CN204595630U - Pressure control device - Google Patents
Pressure control device Download PDFInfo
- Publication number
- CN204595630U CN204595630U CN201520285943.3U CN201520285943U CN204595630U CN 204595630 U CN204595630 U CN 204595630U CN 201520285943 U CN201520285943 U CN 201520285943U CN 204595630 U CN204595630 U CN 204595630U
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- CN
- China
- Prior art keywords
- valve
- steel pipe
- orifice plate
- self
- differential pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of pressure control device, comprise source of the gas and secondary seal supply air line, self-operated differential pressure regulator and orifice plate, also comprise T-valve, described self-operated differential pressure regulator import is connected with source of the gas by steel pipe, described self-operated differential pressure regulator outlet is connected with orifice plate by steel pipe, described orifice plate is connected with the import of T-valve by steel pipe, an outlet of described T-valve is connected with secondary seal supply air line by steel pipe, and another outlet of described T-valve is connected with the film head of Self-operated differential pressure regulaitng valve by steel pipe.The beneficial effects of the utility model are that the pressure regulation of specific pressure variable valve is stablized, saving gas.
Description
Technical field
The utility model relates to Stress control field, particularly a kind of pressure control device.
Background technology
The secondary seal supply gas pressure of conventional dry hermetic seal controls with pressure-regulating valve.Constant pressure after this governor valve control valve, can provide stable blanket gas pressure and stable blanket gas flow to secondary seal.But when secondary seal pressure surge, this variable valve still maintains the pressure stability after valve, if when pressure surge exceedes the set pressure of variable valve, cause secondary seal for unsaturated vapor, side of body sealingly secure is become to run; When pressure surge is less than variable valve set pressure, cause secondary seal air demand excessive, the compressed nitrogen that waste is valuable.
Utility model content
The purpose of this utility model is to solve the problem, and devises a kind of pressure control device.
Realizing above-mentioned purpose the technical solution of the utility model is, a kind of pressure control device, comprise source of the gas 1 and secondary seal supply air line 2, also comprise self-operated differential pressure regulator 3 and orifice plate 4, and T-valve 5, described self-operated differential pressure regulator import is connected with source of the gas by steel pipe, described self-operated differential pressure regulator outlet is connected with orifice plate by steel pipe, described orifice plate is connected with the import of T-valve by steel pipe, an outlet of described T-valve is connected with secondary seal supply air line by steel pipe, another outlet of described T-valve is connected with the film head 6 of Self-operated differential pressure regulaitng valve by steel pipe.
The aperture of described orifice plate 4 is 2-8mm.
The diameter of described steel pipe is 10-50mm.
The latus rectum of described self-operated differential pressure regulator is 10-50mm.
Utilize the pressure control device that the technical solution of the utility model makes, the difference of the pressure of the pressure before orifice plate and secondary seal gas is constant, namely the pressure reduction of orifice plate upstream and downstream is constant, flow through the constant flow of orifice plate, keep secondary seal to obtain constant flow when pressure surge, ensure that the safe operation of secondary seal, avoid wasting compressed nitrogen simultaneously
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure control device described in the utility model;
In figure, 1, source of the gas; 2, secondary seal supply air line; 3, self-operated differential pressure regulator; 4, orifice plate; 5, T-valve; 6, film head.
Embodiment
Below in conjunction with accompanying drawing, the utility model is specifically described, as the structural representation that Fig. 1 is pressure control device described in the utility model, as shown in the figure, a kind of pressure control device, comprise source of the gas 1 and secondary seal supply air line 2, also comprise self-operated differential pressure regulator 3 and orifice plate 4, and T-valve 5, described self-operated differential pressure regulator import is connected with source of the gas by steel pipe, described self-operated differential pressure regulator outlet is connected with orifice plate by steel pipe, described orifice plate is connected with the import of T-valve by steel pipe, an outlet of described T-valve is connected with secondary seal supply air line by steel pipe, another outlet of described T-valve is connected with the film head 6 of Self-operated differential pressure regulaitng valve by steel pipe.Wherein, the aperture of described orifice plate 4 is 2-8mm; The diameter of described steel pipe is 10-50mm; The latus rectum of described self-operated differential pressure regulator is 10-50mm.
The feature of the technical program is that orifice plate downstream feedback fluctuates to the pressure of self-operated differential pressure regulator film head simultaneously when secondary seal pressure surge, variable valve top hole pressure, i.e. orifice plate upstream pressure also synchronization fluctuate.Because the pressure reduction of orifice plate upstream and downstream is constant, the aperture of orifice plate is constant, so the gas flow flowing through orifice plate is constant, therefore orifice flow is constant.When secondary seal pressure surge, secondary seal just can obtain constant sealing gas, ensure that the safe operation of secondary seal, and avoid wastes compressed nitrogen simultaneously.
In the technical program, this device comprises self-operated differential pressure regulator and orifice plate, this self-operated differential pressure regulator air intake opening and source of the gas connect with steel tube, the outlet of this self-operated differential pressure regulator connects with steel tube with orifice plate import, orifice plate outlet is connected with T-valve, an outlet of T-valve is connected with the film head air intake opening of self-operated differential pressure regulator with steel pipe, and another outlet of T-valve is connected with secondary seal supply air line.
Technique scheme only embodies the optimal technical scheme of technical solutions of the utility model; those skilled in the art all embody principle of the present utility model to some variations that wherein some part may be made, and belong within protection domain of the present utility model.
Claims (4)
1. a pressure control device, comprise source of the gas (1) and secondary seal supply air line (2), also comprise self-operated differential pressure regulator (3) and orifice plate (4), and T-valve (5), it is characterized in that, described self-operated differential pressure regulator import is connected with source of the gas by steel pipe, described self-operated differential pressure regulator outlet is connected with orifice plate by steel pipe, described orifice plate is connected with the import of T-valve by steel pipe, an outlet of described T-valve is connected with secondary seal supply air line by steel pipe, another outlet of described T-valve is connected with the film head (6) of Self-operated differential pressure regulaitng valve by steel pipe.
2. pressure control device according to claim 1, is characterized in that, the aperture of described orifice plate (4) is 2-8mm.
3. pressure control device according to claim 1, is characterized in that, the diameter of described steel pipe is 10-50mm.
4. pressure control device according to claim 1, is characterized in that, the latus rectum of described self-operated differential pressure regulator is 10-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285943.3U CN204595630U (en) | 2015-05-06 | 2015-05-06 | Pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285943.3U CN204595630U (en) | 2015-05-06 | 2015-05-06 | Pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204595630U true CN204595630U (en) | 2015-08-26 |
Family
ID=53931766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520285943.3U Expired - Fee Related CN204595630U (en) | 2015-05-06 | 2015-05-06 | Pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204595630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708114A (en) * | 2017-03-10 | 2017-05-24 | 太原市太航压力测试科技有限公司 | Method for realizing precise pressure control |
-
2015
- 2015-05-06 CN CN201520285943.3U patent/CN204595630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708114A (en) * | 2017-03-10 | 2017-05-24 | 太原市太航压力测试科技有限公司 | Method for realizing precise pressure control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zheng Xuecheng Document name: Notice of termination of patent right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |