CN2519397Y - Pointer type SF6 gas density relay - Google Patents
Pointer type SF6 gas density relay Download PDFInfo
- Publication number
- CN2519397Y CN2519397Y CN 01273782 CN01273782U CN2519397Y CN 2519397 Y CN2519397 Y CN 2519397Y CN 01273782 CN01273782 CN 01273782 CN 01273782 U CN01273782 U CN 01273782U CN 2519397 Y CN2519397 Y CN 2519397Y
- Authority
- CN
- China
- Prior art keywords
- temperature
- tube
- temperature sensing
- pointer
- measuring tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000523 sample Substances 0.000 claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 6
- 229960000909 sulfur hexafluoride Drugs 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 229910018503 SF6 Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses an SF6 gas density relay with pointer and comprises a spring base seat, a relay shell comprising a temperature sensing tube and a measuring tube, a mechanism assembly connected on the temperature sensing tube, a meter dial, a pointer, a temperature sensing probe, a back electric contact device and a capillary tube. One end of the measuring tube is fixed with the spring base seat and is communicated with the pressure port, and the capillary tube led out from one end of t he temperature sensing tube goes through the measuring tube and is connected with the temperature sensing probe. The fixing end of the temperature sensing tube and the free end of the measuring tube are integrated into a whole. The shell comprises a ring shaped body, a front cover and a back cover. The utility model is characterized in that two same elastic tubes (the temperature sensing tube and the measuring tube) are filled with gas of same pressure, ensuring that the displacement difference of the pointer connected with the free end of the temperature sensing tube caused by temperature changing is always zero.
Description
Technical field
The utility model relates to monitoring electrical equipment SF
6The monitoring device of gas density particularly can be when gas temperature changes, a kind of SF of monitoring gas density
6Gas density relay.
Background technology
The arc extinguishing of sulfur hexafluoride gas and insulation property and its variable density relation are very big, so the monitoring sulfur hexafluoride gas density is most important in the equipment.The monitoring to sulfur hexafluoride gas density in the equipment is finished in the effect of pointer-type density monitor exactly.If sulfur hexafluoride gas takes place to leak its density is reduced in the equipment, then may cause the equipment explosion power failure during operation; Serious casualties then.
The structure of the pointer density monitor of monitoring sulphur hexafluoride power equipment has two types in the prior art.Be spring-tube type ordinarily manometer (electro connecting pressure gauge), and increase a temperature compensation mechanism, make its temperature influence not in the variation of ambient temperature process.It comprises spring support, movement, bourdon tube electric contact set etc.Wherein a kind of is that temperature compensation mechanism is a bimetallic type, and its shortcoming is a limited location system, and promptly the temperature of installation site will want consistent with tested gas temperature (ambient temperature), otherwise can not use.Another kind is to increase a spring temperature-sensitive pipe (temperature compensation mechanism) between described movement and measuring spring pipe in addition, is drawn a copper capillary tube and is connected on the outside temperature-sensing probe to the outside by spring temperature-sensitive pipe.Temperature-sensing probe is identical with tested gas temperature during work, has solved the bimetallic type shortcoming like this.But because copper capillary tube has certain rigid, its type of attachment can produce additional force in measuring process, and this power increases along with the increase of change in displacement, and inconsistent with the deformation force of measuring tube, and it is more and more low that build-up of pressure increases the back certainty of measurement.In the course of the work temperature-compensating is also impacted simultaneously.
Summary of the invention
The purpose of this utility model provides a kind of pointer SF
6Gas density relay, it had not both had the restriction of installation site, and measured accurately, had solved the deficiency that above-mentioned prior art exists.
This purpose realizes with following technical proposal: this pointer-type SF
6Gas density relay, it comprises temperature-sensitive pipe, measuring tube in spring pedestal, shell, the shell, the movement assembly that joins with the temperature-sensitive pipe, dial plate, pointer, temperature-sensing probe and postposition type electric contact arrangement, wherein the stiff end of measuring tube is connected with the spring pedestal and communicates with pressure tap, the stiff end of the free end of measuring tube and temperature-sensitive pipe is connected as a single entity, and has a capillary to draw and pass measuring tube from temperature-sensitive pipe stiff end and is connected to temperature-sensing probe.Described shell is made of an annular solid and protecgulum, bonnet.Forward and backward lid in the shell is threaded or clamping with the annular solid two ends respectively.Dial plate is fixed on the spring pedestal by column.
Characteristic of the present utility model is the close bourdon tube (temperature-sensitive pipe, measuring tube) of two parameters its variations in temperature of how much controlling by standard pipe (capillary) aeration quantity.Promptly during fabrication by regulating what of capillary aeration quantity, making its displacement that when variation of ambient temperature temperature-sensitive pipe free end is caused is zero.The design's main feature is because capillary trend rationally (promptly passing in measuring tube) can not produce additional force to the temperature-sensitive pipe, so the indicating value influence is very little during variations in temperature.So compared with prior art, have reasonable in design, characteristics such as manufacturing process is simple, working stability is reliable, certainty of measurement height.
Description of drawings
Following accompanying drawing has provided embodiment of the present utility model.
Fig. 1 is an internal structure schematic diagram of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional schematic.
Embodiment
In conjunction with the accompanying drawings overall structure of the present utility model and operation principle are described in detail: as shown in Figure 1, 2, this pointer-type SF
6Gas density relay includes the spring pedestal 1 that is welded on the shell 2, by central shaft movement assembly 5, pointer 7 is housed on the spring pedestal, and dial plate 6 is installed on the spring pedestal by column 10.The formation of transmission mechanism and annexation and prior art are basic identical in the movement.Rearmounted electric contact set 8 is fixed on the back side of spring pedestal, by the driving lever drive at central shaft (pointer shaft) rear portion.The stiff end of measuring tube 4 is welded on the spring pedestal 1, and is communicated with pressure tap 15.The welding in parallel of the stiff end of temperature-sensitive pipe 3 with the free end of measuring tube 4.One end of capillary 9 is drawn by the stiff end of temperature-sensitive pipe 3, and its other end passes measuring tube 4 and is connected to temperature-sensing probe 11.The free end of temperature-sensitive pipe 3 and movement assembly are hinged.Shell 2 is made of three parts.Be annular solid 12, protecgulum 13, bonnet 14 3 parts composition, forward and backward lid is threaded respectively with the annular solid two ends.Before be stamped the glass front cover.There is the seal sealing other junction of relay.Dial plate 6 is fixed on the spring pedestal 1 by two root posts 10.Each parts selection and prior art in the overall structure are basic identical.
Its operation principle: introduce tested gas by spring pedestal pressure tap, make measuring tube generation deformation produce displacement and drive the movement rotation, make tested gas density value on the pointer indication dial plate, when reaching the regulation density value, the driving lever at movement central shaft rear portion is stirred electric contact set, makes it the contact and disconnects.If during variation of ambient temperature, because capillary does not produce active force to system, the pressure variation of measuring tube and temperature-sensitive pipe produces reverse displacement separately and equates, and the displacement of the place of being hinged of sector is zero in the movement, be that the pointer indicating value is constant, so be not subjected to the influence of ambient temperature in measuring.When if tested pressure leakage descends; cause that measuring tube deformation produces displacement; pointer position changes simultaneously; indicating value descends; when dropping to certain value, the rearmounted electric contact set closing of contact is sent signal (contact is serially connected in the control loop of equipment); the sulphur hexafluoride power equipment is quit work, and protected.
Claims (3)
1, a kind of pointer SF
6Gas density relay, it comprises spring pedestal (1), shell (2), temperature-sensitive pipe (3) is arranged in the shell, measuring tube (4), the movement assembly (5) that joins with the temperature-sensitive pipe, dial plate (6), pointer (7), temperature-sensing probe (11) and postposition type electric contact arrangement (8), wherein the stiff end of measuring tube (4) joins with spring pedestal (1) and communicates with pressure tap, the stiff end of the free end of measuring tube (4) and temperature-sensitive pipe (3) is connected as a single entity, it is characterized in that having a capillary (9) to draw and pass measuring tube from temperature-sensitive pipe stiff end and be connected to temperature-sensing probe (11), described shell (2) is by an annular solid (12) and protecgulum (13), bonnet (14) constitutes.
2, pointer SF according to claim 1
6Gas density relay is characterized in that protecgulum (13), the bonnet (14) in the shell (2) is threaded or clamping with annular solid (12) two ends respectively.
3, pointer SF according to claim 1
6Gas density relay is characterized in that dial plate (6) is fixed on the spring pedestal (1) by column (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273782 CN2519397Y (en) | 2001-12-30 | 2001-12-30 | Pointer type SF6 gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273782 CN2519397Y (en) | 2001-12-30 | 2001-12-30 | Pointer type SF6 gas density relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2519397Y true CN2519397Y (en) | 2002-10-30 |
Family
ID=33678642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01273782 Expired - Fee Related CN2519397Y (en) | 2001-12-30 | 2001-12-30 | Pointer type SF6 gas density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2519397Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364024C (en) * | 2005-04-11 | 2008-01-23 | 平高集团有限公司 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
| CN102081027A (en) * | 2010-12-17 | 2011-06-01 | 沈阳仪表科学研究院 | Mechatronics density transmitter |
| CN101038829B (en) * | 2006-03-17 | 2011-06-29 | 苏丽芳 | Heightening operation arm anti-vibration pointer type SF6 gas density relay |
| CN101202178B (en) * | 2006-12-12 | 2012-04-18 | 苏丽芳 | Determination method for locating piece position in pointer type SF6 gas density relay |
| CN108231475A (en) * | 2018-01-12 | 2018-06-29 | 上海乐研电气有限公司 | Sulfur hexafluoride gas density relay |
-
2001
- 2001-12-30 CN CN 01273782 patent/CN2519397Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364024C (en) * | 2005-04-11 | 2008-01-23 | 平高集团有限公司 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
| CN101038829B (en) * | 2006-03-17 | 2011-06-29 | 苏丽芳 | Heightening operation arm anti-vibration pointer type SF6 gas density relay |
| CN101202178B (en) * | 2006-12-12 | 2012-04-18 | 苏丽芳 | Determination method for locating piece position in pointer type SF6 gas density relay |
| CN102081027A (en) * | 2010-12-17 | 2011-06-01 | 沈阳仪表科学研究院 | Mechatronics density transmitter |
| CN102081027B (en) * | 2010-12-17 | 2012-10-10 | 沈阳仪表科学研究院 | Mechatronics density transmitter |
| CN108231475A (en) * | 2018-01-12 | 2018-06-29 | 上海乐研电气有限公司 | Sulfur hexafluoride gas density relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XIAN VIVIAN POWER METER CO., LTD. Free format text: FORMER NAME OR ADDRESS: GAO XINBANG; CHENG DAQING |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Xi'an Wei'an Electric Instrument Co. Ltd. Patentee before: Gao Xinbang Patentee before: Cheng Daqing |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |