High-pressure and high-temperature plunger pump packing box
By using an octagonal pad, cooling chamber and injection oil system in the plunger pump, the problem of degradation of sealing performance of the plunger pump sealing working chamber under high pressure and high temperature is solved, and efficient sealing and long life in the filler box is achieved, reducing maintenance cost.
Patent Information
- Application Number
- CN202323199789.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-11-27
AI Technical Summary
The sealing working chamber in existing plunger pumps is sealed with soft packing, which leads to axial friction and radial friction under high pressure and high temperature environments, resulting in severe wear of fillers, reduced sealing performance, leakage of working media, increased maintenance workload and labor cost.
A high-pressure and high-temperature plunger pump packing box is designed, which uses an octagonal pad to connect to the hydraulic end, and a cooling chamber and an injection oil system are set up. The temperature of the packing box is reduced through cooling water and lubricating oil, forming a clean chamber and an oil film to prevent dry friction. , extend the service life of the filler and combined filler, and flush away the leakage medium by rinsing oil.
It effectively improves the sealing performance and service life in the filler box, reduces mutual friction and service temperature, significantly reduces maintenance costs, and extends the service life of the filler and plunger.
Smart Images
Figure CN222276910U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plunger pumps, in particular to a high-pressure and high-temperature plunger pump stuffing box. Background Art
[0002] The plunger pump changes the volume of the sealed working chamber through the reciprocating motion of the plunger in the cylinder body, thereby pressurizing and conveying the working medium.
[0003] At present, packing seals are mainly used to seal the working chamber of plunger pumps. Since the packing is a soft packing seal, it is subjected to large axial friction and radial friction during operation, resulting in severe wear of the packing, increased gap between the packing and the plunger, reduced sealing performance of the packing, leakage of working medium, and increased pump maintenance workload and labor costs. Utility Model Content
[0004] The utility model aims to provide a high-pressure and high-temperature plunger pump stuffing box, aiming to solve the technical problems that in the prior art, a stuffing seal is mainly used for sealing the working chamber of a plunger pump. Since the stuffing is a soft stuffing seal, it is subjected to large axial friction and radial friction during operation, resulting in severe wear of the stuffing, an increase in the gap between the stuffing and the plunger, reduced sealing performance of the stuffing, leakage of the working medium, and increased pump maintenance workload and labor costs.
[0005] To achieve the above-mentioned purpose, the utility model adopts a high-pressure and high-temperature plunger pump stuffing box, including a stuffing box body, a plunger, a stuffing box cover, a stuffing screw ring, a locking bolt, a spring, a first combination stuffing and a second combination stuffing, the stuffing box body is connected to the stuffing box cover, the plunger is arranged in the stuffing box body, the spring is also arranged in the stuffing box body, the first combination stuffing is arranged between the plunger and the stuffing box body, the two ends of the spring are respectively connected to the stuffing box body and the first combination stuffing, the spring presses the first combination stuffing, the second combination stuffing is arranged in the stuffing box cover and locked by the stuffing screw ring, an octagonal pad is arranged at the connection between the stuffing box body and the hydraulic end, and the locking bolt is arranged on the stuffing screw ring.
[0006] The stuffing box body is provided with a first hole and a second hole, the first hole and the second hole are respectively the cooling water inlet and outlet of the stuffing box body, and the stuffing box body is provided with a cooling cavity, which is connected with the first hole and the second hole.
[0007] Wherein, the stuffing box body is also provided with a third hole, and the third hole is the injection oil port on the stuffing box body.
[0008] Wherein, the stuffing box body is also provided with a fourth hole, and the fourth hole is a lubricating oil injection port.
[0009] Wherein, a fifth hole and a sixth hole are arranged on the stuffing box gland, and the fifth hole and the sixth hole are respectively the inlet and the outlet of the stuffing box body flushing oil.
[0010] The utility model discloses a high-pressure and high-temperature plunger pump stuffing box, which is connected to the original hydraulic end through the octagonal pad, so as to effectively prevent the original O-ring sealing failure under high temperature environment, and through the provision of the first hole, the second hole and the cooling cavity, the first hole is used to continuously supply water to the cooling cavity, so as to reduce the temperature of the stuffing box body and increase the service life of the first stuffing and the second combined stuffing. The third hole is externally connected to the injection system, and the injection oil system continuously injects flushing oil into the stuffing box body through the third hole, so as to form a clean cavity in front of the main sealing stuffing, so as to prevent medium particles from entering the stuffing box body and prevent the particles from wearing the plunger and the first combined stuffing and the second combined stuffing. The fourth hole is externally connected to the oil injection system, and the oil injection system injects lubricating oil into the stuffing box body, so as to form an oil film between the plunger and the first combined stuffing and the second combined stuffing, so as to lubricate the plunger, the first combined stuffing and the second combined stuffing. , preventing dry friction between the plunger and the first combination packing and the second combination packing, effectively improving the service life of the first combination packing and the second combination packing, the fifth hole and the sixth hole are externally connected with flushing oil, which is injected into the packing box body to cool the surface temperature of the plunger and lubricate the first combination packing and the second combination packing at the same time. After the seals of the first combination packing and the second combination packing fail after long-term operation, the flushing oil can also wash away the leakage medium to prevent the wear of the plunger. In this way, the problem of large axial friction and radial friction during operation, resulting in serious wear of the packing, increased gap between the packing and the plunger, reduced sealing performance of the packing, leakage of working medium, increased maintenance workload and labor cost of the pump is solved, and the mutual friction in the packing box body can be effectively reduced, the use temperature can be reduced, the service life of the first combination packing, the second combination packing and the plunger can be significantly improved, and the maintenance cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1 The utility model is a structural schematic diagram of a high-pressure and high-temperature plunger pump stuffing box.
[0013] Figure 2 The utility model is a schematic diagram of the internal structure of a high-pressure and high-temperature plunger pump stuffing box.
[0014] 1-stuffing box body, 2-plunger, 3-stuffing box gland, 4-stuffing screw ring, 5-locking bolt, 6-spring, 7-first combination stuffing, 8-second combination stuffing, 9-octagonal pad, 10-first hole, 11-second hole, 12-third hole, 13-fourth hole, 14-fifth hole, 15-sixth hole, 16-cooling chamber. DETAILED DESCRIPTION
[0015] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0016] See also Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of a high-pressure and high-temperature plunger pump stuffing box of the utility model. Figure 2 It is a schematic diagram of the internal structure of a high-pressure and high-temperature plunger pump stuffing box of the utility model. The utility model provides a high-pressure and high-temperature plunger 2 pump stuffing box: including a stuffing box body 1, a plunger 2, a stuffing box gland 3, a stuffing screw ring 4, a locking bolt 5, a spring 6, a first combined stuffing 7 and a second combined stuffing 8. The stuffing box body 1 is connected to the stuffing box gland 3, the plunger 2 is arranged in the stuffing box body 1, and the spring 6 is also arranged in the stuffing box body 1. The first combined stuffing 7 is arranged between the plunger 2 and the stuffing box body 1, and the two ends of the spring 6 are respectively connected to the stuffing box body 1 and the first combined stuffing 7. The spring 6 presses the first combined stuffing 7, and the second combined stuffing 8 is arranged in the stuffing box gland 3 and locked by the stuffing screw ring 4. An octagonal pad 9 is arranged at the connection between the stuffing box body 1 and the hydraulic end, and the locking bolt 5 is arranged on the stuffing screw ring 4;
[0017] The stuffing box body 1 is provided with a first hole 10 and a second hole 11, the first hole 10 and the second hole 11 are respectively the cooling water inlet and outlet of the stuffing box body 1, and the stuffing box body 1 is provided with a cooling cavity 16, the cooling cavity 16 is communicated with the first hole 10 and the second hole 11;
[0018] The stuffing box body 1 is also provided with a third hole 12, and the third hole 12 is an injection oil port on the stuffing box body 1;
[0019] The stuffing box body 1 is also provided with a fourth hole 13, and the fourth hole 13 is a lubricating oil injection port;
[0020] The stuffing box gland 3 is provided with a fifth hole 14 and a sixth hole 15, and the fifth hole 14 and the sixth hole 15 are respectively the inlet and outlet of the flushing oil of the stuffing box body 1;
[0021] In this embodiment, the octagonal pad 9 is connected to the original liquid force end to effectively prevent the original O-ring sealing failure in a high temperature environment. By setting the first hole 10, the second hole 11 and the cooling chamber 16, the first hole 10 is used to continuously supply water to the cooling chamber 16, thereby reducing the temperature of the stuffing box body 1 and increasing the service life of the first stuffing and the second combined stuffing 8. The third hole 12 is externally connected to an injection system, and the injection oil system continuously injects flushing oil into the stuffing box body 1 through the third hole 12 to form a clean chamber in front of the main sealing stuffing, thereby preventing medium particles from entering the stuffing box body 1 and preventing particles from wearing the plunger 2 and the first combined stuffing 7 and the second combined stuffing. The fourth hole 13 is externally connected to an oil injection system, and the oil injection system injects lubricating oil into the stuffing box body 1 to form an oil film between the plunger 2 and the first combined stuffing 7 and the second combined stuffing 8 to lubricate the plunger 2, the first combined stuffing 7 and the second combined stuffing 8. Prevent dry friction between the plunger 2 and the first combined filler 7 and the second combined filler 8, effectively improve the service life of the first combined filler 7 and the second combined filler 8, the fifth hole 14 and the sixth hole 15 are externally connected to flushing oil, which is injected into the filler box body 1 to cool the surface temperature of the plunger 2 and lubricate the first combined filler 7 and the second combined filler 8 at the same time. After the seal of the first combined filler 7 and the second combined filler 8 fails during long-term operation, the flushing oil can also wash away the leakage medium to prevent the wear of the plunger 2. In this way, the problem of large axial friction and radial friction during operation, resulting in serious wear of the filler, increased gap between the filler and the plunger 2, reduced sealing performance of the filler, leakage of working medium, increased maintenance workload and labor cost of the pump is solved, and the mutual friction in the filler box body 1 can be effectively reduced, the use temperature can be reduced, the service life of the first combined filler 7 and the second combined filler 8 and the plunger 2 can be significantly improved, and the maintenance cost can be reduced.
[0022] The beneficial effects of the utility model are as follows: 1. It can reduce the temperature of the stuffing box body 1, increase the service life of the first stuffing and the second combined stuffing 8, and improve the sealing performance of the stuffing; 2. It can form a clean cavity in front of the main sealing stuffing to prevent medium particles from entering the stuffing box body 1, and prevent the particles from wearing the plunger 2 and the first combined stuffing 7 and the second combined stuffing; 3. It can lubricate the plunger 2, the first combined stuffing 7 and the second combined stuffing 8, prevent dry friction between the plunger 2 and the first combined stuffing 7 and the second combined stuffing 8, and effectively increase the service life of the first combined stuffing 7 and the second combined stuffing 8; 4. It can cool the surface temperature of the plunger 2 and lubricate the first combined stuffing 7 and the second combined stuffing 8 at the same time; 5. After the seals of the first combined stuffing 7 and the second combined stuffing fail, the leaked medium can be flushed away to prevent the wear of the plunger 2.
[0023] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. A high-pressure and high-temperature plunger pump stuffing box, characterized in that: It includes a stuffing box body, a plunger, a stuffing box gland, a stuffing screw ring, a locking bolt, a spring, a first combination stuffing and a second combination stuffing, the stuffing box body is connected to the stuffing box gland, the plunger is arranged in the stuffing box body, the spring is also arranged in the stuffing box body, the first combination stuffing is arranged between the plunger and the stuffing box body, the two ends of the spring are respectively connected to the stuffing box body and the first combination stuffing, the spring presses the first combination stuffing, the second combination stuffing is arranged in the stuffing box gland and locked by the stuffing screw ring, an octagonal gasket is arranged at the connection between the stuffing box body and the hydraulic end, and the locking bolt is arranged on the stuffing screw ring.
2. The high-pressure and high-temperature plunger pump stuffing box according to claim 1, characterized in that: The stuffing box body is provided with a first hole and a second hole, the first hole and the second hole are respectively the cooling water inlet and outlet of the stuffing box body, and the stuffing box body is provided with a cooling cavity, the cooling cavity is communicated with the first hole and the second hole.
3. The high-pressure and high-temperature plunger pump stuffing box according to claim 2, characterized in that: The stuffing box body is also provided with a third hole, and the third hole is an injection oil port on the stuffing box body.
4. The high-pressure and high-temperature plunger pump stuffing box according to claim 3, characterized in that: The stuffing box body is also provided with a fourth hole, which is a lubricating oil injection port.
5. The high-pressure and high-temperature plunger pump stuffing box according to claim 4, characterized in that: The stuffing box gland is provided with a fifth hole and a sixth hole, and the fifth hole and the sixth hole are respectively the inlet and the outlet of the stuffing box body flushing oil.