CN216813062U

CN216813062U - Tank car safety valve and protective cover applied to same

Info

Publication number: CN216813062U
Application number: CN202220544128.4U
Authority: CN
Inventors: 陈华凯; 陈华生; 陈春莲; 陈春兰; 陈永光; 黄文红; 徐顺恋
Original assignee: FUJIAN ZHONGSHI SPECICAL VALVE MANUFACTURING CO LTD
Current assignee: FUJIAN ZHONGSHI SPECICAL VALVE MANUFACTURING CO LTD
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-06-24
Anticipated expiration: 2032-03-14

Abstract

The utility model relates to a tank car safety valve and a protective cover applied to the same. The cover body is provided with a discharge port which is a hole/groove structure communicating the inside and the outside of the cover body. The discharge port is provided at an opening of an outer edge of the cap body facing a side and/or a lower side of the cap body. The discharge port is additionally provided with a blocking cavity which is of an upwardly extending cavity structure, and the extending direction of the upward extending blocking cavity is the extending direction of the opening of the discharge port, which is positioned on the outer edge of the cover body, towards the opening of the discharge port, which is positioned on the inner edge of the cover body. Liquid such as rainwater and the like outside the protective cover is not easy to enter the discharge port, and even a small amount of liquid enters the protective cover, the liquid is blocked by the blocking cavity and is not easy to enter the protective cover, so that the problems that a safety valve of the tank car is easy to damage, potential safety hazards exist and the like are solved.

Description

Tank car safety valve and protective cover applied to same

Technical Field

The utility model relates to the field of safety valves, in particular to a tank car safety valve and a protective cover applied to the tank car safety valve.

Background

In the field of tank car safety valves, particularly in the field of built-in tank car safety valves, structures of the tank car safety valves, which are located above the top surface of a tank body of a tank car, are often matched with a protective cover structure to cover structures such as a valve clack inside the tank car safety valves. When the tank car safety valve is opened, the medium flowing out from the space between the valve body and the valve clack needs to be discharged out of the protective cover, and a discharge port is generally required to be arranged on the top surface of the protective cover. In the earliest safety valve structure of the tank car, a discharge port of a protective cover is directly exposed, rainwater and the like enter the protective cover from the discharge port to soak structures such as a valve clack, a bolt and the like in the protective cover in the use process of the tank car and then are mixed with chemicals which are remained in the protective cover and applied to various tank cars, the environment in the protective cover is severe, the corrosion and the damage of the structures such as the bolt, the valve clack and the like are easily caused, the service life of the safety valve of the tank car is shortened, and potential safety hazards exist.

Referring to fig. 1, a tank car safety valve sold by the applicant, a flange member 1 of a valve body is used for being connected with a tank body of a tank car, a protective cover 2 is connected to the flange member 1 through screws, a plurality of discharge ports 3 are formed in the top surface of the protective cover 3, and a valve clack 4 of the tank car safety valve is located in the protective cover 2. The top surface of the protective cover 2 is also provided with a fixing forbidding bolt 5, the fixing forbidding bolt 5 is in threaded connection with the top surface of the protective cover 2, for example, when the spring 6 is broken, the tank car tank body is subjected to pressure test and the like, the fixing forbidding bolt 5 can be rotated to enable the fixing forbidding bolt to move towards the valve clack 4 to fix the valve clack 4, so that the tank car safety valve is in a closed state. In order to solve the problems of the tank car safety valve, the applicant arranges a sealing sleeve 7 on the protective cover 2, the sealing sleeve 7 can be made of plastic, silicon rubber and the like, the sealing sleeve is sleeved on the top surface of the protective cover 2 in a clamping mode, and the sealing sleeve 7 is clamped on the top surface of the protective cover 2 to further seal the discharge port 3. When the safety valve of the tank car is opened in case of danger and the like, the medium rushing out of the safety valve of the tank car can also rush out the clamping structure of the sealing sleeve 7, and the use of the safety valve of the tank car cannot be influenced. In order to avoid the loss of the closing sleeve 7, the closing sleeve 7 is also connected to the protective cover 2 by a metal chain. The applicant previously filed a related structure disclosed in chinese utility model patent No. CN204239836U, but the geometry and the assembly position of the protective cover 2 disclosed in this patent are slightly different from those of the tank car safety valve shown in fig. 1. The sealing sleeve 7 of the scheme is used, when the conditions such as wind blowing, vibration and the like of tank car running environmental factors or damage of the sealing sleeve 7, experimental maintenance of the tank car, pressure relief of a safety valve of the tank car and the like are met, the sealing sleeve 7 is separated from the clamping structure to expose the discharge port 3, a plurality of drivers of the tank car often do not pay attention or even pay attention to the sealing sleeve 7, the sealing sleeve 7 is not clamped to the top surface of the protective cover 2, the sealing sleeve 7 is further enabled to lose due effect, and the safety valve of the tank car still has the problems.

Disclosure of Invention

The utility model provides a tank car safety valve and a protective cover applied to the same, and aims to solve the problems that the tank car safety valve is easy to damage and the like.

The utility model adopts the following technical scheme:

the protective cover for the tank car safety valve comprises a cover main body, wherein the lower end of the cover main body is open, and the lower end of the cover main body is connected with a valve body of the tank car safety valve. The cover body is provided with a discharge port which is a hole/groove structure communicating the inside and the outside of the cover body. The opening of the discharge port located on the outer edge of the cover main body is arranged towards the side and/or the lower part of the cover main body. The discharge port is additionally provided with a blocking cavity, the blocking cavity is of an upwardly extending cavity structure, and the extending direction of the upward extending blocking cavity is the extending direction of the opening of the discharge port, which is positioned on the outer edge of the cover main body, in the discharge port, towards the opening of the discharge port, which is positioned on the inner edge of the cover main body.

Further:

the assembly hole has been seted up to above-mentioned lid main part, and the assembly hole is for seting up the through-hole structure in lid main part top surface, and the assembly hole is used for assembling the forbidden solid bolt of tank car relief valve.

The cover body and the discharge port attached to the cover body include the following two setting modes:

the cover comprises a cover body, a connector and a connecting edge, wherein the connector is arranged in a circular ring shape, the cover body is arranged at a lower opening, the connector is arranged at an upper end of the cover body, the cover body is sleeved outside the upper end of the connector, an annular space cavity is formed between the lower opening of the cover body and the peripheral edge of the circular ring structure of the connector, and the connecting edge is connected with the cover body and the connector. The discharge port is disposed in the annular space cavity. The assembly hole is arranged on the top surface of the top cover body. The connecting body is used for being connected with a valve body of the tank car safety valve.

The assembly hole is arranged in the middle of the top surface of the top cover body. The connecting edge extends upwards to the position of the assembling hole along the inner edge of the top cover body.

A plurality of mounting holes are formed in the connecting body, the mounting holes are formed in the periphery edge of the connecting body and penetrate through the connecting body, and the mounting holes are used for assembling the connecting body and the valve body.

Secondly, the side wall of the cover main body is provided with a discharge hole which is a through hole structure penetrating through the side wall of the cover main body. The cover body is additionally provided with a discharge baffle which is arranged in an annular structure, the top surface of the discharge baffle is connected with the outer periphery of the cover body and is arranged above the discharge hole, and the side surface of the discharge baffle is sleeved outside the cover body and the lower end of the discharge baffle extends to the lower part of the discharge hole. The discharge port extends from a spaced area between the discharge baffle and the cap body to the discharge hole.

A plurality of mounting holes are formed in the side wall of the cover body, the mounting holes are arranged at the position close to the lower opening of the cover body, the mounting holes penetrate through the side wall of the cover body and extend into the lower opening of the cover body, and the mounting holes are used for assembling the cover body and the valve body.

And each mounting hole is internally provided with a mounting screw which can detachably assemble the connecting body on the valve body.

The mounting screw is locked on the circumferential side edge of the flange component of the valve body, which is used for being connected with the tank body of the tank car, or is locked above the flange component of the valve body, which is used for being connected with the tank body of the tank car.

A tank car safety valve comprises a valve body, a valve clack and the protective cover, wherein the valve body is additionally provided with a flange component, the flange component is positioned at the upper end of the valve body, the valve body is assembled on the top surface of a tank car body through the flange component, the flange component is positioned on the tank car body, the valve clack is arranged on a through hole in the middle of the flange component, and the protective cover is sleeved outside the valve clack.

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

according to the utility model, the discharge port is positioned at the opening at the outer edge of the cover main body and faces the side and/or the lower part of the cover main body, and then the blocking cavity which extends upwards from the outside to the inside is added into the discharge port, so that rainwater and other liquid outside the protective cover are not easy to enter the discharge port, and even a small amount of rainwater enters the protective cover, the rainwater and other liquid are blocked by the blocking cavity and are not easy to enter the protective cover, so that the problems that the structures such as a valve clack, a bolt and the like of the tank car safety valve in the protective cover are soaked by rainwater and even sewage formed by mixing dust and compounds with rainwater are reduced and even avoided, and the problems that the tank car safety valve is easy to damage and has potential safety hazards and the like caused by soaking corrosion are further reduced and even avoided.

And the discharge port is communicated with the inside and the outside of the protective cover, so that the medium flowing out when the safety valve of the tank car is opened is not influenced. Moreover, the discharge port relies on self structure to realize above-mentioned function, need not to rely on structures such as enclosing the cover, and convenient to use just is difficult to become invalid, and the effect is more stable.

Drawings

Fig. 1 is a schematic view of a safety valve of a prior art tank car.

Fig. 2 is a schematic structural diagram of a protective cover according to a first embodiment of the utility model.

Fig. 3 is a schematic half-sectional view of a protective cover according to a first embodiment of the utility model.

Fig. 4 is a schematic structural diagram of a safety valve of a tank car according to a first embodiment of the present invention.

Fig. 5 is a schematic half-sectional view of the protective cover according to the second embodiment of the present invention.

Detailed Description

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

Example one

Referring to fig. 2 and 4, the tank car safety valve comprises a valve body 1, a valve clack, a protective cover and a fixing bolt 3, wherein a flange member is attached to the valve body 1 and is located at the upper end of the valve body 1, the valve body 1 is assembled on the top surface of a tank body of a tank car through the flange member, the flange member is located on the tank body of the tank car, the valve clack is arranged on a through hole in the middle of the flange member, the protective cover is sleeved outside the valve clack, the fixing bolt 3 is assembled on the top surface of the protective cover, and the lower end of the fixing bolt 3 faces the top surface of the valve clack. The protective cover comprises a cover main body, wherein the lower end of the cover main body is arranged in an opening mode, and the lower end of the cover main body is connected with the valve body 1. The cap body is provided with a discharge port 21, and the discharge port 21 has a hole/groove structure for communicating the inside and outside of the cap body. The discharge port 21 is provided at an opening of the outer edge of the cap body so as to face a side and/or a lower side of the cap body. The discharge port 21 is additionally provided with a blocking cavity which is an upwardly extending cavity structure, and the extending direction of the upward extending blocking cavity is the extending direction of the opening in the discharge port 21 from the discharge port 21 at the outer edge of the cover body to the opening at the discharge port 21 at the inner edge of the cover body. The utility model relates to an improvement of a protective cover, and other specific structures of the safety valve of a tank car can be realized by referring to the structure of the conventional safety valve of the tank car and related to the background technology, and the details are not repeated. The structure of the safety valve of the prior tank car at the assembly position of the protective cover comprises two structures as shown in fig. 1 and disclosed in the patent document with the publication number of CN204239836U, and the application range of the protective cover structure of the present embodiment includes, but is not limited to, the two structures.

Referring to fig. 3 and 4, the cover main body includes a top cover body 201, a connector 202 and a plurality of connecting ribs 203, the connector 202 is disposed in a circular ring shape, the top cover body 201 is disposed in a lower opening structure, the connector 202 is disposed at a lower opening of the top cover body 201, the top cover body 201 is sleeved outside the upper end of the connector 202, an annular space cavity is formed between the lower opening inner edge of the top cover body 201 and the outer circumferential edge of the circular ring structure of the connector 202, the connecting ribs 203 are connected with the top cover body 201 and the connector 202, the discharge port 21 is disposed in the annular space cavity, that is, the annular space cavity is divided into a plurality of discharge ports 21 in a groove structure by the connecting ribs 203, and a section of space extending upwards from the outside of the cover main body to the inside of the discharge port 21 is the blocking cavity. An assembly hole 22 is opened at the middle part of the top surface of the top cover body 201, the assembly hole 22 is a through hole structure opened on the top surface of the cover body, and the fastening bolt 3 and the assembly hole 22 are assembled in the assembly hole 22 in a threaded connection manner. The connecting body 202 is used for connecting with the valve body 1.

With reference to fig. 3 and 4, in detail, the connecting body 202 is sleeved outside the circumferential edge of the flange member, the connecting body 202 is provided with a plurality of mounting holes 23, and the mounting holes 23 are formed on the outer circumferential edge of the connecting body 202 and penetrate through the connecting body 202. Each of the mounting holes 23 is provided with a mounting screw 231, and the end of the mounting screw 231 abuts against the circumferential side edge of the flange member after the mounting screw 231 is locked into the connecting body 202, so that the protective cover is assembled. The connecting rib 203 extends upward along the inner edge of the top cover body 201 to the position of the mounting hole 22. Usually, the whole protective cover can be produced by casting, and the structure of the connecting rib 203 extending to the assembly hole 22 can enhance the structural strength of the protective cover between the connecting body 202 and the assembly hole 22, so as to avoid the influence on the safety valve function of the tank car due to the damage of the protective cover when the fixing bolt 3 is forbidden to work.

Example two

Referring to fig. 5, a protective cover for a tank car safety valve includes a cover main body 20, a lower end of the cover main body 20 is open, and the lower end of the cover main body 20 is connected with a valve body of the tank car safety valve. The cover main body 20 is provided with a discharge port 21 and an assembly hole 22, the discharge port 21 is a hole/groove structure communicating the inside and the outside of the cover main body 20, the assembly hole 22 is a through hole structure opened on the top surface of the cover main body 20, and the assembly hole 22 is used for assembling a fixing prohibition bolt of a tank car safety valve. The discharge port 21 is provided at an opening of the outer edge of the cap body 20 so as to face the side and/or lower side of the cap body 20. The discharge port 21 is attached with a blocking chamber, which is an upwardly extending chamber structure, and the extending direction of the upward extending blocking chamber is the extending direction of the opening in the discharge port 21 from the discharge port 21 located at the outer edge of the cap body 20 toward the opening of the discharge port 21 located at the inner edge of the cap body 20.

With reference to fig. 5, the sidewall of the cover body 20 is opened with a discharge hole 211, and the discharge hole 211 is a through hole structure penetrating through the sidewall of the cover body 20. The cover body 20 is provided with a discharge baffle 212, the discharge baffle 212 is arranged in an annular structure, the top surface of the discharge baffle 212 is connected with the outer periphery of the cover body 20 and is arranged above the discharge hole 211, the side surface of the discharge baffle 212 is sleeved outside the cover body 20, and the lower end of the discharge baffle 212 extends to the lower part of the discharge hole 211. The discharge port 21 extends from a spaced area between the discharge baffle 212 and the cover main body 20 to the discharge hole 211. That is, the drain baffle 212 is a baffle structure that covers the drain hole 211 to prevent rainwater or the like from directly blowing into the drain hole 211. The space outside the discharge baffle 212 and the side of the cap body 20 is the blocking chamber. The side wall of the cover body 20 is provided with a plurality of mounting holes 23, the mounting holes 23 are arranged near the opening of the lower opening of the cover body 20, the mounting holes 23 penetrate through the side wall of the cover body 20 and extend into the opening of the lower opening of the cover body 20, and the mounting holes 23 are used for assembling the cover body 20 and the valve body. Specifically, the central portion of the flange member of the valve body disclosed in patent document No. CN204239836U is slightly thickened to form a boss structure on the top surface thereof. Each of the mounting holes 23 is provided with a mounting screw, and the end of the mounting screw is abutted against the circumferential side edge of the boss structure on the top surface of the flange member after the mounting screw is locked into the connecting body 202, so that the protective cover is assembled.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims

1. A protective cover for a tank car safety valve comprises a cover main body, wherein the lower end of the cover main body is arranged in an open manner, and is connected with a valve body of the tank car safety valve; the cover main body is provided with a discharge port which is a hole/groove structure communicating the inside and the outside of the cover main body; the method is characterized in that: the opening of the discharge port positioned on the outer edge of the cover main body faces the side and/or the lower part of the cover main body; the discharge port is additionally provided with a blocking cavity which is of an upwardly extending cavity structure, and the extending direction of the upward extending blocking cavity is the extending direction of the opening of the discharge port, which is positioned on the outer edge of the cover body, towards the opening of the discharge port, which is positioned on the inner edge of the cover body.

2. The protective cover for a tank car safety valve according to claim 1, wherein: the cover main part has been seted up the pilot hole, and the pilot hole is for seting up the through-hole structure in cover main part top surface, and the pilot hole is used for assembling the forbidden solid bolt of tank car relief valve.

3. A protective cover for a tank car safety valve according to claim 2, wherein: the cover main body comprises a top cover body, a connecting body and a connecting edge, the connecting body is arranged in a circular ring shape, the top cover body is arranged in a lower opening structure, the connecting body is arranged at an opening of the lower opening of the top cover body, the top cover body is sleeved outside the upper end of the connecting body, an annular space cavity is formed between the inner edge of the lower opening of the top cover body and the peripheral edge of the circular ring structure of the connecting body, and the connecting edge is connected with the top cover body and the connecting body; the discharge port is arranged in the annular spacing cavity; the assembly hole is formed in the top surface of the top cover body; the connecting body is used for being connected with a valve body of the tank car safety valve.

4. A protective cover for a tank car safety valve according to claim 3, wherein: the assembling hole is formed in the middle of the top surface of the top cover body; the connecting edge extends upwards to the position of the assembling hole along the inner edge of the top cover body.

5. A protective cover for a tank car safety valve according to claim 3, wherein: the connector has been seted up the several mounting hole, and the mounting hole is seted up and is followed and run through the connector setting in the connector periphery, the mounting hole be used for the connector with assembly between the valve body.

6. The protective cover for a tank car safety valve according to claim 1, wherein: the side wall of the cover main body is provided with a discharge hole which is a through hole structure penetrating through the side wall of the cover main body; the cover body is additionally provided with a discharge baffle which is arranged in an annular structure, the top surface of the discharge baffle is connected with the outer periphery of the cover body and is arranged above the discharge hole, the side surface of the discharge baffle is sleeved outside the cover body, and the lower end of the discharge baffle extends to the lower part of the discharge hole; the discharge port extends to the discharge hole from a spaced area between the discharge baffle and the cap body.

7. The protective cover for a tank car safety valve according to claim 6, wherein: the side wall of the cover body is provided with a plurality of mounting holes, the mounting holes are arranged near the opening of the lower opening of the cover body, the mounting holes penetrate through the side wall of the cover body and extend into the lower opening of the cover body, and the mounting holes are used for assembling the cover body and the valve body.

8. A protective cover for a tank car safety valve according to claim 5 or 7, wherein: and each mounting hole is internally provided with a mounting screw, and the mounting screw detachably assembles the connecting body to the valve body.

9. The protective cover for a tank car safety valve according to claim 8, wherein: the mounting screws are fixedly locked on the circumferential side edge of the flange component of the valve body, which is used for being connected with the tank car body, or above the flange component of the valve body, which is used for being connected with the tank car body.

10. A tank car safety valve comprises a valve body, a valve clack and a protective cover, wherein the valve body is attached with a flange component, the flange component is positioned at the upper end of the valve body, the valve body is assembled on the top surface of a tank car body through the flange component, the flange component is positioned on the tank car body, the valve clack is arranged on a middle through hole of the flange component, and the protective cover is sleeved outside the valve clack; the method is characterized in that: the protective cover is a protective cover for a safety valve of a tank car according to any one of claims 1 to 7.