CN210566481U

CN210566481U - Emergency cut-off valve for tank car

Info

Publication number: CN210566481U
Application number: CN201921754106.5U
Authority: CN
Inventors: 陈华凯; 陈华生; 陈其龙
Original assignee: FUJIAN ZHONGSHI SPECICAL VALVE MANUFACTURING CO LTD
Current assignee: FUJIAN ZHONGSHI SPECICAL VALVE MANUFACTURING CO LTD
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-05-19
Anticipated expiration: 2029-10-18

Abstract

The utility model relates to an emergency cut-off valve for tank wagon, including valve body, valve rod, valve clack, valve handle, cylinder, support and control box, be equipped with a medium channel in the valve body, valve rod and valve clack assemble in the valve body, but the valve handle head end dead axle assembles outside the valve body with rotating, and the valve handle removes through driving the valve rod and seals or open the medium channel setting with being used for the control valve clack. The head end of the support is arranged on the valve body, and the cylinder can push the valve handle fixed shaft to be rotatably assembled between the tail end of the valve handle and the tail end of the support. The cylinder is attached with one or two connecting air pipes, and the connecting air pipes are connected with the cylinder and the control box. The control box is additionally provided with an air source pipe, the air source pipe is communicated with an air storage tank of the tank car, and the control box is used for controlling the pushing end of the air cylinder to push out or retract. The utility model discloses a cylinder control valve handle work, the air reservoir of tank wagon is taken from to the air supply of the control box of cylinder, and the structure is scientific and reasonable more.

Description

Emergency cut-off valve for tank car

Technical Field

The utility model relates to a valve for tank wagon (tank car), concretely relates to emergency cut-off valve for tank wagon.

Background

The emergency cut-off valve for vehicle is a safety protection valve, and is a quick cut-off valve installed on the main gas-liquid phase interface of tank car and storage tank, and can be quickly cut off on site and at a certain distance by means of hydraulic and pneumatic machinery. The emergency cut-off is that when the transported medium is in the course of transportation, loading and unloading, it can produce fire, pipeline break, turnover and stop valve failure, etc. accident, said valve can be automatically or manually quickly cut off, and it is one of the necessary safety accessories for pressure container storage and transportation equipment.

Many conventional quick action valves are opened and closed manually or hydraulically, and include an automatically controllable quick action valve disclosed in patent No. 200720185323.8 and a quick action valve for vehicles disclosed in patent No. 201420335015.9 previously filed by the present applicant. In the scheme, the manual control is needed by a user in the using process, the use is inconvenient, and the setting position of the emergency cut-off valve is small, so that the inconvenience is further brought to the user; in the scheme, the structure of the automatic control is complex, a matched oil pressure supply structure is needed, and the oil pressure structure is damaged and the like, so that the maintenance is inconvenient.

And the emergency cut-off valve for the tank wagon for transporting liquid ammonia, liquefied gas and the like is divided into a liquid phase valve (the emergency cut-off valve for liquid phase transport media) and a gas phase valve (the emergency cut-off valve for gas phase transport media) according to national standards, the caliber of a medium channel of the liquid phase valve at the medium outflow end of the valve body is 50mm, and the caliber of a medium channel of the gas phase valve at the medium outflow end of the valve body is 25 mm.

Disclosure of Invention

The utility model provides an emergency cut-off valve for tank wagon to solve above-mentioned problem.

The utility model adopts the following technical scheme:

the utility model provides an emergency cut-off valve for tank wagon, includes valve body, valve rod, valve clack, valve handle, cylinder, support and control box, is equipped with a medium passageway in the valve body, and valve rod and valve clack assemble in the valve body, but the valve handle head end dead axle assembles outside the valve body with rotating, and the valve handle is through driving the valve rod removal in order to be used for control valve clack to seal or open the medium passageway setting. The head end of the support is arranged on the valve body, and the cylinder can push the valve handle fixed shaft to be rotatably assembled between the tail end of the valve handle and the tail end of the support. The cylinder is attached with one or two connecting air pipes, and the connecting air pipes are connected with the cylinder and the control box. The control box is additionally provided with an air source pipe, the air source pipe is communicated with an air storage tank of the tank car, and the control box is used for controlling the pushing end of the air cylinder to push out or retract.

Further:

the valve body comprises a valve body main body and an overflowing protective cover, wherein the overflowing protective cover is arranged at the end part of the head end of the valve body main body, and the head end of the valve body main body is the end, in which the valve body main body is positioned, of the medium flowing in. Above-mentioned valve clack is for overflowing the valve clack, and outside above-mentioned valve body main part head end was located to the valve clack, the valve rod tail end was located one side that the valve clack deviates from the valve body main part, and the valve rod head end runs through and extends behind the valve clack and set up in the valve body main part, and the valve clack all is located in the above-mentioned guard shield that overflows with the valve rod tail end, and the valve clack is used for receiving the valve rod pulling to follow after medium inflow direction removes.

The valve body is provided with a valve rod head end, the valve rod head end is provided with a valve rod main body, the valve rod main body is provided with a valve rod head end, the valve rod head end is provided with a connecting shaft and a swing arm, the connecting shaft and the valve rod head end are assembled at the end part of the valve rod head end in a synchronous rotating mode, the connecting shaft penetrates through the side wall of the valve body main body and extends into the medium channel, the swing arm is arranged in the medium channel, the swing arm head end is fixedly arranged on.

And a return spring is arranged between one side of the tail end of the valve rod, which deviates from the valve clack, and the inner edge of the overflowing protective cover.

The valve rod is sleeved with an auxiliary spring, and the auxiliary spring is arranged between one side of the valve clack facing the valve body and the valve body.

The control box is additionally provided with a control button and an automatic control module, and the control button and the automatic control module are respectively used for manually or automatically controlling the pushing-out end of the air cylinder to be pushed out or retracted. The information acquisition channel of the automatic control module is at least one of a wheel speed sensor arranged on a wheel of the tank car, a tank car driving computer and tank car positioning information. The power supply of the control box is connected with a storage battery of the tank car.

The support is composed of a main frame body and an extension part, the head end of the main frame body is arranged outside the valve body, and the extension part and the main frame body are integrally formed at the tail end of the main frame body. The fixed end of the cylinder is assembled at the tail end of the extension part, and the push-out end of the cylinder is assembled at the tail end of the valve handle.

The emergency cut-off valve for the tank car comprises a liquid phase valve and a gas phase valve, wherein the caliber of the medium channel of the liquid phase valve positioned at the medium outflow end of the valve body is 50mm, and the caliber of the medium channel of the gas phase valve positioned at the medium outflow end of the valve body is 25 mm. The valve handle for the liquid phase valve is the same as the valve handle for the gas phase valve, the main frame body for the liquid phase valve is the same as the main frame body for the gas phase valve, the included angle between the extension part for the liquid phase valve and the extension part for the gas phase valve and the main frame body applied respectively is the same, and the length of the extension part for the liquid phase valve is larger than that of the extension part for the gas phase valve.

The air cylinder is a single-piston double-acting air cylinder, the air cylinder is additionally provided with two connecting air pipes, and the two connecting air pipes are respectively connected with a rod cavity and a rodless cavity of the air cylinder. The outer edge of the cylinder body of the cylinder is provided with a high-temperature cutting hole, the high-temperature cutting hole extends to be communicated with the rodless cavity, and the high-temperature cutting hole is sealed by an fusible plug. The melting temperature of the fusible plug is 75 +/-5 ℃.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

first, the utility model discloses a cylinder control valve handle work, the air reservoir of tank wagon is taken from to the air supply of the control box of cylinder, and structure scientific and reasonable more compares in the oil pressure scheme, has saved special oil pressure supply structure to outside the valve body was directly located through the support to the cylinder, the structure was also more simple and clear, and the emergency cut-off valve in the use, when needing to maintain, repair, part maintenance was changed also convenient and fast more. And in practical application, because the locomotive of tank wagon generally has special air feed power supply interface for supply jar body place carriage to use, consequently the utility model discloses an emergency cut-off valve in practical application, only need with air supply, the power of control box respectively through special interface insert above-mentioned air feed power supply interface can, change for a short time to the tank wagon, the emergency cut-off valve is used more conveniently, and the application cost is littleer.

Second, the utility model discloses a quick action emergency valve for tank wagon for transportation such as liquid ammonia, liquefied gas on the product of two kinds of gaseous phase quick action emergency valve (gaseous phase valve) and liquid phase quick action emergency valve (liquid phase valve), the valve rod can be general, saves the producer and produces the part type that two kinds of type quick action emergency valves need prepare, saves the manufacturing cost of product. Just the utility model discloses a difference of quick emergency valve of emergency cut-off valve's supporting structure is using to gas phase valve and two kinds of types of liquid phase valve only lies in the extension length of extension, and the production mould of support can be realized through the different expansion modules of one set of mould cooperation promptly, has further saved the manufacturing cost of product.

Drawings

Fig. 1 is a schematic structural view of an emergency cut-off valve according to the first embodiment of the present invention.

Fig. 2 is a schematic sectional view of the first embodiment of the quick action emergency valve of the present invention.

Fig. 3 is a schematic structural view of a bracket according to the first embodiment of the present invention.

Fig. 4 is a schematic structural view of the emergency cut-off valve of the present invention in the second embodiment.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The first embodiment is as follows:

referring to fig. 1 and 2, the emergency cut-off valve for the tanker comprises a valve body 1, a valve rod 2, a valve clack 3, a valve handle 4, a cylinder 5, a support 6 and a control box 7, wherein a medium channel 10 is arranged in the valve body 1, the valve rod 2 and the valve clack 3 are assembled in the valve body 1, the head end of the valve handle 4 can be assembled outside the valve body 1 in a fixed-axis rotating manner, and the valve handle 4 is arranged by driving the valve rod 2 to move so as to control the valve clack 3 to close or open the medium channel 10. The head end of the support 6 is arranged on the valve body 1, and the air cylinder 5 can push the valve handle 4 to be assembled between the tail end of the valve handle 4 and the tail end of the support 6 in a fixed-shaft rotating manner. The emergency cut-off valve for tank cars of the present embodiment is used for an emergency cut-off valve (for convenience of description, simply referred to as a liquid phase valve in the present application) for transporting liquid ammonia or liquefied gas in a liquid phase, and the diameter of the medium passage 10 at the medium outflow end of the valve body 1 is 50 mm. The control box 7 is additionally provided with an air source pipe 71, the air source pipe 71 is communicated with an air storage tank of the tank car, and the control box 7 is used for controlling the push-out end of the air cylinder 5 to be pushed out or retracted. The power supply of the control box 7 is connected with a storage battery of the tank car.

Referring to fig. 1, 2 and 3, the structure that the cylinder 5 pushes the valve handle 4 to rotate may be selected by a person skilled in the art according to actual needs, and in this embodiment, in order to achieve the same effect as that of the valve rod 2 and the bracket 6 in the emergency shut-off valve in the second embodiment or that the valve rod and the bracket 6 can share one mold for production, it is preferable to adopt: the support 6 is composed of a main frame 61 and an extension part 62, the head end of the main frame 61 is arranged outside the valve body 1, the extension part 62 and the main frame 61 are integrally formed at the tail end of the main frame 61, and the included angle between the main frame 61 and the extension part 62 is 35 °. The fixed end of the cylinder 5 is fitted to the rear end of the extension 62, and the push-out end of the cylinder 5 is fitted to the rear end of the valve handle 4. Specifically, the air cylinder 5 is a single-piston double-acting air cylinder 5, the air cylinder 5 is additionally provided with two connecting air pipes 51, one ends of the two connecting air pipes 51 are respectively connected with a rod cavity and a rodless cavity of the air cylinder 5, and the other ends of the two connecting air pipes 51 are connected to the control box 7. The outer edge of the cylinder body of the cylinder 5 is provided with a high-temperature cutting hole, the high-temperature cutting hole extends to be communicated with the rodless cavity, and the high-temperature cutting hole is sealed by an fusible plug 52. The fusible plug 52 has a melting temperature of 75 ℃. + -. 5 ℃.

Referring to fig. 1 and 2, the valve body 1 includes a valve body main body 11 and an overflow shield 12, the overflow shield 12 is disposed at a head end of the valve body main body 11, and the head end of the valve body main body 11 is an end of the valve body main body 11 at which a medium flows in. The circumferential side edge of the overflowing shield 12 is provided with a plurality of through holes for medium to flow into the medium channel 10. Above-mentioned valve clack 3 is for overflowing valve clack 3, and outside 11 head ends of above-mentioned valve body main part were located to valve clack 3, and one side that valve clack 3 deviates from valve body main part 11 was located to 2 tail ends of valve rod, and 2 head ends of valve rod run through and set up in extending valve body main part 11 behind the valve clack 3, and in valve clack 3 and the above-mentioned guard shield 12 that overflows was all located to the aforesaid with 2 tail ends of valve rod, valve clack 3 was used for following the medium with 2 stimulations of valve rod and flows the direction and remove the. The head end of the valve handle 4 is additionally provided with a connecting shaft 41 and a swing arm 42, the connecting shaft 41 and the valve handle 4 are assembled at the head end of the valve handle 4 in a synchronous rotating manner, the connecting shaft 41 penetrates through the side wall of the valve body main body 11 and extends into the medium channel 10, the swing arm 42 is arranged in the medium channel 10, the head end of the swing arm 42 is fixedly arranged at the circumferential side edge of the connecting shaft 41, and the tail end of the swing arm 42 is arranged adjacent to the head end face of the valve rod 2 through a swing arm wheel 421. A return spring 31 is arranged between one side of the tail end of the valve rod 2 departing from the valve clack 3 and the inner edge of the overflowing protective cover 12. An auxiliary spring 32 is provided around the valve rod 2, and the auxiliary spring 32 is provided between the valve body 11 and a side of the valve flap 3 facing the valve body 11.

Referring to fig. 1, 2 and 3, the control box 7 is additionally provided with a control button 72 and an automatic control module, and the control button 72 and the automatic control module are respectively used for manually or automatically controlling the pushing-out end of the air cylinder 5 to be pushed out or retracted. The information acquisition channel of the automatic control module is at least one of a wheel speed sensor arranged on a wheel of the tank car, a tank car driving computer and tank car positioning information. The information acquisition channel of the automatic control module can be selected according to the requirements of the emergency cut-off valve in practical application. If the tank car can be unloaded only at a specified position, the unloading can be realized by acquiring the positioning information of the tank car. And unloading the tank car if the speed of the tank car is less than the specified speed or the tank car is completely static, and the unloading can be realized by acquiring one or more links and judgments in tank car positioning information, wheel speed sensor information and tank car running computer information. The control box 7 controls the pushing end of the air cylinder 5 by controlling the on-off of an electromagnetic valve between the air pipe connection and the pipeline of the air source pipe 71, which belongs to the common technical means in the field, and the control of the automatic control module can be realized by selecting the common technical means after knowing the control mode.

With continued reference to fig. 1, 2, and 3, in the application process of the emergency cut-off valve of this embodiment, the control box 7 controls the cylinder 5 to push out the push-out end thereof, so as to drive the valve handle 4 to rotate around the straight fixed axis where the connecting shaft 41 is located, and thus drive the connecting shaft 41 to rotate together with the swing arm 42 at the side edge thereof. The swing arm 42 rotates to drive the swing arm wheel 421 to press the head end of the valve rod 2, so that the valve rod 2 moves towards the direction of the overflowing shield 12 by compressing the return spring 31. After the end face of the swing arm 42 is separated from the end face of the valve clack 3 and the pressure intensity at the two ends of the valve clack 3 is at a specified level, the valve clack 3 moves towards the position of the tail end of the valve rod 2 under the action of the auxiliary spring 32, so that the valve clack 3 is separated from the end face of the valve body 11 to open the medium channel 10. When unloading is finished or the medium channel 10 needs to be cut off in case of emergency, the air cylinder 5 is controlled to retract the push-out end thereof, the swing arm wheel 421 moves towards the initial position, and the valve rod 2 moves back under the action of the return spring 31, so that the valve clack 3 is driven to be in contact with the end face of the head end of the valve body main body 11 again to close the medium channel 10. In the emergency overflowing situation of accidental leakage of the unloading target position of the tank car, the valve clack 3 is subjected to the medium pressure which is larger than the elastic force of the auxiliary spring 32 to compress the auxiliary spring 32 to move, so that the medium channel 10 is cut off emergently. When a high-temperature accident occurs, such as a fire, when the temperature of the position of the emergency cutoff valve rises to the melting temperature of the fusible plug 52, the fusible plug 52 melts to open the high-temperature cutoff hole, the push-out end of the cylinder 5 lacks the acting force for maintaining the push-out due to the release of air in the rodless cavity, and the external force such as air pressure and the return spring 31 is withdrawn, so that the high-temperature emergency cutoff medium channel 10 is realized by referring to the above description.

Example two:

referring to fig. 4, wherein the control box 7 and the like in fig. 4 are identical to those in fig. 1, they are omitted. The quick action emergency valve of the present embodiment differs from the quick action emergency valve of the first embodiment in that:

first, the emergency cut-off valve for tank cars of the present embodiment is used for an emergency cut-off valve (for convenience of description, simply referred to as a gas phase valve in the present application) for transporting liquid ammonia or liquefied gas in a gas phase, and the diameter of the medium passage 10 at the medium outflow end of the valve body 1 is 25 mm. The change in the structure of the valve body 1 and the like due to the change in the diameter of the medium passage 10 is consistent with the conventional quick action emergency valve.

Secondly, the size of the cylinder 5 selected in the embodiment is smaller than that of the cylinder 5 selected in the embodiment.

Third, the extension distance of the extension 62 of the present embodiment is smaller than that of the extension 62 of the first embodiment, that is, the length of the extension 62 is smaller than that of the extension 62 of the first embodiment. This structure can be realized by removing a part of the modules in the mold for casting the bracket 6 at one time, and the modules are the modules which are matched with the structure of the embodiment and are used for increasing the length of the extension part 62.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. An emergency cut-off valve for a tank car comprises a valve body, a valve rod, a valve clack and a valve handle, wherein a medium channel is arranged in the valve body, the valve rod and the valve clack are assembled in the valve body, the head end of the valve handle can be assembled outside the valve body in a fixed-shaft rotating mode, and the valve handle drives the valve rod to move so as to control the valve clack to close or open the medium channel; the method is characterized in that: the valve body is provided with a valve handle fixed shaft, and the valve handle fixed shaft is arranged between the valve handle tail end and the support tail end; one or two connecting air pipes are attached to the air cylinder, and the connecting air pipes are connected with the air cylinder and arranged with the control box; the control box is additionally provided with an air source pipe, the air source pipe is communicated with an air storage tank of the tank car, and the control box is used for controlling the pushing end of the air cylinder to push out or retract.

2. The quick action emergency valve for a tank car according to claim 1, wherein: the valve body comprises a valve body main body and an overflowing protective cover, the overflowing protective cover is arranged at the end part of the head end of the valve body main body, and the head end of the valve body main body is the end, in which the medium flows, of the valve body main body; the valve clack is for overflowing the valve clack, and the valve clack is located outside the valve body main part head end, the valve rod tail end is located one side that the valve clack deviates from the valve body main part, and the valve rod head end runs through and extends behind the valve clack and set up in the valve body main part, and the valve clack all is located with the valve rod tail end in overflowing the guard shield.

3. The quick action emergency valve for a tank car according to claim 2, wherein: the valve body is characterized in that a connecting shaft and a swing arm are additionally arranged at the head end of the valve handle, the connecting shaft and the valve handle are assembled at the end part of the head end of the valve handle in a synchronous rotating mode, the connecting shaft penetrates through the side wall of the valve body and extends into the medium channel, the swing arm is arranged in the medium channel, the head end of the swing arm is fixedly arranged on the circumferential side edge of the connecting shaft, and the tail end of the swing arm is arranged in an abutting mode with the end face of the.

4. The quick action emergency valve for a tank car according to claim 2, wherein: and a return spring is arranged between one side of the tail end of the valve rod, which deviates from the valve clack, and the inner edge of the overflowing protective cover.

5. The quick action emergency valve for a tank car according to claim 4, wherein: the valve rod is sleeved with an auxiliary spring, and the auxiliary spring is arranged between one side of the valve clack facing the valve body main body and the valve body main body.

6. The quick action emergency valve for tank cars according to any one of claims 1 to 5, characterized in that: the control box is additionally provided with a control button and an automatic control module, and the control button and the automatic control module are respectively used for manually or automatically controlling the pushing-out end of the air cylinder to be pushed out or retracted; the information acquisition channel of the automatic control module is at least one of a wheel speed sensor arranged on a wheel of the tank car, a tank car driving computer and tank car positioning information; the power supply of the control box is connected with a storage battery of the tank car.

7. The quick action emergency valve for a tank car according to claim 1, wherein: the support is composed of a main frame body and an extension part, the head end of the main frame body is arranged outside the valve body, and the extension part and the main frame body are integrally formed at the tail end of the main frame body; the fixed end of the cylinder is assembled at the tail end of the extension part, and the push-out end of the cylinder is assembled at the tail end of the valve handle.

8. The quick action emergency valve for a tank car according to claim 7, wherein: the emergency cut-off valve for the tank car comprises a liquid phase valve and a gas phase valve, wherein the caliber of a medium channel of the liquid phase valve, which is positioned at the medium outflow end of the valve body, is 50mm, and the caliber of a medium channel of the gas phase valve, which is positioned at the medium outflow end of the valve body, is 25 mm; the valve handle for the liquid phase valve is the same as the valve handle for the gas phase valve, the main frame body for the liquid phase valve is the same as the main frame body for the gas phase valve, the included angle between the extension part for the liquid phase valve and the extension part for the gas phase valve and the respectively applied main frame body is the same, and the length of the extension part for the liquid phase valve is larger than that of the extension part for the gas phase valve.

9. The quick action emergency valve for a tank car according to claim 7, wherein: the air cylinder is a single-piston double-acting air cylinder, two connecting air pipes are additionally arranged on the air cylinder, and the two connecting air pipes are respectively connected with a rod cavity and a rodless cavity of the air cylinder; the outer edge of the cylinder body of the cylinder is provided with a high-temperature cutting hole, the high-temperature cutting hole extends to be communicated with the rodless cavity, and the high-temperature cutting hole is sealed by an fusible plug; the melting temperature of the fusible plug is 75 +/-5 ℃.