High-pressure anti-explosion submersible pump

Abstract

The high-pressure anti-explosion submersible pump comprises an outer protective shell, end covers are installed at the front end and the rear end of the outer protective shell in a sealed mode respectively, the area, close to the front end, of the interior of the outer protective shell is a cold air chamber, the area, located at the rear end, of the interior of the outer protective shell is an installation chamber, the installation chamber is communicated with the cold air chamber, and an anti-explosion motor is coaxially installed in the installation chamber. The output end of the explosion-proof motor is provided with a rotating shaft penetrating through the front end cover, the explosion-proof motor is sleeved with a heat conduction silica gel ring, the heat conduction silica gel ring is sleeved with an annular heat conduction plate in an attached mode, and the outer side of the annular heat conduction plate is provided with heat dissipation fins which are evenly distributed. A plurality of refrigeration parts are arranged on the circle of the outer protective shell body and located at the position of the cold air chamber, the cold air chamber and the installation chamber are separated in a semi-closed mode through the partition plate, obvious cold and hot isolation is formed in the two cabins, meanwhile, the rotating fan blades can blow cold air to the installation chamber in a concentrated mode, and therefore the cooling efficiency of the installation chamber is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a high-pressure explosion-proof submersible pump. Background Art

[0002] At present, when drainage operations are carried out in some flammable and explosive places, on the one hand, there are strict requirements for the insulation of the submersible pump motor, and on the other hand, there are strict requirements for the sealing of the submersible pump motor. Since the water body often contains a large amount of hard particles such as sediment and metal particles, and there are also some acidic or alkaline substances, it will also have a serious corrosive effect on the submersible pump housing and pipelines, thereby greatly shortening the service life of the submersible pump seal. The current submersible pumps mainly increase the number and volume of seals to delay erosion or corrosion and increase the service life of submersible pumps and motors. However, the effect of this approach still cannot effectively meet the needs of safe use. At the same time, due to the increase in the number and volume of seals, the submersible pump has the disadvantages of poor heat dissipation and small effective stroke and flow, which cannot meet the needs of actual use.

[0003] Chinese patent CN204357722U discloses a high-pressure airtight explosion-proof submersible pump, which effectively isolates and seals the submersible pump drive motor from the water body by utilizing external high-pressure gas pressure. On the one hand, it avoids the erosion of the motor by the water body and the debris in the water body, and on the other hand, it also enhances the heat dissipation effect of the motor, thereby achieving the purpose of improving the operating stability of the motor and extending the service life of the motor.

[0004] The above-mentioned device and technical solution still have some shortcomings: since the heat sink inside the airtight cavity is not in direct contact with the casing of the motor, the heat exchange efficiency between the two is low, and it is difficult for the motor running at high load to dissipate the heat in a timely and effective manner; at the same time, it realizes heat dissipation by setting up separate air inlets and outlets, and cooperating with remotely arranged air ducts and high-pressure air sources, which makes the entire heat dissipation mechanism have the disadvantages of structural redundancy and high use and maintenance costs, and the more connected air ports there are, the greater the probability of leakage, and its practicality needs to be improved. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] Therefore, the purpose of the present invention is to provide a high-pressure explosion-proof submersible pump to solve the problems of poor heat dissipation efficiency, structural redundancy, and high use and maintenance costs of the existing explosion-proof submersible pumps mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure explosion-proof submersible pump, which includes an outer protective shell, the front end and the rear end of the outer protective shell are respectively sealed with end covers, the interior of the outer protective shell near the front end area is a cold air chamber and the rear end area is an installation chamber, the installation chamber and the cold air chamber are connected to each other, an explosion-proof motor is coaxially installed inside the installation chamber, the output end of the explosion-proof motor has a rotating shaft running through the front end end cover, a thermal conductive silicone ring is sleeved around the outside of the explosion-proof motor, an annular heat conducting plate is fitted around the outside of the thermal conductive silicone ring, and the outer side of the annular heat conducting plate has uniformly distributed heat dissipating fins, a plurality of refrigeration components are arranged around the outer protective shell and located in the cold air chamber, fan blades are fixed inside the cold air chamber and located on the outside of the rotating shaft, and the cold air in the cold air chamber is blown into the installation chamber by the rotating fan blades.

[0008] As a preferred solution of the high-pressure explosion-proof submersible pump described in the utility model, there is a partition fixed to the inner side of the outer casing between the cold air chamber and the installation chamber, and a plurality of evenly distributed ventilation holes are opened in a radial circle of the partition.

[0009] As a preferred solution of the high-pressure explosion-proof submersible pump described in the utility model, the annular heat conducting plate and the heat dissipating fins are made of graphene material, and the heat dissipating fins are arranged in series along the length direction of the annular heat conducting plate.

[0010] As a preferred solution of the high-pressure explosion-proof submersible pump described in the utility model, the refrigeration component is a semiconductor refrigeration sheet;

[0011] Wherein, the heat dissipation surface of the semiconductor refrigeration plate is located outside the outer protective shell and the cooling surface faces the cold air chamber.

[0012] As a preferred solution of a high-pressure explosion-proof submersible pump described in the utility model, a connecting sleeve body fixedly installed with the end cover is arranged at the front end of the outer casing, a pump body is arranged at the outer end of the connecting sleeve body, and a blade drive shaft connected to the rotating shaft is arranged at the axis center of the pump body.

[0013] As a preferred solution of the high-pressure explosion-proof submersible pump described in the utility model, the rear end of the outer protective shell has a pressure relief port arranged on the end cover, and the outer end of the pressure relief port is provided with a one-way pressure relief valve.

[0014] Compared with the prior art, the beneficial effect of the utility model is as follows: when it is necessary to cool down the running explosion-proof motor of this high-pressure explosion-proof submersible pump, the refrigeration component can continuously input cold air into the cold air chamber, and at the same time, the rotating shaft can drive the fan blades to rotate rapidly, and use the wind force of the fan blades to continuously blow cold air into the installation room, thereby cooling the motor. At the same time, the annular heat conduction plate can quickly absorb the heat generated by the operation of the motor through the thermal conductive silicone ring and disperse it on the densely distributed cooling fins. The continuously blown cold air can take away and cool the heat on the cooling fins in time, thereby greatly improving the heat exchange efficiency between the two. In summary, the high-pressure explosion-proof submersible pump has a simple structure, low cost, ingenious and reasonable design, and at the same time has the characteristics of high heat exchange efficiency and good heat dissipation effect, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the outer protective shell of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the annular heat conducting plate of the utility model.

[0018] In the figure: 10, outer shell; 101, end cover; 101a, pressure relief port; 102, partition; 102a, ventilation hole; 103, cold air chamber; 140, installation chamber; 20, explosion-proof motor; 201, rotating shaft; 30, thermal conductive silicone ring; 301, annular heat conductive plate; 302, cooling fins; 40, refrigeration component; 50, fan blades; 60, connecting sleeve; 70, pump body; 701, blade drive shaft; 80, one-way pressure relief valve. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0020] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0021] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Figure 1-Figure 3The following is a schematic diagram of the entire structure of a high-pressure explosion-proof submersible pump of the utility model. Figure 1-Figure 3 A high-pressure explosion-proof submersible pump in this embodiment includes an outer protective shell 10, and end covers 101 are respectively installed at the front and rear ends of the outer protective shell 10 in a sealed manner. The inner area of ​​the outer protective shell 10 near the front end is a cold air chamber 103, and the inner area of ​​the outer protective shell 10 near the rear end is an installation chamber 140. The installation chamber 140 and the cold air chamber 103 are connected to each other. An explosion-proof motor 20 is coaxially installed inside the installation chamber 140. The output end of the explosion-proof motor 20 has a rotating shaft 201 that penetrates the front end cover 101. The explosion-proof motor 20 0 is sleeved around the outer side of the heat-conducting silicone ring 30, and a ring-shaped heat-conducting plate 301 is fitted around the outer side of the heat-conducting silicone ring 30. The outer side of the ring-shaped heat-conducting plate 301 has evenly distributed heat dissipation fins 302. A plurality of refrigeration components 40 are arranged around the outer shell 10 and located at the position of the cold air chamber 103. Fan blades 50 are fixed inside the cold air chamber 103 and around the outer side of the rotating shaft 201. The cold air in the cold air chamber 103 is blown into the installation chamber 140 through the rotating fan blades 50.

[0023] There is also a partition 102 fixed to the inner side of the outer protective shell 10 between the cold air chamber 103 and the installation chamber 140. A plurality of evenly distributed ventilation holes 102a are provided in a radial circle of the partition 102. The cold air chamber 103 and the installation chamber 140 are semi-enclosed and separated by the partition 102, so that the two chambers form an obvious cold and heat isolation. At the same time, the rotating fan blades 50 can blow the cold air to the installation chamber 140, thereby improving the cooling efficiency of the installation chamber 140.

[0024] Furthermore, the annular heat conducting plate 301 and the heat dissipating fins 302 are made of graphene material, and the heat dissipating fins 302 are arranged in a row along the length direction of the annular heat conducting plate 301. Here, the annular heat conducting plate 301 made of graphene material has excellent heat conduction and heat exchange efficiency, which can quickly absorb the heat on the thermal silicone ring 30 and the motor, and dissipate it in time through the heat dissipating fins 302, and the heat dissipating fins 302 arranged in sequence can quickly dissipate heat under the action of wind.

[0025] It can be understood that the heat-conducting silicone ring 30 is provided so that the annular heat-conducting plate 301 and the explosion-proof motor 20 can be in close contact with each other, so that the heat exchange efficiency is greatly improved, which is conducive to the efficient dissipation of heat.

[0026] Furthermore, the refrigeration component 40 is a semiconductor refrigeration plate; wherein, the heat dissipation surface of the semiconductor refrigeration plate is located outside the outer protective shell 10 and the refrigeration surface faces the cold air chamber 103. Here, the semiconductor refrigeration plate used has the characteristics of outstanding refrigeration efficiency, simple structure, low power consumption and low use cost, and is suitable for the refrigeration component in this embodiment; and, the heat dissipation surface of the refrigeration plate is located outside the outer protective shell 10, so that natural water can efficiently cool the side of the refrigeration plate that needs to dissipate heat, thereby improving the service life of the refrigeration plate, which is simple and reasonable; it can be understood that the number and module size of the refrigeration component 40 can be set according to actual needs.

[0027] Furthermore, a connecting sleeve 60 fixedly mounted with the end cover 101 is provided at the front end of the outer protective shell 10, and a pump body 70 is provided at the outer end of the connecting sleeve 60. The pump body 70 has a blade drive shaft 701 connected to the rotating shaft 201 at the axis center. Here, the connecting sleeve 60 is a hollow structure. In this way, when the rotating shaft 201 drives the blade drive shaft 701 to rotate, water can be attracted into the pump body 70 through the hollow structure and discharged through the other end of the pump. This is a common technical means in this field of knowledge and will not be described in detail; in addition, a sealing shaft matching the rotating shaft 201 is also provided in the middle part of the end cover 101 to prevent water from entering the interior of the outer protective shell 10.

[0028] Furthermore, the rear end of the outer protective shell 10 has a pressure relief port 101a arranged on the end cover 101, and a one-way pressure relief valve 80 is arranged at the outer end of the pressure relief port 101a. In order to prevent the adverse effects caused by a sharp increase in the internal temperature of the shell in the event of a failure of the equipment, the heat of internal expansion can be naturally dissipated and released through the pressure relief port 101a and the one-way pressure relief valve 80.

[0029] In summary, in a high-pressure explosion-proof submersible pump of the present embodiment, when it is necessary to cool the running explosion-proof motor 20, the refrigeration component 40 can continuously input cold air into the cold air chamber 103, and at the same time, the rotating shaft 201 can drive the fan blades 50 to rotate rapidly, and use the wind force of the fan blades 50 to continuously blow cold air into the installation chamber 140, thereby cooling the motor. At the same time, the annular heat conduction plate 301 can quickly absorb the heat generated by the operation of the motor through the thermal conductive silicone ring 30 and disperse it on the densely distributed cooling fins 302, and the continuously blown cold air can promptly take away and cool the heat on the cooling fins 302, thereby greatly improving the heat exchange efficiency between the two.

[0030] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-pressure explosion-proof submersible pump, characterized in that: The invention comprises an outer protective shell (10), the front end and the rear end of the outer protective shell (10) are respectively sealed with end covers (101), the interior of the outer protective shell (10) near the front end is a cold air chamber (103) and the rear end is an installation chamber (140), the installation chamber (140) and the cold air chamber (103) are communicated with each other, an explosion-proof motor (20) is coaxially installed inside the installation chamber (140), the output end of the explosion-proof motor (20) has a rotating shaft (201) penetrating the front end cover (101), and the outer side of the explosion-proof motor (20) is provided with a guide sleeve A thermal silicone ring (30), wherein an annular heat conducting plate (301) is fitted around the outer side of the thermal silicone ring (30), and the annular heat conducting plate (301) has evenly distributed heat dissipation fins (302) around the outer side of the annular heat conducting plate (301), a plurality of refrigeration components (40) are arranged around the outer shell of the outer protective shell (10) and located in the cold air chamber (103), and fan blades (50) are fixed inside the cold air chamber (103) and located on the outer side of the rotating shaft (201), and the cold air in the cold air chamber (103) is blown into the installation chamber (140) through the rotating fan blades (50).

2. A high-pressure explosion-proof submersible pump according to claim 1, characterized in that: A partition plate (102) fixed to the inner side of the outer protective shell (10) is provided between the cold air chamber (103) and the installation chamber (140), and a plurality of evenly distributed ventilation holes (102a) are provided in a radial circle of the partition plate (102).

3. A high-pressure explosion-proof submersible pump according to claim 1, characterized in that: The annular heat conducting plate (301) and the heat dissipation fins (302) are made of graphene material, and the heat dissipation fins (302) are arranged in series along the length direction of the annular heat conducting plate (301).

4. A high-pressure explosion-proof submersible pump according to claim 1, characterized in that: The refrigeration component (40) is a semiconductor refrigeration sheet; The heat dissipation surface of the semiconductor refrigeration plate is located outside the outer protective shell (10) and the refrigeration surface faces the cold air chamber (103).

5. A high-pressure explosion-proof submersible pump according to claim 1, characterized in that: The front end of the outer casing (10) is provided with a connecting sleeve (60) fixedly mounted to the end cover (101), the outer end of the connecting sleeve (60) is provided with a pump body (70), and the pump body (70) has a blade drive shaft (701) connected to the rotating shaft (201) at its axis.

6. A high-pressure explosion-proof submersible pump according to claim 1, characterized in that: The rear end of the outer protective shell (10) is provided with a pressure relief port (101a) arranged on the end cover (101), and a one-way pressure relief valve (80) is arranged at the outer end of the pressure relief port (101a).

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