CN112729721A - Sealing performance test system for butterfly valve under high-temperature condition - Google Patents
Sealing performance test system for butterfly valve under high-temperature condition Download PDFInfo
- Publication number
- CN112729721A CN112729721A CN202011567344.2A CN202011567344A CN112729721A CN 112729721 A CN112729721 A CN 112729721A CN 202011567344 A CN202011567344 A CN 202011567344A CN 112729721 A CN112729721 A CN 112729721A
- Authority
- CN
- China
- Prior art keywords
- heating
- pipe
- butterfly valve
- testing
- test
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000011056 performance test Methods 0.000 title claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 139
- 238000010438 heat treatment Methods 0.000 claims abstract description 92
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a sealing performance test system of a butterfly valve under a high-temperature condition, which comprises a heating unit, a flow control unit and a test unit, wherein the heating unit is used for heating the butterfly valve; the heating unit heats the test medium to a set temperature; the flow control unit is connected between the heating unit and the testing unit and used for adjusting the flow of the testing medium; the test unit comprises a first test tube, a second test tube and a flowmeter, a butterfly valve to be tested is installed between the first test tube and the second test tube, the first test tube is connected with the flow control unit through the first butterfly valve, a one-way valve is installed in the first test tube, the second test tube is connected with the outlet pipe through the second butterfly valve, and the flowmeter is arranged on the second test tube. The invention utilizes the flowmeter to accurately test the leakage amount of the test medium, so that the test result is accurate and reliable; meanwhile, the flow control unit can adjust the flow of the test medium, so that the test system can test the leakage amount of the butterfly valve corresponding to different flows and flow rates.
Description
Technical Field
The invention relates to the technical field of valve testing, in particular to a system for testing the sealing performance of a butterfly valve under a high-temperature condition.
Background
Valves are mechanical devices that control the flow, direction, pressure, temperature, etc. of a flowing fluid medium, and are essential components in piping systems. Valve leakage can lead to production unable normal operating, and valve seal inspection also is called valve leakage and detects, must carry out valve leakage and detect when the valve leaves the factory.
The sealing performance of the sealing element in the butterfly valve is high in temperature, so that the butterfly valve used in high-temperature environments such as a high-temperature flue gas pipeline and the like is subjected to high-temperature sealing performance test before leaving a factory. Through retrieval, equipment special for testing the leakage amount of the butterfly valve under the high-temperature condition is not found, so that the equipment capable of testing the sealing performance of the butterfly valve under the high-temperature condition needs to be provided urgently.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the system equipment for testing the sealing performance of the butterfly valve under the high-temperature condition is reliable in test result.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the sealing performance test system for the butterfly valve under the high-temperature condition comprises a heating unit, a flow control unit and a test unit; the heating unit heats the test medium to a set temperature; the flow control unit is connected between the heating unit and the testing unit and used for adjusting the flow of the testing medium; the testing unit comprises a first testing pipe, a second testing pipe and a flowmeter, a butterfly valve to be tested is installed between the first testing pipe and the second testing pipe, the first testing pipe is connected with the flow control unit through the first butterfly valve, a one-way valve is installed in the first testing pipe, the second testing pipe is connected with an air outlet pipe, the second testing pipe is connected with the air outlet pipe through the second butterfly valve, and the flowmeter is arranged on the second testing pipe; and the test air inlet pipes connected with an external normal-temperature air source are arranged on the test pipe I and the test pipe II.
Further, the flow control unit comprises a first connecting pipeline, a middle pipeline and a second connecting pipeline, the first connecting pipeline is connected with the heating unit, the second connecting pipeline is connected with the testing unit, the first connecting pipeline is connected with the middle pipeline through a switch valve, and the middle pipeline is connected with the second connecting pipeline through a butterfly valve.
Preferably, the middle pipeline consists of a plurality of pipelines, and adjacent pipelines are connected through a butterfly valve IV.
Furthermore, a thermocouple is arranged in the flow test unit, and a thermocouple is also arranged in the test unit.
Furthermore, a first test air inlet pipe connected with an external normal-temperature air source is arranged in the flow control unit.
Further, the heating unit comprises a heating cavity, a heating element, an air inlet pipe, a fan and an air supply pipe, the heating element is arranged in the heating cavity, an external test medium is blown into the heating cavity by the fan, and the air supply pipe is connected between the heating cavity and the flow control unit.
Preferably, the heating element comprises a seamless heating pipe and a heating wire, the heating wire is installed in the seamless heating pipe, and magnesium oxide powder is filled between the heating wire and the seamless heating pipe.
Preferably, the heating element is a stainless steel 310S electric heating tube.
Preferably, a plurality of guide plates are arranged in the heating cavity; the guide plate is along the length direction setting of heating chamber, two adjacent guide plates, one of them is fixed in the top of heating chamber, the bottom of this guide plate with the bottom of heating chamber forms the gas pocket, another guide plate is fixed in the bottom of heating chamber, the top of this guide plate with the top of heating chamber forms the gas pocket.
Preferably, the heating cavity is externally coated with heat-insulating cotton.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention utilizes the flowmeter to accurately test the leakage amount of the test medium, so that the test result is accurate and reliable;
2. the flow control unit can adjust the flow of the test medium, so that the test system can test the leakage rate of the butterfly valve corresponding to different flows and flow rates;
3. the test air inlet pipe is used for introducing normal-temperature gas into the test pipe, so that the leakage rate of the butterfly valve at normal temperature can be tested;
4. after the detection is finished, the test air inlet pipe introduces normal-temperature gas into the test pipe, and the test unit can be cooled.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic diagram of a test system;
fig. 2 is a sectional view of the heating unit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Examples
Referring to fig. 1, the testing system includes a heating unit 10, a flow control unit 30, and a testing unit 40. The heating unit 10 heats the test medium to a set temperature. The flow control unit 30 is connected between the heating unit 10 and the testing unit 40 and used for adjusting the flow of the testing medium; the testing unit 40 comprises a first testing pipe 41, a second testing pipe 42 and a flow meter 43, the butterfly valve 20 to be tested is installed between the first testing pipe 41 and the second testing pipe 42, the first testing pipe 41 is connected with the flow control unit 30 through a first butterfly valve 44, a one-way valve 45 is installed in the first testing pipe 41, the second testing pipe 42 is connected with the air outlet pipe 50 through a second butterfly valve 46, and the flow meter 43 is arranged on the second testing pipe 42. The heated test medium enters the test unit 40 after the flow and the flow rate are adjusted by the flow control unit 30, the heating medium passing through the butterfly valve 20 to be tested is detected by the flow meter 43, and the leakage rate of the butterfly valve 20 to be tested at the high temperature can be obtained by reading the reading of the flow meter 43 and a calculation formula. Thermocouples for detecting the temperature of the pipeline are arranged in the heating unit 10, the flow testing unit 40 and the testing unit 40, so that the detection result is prevented from being influenced by overhigh or overlow temperature.
The test system detects the leakage amount of the butterfly valve under the high-temperature condition, and generally needs to measure the leakage amount of the butterfly valve at normal temperature for comparison test results. In the embodiment, the test air inlet pipe 60 connected with an external normal-temperature air source is arranged on the first test pipe 41 and the second test pipe 42, and before the high-temperature test, normal-temperature test medium is injected into the first test pipe 41, so that the leakage amount of the butterfly valve is calculated according to the reading change of the flowmeter 43; and (3) injecting a normal-temperature test medium into the second test pipe 42, and calculating the leakage amount of the butterfly valve according to the reading change of the flowmeter 43.
In this embodiment, the flow control unit 30 includes a first connection pipe 31, a second connection pipe 32 and a second connection pipe 33, the first connection pipe 31 is connected to the heating unit 10, the second connection pipe 33 is connected to the testing unit 40, the first connection pipe 31 is connected to the second connection pipe 32 through a switch valve 36, and the second connection pipe 32 is connected to the second connection pipe 33 through a butterfly valve 34. The middle pipeline 32 is composed of a plurality of pipelines, and adjacent pipelines are connected through a butterfly valve IV. The flow rate and the flow quantity of the test medium are adjusted by adjusting the opening and closing of the switch valve 36 and the opening and closing quantities of the butterfly valve three 34 and the butterfly valve four.
The flow control unit 30 is internally provided with a first test air inlet pipe 70 connected with an external normal-temperature air source, after detection is finished, normal-temperature gas is introduced into the flow control unit 30 through the first test air inlet pipe 70, and normal-temperature gas is introduced into the test unit 40 through the test air inlet pipe 60, so that the two units can be cooled.
In this embodiment, the heating unit 10 is a heating device of the whole testing system, converts electric energy into heat energy, and includes a heating cavity 11, a heating element 13, an air inlet pipe 14, a fan and an air supply pipe 15, the heating cavity 11 is coated with heat insulation cotton 12, the heating element 13 is disposed in the heating cavity 11, the fan blows an external testing medium into the heating cavity 11, and the air supply pipe 15 is connected between the heating cavity 11 and the flow control unit 30. The heating element 13 is an electric heating tube made of stainless steel 310S. Heating element 13 includes seamless heating pipe and heating wire, and the heating wire is installed in seamless heating pipe, and it has the good magnesium oxide powder of heat conductivity and insulating nature to fill between heating wire and the seamless heating pipe, and when the electric current passed through high temperature resistance wire, the heat of production was passed through crystallization magnesium oxide powder and is to heating pipe surface diffusion, and the retransmission goes in being heated air, has reached the purpose of heating. The two ends of the seamless heating pipe are sealed by silica gel ceramics, the structure is advanced, and the heating effect is excellent.
Preferably, a number of baffles 16 are provided within the heating chamber 11. The air guide plate 16 is arranged along the length direction of the heating cavity 11, one of the two adjacent air guide plates 16 is fixed at the top of the heating cavity 11, the bottom of the air guide plate 16 and the bottom of the heating cavity 11 form an air passing hole, the other air guide plate 16 is fixed at the bottom of the heating cavity 11, and the top of the air guide plate 16 and the top of the heating cavity 11 form an air passing hole. The guide plate 16 guides the residence time of the test medium in the heating chamber 11, so that the test medium is sufficiently and uniformly heated, and the heat exchange rate is improved.
In conclusion, the beneficial effects of the invention are as follows:
1. the invention utilizes the flowmeter to accurately test the leakage amount of the test medium, so that the test result is accurate and reliable;
2. the flow control unit can adjust the flow of the test medium, so that the test system can test the leakage rate of the butterfly valve corresponding to different flows and flow rates;
3. the test air inlet pipe is used for introducing normal-temperature gas into the test pipe, so that the leakage rate of the butterfly valve at normal temperature can be tested;
4. after the detection is finished, the test air inlet pipe introduces normal-temperature gas into the test pipe, and the test unit can be cooled.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The sealing performance test system for the butterfly valve under the high-temperature condition is characterized by comprising a heating unit (10), a flow control unit (30) and a test unit (40); the heating unit (10) heats the test medium to a set temperature; the flow control unit (30) is connected between the heating unit (10) and the testing unit (40) and is used for adjusting the flow of the testing medium; the testing unit (40) comprises a first testing pipe (41), a second testing pipe (42) and a flow meter (43), a butterfly valve (20) to be tested is installed between the first testing pipe (41) and the second testing pipe (42), the first testing pipe (41) is connected with the flow control unit (30) through a first butterfly valve (44), a one-way valve (45) is installed in the first testing pipe (41), the second testing pipe (42) is connected with an air outlet pipe (50), the second testing pipe (42) is connected with the air outlet pipe (50) through a second butterfly valve (46), and the flow meter (43) is arranged on the second testing pipe (42); and the test air inlet pipes (60) connected with an external normal-temperature air source are arranged on the test pipe I (41) and the test pipe II (42).
2. The butterfly valve sealing performance testing system under high-temperature conditions of claim 1, wherein the flow control unit (30) comprises a first connecting pipe (31), a second connecting pipe (32) and a second connecting pipe (33), the first connecting pipe (31) is connected with the heating unit (10), the second connecting pipe (33) is connected with the testing unit (40), the first connecting pipe (31) is connected with the second connecting pipe (32) through an on-off valve (36), and the second connecting pipe (32) is connected with the second connecting pipe (33) through a third butterfly valve (34).
3. The butterfly valve sealing performance testing system under high-temperature conditions of claim 2, wherein the intermediate pipeline (32) is composed of a plurality of pipelines, and adjacent pipelines are connected through a butterfly valve.
4. The butterfly valve sealing performance testing system under high temperature conditions of claim 1, wherein a thermocouple is arranged in the flow testing unit (40), and a thermocouple is also arranged in the testing unit (40).
5. The butterfly valve sealing performance testing system under high-temperature conditions of claim 1, wherein a first testing air inlet pipe (70) connected with an external normal-temperature air source is arranged in the flow control unit (30).
6. The butterfly valve sealing performance testing system under high temperature conditions of claim 1, wherein the heating unit (10) comprises a heating chamber (11), a heating element (13), an air inlet pipe (14), a fan and an air delivery pipe (15), the heating element (13) is arranged in the heating chamber (11), the fan blows an external testing medium into the heating chamber (11), and the air delivery pipe (15) is connected between the heating chamber (11) and the flow control unit (30).
7. The butterfly valve sealing performance testing system under high temperature conditions of claim 6, wherein the heating element (13) comprises a seamless heating tube and a heating wire, the heating wire is installed in the seamless heating tube, and magnesium oxide powder is filled between the heating wire and the seamless heating tube.
8. The butterfly valve sealing performance testing system under high-temperature conditions of claim 7, characterized in that the heating element (13) is a stainless steel 310S electric heating tube.
9. The butterfly valve sealing performance testing system under high temperature conditions of claim 6, wherein a plurality of guide plates (16) are arranged in the heating cavity (11); the air guide plate (16) is arranged along the length direction of the heating cavity (11), one of the two adjacent air guide plates (16) is fixed to the top of the heating cavity (11), the bottom of the air guide plate (16) and the bottom of the heating cavity (11) form an air passing hole, the other air guide plate (16) is fixed to the bottom of the heating cavity (11), and the top of the air guide plate (16) and the top of the heating cavity (11) form an air passing hole.
10. The butterfly valve sealing performance testing system under high temperature conditions of claim 6, wherein the heating cavity (11) is coated with heat insulation cotton (12) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011567344.2A CN112729721A (en) | 2020-12-25 | 2020-12-25 | Sealing performance test system for butterfly valve under high-temperature condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011567344.2A CN112729721A (en) | 2020-12-25 | 2020-12-25 | Sealing performance test system for butterfly valve under high-temperature condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112729721A true CN112729721A (en) | 2021-04-30 |
Family
ID=75616557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011567344.2A Pending CN112729721A (en) | 2020-12-25 | 2020-12-25 | Sealing performance test system for butterfly valve under high-temperature condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112729721A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100092320A (en) * | 2009-02-12 | 2010-08-20 | 주식회사 에스앤드더블유아이엔디 | A butterfly valve testing device |
| TW201245660A (en) * | 2011-05-13 | 2012-11-16 | Univ Nat Changhua Education | Measurement system for butterfly valves |
| CN203432074U (en) * | 2013-07-31 | 2014-02-12 | 浙江申吉钛业股份有限公司 | Electromagnetic tube structure of hot-blast stove |
| CN103954441A (en) * | 2014-04-25 | 2014-07-30 | 武汉工程大学 | Device and method for detecting and testing high-temperature valve based on air heating system |
| CN205655969U (en) * | 2016-03-23 | 2016-10-19 | 中国石油化工股份有限公司 | Device that leaks in simulation gas valve |
| CN208399094U (en) * | 2018-07-25 | 2019-01-18 | 苏州纽威阀门股份有限公司 | A kind of valve seal test device |
| CN208505606U (en) * | 2018-08-03 | 2019-02-15 | 超达阀门集团股份有限公司 | A kind of harsh operating condition valve tester that can monitor valve torque and sealing |
| CN209326908U (en) * | 2018-12-29 | 2019-08-30 | 苏州合能工业设备有限公司 | Heavy caliber gas fume valve air-tightness detection device |
| CN210119328U (en) * | 2019-05-28 | 2020-02-28 | 江苏华洋新思路能源装备股份有限公司 | High-temperature air tightness testing device |
| CN210221485U (en) * | 2019-06-19 | 2020-03-31 | 武汉百耐流体控制设备有限公司 | Gas emptying device for gas flow test |
| CN212057750U (en) * | 2020-04-17 | 2020-12-01 | 济南卓鑫设备安装制造有限公司 | Mining electric heating air furnace |
-
2020
- 2020-12-25 CN CN202011567344.2A patent/CN112729721A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100092320A (en) * | 2009-02-12 | 2010-08-20 | 주식회사 에스앤드더블유아이엔디 | A butterfly valve testing device |
| TW201245660A (en) * | 2011-05-13 | 2012-11-16 | Univ Nat Changhua Education | Measurement system for butterfly valves |
| CN203432074U (en) * | 2013-07-31 | 2014-02-12 | 浙江申吉钛业股份有限公司 | Electromagnetic tube structure of hot-blast stove |
| CN103954441A (en) * | 2014-04-25 | 2014-07-30 | 武汉工程大学 | Device and method for detecting and testing high-temperature valve based on air heating system |
| CN205655969U (en) * | 2016-03-23 | 2016-10-19 | 中国石油化工股份有限公司 | Device that leaks in simulation gas valve |
| CN208399094U (en) * | 2018-07-25 | 2019-01-18 | 苏州纽威阀门股份有限公司 | A kind of valve seal test device |
| CN208505606U (en) * | 2018-08-03 | 2019-02-15 | 超达阀门集团股份有限公司 | A kind of harsh operating condition valve tester that can monitor valve torque and sealing |
| CN209326908U (en) * | 2018-12-29 | 2019-08-30 | 苏州合能工业设备有限公司 | Heavy caliber gas fume valve air-tightness detection device |
| CN210119328U (en) * | 2019-05-28 | 2020-02-28 | 江苏华洋新思路能源装备股份有限公司 | High-temperature air tightness testing device |
| CN210221485U (en) * | 2019-06-19 | 2020-03-31 | 武汉百耐流体控制设备有限公司 | Gas emptying device for gas flow test |
| CN212057750U (en) * | 2020-04-17 | 2020-12-01 | 济南卓鑫设备安装制造有限公司 | Mining electric heating air furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bankston | The transition from turbulent to laminar gas flow in a heated pipe | |
| CN106969792B (en) | One bulb bed Comprehensive Experiment measuring device and method | |
| CN102121910B (en) | Performance test device for micro heat exchanger | |
| CN104966536A (en) | High-temperature working medium heat exchange test system using heat conducting oil as hot fluid and test method | |
| WO2021031699A1 (en) | Liquid metal high-temperature pulsating heat pipe and testing method | |
| US20170322059A1 (en) | Low pressure drop and high temperature flow measuring device | |
| CN105371909A (en) | Novel micro-flow heat-distributed mass flow meter based on stabilized power source | |
| HU222324B1 (en) | Method and apparatus for measuring the amount of heat | |
| CN112880756B (en) | Device and method for testing flow distribution of liquid helium in CICC conductor | |
| CN112729721A (en) | Sealing performance test system for butterfly valve under high-temperature condition | |
| CN106769814B (en) | Low-temperature corrosion detection system and detection method thereof | |
| CN111128416A (en) | Visual thermal hydraulic experiment device and method for dead pipe section of nuclear power station | |
| CN108225891B (en) | High-low temperature medium circulation testing device and method | |
| CN206627259U (en) | A kind of continuous annealing furnace pipe heat exchanger leak detecting device | |
| CN214333056U (en) | Electric high-temperature heating device | |
| CN204830952U (en) | Heat exchanger | |
| CN105136342A (en) | System and method for improving measurement precision of heat exchange amount of heat exchanger under temperature differential condition | |
| KR20110006869U (en) | Unequal length sensor element of thermal mass flow meter | |
| Rodriguez-Garcia et al. | Procedures for testing valves and pressure transducers with molten salt | |
| KR101041434B1 (en) | Mass Flow Meter and Controller | |
| CN211904486U (en) | Ultrasonic heat meter with double flow meters | |
| CN214790534U (en) | Chemical pipeline flow velocity detection device for assisting industrial design | |
| CN219812398U (en) | Temperature control device for high-temperature pressure test | |
| CN214503432U (en) | Heat transfer experimental device | |
| CN204944707U (en) | The system that heat interchanger heat exchange measures accuracy of measurement is improved under micro-temperature difference condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |