CN212617654U - Control gas circuit of double-acting cylinder - Google Patents
Control gas circuit of double-acting cylinder Download PDFInfo
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- CN212617654U CN212617654U CN202020527551.4U CN202020527551U CN212617654U CN 212617654 U CN212617654 U CN 212617654U CN 202020527551 U CN202020527551 U CN 202020527551U CN 212617654 U CN212617654 U CN 212617654U
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Abstract
The utility model discloses a control gas circuit of a double-acting cylinder, which comprises a main gas circuit consisting of a normally open gas control valve and a normally closed gas control valve, wherein the field gas source is connected with a gas storage tank in series, and the normally open gas control valve and the normally closed gas control valve are connected between the gas storage tank and the double-acting cylinder in parallel; the control gas circuit consists of an electromagnetic valve connected to a main gas circuit positioned at the front end of the gas storage tank, and a control gas circuit formed by connecting the electromagnetic valve in parallel to a normally open gas control valve and a normally closed gas control valve; and the control gas path positioned at the front end of the electromagnetic valve, the main gas path positioned at the rear end of the gas storage tank and positioned at the front ends of the normally open gas control valve and the normally closed gas control valve are connected with the auxiliary gas path, the auxiliary gas path is provided with a switch ball valve, and the main gas path is provided with a check valve at the front ends of the nodes of the front end of the gas storage tank and the control gas path, which are positioned at the front ends of the auxiliary gas path and connected with the control gas path. The utility model discloses a simplify gas circuit connected mode, optimize double-acting cylinder and open control once more after the valve trouble resets.
Description
Technical Field
The utility model belongs to the technical field of valve control, especially, relate to a two effect cylinder control gas circuit.
Background
The cut-off valve applied to the chemical field usually adopts a cylinder as an actuating mechanism for realizing quick opening and closing; the action modes of the air cylinder are two, one is single action, and the other is double action; the single-acting cylinder is generally used for the occasion that the valve needs to reset when the air source is out of order, but to the heavy-calibre valve, because the cylinder specification that matches with it is great, if adopt the single-acting form, the cost will be very high, so in actual industrial application, to the heavy-calibre valve, for reduce cost, generally adopt the form that two effect cylinders add the gas pitcher to replace the single-acting cylinder to realize the purpose that the trouble resets, current gas circuit is transferred and is repaired or the road is changed complicacy, be unfavorable for on-the-spot maintenance and debugging and follow-up recovery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving above-mentioned technical problem, and provide double acting cylinder control gas circuit to realize simplifying gas circuit connected mode, optimize double acting cylinder after the valve trouble resets and open control once more. In order to achieve the above purpose, the utility model discloses technical scheme as follows:
the control gas circuit of the double-acting cylinder comprises a main gas circuit consisting of a normally open gas control valve and a normally closed gas control valve, wherein the normally open gas control valve and the normally closed gas control valve are connected in series with the gas storage tank and are connected between the gas storage tank and the double-acting cylinder in parallel; the control gas circuit consists of an electromagnetic valve connected to a main gas circuit positioned at the front end of the gas storage tank, and a control gas circuit formed by connecting the electromagnetic valve in parallel to a normally open gas control valve and a normally closed gas control valve; and the control gas path positioned at the front end of the electromagnetic valve, the main gas path positioned at the rear end of the gas storage tank and positioned at the front ends of the normally open gas control valve and the normally closed gas control valve are connected with the auxiliary gas path, the auxiliary gas path is provided with a switch ball valve, and the main gas path is provided with a check valve at the front ends of the nodes of the front end of the gas storage tank and the control gas path, which are positioned at the front ends of the auxiliary gas path and connected with the control gas path.
Specifically, a filtering pressure reducing valve is arranged at the front end of the main air path, which is positioned at the joint of the air storage tank and the auxiliary air path.
Specifically, the double-acting air cylinder controls the opening and closing of the connecting valve.
Compared with the prior art, the utility model discloses the beneficial effect of two effect cylinder control gas circuits mainly reflects:
when the on-site air source is out of gas, the valve is reset in a fault mode, if the valve is opened, the switch ball valve on the auxiliary air path is opened, gas in the gas storage tank enters the control air path through the filtering pressure reducing valve and the auxiliary air path, the control gas cannot reversely flow back to the on-site air source due to the fact that the check valve is arranged in front of the electromagnetic valve, when the electromagnetic valve is powered on, the double-acting cylinder drives the cylinder to rotate anticlockwise, and the valve is opened; therefore, the requirement of continuously controlling the valve under the condition that the electromagnetic valve is not connected with an external air source is met, the field operation requirement is greatly simplified, and the complex state of the air path is prevented from being changed again.
Drawings
Fig. 1 is a schematic view of a gas circuit connection according to an embodiment of the present invention;
the figures in the drawings represent:
1-double-acting cylinder, 2-normally open pneumatic control valve, 3-normally closed pneumatic control valve, 4-electromagnetic valve, 5-filtering pressure reducing valve, 6-air storage tank, 7-field air source, 8-switch ball valve, 9-check valve, a-main air path, b-control air path and c-auxiliary air path.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments.
Example (b):
referring to fig. 1, the control gas circuit of the double-acting cylinder in this embodiment includes a main gas circuit a composed of a normally open gas control valve 2 and a normally closed gas control valve 3, which are connected in series with an air storage tank 6 and connected in parallel between the air storage tank 6 and the double-acting cylinder 1; the control gas circuit b is formed by connecting an electromagnetic valve 4 connected with a main gas circuit a positioned at the front end of a gas storage tank 6, the electromagnetic valve 4 and a normally open gas control valve 2 and a normally closed gas control valve 3 in parallel; the control gas circuit b positioned at the front end of the electromagnetic valve 4, the main gas circuit b positioned at the rear end of the gas storage tank 6 and positioned at the front ends of the normally open gas control valve 2 and the normally closed gas control valve 3 are connected with the auxiliary gas circuit c, the auxiliary gas circuit c is provided with a switch ball valve 8, and the main gas circuit a is provided with a check valve 9 at the front end of the gas storage tank 6 and the control gas circuit b and positioned at the front end of a node where the auxiliary gas circuit c is connected with the control gas circuit b.
And a filtering and pressure reducing valve 5 is arranged at the front end of the main gas circuit a, which is positioned at the access node of the gas storage tank 6 and the auxiliary gas circuit c.
The double-acting cylinder 1 controls the opening and closing of the connecting valve.
Normally, the main gas circuit a and the control gas circuit b are supplied by an on-site gas source 7, when the electromagnetic valve 4 is electrified, the control gas drives the normally closed gas control valve 3 to be opened and the normally open gas control valve 2 to be closed, at the moment, gas in the main gas circuit a enters the double-acting cylinder 1 through the gas storage tank 6, the filtering pressure reducing valve 5 and the normally closed gas control valve 3, and drives the cylinder to rotate anticlockwise, and the valve is opened; when the electromagnetic valve 4 is de-energized, the normally-closed pneumatic control valve 3 is naturally closed and the normally-open pneumatic control valve 2 is naturally opened because the gas in the control gas circuit b cannot pass through the electromagnetic valve 4, and at the moment, the gas in the main gas circuit a enters the double-acting cylinder 1 through the gas storage tank 6, the filtering pressure reducing valve 5 and the normally-open pneumatic control valve 2, and drives the cylinder to rotate clockwise, so that the valve is closed; when the field air source 7 is cut off, the control air path b is free of air, the normally closed air control valve 3 is naturally closed, the normally open air control valve 2 is naturally opened, and at the moment, the air stored in the air storage tank 6 enters the double-acting air cylinder 1 through the filtering and reducing valve 5 and the normally open air control valve 2, so that the air cylinder is driven to rotate clockwise, the valve is closed, and fault resetting is realized.
When the field air source 7 loses air, the valve is reset in a fault mode, if the valve is opened at the moment, only the switch ball valve 8 on the auxiliary air path c needs to be opened, air in the air storage tank 6 enters the control air path b through the filtering and reducing valve 5 and the auxiliary air path c, the control air cannot reversely flow back to the field air source 7 because the check valve 9 is arranged in front of the electromagnetic valve, when the electromagnetic valve 4 is electrified, the control air drives the normally-closed air control valve 3 to be opened and the normally-open air control valve 2 to be closed, at the moment, the air in the air storage tank 6 enters the double-acting air cylinder 1 through the filtering and reducing valve 5 and the normally-closed air control valve 3, the air cylinder is driven; therefore, the requirement of continuously controlling the valve under the condition that the electromagnetic valve is not connected with an external air source is met, the field operation requirement is greatly simplified, and the complex state of the air path is prevented from being changed again.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (3)
1. The double-acting cylinder control gas circuit is characterized in that: the system comprises a main air path consisting of a normally open air control valve and a normally closed air control valve, wherein the normally open air control valve and the normally closed air control valve are connected in series with an on-site air source and an air storage tank and are connected between the air storage tank and a double-acting cylinder in parallel; the control gas circuit consists of an electromagnetic valve connected to a main gas circuit positioned at the front end of the gas storage tank, and a control gas circuit formed by connecting the electromagnetic valve in parallel to a normally open gas control valve and a normally closed gas control valve; and the control gas path positioned at the front end of the electromagnetic valve, the main gas path positioned at the rear end of the gas storage tank and positioned at the front ends of the normally open gas control valve and the normally closed gas control valve are connected with the auxiliary gas path, the auxiliary gas path is provided with a switch ball valve, and the main gas path is provided with a check valve at the front ends of the nodes of the front end of the gas storage tank and the control gas path, which are positioned at the front ends of the auxiliary gas path and connected with the control gas path.
2. A double acting cylinder control circuit as claimed in claim 1, wherein: and a filtering pressure reducing valve is arranged at the front end of the main air path at the joint of the air storage tank and the auxiliary air path.
3. A double acting cylinder control circuit as claimed in claim 1, wherein: the double-acting air cylinder controls the opening and closing of the connecting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020527551.4U CN212617654U (en) | 2020-04-10 | 2020-04-10 | Control gas circuit of double-acting cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020527551.4U CN212617654U (en) | 2020-04-10 | 2020-04-10 | Control gas circuit of double-acting cylinder |
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| Publication Number | Publication Date |
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| CN212617654U true CN212617654U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020527551.4U Active CN212617654U (en) | 2020-04-10 | 2020-04-10 | Control gas circuit of double-acting cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263445A (en) * | 2022-08-09 | 2022-11-01 | 中广核工程有限公司 | Method for controlling action of bypass regulating valve of steam turbine |
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2020
- 2020-04-10 CN CN202020527551.4U patent/CN212617654U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263445A (en) * | 2022-08-09 | 2022-11-01 | 中广核工程有限公司 | Method for controlling action of bypass regulating valve of steam turbine |
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Address after: 215000 988 Yuexiu Road, Lili Town, FENHU Economic Development Zone, Wujiang, Suzhou, Jiangsu Province Patentee after: Suzhou Antway Industrial Intelligent Technology Co.,Ltd. Address before: 215000 988 Yuexiu Road, Lili Town, FENHU Economic Development Zone, Wujiang, Suzhou, Jiangsu Province Patentee before: SUZHOU ANTIWEAR VALVES Co.,Ltd. |