CN201696698U - Pressure maintaining valve - Google Patents
Pressure maintaining valve Download PDFInfo
- Publication number
- CN201696698U CN201696698U CN2010202271518U CN201020227151U CN201696698U CN 201696698 U CN201696698 U CN 201696698U CN 2010202271518 U CN2010202271518 U CN 2010202271518U CN 201020227151 U CN201020227151 U CN 201020227151U CN 201696698 U CN201696698 U CN 201696698U
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- CN
- China
- Prior art keywords
- valve
- pressure
- pressure regulating
- regulating cavity
- regulation
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- Expired - Fee Related
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Abstract
The utility model discloses a pressure maintaining valve which comprises a valve body, a valve disk, a valve disk seal cover, a pressure regulating chamber base assembly, a piston, the upper cover of a pressure regulating chamber, a diaphragm, a valve rod and a pressure regulating medium delivery pipe, wherein the pressure regulating chamber base assembly comprises an upper valve cover and a connection part, the upper valve cover covers on the upper craft port of the valve body by the fastener, and the connection part is connected with the valve cover and the pressure regulating chamber base and has opening structure; the middle of the connection part is provided with a governing screw installation platform; and the valve rod passes through the upper valve cover and the connection part. The pressure maintaining valve also comprises a governing screw, a spring pad and a regulating spring, wherein the governing screw is screwed on the governing screw installation platform and is sheathed on the valve rod; the spring pad is sheathed on the valve rod and contacts with the top of the governing screw; the regulating spring is sheathed on the valve rod, the upper end supports the piston, and the lower end supports the spring pad. The utility model has the beneficial effects that the utility model has good pressure maintaining effect and is suitable for ship liquid pipe equipment.
Description
Technical field
The utility model relates to a kind of pressure maintaining valve, relate in particular to a kind of be used in the medium transport processes such as boats and ships oil, fresh water, seawater pressure maintaining valve, belong to valve field.
Background technique
Some media on the boats and ships, in liquid medium course of conveying such as oil, fresh water, seawater, pipe-line equipment all has certain requirement to transportation work pressure, when pressure medium excessive, cause conveyance conduit to break easily, and pressure medium can cause difficulty of transportation when too small.Therefore must in conveyance conduit, set up the discharge pressure that pressure maintaining valve comes control media.
One of them is exactly the self-powering type pressure maintaining valve for the pressure maintaining valve of often using at present, and it utilizes the pressure of medium itself to carry out pressure regulation in conjunction with pressure adjusting spring.This class self-powering type pressure regulator valve is just like Chinese patent notification number CN2192781 disclosed " self-contained pressure regulator ", though this self-contained pressure regulator has the good advantage of stabilizing voltage characteristic, the elastic force of its spring can't be regulated, and the time one is long, pressure changes easily, instability.Ride the sea year in year out by boats and ships, so this class self-contained pressure regulator not too is fit to the boats and ships use.And existing spring changes very inconvenience, need take valve body apart and change.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of employed pressure maintaining valve in the boats and ships fluid pipeline conveying equipment that is applicable at the problems referred to above, the elastic force of the spring of this pressure maintaining valve can be regulated, therefore voltage regulation result is good, and the discharge pressure fluctuation can not take place.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of pressure maintaining valve comprises:
One valve body, this valve body have the influent stream passage and go out circulation road and link up influent stream passage and the valve port that goes out circulation road; On this valve body, also be provided with the pressure regulation media outlet that is communicated with the influent stream passage;
One is installed in the valve disc on the valve port, has on the described valve disc and links up the influent stream passage and go out the flow channels of circulation road;
One valve disc capping in order to flow channels on the described valve disc of shutoff;
Install on the described valve body and the pressure regulating cavity base assembly that extends out to described valve body top, this pressure regulating cavity base assembly has a pressure regulating cavity base;
Be slidingly mounted on the piston on the described pressure regulating cavity base;
One employing fastening piece is installed in the pressure regulating cavity loam cake on the described pressure regulating cavity base, and described pressure regulating cavity loam cake is provided with the pressure regulation medium inlet;
One is installed in diaphragm between described pressure regulating cavity base and the pressure regulating cavity loam cake by the pressure regulating cavity loam cake, described diaphragm is divided into pressure regulation epicoele and pressure regulation cavity of resorption with the pressure regulating cavity between pressure regulating cavity loam cake and the pressure regulating cavity base, and described pressure regulation medium inlet is communicated with described pressure regulation epicoele;
One lower end is connected with described valve disc capping, and the upper end is passed the valve rod of described valve body, piston, diaphragm successively, and the termination of passing diaphragm at described valve rod is fixed with a diaphragm pressing plate;
One connects the pressure regulation medium transport pipe of described pressure regulation media outlet and pressure regulation medium inlet;
It is characterized in that, described pressure regulating cavity base assembly also comprises one by fastener cover bonnet on the technology mouth and connect described valve gap and the attachment portion of pressure regulating cavity base on the described valve body, wherein said attachment portion is a unenclosed construction, and an adjusting screw mountion plate is set at the middle part of described attachment portion; Described valve rod passes described bonnet and attachment portion;
Described pressure maintaining valve also comprises:
One is spun on the described adjusting screw mountion plate and is enclosed within adjusting screw on the described valve rod;
One is enclosed within on the described valve rod and the spring pad that contacts with described adjusting screw top;
On the described valve rod of one cover and upper end props up described piston, and the lower end props up the Regulation spring of described spring pad.
The utility model is provided with the filler seat between described valve rod and bonnet, described filler seat is installed in the described bonnet by a gland nut that is spun on the bonnet, is filled with the filler that seals on described filler seat.
For when valve overhauls, close the adjusting medium, the utility model is connected in series a control valve on described pressure regulation medium transport pipe.
Range of regulation of the present utility model is between 0.2-1.0MPa.
When the utility model was crossed valve body in the no liquid MEDIA FLOW, Regulation spring was with piston jack-up, and it is up to promote diaphragm, and diaphragm is up by pressing diaphragm strip ovable valve stem, and valve rod drives the valve disc capping flow channels on the valve disc is closed, and this moment, pressure maintaining valve cut out.When carrying liquid medium, liquid medium enters in the influent stream passage of valve body, part liquid medium constitutes the pressure regulation medium, by the pressure regulation media outlet on the valve body, the pressure regulation medium inlet that covers on pressure regulation medium transport pipe and the pressure regulating cavity flow in the pressure regulation epicoele, flow into the interior pressure regulation medium of pressure regulation epicoele with the diaphragm pressing plate, diaphragm, piston overcomes the resistance of Regulation spring to pressing down, the drive valve rod is descending, medium pressure liquid in entering valve body influent stream passage reaches 105%Pm, and (Pm is predefined force value, when the medium pressure liquid of influent stream passage feeding equals Pm, the valve disc capping is that the flow channels on the valve disc is closed) time, the flow channels on the valve disc is opened in the valve disc capping, and this moment, pressure maintaining valve was an opening state.When entering medium pressure liquid in entering valve body influent stream passage and drop to 95%Pm, medium pressure liquid will be less than the elastic force of diaphragm and Regulation spring, Regulation spring promotes piston stroking upward, piston promotes diaphragm again and the diaphragm pressing plate is up, thereby it is up to drive valve rod, and it is that the flow channels on the valve disc is closed that up valve rod drives the valve disc capping.
Because the utility model will be provided with outside the valve body in order to the adjusting screw of the pre-elastic force value of regulating Regulation spring, thereby can regulate the elastic force of Regulation spring easily, makes that the precision of voltage regulation of the present utility model is higher, can not have influence on voltage stabilizing because Regulation spring is tired.Moreover the utility model is arranged on Regulation spring outside the valve body, changes to get up need not take valve body apart, therefore changes very convenient.The utility model is provided with control valve on pressure regulation medium transport pipe, made things convenient for the maintenance of valve.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a left view of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1 and 2, described pressure maintaining valve comprises a valve body 100, be provided with influent stream passage 110 in the valve body 100 and go out circulation road 120 and in order to link up influent stream passage 110 and the valve port 130 that goes out circulation road 120, a valve disc 140 is installed on valve port 130, valve disc 140 is provided with flow channels 141.The casting of considering valve body 100 is convenient, and valve body 100 is provided with upper and lower technology mouth 150,160, by fastening piece lower cover 170 is being installed on the auxiliary hole 160 down.On the valve body of influent stream passage 110, also be provided with a pressure regulation media outlet 180 in addition.
By fastening piece bonnet 190 is installed on last technology mouth 150, bonnet 190 is connected as a single entity by attachment portion 300 with pressure regulating cavity base 210, and wherein attachment portion 300 is two struts 310, and attachment portion 300 has just become unenclosed construction like this.Attachment portion 300 also comprises and is connected two adjusting screw mountion plates 320 between pole 310 middle parts, offers a tapped hole on adjusting screw mountion plate 320, in order to adjusting screw described later to be installed.
On pressure regulating cavity base 210, be slidingly fitted with a piston 220, pressure regulating cavity loam cake 230 is installed on the pressure regulating cavity base 220 by fastening piece, and diaphragm 240 is pressed between pressure regulating cavity base 210 and the pressure regulating cavity loam cake 230, diaphragm 240 is divided into pressure regulation epicoele 250 and pressure regulation cavity of resorption 260 with the pressure regulating cavity between pressure regulating cavity loam cake 230 and the pressure regulating cavity base 210, and pressure regulating cavity loam cake 230 is provided with pressure regulation medium inlet 231
Be provided with filler seat 430 between valve rod 400 and bonnet 190, filler seat 430 is installed in the bonnet 190 by a gland nut 440 that is spun on the bonnet 190, is filled with the filler 431 that seals on filler seat 430.
Whole pressure maintaining valve comprises that also one is enclosed within on the valve rod 400 and is spun on the adjusting screw 510 in adjusting screw mountion plate 320 upper screwed holes and is enclosed within spring pad 520, Regulation spring 530 on the valve rod 400, the bottom of spring pad 520 contacts with the top of adjusting screw 510, Regulation spring 530 upper ends prop up piston 220, and the lower end props up spring pad 520.By adjusting screw 510, spring pad 520 is the pre-elastic force of can regulate Regulation spring 530.
Between pressure regulation media outlet 180 and pressure regulation medium inlet 231, be connected with a pressure regulation medium transport pipe 600, serial connection one control valve 610 on the pressure regulation medium transport pipe 600, control valve 610 is a stop valve.Opening controlling valve 610 can carry out pressure regulation and voltage stabilizing with regulating medium transport in pressure regulation epicoele 250.
The range of regulation of the pressure maintaining valve of present embodiment is between 0.2-1.0MPa.The Applicable media of this pressure maintaining valve: oil, fresh water, seawater.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. pressure maintaining valve comprises:
One valve body, this valve body have the influent stream passage and go out circulation road and link up influent stream passage and the valve port that goes out circulation road; On this valve body, also be provided with the pressure regulation media outlet that is communicated with the influent stream passage;
One is installed in the valve disc on the valve port, has the flow channels of linking up the influent stream passage and going out circulation road on the described valve disc;
One valve disc capping in order to flow channels on the described valve disc of shutoff;
Install on the described valve body and the pressure regulating cavity base assembly that extends out to described valve body top, this pressure regulating cavity base assembly has a pressure regulating cavity base;
Be slidingly mounted on the piston on the described pressure regulating cavity base;
One employing fastening piece is installed in the pressure regulating cavity loam cake on the described pressure regulating cavity base, and described pressure regulating cavity loam cake is provided with the pressure regulation medium inlet;
One is installed in diaphragm between described pressure regulating cavity base and the pressure regulating cavity loam cake by the pressure regulating cavity loam cake, described diaphragm is divided into pressure regulation epicoele and pressure regulation cavity of resorption with the pressure regulating cavity between pressure regulating cavity loam cake and the pressure regulating cavity base, and described pressure regulation medium inlet is communicated with described pressure regulation epicoele;
One lower end is connected with described valve disc capping, and the upper end is passed the valve rod of described valve body, piston, diaphragm successively, and the termination of passing diaphragm at described valve rod is fixed with a diaphragm pressing plate;
One connects the pressure regulation medium transport pipe of described pressure regulation media outlet and pressure regulation medium inlet;
It is characterized in that, described pressure regulating cavity base assembly also comprises one by fastener cover bonnet on the technology mouth and connect described valve gap and the attachment portion of pressure regulating cavity base on the described valve body, wherein said attachment portion is a unenclosed construction, and an adjusting screw mountion plate is set at the middle part of described attachment portion; Described valve rod passes described bonnet and attachment portion;
Described pressure maintaining valve also comprises:
One is spun on the described adjusting screw mountion plate and is enclosed within adjusting screw on the described valve rod;
One is enclosed within on the described valve rod and the spring pad that contacts with described adjusting screw top;
On the described valve rod of one cover and upper end props up described piston, and the lower end props up the Regulation spring of described spring pad.
2. pressure maintaining valve as claimed in claim 1, it is characterized in that, be provided with the filler seat between described valve rod and valve gap, described filler seat is installed in the described valve gap by a gland nut that is spun on the valve gap, is filled with the filler that seals on described filler seat.
3. pressure maintaining valve as claimed in claim 1 is characterized in that, serial connection one control valve on described pressure regulation medium transport pipe.
4. pressure maintaining valve as claimed in claim 1 is characterized in that range of regulation is between 0.2-1.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202271518U CN201696698U (en) | 2010-06-13 | 2010-06-13 | Pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202271518U CN201696698U (en) | 2010-06-13 | 2010-06-13 | Pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696698U true CN201696698U (en) | 2011-01-05 |
Family
ID=43397940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202271518U Expired - Fee Related CN201696698U (en) | 2010-06-13 | 2010-06-13 | Pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865315A (en) * | 2010-06-13 | 2010-10-20 | 上海井和海船用阀门有限公司 | Pressure maintaining valve |
-
2010
- 2010-06-13 CN CN2010202271518U patent/CN201696698U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865315A (en) * | 2010-06-13 | 2010-10-20 | 上海井和海船用阀门有限公司 | Pressure maintaining valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |