CN109374154B - Temperature warning mechanism - Google Patents
Temperature warning mechanism Download PDFInfo
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- CN109374154B CN109374154B CN201811429843.8A CN201811429843A CN109374154B CN 109374154 B CN109374154 B CN 109374154B CN 201811429843 A CN201811429843 A CN 201811429843A CN 109374154 B CN109374154 B CN 109374154B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/06—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using melting, freezing, or softening
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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Abstract
The invention provides a temperature warning mechanism, relates to the technical field of electrical temperature monitoring, and aims to solve the technical problem that the temperature monitoring of the existing power line splicing fitting is greatly influenced by the environment. The temperature warning mechanism comprises a connecting piece, an elastic piece and a first connecting piece; one end of the elastic piece is connected with the connecting piece; two ends of the first connecting piece are respectively connected with the end part of the elastic piece far away from the connecting piece and the connecting piece; the elastic element is in a compressed state; and at least one of the first connecting piece and the elastic piece and the first connecting piece and the connecting piece is welded by melting point definite value alloy. The temperature warning mechanism provided by the invention is directly connected to the power line splicing fitting, directly senses the temperature of the power line splicing fitting, and gives out a temperature alarm through the length change of the elastic piece, so that the temperature warning mechanism is slightly influenced by the environment, and the temperature of the power line splicing fitting can be monitored in various meteorological conditions.
Description
Technical Field
The invention relates to the technical field of electrical temperature monitoring, in particular to a temperature warning mechanism.
Background
When the power line is in operation, due to the reasons of construction process, atmospheric corrosion, vibration and the like, the joint of the splicing fitting is easy to generate abnormal temperature rise due to the rise of contact resistance caused by the loosening of bolts, insufficient contact pressure, oxidation corrosion of contact surfaces and the like. The long-term abnormal operation of temperature rise can cause the oxidation corrosion of the contact surface to be aggravated, the contact pressure can be further released after the temperature reaches the metal soft point, the contact resistance is rapidly increased, and finally the electrical connection point is ablated and burnt. The faults caused by the splicing fittings are not quick to repair, a large amount of time and labor cost are required to be invested for rush repair, and the long power failure time has great influence on the stability of a power grid and the social power utilization. Therefore, it is necessary to monitor the operating temperature of the power line connection fitting for a long time.
At present, the main method for monitoring the operating temperature of the splicing fitting of the power line is as follows: the infrared thermal imager is used for regularly measuring the temperature of the line, the line load is high, and the temperature is measured at night, but the temperature measurement of the infrared thermal imager is greatly influenced by the environment and cannot be carried out under various meteorological conditions.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a temperature warning mechanism to solve the technical problem that the temperature monitoring of the existing power line splicing fitting is greatly influenced by the environment.
In order to solve the above problems, the present invention provides the following technical solutions:
a temperature warning mechanism comprises a connecting piece, an elastic piece and a first connecting piece;
one end of the elastic piece is connected with the connecting piece;
two ends of the first connecting piece are respectively connected to the end part of the elastic piece far away from the connecting piece and the connecting piece;
the elastic piece is in a compressed state;
and at least one of the first connecting piece and the elastic piece and the first connecting piece and the connecting piece is welded by melting point-fixed alloy.
Further, in the present invention,
the temperature warning mechanism further comprises a positioning plate, and the positioning plate is connected to the end part, far away from the connecting piece, of the elastic piece;
the end part of the first connecting piece far away from the connecting piece is connected with the positioning plate.
Further, in the present invention,
the temperature warning mechanism comprises two first connecting pieces which are symmetrically arranged, wherein at least one end of each first connecting piece is welded through the same melting point constant value alloy.
Further, in the present invention,
the temperature warning mechanism further comprises a plurality of connecting piece groups, and each connecting piece group comprises a second connecting piece;
the lengths of the second connecting pieces in each connecting piece group are different, one end of each second connecting piece in each connecting piece group is connected with the connecting piece, the other end of each second connecting piece in each connecting piece group is connected with different positions of the elastic piece in the length direction, and at least one end of each second connecting piece in each connecting piece group is welded through different melting point fixed value alloys;
the melting point of the constant-melting-point alloy used for welding the second connecting piece is gradually reduced along with the increase of the length of the second connecting piece; the melting point of the melting point constant alloy used by the first connecting piece is smaller than that of the melting point constant alloy used by the second connecting piece.
Further, in the present invention,
each connecting piece group comprises two second connecting pieces which are symmetrically arranged;
the two second connecting pieces in the same connecting piece group are connected with the connecting piece at one end and the elastic piece at the same position in the length direction at the other end, and at least one end of each second connecting piece is welded through the same melting point constant value alloy.
Further, in the present invention,
the connecting piece with the locating plate all sets up to the annular, the axis of connecting piece with the axis coincidence of locating plate.
Further, in the present invention,
the connecting piece is set as a nut, and the inner diameter of the positioning plate is larger than that of the nut.
Further, in the present invention,
the connecting piece is set as a magnet, and the inner diameter of the positioning plate is larger than that of the magnet.
Further, in the present invention,
the elastic member includes a cylindrical spring extending along an axis of the connecting member.
Further, in the present invention,
the axis of the cylindrical spring is coincident with the axis of the connecting piece.
By combining the technical scheme, the beneficial effects brought by the invention are analyzed as follows:
the invention provides a temperature warning mechanism, which comprises a connecting piece, an elastic piece and a first connecting piece, wherein the connecting piece is arranged on the connecting piece; one end of the elastic piece is connected with the connecting piece; two ends of the first connecting piece are respectively connected with the end part of the elastic piece far away from the connecting piece and the connecting piece; the elastic element is in a compressed state; and at least one of the first connecting piece and the elastic piece and the first connecting piece and the connecting piece is welded by melting point definite value alloy.
According to the needs of the power line, a melting point constant alloy with a melting point value as a temperature value needing alarming is selected, the connecting piece of the temperature warning mechanism is connected to the power line connection fitting, when the temperature of the power line connection fitting reaches the melting point of the melting point constant alloy, the melting point constant alloy is liquefied, at least one end of the first connecting piece is disconnected, the elastic piece in a compressed state is released, and the length of the elastic piece is increased. The staff only needs to regularly observe the length of the elastic piece of the temperature warning mechanism to know whether the power line splicing fitting reaches the alarm temperature value.
Through connecting a plurality of this temperature warning mechanism on the electric power line gold utensil that continues, the melting point of the fusing point definite value alloy of every temperature warning mechanism is different, can report to the police to a plurality of temperature values that the electric power line continued the gold utensil, can also know the temperature interval that the electric power line continued the gold utensil and is located.
This temperature warning mechanism direct connection is to the electric power line gold utensil that continues, and the temperature that the electric power line continues the gold utensil is carried out temperature alarm through the length change of elastic component, makes this temperature warning mechanism receive environmental impact little, can monitor the temperature that the electric power line continues the gold utensil in various meteorological conditions.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a temperature warning mechanism according to a first embodiment of the present disclosure;
FIG. 2 is a schematic diagram of the temperature warning mechanism of FIG. 1 in alarm mode;
fig. 3 is a schematic structural diagram of a temperature warning mechanism according to a second embodiment of the present disclosure;
FIG. 4 is a schematic diagram of the temperature warning mechanism of FIG. 3 in a first alarm state;
FIG. 5 is a schematic diagram of the temperature warning mechanism of FIG. 3 in a second alarm state;
FIG. 6 is a schematic structural diagram of the temperature warning mechanism in FIG. 3 during a third alarm;
fig. 7 is a schematic structural diagram of a temperature warning mechanism according to a third embodiment of the present disclosure;
FIG. 8 is a schematic diagram of the temperature warning mechanism of FIG. 7 in alarm mode;
fig. 9 is a schematic structural diagram of a fourth implementation manner of a temperature warning mechanism according to an embodiment of the present disclosure;
FIG. 10 is a schematic diagram of the temperature warning mechanism of FIG. 9 in alarm mode;
fig. 11 is a schematic structural diagram of a temperature warning mechanism according to a fifth implementation manner of the embodiment of the present disclosure;
FIG. 12 is a schematic diagram of the temperature warning mechanism of FIG. 11 in alarm mode;
fig. 13 is a composition table of a melting point constant alloy having a partial melting point according to an example of the present invention.
Icon: 10-a connector; 11-a clamping seat; 12-a fastening bolt; 13-a fastening nut; 14-a contact base; 15-binding tapes; 20-an elastic member; 30-positioning plate; 40-a first connecting piece; 50-second connecting piece.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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.
The embodiments are described in detail below with reference to the attached drawing figures:
example 1
The present embodiment provides a temperature warning mechanism, please refer to fig. 1 to 13 in the drawings of the specification together.
As shown in fig. 1 to 8, the temperature warning mechanism includes a connecting member 10, an elastic member 20, and a first connecting piece 40; one end of the elastic member 20 is connected to the connection member 10; the two ends of the first connecting piece 40 are respectively connected with the end part of the elastic part 20 far away from the connecting part 10 and the connecting part 10; the elastic member 20 is in a compressed state; and at least one of the first connecting sheet 40 and the elastic piece 20 and the first connecting sheet 40 and the connecting piece 10 is welded by melting point-fixed alloy.
Specifically, the elastic member 20 has thermal conductivity; the first connecting piece 40 has three connection modes. The first connection mode of the first connecting piece 40 is that one end of the first connecting piece 40 is welded with the connecting piece 10 through a melting point constant value alloy, and the other end of the first connecting piece 40 is connected with the end part of the elastic piece 20 far away from the connecting piece 10 through a melting point constant value alloy without being welded through a melting point constant value alloy, and the first connecting piece is connected through spot welding, riveting and the like. The second connection mode of the first connecting piece 40 is that one end of the first connecting piece 40 is welded to the end of the elastic piece 20 far away from the connecting piece 10 through a melting point constant value alloy, and the other end of the first connecting piece 40 is connected to the connecting piece 10 through a connection mode such as spot welding and riveting without being welded through the melting point constant value alloy. A third connection mode of the first connecting piece 40 is that both ends of the first connecting piece 40 are respectively connected to the end of the elastic element 20 far away from the connecting element 10 and the connecting element 10 through melting point constant value alloy. The melting point constant value alloy can adopt a low melting point alloy melt material, and the composition table of partial melting points is shown in figure 13.
According to the needs of the power line, a melting point constant alloy with a melting point value as a temperature value needing alarming is selected, the connecting piece 10 of the temperature warning mechanism is connected to a power line connection fitting, when the temperature of the power line connection fitting reaches the melting point of the melting point constant alloy, the melting point constant alloy is liquefied, at least one end of the first connecting piece 40 is disconnected, the elastic piece 20 in a compressed state is released, and the length of the elastic piece 20 is increased. The staff only needs to regularly observe the length of the elastic part 20 of the temperature warning mechanism to know whether the power line splicing fitting reaches the alarm temperature value.
Through connecting a plurality of this temperature warning mechanism on the electric power line gold utensil that continues, the melting point of the fusing point definite value alloy of every temperature warning mechanism is different, can report to the police to a plurality of temperature values that the electric power line continued the gold utensil, can also know the temperature interval that the electric power line continued the gold utensil and is located.
This temperature warning mechanism direct connection is connected to the electric power line and continues the gold utensil on, and the temperature that the electric power line continues the gold utensil is carried out temperature alarm through the length change of elastic component 20, makes this temperature warning mechanism receive environmental impact little, can monitor the temperature that the electric power line continues the gold utensil in various meteorological conditions.
For example, by using a melting point constant alloy composed of 38% of Pb and 62% of Sn, when the temperature of the power line splicing fitting reaches 183 ℃, the melting point constant alloy liquefies, the first connecting piece 40 is disconnected, the compressed spring plate is released, the length of the spring plate is increased, and the operation and maintenance personnel can find the length change of the spring plate through naked eyes or a camera in the patrol process, so that the temperature of the splicing fitting exceeds the melting point temperature of the aluminum alloy of 180 ℃, the splicing fitting has an overhigh temperature, and the splicing fitting needs to be checked and replaced. The temperature warning mechanism with the melting point of 70 ℃ of the melting point constant value alloy can be further arranged on the splicing fitting, the melting point constant value alloy with the melting point of 70 ℃ comprises 50% Bi, 27% Pb, 13% Sn and 10% Cd, the temperature of 70 ℃ is the general temperature of the splicing fitting when a power line runs, if the splicing alloy reaches 70 ℃, the melting point constant value alloy with the temperature of 70 ℃ melts, the first connecting piece 40 is disconnected, the compressed elastic piece is released, the length of the elastic piece is increased, the running maintenance personnel find the temperature warning mechanism with the temperature of 70 ℃ to give an alarm through naked eyes or a camera, the temperature warning mechanism with the temperature of 183 ℃ does not give an alarm, and the splicing fitting can be preliminarily judged to be in a normal state.
Further, as shown in fig. 1 to 8, the temperature warning mechanism further includes a positioning plate 30, the positioning plate 30 is connected to an end of the elastic member 20 away from the connecting member 10; the end of the first link 40 remote from the connecting member 10 is connected to the positioning plate 30.
Specifically, the first link 40 is connected to the end of the elastic member 20 away from the connecting plate through the positioning plate 30, and the first link 40 applies pressure to the elastic member 20 through the positioning plate 30, so that the elastic member 20 is in a compressed state.
The operation maintenance personnel directly observe whether the length of the elastic part 20 is increased by naked eyes or a camera, so that the judgment is not easy to distinguish, and the possibility of error exists. The positioning plate 30 is arranged at the end part, far away from the connecting piece 10, of the elastic piece 20, so that observation of operation and maintenance personnel is facilitated, and the operation and maintenance personnel judge whether the length of the elastic piece 20 is increased or not by observing the distance between the positioning plate 30 and the connecting plate or the relative position between the positioning plate 30 and a continuous hardware fitting.
Further, as shown in fig. 1 and 2, the temperature warning mechanism includes two first connecting pieces 40 symmetrically disposed, and at least one end of each of the two first connecting pieces 40 is welded by the same melting point constant value alloy.
First even piece 40 that two symmetries set up makes elastic component 20 atress symmetry, when making elastic component 20 along the length direction of first even piece 40 compressed, avoid the bending to other directions, when the temperature that continues the gold utensil reaches the melting point of melting point definite value alloy, the first even piece 40 that two symmetries set up breaks off simultaneously, elastic component 20 releases along the length direction of first even piece 40, because do not bend to other directions, can reduce the swing of elastic component 20, reduce the vibration to the gold utensil that continues, also can prevent dropping of temperature warning mechanism.
Further, as shown in fig. 3 to 6, the temperature warning mechanism further includes a plurality of connecting pieces, each of which includes a second connecting piece 50; the lengths of the second connecting pieces 50 in each connecting piece group are different, one end of each second connecting piece 50 in each connecting piece group is connected with the connecting piece 10, the other end of each second connecting piece 50 in each connecting piece group is connected with different positions of the elastic piece 20 in the length direction, and at least one end of each second connecting piece 50 is welded through different melting point fixed value alloys; the melting point of the melting point constant value alloy used for welding the second connecting piece 50 is gradually reduced along with the increase of the length of the second connecting piece 50, and the melting point of the melting point constant value alloy used for the first connecting piece 40 is smaller than that of the melting point constant value alloy used for the second connecting piece 50.
Specifically, each second connecting piece 50 has three connecting manners. The first connection mode of the second connecting piece 50 is that one end of the second connecting piece 50 is welded with the connecting piece 10 through a melting point constant value alloy, and the other end is connected with the elastic piece 20 through spot welding, riveting and the like without being welded through the melting point constant value alloy. The second connecting means of the second connecting piece 50 is that one end of the second connecting piece 50 is welded to the elastic member 20 by the melting point constant value alloy, and the other end is connected to the connecting member 10 by spot welding, riveting or the like without being welded by the melting point constant value alloy. The third connection mode of the second connecting piece 50 is that two ends of the second connecting piece 50 are respectively welded with the elastic piece 20 and the connecting piece 10 through melting point definite value alloy.
Taking the specific structure of fig. 3 to 6 as an example, fig. 3 to 6 show that the temperature warning mechanism has a first connecting piece 40 and two connecting piece groups, wherein the lengths of the second connecting piece 50 in the two connecting piece groups are different, the melting point of the melting point constant alloy used for the first connecting piece 40 is smaller than that of the melting point constant alloy used for the second connecting piece 50, and the melting point of the melting point constant alloy used for the longer second connecting piece 50 is smaller than that of the melting point constant alloy used for the shorter second connecting piece 50. When the temperature of the continuous hardware is lower than the melting point of the melting point constant value alloy used by the first connecting piece 40, the whole length of the elastic piece 20 is compressed, and the length of the elastic piece 20 is the shortest as shown in fig. 3; when the connection fitting works, the temperature gradually rises, as shown in fig. 4, when the temperature of the connection fitting reaches the melting point of the constant melting point alloy used by the first connecting piece 40, the first connecting piece 40 is disconnected, the end part of the elastic piece 20 far away from the connecting piece 10 to the longer second connecting piece 50 is released between the connecting parts of the elastic piece 20, and the length of the elastic piece 20 is increased; as shown in fig. 5, when the temperature of the splicing fitting continues to rise to reach the melting point of the constant-melting-point alloy used for the longer second link 50, the longer second link 50 is disconnected, the longer second link 50 is released from the connection of the elastic member 20 to the connection of the shorter second link 50 between the connection of the elastic member 20, and the length of the elastic member 20 is further increased; as shown in fig. 6, when the temperature of the splice fitting continues to rise to the melting point of the constant-melting-point alloy used for the shorter second link 50, the shorter second link 50 is broken, the shorter second link 50 is released from the connection between the connection point of the elastic member 20 and the connection piece, and the length of the elastic member 20 is further released. Therefore, the temperature warning mechanism shown in fig. 3 to 6 can alarm the three temperatures of the splicing fitting, and the operation and maintenance personnel can know the temperature range of the splicing fitting only by observing the length of the elastic member 20, the distance between the connecting member 10 and the positioning plate 30 or the position of the positioning plate 30 relative to the splicing fitting.
Of course, the number of the connecting piece sets of the temperature warning mechanism is not limited in fig. 3 to 6, the number of the connecting piece sets may also be 1, 3, 4, and the like, and the number of the temperature values that the temperature warning mechanism can alarm is different according to the different number of the connecting piece sets.
Further, as shown in fig. 3 to 6, each of the connecting piece sets includes two symmetrically arranged second connecting pieces 50; one end of each of the two second connecting pieces 50 of the same connecting piece group is connected with the connecting piece 10, the other end of each of the two second connecting pieces is connected with the same position of the elastic piece 20 in the length direction, and at least one end of each of the two second connecting pieces is welded by the same melting point constant value alloy.
Every even piece group is including the second even piece 50 that two symmetries set up, every even piece group is symmetrical to the pressure that elastic component 20 applyed, make elastic component 20 when the length direction of second even piece 50 is compressed, avoid crooked to other directions, when the temperature that continues the gold utensil reaches the melting point of melting point definite value alloy, the second even piece 50 of two symmetry settings breaks off simultaneously, elastic component 20 releases along the length direction of second even piece 50, because there is not other directions crooked, can reduce the swing of elastic component 20, reduce the vibration to continuous gold utensil, also can prevent that warning mechanism from dropping.
Further, the connecting member 10 and the positioning plate 30 are both configured in a ring shape, and the axis of the connecting member 10 coincides with the axis of the positioning plate 30.
Specifically, the power line has various rod-shaped splicing fittings, such as bolts and screws. Set up connecting piece 10 and locating plate 30 into the annular and the axis coincidence of the axis of connecting piece 10 and locating plate 30, can allow connecting piece 10 and locating plate 30 suit to the rod-like gold utensil that continues, connecting piece 10 and locating plate 30 fully contact and be close to the gold utensil that continues, are favorable to continuing the heat transfer of gold utensil to this temperature warning mechanism's first even piece 40 and second even piece 50, increase this temperature warning mechanism's warning sensitivity.
Further, as shown in fig. 1 to 6, the connecting member 10 is provided as a nut, and the inner diameter of the positioning plate 30 is larger than that of the nut.
If the splicing fitting is a bolt, the connecting piece 10 is arranged as a nut, and the nut can be directly matched with the bolt and is used as a part of the splicing fitting, so that the nut is fully combined with the splicing fitting, the heat conduction from the splicing fitting to the temperature warning mechanism is facilitated, and the alarm sensitivity of the temperature warning mechanism is further improved. The internal diameter of locating plate 30 is greater than the internal diameter of nut, can allow the bolt to pass locating plate 30, makes this temperature warning mechanism install along the length direction of bolt, avoids the interference to the peripheral electric power system of gold utensil that continues when the length of elastic component 20 increases, and then prevents dangerous emergence such as short circuit.
Further, as shown in fig. 7 and 8, the coupling member 10 is provided as a magnet, and the inner diameter of the positioning plate 30 is larger than that of the magnet.
In particular, fig. 7 shows that the elastic member 20 is compressed when the temperature warning mechanism is in an unalarged state; fig. 8 shows that after the temperature warning mechanism alarms, the elastic member 20 is released and the length of the elastic member 20 is increased. Fig. 7 and 8 only show the structure of the temperature warning mechanism with the first connecting piece 40, which can alarm a temperature value; the temperature warning mechanism shown in fig. 7 and 8 may further have a connecting sheet set to alarm a plurality of temperature values.
Most rod-shaped connecting fittings are made of steel, and the connecting piece 10 is arranged to be a magnet, so that the connecting piece 10 can be attracted with the connecting fittings when being sleeved on the connecting fittings, and the temperature warning mechanism is prevented from falling off. The inner diameter of the positioning plate 30 is larger than that of the magnet, so that the rod-shaped splicing fitting can be allowed to pass through the positioning plate 30, the temperature warning mechanism is installed along the length direction of the rod-shaped splicing fitting, interference on a power system around the splicing fitting when the length of the elastic piece 20 is increased is avoided, and further dangers such as short circuit are prevented.
Further, as shown in fig. 1 to 8, the elastic member 20 includes a cylindrical spring extending along the axis of the connection member 10.
Further, as shown in fig. 1 to 8, the axis of the cylinder spring coincides with the axis of the connecting member 10.
The structure enables the distance between each part of the elastic piece 20 and the outer side surface of the splicing fitting to be the same, the heat radiation of the splicing fitting received by each part of the elastic piece 20 is the same, and the alarm accuracy is improved.
Of course, the elastic member 20 may be a conical spring, a concave spring, or the like, instead of the cylindrical spring.
Further, as shown in fig. 9 and 10, the connecting member 10 includes a clamping seat 11, a fastening bolt 12 and a fastening nut 13, the clamping seat 11 has a clamping opening, the fastening nut 13 is mounted on the fastening bolt 12, a threaded hole is formed in the clamping seat 11, and a front end of the fastening bolt 12 passes through the threaded hole and extends into the clamping opening.
In particular, fig. 9 shows that the elastic member 20 is compressed when the temperature warning mechanism is in an unalarged state; fig. 10 shows that after the temperature warning mechanism alarms, the elastic member 20 is released and the length of the elastic member 20 is increased. Fig. 9 and 10 only show the structure of the temperature warning mechanism with the first connecting piece 40, which can alarm a temperature value; the temperature warning mechanism shown in fig. 9 and 10 may further have a connecting sheet set to alarm a plurality of temperature values.
The splicing fitting without the bolt can adopt the temperature warning mechanism with the structure to clamp the clamping seat 11 on the splicing fitting, the splicing fitting is positioned in the clamping opening at the moment, the fastening bolt 12 is rotated to increase the length of the fastening bolt 12 extending into the clamping opening until the front end of the fastening bolt 12 abuts against the splicing fitting positioned in the clamping opening, and the splicing fitting is clamped and fixed by the clamping seat 11 and the fastening bolt 12. The fastening nut 13 rotatably mounted on the fastening bolt 12 is tightly abutted to the outer side of the clamping seat 11, so that the fastening bolt 12 can be prevented from loosening, and the temperature warning mechanism can be prevented from falling off from the splicing fitting.
Further, as shown in fig. 11 and 12, the connecting element 10 comprises a band 15 and a contact seat 14; the elastic element 20 is connected with the contact base 14, and the first connecting sheet 40 is connected with the contact base 14; both straps 15 are connected at one end to the contact base 14.
In particular, fig. 11 shows that the elastic member 20 is compressed when the temperature warning mechanism is in an unalarged state; fig. 12 shows that after the temperature warning mechanism alarms, the elastic member 20 is released and the length of the elastic member 20 is increased. Fig. 11 and 12 are schematic views showing only the structure of the temperature warning mechanism having the first connecting piece 40, which can alarm a temperature value; the temperature warning mechanism shown in fig. 11 and 12 may further have a connecting piece set to alarm a plurality of temperature values.
When the temperature warning mechanism is used, the contact base 14 is contacted with a splicing fitting, and the temperature warning mechanism is bound to the splicing fitting by using two binding belts 15.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A temperature warning mechanism is characterized by comprising a connecting piece (10), an elastic piece (20), a first connecting piece (40) and a plurality of connecting piece groups;
one end of the elastic piece (20) is connected with the connecting piece (10);
the two ends of the first connecting piece (40) are respectively connected to the end part of the elastic piece (20) far away from the connecting piece (10) and the connecting piece (10);
the elastic member (20) is in a compressed state;
at least one of the first connecting sheet (40) and the elastic piece (20) and the first connecting sheet (40) and the connecting piece (10) is welded by a melting-point-constant alloy;
each connecting piece group comprises a second connecting piece (50);
the lengths of the second connecting pieces (50) in each connecting piece group are different, one end of each second connecting piece (50) in each connecting piece group is connected with the connecting piece (10), the other end of each second connecting piece (50) in each connecting piece group is connected with different positions of the elastic piece (20) in the length direction, and at least one end of each second connecting piece (50) is welded through different melting point constant value alloys;
the melting point of the melting point constant value alloy used for welding the second connecting piece (50) is gradually reduced along with the increase of the length of the second connecting piece (50); the melting point of the melting point constant alloy used by the first connecting piece (40) is smaller than that of the melting point constant alloy used by the second connecting piece (50).
2. The temperature warning mechanism according to claim 1, further comprising a positioning plate (30), wherein the positioning plate (30) is connected to an end of the elastic member (20) far away from the connecting member (10);
the end part of the first connecting piece (40) far away from the connecting piece (10) is connected with the positioning plate (30).
3. The temperature warning mechanism according to claim 1, wherein each of the two sets of connecting pieces comprises two symmetrically arranged second connecting pieces (50);
one end of each of the second connecting pieces (50) of the same connecting piece group is connected with the connecting piece (10), the other end of each of the second connecting pieces is connected with the same position of the elastic piece (20) in the length direction, and at least one end of each of the second connecting pieces is welded through the same melting point constant value alloy.
4. The temperature warning mechanism according to claim 2, wherein the connecting member (10) and the positioning plate (30) are both provided in a ring shape, and an axis of the connecting member (10) coincides with an axis of the positioning plate (30).
5. The temperature warning mechanism according to claim 4, wherein the connecting member (10) is provided as a nut, and the positioning plate (30) has an inner diameter larger than that of the nut.
6. The temperature warning mechanism according to claim 4, wherein the connecting member (10) is provided as a magnet, and the inner diameter of the positioning plate (30) is larger than the inner diameter of the magnet.
7. The temperature warning mechanism according to claim 5 or 6, characterized in that the elastic member (20) comprises a cylindrical spring extending along the axis of the connecting member (10).
8. The temperature warning mechanism according to claim 7, characterized in that the axis of the cylindrical spring coincides with the axis of the connecting piece (10).
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| CN201811429843.8A CN109374154B (en) | 2018-11-26 | 2018-11-26 | Temperature warning mechanism |
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| CN109374154B true CN109374154B (en) | 2020-05-05 |
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| CN110594465A (en) * | 2019-10-16 | 2019-12-20 | 长沙鑫航机轮刹车有限公司 | Device with heat display and heat sensitive pressure relief functions |
| CN114508949A (en) * | 2022-01-24 | 2022-05-17 | 杨旭 | Calcining kiln of carrier boat with position indicating function |
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