Noise reduction and ventilation system for compressor room of natural gas gathering station

Abstract

The utility model discloses a noise reduction and ventilation system for a compressor room of a natural gas gathering station, which is characterized in that the side wall of a machine room is provided with a sound absorption wall body, an air inlet window of the machine room is provided with an air inlet silencer, and an exhaust silencer is arranged outside an exhaust fan of the machine room; a temperature sensor, a combustible gas sensor, a humidity sensor, a noise sensor and an atomization spraying device which are connected with the PLC system are arranged in the machine room; a wind speed sensor and a PM2.5 sensor which are connected with the PLC system are arranged outside the machine room; an exit door and an entrance door of the machine room are soundproof doors; the beneficial effects of the utility model are that: not only can the noise in the compressor room be reduced in a wider frequency band, but also the noise radiated by the compressor room can be reduced in the wider frequency band; and the requirements of waste heat elimination and accident ventilation of a compressor room can be met.

Description

Technical Field

[0001] The utility model relates to the field of gas energy collection, in particular to a noise reduction and ventilation system for a compressor room of a natural gas gathering station. Background Art

[0002] In the process of collecting gas energy such as natural gas, the compressor of the gas gathering station plays a vital role. The compressor is generally installed in the compressor room. The noise generated by a single compressor is generally 90-100dB (A). The noise of multiple compressors will be superimposed, and the noise generated will be higher. The noise generated by the compressor has a wide frequency band and has high noise values ​​at low, medium and high frequencies.

[0003] At present, the walls and roofs of compressor rooms are generally constructed with steel frames + color steel composite panels. The main doors are sliding doors or outward-opening doors made of color steel composite panels, and the windows are ordinary blinds or soundproof glass windows. The existing compressor rooms have the following problems during use: 1. When the temperature is high in summer, the doors and windows need to be opened for ventilation and heat dissipation. The noise radiates directly through the doors and windows to the outside of the factory boundary, and the noise intensity cannot meet the relevant environmental protection requirements; 2. The sound absorption coefficient of the color steel composite panel is low, and the reverberation sound in the compressor room is serious. It will cause harm to the hearing and health of employees during inspections, and cannot meet the relevant occupational health requirements; 3. The ventilation of the compressor room generally adopts the "natural ventilation + mechanical ventilation" method. When the outdoor temperature is high in summer, ventilation alone sometimes cannot meet the heat dissipation requirements, and the compressor will have a high temperature alarm. The station staff need to manually sprinkle water in the machine room to cool down, and the work intensity is high; 4. When the outdoor temperature is low in winter, the station staff need to close the doors and windows of the compressor room and seal the blinds, and open them when the temperature rises. Manual operation cannot make good use of the waste heat generated by the compressor when it is working to control the temperature of the compressor room, which increases the labor intensity; 5. There are many sandstorms in some areas. If the doors and windows of the compressor room are not closed in time, sand and dust will enter the compressor room, causing equipment blockage and wear, which will affect work efficiency and service life, and even cause safety accidents.

[0004] To this end, our company proposed a noise reduction and ventilation system for the compressor room of a natural gas gathering station. Summary of the invention

[0005] The utility model aims to provide a noise reduction and ventilation system for a compressor room of a natural gas gathering station, which can reduce the noise of the compressor room and optimize the ventilation environment of the room.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A noise reduction and ventilation system for a compressor room of a natural gas gathering station, wherein the side walls of the room are provided with sound-absorbing walls, the air inlet windows of the room are provided with air inlet mufflers, the exhaust fans of the room are provided with exhaust mufflers outside, a temperature sensor, a combustible gas sensor, a humidity sensor, a noise sensor, and an atomizing spray device connected to a PLC system are provided in the room; a wind speed sensor and a PM2.5 sensor connected to the PLC system are provided outside the room, an atomizing spray device is provided on the ceiling of the room, and the entrances and exits of the room are soundproof doors.

[0008] Preferably, an electric shutter is also provided inside the outer side of the air inlet muffler.

[0009] Preferably, the opening angle range of the electric blinds is 0°-90°.

[0010] Preferably, the sound-absorbing wall comprises a square tube fixedly connected to the C-shaped steel of the machine room wall, an aluminum perforated plate is arranged on the outside of the square tube, a sound-absorbing cavity is formed between the machine room wall and the aluminum perforated plate, and glass fiber wool is filled between the square tube and the aluminum perforated plate, and the glass fiber wool is wrapped with glass fiber cloth.

[0011] Preferably, the air inlet muffler and the exhaust muffler are both composed of vertical impedance composite muffler sheets;

[0012] The vertical impedance composite sound-absorbing sheet comprises resistive parts located at two sides and a reactive part located in the middle.

[0013] Preferably, the system further comprises a PLC system, and the machine room is provided with a temperature sensor, a combustible gas sensor, a wind speed sensor, a PM2.5 sensor, a humidity sensor, and a noise sensor connected to the PLC system;

[0014] A wind speed sensor and a PM2.5 sensor connected to the PLC system are arranged outside the machine room.

[0015] Preferably, the electric blinds and the atomizing spray device are both connected to a PLC system.

[0016] The beneficial effects of the utility model are:

[0017] 1. This system can not only reduce the noise in the compressor room in a wider frequency band, but also reduce the noise radiated by the compressor room in a wider frequency band; it can also meet the requirements of waste heat elimination and accident ventilation in the compressor room.

[0018] 2. This system also realizes intelligent and automatic control through PLC. At low temperatures, it can use the waste heat generated by the compressor to increase the temperature in the compressor room, so that the compressor can operate at a more suitable ambient temperature. It also reduces the large amount of sand and dust entering the compressor room during sandstorms and reduces the impact of sand and dust on equipment. And through automatic control, it reduces the workload of staff and saves energy and reduces consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 It is a left view of the utility model;

[0022] Figure 4 It is a rear view of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the sound-absorbing wall in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the neutral impedance composite silencer of the utility model.

[0025] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings. Example

[0027] like Figure 1 — Figure 4 As shown, a noise reduction and ventilation system for a compressor room of a natural gas gathering station of the present embodiment, a sound absorbing wall 1 is provided on the side wall of the machine room, and the sound absorbing wall 1 is installed on the walls of the four walls of the machine room to reduce the external radiation of noise, an air inlet muffler 2 is provided at the air inlet window of the machine room to reduce the noise caused by the air intake in the machine room, an exhaust muffler 5 is provided outside the exhaust fan 4 of the machine room to reduce the noise caused by the exhaust in the machine room, an atomizing spray device 8 is provided on the ceiling of the machine room, when the temperature in the machine room is high, the atomizing spray device is started to spray and cool down the machine room, the exit 6 and entrance 7 of the machine room are both soundproof doors to reduce the external propagation of noise.

[0028] like Figure 5As shown, the sound-absorbing wall 1 is located inside the machine room wall and is arranged parallel to the machine room wall. The sound-absorbing wall 1 includes a square tube 12 fixedly connected to the C-shaped steel 11 of the machine room wall. An aluminum perforated plate 13 is arranged on the outside of the square tube 12. The square tube 12 and the aluminum perforated plate 13 are connected by self-drilling screws. A cavity 14 is formed between the machine room wall and the aluminum perforated plate. Glass fiber wool 15 is filled between the square tube 12 and the aluminum perforated plate 13. The glass fiber wool is wrapped with glass fiber cloth. This structure reduces the indoor noise of the machine room. The current compressor room adopts a color steel composite plate structure with a low sound absorption coefficient. Most of the radiated noise generated by the equipment is reflected, generating reverberation sound indoors. The sound-absorbing wall 1 used in this application has a strong sound absorption capacity and less reflection, thereby reducing the reverberation sound indoors. The thickness of the cavity 14 is 230-250 mm, and the periphery of the square tube 12 in the cavity is filled with 50-100 mm thick ultra-fine glass fiber wool; the thickness of the aluminum perforated plate is 0.8-1.5 mm, the aperture is φ2-5 mm, and the perforation rate is 2%-5%.

[0029] like Figure 6 As shown, an electric shutter 3 is also provided inside the outer side of the air inlet muffler 2, and ventilation in the machine room is achieved by opening and closing the electric shutter 3. The opening angle range of the electric shutter 3 is 0°-90°, where 0° is a closed state and 90° is a fully open state.

[0030] like Figure 6 As shown, the air inlet muffler 2 adopts an impedance composite muffler, which is installed on the front and rear walls of the machine room, facing the place where the compressor unit has a large heat dissipation, for noise reduction and ventilation. Under the condition of the maximum exhaust volume of the compressor room, the wind speed of the air inlet muffler is 2-4m / s. The muffler sheet of the air inlet muffler 2 is a vertical impedance composite muffler sheet, with resistive parts 21 on both sides and reactive parts 22 in the middle; the thickness of the muffler sheet is 150-350mm, and the net distance of the muffler sheet is 100-200mm.

[0031] The exhaust fan 4 is installed on the top of the machine room or on the upper part of the wall. The total air volume can meet the emergency ventilation requirements. The exhaust muffler 5 is installed outside the exhaust fan 4. The wind speed of the exhaust muffler is not more than 10m / s. The muffler sheet of the exhaust muffler 5 is a vertical impedance composite muffler sheet, with resistive parts 21 on both sides and a reactive part 22 in the middle; the thickness of the muffler sheet is 100-150mm, and the net distance of the muffler sheet is 100mm.

[0032] To realize intelligent control, the system also includes a PLC system. The machine room is equipped with temperature sensors, combustible gas sensors, humidity sensors, and noise sensors connected to the PLC system.

[0033] Wind speed sensors and PM2.5 sensors connected to the PLC system are installed outside the machine room.

[0034] The electric shutter 3 and the atomizing spray device 8 are both connected to the PLC system.

[0035] The control modes of the PLC system are divided into three modes: natural ventilation mode, forced ventilation mode, and emergency ventilation mode. The system operation mode will be automatically adjusted according to environmental parameters. The specific control process is as follows:

[0036] 1. The PLC control system uses the maximum or average temperature collected by multiple temperature sensors. When the maximum or average temperature is lower than a certain set temperature, the natural ventilation mode is adopted. The system affects the heat dissipation in the compressor room through the opening of the electric shutters, and uses the waste heat of the compressor to increase the temperature of the compressor room;

[0037] 2. The natural ventilation mode is divided into more than two levels. Different levels are associated with the shutter opening angle. When the indoor temperature drops by one temperature B, the system automatically rises one level. When the temperature is lower than a certain setting C, the electric shutter is completely closed. When the temperature rises, the opposite procedure is performed;

[0038] 3. When the maximum or average temperature is higher than a certain set temperature value A, the system is in forced ventilation mode. In this mode, the angle of the electric blinds is at 60°. The intensity ventilation mode is divided into more than two levels. Different levels are related to the number of exhaust fans in operation. Every time the temperature is higher than the set temperature value A by a temperature gradient D, the system automatically rises by one level. After the system is at the highest level and the temperature continues to rise by a temperature gradient E, the system automatically starts the atomizing spray device 8 to perform atomizing spray cooling; in order to prevent affecting the normal operation of indoor instruments, the atomizing spray cooling device works intermittently, and its working time is controlled by the set humidity value. It stops working when the humidity is greater than a certain set value, and runs when it is lower than a certain humidity value. The opposite procedure is executed when the temperature drops.

[0039] 4. When the combustible gas reaches the set value, the system is in emergency ventilation mode, all exhaust fans are started at the same time, and the electric shutters rotate to 90° for emergency exhaust.

[0040] 5. When the outdoor wind speed reaches above 10m / s and PM2.5 reaches above 100μg, the control system automatically closes the shutters to prevent a large amount of sand and dust from entering the compressor room.

[0041] 6. When the noise value collected by the noise sensor exceeds or falls below the set value B, the system will sound an alarm, indicating that the equipment may be abnormal and needs to be inspected.

[0042] This system can effectively reduce the indoor and outdoor noise of the compressor room. It is easy to construct and install and can meet the ventilation and heat dissipation requirements. The ventilation and heat dissipation adopts automatic control to reduce the labor intensity of the station staff and save energy consumption.

[0043] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0045] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A noise reduction and ventilation system for a compressor room of a natural gas gathering station, characterized in that: The side wall of the machine room is provided with a sound-absorbing wall, the air inlet window of the machine room is provided with an air inlet muffler, the exhaust fan of the machine room is provided with an exhaust muffler outside, an atomizing spray device is provided on the ceiling of the machine room, and the entrance and exit of the machine room are both soundproof doors.

2. A natural gas gathering station compressor room noise reduction and ventilation system according to claim 1, characterized in that: An electric shutter is also arranged inside the outer side of the air inlet muffler.

3. A natural gas gathering station compressor room noise reduction and ventilation system according to claim 2, characterized in that: The opening angle range of the electric shutter is 0°-90°.

4. A natural gas gathering station compressor room noise reduction and ventilation system according to claim 1, characterized in that: The sound-absorbing wall includes a square tube fixedly connected to the C-shaped steel of the machine room wall, an aluminum perforated plate is arranged on the outside of the square tube, a sound-absorbing cavity is formed between the machine room wall and the aluminum perforated plate, and glass fiber wool is filled between the square tube and the aluminum perforated plate, and the glass fiber wool is wrapped with glass fiber cloth.

5. A natural gas gathering station compressor room noise reduction and ventilation system according to claim 1, characterized in that: The air inlet muffler and the exhaust muffler are both composed of vertical impedance composite muffler sheets; The vertical impedance composite sound-absorbing sheet comprises resistive parts located at two sides and a reactive part located in the middle.

6. A natural gas gathering station compressor room noise reduction and ventilation system according to claim 1, characterized in that: It also includes a PLC system, wherein the machine room is provided with a temperature sensor, a combustible gas sensor, a humidity sensor, and a noise sensor connected to the PLC system; A wind speed sensor and a PM2.5 sensor connected to the PLC system are arranged outside the machine room.

7. A natural gas gathering station compressor room noise reduction and ventilation system according to claim 2, characterized in that: The electric shutters and the atomizing spray device are both connected to the PLC system.

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