Sliding wellhead protection system with ventilation

Abstract

The application provides a sliding wellhead protection system with ventilation function, which comprises a protection cover and a base. The protection cover comprises a protection cover top ring and a protection cover bottom ring. An exhaust unit is arranged in the protection cover top ring. A protection cover support column is connected with the protection cover top ring at the upper end and connected with the protection cover bottom ring at the lower end. The protection cover support columns are connected by a protection cover connecting rod. The front end and the rear end of the protection cover bottom ring are respectively fixed with protection cover wheel sets. The base comprises a base top ring embedded in the ground outside the shaft entrance and a base bottom ring arranged in the shaft and corresponding with the outer diameter of the shaft. A jet fan unit for generating rotating airflow is arranged at the lower side of the protection cover. The inlet of the jet fan is connected with an air inlet penetrating through the protection cover through a flexible air pipe. The protection cover is fixed by the buckle. The flying stones generated during blasting construction are blocked by the protection net. The dust can be quickly discharged by the jet fan unit and the exhaust fan, so that the construction progress is accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shaft construction, in particular to a sliding type shaft mouth protection system with air exchange function. BACKGROUND

[0002] With the development of long and large highway tunnels in China, building a shaft in the tunnel to send, discharge or centrally send and discharge air can effectively reduce the pollutant concentration after long distance ventilation, so that the sectional ventilation of the shaft becomes the choice of more and more long and large highway tunnels. In the construction of the shaft, in order to prevent accidents such as falling of personnel, falling of stone and other sundries into the shaft, and damage to equipment, it is necessary to set up a shaft cover to partially or completely close the shaft mouth. The common method is to use a reinforcement mesh to cover. The fixing method of the shaft cover as a shaft mouth protection device is not firm, and is easy to move due to construction disturbance. In addition, the shaft is often excavated by blasting method, and when the working face is close to the shaft mouth, the blasting shock flow is large. In order to avoid damage to the sealing disc, the sealing disc is usually opened during blasting, and the shock blasting is used to control the flying stone distance, but there is still a risk of blasting flying stone injury and damage to equipment. In addition, a large amount of dust and toxic and harmful gases will be generated in the shaft during the blasting of the working face. The existing technology lacks a ventilation device, and a ventilation device needs to be purchased separately.

[0003] For example, Chinese utility model application No. CN202120801743.4 discloses a shaft mouth protection fence, which comprises a protection cover for covering the shaft mouth, and a plurality of positioning units for being uniformly distributed around the shaft axis. The positioning unit comprises a connecting assembly, a pressing member and a driving assembly. The connecting assembly is connected with the protection cover and has a movable block capable of lifting. The pressing member is located in the protection cover and can move in the horizontal direction. The driving assembly is arranged on the movable block and connected with the pressing member, and is used for driving the pressing member to move in the horizontal direction. The lifting of the movable block can realize the entry or exit of the pressing member into or out of the shaft mouth. When the pressing member is located in the shaft mouth, the horizontal movement of the pressing member can press the inner wall of the shaft mouth.

[0004] The above existing technology still has the following technical problems: the protection cover is not firmly fixed and is easy to move in vibration; the flying stones generated during blasting construction cannot be blocked, which can easily cause injury to workers; and there is a lack of ventilation device, and it takes a long time to wait for dust to naturally disperse, which affects the construction progress. SUMMARY

[0005] To solve the above problems, the present application provides a sliding type shaft mouth protection system with air exchange function.

[0006] The ventilation function sliding wellhead protection system comprises a protection cover and a base, the protection cover comprises a protection cover top ring and a protection cover bottom ring corresponding to the size of the shaft entrance, an exhaust unit for generating upward airflow is arranged in the protection cover top ring, a plurality of protection cover support columns are uniformly arranged between the protection cover top ring and the protection cover bottom ring, the upper end of the protection cover support column is connected with the protection cover top ring, the lower end is connected with the protection cover bottom ring, the protection cover support columns are connected by the protection cover connecting rods, the outer side of the protection cover support column is covered with a protection net, and the front end and the rear end of the protection cover bottom ring are respectively fixed with protection cover wheel sets; the base comprises a base top ring embedded in the ground outside the shaft entrance and a base bottom ring arranged in the well and corresponding to the inner diameter of the shaft, the base top ring and the base bottom ring are connected by a plurality of vertically arranged base connecting columns, and the base track used in cooperation with the protection cover wheel set is laid on the ground and fixedly connected with the upper surface of the base top ring.

[0007] A jet fan unit for generating rotating airflow is further arranged on the lower side of the protection cover, the jet fan unit comprises a jet fan base suspended on the lower side of the protection cover through a sling at both ends, the lower end of the sling is connected with one end of the jet fan base, the upper end of the sling is connected with a winch arranged on the protection cover through a pulley, the first jet fan and the second jet fan are arranged in parallel and reversely at the left end and the right end of the top of the jet fan base, and the inlet of the first jet fan and the inlet of the second jet fan are connected with the air inlet penetrating through the protection cover through a flexible air pipe.

[0008] Further, the exhaust unit comprises an exhaust unit top plate, an exhaust hole arranged on the exhaust unit top plate, an exhaust unit top protection net arranged in the exhaust hole, an exhaust unit hinge for rotatingly connecting the protection cover and the exhaust unit fixed to the left end of the top of the exhaust unit top plate, an exhaust unit handle fixed to the right end of the top of the exhaust unit top plate, an exhaust fan connected to the bottom of the exhaust unit top plate, and an exhaust fan protection cover fixed to the bottom of the exhaust fan.

[0009] Further, the flexible air pipe is slidably connected with the sling through a plurality of hanging rings arranged on one side of the flexible air pipe.

[0010] Further, the flexible air pipe is a canvas soft connection air pipe.

[0011] Further, the air volume of the first jet fan is 0.15-0.3 times the air volume of the exhaust fan.

[0012] Further, the air volume of the second jet fan is 0.15-0.3 times the air volume of the exhaust fan.

[0013] Further, a plurality of buckle holes for fixing the protective cover are arranged on the base track.

[0014] Further, buckles for cooperating with the buckle holes are arranged outside the protective cover wheel set.

[0015] Further, a spray head for dust removal is arranged at the bottom of the protective cover.

[0016] The advantages and effects of the sliding wellhead protection system with ventilation function are that the protective cover is fixed by the buckles, the flying stones generated during blasting construction are blocked by the protective net, and the dust can be quickly discharged by the jet fan unit and the exhaust fan, thereby accelerating the construction progress. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic diagram of the cross-sectional structure of the sliding wellhead protection system with ventilation function;

[0018] Figure 2 FIG. 2 is a schematic diagram of the top view of the sliding wellhead protection system with ventilation function; Figure 1 FIG. 3 is a schematic diagram of the side view of the sliding wellhead protection system with ventilation function;

[0019] Figure 3 FIG. 4 is a schematic diagram of the cross-sectional structure of the sliding wellhead protection system with ventilation function; Figure 2 FIG. 5 is a schematic diagram of the cross-sectional structure of the sliding wellhead protection system with ventilation function.

[0020] In the figure, 1 is a protective cover, 1.1 is a protective cover bottom ring, 1.2 is a protective cover support column, 1.3 is a protective cover top ring, 1.4 is a protective cover connecting rod, 1.5 is a protective cover wheel set, 2 is a base, 2.1 is a base top ring, 2.2 is a base bottom ring, 2.3 is a base connecting column, 2.4 is a base track, 2.5 is a buckle hole, 3 is a jet fan unit, 3.1 is a jet fan base, 3.2 is a first jet fan, 3.3 is a second jet fan, 3.4 is a flexible air pipe, 3.5 is a sling, 3.6 is a winch, 3.7 is a pulley, 4 is an exhaust unit, 4.1 is an exhaust unit top plate, 4.2 is an exhaust hole, 4.3 is an exhaust unit hinge, 4.4 is an exhaust unit handle, 4.5 is an exhaust fan, 4.6 is an exhaust unit top protective net, 4.7 is an exhaust fan protective cover, 4.71 is an exhaust fan protective cover flange, 4.72 is an exhaust fan protective cover center plate, 4.73 is an exhaust fan protective cover connecting rod, and 4.74 is an exhaust fan protective net. DETAILED DESCRIPTION

[0021] The specific embodiment of the sliding wellhead protection system with ventilation function is described below in conjunction with the drawings.

[0022] As Figure 1As shown, the sliding wellhead protection system with ventilation function comprises a protection cover 1 and a base 2. The protection cover 1 comprises a protection cover top ring 1.3 and a protection cover bottom ring 1.1 corresponding to the size of the entrance of the shaft 5. An exhaust unit 4 for generating upward airflow is arranged in the protection cover top ring 1.3. A plurality of protection cover support columns 1.2 are uniformly arranged between the protection cover top ring 1.3 and the protection cover bottom ring 1.1. The upper end of the protection cover support column 1.2 is connected to the protection cover top ring 1.3, and the lower end is connected to the protection cover bottom ring 1.1. The protection cover support columns 1.2 are connected by protection cover connecting rods 1.4. The outer side of the protection cover support column 1.2 is covered with a protective net (not shown in the figure). The front end and the rear end of the protection cover bottom ring 1.1 are respectively fixed with protection cover wheel sets 1.5. The base 2 comprises a base top ring 2.1 embedded in the ground outside the entrance of the shaft 5 and a base bottom ring 2.2 arranged in the well and corresponding to the inner diameter of the shaft 5. The base top ring 2.1 and the base bottom ring 2.2 are connected by a plurality of vertically arranged base connecting columns 2.3. The base track 2.4 used in cooperation with the protection cover wheel set 1.5 is laid on the ground and fixedly connected to the upper surface of the base top ring 2.1.

[0023] A jet fan unit 3 for generating rotating airflow is further arranged on the lower side of the protection cover 1. The jet fan unit 3 comprises a jet fan base 3.1 suspended on the lower side of the protection cover 1 by a sling 3.5 at both ends. The lower end of the sling 3.5 is connected to one end of the jet fan base 3.1. The upper end of the sling 3.5 is connected to a winch 3.6 arranged on the protection cover 1 through a pulley 3.7. A first jet fan 3.2 and a second jet fan 3.3 are arranged in parallel and reversely at the left end and the right end of the top of the jet fan base 3.1. The inlet of the first jet fan 3.2 and the inlet of the second jet fan 3.3 are connected by a flexible air pipe 3.4 to an air inlet (not shown in the figure) penetrating through the protection cover 1.

[0024] Further, as shown in Figure 2 , Figure 3 The exhaust unit 4 comprises an exhaust unit top plate 4.1, an exhaust hole 4.2 arranged on the exhaust unit top plate 4.1, an exhaust unit top protective net 4.6 arranged in the exhaust hole 4.2, an exhaust unit hinge 4.3 for rotatingly connecting the protection cover 1 and the exhaust unit 4 fixed to the left end of the top of the exhaust unit top plate 4.1, an exhaust unit handle 4.4 fixed to the right end of the top of the exhaust unit top plate 4.1, an exhaust fan 4.5 connected to the bottom of the exhaust unit top plate 4.1, and an exhaust fan protective cover 4.7 fixed to the bottom of the exhaust fan 4.5. The exhaust fan protective cover 4.7 comprises an exhaust fan protective cover flange 4.71 connected to the bottom of the exhaust fan 4.5, an exhaust fan protective cover center plate 4.72 fixed to the middle of the exhaust fan protective cover flange 4.71 by a plurality of exhaust fan protective cover connecting rods 4.73, and an exhaust fan protective net 4.74 arranged on the top of the exhaust fan protective cover connecting rod 4.73.

[0025] Further, the flexible air pipe 3.4 is connected with the sling 3.5 through a plurality of hanging rings (not shown in the figure) arranged on one side of the flexible air pipe 3.4.

[0026] Further, the flexible air pipe 3.4 is a canvas soft connection air pipe.

[0027] Further, the air volume of the first jet fan 3.2 is 0.15-0.3 times of the air volume of the exhaust fan 4.5.

[0028] Further, the air volume of the second jet fan 3.3 is 0.15-0.3 times of the air volume of the exhaust fan 4.5.

[0029] Further, a plurality of buckle holes 2.5 for fixing the protective cover 1 are arranged on the base rail 2.4.

[0030] Further, buckles (not shown in the figure) for cooperating with the buckle holes 2.5 are arranged on the outer side of the protective cover wheel set 1.5.

[0031] Further, a spray head (not shown in the figure) for dust removal is arranged at the bottom of the protective cover 1.

[0032] The use method of the sliding type wellhead protection system with air exchange function is briefly introduced below in combination with the accompanying drawings of the specification:

[0033] Before blasting and excavation, the protective cover 1 is pushed above the shaft 5 through the protective cover wheel set 1.5 and the base rail 2.4, and the protective cover 1 and the base rail 2.4 are connected together through the buckles arranged on the outer side of the protective cover wheel set 1.5 and the buckle holes 2.5.

[0034] After blasting and excavation, the jet fan unit 3 is placed at the bottom of the shaft 5 through the sling 3.5 and the winch 3.6, and the first jet fan 3.2, the second jet fan 3.3 and the exhaust fan 4.5 are started, the first jet fan 3.2 and the second jet fan 3.3 generate rotating air flow, and the exhaust fan 4.5 generates upward air flow, under the joint action of the rotating air flow and the upward air flow, a man-made tornado is formed to quickly discharge the dust in the shaft 5.

[0035] Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can modify the technical solutions recorded in the above embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the concept and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sliding wellhead protection system with ventilation function, characterized in that, The ventilation function sliding wellhead protection system comprises a protection cover (1) and a base (2), the protection cover (1) comprises a protection cover top ring (1.3) and a protection cover bottom ring (1.1) corresponding to the size of the shaft (5) entrance, the exhaust unit (4) is arranged in the protection cover top ring (1.3), a plurality of protection cover support columns (1.2) are uniformly arranged between the protection cover top ring (1.3) and the protection cover bottom ring (1.1), the upper end of the protection cover support column (1.2) is connected with the protection cover top ring (1.3), the lower end of the protection cover support column (1.2) is connected with the protection cover bottom ring (1.1), the protection cover support columns (1.2) are connected by the protection cover connecting rods (1.4), the outer side of the protection cover support column (1.2) is covered with a protection net, and the front end and the rear end of the protection cover bottom ring (1.1) are respectively fixed with protection cover wheel sets (1.5); the base (2) comprises a base top ring (2.1) embedded in the ground outside the shaft (5) entrance and a base bottom ring (2.2) arranged in the well and corresponding to the inner diameter of the shaft (5), the base top ring (2.1) and the base bottom ring (2.2) are connected by a plurality of vertically arranged base connecting columns (2.3), the base track (2.4) used in cooperation with the protection cover wheel set (1.5) is laid on the ground and fixedly connected with the upper surface of the base top ring (2.1); the jet fan unit (3) is arranged on the lower side of the protection cover (1), the jet fan unit (3) comprises a jet fan base (3.1) suspended on the lower side through hangers (3.5) at both ends, the lower end of the hanger (3.5) is connected with one end of the jet fan base (3.1), the upper end of the hanger (3.5) is connected with a winch (3.6) arranged on the protection cover (1) through a pulley (3.7), a first jet fan (3.2) and a second jet fan (3.3) are arranged at the left end and the right end of the top of the jet fan base (3.1) in parallel and reversely, and the inlet of the first jet fan (3.2) and the inlet of the second jet fan (3.3) are connected with an air inlet penetrating through the protection cover (1) through a flexible air pipe (3.4).

2. The vented sliding wellhead protection system of claim 1, wherein, The exhaust unit (4) comprises an exhaust unit top plate (4.1), an exhaust hole (4.2) arranged on the exhaust unit top plate (4.1), an exhaust unit top protection net (4.6) arranged in the exhaust hole (4.2), an exhaust unit hinge (4.3) fixed to the left end of the top of the exhaust unit top plate (4.1), an exhaust unit handle (4.4) fixed to the right end of the top of the exhaust unit top plate (4.1), an exhaust fan (4.5) connected to the bottom of the exhaust unit top plate (4.1), and an exhaust fan protection cover (4.7) fixed to the bottom of the exhaust fan (4.5); the exhaust fan protection cover (4.7) comprises an exhaust fan protection cover flange (4.71) connected to the bottom of the exhaust fan (4.5), an exhaust fan protection cover center plate (4.72) fixed to the middle of the exhaust fan protection cover flange (4.71) through a plurality of exhaust fan protection cover connecting rods (4.73), and an exhaust fan protection net (4.74) arranged at the top of the exhaust fan protection cover connecting rod (4.73).

3. The vented sliding wellhead protection system of claim 1, wherein, The flexible air pipe (3.4) is slidably connected with the sling (3.5) through a plurality of hanging rings arranged on one side of the flexible air pipe (3.4).

4. The vented sliding wellhead protection system of claim 1, wherein, The flexible air pipe (3.4) is a canvas soft connection air pipe.

5. The vented sliding wellhead protection system of claim 1, wherein, The air volume of the first fluidic fan (3.2) is 0.15-0.3 times of the air volume of the exhaust fan (4.5).

6. The vented sliding wellhead protection system of claim 1, wherein, The air volume of the second fluidic fan (3.3) is 0.15-0.3 times of the air volume of the exhaust fan (4.5).

7. The vented sliding wellhead protection system of claim 1, wherein, A plurality of buckle holes (2.5) are arranged on the base rail (2.4).

8. The vented sliding wellhead protection system of claim 7, wherein, A buckle is arranged outside the protective cover wheel set (1.5).

9. The vented sliding wellhead protection system of claim 1, wherein, A spray head is arranged at the bottom of the protective cover (1).

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