CN220770443U - Length-adjustable pressure test false valve - Google Patents
Length-adjustable pressure test false valve Download PDFInfo
- Publication number
- CN220770443U CN220770443U CN202322608322.1U CN202322608322U CN220770443U CN 220770443 U CN220770443 U CN 220770443U CN 202322608322 U CN202322608322 U CN 202322608322U CN 220770443 U CN220770443 U CN 220770443U
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- flange plate
- pressure test
- valve
- flange
- length
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- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 abstract description 8
- 238000009417 prefabrication Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a length-adjustable pressure test false valve, which comprises a first flange plate and a second flange plate, wherein the circle centers of the first flange plate and the second flange plate are positioned on the same horizontal line, three lug plates which are uniformly distributed in the circumferential direction are welded on the circumferential side walls of the first flange plate and the second flange plate respectively, the lug plates of the first flange plate and the lug plates of the second flange plate are oppositely arranged one by one in the horizontal direction, screw rods are respectively arranged between every two lug plates which are oppositely arranged, the two lug plates are fixed on the screw rods through fasteners, concentric circle through holes are formed in the first flange plate and the second flange plate respectively, and the two concentric circle through holes are communicated through a hose with adjustable length. The pressure test dummy valve provided by the utility model has the advantages that the length of the pressure test dummy valve is adjustable by changing the distance between the first flange plate and the second flange plate, the pressure test dummy valve can be used as a substitute valve for valves with various lengths, the universality of the dummy valve is enhanced, the recycling rate is improved, and the material cost and the prefabrication cost of the pressure test dummy valve are greatly reduced.
Description
Technical Field
The utility model relates to the field of pressure test of marine engineering and chemical engineering module pipelines, in particular to a pressure test dummy valve with adjustable length.
Background
When the marine industry is in pressure test and purging of pipelines, instrument parts such as check valves, control valves, expansion joints, flow meters and the like can be damaged, or part of hand valves are in late arrival, so that dummy valves are needed to replace the valves before resetting. The main functions of the dummy valve are as follows: firstly, a dummy valve is used in an installation stage to occupy a space, so that a pipeline can be accurately positioned, an accurate installation space is reserved for the reinstallation of a future valve, and an accurate installation gap is reserved for a limit bracket near the valve; secondly, when the broken line of the pressure test bag is in a discontinuous state due to the dismantling or missing of the valve, the false valve can be communicated and broken to test the pressure, so that the influence on the pressure test is reduced.
Referring to fig. 1, the prior art generally adopts a dummy valve welded by flanges and pipelines with the same specification as the original valve, the length of the dummy valve is required to be manufactured according to the replaced valve in a one-to-one mode, the diameters, the wall thicknesses, the pressure levels and the material types of the flange and the pipeline are required to be consistent with those of the replaced valve, however, due to the fact that the types of the valves in projects are various, the specification lengths of the valves are different, the reuse rate of the custom dummy valve in the same project is very low, only about 40%, and the reuse rate in different projects is lower, so that a large number of flanges and pipelines are required to be purchased to manufacture the dummy valve with different specifications, and the material cost and the prefabrication cost of the dummy valve are high. Therefore, the pressure test dummy valve with the adjustable length is urgently needed, and the purposes of greatly improving the repeated utilization rate of the dummy valve and greatly reducing the overall cost of the pressure test dummy valve are achieved.
Disclosure of Invention
The length-adjustable pressure test false valve is mainly used for solving the problems of low repeated utilization rate, high material cost, high prefabrication cost and the like of the traditional pressure test false valve, thereby achieving the effects of enhancing the universality of the false valve, improving the repeated utilization rate and greatly reducing the material cost and the prefabrication cost of the false valve.
The utility model realizes the above purpose through the following technical scheme:
the utility model provides a length adjustable pressure test false valve, includes that the centre of a circle is located first ring flange and the second ring flange on same horizontal line, the welding has three otic placode at circumference evenly distributed on the circumference lateral wall of first ring flange and second ring flange respectively, the otic placode of first ring flange and second ring flange set up relatively one by one in the horizontal direction, and per two relatively set up respectively be equipped with the screw rod between the otic placode, two the otic placode passes through the fastener to be fixed on the screw rod, thereby through the regulation level two the length of pressure test false valve is changed to the distance between the otic placode, concentric circle through-hole that all offered on first ring flange and the second ring flange, two through a length adjustable hose intercommunication between the concentric circle through-hole.
According to the further scheme, the first flange plate and the second flange plate adopt flange blind plates with the same structure.
Further, the mounting holes are formed in the lug plates, two ends of the screw rod penetrate through the two mounting holes of the lug plates, which are arranged horizontally and oppositely, of the first flange plate and the second flange plate respectively, and two sides of the lug plates are fixed on the screw rod through fastening nuts respectively.
The further scheme is that the surfaces of the two concentric circle through holes are respectively provided with internal threads, and two ends of the hose are respectively provided with external threads which are coupled with the internal threads on the surfaces of the concentric circle through holes and are used for connecting the concentric circle through holes with the hose in a threaded manner.
The diameter of the concentric circle through hole and the diameter of the hose are set according to the valve flow and the pressure grade of the pressure test false valve.
The length of the hose is larger than or equal to the linear distance between the first flange plate and the second flange plate.
According to the further scheme, the first flange plate is tightly connected with the flange plate at the fracture of the upstream pipeline through bolts, and the second flange plate is tightly connected with the flange plate at the fracture of the downstream pipeline through bolts, so that the communication between the upstream pipeline and the downstream pipeline is realized.
Further, the linear distance between the first flange plate and the second flange plate is set according to the linear distance between the upstream pipeline fracture and the downstream pipeline fracture.
The utility model realizes the above purpose through the following technical scheme:
it can be seen that the utility model has the following beneficial effects:
1. according to the pressure test dummy valve, the distance between the first flange plate and the second flange plate is changed by changing the fixed position of the lug plate on the screw rod, and meanwhile, the flexible pipes with corresponding lengths are used for communicating the first flange plate and the second flange plate, so that the length of the pressure test dummy valve is adjustable;
2. the pressure test false valve has a simple structure, the hose is connected with the flange by screw threads, and compared with the traditional mode of welding the flange and a pipeline, the pressure test false valve has the advantages that the length is easy to adjust, and the material cost and the prefabrication cost of the pressure test false valve are greatly reduced;
3. the pressure test dummy valve can be used for connecting a pipeline to be disconnected, when the original valve is dismantled to cause the pipeline to be disconnected to form the disconnection, the pressure test dummy valve can be connected with the pipelines at two ends of the valve in series, and a medium can flow into a flange threaded hole of the pressure test dummy valve from an upstream pipeline of the valve and then flow into a hose and then flow into a flange hole at the other side of the pressure test dummy valve until reaching a downstream pipeline, so that the influence on pressure test is reduced;
4. the pressure test dummy valve reserves accurate space for the reinstallation of the original valve, and the original valve can be installed in a seamless mode after the pressure test dummy valve is removed according to the fact that the length of the pressure test dummy valve is identical to that of the original valve.
The utility model is described in further detail below with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic illustration of a prior art dummy valve welded to a flange and a pipeline.
FIG. 2 is a schematic diagram of a pressure test dummy valve of the present utility model.
Fig. 3 is a schematic structural view of a first flange plate and a second flange plate according to the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.
Length-adjustable pressure test false valve embodiment
Referring to fig. 2, the pressure test dummy valve with adjustable length according to the present utility model includes a first flange plate 10 and a second flange plate 20 with centers on the same horizontal line, three ear plates 13 uniformly distributed in the circumferential direction are welded on the circumferential side walls of the first flange plate 10 and the second flange plate 20, the ear plates 13 of the first flange plate 10 and the ear plates 13 of the second flange plate 20 are oppositely arranged one by one in the horizontal direction, a screw 40 is respectively provided between each two oppositely arranged ear plates 13, the two ear plates 13 are fixed on the screw 40 through fasteners 50, the length of the pressure test dummy valve is changed by adjusting the distance between the horizontally opposite two ear plates 13, and the two concentric circular through holes 12 are communicated through a length adjustable hose 30.
Specifically, the pressure test dummy valve in this embodiment is used as a substitute for valves/meters of the same caliber, the same pressure grade, the same type of material and various lengths, and because the flange sealing surface can only be matched with the flange of the same caliber and the same pressure grade, and alloy steel and carbon steel are mixed to form a primary cell effect during pressure test to accelerate corrosion, the pressure test dummy valve can only substitute for valves of the same caliber, the same pressure grade and the same type of material, but because the length of the pressure test dummy valve is adjustable, the pressure test dummy valve can be used as a substitute for valves/meters of various lengths.
Referring to fig. 3, in the present embodiment, the first flange plate 10 and the second flange plate 20 use a flange blind plate 11 having the same structure.
Specifically, the center of the blind flange 11 in this embodiment is drilled with a concentric through hole 12 with internal threads, and the diameter of the concentric through hole 12 can be selected according to actual needs.
In this embodiment, the ear plates 13 are provided with mounting holes 14, two ends of the screw 40 respectively penetrate through the mounting holes 14 of two ear plates 13 horizontally opposite to the first flange plate 10 and the second flange plate 20, and two sides of the ear plates 13 are respectively fixed on the screw 40 through fastening nuts.
Specifically, the fastener 50 of this embodiment includes an inner nut 51 and a locking nut 52, the inner nut 51 is disposed inside two oppositely disposed ear plates 13, 6 inner nuts 51 are rotated to completely fit the surfaces of the ear plates, the locking nut 52 is disposed outside the ear plates 13, and 6 locking nuts are rotated to completely fit the surfaces of the ear plates and fix the ear plates, so that the length of the pressure test dummy valve is adjusted.
In this embodiment, the surfaces of the two concentric through holes 12 are provided with internal threads, and both ends of the hose 30 are respectively provided with external threads coupled with the internal threads of the surfaces of the concentric through holes 12, so that the concentric through holes 12 are in threaded connection with the hose 30.
Specifically, the two ends of the hose 30 of this embodiment are provided with connectors 31, and the connectors 31 are used for tightly connecting the hose 30 with the first flange plate 10 and the second flange plate 20.
In the present embodiment, the diameter of the concentric circular through hole 12 and the diameter of the hose 30 are set according to the valve flow rate and the pressure level of the pressure test dummy valve.
Specifically, the calculation formula of the valve flow in this embodiment is as follows:
Q＝Kv*Sqrt(ΔP/ρ)
wherein Q is flow, kv is flow coefficient of the valve, deltaP is pressure difference of two sides of the valve, and ρ is medium density. Generally, large flow pipes require a larger diameter of concentric circular through holes 12 and the diameter of hose 30.
In the present embodiment, the length of the hose 30 is equal to or longer than the linear distance between the first flange plate 10 and the second flange plate 20.
Specifically, the hose of this embodiment is selected from stainless steel hose, metal hose, corrugated hose, rubber hose, plastic hose, etc. according to practical application.
Specifically, in this embodiment, since the hose 30 has a certain elasticity and repeated flexibility, even if the length of the hose 30 is longer than the linear distance between the first flange 10 and the second flange 20, the use is not affected, so that the same pressure test dummy valve can still be applied to the occasion with slightly different valve lengths, and the repeated utilization rate is higher.
In this embodiment, the first flange 10 is tightly connected to the flange at the fracture of the upstream pipeline by bolts, and the second flange 20 is tightly connected to the flange at the fracture of the downstream pipeline by bolts, so as to realize the communication between the upstream pipeline and the downstream pipeline.
In the present embodiment, the linear distance between the first flange plate 10 and the second flange plate 20 is set according to the linear distance between the upstream line break and the downstream line break.
Specifically, in this embodiment, after the upstream pipeline of the original valve is installed, the first flange 10 and the gasket are fixed on the upstream pipeline by at least 4 bolts, and then the second flange 20 and the gasket are fixed on the downstream pipeline by at least 4 bolts, so as to realize the communication between the upstream pipeline and the downstream pipeline.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (8)
1. A length-adjustable pressure test dummy valve, comprising:
the center of a circle is located first ring flange and the second ring flange on same horizontal line, the circumference lateral wall of first ring flange and second ring flange is last to be welded respectively has three otic placode at circumference evenly distributed, the otic placode of first ring flange and the otic placode of second ring flange set up relatively one by one in the horizontal direction, and per two relatively set up be equipped with the screw rod between the otic placode respectively, two the otic placode passes through the fastener to be fixed on the screw rod, thereby through the regulation level two thereby change the length of pressure test false valve between the otic placode, concentric circle through-hole that all offered on first ring flange and the second ring flange, two through the hose intercommunication of a length adjustable between the concentric circle through-hole.
2. The adjustable length pressure test dummy valve of claim 1, wherein:
the first flange plate and the second flange plate adopt flange blind plates with the same structure.
3. The adjustable length pressure test dummy valve of claim 1, wherein:
the mounting holes are formed in the lug plates, two ends of the screw rod penetrate through the two mounting holes of the lug plates, which are arranged horizontally and oppositely, of the first flange plate and the second flange plate respectively, and two sides of the lug plates are fixed on the screw rod through fastening nuts respectively.
4. The adjustable length pressure test dummy valve of claim 1, wherein:
the two concentric circle through holes are provided with internal threads, and two ends of the hose are respectively provided with external threads which are coupled with the internal threads on the surfaces of the concentric circle through holes and are used for threaded connection of the concentric circle through holes and the hose.
5. The adjustable length pressure test dummy valve of claim 4, wherein:
the diameter of the concentric circle through hole and the diameter of the hose are set according to the valve flow and the pressure grade of the pressure test false valve.
6. The adjustable length pressure test dummy valve of claim 5, wherein:
the length of the hose is greater than or equal to the linear distance between the first flange plate and the second flange plate.
7. The adjustable length pressure test dummy valve according to any one of claims 1-6, wherein:
the flange plate at the fracture of the first flange plate and the upstream pipeline are tightly connected through bolts, and the flange plate at the fracture of the second flange plate and the downstream pipeline are tightly connected through bolts, so that the communication between the upstream pipeline and the downstream pipeline is realized.
8. The adjustable length pressure test dummy valve of claim 7, wherein:
the linear distance between the first flange plate and the second flange plate is set according to the linear distance between the upstream pipeline fracture and the downstream pipeline fracture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322608322.1U CN220770443U (en) | 2023-09-25 | 2023-09-25 | Length-adjustable pressure test false valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322608322.1U CN220770443U (en) | 2023-09-25 | 2023-09-25 | Length-adjustable pressure test false valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220770443U true CN220770443U (en) | 2024-04-12 |
Family
ID=90621597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322608322.1U Active CN220770443U (en) | 2023-09-25 | 2023-09-25 | Length-adjustable pressure test false valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220770443U (en) |
-
2023
- 2023-09-25 CN CN202322608322.1U patent/CN220770443U/en active Active
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