CN210946882U - Utility tunnel ventilates and energy recuperation utilizes system - Google Patents

Abstract

The utility model discloses an integrated pipe gallery ventilation and energy recovery and utilization system, which comprises a ventilation system and an energy recovery system; the ventilation system comprises a comprehensive pipe gallery, an air inlet pavilion is arranged at the air inlet of the integrated pipe gallery, and the integrated pipe gallery is arranged at the air inlet of the pipe gallery. The gallery exhaust port is provided with an exhaust channel, an exhaust pavilion is arranged on the upper part of the exhaust channel, and a fan is installed in the exhaust pavilion; the energy recovery system includes a throttle valve, a user-side heat exchanger, a steering valve, and a throttle valve, which are arranged in sequence. The valve is connected with one end of the air-side heat exchanger, the air-side heat exchanger is located in the exhaust passage, the steering valve is connected with the other end of the air-side heat exchanger, and the steering valve is also connected with a compressor. The system can not only realize the ventilation and ventilation of the integrated pipe gallery, but also realize the energy recovery and utilization, which can effectively reduce the energy consumption, save the energy and improve the energy utilization rate.

Description

An integrated pipe gallery ventilation and energy recovery and utilization system

technical field

The utility model relates to the field of waste heat recovery, in particular to a system for energy recovery and utilization for ventilation of an integrated pipe gallery.

Background technique

The comprehensive pipe gallery integrates various municipal pipelines such as electricity, communication, gas, water supply, drainage, and heat, and at the same time sets up special maintenance ports, hoisting ports, drainage facilities, fire-fighting facilities, ventilation facilities and underground integration of monitoring and control systems. tunnel. At present, the construction of urban comprehensive pipe corridors in China is rapidly advancing, and some new campuses of some universities have also carried out the construction of comprehensive pipe corridors. However, the space in the integrated pipe gallery is an underground closed space with poor ventilation conditions. The long-term humid environment will cause corrosion to the equipment and pipelines in the pipe gallery, greatly shortening the service life of the pipelines and equipment. In order to ensure the normal use of various municipal pipelines in the pipe gallery in a suitable environment, it is necessary to ventilate the pipe gallery to remove the internal exhaust gas, waste heat and residual humidity. The covering soil of the comprehensive pipe gallery is generally about 2.0-2.5m. The temperature inside the comprehensive pipe gallery is constant all year round. Compared with the air temperature outside the pipe gallery, the temperature is low in summer and high in winter.

The air source heat pump uses air as the cold and heat source. This method is safe, environmentally friendly and easy to use. It has become a new type of energy-saving equipment that more and more people choose to use in recent years. However, the air source heat pump has the problems of lower energy efficiency and lower heat exchange efficiency when the outdoor temperature is higher in summer or lower in winter, resulting in insufficient cooling capacity or heat supply. For the integrated pipe gallery, a large amount of air needs to be discharged during ventilation. At present, the air discharged from the pipe gallery is directly discharged into the atmosphere, and the discharged air contains a large amount of energy, resulting in a waste of energy.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the utility model provides a system for recovering energy from the exhaust air of the integrated pipe gallery, which is reasonable in structure design, convenient in operation, and can realize both ventilation and energy recovery of the integrated pipe gallery. , in order to effectively reduce energy consumption, save energy and improve energy utilization.

In order to achieve the above object, the present utility model adopts the following technical solutions:

An integrated pipe gallery ventilation and energy recovery and utilization system, including a ventilation system and an energy recovery system;

The ventilation system includes a comprehensive pipe gallery, which is provided with an air inlet pavilion at the air inlet of the pipe gallery, and an exhaust channel is arranged at the air outlet of the pipe gallery, and the upper part of the exhaust channel is provided with an air inlet pavilion. an air-exhaust pavilion, wherein a fan is installed in the air-exhaust pavilion;

The energy recovery system includes a throttle valve, a user-side heat exchanger, and a steering valve arranged in sequence, the throttle valve is connected with one end of the air-side heat exchanger, and the air-side heat exchanger is located in the exhaust passage, The steering valve is connected to the other end of the air-side heat exchanger, and the steering valve is also connected with a compressor.

Preferably, the side of the air inlet pavilion is provided with an air inlet, and the side of the air exhaust pavilion is provided with an air outlet.

Preferably, both the air inlet and the air outlet are set as louver-type air outlets, which can effectively reduce the entry of rainwater and impurities into the integrated pipe gallery.

Preferably, the air inlet pavilion, the air exhaust pavilion and the integrated pipe gallery are set in an offset manner to increase the energy exchange area and improve the energy exchange efficiency.

Preferably, the fan is a variable frequency speed-regulated fan. When the air-conditioning equipment is running, the fan runs continuously with variable frequency and speed regulation, and the ventilation volume meets the requirements of normal ventilation times and heat exchange; when the air-conditioning equipment stops running, the fan runs intermittently and the ventilation volume meets the requirements of Normal ventilation times.

Preferably, the steering valve is a four-way steering valve with an automatic reversing function.

The beneficial effects of the present utility model:

(1) The utility model installs a fan in the exhaust pavilion, which can not only realize the ventilation in the integrated pipe gallery, but also strengthen the convective heat exchange between the air side heat exchanger and the air.

(2) The setting of the variable frequency fan can meet the different demands of energy in different seasons. It can not only assist heating or cooling in winter and summer, but also save energy in spring and autumn. The setting is personalized, easy to use, high utilization rate, energy saving and emission reduction.

(3) The air-side heat exchanger is arranged in the exhaust channel to strengthen heat exchange, increase the energy exchange area, and improve the energy exchange efficiency.

(4) The air inlet pavilion and the air exhaust pavilion are offset, which not only increases the energy exchange area, improves the energy exchange efficiency, but also solves the problem that some integrated pipe gallery tops cannot be directly set with ventilation openings.

(5) The louver-type air inlet can effectively reduce the entry of rainwater and impurities into the integrated pipe gallery.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the sectional view of the exhaust pavilion of the utility model;

In the picture: 1. Air inlet pavilion, 2. Air inlet, 3. Air inlet of pipe gallery, 4. Integrated pipe gallery, 5. Air outlet of pipe gallery, 6. Air exhaust channel, 7. Air side heat exchanger, 8. Fan, 9, exhaust booth, 10, exhaust port, 12, compressor, 13, reversing valve, 14, heat exchanger on user side, 15, throttle valve.

表示制冷模式制冷剂运动方向，

表示制热模式制冷剂运动方向，

表示压缩机运行时制冷剂运动方向。

Indicates the direction of refrigerant movement in cooling mode,

Indicates the movement direction of the refrigerant in the heating mode,

Indicates the direction of refrigerant movement when the compressor is running.

Detailed ways

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 a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work fall within the scope of protection of the present application.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Below in conjunction with Fig. 1 and Fig. 2, the utility model is described in further detail by applying principle:

When running in summer, the outdoor air temperature is higher than the original air temperature in the integrated pipe gallery 4. The outdoor air enters the air inlet pavilion 1 through the rain-proof louvered air inlet 2, and then enters the integrated pipe gallery 4 through the pipe gallery air inlet 3, and the soil passes through. The cooling energy transferred by the enclosure structure of the integrated pipe gallery 4 cools the air entering the integrated pipe gallery 4, and the cooled low-temperature air enters the exhaust channel 6 and the air-side heat exchanger 7 under the suction effect of the fan 8 ( As the high-temperature and high-pressure refrigerant vapor in the condenser) for heat exchange, the air temperature rises after absorbing heat, and then enters the exhaust pavilion 9 and is discharged through the rain-proof louver-type exhaust port 10, and the integrated pipe gallery 4 To achieve ventilation.

The refrigerant gas turns into a high temperature and high pressure liquid after releasing heat, which is depressurized from the air side heat exchanger 7 through the throttle valve 15 and becomes a low temperature and low pressure liquid. It is low-temperature and low-pressure steam, and the air-conditioning return water temperature is reduced. The low-temperature and low-pressure steam is sucked into the compressor 12 through the four-way reversing valve 13, compressed by the compressor 12, and becomes high-temperature and high-pressure steam, which enters the air-side heat exchanger 7 from the four-way reversing valve 13, and circulates through the pipe gallery again. The air cooling capacity in 4 is recovered.

In winter operation, the outdoor air temperature is lower than the original air temperature in the pipe gallery 4. The outdoor air enters the air inlet pavilion 1 through the rain-proof louver-type air inlet 2, and then enters the comprehensive pipe gallery 4 through the pipe gallery air inlet 3, and the soil passes through the comprehensive pipe The heat transmitted by the enclosure structure of the corridor 4 and the heat dissipation of the thermal pipes in the integrated pipe corridor 4 heat the air entering the pipe corridor 4, and the heated high-temperature air enters the exhaust channel 6 and the air outlet under the suction effect of the fan 8. The low-temperature and low-pressure refrigerant liquid in the air-side heat exchanger 7 (as the evaporator) conducts heat exchange, and the heat release temperature of the air decreases, and then enters the exhaust pavilion 9 and is discharged through the rain-proof louver-type exhaust port 10, and the waste heat of the air is recovered at the same time. The integrated pipe gallery 4 realizes ventilation.

After the refrigerant liquid absorbs heat, it becomes a low-temperature and low-pressure gas, which is sucked into the compressor 12 from the air-side heat exchanger 7 through the four-way steering valve 13, compressed by the compressor 12, and becomes a high-temperature and high-pressure refrigerant vapor. It is sent to the user-side heat exchanger 7 (as a condenser) to release heat and condense, and becomes a high-temperature and high-pressure liquid, which raises the temperature of the air-conditioning return water in the room and heats the room. The high-temperature and high-pressure liquid is depressurized through the throttle valve 15 and becomes a low-temperature and low-pressure liquid, and the low-temperature and low-pressure liquid is transported to the air-side heat exchanger 7 for reheating cycle, and the air energy flowing through the pipe gallery is recovered.

When energy exchange is required in summer and winter, the fan 8 runs continuously with variable frequency speed regulation, and at the same time meets the normal ventilation times of the integrated pipe gallery and the heat exchange requirements for indoor heating or cooling; when energy exchange is not required in spring and autumn, the temperature inside the integrated pipe gallery There is little difference with the outside air temperature, the fan 8 runs intermittently, and the ventilation volume can meet the normal ventilation times of the integrated pipe gallery.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, this application is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. a comprehensive pipe gallery ventilation and energy recovery and utilization system, is characterized in that, comprises ventilation system and energy recovery system; The ventilation system includes a comprehensive pipe gallery, which is provided with an air inlet pavilion at the air inlet of the pipe gallery, and an exhaust channel is arranged at the air outlet of the pipe gallery, and the upper part of the exhaust channel is provided with an air inlet pavilion. an air-exhaust pavilion, wherein a fan is installed in the air-exhaust pavilion; The energy recovery system includes a throttle valve, a user-side heat exchanger, and a steering valve arranged in sequence, the throttle valve is connected with one end of the air-side heat exchanger, and the air-side heat exchanger is located in the exhaust passage, The steering valve is connected to the other end of the air-side heat exchanger, and the steering valve is also connected with a compressor. 2 . The integrated pipe gallery ventilation and energy recovery and utilization system according to claim 1 , wherein the air inlet pavilion is provided with an air inlet on the side, and the air exhaust pavilion is provided with an air outlet on the side. 3 . 3 . The integrated pipe gallery ventilation and energy recovery and utilization system according to claim 2 , wherein the air inlet and the air outlet are both set as louver-type air inlets. 4 . 4 . The integrated pipe gallery ventilation and energy recovery and utilization system according to claim 1 , wherein the air inlet pavilion and the air exhaust pavilion and the integrated pipe gallery are set in an offset manner. 5 . 5. The integrated pipe gallery ventilation and energy recovery and utilization system according to claim 1, wherein the fan is a variable-frequency speed-regulated fan, and when the air conditioner is running, the fan operates continuously with variable-frequency speed regulation, and the ventilation volume satisfies the normal ventilation change. When the air-conditioning equipment stops running, the fan runs intermittently, and the ventilation volume meets the normal ventilation times. 6 . The integrated pipe gallery ventilation and energy recovery and utilization system according to claim 1 , wherein the steering valve is a four-way steering valve. 7 .

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