High-pressure multiple-stage centrifugal pump housing pressuring tool
A centrifugal pump and tooling technology, which is applied to components, pumps, and pump control of elastic fluid pumping devices. It can solve the problems of harming the personal safety of workers, high test pressure, etc., and achieve improved safety factors and strengthened bearings. The effect of pressure
Inactive Publication Date: 2015-03-25
LIAONING CHANGZHI PUMP
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Problems solved by technology
Since the design pressure of the high-pressure multi-stage centrifugal pump is very high, the outlet and inlet flanges of the pump are also designed according to high pressure, so when the outlet and inlet are blocked with double-headed studs, it can be guaranteed to withstand the test pressure; In the case where the pressure at the mechanical seal is not high, the specification and quantity of threaded holes on the pump casing at the connection port of the mechanical seal are designed according to conventional standards. If only such a few threaded holes are used for hydrostatic pressure testing, It is difficult to ensure that it can withstand the high test pressure. Once the nut is broken during the test, it may seriously damage the personal safety of the staff.
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[0009] In the accompanying drawings, the present invention is a high-pressure multi-stage centrifugal pump shell pressing tool, which is mainly composed of cap nuts, threaded studs, outlet plugs, inlet plugs, glands, double-ended studs, and nuts. ; It is characterized in that: a through hole is provided at the center of the gland 6 that blocks the mechanical seal interface at both ends, and the through hole is pierced with a threaded stud 2 that tightly presses the gland 6 at both ends to the mechanical seal interface, and the threaded bar Two cap nuts 1 are screwed at both ends of the stud 2 . When pressing, the outlet plug 4 and the inlet plug 5 block the outlet and inlet of the pump casing 3; the mechanical seal interface at both ends is blocked with a stud 7, a nut 8 and a gland 6; The overpressure cover 6 and the pump casing 3 are tightened with cap nuts 1 at both ends. According to the test pressure, select the specification and quantity of the threaded studs.
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The invention discloses a high-pressure multiple-stage centrifugal pump housing pressuring tool. The high-pressure multiple-stage centrifugal pump housing pressuring tool is mainly composed of cover-shaped nuts, a through stud, an outlet plug, an inlet plug, press covers, a double-end stud and nuts and is characterized in that through holes are formed in the centers of the press covers of mechanical sealing interfaces of the plugs at two ends, the through stud tightly pressing the press covers at two ends at the positions of the mechanical sealing interfaces penetrates through the through hole, and two cover-shaped nuts are screwed at two ends of the through stud. Due to the fact that the through stud penetrates through the press covers and is screwed by the cover-shaped nuts, the bearing capacity at the mechanical sealing positions is improved by utilizing the through stud, the security coefficient of high-pressure multiple-stage centrifugal pump hydrostatic testing is improved, safe and smooth hydrostatic testing is ensured, and it is ensured that a pump body pressuring device is safe and reliable.
Description
1. Technical field [0001] The invention relates to the technical field of mechanical engineering pumps, in particular to a high-pressure multistage centrifugal pump shell pressing tool. 2. Background technology [0002] At present, the casing pressure tooling of high-pressure multistage centrifugal pumps in my country is to seal the inlet and outlet of the pump and the mechanical seal connection ports at both ends with plugging, and the plugging is connected to the casing with studs. Since the design pressure of the high-pressure multi-stage centrifugal pump is very high, the outlet and inlet flanges of the pump are also designed according to high pressure, so when the outlet and inlet are blocked with double-headed studs, it can be guaranteed to withstand the test pressure; In the case where the pressure at the mechanical seal is not high, the specification and quantity of threaded holes on the pump casing at the connection port of the mechanical seal are designed according...
Claims
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IPC IPC(8): F04D15/00
CPCF04D29/605
Inventor 左传玺王中升周宏魏红满韦尚鹏
Owner LIAONING CHANGZHI PUMP