CN113236572A

CN113236572A - High-temperature pump

Info

Publication number: CN113236572A
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: 2021-08-10
Anticipated expiration: 2041-06-15
Also published as: CN113236572B

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 base body, a second base body and a third base body are sequentially arranged at the upper end of the pump body from bottom to top; a first cavity is arranged between the third seat body and the second seat body, and a first fan blade is arranged on a main shaft in the first cavity; the base body II is provided with a first through hole communicated with the first cavity, and an air-cooled 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 which is communicated with the through hole through a 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 in the second cavity; the spindle at the lower part of the second fan blade is sleeved with a water-cooling heat dissipation 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 operates for a long time, lubricating oil in the bearing box can be slowly heated due to heat transfer of the pump shaft, so that the lubricating oil fails, a bearing fails, and the pump is damaged. In the prior art, the bearing box is cooled by air cooling and water cooling.

A double insulated heat shield system for high temperature pumps is disclosed as publication No. CN 108626175B. The invention provides a double heat insulation and heat shielding system for a high-temperature pump, which is arranged above a water outlet bent pipe and mainly comprises ten parts, namely a first heat insulation semicircular disc, a second heat insulation semicircular disc, a heat insulation circular disc, an exhaust pipe, a heat shielding support, a heat shielding lower cover, a drainage device, a heat dissipation assembly, a heat shielding upper cover and an air inlet pipe.

Still as publication number CN102042268A discloses a high temperature resistant pump, including the pump body, impeller, axle sleeve, pump shaft, pump cover, wherein: the pump body is U-shaped, and is arranged on a shaft sleeve which is arranged on the pump shaft; the impeller is arranged on the pump shaft and is positioned in the groove of the pump body; the pump cover is connected to the front end of the pump body; the pump shaft is connected with a 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 on the periphery of the shaft heat dissipation sleeve; a shell is arranged outside the shaft heat dissipation sleeve, and two ends of the shell are respectively connected with the motor and the pump body; and 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 disadvantages, 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 a heat insulation plate, a first base body, a second base body and a third base body are sequentially arranged at the upper end of the pump body from bottom to top; a main shaft is arranged in the pump body, and one end of the main shaft extending out of the third seat body is connected with a motor through a coupler;

a first cavity is arranged between the third seat body and the second seat body, and a first fan blade is arranged on a main shaft in the first cavity; the third seat body is uniformly provided with air inlets communicated with the first cavity;

the base body II is provided with a first through hole communicated with the first cavity, and an air-cooled 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 which is communicated with the through hole through a 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 in the second cavity; a water-cooling heat dissipation device is sleeved on the main shaft 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 water cooling plate is arranged at the upper end of the heat insulation plate and is connected with the water cooling heat dissipation device through a water outlet pipe.

The air-cooled heat dissipation device comprises a sleeve, and a plurality of groups of second heat dissipation fins are fixedly connected to 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 which are fixedly connected to the sleeve at intervals along the circumferential direction, and radiating holes are uniformly distributed in the fan-shaped fins.

The guide plate comprises a guide plate body fixedly connected with the first seat body, a ventilation cavity channel is arranged in the guide plate body, the upper side of the ventilation cavity channel is communicated with the first through hole, and the lower side of the ventilation cavity channel is communicated with the second through hole; a sealing sleeve is arranged between the diversion 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, and the cross section of the heat dissipation body is in an I shape; the heat radiation body is provided with a third through hole for the main shaft to pass through; a cooling water channel spirally wound around the through hole is arranged in the heat radiation 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 support rod, and the support rod is fixedly connected with the cavity wall of the cavity II.

And the three ends of the radiating fins 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 in contact with the lower end of the water cooling plate.

And a filter screen is arranged in the air inlet.

The invention has the beneficial effects that:

1. the fan blade I and the fan blade II are arranged on the main shaft, so that the rotating main shaft is utilized to generate airflow to dissipate heat of the main shaft and each bearing without an external air source;

2. the water-cooling heat dissipation device is arranged, so that the spindle can be cooled by water when necessary, and the air flow generated by the fan blade I and the fan blade II can be used for dissipating heat of the water-cooling heat dissipation device, so that cooling water can be dissipated simultaneously;

3. according to the invention, by installing the water cooling plate, the bearing and the heat insulation plate can be cooled by using the cooling water discharged by the water cooling heat dissipation device, so that the heat dissipation performance is improved, and meanwhile, the utilization efficiency of the cooling water is also improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

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

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

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

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

Labeled as: the heat dissipation structure comprises a base body III 101, a coupler 102, a bearing II 103, an air inlet 104, a base body II 105, a base body I106, a heat dissipation fin I107, a bearing I108, an inlet pipe 109, an air outlet 110, a fixing portion 111, a heat insulation plate 112, a pump body 113, a guide bearing 114, a main shaft 201, a fan blade I202, a side air duct 203, a through hole I204, a cavity II 205, a fan blade II 206, an air cooling heat dissipation device 300, a fan-shaped fin 301, a heat dissipation hole 302, a sleeve 303, a deflector body 401, a ventilation cavity channel 402, a sealing sleeve 403, a water cooling heat dissipation device 500, a heat dissipation body 501, a support rod 502, a heat dissipation fin III 503, an outlet pipe 504, a through hole III 506 and a cooling water duct 508.

Detailed Description

Example one

As shown in fig. 1, a high temperature pump includes a pump body 113, and the pump body 113 includes a water inlet section, a mixed flow impeller, a space guide vane, a lift pipe, and a water outlet section. The upper end of the pump body 113 is sequentially provided with a heat insulation plate 112, a first base body 106, a second base body 105 and a third base body 101 from bottom to top. The heat shield 112 is made of stainless steel. The first base body 106 and the second base body 105, and the second base body 105 and the third base body 101 are connected through bolts, so that the base body can be disassembled, and assembly and maintenance are facilitated. A main shaft 201 is installed 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 installed between the main shaft 201 and the third seat body 101, and because the second bearing 103 is far away from the pump body 113, heat dissipation is not needed. One end of the main shaft 201, which extends out of the first seat body 101, is connected with the motor through the coupler 102, so that the motor can drive the main shaft 201 to rotate by starting the motor.

The insulation board 112 is provided with a fixing portion 111 so that the insulation board 112 can be fixedly mounted on a corresponding device.

Grooves are formed in 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. The first fan blades 202 are arranged on the main shaft 201 in the first cavity, and the air inlets 104 communicated with the first cavity are uniformly distributed on the base body three 101. When the main shaft 201 rotates, the first fan blades 202 rotate along with the main shaft, 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.

A first through hole 204 communicated with the first cavity is formed in the second base body 105, and an air cooling heat dissipation device 300 fixedly installed on the main shaft 201 is arranged in the first through hole 204. Specifically, as shown in fig. 2, the air-cooled heat sink 300 includes a sleeve 303, and the sleeve 303 is fixedly mounted on the main shaft 201 by a flat key. A plurality of groups of second radiating fins are fixedly connected to 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 mounted on the sleeve 303 at intervals along the circumferential direction, and radiating holes 302 are uniformly distributed in the fan-shaped fins 301. The sleeve 303 and the fan-shaped fins 301 are made of metal which is easy to conduct heat, so that heat on the spindle 201 can be transferred to the fan-shaped fins 301. When the spindle 201 rotates, air flow generated by the first rotating fan blades 202 enters the first through holes 204, and the air flow passes through the spaces among 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 second cavity 205 is formed in the first seat body 106, and the second cavity 205 is in through connection with the first through hole 204 through the second through hole formed in the first seat body 106, so that the airflow entering the first cavity can enter the second cavity 205. A first bearing 108 is installed in the second through hole, and the main shaft 201 is installed on the first bearing 108. Since the first bearing 108 is close to the pump body 113, heat dissipation needs to be performed on the first bearing 108. 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 easy to conduct heat, and the air flow passing through the first through holes 204 can pass through the space between every two adjacent first heat dissipation fins 107, so that heat is dissipated to the first heat dissipation fins 107.

In order to enable the airflow passing through the first through hole 204 to fully flow between the two adjacent first radiating fins 107, a flow guide plate is arranged between the first through hole 204 and the second through hole. Specifically, as shown in fig. 3, the baffle includes a baffle body 401 fixedly connected to the first seat body 106, the main shaft 201 passes through a fifth through hole formed in the baffle body 401, and a sealing sleeve 403 is installed between the baffle body 401 and the main shaft 201, so that the airflow flowing out of the first through hole 204 does not pass through the fifth through hole. A ventilation channel 402 is arranged in the guide plate body 401, the upper side of the ventilation channel 402 is communicated with the first through hole 204, and the lower side of the ventilation channel 402 is communicated with the second through hole, so that airflow in the first through hole 204 can flow into the second through hole through the ventilation channel 402, further flows between two adjacent first radiating fins 107 and then flows into the second cavity 205.

In order to increase the flow rate of the air flow, the air flow can flow in the first through hole 204, the ventilation channel 402 and the second through hole relatively quickly, so that the fan-shaped fin 301 and the first heat dissipation fin 107 can be fully dissipated, and the second fan blade 206 is mounted on the main shaft 201 in the second cavity 205. When the main shaft 201 rotates, the second fan blade 206 rotates together, so that the airflow passes through the first through hole 204, the ventilation channel 402 and the second through hole relatively quickly. Air outlet holes 110 communicated with the second cavity 205 are uniformly distributed on the first seat body 106, and hot air flow is discharged through the air outlet holes 110. The second rotating fan blade 206 can also form a negative pressure environment in the second cavity 205, so that the cold airflow flows into the first cavity faster, and the airflow flowing into the first cavity flows into the second cavity 205.

The main shaft 201 located at the lower part of the second fan blade 206 is sleeved with a water-cooling heat dissipation device 500. Specifically, as shown in fig. 4 and 5, the water-cooled heat dissipation device 500 includes a heat dissipation body 501, the cross-sectional shape of the heat dissipation body 501 is "i" shaped, and the heat dissipation body 501 is made of metal which is easy to conduct heat. The heating body 501 is fixedly connected with a supporting rod 502, and the supporting rod 502 is fixedly connected with the cavity wall of the second cavity 205. The heat radiator 501 is provided with a third through hole 506 through which the spindle 201 penetrates, and the inner diameter of the third through hole 506 is larger than the outer diameter of the spindle 201. A cooling water channel 508 spirally wound around the third through hole 506 is provided in the heating body 501. One end of the cooling water channel 508 is connected to the water inlet pipe 109, and the other end of the cooling water channel 508 is connected to the water outlet pipe 504. The heat radiating body 501 can thus be radiated by the cooling water by injecting the cooling water, 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, three radiating fins 503 are uniformly distributed on the radiating body 501 along the circumferential direction, and the three radiating fins 503 are made of metal which is easy to conduct heat. The airflow entering the second cavity 205 can pass through the space between the adjacent three cooling fins 503, so that the three cooling fins 503 can be cooled by air, and the heat of the heat radiator 501 can be dissipated; the cooling water can be radiated, so that the use efficiency of the cooling water is improved. Accordingly, the lower end of the third heat dissipating fin 503 is flush with the air outlet 110. Thereby allowing the hot gas stream, which has been sufficiently heat absorbed, to be discharged from the gas outlet hole 110. The air flow flows from the low-temperature area to the high-temperature area, so that heat dissipation can be performed step by step, the air flow is fully utilized, and the heat dissipation performance is guaranteed.

Example two

The difference between the present embodiment and the embodiment is that a side air duct 203 is disposed on the second base 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. A part of cold air flow in the first cavity can flow into the ventilation cavity channel 402 through the side air channel 203 and further flow into the second through hole, so that the air flow entering the second through hole is ensured to have a certain proportion of cold air flow, and the heat dissipation efficiency of the first heat dissipation fin 107 is improved.

EXAMPLE III

The difference between the present embodiment and the embodiment is that the water cooling plate 601 is installed on the upper end of the heat insulation plate 112, and the water cooling plate 601 is made of a material that is easy to conduct heat. The water cooling plate 601 is internally provided with a spiral water channel 603. 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 shield 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 of the water outlet pipe 504 enters the spiral water channel 603, so that the water-cooling plate 601 can radiate heat to the heat-insulating plate 112 and the guide bearing 114. By passing 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 left between the lower end of the heat radiator 501 and the upper end of the water-cooling plate 601, so that the airflow can pass through the third through hole 506, and the spindle 201 can be cooled by air cooling.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement 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 base body (106), a second base body (105) and a third base body (101) are sequentially arranged at the upper end of the pump body (113) from bottom to top; a main shaft (201) is installed in the pump body (113), and one end of the main shaft (201) extending out of the base body III (101) is connected with a motor through a coupler (102); the method is characterized in that:

a first cavity is formed 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) in the first cavity; air inlets (104) communicated with the first cavity are uniformly distributed on the seat body III (101);

a first through hole (204) communicated with the first cavity is formed in the second seat body (105), and an air-cooled heat dissipation 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 a second through hole formed in the first seat body (106); a first bearing (108) is installed 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 heat dissipation device (500) is sleeved on the main shaft (201) positioned at the lower part of the second fan blade (206), and the water-cooling heat dissipation 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 I (106);

the water cooling plate (601) is installed at the upper end of the heat insulation plate (112), and the water cooling plate (601) is connected with the water cooling heat dissipation device (500) through the water outlet pipe (504).

2. A high temperature pump as recited in claim 1, wherein: the air-cooled heat dissipation device (300) comprises a sleeve (303), and a plurality of groups of second heat dissipation fins are fixedly connected to 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) which are 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. A high temperature pump as claimed in 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 channel (402) is arranged in the guide plate body (401), the upper side of the ventilation cavity channel (402) is communicated with the first through hole (204), and the lower side of the ventilation cavity channel (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 high temperature pump as recited in claim 3, wherein: and a side air duct (203) is arranged on the second seat 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 duct (402).

5. A high temperature pump as recited in claim 1, wherein: the water-cooling heat dissipation device (500) comprises a heat dissipation body (501), and the cross section of the heat dissipation body (501) is I-shaped; the heat radiator (501) is provided with a third through hole (506) for the main shaft (201) to pass through; a cooling water channel (508) spirally wound around the third through hole (506) is arranged in the heat radiating 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); third radiating fins (503) are uniformly distributed on the radiating body (501) along the circumferential direction; the heat radiation body (501) is fixedly connected with a support rod (502), and the support rod (502) is fixedly connected with the cavity wall of the second cavity (205).

6. A high temperature pump as recited in claim 5, wherein: the lower ends of the third radiating fins (503) are flush with the air outlet holes (110).

7. A high temperature pump as claimed in claim 1 or 5, wherein: 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).

8. A high temperature pump as recited in claim 7, wherein: and a guide bearing (114) is arranged in the heat insulation plate (112).

9. A high temperature pump as recited in claim 8, wherein: the upper end of the guide bearing (114) is in contact with the lower end of the water cooling plate (601).

10. A high temperature pump as recited in claim 1, wherein: a filter screen is arranged in the air inlet hole (104).