External opening device for valve well emptying valve of buried pipe network

Abstract

The utility model belongs to the technical field of opening of emptying valves, and discloses an external opening device for an emptying valve of a buried pipe network valve well, which comprises a support arm, the lower end of the support arm is fixed on a support shaft, the support shaft is rotatably connected on a support seat, and channel steel integrated with the support arm is fixed on the middle upper part of the support arm. A manual winch and a locking mechanism are arranged on the channel steel, the locking mechanism is used for controlling the manual winch to be locked and fixed on the channel steel, a pull rope is arranged on the manual winch, and a buckle is fixed at the outer end of the pull rope. Due to the structure, workers can open the emptying valve without entering a buried pipe network valve well, labor intensity is reduced, operation safety is improved, the structure is simple, and operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of opening of emptying valve, provide a kind of external opening device for buried pipe network valve well emptying valve, which is convenient to operate, reduce labor intensity and improve the operation safety. BACKGROUND

[0002] During the gas transmission process of natural gas transmission pipe network, if leakage accident occurs, professional workers need to repair it. When workers repair the leaking pipe section, they need to close the stop valve in the buried pipe network valve well at the position of both ends of the leaking pipe section, and then open the emptying valve in the buried pipe network valve well to perform emptying treatment on the natural gas in the leaking pipe section.

[0003] The existing operation process of opening the emptying valve in the buried pipe network valve well is that workers go down to the buried pipe network valve well and manually operate the emptying valve. Due to the limited operation space of the buried pipe network valve well, the labor intensity is large, and it is not convenient to operate. The high-pressure natural gas that leaks out is easy to impact the workers, causing the workers to be injured, and the safety is low. After the workers open the emptying valve, the workers are in the small and narrow buried pipe network valve well where a large amount of natural gas is gathered, which is easy to cause a gas poisoning accident. SUMMARY

[0004] Therefore, the purpose of the utility model is to provide an external opening device for buried pipe network valve well emptying valve, which is convenient to operate, reduces labor intensity and improves operation safety.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0006] The utility model provides an external opening device for buried pipe network valve well emptying valve, wherein: including support arm, the lower end of the support arm is fixed on support shaft, the support shaft is rotatably connected on support base, the middle upper part of support arm is fixed with the integral channel steel, the hand-operated hoist and locking mechanism are provided on channel steel, the locking mechanism is used for controlling hand-operated hoist locking and fixing on channel steel, the pull rope is provided on hand-operated hoist, and the outer end of pull rope is fixed with buckle.

[0007] In order to make the structure of hand-operated hoist simple and easy to operate, in the above scheme, further: the drive shaft is arranged on the two side walls of channel steel, the drive gear on the drive shaft is engaged with the driven gear, the driven gear is fixed on the driven shaft, the driven shaft is arranged on the two side walls of channel steel, the driven shaft is fixed with hoisting disc, the inner end of pull rope is fixed on hoisting disc, and the handle is fixed on one end of drive shaft and integral with drive shaft;The driven shaft is above the drive shaft.

[0008] In order to make the structure of the locking mechanism simple and easy to control, in the above scheme, further: the locking mechanism comprises fixed shafts fixed on the two side walls of the channel steel, a sleeve fitted on the fixed shafts, a ratchet wheel with at least one locking ratchet fixed on the sleeve, the ratchet wheel is cam-shaped, the outer edge surface of the ratchet wheel is fixed integrally with the outer end of a return spring, the inner end of the return spring is fixed on the groove bottom plate of the channel steel, and the fixed shafts are located below the driving shaft.

[0009] In normal state, the locking ratchet is engaged with the driving gear and locks the driving gear.

[0010] When the emptying valve is opened, in order to facilitate the first hand of the worker to stabilize the supporting arm at a suitable exertion angle, in the above scheme, further: the supporting arm is a channel steel, and a cross beam integrated with the supporting arm is fixed at the top end of the supporting arm.

[0011] In order to prevent the line from being blown, in the above scheme, further: the supporting arm has a wire passing hole, and the outer end of the pull rope is fixed integrally with a buckle after passing through the wire passing hole.

[0012] In order to be suitable for valve handles of different models of emptying valves, in the above scheme, further: the buckle comprises a hook, a screw rod threadedly connected with the top of the hook, a connecting ring integrated with the screw rod is fixed at the top end of the screw rod, the outer end of the pull rope is fixed integrally with the connecting ring, and a valve handle mounting cavity is formed between the lower end of the screw rod and the bottom of the hook.

[0013] In order to ensure that the valve handle of the emptying valve is stably fixed in the buckle, in the above scheme, further: the lower end of the screw rod is fixed with an adjusting plate integrated therewith.

[0014] The beneficial effects of the utility model are: the worker can open the emptying valve without entering the buried pipe network valve well, labor intensity is reduced, operation safety is improved, the structure is simple, and operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail in the preferred mode below, and the drawings will be combined:

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a structural schematic view of the manual hoist of the utility model;

[0018] Fig. 3 It is a structural schematic view of the buckle of the utility model;

[0019] Reference numerals: 1, support arm; 2, support shaft; 3, support seat; 4, channel steel; 5, hand winch; 6, locking mechanism; 7, pull rope; 8, buckle; 9, cross beam; 10, wire passing hole; 51, drive shaft; 52, drive gear; 53, driven gear; 54, driven shaft; 55, winch disc; 56, handle; 61, fixed shaft; 62, sleeve; 63, locking ratchet; 64, ratchet wheel; 65, return spring; 81, hook; 82, screw rod; 83, connecting ring; 84, valve handle mounting cavity; 85, adjusting plate. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with specific embodiments. In the description, the drawings are only used for example description, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation of the patent; in order to better illustrate the embodiments of the utility model, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some known structures and their descriptions in the drawings can be omitted.

[0021] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The utility model will be further described in detail below in combination with the drawings.

[0022] As Figs. 1-3The utility model provides an external opening device for buried pipe network valve well vent valve, wherein: including support arm 1, the lower end of support arm 1 is fixed on support shaft 2, support shaft 2 is rotatably connected on support seat 3, the middle upper part of support arm 1 is fixed with the integral channel steel 4 of it, is provided with hand winch 5 and locking mechanism 6 on channel steel 4, locking mechanism 6 is used for controlling hand winch 5 locking and is fixed on channel steel 4, be provided with pull rope 7 on hand winch 5, the outer end of pull rope 7 is fixed with buckle 8. In specific implementation, support seat 3 is fixed on the ground outside buried pipe network valve well through anchor bolt, buckle 8 is fixed with the valve handle of vent valve in buried pipe network valve well as a whole. Locking mechanism 6 fine locking to hand winch 5 under normal circumstances, when working condition, the worker separates locking mechanism 6 from hand winch 5, then the worker's first hand holds support arm 1 and adjusts it to the best power angle of itself, then the worker's second hand operates hand winch 5 rotation, so that pull rope 7 is wound on hand winch 5 and realizes the movement of buckle 8 to the well mouth direction of buried pipe network valve well, realizes the opening of vent valve with the valve handle of fixed vent valve, finally realizes that the worker does not enter buried pipe network valve well and opens vent valve and carries out venting treatment. Reduce the labor intensity and improve the operation safety.

[0023] In order to make the structure of hand winch 5 simple and easy to operate, in the above embodiment, preferably: the hand winch 5 includes drive shafts 51 arranged on both side walls of the channel steel 4, drive gears 52 on the drive shafts 51 are engaged with driven gears 53 fixed on driven shafts 54, the driven shafts 54 are arranged on both side walls of the channel steel 4, the driven shafts 54 are fixed with winch discs 55, inner ends of the pull ropes 7 are fixed on the winch discs 55, one end of the drive shafts 51 is fixed with handles 56 integrated therewith; the driven shafts 54 are located above the drive shafts 51.

[0024] In order to make the structure of locking mechanism 6 simple and easy to control, in the above embodiment, preferably: the locking mechanism 6 includes fixed shafts 61 fixed on both side walls of the channel steel 4, sleeves 62 sleeved on the fixed shafts 61, ratchets 63 with at least one locking ratchet tooth 63 fixed on the sleeves 62, the ratchets 64 are cam-shaped, outer edges of the ratchets 64 are fixed with outer ends of return springs 65, inner ends of the return springs 65 are fixed on groove bottom plates of the channel steel 4, the fixed shafts 61 are located below the drive shafts 51;

[0025] In normal state, the locking ratchet 63 is engaged with the driving gear 52 and locks the driving gear 52. In working state, i.e. when the vent valve is opened, the worker first moves the ratchet 64, which swings along the fixed shaft 61 under the action of the return spring 65, so that the locking ratchet 63 is disengaged from the driving gear 52. The worker rotates the handle 56 by external force, so that the driving gear 52 drives the driven gear 53 to rotate, the driven gear 53 drives the winding disc 55 integrated therewith to rotate, the pull rope 7 is wound on the winding disc 55 to realize the movement of the buckle 8 to the wellhead direction of the buried pipe network valve well, the valve handle of the vent valve fixed with the buckle 8 realizes the opening of the vent valve, and finally the worker realizes the opening of the vent valve for venting treatment without entering the buried pipe network valve well.

[0026] When the vent valve is opened, in order to facilitate the worker to stabilize the support arm 1 at a suitable force angle with the first hand, in the above-mentioned scheme, further: the support arm 1 is a channel steel, and a cross beam 9 integrated with the support arm 1 is fixed at the top end of the support arm 1. When in use, the worker holds the cross beam 9 with the first hand.

[0027] In order to prevent the line from being blown, in the above-mentioned embodiment, preferably: the support arm 1 has a wire passing hole 10, and the outer end of the pull rope 7 passes through the wire passing hole 10 and is fixed as a whole with the buckle 8. In this embodiment, the pull rope 7 is a steel rope.

[0028] In order to be suitable for the valve handle of different models of vent valves, in the above-mentioned embodiment, preferably: the buckle 8 comprises a hook 81, a screw rod 82 threadedly connected with the top of the hook 81, a connecting ring 83 integrated with the screw rod 82 and fixed at the top end of the screw rod 82, the outer end of the pull rope 7 is fixed as a whole with the connecting ring 83, and a valve handle mounting cavity 84 is formed between the lower end of the screw rod 82 and the bottom of the hook 81. In specific implementation, the valve handle of the vent valve is placed at the valve handle mounting cavity 84 and is fixed at the bottom of the hook 81 by the lower end of the screw rod 82.

[0029] In order to ensure that the valve handle of the vent valve is stably fixed in the buckle 8, in the above-mentioned embodiment, preferably: the lower end of the screw rod 82 is fixed with an adjusting plate 85 integrated therewith. In this embodiment, the adjusting plate 85 and the screw rod 82 can be welded or threadedly connected.

[0030] In all the above-mentioned embodiments, the related components are all conventional products sold in the market.

[0031] Finally, it should be pointed out that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. An external opening device for a buried tube network valve well venting valve, characterized in that: The utility model provides a kind of supporting arm (1), the lower end of the supporting arm (1) is fixed on support shaft (2), support shaft (2) is rotatably connected on support base (3), slot steel (4) is fixed with its integration in the middle upper part of supporting arm (1), hand winch (5) and locking mechanism (6) are provided on slot steel (4), the locking mechanism (6) is used to control hand winch (5) locking and fixed on slot steel (4), pull rope (7) is provided on the hand winch (5), the outer end of pull rope (7) is fixed with buckle (8).

2. The external opening device for a buried tube network valve well venting valve according to claim 1, characterized in that: The hand winch (5) includes drive shaft (51) provided on the two side walls of slot steel (4), drive gear (52) located on drive shaft (51) is engaged with driven gear (53), driven gear (53) is fixed on driven shaft (54), driven shaft (54) is provided on the two side walls of slot steel (4), the driven shaft (54) is fixed with winch disc (55), the inner end of pull rope (7) is fixed on winch disc (55), one end of drive shaft (51) is fixed with handle (56) integrated with it;The driven shaft (54) is located above the drive shaft (51).

3. The external opening device for a buried tube network valve well venting valve according to claim 2, characterized in that: The locking mechanism (6) includes fixed shaft (61) fixed on the two side walls of slot steel (4), sleeve (62) sleeved on fixed shaft (61), ratchet wheel (64) with at least one locking ratchet (63) fixed on sleeve (62), the ratchet wheel (64) is cam-shaped, the outer edge surface of the ratchet wheel (64) is integrated with the outer end of return spring (65), the inner end of the return spring (65) is fixed on the groove bottom plate of slot steel (4), the fixed shaft (61) is located below the drive shaft (51); In normal state, locking ratchet (63) is engaged with drive gear (52) and locks drive gear (52).

4. The external opening device for a buried tube network valve well venting valve according to claim 1, characterized in that: The supporting arm (1) is a slot steel, and a cross beam (9) is fixed to the top end of the supporting arm (1) integrally.

5. The external opening device for a buried tube network valve well venting valve according to claim 1 or 4, characterized in that: The supporting arm (1) has a wire passing hole (10), and the outer end of the pull rope (7) is fixed to the buckle (8) after passing through the wire passing hole (10).

6. The external opening device for a buried tube network valve well venting valve according to claim 1, characterized in that: The buckle (8) includes a hook (81), a screw rod (82) threadedly connected to the top of the hook (81), a connecting ring (83) fixed to the top end of the screw rod (82) integrally, the outer end of the pull rope (7) is fixed to the connecting ring (83) integrally, and a valve handle mounting cavity (84) is formed between the lower end of the screw rod (82) and the bottom of the hook (81).

7. An external opening device for a buried tube network valve well venting valve according to claim 6, characterized in that: The lower end of the screw rod (82) is fixed with an adjusting plate (85) integrally.

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