CN219774976U - Relief valve and relief valve control system with same - Google Patents

Abstract

The utility model discloses a pressure relief valve and a pressure relief valve control system with the same. The relief valve includes: the valve body is provided with a pressure relief valve port, the sealing cover is provided with a sealing position for sealing the pressure relief valve port and a pressure relief position separated from the pressure relief valve port, the locking piece is used for selectively locking the sealing cover at the sealing position, and the driving device is at least used for driving the locking piece to be separated from the sealing cover so as to enable the sealing cover to be at the pressure relief position. According to the pressure release valve, the sealing cover can be switched between the sealing position and the pressure release position by arranging the driving device and the locking piece, so that different use requirements of users are met.

Description

Relief valve and relief valve control system with same

Technical Field

The utility model relates to the technical field of pressure relief valves, in particular to a pressure relief valve and a pressure relief valve control system with the pressure relief valve.

Background

The risk that circuit arcing and internal deflagration pressure surge occur when internal devices such as current power electronic equipment and energy storage battery packs fail can be caused, if internal gas pressure reaches the bearing limit of equipment shells and can not release pressure rapidly, equipment explosion can be possibly caused, and the conditions of explosion of external shell structural members such as door covers and the like can be possibly caused, so that great potential safety hazards are caused for other equipment and personnel.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the utility model provides a pressure relief valve which can close or open a pressure relief valve port according to requirements.

The utility model further provides a pressure relief valve control system with the pressure relief valve.

The pressure relief valve according to an embodiment of the present utility model includes: the valve comprises a valve body, a sealing cover, a locking piece and a driving device, wherein the valve body is provided with a pressure relief valve port, the sealing cover is provided with a sealing position for sealing the pressure relief valve port and a pressure relief position separated from the pressure relief valve port, the locking piece is used for selectively locking the sealing cover at the sealing position, and the driving device is at least used for driving the locking piece to be separated from the sealing cover so as to enable the sealing cover to be positioned at the pressure relief position.

According to the pressure release valve provided by the embodiment of the utility model, the sealing cover can be switched between the sealing position and the pressure release position by arranging the driving device and the locking piece, so that different use requirements of users are met.

According to some embodiments of the utility model, the sealing cover comprises a cover main body and a cover limiting part, the cover main body seals the pressure relief valve port in the sealing position, the cover main body is separated from the pressure relief valve port in the pressure relief position, the cover limiting part is connected with the cover main body, the cover limiting part penetrates through the valve main body and extends towards a first direction, the locking part is used for selectively locking the cover limiting part in the sealing position, and the driving device is at least used for driving the locking part to be separated from the cover limiting part.

According to some embodiments of the utility model, the cap stop has a stop end face, the locking element comprises a link, the link is hingedly connected to the valve body, and a first end of the link is driven by the driving device, a second end of the link is adapted to hook the stop end face in the first direction or a second end of the link is adapted to be separated from the stop end face, and a hinge point of the link and the valve body is located between the first end and the second end.

According to some embodiments of the utility model, the second end of the connecting rod is connected with the valve main body through a first elastic piece, the driving device comprises a driving seat and a driving rod, the driving seat is mounted on the valve main body, the driving rod can extend or retract relative to the driving seat, the driving rod can drive the connecting rod to rotate around a hinge point of the connecting rod and the valve main body when extending relative to the driving seat, and the first elastic piece applies elastic force for reversely rotating the connecting rod to the second end of the connecting rod.

Optionally, the driving device is an electromagnetic driving device or a hydraulic driving device or an air pressure driving device.

According to some embodiments of the utility model, the pressure relief valve further comprises a second elastic member, the valve body has a positioning surface, the second elastic member is sleeved outside the cover limiting portion and located between the cover body and the positioning surface, and the second elastic member is adapted to apply an elastic force to the cover body to separate the cover body from the pressure relief valve port.

According to another embodiment of the utility model, the pressure release valve control system comprises a power supply device, an electric control switch and the pressure release valve, wherein the power supply device is at least used for providing power supply power for the driving device, and the electric control switch is arranged between the power supply device and the driving device and used for controlling the power on-off between the power supply device and the driving device.

According to some embodiments of the utility model, the pressure relief valve control system further comprises: the instruction issuing device judges whether the circuit parameter exceeds a preset safety threshold according to the circuit parameter of the target device, and the electric control switch is normally open when the circuit parameter does not exceed the preset safety threshold; when the circuit parameter exceeds the preset safety threshold or continuously exceeds the preset safety threshold to reach the preset time threshold, the instruction issuing device issues an instruction to the electric control switch to control the electric control switch to be closed and conducted.

According to some embodiments of the utility model, the pressure relief valve control system further comprises: and the parameter collecting device collects the circuit parameters of the target device and sends the circuit parameters to the instruction issuing device.

Optionally, the circuit parameters include one or more combinations of voltage, current, temperature, smoke concentration of the target device.

According to the pressure release valve control system provided by the embodiment of the utility model, the locking piece is used for realizing the long-term reliable closing state and the quick opening action of the pressure release valve port of the pressure release valve, the pressure release valve control system is connected with the internal control circuit of the electrical equipment, and the instruction issuing device issues an instruction by identifying the circuit parameter change of the target device, and the driving device drives the locking piece to act so as to realize the intelligent control of the quick opening of the pressure release valve port.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic perspective view of a pressure relief valve according to an embodiment of the present utility model with a seal cap in a sealing position;

FIG. 2 is a front view of a pressure relief valve according to an embodiment of the present utility model with a seal cap in a sealing position;

FIG. 3 is a cross-sectional view of a pressure relief valve according to an embodiment of the present utility model with a seal cap in a sealing position;

FIG. 4 is a schematic perspective view of a pressure relief valve according to an embodiment of the present utility model with a seal cap in a pressure relief position;

FIG. 5 is a front view of a pressure relief valve according to an embodiment of the present utility model with a seal cap in a pressure relief position;

FIG. 6 is a cross-sectional view of a pressure relief valve according to an embodiment of the present utility model with a seal cap in a pressure relief position;

FIG. 7 is a schematic view of a valve body of a pressure relief valve according to an embodiment of the present utility model;

FIG. 8 is a schematic perspective view of a seal cap of a pressure relief valve according to an embodiment of the present utility model;

FIG. 9 is another perspective view of a seal cover of a pressure relief valve according to an embodiment of the present utility model;

fig. 10 is a schematic diagram of a pressure relief valve control system according to an embodiment of the present utility model.

Reference numerals:

the pressure release valve control system 100, the pressure release valve 10, the valve main body 1, the valve seat 11, the valve port surface 111, the partition wall 112, the positioning surface 113, the support arm 12, the strut a, the sealing cover 2, the cover main body 21, the cover limiting part 22, the limiting end surface 221, the rod part 222, the end part 223, the locking piece 3, the first end 31 of the connecting rod, the second end 32 of the connecting rod, the driving device 4, the driving seat 41, the driving rod 42, the first elastic piece 5, the second elastic piece 6, the power supply device 20, the electric control switch 30, the command issuing device 40 and the parameter collecting device 50.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

A relief valve 10 and a relief valve control system 100 having the relief valve 10 according to an embodiment of the present utility model are described in detail below with reference to fig. 1-10.

Referring to fig. 1 to 6, a relief valve 10 according to an embodiment of the present utility model may include a valve body 1, a sealing cover 2, a locking member 3, and a driving device 4.

The valve body 1 is provided with a relief valve port, when the relief valve port is opened, two ends of the valve body 1 can be communicated through the relief valve port, and when the relief valve port is closed, two ends of the valve body 1 cannot be communicated through the relief valve port, that is, two ends of the valve body 1 are isolated. When the relief valve 10 is mounted on the equipment housing and the relief valve port is opened, the interior of the housing and the exterior of the housing can be communicated through the relief valve port, and when the relief valve port is closed, the interior of the housing and the exterior of the housing are isolated.

The sealing cover 2 is provided with a sealing position for sealing the pressure relief valve port and a pressure relief position separated from the pressure relief valve port, and the opening and closing state of the pressure relief valve port can be changed by changing the position of the sealing cover 2.

The locking piece 3 is used for selectively locking the sealing cover 2 at the sealing position, and the pressure relief valve 10 does not relieve pressure when the sealing cover 2 is locked at the sealing position. The locking piece 3 locks the position of the sealing cover 2, so that the pressure release valve 10 can be effectively prevented from leaking when pressure release is not needed, and the working reliability of the pressure release valve 10 is improved.

The driving device 4 is at least used for driving the locking piece 3 to be separated from the sealing cover 2 so as to enable the sealing cover 2 to be in a pressure release position. Specifically, when the locking piece 3 hooks the sealing cover 2, the sealing cover 2 seals the pressure relief valve port, and the pressure relief valve port is closed; when the locking piece 3 is separated from the sealing cover 2, the sealing cover 2 is separated from the pressure release valve port, and the pressure release valve port is opened. The driving device 4 drives the locking piece 3 to act so as to separate the locking piece 3 from the sealing cover 2, and the locking force of the locking piece 3 on the sealing cover 2 is released.

In some embodiments, the driving device 4 may also be used to drive the locking member 3 into re-contact with the sealing cap 2 to re-lock the sealing cap 2 in the sealing position.

Optionally, the driving device 4 is an electric driving device, so that the action of the locking piece 3 can be automated, which is beneficial to saving manpower, and high-temperature and high-pressure substances (such as gas, liquid, solid or mixture) sprayed out of the pressure release valve port during manual driving of the locking piece 3 can be prevented from scalding operators. Of course, the drive 4 can also be designed as a drive in the case of a better protection.

According to the pressure release valve 10 provided by the embodiment of the utility model, the sealing cover 2 can be switched between the sealing position and the pressure release position by arranging the driving device 4 and the locking piece 3, so that different use requirements of users can be met.

In some embodiments of the present utility model, referring to fig. 1-6 and 8-9, the sealing cover 2 may include a cover main body 21 and a cover limiting portion 22, where the cover main body 21 covers the relief valve port in the sealing position, and the cover main body 21 is separated from the relief valve port in the relief position, and the diameter of the cover main body 21 is larger than that of the relief valve port, so that the cover main body 21 effectively seals the relief valve port, and leakage at the relief valve port in the sealing position is avoided. The cover spacing portion 22 is connected with the cover main body 21, the cover spacing portion 22 is worn to locate the valve main body 1, and the cover spacing portion 22 extends to first direction F1, and the locking piece 3 is used for selectively locking the cover spacing portion 22 in sealed position, and drive arrangement 4 is used for driving at least that locking piece 3 and cover spacing portion 22 separation, so, locking piece 3 can not contact with the cover main body 21, can reduce the deformation of the cover main body 21, prevents that the cover main body 21 from being out of order because of the deformation seals with the pressure release valve port.

Referring to fig. 9, the cap stopper 22 may include a rod 222 and an end 223, the rod 222 connecting the cap body 21 and the end 223, the cap body 21 being located at one end of the valve body 1, the rod 222 penetrating the valve body 1 and extending in the first direction F1, the end 223 being located at the other end of the valve body 1. Referring to fig. 7, the valve body 1 includes a valve seat 11, the valve seat 11 includes an annular outer wall and a plurality of partition walls 112 provided inside the annular outer wall, the plurality of partition walls 112 are separated from each other, upper end surfaces of the plurality of partition walls 112 are formed as valve port surfaces 111, gaps between the plurality of partition walls 112 are formed as relief valve ports, the valve port surfaces 111 are capable of limiting a limit position of the cover body 21 in the first direction F1, and when the cover body 21 is attached to the valve port surfaces 111, the seal cover 2 seals the relief valve ports, and both ends of the valve body 1 are not communicated; when the cover body 21 is separated from the valve port surface 111, both ends of the valve body 1 communicate.

In some embodiments of the utility model, the cap stop 22 has a stop end 221, the locking element 3 comprises a connecting rod, which is hinged to the valve body 1 and the first end 31 of which is driven by the driving means 4, the second end 32 of which is adapted to catch the stop end 221 in the first direction F1, when the sealing cap 2 is in the sealing position; the second end 32 of the connecting rod is also adapted to be separated from the limiting end surface 221, at which time the sealing cap 2 is in a pressure relief position. The hinge point of the connecting rod with the valve body 1 (i.e. at the strut a) is located between the first end 31 and the second end 32.

Referring to fig. 9, the cap stopper 22 may include a rod 222 and an end 223, the rod 222 connecting the cap body 21 and the end 223, the maximum outer diameter of the end 223 being greater than the outer diameter of the rod 222, and the stopper end surface 221 being a surface of the end 223 connected to the rod 222. The end 223 may be configured as a truncated cone with a large diameter end of the truncated cone near the stem 222 and a small diameter end of the truncated cone far from the stem 222, the stem 222 being connected to the large diameter end of the truncated cone.

Optionally, the limiting end surface 221 is planar, such that the second end 32 of the connecting rod is facilitated to hook the limiting end surface 221 along the first direction F1.

Referring to fig. 7, the valve body 1 includes a valve seat 11 and a support arm 12, the support arm 12 is connected to the valve seat 11, a strut a is provided on the support arm 12, a link is provided on the strut a, and the link is rotatable about the strut a. Specifically, the connecting rod is provided with a mounting hole, and the support column A is inserted into the mounting hole.

In some embodiments of the present utility model, the second end 32 of the connecting rod is connected to the valve body 1 through the first elastic member 5, the driving device 4 includes a driving seat 41 and a driving rod 42, the driving seat 41 is mounted on the valve body 1, the driving rod 42 can be extended or retracted relative to the driving seat 41, the driving rod 42 can drive the connecting rod to rotate around the hinge point of the connecting rod and the valve body 1 when being extended relative to the driving seat 41, and the first elastic member 5 applies an elastic force for reversely rotating the connecting rod to the second end 32 of the connecting rod. Specifically, the driving lever 42 can drive the link to rotate clockwise around the strut a when extended relative to the driving seat 41, and the first elastic member 5 applies an elastic force to the second end 32 of the link to rotate the link counterclockwise.

Specifically, the first elastic member 5 is a first spring that is compressible when subjected to the pressing force, and is capable of restoring its original length after the pressing force is removed.

In some embodiments, the drive device 4 is an electromagnetic drive device. The drive rod 42 is a magnetic core that, in an energized state, generates a reverse magnetic force that extends to push against and downward against the first end 31 of the link.

In some embodiments, the drive device 4 is a hydraulic drive device and the drive rod 42 is a hydraulic drive rod.

In some embodiments, the drive device 4 is a pneumatic drive device and the drive rod 42 is a pneumatic drive rod.

In some embodiments of the present utility model, referring to fig. 3 and 6-7, the relief valve 10 may further include a second elastic member 6, where the valve body 1 has a positioning surface 113, the second elastic member 6 is sleeved outside the cover limiting portion 22, and the second elastic member 6 is located between the cover body 21 and the positioning surface 113, and the second elastic member 6 is adapted to apply an elastic force to the cover body 21 to separate the cover body 21 from the relief valve port, so that the cover body 21 is separated from the valve body 1 by applying an elastic force to the cover body 21 to separate the cover body 21 from the relief valve port, for example, in a sealing position, the second elastic member 6 applies an elastic force to the cover body 21 to separate the cover body 21 from the relief valve port, such that, once the locking member 3 is separated from the cover limiting portion 22, the cover body 21 is separated from the relief valve port by an elastic force of the second elastic member 6. Specifically, the second elastic member 6 is adapted to apply an elastic force in the opposite direction to the first direction F1, i.e., an elastic force in the upward direction, to the cover main body 21.

Specifically, the second elastic member 6 is a second spring that is compressible when subjected to the pressing force, and is capable of restoring its original length after the pressing force is removed.

Referring to fig. 3 and 6-7, a receiving chamber is defined between inner ends of the plurality of partition walls 112, a chamber bottom of the receiving chamber is formed as the above-mentioned positioning surface 113, the second elastic member 6 is positioned in the receiving chamber, and a lower end of the second elastic member 6 abuts against the positioning surface 113, and an upper end of the second elastic member 6 abuts against a lower surface of the cover main body 21.

A relief valve 10 according to a specific example of the present utility model is described below with reference to fig. 1-6.

The pressure release valve 10 comprises a valve main body 1, a sealing cover 2, a first spring, a second spring, a connecting rod and a driving device 4, wherein the sealing cover 2 comprises a cover main body 21 and a cover limiting part 22, the cover limiting part 22 comprises a rod part 222 and an end part 223, the rod part 222 is connected with the cover main body 21 and the end part 223, the rod part 222 penetrates through the valve main body 1, the end part 223 downwards passes through the valve main body 1, the second spring is arranged between the sealing cover 2 and the valve main body 1, and the second spring is used for rapidly bouncing the sealing cover 2; as shown in fig. 1-3, the second end 32 of the connecting rod is abutted against the tail end 223 of the sealing cover 2 and is also connected with a first spring, and the first spring pulls the second end 32 of the connecting rod, so that the second end 32 of the connecting rod and the limit end surface 221 of the tail of the sealing cover 2 form a locking state under a normal state; as shown in fig. 4 to 6, the first end 31 of the connecting rod approaches the driving device 4, the driving device 4 acts to push the first end 31 of the connecting rod to move in the first direction F1 (act b 1), the first end 31 of the connecting rod rotates clockwise around the hinge point of the connecting rod and the valve main body 1 (act b 2), the second end 32 of the connecting rod is driven to be separated from the limiting end surface 221 at the tail part of the sealing cover 2 (act b 3), and the sealing cover 2 is sprung open by the elastic force of the second spring (act b 4).

Referring to fig. 10, a relief valve control system 100 according to another aspect of the present utility model may include a power supply device 20, an electric control switch 30, and the relief valve 10 of the foregoing embodiments, where the power supply device 20 is at least used for providing power for the driving device 4, the electric control switch 30 is disposed between the power supply device 20 and the driving device 4, and the electric control switch 30 is used for controlling power on/off between the power supply device 20 and the driving device 4.

In some embodiments of the present utility model, the pressure release valve control system 100 may further include a command issuing device 40, where the command issuing device 40 determines, according to a circuit parameter of the target device, whether the circuit parameter exceeds a preset safety threshold, and when the circuit parameter does not exceed the preset safety threshold, the electronic control switch 30 is normally open, so that the power between the power supply device 20 and the driving device 4 is disconnected; when the circuit parameter exceeds the preset safety threshold or continuously exceeds the preset safety threshold to reach the preset time threshold, the instruction issuing device 40 issues an instruction to the electric control switch 30 to control the electric control switch 30 to be closed and conducted, so that the power supply device 20 is in electric power communication with the driving device 4.

In some embodiments of the present utility model, the pressure relief valve control system 100 may further include a parameter collection device 50, where the parameter collection device 50 collects circuit parameters of the target device and sends the circuit parameters to the command issuing device 40. According to the pressure relief valve control system 100 provided by the embodiment of the utility model, the pressure relief valve 10 can be intelligently controlled, the pressure relief valve 10 can automatically perform pressure relief action according to abnormal information feedback of an equipment system, and the internal air pressure change of the equipment can be more accurately and timely controlled by setting the boundary condition of the control system.

Alternatively, the power supply device 20 may be further configured to provide power to the electronically controlled switch 30, the command issuing device 40, and the parameter collecting device 50.

Alternatively, the circuit parameters may include one or more combinations of voltage, current, temperature, smoke concentration of the target device. The target device may be a device in the equipment system that is prone to failure.

In some embodiments, the parameter collecting module may collect circuit parameters such as voltage, current, temperature or smoke concentration at a position where a fault device easily occurs in the equipment system, and transmit the circuit parameters to the instruction issuing device 40, where the instruction issuing device 40 determines whether the circuit parameters exceed a system-defined safety range value (i.e. a preset safety threshold), if the circuit parameters exceed or exceed the system-defined safety range value for a long time, the instruction is issued to the electric control switch 30, so that the electric control switch 30 is closed and turned on, the power supply device 20 is connected with the pressure release valve 10, the pressure release valve 10 is powered on to enable the internal driving device 4 to be started, the locking piece 3 is separated from the sealing cover 2, the sealing cover 2 pops up, and the pressure release valve port is opened.

According to the relief valve control system 100 of the embodiment of the present utility model, the locking member 3 is used to enable the relief valve port of the relief valve 10 to realize a long-term reliable closed state and a quick opening motion, the relief valve control system 100 is connected with an internal control circuit of an electrical device, and the quick opening of the relief valve port of the intelligent control relief valve 10 can be realized by identifying the change of a circuit parameter of a target device in the electrical device, and the command issuing device 40 issues a command to the electronic control switch 30 to enable the electronic control switch 30 to be closed and conducted, and the driving device 4 drives the locking member 3 to move. The pressure release valve 10 is intelligently controlled by being connected with electrical equipment, and a pressure release valve port is opened for pressure release when the equipment fails internally, so that the pressure release valve is ingenious in design and easy to install.

The pressure release valve control system 100 can be applied to an equipment system, and can rely on a control module (serving as a command issuing device 40), a data acquisition module (serving as a parameter collecting device 50) and a power supply module (serving as a power supply device 20) carried by the equipment system, so that no additional increase is needed, and the cost is controllable. The device system can be an energy storage battery pack or other power electronic devices.

Alternatively, the pressure release valve 10 may be installed on a casing wall of the apparatus, where a pressure release valve port of the pressure release valve 10 is disposed outside the casing, and inside the casing is the locking member 3, the driving device 4, the power supply device 20, the electric control switch 30, the instruction issuing device 40, and the parameter collecting device 50. The pressure release valve control system 100 according to the embodiment of the utility model has smart design, is convenient to install, can be installed in a hidden manner, and is beneficial to reducing the influence on the appearance of equipment.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A pressure relief valve (10), comprising:

a valve body (1), the valve body (1) having a relief valve port;

the sealing cover (2) is provided with a sealing position for sealing the pressure relief valve port and a pressure relief position separated from the pressure relief valve port;

a locking member (3), the locking member (3) being adapted to selectively lock the sealing cover (2) in the sealing position;

and the driving device (4) is at least used for driving the locking piece (3) to be separated from the sealing cover (2) so as to enable the sealing cover (2) to be in the pressure relief position.

2. The pressure relief valve (10) according to claim 1, characterized in that the sealing cover (2) comprises a cover main body (21) and a cover limiting part (22), the cover main body (21) covers the pressure relief valve port in the sealing position, the cover main body (21) is separated from the pressure relief valve port in the pressure relief position, the cover limiting part (22) is connected with the cover main body (21), the cover limiting part (22) penetrates through the valve main body (1) and extends towards a first direction, the locking piece (3) is used for selectively locking the cover limiting part (22) in the sealing position, and the driving device (4) is at least used for driving the locking piece (3) to be separated from the cover limiting part (22).

3. The pressure relief valve (10) according to claim 2, characterized in that the cap stop (22) has a stop end face (221), the locking element (3) comprises a connecting rod, which is hingedly connected to the valve body (1), and the first end (31) of which is driven by the driving means (4), the second end (32) of which is adapted to hook the stop end face (221) in the first direction or the second end (32) of which is adapted to be separated from the stop end face (221), the hinge point of which is located between the first end (31) and the second end (32) of the valve body (1).

4. A pressure release valve (10) according to claim 3, wherein the second end (32) of the connecting rod is connected with the valve body (1) through a first elastic member (5), the driving device (4) comprises a driving seat (41) and a driving rod (42), the driving seat (41) is mounted on the valve body (1), the driving rod (42) can extend or retract relative to the driving seat (41), the driving rod (42) can drive the connecting rod to rotate around a hinge point of the connecting rod and the valve body (1) when extending relative to the driving seat (41), and the first elastic member (5) exerts elastic force for reversely rotating the connecting rod on the second end (32) of the connecting rod.

5. A pressure relief valve (10) according to claim 3, characterized in that the drive means (4) is an electromagnetic drive means or a hydraulic drive means or a pneumatic drive means.

6. The pressure relief valve (10) according to claim 2, characterized in that the pressure relief valve (10) further comprises a second elastic member (6), the valve body (1) has a positioning surface (113), the second elastic member (6) is sleeved outside the cover limiting portion (22) and between the cover body (21) and the positioning surface (113), and the second elastic member (6) is adapted to apply an elastic force to the cover body (21) to separate the cover body (21) from the pressure relief valve port.

7. A pressure relief valve control system (100), comprising:

the pressure relief valve (10) of any one of claims 1-6;

-a power supply device (20), the power supply device (20) being at least for providing power to the drive device (4);

the electric control switch (30) is arranged between the power supply device (20) and the driving device (4) and used for controlling the power on-off between the power supply device (20) and the driving device (4).

8. The pressure relief valve control system (100) of claim 7, further comprising: the instruction issuing device (40), the instruction issuing device (40) judges whether the circuit parameter exceeds a preset safety threshold according to the circuit parameter of the target device, and the electric control switch (30) is normally open when the circuit parameter does not exceed the preset safety threshold; when the circuit parameter exceeds the preset safety threshold or continuously exceeds the preset safety threshold to reach a preset time threshold, the instruction issuing device (40) issues an instruction to the electric control switch (30) to control the electric control switch (30) to be closed and conducted.

9. The pressure relief valve control system (100) of claim 8, further comprising: and a parameter collection device (50), wherein the parameter collection device (50) collects the circuit parameters of the target device and sends the circuit parameters to the instruction issuing device (40).

10. The pressure relief valve control system (100) of claim 9, wherein the circuit parameter comprises one or more of a combination of voltage, current, temperature, smoke concentration of a target device.