Deep peak regulation heat storage device for thermal power plant

Abstract

The utility model discloses a deep peak regulation heat storage device of a thermal power plant, which relates to the technical field of heat storage devices and comprises a heat storage cylinder, a water retaining mechanism, a buffer mechanism, a first blocking mechanism and a second blocking mechanism, the top end of the heat storage cylinder is fixedly connected with a water distribution pipe in a penetrating manner, and the water retaining mechanism is arranged inside the heat storage cylinder. The buffering mechanism is arranged at the bottom end of the water retaining mechanism, the first blocking mechanism is arranged on the outer wall of the water retaining block, and the second blocking mechanism is arranged at the bottom end of the first blocking mechanism. Water flow contacts with the water retaining block when entering the heat storage cylinder through the water distribution pipe, the water retaining block moves downwards and the flow velocity of the water flow is slowed down under the cooperation of the buffer mechanism, and then the slowed down water flow can flow out through a gap reserved between the first blocking mechanism and the water retaining mechanism under the cooperation of the first blocking mechanism and the second blocking mechanism. And water flow is prevented from flowing back and splashing to the top end and the side edge of the inner wall of the heat storage cylinder, so that the protection effect on the heat storage cylinder is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat storage device technical field, especially relates to a thermal power plant depth peak shaving heat storage device. BACKGROUND

[0002] In the operation process of thermal power plant, depth peak shaving is an important means to deal with power grid load fluctuation. However, frequent load adjustment can lead to unstable operation parameters of the unit, especially the thermal system on the boiler side is easy to be impacted. In order to alleviate this problem, heat storage device is widely used in the peak shaving process of thermal power plant, which balances the load change of the unit by storing or releasing heat energy, and improves the flexibility and stability of system operation.

[0003] The traditional heat storage device lacks effective buffering and flow guiding structure when high-temperature and high-pressure water flow is injected rapidly, so the high-speed water flow is easy to directly impact the inner wall of the heat storage cylinder. Long-term impact of high-speed water flow can cause the inner wall material of the heat storage cylinder to wear, reduce the service life of the equipment, and the water flow without speed reduction may splash to the top or side wall of the heat storage cylinder, or even cause backflow phenomenon, further aggravate the equipment wear. Therefore, we provide a thermal power plant depth peak shaving heat storage device. SUMMARY

[0004] The utility model discloses a thermal power plant depth peak shaving heat storage device, which solves the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a thermal power plant depth peak shaving heat storage device, comprising:

[0006] The water distribution pipe is fixedly connected to the top end of the heat storage cylinder.

[0007] The water blocking mechanism is arranged in the interior of the heat storage cylinder.

[0008] The buffer mechanism is arranged at the bottom end of the water blocking mechanism.

[0009] The first blocking mechanism is arranged on the outer wall of the water blocking block.

[0010] The second blocking mechanism is arranged at the bottom end of the first blocking mechanism.

[0011] Preferably, the water blocking mechanism comprises a water blocking block, which is arranged in a hemispherical shape, and the buffer mechanism is arranged at the bottom end of the water blocking block.

[0012] Preferably, the buffer mechanism comprises:

[0013] The connecting rod is fixedly connected to the bottom end of the water blocking block.

[0014] The fixed cylinder is fixedly connected to the bottom end of the inner wall of the heat storage cylinder, the top end of the fixed cylinder is provided with a movable hole, and the outer wall of the connecting rod is movably and penetratingly connected with the inner wall of the movable hole.

[0015] The limiting block is movably connected with the inner wall of the movable cavity.

[0016] The extrusion spring is arranged at the bottom end of the limiting block.

[0017] Preferably, the first blocking mechanism comprises:

[0018] The first water blocking pipe is provided with a plurality of fixed rods fixedly connected with the outer wall of the water blocking block.

[0019] The water blocking ring is fixedly connected to the top end of the first water blocking pipe, and the second blocking mechanism is arranged at the top end of the water blocking ring.

[0020] Preferably, the second blocking mechanism comprises a second water blocking pipe, the bottom end of the second water blocking pipe is fixedly connected with the top end of the water blocking ring, and the outer wall of the second water blocking pipe is movably and penetratingly connected with the inner wall of the water distribution pipe.

[0021] Preferably, the top end of the second water blocking pipe is provided with an inclined surface, the top of the outer wall of the second water blocking pipe is attached with a rubber sleeve, and the outer wall of the rubber sleeve is provided in an interference fit with the inner wall of the water distribution pipe.

[0022] Preferably, the bottom end of the first water blocking pipe is fixedly connected with a guide rod, the bottom end of the inner wall of the heat storage cylinder is fixedly connected with a guide sleeve, and the outer wall of the guide rod is movably and penetratingly connected with the inner wall of the guide sleeve.

[0023] The technical effects and advantages of the utility model are as follows:

[0024] The first blocking mechanism and the second blocking mechanism are arranged, when water flows into the heat storage cylinder through the water distribution pipe, the water flow first contacts the water blocking block, and under the cooperation of the buffer mechanism, the water blocking block moves downward, the water flow entering the heat storage cylinder slows down, then the cooperation of the first blocking mechanism and the second blocking mechanism enables the slowed water flow to flow out through the gap reserved between the first blocking mechanism and the water blocking mechanism, and the water flow is prevented from flowing back and splashing to the top end and the side edge of the inner wall of the heat storage cylinder, thereby improving the protection effect on the heat storage cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 It is a three-dimensional structure schematic view of the utility model.

[0026] Fig. 2The utility model discloses a front sectional structure schematic diagram.

[0027] Fig. 3 The utility model discloses a second water retaining pipe three-dimensional structure schematic diagram.

[0028] In the drawing: 101, heat storage cylinder;102, water distribution pipe;201, water retaining block;301, connecting rod;302, fixed cylinder;303, movable hole;304, movable cavity;305, limiting block;306, extrusion spring;401, first water retaining pipe;402, water retaining ring;403, fixed rod;501, second water retaining pipe;601, inclined plane;701, rubber sleeve;801, guide rod;802, guide sleeve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] The utility model provides a kind of thermal power plant depth peak regulation heat storage device as Figs. 1-3 As shown in a kind of thermal power plant depth peak regulation heat storage device, including heat storage cylinder 101, water retaining mechanism, buffer mechanism, first blocking mechanism and second blocking mechanism, the top of heat storage cylinder 101 is fixed and is connected with water distribution pipe 102, water retaining mechanism is set to the inside of heat storage cylinder 101, buffer mechanism is set to the bottom of water retaining mechanism, first blocking mechanism is set to the outer wall of water retaining block 201, second blocking mechanism is set to the bottom of first blocking mechanism, when water flow enters heat storage cylinder 101 inside by water distribution pipe 102, water flow will first contact with water retaining block 201, simultaneously under the cooperation of buffer mechanism, so that water retaining block 201 is moved down, the water flow speed of entering heat storage cylinder 101 is slowed down, then the cooperation of first blocking mechanism and second blocking mechanism, so that slowed down water flow can flow out through the gap reserved between first blocking mechanism and water retaining mechanism, avoid water flow backflow splashing to the top and side edge of the inner wall of heat storage cylinder 101, to improve the protection effect to heat storage cylinder 101.

[0031] Among them, water retaining mechanism includes water retaining block 201, water retaining block 201 is set to hemispherical, buffer mechanism is set to the bottom of water retaining block 201, by the arc outer wall of water retaining block 201, water flow contacted with water retaining block 201 can flow along water retaining block 201 to all around and slow down flow rate.

[0032] The buffering mechanism comprises a connecting rod 301, a fixing cylinder 302, a limiting block 305 and an extrusion spring 306. The top end of the connecting rod 301 is fixedly connected with the bottom end of the water blocking block 201. The fixing cylinder 302 is fixedly connected with the bottom end of the inner wall of the heat storage cylinder 101. The top end of the fixing cylinder 302 is provided with a movable hole 303. The outer wall of the connecting rod 301 is movably inserted into the inner wall of the movable hole 303. The top end of the limiting block 305 is fixedly connected with the bottom end of the connecting rod 301. The inner wall of the movable hole 303 is provided with a movable cavity 304. The outer wall of the limiting block 305 is slidably connected with the inner wall of the movable cavity 304. The extrusion spring 306 is arranged at the bottom end of the limiting block 305. When the water flow enters the heat storage cylinder 101 through the water distribution pipe 102, the water flow impacts the water blocking block 201. The water blocking block 201 is extruded by the water flow to drive the connecting rod 301 to move downward. The fixing cylinder 302 moves downward to drive the limiting block 305 to move downward. The limiting block 305 can compress the extrusion spring 306 to buffer the impact force of the water flow.

[0033] The first blocking mechanism comprises a first water blocking pipe 401 and a water blocking ring 402. The bottom end of the inner wall of the first water blocking pipe 401 is fixedly connected with a plurality of fixing rods 403. One end of each of the plurality of fixing rods 403 is fixedly connected with the outer wall of the water blocking block 201. The water blocking ring 402 is fixedly connected with the top end of the first water blocking pipe 401. The second blocking mechanism is arranged at the top end of the water blocking ring 402. The water flow slowed down by the water blocking block 201 cannot splash to the side edge of the inner wall of the heat storage cylinder 101 through the blocking of the first water blocking pipe 401 and the water blocking ring 402.

[0034] The second blocking mechanism comprises a second water blocking pipe 501. The bottom end of the second water blocking pipe 501 is fixedly connected with the top end of the water blocking ring 402. The outer wall of the second water blocking pipe 501 is movably inserted into the inner wall of the water distribution pipe 102. The water flow can be guided in the water distribution pipe 102 through the arrangement of the second water blocking pipe 501 so that the water flow stably flows to the water blocking block 201 and the backflow after the water flow is slowed down leaves through the gap between the plurality of fixing rods 403.

[0035] The top end of the second water blocking pipe 501 is provided with an inclined surface 601. A rubber sleeve 701 is attached to the top of the outer wall of the second water blocking pipe 501. The outer wall of the rubber sleeve 701 is in interference fit with the inner wall of the water distribution pipe 102. The water flow can stably enter the inside of the heat storage cylinder 101 through the guidance of the inclined surface 601. The second water blocking pipe 501 and the water distribution pipe 102 are sealed through the arrangement of the rubber sleeve 701 so that the water flow in the water distribution pipe 102 cannot enter between the water distribution pipe 102 and the second water blocking pipe 501, thereby improving the stability of the working of the second blocking mechanism.

[0036] The bottom end of the first water retaining pipe 401 is fixedly connected with a guide rod 801, the bottom end of the inner wall of the heat storage cylinder 101 is fixedly connected with a guide sleeve 802, the outer wall of the guide rod 801 is movably inserted into the inner wall of the guide sleeve 802, the guide sleeve 802 guides the guide rod 801, so that the water retaining block 201 is more stable when descending under the impact of water flow, thereby ensuring the stability of the water retaining mechanism.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A thermal power plant deep peak shaving and heat storage device, characterized in that, The application relates to a water storage device. The water storage device comprises a water storage cylinder (101), a water blocking mechanism, a buffer mechanism, a first blocking mechanism and a second blocking mechanism. The water blocking mechanism comprises a water blocking block (201) in a semispherical shape. The buffer mechanism comprises a connecting rod (301), a fixed cylinder (302), a limiting block (305) and a compression spring (306). The first blocking mechanism comprises a first water blocking pipe (401), a water blocking ring (402) and a second water blocking pipe (501). The second water blocking pipe (501) is fixedly connected with the top end of the water blocking ring (402) and movably connected with the inner wall of the water distribution pipe (102).

2. The device according to claim 1, characterized in that, The top end of the second water blocking pipe (501) is provided with an inclined surface (601), and the top of the outer wall of the second water blocking pipe (501) is attached with a rubber sleeve (701) in an interference fit with the inner wall of the water distribution pipe (102).

3. The device according to claim 2, characterized in that, The bottom end of the first water blocking pipe (401) is fixedly connected with a guide rod (801), and the bottom end of the inner wall of the water storage cylinder (101) is fixedly connected with a guide sleeve (802), and the outer wall of the guide rod (801) is movably connected with the inner wall of the guide sleeve (802). ​ ​ ​ ​ 4. The device according to claim 2, characterized in that, ​ ​ ​ 5. The thermal energy storage device for deep load following of a thermal power plant according to claim 4, characterized in that ​ 6. The thermal energy storage device for deep load following of a thermal power plant according to claim 5, characterized in that ​ 7. The device according to claim 4, characterized in that, ​

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