Characteristics of Dual-cylinder Hydraulic Transformer with Rotatable Wash Plate


Abstract˖To overcome the shortages of the rotating valve plate hydraulic transformer in pressure ratio, flow pulsation and noise, a novel hydraulic transformer with small flow pulsation and noise is presented. The characteristics of the modern hydraulic transformer are analysed. A novel hydraulic transformer with a rotating swash plate and double cylinders are investigated. Small flow pulsation and noise are achieved by increasing the piston number and the initial position control of the swash plate angle. The characteristics of the swash plate angle and the moment of resistance when rotating the swash plate were investigated. The pressure ratio was tested by a prototype. The initial position of the swash plate should be set in the position where the middle of the port A and the top dead centre are superposed. When the rotary angle of the swash plate is below 100°, the uniformity coefficient of the output flow reduces about 40% in the novel hydraulic transformer. However, when the rotary angle of the swash plate continues to become larger, the uniformity coefficient will become same. The measured results indicated that the novel configuration can realise a wider pressure ratio range. 

ࠡᣄ * ⎆य़বय़▊⎆य़⋉ȠẂ࿁Ўϔԧˈৃḍ ᯣṁ◄ᡅᅲɴிඣय़ՈᘦɋᅆǄ1965 ᑈˈ ᭛ǲ [1]Ŋ‫ܜ‬Ẵњ⎆य़বय़ॳˊˈ᪩⎆य़বय़ ᵘᴖˈࠊỤೄ▂ˈৠᯊা࿁ᅲɴऩবय़ˈϨ * ĀकѠѨāᆊᾬྨ‫ۘ܄‬ᰈ-ֲ(B2220110005)Ǆ20121226 ᬊ ࠄ߱ःˈ20130720 ᬊࠄׂᬍः ࿁ₓᤳ༅Ǆ1971 ᑈˈHERBERT [2] ᪂ᩥњϔ ঠ⎆य़বय़ˈ᪩ൟ⎆य़বय़াᰃᇚ⎆य़⋉ ȠẂऩՈৠḸᴎẄẢǄ 1997 ᑈˈINNAS NOXA ༘ড়ᦤߎњᮄൟ ᵘՈ INNAS ⎆य़বय़ [3] ˈ᪩ᵘᬍবњӴඣ⎆य़ বय़᪂ᩥϞָᇚ⎆य़⋉ȠẂৠḸᴎẄẢՈ ᵘˈ໐ᰃ₋Ϭϝज़ষՈ-⌕֜ᵘ [4] ǄINNAS ⎆ य़বय़ᇚ⎆य़⋉ȠẂՈ࿁▊Ўϔᵯˈᵘ៤њ ϔϾưএՈ⎆य़‫ܗ‬ӊˈ࣪њᴎẄᵘˈᛃₓᇣˈ ᳜ 2013 ᑈ 11 ᳜ ਈ ම˖ঠԧᮟḰ᭰֜ᓣ⎆य़বय़Ľᗻߚᵤ 145 ᗕડᑨᖿˈৃỞẋᮟḰ-⌕֜ᴹࠊ⊍⑤ᯣṁ ⒸՈ⌕ₓ↨ǃय़↨ˈ݊ᎹẋЁాໄṇ [5] Ǆ 
2002 ᑈˈACHTEN [6] ᇚ INNAS ⎆य़বय़ ϵॳᴹՈ 7 Ͼ᷅าᬍЎ 18 Ͼ᷅าˈԧᔶᓣϵ▊៤ ᓣᵘᬍЎৃҹႮϵՈঠ⍂ᵃᓣᵘǄ᷅า᭄ Ո‫ޣ‬ᇣњ⌕ₓḰ‫ڭ‬Ոˈ┑Ԣњాໄ∈ᑇˈ ԚᵘᎹᄾᴖǄ ֲࠡˈINNAS ⎆य़বय़Ոᗻ࿁ẜẠ≵᳝Ẃࠄ Ꮉᅲ┉◄∖Ո∈ᑇˈ᩼݇⏲⒲Lẜ᳝ᕙѢẟϔ ℹᢧ‫ࣙˈއ‬ᣀय़ᇇೈ [7][8][9] ǃాໄ [8ˈ10-12] ǃय़⌕ₓ ⊶ [10] ǃ-⌕֜Ϣৢ֚Ոষ [9ˈ 13] ⒲LǄINNAS ⎆य़বय़ᮟḰ-⌕֜ẟᜐবय़ՈẋЁˈ-⌕ ֜ϞՈ-⌕ज़ষϢৢ֚ϞՈ⊍ᲳПⒸӮߎɴἲ֚ ᅆ⌕ɴᬥˈϨ-⌕֜ՈᮟḰᢖᑺᰃ᳝└Ոˈবय़ Ոবय़↨ᇇೈফࠄњ└ࠊˈּ݇ۘऺ᳝ϔᅮẟሩˈ Ԛ≵᳝ҢᴀᯬϞᢧ‫އ‬᪩⒲L˗-⌕֜Ոϝज़ষᵘ Փ᷅าҢϔϾज़ষẋ⏵ࠄϔϾज़ষՈEɋ ˈѻϣՈ⌕ₓ‫ˈߏކ‬Ụ៤ṇʌՈాໄˈ ‫ాޣ‬ᮍ⊩Џᡅ᳝ᬍব᷅าᄨ-⌕֜-⌕ज़ষᔶ ź [9] ǃĀẁāᡔᴃ [12] ǃĀ⍂ᵃൟāᵘҹঞ᷅า ᭄ [6] ǄINNAS ⎆य़বय़ḋᴎЏᡅ⎆य़⋉Ƞ ẂՈ‫܄‬ϞᬍỤ໐ᴹˈবय़↨ࠊ᪡൹ᴎᵘᄬԧ ࢳǃᵘᴖՈ⒲L [8] ᓣЁ q üüٰᯊ⌕ₓ d üü᷅าָᕘ r üü᷅าߚᏗञᕘ ω üüԧᮟḰᢖợᑺ γ üü᭰֜ؒᢖ ϕ üü᷅าḰᢖ ԧ 1 Ͼ᷅าẔ᠔ѻϣՈٰᯊ⌕ₓ 
⎆य़বय़῁࿁ℷᐌᎹǄ ҹϟℶ⚍Ў߱ྟԡาᯊˈབ 2 ᠔߾ˈᔧ᭰֜ Ḱᢖ 0e̚60eᇇೈ‫ˈݙ‬ ᷅าဘҢ A ষඓẋ⏵ऎˈ ᆍࢳ V ‫ޣ‬ᇣˈय़ p छʌˈ໐ৢॅ✊Ϣय़ṇԢՈ B ষỞˈѻϣय़‫ˈߏކ‬ৠˊˈ B ষࠄ T ষ T ষࠄ A ষˈ῁ᇚѻϣ‫ߏކ‬ᤃాໄ˗ᔧ᭰֜Ḱ ᢖ 60e̚120eᇇೈ‫ˈݙ‬ ᷅าဘҢ A ষඓẋ⏵ऎˈ ᆍࢳ V ˈय़ p ┑Ԣˈ໐ৢϢय़ṇʌՈ B ষ Ởˈѻϣय़‫ˈߏކ‬ B ষࠄ T ষ T ষࠄ A ষ῁᳝ৠḋՈᵰǄ 2 ϟℶ⚍Ў߱ྟԡาՈব࣪ᢈᕟ ✊໐ˈҹϞℶ⚍Ў߱ྟԡาᯊˈབ 3 ᠔߾ˈ ᔧ᭰֜Ḱᢖ 0e̚60eᇇೈ‫ˈݙ‬᷅าဘҢ B ষඓ ẋẋ⏵ऎˈᆍࢳ V ‫ޣ‬ᇣˈय़ p छʌˈ໐ৢϢय़ ṇʌՈ A ষỞˈᢧњय़‫ˈߏކ‬ৠˊˈ A ষ ࠄ T ষ T ষࠄ B ষˈ῁᳝ৠḋ‫ކ‬ᬜᵰ˗ᔧ᭰֜ Ḱᢖ 60e̚120eᇇೈ‫ˈݙ‬᷅าဘҢ B ষඓẋ⏵ ऎˈᆍࢳ V ˈय़ p ┑Ԣˈ໐ৢϢय़ṇԢՈ A ষỞˈৠḋᢧњय़‫ˈߏކ‬ A ষࠄ T ষ T ষࠄ B ষ᳝ৠḋՈ‫ކ‬ᬜᵰǄ 3 Ϟℶ⚍Ў߱ྟԡาՈব࣪ᢈᕟ වϞ᠔ẴˈᮟḰ᭰֜ᓣ⎆य़বय़ᅰᇚϞℶ⚍ Ϣ A ষЁ⚍ₑড়ᯊЎ᭰֜߱ྟԡาˈℸ᳝߽Ѣ‫ޣ‬ ᇣ⎆य़বय़ᎹẋЁՈय़‫ߏކ‬ᤃాໄǄ 3 ⌕ₓ ऩϾ᷅าẔ᠔ѻϣՈٰᯊ⌕ₓ [14]
2 1 1 1 π 2 π tan sin ( 1) 4 i d q r i Z ω γ ϕ α ⎡ ⎤ = + -+ ⎢ ⎥ ⎣ ⎦ (2) 
ᓣЁ 1i q üüԧ 1 ᷅าٰᯊ⌕ₓ Z üü᷅าᘏ᭄ i üü᷅าՈ.ᑣේোˈi=1,2,Ă,z 
11 ϕ üüԧ 1 Ո᷅า 1 ՈḰᢖ α üü᭰֜Ḱᢖ ԧ 2 Ͼ᷅าẔ᠔ѻϣՈٰᯊ⌕ₓ 2 2 2 1 π 2 π tan sin ( 1) 4 i d q r i Z ω γ ϕ α ⎡ ⎤ = + -+ ⎢ ⎥ ⎣ ⎦ (3) 
ᓣЁˈ 2i q Ўԧ 2 ᷅าٰᯊ⌕ₓˈ 21 ϕ Ўԧ 2 Ո ᷅า 1 ՈḰᢖǄ ⌕ₓᑺϬ⌕ₓϡഛࣔி᭄ [14] ᜥₓ max min max q q q q δ -= (4) ᓣЁ max q üü⎆य़বय᳔़ٰᯊ⌕ₓ min q üü⎆य़বय᳔़ᇣٰᯊ⌕ₓ ϸϾԧПⒸՈּԡ݇ிϬᓣ(5)ᜬ߾
Wei Wu, Chongbo Jing, Jibin Hu, Shihua Yuan
Characteristics of Dual-cylinder Hydraulic Transformer with Rotatable Wash Plate