CN219410781U - Ground factory building hydropower station tail water cooler arrangement structure capable of realizing dry-type overhaul - Google Patents

Abstract

The utility model provides a ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul, which comprises a first overhaul gate groove and a second overhaul gate groove which are separately arranged, wherein the first overhaul gate groove is arranged on a first platform, the second overhaul gate groove is arranged on one side of the first platform, a tail water cooler overhaul gate is connected in a sliding manner in the first overhaul gate groove, a tail water pipe overhaul gate is connected in a sliding manner in the second overhaul gate groove, the bottom surface of the tail water cooler overhaul gate at the lowest running position is arranged on the upper surface of the first platform, and the tail water cooler overhaul gate and the tail water pipe overhaul gate do not need to be suspended in a hanging manner when in dry overhaul and do not interfere with each other in an independent lifting manner in the use process; the lower surfaces of the tail water cooler overhaul gate and the tail water pipe overhaul gate can be in plane contact, so that the bottom tightness of the overhaul gate is guaranteed, the overhaul gate does not need to be suspended during overhaul, and potential safety hazards are avoided.

Description

Ground factory building hydropower station tail water cooler arrangement structure capable of realizing dry-type overhaul

Technical Field

The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul.

Background

In order to solve the problems of high sediment content in reservoirs during flood season, blockage and abrasion of a unit cooler and a water filter and the like, a secondary circulating cooling water supply system is generally adopted in the technical water supply system of the current large and medium-sized ground plant hydropower station, the working principle of the system is that water in a circulating water tank is pressurized by a water pump to be sent to each user of the unit, then the water is cooled by a tail water cooler and then flows into the circulating water tank, so that a secondary circulating cooling water supply system is formed, and river water in a runner or a tail water channel is primary water and can be used as a cold source for heat exchange.

Meanwhile, the tail water cooler serving as one of key equipment of the secondary circulation cooling water supply system of the hydropower station is usually arranged on a platform at the downstream side of a tail water pipe overhaul gate, and although the arrangement mode has good cooling effect and good economy, the tail water cooler needs a 'time window' for daily overhaul and maintenance (namely, the downstream tail water level is lower than the positions of support fixing bolts at the upper part of the tail water cooler and connecting flanges of water inlet pipes and water outlet pipes of the cooler), so that dry overhaul cannot be realized, and the problems of easy blockage, difficult centering, antifreezing of pipelines and the like during hoisting exist at the later stage.

Chinese patent No. CN214194771U discloses a secondary circulation cooling water supply system for a hydropower station, which arranges a tail water cooler in a separately-installed tail water cooler water tank, and then introduces a water supply pipe from a penstock as primary cooling water and into the tail water cooler water tank, and after heat exchange, discharges the water to the downstream through a cooler tank drain pipe. However, the method can realize dry overhaul of the tail water cooler, but has the problems of complicated operation, uneconomical energy conservation, poor cooling effect and the like.

Chinese patent No. CN208363056U discloses a tail water cooler maintenance device for avoiding underwater operation, which arranges a tail water cooler on an upstream side platform of a tail water maintenance gate, however, when the tail water cooler needs to be maintained, the tail water trolley needs to be used for hanging the cooler maintenance gate into a gate slot and then hanging the cooler maintenance gate at a specified height all the time, so that a certain safety risk exists. Meanwhile, the tail water cooler overhaul gate is supported by no sill, the bottom sealing of the tail water cooler overhaul gate is difficult to guarantee, and operation interference exists between the tail water cooler gate and the tail water pipe overhaul gate.

In view of the above, it is highly desirable to find a ground plant hydropower station tail water cooler arrangement structure which can safely and reliably realize the dry overhaul of the tail water cooler, avoid underwater operation of divers, eliminate uncertain risk factors, and facilitate daily overhaul and maintenance of equipment.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, provide a ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul, and solve the problems that in the prior art, when the tail water cooler is overhauled, the overhaul gate is suspended into a gate slot and then is suspended all the time, so that potential safety hazards exist, and the bottom tightness of the overhaul gate is difficult to ensure under the condition of suspending the overhaul gate.

For this purpose, the utility model adopts the following technical scheme:

can realize ground factory building hydroelectric station tail water cooler arrangement structure of dry-type maintenance, including first platform and be higher than the second platform of first platform, install the tail water cooler on the first platform, be equipped with the door machine on the second platform, be equipped with the tail water cavity under the first platform, still including the first maintenance gate slot and the second maintenance gate slot that separate set up, first maintenance gate slot set up in the top of first platform, the second maintenance gate slot set up in the outside of first platform, sliding connection has tail water cooler maintenance gate in the first maintenance gate slot, second maintenance gate slot sliding connection has tail water pipe maintenance gate, and minimum running position the tail water cooler maintenance gate can be and by first platform supports, tail water cooler maintenance gate with the tail water pipe maintenance gate need not to hang and independent lift in the use when carrying out the dry-type maintenance.

On the basis of adopting the technical scheme, the utility model can also adopt the following further technical schemes or use the further technical schemes in combination:

the top of first platform is equipped with the breast wall, the breast wall is located the tail water cooler with between the first maintenance gate slot, the water inlet has been seted up to the downside of breast wall, the minimum of water inlet is located the upper surface of first platform, the height of tail water cooler maintenance gate is higher than the height of water inlet, the breast wall is higher than the minimum tail water level of low reaches, requires the height of tail water cooler maintenance gate to be higher than the minimum tail water side of low reaches during dry overhaul.

One side of the tail water cooler is provided with a ladder for connecting the first platform and the second platform, and a water filling valve is arranged above a maintenance gate of the tail water cooler.

The utility model discloses a tail water cooler, including the side wall, the bottom outlet, the side wall outlet, the bottom outlet with be equipped with the side wall outlet in the side wall of first platform, the bottom outlet with the side wall outlet all with the maintenance chamber UNICOM at tail water cooler place, the bottom outlet with the side wall outlet all downwardly extending and with the drainage house steward UNICOM in the side wall, drainage house steward downwardly extending pass through draft tube operation corridor with the tail water chamber in proper order, the below in tail water chamber is equipped with unit maintenance drainage house steward, the drainage house steward inserts unit maintenance drainage house steward, the draft tube operation corridor downstream side the drainage house steward is connected and is equipped with a plurality of normally closed manual ball valves.

The middle of the tail water cavity is provided with a barrier, two tail water coolers are respectively arranged above the first platforms at two sides of the barrier, and the tail water sides of the two tail water coolers are respectively provided with a first overhaul gate slot and a second overhaul gate slot in sequence.

The distance between first access gate slot and the second access gate slot is greater than 1m, the tail water cooler is located the low reaches minimum tail water level downside just the distance between tail water cooler and the low reaches minimum tail water level is greater than 0.5m, the tail water cooler with pass through stainless steel rag bolt fixed connection between the first platform, the material of tail water cooler is the stainless steel, the design velocity of flow of tail water cooler is less than 1m/s.

The side wall water outlet is 25 cm-30 cm higher than the bottom water outlet, and the side wall water outlet and the water inlet side of the bottom water outlet are both provided with a trash rack.

The tail water cooler is fixed on the upper surface of the first platform through foundation bolts connected with the lower foundation.

The door machine is a two-way door machine.

The normally-closed manual ball valve is provided with two.

Compared with the prior art, the utility model has the following advantages: according to the utility model, the first overhaul gate slot and the second overhaul gate slot are separately arranged, so that the overhaul gate of the tail water cooler and the overhaul gate of the tail water pipe are independently lifted and do not interfere with each other during dry overhaul; through setting up first access gate slot on first platform, set up the second access gate slot on the lower surface of tail water cavity for the lower surface of tail water cooler access gate and draft tube access gate can with plane contact when carrying out dry-type maintenance, when having guaranteed access gate bottom leakproofness, the access gate need not to hang when the maintenance, does not have the potential safety hazard.

Drawings

FIG. 1 is a schematic diagram of a layout structure of a tail water cooler of a hydropower station of a ground plant, which can realize dry overhaul;

fig. 2 is a structural plan view of the present utility model.

Detailed Description

For a better understanding of the technical solutions of the present utility model by those skilled in the art, a preferred embodiment of the present utility model is described below with reference to specific examples, which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar functional elements throughout, but it is understood that the drawings are for illustrative purposes only and are not to be construed as limiting the utility model; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted in order to illustrate the utility model only and not to limit the utility model.

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Reference is made to the accompanying drawings. The utility model provides a ground hydropower station tail water cooler arrangement structure capable of realizing dry overhaul, which comprises a first platform 107 and a second platform 101 higher than the first platform 107, wherein a tail water cooler 2 is arranged on the first platform 107, a door machine 1 is arranged on the second platform 101, a tail water cavity 5 is arranged below the first platform 107, the ground hydropower station tail water cooler arrangement structure further comprises a first overhaul gate groove 104 and a second overhaul gate groove 103 which are arranged separately, the first overhaul gate groove 104 is arranged on the first platform 107, the second overhaul gate groove 103 is arranged on the outer side of the first platform 107, a tail water cooler overhaul gate 9 is connected in a sliding manner in the first overhaul gate groove 104, the bottom surface of the tail water cooler overhaul gate 9 in the lowest operation position is arranged on the upper surface of the first platform 107, and the tail water cooler overhaul gate 9 and the tail water pipe overhaul gate 7 do not need to be lifted and lowered independently during the dry overhaul process.

The first platform 107 is provided with a breast wall 105 above, the breast wall 105 is located between the tail water cooler 2 and the first maintenance gate slot 104, the lower side of the breast wall 105 is provided with a water inlet 21, the lowest position of the water inlet 21 is located on the upper surface of the first platform 107, the height of the tail water cooler maintenance gate 9 is higher than the height of the water inlet 21, the breast wall 105 is higher than the lowest tail water level at the downstream, the height of the tail water cooler maintenance gate is required to be higher than the lowest tail water side at the downstream during dry maintenance, and the height of the breast wall 105 can be used as the extension height of the tail water cooler maintenance gate 9.

One side of the tail water cooler 2 is provided with a ladder stand 8 connected with a first platform 107 and a second platform 101, a water filling valve 10 is arranged above a maintenance gate 9 of the tail water cooler, and the water filling valve 10 can be opened through the door machine 1.

A bottom water outlet 12 is arranged in the first platform 107, a side wall water outlet 11 is arranged in a side wall perpendicular to the first platform 107, the bottom water outlet 12 and the side wall water outlet 11 are communicated with an overhaul cavity where the tail water cooler 2 is arranged, the bottom water outlet 12 and the side wall water outlet 11 extend downwards and are communicated with a water drain main pipe 3 in the side wall, the drainage header pipe 3 downwards extends to sequentially pass through the draft tube operation gallery 102 and the tail water cavity 5, a unit maintenance drainage header pipe 6 is arranged below the tail water cavity 5, the drainage header pipe 3 is connected with the unit maintenance drainage header pipe 6, and a plurality of normally closed manual ball valves 4 are connected with the drainage header pipe 3 at the downstream side of the draft tube operation gallery 102.

The middle of the tail water cavity 5 is provided with a barrier 106, two tail water coolers 2 are respectively arranged above a first platform 107 on two sides of the barrier 106, and the tail water sides of the two tail water coolers 2 are respectively provided with a first overhaul gate slot 104 and a second overhaul gate slot 103 in sequence.

The distance between first access gate slot 104 with the second access gate slot 103 is greater than 1m, tail water cooler 2 is located the low reaches minimum tail water level downside just distance between tail water cooler 2 and the low reaches minimum tail water level is greater than 0.5m, tail water cooler 2 with through stainless steel rag bolt fixed connection between the first platform 107, the material of tail water cooler 2 is the stainless steel, the design velocity of flow of tail water cooler 2 is less than 1m/s, thereby can guarantee tail water cooler 2 has sufficient heat radiating area.

The side wall water outlet 11 is 25 cm-30 cm higher than the bottom water outlet 12, and the water inlet sides of the side wall water outlet 11 and the bottom water outlet 12 are provided with trash racks, so that mortar or sundries are prevented from being blocked.

The tail water cooler 2 is fixed to the upper surface of the first platform 107 by anchor bolts connected to the lower foundation.

The door machine 1 is a two-way door machine.

The normally closed manual ball valve 4 is provided with two.

The utility model can realize the maintenance steps of the arrangement structure of the tail water cooler of the hydropower station of the ground factory building, which is dry-type maintenance, comprising the following steps:

a. after the arrangement structure of the tail water cooler of the ground plant hydropower station capable of realizing dry overhaul is installed, debugged and inspected and has operation conditions, the tail water cooler overhaul gate 9 and the tail water pipe overhaul gate 7 are positioned on the second platform 101, when the tail water cooler 2 needs to be overhauled, the tail water cooler overhaul gate 9 is placed into the first overhaul gate groove 104 through the door machine 1 until the lower surface of the tail water cooler overhaul gate 9 is contacted with the first platform 107, and at the moment, the tail water cavity where the tail water cooler 2 is positioned is completely isolated from the downstream lowest tail water level by the combination of the tail water cooler overhaul gate 9 and the breast wall 105;

b. manually opening two normally-closed manual ball valves 4 on the water drain main pipe 3, adjusting the opening of the normally-closed manual ball valves 4 to a proper position, collecting accumulated water in a tail water cavity where the tail water cooler 2 is positioned into the water drain main pipe 3 through a bottom water outlet 12 and a side wall water outlet 11, sequentially draining the accumulated water to a unit maintenance water collecting well through the water drain main pipe 3 and a unit maintenance water drain main pipe 6, and finally draining the accumulated water out of a factory by utilizing a water collecting well water drain pump;

c. after the accumulated water in the tail water cavity where the tail water cooler 2 is located is confirmed to be drained, an maintainer can enter the first platform 107 through the crawling ladder 8 to carry out maintenance work on the tail water cooler 2, if the damage of the tail water cooler 2 is large and the tail water cooler needs to be transported to the ground for repair, foundation bolts on the foundation of the lower part of the tail water cooler 2 need to be unscrewed, and the tail water cooler 2 is suspended to the second platform 101 through the gantry crane 1;

d. after the tail water cooler is overhauled and maintained on the ground, after the tail water cooler 2 is hung to the first platform 107 through the door machine 1, an maintainer enters the first platform 107 through the cat ladder 8, and after foundation bolts of the foundation at the lower part of the tail water cooler 2 are fixed on the first platform 107, the maintainer returns to the second platform 101 through the cat ladder 8;

e. the water filling valve 10 above the tail water cooler overhaul gate 9 is opened through the door machine 1 until the water level before and after the tail water cooler overhaul gate 9 is pressed flatly, and the tail water cooler overhaul gate 9 in the first overhaul gate groove 104 is lifted to the second platform 101 through the tail water door machine 1 for storage.

The arrangement of the tail water cooler of the ground power plant, which can realize dry overhaul, can be easily manufactured or used by a person skilled in the art according to the description of the utility model and the attached drawings, and can produce the positive effects described in the utility model.

It is noted that the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the foregoing drawings are intended to cover non-exclusive inclusions. The terms "mounted," "configured," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two mechanisms, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terms "one end," "another end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," "right," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the mechanisms or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. The terms "first," "second," and the like, are also used for simplicity of description only and are not indicative or implying relative importance.

Furthermore, variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed utility model, from a study of the drawings, the disclosure, and the appended claims. Furthermore, in the claims, the specification, the words "comprise", "comprising", and the like do not exclude other elements or steps, and the non-plural terms do not exclude a plurality.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, i.e. all equivalent changes and modifications that may be made in accordance with the present utility model are covered by the appended claims, which are not intended to be construed as limiting.

Claims (10)

1. Can realize ground factory building hydroelectric station tail water cooler arrangement structure of dry-type maintenance, including first platform (107) and be higher than second platform (101) of first platform (107), install tail water cooler (2) on first platform (107), be equipped with door machine (1) on second platform (101), be equipped with tail water cavity (5) under first platform (107), its characterized in that: still including separately first access gate slot (104) and second access gate slot (103) that set up, first access gate slot (104) set up in the top of first platform (107), second access gate slot (103) set up in the outside of first platform (107), sliding connection has tailpipe cooler access gate (9) in first access gate slot (104), sliding connection has tailpipe access gate (7) in second access gate slot (103), minimum running position tailpipe cooler access gate (9) can and by first platform (107) support, tailpipe cooler access gate (9) with tailpipe access gate (7) need not to hang and independent lift mutually noninterfere in the use when carrying out the dry maintenance.

2. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: the top of first platform (107) is equipped with breast wall (105), breast wall (105) are located tail water cooler (2) with between first inspection gate slot (104), water inlet (21) have been seted up to the downside of breast wall (105), the lowest department of water inlet (21) is located the upper surface of first platform (107), the height of tail water cooler inspection gate (9) is higher than the height of water inlet (21), breast wall (105) are higher than the minimum tail water level of low reaches.

3. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: one side of the tail water cooler (2) is provided with a ladder stand (8) connected with the first platform (107) and the second platform (101), and a water filling valve (10) is arranged above the tail water cooler overhaul gate (9).

4. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: be equipped with bottom outlet (12) in first platform (107), be equipped with in the side wall of perpendicular to first platform (107) side wall outlet (11), bottom outlet (12) with side wall outlet (11) all with the maintenance chamber UNICOM at tailwater cooler (2) place, bottom outlet (12) with side wall outlet (11) all downwardly extending and with the drainage house steward (3) UNICOM in the side wall, drainage house steward (3) downwardly extending pass through draft tube operation corridor (102) with tail water chamber (5) in proper order, the below in tail water chamber (5) is equipped with unit maintenance drainage house steward (6), drainage house steward (3) access unit maintenance drainage house steward (6), the drainage house steward (3) of tailpipe operation corridor (102) downstream side connect and are equipped with a plurality of normally closed manual ball valves (4).

5. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: the middle of the tail water cavity (5) is provided with a barrier (106), two tail water coolers (2) are respectively arranged above first platforms (107) on two sides of the barrier (106), and the tail water sides of the two tail water coolers (2) are respectively provided with a first overhaul gate slot (104) and a second overhaul gate slot (103) in sequence.

6. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: the distance between first access gate slot (104) and second access gate slot (103) is greater than 1m, tail water cooler (2) are located the low reaches minimum tail water level downside just distance between tail water cooler (2) and the low reaches minimum tail water level is greater than 0.5m, tail water cooler (2) with pass through stainless steel rag bolt fixed connection between first platform (107), the material of tail water cooler (2) is the stainless steel, the design velocity of flow of tail water cooler (2) is less than 1m/s.

7. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 4, wherein: the side wall water outlet (11) is 25 cm-30 cm higher than the bottom water outlet (12), and the side wall water outlet (11) and the water inlet side of the bottom water outlet (12) are both provided with a trash rack.

8. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: the tail water cooler (2) is fixed on the upper surface of the first platform (107) through foundation bolts connected with the lower foundation.

9. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 1, wherein: the door machine (1) is a two-way door machine.

10. The ground plant hydropower station tail water cooler arrangement structure capable of realizing dry overhaul as claimed in claim 4, wherein: the normally-closed manual ball valve (4) is provided with two.