CN213298386U

CN213298386U - Horizontal split pump and medium leakage collecting system

Info

Publication number: CN213298386U
Application number: CN202022144039.4U
Authority: CN
Inventors: 黄铭科
Original assignee: Shenhua Engineering Technology Co ltd; China Shenhua Coal to Liquid Chemical Co Ltd
Current assignee: Shenhua Engineering Technology Co ltd; China Shenhua Coal to Liquid Chemical Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-05-28
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses a horizontal split pump and a medium leakage collecting system, wherein the horizontal split pump comprises a pump body (110) and a pump cover (120); the pump body (110) has a first bisecting surface (111); the pump cover (120) is provided with a second midsplit surface (121) which is in fit contact with the first midsplit surface (111); the first (111) and/or the second (121) midsplit surface is/are provided with a groove structure for accommodating a fluid medium. The utility model discloses a split often takes place the difficult problem of revealing in the superhigh pressure operating mode that open pump can solve prior art existence in the level, and open pump operating cycle under harsh operating mode such as high temperature high pressure in the extension level.

Description

Horizontal split pump and medium leakage collecting system

Technical Field

The utility model relates to a centrifugal pump technical field specifically relates to a collection system is revealed to horizontal split pump and medium.

Background

The centrifugal pump is used as power equipment of petrochemical equipment and is the heart of the technological process. The phenomenon of 'leakage, overflow and drip' caused by the leakage of the seal of the centrifugal pump occurs sometimes, even safety accidents are caused; especially for high-temperature and high-pressure centrifugal pumps, the sealing is also a key difficulty.

The horizontal split pump belongs to a centrifugal pump, adopts a two-end supporting structure, is stable in operation and convenient to maintain, and is widely applied to the petrochemical industry. The pump body is connected with the pump cover through a bolt, and the pump cover is horizontally split into structures; the pressure-bearing median plane is formed at the joint between the pump body and the pump cover, leakage faults often occur to the median plane in practical engineering, loss and potential safety hazards are brought to production, and particularly for high-temperature and high-pressure fluid media, the good sealing performance of the median plane is an important guarantee for safe and reliable operation of pump equipment.

The sealing of the bisection surface of the horizontal split pump belongs to static sealing, the processing precision of the metal sealing surfaces of the pump body and the pump cover has important influence on the sealing performance, and the ideal situation is that metal and metal are matched between the pump body and the pump cover to achieve complete fitting, but in practical engineering, a sealing gasket is often placed between the pump body and the pump cover to improve the sealing performance so as to compensate the defect of the processing precision. The sealing gasket is pressed in the bearing high pressure, and belongs to a wearing part. The size and material of the sealing gasket also have important influence on the sealing performance of the split surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that prior art exists, provide a collection system is revealed to horizontal split pump and medium, and split often takes place the difficult problem of revealing under the superhigh pressure operating mode that this horizontal split pump can solve prior art existence, prolongs the operating cycle of horizontal split pump under harsh operating mode such as high temperature high pressure.

In order to achieve the above object, the present invention provides a horizontal split pump, which comprises a pump body and a pump cover; the pump body has a first midsplit surface; the pump cover is provided with a second halving surface which is matched and contacted with the first halving surface; the first midsplit surface and/or the second midsplit surface are provided with a groove structure for accommodating a fluid medium.

Optionally, the groove structure is arranged to extend along a circumferential direction of the first median surface and/or the second median surface.

Optionally, the groove structure includes a first groove and a second groove, and the first groove and the second groove are arranged at intervals along a radial direction of the horizontal split pump.

Optionally, the first groove and/or the second groove are labyrinth-type structures.

Optionally, a groove wall and a groove bottom of the first groove and/or the second groove are in smooth transition.

Optionally, the first groove is arranged outside the second groove along the radial direction of the horizontal split pump, and an unloading channel communicated with the outside is arranged at one axial end of the first groove along the horizontal split pump.

Optionally, the groove bottom of the first groove is provided with an inclined surface to guide the fluid medium to flow to the unloading channel.

According to the technical scheme, the groove structures used for containing the fluid medium are arranged on the first middle dividing surface and/or the second middle dividing surface, so that resistance is generated when the fluid medium passes through the groove structures and a part of the fluid medium is contained, the flow of the fluid medium is reduced, the leakage is reduced, and the running period of the horizontal middle-opening pump under the harsh working conditions of high temperature, high pressure and the like is prolonged.

The utility model also provides a medium leakage collecting system, which comprises a medium collecting tank and the horizontal split pump; the groove structure of the horizontal split pump is provided with an unloading runner; and a medium inlet of the medium collecting tank is communicated with the unloading flow channel, and a medium outlet of the medium collecting tank is communicated with a pump inlet of the horizontal split pump.

Optionally, the medium leakage collecting system includes a first pipeline and a pressure alarm, the first pipeline is in the medium inlet and provides communication between the unloading runners, and the pressure alarm is arranged in the first pipeline.

Optionally, the medium leakage collecting system comprises a one-way valve disposed in the first pipeline, the one-way valve being configured to allow fluid medium to flow from the unloading channel to the medium inlet.

The media leakage collection system has the same advantages as the above-mentioned horizontal split pump over the prior art and is not described in detail here.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

FIG. 1 is a schematic view of a first bisecting surface of a horizontal split pump of the present invention;

FIG. 2 is a schematic view of the pump body and the pump cover of the horizontal split pump according to the present invention;

fig. 3 is a schematic diagram of an embodiment of a media leak collection system of the present invention.

Description of the reference numerals

110-pump body, 111-first middle dividing surface, 120-pump cover, 121-second middle dividing surface, 210-first groove, 211-unloading flow channel, 220-second groove, 310-medium collecting tank, 320-first pipeline, 330-pressure alarm, 340-one-way valve

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1 and 2, the horizontal split pump of the present invention includes a pump body 110 and a pump cover 120; the pump body 110 has a first bisecting surface 111; the pump cover 120 has a second median surface 121 in mating contact with the first median surface 111; the first and/or

second bisecting surfaces

111, 121 are provided with a groove structure for accommodating a fluid medium, in particular a fluid medium of high temperature and high pressure.

The utility model discloses in, because the surface 121 is equipped with the groove structure who is used for holding fluid medium in surface 111 and/or the second in the first well, produce the resistance and hold a part of fluid medium when fluid medium passes through groove structure, make fluid medium's flow reduce to reach the purpose that reduces the medium and reveal, the operating cycle of division pump under harsh operating mode such as high temperature high pressure in the extension level.

It should be understood that the first and

second surfaces

111 and 121 may be provided with groove structures, or one of them may be provided with groove structures, depending on the orientation of the pump body 110 and the pump cover 120 of the horizontal split pump during use. In the following embodiments, explanation will be given taking an example in which the groove structure is provided only in the first midsplit surface 111 of the pump body 110.

The groove structure may be designed in various forms as long as it is capable of accommodating at least a part of the fluid medium in the event of leakage of the fluid medium. In an embodiment of the present invention, the groove structure is disposed along a circumferential extension of the first middle dividing surface 111. That is, the groove structure is annularly provided on the first median surface 111, and when the fluid medium flows from the center of the first median surface 111 to the edge of the first median surface 111, the fluid medium can always contact the groove structure and enter the groove structure, thereby achieving the purpose of reducing the leakage amount of the fluid medium.

It should be understood that the number of the annular groove structures may be plural, and the plural annular groove structures are radially spaced from the center of the first median surface 111 to the edge of the first median surface 111. For example, in an embodiment of the present invention, the groove structure includes a first groove 210 and a second groove 220, and the first groove 210 and the second groove 220 are spaced apart along a radial direction of the horizontal split pump, that is, the first groove 210 and the second groove 220 are spaced apart from a center of the first middle split surface 111 toward an edge of the first middle split surface 111, or the second groove 220 and the first groove 210 are spaced apart from a center of the first middle split surface 111 toward an edge of the first middle split surface 111.

In order to further improve the ability of the groove structure to block the leakage of the fluid medium, in an embodiment of the present invention, the first groove 210 and the second groove 220 are designed to be labyrinth-type structures, and the size of the labyrinth cavity thereof can be adjusted according to the area size, the pressure-bearing load, and the like of the first middle dividing surface 111.

In order to reduce the impact of the fluid medium on the groove structure, in an embodiment of the present invention, a smooth transition is formed between the groove wall and the groove bottom of the first groove 210, and a smooth transition is also formed between the groove wall and the groove bottom of the second groove 220.

Specifically, the first groove 210 is disposed outside the second groove 220 along the radial direction of the horizontal split pump, and an unloading channel 211 communicated with the outside is disposed at one end of the first groove 210 along the axial direction of the horizontal split pump. With this arrangement, when the flow rate of the fluid medium is large, the fluid medium flows into the outermost first groove 210 and is accumulated, and when the fluid medium is accumulated to a certain extent, the fluid medium flows out from the relief flow passage 211 of the first groove 210, thereby preventing the fluid medium in the first groove 210 from overflowing.

In order to guide the fluid medium to the unloading flow channel 211 in time, in an embodiment of the present invention, the bottom of the first groove 210 is an inclined surface to guide the fluid medium to flow to the unloading flow channel 211, so that the fluid medium is prevented from overflowing due to the fluid medium not being guided to the unloading flow channel 211 in time.

As shown in fig. 3, the present invention also provides a medium leakage collecting system, which comprises a medium collecting tank 310 and the above-mentioned horizontal split pump; the groove structure of the horizontal split pump is provided with an unloading flow channel 211; the medium inlet of the medium collection tank 310 is communicated with the unloading flow passage 211, and the medium outlet of the medium collection tank 310 is communicated with the pump inlet of the horizontal split pump. Specifically, the medium inlet of the medium collection tank 310 is communicated with the unloading flow channel 211 of the first groove 210, so that when the flow rate of the fluid medium is high, the outermost first groove 210 can guide the fluid medium overflowing from the second groove 220 to the unloading flow channel 211, and the fluid medium flows from the unloading flow channel 211 to the medium collection tank 310 for storage, and when the fluid medium in the medium collection tank 310 is stored to a certain extent, the fluid medium in the medium collection tank 310 can be reintroduced to the pump inlet of the horizontal split pump, so that the function of recycling the fluid medium is realized, the recovery and the utilization of the leaked fluid medium are facilitated, and the cost is greatly saved.

Further, the medium leakage collecting system comprises a first pipeline 320 and a pressure alarm 330, the first pipeline 320 provides communication between the medium inlet and the unloading channel 211, and the pressure alarm 330 is arranged on the first pipeline 320. The pressure alarm 330 is a pressure switch or a pressure transmitter, and when fluid medium leaks, the pressure alarm 330 starts to work to prompt the split surface of the horizontal split pump to leak in a sealing way.

To prevent the fluid medium from flowing backwards, in an embodiment of the present invention, the medium leakage collecting system comprises a check valve 340 disposed in the first pipeline 320, and the check valve 340 is configured to allow the fluid medium to flow from the unloading channel 211 to the medium inlet of the medium collecting tank 310 and into the medium collecting tank 310.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A horizontally split pump, characterized in that it comprises a pump body (110) and a pump cover (120);

the pump body (110) has a first bisecting surface (111);

the pump cover (120) is provided with a second midsplit surface (121) which is in fit contact with the first midsplit surface (111);

the first (111) and/or the second (121) midsplit surface is/are provided with a groove structure for accommodating a fluid medium.

2. Horizontal split pump according to claim 1, characterized in that the groove structure is provided along a circumferential extension of the first (111) and/or second (121) halving surface.

3. The horizontal split pump according to claim 2, wherein the groove structure comprises a first groove (210) and a second groove (220), the first groove (210) and the second groove (220) being spaced apart in a radial direction of the horizontal split pump.

4. The horizontal split pump according to claim 3, wherein the first groove (210) and/or the second groove (220) is a labyrinth-type structure.

5. The horizontal split pump according to claim 3, wherein the groove wall and the groove bottom of the first groove (210) and/or the second groove (220) are rounded.

6. The horizontal split pump according to any one of claims 3 to 5, wherein the first groove (210) is arranged outside the second groove (220) in the radial direction of the horizontal split pump, and one end of the first groove (210) in the axial direction of the horizontal split pump is provided with a relief flow passage (211) communicated with the outside.

7. The horizontal split pump according to claim 6, wherein the groove bottom of the first groove (210) is provided as an inclined surface to guide the fluid medium to flow to the unloading flow passage (211).

8. A media leak collection system, characterized in that the media leak collection system comprises a media collection tank (310) and a horizontal split pump according to any of claims 1-5;

an unloading flow channel (211) is arranged in the groove structure of the horizontal split pump;

the medium inlet of the medium collecting tank (310) is communicated with the unloading flow channel (211), and the medium outlet of the medium collecting tank (310) is communicated with the pump inlet of the horizontal split pump.

9. The media leakage collection system according to claim 8, comprising a first conduit (320) providing communication between the media inlet and the relief flow passage (211), and a pressure alarm (330), the pressure alarm (330) being arranged in the first conduit (320).

10. The media leakage collection system of claim 9, comprising a one-way valve (340) arranged in the first conduit (320), the one-way valve (340) being configured to allow fluid media to flow from the unloading channel (211) to the media inlet.