CN113236572B

CN113236572B - High-temperature pump

Info

Publication number: CN113236572B
Application number: CN202110664514.7A
Authority: CN
Inventors: 胡永波; 蒋长兴; 杨云; 蒋元成; 徐雪敏
Original assignee: Jiangsu Changkai Mechanical Equipment Co ltd
Current assignee: Jiangsu Changkai Mechanical Equipment Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2023-05-12
Anticipated expiration: 2041-06-15
Also published as: CN113236572A

Abstract

The invention belongs to the technical field of high-temperature pumps, and particularly relates to a high-temperature pump which comprises a pump body, wherein a heat insulation plate, a first seat body, a second seat body and a third seat body are sequentially arranged at the upper end of the pump body from bottom to top; a cavity I is arranged between the base body III and the base body II, and a fan blade I is arranged on a main shaft positioned in the cavity I; the second seat body is provided with a first through hole communicated with the first cavity, and an air cooling heat dissipation device fixedly connected to the main shaft is arranged in the first through hole; the first seat body is provided with a second cavity, and the second cavity is communicated with the first through hole through the second through hole arranged on the first seat body; a first bearing is arranged in the second through hole, and first radiating fins are uniformly distributed on the first bearing along the circumferential direction; a guide plate is arranged between the first through hole and the second through hole; a second fan blade is arranged on the main shaft positioned in the second cavity; the spindle positioned at the lower part of the fan blade II is sleeved with a water cooling device which is connected with a water inlet pipe.

Description

High-temperature pump

Technical Field

The invention belongs to the technical field of high-temperature pumps, and particularly relates to a high-temperature pump.

Background

The high-temperature pump is mainly suitable for conveying high-temperature media, and when the pump runs for a long time, the lubricating oil in the bearing box can be slowly heated due to heat transfer of the pump shaft, so that the lubricating oil is invalid, and the bearing is invalid, so that the pump is destroyed. In the prior art, the bearing box is usually cooled by using air cooling and water cooling.

A double insulated heat shield system for a high temperature pump is disclosed as publication number CN 108626175B. The double heat-insulating heat shielding system for the high-temperature pump is arranged above the water outlet bent pipe and mainly comprises ten parts of a first heat-insulating semicircular disc, a second heat-insulating semicircular disc, a heat-insulating circular disc, an exhaust pipe, a heat shielding bracket, a heat shielding lower cover, a drainage device, a heat radiating assembly, a heat shielding upper cover and an air inlet pipe, and the heat shielding system for the high-temperature pump is characterized in that a double heat-insulating method is adopted for a pump shaft and a pump head, and a heat-insulating structure with a brand new design is adopted for heat blocking the assembly above the pump head of the high-temperature pump, so that a good heat shielding effect is achieved for a motor module and a control monitoring module of the high-temperature pump.

As another example, publication number CN102042268A discloses a high temperature resistant pump, which comprises a pump body, an impeller, a shaft sleeve, a pump shaft and a pump cover, wherein: the pump body is U-shaped, the pump body is arranged on the shaft sleeve, and the shaft sleeve is arranged on the pump shaft; the impeller is arranged on the pump shaft and is positioned in the pump body groove; the pump cover is connected to the front end of the pump body; the pump shaft is connected with the motor main shaft; a shaft heat dissipation sleeve and a fan are sequentially arranged between the pump body and the motor; the shaft heat dissipation sleeve is connected with the pump body, the middle of the shaft heat dissipation sleeve is in a round column shape, and round heat dissipation fins are uniformly distributed around the shaft heat dissipation sleeve; the shaft heat dissipation sleeve is externally provided with a shell, and two ends of the shell are respectively connected with the motor and the pump body; a mechanical sealing element is arranged between the shaft heat dissipation sleeve and the fan, and the mechanical sealing element is arranged on the shaft heat dissipation sleeve. The invention is a novel high temperature resistant pump with simple structure, low cost, simple process, long service life and simple maintenance.

The high-temperature pump in the prior art can only adopt single air cooling or water cooling to dissipate heat; meanwhile, the high-temperature pump in the prior art has low cooling water utilization efficiency and cannot effectively dissipate heat of the main shaft and the bearing; meanwhile, the high-temperature pump in the prior art often needs an external air source, and is inconvenient to use.

Disclosure of Invention

In view of the above-mentioned shortcomings, it is an object of the present invention to provide a high temperature pump.

The invention provides the following technical scheme:

a high-temperature pump comprises a pump body, wherein the upper end of the pump body is provided with a heat insulation plate, a first seat body, a second seat body and a third seat body in sequence from bottom to top; a main shaft is arranged in the pump body, and one end of the main shaft extending out of the base body is connected with a motor through a coupler;

a cavity I is arranged between the base body III and the base body II, and a fan blade I is arranged on a main shaft positioned in the cavity I; an air inlet communicated with the cavity I is uniformly distributed on the seat body III;

the second seat body is provided with a first through hole communicated with the first cavity, and an air cooling heat dissipation device fixedly connected to the main shaft is arranged in the first through hole;

the first seat body is provided with a second cavity, and the second cavity is communicated with the first through hole through the second through hole arranged on the first seat body; a first bearing is arranged in the second through hole, and first radiating fins are uniformly distributed on the first bearing along the circumferential direction; a guide plate is arranged between the first through hole and the second through hole;

a second fan blade is arranged on the main shaft positioned in the second cavity; a water cooling device is sleeved on the main shaft positioned at the lower part of the fan blade II and is connected with a water inlet pipe; air outlet holes communicated with the cavity II are uniformly distributed on the seat body I;

the upper end of the heat insulation plate is provided with a water cooling plate, and the water cooling plate is connected with a water cooling device through a water outlet pipe.

The air-cooling heat dissipation device comprises a sleeve, and a plurality of groups of second heat dissipation fins are fixedly connected on the outer circumferential surface of the sleeve at intervals along the axial direction; each group of second radiating fins comprises a plurality of fan-shaped fins fixedly connected to the sleeve at intervals along the circumferential direction, and radiating holes are uniformly distributed on the fan-shaped fins.

The guide plate comprises a guide plate body fixedly connected with the first seat body, a ventilation cavity is arranged in the guide plate body, the upper side of the ventilation cavity is communicated with the first through hole, and the lower side of the ventilation cavity is communicated with the second through hole; a sealing sleeve is arranged between the guide plate body and the main shaft.

And a side air duct is arranged on the second seat body, one end of the side air duct is communicated with the first cavity, and the other end of the side air duct is communicated with the upper side of the ventilation cavity.

The water-cooling heat dissipation device comprises a heat dissipation body, wherein the cross section of the heat dissipation body is I-shaped; the heat radiation body is provided with a through hole III for the main shaft to pass through; a cooling water channel wound around the through hole in a triple spiral way is arranged in the heat dissipation body; one end of the cooling water channel is connected with the water inlet pipe, and the other end of the cooling water channel is connected with the water outlet pipe; radiating fins III are uniformly distributed on the radiating body along the circumferential direction; the radiator is fixedly connected with a supporting rod which is fixedly connected with the cavity wall of the cavity II.

And three ends of the radiating fin are flush with the air outlet holes.

A spiral water channel is arranged in the water cooling plate; one end of the spiral water channel is connected with the water outlet pipe, and the other end of the spiral water channel is provided with a water outlet.

And a guide bearing is arranged in the heat insulation plate.

The upper end of the guide bearing is contacted with the lower end of the water cooling plate.

A filter screen is arranged in the air inlet.

The beneficial effects of the invention are as follows:

1. according to the invention, the fan blade I and the fan blade II are arranged on the main shaft, so that the main shaft rotates to generate air flow, and the main shaft and each bearing are subjected to heat dissipation without external air source;

2. according to the invention, the water-cooling heat dissipation device is arranged, so that the main shaft can be cooled by water when necessary, and the air flows generated by the fan blade I and the fan blade II can be utilized to cool the water-cooling heat dissipation device, so that cooling water can be cooled at the same time;

3. according to the invention, the water cooling plate is arranged, so that cooling water discharged by the water cooling device can be used for radiating heat of the bearing and the heat insulation plate, the heat radiation performance is improved, and meanwhile, the utilization efficiency of the cooling water is also improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a top view of an air-cooled heat sink according to the present invention;

FIG. 3 is an enlarged view at A in FIG. 1;

FIG. 4 is a top view of a water-cooled heat sink according to the present invention;

fig. 5 is a sectional view taken along the direction B-B in fig. 4.

Marked in the figure as: the cooling device comprises a third seat body 101, a coupling 102, a second bearing 103, an air inlet 104, a second seat body 105, a first seat body 106, a first radiating fin 107, a first bearing 108, an inlet pipe 109, an air outlet 110, a fixing part 111, a heat insulation plate 112, a pump body 113, a guide bearing 114, a main shaft 201, a first fan blade 202, a side air channel 203, a first through hole 204, a second cavity 205, a second fan blade 206, an air cooling device 300, a fan-shaped fin 301, a radiating hole 302, a sleeve 303, a guide plate body 401, a ventilation channel 402, a sealing sleeve 403, a water cooling device 500, a supporting rod 502, a third radiating fin 503, an outlet pipe 504, a third through hole 506 and a cooling water channel 508.

Detailed Description

Example 1

As shown in fig. 1, a high temperature pump includes a pump body 113, wherein the pump body 113 includes a water inlet section, a mixed flow impeller, a space vane, a water pumping pipe and a water outlet section. The upper end of the pump body 113 is provided with a heat insulation plate 112, a first seat body 106, a second seat body 105 and a third seat body 101 in sequence from bottom to top. The heat shield 112 is made of stainless steel. The first seat body 106 and the second seat body 105, and the second seat body 105 and the third seat body 101 are connected through bolts, so that the detachable seat is detachable and convenient to assemble and overhaul. A main shaft 201 is arranged in the pump body 113, one end of the main shaft 201 extends out of the third seat body 101, and a second bearing 103 is arranged between the main shaft 201 and the third seat body 101, and the second bearing 103 is far away from the pump body 113, so that heat dissipation is not needed. One end of the spindle 201 extending out of the first base 101 is connected with a motor through a coupling 102, so that the motor can drive the spindle 201 to rotate by starting the motor.

The heat shield 112 is provided with a fixing portion 111 so that the heat shield 112 can be fixedly installed on a corresponding apparatus.

Grooves are formed at the contact ends of the third seat body 101 and the second seat body 105, so that a first cavity is formed between the third seat body 101 and the second seat body 105. A fan blade I202 is arranged on a main shaft 201 positioned in the cavity I, and air inlets 104 communicated with the cavity I are uniformly distributed on the seat body III 101. When the spindle 201 rotates, the first fan blade 202 rotates, so that air flow is generated, and external cold air flow enters the first cavity through the air inlet hole 104. In order to prevent foreign matters such as dust from entering the first cavity, a filter screen is installed in the air inlet hole 104.

The second seat 105 is provided with a first through hole 204 communicated with the first cavity, and an air cooling and radiating device 300 fixedly arranged on the main shaft 201 is arranged in the first through hole 204. Specifically, as shown in fig. 2, the air-cooled heat dissipating apparatus 300 includes a sleeve 303, and the sleeve 303 is fixedly mounted on the main shaft 201 by a flat key. A plurality of second groups of radiating fins are fixedly connected to the outer circumferential surface of the sleeve 303 at intervals along the axial direction, each second group of radiating fins comprises a plurality of fan-shaped fins 301 fixedly mounted on the sleeve 303 at intervals along the circumferential direction, and radiating holes 302 are uniformly distributed on the fan-shaped fins 301. Both the sleeve 303 and the fan fins 301 are made of a metal that is easily thermally conductive so that heat from the main shaft 201 is transferred to the fan fins 301. When the spindle 201 rotates, the air flow generated by the first rotating fan blade 202 enters the first through hole 204, and the air flow passes through the space between the fan-shaped fins 301 and the heat dissipation holes 302, so that heat on the fan-shaped fins 301 is taken away, and the spindle 201 is dissipated.

The first seat 106 is provided with a second cavity 205, and the second cavity 205 is connected with the first through hole 204 through the second through hole provided in the first seat 106, so that the air flow entering the first cavity can enter the second cavity 205. A first bearing 108 is mounted in the second through hole, and the spindle 201 is mounted on the first bearing 108. Since the first bearing 108 is close to the pump body 113, heat dissipation from the first bearing 108 is required. Specifically, the first heat dissipation fins 107 are uniformly distributed on the first bearing 108 along the circumferential direction, the first heat dissipation fins 107 are made of metal which is easy to conduct heat, and air flow passing through the first through holes 204 can pass through between two adjacent first heat dissipation fins 107, so that heat is dissipated to the first heat dissipation fins 107.

In order to allow the air flow passing through the first through hole 204 to sufficiently circulate between the adjacent two first fins 107, a baffle is installed between the first through hole 204 and the second through hole. Specifically, as shown in fig. 3, the guide plate includes a guide plate body 401 fixedly connected to the first seat body 106, the spindle 201 passes through a through hole five provided in the guide plate body 401, and a sealing sleeve 403 is installed between the guide plate body 401 and the spindle 201, so that the air flow flowing out from the first vent hole 204 does not pass through the through hole five. The air guide plate body 401 is internally provided with an air ventilation cavity channel 402, the upper side of the air ventilation cavity channel 402 is communicated with the first through hole 204, and the lower side of the air ventilation cavity channel 402 is communicated with the second through hole, so that air flow in the first through hole 204 can flow into the second through hole through the air ventilation cavity channel 402, further passes through between two adjacent first radiating fins 107 and flows into the second cavity 205.

In order to increase the flow rate of the air flow, the air flow is made to flow faster in the first through hole 204, the ventilation channel 402 and the second through hole, so that the fan-shaped fin 301 and the first radiating fin 107 are fully radiated, and the second fan blade 206 is mounted on the main shaft 201 positioned in the second cavity 205. When the spindle 201 rotates, the second blade 206 rotates together, so that the air flow passes through the first through hole 204, the ventilation channel 402 and the second through hole faster. The first seat 106 is uniformly provided with air outlet holes 110 communicated with the second cavity 205, and hot air flows are discharged through the air outlet holes 110. The rotating second blade 206 also creates a negative pressure environment within the second cavity 205, thereby allowing the cold air flow to flow faster into the first cavity, and the air flow flowing into the first cavity to flow into the second cavity 205.

A water cooling device 500 is sleeved on the main shaft 201 positioned at the lower part of the fan blade II 206. Specifically, as shown in fig. 4 and 5, the water-cooling heat dissipation device 500 includes a heat dissipation body 501, the heat dissipation body 501 has an i-shaped cross section, and the heat dissipation body 501 is made of metal that is easy to conduct heat. The heat sink 501 is fixedly connected with a support rod 502, and the support rod 502 is fixedly connected with the cavity wall of the cavity two 205. The heat sink 501 is provided with a third through hole 506 through which the Rong Zhuzhou 201 passes, and the inner diameter of the third through hole 506 is larger than the outer diameter of the spindle 201. A cooling water passage 508 spirally wound around the through-hole three 506 is provided in the radiator 501. One end of the cooling water channel 508 is connected with the water inlet pipe 109, and the other end of the cooling water channel 508 is connected with the water outlet pipe 504. Therefore, the cooling water is injected to radiate heat to the heat radiating body 501, so that the heat conducted from the spindle 201 to the heat radiating body 501 is continuously absorbed by the cooling water.

In order to improve the utilization efficiency of the cooling water, third radiating fins 503 are uniformly distributed on the heat radiating body 501 along the circumferential direction, and the third radiating fins 503 are made of metal which is easy to conduct heat. The air flow entering the cavity II 205 can pass through the space between the adjacent two third radiating fins 503, so that the third radiating fins 503 can be subjected to air cooling heat dissipation, and the heat dissipation body 501 can be subjected to heat dissipation; and the cooling water can be radiated, so that the service efficiency of the cooling water is improved. Accordingly, the lower end of the third heat radiating fin 503 should be flush with the air outlet hole 110. So that the hot gas flow having undergone sufficient heat absorption is discharged from the gas outlet holes 110. Through making the air current flow from low temperature region to high temperature region to can dispel the heat step by step, make full use of the air current, guaranteed the heat dispersion simultaneously.

Example two

The first difference between the present embodiment and the first embodiment is that a side air duct 203 is provided on the second seat 105, one end of the side air duct 203 is connected to the first cavity, and the other end of the side air duct 203 is connected to the upper side of the ventilation cavity 402. A portion of the cold air flow in the first cavity may flow into the ventilation channel 402 through the side air duct 203 and further into the second through hole, so as to ensure a certain proportion of the cold air flow entering the second through hole, thereby improving the heat dissipation efficiency of the first heat dissipation fin 107.

Example III

The embodiment is different from the embodiment in that a water cooling plate 601 is installed at the upper end of the heat insulation plate 112, and the water cooling plate 601 is made of a material which is easy to conduct heat. A spiral water channel 603 is arranged in the water cooling plate 601. One end of the spiral water channel 603 is connected with the water outlet pipe 504, and the other end of the spiral water channel 503 is provided with a water outlet 602. A guide bearing 114 is installed in the heat insulating plate 112, and the upper end of the guide bearing 114 is in contact with the lower end of the water cooling plate 601. The cooling water flowing out from the water outlet pipe 504 enters the spiral water channel 603, so that the water cooling plate 601 can radiate heat to the heat insulation plate 112 and also radiate heat to the guide bearing 114. By passing the cooling water into the water cooling plate 601, the utilization efficiency of the cooling water is further improved, and heat dissipation of the guide bearing 114 and the heat insulating plate 112 is also achieved.

A certain gap can be reserved between the lower end of the heat radiation body 501 and the upper end of the water cooling plate 601, so that air flow can pass through the third through hole 506, and heat radiation can be performed on the main shaft 201 through air cooling.

The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-temperature pump comprises a pump body (113), wherein a heat insulation plate (112), a first seat body (106), a second seat body (105) and a third seat body (101) are sequentially arranged at the upper end of the pump body (113) from bottom to top; a main shaft (201) is arranged in the pump body (113), and one end of the main shaft (201) extending out of the seat body III (101) is connected with a motor through a coupler (102); the method is characterized in that:

a first cavity is arranged between the third seat body (101) and the second seat body (105), and a first fan blade (202) is arranged on a main shaft (201) positioned in the first cavity; an air inlet hole (104) communicated with the first cavity is uniformly distributed on the third seat body (101);

a first through hole (204) communicated with the first cavity is formed in the second base body (105), and an air cooling and radiating device (300) fixedly connected to the main shaft (201) is arranged in the first through hole (204);

the first seat body (106) is provided with a second cavity (205), and the second cavity (205) is communicated with the first through hole (204) through the second through hole arranged on the first seat body (106); a first bearing (108) is arranged in the second through hole, and first radiating fins (107) are uniformly distributed on the first bearing (108) along the circumferential direction; a guide plate is arranged between the first through hole (204) and the second through hole;

a second fan blade (206) is arranged on the main shaft (201) positioned in the second cavity (205); a water cooling device (500) is sleeved on the main shaft (201) positioned at the lower part of the fan blade II (206), and the water cooling device (500) is connected with a water inlet pipe (109); air outlet holes (110) communicated with the cavity II (205) are uniformly distributed on the seat body I (106);

the upper end of the heat insulation plate (112) is provided with a water cooling plate (601), and the water cooling plate (601) is connected with the water cooling device (500) through a water outlet pipe (504);

the water-cooling heat dissipation device (500) comprises a heat dissipation body (501), wherein the cross section of the heat dissipation body (501) is I-shaped; the heat radiation body (501) is provided with a through hole III (506) for allowing the main shaft (201) to pass through; a cooling water channel (508) spirally wound around the through hole III (506) is arranged in the heat radiation body (501); one end of the cooling water channel (508) is connected with the water inlet pipe (109), and the other end of the cooling water channel (508) is connected with the water outlet pipe (504); a third radiating fin (503) is uniformly distributed on the radiating body (501) along the circumferential direction; the radiator (501) is fixedly connected with a supporting rod (502), and the supporting rod (502) is fixedly connected with the cavity wall of the cavity II (205);

the lower end of the third radiating fin (503) is flush with the air outlet hole (110);

a spiral water channel (603) is arranged in the water cooling plate (601); one end of the spiral water channel (603) is connected with the water outlet pipe (504), and the other end of the spiral water channel (603) is provided with a water outlet (602);

a guide bearing (114) is arranged in the heat insulation plate (112); the upper end of the guide bearing (114) is contacted with the lower end of the water cooling plate (601).

2. The cryopump of claim 1, wherein: the air-cooling heat dissipation device (300) comprises a sleeve (303), and a plurality of groups of second heat dissipation fins are fixedly connected on the outer circumferential surface of the sleeve (303) at intervals along the axial direction; each group of second radiating fins comprises a plurality of fan-shaped fins (301) fixedly connected to the sleeve (303) at intervals along the circumferential direction, and radiating holes (302) are uniformly distributed on the fan-shaped fins (301).

3. The cryopump of claim 1 or 2, wherein: the guide plate comprises a guide plate body (401) fixedly connected with the first seat body (106), a ventilation cavity (402) is formed in the guide plate body (401), the upper side of the ventilation cavity (402) is communicated with the first through hole (204), and the lower side of the ventilation cavity (402) is communicated with the second through hole; a sealing sleeve (403) is arranged between the guide plate body (401) and the main shaft (201).

4. A cryopump according to claim 3, wherein: and a side air duct (203) is arranged on the second base body (105), one end of the side air duct (203) is communicated with the first cavity, and the other end of the side air duct (203) is communicated with the upper side of the ventilation cavity (402).

5. The cryopump of claim 1, wherein: a filter screen is arranged in the air inlet hole (104).