CN211852132U - High-pressure double-screw pump body pressing tool - Google Patents

High-pressure double-screw pump body pressing tool Download PDF

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Publication number
CN211852132U
CN211852132U CN202020345479.3U CN202020345479U CN211852132U CN 211852132 U CN211852132 U CN 211852132U CN 202020345479 U CN202020345479 U CN 202020345479U CN 211852132 U CN211852132 U CN 211852132U
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China
Prior art keywords
pump
pressure
ring
pressing tool
screw pump
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Active
Application number
CN202020345479.3U
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Chinese (zh)
Inventor
王旭
余义全
齐晓燕
米素英
栗斌
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Hebei Hengsheng Pumps Co ltd
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Hebei Hengsheng Pumps Co ltd
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Priority to CN202020345479.3U priority Critical patent/CN211852132U/en
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Abstract

The utility model provides a frock is suppressed to high-pressure double screw pump body. The high-pressure double-screw pump body pressing tool comprises two flange plates, a partition piece and a sealing assembly, wherein two ends of the partition piece are respectively abutted against the two flange plates, and the sealing assembly is sleeved on the partition piece; wherein, seal assembly is located the inboard of two support rings and with two support ring butts, keeps apart the cavity in the pump body for high pressure chamber and low pressure chamber. The utility model provides a pair of frock is suppressed to high pressure double screw pump body through separating the cavity in the pump body and carrying out static pressure test respectively, has reduced the gross energy of experimental consumption, through carrying out local pressurization to the low pressure region, the regional actual working ability of low pressure in the judgement pump body that can be more accurate.

Description

High-pressure double-screw pump body pressing tool
Technical Field
The utility model belongs to two screw pump performance test field, more specifically say, relate to a frock is suppressed to high-pressure two screw pump body.
Background
The twin-screw pump is a device for conveying media, the working pressure limit of the general twin-screw pump in the market is less than 5.0Mpa at present, and the performance requirement of the twin-screw pump required by the market is higher and higher along with the wider application range of the twin-screw pump.
Because the pump body of the twin-screw pump is used in the high-pressure working environment for a long time, if the bearing capacity can not reach the working pressure in the high-pressure environment, the pump body is damaged, and the work of the pump body is influenced, so that when the twin-screw pump is manufactured, in order to ensure the quality of the pump body, a static pressure test needs to be carried out on the twin-screw pump to detect the bearing capacity of the pump body.
Specifically, as shown in fig. 1, when a static pressure test is performed on the pump body 100, the first step is to remove the bearing seat 400 connected to the two sides of the pump body 100, take out the rotor 300 from the pump body 100, and remove the bushing 200 from the support ring 500 (the bushing 200 is in clearance fit with the support ring 500, and the support ring 500 is provided with an O-ring abutting against the bushing 200); the second step is to block both side openings of the pump body 100 by metal plates, respectively, and to apply pressure to the inside of the pump body 100 by a pressing tool. In addition, according to the relevant industrial standards, when a static pressure test for detecting the bearing capacity is carried out on the pump body, the applied pressure is not lower than 1.5 times of the rated working pressure, and the limit working pressure of the high-pressure double-screw pump in the existing product is 10Mpa, that is, each position in the pump body needs to bear the pressure of 15 Mpa.
And utility model people discover, according to the theory of operation of the pump body, also can know by this characteristic of low pressure region to high pressure region transmission after the medium gets into the pump body, the actual operating pressure of each part of the pump body is different, and the actual operating pressure of the pump body entrance of especially high pressure double screw pump often is no longer than 0.5Mpa, consequently only needs to exert the static pressure test that 0.75 Mpa's pressure can realize pump body entrance here. When the pressure of 15Mpa is applied to the inlet, the test energy consumption is improved, and if the pressure at the inlet leaks, because the pressure borne by the inlet of the pump body is far more than 1.5 times of the actual working pressure, the staff can only draw the conclusion that the inlet of the pump body cannot bear high pressure, but cannot draw the conclusion that the inlet of the pump body cannot bear the actual working pressure and the pump body is unqualified, so that the static pressure test result of the pump body is inaccurate.
In summary, when the pump static pressure test is performed by the prior art, the same amount of pressure is applied to the whole pump, it cannot be accurately determined whether the inlet of the pump can bear the actual working pressure, that is, the actual working capacity of the low-pressure area of the pump cannot be determined, and a large amount of energy created by the pressing tool is consumed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a frock is suppressed to high pressure double screw pump body aims at solving among the prior art and because each position bears pressure when carrying out the static pressure test to the pump body and equals, can't accurately judge whether up to standard problem of this pump body inside low pressure regional actual working ability.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a frock is suppressed to high pressure double screw pump body includes:
the two flange plates are respectively arranged on two sides of the pump body and used for plugging the openings on the two sides of the pump body;
the isolating piece is arranged in the pump body, and two ends of the isolating piece are respectively abutted against the two flange plates; and
the sealing assembly is fixedly sleeved on the peripheral wall of the isolating piece, is positioned on the inner sides of the two support rings arranged in the pump body and is used for being abutted against the two support rings;
the sealing assembly, the support ring, the inner wall of the pump body and the outer wall of the partition part enclose a high-pressure cavity for connecting with an outlet of the pump body; the sealing assembly, the support ring, the flange plate, the inner wall of the pump body and the outer wall of the partition part enclose a low-pressure cavity for being connected with an inlet of the pump body.
As another embodiment of the present application, the spacer has a hollow cylindrical structure with two open ends, and the open end of the spacer abuts against the flange plate.
As another embodiment of the application, the isolating piece is provided with a through hole used for being communicated with the low-pressure cavity.
As another embodiment of the present application, the seal assembly includes:
the first sealing ring is sleeved on the isolating piece, is positioned on the inner side of one of the support rings, and is used for abutting against the inner surface of the support ring, facing the pump body;
and the second sealing ring is sleeved on the isolating piece, is positioned at the inner side of the other supporting ring and is used for being abutted against the inner surface of the supporting ring, which faces the pump body.
As another embodiment of this application, first sealing ring with the second sealing ring all with the support ring clearance fit, first sealing ring with all be equipped with on the second sealing ring and be used for making the seal groove that the O-ring of support ring inserted.
As another embodiment of this application, the both ends of separator all can be dismantled and be connected with the hoist and mount subassembly that is used for being connected with the overhead traveling crane.
As another embodiment of the present application, the hoisting assembly comprises:
the two hoisting rings are detachably connected to the end face of one end of the isolating piece;
and two ends of the hoisting rope are respectively connected with the hoisting ring and are used for being connected with a lifting hook of the crown block.
As another embodiment of this application, be provided with a plurality of thread grooves along its circumference on the both ends face of separator, every integrative being connected with on the hoisting ring is used for threaded connection at the spliced pole in the thread groove.
The utility model provides a pair of frock is suppressed to high-pressure double-screw pump body's beneficial effect lies in:
the use steps are as follows:
firstly, fixedly mounting one flange plate at an opening at one side of a pump body; then, inserting the isolating piece into the pump body to enable the sealing assembly to be respectively connected with the two support rings, and enabling one end of the isolating piece to be tightly abutted against the plate surface of the flange plate; and finally, fixedly mounting the other flange plate at the opening at the other side of the pump body, so that the plate surface of the flange plate and the other end of the isolating piece are mutually abutted.
The utility model provides a frock is suppressed to high pressure double screw pump body, through setting up the flange plate in pump body both sides, thereby the opening of shutoff pump body both sides, make the inside of pump body reach encapsulated situation (when the inside of pump body reaches encapsulated situation, the other openings of pump body all seal through the blind plate/switch component that is connected with the opening, for example the drain passes through the valve shutoff that is connected with the drain, etc. belongs to prior art); link to each other with two support rings through seal assembly, make the chamber between pump body inner wall and the separator outer wall say and divide into the triplex, do in proper order along the axial of separator: the pump comprises a low-pressure cavity connected with the inlet of the pump body, a high-pressure cavity connected with the outlet of the pump body and another low-pressure cavity connected with the inlet of the pump body.
Compared with the prior art, the internal part of the pump body is divided into three different areas, and static pressure tests (low-pressure bearing tests on the low-pressure cavity and high-pressure bearing tests on the high-pressure cavity) with different pressures are carried out on the three areas, so that the overall energy consumption of the test can be reduced; in addition, the situation that the actual working capacity of the low-pressure area cannot be correctly judged by a tester due to the fact that the leakage occurs because the bearing pressure of the low-pressure area is larger than 1.5 times of the actual working pressure in the test is avoided, and the bearing capacity of the low-pressure area in the pump body can be judged more accurately.
Drawings
FIG. 1 is a front sectional view of a high pressure heavy duty twin screw pump of the prior art;
fig. 2 is a schematic view of a connection relationship between a high-pressure double-screw pump body pressing tool and a pump body provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a spacer according to an embodiment of the present invention;
fig. 4 is a schematic view of a connection relationship between the partition and the crown block according to the embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 taken along circle A;
fig. 6 is a schematic view of a connection relationship between a flange plate and a pump body according to an embodiment of the present invention.
In the figure, 1, a flange plate; 2. a spacer; 21. a through hole; 22. a thread groove; 31. a first seal ring; 32. a second seal ring; 33. a sealing groove; 41. hoisting a ring; 411. connecting columns; 42. hoisting a rope; 100. a pump body; 110. a high pressure chamber; 120. a low pressure chamber; 200. a bushing; 300. a rotor; 400. a bearing seat; 500. a support ring; 510. an O-ring.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 2 to fig. 6, a high-pressure twin-screw pump body pressing tool provided by the present invention will now be described. A frock is suppressed to high-pressure double-screw pump body, includes flange plate 1, separator 2 and seal assembly.
The two flange plates 1 are respectively used for being installed on two sides of the pump body 100 and sealing openings on two sides of the pump body 100; the openings on both sides of the pump body 100 refer to openings in the pump body 100 for connection to the bearing housing 400, and for convenience of description, the openings on both sides of the pump body 100 are simply referred to as side openings of the pump body 100 in the present embodiment.
The partition 2 is arranged in the pump body 100, and two ends of the partition are respectively abutted against the two flange plates 1; specifically, one of the flange plates 1 is installed in one of the side opening portions of the pump body 100, then the partition member 2 is inserted into the pump body 100 along the other side opening portion of the pump body 100, and the end portion of the partition member 2 abuts against the flange plate 1, then the other flange plate 1 is installed in the other side opening portion of the pump body 100, and the flange plate 1 abuts against the other end of the partition member 2, so that the effect that the two ends of the partition member 2 are respectively connected with the plate surfaces of the two flange plates 1 is achieved; the two flange plates 1, the inner wall of the pump body 100 and the outer wall of the partition 2 enclose an annular cavity, which is called a pump inner cavity for convenience of description.
The sealing assembly is arranged on the peripheral wall of the partition 2, is located on the inner side of the support rings 500, and is used for being connected with the two support rings 500 in the pump body 100, and the two support rings 500 and the sealing assembly divide the pump inner cavity into three parts, namely a low-pressure cavity 120 connected with the inlet of the pump body 100, a high-pressure cavity 110 connected with the outlet of the pump body 100, and another low-pressure cavity 120 connected with the inlet of the pump body 100 in sequence along the axial direction of the partition 2. Specifically, the seal assembly, the support ring 500, the inner wall of the pump body 100 and the outer wall of the partition 2 enclose a high pressure chamber 110 for connection with the outlet of the pump body 100; the sealing assembly, the support ring 500, the flange plate 1, the inner wall of the pump body 100 and the outer wall of the partition 2 enclose a low pressure chamber 120 for connecting with the inlet of the pump body 100, two parts of the low pressure chamber 120 are respectively positioned at two sides of the high pressure chamber 110, and the parts of the low pressure chamber 120 at the two sides are communicated with the part of the low pressure chamber 120 connected with the inlet of the pump body 100.
By adopting the technical scheme, when the static pressure test is carried out on the pump body 100, the pressure can be respectively applied to the high-pressure cavity 110 and the low-pressure cavity 120; specifically, the high-pressure chamber 110 is pressurized to 1.5 times the actual working pressure in the high-pressure region of the pump body 100, and the low-pressure chamber 100 is pressurized to 1.5 times the actual working pressure in the low-pressure region.
Compared with the prior art, the high-pressure double-screw pump body pressing tool provided by the utility model can separate a high-pressure area from a low-pressure area in the pump body 100, and respectively apply pressure when performing a static pressure test on the pump body 100, thereby reducing the pressure consumption when performing the static pressure test on the pump body 100 and reducing the energy loss on one hand; on the other hand, when having avoided carrying out the static pressure test through traditional mode to the pump body 100, even the low pressure region of the pump body 100 damages also can not accurately be used to this pump body 100 conclusion of actual work, the utility model provides a pair of frock is suppressed to high pressure double screw pump body is through keeping apart the low pressure region in the pump body 100, and the result reliability that obtains after making the static pressure test is higher, the regional bearing capacity of low pressure in the judgement pump body 100 that can be more accurate.
Please refer to fig. 2 and fig. 3 together, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, the spacer 2 is a tubular structure with a hollow interior and two open ends, wherein the two open ends of the spacer 2 are respectively abutted to the flange plates 1 on both sides.
Through adopting above-mentioned technical scheme, can reduce the weight of separator 2 for separator 2 is convenient for install more, and reduces the required material of preparation separator 2, is favorable to marketing and use.
Referring to fig. 2 and fig. 3 together, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, the spacer 2 is provided with a through hole 21 for communicating with the low-pressure cavity 120. Specifically, the through-hole 21 is opened on the area of the partition 2 located within the low-pressure chamber 120.
By adopting the technical scheme, when the static pressure test is carried out on the low pressure cavity 120, the pressure medium (generally liquid or gas) of the pressure loading device can be introduced into the partition part 2 through the through hole 21, so that all low pressure areas of the pump body 100 bear low pressure, the effect of completely simulating the actual working state of the pump body 100 is achieved, and the reliability of the result of the static pressure test carried out on the low pressure areas in the pump body 100 is improved.
Referring to fig. 2 to 4 together, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, the sealing assembly includes a first sealing ring 31 and a second sealing ring 32; the first sealing ring 31 and the second sealing ring 32 are fixedly sleeved on the spacer 2 and are positioned on the inner side of each support ring 500 in a one-to-one correspondence manner; the first sealing ring 31 is intended to be connected to one of the support rings 500 and the second sealing ring 32 is intended to be connected to the other support ring 500.
In preparing the seal assembly, the first seal ring 31 and the second seal ring 32 are sized according to the size of the two support rings 500 in the pump body 100. In the process of installing the spacer 2, if the two support rings 500 are different in size, the first seal ring 31 and the second seal ring 32 are also different in size; assuming that the second sealing ring 32 is smaller than the first sealing ring 31, when the spacer 2 is inserted, the end of the spacer 2 close to the second sealing ring 32 is generally inserted into the pump body 100, so as to avoid the first sealing ring 31 from being stuck on the smaller support ring 500, and thus the spacer 2 is more convenient to install.
By adopting the above technical solution, after the spacer 2 is inserted into the pump body 100, the first sealing ring 31 and the second sealing ring 32 are respectively connected with the two support rings 500, so as to separate the pump inner cavity into the high pressure cavity 110 and the low pressure cavity 120.
It should be noted that the above-mentioned size relationship between the first seal ring 31 and the second seal ring 32 means the height extending along the radial direction of the spacer 2.
Also, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. That is, the first seal ring 31 and the second seal ring 32 refer to two ring bodies respectively provided on the partition 2 at intervals along the axial direction of the partition 2.
Referring to fig. 2 to 4, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, the first sealing ring 31 and the second sealing ring 32 are both in clearance fit with the support ring 500, and the first sealing ring 31 and the second sealing ring 32 are both provided with a sealing groove 33 for inserting the O-ring 510 of the support ring 500.
Through adopting above-mentioned technical scheme, after connecting first sealing ring 31 and second sealing ring 32 with two support rings 500 respectively, O type ring 510 can insert in the seal groove 33, thereby strengthen the relation of connection of first sealing ring 31 and second sealing ring 32 and two support rings 500, make the leakproofness of high pressure chamber 110 and low pressure chamber 120 stronger, guarantee when testing high pressure chamber 110, pressure medium can not let in the low pressure chamber 120 along support ring 500 and first sealing ring 31/second sealing ring 32, play the guard action to the low pressure region in the pump body 100.
It should be added that, the O-ring 510 in the prior art is made of an elastic material, so that the O-ring 510 does not engage with the first sealing ring 31/the second sealing ring 32 due to the fact that the O-ring 510 extends too far along the radial direction of the support ring 500, so that the spacer 2 cannot be inserted into the pump body 100.
Please refer to fig. 4 and fig. 5 together, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, both ends of the spacer 2 can be detachably connected with the hoisting assembly for being connected with the crown block.
Through adopting above-mentioned technical scheme, when inserting isolator 2 to pump body 100, isolator 2 can be connected with the overhead traveling crane through hoisting assembly, avoids the human consumption to avoid offering the hole that the lifting hook that is used for the overhead traveling crane passed on isolator 2, guaranteed isolator 2's stability in use.
It should be noted that, when the partition 2 is installed, only one set of hoisting assemblies needs to be installed on the partition 2 and then inserted into one end of the pump body 100.
Referring to fig. 4 and 5, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, the hoisting assembly includes two hoisting rings 41 detachably connected to the end face of one end of the spacer 2 and a hoisting rope 42 with two ends respectively connected to the hoisting rings 41; when the two ends of the hoisting rope 42 are connected with the two hoisting rings 41 respectively, the hook body of the crown block can be inserted into the space formed by the hoisting rings 41, the hoisting rope 42 and the cross section of the isolation piece 2, so that the isolation piece 2 is driven to move.
By adopting the technical scheme, the hoisting ring 41 is arranged on the end face of the partition 2, so that the situation that the hoisting ring 41 is clamped with the side opening of the pump body 100 or the support ring 500 is avoided; the hoisting rope 42 is connected with the hook body of the crown block, and the two ends of the hoisting rope 42 are respectively fixed on the two sides of one end surface of the isolating piece 2, so that the isolating piece 2 can move more stably.
Please refer to fig. 4 to fig. 6 together, as a specific embodiment of the high-pressure twin-screw pump body pressing tool provided by the present invention, a plurality of thread grooves 22 are arranged on the two end faces of the spacer 2 along the circumferential direction thereof, and each hoisting ring 41 is integrally connected with a connecting column 411 for screwing in the thread groove 22.
By adopting the above technical scheme, the end faces of the hoisting ring 41, the hoisting rope 42 and the spacer 2 form a space for inserting the hook body of the crown block, and the orientation of the space can be changed by inserting the two connecting columns 411 into different thread grooves 22; in actual operation, by changing the orientation of the space, the situation that after the hoisting assembly is connected with the hook body of the overhead crane and the partition 2 is hoisted can be avoided, the partition 2 rotates along the axial direction of the partition 2, and the waiting time after the partition 2 is hoisted (the waiting time refers to the time period from the axial rotation of the partition 2 to the standstill) is avoided, so that the partition 2 is more convenient to install. And, the two screw grooves 22 connected to the two connection columns 411 are centrosymmetric with the end surface of the partition 2; thus, when the overhead traveling crane lifts the separator 2, the occurrence of the situation in which the entire separator 2 is tilted is avoided.
What need supplement the explanation, through the utility model provides a pair of step when frock is suppressed to high pressure double screw pump body carries out static test to pump body 100 as follows:
A. removing the bearing seat 400 of the pump body 100, taking the rotor 300 out of the pump body 100, and removing the bushing 200 from the support ring 500;
B. the high-pressure double-screw pump body pressing tool is installed on a pump body 100, and a high-pressure cavity 110 and a low-pressure cavity 120 are formed in the pump body 100;
C. the pressure delivery end of the low pressure loading device is connected into the low pressure cavity 120 and pressure is applied;
D. closing the low-pressure loading device, and observing whether the pump body 100 leaks;
E. connecting the pressure delivery end of the high-pressure loading device into the high-pressure cavity 110 and applying pressure;
F. the high pressure loading device is turned off and the pump body 100 is observed for leaks.
The manner of removing bearing housing 400, rotor 300 and bushing 200 in step a is the prior art, and is not described herein again.
In the step B, the specific installation steps of installing the high-pressure double-screw pump body pressing tool on the pump body 100 are as follows:
B1. one of the flange plates 1 is mounted on one of the side opening portions of the pump body 100;
B2. the pump body 100 is transversely placed, so that the side part of the pump body 100, provided with the flange plate 1, is positioned at the lower part, and the other side opening faces upwards;
B3. connecting the isolation piece 2 with a crown block, and driving the isolation piece 2 to be inserted into the pump body 100 through the crown block, so that one end of the isolation piece 2 is connected with the flange plate 1, and the sealing components are respectively connected with the two support rings 500;
B4. the other flange plate 1 is attached to the side opening portion of the pump body 100 facing upward.
Wherein, if the sizes of the two support rings 500 are different; in step B1, the flange plate 1 is mounted on the side opening of the pump body 100 close to the smaller support ring 500; in step B3, when the overhead traveling crane lifts the spacer 2, if the first seal ring 31 is larger than the second seal ring 32, the first seal ring 31 should be positioned above the second seal ring 32; if the first seal ring 31 is smaller than the second seal ring 32, the first seal ring 31 should be positioned below the second seal ring 32.
The low pressure loading device/high pressure loading device for applying pressure in step C and step E may be selected according to the pressure value required by the static pressure test, and the connection position with the high pressure chamber 110 or the low pressure chamber 120 may be an opening of the pump body 100, such as: a drain connected to the high pressure chamber 110, or a drain of the pump body 100 connected to the low pressure chamber 120.
The time interval between step D and step F and step C and step E, respectively, should be greater than 30 minutes to make the static pressure test results of the high pressure chamber 110 and the low pressure chamber 120 more accurate.
In the steps D and F, the worker mainly observes whether the welding seam of the pump body 100 leaks or not and whether the pressure value in the pump body 100 changes or not; after step F, the operator determines whether the pump body 100 can be used in actual work according to the results obtained in step D and step F; specifically, if the welding seam of the pump body 100 leaks, and the pressure value in the pump body 100 changes greatly, the pump body 100 is not qualified; on the contrary, if the welding seam of the pump body 100 is always kept in a sealed state and the pressure in the pump body is kept unchanged, the pump body 100 meets the relevant regulations in the field and can be applied to the actual high-pressure working environment.
Also, since the low pressure region and the high pressure region inside the pump body 100 are respectively subjected to the static pressure test without interfering with each other, steps C and D can be interchanged with steps E and F in order, that is, steps E and F can be performed before steps C and D.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a frock is suppressed to high pressure double screw pump body which characterized in that includes:
the two flange plates are respectively arranged on two sides of the pump body and used for plugging the openings on the two sides of the pump body;
the isolating piece is arranged in the pump body, and two ends of the isolating piece are respectively abutted against the two flange plates; and
the sealing assembly is fixedly sleeved on the peripheral wall of the isolating piece, is positioned on the inner sides of the two support rings arranged in the pump body and is used for being abutted against the two support rings;
the sealing assembly, the support ring, the inner wall of the pump body and the outer wall of the partition part enclose a high-pressure cavity for connecting with an outlet of the pump body; the sealing assembly, the support ring, the flange plate, the inner wall of the pump body and the outer wall of the partition part enclose a low-pressure cavity for being connected with an inlet of the pump body.
2. The high-pressure double-screw pump body pressing tool according to claim 1, wherein the partition is a cylindrical structure which is hollow inside and is open at two ends, and the open end of the partition abuts against the flange plate.
3. The high-pressure twin-screw pump body pressing tool according to claim 2, wherein the partition is provided with a through hole for communicating with the low-pressure chamber.
4. The high-pressure twin-screw pump body pressing tool according to claim 1, wherein the sealing assembly comprises:
the first sealing ring is sleeved on the isolating piece, is positioned on the inner side of one of the support rings, and is used for abutting against the inner surface of the support ring, facing the pump body;
and the second sealing ring is sleeved on the isolating piece, is positioned at the inner side of the other supporting ring and is used for being abutted against the inner surface of the supporting ring, which faces the pump body.
5. The high-pressure double-screw pump body pressing tool according to claim 4, wherein the first sealing ring and the second sealing ring are in clearance fit with the support ring, and sealing grooves for inserting O-rings of the support ring are formed in the first sealing ring and the second sealing ring.
6. The high-pressure double-screw pump body pressing tool is characterized in that hoisting assemblies for connecting with a crown block are detachably connected to both ends of the isolating piece.
7. The high-pressure double-screw pump body pressing tool according to claim 6, wherein the hoisting assembly comprises:
the two hoisting rings are detachably connected to the end face of one end of the isolating piece;
and two ends of the hoisting rope are respectively connected with the hoisting ring and are used for being connected with a lifting hook of the crown block.
8. The high-pressure double-screw pump body pressing tool according to claim 7, wherein a plurality of thread grooves are formed in the two end faces of the isolating piece along the circumferential direction of the isolating piece, and a connecting column for being in threaded connection with the thread grooves is integrally connected to each hoisting ring.
CN202020345479.3U 2020-03-18 2020-03-18 High-pressure double-screw pump body pressing tool Active CN211852132U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020345479.3U CN211852132U (en) 2020-03-18 2020-03-18 High-pressure double-screw pump body pressing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020345479.3U CN211852132U (en) 2020-03-18 2020-03-18 High-pressure double-screw pump body pressing tool

Publications (1)

Publication Number Publication Date
CN211852132U true CN211852132U (en) 2020-11-03

Family

ID=73133911

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020345479.3U Active CN211852132U (en) 2020-03-18 2020-03-18 High-pressure double-screw pump body pressing tool

Country Status (1)

Country Link
CN (1) CN211852132U (en)

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