Bidirectional air supply type tunnel ventilator and tunnel ventilation system

Abstract

The utility model provides a bidirectional air supply type tunnel ventilator and a tunnel ventilation system, and relates to the technical field of tunnel ventilation. The two-way air supply type tunnel ventilator comprises a centrifugal fan, an air outlet pipeline, a three-way pipeline and a valve assembly. The centrifugal fan is provided with an air outlet end; the number of the air outlet pipelines is two, and the two air outlet pipelines extend in the first direction and are arranged in the first direction. The three-way pipeline is respectively connected with the air outlet end and the two air outlet pipelines; the valve assembly is arranged on the three-way pipeline and used for enabling the air outlet end to communicate with any air outlet pipeline through the three-way pipeline. According to the bidirectional air supply type tunnel ventilator, bidirectional air supply can be achieved, the specific air supply direction can be selected according to needs, limitation is smaller, and applicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel ventilation technical field especially relates to a two -way air supply formula tunnel ventilation machine and tunnel ventilation system. BACKGROUND

[0002] Tunnel ventilation refers to the air exchange method for tunnel to create the required air environment, and its purpose is to speed up the air exchange inside and outside the tunnel hole, and improve the air quality in the hole. When the axial flow fan is used as the tunnel ventilation fan, there is often a problem of insufficient air pressure, which is specifically manifested as short flow distance of airflow after leaving the outlet of the axial flow fan, resulting in poor ventilation effect.

[0003] To this end, the centrifugal fan is used in cooperation with the ventilation pipeline, which can better solve the problem of insufficient air pressure. However, due to the single air outlet direction of the centrifugal fan, the ventilation pipeline can only supply air in one direction, which cannot meet the demand of two-way air supply under specific working conditions, and has great limitations. UTILITY MODEL CONTENT

[0004] In order to solve the problems in the prior art, one of the purposes of the utility model is to provide a two-way air supply type tunnel ventilation machine.

[0005] The utility model provides the following technical scheme:

[0006] A two-way air supply type tunnel ventilation machine, comprising:

[0007] A centrifugal fan has an air outlet end;

[0008] Two air outlet pipelines are provided, and the two air outlet pipelines are arranged along a first direction and arranged along the first direction;

[0009] A three-way pipeline is connected to the air outlet end and the two air outlet pipelines; and

[0010] A valve assembly is arranged in the three-way pipeline, and the valve assembly is used to communicate the air outlet end with any one of the air outlet pipelines through the three-way pipeline.

[0011] As a further optional scheme of the two-way air supply type tunnel ventilation machine, the valve assembly comprises a turnover piece and a rotary driving piece, the turnover piece is rotationally arranged in the three-way pipeline, and the driving end of the rotary driving piece is connected with the turnover piece.

[0012] As a further optional scheme of the two-way air supply type tunnel ventilation machine, the valve assembly further comprises a flow guide piece, the flow guide piece is arranged in the three-way pipeline, the flow guide piece has a top portion arranged towards the air outlet end and flow guide surfaces extending from the top portion to both sides respectively, and the flow guide surfaces are arranged towards the air outlet pipeline.

[0013] The turnover part is rotationally connected with the top part.

[0014] As a further optional solution to the bidirectional air supply type tunnel ventilator, the flow guide surface is a concave arc surface.

[0015] As a further optional solution to the bidirectional air supply type tunnel ventilator, the valve assembly comprises a sliding part and a linear driving part, the sliding part is arranged in the three-way pipeline along the direction, and the driving end of the linear driving part is connected with the sliding part.

[0016] As a further optional solution to the bidirectional air supply type tunnel ventilator, the sliding part is provided with a flow guide part at each end along the sliding direction.

[0017] As a further optional solution to the bidirectional air supply type tunnel ventilator, the air outlet pipeline comprises an inner shell and an outer shell, the inner shell is arranged in the first direction, the outer shell is sleeved on the inner shell, an air outlet channel is formed between the outer shell and the inner shell, and the air outlet channel is communicated with the three-way pipeline.

[0018] As a further optional solution to the bidirectional air supply type tunnel ventilator, the centrifugal fan comprises a driving motor, an impeller and a volute;

[0019] The impeller is sleeved on the rotating shaft of the driving motor and is fixedly connected with the rotating shaft, and four impellers are arranged along the axis direction of the rotating shaft.

[0020] The volute is correspondingly arranged with the impeller, the volute is sleeved on the corresponding impeller, and the volute has the air outlet end.

[0021] The three-way pipeline is correspondingly arranged with the volute, and each three-way pipeline is arranged along the circumferential direction of the air outlet channel and close to one end of the air outlet pipeline.

[0022] As a further optional solution to the bidirectional air supply type tunnel ventilator, the air outlet pipeline further comprises a flow guide vane, the flow guide vane is arranged in the air outlet channel, and the flow guide vane is arranged in a spiral shape around the axis of the inner shell.

[0023] Another object of the present application is to provide a tunnel ventilation system.

[0024] The present application provides the following technical scheme:

[0025] A tunnel ventilation system comprises the bidirectional air supply type tunnel ventilator.

[0026] The embodiment of the utility model has the following beneficial effects:

[0027] In the above-mentioned bidirectional air supply type tunnel ventilator, the two air outlet pipelines arranged along the first direction are arranged along the first direction and connected with the air outlet end of the centrifugal fan through the three-way pipeline.

[0028] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0030] Figure 1 The whole structure schematic diagram of a bidirectional air supply type tunnel ventilator provided by the embodiment of the utility model is shown;

[0031] Figure 2 The structure schematic diagram of the air outlet pipeline in the bidirectional air supply type tunnel ventilator provided by the embodiment of the utility model is shown;

[0032] Figure 3 The connection relationship schematic diagram of the centrifugal fan and the three-way pipeline in the bidirectional air supply type tunnel ventilator provided by the embodiment of the utility model is shown;

[0033] Figure 4 The internal structure schematic diagram of the three-way pipeline in the bidirectional air supply type tunnel ventilator provided by the embodiment of the utility model is shown;

[0034] Figure 5 The internal structure schematic diagram of the three-way pipeline in the bidirectional air supply type tunnel ventilator provided by another embodiment of the utility model is shown;

[0035] Figure 6The utility model discloses a three-way pipeline's internal structure schematic diagram of a bidirectional air supply type tunnel ventilator.

[0036] Main element symbol explanation:

[0037] 100 - centrifugal fan; 110 - driving motor; 111 - rotating shaft; 120 - impeller; 130 - volute; 131 - air outlet end; 200 - air outlet pipeline; 210 - inner shell; 220 - outer shell; 230 - guide vane; 300 - three-way pipeline; 400 - valve assembly; 410 - turnover piece; 420 - guide piece; 421 - guide surface; 430 - sliding piece; 431 - guide part. DETAILED DESCRIPTION

[0038] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as limiting the utility model.

[0039] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are used for explanation purposes only.

[0040] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or can be detachable connection, or can be integrated;Can be mechanical connection, or can be electrical connection;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is used only for the purpose of describing particular embodiments and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] Embodiments

[0044] Referring to Figure 1 The embodiment provides a bidirectional air supply type tunnel ventilator which is applied to a tunnel ventilation system. The bidirectional air supply type tunnel ventilator comprises a centrifugal fan 100, air outlet pipelines 200, a three-way pipeline 300 and a valve assembly 400.

[0045] The centrifugal fan 100 has an air outlet end 131 (see Figure 3 ).

[0046] The air outlet pipelines 200 are provided in two, and the two air outlet pipelines 200 are arranged along a first direction.

[0047] Correspondingly, the three-way pipeline 300 is connected with the air outlet end 131 and the two air outlet pipelines 200 respectively.

[0048] In addition, the valve assembly 400 is arranged in the three-way pipeline 300, and the valve assembly 400 is used for enabling the air outlet end 131 to communicate with any one of the air outlet pipelines 200 through the three-way pipeline 300.

[0049] In the bidirectional air supply type tunnel ventilator, the two air outlet pipelines 200 arranged along the first direction are arranged along the first direction and connected with the air outlet end 131 of the centrifugal fan 100 through the three-way pipeline 300. In use, the valve assembly 400 can enable the air outlet end 131 to communicate with one of the air outlet pipelines 200 through the three-way pipeline 300, and air flows in the air outlet pipeline 200 along the first direction under the driving of the centrifugal fan 100; or the valve assembly 400 can also enable the air outlet end 131 to communicate with the other air outlet pipeline 200 through the three-way pipeline 300, and air flows in the other air outlet pipeline 200 along the opposite direction under the driving of the centrifugal fan 100.

[0050] Therefore, the bidirectional air supply type tunnel ventilator can realize bidirectional air supply, so that the specific air supply direction can be selected according to the needs, and the applicability is strong.

[0051] Referring to Figure 2In some embodiments, the air outlet pipeline 200 comprises an inner shell 210 and an outer shell 220. The inner shell 210 extends along a first direction, and the outer shell 220 is sleeved on the inner shell 210. An air outlet channel is formed between the outer shell 220 and the inner shell 210, and the air outlet channel is in communication with the three-way pipeline 300.

[0052] In use, the centrifugal fan 100 delivers air to the air outlet channel through the three-way pipeline 300, so that the air flows in the air outlet channel along the first direction.

[0053] Further, the air outlet pipeline 200 further comprises a guide vane 230. The guide vane 230 is arranged in the air outlet channel, and the guide vane 230 is arranged in a spiral shape around the axis of the inner shell 210.

[0054] It can be understood that the air flowing in the air outlet channel is guided by the guide vane 230 and flows in a spiral shape. Thus, the air flow is not easy to be disturbed after leaving the air outlet pipeline 200, and can flow forward for a longer distance, and the ventilation effect is better.

[0055] Please refer to Figure 3 In some embodiments, the centrifugal fan 100 comprises a driving motor 110, an impeller 120 and a volute 130.

[0056] The impeller 120 is sleeved on the rotating shaft 111 of the driving motor 110 and is fixedly connected with the rotating shaft 111. The impeller 120 is provided with four impellers 120 arranged along the axis direction of the rotating shaft 111.

[0057] The volute 130 is arranged correspondingly to the impeller 120, and the volute 130 is sleeved on the corresponding impeller 120. The volute 130 has an air outlet end 131.

[0058] The three-way pipeline 300 is arranged correspondingly to the volute 130, and each three-way pipeline 300 is arranged along the circumferential direction of the air outlet channel near one end of the air outlet pipeline 200.

[0059] In use, the rotating shaft 111 of the driving motor 110 drives the impeller 120 to rotate at high speed, and cooperates with the fixed volute 130 to discharge air from the air outlet end 131. The air discharged from the air outlet end 131 further flows into the air outlet channel through the three-way pipeline 300.

[0060] It can be understood that the valve assembly 400 arranged on the three-way pipeline 300 controls each three-way pipeline 300 to be in communication with any one of the air outlet pipelines 200 at the same time.

[0061] Specifically, the rotating shaft 111 extends in the first direction and penetrates the two ends of the driving motor 110. Two impellers 120 are sleeved on one end of the rotating shaft 111, and the other two impellers 120 are sleeved on the other end of the rotating shaft 111. In addition, the two impellers 120 sleeved on the same end of the rotating shaft 111 are arranged opposite to each other, and the air outlet ends 131 of the corresponding two volutes 130 are also arranged opposite to each other and do not interfere with each other.

[0062] In addition, the guide vanes 230 are provided with four, and the air outlet channel is divided into four spiral sub-channels in the circumferential direction. The air outlet ends 131 of the four volutes 130 are respectively communicated with one of the sub-channels through the corresponding three-way pipe 300.

[0063] Please refer to Figure 4 In some embodiments, the valve assembly 400 includes a turnover piece 410 and a rotary driving piece (not shown in the figure). The turnover piece 410 is rotationally arranged in the three-way pipe 300, and the driving end of the rotary driving piece is connected with the turnover piece 410.

[0064] In use, the rotary driving piece drives the turnover piece 410 to turn over, and the pipe section of the three-way pipe 300 is shielded from being communicated to one of the air outlet pipes 200, so that the air outlet end 131 is only communicated to the other air outlet pipe 200 through the three-way pipe 300.

[0065] It can be understood that one turnover piece 410 is arranged in each three-way pipe 300, and the turnover pieces 410 in the respective three-way pipes 300 are connected with the driving end of the same rotary driving piece and synchronously turn over under the driving of the rotary driving piece.

[0066] In the present embodiment, the turnover piece 410 adopts a baffle, and the rotary driving piece adopts a servo motor.

[0067] Please refer to Figure 5 Further, the valve assembly 400 further includes a guide piece 420 arranged in the three-way pipe 300. The guide piece 420 has a top portion arranged towards the air outlet end 131 and guide surfaces 421 extending from the top portion to both sides respectively, and the guide surfaces 421 are arranged towards the air outlet pipe 200.

[0068] Correspondingly, the turnover piece 410 is rotationally connected with the top portion.

[0069] In use, the air discharged from the air outlet end 131 enters the three-way pipe 300, contacts the top portion of the guide piece 420 after flowing through the turnover piece 410, and then flows along the guide surfaces 421 towards the air outlet pipe 200. In this process, the guide surfaces 421 can guide the air flow to change the flow direction smoothly and reduce the flow rate loss in the air flow turning process.

[0070] Further, the guide surface 421 is an arc-shaped surface concaved inward, and the effect of guiding the airflow to change the flow direction is best.

[0071] Please refer to Figure 6 In some embodiments, the valve assembly 400 comprises a slider 430 and a linear drive. The slider 430 is arranged to slide in the direction inside the tee pipe 300, and the driving end of the linear drive is connected with the slider 430.

[0072] In use, the linear drive drives the slider 430 to slide, and the tee pipe 300 is blocked to communicate with one of the air outlet pipes 200, so that the air outlet end 131 is communicated with the other air outlet pipe 200 through the tee pipe 300.

[0073] In this embodiment, the slider 430 is a piston, and the linear drive is a pneumatic cylinder or an electric cylinder.

[0074] Further, the slider 430 is provided with a guide part 431 at each end along the sliding direction.

[0075] When the slider 430 blocks the tee pipe 300 to communicate with one of the air outlet pipes 200, the guide part 431 at one end of the slider 430 facing the other air outlet pipe 200 is exposed inside the tee pipe 300, which can also guide the airflow to change the flow direction smoothly and reduce the loss of flow rate in the airflow turning process.

[0076] In summary, when the above-mentioned bidirectional air supply type tunnel ventilator is used, the valve assembly 400 can make the air outlet end 131 communicated with one of the air outlet pipes 200 through the tee pipe 300, and the air flows in the first direction in the air outlet pipe 200 under the driving of the centrifugal fan 100. Alternatively, the valve assembly 400 can also make the air outlet end 131 communicated with the other air outlet pipe 200 through the tee pipe 300, and the air flows in the opposite direction in the other air outlet pipe 200 under the driving of the centrifugal fan 100. Therefore, the above-mentioned bidirectional air supply type tunnel ventilator can realize bidirectional air supply, so as to select a specific air supply direction as needed, which has less limitation and strong applicability.

[0077] The embodiment also provides a tunnel ventilation system comprising the above-mentioned bidirectional air supply type tunnel ventilator.

[0078] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0079] It should be noted that like reference numerals and letters refer to like items throughout the drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0080] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A bidirectional air supply type tunnel ventilator, characterized by, The centrifugal fan comprises an air outlet end; Two air outlet pipes are arranged along a first direction and arranged in the first direction; A three-way pipe is connected to the air outlet end and the two air outlet pipes; A valve assembly is arranged in the three-way pipe, and the valve assembly is used to connect the air outlet end and any one of the air outlet pipes through the three-way pipe. The valve assembly comprises a rotating member and a rotating driving member, the rotating member is arranged in the three-way pipe, and the driving end of the rotating driving member is connected to the rotating member. The valve assembly further comprises a flow guide member, the flow guide member is arranged in the three-way pipe, the flow guide member has a top portion arranged towards the air outlet end and two flow guide surfaces extending from the top portion to two sides respectively, and the flow guide surfaces are arranged towards the air outlet pipes; 2. The reversible air supply type tunnel ventilator according to claim 1, characterized by The rotating member is connected to the top portion.

3. The reversible air supply tunnel ventilator according to claim 2, characterized in that The flow guide surfaces are concave arc surfaces. The valve assembly comprises a sliding member and a linear driving member, the sliding member is arranged in the three-way pipe along the direction, and the driving end of the linear driving member is connected to the sliding member.

4. The reversible air supply tunnel ventilator according to claim 3, characterized in that The sliding member is provided with a flow guide portion at each end along the sliding direction.

5. The reversible air supply tunnel ventilator of claim 1, wherein, The air outlet pipe comprises an inner shell and an outer shell, the inner shell is arranged along the first direction, the outer shell is sleeved on the inner shell, an air outlet channel is formed between the outer shell and the inner shell, and the air outlet channel is connected to the three-way pipe.

6. The reversible air supply tunnel ventilator of claim 5, wherein, The centrifugal fan comprises a driving motor, an impeller and a volute; 7. The reversible air supply tunnel ventilator according to any one of claims 1-6, characterized in that, The impeller is sleeved on the rotating shaft of the driving motor and fixedly connected to the rotating shaft, and four impellers are arranged along the axis direction of the rotating shaft; 8. The reversible air supply tunnel ventilator of claim 7, wherein, The volute is arranged corresponding to the impeller, the volute is sleeved on the corresponding impeller, and the volute has the air outlet end; The three-way pipe is arranged corresponding to the volute, and each end of the three-way pipe close to the air outlet pipe is arranged along the circumferential direction of the air outlet channel. The air outlet pipe further comprises a flow guide vane, the flow guide vane is arranged in the air outlet channel, and the flow guide vane is arranged in a spiral shape around the axis of the inner shell. The bidirectional air supply type tunnel ventilator comprises the bidirectional air supply type tunnel ventilator according to any one of claims 1-9.

9. The reversible air supply tunnel ventilator of claim 7, wherein, ​ 10. A tunnel ventilation system, characterized in that ​

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