CN211874560U

CN211874560U - Oil cooler and steam turbine

Info

Publication number: CN211874560U
Application number: CN201922232372.8U
Authority: CN
Inventors: 刘运智; 焦薇
Original assignee: Beijing Dibai New Energy Technology Co ltd
Current assignee: Beijing Dibai New Energy Technology Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-11-06
Anticipated expiration: 2029-12-12

Abstract

The utility model provides an oil cooler and steam turbine, the oil cooler includes: the cooling device comprises a shell, a first cooling device and a second cooling device, wherein the shell comprises a first end and a second end which are opposite to each other, the first end is provided with a cooling medium inlet chamber, and the second end is provided with a cooling medium outlet chamber; and a cold oil tube bundle assembly disposed within the shell; the cold oil tube bundle assembly comprises: a cold oil pipe bundle; the plurality of tube bundle baffles are sequentially arranged at intervals along the length direction of the cold oil tube bundle, the cold oil tube bundle is arranged on the plurality of tube bundle baffles in a penetrating manner, and the outer diameter size of the tube bundle baffles is larger than that of the cold oil tube bundle; and the tube bundle sealing plate is wrapped outside the tube bundle partition plate. The utility model discloses an oil cooler can prevent oil cooler leakage flow, prevents oil cooler flow short circuit, great promotion oil cooler's heat transfer effect to reduce the assembly degree of difficulty, improved the production of oil cooler, make and the economic nature of operation.

Description

Oil cooler and steam turbine

Technical Field

The utility model relates to a power equipment technical field especially relates to an oil cooler and steam turbine.

Background

The oil cooler is turbine oil cooling equipment matched with a steam turbine in a power system, is of a light pipe surface type, and adopts circulating water as a medium to realize heat exchange, so that the oil temperature at the inlet of the bearing is ensured to reach a specified value, and the normal operation of a unit is ensured. The existing oil cooler has certain disadvantages when in use:

the tubular oil cooler of the turboset is usually characterized in that a shell is sleeved outside a cold oil tube bundle, the gap between a partition plate of the cold oil tube bundle and the shell is too large, the assembling gap is too small (about 1.5mm), the actual production and assembly are difficult to ensure, the heat exchange effect is seriously influenced, and in order to ensure that the temperature of lubricating oil at an outlet is below 45 ℃, the heat exchange area of the oil cooler is continuously increased from 60 square meters to 100 square meters. But the ideal heat exchange effect can not be achieved under the severe conditions in summer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil cooler and steam turbine can improve heat exchange efficiency.

The utility model provides a technical scheme as follows:

the utility model provides an oil cooler, include: the cooling device comprises a shell, a first cooling device and a second cooling device, wherein the shell comprises a first end and a second end which are opposite to each other, the first end is provided with a cooling medium inlet chamber, and the second end is provided with a cooling medium outlet chamber; and a cold oil tube bundle assembly disposed within the shell; the cold oil tube bundle assembly comprises:

a cold oil pipe bundle;

the plurality of tube bundle baffles are sequentially arranged at intervals along the length direction of the cold oil tube bundle, the cold oil tube bundle is arranged on the plurality of tube bundle baffles in a penetrating manner, and the outer diameter size of the tube bundle baffles is larger than that of the cold oil tube bundle;

and the tube bundle sealing plate is wrapped outside the tube bundle partition plate.

Illustratively, the tube bundle sealing plate is a stainless steel sheet.

Illustratively, the cold oil tube bundle includes a plurality of cold oil tubes, and the cold oil tubes are stainless steel tubes.

Illustratively, the stainless steel tube has a diameter of 19 mm.

Illustratively, the first end of casing is equipped with first ring flange, be equipped with the second ring flange on the cooling medium gets into the cavity, first ring flange with the second ring flange is connected, and is in press from both sides between first ring flange and the second ring flange and be equipped with the elastic gasket.

Illustratively, the thickness of the resilient gasket in the length direction of the cold oil tube bundle is 5 mm.

A steam turbine comprising an oil cooler as described above.

The utility model discloses the beneficial effect who brings as follows:

above-mentioned scheme comes the cold oil tube bank parcel through the tube bank shrouding, can make the clearance between cold oil tube bank subassembly and the casing reduce, can optimize 0 clearance even to can prevent oil cooler leakage flow, prevent oil cooler flow short circuit, great promotion oil cooler's heat transfer effect, and reduced the assembly degree of difficulty, improve the economic nature of production, manufacturing and the operation of oil cooler.

Drawings

Fig. 1 is a front view of a cold oil bundle assembly of an oil cooler according to an embodiment of the present invention;

FIG. 2 shows a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 shows a cross-sectional view taken along line B-B of FIG. 2;

fig. 4 shows a sectional view of a portion D of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1 to 4, the embodiment of the present invention provides an oil cooler, including: casing 100 and set up in cold oil tube bundle subassembly 200 in casing 100, casing 100 includes relative first end and second end, the first end is equipped with cooling medium and gets into cavity 300, the second end is equipped with cooling medium discharge chamber 400, cold oil tube bundle subassembly 200 includes: the oil cooling tube bundle comprises a oil cooling tube bundle 210, a plurality of tube bundle partition plates 220 and a tube bundle closing plate 230, wherein the tube bundle partition plates 220 are sequentially arranged at intervals along the length direction of the oil cooling tube bundle 210, the oil cooling tube bundle 210 penetrates through the tube bundle partition plates 220, the outer diameter of the tube bundle partition plates 220 is larger than that of the oil cooling tube bundle 210, and the tube bundle closing plate 230 is wrapped outside the tube bundle partition plates 220.

According to the scheme, the tube bundle sealing plate 230 is used for wrapping the cold oil tube bundle 210 (namely, the tube bundle sealing plate 230 is wrapped outside the tube bundle partition plate 220), so that the gap between the cold oil tube bundle 210 assembly 200 and the shell 100 can be reduced and even optimized to be 0 gap, and due to the existence of the tube bundle sealing plate 230, the assembly gap can be increased, for example, the assembly gap can reach 15mm, so that the oil cooler can be prevented from leaking, the short circuit of the oil cooler process can be prevented, the heat exchange effect of the oil cooler can be greatly improved, the assembly difficulty is reduced, and the economical efficiency of production, manufacturing and operation of the oil cooler can be improved.

In an exemplary embodiment, as shown in fig. 2 and 3, the plurality of tube bundle baffles 220 includes a plurality of first tube bundle baffles 221 and a plurality of second tube bundle baffles 222, the first tube bundle baffles 221 and the second tube bundle baffles 222 are sequentially spaced apart, the first tube bundle baffles 221 have an outer diameter dimension greater than an outer diameter dimension of the second tube bundle baffles 222, and the tube bundle closing plate 230 is wrapped around the first tube bundle baffles 221. Therefore, when the cooling medium flows in a cavity formed by the common enclosure of the tube bundle partition plate and the tube bundle sealing plate, the flowing heat exchange effect of the cooling medium can be improved.

In an exemplary embodiment, the tube bundle closure plate 230 is a stainless steel sheet.

By adopting the scheme, the tube bundle sealing plate 230 can be formed by wrapping the stainless steel sheet outside the cold oil tube bundle 210, and has low cost and simple manufacturing process. It is understood, however, that the tube bundle closing plate 230 may be implemented by other heat-conducting thin plates in practical applications, and is not limited thereto.

Further, in an exemplary embodiment, the cold oil tube bundle 210 includes a plurality of cold oil tubes, and the cold oil tubes are stainless steel tubes. In the above scheme, the stainless steel smooth straight pipe is used to replace the original copper pipe with higher cost, so that the cost can be reduced. Preferably, the diameter of the stainless steel pipe is 19mm, and a stainless steel smooth straight pipe with the diameter of 19mm can be used for replacing an original copper pipe with the higher cost and the diameter of 15 mm.

In addition, in an exemplary embodiment, as shown in fig. 1 to 4, the first end of the housing 100 is provided with a first flange 101, the cooling medium inlet chamber 300 is provided with a second flange 301, the first flange 101 is connected with the second flange 301, an elastic gasket 500 is interposed between the first flange 101 and the second flange 301, and the elastic gasket 500 can be elastically deformed.

In the prior art, a 20mm thick tube plate ring is usually fixedly arranged at the end of the cold oil tube bundle 210 as an absorption thermal expansion structure, and by adopting the above scheme, an elastic gasket 500 is clamped between the first flange 101 at the first end of the end shell 100 of the cold oil tube bundle 210 and the second flange 301 of the cooling medium inlet chamber 300, and the elastic gasket 500 can generate elastic deformation and serve as the absorption thermal expansion structure, so that the oil cooler can further prevent leakage flow of the oil cooler, prevent short circuit of the oil cooler flow, greatly improve the heat exchange effect of the oil cooler, reduce the assembly difficulty, and improve the production, manufacturing and operation economy of the oil cooler.

Also, illustratively, the thickness of the elastomeric gasket 500 is 5mm in the length direction of the cold oil tube bundle 210. Thus, the elastic washer 500 is thin and is easily elastically deformed. It is understood that, in practical applications, the thickness parameters of the elastic washer 500 and the like can be adjusted according to practical applications, and are not limited thereto.

Furthermore, the embodiment of the utility model provides an in still provide a steam turbine, include the embodiment of the utility model provides an oil cooler.

The following points need to be explained:

(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.

(2) For purposes of clarity, the thickness of layers or regions in the figures used to describe embodiments of the present disclosure are exaggerated or reduced, i.e., the figures are not drawn on a true scale. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

(3) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be subject to the claims.

Claims

1. An oil cooler, comprising: the cooling device comprises a shell, a first cooling device and a second cooling device, wherein the shell comprises a first end and a second end which are opposite to each other, the first end is provided with a cooling medium inlet chamber, and the second end is provided with a cooling medium outlet chamber; and a cold oil tube bundle assembly disposed within the shell; characterized in that the cold oil tube bundle assembly comprises:

a cold oil pipe bundle;

2. The oil cooler of claim 1,

the tube bundle sealing plate is a stainless steel thin plate.

3. The oil cooler of claim 1,

the cold oil pipe bundle comprises a plurality of cold oil pipes, and the cold oil pipes are stainless steel pipes.

4. The oil cooler of claim 3,

the diameter of the stainless steel pipe is 19 mm.

5. The oil cooler of claim 1,

the first end of the shell is provided with a first flange plate, the cooling medium enters the cavity and is provided with a second flange plate, the first flange plate is connected with the second flange plate, and an elastic gasket is clamped between the first flange plate and the second flange plate.

6. The oil cooler of claim 5,

the thickness of the elastic gasket in the length direction of the cold oil pipe bundle is 5 mm.

7. A steam turbine comprising an oil cooler according to any one of claims 1 to 6.