CN213684558U - Vertical barrel-bag shielding electric pump connecting structure - Google Patents

Abstract

The utility model relates to a vertical barrel bag canned motor pump especially relates to a vertical barrel bag canned motor pump connection structure. This practicality can realize liquid phase medium's cooling, heat preservation, liquid level detection, sweep replacement and detect whether the material leaks. The utility model discloses a vertical barrel bag canned motor pump connection structure, including the liquid storage pot jar body, be fixed in the apron at liquid storage pot jar body top and be fixed in the canned motor pump body of liquid storage pot, be equipped with liquid phase import flange pipe and liquid phase export flange pipe on the apron, the drain pipe of canned motor pump body is connected with liquid phase export flange pipe, still includes the clamp cover that sets up in the liquid storage pot jar body outer wall; a pressure sensor in communication with the jacket; the liquid discharge flange is arranged on the cover plate; one end of the liquid discharge pipe is arranged at the bottom of the liquid storage tank body, and the other end of the liquid discharge pipe is connected with the liquid discharge flange; the pressure sensor and the shielding pump body are connected with the controller through leads.

Description

Vertical barrel-bag shielding electric pump connecting structure

Technical Field

The utility model relates to a vertical barrel bag canned motor pump especially relates to a vertical barrel bag canned motor pump connection structure.

Background

The existing canned motor pump adopts a vertical reverse circulation structure installed on the ground. When the environment temperature is higher, the backward flowing height of the material liquid level is not enough, the material is easy to vaporize in the pump cavity, and equipment failure can be caused in serious cases. Due to the strong corrosiveness of the materials, once leakage and diffusion occur, the danger of combustion, explosion and the like easily occur, and great harm is generated to personnel and environment.

Patent application No. CN201620132224.2, proposes a single-stage barrel bag shield pump, one end of a medium inlet pipe is communicated with a pump inlet on a pump body part through an inner cavity of a barrel bag, the other end of the medium inlet pipe is positioned outside the barrel bag, a medium outlet on the pump body part is connected with one end of a medium discharge pipe, and the other end of the medium discharge pipe is positioned outside the barrel bag; the junction box is communicated with the outside of the barrel bag through a pipeline. The problem of conveying media which are highly corrosive, flammable and explosive and stored in tanks is solved to a certain extent, but the problem of cooling and heat preservation of liquid-phase media cannot be solved in the actual use process of the device; liquid level detection prevents the problems of emptying materials, emptying maintenance, purging replacement and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vertical section of thick bamboo bag canned motor pump connection structure can realize cooling, heat preservation, liquid level detection, the replacement of sweeping and detecting the material of liquid phase medium and whether leak.

The utility model discloses a vertical barrel bag canned motor pump connection structure, including the liquid storage pot jar body, be fixed in the apron at liquid storage pot jar body top and be fixed in the canned motor pump body of liquid storage pot, be equipped with liquid phase import flange pipe and liquid phase export flange pipe on the apron, the drain pipe of canned motor pump body is connected with liquid phase export flange pipe, still includes the clamp cover that sets up in the liquid storage pot jar body outer wall; a pressure sensor in communication with the jacket; the liquid discharge flange is arranged on the cover plate; one end of the liquid discharge pipe is arranged at the bottom of the liquid storage tank body, and the other end of the liquid discharge pipe is connected with the liquid discharge flange; the pressure sensor and the shielding pump body are connected with the controller through leads.

The controller can be an s7-200 series PLC, and before the liquid storage tank body is filled with liquid, high-temperature nitrogen can be used for purging and replacing the liquid storage tank body from the liquid phase outlet flange pipe, so that the liquid storage tank body and the shielding pump body are ensured to have no water. The jacket can be used for cooling and heat preservation of the medium, and the pressure sensor is used for detecting the pressure in the jacket so as to judge whether the reaction medium leaks or not. When the equipment is maintained and overhauled, dry nitrogen can be injected through the liquid phase outlet flange pipe to discharge the residual medium from the liquid discharge flange through the liquid discharge pipe.

Preferably, the liquid level meter also comprises a high-frequency radar liquid level meter fixed on the cover plate, and the high-frequency radar liquid level meter is connected with the controller through a lead.

The high-frequency radar liquid level meter is used for detecting the liquid level in the liquid storage tank body, and prevents that the shield pump body from continuing to work when the liquid level is too low, so that the materials are emptied.

Preferably, the gas-phase balance device further comprises a gas-phase balance flange arranged on the cover plate, and the bottom of the gas-phase balance flange is communicated with the liquid storage tank body. The gas phase balance flange is used for balancing the pressure inside and outside the liquid storage tank body and preventing the pressure inside the liquid storage tank body from being abnormal.

The utility model has the advantages that: the jacket can be used for cooling and heat preservation of media; the pressure sensor can be used for detecting the pressure in the jacket, so that whether the reaction medium leaks or not; when the equipment is maintained and overhauled, dry nitrogen is injected into the flange pipe through the liquid phase outlet to discharge the residual medium from the liquid discharge flange through the liquid discharge pipe, so that the equipment is convenient to overhaul.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a top view of FIG. 1;

in the figure: 1. a tank body of the liquid storage tank; 2. a cover plate; 3. a canned motor pump body; 4. a liquid phase inlet flange pipe; 5. a liquid phase outlet flange pipe; 6. a jacket; 7. a pressure sensor; 8. a drain flange; 9. a liquid discharge pipe; 10. a high frequency radar level gauge; 11. a gas phase balance flange; 12. and (4) a cable outlet pipe.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, the vertical tube-bag canned motor pump connection structure of the present invention includes a liquid storage tank 1, a cover plate 2 fixed on the top of the liquid storage tank 1, and a canned motor pump body 3 fixed in the liquid storage tank 1, wherein the cover plate 2 is provided with a liquid phase inlet flange pipe 4 and a liquid phase outlet flange pipe 5, the liquid outlet pipe of the canned motor pump body 3 is connected with the liquid phase outlet flange pipe 5, and the vertical tube-bag canned motor pump connection structure further includes a jacket 6 arranged on the outer wall of the liquid storage tank 1; a pressure sensor 7 communicating with the jacket 6; a liquid discharge flange 8 arranged on the cover plate 2; a liquid discharge pipe 9 with one end arranged at the bottom of the liquid storage tank body 1 and the other end connected with a liquid discharge flange 8; the pressure sensor 7 and the shield pump body 3 are both connected with a controller through leads, a high-frequency radar liquid level meter 10 and a gas phase balance flange 11 are arranged on the fixed cover plate 2, and the high-frequency radar liquid level meter 10 is connected with the controller through leads; the bottom of the gas phase balance flange 11 is communicated with the liquid storage tank body 1. The equipment connecting wire is communicated with the external connection through the cable outlet pipe.

In the embodiment, the controller adopts an s7-200 series PLC, and before the liquid injection of the liquid storage tank body 1, high-temperature nitrogen can be used for purging and replacement from the liquid phase outlet flange pipe 5, so that the existence of no moisture in the liquid storage tank body 1 and the shield pump body 3 is ensured. The jacket 6 can be used for cooling and heat preservation of the medium, and the pressure sensor 7 is used for detecting the pressure in the jacket 6, so that whether the reaction medium leaks or not. When the equipment is maintained and overhauled, dry nitrogen can be injected through the liquid phase outlet flange pipe 5 to discharge residual media from the liquid discharge flange 8 through the liquid discharge pipe 9. The high-frequency radar liquid level meter 10 is used for detecting the liquid level in the liquid storage tank body 1, and prevents the shielding pump body 3 from continuously working when the liquid level is too low, so that the materials are emptied. The gas phase balance flange 11 is used for balancing the pressure inside and outside the liquid storage tank body 1 and preventing the pressure inside the liquid storage tank body 1 from being abnormal.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims (3)

1. The utility model provides a vertical section of thick bamboo bag canned motor pump connection structure, includes the liquid storage pot jar body (1), is fixed in apron (2) at the liquid storage pot jar body (1) top and is fixed in canned motor pump body (3) in the liquid storage pot jar body (1), be equipped with liquid phase import flange pipe (4) and liquid phase export flange pipe (5) on apron (2), the drain pipe and the liquid phase export flange pipe (5) of canned motor pump body (3) are connected, and its characterized in that still includes:

a jacket (6) arranged on the outer wall of the liquid storage tank body (1);

a pressure sensor (7) in communication with the jacket (6);

a liquid discharge flange (8) arranged on the cover plate (2);

and a liquid discharge pipe (9) with one end arranged at the bottom of the liquid storage tank body (1) and the other end connected with a liquid discharge flange (8);

the pressure sensor (7) and the shielding pump body (3) are connected with the controller through leads.

2. The vertical cartridge bag canned motor pump connection structure of claim 1, wherein: the liquid level meter is characterized by further comprising a high-frequency radar liquid level meter (10) fixed on the cover plate (2), wherein the high-frequency radar liquid level meter (10) is connected with the controller through a lead.

3. The vertical cartridge bag canned motor pump connection structure of claim 1 or 2, wherein: the gas phase balance device is characterized by further comprising a gas phase balance flange (11) arranged on the cover plate (2), and the bottom of the gas phase balance flange (11) is communicated with the liquid storage tank body (1).

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