CN205981473U - Threaded cubical switchboard plum blossom contact temperature monitoring devices - Google Patents

Abstract

The utility model proposes a temperature monitoring device for the plum blossom contact of a switch cabinet with threads, which belongs to the field of electric equipment, and includes a columnar member with a hollow inner cavity, and the upper end surface and the lower end surface of the columnar member are provided with a through hole for the plum blossom contact to pass through. Holes, heat dissipation holes are arranged around the through hole, ribs are arranged on the edge of the through hole, grooves for placing pressing pieces are arranged on the ribs, and a passive temperature sensor is arranged in the hollow inner cavity. The accurate temperature of the plum-blossom contact is acquired by fixing the columnar member on the plum-blossom contact and placing the passive temperature sensor in the hollow cavity of the columnar member close to the surface of the plum-blossom contact.

Description

Temperature monitoring device for plum blossom contact of switchgear with thread

technical field

The utility model belongs to the field of electric equipment, in particular to a temperature monitoring device for a plum blossom contact of a switch cabinet with threads.

Background technique

The switch cabinet is a kind of electrical equipment. The outside line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instrumentation, automatic control, motor magnetic switch, various AC contactors, etc., some also have high-voltage room and low-voltage room switch cabinets, and high-voltage busbars.

In order to ensure the normal operation of the equipment installed in the switch cabinet, it is necessary to monitor the temperature in the switch cabinet through the temperature sensor at all times. If the temperature rises to a preset threshold, an alarm signal will be triggered. However, the current temperature sensor is practically bound on the copper bar in the switch cabinet with cable ties, and the temperature sensor is far away from the plum blossom contact that needs to be detected, so that the temperature sensor cannot obtain the accurate temperature of the plum blossom contact.

Utility model content

In order to solve the shortcomings and deficiencies in the prior art, the utility model provides a temperature monitoring device capable of obtaining the accurate temperature of the plum blossom contact.

In order to achieve the above-mentioned technical purpose, the utility model provides a temperature monitoring device for a plum blossom contact of a switch cabinet with threads, and the temperature monitoring device includes:

A columnar member with a hollow inner cavity. On the upper and lower surfaces of the columnar member, there are through holes for the plum blossom contacts to pass through. There are cooling holes around the through holes, and ribs are provided on the edges of the through holes. There is a groove on the rib for placing the pressing piece;

A passive temperature sensor attached to the surface of the plum blossom contact is arranged in the hollow cavity.

Wherein, the columnar member includes a first cover plate, a second cover plate and a cylindrical outer wall, and threads are provided on the inner surface of the cylindrical outer wall to facilitate screwing in of the first cover plate and the second cover plate.

Optionally, fixing holes are provided on the first cover plate and the second cover plate, and fixing pieces for relatively fixing the first cover plate and the second cover plate are installed in the fixing holes.

Optionally, the fixing member is a screw and a nut matched with the screw.

Optionally, the temperature detection device also includes:

A signal transmitting circuit electrically connected with the passive temperature sensor.

Optionally, in step 1, the plum blossom contacts are sequentially passed through the lower end surface and the upper end surface of the columnar member;

Step 2, insert the pressing piece into the groove to realize the tight fixation of the temperature monitoring device relative to the plum blossom contact;

Step 3, place the passive temperature sensor close to the surface of the plum-blossom contact, and obtain the temperature on the surface of the plum-blossom contact through the passive temperature sensor.

The beneficial effects brought by the technical solution provided by the utility model are:

The accurate temperature of the plum-blossom contact is obtained by fixing the columnar member on the plum-blossom contact, and placing the passive temperature sensor in the hollow cavity of the columnar member close to the surface of the plum-blossom contact.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is a perspective structure schematic diagram of a temperature monitoring device for a plum blossom contact of a switch cabinet with threads provided by the utility model.

detailed description

In order to make the structure and advantages of the utility model clearer, the structure of the utility model will be further described below in conjunction with the accompanying drawings.

Embodiment one

The utility model provides a temperature monitoring device for a plum blossom contact of a switch cabinet with threads, as shown in Figure 1, the temperature monitoring device includes:

A columnar member 1 with a hollow inner cavity is provided with a through hole 2 for the plum blossom contact to pass through on the upper and lower end surfaces of the columnar member 1, a cooling hole 3 is provided around the through hole 2, and a heat dissipation hole 3 is provided on the edge of the through hole 2. There are ribs 4, and grooves 5 for placing the pressing pieces are arranged on the ribs 4;

A passive temperature sensor 6 attached to the surface of the plum blossom contact is arranged in the hollow cavity.

In practice, the accurate temperature of the plum-blossom contact is obtained by fixing the columnar member on the plum-blossom contact and placing the passive temperature sensor 6 in the hollow cavity of the columnar member 1 close to the surface of the plum-blossom contact.

The temperature monitoring device for obtaining the surface temperature of the plum blossom contact, the main body is a columnar member 1, and a through hole 2 is provided on the upper end surface and the lower end surface of the columnar member 1, and the through hole 2 is convenient for the plum blossom contact to pass through, so that the columnar member 1 set on plum contact. A heat dissipation hole 3 is provided around the through hole 2, which is convenient for installing the temperature monitoring device on the plum blossom contact and preventing the plum blossom contact from being damaged due to heat dissipation.

Ribs 4 are provided on the edge of the through hole 2 to improve the strength of the contact parts between the upper end surface and the lower end surface and the plum blossom contact, so as to prevent cracks in the contact part with the plum blossom contact after repeated installations, resulting in the inability of the temperature detection device to be firm It is fixed on the plum-blossom contact, so that the passive temperature sensor 6 cannot cling to the surface of the plum-blossom contact to obtain an accurate temperature value.

A groove 5 is provided on the convex rib 4, and the groove 5 is used for inserting a pressing piece. The pressing piece is wedge-shaped, so that after the cylindrical member is set on the plum-shaped contact, the pressing piece is inserted into the groove 5, so that the cylindrical member can be more firmly fixed on the surface of the plum-shaped contact.

The passive temperature sensor 6 can complete the work of temperature detection without a battery, thereby avoiding the defect that the temperature cannot be obtained when the battery is replaced, and can also prevent the danger of explosion caused by using the battery in a high temperature environment in the switch cabinet. The passive temperature sensor 6 adopts surface acoustic wave (Surface Acoustic Wave, SAW) temperature sensing technology, which can solve the problem of high insulation level and high temperature resistance required for temperature measurement of power equipment.

In actual use, the reader sends out an electromagnetic scanning signal, and the passive temperature sensor 6 receives the electromagnetic scanning signal and converts it into an internally working surface acoustic wave by the interdigital transducer, and the surface acoustic wave is then converted by the interdigital transducer Returns to the reader as an electromagnetic wave signal. Since there is a linear relationship between the propagation characteristics of the surface acoustic wave and the temperature, the returned electromagnetic wave signal has temperature characteristics, so that the reader can give the electromagnetic wave signal to obtain temperature information.

Optionally, the columnar member 1 includes a first cover plate 11, a second cover plate 12 and a cylindrical outer wall 13, on the inner surface of the cylindrical outer wall 13 there is a into the thread.

In practice, in order to facilitate the disassembly and assembly of the columnar member 1 , the columnar member 1 is divided into three parts: the first cover plate 11 , the second cover plate 12 and the cylindrical outer wall 13 . A fixing hole 14 is provided on the first cover plate 11 and the second cover plate 12 , and a fixing member 15 for relatively fixing the first cover plate 11 and the second cover plate 12 is installed in the fixing hole 14 .

In actual use, first the first cover plate 11 and the second cover plate 12 are screwed in along the threads provided in the cylindrical outer wall 13, and then the first cover plate 11 and the second cover plate 11 are inserted into the first cover plate 11 and the second cover plate 12 through the fixing hole 14 using the fixing member 15. The two cover plates 12 are fixed, which can improve the overall strength of the columnar member 1, and can also form a stable hollow cavity between the first cover plate 11 and the second cover plate 12, which is convenient for placing the passive temperature sensor 6. In order to fix the first cover plate 11 and the second cover plate 12 conveniently, the fixing parts are screw rods and nuts matched with the screw rods.

The screw threads provided on the inner surface of the cylindrical outer wall 13 can fix the first cover plate 11 and the second cover plate 12 in the cylindrical outer wall 13, and with the assistance of the fixing member 15, the first cover plate 11 and the second cover plate 11 can be further fixed. The two cover plates 12 are fixed to prevent the deformation of the columnar member 1 caused by the relative displacement of the first cover plate 11 and the second cover plate 12 during the practical process, so that the passive temperature sensor 6 cannot be tightly attached to the surface of the static contact, so that The temperature of the surface of the static contact cannot be obtained accurately.

Optionally, the temperature detection device further includes: a signal transmitting circuit 7 electrically connected to the passive temperature sensor 6 .

In practice, in order to improve the ability of the passive temperature sensor 6 to return electromagnetic wave signals, an electrically connected signal transmitting circuit is also provided on the passive temperature sensor 6 .

In addition, the steps for using the threaded switchgear plum blossom contact temperature monitoring device are as follows:

Step 1, passing the plum blossom contacts through the lower end surface and the upper end surface of the columnar member in turn.

Step 2, insert the pressing piece into the groove to realize the tight fixing of the temperature monitoring device relative to the plum contact.

Step 3, place the passive temperature sensor close to the surface of the plum-blossom contact, and obtain the temperature on the surface of the plum-blossom contact through the passive temperature sensor.

The utility model proposes a temperature monitoring device for the torx contact of the switch cabinet with threads, which includes a columnar member with a hollow inner cavity, and a through hole for the torx contact to pass through is provided on the upper end surface and the lower end surface of the columnar member. Radiation holes are arranged around, ribs are arranged on the edge of the through hole, grooves for placing pressing sheets are arranged on the ribs, and a passive temperature sensor is arranged in the hollow inner cavity. The accurate temperature of the plum-blossom contact is acquired by fixing the columnar member on the plum-blossom contact and placing the passive temperature sensor in the hollow cavity of the columnar member close to the surface of the plum-blossom contact.

The serial numbers in the above embodiments are for description only, and do not represent the sequence of the components during assembly or use.

The above is only an embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the utility model. within the scope of protection.

Claims (4)

1. threaded switch cubicle Mume flower contact device for detecting temperature is it is characterised in that described device for detecting temperature, including：

There is the cylindrical component of hollow cavity, be provided with for leading to that Mume flower contact passes through in the upper surface of cylindrical component and lower surface Hole, is provided with louvre around through hole, is provided with convex tendon at the edge of through hole, is provided with for placing the recessed of compression piece on convex tendon Groove；

It is provided with the passive temperature sensor being attached to Mume flower contact surface in hollow cavity；

Wherein, described cylindrical component includes the first cover plate, the second cover plate and cylindrical outer wall, is provided with the inner surface of cylindrical outer wall For being easy to the screw thread of the first cover plate and the second cover plate screw-in.

2. threaded switch cubicle Mume flower contact device for detecting temperature according to claim 1 it is characterised in that：

First cover plate and the second cover plate are provided with fixing hole, are provided with fixing hole for by the first cover plate and the second cover plate Carry out relatively-stationary fixture.

3. threaded switch cubicle Mume flower contact device for detecting temperature according to claim 2 it is characterised in that：

Described fixture is screw rod and the nut mating with screw rod.

4. threaded switch cubicle Mume flower contact device for detecting temperature according to claim 1 is it is characterised in that described temperature Degree detection means also includes：

The signal transmission circuit electrically connecting with passive temperature sensor.