CN113310640A - Device for sealing pressure test and leakage test at pipeline joint - Google Patents
Device for sealing pressure test and leakage test at pipeline joint Download PDFInfo
- Publication number
- CN113310640A CN113310640A CN202110698304.XA CN202110698304A CN113310640A CN 113310640 A CN113310640 A CN 113310640A CN 202110698304 A CN202110698304 A CN 202110698304A CN 113310640 A CN113310640 A CN 113310640A
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- Prior art keywords
- pipe
- sealing
- water
- connecting pipe
- connecting piece
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—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 pipe joints or seals
- G01M3/2869—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 pipe joints or seals for seals not incorporated in a pipe joint
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The invention relates to a device for sealing pressure test and leakage test at a pipeline joint, which comprises a water inlet device, a connecting assembly and a sealing assembly, wherein the connecting assembly is arranged on the water inlet device; can fill in the sealing washer in the gap of pipe connection department, make the sealing washer keep apart out a inclosed cavity with pipe connection department, later through first water guide tubule with water injection inclosed cavity in, and the inclosed cavity of continuous with water injection, observe first manometer simultaneously, stop the water injection after water pressure reaches the predetermined value, and observe numerical value on the first manometer, when numerical value does not appear obvious change, then prove that the phenomenon of leaking appears in pipe connection department, can go on rechecking and eliminate the leak source to pipe connection department when pressure numerical value reduces, from this can be better deal with not unidimensional cast, and easy operation and work load are little, and is with low costs, convenient transportation.
Description
Technical Field
The invention relates to the technical field of pipelines, in particular to a device for sealing pressure test and leakage test at a pipeline joint.
Background
Municipal drainage pipes refer to rainwater and sewage pipelines under municipal roads, namely commonly called 'sewer pipelines', and are generally called municipal drainage pipes in engineering.
Municipal drainage pipe usually lays in the below ground, in case the phenomenon of the water leakage appears in the pipeline junction, needs to dig ground and maintain or change afterwards, and is just hard consuming time, consequently carries out the pressure testing leak test to the pipeline in the piping erection process and is especially important.
At present, a pressure test leakage test tool for large and medium municipal drainage pipelines in the market is mainly an annular pressing device arranged on a moving trolley; however, the device has large overall mass and is inconvenient to move manually, and tools with different sizes need to be designed corresponding to pipes with different sizes, so that the cost is high; the larger the pipeline, the more the manual operation workload.
Therefore, a device for pressure test leakage test, which has a simple structure, can better deal with pipe types with different sizes, is easy to operate and has small workload, is urgently needed.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a device for sealing, pressure testing and leakage testing at a pipeline joint, which can conveniently cope with pipe types with different sizes, is simple to operate and small in workload, and reduces labor cost and equipment cost.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a device for sealing pressure test and leakage test at a pipeline joint comprises a water inlet device, a connecting assembly and a sealing assembly, wherein the water inlet device is connected with the sealing assembly through the connecting assembly;
the connecting assembly comprises a first connecting pipe, a first valve, a second connecting pipe, a first pressure gauge and a bent pipe, wherein one end of the first connecting pipe is connected with the water inlet device, the other end of the first connecting pipe is connected with one end of the second connecting pipe through the first valve, the first pressure gauge is arranged on the second connecting pipe, the bent pipe is arranged at the other end of the second connecting pipe, and one end of a first water guide thin pipe is connected with the bent pipe;
the seal assembly comprises a seal ring and a first connecting piece, the first connecting piece is arranged on the seal ring in a penetrating mode, one side of the first connecting piece is arranged on the inner side of the seal ring, and the other side of the first connecting piece is detachably connected with the other end of the first water guide thin pipe.
Further, coupling assembling still includes the hose, the one end of hose with the connection can be dismantled to the other end of second connecting pipe, the other end of hose with the return bend is connected.
Further, water installations includes water tank, hand water pump and third connecting pipe, hand water pump with the water tank is connected, the one end of third connecting pipe with hand water pump is connected, the other end of third connecting pipe with the connection can be dismantled to the one end of first connecting pipe.
Furthermore, the device also comprises a second pressure gauge, and the third connecting pipe is provided with the second pressure gauge.
The furtherly still includes the pressure release subassembly, the pressure release subassembly comprises drain pipe, second valve and second water guide tubule, the one end of drain pipe is connected with the second valve, the other end of drain pipe with the other end of second water guide tubule is connected, wear to be equipped with the second connecting piece on the seal ring, the second water guide tubule with the connection can be dismantled to the second connecting piece.
Further, first connecting piece with second connecting piece structure is the same, first connecting piece includes the hard tube and dismantles the pipe, the one end of hard tube is worn to locate inside the sealing washer, the other end of hard tube with dismantle the internal surface rotatable coupling of pipe one end, the internal surface of dismantling the pipe other end is provided with the internal thread, the other end of first water guide tubule with the other end of second water guide tubule all is provided with the external screw thread.
Furthermore, the first connecting piece further comprises a rubber ring, and the other end of the hard tube is provided with the rubber ring.
Further, still include the inflatable component, the sealing washer is hollow structure, the inflatable component through the air cock with the sealing washer is connected.
Further, the inflation assembly comprises an air pump and an air duct, and the air pump is connected with the air faucet through the air duct.
Further, still include the battery, the battery is connected with the air pump electricity.
(III) advantageous effects
The invention has the beneficial effects that: when pressure test and leakage test are required to be carried out on the pipeline joint in the actual use process, the sealing ring can be plugged into a gap of the pipeline joint, the pipeline joint is isolated into a closed cavity by the sealing ring, the first water guide tubule is connected with the first connecting piece, water is then guided into the first connecting pipe through the water inlet device, then the water flows into the bent pipe through the second connecting pipe, then the water is injected into the closed cavity through the first water guide tubule and is continuously injected into the closed cavity, the first pressure gauge is observed at the same time, the water injection is stopped when the water pressure reaches a preset value, the value on the first pressure gauge is observed, when the value is not obviously changed, the phenomenon of water leakage occurs at the pipeline joint is proved, when the pressure value is reduced, the pipeline joint can be rechecked and the leakage point is eliminated, and therefore pipe types with different sizes can be better dealt with, and the operation is simple, the workload is small, the cost is low, and the transportation is convenient.
Drawings
FIG. 1 is a schematic overall structure diagram of a device for sealing pressure test and leakage test at a pipeline joint according to an embodiment of the invention;
FIG. 2 is a side view of the overall structure of the device for sealing pressure test and leakage test at the pipeline joint according to the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a sealing ring in the device for sealing, pressure testing and leakage testing at a pipeline joint according to the embodiment of the invention;
FIG. 4 is a schematic overall structure diagram of the device for sealing pressure test and leakage test at the pipeline joint according to the embodiment of the invention;
FIG. 5 is a schematic structural diagram of a first connecting piece in the device for sealing pressure test and leakage test at a pipeline joint according to the embodiment of the invention;
FIG. 6 is a schematic view of the sealing ring in the device for sealing pressure test and leakage test at the pipeline joint according to the embodiment of the invention;
[ description of reference ]
1-bent pipe, 2-hose, 3-first pressure gauge, 4-third connecting pipe, 5-second pressure gauge, 6-hand water pump, 7-water tank, 8-first connecting pipe, 9-first valve, 10-second connecting pipe, 11-first water guide tubule, 12-sealing ring, 13-first connecting piece, 14-second connecting piece, 15-water discharge pipe, 16-second valve, 17-second water guide tubule, 18-pipeline, 1301-hard pipe, 1302-detachable pipe and 1303-rubber ring.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 6, the device for sealing pressure test and leakage test at a pipeline joint of the present invention includes a water inlet device, a connecting assembly and a sealing assembly, wherein the water inlet device is connected with the sealing assembly through the connecting assembly;
the connecting assembly comprises a first connecting pipe 8, a first valve 9, a second connecting pipe 10, a first pressure gauge 3 and a bent pipe 1, wherein one end of the first connecting pipe 8 is connected with the water inlet device, the other end of the first connecting pipe 8 is connected with one end of the second connecting pipe 10 through the first valve 9, the first pressure gauge 3 is arranged on the second connecting pipe 10, the bent pipe 1 is arranged at the other end of the second connecting pipe 10, and one end of a first water guide thin pipe 11 is connected to the bent pipe 1;
seal assembly includes sealing washer 12 and first connecting piece 13, wear to be equipped with on the sealing washer 12 first connecting piece 13, one side of first connecting piece 13 set up in the inboard of sealing washer 12, the opposite side of first connecting piece 13 with the connection can be dismantled to the other end of first water guide tubule 11.
The working principle of the invention is as follows: in the actual use process, when the joint of the pipeline 18 needs to be tested for pressure and leakage, the sealing ring 12 can be plugged into the gap at the joint of the pipeline 18, so that the sealing ring 12 isolates the joint of the pipeline 18 into a closed cavity, the first water guide tubule 11 is connected with the first connecting piece 13, then water is guided into the first connecting pipe 8 through the water inlet device, then the water flows into the bent pipe 1 through the second connecting pipe 10, then the water is injected into the closed cavity through the first water guide tubule 11 and is continuously injected into the closed cavity, at the same time, the first pressure gauge 3 is observed, the water injection is stopped when the water pressure reaches a preset value, the numerical value on the first pressure gauge 3 is observed, when the numerical value is not obviously changed, it is thus possible to verify the presence of leaks at the pipe 18 junction and to re-check the pipe 18 junction and eliminate the leak when the pressure value decreases.
Further, coupling assembling still includes hose 2, the one end of hose 2 with the connection can be dismantled to the other end of second connecting pipe 10, the other end of hose 2 with return bend 1 is connected.
Known from the above-mentioned description, through coupling assembling still includes hose 2, hose 2 one end with the connection can be dismantled to the other end of second connecting pipe 10, hose 2 the other end with return bend 1 is connected, is favorable to through the direction of the better control return bend 1 of hose 2, is favorable to first water guide tubule 11 to be connected with first connecting piece 13.
Further, water installations includes water tank 7, hand water pump 6 and third connecting pipe 4, hand water pump 6 with water tank 7 is connected, the one end of third connecting pipe 4 with hand water pump 6 is connected, the other end of third connecting pipe 4 with the connection can be dismantled to the one end of first connecting pipe 8.
From the above description, through water installations includes water tank 7, hand water pump 6 and third connecting pipe 4, hand water pump 6 with water tank 7 is connected, the one end of third connecting pipe 4 with hand water pump 6 is connected, the other end of third connecting pipe 4 with the connection can be dismantled to the one end of first connecting pipe 8, is favorable to hand water pump 6 to take up the water in the water tank 7 through hand water pump 6 to in leading-in third connecting pipe 4.
Further, the pressure measuring device further comprises a second pressure gauge 5, and the third connecting pipe 4 is provided with the second pressure gauge 5.
It can be known from the above description that, through be provided with on the third connecting pipe 4 the second manometer 5 is favorable to looking over the water pressure state in the third connecting pipe 4 through second manometer 5 to observe the situation of drawing water.
Further, still include the pressure release subassembly, the pressure release subassembly comprises drain pipe 15, second valve 16 and second water guide tubule 17, the one end of drain pipe 15 is connected with second valve 16, the other end of drain pipe 15 with the other end of second water guide tubule 17 is connected, wear to be equipped with second connecting piece 14 on the sealing washer 12, second water guide tubule 17 with the connection can be dismantled to second connecting piece 14.
Known from the above-mentioned description, through the pressure release subassembly comprises drain pipe 15, second valve 16 and second water guide tubule 17, the one end of drain pipe 15 is connected with second valve 16, the other end of drain pipe 15 with the other end of second water guide tubule 17 is connected, wear to be equipped with second connecting piece 14 on the sealing washer 12, second water guide tubule 17 with second connecting piece 14 can dismantle the connection, is favorable to opening second valve 16 after the condition of leaking of the pipeline 18 junction of having examined, makes the water in the airtight cavity pass through in the leading-in drain pipe 15 of second water guide tubule 17 to discharge through drain pipe 15.
Further, first connecting piece 13 with second connecting piece 14 structure is the same, first connecting piece 13 includes hard tube 1301 and dismantles pipe 1302, the one end of hard tube 1301 is worn to locate inside sealing washer 12, the other end of hard tube 1301 with dismantle the internal surface rotatable coupling of pipe 1302 one end, the internal surface of the dismantlement pipe 1302 other end is provided with the internal thread, the other end of first water leading tubule 11 with the other end of second water leading tubule 17 all is provided with the external screw thread.
Known from the above-mentioned description, through first connecting piece 13 with second connecting piece 14 structure is the same, first connecting piece 13 includes hard tube 1301 and dismantles pipe 1302, the one end of hard tube 1301 is worn to locate inside sealing washer 12, the other end of hard tube 1301 with dismantle the internal surface rotatable coupling of pipe 1302 one end, the internal surface of dismantling the pipe 1302 other end is provided with the internal thread, the other end of first water guide tubule 11 with the other end of second water guide tubule 17 all is provided with the external screw thread, is favorable to inserting the other end with first water guide tubule 11 and dismantles back in the pipe 1302, rotates and dismantles pipe 1302 and makes the internal thread of dismantling on the pipe 1302 and the external screw thread on the first water guide tubule 11 cooperate to the other end that drives first water guide tubule 11 is close to hard tube 1301, and switches on hard tube 1301 and first water guide tubule 11 mutually.
Further, the first connecting piece 13 further comprises a rubber ring 1303, and the rubber ring 1303 is arranged at the other end of the hard tube 1301.
It can be known from the above description that, through first connecting piece 13 still includes rubber circle 1303, the other end of hard tube 1301 is provided with rubber circle 1303 is favorable to avoiding hard tube 1301 being connected the back with first water guide tubule 11, and the phenomenon that the junction appears leaking.
Further, still include the inflatable component, sealing washer 12 is hollow structure, the inflatable component through the air cock with sealing washer 12 is connected.
As can be seen from the above description, since the sealing ring 12 is a hollow structure, the inflation assembly is connected to the sealing ring 12 through an air nozzle, which is beneficial to inflating the sealing ring 12 after the sealing ring 12 is plugged into the gap at the joint of the pipeline 18, so that the sealing ring 12 can better seal the gap at the joint of the pipeline 18 after being expanded.
Further, the inflation assembly comprises an air pump and an air duct, and the air pump is connected with the air faucet through the air duct.
As can be seen from the above description, the air pump is connected with the air faucet through the air duct, which is beneficial for guiding air into the air faucet through the air duct.
Further, still include the battery, the battery is connected with the air pump electricity.
As can be seen from the above description, the off-line use of the air pump is facilitated by the electrical connection of the battery to the air pump.
Example one
Referring to fig. 1 to 6, a device for sealing pressure test and leakage test at a pipeline joint comprises a water inlet device, a connecting assembly and a sealing assembly, wherein the water inlet device is connected with the sealing assembly through the connecting assembly;
the connecting assembly comprises a first connecting pipe 8, a first valve 9, a second connecting pipe 10, a first pressure gauge 3 and a bent pipe 1, wherein one end of the first connecting pipe 8 is connected with the water inlet device, the other end of the first connecting pipe 8 is connected with one end of the second connecting pipe 10 through the first valve 9, the first pressure gauge 3 is arranged on the second connecting pipe 10, the bent pipe 1 is arranged at the other end of the second connecting pipe 10, and one end of a first water guide thin pipe 11 is connected to the bent pipe 1;
the first connecting pipe 8, the second connecting pipe 10, the third connecting pipe 4 and the elbow pipe 1 are made of stainless steel, so that the hardness is high and the elbow pipe is not easy to rust;
the second connecting pipe 10 is connected with the first pressure gauge 3 through a coiled pipe;
the sealing assembly comprises a sealing ring 12 and a first connecting piece 13, the first connecting piece 13 penetrates through the sealing ring 12, one side of the first connecting piece 13 is arranged on the inner side of the sealing ring 12, and the other side of the first connecting piece 13 is detachably connected with the other end of the first water guide thin pipe 11;
the sealing ring 12 is made of rubber;
the connecting assembly further comprises a hose 2, one end of the hose 2 is detachably connected with the other end of the second connecting pipe 10 and is in threaded connection, and the other end of the hose 2 is connected with the elbow pipe 1 and is in threaded connection;
the hose 2 is made of rubber, so that the hose is good in toughness and corrosion-resistant;
the water inlet device comprises a water tank 7, a hand-operated water pump 6 and a third connecting pipe 4, the hand-operated water pump 6 is connected with the water tank 7, one end of the third connecting pipe 4 is connected with the hand-operated water pump 6 and is in threaded connection, and the other end of the third connecting pipe 4 is detachably connected with one end of the first connecting pipe 8 and is in threaded connection;
a water inlet is formed in the water tank 7;
the bottom of the water tank 7 is rotatably connected with a roller, so that the whole device can move conveniently;
the third connecting pipe 4 is provided with a second pressure gauge 5, and the second pressure gauge 5 is arranged on the third connecting pipe 4;
the pressure relief assembly is composed of a drain pipe 15, a second valve 16 and a second water guide thin pipe 17, one end of the drain pipe 15 is connected with the second valve 16, the other end of the drain pipe 15 is connected with the other end of the second water guide thin pipe 17, a second connecting piece 14 penetrates through the sealing ring 12, and the second water guide thin pipe 17 is detachably connected with the second connecting piece 14;
the first connecting piece 13 and the second connecting piece 14 have the same structure, the first connecting piece 13 comprises a hard tube 1301 and a detachable tube 1302, one end of the hard tube 1301 is arranged in the sealing ring 12 in a penetrating manner, the other end of the hard tube 1301 is rotatably connected with the inner surface of one end of the detachable tube 1302, the inner surface of the other end of the detachable tube 1302 is provided with internal threads, and the other end of the first water guiding tubule 11 and the other end of the second water guiding tubule 17 are both provided with external threads;
the first connecting piece 13 and the second connecting piece 14 further comprise rubber rings 1303, and the rubber rings 1303 are arranged at the other ends of the hard pipes 1301;
the sealing ring is characterized by further comprising an inflating assembly, wherein the sealing ring 12 is of a hollow structure, and the inflating assembly is connected with the sealing ring 12 through an air tap;
the air inflation assembly comprises an air pump and an air guide pipe, and the air pump is connected with the air tap through the air guide pipe;
the air pump is characterized by further comprising a storage battery, and the storage battery is electrically connected with the air pump.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a device that is used for sealed pressure testing leakage testing of pipeline junction which characterized in that: the water inlet device is connected with the sealing assembly through the connecting assembly;
the connecting assembly comprises a first connecting pipe, a first valve, a second connecting pipe, a first pressure gauge and a bent pipe, wherein one end of the first connecting pipe is connected with the water inlet device, the other end of the first connecting pipe is connected with one end of the second connecting pipe through the first valve, the first pressure gauge is arranged on the second connecting pipe, the bent pipe is arranged at the other end of the second connecting pipe, and one end of a first water guide thin pipe is connected with the bent pipe;
the seal assembly comprises a seal ring and a first connecting piece, the first connecting piece is arranged on the seal ring in a penetrating mode, one side of the first connecting piece is arranged on the inner side of the seal ring, and the other side of the first connecting piece is detachably connected with the other end of the first water guide thin pipe.
2. The device for sealing, pressure testing and leakage testing of the pipeline joint according to claim 1, characterized in that: coupling assembling still includes the hose, the one end of hose with the connection can be dismantled to the other end of second connecting pipe, the other end of hose with the return bend is connected.
3. The device for sealing, pressure testing and leakage testing of the pipeline joint according to claim 1, characterized in that: the water inlet device comprises a water tank, a hand-operated water pump and a third connecting pipe, the hand-operated water pump is connected with the water tank, one end of the third connecting pipe is connected with the hand-operated water pump, and the other end of the third connecting pipe is detachably connected with one end of the first connecting pipe.
4. The device for sealing, pressure testing and leakage testing of the pipeline joint as claimed in claim 3, wherein: the third connecting pipe is provided with a second pressure gauge.
5. The device for sealing, pressure testing and leakage testing of the pipeline joint according to claim 1, characterized in that: still include the pressure release subassembly, the pressure release subassembly comprises drain pipe, second valve and second water guide tubule, the one end of drain pipe is connected with the second valve, the other end of drain pipe with the other end of second water guide tubule is connected, wear to be equipped with the second connecting piece on the seal ring, the second water guide tubule with the connection can be dismantled to the second connecting piece.
6. The device for sealing, pressure testing and leakage testing of the pipeline joint as claimed in claim 5, wherein: first connecting piece with second connecting piece structure is the same, first connecting piece includes the hard tube and dismantles the pipe, the one end of hard tube is worn to locate inside the sealing washer, the other end of hard tube with dismantle the internal surface rotatable coupling of pipe one end, the internal surface of the pipe other end of dismantling is provided with the internal thread, the other end of first aqueduct tubule with the other end of second aqueduct tubule all is provided with the external screw thread.
7. The device for sealing, pressure testing and leakage testing of the pipeline joint as claimed in claim 6, wherein: the first connecting piece further comprises a rubber ring, and the other end of the hard tube is provided with the rubber ring.
8. The device for sealing, pressure testing and leakage testing of the pipeline joint according to claim 1, characterized in that: still include aeration components, the sealing washer is hollow structure, aeration components through the air cock with the sealing washer is connected.
9. The device for sealing, pressure testing and leakage testing of the pipeline joint as claimed in claim 8, wherein: the inflation assembly comprises an air pump and an air guide pipe, and the air pump is connected with the air faucet through the air guide pipe.
10. The device for sealing, pressure testing and leakage testing of the pipeline joint as claimed in claim 9, wherein: the air pump is characterized by further comprising a storage battery, and the storage battery is electrically connected with the air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110698304.XA CN113310640A (en) | 2021-06-23 | 2021-06-23 | Device for sealing pressure test and leakage test at pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110698304.XA CN113310640A (en) | 2021-06-23 | 2021-06-23 | Device for sealing pressure test and leakage test at pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113310640A true CN113310640A (en) | 2021-08-27 |
Family
ID=77380095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110698304.XA Pending CN113310640A (en) | 2021-06-23 | 2021-06-23 | Device for sealing pressure test and leakage test at pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113310640A (en) |
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2021
- 2021-06-23 CN CN202110698304.XA patent/CN113310640A/en active Pending
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