CN214952139U - Built-in safety valve calibration stand - Google Patents
Built-in safety valve calibration stand Download PDFInfo
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- CN214952139U CN214952139U CN202121562562.7U CN202121562562U CN214952139U CN 214952139 U CN214952139 U CN 214952139U CN 202121562562 U CN202121562562 U CN 202121562562U CN 214952139 U CN214952139 U CN 214952139U
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Abstract
The utility model discloses a built-in safety valve checking platform, which comprises a checking control part and a built-in safety valve clamping mechanism, the checking control part is arranged in the first box body, the built-in safety valve clamping mechanism is arranged in the second box body, and a high-pressure pipeline is connected between the checking control part and the built-in safety valve clamping mechanism, the checking control part comprises a gas buffer tank, a pressure relief needle valve, a safety checking pressure gauge, a gas buffer pressure gauge, a buffer tank exhaust ball valve, an air inlet ball valve and a pressure boosting needle valve, the gas buffer tank is fixed in the first box body, and a vent pipeline is extended from one end of the gas buffer tank to the outside of the first box body and is fixedly connected with a high-pressure gas source, and the other end of the gas buffer tank extends out of a vent pipeline and is communicated with a built-in safety valve clamping mechanism in the second box body.
Description
Technical Field
The utility model relates to a relief valve technical field, in particular to built-in relief valve calibration stand.
Background
The built-in full-open type spring safety valve is widely applied to train tank cars, automobile tank cars and pressure containers as a safety pressure relief device, the structure of the built-in full-open type spring safety valve is greatly different from that of a common flange type safety valve, a common safety valve check table cannot accurately check the built-in full-open type spring safety valve, and the structure of the conventional common flange type safety valve only can check the safety valve of a single model when checking is carried out due to structural limitation, and replacement and use are not easy to carry out, so that the applicant provides a built-in safety valve check table to solve the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a built-in relief valve calibration stand to solve the problem that proposes among the above-mentioned background art.
The utility model aims at realizing through the following technical scheme: a built-in safety valve calibration stand comprises a calibration control part and a built-in safety valve clamping mechanism, wherein the calibration control part is arranged in a first box body, the built-in safety valve clamping mechanism is arranged in a second box body, and a high-pressure pipeline is connected between the calibration control part and the built-in safety valve clamping mechanism;
the checking control part comprises a gas buffer tank, a pressure relief needle valve, a safety checking pressure gauge, a gas buffer pressure gauge, a buffer tank exhaust ball valve, an air inlet ball valve and a pressure boosting needle valve, wherein the gas buffer tank is fixed in the first box body, a vent pipeline is extended from one end of the gas buffer tank to the outside of the first box body and is fixedly connected with a high-pressure gas source, and a vent pipeline is extended from the other end of the gas buffer tank and is communicated with a built-in safety valve clamping mechanism in the second box body;
the built-in safety valve clamping mechanism comprises a second box body, a sealing disc, a pressing plate, a pressure-bearing checking cavity, a high-pressure pipeline and a built-in safety valve, wherein the second box body is hollow, the pressure-bearing checking cavity is formed in the second box body in an embedded mode, and the sealing disc is connected to the pressure-bearing checking cavity in a pressed mode.
Further, a gas buffer pressure gauge and a buffer tank exhaust ball valve are arranged on the gas buffer tank, and safety valves are arranged among pipelines connected with the gas buffer pressure gauge, the buffer tank exhaust ball valve and the gas buffer tank.
Furthermore, a bypass pipeline is extended from one side of the gas buffer tank close to the built-in safety valve clamping mechanism and communicated with a high-pressure pipeline;
a safety check pressure gauge is fixedly arranged at the upper end of the bypass pipeline, and the safety check pressure gauges are symmetrically arranged;
a check pressure gauge needle valve is fixedly arranged below the safety check pressure gauge positioned on the bypass pipeline;
and a pressure relief needle valve is fixedly arranged at the tail end of the bypass pipeline.
Further, an air inlet ball valve is fixedly arranged on a high-pressure pipeline between a high-pressure air source and the air buffer tank in the first box body;
and a pressure-boosting needle valve is fixedly arranged on a high-pressure pipeline of the gas buffer tank on the side opposite to the gas inlet ball valve.
Furthermore, the pressure-bearing checking cavity is hollow, and a first sealing groove is fixedly formed in the edge position of the upper end face of the pressure-bearing checking cavity.
Further, open on the sealed dish up end has first seal groove, and it has the fixed orifices to open on the sealed dish, and the grafting is installed and is built-in relief valve in the fixed orifices, built-in relief valve extends to the pressure-bearing check-up intracavity.
Furthermore, fixing bolts are uniformly distributed on the upper end face of the pressure-bearing checking cavity along the circumference of the built-in safety valve;
and a pressure plate is sleeved on the fixing bolt and is in pressure joint with the circumferential edge of the built-in safety valve.
Further, the high-pressure pipeline extends into the second box body and is communicated with the bottom of the pressure-bearing checking cavity.
Furthermore, the upper end of the pressure-bearing checking cavity is opened, and the pressure-bearing checking cavity and the second box body are fixed into an integral structure through welding.
Compared with the prior art, the beneficial effects of the utility model are that: the calibration equipment aims at the structural design of the built-in safety valves, can calibrate the built-in safety valves of different models, and the sealing disc is provided with the built-in safety valves of various sizes and different specifications.
Drawings
FIG. 1 is a schematic view of the overall framework of the present invention;
FIG. 2 is a top view of the clamping mechanism of the built-in safety valve of the present invention;
fig. 3 is a schematic sectional view of the clamping mechanism of the safety valve of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
1-3, the built-in safety valve checking platform comprises a checking control part 1 and a built-in safety valve clamping mechanism 2, wherein the checking control part 1 is arranged in a first box body 21, the built-in safety valve clamping mechanism 2 is arranged in a second box body 22, and a high-pressure pipeline 26 is connected between the checking control part 1 and the built-in safety valve clamping mechanism 2;
the checking control part 1 comprises a gas buffer tank 4, a pressure relief needle valve 5, a safety checking pressure gauge 6, a gas buffer pressure gauge 7, a buffer tank exhaust ball valve 8, an air inlet ball valve 9 and a pressure boosting needle valve 10, wherein the gas buffer tank 4 is fixed in a first box body 21, a vent pipeline is extended from one end of the gas buffer tank 4 to the outside of the first box body 21 and is fixedly connected with a high-pressure gas source 3, and a vent pipeline is extended from the other end of the gas buffer tank 4 and is communicated with a built-in safety valve clamping mechanism 2 in a second box body 22;
built-in relief valve fixture 2 includes second box 22, sealed dish 23, clamp plate 24, pressure-bearing check-up chamber 25, high-pressure line 26, built-in relief valve 28, the inside cavity of second box 22 is located and inlays in the second box 22 and has pressure-bearing check-up chamber 25, the last crimping of pressure-bearing check-up chamber 25 has sealed dish 23.
In order to guarantee the normal work of gas buffer tank 4, the utility model discloses further preferred technical scheme does, be provided with gas buffer pressure table 7, buffer tank exhaust ball valve 8 on the gas buffer tank 4, be equipped with the relief valve between the pipeline that gas buffer pressure table 7, buffer tank exhaust ball valve 8 and gas buffer tank 4 are connected.
A bypass pipeline 27 is extended from one side of the gas buffer tank 4 close to the built-in safety valve clamping mechanism 2 and communicated with a high-pressure pipeline 26;
a safety check pressure gauge 6 is fixedly arranged at the upper end of the bypass pipeline 27, and the safety check pressure gauges 6 are symmetrically arranged;
a check pressure gauge needle valve is fixedly arranged below the safety check pressure gauge 6 on the bypass pipeline 27;
and a pressure relief needle valve 5 is fixedly arranged at the tail end of the bypass pipeline 27.
In a use state, in order to control the pressure formed by the air intake of the high-pressure air source, the utility model adopts the further preferable technical scheme that an air intake ball valve 9 is fixedly arranged on a high-pressure pipeline 26 positioned between the high-pressure air source 3 and the gas buffer tank 4 in the first box body 21;
a pressure-increasing needle valve 10 is fixedly arranged on a high-pressure pipeline 26 of the gas buffer tank 4 on the side opposite to the gas inlet ball valve 9.
In order to guarantee the sealing performance of pressure-bearing check chamber 25 and sealed dish, the utility model discloses further preferred technical scheme does, the inside cavity in pressure-bearing check chamber 25, and be located fixed division of end edge position has first seal groove in pressure-bearing check chamber 25.
In order to guarantee under the user state, guarantee relief valve import sealing performance, the utility model discloses further preferred technical scheme does, it has first seal groove to open on the sealed dish 23 up end, and it has fixed pore to open on the sealed dish 23, and the interpolation is installed and is built-in relief valve 28 in the fixed pore, built-in relief valve 28 extends to in the pressure-bearing check-up chamber 25.
In order to facilitate the fixation of the built-in safety valve 28 through a pressure plate during use, a further preferred technical scheme of the novel pressure-bearing calibration chamber is that fixing bolts are uniformly distributed on the upper end surface of the pressure-bearing calibration chamber 25 along the circumference of the built-in safety valve 28;
the fixed bolt is sleeved with a pressure plate 24, the pressure plate 24 is fixed through a nut to tightly press the built-in safety valve 28, and the pressure plate 24 is pressed and connected to the circumferential edge of the built-in safety valve 28.
The gas buffer tank is filled with verification medium gas, and a built-in safety valve 28 is tested, and the novel and further preferable technical scheme is that the high-pressure pipeline 26 extends into the second box body 22 and is communicated with the bottom of the pressure-bearing verification cavity 25.
In order to ensure the sealing performance between the pressure-bearing checking cavity 25 and the second box 22, a further preferred technical scheme of the present invention is that the upper end of the pressure-bearing checking cavity 25 is open, and the pressure-bearing checking cavity 25 and the second box 22 are fixed into an integral structure by welding.
The novel device consists of two parts: the verification control part: and controlling the safety valve checking process to provide checking air pressure for the safety valve clamping mechanism.
Built-in relief valve fixture: the verified built-in safety valve is clamped, and the air inlet end of the verified safety valve is sealed.
The pressure-bearing checking container can accommodate the air inlet end structure of the built-in safety valve, and the residual space buffers the air pressure input by the checking control part.
The sealing disc has various sizes and can be adapted to built-in safety valves with different specifications.
This novel equipment working method:
1. the sealing disc 23 which is selected to be matched with the air inlet end of the checked safety valve is installed on the pressure-bearing checking container 25, wherein sealing ring installation grooves are formed in the pressure-bearing checking container 25 and the sealing disc 23, and sealing rings are installed in the installation grooves.
2. Placing the safety valve 28 to be verified on the clamping mechanism 2 to ensure the inlet sealing surface of the safety valve and the sealing disc 23; the seal between the sealing disc 23 and the pressure-bearing verification vessel 25.
And a safety valve pressure plate 24 is arranged to tightly press a checked safety valve 28, so that the safety valve is stably fixed.
3. And opening the air inlet ball valve 9, filling the gas buffer tank 4 with verification medium gas, and closing the air inlet ball valve 9 when the pressure in the buffer tank 4 reaches the pressure required by verification.
4. And opening a needle valve of the checking pressure gauge, then slowly opening a pressure boosting needle valve to output checking media to the clamping mechanism, and controlling the pressure boosting needle valve 10 to keep slow and stable pressure boosting. And observing a safety valve check pressure gauge 6, wherein when the checked safety valve is opened, the reading displayed by the pressure gauge is the actual setting pressure of the current checked safety valve. And comparing the pressure reading with the required setting pressure, and judging whether the safety valve is qualified. And after the safety valve is opened, the pressure-boosting needle valve is closed, the pressure-releasing needle valve is opened, and the pressure-releasing needle valve 5 is closed after the reading of the pressure gauge returns to zero.
5. And (4) repeating the boosting operation of the step (4) for second verification, and completing the verification of the safety valve after the verification qualified for the third time is completed.
6. The relief valve pressure plate 24 is opened and the verified relief valve 28 is removed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a built-in relief valve check table which characterized in that: the calibration table comprises a calibration control part (1) and a built-in safety valve clamping mechanism (2), wherein the calibration control part (1) is arranged in a first box body (21), the built-in safety valve clamping mechanism (2) is arranged in a second box body (22), and a high-pressure pipeline (26) is connected between the calibration control part (1) and the built-in safety valve clamping mechanism (2);
the checking control part (1) comprises a gas buffer tank (4), a pressure relief needle valve (5), a safety checking pressure gauge (6), a gas buffer pressure gauge (7), a buffer tank exhaust ball valve (8), an air inlet ball valve (9) and a pressure boosting needle valve (10), wherein the gas buffer tank (4) is fixed in a first box body (21), one end of the gas buffer tank (4) is extended to form a vent pipeline to the outside of the first box body (21) and is fixedly connected with a high-pressure gas source (3), and the other end of the gas buffer tank (4) is extended to form a vent pipeline which is communicated with a built-in safety valve clamping mechanism (2) in a second box body (22);
built-in relief valve fixture (2) include second box (22), sealed dish (23), clamp plate (24), pressure-bearing check-up chamber (25), high-pressure line (26), built-in relief valve (28), second box (22) inside cavity is located and inlays in second box (22) pressure-bearing check-up chamber (25), the pressure-bearing check-up chamber (25) go up the crimping and have sealed dish (23).
2. The built-in safety valve verification station according to claim 1, wherein: the gas buffer tank is characterized in that a gas buffer pressure gauge (7) and a buffer tank exhaust ball valve (8) are arranged on the gas buffer tank (4), and safety valves are arranged between pipelines connected with the gas buffer pressure gauge (7), the buffer tank exhaust ball valve (8) and the gas buffer tank (4).
3. The built-in safety valve verification station according to claim 1, wherein: a bypass pipeline (27) is extended from one side of the gas buffer tank (4) close to the built-in safety valve clamping mechanism (2) and is communicated with a high-pressure pipeline (26);
the safety check pressure gauge (6) is fixedly arranged at the upper end of the bypass pipeline (27), and the safety check pressure gauge (6) is symmetrically arranged;
a check pressure gauge needle valve is fixedly arranged below the safety check pressure gauge (6) positioned on the bypass pipeline (27);
and a pressure relief needle valve (5) is fixedly arranged at the tail end of the bypass pipeline (27).
4. The built-in safety valve verification station according to claim 1, wherein: an air inlet ball valve (9) is fixedly arranged on a high-pressure pipeline (26) positioned between the high-pressure air source (3) and the gas buffer tank (4) in the first box body (21);
a pressure-boosting needle valve (10) is fixedly arranged on a high-pressure pipeline (26) of the gas buffer tank (4) at the side opposite to the air inlet ball valve (9).
5. The built-in safety valve verification station according to claim 1, wherein: the pressure-bearing checking cavity (25) is hollow, and a first sealing groove is fixedly formed in the edge position of the upper end face of the pressure-bearing checking cavity (25).
6. The built-in safety valve verification station according to claim 1, wherein: open on sealed dish (23) up end has first seal groove, and it has fixed pore to open on sealed dish (23), and built-in relief valve (28) are installed in pegging graft in the fixed pore, built-in relief valve (28) extend to in the pressure-bearing check-up chamber (25).
7. The built-in safety valve verification station according to claim 1, wherein: fixing bolts are uniformly distributed on the upper end face of the pressure-bearing checking cavity (25) along the circumference of the built-in safety valve (28);
and a pressure plate (24) is sleeved on the fixing bolt, and the pressure plate (24) is in pressure joint with the circumferential edge of the built-in safety valve (28).
8. The built-in safety valve verification station according to claim 1, wherein: the high-pressure pipeline (26) extends into the second box body (22) and is communicated with the bottom of the pressure-bearing checking cavity (25).
9. The built-in safety valve verification station according to claim 1, wherein: the upper end of the pressure-bearing checking cavity (25) is opened, and the pressure-bearing checking cavity (25) and the second box body (22) are fixed into an integral structure through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121562562.7U CN214952139U (en) | 2021-07-09 | 2021-07-09 | Built-in safety valve calibration stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121562562.7U CN214952139U (en) | 2021-07-09 | 2021-07-09 | Built-in safety valve calibration stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214952139U true CN214952139U (en) | 2021-11-30 |
Family
ID=79073930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121562562.7U Active CN214952139U (en) | 2021-07-09 | 2021-07-09 | Built-in safety valve calibration stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214952139U (en) |
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2021
- 2021-07-09 CN CN202121562562.7U patent/CN214952139U/en active Active
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