Cooling device for vertical multi-stage pump

Abstract

The utility model relates to the field of pumps, in particular to a cooling device for a vertical multi-stage pump, which comprises a shell, a cooling cavity is arranged in the shell, a heat insulation plate is fixed at the upper end of the shell, a pump head is fixed at the upper end of the heat insulation plate, and a pump shaft penetrates through the central positions of the pump head and the heat insulation plate. The cooling cavity and the heat insulation plate are arranged to form a good cooling and heat preservation structure, heat of a high-temperature medium is well prevented from being transmitted upwards, and finally the shaft seal and the motor are well protected. Through the arrangement of the first cooling sleeve and the second cooling sleeve, on one hand, the cooling and heat insulation effects are further improved, on the other hand, the cooling sleeves are arranged to be of an upper and lower two-section type structure, the part machining cost is greatly reduced, the upper and lower two-section type sealing structure guarantees smaller clamping stagnation flow, the middle is a metal section, and the better heat dissipation effect is achieved; and the cooling effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pump field especially relates to a cooling device for vertical multistage pump. BACKGROUND

[0002] During the operation of the pump, a large amount of heat is generated due to the friction between the liquid and the pump body and the friction between the internal components of the pump. If this heat cannot be dissipated in time, it will cause the temperature of each component of the pump to rise, thereby triggering a series of problems. In addition, when the pump is used to transport medium at a high temperature or in a high-temperature environment, the pump needs to be cooled to ensure its normal use. The cooling of the pump requires the use of a cooling device. The patent with the application number CN202420477365.2 discloses a plunger pump cooling device. This cooling device can circulate the cooling of the plunger through the setting of the cooling liquid tank, the cooling box, the liquid inlet pipe, the liquid outlet pipe, and the blowdown valve. Although this cooling device can cool the plunger to a certain extent, its cooling range and effect are very limited. Especially when the medium temperature is high, the heat of the medium will be transmitted upwards through the pump shell and other components to the plunger, pump head, and oil cylinder above the cooling box. These components cannot be cooled and cooled in time by this cooling device, and the cooling effect is poor, thereby causing damage to the plunger and oil cylinder and ultimately affecting the service life of the plunger pump. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a cooling device for vertical multistage pump, which solves the problems existing in the prior art. The utility model greatly improves the cooling effect by the setting of the cooling cavity, the heat insulation plate, the first cooling sleeve, and the second cooling sleeve, thereby greatly improving the temperature resistance of the pump and increasing the service life of the pump.

[0005] (II) Technical solutions

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling device for vertical multistage pump, comprising a shell, a cooling cavity is arranged in the shell, a heat insulation plate is fixed to the upper end of the shell, a pump head is fixed to the upper end of the heat insulation plate, a pump shaft penetrates the center position of the pump head and the heat insulation plate, and a first cooling sleeve and a second cooling sleeve are arranged at the upper end and the lower end of the heat insulation plate part through which the pump shaft passes.

[0007] Preferably, the shell comprises a barrel-shaped shell, a top shell is fixed to the top of the barrel-shaped shell, an embedding groove is arranged at the center position of the top shell, and a first annular support table is fixed to the top edge of the top shell.

[0008] Preferably, the heat insulation plate comprises an embedded part matched with the embedded groove, the embedded part is provided with a first O-shaped ring clamping groove, the first O-shaped ring clamping groove is provided with a first O-shaped ring, the upper end of the embedded part is fixed with a heat insulation main part, the bottom surface edge of the heat insulation main part is provided with a first annular groove matched with the first annular support table, the upper end center of the heat insulation main part is provided with a first cooling jacket setting groove matched with the first cooling jacket, and the embedded part is provided with a second cooling jacket setting groove matched with the second cooling jacket.

[0009] Preferably, the height of the end of the top shell connected with the first annular support table is higher than the height of the end connected with the embedded groove.

[0010] Preferably, the barrel-shaped shell is provided with a screw plug and a gas release screw plug.

[0011] Preferably, the height of the bottom surface of the heat insulation main part gradually decreases from outside to inside, and the top surface of the heat insulation main part comprises a horizontal section and a raised section.

[0012] Preferably, the top surface edge of the heat insulation plate is fixed with a second annular support table, the bottom surface edge of the pump head is provided with a second annular groove matched with the second annular support table, the second annular groove is provided with a second O-shaped ring clamping groove, and the second O-shaped ring clamping groove is provided with a second O-shaped ring.

[0013] Preferably, the top center of the pump head is sealed with the pump shaft through a mechanical seal.

[0014] Preferably, the pump head is provided with an automatic exhaust device.

[0015] Preferably, the materials of the first cooling jacket and the second cooling jacket are tetrafluoropropane.

[0016] (Three) beneficial effects

[0017] 1. The utility model discloses a cooling cavity and heat insulation plate are set up and form good cooling heat preservation structure, and the heat of high temperature medium is prevented from transmitting upward, and the shaft seal and motor are finally well protected, and the first cooling jacket and the second cooling jacket are set up, one aspect further improves the cooling heat insulation effect, and the other aspect sets up the form of cooling jacket into the two-section structure of first cooling jacket and second cooling jacket, and the two-section structure is relative to the whole section structure, and the cost of part processing is greatly reduced, and the sealing structure of two-section type guarantees that the flow of jam is smaller, and the middle metal section has better heat dissipation effect, and the cooling effect is greatly improved.

[0018] 2. The utility model discloses a shell is set up by barrel-shaped shell and top shell, forms the wrapped type cooling, and the range and cooling effect of cooling are greatly improved.

[0019] 3. The utility model discloses a first annular support platform and first annular groove are set to the embedding groove and embedding part, relative to the conventional screw type connection mode, the connection fixing of heat insulation plate and shell is greatly facilitated, and installation is more convenient, efficient, and the coaxial precision of part processing is more easily guaranteed, and the processing efficiency is higher, and the embedding part is clamped between the shell and the second cooling jacket, and the cooling and heat insulation effect of the junction with the pump shaft is greatly improved.

[0020] 4. The utility model discloses the height of one end of top shell and first annular support platform is connected is set higher than the height of one end of embedding groove, makes top shell present conical, this on one hand strengthens the support intensity of heat insulation plate, promotes stability, on the other hand can make the water drop that is cooled by top shell and condenses on the lower surface of top shell by outside to middle quick flow, makes the lower surface temperature of top shell relatively lower water drop reenters high temperature medium, plays certain cooling effect to high temperature medium to the cooling effect of whole is improved.

[0021] 5. The utility model discloses the height of heat insulation main part bottom surface is set gradually decreases from outside to inside, and its top surface includes horizontal section and raised section, makes heat insulation main part present the state of thick in the middle and thin on the edge, this not only improves the heat insulation effect of pump shaft, but also saves the material, in addition, also facilitates connection and fixed. ACCURACY

[0022] Figure 1 It is the overall schematic diagram of the utility model

[0023] Figure 2 It is the overall schematic diagram of the utility model shell and cooling cavity.

[0024] Figure 3 It is the schematic diagram of the utility model heat insulation plate.

[0025] Figure 4 It is the overall schematic diagram of the utility model.

[0026] Figure 5 It is the overall schematic diagram of the utility model heat insulation plate.

[0027] Figure 6 It is the schematic diagram of the utility model pump head.

[0028] In the figure: 1 - shell, 2 - cooling cavity, 3 - heat insulation plate, 4 - pump head, 5 - pump shaft, 6 - first cooling jacket, 7 - second cooling jacket, 8 - barrel-shaped shell, 9 - top shell, 10 - embedding groove, 11 - first annular support platform, 12 - embedded part, 13 - first O-ring clamping groove, 14 - first O-ring, 15 - heat insulation main body part, 16 - first annular groove, 17 - first cooling jacket setting groove, 18 - second cooling jacket setting groove, 19 - screw block, 20 - gas release screw block, 21 - horizontal section, 22 - raised section, 23 - second annular support platform, 24 - second annular groove, 25 - second O-ring clamping groove, 26 - second O-ring, 27 - mechanical seal, 28 - automatic exhaust device. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Figures 1-6 The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0030] The utility model provides a technical scheme: a cooling device for vertical multistage pump, including casing 1, be equipped with cooling cavity 2 in casing 1, the upper end of casing 1 is fixed with heat insulation board 3, the upper end of heat insulation board 3 is fixed with pump head 4, and the central position of pump head 4 and heat insulation board 3 is penetrated with pump shaft 5, and the upper end and the lower end of the part of heat insulation board 3 that pump shaft 5 passes through are equipped with first cooling jacket 6 and second cooling jacket 7 respectively, wherein cooling cavity 2 is connected with an external cooling medium circulating device, for example, cooling cavity 2 can be connected with cooling liquid tank through circulating pipe, and the cooling liquid in cooling liquid tank enters cooling cavity 2 through circulating pipe, and then returns to cooling liquid tank after cooling casing 1, and the cooling is repeated to cool casing 1, and the cooling mode is similar to the mode in the reference patent in the background art, which belongs to the prior art, and will not be repeated here. The heat insulation board 3 plays a good heat insulation role, and the heat of the high-temperature medium is prevented from rising into the pump head 4, thereby avoiding damage to the motor and affecting the service life. The casing 1 and the heat insulation board 3 form a good cooling and heat preservation structure, which prevents the heat of the high-temperature medium from being transmitted upward, and finally protects the shaft seal and the motor, and the shaft seal can be a mechanical seal. The first cooling jacket 6 and the second cooling jacket 7 are arranged on the upper and lower two sections of the first cooling jacket 6 and the second cooling jacket 7, which further improves the cooling and heat insulation effect, and the two-section structure greatly reduces the cost of part processing, and the upper and lower two-section sealing structure ensures smaller flow resistance, and the metal section in the middle has better heat dissipation effect, which greatly improves the cooling effect.

[0031] The casing 1 includes a barrel-shaped casing 8, a top casing 9 is fixed to the top of the barrel-shaped casing 8, an embedding groove 10 is formed at the center position of the top casing 9, and a first annular support table 11 is fixed to the top edge of the top casing 9. The barrel-shaped casing 8 and the top casing 9 are both provided with cooling cavities 2 and are connected to each other, and the casing 1 of this structure forms a wrapped cooling, which greatly improves the cooling range and cooling effect.

[0032] The heat insulation plate 3 comprises an embedded part 12 matched with the embedded groove 10, the embedded part 12 is provided with a first O-ring clamping groove 13, the first O-ring clamping groove 13 is provided with a first O-ring 14, the upper end of the embedded part 12 is fixed with a heat insulation main part 15, the bottom surface edge of the heat insulation main part 15 is provided with a first annular groove 16 matched with the first annular support table 11, the upper end center position of the heat insulation main part 15 is provided with a first cooling jacket setting groove 17 matched with the first cooling jacket 6, the embedded part 12 is provided with a second cooling jacket setting groove 18 matched with the second cooling jacket 7, wherein through the settings of the embedded groove 10 and the embedded part 12 and the first annular support table 11 and the first annular groove 16, the connection and fixation of the heat insulation plate 3 and the shell 1 are greatly facilitated compared with the conventional threaded connection mode, the installation is more convenient and efficient, the coaxial precision of part processing is easier to ensure, and the processing efficiency is higher. The setting of the first O-ring 14 plays a good sealing effect. The embedded part 12 is clamped between the shell 1 and the second cooling jacket 7, which greatly improves the cooling and heat insulation effect at the junction with the pump shaft 5.

[0033] The height of the end of the top shell 9 connected with the first annular support table 11 is higher than the height of the end connected with the embedded groove 10, through the setting, the top shell 9 is conical, which on the one hand enhances the support strength of the heat insulation plate 3 and improves the stability, and on the other hand can make the water droplets condensed on the lower surface of the top shell 9 by the cooling of the top shell 9 quickly flow from the outside to the middle, so that the water droplets on the lower surface of the top shell 9 are relatively low. The temperature of the top shell 9 returns to the high-temperature medium, which plays a certain cooling effect on the high-temperature medium, thereby improving the overall cooling effect.

[0034] The barrel-shaped shell 8 is provided with a screw plug 19 and a gas release screw plug 20, and the settings of the screw plug 19 and the gas release screw plug 20 further improve the cooling effect.

[0035] The height of the bottom surface of the heat insulation main part 15 gradually decreases from the outside to the inside, and the top surface comprises a horizontal section 21 and a raised section 22, through the setting, the heat insulation main part 15 is in a state of thick in the middle and thin at the edge, which not only improves the heat insulation effect of the pump shaft 5, but also saves materials, and is also convenient for connection and fixation.

[0036] The top surface edge of the heat insulation plate 3 is fixed with a second annular support table 23, the bottom surface edge of the pump head 4 is provided with a second annular groove 24 matched with the second annular support table 23, the second annular groove 24 is provided with a second O-ring clamping groove 25, and the second O-ring clamping groove 25 is provided with a second O-ring 26, through the setting, the connection and fixation between the pump head 4 and the heat insulation plate 3 are facilitated, and only the second O-ring 26 is needed to seal between the two, only one sealing is needed, while the conventional one needs two sealing, which reduces the risk of leakage and the cost of use and maintenance, and improves the assembly and maintenance efficiency.

[0037] The top center position of the pump head 4 is sealed with the pump shaft 5 through a mechanical seal 27, and the pump head 4 and the pump shaft 5 are sealed through the mechanical seal 27, and the sealing effect is good.

[0038] The pump head 4 is provided with an automatic exhaust device 28, the medium in the high-temperature medium cavity has a high temperature, and gas is generated during operation in the entire pressurizing system, so the automatic exhaust device 28 is arranged at the highest position of the pump head 4, so that the gas generated during pump operation can be automatically discharged, and dry wear and damage of the mechanical seal 27 are avoided.

[0039] The material of the first cooling jacket 6 and the second cooling jacket 7 is tetrafluoride propylene, the material of the first cooling jacket 6 and the second cooling jacket 7 is set to tetrafluoride propylene, so that the first cooling jacket 6 and the second cooling jacket 7 have excellent high-temperature resistance, chemical corrosion resistance, oil resistance and good compression permanent deformation performance.

[0040] Working principle: during work, air or cold water and other cooling media are circulated in the cooling cavity 2 to cool, and the cooling cavity 2 can be connected with a cooling medium circulating device, for example, the cooling cavity 2 can be connected with a cooling liquid tank through a circulating pipe, the cooling liquid in the cooling liquid tank enters the cooling cavity 2 through the circulating pipe to cool the shell 1 and then returns to the cooling liquid tank, and the cooling is repeated to cool the shell 1. The cooling method is similar to the method in the cited patent in the background art, which belongs to the prior art, and will not be described here. The heat insulation plate 3 plays a good heat insulation role, and effectively prevents the heat of the high-temperature medium from rising into the pump head 4, thereby avoiding damage to the motor and affecting the service life. The shell 1 and the heat insulation plate 3 form a good cooling and heat preservation structure, which effectively prevents the heat of the high-temperature medium from being transmitted upward, and finally protects the shaft seal and the motor. The first cooling jacket 6 and the second cooling jacket 7 are arranged in a two-segment structure, which greatly reduces the cost of part processing, the sealing structure of the two-segment structure ensures smaller flow, and the metal segment has better heat dissipation effect, which greatly improves the cooling effect.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling device for a vertical multistage pump, characterized in that, Includes a housing (1), a cooling chamber (2) is provided inside the housing (1), a heat insulation plate (3) is fixed at the upper end of the housing (1), a pump head (4) is fixed at the upper end of the heat insulation plate (3), a pump shaft (5) passes through the center of the pump head (4) and the heat insulation plate (3), and a first cooling sleeve (6) and a second cooling sleeve (7) are respectively provided at the upper and lower ends of the part of the pump shaft (5) that passes through the heat insulation plate (3).

2. The cooling device for a vertical multistage pump according to claim 1, characterized in that, The housing (1) includes a barrel-shaped housing (8), a top housing (9) is fixed to the top of the barrel-shaped housing (8), an embedding groove (10) is provided at the center of the top housing (9), and a first annular support platform (11) is fixed at the top edge of the top surface of the top housing (9).

3. A cooling device for a vertical multistage pump according to claim 2, characterized in that, The heat insulation plate (3) includes an embedding part (12) that matches the embedding groove (10). The embedding part (12) is provided with a first O-ring groove (13). A first O-ring (14) is provided in the first O-ring groove (13). A heat insulation main body (15) is fixed at the upper end of the embedding part (12). A first annular groove (16) that matches the first annular support platform (11) is provided at the bottom edge of the heat insulation main body (15). A first cooling sleeve setting groove (17) that matches the first cooling sleeve (6) is provided at the center of the upper end of the heat insulation main body (15). A second cooling sleeve setting groove (18) that matches the second cooling sleeve (7) is provided on the embedding part (12).

4. A cooling device for a vertical multistage pump according to claim 2, characterized in that, The height of the end of the top shell (9) connected to the first annular support platform (11) is higher than the height of the end connected to the embedding groove (10).

5. A cooling device for a vertical multistage pump according to claim 2, characterized in that, The barrel-shaped shell (8) is provided with a screw plug (19) and a vent screw plug (20).

6. A cooling device for a vertical multistage pump according to claim 3, characterized in that, The height of the bottom surface of the heat insulation main body (15) gradually decreases from the outside to the inside, and its top surface includes a horizontal section (21) and a raised section (22).

7. A cooling device for a vertical multistage pump according to claim 1, characterized in that, The top edge of the heat insulation plate (3) is fixed with a second annular support platform (23), and the bottom edge of the pump head (4) is provided with a second annular groove (24) that matches the second annular support platform (23). The second annular groove (24) is provided with a second O-ring slot (25), and a second O-ring (26) is provided in the second O-ring slot (25).

8. A cooling device for a vertical multistage pump according to claim 1, characterized in that, The top center of the pump head (4) is sealed to the pump shaft (5) by a mechanical seal (27).

9. A cooling device for a vertical multistage pump according to claim 1, characterized in that, The pump head (4) is equipped with an automatic exhaust device (28).

10. A cooling device for a vertical multistage pump according to claim 1, characterized in that, The first cooling jacket (6) and the second cooling jacket (7) are made of tetrapropylene fluoride.

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