Anti-scour structure for feed water inlet of high-pressure heater

Abstract

The utility model provides a high pressure heater feed water inlet scour prevention structure which comprises a water inlet pipe, the outer wall of the bottom end of the water inlet pipe is fixedly connected with a scour prevention ring, the inner wall of the scour prevention ring is fixedly connected with a scour prevention pipe, and the inner wall of the top end of the scour prevention pipe is provided with a limiting groove. An anti-scour blocking block is arranged in the position, matched with the limiting groove in position, of the anti-scour pipe, a plurality of reset springs are evenly and fixedly connected to the bottom of the limiting groove, and the bottoms of the reset springs are fixedly connected to the bottom of the anti-scour blocking block. The anti-scour blocking block is driven by the reset spring to block the interior of the anti-scour pipe, meanwhile, it is ensured that water can be supplied to the water supply pipe normally, meanwhile, when water is heated and is in a high-temperature and high-pressure state, internal pressure is detected through the pressure sensor, when the pressure is too high, the pressure relief valve is matched with the pressure relief pipe to conduct pressure relief operation, and the using effect of the high-pressure heater is ensured; potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model is an anti-impact structure for a water supply inlet of a high-pressure heater, and relates to the technical field of heaters. Background Art

[0002] The high-pressure heater is a device that uses part of the steam turbine's exhaust air to heat the feed water. As a heat conversion device, it is mainly used in the heat recovery system of large thermal power units. The quality of its heat transfer performance directly affects the economy and safety of the unit. Therefore, improving the heat transfer efficiency of the high-pressure heater and reducing the irreversible loss in the heat transfer process have become one of the important measures to solve the problem of efficient energy utilization.

[0003] When the high-pressure heater is in use, water needs to be injected into the water chamber inside the heater through the water supply inlet, so as to perform heating operation by heating the water in the water chamber. As the water is heated and pressurized, the inside of the water chamber will be in a high-temperature and high-pressure state. At this time, the high-pressure and high-temperature water will impact the water supply inlet. In the prior art, most high-pressure heaters only use valves to protect the water supply inlet from impact. This protection will cause the water valve to be in a high-pressure state and easily damaged, resulting in the water supply inlet being unable to resist the impact of high-temperature and high-pressure water, causing safety hazards. Summary of the invention

[0004] In view of the shortcomings of the prior art, the utility model aims to provide an anti-collision structure for the water inlet of a high-pressure heater, which drives the anti-collision block to seal the inside of the anti-collision pipe through a reset spring, while ensuring that the water supply pipe can supply water normally. At the same time, when the water is heated and is in a high temperature and high pressure state, the internal pressure is detected by a pressure sensor. When the pressure is too high, the pressure is relieved through the pressure relief valve in cooperation with the pressure relief pipe, thereby ensuring the use effect of the high-pressure heater and reducing safety hazards, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a high-pressure heater water inlet anti-collision structure, including a water inlet pipe, the bottom outer wall of the water inlet pipe is fixedly connected with an anti-collision ring, the inner wall of the anti-collision ring is fixedly connected with an anti-collision pipe, the top inner wall of the anti-collision pipe is provided with a limiting groove, the anti-collision pipe is provided with an anti-collision block inside which matches the position of the limiting groove, the bottom of the limiting groove is evenly fixedly connected with a plurality of reset springs, and the bottoms of the plurality of reset springs are fixedly connected to the bottom of the anti-collision block.

[0006] Furthermore, a pressure relief pipe is fixedly connected to the side wall of the anti-collision pipe at the bottom end of the limiting groove, and one end of the pressure relief pipe away from the anti-collision pipe is fixedly connected to the anti-collision ring.

[0007] Furthermore, a pressure relief valve is provided at one end of the pressure relief pipe that passes through the anti-collision ring.

[0008] Furthermore, a working inner cavity is formed on the inner wall of the anti-collision ring, and a pressure sensor is fixedly connected to the inner wall at one end of the working inner cavity.

[0009] Furthermore, the detection end of the pressure sensor is fixedly connected to the anti-collision pipe, and the signal output end of the pressure sensor is electrically connected to the control end of the pressure relief valve.

[0010] Furthermore, a water inlet valve is provided at the top of the water inlet pipe located at the anti-collision ring.

[0011] The beneficial effects of the utility model are as follows: the anti-collision block is driven by the reset spring to seal the anti-collision pipe, while ensuring that the water supply pipe can supply water normally. At the same time, when the water is heated and is in a high temperature and high pressure state, the internal pressure is detected by the pressure sensor. When the pressure is too high, the pressure is relieved through the pressure relief valve and the pressure relief pipe, thereby ensuring the use effect of the high-pressure heater and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a schematic diagram of the main structure of a high-pressure heater water inlet anti-impact structure of the utility model;

[0014] Figure 2 It is an enlarged schematic cross-sectional view of an anti-impact ring in an anti-impact structure for a water inlet of a high-pressure heater according to the utility model;

[0015] Figure 3 This utility model is a high-pressure heater water inlet anti-impact structure Figure 2 A schematic diagram of the structure enlargement at the center A;

[0016] Figure 4 It is an enlarged schematic diagram of the cross-sectional structure of an anti-impact pipe in an anti-impact structure for a water inlet of a high-pressure heater according to the utility model.

[0017] In the figure: 1-water inlet pipe, 2-water inlet valve, 3-anti-collision ring, 31-working inner cavity, 32-anti-collision pipe, 33-pressure sensor, 34-limiting groove, 4-pressure relief pipe, 41-pressure relief valve, 5-anti-collision block, 51-reset spring. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figures 1 to 4The utility model provides a technical solution: an anti-collision structure for a water inlet of a high-pressure heater, comprising an inlet pipe 1, an anti-collision ring 3 is fixedly connected to the outer wall of the bottom end of the inlet pipe 1, an anti-collision pipe 32 is fixedly connected to the inner wall of the anti-collision ring 3, a limiting groove 34 is provided on the inner wall of the top end of the anti-collision pipe 32, an anti-collision block 5 is arranged inside the anti-collision pipe 32 so as to match the position of the limiting groove 34, a plurality of reset springs 51 are evenly fixedly connected to the bottom of the limiting groove 34, and the bottoms of the plurality of reset springs 51 are fixedly connected to the bottom of the anti-collision block 5.

[0020] Preferably, in this embodiment, the anti-blocking block 5 can be driven to move by the reset spring 51. When water enters, the water impacts the anti-blocking block 5 and compresses the reset spring 51, ensuring that the water can enter the high-pressure heater. When the internal high temperature and high pressure impact, the anti-blocking block 5 is limited by the limiting groove 34 to complete the anti-blocking operation.

[0021] Furthermore, a pressure relief pipe 4 is fixedly connected to the side wall of the anti-collision pipe 32 at the bottom end of the limiting groove 34 , and one end of the pressure relief pipe 4 away from the anti-collision pipe 32 is fixedly connected to the anti-collision ring 3 .

[0022] Furthermore, a pressure relief valve 41 is provided at one end of the pressure relief pipe 4 that passes through the anti-collision ring 3 .

[0023] Furthermore, a working inner cavity 31 is formed on the inner wall of the anti-collision ring 3 , and a pressure sensor 33 is fixedly connected to the inner wall of one end of the working inner cavity 31 .

[0024] Preferably, in this embodiment, the pressure sensor 33 is provided with a detection threshold. When the pressure sensor 33 reaches the detection threshold, an electrical signal is given to the pressure relief valve 41, the pressure relief valve 41 is started, and the pressure relief pipe 4 cooperates to complete the pressure relief operation, wherein the pressure relief valve 41 is an electrically controlled valve.

[0025] Furthermore, a detection end of the pressure sensor 33 is fixedly connected to the anti-collision pipe 32 , and a signal output end of the pressure sensor 33 is electrically connected to a control end of the pressure relief valve 41 .

[0026] Furthermore, a water inlet valve 2 is provided at the top of the water inlet pipe 1 located at the anti-collision ring 3 .

[0027] Preferably, in this embodiment, the conductance of the water inlet pipe 1 is controlled by the water inlet valve 2, and when water injection is required, the water inlet can be completed by opening the water inlet valve 2.

[0028] Specific implementation method: install the water inlet pipe 1 to the water inlet of the high-pressure heater, open the water inlet valve 2, and start water supply. During water supply, the external water source squeezes the anti-blocking block 5, pushes it downward, squeezes the reset spring 51, and completes the water supply operation.

[0029] When the operation is completed, the return spring 51 drives the anti-collision block 5 to move upward to complete the blocking of the anti-collision pipe 32.

[0030] When the high-pressure heater is working, the internal pressure increases, which impacts the anti-blocking block 5. At this time, the anti-blocking block 5 is limited by the limiting groove 34 to achieve the anti-blocking effect. At the same time, the internal pressure is detected by the pressure sensor 33. When it is detected that the internal pressure reaches the detection threshold, the pressure relief valve 41 is started to cooperate with the pressure relief pipe 4 to complete the pressure relief operation.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-pressure heater water inlet anti-impact structure, comprising a water inlet pipe (1), characterized in that: The outer wall of the bottom end of the water inlet pipe (1) is fixedly connected to an anti-collision ring (3), the inner wall of the anti-collision ring (3) is fixedly connected to an anti-collision pipe (32), a limiting groove (34) is provided on the inner wall of the top end of the anti-collision pipe (32), an anti-collision block (5) is arranged inside the anti-collision pipe (32) so as to match the position of the limiting groove (34), a plurality of return springs (51) are evenly fixedly connected to the bottom of the limiting groove (34), and the bottoms of the plurality of return springs (51) are fixedly connected to the bottom of the anti-collision block (5).

2. The anti-impact structure for water inlet of a high-pressure heater according to claim 1, characterized in that: A pressure relief pipe (4) is fixedly connected to the side wall of the anti-collision pipe (32) at the bottom end of the limiting groove (34), and one end of the pressure relief pipe (4) away from the anti-collision pipe (32) is fixedly connected to the anti-collision ring (3).

3. The anti-impact structure for water inlet of a high-pressure heater according to claim 2, characterized in that: A pressure relief valve (41) is provided at one end of the pressure relief pipe (4) that passes through the anti-collision ring (3).

4. The anti-impact structure for water inlet of a high-pressure heater according to claim 1, characterized in that: The inner wall of the anti-collision ring (3) is provided with a working inner cavity (31), and a pressure sensor (33) is fixedly connected to the inner wall of one end of the working inner cavity (31).

5. The anti-impact structure for water inlet of a high-pressure heater according to claim 4, characterized in that: The detection end of the pressure sensor (33) is penetrated and fixedly connected to the anti-shock pipe (32), and the signal output end of the pressure sensor (33) is electrically connected to the control end of the pressure relief valve (41).

6. The anti-impact structure for water inlet of a high-pressure heater according to claim 1, characterized in that: The water inlet pipe (1) is provided with a water inlet valve (2) at the top end of the anti-collision ring (3).

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