CN201378070Y - Magnetostrictive liquid level sensor - Google Patents
Magnetostrictive liquid level sensor Download PDFInfo
- Publication number
- CN201378070Y CN201378070Y CN200920024126U CN200920024126U CN201378070Y CN 201378070 Y CN201378070 Y CN 201378070Y CN 200920024126 U CN200920024126 U CN 200920024126U CN 200920024126 U CN200920024126 U CN 200920024126U CN 201378070 Y CN201378070 Y CN 201378070Y
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- CN
- China
- Prior art keywords
- circuit board
- transmitter
- transmitter housing
- liquid level
- level sensor
- 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
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- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a magnetostriction liquid level sensor which comprises a transducer, a sensor and a floater, wherein a cable connecting part is arranged at the top end of the casing of the transducer; a circuit board bracket is arranged in the interior of the casing of the transducer; the circuit board bracket is fixedly connected with the bottom part of the casing of the transducer; the circuit board is fixedly connected with the circuit board bracket; the upper end of the outer pipe of the sensor is hermetically connected with the lower end of the casing of the transducer; a floater retaining ring is arranged at the lower end of the outer pipe of the sensor; the floater is connected in a sliding manner to the middle part of the outer pipe of the sensor; the magnetostrictive liquid level sensor is characterized in that a sealing and locking mechanism comprises a screw connector, a T-shaped hollow inner plug and an anti-corrosion sealing ring group, wherein the anti-corrosion sealing ring group consists of O-shaped sealing rings and V-shaped sealing rings. A sealing and connecting structure with multiple sealing and protecting effects is adopted for improving the air-tightness of the transducer part and preventing inside devices from being corroded, the ageing time of the devices is prolonged, and the service life of the product is improved.
Description
Technical field
The utility model relates to a kind of liquid level sensor, particularly a kind of magnetostrictive liquid level sensor.
Background technology
Magnetostrictive liquid level sensor in the prior art book comprises transmitter, sensor and float.Transmitter comprises transmitter housing and internal circuit, the top of transmitter housing is provided with cable connector mouths such as power supply and signal, the transmitter enclosure interior is provided with circuit board support, and circuit board support is fixedlyed connected with the lower end of transmitter housing, and circuit board is fixedly connected on the circuit board support; Sensor outer tube upper end is tightly connected by the lower end of seal-locking mechanism and transmitter housing, and sensor outer tube lower end is provided with the float back-up ring, is provided with the float that is slidingly connected in the middle of the sensor outer tube.Take above-mentioned cable connector mouth to connect external circuit technical approach,, cause oil gas to enter liquid level sensor inside easily, influence its serviceable life because the aviation plug sealing is not strong as adopting welding aviation plug mode.In addition, anti-mechanical shock of transmitter inner structure and impact are poor, easily cause measuring accuracy big measuring error to occur in transportation and installation process, and the transmitter volume are big, and it is excessive to measure the blind area, brings inconvenience for the liquid level sensor I﹠M.
The utility model content
The utility model is to provide a kind of magnetostrictive liquid level sensor, the outer pipe connecting structure good seal performance of transmitter in this magnetostrictive liquid level sensor and sensor.
Its technical solution is:
A kind of magnetostrictive liquid level sensor comprises transmitter, sensor and float; Transmitter comprises transmitter housing and circuit board, the top of transmitter housing is provided with cable connecting part, the inside of transmitter housing is provided with circuit board support, and circuit board support is fixedlyed connected with the bottom of transmitter housing, and circuit board is fixedly connected on the circuit board support; Sensor comprises sensor outer tube and inner core, and the upper end of sensor outer tube is tightly connected by the lower end of seal-locking mechanism and transmitter housing, and the lower end of sensor outer tube is provided with the float back-up ring, and the centre of sensor outer tube is provided with the float that is slidingly connected; Above-mentioned seal-locking mechanism comprises plug and preserving and sealing circle group in screw thread coupling, the T type hollow, and preserving and sealing circle group is made up of the O RunddichtringO and the V-shaped seal ring that distribute vertically.
Plug is provided with fore head and back rear in the above-mentioned T type hollow, fore head is inserted the transmitter lower part of frame, and be provided with two O RunddichtringOs in the preserving and sealing circle group in the joint, the rear side ring-shaped protrusion of fore head is bottled up spacing by the suitable interior teat of transmitter lower housing portion, the be in advance junction of portion and back rear is provided with V-shaped seal ring in the preserving and sealing circle group, screw thread coupling is provided with external thread section, the transmitter lower part of frame is provided with internal thread segment, screw thread coupling connects with the transmitter lower part of frame by external thread section, and screw thread coupling is provided with the jut that the base wall with the transmitter housing matches.
Above-mentioned cable connecting part, comprise extended thread segment of top passage port and non-corrosive metal (NCM) nut by the transmitter housing, the cable leading-in end passes the inside that non-corrosive metal (NCM) nut, top port enter the transmitter housing, the anticorrosion oil resistant rubber sealing shroud that cable is nested with is inserted in the thread segment and shutoff top port, the arranged outside of anticorrosion oil resistant rubber sealing shroud has anticorrosion oil resistant elasticity rigid plastic ring, and non-corrosive metal (NCM) nut and thread segment screw introduces the top that section is embedded in the transmitter housing in advance with cable.
The foregoing circuit plate is provided with the paster components and parts, be provided with annular yielding rubber cover between the top inwall of the top of circuit board and transmitter housing, top two collateral parts of circuit board are inserted in the notch of annular yielding rubber cover, the lower end of circuit board is a U type notch, and both sides trough side part and circuit board support are fixedly connected.
The foregoing circuit board mount is the hollow shaped body, be symmetrically arranged with platform part in hollow shaped body and arranged on left and right sides, the both sides trough side part of circuit board lower end is fixedly connected respectively on corresponding platform part, in the upper and lower symmetria bilateralis of hollow shaped body axial notch portion is set, the bottom of each axial notch portion is provided with screw.
The top of above-mentioned transmitter housing is provided with upper backup pad, and upper backup pad is provided with the connection draw-in groove, and the transmitter case top is provided with suitable last annular groove, and upper backup pad is connected in the annular groove by connecting draw-in groove; Above-mentioned screw thread coupling bottom is provided with lower supporting plate, and lower supporting plate is provided with the connection draw-in groove, and the screw thread coupling bottom is provided with suitable following annular groove, and lower supporting plate is connected to down in the annular groove by connecting draw-in groove.
In the utility model, take the structure that is tightly connected of multi-sealed protection, do not weather, can prolong the digestion time of device, improve product serviceable life in order to impermeability and the protection internal components that improves the transmitter part.Can have following beneficial effect in addition:
1, the technical approach taked of circuit board is enough to make anti-mechanical vibration of transmitter part and impact property to strengthen, and also can reduce the volume of transmitter part, helps dwindling measuring the blind area.
2, screw thread coupling etc. is taked the position limiting structure design, and upper and lower back up pad takes draw bails such as draw-in groove, and is more convenient when making production, installation and maintenance, strengthens its practicality.
3, circuit board support is taked hollow shaped body technical approach, is convenient to the layout of components and parts especially, and being connected and fixed between the part that be connected to each other.
4, make the entire product profile compact, more attractive in appearance more.
Description of drawings
Fig. 1 is a kind of embodiment structural principle of the utility model synoptic diagram.
Fig. 2 is the hollow shaped body left side TV structure synoptic diagram in Fig. 1 mode.
Below in conjunction with accompanying drawing the utility model is described:
Embodiment
In conjunction with Fig. 1 and Fig. 2, a kind of magnetostrictive liquid level sensor comprises transmitter, sensor and float.Transmitter comprises transmitter housing 1, and the top of transmitter housing 1 is provided with cable connecting part, and the inside of transmitter housing 1 is provided with circuit board 2 and circuit board support 3.Circuit board 2 is provided with the paster components and parts, be provided with annular yielding rubber cover 4 between the top inwall of the top of circuit board 2 and transmitter housing 1, top two collateral parts 201,202 of circuit board are inserted in the notch of annular yielding rubber cover 4, and the lower end of circuit board 2 is a U type notch; Circuit board support 3 is the hollow shaped body, left side at the hollow profile body, right symmetria bilateralis is provided with platform part 301,302, the both sides trough side part 203 of circuit board U type notch, 204 are fixedly connected in corresponding platform part 301 by screw etc. respectively, on 302, on the hollow profile body, following symmetria bilateralis is provided with axial notch portion 303,304, the bottom of each axial notch portion is provided with screw 305,306, with screw vertically concave part be fixedly connected in following T type hollow on the plug by screw, following sensor inner core can pass the interior plug of T type hollow and be incorporated in the hollow shaped body, and the inner chamber 307 of hollow profile body can be provided with relevant electrical component.Sensor comprises sensor outer tube 5 and inner core 6, the upper end of sensor outer tube 5 is tightly connected by the lower end of seal-locking mechanism 7 with transmitter housing 1, the lower end of sensor outer tube 5 is provided with float back-up ring 8, and the centre of sensor outer tube 5 is provided with the float 9 that is slidingly connected.Seal-locking mechanism 7 comprises plug 702 and preserving and sealing circle group in screw thread coupling 701, the T type hollow, and preserving and sealing circle group is made up of the V-shaped seal ring and the O RunddichtringO that distribute vertically; More specifically mode is: plug is provided with fore head and back rear in the T type hollow, fore head is inserted the transmitter lower part of frame, and be provided with two O RunddichtringOs 703 in the preserving and sealing circle group in the joint, the rear side ring-shaped protrusion 704 of fore head is bottled up spacing by the suitable interior teat in transmitter housing 1 bottom, the be in advance junction of portion and back rear is provided with V-shaped seal ring 705 in the preserving and sealing circle group, screw thread coupling 701 is provided with external thread section, the bottom of transmitter housing 1 is provided with internal thread segment, screw thread coupling connects with the transmitter lower part of frame by external thread section, and screw thread coupling 701 is provided with the jut 706 that the base wall with the transmitter housing matches.Above-mentioned cable connecting part, comprise extended thread segment in top port 101 places and non-corrosive metal (NCM) nut 10 by transmitter housing 1, cable 11 leading-in ends pass the inside that non-corrosive metal (NCM) nut 10, top port 101 enter the transmitter housing, the anticorrosion oil resistant rubber sealing shroud 12 that cable 11 is nested with is inserted in the thread segment and shutoff top port, the arranged outside of anticorrosion oil resistant rubber sealing shroud 12 has anticorrosion oil resistant elasticity rigid plastic ring 13, and non-corrosive metal (NCM) nut 10 screws with thread segment cable 11 is introduced the top that section is embedded in transmitter housing 1 in advance.The top of above-mentioned transmitter housing 1 is provided with upper backup pad 14, and upper backup pad 14 is provided with the connection draw-in groove, and transmitter housing 1 top is provided with suitable last annular groove, and upper backup pad 14 is connected in the annular groove by connecting draw-in groove; Above-mentioned screw thread coupling bottom is provided with lower supporting plate 15, and lower supporting plate 15 is provided with the connection draw-in groove, and the screw thread coupling bottom is provided with suitable following annular groove, and lower supporting plate is connected to down in the annular groove by connecting draw-in groove.
Claims (8)
1, a kind of magnetostrictive liquid level sensor comprises transmitter, sensor and float; Transmitter comprises transmitter housing and circuit board, the top of transmitter housing is provided with cable connecting part, the inside of transmitter housing is provided with circuit board support, and circuit board support is fixedlyed connected with the bottom of transmitter housing, and circuit board is fixedly connected on the circuit board support; Sensor comprises sensor outer tube and inner core, and the upper end of sensor outer tube is tightly connected by the lower end of seal-locking mechanism and transmitter housing, and the lower end of sensor outer tube is provided with the float back-up ring, and the centre of sensor outer tube is provided with the float that is slidingly connected; It is characterized in that: described seal-locking mechanism comprises plug and preserving and sealing circle group in screw thread coupling, the T type hollow, and preserving and sealing circle group is made up of the O RunddichtringO and the V-shaped seal ring that distribute vertically.
2, magnetostrictive liquid level sensor according to claim 1, it is characterized in that: plug is provided with fore head and back rear in the described T type hollow, fore head is inserted the transmitter lower part of frame, and be provided with two O RunddichtringOs in the preserving and sealing circle group in the joint, the rear side ring-shaped protrusion of fore head is bottled up spacing by the suitable interior teat of transmitter lower housing portion, the be in advance junction of portion and back rear is provided with V-shaped seal ring in the preserving and sealing circle group, screw thread coupling is provided with external thread section, the transmitter lower part of frame is provided with internal thread segment, screw thread coupling connects with the transmitter lower part of frame by external thread section, and screw thread coupling is provided with the jut that the base wall with the transmitter housing matches.
3, magnetostrictive liquid level sensor according to claim 1, it is characterized in that: described cable connecting part, comprise extended thread segment of top passage port and non-corrosive metal (NCM) nut by the transmitter housing, the cable leading-in end passes the non-corrosive metal (NCM) nut, the top port enters the inside of transmitter housing, the anticorrosion oil resistant rubber sealing shroud that cable is nested with is inserted in the thread segment and shutoff top port, the arranged outside of anticorrosion oil resistant rubber sealing shroud has anticorrosion oil resistant elasticity rigid plastic ring, and non-corrosive metal (NCM) nut and thread segment screw introduces the top that section is embedded in the transmitter housing in advance with cable.
4, magnetostrictive liquid level sensor according to claim 2, it is characterized in that: described cable connecting part, comprise extended thread segment of top passage port and non-corrosive metal (NCM) nut by the transmitter housing, the cable leading-in end passes the non-corrosive metal (NCM) nut, the top port enters the inside of transmitter housing, the anticorrosion oil resistant rubber sealing shroud that cable is nested with is inserted in the thread segment and shutoff top port, the arranged outside of anticorrosion oil resistant rubber sealing shroud has anticorrosion oil resistant elasticity rigid plastic ring, and non-corrosive metal (NCM) nut and thread segment screw introduces the top that section is embedded in the transmitter housing in advance with cable.
5, require described magnetostrictive liquid level sensor according to claim 1 to 4 is arbitrary, it is characterized in that: described circuit board is provided with the paster components and parts, be provided with annular yielding rubber cover between the top inwall of the top of circuit board and transmitter housing, top two collateral parts of circuit board are inserted in the notch of annular yielding rubber cover, the lower end of circuit board is a U type notch, and both sides trough side part and circuit board support are fixedly connected.
6, magnetostrictive liquid level sensor according to claim 5, it is characterized in that: described circuit board support is the hollow shaped body, be symmetrically arranged with platform part in hollow shaped body and arranged on left and right sides, the both sides trough side part of circuit board lower end is fixedly connected respectively on corresponding platform part, in the upper and lower symmetria bilateralis of hollow shaped body axial notch portion is set, the bottom of each axial notch portion is provided with screw.
7, magnetostrictive liquid level sensor according to claim 1 and 2, it is characterized in that: the top of described transmitter housing is provided with upper backup pad, upper backup pad is provided with the connection draw-in groove, the transmitter case top is provided with suitable last annular groove, and upper backup pad is connected in the annular groove by connecting draw-in groove; Described screw thread coupling bottom is provided with lower supporting plate, and lower supporting plate is provided with the connection draw-in groove, and the screw thread coupling bottom is provided with suitable following annular groove, and lower supporting plate is connected to down in the annular groove by connecting draw-in groove.
8, magnetostrictive liquid level sensor according to claim 6, it is characterized in that: the top of described transmitter housing is provided with upper backup pad, upper backup pad is provided with the connection draw-in groove, the transmitter case top is provided with suitable last annular groove, and upper backup pad is connected in the annular groove by connecting draw-in groove; Described screw thread coupling bottom is provided with lower supporting plate, and lower supporting plate is provided with the connection draw-in groove, and the screw thread coupling bottom is provided with suitable following annular groove, and lower supporting plate is connected to down in the annular groove by connecting draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024126U CN201378070Y (en) | 2009-03-24 | 2009-03-24 | Magnetostrictive liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024126U CN201378070Y (en) | 2009-03-24 | 2009-03-24 | Magnetostrictive liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378070Y true CN201378070Y (en) | 2010-01-06 |
Family
ID=41518186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920024126U Expired - Fee Related CN201378070Y (en) | 2009-03-24 | 2009-03-24 | Magnetostrictive liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378070Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957228A (en) * | 2010-08-20 | 2011-01-26 | 奇瑞汽车股份有限公司 | Cleaning solution level detection device |
| CN102183422A (en) * | 2011-03-15 | 2011-09-14 | 浙江大学 | Locking mechanism and impact tester device having locking mechanism |
| CN103474829A (en) * | 2013-09-13 | 2013-12-25 | 遵义市飞宇电子有限公司 | Sealing suspension connector |
| CN108254042A (en) * | 2016-12-29 | 2018-07-06 | 中国科学院沈阳自动化研究所 | A kind of deep-sea liquid level detecting sensor |
-
2009
- 2009-03-24 CN CN200920024126U patent/CN201378070Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957228A (en) * | 2010-08-20 | 2011-01-26 | 奇瑞汽车股份有限公司 | Cleaning solution level detection device |
| CN102183422A (en) * | 2011-03-15 | 2011-09-14 | 浙江大学 | Locking mechanism and impact tester device having locking mechanism |
| CN102183422B (en) * | 2011-03-15 | 2013-01-09 | 浙江大学 | Locking mechanism and impact tester device having locking mechanism |
| CN103474829A (en) * | 2013-09-13 | 2013-12-25 | 遵义市飞宇电子有限公司 | Sealing suspension connector |
| CN103474829B (en) * | 2013-09-13 | 2015-10-14 | 遵义市飞宇电子有限公司 | A kind of sealing suspension connector |
| CN108254042A (en) * | 2016-12-29 | 2018-07-06 | 中国科学院沈阳自动化研究所 | A kind of deep-sea liquid level detecting sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20130324 |