WO2016058454A1 - 一种悬臂式离心泵的冷却液或加热液循环系统 - Google Patents

一种悬臂式离心泵的冷却液或加热液循环系统 Download PDF

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Publication number
WO2016058454A1
WO2016058454A1 PCT/CN2015/088226 CN2015088226W WO2016058454A1 WO 2016058454 A1 WO2016058454 A1 WO 2016058454A1 CN 2015088226 W CN2015088226 W CN 2015088226W WO 2016058454 A1 WO2016058454 A1 WO 2016058454A1
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WIPO (PCT)
Prior art keywords
passage
gland
ring
sleeve
seal
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Application number
PCT/CN2015/088226
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English (en)
French (fr)
Inventor
邢宇
邢天宜
Original Assignee
邢宇
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Filing date
Publication date
Application filed by 邢宇 filed Critical 邢宇
Priority to US15/519,282 priority Critical patent/US10247200B2/en
Publication of WO2016058454A1 publication Critical patent/WO2016058454A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • F04D29/128—Shaft sealings using sealing-rings especially adapted for liquid pumps with special means for adducting cooling or sealing fluid

Definitions

  • the invention relates to a cantilever centrifugal pump.
  • it relates to a coolant or a heating liquid circulation system of a cantilever centrifugal pump.
  • the cooling passages are cooling passages respectively formed on the sealing gland 5 on one side of the cantilever centrifugal pump, that is, the sealing gland 5 which can only cool or heat the liquid on the side of the cantilever centrifugal pump 5
  • the inside is circulated, and the pump shaft 7 that needs to be cooled or heated cannot be cooled or heated.
  • a low-temperature circulating fluid such as water, oil, steam or nitrogen
  • a low-temperature circulating fluid such as water, oil, steam or nitrogen
  • the fluid flows from the stationary high-temperature components and then flows out, and the heat of the pump body is taken away.
  • the fluid flowing out becomes a high-temperature fluid, and then flows through a cooler located outside the pump body, and the fluid passes through. After the cooler cools down, it becomes a cryogenic fluid, and then the fluid is reintroduced into the stationary components, and thus circulated to control the temperature of the pump body. This method is called cooling.
  • the above cooler can be changed to a heater. Heating in this way is referred to as heating.
  • Cooling or heating only on the surface of the rotating parts of the high temperature centrifugal pump for example: shaft or bushing
  • the cooling fluid only contacts the partial surface of the rotating part of the centrifugal pump. In other words, the axial length of the fluid contacting the rotating part is short, so the flow area of the cooling liquid is small.
  • the portion of the rotating component that is cooled or heated by the fluid is not at the core where the rotating component is most in need of cooling or heating.
  • the cooling fluid is not in direct contact with the pump shaft.
  • the stationary components are in contact with the atmosphere, so their temperature does not represent the temperature at the core of the device. Therefore, if you control their temperature well, you can't say that the problem is solved.
  • the rotating parts of the high-temperature centrifugal pump are the parts that need to be cooled most. If it is always in a high temperature state, it will bring many disadvantages. Do not do too much analysis here.
  • the rotating parts of the high-temperature centrifugal pump are also the parts that need to be heated most. If it is not fully heated, the consequences are also very serious, especially when the high-temperature centrifugal pump is started, and it is not done here. Too much analysis.
  • the technical problem to be solved by the present invention is to provide a coolant or a heating liquid circulation system of a cantilever centrifugal pump capable of directly cooling or heating a portion which is most in need of cooling or heating.
  • a coolant or heating liquid circulation system of a cantilever centrifugal pump comprising a pump shaft having one end connected to the impeller, and a sleeve sleeved around the outer circumference of the pump shaft, starting from the impeller side
  • the left sealing gland and the right sealing gland which are sleeved on the outer circumference of the sleeve are sequentially engaged along the axial direction of the sleeve, and the left sealing gland and the right sealing gland are respectively formed with the sleeve a space between the left sealing gland and the sleeve, and a medium end sealing ring fixedly connected to the sleeve and a medium end sealing fixedly connected to the left sealing gland a ring, a portion of the space between the right sealing gland and the sleeve that is away from the left sealing gland is provided with an atmospheric end sealing ring fixedly connected with the bushing and the right sealing gland a fixedly connected atmospheric end seal static ring,
  • the heat exchange liquid circulation passage includes a first passage formed in the right sealing gland and the outer port is connected to the liquid discharge end or the liquid inlet end of the heat exchanger through an external pipe, by the right a second passage formed between the sealing gland and the sleeve and located at a side of the throttle ring adjacent to a side of the left sealing gland, a third passage formed on the sleeve, formed on the pump a fourth passage between the outer peripheral surface of the shaft and the inner peripheral surface of the sleeve is integrally formed between the sleeve and the throttle ring of the right seal gland and the seal ring of the atmospheric end, and the side of the static seal ring away from the atmosphere end a fifth passage in the space, a sixth passage formed by a space formed between the atmospheric end seal moving ring and the right seal gland and provided with an atmospheric end effect ring, formed on the right seal gland And the outer port is connected to the seventh passage of the heat outlet end or the liquid inlet end of the heat exchanger through an external pipeline.
  • the fourth passage formed between the outer circumferential surface of the pump shaft and the inner circumferential surface of the sleeve is a passage formed by a plurality of sealing strips disposed between the outer circumferential surface of the pump shaft and the inner circumferential surface of the sleeve.
  • the plurality of sealing strips are respectively embedded in the outer circumference of the pump shaft In-plane.
  • the heat exchange liquid circulation passage includes a first passage formed in the right sealing gland and the outer port is connected to the liquid discharge end or the liquid inlet end of the heat exchanger through an external pipe, by the right a second passage formed between the sealing gland and the sleeve and located at a side of the throttle ring adjacent to a side of the left sealing gland, a third passage formed on the sleeve, formed on the pump An eighth passage inside the shaft, forming a ninth passage between the pump shaft and the sleeve, integrally formed on the sleeve and the throttle ring of the right seal gland and the atmospheric end sealing the moving ring, away from the atmospheric end a fifth passage in a space between one side of the seal static ring, a sixth passage formed by a space formed between the atmospheric end seal moving ring and the right seal gland and provided with an atmospheric end effect ring, formed in The right sealing gland and the outer port are connected to the seventh passage of the heat outlet end or the liquid inlet end of the heat exchanger through an external pipeline.
  • the eighth passage formed inside the pump shaft is a first radial passage formed by one end communicating with the third passage and radially along the pump shaft, and one end and the other end of the first radial passage An axial passage communicating with the axial direction of the pump shaft, and a second radial passage having one end communicating with the other end of the axial passage and radially formed along the pump shaft, the second radial passage The other end is in communication with the ninth channel.
  • the utility model comprises a pump shaft with one end connected to the impeller, and a sleeve sleeved around the outer circumference of the pump shaft, and the left sealing gland and the right sealing pressure sleeved on the outer circumference of the sleeve are sequentially connected from the impeller side in the axial direction of the sleeve.
  • a cover is formed between the left sealing gland and the right sealing gland and the sleeve, and a space is formed between the left sealing gland and the sleeve.
  • a sleeve end fixedly connected media end sealing ring and a medium end sealing static ring fixedly connected to the left sealing gland wherein the space between the right sealing gland and the sleeve is away from the left sealing gland a portion of the space is provided with an atmospheric end seal moving ring fixedly connected to the sleeve and an atmospheric end seal static ring fixedly connected to the right seal gland, wherein the right seal gland and the sleeve a portion of the space between the adjacent left sealing gland is provided with a throttle sealing ring fixedly connected to the sleeve and a throttle sealing ring fixedly connected to the right sealing gland, the section a flow sealing static ring is in contact with the throttle sealing ring
  • a space between the right sealing gland and the sleeve, the sleeve and the pump shaft is formed with a heat exchanger connected to the outside through an external pipeline and enables the heat exchange liquid to be in the cantilever centrifugal pump. While the rotating member rotates synchronously, the heat exchange liquid
  • the heat exchange liquid circulation passage includes a first passage formed in the right sealing gland and the outer port is connected to the liquid discharge end or the liquid inlet end of the heat exchanger through an external pipe.
  • the second passage formed between the right sealing gland and the throttle sealing ring is integrally formed in a space between the side of the throttle sealing ring away from the side of the throttle sealing ring and the left sealing gland and a third passage in the sleeve, forming a fourth passage between the outer peripheral surface of the pump shaft and the inner circumferential surface of the sleeve, and a throttling seal static ring integrally formed in the sleeve and by the right seal gland a fifth passage in a space between the side of the atmospheric end seal moving ring and the side of the static seal ring away from the atmosphere end, formed by the atmosphere end seal moving ring and the right seal gland and provided with an atmospheric end effect ring
  • a sixth passage formed by the space is formed on the right sealing gland and the outer port is connected to the seventh passage of the heat exchanger liquid outlet end
  • the fourth passage formed between the outer circumferential surface of the pump shaft and the inner circumferential surface of the sleeve is a passage formed by a plurality of sealing strips disposed between the outer circumferential surface of the pump shaft and the inner circumferential surface of the sleeve.
  • the plurality of sealing strips are respectively embedded on an outer circumferential surface of the pump shaft.
  • the heat exchange liquid circulation passage includes a plurality of communicating channels in sequence: formed on the right sealing gland and the outer port is open a first passage connecting the liquid discharge end or the liquid inlet end of the heat exchanger through an external pipe, and a second passage formed between the right seal gland and the throttle seal moving ring is integrally formed in the throttle seal
  • the movable ring is away from the space between the side of the throttle seal static ring and the left seal gland and the third passage in the sleeve, forming an eighth passage inside the pump shaft, formed on the pump shaft and a ninth passage between the sleeves, integrally formed in the sleeve and in the space between the throttle static ring on the right seal gland and the side of the atmospheric end seal moving ring away from the atmosphere seal static ring a passage, a sixth passage formed by a space formed between the atmospheric end seal moving ring and the right seal gland and provided with an atmospheric end effect ring, formed on the right seal gland and the outer port passing through the outer tube
  • the road connects the seventh passage of the heat inlet
  • the eighth passage formed inside the pump shaft is a first radial passage formed by one end communicating with the third passage and radially along the pump shaft, and one end and the other end of the first radial passage An axial passage communicating with the axial direction of the pump shaft, and a second radial passage having one end communicating with the other end of the axial passage and radially formed along the pump shaft, the second radial passage The other end is in communication with the ninth channel.
  • the coolant or heating liquid circulation system of a cantilever centrifugal pump of the present invention directly supplies cooling or heating to all rotating parts of the high temperature centrifugal pump to the portion that is most in need of cooling or heating, so that the temperature of the rotating part is always Can be controlled within the set range.
  • the invention has the following advantages:
  • b can actively increase or decrease the flow of cooling or heating fluid.
  • c can actively accelerate or slow down the flow rate of the cooling or heating fluid.
  • FIG. 1 is a schematic view showing the external structure of a prior art cantilever centrifugal pump
  • FIG. 2 is a schematic view showing the internal structure of a prior art cantilever centrifugal pump
  • Figure 3 is a schematic view showing the external structure of the cantilever centrifugal pump of the present invention.
  • Figure 4 is a schematic view showing the internal structure of the first embodiment of the cantilever centrifugal pump of the present invention.
  • Figure 5 is a schematic view showing the internal structure of a second embodiment of the cantilever centrifugal pump of the present invention.
  • Figure 6 is a schematic view showing the structure of a heat exchange liquid circulation passage on the outer circumference of the pump shaft in the first embodiment and the second embodiment;
  • Figure 7 is a schematic view showing the internal structure of a third embodiment of the cantilever centrifugal pump of the present invention.
  • Figure 8 is a schematic view showing the internal structure of a fourth embodiment of the cantilever centrifugal pump of the present invention.
  • Figure 9 is a schematic view showing the structure of a heat exchange liquid circulation passage inside the pump shaft in the first embodiment and the second embodiment.
  • bracket 2 pump casing
  • Atmospheric end seal moving ring 18 Atmospheric end seal static ring
  • first channel 202 second channel
  • the coolant or heated liquid circulation system of a cantilever centrifugal pump of the present invention is a system for directly supplying cooling or heating liquid to all rotating components in a high temperature centrifugal pump which is most in need of cooling or heating.
  • Circulating fluid having an initial temperature is directly flowed into the rotating component body through the stationary component of the pump body by means of a mechanical seal or a throttle mechanism, and the circulating fluid not only rotates synchronously with the rotating component, but also flows axially along the rotating component to reach the most The core position that needs to be cooled or heated, after sufficient heat exchange, the heat is carried away while the fluid continuously flows out of the rotating part, and the liquid flowing from the inside of the centrifugal pump to the external line of the centrifugal pump is heat-exchanged outside the centrifugal pump.
  • the temperature returns to the initial temperature.
  • the fluid flows into the rotating part of the centrifugal pump, and the above process is repeated in sequence, and the heat exchange is continued to achieve the temperature control of the rot
  • the coolant or heating liquid circulation system of a cantilever centrifugal pump of the present invention comprises a pump shaft 7 having one end connected to the impeller 10, and is sleeved around the outer circumference of the pump shaft 7.
  • the medium end seal static ring 13 is fixedly connected to the gland 51, and a space away from the left seal gland 51 in the space between the right seal gland 52 and the sleeve 11 is disposed to be fixed to the sleeve 11
  • the connected atmospheric end sealing ring 17 and the atmospheric end sealing static ring 18 fixedly connected to the right sealing gland 52 are disposed between the inner circumferential surface of the right sealing gland 52 and the sleeve 11
  • the throttle ring 16 is formed between the space between the right sealing gland 52 and the sleeve 11 and between the sleeve 11 and the pump shaft 7 with a heat exchanger 8 connected to the outside through an external line 9 and capable of
  • the heat exchange liquid is rotated synchronously with the rotating part of the cantilever centrifugal pump, and along the rotating part of the cantilever centrifugal pump An axially flowing heat exchange liquid circulation passage.
  • the heat exchange liquid circulation passages are connected in sequence: formed on the right sealing gland 52 and the outer port is connected to the liquid outlet end of the heat exchanger 8 through an external line 9 or a first passage 201 at the liquid inlet end, a second passage 202 formed by a space formed between the right seal gland 52 and the sleeve 11 and located on a side of the throttle ring 16 adjacent to the left seal gland 51, is formed at a third passage 203 on the sleeve 11 is formed in a fourth passage 204 between the outer circumferential surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11, integrally formed on the sleeve 11 and the right sealing gland
  • a fifth passage 205 in the space between the throttle ring 16 of the 52 and the atmospheric end seal ring 17 and away from the atmospheric end seal static ring 18 is between the atmospheric end seal moving ring 17 and the right seal gland 52.
  • a sixth passage 206 formed and provided with a space of the atmospheric end effecting ring 19 is formed on the right sealing gland 52 and the outer port is connected to the liquid outlet end of the heat exchanger 8 through an external line 9 or into the liquid The seventh channel 207 of the end.
  • the fourth passage 204 formed between the outer circumferential surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11 is disposed between the outer circumferential surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11.
  • the plurality of weather strips 20 are formed in the outer peripheral surface of the pump shaft 7, respectively.
  • the heat exchange liquid circulation passage may further include: sequentially connected to each other: formed on the right sealing gland 52 and the outer port is connected to the heat exchanger 8 through an external pipe 9.
  • a first passage 201 at the liquid end or the liquid inlet end a second passage 202 formed by a space formed between the right seal gland 52 and the sleeve 11 and located on the side of the throttle ring 16 adjacent to the left seal gland 51 a third passage 203 formed on the boss 11 and an eighth passage 208 formed inside the pump shaft 7 formed in the ninth between the outer peripheral surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11
  • the passage 209 is integrally formed on the sleeve 11 and the fifth passage 205 in the space between the throttle ring 16 of the right seal gland 52 and the atmospheric end seal moving ring 17 and the side closer to the atmospheric end seal static ring 18 a sixth passage 206 formed by a space formed between the atmospheric end seal moving ring 17 and the right seal gland 52 and provided with the atmospheric end effect ring
  • the eighth passage 208 formed inside the pump shaft 7 is a first radial passage 2081 which is connected to the third passage 203 at one end and is formed radially along the pump shaft 7, one end.
  • a second radial passage 2083 is formed, and the other end of the second radial passage 2083 is in communication with the ninth passage 209.
  • the coolant or heating liquid circulation system of the cantilever centrifugal pump of the present invention is further It may be a pump shaft 7 including one end connected to the impeller 10, and a sleeve 11 sleeved on the outer circumference of the pump shaft 7, and sequentially engaging the outer circumference of the sleeve 11 from the axial direction of the sleeve 11 from the side of the impeller 10
  • the left sealing gland 51 and the right sealing gland 52 are formed with a certain space between the left sealing gland 51 and the right sealing gland 52 and the sleeve 11, and the left sealing gland 51 is respectively formed.
  • a space end sealing ring 12 fixedly connected to the sleeve 11 and a medium end sealing ring 13 fixedly connected to the left sealing gland 51 are disposed in a space between the sleeve 11 and the sleeve 11
  • a portion of the space between the right sealing gland 52 and the sleeve 11 away from the left sealing gland 51 is provided with an atmospheric end sealing ring 17 fixedly coupled to the sleeve 11 and the right sealing pressure
  • the cover 52 is fixedly connected to the atmospheric end seal static ring 18, and a space between the right seal gland 52 and the sleeve 11 adjacent to the left seal gland 51 is fixedly connected to the sleeve 11 a throttle sealing ring 14 and a throttling sealing static ring 15 fixedly connected to the right sealing gland 52, the throttling
  • the sealing ring 15 is in contact with the throttle sealing ring 14, and a space is formed between the right sealing gland 52 and the sleeve 11, between the sleeve 11 and the pump shaft 7, and
  • the heat exchange liquid circulation passages are connected in sequence: formed on the right sealing gland 52 and the outer port is connected to the liquid outlet end of the heat exchanger 8 through an external line 9 or
  • a sixth passage 206 formed by a space formed between the atmospheric end seal moving ring 17 and the right seal gland 52 and provided with the atmospheric end effect ring 19 is
  • the fourth passage 204 formed between the outer circumferential surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11 is disposed between the outer circumferential surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11.
  • a plurality of sealing strips 20 are formed in the passage, and the plurality of sealing strips 20 are respectively embedded on the outer peripheral surface of the pump shaft 7.
  • the heat exchange liquid circulation passage may further include: sequentially connected to each other: formed on the right sealing gland 52 and the outer port is connected to the heat exchanger 8 through an external pipe 9.
  • the first passage 201 of the liquid end or the liquid inlet end, the second passage 202 formed between the right sealing gland 52 and the throttle sealing ring 14 is integrally formed on the throttle sealing ring 14 away from the throttling seal
  • a space between the static ring 15 side and the left sealing gland 51 and a third passage 203 in the sleeve 11 form an eighth passage 208 inside the pump shaft 7 formed on the pump shaft 7
  • the ninth passage 209 between the outer peripheral surface and the inner circumferential surface of the sleeve 11 is integrally formed in the sleeve 11 and the throttle static ring 15 and the atmospheric end seal moving ring 17 on the right seal gland 52 are away from the atmospheric end.
  • a fifth passage 205 in the space between the sides of the seal static ring a sixth space formed by the space between the atmosphere end seal moving ring 17 and the right seal gland 52 and provided with the atmospheric end effect ring 19 a passage 206 formed on the right sealing gland 52 and the outer port connected to the heat exchanger 8 through an external line 9 Or the end of the seventh fluid passage 207 side.
  • the eighth passage 208 formed inside the pump shaft 7 is a first radial passage 2081 which is connected to the third passage 203 at one end and is formed radially along the pump shaft 7, one end.
  • the other end of the first radial passage 2081 An axial passage 2082 communicating in the axial direction of the pump shaft 7 and a second radial passage 2083 communicating with the other end of the axial passage 2082 and radially along the pump shaft 7
  • the other end of the two radial passages 2083 is in communication with the ninth passage 209.
  • the working process of the first embodiment (shown in FIG. 4) of the coolant or heating liquid circulation system of a cantilever centrifugal pump of the present invention is: a liquid for heat exchange inside the cantilever centrifugal pump from the heat exchanger 8
  • the first passage 201 formed on the right sealing gland 52 and the outer port connected to the liquid outlet end or the liquid inlet end of the heat exchanger 8 through the external line 9 is sequentially entered through the external line 9 and sealed by the right side.
  • a second passage 202 formed between the gland 52 and the sleeve 11 and located in a space of the throttle ring 16 adjacent to the side of the left sealing gland 51, and a third passage 203 formed on the sleeve 11 a fourth passage 204 formed between the outer circumferential surface of the pump shaft 7 and the inner circumferential surface of the sleeve 11, and the throttle ring 16 integrally formed on the sleeve 11 and the right sealing gland 52 is sealed to the atmospheric end.
  • the ring 17 is away from the fifth passage 205 in the space between the sides of the atmospheric end seal static ring 18, and is formed between the atmospheric end seal moving ring 17 and the right seal gland 52 and is provided with an atmospheric end effect ring 19
  • the sixth passage 206 formed by the space is formed on the right sealing gland 52 and the outer port passes through the external pipe 9 is connected to the seventh passage 207 of the liquid inlet end or the liquid inlet end of the heat exchanger 8 to exchange heat with the rotating component inside the cantilever centrifugal pump, in particular the pump shaft 7, and the liquid after heat exchange is located at the right sealing gland
  • the seventh passage 207 in 52 flows out through the external line 9 into the heat exchanger 8 for heat exchange, and then enters the first passage 201 in the right seal gland 52 through the external line 9 to continue the rotation with the inside of the cantilever centrifugal pump.
  • the parts are heat exchanged. In this cycle, heat exchange to the rotating components in the cantilever centrifugal pump is achieved.
  • the arrangement of the throttle ring 16 between the two inlets and the outlet port of the right sealing gland 52 allows the fluid entering the cantilever centrifugal pump from the inlet of the heat exchange liquid circulation passage to be largely designed.
  • the heat exchange liquid circulation channel flows in the cantilever centrifugal pump body, and then flows out from the liquid outlet of the heat exchange liquid circulation passage after walking completely, substantially avoiding the fluid just coming out from the liquid inlet and immediately discharging from the liquid inlet.
  • the mouth flowed because there was no heat exchange in the process.
  • Replacing the mechanical seal with a throttle ring saves axial space, is simple in structure, low in cost, and short in cycle time.
  • FIG. 5 The working process of the second embodiment of the coolant or heating liquid circulation system of a cantilever centrifugal pump of the present invention shown in FIG. 5 is the same as that of the first embodiment described above with reference to FIG. 4, except for the second embodiment.
  • a throttle seal ring 14 and a throttle seal ring 15 are disposed in the space between the right seal gland 52 and the sleeve 11.
  • a throttle mechanical seal is arranged between the two inlets and the outlet port of the right sealing gland 52, that is, the throttling sealing ring 14 and the throttling sealing ring 15 are such that the heat exchange liquid circulation channel is
  • the fluid entering the cantilever centrifugal pump flows reliably in the cantilever centrifugal pump according to the designed heat exchange liquid circulation passage, and then flows out from the outlet of the heat exchange liquid circulation passage after the entire passage, and the flow is eliminated.
  • the fluid just flows out of the inlet and immediately flows away from the outlet because there is no heat exchange in the process.
  • FIG. 7 and FIG. 8 The working process of the third embodiment and the fourth embodiment of the coolant or heating liquid circulation system of a cantilever centrifugal pump of the present invention shown in FIG. 7 and FIG. 8 is the same as that of the first embodiment and the second embodiment. Only the liquid for heat exchange in the third embodiment and the fourth is moved inside the pump shaft 7, and exchanges heat with the pump shaft 7. While the liquid for heat exchange in the first embodiment and the second embodiment is moved on the surface of the pump shaft 1, heat exchange with the pump shaft 1 is performed.
  • the fluid material delivered by the cantilever centrifugal pump is limited by the refining or chemical process and the temperature is constant, that is, the material transfers heat to the rotating component, but the heat transfer takes time, using the cantilever of the present invention.
  • the coolant or heated liquid circulation system of the centrifugal pump, the rotating parts of the centrifugal pump undergo a new heat exchange with the coolant circulation system flowing through the present invention when the temperature has not changed. Therefore, the temperature of the rotating member can always be controlled within a desired range.

Abstract

一种悬臂式离心泵的冷却液或加热液循环系统，有套在泵轴（7）外周的轴套（11），从叶轮（10）一侧开始沿轴套的轴向依次衔接套在轴套外周的左密封压盖（51）和右密封压盖（52），左密封压盖与轴套之间的空间内设置有与轴套固定连接的介质端密封动环（12）和与左密封压盖固定连接的介质端密封静环（13），右密封压盖与轴套之间的空间内在远离左密封压盖的部分空间设置有与轴套固定连接的大气端密封动环（17）和与右密封压盖固定连接的大气端密封静环（18），右密封压盖的内周面与轴套之间设置有节流环（16），在右密封压盖与轴套之间的空间、轴套、泵轴之间形成有一条连接热交换器（8）的轴向流动的热交换液体循环通道。本循环系统是直接向最需要冷却或者加热的部位提供冷却或加热，使旋转部件的温度总是能够控制在设定的范围之内。

Description

一种悬臂式离心泵的冷却液或加热液循环系统 技术领域
本发明涉及一种悬臂式离心泵。特别是涉及一种悬臂式离心泵的冷却液或加热液循环系统。
背景技术
在炼油、化工产业里，高温离心泵在转动机械设备中扮演着重要角色，它的冷却或加热始终是一个重要的课题。
到目前为止所有方法大多都是针对离心泵静止部件进行冷却，例如：轴承箱外壳、机械密封压盖等，这一点从“API610附录B(标准性)冷却水和润滑系统示意图”和“API682附录D(标准性附录)标准冲洗方案和辅助金属构件中标准密封冲洗方案02”就可以看出；对旋转部件的冷却也仅仅限于局部的表面，这一点从“API682附录D(标准性附录)标准冲洗方案和辅助金属构件中标准密封冲洗方案51、61、65A、65B、66A、66B和52、53A、53B、53C、54、55”就可以看出；冷却液接触到该部分旋转部件以后既不能完全与其同步旋转，又不能沿着其轴向流动，并且过流面积小。如图1、图2所示，冷却通道是分别形成在悬臂式离心泵一侧的密封压盖5上的冷却通道，即冷却或加热液体只能在悬臂式离心泵一侧的密封压盖5内进行循环，而不能对需要进行冷却或加热的泵轴7进行冷却或加热。
除此之外，对于冷却泵体的静止部件：往泵壳，轴承箱和机械密封压盖的空心腔体内引入低温循环流体，例如：水、油、蒸汽或氮气等。该流体从这些静止的高温部件体内转一圈再流出去，把泵体的热量带走，流出以后的流体就变成了高温流体，然后流经位于泵体外部静止的冷却器，该流体经过冷却器冷却降温以后又变成低温流体，然后再把该流体重新引入到这些静止的部件体内，如此循环起来达到控制泵体温度的目的。这种方法被称做冷却。
同理，当泵需要加热的时候，把上述的冷却器改成加热器即可。用这种方法进行加热被称做加热。
目前还没有把这种流体直接引入到高温离心泵连续旋转运动的空心旋转零部件腔体内实现对其进行冷却或者加热的技术。
因此，目前在现有技术中对高温离心泵冷却或加热所存在的不足有：
(一)仅在高温离心泵旋转部件(例如：轴或轴套)表面进行冷却或加热：
1、冷却流体只接触离心泵旋转部件的局部表面，换句话说流体接触旋转部件的轴向长度很短，所以，冷却液体过流面积小。
2、流体所冷却或者加热的旋转部件的部位并不是位于旋转部件最需要冷却或者加热的核心部位。
3、流体在接触离心泵的旋转部件表面时无法进行轴向位移，所以，对流的效果差。
4、在整个旋转部件上无法做到想冷却哪就能冷却到哪。
5、冷却流体没有与泵轴直接接触。
(二)只能对泵壳、轴承箱和机械密封压盖这些泵体上的静止部件进行冷却或加热：
1、所述静止部件都与大气接触，所以，它们的温度不能代表设备核心部位的温度。因此，把它们的温度控制得再好也不能说问题就解决了。
2、无法准确测量与监督设备核心部位的精确温度与瞬时温度变化。
3、现有技术所冷却或加热的部位与设备真正需要冷却或加热的核心部位之间总是隔着新鲜的被输送的流体物料，换句话说就是物料会把热量传给转子，而热量传递又需要时间，高温离心泵核心部位的旋转部件所接触的物质绝大部分是新鲜的被输送的流体物料。这些流体物料根本来不及得到冷却或加热就流走了，换成了新的物料，这些新鲜流体物料受到炼油或化工工艺的限制而温度恒定。也就是说旋转部件的核心部位总是得不到来自现有冷却或加热的关照，如同隔靴搔痒。
4、高温离心泵的旋转部件是最需要得到冷却的部件，如果它总是处在高温状态会带来很多不利因素，在这里不做过多分析。
5、同理，高温离心泵的旋转部件也是最需要加热的部件，它要是得不到充分的加热同样后果也很严重，尤其是在高温离心泵启动的时刻更是如此，在这里也不做过多分析。
发明内容
本发明所要解决的技术问题是，提供一种能够直接对最需要冷却或者加热的部位进行冷却或加热的悬臂式离心泵的冷却液或加热液循环系统。
本发明所采用的技术方案是：一种悬臂式离心泵的冷却液或加热液循环系统，包括有一端与叶轮相连的泵轴，套在所述泵轴外周的轴套，从叶轮一侧开始沿轴套的轴向依次衔接套在所述轴套外周的左密封压盖和右密封压盖，所述的左密封压盖和右密封压盖与所述的轴套之间分别形成有一定的空间，所述左密封压盖与所述轴套之间的空间内设置有与所述的轴套固定连接的介质端密封动环和与所述左密封压盖固定连接的介质端密封静环，所述右密封压盖与所述轴套之间的空间内在远离左密封压盖的部分空间设置有与所述的轴套固定连接的大气端密封动环和与所述右密封压盖固定连接的大气端密封静环，所述的右密封压盖的内周面与所述的轴套之间设置有节流环，在所述的右密封压盖与轴套之间的空间、轴套、泵轴之间形成有一条通过外部管路连接位于外部的热交换器且能够使热交换液体在随悬臂式离心泵的旋转部件同步旋转的同时，又沿悬臂式离心泵的旋转部件的轴向流动的热交换液体循环通道。
所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器出液端或进液端的第一通道，由右密封压盖与轴套之间所形成的且位于所述节流环临近左密封压盖一侧的空间构成的第二通道，形成在所述轴套上的第三通道，形成在所述泵轴外周面与轴套内周面之间的第四通道，一体形成在所述轴套上和右密封压盖的节流环与大气端密封动环、远离大气端密封静环一侧之间的空间内的第五通道，由所述大气端密封动环与右密封压盖之间所形成的并设置有大气端泵效环的空间构成的第六通道，形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器出液端或进液端的第七通道。
所述的形成在泵轴外周面与轴套内周面之间的第四通道是由设置于所述泵轴外周面与轴套内周面之间的多条密封条所搭成的通道，所述的多条密封条分别嵌入在所述泵轴的外周 面内。
所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器出液端或进液端的第一通道，由右密封压盖与轴套之间所形成的且位于所述节流环临近左密封压盖一侧的空间构成的第二通道，形成在所述轴套上的第三通道，形成在所述泵轴内部的第八通道，形成在所述泵轴和轴套之间的第九通道，一体形成在所述轴套上和右密封压盖的节流环与大气端密封动环、远离大气端密封静环一侧之间的空间内的第五通道，由所述大气端密封动环与右密封压盖之间所形成的并设置有大气端泵效环的空间构成的第六通道，形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器出液端或进液端的第七通道。
所述的形成在泵轴内部的第八通道是由一端与所述的第三通道相连通且沿泵轴径向形成的第一径向通道，一端与所述第一径向通道的另一端相连通且沿泵轴轴向形成的轴向通道，以及一端与所述的轴向通道的另一端相连通且沿泵轴径向形成的第二径向通道，所述第二径向通道的另一端与所述的第九通道相连通。
包括有一端与叶轮相连的泵轴，套在所述泵轴外周的轴套，从叶轮一侧开始沿轴套的轴向依次衔接套在所述轴套外周的左密封压盖和右密封压盖，所述的左密封压盖和右密封压盖与所述的轴套之间分别形成有一定的空间，所述左密封压盖与所述轴套之间的空间内设置有与所述的轴套固定连接的介质端密封动环和与所述左密封压盖固定连接的介质端密封静环，所述右密封压盖与所述轴套之间的空间内在远离左密封压盖的部分空间设置有与所述的轴套固定连接的大气端密封动环和与所述右密封压盖固定连接的大气端密封静环，其特征在于，所述右密封压盖与所述轴套之间的空间内在临近左密封压盖的部分空间设置有与所述的轴套固定连接的节流密封动环和与所述右密封压盖固定连接的节流密封静环，所述的节流密封静环与所述的节流密封动环接触连接，在所述的右密封压盖与轴套之间的空间、轴套、泵轴之间形成有一条通过外部管路连接位于外部的热交换器且能够使热交换液体在随悬臂式离心泵的旋转部件同步旋转的同时，又沿悬臂式离心泵的旋转部件的轴向流动的热交换液体循环通道。
所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器出液端或进液端的第一通道，由所述的右密封压盖与节流密封动环之间所形成的第二通道，一体形成在节流密封动环远离节流密封静环一侧与左密封压盖之间的空间内以及所述轴套内的第三通道，形成在所述泵轴外周面与轴套内周面之间的第四通道，一体形成在所述轴套内以及由右密封压盖上的节流密封静环与大气端密封动环远离大气端密封静环一侧之间的空间内的第五通道，由所述大气端密封动环与右密封压盖之间所形成的并设置有大气端泵效环的空间构成的第六通道，形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器出液端或进液端的第七通道。
所述的形成在泵轴外周面与轴套内周面之间的第四通道是由设置于所述泵轴外周面与轴套内周面之间的多条密封条所搭成的通道，所述的多条密封条分别嵌在所述泵轴的外周面上。
所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖上且外端口通 过外部管路连接所述热交换器出液端或进液端的第一通道，由所述的右密封压盖与节流密封动环之间所形成的第二通道，一体形成在节流密封动环远离节流密封静环一侧和左密封压盖之间的空间内以及所述轴套内的第三通道，形成在所述泵轴内部的第八通道，形成在所述泵轴和轴套之间的第九通道，一体形成在所述轴套内以及由右密封压盖上的节流静环与大气端密封动环远离大气密封静环一侧之间的空间内的第五通道，由所述大气端密封动环与右密封压盖之间所形成的并设置有大气端泵效环的空间构成的第六通道，形成在所述右密封压盖上且外端口通过外部管路连接所述热交换器进液端或出液端的第七通道。
所述的形成在泵轴内部的第八通道是由一端与所述的第三通道相连通且沿泵轴径向形成的第一径向通道，一端与所述第一径向通道的另一端相连通且沿泵轴轴向形成的轴向通道，以及一端与所述的轴向通道的另一端相连通且沿泵轴径向形成的第二径向通道，所述第二径向通道的另一端与所述的第九通道相连通。
本发明的一种悬臂式离心泵的冷却液或加热液循环系统，是直接向最需要冷却或者加热的部位，即高温离心泵所有旋转着的部件提供冷却或加热，使旋转部件的温度总是能够控制在设定的范围之内。本发明具有如下优点：
1、克服了现有技术的不足。
2、在控制离心泵旋转部件的温度方面真正做到变被动为主动：
a，在离心泵旋转部件的整个轴向长度上需要冷却或加热到哪里，就可以通过设计把流道开到哪里，冷却或加热流体就流到哪里。
b，可以主动地加大或减少冷却或加热流体的流量。
c，可以主动地加快或减慢冷却或加热流体的流速。
3、通过测量刚从离心泵旋转部件的旋转腔体流出来的流体温度，就可以监督设备核心部位的精确温度与瞬时温度。这样能够及时和准确地发现问题，更早采取措施，确保设备安全运行。
4、不用加大太多的物质投入，与API610和API682标准不冲突也不排斥，利用方案52，方案53a、方案53b、方案53c、方案54以及所有具有双端面机械密封或两组节流机构的现有设备与方案中，都能够跟本发明并联以后同时使用。
5、使真正需要控制温度的旋转部件实现了温度的有效控制。
6、给生产制造高温离心泵行业，甚至炼油和化工行业提供了发展空间。因为炼油和化工行业必然逐步向更深加工的方向发展，化工残留物越来越少，工况温度越来越高，如果我们没有手段和技术来控制离心泵的温度，发展就会放慢。
7、也同样适应化工反应釜的搅拌转子和其它带有定子和转子的机械设备，例如：透平机、压缩机、风机、电动机、发电机、发动机、内燃机、涡轮机、螺杆泵、齿轮泵等等。
附图说明
图1是现有技术的悬臂式离心泵的外部结构示意图；
图2是现有技术的悬臂式离心泵的内部结构示意图；
图3是本发明的悬臂式离心泵的外部结构示意图；
图4是本发明的悬臂式离心泵第一实施例的内部结构示意图；
图5是本发明的悬臂式离心泵第二实施例的内部结构示意图；
图6是第一实施例和第二实施例中泵轴外周的热交换液体循环通道的结构示意图；
图7是本发明的悬臂式离心泵第三实施例的内部结构示意图；
图8是本发明的悬臂式离心泵第四实施例的内部结构示意图；
图9是第一实施例和第二实施例中泵轴内部的热交换液体循环通道的结构示意图。
图中
1：支架                            2：泵壳
3：介质入口                        4：介质出口
5：密封压盖                        6：轴承座
7：泵轴                            8：热交换器
9：外部管路                        10：叶轮
11：轴套                           12：介质端密封动环
13：介质端密封静环                 14：节流密封动环
15：节流密封静环                   16：节流环
17：大气端密封动环                 18：大气端密封静环
19：大气端泵效环                   20：密封条
51：左密封压盖                     52：右密封压盖
201：第一通道                      202：第二通道
203：第三通道                      204：第四通道
205：第五通道                      206：第六通道
207：第七通道                      208：第八通道
209：第九通道                      2081：第一径向通道
2082：轴向通道                     2083：第二径向通道
具体实施方式
下面结合实施例和附图对本发明的一种悬臂式离心泵的冷却液或加热液循环系统做出详细说明。
本发明的一种悬臂式离心泵的冷却液或加热液循环系统，是一种直接向最需要冷却或者加热的高温离心泵中所有旋转部件提供冷却或加热液体的系统。使一具有初始温度的循环流体依靠机械密封或节流机构由外部经泵体的静止部件直接流进旋转部件体内，循环流体不但跟着旋转部件同步旋转，而且还沿着旋转部件轴向流动达到最需要冷却或加热的核心位置，充足地进行热交换以后，在流体不断地流出旋转部件的同时带走热量，从离心泵内部流到离心泵外部管路中的液体在离心泵外部进行热交换后，温度又回到了初始温度，在循环过程中该流体又流进了离心泵旋转部件的体内，依次循环重复上述过程，周而复始，持续进行热交换，从而达到了控制离心泵转子的温度。
如图3、图4、图7所示，本发明的一种悬臂式离心泵的冷却液或加热液循环系统，包括有一端与叶轮10相连的泵轴7，套在所述泵轴7外周的轴套11，从叶轮10一侧开始沿轴 套11的轴向依次衔接套在所述轴套11外周的左密封压盖51和右密封压盖52，所述的左密封压盖51和右密封压盖52与所述的轴套11之间分别形成有一定的空间，所述左密封压盖51与所述轴套11之间的空间内设置有与所述的轴套11固定连接的介质端密封动环12和与所述左密封压盖51固定连接的介质端密封静环13，所述右密封压盖52与所述轴套11之间的空间内在远离左密封压盖51的部分空间设置有与所述的轴套11固定连接的大气端密封动环17和与所述右密封压盖52固定连接的大气端密封静环18，所述的右密封压盖52的内周面与所述的轴套11之间设置有节流环16，在所述的右密封压盖52与轴套11之间的空间、轴套11、泵轴7之间形成有一条通过外部管路9连接位于外部的热交换器8且能够使热交换液体在随悬臂式离心泵的旋转部件同步旋转的同时，又沿悬臂式离心泵的旋转部件的轴向流动的热交换液体循环通道。
如图4所示，所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第一通道201，由右密封压盖52与轴套11之间所形成的且位于所述节流环16临近左密封压盖51一侧的空间构成的第二通道202，形成在所述轴套11上的第三通道203，形成在所述泵轴7外周面与轴套11内周面之间的第四通道204，一体形成在所述轴套11上和右密封压盖52的节流环16与大气端密封动环17、远离大气端密封静环18之间的空间内的第五通道205，由所述大气端密封动环17与右密封压盖52之间所形成的并设置有大气端泵效环19的空间构成的第六通道206，形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第七通道207。
如图6所示，所述的形成在泵轴7外周面与轴套11内周面之间的第四通道204是由设置于所述泵轴7外周面与轴套11内周面之间的多条密封条20所搭成的通道，所述的多条密封条20分别嵌入在所述泵轴7的外周面内。
如图7所示，所述的热交换液体循环通道还可以是包括有依次相连通的：形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第一通道201，由右密封压盖52与轴套11之间所形成的且位于所述节流环16临近左密封压盖51一侧的空间构成的第二通道202，形成在所述轴套11上的第三通道203，形成在所述泵轴7内部的第八通道208，形成在所述泵轴7外周面和轴套11内周面之间的第九通道209，一体形成在所述轴套11上和右密封压盖52的节流环16与大气端密封动环17、远离大气端密封静环18一侧之间的空间内的第五通道205，由所述大气端密封动环17与右密封压盖52之间所形成的并设置有大气端泵效环19的空间构成的第六通道206，形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第七通道207。
如图9所示，所述的形成在泵轴7内部的第八通道208是由一端与所述的第三通道203相连通且沿泵轴7径向形成的第一径向通道2081，一端与所述第一径向通道2081的另一端相连通且沿泵轴7轴向形成的轴向通道2082，以及一端与所述的轴向通道2082的另一端相连通且沿泵轴7径向形成的第二径向通道2083，所述第二径向通道2083的另一端与所述的第九通道209相连通。
如图3、图5、图8所示，本发明的一种悬臂式离心泵的冷却液或加热液循环系统，还 可以是包括有一端与叶轮10相连的泵轴7，套在所述泵轴7外周的轴套11，从叶轮10一侧开始沿轴套11的轴向依次衔接套在所述轴套11外周的左密封压盖51和右密封压盖52，所述的左密封压盖51和右密封压盖52与所述的轴套11之间分别形成有一定的空间，所述左密封压盖51与所述轴套11之间的空间内设置有与所述的轴套11固定连接的介质端密封动环12和与所述左密封压盖51固定连接的介质端密封静环13，所述右密封压盖52与所述轴套11之间的空间内在远离左密封压盖51的部分空间设置有与所述的轴套11固定连接的大气端密封动环17和与所述右密封压盖52固定连接的大气端密封静环18，所述右密封压盖52与所述轴套11之间的空间内在临近左密封压盖51的部分空间设置有与所述的轴套11固定连接的节流密封动环14和与所述右密封压盖52固定连接的节流密封静环15，所述的节流密封静环15与所述的节流密封动环14接触连接，在所述的右密封压盖52与轴套11之间的空间、轴套11、泵轴7之间形成有一条通过外部管路9连接位于外部的热交换器8且能够使热交换液体在随悬臂式离心泵的旋转部件同步旋转的同时，又沿悬臂式离心泵的旋转部件的轴向流动的热交换液体循环通道。
如图5所示，所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第一通道201，由所述的右密封压盖52与节流密封动环14之间所形成的第二通道202，一体形成在节流密封动环14远离节流密封静环15一侧与左密封压盖51之间的空间内以及所述轴套11内的第三通道203，形成在所述泵轴7外周面与轴套11内周面之间的第四通道204，一体形成在所述轴套11内以及由右密封压盖52上的节流密封静环15与大气端密封动环17远离大气密封静环18一侧之间的空间内的第五通道205，由所述大气端密封动环17与右密封压盖52之间所形成的并设置有大气端泵效环19的空间构成的第六通道206，形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第七通道207。
如图6所示，所述的形成在泵轴7外周面与轴套11内周面之间的第四通道204是由设置于所述泵轴7外周面与轴套11内周面之间的多条密封条20所搭成的通道，所述的多条密封条20分别嵌在所述泵轴7的外周面上。
如图8所示，所述的热交换液体循环通道还可以是包括有依次相连通的：形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第一通道201，由所述的右密封压盖52与节流密封动环14之间所形成的第二通道202，一体形成在节流密封动环14远离节流密封静环15一侧和左密封压盖51之间的空间内以及所述轴套11内的第三通道203，形成在所述泵轴7内部的第八通道208，形成在所述泵轴7外周面和轴套11内周面之间的第九通道209，一体形成在所述轴套11内以及由右密封压盖52上的节流静环15与大气端密封动环17远离大气端密封静环一侧之间的空间内的第五通道205，由所述大气端密封动环17与右密封压盖52之间所形成的并设置有大气端泵效环19的空间构成的第六通道206，形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8进液端或出液端的第七通道207。
如图9所示，所述的形成在泵轴7内部的第八通道208是由一端与所述的第三通道203相连通且沿泵轴7径向形成的第一径向通道2081，一端与所述第一径向通道2081的另一端 相连通且沿泵轴7轴向形成的轴向通道2082，以及一端与所述的轴向通道2082的另一端相连通且沿泵轴7径向形成的第二径向通道2083，所述第二径向通道2083的另一端与所述的第九通道209相连通。
本发明的一种悬臂式离心泵的冷却液或加热液循环系统第一实施例(图4所示)的工作过程是：用于对悬臂式离心泵内部进行换热的液体从热交换器8通过外部管路9依次进入相连通的形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8出液端或进液端的第一通道201，由右密封压盖52与轴套11之间所形成的且位于所述节流环16临近左密封压盖51一侧的空间构成的第二通道202，形成在所述轴套11上的第三通道203，形成在所述泵轴7外周面与轴套11内周面之间的第四通道204，一体形成在所述轴套11上和右密封压盖52的节流环16与大气端密封动环17远离大气端密封静环18一侧之间的空间内的第五通道205，由所述大气端密封动环17与右密封压盖52之间所形成的并设置有大气端泵效环19的空间构成的第六通道206，形成在所述右密封压盖52上且外端口通过外部管路9连接所述热交换器8进液端或进液端的第七通道207，与悬臂式离心泵内部的旋转部件，特别是泵轴7进行热交换，热交换后的液体从位于右密封压盖52内的第七通道207流出通过外部管路9进入热交换器8进行热交换后，又通过外部管路9进入右密封压盖52中的第一通道201继续与悬臂式离心泵内部的旋转部件进行换热。如此循环，实现了对悬臂式离心泵内的旋转部件的热交换。在右密封压盖52的进液口和出液口这两个通道之间布置有节流环16就使得从热交换液体循环通道的进液口进入悬臂式离心泵的流体大部分按照设计好的热交换液体循环通道在悬臂式离心泵体内流动，走完全部路程以后再从热交换液体循环通道的出液口流出，基本上避免了流体刚从进液口进来马上超短路就从出液口流走，因为在这个过程中没有进行热交换。用节流环代替机械密封能节省轴向空间、结构简单、成本低、加工周期短。
图5所示的本发明的一种悬臂式离心泵的冷却液或加热液循环系统第二实施例的工作过程与上述图4所述的第一实施例的工作过程相同，只是第二实施例右密封压盖52与轴套11之间的空间内设置有节流密封动环14和节流密封静环15。在右密封压盖52的进液口和出液口这两个通道之间布置一套节流机械密封，即节流密封动环14和节流密封静环15就使得从热交换液体循环通道的进液口进入悬臂式离心泵的流体可靠地按照设计好的热交换液体循环通道在悬臂式离心泵体内流动，走完全部路程以后再从热交换液体循环通道的出液口流出，杜绝了流体刚从进液口进来马上超短路就从出液口流走，因为在这个过程中没有进行热交换。
图7、图8所示的本发明的一种悬臂式离心泵的冷却液或加热液循环系统三实施例和第四实施例的工作过程与第一实施例和第二实施例的工作过程相同，只是在第三实施例和第四中用于热交换的液体是在泵轴7的内部进行移动，与泵轴7进行热交换。而在第一实施例和第二实施例中用于热交换的液体是在泵轴1的表面移动，与泵轴1进行热交换。
在整个循环过程中，虽然悬臂式离心泵输送的流体物料受到炼油或化工工艺的限制而温度恒定，也就是说物料会把热量传给旋转部件，但是，热量传递需要时间，采用本发明的悬臂式离心泵的冷却液或加热液循环系统，离心泵的旋转部件在温度还没有来得及发生变化时又与流经本发明的冷却液循环系统进行了新的热交换。因此，所述的旋转部件的温度总是能够控制在所希望的范围之内。

Claims (10)

  1. 一种悬臂式离心泵的冷却液或加热液循环系统，包括有一端与叶轮(10)相连的泵轴(7)，套在所述泵轴(7)外周的轴套(11)，从叶轮(10)一侧开始沿轴套(11)的轴向依次衔接套在所述轴套(11)外周的左密封压盖(51)和右密封压盖(52)，所述的左密封压盖(51)和右密封压盖(52)与所述的轴套(11)之间分别形成有一定的空间，所述左密封压盖(51)与所述轴套(11)之间的空间内设置有与所述的轴套(11)固定连接的介质端密封动环(12)和与所述左密封压盖(51)固定连接的介质端密封静环(13)，所述右密封压盖(52)与所述轴套(11)之间的空间内在远离左密封压盖(51)的部分空间设置有与所述的轴套(11)固定连接的大气端密封动环(17)和与所述右密封压盖(52)固定连接的大气端密封静环(18)，其特征在于，所述的右密封压盖(52)的内周面与所述的轴套(11)之间设置有节流环(16)，在所述的右密封压盖(52)与轴套(11)之间的空间、轴套(11)、泵轴(7)之间形成有一条通过外部管路(9)连接位于外部的热交换器(8)且能够使热交换液体在随悬臂式离心泵的旋转部件同步旋转的同时，又沿悬臂式离心泵的旋转部件的轴向流动的热交换液体循环通道。
  2. 根据权利要求1所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第一通道(201)，由右密封压盖(52)与轴套(11)之间所形成的且位于所述节流环(16)临近左密封压盖(51)一侧的空间构成的第二通道(202)，形成在所述轴套(11)上的第三通道(203)，形成在所述泵轴(7)外周面与轴套(11)内周面之间的第四通道(204)，一体形成在所述轴套(11)上和右密封压盖(52)的节流环(16)与大气端密封动环(17)、远离大气端密封静环(18)一侧之间的空间内的第五通道(205)，由所述大气端密封动环(17)与右密封压盖(52)之间所形成的并设置有大气端泵效环(19)的空间构成的第六通道(206)，形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第七通道(207)。
  3. 根据权利要求2所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的形成在泵轴(7)外周面与轴套(11)内周面之间的第四通道(204)是由设置于所述泵轴(7)外周面与轴套(11)内周面之间的多条密封条(20)所搭成的通道，所述的多条密封条(20)分别嵌入在所述泵轴(7)的外周面内。
  4. 根据权利要求1所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第一通道(201)，由右密封压盖(52)与轴套(11)之间所形成的且位于所述节流环(16)临近左密封压盖(51)一侧的空间构成的第二通道(202)，形成在所述轴套(11)上的第三通道(203)，形成在所述泵轴(7)内部的第八通道(208)，形成在所述泵轴(7)和轴套(11)之间的第九通道(209)，一体形成在所述轴套(11)上和右密封压盖(52)的节流环(16)与大气端密封动环(17)、 远离大气端密封静环(18)一侧之间的空间内的第五通道(205)，由所述大气端密封动环(17)与右密封压盖(52)之间所形成的并设置有大气端泵效环(19)的空间构成的第六通道(206)，形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第七通道(207)。
  5. 根据权利要求4所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的形成在泵轴(7)内部的第八通道(208)是由一端与所述的第三通道(203)相连通且沿泵轴(7)径向形成的第一径向通道(2081)，一端与所述第一径向通道(2081)的另一端相连通且沿泵轴(7)轴向形成的轴向通道(2082)，以及一端与所述的轴向通道(2082)的另一端相连通且沿泵轴(7)径向形成的第二径向通道(2083)，所述第二径向通道(2083)的另一端与所述的第九通道(209)相连通。
  6. 一种悬臂式离心泵的冷却液或加热液循环系统，包括有一端与叶轮(10)相连的泵轴(7)，套在所述泵轴(7)外周的轴套(11)，从叶轮(10)一侧开始沿轴套(11)的轴向依次衔接套在所述轴套(11)外周的左密封压盖(51)和右密封压盖(52)，所述的左密封压盖(51)和右密封压盖(52)与所述的轴套(11)之间分别形成有一定的空间，所述左密封压盖(51)与所述轴套(11)之间的空间内设置有与所述的轴套(11)固定连接的介质端密封动环(12)和与所述左密封压盖(51)固定连接的介质端密封静环(13)，所述右密封压盖(52)与所述轴套(11)之间的空间内在远离左密封压盖(51)的部分空间设置有与所述的轴套(11)固定连接的大气端密封动环(17)和与所述右密封压盖(52)固定连接的大气端密封静环(18)，其特征在于，所述右密封压盖(52)与所述轴套(11)之间的空间内在临近左密封压盖(51)的部分空间设置有与所述的轴套(11)固定连接的节流密封动环(14)和与所述右密封压盖(52)固定连接的节流密封静环(15)，所述的节流密封静环(15)与所述的节流密封动环(14)接触连接，在所述的右密封压盖(52)与轴套(11)之间的空间、轴套(11)、泵轴(7)之间形成有一条通过外部管路(9)连接位于外部的热交换器(8)且能够使热交换液体在随悬臂式离心泵的旋转部件同步旋转的同时，又沿悬臂式离心泵的旋转部件的轴向流动的热交换液体循环通道。
  7. 根据权利要求6所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第一通道(201)，由所述的右密封压盖(52)与节流密封动环(14)之间所形成的第二通道(202)，一体形成在节流密封动环(14)远离节流密封静环(15)一侧与左密封压盖(51)之间的空间内以及所述轴套(11)内的第三通道(203)，形成在所述泵轴(7)外周面与轴套(11)内周面之间的第四通道(204)，一体形成在所述轴套(11)内以及由右密封压盖(52)上的节流密封静环(15)与大气端密封动环(17)远离大气端密封静环(18)一侧之间的空间内的第五通道(205)，由所述大气端密封动环(17)与右密封压盖(52)之间所形成的并设置有大气端泵效环(19)的空间构成的第六通道(206)，形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第七通道(207)。
  8. 根据权利要求7所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于， 所述的形成在泵轴(7)外周面与轴套(11)内周面之间的第四通道(204)是由设置于所述泵轴(7)外周面与轴套(11)内周面之间的多条密封条(20)所搭成的通道，所述的多条密封条(20)分别嵌在所述泵轴(7)的外周面上。
  9. 根据权利要求6所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的热交换液体循环通道包括有依次相连通的：形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)出液端或进液端的第一通道(201)，由所述的右密封压盖(52)与节流密封动环(14)之间所形成的第二通道(202)，一体形成在节流密封动环(14)远离节流密封静环(15)一侧和左密封压盖(51)之间的空间内以及所述轴套(11)内的第三通道(203)，形成在所述泵轴(7)内部的第八通道(208)，形成在所述泵轴(7)和轴套(11)之间的第九通道(209)，一体形成在所述轴套(11)内以及由右密封压盖(52)上的节流静环(15)与大气端密封动环(17)远离大气密封静环(18)一侧之间的空间内的第五通道(205)，由所述大气端密封动环(17)与右密封压盖(52)之间所形成的并设置有大气端泵效环(19)的空间构成的第六通道(206)，形成在所述右密封压盖(52)上且外端口通过外部管路(9)连接所述热交换器(8)进液端或出液端的第七通道(207)。
  10. 根据权利要求6所述的一种悬臂式离心泵的冷却液或加热液循环系统，其特征在于，所述的形成在泵轴(7)内部的第八通道(208)是由一端与所述的第三通道(203)相连通且沿泵轴(7)径向形成的第一径向通道(2081)，一端与所述第一径向通道(2081)的另一端相连通且沿泵轴(7)轴向形成的轴向通道(2082)，以及一端与所述的轴向通道(2082)的另一端相连通且沿泵轴(7)径向形成的第二径向通道(2083)，所述第二径向通道(2083)的另一端与所述的第九通道(209)相连通。
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