CN220067926U - Instrument circuit box with double-layer structure - Google Patents
Instrument circuit box with double-layer structure Download PDFInfo
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- CN220067926U CN220067926U CN202321424056.0U CN202321424056U CN220067926U CN 220067926 U CN220067926 U CN 220067926U CN 202321424056 U CN202321424056 U CN 202321424056U CN 220067926 U CN220067926 U CN 220067926U
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- double
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- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 18
- 210000004907 gland Anatomy 0.000 claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002355 dual-layer Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model belongs to the technical field of instruments and meter equipment, in particular relates to a meter circuit box with a double-layer structure, and aims to solve the problem that the structure of the traditional circuit box cannot meet four requirements. The utility model adopts the following steps: two inner and outer double-layer sleeved circular box body structures, namely, the outer instrument box bears the connection with the pipe body sleeve fixing rod; the inner instrument box is used for bearing circuit devices and batteries and sealing the circuit devices and the batteries; the inner and outer circuit box bodies and the connection between the inner and outer circuit box bodies and the pipe sleeve fixing rod are fixed by only one bolt; the inner side instrument box adopts a glass surface window and is fixed with the outer side circuit box through a gland and threads, so that the sealing of the instrument box and the connection between the instrument box and an instrument pipe body are successfully solved, four requirements of the metering and measuring industry on the functions of the instrument circuit box are met, and the expected target is achieved.
Description
Technical Field
The utility model belongs to the technical field of instruments and meter equipment, and particularly relates to a meter circuit box with a double-layer structure.
Background
In the era of big data of the internet of things, artificial intelligence and industrial automatic control, the electronic-mode instrument and meter is widely applied to the fields of industrial and public water, heat and gas supply metering and measurement, and the improvement of the safety protection level of the instrument circuit box is very important for the safety application of instruments and meters, and is an important component of the instruments and meters and has important significance for the technical improvement of the instrument circuit box.
In long-term practical application, the metering and measuring industry puts forth the following four requirements on the performance of a circuit box of an instrument and meter: the circuit box (one) should have a higher protection level: the circuit box is internally provided with electronic components for measurement or metering, and heat insulation and water resistance are important. In general, the sealing of the circuit box adopts a sealing ring, and the deformation of the shell is unfavorable for the sealing by the sealing ring, so that the deformation can be effectively overcome by adopting a circular shell.
The circuit box (II) is provided with shock resistance and ageing resistance: the shell is made of metal or a material with good weather resistance, is more suitable for outdoor and bad environments, and the visual surface of the instrument needs to be anti-aging, and is preferably made of glass.
And (III) the circuit box is not easy to disassemble at will: the accuracy of the measuring or metering instrument is calibrated, and other parts of the instrument box except the specified detachable lead seal, such as the joint with the instrument, need to be well positioned and sealed and cannot be disassembled arbitrarily.
And (IV) the circuit box is convenient for device maintenance and battery replacement: particularly, the battery can be conveniently maintained and replaced on site with complex industrial and mining.
The installation mode and the structural characteristics of the existing several instrument circuit boxes are as follows:
if the injection molding part is adopted, the circuit box is easy to deform, and the sealing with high protection level is difficult, which is contrary to the requirement (I); in addition, the connecting rod at the lower end of the instrument box and connected with the flowmeter also adopts a quadrilateral structure, so that the sealing is difficult, and the requirement (I) is contrary.
For example, the authorized bulletin number CN 307429060S provides a circuit box structure of the large-caliber ultrasonic water meter, the circular structure of the circuit box accords with the requirement (one), but the connecting rod at the lower end of the instrument box is connected with the water meter tube body by adopting a flange and a screw, so that the sealing is not easy, and the circuit box is also easy to disassemble at will, thus being contrary to the requirements (one) and (three).
The connecting rod at the lower end of the instrument box is connected with the connecting seat on the water meter tube body by adopting a positioning pin, which is contrary to the requirements (I) and (III).
In summary, according to the analysis of the current situation of the structure and the installation of a part of the existing instrument circuit box, the prior art has defects, and four requirements of the metering industry on the instrument circuit box cannot be fully met.
Disclosure of Invention
Aiming at the problems, the utility model provides a double-layer structure instrument circuit box, which has the technical scheme that: the utility model adopts a circular box structure with two inner and outer double-layer sleeves, namely, the outer instrument box bears the connection with the pipe sleeve fixing rod; the inner instrument box is used for bearing circuit devices and batteries and sealing the circuit devices and the batteries; the inner and outer circuit box bodies and the connection between the inner and outer circuit box bodies and the pipe sleeve fixing rod are fixed by only one bolt; the inner instrument box adopts a glass surface window and is fixed with the outer circuit box by a gland. The four requirements of the metering industry on the functions of the circuit box of the instrument and meter are met.
The utility model relates to an instrument circuit box with a double-layer structure, which comprises a pipe body sleeve, a fixed rod, a positioning cap, a first bolt, a second bolt, a gland, a first instrument box, a connecting rod, a second instrument box and a glass surface; the connecting rod at the lower part of the instrument box is sleeved with the outer side of the fixing rod at the middle part of the tube body sleeve, and the second rubber ring is sealed; the fixing rod is internally provided with a positioning cap for positioning and a rubber ring for sealing; the instrument box II is sleeved in the instrument box I and is pressed and fixed by the bolt II; the glass surface is positioned at the upper opening of the instrument box II and is pressed and fixed by matching the internal threads of the gland with the external threads of the instrument box I; the signal wire is electrically connected with the circuit board in the instrument box II through the middle hole of the positioning cap, so that the instrument circuit box with a double-layer structure is formed.
The connecting rod is sleeved with the outer side of the fixing rod in the middle of the pipe body sleeve, and the lower end of the connecting rod is provided with a positioning head which is in butt joint with a groove of the fixing rod in the middle of the pipe body sleeve for positioning.
The outer side of the positioning cap is provided with a third rubber ring and a fourth rubber ring which are in contact seal with the inner side of the fixed rod; the outer side of the positioning cap is provided with a rubber ring five and a rubber ring six which are in contact seal with the inner assembly of the pipe body sleeve.
The external thread of the first bolt is connected with the internal thread of the fixed rod, and is tightly pressed and fixed by the gasket to fix cap.
The instrument box II is sleeved in the instrument box I, and further, the instrument box I and the instrument box II are concentric, the bottom surfaces of the instrument box II are clung, and the positioning head II is positioned deep into the groove II in a matched manner.
The second bolt penetrates through the middle hole of the second instrument box, and further, the outer thread of the second bolt is in threaded connection with the inner thread of the fixing rod to be matched with the inner thread of the fixing rod, and the first rubber ring is located in the groove below the bottom surface of the second instrument box and above the fixing rod to be matched and sealed.
In addition, the glass surface is positioned on the positioning surface above the second instrument box, and the rubber ring seven is positioned in the third groove; further, the inner threads of the gland are matched with the outer threads of the first instrument box, the glass surface is pressed by the pressing surface, and the seven sealing of the rubber ring is extruded.
In summary, the performance of the instrument and meter circuit box can be improved by using the technical scheme, and the four requirements are met, compared with the prior art, the technical improvement implemented by the utility model has substantial and obvious progress, and the utility model is characterized in that:
first, possess higher protection level: (1) The round outer instrument box is sleeved outside the inner instrument box, so that the inner instrument box is effectively protected, is made of plastic, and can have a higher sealing effect through the cooperation of the sealing ring and glass; (2) The outer instrument box sleeve and the inner instrument box are provided with a space, and the outer instrument box is kept at a distance from the pipe body sleeve through the connecting rod, so that the inner instrument box can be isolated from the environment and the pipe body sleeve, the influence of the environment temperature or high and low temperature fluid flowing in the flowmeter on the circuit of the inner instrument box can be effectively reduced, and the protection circuit works normally. Second, possess impact resistance and ageing resistance: according to application requirements, the outer instrument box adopts an impact-resistant metal shell or an engineering plastic shell with high weather resistance; because the inner instrument box is of a circular structure, the glass surface is convenient to install, and the instrument box can adapt to outdoor and bad environments and is ageing-resistant.
Thirdly, difficult being disassembled at will: the connecting rod below the outer instrument box is sleeved with the outer side of the fixing rod in the middle of the tube sleeve, and the connecting rod and the fixing rod are fixed inside the inner instrument box through the second bolt, so that the outer instrument box cannot be disassembled from the connecting rod. Fourth, be convenient for maintain and change the battery: the gland is removed by releasing the lead seal between the gland and the outer instrument box, and the battery can be conveniently maintained and replaced by rotating and taking down the gland.
Description of the drawings:
FIG. 1 is a schematic view of the appearance of a two-layer meter circuit box connected to a flow meter;
FIG. 2 is a cross-sectional view of a dual-layer meter circuit box and flowmeter connection;
FIG. 3 is a schematic diagram of a two-layer instrument circuit box;
FIG. 4 is a schematic diagram of a two-layer instrument circuit box;
FIG. 5 is a schematic diagram II of a first embodiment of a dual-layer instrument circuit box;
fig. 6 is a schematic diagram of a connection of a meter box connection rod of a meter circuit box to a meter fixing rod.
In the figure:
11. a tube sleeve; 111. a flange A;112. a flange B;12. a fixed rod; 121. a rubber ring I; 122. a second rubber ring; 123. a first groove; 13. a screw; 14. positioning caps; 141. a rubber ring III; 142. a rubber ring IV; 143. a rubber ring V; 144. a rubber ring six; 15. a gasket; 16. a first bolt; 17. a second bolt; 22. a first lining pipe; 221. a deflector cap; 222. a first wiring pipe; 333. a signal line; 551. a wiring pipe II; 66. an instrument box I; 661. a lead sealing ring; 662. a connecting rod; 663. positioning a first head; 664. an external thread; 665. a second groove; 77. an instrument box II; 771. positioning heads II; 772. groove III; 773. a positioning surface; 774. fixing the first column; 7741. fixing the second column; 78. a rubber ring seven; 79. a glass surface; 80. a display screen; 81. a circuit board; 82. a battery; 88. a gland; 881. pressing the surface; 882. and (5) a via hole.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
Embodiment one:
the embodiment is a DN80 caliber correlation ultrasonic water meter instrument box.
As shown in fig. 1 and 2, a correlation ultrasonic water meter circuit box with DN80 caliber comprises a tube body sleeve 11, a fixed rod 12, a positioning cap 14, a first bolt 16, a second bolt 17, a gland 88, a first instrument box 66, a connecting rod 662, a second instrument box 77 and a glass surface 79; the connecting rod 662 under the instrument box I66 is sleeved with the outer side of the fixed rod 12 in the middle of the tube body sleeve 11, and the rubber ring II 122 is sealed; the inside of the fixed rod is provided with a positioning cap 14 for positioning and a rubber ring for sealing; the instrument box II 77 is sleeved in the instrument box I66, and the instrument box II and the instrument box I are pressed and fixed by the bolt II 17; the glass surface 79 is positioned at the upper opening of the instrument box II 77 and is pressed and fixed by matching the internal threads of the pressing cover 88 with the external threads 664 of the instrument box I66; the signal wire 333 is electrically connected with the circuit board 81 inside the second instrument box 77 through the hole in the positioning cap 14, so as to form an instrument circuit box with a double-layer structure.
As shown in fig. 6, the connecting rod 662 is sleeved with the outer side of the fixing rod 12 in the middle of the tube sleeve 11, and a positioning head 663 is arranged at the lower end of the connecting rod 662 to be in butt joint with and positioned with the groove 123 of the fixing rod in the middle of the tube sleeve.
As shown in fig. 2, the outer side of the positioning cap 14 is provided with a third rubber ring 141 and a fourth rubber ring 142 which are in contact seal with the inner side of the fixed rod 12; the outer side of the positioning cap 14 is provided with a rubber ring five 143 and a rubber ring six 144 which are in contact seal with the inner components of the pipe body sleeve 11.
The external thread of the first bolt 16 is connected with the internal thread of the fixed rod 12, and is tightly pressed and fixed by the gasket 15 to the positioning cap 14.
The instrument box II 77 is sleeved in the instrument box I66, and further, the instrument box II and the instrument box I are concentric, the bottom surface of the instrument box II is clung, and the positioning head II 771 is penetrated into the groove II 665 to be matched and positioned.
The second bolt 17 passes through the middle hole of the second instrument box 77, and further, the external thread of the second bolt is in threaded connection and matched with the internal thread of the fixed rod 12, and the first rubber ring 121 is positioned in the groove below the bottom surface of the second instrument box 77 and above the fixed rod 12 to be matched and sealed.
In addition, the glass surface 79 is positioned on the positioning surface 773 above the instrument box II 77, and the rubber ring seven 78 is positioned in the groove III 772; further, the inner threads of the gland 88 are matched with the outer threads 664 of the first instrument box 66, the glass surface 79 is pressed by the pressing surface 881, and the rubber ring seven 78 is pressed for sealing.
For maintenance or replacement of devices within the circuit box: by releasing the lead seal on the lead seal ring 661 outside the outer circuit box 66 from the via 882 of the gland 88, the gland is rotated and removed to facilitate maintenance and replacement of the battery.
The embodiment of the utility model is illustrated by the above description, namely, the double-layer structure instrument circuit box, the implementation of the DN80 caliber correlation ultrasonic water meter circuit box is illustrated, but the utility model is not limited to the specific embodiment, and the utility model is applicable to other circuit boxes of different types of instruments and meters, and any modification or variation based on the content of the utility model is within the scope of the utility model.
Claims (7)
1. The instrument circuit box with the double-layer structure is characterized by comprising a pipe body sleeve (11), a fixed rod (12), a positioning cap (14), a first bolt (16), a second bolt (17), a gland (88), a first instrument box (66), a connecting rod (662), a second instrument box (77), a glass surface (79) and a circuit board (81); the connecting rod (662) under the instrument box I (66) is sleeved with the outer side of the fixed rod (12) in the middle of the tube body sleeve (11) and is sealed by the rubber ring II (122); the inside of the fixed rod is provided with a positioning cap (14) for positioning and a rubber ring for sealing; the instrument box II (77) is sleeved in the instrument box I (66), and the instrument box II and the instrument box I are pressed and fixed by the bolt II (17); the glass surface (79) is positioned at the upper opening of the instrument box II (77) and is pressed and fixed by matching the internal thread of the pressing cover (88) with the external thread (664) of the instrument box I (66); the signal wire (333) is electrically connected with a circuit board (81) in the instrument box II (77) through a hole in the positioning cap (14), so that the instrument circuit box with a double-layer structure is formed.
2. The instrument circuit box with the double-layer structure of claim 1, wherein the connecting rod (662) is sleeved outside the fixing rod (12) in the middle of the tube body sleeve (11), and further, a positioning head (663) is arranged at the lower end of the connecting rod (662) and is in butt joint and positioning with the groove (123) of the fixing rod in the middle of the tube body sleeve.
3. The instrument circuit box with the double-layer structure according to claim 1, wherein the outer side of the positioning cap (14) is provided with a third rubber ring (141) and a fourth rubber ring (142) which are in contact sealing with the inner side of the fixed rod (12); the outer side of the positioning cap (14) is provided with a rubber ring five (143) and a rubber ring six (144) which are in contact seal with the inner components of the pipe body sleeve (11).
4. The instrument circuit box with the double-layer structure according to claim 1, wherein the external thread of the first bolt (16) is connected with the internal thread of the fixed rod (12) and is tightly pressed and fixed by the gasket (15) and the positioning cap (14).
5. The instrument circuit box with the double-layer structure of claim 1, wherein the instrument box II (77) is sleeved in the instrument box I (66), and further, the instrument box II and the instrument box I are concentric, the bottom surfaces of the instrument box II and the instrument box I are clung, and the positioning head II (771) is penetrated into the groove II (665) to be matched and positioned.
6. The instrument circuit box with the double-layer structure according to claim 1, wherein the second bolt (17) penetrates through a middle hole of the second instrument box (77), further, the outer thread of the second bolt is in threaded connection fit with the inner thread of the fixed rod (12), and the first rubber ring (121) is positioned in a groove below the bottom surface of the second instrument box (77) and above the fixed rod (12) to be matched and sealed.
7. The instrument circuit box with the double-layer structure according to claim 1, wherein the glass surface (79) is positioned on a positioning surface (773) above the instrument box II (77), and the rubber ring seven (78) is positioned in the groove III (772); further, the inner thread of the gland (88) is matched with the outer thread (664) of the first instrument box (66), the glass surface (79) is pressed by the pressing surface (881), and the rubber ring seven (78) is extruded to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321424056.0U CN220067926U (en) | 2023-06-06 | 2023-06-06 | Instrument circuit box with double-layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321424056.0U CN220067926U (en) | 2023-06-06 | 2023-06-06 | Instrument circuit box with double-layer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220067926U true CN220067926U (en) | 2023-11-21 |
Family
ID=88783882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321424056.0U Active CN220067926U (en) | 2023-06-06 | 2023-06-06 | Instrument circuit box with double-layer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220067926U (en) |
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2023
- 2023-06-06 CN CN202321424056.0U patent/CN220067926U/en active Active
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