CN215201588U - Nuclear power station diesel engine high pressure oil pump overhauls device - Google Patents
Nuclear power station diesel engine high pressure oil pump overhauls device Download PDFInfo
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- CN215201588U CN215201588U CN202120682209.6U CN202120682209U CN215201588U CN 215201588 U CN215201588 U CN 215201588U CN 202120682209 U CN202120682209 U CN 202120682209U CN 215201588 U CN215201588 U CN 215201588U
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Abstract
The utility model belongs to the technical field of diesel engine high pressure oil pump overhauls and maintains, concretely relates to nuclear power station diesel engine high pressure oil pump overhauls device and maintenance method thereof, include: the clamping device comprises a left clamping part, a right clamping part, a gasket, a spring B and a bolt and nut assembly; the utility model discloses no complicated structure, low in manufacturing cost simplifies many people's cooperation, complicated work into single, simple work, very big improvement maintenance efficiency, for the maintenance of nuclear power diesel engine high pressure oil pump relevant equipment has practiced thrift the plenty of time, the equipment safety of having guaranteed also better simultaneously.
Description
Technical Field
The utility model belongs to the technical field of diesel engine high pressure oil pump overhauls and maintains, concretely relates to nuclear power station diesel engine high pressure oil pump overhauls device.
Background
The high-pressure oil pump, also called injection pump, is the most important component in the fuel system. The high-pressure oil pump is used for increasing the pressure of fuel oil and injecting a certain amount of fuel oil into a combustion chamber in accurate time according to the requirement of the working condition of the diesel engine.
The high-pressure oil pump is overhauled, and the oil inlet and outlet sealing parts are replaced as necessary. Because the oil inlet and outlet pipe is a straight pipe, nine cylinders in a single row of the diesel engine are connected. And (3) overhauling one high-pressure oil pump, namely replacing the sealing gaskets of the oil pipes of the nine cylinders. The sealing gasket is positioned on the joint surface of a double-barrel (namely an oil inlet pipe, an oil return pipe and a leakage oil pipe integrated device of the diesel engine) and the high-pressure oil pump of the diesel engine, the diesel engine body is highly integrated, the operation space is small, the gasket is positioned in the middle of the joint surface, the maximum gap of the joint surface is only 5mm in the loose state of the bolt, the gasket is very inconvenient to install, and the gasket brings great difficulty to the overhaul work of the high-pressure oil pump.
At present, tools such as saw blades, iron sheets and the like are mostly adopted by domestic same lines and manufacturers to install gaskets, two to three persons are required to be matched simultaneously, the gaskets are difficult to position, and the installation cannot be completed even after many attempts are made. In addition, because the high integration of diesel engine body equipment, narrow and small space is easy to be installed improperly for the outer rubber seal of gasket damage, probably damage the sealed face of diesel engine when serious, increase the degree of difficulty for maintenance work.
In addition, after the gasket of the high-pressure oil pump is mounted, it is difficult to check whether the gasket is mounted in place. In case the installation is not in place, not only cause the very big waste of maintenance manpower, still easily cause the fuel to leak in a large number, the potential safety hazard is great. Therefore, in the maintenance work of the high-pressure oil pump, the replacement of the gasket is always a large project, and a high-pressure oil pump maintenance device suitable for a diesel engine of a nuclear power station and a maintenance method thereof are urgently needed to be designed and researched so as to improve the technical problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a among the prior art, a nuclear power station diesel engine high pressure oil pump overhauls device is proposed for when solution adopts prior art to overhaul nuclear power station diesel engine high pressure oil pump, need two to three people to cooperate and accomplish, and because the narrow installation in space, demolish diesel engine high pressure oil pipe and high pressure oil pump binding face department gasket difficulty, the difficult accurate location of gasket mounted position, and easily hinder the diesel engine sealing face during the operation, easily cause a large amount of fuel leakages in serious time, the great technical problem of potential safety hazard.
The technical scheme of the utility model:
a nuclear power station diesel engine high pressure oil pump overhauls device includes: the clamping device comprises a left clamping part, a right clamping part, a gasket, a spring B and a bolt and nut assembly;
the right clamping portion includes: the clamping block A, the right clamping rod, the right pull ring and the right fork-shaped connecting piece are arranged on the left side of the clamping block A; a right clamping rod is welded between the clamping block A and the right fork-shaped connecting piece; a right pull ring is welded on the right clamping rod;
the left clamping part comprises: the clamping block B, a left clamping rod, a left pull ring and a left connecting ring; a left clamping rod is welded between the clamping block B and the left connecting ring; a left pull ring is welded on the left clamping rod;
the left connecting ring of the left clamping part and the right forked connecting piece of the right clamping part are concentrically arranged and are in threaded connection through a bolt and nut assembly, and a gasket is arranged between the clamping block A and the clamping block B; the middle positions of the right clamping rod and the left clamping rod are connected through a spring B;
the clamping block A is also provided with a right limiting guide column, a right limiting block and a spring A; the right limiting guide post is welded on the clamping block A, and a spring A is sleeved on the right limiting guide post in a surrounding manner; the top of the spring A is connected with the right limiting block in a spot welding mode.
The clamping block B is also provided with a left limiting guide post, a left limiting block and a spring C; the left limiting guide post is welded on the clamping block B, and a spring C is sleeved on the left limiting guide post in a surrounding manner; the top of the spring C is connected with the left limiting block in a spot welding mode.
And the left limiting guide post and the right limiting guide post are symmetrically welded on the clamping block A and the clamping block B respectively.
The spring A moves along the direction of the right limiting guide post; the spring C moves along the direction of the left limiting guide post.
The clamping block A and the clamping block B are both of rectangular plate type structures as a whole; and the mutually symmetrical right-angle positions of the clamping block A and the clamping block B are provided with fan-shaped notches with the same radian.
The gasket passes through the fan-shaped breach centre gripping on grip block A and the grip block B fixed, and the centre gripping fixed position accessible spring B of gasket slightly adjusts.
The radian of the fan-shaped notches on the clamping block A and the clamping block B is matched with the shape radian of the gasket.
The middle positions of the right side clamping rod and the left side clamping rod are symmetrically welded with a spring hook, and two ends of the spring B are hung on the spring hooks of the right side clamping rod and the left side clamping rod respectively.
The utility model has the advantages that:
in the past, when a high-pressure oil pump is maintained or installed or an oil inlet pipe and an oil return pipe are checked, because the binding surface is too narrow, the installation position is suspended, the maintenance environment is dark, and the high-pressure oil pump can be installed only by personnel with higher qualification and more energy consumption. The device and the method for overhauling the high-pressure oil pump of the diesel engine of the nuclear power station are used for quickly and accurately installing and dismantling the gasket at the joint surface of the high-pressure oil pipe and the high-pressure oil pump of the diesel engine, and the beneficial effects of the device are mainly embodied in the following aspects:
1) the joint surfaces of the fan-shaped notches on the clamping block A and the clamping block B and the gasket are in arc transition, the joint surfaces are attached to the edge of the appearance sealing surface of the gasket 9, the stress is uniform, the outer ring seal cannot be damaged, the gasket adopts double-layer seal, and if the force is too large or a sharp object is encountered, the sealing surface is easy to damage;
2) the spring B is arranged in the device, so that the clamping block A and the clamping block B of the device can continuously clamp the gasket in a narrow space through the automatic resilience force of the spring B, and the gasket can not fall off and is not required to be continuously operated manually;
3) the device has an adjustable limit design, and can adjust errors caused by manufacturing or surface paint, so that the tool has stronger applicability and is more practical;
4) the thickness of the clamping block A and the clamping block B of the device is slightly smaller than that of the gasket, the clamping block A and the clamping block B are easy to take out, and the device cannot be clamped due to the clamping of the gasket; the device is small, exquisite, light, easy to carry and easy to operate in a narrow space; the operation is simple, the operation error rate is almost 0, and the installation quality is effectively ensured;
5) the gasket at the joint surface of the high-pressure oil pipe and the high-pressure oil pump of the diesel engine can be used for installing and dismantling the device, conversion is not needed, and maintenance work is more convenient.
Drawings
Fig. 1 is a schematic structural view of a high-pressure oil pump maintenance device of a diesel engine of a nuclear power station designed by the utility model;
FIG. 2 is a schematic structural view of a right clamping portion in a high-pressure oil pump maintenance device of a diesel engine of a nuclear power station designed by the utility model;
fig. 3 is the utility model relates to a left clamping part structure schematic diagram in the nuclear power station diesel engine high pressure oil pump overhauls device.
1-clamping block, 2-spring A, 3-right limiting block, 4-right clamping rod, 5-bolt-nut assembly, 6-right pull ring, 7-left clamping rod, 8-spring B, 9-gasket, 10-limiting guide post, 11-right fork type connecting piece, 12-left connecting ring, 13-clamping block B, 14-left pull ring, 15-left limiting guide post, 16-left limiting block, 17-spring C
Detailed Description
The following describes in detail a high-pressure oil pump maintenance device for a diesel engine of a nuclear power station according to the present invention with reference to the accompanying drawings and embodiments.
The utility model discloses a pair of nuclear power station diesel engine high pressure oil pump overhauls device is shown in figure 1, include: the left clamping part, the right clamping part, the gasket 9, the spring B8 and the bolt-nut assembly 5;
the right clamping portion includes: a clamping block A1, a right clamping rod 4, a right pull ring 6 and a right forked connecting piece 11; a right clamping rod 4 is welded between the clamping block A1 and the right fork-shaped connecting piece 11; a right pull ring 6 is welded on the right clamping rod 4;
the left clamping part comprises: a clamping block B13, a left clamping bar 7, a left pull ring 14 and a left connecting ring 12; a left clamping rod 7 is welded between the clamping block B13 and the left connecting ring 12; a left pull ring 14 is welded on the left clamping rod 7;
the left connecting ring 12 of the left clamping part and the right forked connecting piece 11 of the right clamping part are concentrically arranged, and the left connecting ring 12 is arranged in the middle of the right forked connecting piece 11 and is in threaded connection through the bolt and nut assembly 5; the right side fork-shaped connection 11 has a limiting effect on the left side connecting ring 12, and the parallelism of the left part and the right part can be ensured. A little gap is left between the right side fork-shaped connection 11 and the left side connection ring 12 to ensure the flexible rotation.
The right pull ring 6 and the left pull ring 14 are symmetrically distributed and are respectively positioned on the left clamping rod 7 and the right clamping rod 4, the pull rings are symmetrically designed in a scissor type manner, the stress balance can be guaranteed, the operation is easy, and the opening and tightening of the clamping rods can be realized.
A gasket 9 is arranged between the clamping block A1 and the clamping block B13; the middle positions of the right clamping rod 4 and the left clamping rod 7 are connected through a spring B8; when the left and right clamping bars 7 and 4 are opened, the spring B8 is stretched by a tensile force, and the pad 9 is placed between the clamping block a1 and the clamping block B13, and the pad 9 is firmly fastened between the clamping block a1 and the clamping block B13 due to the contraction and rebound force of the spring B8.
The clamping block A1 is also provided with a right limit guide post 10, a right limit block 3 and a spring A2; the right limit guide post 10 is welded on the clamping block A1, and a spring A2 is sleeved on the right limit guide post 10; the top of the spring a2 is spot welded to the right stop block 3.
The clamping block B13 is also provided with a left limiting guide post 15, a left limiting block 16 and a spring C17; the left limiting guide post 15 is welded on the clamping block B13, and a spring C17 is sleeved on the left limiting guide post 15; the top of the spring C17 is connected with the left stop block 16 in a spot welding way.
The left limit guide post 15 and the right limit guide post 10 are symmetrically welded on the clamping block A1 and the clamping block B13 respectively.
The spring A2 moves along the direction of the right limit guide post 10; the spring C17 moves in the direction of the left limit guide post 15.
The clamping block A1 and the clamping block B13 are both cuboid plate-shaped structures as a whole; the mutually symmetrical right-angle positions of the clamping block A1 and the clamping block B13 are respectively provided with a sector notch with the same radian.
The gasket 9 is clamped and fixed through fan-shaped notches in the clamping block A1 and the clamping block B13, the clamping and fixing position of the gasket 9 can be slightly adjusted through the spring B8, and errors caused by manufacturing, installation and the like are prevented from existing in the installation of the gasket.
The radian of the fan-shaped notches on the clamping block A1 and the clamping block B13 is matched with the shape radian of the gasket 9. The fan-shaped notch radians on the clamping block A1 and the clamping block B13 are designed according to the shape radian of the gasket 9, the gasket is completely engaged, and meanwhile, a large contact area is ensured as much as possible, so that the stress is uniform, the gasket cannot be damaged, and sufficient friction force can be ensured, and the gasket is not easy to displace and even slide.
The middle positions of the right side clamping rod 4 and the left side clamping rod 7 are symmetrically welded with a spring hook, and two ends of the spring B8 are hung on the spring hooks of the right side clamping rod 4 and the left side clamping rod 7 respectively.
The function of installation gasket is exactly the locator, and the method of taking out at present domestic, installation gasket generally uses article such as iron sheet, saw blade, and this type of method has great drawback:
1. when the gasket is taken out, the position of the gasket cannot be accurately found, and the position cannot be clearly seen due to narrow space, so that the position of the gasket cannot be accurately found;
2. the sealing surface is easy to damage by using tools such as iron sheets, saw blades and the like, so that the sealing is not tight, and a large amount of fuel oil is leaked;
3. the gasket can not be positioned during installation, and is often matched by multiple persons, but the correctness of the installation position is difficult to ensure even the matching of the multiple persons, and if the gasket is inclined, the bolt can be screwed, but the sealing effect can not be realized at all.
Therefore, the overhauling method designed according to the overhauling device of the high-pressure oil pump of the diesel engine of the nuclear power station specifically comprises the following steps:
step one, when a gasket is taken out in the process of dismantling the high-pressure oil pump, a spring B8 between a right clamping rod 4 and a left clamping rod 7 is expanded by operating a right pull ring 6 and a left pull ring 14; so that the clamping block A1 and the clamping block B13 are opened at a certain angle; at the moment, the gasket 9 is placed in a joint face of a fan-shaped gap between the clamping block A1 and the clamping block B13, and the clamping block A1 and the clamping block B13 clamp the gasket 9 by slowly loosening the right pull ring 6 and the left pull ring 14 through the resilience force of the spring B8; slowly loosening a gasket pressing bolt on the high-pressure oil pump, and taking out the gasket 9; and removing the rest gaskets in sequence according to the method.
Step two, when a working condition that a high-pressure oil pump is installed with a gasket is carried out, the right pull ring 6 and the left pull ring 14 are operated, the spring B8 between the right clamping rod 4 and the left clamping rod 7 is unfolded, a certain angle is formed between the clamping block A1 and the clamping block B13, and the gasket 9 is placed between the clamping block A1 and the clamping block B13, so that the gasket 9 is completely attached to an attaching surface of a sector gap between the clamping block A1 and the clamping block B13; slowly loosening the right pull ring 6 and the left pull ring 14 to enable the clamping block A1 and the clamping block B13 to completely clamp the gasket 9 through the resilience force of the spring B8, and integrally placing the maintenance device for clamping the gasket 9 into the contact surface position of the high-pressure oil pump and the oil pipe assembly; the left edge and the right edge of the clamping block A1 and the clamping block B13 are consistent with the edge of a contact surface of an oil pipe assembly and a high-pressure oil pump, an oil port on a sealing surface of the oil pipe assembly is attached to the high-pressure oil pump through a bolt on the fastened oil pipe assembly, the bolt can penetrate through a gasket bolt hole to be connected with the high-pressure oil pump bolt hole at the moment, if the phenomenon of hole staggering still exists, the position is adjusted through the right limiting block 3 and the left limiting block 16, after fastening is completed, the right pull ring 6 and the left pull ring 14 are operated again to stretch the spring B8 between the right clamping rod 4 and the left clamping rod 7, so that a certain angle is formed between the clamping block A1 and the clamping block B13, the clamping block A1 and the clamping block B13 are separated from the gasket 9, and the gaskets at other positions are installed in the mode.
To sum up, the utility model relates to a nuclear power station diesel engine high pressure oil pump overhauls device has and makes simply, does not have complicated structure, and low in manufacturing cost will need many people cooperation, complicated work to simplify to single, simple work, very big improvement maintenance efficiency, for the maintenance of nuclear power diesel engine high pressure oil pump relevant equipment has practiced thrift the plenty of time, the equipment safety of also better assurance simultaneously.
The above detailed description of the embodiments of the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art.
Claims (9)
1. The utility model provides a nuclear power station diesel engine high pressure oil pump overhauls device which characterized in that includes: the clamping device comprises a left clamping part, a right clamping part, a gasket (9), a spring B (8) and a bolt-nut assembly (5);
the right clamping portion includes: the clamping device comprises a clamping block A (1), a right clamping rod (4), a right pull ring (6) and a right fork-shaped connecting piece (11); a right clamping rod (4) is welded between the clamping block A (1) and the right fork-shaped connecting piece (11); a right pull ring (6) is welded on the right clamping rod (4);
the left clamping part comprises: a clamping block B (13), a left clamping rod (7), a left pull ring (14) and a left connecting ring (12); a left clamping rod (7) is welded between the clamping block B (13) and the left connecting ring (12); a left pull ring (14) is welded on the left clamping rod (7);
a left connecting ring (12) of the left clamping part and a right forked connecting piece (11) of the right clamping part are concentrically arranged and are in threaded connection through a bolt and nut assembly (5), and a gasket (9) is arranged between the clamping block A (1) and the clamping block B (13); the middle positions of the right clamping rod (4) and the left clamping rod (7) are connected through a spring B (8).
2. The high-pressure oil pump overhauling device for the diesel engine of the nuclear power station as set forth in claim 1, wherein: the clamping block A (1) is also provided with a right limiting guide post (10), a right limiting block (3) and a spring A (2); the right limiting guide post (10) is welded on the clamping block A (1), and a spring A (2) is sleeved on the right limiting guide post (10) in a surrounding manner; the top of the spring A (2) is connected with the right limiting block (3) in a spot welding mode.
3. The overhaul device for the high-pressure oil pump of the diesel engine of the nuclear power station as claimed in claim 2, characterized in that: the clamping block B (13) is also provided with a left limiting guide post (15), a left limiting block (16) and a spring C (17); the left limiting guide post (15) is welded on the clamping block B (13), and a spring C (17) is sleeved on the left limiting guide post (15) in a surrounding manner; the top of the spring C (17) is connected with the left limiting block (16) in a spot welding mode.
4. The overhaul device for the high-pressure oil pump of the diesel engine of the nuclear power station as claimed in claim 3, characterized in that: and the left limiting guide post (15) and the right limiting guide post (10) are symmetrically welded on the clamping block A (1) and the clamping block B (13) respectively.
5. The overhaul device for the high-pressure oil pump of the diesel engine of the nuclear power station as claimed in claim 4, wherein: the spring A (2) moves along the direction of the right limiting guide post (10); the spring C (17) moves along the direction of the left limit guide post (15).
6. The overhaul device for the high-pressure oil pump of the diesel engine of the nuclear power station as claimed in claim 5, wherein: the clamping block A (1) and the clamping block B (13) are both of a cuboid plate type structure integrally; the mutually symmetrical right-angle positions of the clamping block A (1) and the clamping block B (13) are provided with fan-shaped notches with the same radian.
7. The high-pressure oil pump overhauling device for the diesel engine of the nuclear power station as set forth in claim 1, wherein: the gasket (9) is clamped and fixed through fan-shaped notches in the clamping block A (1) and the clamping block B (13), and the clamping and fixing position of the gasket (9) can be slightly adjusted through the spring B (8).
8. The overhaul device for the high-pressure oil pump of the diesel engine of the nuclear power station as claimed in claim 6, wherein: the radian of the sector notches on the clamping block A (1) and the clamping block B (13) are matched with the radian of the shape of the gasket (9), and the thicknesses of the clamping block A (1) and the clamping block B (13) are slightly smaller than the thickness of the gasket (9).
9. The high-pressure oil pump overhauling device for the diesel engine of the nuclear power station as set forth in claim 1, wherein: the middle positions of the right side clamping rod (4) and the left side clamping rod (7) are symmetrically welded with a spring hook, and two ends of a spring B (8) are hung on the spring hooks of the right side clamping rod (4) and the left side clamping rod (7) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120682209.6U CN215201588U (en) | 2021-04-02 | 2021-04-02 | Nuclear power station diesel engine high pressure oil pump overhauls device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120682209.6U CN215201588U (en) | 2021-04-02 | 2021-04-02 | Nuclear power station diesel engine high pressure oil pump overhauls device |
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| CN215201588U true CN215201588U (en) | 2021-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975789A (en) * | 2021-04-02 | 2021-06-18 | 江苏核电有限公司 | Nuclear power station diesel engine high-pressure oil pump overhauling device and overhauling method thereof |
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2021
- 2021-04-02 CN CN202120682209.6U patent/CN215201588U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975789A (en) * | 2021-04-02 | 2021-06-18 | 江苏核电有限公司 | Nuclear power station diesel engine high-pressure oil pump overhauling device and overhauling method thereof |
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