CN218566715U - Electronic temperature sensor easy to replace - Google Patents

Abstract

The utility model relates to a temperature sensing technical field, concretely relates to electronic type temperature sensor who easily changes, including temperature detecting body, RTD temperature sensor and temperature transmitter, the temperature detecting body is installed in the fault location that easily generates heat of generator, the temperature detecting body passes through RTD temperature sensor and is connected with temperature transmitter; the temperature detection body includes locking mechanism, guiding tube and detection body, the detection body is located the inside of generator, the inside of the detection body be provided with external communicating inner cavity, the inner cavity of the detection body extends to the outside of the temperature detection body through the guiding tube and is connected with locking mechanism, compares with current electronic type temperature sensor, the utility model discloses a design can improve electronic type temperature sensor's whole change convenience, efficiency nature and practicality.

Description

Electronic temperature sensor easy to replace

Technical Field

The utility model relates to a temperature sensing technical field, concretely relates to electronic type temperature sensor who easily changes.

Background

The abnormal or rapid rise of the temperature is a main premonitory index for the abnormity of the generator and the occurrence of accidents, the accurate and real-time operation temperature information is vital to the safe production of the power station, and the service life and the maintenance frequency of the generator can be roughly evaluated by judging the operation temperature;

the existing temperature sensor of the generator is mounted by directly placing a detection point of the temperature sensor at a position to be detected, a temperature transmitter or a temperature demodulator is adopted at the rear end of the sensor to convert a temperature signal into a readable signal, the real-time temperature of each position is monitored in a local or background real-time display mode, the real-time operation state of the generator is judged according to the temperature change trend and the absolute temperature value, and then corresponding maintenance measures are adopted to ensure the long-term safe operation of the generator, the mode is an effective monitoring mode, but because the sensor is preset in the device, once the sensor is installed and replaced difficultly, even if the device is not put into operation, the damaged sensor replacement process is very troublesome in the post-production process, all peripheral components for fixing the temperature sensor need to be removed for replacement, for example, a stator bar is a temperature measuring bar which is arranged in an epoxy cushion bar, the temperature measurement of the corresponding position is completed by replacing the cushion bar with a temperature measuring function, if the replacement is needed, the generator almost needs to be completely removed, the replacement operation consumes time, and the temperature of the device can cause certain damage, therefore, a user generally selects the temperature monitoring position of the potential of the temperature sensor to be monitored in a very large temperature loss area, and the potential of the RTD is easy to be solved in more than 5 years.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic type temperature sensor who easily changes to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an electronic temperature sensor easy to replace comprises a temperature detection body, an RTD temperature sensor and a temperature transmitter, wherein the temperature detection body is arranged at a position where a generator is prone to generate heat and is connected with the temperature transmitter through the RTD temperature sensor;

the temperature detecting body comprises a locking mechanism, a guide pipe and a detecting body, the detecting body is positioned in the generator, an inner cavity communicated with the outside is formed in the detecting body, and the inner cavity of the detecting body extends to the outside of the temperature detecting body through the guide pipe and is connected with the locking mechanism;

the RTD temperature sensor comprises a temperature sensing probe body, a cable main body and a terminal connector, wherein the temperature sensing probe body is connected with the terminal connector through the cable main body, the temperature sensing probe body comprises a temperature sensing chip, an encapsulating material and a sealing layer, the cable main body comprises a transmission wire, a filling layer and a shielding layer, a metal wire is arranged inside the transmission wire, the temperature sensing chip is connected with the metal wire, the packaging material wraps the joint of the temperature sensing chip and the metal wire, the filling layer is arranged on the outer side of the transmission wire, the shielding layer is arranged on the outer side of the filling layer, and one side, close to the temperature sensing chip, of the guide pipe is sealed through the sealing layer.

As the utility model discloses preferred scheme, packaging material specifically is epoxy glue or the preparation of silica gel material, the filling layer specifically is the preparation of silica gel material.

As the utility model discloses preferred scheme, the outside of detecting the body is provided with the detection face.

As the utility model discloses preferred scheme, the sealing layer flushes with the shielding layer port, forms integral type seal structure.

As the utility model discloses preferred scheme, the outside of shielding layer is provided with the inoxidizing coating, the inoxidizing coating is hard material preparation.

As the utility model discloses preferred scheme, locking mechanism is supporting to be provided with detachable nut.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, through the design of the electronic temperature sensor which is easy to replace, when the RTD temperature sensor needs to be replaced, the detachable nut of the locking mechanism is taken down, the RTD temperature sensor inside is taken out to be replaced, the device does not need to be disassembled and replaced, the replacement is very convenient and fast, and the replacement efficiency is greatly improved;

combine encapsulating material and sealing layer, carry out fine sealing protection to temperature sensing chip and transmission wire, encapsulating material has that the adhesion is strong, the electrical property is excellent, insulating and the good material characteristic of heat conductivity, can carry out fine connection protection to temperature sensor's inside, form good fixed connection effect, the shielding layer in the filling layer outside is used for improving electromagnetic signal to the interference of sensor performance simultaneously, the filling layer has that the adhesion is strong, toughness is good, high temperature resistance's characteristic, can prevent to lead to when using to drop with RTD temperature sensor main part inner structure because of external environment factor or self structure influence.

Drawings

Fig. 1 is a schematic view of the overall structure of the temperature sensor of the present invention;

FIG. 2 is a schematic view of the main structure of the temperature sensor of the present invention;

FIG. 3 is a schematic view of a partial three-dimensional structure of the temperature sensor of the present invention;

FIG. 4 is a schematic view of the three-dimensional structure of the RTD temperature sensor of the present invention;

fig. 5 is a sectional view of the inner structure of the guide tube of the present invention.

In the figure: the temperature detection device comprises a temperature detector 1, a locking mechanism 11, a guide tube 12, a detection body 13, a detection surface 14, a RTD temperature sensor 2, a temperature sensing probe 21, a temperature sensing chip 211, a sealing layer 212, a packaging material 213, a cable main body 22, a transmission lead 221, a metal lead 2211, a filling layer 222, a shielding layer 223, a terminal connector 23 and a temperature transmitter 3.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the scope of protection of the present invention.

In order to facilitate understanding of the invention, a number of embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the invention may be embodied in many different forms and is not limited to the embodiments described herein, but rather these embodiments are provided so as to render the disclosure more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example (b):

referring to fig. 1-3, the present invention provides a technical solution:

an electronic temperature sensor easy to replace comprises a temperature detector 1, an RTD temperature sensor 2 and a temperature transmitter 3, wherein the temperature detector 1 is installed at a position of a generator fault prone to heating, and the temperature detector 1 is connected with the temperature transmitter 3 through the RTD temperature sensor 2;

the temperature detector 1 comprises a locking mechanism 11, a guide pipe 12 and a detector 13, the detector 13 is positioned in the generator, an inner cavity communicated with the outside is formed in the detector 13, and the inner cavity of the detector 13 extends to the outside of the temperature detector 1 through the guide pipe 12 and is connected with the locking mechanism 11;

the RTD temperature sensor 2 includes a temperature sensing probe 21, a cable body 22 and a terminal connector 23, the temperature sensing probe 21 is connected with the terminal connector 23 through the cable body 22, the temperature sensing probe 21 includes a temperature sensing chip 211, an encapsulating material 213 and a sealing layer 212, the cable body 22 includes a transmission lead 221, a filling layer 222 and a shielding layer 223, a metal lead 2211 is disposed inside the transmission lead 221, the temperature sensing chip 211 is connected with the metal lead 2211, the packaging material 213 is wrapped at the joint of the temperature sensing chip 211 and the metal lead 2211, the filling layer 222 is disposed outside the transmission lead 221, the shielding layer 223 is disposed outside the filling layer 222, and one side of the guide tube 12 close to the temperature sensing chip 211 is sealed through the sealing layer 212.

In this embodiment, the implementation scenario specifically includes: when the temperature detection device is in actual use, the temperature detection body 1 is installed at the heating position of the generator, then the temperature transmitter 3 is connected with corresponding equipment, the RTD temperature sensor 2 can monitor the heating position of the generator in real time, temperature signals are converted into analog signals through the temperature transmitter 3 and transmitted to the corresponding equipment, when the electronic temperature sensor breaks down, only the nut of the locking mechanism 11 needs to be unscrewed, then the RTD temperature sensor 2 in the electronic temperature sensor can be taken out for replacement, the replacement steps are very convenient and fast, the whole equipment does not need to be disassembled, the replacement convenience is increased, the replacement efficiency is improved compared with the existing sensor, the whole operation flow is simple and convenient, and compared with the existing electronic temperature sensor, the utility model discloses a design can improve the whole replacement convenience, efficiency and practicability of the electronic temperature sensor;

further, please refer to fig. 1-5, in this embodiment, the temperature sensing probe 21 of the RTD temperature sensor 2 is placed into the detection surface 14 of the temperature detector 1, the end locking mechanism 11 of the temperature detector 1 fixes the cable main body 22 of the RTD temperature sensor 2, the terminal connector 23 of the RTD temperature sensor 2 is connected to the temperature transmitter 3, the temperature transmitter 3 is used to convert the temperature signal of the RTD temperature sensor 2 into a digital or analog signal which can be displayed or stored, when the RTD temperature sensor 2 needs to be replaced, only the locking mechanism 11 needs to be unscrewed, the RTD temperature sensor 2 is drawn out from the temperature detector 1 for replacement, and the purpose of replacing the RTD temperature sensor 2 without disassembling the device replacement temperature detector 1 is indirectly achieved;

further, as shown in fig. 2 and fig. 3, in the present embodiment, the temperature detecting body 1 includes a locking mechanism 11, a guiding pipe 12 and a detecting body 13, an internal cavity communicated with the outside is formed inside the detecting body 13, and when the detecting body 13 is installed inside the generator, a top end 14 of the internal cavity is at the same position as a point to be measured of the object to be measured; the inner cavity of the detection body 13 can extend to the outside of the detection body 1 through the guide pipe 12, the top end of the guide pipe 12 is provided with a locking mechanism 11, the locking mechanism 11 is used for locking and releasing the guide pipe 12 and the temperature sensor main body 2, and when the temperature sensor 2 breaks down or needs spot detection, the temperature detection body 1 can be taken out without disassembling equipment to complete replacement of the RTD temperature sensor 2;

further, as shown in fig. 4 and 5, in the present embodiment, the temperature sensor 2 includes a temperature sensing probe 21, a cable main body 22 and a terminal connector 23, the temperature sensing probe 21 includes a temperature sensing chip 211, an encapsulating material 213 and a sealing layer 212, the cable main body 22 includes a transmission wire 221, a filling layer 222 and a shielding layer 223; in the process of forming the inside of the temperature sensing probe 21, the temperature sensing chip 211 is fixedly connected with the metal lead 2211 of the transmission lead 221, in order to prevent the temperature sensing chip 211 and the metal lead 2211 from falling off when the temperature sensing chip is fixedly connected and a short circuit is formed between two pins of the temperature sensing chip 211 due to an excessive instantaneous voltage, the temperature sensing chip 211 and the connected metal lead 2211 are wrapped by the packaging material 213 which has strong adhesion, excellent electrical performance, and good insulation and thermal conductivity, so that a good fixed connection effect is formed, the packaging material 213 is preferably epoxy glue or silica gel, the shielding layer 223 is arranged on the outer side of the filling layer 222 and used for improving the interference of electromagnetic models on the performance of the sensor, the transmission lead 221 is wrapped on the inner side, meanwhile, the sealing layer 212 seals the temperature sensing chip 211 wrapped by the packaging material 213 inside the top end of the shielding layer 223, the sealing layer 212 is flush with the port of the shielding layer 223, so that an integrated sealing structure is formed, the filling layer 222 is preferably made of silica gel, and has strong adhesion, good toughness and high temperature resistance, and can prevent the temperature sensing chip 211 from being damaged by the external environmental factors or the external structure when the sensor penetrates through, and the shielding layer 223 can protect the probe 21 from being damaged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an electronic type temperature sensor who easily changes, includes temperature probe (1), RTD temperature sensor (2) and temperature transmitter (3), its characterized in that: the temperature detector (1) is arranged at a position where a generator is prone to heating faults, and the temperature detector (1) is connected with the temperature transmitter (3) through the RTD temperature sensor (2);

the temperature detecting body (1) comprises a locking mechanism (11), a guide pipe (12) and a detecting body (13), the detecting body (13) is positioned in the generator, an inner cavity communicated with the outside is formed in the detecting body (13), and the inner cavity of the detecting body (13) extends to the outside of the temperature detecting body (1) through the guide pipe (12) to be connected with the locking mechanism (11);

the RTD temperature sensor (2) comprises a temperature sensing probe (21), a cable body (22) and a terminal connector (23), the temperature sensing probe (21) is connected with the terminal connector (23) through the cable body (22), the temperature sensing probe (21) comprises a temperature sensing chip (211), an encapsulating material (213) and a sealing layer (212), the cable body (22) comprises a transmission lead (221), a filling layer (222) and a shielding layer (223), a metal lead (2211) is arranged inside the transmission lead (221), the temperature sensing chip (211) is connected with the metal lead (2211), the encapsulating material (213) wraps the joint of the temperature sensing chip (211) and the metal lead (2211), the filling layer (222) is arranged on the outer side of the transmission lead (221), the shielding layer (223) is arranged on the outer side of the filling layer (222), and one side, close to the sealing layer (211), of the guide pipe (12) is sealed through the sealing layer (212).

2. An easily replaceable electronic temperature sensor according to claim 1, wherein: the packaging material (213) is specifically made of epoxy glue or silica gel, and the filling layer (222) is specifically made of silica gel.

3. An easily replaceable electronic temperature sensor according to claim 1, wherein: a detection surface (14) is arranged on the outer side of the detection body (13).

4. An electronic temperature sensor of claim 1, wherein: the sealing layer (212) is flush with the port of the shielding layer (223), and an integrated sealing structure is formed.

5. An easily replaceable electronic temperature sensor according to claim 1, wherein: the outside of shielding layer (223) is provided with the inoxidizing coating, the inoxidizing coating is hard material preparation.

6. An easily replaceable electronic temperature sensor according to claim 1, wherein: the locking mechanism (11) is provided with a detachable nut in a matched manner.

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