CN210981418U - Wiring structure of sensor, sensor and liquid level meter - Google Patents

Abstract

The disclosure relates to a wiring structure of a sensor, the sensor and a liquid level meter. The wiring structure of sensor includes sensor cable and insulated conductor group, the sensor cable includes from interior to exterior cable core that the cover was established in proper order, the first insulating layer, first shielding layer, second insulating layer and restrictive coating, the cable core is provided with exposed cable core wiring end, first shielding layer is provided with exposed first shielding layer wiring end, the first insulating layer is provided with the first insulating layer section, cable core wiring end and first shielding layer wiring end are spaced apart through the first insulating layer section, insulated conductor group includes first insulated conductor and second insulated conductor, first insulated conductor is connected with cable core wiring end electricity, second insulated conductor is connected with first shielding layer wiring end electricity. The sensor cable is connected to the wiring terminal through the insulated wire in a switching mode, so that good insulation performance and good electrical reliability between the sensor cable and the wiring terminal can be guaranteed.

Description

Wiring structure of sensor, sensor and liquid level meter

Technical Field

The disclosure relates to the technical field of sensors, in particular to a wiring structure of a sensor, the sensor and a liquid level meter.

Background

In the prior art, the cable output of some sensors is directly connected to the terminal. And directly connecting the cable with other electrical components may have reliability risks such as short circuit or influence signal transmission of the sensor, and further influence the accuracy of sensor detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wiring structure of sensor can effectively reduce the short circuit risk when sensor cable is connected with other electrical components.

In order to realize the above-mentioned purpose, this disclosure provides a wiring structure of sensor, it includes sensor cable and insulating wire group, the sensor cable includes cable conductor, first insulating layer, first shielding layer, second insulating layer and the restrictive coating that from interior to exterior overlaps in proper order and establishes, the cable conductor is provided with exposed cable conductor wiring end, first shielding layer is provided with exposed first shielding layer wiring end, first insulating layer is provided with first insulating layer section, cable conductor wiring end with first shielding layer wiring end passes through first insulating layer section is spaced apart, insulating wire group includes first insulating wire and second insulating wire, first insulating wire with cable conductor wiring end electricity is connected, second insulating wire with first shielding layer wiring end electricity is connected.

Optionally, the wiring structure of sensor still includes first insulating sleeve and second insulating sleeve, first insulating sleeve cover is located first insulating layer section, cable core wiring end with being close to of first insulated conductor the one end of sensor cable is located in the first insulating sleeve, second insulating sleeve cover is located the tip of second insulating layer or the tip of restrictive coating, first insulating sleeve the first shielding layer wiring end with the one end that the second insulated conductor is close to the sensor cable is located in the second insulating sleeve.

Optionally, the sensor cable further comprises a second shielding layer, the second shielding layer is located between the second insulating layer and the sheath layer, the second shielding layer is provided with an exposed second shielding layer wiring end, the insulated conductor group further comprises a third insulated conductor, the third insulated conductor is electrically connected with the second shielding layer wiring end, the second insulating layer is provided with a second insulating layer section, and the first shielding layer wiring end and the second shielding layer wiring end are arranged at intervals.

Optionally, the wiring structure of sensor still includes third insulation support, the third insulation support cover is located the tip of restrictive coating, just cable conductor wiring end first shielding layer wiring end second shielding layer wiring end all is located in the third insulation support.

Optionally, the cable core terminal, the first insulating layer section, the first shielding layer terminal, the second insulating layer section, the second shielding layer terminal and the sheath layer are sequentially arranged in a stepped manner.

Optionally, a solder layer is disposed at a joint of the first insulated wire and the cable core terminal, and/or a solder layer is disposed at a joint of the second insulated wire and the first shielding layer terminal, and/or a solder layer is disposed at a joint of the third insulated wire and the second shielding layer terminal.

Optionally, the metal wire in the first insulated wire is spirally wound around the cable core terminal, and/or the metal wire of the second insulated wire is spirally wound around the first shielding layer terminal, and/or the metal wire of the third insulated wire is spirally wound around the second shielding layer terminal.

Optionally, both ends of the first insulating sleeve and the second insulating sleeve are open, the first insulating sleeve is in interference fit with the first insulating layer segment, and the second insulating sleeve is in interference fit with the second insulating layer.

According to another aspect of the present disclosure, there is provided a sensor including the wiring structure of the sensor described above.

According to another aspect of the present disclosure, a liquid level gauge is provided, comprising the sensor described above.

Through above-mentioned technical scheme, handle sensor cable's output, let cable core layer and first shielding layer expose to be connected rather than the electricity respectively through first insulated wire and second insulated wire, be connected first insulated wire and second insulated wire and binding post electricity again, thereby through insulated wire with sensor cable switching to binding post, can guarantee to have good insulating properties and electric reliability between sensor cable and the binding post like this.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic front view of a wiring structure of a sensor according to an embodiment of the present disclosure, in which an insulating sleeve and a wiring terminal are not shown;

FIG. 2 is a schematic cross-sectional view of a wiring structure of a sensor of one embodiment of the present disclosure, wherein the wiring terminals are not shown;

FIG. 3 is a schematic perspective view of a wiring structure of a sensor according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a fluid level gauge according to an embodiment of the present disclosure.

Description of the reference numerals

1-a gauge head of the liquid level meter; 3-sensor lead connections; 4-a guide hole; 5-a sensor; 10-a sensor cable; 11-cable core termination; 13-first shield layer termination; 12-a first insulating layer segment; 15-second shield layer termination; 16-a sheath layer; 14-a second insulation layer segment; 20-insulated wire group; 21-a first insulated wire; 22-a second insulated wire; 23-a third insulated wire; 31-a first insulating sleeve; 32-a second insulating sleeve; 33-a third insulating sleeve; 40-a wiring terminal; 51-a cable core; 52-a first insulating layer; 53-first shielding layer; 54-a second insulating layer; 55-second shielding layer.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of the directional terms "inside and outside" refers to the inside and outside of the profile of the relevant component, unless stated to the contrary. In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are for distinguishing one element from another, and have no order or importance.

As shown in fig. 1 to 3, according to one aspect of the present disclosure, there is provided a wiring structure of a sensor, which includes a sensor cable 10 and an insulated wire set 20. The sensor cable 10 is electrically connected to the connection terminal 40 through the insulated conductor set 20. The sensor cable 10 includes a cable core 51, a first insulating layer 52, a first shielding layer 53, a second insulating layer 54, and a sheath layer 16, which are sequentially sleeved from inside to outside. The cable core 51 is provided with an exposed cable core terminal 11, the first shielding layer 53 is provided with an exposed first shielding layer terminal 13, and the first insulating layer 52 is provided with a first insulating layer section 12. The cable core terminal 11 and the first shield layer terminal 13 are spaced apart by the first insulating layer segment 12, so that a short circuit between the exposed cable core 51 and the first shield layer 53 can be prevented. The insulated wire group 20 includes a first insulated wire 21 and a second insulated wire 22, the first insulated wire 21 being electrically connected to the cable core terminal 11, the second insulated wire 22 being electrically connected to the first shield layer terminal 13.

By "exposed" in this disclosure is meant not covered by other insulating, shielding, or jacketing layers 16.

In the above technical solution, the output end of the sensor cable 10 is processed to expose the cable core 51 layer and the first shielding layer 53, and the first insulating wire 21 and the second insulating wire 22 are respectively electrically connected to the first shielding layer and the second shielding layer, and then the first insulating wire 21 and the second insulating wire 22 are electrically connected to the connection terminal 40, so that the sensor cable 10 is connected to the connection terminal 40 through the insulating wires, and thus, the good insulating property and the good electrical reliability between the sensor cable 10 and the connection terminal 40 can be ensured.

In practice, the cable core 51 and the first shielding layer 53 may be exposed by peeling the sensor cable 10 to electrically connect them with the insulated wires, and a section of the first insulating layer 52 (i.e., the first insulating section 12) remains between the first shielding layer termination 13 and the cable core 51.

In order to further increase the insulation between the respective terminals, the wiring structure of the sensor further includes a first insulating sleeve 31 and a second insulating sleeve 32, as shown in fig. 2. The first insulating sleeve 31 is sleeved on the first insulating section 12, and the cable core terminal 11 and one end of the first insulating wire 21 close to the sensor cable 10 are positioned in the first insulating sleeve 31. The second insulating sleeve 32 is sleeved on the end of the second insulating layer 54 or the end of the sheath layer 16. Thus, the cable core terminal 11, the first insulated wire 21, the first insulating sleeve 31, the first shield layer terminal 13 and the end of the second insulated wire 22 near the sensor cable 10 are located inside the second insulating sleeve 32. In practical operation, the first insulating sleeve 31 may be first passed through the first insulating wire 21 and sleeved on the first insulating section 12, and then the second insulating sleeve 32 is passed through the first insulating sleeve 31, the first insulating wire 21 and the second insulating wire 22 and sleeved on the second insulating layer 54 or the sheath layer 16. Therefore, the joints between the insulated wires and the terminals can be protected through the sheaths between the terminals by the insulating sleeves, so that the connection is more reliable. And each output end of the sensor cable 10 can be isolated from each other, thereby increasing insulation between the respective terminals. Meanwhile, after the connecting part is covered, the appearance is good, and the use is more convenient.

In one embodiment of the present disclosure, as shown in fig. 2, the sensor cable 10 further includes a second shielding layer 55. Second shield layer 55 is located between second insulating layer 54 and jacket layer 16. The second shielding layer 55 is provided with an exposed second shielding layer terminal 15, and the insulated conductor set 20 further includes a third insulated conductor 23, and the third insulated conductor 23 is electrically connected to the second shielding layer terminal 15. The second insulating layer 54 is provided with the second insulating layer segments 14, and the first and second shield layer terminals 13 and 15 are spaced apart by the second insulating layer segments 14, so that short circuit between the exposed first and second shield layer terminals 13 and 15 can be prevented. The addition of the second shielding layer 55 can lead out the interference signal more smoothly, and improve the accuracy of signal transmission of the sensor cable 10.

Similarly, in operation, the second shield 55 may be exposed by stripping the sensor cable 10 to facilitate electrical connection with the insulated conductor, and a section of the second insulating layer 54 (i.e., the second insulating layer section 14) remains between the first shield layer terminal 13 and the second shield layer terminal 15.

In an embodiment of the present disclosure, the wiring structure of the sensor further includes a third insulating sleeve 33, the third insulating sleeve 33 is sleeved on the end portion of the sheath layer 16, and the cable core terminal 11, the first shielding layer terminal 13, and the second shielding layer terminal 15 are located in the third insulating sleeve 33. In this embodiment, the second insulating sleeve 32 is sleeved on the end of the second insulating layer 54, and the second insulating sleeve 32 is also located in the third insulating sleeve 33.

In practical operation, the first insulating sleeve 31 may be firstly sleeved on the first insulating section 12, then the second insulating sleeve 32 is sleeved on the second insulating layer 54, and finally the third insulating sleeve 33 is sleeved on the end of the sheath layer 16 through the second insulating sleeve 32 and the insulated wire group 20. Therefore, by adding a sheath of the third insulating sleeve 33 between each terminal, the connection between the insulated conductor and the terminal can be protected, so that the connection is more reliable. And can isolate each output of the sensor cable 10 from each other, increasing the insulation between the respective terminals.

In one embodiment of the present disclosure, as shown in fig. 1 and 2, the cable core terminal 11, the first insulating layer segment 12, the first shielding layer terminal 13, the second insulating layer segment 14, the second shielding layer terminal 15, and the sheath layer 16 are sequentially arranged in a step shape, and the diameter of the cable core terminal increases gradually from the cable core terminal 11 to the sheath layer 16 along the length direction of the sensor cable 10. This arrangement facilitates easy operation in stripping the sensor cable 10 and also facilitates connection between the respective terminals on the sensor cable 10 and the insulated conductors.

It will be appreciated that in other embodiments, the terminals may be arranged in other ways, for example, by interchanging the positions of the cable core terminals 11 and the first shield layer terminals 13 in the above-described embodiments, so that the first shield layer terminals 13 are located at the ends, so long as the terminals are exposed for electrical connection with the insulated conductors.

In one embodiment of the present disclosure, a solder layer is provided at the junction of the first insulated conductor 21 and the cable core terminal 11, and/or a solder layer is provided at the junction of the second insulated conductor 22 and the first shield layer terminal 13, and/or a solder layer is provided at the junction of the third insulated conductor 23 and the second shield layer terminal 15. The connection position of the insulated conducting wire and the corresponding terminal is subjected to tin soldering treatment, so that the connection reliability between the insulated conducting wire and the corresponding terminal is improved.

In one embodiment of the present disclosure, as shown in fig. 1 and 2, the metal wires in the first insulated wires 21 are spirally wound around the cable core terminal 11, and/or the metal wires of the second insulated wires 22 are spirally wound around the first shield layer terminal 13, and/or the metal wires of the third insulated wires 23 are spirally wound around the second shield layer terminal 15. The metal wire in the insulated wire is spirally wound on the corresponding wiring end, so that the reliability of connection between the metal wire and the insulated wire can be improved, and the signal transmission is facilitated.

Alternatively, the insulated conductor may be a single layer insulated conductor.

In one embodiment of the present disclosure, as shown in fig. 3, the wiring structure of the sensor further includes a wiring terminal 40, and an end of the insulated conductor set 20 away from the sensor cable 10 is electrically connected to the wiring terminal 40. Specifically, the first insulated wire 21, the second insulated wire 22, and the third insulated wire 23 are electrically connected to the connection terminals 40, respectively. By arranging the wiring terminal 40, the connection of the sensor and other electrical components is facilitated.

The specific structure of the insulating sleeve is not limited in this disclosure, and may be set as needed. In one embodiment, the first insulating sleeve 31 and the second insulating sleeve 32 are open at both ends, the first insulating sleeve 31 is interference fit with the first insulating layer section 12, and the second insulating sleeve 32 is interference fit with the second insulating layer 54. Third insulating sleeve 33 may also be open at both ends and have an interference fit with jacket layer 16. The insulating sleeve with the two open ends is convenient to operate when in use.

In other embodiments, an opening may be provided at one end of the insulating sleeve, the opening is sleeved at one end of the sensor cable 10, and an end cap having a through hole is provided at the other end, and the insulated wire passes through the through hole.

According to another aspect of the present disclosure, there is also provided a sensor including the wiring structure of the sensor described above. Due to the adoption of the wiring structure, signals in the sensor can be accurately transmitted, the interference of the signals is reduced, and the short circuit phenomenon can be avoided.

According to yet another aspect of the present disclosure, there is also provided a gauge comprising the sensor 5 described above. Optionally, the sensor 5 is a level measurement sensor. The liquid level meter mainly comprises a liquid level meter head 1, a sensor cable 10, a sensor lead connecting piece 3 and a liquid level measuring sensor. The surface of the liquid level measuring sensor is provided with a guide hole 4 for guiding air and liquid. The level measuring sensor is connected to a sensor cable 10 via a sensor lead connection 3. The sensor cable 10 is connected to the gauge head 1 via an insulated conductor 20 and a terminal 40.

The level gauge hangs down the installation through sensor cable 10 and makes level measurement sensor insert the container or measure a barrel head portion, and level measurement sensor and sensor cable 10 diameter are less to can be fine carry out temperature isolation to cryogenic liquids, thereby reduced the temperature loss of cryogenic liquids that causes because the increase of level gauge.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A wiring structure of a sensor is characterized by comprising a sensor cable (10) and an insulated conductor group (20), wherein the sensor cable (10) comprises a cable core (51), a first insulating layer (52), a first shielding layer (53), a second insulating layer (54) and a sheath layer (16) which are sequentially sleeved from inside to outside, the cable core (51) is provided with an exposed cable core wiring end (11), the first shielding layer (53) is provided with an exposed first shielding layer wiring end (13), the first insulating layer (52) is provided with a first insulating layer section (12), the cable core wiring end (11) and the first shielding layer wiring end (13) are spaced through the first insulating layer section (12),

the insulated conductor group (20) comprises a first insulated conductor (21) and a second insulated conductor (22), the first insulated conductor (21) is electrically connected with the cable core terminal (11), and the second insulated conductor (22) is electrically connected with the first shielding layer terminal (13).

2. The wiring structure of the sensor according to claim 1, characterized in that the wiring structure of the sensor further comprises a first insulating sleeve (31) and a second insulating sleeve (32), the first insulating sleeve (31) is sleeved on the first insulating layer section (12), the cable core terminal (11) and one end of the first insulating wire (21) near the sensor cable (10) are located in the first insulating sleeve (31), the second insulating sleeve (32) is sleeved on an end of the second insulating layer (54) or an end of the sheathing layer (16), and the first insulating sleeve (31), the first shielding layer terminal (13) and one end of the second insulating wire (22) near the sensor cable (10) are located in the second insulating sleeve (32).

3. The wiring structure of a sensor according to claim 1, wherein the sensor cable (10) further comprises a second shield layer (55), the second shield layer (55) being located between the second insulation layer (54) and the sheath layer (16), the second shield layer (55) being provided with a second shield layer termination (15) exposed, the insulated conductor set (20) further comprises a third insulated conductor (23), the third insulated conductor (23) being electrically connected with the second shield layer termination (15), the second insulation layer (54) being provided with a second insulation layer section (14), the first shield layer termination (13) and the second shield termination (15) being spaced apart by the second insulation layer section (14).

4. The wiring structure of the sensor according to claim 3, further comprising a third insulating sleeve (33), wherein the third insulating sleeve (33) is sleeved on an end portion of the sheath layer (16), and the cable core terminal (11), the first shielding layer terminal (13), and the second shielding layer terminal (15) are all located in the third insulating sleeve (33).

5. The wiring structure of a sensor according to claim 3, wherein the cable core terminal (11), the first insulating layer section (12), the first shield layer terminal (13), the second insulating layer section (14), the second shield layer terminal (15), and the sheath layer (16) are arranged in order in a stepped shape.

6. A wiring structure for a sensor according to claim 3, wherein a solder layer is provided at the junction of the first insulated conductor (21) and the cable core terminal (11), and/or a solder layer is provided at the junction of the second insulated conductor (22) and the first shield layer terminal (13), and/or a solder layer is provided at the junction of the third insulated conductor (23) and the second shield layer terminal (15).

7. The wiring structure of a sensor according to claim 3, wherein the metal wires in the first insulated wires (21) are spirally wound around the cable core terminal (11), and/or the metal wires of the second insulated wires (22) are spirally wound around the first shield layer terminal (13), and/or the metal wires of the third insulated wires (23) are spirally wound around the second shield layer terminal (15).

8. The wiring structure of the sensor according to claim 2, wherein the first insulating sleeve (31) and the second insulating sleeve (32) are open at both ends, the first insulating sleeve (31) is in interference fit with the first insulating layer segment (12), and the second insulating sleeve (32) is in interference fit with the second insulating layer (54).

9. A sensor comprising the wiring structure of the sensor of any one of claims 1-8.

10. A gauge comprising the sensor of claim 9.

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