Pump for pressures exceeding one thousand atmospheres by the provision of a half-pressure chamber around a high pressure chamber between coned ring elements

A pump including a fluid containing inner chamber (50) formed between at least two hollow coned ring elements (1,11 or 301) and at least one closing wall portion, formed by a piston (357), subjected to periodic axial movement with axial compression and expansion of said coned ring elements by said piston (357) which is reciprocably provided in a cylinder (356) and a housing (91,306) surrounding said coned elements for forming an outer chamber (350) around said elements with fluid under pressure passed into said outer chamber at times when fluid is compressed in said inner chamber when said coned rings are compressed, with an improvement which includes that said piston is a differential piston of a small diameter and a big diameter portion with said small diameter portion forming said closing wall portion and said big diameter portion provided axially moveably and sealingly fitting in said cylinder,

• wherein a passage is provided from said cylinder to said outer chamber,
• wherein said big-diameter portion has a cross sectional area substantially twice the cross sectional area of said small diameter portion
• whereby at thrusting movement of said piston against said coned ring the pressure in said outer chamber is due to the relation of said sectional areas substantially one half of the pressure in said inner chamber,
• wherein said pump includes :
• (a) a radially flexible ringshaped seal lip portion (22) which is subjected from its inner space (clearance) (48) to pressure in said chamber (50) to be sealingly pressed against the inner face (60) of said hollow coned ring (1,11,301) while following radial movements of said inner face under said pressure radially inwardly of said seal lip portion to maintain said seal at said radial movements, and;
• (b) said pair of said hollow coned rings elements (1,11,301) with said elements symmetrically arranged around a common axis to form between said hollow elements said chamber (50) with a clamping ring arrangement provided radially outwards of said elements to fasten the radial outer ends of said elements together, wherein said clamping rings (27,28,327,328) form radially flexible ring shaped portion (42,32,332) radially inwards of circular ring grooves (29,329) to meet with the holding faces of said portions (42,32,332) clamping faces (33) on the radial outer ends of said elements (1,11,301), and, wherein said elements (1,11,301) are provided with axially towards the other of said rings (1,11,301) directed outer axial extensions (12) with said extensions (12) formed with bearing faces (13) which meet each other in a pair of bearing faces (23), while a centering ring (20) meets the radial inner faces of said extensions (12) to center said elements (1,11,301) on each other while a seal ring (26) is provided radially inwards of said centering ring (20) to seal said chamber 50.

A pump including a fluid containing inner chamber (50) formed between at least two hollow coned, ring elements (1,11 or 301) and at least one closing wall portion, formed by a piston (357), subjected to periodic axial movement with axial compression and expansion of said coned ring elements by said piston (357) which is reciprocably provided in a cylinder (356) and a housing (91,306) surrounding said coned elements for forming an outer chamber (350) around said elements with fluid under pressure passed into said outer chamber at times when fluid is compressed in said inner chamber when said coned rings are compressed, with an improvement which includes that said piston is a differential piston of a small diameter and a big diameter portion with said small diameter portion forming said closing wall portion and said big diameter portion provided axially moveably and sealingly fitting in said cylinder.

• wherein a passage is provided from said cylinder to said outer chamber,
• wherein said big-diameter portion has a cross sectional area substantially twice the cross sectional area of said small diameter portion
• whereby at thrusting movement of said piston against said coned ring the pressure in said outer chamber is due to the relation of said sectional areas substantially one half of the pressure in said inner chamber,
• wherein clamping rings are provided around said coned ring elements to keep pairs of oppositionally directed elements of said coned ring elements closely and sealingly together with said clamping rings filling at at least a major portion of said outer chamber to prevent excessive compressible fluid in said outer chamber,
• wherein dead space fillers are provided in said inner and outer chambers for the prevention of excessive compressible fluid containing spaces in said inner and outer chambers, wherein said pump includes :
• (a) a radially flexible ringshaped seal lip portion (22) which is subjected from its inner space (clearance) (48) to pressure in said chamber (50) to be sealingly pressed against the inner face (60) of said hollow coned ring (7,11,301) while following radial movements of said inner face under said pressure radially inwardly of said seal lip portion to maintain said seal at said radial movements, and;
• (b) said pair of said hollow coned rings elements (1,11,301) with said elements symmetrically arranged around a common axis to form between said hollow elements said chamber (50) with a clamping ring arrangement provided radially outwards of said elements to fasten the radial outer ends of said elements together, wherein said clamping rings (27,28,329,328) form radially flexible ring (shaped portions (42,32,332) radially inwards of circular ring grooves (29,329) to meet with the holding faces of said portions (42,32,332) clamping faces (33) on the radial outer ends of said elements (1,11,301), and, wherein said elements (1,11,301) are provided with axially towards the other of said rings (1,11,301) directed outer axial extensions (12) with said extensions (12) formed with bearing faces (13) which meet each other in a pair of bearing faces (23), while a centering ring (20) meets the radial inner faces of said extensions (12) to center said elements (1,11,301) on each other while a seal ring (26) is provided radially inwards of said centering ring (20) to seal said chamber 50.