Novel low-temperature liquid pump self-sealing device

Abstract

The utility model discloses a novel low-temperature liquid pump self-sealing device, and particularly relates to the field of air separation, the novel low-temperature liquid pump self-sealing device comprises a base, a side shell and a sealing box are fixedly installed on the upper end face of the base, and a sealing gas generator and a gas temperature regulator are fixedly installed in the side shell; the gas outlet end of the sealing gas generator is fixedly communicated with the gas inlet end of the gas temperature regulator through a connecting pipe, the gas outlet end of the gas temperature regulator is fixedly communicated with a gas outlet pipe, and the other end of the gas outlet pipe penetrates through the side end of the sealing box and the side end of the sealing box and extends into the sealing box. The low-temperature liquid pump can be sealed through the sealing gas, and the temperature of the sealing gas can be adjusted, so that the sealing gas is more suitable for being used by the low-temperature liquid pump, the service life of the low-temperature liquid pump is prevented from being influenced by high temperature of the low-temperature liquid pump due to over-high temperature of the sealing gas, and the service life of the low-temperature liquid pump is prevented from being influenced due to over-low temperature of the sealing gas. And the cryogenic liquid pump is easy to frostbite.

Description

Technical Field

[0001] The utility model relates to the field of air separation, in particular to a novel low-temperature liquid pump self-sealing device. Background Art

[0002] The most common method of transporting liquid argon products in the air separation industry is to pressurize the liquid argon storage tank through a filling liquid argon pump and then transport it to the customer's tank truck. The filling liquid argon pump adopts a mechanical seal, and a certain pressure and oil-free gas is used as the sealing gas of the operating equipment on the liquid argon pump. In order to ensure the safe operation of the liquid argon pump, dry and water-free sealing gas must be ensured in the operating equipment to isolate the compressed component liquid argon from leaking out, so as to prevent the leakage of liquid argon from freezing the equipment and frostbiting personnel.

[0003] The current measure taken in China is to use instrument air with a certain pressure on the air separation equipment as the sealing gas of the liquid argon pump to isolate the liquid argon in the equipment from leaking out. However, the existing technology has the following problems:

[0004] The temperature of the sealing gas cannot be adjusted. However, if the sealing gas temperature is too high, it will easily cause the cryogenic liquid pump to be overheated, thus affecting its service life. If the sealing gas temperature is too low, it will easily freeze the cryogenic liquid pump.

[0005] Therefore, we made improvements to this and proposed a new type of self-sealing device for cryogenic liquid pumps. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model discloses a novel self-sealing device for a low-temperature liquid pump, comprising a base, wherein a side shell and a sealing box are fixedly installed on the upper end surface of the base, and a sealing gas generating machine and a gas temperature regulator are fixedly installed inside the side shell, and an air outlet end of the sealing gas generating machine is fixedly connected with an air inlet end of the gas temperature regulator through a connecting pipe, and an air outlet end of the gas temperature regulator is fixedly connected with an air outlet pipe, and the other end of the air outlet pipe passes through a side end of the sealing box and a side end of the sealing box, and extends to the inside of the sealing box.

[0008] As a preferred technical solution of the utility model, a cryogenic liquid pump is arranged inside the sealed box, and a liquid inlet end of the cryogenic liquid pump is fixedly connected to a liquid inlet pipe, and the other end of the liquid inlet pipe runs through the front end of the sealed box and extends to the front side of the sealed box;

[0009] The liquid outlet end of the cryogenic liquid pump is fixedly connected with a liquid outlet pipe, and the other end of the liquid outlet pipe runs through the rear end of the sealing box and extends to the rear side of the sealing box;

[0010] Sealing rubber rings are provided at the connection points between the liquid outlet pipe and the liquid inlet pipe and the sealing box.

[0011] As a preferred technical solution of the utility model, a sealed gas concentration measuring device and a barometer are fixedly installed on the upper end of the sealed box. The lower ends of the sealed gas concentration measuring device and the barometer detection end penetrate the upper end of the sealed box and extend into the interior of the sealed box.

[0012] As a preferred technical solution of the present utility model, a power box is fixedly arranged inside the base.

[0013] As a preferred technical solution of the utility model, the front end of the sealing box is fixedly connected to an exhaust pipe, and a switch valve is installed on the exhaust pipe.

[0014] As a preferred technical solution of the utility model, the sealing gas concentration measuring device, the barometer, the sealing gas generating machine and the gas temperature regulator are all electrically connected to the power box.

[0015] The beneficial effects of the utility model are as follows: the novel low-temperature liquid pump self-sealing device can start a sealing gas generating machine and a gas temperature regulator, the sealing gas generating machine can generate sealing gas, the sealing gas can enter the gas temperature regulator through the connecting pipe, the gas temperature regulator can adjust the sealing gas temperature, after adjusting it to a suitable temperature, it can be poured into the sealing box through the air outlet pipe, and then the sealing box can be detected by a sealing gas concentration measuring device and a barometer, and when the sealing gas concentration in the seal reaches a suitable concentration, the sealing gas concentration measuring device can be closed.

[0016] The utility model can seal the cryogenic liquid pump by means of sealing gas, and can adjust the temperature of the sealing gas to make it more suitable for the use of the cryogenic liquid pump, thereby preventing the sealing gas temperature from being too high, which may easily lead to high temperature of the cryogenic liquid pump and thus affect its service life, and preventing the sealing gas temperature from being too low, which may easily cause frostbite to the cryogenic liquid pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a front structural diagram of a novel self-sealing device for a cryogenic liquid pump of the utility model;

[0019] Figure 2 This is a schematic diagram of the rear structure of a novel self-sealing device for a cryogenic liquid pump of the utility model;

[0020] Figure 3 The utility model is a partial structural sectional view of a novel self-sealing device for a cryogenic liquid pump.

[0021] In the figure: 1. base; 2. side shell; 3. air outlet pipe; 4. sealed gas concentration measuring device; 5. barometer; 6. sealing box; 7. switch valve; 8. exhaust pipe; 9. liquid inlet pipe; 10. sealing rubber ring; 11. liquid outlet pipe; 12. sealed gas generating machine; 13. gas temperature regulator; 14. connecting pipe; 15. power box. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1-3 As shown, the utility model is a novel low-temperature liquid pump self-sealing device, including a base 1, a side shell 2 and a sealing box 6 are fixedly installed on the upper end surface of the base 1, and a sealing gas generator 12 and a gas temperature regulator 13 are fixedly installed inside the side shell 2, and the air outlet end of the sealing gas generator 12 is fixedly connected with the air inlet end of the gas temperature regulator 13 through a connecting pipe 14, and the air outlet end of the gas temperature regulator 13 is fixedly connected with an air outlet pipe 3, and the other end of the air outlet pipe 3 passes through the side end of the sealing box 6 and the side end of the sealing box 6, and extends to the inside of the sealing box 6.

[0024] In this embodiment, Figure 3 As shown, a cryogenic liquid pump is provided inside the sealed box 6, and the liquid inlet end of the cryogenic liquid pump is fixedly connected with a liquid inlet pipe 9, and the other end of the liquid inlet pipe 9 passes through the front end of the sealed box 6 and extends to the front side of the sealed box 6;

[0025] like Figure 1-2 As shown, the liquid outlet end of the cryogenic liquid pump is fixedly connected with a liquid outlet pipe 11, and the other end of the liquid outlet pipe 11 passes through the rear end of the sealed box 6 and extends to the rear side of the sealed box 6;

[0026] Sealing rubber rings 10 are provided at the connection points between the liquid outlet pipe 11 and the liquid inlet pipe 9 and the sealing box 6 .

[0027] By providing the sealing rubber ring 10 , the sealing performance between the liquid outlet pipe 11 and the liquid inlet pipe 9 and the sealing box 6 can be improved.

[0028] A sealed gas concentration measuring device 4 and a barometer 5 are fixedly mounted on the upper end of the sealed box 6 . The lower ends of the detection ends of the sealed gas concentration measuring device 4 and the barometer 5 penetrate through the upper end of the sealed box 6 and extend into the interior of the sealed box 6 .

[0029] The sealed gas concentration measuring device 4 can measure and display the sealed gas concentration in the sealed box 6;

[0030] The air pressure in the sealed box 6 can be measured and displayed by the barometer 5. If the air pressure in the sealed box 6 fluctuates after the sealing gas is introduced, it means that the sealed box 6 is leaking and maintenance is required.

[0031] like Figure 3 As shown, a power supply box 15 is fixedly arranged inside the base 1.

[0032] like Figure 1 As shown, the front end of the sealed box 6 is fixedly connected with an exhaust pipe 8, and a switch valve 7 is installed on the exhaust pipe 8. When the switch valve 7 is opened, the gas in the sealed box 6 can be discharged through the exhaust pipe 8.

[0033] The sealing gas concentration measuring device 4 , the barometer 5 , the sealing gas generating machine 12 and the gas temperature regulator 13 are all electrically connected to the power supply box 15 .

[0034] The sealing gas concentration measuring device 4 , the barometer 5 , the sealing gas generating device 12 and the gas temperature regulator 13 can be powered by the power supply box 15 .

[0035] When working, the sealing gas generator 12 and the gas temperature regulator 13 can be started, the sealing gas generator 12 can generate sealing gas, the sealing gas can enter the gas temperature regulator 13 through the connecting pipe 14, the gas temperature regulator 13 can adjust the sealing gas temperature, after adjusting it to a suitable temperature, it can be poured into the sealing box 6 through the gas outlet pipe 3, and then the sealing box 6 can be tested through the sealing gas concentration measuring device 4 and the barometer 5. When the sealing gas concentration in the sealing box reaches a suitable concentration, the sealing gas concentration measuring device 4 can be closed;

[0036] The sealing gas, the sealing gas generating machine 12, the gas temperature regulator 13 and the sealing gas concentration measuring device 4 in the present invention are all prior art, and their specific structures and working principles are not described in detail.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel self-sealing device for a cryogenic liquid pump, characterized in that: The invention comprises a base (1), wherein a side shell (2) and a sealed box (6) are fixedly mounted on the upper end surface of the base (1), and a sealed gas generator (12) and a gas temperature regulator (13) are fixedly mounted inside the side shell (2), and the gas outlet end of the sealed gas generator (12) is fixedly connected to the gas inlet end of the gas temperature regulator (13) through a connecting pipe (14), and the gas outlet end of the gas temperature regulator (13) is fixedly connected to an outlet pipe (3), and the other end of the outlet pipe (3) passes through the side end of the sealed box (6) and the side end of the sealed box (6), and extends to the inside of the sealed box (6).

2. A novel cryogenic liquid pump self-sealing device according to claim 1, characterized in that: A cryogenic liquid pump is arranged inside the sealed box (6), and a liquid inlet end of the cryogenic liquid pump is fixedly connected to a liquid inlet pipe (9), the other end of the liquid inlet pipe (9) passes through the front end of the sealed box (6) and extends to the front side of the sealed box (6); The liquid outlet end of the cryogenic liquid pump is fixedly connected to a liquid outlet pipe (11), and the other end of the liquid outlet pipe (11) passes through the rear end of the sealing box (6) and extends to the rear side of the sealing box (6); Sealing rubber rings (10) are provided at the connection points between the liquid outlet pipe (11) and the liquid inlet pipe (9) and the sealing box (6).

3. A novel cryogenic liquid pump self-sealing device according to claim 2, characterized in that: A sealed gas concentration measuring device (4) and a barometer (5) are fixedly mounted on the upper end of the sealed box (6); the lower ends of the detection ends of the sealed gas concentration measuring device (4) and the barometer (5) penetrate through the upper end of the sealed box (6) and extend into the interior of the sealed box (6).

4. A novel cryogenic liquid pump self-sealing device according to claim 3, characterized in that: A power supply box (15) is fixedly arranged inside the base (1).

5. A novel cryogenic liquid pump self-sealing device according to claim 4, characterized in that: The front end of the sealing box (6) is fixedly connected to an exhaust pipe (8), and a switch valve (7) is installed on the exhaust pipe (8).

6. A novel cryogenic liquid pump self-sealing device according to claim 5, characterized in that: The sealing gas concentration measuring device (4), the barometer (5), the sealing gas generating machine (12) and the gas temperature regulator (13) are all electrically connected to the power supply box (15).

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