CN210464723U

CN210464723U - Temperature sensor

Info

Publication number: CN210464723U
Application number: CN201921515041.9U
Authority: CN
Inventors: 宿吉贵
Original assignee: Ningbo New Strongteck Electrical Technology Shares Ltd
Current assignee: Ningbo New Strongteck Electrical Technology Shares Ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-05-05
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a temperature sensor belongs to sensor technical field, and it has solved current temperature sensor and can not be applicable to the problem that multiple liquid temperature control and leakproofness are not good. This temperature sensor includes plug subassembly, screwed joint, electric capacity and contact pin, comes the change of induced temperature through set up electric capacity in screwed joint, and screwed joint can protect electric capacity not receive the damage, is applicable to the temperature monitoring of multiple liquid, sets up O type circle again in screwed joint and plug subassembly department of meeting, and sealing performance is good, guarantees inside not being corroded, and this temperature sensor has the leakproofness well and is applicable to the advantage of multiple liquid.

Description

Temperature sensor

Technical Field

The utility model relates to a sensor technical field refers in particular to a temperature sensor.

Background

At present, temperature sensors mainly include three major types, i.e., an electric contact mercury thermometer, a thermocouple, and a thermal resistor (including a platinum resistor, a copper resistor, a thermistor, and the like). Although the electric contact mercury thermometer has simple structure, convenient use, higher accuracy and lower price, the electric contact mercury thermometer can only be installed and adjusted on site, signals cannot be transmitted and recorded remotely, and digitization cannot be realized. Although the thermocouple sensor and the thermal resistance sensor realize signal remote transmission and automatic temperature display, control and digitization, rare and precious metals (platinum, rhodium and the like) are used as main materials, so that the thermocouple sensor and the thermal resistance sensor are expensive and greatly influenced by the purity and the thermal stability of the materials, namely, the measured electric quantity (potential or resistance value) and the temperature change are approximately in a linear relationship.

SUMMERY OF THE UTILITY MODEL

The utility model discloses having considered aforementioned problem and having made, utility model's purpose provides a temperature sensor, is applicable to the temperature monitoring of various liquid, and sealing performance is good.

In order to achieve the above object, the present invention provides a temperature sensor, including:

the plug assembly is provided with a containing cavity at one end;

the threaded joint is connected with one side of the plug assembly, and an O-shaped ring is arranged at the joint of the threaded joint and the plug assembly;

a capacitor disposed within the threaded joint;

and one end of the contact pin is connected with the capacitor, and the other end of the contact pin is arranged in the cavity of the plug assembly.

According to the above temperature sensor, the screwed joint includes connecting portion and protection portion, the connecting portion with the inside cavity that all establishes of protection portion, the electric capacity sets up in the protection portion.

According to the temperature sensor, the connecting portion include first connecting portion and second connecting portion, be equipped with the external screw thread on the first connecting portion shell, second connecting portion terminal surface is equipped with the limiting plate, the limiting plate is inwards bent, the limiting plate with second connecting portion terminal surface surrounds and forms first recess.

According to the temperature sensor, two stop blocks are arranged on the shell at one end of the plug assembly, a second groove is formed between the two stop blocks, the O-shaped ring is arranged in the second groove, and the end, provided with the stop blocks, of the plug assembly is clamped in the first groove.

According to the temperature sensor, the contact pin is provided with the conducting wire, one end of the conducting wire is connected with the contact pin, and the other end of the conducting wire is connected with the capacitor.

According to the temperature sensor, the plug assembly is internally provided with the positioning device, the positioning device is provided with the positioning hole, and the contact pin and one end of the conductive wire are both arranged in the positioning hole.

According to the temperature sensor, the upper side face of the plug assembly is provided with the handle, the handle is in a block shape, and the front side end face of the handle is provided with the inwards-concave arc-shaped groove.

The utility model discloses following beneficial effect has:

1. the change of temperature can influence the change of capacitance resistance to influence the resistance change of whole circuit, thereby judge the temperature, the reaction is comparatively sensitive.

2. The electric capacity outside is provided with the protection part, can put into multiple different liquid with it, can not lead to the damage of electric capacity.

3. The O-shaped ring is arranged at the joint of the plug assembly and the threaded joint, so that liquid can be prevented from entering the cavity from the joint of the plug assembly and the threaded joint, the sealing effect is good, and internal components are protected from being damaged.

4. The plug assembly is provided with the handle, so that the plug assembly can be conveniently pulled out.

Drawings

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

FIG. 2 is a schematic structural view of the positioning device of the present invention;

fig. 3 is a schematic structural diagram of the plug assembly of the present invention;

fig. 4 is a schematic view of the screw joint structure of the present invention.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, a temperature sensor, comprising:

the plug assembly 100, the plug assembly 100 is used for transmitting signals, one end of the plug assembly 100 is provided with a cavity 110, and the cavity 110 is used for protecting the contact pin 400 and connecting with other components.

And the threaded joint 200 is connected with one side of the plug assembly 100, an O-shaped ring 130 is arranged at the joint of the threaded joint 200 and the plug assembly 100, and the threaded joint 200 is used for fixing the lower end on other parts and also used as a medium of the capacitor 300 to protect the capacitor from being corroded.

The capacitor 300 and the capacitor 300 are arranged in the threaded connector 200, the resistance of the capacitor 300 can be changed when the temperature is changed, the capacitor 300 is connected in series to the circuit, the resistance value in the circuit is measured to determine the temperature, the response is sensitive, and the circuit is not easy to damage.

The plug pin 400 is connected with the capacitor 300 at one end, and is arranged in the cavity 110 of the plug assembly 100 at the other end, the capacitor 300 is connected into a circuit through the plug pin 400, so that the resistance value of the capacitor is convenient to measure, meanwhile, the cavity 110 is used for protecting the plug pin 400, the plug pin 400 is prevented from being damaged, and meanwhile, the position of the sensor can be fixed through the cavity 110.

The threaded joint 200 comprises a connecting part 210 and a protecting part 220, the connecting part 210 and the protecting part 220 are both provided with cavities, the capacitor 300 is arranged in the protecting part 220, the connecting part 210 of the threaded joint 200 is used for being connected with the plug assembly 100 and external parts, and the protecting part 220 is used for protecting the capacitor 300 from being damaged and transmitting temperature changes as media so as to influence the change of the resistance value of the capacitor 300.

The connecting portion 210 includes a first connecting portion 211 and a second connecting portion 212, an outer thread 211a is provided on a housing of the first connecting portion 211, the lower end of the sensor can be fixed on other components through the outer thread 211a on the first connecting portion 211, a limiting plate 212a is provided on an end surface of the second connecting portion 212, the limiting plate 212a is bent inward, the limiting plate 212a and the end surface of the second connecting portion 212 surround to form a first groove 212b, and the first groove 212b is connected with the plug assembly 100.

Two stoppers 120 are arranged on the shell at one end of the plug assembly 100, a second groove (not marked in the figure) is arranged between the two stoppers 120, the O-shaped ring 130 is arranged in the second groove, the end, provided with the stoppers 120, of the plug assembly 100 is clamped in the first groove 212b, namely, the stopper 120 on the plug assembly 100 is clamped in the first groove 212b, one end of the plug assembly 100 is connected with the threaded connector 200, meanwhile, the O-shaped ring 130 is further arranged on the inner side of the connection part, the sealing performance of the connection part is guaranteed, liquid is guaranteed not to enter the plug assembly 100 from the connection part, and parts which are easy to be damaged are protected.

The pin 400 is provided with two conductive wires 410, one end of each conductive wire 410 is connected with the pin 400, the other end of each conductive wire 410 is connected with the capacitor 300, the capacitors 300 are connected in series into a circuit through the conductive wires 410, if the two pins 400 are connected with two stages of a conductive device, a complete circuit can be formed, the resistance value in the circuit can be measured through a measurer, and the temperature can be further determined.

The plug assembly 100 is provided with a positioning device 140 therein, the positioning device 140 is provided with a positioning hole (not labeled) therein, one end of the pin 400 and one end of the conductive wire 410 are both disposed in the positioning hole, the pin 400 and the conductive wire 410 are fixed by the positioning device 140 to prevent from shaking inside the plug assembly 100, and the positioning device 140 should be made of a non-conductive material to prevent electric shock.

The upper side face of the plug assembly 100 is provided with a handle 150, the handle 150 is in a block shape, the front side end face of the handle 150 is provided with an inward concave arc-shaped groove 151, the arc-shaped groove 151 is convenient for people to grip, and the handle 150 is arranged to facilitate the plug assembly 100 to be quickly pulled out.

The utility model provides a pair of temperature sensor, through being provided with O type circle in plug subassembly and screwed joint department, guarantee the gas tightness of its junction, prevent that the internals from being corroded, be provided with electric capacity in the screwed joint simultaneously, electric capacity is when the temperature changes, its resistance also can change thereupon, it comes to set up conductor wire and plug in being connected to electric capacity circuit from this, resistance through among the test circuit can draw the height of temperature, and then monitors the temperature of liquid, and can not receive the erosion, be applicable to multiple liquid.

The technical solutions of the present invention have been described in detail with reference to the accompanying drawings, and the described embodiments are used to help understand the ideas of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the claims.

Claims

1. A temperature sensor, comprising:

the plug assembly is provided with a containing cavity at one end;

a capacitor disposed within the threaded joint;

2. The temperature sensor according to claim 1, wherein the threaded joint comprises a connecting portion and a protective portion, the connecting portion and the protective portion are provided with cavities inside, and the capacitor is arranged in the protective portion.

3. The temperature sensor according to claim 2, wherein the connecting portion comprises a first connecting portion and a second connecting portion, an external thread is arranged on a housing of the first connecting portion, a limiting plate is arranged on an end surface of the second connecting portion, the limiting plate is bent inward, and the limiting plate and the end surface of the second connecting portion surround to form a first groove.

4. The temperature sensor as claimed in claim 3, wherein two stoppers are provided on the housing at one end of the plug assembly, a second groove is provided between the two stoppers, the O-ring is disposed in the second groove, and the end of the plug assembly provided with the stopper is clamped in the first groove.

5. The temperature sensor as claimed in claim 1, wherein the pin is provided with a conductive wire, one end of the conductive wire is connected to the pin, and the other end of the conductive wire is connected to the capacitor.

6. The temperature sensor as claimed in claim 5, wherein a positioning device is disposed in the plug assembly, the positioning device is provided with a positioning hole, and the pin and one end of the conductive wire are disposed in the positioning hole.

7. The temperature sensor as claimed in claim 1, wherein the plug assembly has a pull tab on an upper side surface, the pull tab has a block shape, and an inwardly recessed arc-shaped groove is formed on a front side end surface of the pull tab.