Automatic stop valve for abnormal pressure of gasification station

Abstract

The utility model discloses an automatic stop valve for pressure abnormity of a gasification station, which relates to the technical field of stop valves, and comprises a driving end, a ball valve and a connecting pipe, the lower end of the driving end and the upper end of the ball valve are respectively and fixedly connected with a connecting sheet, the connecting sheets are fixedly connected through a screw rod, a support plate is fixed between the connecting sheets, and the support plate is fixedly connected with the ball valve. The supporting plate is located in the middle of the connecting piece, threaded cylinders are fixed to the two sides of the middle of the supporting plate, and protective supporting mechanisms are arranged at the four corners of the connecting piece and are correspondingly connected with the threaded cylinders in a matched mode. The utility model discloses an automatic stop valve for pressure abnormity of a gasification station. The protective supporting mechanisms are arranged at the four corners of the connecting piece, and the sealing strips and the sealing pieces are adopted for multiple sealing, so that external oil stains, dust and other pollutants are effectively prevented from entering the connecting part between the driving end and the ball valve, rusting and clamping stagnation of a driving rod and a connecting bolt are avoided, power transmission of the driving end is guaranteed, and the reliability of the valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cut -off valve technical field, concretely is a kind of gasification station pressure abnormal automatic cut -off valve. BACKGROUND

[0002] In the storage and transportation of flammable and explosive gas such as natural gas, liquefied petroleum gas, as a key facility, the safe operation of gasification station is crucial;Pressure anomaly is one of the common faults of gasification station, and if not handled in time, it is easy to cause leakage, explosion and other serious accidents;Therefore, the automatic cut-off valve is arranged in the pipeline system of gasification station, and the gas source is quickly cut off when the pressure is abnormal, which is an effective measure to ensure the safe operation of gasification station.

[0003] At present, the existing automatic cut-off valve of gasification station pressure anomaly adopts the structure form that driving end drives ball valve, drives the rotation of spherical valve inside ball valve through driving end, and realizes the on-off of pipeline. However, the connection structure between driving end and ball valve in the prior art has defects;The connecting part between driving end and ball valve lacks effective protection measures, is easily eroded by external oil stains, dust and other pollutants, causes the rust and stagnation of driving rod and connecting bolt of driving end, affects the power transmission of driving end, and even causes the failure of valve. UTILITY MODEL CONTENT

[0004] In view of the defects of prior art, the utility model provides an automatic cut-off valve of gasification station pressure anomaly, which solves the problems in the above background art.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: an automatic cut-off valve of gasification station pressure anomaly, including driving end, ball valve and connecting pipe, the lower end of driving end and the upper end of ball valve are fixedly connected with connecting piece respectively, the connecting piece is fixedly connected through screw rod, the supporting plate is fixed between the connecting pieces, the supporting plate is located at the middle position of connecting piece, the middle two sides of supporting plate are fixed with threaded barrel, the four corners of connecting piece are provided with protection support mechanism, and are matched with threaded barrel and connected correspondingly.

[0006] Further, the protection support mechanism includes protection support plate, the protection support plate is arranged at the four corners of the two connecting pieces, the outside of the protection support plate is provided with screw, and the screw is threadedly connected with the threaded barrel through the protection support plate.

[0007] Further, the connecting part of the protection support plate is fixedly connected with sealing strip, and the two sealing strips are arranged opposite to each other.

[0008] Further, the upper and lower ends of the protection support plate are fixedly connected with sealing piece, and the sealing piece is arranged opposite to the upper and lower ends of the inner side of the connecting piece.

[0009] Further, the support plate is fixed with reinforcing ribs on both sides of the upper and lower ends, one end of the reinforcing rib is fixedly connected with the side surface of the support plate, and the other end is fixedly connected with the end surface of the connecting piece.

[0010] Further, the driving end is an electric driving device or a pneumatic driving device.

[0011] Further, the ball valve is a floating ball valve or a fixed ball valve.

[0012] Further, the connecting pipe is a flange connection or a threaded connection.

[0013] The utility model provides a kind of gas station pressure abnormal automatic cut-off valve.Compared with prior art, it has the following beneficial effects:

[0014] The gas station pressure abnormal automatic cut-off valve;By setting protective support mechanism at the four corners of the connecting piece, and using sealing strip and sealing sheet for multiple sealing, effectively prevent the connection part between the driving end and the ball valve from being polluted by external oil stains, dust and other pollutants, avoid the corrosion and jamming of the driving rod and connecting bolt, ensure the power transmission of the driving end, and improve the reliability of the valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the utility model;

[0016] Figure 2 It is the structure diagram of protective support plate and screw of the utility model;

[0017] Figure 3 It is the structure diagram of protective support plate and screw of the utility model;

[0018] Figure 4 It is the structure diagram of connecting piece and protective support plate of the utility model;

[0019] Figure 5 It is Figure 2 The enlarged structure diagram of A in the middle;

[0020] Figure 6 It is Figure 4 The enlarged structure diagram of B in the middle.

[0021] In the figure: 1, driving end;2, ball valve;3, connecting pipe;4, connecting piece;5, support plate;6, reinforcing rib;7, threaded cylinder;8, protective support plate;9, screw;10, sealing sheet;11, sealing strip. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a gasification station pressure abnormal automatic cut-off valve, emergency cut valve is prior art, specifically by drive end 1, ball valve 2 and connecting pipe 3 are connected, when emergency, the spherical valve in ball valve 2 is driven by drive end 1 to rotate and close the connecting pipe 3 of both ends, the design is mainly aimed at the connection between drive end 1 and ball valve 2, and the upper end of ball valve 2 is fixedly connected with connecting piece 4 in the lower end of drive end 1, and connecting piece 4 is fixedly arranged by screw rod, and support plate 5 is fixed between the upper and lower ends of connecting piece 4, and support plate 5 is arranged at the middle position of connecting piece 4, and threaded cylinder 7 is fixed on both sides of support plate 5, and protective support mechanism is arranged at the four corners of the two connecting pieces 4, the driving rod and screw rod of drive end 1 in the interior are protected by protective support mechanism, to avoid the oil dirt of outside from sticking on driving rod and screw rod to affect the driving power transmission of drive end 1.

[0024] The protective support mechanism specifically includes protective support plate 8, which is placed at the four corners of the two connecting pieces 4, and screw 9 is arranged outside the protective support plate 8, and the screw 9 is threadedly connected with the threaded cylinder 7 by penetrating the protective support plate 8, so that the overall protection effect can be increased by the protective support plate 8, and at the same time, the protective support plate 8 is arranged between the upper and lower ends of the two connecting pieces 4 to form stable support, so that the support stability is improved.

[0025] The protective support plate 8 is fixedly connected with sealing strips 11 at the connection, and the two sealing strips 11 are in contact with each other to stably seal the connection of the protective support plate 8, so that the protection effect is further improved; at the same time, sealing pieces 10 are fixedly connected to the upper and lower ends of the protective support plate 8, and the sealing pieces 10 are arranged in contact with the inner upper and lower ends of the connecting pieces 4, so that the sealing effect is achieved, and the oil dirt from outside is prevented from entering the interior to affect the driving.

[0026] Reinforcing ribs 6 are fixed to the upper and lower ends of the support plate 5, one end of the reinforcing rib 6 is fixedly connected with the side surface of the support plate 5, and the other end is fixedly connected with the end surface of the connecting piece 4, so that the support performance of the support plate 5 is further improved, and the stability is also improved.

Claims

1. A gasification station pressure anomaly automatic cut-off valve, comprising a driving end (1), a ball valve (2) and a connecting pipe (3), characterized in that: The lower end of the driving end (1) and the upper end of the ball valve (2) are fixedly connected with connecting plates (4), the connecting plates (4) are fixedly connected through screw rods, supporting plates (5) are fixed between the connecting plates (4), the supporting plates (5) are located at the middle positions of the connecting plates (4), threaded cylinders (7) are fixed to the middle sides of the supporting plates (5), the four corners of the connecting plates (4) are provided with protective supporting mechanisms and are correspondingly connected with the threaded cylinders (7).

2. The automatic pressure relief valve according to claim 1, wherein: The protective supporting mechanism comprises protective supporting plates (8), the protective supporting plates (8) are arranged at the four corners of the two connecting plates (4), and the outer sides of the protective supporting plates (8) are provided with screws (9) which are screwed with the threaded cylinders (7) through the protective supporting plates (8).

3. The automatic pressure relief shut-off valve for a gas station according to claim 2, wherein: Sealing strips (11) are fixedly connected to the connecting portions of the protective supporting plates (8), and the two sealing strips (11) are arranged to abut against each other.

4. The automatic pressure relief shut-off valve for a gas station according to claim 3, wherein: Sealing plates (10) are fixedly connected to the upper and lower ends of the protective supporting plates (8), and the sealing plates (10) are arranged to abut against the upper and lower ends of the inner sides of the connecting plates (4).

5. The automatic pressure relief shut-off valve for a gas station according to claim 2, wherein: Reinforcing ribs (6) are fixed to the upper and lower sides of the supporting plates (5), one end of each reinforcing rib (6) is fixedly connected with the side face of the supporting plate (5), and the other end is fixedly connected with the end face of the connecting plate (4).

6. The automatic pressure relief shut-off valve for a gas station according to claim 2, wherein: The driving end (1) is an electric driving device or a pneumatic driving device.

7. The automatic pressure relief shut-off valve for a gas station according to claim 2, wherein: The ball valve (2) is a floating ball valve or a fixed ball valve.

8. The automatic pressure relief shut-off valve for a gas station according to claim 2, wherein: The connecting pipe (3) is a flange connection or a threaded connection.

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