CN107120316B - A kind of horizontal-type high temperature pump - Google Patents

A kind of horizontal-type high temperature pump Download PDF

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Publication number
CN107120316B
CN107120316B CN201710522726.5A CN201710522726A CN107120316B CN 107120316 B CN107120316 B CN 107120316B CN 201710522726 A CN201710522726 A CN 201710522726A CN 107120316 B CN107120316 B CN 107120316B
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China
Prior art keywords
temperature
mechanical seal
horizontal
sealed letter
chamber
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CN201710522726.5A
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Chinese (zh)
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CN107120316A (en
Inventor
孙敏
牛红军
高国红
卢昭
周太勇
赵亮
李波
赵芳
孙德臣
孔令杰
徐晓冬
商丽
李娟娟
许德忠
屈婷婷
尤洋
司洪超
谷云鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENYANG BLOWER WORKS GROUP NUCLEAR POWER PUMP CO Ltd
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SHENYANG BLOWER WORKS GROUP NUCLEAR POWER PUMP CO Ltd
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Priority to CN201710522726.5A priority Critical patent/CN107120316B/en
Publication of CN107120316A publication Critical patent/CN107120316A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/586Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/08Sealings
    • F04D29/10Shaft sealings
    • F04D29/106Shaft sealings especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/08Sealings
    • F04D29/10Shaft sealings
    • F04D29/12Shaft sealings using sealing-rings
    • F04D29/126Shaft sealings using sealing-rings especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts

Abstract

The present invention discloses a kind of horizontal-type high temperature pump, is related to the structure-design technique field of high-temperature pump, is internally provided with cooling chamber in sealed letter body;Main shaft is provided with axle sleeve through sealed letter body, and through mechanical seal and connection and driving device, the other end is provided with impeller for one end, and impeller and driving device are respectively arranged at the two sides of sealed letter body;High-temperature medium chamber is the first space that impeller and sealed letter body are encircled into;Mechanical seal chamber is that mechanical seal and sealed letter body surround the second space to be formed;It is provided with sealing ring between the axle sleeve and sealed letter body on main shaft between high-temperature medium chamber and mechanical seal chamber, the first pre-determined distance is provided between sealing ring and axle sleeve, sealing ring is axially provided with the first preset length along main shaft.Horizontal-type high temperature pump of the invention can effectively inhibit the raising of mechanical seal chamber temperature under stand-by state, ensure the sealing effect of mechanical seal and the safety of production.

Description

A kind of horizontal-type high temperature pump
Technical field
The present invention relates to the structure-design technique fields of high-temperature pump, pump in particular to a kind of horizontal-type high temperature.
Background technique
The high-temperature pump for conveying high temperature fluid medium, in its operation, by including in the mechanical seal chamber that is formed of mechanical seal High temperature fluid medium be sent in the external cooler of high-temperature pump and carry out heat exchange, the high temperature fluid medium reflux after cooling Into mechanical seal chamber, the circulation of fluid medium that temperature reduces takes away the heat that friction generates, and maintains mechanical seal chamber lower Temperature levels;When equipment is in stand-by state, the intracavitary medium of mechanical seal is stationary, at this moment, due to high temperature in pumping Fluid media (medium) it is temperature-resistant, cool down without the external cooler high temperature fluid medium intracavitary to mechanical seal, high temperature High temperature fluid medium in pump can (include that high temperature fluid medium is flowed into/flowed in each intracavitary progress microfluidic of connection among these Mechanical seal chamber out), the temperature of mechanical seal chamber can persistently increase even more than machine as the stopping of external cooler is cooling The alarm temperature of tool sealing, and if the o-ring in the mechanical seal that is closely related with mechanical seal chamber is constantly in the condition of high temperature It can then accelerate its aging to deform, to reduce the sealing effect of mechanical seal, shorten the service life of mechanical seal, to life Production causes a degree of risk.
Summary of the invention
It is an object of the invention to solve above-mentioned deficiency in the prior art, providing one kind can slow down in the stand-by state The raised horizontal-type high temperature pump of mechanical seal chamber temperature.
The purpose of the present invention is by following technical solution: a kind of horizontal-type high temperature pump is wrapped for conveying high temperature fluid medium It includes: the pump housing;Sealed letter body, is set to pump body, is internally provided with cooling chamber in sealed letter body;Main shaft is provided with axle sleeve, passes through Sealed letter body is worn, through mechanical seal and connection and driving device, the other end is provided with impeller, impeller and driving device point for one end It is not set to the two sides of sealed letter body;The first space that high-temperature medium chamber, impeller and sealed letter body are encircled into;Mechanical seal chamber, Mechanical seal and sealed letter body surround the second space to be formed;The axis on main shaft between high-temperature medium chamber and mechanical seal chamber It is provided with sealing ring between set and sealed letter body, the first pre-determined distance is provided between sealing ring and axle sleeve, sealing ring is along main shaft Axially it is provided with the first preset length.
In above scheme preferably, sealing ring is fixedly mounted in the channel of the main shaft of sealed letter body.
In any of the above-described scheme preferably, mechanical seal and main shaft are coaxially fixed on sealed letter body, in machinery The internal circumferential direction along main shaft of sealing is provided with pumping ring.
In any of the above-described scheme preferably, it pumps on ring and is provided with pumping installations, it will when for horizontal-type high temperature pump operation High temperature fluid in mechanical seal chamber is pumped to cooler and carries out heat exchange.
In any of the above-described scheme preferably, it is provided with the first keyway on main shaft, is provided on axle sleeve and the first key Organic envelope axle sleeve is arranged in the slot that slot matches in mechanical seal, and pumping ring is fixed on machine envelope axle sleeve, on machine envelope axle sleeve It is provided with the second keyway, main shaft is sealed axle sleeve with axle sleeve, machine respectively by key and connect and rotate synchronously with axle sleeve, pumping ring.
In any of the above-described scheme preferably, coolant inlet runner, cooling liquid outlet stream are provided in sealed letter body Road, cooling liquid inlet runner are connected to cooling chamber and sealed letter body exterior space with cooling liquid outlet runner.
In any of the above-described scheme preferably, further include bearing, be set between sealed letter body and driving device, for holding By the radial load and axial load of main shaft.
In any of the above-described scheme preferably, bearing is provided with fixing seat, and bearing is fixedly connected on fixation by fastener On seat.
In any of the above-described scheme preferably, it pumps on ring and is provided with pumping installations, it will when for horizontal-type high temperature pump operation The cooler that high temperature fluid in mechanical seal chamber is pumped to peripheral hardware returns to mechanical seal chamber forming circuit after carrying out heat exchange.
Sealing ring is arranged in the channel of the main shaft of sealed letter body in horizontal-type high temperature pump provided by the invention, is sealed by adjusting Gap and sealing ring between ring and axle sleeve along main-shaft axis direction length, to adjust mechanical seal chamber and high-temperature medium The circulation of high temperature fluid medium between chamber, it is close to machinery that limitation horizontal-type high temperature pumps the high temperature fluid medium in high temperature dielectric cavity It is flowed in envelope chamber, cooperation sealed letter body partition high-temperature medium chamber carries out heat transfer into mechanical seal chamber, avoids horizontal-type high temperature The mechanical seal chamber of pump in the stand-by state since temperature raises caused by mechanical seal O-ring accelerated ageing, extend The service life of horizontal-type high temperature pump, has been turned up the safety of production.
Detailed description of the invention
Fig. 1 is the partial structure diagram that horizontal-type high temperature of the invention pumps preferred embodiment;
The temperature difference of the Fig. 2 between the mechanical seal chamber and high-temperature medium chamber of the pump of horizontal-type high temperature in the prior art is with stand-by state Figure is moved towards in the variation of time;
Fig. 3 is that horizontal-type high temperature of the invention pumps between the chamber of preferred embodiment mechanical seal shown in Fig. 1 and high-temperature medium chamber The temperature difference moves towards figure with the variation of stand-by state time;
Fig. 4 is that horizontal-type high temperature of the invention pumps the chamber of preferred embodiment mechanical seal shown in Fig. 1 under different gap length Temperature change moves towards figure, wherein solid line represents the temperature change compared with short air gap, and dotted line indicates the temperature change compared with long gap;
Fig. 5 is that horizontal-type high temperature of the invention pumps between the chamber of preferred embodiment mechanical seal shown in Fig. 1 and high-temperature medium chamber Figure is moved towards in variation of the temperature difference under different gap orifice size, wherein the length of sealing ring is identical.
Appended drawing reference:
1- sealed letter body;2- main shaft;3- mechanical seal;4- bearing;
5- impeller;6- sealing ring;7- key;The external cooler of 8-;
11- cooling chamber;12- high-temperature medium chamber;13- coolant inlet runner;
14- cooling liquid outlet runner;21- axle sleeve;31- mechanical seal chamber;
41- fixing seat.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the preferred embodiment of the present invention In attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or Similar label indicates same or similar element or element with the same or similar functions.Described embodiment is this hair Bright a part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to It is used to explain the present invention, and is not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention. The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown is merely for convenience of description the present embodiment and simplifies description, rather than indication or suggestion meaning Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the present embodiment The limitation of protection scope.
For conveying the high-temperature pump of high-temperature medium, wherein most typical pump for industrial pump, used in nuclear power station, wherein for fire Motor group feed pump, fore pump, the residual heat removal pump of used in nuclear power station, main feed pump, drainage pump etc. are all conveying high-temperature mediums High-temperature pump.The present embodiment is to solve high-temperature pump machinery seal chamber temperature in stand-by state in the prior art to be stepped up influence The technical issues of high-temperature pump service life and production safety, provides a kind of horizontal-type high temperature pump.
Referring to Fig.1, horizontal-type high temperature pump provided in this embodiment, for conveying high temperature fluid medium, comprising: the pump housing;Sealing Letter body 1, is set to pump body, is internally provided with cooling chamber 11 in sealed letter body 1;Main shaft 2 is provided with axle sleeve 21, through close Packing body 1, through mechanical seal 3 and connection and driving device, the other end is provided with impeller 5, impeller 5 and driving device point for one end It is not set to the two sides of sealed letter body 1;The first space that high-temperature medium chamber 12, impeller 5 and sealed letter body 1 are encircled into;It is mechanical close Chamber 31 is sealed, mechanical seal 3 and sealed letter body 1 surround the second space to be formed;High-temperature medium chamber 12 and mechanical seal chamber 31 it Between main shaft 2 on axle sleeve 21 and sealed letter body 1 between be provided with sealing ring 6, be provided with first between sealing ring 6 and axle sleeve 2 Pre-determined distance, sealing ring 6 are axially provided with the first preset length along main shaft 2.
As known to those skilled in the art, mechanical seal 3 is by a pair of or several to perpendicular to main shaft 2 and opposite sliding End face keeps being bonded under the elastic force or magneticaction of Fluid pressure and compensation mechanism and is equipped with auxiliary seal and reaches Drain Resistance Gland seal device.In horizontal-type high temperature pump operation, this pair of or several pairs of end face is at runtime because friction generates heat, and heat is by machinery Pumping ring in sealing 3 is pumped into external cooler 8 and exchanges heat, and it is intracavitary that the cold water after heat exchange returns mechanical seal, is formed One independent circulation, reduces the temperature of seal chamber.In high-temperature pump operational process, 3 one side of mechanical seal is by high-temperature pump The influence temperature of interior high temperature fluid medium increases, and friction generates heat between 3 inner part of another aspect mechanical seal, in order to It ensures the operational efficiency of high-temperature pump and the safety of equipment, external at mechanical seal 3 cooler 8 can be provided with, in horizontal height Cooler 8 runs cool down to mechanical seal 3 simultaneously when warm pump operation, so that the temperature in mechanical seal chamber 31 can maintain Within the scope of one lower temperature, the apparatus structure at mechanical seal 3 not will receive due to temperature it is excessively high caused by poor sealing Or structural failure.But when high-temperature pump stops working or is in stand-by state, still there is high temperature fluid Jie in high-temperature pump Matter, high temperature fluid medium are placed in high-temperature medium chamber 12.When high-temperature pump shuts down, the temperature in mechanical seal chamber 31 is lower than height Temperature in warm dielectric cavity 12.But since what is contained in the high-temperature pump pump housing is high temperature fluid medium, the high temperature fluid medium is logical The gap crossed between sealed letter body 1 and axle sleeve 21, which flows into mechanical seal chamber 31, causes the temperature in mechanical seal chamber 31 to increase, The temperature difference reduces, even more than the alarming value of mechanical seal.Temperature raising in mechanical seal chamber 31 will be to the close of mechanical seal 3 Envelope has an impact, and can reduce the service life of mechanical seal 3 in the condition of high temperature for a long time, influence sealing effect.
A sealing ring 6, sealing are provided between axle sleeve 21 and sealed letter body 1 in horizontal-type high temperature pump provided in this embodiment In the channel that the main shaft 2 that ring 6 is mounted on sealed letter body 1 passes through, and sealing ring 6 is mounted in the channel close to impeller 5 One end.Sealing ring 6 be with transition fit installation set in the channel that the main shaft 2 on sealed letter body 1 passes through, can be and pass through fixation In the channel that part or the mode of spot welding pass through the main shaft 2 that sealing ring 6 is fixed on sealed letter body 1.It is installed by transition fit Fixed mode is mounted on sealed letter body 1 and can exempt using other connectors with spot welding, saves the horizontal of the present embodiment The production material cost and installation cost of high-temperature pump;Sealing ring 6 is mounted on sealed letter body 1 by using connector, is torn open Dress is convenient,, can be by more in order to ensure that the spacing between sealing ring 6 and axle sleeve 21 is constant when using different-diameter main shaft Change the axle sleeve 2 of various outer diameter perhaps different inner diameters sealing ring 6 come complete to match avoid the entire sealed letter body 1 of replacement or The sealing ring 6 to be matched by more cumbersome process means replacement with 21 diameter of axle sleeve.
When installing main shaft 2 on sealed letter body 1 in order to avoid the axle sleeve 21 of sealed letter body 1 and main shaft 2 is pumped in horizontal-type high temperature Interference is generated when operating, is provided with gap between sealed letter body 1 and axle sleeve 21.The gap is connected to high-temperature medium chamber 12 and machinery Seal chamber 31, when horizontal-type high temperature is pumped and operated, high temperature fluid medium can generate microfluidic along the gap, from high-temperature medium chamber 12 In flow in mechanical seal chamber 31, cause the temperature of mechanical seal chamber 31 to increase.In horizontal-type high temperature pump operation, mechanical seal 3 External cooler 8 can be pumped by horizontal-type high temperature to cool down, and the temperature in mechanical seal chamber 31 is made to maintain lower level; For horizontal-type high temperature pump when shutting down or being in stand-by state, high temperature fluid medium still flows to mechanical seal from high-temperature medium chamber 12 Chamber 31, but the external cooler 8 of horizontal-type high temperature pump has shut down under this state, and this will result in mechanical seal chamber 31 not Disconnected to have high temperature fluid medium inflow and the not implementation of cooling measure, the temperature in mechanical seal chamber 31 can be with high temperature fluid The entrance of medium and the heat transmitting generated by high temperature fluid medium constantly increase, the height in final and high-temperature medium chamber 12 The temperature of warm fluid media (medium) is close.
In order to not influence the normal operation of horizontal-type high temperature pump, and when horizontal-type high temperature pumps and shuts down or be in stand-by state The temperature of mechanical seal chamber 31 do not increase excessively, maintain within mechanical seal alarm temperature, when horizontal-type high temperature pump operation Temperature avoids temperature from increasing the sealing effect pumped to the structural damage of mechanical seal 3 and entire horizontal-type high temperature, the present embodiment Horizontal-type high temperature pump is provided with sealing ring 6 between axle sleeve 21 and sealed letter body.It is mounted with after sealing ring 6, axle sleeve 21 and sealing Spacing between letter body reduces, but the size in this gap should guarantee antidetonation demand (the especially horizontal height of nuclear power station use Temperature pump) and the equipment operation demand such as natural bow of rotor in the case where determine, will not both generate axle sleeve 21 and sealed letter body 1 it Between interference, while high temperature fluid medium can also be reduced from high-temperature medium chamber 12 to the flow of the flowing of mechanical seal chamber 31. The normal operation that can have both ensured horizontal-type high temperature pump in this way, also reduces the heat between high-temperature medium chamber 12 and mechanical seal chamber 31 Exchange.
The distance between sealing ring 6 and axle sleeve 21 are the first pre-determined distance, and sealing ring 6 is first along the length of main shaft axial direction Preset length.By adjusting the combination of the first pre-determined distance and the first preset length on horizontal-type high temperature pumps, and cooperate sealed letter The cooling of body 1 can make the temperature of mechanical seal chamber 31 of the horizontal-type high temperature pump in shutdown or stand-by state be maintained at lower water Flat, which is for the temperature of the mechanical seal chamber 31 when not installing sealing ring 6.The horizontal height of the present embodiment Temperature pump includes: first to the raised measure of 31 temperature of mechanical seal chamber is reduced, and cooling chamber 11 is provided in sealed letter body 1, cooling The heat that coolant liquid is passed through in chamber 11 can be reduced between mechanical seal chamber 31 and high-temperature medium chamber 12 is transmitted, i.e. high-temperature medium chamber 12 Interior high temperature fluid medium passes through when being transmitted in sealed letter body 1 by the thermal energy that sealed letter body 1 is transferred to mechanical seal chamber 31 Cooling liquid part in cooling chamber 11 is absorbed and is discharged outside sealed letter body 1, thus play barrier high-temperature medium chamber 12 and machinery it is close Seal the effect of heat transmitting between chamber 31;The second, the distance between sealing ring 6 and axle sleeve 21 are the first pre-determined distance;Third, sealing Ring 6 is the first preset length along the length of main shaft axial direction.
Further, sealing ring 6 is fixedly mounted in the channel of the main shaft 2 of sealed letter body 1.Since horizontal-type high temperature pumps Main shaft 2 is around center axis thereof high-speed rotation, if sealing ring 6 is mounted on axle sleeve 21, it is necessary to be equipped with specific at runtime The sealed letter body 1 of model, if plan reaches the first pre-determined distance of different numerical value, then need to carry out sealed letter body replacement or Person's changing main-spindle, it is not only time-consuming and laborious, but also to reserve various types of sealed letter bodies 1 or main shaft 2.In order to save manpower Cost and the means of production, production cost can be saved by sealing ring being mounted in the channel of the main shaft 2 of sealed letter body 1, Sealing ring 6 need to only be disassembled to the sealing ring 6 for replacing another respective thickness when adjusting the first pre-determined distance of different numerical value , it avoids replacement sealed letter body 1 and main shaft 2, time and labour saving and need to only possess several various sizes of sealing rings 6, Production cost can be more saved relative to replacement sealed letter body 1 or changing main-spindle 2.
Further, mechanical seal 3 and main shaft 2 are coaxially fixed on sealed letter body 1, wherein the rotating ring of mechanical seal It connect with the axle sleeve 21 of main shaft 2 and is rotated synchronously with axle sleeve 21,3 internal circumferential of mechanical seal is provided with pumping ring, in main shaft 2 On be provided with the first keyway, the slot to match with the first keyway is provided on axle sleeve 21, for be fixedly mounted pumping ring Machine envelope axle sleeve on be provided with the second keyway, main shaft is sealed axle sleeve and connect with axle sleeve 21, machine respectively by key 7.Mechanical seal 3 with it is close Packing body 1 constitutes mechanical seal chamber 31.Pumping ring is provided in mechanical seal 3, horizontal-type high temperature pumps in the process of running, machine The higher coolant liquid of temperature is pumped to external cooler 8 and carries out heat exchange in tool seal chamber 31, and temperature reduces, and then pumps again It returns in mechanical seal chamber 31, circulating cooling liquid takes away the heat for the generation that rubs between 3 internal structure end face of mechanical seal to keep Mechanical seal chamber 31 maintains lower temperature, avoids having an impact the O-shaped sealing ring being arranged in mechanical seal 3, to be O-shaped close Seal ring is in the condition of high temperature for a long time and is easy aging, influences the sealing effect and service life of mechanical seal 3.
The first keyway being arranged on main shaft 2 is slot, and not through main shaft 2, the slot setting being arranged on axle sleeve 21 In the inside of axle sleeve 21, the size of the slot is identical as the size of the first keyway on main shaft 2.The first keyway, axis on main shaft 2 Slot on set 21, the second keyway on pumping ring hole be fixed to it and by key 7, make main shaft 2, axle sleeve 21, pumping Ring can rotate synchronously, and efficiently cool down in horizontal-type high temperature pump operation to mechanical seal chamber 31.
Further, coolant inlet runner 13, cooling liquid outlet runner 14, coolant liquid are provided in sealed letter body 1 Inlet channel 13 is connected to cooling chamber 11 and 1 exterior space of sealed letter body with cooling liquid outlet runner 14.Cooling in sealed letter body 1 It is the coolant liquid of flowing in chamber 11, the bulk temperature of sealed letter body 1 can be made to be maintained at a lower level by coolant liquid, though The temperature of entire horizontal-type high temperature pump cannot be reduced, but can prevent the high temperature in high-temperature medium chamber 12 through close to a certain extent Packing body 1, which is transferred in mechanical seal chamber 31, causes the temperature in mechanical seal chamber 31 to increase, and mechanical sealing effect is caused to decline. It is connected with cooling chamber 11 and is provided with coolant inlet runner 13, cooling liquid outlet runner 14, the position being connected to cooling chamber 11 It installs at the maximum two o'clock position of distance in cooling chamber 11, coolant liquid is flowing in cooling chamber 11, and coolant liquid can not Interruption from coolant inlet runner 13 enter cooling chamber 11, then from cooling liquid outlet runner 14 flow out cooling chamber 11, in this way into The coolant liquid for entering cooling chamber 11 can absorb the heat of sealed letter body 1 to the maximum extent (heat is by high-temperature medium chamber 12 Interior high temperature fluid medium is through heat transfer to sealed letter body 1), sealed letter body 1 can prevent the heat in high-temperature medium chamber 12 It is transferred in mechanical seal chamber 31.
Further, horizontal-type high temperature pump provided in this embodiment further includes bearing 4, is set to sealed letter body 1 and driving fills Between setting, for bearing the radial load and axial load of main shaft 2.Bearing 4 is provided with fixing seat 41, and bearing logical 4 crosses fastener It is fixedly connected in fixing seat 41.The effect of bearing 4 is to play a supportive role to main shaft 2, and reduce resistance when main shaft 2 rotates Main shaft 2 caused by fixing seat 41 avoids the pump of horizontal-type high temperature caused by bearing 4 shakes at runtime is arranged in power on bearing 4 Radial deflection causes structure operation troubles.
Sealing ring 6 is arranged on sealed letter body 1 to reduce in mechanical seal chamber 31 in horizontal-type high temperature pump provided in this embodiment Temperature excessively increase the sealing effect of mechanical seal 3 caused to reduce, which implements in actual production, and The effect to be cooled down to its mechanical seal chamber 31 using the pump of horizontal-type high temperature involved in above-described embodiment is clearly.
Horizontal-type high temperature provided in this embodiment pumps in the specific implementation process, due to technical know-how demand, the present embodiment pair Specific engineering project and the concrete model of horizontal-type high temperature pump do not give disclosure, but this has no effect on those skilled in the art couple The understanding of the present embodiment technical solution.The horizontal height of the present embodiment is illustrated with the specific implementation process that certain model horizontal-type high temperature pumps as follows Temperature pump the attainable influence to 31 temperature of mechanical seal chamber.
Table 1 installs comparative experimental data before and after sealing ring on horizontal-type high temperature pump
It can be compared and be obtained by test data recorded in table 1: first, not in horizontal-type high temperature pumps when installation sealing ring 6 It is increased as the temperature that horizontal-type high temperature pumps interior high temperature fluid medium increases the temperature in mechanical seal chamber 31, mechanical seal chamber It is also gradually increased in 31 with the temperature difference of high temperature fluid medium.The difference is that after being mounted with sealing ring 6 in mechanical seal chamber 31 Temperature is low compared with temperature when not installing sealing ring 6, and is mounted with mechanical seal chamber 31 and high temperature fluid medium after sealing ring 6 The temperature difference be gradually increased with the raising of high temperature fluid medium temperature, the raised effect of 31 temperature of limit mechanical seal chamber is brighter It is aobvious.
Medium temperature meaning is the temperature of the high temperature fluid medium in high-temperature medium chamber 12 in pumping in listed data in table 1 Degree, refers to that horizontal-type high temperature pumps temperature change of the not set sealing ring 6 under shutdown or stand-by state before changing, refers to after change Be that horizontal-type high temperature pumps temperature change after installing sealing ring 6 under shutdown or stand-by state, the temperature difference refers to before changing Horizontal-type high temperature pumps not set sealing ring 6 in the temperature under shutdown or stand-by state between mechanical seal chamber 31 and high-temperature medium chamber 12 Difference is spent, the temperature difference refers to that the mechanical seal chamber under shutdown or stand-by state is arranged after sealing ring 6 in horizontal-type high temperature pump after change Temperature gap between 31 and high-temperature medium chamber 12.
Referring to Fig. 2 and Fig. 3, when horizontal-type high temperature pump enters stand-by state, temperature is lower in the prior art, with spare shape The state time gradually extends, and the temperature in mechanical seal chamber 31 gradually rises, and maximum temperature reaches 107 DEG C, if mechanical seal 3 is long-term It is be easy to cause structural damage aging in the temperature, influences mechanical sealing effect;After horizontal-type high temperature provided by the invention pump, The temperature of mechanical seal chamber 31 increases, highest with the extension of stand-by state time after horizontal-type high temperature pump enters stand-by state Temperature reaches 60.2 DEG C, compared with the prior art in mechanical seal chamber 31 can control in a lower temperature, mechanical seal 3 Being in can use the good time to be able to extend compared with the existing technology at this temperature.
In addition to above-mentioned horizontal-type high temperature pump is able to suppress the raised factor of 31 temperature of mechanical seal chamber under stand-by state, ginseng According to data provided in Fig. 4-Fig. 5, the length (axial length of the sealing ring 6 along main shaft 2) and sealing ring 6 of sealing ring 6 with Distance (i.e. first distance) can also influence the temperature change of mechanical seal chamber 31 under stand-by state between axle sleeve 21.
Data in the above chart data and attached drawing are that the application applicant selects after having carried out numerous experiments The partial data taken, wherein the temperature setting of the high temperature fluid medium in test high temperature dielectric cavity 12 is 180 Celsius every time Degree is enough to illustrate that the present invention being capable of bring beneficial effect by test many times.It is learnt by the analysis of mass data, Sealing ring 6 is arranged between axle sleeve 21 and sealed letter body 1 effectively to inhibit the raising of 31 temperature of mechanical seal chamber, and seals Gap size between the length and sealing ring 6 and axle sleeve 21 of ring 6 can also further influence mechanical seal under stand-by state The temperature change of chamber 31, and effect is obvious, is capable of the service life of effective prolonged mechanical sealing 3, improves horizontal-type high temperature pump Sealing effect and the safety of production.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features; And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (8)

1. a kind of horizontal-type high temperature pump, for conveying high temperature fluid medium characterized by comprising
The pump housing;
Sealed letter body (1), is set to the pump body, is internally provided with cooling chamber (11) in the sealed letter body (1);
Main shaft (2) is provided with axle sleeve (21), runs through the sealed letter body (1), one end is through mechanical seal (3) and is connected to drive Dynamic device, the other end are provided with impeller (5), and the impeller (5) and the driving device are respectively arranged at the sealed letter body (1) Two sides;
The first space that high-temperature medium chamber (12), the impeller (5) and the sealed letter body (1) are encircled into;
Mechanical seal chamber (31), the mechanical seal (3) and the sealed letter body (1) surround the second space to be formed;
Axle sleeve (21) on the main shaft (2) between the high-temperature medium chamber (12) and the mechanical seal chamber (31) with it is close Be provided between packing body (1) sealing ring (6), be provided between the sealing ring (6) and the axle sleeve (21) first it is default away from From the sealing ring (6) is axially provided with the first preset length along the main shaft (2).
2. horizontal-type high temperature pump as described in claim 1, which is characterized in that the sealing ring (6) is fixedly mounted on through described In the channel of the main shaft (2) of sealed letter body (1).
3. horizontal-type high temperature pump as described in claim 1, which is characterized in that the mechanical seal (3) and the main shaft (2) are coaxial It is fixed on the sealed letter body (1), the internal circumferential direction along the main shaft (2) of the mechanical seal (3) is provided with pump Send ring.
4. horizontal-type high temperature pump as claimed in claim 3, which is characterized in that be provided with pumping installations on the pumping ring, be used for The high temperature fluid in the mechanical seal chamber (31) is pumped to cooler (8) when the horizontal-type high temperature pump operation and carries out hot friendship It changes.
5. horizontal-type high temperature pump as claimed in claim 3, which is characterized in that it is provided with the first keyway on the main shaft (2), It is provided with the slot to match with first keyway on the axle sleeve, organic envelope axle sleeve is set on the mechanical seal (3), The pumping ring is fixed on the machine envelope axle sleeve, is provided with the second keyway on machine envelope axle sleeve, the main shaft (2) passes through Key (7) connect with the axle sleeve (21), machine envelope axle sleeve respectively and rotates synchronously with the axle sleeve (21), the pumping ring.
6. horizontal-type high temperature pump as described in claim 1, which is characterized in that be provided with coolant liquid in the sealed letter body (1) Entrance channel (13), cooling liquid outlet runner (14), the coolant inlet runner (13) and the cooling liquid outlet runner (14) cooling chamber (11) and sealed letter body (1) exterior space are connected to.
7. horizontal-type high temperature pump as described in claim 1, which is characterized in that further include bearing (4), be set to the sealed letter body (1) between the driving device, for bearing the radial load and axial load of the main shaft (2).
8. horizontal-type high temperature pump as claimed in claim 7, which is characterized in that the bearing (4) is provided with fixing seat (41), described Bearing (4) is fixedly connected on the fixing seat (41) by fastener.
CN201710522726.5A 2017-06-30 2017-06-30 A kind of horizontal-type high temperature pump Active CN107120316B (en)

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