CN109163863B - Leakage-proof testing device for heating and ventilation pipeline - Google Patents
Leakage-proof testing device for heating and ventilation pipeline Download PDFInfo
- Publication number
- CN109163863B CN109163863B CN201811120693.2A CN201811120693A CN109163863B CN 109163863 B CN109163863 B CN 109163863B CN 201811120693 A CN201811120693 A CN 201811120693A CN 109163863 B CN109163863 B CN 109163863B
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- pipe
- control valve
- test
- pressure gauge
- testing
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- Expired - Fee Related
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- 238000012360 testing method Methods 0.000 title claims abstract description 101
- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 238000009423 ventilation Methods 0.000 title claims abstract description 29
- 238000004140 cleaning Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 2
- 235000020679 tap water Nutrition 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 17
- 238000001727 in vivo Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
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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
- G01M3/2807—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a leakage-proof testing device for a heating and ventilation pipeline, which comprises: the device comprises a testing tube A, a pressure gauge A, a testing tube B, a pressure gauge B, a cleaning cylinder, a step tank, a top cover and stirring blades; the device main part is transversely worn out to test pipe A, and connects first control valve and second control valve on the test pipe A respectively, the device main part has still traversed test pipe B in vivo, and is connected with the third control valve on the test pipe B, the both ends of wash bowl communicate respectively and have gone into pipe and exit tube, the horizontal pipe end of going into pipe and exit tube all is connected with the on-off valve, there is the micro-machine through the bolt fastening in the middle of the top of top cap, and the bottom of micro-machine is connected with the (mixing) shaft, and the welding has the multiunit stirring leaf on the (mixing) shaft. The accessible is thrown the hole and is added the washing liquid to utilize rivers to send the washing liquid into warm logical pipeline in, make the abundant warm logical pipeline effect to of washing liquid, improve warm logical pipeline's clean effect, can test warm leak protection of leading to and can also to warm logical cleanness.
Description
Technical Field
The invention relates to the technical field of heating and ventilation pipeline testing, in particular to a leakage-proof testing device for a heating and ventilation pipeline.
Background
At present, the heating pipeline in many buildings is all laid underground, and the leakproofness of heating ventilating pipeline is often required to be tested before the fitment to whether the testing heating ventilating pipeline has the leakage point, guarantees the normal heating in later stage.
For example, application numbers are: CN201320261925.2 discloses a full-automatic pipeline testing machine, which comprises a control machine and a water tank that are communicated through a pipeline, wherein the pipeline is provided with a water inlet and a water outlet for connecting a tested pipeline, and the control machine, the pipeline, the tested pipeline and the water tank form a circulating water path; the pipeline is also provided with: two pressure gauges used for testing the water pressure of different positions in the pipeline; a plurality of ball valves for controlling the circulation direction of water and/or air in the pipeline; a flow meter for testing the flow of water in the pipeline. Therefore, the invention can conveniently and quickly detect whether the tightness of the pipeline is good or not and can more accurately test the liquid flow in the pipeline.
Therefore, the existing heating and ventilation pipeline leakage-proof testing device comprises: when testing the leak protection of warm logical pipeline, only adopt single manometer, the test deviation appears easily, problem that the function is single.
Disclosure of Invention
Problem (A)
In summary, the present invention provides a leakage-proof testing device for a heating and ventilation pipeline, which solves the problems of easy test deviation and single function due to the adoption of only a single pressure gauge when testing leakage-proof of the heating and ventilation pipeline through structural and functional improvements.
(II) technical scheme
The invention provides a leakage-proof testing device for a heating and ventilation pipeline, which is used for testing leakage of the heating and ventilation pipeline. The invention provides a leakage-proof testing device for a heating and ventilation pipeline, which specifically comprises: the device comprises a device main body, a square groove, a circular groove, a test tube A, a first control valve, a second control valve, a pressure gauge A, a test tube B, a third control valve, a pressure gauge B, a cleaning cylinder, an inlet tube, an outlet tube, an on-off valve, a step groove, a threaded column, a sealing washer, a top cover, a perforation, a feeding hole, a rubber plug, a nut, a small motor, a stirring shaft, a stirring blade and a connector; the testing pipe A transversely penetrates out of the device main body, the testing pipe A is connected with a first control valve and a second control valve respectively, the first control valve and the second control valve are arranged in a groove above the device main body, the device main body is internally provided with a testing pipe B in a transverse mode, the testing pipe B is connected with a third control valve, one end of the top of the device main body is fixedly provided with a cleaning cylinder, two ends of the cleaning cylinder are respectively communicated with an inlet pipe and an outlet pipe, transverse pipe ends of the inlet pipe and the outlet pipe are respectively connected with an on-off valve, vertical pipe sections of the inlet pipe and the outlet pipe are respectively communicated with the testing pipe A, the outer end side of the top cover is provided with five groups of through holes, the through holes downwards penetrate into a threaded column and are screwed with nuts to fix the top cover on a step groove on the inner side of the top end of the cleaning cylinder, a small motor is fixed in the middle of the top cover through bolts, and a plurality of groups of stirring blades are welded on the stirring shaft.
Further, still be connected with manometer A and manometer B through the tubule respectively on test tube A and the test tube B, and manometer A and manometer B connect respectively in the rear side of first control valve, third control valve, and manometer A and manometer B all set up in the circular slot of device main part.
Furthermore, the height of the inlet pipe penetrating into the cleaning cylinder is higher than the height of the outlet pipe penetrating into the cleaning cylinder.
Further, the second control valve is arranged on the test pipe A between the inlet pipe and the outlet pipe.
Furthermore, a sealing gasket is adhered to the top end of the step groove.
Furthermore, a feeding hole is formed in the top cover, and a rubber plug is plugged in the feeding hole.
Furthermore, the two ends of the test tube A and the test tube B are provided with connectors
Further, the length of the stirring shaft is smaller than the inner height of the cleaning barrel.
(III) advantageous effects
The invention provides a leakage-proof testing device for a heating and ventilation pipeline, which is characterized in that two groups of pressure meters are arranged, so that when the leakage-proof testing of the heating and ventilation pipeline is carried out, the water pressure in the heating and ventilation pipeline can be simultaneously detected through the two groups of pressure meters, and the testing error caused by the damage of one group of pressure meters can be avoided.
The setting of wash bowl, the hole adds the washing liquid is thrown to the accessible, close the second control valve and will go into the on-off valve on pipe and the exit tube and open, make rivers in the test tube A enter into the wash bowl, stir the washing liquid of wash bowl through the stirring leaf simultaneously, make the rivers intensive mixing in washing liquid and the test tube A, and utilize rivers to send the washing liquid into warm logical pipeline in, when containing the washing liquid in the rivers that test tube B flows, close the third control valve on first control valve on the test tube A and the test tube B, quiet waiting a period, make the abundant pipeline effect to warm logical of washing liquid, improve warm logical pipeline's clean effect, can test warm leak protection of leading to and can also be clean to warm logical.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the invention at A;
FIG. 3 is a schematic view of the rear side of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic view of the top cover of FIG. 1 with its components attached to the top cover shown separated upwardly in accordance with the present invention;
FIG. 5 is an enlarged view of the structure at B of the present invention;
FIG. 6 is an enlarged view of the structure at C of the present invention;
FIG. 7 is a cross-sectional front view of the main body of the device of FIG. 4 according to the present invention;
fig. 8 is a schematic view of the structure of the underside of the top cover of the present invention.
In fig. 1 to 8, the correspondence between the part names or lines and the reference numbers is:
1-device body, 101-square groove, 102-round groove, 2-test tube A, 201-first control valve, 202-second control valve, 203-pressure gauge A, 3-test tube B, 301-third control valve, 302-pressure gauge B, 4-cleaning cylinder, 401-inlet tube, 402-outlet tube, 403-on-off valve, 404-step groove, 405-threaded column, 406-sealing gasket, 5-top cover, 501-perforation, 502-feeding hole, 503-rubber plug, 504-nut, 6-small motor, 601-stirring shaft, 602-stirring blade and 7-connector.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Please refer to fig. 1 to 8.
In order to solve the problems that in the prior art, when the leakage of a heating and ventilation pipeline is tested, only a single pressure gauge is adopted, the test deviation is easy to occur, and the function is single, the invention provides a leakage test device of the heating and ventilation pipeline, which is used for testing the leakage of the heating and ventilation pipeline, and comprises the following components: the device comprises a device body 1, a square groove 101, a circular groove 102, a test tube A2, a first control valve 201, a second control valve 202, a pressure gauge A203, a test tube B3, a third control valve 301, a pressure gauge B302, a cleaning barrel 4, an inlet tube 401, an outlet tube 402, an on-off valve 403, a step groove 404, a threaded column 405, a sealing gasket 406, a top cover 5, a perforation 501, a feeding hole 502, a rubber plug 503, a nut 504, a small motor 6, a stirring shaft 601, a stirring blade 602 and a connecting head 7; the testing tube A2 transversely penetrates through the device body 1, the testing tube A2 is connected with the first control valve 201 and the second control valve 202 respectively, the first control valve 201 and the second control valve 202 are arranged in the groove 101 above the device body 1, the testing tube B3 transversely penetrates through the device body 1, the testing tube B3 is connected with the third control valve 301, one end of the top of the device body 1 is fixedly provided with the cleaning barrel 4, two ends of the cleaning barrel 4 are respectively communicated with the inlet tube 401 and the outlet tube 402, the transverse tube ends of the inlet tube 401 and the outlet tube 402 are respectively connected with the on-off valve 403, the vertical tube sections of the inlet tube 401 and the outlet tube 402 are respectively communicated with the testing tube A2, the outer end side of the top cover 5 is provided with five groups of through holes 501, the through holes 501 penetrate downwards into the threaded column 405 and are screwed with nuts to fix the top cover 5 on the step groove 404 on the inner side of the top end of the cleaning barrel 4, the middle of the top cover 5 is fixed with the small-sized motor 6 through bolts, and the bottom of the small-sized motor 6 is connected with a stirring shaft 601, and a plurality of groups of stirring blades 602 are welded on the stirring shaft 601.
Wherein, still be connected with manometer A203 and manometer B302 through the tubule respectively on test tube A2 and the test tube B3, and manometer A203 and manometer B302 are connected respectively in the rear side of first control valve 201, third control valve 301, and manometer A203 and manometer B302 all set up in the circular slot 102 of device main part 1, when utilizing the device to the leak protection test of warm logical pipeline, accessible manometer A203 and manometer B302 detect the water pressure in the warm logical pipeline.
Wherein, the height that goes into pipe 401 and penetrate in the wash bowl 4 is higher than the height that goes out pipe 402 and penetrate in the wash bowl 4, and the washing liquid in the wash bowl 4 of being convenient for flows out through going out pipe 402 more smoothly.
The second control valve 202 is provided in the test tube a2 between the inlet tube 401 and the outlet tube 402, and when the second control valve 202 is closed and the on-off valves 403 in the inlet tube 401 and the outlet tube 402 are opened, the water in the test tube a2 flows into the cleaning cylinder 4 through the inlet tube 401 and flows out through the outlet tube 402.
A gasket 406 is further bonded to the top end of the step groove 404, and when the top lid 5 is fixed to the top of the washing tub 4, the gasket 406 can increase the sealing property between the top end of the washing tub 4 and the top lid 5.
Wherein, the top cover 5 is further provided with a feeding hole 502, a rubber plug 503 is plugged in the feeding hole 502, the rubber plug 503 is taken out, so that the cleaning liquid is added through the feeding hole 502, and the feeding hole 502 can be plugged through the rubber plug 503.
Wherein, the both ends of test tube A2 and test tube B3 all are provided with connector 7, are convenient for through the import and the export of connector 7 coupling hose or warm logical pipeline.
Wherein, the length of (mixing) shaft 601 is less than the internal height of wash bowl 4, avoids the bottom of (mixing) shaft 601 to contact the bottom of wash bowl 4 to influence the rotation of (mixing) shaft 601.
The specific use mode and function of the embodiment are as follows: in the invention, when the leakage prevention of the heating and ventilation pipeline is tested, one ends of a test pipe A2 and a test pipe B3 close to a cleaning cylinder 4 are respectively connected with an inlet and an outlet of the heating and ventilation pipeline, the other end of the test pipe A2 is connected to a tap water pipeline through a hose, a first control valve 201, a second control valve 202 and a third control valve 301 are opened, after water flows out of one end of the test pipe B3, the third control valve 301 is closed, when the values of a force gauge A203 and a pressure gauge B302 reach a test value, the first control valve 201 is closed, after standing for a period of time, whether the values of the pressure gauge A203 and the pressure gauge B302 change or not is observed, if the value changes, a leakage point exists on the heating and ventilation pipeline, when the heating and ventilation pipeline needs to be cleaned, cleaning liquid is added through a feeding hole 502, then a rubber plug 503 is returned to the feeding hole 502, the second control valve 202 is closed, and an on-off valve 403 on inlet pipes 401 and an outlet pipe 402 is opened, make rivers in the test tube A2 enter into wash bowl 4, stir the washing liquid of wash bowl 4 through stirring leaf 602 simultaneously, make the rivers intensive mixing in washing liquid and the test tube A2, and utilize rivers to send the washing liquid into warm logical pipeline in, when containing the washing liquid in the rivers that test tube B3 flows out, close first control valve 201 on the test tube A2 and the third control valve 301 on the test tube B3, a section time such as quiet, make the abundant pipeline effect to warm logical pipeline effect of washing liquid, improve the clean effect of warm logical pipeline, can test warm leak protection of leading to can also to warm logical cleanness.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (1)
1. The utility model provides a warm leak protection testing arrangement who leads to pipeline for leak testing warm logical pipeline, its characterized in that includes: the device comprises a device body (1), a square groove (101), a circular groove (102), a test tube A (2), a first control valve (201), a second control valve (202), a pressure gauge A (203), a test tube B (3), a third control valve (301), a pressure gauge B (302), a cleaning barrel (4), an inlet tube (401), an outlet tube (402), an on-off valve (403), a step groove (404), a threaded column (405), a sealing washer (406), a top cover (5), a perforation (501), a feeding hole (502), a rubber plug (503), a nut (504), a small motor (6), a stirring shaft (601), a stirring blade (602) and a connector (7); the device comprises a device body (1), a testing pipe A (2) transversely penetrates through the device body (1), the testing pipe A (2) is connected with a first control valve (201) and a second control valve (202) respectively, the first control valve (201) and the second control valve (202) are arranged in a groove (101) above the device body (1), a testing pipe B (3) transversely penetrates through the device body (1), a third control valve (301) is connected to the testing pipe B (3), a cleaning barrel (4) is fixedly mounted at one end of the top of the device body (1), two ends of the cleaning barrel (4) are communicated with an inlet pipe (401) and an outlet pipe (402) respectively, the transverse pipe ends of the inlet pipe (401) and the outlet pipe (402) are connected with an on-off valve (403), the vertical pipe sections of the inlet pipe (401) and the outlet pipe (402) are communicated with the testing pipe A (2) respectively, and five groups of through holes (501) are arranged on the outer end side of a top cover (5), the through hole (501) penetrates downwards into the threaded column (405) and is screwed with the nut (504) to fix the top cover (5) on the step groove (404) on the inner side of the top end of the cleaning cylinder (4), the middle of the top cover (5) is fixed with the small motor (6) through a bolt, the bottom of the small motor (6) is connected with the stirring shaft (601), and the stirring shaft (601) is welded with a plurality of groups of stirring blades (602);
the testing tube A (2) and the testing tube B (3) are further connected with a pressure gauge A (203) and a pressure gauge B (302) through thin tubes respectively, the pressure gauge A (203) and the pressure gauge B (302) are connected to the rear sides of the first control valve (201) and the third control valve (301) respectively, and the pressure gauge A (203) and the pressure gauge B (302) are arranged in a circular groove (102) of the device main body (1);
the height of the inlet pipe (401) penetrating into the cleaning cylinder (4) is higher than the height of the outlet pipe (402) penetrating into the cleaning cylinder (4);
the second control valve (202) is arranged on the test pipe A (2) between the inlet pipe (401) and the outlet pipe (402);
a sealing gasket (406) is also stuck on the top end of the step groove (404);
a throwing hole (502) is further formed in the top cover (5), and a rubber plug (503) is plugged in the throwing hole (502);
connectors (7) are arranged at two ends of the test tube A (2) and the test tube B (3);
the length of the stirring shaft (601) is less than the internal height of the cleaning cylinder (4);
when the leakage prevention of the heating and ventilation pipeline is tested, one ends of a test pipe A (2) and a test pipe B (3) close to a cleaning barrel (4) are respectively connected with an inlet and an outlet of the heating and ventilation pipeline, the other end of the test pipe A (2) is connected to a tap water pipeline through a hose, a first control valve (201), a second control valve (202) and a third control valve (301) are opened, after water flows out of one end of the test pipe B (3), the third control valve (301) is closed, when numerical values on a force gauge A (203) and a pressure gauge B (302) reach test values, the first control valve (201) is closed, after standing for a period of time, whether the numerical values on the pressure gauge A (203) and the pressure gauge B (302) change or not is observed, if the numerical values change, a leakage point exists on the heating and ventilation pipeline is indicated, when the heating and ventilation pipeline needs to be cleaned, cleaning liquid is added through a feeding hole (502), then the rubber plug (503) is plugged back into the feeding hole (502), the second control valve (202) is closed, the on-off valve (403) on the inlet pipe (401) and the outlet pipe (402) is opened, water flow in the test pipe A (2) enters the cleaning cylinder (4), meanwhile, cleaning liquid in the cleaning cylinder (4) is stirred through the stirring blade (602), the cleaning liquid and water flow in the test pipe A (2) are fully mixed, the cleaning liquid is fed into the heating and ventilation pipeline through the water flow, when the water flow flowing out of the test pipe B (3) contains the cleaning liquid, the first control valve (201) on the test pipe A (2) and the third control valve (301) on the test pipe B (3) are closed, the cleaning liquid fully acts on the heating and ventilation pipeline after a period of static waiting, the cleaning liquid improves the cleaning effect of the heating and ventilation pipeline, can be tested for leakage prevention of the heating and ventilation, and can be cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120693.2A CN109163863B (en) | 2018-09-26 | 2018-09-26 | Leakage-proof testing device for heating and ventilation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120693.2A CN109163863B (en) | 2018-09-26 | 2018-09-26 | Leakage-proof testing device for heating and ventilation pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109163863A CN109163863A (en) | 2019-01-08 |
| CN109163863B true CN109163863B (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811120693.2A Expired - Fee Related CN109163863B (en) | 2018-09-26 | 2018-09-26 | Leakage-proof testing device for heating and ventilation pipeline |
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| CN (1) | CN109163863B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125075A (en) * | 2021-04-20 | 2021-07-16 | 陈亮 | Leakage-proof testing device for heating and ventilation pipeline |
| CN113029444B (en) * | 2021-05-28 | 2021-07-27 | 南昌市建筑科学研究所（南昌市建筑工程质量检测中心） | Building heating and ventilation pipeline's leakproofness pressure test device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2727383A (en) * | 1953-04-21 | 1955-12-20 | Gen Air Products Corp | Method and apparatus for testing and cleaning pipe lines |
| US6370721B1 (en) * | 2000-10-03 | 2002-04-16 | Tuboscope I/P, Inc. | Variable speed pig for pipeline applications |
| US8997553B2 (en) * | 2011-04-14 | 2015-04-07 | Cincinnati Test Systems, Inc. | Leak testing device and method |
| CN102721511A (en) * | 2012-06-28 | 2012-10-10 | 双威欣龙(安徽)液压有限公司 | Multi-station hydraulic hose assembly washing and testing device |
| CN203287169U (en) * | 2013-05-10 | 2013-11-13 | 珠海市麦斯优联模具有限公司 | Fully-automatic pipeline test machine |
| CN104098059A (en) * | 2014-07-30 | 2014-10-15 | 梧州市旺捷机械制造有限公司 | Easily cleaned liquid filling device |
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| CN109163863A (en) | 2019-01-08 |
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Effective date of registration: 20200526 Address after: 210000 Kechuang building, Futian Road, Zhetang street, Lishui Economic Development Zone, Nanjing City, Jiangsu Province Applicant after: Nanjing Lishui hi tech Venture Capital Management Co.,Ltd. Address before: 300401 Xiping Road, Beichen District,, No. 5340, Hebei University of Technology Applicant before: Wang Huiwen |
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