CN204692072U - A kind of reciprocating plunger pump - Google Patents
A kind of reciprocating plunger pump Download PDFInfo
- Publication number
- CN204692072U CN204692072U CN201520240873.XU CN201520240873U CN204692072U CN 204692072 U CN204692072 U CN 204692072U CN 201520240873 U CN201520240873 U CN 201520240873U CN 204692072 U CN204692072 U CN 204692072U
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- oil
- stuffing box
- box body
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- tank
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Abstract
The utility model relates to reciprocating plunger pump, comprise stuffing box assembly, this stuffing box assembly comprises the stuffing box body with inner volume, it is characterized in that: below described stuffing box body, be provided with handshaking system, this handshaking system comprises the swap tank (9) that lubricant oil is filled in inside, this swap tank (9) is connected with the inner volume of stuffing box body, in addition, described swap tank (9) is communicated with the feed liquor pipe network of plunger pump by an one-way valve (10), and the working pressure of described one-way valve (10) should be greater than the inlet pressure of reciprocating plunger pump.Compared with prior art, the utility model has the advantage of: by arranging handshaking system below stuffing box body, can guarantee that the parts such as the plunger packing of stuffing box assembly inside remain in lubricant oil and working, improve the life-span and lower friction power loss.
Description
Technical field
The utility model relates to a kind of reciprocating plunger pump.
Background technique
The stuffing box assembly of reciprocating plunger pump is the transition seal region that Reciprocatin pump power end connects with fluid end, is also the sealed bladder producing degree of vacuum during power end back and forth does work, primarily of compositions such as stuffing box, plunger, guide ring, filler, block rings.General stuffing box is arranged in the plane of the pump housing, and outer wall is positioned on the fuselage of power end, to ensure coaxality between power end and fluid end and parallelism.Take the air line in order to ensure plunger, to-and-fro motion between plunger and filler produces friction thus the sealing strip defined between filler, when plunger backward stroke time, liquid feed valve is opened, liquid discharging valve is closed, liquid sucks, and when plunger is toward front travel, liquid compression produces pressure, liquid discharging valve is opened, and liquid is discharged.The medium pressurized moved ahead when plunger in stuffing box, normally matches the quantity of filler according to pressure rating, 4,5,6 or more.But the more sealing strips of filler are longer, and heating carrys out self-friction, when sealing strip is long, friction power loss loss is large, and the too small pressure envelope of sealing strip incessantly, and leakage rate then can increase, sealing life shortens, and have dirty erosion medium to some especially, the leakage controlled between plunger packing is very important.During reciprocating plunger pump high pressure (> 25MPa), the plunger packing leakage rate in filler and back and forth middle low coefficient of friction are very important.Make the life-span of plunger packing exceed national high-class product standard or > within 3000 hours, must must consider to add lubricant oil between the friction of plunger and filler, this is a public opinion, directly can determine the life-span of main easily damaged parts and the efficiency of pump.So design a kind of stuffing box when conveying high-pressure band particle-liquid, run when pressure 25MPa-50MPa, one time of plunger packing life-span >=3000 hours, and the stuffing box structure of conventional design is unappeasable, and even the life-span just lost efficacy less than one month.The published patent No. of our company is the sealed letter assembly structure of ZL201220576068.0, pressure (≤25MPa) environment in being suitable for, life-span can reach 3000 hours, because axial, the radial direction of sealed letter body in the program are all furnished with oil-water balance hole (in hyperbaric chamber repairing), when pressure > 25MPa, find to there is region of stress concentration in cross hole in application, when this structure is applied in the environment of pressure > 25MPa height alternating stress, there will be letter body premature rupture failure phenomenon.Current domestic more oil extraction in oil field exploitation is to the later stage, oil well is all below 3000 meters, so the pressure of water injection pump also rises to 25-50MPa at any time, now a kind of withstand voltage >=25MPa of structure energy of stuffing box, a life-span of plunger packing can reach more than 3000 hours, national user thirsted for, and is the behave that current reciprocating plunger pump is extricated oneself from a plight.It is necessary for designing the anti-high pressure of a kind of energy wastewater media of resistance to particle long lifetime plunger pump stuffing letter assembly.
Model utility content
Technical problem to be solved in the utility model provides a kind of energy the anti-high pressure wastewater media of resistance to particle for above-mentioned prior art, and the reciprocating plunger pump that the life-span is longer.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of reciprocating plunger pump, comprise stuffing box assembly, this stuffing box assembly comprises the stuffing box body with inner volume, it is characterized in that: below described stuffing box body, be provided with handshaking system, this handshaking system comprises the swap tank that lubricant oil is filled in inside, this swap tank is connected with the inner volume of stuffing box body, in addition, described swap tank is communicated with the feed liquor pipe network of plunger pump by an one-way valve, and the working pressure of described one-way valve should be greater than the inlet pressure of reciprocating plunger pump.
Filled lubricant oil in swap tank, and plunger is when to-and-fro motion, a small amount of medium (sewage) flow in swap tank from the oil ring that main filler flows out through stuffing box, exchange with lubricant oil along with the medium leaked out flows in swap tank, because oil is different with sewage proportion, now oil is all the time toward rising, sewage sinks, raise along with swap tank inner capacities increases pressure, when swap tank pressure is greater than plunger pump inlet pressure, one-way valve is opened sewage and is returned in feed liquor pipeline, lubricant oil is now raised to the highest order of plunger to the plunger in stuffing box assembly by connecting tube, filler carries out immersion lubrication, therefore the filler in stuffing box assembly, guide ring, oil ring, plunger is all reciprocating in lubricant oil, guarantee that a service life of plunger packing improves.
The working pressure of described one-way valve is 1.25 times of the inlet pressure of reciprocating plunger pump.
Described swap tank is connected with the inner volume of stuffing box body by a connecting tube, and this connecting tube is provided with ball valve, and swap tank bottom is connected with a release blowdown valve.
Described swap tank top is connected with stop valve and pressure gauge.
Be provided with UNICOM's distributor in described swap tank, the cylinder body of plunger reciprocating pump can be connected by this UNICOM's distributor.
As improvement, stuffing box assembly comprises the main stuffing box body with inner volume, main stuffing box body inner chamber is equipped with plunger, main front guide ring is provided with between plunger and main stuffing box body inner chamber, main filler, the whole body has the oil ring of oilhole and secondary stuffing box body, guide ring before main, main filler, oil ring and secondary stuffing box body are all set in outside plunger, main stuffing box body inner chamber is provided with step, front end and this step of main front guide ring offset, before main, the rear end of guide ring and the front end of main filler offset, the front end of the rear end oil ring of main filler offsets, the rear end of oil ring and the front end of secondary stuffing box body offset, the rear end of secondary stuffing box body is connected with secondary filler clamping nut, secondary filler and secondary pressure ring is provided with between secondary stuffing box body and plunger, secondary filler and secondary pressure ring are also set in outside plunger, secondary stuffing box body inner chamber is provided with slave station rank, front end and this slave station rank of secondary filler offset, the secondary rear end of filler and the front end of secondary pressure ring offset, main stuffing box body rear end is connected with main filler clamping nut, described main stuffing box body inside has the duct be communicated with the oilhole of oil ring, and the outlet in this duct is communicated with swap tank through described connecting tube.Major-minor filler is divided into secondary seal be more conducive to compressing main filler, secondary filler, profit exchange place in the middle of oil ring, main filler by main filler clamping nut promote secondary stuffing box body to compress main filler guarantee plunger be in operation obtain lubricant oil at any time supplement lubricate, make plunger and main filling surface realize glossing under lubrication, make surface form sealing strip and increase the life-span.
Described handshaking Operation system setting is below main stuffing box or be arranged on the lower end of the fluid end pump housing, also often can arrange a set of handshaking system by cylinder.
Improve again, supplementary tank unit is provided with above described main stuffing box body, this supplementary tank unit comprises tank body, oil pump, shunting one-way valve and oil-level gauge, oil pump be arranged on tank body bottom, by motor direct connection, the entrance of shunting one-way valve is communicated with tank body, and the shunting outlet of one-way valve is communicated with the oilhole of oil ring, and oil-level gauge is arranged on tank body for measuring the oil level in tank body.
Described tank body inside has two oil storage regions spaced apart from each other---the first oil storage region and the second oil storage region, the inhalator of described oil pump and described oil-level gauge are arranged in the first oil storage region, and the decline information that oil pump measures oil level according to oil-level gauge carries out repairing; Described oily delivery side of pump and the second oil storage regional connectivity thus oil pressure in the second oil storage region are completed by oil pump, and the entrance of shunting one-way valve and the second oil storage regional connectivity, be connected with superpressure reflux valve between the second oil storage region and the first oil storage region.
The working pressure of described oil pump is 1.5 times of swap tank pressure.
Described first oil storage overlying regions is connected with oil filler and filler plug.
Compared with prior art, the utility model has the advantage of: by arranging handshaking system below stuffing box body, such reciprocating pump is in running, flow in swap tank when there being a small amount of medium, because the proportion of medium is greater than lubricant oil, now the two exchanges convection current, medium flow into lowest part, lubricant oil rises, the parts of stuffing box body inner volume are lubricated, raise along with the capacity in swap tank increases pressure, when swap tank internal pressure is greater than the inlet pressure of reciprocating plunger pump, one-way valve is opened automatically, at the medium that the ratio of lower curtate is heavy, enter in feed liquor pipe network, swap tank internal pressure is fallen to similar to plunger pump inlet pressure, such circulation is carried out, guarantee that the parts such as the plunger packing of stuffing box assembly inside remain in lubricant oil to work, improve the life-span and lower friction power loss.
Accompanying drawing explanation
Fig. 1 is the structural representation of the stuffing box assembly of plunger pump in the utility model embodiment;
Fig. 2 is the structural representation of handshaking system in the utility model embodiment;
Fig. 3 is the structural representation supplementing tank unit in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Reciprocating plunger pump as shown in Figure 1, comprise stuffing box assembly, this stuffing box assembly comprises the main stuffing box body 1 of middle part hollow, main stuffing box body 1 inner chamber is equipped with plunger 1, main front guide ring 3 is provided with between plunger 1 and main stuffing box body 1 inner chamber, main filler 4, the whole body has the oil ring 5 of oilhole and secondary stuffing box body 1-1, guide ring 3 before main, main filler 4, oil ring 5 and secondary stuffing box body 1-1 are all set in outside plunger 1, main stuffing box body 1 inner chamber is provided with step, front end and this step of main front guide ring 3 offset, before main, the rear end of guide ring 3 and the front end of main filler 4 offset, the front end of the rear end oil ring 5 of main filler 4 offsets, the rear end of oil ring 5 and the front end of secondary stuffing box body 1-1 offset, the rear end of secondary stuffing box body 1-1 is connected with secondary filler clamping nut 8-1, secondary filler 6 and secondary pressure ring 7 is provided with between secondary stuffing box body 1-1 and plunger 1, secondary filler 6 and secondary pressure ring 7 are also set in outside plunger 1, secondary stuffing box body 1-1 inner chamber is provided with slave station rank, front end and this slave station rank of secondary filler 6 offset, the secondary rear end of filler 6 and the front end of secondary pressure ring 7 offset, main stuffing box body 1 rear end is connected with main filler clamping nut 8.
In said structure, when main filler needs to compress, adjustable main filler clamping nut promotes secondary stuffing box body, the adjustable secondary filler clamping nut when secondary filler needs to compress, secondary filler and plunger seal can be made, like this major-minor filler is divided into secondary seal and is more conducive to compressing main filler, secondary filler.Profit exchange place in the middle of oil ring, main filler by main filler clamping nut promote secondary stuffing box body to compress main filler guarantee plunger be in operation obtain lubricant oil at any time supplement lubricate, make plunger and main filling surface realize glossing under lubrication, make surface form sealing strip and increase the life-span.Secondary filler carries out by secondary filler clamping nut the sealing adjusting plunger and secondary filler, exchanges the lubricant oil risen and ensures that plunger forms sealing strip with secondary filler as main filler, increase the life-span of plunger, filler by oil ring.
Handshaking system is provided with below described main stuffing box body 1, this handshaking system comprises the swap tank 9 that lubricant oil is filled in inside, connecting tube is had to connect between this swap tank 9 with main stuffing box body 1, described main stuffing box body 1 inside has the duct be communicated with the oilhole of oil ring 5, the outlet in this duct is communicated with swap tank 9 through described connecting tube, described connecting tube is provided with ball valve 15, swap tank 9 is by the feed liquor pipe network of an one-way valve 10 with plunger pump, swap tank 9 bottom is connected with a release blowdown valve 11, swap tank 9 top is connected with stop valve 14 and pressure gauge 13, UNICOM's distributor 12 is provided with in swap tank 9.
Supplementary tank unit is provided with above described main stuffing box body 1, this supplementary tank unit comprises tank body 20, oil pump 16, shunting one-way valve 17 and oil-level gauge 19, oil pump 16 be arranged on tank body 20 bottom, by motor direct connection, the entrance of shunting one-way valve 17 is communicated with tank body 20, the outlet of shunting one-way valve 17 is communicated with the oilhole of oil ring 5, and oil-level gauge 19 is arranged on tank body 20 for measuring the oil level in tank body 20.Described tank body 20 inside has two oil storage regions spaced apart from each other---the first oil storage region 20-1 and the second oil storage region 20-2, the inhalator of described oil pump 16 and described oil-level gauge 19 are arranged in the first oil storage region, and the decline information that oil pump 16 measures oil level according to oil-level gauge 19 carries out repairing; The outlet of oil pump 16 described in described oil pump 16 and the second oil storage regional connectivity thus oil pressure in the second oil storage region are completed by oil pump 16, the entrance of shunting one-way valve 17 and the second oil storage regional connectivity, be connected with superpressure reflux valve 18 between second oil storage region and the first oil storage region, described first oil storage overlying regions is connected with oil filler and filler plug.
The connection distributor 12 installed in described swap tank 9 is used for connecting the joint of oil ring bottom in each cylinder letter body.In described handshaking system, the working pressure of one-way valve 10 is 1.25 times of the inlet pressure of reciprocating plunger pump, that is when the pressure in swap tank 9 is greater than 1.25 times of the inlet pressure of reciprocating plunger pump, one-way valve 10 is opened, and automatic pressure-relieving is in the feed liquor pipe network of plunger pump; The manual release blowdown valve 11 that described swap tank 9 bottom is installed is used for regularly the sewage in swap tank 9 to be bled off oiling.When needs blowdown, carry out blowdown, oiling after ball valve 15 in handshaking system can being closed, do not need termination of pumping.In running, start to flow in swap tank 9 at oil ring place by plunger packing chamber when there being a small amount of medium, because the proportion of medium is greater than lubricant oil, now the two exchanges convection current, medium flow into lowest part, lubricant oil rises, to plunger, main filler, secondary filler lubricates, raise along with the capacity in swap tank 9 increases pressure, when swap tank 9 is greater than 1.25 times of middle oil pump 16 inlet pressure, one-way valve 10 is opened automatically, at the medium that the ratio of lower curtate is heavy, enter in feed liquor pipe network, swap tank 9 internal pressure is fallen to similar to plunger pump inlet pressure, such circulation is carried out, guarantee that plunger packing remains in lubricant oil to work, improve the life-span and lower friction power loss.
The the second oil storage region supplemented in tank unit is the repairing district of plunger pump, oil pressure in second oil storage region is completed by oil pump 16, when the second oil storage region oil pressure is greater than the pressure of swap tank 9 in handshaking system, oil pump quits work, operation of oil pump when oil pressure is less than swap tank 9 pressure in handshaking system, now lubricant oil is added in Fig. 1 to take over and enters in oil ring and swap tank 9, the working pressure of oil pump is 1.5 times of swap tank 9 pressure, when the pressure in the second oil storage region oil is greater than 1.5 times of swap tank 9 pressure, superpressure reflux valve 18 is opened automatically, liquid flows into the first reserve and carries out release.Second oil storage joint area presses the equal shunting one-way valve 18 of cylinder number, shunting one-way valve mainly stops the lubricant oil reflux in exchanger to enter in the second oil storage region, when lubricant oil is mended to oil ring in the second oil storage region, this one-way valve opens, lubricant oil enters the main stuffing box body of manifold to Fig. 1 by shunting one-way valve, joint enters oil ring 5 and branches in plunger packing and swap tank 9, reach the second oil storage region, stuffing box assembly and swap tank synchronous, guarantee after profit handshaking at work that plunger packing can run to improve the life-span in lubricant oil, realize repairing in low-pressure cavity, guarantee that stuffing box body works and do not ftracture under high pressure height alternating stress.
Handshaking plunger pump of the present invention, mainly solve when conveying high-pressure liquid (25-50MPa), medium is that oilfield sewage contains suspended matter and particle, by the relation adopting handshaking technology to utilize proportion between profit, design realizes the life-span > 3000 hours of plunger packing for lubricant oil stuffing box handshaking system.
Claims (10)
1. a reciprocating plunger pump, comprise stuffing box assembly, this stuffing box assembly comprises the stuffing box body with inner volume, it is characterized in that: below described stuffing box body, be provided with handshaking system, this handshaking system comprises the swap tank (9) that lubricant oil is filled in inside, this swap tank (9) is connected with the inner volume of stuffing box body, in addition, described swap tank (9) is communicated with the feed liquor pipe network of plunger pump by an one-way valve (10), and the working pressure of described one-way valve (10) should be greater than the inlet pressure of reciprocating plunger pump.
2. reciprocating plunger pump according to claim 1, is characterized in that: the working pressure of described one-way valve (10) is 1.25 times of the inlet pressure of reciprocating plunger pump.
3. reciprocating plunger pump according to claim 2, it is characterized in that: described swap tank (9) is connected with the inner volume of stuffing box body by a connecting tube, this connecting tube is provided with ball valve (15), swap tank (9) bottom is connected with a release blowdown valve (11).
4. reciprocating plunger pump according to claim 3, is characterized in that: described swap tank (9) top is connected with stop valve (14) and pressure gauge (13).
5. reciprocating plunger pump according to claim 1, is characterized in that: be provided with UNICOM's distributor (12) in described swap tank (9).
6. reciprocating plunger pump according to claim 1, it is characterized in that: stuffing box assembly comprises the main stuffing box body (1) with inner volume, main stuffing box body (1) inner chamber is equipped with plunger (1), main front guide ring (3) is provided with between plunger (1) and main stuffing box body (1) inner chamber, main filler (4), the whole body has oil ring (5) and the secondary stuffing box body (1-1) of oilhole, guide ring (3) before main, main filler (4), oil ring (5) and secondary stuffing box body (1-1) are all set in plunger (1) outward, main stuffing box body (1) inner chamber is provided with step, front end and this step of main front guide ring (3) offset, before main, the rear end of guide ring (3) and the front end of main filler (4) offset, the front end of the rear end oil ring (5) of main filler (4) offsets, the rear end of oil ring (5) and the front end of secondary stuffing box body (1-1) offset, the rear end of secondary stuffing box body (1-1) is connected with secondary filler clamping nut (8-1), secondary filler (6) and secondary pressure ring (7) is provided with between secondary stuffing box body (1-1) and plunger (1), secondary filler (6) and secondary pressure ring (7) are also set in plunger (1) outward, secondary stuffing box body (1-1) inner chamber is provided with slave station rank, front end and this slave station rank of secondary filler (6) offset, the secondary rear end of filler (6) and the front end of secondary pressure ring (7) offset, main stuffing box body (1) rear end is connected with main filler clamping nut (8), described main stuffing box body (1) inside has the duct be communicated with the oilhole of oil ring (5), and the outlet in this duct is communicated with swap tank (9) through described connecting tube.
7. reciprocating plunger pump according to claim 6, is characterized in that: described handshaking Operation system setting is below main stuffing box or be arranged in the fluid end pump housing, and every cylinder arranges a swap tank.
8. reciprocating plunger pump according to claim 6, it is characterized in that: described main stuffing box body (1) top is provided with supplementary tank unit, this supplementary tank unit comprises tank body (15), oil pump (16), shunting one-way valve (17) and oil-level gauge (19), oil pump (16) is arranged on the bottom of tank body (15), by motor direct connection, the entrance of shunting one-way valve (17) is communicated with tank body (15), the outlet of shunting one-way valve (17) is communicated with the oilhole of oil ring (5), oil-level gauge (19) is arranged on tank body (15) for measuring the oil level in tank body (15).
9. reciprocating plunger pump according to claim 8, it is characterized in that: described tank body (15) inside has two oil storage regions spaced apart from each other---the first oil storage region and the second oil storage region, the inhalator of described oil pump (16) and described oil-level gauge (19) are arranged in the first oil storage region, and the decline information that oil pump (16) measures oil level according to oil-level gauge (19) carries out repairing; The outlet of described oil pump (16) described oil pump (16) and the second oil storage regional connectivity thus oil pressure in the second oil storage region are completed by oil pump (16), the entrance of shunting one-way valve (17) and the second oil storage regional connectivity, be connected with superpressure reflux valve between the second oil storage region and the first oil storage region.
10. reciprocating plunger pump according to claim 8, is characterized in that: the working pressure of described oil pump (16) is 1.5 times of swap tank (9) pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240873.XU CN204692072U (en) | 2015-04-20 | 2015-04-20 | A kind of reciprocating plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240873.XU CN204692072U (en) | 2015-04-20 | 2015-04-20 | A kind of reciprocating plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692072U true CN204692072U (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520240873.XU Expired - Fee Related CN204692072U (en) | 2015-04-20 | 2015-04-20 | A kind of reciprocating plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692072U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791237A (en) * | 2015-04-20 | 2015-07-22 | 宁波合力机泵有限公司 | Reciprocating plunger pump |
| CN106593858A (en) * | 2017-01-24 | 2017-04-26 | 宁波合力机泵股份有限公司 | Plunger packing sealing and lubricating device of reciprocating pump |
-
2015
- 2015-04-20 CN CN201520240873.XU patent/CN204692072U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791237A (en) * | 2015-04-20 | 2015-07-22 | 宁波合力机泵有限公司 | Reciprocating plunger pump |
| CN106593858A (en) * | 2017-01-24 | 2017-04-26 | 宁波合力机泵股份有限公司 | Plunger packing sealing and lubricating device of reciprocating pump |
| CN106593858B (en) * | 2017-01-24 | 2019-08-13 | 宁波合力机泵股份有限公司 | A kind of reciprocating pump plunger packing sealing lubrication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315105, integrity investment Road, Yinzhou District investment center, Ningbo, Zhejiang, Yinzhou 888 Patentee after: Ningbo Heli pump Limited by Share Ltd Address before: 315105 Yinzhou investment and entrepreneurship center, Ningbo, road, No. 888 Patentee before: Heli Mechanical Pump Co., Ltd., Ningbo City |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 315105 Yinzhou District investment and entrepreneurship center, Ningbo, road, No. 888 Patentee after: Ningbo Heli pump Limited by Share Ltd Address before: 315105, integrity investment Road, Yinzhou District investment center, Ningbo, Zhejiang, Yinzhou 888 Patentee before: Ningbo Heli pump Limited by Share Ltd |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20180420 |