CN216899113U

CN216899113U - Electric heat tracing air blowing type liquid level meter sensor

Info

Publication number: CN216899113U
Application number: CN202122973324.1U
Authority: CN
Inventors: 徐祥伟
Original assignee: Shanghai Fuling Automation Control System Co ltd
Current assignee: Shanghai Fuling Automation Control System Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-07-05
Anticipated expiration: 2031-11-30

Abstract

The utility model provides an electric tracing heat blowing type liquid level meter sensor which comprises a sensor assembly and an electric tracing assembly, wherein the sensor assembly comprises a measuring pipe, one end of the measuring pipe is connected with a positive pressure gas measuring inlet pipe of an air blowing type liquid level meter, the other end of the measuring pipe is inserted into the bottom of a material in a reaction kettle, the electric tracing assembly comprises an electric tracing band, a protective shell and a junction box, the protective shell is sleeved outside a set position of the measuring pipe, the electric tracing band is spirally wound on the measuring pipe and is positioned in the protective shell, the junction box is fixed on the protective shell, and the electric tracing band is electrically connected with a power supply through the junction box. The measuring pipe is heated by the electric heating belt, so that the temperature is convenient to adjust, the optimal heating temperature can be selected, the energy is saved, the efficiency is high, and the cost is saved. Moreover, a heat tracing flange is not required to be installed, and the dismounting is convenient. In addition, not only can protect the electric tracing band through setting up the protecting crust, can also reduce the heat dissipation.

Description

Electric heat tracing air blowing type liquid level meter sensor

Technical Field

The utility model relates to the technical field of liquid level measurement, in particular to an electric heat tracing air blowing type liquid level meter sensor.

Background

In the industries of polyester chemical fiber, petrochemical industry and the like, a blowing liquid level meter is generally used for measuring the liquid level in a reaction kettle. The blowing liquid level meter can be understood as a non-contact liquid level measuring instrument which can measure the materials in an open or closed container. Except that the gas blowing pipe is contacted with the measured medium, the gas blowing device and the differential pressure transmitter measuring element are not contacted with the measured medium, thereby protecting the measuring element, reducing the maintenance of the instrument and increasing the reliability of measurement. Because the blowing device can ensure the output of gas with constant flow, the pressure measured by the differential pressure transmitter can automatically follow the change of the outlet pressure of the blowing pipe, and therefore, the signal output by the differential pressure transmitter corresponds to the liquid level height of the medium.

In the measurement process of the differential pressure transmitter, a sensor structure is generally needed, the sensor structure of the existing blowing liquid level meter is shown in figure 1, and the sensor structure mainly comprises a measuring pipe 1, a heat tracing flange 2, a vacuum plug valve 3, a mounting flange 4, a poking needle 5 and a heat tracing jacket 6. This kind of sensor structure need send high temperature heat medium to survey buret 1 side through the pipeline, and rethread companion's heat flange 2 butt joint intercommunication utilizes heat tracing jacket 6 to realize the heat tracing, and the heat tracing is more troublesome, and extravagant pipeline cost is higher, and the temperature that the heat tracing temperature depends on the heat medium, can't select the best temperature of heat tracing, very not energy-conserving.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric tracing air-blowing type liquid level meter sensor which is convenient to adjust temperature by adopting an electric tracing band to trace heat to a measuring pipe, can select the optimal tracing temperature, is more energy-saving and efficient and saves cost.

In order to achieve the purpose, the utility model provides an electric tracing heat air blowing type liquid level meter sensor which comprises a sensor assembly and an electric tracing heat assembly, wherein the sensor assembly comprises a measuring pipe, one end of the measuring pipe is connected with a positive pressure air inlet pipe of the air blowing type liquid level meter, the other end of the measuring pipe is inserted into the bottom of a material in a reaction kettle, the electric tracing heat assembly comprises an electric tracing heat belt, a protective shell and a junction box, the protective shell is sleeved outside the set position of the measuring pipe, the electric tracing heat belt is spirally wound on the measuring pipe and located in the protective shell, the junction box is fixed on the protective shell, and the electric tracing heat belt is electrically connected with a power supply through the junction box.

Optionally, the protective shell comprises two symmetrically arranged half shells, and the two half shells are respectively located on two opposite sides of the measuring pipe and enclose into a whole.

Optionally, the protective housing still includes bolt and nut, two the tip of half shell is provided with the connecting hole respectively, the bolt runs through two pass through behind the connecting hole that corresponds on the half shell nut locking.

Optionally, the protective shell is made of stainless steel.

Optionally, the electric tracing band assembly comprises a plurality of wire buckles axially arranged along the measuring pipe, and the electric tracing band is clamped into the wire buckles.

Optionally, the thread buttons are spirally distributed along the axial direction of the measuring tube.

Optionally, the electric trace heating assembly comprises a plurality of high temperature tapes, and the high temperature tapes at least cover a part of the electric trace heating tape.

Optionally, the electric tracing band is a self-temperature-control electric tracing band.

Optionally, the sensor module is still including disclosing needle and sealing filler, disclose the needle by survey the buret deviates from reation kettle's one end is inserted survey intraductal and can be relative survey the buret is along vertical movement, sealing filler fill in disclose the needle with survey between the buret.

Optionally, a groove in a bolt shape is formed in one end, inserted into the measuring tube, of the poking needle.

The utility model provides an electric tracing air-blowing type liquid level meter sensor, which is convenient to adjust temperature by adopting an electric tracing band to trace heat to a measuring tube, can select the optimal tracing temperature, is more energy-saving and efficient and saves cost. And, need not to install the companion's heat flange, it is convenient to dismantle, and whole device simple structure, the volume is littleer. In addition, through setting up the protective housing not only can be right the electric tracing area is protected, can also reduce the heat dissipation, practices thrift the electric energy.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the utility model and do not constitute any limitation to the scope of the utility model. Wherein:

FIG. 1 is a schematic diagram of a blowing level gauge sensor provided in the prior art;

FIG. 2 is a schematic structural diagram of an electric tracing air-blowing level gauge sensor provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a poking needle according to an embodiment of the present invention;

in the drawings:

1-measuring tube; 2-heat tracing flange; 3-vacuum plug valve; 4-installing a flange; 5-poking a needle; 6-heat tracing jacket; 7-a reaction kettle;

10-measuring tube; 20-positive pressure air inlet pipe measurement; 30-electric tracing band; 40-a protective shell; 50-mounting flange; 60-poking a needle; 70-a vacuum valve; 80-a negative pressure air inlet pipe; 90-groove.

Detailed Description

To further clarify the objects, advantages and features of the present invention, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this disclosure, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. As used in this disclosure, the term "plurality" is generally employed in its sense including "at least one" unless the content clearly dictates otherwise. As used in this disclosure, the term "at least two" is generally employed in a sense including "two or more" unless the content clearly dictates otherwise. Furthermore, the terms "first", "second", "third" 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, features defined as "first", "second", "third" may explicitly or implicitly include one or at least two of the features.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an electric tracing air blowing type liquid level meter sensor provided by an embodiment of the utility model. This embodiment provides an electric heat tracing air blowing level gauge sensor, including sensor module and electric heat tracing subassembly, sensor module is including surveying buret 10, survey the one end of buret 10 and the malleation of air blowing level gauge and survey intake pipe 20 and be connected, the bottom of the material of the other end in inserting reation kettle, electric heat tracing subassembly includes electric heat tracing band 30, protecting crust 40 and terminal box, protecting crust 40 cover is located outside the settlement position of surveying buret 10, electric heat tracing band 30 be the heliciform winding in just be located on the survey buret 10 in the protecting crust 40, the terminal box is fixed in on the protecting crust 40, electric heat tracing band 30 passes through the terminal box is connected with a power supply electricity.

The measuring tube 10 is heated by the electric heating belt 30, so that the temperature is conveniently adjusted, the optimal heating temperature can be selected, the energy is saved, the efficiency is high, and the cost is saved. And, need not to install the companion's heat flange, it is convenient to dismantle, and whole device simple structure, the volume is littleer. In addition, the protective shell 40 can protect the electric tracing band 30, reduce heat dissipation and save electric energy.

Specifically, in this embodiment, sensor module is including surveying buret 10, survey buret 10's one end and the malleation of air blowing level gauge and survey intake pipe 20 and be connected, the bottom of the material of the other end in inserting reation kettle, malleation side intake pipe with survey buret 10 intercommunication in order to measure the pressure of the material in the reation kettle.

Please continue to refer to fig. 2, the sensor assembly further includes conventional components such as a mounting flange 50, a poking needle 60 and a vacuum valve 70, the mounting flange 50 is located at the opening of the reaction kettle for fixing the negative pressure gas intake pipe 80 of the measuring pipe 10 and the air blowing type level gauge, the poking needle 60 is formed by inserting one end of the measuring pipe 10 deviating from the reaction kettle into the measuring pipe 10 and moving the measuring pipe 10 vertically, when the material returns and is not seriously coagulated, the material can be poked back to the reaction kettle through the poking needle 60, the vacuum valve 70 is located above the interface of the positive pressure gas intake pipe 20 and used for ensuring the sealing performance of the measuring pipe 10 and further ensuring the sealing performance of the reaction kettle. In this embodiment, the vacuum valve 70 is closed when the use of the poke needle 60 is not required and the vacuum valve 70 is open when the use of the poke needle 60 is required. In this embodiment, the vacuum valve 70 is typically a plug valve or a ball valve.

It should be understood that the set position of the measuring pipe 10 can be understood as a portion of the measuring pipe 10 between the mounting flange 50 and the vacuum valve 70, which is heavily blocked due to condensation that has occurred when the material flows back, and thus the material is prevented from being condensed and blocked by installing the electric tracing band 30 at the set position to heat the material in the measuring pipe 10. Of course, the installation position of the electric trace band 30 can be adjusted according to the specific structure of the measuring pipe 10 and the actual requirement, which is not limited in this application.

In this embodiment, a sealing filler is further filled between the poking needle 60 and the measuring tube 10, so that the poking needle 60 can ensure the sealing condition of the reaction kettle in the moving process, and the measuring result of the blowing liquid level meter is prevented from being influenced.

Preferably, referring to fig. 3, fig. 3 is a schematic structural diagram of a poking needle according to an embodiment of the present invention, wherein one end of the poking needle 60 inserted into the measuring tube 10 is provided with a bolt-shaped groove 90. Will be equivalent to the bottom design of disclosing needle 60 is the pattern of twist drill, works as when surveying buret 10 takes place to block up, can't dredge easily through disclosing needle 60 survey buret 10, can rotate this moment and disclose needle 60 for twist drill bores the material of condensing slowly, and then will survey buret 10 mediation, guarantees the normal use of the level gauge of blowing, compares conventional flat brill, and the mediation dynamics is big, and the effect is better.

The protective case 40 is used not only to protect the electric tracing band 30 and prevent safety problems caused by the direct exposure of the electric tracing band 30 in the environment, but also to reduce heat dissipation of the electric tracing band 30 and save electric power. In this embodiment, the protective shell 40 includes two symmetrical half-shells, two of which are respectively located on two opposite sides of the measuring tube 10 and enclose into a whole, and the advantage of such design lies in the convenience of installation and disassembly.

Preferably, the protective shell 40 further includes a bolt and a nut, the end portions of the two half shells are respectively provided with a connecting hole, and the bolt penetrates through the corresponding connecting holes on the two half shells and then is locked by the nut. Through threaded connection mode fastening nature good, it is convenient to dismantle. Of course, other detachable connections, such as a snap connection, may be used, and the present application is not limited in any way.

In this embodiment, the protective shell 40 is made of stainless steel. The stainless steel has better high temperature resistance, smooth surface and more aesthetic property. Of course, other high temperature resistant materials may be used, and the present application is not limited thereto.

As a preferred example in this embodiment, the electric trace assembly includes a plurality of wire buttons provided along the axial direction of the measuring pipe 10, and the electric trace band 30 is snapped into the wire buttons. The electric tracing band 30 is better fixed by providing the wire button. The wire clip may be secured to the measurement tube 10 by welding or the like.

Preferably, the thread buttons are spirally distributed along the axial direction of the measuring tube 10. It is understood that the electric trace band 30 is spirally wound around the measuring pipe 10, so that it is spirally distributed along the axial direction of the measuring pipe 10 by the wire button to better fix the electric trace band 30.

As another preferred example in this embodiment, the electric trace heating assembly includes a plurality of high temperature tapes, and the high temperature tapes at least partially cover the electric trace heating tape 30. The high temperature adhesive tape is used to directly adhere the electric trace tape 30 to the measurement pipe 10.

It should be understood that the use of the wire button or the high temperature adhesive tape is for fixing the electric tracing band 30, and also for facilitating the installation and removal of the electric tracing band 30.

The electric tracing band 30 is an automatic temperature control electric tracing band. The self-control temperature electric tracing band is composed of a conductive core band with PTC characteristic and an insulated protective layer covered on the conductive core band, can automatically adjust output power and heat mixing temperature along with the temperature change of a heat traced object, can be randomly shortened or lengthened in a certain range for use, and has the advantages of good insulating property, ageing resistance, low-voltage operation, safety, reliability, good flexibility, convenience in installation, convenience in use and maintenance and the like. In use, the automatic temperature control electric tracing band 30 of the corresponding model can be selected according to the optimal tracing temperature required by the air blowing type liquid level meter sensor, the automatic temperature control electric tracing band 30 is connected with a power supply through the junction box to realize optimal tracing, a tracing flange is not needed, the disassembly is convenient, the size is smaller, the energy is saved, the efficiency is high, and the cost is saved.

Of course, the electric tracing band 30 may be temperature-regulated by a temperature controller, which is not limited in this application.

To sum up, the embodiment of the utility model provides an electric tracing heat air blowing type liquid level meter sensor which comprises a sensor assembly and an electric tracing heat assembly, wherein the sensor assembly comprises a measuring pipe, one end of the measuring pipe is connected with a positive pressure air inlet pipe of the air blowing type liquid level meter, the other end of the measuring pipe is inserted into the bottom of a material in a reaction kettle, the electric tracing heat assembly comprises an electric tracing heat belt, a protective shell and a junction box, the protective shell is sleeved outside the set position of the measuring pipe, the electric tracing heat belt is spirally wound on the measuring pipe and is positioned in the protective shell, the junction box is fixed on the protective shell, and the electric tracing heat belt is electrically connected with a power supply through the junction box. The measuring tube is heated by the electric heating belt, so that the temperature is convenient to adjust, the optimal heating temperature can be selected, the energy is saved, the efficiency is high, and the cost is saved. And, need not to install the companion's heat flange, it is convenient to dismantle, and whole device simple structure, the volume is littleer. In addition, through setting up the protective housing not only can be right the electric tracing area is protected, can also reduce the heat dissipation, practices thrift the electric energy.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides an electric heat tracing air blowing level gauge sensor, a serial communication port, including sensor module and electric heat tracing subassembly, sensor module is including surveying buret, survey the one end of buret and the malleation intake-tube connection of air blowing level gauge, the bottom of the material in the other end inserts reation kettle, electric heat tracing subassembly includes electric heat tracing band, protecting crust and terminal box, the protecting crust cover is located outside the settlement position of surveying buret, electric heat tracing band be the heliciform winding in just be located on the survey buret in the protecting crust, the terminal box is fixed in on the protecting crust, electric heat tracing band passes through the terminal box is connected with a power supply electricity.

2. The electric trace heat insufflated level gauge sensor according to claim 1, wherein said protective shell comprises two half shells symmetrically disposed on opposite sides of said measuring tube and enclosing into a whole.

3. The electric tracing heating air blowing type liquid level meter sensor of claim 2, wherein the protective shell further comprises a bolt and a nut, the end parts of the two half shells are respectively provided with a connecting hole, and the bolt penetrates through the corresponding connecting holes on the two half shells and then is locked by the nut.

4. The electric tracing air-blowing level gauge sensor of claim 1 or 2, wherein the protective shell is made of stainless steel.

5. The electric trace heat air-blowing level gauge sensor according to claim 1, wherein the electric trace heat assembly includes a plurality of wire buttons provided along an axial direction of the measuring tube, the electric trace heat tape being snapped into the wire buttons.

6. The electric trace heat air-blown level gauge sensor of claim 5, wherein the wire loops are helically distributed along the axial direction of the measuring tube.

7. The electric trace heat air-blown level gauge sensor of claim 1, wherein the electric trace heat assembly comprises a plurality of high temperature adhesive tapes, the high temperature adhesive tapes covering at least a portion of the electric trace heat tape.

8. The electric tracing heat air blowing level gauge sensor of claim 1, wherein the electric tracing heat band is a self-temperature control electric tracing heat band.

9. The electric heat tracing air blowing type liquid level meter sensor as claimed in claim 1, wherein the sensor assembly further comprises a poking needle and a sealing filler, the poking needle is inserted into the measuring tube from the end of the measuring tube opposite to the reaction kettle and can move vertically relative to the measuring tube, and the sealing filler is filled between the poking needle and the measuring tube.

10. The electric heat tracing air blowing type level gauge sensor of claim 9, wherein a bolt-shaped groove is formed at one end of the lance inserted into the measuring tube.