High-pressure liquid oxygen pump

Abstract

The utility model relates to the technical field of liquid oxygen pumps, in particular to a high-pressure liquid oxygen pump which comprises a heat preservation box and a pump body, the heat preservation box comprises a lower box body and an upper box body, installation plates are arranged on the outer surface of the lower box body and the outer surface of the upper box body, and the lower box body and the upper box body each comprise a heat preservation shell and a low-temperature box. The low-temperature box is arranged in the heat preservation shell, a medium cavity is formed in the low-temperature box, the upper end of the lower box body and the lower end of the upper box body are each provided with a pump groove, a motor groove and a pipe groove, the motor grooves and the pipe grooves communicate with the pump grooves, the pump body is arranged between the lower box body and the upper box body, a pipeline is arranged on the pump body, and a flange plate is installed at the tail end of the pipeline. An impeller is arranged in the pump body, a driving device is installed at the side end of the pump body, and a main shaft of the driving device is connected with the axis of the impeller. The liquid oxygen pump has the advantages that the liquid oxygen pump can be cooled, heat preservation and heat insulation can be effectively carried out, and the liquid oxygen pump can operate in a low-temperature environment.

Description

Technical Field

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

[0002] Liquid oxygen pump is a cryogenic liquid pump, which is used to increase the pressure of liquid oxygen to achieve the purpose of transporting liquid oxygen. It is often used as a liquid oxygen circulation pump in the main condenser evaporator, a process liquid oxygen pump between the upper and lower towers arranged in parallel, a product liquid oxygen pump in the internal compression process, and a liquid oxygen pump for a storage tank. It can be divided into two categories: centrifugal liquid oxygen pumps and plunger liquid oxygen pumps. A pump with one impeller in the pump casing is called a single-stage pump, and a pump with multiple impellers in series in the pump casing is called a multi-stage pump.

[0003] At present, high-pressure liquid oxygen pumps need to operate in a low-temperature environment during use. Usually, thermal insulation materials are used to wrap the outer surface of the liquid oxygen pump. The wrapping operation is cumbersome and time-consuming, and the thermal insulation effect is poor. It is easy to cause temperature loss and vaporize the transported liquid oxygen, resulting in excessive pressure in the liquid oxygen pump, which is dangerous. Therefore, the utility model provides a high-pressure liquid oxygen pump. Utility Model Content

[0004] The purpose of the utility model is to provide a high-pressure liquid oxygen pump, which has the advantages of being able to cool the liquid oxygen pump and effectively perform thermal insulation, so that the liquid oxygen pump can operate in a low-temperature environment, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure liquid oxygen pump, comprising an insulation box and a pump body, the insulation box comprising a lower box and an upper box, the outer surfaces of the lower box and the upper box are both provided with mounting plates, the lower box and the upper box both comprise an insulation shell and a low-temperature box, the low-temperature box is arranged in the insulation shell, and a medium cavity is arranged in the low-temperature box, the upper end of the lower box and the lower end of the upper box are both provided with a pump groove, a motor groove and a pipe groove, and the motor groove and the pipe groove are both connected with the pump groove, the pump body is arranged between the lower box and the upper box, a pipeline is arranged on the pump body, a flange is installed at the end of the pipeline, an impeller is arranged in the pump body, a driving device is installed at the side end of the pump body, and the main shaft of the driving device is connected to the axis of the impeller.

[0006] When using the high-pressure liquid oxygen pump of the utility model,

[0007] During hydraulic transportation, its pipeline is connected to the two pipelines of the pump body through a flange. The impeller can be rotated at high speed by the driving device, and the impeller can be transported under high-speed rotation. During the liquid oxygen transportation process, cold medium can be added to the medium cavity of the upper box through the adding pipe, and the cold medium can flow into the medium cavity of the lower box through the connecting pipe. Under the action of the cold medium, the pump body and the driving equipment can be cooled to prevent their temperature from rising. At the same time, the external ambient temperature can be prevented from affecting the liquid oxygen pump under the action of the insulation box.

[0008] Preferably, a mounting hole is provided on the mounting plate, a bolt is inserted into the mounting hole, and a nut is threadedly mounted on the end of the bolt.

[0009] Preferably, a feeding pipe is installed at the front end of the upper box body, the feeding pipe is communicated with the medium cavity, and a valve is arranged on the feeding pipe.

[0010] Preferably, a discharge pipe is installed at the front end of the lower box body, the discharge pipe is communicated with the medium cavity, and a valve is provided on the discharge pipe.

[0011] Preferably, the pump body is located in a pump slot, the driving device is located in a motor slot, and the pipeline is located in a pipe slot.

[0012] Preferably, a connecting pipe communicating with the medium cavity is installed at the front end of the upper box body, and the end of the connecting pipe is communicated with the medium cavity of the lower box body.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: during the liquid oxygen transportation process, cold medium is added to the medium cavity of the upper box body through the adding pipe, and the cold medium can flow into the medium cavity of the lower box body through the connecting pipe. Under the action of the cold medium, the pump body and the driving equipment can be cooled down. At the same time, under the action of the insulation box, the external environmental temperature can be prevented from affecting the liquid oxygen pump and preventing the liquid oxygen from vaporizing. The liquid oxygen pump can be cooled down and effectively insulated, so that the liquid oxygen pump can operate stably in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 This is a front view structural schematic diagram of the utility model;

[0016] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional bottom view of the utility model.

[0018] The reference numerals and names in the figures are as follows:

[0019] 100, insulation box; 101, lower box body; 102, upper box body; 103, mounting plate; 104, adding pipe; 105, discharging pipe; 106, connecting pipe; 201, pump body; 202, driving device; 203, pipeline; 204, flange; 301, insulation shell; 302, low temperature box; 303, pump slot; 304, motor slot; 305, pipe slot; 306, medium cavity. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figures 1 to 4 The utility model provides an embodiment: a high-pressure liquid oxygen pump, comprising:

[0023] The heat preservation box 100 and the pump body 201, the heat preservation box 100 includes a lower box 101 and an upper box 102, the outer surfaces of the lower box 101 and the upper box 102 are both provided with a mounting plate 103, the lower box 101 and the upper box 102 both include a heat preservation shell 301 and a low temperature box 302, the low temperature box 302 is arranged in the heat preservation shell 301, and the low temperature box 302 is provided with a medium cavity 306, the upper end of the lower box 101 and the lower end of the upper box 102 A pump groove 303, a motor groove 304 and a pipe groove 305 are provided, and the motor groove 304 and the pipe groove 305 are both connected to the pump groove 303. The pump body 201 is arranged between the lower box body 101 and the upper box body 102. A pipeline 203 is arranged on the pump body 201. A flange 204 is installed at the end of the pipeline 203. An impeller is arranged in the pump body 201. A driving device 202 is installed at the side end of the pump body 201. The main shaft of the driving device 202 is connected to the axis of the impeller.

[0024] In this embodiment, during hydraulic transportation, its pipeline is connected to the two pipelines 203 of the pump body 201 through the flange 204, and the impeller can be rotated at high speed by the operation of the driving device 202, and the transportation can be carried out under the high-speed rotation of the impeller. During the liquid oxygen transportation process, cold medium can be added to the medium cavity 306 of the upper box body 102 through the adding pipe 104, and the cold medium can be circulated into the medium cavity 306 of the lower box body 101 through the connecting pipe 106. Under the action of the cold medium, the pump body 201 and the driving device 202 can be cooled to prevent their temperature from rising. At the same time, under the action of the insulation box 100, the external ambient temperature can be prevented from affecting the liquid oxygen pump.

[0025] Furthermore,

[0026] The mounting plate 103 is provided with a mounting hole, in which a bolt is inserted, and a nut is threadedly mounted on the end of the bolt. The mounting plate 103 is used to mount and connect the lower box body 101 and the upper box body 102.

[0027] Furthermore,

[0028] The front end of the upper box body 102 is provided with a adding pipe 104, which is connected to the medium cavity 306, and a valve is provided on the adding pipe 104. Cold medium can be added into the medium cavity 306 of the upper box body 102 through the adding pipe 104.

[0029] Furthermore,

[0030] The front end of the lower box 101 is provided with a discharge pipe 105, which is connected to the medium cavity 306 and has a valve disposed on the discharge pipe 105. The cold medium in the medium cavity 306 of the lower box 101 can be discharged through the discharge pipe 105.

[0031] Furthermore,

[0032] The pump body 201 is located in the pump groove 303, the driving device 202 is located in the motor groove 304, and the pipeline 203 is located in the pipe groove 305. The pump groove 303, the motor groove 304 and the pipe groove 305 are provided for the installation of the pump body 201.

[0033] Furthermore,

[0034] The upper box 102 is provided with a connecting pipe 106 connected to the medium cavity 306 at the front end thereof, and the end of the connecting pipe 106 is connected to the medium cavity 306 of the lower box 101. The connecting pipe 106 facilitates the cold medium in the upper box 102 to flow into the medium cavity 306 of the lower box 101.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-pressure liquid oxygen pump, comprising an insulation box (100) and a pump body (201), characterized in that: The heat preservation box (100) comprises a lower box body (101) and an upper box body (102), the outer surfaces of the lower box body (101) and the upper box body (102) are both provided with mounting plates (103), the lower box body (101) and the upper box body (102) both comprise a heat preservation shell (301) and a low temperature box (302), the low temperature box (302) is arranged in the heat preservation shell (301), and a medium cavity (306) is arranged in the low temperature box (302), and the upper end of the lower box body (101) and the lower end of the upper box body (102) are both provided with pump grooves (301). 03), a motor slot (304) and a pipe slot (305), and the motor slot (304) and the pipe slot (305) are both connected to the pump slot (303), the pump body (201) is arranged between the lower box body (101) and the upper box body (102), a pipeline (203) is arranged on the pump body (201), and a flange (204) is installed at the end of the pipeline (203), an impeller is arranged in the pump body (201), and a driving device (202) is installed at the side end of the pump body (201), and the main shaft of the driving device (202) is connected to the axis of the impeller.

2. A high-pressure liquid oxygen pump according to claim 1, characterized in that: The mounting plate (103) is provided with a mounting hole, a bolt is inserted into the mounting hole, and a nut is threadedly mounted on the end of the bolt.

3. A high-pressure liquid oxygen pump according to claim 1, characterized in that: The front end of the upper box body (102) is provided with an addition pipe (104), the addition pipe (104) is in communication with the medium chamber (306), and a valve is provided on the addition pipe (104).

4. A high-pressure liquid oxygen pump according to claim 1, characterized in that: A discharge pipe (105) is installed at the front end of the lower box body (101), the discharge pipe (105) is communicated with the medium chamber (306), and a valve is arranged on the discharge pipe (105).

5. A high-pressure liquid oxygen pump according to claim 1, characterized in that: The pump body (201) is located in a pump groove (303), the driving device (202) is located in a motor groove (304), and the pipeline (203) is located in a pipe groove (305).

6. A high-pressure liquid oxygen pump according to claim 1, characterized in that: A connecting pipe (106) communicating with the medium cavity (306) is installed at the front end of the upper box body (102), and the end of the connecting pipe (106) is connected with the medium cavity (306) of the lower box body (101).

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