CN116678560A - Waterproof test device and method for automatically identifying leakage water of shield tunnel sealing gasket - Google Patents
Waterproof test device and method for automatically identifying leakage water of shield tunnel sealing gasket Download PDFInfo
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- CN116678560A CN116678560A CN202310346242.5A CN202310346242A CN116678560A CN 116678560 A CN116678560 A CN 116678560A CN 202310346242 A CN202310346242 A CN 202310346242A CN 116678560 A CN116678560 A CN 116678560A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a waterproof test device and a waterproof test method for automatically identifying leakage water of a shield tunnel sealing gasket, wherein the device comprises the following components: c-shaped work bench; a gasket clamping mechanism for forming a seam of a predetermined shape to fit into a gasket to be tested; a displacement loading mechanism for applying a predetermined load and lateral displacement to the gasket clamping plate mechanism; the hydraulic loading mechanism is used for providing loading hydraulic pressure for the sealing gasket clamping plate mechanism; a leakage water identifying mechanism for automatically identifying the leakage water condition of the sealing gasket; the control mechanism is respectively connected with the displacement loading mechanism, the water leakage identification mechanism and the water pressure loading mechanism. The invention can realize the automatic identification of the sealing gasket leakage water and improve the accuracy of the waterproof test result.
Description
Technical Field
The invention relates to the technical field of shield tunnel joint waterproof test engineering, in particular to a waterproof test device and method for automatically identifying leakage water of a shield tunnel sealing gasket.
Background
The shield tunnel duct piece is transported to the site for assembly after being prefabricated by a factory, a large number of longitudinal seams and circular seams exist among the duct pieces, and meanwhile, a 'straight seam' and a 'T-shaped seam' and other forms are formed among all groups of seams. At present, along with the continuous development of shield technology, the requirement on the waterproof performance of the pipe sheet is also continuously improved, and how to better test and research the waterproof performance of the shield tunnel sealing gasket is more and more concerned.
The existing waterproof performance test of the sealing gasket of the shield tunnel is mainly characterized in that whether the sealing gasket leaks or not is judged, a certain artificial subjective factor exists in a judgment standard in a mode of naked eyes of technicians, and an automatic recognition function is not realized; moreover, the existing testing device has the defects that the existing testing device cannot automatically photograph and store after water leakage is judged, the efficiency is low, and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a waterproof test device and a waterproof test method for automatically identifying leakage water of a sealing pad of a shield tunnel.
According to one aspect of the present invention, there is provided a waterproof test apparatus for automatically identifying water leakage of a shield tunnel gasket, the apparatus comprising:
a C-shaped work table having a C-shaped opening;
the sealing gasket clamping plate mechanism is arranged in the C-shaped opening and is used for forming a joint with a preset shape so as to be filled with a sealing gasket to be tested;
a displacement loading mechanism for applying a predetermined load and lateral displacement to the gasket clamping mechanism;
the hydraulic loading mechanism is used for providing loading hydraulic pressure for the sealing gasket clamping plate mechanism;
the leakage water identifying mechanism is used for automatically identifying the leakage water condition of the sealing gasket;
and the control mechanism is respectively connected with the displacement loading mechanism, the water leakage identification mechanism and the water pressure loading mechanism.
Further, the water leakage identifying mechanism includes:
an industrial camera positioned above the joint, the industrial camera acquiring images of the joint of the gasket clamping plate mechanism at preset time intervals;
the identification module is used for identifying the water leakage condition of the sealing gasket according to the image;
and the storage module is used for storing an image corresponding to the sealing gasket leakage water according to the identification result of the identification module.
Further, the number of the industrial cameras is four, the four industrial cameras are uniformly distributed above the joint, and the camera view angles of the four industrial cameras cover the joint.
Further, when the similarity between the image and the preset image is smaller than a preset threshold value, determining that water leakage occurs at the joint.
Further, the sealing gasket clamping plate mechanism comprises a top cover plate and two symmetrical T-shaped side plates, and the top cover plate covers the upper parts of the T-shaped side plates; the top cover plate and the side surfaces formed by the two T-shaped side plates form a T-shaped seam, and the top cover plate and the top surfaces formed by the two T-shaped side plates form a straight seam; and grooves for accommodating sealing gaskets to be tested are formed in the wall surfaces of the top cover plate and the T-shaped side plates, which are in contact with each other.
Further, the displacement loading mechanism includes:
the top loading mechanism is positioned at the top of the C-shaped opening and is used for applying a preset load to the top cover plate;
and the lateral loading mechanism is fixed on the C-shaped workbench and is used for applying a set staggering amount and a set opening amount to the T-shaped side plate.
Further, the top loading mechanism includes:
4 top oil cylinders are uniformly distributed at the top of the C-shaped opening;
and the backing plate is arranged below the top oil cylinders and is respectively connected with the 4 top oil cylinders.
Further, the side loading mechanism includes:
the acting force of the dislocation adjusting oil cylinder is applied to the T-shaped side plate on one side, so that dislocation displacement of a preset dislocation amount is generated by the two T-shaped side plates;
the acting force of the opening amount adjusting oil cylinder is applied to the side face of the T-shaped side plate, so that the two T-shaped side plates are tightly pressed to meet the set opening amount.
According to another aspect of the present invention, there is provided a waterproof test method for automatically identifying water leakage of a shield tunnel gasket, implemented by using the waterproof test apparatus for automatically identifying water leakage of a shield tunnel gasket, the method comprising:
sticking a sealing gasket to be tested in a joint of a sealing gasket clamping plate mechanism;
applying a predetermined load and lateral displacement to the gasket clamping plate mechanism by a displacement loading mechanism;
the water pressure loading mechanism is used for loading the water pressure to the preset water pressure step by step, and the water leakage identification mechanism is used for automatically identifying the water leakage condition of the sealing gasket in the water pressure loading process, so that the waterproof performance parameter of the sealing gasket is obtained.
Further, the water leakage condition of the sealing gasket in the water pressure loading process is automatically identified through the water leakage identification mechanism, and the method comprises the following steps:
acquiring images of joints of the sealing gasket clamping plate mechanism according to a preset time interval;
and when the similarity between the image and the preset image is smaller than a preset threshold value, determining that water leakage occurs at the joint.
Compared with the prior art, the invention has at least one of the following beneficial effects:
according to the waterproof test device and the waterproof test method, the water leakage identification mechanism is arranged on the segment joint waterproof test platform, so that the automatic identification of the sealing gasket water leakage can be realized, the influence of human subjective factors is effectively reduced, the accuracy of a waterproof test result is improved, and the workload of test staff can be greatly reduced.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic perspective view of a waterproof test apparatus for automatically identifying water leakage of a shield tunnel gasket according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a waterproof test apparatus for automatically identifying leakage water of a shield tunnel gasket according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a waterproof test apparatus for automatically identifying leakage water of a shield tunnel gasket according to an embodiment of the present invention;
in the figure: 1 is a C-shaped working table, 2 is a sealing gasket clamping plate mechanism, 21 is a T-shaped side plate, 22 is a top cover plate, 3 is a top loading mechanism, 31 is a top oil cylinder, 32 is a base plate, 41 is a lateral support, 42 is a lateral pushing rod, 43 is a forward support, 44 is an opening adjustment oil cylinder, 45 is a staggered table adjustment oil cylinder, 5 is a hydraulic loading mechanism, 6 is an industrial camera, 7 is a control mechanism, and 8 is a corner plate.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
The embodiment of the invention provides a waterproof test device for automatically identifying leakage water of a shield tunnel sealing gasket, which comprises a C-shaped working table 1, a sealing gasket clamping plate mechanism 2, a displacement loading mechanism, a water pressure loading mechanism 5, a leakage water identification mechanism and a control mechanism 7, wherein the waterproof test device comprises the following components in percentage by weight: the C-shaped workbench 1 is provided with a C-shaped opening; the sealing gasket clamping plate mechanism 2 is arranged in the C-shaped opening, the sealing gasket clamping plate mechanism 2 is used for forming a joint with a preset shape so as to be filled with a sealing gasket to be tested, and specifically, grooves for pasting the sealing gasket to be tested are formed on two sides of the joint; the displacement loading mechanism is used for applying preset load and lateral displacement to the sealing gasket clamping plate mechanism 2; the hydraulic loading mechanism 5 is used for providing loading hydraulic pressure for the sealing gasket clamping plate mechanism 2; the leakage water identifying mechanism is used for automatically identifying the leakage water condition of the sealing gasket; the control mechanism 7 is respectively connected with the displacement loading mechanism, the water leakage identifying mechanism and the water pressure loading mechanism 5.
According to the embodiment, the water leakage identification mechanism is arranged on the segment joint waterproof test platform, so that in the shield tunnel joint waterproof test, the automatic identification and judgment of the water leakage condition of the shield tunnel segment joint sealing gasket can be realized, the influence of human subjective factors is effectively reduced, the accuracy of a waterproof test result is improved, and the workload of test staff can be greatly reduced.
In some embodiments, the water leakage identification means comprises an industrial camera 6 located above the joint, preferably comprising four industrial cameras 6 evenly distributed above the joint, the camera view of the four industrial cameras 6 covering the joint, and the images of the joint of the gasket clamping means 2 are acquired by the industrial cameras 6 at preset time intervals, for example, the industrial cameras 6 automatically take pictures every certain time interval, for example, 10s during the test, to obtain a plurality of images of the joint. The water leakage identification mechanism also comprises a storage module and an identification module, wherein the storage module is used for storing images of joints; the recognition module recognizes the water leakage condition of the sealing gasket according to the image, specifically, an image obtained after the sealing gasket is installed at the joint is taken as a preset image, the image under the condition that the water leakage occurs at the joint can be compared with the preset image, and when the similarity is smaller than a preset threshold value, the similarity is lower, so that the water leakage at the joint can be judged. If the water leakage at the joint is identified, the test is terminated, and if the water leakage is not identified, the test is continued.
In the above embodiment, the industrial camera 6 acquires the images of the joint, such as the straight joint and the T-joint, of the gasket clamping plate mechanism 2 according to the preset time interval, the storage module automatically stores the images of the joint, and the identification module identifies the water leakage condition of the gasket according to the images, so that more reliable test data can be obtained, and the test results are convenient to sort.
According to the waterproof test device, automatic photographing and storage can be realized when water leakage occurs in the sealing gasket, so that more reliable test data can be obtained, and test result arrangement is convenient.
In some embodiments, the C-shaped work bench 1 is welded from steel plates, and the lower middle part of the C-shaped opening of the C-shaped work bench 1 provides a gasket test operation platform, and the upper middle part provides a counter force for loading the top cylinder 31. The gasket clamping plate mechanism 2 comprises a top cover plate 22 and two symmetrical T-shaped side plates 21, and the top cover plate 22 is covered above the T-shaped side plates 21; the side surface formed by the top cover plate 22 and the two T-shaped side plates 21 forms a T-shaped seam, and the top surface formed by the top cover plate 22 and the two T-shaped side plates 21 forms a straight seam; the top cover plate 22 and the T-shaped side plate 21 are provided with grooves for accommodating gaskets to be tested on the mutually contacted wall surfaces. The displacement loading mechanism includes a top loading mechanism 3 and a side loading mechanism, the top loading mechanism 3 being located at the top of the C-shaped opening for applying a predetermined load to the top cover plate 22, the side loading mechanism being fixed to the C-shaped work table 1 for applying a set displacement (a stagger amount and a splay amount) to the T-shaped side plate 21.
In some embodiments, the top loading mechanism 3 includes top cylinders 31 and backing plates 32, the number of top cylinders 31 is 4, and the 4 top cylinders 31 are uniformly distributed at the top of the C-shaped opening; the top cylinder 31 is fixed on the top of the C-shaped opening in a welding mode, the backing plates 32 are arranged below the top cylinder 31 and are respectively connected with the 4 top cylinders 31, and the backing plates 32 are used for applying wedge-shaped deformation to the top cover plate 22. The 4 industrial cameras 6 are respectively fixed at the middle positions of the 4 sides of the pad plate 32 to realize full coverage of the seam from the view angle of the cameras. The top cover plate 22 and the T-shaped side plate 21 are made of steel, grooves with corresponding depth and width are engraved in the inner part so as to facilitate the adhesion of the sealing gasket, and meanwhile, water inlet holes and air outlet holes are reserved in the top cover plate 22. In order to further enhance the adaptability of the test device, one or two grooves and different groove spaces can be formed in the top cover plate 22 and the T-shaped side plate 21 so as to simulate the situation that the actual duct piece is provided with a single sealing gasket and a plurality of sealing gaskets, and the different groove spaces can simulate the setting space that the actual duct piece is provided with a plurality of sealing gaskets.
In some embodiments, the lateral displacement cyclic loading mechanism comprises an adjustment stagger amount oil cylinder 45 and an adjustment opening amount oil cylinder 44, wherein the adjustment stagger amount oil cylinder 45 is arranged at one end of the T-shaped side plate 21 in the length direction, and the acting force of the adjustment stagger amount oil cylinder 45 is applied to the T-shaped side plate 21 at one side, so that the two T-shaped side plates 21 generate stagger displacement with preset stagger amounts; the opening adjustment cylinder 44 is arranged at one end of the T-shaped side plate 21 close to the side wall of the C-shaped opening in the width direction, the opening adjustment cylinder 44 is perpendicular to the adjustment stagger cylinder 45, and the acting force of the opening adjustment cylinder 44 is applied to the side surface of the T-shaped side plate 21, so that the two T-shaped side plates 21 are tightly pressed to meet the set opening amount.
Further, the lateral displacement cyclic loading mechanism further comprises a forward support 43 and a lateral support 41, wherein: the forward support 43 is arranged on the outer side of the T-shaped side plate 21 far away from the side wall of the C-shaped opening; the lateral support 41 is arranged between the adjustment stagger amount cylinder 45 and the T-shaped side plate 21.
In other embodiments, the gasket clamping mechanism or the seam may be of other structures, and the displacement loading mechanism may be of other structures or apply other kinds of loads according to actual needs, which is not particularly limited in this embodiment of the present invention.
In some embodiments, the top cover plate 22 is provided with a water inlet hole, and the hydraulic loading mechanism 5 comprises a hydraulic pipeline and a hydraulic oil cylinder, wherein one end of the hydraulic pipeline is communicated with the water inlet hole; the hydraulic oil cylinder is connected with the other end of the hydraulic pipeline and used for providing loading hydraulic pressure, and the hydraulic oil cylinder is connected with the control mechanism 7 and can automatically load the hydraulic pressure so as to be convenient for test operation.
In some embodiments, the device further comprises a sliding rail (not shown in the figure) and a lateral pushing rod 42, the sliding rail is arranged at the bottom of the C-shaped opening, the sealing gasket clamping plate mechanism 2 is arranged on the sliding rail, and the sealing gasket clamping plate mechanism 2 moves through the sliding rail, so that the operation is convenient; one end of the lateral pushing rod 42 is connected with the gasket clamping mechanism 2, and is used for pushing the gasket clamping mechanism 2 to move below the top loading mechanism 3 along the sliding rail. After the top cover plate 22 and the two T-shaped side plates 21 are assembled to form the gasket clamping mechanism 2, the gasket clamping mechanism 2 can be pushed into the C-shaped work table 1 along the slide rail by pushing the rod 42 sideways.
In some embodiments, a plurality of gussets 8 for reinforcement are provided at the lower portion of the C-shaped table 1 to maintain stability of the C-shaped table 1.
In the above embodiment, various test parameters can be set through the control mechanism 7, so that automatic operation is realized, errors caused by manual operation are avoided, and more reliable test data are obtained.
Another embodiment of the present invention provides a waterproof test method for automatically identifying water leakage of a shield tunnel gasket, implemented by using the waterproof test device for automatically identifying water leakage of a shield tunnel gasket, with continued reference to fig. 1-3, the method includes:
s1, sticking a sealing gasket to be tested in a joint of a sealing gasket clamping plate mechanism 2;
s2, applying preset load and lateral displacement to the sealing gasket clamping plate mechanism 2 through the displacement loading mechanism;
and S3, gradually loading the water to a preset water pressure through the water pressure loading mechanism 5, and automatically identifying the water leakage condition of the sealing gasket in the water pressure loading process through the water leakage identification mechanism to obtain the waterproof performance parameters of the sealing gasket.
In some embodiments, the method for automatically identifying the water leakage condition of the sealing gasket in the water pressure loading process through the water leakage identification mechanism comprises the following steps: acquiring images of the joint of the sealing gasket clamping plate mechanism 2 according to preset time intervals (such as 10 s) through an industrial camera; the identification module judges whether water leakage occurs according to the similarity between the image and a preset image, and determines that water leakage occurs at the joint when the similarity between the image and the preset image is smaller than a preset threshold value.
In one embodiment, with continued reference to FIGS. 1-3, a water proof test method for automatically identifying water leakage of a shield tunnel gasket includes the steps of:
s1, adhering a tested sealing gasket into grooves of two T-shaped side plates 21 and a top cover plate 22, and completing the adhering work of the test on the rubber sealing gasket;
s2, adjusting two lateral control cylinders, respectively applying the opening amount and the staggering amount to the two T-shaped side plates 21, checking the opening amount and the staggering amount around by adopting a vernier caliper, and completing the adjustment work of the opening amount and the staggering amount after meeting the requirements; in the single test process, the opening amount and the staggering amount are kept unchanged;
s3, the top oil cylinder 31 descends to apply a preset load;
and S4, connecting a pipeline of the water pressure loading mechanism 5 with a water inlet valve, operating electrically, starting water pressure to load step by step, acquiring images of joints by the precision industrial camera 6 according to a preset time interval, storing the images in real time by a storage module, and automatically identifying the water leakage condition of the sealing gasket by an identification module according to the similarity between the images and the preset images to obtain the waterproof performance parameters of the sealing gasket.
According to the waterproof test device and the waterproof test method provided by the embodiment of the invention, the water leakage identification mechanism is arranged on the segment joint waterproof test platform, so that the automatic identification of the water leakage of the sealing gasket can be realized, the influence of artificial subjective factors is effectively reduced, the accuracy of a waterproof test result is improved, and the workload of test staff can be greatly reduced. By storing the image when the sealing gasket leaks water, more reliable test data can be obtained, and the test results are convenient to sort.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention. The above-described preferred features may be used in any combination without collision.
Claims (10)
1. Waterproof test device of automatic discernment shield tunnel sealing pad leakage water, characterized in that includes:
a C-shaped work table having a C-shaped opening;
the sealing gasket clamping plate mechanism is arranged in the C-shaped opening and is used for forming a joint with a preset shape so as to be filled with a sealing gasket to be tested;
a displacement loading mechanism for applying a predetermined load and lateral displacement to the gasket clamping mechanism;
the hydraulic loading mechanism is used for providing loading hydraulic pressure for the sealing gasket clamping plate mechanism;
the leakage water identifying mechanism is used for automatically identifying the leakage water condition of the sealing gasket;
and the control mechanism is respectively connected with the displacement loading mechanism, the water leakage identification mechanism and the water pressure loading mechanism.
2. The waterproof test device for automatically identifying leakage water of a shield tunnel gasket according to claim 1, wherein the leakage water identification mechanism comprises:
an industrial camera positioned above the joint, the industrial camera acquiring images of the joint of the gasket clamping plate mechanism at preset time intervals;
the storage module is used for storing the image;
and the identification module is used for identifying the water leakage condition of the sealing gasket according to the image.
3. The waterproof test device for automatically identifying water leakage of a shield tunnel sealing gasket according to claim 2, wherein the number of the industrial cameras is four, the four industrial cameras are uniformly distributed above the joint, and camera view angles of the four industrial cameras cover the joint.
4. The waterproof test device for automatically identifying leakage water of a shield tunnel sealing gasket according to claim 2, wherein the occurrence of the leakage water at the joint is determined when the similarity between the image and the preset image is smaller than a preset threshold value.
5. The waterproof test device for automatically identifying shield tunnel sealing gasket leakage water according to claim 1, wherein the sealing gasket clamping plate mechanism comprises a top cover plate and two symmetrical T-shaped side plates, and the top cover plate covers the upper parts of the T-shaped side plates; the top cover plate and the side surfaces formed by the two T-shaped side plates form a T-shaped seam, and the top cover plate and the top surfaces formed by the two T-shaped side plates form a straight seam; and grooves for accommodating sealing gaskets to be tested are formed in the wall surfaces of the top cover plate and the T-shaped side plates, which are in contact with each other.
6. The waterproof test device for automatically identifying leakage water of a shield tunnel gasket according to claim 5, wherein the displacement loading mechanism comprises:
the top loading mechanism is positioned at the top of the C-shaped opening and is used for applying a preset load to the top cover plate;
and the lateral loading mechanism is fixed on the C-shaped workbench and is used for applying a set staggering amount and a set opening amount to the T-shaped side plate.
7. The waterproof test apparatus for automatically identifying shield tunnel gasket leakage water of claim 6, wherein the top loading mechanism comprises:
4 top oil cylinders are uniformly distributed at the top of the C-shaped opening;
and the backing plate is arranged below the top oil cylinders and is respectively connected with the 4 top oil cylinders.
8. The waterproof test device for automatically identifying shield tunnel gasket leakage water according to claim 6, wherein the side loading mechanism comprises:
the acting force of the dislocation adjusting oil cylinder is applied to the T-shaped side plate on one side, so that dislocation displacement of a preset dislocation amount is generated by the two T-shaped side plates;
the acting force of the opening amount adjusting oil cylinder is applied to the side face of the T-shaped side plate, so that the two T-shaped side plates are tightly pressed to meet the set opening amount.
9. A waterproof test method for automatically identifying shield tunnel sealing gasket leakage water, realized by the waterproof test device for automatically identifying shield tunnel sealing gasket leakage water according to any one of claims 1-8, comprising the following steps:
sticking a sealing gasket to be tested in a joint of a sealing gasket clamping plate mechanism;
applying a predetermined load and lateral displacement to the gasket clamping plate mechanism by a displacement loading mechanism;
the water pressure loading mechanism is used for loading the water pressure to the preset water pressure step by step, and the water leakage identification mechanism is used for automatically identifying the water leakage condition of the sealing gasket in the water pressure loading process, so that the waterproof performance parameter of the sealing gasket is obtained.
10. The waterproof test method for automatically identifying water leakage of a sealing gasket of a shield tunnel according to claim 9, wherein the water leakage condition of the sealing gasket in the water pressure loading process is automatically identified by a water leakage identification mechanism, comprising:
acquiring images of joints of the sealing gasket clamping plate mechanism according to a preset time interval;
and when the similarity between the image and the preset image is smaller than a preset threshold value, determining that water leakage occurs at the joint.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346242.5A CN116678560A (en) | 2023-04-03 | 2023-04-03 | Waterproof test device and method for automatically identifying leakage water of shield tunnel sealing gasket |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310346242.5A CN116678560A (en) | 2023-04-03 | 2023-04-03 | Waterproof test device and method for automatically identifying leakage water of shield tunnel sealing gasket |
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| CN202310346242.5A Pending CN116678560A (en) | 2023-04-03 | 2023-04-03 | Waterproof test device and method for automatically identifying leakage water of shield tunnel sealing gasket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117890032A (en) * | 2024-02-19 | 2024-04-16 | 北京城建设计发展集团股份有限公司 | Automatic water pressure testing system for visual sealing gasket and fitting testing method thereof |
| CN118424591A (en) * | 2024-02-19 | 2024-08-02 | 北京城建设计发展集团股份有限公司 | Sealing gasket visual test device and leakage identification method |
-
2023
- 2023-04-03 CN CN202310346242.5A patent/CN116678560A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117890032A (en) * | 2024-02-19 | 2024-04-16 | 北京城建设计发展集团股份有限公司 | Automatic water pressure testing system for visual sealing gasket and fitting testing method thereof |
| CN118424591A (en) * | 2024-02-19 | 2024-08-02 | 北京城建设计发展集团股份有限公司 | Sealing gasket visual test device and leakage identification method |
| CN118424591B (en) * | 2024-02-19 | 2024-12-10 | 北京城建设计发展集团股份有限公司 | Sealing gasket visual test device and leakage identification method |
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