High-purity high-pressure argon compressor for titanium powder metallurgy

Abstract

The utility model relates to the technical field of compressors, in particular to a high-purity high-pressure argon compressor for titanium powder metallurgy, which comprises a crankcase, a machine body, a crankshaft, a crosshead, a sealer, an oil station, a motor and a cooler. The crankshaft box and the machine body are arranged at the center line of the crankshaft and are vertically folded to form a machine base, the middle body is installed on the top of the machine base, the crankshaft is arranged on four bearings in the crankshaft box in a supported mode, three rows of crank throws are different in degree, one end of the crankshaft is connected with a motor through a coupler of a rigid structure, and the crankshaft is upwards connected with a connecting rod in a rotating mode through a crank pin. The top end of the connecting rod is connected with the piston mechanism through a crosshead. The compressor is reasonable in design, the smaller occupied area is achieved, the problems that stress concentration exists at the root of a thread in a traditional structure and looseness possibly occurs in the operation process are effectively solved, and the working reliability of a piston rod and a connecting rod bolt is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, specifically a kind of high-purity high-pressure argon compressor for titanium powder metallurgy. BACKGROUND

[0002] Reciprocating compressor as a kind of common chemical machinery and equipment has wide application in petroleum, chemical industry and other industries. It is compressed by the reciprocating movement of piston in cylinder, and under the cooperation of air valve, realizes the suction, compression and discharge of gas, so as to improve gas pressure and meet the process production requirements.

[0003] At present, with the increasing use of reciprocating piston compressor, the use requirement is also higher, and for the special requirements of some newly-built devices, the newly-added reciprocating piston compressor needs to meet higher efficiency and safety;

[0004] Therefore, in view of the above needs, the technical scheme is proposed to further improve the efficiency of compressor, reduce the operation energy consumption of user, improve the safety and service life of high-pressure argon compressor, and provide a kind of high-purity high-pressure argon compressor for titanium powder metallurgy. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high-purity high-pressure argon compressor for titanium powder metallurgy to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of high-purity high-pressure argon compressor for titanium powder metallurgy, including crankcase, body, crankshaft, crosshead, seal, oil station, motor, cooler, it is suitable for large air volume, high-pressure argon compressor, with higher safety and longer service life.

[0007] Crankcase and body are set at crankshaft center line, and are matched to form a machine base, the machine base top is provided with an intermediate body, the crankshaft is supported on four bearings in the crankcase, three columns of crank are different degrees, one end of the crankshaft is connected with the motor through rigid structure coupling, oil hole is drilled in the crankshaft, for inputting lubricating oil, to ensure the lubrication between main bearing and connecting rod big end bearing;The connecting rod is rotatably connected to the crank by crank pin, and the connecting rod top is connected with the piston mechanism through the crosshead, the crosshead mainly guides the linear motion of the piston, and bears the lateral force of the piston.

[0008] Compared with the prior art, the utility model has the advantages that: three columns of three-stage double-acting structure type compression are adopted, the cylinder is oil-free lubricated, water-cooled and pry-mounted;

[0009] Through the optimization design of pipeline system, smaller land area is realized;

[0010] The overall arrangement of the piston rod and the unit is designed by using pulsation software, the pipeline structure is reasonable, beautiful and compact, the advanced hydraulic stretching technology is used for connecting between the cross head and the connecting rod bolt and the nut, the stress concentration at the thread root in the traditional structure and the problem of possible loosening in the operation process are effectively reduced, and the working reliability of the piston rod and the connecting rod bolt is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a schematic view of a front view of a partial structure of a high-purity high-pressure argon compressor for titanium powder metallurgy.

[0012] Fig. 2 It is a schematic view of a front view of a partial structure of a high-purity high-pressure argon compressor for titanium powder metallurgy.

[0013] Wherein: the crankcase 10, the machine body 11, the intermediate body 12, the crankshaft 13, the connecting rod 14, the cross head 15, the air valve, the seal 16, the oil station 17, the motor 18, the pry block 19, the first and second seals 37, the third seal 38, the first cylinder 39, the first piston 40, the third piston 41, the second piston 42, the second and third cylinders 43, the first intake valve 44, the first exhaust valve 45, the third intake valve 46, the third exhaust valve 47, the second intake valve 48, the second exhaust valve 49, and the shaft coupling 53. DETAILED DESCRIPTION

[0014] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0015] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0016] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood through specific circumstances.

[0017] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0018] Please refer to Figs. 1-2 A kind of high purity high pressure argon compressor for titanium powder metallurgy, including crankcase 10, fuselage 11, crankshaft 13, crosshead 15, sealing device 16, oil station 17, motor 18, cooler, it is applicable to large amount of gas, high pressure argon compressor, with higher safety and longer service life.

[0019] Crankcase 10 and fuselage 11 are set at the center line of crankshaft 13, and are matched top and bottom to form a machine base, and the machine base is provided with an intermediate body 12 at the top, and the crankshaft 13 is supported on four bearings in the crankcase 10, and the three rows of crank webs are each offset by 120 degrees, and one end of the crankshaft 13 is connected to the motor 18 through a rigid coupling 53, and an oil feeding hole is drilled in the crankshaft 13 for inputting lubricating oil to ensure lubrication between the main bearing and the connecting rod big end bearing, and the connecting rod 14 is rotatably connected to the crankshaft 13 through a crank pin, and the connecting rod 14 is connected to a piston mechanism through a crosshead 15 at the top end, and the crosshead 15 mainly guides the linear motion of the piston and bears the lateral force of the piston.

[0020] Specifically, the crosshead 15 is connected to the piston rod through an inclined pin at the top, and is connected to the small end copper bush bearing of the connecting rod 14 at the bottom.

[0021] The crankshaft 13 is made of rare earth nodular iron, and the connecting rod 14 is also made of rare earth nodular iron, and the upper end is pressed into a copper bush bearing, and the lower end big end bearing is made of bearing alloy bush.

[0022] As a preferred embodiment of the present application, the piston mechanism comprises a cylinder and a piston, the cylinder comprises a two-stage and three-stage cylinder 43 and a single-cast one-stage cylinder 39, and the coaxiality of the cylinder and the crosshead 15 slide is adjusted through the one-stage cylinder 39 and the two-stage and three-stage cylinder 43.

[0023] The piston comprises a first-stage piston 40 arranged at the output end of the first-stage cylinder 39, and second-stage and third-stage pistons 42, 41 arranged at the output ends of the second-stage and third-stage cylinders 43 respectively, and the first-stage piston 40, the second-stage piston 42 and the third-stage piston 41 are all arranged as double-acting type, and are composed of a piston, a piston rod, a piston ring, a guide ring and an oil baffle.

[0024] The oil scraper structures of the three groups of corresponding piston rods in the three groups of pistons are all the same, and are composed of an oil scraper body, an oil scraping ring and an oil baffle ring, wherein the oil scraping ring is made of phosphor bronze, and the oil baffle ring is made of filled polytetrafluoroethylene.

[0025] As a preferred embodiment of the present application, the first-stage cylinder 39, the second-stage and third-stage cylinders 43 are respectively provided with a first-stage intake valve 44, a first-stage exhaust valve 45, a third-stage intake valve 46, a third-stage exhaust valve 47, a second-stage intake valve 48 and a second-stage exhaust valve 49 at the intake ports and exhaust ports thereof;

[0026] The above-mentioned intake and exhaust valves of each stage are all of mesh type, which is suitable for the oil-free lubrication working condition of the cylinder. The parts used are all made of stainless steel.

[0027] The sealers 16 are arranged between the pistons and the cylinders for preventing gas from leaking from the gap between the pistons and the cylinders; wherein the first-stage and second-stage sealers 37 and the third-stage sealer 38 are arranged between the first-stage cylinder 39, the second-stage and third-stage cylinders 43 and the corresponding first-stage piston 40, second-stage piston 42 and third-stage piston 41, and the first-stage and second-stage sealers 37 are the same in structure and are composed of a ring flow resistance ring, five groups of sealing boxes and a terminal sealing ring, and the third-stage sealer 38 is cooled by brine or softened water and is composed of a ring flow resistance ring, six groups of sealing boxes and a terminal sealing ring.

[0028] The cooler is used for reducing the working temperature of the engine and preventing overheating. The cooler is usually installed outside the engine and is cooled by cooling liquid or air. In the cooling water system, the cooler is connected with the cylinder through the cooling liquid circulation system. The cooling liquid flows through the cooling liquid channel of the cylinder, absorbs heat and then flows through the cooler for heat dissipation;

[0029] The cooler is a packing type and high-efficiency finned tube cooler, and the shell is made of carbon steel. The gas flows in the tube pass, and the cooling water flows in the shell pass.

[0030] The oil station 17 is arranged at one side inside the crankcase 10 for lubricating, cooling and cleaning the moving parts of the compressor.

[0031] A set of jacks 19 are provided at the bottom of the crankcase 10 to provide a stable, pre-designed base for the compressor and its auxiliary equipment to be installed, transported and operated.

[0032] As a preferred embodiment of the present application, the gas pipeline of the machine is a stainless steel pipeline, and a safety valve is arranged on the inlet and each stage of the exhaust pipeline. A filter is arranged on the compressor inlet pipeline to prevent mechanical impurities from entering the cylinder. The cooling water system adopts closed loop circulation, and the opening degree of the drain valve is adjusted by using the manual stop valve at the outlet end to control the drain temperature of the cooling water to be not more than 40 DEG C.

[0033] It should be noted that the lubrication of the motion mechanism is forced lubrication by the oil station arranged at one end of the motion mechanism, which is provided with two position gear oil pumps, one of which works and the other works as a standby oil pump. The lubricating oil is sucked into the gear oil pump from the crankcase 10 through a filter, and the pressure oil is cooled by an oil cooler and then divided into two paths, one of which enters the crankshaft 13 to lubricate the main bearing and the connecting rod bearing, and the other enters the connecting rod small head shaft bushing, and the other end lubricates the crosshead 15 guide rail, and also enters the connecting rod small head shaft bushing.

[0034] The working principle of the utility model is that:

[0035] 1. Turn the crankshaft 13 for several turns to check whether the machine runs normally.

[0036] 2. Open the cooling water valve and adjust the water flow.

[0037] 3. Start the external oil pump motor to pre-inject oil to each lubricating point. If the oil temperature is lower than 5 DEG C, heat the lubricating oil, and when the oil temperature is higher than 10 DEG C, the electric heater is automatically disconnected.

[0038] 4. Open the backflow valve V706 and the vent valve V705.

[0039] 5. Start the motor 18.

[0040] 6. Open the suction valve V701, and when the gas in the compressor and the pipeline is exhausted, gradually close the backflow valve V706, then gradually close the vent valve V705, adjust the opening degree of the V704 discharge valve, and when the exhaust pressure reaches the rated value or the pressure required by the pipeline network, the compressor enters the normal working state.

[0041] It should be noted that the operation matters of the machine during normal operation are as follows:

[0042] Record the actual reading of the instrument every 1h;

[0043] If the instrument panel sends an alarm signal, the cause must be found immediately and adjusted in time;

[0044] When the compressor emergency interlock stops, the motor stops first, the auxiliary oil pump starts automatically, then the vent valve V705 opens automatically, the suction valve V701, the discharge valve V704 and the return valve V706 close automatically. After 5 minutes, the auxiliary oil pump and the cooling fan are automatically closed;

[0045] If the compressor stops for more than several weeks, to prevent rust inside the equipment, after normal stop, close the valves. Close the cooling water inlet valve, and drain all the water in the unit. During the stop, start the gear oil pump once a week, run for 30 minutes, and rotate the flywheel several times.

[0046] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A titanium powder metallurgy high-purity high-pressure argon compressor characterized by, The application relates to a piston engine, which comprises a crankcase (10), a machine body (11), a crankshaft (13), a crosshead (15), a seal device (16), an oil station (17), an electric motor (18) and a cooler; the crankcase (10) and the machine body (11) are oppositely arranged on the central line of the crankshaft (13) to form a machine base, the top of the machine base is provided with an intermediate body (12), the crankshaft (13) is supported on four bearings arranged in the crankcase (10), three rows of crank webs are arranged at an interval of 120 degrees, one end of the crankshaft (13) is connected with the electric motor (18) through a rigid coupling (53), and the crankshaft (13) is rotatably connected with a connecting rod (14) through a crank pin at the top; the top of the connecting rod (14) is connected with a piston rod through the crosshead (15).

2. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 1, characterized by An oil feeding hole is arranged in the crankshaft (13).

3. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 2, characterized by The top of the crosshead (15) is connected with the piston rod through an inclined pin, and the bottom is connected with a small head copper bush bearing of the connecting rod (14). The crankshaft (13) is made of rare earth spheroidal graphite cast iron, the connecting rod (14) is also made of rare earth spheroidal graphite cast iron, the upper end of the connecting rod (14) is pressed into a copper bush bearing, and the lower end of the connecting rod (14) is provided with a big head bearing with bearing alloy bearing bush; the crosshead (15) is integrally arranged and made of rare earth spheroidal graphite cast iron.

4. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 3, characterized by The piston mechanism comprises a cylinder and a piston; the cylinder comprises two-stage and three-stage cylinders (43) and a single-stage cylinder (39) which are integrally cast, the single-stage cylinder (39) and the two-stage and three-stage cylinders (43) are used for adjusting the coaxiality of the cylinder and the slide of the crosshead (15), and the cylinder body is lined with 30Cr13 stainless steel cylinder sleeves.

5. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 4, characterized by The piston comprises a single-stage piston (40) arranged at the output end of the single-stage cylinder (39), a two-stage piston (42) and a three-stage piston (41) arranged at the output ends of the two-stage and three-stage cylinders (43) respectively, the single-stage piston (40), the two-stage piston (42) and the three-stage piston (41) are all double-acting type, and are composed of a piston, a piston rod, a piston ring, a guide ring and an oil baffle; the material of the piston is 30Cr13, the three-stage piston (41) is integrated with the piston rod, the guide ring and the piston ring are both made of filled polytetrafluoroethylene.

6. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 5, characterized by A single-stage inlet valve (44), a single-stage exhaust valve (45), a three-stage inlet valve (46), a three-stage exhaust valve (47), a two-stage inlet valve (48) and a two-stage exhaust valve (49) are arranged at the air inlet and the air outlet of the single-stage cylinder (39), the two-stage and three-stage cylinders (43) respectively; the inlet and exhaust valves of all stages are all net type.

7. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 6, characterized by The seal device (16) is arranged between the piston and the cylinder, one-stage and two-stage seal devices (37) and a three-stage seal device (38) are arranged between the single-stage cylinder (39), the two-stage and three-stage cylinders (43) and the single-stage piston (40), the two-stage piston (42) and the three-stage piston (41) respectively; the one-stage and two-stage seal devices (37) are the same in structure and are composed of a ring flow resistance ring, five groups of seal boxes and a terminal seal ring; the three-stage seal device (38) is cooled by brine or softened water and is composed of a ring flow resistance ring, six groups of seal boxes and a terminal seal ring.

8. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 1, characterized by The cooler is a stuffing box type and high-efficiency finned tube cooler, and the shell is made of carbon steel.

9. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 1, characterized by The crankcase (10) is internally provided with an oil station (17) on one side.

10. The high-purity high-pressure argon compressor for titanium powder metallurgy according to claim 1, characterized by The crankcase (10) is provided with a set of pry blocks (19) at the bottom.

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