Self-operated safety control device

Abstract

The utility model belongs to the technical field of self-operated valve control, and discloses a self-operated safety control device, which comprises a device main body, the device main body comprises a control module integrated at a connecting plate, and the control module comprises an oil tank, an oil outlet and an oil outlet which are sequentially connected. The device comprises a filter, a manual pump, a first valve block mechanism, a second valve block mechanism, an interface valve, a quick release valve and a hydraulic valve, the oil tank is used for containing medium oil, the filter is arranged at an oil outlet of the oil tank and used for filtering the medium oil, the manual pump is used for sucking the medium oil out of the oil tank and pressurizing the medium oil, the medium oil is divided into two paths at the manual pump, one path is connected to the interface valve, and the other path is sequentially connected with the first valve block mechanism, the second valve block mechanism and the interface valve. After a pilot port of the interface valve is pressed, medium oil at the interface valve reaches the hydraulic valve through the quick release valve, and the hydraulic valve executes the valve opening action after receiving the medium oil. And the structure is compact, the size is small, installation is convenient, and the environment requirement for high space use requirements can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of self-operated valve control, in particular to a self-operated safety control device. Background Art

[0002] The self-operated control device, also known as the self-operated control valve, is a control valve that can achieve automatic control by operating its own regulating mechanism without the need for external auxiliary energy such as electricity or compressed air.

[0003] The existing self-operated control device is mainly composed of a manual pump, an oil tank, a pressure regulating valve, an accumulator, a switch valve, a relief valve, etc., and each hydraulic component is connected point-to-point by a hydraulic pipeline. However, the existing self-operated control device has a variety of structures between the components, and some components such as hydraulic components are large in size, which makes it difficult to adapt to certain scenes with small spaces. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a self-powered safety control device, which has the advantages of compact structure, small size, convenient installation, and can meet the environmental requirements with high requirements on space use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-powered safety control device, which includes a device body, the device body includes a control module integrated at a connecting plate, the control module includes an oil tank, a filter, a manual pump, a first valve block mechanism, a second valve block mechanism, an interface valve, a quick relief valve and a hydraulic valve connected in sequence; the oil tank is used to hold medium oil, the filter is arranged at the oil outlet of the oil tank and is used to filter the medium oil, the manual pump is used to suck the medium oil out of the oil tank and pressurize it, the medium oil is located at the manual pump and is divided into two paths, one path is connected to the interface valve, and the other path is connected to the first valve block mechanism, the second valve block mechanism and the interface valve in sequence, after the pilot port of the interface valve is subjected to pressure, the medium oil at the interface valve reaches the hydraulic valve through the quick relief valve, and the hydraulic valve performs a valve opening action after receiving the medium oil.

[0006] Preferably, the first valve block mechanism includes a pressure reducing valve, a first relief valve and an accumulator, the pressure reducing valve is connected to one outlet of the manual pump, the first relief valve, the accumulator and the second valve block mechanism are commonly connected to one outlet of the pressure reducing valve and connected to the second valve block mechanism, the first relief valve is connected to another outlet of the pressure reducing valve and connected to the second valve block mechanism; a high and low pressure sensor combination valve is provided on one side of the accumulator; the first valve block mechanism is used to reduce the pressure of the medium oil pressurized by the manual pump and form a pilot pressure, the pilot pressure is located at the first valve block mechanism and is divided into two paths, one path enters the second valve block mechanism, and the other path enters the low pressure sensor valve from the accumulator into the high and low pressure sensor combination valve, the high and low pressure sensor combination valve is connected to an isolation combination valve, and the isolation combination valve is connected to a pipeline; the high and low pressure sensor combination valve is provided with an oil return port, and the oil return port is fed back to the first valve block mechanism.

[0007] Preferably, the high- and low-pressure sensor combination valve is connected to a three-way ball valve, the first path of the three-way ball valve is connected to the high-pressure sensor valve of the high- and low-pressure sensor combination valve, the second path of the three-way ball valve is connected between the accumulator and the high- and low-pressure sensor combination valve, the third path of the three-way ball valve is connected to a solenoid valve, and the oil outlet of the solenoid valve is connected to the second valve block mechanism.

[0008] Preferably, the second valve block mechanism comprises a pilot combination valve.

[0009] Preferably, the oil tank is directly connected to the quick discharge valve via another oil outlet.

[0010] Preferably, the solenoid valve is directly connected to the quick relief valve through another oil outlet.

[0011] Preferably, a second overflow valve is provided between the interface valve and the solenoid valve.

[0012] Preferably, the solenoid valve is connected with a fusible plug.

[0013] Preferably, the manual pump is connected to a first pressure gauge.

[0014] Preferably, a second pressure gauge is connected between the accumulator and the high- and low-pressure sensor combination valve.

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

[0016] 1. When the utility model is actually used, the manual pump is pressurized, and the medium oil is output in a branched manner. One path goes directly to the interface valve, and the other path flows through the first valve block mechanism and is reduced in pressure by the pressure reducing valve to obtain a pilot pressure. The pilot pressure is output in a branched manner at the same time. One path goes directly to the second valve block mechanism, and the other path is output to the high and low pressure sensor combination valve, and then to the pilot port of the pilot combination valve through the solenoid valve. After the pilot port of the pilot combination valve obtains pressure, the pilot pressure directly passes through the pilot port of the interface valve. After the pilot port of the interface valve obtains pressure, the medium oil of the interface valve directly passes through the quick relief valve to the hydraulic valve to realize the valve opening action.

[0017] 2. The device provided by the utility model has a compact structure, small size, and convenient installation, which can meet the environmental requirements of high space usage. The modular design makes maintenance and replacement convenient, which improves the maintenance guarantee time. At the same time, the use of pipe joints is reduced, thereby reducing leakage points and ensuring the reliability of the device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the principle of the main body of the device in the utility model;

[0019] Figure 2 It is a structural schematic diagram of the main body of the device in the utility model;

[0020] Figure 3 It is an exploded schematic diagram of the main body of the device of the utility model.

[0021] In the figure: 1. Oil tank; 2. Filter; 3. Manual pump; 4. Pressure reducing valve; 5. First relief valve; 6. Accumulator; 7. Pilot combination valve; 8. Interface valve; 9. Relief valve; 10. Quick relief valve; 11. Hydraulic valve; 12. First pressure gauge; 13. Pressure gauge; 14. Fusible plug; 15. Three-way ball valve; 16. High and low pressure sensor combination valve; 17. Isolation combination valve; 18. Pipeline; 19. Solenoid valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 3As shown, the utility model provides a self-powered safety control device, which includes a device body, the device body includes a control module integrated at a connecting plate 300, the control module includes an oil tank 1, a filter 2, a manual pump 3, a first valve block mechanism 100, a second valve block mechanism 200, an interface valve 8, a quick relief valve 10 and a hydraulic valve 11 connected in sequence; the oil tank 1 is used to contain medium oil, the filter 2 is arranged at the oil outlet of the oil tank 1 and is used to filter the medium oil, the manual pump 3 is used to suck the medium oil out of the oil tank 1 and pressurize it, the medium oil is located at the manual pump 3 and is divided into two paths, one path is connected to the interface valve 8, and the other path is connected to the first valve block mechanism 100, the second valve block mechanism 200 and the interface valve 8 in sequence, after the pilot port of the interface valve 8 is pressurized, the medium oil at the interface valve 8 reaches the hydraulic valve 11 through the quick relief valve 10, the hydraulic valve 11 performs a valve opening action after receiving the medium oil, and the oil tank 1 is directly connected to the quick relief valve 10 through another oil outlet.

[0024] Among them, the manual pump 3 can be manually operated. The basic structure of the manual pump 3 includes a pump body, a piston, a one-way valve and a handle. When the handle is pushed forward, the piston moves forward, and the space inside the pump body gradually increases, forming a low-pressure area. At this time, the one-way valve opens at the entrance of the pump body, allowing external air or liquid to enter the pump body. On the contrary, when the handle is pulled backward, the piston moves backward, and the space inside the pump body gradually decreases, forming a high-pressure area. By continuously repeating this process of pumping and compressing, the air or liquid inside the pump body is gradually extracted and compressed to form a vacuum state or a high-pressure state, thereby realizing the suction and discharge function of the pump, and a first pressure gauge 12 is connected to the manual pump 3, and the first pressure gauge 12 is used to detect the pressure value at the manual pump 3.

[0025] Among them, the interface valve 8 isolates the vacuum in the vacuum pipe from the outside atmosphere when it is not working, and the valve body opens to use negative pressure to suck in the medium oil when it is working, thereby ensuring the effectiveness and efficiency of the device body, and at the same time being able to effectively control the circulation of the medium oil and the sealing of the device body.

[0026] The quick relief valve 10 is used to reduce the pressure of the medium oil. At the same time, the opening of the quick relief valve 10 is adjusted by the pressure behind the valve to keep the pressure behind the valve within a certain range. When the inlet pressure keeps changing, the outlet pressure is kept within the set range to facilitate the medium oil to flow to the hydraulic valve 11. The hydraulic valve 11 performs the valve opening action after receiving the medium oil.

[0027] Specifically, the second valve block mechanism 200 includes a pilot combination valve 7, the first valve block mechanism 100 includes a pressure reducing valve 4, a first relief valve 5 and an accumulator 6, the pressure reducing valve 4 is connected to one outlet of the manual pump 3, the first relief valve 5, the accumulator 6, and the second valve block mechanism 200 are connected to one outlet of the pressure reducing valve 4 and connected to the second valve block mechanism 200, the first relief valve 5 is connected to another outlet of the pressure reducing valve 4 and connected to the second valve block mechanism 200; a high and low pressure sensor combination valve 16 is provided on one side of the accumulator 6; the first The valve block mechanism 100 is used to reduce the pressure of the medium oil pressurized by the manual pump 3 and form a pilot pressure. The pilot pressure is located at the first valve block mechanism 100 and is divided into two paths. One path enters the second valve block mechanism 200, and the other path enters the low-pressure sensor valve of the self-accumulator 6 and enters the high- and low-pressure sensor combination valve 16. The high- and low-pressure sensor combination valve 16 is connected to an isolation combination valve 17, and the isolation combination valve 17 is connected to a pipeline 18; the high- and low-pressure sensor combination valve 16 is provided with an oil return port, and the oil return port is fed back to the first valve block mechanism 100.

[0028] The pressure reducing valve 4 is a valve which reduces the inlet pressure to the outlet pressure of the manually set threshold value through regulation, and automatically keeps the outlet pressure stable by relying on the energy of the medium oil itself.

[0029] The accumulator 6 is an energy storage device in the main body of the hydraulic and pneumatic device. The accumulator 6 converts the energy in the main body of the device into compression energy or potential energy and stores it at an appropriate time. When the main body of the device needs it, it converts the compression energy or potential energy into hydraulic or gas pressure energy and releases it to replenish the main body of the device. When the pressure of the main body of the device increases instantly, the accumulator 6 can absorb this part of the energy to ensure that the pressure of the entire main body of the device is normal. A second pressure gauge 13 is connected between the accumulator 6 and the high and low pressure sensor combination valve 16. The second pressure gauge 13 is used to detect the pressure value at the accumulator 6.

[0030] The first relief valve 5 (hereinafter referred to as the second relief valve 9 has the same function as the first relief valve 5) is a hydraulic pressure control valve, which mainly plays the role of constant pressure relief, pressure stabilization, unloading and safety protection in the device body.

[0031] The high-low pressure sensor combination valve 16 has a high-pressure sensor valve and a low-pressure sensor valve, and different combinations of pressure signals can achieve precise control of fluid flow. For example, when one control port receives a high-pressure signal and the other receives a low-pressure signal, the valve core will move toward the low-pressure sensor valve, thereby changing the flow state of the fluid.

[0032] The isolation combination valve 17 controls the on-off of the medium oil by closing and opening.

[0033] Specifically, the high and low pressure sensor combination valve 16 is connected to the three-way ball valve 15, the first path of the three-way ball valve 15 is connected to the high pressure sensor valve of the high and low pressure sensor combination valve 16, the second path of the three-way ball valve 15 is connected between the accumulator 6 and the high and low pressure sensor combination valve 16, the third path of the three-way ball valve 15 is connected to the solenoid valve 19, the oil outlet of the solenoid valve 19 is connected to the second valve block mechanism 200, the solenoid valve 19 is directly connected to the quick discharge valve 10 through another oil outlet, and a second overflow valve 9 is provided between the interface valve 8 and the solenoid valve 19.

[0034] The solenoid valve 19 is connected to a fusible plug 14, which is used to utilize the low melting point alloy in the device body to melt at a higher temperature, thereby opening a channel to allow gas to be discharged from the hole originally filled with the fusible alloy to release pressure.

[0035] like Figure 2 , Figure 3 As shown, the valve block 1 is connected and fixed with the manual pump 3 and the second valve block mechanism 200 by screws, and a sealing filler is used in the middle to meet the sealing of the hydraulic circuit. The interface valve 8 is fixed to the first valve block structure 100 by screws, the manual pump 3 is fixed to the connecting plate by screws, and the oil tank 1 is fixed to the connecting plate 300 by screws.

[0036] The device provided in this embodiment has a compact structure, a small volume, and is easy to install, which can meet the requirements of environments with high space requirements. The modular design makes maintenance and replacement convenient, which improves the maintenance guarantee time. At the same time, the use of pipe joints is reduced, thereby reducing leakage points and ensuring the reliability of the device body.

[0037] Principle and process of this utility model:

[0038] The manual pump 3 is pressurized, and the medium oil is output in two ways. One way goes directly to the interface valve 8, and the other way flows through the first valve block mechanism 100 and is reduced in pressure by the pressure reducing valve 4 to obtain a pilot pressure. The pilot pressure is output in two ways at the same time. One way goes directly to the second valve block mechanism 200, and the other way is output to the high and low pressure sensor combination valve 16, and then to the pilot port of the pilot combination valve 7 through the solenoid valve 19. After the pilot port of the pilot combination valve 7 obtains pressure, the pilot pressure directly passes to the pilot port of the interface valve 8. After the pilot port of the interface valve 8 obtains pressure, the medium oil of the interface valve 8 directly passes through the quick relief valve 10 to the hydraulic valve 11 to realize the valve opening action.

[0039] Among them, when the fusible plug 14 melts or the solenoid valve 19 loses power, the hydraulic oil in the pilot port of the pilot combination valve 7 will be depressurized, and the pilot combination valve 7 will release the pilot pressure in the interface valve 8. The interface valve 8 releases the inlet pressure of the quick relief valve 10. The pressure drop triggers the quick relief valve 10 to release the hydraulic oil in the valve chamber of the hydraulic valve 11, thereby closing the valve.

[0040] When the high-low pressure sensor combination valve 16 senses that the pipeline pressure is too high or too low, it will also release the pressure of the pilot port of the pilot combination valve 7 to close the valve.

[0041] The pilot combination valve 7 can be shut off by manually pulling out its handle to release the pilot pressure in the interface valve 8.

[0042] The three-way ball valve 15 can realize the function of shielding the high- and low-pressure sensor combination valve 16 when the high- and low-pressure sensor combination valve 16 is damaged.

[0043] The electromagnetic valve 19 can be remotely controlled to lose power, thus realizing remote or automatic valve closing.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-powered safety control device, characterized in that: The invention comprises a device body, the device body comprises a control module integrated at a connection plate, the control module comprises an oil tank (1), a filter (2), a manual pump (3), a first valve block mechanism (100), a second valve block mechanism (200), an interface valve (8), a quick discharge valve (10) and a hydraulic valve (11) which are connected in sequence; the oil tank (1) is used to contain medium oil, the filter (2) is arranged at the oil outlet of the oil tank (1) and is used to filter the medium oil, and the manual pump (3) is used to transfer the medium oil to the oil tank (1). The medium oil is sucked out from the oil tank (1) and pressurized. The medium oil is located at the manual pump (3) and is divided into two paths, one of which is connected to the interface valve (8), and the other is connected in sequence to the first valve block mechanism (100), the second valve block mechanism (200) and the interface valve (8). After the pilot port of the interface valve (8) is pressurized, the medium oil at the interface valve (8) reaches the hydraulic valve (11) through the quick relief valve (10). After receiving the medium oil, the hydraulic valve (11) performs a valve opening action.

2. A self-powered safety control device according to claim 1, characterized in that: The first valve block mechanism (100) comprises a pressure reducing valve (4), a first relief valve (5) and an accumulator (6); the pressure reducing valve (4) is connected to one outlet of the manual pump (3); the first relief valve (5), the accumulator (6) and the second valve block mechanism (200) are connected to one outlet of the pressure reducing valve (4) and to the second valve block mechanism (200); the first relief valve (5) is connected to another outlet of the pressure reducing valve (4) and to the second valve block mechanism (200); a high and low pressure sensor combination valve (16) is provided on one side of the accumulator (6); the first valve block mechanism ( 100) is used to reduce the pressure of the medium oil pressurized by the manual pump (3) and form a pilot pressure. The pilot pressure is located at the first valve block mechanism (100) and is divided into two paths. One path enters the second valve block mechanism (200), and the other path enters the low-pressure sensor valve from the accumulator (6) into the high-low pressure sensor combination valve (16). The high-low pressure sensor combination valve (16) is connected to an isolation combination valve (17), and the isolation combination valve (17) is connected to a pipeline (18); the high-low pressure sensor combination valve (16) is provided with an oil return port, and the oil return port is fed back to the first valve block mechanism (100).

3. A self-powered safety control device according to claim 2, characterized in that: The high-low pressure sensor combination valve (16) is connected to a three-way ball valve (15), a first path of the three-way ball valve (15) is connected to a high-pressure sensor valve of the high-low pressure sensor combination valve (16), a second path of the three-way ball valve (15) is connected between the accumulator (6) and the high-low pressure sensor combination valve (16), a third path of the three-way ball valve (15) is connected to an electromagnetic valve (19), and an oil outlet of the electromagnetic valve (19) is connected to a second valve block mechanism (200).

4. A self-powered safety control device according to claim 3, characterized in that: The second valve block mechanism (200) comprises a pilot combination valve (7).

5. A self-powered safety control device according to claim 1, characterized in that: The oil tank (1) is directly connected to the quick discharge valve (10) via another oil outlet.

6. A self-powered safety control device according to claim 3, characterized in that: The solenoid valve (19) is directly connected to the quick discharge valve (10) via another oil outlet.

7. A self-powered safety control device according to claim 6, characterized in that: A second overflow valve (9) is provided between the interface valve (8) and the solenoid valve (19).

8. A self-powered safety control device according to claim 6, characterized in that: The solenoid valve (19) is connected to a fusible plug (14).

9. A self-powered safety control device according to claim 1, characterized in that: The manual pump (3) is connected to a first pressure gauge (12).

10. A self-powered safety control device according to claim 2, characterized in that: A second pressure gauge (13) is connected between the accumulator (6) and the high-low pressure sensor combination valve (16).

Images