Inner pressure sealed type screwed joint
A threaded joint and sealing technology, which is applied in the direction of threaded connection, pipe/pipe joint/pipe fitting, passing components, etc., can solve the problems of high labor intensity, unreliable sealing, and easy damage of thread, etc., and achieve low labor intensity, The sealing effect is reliable and not easy to damage
Inactive Publication Date: 2009-06-17
无锡昌华机电制造有限公司
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Problems solved by technology
This method has the following four disadvantages: 1. High labor intensity; 2. Unreliable sealing; 3. Low operating efficiency; 4. The inner thread of the container inlet and outlet is easily damaged
Method used
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[0010] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:
[0011] Such as figure 1 As shown, it includes hollow rod 1, U-shaped insert 2, gasket 3, elastic sealing washer 4, threaded joint 5, two-piece sealing gasket 6, nut 7, rotary threaded joint 8, four-piece screw 9, thrust ball bearing 10 and fixed disk 11 etc.
[0012] The lower end of the hollow rod 1 of the present invention has a raised step, and the upper end is an internal thread interface. The U-shaped insert 2 is stuck on the raised step at the lower end of the hollow rod 1, which is convenient for loading and unloading. The gasket 3 and the elastic sealing washer 4 are located between the U-shaped insert 2 and the lower surface of the threaded joint 5, and the outer diameters of the elastic sealing washer 4, the gasket 3, and the U-shaped insert 2 are all smaller than the inner diameter of the inner thread of the container inlet and outlet. Sm...
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The invention relates to an internal pressure sealing type screwed nipple which is particularly used for the sealing and the connection with an inlet or an outlet of a container. The invention belongs to the technical field of sealing devices, and is characterized in that the internal pressure sealing type screwed nipple comprises hollow bars, a U-shaped film threading card is arranged on a projected step at the lower end of the hollow bar, a gasket and an elastic sealing washer are positioned between the U-shaped film threading card and the lower surface of the screwed nipple, the external threads at the upper end of the screwed nipple are matched with a screw nut, the internal threads at the upper end of the screwed nipple are matched with the external threads at the lower end of a convolution screwed nipple, ball thrust bearings are arranged in the convolution screwed nipple and between the hollow bars, a fixing disc is fixed with the convolution screwed nipple, through holes are arranged in the screwed nipples, and the hollow bars penetrate through the screwed nipple. The invention has the advantages of simple, compact and reasonable structure, convenient operation, low labor intensity, high operation efficiency, difficult damage of the internal threads of the inlet and the outlet of the container, and reliable sealing effect.
Description
technical field [0001] The invention relates to an internal pressure-sealed threaded joint, specifically used for sealing connection with the inlet and outlet of a container, and belongs to the technical field of sealing devices. Background technique [0002] At present, when carrying out various methods of pressurization tests on pressure vessels, the sealing method between the threaded joints used in the test equipment and the internal threads at the inlet and outlet of the container is usually to wrap a raw material tape or Apply sealant, and then tighten the threaded joint to meet the sealing requirements. After the test is completed, the threaded joint for the test needs to be loosened vigorously. This method has the following four disadvantages: 1. The labor intensity is high; 2. The seal is unreliable; 3. The operation efficiency is low; 4. The inner thread of the container inlet and outlet is easily damaged. Contents of the invention [0003] The purpose of the p...
Claims
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Inventor 丁大为龙志强贾品华
Owner 无锡昌华机电制造有限公司