CN111504556A - Internal pressure test bed for sealing performance of flexible interface of fluid pipeline and application method thereof - Google Patents
Internal pressure test bed for sealing performance of flexible interface of fluid pipeline and application method thereof Download PDFInfo
- Publication number
- CN111504556A CN111504556A CN202010447642.1A CN202010447642A CN111504556A CN 111504556 A CN111504556 A CN 111504556A CN 202010447642 A CN202010447642 A CN 202010447642A CN 111504556 A CN111504556 A CN 111504556A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- sealing performance
- internal pressure
- test bed
- fluid pipeline
- 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.)
- Pending
Links
Images
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
-
- 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
Abstract
The invention discloses an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline and a using method thereof, and the internal pressure test bed comprises a supporting system, a jacking system, an upper end loading mechanism, a water injection pipe, a water discharge pipe, a pressurized air pipe and a control system, wherein the supporting system comprises a base, two triangular supports are distributed on the base, a middle support is arranged between the two triangular supports, slide rails are arranged on two sides of the base, a portal frame capable of sliding left and right is arranged on the slide rails, the upper end loading mechanism is arranged on the portal frame, the portal frame comprises a top cross frame and longitudinal frames which are arranged on two sides of the cross frame in a supporting mode, a lateral stabilizing mechanism is arranged on the longitudinal frames, and the lateral stabilizing mechanism comprises a front side stabilizing mechanism and a rear side stabilizing mechanism.
Description
Technical Field
The invention relates to the technical field of detection of sealing performance of a flexible interface of a fluid pipeline, in particular to an internal pressure test bed for the sealing performance of the flexible interface of the fluid pipeline and a using method thereof.
Background
The test of the sealing performance of the flexible interface of the fluid pipeline is a verification mode for performing tests such as pressure rise, pressure maintaining, pressure reduction and the like on a pressure-bearing pipeline of the nodular cast iron pipe in an environment filled with liquid (water) and gas; the method comprises internal pressure lower joint sealing detection and external pressure lower joint sealing detection, wherein the internal pressure lower joint sealing test is carried out at the joint of two sections of pipes, each section of pipe is at least 1m long, and the test device needs to be properly bounded regardless of whether the joint is in a straight, deflected or bearing state.
At present, no matter domestic or foreign special detection device for sealing performance under the flexible interface pressure of the fluid pipeline does not have a mature product on the market, the detection is mainly carried out in a mode of fixing two ends through three-point support at present, the detection difficulty is high, the time is long, meanwhile, the pipeline is required to be pressurized and deflected or is tested in a bearing state in the detection process, and the deflection angle is difficult to control, so that the pipe burst accident is easily caused.
In addition, at present, the water injection and inflation pressurization of the fluid pipeline are mainly realized by additionally arranging a water injection port and an inflation port on the fluid pipeline, so that the resource waste caused by the damage of different degrees of the pipeline after detection can be caused, and the water injection port, the inflation port, a water outlet and the like are required to be arranged on the pipeline to be detected before detection at every time, so that the problems of low detection efficiency and high detection cost are caused.
Disclosure of Invention
The object of the present invention is to solve two problems of the prior art,
1. the inner part of the pipeline needs to be pressurized and tested in a deflection or bearing state in the process of detecting the sealing performance of the flexible interface of the fluid pipeline, the problem of pipe burst accidents is easily caused because the deflection angle is difficult to control,
2. aiming at the problems of low detection efficiency and high detection cost caused by the fact that the water injection and inflation pressurization of the fluid pipeline are mainly realized by additionally arranging a water injection port and an inflation port on the fluid pipeline,
the inner pressure test bed for the sealing performance of the flexible interface of the fluid pipeline and the use method thereof are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline comprises a supporting system, a jacking system, an upper end loading mechanism, a water injection pipe, a drain pipe, a pressurized air pipe and a control system, wherein the supporting system comprises a base, two triangular supports are distributed on the base, a middle support is arranged between the two triangular supports, slide rails are arranged on two sides of the base, a portal frame capable of sliding left and right is arranged on the slide rails,
the jacking system comprises a left side jacking mechanism and a right side jacking mechanism, the left side jacking mechanism and the right side jacking mechanism are oppositely arranged, the left side jacking mechanism comprises a left fixed seat and a left hydraulic propulsion device, one end of the left hydraulic propulsion device is fixedly connected with the left fixed seat, the other end of the left hydraulic propulsion device is fixedly provided with a left plugging disc, the right side jacking mechanism is provided with a right plugging disc,
the upper end loading mechanism is arranged on the portal frame, the portal frame comprises a top cross frame and longitudinal frames arranged on two sides of the cross frame in a supporting mode, a lateral stabilizing mechanism is installed on each longitudinal frame, and the lateral stabilizing mechanism comprises a front side stabilizing mechanism and a rear side stabilizing mechanism.
Preferably, be equipped with water filling port, outlet and inflation inlet on left side shutoff dish or the right shutoff dish, water injection pipe sealing connection is on the water filling port, the trachea that pressurizes is connected on the inflation inlet, drain pipe sealing connection is on the outlet.
Preferably, the lateral stabilizing mechanism comprises a push rod and a V-shaped top block arranged at one section of the push rod, and the push rod is driven by hydraulic pressure or a lead screw mechanically.
Preferably, the upper loading mechanism comprises a loading rod and a V-shaped loading block arranged on one section of the loading rod, and the loading rod is driven by hydraulic pressure or air pressure.
Preferably, the right side tight mechanism in top includes right fixing base and right hydraulic pressure advancing device, right side hydraulic pressure advancing device is between right fixing base and right shutoff dish, right side hydraulic pressure advancing device's one end and right fixing base fixed connection, left side hydraulic pressure advancing device's the other end with can dismantle by the shutoff dish and be connected.
Preferably, the triangular support and the middle support are both lifting mechanisms.
Preferably, the gas filling pipe is provided with a barometer, and the water injection pipe is provided with a water pressure meter.
A use method of an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline is used for detecting the sealing performance of the interface of two sections of fluid pipelines, wherein each fluid pipeline comprises a left pipeline and a right pipeline, and the method is characterized by comprising the following steps of:
A. the left side jacking mechanism and the right side jacking mechanism are reset,
B. a left plugging disc is fixedly arranged at one end of the left hydraulic propelling device, a right plugging disc is arranged on the right side tightening mechanism,
C. the right pipeline is hoisted to the upper part of the triangular support, one end of the right pipeline is matched and connected with the right plugging disc,
D. hoisting the left pipeline to the upper part of the triangular support, connecting one end of the left pipeline with the left plugging disc in a matching way,
E. the height of the triangle is adjusted to ensure that the central axes of the left pipeline and the right pipeline are superposed,
F. a sealing ring is arranged at the pipeline opening at one side of the right pipeline close to the left pipeline,
G. the left pipeline and the right pipeline are spliced into a whole by adjusting the relative distance between the left jacking mechanism and the right jacking mechanism, the relative positions of the portal frame and the lateral stabilizing mechanism are adjusted in the splicing process, the left pipeline or the right pipeline is prevented from deviating in the splicing process,
H. after the fluid pipeline is installed, the water injection pipe, the water discharge pipe and the pressurized air pipe are respectively connected with the water injection port, the water discharge port and the inflation port in a sealing way,
I. and finally, detecting the internal pressure sealing performance of the fluid pipeline according to a detection standard, wherein the relative positions of the portal frame and the lateral stabilizing mechanism are required to be adjusted in the detection process, so that the pipe explosion of the fluid pipeline in the water injection and pressurization processes is prevented.
Compared with the prior art, the invention provides an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline and a use method thereof, and the internal pressure test bed has the following beneficial effects:
1. the fluid pipeline flexible interface sealing performance test bed and the use method thereof are characterized in that a portal frame is arranged, an upper end loading mechanism is arranged on the portal frame, the requirement of a top pressurization experiment in the test process is met, a lateral stabilizing mechanism is arranged on the portal frame to form a supporting structure for the portal frame, the supporting effect is achieved in the process of testing the fluid pipeline flexible interface sealing performance, meanwhile, the effect of unilateral lateral pressurization test can be achieved, the pipeline does not need to be adjusted for multiple times, the multipoint pressurization test can be achieved, the installation time is shortened while the safety protection effect is achieved, and the installation efficiency is improved.
2. According to the test bed for the sealing performance of the flexible interface of the fluid pipeline and the using method thereof, the water filling port, the water discharging port and the air charging port are arranged on the plugging disc, the low detection efficiency can be realized mainly by additionally arranging the water filling port and the air charging port on the fluid pipeline aiming at the water filling and air charging pressurization of the fluid pipeline, the problem of high detection cost is solved, and meanwhile, the triangular supports and the middle supports are both arranged into lifting mechanisms, so that the requirements of detection of fluid pipelines with different specifications can be met. The working efficiency is greatly improved, and the detection cost is saved.
The parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device has the advantages of simple structure and convenient operation.
Drawings
Fig. 1 is a schematic front view structural diagram of a portal frame of an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline according to the present invention at an initial position;
fig. 2 is a schematic structural diagram of an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline according to the present invention during operation.
FIG. 3 is a side sectional view of an internal pressure test bed B-B for testing the sealing performance of a flexible interface of a fluid pipeline.
Fig. 4 is a schematic structural diagram of the internal pressure test bed for the sealing performance of the flexible joint of the fluid pipeline, which is provided by the invention, after the flexible pipeline is removed.
Fig. 5 is a schematic structural diagram of a portion a of an internal pressure test bed for testing the sealing performance of a flexible joint of a fluid pipeline according to the present invention.
In the figure: 1. the device comprises a left fixing seat, 2 a water injection pipe, 3 a right side jacking mechanism, 4 a portal frame, 41 an upper end loading mechanism, 42 a front side stabilizing mechanism, 43 a rear side stabilizing mechanism, 5 a left hydraulic propelling device, 6 a triangular support, 7 a middle support, 8 a pressurizing air pipe, 9 a fluid pipeline, 10 a base, 11 a drain pipe, 12 a left plugging disc, 13 a right plugging disc, 14 a slide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
referring to fig. 1-5, an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline comprises a support system, a tightening system, an upper end loading mechanism 41, a water injection pipe 2, a water discharge pipe 11, a pressurized air pipe 8 and a control system, wherein the support system comprises a base 10, two triangular supports 6 are distributed on the base 10, a middle support 7 is arranged between the two triangular supports 6, slide rails 14 are arranged on two sides of the base 10, a portal frame 4 capable of sliding left and right is arranged on each slide rail 14, the tightening system comprises a left tightening mechanism and a right tightening mechanism 3, the left tightening mechanism and the right tightening mechanism 3 are oppositely arranged, the left tightening mechanism comprises a left fixing seat 1 and a left hydraulic propulsion device 5, one end of the left hydraulic propulsion device 5 is fixedly connected with the left fixing seat 1, and a left plugging disc 12 is fixedly mounted at the other end of the left hydraulic propulsion device 5, right side top tight mechanism 3 is last to be provided with right shutoff dish 13, upper end loading mechanism 41 sets up on portal frame 4, portal frame 4 includes the top crossbearer and props up the vertical frame of establishing in the crossbearer both sides, install side direction stabilizing mean on the vertical frame, side direction stabilizing mean includes front side stabilizing mean 42 and rear side stabilizing mean 43.
Example two
On the basis of embodiment one, be equipped with water filling port, outlet and inflation inlet on a left side shutoff dish 12 or the right shutoff dish 13, 2 sealing connection of water injection pipe are on the water filling port, 8 connections of pressurization trachea are on the inflation inlet, 11 sealing connection of drain pipe are on the outlet, side direction stabilizing mean includes the pushing ram and sets up at one section V-arrangement kicking block of pushing ram, the pushing ram is by hydraulic drive, upper end loading mechanism 41 sets up including the loading rod and sets up at one section V-arrangement loading block of loading rod, the loading rod is by hydraulic drive.
EXAMPLE III
Different from the second embodiment, the pushing rod is mechanically driven by a lead screw, and the upper loading mechanism 41 is provided with a loading rod and a V-shaped loading block arranged at one section of the loading rod, and the loading rod is driven by air pressure.
Example four
On the basis of the first embodiment, the right side jacking mechanism 3 comprises a right fixed seat and a right hydraulic propulsion device, the right hydraulic propulsion device is arranged between the right fixed seat and the right plugging disc 13, one end of the right hydraulic propulsion device is fixedly connected with the right fixed seat, and the other end of the left hydraulic propulsion device 5 is detachably connected with the plugging disc.
EXAMPLE five
On the basis of the first embodiment, the triangular supports 6 and the middle support 7 are both lifting mechanisms.
EXAMPLE six
The air filling pipe is provided with a barometer, and the water injection pipe 2 is provided with a water pressure meter.
In the above embodiment of the present invention: a use method of an internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline is used for detecting the sealing performance of the interface of two sections of fluid pipelines 9, wherein each fluid pipeline 9 comprises a left pipeline and a right pipeline, and the method comprises the following steps:
A. the left side jacking mechanism and the right side jacking mechanism 3 are reset,
B. a left plugging disc 12 is fixedly arranged at one end of the left hydraulic propelling device 5, a right plugging disc 13 is arranged on the right side jacking mechanism 3,
C. the right pipeline is hoisted to the upper part of the triangular support 6, one end of the right pipeline is matched and connected with the right plugging disc 13,
D. the left pipeline is hoisted to the upper part of the triangular support 6, one end of the left pipeline is matched and connected with the left plugging disc 12,
E. the height of the triangle is adjusted to ensure that the central axes of the left pipeline and the right pipeline are superposed,
F. a sealing ring is arranged at the pipeline opening at one side of the right pipeline close to the left pipeline,
G. the left pipeline and the right pipeline are spliced into a whole by adjusting the relative distance between the left jacking mechanism and the right jacking mechanism 3, the relative positions of the portal frame 4 and the lateral stabilizing mechanism are adjusted in the splicing process, the left pipeline or the right pipeline is prevented from deviating in the splicing process,
H. after the fluid pipeline 9 is installed, the water injection pipe 2, the water discharge pipe 11 and the pressurized air pipe 8 are respectively connected with the water injection port, the water discharge port and the inflation port in a sealing way,
I. and finally, detecting the internal pressure sealing performance of the fluid pipeline 9 according to a detection standard, wherein the relative positions of the portal frame 4 and the lateral stabilizing mechanism are required to be adjusted in the detection process, so that the pipe explosion of the fluid pipeline 9 in the water injection and pressurization processes is prevented. .
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An internal pressure test bed for the sealing performance of a flexible interface of a fluid pipeline comprises a supporting system, a jacking system, an upper end loading mechanism, a water injection pipe, a water discharge pipe, a pressurizing air pipe and a control system,
the supporting system comprises a base, two triangular supports are distributed on the base, a middle support is arranged between the two triangular supports, slide rails are arranged on two sides of the base, a portal frame capable of sliding left and right is arranged on the slide rails,
the jacking system comprises a left side jacking mechanism and a right side jacking mechanism, the left side jacking mechanism and the right side jacking mechanism are oppositely arranged, the left side jacking mechanism comprises a left fixed seat and a left hydraulic propulsion device, one end of the left hydraulic propulsion device is fixedly connected with the left fixed seat, the other end of the left hydraulic propulsion device is fixedly provided with a left plugging disc, the right side jacking mechanism is provided with a right plugging disc,
the upper end loading mechanism is arranged on the portal frame, the portal frame comprises a top cross frame and longitudinal frames arranged on two sides of the cross frame in a supporting mode, a lateral stabilizing mechanism is installed on each longitudinal frame, and the lateral stabilizing mechanism comprises a front side stabilizing mechanism and a rear side stabilizing mechanism.
2. The internal pressure test bed for the sealing performance of the flexible connector of the fluid pipeline according to claim 1, wherein a water injection port, a water outlet and an inflation port are arranged on the left plugging disc or the right plugging disc, the water injection pipe is connected to the water injection port in a sealing mode, the pressurization air pipe is connected to the inflation port, and the water discharge pipe is connected to the water outlet in a sealing mode.
3. The internal pressure test bed for the sealing performance of the flexible interface of the fluid pipeline according to claim 1, wherein the lateral stabilizing mechanism comprises a push rod and a V-shaped top block arranged on one section of the push rod, and the push rod is driven by hydraulic pressure or mechanically through a lead screw.
4. The internal pressure test bed for the sealing performance of the flexible interface of the fluid pipeline according to claim 1, wherein the upper loading mechanism comprises a loading rod and a V-shaped loading block arranged on one section of the loading rod, and the loading rod is driven by hydraulic pressure or air pressure.
5. The internal pressure test bed for the sealing performance of the flexible connector of the fluid pipeline according to claim 1, wherein the right tightening mechanism comprises a right fixed seat and a right hydraulic propulsion device, the right hydraulic propulsion device is arranged between the right fixed seat and the right plugging disc, one end of the right hydraulic propulsion device is fixedly connected with the right fixed seat, and the other end of the left hydraulic propulsion device is detachably connected with the plugging disc.
6. The internal pressure test bed for the sealing performance of the flexible interface of the fluid pipeline according to claim 1, wherein the triangular support and the middle support are both lifting mechanisms.
7. The internal pressure test bed for the sealing performance of the flexible connector of the fluid pipeline as claimed in claim 1, wherein a barometer is arranged on the gas filling pipe, and a water pressure meter is arranged on the water injection pipe.
8. The use method of the internal pressure test bed for the sealing performance of the flexible interface of the fluid pipeline according to claim 1 is used for detecting the sealing performance of the interface of two sections of fluid pipelines, wherein the fluid pipelines comprise a left pipeline and a right pipeline, and the method is characterized by comprising the following steps:
A. the left side jacking mechanism and the right side jacking mechanism are reset,
B. a left plugging disc is fixedly arranged at one end of the left hydraulic propelling device, a right plugging disc is arranged on the right side tightening mechanism,
C. the right pipeline is hoisted to the upper part of the triangular support, one end of the right pipeline is matched and connected with the right plugging disc,
D. hoisting the left pipeline to the upper part of the triangular support, connecting one end of the left pipeline with the left plugging disc in a matching way,
E. the height of the triangle is adjusted to ensure that the central axes of the left pipeline and the right pipeline are superposed,
F. a sealing ring is arranged at the pipeline opening at one side of the right pipeline close to the left pipeline,
G. the left pipeline and the right pipeline are spliced into a whole by adjusting the relative distance between the left jacking mechanism and the right jacking mechanism, the relative positions of the portal frame and the lateral stabilizing mechanism are adjusted in the splicing process, the left pipeline or the right pipeline is prevented from deviating in the splicing process,
H. after the fluid pipeline is installed, the water injection pipe, the water discharge pipe and the pressurized air pipe are respectively connected with the water injection port, the water discharge port and the inflation port in a sealing way,
I. and finally, detecting the internal pressure sealing performance of the fluid pipeline according to a detection standard, wherein the relative positions of the portal frame and the lateral stabilizing mechanism are required to be adjusted in the detection process, so that the pipe explosion of the fluid pipeline in the water injection and pressurization processes is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447642.1A CN111504556A (en) | 2020-05-25 | 2020-05-25 | Internal pressure test bed for sealing performance of flexible interface of fluid pipeline and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447642.1A CN111504556A (en) | 2020-05-25 | 2020-05-25 | Internal pressure test bed for sealing performance of flexible interface of fluid pipeline and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111504556A true CN111504556A (en) | 2020-08-07 |
Family
ID=71872358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010447642.1A Pending CN111504556A (en) | 2020-05-25 | 2020-05-25 | Internal pressure test bed for sealing performance of flexible interface of fluid pipeline and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111504556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554202A (en) * | 2024-01-11 | 2024-02-13 | 常州富莱克汽车零部件制造有限公司 | Metal bellows local load performance detection test device |
-
2020
- 2020-05-25 CN CN202010447642.1A patent/CN111504556A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554202A (en) * | 2024-01-11 | 2024-02-13 | 常州富莱克汽车零部件制造有限公司 | Metal bellows local load performance detection test device |
| CN117554202B (en) * | 2024-01-11 | 2024-04-30 | 常州富莱克汽车零部件制造有限公司 | Metal bellows local load performance detection test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110823612B (en) | Tunnel surrounding rock lining composite structure stress waterproof test system and method | |
| CN205002928U (en) | Car intake pipe gas tightness check out test set | |
| CN201522405U (en) | Water pressure tester of steel tube | |
| CN111473926A (en) | Manifold airtightness detection device | |
| CN111504556A (en) | Internal pressure test bed for sealing performance of flexible interface of fluid pipeline and application method thereof | |
| CN209458570U (en) | A kind of pipe flange detection device | |
| CN212300722U (en) | Internal pressure test bed for sealing performance of flexible interface of fluid pipeline | |
| CN213121019U (en) | Air tightness detection device for processing of groove pipe fitting | |
| CN210243114U (en) | Bellows leakproofness detection device | |
| CN220136560U (en) | Pressurization test seat and pressurization test device | |
| CN210664913U (en) | Steel pipe air tightness test device | |
| CN202631205U (en) | Underwater air pressure testing device for stainless pipes | |
| CN110805462A (en) | Rapid supporting device and method in shield tunnel | |
| CN210269152U (en) | Withstand voltage testing arrangement of indoor fire hydrant | |
| CN211287733U (en) | Quick strutting arrangement in shield tunnel | |
| CN210567572U (en) | Underground pipeline air tightness checking device | |
| CN211527717U (en) | Flowmeter sealing performance detection device adopting lifting device | |
| CN210221405U (en) | Comprehensive experiment device for airplane guide pipe | |
| CN219015552U (en) | Sealing detection equipment for detecting two pipe fittings at one time | |
| CN206311440U (en) | Locomotive weld-end fittings assembly intensity water pressure testing board | |
| CN111175134A (en) | Dual-purpose experiment device and method for anti-pulling and anti-permeability of pipe sheet | |
| CN219830232U (en) | Valve tightness detection equipment | |
| CN214373319U (en) | Detachable valve hydrostatic test device | |
| CN213812775U (en) | Shield constructs section of jurisdiction prefab water leakage test platform | |
| CN218546043U (en) | Automatic change quick detection 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 |