] With such arrangement, the utilization rate of the separator 200 is high, and more wiring through holes 210 can be arranged.

[0062] It can be understood that the wiring through holes 210 can be distributed in a matrix on the separator 200. The wiring through holes 210 can also be distributed in a circular array on the separator 200. The separator 200 can include multiple concentric circles, and multiple wiring through holes 210 are distributed in a circular array on each circle. The intervals between two adjacent circles can be equal or unequal, and the intervals between adjacent wiring through holes 210 on different circles can be equal or unequal.

[0063] like Figure 3 As shown, in some examples, the interval between two adjacent routing vias 210 gradually increases from the center of the separator 200 to the edge of the separator 200 .

[0064] This arrangement can reduce the possibility that the connection lines 500 separated by the separator 200 will overlap between the separator 200 and the first end 110 due to their own gravity before filling the first sealant 400, and the separator 200 has a good separation effect on the connection lines 500.

[0065] For example, the separator 200 may include multiple concentric circles, each of which has multiple routing holes 210 distributed in a circular array, and the spacing between each circle gradually increases from the center of the separator 200 to the edge of the separator 200, and the spacing between two adjacent routing holes 210 on the circle outside the separator 200 is greater than the spacing between two adjacent routing holes 210 on the circle inside the separator 200.

[0066] like Figure 1 As shown, in some examples, the cavity wall of the routing cavity 130 is provided with an inwardly convex first limit platform 132, and the first limit platform 132 is arranged between the partition plate 200 and the first end 110. The first limit platform 132 is used to abut against the circuit board 300 extending into the routing cavity 130 to limit the position of the circuit board 300 in the routing cavity 130.

[0067] In some examples, the first limiting platform 132 is an annular platform, which is convenient for manufacturing and allows the circuit board 300 to abut against the first limiting platform 132 at any angle.

[0068] In some examples, the bonding surface enlargement structure is disposed on the cavity wall between the first limiting platform 132 and the separator 200. In this way, the bonding surface enlargement structure does not affect the installation of the circuit board 300 between the first limiting platform 132 and the first end 110.

[0069] In some examples, the columnar body 100 is cylindrical, so that the columnar body 100 and the meter head 700 can be rotatably connected and the angle of the meter head 700 can be adjusted after the connection.

[0070] In other examples, the columnar body 100 is in the shape of a polygonal column.

[0071] In some examples, the outer wall of the columnar body 100 is provided with a protruding second limit platform 170, and the outer peripheral wall of the first end 110 is provided with an annular first mounting groove 140, the second limit platform 170 is used to abut against the outer wall of the meter head 700, and the first mounting groove 140 is used to install an elastic retaining ring 900, and the elastic retaining ring 900 is used to abut against the inner wall of the meter head 700.

[0072] In some examples, an annular second installation groove 150 is provided on the outer peripheral wall of the columnar body 100 , and the second installation groove 150 is used to install the first sealing ring 610 .

[0073] In some examples, an annular third installation groove 121 is provided on the end surface of the second end 120 , the opening of the wiring cavity 130 is within the inner ring of the third installation groove 121 , and the third installation groove 121 is used to install the second sealing ring 620 .

[0074] In some examples, a mounting flange 160 is protruded outwardly from the outer peripheral wall of the second end 120 , and the mounting flange 160 is used for fastening and connecting with the flow meter body 800 through fasteners.

[0075] In some examples, an annular locking groove 180 is provided on the outer peripheral wall of the columnar body 100, and the locking groove 180 is located between the second mounting groove 150 and the second limiting platform 170. The locking groove 180 is used to cooperate with a locking bolt 181 that passes through the outer wall of the meter head 700 and is embedded therein to limit the relative movement of the columnar body 100 and the meter head 700.

[0076] Figure 4 FIG. 1 is a schematic diagram of the assembly of the meter head connector, the meter head and the flow meter body in the embodiment of the provided flow meter. Figure 4 As shown, and refer to Figure 1-Figure 3The flow meter provided in this embodiment includes a flow meter body 800, a meter head 700, a circuit board 300, a plurality of connecting wires 500 and a meter head connector in any of the above-mentioned embodiments.

[0077] The first end 110 of the columnar body 100 of the meter connector is connected to the meter 700, the second end 120 of the columnar body 100 is firmly connected to the flow meter body 800, the wiring cavity 130 of the columnar body 100 is connected to the inner cavity of the meter header 700 through its opening at the first end 110, and the wiring cavity 130 is connected to the chamber in the flow meter body 800 where a sensor is provided through its opening at the second end 120.

[0078] The circuit board 300 is disposed in a cavity defined by the partition sheet 200 of the meter connector, the cavity wall of the wiring cavity 130 and the inner wall of the meter connector 700 .

[0079] One end of each connecting wire 500 is firmly connected to the circuit board 300 , and the other end of each connecting wire 500 passes through the wiring through hole 210 on the separator 200 and is firmly connected to the sensor.

[0080] The portion of the wiring cavity 130 between the partition plate and the first end 110 is filled with the first sealant 400 . The first sealant 400 adheres to the cavity wall and the connecting wire 500 of the cavity filled by the first sealant 400 and seals the cavity filled by the first sealant 400 .

[0081] In the above embodiment, the first sealant 400 filled between two adjacent connecting lines 500 at the separator 200 is sufficient, each connecting line 500 is firmly fixed and tightly bonded to the first sealant 400, and the wiring cavity 130 has a good sealing effect. It can avoid the situation where two adjacent connecting lines 500 cannot be filled with the first sealant 400 due to being too close or the spacing is too small, or the filled first sealant 400 is too little and the bonding is unstable, resulting in a gap between the connecting lines 500 or the connecting lines 500 moving to create a gap. It is also more convenient to pour the first sealant 400.

[0082] It is understandable that the columnar body 100 can be fastened to the meter head 700 or rotatably connected to the meter head 700; the connecting wire 500 can be fastened to the circuit board 300 by soldering.

[0083] In some possible implementations, the outer wall of each connecting wire 500 is fastened to the hole wall of the corresponding routing through hole 210 by a second sealant.

[0084] In this way, before pouring the first sealant 400 , the connecting wire 500 can be fixed in the wiring through hole 210 of the separator 200 by the more delicate second sealant, which is beneficial to the subsequent pouring of the first sealant 400 .

[0085] Of course, the second sealant may not be used to pre-fix the connection line 500 , and the first sealant 400 may be directly injected; or the first sealant 400 may be directly used to pre-fix the connection line 500 .

[0086] In some possible implementations, the circuit board 300 is at least partially disposed in the wiring cavity 130 , and an end of each connecting line 500 is tightly connected to the portion of the circuit board 300 located in the wiring cavity 130 .

[0087] In this way, the connecting wire 500 does not extend from the first end 110. Only the circuit board 300 needs to be fixed at the first end 110. There is no need to set a partition plate 200 at the first end 110 to ensure the sealing effect of the wiring cavity 130. In addition, the space in the inner cavity of the meter head 700 can also be saved.

[0088] In some possible embodiments, the cavity wall of the routing cavity 130 is provided with an inwardly convex first limit platform 132, and the portion of the circuit board 300 in the routing cavity 130 includes a first section 310 and a second section 320, the width of the first section 310 is greater than the width of the second section 320, the first section 310 is connected to the end of the second section 320 and abuts against the first limit platform 132, the second section 320 is located between the separator 200 and the end surface of the first limit platform 132 for abutting against the first section 310, the first section 310 and the second section 320 are fastened to the cavity wall of the routing cavity 130 by the first sealant 400, and the end of each connecting line 500 is fastened to the second section 320.

[0089] In this way, the first limit platform 132 is set to facilitate determining the axial installation position of the circuit board 300, the connecting wires 500 are all tightly connected to the second section 320, the connecting wires 500 in the wiring cavity 130 are far away from the first end 110, the wiring cavity 130 is partially filled with more first sealant 400 near the first end 110, and the first sealant 400 in the portion of the wiring cavity 130 near the first end 110 is firmly fixed and tightly combined with the circuit board 300 and the cavity wall of the wiring cavity 130.

[0090] In some possible embodiments, the outer peripheral wall of the columnar body 100 is provided with a protruding second limit platform 170, and the second limit platform 170 is used to abut against the outer wall of the meter head 700. The outer peripheral wall of the first end 110 is provided with an annular first mounting groove 140, and an elastic retaining ring 900 is installed in the first mounting groove 140, and the elastic retaining ring 900 is used to abut against the inner wall of the meter head 700.

[0091] In this way, the columnar body 100 and the meter head 700 are easy to install, and the columnar body 100 and the meter head 700 are convenient to be rotatably connected.

[0092] In some other examples, the columnar body 100 and the gauge head 700 may also be connected via an external thread provided on the outer peripheral wall of the columnar body 100 and an internal thread at the connection point of the gauge head 700 .

[0093] In an embodiment in which the columnar body 100 and the meter head 700 are connected via a second limit platform 170 and an elastic retaining ring 900, an annular second mounting groove 150 is provided on the outer peripheral wall of the columnar body 100 between the first mounting groove 140 and the second limit platform 170, and a first sealing ring 610 for sealing the connection between the columnar body 100 and the meter head 700 is provided in the second mounting groove 150.

[0094] In this way, the sealing performance between the columnar body 100 and the meter head 700 can be improved, and the explosion-proof performance of the flow meter is good.

[0095] In some examples, the columnar body 100 is cylindrical, and the columnar body 100 is rotatably connected to the meter head 700 through the second limit platform 170 and the elastic retaining ring 900. In this way, it is convenient to adjust the angle of the meter head 700, and readings can be taken at various angles.

[0096] In some examples, the meter head 700 is provided with a columnar mounting seat connected to its inner cavity, the inner wall of the mounting seat is adapted to the outer wall of the portion between the second stop platform 170 and the first end 110 of the columnar body 100, and the mounting seat is sleeved outside the portion between the first mounting groove 140 and the second stop platform 170 of the columnar body 100. In this way, the connection between the columnar body 100 and the meter head 700 is more stable.

[0097] In some examples, a locking hole is provided on the peripheral wall of the mounting seat, and the locking hole is a threaded hole. A locking bolt 181 is arranged in the locking hole. The end of the screw of the locking bolt 181 is used to abut against the outer wall of the columnar body 100 after passing through the locking hole to limit the relative rotation of the meter head 700 and the columnar body 100.

[0098] In some examples, the columnar body 100 is provided with an annular locking groove 180 at a position corresponding to the locking bolt 181, and the width of the locking groove 180 is adapted to the width of the end of the screw of the locking bolt 181, and the end of the screw of the locking bolt 181 is used to abut against the bottom of the locking groove 180, and the locking bolt 181 embedded in the locking groove 180 is used to limit the relative position of the head 700 and the columnar body 100 in the axial direction of the columnar body 100.

[0099] In some possible implementations, a mounting flange 160 is protruded outwardly from the outer peripheral wall of the second end 120 , and the mounting flange 160 is fastened to the flow meter body 800 via fasteners.

[0100] With such arrangement, the columnar body 100 is conveniently connected to the flow meter body 800 .

[0101] It is understandable that the fastener may be a fastening bolt, or may be a common fastener such as a rivet or a pin.

[0102] In some other examples, the second section 120 may also be fastened to the flow meter body 800 by bonding.

[0103] In some possible embodiments, the end face of the second end 120 is provided with an annular third mounting groove 121, the opening of the wiring cavity 130 is within the inner ring of the third mounting groove 121, and the third mounting groove 121 is provided with a second sealing ring 620 for sealing the connection between the columnar body 100 and the flowmeter body 800.

[0104] Such an arrangement can improve the sealing performance between the columnar body 100 and the flow meter body 800, and the explosion-proof performance of the flow meter is good.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A meter connector, characterized in that: It includes a columnar body and a separator; The columnar body comprises a first end and a second end which are arranged opposite to each other, a wiring cavity which passes through the first end and the second end is formed in the columnar body, the separator is used to be arranged in the wiring cavity, and is fastened to the cavity wall of the wiring cavity through the peripheral wall of the separator, the separator is also used to separate the portion of the wiring cavity which is connected to the first end and the portion which is connected to the second end, and a plurality of wiring through holes which are spaced at a preset distance are provided on the separator, and each of the wiring through holes is used to allow a connecting line to pass through; The portion of the wiring cavity between the partition plate and the first end is used to be filled with a first sealant, and the first sealant is used to bond with the cavity wall of the cavity filled by the first sealant and the connecting wire and seal the cavity filled by the first sealant; The separator is arranged at the opening of the wiring cavity at the second end, so that the circuit board extends from the first end into the wiring cavity and is connected with the connecting wire in the wiring cavity; The cavity wall of the wiring cavity is provided with an inwardly convex first limit platform, the part of the circuit board in the wiring cavity includes a first section and a second section, the width of the first section is greater than the width of the second section, the end of the first section connected to the second section abuts against the first limit platform, the second section is located between the separator and the end surface of the first limit platform for abutting against the first section, the first section and the second section are fastened to the cavity wall of the wiring cavity by the first sealant, and the end of each of the connecting lines is fastened to the second section; The interval between two adjacent wiring through holes gradually increases from the center of the separator to the edge of the separator.

2. The meter head connector according to claim 1, characterized in that: A bonding surface enlarging structure for enlarging the bonding surface with the first sealant is provided on the cavity wall of the wiring cavity.

3. The meter head connector according to claim 2, characterized in that: The bonding surface enlargement structure includes one or more of an internal thread structure, a stripe structure, a mesh structure, a toothed structure, a boss structure, a burr structure, a convex dot structure, a groove structure and a pit structure.

4. A flow meter, characterized in that: It comprises a flow meter body, a meter head, a circuit board, a plurality of connecting wires and a meter head connecting piece as claimed in any one of claims 1 to 3; The first end of the columnar body of the meter head connector is connected to the meter head, the second end of the columnar body is tightly connected to the flow meter body, the wiring cavity of the columnar body is connected to the inner cavity of the meter head through its opening at the first end, and the wiring cavity is connected to the chamber in the flow meter body where the sensor is arranged through its opening at the second end; The circuit board is arranged in a cavity defined by a partition plate of the meter connector, a cavity wall of the wiring cavity and an inner wall of the meter connector; One end of each of the connecting wires is firmly connected to the circuit board, and the other end of each of the connecting wires passes through the wiring through hole on the separator and is firmly connected to the sensor. The portion of the wiring cavity between the partition plate and the first end is filled with a first sealant, and the first sealant is bonded to the cavity wall of the cavity filled by the first sealant and the connecting wire and seals the cavity filled by the first sealant.

5. The flow meter according to claim 4, characterized in that: The outer wall of each connecting line is fastened to the hole wall of the corresponding wiring through hole by a second sealant.

6. The flow meter according to claim 4, characterized in that The circuit board is at least partially disposed in the wiring cavity, and the end of each of the connecting wires is tightly connected to the portion of the circuit board located in the wiring cavity.

7. The flow meter according to claim 4, characterized in that: The cavity wall of the wiring cavity is provided with an inwardly convex first limit platform, the part of the circuit board in the wiring cavity includes a first section and a second section, the width of the first section is greater than the width of the second section, the end of the first section connected to the second section abuts against the first limit platform, the second section is located between the separator and the end face of the first limit platform for abutting against the first section, the first section and the second section are fastened to the cavity wall of the wiring cavity by the first sealant, and the end of each of the connecting lines is fastened to the second section.

8. The flow meter according to claim 4, characterized in that: The outer peripheral wall of the columnar body is provided with an outwardly convex second limit platform, and the second limit platform is used to abut against the outer wall of the meter head. The outer peripheral wall of the first end is provided with an annular first mounting groove, and an elastic retaining ring is installed in the first mounting groove, and the elastic retaining ring is used to abut against the inner wall of the meter head. The columnar body is provided with an annular second mounting groove on the outer peripheral wall between the first mounting groove and the second limit platform, and a first sealing ring for sealing the connection between the columnar body and the meter head is provided in the second mounting groove; And / or, the outer peripheral wall of the second end has a mounting flange protruding outward, and the mounting flange is fastened to the flow meter body by fasteners, the end face of the second end is provided with an annular third mounting groove, the opening of the wiring cavity is within the inner ring of the third mounting groove, and the third mounting groove is provided with a second sealing ring for sealing the connection between the columnar body and the flow meter body.

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