阅读说明：本技术 一种带电流互感器的双密封低压套管 (Double-seal low-voltage sleeve with current transformer ) 是由 卢冬华 刘文娟 徐方 张晓东 于 2020-12-23 设计创作，主要内容包括：本发明涉及变压器检测技术领域,具体涉及一种带电流互感器的双密封低压套管。包括导电杆、第一绝缘体、第二绝缘体、电流互感器和接线铜掌,导电杆包括接线端、中间段和连接段,第一绝缘体、第二绝缘体和电流互感器均套设在中间段上,接线端和第一绝缘体置于变压器油箱内,第二绝缘体和电流互感器置于变压器油箱外,第一绝缘体和第二绝缘体夹持在变压器油箱上,第一绝缘体上与变压器油箱接触的一端设有第一密封圈,第二绝缘体上与变压器油箱接触的一端设有第二密封圈,且第二绝缘体与导电杆的接触端设有第三密封圈。本发明可以高效安装于变压器油箱上进行电流检测,并设置双密封结构,提高密封效果。(The invention relates to the technical field of transformer detection, in particular to a double-sealing low-voltage sleeve with a current transformer. Including the conducting rod, first insulator, the second insulator, current transformer and wiring copper palm, the conducting rod includes the wiring end, interlude and linkage segment, first insulator, second insulator and current transformer all overlap and establish on the interlude, wiring end and first insulator are arranged in the transformer tank, outside transformer tank was arranged in to second insulator and current transformer, first insulator and second insulator centre gripping were on transformer tank, the one end of last and transformer tank contact of first insulator is equipped with first sealing washer, the one end with transformer tank contact on the second insulator is equipped with the second sealing washer, and the second insulator is equipped with the third sealing washer with the contact jaw of conducting rod. The invention can be efficiently arranged on the transformer oil tank for current detection, and is provided with a double-sealing structure to improve the sealing effect.)

1. The utility model provides a take current transformer's double containment low pressure sleeve pipe which characterized in that: the transformer comprises a conducting rod (1), a first insulator (2), a second insulator (6), a current transformer (8) and a wiring copper palm (9), wherein the conducting rod (1) comprises a wiring end (11), an intermediate section (12) and a connecting section (13), the wiring end (11) and the connecting section (13) are respectively arranged at two ends of the intermediate section (12), the first insulator (2), the second insulator (6) and the current transformer (8) are all sleeved on the intermediate section (12), the wiring end (11) and the first insulator (2) are arranged in a transformer oil tank (4), the wiring end (11) is used for being connected with a down lead of a transformer, the second insulator (6) and the current transformer (8) are arranged outside the transformer oil tank (4), the first insulator (2) and the second insulator (6) are clamped on the transformer oil tank (4), a first sealing ring (3) is arranged at one end, contacted with the transformer oil tank (4), on the first insulator (2), a second sealing ring (5) is arranged at one end, in contact with the transformer oil tank (4), of the second insulator (6), a third sealing ring (7) is arranged at the contact end of the second insulator (6) and the conducting rod (1), and the wiring copper palm (9) is connected to the connecting section (13) of the conducting rod (1) and used for being connected with external electrical equipment.

2. The dual-sealed low-voltage bushing with current transformer according to claim 1, wherein: and a first wiring hole (14) is formed in the wiring end (11) of the conductive rod (1).

3. The dual-sealed low-voltage bushing with current transformer according to claim 1, wherein: the first insulator (2) is connected with the conducting rod (1) through epoxy resin pouring, the second insulator (6) is formed by pouring independently and is detachably connected with the middle section (12) of the conducting rod (1) and is sealed by the third sealing ring (7), the current transformer (8) is formed by pouring independently and is detachably connected with the middle section (12) of the conducting rod (1).

4. The dual-sealed low-voltage bushing with current transformer according to claim 1, wherein: the wiring copper palm (9) is detachably connected with the connecting section (13) of the conducting rod (1).

5. The dual-sealed low-voltage bushing with current transformer according to claim 4, wherein: wiring copper palm (9) are including sleeve pipe (91) and wiring board (95), be equipped with through-hole (92) in sleeve pipe (91), through-hole (92) inner wall is equipped with the internal thread, linkage segment (13) of conducting rod (1) are equipped with the external screw thread, and sleeve pipe (91) form threaded connection with linkage segment (13) of conducting rod (1), wiring board (95) are connected with sleeve pipe (91), are equipped with second wiring hole (96) that are used for connecting external electrical equipment on wiring board (95).

6. The dual-sealed low-voltage bushing with current transformer according to claim 4, wherein: wiring copper palm (9) are including sleeve pipe (91) and wiring board (95), sleeve pipe (91) side is slotted, and the position that lies in the gap both sides on the outer wall of sleeve pipe (91) is equipped with butt joint board (93), all is equipped with butt joint screw (94) on two butt joint boards (93), and butt joint screw (94) of both sides are just right each other, be equipped with through-hole (92) in sleeve pipe (91), sleeve pipe (91) are established on linkage segment (13) of conducting rod (1) through-hole (92), have twisted the bolt in butt joint screw (94) of two butt joint boards (93), fix sleeve pipe (91) on linkage segment (13) of conducting rod (1), wiring board (95) are connected with sleeve pipe (91), are equipped with second wiring hole (96) that are used for connecting external electrical equipment on wiring board (95).

7. The double-sealed low-voltage bushing with current transformer according to claim 5 or 6, wherein: the wiring board (95) and the sleeve (91) are integrally formed, and the axis of the through hole (92) is perpendicular to or parallel to the wiring board (95).

8. The double-sealed low-voltage bushing with current transformer according to claim 5 or 6, wherein: the wiring board (95) and the sleeve (91) are both made of red copper.

9. The dual-sealed low-voltage bushing with current transformer according to claim 1, wherein: the transformer oil tank is characterized in that a protruding end is arranged on the first insulator (2), a groove matched with the protruding end of the first insulator (2) is formed in the second insulator (6), the protruding end on the first insulator (2) is clamped on the transformer oil tank (4) and extends out of the transformer oil tank (4) to be inserted into the groove of the second insulator (6).

10. The dual-sealed low-voltage bushing with current transformer according to claim 1, wherein: and the first sealing ring (3), the second sealing ring (5) and the third sealing ring (7) are all oil-resistant rubber gaskets.

Technical Field

The invention relates to the technical field of mold production and processing, in particular to a double-seal low-voltage sleeve with a current transformer.

Background

A transformer is a stationary electrical device used to transform ac voltage, current and transmit ac power. The electric energy transmission is realized according to the principle of electromagnetic induction. Transformers can be classified into power transformers, test transformers, instrument transformers, and transformers for special purposes, in terms of their use: the power transformer is necessary equipment for power transmission and distribution and power consumer distribution; the device is used for carrying out voltage withstand (boosting) test on electrical equipment by the test transformer; the instrument transformer is used for electrical measurement and relay protection (PT, CT) of a power distribution system; the transformer for special purposes comprises a furnace transformer for smelting, an electric welding transformer, a rectifier transformer for electrolysis, a small-sized regulating transformer and the like. With the progress of the technology, a more intelligent transformer begins to appear, the intelligent transformer can know the running condition of the transformer in real time through software and a WeChat applet of a mobile phone or a PC (personal computer) end, and better data support is provided for preventing the transformer fault in advance for a user.

The intelligent transformer needs to collect the current on the low-voltage side of the transformer, so that a current transformer needs to be added at a low-voltage outlet sleeve. At present, the resin-poured dry-type low-voltage sleeve is not provided with a current transformer, the low-voltage current transformer can be additionally increased when the current of a low-voltage side is required to be collected, a transformer fixing plate is required to be specially arranged, the assembly difficulty can be increased inevitably, the size of the transformer is increased, and the cost is increased. In addition, the additionally-added current transformer is difficult to find the size capable of being matched with the low-voltage sleeve for installation, the transformer needs to be customized most of the time, and the cost is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a double-seal low-voltage sleeve with a current transformer, which can be efficiently arranged on a transformer oil tank for current detection during application, and is provided with a double-seal structure to improve the sealing effect.

The technical scheme adopted by the invention is as follows:

a double-sealing low-voltage sleeve with a current transformer comprises a conducting rod, a first insulator, a second insulator, the current transformer and a wiring copper palm, wherein the conducting rod comprises a wiring end, an intermediate section and a connecting section, the wiring end and the connecting section are respectively arranged at two ends of the intermediate section, the first insulator, the second insulator and the current transformer are all sleeved on the intermediate section, the wiring end and the first insulator are arranged in a transformer oil tank, the wiring end is used for being connected with a down lead of the transformer, the second insulator and the current transformer are arranged outside the transformer oil tank, the first insulator and the second insulator are clamped on the transformer oil tank, a first sealing ring is arranged at one end, contacted with the transformer oil tank, of the first insulator, a second sealing ring is arranged at one end, contacted with the transformer oil tank, of the second insulator and a contact end of the conducting rod, the connecting copper palm is connected on the connecting section of conducting rod for connecting external electrical equipment.

Based on above-mentioned technical content, through arranging the first insulator of one end in transformer tank, arrange the second insulator outside transformer tank in, first insulator and second insulator centre gripping are on transformer tank, through first sealing washer, the double-seal effect is realized to second sealing washer and third sealing washer, when improving sealed effect, be convenient for change sheathed tube damage part, the inside and outside that carries out transformer tank through conducting rod and wiring copper palm is electrically conductive, the convenient detection that directly carries out the electric current through the current transformer that establishes of cover on the conducting rod. The whole structure of the sleeve is simple, the installation is convenient, and the manufacturing and using costs are low.

In one possible design, the terminal of the conductive rod is provided with a first terminal hole.

In one possible design, the first insulator is connected with the conducting rod through epoxy resin pouring, the second insulator is molded by casting alone and is detachably connected with the middle section of the conducting rod, the third sealing ring is used for sealing, and the current transformer is molded by casting alone and is detachably connected with the middle section of the conducting rod.

In one possible design, the connecting copper palm is detachably connected with the connecting section of the conducting rod.

In a possible design, wiring copper palm includes sleeve pipe and wiring board, the intraductal through-hole that is equipped with of cover, through-hole inner wall are equipped with the internal thread, the linkage segment of conducting rod is equipped with the external screw thread, and the sleeve pipe forms threaded connection with the linkage segment of conducting rod, wiring board and bushing are equipped with the second wiring hole that is used for connecting outside electrical equipment on the wiring board.

In a possible design, wiring copper palm includes sleeve pipe and wiring board, the sleeve pipe side cracks, and the position that lies in the gap both sides on the sheathed tube outer wall is equipped with the butt joint board, all is equipped with the butt joint screw on two butt joint boards, and the butt joint screw of both sides is just right each other, the intraductal through-hole that is equipped with of cover, the sleeve pipe passes through the through-hole cover to be established on the linkage segment of conducting rod, and the butt joint screw of two butt joint boards is downthehole to be twisted there is the bolt, fixes the sleeve pipe on the linkage segment of conducting rod, wiring board and bushing are equipped with the second wiring hole that is used for connecting.

In one possible design, the terminal block is integrally formed with the bushing, and the axis of the through hole is perpendicular or parallel to the terminal block.

In one possible design, the terminal block and the bushing are both made of copper.

In one possible design, the first insulator is provided with a protruding end, the second insulator is provided with a groove matched with the protruding end of the first insulator, and the protruding end on the first insulator is clamped on the transformer oil tank, extends out of the transformer oil tank and is inserted into the groove of the second insulator.

In one possible design, the first seal ring, the second seal ring and the third seal ring are all oil-resistant rubber gaskets.

The invention has the beneficial effects that:

according to the invention, the first insulator at one end is arranged in the transformer oil tank, the second insulator is arranged outside the transformer oil tank, the first insulator and the second insulator are clamped on the transformer oil tank, the double sealing effect is realized through the first sealing ring, the second sealing ring and the third sealing ring, the damaged parts of the sleeve can be conveniently replaced while the sealing effect is improved, the internal and external electric conduction of the transformer oil tank is carried out through the conducting rod and the wiring copper palm, and the current transformer sleeved on the conducting rod can be used for conveniently and directly carrying out current detection. The whole structure of the sleeve is simple, the installation is convenient, and the manufacturing and using costs are low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a conductive rod;

FIG. 3 is a schematic structural view of a copper stud;

fig. 4 is a schematic view of the structure of the terminal.

In the figure: 1. a conductive rod; 11. a terminal; 12. a middle section; 13. a connecting section; 14. a first wiring hole; 2. a first insulator; 3. a first seal ring; 4. a transformer tank; 5. a second seal ring; 6. a second insulator; 7. a third seal ring; 8. a current transformer; 9. a copper palm for wiring; 91. a sleeve; 92. a through hole; 93. a butt plate; 94. butting screw holes; 95. a wiring board; 96. and a second wiring hole.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

It is to be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside", and the like, refer to an orientation or positional relationship that is conventionally used for placing the product of the present invention, or that is conventionally understood by those skilled in the art, and are used merely for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present invention.

It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.

Example 1:

the embodiment provides a double-sealing low-voltage bushing with a current transformer, as shown in fig. 1 to 2, comprising a conducting rod 1, a first insulator 2, a second insulator 6, a current transformer 8 and a wiring copper palm 9, wherein the conducting rod 1 comprises a wiring end 11, an intermediate section 12 and a connecting section 13, the wiring end 11 and the connecting section 13 are respectively arranged at two ends of the intermediate section 12, the first insulator 2, the second insulator 6 and the current transformer 8 are all sleeved on the intermediate section 12, the wiring end 11 and the first insulator 2 are arranged in a transformer oil tank 4, the wiring end 11 is used for being connected with a down lead of a transformer, the second insulator 6 and the current transformer 8 are arranged outside the transformer oil tank 4, the first insulator 2 and the second insulator 6 are clamped on the transformer oil tank 4, a first sealing ring 3 is arranged at one end of the first insulator 2, which is in contact with the transformer oil tank 4, a second sealing ring 5 is arranged at one end of the second insulator 6, which is in contact with the transformer oil tank 4, a third sealing ring 7 is arranged at the contact end of the second insulator 6 and the conducting rod 1, and the wiring copper palm 9 is connected to a connecting section 13 of the conducting rod 1 and used for connecting external electrical equipment.

During concrete implementation, can arrange the first insulator 2 of one end in transformer tank 4, arrange second insulator 6 outside transformer tank 4 in, first insulator 2 and the centre gripping of second insulator 6 are on transformer tank 4, through first sealing washer 3, double-sealing effect is realized to second sealing washer 5 and third sealing washer 7, when improving sealed effect, be convenient for change sheathed tube damage part, the inside and outside of carrying out transformer tank 4 is electrically conductive through conducting rod 1 and wiring copper palm 9, the detection of current is conveniently directly carried out through current transformer 8 of establishing on conducting rod 1 cover. The whole structure of the sleeve is simple, the installation is convenient, and the manufacturing and using costs are low.

Example 2:

as an optimization of the above embodiment, the wiring copper palm 9 is detachably connected with the connecting section 13 of the conducting rod 1, so as to facilitate assembly and disassembly. As shown in fig. 3, to realize the detachable connection, the design structure of the copper connecting palm 9 may include:

the wiring copper palm 9 includes sleeve pipe 91 and wiring board 95, be equipped with through-hole 92 in the sleeve pipe 91, the through-hole 92 inner wall is equipped with the internal thread, the linkage segment 13 of conducting rod 1 is equipped with the external screw thread, and sleeve pipe 91 forms threaded connection with the linkage segment 13 of conducting rod 1, wiring board 95 is connected with sleeve pipe 91, is equipped with the second wiring hole 96 that is used for connecting outside electrical equipment on wiring board 95.

Or wiring copper palm 9 includes sleeve pipe 91 and wiring board 95, sleeve pipe 91 side slits, and the position that lies in the gap both sides on the outer wall of sleeve pipe 91 is equipped with docking plate 93, all is equipped with butt joint screw 94 on two docking plate 93, and the butt joint screw 94 of both sides is just right each other, be equipped with through-hole 92 in the sleeve pipe 91, the sleeve pipe 91 overlaps through-hole 92 and establishes on conducting rod 1's linkage segment 13, has twisted the bolt in two docking plate 93's the butt joint screw 94, fixes sleeve pipe 91 on conducting rod 1's linkage segment 13, wiring board 95 is connected with sleeve pipe 91, is equipped with the second wiring hole 96 that is used for connecting external electrical equipment on wiring board 95.

The assembly and the dismantlement efficiency of wiring copper palm 9 and conducting rod 1 all can be improved to two kinds of modes, and increase wiring copper palm 9 and conducting rod 1 area of contact, improve current transmission's stability.

The terminal plate 95 is integrally formed with the bushing 91, and the axis of the through hole 92 is perpendicular or parallel to the terminal plate 95. The integrally formed wiring board 95 and the bushing 91 have higher structural stability, and the axis of the through hole 92 is perpendicular to or parallel to the wiring board 95, so that the connection of external electrical equipment is facilitated, and the perpendicular or parallel connection can be selected according to actual conditions, or other angles which are convenient to connect can be adopted.

The wiring board 95 and the bushing 91 are both made of red copper, the red copper has excellent conductivity, and the stability of current transmission can be ensured by making the wiring board 95 and the bushing 91 of red copper.

Example 3:

as an optimization of the above embodiment, as shown in fig. 4, the terminal 11 of the conductive rod 1 is provided with a first terminal hole 14. The terminal 11 can be connected to a down conductor of a transformer for electrical transmission through the first wiring hole 14 of the terminal 11. The first insulator 2 is connected with the conducting rod 1 through epoxy resin in a pouring mode, the sealing effect of connection can be improved through epoxy resin in a pouring mode, and meanwhile the insulating effect is achieved. The second insulator 6 is separately cast and molded, detachably connected with the middle section 12 of the conducting rod 1, sealed by the third sealing ring 7, and separately cast and molded by the current transformer 8, detachably connected with the middle section 12 of the conducting rod 1.

Example 4:

as an optimization of the above embodiment, the first insulator 2 is provided with a protruding end, the second insulator 6 is provided with a groove adapted to the protruding end of the first insulator 2, and the protruding end of the first insulator 2 is clamped on the transformer oil tank 4, extends out of the transformer oil tank 4, and is inserted into the groove of the second insulator 6. The protruding end of the first insulator 2 is arranged on the transformer oil tank 4 and inserted into the groove of the second insulator 6, so that a certain auxiliary sealing effect can be achieved, and oil in the transformer oil tank 4 is prevented from overflowing in a large amount.

The first sealing ring 3, the second sealing ring 5 and the third sealing ring 7 are all oil-resistant rubber gaskets, oil resistance can be improved by using the oil-resistant rubber gaskets, and a good sealing effect is achieved.

The present invention is not limited to the above-described alternative embodiments, and various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.