Temperature and pressure reducer for boiler

Abstract

The utility model relates to the technical field of boiler supporting facilities, and provides a temperature and pressure reducer for a boiler, which comprises a pipeline body, a mounting plate arranged in the pipeline body, a bolt arranged on a temperature and pressure reducing pipeline, a fixing component arranged on the inner side wall of the pipeline body, and a supporting component arranged on the bottom surface of the pipeline body. The fixing assembly comprises a fixing opening, the fixing opening is formed in the pipeline body, a connecting rod is arranged on the mounting plate, a mounting frame is arranged on the connecting rod, a fixing pin is arranged on the mounting frame, a baffle is arranged on the fixing pin, a spring is arranged on the baffle, a supporting rod is arranged on the mounting plate, a pin shaft is arranged on the supporting rod, and a pull rod is connected to the fixing pin. By means of the technical scheme, the problems that in the prior art, a temperature and pressure reducer needs to be used in the working process of a boiler, but the workload of constructors is greatly increased due to the fact that installation is not convenient in the using process, and overhauling is complex, time-consuming and labor-consuming are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler supporting facilities, and specifically, to a desuperheating and pressure reducing device for boilers. Background Art

[0002] A desuperheating and pressure reducing device, as the name implies, is to reduce high-temperature and high-pressure steam to low-pressure and low-temperature steam (which can be superheated steam) that customers can use. Taking the outlet of the boiler superheater as an example, the steam generated by the boiler passes through the outlet of the superheater to the steam turbine for work. The steam turbine has a range requirement for the incoming steam parameters. If the steam parameters at the outlet of the superheater exceed the upper limit required by the steam turbine, it will cause damage to the steam turbine. Therefore, it is necessary to use a desuperheating and pressure reducing device to reduce the parameters within the applicable range.

[0003] For the split-type desuperheating and pressure reducing device, desuperheating and pressure reduction are carried out separately, and a separate pressure reducing valve is used for pressure reduction. The split-type desuperheating and pressure reducing device has the advantages of high control accuracy, stable operation, sensitive adjustment, and can effectively eliminate the influence of static error, and is widely used.

[0004] It is surface type: generally, there is a shell, inside which there is a tube bundle. The tube bundle is made of steel pipes or brass pipes. In power plants, it is generally water or steam. One kind of fluid flows through the shell, and another kind of fluid flows through the tube bundle. In the literature, the former is called the "shell side", and the latter is called the "tube side". There is a temperature difference between the fluids in the tube side and the shell side, that is, the temperature of the fluid inside and outside the tube wall of the tube bundle is different. By virtue of the good heat conduction performance of the tube wall, heat is transferred from the high-temperature side to the low-temperature side to achieve the purpose of desuperheating the relatively high-temperature fluid. It has the functions of adjusting the flow rate. According to the needs of different processes, the desuperheating and pressure reducing device can adjust the flow rate of the medium to avoid pipeline rupture or equipment failure caused by too large or too small flow rate; reducing pressure, by reducing the pressure of the medium, ensuring the normal operation of pipelines and equipment, and avoiding explosion or leakage caused by too high medium pressure; adjusting temperature, controlling the temperature of the medium to ensure that the medium temperature does not exceed the set value and maintaining the normal operation of pipelines and equipment. The pressure reduction process: high-pressure gas or liquid is depressurized through a pressure reducing valve to reduce its pressure, making the intermolecular distance in the fluid larger and the internal energy lower to achieve the purpose of cooling; heat exchange function, through the heat exchange between the tubes and the shell in the heat exchanger, part of the heat is transferred to the low-temperature medium to further reduce the temperature; temperature control, the temperature controller adjusts the temperature and pressure of the medium according to the system requirements; maintaining stability, the desuperheating and pressure reducing device can be divided into two basic types: direct-acting type and indirect-acting type. The direct-acting type means that there is no interface between the medium and the regulating element, and the flow rate and pressure of the medium are directly adjusted, while the indirect-acting type is adjusted through an intermediate medium.

[0005] During the operation of the boiler, a desuperheating and pressure reducing device is required. However, during the use process, there are problems such as inconvenient installation, which will increase the workload of construction workers greatly, and the maintenance is complex, time-consuming and laborious. In view of this, a desuperheating and pressure reducing device for boilers is developed. Content of the Utility Model

[0006] The utility model provides a desuperheating and pressure reducing device for boilers. During the operation of the boiler, a desuperheating and pressure reducing device is required. However, during the use process, there are problems such as inconvenient installation, which will increase the workload of construction workers greatly, and the maintenance is complex, time-consuming and laborious.

[0007] The technical solution of the utility model is as follows: It includes

[0008] A pipeline body, an installation plate is arranged inside the pipe body, and bolts are arranged on the desuperheating and pressure reducing pipeline;

[0009] A fixing component, which is arranged on the inner side wall of the pipeline body;

[0010] A supporting component, which is arranged on the bottom surface of the pipeline body;

[0011] The fixing component includes a fixing port, which is arranged on the pipeline body. There is a connecting rod on the installation plate, an installation frame is arranged on the connecting rod, a fixing pin is arranged on the installation frame, a baffle is arranged on the fixing pin, a spring is arranged on the baffle, a support rod is arranged on the installation plate, a pin shaft is arranged on the support rod, and a pull rod is connected to the fixing pin.

[0012] As a further technical solution, the supporting component includes a bracket, which is arranged on the pipeline body. A connecting shaft is arranged on the support frame, and a roller is installed on the connecting shaft.

[0013] As a further technical solution, the bolt is screwed on the connecting piece on the side wall of the desuperheating and pressure reducing pipeline.

[0014] As a further technical solution, the fixing pin is arranged in the fixing port.

[0015] As a further technical solution, the baffle is arranged on the fixing pin.

[0016] As a further technical solution, the spring is arranged on the baffle.

[0017] As a further technical solution, a desuperheating and pressure reducing pipeline is arranged on the installation plate, and a pressure reducing device and a desuperheating device are arranged on the side wall of the desuperheating and pressure reducing pipeline.

[0018] As a further technical solution, a control device is arranged at the end of the desuperheating and pressure reducing pipeline.

[0019] The working principle and beneficial effects of the present utility model are as follows:

[0020] In the present utility model, the mounting plate in the fixing component is placed on the roller, and then the crosswise pull rod is moved so that the other end of the pull rod translates the fixing pin in the mounting frame. Then, the mounting plate is pushed into the pipe body to align the fixing pin with the fixing opening, achieving the fixing effect. The pressure reducing device and the temperature reducing device extend out of the pipe body for normal use and display data parameters. The pipe body provides skin protection for the temperature reducing and pressure reducing pipe and isolates the temperature to prevent the temperature reducing and pressure reducing pipe from affecting the temperature in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is a side cross-sectional view of the present utility model;

[0024] Figure 3 is a side cross-sectional view of the present utility model from another perspective;

[0025] Figure 4 is a partially enlarged view of part A of the present utility model;

[0026] Figure 5 is a partially enlarged view of part B of the present utility model;

[0027] In the figure: 1, pipe body; 2, mounting plate; 3, bolt; 4, fixing component; 4-1, fixing opening; 4-2, connecting rod; 4-3, mounting frame; 4-4, fixing pin; 4-5, baffle; 4-6, spring; 4-7, support rod; 4-8, pin shaft; 4-9, pull rod; 5, support component; 5-1, bracket; 5-2, connecting shaft; 5-3, roller; 6, temperature reducing and pressure reducing pipe; 7, temperature reducing device; 8, cooling device; 9, control device. SPECIFIC EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0029] As Figures 1 to 5 shown, this embodiment proposes a temperature reducing and pressure reducing device for a boiler, including

[0030] The pipeline body 1 is provided with a mounting plate 2 inside the pipe body, and bolts 3 are provided on the temperature-reducing and pressure-reducing pipeline 6;

[0031] A fixing component 4 is arranged on the inner side wall of the pipeline body 1;

[0032] A supporting component 5 is arranged on the bottom surface of the pipeline body 1;

[0033] The fixing component 4 includes a fixing opening 4-1 arranged on the pipeline body 1. A connecting rod 4-2 is arranged on the mounting plate 2. An installation frame 4-3 is arranged on the connecting rod 4-2. A fixing pin 4-4 is arranged on the installation frame 4-3. A baffle 4-5 is arranged on the fixing pin 4-4. A spring 4-6 is arranged on the baffle 4-5. A support rod 4-7 is arranged on the mounting plate 2. A pin shaft 4-8 is arranged on the support rod 4-7. A pull rod 4-9 is connected to the fixing pin 4-4.

[0034] In this embodiment, the mounting plate 2 is placed on the roller 5-3, and then the pull rod 4-9 is horizontally moved so that the other end of the pull rod 4-9 translates the fixing pin 4-4 in the installation frame 4-3. Then the mounting plate 2 is pushed into the pipeline body 1 to align the fixing pin 4-4 with the fixing opening 4-1. Then the pull rod 4-9 is released, and the fixing pin 4-4 is inserted into the fixing opening 4-1 through the spring 4-6 to fix it, thereby achieving the effect of fixing the position of the mounting plate 2.

[0035] Specifically, the supporting component 5 includes a bracket 5-1 arranged on the pipeline body 1. A connecting shaft 5-2 is arranged on the support frame. A roller 5-3 is installed on the connecting shaft 5-2.

[0036] In this embodiment, the bolt 3 is screwed on the connecting piece on the side wall of the temperature-reducing and pressure-reducing pipeline 6. The bracket 5-1 is located at the inner bottom of the pipeline body 1 and is used to support the connecting shaft 5-2. The roller 5-3 on the connecting shaft 5-2 contacts the installation frame 4-3 and is used for adjusting the position of the installation frame 4-3 to realize the position movement of the mounting plate 2.

[0037] Furthermore, the fixing pin 4-4 is arranged in the fixing opening 4-1, and the baffle 4-5 is arranged on the fixing pin 4-4.

[0038] Furthermore, the spring 4-6 is arranged on the baffle 4-5. A temperature-reducing and pressure-reducing pipeline 6 is arranged on the mounting plate 2. A pressure-reducing device and a temperature-reducing device 7 are arranged on the side wall of the temperature-reducing and pressure-reducing pipeline 6. A control device 9 is arranged at the end of the temperature-reducing and pressure-reducing pipeline 6.

[0039] The components arranged on the temperature-reducing and pressure-reducing pipeline 6 are as follows:

[0040] Control system: The main controller adopts a high-precision multi-functional digital controller, which has powerful functional components, a friendly human-machine interface, and a fast and accurate PID control loop, realizing intelligent unattended operation, flexible adjustment of parameter settings, and functional expansion according to user requirements.

[0041] Pressure reducing device: The pressure reduction process of steam is achieved by the throttling of a pressure reducing valve and an orifice plate. The number of pressure reduction stages is determined by the pressure difference between the new steam and the reduced steam. The pressure regulation of the pressure reducing valve is completed by a large actuator electric actuator, which operates smoothly and has a long service life. According to the set value requirement of the secondary steam, no matter how the primary steam pressure fluctuates, the secondary steam pressure can be kept stable.

[0042] Desuperheating device 7: A desuperheating water atomization device specially designed using aerodynamic technology, which uses the fluid's own power to reduce the equipment power consumption. The desuperheating water is pulverized into mist-like water droplets and mixed with steam and quickly and completely evaporated, thus achieving the effect of reducing the steam temperature.

[0043] When desuperheating and pressure reducing are required, the desuperheating and pressure reducing pipeline 6 is placed on the mounting plate 2 and fixed with bolts 3. Then, pick up the mounting plate 2 and place it on the roller 5-3. Then, horizontally move the pull rod 4-9 so that the other end of the pull rod 4-9 translates the fixed pin 4-4 in the mounting bracket 4-3. Then, push the mounting plate 2 into the pipeline body 1 to align the fixed pin 4-4 with the fixing port 4-1. Then, release the pull rod 4-9 and insert the fixed pin 4-4 into the fixing port 4-1 through the spring 4-6 to fix it.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A boiler temperature and pressure reducer, characterized in that: include A pipeline body (1), wherein a mounting plate (2) is arranged inside the pipeline body (1), a temperature reduction and pressure reduction pipeline (6) is arranged on the mounting plate (2), and a bolt (3) is arranged on the temperature reduction and pressure reduction pipeline (6); A fixing component (4), the fixing component (4) being arranged on the inner side wall of the pipeline body (1); A support assembly (5), the support assembly (5) being arranged on the bottom surface of the pipeline body (1); The fixing assembly (4) comprises a fixing opening (4-1), wherein the fixing opening (4-1) is arranged on the pipe body (1), a connecting rod (4-2) is arranged on the mounting plate (2), a mounting frame (4-3) is arranged on the connecting rod (4-2), a fixing pin (4-4) is arranged on the mounting frame (4-3), a baffle (4-5) is arranged on the fixing pin (4-4), a spring (4-6) is arranged on the baffle (4-5), a support rod (4-7) is arranged on the mounting plate (2), a pin shaft (4-8) is arranged on the support rod (4-7), and a pull rod (4-9) is connected to the fixing pin (4-4).

2. A boiler temperature and pressure reducer according to claim 1, characterized in that: The support assembly (5) comprises a bracket (5-1), the bracket (5-1) is arranged on the pipeline body (1), a connecting shaft (5-2) is arranged on the bracket (5-1), and a roller (5-3) is installed on the connecting shaft (5-2).

3. A boiler temperature and pressure reducer according to claim 1, characterized in that: The bolts (3) are screwed onto the side wall connecting pieces of the temperature and pressure reducing pipe (6).

4. A boiler temperature and pressure reducer according to claim 1, characterized in that: The fixing pin (4-4) is arranged in the fixing opening (4-1).

5. A boiler temperature and pressure reducer according to claim 1, characterized in that: The baffle (4-5) is arranged on the fixing pin (4-4).

6. A boiler temperature and pressure reducer according to claim 1, characterized in that: The spring (4-6) is arranged on the baffle (4-5).

7. A boiler temperature and pressure reducer according to claim 1, characterized in that: The side wall of the temperature reduction and pressure reduction pipeline (6) is provided with a pressure reduction device and a temperature reduction device (7).

8. A boiler temperature and pressure reducer according to claim 1, characterized in that: A control device (9) is provided at the end of the temperature reduction and pressure reduction pipeline (6).

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