CN110595702A - Double-oil-pipe pumping pressure tool and hydraulic test method - Google Patents
Double-oil-pipe pumping pressure tool and hydraulic test method Download PDFInfo
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- CN110595702A CN110595702A CN201910688698.3A CN201910688698A CN110595702A CN 110595702 A CN110595702 A CN 110595702A CN 201910688698 A CN201910688698 A CN 201910688698A CN 110595702 A CN110595702 A CN 110595702A
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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
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a double-oil-pipe pumping pressure tool and a hydraulic test method, and belongs to the field of tool design. The double oil pipes comprise inner oil pipes, outer oil pipes and set screws, and the pumping pressure tool comprises an inner oil pipe connector and an outer oil pipe connector; the inner oil pipe joint is arranged at the first end of the double oil pipes, a through hole is arranged in the inner oil pipe joint, the first end of the through hole is communicated with the outside of the double oil pipes, the second end of the through hole is communicated with the inner oil pipes, and the length of the through hole in the direction vertical to the extending direction is smaller than the diameter of the inner oil pipes; the outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are vertical to the extending direction are arranged in the outer oil pipe joint, the first end of the first oil hole is communicated with the first end of the second oil hole, the second end of the first oil hole is communicated with the double oil pipes, the second end of the second oil hole is communicated with the outer oil pipes, and the length of the second oil hole is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipes. The invention can accurately judge the sealing performance of the double oil pipes.
Description
Technical Field
The invention relates to the field of tool design, in particular to a double-oil-pipe pumping pressure tool and a hydraulic test method.
Background
The controllable pitch propeller is a ship propulsion device, and the double oil pipes are common structures in the controllable pitch propeller. The double oil pipes are mainly formed by positioning and assembling an inner oil pipe and an outer oil pipe through radial set screws and are provided with two independent oil passages of the inner oil pipe and the outer oil pipe. Wherein, both ends of outer oil pipe all are equipped with the screw thread, and the both ends of interior oil pipe do not set up the screw thread.
The double oil pipes are important oil passages in the controllable pitch propeller, and the oil pressure in the double oil pipes can reach the safety pressure of a hydraulic system. If leakage occurs in the double oil pipes, the working pressure of the hydraulic system can be reduced, and the normal work of the controllable-pitch propeller is further influenced. And the double oil pipes are arranged inside the main propulsion shaft system of the controllable pitch propeller, so that the maintenance engineering difficulty is high, and the cost is high, so that the sealing performance detection of the double oil pipes is very important before the double oil pipes are arranged.
The sealing performance test is generally realized by a hydraulic test. The hydraulic test is a pressure test of a test object with a liquid medium. The hydraulic test is generally carried out as follows: forming a sealed cavity inside the test object by using a pumping pressure tool; injecting a liquid medium into the sealed cavity until the pressure in the sealed cavity reaches a preset value; and maintaining the pressure for a set time, and observing whether the sealed cavity has a leakage phenomenon or not, so as to test whether the test object has the leakage phenomenon under the specified pressure or not.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the double oil pipes are internally provided with two independent oil ways of an inner oil pipe and an outer oil pipe. If a hydraulic test is carried out on the double-oil-pipe integral seal by using a pumping pressure tool, when a leakage phenomenon occurs, the leakage of at least one of the inner oil pipe and the outer oil pipe can only be determined; and it is impossible to determine whether there is a leak between the inner oil pipe and the outer oil pipe even if the leakage phenomenon does not occur. Therefore, the existing hydraulic test cannot accurately detect the sealing performance of the double oil pipes.
Disclosure of Invention
The embodiment of the invention provides a double-oil-pipe pumping pressure tool and a hydraulic test method, which can respectively perform hydraulic tests on an inner oil pipe and an outer oil pipe in double oil pipes and accurately detect the sealing performance of the double oil pipes. The technical scheme is as follows:
on one hand, the embodiment of the invention provides a pumping pressure tool for double oil pipes, wherein the double oil pipes comprise an inner oil pipe, an outer oil pipe and a set screw, the outer oil pipe is sleeved outside the inner oil pipe, and the outer oil pipe is fixedly connected with the inner oil pipe through the set screw;
the pumping pressure tool comprises an inner oil pipe joint and an outer oil pipe joint; the inner oil pipe joint is arranged at the first end of the double oil pipes, a through hole is arranged in the inner oil pipe joint, the first end of the through hole is communicated with the outside of the double oil pipes, the second end of the through hole is communicated with the inner oil pipes, and the length of the through hole in the direction perpendicular to the extending direction is smaller than the diameter of the inner oil pipes; the outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are vertical to each other in the extending direction are arranged in the outer oil pipe joint, the first end of the first oil hole is communicated with the first end of the second oil hole, the second end of the first oil hole is communicated with the outside of the double oil pipes, the second end of the second oil hole is communicated with the outer oil pipes, and the length of the second oil hole is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipes.
Optionally, the number of the second oil holes is plural, and the plural second oil holes are arranged at intervals around the first oil hole.
Further, the number of the second oil holes is four, and the four second oil holes are in a cross shape.
Optionally, one end of the outer tubing joint is disposed within the inner tubing.
Furthermore, a first groove is formed in the position, attached to the inner oil pipe, of the outer oil pipe joint, and a sealing piece is arranged in the first groove.
Optionally, one end of the inner tubing joint is disposed between the inner and outer tubing.
Optionally, the pumping pressure tool further comprises a fixing nut and a fixing cylinder, the fixing cylinder is sleeved outside the outer oil pipe, and the outer oil pipe joint is fixedly connected with the fixing cylinder through the fixing nut.
Further, the pumping pressure frock still includes sealed barrel, sealed barrel sets up fixed barrel with between the outer oil pipe joint, and through fixation nut with fixed barrel fixed connection.
Optionally, the pumping tool further comprises a pumping sub disposed in at least one of the inner tubing joint and the outer tubing joint.
On the other hand, the embodiment of the invention provides a hydraulic test method for double oil pipes, which comprises the following steps:
installing a pumping pressure tool on a double oil pipe, wherein the double oil pipe comprises an inner oil pipe, an outer oil pipe and a set screw, the outer oil pipe is sleeved outside the inner oil pipe, and the outer oil pipe is fixedly connected with the inner oil pipe through the set screw; the pumping pressure tool comprises an inner oil pipe joint and an outer oil pipe joint; the inner oil pipe joint is arranged at the first end of the double oil pipes, a through hole is arranged in the inner oil pipe joint, the first end of the through hole is communicated with the outside of the double oil pipes, the second end of the through hole is communicated with the inner oil pipes, and the length of the through hole in the direction perpendicular to the extending direction is smaller than the diameter of the inner oil pipes; the outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are vertical to each other in the extending direction are arranged in the outer oil pipe joint, the first end of the first oil hole is communicated with the first end of the second oil hole, the second end of the first oil pipe is communicated with the outside of the double oil pipes, the second end of the second oil hole is communicated with the outer oil pipes, and the length of the second oil hole is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipe;
injecting a liquid medium into the inner oil pipe through the inner oil pipe joint, and performing a hydraulic test on the inner oil pipe;
and injecting a liquid medium into the outer oil pipe through the outer oil pipe joint, and carrying out a hydraulic test on the outer oil pipe.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
through oil pipe joint in the first end setting at two oil pipes, be equipped with the through-hole that communicates interior oil pipe and two oil pipes outward in the interior oil pipe joint, the through-hole is less than interior oil pipe's diameter in the ascending length of perpendicular to extending direction, can form the shutoff to outer oil pipe on the one hand, and on the other hand can be to injecting liquid medium in the interior oil pipe. Simultaneously, an outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are communicated with each other and are vertical to the extending direction are arranged in the outer oil pipe joint, the outer oil pipe and the double oil pipes are communicated with each other through the first oil hole and the second oil hole, the length of the oil hole extending along the radial direction of the outer oil pipe is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipe, on one hand, the inner oil pipe can be blocked, and on the other hand, a liquid medium can be injected. By utilizing the inner oil pipe plugging and the outer oil pipe plugging, a liquid medium can be injected into the inner oil pipe to perform a hydraulic test under the condition of isolating the outer oil pipe, a liquid medium can also be injected into the outer oil pipe to perform a hydraulic test under the condition of isolating the inner oil pipe, the inner oil pipe and the outer oil pipe perform a hydraulic test respectively, only one test object is needed, the test result has no interference, and the sealing performance of the double oil pipes can be accurately judged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dual oil pipe provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pumping tool for dual oil pipes according to an embodiment of the present invention;
FIG. 3 is a front view of an outer tubing joint provided in accordance with an embodiment of the present invention;
FIG. 4 is a side view of an outer tubing joint provided in accordance with an embodiment of the present invention;
fig. 5 is a flowchart of a hydraulic test method for dual oil pipes according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a pumping pressure tool with double oil pipes. Fig. 1 is a schematic structural view of a double oil pipe provided in an embodiment of the present invention, and referring to fig. 1, the double oil pipe includes an inner oil pipe 11, an outer oil pipe 12 and a set screw 13, the outer oil pipe 12 is sleeved outside the inner oil pipe 11, and the outer oil pipe 12 and the inner oil pipe 11 are fixedly connected through the set screw 13.
Further, the number of the set screws 13 may be multiple, and a plurality of set screws 13 are arranged at intervals along the axial direction of the inner oil pipe 11 to ensure a firm connection between the outer oil pipe and the inner oil pipe.
In practical application, the inner oil pipe 11 and the outer oil pipe 12 can be formed by sequentially connecting a plurality of sections of pipe bodies, the requirements of oil pipes with various lengths can be met, and the cost is low.
Illustratively, as shown in fig. 1, two adjacent pipe bodies are a first pipe body and a second pipe body, respectively, and a connecting end of the first pipe body and the second pipe body may be provided with a groove 100, and a connecting end of the second pipe body and the first pipe body is disposed in the groove 100 and welded on a side wall 100 of the groove. Therefore, the pipe bodies are firmly connected, the diameters of the through holes in the pipe bodies are basically consistent, and fluctuation in the oil liquid transportation process can be avoided as much as possible.
In addition, both ends of the inner oil pipe 11 are not provided with screw threads, and both ends of the outer oil pipe 12 are provided with screw threads. Illustratively, a first end of outer tubing 12 may be internally threaded and a second end of outer tubing 12 may be externally threaded.
Fig. 2 is a schematic structural view of a pumping tool for double oil pipes according to an embodiment of the present invention. Referring to fig. 2, the pumping tooling includes an inner tubing connector 21 and an outer tubing connector 22. The inner oil pipe joint 21 is arranged at the first end of the double oil pipes, a through hole 21a is formed in the inner oil pipe joint 21, the first end of the through hole 21a is communicated with the outside of the double oil pipes, the second end of the through hole 21a is communicated with the inner oil pipe 11, and the length a of the through hole 21a in the direction perpendicular to the extending direction is smaller than the diameter of the inner oil pipe 11. Fig. 3 is a front view of an outer tubing joint provided in an embodiment of the present invention, and fig. 4 is a side view of the outer tubing joint provided in an embodiment of the present invention. Referring to fig. 2, 3 and 4, the outer oil pipe joint 22 is disposed at a second end of the dual oil pipe, a first oil hole 22a and a second oil hole 22b extending in a vertical direction are disposed in the outer oil pipe joint 22, a first end of the first oil hole 22a communicates with a first end of the second oil hole 22b, a second end of the first oil pipe 22a communicates with the exterior of the dual oil pipe, a second end of the second oil hole 22b communicates with the outer oil pipe 12, and a length b of the second oil hole 22b is greater than a radius of the inner oil pipe 11 and less than a radius of the outer oil pipe 12.
According to the embodiment of the invention, the inner oil pipe joint is arranged at the first end of the double oil pipes, the through hole for communicating the inner oil pipe with the outside of the double oil pipes is arranged in the inner oil pipe joint, and the length of the through hole in the direction vertical to the extending direction is smaller than the diameter of the inner oil pipe, so that the outer oil pipe can be plugged, and a liquid medium can be injected into the inner oil pipe. Simultaneously, an outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are communicated with each other and are vertical to the extending direction are arranged in the outer oil pipe joint, the outer oil pipe and the double oil pipes are communicated with each other through the first oil hole and the second oil hole, the length of the oil hole extending along the radial direction of the outer oil pipe is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipe, on one hand, the inner oil pipe can be blocked, and on the other hand, a liquid medium can be injected. By utilizing the inner oil pipe plugging and the outer oil pipe plugging, a liquid medium can be injected into the inner oil pipe to perform a hydraulic test under the condition of isolating the outer oil pipe, a liquid medium can also be injected into the outer oil pipe to perform a hydraulic test under the condition of isolating the inner oil pipe, the inner oil pipe and the outer oil pipe perform a hydraulic test respectively, only one test object is needed, the test result has no interference, and the sealing performance of the double oil pipes can be accurately judged.
Alternatively, as shown in fig. 4, the number of the second oil holes 22b may be multiple, and the multiple second oil holes 22b are spaced around the first oil hole 22a, so as to be beneficial to splitting the liquid medium injected into the outer oil pipe.
Further, as shown in fig. 4, the number of the second oil holes 22b may be four, and the four second oil holes 22b are cross-shaped, so that the liquid medium can be uniformly injected into the outer oil pipe.
Alternatively, as shown in FIG. 2, one end of the outer tubing joint 22 may be disposed within the inner tubing 11 to form an effective seal against the inner tubing.
Further, as shown in fig. 2 and 3, a first groove 22c may be formed at a position where the outer oil pipe joint 22 is attached to the inner oil pipe 11, and a sealing member is disposed in the first groove 22c, so that sealing between the outer oil pipe joint and the inner oil pipe is facilitated, oil injected into the outer oil pipe is prevented from leaking into the inner oil pipe, and accuracy of a hydraulic test is improved.
Optionally, as shown in FIG. 2, one end of the inner tubing joint 21 is disposed between the inner tubing 11 and the outer tubing 12 to form an effective seal against the outer tubing.
In practical applications, the inner joint 21 is disposed between the inner oil pipe 11 and the outer oil pipe 12 at one end thereof and is threadedly coupled to the outer oil pipe 12 to fix the inner joint 21 to the dual oil pipe.
Further, as shown in fig. 2, a second groove 21b may be formed at a position where the inner oil pipe joint 21 is attached to the inner oil pipe 11, and a sealing member is disposed in the second groove 21b, so that sealing between the inner oil pipe joint and the inner oil pipe is facilitated, leakage of oil injected into the inner oil pipe into the outer oil pipe is avoided, and accuracy of a hydraulic test is improved.
Further, as shown in fig. 2, a third groove 21c may be formed at a position where the inner oil pipe joint 21 is attached to the outer oil pipe 12, and a sealing member is disposed in the third groove 21c, so that sealing between the inner oil pipe joint and the outer oil pipe is facilitated, and a plugging effect on the outer oil pipe is improved.
Optionally, as shown in fig. 2, the pumping tool may further include a fixing nut 23 and a fixing cylinder 24, the fixing cylinder 24 is sleeved outside the outer oil pipe 12, and the outer oil pipe joint 22 is fixedly connected to the fixing cylinder 24 through the fixing nut 23, so as to set the outer oil pipe joint on the double oil pipes.
In practice, the stationary barrel 24 is threaded with the outer tubing 12 to secure the outer tubing joint to the dual tubing.
Further, as shown in fig. 2, the pumping tool may further include a sealing cylinder 25, where the sealing cylinder 25 is disposed between the fixing cylinder 24 and the outer oil pipe joint 22, and is fixedly connected to the fixing cylinder 24 through the fixing nut 23, so as to prevent the fixing cylinder from leaking the outer oil pipe.
Furthermore, as shown in fig. 2, a fourth groove 25a may be disposed at a position where the sealing cylinder 25 is attached to the outer oil pipe 12, and a sealing member is disposed in the fourth groove 25a, so as to prevent oil leakage from the outer oil pipe and improve accuracy of the hydraulic test.
Furthermore, as shown in fig. 2, a fifth groove 25b may be formed at a position where the sealing cylinder 25 is attached to the outer oil pipe joint 22, and a sealing member is disposed in the fifth groove 25b, so that oil leakage of the outer oil pipe can be avoided, and accuracy of the hydraulic test can be improved.
Optionally, as shown in fig. 2, the pumping tool may further include a pumping sub 26, and the pumping sub 26 is disposed in at least one of the inner pipe joint 21 and the outer pipe joint 22 to facilitate communication with a hydraulic pump for injecting the liquid medium.
The embodiment of the invention provides a hydraulic test method for double oil pipes. Fig. 5 is a flowchart of a hydraulic test method for dual oil pipes according to an embodiment of the present invention. Referring to fig. 5, the hydraulic test method includes:
step 201: and a pumping pressure tool is arranged on the double oil pipes.
In this embodiment, the double oil pipes include an inner oil pipe, an outer oil pipe and a set screw, the outer oil pipe is sleeved outside the inner oil pipe, and the outer oil pipe and the inner oil pipe are fixedly connected through the set screw.
The pumping pressure tool comprises an inner oil pipe joint and an outer oil pipe joint. Interior oil pipe joint sets up the first end at two oil pipe, is equipped with the through-hole in the interior oil pipe joint, and the first end and the outer intercommunication of two oil pipe of through-hole, the second end and the interior oil pipe intercommunication of through-hole, the length of through-hole on the perpendicular to extending direction is less than interior oil pipe's diameter. The outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are vertical to the extending direction are arranged in the outer oil pipe joint, the first end of the first oil hole is communicated with the first end of the second oil hole, the second end of the first oil pipe is communicated with the double oil pipes, the second end of the second oil hole is communicated with the outer oil pipes, and the length of the second oil hole is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipes.
Step 202: and injecting a liquid medium into the inner oil pipe through the joint of the inner oil pipe, and performing a hydraulic test on the inner oil pipe.
Step 203: and injecting a liquid medium into the outer oil pipe through the outer oil pipe joint to perform a hydraulic test on the outer oil pipe.
In practical application, when a hydraulic test is carried out, a liquid medium is injected to form pressure, then the change of the pressure is observed, and if the double oil pipes are observed whether the leakage phenomenon occurs after a set time, the sealing performance of the double oil pipes can be determined.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The pumping pressure tool for the double oil pipes is characterized by comprising an inner oil pipe (11), an outer oil pipe (12) and a set screw (13), wherein the outer oil pipe (12) is sleeved outside the inner oil pipe (11), and the outer oil pipe (12) is fixedly connected with the inner oil pipe (11) through the set screw (13);
the pumping pressure tool comprises an inner oil pipe joint (21) and an outer oil pipe joint (22); the inner oil pipe joint (21) is arranged at the first end of the double oil pipes, a through hole (21a) is formed in the inner oil pipe joint (21), the first end of the through hole (21a) is communicated with the outside of the double oil pipes, the second end of the through hole (21a) is communicated with the inner oil pipe (11), and the length of the through hole (21a) in the direction perpendicular to the extending direction is smaller than the diameter of the inner oil pipe (11); the outer oil pipe joint (22) is arranged at the second end of the double oil pipes, a first oil hole (22a) and a second oil hole (22b) which are vertical to each other in the extending direction are formed in the outer oil pipe joint (22), the first end of the first oil hole (22a) is communicated with the first end of the second oil hole (22b), the second end of the first oil hole (22a) is communicated with the double oil pipes, the second end of the second oil hole (22b) is communicated with the outer oil pipes (12), and the length of the second oil hole (22b) is larger than the radius of the inner oil pipe (11) and smaller than the radius of the outer oil pipes (12).
2. The pumping pressure tool according to claim 1, wherein the number of the second oil holes (22b) is plural, and the plural second oil holes (22b) are provided at intervals around the first oil hole (22 a).
3. The pumping pressure tool according to claim 2, wherein the number of the second oil holes (22b) is four, and the four second oil holes (22b) are cross-shaped.
4. The pumping pressure tool according to any one of claims 1 to 3, wherein one end of the outer oil pipe joint (22) is arranged in the inner oil pipe (11).
5. The pumping pressure tool according to claim 4, wherein a first groove (22c) is formed at a position where the outer oil pipe joint (22) is attached to the inner oil pipe (11), and a sealing member is arranged in the first groove (22 c).
6. The pumping pressure tool according to any one of claims 1 to 3, wherein one end of the inner oil pipe joint (21) is disposed between the inner oil pipe (11) and the outer oil pipe (12).
7. The pumping pressure tool according to any one of claims 1 to 3, further comprising a fixing nut (23) and a fixing cylinder (24), wherein the fixing cylinder (24) is sleeved outside the outer oil pipe (12), and the outer oil pipe joint (22) is fixedly connected with the fixing cylinder (24) through the fixing nut (23).
8. The pumping tooling as claimed in claim 7, further comprising a sealing cylinder (25), wherein the sealing cylinder (25) is disposed between the fixed cylinder (24) and the outer tubing joint (22) and is fixedly connected with the fixed cylinder (24) by the fixing nut (23).
9. The pumping tooling as set forth in any one of claims 1-3, further comprising a pumping sub (26), the pumping sub (26) being disposed within at least one of the inner tubing connector (21) and the outer tubing connector (22).
10. A hydraulic test method for double oil pipes is characterized by comprising the following steps:
installing a pumping pressure tool on a double oil pipe, wherein the double oil pipe comprises an inner oil pipe, an outer oil pipe and a set screw, the outer oil pipe is sleeved outside the inner oil pipe, and the outer oil pipe is fixedly connected with the inner oil pipe through the set screw; the pumping pressure tool comprises an inner oil pipe joint and an outer oil pipe joint; the inner oil pipe joint is arranged at the first end of the double oil pipes, a through hole is arranged in the inner oil pipe joint, the first end of the through hole is communicated with the outside of the double oil pipes, the second end of the through hole is communicated with the inner oil pipes, and the length of the through hole in the direction perpendicular to the extending direction is smaller than the diameter of the inner oil pipes; the outer oil pipe joint is arranged at the second end of the double oil pipes, a first oil hole and a second oil hole which are vertical to each other in the extending direction are arranged in the outer oil pipe joint, the first end of the first oil hole is communicated with the first end of the second oil hole, the second end of the first oil pipe is communicated with the outside of the double oil pipes, the second end of the second oil hole is communicated with the outer oil pipes, and the length of the second oil hole is larger than the radius of the inner oil pipe and smaller than the radius of the outer oil pipe;
injecting a liquid medium into the inner oil pipe through the inner oil pipe joint, and performing a hydraulic test on the inner oil pipe;
and injecting a liquid medium into the outer oil pipe through the outer oil pipe joint, and carrying out a hydraulic test on the outer oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910688698.3A CN110595702B (en) | 2019-07-29 | 2019-07-29 | Double-oil-pipe pumping pressure tool and hydraulic test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910688698.3A CN110595702B (en) | 2019-07-29 | 2019-07-29 | Double-oil-pipe pumping pressure tool and hydraulic test method |
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| Publication Number | Publication Date |
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| CN110595702A true CN110595702A (en) | 2019-12-20 |
| CN110595702B CN110595702B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910688698.3A Active CN110595702B (en) | 2019-07-29 | 2019-07-29 | Double-oil-pipe pumping pressure tool and hydraulic test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281187A (en) * | 2021-06-25 | 2021-08-20 | 临海伟星新型建材有限公司 | Pipe pressure resistance testing device and testing method thereof |
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| US20070220957A1 (en) * | 2006-03-22 | 2007-09-27 | Karl-Heinz Krah Gmbh | Internal pressure testing apparatus and method for pipe |
| CN208091638U (en) * | 2018-03-21 | 2018-11-13 | 无锡华毅管道有限公司 | Pressure testing device for steel cylinder concrete top pipe slurry injection hole sealing detection |
| CN109632213A (en) * | 2019-01-03 | 2019-04-16 | 武汉船用机械有限责任公司 | A kind of sealing detection tooling for double tube |
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2019
- 2019-07-29 CN CN201910688698.3A patent/CN110595702B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070220957A1 (en) * | 2006-03-22 | 2007-09-27 | Karl-Heinz Krah Gmbh | Internal pressure testing apparatus and method for pipe |
| CN208091638U (en) * | 2018-03-21 | 2018-11-13 | 无锡华毅管道有限公司 | Pressure testing device for steel cylinder concrete top pipe slurry injection hole sealing detection |
| CN109632213A (en) * | 2019-01-03 | 2019-04-16 | 武汉船用机械有限责任公司 | A kind of sealing detection tooling for double tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281187A (en) * | 2021-06-25 | 2021-08-20 | 临海伟星新型建材有限公司 | Pipe pressure resistance testing device and testing method thereof |
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| Publication number | Publication date |
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| CN110595702B (en) | 2021-08-31 |
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