Safety valve

Abstract

The utility model relates to the technical field of safety valves, in particular to a safety valve, which comprises a pressure relief unit, a pressure relief unit, a first pressure relief unit, a second pressure relief unit, a first pressure relief unit and a second pressure relief unit, and the pressure relief unit comprises a valve body, a connecting end and a pressure relief end, the stroke unit comprises a flying pendulum assembly arranged on the pressure relief end, an identification assembly arranged on the flying pendulum assembly, a positioning assembly arranged on the flying pendulum assembly and a locking assembly arranged on the flying pendulum assembly, airflow at the pressure relief end blows the wind scoop to rotate, at the moment, the wind scoop circularly touches and presses the touch button, and then the wind scoop rotates. When the wind scoop rotates, the marking belt is pulled out of the winding shaft, the pressure relief action can be judged according to the length of the marking belt, the positioning assembly can reset the wind scoop which deviates after pressure relief is completed, and therefore the working staff can sense the wind scoop. And the phenomenon that subsequent pressure relief cannot be perceived due to deviation of the wind scoop is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a safety valve. Background Art

[0002] Pressure gas tanks are widely used in existing industrial production, especially high-pressure gas tanks. In some cases, when the pressure of the pressure gas tank exceeds the set value of the safety valve, the safety valve will be activated to release the pressure;

[0003] However, the existing safety valve cannot intuitively display the information after its action after pressure relief, so that when the staff checks, they cannot directly know that the safety valve has experienced pressure relief. If the air machine fails and continues to pressurize, the safety valve will inevitably continue to operate. At this time, the high-pressure gas will continue to leak, which will inevitably bring safety hazards to the surrounding environment and personal safety. Therefore, it is necessary to design a structure that can detect whether the safety valve has experienced pressure relief. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problem that it is impossible to know after the pressure relief of the safety valve, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a safety valve.

[0007] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: including a pressure relief unit, including a valve body, a connecting end arranged on the valve body, a pressure relief end arranged on the valve body, and a touch button arranged on one side of the pressure relief end; a stroke unit, including a flying pendulum assembly arranged on the pressure relief end, an identification assembly arranged on the flying pendulum assembly, a positioning assembly arranged on the flying pendulum assembly, and a locking assembly arranged on the flying pendulum assembly.

[0008] As a preferred solution of the safety valve of the utility model, the flying pendulum assembly includes a bracket arranged on the pressure relief end, a movable shaft arranged on the bracket, a cross rod arranged on the movable shaft, and a wind scoop arranged on the cross rod.

[0009] As a preferred solution of the safety valve of the utility model, the identification component includes a winding member arranged on a bracket, and a transmission member arranged on the bracket.

[0010] As a preferred solution of the safety valve of the utility model, the winding member includes a winding box arranged on a bracket, a winding shaft arranged on the winding box, and an identification tape arranged on the winding shaft.

[0011] As a preferred solution of the safety valve of the utility model, the transmission member includes a rotating wheel arranged on the movable shaft, a soft pad arranged on the rotating wheel, and a matching plate arranged on the bracket.

[0012] As a preferred solution of the safety valve of the utility model, the positioning assembly includes a rotating member arranged on the movable shaft, a limiting member arranged on the bracket, and an unlocking member arranged on the limiting member.

[0013] The rotating member includes a disc arranged on the movable shaft, and a corresponding block arranged on the disc.

[0014] The limiting member includes a fixing rod arranged on the bracket, a fixing plate arranged on the fixing rod, a mounting spring arranged on the fixing plate, an adapting column arranged on the mounting spring, and a moving rod arranged on the adapting column.

[0015] The unlocking member comprises an embedding rod arranged on the fixing plate, a groove arranged on the embedding rod, a supporting spring arranged on the groove, and a spring block arranged on the supporting spring.

[0016] As a preferred solution of the safety valve of the utility model, the locking assembly includes a column arranged on a bracket, a piston block arranged on the column, a piston rod arranged on the piston block, a suction cup arranged on the piston rod, and a sealing member arranged on the bracket.

[0017] The beneficial effects of the safety valve described in the utility model are as follows: the utility model drives the wind scoop to rotate by the airflow at the pressure relief end, and the wind scoop cyclically touches the touch button, thereby generating a signal to the upper computer monitoring system so that the staff can perceive it, and when the wind scoop rotates, the identification tape is pulled out from the reel, so that the pressure relief action can be judged according to the length of the identification tape, and its positioning component can reset the wind scoop that has been offset after the pressure relief is completed, to avoid the offset of the wind scoop causing the subsequent pressure relief to be unable to be perceived. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is the overall schematic diagram of the safety valve.

[0020] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Figure 3 A cross-sectional view of a marked component.

[0022] Figure 4 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Figure 5 This is a schematic diagram of the appearance of the restricted component.

[0024] Figure 6 A cross-sectional view of a restriction assembly is shown.

[0025] Figure 7 It is a cross-sectional schematic diagram of the locking assembly. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figure 1 , which is the first embodiment of the utility model, provides a safety valve, including a pressure relief unit 100 and a stroke unit 200. The pressure relief unit 100 is connected to a high-pressure gas tank. When the gas pressure in the tank exceeds a set value, the pressure relief unit 100 opens to relieve the pressure of the gas tank. The stroke unit 200 is used to maintain the pressure relief chamber, and its pressure relief action is captured and displayed through a mark.

[0031] Specifically, the pressure relief unit 100 includes a valve body 101 and a connecting end 102 arranged on the valve body 101. The connecting end 102 is connected to the high-pressure gas tank. The valve body 101 separates the connecting end 102 and the pressure relief end 103. When pressure relief is required, the high pressure triggers the valve body 101, the valve body 101 opens, and the gas flows out from the pressure relief end 103.

[0032] Operation process: When the pressure is released, the internal pressure of the gas tank is sufficient to trigger the force of the spring in the valve body 101 on the valve disc, so that the valve disc no longer separates the connecting end 102 and the pressure relief end 103, and the gas in the gas tank can flow out from the pressure relief end 103.

[0033] Example 2

[0034] Reference Figure 1-Figure 6 , which is the second embodiment of the utility model, and is different from the previous embodiment in that: the stroke unit 200 includes a flying pendulum assembly 201 arranged on the pressure relief end 103, and the flying pendulum assembly 201 is located on one side of the pressure relief end 103. When the pressure relief end 103 is under pressure, the airflow can blow the flying pendulum assembly 201 to move the flying pendulum assembly 201 and then drive the identification assembly 202 on one side, so that the identification assembly 202 changes, so that the staff can judge the pressure relief action according to the identification assembly 202. The positioning assembly 203 installed on one side of the flying pendulum assembly 201 is used to correct the position of the flying pendulum assembly 201, so that when pressure relief occurs, the flying pendulum assembly 201 can be moved. The locking assembly 204 is installed on the top of the flying pendulum assembly 201, and the locking assembly 204 is used to lock the flying pendulum assembly 201, so that the flying pendulum assembly 201 will not swing at will when not in use, thereby protecting the stroke unit 200.

[0035] Furthermore, the flying pendulum assembly 201 includes a bracket 201a arranged on the pressure relief end 103, and a movable shaft 201b is movably installed at the bottom of the bracket 201a through a bearing, and a cross rod 201c is installed at the central part of the movable shaft 201b. A group of wind scoops 201d are respectively installed at the four ends of the cross rod 201c, and the wind scoops 201d are tilted so that the wind scoops 201d can be blown by the lateral airflow of the pressure relief end 103, thereby driving the movable shaft 201b to rotate. When the wind scoops 201d rotate, each group of wind scoops 201d will touch and press the touch button 104 set on the top side of the bracket, and the touch button 104 can send the touch pressure signal to the upper computer monitoring system, so that the staff can know the safety valve action signal, and then the upper computer will issue an air compressor shutdown command to feed back to the air compressor (regardless of whether the air compressor is running), thereby realizing overpressure protection of the air compressor and avoiding continuous pressure relief due to the action of the gas tank safety valve.

[0036] Furthermore, the identification component 202 includes a winding member 202a arranged on the bracket 201a, and a transmission member 202b is installed on the outer wall of the bracket 201a. When the movable shaft 201b rotates, the movable shaft 201b drives the transmission member 202b to move, and the transmission member 202b drives the winding member 202a, thereby completing the identification.

[0037] Furthermore, the winding member 202a includes a winding box 202a-1 arranged on the bracket 201a, and the inner wall of the winding box 202a-1 is installed with a winding shaft 202a-2, and the outer wall of the winding shaft 202a-2 is wound with an identification tape 202a-3. When the transmission member 202b rotates, the identification tape 202a-3 is withdrawn downward by the transmission member 202b, and the staff can make a judgment on the pressure relief action according to the length of the identification tape 202a-3. One end of the winding shaft 202a-2 extends out of the outer wall of the winding box 202a-1, and the winding shaft 202a-2 can be rotated to rewind the identification tape 202a-3.

[0038] Furthermore, the transmission member 202b includes a rotating wheel 202b-1 arranged on the movable shaft 201b, a soft pad 202b-2 is installed on the outer wall of the rotating wheel 202b-1, and a matching plate 202b-3 is installed on the outer wall of the bracket 201a, and the matching plate 202b-3 is located on one side of the rotating wheel 202b-1, and its soft pad 202b-2 and matching plate 202b-3 clamp the identification tape 202a-3, so that when the movable shaft 201b rotates, the rotation of the movable shaft 201b drives the rotating wheel 202b-1 to rotate, and the rotation of the rotating wheel 202b-1 drives the identification tape 202a-3 to move, thereby pulling the identification tape 202a-3 out of the winding shaft 202a-2, so that the pressure relief action can be judged according to the length of the identification tape 202a-3.

[0039] Furthermore, the positioning assembly 203 includes a rotating member 203a arranged on the movable shaft 201b, and the rotating member 203a rotates synchronously with the movable shaft 201b. A limiting member 203b is installed on one side of the bracket 201a, and an unlocking member 203c is installed on the outer wall of the limiting member 203b. When the rotating member 203a rotates, it can drive the limiting member 203b to rotate. After the limiting member 203b rotates 90°, the unlocking member 203c matches the limiting member 203b, and the rotating member 203a no longer contacts the limiting member 203b.

[0040] Furthermore, the rotating member 203a includes a disk 203a-1 arranged on the movable shaft 201b, and four groups of corresponding blocks 203a-2 are installed on the inner wall of the disk 203a-1. Each group of corresponding blocks 203a-2 corresponds to the position of the wind scoop 201d. When the wind scoop 201d rotates, its corresponding block 203a-2 also rotates synchronously with the wind scoop 201d.

[0041] Furthermore, the limiting member 203b includes a fixed rod 203b-1 arranged on the bracket 201a, a fixed plate 203b-2 is installed on the outer wall of the fixed rod 203b-1, a mounting spring 203b-3 is installed on the outer wall of the fixed plate 203b-2, an adaption column 203b-4 is installed on one end of the mounting spring 203b-3, the adaption column 203b-4 is embedded in the interior of the disc 203a-1, a moving rod 203b-5 is installed on the inner wall of the adaption column 203b-4, and the moving rod 203b-5 is located on one side of the corresponding block 203a-2 above. When the corresponding block 203a-2 rotates, the corresponding block 203a-2 contacts with the moving rod 203b-5, thereby driving the adaption column 203b-4 to rotate. When the adaption column 203b-4 rotates, its mounting spring 203b-3 is deformed and stores force.

[0042] Furthermore, the unlocking member 203c includes an embedded rod 203c-1 arranged on the fixed plate 203b-2, the embedded rod 203c-1 extends to the inside of the adapting column 203b-4, and the outer wall of the embedded rod 203c-1 is provided with a groove 203c-2, and the groove 203c-2 is opened from the original position of the moving rod 203b-5 along the axial rotation direction of the movable shaft 201b by 90 degrees, so that when the corresponding block 203a-2 rotates to drive the moving rod 203b-5 to rotate, when the moving rod 203b-5 rotates by 90 degrees, the moving rod 203b-5 can be pressed and embedded in the groove 203c-2, and when the pressure relief continues, the moving rod 203b-5 is always abutted against the groove 203c-2. When the pressure relief stops, the supporting spring 203c-3 arranged on the groove 203c-2 restores the elastic block 203c-4 at one end, so that the moving rod 203b-5 is reset. At this time, the deformation of the mounting spring 203b-3 is restored, so that the moving rod 203b-5 rotates and recovers. When the moving rod 203b-5 recovers, the moving rod 203b-5 must contact a group of corresponding blocks 203a-2, and drive the corresponding blocks 203a-2 to move, so that the wind scoop 201d matching the group of corresponding blocks 203a-2 moves to the port of the pressure relief end 103, thereby ensuring that the wind scoop 201d can be blown during the next pressure relief, avoiding the displacement of the wind scoop 201d causing the pressure relief to be imperceptible.

[0043] The rest of the structure is the same as that of Example 1.

[0044] Operation process: When the pressure is released, the airflow at the pressure release end 103 blows the wind spoon 201d to rotate. At this time, the wind spoon 201d cyclically touches the touch button 104, and when the wind spoon 201d rotates, its movable shaft 201b rotates to drive the rotating wheel 202b-1 to rotate, and the rotating wheel 202b-1 rotates to drive the marking tape 202a-3 to move, so that the marking tape 202a-3 is pulled out from the winding shaft 202a-2, so that the marking tape 202a-3 can be adjusted according to the length of the marking tape 202a-3. The pressure relief action is judged, and after the judgment is completed, the reel 202a-2 can be rotated to reel the identification tape 202a-3 back to its original state. Whenever the wind scoop 201d rotates, the corresponding block 203a-2 also rotates synchronously with the wind scoop 201d. The corresponding block 203a-2 contacts the moving rod 203b-5, thereby driving the adapting column 203b-4 to rotate. When the adapting column 203b-4 rotates, the mounting spring 203b-3 is deformed and stores force, and the moving rod 203b-5 is in contact with the moving rod 203b-5, thereby driving the adapting column 203b-4 to rotate. When the movable rod 203b-5 rotates 90°, the movable rod 203b-5 can be pressed and embedded in the groove 203c-2. When the pressure relief continues, the movable rod 203b-5 is always pressed in the groove 203c-2. When the pressure relief stops, the support spring 203c-3 set on the groove 203c-2 restores the spring block 203c-4 at one end, so that the movable rod 203b-5 is reset. At this time, the deformation of the mounting spring 203b-3 is restored. , so that the moving rod 203b-5 rotates and recovers. When the moving rod 203b-5 recovers, the moving rod 203b-5 must contact a group of corresponding blocks 203a-2, and drive the corresponding blocks 203a-2 to move, so that the wind scoop 201d matched with the group of corresponding blocks 203a-2 moves to the port of the pressure relief end 103, thereby ensuring that the wind scoop 201d can be blown during the next pressure relief, avoiding the deviation of the wind scoop 201d causing the pressure relief to be imperceptible.

[0045] Example 3

[0046] Reference Figure 7 , which is the third embodiment of the utility model. Different from the above embodiments, the locking assembly 204 includes a column 204a arranged on the bracket 201a, a piston block 204b is installed on the inner wall of the column 204a, a piston rod 204c is installed at the bottom of the piston block 204b, a suction cup 204d is installed at the bottom of the piston rod 204c, and a sealing member 204e is installed inside the bracket 201a, and the suction cup 204d can contact with the wind scoop 201d, so as to fix the wind scoop 201d. When fixation is not needed, the piston rod 204c can be retracted without affecting the use of the wind scoop 201d.

[0047] Specifically, the sealing member 204e includes an air hole 204e-1 provided on the bracket 201a, the air hole 204e-1 extends into the interior of the main body, a support plate 204e-2 is installed on the inner wall of the air hole 204e-1, a return spring 204e-3 is installed on the top of the support plate 204e-2, the return spring 204e-3 supports the button 204e-4 installed on the top side, an air groove 204e-5 is provided on the outer wall of the button 204e-4, a sealing block 204e-6 is installed on the inner wall of the air hole 204e-1, the return spring 204e-3 maintains the air groove 204e-5 of the button 204e-4 on the top side of the sealing block 204e-6, at which time the bottom side of the button 204e-4 contacts with the sealing block 204e-6 to form a sealed state.

[0048] The rest of the structure is the same as that of Example 2.

[0049] Operation process: when it is necessary to move the piston rod 204c, the button 204e-4 can be pressed, and the button 204e-4 moves so that the air groove 204e-5 is embedded in the sealing block 204e-6, so that the air groove 204e-5 passes through the sealing block 204e-6. At this time, the sealing state is cancelled, and the piston rod 204c and the piston block 204b can be pulled to move freely in the column 204a, so that the suction cup 204d on the bottom side can be adsorbed on the surface of the wind scoop 201d, thereby fixing the wind scoop 201d, so that when the safety valve is not in use, the wind scoop 201d is fixed to prevent the wind scoop 201d from swinging randomly and causing damage.

[0050] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A safety valve, characterized in that: include, A pressure relief unit (100) comprises a valve body (101), a connecting end (102) arranged on the valve body (101), a pressure relief end (103) arranged on the valve body (101), and a touch button (104) arranged on one side of the pressure relief end (103); The stroke unit (200) comprises a flying pendulum assembly (201) arranged on the pressure relief end (103), an identification assembly (202) arranged on the flying pendulum assembly (201), a positioning assembly (203) arranged on the flying pendulum assembly (201), and a locking assembly (204) arranged on the flying pendulum assembly (201).

2. The safety valve according to claim 1, characterized in that: The flying pendulum assembly (201) comprises a bracket (201a) arranged on the pressure relief end (103), a movable shaft (201b) arranged on the bracket (201a), a cross rod (201c) arranged on the movable shaft (201b), and a wind scoop (201d) arranged on the cross rod (201c).

3. The safety valve according to claim 2, characterized in that: The identification component (202) comprises a winding member (202a) arranged on a bracket (201a), and a transmission member (202b) arranged on the bracket (201a).

4. The safety valve according to claim 3, characterized in that: The winding member (202a) comprises a winding box (202a-1) arranged on a bracket (201a), a winding shaft (202a-2) arranged on the winding box (202a-1), and an identification tape (202a-3) arranged on the winding shaft (202a-2).

5. The safety valve according to claim 4, characterized in that: The transmission member (202b) comprises a rotating wheel (202b-1) arranged on the movable shaft (201b), a soft pad (202b-2) arranged on the rotating wheel (202b-1), and a matching plate (202b-3) arranged on the bracket (201a).

6. The safety valve according to claim 5, characterized in that: The positioning assembly (203) comprises a rotating member (203a) arranged on a movable shaft (201b), a limiting member (203b) arranged on the bracket (201a), and an unlocking member (203c) arranged on the limiting member (203b).

7. The safety valve according to claim 6, characterized in that: The rotating member (203a) includes a disk (203a-1) arranged on a movable shaft (201b), and a corresponding block (203a-2) arranged on the disk (203a-1).

8. The safety valve according to claim 7, characterized in that: The limiting member (203b) comprises a fixing rod (203b-1) arranged on the bracket (201a), a fixing plate (203b-2) arranged on the fixing rod (203b-1), a mounting spring (203b-3) arranged on the fixing plate (203b-2), an adapting column (203b-4) arranged on the mounting spring (203b-3), and a moving rod (203b-5) arranged on the adapting column (203b-4).

9. The safety valve according to claim 8, characterized in that: The unlocking member (203c) comprises an embedding rod (203c-1) arranged on a fixing plate (203b-2), a groove (203c-2) arranged on the embedding rod (203c-1), a supporting spring (203c-3) arranged on the groove (203c-2), and a spring block (203c-4) arranged on the supporting spring (203c-3).

10. The safety valve according to claim 9, characterized in that: The locking assembly (204) comprises a column (204a) arranged on a bracket (201a), a piston block (204b) arranged on the column (204a), a piston rod (204c) arranged on the piston block (204b), a suction cup (204d) arranged on the piston rod (204c), and a sealing member (204e) arranged on the bracket (201a).

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