CN212083291U - Long defeated heat supply network steam insulating tube thermal behavior testing arrangement - Google Patents
Long defeated heat supply network steam insulating tube thermal behavior testing arrangement Download PDFInfo
- Publication number
- CN212083291U CN212083291U CN202020767807.9U CN202020767807U CN212083291U CN 212083291 U CN212083291 U CN 212083291U CN 202020767807 U CN202020767807 U CN 202020767807U CN 212083291 U CN212083291 U CN 212083291U
- Authority
- CN
- China
- Prior art keywords
- heat
- pipe
- oil
- testing
- heating device
- 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
Abstract
The utility model discloses a long heat transmission network steam heat preservation pipe thermal performance testing device, which comprises a heat conduction oil tank, a heat conduction oil heating device, a heat conduction oil pipe and a heat preservation pipe testing mechanism; the heat conduction oil pipe comprises an inflow pipe which is sequentially communicated with a heat conduction oil tank, a heat conduction oil heating device and a heat insulation pipe testing mechanism inflow end, an outflow pipe which is sequentially communicated with a heat insulation pipe testing mechanism outflow end, a heat conduction oil heating device and a heat conduction oil tank, a testing pipe which is communicated with the outflow end of the heat insulation pipe testing mechanism and the heat conduction oil heating device, the heat insulation pipe testing mechanism comprises a constant temperature testing chamber which is arranged in a surrounding frame, and a heat insulation pipe to be tested is placed on a supporting frame in the constant temperature testing chamber. The utility model discloses a testing arrangement has that the heating is even, the temperature control of adjusting temperature is accurate, heat transfer effect is good, external disturbance factor advantage such as little, can further improve the accuracy nature of test result, consequently, utilizes the thermal technology performance data of this device test, can provide the foundation for the thermal technology computational method of research pipeline product and acquisition commonality theory.
Description
Technical Field
The utility model relates to a heat preservation pipe thermophysical property test technical field, in particular to long defeated heat supply network steam heat preservation pipe thermophysical property test device.
Background
When the long-distance heat transmission network is subjected to heat preservation treatment, the thermal performance of the heat preservation pipe is an important standard for evaluating the heat transmission network. For example, the thickness of the insulating material is determined according to the thermal performance of the insulating pipe. In general, the thermal performance of the insulating pipe can be obtained by two ways of theory and experiment. Theoretically, starting from the microstructure of the heat-insulating material, a heat-conducting physical model is established by researching the heat-conducting mechanism of the material on the basis of quantum mechanics and statistical mechanics, and the thermal performance of the heat-insulating pipe can be obtained through complex mathematical analysis and calculation. However, because the theoretical applicability is limited, and with the rapid increase of new materials, people have not found a theoretical equation which is accurate enough and is applicable to a wide range so far, the exploration of the thermal performance experimental test method and technology of the thermal insulation pipe is still a main source of thermal performance data of the thermal insulation pipe. Therefore, a set of suitable device for testing the thermal performance of the steam heat-insulating pipe is developed, the device has great influence on the movement working condition of the steam pipeline system, and has important significance on improving the heat efficiency of the steam pipeline system and saving resources.
SUMMERY OF THE UTILITY MODEL
The utility model provides a long defeated heat supply network steam insulating tube hot work capability test device to solve the problem among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme:
a long heat transmission network steam heat preservation pipe thermal performance testing device comprises a heat conduction oil tank 1, a heat conduction oil heating device 2, a heat conduction oil pipe 3 and a heat preservation pipe testing mechanism 4; the heat conduction oil pipe 3 is including the inlet tube that communicates heat conduction oil tank 1, conduction oil heating device 2 and 4 inflow ends of insulating tube accredited testing organization in proper order, the outlet tube that communicates 4 outflow ends of insulating tube accredited testing organization, conduction oil heating device 2 and heat conduction oil tank 1 in proper order, the test tube that communicates 4 outflow ends of insulating tube accredited testing organization and conduction oil heating device 2 to and the benefit oil pipe of intercommunication heat conduction oil tank 1 and test tube, the insulating tube accredited testing organization 4 is including setting up the constant temperature test chamber 402 in enclosing frame 408, and the insulating tube 401 that awaits measuring is placed on the support frame 409 in constant temperature test chamber 402, and the inlet tube is connected to the one end of the insulating tube 401 that awaits measuring, and the outlet tube is connected to the other end of the insulating tube 401 that awaits measuring, attached thermocouple 12 and heat flow.
Further, a first oil valve 1101 is arranged on an inflow pipe between the heat-conducting oil tank 1 and the heat-conducting oil heating device 2, a second oil valve 1102, a second oil pump 1002 and a third oil valve 1103 are sequentially arranged on the inflow pipe between the heat-conducting oil heating device 2 and the inflow end of the heat-insulating pipe testing mechanism 4, a fourth oil valve 1104 is arranged on an outflow pipe between the outflow end of the heat-insulating pipe testing mechanism 4 and the heat-conducting oil heating device 2, a fifth oil valve 1105 is arranged on an outflow pipe between the heat-conducting oil heating device 2 and the heat-conducting oil tank 1, a seventh oil valve 1107 and a first oil pump 1001 are sequentially arranged on a testing pipe between the outflow end of the heat-insulating pipe testing mechanism 4 and the heat-conducting oil heating device 2, and a sixth oil valve 1106 is arranged on the oil supplementing pipe.
Further, the heat conducting oil in the heat conducting oil tank 1 is heated by the heat conducting oil heating device 2 and the temperature is controlled by the automatic control module 6, and the temperature fluctuation range is +/-0.2 ℃. The heat conducting oil heating device 2 adopts an ADDC series product produced by Suzhou Oddy mechanical company Limited. The automatic control module 6 adopts a CPA101-220 intelligent control module produced by Fuless valve control Co., Ltd, Yangzhou city, and the data exchange module 7 adopts a TH08 series product produced by Huapu microelectronics Co., Ltd.
Further, the constant temperature testing chamber 402 is externally connected with a fan 406 positioned outside the enclosure frame 408 through an air supply pipeline 403, the constant temperature testing chamber 402 is externally connected with an air cooler 405 and an electric heater 407 positioned outside the enclosure frame 408 through an air return pipeline, and a hygrometer 14 is arranged in the constant temperature testing chamber 402.
Further, the inflow end of the thermal insulation pipe 401 to be tested is connected with the inflow pipe through a thermal insulation pipe joint 411, and the outflow end of the thermal insulation pipe 401 to be tested is connected with the outflow pipe through the thermal insulation pipe joint 411.
Furthermore, the thermocouple 12, the heat flow meter 13 and the hygrometer 14 are all connected with the data exchange module 7 through signal cables, the data exchange module 7 is connected with the industrial control computer 8 connected with the printer 9 through a signal cable 5, the industrial control computer 8 is connected with an automatic control module 6 through a signal cable 5, the automatic control module 6 is respectively connected with a first oil pump 1001, a heat-conducting oil level meter 201, a heat-conducting oil heating device 2 and a second oil pump 1002 through the signal cable 5, the data exchange module 7 is also connected with a thermocouple arranged at the top of the heat-conducting oil heating device 2, a thermocouple arranged at an inflow pipe at the inflow end of the heat-insulating pipe testing mechanism 4 and a thermocouple arranged at an outflow pipe at the outflow end of the heat-insulating pipe testing mechanism 4 through a signal cable 5, namely, the temperature of the heat transfer oil in the heat transfer oil heating device 2 and the temperature of the heat transfer oil at the inlet and the outlet of the heat preservation pipe 401 to be detected are detected.
Further, the heat preservation pipe testing mechanism 4 further comprises a power supply 412 and a control console 413, and the control console 413 is connected with the power supply 412, the fan 406, the air cooler 405 and the electric heater 407. The air supply pipeline 403 supplies air from the ceiling of the four walls of the constant temperature test chamber 402 and returns air from the bottom of the four walls of the constant temperature test chamber 402. The air cooler 405 and the electric heater 407 at the inlet of the fan 406 are used to control and regulate the temperature of the supplied air, the hygrometer 14 is used to measure the humidity of the thermostatic test chamber 402, and the thermocouple 12 and the heat flow meter 13 are used to measure the temperature and the heat flow of the thermal insulating tube 401 to be tested. The console 413 is used for controlling the on and off of the air cooler 405 and the electric heater 407, and ensures that the air temperature in the constant temperature test chamber 402 is maintained at about 25 ℃ with the control precision of +/-2 ℃. The model of the air cooler 405 is SR-LQG20, the model of the fan 406 is WEXD, the model of the electric heater 407 is TH-D-L8KW, the model of the console 413 is TKWP-C80, and the power supply 412 adopts an X-series linear power supply produced by Beijing Xinyu science and technology Limited. The thermocouple 12, the heat flow meter 13 and the hygrometer 14 are displayed on the industrial personal computer 8 through the data exchange module 7, and the industrial personal computer 8 controls the first oil pump 1001 and the second oil pump 1002 through the automatic control module 6.
Further, one end of the seventh oil valve 1107 connected to the first oil pump 1001 is connected to the test tube through a flexible metal tube 15.
Further, the inflow pipe is located at the lower sections of the heat conduction oil tank 1 and the heat conduction oil heating device 2, the outflow pipe is located at the upper sections of the heat conduction oil tank 1 and the heat conduction oil heating device 2, the oil supplementing pipe is located at the lower section of the heat conduction oil tank 1, and the testing pipe is located at the lower section of the heat conduction oil heating device 2.
Further, the heat preservation pipe 401 to be tested is a working steel pipe 4013, a heat preservation material layer 4012 and an outer steel protection pipe 4011 from inside to outside in sequence.
Further, a pressure gauge 101 is arranged on the top of the heat conducting oil tank 1.
Further, an oil discharge pipe with an eighth oil valve 1108 is arranged at the bottom of the heat-conducting oil tank 1, an oil discharge pipe with a ninth oil valve 1109 is arranged at the bottom of the heat-conducting oil heating device 2, and an oil discharge pipe with a tenth oil valve 1110 is further connected to the joint of the flexible metal pipe 15 and the heat-conducting oil pipe 3.
Further, a test pipe blow-off valve 412 is arranged on a heat preservation pipe joint 411 connected with the outflow end of the heat preservation pipe 401 to be tested, and an eleventh oil valve 1111 is arranged on a channel between the heat preservation pipe joint 411 and the test pipe blow-off valve 412.
Further, a release valve 202 is arranged at the top of the heat conduction oil heating device 2, a twelfth oil valve 1112 is arranged on a channel between the heat conduction oil heating device 2 and the release valve 202, and a heat conduction oil level meter 201 is further arranged on the heat conduction oil heating device 2.
Compared with the prior art, the utility model discloses following beneficial effect has:
the testing device of the utility model has the advantages of uniform heating, accurate temperature adjustment and control, good heat transfer effect, small external interference factors and the like, and can further improve the accuracy of the testing result; meanwhile, the device can stably maintain the test environment temperature at about 25 ℃, can provide a basis for researching a thermotechnical calculation method of a pipeline product and obtaining a universality theory, and can be widely applied to production enterprises, related quality detection departments, units and the like of heat-resistant and heat-insulating materials.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of a testing mechanism for a middle thermal insulation pipe according to the present invention;
FIG. 3 is a schematic structural view of the thermal insulation pipe to be tested according to the present invention;
wherein: 1-heat conducting oil tank, 101-pressure gauge, 2-heat conducting oil heating device, 201-heat conducting oil level gauge, 202-air release valve, 3-heat conducting oil pipe, 4-heat insulating pipe testing mechanism, 401-heat insulating pipe to be tested, 4011-steel outer protecting pipe, 4012-heat insulating material layer, 4013-working steel pipe, 402-constant temperature testing chamber, 403-air supply pipeline, 404-air return pipeline, 405-air cooler, 406-blower, 407-electric heater, 408-enclosure frame, 409-support frame, 410-test pipe air release valve, 411-heat insulating pipe joint, 412-power supply, 413-control console, 5-signal cable, 6-automatic control module, 7-data exchange module, 8-industrial control computer, 9-printer, 1001-first oil pump, 1002-second oil pump, 1101-first oil valve, 1102-second oil valve, 1103-third oil valve, 1104-fourth oil valve, 1105-fifth oil valve, 1106-sixth oil valve, 1107-seventh oil valve, 1108-eighth oil valve, 1109-ninth oil valve, 1110-tenth oil valve, 1111-eleventh oil valve, 1112-twelfth oil valve, 12-thermocouple, 13-heat flow meter, 14-hygrometer, 15-flexible metal tube.
Detailed Description
The present invention will be further described with reference to the following examples.
Each component adopted in the utility model is purchased from the market, and for the prior art, specifically, the heat conducting oil heating device 2 adopts ADDC series products produced by suzhou alder mechanical limited. The automatic control module 6 adopts a CPA101-220 intelligent control module produced by Fuless valve control Co., Ltd. The data exchange module 7 adopts TH08 series products manufactured by huapu microelectronics ltd. The model of the air cooler 405 is SR-LQG20, the model of the fan 406 is WEXD, the model of the electric heater 407 is TH-D-L8KW, the model of the console 413 is TKWP-C80, and the power supply 412 adopts an X-series linear power supply produced by Beijing Xinyu science and technology Limited.
Example 1
As shown in fig. 1-3, a thermal performance testing device for a long heat transfer network steam heat-preservation pipe comprises a heat-conducting oil tank 1, a heat-conducting oil heating device 2, a heat-conducting oil pipe 3 and a heat-preservation pipe testing mechanism 4; the heat conducting oil pipe 3 comprises an inflow pipe which is sequentially communicated with the inflow end of the heat conducting oil tank 1, the heat conducting oil heating device 2 and the heat insulating pipe testing mechanism 4, an outflow pipe which is sequentially communicated with the outflow end of the heat insulating pipe testing mechanism 4, the heat conducting oil heating device 2 and the heat conducting oil tank 1, and a testing pipe which is communicated with the outflow end of the heat insulating pipe testing mechanism 4 and the heat conducting oil heating device 2, and an oil supplementing pipe for communicating the heat-conducting oil tank 1 and the test pipe, wherein the heat-insulating pipe test mechanism 4 comprises a constant-temperature test chamber 402 arranged in a surrounding frame 408, the heat-insulating pipe 401 to be tested is placed on a support frame 409 in the constant-temperature test chamber 402, one end of the heat-insulating pipe 401 to be tested is connected with an inflow pipe, the other end of the heat-insulating pipe 401 to be tested is connected with an outflow pipe, attached thermocouple 12 and heat flow meter 13 on the insulating tube 401 that awaits measuring, insulating tube 401 that awaits measuring is working steel pipe 4013, insulating material layer 4012 and steel outer protective casing 4011 from inside to outside in proper order.
Be provided with first oil valve 1101 on the inlet tube between heat conduction oil tank 1 and the conduction oil heating device 2, second oil valve 1102, second oil pump 1002 and third oil valve 1103 have set gradually on the inlet tube between the conduction oil heating device 2 and the 4 inflow ends of insulating tube accredited testing organization, be provided with fourth oil valve 1104 on the outlet tube between 4 outflow ends of insulating tube accredited testing organization and the conduction oil heating device 2, be provided with fifth oil valve 1105 on the outlet tube between conduction oil heating device 2 and the heat conduction oil tank 1, seventh oil valve 1107 and first oil pump 1001 have set gradually on the test tube between 4 outflow ends of insulating tube accredited testing organization and the conduction oil heating device 2, be provided with sixth oil valve 1106 on the benefit oil pipe.
The heat conduction oil in the heat conduction oil tank 1 is heated by the heat conduction oil heating device 2 and the temperature is controlled by the automatic control module 6, and the temperature fluctuation range is +/-0.2 ℃. The heat conducting oil heating device 2 adopts an ADDC series product produced by Suzhou Oddy mechanical company Limited. The automatic control module 6 adopts a CPA101-220 intelligent control module produced by Fuless valve control Co., Ltd, Yangzhou city, and the data exchange module 7 adopts a TH08 series product produced by Huapu microelectronics Co., Ltd.
The constant temperature test chamber 402 is externally connected with a fan 406 positioned outside the enclosure frame 408 through an air supply pipeline 403, the constant temperature test chamber 402 is externally connected with an air cooler 405 and an electric heater 407 positioned outside the enclosure frame 408 through an air return pipeline, and a hygrometer 14 is arranged in the constant temperature test chamber 402.
The inflow end of the thermal insulation pipe 401 to be tested is connected with the inflow pipe through a thermal insulation pipe joint 411, and the outflow end of the thermal insulation pipe 401 to be tested is connected with the outflow pipe through the thermal insulation pipe joint 411.
The thermocouple 12, the heat flow meter 13 and the hygrometer 14 are all connected with a data exchange module 7 through signal cables, the data exchange module 7 is connected with an industrial control computer 8 connected with a printer 9 through a signal cable 5, the industrial control computer 8 is connected with an automatic control module 6 through a signal cable 5, the automatic control module 6 is respectively connected with a first oil pump 1001, a heat-conducting oil level meter 201, a heat-conducting oil heating device 2 and a second oil pump 1002 through a signal cable 5, and the data exchange module 7 is further connected with a thermocouple arranged at the top of the heat-conducting oil heating device 2, a thermocouple arranged at an inflow pipe of an inflow end of the heat-insulating pipe testing mechanism 4 and a thermocouple arranged at an outflow pipe of the outflow end of the heat-insulating pipe testing mechanism 4 through the signal cable 5, namely, the temperature of the heat-conducting oil in the heat-conducting oil heating device 2 is detected.
The heat preservation pipe testing mechanism 4 further comprises a power supply 412 and a control console 413, wherein the control console 413 is connected with the power supply 412, the fan 406, the air cooler 405 and the electric heater 407. The air supply pipeline 403 supplies air from the ceiling of the four walls of the constant temperature test chamber 402 and returns air from the bottom of the four walls of the constant temperature test chamber 402. The air cooler 405 and the electric heater 407 at the inlet of the fan 406 are used to control and regulate the temperature of the supplied air, the hygrometer 14 is used to measure the humidity of the thermostatic test chamber 402, and the thermocouple 12 and the heat flow meter 13 are used to measure the temperature and the heat flow of the thermal insulating tube 401 to be tested. The console 413 is used for controlling the on and off of the air cooler 405 and the electric heater 407, and the air temperature in the constant temperature test chamber 402 is kept at about 25 ℃, and the control precision is +/-2 ℃. The model of the air cooler 405 is SR-LQG20, the model of the fan 406 is WEXD, the model of the electric heater 407 is TH-D-L8KW, the model of the console 413 is TKWP-C80, and the power supply 412 adopts an X-series linear power supply produced by Beijing Xinyu science and technology Limited. The thermocouple 12, the heat flow meter 13 and the hygrometer 14 are displayed on the industrial personal computer 8 through the data exchange module 7, and the industrial personal computer 8 controls the first oil pump 1001 and the second oil pump 1002 through the automatic control module 6.
And one end of the seventh oil valve 1107 connected with the first oil pump 1001 is connected into a test tube through a flexible metal tube 15.
The inflow pipe is positioned at the lower sections of the heat-conducting oil tank 1 and the heat-conducting oil heating device 2, the outflow pipe is positioned at the upper sections of the heat-conducting oil tank 1 and the heat-conducting oil heating device 2, the oil supplementing pipe is positioned at the lower section of the heat-conducting oil tank 1, and the testing pipe is positioned at the lower section of the heat-conducting oil heating device 2.
The top of the heat conducting oil tank 1 is provided with a pressure gauge 101.
The bottom of the heat-conducting oil tank 1 is provided with an oil discharge pipe with an eighth oil valve 1108, the bottom of the heat-conducting oil heating device 2 is provided with an oil discharge pipe with a ninth oil valve 1109, and the joint of the flexible metal pipe 15 and the heat-conducting oil pipe 3 is also connected with an oil discharge pipe with a tenth oil valve 1110.
A test pipe air release valve 412 is arranged on the heat preservation pipe joint 411 connected with the outflow end of the heat preservation pipe 401 to be tested, and an eleventh oil valve 1111 is arranged on a channel between the heat preservation pipe joint 411 and the test pipe air release valve 412.
The top of the heat conduction oil heating device 2 is provided with a vent valve 202, a twelfth oil valve 1112 is arranged on a channel between the heat conduction oil heating device 2 and the vent valve 202, and the heat conduction oil heating device 2 is further provided with a heat conduction oil level meter 201.
Example 2
The utility model provides a long defeated heat supply network steam insulating tube heat behavior testing arrangement, includes following three kinds of mode, mode one: opening a first oil valve 1101, a second oil valve 1102, a third oil valve 1103, a fourth oil valve 1104 and a fifth oil valve 1105, closing the rest oil valves, enabling the heat conduction oil carried in the heat conduction oil tank 1 to flow into a heat conduction oil heating device 2 from the heat conduction oil tank 1 under the power of a second oil pump 1002, enabling the inflow end of a self-heat-preservation pipe testing mechanism 4 to flow into a heat-preservation pipe testing mechanism 4, enabling the outflow end of the self-heat-preservation pipe testing mechanism 4 to flow back to the heat conduction oil heating device 2 after flowing out, and finally flowing back to the heat conduction oil tank 1 to form a heat-preservation pipe heat-conduction oil filling loop to be tested, wherein the heat conduction oil filling loop of the heat-preservation pipe to;
and a second working mode: opening a second oil valve 1102, a third oil valve 1103 and a seventh oil valve 1107, closing other oil valves, and under the power provided by a first oil pump 1001 and a second oil pump 1002, forming a thermal performance test loop of the heat-conducting oil tank 1 between the heat-conducting oil heating device 2 and the heat-insulating pipe 401 to be tested, and carrying out a thermal performance test on the heat-insulating pipe to be tested by the thermal performance test loop of the heat-conducting oil tank 1;
and a third working mode: in the second working mode, the sixth oil valve 1106 is opened, and the heat conduction oil tank 1 supplies heat conduction oil to the thermal performance test loop of the thermal insulation pipe to be tested under the power provided by the first oil pump 1001 and the second oil pump 1002.
Example 3
A long heat transmission network steam heat preservation pipe thermal performance test method comprises the following steps: horizontally placing a heat-insulating pipe 401 to be tested on a supporting frame 419 in a constant-temperature test chamber 402, adjusting the temperature in the constant-temperature test chamber 402 to be 25 ℃, opening a first oil valve 1101, a second oil valve 1102, a third oil valve 1103, a fourth oil valve 1104 and a fifth oil valve 1105, under the power of a second oil pump 1002, heating heat-conducting oil in a heat-conducting oil tank 1 in a heat-conducting oil heating device 2, filling the heat-conducting oil into the heat-insulating pipe 401 to be tested, then closing the fourth oil valve 1104 and the fifth oil valve 1105, opening a seventh oil valve 1107, under the power of the first oil pump 1001 and the second oil pump 1002, circulating the heat-conducting oil between the heat-conducting oil heating device 2 and the heat-insulating pipe 401 to be tested, selecting two test sections perpendicular to the axial center of the heat-insulating pipe 401 to be tested, and respectively arranging 3 temperature measuring points on a working steel pipe 4013, a heat-insulating material layer 4012 and an outer steel pipe 4011 on each test section, 3 heat flow measuring points are arranged on the outer surface of the outer steel protective pipe 4011; and after the heat conducting oil is stably circulated for 2-3 days, testing each temperature measuring point and each heat flow measuring point for 10 times and then averaging. The thermocouple 15 is arranged on the thermal insulation pipe 401 to be measured, and the measurement precision is as follows: the temperature of the temperature measuring point is measured at +/-0.5 ℃, and a heat flow meter 16 is arranged on the heat preservation pipe 401 to be measured to measure the heat flow density of the heat flow measuring point.
Specifically, the heat preservation pipe 401 to be tested is horizontally placed, and is placed in the constant temperature test chamber 402, the length of the heat preservation pipe 401 is 3 meters, the height of the heat preservation pipe is 1 meter, in addition, the contact part of the support frame 419 and the heat preservation pipe 401 to be tested has good heat preservation performance, the air cooler 405 and the electric heater 407 which are arranged at the inlet of the fan 406 are adopted in the constant temperature test chamber 402 to control and adjust the air supply temperature, the air supply pipeline supplies air to the ceiling of the four walls of the constant temperature test chamber 402, air returns from the bottom of the four walls of the constant temperature test chamber 402, the air temperature in the constant temperature test chamber 402 is maintained at about 25 ℃ by a method of changing the air supply temperature after the air supply: 2 ℃ C. In order to realize a stable test environment, heat conduction oil is used as a heat medium in the heat preservation pipe 401 to be tested, the boiling point of the heat conduction oil is above 350 ℃, and the heat preservation pipe is suitable for simulating a high-temperature heat medium in the heat preservation pipe 401 to be tested. The heat conducting oil is heated by the heat conducting oil heating device 2 and is stabilized at 130 ℃, 180 ℃, 200 ℃, 250 ℃ or 300 ℃ by the automatic control module 6, and the temperature fluctuation range is as follows: . + -. 0.2 ℃.
2 test sections are selected on the thermal insulation pipe 401 to be tested and are respectively arranged on the axial center section perpendicular to the thermal insulation pipe 401 to be tested and the parallel section 500mm away from the axial center section. On each test section, 3 temperature measuring points are arranged on the outer surface of the outer steel protecting pipe 4011, the outer surface of the heat insulating material layer 4012 and the outer surface of the working steel pipe 4013; 3 heat flow measuring points are arranged on the outer surface of the outer steel protecting pipe 4011. The measuring points are arranged at the top and the bottom of the heat preservation pipe 401 to be measured and at an included angle of 2 pi/3 with the vertical direction, and the total number of the measuring points is 18, and 6 heat flow measuring points are arranged. And after each working condition is stable for 2-3 days, testing the temperature measuring points and the heat flow measuring points for 10 times and then averaging. The thermocouple 15 is arranged on the thermal insulation pipe 401 to be measured, and the measurement precision is as follows: the temperature of the measurement temperature measurement points is + -0.5 deg.C, and a heat flow meter 16 is arranged to measure the heat flow density at the heat flow measurement points.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a long defeated heat supply network steam insulating tube heat efficiency capability test device which characterized in that: the device comprises a heat conduction oil tank (1), a heat conduction oil heating device (2), a heat conduction oil pipe (3) and a heat preservation pipe testing mechanism (4); the heat conducting oil pipe (3) comprises an inflow pipe, an outflow pipe and a test pipe, wherein the inflow pipe is sequentially communicated with the inflow end of the heat conducting oil tank (1), the heat conducting oil heating device (2) and the heat insulating pipe testing mechanism (4), the outflow end of the heat insulating pipe testing mechanism (4), the heat conducting oil heating device (2) and the heat conducting oil tank (1), the test pipe is communicated with the outflow end of the heat insulating pipe testing mechanism (4) and the heat conducting oil heating device (2), and an oil supplementing pipe for communicating the heat-conducting oil tank (1) and the test pipe, wherein the heat-insulating pipe test mechanism (4) comprises a constant-temperature test chamber (402) arranged in a surrounding frame (408), the heat-insulating pipe (401) to be tested is placed on a support frame (409) in the constant-temperature test chamber (402), one end of the heat-insulating pipe (401) to be tested is connected with an inflow pipe, the other end of the heat-insulating pipe (401) to be tested is connected with an outflow pipe, and a thermocouple (12) and a heat flow meter (13) are attached to the heat preservation pipe (401) to be tested.
2. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 1, characterized in that: be provided with first oil valve (1101) on the inflow pipe between heat conduction oil tank (1) and heat conduction oil heating device (2), second oil valve (1102), second oil pump (1002) and third oil valve (1103) have set gradually on the inflow pipe between heat conduction oil heating device (2) and heat preservation pipe accredited testing organization (4) inflow end, be provided with fourth oil valve (1104) on the outflow pipe between heat preservation pipe accredited testing organization (4) outflow end and heat conduction oil heating device (2), be provided with fifth oil valve (1105) on the outflow pipe between heat conduction oil heating device (2) and heat conduction oil tank (1), seventh oil valve (1107) and first oil pump (1001) have set gradually on the test tube between heat preservation pipe accredited testing organization (4) outflow end and heat conduction oil heating device (2), be provided with sixth oil valve (1106) on the benefit oil pipe.
3. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 1, characterized in that: the constant temperature testing chamber (402) is externally connected with a fan (406) which is positioned outside the enclosure frame (408) through an air supply pipeline (403), the constant temperature testing chamber (402) is externally connected with an air cooler (405) and an electric heater (407) which are positioned outside the enclosure frame (408) through an air return pipeline, and a hygrometer (14) is arranged in the constant temperature testing chamber (402).
4. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 1, characterized in that: the inflow end of the heat preservation pipe (401) to be tested is connected with the inflow pipe through a heat preservation pipe joint (411), and the outflow end of the heat preservation pipe (401) to be tested is connected with the outflow pipe through the heat preservation pipe joint (411).
5. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 3, characterized in that: the thermocouple (12), the heat flow meter (13) and the hygrometer (14) are all connected with the data exchange module (7) through signal cables (5), the data exchange module (7) is connected with an industrial control computer (8) of a printer (9) through the signal cables (5), the industrial control computer (8) is connected with the automatic control module (6) through a signal cable (5), the automatic control module (6) is respectively connected with the first oil pump (1001), the heat-conducting oil level meter (201), the heat-conducting oil heating device (2) and the second oil pump (1002) through signal cables (5), the data exchange module (7) is also connected with a thermocouple arranged at the top of the heat-conducting oil heating device (2), a thermocouple arranged at an inflow pipe at the inflow end of the heat-insulating pipe testing mechanism (4) and a thermocouple arranged at an outflow pipe at the outflow end of the heat-insulating pipe testing mechanism (4) through a signal cable (5).
6. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 2, characterized in that: and one end of the seventh oil valve (1107) connected with the first oil pump (1001) is connected into the test tube through a flexible metal tube (15).
7. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 1, characterized in that: the top of the heat-conducting oil tank (1) is provided with a pressure gauge (101).
8. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 6, characterized in that: the oil-gas heat-conducting oil tank is characterized in that an oil discharge pipe with an eighth oil valve (1108) is arranged at the bottom of the heat-conducting oil tank (1), an oil discharge pipe with a ninth oil valve (1109) is arranged at the bottom of the heat-conducting oil heating device (2), and an oil discharge pipe with a tenth oil valve (1110) is further connected to the joint of the flexible metal pipe (15) and the heat-conducting oil pipe (3).
9. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 1, characterized in that: a test pipe blow-off valve (412) is arranged on a heat-insulating pipe joint (411) connected with the outflow end of the heat-insulating pipe (401) to be tested, and an eleventh oil valve (1111) is arranged on a channel between the heat-insulating pipe joint (411) and the test pipe blow-off valve (412); the top of the heat conduction oil heating device (2) is provided with a vent valve (202), a twelfth oil valve (1112) is arranged on a channel between the heat conduction oil heating device (2) and the vent valve (202), and the heat conduction oil heating device (2) is further provided with a heat conduction oil level meter (201).
10. The device for testing the thermal performance of the steam heat-preservation pipe of the long heat transmission network according to claim 5, is characterized in that: the model of the automatic control module (6) is CPA101-220, and the model of the data exchange module (7) is TH 08; the model of the air cooler (405) is SR-LQG20, the model of the fan (406) is WEXD, and the model of the electric heater (407) is TH-D-L8 KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020767807.9U CN212083291U (en) | 2020-05-11 | 2020-05-11 | Long defeated heat supply network steam insulating tube thermal behavior testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020767807.9U CN212083291U (en) | 2020-05-11 | 2020-05-11 | Long defeated heat supply network steam insulating tube thermal behavior testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212083291U true CN212083291U (en) | 2020-12-04 |
Family
ID=73567073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020767807.9U Active CN212083291U (en) | 2020-05-11 | 2020-05-11 | Long defeated heat supply network steam insulating tube thermal behavior testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212083291U (en) |
-
2020
- 2020-05-11 CN CN202020767807.9U patent/CN212083291U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Guo et al. | Experimental and numerical study on the transient heat-transfer characteristics of circular air-jet impingement on a flat plate | |
| CN102072916B (en) | Method and device for measuring total hemispherical emissivity of non-metallic material | |
| Atayılmaz | Experimental and numerical study of natural convection heat transfer from horizontal concentric cylinders | |
| CN106841287A (en) | A kind of High Accuracy Flat method measuring thermal conductivity device based on saturated vapor heating | |
| Fernández-Torrijos et al. | Inverse heat problem of determining unknown surface heat flux in a molten salt loop | |
| Chen et al. | Experimental investigation on the suppression factor in subcooled boiling flow | |
| CN116337929A (en) | Experimental device and method for testing heat transfer limit of non-uniform-power high-temperature heat pipe | |
| CN212083291U (en) | Long defeated heat supply network steam insulating tube thermal behavior testing arrangement | |
| Fiorina et al. | Thermal-hydraulics of internally heated molten salts and application to the Molten Salt Fast Reactor | |
| Zaragoza et al. | Development of a device for the measurement of thermal and fluid flow properties of heat exchanger materials | |
| CN206756728U (en) | A kind of good conductor thermal conductivity factor experiment instrument | |
| Zandt et al. | Capabilities for dielectric-constant gas thermometry in a special large-volume liquid-bath thermostat | |
| CN111426723A (en) | Long heat transmission network steam heat-preservation pipe thermal performance testing device and testing method thereof | |
| Bhowmik et al. | Analyses of natural convection heat transfer from a heated cylinder mounted in vertical duct | |
| Sankar | Numerical study of double diffusive convection in partially heated vertical open ended cylindrical annulus | |
| Hong et al. | A self-scaling sequential quasi-Newton method for estimating the heat transfer coefficient distribution in the air jet impingement | |
| CN113670809A (en) | Corrosion electrochemical measuring device and method for coupling heat transfer and flow field | |
| Arpino et al. | Environmental Effect on Temperature Measurement in Natural Gas Network Balance | |
| Devera et al. | The effect of mixed convection on the thermal field of horizontal channel flow | |
| Ovsyannik et al. | Heat exchange at the boiling of ozone-safe refrigerants and their oil-freon mixtures | |
| CN115372409B (en) | Device and method for simultaneously measuring solid-liquid phase temperature thermal conductivity of phase change material | |
| CN113640345B (en) | Experimental device for simply measure liquid coefficient of heat conductivity | |
| Kumar et al. | Second law analysis of a solar air heater having 60 inclined discrete rib roughness on absorber plate | |
| Chauvet et al. | Heat-transfer correlations for an immersed finned heat-exchanger coil transferring heat from a hot-water store | |
| Maskalunas et al. | High-temperature thermal properties of particles in consideration for thermal storage in concentrated solar power systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |