Air separation turbine expansion system regulation and control device

Abstract

The utility model relates to the technical field of pressure regulation, in particular to a regulation and control device of an air separation turbine expansion system. According to the technical scheme, the check valve comprises a valve body, a sliding rod, an observation barrel and a cavity, the observation barrel is installed at the top end of the valve body, scales are arranged on the observation barrel, the cavity is installed at the top end of the observation barrel, a membrane is arranged in the cavity, the sliding rod is fixed to the lower surface of the membrane, a plug block is arranged at the bottom end of the sliding rod and located in the valve body, and the valve body is arranged in the cavity. A pointer is fixed on the sliding rod, and the position of the pointer corresponds to the position of the scales. According to the utility model, the position of the valve core can be directly observed through the matching of the structures, the force applied to the valve core by the diaphragm can be intuitively known, the stroke of the valve rod can be conveniently observed, the repeated test by personnel is not needed during installation, and the installation steps are simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure regulation, in particular to a control device for an air separation turbine expansion system. Background Art

[0002] The self-operated regulating valve is a new type of regulating valve. Compared to manual regulating valves, it offers the advantage of automatic adjustment; compared to electric regulating valves, it requires no external power. Applications have proven that proper use of this valve in closed water circulation systems (such as hot water heating systems and air conditioning chilled water systems) can easily achieve flow distribution, achieve dynamic balance, greatly simplify system commissioning, and stabilize pump operation.

[0003] The air separation unit uses expander-pressurized air for instrument gas. The reflux valve at the pressurized end of the expander cannot be fully closed due to the high pressure of the instrument gas, and the working efficiency of the expander cannot be maximized. Usually, a self-operated regulating valve is used to adjust the pipeline pressure.

[0004] During use, the existing self-operated regulating valve cannot directly observe the valve core position, cannot intuitively understand the force exerted by the diaphragm on the valve core, and is difficult to observe the valve stem stroke. During installation, personnel need to repeatedly test and adjust the valve core pressure, which makes installation very troublesome.

[0005] To this end, we propose an air separation turbine expansion system control device to solve the existing problems. Utility Model Content

[0006] The purpose of the utility model is to address the problems existing in the background technology and to propose an air separation turbine expansion system control device.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a control device for an air separation turbine expansion system, comprising a valve body, a sliding rod, an observation tube and a chamber, an observation tube being installed at the top of the valve body, a scale being provided on the observation tube, a chamber being installed at the top of the observation tube, a diaphragm being provided inside the chamber, a sliding rod being fixed to the lower surface of the diaphragm, a block being provided at the bottom end of the sliding rod, the block being located in the valve body, a pointer being fixed on the sliding rod, and the positions of the pointer and the scale corresponding to each other.

[0008] Preferably, connecting pipes are symmetrically provided on both sides of the valve body, and flange structures are provided at the ends of the connecting pipes;

[0009] A partition is provided inside the valve body, and a flow hole is opened on the partition. The shape of the flow hole is adapted to the shape of the plug.

[0010] Preferably, a sliding hole adapted to the sliding rod is provided on the valve body and the chamber, and a sliding seal is provided at the contact position between the sliding rod and the sliding hole.

[0011] Preferably, the chamber is divided into two independent upper and lower spaces by a diaphragm, and the lower space of the chamber is connected to a pressure inlet;

[0012] The top end of the chamber is threadedly mounted with a threaded block;

[0013] A spring is provided between the threaded block and the diaphragm, and two ends of the spring are in contact with the lower surface of the threaded block and the upper surface of the diaphragm respectively;

[0014] A turning handle is fixed on the upper surface of the threaded block.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] During use, the control device for an air separation turbine expansion system of the utility model can be fixed to a pipeline in the air separation turbine expansion system where pressure needs to be adjusted. During operation, when the pipeline pressure is high, the pressure in the pipeline reaches the pressure inlet through the pipeline and then enters the lower part of the chamber. At this time, the pressure drives the diaphragm to deform upward, thereby driving the slide rod upward, so that the plug is away from the flow hole, thereby allowing the medium to flow in the valve body.

[0017] When the pipeline pressure is low, the diaphragm deforms downward under the deformation elastic force of the spring, causing the slide rod to move downward, causing the plug to be blocked in the flow hole;

[0018] When the slide rod moves up and down, the slide rod drives the pointer to move, and the position of the plug and the pressure on the plug at this time can be read through the scale. The utility model can directly observe the position of the valve core, and can intuitively understand the force applied by the diaphragm to the valve core, which is convenient for observing the valve stem stroke, eliminating the need for repeated testing during installation and simplifying the installation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the plug installation structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the plug installation structure of the utility model;

[0022] Figure 4 For the utility model Figure 2 Schematic diagram of the cross-sectional structure.

[0023] Reference numerals:

[0024] 1. Valve body; 2. Connecting pipe; 3. Partition; 4. Flow hole; 5. Plug; 6. Slide rod; 7. Scale; 8. Pointer; 9. Observation tube; 10. Diaphragm; 11. Chamber; 12. Threaded block; 13. Turning handle; 14. Spring; 15. Pressure inlet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1-Figure 4 As shown, the utility model proposes an air separation turbine expansion system control device, including a valve body 1, a slide rod 6, an observation tube 9 and a chamber 11. The top of the valve body 1 is installed with an observation tube 9, and a scale 7 is provided on the observation tube 9. The top of the observation tube 9 is installed with a chamber 11. A diaphragm 10 is provided inside the chamber 11. The lower surface of the diaphragm 10 is fixed with a slide rod 6. The bottom end of the slide rod 6 is provided with a plug 5. The plug 5 is in the valve body 1. A pointer 8 is fixed on the slide rod 6. The positions of the pointer 8 and the scale 7 correspond to each other.

[0028] Based on Example 1:

[0029] During operation, when the pipeline pressure is high, the pressure in the pipeline reaches the pressure inlet 15 through the pipeline, and then enters the lower part of the chamber 11. At this time, the pressure drives the diaphragm 10 to deform upward, thereby driving the slide rod 6 upward, so that the plug 5 is away from the flow hole 4, so that the medium can flow in the valve body 1;

[0030] When the pipeline pressure is low, the diaphragm 10 deforms downward under the deformation elastic force of the spring 14, thereby causing the slide rod 6 to move downward, so that the plug 5 is blocked in the flow hole 4;

[0031] When the slide bar 6 moves up and down, the slide bar 6 drives the pointer 8 to move, and the position of the plug 5 and the pressure on the plug 5 at this time can be read through the scale 7.

[0032] A self-operated regulating valve is added to the instrument pipeline after the boosting end to automatically adjust the instrument gas pressure, so that the expander reflux valve is fully closed, the expander working efficiency is maximized, and the liquid output is increased.

[0033] Example 2

[0034] like Figure 1-Figure 4As shown, the present invention proposes an air separation turbine expansion system control device. Compared with the first embodiment, this embodiment further includes: connecting pipes 2 are symmetrically provided on both sides of the valve body 1, and flange structures are provided at the ends of the connecting pipes 2;

[0035] The device can be fixed on the pipeline requiring pressure adjustment in the air separation turbine expansion system through a flange structure.

[0036] A partition plate 3 is provided inside the valve body 1 , and a flow hole 4 is opened on the partition plate 3 . The shape of the flow hole 4 matches the shape of the plug 5 . The partition plate 3 can separate the interior of the valve body 1 into two parts.

[0037] The valve body 1 and the chamber 11 are both provided with sliding holes adapted to the sliding rod 6 , and a sliding seal is provided at the contact position between the sliding rod 6 and the sliding hole. The design of the seal ensures the airtightness of the device.

[0038] The chamber 11 is divided into two independent spaces, upper and lower, by the diaphragm 10. The lower space of the chamber 11 is connected to a pressure inlet 15.

[0039] During operation, when the pipeline pressure is high, the pressure in the pipeline reaches the pressure inlet 15 through the pipeline, and then enters the lower part of the chamber 11.

[0040] The top end of the chamber 11 is threadedly mounted with a threaded block 12;

[0041] A spring 14 is provided between the threaded block 12 and the diaphragm 10, and both ends of the spring 14 are in contact with the lower surface of the threaded block 12 and the upper surface of the diaphragm 10 respectively;

[0042] A turning handle 13 is fixed to the upper surface of the threaded block 12;

[0043] Through the cooperation of the above structure, when the elastic force of the spring 14 needs to be adjusted, the threaded block 12 can be rotated by turning the handle 13 to move the threaded block 12 up and down, thereby changing the pressure applied by the spring 14 to the diaphragm 10.

[0044] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A control device for an air separation turbine expansion system, comprising a valve body (1), a slide rod (6), an observation tube (9) and a chamber (11), characterized in that: An observation tube (9) is installed at the top of the valve body (1), and a scale (7) is provided on the observation tube (9). A chamber (11) is installed at the top of the observation tube (9), and a diaphragm (10) is provided inside the chamber (11). A slide rod (6) is fixed to the lower surface of the diaphragm (10), and a plug (5) is provided at the bottom end of the slide rod (6). The plug (5) is located in the valve body (1). A pointer (8) is fixed on the slide rod (6), and the positions of the pointer (8) and the scale (7) correspond to each other.

2. The air separation turbine expansion system control device according to claim 1, characterized in that: Connecting pipes (2) are symmetrically arranged on both sides of the valve body (1), and flange structures are arranged at the ends of the connecting pipes (2); A partition plate (3) is provided inside the valve body (1), and a flow hole (4) is opened on the partition plate (3). The shape of the flow hole (4) is matched with the shape of the plug block (5).

3. The air separation turbine expansion system control device according to claim 1, characterized in that: The valve body (1) and the chamber (11) are both provided with a sliding hole matched with the sliding rod (6), and a sliding seal is provided at the contact position between the sliding rod (6) and the sliding hole.

4. The air separation turbine expansion system control device according to claim 1, characterized in that: The chamber (11) is divided into two independent upper and lower spaces by a diaphragm (10), and the lower space of the chamber (11) is connected to a pressure inlet (15); A threaded block (12) is threadedly mounted on the top end of the chamber (11); A spring (14) is provided between the threaded block (12) and the diaphragm (10), and two ends of the spring (14) are in contact with the lower surface of the threaded block (12) and the upper surface of the diaphragm (10) respectively; A turning handle (13) is fixed on the upper surface of the threaded block (12).

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