Ground well valve opening tool with combustible toxic gas detection function

Abstract

The utility model provides a ground well valve opening tool with combustible poisonous gas detection, which comprises a sleeve and a lifting rod arranged in the sleeve, a plurality of deflector rods are arranged at the bottom end of the lifting rod, and a limiting structure for limiting the lifting rod to rotate relative to the circumferential direction of the sleeve is arranged between the sleeve and the lifting rod. The sleeve is provided with a rotating structure and a driving structure for driving the lifting rod to move up and down, the sleeve is further rotationally provided with a winding wheel, a detection rubber pipe is wound around the winding wheel, one end opening of the detection rubber pipe is a movable end opening, and the detection rubber pipe is arranged at the bottom end of the lifting rod; and the other port is a fixed port and is connected with an inlet of a gas detection alarm fixed by the reel. Opening operation of the underground well valve outside the underground well is achieved, operation is convenient, quick opening of the underground well valve is achieved, labor intensity is relieved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of valve opening tools, in particular to a ground well valve opening tool with the function of detecting flammable and toxic gases. Background Art

[0002] Liquid chemical terminal storage facilities are equipped with firefighting manhole valves. Due to their geographical location and environmental influences, these manhole valves are prone to failure. Repairing or replacing damaged valves requires disconnecting the manhole valves upstream and downstream. According to GB30871, entering a manhole to open or close valves constitutes entering a confined space and requires a confined space work permit. Special work procedures must be followed, strictly adhering to the replacement and inspection procedures before proceeding. Furthermore, the manholes are confined, making valve opening and closing difficult. Furthermore, the terminal storage area stores hazardous chemicals, most of which have a vapor density greater than air. Leaks can easily accumulate in low-lying areas such as storm drains and manholes, posing a high operational risk. In the event of a valve leak at night, obtaining a work permit is challenging, hindering on-site response efficiency. A commonly used approach involves obtaining a confined space work permit and then manually closing the valve. This approach presents challenges such as lengthy work permit issuance, requiring multiple permits, requiring significant personnel and resources, and increasing operational risk. Utility Model Content

[0003] In view of this, the utility model aims to propose a ground well valve opening tool with flammable and toxic gas detection, so that operators can quickly and conveniently open and close the ground well valve without entering the confined space. At the same time, the toxic and flammable gas situation in the ground well can be monitored in real time when opening and closing the valve, solving the existing problems of long time for issuing work tickets for entering confined spaces, one ticket for each point, occupying a lot of personnel and resources, and high operation risks.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A ground well valve opening tool with combustible and toxic gas detection capability includes a sleeve and a lifting rod arranged therein, a plurality of shift rods are provided at the bottom end of the lifting rod, a limiting structure is provided between the sleeve and the lifting rod for limiting the rotation of the lifting rod relative to the circumferential direction of the sleeve, the sleeve is provided with a rotating structure and a driving structure for driving the lifting rod to move up and down, the sleeve is also provided with a rotating winding wheel, a detection hose is wound around the winding wheel, one port of the detection hose is a movable port, which is provided at the bottom end of the lifting rod, and the other port is a fixed port, which is connected to the inlet of the gas detection alarm fixed by the winding wheel.

[0006] Furthermore, the center hole of the sleeve is a square hole structure, the lifting rod is a square rod adapted to the square hole, and the lifting rod and the square hole are assembled to form the limiting structure.

[0007] Furthermore, the rotating structure includes a rotating rod radially arranged on the upper part of the sleeve.

[0008] Furthermore, the driving structure includes a gear that is arranged on the outside of the sleeve and rotated by a rotating shaft near the bottom of the sleeve. The sleeve has a notch corresponding to the gear, and the lifting rod is matched with a rack structure. The gear enters the sleeve through the notch and engages with the rack structure of the lifting rod.

[0009] Furthermore, a crank is correspondingly provided at one end of the rotating shaft;

[0010] The sleeve is provided with a limiting structure, which includes a limiting plate arranged on the side wall of the sleeve. The rotating shaft passes through the limiting plate. The limiting plate is tightly and evenly provided with a number of limiting screw holes around the circumference of the rotating shaft. Among them, the limiting screw hole facing the rotating shaft and close to the crank is adapted to fit the limiting bolt.

[0011] Furthermore, the winding wheel is located outside the gear and is concentrically arranged with the gear, and the winding wheel is fixedly connected to the rotating shaft.

[0012] Furthermore, a ratchet structure is provided at the bottom end of the lifting rod, the lifting rod is connected to a driving body of the ratchet structure, and the shifting rod is provided on the ratchet of the ratchet structure.

[0013] Furthermore, an anti-falling net is provided at the bottom end of the sleeve, and the anti-falling net is a circular ring net with a notch in the radial direction;

[0014] A fixing sleeve is provided at the bottom end of the sleeve, and an annular groove is provided on the outer annular surface of the fixing sleeve. A plurality of connecting rods are evenly arranged in the circumferential direction of the anti-fall net, and each connecting rod is arranged along the radial direction of the anti-fall net. A ball is provided at the inner end of the connecting rod, and the ball is slidably arranged in the annular groove, and a distance is left between each adjacent two balls.

[0015] After the anti-falling net is opened, the detection hose passes through the incision of the anti-falling net.

[0016] Compared with the prior art, the underground well valve opening tool with combustible and toxic gas detection described in the present invention has the following advantages:

[0017] (1) The utility model realizes the opening operation of the underground well valve from outside the underground well, which is convenient to operate and realizes the rapid opening of the underground well valve, reduces labor intensity, improves work efficiency, and solves the problem of the inconvenience of using existing valve opening tools in the narrow space of the underground well. At the same time, the use of the detection hose and the gas detection alarm improves the safety of valve opening.

[0018] (2) In the present invention, the winding wheel and the gear that drives the lifting rod to move up and down rotate synchronously, so that the detection hose and the lifting rod can move up and down synchronously, thereby improving the convenience of using the tool.

[0019] (3) In the present invention, the anti-fall net is opened to block the well mouth, preventing debris from falling into the well and improving the safety of the well valve opening operation.

[0020] (4) In the present invention, the use of the ratchet structure enables the lifting rod to be rotated several times without rotating the sleeve a full circle to open the well valve, thereby improving the convenience of using the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the main structure of a well valve opening tool with flammable and toxic gas detection according to an embodiment of the present utility model;

[0023] Figure 2 This is a right view of a well valve opening tool with flammable and toxic gas detection according to an embodiment of the present utility model;

[0024] Figure 3 Schematic diagram of the limiting structure in this embodiment;

[0025] Figure 4 This is a diagram of the anti-fall net in the embodiment of the present invention in a folded state;

[0026] Figure 5 This is a schematic diagram of the opening of the anti-fall net in this embodiment.

[0027] Description of reference numerals:

[0028] 1-winding reel; 101-side panel; 2-gas detection alarm; 3-sleeve; 4-anti-fall net; 41-connecting rod; 42-protective net; 43-incision; 44-adhesive tape; 5-shift lever; 6-gear; 7-rotating rod; 8-fixing sleeve; 81-ring groove; 9-ratchet structure; 91-driving body; 92-ratchet; 93-pawl; 10-lifting rod; 11-detection hose; 12-limiting plate; 121-limiting screw hole; 13-rotating shaft; 14-limiting bolt; 15-crank handle; 16-base; 17-ball bearing; 18-connecting piece; 19-cable. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] Figure 1 、 Figure 2As shown, a well valve opening tool with combustible and toxic gas detection includes a sleeve 3 and a lifting rod 10. The sleeve 3 has a square sleeve structure, that is, the inner hole of the sleeve 3 is a square hole, and the sleeve 3 is preferably square in shape. The lifting rod 10 is a square rod that adapts to the inner hole of the sleeve 3. The lifting rod 10 slides vertically through the square hole and adapts to the inner hole to form a limit structure, so that the lifting rod 10 can only move up and down axially relative to the sleeve 3, but cannot rotate relative to the circumference. In other words, the lifting rod 10 and the sleeve 3 can rotate synchronously in the circumferential direction, but cannot rotate relative to each other. A rotating rod 7 is radially provided on the upper portion of the sleeve 3. The rotating rod 7 is manually driven to rotate the sleeve 3, which drives the lifting rod 10 to rotate. Several levers 5 are set at the bottom end of the lifting rod 10 through the ratchet structure 9. The levers 5 are an odd number, such as 3 or 5. The specific number is determined according to the handwheel model of the ground well valve. The lever 5 is inserted into the handwheel of the ground well valve. The lifting rod 10 rotates, driving the lever 5 to rotate, and then driving the handwheel of the ground well valve to rotate, opening or closing the ground well valve.

[0031] The outer side of the sleeve 3 is rotated to set the rotating shaft 13 through the base 16, and the rotating shaft 13 is axially arranged with a gear 6 and a winding wheel 1 in sequence, wherein the gear 6 corresponds to the lifting rod 10, and the sleeve 3 is provided with a notch corresponding to the gear 6, and the lifting rod 10 is vertically matched with a rack structure. The inner end of the gear 6 enters the sleeve 3 through the notch and engages with the rack structure of the lifting rod 10. The rotating shaft 13 rotates, driving the gear 6 to rotate, and then driving the lifting rod 10 to move vertically up and down. The extension length of the bottom end of the lifting rod 10 is adjusted according to the depth of the ground well valve, so that the lever 5 is inserted into the handwheel of the ground well valve. At this time, the upper part of the sleeve 3 is located outside the wellhead of the ground well, so that the ground well valve can be screwed to open or close it using this tool outside the wellhead.

[0032] The winding wheel 1 is located outside the sleeve 3. The outer diameter of the winding wheel 1 corresponds to the outer diameter of the gear 6. The winding wheel 1 is wound with a detection hose 11. One end of the detection hose 11 is a movable end, which is set at the bottom end of the lifting rod 10. The other end of the detection hose 11 is a fixed end, which is connected to the inlet of the gas detection alarm 2 set on the side plate 101 of the winding wheel 1. The winding wheel 1 and the gear 6 rotate synchronously, so that the detection hose 11 can be released or wound synchronously with the lifting and lowering of the lifting rod 10. When the detection hose 11 is released, its movable end enters the underground well along with the lifting rod 10. If there is a gas leak in the underground well, the leaked gas enters the gas detection alarm 2 through the detection hose 11. When the gas detection alarm 2 detects that the gas concentration reaches the critical point set by the explosion or poisoning alarm, the gas detection alarm 2 will send an alarm signal to remind workers to take safety measures and improve work safety.

[0033] In the present invention, the ratchet structure 9 is similar to a ratchet wrench, comprising a driving body 91, and a ratchet 92 and a pawl 93 disposed within the driving body 91. The driving body 91, the pawl 93, and the ratchet 92 are assembled in a matched manner, wherein the driving body 91 is used to connect to a driving member. For example, in a conventional ratchet wrench structure, the driving body is radially connected to a holding sleeve. Rotating the holding sleeve drives the driving body 91, and the ratchet 92 is rotated unidirectionally by the action of the pawl 93. In the present invention, the driving member of the ratchet structure is a lifting rod 10. The bottom end of the lifting rod 10 is connected to the top surface of the driving element 91 through a connecting member 18. At this time, the lifting rod 10 is axially arranged relative to the driving body 91. The shifting rod 5 is fixedly connected to the ratchet 92. Rotating the lifting rod 10 drives the driving body 91 to rotate. The ratchet 92 is rotated by the action of the pawl, and then the shifting rod 5 is rotated, driving the handwheel of the ground well valve to rotate, thereby realizing the opening or closing action of the ground well valve. The function of the lifting rod 10 is similar to that of the holding sleeve. This structure is a conventional choice made by those skilled in the art to adapt to specific operating methods (such as applying power at the wellhead and realizing unidirectional rotation of the ratchet in the well in this embodiment), and will not be described in detail here.

[0034] In the present invention, a crank 15 is provided at the end of the rotating shaft 13 away from the winding reel 1. The crank 15 drives the rotating shaft 13 to rotate, and then drives the gear 6 and the winding reel 1 to rotate, so that the detection hose 11 is released or retracted simultaneously with the up and down movement of the lifting rod, that is, when the lifting rod moves downward, the detection hose 11 is released; when the lifting rod moves upward, the detection hose 11 is wound around the winding reel 1.

[0035] The sleeve 3 is provided with a limiting structure to prevent the sleeve 3 from moving downward under the action of gravity. Figure 3 As shown, the limiting structure includes a limiting plate 12, which is installed on the side wall of the sleeve 3. The rotating shaft 13 passes through the limiting plate 12. The limiting plate 12 is tightly and evenly provided with a number of limiting screw holes 121 around the circumference of the rotating shaft 13. Under the action of gravity, the sleeve 3 moves downward, facing the rotation direction of the rotating shaft 13 and close to the limiting screw hole 121 of the crank 15, which is adapted to the limiting bolt 14. The limiting bolt 14 limits the crank 15 and thus limits the rotation of the rotating shaft 13, locking the relative position of the sleeve 3 and the lifting rod 10 to prevent the sleeve from moving downward under the action of gravity after the lifting rod 10 extends to a length that meets the requirement (at this time, the lever is inserted into the handwheel of the ground well valve and is adapted to connect with the handwheel). That is, when the lifting rod 10 is adjusted to an appropriate length, that is, the lever 5 can be inserted into the handwheel of the ground well valve, the position of the sleeve 3 on the lifting rod 10 is determined by the limiting mechanism, as shown in FIG. Figure 2 As shown, the sleeve 3 is prevented from sliding downward under the action of gravity. At this time, the overall height of the tool is determined. By rotating the sleeve 3, the lifting rod 10 drives the shifting rod to rotate, thereby opening or closing the well valve.

[0036] More preferably, two limit bolts 14 may be used and arranged on the left and right sides of the sleeve 3 to prevent the rotating shaft 13 from rotating, thereby locking the relative positions of the sleeve 3 and the lifting rod 10.

[0037] like Figure 1 、 Figure 2 and Figure 5 As shown, the bottom end of the sleeve 3 is provided with an anti-fall net 4, which is a circular ring-shaped net structure with a radial cutout. A fixing sleeve 8 is provided at the bottom end of the sleeve 3, and an annular groove 81 is provided on the outer annular surface of the fixing sleeve 8. The anti-fall net 4 is evenly distributed along the circumference of the anti-fall net 4, with several connecting rods 41 arranged radially along the anti-fall net 4. The inner ends of the connecting rods 41 are provided with balls 17, which slide within the annular groove 81, with a distance between each adjacent ball 17. When the anti-fall net 4 is opened, it covers the wellhead, preventing debris from falling into the well and improving the safety of the well valve opening or closing operation. The detection hose 11 then passes through the cutout 43 of the anti-fall net 4. The anti-fall net 4 is provided with adhesive tape 44 on the cutout 43, which bonds the two ends of the cutout of the anti-fall net 4 together. After the operation is completed, the adhesive function of the adhesive tape 44 is released. At this time, the cut end of the anti-fall net 4 is a free end, the balls 17 move in the groove 81 and move closely together, and the anti-fall net 4 is retracted upward and collected in the cable 19 on the sleeve 3. Figure 4 shown.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A well valve opening tool with combustible and toxic gas detection function, characterized by: The invention comprises a sleeve (3) and a lifting rod (10) arranged therein, wherein the bottom end of the lifting rod (10) is provided with a plurality of shifting rods (5), a limiting structure for limiting the rotation of the lifting rod (10) relative to the sleeve (3) in the circumferential direction is provided between the sleeve (3) and the lifting rod (10), the sleeve (3) is provided with a rotating structure and a driving structure for driving the lifting rod (10) to move up and down, the sleeve (3) is also provided with a winding wheel (1) for rotation, the winding wheel (1) is wound with a detection hose (11), one end of the detection hose (11) is a movable port arranged at the bottom end of the lifting rod (10), and the other end is a fixed port connected to the inlet of a gas detection alarm (2) fixed by the winding wheel (1).

2. The underground well valve opening tool with combustible and toxic gas detection function according to claim 1, characterized in that: The center hole of the sleeve (3) is a square hole structure, the lifting rod (10) is a square rod adapted to the square hole, and the lifting rod (10) and the square hole are assembled to form the limiting structure.

3. The underground well valve opening tool with combustible and toxic gas detection function according to claim 1, characterized in that: The rotating structure comprises a rotating rod (7) radially arranged on the upper part of the sleeve (3).

4. The underground well valve opening tool with combustible and toxic gas detection function according to claim 1, characterized in that: The driving structure includes a gear (6) that is arranged outside the sleeve (3) and near the bottom of the sleeve (3) and is rotatably arranged via a rotating shaft (13); the sleeve (3) is provided with a notch corresponding to the gear (6); the lifting rod (10) is matched with a rack structure; the gear (6) enters the sleeve (3) through the notch and engages with the rack structure of the lifting rod (10).

5. The underground well valve opening tool with combustible and toxic gas detection function according to claim 4, characterized in that: One end of the rotating shaft (13) is correspondingly provided with a crank (15); The sleeve (3) is provided with a limiting structure, which includes a limiting plate (12) provided on the side wall of the sleeve (3), the rotating shaft (13) passes through the limiting plate (12), and the limiting plate (12) is closely and evenly provided with a plurality of limiting screw holes (121) around the circumferential direction of the rotating shaft (13). Under the action of gravity, the sleeve (3) moves downward, faces the rotating direction of the rotating shaft (13), and is close to the limiting screw hole (121) of the crank (15) to be adapted to the limiting bolt (14).

6. The underground well valve opening tool with combustible and toxic gas detection function according to claim 4, characterized in that: The winding wheel (1) is located outside the gear (6) and is arranged concentrically with the gear (6). The winding wheel (1) and the rotating shaft (13) are connected and fixed.

7. The underground well valve opening tool with combustible and toxic gas detection function according to claim 1, characterized in that: A ratchet structure (9) is provided at the bottom end of the lifting rod (10), and the ratchet structure (9) includes a driving body (91), a pawl (93) and a ratchet (92) that are matched and assembled. The lifting rod (10) and the driving body (91) are connected, and the shifting rod (5) is arranged on the ratchet.

8. The underground well valve opening tool with combustible and toxic gas detection function according to claim 1, characterized in that: The bottom end of the sleeve (3) is provided with an anti-falling net (4), and the anti-falling net (4) is a circular ring net with a notch in the radial direction; The bottom end of the sleeve (3) is provided with a fixing sleeve (8), the outer annular surface of the fixing sleeve (8) is provided with an annular groove (81), the anti-falling net (4) is evenly provided with a plurality of connecting rods (41) in the circumferential direction, each connecting rod (41) is arranged along the radial direction of the anti-falling net (4), and the inner end of the connecting rod (41) is provided with a ball (17), the ball (17) is slidably arranged in the annular groove (81), and a distance is left between each two adjacent balls (17); After the anti-falling net (4) is opened, the detection hose (11) passes through the incision of the anti-falling net (4).

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