CN210037680U - Profile heat-insulating property contrast demonstration device - Google Patents

Profile heat-insulating property contrast demonstration device Download PDF

Info

Publication number
CN210037680U
CN210037680U CN201920652881.3U CN201920652881U CN210037680U CN 210037680 U CN210037680 U CN 210037680U CN 201920652881 U CN201920652881 U CN 201920652881U CN 210037680 U CN210037680 U CN 210037680U
Authority
CN
China
Prior art keywords
heat
heat transfer
disc
heat conduction
solidification body
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.)
Expired - Fee Related
Application number
CN201920652881.3U
Other languages
Chinese (zh)
Inventor
徐峰
汪多华
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.)
DONGYING SHENGMING GLASS Co Ltd
Original Assignee
DONGYING SHENGMING GLASS 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 DONGYING SHENGMING GLASS Co Ltd filed Critical DONGYING SHENGMING GLASS Co Ltd
Priority to CN201920652881.3U priority Critical patent/CN210037680U/en
Application granted granted Critical
Publication of CN210037680U publication Critical patent/CN210037680U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses a section bar heat-proof quality contrast presentation device, including heating device, first thermal-insulated heat preservation cover, heat transfer device, heat conduction solidification body splendid attire ware and heat conduction solidification body, place on the heating device first thermal-insulated heat preservation cover, place on the first thermal-insulated heat preservation cover heat transfer device, it has the round hole to open on the first thermal-insulated heat preservation cover bottom surface, the diameter of round hole is less than heat transfer device's bottom surface diameter, heating device with heat transfer device can relative rotation, the last section bar that awaits measuring of placing of heat transfer device, the section bar top that awaits measuring sets up heat conduction solidification body splendid attire ware, the heat conduction solidification body is arranged in the heat conduction solidification body splendid attire ware. The utility model discloses when carrying out section bar heat-proof quality contrast demonstration, heating device and heat transfer device can the relative rotation, make the section bar that awaits measuring be heated evenly, have reduced because each position heating temperature of heating device inconsistent measuring error that leads to.

Description

Profile heat-insulating property contrast demonstration device
Technical Field
The utility model relates to a section bar detects technical field, concretely relates to section bar heat-proof quality contrast presentation device.
Background
The test of the thermal insulation performance of the general section is carried out in a laboratory by professional personnel for qualitative or quantitative test measurement. Although the test measurement has high accuracy, the test measurement takes a long time and is high in price, and a common user is suspected of large and small materials when carrying out professional detection during section bar selection. For the ordinary users, only qualitative comparison is needed when deciding whether to select a certain section bar, so how to determine the heat insulation performance of the section bar more efficiently, conveniently and cheaply is needed.
Chinese patent document CN 204903434U discloses a contrast device for detecting heat-insulating property of platy building materials, including a box made as a cuboid, the box is composed of a heat insulating plate, the top surface of the box has two long-strip slots symmetrically arranged, the width direction of inserting length direction and box is consistent, an electric heating pipe is arranged between the two slots, the electric heating pipe is horizontally arranged along the width direction of the box, the electric heating pipe is connected at the central part of length direction of the box, one side of the two slots far away from the electric heating pipe is provided with a group of temperature probes for measuring temperature of the outer side surface of platy building materials, the front surface of the box is provided with two temperature displays, and the two temperature displays are respectively electrically connected with a group of temperature probes. Although the electric heating pipe of the device is made into a circuitous serpentine pipeline and is positioned at the central part of the length direction of the box body, the section bar slots are also symmetrically arranged, the temperature of each part of the electric heating pipe cannot be completely consistent, and the heating effect of each section bar to be measured is difficult to ensure to be the same.
Chinese patent document CN 206002469U discloses a section bar heat transfer performance detection display device, which comprises a base, wherein a heat conduction seat conducting heat through metal is arranged on the base, one end of the heat conduction seat is connected with a heat source device, the other end of the heat conduction seat is provided with a thermometer mounting part, and a fixing device for fixing a test piece is further arranged at one end of the heat conduction seat provided with the thermometer mounting part; the device also comprises at least one temperature detector arranged on the temperature detector installation part and at least one temperature detector arranged on the test piece. The temperature measurement meter is installed on the heat conduction seat, can show the temperature value that the section bar is close to heat source one end, keeps away from heat source one end and inserts the temperature measurement meter again, through the contrast of both ends difference in temperature, can show the heat-proof quality of bridge cut-off aluminium, and is convenient directly perceived. Although the heat conducting seat adopts a plate-shaped structure, the test piece can be conveniently fixed and tightly attached to ensure heat transfer, the temperature of each position of the heat conducting seat is not completely consistent, and the device still cannot ensure that each section to be tested can be heated uniformly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can make each section bar that awaits measuring be heated even section bar heat-proof quality contrast presentation device to the defect that prior art exists exactly.
The technical scheme of the utility model is that:
the utility model provides a section bar heat-proof quality contrast presentation device, includes heating device, first thermal-insulated heat preservation cover, heat transfer device, heat conduction solidification body splendid attire ware and heat conduction solidification body, place on the heating device first thermal-insulated heat preservation cover, place on the first thermal-insulated heat preservation cover heat transfer device, it has the round hole to open on the first thermal-insulated heat preservation cover bottom surface, the diameter of round hole is less than heat transfer device's bottom surface diameter, heating device with heat transfer device can relative rotation, the last section bar that awaits measuring of placing of heat transfer device, the section bar top that awaits measuring sets up heat conduction solidification body splendid attire ware, heat conduction solidification body arranges in the heat conduction solidification body splendid attire ware.
Further, heating device includes quick-witted case, thermal-insulated dish and heating wire, the quick-witted incasement sets up the motor, a motor output shaft connects a turbine, the turbine connects the worm of a vertical setting, worm one end is fixed with bearing and bearing frame, another termination pinion, the pinion connects a gear wheel, the gear wheel center connects a pivot, pivot one end is fixed with bearing and bearing frame, the pivot other end stretches out quick-witted case to through the shaft coupling with the connecting axle of thermal-insulated dish is connected, the bottom surface is placed on the thermal-insulated dish the heating wire.
Optionally, the heating device includes a case, a heat insulation disc and an electric heating wire, the heat insulation disc is a disc with a tubular boss at the center, the inner ring of the tubular boss is fixedly connected with a bearing, the electric heating wire is placed on the outer ring of the tubular boss located at the upper bottom surface of the disc, and the tubular boss located at the lower bottom surface of the disc is supported on the case; the machine is characterized in that a motor is arranged in the machine case, the output shaft of the motor is connected with a turbine, the turbine is connected with a vertically arranged worm, one end of the worm is fixed by a bearing and a bearing seat, the other end of the worm is connected with a small gear, the small gear is connected with a large gear, the center of the large gear is connected with a rotating shaft, one end of the rotating shaft is fixed by a bearing and a bearing seat, and the other end of the rotating shaft extends out of the machine case and is connected with the lower bottom surface of the.
Furthermore, the heat transfer device comprises a heat transfer disc, a grid is fixedly arranged on the heat transfer disc in an inserted mode, the grid divides the heat transfer disc into equal parts, a longitudinal groove is formed in the grid, and a positioning baffle for fixing the section to be detected is inserted in the groove.
Furthermore, the height of the grid is not larger than that of the section bar to be detected, and the height of the positioning baffle is consistent with that of the grid.
Furthermore, a second flange is arranged on the lower bottom surface of the heat conduction solid container, the heat conduction solid container is in inserted fit with the upper part of the area defined by the grids and the positioning baffle and is not in contact with the heat transfer plate, and the upper bottom surface of the heat conduction solid container is of a disc-shaped structure.
Furthermore, the heating device is electrically connected with a temperature control switch.
Furthermore, temperature sensing patches are respectively arranged on the upper bottom surface of the heat transfer disc and the upper bottom surface of the heat conduction solidified body container.
Furthermore, a timing panel is arranged on the case.
Furthermore, the upper cover of the heat transfer plate is provided with a second heat insulation cover, the second heat insulation cover is provided with vent holes, and the second heat insulation cover is made of transparent materials.
Compared with the prior art, the utility model, have following advantage: the utility model discloses when carrying out section bar heat-proof quality contrast demonstration, heating device and heat transfer device can the relative rotation, make the section bar that awaits measuring be heated evenly, have reduced because each position heating temperature of heating device inconsistent measuring error that leads to.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a front view of the internal construction of FIG. 1;
FIG. 3 is a schematic structural view of a heating device according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the internal structure of a heating apparatus according to embodiment 1 of the present invention;
fig. 5 is a front view of the main structure of embodiment 3 of the present invention;
FIG. 6 is a schematic view of the heat transfer unit of the present invention connected to a grid;
FIG. 7 is a schematic view of the positioning baffle of the present invention;
FIG. 8 is a schematic structural view of the heat-conducting solidified body container of the present invention;
FIG. 9 is a schematic view of the internal structure of the case of the present invention;
FIG. 10 is a sectional view of a second heat-insulating cover of the present invention;
in the figure: 1. the heating device comprises a heating device, 2, a first heat insulation and heat preservation cover, 3, a heat transfer device, 4, a heat conduction solidification body container, 5, a heat conduction solidification body, 6, a case, 7, a bearing, 8, a second heat insulation and heat preservation cover, 9, a vent hole, 100, a motor, 101, a heat insulation disc, 102, an electric heating wire, 103, a connecting shaft, 104, a turbine, 105, a worm, 106, a pinion, 107, a gearwheel, 108, a rotating shaft, 109, a coupling, 110, a tubular boss, 200, a heat transfer disc, 201, a first flange, 202, a grid, 203, a groove, 204, a positioning baffle, 400 and a second flange.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
Referring to fig. 1 to 4 and fig. 9 to 10, a profile thermal insulation performance comparison demonstration device includes a heating device 1, a first thermal insulation cover 2, a heat transfer device 3, a thermal conductive solidification body container 4 and a thermal conductive solidification body 5, the first thermal insulation cover 2 is placed on the heating device 1, the heat transfer device 3 is placed on the first thermal insulation cover 2, the heating device 1 and the heat transfer device 3 can rotate relatively, a profile to be tested is placed on the heat transfer device 3, the thermal conductive solidification body container 4 is arranged above the profile to be tested, and the thermal conductive solidification body 5 is placed in the thermal conductive solidification body container 4.
The heating device 1 comprises a case 6, a heat insulation disc 101 and an electric heating wire 102, the first heat insulation cover 6 is in a circular truncated cone shape, the upper bottom surface of the circular truncated cone is concave to the center of the circular truncated cone, a circular hole 600 is formed in the upper bottom surface of the circular truncated cone, and the diameter of the circular hole 600 is smaller than that of the bottom surface of the heat transfer device 2; a connecting shaft 103 is bonded on the lower bottom surface of the heat insulation disc 101, or a through hole is arranged in the center of the heat insulation disc 101, threads are processed on the connecting shaft 103, the connecting shaft 103 penetrates through the through hole and stretches across two sides of the heat insulation disc 101, two ends of the connecting shaft 103 are respectively fixed with the heat insulation disc 101 through nuts, and a heat insulation cover is arranged on the nuts on the upper bottom surface of the heat insulation disc 101 to prevent the nuts from being heated; the motor 100 is arranged in the case 6, the output shaft of the motor 100 is connected with a turbine 104, the turbine 104 is connected with a vertically arranged worm 105 (the spiral angle of the worm is more than 4 degrees 38' 39 "), one end of the worm 105 is fixed with a bearing seat by a bearing, the other end of the worm is connected with a pinion 106, the pinion 106 is connected with a bull gear 107, the center of the bull gear 107 is connected with a rotating shaft 108, one end of the rotating shaft 108 is fixed with the bearing seat by a bearing, the other end of the rotating shaft 108 is connected with a connecting shaft 103 of the heat insulation disc 101 by a coupling 109, and the disc.
The upper cover of the heat transfer device 3 is connected with the second heat insulation cover 8 through threads, the second heat insulation cover 8 is provided with vent holes 9 for preventing the overlarge gas pressure in the second heat insulation cover 8, the second heat insulation cover 8 is made of transparent materials, and the melting condition of the heat conduction solidified body 5 in the second heat insulation cover 8 can be conveniently seen.
The heat transfer device and the heat conduction solidification body container are made of heat transfer materials, and the heat transfer materials can be made of metal materials with quick heat conduction and small heat loss, such as aluminum alloy materials; the first heat-insulating cover and the second heat-insulating cover are made of heat-insulating materials which have good heat-insulating property and are insulating and can play a certain supporting role, such as ceramic materials or a layer of heat-insulating materials sandwiched between two metal layers; the heat-conducting solidified body can be made of materials which can be melted when heated at different melting temperatures, such as common paraffin and chocolate in life, according to the heat resistance requirement of the section to be detected.
In addition, in order to measure the profiles with different heat insulating properties, the heating device 1 is electrically connected with a temperature control switch, and the temperature of the heating device 1 can be set according to requirements through the temperature control switch. The utility model discloses a device can place the polylith section bar that awaits measuring and test the contrast, can be used for the same model section bar of different producers, also can be used for disconnected hot, thermal-insulated effect demonstration of the different model section bars of same producer. The timing panel can be arranged on the case at the same time, so that the test time is convenient to monitor, for some large pieces, only one heat transfer device can be placed on each test, and the melting condition of the heat-conducting solidified body can be observed by setting the same temperature and the same time through a control variable method by virtue of the timing panel, so that the qualitative conclusion of the heat-insulating property of different sectional materials can be obtained; in addition, the specific connection mode of the temperature control switch and the timing panel belongs to the prior art and is not described again.
If a simple quantitative measurement function is needed, temperature sensing patches capable of displaying temperature ranges can be respectively arranged on the upper bottom surface of the heat transfer device 3 and the upper bottom surface of the heat conduction solidification body container 4, and the heat insulation effect of the section bar can be visually and quantitatively seen by calculating the temperature difference between the upper bottom surface of the heat conduction solidification body container 4 and the upper bottom surface of the heat transfer disc 200.
The working principle is as follows: the motor drives the turbine to rotate, the turbine is meshed with the worm vertical to the ground direction, the axial rotation of the motor is converted into the rotation of the worm vertical to the ground direction, the worm rotates to drive the pinion on the worm to rotate, the pinion is meshed with the gearwheel to play a speed reduction role (the specific speed reduction ratio can be adjusted by adjusting the gear ratio of the big gearwheel to the small gearwheel according to the needs of users), as the gear does not change the rotation direction, the rotating shaft at the center of the gearwheel rotates vertical to the ground direction, the heat insulation disc and the electric heating wire on the heat insulation disc are driven to rotate, the heat transfer device is positioned above the first heat insulation and heat preservation cover and keeps a static state, thereby realizing that the heating device rotates relative to the heat transfer device, the section bar to be tested is placed on the heat transfer device, the heat conduction solidification body container is arranged at the other end along, after the machine is started, the heat insulation effect of the section to be detected can be visually seen by observing and comparing the melting condition of the heat conduction solidified body.
Example 2
On the basis of embodiment 1, in order to make the profile to be tested more stably placed on the heat transfer device 3, the design is further as follows: referring to fig. 6 to 8, the heat transfer device 3 includes a heat transfer plate 200, a first flange 201 is disposed on the upper bottom surface of the heat transfer plate 200, a grid 202 capable of being inserted is adhered on the heat transfer plate 200, the grid 202 divides the heat transfer plate 200 into blocks with uniform size, a profile to be tested is placed in the blocks, a longitudinal groove 203 is disposed on the grid 202, a positioning baffle 204 for fixing the profile to be tested can be inserted into the groove 203, the height of the grid 202 is not greater than the height of the profile to be tested, the height of the positioning baffle 204 is consistent with the height of the grid 202, the positioning baffle 204 is only used for positioning, when the width of the profile to be tested is smaller than the width of the blocks, the profile to be tested is positioned, and the specific style of the positioning baffle; the grid and the positioning baffle are made of heat insulating materials. In addition, other fixing devices which are commercially available and can enable the section bar to be tested to be more stably placed on the heat transfer device 3 can be adopted, and the details are not described here.
The lower bottom surface of the heat conduction solidification body container 4 is provided with a second flange 400, the heat conduction solidification body container 4 is inserted and matched with the upper part of a block surrounded by the grid 202 and the positioning baffle 204 and is not contacted with the heat transfer plate 200, and the upper bottom surface of the heat conduction solidification body container 4 is of a disc-shaped structure.
Example 3
Referring to fig. 5, the connection between the heating device 1 and the heat transfer device 3 of embodiment 1 is improved, and in addition to embodiment 1, the other end of the rotating shaft 108 extends out of the cabinet and is connected to the lower bottom surface of the heat transfer device 3 through a bearing 7.
Specifically, the heating device 1 includes a case 6, a heat insulation disc 101 and heating wires 102, the heat insulation disc 101 is a circular disc with a tubular boss 110 at the center, a bearing 7 is bonded to the inner ring of the tubular boss 110, the circular disc defines the upper part and the lower part of the tubular boss 110, the heating wires 102 are placed on the outer ring of the upper part of the tubular boss 110, and the lower part of the tubular boss 110 is supported on the case 6; the motor 100 is arranged in the case 6, the output shaft of the motor 100 is connected with a turbine 104, the turbine 104 is connected with a vertically arranged worm 105, one end of the worm 105 is fixed by a bearing and a bearing seat, the other end of the worm 105 is connected with a small gear 106, the small gear 106 is connected with a large gear 107, the center of the large gear 107 is connected with a rotating shaft 108, one end of the rotating shaft 108 is fixed by a bearing and a bearing seat, the other end of the rotating shaft 108 extends out of the case 6 and is connected with the lower bottom surface of the heat transfer device 3 through a bearing 7, the specific connection mode refers to the connection between the.
The working principle is as follows: this embodiment operates differently from embodiment 1 in that the shaft extends out of the housing and is connected to the heat transfer device by means of a bearing, the inner race of which rotates, but the outer race of which is relatively stationary, i.e. the heating device is stationary, and the heat transfer device rotates relative to the heating device.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a section bar heat-proof quality contrast presentation device which characterized in that: including heating device, first thermal-insulated heat preservation cover, heat transfer device, heat conduction solidification body splendid attire ware and heat conduction solidification body, place on the heating device first thermal-insulated heat preservation cover, place on the first thermal-insulated heat preservation cover heat transfer device, it has the round hole to open on the first thermal-insulated heat preservation cover bottom surface, the diameter of round hole is less than heat transfer device's bottom surface diameter, heating device with heat transfer device can relative rotation, place the section bar that awaits measuring on the heat transfer device, the section bar top that awaits measuring sets up heat conduction solidification body splendid attire ware, the heat conduction solidification body is arranged in the heat conduction solidification body splendid attire ware.
2. A profile thermal insulation performance contrast demonstration device according to claim 1, characterized in that: heating device includes quick-witted case, thermal-insulated dish and heating wire, quick-witted incasement sets up the motor, motor output shaft connects a turbine, the turbine connects the worm of a vertical setting, worm one end is fixed with bearing and bearing frame, another termination pinion, the pinion connects a gear wheel, the gear wheel center connects a pivot, pivot one end is fixed with bearing and bearing frame, the pivot other end stretches out quick-witted case to through the shaft coupling with the connecting axle of thermal-insulated dish is connected, bottom surface is placed on the thermal-insulated dish the heating wire.
3. A profile thermal insulation performance contrast demonstration device according to claim 1, characterized in that: the heating device comprises a case, a heat insulation disc and an electric heating wire, wherein the heat insulation disc is a disc with a tubular boss at the center, the inner ring of the tubular boss is fixedly connected with a bearing, the electric heating wire is placed on the outer ring of the tubular boss positioned on the upper bottom surface of the disc, and the tubular boss positioned on the lower bottom surface of the disc is supported on the case; the machine is characterized in that a motor is arranged in the machine case, the output shaft of the motor is connected with a turbine, the turbine is connected with a vertically arranged worm, one end of the worm is fixed by a bearing and a bearing seat, the other end of the worm is connected with a small gear, the small gear is connected with a large gear, the center of the large gear is connected with a rotating shaft, one end of the rotating shaft is fixed by a bearing and a bearing seat, and the other end of the rotating shaft extends out of the machine case and is connected with the lower bottom surface of the.
4. A profile thermal insulation performance contrast demonstration device according to claim 2 or 3, characterized in that: the heat transfer device comprises a heat transfer disc, wherein a grid is fixedly arranged on the heat transfer disc in an inserted mode, the grid divides the heat transfer disc into equal parts, a longitudinal groove is formed in the grid, and a positioning baffle for fixing the section to be detected is inserted into the groove.
5. A profile thermal insulation performance contrast demonstration device according to claim 4, characterized in that: the height of the grid is not larger than that of the section bar to be detected, and the height of the positioning baffle is consistent with that of the grid.
6. A profile thermal insulation performance contrast demonstration device according to claim 5, characterized in that: the lower bottom surface of the heat conduction solidification body container is provided with a second flange, the heat conduction solidification body container is in plug fit with the upper part of an area defined by the grid and the positioning baffle and is not in contact with the heat transfer plate, and the upper bottom surface of the heat conduction solidification body container is of a disc-shaped structure.
7. A profile thermal insulation performance contrast demonstration device according to claim 1, characterized in that: the heating device is electrically connected with a temperature control switch.
8. A profile thermal insulation performance contrast demonstration device according to claim 4, characterized in that: the upper bottom surface of the heat transfer disc and the upper bottom surface of the heat conduction solidified body container are respectively provided with a temperature sensing patch.
9. A profile thermal insulation performance contrast demonstration device according to claim 2, characterized in that: the case is provided with a timing panel.
10. A profile thermal insulation performance contrast demonstration device according to claim 4, characterized in that: the heat transfer plate is characterized in that a second heat insulation cover is arranged on the upper cover of the heat transfer plate, vent holes are formed in the second heat insulation cover, and the second heat insulation cover is made of transparent materials.
CN201920652881.3U 2019-05-08 2019-05-08 Profile heat-insulating property contrast demonstration device Expired - Fee Related CN210037680U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920652881.3U CN210037680U (en) 2019-05-08 2019-05-08 Profile heat-insulating property contrast demonstration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920652881.3U CN210037680U (en) 2019-05-08 2019-05-08 Profile heat-insulating property contrast demonstration device

Publications (1)

Publication Number Publication Date
CN210037680U true CN210037680U (en) 2020-02-07

Family

ID=69364122

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920652881.3U Expired - Fee Related CN210037680U (en) 2019-05-08 2019-05-08 Profile heat-insulating property contrast demonstration device

Country Status (1)

Country Link
CN (1) CN210037680U (en)

Similar Documents

Publication Publication Date Title
CN103076256B (en) The pick-up unit detected for iron ore raw material and method
JP2011053077A5 (en)
CN201281694Y (en) Device for measuring material thermal coefficient
CN110243483A (en) A kind of hot rotatory test temperature measuring equipment of engine rotor part and temp measuring method
CN101118218A (en) Vieri experiment thermostats
CN110823494A (en) Thermal response arc wind tunnel test device and method for heat-insulating material
CN210037680U (en) Profile heat-insulating property contrast demonstration device
CN203455295U (en) Phase-transition temperature tester
CN204924856U (en) Detection apparatus for be used for surveing hot melt adhesive viscosity
CN203772684U (en) Freezing point osmotic pressure tester with double probes
CN209342559U (en) Constant-temperature rotary viscosimeter
CN210322076U (en) Detection apparatus convenient for multi-angle detection for temperature test
CN104372556B (en) Efficient dyeing instrument without heat-conducting media
CN107817264B (en) Automatic inclination point detector by controllable temperature difference method
CN105717362A (en) Measuring device and method for resistivity
CN105572160B (en) A kind of modularity crude oil solidifying point measuring device and measuring method thereof
CN213933463U (en) Visual organic material thermogravimetric analyzer
CN204924997U (en) Load heat distortion temperature tester
CN2819193Y (en) Device for measuring pan body surface temeprature and electric heating cooker therewith
CN2921801Y (en) Double-indicator coaxle double-temperature displaying thermometer
CN207318394U (en) A kind of Measured Results of Thermal Conductivity experimental system
CN215727830U (en) Test machine of quick replacement cold drawing
CN205786415U (en) Strip spiral type sample thermo-sensitive property detection device
CN201729868U (en) Reversible vacuum substrate surface temperature measuring device
CN215768340U (en) Concrete sealing device for measuring concrete autogenous volume deformation test

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200207