CN208331793U - Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system - Google Patents

Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system Download PDF

Info

Publication number
CN208331793U
CN208331793U CN201820775618.9U CN201820775618U CN208331793U CN 208331793 U CN208331793 U CN 208331793U CN 201820775618 U CN201820775618 U CN 201820775618U CN 208331793 U CN208331793 U CN 208331793U
Authority
CN
China
Prior art keywords
electric
heating belt
temperature
examination equipment
auxiliary examination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201820775618.9U
Other languages
Chinese (zh)
Inventor
王辉
卢庆庆
张予杰
邓志伟
朱和平
周继兵
樊滔
常有青
纪杨
邬东辉
段华庭
吕杰
殷志猛
陈有明
党文杰
梁从富
吴焕
王鹏升
王新
赵帮稳
苟洋
梁挺
鄢运德
王�华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201820775618.9U priority Critical patent/CN208331793U/en
Application granted granted Critical
Publication of CN208331793U publication Critical patent/CN208331793U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Pipe Accessories (AREA)

Abstract

The utility model provides a kind of auxiliary examination equipment, electric tracer heating system and pipe-line transportation system, by the way that the temperature-detecting device for detecting electric-heating belt temperature is arranged, the output end of temperature-detecting device is electrically connected with processor, the output end of processor is electrically connected with display device, it further include providing the power supply device of electric energy for above-mentioned each device, to guarantee the normal operation of auxiliary examination equipment.The electric-heating belt temperature of auxiliary examination equipment installation place can be shown on the desplay apparatus by the utility model in real time, realize the real-time monitoring to electric-heating belt temperature, and convenient working personnel's checks, greatly shortens detection time, improves work efficiency.

Description

Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system
Technical field
The utility model relates to freezing prevention tubing technologies more particularly to a kind of for the auxiliary examination equipment of electric-heating belt, electricity Tracing system and pipe-line transportation system.
Background technique
Petroleum, natural gas generally carry out the production and transport of long range by pipeline, since transportation range is longer, to prevent pipe Flow media in road changes (such as decomposition, rotten, crystallization, cohesion are freezed) because temperature is too low, in production and transport Electric-heating belt generally is set in the outside of pipeline, electric-heating belt can convert electrical energy into thermal energy to compensate the flowing in pipeline Medium institute's dispersed heat in flow process, to maintain the optimal flow temperature of flow media.
Pipe-line transportation system in the prior art generally comprises conveyance conduit, and the outside of conveyance conduit is equipped with along its length Electric-heating belt is additionally provided with the insulating layer of cladding electric-heating belt and conveyance conduit on the outside of electric-heating belt.One end of electric-heating belt It is connect with distribution box, temperature controller, processor and display is typically provided in distribution box, display can show current electric-heating belt Temperature.Since the length of electric-heating belt is longer, using aforesaid way be merely able to detection electric-heating belt one end temperature, for away from Temperature from the electric-heating belt of distribution box remotely then can not be monitored accurately, namely cannot detect the whole fortune of electric-heating belt Row situation.To solve the above problems, generally being detected by way of detection hole is arranged on insulating layer in production, specifically The detection hole of a connection electric-heating belt to be opened up at interval of certain distance on insulating layer, staff utilizes measuring device The temperature of electric-heating belt is measured, it is whether normal come the work for judging electric-heating belt with this.
But using the scheme of the prior art, its detection efficiency is lower, generally requires to put into a large amount of personnel's progress accordingly Detection work, waste a lot of manpower and material resources.
Utility model content
In order to overcome the drawbacks described above under the prior art, the purpose of this utility model is to provide a kind of auxiliary examinations to set The auxiliary examination equipment of standby, electric tracer heating system and pipe-line transportation system, the utility model can show corresponding position in real time Electric-heating belt temperature, greatly shorten detection time, improve work efficiency.
The utility model provides a kind of auxiliary examination equipment, is arranged on electric-heating belt, including for detecting the electric companion The output end of the temperature-detecting device of tropical temperature, the temperature-detecting device is electrically connected with processor, the processor it is defeated Outlet is electrically connected with display device;It further include power supply device, the power supply device and the temperature-detecting device, processor and aobvious Showing device electrical connection.
Auxiliary examination equipment as described above, optionally, the temperature-detecting device are temperature sensor.
Auxiliary examination equipment as described above, optionally, the display device are group of four figures pipe.
Auxiliary examination equipment as described above, optionally, the power supply device are battery.
Auxiliary examination equipment as described above, optionally, the power supply device are solar panels.
Auxiliary examination equipment as described above, optionally, the power supply device are the conducting wire in the electric-heating belt.
The utility model also provides a kind of electric tracer heating system, including distribution box and the electric tracing being electrically connected with the distribution box Band is additionally provided with multiple as above described in any item auxiliary examination equipment, multiple auxiliary examination equipment on the electric-heating belt Equal spacing in length direction along the electric-heating belt is distributed.
Electric tracer heating system as described above, optionally, the electric-heating belt include two conducting wires disposed in parallel, described to lead The outside of line is equipped with fever sandwich layer, and the outside of the fever sandwich layer is also successively arranged insulating layer, shielded layer and restrictive coating.
Electric tracer heating system as described above is optionally additionally provided with corrosion-resistant coating on the outside of the restrictive coating.
The utility model also provides a kind of pipe-line transportation system, including conveyance conduit and described in any item electric tracings as above The outside of system, the conveyance conduit is equipped with the electric-heating belt, is additionally provided on the outside of the conveyance conduit and electric-heating belt Insulating layer.
Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system provided by the utility model, by being arranged for examining The temperature-detecting device of electric-heating belt temperature is surveyed, the output end of temperature-detecting device is electrically connected with processor, the output of processor End is electrically connected with display device, further includes providing the power supply device of electric energy for above-mentioned each device, to guarantee auxiliary examination equipment Normal operation.The utility model can show the electric-heating belt temperature of auxiliary examination equipment installation place in real time to be filled in display It setting, realizes the real-time monitoring to electric-heating belt temperature, convenient working personnel's checks, detection time is greatly shortened, It improves work efficiency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure diagram for the auxiliary examination equipment that an embodiment of the present invention provides;
Fig. 2 is the structure diagram of the auxiliary examination equipment that provides of an embodiment of the present invention in a state of use;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the structure diagram for the auxiliary examination equipment that another embodiment of the utility model provides;
Fig. 5 is the structure diagram for the electric-heating belt that an embodiment of the present invention provides;
Fig. 6 is the structure diagram for the pipe-line transportation system that an embodiment of the present invention provides.
Appended drawing reference:
110- temperature-detecting device;120- processor;
130- display device;140- power supply device;
150- shell;210- electric-heating belt;
211- conducting wire;212- fever sandwich layer;
213- insulating layer;214- shielded layer;
215- restrictive coating;220- distribution box;
230- temperature controller;310- conveyance conduit;
320- fastener.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.In the absence of conflict, following implementation Feature in example and embodiment can be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be It is connected directly, the mutual of connection inside two elements or two elements can also be can be indirectly connected through an intermediary Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this as the case may be Concrete meaning in type.
It should be noted that term " first ", " second " are only used for facilitating description different in the description of the present invention, Component, be not understood to indicate or imply ordinal relation, relative importance or implicitly indicate indicated technical characteristic Quantity." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.
Petroleum, natural gas generally carry out the production and transport of long range by pipeline, since transportation range is longer, to prevent pipe Flow media in road changes (such as decomposition, rotten, crystallization, cohesion are freezed) because temperature is too low, in production and transport Electric-heating belt generally is set in the outside of pipeline, electric-heating belt can convert electrical energy into thermal energy to compensate the flowing in pipeline Medium institute's dispersed heat in flow process, to maintain the optimal flow temperature of flow media.
Pipe-line transportation system in the prior art generally comprises conveyance conduit, and the outside of conveyance conduit is equipped with along its length Electric-heating belt is additionally provided with the insulating layer of cladding electric-heating belt and conveyance conduit on the outside of electric-heating belt.One end of electric-heating belt It is connect with distribution box, temperature controller, processor and display is typically provided in distribution box, display can show current electric-heating belt Temperature.Since the length of electric-heating belt is longer, using aforesaid way be merely able to detection electric-heating belt one end temperature, for away from Temperature from the electric-heating belt of distribution box remotely then can not be monitored accurately, namely cannot detect the whole fortune of electric-heating belt Row situation.To solve the above problems, generally being detected by way of detection hole is arranged on insulating layer in production, specifically The detection hole of a connection electric-heating belt to be opened up at interval of certain distance on insulating layer, staff utilizes measuring device The temperature of electric-heating belt is measured, it is whether normal come the work for judging electric-heating belt with this.
But using the scheme of the prior art, its detection efficiency is lower, generally requires to put into a large amount of personnel's progress accordingly Detection work, waste a lot of manpower and material resources.
In order to overcome the drawbacks described above under the prior art, the purpose of this utility model is to provide a kind of auxiliary examinations to set The auxiliary examination equipment of standby, electric tracer heating system and pipe-line transportation system, the utility model can show corresponding position in real time Electric-heating belt temperature, greatly shorten detection time, improve work efficiency.
It is described below in conjunction with the detailed content to the utility model of attached drawing, so that those skilled in the art can The more detailed content for understanding the utility model.
Embodiment one
Fig. 1 is the structure diagram for the auxiliary examination equipment that an embodiment of the present invention provides;Fig. 2 is the utility model one The structure diagram of the auxiliary examination equipment that embodiment provides in a state of use;Fig. 3 is the top view of Fig. 2;Please refer to Fig. 1-figure 3.The present embodiment provides a kind of auxiliary examination equipment, are arranged on electric-heating belt 210, including for detecting 210 temperature of electric-heating belt The output end of the temperature-detecting device 110 of degree, temperature-detecting device 110 is electrically connected with processor 120, the output of processor 120 End is electrically connected with display device 130;It further include power supply device 140, power supply device 140 and temperature-detecting device 110, processor 120 and display device 130 be electrically connected, for above each device electric energy is provided.
Specifically, temperature-detecting device 110 is used to detect the temperature of electric-heating belt 210;Processor 120 is used for treatment temperature Detection signal that detection device 110 is transmitted simultaneously issues control instruction to display device 130;Display device 130 is used for receiving area The control instruction of the reason transmission of device 120 simultaneously shows corresponding temperature;Power supply device 140 is temperature-detecting device 110, processor 120 and display device 130 electric energy is provided, detection device 110, processor 120 and display device can be accessed from any position Connection circuit between 130, or be electrically connected respectively with detection device 110, processor 120 and display device 130.
Temperature-detecting device 110, processor 120 and display device 130 can select arbitrary form under the prior art, this Temperature-detecting device 110 is temperature sensor in embodiment, and processor 120 is PLC controller, and display device 130 is four figures Code pipe.
Please continue to refer to Fig. 2-3, to be easily installed and dismantling, the present embodiment is additionally provided with for accommodating temperature-detecting device 110, processor 120 and the shell of display device 130 150, temperature-detecting device 110 and processor 120 are integrated in shell 150 Interior, display device 130 is arranged on the surface of shell 150.The connector of setting connection electric-heating belt 210 on shell 150, with side Just it mounts and dismounts, which is chosen as the part of any suitable under the prior arts such as clip.
Fig. 4 is the structure diagram for the auxiliary examination equipment that another embodiment of the utility model provides;Referring to figure 4..Another In one embodiment, temperature-detecting device 110 is temperature sensor, and processor 120 and display device 130 are with display function Temperature controller, power supply device 140 are electrically connected with temperature sensor and temperature controller.Each component is normal in the prior art in this embodiment The component seen, convenient for buying and assembling.
Auxiliary examination equipment provided in this embodiment, by the way that the temperature detection for detecting 210 temperature of electric-heating belt is arranged The output end of device 110, temperature-detecting device 110 is electrically connected with processor 120, the output end and display device of processor 120 130 electrical connections, further include providing the power supply device 140 of electric energy for above-mentioned each device, to guarantee the normal of auxiliary examination equipment Operation.The present embodiment can be shown 210 temperature of electric-heating belt of auxiliary examination equipment installation place in real time in display device 130 On, the real-time monitoring to 210 temperature of electric-heating belt is realized, convenient working personnel's checks, detection time is greatly shortened, It improves work efficiency.
In an optional embodiment, power supply device 130 is battery, the battery can for lithium ion battery or Lead storage battery is arranged that is, on shell 150 for placing battery specifically, battery can be integrated on shell 150 Mounting groove, in order to the installation and removal of battery.
In another optional embodiment, power supply device 130 be solar panels, using too can plate generate electric energy Resource has been saved for system power supply.
In other optional embodiments, power supply device 130 can also be the conducting wire 211 in electric-heating belt 210.Specifically , be typically provided two conducting wires 211 disposed in parallel in electric-heating belt 210, one is firewire in two conducting wires 211, it is another with For zero curve;The through-hole that a connection inner lead 211 can be opened up in advance on electric-heating belt 210 passes through through-hole using lead It is connected with conducting wire 211, the electric current in conducting wire 211 is introduced into auxiliary examination equipment, powers for auxiliary examination equipment.Using this The auxiliary examination equipment of kind mode does not need external power supply, reduces the setting of components.
Embodiment two
The present embodiment provides a kind of electric tracer heating systems, including distribution box and the electric-heating belt being electrically connected with distribution box 210, electricity Heating tape 210 is equipped with auxiliary examination equipment described in multiple embodiments one as above, and multiple auxiliary examination equipment are along electric-heating belt 210 equal spacing in length direction distribution.
Fig. 4 is the structure diagram for the electric-heating belt that an embodiment of the present invention provides;Referring to figure 4..Specifically, electric companion Tropical 210 include two conducting wires 211 disposed in parallel, and the outside of conducting wire 211 is equipped with fever sandwich layer 212, outside the sandwich layer 212 that generates heat Side is also successively arranged insulating layer 213, shielded layer 214 and restrictive coating 215.Wherein, the raw material of conducting wire 211 are with good conductive Property metallic copper, the raw material of fever sandwich layer 212 are fire-retardant PTC, and the material of insulating layer 213 and restrictive coating 215 is polyolefin, Shielded layer 214 is copper wire organization level.
In other implementations, to prevent the corrosion of electric-heating belt 210 to be additionally provided with anti-corrosion in the outside of restrictive coating 215 Lose layer.
Electric tracer heating system provided in this embodiment, by the way that the temperature detection dress for detecting 210 temperature of electric-heating belt is arranged 110 are set, the output end of temperature-detecting device 110 is electrically connected with processor 120, the output end and display device 130 of processor 120 Electrical connection, further includes providing the power supply device 140 of electric energy for above-mentioned each device, to guarantee the normal fortune of auxiliary examination equipment Row.The present embodiment can be shown 210 temperature of electric-heating belt of auxiliary examination equipment installation place in real time in display device 130 On, the real-time monitoring to 210 temperature of electric-heating belt is realized, convenient working personnel's checks, detection time is greatly shortened, It improves work efficiency.
Embodiment three
Fig. 5 is the structure diagram for the pipe-line transportation system that an embodiment of the present invention provides;Referring to figure 5..This implementation Example provides a kind of pipe-line transportation system, including electric tracer heating system described in conveyance conduit and embodiment as above two, conveyance conduit 310 Outside be equipped with electric-heating belt 210, be additionally provided with insulating layer in the outside of conveyance conduit 310 and electric-heating belt 210 and (do not show in figure Out).
Specifically, one end of electric-heating belt 210 connects distribution box 220, distribution box 220 and electric-heating belt in the present embodiment Temperature controller 230 is additionally provided between 210, the electric-heating belt 210 drawn from temperature controller 230 by fastener 320 with Conveyance conduit 310 is fixedly connected, and the part of any suitable under the prior art can be selected in fastener 320, for example, clip etc., this reality Example is applied not limit this.Multiple fasteners 320 are distributed along the equal spacing in length direction of conveyance conduit 310, specific interval distance From can be configured as needed.
In an optional embodiment, be arranged in the electric-heating belt 210 in the outside of conveyance conduit 310 can be it is a plurality of, A plurality of electric-heating belt 210 is parallel to each other, and along the outer peripheral surface equidistantly distributed of conveyance conduit 310, i.e., adjacent electric-heating belt 210 Between be spaced identical angle to guarantee being heated evenly for conveyance conduit 310.
The material of any suitable in the prior art such as aluminium silicate wool can be selected in the material of insulating layer, and material fills out in insulating layer Filling thickness should uniformly, to guarantee its whole thermal insulation property.
Pipe-line transportation system provided in this embodiment, by the way that the temperature detection for detecting 210 temperature of electric-heating belt is arranged The output end of device 110, temperature-detecting device 110 is electrically connected with processor 120, the output end and display device of processor 120 130 electrical connections, further include providing the power supply device 140 of electric energy for above-mentioned each device, to guarantee the normal of auxiliary examination equipment Operation.The present embodiment can be shown 210 temperature of electric-heating belt of auxiliary examination equipment installation place in real time in display device 130 On, the real-time monitoring to 210 temperature of electric-heating belt is realized, convenient working personnel's checks, detection time is greatly shortened, It improves work efficiency.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of auxiliary examination equipment is arranged on electric-heating belt, which is characterized in that including for detecting the electric-heating belt temperature The output end of the temperature-detecting device of degree, the temperature-detecting device is electrically connected with processor, the output end of the processor with Display device electrical connection;It further include power supply device, the power supply device and the temperature-detecting device, processor and display device Electrical connection.
2. auxiliary examination equipment according to claim 1, which is characterized in that the temperature-detecting device is temperature sensing Device.
3. auxiliary examination equipment according to claim 1, which is characterized in that the display device is group of four figures pipe.
4. auxiliary examination equipment according to claim 1, which is characterized in that the power supply device is battery.
5. auxiliary examination equipment according to claim 1, which is characterized in that the power supply device is solar panels.
6. auxiliary examination equipment according to claim 1, which is characterized in that the power supply device is in the electric-heating belt Conducting wire.
7. a kind of electric tracer heating system, including distribution box and the electric-heating belt being electrically connected with the distribution box, which is characterized in that described It is additionally provided on electric-heating belt multiple such as auxiliary examination equipment of any of claims 1-6, multiple auxiliary examinations Equipment is distributed along the equal spacing in length direction of the electric-heating belt.
8. electric tracer heating system according to claim 7, which is characterized in that the electric-heating belt includes two disposed in parallel Conducting wire, the outside of the conducting wire are equipped with fever sandwich layer, and the outside of the fever sandwich layer is also successively arranged insulating layer, shielded layer and shield Jacket layer.
9. electric tracer heating system according to claim 8, which is characterized in that be additionally provided with anticorrosion on the outside of the restrictive coating Layer.
10. a kind of pipe-line transportation system, which is characterized in that including conveyance conduit and as claimed in any one of claims 7-9 The outside of electric tracer heating system, the conveyance conduit is equipped with the electric-heating belt, in the outside of the conveyance conduit and electric-heating belt It is additionally provided with insulating layer.
CN201820775618.9U 2018-05-23 2018-05-23 Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system Active CN208331793U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820775618.9U CN208331793U (en) 2018-05-23 2018-05-23 Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820775618.9U CN208331793U (en) 2018-05-23 2018-05-23 Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system

Publications (1)

Publication Number Publication Date
CN208331793U true CN208331793U (en) 2019-01-04

Family

ID=64774883

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820775618.9U Active CN208331793U (en) 2018-05-23 2018-05-23 Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system

Country Status (1)

Country Link
CN (1) CN208331793U (en)

Similar Documents

Publication Publication Date Title
CN204855025U (en) Be used for cable intermediate head temperature field measuring temperature measurement testing system
CN206161744U (en) Oily static monitoring system is paid to oil depot
CN206312989U (en) Leakage detection components, heat exchange mechanisms and battery bag
CN111458607A (en) High-voltage cable sheath grounding circulation on-line monitoring terminal and on-line monitoring system
CN201992259U (en) Skin effect heat tracing system of condensing medium transfer pipeline
CN106969798A (en) Humiture monitoring device inside a kind of lightning arrester body
CN208331793U (en) Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system
CN105973499A (en) Method for measuring temperature of conductor externally covered by insulation material
CN210860247U (en) Closed pipeline heat tracing system
CN211903293U (en) High-power air duct heater
CN113950174B (en) Special heat tracing power cable
CN207730544U (en) Pipeline pressure testing device with temperature control in a kind of modularized production
CN205987430U (en) Electric tracing area
CN212301747U (en) High-voltage cable sheath grounding circulation on-line monitoring terminal and on-line monitoring system
CN209839494U (en) Heat insulation block
CN207965093U (en) A kind of battery life test device
CN207937010U (en) A kind of distributing transformer monitoring device
CN205487367U (en) Nuclear power station intelligence metal heated board
CN210112315U (en) Electric tracing band and electric tracing pipeline
CN209784179U (en) Cooling water shortage alarm device of graphite furnace atomic absorption spectrophotometer
CN203799463U (en) Oil tank top temperature monitoring system
CN207675909U (en) A kind of touch screen battery data logging device with cooling mechanism
CN202939525U (en) Constant-temperature protection box for power equipment testing instrument
CN208331785U (en) Auxiliary examination equipment, electric tracer heating system and pipe-line transportation system
CN108430124A (en) With the series-parallel heating cable from temp sensing function

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant