CN116066560A - Ultrahigh-pressure reciprocating pump and filler replacement process thereof - Google Patents
Ultrahigh-pressure reciprocating pump and filler replacement process thereof Download PDFInfo
- Publication number
- CN116066560A CN116066560A CN202211730538.9A CN202211730538A CN116066560A CN 116066560 A CN116066560 A CN 116066560A CN 202211730538 A CN202211730538 A CN 202211730538A CN 116066560 A CN116066560 A CN 116066560A
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- China
- Prior art keywords
- packing
- plunger
- cylinder body
- filler
- reciprocating pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides an ultrahigh pressure reciprocating pump and a filler replacement process thereof, wherein the ultrahigh pressure reciprocating pump comprises a power assembly, a hydraulic assembly and a sealing assembly, the power assembly comprises a plunger and a middle rod, the hydraulic assembly comprises a cylinder body and a liquid inlet valve box arranged in the middle of the cylinder body, the sealing assembly is partially inserted into the cylinder body, and the sealing assembly is detachably and fixedly connected with the cylinder body; the middle part of the cylinder body and the sealing component is provided with a central channel, the plunger penetrates through the liquid inlet valve box and the sealing component along the central channel, and one end of the plunger extending out of the sealing component is detachably fixedly connected with one end of the middle rod. When the packing needs to be replaced, the sealing elements such as the packing can be inspected to be replaced or parts can be damaged by independently disconnecting the plunger and the middle rod and integrally removing the sealing assembly without dismantling the cylinder body. The method does not need to dismantle the cylinder body, greatly lightens the maintenance workload, ensures that the filler replacement process is quicker and more efficient, and ensures the average daily operation time of the ultra-high pressure pump unit.
Description
Technical Field
The invention relates to the field of maintenance of ultrahigh pressure reciprocating pumps, in particular to an ultrahigh pressure reciprocating pump and a filler replacement process thereof.
Background
The ultrahigh pressure reciprocating pump is one of important equipment in the fields of industrial equipment and civil equipment, is widely applied to the fields of petroleum, chemical industry, chemical fertilizers, oilfield water injection, high-pressure cleaning and descaling and the like, and is used as a booster pump and high-pressure water flow power equipment. At present, the ultra-high pressure reciprocating pump is used as a new environment-friendly product, namely a heart component of a high-pressure cleaning rust removing unit, is developed more rapidly, and the design pressure of the ultra-high pressure reciprocating pump reaches more than 300MPa even in order to achieve a good rust removing effect. With the following, the working conditions of the sealing elements such as the filler are more and more severe, and the service life is shorter and shorter.
Therefore, the filler replacement is the most common maintenance work in the use process of the ultra-high pressure reciprocating pump, and is one of the most labor-intensive work of maintenance personnel. The traditional design of the hydraulic end of the ultrahigh pressure reciprocating pump and the maintenance and replacement of the filler all need to remove the whole hydraulic end to replace the filler, the workload is large, the quick repair can not be realized, the working efficiency of the ultrahigh pressure rust removing unit is low, and the average daily operation time can not meet the ideal requirement. Therefore, a process capable of rapidly replacing the packing of the ultra-high pressure reciprocating pump is urgently needed.
Disclosure of Invention
Aiming at the problem that the working efficiency is low because the whole hydraulic end needs to be dismantled when the filling material is replaced by the traditional ultrahigh pressure reciprocating pump, the invention provides the ultrahigh pressure reciprocating pump and the filling material replacing process thereof.
The present invention achieves the above technical object by the following means.
An ultrahigh pressure reciprocating pump is characterized by comprising a power assembly, a hydraulic assembly and a sealing assembly;
the power assembly comprises a plunger and an intermediate rod;
the hydraulic assembly comprises a cylinder body and a liquid inlet valve box arranged in the middle of the cylinder body;
the sealing component is inserted into the cylinder body and is detachably and fixedly connected with the cylinder body; the central channel is arranged in the middle of the liquid inlet valve box and the sealing component, the plunger penetrates through the liquid inlet valve box and the sealing component along the central channel, and one end of the plunger extending out of the sealing component is detachably fixedly connected with one end of the middle rod.
Further, the sealing assembly comprises a stuffing box body, a stuffing gland, a sleeve, a spring, a supporting ring, stuffing and a guide sleeve;
the sleeve is arranged outside the central channel, one end of the sleeve is seated on the spring, a filler is arranged between the other end of the sleeve and the filler gland, a supporting ring for supporting the filler is arranged between the filler and the sleeve, and a guide sleeve for guiding the plunger is arranged between the filler and the filler gland;
the packing box body and the packing gland are positioned outside the sleeve, the packing box body is partially inserted into the cylinder body, the packing gland is tightly attached to one side, far away from the cylinder body, of the packing box body, and the packing gland is fixedly connected with the cylinder body and the packing box body through a first bolt.
Further, the plunger and the middle rod are detachably connected through a plunger joint; the plunger joint is composed of two pressing parts, a central through hole for accommodating the plunger and the middle rod is formed in each pressing part, and the two pressing parts are pressed and fixed through a second bolt.
Further, a packing box disassembly hole matched with the first bolt is formed in the packing box body and the packing gland, and the packing box disassembly hole extends to the surface of the cylinder body and is responsible for separating the cylinder body from the packing box body.
Further, one section of the packing box disassembly hole on the packing press cover is a through hole, and one section of the packing box disassembly hole on the packing box body is a threaded hole.
Further, a low-pressure sealing ring is arranged between the packing gland and the plunger.
Further, a plurality of monitoring electrodes are arranged between the low-pressure sealing ring and the guide sleeve, and the monitoring electrodes are connected with the processing module circuit and are responsible for monitoring the leakage quantity of the fluid.
The filler replacement process of the ultrahigh-pressure reciprocating pump, which is characterized by comprising the following steps of:
s1: removing the second bolt, and separating the two compression parts of the plunger joint to separate the plunger from the middle rod;
s2: removing the first bolt, screwing the removed first bolt into the packing box removing hole and pushing the packing box to the cylinder until the packing box body is separated from the cylinder;
s3: pulling out the plunger, removing the first bolt in the packing box disassembly hole, and separating the packing box body, the packing gland and the sleeve;
s4: taking out the guide sleeve, the filler and the support ring, and replacing the new filler;
s5: and (5) reassembling in reverse order.
Further, in step S2, before removing the first bolt, a jigger is required to move the intermediate rod to the rear dead center, so that enough space is left for removing the stuffing box.
Further, in step S4, besides replacing the filler, the use condition of the low-pressure sealing ring needs to be checked, and the aged/damaged low-pressure sealing ring needs to be replaced in time.
Compared with the prior art, the invention has the beneficial effects that:
1. after the packing is worn and failed, the ultra-high pressure reciprocating pump can be used for independently detaching the plunger and the middle rod and integrally detaching the packing box under the condition of not detaching the cylinder body, and then checking and replacing sealing elements such as the packing or damaged parts. The method does not need to dismantle the cylinder body, greatly lightens the maintenance workload, ensures that the filler replacement process is quicker and more efficient, and ensures the average daily operation time of the ultra-high pressure pump unit.
2. The low-pressure sealing ring can seal leaked fluid when the filler slightly leaks, so that the liquid cannot leak outwards. The abrasion degree of the filler can be indirectly judged by arranging a monitoring electrode between the low-pressure seal and the filler to judge the leakage amount.
Drawings
Fig. 1 is a schematic structural diagram of an ultrahigh-pressure reciprocating pump according to embodiment 1 of the present invention.
101, a plunger joint; 102. a second bolt; 103. a plunger; 104. a spring; 105. a liquid inlet valve box; 106. a cylinder; 107. a stuffing box dismounting hole; 108. an intermediate lever; 201. a first bolt; 202. a packing gland; 203. a stuffing box body; 204. a sleeve; 205. a support ring; 206. a filler; 207. a guide sleeve; 208. a low pressure seal ring.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments, but the scope of the invention is not limited thereto.
Fig. 1 is a schematic structural diagram of an ultrahigh-pressure reciprocating pump according to the embodiment, which includes a power assembly, a hydraulic assembly and a sealing assembly.
The power assembly includes a plunger 103 and an intermediate rod 108.
The hydraulic assembly comprises a cylinder 106 and a liquid inlet valve box 105 arranged in the middle of the cylinder 106.
The seal assembly includes a stuffing box 203, a stuffing gland 202, a sleeve 204, a spring 104, a support ring 205, a stuffing 206, and a guide sleeve 207.
The packing box body 203 is partially inserted into the cylinder 106, the packing gland 202 is tightly attached to one side, far away from the cylinder 106, of the packing box body 203, concentricity of the packing box body 203 and the packing gland 202 is guaranteed through a matching surface, and the packing box body 203 and the cylinder 106 are fixedly connected through a first bolt 201. The central channel is arranged in the middle of the liquid inlet valve box 105, the stuffing box 203 and the stuffing gland 202, the plunger 103 penetrates through the liquid inlet valve box 105, the stuffing box 203 and the stuffing gland 202 along the central channel, and one end of the plunger 103 extending out of the stuffing gland 202 is fixedly connected with one end of the middle rod 108 through the plunger joint 101. The plunger joint 101 is composed of two pressing parts, the pressing parts are provided with central through holes for accommodating the plunger 103 and the middle rod 108, and the two pressing parts are pressed and fixed through the second bolt 102.
The outside of the central channel is provided with a sleeve 204, one end of the sleeve 204 sits on the spring 104, a filler 206 for filling the gap between the plunger 103 and the stuffing box 203 is arranged between the other end of the sleeve 204 and the stuffing gland 202, a supporting ring 205 for supporting the filler 206 is arranged between the filler 206 and the sleeve 204, and a guide sleeve 207 for guiding the plunger 103 is arranged between the filler 206 and the stuffing gland 202.
The packing box body 203 and the packing gland 202 are provided with packing box detaching holes 107 adapted to the first bolts 201, and the packing box detaching holes 107 extend to the surface of the cylinder 106 and are responsible for separating the cylinder 106 from the packing box body 203. The section of the packing box disassembly hole 107 on the packing gland 202 is a through hole, and the section on the packing box body 203 is a threaded hole.
A low-pressure sealing ring 208 is arranged between the packing gland 202 and the plunger 103, a plurality of monitoring electrodes are arranged between the low-pressure sealing ring 208 and the packing 206, and the monitoring electrodes are connected with a processing module circuit and are responsible for monitoring the leakage amount of fluid, so that the abrasion degree of the packing 206 is indirectly judged.
When the filler needs to be replaced, the filler replacement process of the ultra-high pressure reciprocating pump described in this embodiment 1 is as follows:
s1: removing the second bolt 102, separating the two pressing portions of the plunger joint 101 so that the plunger 103 is disengaged from the intermediate lever 108;
s2: the jigger runs the intermediate rod 108 to the rear dead center, leaving enough room for the stuffing box to be removed later. Then removing the first bolt 201, screwing the removed first bolt 201 into the stuffing box removing hole 107 and pushing the stuffing box body 203 towards the cylinder 106 until the stuffing box body 203 is separated from the cylinder 106;
s3: pulling out the plunger 103, removing the first bolt 201 in the packing box removing hole 107, and separating the packing box body 203, the packing gland 202 and the sleeve 204;
s4: taking out the guide sleeve 207, the packing 206 and the support ring 205, replacing the new packing 206, and checking other sealing elements such as low-pressure sealing and other sealing rings together, wherein if other sealing elements are damaged or aged, the sealing elements should be replaced together, so that leakage influencing normal use is avoided again after installation;
s5: and (5) reassembling in reverse order.
The packing replacement process is carried out without dismantling the hydraulic end cylinder body, by separately disengaging the plunger and the intermediate rod, integrally dismantling the packing box, and then checking and replacing sealing elements such as packing or damaging parts. The method has the advantages of no need of dismantling the cylinder body, simple working procedure, small maintenance workload, and more rapid and efficient filler replacement process compared with the traditional ultra-high pressure reciprocating pump, and meanwhile, the average daily operation time of the ultra-high pressure pump unit is effectively ensured.
The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
Claims (10)
1. An ultrahigh pressure reciprocating pump is characterized by comprising a power assembly, a hydraulic assembly and a sealing assembly;
the power assembly comprises a plunger (103) and an intermediate rod (108);
the hydraulic assembly comprises a cylinder body (106) and a liquid inlet valve box (105) arranged in the middle of the cylinder body (106);
the sealing component is partially inserted into the cylinder body (106) and is detachably and fixedly connected with the cylinder body (106); the central channel is formed in the middle of the liquid inlet valve box (105) and the sealing component, the plunger (103) penetrates through the liquid inlet valve box (105) and the sealing component along the central channel, and one end of the plunger (103) extending out of the sealing component is detachably fixedly connected with one end of the middle rod (108).
2. The ultra-high pressure reciprocating pump of claim 1, wherein the seal assembly comprises a stuffing box (203), a stuffing gland (202), a sleeve (204), a spring (104), a support ring (205), a stuffing (206), and a guide sleeve (207);
the sleeve (204) is arranged outside the central channel, one end of the sleeve (204) is seated on the spring (104), a filler (206) is arranged between the other end of the sleeve (204) and the filler gland (202), a supporting ring (205) for supporting the filler (206) is arranged between the filler (206) and the sleeve (204), and a guide sleeve (207) for guiding the plunger (103) is arranged between the filler (206) and the filler gland (202);
the packing box body (203) and the packing gland (202) are positioned outside the sleeve (204), the packing box body (203) is partially inserted into the cylinder body (106), the packing gland (202) and one side, far away from the cylinder body (106), of the packing box body (203) are tightly attached, and the packing box body (203) is fixedly connected with the cylinder body (106) and the packing box body (203) through the first bolt (201).
3. The ultra-high pressure reciprocating pump according to claim 1, characterized in that the plunger (103) and the intermediate rod (108) are detachably connected by a plunger joint (101); the plunger joint (101) is composed of two pressing parts, the pressing parts are provided with central through holes for accommodating the plunger (103) and the middle rod (108), and the two pressing parts are pressed and fixed through the second bolts (102).
4. The ultra-high pressure reciprocating pump according to claim 2, characterized in that a packing box disassembly hole (107) matched with the first bolt (201) is formed on the packing box body (203) and the packing gland (202), the packing box disassembly hole (107) extends to the surface of the cylinder body (106) and is responsible for separating the cylinder body (106) from the packing box body (203).
5. The ultra-high pressure reciprocating pump of claim 4, wherein a section of the packing removal hole (107) on the packing gland (202) is a through hole and a section on the packing body (203) is a threaded hole.
6. The ultra-high pressure reciprocating pump of claim 2, wherein a low pressure seal ring (208) is provided between the packing gland (202) and the plunger (103).
7. The ultra-high pressure reciprocating pump according to claim 5, wherein a plurality of monitoring electrodes are arranged between the low pressure sealing ring (208) and the guide sleeve (207), and the monitoring electrodes are connected with the processing module circuit and are responsible for monitoring the leakage amount of the fluid.
8. The filler replacement process of an ultrahigh-pressure reciprocating pump according to any one of claims 1 to 7, characterized by comprising the steps of:
s1: removing the second bolt (102), separating the two pressing parts of the plunger joint (101) so that the plunger (103) is separated from the middle rod (108);
s2: removing the first bolt (201), screwing the removed first bolt (201) into the stuffing box removing hole (107) and pushing the stuffing box to the cylinder (106) until the stuffing box body (203) is separated from the cylinder (106);
s3: pulling out the plunger (103), removing the first bolt (201) in the packing box removing hole (107), and separating the packing box body (203), the packing gland (202) and the sleeve (204);
s4: taking out the guide sleeve (207), the filler (206) and the support ring (205) and replacing the filler (206);
s5: and (5) reassembling in reverse order.
9. The packing replacement process of the ultra-high pressure reciprocating pump according to claim 8, wherein in step S2, a jigger is required to move the intermediate rod (108) to the rear dead center before removing the first bolt (201), leaving a sufficient space for removing the packing box body (203) later.
10. The packing replacement process of the ultra-high pressure reciprocating pump according to claim 8, wherein in addition to the packing (206) replacement in step S4, the use condition of the low pressure seal ring (208) is checked and the aged/damaged low pressure seal ring (208) is replaced in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211730538.9A CN116066560A (en) | 2022-12-30 | 2022-12-30 | Ultrahigh-pressure reciprocating pump and filler replacement process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211730538.9A CN116066560A (en) | 2022-12-30 | 2022-12-30 | Ultrahigh-pressure reciprocating pump and filler replacement process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116066560A true CN116066560A (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211730538.9A Pending CN116066560A (en) | 2022-12-30 | 2022-12-30 | Ultrahigh-pressure reciprocating pump and filler replacement process thereof |
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| CN (1) | CN116066560A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345611A (en) * | 2023-10-25 | 2024-01-05 | 上海迈克孚生物科技有限公司 | Automatic compensation type ultrahigh pressure fluid static sealing device |
-
2022
- 2022-12-30 CN CN202211730538.9A patent/CN116066560A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345611A (en) * | 2023-10-25 | 2024-01-05 | 上海迈克孚生物科技有限公司 | Automatic compensation type ultrahigh pressure fluid static sealing device |
| CN117345611B (en) * | 2023-10-25 | 2024-02-20 | 上海迈克孚生物科技有限公司 | Automatic compensation type ultrahigh pressure fluid static sealing device |
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