CN104535266B - Clamp for sub-cavity pressure-resistant test of multi-cavity pump body - Google Patents
Clamp for sub-cavity pressure-resistant test of multi-cavity pump body Download PDFInfo
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- CN104535266B CN104535266B CN201410810889.XA CN201410810889A CN104535266B CN 104535266 B CN104535266 B CN 104535266B CN 201410810889 A CN201410810889 A CN 201410810889A CN 104535266 B CN104535266 B CN 104535266B
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Abstract
The invention relates to a clamp for a sub-cavity pressure-resistant test of a multi-cavity pump body. The clamp comprises a first sub-cavity clamp plate, a second sub-cavity clamp plate and a fixing assembly used for clamping a first base plate and a second base plate. The first sub-cavity clamp plate and the second sub-cavity clamp plate can be connected through first matching columns and second matching columns in a straight port matching mode. After the first sub-cavity clamp plate and the second sub-cavity clamp plate are connected in the straight port matching mode, a balance cavity is formed by sealing and matching the first matching columns and the second matching columns in a defined mode. The clamp for the sub-cavity pressure-resistant test of the multi-cavity pump body can solve the problem that as the sub-cavity pressure-resistant test is difficult to perform on the multi-cavity pump body, and a whole pump must be designed according to a certain high pressure bearing cavity, the production cost of the pump is too high.
Description
Technical field
The present invention relates to water-aspirator pressure field tests, especially relate to a kind of Multicarity pump housing point chamber voltage withstanding test fixture.
Background technology
As a main pressure-containing member of water pump, its design has to meet certain intensity, rigidity and tight to the pump housing
Close property requires.The pump housing must observe it after the completion of design by voltage-withstand test obvious plastic deformation and rupture, to check
Its design strength, verifies whether it has the necessary bearing capacity of safe operation under design pressure.Pass through to observe different company simultaneously
There is No leakage socket part position, designs potential local defect with the tightness of test design or discovery.
The voltage-withstand test of the pump housing usually uses water as pressure medium, applies also will than its maximum working (operation) pressure (MWP) in the pump housing
High test pressure.According to related pump design, touchstone (as din en 12162-2010 liquid pump safety requirements hydrostatic
Pressure test program, iso 5199 centrifugal pump technical requirements-ii class standard, iso 9905 centrifugal pump technical requirements i class standard
Deng) it is known that the voltage-withstand test value of the pump housing can be carried out according to following principle:
For the single-chamber body pump housing, its voltage-withstand test pressure is necessary for 1.3～1.5 times of its maximum working pressure (MWP)；
For the Multicarity pump housing, the voltage-withstand test pressure of its each cavity should be not less than respective cavity maximum working pressure (MWP)
1.3～1.5 times it may be necessary to carry out a point chamber test to each cavity.
In actual mechanical process, for the single-chamber body pump housing, using blind plate, each outside opening need to be blocked i.e. for general
Voltage-withstand test can be carried out.And for the Multicarity pump housing, especially in the case that its operating pressure height, opening size are big, often exist
The opening sealing Dipeptiven of high-low pressure boundary is big, is difficult to find a rational point chamber fixture and high-low pressure cavity is carried out point
Cut.
Fig. 1 is a kind of pump housing 110 of double-suction multi-stage middle-opening pump and the structure of traditional point chamber voltage withstanding test fixture 120.Its
In, 111 is rotor seal cavity.Operationally, fluid media (medium) simultaneously enters the pump housing from the suction chamber 112 of both sides to this pump first
110, after first order blade wheel chamber 113 pressurization, enter through stator and after second level blade wheel chamber 114, continue pressurization, then pass through to lead
Leaf pumps out after directing fluid into third level blade wheel chamber 115 pressurization.The operating pressure of wherein suction chamber 112 is p1, first order leaf
The operating pressure of engineer room 113 is p2, and the pressure of second level blade wheel chamber 114 work is p3, the operating pressure of third level blade wheel chamber 115
For p4, and p1 < p2 < p3 < p4.Because p4 will be significantly larger than the pressure of other within the chambers, if therefore can be third level blade wheel chamber
115 separate to be designed with other cavitys, and will save a lot of materials if carrying out independent voltage-withstand test and produce into
This.
This point of chamber voltage withstanding test fixture 120 includes 122, two points of chamber folders of 121, two sealing rings of two seal cavity blind plates
Plate 123, clamping screw 124 and sealing nut 125.This point of chamber voltage withstanding test fixture 120, in test, is primarily present following asking
Topic: because a point chamber clamping plate 123 is fully exposed under pressure medium, a sensing low pressure therefore will be produced on point chamber clamping plate 123
Sealing (work) load in area, its size is π * (d/2)2* (p4-p3) * (1.3～1.5), d are that point sealing of chamber clamping plate 123 is straight
Footpath.When the difference of p4 and p3 is very big, or when sealed diameter d is very big, the service load on point chamber clamping plate 123 will be very
Greatly.So that a very thick clamping screw 124 provides sufficiently large pretightning force to offset its service load, otherwise divide chamber
Sealing ring 122 on clamping plate 123 would not be compacted, and sealing ring 122 can lose sealing effectiveness.But it is true that by general
Torque spanner also is difficult to obtain so big pretightning force, is therefore difficult to ensure that sealing surface can effectively compress.Sealing station one
Denier lost efficacy, and higher-pressure region and low-pressure area will produce very big leakage, and this time-division chamber voltage-withstand test will fail.
Because a clamping screw 124 is difficult to obtain sufficiently large prefastening load to offset the work load on point chamber clamping plate 123
Lotus, also has technical staff to attempt to connect the two pieces of points of chamber clamping plate 123 in left and right using many clamping screws 124.But often due to
Point chamber clamping plate 123 is wrapped up by other cavitys, is difficult to find out space and remains installing more clamping screws 124, its result
It is difficult to ensure that sealing station effectively works.
Therefore, for the Multicarity pump housing, due to the defect of existing point of chamber voltage withstanding test fixture 120 itself presence, Hen Duosheng
Produce producer and have to abandon a point chamber pressure measurement, and to the whole Multicarity pump housing according to its a certain maximum pressure pocket body running pressure
1.3～1.5 times of values are designed and test, and the wall thickness that its result may result in the little cavity of pressure-bearing on the pump housing also must carry out volume
Outer thickening, so that whole design weight increases, leads to the production costs such as foundry goods, processing, transport to steeply rise.Particularly right
In expensive pump housing material, the increase of weight often brings bigger cost pressure.
Content of the invention
Based on this it is necessary to provide a kind of Multicarity pump housing point chamber voltage-withstand test folder that can offset seal load as far as possible
Tool.
A kind of Multicarity pump housing divides chamber voltage withstanding test fixture, comprising:
First point of chamber clamping plate, including first substrate and the first cooperation post, described first cooperation post is to be located at described first base
The hollow cylinder structure of plate side；
Second point of chamber clamping plate, including second substrate and the second cooperation post, described second cooperation post is to be located at described second base
The hollow cylinder structure of plate side；And
Fixation kit, for clamping described first substrate with described second substrate；
Can be by described first cooperation post and described the between described first point of chamber clamping plate and described second point of chamber clamping plate
The two cooperation straight mouths of post are connected；Described first point of chamber clamping plate is after straight mouth is connected with described second point of chamber clamping plate by described the
One cooperation post surrounds a counter balance pocket with described second cooperation column sealing cooperation.
Wherein in an embodiment, described fixation kit includes clamping screw and nut；Described clamping screw with described
First substrate is fixedly connected；Described second substrate is provided with the fixing hole with the cooperation of described clamping screw；Described clamping screw passes through
Screwed by described nut after described fixing hole and described first point of chamber clamping plate is connected with described second point of chamber clamping plate clamping.
Wherein in an embodiment, the inwall of described first cooperation post one end away from described first substrate is Step-edge Junction
Structure；The outer wall of described second cooperation post one end away from described second substrate is ledge structure；Described second cooperation post can be inserted
Enter in described first cooperation post and straight mouth cooperation is formed by the ledge structure cooperating.
Wherein in an embodiment, the outer wall of described second cooperation post offers seal groove, and sets in this seal groove
There is sealing ring, the inwall of this sealing ring and described first cooperation post is passed through in described second cooperation post insertion described first after coordinating post
Seal against.
Wherein in an embodiment, described first substrate is provided with seal groove in the side being provided with described first cooperation post,
And it is provided with sealing ring in this seal groove for sealing against with the cavity wall of cavity to be tested；And/or described second substrate exists
Be provided with described second cooperation post side be provided with seal groove, and be provided with this seal groove sealing ring for cavity to be tested
Cavity wall seal against.
Wherein in an embodiment, the described Multicarity pump housing point chamber voltage withstanding test fixture also includes auxiliary sealing member, institute
State the insertion section that auxiliary sealing member includes fixed part and is located at described fixed part side；Described fixed part and described second substrate
Outside be fixedly connected by screw；Described fixed part and described insertion section are provided with the through hole running through；Described insertion section can be inserted
Enter described fixing in the hole；Described clamping screw passes through described nut after sequentially passing through described second substrate and described auxiliary sealing member
Screw in the side of described fixed part.
Wherein in an embodiment, described fixed part offers seal groove, and is provided with sealing ring in this seal groove, institute
State after screw screws, described fixed part is sealed against with described second substrate by this sealing ring；Described clamping screw is provided with
Seal groove, and it is provided with sealing ring in described seal groove, described clamping screw passes through this sealing ring and institute after passing through described through hole
The hole wall stating through hole seals against；
Wherein in an embodiment, the two ends of described fixing hole are heavy platform pore structure；Described clamping screw and described insert
Enter portion to abut with the step wall at the two ends of described fixing hole respectively.
Wherein in an embodiment, the described Multicarity pump housing point chamber voltage withstanding test fixture also includes to be tested for sealing
The suction chamber of the Multicarity pump housing seal cavity blind plate.
Wherein in an embodiment, the described Multicarity pump housing point chamber voltage withstanding test fixture also includes balancing pressure assembly,
Described balance pressure assembly includes two joints and is located at the balance manometer tube between two described joints；Described two joints
Insert respectively in described second substrate and described seal cavity blind plate, and connect with described counter balance pocket and ambient atmosphere respectively.
The above-mentioned Multicarity pump housing point chamber voltage withstanding test fixture (hereinafter referred to as voltage withstanding test fixture) can solve Multicarity
Due to being difficult to a point chamber voltage-withstand test, whole pump must be designed the pump housing according to the pressurized cavity of a certain highest, thus leading to produce
The too high problem of product production cost, has the advantage that
1) pressure self-balancing is adopted to design, the sealing reliability of voltage withstanding test fixture is high.Structure in voltage withstanding test fixture
Pass through during design higher-pressure region build a zero pressure cavity (counter balance pocket) method it is achieved that low-pressure area and higher-pressure region
Used load mutually balances, and this structure even, on the premise of not needing extra pretension fixation kit, can be achieved with main seal
Effective compression between face, such that it is able to guarantee the sealing property of sealing surface all the time.
2) this self-balancing type voltage withstanding test fixture structure is simple, easy to assembly.Because voltage withstanding test fixture need to be fully wrapped around
In the pump housing, it is tightly connected bolt if necessary to excessive or excessive, the difficulty installed certainly will be affected, but the present invention's is pressure
Test fixture structure adopts self-balancing type to design completely, therefore only needs a fixation kit to play auxiliary assembling and acts on.
3) using this pressure self-balancing formula point chamber fixture due to effectively pressure survey can be carried out by separated for different cavitys
Examination, thus solve the Multicarity pump housing of different pressures grade due to cannot normally point chamber test and it must be carried out with overall setting
Count into the problem of a pressure rating, each chamber of the Multicarity pump housing completely can according to the pressure rating of respective cavity respectively
Carry out wall thickness design, so just material and production cost can be saved from source, greatly improve the market competition of product
Power.
4) this voltage withstanding test fixture can be applied not only to the pressure pressure testing of the Multicarity pump housing, also can apply and other types
Multicarity pressure vessel voltage-withstand test.
Brief description
Fig. 1 is a kind of pump housing of double-suction multi-stage middle-opening pump and the structural representation of traditional point chamber voltage withstanding test fixture；
Fig. 2 is the structural representation of the voltage withstanding test fixture of an embodiment of the present invention；
Fig. 3 is to carry out voltage-withstand test using the voltage withstanding test fixture shown in Fig. 2 in the pump housing of a double suction multistage middle open pump
When scheme of installation；
Fig. 4 is the stress diagram of the voltage withstanding test fixture when Fig. 3 tests.
Specific embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can realize in many different forms however it is not limited to this paper institute
The embodiment of description.On the contrary, providing the purpose of these embodiments to be to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field belonging to the present invention
The implication that technical staff is generally understood that is identical.The term being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body is it is not intended that in limiting the present invention.Term as used herein "and/or" includes one or more phases
The arbitrary and all of combination of the Listed Items closing.
As shown in Fig. 2 the Multicarity pump housing point chamber voltage withstanding test fixture 20 of an embodiment includes first point of chamber clamping plate
210th, second point of chamber clamping plate 220, fixation kit 230, auxiliary sealing member 240, seal cavity blind plate 250, balance pressure assembly 260
And multiple sealing ring 270.
First point of chamber clamping plate 210 includes first substrate 211 and the first cooperation post 212.First cooperation post 212 is to be located at first
The hollow cylinder structure of substrate 211 side.First substrate 211 is provided with seal groove (in figure in the side being provided with the first cooperation post 212
Do not indicate), and it is provided with sealing ring 270 in this seal groove for sealing against with the cavity wall of cavity to be tested.In this enforcement
In mode, be formed in one between the first cooperation post 212 and first substrate 211 structure.First cooperation post 212 is away from the first base
The inwall of one end of plate 211 is ledge structure.Further, in the present embodiment, it is provided with multiple first in the first cooperation post 212
Reinforcement 213, to ensure the structural strength of the first cooperation post 212 of hollow-core construction.
Second point of chamber clamping plate 220 includes second substrate 221 and the second cooperation post 222.Second cooperation post 222 is to be located at second
The hollow cylinder structure of substrate 221 side.Second substrate 221 is provided with seal groove (in figure in the side being provided with the second cooperation post 222
Do not indicate), and it is provided with sealing ring 270 in this seal groove for sealing against with the cavity wall of cavity to be tested.In this enforcement
In mode, be formed in one between the second cooperation post 222 and second substrate 221 structure.Second cooperation post 222 is away from the second base
The outer wall of one end of plate 221 is ledge structure.Further, in the present embodiment, it is provided with multiple second in the second cooperation post 222
Reinforcement 223, to ensure the structural strength of the second cooperation post 222 of hollow-core construction.
The ledge structure of the second cooperation post 212 outer wall is adapted with the ledge structure of the first cooperation post 212 inwall, and second
Cooperation post 222 is inserted into the first cooperation post 212, thus by first point of chamber clamping plate 210 and the straight mouth of second point of chamber clamping plate 220
It is connected.After first point of chamber clamping plate 210 and the straight mouth of second point of chamber clamping plate 220 are connected with first post 212 and
Two cooperation post 222 sealing cooperations surround a counter balance pocket 202.This counter balance pocket 202 keeps and external atmosphere pressure balance.
The outer wall of the second cooperation post 222 is provided with seal groove (in figure does not indicate), and is provided with sealing ring in this seal groove
270.After in second cooperation post 222 insertion the first cooperation post 212, the interior of post 212 can be coordinated with first by this sealing ring 270
Wall seals against.Coordinate the sealing property between post 212 and the second cooperation post 222 for increase by first, in the present embodiment, the
Between one cooperation post 212 and the second cooperation post 222, multi-turn sealing ring 270 is set.
Fixation kit 230 is used for first substrate 211 is fixedly clamped with second substrate 221.In the present embodiment, fixing
Assembly 230 includes clamping screw 231 and nut 232.Clamping screw 231 is fixing with first substrate 211 and is tightly connected, the company of fixation
The mode connecing can be, but not limited to connect as being screwed or weld etc..Second substrate 221 is provided with and clamping screw 231 cooperation
Fixing hole (in figure does not indicate).Clamping screw 231 screwed first point of chamber clamping plate 210 by nut 232 after passing through fixing hole and
Second point of chamber clamping plate 220 is fixedly clamped and links together.
The insertion section 242 that auxiliary sealing member 240 includes fixed part 241 and is located at fixed part 241 side.Fixed part 241
It is fixedly connected by screw 243 with the outside of second substrate 221.Fixed part 241 and insertion section 242 are provided with the through hole (figure running through
In do not indicate).Insertion section 242 is inserted into the fixing in the hole of second substrate 221.Clamping screw 231 sequentially passes through the second base
Screwed in the side of fixed part 241 by nut 232 after plate 221 and auxiliary sealing member 240.
In the present embodiment, fixed part 241 offers seal groove (in figure does not indicate), and is provided with close in this seal groove
Seal 270.After screw 243 screws, fixed part 241 is sealed against with second substrate 221 by this sealing ring 270.Clamping screw
231 are provided with seal groove (in figure does not indicate), and are provided with sealing ring 270 in seal groove.Clamping screw 231 leads to after passing through through hole
Cross this sealing ring 270 to seal against with the hole wall of through hole.The clamping screw 243 of present embodiment is provided with multi-turn seal groove, phase
It is provided with multi-turn sealing ring 270 between the clamping screw 231 answered and the hole wall of through hole.
Further, in the present embodiment, the two ends of fixing hole are heavy platform pore structure.Clamping screw 231 and auxiliary seal
The insertion section 242 of part 240 is abutted with the step wall at the two ends of fixing hole respectively, to form non-rectilinear abutting, strengthens sealing effectiveness.
Seal cavity blind plate 250 is used for sealing the suction chamber of the Multicarity pump housing to be tested, can with the porch of suction chamber
It is tightly connected by screw etc..
Balance pressure assembly 260 includes two joints 261 and is located at the balance manometer tube 262 between two joints 261.
Two joints 261 insert in second substrate 221 and seal cavity blind plate 250 respectively, and respectively with counter balance pocket 202 and ambient atmosphere
Connection.Balance manometer tube 262 preferably employs metal hose, and it can ensure that counter balance pocket 202 is connected with ambient atmosphere, thus flat
Pressure in weighing apparatus chamber 202 may remain in an atmospheric pressure all the time, easy for installation to ensure.Meanwhile, when carrying out voltage-withstand test,
Flow into counter balance pocket 202 if there are a little liquid from cavity to be measured, by this balance manometer tube 262, liquid can also be discharged,
So that counter balance pocket 202 remains an atmospheric pressure.
This voltage withstanding test fixture 20 meets pump industry relevant design and testing standard, and structure stress is more reasonable, point chamber
Sealing effectiveness is relatively reliable.As shown in figure 3, carry out the reality of the voltage-withstand test of a Multicarity pump housing 30 with this voltage withstanding test fixture 20
Apply suddenly as follows:
First by first point of chamber clamping plate 210, second point of chamber clamping plate 220, fixation kit of voltage withstanding test fixture 20 during test
230 pines even, load lower pump body 310, then by auxiliary sealing member 240, joint 261, balance manometer tube 262 and second point of chamber clamping plate
220 closely assemble together, then cover upper pump casing 320, and be then tightened assembly 230, then tightens upper pump casing 320
With the bolt opening face in lower pump body 310, then the other end of balance manometer tube 262 is connected with a seal cavity blind plate 250
Good, finally two seal cavity blind plates 250 and upper pump casing 320 and lower pump body 310 are installed, you can carry out water filling, pressurization experiment.
When to rotor seal chamber 301, suction chamber 302, first order blade wheel chamber 303, second level blade wheel chamber 304 and third level leaf
After engineer room 305 water filling, rotor seal chamber 301, suction chamber 302, first order leaf can be slowly pressurized to by force (forcing) pump simultaneously to it
Engineer room 303 and 1.3～1.5 times of second level blade wheel chamber 304 maximum design pressure, then keep this pressure constant, then to the 3rd
Level blade wheel chamber 305 is slowly pressurized to 1.3～1.5 times of its design pressure.
The main operational principle of this voltage withstanding test fixture 20 is exactly by adjusting first point of chamber clamping plate 210 and second point of chamber folder
Acting surface product value in different counter balance pocket bodies for the plate 220, so that the used load value part in higher-pressure region and low area is cancelled out each other,
And then guarantee to can be achieved with the natural compression of sealing surface in the case of not needing excessive bolt load under pretension condition.
As shown in figure 4, pressure in counter balance pocket 202 is an atmospheric pressure, it is set to 0 it is assumed that rotor seal chamber 301, sucking
The test pressure of room 302, first order blade wheel chamber 303 and second level blade wheel chamber 304 is pt1, the test pressure of third level blade wheel chamber 305
Power is pt2 it is clear that first point of chamber clamping plate 210 is full symmetric with the stress on second point of chamber clamping plate 220, now with first point of chamber clamping plate
As a example 210, the hydraulic pressure used load that its structure is born is:
To first point of chamber clamping plate 210, used load to the right is low-pressure area: f1=π * (d/2)2*pt1；Higher-pressure region is to first
Point chamber clamping plate 210 used load to the left is: f2=π * [(d/2)2-(d1/2)2] * pt2, wherein, d is first point of chamber clamping plate 210
Diameter, d1 is diameter in counter balance pocket 202 for first point of chamber clamping plate 210.
For the specific Multicarity pump housing, the value of pt1 and pt2 is certain, therefore when designing pressure fixture, only need to use up
The value of amount increasing sealed diameter d1 just can be realized pressure loading f1 and f2 and mutually balance, or even makes f1 ＞ f2.Obviously, this design
Can be achieved with 210, first point of first point of chamber clamping plate without huge bolt pretightening mutual between chamber clamping plate 220 and the pump housing
Compression, thus substantially increase the sealed reliable performance of voltage withstanding test fixture 20.
During voltage-withstand test, after each chamber pressure all reaches test pressure value:
1) if each chamber pressure can remain to the time of correlation standard, and the pump housing no substantially leaks outside, flawless, invariably
Good plastic deformation is provable reliable design；
2) if each chamber pressure declines, and the pump housing has leakage or crackle to occur, then say that product is unqualified, the pump housing need to be entered
Row is repaired, and then again tests；
3) if in pressurize, each cavity no leaks outside, but has slow pressure drop, illustrates may to have between each cavity fraction of interior
Leakage, now only need to add an air relief valve between force (forcing) pump and cavity, and makes force (forcing) pump continuous firing can achieve that each cavity is protected
Pressure road time rating.
This voltage withstanding test fixture 20 can solve the Multicarity pump housing due to being difficult to a point chamber voltage-withstand test, and whole pump must be by
Being designed according to the pressurized cavity of a certain highest, thus leading to the problem of production high cost, having the advantage that
1) pressure self-balancing is adopted to design, the sealing reliability of voltage withstanding test fixture 20 is high.In voltage withstanding test fixture 20
Pass through during structure design higher-pressure region build a zero pressure cavity (counter balance pocket) method it is achieved that low-pressure area and high pressure
The used load in area mutually balances, and this structure, even on the premise of not needing extra pretension fixation kit 230, can be achieved with leading
Want the effective compression between sealing surface, such that it is able to guarantee the sealing property of sealing surface all the time.
2) this self-balancing type voltage withstanding test fixture 20 structure is simple, easy to assembly.Because voltage withstanding test fixture 20 needs completely
It is wrapped in the pump housing, is tightly connected bolt if necessary to excessive or excessive, certainly will affect the difficulty installed, but the present invention
Voltage withstanding test fixture 20 structure adopts self-balancing type to design completely, therefore only needs a fixation kit 230 to play auxiliary assembling effect
?.
3) using this pressure self-balancing formula voltage withstanding test fixture 20 due to can effectively carry out separated for different cavitys
Voltage-withstand test, thus solve the Multicarity pump housing of different pressures grade due to cannot normally point chamber test and it must be carried out
Global design becomes the problem of a pressure rating, and each chamber of the Multicarity pump housing completely can be according to pressure of respective cavity etc.
Level carries out wall thickness design respectively, so just can save material and production cost from source, greatly improve the city of product
Field competitiveness.
4) this voltage withstanding test fixture 20 can be applied not only to the pressure pressure testing of the Multicarity pump housing, also can apply and other classes
The voltage-withstand test of the Multicarity pressure vessel of type.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of Multicarity pump housing divides chamber voltage withstanding test fixture it is characterised in that including:
First point of chamber clamping plate, including first substrate and the first cooperation post, described first cooperation post is to be located at described first substrate one
The hollow cylinder structure of side；
Second point of chamber clamping plate, including second substrate and the second cooperation post, described second cooperation post is to be located at described second substrate one
The hollow cylinder structure of side；And
Fixation kit, for clamping described first substrate with described second substrate；
Can be joined with described second by described first cooperation post between described first point of chamber clamping plate and described second point of chamber clamping plate
The straight mouth of zygostyle is connected；Described first point of chamber clamping plate is joined by described first after straight mouth is connected with described second point of chamber clamping plate
Zygostyle surrounds a counter balance pocket with described second cooperation column sealing cooperation.
2. the Multicarity pump housing point chamber voltage withstanding test fixture as claimed in claim 1 is it is characterised in that described fixation kit includes
Clamping screw and nut；Described clamping screw is fixedly connected with described first substrate；Described second substrate is provided with and described clamping
The fixing hole of screw rod cooperation；Described clamping screw is screwed described first point of chamber folder by described nut after passing through described fixing hole
Plate is connected with described second point of chamber clamping plate clamping.
3. the Multicarity pump housing as claimed in claim 2 divides chamber voltage withstanding test fixture it is characterised in that described first cooperation post is remote
Inwall from one end of described first substrate is ledge structure；Described second cooperation post is outer away from one end of described second substrate
Wall is ledge structure；Described second cooperation post is inserted in described first cooperation post and the Step-edge Junction configuration by cooperating
Become straight mouth cooperation.
4. the Multicarity pump housing as claimed in claim 3 divides chamber voltage withstanding test fixture it is characterised in that described second coordinates post
Outer wall offers seal groove, and is provided with sealing ring in this seal groove, after described second cooperation post insertion described first coordinates post
Abutted with the inner wall sealing of the described first cooperation post by this sealing ring.
5. the Multicarity pump housing point chamber voltage withstanding test fixture as claimed in claim 4 is it is characterised in that described first substrate is setting
Have described first cooperation post side be provided with seal groove, and be provided with this seal groove sealing ring for cavity to be tested
Cavity wall seals against；And/or described second substrate is provided with seal groove in the side being provided with described second cooperation post, and in this sealing
It is provided with sealing ring for sealing against with the cavity wall of cavity to be tested in groove.
6. the Multicarity pump housing point chamber voltage withstanding test fixture as claimed in claim 5 is it is characterised in that also include auxiliary seal
Part, the insertion section that described auxiliary sealing member includes fixed part and is located at described fixed part side；Described fixed part and described the
The outside of two substrates is fixedly connected by screw；Described fixed part and described insertion section are provided with the through hole running through；Described insertion section
It is inserted into described fixing in the hole；Described clamping screw passes through institute after sequentially passing through described second substrate and described auxiliary sealing member
State nut to screw in the side of described fixed part.
7. the Multicarity pump housing point chamber voltage withstanding test fixture as claimed in claim 6 is it is characterised in that described fixed part offers
Seal groove, and be provided with sealing ring in this seal groove, after described screw screws, described fixed part passes through this sealing ring and described the
Two substrates seal against；Described clamping screw is provided with seal groove, and is provided with sealing ring in described seal groove, described clamping spiral shell
Bar is sealed against by the hole wall of this sealing ring and described through hole after passing through described through hole.
8. the Multicarity pump housing as claimed in claim 7 divides chamber voltage withstanding test fixture it is characterised in that the two ends of described fixing hole
For heavy platform pore structure；Described clamping screw and described insertion section are abutted with the step wall at the two ends of described fixing hole respectively.
9. the Multicarity pump housing point chamber voltage withstanding test fixture as claimed in claim 8 is it is characterised in that also include treating for sealing
The seal cavity blind plate of the suction chamber of the Multicarity pump housing of test.
10. the Multicarity pump housing point chamber voltage withstanding test fixture as claimed in claim 9 is it is characterised in that also include balancing pressure
Assembly, described balance pressure assembly includes two joints and is located at the balance manometer tube between two described joints；Described two
Individual joint inserts in described second substrate and described seal cavity blind plate respectively, and connects with described counter balance pocket and ambient atmosphere respectively
Logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410810889.XA CN104535266B (en) | 2014-12-23 | 2014-12-23 | Clamp for sub-cavity pressure-resistant test of multi-cavity pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410810889.XA CN104535266B (en) | 2014-12-23 | 2014-12-23 | Clamp for sub-cavity pressure-resistant test of multi-cavity pump body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104535266A CN104535266A (en) | 2015-04-22 |
| CN104535266B true CN104535266B (en) | 2017-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410810889.XA Active CN104535266B (en) | 2014-12-23 | 2014-12-23 | Clamp for sub-cavity pressure-resistant test of multi-cavity pump body |
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| CN (1) | CN104535266B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20015703U1 (en) * | 2000-09-11 | 2001-02-22 | Dungs Karl Gmbh & Co | Device for checking the tightness of valves in a gas section |
| CN1966995A (en) * | 2005-11-16 | 2007-05-23 | 株式会社日立工业设备技术 | Pressure test apparatus of double suction volute pump |
| CN102680186A (en) * | 2012-05-11 | 2012-09-19 | 昆山南方铸造有限公司 | Fixture for testing pressure of water pump of centrifugal machine |
| CN202676408U (en) * | 2012-07-18 | 2013-01-16 | 中国北车集团大同电力机车有限责任公司 | A clamp used for hydrostatic test of the pump housing of a lift pump |
| GB2493360A (en) * | 2011-08-02 | 2013-02-06 | Marcus Bicknell | Submersible pump with bulkhead between impeller and motor |
| CN204371707U (en) * | 2014-12-23 | 2015-06-03 | 安德里茨（中国）有限公司 | The Multicarity pump housing divides chamber voltage withstanding test fixture |
-
2014
- 2014-12-23 CN CN201410810889.XA patent/CN104535266B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20015703U1 (en) * | 2000-09-11 | 2001-02-22 | Dungs Karl Gmbh & Co | Device for checking the tightness of valves in a gas section |
| CN1966995A (en) * | 2005-11-16 | 2007-05-23 | 株式会社日立工业设备技术 | Pressure test apparatus of double suction volute pump |
| GB2493360A (en) * | 2011-08-02 | 2013-02-06 | Marcus Bicknell | Submersible pump with bulkhead between impeller and motor |
| CN102680186A (en) * | 2012-05-11 | 2012-09-19 | 昆山南方铸造有限公司 | Fixture for testing pressure of water pump of centrifugal machine |
| CN202676408U (en) * | 2012-07-18 | 2013-01-16 | 中国北车集团大同电力机车有限责任公司 | A clamp used for hydrostatic test of the pump housing of a lift pump |
| CN204371707U (en) * | 2014-12-23 | 2015-06-03 | 安德里茨（中国）有限公司 | The Multicarity pump housing divides chamber voltage withstanding test fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104535266A (en) | 2015-04-22 |
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