Cage type top drive plug valve detacher

Abstract

The utility model discloses a cage type top drive plug valve detacher, belongs to the technical field of valve element part detaching tools, and aims to solve the technical problem that a cage type valve is difficult to detach in the prior art. The device comprises a core shaft rod, a core shaft arranged at one end of the core shaft rod and a shell arranged on the outer side of the core shaft in a sleeving mode. A sliding block releasing assembly is arranged on the shell and used for being connected with an auxiliary hole in the cage type valve body in a clamped mode. The sliding block release assembly comprises a sliding block, a spring and a release piece, and the sliding block is movably arranged in the shell through the spring; the releasing part is used for controlling the retracting and releasing state of the sliding block, one end of the releasing part abuts against the mandrel, and the other end of the releasing part abuts against the sliding block. The cage type top drive plug valve detacher can quickly and conveniently take a cage type valve out of a plug valve body, and is simple in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve core part dismounting frock technical field, concretely relates to a cage type top drive plug valve dismounting device. BACKGROUND

[0002] In prior art, the cage type valve is generally assembled as a whole and then installed into the plug valve, but when the cage type valve is replaced and taken out, it is difficult.

[0003] The traditional cage type valve dismounting method not only consumes a lot of manpower, material resources and time, is inefficient, but also easily damages the equipment in the operation process, thereby increasing the maintenance cost and equipment downtime. In addition, due to the lack of professional dismounting tools, the operator may adopt non-standard operation mode in the dismounting operation, which undoubtedly brings potential safety risks to the operator.

[0004] Therefore, there is an urgent need for a cage type top drive plug valve dismounting device which facilitates the dismounting of the cage type valve from the plug valve. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cage type top drive plug valve dismounting device to solve the technical problem of difficult dismounting of the cage type valve in prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a cage type top drive plug valve dismounting device for dismounting the cage type valve body assembled in the plug valve body, which comprises a mandrel rod, a mandrel arranged at one end of the mandrel rod and a shell sleeved outside the mandrel.

[0008] The shell is provided with a sliding block release assembly, which is used for clamping with the process hole in the cage type valve body.

[0009] The sliding block release assembly comprises a sliding block, a spring and a release piece, and the sliding block is movably arranged in the shell through the spring.

[0010] The release piece is used for controlling the retraction and release state of the sliding block, one end of which abuts against the mandrel, and the other end abuts against the sliding block.

[0011] The sliding block release assembly can quickly form a clamping relationship with the inner hole of the cage type valve, and the cage type valve can be quickly taken out from the plug valve body by sliding the sliding block backward and striking the mandrel rod.

[0012] Optionally or preferably, the mandrel comprises a connecting section and a conical section arranged in sequence.

[0013] The connecting section is provided with a notch and an abutting surface I respectively, and the taper section is provided with an abutting surface II.

[0014] Optionally or preferably, the included angle of the extension line of the sidewall of the taper section is 18°-20°. α , α =18°-20°.

[0015] Optionally or preferably, the shaft sleeve rod is sleeved outside the mandrel rod, and a drift hammer is arranged on the end of the shaft sleeve rod away from the mandrel.

[0016] Optionally or preferably, a limit hammer pad is further arranged on the side of the drift hammer close to the mandrel.

[0017] Based on the above technical solutions, the cage top drive plug valve disassembler can at least produce the following technical effects:

[0018] The cage top drive plug valve disassembler provided by the utility model can align the mandrel with the inner hole of the cage valve, insert the connecting section and the taper section into the inner hole of the cage valve, and then make the sliding block and the process groove of the inner hole of the cage valve be clamped, so that the cage valve can be taken out from the plug valve body by shaking the mandrel rod with the drift hammer. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the cross-sectional structure schematic view of the cage top drive plug valve disassembler.

[0020] In the figure: 1, mandrel rod; 2, drift hammer; 3, shaft sleeve rod; 4, hammer pad; 5, shell; 6, mandrel; 7, cage valve body; 8, sliding block; 9, spring; 10, notch; 11, release; 12, pin shaft; 13, end cover; 14, cage ball valve core; 15, plug valve body; 16, abutting surface I; 17, abutting surface II; 18, steel ball. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments in the utility model without creative labor belong to the protection scope of the utility model.

[0022] Embodiment one

[0023] Please refer to Figure 1 A cage top drive plug valve disassembler comprises a mandrel rod 1, a shaft sleeve rod 3 sleeved outside the mandrel rod 1 and a drift hammer 2 sleeved at one end of the shaft sleeve rod 3.

[0024] In the embodiment, the core shaft 6 is arranged at the other end of the core shaft rod 1 away from the hammer 2, and comprises a connecting section, and the connecting section is provided with a notch 10 and an abutting surface 16, respectively. The connecting section is inserted into the inner hole of the cage valve, and the abutting or clamping connection is formed. The cage valve body 7 is detached from the plug valve body 15 by sliding the hammer 2 to strike the core shaft rod 1.

[0025] Specifically, the core shaft 6 is arranged outside the shell 5, and the shell 5 is provided with an end cover 13 at one end. The shell is provided with a sliding block releasing assembly, and the sliding block releasing assembly is clamped with the process hole in the cage valve body 7.

[0026] In the embodiment, the sliding block releasing assembly comprises a sliding block 8, a spring 9 and a releasing piece 11. The sliding block 8 is movably arranged in the shell 5 by the spring 9. The connecting section is provided with a corresponding notch 10 and an abutting surface 16. Since the core shaft 6 is movably arranged in the shell 5, the sliding block 8 is in a retracted state in the initial state. With the movement of the core shaft 6, the lower end of the sliding block 8 first contacts the abutting surface 16, and then the contact surface 1 continues to move inward until it abuts against the releasing piece 11 and slightly lifts the releasing piece 11. The releasing piece 11 is fixed by a pin shaft 12. At this time, the lower end of the sliding block 8 is clamped in the notch 10 of the connecting section. The spring 9 lifts the sliding block 8 upward and clamps it in the process groove of the inner hole of the cage valve. At this time, the cage valve body 7 is taken out by sliding the hammer 2 and striking the core shaft rod 1.

[0027] In the embodiment, the releasing piece 11 is used to control the retracted state of the sliding block 8. One end of the releasing piece 11 abuts against the core shaft 6, and the other end abuts against the sliding block 8.

[0028] In the embodiment, a tapered section is further arranged at the end of the connecting section away from the core shaft rod 1, and the tapered section is provided with an abutting surface 17.

[0029] In the embodiment, the included angle of the extension line of the side wall of the tapered section is α , α 18°-20°.

[0030] In actual work, the connecting section and the tapered section are inserted into the inner hole of the cage valve. At this time, the core shaft 6 completely enters the inner hole of the cage valve core 14, and the steel ball 18 is tightly connected to the inner hole of the core under the pushing of the abutting surface 17. At this time, the cage valve body 7 is taken out by sliding the hammer 2 and striking the core shaft rod 1.

[0031] In the embodiment, the limit hammer pad 4 is further arranged at the side of the hammer 2 close to the core shaft 6, so as to improve the striking effect of the hammer 2 on the core shaft rod 1.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A caged top drive plug valve dismounting device, characterized in that, The application relates to a cage valve body (7) for disassembling and assembling in a plug valve body (15), which comprises a mandrel rod (1), a mandrel (6) arranged at one end of the mandrel rod (1) and a shell (5) sleeved outside the mandrel (6). A slider release assembly is arranged on the shell (5) and used for clamping a process hole in the cage valve body (7); The slider release assembly comprises a slider (8), a spring (9) and a release piece (11), the slider (8) is movably arranged in the shell (5) through the spring (9); The release piece (11) is used for controlling the expansion and contraction state of the slider (8), one end of the release piece (11) abuts against the mandrel (6), and the other end abuts against the slider (8).

2. The cage top drive plug valve dismounting device of claim 1, wherein, The mandrel (6) comprises a connecting section and a conical section arranged in sequence; The connecting section is respectively provided with a notch (10) and an abutting surface I (16), and the conical section is provided with an abutting surface II (17).

3. The cage top drive plug valve dismounting device of claim 2, wherein, The included angle of the elongation line of the side wall of the conical section is α , α =18°-20°.

4. The cage top drive plug valve dismounting device of claim 1, wherein, A shaft sleeve rod (3) is sleeved outside the mandrel rod (1), a plumb bob (2) is arranged at one end of the shaft sleeve rod (3) away from the mandrel (6), and the plumb bob (2) is slidably arranged on the shaft sleeve rod (3).

5. The cage top drive plug valve dismounting device of claim 4, wherein, A limiting hammer pad (4) is further arranged on one side of the plumb bob (2) close to the mandrel (6).

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