Steam curing device for PHC pipe pile

Abstract

The utility model discloses a PHC pipe pile steam curing device which comprises a plurality of autoclaves, each autoclave is provided with a steam inlet pipe and a steam outlet pipe, the device further comprises a steam main inlet pipe, a steam main outlet pipe and a steam branch inlet pipe, the steam main inlet pipe is arranged on the outer side of the steam main outlet pipe in a sleeved mode, the steam main inlet pipe is communicated with the steam branch inlet pipe, and the steam main outlet pipe is communicated with the steam branch inlet pipe. The branch steam inlet pipes are communicated with the steam inlet pipe, the steam outlet pipe penetrates through the main steam inlet pipe and is communicated with the main steam discharge pipe, and the communicating position of the main steam inlet pipe and the branch steam inlet pipes is located at the rear end of the position, penetrating through the main steam inlet pipe, of the steam outlet pipe according to the steam flowing direction of the main steam inlet pipe. According to the utility model, the heat of steam discharged by the autoclave can be fully utilized, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe pile production, in particular to a steaming device for PHC pipe piles. Background Art

[0002] Piles can be classified into prestressed concrete pipe piles, prestressed concrete thin-walled pipe piles and prestressed high-strength concrete pipe piles according to the concrete strength grade and wall thickness. Prestressed high-strength concrete pipe piles, referred to as PHC pipe piles, need to use autoclaves for high-temperature and high-pressure steam curing during production. After the steam curing is completed, the temperature and pressure need to be reduced to remove the pipe piles. In the early stage of cooling and reducing the pressure, the steam in the autoclave was discharged into the air, resulting in a large amount of heat being wasted. Under the current requirements of energy conservation and emission reduction, various companies have made improvements to this, such as the patent with application number "201920337710.1" and the name "A pipe pile curing steam recycling system". The patent transports the steam discharged from the autoclave to the steam curing pool and then to the floor heating system, and the heat is recycled. However, the temperature and pressure of the steam discharged from the autoclave are relatively high, and the steam curing pool is used for conventional steam curing, and the temperature and pressure are relatively low. In order to use the heat of the steam discharged from the autoclave, further cooling and pressure reduction are required, and there is still heat waste. Utility Model Content

[0003] The utility model aims to provide a steam curing device for PHC pipe piles, which can fully utilize the steam heat discharged from the autoclave and reduce energy consumption.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam curing device for PHC pipe piles, comprising a plurality of autoclaves, each autoclave is provided with a steam inlet pipe and a steam exhaust pipe, and also comprises a steam main inlet pipe, a steam main exhaust pipe and a steam branch inlet pipe, wherein the steam main inlet pipe is sleeved on the outside of the steam main exhaust pipe, the steam main inlet pipe is connected with the steam branch inlet pipe, the steam branch inlet pipe is connected with the steam inlet pipe, the steam outlet pipe penetrates the steam main inlet pipe and is connected with the steam main exhaust pipe, and according to the steam flow direction of the steam main inlet pipe, the connection point between the steam main inlet pipe and the steam branch inlet pipe is located at the rear end of the point where the steam outlet pipe penetrates the steam main inlet pipe.

[0005] As a preferred embodiment of the present technical solution, the main steam inlet pipe and the main steam exhaust pipe are coaxially arranged so that the steam in the main steam inlet pipe is evenly located on the periphery of the main steam exhaust pipe, and the heat exchange is more uniform.

[0006] As a preferred embodiment of the present technical solution, the steam flows in the steam main inlet pipe and the steam main exhaust pipe in opposite directions, and this arrangement improves the heat exchange effect of the steam.

[0007] As a preferred embodiment of the present technical solution, a control valve is provided on the steam branch inlet pipe, which can better control the steam volume in the steam branch inlet pipe.

[0008] As a preferred embodiment of the present technical solution, the steam inlet pipe and the steam outlet pipe are both provided with control valves, which can well control a single autoclave.

[0009] Compared with the prior art, the utility model can utilize the steam discharged from the autoclave and the incoming steam to perform good heat exchange, so that the steam before can be transported to the rear at a relatively low temperature for further heating, that is, the energy consumption of front-end heating to generate steam is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] In the figure: 1. Autoclave; 2. Main steam inlet pipe; 3. Main steam exhaust pipe; 4. Branch steam inlet pipe; 5. Steam inlet pipe; 6. Steam exhaust pipe; 7. Control valve. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] See also Figure 1 The utility model discloses a steam curing device for PHC pipe piles, comprising a plurality of autoclaves 1, each autoclave 1 is provided with a steam inlet pipe 5 and a steam exhaust pipe 6, and further comprising a steam main inlet pipe 2, a steam main exhaust pipe 3 and a steam branch inlet pipe 4. The steam main inlet pipe 2 is sleeved on the outside of the steam main exhaust pipe 3, that is, the steam main exhaust pipe 3 is arranged inside the steam main inlet pipe 2, and there is a space for conveying steam between the inner wall of the steam main inlet pipe 2 and the outer wall of the steam main exhaust pipe 3, the steam main inlet pipe 2 is connected with the steam branch inlet pipe 4, the steam branch inlet pipe 4 is connected with the steam inlet pipe 5, and the steam outlet pipe 6 is connected with the steam outlet pipe 6. It penetrates the steam main inlet pipe 2 and is connected with the steam main exhaust pipe 3, that is, the steam inlet pipe 5 of each autoclave 1 is connected with the steam branch inlet pipe 4, and the exhaust pipe 6 of each autoclave 1 penetrates the steam main inlet pipe 2 and is connected with the steam main exhaust pipe 3. According to the steam flow direction of the steam main inlet pipe 2, the connection point between the steam main inlet pipe 2 and the steam branch inlet pipe 4 is located at the rear end of the steam outlet pipe 6 penetrating the steam main inlet pipe 2, that is, when the steam in the steam main inlet pipe 2 flows, it first passes through the exhaust pipe 6 of the autoclave 1, penetrates the steam main inlet pipe 2, and then goes to the connection point between the steam main inlet pipe 2 and the steam branch inlet pipe 4.

[0014] When the utility model is implemented, the steam main inlet pipe 2 and the steam main exhaust pipe 3 are coaxially arranged, so that the steam in the steam main inlet pipe 2 is evenly distributed on the periphery of the steam main exhaust pipe 3, and the heat exchange is more uniform. The steam in the steam main inlet pipe 2 and the steam main exhaust pipe 3 flow in opposite directions, and this arrangement improves the heat exchange effect of the steam. The steam branch inlet pipe 4 is provided with a control valve, which can better control the steam flow of the steam branch inlet pipe. The steam inlet pipe and the steam outlet pipe are both provided with control valves 7, which can well control a single autoclave 1.

[0015] When the utility model is implemented, the steam main inlet pipe 2 is provided with a traditional heating device. When none of the autoclaves 1 is exhausting steam, the steam passing therethrough does not exchange the exhaust heat and cannot reach the temperature entering the autoclave 1. Therefore, the heating device needs to be activated to heat the steam to the required temperature. Of course, a heating device can also be provided on the steam branch inlet pipe 4 to avoid the situation where the heat exchanged by the exhaust steam of the autoclave 1 still cannot reach the temperature. Then, the heating device on the steam branch inlet pipe 4 is activated. The steam branch inlet pipe 4 transports the steam to the autoclave 1 that needs to be heated as required.

[0016] When the utility model is working, the steam enters the autoclave through the steam main inlet pipe and the steam branch inlet pipe to steam-cure the pipe piles. After the steam-cure is completed, the steam is discharged to the steam main exhaust pipe through the exhaust pipe to exchange heat with the steam in the steam main inlet pipe. After the steam in the steam main inlet pipe is heated, it enters the autoclave that needs to be heated through the steam branch inlet pipe, and the heat of the exhaust steam of the autoclave is well utilized.

[0017] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A steam curing device for PHC piles, comprising a plurality of autoclaves, each of which is provided with a steam inlet pipe and a steam exhaust pipe, characterized in that: It also includes a steam main inlet pipe, a steam main exhaust pipe and a steam branch inlet pipe. The steam main inlet pipe is sleeved on the outside of the steam main exhaust pipe. The steam main inlet pipe is connected to the steam branch inlet pipe, and the steam branch inlet pipe is connected to the steam inlet pipe. The steam outlet pipe passes through the steam main inlet pipe and is connected to the steam main exhaust pipe. According to the steam flow direction of the steam main inlet pipe, the connection point between the steam main inlet pipe and the steam branch inlet pipe is located at the rear end of the steam outlet pipe passing through the steam main inlet pipe.

2. The steaming curing device for PHC pipe piles according to claim 1, characterized in that: The main steam inlet pipe and the main steam exhaust pipe are coaxially arranged.

3. The steaming curing device for PHC pipe piles according to claim 2, characterized in that: The steam flows in the steam main inlet pipe and the steam main exhaust pipe in opposite directions.

4. The steaming curing device for PHC pipe piles according to claim 1, characterized in that: The steam branch inlet pipe is provided with a control valve.

5. The steaming curing device for PHC piles according to claim 1, characterized in that: The steam inlet pipe and the steam outlet pipe are both provided with control valves.

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