CN210427424U - Circular tube heat conductivity coefficient tester - Google Patents
Circular tube heat conductivity coefficient tester Download PDFInfo
- Publication number
- CN210427424U CN210427424U CN201921261164.4U CN201921261164U CN210427424U CN 210427424 U CN210427424 U CN 210427424U CN 201921261164 U CN201921261164 U CN 201921261164U CN 210427424 U CN210427424 U CN 210427424U
- Authority
- CN
- China
- Prior art keywords
- seamless steel
- thermal conductivity
- meter according
- measuring tube
- conductivity meter
- 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
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model relates to a circular tube heat conductivity coefficient tester, wherein a frame is fixed on a base, one end of a heater measuring tube is connected with one side of the frame, the other end of the heater measuring tube is suspended, the lower end of a lifting device is fixed with the base, the liftable part of the lifting device is connected with an insulation can, and the insulation can cover the heater measuring tube after descending; the heater survey pipe has a plurality of heating pipes including seamless steel pipe, heating pipe, inner cup baffle and thermocouple, the inside cover of seamless steel pipe, separates by the inner cup baffle between the heating pipe, and the seamless steel pipe outside is equipped with thermocouple mounting groove, is connected with many thermocouples in the thermocouple mounting groove, the utility model has the advantages of mechanical structure is simple compact, operation maintenance is convenient nimble, operation safe and reliable, the degree of accuracy is high.
Description
Technical Field
The utility model relates to a survey thermal insulation material coefficient of heat field provides a pipe coefficient of heat conductivity apparatus, specifically indicates the equipment to tubulose thermal insulation material coefficient of heat conductivity survey.
Background
The thermal conductivity coefficient (thermal conductivity) is a physical quantity reflecting the thermal conductivity of a material, is one of the main thermal performances of a thermal insulation material, is a main mark for identifying the thermal insulation performance effect of the material, and is not only a basis for evaluating the thermal characteristics of the material, but also a design basis for the application of the material. The heat conductivity coefficient of the heat-insulating material is clearly required to be measured in the Standard circular tube method for measuring the steady-state heat transfer property of the heat-insulating layer (GB/T10296-2008) issued in China.
At present, a testing instrument used for a laboratory generally has the following problems that firstly, an instrument heater is small in measuring pipe, the heat conductivity coefficient of a tubular heat-insulating material with a slightly large caliber cannot be measured, and secondly, a protective device is not added outside the heater measuring pipe and is influenced by ambient air convection, so that the measuring result is inaccurate and the repeatability is not high.
SUMMERY OF THE UTILITY MODEL
Purpose of the utility model
In order to solve the problem of measuring the big bore tubulose thermal insulation material coefficient of heat difficulty slightly to effectual improvement measuring result's the degree of accuracy and repeatability, the utility model provides a pipe coefficient of heat transfer apparatus.
Technical scheme
The utility model provides a pipe coefficient of heat conductivity apparatus which characterized in that: a frame is fixed on the base, one end of the heater measuring tube is connected with one side of the frame, the other end of the heater measuring tube is suspended, the lower end of the lifting device is fixed with the base, the lifting part of the lifting device is connected with the heat preservation box, and the heat preservation box can cover the heater measuring tube after descending;
the heater measuring tube comprises a seamless steel tube, heating tubes, an inner cover partition plate and thermocouples, the heating tubes are sleeved inside the seamless steel tube, the heating tubes are separated by the inner cover partition plate, thermocouple mounting grooves are formed in the outer sides of the seamless steel tube, and the thermocouples are connected in the thermocouple mounting grooves.
The lifting device comprises an electric push rod, a guide rod, a connecting plate and a sliding block, wherein the electric push rod and the guide rod are vertically connected to the base, the electric push rod is provided with a plurality of connecting plates, one end of each connecting plate is connected with the insulation can, the other end of each connecting plate is connected with the sliding block, the guide rod penetrates through the sliding block, and the upper end of the guide rod is connected with the top of the frame.
The guide rod is a plurality of.
And two ends of the seamless steel pipe are respectively connected with the end cover group.
The connection end of the heat insulation box, which is close to the heater measuring tube, and the frame is provided with a groove.
The diameter of the inner cover partition board is consistent with the inner diameter of the seamless steel pipe, and holes are formed in the inner cover partition board.
And a sealing buffer rubber strip is arranged on the periphery of the bottom of the heat insulation box.
The sealing buffer rubber strip comprises an upper edge and a lower edge, the upper edge and the lower edge are connected with the lower edge of the heat preservation box, the sealing buffer rubber strip is similar to a C-shaped structure, and the opening of the C-shaped structure is outward.
The thickness of the lower edge of the sealing buffer rubber strip is thinner and thinner from the left side of the C shape to the lower edge of the right side.
Advantages and effects
The utility model provides a pipe coefficient of heat conductivity apparatus has following advantage and beneficial effect:
(1) the tester adopts the novel joint operation of the connecting structure, the lifting system and the heat preservation box, and the automation of the equipment is effectively improved.
(2) The increase in the outer diameter of the heater measuring tube solves the problem of difficulty in measuring large-aperture samples.
(3) The utility model has the advantages of simple and compact structure, convenient flexibility, operation safe and reliable, the degree of accuracy height are maintained in the operation.
Drawings
FIG. 1 is a schematic view of the entire embodiment of the present invention;
FIG. 2 is a schematic view of a heater measuring tube structure of the present invention;
FIG. 3 is a schematic view of the structure of the middle lifting device of the present invention;
FIG. 4 is a schematic view of a middle sealing and buffering rubber strip of the present invention;
FIG. 5 is a schematic view of the connection between the heater measuring tube and the frame of the present invention;
fig. 6 is a connection diagram of the middle fixing sleeve of the utility model.
Description of reference numerals:
1. the device comprises a base, a frame, a heater measuring tube, a heat preservation box, a lifting device, a display screen, an end cover group, a seamless steel tube, a heating tube, an inner cover partition plate, a thermocouple mounting groove, a thermocouple, a guide rod, a sliding block, a connecting plate, an electric push rod, a control box, a sealing buffer rubber strip and a sealing buffer rubber strip, wherein the heater measuring tube is arranged at 3 degrees, the heat preservation box is arranged at 4 degrees, the lifting device is arranged at 5 degrees, the display screen.
Detailed Description
The invention will be further explained with reference to the drawings:
as shown in fig. 1, 2, 3, 5 and 6, a circular tube thermal conductivity coefficient tester, a frame 2 is fixed on a heat preservation box, one end of a heater measuring tube 3 is inserted into a fixing sleeve 21 and is fastened by a jackscrew, the fixing sleeve 21 is fixedly connected with one side of the frame 2 by a bolt, the other end of the heater measuring tube 3 is suspended, the lower end of a lifting device 5 is fixed with a base 1, the lifting part of the lifting device 5 is connected with the heat preservation box 4, and the heat preservation box 4 can cover the heater measuring tube 3 after descending; the round tube heat conductivity coefficient tester is provided with a shell, and the heat preservation box 4 and the shell of the round tube heat conductivity coefficient tester are both non-flower galvanized plates which are subjected to spraying treatment, so that rusting is prevented.
The heater measuring tube 3 comprises a seamless steel tube 8, heating tubes 9, an inner cover partition plate 10 and thermocouples 12, a plurality of heating tubes 9 are sleeved inside the seamless steel tube 8, the heating tubes 9 are tubular objects formed by winding resistance wires, the heating tubes 9 are separated by the inner cover partition plate 10, the heating tubes 9 are not arranged at the positions, close to the connecting ends with the frame 2, of the seamless steel tube 8, after the insulation can 4 is prevented from descending, grooves of the insulation can 4 are affected due to overhigh temperature, thermocouple mounting grooves 11 are formed in the outer side of the seamless steel tube 8, the thermocouple mounting grooves 11 are grooves of the seamless steel tube 8, a plurality of thermocouples 12 are connected in the thermocouple mounting grooves 11 and are covered by high-temperature-resistant heat-conducting glue, the high-temperature-resistant heat-conducting glue is SP9410 type heat-conducting glue of the Mipu brand, the thermocouples 12 are connected with the display screen 6 through, the control box 17 is used for controlling the temperature of the heater measuring tube 3 and the lifting device 5 to lift, and the connection between the control box 17 and the display screen 6 is the basic skill mastered by the technicians in the field, which is not the innovation of the utility model.
The number of the guide rods 13 is increased, so that the stability of the connection of the heat preservation box 4 can be enhanced, and the number of the guide rods 13 is preferably two.
Two ends of the seamless steel tube 8 are respectively connected with the end cover group 7, and the end cover group 7 is used for heat insulation.
The insulation can 4 is provided with a groove close to the connection end of the heater measuring tube 3 and the frame 2. When the incubator 4 descends, the heater measuring tube 3 just enters the groove.
The diameter of the inner cover partition plate 10 is consistent with the inner diameter of the seamless steel pipe 8, a hole is formed in the inner cover partition plate 10 and used for allowing an electric wire or a resistance wire to penetrate through, and the inner cover partition plate 10 is used for heat insulation.
As shown in fig. 4: the periphery of the bottom of the heat preservation box 4 is provided with a sealing buffer rubber strip 18.
The sealing buffer rubber strip 18 comprises an upper edge 19 and a lower edge 20, the sealing buffer rubber strip 18 is connected to the lower edge of the heat preservation box 4, the sealing buffer rubber strip 18 is similar to a C-shaped structure, and the opening of the C-shaped structure is outward.
The thickness of the lower edge 20 of the sealing buffer rubber strip is thinner and thinner from the left side of the C shape to the lower edge 19 of the right side. If 20 are the same thickness below the joint strip, perhaps the right side is thicker than the left side, the C type is out of shape easily, and insulation can 4 falls the back and leads to joint strip 18 to warp the shape different, influences life, uses 20 and from "C" type left side to 19 thickness this kind of structures below the right side below the joint strip and helps insulation can seal and keep warm, has played the cushioning effect when insulation can 4 falls, is unlikely to collide with base 1 firmly.
The utility model discloses the working process is as follows:
sleeving a sample on a heater measuring tube 3, wherein for the sample with the diameter larger than that of the heater measuring tube 3, a part of the sample can be cut and sleeved on the heater measuring tube 3, so that the inner surface of the sample is tightly attached to the outer surface of the heater measuring tube, four thermocouples are fixed on the outer surface of the heater measuring tube 3 at the position of a heating tube 9 by using aluminum foil tapes, the position of each thermocouple is the middle point of each equal division in the quartering of the length of the metering section, and the angular distance between the adjacent thermocouples ranges from 45 degrees to 90 degrees; the heat insulation box 4 is descended to the base 1 by using a button on the control box 17, so that the test process is in a relatively sealed environment, when the change of the test environmental temperature meets the requirement of the test condition, the heating pipe is started, the temperature of the inner surface and the outer surface of the sample is measured by the thermocouple 12, signals are transmitted to the display screen 6 by signal wires, and when the temperature reaches the set temperature and is in a steady state condition, the data required to be measured is measured to obtain the heat conductivity coefficient of the heat insulation material sample.
Claims (9)
1. The utility model provides a pipe coefficient of heat conductivity apparatus which characterized in that: a frame is fixed on the base, one end of the heater measuring tube is connected with one side of the frame, the other end of the heater measuring tube is suspended, the lower end of the lifting device is fixed with the base, the lifting part of the lifting device is connected with the heat preservation box, and the heat preservation box can cover the heater measuring tube after descending;
the heater measuring tube comprises a seamless steel tube, heating tubes, an inner cover partition plate and thermocouples, the heating tubes are sleeved inside the seamless steel tube, the heating tubes are separated by the inner cover partition plate, thermocouple mounting grooves are formed in the outer sides of the seamless steel tube, and the thermocouples are connected in the thermocouple mounting grooves.
2. The round tube thermal conductivity meter according to claim 1, wherein: the lifting device comprises an electric push rod, a guide rod, a connecting plate and a sliding block, wherein the electric push rod and the guide rod are vertically connected to the base, the electric push rod is provided with a plurality of connecting plates, one end of each connecting plate is connected with the insulation can, the other end of each connecting plate is connected with the sliding block, the guide rod penetrates through the sliding block, and the upper end of the guide rod is connected with the top of the frame.
3. The round tube thermal conductivity meter according to claim 2, wherein: the guide rod is a plurality of.
4. The round tube thermal conductivity meter according to claim 1, wherein: and two ends of the seamless steel pipe are respectively connected with the end cover group.
5. The round tube thermal conductivity meter according to claim 1, wherein: the connection end of the heat insulation box (4) close to the heater measuring tube and the frame is provided with a groove.
6. The round tube thermal conductivity meter according to claim 1, wherein: the diameter of the inner cover partition board is consistent with the inner diameter of the seamless steel pipe, and holes are formed in the inner cover partition board.
7. The round tube thermal conductivity meter according to claim 1, wherein: and a sealing buffer rubber strip is arranged on the periphery of the bottom of the heat insulation box.
8. The round tube thermal conductivity meter according to claim 7, wherein: the sealing buffer rubber strip comprises an upper edge and a lower edge, the upper edge and the lower edge are connected with the lower edge of the heat preservation box, the sealing buffer rubber strip is similar to a C-shaped structure, and the opening of the C-shaped structure is outward.
9. The round tube thermal conductivity meter according to claim 8, wherein: the thickness of the lower edge of the sealing buffer rubber strip is thinner and thinner from the left side of the C shape to the lower edge of the right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261164.4U CN210427424U (en) | 2019-08-06 | 2019-08-06 | Circular tube heat conductivity coefficient tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261164.4U CN210427424U (en) | 2019-08-06 | 2019-08-06 | Circular tube heat conductivity coefficient tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210427424U true CN210427424U (en) | 2020-04-28 |
Family
ID=70385153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921261164.4U Active CN210427424U (en) | 2019-08-06 | 2019-08-06 | Circular tube heat conductivity coefficient tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210427424U (en) |
-
2019
- 2019-08-06 CN CN201921261164.4U patent/CN210427424U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109580162B (en) | high-enthalpy flow field heat flow measuring device used in strong electromagnetic environment | |
| CN103293182A (en) | Automatic heat conductivity coefficient tester through protective heat flow meter method and detection method | |
| CN210427424U (en) | Circular tube heat conductivity coefficient tester | |
| CN106940230B (en) | Nine-hole total temperature measuring probe | |
| CN107894440B (en) | Concrete thermal expansion coefficient measuring device and measuring method | |
| CN203455295U (en) | Phase-transition temperature tester | |
| CN208188025U (en) | A kind of device using infrared thermal imaging method measurement unsaturated soil thermal coefficient | |
| CN219162029U (en) | Novel cement-based thermal insulation material thermal insulation performance test equipment | |
| CN210221721U (en) | Creep measuring device for plastic pipe | |
| CN108168737B (en) | Special isolation clamping device for thin film thermocouple calibration | |
| CN202649146U (en) | Device for measuring thermal expansion coefficient of material | |
| CN215218636U (en) | Detection equipment for heat insulation performance of heat insulation material | |
| CN102494805A (en) | Detection bar used for testing different thickness temperature changes in external wall brick body | |
| CN212082635U (en) | Clamp for detecting temperature of cathode steel bar of electrolytic cell | |
| CN210604475U (en) | Heat conductivity coefficient testing device | |
| CN105352881B (en) | A kind of vacuum heat-insulating plate and its aging testing system | |
| CN211318082U (en) | Outdoor soil sample moisture content measuring device | |
| CN203881849U (en) | System for measuring surface resistivity of material under high-temperature condition | |
| CN218272066U (en) | A test device for testing high temperature tunnel concrete material heat conductivity | |
| CN209927663U (en) | Density sensor high-low temperature experimental device | |
| CN207703755U (en) | A kind of thermal expansion coefficient of concrete measuring device | |
| CN205120255U (en) | NTC temperature sensor | |
| CN103529073B (en) | A kind of asymmetric hot plate instrument | |
| CN215910017U (en) | Special protection device of wireless temperature recorder calibration | |
| CN101545879A (en) | Cable expansion factor determination instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |