CN108362442B - Sealing ring-free leakage test device for groove type pipe joint for fire control - Google Patents
Sealing ring-free leakage test device for groove type pipe joint for fire control Download PDFInfo
- Publication number
- CN108362442B CN108362442B CN201810273244.5A CN201810273244A CN108362442B CN 108362442 B CN108362442 B CN 108362442B CN 201810273244 A CN201810273244 A CN 201810273244A CN 108362442 B CN108362442 B CN 108362442B
- Authority
- CN
- China
- Prior art keywords
- water
- pipe
- bracket
- sealing ring
- collection chamber
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000005303 weighing Methods 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Pipeline Systems (AREA)
Abstract
The invention relates to the technical field of product detection, and particularly discloses a sealing ring-free leakage test device for a groove type pipe joint for fire protection. This trench type coupling does not have sealing washer leakage test device for fire control, including circulation tank, its characterized in that: the circulating water tank is sequentially provided with a bracket A, a bracket B and a bracket C from left to right, wherein a left end closed pipe is arranged on the bracket A, a right pipe is arranged on the bracket B and the bracket C in an erected mode, and a pipe joint sample is arranged between the left end closed pipe and the right pipe; the water collection chamber consisting of the movable end of the water collection chamber and the fixed end of the water collection chamber is sleeved on the periphery of the pipe joint sample, a telescopic shaft motor is mounted on the end of the closed pipe at the left end, and a motor shaft of the telescopic shaft motor is connected with the movable end of the water collection chamber; the circulating water tank is provided with a bracket for installing an electronic scale, and a container is placed on the electronic scale. The invention has simple structure and reasonable design, reduces the operation of experimental personnel and human interference factors, realizes the detection automation, and improves the detection quality and efficiency.
Description
Technical Field
The invention relates to the technical field of product detection, in particular to a sealing ring-free leakage test device for a groove type pipe joint for fire protection.
Background
The groove type pipe joint for fire control requires that the leakage amount of the joint of the water pressure 0.2MPa and the water pressure 2min is not more than a specified value under the condition of no sealing ring, and the test is complex in operation, high in labor intensity, high in interference factors, low in detection quality and efficiency, and no sealing ring-free leakage test device which is more suitable for the groove type pipe joint for fire control is available in the prior art.
Disclosure of Invention
The invention provides a sealing ring-free leakage test device for a groove type pipe joint for fire protection, which has the advantages of simple structure, convenience in use and high automation degree, and overcomes the defects of the prior art.
The invention is realized by the following technical scheme:
The utility model provides a trench type coupling does not have sealing washer leakage test device for fire control, includes the circulation flume of placing subaerial, its characterized in that: the circulating water tank is sequentially provided with a bracket A with a concave rod A arranged at the top, a bracket B with a cross rod A arranged at the top and a bracket C with a concave rod B arranged at the top from left to right, wherein the concave rod A is provided with a left end closed pipe, the cross rod A and the concave rod B are provided with a right pipe in an erected mode, and a sealing ring-free groove type pipe joint sample is arranged between the left end closed pipe and the right pipe; the water collecting chamber consisting of the movable end of the water collecting chamber and the fixed end of the water collecting chamber is sleeved on the periphery of the sealing ring-free groove-type pipe joint sample, the fixed end of the water collecting chamber is fixed on the right pipe through a flange plate, the movable end of the water collecting chamber is mounted on the left end sealing pipe through a connecting plate, a telescopic shaft motor is mounted on the end of the left end sealing pipe through a fixing clamp, and a motor shaft of the telescopic shaft motor is connected with the movable end of the water collecting chamber; a bracket positioned below the water outlet of the water collecting chamber is arranged on the circulating water tank, an electronic scale is arranged on the bracket, and a container for weighing the leakage water is placed on the electronic scale; the water outlet pipe at the bottom of the circulating water tank is connected with a pressurizing circulating pump through a hose, and the pressurizing circulating pump is connected with the water inlet pipe at the bottom of the right pipe through a water inlet hose.
The invention realizes erection and installation of the sealing ring-free groove type pipe joint sample through the left end closed pipe and the right pipe; the water collecting chamber is formed by a movable end of the water collecting chamber and a fixed end of the water collecting chamber and is used for collecting water leakage; the complete detection of the leakage test is realized by the leakage water quantity weighing container and the electronic scale for weighing who leaks.
The more preferable technical scheme of the invention is as follows:
The upper part of the right pipe end head is provided with an electromagnetic valve A, the electromagnetic valve A is connected with a water touch sensor, and a water inlet pipe of the electromagnetic valve A is provided with a pressure sensor A and a voltage stabilizer; the pressurizing circulating pump is provided with a pressure sensor B, the connection part of the pressurizing circulating pump and the water inlet hose is provided with an electromagnetic valve B, and the connection part of the pressurizing circulating pump and the hose is provided with an electromagnetic valve C; the telescopic shaft motor, the voltage stabilizer, the electromagnetic valve A, the electromagnetic valve B, the electromagnetic valve C, the water touch sensor, the pressure sensor A, the pressure sensor B, the pressurizing circulating pump and the electronic scale are all connected with the display PLC controller through control lines, and the display PLC controller is programmed; the control of the water pressure is realized through the connection of the electromagnetic valve, the pressure sensor, the voltage stabilizer and the like with the display PLC controller.
And a bracket D is arranged on the circulating water tank, and a cross rod B is arranged at the top of the bracket D.
The movable end of the water collecting chamber is fixed on the end face through a bolt A, and a sealing ring A is arranged between the movable end of the water collecting chamber and the left end closed pipe to realize the sealing connection between the movable end of the water collecting chamber and the left end closed pipe.
The fixed end of the water collecting chamber is connected with the flange plate through the bolt B, the flange plate is fixed on the right pipe through the bolt C, and the sealing ring B is arranged between the fixed end of the water collecting chamber and the right pipe, so that the sealing connection between the fixed end of the water collecting chamber and the right pipe is realized.
The bottom of the leakage water quantity weighing container is provided with a container water outlet, and the container water outlet is provided with a solenoid valve D connected with a display PLC controller, so that the control of the water discharge in the leakage water quantity weighing container is realized.
The invention has simple structure and reasonable design, solves the problems of dynamic collection and weighing of the sealing ring-free water leakage of the grooved pipe joint, reduces the operation of experimenters and human interference factors, realizes detection automation, and improves the detection quality and efficiency.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a state diagram showing the completion of the test of the present invention.
In the figure, 1 ground, 2 circulating water tanks, 3 brackets A,4 concave rods A,5 fixing clamps, 6 left end closed pipes, 7 telescopic shaft motors, 8 motor shafts, 9 cross rods B,10 bolts A,11 connecting plates, 12 water collection chamber moving ends, 13 sealing rings A,14 sealing ring-free groove type pipe joint samples, 15 water collection chamber fixed ends, 16 flanges, 17 bolts B,18 bolts C,19 cross rods A,20 concave rods B,21 right pipes, 22 electromagnetic valves A,23 touch water sensors, 24 water inlet pipes, 25 pressure sensors A,26 pressure regulators, 27 water inlet hoses, 28 display PLC controllers, 29 electromagnetic valves B,30 pressure sensors B,31 boost circulating pumps, 32 electromagnetic valves C,33 hoses, 34 water outlet pipes, 35 sealing rings B,36 brackets C,37 brackets B,38 leakage water weighing containers, 39 electronic scales, 40 brackets, 41 water collection chamber water outlet ports, 42D, 43 container outlet ports, 44 brackets D.
Detailed Description
The drawings illustrate one embodiment of the invention. The embodiment comprises a circulating water tank 2 placed on the ground 1, wherein a bracket A3 with a concave rod A4 arranged at the top, a bracket B37 with a cross rod A19 arranged at the top and a bracket C36 with a concave rod B20 arranged at the top are sequentially arranged on the circulating water tank 2 from left to right, a left end closed pipe 6 is arranged on the concave rod A4, a right pipe 21 is erected on the cross rod A19 and the concave rod B20, and a sealing ring-free groove type pipe joint sample 14 is arranged between the left end closed pipe 6 and the right pipe 21; the water collection chamber consisting of a water collection chamber moving end 12 and a water collection chamber fixed end 15 is sleeved on the periphery of a sealing ring-free groove type pipe joint sample 14, the water collection chamber fixed end 15 is fixed on a right pipe 21 through a flange 16, the water collection chamber moving end 12 is installed on a left end closed pipe 6 through a connecting plate 11, a telescopic shaft motor 7 is installed on the end head of the left end closed pipe 6 through a fixing clamp 5, and a motor shaft 8 of the telescopic shaft motor 7 is connected with the water collection chamber moving end 12; the circulating water tank 2 is provided with a bracket 40 positioned below a water collecting chamber water outlet 41, an electronic scale 39 is arranged on the bracket 40, and a container 38 for weighing the leaked water is arranged on the electronic scale 39; the water outlet pipe 34 at the bottom of the circulating water tank 2 is connected with the booster circulating pump 31 through a hose 33, and the booster circulating pump 31 is connected with the water inlet pipe 24 at the bottom of the right pipe 21 through a water inlet hose 27.
The upper part of the end head of the right pipe 21 is provided with a solenoid valve A22, the solenoid valve A22 is connected with a water touch sensor 23, and a water inlet pipe 25 of the solenoid valve A22 is provided with a pressure sensor A25 and a voltage stabilizer 26; the pressurizing circulating pump 31 is provided with a pressure sensor B31, the connection part of the pressurizing circulating pump and the water inlet hose 27 is provided with a solenoid valve B29, and the connection part of the pressurizing circulating pump and the hose 33 is provided with a solenoid valve C32; the telescopic shaft motor 7, the voltage stabilizer 26, the electromagnetic valve A22, the electromagnetic valve B29, the electromagnetic valve C32, the water touch sensor 23, the pressure sensor A25, the pressure sensor B30, the booster circulating pump 31 and the electronic scale 39 are all connected with the display PLC controller 28 through control lines; a bracket D44 is arranged on the circulating water tank 2, and a cross rod B9 is arranged at the top of the bracket D44; the movable end 12 of the water collecting chamber is fixed on the end face through a connecting plate 11 by a bolt A10, and a sealing ring A13 is arranged between the movable end 12 of the water collecting chamber and the left end closed pipe 6; the fixed end 15 of the water collecting chamber is connected with the flange plate 16 through a bolt B17, the flange plate 16 is fixed on the right pipe 21 through a bolt C18, and a sealing ring B35 is arranged between the fixed end 15 of the water collecting chamber and the right pipe 21; the bottom of the leakage water amount weighing container 38 is provided with a container drain port 43, and a solenoid valve D42 connected to the display PLC controller 28 is mounted on the container drain port 43.
The sealing ring-free groove type pipe joint sample 14 is connected with the left end sealing pipe 6 and the right pipe 21, a test start key in the display PLC controller 28 is pressed, the telescopic shaft motor 7 works, the motor shaft 8 stretches to enable the water collection chamber moving end 12 to move to the water collection chamber fixed end 15, the telescopic shaft motor 7 stops working, the electronic scale 39 works, the pressurizing circulating pump 31 works, the electromagnetic valve A22, the electromagnetic valve B29, the electromagnetic valve C32 and the electromagnetic valve D42 are in a conducting state, the pressure stabilizer 26 is in a working state, the electromagnetic valve A22 is closed after water reaches the water touch sensor 23, the pressure stabilizer 26 automatically adjusts the pressure in a pipeline to 0.2MPa, the electromagnetic valve D42 is closed after the pressure sensor A25 senses the pressure to be a specified value, meanwhile, the display PLC controller 28 counts time for 2 minutes, and the display PLC controller 28 automatically judges according to the difference between the quality of water in the water collection volume weighing container 38 and the quality of the water collection volume weighing container 38 when the electromagnetic valve D42 is closed, namely the leakage quantity of the sealing ring-free groove type pipe joint sample 14. The pressurizing circulation pump 31 stops working, the electromagnetic valve D42 is conducted, the motor 7 reversely works to enable the movable end 12 of the water collecting chamber to return to the original position, and the state is shown in fig. 4. The device solves the problems of dynamic collection and weighing of the sealing ring-free water leakage of the grooved pipe joint, reduces the operation and human interference factors of experimenters, realizes detection automation, and improves the detection quality and efficiency.
Claims (5)
1. The utility model provides a trench type coupling does not have sealing washer leakage test device for fire control, includes circulation tank (2) of placing on ground (1), its characterized in that: the circulating water tank (2) is sequentially provided with a bracket A (3) with a concave rod A (4) arranged at the top, a bracket B (37) with a cross rod A (19) arranged at the top and a bracket C (36) with a concave rod B (20) arranged at the top from left to right, a left end closed pipe (6) is arranged on the concave rod A (4), a right pipe (21) is arranged on the cross rod A (19) and the concave rod B (20), and a sealing ring-free groove type pipe joint sample (14) is arranged between the left end closed pipe (6) and the right pipe (21); the water collection chamber consisting of a water collection chamber moving end (12) and a water collection chamber fixed end (15) is sleeved on the periphery of a sealing ring-free groove type pipe joint sample (14), the water collection chamber fixed end (15) is fixed on a right pipe (21) through a flange plate (16), the water collection chamber moving end (12) is installed on a left end closed pipe (6) through a connecting plate (11), a telescopic shaft motor (7) is installed on the end head of the left end closed pipe (6) through a fixing clamp (5), and a motor shaft (8) of the telescopic shaft motor (7) is connected with the water collection chamber moving end (12); a bracket (40) positioned below a water collecting chamber water outlet (41) is arranged on the circulating water tank (2), an electronic scale (39) is arranged on the bracket (40), and a container (38) for weighing the leaked water is arranged on the electronic scale (39); a water outlet pipe (34) at the bottom of the circulating water tank (2) is connected with a pressurizing circulating pump (31) through a hose (33), and the pressurizing circulating pump (31) is connected with a water inlet pipe (24) at the bottom of the right pipe (21) through a water inlet hose (27);
An electromagnetic valve A (22) is arranged at the upper part of the end head of the right pipe (21), the electromagnetic valve A (22) is connected with a water touch sensor (23), and a pressure sensor A (25) and a voltage stabilizer (26) are arranged on a water inlet pipe (24) of the right pipe; a pressure sensor B (30) is arranged on the booster circulating pump (31), an electromagnetic valve B (29) is arranged at the joint of the booster circulating pump and the water inlet hose (27), and an electromagnetic valve C (32) is arranged at the joint of the booster circulating pump and the hose (33); the telescopic shaft motor (7), the voltage stabilizer (26), the electromagnetic valve A (22), the electromagnetic valve B (29), the electromagnetic valve C (32), the water touch sensor (23), the pressure sensor A (25), the pressure sensor B (30), the booster circulating pump (31) and the electronic scale (39) are connected with the display PLC controller (28) through control lines.
2. The sealing ring-free leakage test device for a groove type pipe joint for fire protection according to claim 1, wherein: a bracket D (44) is arranged on the circulating water tank (2), and a cross rod B (9) is arranged at the top of the bracket D (44).
3. The sealing ring-free leakage test device for a groove type pipe joint for fire protection according to claim 1, wherein: the movable end (12) of the water collecting chamber is fixed on the end face through a connecting plate (11) by a bolt A (10), and a sealing ring A (13) is arranged between the movable end (12) of the water collecting chamber and the left end closed pipe (6).
4. The sealing ring-free leakage test device for a groove type pipe joint for fire protection according to claim 1, wherein: the water collecting chamber fixed end (15) is connected with the flange plate (16) through the bolt B (17), the flange plate (16) is fixed on the right pipe (21) through the bolt C (18), and the sealing ring B (35) is arranged between the water collecting chamber fixed end (15) and the right pipe (21).
5. The sealing ring-free leakage test device for a groove type pipe joint for fire protection according to claim 1, wherein: a container drain outlet (43) is arranged at the bottom of the container (38) for weighing the leakage water quantity, and a solenoid valve D (42) connected with a display PLC (28) is arranged on the container drain outlet (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810273244.5A CN108362442B (en) | 2018-03-29 | 2018-03-29 | Sealing ring-free leakage test device for groove type pipe joint for fire control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810273244.5A CN108362442B (en) | 2018-03-29 | 2018-03-29 | Sealing ring-free leakage test device for groove type pipe joint for fire control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108362442A CN108362442A (en) | 2018-08-03 |
| CN108362442B true CN108362442B (en) | 2024-04-19 |
Family
ID=63001347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810273244.5A Active CN108362442B (en) | 2018-03-29 | 2018-03-29 | Sealing ring-free leakage test device for groove type pipe joint for fire control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108362442B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5303577A (en) * | 1993-04-09 | 1994-04-19 | Montgomery Joe M | Method and apparatus for detecting leaks in liquid storage tanks |
| DE4307283A1 (en) * | 1993-03-08 | 1994-09-15 | Messmann Josef Fa | Device for testing porous tubes or the like for tightness, and method therefor |
| JPH09229754A (en) * | 1996-02-28 | 1997-09-05 | Ishikawajima Harima Heavy Ind Co Ltd | Measuring instrument for liquid-leakage quantity from pressure vessel |
| JP2005061989A (en) * | 2003-08-12 | 2005-03-10 | Furoomu:Kk | Non-tank type pressure proof test apparatus for high-pressure gas container |
| KR20070014474A (en) * | 2005-07-28 | 2007-02-01 | 삼성전자주식회사 | Mass slit assembly |
| CN202255782U (en) * | 2011-10-19 | 2012-05-30 | 四川省农业机械研究设计院 | Simulated rainfall and rainfall amount detecting device for tent performance test |
| CN103364149A (en) * | 2013-07-29 | 2013-10-23 | 天津六〇九电缆有限公司 | Testing device and testing method for water tightness of cable |
| CN203686461U (en) * | 2013-12-26 | 2014-07-02 | 天津钢管集团股份有限公司 | Capture device for leaked gas during internal pressure test of pipe |
| CN203881499U (en) * | 2014-05-22 | 2014-10-15 | 上海磊诺安防技术股份有限公司 | Leak detection device for firefighting bottle |
| CN106950109A (en) * | 2017-04-01 | 2017-07-14 | 山东省产品质量检验研究院 | A kind of fire-fighting carries torque automatic test equipment with plough groove type pipe joint |
| JP2017125773A (en) * | 2016-01-14 | 2017-07-20 | 株式会社デンソー | Device and method for airtight leakage inspection |
| CN107607266A (en) * | 2017-11-02 | 2018-01-19 | 上海核工程研究设计院有限公司 | A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure |
| CN208206395U (en) * | 2018-03-29 | 2018-12-07 | 山东和富工程检测有限公司 | A kind of fire-fighting plough groove type pipe joint is without sealing ring leak test device |
-
2018
- 2018-03-29 CN CN201810273244.5A patent/CN108362442B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4307283A1 (en) * | 1993-03-08 | 1994-09-15 | Messmann Josef Fa | Device for testing porous tubes or the like for tightness, and method therefor |
| US5303577A (en) * | 1993-04-09 | 1994-04-19 | Montgomery Joe M | Method and apparatus for detecting leaks in liquid storage tanks |
| JPH09229754A (en) * | 1996-02-28 | 1997-09-05 | Ishikawajima Harima Heavy Ind Co Ltd | Measuring instrument for liquid-leakage quantity from pressure vessel |
| JP2005061989A (en) * | 2003-08-12 | 2005-03-10 | Furoomu:Kk | Non-tank type pressure proof test apparatus for high-pressure gas container |
| KR20070014474A (en) * | 2005-07-28 | 2007-02-01 | 삼성전자주식회사 | Mass slit assembly |
| CN202255782U (en) * | 2011-10-19 | 2012-05-30 | 四川省农业机械研究设计院 | Simulated rainfall and rainfall amount detecting device for tent performance test |
| CN103364149A (en) * | 2013-07-29 | 2013-10-23 | 天津六〇九电缆有限公司 | Testing device and testing method for water tightness of cable |
| CN203686461U (en) * | 2013-12-26 | 2014-07-02 | 天津钢管集团股份有限公司 | Capture device for leaked gas during internal pressure test of pipe |
| CN203881499U (en) * | 2014-05-22 | 2014-10-15 | 上海磊诺安防技术股份有限公司 | Leak detection device for firefighting bottle |
| JP2017125773A (en) * | 2016-01-14 | 2017-07-20 | 株式会社デンソー | Device and method for airtight leakage inspection |
| CN106950109A (en) * | 2017-04-01 | 2017-07-14 | 山东省产品质量检验研究院 | A kind of fire-fighting carries torque automatic test equipment with plough groove type pipe joint |
| CN107607266A (en) * | 2017-11-02 | 2018-01-19 | 上海核工程研究设计院有限公司 | A kind of segmented sluice gate seal test device of adjustable experiment hydraulic pressure |
| CN208206395U (en) * | 2018-03-29 | 2018-12-07 | 山东和富工程检测有限公司 | A kind of fire-fighting plough groove type pipe joint is without sealing ring leak test device |
Non-Patent Citations (1)
| Title |
|---|
| 曲线钢顶管接头密封性检测及数值模拟研究;张鹏等;给水排水;第41卷(第10期);第100-105页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108362442A (en) | 2018-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205679367U (en) | A kind of filter assembly air-tightness detection device | |
| CN106950109A (en) | A kind of fire-fighting carries torque automatic test equipment with plough groove type pipe joint | |
| CN205958188U (en) | Pressure testing device | |
| CN208206395U (en) | A kind of fire-fighting plough groove type pipe joint is without sealing ring leak test device | |
| CN206348230U (en) | A kind of pressure test detection means | |
| CN108362442B (en) | Sealing ring-free leakage test device for groove type pipe joint for fire control | |
| CN202645970U (en) | Portable clamping test bench | |
| CN112345042B (en) | Full-automatic multifunctional water meter calibrating device and calibrating method | |
| CN208872474U (en) | A kind of full-automatic pipe air tightness detection machine | |
| CN207074143U (en) | A kind of fire-fighting carries torque automatic test equipment with plough groove type pipe joint | |
| CN106289997A (en) | A kind of pressure test detection device | |
| CN210567572U (en) | Underground pipeline air tightness checking device | |
| CN209280209U (en) | A kind of artificial intelligence detection device preventing automobile oil leak | |
| CN209878689U (en) | Novel transformer oil chromatogram oil extraction device | |
| CN208765950U (en) | A kind of fire-sprinkling system valve working cycle performance automatic test equipment | |
| CN206929096U (en) | A kind of parallel water pump device | |
| CN220063313U (en) | Multi-station high-voltage leak detection platform | |
| CN209892468U (en) | Hydraulic test device for production of auxiliary impeller seal pump | |
| CN205981651U (en) | Water tank advances drainage valve flow and sealing performance detection device | |
| RU222129U1 (en) | Mobile stand for testing hand hydraulic pumps | |
| CN2742402Y (en) | Multiple work position intelligent comprehensive water meter detector | |
| CN219605586U (en) | Tightness detection device for water pump | |
| CN215444360U (en) | Intelligent remote precise control water pump static pressure testing device | |
| CN113310551B (en) | Water meter calibrating equipment | |
| CN210689799U (en) | Petroleum output liquid metering device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |