CN218895860U

CN218895860U - Temperature transmitter

Info

Publication number: CN218895860U
Application number: CN202223604088.7U
Authority: CN
Inventors: 刘梦丹; 牛志杰; 曹嘉伟; 孙淼; 夏青; 张航瑞
Original assignee: Tianjin Energy Internet Of Things Technology Co ltd
Current assignee: Tianjin Energy Internet Of Things Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-21
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to the technical field of temperature detection, and particularly provides a temperature transmitter, which comprises: the shell is provided with a mounting part on the outer side wall, the mounting part is communicated with the inner space of the shell, the lower surface of the shell is provided with a fixing part, the upper surface of the shell is provided with a display part, a signal conversion unit and a signal processing unit are arranged in the shell, and the signal conversion unit and the display part are respectively and electrically connected with the signal processing unit; and one end of the temperature detection module is penetrated on the mounting part and is electrically connected with the signal conversion unit, and the other end of the temperature detection module is used for detecting temperature information. According to the temperature transmitter, the fixing part is arranged on the shell, one end of the temperature detection module is connected with the signal conversion unit, and the other end of the temperature detection module can be independently placed in an environment to be tested, so that the connecting part of the temperature transmitter is not required to be frequently disassembled and assembled, the stability of the precision of the instrument is improved while the service life of the instrument is prolonged, and the operating environment can be freely switched.

Description

Temperature transmitter

Technical Field

The utility model relates to the technical field of temperature detection, in particular to a temperature transmitter.

Background

The temperature transmitter is common equipment in the industrial field, and is mainly used for realizing accurate parameter measurement and control for industrial process temperature, and common application fields comprise biological medicine, chemical industry, petroleum, building materials, metallurgy, textile and the like. Temperature transmitters are generally classified into two types, namely a set sensor and a non-set sensor, and sensor-type equipment is more common under the field detection working condition.

Chinese patent CN215598569U discloses an integral type temperature transmitter through setting up holding rod and flexible pad and has solved the staff and need use the protective housing to rotate temperature transmitter and install fixedly, easily leads to the connection between protective housing and the probe rod to appear not hard up, reduces the problem of device's life, but it can't avoid this dismouting frequently to take place the problem, has just alleviateed both friction relationship, although has increased life, can't avoid influencing instrument measurement accuracy's problem.

Therefore, a temperature transmitter is needed, and the problems that the connection is loose, the service life of the device is prolonged, and the accuracy of an instrument is affected due to the fact that the protective shell and the detection part are prevented from being frequently disassembled and assembled are avoided.

Disclosure of Invention

In view of this, the utility model provides a temperature transmitter, the shell and the temperature detection module of which do not need to be frequently disassembled and assembled, the working environment can be freely switched, the service life of the instrument is prolonged, and meanwhile, the stability of the precision of the instrument is improved.

The utility model proposes a temperature transmitter comprising:

the device comprises a shell, wherein the outer side wall of the shell is provided with an installation part, the installation part is communicated with the inner space of the shell, the lower surface of the shell is provided with a fixing part, the upper surface of the shell is provided with a display part, the interior of the shell is provided with a signal conversion unit and a signal processing unit, and the signal conversion unit and the display part are respectively and electrically connected with the signal processing unit;

and one end of the temperature detection module is penetrated on the mounting part and is electrically connected with the signal conversion unit, and the other end of the temperature detection module is used for detecting temperature information.

Further, the temperature detection module includes:

one end of the temperature transmission wire harness passes through the mounting part and is connected with the signal conversion unit;

the temperature sensing probe is arranged outside the shell and connected with the other end of the temperature transmission wire bundle, and the temperature sensing probe is used for detecting temperature information.

Further, the temperature detection module further includes:

and one end of the flexible connecting part is connected with the mounting part, the other end of the flexible connecting part is connected with the temperature sensing probe, and the temperature sensing wire harness is arranged in the flexible connecting part in a penetrating way.

Further, the flexible connection unit includes:

one end of the high-temperature sleeve penetrates into the mounting part, and the other end of the high-temperature sleeve penetrates through and is connected with the temperature sensing probe;

the screw thread mounting structure is sleeved at one end of the high-temperature sleeve, and the temperature sensing probe penetrates through the screw thread mounting structure.

Further, the temperature sensing probe includes:

the steel sleeve is positioned at one end of the high-temperature sleeve, and one end of the steel sleeve is penetrated in the threaded mounting structure and is in threaded connection with the threaded mounting structure;

one end of the insulating sleeve is penetrated into the other end of the steel sleeve and is fixed in the steel sleeve;

one end of the platinum rhodium thermocouple wire is arranged in the insulating sleeve in a penetrating way, and the other end of the platinum rhodium thermocouple wire is exposed out of one end of the insulating sleeve far away from the steel sleeve; wherein,,

the other end of the temperature transmission wire harness sequentially passes through the high-temperature sleeve and the threaded mounting structure to be connected with one end of the platinum-rhodium thermocouple wire, and the platinum-rhodium thermocouple wire is wrapped with a glass fiber tube.

Furthermore, the insulating sleeve is a ceramic insulating sleeve, two through holes are formed in the insulating sleeve, and the positive electrode wire and the negative electrode wire of the platinum-rhodium thermocouple wire penetrate through the insulating sleeve and are used for isolating the positive electrode wire and the negative electrode wire of the platinum-rhodium thermocouple wire.

Further, the temperature transmission wire harness comprises a wire harness, and a high-temperature thermoplastic pipe and a shielding pipe are sequentially sleeved outside the wire harness.

Further, the display section includes:

the display screen is arranged at the opening at the upper end of the shell and is electrically connected with the signal processing unit;

the sealing ring is arranged on the upper end face of the shell,

and the protective glass covers the opening at the upper end of the shell, the display screen is positioned right below the protective glass, and the lower side surface of the protective glass is in contact with the sealing ring.

Further, a thermal insulation coating is arranged on the inner side wall and/or the outer side wall of the shell.

Further, a ventilation part is detachably arranged on the side wall of the shell, and the ventilation part is used for ventilating or radiating the inner space of the shell.

Compared with the prior art, the temperature detection device has the beneficial effects that the fixing part is arranged on the shell, one end of the temperature detection module is connected with the signal conversion unit, and the other end of the temperature detection module can be independently placed in the environment to be tested, so that the connecting part of the temperature detection module does not need to be frequently disassembled and assembled, the stability of the precision of the instrument is improved while the service life of the instrument is prolonged, and the operating environment can be freely switched.

In addition, the platinum-rhodium thermocouple wire is used as a main temperature sensing probe element, and has the advantages of high accuracy, good stability, wide temperature measuring temperature area, long service life, high upper limit of temperature measurement and the like. The temperature sensor can be suitable for high temperature in various production processes, and can be widely applied to temperature measurement operations of powder metallurgy, sintering bright furnaces, vacuum furnaces, smelting furnaces, glass, steelmaking furnaces, ceramic, industrial salt bath furnaces and the like.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic diagram of a temperature transmitter according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram illustrating a temperature transmitter disassembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a ventilation location provided in an embodiment of the present utility model;

fig. 4 is a schematic diagram illustrating disassembly of a temperature detection module according to an embodiment of the present utility model.

In the figure: 1-a signal processing unit; 2-a housing; 21-a mounting part; 22-a display part; 221-a sealing ring; 222-cover glass; 23-a fixing part; 24-ventilation; 241-fans; a 3-signal conversion unit; 31-a signal processing unit; 311-display screen; 4-a temperature detection module; 41-a temperature transmission wire bundle; 410-flexible connection; 411-high temperature thermoplastic pipe; 412-shielding the tube; 413-high temperature casing; 414-threaded mounting structure; 42-temperature sensing probe; 421-platinum rhodium thermocouple wires; 422-insulating sleeve; 423-steel sleeve; 424-glass fiber tube.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The embodiment provides a temperature transmitter, and the beneficial effect of this embodiment lies in through setting up fixed part on the casing, temperature detection module's one end inserts signal conversion unit, and the other end can put into the environment of awaiting measuring alone for its connecting portion need not frequent dismouting, has improved the stability of instrument precision in increasing instrument life, can freely switch operation environment.

Referring to FIGS. 1-3, the present utility model provides a temperature transmitter comprising:

the device comprises a shell 2, a mounting part 21, a fixing part 23, a temperature detection module 4, a signal conversion unit 3 and a display part 22, wherein the mounting part 21 is arranged on the outer side wall of the shell 2, the mounting part 21 is communicated with the inner space of the shell 2, the fixing part 23 is arranged on the lower surface of the shell 2, the display part 22 is arranged on the upper surface of the shell 2, the signal conversion unit 3 and the signal processing unit 3 are arranged in the shell 2, and the signal conversion unit 3 and the display part 22 are respectively electrically connected with the signal processing unit 3; and one end of the temperature detection module 4 is penetrated on the mounting part 21 and is electrically connected with the signal conversion unit 3, and the other end of the temperature detection module 4 is used for detecting temperature information.

Specifically, the temperature detection module 4 of the present embodiment collects temperature information, and the temperature transmitter is internally provided with the signal processing unit 3. The working principle is that the common electric signal and the physical measurement signal measured under the working condition of the industrial site are converted into the output form supported by a communication protocol or the standard electric signal, the temperature measuring element of the equipment temperature detection module 4 outputs the signal in the operation stage of the equipment, the signal conversion unit 3 is transmitted to the signal processing unit 3, and the collected signal is converted into the current signal with the linear relation with the temperature based on the voltage stabilizing filtering processing, the operational amplification processing, the nonlinear correction processing, the V/I conversion processing, the constant current processing and the reverse protection processing, and the signal processing unit 3 transmits the information to the display part 22.

It can be understood that the fixing portion 23 on the back of the housing 2 is used for fixing one end of the temperature detection module 4, which is connected to the signal conversion unit 3 through the mounting portion 21, and the other end of the temperature detection module 4 is placed in the environment to be tested, so that the main structure on the temperature transmitter does not need to be frequently disassembled and assembled, and the working environment can be freely switched.

As shown in fig. 3 to 4, the temperature detection module 4 of the present embodiment includes: a temperature transmission wire harness 41 and a temperature sensing probe 42, wherein one end of the temperature transmission wire harness 41 passes through the mounting part 21 to be connected with the signal conversion unit 3; and a temperature sensing probe 42 is provided outside the housing 2 and connected to the other end of the temperature transmission wire harness 41, the temperature sensing probe 42 being used to detect temperature information.

Specifically, the temperature detection module 4 recognizes a common electric signal and a physical measurement signal of an industrial field working condition through the temperature sensing probe 42, and is connected to the signal conversion unit 3 through the temperature transmission wire harness 41 for monitoring the temperature.

Referring to fig. 4, the temperature detection module 4 of the present embodiment further includes:

and a flexible connection part 410, one end of which is connected to the mounting part 21 and the other end of which is connected to the temperature sensing probe 42, wherein the temperature sensing wire harness 41 is inserted into the flexible connection part 410.

Specifically, the temperature transmitter of the present embodiment can be adapted to more use conditions by the flexible connection 410.

Referring to fig. 4, the flexible connection unit 410 of the present embodiment includes:

a high-temperature sleeve 413 having one end penetrating into the mounting portion 21 and the other end penetrating into the temperature sensing probe 42;

and a screw thread mounting structure 414 sleeved at one end of the high temperature sleeve 413, and the temperature sensing probe 42 is penetrated in the screw thread mounting structure 414.

Specifically, the high temperature bushing 413 may protect the temperature sensing harness from normal operation under high temperature conditions.

Specifically, the screw mounting structure 414 can flexibly replace screw sleeves with various sizes, and can be suitable for more use scenes.

It can be appreciated that the temperature sensing probe can be separately placed into the measured environment by arranging the screw thread mounting structure 414 on one end of the high temperature sleeve 413, so that the temperature transmission wire bundle 41 can be prolonged according to the practical situation of use, the service environment of the temperature transmitter element is greatly improved, the service life of the temperature transmitter can be prolonged, and meanwhile, the stability of the measurement accuracy is improved.

Referring to fig. 4, the temperature sensing probe 42 of the present embodiment includes: steel sleeve 423, insulating sleeve 422 and platinum rhodium thermocouple wire 421; the steel sleeve 423 is positioned at one end of the high-temperature sleeve 413, and one end of the steel sleeve 423 is arranged in the threaded mounting structure 414 in a penetrating manner and is in threaded connection with the threaded mounting structure 414; one end of the insulating sleeve 422 is penetrated into the other end of the steel sleeve 423 and is fixed in the steel sleeve 423; one end of the platinum rhodium thermocouple wire 421 is arranged in the insulating sleeve 422 in a penetrating way, and the other end of the platinum rhodium thermocouple wire is exposed at one end of the insulating sleeve 422 far away from the steel sleeve 423; in addition, the other end of the temperature transmission wire bundle 41 sequentially passes through the high-temperature sleeve 413 and the screw thread mounting structure 414 to be connected with one end of the platinum-rhodium thermocouple wire 421, and the platinum-rhodium thermocouple wire 421 is wrapped with the glass fiber tube 424.

Referring to fig. 4, the insulating sleeve 422 in this embodiment is a ceramic insulating sleeve 422, two through holes are formed in the insulating sleeve 422, and two wires of the positive electrode and the negative electrode of the platinum-rhodium thermocouple wire 421 penetrate through the insulating sleeve and are used for isolating the two wires of the positive electrode and the negative electrode of the platinum-rhodium thermocouple wire 421.

Specifically, in the implementation process, firstly, the steel sleeve 423 penetrates the insulating sleeve 422, the insulating sleeve 422 penetrates the centering tool hole and is put into the bench clamp, the left hand is used for fixing the tool and guaranteeing the clamping angle to be vertical, and the bench clamp is screwed until the insulating sleeve 422 is plugged into the inner sleeve and the allowance of 0.24mm is reserved; and then the temperature sensing probe 42 platinum rhodium thermocouple wire 421 is penetrated into the steel sleeve 423 provided with the insulating sleeve 422, the glass fiber tube 424 is penetrated into the probe double wires from the tail end and is penetrated into the bottom, the double wires are sleeved into one glass fiber tube 424 together, finally, the tail end of the platinum rhodium thermocouple wire 421 is polished by a file, the tail end is silver-plated and then soldered into the temperature transmission wire bundle 41, and the temperature transmission wire bundle 41 is connected with the signal conversion unit 3.

Referring to fig. 4, the temperature transmission wire harness 41 of the present embodiment includes a wire harness, and a high temperature thermoplastic pipe 411 and a shielding pipe 412 are sequentially sleeved outside the wire harness.

It will be appreciated that the thermoplastic tube may provide protection and harness retention, and the shielding tube 412 may provide protection for signal transmission.

Referring to fig. 3, the display section 22 of the present embodiment includes: the display screen 311, the sealing ring 221 and the protective glass 222, wherein the display screen 311 is arranged at the opening of the upper end of the shell 2, and the display screen 311 is electrically connected with the signal processing unit 3; the sealing ring 221 is disposed on the upper end surface of the housing 2, the cover glass 222 covers the upper end opening of the housing 2, the display screen 311 is located right below the cover glass 222, and the lower side surface of the cover glass 222 contacts with the sealing ring 221.

Specifically, the display 22 is provided with a seal ring 221, and a cover glass 222 is mounted between the seal ring 221 and the casing 2, and the seal ring 221 and the cover glass 222 further enhance the high temperature resistance and the heat resistance of the temperature transmitter.

Specifically, the display 311 is provided with a temperature value and an indicator lamp, and the signal processing unit 1 is electrically connected to the display 311, so that the temperature can be clearly and effectively identified on the display 22, and in addition, the operating state of the temperature transmitter can be identified by the indicator lamp.

It can be appreciated that the sealing ring 221 and the protective glass 222 further enhance the high temperature resistance and the heat resistance, protect the temperature transmitter and prolong the service life.

As shown in connection with fig. 1-2, the inner side wall and/or the outer side wall of the housing 2 of the present embodiment is provided with a heat-shielding coating.

Specifically, the high temperature resistance of the surface of the shell 22 is improved after the heat-insulating paint is sprayed.

As shown in fig. 2 to 3, the side wall of the housing 2 of the present embodiment is detachably provided with a ventilation portion 24, and the ventilation portion 24 is used for ventilating or radiating the internal space of the housing 2.

Specifically, ventilation unit 24 is provided with ventilation holes and fan 241, and may cool the temperature transmitter.

Compared with the prior art, the temperature detection module has the beneficial effects that the fixing part 23 is arranged on the shell 2, one end of the temperature detection module 4 is connected with the signal conversion unit 3, and the other end of the temperature detection module can be independently placed in the environment to be tested, so that the connecting part of the temperature detection module is not required to be frequently disassembled, the service life of the instrument is prolonged, the stability of the precision of the instrument is improved, and the operating environment can be freely switched.

In addition, the platinum rhodium thermocouple wire 421 is used as a main temperature sensing probe 42 element, and has the advantages of high accuracy, good stability, wide temperature measuring temperature area, long service life, high upper limit of temperature measurement and the like. The temperature sensor can be suitable for high temperature in various production processes, and can be widely applied to temperature measurement operations of powder metallurgy, sintering bright furnaces, vacuum furnaces, smelting furnaces, glass, steelmaking furnaces, ceramic, industrial salt bath furnaces and the like.

Those of ordinary skill in the art will appreciate that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A temperature transmitter, comprising:

a housing (2), on the outer side wall of which an installation part (21) is arranged, the installation part (21) is communicated with the inner space of the housing (2), the lower surface of the housing (2) is provided with a fixing part (23), the upper surface of the housing (2) is provided with a display part (22), a signal conversion unit (3) and a signal processing unit (31) are arranged inside the housing (2), and the signal conversion unit (3) and the display part (22) are respectively electrically connected with the signal processing unit (31);

and one end of the temperature detection module (4) is penetrated on the mounting part (21) and is electrically connected with the signal conversion unit (3), and the other end of the temperature detection module (4) is used for detecting temperature information.

2. The temperature transmitter of claim 1, wherein the temperature detection module (4) comprises:

a temperature transmission wire harness (41) one end of which passes through the mounting portion (21) and is connected to the signal conversion unit (3);

and a temperature sensing probe (42) which is arranged outside the shell (2) and is connected with the other end of the temperature transmission wire bundle (41), wherein the temperature sensing probe (42) is used for detecting temperature information.

3. The temperature transmitter of claim 2, wherein the temperature detection module (4) further comprises:

and a flexible connection part (410) one end of which is connected with the mounting part (21) and the other end of which is connected with the temperature sensing probe (42), wherein the temperature sensing wire harness (41) is arranged in the flexible connection part (410) in a penetrating way.

4. A temperature transmitter according to claim 3, wherein the flexible connection (410) comprises:

a high-temperature sleeve (413) one end of which penetrates into the mounting part (21) and the other end of which penetrates into the temperature sensing probe (42);

and the screw thread mounting structure (414) is sleeved at one end of the high-temperature sleeve (413), and the temperature sensing probe (42) is arranged in the screw thread mounting structure (414) in a penetrating way.

5. The temperature transmitter of claim 4 wherein the temperature sensing probe (42) comprises:

the steel sleeve (423) is positioned at one end of the high-temperature sleeve (413), and one end of the steel sleeve is penetrated in the threaded mounting structure (414) and is in threaded connection with the threaded mounting structure (414);

an insulating sleeve (422) one end of which is inserted into the other end of the steel sleeve (423) and is fixed in the steel sleeve (423);

one end of the platinum rhodium thermocouple wire (421) is arranged in the insulating sleeve (422) in a penetrating way, and the other end of the platinum rhodium thermocouple wire is exposed out of one end of the insulating sleeve (422) far away from the steel sleeve (423); wherein,,

the other end of the temperature transmission wire harness (41) sequentially passes through the high-temperature sleeve (413) and the threaded mounting structure (414) to be connected with one end of the platinum-rhodium thermocouple wire (421), and the platinum-rhodium thermocouple wire (421) is wrapped with a glass fiber tube (424).

6. The temperature transmitter of claim 5, wherein the insulating sleeve (422) is a ceramic insulating sleeve (422), two through holes are formed in the insulating sleeve (422), and the positive and negative wires of the platinum-rhodium thermocouple wire (421) penetrate and are used for isolating the positive and negative wires of the platinum-rhodium thermocouple wire (421).

7. The temperature transmitter according to claim 5, wherein the temperature transmission wire harness (41) comprises a wire harness, and a high-temperature thermoplastic pipe (411) and a shielding pipe (412) are sequentially sleeved outside the wire harness.

8. The temperature transmitter of claim 1, wherein the display (22) comprises:

the display screen (311) is arranged at the opening at the upper end of the shell (2), and the display screen (311) is electrically connected with the signal processing unit (31);

a sealing ring (221) arranged on the upper end surface of the shell (2),

and the protective glass (222) is covered at the opening of the upper end of the shell (2), the display screen (311) is positioned right below the protective glass (222), and the lower side surface of the protective glass (222) is contacted with the sealing ring (221).

9. The temperature transmitter of claim 1, characterized in that the inner and/or outer side walls of the housing (2) are provided with a heat-insulating coating.

10. The temperature transmitter according to claim 1, characterized in that a ventilation part (24) is detachably provided on a side wall of the housing (2), the ventilation part (24) being used for ventilating or radiating an inner space of the housing (2).