阅读说明：本技术 一种抗磁场的防护型锰铜分流器及其工作方法 (Anti-magnetic field protective manganese copper shunt and working method thereof ) 是由 刘大兵 刘洋 李隐宪 于 2019-12-04 设计创作，主要内容包括：本发明公开了一种抗磁场的防护型锰铜分流器,包括：分流器本体、引线接口和抗磁外壳,所述分流器本体外侧包裹设置有抗磁外壳,所述分流器本体一侧连接设置有引线接口,所述引线接口穿出抗磁外壳；所述引线接口包括绝缘壳、连接块、连接通道、密封环和拧紧螺母；还公开了一种抗磁场的防护型锰铜分流器的工作方法；一方面抵抗了磁场对分流器的影响,提高了分流器的精度,另一方面增强了分流器与引线的连接牢固性,减少了松脱等现象的发生,同时提高了密封程度。(The invention discloses a protective manganin shunt for resisting a magnetic field, which comprises: the shunt comprises a shunt body, a lead interface and a diamagnetic shell, wherein the diamagnetic shell is wrapped outside the shunt body, one side of the shunt body is connected with the lead interface, and the lead interface penetrates out of the diamagnetic shell; the lead interface comprises an insulating shell, a connecting block, a connecting channel, a sealing ring and a tightening nut; also discloses a working method of the protective manganese-copper shunt resisting the magnetic field; on the one hand, the influence of a magnetic field on the shunt is resisted, the precision of the shunt is improved, on the other hand, the connection firmness of the shunt and a lead is enhanced, the phenomena of loosening and the like are reduced, and meanwhile, the sealing degree is improved.)

1. The utility model provides a protection type manganin shunt of diamagnetic field which characterized in that: the method comprises the following steps: the current divider comprises a current divider body (1), a lead interface (2) and a diamagnetic shell (3), wherein the diamagnetic shell (3) is wrapped outside the current divider body (1), the lead interface (2) is connected and arranged on one side of the current divider body (1), and the lead interface (2) penetrates out of the diamagnetic shell (3);

the lead interface (2) comprises an insulating shell (21), a connecting block (22), a connecting channel (23), a sealing ring (24) and a tightening nut (25), the insulation shell (21) is fixedly arranged on the shunt body (1), a connecting channel (23) is arranged in the insulation shell (21), the connecting channel (23) penetrates out of the insulating shell (21), the connecting channel (23) is hollow, one end of the connecting channel (23) close to the flow divider body (1) is provided with a connecting block (22), the connecting block (22) is connected with the diverter body (1), a threaded section is arranged at one end of the connecting channel (23) far away from the diverter body (1), a through groove is arranged on the thread section, a tightening nut (25) is arranged on the thread section, the tightening nut (25) is in threaded connection with the connecting channel (23), and the inner diameter of the tightening nut (25) is smaller than the outer diameter of the threaded section; one side of the connecting channel (23) far away from the shunt body (1) is provided with a sealing ring (24), the sealing ring (24) surrounds the thread section, and the sealing ring (24) is in contact with a screwing nut (25).

2. The protected manganin shunt resistant to magnetic fields according to claim 1, wherein: connecting channel (23) on be provided with protection nut (26), protection nut (26) parcel sets up in screwing up nut (25) outside, protection nut (26) internal surface and the cooperation of screwing up nut (25) surface, protection nut (26) and the nut (25) sliding contact of screwing up, connecting channel (23) are close to sealing ring (24) one end and are provided with the step shaft section, step shaft section surface and protection nut (26) internal surface cooperation.

3. The protected manganin shunt resistant to magnetic fields according to claim 1, wherein: the connecting block (22) comprises a contact plate (221) and a grid plate (222), the grid plate (222) is arranged on the outer side of the contact plate (221) in a surrounding mode, a plurality of meshes are arranged on the grid plate (222), and the grid plate (222) inclines to the side far away from the flow divider body (1).

4. The magnetic field resistant protective manganin shunt according to claim 3, wherein: the connecting block (22) further comprises a conducting sheet (223), a connecting part (224) and a friction block (225), a wedge-shaped groove is formed in the connecting channel (23), the friction block (225) is arranged in the wedge-shaped groove, the friction block (225) is matched with the wedge-shaped groove, and one end surface, far away from the wedge-shaped groove, of the friction block (225) adopts an arc surface; the friction block (225) one end is provided with connecting portion (224), connecting portion (224) are connected contact board (221), the contact board (221) outside is provided with conduction piece (223), conduction piece (223) set up on interface channel (23), contact board (221) and conduction piece (223) sliding connection, conduction piece (223) are connected shunt body (1).

5. The magnetic field resistant protective manganin shunt according to claim 4, wherein: friction block (225) one side be provided with reset spring (226), reset spring (226) set up in friction block (225) near one side of connecting portion (224), reset spring (226) one end is fixed in the wedge-shaped groove.

6. The protected manganin shunt resistant to magnetic fields according to claim 1, wherein: the inner surface of the sealing ring (24) is wave-shaped.

7. The protected manganin shunt resistant to magnetic fields according to claim 1, wherein: the insulating shell (21) is made of diamagnetic materials.

8. The working method of the protective manganin shunt resisting the magnetic field according to claim 1, comprising the steps of connecting and fastening, wherein the working method comprises the following steps: the method specifically comprises the following steps:

the method comprises the following steps: feeding the lead wire into the connecting passage (23) so that the lead wire contacts the connecting block (22);

step two: and (3) screwing the screwing nut (25), compressing the thread section of the connecting channel (23) and the sealing ring (24), and pressing the lead to fix.

9. The working method of the magnetic field resistant protective manganin shunt according to claim 4, comprising secondary fastening, wherein the working method comprises the following steps: the method specifically comprises the following steps:

the method comprises the following steps: the wire pressing contact plate (221), the contact plate (221) driving the friction block (225) to move;

step two: the friction block (225) contacts and presses the lead, and the lead directly drives the friction block (225) to continue moving until the friction block is fastened with the lead.

Technical Field

The invention belongs to the field of new material manufacturing, and particularly relates to a magnetic field resistant protective manganese copper shunt and a working method thereof.

Background

The manganin shunt is a current measuring element, has the characteristics of high precision, low temperature coefficient and the like, can be well suitable for high-precision production of modern industry, is an electronic component widely used at home and abroad, and has wide application field and great development potential.

However, as a novel material and specialization product, it is often applied to in various extreme environment, has also increased from this and has examined the quality of manganin shunt, and present manganin shunt can only be applicable to the scope that originally the shunt was suitable for mostly, and resistance to the extreme environment is still not strong, and product quality is poor, and simultaneously, present shunt all adopts the wiring mode of old-fashioned, appears the overlap joint insecure easily, takes off phenomenons such as pine. Therefore, the present application provides innovations and improvements in the manganin shunt in view of the above problems.

The existing manganin current divider mainly has the following problems:

1. most of the existing manganin shunts can only be suitable for the range of the original shunts, the resistance to the extreme environment is still weak, the magnetic field resistance cannot be realized, the work of the shunts is easily influenced, the precision becomes low, and the product quality is poor.

2. The existing manganin current divider mostly adopts the old wiring mode, easily appears the phenomenon such as the overlap joint insecure, pine take off, and the working effect is not good, short service life.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the magnetic field resistant protective manganese copper shunt and the working method thereof, on one hand, the influence of a magnetic field on the shunt is resisted, the precision of the shunt is improved, on the other hand, the connection firmness of the shunt and a lead is enhanced, the phenomena of loosening and the like are reduced, and meanwhile, the sealing degree is improved.

The technical scheme is as follows: in order to achieve the above object, the present invention provides a protection type manganin shunt against a magnetic field, comprising: the shunt comprises a shunt body, a lead interface and a diamagnetic shell, wherein the diamagnetic shell is wrapped outside the shunt body, one side of the shunt body is connected with the lead interface, and the lead interface penetrates out of the diamagnetic shell;

the lead interface comprises an insulating shell, a connecting block, a connecting channel, a sealing ring and a tightening nut, the insulating shell is fixedly arranged on the shunt body, the connecting channel is arranged in the insulating shell and penetrates out of the insulating shell, the connecting channel is hollow, the connecting block is arranged at one end, close to the shunt body, of the connecting channel, the connecting block is connected with the shunt body, a threaded section is arranged at one end, far away from the shunt body, of the connecting channel, a through groove is formed in the threaded section, the tightening nut is arranged on the threaded section, the tightening nut is connected with the connecting channel through threads, and the inner diameter of the tightening nut is smaller than the outer diameter of the threaded section; one side of the connecting channel, which is far away from the diverter body, is provided with a sealing ring, the sealing ring surrounds the thread section, and the nut is screwed by the contact of the sealing ring.

According to the invention, the shunt is arranged, on one hand, the influence of a magnetic field on the shunt is resisted through the diamagnetic shell, the precision of the shunt is improved, on the other hand, the connection firmness of the shunt and a lead is enhanced, the phenomena of loosening and the like are reduced, and meanwhile, the sealing degree is improved.

The connecting channel is provided with a protective nut, the protective nut is wrapped on the outer side of the tightening nut, the inner surface of the protective nut is matched with the outer surface of the tightening nut, the protective nut is in sliding contact with the tightening nut, one end of the connecting channel, which is close to the sealing ring, is provided with a stepped shaft section, and the outer surface of the stepped shaft section is matched with the inner surface of the protective nut.

The arrangement of the protective nut can avoid the phenomenon that the wiring is loosened due to mistaken touch of the rotating nut, and the working quality of the shunt is improved.

The connecting block comprises a contact plate and a grid plate, wherein the grid plate is arranged on the outer side of the contact plate in a surrounding mode, a plurality of meshes are arranged on the grid plate, and the grid plate inclines to one side far away from the flow divider body.

The grid plate is arranged, and the characteristic that the capture rate of the grid to the linear object is high is utilized, so that the direct contact area of the lead and the shunt is increased, and the probability of wire disconnection is reduced.

The connecting block further comprises a conducting sheet, a connecting part and a friction block, a wedge-shaped groove is formed in the connecting channel, the friction block is arranged in the wedge-shaped groove, the friction block is matched with the wedge-shaped groove, and the surface of one end, far away from the wedge-shaped groove, of the friction block is a cambered surface; the friction block one end is provided with connecting portion, connecting portion connect the contact plate, the contact plate outside is provided with the conduction piece, the conduction piece sets up on interface channel, contact plate and conduction piece sliding connection, the shunt body is connected to the conduction piece.

The friction block is arranged to provide secondary fixation, so that the lead and the shunt are improved

A reset spring is arranged on one side of the friction block, the reset spring is arranged on one side, close to the connecting portion, of the friction block, and one end of the reset spring is fixed in the wedge-shaped groove.

The reset spring is arranged, so that reset is realized, and the problem of blockage of a connecting channel is avoided.

The inner surface of the sealing ring is wavy.

The arrangement of the sealing ring reduces the pressure on the sealing ring during compression and also improves the degree of filling the gap by the sealing ring.

The insulating shell is made of diamagnetic materials.

The arrangement of the insulating shell improves the anti-magnetic capacity of the shunt.

The working method of the magnetic field resistant protective type manganin shunt comprises the following steps of connection and fastening:

the method comprises the following steps: feeding the lead into the connecting channel to make the lead contact with the connecting block;

step two: and screwing the nut tightly, compressing the thread section of the connecting channel and the sealing ring, and pressing the lead wire to achieve fixation.

The working method of the magnetic field resistant protective type manganin shunt comprises secondary fastening and specifically comprises the following steps:

the method comprises the following steps: the lead presses the contact plate, and the contact plate drives the friction block to move;

step two: the friction block contacts and presses the lead, and the lead directly drives the friction block to move continuously until the friction block is fastened with the lead.

The technical scheme shows that the invention has the following beneficial effects:

1. according to the anti-magnetic-field protective manganese copper shunt and the working method thereof, the influence of a magnetic field on the shunt is resisted through the anti-magnetic shell, and the precision of the shunt is improved.

2. According to the protective manganin shunt resistant to the magnetic field and the working method thereof, the characteristic that the capturing rate of the grid to the linear object is high is utilized, the direct contact area of the lead and the shunt is increased, and the probability of off-line is reduced.

3. According to the protective manganese copper shunt resistant to the magnetic field and the working method thereof, the tightening nut and the friction block are used for double fastening, so that the connection firmness of the shunt and the lead is enhanced, and the phenomena of loosening and the like are reduced.

Drawings

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

FIG. 2 is a schematic structural diagram of a lead interface according to the present invention;

FIG. 3 is a schematic view of the connecting block of the present invention;

FIG. 4 is another schematic structural view of the connecting block of the present invention;

in the figure: the current divider comprises a current divider body-1, a lead interface-2, an insulating shell-21, a connecting block-22, a contact plate-221, a grid plate-222, a conducting sheet-223, a connecting part-224, a friction block-225, a return spring-226, a connecting channel-23, a sealing ring-24, a tightening nut-25, a protective nut-26 and a diamagnetic shell-3.

Detailed Description

The invention is further elucidated with reference to the drawings and the embodiments.