CN204692076U - A kind of plunger reciprocating pump and system thereof - Google Patents

A kind of plunger reciprocating pump and system thereof Download PDF

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Publication number
CN204692076U
CN204692076U CN201520443034.8U CN201520443034U CN204692076U CN 204692076 U CN204692076 U CN 204692076U CN 201520443034 U CN201520443034 U CN 201520443034U CN 204692076 U CN204692076 U CN 204692076U
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pump
plunger
outlet
valve
oil
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谢建华
牛鹏
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Beijing Petrochemical Engineering Co Ltd
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Beijing Petrochemical Engineering Co Ltd
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Abstract

The utility model discloses a kind of plunger reciprocating pump and system thereof, this plunger reciprocating pump comprises the pump housing, conduit, enters, outlet valve (containing valve ball and valve seat), plunger, plunger overcoat, Stuffing box, filler, steam insulation chuck.This piston reciprocation pumping system except containing except above-mentioned plunger reciprocating pump, also comprises driving, sealing oil, steam insulation, cooling water, lubricant oil and frequency-changing control system, is configured with injection pump, enter, outlet stool and supervisor, enters, exports knock out drum and safety valve.Containing conduit in this plunger reciprocating pump, be configured with injection pump, get through entrance supervisor, thus solving the technical barrier of reciprocating pump inner easily deposition blocking when pumped medium, this plunger reciprocating pump conscientiously can meet Coal Chemical Industry, coal liquifaction and kerosene and the requirement of device being carried high temperature, high pressure, high solids and high viscosity medium such as refine altogether.

Description

A kind of plunger reciprocating pump and system thereof
Technical field
The utility model relates to a kind of plunger reciprocating pump, also relates to a kind of piston reciprocation pumping system.
Background technique
Current China Coal Chemical Industry and oil refining apparatus often use coal slurry pump, but great majority be all delivery temperature lower than 100 DEG C, pressure is less than 5MPa (G), and solid content is lower than 30%wt, and viscosity is less than water coal slurry or the coal of 200mPas.In recent years, due to the rise of coal liquifaction, the Operational Limits of coal slurry pump is more and more to high temperature, high pressure, high solids and full-bodied future development.In ICL for Indirect Coal Liquefaction liquefaction device, the Operational Limits of coal slurry pump is not very harsh, and domestic existing producer can manufacture and design, and has nowadays formed the technology of comparative maturity.But in Direct coal liquefaction device, the Operational Limits of high-pressure coal pulp pump is just harsher, and domestic do not have producer to manufacture and design, and is all adopt imported product.Refine altogether in device at coal-oil, the operation technique parameter of high-pressure coal pulp pump reaches the limit---four high parameters: high temperature, high pressure, high solids and high viscosity.Such pump can not find manufacturer at home, also rarely has the production firm of similar achievement in the world.Therefore, up to the present, coal-oil high-pressure coal pulp pump refined altogether on device does not also have ripe technology.
Coal-oil altogether the high-pressure coal pulp pump refined in device selects centrifugal pump to be not all right.Main cause has: flow is too little, and (minimum discharge only has 16.59m 3/ h), lift too high (reaching 2165m), medium solid content too high (being up to 60%wt), viscosity higher (600mPas), temperature higher (design temperature 290 DEG C), therefore can only select reciprocating pump.
, if be used for carrying this high temperature, high pressure, high solids and full-bodied medium, mainly there is the problem of following several respects in common cylinder-and-piston type reciprocating pump:
1, easily deposit in pump chamber containing solid medium, cause the inlet valve of block pumps, pump cannot be run.
2, plunger and physical contact between media, choice requirement is higher, increases cost.
3, filler only designs twice, can not sealing medium effectively.
4, filler only designs a set of rinse-system, can not rinse better, lubricates, cools, seals and isolate filler.
5, general reciprocating pump can not design steam insulation and cooling water system, and cannot carry out warming-up before driving, the heat that can not intercept fluid end in operation is delivered to power end, can not keep in repair fast again after parking.
6, common reciprocating pump seldom designs a set of petrol station and carries out pressure lubrication to the oily place such as power end, gear-box, and the effect of lubrication, cooling is bad.
7, the entrance supervisor end of common reciprocating pump be all blind extremely, like this, the solid particle in medium is easy to be deposited on that this is local, and the time one is of a specified duration, will block entrance arm (i.e. pump intake), pump cannot normally be worked.
8, inlet valve and outlet valve are all designed with back seat spring, and because medium contains more solid particle, and viscosity is higher, the falling of such ball valve will become very slow, and being fixed on back on seat spring due to valve ball, the solid particle in medium is easy to be deposited in here, causes blocking inlet valve.
9, entrance and exit arm does not design a big syphon, causes containing solid medium not smooth in adapter place circulation, easily blocks.
10 to enter, export knock out drum and be all designed to cylindrical (two end band end sockets) pressurized container, effectively cannot cushion pulsation during high pressure.
Model utility content
The problem of blocking is easily deposited when pumped medium in order to solve existing cylinder-and-piston type reciprocating pump, the utility model provides a kind of plunger reciprocating pump and system thereof, containing conduit in this plunger reciprocating pump, plunger reciprocating pump system layout injection pump, get through entrance supervisor, entrance and exit valve valve ball can move freely on valve seat, thus solve the technical barrier of reciprocating pump inner easily deposition blocking when pumped medium, this plunger reciprocating pump can meet Coal Chemical Industry conscientiously, coal liquifaction and coal-oil are total on the devices such as refining and carry high temperature, high pressure, the requirement of high solids and high viscosity medium.
The utility model solves the technological scheme that its technical problem adopts: a kind of plunger reciprocating pump, comprise the pump housing, the top of the pump housing is provided with outlet, the bottom of the pump housing is provided with entrance, containing pump chamber in the pump housing, containing conduit in this pump chamber, the lower end of conduit is towards the described entrance of the pump housing, the upper end of conduit and the described outlet of the pump housing, described plunger reciprocating pump also comprises the plunger pumped medium in this pump chamber can being sent into conduit.
The axis of conduit is vertically arranged, and the sidewall of conduit lower end is provided with through hole, and conduit lower end is positioned at the lower end of pump chamber.
The axis of plunger is arranged in the horizontal direction, is provided with plunger overcoat and Stuffing box outside plunger, and one end of plunger overcoat is connected with the pump housing, and the other end of plunger overcoat is connected with Stuffing box, and plunger can move back and forth vertically.
Containing filler in Stuffing box, the sidewall of Stuffing box includes the injection through hole for injecting liquid in Stuffing box, injects through hole between described filler and plunger overcoat.
Containing the three road fillers that the axis along plunger from inside to outside sets gradually in Stuffing box, this three roads filler is respectively first filler, second filler and the 3rd road filler; Between first filler and second filler, the sidewall of Stuffing box includes flushing oil entrance for rinsing plunger surface and flushing oil outlet; The inwall of Stuffing box is provided with one section of tapped groove, the cylindrical of this tapped groove and plunger defines a filler and rinses chamber, flushing oil entrance rinses chamber with flushing oil outlet with this filler and is communicated with, between second filler and the 3rd road filler, the sidewall of Stuffing box includes sealing oil entrance for plunger circumferential seal and sealing oil outlet.
Be arranged with steam insulation chuck outside plunger overcoat, form cavity between steam insulation chuck and plunger overcoat, steam insulation chuck is provided with the steam inlet and steam (vapor) outlet that are connected with this cavity.
The pump housing is provided with the aperture for passing into steam or cooling water.
Containing three described pump chambers or five described pump chambers or seven described pump chambers in the pump housing, plunger, plunger overcoat, steam insulation chuck, Stuffing box and described three road fillers and described pump chamber one_to_one corresponding.
This ingress is provided with inlet valve valve ball and inlet valve valve seat, inlet valve valve ball is arranged on inlet valve valve seat, and inlet valve valve ball can move freely, and this outlet port is provided with outlet valve valve ball and outlet valve valve seat, outlet valve valve ball is arranged on outlet valve valve seat, and outlet valve valve ball can move freely.
The material of the described pump housing is two phase stainless steel, the material of described plunger is High Chrome Alloy Steel, the material of described conduit is two phase stainless steel, and the material of described outlet valve valve ball and inlet valve valve ball is two phase stainless steel, and the material of described outlet valve valve seat and inlet valve valve seat is Si Taili stainless steel.
A kind of piston reciprocation pumping system, containing above-mentioned plunger reciprocating pump, the described entrance of pump housing bottom is responsible for entrance by entrance arm and is communicated with, and entrance supervisor is pipeloop.
The described outlet on pump housing top to be responsible for outlet by outlet stool and to be communicated with, and entrance arm and described outlet stool are bend pipe.
This piston reciprocation pumping system is also provided with the injection pump for injecting liquid to the injection through hole of Stuffing box, this injection pump is existing common plunger reciprocating pump, but not plunger reciprocating pump described in the utility model, the pump chamber of injection pump and the pump chamber one_to_one corresponding of plunger reciprocating pump described in the utility model.
This piston reciprocation pumping system is also provided with the sealing oil system for injecting sealing oil to sealing oil entrance, and sealing oil system forms closed circulation system by fuel tank, oil pump, oil strainer, oil cooler, pressure regulator valve, pressure gauge, thermometer.
This piston reciprocation pumping system is also provided with the main pump for delivery technology medium, in the both sides of main pump, is also provided with cooling water pipeline below main pump fluid end and between main pump power end and plunger.
This piston reciprocation pumping system is also provided with a set of lubricating oil system, described lubricating oil system forms closed circulation system by fuel tank, oil pump, oil strainer, oil cooler, pressure controlled valve, pressure transducer, temperature transmitter, differential pressure pickup, and described lubricating oil system can provide lubricant oil to gear-box, main pump power end, injection pump power end.
This piston reciprocation pumping system is also provided with inlet buffer and outlet knock out drum, and inlet buffer is the cylindrical pressure vessel of two end band end sockets, and outlet knock out drum is spherical high-pressure container.
The material of described outlet knock out drum is carbon steel, the corrosion allowance of outlet knock out drum is 6mm, outlet knock out drum is provided with two cut-off valve, safety valve and steam insulation pipeline, the material of described inlet buffer is carbon steel, the corrosion allowance of inlet buffer is 6mm, inlet buffer is provided with two cut-off valve, safety valve and steam insulation pipeline.
The beneficial effects of the utility model are, containing conduit in this plunger reciprocating pump, plunger reciprocating pump system layout injection pump, entrance supervisor is pipeloop, entrance and exit valve valve ball can move freely on valve seat, thus solving the technical barrier of reciprocating pump inner easily deposition blocking when pumped medium, this plunger reciprocating pump conscientiously can meet Coal Chemical Industry, coal liquifaction and kerosene and the requirement of device being carried high temperature, high pressure, high solids and high viscosity medium such as refine altogether.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the structural representation of a pump chamber in plunger reciprocating pump described in the utility model.
Fig. 2 is the schematic diagram of piston reciprocation pumping system described in the utility model.
Fig. 3 is the connection diagram that existing piston reciprocation pumping system center pillar plug reciprocating pump and entrance are responsible for.
Fig. 4 is that piston reciprocation pumping system center pillar plug reciprocating pump described in the utility model is responsible for entrance the schematic diagram be connected.
Fig. 5 is the schematic diagram in F direction in Fig. 4.
Wherein 1. pump housings, 2. coal slurry, 3. conduit, 4. coolant outlet, 5. cooling water inlet, 6. outlet valve valve ball, 7. outlet valve valve seat, 8. pump chamber, 9. steam inlet, 10. plunger overcoat, 11. inject through hole, 12. flushing oil entrances, 13. sealing oil entrances, 14. Stuffing boxes, 15. plungers, 16. the 3rd road fillers, 17. sealing oil outlets, 18. second fillers, 19. flushing oil outlets, 20. first fillers, 21. steam insulation chucks, 22. steam (vapor) outlets, 23. apertures, 24. inlet valve valve balls, 25. inlet valve valve seats, 26. entrance arms, 27. entrance supervisors,
31. variable-frequency motors, 32. coupling and protective housing thereof, 33. gear-boxes, 34. main pump power ends, 35. main pumps, 36. injection pumps, 37. lubricating oil returns, 38. clean VGO, 39. pipeloop loops, 40. outlet knock out drum steam/cooling water inlets, 41. processing medium outlets, 42. injection pump filler flushing oils, 43. inject oil, 44. main pump filler flushing oils, 45. injection pump outlet relief valve, the safety valve of 46. outlet knock out drum configurations, 47. outlet knock out drums, 48. main pump outlet safety valves, 49. main pump fluid ends, 50. main pump flushing oil outlets, 51. main pumps and inlet buffer steam/cooling water inlet, 52. processing medium entrances, the safety valve of 53. inlet buffer configurations, 54. inlet buffer, 55. steam/coolant outlet, 56. lubricant oil fuel feeding, 57. cooling water pipelines, 58. injection pump power ends, 59. injection pump fluid ends, two cut-off valves of 60. outlet knock out drum configurations, two cut-off valves of 61. inlet buffer configurations, the steam insulation pipeline of 62. outlet knock out drum configurations, the steam insulation pipeline of 63. inlet buffer configurations, ,
64. blind plates, 65. dielectric solid sedimentations.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
A kind of plunger reciprocating pump, comprise the pump housing 1, the top of the pump housing 1 is provided with outlet, the bottom of the pump housing 1 is provided with entrance, containing pump chamber 8 in the pump housing 1, containing conduit 3 in this pump chamber 8, the lower end of conduit 3 is towards the described entrance of the pump housing 1, the upper end of conduit 3 and the described outlet of the pump housing 1, described plunger reciprocating pump also comprises the plunger 15 pumped medium in this pump chamber 8 can being sent into conduit 3, as shown in Figure 1.
The axis of plunger 15 is arranged in the horizontal direction, plunger 15 can move back and forth vertically, namely plunger 15 can move back and forth along the left and right directions in Fig. 1, plunger overcoat 10 and Stuffing box 14 is provided with outside plunger 15, one end of plunger overcoat 10 is connected with the pump housing 1, and the other end of plunger overcoat 10 is connected with Stuffing box 14.As shown in Figure 1, when plunger 15 is moved to the left, can by pumped medium (or processing medium) as coal slurry 2 sucks in pump chamber 8 by the entrance of the bottom of the pump housing 1, due to the effect of gravity, solid particulate matter in coal slurry 2 easily deposits in the bottom of pump chamber 8, conduit 3 lower end is positioned at the lower end of pump chamber 8, when plunger 15 moves right, then the coal slurry 2 of the bottom of pump chamber 8 is discharged from this outlet by the inside of conduit 3 and the upper end of conduit 3 successively by preferentially entering in conduit 3 again, in the process, the solid particulate matter of the bottom deposition of pump chamber 8 also will be entered conduit 3 by fluid driven and discharge, thus solve the technical barrier of reciprocating pump inner easily deposition blocking when pumped medium.In the present embodiment, the axis of conduit 3 is vertically arranged, and the sidewall of conduit 3 lower end is provided with through hole, and conduit 3 lower end is positioned at the lower end of pump chamber 8.
In the present embodiment, containing filler in Stuffing box 14, the sidewall of Stuffing box 14 includes the injection through hole 11 for injecting liquid in Stuffing box 14, injects through hole 11 between described filler and plunger overcoat 10.In the return stroke of plunger 15 (i.e. in the process of left side movement in Fig. 1), the injection pump 36 be connected with the bent axle of main pump 35 by one is injected into micro-gap between the inwall of Stuffing box 14 and plunger 15 external diameter by injecting oil (clean VGO38) via the injection through hole 11 on Stuffing box 14, can effectively stop so up to walk containing solid coal slurry 2, thus in pump chamber 8, define a coal slurry 2 and inject oily separating surface, as shown in Figure 1, the top in pump chamber 8 is coal slurry 2 for injecting oily bottom.Therefore, the front end of plunger 15 does not contact coal slurry 2, and it just contacts injects oil, substantially increases the working life of plunger 15 like this, but also reduces the choice requirement of plunger.Because plunger 15 does not contact with processing medium, only contact with injection oil, therefore its choice requirement is lower, only selects chromium steel just can meet the demands, does not need to select two phase stainless steel.Injection pump inlet pressure 1.0MPa (G), outlet pressure 24.3MPa (G), VGO temperature 100 DEG C.
In existing technological scheme, great majority do not design injection pump.Wherein design the scheme of injection pump, also just in the return stroke of plunger, pass through an injection pump be connected with main pump bent axle, injection oil is injected in separate cavities through the micro-gap between the inwall and plunger outer diameter of Stuffing box.Here key difference is, the separate cavities that they are arranged is not in pump chamber, but is located on the inwall of Stuffing box.So just make the fore-end of plunger must contact with coal slurry.Due to the complexity of coal slurry medium, use and the selection of plunger must be had influence on.Therefore, the plunger in this design proposal must select two phase stainless steel.
In the present embodiment, from inside to outside set gradually three road fillers containing the axis along plunger 15 in Stuffing box 14, this three roads filler is respectively first filler 20, second filler 18 and the 3rd road filler 16, as shown in Figure 1; Between first filler 20 and second filler 18, the sidewall of Stuffing box 14 includes flushing oil entrance 12 for rinsing plunger 15 surface and flushing oil outlet 19, in Stuffing box 14 body, position is between first filler 20 and second filler 18, machined the female groove of a length of tape, the i.e. groove of internal screw thread form, the cylindrical of tapped groove and plunger 15 just defines a filler and rinses chamber, flushing oil entrance 12 rinses chamber with flushing oil outlet 19 with this filler and is communicated with, and can rinse better, lubricates, cools and isolate like this to filler.Because the outlet pressure of injection pump 36 is higher, the VGO of injection has and enters filler by first filler 20 on a small quantity and rinse chamber, and through decline of pressure, the pressure rinsed in chamber is significantly less than the outlet pressure of injection pump.Therefore, the pressure of rinse-system is: entrance 1.0MPa, outlet 1.0MPa, rinses VGO temperature and is also 100 DEG C.
In existing rinse-system design proposal, all do not design a female lining of band, directly that the micro-gap that the external diameter of Stuffing box internal diameter and plunger is formed realizes rinsing, such developing result does not have above-mentioned design proposal good, is all not so good as above-mentioned design proposal to the aspect such as flushing, cooling, lubrication, isolation, sealing of filler.
In the present embodiment, between second filler 18 and the 3rd road filler 16, the sidewall of Stuffing box 14 includes sealing oil entrance 13 for plunger 15 circumferential seal and sealing oil outlet 17.The effect of sealing oil system is spacer fluid and the lubricant oil stopping the minute quantity that power end is come.Rinse the VGO in chamber, can very little be leaked in Seal cage by second filler, in order to abundant spacer fluid VGO does not allow it leak to Seal cage, the pressure of Seal cage should exceed 0.1 ~ 0.2MPa (G) than the pressure rinsing chamber, namely in sealing oil system, the outlet pressure of sealing oil pump should be 1.1 ~ 1.2MPa, and the temperature of sealing oil is normal temperature.Sealing oil system capital equipment has: oil pump, safety valve, fuel tank, oil strainer, oil cooler, pressure regulator valve, pressure gauge, thermometer etc.Sealing system forms a closed circulation system by these equipment, provides sealing oil incessantly to Seal cage.This cover sealing system is not designed in the design of common reciprocating pump.
In the present embodiment, Stuffing box 14 li devises three road fillers, and first filler 20 is made up of 5 packing rings, and second filler 18 and the 3rd road filler 16 form by 3 packing rings.The material that filler must select heat resistant and wear resistant to lose is made.The flushing of filler, lubrication, cooling, sealing and isolation are realized by aforementioned injection, flushing, sealing three digest journals, guarantees the working life of filler.The design of common reciprocating pump only has twice filler, does not have design the 3rd road filler.
Be arranged with the steam insulation chuck 21 in band labyrinth outside plunger overcoat 10, form cavity between steam insulation chuck 21 and plunger overcoat 10, steam insulation chuck 21 is provided with the steam inlet 9 and steam (vapor) outlet 22 that are connected with this cavity, as shown in Figure 1.Because the temperature of processing medium is high, the object arranging vapour system carrys out warming-up with it before driving, is incubated in running with it, and parking maintenance passes into cooling water with it pump is lowered the temperature as early as possible.As shown in Figure 1, steam insulation system is all devised in the front end (right side namely in figure) of the pump housing 1 and plunger 15.Pump case between the outside of the pump housing 1 and pump chamber 8 machined a some holes, be used for passing into steam or cooling water to reach the object of warming-up, insulation and cooling.In addition, on inlet/outlet knock out drum and on the pipeline of principal goods stream warp, also steam insulation system is all provided with.As shown in Figure 2.In the prior art, be all in pump body design insulation jacket, not to plunger Front-end Design insulation jacket.
For reciprocating pump, normal flow rate 33.2m 3/ h, peak rate of flow 55.2m 3/ h, this is obviously bigger than normal.Therefore this pump must adopt the design proposal of three cylinders, five cylinders or seven cylinders.In order to reduce pulsation, and consider manufacture cost, the present embodiment adopts five cylinder design proposals.Namely in the pump housing 1 containing three described pump chambers 8 or five described pump chambers 8 or seven described pump chambers 8, plunger 15, plunger overcoat 10, steam insulation chuck 21, Stuffing box 14 and filler (20,18,16) and described pump chamber 8 one_to_one corresponding, namely the quantity of plunger 15 is identical with the quantity of described pump chamber 8.The pump housing 1 adopts solid forging to form, and five pump chambers 8 (cylinder body) adopt machining shaping.Pump case is processed some apertures, in order to logical steam or cooling water.
For the ease of entering, outlet valve interchangeability of parts, enter, the design size of outlet valve should be consistent.Due to solid content higher in medium, and the viscosity of medium is higher again, have a strong impact on the falling of valve ball, therefore, enter, outlet valve is all designed with valve ball and valve seat, but design back seat spring, valve ball is a free body, can move freely in pump chamber, this also just efficiently avoid deposition of solid herein.Specifically, this ingress is provided with inlet valve valve ball 24 and inlet valve valve seat 25, inlet valve valve ball 24 is arranged on inlet valve valve seat 25, inlet valve valve ball 24 can move freely arbitrarily, this outlet port is provided with outlet valve valve ball 6 and outlet valve valve seat 7, outlet valve valve ball 6 is arranged on outlet valve valve seat 7, and outlet valve valve ball 6 can move freely arbitrarily, as shown in Figure 1.
A kind of piston reciprocation pumping system, as shown in Figure 2, containing above-mentioned plunger reciprocating pump, the described entrance of the pump housing 1 bottom is responsible for 27 by entrance arm 26 with entrance and is communicated with, and entrance supervisor 27 is pipeloop.
Because pumped medium solid content is higher, solid content is up to 60%, if by common reciprocating pump design proposal, entrance supervisor end blind plate 64 blind dead (as shown in Figure 3), so can get more and more, until the inlet duct of the 5th cylinder is blocked, if do not processed at the solid particle (dielectric solid sedimentation 65) of this local sedimentation, successively the inlet duct of all the other four cylinders all will be blocked, cause pump to work.In order to address this problem, as shown in Figure 4, blind plate is got through by the utility model (or not having blind plate), devise a pipeloop, namely entrance supervisor 27 is pipeloop, and medium circulation is flowed, and the loop of pipeloop can be connected in the entrance of pump or the lower container of pressure, like this, the solid particle in medium just cannot have been piled up at blind plate place.
In the present embodiment, the described outlet on the pump housing 1 top to be responsible for outlet by outlet stool and to be communicated with, and entrance arm 26 and described outlet stool are bend pipe, as shown in Figure 5.Entrance arm 26 and described outlet stool are all designed to bend pipe, and it is equivalent to the function of expansion joint, effectively can not only prevent the pump chamber thermal expansion produced due to high temperature, can also alleviate the pump housing vibration produced owing to entering, exporting valve ball unrestricted motion.
In the present embodiment, in order to meet pumped medium high temperature, high pressure, high solids and full-bodied feature, consider that pumped medium also has corrosivity, the described pump housing 1 adopts two phase stainless steel, described plunger 15 adopts High Chrome Alloy Steel, described conduit 3 adopts two phase stainless steel, described outlet valve valve ball 6 and inlet valve valve ball 24 adopt two phase stainless steel, described outlet valve valve seat 7 and inlet valve valve seat 25 adopt Si Taili stainless steel, and described outlet knock out drum 47 and inlet buffer 54 adopt carbon steel (6mm got by corrosion allowance).
In addition, this piston reciprocation pumping system is also containing following system and parts:
1, drive system
In order to provide power to this piston reciprocation pumping system, this plunger reciprocating pump system layout drive system, is made up of variable-frequency motor 31, coupling and protective housing thereof 32, gear-box 33.By gear-box 33, the rotating speed of motor is reduced, then by pump power end, slow-revving rotary motion is become to-and-fro motion, thus drive plunger 15 is reciprocating.As shown in Figure 2.
2, cooling water system
In order to prevent when termination of pumping is overhauled, pump body heat cannot distribute rapidly in a short time, causes the surface of pump too boiling hot and cannot carry out maintenance construction, passing into cooling water to lower the temperature in the pipeline of pump vapour system.In the running of pump, in order to prevent the heat conduction of high temperature media in pump to power end, before the both sides, fluid end of pump, between plunger and power end, devise cooling water pipeline.As shown in Figure 2.
3, lubricating oil system
Main pump power end 34, the lubrication of injection pump power end 58 and gear-box 33 adopts a set of petrol station to carry out pressure lubrication, the capital equipment of petrol station has: oil pump, safety valve, oil cooler, oil strainer, pressure controlled valve, pressure transducer, temperature transmitter etc., in fig. 2, the top of plunger reciprocating pump (containing main pump 35 and standby pump 36) is power end (main pump power end 34, injection pump power end 58), the bottom of plunger reciprocating pump is fluid end (main pump fluid end 49, injection pump fluid end 59).Petrol station is a closed circulation system, and incessantly to main pump power end 34, injection pump power end 58 and gear-box 33 provide lubricant oil.
In the design proposal of common reciprocating pump, a set of force-feed lubrication system seldom can be adopted to carry out pressure lubrication to power end and gear-box, just utilize the oil in power end and gear-box to carry out lubrication and cooling, have in order to safety a bit, just coil pipe is set in power end and gear-box, pass into steam or cooling water to reach the object of heating or cooling, the be far from Scheme Security of a set of petrol station of above-mentioned design of this scheme is reliable.
4, enter, export knock out drum
Inlet buffer 54 is designed to the cylindrical pressure vessel of two end band end sockets, and design pressure loss is less than 0.15MPa (G), and pressure pulsation is less than 0.1MPa (G).Material selection carbon steel, corrosion allowance is 6mm, and design pressure is 2.5MPa (G), and design temperature is 290 DEG C, configuration two cut-off valve, safety valve and steam tracing pipeline.
Outlet knock out drum 47 is designed to spherical, effectively can alleviate the pressure pulsation of pump discharge.Design pressure loss is less than 0.5MPa (G), and pressure pulsation is less than 0.5MPa (G).Material selection carbon steel, corrosion allowance is 6mm, design pressure 30MPa (G), design temperature 290 DEG C.Configuration two cut-off valve, safety valve and steam tracing pipeline.
5, safety valve
The outlet of each cylinder body of main pump configures a safety valve 48, and injection pump each cylinder body outlet configuration safety valve 45, inlet buffer configures a safety valve 53, a configuration safety valve 46 after outlet knock out drum.The design of safety valve will take into full account solid content and the cracking pressure of medium.
6, frequency-changing control system
Due to the flow adjustment range comparatively large (30 ~ 100%) of this pump, in order to realize the object of saving energy and reduce the cost, adopt frequency-changing control system.Change rotating speed by the frequency of Frequency Converter Control power supply, thus reach the object of adjust flux.
The above; be only specific embodiment of the utility model, the scope of model utility enforcement can not be limited with it, so the displacement of its equivalent assemblies; or the equivalent variations to do according to the utility model scope of patent protection and modification, all still should belong to the category that this patent is contained.In addition, the technical characteristics in the utility model and all can using by independent assortment between technical characteristics, between technical characteristics and technological scheme, between technological scheme and technological scheme.

Claims (18)

1. a plunger reciprocating pump, it is characterized in that, described plunger reciprocating pump comprises the pump housing (1), the top of the pump housing (1) is provided with outlet, the bottom of the pump housing (1) is provided with entrance, containing pump chamber (8) in the pump housing (1), containing conduit (3) in this pump chamber (8), the lower end of conduit (3) is towards the described entrance of the pump housing (1), the upper end of conduit (3) and the described outlet of the pump housing (1), described plunger reciprocating pump also comprises the plunger (15) pumped medium in this pump chamber (8) can being sent into conduit (3).
2. plunger reciprocating pump according to claim 1, it is characterized in that, the axis of conduit (3) is vertically arranged, and the sidewall of conduit (3) lower end is provided with through hole, and conduit (3) lower end is positioned at the lower end of pump chamber (8).
3. plunger reciprocating pump according to claim 1, it is characterized in that, the axis of plunger (15) is arranged in the horizontal direction, plunger (15) outside is provided with plunger overcoat (10) and Stuffing box (14), one end of plunger overcoat (10) is connected with the pump housing (1), the other end of plunger overcoat (10) is connected with Stuffing box (14), and plunger (15) can move back and forth vertically.
4. plunger reciprocating pump according to claim 3, it is characterized in that, containing filler in Stuffing box (14), the sidewall of Stuffing box (14) includes the injection through hole (11) for injecting liquid in Stuffing box (14), injects through hole (11) and is positioned between described filler and plunger overcoat (10).
5. plunger reciprocating pump according to claim 4, it is characterized in that, from inside to outside set gradually three road fillers containing the axis along plunger (15) in Stuffing box (14), this three roads filler is respectively first filler (20), second filler (18) and the 3rd road filler (16);
Between first filler (20) and second filler (18), flushing oil entrance (12) and flushing oil that the sidewall of Stuffing box (14) includes for rinsing plunger (15) surface export (19), the inwall of Stuffing box (14) is provided with one section of tapped groove, the cylindrical of this tapped groove and plunger (15) defines a filler and rinses chamber, and flushing oil entrance (12) rinses chamber with flushing oil outlet (19) with this filler and is communicated with;
Between second filler (18) and the 3rd road filler (16), the sidewall of Stuffing box (14) includes sealing oil entrance (13) for plunger (15) circumferential seal and sealing oil outlet (17).
6. plunger reciprocating pump according to claim 5, it is characterized in that, steam insulation chuck (21) is arranged with outside plunger overcoat (10), form cavity between steam insulation chuck (21) and plunger overcoat (10), steam insulation chuck (21) is provided with the steam inlet (9) and steam (vapor) outlet (22) that are connected with this cavity.
7. plunger reciprocating pump according to claim 1, is characterized in that, the pump housing (1) is provided with the aperture (23) for passing into steam or cooling water.
8. plunger reciprocating pump according to claim 6, it is characterized in that, containing three described pump chambers (8) or five described pump chambers (8) or seven described pump chambers (8) in the pump housing (1), plunger (15), plunger overcoat (10), steam insulation chuck (21), Stuffing box (14) and described three road fillers and described pump chamber (8) one_to_one corresponding.
9. plunger reciprocating pump according to claim 1, it is characterized in that, this ingress is provided with inlet valve valve ball (24) and inlet valve valve seat (25), inlet valve valve ball (24) is arranged on inlet valve valve seat (25), inlet valve valve ball (24) can move freely, this outlet port is provided with outlet valve valve ball (6) and outlet valve valve seat (7), outlet valve valve ball (6) is arranged on outlet valve valve seat (7), and outlet valve valve ball (6) can move freely.
10. plunger reciprocating pump according to claim 9, it is characterized in that, the material of the described pump housing (1) is two phase stainless steel, the material of described plunger (15) is High Chrome Alloy Steel, the material of described conduit (3) is two phase stainless steel, the material of described outlet valve valve ball (6) and inlet valve valve ball (24) is two phase stainless steel, and the material of described outlet valve valve seat (7) and inlet valve valve seat (24) is Si Taili stainless steel.
11. 1 kinds of piston reciprocation pumping systems, it is characterized in that, this piston reciprocation pumping system contains plunger reciprocating pump according to claim 1, the described entrance of the pump housing (1) bottom is responsible for (27) by entrance arm (26) and is communicated with entrance, entrance supervisor (27) is pipeloop.
12. piston reciprocation pumping systems according to claim 11, is characterized in that, the described outlet on the pump housing (1) top to be responsible for outlet by outlet stool and to be communicated with, and entrance arm (26) and described outlet stool are bend pipe.
13. piston reciprocation pumping systems according to claim 11, it is characterized in that, this piston reciprocation pumping system is also provided with injection pump (36) from liquid to the injection through hole (11) of Stuffing box (14), the pump chamber of injection pump (36) and pump chamber (8) one_to_one corresponding of described plunger reciprocating pump for injecting.
14. piston reciprocation pumping systems according to claim 11, it is characterized in that, this piston reciprocation pumping system is also provided with the sealing oil system for injecting sealing oil to sealing oil entrance (13), and sealing oil system forms closed circulation system by fuel tank, oil pump, oil strainer, oil cooler, pressure regulator valve, pressure gauge, thermometer.
15. piston reciprocation pumping systems according to claim 11, it is characterized in that, this piston reciprocation pumping system is also provided with the main pump (35) for delivery technology medium, in the both sides of main pump (35), below main pump fluid end (49) and between main pump power end (34) and plunger (15), be also provided with cooling water pipeline (57).
16. piston reciprocation pumping systems according to claim 11, it is characterized in that, this piston reciprocation pumping system is also provided with a set of lubricating oil system, described lubricating oil system forms closed circulation system by fuel tank, oil pump, oil strainer, oil cooler, pressure controlled valve, pressure transducer, temperature transmitter, differential pressure pickup, and described lubricating oil system can provide lubricant oil to gear-box (33), main pump power end (34), injection pump power end (58).
17. piston reciprocation pumping systems according to claim 11, it is characterized in that, this piston reciprocation pumping system is also provided with inlet buffer (54) and outlet knock out drum (47), inlet buffer (54) is the cylindrical pressure vessel of two end band end sockets, and outlet knock out drum (47) is spherical high-pressure container.
18. piston reciprocation pumping systems according to claim 17, it is characterized in that, the material of described outlet knock out drum (47) is carbon steel, the corrosion allowance of outlet knock out drum (47) is 6mm, outlet knock out drum (47) is provided with two cut-off valve (60), safety valve (46) and steam insulation pipeline (62), the material of described inlet buffer (54) is carbon steel, the corrosion allowance of inlet buffer (54) is 6mm, inlet buffer (54) is provided with two cut-off valve (61), safety valve (53) and steam insulation pipeline (63).
CN201520443034.8U 2015-06-25 2015-06-25 A kind of plunger reciprocating pump and system thereof Active CN204692076U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017269A (en) * 2018-11-09 2019-07-16 何巨堂 Tri- material filling type reciprocation sealing of Qiang and its reciprocating pump are rinsed with pressurization is intermediate
CN110017256A (en) * 2018-10-10 2019-07-16 何巨堂 A kind of cylinder-and-piston type reciprocating pump
CN110017271A (en) * 2018-11-18 2019-07-16 何巨堂 The plunger face of high pressure filling contact has the piston reciprocation of diamond coatings to seal
CN110017272A (en) * 2018-11-16 2019-07-16 何巨堂 Use the piston reciprocation sealing of four packing seals and its reciprocating pump
CN112302896A (en) * 2020-11-12 2021-02-02 中国神华煤制油化工有限公司鄂尔多斯煤制油分公司 Reciprocating pump for conveying high-temperature high-pressure solid-containing medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017256A (en) * 2018-10-10 2019-07-16 何巨堂 A kind of cylinder-and-piston type reciprocating pump
CN110017269A (en) * 2018-11-09 2019-07-16 何巨堂 Tri- material filling type reciprocation sealing of Qiang and its reciprocating pump are rinsed with pressurization is intermediate
CN110017272A (en) * 2018-11-16 2019-07-16 何巨堂 Use the piston reciprocation sealing of four packing seals and its reciprocating pump
CN110017271A (en) * 2018-11-18 2019-07-16 何巨堂 The plunger face of high pressure filling contact has the piston reciprocation of diamond coatings to seal
CN112302896A (en) * 2020-11-12 2021-02-02 中国神华煤制油化工有限公司鄂尔多斯煤制油分公司 Reciprocating pump for conveying high-temperature high-pressure solid-containing medium

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