CN109186891B - Heating pipe sealing test equipment - Google Patents
Heating pipe sealing test equipment Download PDFInfo
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- CN109186891B CN109186891B CN201811072894.XA CN201811072894A CN109186891B CN 109186891 B CN109186891 B CN 109186891B CN 201811072894 A CN201811072894 A CN 201811072894A CN 109186891 B CN109186891 B CN 109186891B
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- pressure water
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- pipe
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- 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
- G01M3/2807—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 pipes
- G01M3/2815—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 pipes using pressure measurements
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a heating pipe sealing test device which comprises a rack, wherein an operation deep groove is formed in the front end of the rack, a high-pressure water tank and a pipeline system are connected to the back of the operation deep groove, and an overpressure protection mechanism is arranged at a detection port, communicated with the operation deep groove, of the high-pressure water tank and the pipeline system; a high-pressure water pressurizing system is arranged on the right side of the rack, the input end of the high-pressure water pressurizing system is connected with a water level compensation system, and the output end of the high-pressure water pressurizing system is connected with a high-pressure water tank and a pipeline system; the rack is provided with a test system which is connected with the high-pressure water tank, the pipeline system, the high-pressure water pressurization system and the water level compensation system; the testing system is connected with a thermal printer which is arranged in the frame and used for printing test data and a stabilized voltage power supply which is positioned in the frame. The device is simple to operate and convenient to use, can greatly improve the stability in the sealing test process of the heating pipe, realizes automatic water compensation, and has the advantages of adjustable test time and pressure, strong test stability and high installation coefficient.
Description
Technical Field
The invention relates to the technical field of heating pipe testing, in particular to heating pipe sealing testing equipment.
Background
When the tightness of the heating pipe is tested, the existing testing equipment is split type assembling equipment, a water pressure test box, pressurizing equipment and a stopwatch are adopted, the heating pipe needs to be placed into the water pressure test box when the equipment is tested, and a nut needs to reach corresponding torque; the water valve needs to be opened manually to drain water, and the air pressure in the water drainage valve cylinder needs to be closed manually to reach 2MPa after the water drainage is finished; because the pressure of the box body and the pipeline reaches a certain high pressure during testing, the heating pipe is arranged outside the box body under the unstable pressure impact in the test box, so that potential safety hazards are easily caused; and the water inlet and outlet of the test box need manual control, the test time needs manual tracking, and the operation is complicated, so that the test is not facilitated.
Disclosure of Invention
In order to avoid and solve the technical problems, the invention provides a heating pipe sealing test device.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a heating pipe sealing test device comprises a rack, wherein an operation deep groove is formed in the front end of the rack, a high-pressure water tank and a pipeline system are connected to the back of the operation deep groove, and an overpressure protection mechanism is arranged at a detection port, communicated with the operation deep groove, of the high-pressure water tank and the pipeline system;
a high-pressure water pressurizing system is arranged on the right side of the rack, the input end of the high-pressure water pressurizing system is connected with a water level compensation system, and the output end of the high-pressure water pressurizing system is connected with a high-pressure water tank and a pipeline system;
the rack is provided with a test system connected with the high-pressure water tank, the pipeline system, the high-pressure water pressurization system and the water level compensation system;
the test system is connected with a thermal printer which is arranged in the frame and used for printing test data and a stabilized voltage power supply which is positioned in the frame.
Further, high pressure water tank and pipe-line system include high pressure water tank, the inlet tube and the outlet pipe that link to each other with high pressure water tank, all install the electric switch valve on inlet tube and the outlet pipe, the downside that lies in the electric switch valve on the outlet pipe is connected with the communicating anti-leakage water pipe of deep groove of operation.
Furthermore, the high-pressure water pressurization system comprises a pump and a pressure tank connected with the output end of the pump, and the output end of the pressure tank is connected with the water inlet pipe.
Further, the water level compensation system comprises a water tank; the water tank is communicated with a first pipeline which is externally connected with a water supply pipe; the water tank is communicated with a second pipeline connected with the input end of the pump; the bottom of the water tank is connected with a third pipeline which is externally connected with a drain pipe; the first pipeline and the third pipeline are respectively provided with an electromagnetic valve; and a water level sensor is arranged on the inner wall of the water tank.
Further, the excessive pressure protection mechanism includes that two bolted connections are at mount pad, the clamp plate of bolted connection on the mount pad on the operation deep groove, be equipped with on the clamp plate and support step groove, the bolted connection on the heating pipe and be located the layering in step groove the place ahead tightly.
Further, the upper end and the lower end of the mounting seat are provided with strip-shaped grooves, the two ends of the pressing plate are horizontally sleeved with shoulder long pins, and the shoulder long pins horizontally slide in the strip-shaped grooves to be limited, so that secondary protection is realized on the heating pipe after the pressing plate and the pressing strip are failed.
Furthermore, the test system comprises a PLC controller, and the PLC controller is connected with a touch screen, an electrode clamp, a start button, a stop button and an emergency stop button.
Furthermore, the frame is hinged with a cover plate matched with the operation deep groove, and the cover plate is provided with a transparent observation window.
In the using process of the invention:
aiming at the defect that the heating pipe is easy to impact out of the tank body due to large pressure of the tank body, an overvoltage protection mechanism is arranged at a detection port of a high-pressure water tank for detecting the insertion of the heating pipe so as to ensure the reliability of the test process;
aiming at the defect of unstable pressure of the test tank body, a high-pressure water pressurization system is additionally arranged to work, water is injected into the water tank until the water pressure reaches 2Mpa, the pressurization system stops pressurizing, the pressurization system stops working at the moment, the PLC monitors the pressure in the tank at the moment, the pressure is smaller than the set lower limit pressurization system, and the pressure in the water tank is kept balanced at about 2Mpa all the time;
aiming at the defect that the tank body can not automatically compensate water, the equipment comprises a high-pressure water tank, a pipeline system, a high-pressure water pressurizing system and a water level compensating system; pressing a start button on the touch screen to automatically time, pressurize and supplement water, pressurizing the water to 2Mpa by the water pressurizing system, maintaining the pressure for 24 hours, and then automatically releasing the pressure to finish the test.
The invention has the beneficial effects that: the device is simple to operate and convenient to use, can greatly improve the stability in the sealing test process of the heating pipe, realizes automatic water compensation, and has the advantages of adjustable test time and pressure, strong test stability and high installation coefficient.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic diagram of the left-side view of the internal structure of the present invention;
FIG. 3 is a schematic view of the installation structure of the high pressure water pressurization system and the water level compensation system in the left view direction according to the present invention;
FIG. 4 is a front view of the overvoltage protection mechanism of the present invention;
FIG. 5 is a schematic structural view of the overvoltage protection mechanism on the operating deep groove in the present invention;
FIG. 6 is a control block diagram of a test system according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
As shown in fig. 1 to 6, a heating pipe sealing test device comprises a rack 1, wherein an operation deep groove 2 is arranged at the front end of the rack 1, a high-pressure water tank and a pipeline system 3 are connected to the back of the operation deep groove 2, and an overpressure protection mechanism 5 is arranged at a detection port of the high-pressure water tank and pipeline system 3, which is communicated with the operation deep groove 2;
a high-pressure water pressurizing system 6 is arranged on the right side of the rack 1, the input end of the high-pressure water pressurizing system 6 is connected with a water level compensation system 7, and the output end of the high-pressure water pressurizing system 6 is connected with a high-pressure water tank and a pipeline system 3;
the rack 1 is provided with a test system 8 which is connected with a high-pressure water tank and pipeline system 3, a high-pressure water pressurization system 6 and a water level compensation system 7;
the test system 8 is connected with a thermal printer 9 which is arranged in the machine frame 1 and is used for printing test data and a stabilized voltage power supply 10 which is positioned in the machine frame 1.
The high-pressure water tank and pipeline system 3 comprises a high-pressure water tank 31, a water inlet pipe 32 and a water outlet pipe 33 which are connected with the high-pressure water tank 31, wherein electric switch valves 34 are respectively arranged on the water inlet pipe 32 and the water outlet pipe 33, and a leakage-proof water pipe 35 which is communicated with the operation deep groove 2 is connected to the lower side of the water outlet pipe 33 which is positioned on the electric switch valves 34. The electric switch valve 34 is connected with the test system 8, the electric switch valve 34 is started to add water into the high-pressure water tank 31 by operating on the test system 8, and the leakage-proof water pipe 35 avoids water accumulation in the operation deep groove 2 and timely drains water.
The high-pressure water pressurization system 6 comprises a pump 61 and a pressure tank 62 connected with the output end of the pump 61, and the output end of the pressure tank 62 is connected with the water inlet pipe 32.
The water level compensation system 7 comprises a water tank 71; the water tank 71 is communicated with a first pipeline 72 externally connected with a water supply pipe; the water tank 71 is communicated with a second pipeline 73 connected with the input end of the pump 61; the bottom of the water tank 71 is connected with a third pipeline 74 externally connected with a drain pipe; the first pipeline 72 and the third pipeline 74 are both provided with electromagnetic valves 75; a water level sensor 76 is installed on an inner wall of the water tank 71. The electromagnetic valve 75 and the water level sensor 76 are both connected with the test system 8, by operating on the test system 8, the electromagnetic valve 75 on the first pipeline 72 is started to add water into the water tank 71, the pump 61 pumps water in the water tank 71 through the second pipeline 73, the water level sensor 76 detects the water level in the water tank 71 to replenish the water level in time, and when drainage is needed, the electromagnetic valve 75 of the third pipeline 74 is started to drain water.
The overpressure protection mechanism 5 comprises a mounting seat 51 and a pressing plate 52, wherein the two mounting seat 51 are connected onto the operation deep groove 2 through bolts, the pressing plate 52 is connected onto the mounting seat 51 through bolts, a step groove 52a abutting on the heating pipe 11 is arranged on the pressing plate 52, and a pressing strip 53 located in front of the step groove 52a is connected through bolts. Aiming at the defect that the heating pipe 11 is easy to be impacted due to the large pressure of the high-pressure water tank 31: a protection mechanism is arranged at a detection port of the heating pipe 11 inserted into the high-pressure water tank 31, and the reliability of the test is ensured through a pressure plate 52 and a pressing strip 53 which are rigidly connected.
The upper end and the lower end of the mounting seat 51 are respectively provided with a strip-shaped groove 51a, the two ends of the pressing plate 52 are horizontally sleeved with a long pin 54 with a shoulder, and the long pin 54 with the shoulder horizontally slides in the strip-shaped groove 51a to be limited, so that secondary protection is realized on the heating pipe after the pressing plate and the pressing strip are failed. When the device is used, after the pressing plate 52 and the pressing strip 53 are both failed, the long pin 54 with the shoulder can slide in the strip-shaped groove 51a and is limited, so that secondary protection of the heating pipe 11 is realized, and the reliability of the testing process is further improved.
The test system 8 comprises a PLC 81, and the PLC 81 is connected with a touch screen 82, an electrode clamp 86, a start button 83, a stop button 84 and an emergency stop button 85.
The electrode clamps 86 are three and are respectively connected with a zero line, a live line and a ground line. In use, the electrode holder 86 is connected to and energized by an electrode on the heater tube 11.
The frame 1 is hinged with a cover plate 4 matched with the operation deep groove 2, and the cover plate 4 is provided with a transparent observation window 4 a.
When the device is used, the heating pipe 11 is inserted into the detection port of the high-pressure water tank 31, the bolt is screwed down to compress the heating pipe 11, so that the heating pipe 11 is compressed on the detection port of the high-pressure water tank 31, tight sealing is ensured, the bolt is required to be screwed down certainly, and then the overpressure protection mechanism 5 is pressed, and the shoulder long pin 54 is arranged; the above work ensures that the start button 83 is pressed after no error, if the shoulder long pin 54 of the overvoltage protection mechanism 5 is not inserted, the start is invalid, and the touch screen 82 gives an alarm to prompt repeated operation until the protection measure is finished and the start button 83 is pressed at this time.
Then, the high-pressure water pressurizing system 6 works, water is injected into the high-pressure water tank 31 until the water pressure reaches 2Mpa, the high-pressure water pressurizing system 6 stops pressurizing, the pressure pressurizing system stops working at the moment, the PLC 81 monitors the pressure in the water tank at the moment, the pressure is smaller than the set lower limit high-pressure water pressurizing system 6, the pressure in the high-pressure water tank 31 is always kept balanced at about 2Mpa, the pressure is automatically released after 24 hours of pressure maintaining, the touch screen 82 prompts that the test is finished, and the next experiment is waited.
Finally, the test result should meet the requirements of electrical strength (1250V/5mA/1min), insulation resistance (cold state > 100M omega, hot state > 20M omega) and leakage current (less than 0.5 mA).
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a heating pipe seals test equipment, includes frame (1), its characterized in that: an operation deep groove (2) is formed in the front end of the rack (1), a high-pressure water tank and a pipeline system (3) are connected to the back of the operation deep groove (2), and an overpressure protection mechanism (5) is arranged at a detection port, communicated with the operation deep groove (2), of the high-pressure water tank and pipeline system (3);
a high-pressure water pressurizing system (6) is arranged on the right side of the rack (1), the input end of the high-pressure water pressurizing system (6) is connected with a water level compensation system (7), and the output end of the high-pressure water pressurizing system (6) is connected with a high-pressure water tank and a pipeline system (3);
the rack (1) is provided with a test system (8) which is connected with the high-pressure water tank and pipeline system (3), the high-pressure water pressurization system (6) and the water level compensation system (7);
the testing system (8) is connected with a thermal printer (9) which is arranged in the frame (1) and is used for printing testing data and a stabilized voltage power supply (10) which is positioned in the frame (1), the overpressure protection mechanism (5) comprises two installation seats (51) which are connected with the operation deep groove (2) through bolts and a pressure plate (52) which is connected with the installation seats (51) through bolts, the pressing plate (52) is provided with a step groove (52a) which is tightly propped against the heating pipe (11), a pressing strip (53) which is positioned in front of the step groove (52a) is connected with a bolt, strip-shaped grooves (51a) are respectively arranged at the upper end and the lower end of the mounting seat (51), long pins (54) with shoulders are horizontally sleeved at the two ends of the pressing plate (52), the long pin (54) with the shoulder is limited to horizontally slide in the strip-shaped groove (51a), so that secondary protection is realized on the heating pipe after the pressing plate and the pressing strip are both failed;
the high-pressure water tank and pipeline system (3) comprises a high-pressure water tank (31);
the heating pipe (11) is inserted into the detection port of the high-pressure water tank (31), and the bolt is screwed down to compress the heating pipe (11), so that the heating pipe (11) is compressed on the detection port of the high-pressure water tank (31).
2. The heating tube sealing test apparatus according to claim 1, wherein: high-pressure water tank and pipe-line system (3) still include inlet tube (32) and outlet pipe (33) that link to each other with high-pressure water tank (31), all install electric switch valve (34) on inlet tube (32) and outlet pipe (33), the downside that lies in electric switch valve (34) on outlet pipe (33) is connected with and operates communicating anti-leakage water pipe (35) in deep trouth (2).
3. The heating tube sealing test apparatus according to claim 2, wherein: the high-pressure water pressurization system (6) comprises a pump (61) and a pressure tank (62) connected with the output end of the pump (61), and the output end of the pressure tank (62) is connected with the water inlet pipe (32).
4. The heating tube sealing test apparatus according to claim 3, wherein: the water level compensation system (7) comprises a water tank (71);
the water tank (71) is communicated with a first pipeline (72) externally connected with a water supply pipe;
the water tank (71) is communicated with a second pipeline (73) connected with the input end of the pump (61);
the bottom of the water tank (71) is connected with a third pipeline (74) externally connected with a drain pipe;
the first pipeline (72) and the third pipeline (74) are respectively provided with an electromagnetic valve (75);
and a water level sensor (76) is arranged on the inner wall of the water tank (71).
5. The heating tube sealing test apparatus according to claim 1, wherein: the test system (8) comprises a PLC (programmable logic controller) 81, wherein the PLC 81 is connected with a touch screen (82), an electrode clamp (86), a start button (83), a stop button (84) and an emergency stop button (85).
6. The heating tube sealing test apparatus according to claim 1, wherein: frame (1) is gone up to articulate have with operation deep trouth (2) complex apron (4), be equipped with transparent observation window (4a) on apron (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811072894.XA CN109186891B (en) | 2018-09-14 | 2018-09-14 | Heating pipe sealing test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811072894.XA CN109186891B (en) | 2018-09-14 | 2018-09-14 | Heating pipe sealing test equipment |
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| CN109186891A CN109186891A (en) | 2019-01-11 |
| CN109186891B true CN109186891B (en) | 2020-10-09 |
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| CN201811072894.XA Active CN109186891B (en) | 2018-09-14 | 2018-09-14 | Heating pipe sealing test equipment |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440990B (en) * | 2019-08-16 | 2020-03-27 | 浦江亿岩机械设备有限公司 | Electric heating pipe leaks whitewashed check out test set |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535113A (en) * | 2014-12-30 | 2015-04-22 | 信宜市汇美电器有限公司 | Electric heating tube testing device and method |
| CN106918752A (en) * | 2015-12-28 | 2017-07-04 | 比亚迪股份有限公司 | Equipment and its detection method for detecting ptc heater |
| CN108381237A (en) * | 2018-05-15 | 2018-08-10 | 淮海工业集团有限公司 | A kind of countersunk head pressure-adjustable plate fixture |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7970494B2 (en) * | 2002-09-23 | 2011-06-28 | Liquidbreaker, Llc | Systems and methods for monitoring relief valve drain in hot water Heater |
| US7256372B2 (en) * | 2005-12-07 | 2007-08-14 | Aos Holding Company | Fluid-heating apparatus, circuit for heating a fluid, and method of operating the same |
| KR101011457B1 (en) * | 2009-02-23 | 2011-01-28 | 양 전자시스템 주식회사 | Apparatus for cooling and desiccating FPD substrate during the electric property test |
| CN104535269A (en) * | 2014-12-03 | 2015-04-22 | 江苏武进不锈股份有限公司 | Automatic air tightness detection apparatus of heat exchange tube |
| CN205038021U (en) * | 2015-09-01 | 2016-02-17 | 安徽苏立电热科技股份有限公司 | Leakage detection device of electric heating tube flange |
| CN105352808B (en) * | 2015-11-20 | 2018-06-26 | 王旭明 | A kind of U-shaped air-conditioning heating tube soldering opening detection device |
| CN205581219U (en) * | 2015-12-28 | 2016-09-14 | 惠州比亚迪实业有限公司 | A equipment for detecting PTC heater |
| CN207197740U (en) * | 2017-08-24 | 2018-04-06 | 太仓格瑞斯金属制品有限公司 | A kind of heating tube air-tightness detection device |
| CN207133015U (en) * | 2017-09-06 | 2018-03-23 | 肇庆市庆林电热电器有限公司 | A kind of electrothermal tube water sealing property compression testing device |
| CN107677430A (en) * | 2017-10-10 | 2018-02-09 | 苏州海陆重工股份有限公司 | The leakage detection apparatus of surface condenser tube-to-tubesheet joint |
-
2018
- 2018-09-14 CN CN201811072894.XA patent/CN109186891B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535113A (en) * | 2014-12-30 | 2015-04-22 | 信宜市汇美电器有限公司 | Electric heating tube testing device and method |
| CN106918752A (en) * | 2015-12-28 | 2017-07-04 | 比亚迪股份有限公司 | Equipment and its detection method for detecting ptc heater |
| CN108381237A (en) * | 2018-05-15 | 2018-08-10 | 淮海工业集团有限公司 | A kind of countersunk head pressure-adjustable plate fixture |
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| CN109186891A (en) | 2019-01-11 |
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Denomination of invention: A sealing test equipment for heating pipe Effective date of registration: 20210301 Granted publication date: 20201009 Pledgee: Wuhu Branch of China Post Savings Bank Co.,Ltd. Pledgor: ANHUI SULI TECHNOLOGY Co.,Ltd. Registration number: Y2021980001356 |
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Date of cancellation: 20220317 Granted publication date: 20201009 Pledgee: Wuhu Branch of China Post Savings Bank Co.,Ltd. Pledgor: ANHUI SULI TECHNOLOGY CO.,LTD. Registration number: Y2021980001356 |