CN220854537U - Gas density transmitter - Google Patents
Gas density transmitter Download PDFInfo
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- CN220854537U CN220854537U CN202322573977.XU CN202322573977U CN220854537U CN 220854537 U CN220854537 U CN 220854537U CN 202322573977 U CN202322573977 U CN 202322573977U CN 220854537 U CN220854537 U CN 220854537U
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- Prior art keywords
- watchcase
- gas density
- temperature sensor
- pressure
- pressure temperature
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- 238000007789 sealing Methods 0.000 claims abstract description 32
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a gas density transmitter, which relates to the technical field of power equipment and power systems and comprises a pressure temperature acquisition device, wherein the pressure temperature acquisition device comprises a watchcase, a bushing, a lining and a pressure temperature sensor, the inside of the watchcase is a sealing area, the bushing is hermetically arranged on the lower end face of the watchcase, the pressure temperature sensor is arranged in the bushing, the lining is arranged between the outer wall of the pressure temperature sensor and the inner wall of the bushing, and the pressure temperature sensor is at least partially arranged in the sealing area; the upper end face of the watchcase is provided with a cushion block, the cushion block is in sealing connection with the watchcase through a first sealing gasket, the cushion block is provided with a cover, and the cover is fixed on the watchcase; an outlet is arranged on one side face of the watchcase, the outlet is connected with a connecting base, the outlet is in sealing connection with the connecting base through a second sealing gasket, and the connecting base is used for installing a connecting terminal.
Description
Technical Field
The utility model relates to the technical field of power equipment and power systems, in particular to a gas density transmitter.
Background
At present, SF 6 (sulfur hexafluoride) electrical equipment is widely applied to the power departments and industrial and mining enterprises, and rapid development of the power industry is promoted. In recent years, with the development of economy and high speed, the capacity of the power system in China is rapidly enlarged, and the use amount of SF 6 electrical equipment is increased. The role of SF 6 gas in high voltage electrical equipment is to quench and insulate, and the reduced density of SF 6 gas in high voltage electrical equipment will seriously affect the safe operation of SF 6 high voltage electrical equipment: a reduction in SF 6 gas density to a certain extent will result in a loss of insulation and arc extinction properties.
Along with the development of the unattended transformer substation to the networking and digitalization directions and the continuous enhancement of the requirements on remote control and remote measurement, the method has important practical significance on-line monitoring of the gas density of SF 6 electrical equipment. Along with the continuous and vigorous development of the intelligent power grid and the ubiquitous power Internet of things, the intelligent high-voltage electric equipment is used as an important component and a key node of an intelligent substation, and plays a role in the safety of the intelligent power grid. Most of the prior high-voltage electrical equipment is SF 6 gas insulation equipment, and if the gas density is reduced (such as caused by leakage, etc.), the electrical performance of the equipment is seriously affected, and serious hidden danger is caused to the safe operation. Currently, on-line monitoring of gas density values in SF 6 high-voltage electrical equipment is very common, and particularly, the national network proposes to build ubiquitous electric power Internet of things, so that the application of a gas density monitoring system (a gas density relay) is vigorous. Whereas current gas density monitoring systems (gas density relays) are basically: 1) The remote SF 6 gas density relay is used for collecting density, pressure and temperature, uploading and on-line monitoring of gas density. 2) The gas density transmitter is used for realizing the acquisition, uploading and on-line monitoring of the density, the pressure and the temperature of the gas. At present, an ordinary SF 6 gas density relay is widely installed and used in SF 6 high-voltage electrical equipment, and in order to realize on-line monitoring of gas density without replacing the existing ordinary SF 6 gas density relay, a three-way valve and a gas density transmitter are generally added for realizing. The conventional gas density transmitter at present acquires real-time pressure signals and temperature signals, and obtains corresponding density values P 20 through processing by an intelligent processor according to the pressure-temperature characteristics of the gas, and remotely transmits the density values P 20, the pressure values and the temperature values by a communication module, so that the gas is monitored on line. The gas density transmitter needs to collect pressure signals and temperature signals and processes the pressure signals and the temperature signals through the intelligent processor, and the on-site SF6 high-voltage electrical equipment is complex in use environment and large in interference, so that the accuracy of the pressure signals and the temperature signals is greatly affected.
Therefore, there is an urgent need for a gas density transmitter with high insulation.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model provides a gas density transmitter, which solves the problem of inaccurate acquisition of pressure signals and temperature signals caused by complex field use environment and large interference in the prior art.
In order to achieve the above object, the present utility model provides a gas density transmitter, including a pressure and temperature collecting device, where the pressure and temperature collecting device includes a watchcase, a bushing, a liner and a pressure and temperature sensor, the inside of the watchcase is a sealing area, the bushing is installed on the lower end surface of the watchcase in a sealing manner, the pressure and temperature sensor is installed in the bushing, the liner is installed between the outer wall of the pressure and temperature sensor and the inner wall of the bushing, and the pressure and temperature sensor is at least partially installed in the sealing area; the upper end face of the watchcase is provided with a cushion block, the cushion block is in sealing connection with the watchcase through a first sealing gasket, the cushion block is provided with a cover, and the cover is fixed on the watchcase; an outlet is arranged on one side face of the watchcase, the outlet is connected with a connecting base, the outlet is in sealing connection with the connecting base through a second sealing gasket, and the connecting base is used for installing a connecting terminal.
The gas density transmitter further comprises a connector arranged on the lower end face of the bushing and a nut connected with the connector, wherein an O-shaped sealing ring is arranged at the joint of the connector and the nut; the bushing is provided with a support plate for mounting and supporting an insulating pad, and the insulating pad is arranged between the lower end face of the pressure temperature sensor and the support plate.
The gas density transmitter further comprises a pad and a compression nut, one end of the pad is fixedly connected with the upper end face of the pressure temperature sensor, and the compression nut is fixedly arranged at the other end of the pad.
As described above, the gas density transmitter further comprises a circuit board in the sealing area, wherein the insulating board is fixedly arranged on the surface of the compression nut, the circuit board is arranged above the insulating board, and the circuit board is fixedly connected with the insulating board through the spacing columns.
The gas density transmitter as described above, further comprising an insulating sleeve between the watch case and the circuit board.
The gas density transmitter further comprises a cable on the pressure temperature sensor, wherein the cable is electrically connected with the circuit board.
As described above, the gas density transmitter further comprises an intelligent processor, a power supply and a communication module integrated on the circuit board, wherein the intelligent processor is electrically connected with the pressure temperature sensor, the communication module is electrically connected with the connection base, and the connection terminal is electrically connected with the connection base.
The gas density transmitter as described above, further wherein the insulating mat, the inner liner and the backing block are all made of insulating material.
Compared with the prior art, the utility model has the beneficial effects that: the technical scheme of the utility model solves the problem that the pressure signal and the temperature signal are not accurately acquired due to complex field use environment and large interference of the gas density transmitter, ensures the accuracy of the gas density value P 20 of the gas density on-line monitoring, and can be well applied to SF 6 high-voltage electrical equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the internal semi-section of a gas density transmitter of the present utility model;
FIG. 2 is an exploded view of a pressure and temperature acquisition device for a gas density transmitter according to the present utility model;
FIG. 3 is a schematic diagram of a control circuit of a gas density transmitter according to the present utility model.
In the figure, the label is numbered and the name: 10. a watch case; 11. a joint; 12. a nut; 13. an O-shaped sealing ring; 14. a bushing; 15. an insulating pad; 16. a lining; 17. a pressure temperature sensor; 18. a pad; 19. a compression nut; 20. an insulating sleeve; 21. an insulating plate; 22. a screw; 23. spacing columns; 24. a circuit board; 25. a first gasket; 26. a cushion block; 27. a cover cap; 28. a wire outlet; 29. a second gasket; 30. the base is connected; 31. a connection terminal; 50. an intelligent processor; 51. a power supply; 52. and a communication module.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1 to 3, the pressure and temperature collecting apparatus includes a case 10, a joint 11, a nut 12, an O-ring 13, a bushing 14, an insulating mat 15, a lining 16, a pressure and temperature sensor 17, a pad 18, and a compression nut 19.
It should be noted that the inside of the case 10 is a sealed area; the upper end face of the watchcase 10 is provided with a cushion block 26, the cushion block 26 is in sealing connection with the watchcase 10 through a first sealing gasket 25, the cushion block 26 is provided with a cover cap 27, and the cover cap 27 is fixed on the watchcase 10; a wire outlet 28 is arranged on one side surface of the watchcase 10, the wire outlet 28 is connected with a connecting base 30, and the wire outlet 28 is in sealing connection with the connecting base 30 through a second sealing gasket 29; the sealing between the bush 14 and the case 10 is achieved by welding, and the bush 14 and the joint 11 are achieved by welding.
Further, a bush 14 is sealingly mounted on the lower end face of the case 10; the liner 14 is internally provided with a pressure and temperature sensor 17, a liner 16 is arranged between the outer wall of the pressure and temperature sensor 17 and the inner wall of the liner 14, and the pressure and temperature sensor 17 is at least partially arranged in the sealing area inside the watchcase 10.
Further, the pressure and temperature acquisition device also comprises a joint 11 arranged on the lower end face of the bushing 14 and a nut 12 connected with the joint 11, wherein an O-shaped sealing ring 13 is arranged at the joint of the joint 11 and the nut 12.
Further, the bushing 14 is provided with a support plate for mounting a support insulating pad, and the insulating pad 15 is provided between the lower end face of the pressure temperature sensor 17 and the support plate.
Further, the pressure and temperature acquisition device further comprises a backing block 18 and a compression nut 19, one end of the backing block 18 is fixedly connected with the upper end face of the pressure and temperature sensor 17, and the compression nut 19 is fixedly arranged at the other end of the backing block 18.
Further, a circuit board 24 is further provided in the inner sealing area of the case 10, the insulating board 21 is fixed on the surface of the compression nut 19 by a screw 22, and the circuit board 24 is fixedly connected with the insulating board 21 by a spacer 23 and is disposed above the insulating board 21.
Further, an insulating sleeve 20 is provided between the case 10 and the circuit board 24.
It should be noted that, the insulating pad 15, the inner liner 16 and the pad 18 are all made of insulating materials, and in the pressure temperature acquisition device in this embodiment, the periphery of the pressure temperature sensor 17 is made of insulating materials, so that the anti-interference performance of the pressure temperature sensor 17 is improved; an insulating sleeve 20 is arranged between the watchcase 10 and the circuit board 24, so that the anti-interference performance of the circuit board can be improved.
Further, the pressure temperature sensor 17 is provided with a cable, and the cable is electrically connected with the circuit board 24; the intelligent processor 50, the power supply 51 and the communication module 52 are integrated on the circuit board 24; the intelligent processor 50 calculates a gas density value P 20 according to the pressure value P and the temperature value T acquired by the pressure temperature sensor 17; the communication module 52 is electrically connected with the connection base 30, and the connection terminal 31 is electrically connected with the connection base 30; the communication module 52 completes data transmission through the connection terminal 31 with the calculated gas density value P 20, and online monitoring is achieved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the essence of the present utility model are intended to be included within the scope of the present utility model.
Claims (8)
1. A gas density transmitter, comprising:
The pressure temperature acquisition device comprises a watchcase, a lining and a pressure temperature sensor, wherein the interior of the watchcase is a sealing area, the lining is installed on the lower end face of the watchcase in a sealing way, the lining is internally provided with the pressure temperature sensor, the lining is arranged between the outer wall of the pressure temperature sensor and the inner wall of the lining, and the pressure temperature sensor is at least partially arranged in the sealing area; the upper end face of the watchcase is provided with a cushion block, the cushion block is in sealing connection with the watchcase through a first sealing gasket, the cushion block is provided with a cover, and the cover is fixed on the watchcase; an outlet is arranged on one side face of the watchcase, the outlet is connected with a connecting base, the outlet is in sealing connection with the connecting base through a second sealing gasket, and the connecting base is used for installing a connecting terminal.
2. The gas density transmitter of claim 1 wherein the pressure and temperature acquisition device further comprises a joint mounted on the lower end surface of the bushing and a nut connected with the joint, wherein an O-ring is arranged at the joint of the joint and the nut; the bushing is provided with a support plate for mounting and supporting an insulating pad, and the insulating pad is arranged between the lower end face of the pressure temperature sensor and the support plate.
3. The gas density transmitter of claim 2, wherein the pressure and temperature acquisition device further comprises a pad and a compression nut, one end of the pad is fixedly connected with the upper end face of the pressure and temperature sensor, and the compression nut is fixedly arranged at the other end of the pad.
4. The gas density transmitter of claim 3, wherein a circuit board is further arranged in the sealing area, an insulating plate is fixedly arranged on the surface of the compression nut, the circuit board is arranged above the insulating plate, and the circuit board is fixedly connected with the insulating plate through a spacing column.
5. The gas density transmitter of claim 4 wherein an insulating sleeve is disposed between the watch case and the circuit board.
6. The gas density transmitter of claim 4 wherein the pressure temperature sensor has an electrical cable thereon, the electrical cable being electrically connected to the circuit board.
7. The gas density transmitter of claim 4, wherein the circuit board is integrated with an intelligent processor, a power supply and a communication module, the intelligent processor is electrically connected with the pressure temperature sensor, the communication module is electrically connected with the connection base, and the connection terminal is electrically connected with the connection base.
8. The gas density transmitter of claim 3 wherein the insulating mat, the inner liner and the backing block are all of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322573977.XU CN220854537U (en) | 2023-09-21 | 2023-09-21 | Gas density transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322573977.XU CN220854537U (en) | 2023-09-21 | 2023-09-21 | Gas density transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220854537U true CN220854537U (en) | 2024-04-26 |
Family
ID=90776368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322573977.XU Active CN220854537U (en) | 2023-09-21 | 2023-09-21 | Gas density transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220854537U (en) |
-
2023
- 2023-09-21 CN CN202322573977.XU patent/CN220854537U/en active Active
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