CN211118238U - Buffer tank for pressure test - Google Patents
Buffer tank for pressure test Download PDFInfo
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- CN211118238U CN211118238U CN201922045295.5U CN201922045295U CN211118238U CN 211118238 U CN211118238 U CN 211118238U CN 201922045295 U CN201922045295 U CN 201922045295U CN 211118238 U CN211118238 U CN 211118238U
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- branch pipe
- pressure
- pressure test
- tank body
- pipe
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Abstract
The utility model belongs to the technical field of pressure test, in particular to a buffer tank for pressure test, wherein the tank body of the buffer tank is made of seamless steel pipes, and pipe caps are arranged at the two ends of each seamless steel pipe; the two ends of the tank body are respectively provided with an inlet end branch pipe and an outlet end branch pipe, the inlet end branch pipe is sequentially provided with a gate valve and a check valve inwards, and the outlet end branch pipe is provided with a gate valve; three pressure test branch pipes are arranged at equal intervals above the tank body, and safety valves are arranged on the pressure test branch pipes; a pressure relief branch pipe is arranged below the tank body, and a pressure relief valve is arranged on the pressure relief branch pipe. The buffer tank is high in safety, simple to operate, convenient and fast to use, capable of being reused and has obvious technical advantages and economic value.
Description
Technical Field
The utility model belongs to the technical field of pressure test, specifically be buffer tank for pressure test.
Background
The pressure test is intended to verify the strength and tightness of the pressure-containing member of the pressure vessel. In the test process, whether the pressure container has the pressure-bearing capacity necessary for safe operation under the design pressure is verified by observing whether the pressure-bearing part is obviously deformed or broken. Meanwhile, the tightness of the pressure container is checked by observing whether the joints such as welding seams, flanges and the like have leakage or not.
Since the test pressure of the pressure test is higher than the maximum working pressure, the possibility of the pressure vessel rupturing during the pressure test should be taken into account. The energy released by explosion of gas with the same volume and the same pressure is much larger than that of liquid, so that the damage caused by the rupture of boilers and pressure vessels in a pressure test is reduced, and the liquid is usually used as a test medium. In the test process, the pressure test buffering device is needed to be operated safely because the pressure boosting speed is too high, the pressure overload or the temperature change causes unstable pressure test pressure and overhigh pressure to damage a pressure test body and pressure test equipment, even causes safety accidents.
Disclosure of Invention
To there being the problem that pressure testing pressure is unstable, pressure is too high to damage pressure testing body and pressure testing equipment among the pressure test process, the utility model provides a buffer tank for pressure test.
The utility model discloses a buffer tank for pressure test, which is characterized in that the tank body of the buffer tank is horizontally arranged on a bracket, the tank body is made of seamless steel pipes, and pipe caps are arranged at the two ends of each seamless steel pipe; the two ends of the tank body are respectively provided with an inlet end branch pipe and an outlet end branch pipe, the inlet end branch pipe is sequentially provided with a gate valve and a check valve inwards, and the outlet end branch pipe is provided with a gate valve; three pressure test branch pipes are arranged at equal intervals above the tank body, and safety valves are arranged on the pressure test branch pipes; a pressure relief branch pipe is arranged below the tank body, and a pressure relief valve is arranged on the pressure relief branch pipe; threads are arranged on the inlet end branch pipe, the outlet end branch pipe, the pressure testing branch pipe and the pipe section at the outer end of the pressure relief branch pipe.
The inner ends of the inlet end branch pipe, the outlet end branch pipe, the pressure testing branch pipe and the pressure relief branch pipe are connected with the tank body through socket branch pipe tables.
Furthermore, the pressure test branch pipe is connected with the pressure gauge through an external thread, so that the test pressure can be conveniently tested.
The buffer tank selects the wall thickness of the pipeline and the nominal pressure of the check valve and the safety valve according to the test pressure, and selects the nominal diameter of the check valve and the safety valve according to the specifications of the safety valve and the pressure gauge. In specific practice, safety valves with the specifications of 800psig, 1500psig and 2500psi are respectively selected and used on the pressure test branch pipe.
After the buffer tank is manufactured, all welding seams must be subjected to nondestructive testing, and the tightness of the buffer tank is tested through a hydrostatic test. Before pressure testing, the check pressure of the safety valve is 1.05 times of the test pressure, and the pressure gauge is checked in the valid period; the medium gets into from buffer tank entrance point branch pipe through the force (forcing) pump during the pressure testing, and exit end branch pipe is pressed through high pressure test and is pressed the area and be connected with this body of pressure testing, and pressure testing body highest point installation discharge valve opens discharge valve during the pressurization and closes discharge valve after exhausting this internal air, makes this internal pressure of pressure testing slowly rise to the test pressure that needs reach, and the force (forcing) pump stop work closes entrance point relief valve and carries out the steady voltage, and steady voltage time reaches the back, opens the relief valve, slowly discharge pressure. When the pressure pressurization exceeds the test pressure, the safety valve automatically jumps to quickly protect the equipment or the pipeline to be tested.
The buffer tank integrates a plurality of functions of testing pressure detection, control and regulation, pressure overload protection, prevention of backflow of a pressure testing medium, elimination of water hammer pressure stabilization and unloading in a pressure relief process, reduction of flow velocity unevenness and the like, is a pressure testing buffer device which is high in safety, simple to operate, convenient and fast, can be repeatedly used, and has obvious technical advantages and economic values.
Drawings
FIG. 1 is a schematic structural view of a tank body part of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
The device comprises a gate valve 1, a check valve 2, a safety valve 3 and a pressure relief valve 4.
Detailed Description
Embodiment 1, the utility model discloses be applied to sand FADAHI L I natural gas treatment project pipeline pressure testing, the jar body level of this buffer tank sets up on the support, the jar body adopts 3 cun S-160 seamless steel pipe to make, seamless steel pipe both ends set up the pipe cap, jar body both ends set up entrance point branch pipe and exit end branch pipe respectively, entrance point branch pipe sets up gate valve and check valve inwards in proper order, exit end branch pipe sets up the gate valve, jar body top sets up three pressure testing branch pipes at the equidistance, set up specification 800psig, 1500psig and 2500psi relief valve on the pressure testing branch pipe, jar body bottom sets up a pressure release branch pipe, set up the relief valve on the pressure release branch pipe, all set up the screw thread on entrance point branch pipe, exit end branch pipe, pressure testing branch pipe and the outer end pipe section of pressure release branch pipe, be connected with.
Claims (4)
1. The buffer tank for the pressure test is characterized in that a tank body of the buffer tank is horizontally arranged on a support, the tank body is made of seamless steel pipes, and pipe caps are arranged at two ends of each seamless steel pipe; the two ends of the tank body are respectively provided with an inlet end branch pipe and an outlet end branch pipe, the inlet end branch pipe is sequentially provided with a gate valve and a check valve inwards, and the outlet end branch pipe is provided with a gate valve; three pressure test branch pipes are arranged at equal intervals above the tank body, and safety valves are arranged on the pressure test branch pipes; a pressure relief branch pipe is arranged below the tank body, and a pressure relief valve is arranged on the pressure relief branch pipe; threads are arranged on the inlet end branch pipe, the outlet end branch pipe, the pressure testing branch pipe and the pipe section at the outer end of the pressure relief branch pipe.
2. The surge tank for pressure test as claimed in claim 1, wherein the inner ends of the inlet branch pipe, the outlet branch pipe, the pressure test branch pipe and the pressure relief branch pipe are connected with the tank body through a socket branch pipe table.
3. The surge tank for pressure test as claimed in claim 2, wherein the pressure test branch pipe is connected to the pressure gauge through an external thread.
4. The surge tank for pressure test as claimed in claim 1, wherein the pressure test branch pipe is provided with safety valves of 800psig, 1500psig and 2500 psi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922045295.5U CN211118238U (en) | 2019-11-25 | 2019-11-25 | Buffer tank for pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922045295.5U CN211118238U (en) | 2019-11-25 | 2019-11-25 | Buffer tank for pressure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211118238U true CN211118238U (en) | 2020-07-28 |
Family
ID=71698455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922045295.5U Active CN211118238U (en) | 2019-11-25 | 2019-11-25 | Buffer tank for pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211118238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757571A (en) * | 2021-09-01 | 2021-12-07 | 中国化学工程第三建设有限公司 | Simple buffer tank and application thereof |
-
2019
- 2019-11-25 CN CN201922045295.5U patent/CN211118238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757571A (en) * | 2021-09-01 | 2021-12-07 | 中国化学工程第三建设有限公司 | Simple buffer tank and application thereof |
| CN113757571B (en) * | 2021-09-01 | 2023-08-04 | 中国化学工程第三建设有限公司 | Simple buffer tank and application thereof |
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