Three-wire system temperature measurement resistor butt joint device and butt joint method thereof

Abstract

The invention discloses a three-wire system temperature measurement resistor butt joint device and a butt joint method thereof, the three-wire system temperature measurement resistor butt joint device comprises a first butt joint platform and a second butt joint platform, the first butt joint platform is provided with three first fixing clamps along the longitudinal direction, and the three first fixing clamps are respectively used for clamping three leads on the same three-wire system temperature measurement resistor; the second butt joint platform is slidably connected to the first butt joint platform in the transverse direction, three second fixing clamps used for clamping three leads on the same cable respectively are arranged on the second butt joint platform, and the longitudinal positions and the vertical positions of the three second fixing clamps are matched with the longitudinal positions and the vertical positions of the three first fixing clamps respectively. According to the invention, when the second butt-joint platform transversely slides to the first butt-joint platform, the longitudinal positions and the vertical positions of the three-wire system temperature measurement resistor lead and the cable lead which are close to each other are also matched, so that the butt-joint accuracy of the three-wire system temperature measurement resistor and the cable can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of three-wire temperature measuring resistor docking, and in particular relates to a three-wire temperature measuring resistor docking device and a docking method thereof. Background Art

[0002] At present, in large hydropower stations, platinum resistance is often used to measure the temperature of the four bearings of the generator, air cooler, stator winding, iron core, tooth pressure plate and dry transformer winding. Compared with the two-wire platinum resistance, the three-wire platinum resistance can eliminate the influence of the resistance change of the connecting wire and has high measurement accuracy. Therefore, the three-wire platinum resistance is often used for temperature measurement in large hydropower stations; especially in the case of narrow temperature measurement range, long wire or large ambient temperature change, the performance of the three-wire platinum resistance is more superior.

[0003] In field applications, due to the influence of the length of the platinum resistor cable or the installation position, it is often necessary to dock the platinum resistor leads. In addition, due to the consideration of temperature measurement accuracy and maintenance costs, there are high requirements for the lead docking process and the reliability of the docking points. After long-term practice, heat shrink solder ring insulation sleeves are often used to replace the traditional cold-pressed nose docking in the docking process. This docking process uses heat shrink insulation sleeves to dock the platinum resistor leads, and then uses a hot air gun to heat and increase the temperature to shrink the heat shrink insulation sleeve and melt the hot melt adhesive and solder ring. Finally, the heat shrink insulation sleeve wraps the lead, and the solder is evenly integrated into the two wire cores, thereby achieving the docking purpose.

[0004] However, when using this docking process, the distance between the wire cores is close, which can easily lead to docking errors, and the space at the docking point is narrow, making it extremely inconvenient for two people to operate. In addition, there are many other cables at the docking point, and the hot air gun can easily cause adverse effects on other cables when heating. Summary of the invention

[0005] In order to overcome the defects of the prior art, the present invention provides a three-wire temperature measuring resistor docking device and a docking method thereof, which can improve the docking accuracy of the three-wire temperature measuring resistor and the cable.

[0006] The object of the present invention is achieved through the following technical solutions:

[0007] In a first aspect, a three-wire temperature measuring resistor docking device is provided, which includes a heat shrinkable solder ring insulating sleeve, the heat shrinkable solder ring insulating sleeve includes a heat shrinkable insulating sleeve and a solder ring arranged in the heat shrinkable insulating sleeve; the three-wire temperature measuring resistor docking device also includes:

[0008] A first docking platform, wherein three first fixing clamps are arranged longitudinally on the upper edge of the first docking platform and are respectively used to clamp three lead wires on the same three-wire temperature measuring resistor;

[0009] The second docking platform is connected to the first docking platform in a transverse sliding manner. The second docking platform is provided with three second fixing clamps respectively used for clamping three leads on the same cable. The longitudinal positions and vertical positions of the three second fixing clamps respectively match the longitudinal positions and vertical positions of the three first fixing clamps.

[0010] The beneficial effects of adopting the above technical solution are as follows: the three leads on the same three-wire temperature measuring resistor are fixed on the three first fixing clamps respectively, and the three leads on the same cable are fixed on the three second fixing clamps respectively, and because the longitudinal positions and vertical positions of the three second fixing clamps match the longitudinal positions and vertical positions of the three first fixing clamps respectively, when the second docking platform slides horizontally toward the first docking platform, the longitudinal positions and vertical positions of the three-wire temperature measuring resistor leads and the cable leads that are close to each other are also matched, which is conducive to improving the docking accuracy of the three-wire temperature measuring resistor and the cable; at the same time, the leads of the three-wire temperature measuring resistor and the cable are fixed by the three-wire temperature measuring resistor docking device, which is conducive to single-person operation, and thus is conducive to completing the docking of the three-wire temperature measuring resistor and the cable in a narrow space; in addition, the first docking platform and the second docking platform can block the waste heat generated by heating the heat shrink solder ring insulating sleeve to reduce the adverse effects on other cables during heating.

[0011] In one embodiment, a plurality of installation grooves for installing the second fixing clips are respectively arranged at different transverse positions on the second docking platform, and the installation grooves extend in the longitudinal direction.

[0012] The beneficial effect of adopting the above technical solution is: it is arranged in this way so that the lateral installation position of the second fixing clamp can be adjusted according to the stripped length of the cores of the three leads on the three-wire temperature measuring resistor, so as to facilitate the three cores of the cable to be close to the three cores of the three-wire temperature measuring resistor at the same time.

[0013] In one embodiment, a sliding groove is provided in the first docking platform, and one end of the second docking platform is slidably connected in the sliding groove.

[0014] The beneficial effect of adopting the above technical solution is that the first docking platform can rely on the sliding groove to play a longitudinal and vertical limiting role on the second docking platform, so that one end of the second docking platform can slide stably in the first docking platform.

[0015] In one embodiment, the first fixing clip is disposed at an end of the first docking platform away from the second docking platform, and the second fixing clip is disposed at an end of the second docking platform away from the first docking platform.

[0016] In a second aspect, a docking method for a three-wire temperature measuring resistor docking device is provided, which comprises the following steps:

[0017] Strip the cores of the three leads on the same three-wire temperature measuring resistor;

[0018] Strip the cores of the three leads on the same cable;

[0019] Fix the three-wire temperature measuring resistor lead wire and the cable lead wire of the same color on the first fixing clamp and the second fixing clamp at the same longitudinal and vertical positions, respectively, and make the wire core of the three-wire temperature measuring resistor face the wire core of the cable;

[0020] Slide the second docking platform so that the three wire cores of the same three-wire temperature measuring resistor are close to the three wire cores of the same cable respectively;

[0021] A heat shrink solder ring insulating sleeve is set on the end of the three-wire temperature measuring resistor lead wire and the cable lead wire of the same color that are close to each other;

[0022] The heat shrink solder ring insulating sleeve is heated to allow the three lead wires of the same three-wire temperature measuring resistor to be connected to the three lead wires of the same cable respectively.

[0023] The beneficial effects of adopting the above technical scheme are: the docking method can improve the docking accuracy of the three-wire temperature measuring resistor and the cable, which is beneficial to reduce the defect rate; the docking method can arbitrarily change the distance between the three-wire temperature measuring resistor core and the cable core to make the application range wider; the docking method fixes the leads of the three-wire temperature measuring resistor and the cable to facilitate operation, thereby facilitating operation in narrow spaces.

[0024] In one embodiment, stripping the cores of three leads on the same three-wire temperature measuring resistor includes:

[0025] The stripped lengths of the three leads on the same three-wire temperature measuring resistor are different.

[0026] The beneficial effects of adopting the above technical scheme are as follows: the core stripping lengths of the three leads on the same three-wire temperature measuring resistor are different, that is, the three connecting points where the three cores on the same three-wire temperature measuring resistor are connected to the three cores on the same cable are located at different lateral positions, which can avoid the loosening of the connecting points due to mutual squeezing at the same lateral position, and make the connecting point between the three-wire temperature measuring resistor and the cable smaller, which is conducive to saving space and making the appearance more beautiful.

[0027] In one embodiment, the docking method further comprises the following steps:

[0028] The three second fixing clips are respectively installed at three different lateral positions on the second docking platform.

[0029] The beneficial effect of adopting the above technical solution is: in this way, the different stripping lengths of the three cores on the same three-wire temperature measuring resistor can be adapted.

[0030] In one embodiment, sleeves of heat shrinkable solder ring insulating sleeves are provided on the ends of the three-wire temperature measuring resistor leads and cable leads of the same color that are close to each other, including:

[0031] The solder ring is simultaneously mounted on the wire core of the three-wire temperature measuring resistor and the wire core of the cable.

[0032] The beneficial effect of adopting the above technical solution is: such operation makes it easier for solder to be integrated into the wire core of the three-wire temperature measuring resistor and the wire core of the cable, thereby facilitating the butt connection effect.

[0033] In one embodiment, heating the heat shrinkable solder ring insulating sleeve includes:

[0034] Use a heat gun to heat the heat shrink solder ring insulation sleeve.

[0035] The beneficial effects of adopting the above technical solution are: the hot air gun can spray hot air more concentratedly to heat the heat shrink solder ring insulating sleeve, and the hot air flow direction can be conveniently controlled, thereby reducing the adverse effects on other cables during heating, and avoiding the temperature measurement results of other temperature measuring resistors being affected by heating other surrounding temperature measuring resistors.

[0036] In one embodiment, heating the heat shrinkable solder ring insulating sleeve using a hot air gun includes:

[0037] The hot air gun is directed toward the first docking platform or the second docking platform.

[0038] The beneficial effect of adopting the above technical solution is: in this way, the first docking platform and the second docking platform can block hot air, thereby further reducing the adverse effects on other cables or temperature measuring resistors caused by heating.

[0039] The beneficial effects of the present invention are:

[0040] The three leads on the same three-wire temperature measuring resistor are fixed on the three first fixing clamps respectively, and the three leads on the same cable are fixed on the three second fixing clamps respectively. Since the longitudinal positions and vertical positions of the three second fixing clamps match the longitudinal positions and vertical positions of the three first fixing clamps respectively, when the second docking platform slides horizontally toward the first docking platform, the longitudinal positions and vertical positions of the three-wire temperature measuring resistor leads and the cable leads that are close to each other are also matched, which is conducive to improving the docking accuracy of the three-wire temperature measuring resistor and the cable; at the same time, the leads of the three-wire temperature measuring resistor and the cable are fixed by the three-wire temperature measuring resistor docking device, which is conducive to single-person operation, and thus is conducive to completing the docking of the three-wire temperature measuring resistor and the cable in a narrow space; in addition, the first docking platform and the second docking platform can block the waste heat generated by heating the heat shrink solder ring insulating sleeve to reduce the adverse effects on other cables during heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0042] Figure 1 The schematic diagram of the structure of the three-wire temperature measuring resistor docking device in the present invention is shown;

[0043] Figure 2 The schematic diagram of the structure of the heat shrinkable solder ring insulating sleeve of the present invention is shown;

[0044] Figure 3 The schematic diagram of the structure of the three-wire temperature measuring resistor in the present invention is shown;

[0045] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0046] Reference numerals:

[0047] 1-first docking platform, 2-first fixing clip, 3-second docking platform, 4-second fixing clip, 5-installation slot, 6-heat shrink solder ring insulation sleeve, 601-heat shrink insulation sleeve, 602-solder ring, 7-three-wire temperature measuring resistor. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] The present invention provides a three-wire temperature measuring resistor docking device, such as Figure 1-3 As shown, it includes a heat shrinkable solder ring insulating sleeve 6, which includes a heat shrinkable insulating sleeve 601 and a solder ring 602 arranged in the heat shrinkable insulating sleeve 601; the three-wire temperature measuring resistor docking device also includes:

[0050] A first docking platform 1, on which three first fixing clamps 2 are arranged in the longitudinal direction for clamping three lead wires of the same three-wire temperature measuring resistor 7;

[0051] A second docking platform 3, the second docking platform 3 is slidably connected to the first docking platform 1 in a transverse direction, and three second fixing clamps 4 are respectively provided on the second docking platform 3 for clamping three leads on the same cable, and the longitudinal positions and vertical positions of the three second fixing clamps 4 are respectively matched with the longitudinal positions and vertical positions of the three first fixing clamps 2;

[0052] Wherein, a protective cover may be provided on the first fixing clip 2 and the second fixing clip 4 .

[0053] It can be understood that the three leads on the same three-wire temperature measuring resistor 7 are fixed on the three first fixing clamps 2 respectively, and the three leads on the same cable are fixed on the three second fixing clamps 4 respectively, and because the longitudinal positions and vertical positions of the three second fixing clamps 4 match the longitudinal positions and vertical positions of the three first fixing clamps 2 respectively, when the second docking platform 3 slides horizontally toward the first docking platform 1, the longitudinal positions and vertical positions of the leads of the three-wire temperature measuring resistor 7 and the cable leads that are close to each other are also matched, which is conducive to improving the docking accuracy of the three-wire temperature measuring resistor 7 and the cable; at the same time, the leads of the three-wire temperature measuring resistor 7 and the cable are fixed by the three-wire temperature measuring resistor docking device, which is conducive to single-person operation, and thus is conducive to completing the docking of the three-wire temperature measuring resistor 7 and the cable in a narrow space; in addition, the first docking platform 1 and the second docking platform 3 can block the waste heat generated by the heating heat shrink solder ring insulating sleeve 6 to reduce the adverse effects on other cables during heating.

[0054] In addition, the three-wire temperature measuring resistor docking device is also small in size, does not take up more installation space, does not increase too much cost, and has the advantages of simple structure, easy to carry, high reliability and good economy.

[0055] It should be noted that the first docking platform 1 and the second docking platform 3 are both resistant to high temperatures to facilitate the protection of other cables in the same place.

[0056] In one embodiment, a plurality of mounting grooves 5 for mounting the second fixing clips 4 are respectively arranged at different transverse positions on the second docking platform 3 , and the mounting grooves 5 extend in the longitudinal direction.

[0057] It is understandable that this arrangement is used to adjust the lateral installation position of the second fixing clamp 4 according to the stripped length of the three lead wires on the three-wire temperature measuring resistor 7, so as to facilitate the three cores of the cable to be close to the three cores of the three-wire temperature measuring resistor 7 at the same time.

[0058] In one embodiment, a sliding groove is provided in the first docking platform 1, and one end of the second docking platform 3 is slidably connected in the sliding groove.

[0059] It is understandable that the first docking platform 1 can rely on the sliding groove to limit the second docking platform 3 in the longitudinal and vertical directions, so that one end of the second docking platform 3 can slide stably in the first docking platform 1 .

[0060] In one embodiment, the first fixing clamp 2 is disposed at one end of the first docking platform 1 away from the second docking platform 3 , and the second fixing clamp 4 is disposed at one end of the second docking platform 3 away from the first docking platform 1 .

[0061] The present invention also provides a docking method for a three-wire temperature measuring resistor docking device, which comprises the following steps:

[0062] Strip the wire cores of the three leads of the same three-wire temperature measuring resistor 7;

[0063] Strip the cores of the three leads on the same cable;

[0064] Fix the lead wires of the three-wire temperature measuring resistor 7 and the lead wires of the cable of the same color on the first fixing clamp 2 and the second fixing clamp 4 at the same longitudinal and vertical positions, respectively, and make the core wires of the three-wire temperature measuring resistor 7 face the core wires of the cable;

[0065] Slide the second docking platform 3 so that the three cores of the same three-wire temperature measuring resistor 7 are respectively close to the three cores of the same cable until the distance between the upper core of the three-wire temperature measuring resistor 7 and the upper core of the cable is appropriate;

[0066] A heat shrink solder ring insulating sleeve 6 is sleeved on one end of the three-wire temperature measuring resistor 7 and the cable lead of the same color that are close to each other;

[0067] The heat shrink solder ring insulating sleeve 6 is heated so that the three lead wires of the same three-wire temperature measuring resistor 7 are respectively connected to the three lead wires of the same cable.

[0068] It can be understood that this docking method can improve the docking accuracy of the three-wire temperature measuring resistor 7 and the cable, which is beneficial to reduce the defect rate; this docking method can arbitrarily change the distance between the core of the three-wire temperature measuring resistor 7 and the core of the cable to make the application range wider; this docking method fixes the leads of the three-wire temperature measuring resistor 7 and the cable to facilitate operation, thereby facilitating operation in narrow spaces.

[0069] In one embodiment, stripping the cores of three leads on the same three-wire temperature measuring resistor 7 includes:

[0070] The core stripping lengths of the three leads on the same three-wire temperature measuring resistor 7 are different.

[0071] It can be understood that the wire core stripping lengths of the three lead wires on the same three-wire temperature measuring resistor 7 are different, that is, the three docking points where the three wire cores on the same three-wire temperature measuring resistor 7 are respectively docked with the three wire cores on the same cable are located at different lateral positions, which can avoid the docking points from becoming loose due to mutual squeezing at the same lateral position, and reduce the cross-sectional area of ​​the docking point between the three-wire temperature measuring resistor 7 and the cable, which is beneficial to saving space and making the appearance more beautiful.

[0072] In one embodiment, the docking method further comprises the following steps:

[0073] The three second fixing clips 4 are respectively installed at three different lateral positions on the second docking platform 3 .

[0074] It is understandable that this operation is performed to adapt to the different stripping lengths of the three wire cores on the same three-wire temperature measuring resistor 7.

[0075] In one embodiment, a heat shrinkable solder ring insulating sleeve 6 is sleeved on one end of the three-wire temperature measuring resistor 7 and the cable lead of the same color close to each other, including:

[0076] The solder ring 602 is simultaneously sleeved with the wire core of the three-wire temperature measuring resistor 7 and the wire core of the cable.

[0077] It can be understood that such operation facilitates the soldering to be integrated into the wire core of the three-wire temperature measuring resistor 7 and the wire core of the cable, thereby facilitating the butt jointing effect.

[0078] In one embodiment, heating the heat shrinkable solder ring insulating sleeve 6 includes:

[0079] Use a hot air gun to evenly heat the heat shrink solder ring insulation sleeve 6.

[0080] It can be understood that the hot air gun can spray hot air more concentratedly to heat the heat shrink solder ring insulating sleeve 6, and can easily control the flow direction of the hot air, thereby reducing the adverse effects on other cables during heating, and avoiding the temperature measurement results of other temperature measuring resistors being affected by heating other surrounding temperature measuring resistors.

[0081] In one embodiment, using a hot air gun to heat the heat shrinkable solder ring insulating sleeve 6 includes:

[0082] The hot air gun is directed toward the first docking platform 1 or the second docking platform 3 .

[0083] It is understandable that such operation enables both the first docking platform 1 and the second docking platform 3 to block hot air, thereby further reducing the adverse effects on other cables or temperature measuring resistors caused by heating.

[0084] In summary, the docking method can be applied to the four bearings, air coolers, stator windings, iron cores, tooth pressure plates and other positions of large hydropower stations, especially where the docking position is narrow or the cables are densely packed. At the same time, the three-wire temperature measuring resistor docking device is light in weight and small in size. Therefore, it is also very suitable when the three-wire temperature measuring resistor 7 is located at a high place and needs to be docked. In addition, when there are many resistors that need to be docked at the same time, the docking method can also ensure the docking accuracy, and it is effective when a large number of dockings are performed.

[0085] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0086] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A three-wire temperature measuring resistor docking device, comprising a heat shrinkable solder ring insulating sleeve (6), wherein the heat shrinkable solder ring insulating sleeve (6) comprises a heat shrinkable insulating sleeve (601) and a solder ring (602) arranged in the heat shrinkable insulating sleeve (601), characterized in that: include: A first docking platform (1), wherein three first fixing clamps (2) are arranged in the longitudinal direction on the first docking platform (1) and are respectively used to clamp three lead wires on the same three-wire temperature measuring resistor (7); A second docking platform (3), the second docking platform (3) is slidably connected to the first docking platform (1) in a transverse direction, and the second docking platform (3) is provided with three second fixing clamps (4) respectively used for clamping three lead wires on the same cable, and the longitudinal positions and vertical positions of the three second fixing clamps (4) respectively match the longitudinal positions and vertical positions of the three first fixing clamps (2).

2. The three-wire temperature measuring resistor docking device according to claim 1, characterized in that: A plurality of mounting grooves (5) for mounting the second fixing clips (4) are respectively arranged at different transverse positions on the second docking platform (3), and the mounting grooves (5) extend in the longitudinal direction.

3. The three-wire temperature measuring resistor docking device according to claim 1, characterized in that: A sliding groove is provided in the first docking platform (1), and one end of the second docking platform (3) is slidably connected in the sliding groove.

4. The three-wire temperature measuring resistor docking device according to claim 3, characterized in that: The first fixing clamp (2) is arranged at an end of the first docking platform (1) away from the second docking platform (3), and the second fixing clamp (4) is arranged at an end of the second docking platform (3) away from the first docking platform (1).

5. A docking method for a three-wire temperature measuring resistor docking device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Strip the wire cores of three leads on the same three-wire temperature measuring resistor (7); Strip the cores of the three leads on the same cable; The lead wires of the three-wire temperature measuring resistor (7) and the lead wires of the cable of the same color are respectively fixed on the first fixing clamp (2) and the second fixing clamp (4) which are at the same longitudinal position and vertical position, and the core wires of the three-wire temperature measuring resistor (7) are opposite to the core wires of the cable; Sliding the second docking platform (3) so that the three wire cores of the same three-wire temperature measuring resistor (7) are respectively close to the three wire cores of the same cable; A heat shrink solder ring insulating sleeve (6) is sleeved on one end of the three-wire temperature measuring resistor (7) lead wire and the cable lead wire of the same color close to each other; The heat shrink solder ring insulating sleeve (6) is heated so that three lead wires of the same three-wire temperature measuring resistor (7) are respectively connected to the three lead wires of the same cable.

6. The docking method according to claim 5, characterized in that: The method of stripping the cores of three leads on the same three-wire temperature measuring resistor (7) comprises: The core stripping lengths of three lead wires on the same three-wire temperature measuring resistor (7) are different.

7. The docking method according to claim 6, characterized in that: The following steps are also included: The three second fixing clamps (4) are respectively installed at three locations at different transverse positions on the second docking platform (3).

8. The docking method according to claim 5, characterized in that: The method of sleeve-mounting a heat shrinkable solder ring insulating sleeve (6) on one end of the three-wire temperature measuring resistor (7) lead wires and the cable lead wires of the same color close to each other comprises: The solder ring (602) is simultaneously sheathed with the wire core of the three-wire temperature measuring resistor (7) and the wire core of the cable.

9. The docking method according to claim 5, characterized in that: The step of heating the heat shrinkable solder ring insulating sleeve (6) comprises: Use a heat gun to heat the heat shrink solder ring insulation sleeve (6).

10. The docking method according to claim 9, characterized in that: The step of using a hot air gun to heat the heat shrinkable solder ring insulating sleeve (6) comprises: The hot air gun is directed toward the first docking platform (1) or the second docking platform (3).

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