CN109443634B - Sealing pressure measuring structure - Google Patents
Sealing pressure measuring structure Download PDFInfo
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- CN109443634B CN109443634B CN201811592416.1A CN201811592416A CN109443634B CN 109443634 B CN109443634 B CN 109443634B CN 201811592416 A CN201811592416 A CN 201811592416A CN 109443634 B CN109443634 B CN 109443634B
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- hole
- pressure measuring
- rod
- locking rod
- sealing ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 109
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 20
- 230000001788 irregular Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 210000004907 gland Anatomy 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a sealing pressure measuring structure, and belongs to the technical field of hydraulic machinery. The invention comprises a measured component, wherein the measured component is provided with an A hole and a B hole, the A hole and the B hole are intersecting holes, a locking rod is inserted in the A hole, a pressure measuring rod is inserted in the B hole, and the locking rod and the pressure measuring rod are in threaded connection at the juncture of the A hole and the B hole; the sealing surface between the locking rod and the hole A is provided with a first O-shaped sealing ring, and the sealing surface between the pressure measuring rod and the hole B is provided with a second O-shaped sealing ring; the outer end of the pressure measuring rod is provided with a connecting interface communicated with the inner cavity of the measured part. The invention effectively solves the pressure measurement problem of the prior part parts with irregular appearance and the parts not suitable for the traditional blind plate parts fixed by bolts, completes the design and production of the sealing pressure measurement structure with simple structure, good stability and integrated functions of compression, sealing, pressure measurement and the like, has great practical value and can be widely popularized and applied.
Description
Technical Field
The invention relates to a sealing pressure measuring structure, which can be used for sealing pressure measuring detection for measuring water pressure or air pressure, and belongs to the technical field of hydraulic machinery.
Background
At present, when petrochemical complete sets of valves and related parts and water system fluid pipelines are used for controlling various parts, universal hydraulic cylinders and various parts of a hydraulic system, after the production of one part and part product is completed, pressure test is required to be carried out according to the design and standard requirements, and the pressure test is carried out according to the required pressure and time. And (3) adopting water pressure or air pressure to press and maintain pressure, and checking whether the product has faults such as obvious deformation, leakage and the like so as to judge whether the product is qualified. The design of pressure testing frock is crucial, and traditional mode is parts such as bolt direct fixation blind plate generally, to the parts of partial irregular appearance, and this traditional mode is not suitable for.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the utility model provides a sealed pressure measurement structure solves the pressure measurement problem of parts such as irregular spare part of appearance, unsuitable tradition bolt fastening blind plate that often meet to avoid pressure measurement frock design, production cycle length, its compress tightly, sealed, pressure measurement device complicacy scheduling problem.
The technical scheme adopted for solving the technical problems is as follows: the sealing pressure measuring structure comprises a measured part, wherein an A hole and a B hole are formed in the measured part, the A hole and the B hole are intersecting holes, a locking rod is inserted into the A hole, a pressure measuring rod is inserted into the B hole, and the locking rod is in threaded connection with the pressure measuring rod at the juncture of the A hole and the B hole; the sealing surface between the locking rod and the hole A is provided with a first O-shaped sealing ring, and the sealing surface between the pressure measuring rod and the hole B is provided with a second O-shaped sealing ring; the outer end of the pressure measuring rod is provided with a connecting interface communicated with the inner cavity of the measured part.
Further is: the first O-shaped sealing ring is arranged at the outer end face of the hole A, is fixed through a sealing gland, and is in threaded connection with the outer end of the locking rod.
Further is: the first O-shaped sealing ring is arranged at the inner wall of the hole A, a first step for positioning the inner end of the first O-shaped sealing ring is arranged on the side wall of the locking rod, and the first O-shaped sealing ring is fixed through the locking stud; the locking stud is fixed through being directly connected with the outer end of the locking rod in a threaded manner, or is fixed through being connected with the outer end of the locking rod in a threaded manner through a locking nut, or is fixed through a combination of the two threaded connections. When the second O-shaped sealing ring is arranged at the inner wall of the B hole, the second O-shaped sealing ring can adopt the same mounting structure as the first O-shaped sealing ring.
Further is: the second O-shaped sealing ring is arranged at the outer end face of the B hole and fixed through a sealing pressure measuring end cover, the sealing pressure measuring end cover is in threaded connection with the outer end of the pressure measuring rod, and the sealing pressure measuring end cover is provided with an interface matched with the pressure measuring gauge.
Further is: the pressure measuring meter interface of the sealing pressure measuring end cover is designed at the protruding top end of the sealing pressure measuring end cover or on the flange surface of the sealing pressure measuring end cover.
Further is: the inner end of the locking rod is connected with a threaded hole on the pressure measuring rod in a matched manner through an external thread.
Further is: the side wall of the locking rod is provided with a second step, and one side end face of the second step is contacted with the pressure measuring rod so as to realize the connection and positioning of the locking rod and the pressure measuring rod.
Further is: the threaded hole on the pressure measuring rod is provided with a counter sinking hole matched with the second step of the locking rod at one end facing the locking rod.
The beneficial effects of the application are as follows: the application is suitable for the working condition that the tested part is provided with intersecting holes, the intersecting holes are orthogonal or oblique, the installation of the pressure measuring rod is realized through the interlocking connection of the locking rod and the pressure measuring rod, the sealing performance of the device is ensured by the arranged first O-shaped sealing ring and the second O-shaped sealing ring, the locking rod and the pressure measuring rod are both inserted into the holes, and even if the outer end face of the holes is irregular, the installation is not influenced. The application has the advantages of short adaptive design period, simple structure and effectively shortened production period, and has relatively low cost, thereby providing a practical and convenient method for the pressure measurement test of the existing partial products.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a front view of a first embodiment of the present invention.
Fig. 3 is a cross-sectional view A-A of fig. 2.
Fig. 4 is a schematic perspective view of a second embodiment of the present invention.
Fig. 5 is a front view of a second embodiment of the present invention.
Fig. 6 is a B-B cross-sectional view of fig. 5.
Marked in the figure as: 1-sealing gland, 2-locking rod, 21-first step, 22-second step, 3-first O-shaped sealing ring, 4-second O-shaped sealing ring, 5-sealing pressure measuring end cover, 51-protruding top end, 52-flange surface, 6-pressure measuring rod, 7-measured part, 71-A hole, 72-B hole, 8-locking stud and 9-locking nut.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 6, the device comprises a measured component 7, wherein a hole 71 and a hole 72 are arranged on the measured component 7, the hole 71 and the hole 72 are intersecting holes, a locking rod 2 is inserted into the hole 71, a pressure measuring rod 6 is inserted into the hole 72, and the locking rod 2 and the pressure measuring rod 6 are in threaded connection at the juncture of the hole 71 and the hole 72; a first O-shaped sealing ring 3 is arranged on the sealing surface between the locking rod 2 and the A hole 71, and a second O-shaped sealing ring 4 is arranged on the sealing surface between the pressure measuring rod 6 and the B hole 72; the outer end of the pressure measuring rod 6 is provided with a connecting interface which is communicated with the inner cavity of the measured part 7. The application is suitable for the working condition that the tested part 7 is provided with intersecting holes, the intersecting holes are orthogonal or oblique, the installation of the pressure measuring rod 6 is realized through the interlocking connection of the locking rod 2 and the pressure measuring rod 6, the sealing performance of the device is ensured by the arranged first O-shaped sealing ring 3 and the second O-shaped sealing ring 4, the locking rod 2 and the pressure measuring rod 6 are inserted into the holes, and even if the outer end face of the holes is irregularly shaped, the installation is not influenced.
The invention is equally applicable to the case where the outer end face of the hole is planar. Taking the outer end surface of the hole a 71 as a plane as an example, the preferred assembly mode of the first O-ring 3 is that the first O-ring 3 is arranged at the outer end surface of the hole a 71, the first O-ring 3 is fixed by the sealing gland 1, the sealing gland 1 can be directly welded with the locking rod 2 or processed into an integral structure, and for convenient processing and assembly, the invention adopts the threaded connection of the sealing gland 1 and the outer end of the locking rod 2. Taking the outer end face of the B hole 72 as a plane as an example, the preferred assembly mode of the second O-ring 4 is that the second O-ring 4 is arranged at the outer end face of the B hole 72, the second O-ring 4 is fixed by sealing the pressure measuring end cover 5, the sealing pressure measuring end cover 5 is in threaded connection with the outer end of the pressure measuring rod 6, and the sealing pressure measuring end cover 5 is provided with an interface matched with the pressure measuring meter. The connection interface at the outer end of the pressure measuring rod 6 is generally provided as an L-shaped cavity flow channel, and the pressure measuring meter interface of the sealing pressure measuring end cover 5 can be designed at the protruding top end 51 of the sealing pressure measuring end cover 5 or on the flange surface 52 of the sealing pressure measuring end cover 5. The pressure gauge and water inlet pipe interface is usually formed on the flange surface 51 of the sealed pressure measuring end cover 5, for example, the space is limited due to the smaller pipe diameter, and the hole can be formed at the raised top end 51 of the sealed pressure measuring end cover 5, so that the connection port for connecting the pressure gauge and the water pipe is not required to be designed at other positions as is the normal case.
Taking the hole A71 as an example when the outer end surface of the hole is irregular, the preferable assembly mode of the first O-shaped sealing ring 3 is that the first O-shaped sealing ring 3 is arranged at the inner wall of the hole A71, the side wall of the locking rod 2 is provided with a first step 21 for positioning the inner end of the first O-shaped sealing ring 3, and the first O-shaped sealing ring 3 is fixed through a locking stud 8; the locking stud 8 is fixed by being directly connected with the outer end of the locking rod 2 in a threaded manner or by being connected with the outer end of the locking rod 2 in a threaded manner through the locking nut 9 or by a combination of the two threaded connections. The invention is fixed by the combination of the two threaded connections, namely that the locking stud 8 is in threaded connection with the locking rod 2, and the locking nut 9 is in threaded connection with the outer end of the locking rod 2. If the outer end surface of the B hole 72 is also irregular, the second O-ring 4 may be mounted in the same manner as the first O-ring 3 described above.
The interlocking connection of the locking rod 2 and the pressure measuring rod 6 can be that an external thread is arranged on the locking rod 2, a threaded hole is arranged on the pressure measuring rod 6, or that a threaded hole is arranged on the locking rod 2 and an external thread is arranged on the pressure measuring rod 6. In order to ensure structural stability, the invention adopts the structure that the inner end of the locking rod 2 is matched and connected with a threaded hole on the pressure measuring rod 6 through external threads. In addition, for convenient assembly, the side wall of the locking rod 2 is provided with a second step 22, and one side end surface of the second step 22 is contacted with the pressure measuring rod 6 to realize the connection positioning of the locking rod 2 and the pressure measuring rod 6. The threaded hole on the pressure measuring rod 6 is provided with a counter sinking hole which is matched with the second step 22 of the locking rod 2 at one end facing the locking rod 2.
The invention meets the structure and test requirements of the tested part 7 during the adaptive design and manufacture. The whole structural layout and strength, and the performance and structural design of each part should meet the pressure and sealing requirements of the test system, so that the test safety is ensured.
The sealing pressure measuring structure can select the existing hole of the original of the measured part 7, and can also use the auxiliary pressure measuring tool connected with the measured part 7 or the hole on other tools.
Embodiment one:
as shown in fig. 1 to 3, the measured component 7 is provided with a hole 71 and a hole 72, the hole 71 and the hole 72 are intersecting holes which are orthogonally arranged, the included angle between the locking rod 2 and the pressure measuring rod 6 is a right angle, and the outer end surfaces of the hole 71 and the hole 72 are planes.
A hole 71 is internally provided with a locking rod 2, a B hole 72 is internally provided with a pressure measuring rod 6, and the locking rod 2 and the pressure measuring rod 6 are in threaded connection at the junction of the A hole 71 and the B hole 72. The side wall of the locking rod 2 is provided with a second step 22, and one side end surface of the second step 22 is contacted with the pressure measuring rod 6 to realize the connection positioning of the locking rod 2 and the pressure measuring rod 6. The threaded hole on the pressure measuring rod 6 is provided with a counter sinking hole which is matched with the second step 22 of the locking rod 2 at one end facing the locking rod 2.
The first O-shaped sealing ring 3 is arranged at the outer end face of the A hole 71, the first O-shaped sealing ring 3 is fixed through the sealing gland 1, the sealing gland 1 is in threaded connection with the outer end of the locking rod 2, the sealing gland 1 is screwed down to the required moment, the first O-shaped sealing ring 3 achieves the required compression amount, and the required sealing effect is achieved. The second O-shaped sealing ring 4 is arranged at the outer end face of the B hole 72, the second O-shaped sealing ring 4 is fixed through the sealing pressure measuring end cover 5, the sealing pressure measuring end cover 5 is in threaded connection with the outer end of the pressure measuring rod 6, and an interface matched with the pressure measuring gauge is arranged on the sealing pressure measuring end cover 5. The sealing pressure measuring end cover 5 is screwed down to the required moment, and the second O-shaped sealing ring 4 achieves the required compression amount and the required sealing effect. The pressure gauge and water inlet pipe interface is usually formed on the flange surface 51 of the sealed pressure measuring end cover 5, for example, the space is limited due to the smaller pipe diameter, and the hole can be formed at the raised top end 51 of the sealed pressure measuring end cover 5, so that the connection port for connecting the pressure gauge and the water pipe is not required to be designed at other positions as is the normal case.
Embodiment two:
As shown in fig. 4 to 6, the measured component 7 is provided with a hole 71 and a hole 72, the hole 71 and the hole 72 are intersecting holes which are arranged in an oblique manner, an included angle between the locking rod 2 and the pressure measuring rod 6 is an acute angle, the outer end face of the hole 71 is in an irregular shape, and the outer end face of the hole 72 is a plane.
A hole 71 is internally provided with a locking rod 2, a B hole 72 is internally provided with a pressure measuring rod 6, and the locking rod 2 and the pressure measuring rod 6 are in threaded connection at the junction of the A hole 71 and the B hole 72.
The first O-shaped sealing ring 3 is arranged at the inner wall of the A hole 71, a first step 21 for positioning the inner end of the first O-shaped sealing ring 3 is arranged on the side wall of the locking rod 2, and the outer end of the first O-shaped sealing ring 3 is fixed through a locking stud 8; the locking stud 8 is fixed with the outer end of the locking rod 2 through the locking nut 9 in a threaded connection mode, the locking nut 9 is screwed down to a required torque, and the first O-shaped sealing ring 3 achieves a required compression amount and a required sealing effect. The second O-shaped sealing ring 4 is arranged at the outer end face of the B hole 72, the second O-shaped sealing ring 4 is fixed through the sealing pressure measuring end cover 5, the sealing pressure measuring end cover 5 is in threaded connection with the outer end of the pressure measuring rod 6, and an interface matched with the pressure measuring gauge is arranged on the sealing pressure measuring end cover 5. The sealing pressure measuring end cover 5 is screwed down to the required moment, and the second O-shaped sealing ring 4 achieves the required compression amount and the required sealing effect. The pressure gauge and water inlet pipe interface is usually formed on the flange surface 51 of the sealed pressure measuring end cover 5, for example, the space is limited due to the smaller pipe diameter, and the hole can be formed at the raised top end 51 of the sealed pressure measuring end cover 5, so that the connection port for connecting the pressure gauge and the water pipe is not required to be designed at other positions as is the normal case.
The invention effectively solves the pressure measurement problems of the prior parts with irregular shapes and the parts not suitable for the traditional blind plate parts fixed by bolts, completes the design and production of the sealing pressure measurement structure with simple structure, good stability and integrated functions of compression, sealing, pressure measurement and the like, effectively improves the working efficiency and shortens the test preparation process. When meeting the pressure measurement requirements of the petrochemical engineering complete valve and related parts, the control of various parts of a water system fluid pipeline, the general hydraulic cylinder and various parts of the hydraulic system, the sealing pressure measurement structure has great practical value and can be widely popularized and applied.
Claims (8)
1. The utility model provides a sealed pressure measurement structure, is applicable to the outer terminal surface of hole and is the non-planar irregular shape, including being surveyed part (7), be provided with A hole (71) and B hole (72) on being surveyed part (7), A hole (71) and B hole (72) are the intersecting cross hole of skew, its characterized in that: a locking rod (2) is inserted into the hole A (71), a pressure measuring rod (6) is inserted into the hole B (72), and the locking rod (2) and the pressure measuring rod (6) are in threaded connection at the junction of the hole A (71) and the hole B (72); a first O-shaped sealing ring (3) is arranged on the sealing surface between the locking rod (2) and the hole A (71), and a second O-shaped sealing ring (4) is arranged on the sealing surface between the pressure measuring rod (6) and the hole B (72); the outer end of the pressure measuring rod (6) is provided with a connecting interface which is communicated with the inner cavity of the measured component (7).
2. The sealed pressure measurement structure of claim 1, wherein: the first O-shaped sealing ring (3) is arranged at the inner wall of the A hole (71), a first step (21) for positioning the inner end of the first O-shaped sealing ring (3) is arranged on the side wall of the locking rod (2), and the first O-shaped sealing ring (3) is fixed through the locking stud (8); the locking stud (8) is directly connected with the outer end of the locking rod (2) through threads, or is connected with the outer end of the locking rod (2) through a locking nut (9) through threads, or is connected with the outer end of the locking rod through a combination of the two threads.
3. The sealed pressure measurement structure of claim 2, wherein: the second O-shaped sealing ring (4) is arranged at the inner wall of the B hole (72), and the second O-shaped sealing ring (4) adopts the same installation structure as the first O-shaped sealing ring (3).
4. The sealed pressure measurement structure of claim 2, wherein: the second O-shaped sealing ring (4) is arranged at the outer end face of the B hole (72), the second O-shaped sealing ring (4) is fixed through the sealing pressure measuring end cover (5), the sealing pressure measuring end cover (5) is in threaded connection with the outer end of the pressure measuring rod (6), and an interface matched with the pressure measuring meter is arranged on the sealing pressure measuring end cover (5).
5. The sealed pressure measurement structure of claim 4, wherein: the pressure meter interface of the sealing pressure measuring end cover (5) is designed at the protruding top end (51) of the sealing pressure measuring end cover (5) or on the flange surface (52) of the sealing pressure measuring end cover (5).
6. A sealed load cell structure according to any one of claims 1 to 5, wherein: the inner end of the locking rod (2) is connected with a threaded hole on the pressure measuring rod (6) in a matched manner through external threads.
7. The sealed pressure measurement structure of claim 6, wherein: the side wall of the locking rod (2) is provided with a second step (22), and one side end surface of the second step (22) is contacted with the pressure measuring rod (6) to realize the connection positioning of the locking rod (2) and the pressure measuring rod (6).
8. The sealed pressure measurement structure of claim 7, wherein: the threaded hole on the pressure measuring rod (6) is provided with a counter sinking hole which is matched with the second step (22) of the locking rod (2) at one end facing the locking rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592416.1A CN109443634B (en) | 2018-12-25 | 2018-12-25 | Sealing pressure measuring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592416.1A CN109443634B (en) | 2018-12-25 | 2018-12-25 | Sealing pressure measuring structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109443634A CN109443634A (en) | 2019-03-08 |
| CN109443634B true CN109443634B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811592416.1A Active CN109443634B (en) | 2018-12-25 | 2018-12-25 | Sealing pressure measuring structure |
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