Safety valve detector

Abstract

The utility model relates to the technical field of safety valve detection, in particular to a safety valve detector which comprises an air pump, the output end of the air pump is detachably connected with an air inlet pipe, the air inlet pipe is fixedly connected with a first gas flow meter, and the other end of the air inlet pipe is fixedly connected with a safety valve. One side of the safety valve is detachably connected with a gas outlet pipe, and the gas outlet pipe is fixedly connected with a pressure meter, a valve and a gas flow meter II; according to the utility model, the air pump, the air inlet pipe and the air outlet pipe are arranged and are detachably connected with the safety valve through bolts or threads, so that the air pump, the air inlet pipe and the air outlet pipe are convenient to carry, can be quickly assembled and are convenient to detect the safety valve; by arranging the first gas flow meter, the second gas flow meter, the valve and the pressure meter, whether the safety valve leaks gas or not can be detected, whether a spring in the safety valve goes wrong or not can be detected, detection is more accurate, the situation of the safety valve can be judged by workers conveniently, and the safety valve can be overhauled conveniently.

Description

Technical Field

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

[0002] Safety valve is an automatic gas flow meter. Its function is to automatically open and discharge the medium when the pressure in the equipment or pipeline exceeds the specified value to prevent the pressure from continuing to rise, thereby protecting the safe operation of the equipment or pipeline. Safety valve belongs to the automatic valve category, mainly used in equipment such as boilers, pressure vessels and pipelines, to control the pressure not to exceed the specified value, and plays an important protective role in personal safety and equipment operation.

[0003] The opening and closing parts of the safety valve are in a normally closed state under the action of external forces. When the medium pressure in the equipment or pipeline exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. The discharge capacity of the safety valve must be greater than or equal to the safe discharge volume of the equipment or pipeline to ensure that the medium can be discharged in time under overpressure conditions to prevent the equipment or pipeline from being damaged due to overpressure.

[0004] After the safety valve has been used for a period of time, scaling, blockage or air leakage may occur inside it. Therefore, after the safety valve has been used for a period of time, it needs to be inspected to determine whether there is any problem inside it and whether it can continue to be used.

[0005] At present, the common safety valve detectors on the market often have complex structures and can only detect whether the safety valve is leaking, but cannot detect whether the spring in the safety valve is aging.

[0006] Therefore, the present application provides a safety valve detector to overcome the defects of the prior art. Utility Model Content

[0007] The utility model aims to solve the problem that the existing safety valve detector is often complex in structure and can only detect whether the safety valve is leaking but cannot detect whether the spring in the safety valve is aging.

[0008] The technical solution of the utility model provides a safety valve detector, including an air pump, the output end of the air pump is detachably connected to an air inlet pipe, a gas flow meter is fixedly connected to the air inlet pipe, the other end of the air inlet pipe is fixedly connected to a safety valve, one side of the safety valve is detachably connected to an air outlet pipe, a pressure gauge, a valve, and a gas flow meter are fixedly connected to the air outlet pipe.

[0009] As a preferred technical solution, the safety valve includes a valve body, the bottom of the valve body is detachably connected to the top of the air inlet pipe, the top is detachably connected to a valve cover, and one side of the valve body is detachably connected to one end of the air outlet pipe.

[0010] As a preferred technical solution, the valve body is hollow and a valve seat is clamped inside it, the top of the valve seat is slidably connected to a recoil piece, a part of the recoil piece is located in the valve body, and the other part is located in the valve cover, a valve flap is provided at the bottom of the recoil piece, the bottom of the valve flap is in contact with the top of the valve seat, an air outlet is fixedly connected to one side of the valve body, and an end of the air outlet away from the valve body is detachably connected to one end of an air outlet pipe.

[0011] As a preferred technical solution, the valve cover is hollow, and the lower end of the inner side wall of the valve cover is provided with two relatively arranged lower slide grooves, and the valve cover is slidably connected to the recoil piece through the lower slide grooves, and the upper end of the inner side wall of the valve cover is provided with two relatively arranged upper slide grooves, and the two upper slide grooves are slidably connected with pressure plates, and the center position of the pressure plate is rotatably connected with a screw, the screw passes through the top of the valve cover and is threadedly connected thereto, the top of the screw is fixedly connected with a turning handle, and the bottom of the screw is fixedly connected with an upper clamping plate and a lower clamping plate, the bottom of the upper clamping plate contacts the top of the pressure plate, and the top of the lower clamping plate contacts the bottom of the pressure plate, and a spring is installed in the valve cover, one end of the spring is fixedly connected to the top of the recoil piece, and the other end is fixedly connected to the bottom of the pressure plate.

[0012] The beneficial effects of a safety valve detector provided by the utility model are:

[0013] The utility model is provided with an air pump, an air inlet pipe and an air outlet pipe, and the three and the safety valve are detachably connected by bolts or threads, which is not only easy to carry, but also can be quickly assembled and convenient for testing the safety valve;

[0014] By setting up gas flow meter 1, gas flow meter 2, valves and pressure gauges, it is possible to detect not only whether the safety valve is leaking, but also whether there is a problem with the spring in the safety valve. The inspection is more accurate, which is beneficial for the staff to judge the condition of the safety valve and facilitate the maintenance of the safety valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the first embodiment of the utility model;

[0016] Figure 2 It is a front view of the first embodiment of the utility model;

[0017] Figure 3 It is a three-dimensional cross-sectional view of the first embodiment of the utility model;

[0018] Figure 4 It is a front cross-sectional view of the first embodiment of the utility model.

[0019] Among them, 1. air pump; 2. air inlet pipe; 21. gas flow meter 1; 3. safety valve; 31. valve body; 32. valve seat; 33. recoil piece; 34. valve disc; 35. air outlet; 36. valve cover; 37. lower slide groove; 38. upper slide groove; 39. pressure plate; 310. screw; 311. handle; 312. upper clamping plate; 313. lower clamping plate; 314. spring; 4. air outlet pipe; 41. pressure gauge; 42. valve; 43. gas flow meter 2. DETAILED DESCRIPTION

[0020] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below in conjunction with specific diagrams; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] As attached Figure 1 To Attachment Figure 4 As shown: a safety valve detector, comprising an air pump 1, the output end of the air pump 1 is upward and threadedly connected to an air inlet pipe 2, one side of the air inlet pipe 2 is fixedly connected to a gas flow meter 21, the gas flow meter 21 is used to measure the amount of gas output by the air pump 1, the end of the air inlet pipe 2 away from the air pump 1 is bolted to a safety valve 3, one side of the safety valve 3 is detachably connected to an outlet pipe 4, the outlet pipe 4 is fixedly connected to a pressure gauge 41, a valve 42, and a gas flow meter 2 43, the pressure gauge 41 is closer to the safety valve 3 than the gas flow meter 2 43, the valve 42 is located between the pressure gauge 41 and the gas flow meter 2 43, the pressure gauge 41 is used to measure the gas pressure in the outlet pipe 4, the valve 42 is used to control the gas flowing out of the outlet pipe 4, and the gas flow meter 2 43 is used to measure the amount of gas flowing out of the outlet pipe 4.

[0023] As attached Figure 2 To Attachment Figure 4 As shown: the safety valve 3 includes a valve body 31, the bottom of the valve body 31 is connected to the top of the intake pipe 2 by bolts, the top bolts of the valve body 31 are provided with a valve cover 36, one side of the valve body 31 is connected to one end of the outlet pipe 4 by bolts, and sealing gaskets are provided at the connection of each component to improve the sealing degree of the device and prevent gas leakage.

[0024] As attached Figure 2 To Attachment Figure 4As shown: the valve body 31 is hollow and a valve seat 32 is clamped inside it. The structure of the valve seat 32 is a hollow trumpet shape with a larger bottom and a smaller top. The gas output by the air pump 1 enters the valve seat 32 through the air inlet pipe 2. The top of the valve seat 32 is slidably connected with a recoil piece 33. The recoil piece 33 is similar to an I-shaped one and has a groove at the bottom. The groove at the bottom of the recoil piece 33 is sleeved on the top outer side of the valve seat 32. The bottom of the recoil piece 33 is located in the valve body 31, the middle part passes through the top cover of the valve body 31 and is slidably connected thereto, and the top is located in the valve cover 36. A valve flap 34 is fixedly connected to the groove at the bottom of the recoil piece 33. When the valve seat 32 is in a non-exhaust state, the bottom of the valve flap 34 contacts the top of the valve seat 32. An air outlet 35 is welded on one side of the valve body 31, and the end of the air outlet 35 away from the valve body 31 is detachably connected to one end of the air outlet pipe 4 by bolts.

[0025] As attached Figure 2 To Attachment Figure 4 As shown in the figure: the valve cover 36 is hollow, and the lower end of the inner wall of the valve cover 36 is provided with two relatively arranged lower grooves 37, and the valve cover 36 is slidably connected with the recoil member 33 through the lower grooves 37, and the upper end of the inner wall of the valve cover 36 is provided with two relatively arranged upper grooves 38, and the two upper grooves 38 are slidably connected with a pressure plate 39, and the center position of the pressure plate 39 is rotatably connected with a screw rod 310, and the screw rod 310 passes through the top wall of the valve cover 36 and is threadedly connected thereto, and the top of the screw rod 310 is fixedly connected with a handle 311, and the bottom of the screw rod 310 is fixedly connected with a handle 311. An upper clamping plate 312 and a lower clamping plate 313 are connected, the bottom of the upper clamping plate 312 contacts the top of the pressure plate 39, and the top of the lower clamping plate 313 contacts the bottom of the pressure plate 39. The turning handle 311 drives the screw 310 to rotate, thereby driving the pressure plate 39 to move up and down along the two upper slide grooves 38 in the valve cover 36. A spring 314 is installed in the valve cover 36, one end of the spring 314 is fixedly connected to the top of the recoil member 33, and the other end is fixedly connected to the bottom of the pressure plate 39. When the recoil member 33 and the pressure plate 39 move, the spring 314 will be deformed.

[0026] Working method: connect the air pump 1, the air inlet pipe 2, the safety valve 3 and the air outlet pipe 4 and ensure that the connection is well sealed and there is no gas leakage, close the valve 42, start the air pump 1, fill a certain amount of gas into the safety valve 3, and measure a specific value through the gas metering valve 21, record it as A, wait for a certain time, record the value displayed in the pressure gauge 41, record it as B1, wait for a certain time again, record the value displayed in the pressure gauge 41, record it as B2, open the valve 42, let the gas be discharged through the gas flow meter 43, and record the value displayed by the gas flow meter 43, record it as C, measure the exposed length of the screw 310, and record it as H, after multiple experiments, discard the first experimental data and the data that are obviously different from other groups of data, take the average value of the remaining experimental data, and compare it with the normal data;

[0027] Under the condition that there is no leakage at the connection between the air pump 1, the air inlet pipe 2, the safety valve 3 and the air outlet pipe 4, and the valve 42 is not completely closed,

[0028] Compare the experimental results with the normal data under the same conditions of A and H:

[0029] If B1, B2 and C are the same as the normal values ​​or within the error range, it means that the safety valve 3 is normal.

[0030] If B1 is not equal to B2, and the difference between the two exceeds the normal error range, it means that there may be cracks in the valve body 31.

[0031] If B1, B2 and C are greater than normal values, it means that the valve seat 32 may be cracked or there may be dirt inside the safety valve 3 or the elastic force of the spring 314 is reduced.

[0032] If B1, B2 and C are smaller than normal values, it means that the spring 314 may be aged and difficult to compress;

[0033] If an abnormality occurs, the exposed length of the screw 310 can be adjusted, and the test can be repeated according to the above experimental method, and the result can be compared with the normal data under the same conditions of A and H. If the abnormality still occurs and is the same as the last time, it is confirmed that there is a problem with the safety valve 3 and it should be replaced or repaired. There may be an experimental error or there may be multiple problems with the safety valve 3, which need to be re-verified.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should fall within the technical scope of the present invention.

Claims

1. A safety valve detector, characterized in that: The invention comprises an air pump (1), wherein the output end of the air pump (1) is detachably connected to an air inlet pipe (2), a gas flow meter (21) is fixedly connected to the air inlet pipe (2), the other end of the air inlet pipe (2) is detachably connected to a safety valve (3), one side of the safety valve (3) is detachably connected to an air outlet pipe (4), and a pressure gauge (41), a valve (42), and a gas flow meter (43) are fixedly connected to the air outlet pipe (4).

2. A safety valve detector according to claim 1, characterized in that: The safety valve (3) comprises a valve body (31), the bottom of the valve body (31) is detachably connected to the top of the air inlet pipe (2), the top of the valve body (31) is detachably connected to a valve cover (36), and one side of the valve body (31) is detachably connected to one end of the air outlet pipe (4).

3. A safety valve detector according to claim 2, characterized in that: The valve body (31) is hollow and has a valve seat (32) clamped therein. A recoil piece (33) is slidably connected to the top of the valve seat (32). A portion of the recoil piece (33) is located in the valve body (31) and another portion is located in the valve cover (36). A valve flap (34) is provided at the bottom of the recoil piece (33). The bottom of the valve flap (34) is in contact with the top of the valve seat (32). An air outlet (35) is fixedly connected to one side of the valve body (31). An end of the air outlet (35) away from the valve body (31) is detachably connected to one end of an air outlet pipe (4).

4. A safety valve detector according to claim 3, characterized in that: The valve cover (36) is hollow, and the lower end of the inner side wall of the valve cover (36) is provided with two oppositely arranged lower slide grooves (37), and the valve cover (36) is slidably connected to the recoil member (33) through the lower slide grooves (37). The upper end of the inner side wall of the valve cover (36) is provided with two oppositely arranged upper slide grooves (38), and a pressure plate (39) is slidably connected in the two upper slide grooves (38). The center position of the pressure plate (39) is rotatably connected with a screw rod (310), and the screw rod (310) passes through the top of the valve cover (36) and is threadedly connected thereto. The top of the screw rod (310) is fixedly connected to a rotating handle (311), the bottom of the screw rod (310) is fixedly connected to an upper clamping plate (312) and a lower clamping plate (313), the bottom of the upper clamping plate (312) is in contact with the top of the pressure plate (39), the top of the lower clamping plate (313) is in contact with the bottom of the pressure plate (39), and a spring (314) is installed in the valve cover (36), one end of the spring (314) is fixedly connected to the top of the recoil member (33), and the other end is fixedly connected to the bottom of the pressure plate (39).

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