A kind of multistation valve pressure testing device
Technical field
The utility model relates to a kind of pressure testing device, particularly a kind of multistation valve pressure testing device.
Background technology
At present, along with at home and abroad flourish of pipeline construction, corresponding industrial valve equipment Ye You, is constantly applied on gas field, and the quality of valve directly affects the quality of engineering, therefore to the quality of valve, need to be rigid in checking up.Although valve manufacturing factory before dispatching from the factory has carried out strength test and leak test, establishing criteria requirement, applying unit also tackles that valve is inspected by random samples or inspection entirely.
Before valve dispatches from the factory, manufacturer checks by special-purpose pressure tester, and there is no special pressure testing device in the working-yard of applying unit.Applying unit is normally docked with valve in the auxiliary pressure testing section of each prefabricated joint of flange front end at valve two ends at present, then valve is carried out to pressure testing, difference due to valve nominal diameter and nominal pressure, the supporting flange size of different valves differs, so all must make two of different auxiliary pressure testing sections for the valve of every kind of nominal pressure and nominal diameter, cause material, artificial input greatly and be not easy to management.In pressure testing process, also need whole device to fixedly secure, guarantee pressure testing safety, and the dismounting of the set bolt of valve and flange is comparatively loaded down with trivial details, causes to a certain extent the delay of duration.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, and a kind of multistation valve pressure testing device is provided, simple in structure, easy to use, can carry out pressure testing to the valve of plurality of specifications, the input using manpower and material resources sparingly.
For solving above technical matters, a kind of multistation valve pressure testing device of the present utility model, comprise the cylindrical shell being supported on bracket, described cylindrical shell two ends are provided with the end socket of its sealing, the top of described cylindrical shell is connected with respectively upper water interface, emptying interface and pressure gauge connection along cylindrical shell length direction, and the bottom of described cylindrical shell is provided with drainage interface; On described upper water interface, water supply valve is installed, on described emptying interface, exhaust-valve is installed, on described pressure gauge connection, tensimeter is installed, on described drainage interface, draining valve is installed; The both sides of described cylindrical shell are connected with and suppress interface and a plurality of value pressure test interface along cylindrical shell length direction, and described in each, the flange of value pressure test interface is suitable with the flange for the treatment of pressure testing valve respectively.
With respect to prior art, the utility model has been obtained following beneficial effect: by high-pressure hose, will suppress interface and be connected to pressure testing delivery side of pump, in the time of need to testing the valve of certain specification, by this valve installation, on the flange of same specification value pressure test interface, other value pressure test interface adopts blind plate sealing or valve corresponding to their specifications is installed; Open water supply valve and will in cylindrical shell, fill with water, air in cylindrical shell is discharged by exhaust-valve, after air drains, close water supply valve and exhaust-valve, by test pump, to continuing water filling in cylindrical shell, cylinder internal pressure is slowly raise, by tensimeter, observe force value, by pressure testing requirement boost, pressurize tests to valve; After one side pressure testing of valve, test pump stops pump water, opens draining valve and carries out release, draining, turns valve direction and can test according to said procedure the sealing property of valve opposite side.
As preferred version of the present utility model, the nominal pressure of the flange of described value pressure test interface is PN2.5 or PN11.0, and nominal diameter comprises DN25, DN50, DN100, DN150, DN200, DN250 and DN300.More than comprised the regular size of valve in practice of construction.
As preferred version of the present utility model, described in each, the below of value pressure test interface is respectively equipped with valve base, and the bottom level after height of valve base is connected in respective flange with valve to be checked respectively described in each is suitable.For each value pressure test interface kit valve base, valve rests on valve base, and the flange of the flange of valve and value pressure test interface is positioned on sustained height, is convenient to complete fast connection, improves pressure testing efficiency.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.
Fig. 1 is the front view of the utility model multistation valve pressure testing device.
Fig. 2 is the vertical view of Fig. 1.
In figure: 1. cylindrical shell; 2. end socket; 3. bracket; 4. go up water interface; 5. tensimeter; 6. emptying interface; 7. drainage interface; 8. the first value pressure test interface; 9. the second value pressure test interface; 10. the 3rd value pressure test interface; 11. the 4th value pressure test interfaces; 12. the 5th value pressure test interfaces; 13. the 6th value pressure test interfaces; 14. the 7th value pressure test interfaces; 15. suppress interface.
Embodiment
As depicted in figs. 1 and 2, multistation valve pressure testing device of the present utility model, comprise the cylindrical shell 1 being supported on bracket 3, cylindrical shell 1 two ends are provided with the end socket of its sealing 2, the top of cylindrical shell 1 is connected with respectively upper water interface 4, emptying interface 6 and pressure gauge connection along cylindrical shell length direction, and the bottom of cylindrical shell 1 is provided with drainage interface 7; On upper water interface 4, water supply valve is installed, on emptying interface 6, exhaust-valve is installed, tensimeter 5 is installed on pressure gauge connection, on drainage interface 7, draining valve is installed; The both sides of cylindrical shell 1 are connected with and suppress interface 15, the first value pressure test interface 8, the second value pressure test interface 9, the 3rd value pressure test interface 10, the 4th value pressure test interface 11, the 5th value pressure test interface 12, the 6th value pressure test interface 13, the 7th value pressure test interface 14 along cylindrical shell length direction.The flange of each value pressure test interface is suitable with the flange for the treatment of pressure testing valve respectively.
The nominal pressure of the flange of value pressure test interface is PN2.5 or PN11.0, PN2.5 is 2.5MPa, PN11.0 is 11.0MPa, and nominal diameter comprises DN25, DN50, DN100, DN150, DN200, DN250 and DN300, is more than the regular size in practice of construction.
The below of each value pressure test interface is respectively equipped with valve base, and the bottom level after the height of each valve base is connected in respective flange with valve to be checked is respectively suitable.After valve rests on valve base, the flange of the flange of valve and value pressure test interface is positioned on sustained height, is convenient to complete fast connection.
During pressure testing, by high-pressure hose, will suppress interface 15 and be connected to pressure testing delivery side of pump, in the time of need to testing the valve of certain specification, by this valve installation, on the flange of same specification value pressure test interface, other value pressure test interface adopts blind plate sealing or valve corresponding to their specifications is installed; Open water supply valve and will in cylindrical shell 1, fill with water, air in cylindrical shell 1 is discharged by exhaust-valve, after air drains, close water supply valve and exhaust-valve, by test pump, to continuing water filling in cylindrical shell, cylinder internal pressure is slowly raise, by tensimeter 5, observe force value, by pressure testing requirement boost, pressurize tests to valve; After one side pressure testing of valve, test pump stops pump water, opens draining valve and carries out release, draining, turns valve direction and can test according to said procedure the sealing property of valve opposite side.
The foregoing is only the better possible embodiments of the utility model, non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments, for example, according to the number of valve site specification, can have more or less value pressure test interface.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.