Ventilation device for pipe jacking construction

Abstract

The utility model discloses a ventilation device for pipe jacking construction. The ventilation device for pipe jacking construction comprises an air compressor, a ventilation pipeline, an air storage tank, a first branch pipeline, a first valve, a second valve and an air pressure detector. The air compressor is located on the ground; one end of the ventilation pipeline communicates with the air compressor, and the other end of the ventilation pipeline is located in the top pipe. The two ends of the first branch pipeline communicate with the ventilation pipeline and an air outlet of the air storage tank correspondingly. The first valve is mounted on the air inlet side of the joint of the ventilation pipeline and the first branch pipeline; the second valve is mounted on the first branch pipeline; the air pressure detector is installed on the ventilation pipeline. When the mains supply is cut off or the air compressor breaks down, the air pressure detector detects that the air pressure of the ventilation pipeline is reduced, the second valve is opened and closed, and the air storage tank conveys high-pressure air into the top pipe through the first branch pipeline and the ventilation pipeline, so that ventilation in the top pipe can be continued, construction can be continued, and the construction efficiency is improved. And the influence on the construction progress is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pipe jacking construction, and in particular to a ventilation device for pipe jacking construction. Background Art

[0002] Pipe jacking is a trenchless underground pipeline construction technique widely used in laying urban underground water supply and drainage pipelines, natural gas and oil pipelines, and communication cables. It can cross roads, railways, bridges, mountains, rivers, straits, and any surface buildings, and has significant economic and social benefits.

[0003] During long-distance pipe jacking, harmful gases such as methane may accumulate in the underground space, and oxygen deficiency may also occur, posing a threat to the safety of construction workers. Therefore, measures must be taken to ensure the air quality inside the pipe. Currently, during pipe jacking construction, air compressors are used to deliver air to the pipe to achieve ventilation. However, if the mains power goes out or the air compressor fails, ventilation within the pipe cannot be maintained, thus affecting construction progress. Summary of the Invention

[0004] The embodiment of the present application solves the technical problem that during the pipe jacking construction process, when the mains power is cut off or the air compressor fails, the ventilation in the pipe jacking cannot continue, thereby affecting the construction progress.

[0005] An embodiment of the present application provides a ventilation device for pipe jacking construction, comprising: an air compressor, which is located on the ground; a ventilation duct, one end of which is connected to the air compressor, and the other end of which is located inside the pipe jacking; an air storage tank; a first branch pipe, the two ends of which are respectively connected to the ventilation duct and the air outlet of the air storage tank; a first valve, which is installed on the air inlet side of the ventilation duct at the connection with the first branch pipe; a second valve, which is installed on the first branch pipe; and an air pressure detector, which is installed on the ventilation duct.

[0006] In a possible implementation, the air pressure detector is installed on the air outlet side of the ventilation duct where it is connected to the first branch duct.

[0007] In one possible implementation, the first valve and the second valve are solenoid valves; and further comprising: a controller electrically connected to the first valve, the second valve and the air pressure monitor, the controller being configured to control the first valve to close and the second valve to open when the air pressure detected by the air pressure detector continuously drops for a preset time or drops to a preset air pressure.

[0008] In a possible implementation, the ventilation device for pipe jacking construction further includes: an alarm, wherein the alarm signal is connected to the controller; when the controller closes the first valve and opens the second valve, the controller sends an alarm signal to the alarm, and the alarm issues an alarm externally.

[0009] In one possible implementation, the ventilation device for pipe jacking construction also includes: a relay, wherein the two control terminals of the relay are electrically connected to the controller, and the two power terminals of the relay are respectively connected to the mains and the air compressor; wherein, when the controller closes the first valve and opens the second valve, the controller controls the relay to disconnect.

[0010] In a possible implementation, the ventilation device for pipe jacking construction further includes a muffler installed in the ventilation duct.

[0011] In a possible implementation, the ventilation device for pipe jacking construction further includes a manual air valve installed at the end of the ventilation duct located inside the pipe jacking.

[0012] In a possible implementation, the ventilation device for pipe jacking construction also includes: a second branch pipe, the two ends of which are respectively connected to the inlet of the air compressor and the air tank; and a third valve, which is installed on the second branch pipe.

[0013] The technical solutions provided in the embodiments of this application have at least the following technical effects:

[0014] The embodiment of the present application provides a ventilation device for pipe jacking construction, which includes an air compressor, a ventilation duct, an air storage tank, a first branch pipe, a first valve, a second valve, and an air pressure detector. When the mains power is normally supplied and the air compressor is operating normally, the first valve is opened and the second valve is closed, and the air compressor compresses the air and then delivers it to the pipe jack through the ventilation duct; when the mains power is cut off or the air compressor fails, the air pressure detector detects a drop in air pressure in the ventilation duct, opens and closes the second valve, and the air storage tank delivers high-pressure air to the pipe jack through the first branch pipe and the ventilation duct, thereby ensuring that the pipe jack can continue to be ventilated, allowing construction to continue and reducing the impact on the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A schematic diagram of the structure of a ventilation device for pipe jacking construction provided in an embodiment of the present application;

[0017] Figure 2 Schematic diagram of the ventilation device for pipe jacking construction provided in an embodiment of the present application installed at a construction site.

[0018] Description of reference numerals:

[0019] 10-air compressor; 12-ventilation duct; 14-first valve; 16-air pressure detector; 18-muffler; 20-manual air valve; 22-air storage tank; 24-first branch pipeline; 26-second valve; 28-second branch pipeline; 30-third valve; 32-controller; 34-alarm; 36-relay; 38-working well. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "inside" and "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and does 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 present application. The terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0022] The embodiment of the present application provides a ventilation device for pipe jacking construction, such as Figure 1 and Figure 2 As shown, the ventilation device for the pipe jacking construction includes an air compressor 10, a ventilation pipe 12, an air storage tank 22, a first branch pipe 24, a first valve 14, a second valve 26 and an air pressure detector 16.

[0023] The air compressor 10 is located on the ground and is connected to the mains electricity. When the mains electricity is normally supplied and the air compressor 10 works normally, the air compressor 10 compresses the air and transmits it outward.

[0024] One end of the ventilation duct 12 is connected to the air compressor 10, and the other end of the ventilation duct 12 is located inside the top pipe. The ventilation duct 12 is used to deliver compressed air to the top pipe. Specifically, Figure 2 As shown, one end of the ventilation duct 12 is located on the ground and is connected to the air compressor 10; the other end of the ventilation duct 12 passes through the working well 38 and enters the interior of the top pipe.

[0025] The air storage tank 22 is used to store compressed air. Both ends of the first branch pipe 24 are connected to the ventilation pipe 12 and the air outlet of the air storage tank 22 respectively.

[0026] The air pressure detector is installed in the ventilation duct 12 to detect the air pressure in the ventilation duct 12. When the air pressure drops continuously or suddenly, it can be confirmed that the mains power is off or the air compressor 10 has failed. For example, the air pressure detector can be a barometer, an air pressure sensor, etc.

[0027] First valve 14 is installed on the air inlet side of ventilation duct 12 at its connection with first branch duct 24, and second valve 26 is installed in first branch duct 24. When the utility power is supplied normally and air compressor 10 is functioning normally, first valve 14 is opened and second valve 26 is closed. Air compressor 10 compresses air and delivers it into the top pipe through ventilation duct 12. When the utility power is cut off or air compressor 10 malfunctions, air pressure detector 16 detects a drop in air pressure in ventilation duct 12, opens and closes second valve 26, and air storage tank 22 delivers high-pressure air into the top pipe through first branch duct 24 and ventilation duct 12.

[0028] The ventilation device for the jacking construction can deliver compressed air to the jacking pipe through the air tank 22 when the mains power is cut off or the air compressor 10 fails, ensuring that the jacking pipe can continue to be ventilated, allowing the construction to continue and reducing the impact of the mains power outage or the failure of the air compressor 10 on the construction progress.

[0029] In addition, when the mains power is cut off, the construction workers can prepare a small diesel generator while the gas tank 22 is delivering compressed air into the top pipe, connect the small diesel engine to the air compressor 10, and power the air compressor 10. After the gas tank 22 delivers compressed air into the top pipe, the air pressure in the ventilation duct 12 drops to a preset value, and then the air compressor 10 is replaced and the compressed air is continued to be delivered into the top pipe. Similarly, when the air compressor 10 fails, the construction workers can prepare a spare air compressor while the gas tank 22 is delivering compressed air into the top pipe, connect the spare air compressor to the mains power, and connect one end of the ventilation duct to the air outlet of the spare air compressor. After the gas tank 22 delivers compressed air into the top pipe, the air pressure in the ventilation duct 12 drops to a preset value, and then the spare air compressor is replaced and the compressed air is continued to be delivered into the top pipe.

[0030] like Figure 1 As shown, the air pressure detector 16 is installed on the air outlet side of the ventilation duct 12 at the connection with the first branch duct 24. When the air compressor 10 and the air storage tank 22 deliver compressed air into the top pipe, the air pressure detector 16 can detect the air pressure in the ventilation duct 12, thereby enabling the air pressure monitor to determine whether the mains power is off or whether the air compressor 10 has malfunctioned, and whether there is sufficient compressed air remaining in the air storage tank 22.

[0031] like Figure 1 As shown, first valve 14 and second valve 26 are solenoid valves. The ventilation device for pipe jacking construction also includes a controller 32. Controller 32 is electrically connected to first valve 14, second valve 26, and the air pressure monitor. Controller 32 is configured to control first valve 14 to close and second valve 26 to open when the air pressure detected by air pressure detector 16 decreases continuously for a preset time or reaches a preset pressure. For example, the preset time is 2 minutes.

[0032] During pipe jacking, controller 32 can determine whether the mains power is off or the air compressor 10 is faulty based on the pressure monitor's readings, and automatically and quickly close first valve 14 and second valve 26. Furthermore, this ventilation system for pipe jacking eliminates the need for construction workers to monitor pressure detector 16 in real time or to manually operate first valve 14 and second valve 26, saving manpower during construction.

[0033] Of course, in other embodiments of the present application, the first valve 14 and the second valve 26 may be manual valves, and construction personnel may manually open and close the first valve 14 and the second valve 26 by observing an air pressure detector.

[0034] Continue to refer to Figure 1The ventilation device for pipe jacking construction also includes an alarm 34, and the alarm 34 signal is connected to the controller 32; when the controller 32 closes the first valve 14 and opens the second valve 26, the controller 32 sends an alarm signal to the alarm 34, and the alarm 34 sends an alarm to the outside.

[0035] After receiving the alarm from the alarm 34, the construction personnel determine that the mains power is out or the air compressor 10 is malfunctioning. The construction personnel arrive at the location of the air compressor 10 and conduct an inspection. If the mains power is out, the construction personnel prepare a small diesel generator to power the air compressor 10. If the air compressor 10 is malfunctioning, the construction personnel prepare a spare air compressor to ventilate the interior of the pipe jacking.

[0036] The ventilation device for pipe jacking construction also includes a relay 36, the two control terminals of the relay 36 are electrically connected to the controller 32, and the two power terminals of the relay 36 are respectively connected to the mains and the air compressor 10; wherein, when the controller 32 closes the first valve 14 and opens the second valve 26, the controller 32 controls the relay 36 to disconnect.

[0037] Further, if Figure 1 As shown, the ventilation system for pipe jacking construction also includes a muffler 18, which is installed in the ventilation duct 12. Muffler 18 can reduce the noise generated by the compressed air delivered by the ventilation duct 12, thereby reducing the impact of the noise on construction workers inside the pipe jacking. Specifically, muffler 18 can be located near the end of the ventilation duct 12 located inside the pipe jacking.

[0038] Further, if Figure 1 As shown, the ventilation device for pipe jacking construction also includes a manual air valve 20, which is installed at the end of the ventilation duct 12 located inside the pipe jacking. During the construction process, if ventilation needs to be suspended or the air volume needs to be adjusted, the construction workers inside the pipe jacking can quickly control it through the manual air valve 20.

[0039] like Figure 1 and Figure 2 As shown, the ventilation device for pipe jacking construction further includes a second branch pipe 28 and a third valve 30. The two ends of the second branch pipe 28 are respectively connected to the inlet of the air compressor 10 and the air storage tank 22. The third valve 30 is installed on the second branch pipe 28.

[0040] When the air storage tank 22 needs to be inflated, the third valve 30 is opened, and the air compressor 10 is started, and the air compressor 10 delivers high-pressure air to the air storage tank 22 .

[0041] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A ventilation device for pipe jacking construction, characterized in that: include: an air compressor located on the ground; a ventilation duct, one end of which is connected to the air compressor and the other end of which is located inside the top pipe; gas tank; a first branch pipe, wherein both ends of the first branch pipe are respectively connected to the ventilation pipe and the air outlet of the air storage tank; a first valve, the first valve being installed on the air inlet side of the ventilation duct at a location where the ventilation duct is connected to the first branch duct; a second valve, the second valve being installed on the first branch pipeline; as well as An air pressure detector is installed in the ventilation duct.

2. The ventilation device for pipe jacking construction according to claim 1, characterized in that: The air pressure detector is installed on the air outlet side of the ventilation duct where it is connected to the first branch duct.

3. The ventilation device for pipe jacking construction according to claim 1 or 2, characterized in that: The first valve and the second valve are solenoid valves; Also includes: A controller is electrically connected to the first valve, the second valve and the air pressure monitor, and is configured to control the first valve to close and the second valve to open when the air pressure detected by the air pressure detector drops continuously for a preset time or drops to a preset air pressure.

4. The ventilation device for pipe jacking construction according to claim 3, characterized in that: Also includes: An alarm, wherein the alarm signal is connected to the controller; when the controller closes the first valve and opens the second valve, the controller sends an alarm signal to the alarm, and the alarm issues an alarm externally.

5. The ventilation device for pipe jacking construction according to claim 3, characterized in that: Also includes: A relay, wherein two control terminals of the relay are electrically connected to the controller, and two power terminals of the relay are respectively connected to the mains and the air compressor; When the controller closes the first valve and opens the second valve, the controller controls the relay to be disconnected.

6. The ventilation device for pipe jacking construction according to claim 1, characterized in that: Also includes: A muffler is installed in the ventilation duct.

7. The ventilation device for pipe jacking construction according to claim 6, characterized in that: Also includes: A manual air valve is installed at the end of the ventilation duct located inside the top pipe.

8. The ventilation device for pipe jacking construction according to claim 1, characterized in that: Also includes: a second branch pipeline, wherein both ends of the second branch pipeline are respectively connected to the inlet of the air compressor and the inlet of the air storage tank; as well as A third valve is installed on the second branch pipeline.

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