CN202916159U - Moisture densimeter - Google Patents
Moisture densimeter Download PDFInfo
- Publication number
- CN202916159U CN202916159U CN201220615555.3U CN201220615555U CN202916159U CN 202916159 U CN202916159 U CN 202916159U CN 201220615555 U CN201220615555 U CN 201220615555U CN 202916159 U CN202916159 U CN 202916159U
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- China
- Prior art keywords
- collection chamber
- hole
- die cavity
- admission gear
- packoff
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Abstract
The utility model relates to a moisture densimeter used in power industry. The moisture densimeter includes an air collection chamber, wherein an axial step-shaped through hole and a radial step counterbore are formed inside the air collection chamber, so as to form an internally-communicated cavity of the air collection chamber; the cavity of the air collection chamber is internally provided with a temperature sensor (11), a humidity sensor (13) and a pressure sensor (12); an air inlet device and an air supply device are connected to the two ends of the air collection chamber respectively; a cavity sealing device (3) is arranged on the radial step-shaped counterbore of the cavity of the air collection chamber; a senor signal wire inside the cavity of the air collection chamber is led out through a round hole at the center of the cavity sealing device; and a sealant layer is arranged inside the round hole. The moisture densimeter provided by the utility model has small volume, excellent sealing performance and small dew point rate, overcomes the defects of the conventional moisture densimeter such as big volume, more sealing surfaces, more dew points and inaccurate temperature measurement, adopts small and precise designed elements, has a compact structure, and greatly reduces the volume of the complete machine as components are reasonably arranged inside as per the functions of the mounted components.
Description
Technical field
The utility model relates to little water-mass density instrument that a kind of power industry is used.
Background technology
SF
6Gas is widely used in the high voltage electric equipment owing to its excellent arc extinction performance and high-intensity insulating property.But SF
6The long-term high voltage operation of gas will be decomposed, and its analyte and the reaction of moisture in it can generate the poisonous and harmful product, not only can reduce SF
6Electric property, and these poisonous and harmful products enter atmosphere and also will constitute a threat to health of human body, but the suction of portion of product minute quantity causing death just, so be necessary constantly to monitor SF
6The water cut of gas, pressure and temperature are analyzed the ahead of time prevention of its variation tendency, in order to avoid cause a serious accident.At present, domesticly generally adopt little water-mass density instrument to SF
6Gas carries out on-line monitoring, and there is following defective on existing little water-mass density instrument structure: the one, its temperature sensor does not directly contact gas, affect the thermometric accuracy, the 2nd, pressure sensor component is large and be installed on the periphery of Density Measuring Instrument collection chamber, instrument volume and sealing surface have been increased, so that the dew point during measurement gas increases relatively.
The utility model content
The utility model is not enough for prior art, proposes a kind of little water-mass density instrument of architecture advances, and volume is little, good seal performance, dew point is few, thermometric is accurate.
The technical scheme that the utility model adopts:
A kind of little water-mass density instrument, contain collection chamber (18), have axial step shape through hole and step counter sink radially in described collection chamber inside, form the collection chamber die cavity of internal communication, set temperature sensor (11) in the described collection chamber die cavity, humidity sensor (13) and pressure transducer (12), the collection chamber two ends connect respectively admission gear and making-up air device, radially counter sink at the collection chamber die cavity is provided with die cavity packoff (3), sensor signal lines in the collection chamber die cavity is drawn by the circular hole at described die cavity packoff (3) center, is provided with sealant layer in the described circular hole.
Described little water-mass density instrument, the admission gear center has step through-hole, admission gear is connected with collection chamber by screw thread, and there is O-ring seal to seal, the step through-hole at admission gear center keeps being communicated with the die cavity of collection chamber, be provided with the air inlet spool in the stepped hole, the other end end face of admission gear also is provided with packoff.
Described little water-mass density instrument, the packoff of admission gear one end end face comprises end cover and end cap tight loop, described end cover is one " protruding " font right cylinder, have pit on the small column therein, described small column puts in the step through-hole of admission gear, has several axial thread holes on the big column; Described end cap tight loop is the right cylinder that a center has " recessed " font through hole, have several axially extending bores on the described right cylinder, tight loop by " recessed " font through hole be connected with bolt with the axially extending bore of end cap by its axially extending bore again after admission gear is connected.
Described little water-mass density instrument, admission gear is one " protruding " font right cylinder, the step-like through hole that diameter does not wait is offered at the right cylinder center, in a step groove of right-hand member, be provided with O type circle, the stepped hole diameter of high order end is maximum, wherein be provided with internal thread, admission gear is connected with collection chamber by this screw thread, and middle stepped hole diameter is minimum; Air inlet spool right-hand member in the admission gear is an elongated fuse, left end is the cylinder that a core has pit, at the shaft shoulder position that cylinder and elongated fuse form, be fixed with O-ring seal, one spring is located at the left end of air inlet spool, the right-hand member of spring contacts with the cylindrical pit of spool, and the other end contacts with the step of collection chamber axial step through hole.
Described little water-mass density instrument, the making-up air device center has step through-hole, making-up air device is connected with collection chamber by the screw thread of its stepped hole right-hand member, and there is O-ring seal to seal, the step through-hole at making-up air device center is communicated with the die cavity of collection chamber, the left end of making-up air device is provided with dust cap, and the O-ring seal sealing is arranged, and the tonifying Qi spool is located in the stepped hole of making-up air device.
Described little water-mass density instrument, die cavity packoff (3) is that round-meshed right cylinder is opened at a center, outside surface at cylinder is provided with external thread, have internal thread in the big hole of the radially step counter sink outer end that the collection chamber middle part is offered, described die cavity packoff and collection chamber are threaded, and the junction also is provided with O-ring seal.
Described little water-mass density instrument, die cavity packoff (3) is that round-meshed right cylinder is opened at a center, be provided with external thread at described cylindrical outside surface, have internal thread in the big hole of the radially step counter sink outer end that the collection chamber middle part is offered, described die cavity packoff and collection chamber are threaded, and the junction also is provided with O-ring seal.
Described little water-mass density instrument, the upper surface of collection chamber is fixed with the circuit board cover with the coupling of step counter sink radially, and the circuit board of described circuit control system is fixedly arranged in the circuit board cover, the sensor signal lines connecting circuit control system of drawing from the collection chamber die cavity.
Useful good effect of the present utility model:
1, the little water-mass density instrument of the utility model, volume is little, good seal performance, dew point rate are little.Overcome that existing little water-mass density instrument volume is large, sealing surface is more, dew point is many, the coarse defective of thermometric.The small and exquisite precision of element design, compact conformation, inner by institute's arrangement function reasonable Arrangement, greatly reduced machine volume.
2, the little water-mass density instrument of the utility model makes collection chamber form an airtight die cavity by collection chamber die cavity packoff, air intake opening sealing and gas supplementing opening sealing, greatly reduces the dew point rate, has improved the accuracy of security and measurement.
3, the little water-mass density instrument of the utility model selects accurate New temperature sensor to be placed in the collection chamber, can accurately respond to the gas actual temperature.
Description of drawings
Fig. 1: the inner structure cut-open view of the little water-mass density instrument of the utility model;
Fig. 2: the inner enlarged drawing of the little water-mass density instrument of the utility model collection chamber die cavity.
Embodiment
Embodiment one: referring to Fig. 1, Fig. 2, the little water-mass density instrument of the utility model, contain collection chamber 18, have axial step shape through hole and step counter sink radially in described collection chamber inside, form the collection chamber die cavity of internal communication, set temperature sensor 11 in the described collection chamber die cavity, humidity sensor 13 and pressure transducer 12, the collection chamber two ends connect respectively admission gear 9 and making-up air device 17, radially counter sink at the collection chamber die cavity is provided with die cavity packoff 3, sensor signal lines in the collection chamber die cavity is drawn by the circular hole at described die cavity packoff 3 centers, is provided with sealant layer in the described circular hole.
Admission gear 9 is connected with collection chamber by screw thread, and the O-ring seal sealing is arranged, and the step through-hole at admission gear center keeps being communicated with the die cavity of collection chamber, is provided with air inlet spool 20 in the stepped hole, and the other end end face of admission gear also is provided with packoff.
Embodiment two: referring to Fig. 1, Fig. 2, and little water-mass density instrument of the present embodiment, different from embodiment one is further to disclose a kind of sealing device structure of admission gear end face.Described packoff comprises end cover 6 and end cap tight loop 5, described end cover is one " protruding " font right cylinder, have pit on the small column therein, described small column puts in the step through-hole of admission gear, has several axial thread holes on the big column; Described end cap tight loop is the right cylinder that a center has " recessed " font through hole, have several axially extending bores on the described right cylinder, tight loop by " recessed " font through hole be connected with bolt with the axially extending bore of end cap by its axially extending bore again after admission gear is connected.Numbering 7 is the O-ring seal that end cover 6 is connected with admission gear among the figure.
Embodiment three: referring to Fig. 1, Fig. 2, little water-mass density instrument of the present embodiment, different from embodiment one is, the admission gear structure that adopts is as follows: admission gear 9 is one " protruding " font right cylinder, and the step-like through hole that diameter does not wait is offered at the right cylinder center, is provided with O RunddichtringO 8 in a step groove of right-hand member, the stepped hole diameter of high order end is maximum, wherein be provided with internal thread, admission gear is connected with collection chamber by this screw thread, and middle stepped hole diameter is minimum; Air inlet spool 20 right-hand members in the admission gear are an elongated fuse, left end is the cylinder that a core has pit, at the shaft shoulder position that cylinder and elongated fuse form, be fixed with air inlet valve core seal ring 21, one spring 10 is located at the left end of air inlet spool, the right-hand member of spring 10 contacts with the cylindrical pit of spool, and the other end contacts with the step of collection chamber axial step through hole.
Embodiment four: referring to Fig. 1, Fig. 2, little water-mass density instrument of the present embodiment, different from aforementioned each embodiment is, the making-up air device structure that adopts is as follows: making-up air device 17 centers have step through-hole, making-up air device is connected with collection chamber by the screw thread of its stepped hole right-hand member, and by the sealing of device O-ring seal, the step through-hole at making-up air device center is communicated with the die cavity of collection chamber, the left end of making-up air device is provided with dust cap 14, and the O-ring seal sealing is arranged, tonifying Qi spool 16 is located in the stepped hole of making-up air device.
Embodiment five: referring to Fig. 1, Fig. 2, and little water-mass density instrument of the present embodiment, different from embodiment one is further, to disclose a kind of die cavity sealing device structure.Described die cavity packoff 3 is that round-meshed right cylinder is opened at a center, outside surface at cylinder is provided with external thread, have internal thread in the big hole of the radially step counter sink outer end that the collection chamber middle part is offered, described die cavity packoff and collection chamber are threaded, and the junction is provided with die cavity packoff O-ring seal 19.
The little water-mass density instrument of the utility model, the upper surface of collection chamber is fixed with circuit board cover 1 with the coupling of step counter sink radially, the circuit board 2 of described circuit control system is fixedly arranged in the circuit board cover, the sensor signal lines connecting circuit control system of drawing from the collection chamber die cavity.
Embodiment six: referring to Fig. 1～Fig. 2, among the figure, the present embodiment water-mass density instrument that newly declines, contain collection chamber 18, collection chamber 18 inside have axial step shape through hole and counter sink radially, through hole and counterbore keep being communicated with, and form inner die cavity, are placed with side by side temperature sensor 11, humidity sensor 13 and pressure transducer 12 about in die cavity.Radially counter sink at the collection chamber die cavity is provided with die cavity packoff 3, is provided with again O-ring seal 19 simultaneously; Sensor is in the collection chamber die cavity, and its signal wire is all drawn by the small sircle hole at collection chamber die cavity packoff center, and establishes packoff at small sircle hole, beats sealant sealing.
Have the admission gear 9 of step through-hole centered by the right side of collection chamber, admission gear 9 is connected with collection chamber by the screw thread of its left end, and the junction is provided with admission gear O-ring seal 4, and the step through-hole at admission gear center keeps being communicated with the die cavity of collection chamber; The face seals sealing is arranged on the right-hand member end face of admission gear 9; Face seals is comprised of end cover 6 and end cap tight loop 5, at first tight loop by its center " recessed " font through hole and after admission gear is connected, be connected again fastening with end cover, " protruding " font small column of end cover can put in the center pit of admission gear simultaneously, and the O RunddichtringO 8 in end cover O-ring seal 7 and the admission gear step groove can guarantee the sealing effectiveness of air intake opening end.
In the stepped hole of admission gear, be provided with air inlet spool 20, O-ring seal 21 is arranged on the spool, left end at spool is a spring 10, spring 10 1 ends contact with spool, the other end contacts with the step of collection chamber axially extending bore, so that spool and admission gear center pit step close contact reach sealing effectiveness.
Have the making-up air device 17 of step through-hole centered by the left side of collection chamber, making-up air device links to each other with collection chamber 18 by the screw thread of its stepped hole right-hand member, and the O-ring seal sealing is arranged, and the step through-hole at making-up air device center keeps being communicated with the die cavity of collection chamber; The left end of making-up air device is provided with dust cap 14, and dust cap is connected with making-up air device, between be provided with O-ring seal 15 sealing; In the stepped hole of making-up air device, be provided with tonifying Qi spool 16.
Like this by collection chamber die cavity packoff, air intake opening sealing and gas supplementing opening sealing, just make the collection chamber die cavity form an airtight die cavity, pressure, humidity, temperature sensor are placed on airtight die cavity inside simultaneously, gas enters in the airtight die cavity by air intake opening during instrument work, after pressure, humidity, temperature sensor obtain transducing signal, by signal lead signal is passed to circuit control system, detect.
Claims (8)
1. little water-mass density instrument, contain collection chamber (18), it is characterized in that: have axial step shape through hole and step counter sink radially in described collection chamber inside, form the collection chamber die cavity of internal communication, set temperature sensor (11) in the described collection chamber die cavity, humidity sensor (13) and pressure transducer (12), the collection chamber two ends connect respectively admission gear and making-up air device, radially counter sink at the collection chamber die cavity is provided with die cavity packoff (3), sensor signal lines in the collection chamber die cavity is drawn by the circular hole at described die cavity packoff (3) center, is provided with sealant layer in the described circular hole.
2. little water-mass density instrument according to claim 1, it is characterized in that: the admission gear center has step through-hole, admission gear one end is connected with collection chamber by screw thread, and there is O-ring seal to seal, the step through-hole at admission gear center keeps being communicated with the collection chamber die cavity, be provided with the air inlet spool in the stepped hole, the other end end face of admission gear also is provided with packoff.
3. little water-mass density instrument according to claim 2, it is characterized in that: the packoff of admission gear one end end face comprises end cover and end cap tight loop, described end cover is one " protruding " font right cylinder, have pit on the small column therein, described small column puts in the step through-hole of admission gear, has several axial thread holes on the big column; Described end cap tight loop is the right cylinder that a center has " recessed " font through hole, have several axially extending bores on the described right cylinder, tight loop by " recessed " font through hole be connected with bolt with the axially extending bore of end cap by its axially extending bore again after admission gear is connected.
4. little water-mass density instrument according to claim 1, it is characterized in that: admission gear is one " protruding " font right cylinder, step-like through hole is offered at the right cylinder center, in a step groove of right-hand member, be provided with O type circle, the stepped hole diameter of high order end is maximum, wherein be provided with internal thread, admission gear is connected with collection chamber by this screw thread, and middle stepped hole diameter is minimum; Air inlet spool right-hand member in the admission gear is an elongated fuse, left end is the cylinder that a core has pit, at the shaft shoulder position that cylinder and elongated fuse form, be fixed with O-ring seal, one spring is located at the left end of air inlet spool, the right-hand member of spring contacts with the cylindrical pit of spool, and the other end contacts with the step of collection chamber axial step through hole.
5. each described little water-mass density instrument according to claim 1～4, it is characterized in that: the making-up air device center has step through-hole, making-up air device is connected with collection chamber by the screw thread of its stepped hole right-hand member, and there is O-ring seal to seal, the step through-hole at making-up air device center is communicated with the collection chamber die cavity, the left end of making-up air device is provided with dust cap, and the O-ring seal sealing is arranged, and the tonifying Qi spool is located in the stepped hole of making-up air device.
6. little water-mass density instrument according to claim 5, it is characterized in that: die cavity packoff (3) is that round-meshed right cylinder is opened at a center, outside surface at cylinder is provided with external thread, have internal thread in the big hole of the radially step counter sink outer end that the collection chamber middle part is offered, described die cavity packoff and collection chamber are threaded, and the junction also is provided with O-ring seal.
7. each described little water-mass density instrument according to claim 1～4, it is characterized in that: die cavity packoff (3) is that round-meshed right cylinder is opened at a center, be provided with external thread at described cylindrical outside surface, have internal thread in the big hole of the radially step counter sink outer end that the collection chamber middle part is offered, described die cavity packoff and collection chamber are threaded, and the junction is provided with O-ring seal.
8. little water-mass density instrument according to claim 7, it is characterized in that: the upper surface of collection chamber is fixed with the circuit board cover with the coupling of step counter sink radially, the circuit board of described circuit control system is fixedly arranged in the circuit board cover, the sensor signal lines connecting circuit control system of drawing from the collection chamber die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220615555.3U CN202916159U (en) | 2012-11-20 | 2012-11-20 | Moisture densimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220615555.3U CN202916159U (en) | 2012-11-20 | 2012-11-20 | Moisture densimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916159U true CN202916159U (en) | 2013-05-01 |
Family
ID=48164464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220615555.3U Withdrawn - After Issue CN202916159U (en) | 2012-11-20 | 2012-11-20 | Moisture densimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487299A (en) * | 2013-07-24 | 2014-01-01 | 李虎 | Drying chamber of SF6 micro water tester |
| CN107255601A (en) * | 2017-07-20 | 2017-10-17 | 合肥裕朗机电科技有限公司 | A kind of transformer SF6 gas density is measuring apparatus |
-
2012
- 2012-11-20 CN CN201220615555.3U patent/CN202916159U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487299A (en) * | 2013-07-24 | 2014-01-01 | 李虎 | Drying chamber of SF6 micro water tester |
| CN103487299B (en) * | 2013-07-24 | 2015-09-09 | 李虎 | A kind of SF 6the hothouse of micro-water tester |
| CN107255601A (en) * | 2017-07-20 | 2017-10-17 | 合肥裕朗机电科技有限公司 | A kind of transformer SF6 gas density is measuring apparatus |
| CN107255601B (en) * | 2017-07-20 | 2020-05-08 | 合肥裕朗机电科技有限公司 | Transformer SF6 gas density measuring equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20201207 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20201207 |