CN211553281U - Straight-through detection valve for safety valve verification and safety valve verification system - Google Patents
Straight-through detection valve for safety valve verification and safety valve verification system Download PDFInfo
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- CN211553281U CN211553281U CN202020400200.7U CN202020400200U CN211553281U CN 211553281 U CN211553281 U CN 211553281U CN 202020400200 U CN202020400200 U CN 202020400200U CN 211553281 U CN211553281 U CN 211553281U
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Abstract
The utility model discloses a relief valve check-up is with direct check valve and relief valve check-up system, direct check valve includes the valve body, connects many takeovers on the valve body, connects regulation pole, the case of setting in the valve body on the valve body, adjust the pole and link to each other with the case, adjust the pole through the drive, realize the logical between takeover, disconnected state is adjusted, the takeover is taken over including first takeover, second and third takeover, the intercommunication state between first takeover and second takeover is the normal open state, the third is taken over and is realized adjusting through the drive adjustment pole with the intercommunication state that first takeover or second were taken over. The safety valve verification system includes the in-line check valve. The design of this direct check valve is convenient for realize the popularization of relief valve on-line check-up, relief valve check-up system includes direct check valve can convenient realization relief valve check-up.
Description
Technical Field
The utility model relates to a relief valve check-up technical field especially relates to a relief valve check-up is with direct check valve and relief valve check-up system.
Background
The safety valve is used as a safety accessory on the pressure container and the pressure pipeline and is in a normally closed state, when the pressure of a medium in the pressure container or the pipeline is increased to exceed a specified value, the safety valve is opened, the medium is discharged to the outside of a pressure environment to prevent the pressure container or the pipeline from being damaged because the internal pressure of the pressure container or the pipeline exceeds a specified value, and normal process parameters are prevented from being damaged. When the medium pressure value is higher than the specified value, the safety valve can be automatically opened to discharge redundant medium to reduce the internal pressure, and when the internal pressure value is reduced to the specified value, the safety valve is automatically closed to stop the discharge.
The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety, equipment safety and system operation. The safety valve is used as an important accessory on special equipment and can be continuously used only by regular verification.
In the prior art, the safety valve online verification technology is applied more and more widely in a continuous operation use environment, a use environment with dangerous media and the like.
Further developing the safety valve online checking technology is a technical problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
To the online check-up technique of further development relief valve that above-mentioned provided, the technical problem that technical field technical staff waited to solve urgently, the utility model provides a relief valve check-up is with direct check-up valve and relief valve check-up system, this design of direct check-up valve is convenient for realize the popularization of online check-up of relief valve, relief valve check-up system includes direct check-up valve, realization relief valve check-up that can be convenient.
The utility model provides a pair of relief valve check-up is with direct check valve and relief valve check-up system solves the problem through following technical essential: the through detection valve comprises a valve body, a plurality of connecting pipes connected to the valve body, an adjusting rod connected to the valve body and a valve core arranged in the valve body, wherein the adjusting rod is connected with the valve core, the on-off state adjustment between the connecting pipes is realized by driving the adjusting rod, the connecting pipes comprise a first connecting pipe, a second connecting pipe and a third connecting pipe, the communication state between the first connecting pipe and the second connecting pipe is a normally-on state, and the communication state between the third connecting pipe and the first connecting pipe or the second connecting pipe is realized by driving the adjusting rod.
In order to realize the online verification of the safety valve, during the specific verification, the communication relation between the inlet end of the safety valve and a pressure container or a pipeline needs to be cut off for a short time, and the specific cutting-off measures can adopt modes of setting a cutting-off plate, setting a root valve and the like. The straight-through detection valve aims to provide a valve which is provided with a partition measure at the inlet end of a safety valve, and optimizes a safety valve checking system into convenience for carrying out safety valve on-line checking if a root valve is arranged.
Specifically, one of the first connecting pipe and the second connecting pipe is used for being connected with an inlet end of the safety valve, and the other connecting pipe is used for being connected with an outlet end of the root valve, so that during the normal work of the safety valve, the communication relation between the first connecting pipe and the second connecting pipe is in a normally open state, the third connecting pipe is disconnected from the first connecting pipe or the second connecting pipe by adjusting the adjusting rod, and the valve core of the safety valve is used as a pressure boundary component of a pressure container or a pressure pipeline at the moment, so that the safety valve has an overpressure protection function on the pressure environment; and under the condition that the safety valve needs to be checked on line, the root valve is closed, the third connecting pipe is communicated with the first connecting pipe or the second connecting pipe by adjusting the adjusting rod, and checking gas can be introduced into the inner side of the valve core of the safety valve through the third connecting pipe, so that the safety valve is checked on line.
As a person skilled in the art, the conduction relationship adjustment of the three connection pipes is actually only set to the conduction relationship adjustment of two fluid routes, for example, a duct connected to the third connection pipe on the valve body is regarded as a first fluid route, a duct connected to the first connection pipe and the second connection pipe on the valve body is regarded as a second fluid route, and a valve element connected to the adjustment rod is actually only required to realize the conduction relationship adjustment of the first fluid route and the second fluid route, and the specific adjustment form may adopt an opening and closing form based on a ball valve, an opening and closing form based on a gate valve, an opening and closing form based on a stop valve, and the like. Therefore, the driving mode of the adjusting rod can be that the adjusting rod rotates around the axis of the adjusting rod or the adjusting rod turns over according to the specific design.
The further technical scheme of the straight-through detection valve is as follows:
to achieve that the safety valve, the foot valve are mounted on a pair of opposite sides of the straight-through check valve, and the vibration and the like caused during the pressure relief of the safety valve are reduced, relative to the straight-through check valve, the method is characterized in that: the first connecting pipe and the second connecting pipe are arranged on different sides of the valve body, and the side where the first connecting pipe is located is opposite to the side where the second connecting pipe is located.
In order to ensure that the pressure relief passage is a straight passage as far as possible, the pressure relief passage is set as follows: the first connecting pipe and the second connecting pipe are coaxial. Specifically, since the first connection pipe and the second connection pipe are in a normally open relationship, it is preferable that a straight hole is provided in the valve body to connect the first connection pipe and the second connection pipe. Further, to facilitate operation of the in-line check valve, it is provided that: the first connecting pipe, the second connecting pipe, the third connecting pipe and the adjusting rod are respectively arranged on four different sides of the valve body.
After accomplishing the relief valve check-up, for conveniently releasing for the check-up gas, set up to: the valve body is characterized by further comprising a fourth connecting pipe connected to the valve body, the communication state of the fourth connecting pipe and the first connecting pipe or the second connecting pipe is adjusted through driving the adjusting rod, and at most one of the third connecting pipe and the fourth connecting pipe is communicated with the first connecting pipe or the second connecting pipe at any time. The scheme comprises the following three states: 1. the third connecting pipe and the fourth connecting pipe are disconnected with the first connecting pipe or the second connecting pipe, and the state is the normal working state of the safety valve; 2. the third connecting pipe is communicated with the first connecting pipe or the second connecting pipe, and the fourth connecting pipe is disconnected from the first connecting pipe or the second connecting pipe, wherein the state is a state of supplementing compressed gas for verification to the inner side of the valve core of the safety valve; 3. and the third connecting pipe is disconnected from the first connecting pipe or the second connecting pipe, and the fourth connecting pipe is communicated with the first connecting pipe or the second connecting pipe, wherein the state is the state of gas for checking the relief valve. More specifically, as a person skilled in the art, the communication relationship adjustment of the above four connection pipes is realized, and actually, only the communication relationship adjustment of three fluid routes is designed, and the corresponding valve core is a three-way valve core.
In parallel with the above functions, in order to simplify the structural design of the direct flow detection valve, the direct flow detection valve is provided with the following components: the valve also comprises a fourth connecting pipe connected to the valve body, wherein the fourth connecting pipe is communicated with the first connecting pipe or the second connecting pipe in a normal cylinder state, and the valve also comprises a plug detachably connected to the fourth connecting pipe and used for plugging the fourth connecting pipe. When the scheme is used specifically, the hole passage matched with the fourth connecting pipe on the valve body is communicated with the hole passage matched with the first connecting pipe or the second connecting pipe on the valve body. In the normal use and the verification process of the safety valve, the fourth connecting pipe is sealed by the plug, and after the verification is completed, the plug is detached, so that gas release for verification can be realized.
As an implementation mode with simple structure and easy processing and operation, the device is provided with: and the plug is in threaded connection with the free end of the fourth connecting pipe.
In order to realize the reliability of the third connecting pipe, the second connecting pipe and the first connecting pipe in the truncation state, namely, the sealing performance in the truncation state is ensured, the method is set as follows: the adjustment of the conduction relation between the third connecting pipe and the second connecting pipe or the first connecting pipe is realized by a valve core in the form of a cut-off valve.
The scheme also provides a safety valve checking system which comprises a safety valve, a root valve connected to the inlet end of the safety valve and a straight-through detection valve, wherein the straight-through detection valve is connected between the safety valve and the root valve in series, the pipe orifice of the first connecting pipe is connected with the inlet end of the safety valve, and the pipe orifice of the second connecting pipe is connected with the outlet end of the root valve. Through the analysis, the safety valve checking system can conveniently and efficiently realize the online checking of the safety valve.
The safety valve verification system adopts the further technical scheme that:
as a through check valve does not need like prefabricated pipe section, can directly be continuous with root valve, relief valve's technical scheme, set up to: and the pipe orifice of the first connecting pipe and the pipe orifice of the second connecting pipe are both provided with connecting threads or connecting flanges, and the connection between the first connecting pipe and the second connecting pipe and the safety valve and the root valve is realized through the connecting threads or the connecting flanges. The connection mode is easy to realize, and the ideal sealing performance of the matching surface can be ensured.
Because there is long-time idle state in the third takeover, and probably introduce impurity in taking over to the relief valve calibration system through the third, cause the relief valve calibration system to be destroyed, for avoiding appearing above circumstances, set up to: the sealing cover is used for sealing the third connecting pipe. The dust cover is arranged on the through detection valve during normal use of the safety valve, and the third connecting pipe is blocked to avoid introducing impurities into the safety valve calibration system through the third connecting pipe.
The utility model discloses following beneficial effect has:
specifically, one of the first connecting pipe and the second connecting pipe is used for being connected with an inlet end of the safety valve, and the other connecting pipe is used for being connected with an outlet end of the root valve, so that during the normal work of the safety valve, the communication relation between the first connecting pipe and the second connecting pipe is in a normally open state, the third connecting pipe is disconnected from the first connecting pipe or the second connecting pipe by adjusting the adjusting rod, and the valve core of the safety valve is used as a pressure boundary component of a pressure container or a pressure pipeline at the moment, so that the safety valve has an overpressure protection function on the pressure environment; and under the condition that the safety valve needs to be checked on line, the root valve is closed, the third connecting pipe is communicated with the first connecting pipe or the second connecting pipe by adjusting the adjusting rod, and checking gas can be introduced into the inner side of the valve core of the safety valve through the third connecting pipe, so that the safety valve is checked on line.
The safety valve checking system can conveniently and efficiently realize the online checking of the safety valve.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a safety valve verification system according to the present invention;
fig. 2 is a schematic structural diagram of a specific embodiment of a direct detection valve for checking a safety valve according to the present invention.
The reference numbers in the figures are in order: 1. the device comprises a direct connection detection valve, a root valve, a safety valve, a first connecting pipe, a third connecting pipe, a second connecting pipe, a valve body, a fourth connecting pipe, a regulating rod, a valve body, a fourth connecting pipe, a valve body, a regulating rod, a plug and a valve body.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples.
Example 1:
as shown in fig. 1 and 2, a straight-through detection valve for checking a safety valve, where the straight-through detection valve 1 includes a valve body 7, a plurality of connection pipes connected to the valve body 7, an adjustment rod 9 connected to the valve body 7, and a valve core arranged in the valve body 7, the adjustment rod 9 is connected to the valve core, and the on-off state adjustment between the connection pipes is realized by driving the adjustment rod 9, the connection pipes include a first connection pipe 4, a second connection pipe 6, and a third connection pipe 5, the connection state between the first connection pipe 4 and the second connection pipe 6 is a normal-on state, and the connection state between the third connection pipe 5 and the first connection pipe 4 or the second connection pipe 6 is realized by driving the adjustment rod 9.
In order to realize the online verification of the safety valve 3, during the specific verification, the communication relation between the inlet end of the safety valve 3 and the pressure container or the pipeline needs to be cut off for a short time, and the specific cutting-off measures can adopt the modes of arranging a cutting-off plate, arranging a root valve 2 and the like. The straight-through detection valve 1 aims to provide a valve which is provided with a partition measure at the inlet end of a safety valve 3, and optimizes a safety valve checking system to be convenient for carrying out online checking on the safety valve 3 if a root valve 2 is arranged.
Specifically, one of the first connecting pipe 4 and the second connecting pipe 6 is used for being connected with the inlet end of the safety valve 3, and the other connecting pipe is used for being connected with the outlet end of the root valve 2, so that during the normal operation of the safety valve 3, the communication relation between the first connecting pipe 4 and the second connecting pipe 6 is in a normally open state, the third connecting pipe 5 is disconnected from the first connecting pipe 4 or the second connecting pipe 6 by adjusting the adjusting rod 9, and at the moment, the valve core of the safety valve 3 is used as a pressure boundary component of a pressure container or a pressure pipeline, so that the safety valve has an overpressure protection function on the pressure environment; under the condition that the safety valve 3 needs to be checked on line, the root valve 2 is closed, the third connecting pipe 5 is communicated with the first connecting pipe 4 or the second connecting pipe 6 through the adjusting rod 9, and checking gas can be introduced into the inner side of the valve core of the safety valve 3 through the third connecting pipe 5, so that the safety valve 3 is checked on line.
As a person skilled in the art, the conduction relation adjustment of the three connection pipes is actually only set to the conduction relation adjustment of two fluid routes, for example, a duct of the valve body 7 connected to the third connection pipe 5 is regarded as a first fluid route, a duct of the valve body 7 connected to the first connection pipe 4 and the second connection pipe 6 is regarded as a second fluid route, and a valve element connected to the adjusting rod 9 actually only needs to realize the conduction relation adjustment of the first fluid route and the second fluid route, and the specific adjustment form may be an opening and closing form based on a ball valve, an opening and closing form based on a gate valve, an opening and closing form based on a stop valve, and the like. Therefore, the driving mode of the adjusting rod 9 can be that the adjusting rod 9 rotates around the axis of the adjusting rod or the adjusting rod 9 turns over according to the specific design.
Example 2:
as shown in fig. 1 and fig. 2, the present embodiment is further detailed on the basis of embodiment 1:
to achieve that the safety valve 3, the foot valve 2 are installed on a pair of opposite sides of the straight-through check valve 1 with respect to the straight-through check valve 1, reducing vibration and the like caused during pressure relief of the safety valve 3, it is set up that: the first connecting pipe 4 and the second connecting pipe 6 are arranged on different sides of the valve body 7, and the side where the first connecting pipe 4 is arranged is opposite to the side where the second connecting pipe 6 is arranged.
In order to ensure that the pressure relief passage is a straight passage as far as possible, the pressure relief passage is set as follows: the first adapter 4 is coaxial with the second adapter 6. Specifically, since the first connection pipe 4 and the second connection pipe 6 are in a normally open relationship, it is preferable that the valve body 7 is provided with a straight hole for communicating the first connection pipe 4 and the second connection pipe 6. Further, in order to facilitate the operation of the in-line check valve 1, it is configured such that: the first connecting pipe 4, the second connecting pipe 6, the third connecting pipe 5 and the adjusting rod 9 are respectively arranged on four different sides of the valve body 7.
After the 3 proofings of completion relief valve, for conveniently releasing for the check-up, set up to: the valve also comprises a fourth connecting pipe 8 connected to the valve body 7, the communication state of the fourth connecting pipe 8 and the first connecting pipe 4 or the second connecting pipe 6 is adjusted by driving an adjusting rod 9, and at most one of the third connecting pipe 5 and the fourth connecting pipe 8 is communicated with the first connecting pipe 4 or the second connecting pipe 6 at any time. The scheme comprises the following three states: 1. the third connecting pipe 5 and the fourth connecting pipe 8 are disconnected with the first connecting pipe 4 or the second connecting pipe 6, and the safety valve 3 is in a normal working state in the state; 2. the third connecting pipe 5 is communicated with the first connecting pipe 4 or the second connecting pipe 6, and the fourth connecting pipe 8 is disconnected from the first connecting pipe 4 or the second connecting pipe 6, wherein the state is a state of supplementing compressed gas for verification to the inner side of the valve core of the safety valve 3; 3. the third connecting pipe 5 is disconnected from the first connecting pipe 4 or the second connecting pipe 6, and the fourth connecting pipe 8 is communicated with the first connecting pipe 4 or the second connecting pipe 6, and the state is the state of gas for checking the relief valve 3. More specifically, as a person skilled in the art, the communication relationship adjustment of the above four connection pipes is realized, and actually, only the communication relationship adjustment of three fluid routes is designed, and the corresponding valve core is a three-way valve core.
In parallel with the above functions, to simplify the structural design of the straight-through check valve 1, the following are provided: the valve further comprises a fourth connecting pipe 8 connected to the valve body 7, the communication state of the fourth connecting pipe 8 and the first connecting pipe 4 or the second connecting pipe 6 is a normal cylinder state, and the valve further comprises a plug 10 detachably connected to the fourth connecting pipe 8, and the plug 10 is used for plugging the fourth connecting pipe 8. When the scheme is used specifically, the pore passage on the valve body 7 matched with the fourth connecting pipe 8 is communicated with the pore passage on the valve body 7 matched with the first connecting pipe 4 or the second connecting pipe 6. In the normal use and verification process of the safety valve 3, the fourth connecting pipe 8 is sealed by the plug 10, and after verification is completed, the plug 10 is detached, so that gas release for verification can be realized.
As an implementation mode with simple structure and easy processing and operation, the device is provided with: the plug 10 is screwed to the free end of the fourth connecting pipe 8.
In order to realize the reliability of the third connecting pipe 5, the second connecting pipe 6 and the first connecting pipe 4 in the cutting-off state, namely, the sealing performance in the cutting-off state is ensured, the sealing performance is set as follows: the adjustment of the connection between the third connection pipe 5 and the second connection pipe 6 or the first connection pipe 4 is effected by a valve element in the form of a shut-off valve.
Example 3:
as shown in fig. 1 and 2, the present embodiment is based on embodiment 1 or 2:
the embodiment provides a safety valve checking system, which comprises a safety valve 3, a root valve 2 connected to an inlet end of the safety valve 3, and the straight-through detection valve 1 as described above, wherein the straight-through detection valve 1 is connected in series between the safety valve 3 and the root valve 2, a pipe orifice of a first connecting pipe 4 is connected with an inlet end of the safety valve 3, and a pipe orifice of a second connecting pipe 6 is connected with an outlet end of the root valve 2. Through the analysis, the safety valve checking system can conveniently and efficiently realize the online checking of the safety valve 3.
Example 4:
as shown in fig. 1 and fig. 2, the present embodiment is further detailed on the basis of embodiment 3:
as a technical scheme that the straight-through detection valve 1 does not need prefabricated pipe sections and can be directly connected with the root valve 2 and the safety valve 3, the straight-through detection valve is arranged as follows: the pipe orifice of the first connecting pipe 4 and the pipe orifice of the second connecting pipe 6 are both provided with connecting threads or connecting flanges, and the connection between the first connecting pipe 4 and the second connecting pipe 6 and the safety valve 3 and the root valve 2 is realized through the connecting threads or the connecting flanges. The connection mode is easy to realize, and the ideal sealing performance of the matching surface can be ensured.
Because there is long-time idle state in third takeover 5, and probably introduce impurity in taking over 5 to the relief valve check-up system through the third, cause the relief valve check-up system to be destroyed, for avoiding appearing above circumstances, set up to: and the device also comprises a blocking cover for blocking the third connecting pipe 5. Above dust cover is installed on through check valve 1 during safety valve 3 normal use, through shutoff third takeover 5, avoids introducing impurity in the safety valve calibration system through third takeover 5.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.
Claims (10)
1. The utility model provides a relief valve check-up is with directly detecting valve, includes valve body (7), connects many takeovers on valve body (7), connects regulation pole (9) on valve body (7), sets up the case in valve body (7), regulation pole (9) link to each other with the case, adjusts pole (9) through the drive, realizes the on-off state regulation between the takeover, its characterized in that, the takeover includes first takeover (4), second takeover (6) and third takeover (5), the intercommunication state between first takeover (4) and second takeover (6) is the normal open state, the third takeover (5) and the first takeover (4) or the intercommunication state of second takeover (6) are adjusted the pole (9) realization through the drive.
2. The straight-through check valve for safety valve verification according to claim 1, wherein the first connecting pipe (4) and the second connecting pipe (6) are installed on different sides of the valve body (7), and the side where the first connecting pipe (4) is located and the side where the second connecting pipe (6) is located are in a facing relationship.
3. The in-line check valve for safety valve verification according to claim 2, wherein the first connection pipe (4) is coaxial with the second connection pipe (6).
4. The straight-through detection valve for safety valve verification according to claim 1, further comprising a fourth connection pipe (8) connected to the valve body (7), wherein the communication state of the fourth connection pipe (8) with the first connection pipe (4) or the second connection pipe (6) is adjusted by driving the adjusting lever (9), and at most one of the third connection pipe (5) and the fourth connection pipe (8) is communicated with the first connection pipe (4) or the second connection pipe (6) at any time.
5. The straight-through detection valve for safety valve verification according to claim 1, further comprising a fourth connection pipe (8) connected to the valve body (7), wherein the connection state of the fourth connection pipe (8) and the first connection pipe (4) or the second connection pipe (6) is a normal cylinder state, and further comprising a plug (10) detachably connected to the fourth connection pipe (8), wherein the plug (10) is used for plugging the fourth connection pipe (8).
6. The in-line check valve for checking safety valves according to claim 5, characterized in that the plug (10) is screwed onto the free end of the fourth connecting pipe (8).
7. The straight-through check valve for safety valve verification according to any one of claims 1 to 6, wherein the adjustment of the conduction relationship of the third connection pipe (5) with the second connection pipe (6) or the first connection pipe (4) is performed by a spool in the form of a shut-off valve.
8. Safety valve checking system comprising a safety valve (3), a root valve (2) connected to the inlet end of the safety valve (3), characterized in that it further comprises a straight-through check valve (1) according to any one of claims 1 to 7, said straight-through check valve (1) being connected in series between the safety valve (3) and the root valve (2), and the orifice of the first connecting pipe (4) being connected to the inlet end of the safety valve (3) and the orifice of the second connecting pipe (6) being connected to the outlet end of the root valve (2).
9. The safety valve verification system according to claim 8, wherein a connection thread or a connection flange is arranged on each of the nozzle of the first connecting pipe (4) and the nozzle of the second connecting pipe (6), and the connection between the first connecting pipe (4) and the second connecting pipe (6) and the safety valve (3) and the root valve (2) is realized through the connection thread or the connection flange.
10. A safety valve verification system according to claim 8, further comprising a closure cap for closing off the third nozzle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400200.7U CN211553281U (en) | 2020-03-25 | 2020-03-25 | Straight-through detection valve for safety valve verification and safety valve verification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400200.7U CN211553281U (en) | 2020-03-25 | 2020-03-25 | Straight-through detection valve for safety valve verification and safety valve verification system |
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| Publication Number | Publication Date |
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| CN211553281U true CN211553281U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020400200.7U Active CN211553281U (en) | 2020-03-25 | 2020-03-25 | Straight-through detection valve for safety valve verification and safety valve verification system |
Country Status (1)
| Country | Link |
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| CN (1) | CN211553281U (en) |
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2020
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