Novel plunger pump packing box locking device

Abstract

The utility model discloses a novel plunger pump packing box locking device, which belongs to the technical field of plunger pump locking devices, and comprises a limit rod and a packing box, the bottom end of the limit rod is welded with a limit plate, the bottom end of the limit plate is welded with a positioning pin, the surface of the packing box is provided with circumferentially distributed dismounting holes, the positioning pin is arranged in the dismounting holes, and the packing box is arranged in the packing box. A plurality of adjusting mounting holes are formed in the limiting rod, limiting bolts are inserted into the adjusting mounting holes, and nuts are in threaded connection with the positions, located on the two sides of the limiting rod, of the surfaces of the limiting bolts. The anti-loosening device can be installed at an existing disassembly and assembly hole of a conventional packing box, can be installed and used by means of limiting of a power end shell vertical plate, can be simply and conveniently disassembled and assembled without special transformation of an original packing box and an original shell, is provided with a plurality of limiting holes, and is convenient to disassemble and assemble by selecting different limiting holes. And plunger pumps, fluid ends and packing boxes of different models can be matched, and the universality is extremely high.

Description

TECHNICAL FIELD

[0001] The utility model relates to plunger pump anti -looseness device technical field especially relates to a new type plunger pump packing box anti -looseness device. BACKGROUND

[0002] With the sustained development of oil and gas field, operation pressure is higher and higher, and the sealing requirement of plunger pump liquid force end is higher and higher. At present, the connection of packing box and liquid force end is mainly threaded connection, under the comprehensive action of whole machine structure arrangement, equipment ground, pressure fluctuation etc. in operation process, the whole machine vibration appears, in addition, packing assembly sealing belongs to dynamic sealing, with the operation, the sealing assembly will appear corresponding wear, under the comprehensive action, it can lead to the thread loosening of packing box, and the thread loosening can lead to the packing assembly unable to be pressed tightly, and then accelerates the wear of packing assembly, finally leads to the early failure of sealing, influences normal operation. Therefore, the anti -looseness problem of packing box is particularly important.

[0003] The existing equipment either has no packing box anti -looseness device or cannot play the anti -looseness effect well, leading to low service life of sealing assembly, early failure, and affecting normal operation of well site. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the prior art's problem and provides a new type plunger pump packing box anti -looseness device.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A new type plunger pump packing box anti -looseness device, including spacing rod and packing box, the bottom of spacing rod is welded with spacing plate, the bottom of spacing plate is welded with positioning pin, the surface of packing box is provided with the dismounting hole of circumferential distribution, the positioning pin is installed in the inside of dismounting hole, the inside of spacing rod is provided with a plurality of adjusting installation hole, the inside of adjusting installation hole is inserted with spacing bolt, the surface of spacing bolt is connected with nut on the both sides of spacing rod.

[0007] Preferably, one side of the spacing plate is fixedly connected with a spacing side plate.

[0008] Preferably, the spacing end of the spacing rod is arranged at a certain angle with the axis of the positioning pin.

[0009] Preferably, only one dismounting hole on the surface of the packing box needs to be installed with the spacing rod.

[0010] Preferably, only one adjusting installation hole on the surface of the spacing rod needs to be installed with the spacing bolt inside, and the lengths of the spacing bolts are not the same, which are determined by the spacing requirement.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1、 this anti -loose device can install in the existing dismounting hole of conventional packing box, with the help of power end shell riser limit, need not to the original packing box and shell carry out special modification, can install use, simple and convenient to dismount.

[0013] 2、 this anti -loose device main body simple structure adopts conventional carbon steel, alloy steel welding or processing can, assemble standard bolt nut and is used, material simple, short production cycle, low in production cost.

[0014] 3、 this anti -loose device sets up multiple limit holes, through the selection of different limit holes, can be matched with different models of plunger pump, fluid end, packing box, and the versatility is extremely strong.

[0015] 4、 this anti -loose device sets up multiple limit holes, through the selection of different limit holes, can realize the limit requirement under the rotation of different angles of same packing box, and the strain ability is strong.

[0016] 5、 this anti -loose device principle is simple, the effect is remarkable, and the application performance is good, can be extended to " packing pressure cap " anti -loose or other application scene. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 For the novel plunger pump packing box anti -loose device of the utility model, the limiting device is installed on the three-dimensional structure schematic diagram of the packing box;

[0018] Figure 2 For the novel plunger pump packing box anti -loose device of the utility model, the limiting device is installed on the three-dimensional structure schematic diagram of the packing box;

[0019] Figure 3 For the novel plunger pump packing box anti -loose device of the utility model, the limiting device is installed on the three-dimensional structure schematic diagram of the packing box;

[0020] Figure 4 For the novel plunger pump packing box anti -loose device of the utility model, the limiting device is installed on the three-dimensional structure schematic diagram of the packing box;

[0021] In the drawing: 1, limit plate;2, limit rod;201, adjusting installation hole;3, nut;4, limit bolt;5, limit side plate;6, positioning pin;7, packing box;701, dismounting hole. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, based on the embodiments of the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of the present application.

[0023] With reference to Figures 1-4 A novel packing box anti-loose device of plunger pump, comprising a limiting rod 2 and a packing box 7, the bottom end of the limiting rod 2 is welded with a limiting plate 1, the bottom end of the limiting plate 1 is welded with a positioning pin 6, further, the limiting end of the limiting rod 2 is arranged at a certain angle with the axis of the positioning pin 6, to ensure that when the packing box 7 has a loosening tendency, the thrust component applied by the power end shell to the anti-loose device is downward, to ensure that the anti-loose device cannot be separated from the dismounting hole 701 of the packing box 7, thereby stably and reliably achieving anti-loose.

[0024] The surface of the packing box 7 is provided with circumferentially distributed dismounting holes 701, the positioning pin 6 is installed inside the dismounting hole 701, the inside of the limiting rod 2 is provided with a plurality of adjusting mounting holes 201, the inside of the adjusting mounting hole 201 is inserted with a limiting bolt 4, the surface of the limiting bolt 4 is threadedly connected with a nut 3 on the two sides of the limiting rod 2, the setting of the nut 3 can realize stable installation of the limiting bolt 4 inside the adjusting mounting hole 201.

[0025] Further, only one adjusting mounting hole 201 inside the limiting rod 2 needs to be installed with the limiting bolt 4, the lengths of the limiting bolts 4 are not the same, which is determined by the limiting requirement.

[0026] Further, one side of the limiting plate 1 is fixedly connected with a limiting side plate 5, the limiting side plate 5 can prevent the anti-loose device from rotating along the dismounting hole 701 of the packing box 7, thereby affecting the anti-loose effect.

[0027] Further, only one limiting rod 2 needs to be installed at the dismounting hole 701 of the surface of the packing box 7, that is, only one limiting device needs to be installed on the surface of the packing box 7.

[0028] The utility model discloses when using, through the locating pin 6 on the spacing rod 2 installation is in the corresponding dismounting hole 701 of disc packing box 7, be equipped with a plurality of adjusting mounting hole 201 on spacing rod 2, when using, the specific screwing position of combining disc packing box 7 assembly is on the thread of hydraulic end, through selecting the adjusting mounting hole 201 of proper position on spacing rod 2 and the adaptive length of the extension of limiting bolt 4 in adjusting mounting hole 201 (namely selecting the length of limiting bolt 4), the head of limiting bolt 4 is just clamped on the power end casing, then the nut 3 on both sides of limiting bolt 4 is tightened, and the position of limiting bolt 4 is fixed, thereby realizing the purpose that disc packing box 7 cannot loosen, according to the above adjustment mode, the anti-loosening and anti-retreating of disc packing box 7 at any angle position can be realized.

[0029] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A new type of anti-loose device for a packing box of a plunger pump, comprising a limiting rod (2) and a packing box (7), characterized in that, The bottom end of the limiting rod (2) is welded with a limiting plate (1), the bottom end of the limiting plate (1) is welded with a positioning pin (6), the surface of the packing box (7) is provided with a plurality of dismounting holes (701) distributed in a circle, the positioning pin (6) is installed in the dismounting hole (701), the inside of the limiting rod (2) is provided with a plurality of adjusting mounting holes (201), the inside of the adjusting mounting hole (201) is inserted with a limiting bolt (4), the surface of the limiting bolt (4) is threadedly connected with a nut (3) on the two sides of the limiting rod (2).

2. A new type of packing box anti-loose device for plunger pump according to claim 1, characterized in that, One side of the limiting plate (1) is fixedly connected with a limiting side plate (5).

3. A new type of packing box anti-loose device for plunger pump according to claim 1, characterized in that, The limiting end of the limiting rod (2) is arranged at an angle with the axis of the positioning pin (6).

4. A new type of packing box anti-loose device for plunger pump according to claim 1, characterized in that, Only one dismounting hole (701) is needed on the surface of the packing box (7) to install the limiting rod (2).

5. A new type of packing box anti-loose device for plunger pump according to claim 1, characterized in that, Only one adjusting mounting hole (201) is needed on the surface of the limiting rod (2) to install the limiting bolt (4), and the lengths of the limiting bolts (4) are different, which is determined by the limiting requirement.

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