CN203867801U - Contra-positioned reciprocating piston type nitrogen compressor with four-row three-grade compression - Google Patents
Contra-positioned reciprocating piston type nitrogen compressor with four-row three-grade compression Download PDFInfo
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- CN203867801U CN203867801U CN201420262538.5U CN201420262538U CN203867801U CN 203867801 U CN203867801 U CN 203867801U CN 201420262538 U CN201420262538 U CN 201420262538U CN 203867801 U CN203867801 U CN 203867801U
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Abstract
A contra-positioned reciprocating piston type nitrogen compressor with four-row three-grade compression comprises a horizontally-arranged compressor body and a crankshaft connected to a motor via a rigid coupler is disposed in the compressor body. Two sides of the compressor body are respectively provided with four intermediate bodies, in which each two intermediate bodies arranged side by side are vertically abutted against each side of the compressor body; with interval positioning, each intermediate body is connected with a row of filler accommodating cylinder, each of which is provided with a built-in oil wiper via a bolt; four rows of accommodating cylinders are respectively connected with two first-grade air cylinder body, a second-grade air cylinder body and a third-grade air cylinder body; the three grades of air cylinder bodies are independently casted into an integral body; a piston is respectively disposed in the two first-grade air cylinder bodies, the second-grade air cylinder and the third-grade air cylinder body; and the pistons are individually connected with the crankshaft in the compressor body via a corresponding piston rod, a cross head and a connection rod. By the use of the contra-positioned reciprocating piston type nitrogen compressor with four-row three-grade compression, a gap for national 18000Nm3/h nitrogen gas is filled.
Description
Technical field
The reciprocating piston type nitrogen compressor that the utility model relates to three grades of compressions of a kind of opposed type four row, especially can be user 18000 Nm is provided
3the reciprocating piston type nitrogen gas compressor of three grades of compressions of opposed type four row of/h nitrogen gas.
Background technique
At present, reciprocating (gas) compressor has been a kind of comparatively ripe gas compressing equipment, but in prior art, for 18000 Nm
3it is blank that the Reciprocting piston compressor of three grades of compressions of opposed type four row of the nitrogen gas of/h also belongs to.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of improvement of carrying out is on the basis of existing technology provided, and fills up domestic 18000Nm
3the reciprocating piston type nitrogen compressor of three grades of compressions of blank opposed type four row of the Reciprocting piston compressor of three grades of compressions of opposed type four row of/h gas.
The purpose of this utility model completes by following technical solution, the reciprocating piston type nitrogen compressor of described three grades of compressions of opposed type four row, it comprises what a horizontal type was arranged, inside have one by rigid coupling, to be connected in the fuselage of the bent axle of motor, there are juxtaposed totally four middle bodies between two the both sides of described fuselage respectively vertical butt joint, in each, body is connected with by positioned at intervals and with bolt the extend neck that row are built-in with oil wiper filler, on four row extend necks, by bolt and load filler, be connected with respectively independent two one-level cylinder block cast in block respectively, a secondary cylinder body and a three-stage cylinder body, in described two one-level cylinder block, secondary cylinder body and three-stage cylinder body, be equipped with respectively piston, described piston is respectively by piston rod, crosshead and connecting rod are connected with the bent axle in fuselage separately.
The other end of described bent axle is connected with oil pump by free wheel device; At the lubricant oil in fuselage after oil strainer filters, by oil pump, boost, after oil cooler, essential oil filter, divide and pick out two-way again, one tunnel is communicated with main bearing and is communicated with connecting rod bottom-end bearing and small end bearing by the inner oil transportation hole arranging of bent axle, another road is communicated in the crosshead guide rail on middle body, is provided with the oil sump that the lubricant oil for all oil circuits confluxes and can again circulate in crankcase.
Described bent axle joins with four connecting rods respectively, four connecting rods are connecting four crossheads separately through crosshead pin separately, four crossheads are connected by hydraulicefficiency tightening flange with four piston rods respectively, and four piston rods are connected with the piston in cylinder block at different levels respectively again; Crankshaft-and-connecting-rod is all used forged steel manufacture, and the upper end of connecting rod has been pressed into copper base bearing metal axle bush, and lower end bottom-end bearing adopts palium thin-wall bearing shell, and crosshead is cast-steel integral casting, and attrition surface has watered babbit layer.
In cylinder block at different levels of the present invention is equal, be lined with cylinder sleeve, cylinder heads at different levels and cylinder at different levels are respectively arranged with air cooling and water cooling plant, and the load filler consisting of a plurality of built-in Packed stuffing boxes and flange is installed in cylinder block; Described piston is double cropping formula structure, mainly piston body, piston rod, piston ring, support ring, consists of.
The stuffing box of described load filler is worn together by two stay-bolts, and in the tapped hole that is threaded into the last stuffing box of bolt one end, and the other end stretches out outside flange, with nut, is wrenched; Between described stuffing box and stuffing box, mutually mate and stack, and be provided with and prevent that the O type circle that cooling water in water channel infiltrates filler from sealing; Described piston body adopts spheroidal graphite cast iron to cast, and piston body is provided with inner unloading hole, and described support ring and piston ring are used respectively and fill carbon teflon and the fine teflon of carbon is made.
Described load filler comprise one be located near after flange, with the stuffing box of return-air hole, have twice cutting opening fluoroplastic ring and together with metal block ring be arranged in the stuffing box of return-air hole: in other stuffing box of load filler, be mounted with radially and tangentially opening, only to the sealing of a direction work fluoroplastic ring and block ring; Described metal block ring be radial opening and with overlap joint mouthful, gapped between metal block ring and piston rod.
Described oil wiper filler is comprised of two cast irons or the stuffing box of steel, the scraper ring of subdivision, seal ring, dividing plate and gland, and dividing plate is wherein fixed by bolts between middle body and extend neck on clamping plate; Gland is placed in the crankcase end of dividing plate, and double-screw bolt is housed on stuffing box, is threaded into gland, and through dividing plate and stuffing box; Near the bronze scraper ring that three ring radial openings are housed in that stuffing box of crankcase, in that stuffing box of cylinder, be provided with two groups tangentially containing the PTFE seal ring of filling carbon fibre.
Described fuselage, by cylinder iron manufacturing " U " type fuselage body and the convenient fuselage top cover formation that main bearing and crank pin bearing are installed, is provided with intensive stiffening rib and web beam on fuselage body; Described middle body is cylinder iron manufactured, and is the link that connects fuselage and extend neck, and described crosshead moves reciprocatingly in the slideway inside of middle body; Described extend neck can be divided into single chamber or multicell, and oil wiper filler is housed on it, and outer wall is equipped with very large hermetyic window lid.
The utility model belongs to a kind of improvement to prior art, has the points such as rational in infrastructure, compact, easy to use, good reliability, and it provides 18000Nm for user
3/ h nitrogen gas craft type compressor, has filled up domestic technological gap in this respect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A schematic diagram in Fig. 1.
Fig. 3 is B-B schematic diagram in Fig. 1.
Fig. 4 is gas schematic flow sheet described in the utility model.
Fig. 5 is oil pump described in the utility model, petrol station schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: Fig. 1-5 are depicted as an embodiment of the present utility model, the reciprocating piston type nitrogen compressor of three grades of compressions of these opposed type four row is at least by fuselage, middle body, extend neck, cylinder body, piston, crosshead, connecting rod, bent axle, load filler, oil wiper filler, oil pump, petrol station, air intake filter, inhaling valve, motor, rigid coupling, air inlet buffer, exhausting buffer, cooler, safety valve forms, and described cylinder body is by respectively independent two one-level cylinder block 1 cast in block, a secondary cylinder 10 and a three-stage cylinder body 12 form, described oil wiper filler 4 is connected on every row extend neck 9, described fuselage 7 forms with middle body 8 apportion vertical butt joint, and middle body 8 connects to form four row by positioned at intervals bolt, cylinder block 1 at different levels with extend neck 9, 10, 12 are connected on extend neck 9 by bolt and load filler 3 respectively, cylinder block 1 at different levels, 10, the 12 interior cylinder sleeves that all serve as a contrast, cylinder heads at different levels and cylinder at different levels adopt respectively air cooling and water-cooled, and described bent axle 14 is by connecting rod 6, crosshead 5 and piston rod drive cylinder block 1 at different levels, 10, piston 2 in 12, 11, 13, this bent axle 14 joins with four connecting rods 6 respectively, and four connecting rods 6 connect 5, four crossheads 5 of four crossheads through crosshead pin and are connected by hydraulicefficiency tightening flange with four piston rods, bent axle 4 use forged steel are manufactured, inside being provided with oil transportation hole, is the path of the lubricant oil of main bearing and connecting rod bottom-end bearing, and connecting rod 6 use forged steel are manufactured, upper end is pressed into copper base bearing metal axle bush, lower end bottom-end bearing palium thin-wall bearing shell, crosshead 5 is cast-steel integral casting, attrition surface has watered Babbitt.One end of this bent axle connects with motor 18 with rigid coupling 19, the other end drives oil pump 26 by free wheel device, rigid coupling 15 obtains power band dynamic crankshaft 15 from motor 25 and rotates, and bent axle 15 drives piston rod to-and-fro motion by connecting rod 6, crosshead 5 again.Meanwhile, motor drives oil pump 26 by bent axle 15, at the lubricant oil in fuselage 7 after oil strainer 27 filters, by oil pump 26, boost, more totally divide two-way after oil cooler 28, essential oil filter 29, a road enters main bearing and removes lubricated connecting rod bottom-end bearing by the inner oilhole of bent axle 15, and enter small end bearing and be lubricated, crosshead guide rail on another Lu Quzhong body 8, finally the lubricant oil of all oil circuits all flows in the oil sump in crankcase, again circulation.The machine is except being provided with oil pump 26; also be provided with an outer oil pump 30; by oil pump 26, supply oil lubrication in the course of the work; and outer oil pump 30 only uses when starting, shutdown or oil pump feed pressure are undesired, outer oil pump 30, oil cooler 28, essential oil filter 29 and interconnective oil pipe line and oil temperature, voltage-controlled valve form petrol station.
In described cylinder block 1,10,12, load filler 3 is installed, a plurality of built-in Packed stuffing boxes and flange, consisted of, stuffing box is worn together by two stay-bolts, in the tapped hole that is threaded into the last box of bolt one end, and the other end stretches out outside flange, with nut, be wrenched.Two bolts are not arranged symmetrically with, and this is the centering for stuffing box.Between stuffing box and stuffing box, mutually mate and stack, have the sealing of O type circle, prevent cooling water infiltration filler in water channel.
The load filler of standard has a return-air hole stuffing box to be located near after flange, the fluoroplastic ring that has a twice cutting opening with together with metal block ring be located in return-air hole box: this fluoroplastic ring plays the seal action of both direction.And in other each stuffing boxes, have radially and fluoroplastic ring and the block ring of tangential opening, this fluoroplastic ring, only works to the sealing of a direction.Metal block ring is radial opening, with overlap joint mouthful, gapped between ring and piston rod; The effect of block ring is to stop " cold flow " of fluoroplastic ring; On end face of flange and cylindrical, there is NPT Taper Pipe to connect screw thread, to connect pipe.
Stuffing box may contain one or more stuffing boxes with cooling water chamber; On flange, with water inlet interface and the water outlet mouthpiece of two NPT3/8, on end face He Wai garden each, take over very easily; Standard filler case is also equipped with NPT screw thread for connection electrical resistance thermometer or thermocouple.
Described oil wiper filler 4 is comprised of two cast irons or the stuffing box of steel, the scraper ring of subdivision and seal ring and dividing plate and gland.Dividing plate is fixed by bolts between middle body and extend neck on clamping plate.Gland is placed in the crankcase end of dividing plate, can block the emitted oil of crosshead to-and-fro motion and enter dividing plate.Double-screw bolt is housed on box, is threaded into gland, and through dividing plate and box.Near the bronze scraper ring that three ring radial openings are housed in that box of crankcase.And be equipped with two groups tangentially containing the PTFE seal ring of filling carbon fibre in that box of cylinder.The oil that scraper ring scrapes by the spill port on dividing plate to crankcase.
Cylinders at different levels and load filler at different levels be logical water quench all, cooling water enter successively in coolers at different levels and cylinder block with cooling jacket.When opening inhaling valve 16, nitrogen gas enters one-level cylinder through air intake filter 17, one-level air inlet buffer 18, the pressure that raises under the effect of reciprocating first stage piston 2 comes out to one-level exhausting buffer 19 from one-level cylinder 1 by the intake and exhaust air valve on cylinder, and enters secondary cylinder 10 by entering secondary air inlet buffer 20 after one-level cooler A cooling again; The air valve of pressure on cylinder that raise under the effect of reciprocating second piston 11 comes out to secondary exhausting buffer 21 from secondary cylinder, and enters three-stage cylinder 12 by entering three grading pneumatic buffers 22 after secondary coolers B cooling again; The air valve of pressure on cylinder that raise under the effect of reciprocating three grades of pistons 13 comes out to three grades of exhausting buffers 23 from three-stage cylinder, and by after three grades of cooler C coolings, finally by safety check 24, send, the entering water temp of above-mentioned each cooler is not more than 32 ℃, flow is 110t/h, from cylinder, load filler and each cooler water out, by the water valve on each path, from main sewer, discharge.
Lubricant oil band oil strainer 27 and oil pump 26 or outer oil pump 30, from oil cooler 28 out, rear respectively to seven main bearings and four row crosshead slideway fuel feeding by essential oil filter 29, and by bent axle 14 and the inner oil transportation of connecting rod 6 duct, the large and small bearing of connecting rod is carried out to oil lubrication.
Described piston body 2,11,13 is double cropping formula structure, piston body, piston rod, piston ring, support ring etc., consists of.
Described piston adopts spheroidal graphite cast iron to cast, and piston arranges inner unloading hole, and described support ring and piston ring are used respectively and fill carbon teflon and the fine teflon of carbon is made, and have good self lubricity and wear resistance.
On one, two, three exhaust duct of this nitrogen gas compressor, be provided with respectively primary safety valve for inner container a, secondary safety valve b, three level security valve c, prevent that exhaust pressure from transfiniting; Oil wiper filler 4 is installed on extend neck 9, prevents from altering to load filler 3 and entering cylinder and pollute source of the gas on lubricant oil;
Embodiment: fuselage of the present invention is that a kind of cast iron is manufactured " U " type fuselage, the fuselage top cover tightening for ease of main bearing and the useful bolt of crank pin bearing band are installed.Fuselage has intensive stiffening rib web beam, and supports main shaft holds to guarantee the centering of bearing precision.
Described middle body is manufactured by cast iron, is the link that connects fuselage and extend neck, and crosshead moves reciprocatingly in its slideway inside.
Described extend neck can be divided into single chamber or multicell, and oil wiper filler is housed on it, and outer wall is equipped with very large hermetyic window lid, makes staff easily by window, check filler, maintains.
Load filler is installed in described cylinder block, a plurality of built-in Packed stuffing boxes and flange, consisted of, stuffing box is worn together by two stay-bolts, in the tapped hole that is threaded into the last box of bolt one end, and the other end stretches out outside flange, with nut, be wrenched.Two bolts are not arranged symmetrically with, and this is the centering for stuffing box.Between box and box, mutually mate and stack, have the sealing of O type circle, prevent cooling water infiltration filler in water channel.The load filler of standard has a return-air hole stuffing box to be located near after flange.The fluoroplastic ring that has a twice cutting opening with together with metal block ring be located in return-air hole box: this fluoroplastic ring plays the seal action of both direction.And in other each box stuffing boxes, have radially and fluoroplastic ring and the block ring of tangential opening, this fluoroplastic ring, only works to the sealing of a direction.Metal block ring is radial opening, with overlap joint mouthful, gapped between ring and piston rod.The effect of block ring is to stop " cold flow " of fluoroplastic ring.On end face of flange and cylindrical, there is NPT Taper Pipe to connect screw thread, to connect pipe; All Stuffing boxes all provide water cooling, and stuffing box may contain one or more stuffing boxes with cooling water chamber; On flange with water inlet interface and the water outlet mouthpiece of two NPT3/8, on end face He Wai garden each.
Described piston is double cropping formula structure and consists of piston body, piston rod, piston ring, support ring etc.
Described crosshead moves reciprocatingly in middle body slideway.
Described connecting rod is forged into by punching block.In order to force the lubricated of crosshead pin, connecting rod is drilled with rifling hole.In the microcephaly hole of connecting rod, use bronze bushing.Connecting rod shank and connecting rod are stamped matched indicia, so that repeat centering.
Described bent axle, by high-tensile alloy steel forging, is eliminated and heat treatment through stress.All main journals and crank throw neck are through precision grinding and polishing.Between each crank throw, be provided with one grade of main bearing, at drive end, be provided with two grades of main bearings, can obtain minimum amount of deflection, stress and bearing load like this.When needed, on bent axle, can add and use bolted balancer weight.
Described petrol station consists of screw pump, oil strainer, oil cooler, oily thermostat valve, pressure control valve etc.For the reciprocating lubricant oil that provides between metal parts guarantees.Be loaded on sliding bottom and be furnished with various pressure and temperature indicating meters.On standing, dispose lifting eye and adjust screw so that install.
Claims (8)
1. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row, it comprises what a horizontal type was arranged, inside have one by rigid coupling, to be connected in the fuselage of the bent axle of motor, there are juxtaposed totally four middle bodies (8) between two the both sides that it is characterized in that described fuselage (7) respectively vertical butt joint, body in each (8) is connected with by positioned at intervals and with bolt the extend neck (9) that row are built-in with oil wiper filler (4), on four row extend necks, by bolt and load filler (3), be connected with respectively independent two one-level cylinder block cast in block (1) respectively, a secondary cylinder body (10) and a three-stage cylinder body (12), in described two one-level cylinder block (1), a secondary cylinder body (10) and three-stage cylinder body, be equipped with respectively piston (2,11,13), described piston (2,11,13) is respectively by piston rod, crosshead (5) and connecting rod (6) are connected with the bent axle (14) in fuselage (7) separately.
2. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row according to claim 1, is characterized in that the other end of described bent axle (14) is connected with oil pump (26) by free wheel device; At the lubricant oil in fuselage (7) after oil strainer (27) filters, by oil pump (26), boost, after oil cooler (28), essential oil filter (29), divide and pick out two-way again, one tunnel is communicated with main bearing and is communicated with connecting rod bottom-end bearing and small end bearing by the inner oil transportation hole arranging of bent axle (15), another road is communicated in the crosshead guide rail on middle body (8), is provided with the oil sump that the lubricant oil for all oil circuits confluxes and can again circulate in crankcase.
3. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row according to claim 1 and 2, it is characterized in that described bent axle (14) joins with four connecting rods (6) respectively, four connecting rods (6) are connecting four crossheads (5) separately through crosshead pin separately, four crossheads (5) are connected by hydraulicefficiency tightening flange with four piston rods respectively, and four piston rods are connected with the piston (2,11,13) in cylinder block at different levels (1,10,12) respectively again; Bent axle (4) and connecting rod (6) are all used forged steel manufacture, and the upper end of connecting rod (6) has been pressed into copper base bearing metal axle bush, and lower end bottom-end bearing adopts palium thin-wall bearing shell, and crosshead (5) is cast-steel integral casting, and attrition surface has watered babbit layer.
4. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row according to claim 3, it is characterized in that being lined with cylinder sleeve in described cylinder block at different levels (1,10,12) all, cylinder heads at different levels and cylinder at different levels are respectively arranged with air cooling and water cooling plant, and the load filler (3) consisting of a plurality of built-in Packed stuffing boxes and flange is installed in cylinder block (1,10,12); Described piston (2,11,13) is double cropping formula structure, mainly piston body, piston rod, piston ring, support ring, consists of.
5. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row according to claim 4, the stuffing box that it is characterized in that described load filler (3) is worn together by two stay-bolts, in the tapped hole that is threaded into the last stuffing box of bolt one end, and the other end stretches out outside flange, with nut, be wrenched; Between described stuffing box and stuffing box, mutually mate and stack, and be provided with and prevent that the O type circle that cooling water in water channel infiltrates filler from sealing; Described piston body adopts spheroidal graphite cast iron to cast, and piston body is provided with inner unloading hole, and described support ring and piston ring are used respectively and fill carbon teflon and the fine teflon of carbon is made.
6. according to the reciprocating piston type nitrogen compressor of the three grades of compressions of opposed type four row described in claim 4 or 5, it is characterized in that described load filler comprise one be located near after flange, with the stuffing box of return-air hole, have twice cutting opening fluoroplastic ring and together with metal block ring be arranged in the stuffing box of return-air hole: in other stuffing box of load filler, be mounted with radially and tangentially opening, only to the sealing of a direction work fluoroplastic ring and block ring; Described metal block ring be radial opening and with overlap joint mouthful, gapped between metal block ring and piston rod.
7. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row according to claim 1, it is characterized in that described oil wiper filler (4) is comprised of two cast irons or the stuffing box of steel, the scraper ring of subdivision, seal ring, dividing plate and gland, dividing plate is wherein fixed by bolts between middle body and extend neck on clamping plate; Gland is placed in the crankcase end of dividing plate, and double-screw bolt is housed on stuffing box, is threaded into gland, and through dividing plate and stuffing box; Near the bronze scraper ring that three ring radial openings are housed in that stuffing box of crankcase, in that stuffing box of cylinder, be provided with two groups tangentially containing the PTFE seal ring of filling carbon fibre.
8. the reciprocating piston type nitrogen compressor of three grades of compressions of opposed type four row according to claim 1, it is characterized in that described fuselage, by cylinder iron manufacturing " U " type fuselage body and the convenient fuselage top cover formation that main bearing and crank pin bearing are installed, is provided with intensive stiffening rib and web beam on fuselage body; Described middle body is cylinder iron manufactured, and is the link that connects fuselage and extend neck, and described crosshead moves reciprocatingly in the slideway inside of middle body; Described extend neck can be divided into single chamber or multicell, and oil wiper filler is housed on it, and outer wall is equipped with very large hermetyic window lid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262538.5U CN203867801U (en) | 2014-05-22 | 2014-05-22 | Contra-positioned reciprocating piston type nitrogen compressor with four-row three-grade compression |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420262538.5U CN203867801U (en) | 2014-05-22 | 2014-05-22 | Contra-positioned reciprocating piston type nitrogen compressor with four-row three-grade compression |
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| CN203867801U true CN203867801U (en) | 2014-10-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095260A1 (en) * | 2014-12-18 | 2016-06-23 | 江景通 | Multi-cylinder internal combustion engine set adopting a crosshead assembly rod |
| CN106050616A (en) * | 2016-07-29 | 2016-10-26 | 高原压缩技术（天津）有限公司 | Residual oil or waste oil recycling system for reciprocating compressor |
| CN106050617A (en) * | 2016-07-29 | 2016-10-26 | 高原压缩技术（天津）有限公司 | Residual oil or waste oil recovery and utilization system for reciprocating compressor |
| CN106050618A (en) * | 2016-07-29 | 2016-10-26 | 高原压缩技术（天津）有限公司 | Residual oil or waste oil recovery and utilization system for reciprocating compressor |
| CN107035660A (en) * | 2017-06-02 | 2017-08-11 | 四川瑞晟石油设备开发有限公司 | A kind of single cylinder compressor with oil-feed pump |
| CN109372718A (en) * | 2018-09-27 | 2019-02-22 | 中石化石油机械股份有限公司三机分公司 | Variable working condition Reciprocating Natural Gas Compressor design method |
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2014
- 2014-05-22 CN CN201420262538.5U patent/CN203867801U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095260A1 (en) * | 2014-12-18 | 2016-06-23 | 江景通 | Multi-cylinder internal combustion engine set adopting a crosshead assembly rod |
| CN106050616A (en) * | 2016-07-29 | 2016-10-26 | 高原压缩技术（天津）有限公司 | Residual oil or waste oil recycling system for reciprocating compressor |
| CN106050617A (en) * | 2016-07-29 | 2016-10-26 | 高原压缩技术（天津）有限公司 | Residual oil or waste oil recovery and utilization system for reciprocating compressor |
| CN106050618A (en) * | 2016-07-29 | 2016-10-26 | 高原压缩技术（天津）有限公司 | Residual oil or waste oil recovery and utilization system for reciprocating compressor |
| CN107035660A (en) * | 2017-06-02 | 2017-08-11 | 四川瑞晟石油设备开发有限公司 | A kind of single cylinder compressor with oil-feed pump |
| CN109372718A (en) * | 2018-09-27 | 2019-02-22 | 中石化石油机械股份有限公司三机分公司 | Variable working condition Reciprocating Natural Gas Compressor design method |
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