CN215575220U - Inner cone sealing sleeve for switch cabinet - Google Patents

Abstract

The utility model discloses an inner cone envelope for a switch cabinet, which has the technical scheme key points that: the utility model comprises a conductor, a supporting shell, an inner layer, an outer layer, a sealing layer, a taper sleeve insulating layer, a pressing plate, a fixing part, a shielding sleeve, a fixed base and a cable terminal.

Description

Inner cone sealing sleeve for switch cabinet

Technical Field

The utility model relates to the technical field of inner cone sleeves, in particular to an inner cone sleeve for a switch cabinet.

Background

At present, in the process of power frequency voltage withstand and lightning impulse voltage withstand test of gas insulated switchgear, a voltage withstand adapter is generally connected with an inner cone sleeve for test.

The present chinese utility model patent with publication number CN201548561U discloses a withstand voltage adapter for gas insulated switch, which comprises an outer cone head part at one end of the withstand voltage adapter and adapted to be connected with an inner cone sleeve, a hollow electric conductor, both ends of the electric conductor are provided with connecting threads, a metal press plate for fixing the adapter on the inner cone sleeve and grounding the outer surface of the insulator, and a voltage equalizing ball connected at one end of the electric conductor, when the adapter is used, the inner cone sleeve to be tested is connected at the outer cone head part of the withstand voltage adapter, the metal press plate is fixed with the inner cone sleeve to be tested through the connecting bolt and grounding the outer surface of the insulator, one end of the electric conductor near the outer cone head part is provided with an external screw stud, the external screw stud is connected with the conductive piece of the inner cone sleeve to realize the wire, high voltage is introduced into the switch device through the voltage equalizing ball, the power frequency withstand voltage, lightning impulse withstand voltage test and partial discharge test can be carried out on the gas insulated switchgear with the inner taper sleeve.

However, since the outer cone head of the voltage-resistant adapter is far away from the high-voltage input end, and the electric field generated inside the insulator is greatly influenced by factors such as the surrounding environment, the external magnetic field and the like in the process of the voltage-resistant adapter, the problems of real electric field conditions and actual partial discharge cannot be reflected if the voltage-resistant adapter is used for carrying out a partial discharge test, partial discharge and even breakdown phenomena are generated at the low-voltage end, and serious hidden troubles are buried in the safe operation of a power system.

SUMMERY OF THE UTILITY MODEL

In view of the problems mentioned in the background art, the present invention is to provide an inner cone envelope for a switch cabinet, so as to solve the problems that the existing device mentioned in the background art can not reflect the real electric field condition and the potential hazard exists in the operation of the actual partial discharge and low power system.

The utility model is realized by the following technical scheme:

the utility model provides an interior awl big envelope for cubical switchboard, electric conductor and supporting shell, the electric conductor is fixed to be set up in insulating shell, supporting shell includes inlayer and skin, form the sealing layer between inlayer and the skin, supporting shell's surface mounting is provided with the taper sleeve insulating layer, the fixed clamp plate that is provided with of medial surface of supporting shell bottom, the fixed both sides that set up at the electric conductor of clamp plate, the higher authority of clamp plate is all fixed and is provided with the mounting, the fixed shield cover that is provided with in side of mounting, the fixed unable adjustment base that is provided with of lateral surface of supporting shell bottom, the connecting hole has been seted up at the center of unable adjustment base bottom, the cable terminal is linked together through connecting hole and solid base, and communicate with electric conductor electric property.

Further, the sealing layer is filled with dry air.

By adopting the technical scheme, the air insulation performance is good, and the air cannot be polluted, more than 60% of the existing power distribution equipment in the power distribution industry depends on sf6 gas insulation, once the sf6 gas leaks, almost irreversible pollution is caused to the surrounding environment, and therefore the sf6 gas is replaced at random.

Further, the electric conductor sets up with the shield ring is coaxial, and the inserts includes the shield ring that the central axis extends along left and right sides direction.

Through adopting above-mentioned technical scheme, can shield the influence of withstand voltage adapter external magnetic field and electric field for the inside electric field of adapter can not receive the interference of external factors, and the electric field that the inside high tension electricity produced can be balanced to the shield ring simultaneously.

Furthermore, the taper sleeve insulating layer is integrally cast and molded by using a silicon rubber material.

Through adopting above-mentioned technical scheme, silicon rubber has fine oxidation resistance in the air, because the molecular structure of silica gel makes the silica gel sealing washer have fine gas permeability and have fine selectivity to gas, again because it is not poisonous tasteless, and electric insulating properties is good, and integrated into one piece structure does benefit to production.

Furthermore, a silver coating is fixedly arranged on the outer surface of the end part of the electric conductor.

By adopting the technical scheme, the conductivity of the conductor is further improved.

Furthermore, the shielding sleeve is made of conductive materials.

By adopting the technical scheme, the low-voltage end electric field distribution device has the characteristics of uniform electric field distribution, small local discharge amount and the like, has the function of acquiring the electrified indicating signal, and ensures the safe operation of the inner taper sleeve.

Furthermore, the cable terminal is connected with the fixed base in a plug-in mode.

By adopting the technical scheme, the connection between the two is simpler and more convenient, and the operation is convenient.

In summary, the utility model mainly has the following beneficial effects:

the utility model provides an interior awl big envelope for cubical switchboard, including inlayer and skin, form the sealing layer between inlayer and the skin, the fixed surface of support housing is provided with taper sleeve insulating layer, make the insulating effect of device obtain the reinforcing, the electric field of inside production receives surrounding environment, the influence of factors such as external magnetic field is less, shielding sleeve and unable adjustment base, it is even to make interior taper sleeve have low-voltage end department electric field distribution, characteristics such as partial discharge volume is little, have electrified pilot signal acquisition function, guarantee interior safe operation of taper sleeve, can reflect true electric field condition and actual partial discharge problem, the problem that there is the hidden danger in the operation that current device can not reflect out true electric field condition and actual partial discharge and low power system has effectively been solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. an electrical conductor; 2. a support housing; 201. an inner layer; 202. an outer layer; 203. a sealing layer; 3. A taper sleeve insulating layer; 4. pressing a plate; 5. a fixing member; 6. a shielding sleeve; 7. a fixed base; 8. a cable termination is provided.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

Example 1

Referring to fig. 1, an inner cone envelope for a switch cabinet, an electric conductor 1 and a support housing 2, the electric conductor 1 is fixedly arranged in the support housing 2, the support housing 2 comprises an inner layer 201 and an outer layer 202, a sealing layer 203 is formed between the inner layer 201 and the outer layer 202, a cone sleeve insulating layer 3 is fixedly arranged on the outer surface of the support housing, a pressing plate 4 is fixedly arranged on the inner side surface of the bottom of the support housing 2, the pressing plate 4 is fixedly arranged on both sides of the electric conductor 1, fixing parts 5 are fixedly arranged on the upper surfaces of the pressing plates 4, a shielding sleeve 6 is fixedly arranged on the side surface of each fixing part 5, a fixed base 7 is fixedly arranged on the outer side surface of the bottom of the support housing 2, a connecting hole is formed in the center of the bottom of the fixed base 7, a cable terminal 8 is communicated with the fixed base 7 through the connecting hole, and the cable terminal 8 is electrically communicated with the conductor 1, and the connecting blind hole is formed in the connecting hole, so that the connection between the cable terminal 8 and the fixed base 7 is simpler and more convenient.

Referring to fig. 1, the sealing layer 203 is filled with dry air, so that the air insulation performance is good, and no pollution is caused to the air, more than 60% of the existing power distribution equipment in the power distribution industry depends on sf6 gas insulation, once the sf6 gas leaks, almost irreversible pollution is caused to the surrounding environment, and therefore, the replacement of the sf6 gas is not easy.

Referring to fig. 1, the insert includes shielding ring 9 that the central axis extends along left and right directions, and shielding ring 9 and conductor 1 are coaxial, can shield the influence of withstand voltage adapter external magnetic field and electric field for the inside electric field of adapter can not receive the interference of external factors, and shielding ring 9 can equalize the electric field that inside high-tension electricity produced simultaneously.

Referring to fig. 1, the insulating layer 3 of the taper sleeve is integrally cast and molded by using a silicon rubber material, the silicon rubber has good oxidation resistance in the air, the molecular structure of the silicon rubber enables the silicon rubber sealing ring to have good air permeability and good selectivity to gas, and the electrical insulating property is good because the silicon rubber sealing ring is not poisonous and tasteless, and the integrally molded structure is beneficial to production.

Referring to fig. 1, a silver plating layer is fixedly disposed on an outer surface of an end portion of the electric conductor 1, so as to further improve the electric conductivity of the electric conductor 1.

Referring to fig. 1, the shielding sleeve 6 is made of conductive material, has the characteristics of uniform electric field distribution at the low-voltage end, small local discharge amount and the like, has a function of acquiring an electrified indicating signal, and ensures the safe operation of the inner taper sleeve.

Referring to fig. 1, the cable terminal 8 and the fixing base 7 are connected by a plug-in connection, so that the connection between the two is simpler and more convenient, and the operation is convenient.

To sum up, an interior awl big envelope for cubical switchboard, including inlayer 201 and outer 202, form sealing layer 203 between inlayer 201 and the outer 202, the external fixed surface of support shell is provided with awl sleeve insulating layer 3, make the insulating effect of device obtain the reinforcing, the electric field that produces inside receives the surrounding environment, the influence of factors such as external magnetic field is less, shield cover 6 and unable adjustment base 7, it is even to make interior awl sleeve have low voltage end department electric field distribution, characteristics such as the partial discharge volume is little, have electrified pilot signal collection function, guarantee interior safe operation of awl sleeve, can reflect real electric field condition and actual partial discharge problem, effectively solved current device and can not reflect the real electric field condition and the problem that there is the hidden danger in operation of actual partial discharge and low power system.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides an interior awl big envelope for cubical switchboard, includes electric conductor (1) and support shell (2), its characterized in that: the electric conductor (1) is fixedly arranged in the supporting shell (2), the supporting shell (2) comprises an inner layer (201) and an outer layer (202), a sealing layer (203) is formed between the inner layer (201) and the outer layer (202), a taper sleeve insulating layer (3) is fixedly arranged on the outer surface of the supporting shell (2), a pressing plate (4) is fixedly arranged on the inner side surface of the bottom of the supporting shell (2), the pressing plates (4) are fixedly arranged on two sides of the electric conductor (1), fixing pieces (5) are fixedly arranged on the pressing plates (4), shielding sleeves (6) are fixedly arranged on the side surfaces of the fixing pieces (5), a fixing base (7) is fixedly arranged on the outer side surface of the bottom of the supporting shell (2), and a connecting hole is formed in the center of the bottom of the fixing base (7); the cable terminal (8) is communicated with the fixed base (7) through the connecting hole and is electrically communicated with the conductor (1).

2. The inner cone envelope for a switchgear cabinet according to claim 1, wherein: the sealing layer (203) is filled with dry air.

3. The inner cone envelope for a switchgear cabinet according to claim 1, wherein: the electric conductor (1) and the shielding ring (9) are coaxially arranged, and the insert comprises the shielding ring (9) with a central axis extending along the left-right direction.

4. The inner cone envelope for a switchgear cabinet according to claim 1, wherein: the taper sleeve insulating layer (3) is integrally cast and molded by using a silicon rubber material.

5. The inner cone envelope for a switchgear cabinet according to claim 1, wherein: and a silver coating is fixedly arranged on the outer surface of the end part of the conductor (1).

6. The inner cone envelope for a switchgear cabinet according to claim 1, wherein: the shielding sleeve (6) is made of conductive materials.

7. The inner cone envelope for a switchgear cabinet according to claim 1, wherein: the cable terminal (8) is connected with the fixed base (7) in a plugging manner.

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