CN219434265U - Pressure transmission test device - Google Patents
Pressure transmission test device Download PDFInfo
- Publication number
- CN219434265U CN219434265U CN202320245363.6U CN202320245363U CN219434265U CN 219434265 U CN219434265 U CN 219434265U CN 202320245363 U CN202320245363 U CN 202320245363U CN 219434265 U CN219434265 U CN 219434265U
- Authority
- CN
- China
- Prior art keywords
- pressure
- conducting
- pipe
- joint
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure transmission test device, which is used for testing a pressure measuring instrument on site, and comprises: the pressure generating assembly, the first pressure conducting assembly, the four-way expansion joint, the second pressure conducting assembly and the pressure conducting joint, wherein the four-way expansion joint is connected to the pressure generating assembly through the first pressure conducting assembly, and the pressure conducting joint is connected to the four-way expansion joint through the second pressure conducting assembly; the pressure generating assembly is used for simulating actual production working pressure and conducting the working pressure to the pressure conducting joint through the first pressure conducting assembly, the four-way expansion joint and the second pressure conducting assembly in sequence, and the pressure conducting joint is used for applying the working pressure to a pressure measuring instrument installed on a production site so as to test the pressure measuring instrument.
Description
Technical Field
The utility model belongs to the technical field of thermal power generation pressure transmission, and particularly relates to a pressure transmission test device.
Background
Thermal power generation is a main power generation mode in China, and is used for converting heat energy of fuel into electric energy and then supplying power outwards, and mainly comprises a fuel system, a combustion system, a steam-water system, an electric system and a control system. In the production process of the field, the production system can transmit pressure type value, the production process pressure type value transmitting equipment is a pressure measuring instrument, in the power plant unit equipment, the pressure measuring instrument is generally installed on the field after verification in a laboratory, and is directly put into use after being installed on the field, the pressure transmission test is not carried out on the field, the linkage of related equipment or a process system after the process control parameters of the field equipment exceed the safe and effective values cannot be verified, and the actual situation of the field alarm and the protection action values cannot be simulated.
Disclosure of Invention
In view of the defects existing in the prior art, the utility model provides a pressure transmission test device to solve the problem of how to perform pressure transmission experiments on a site pressure measuring instrument in thermal power generation production.
In order to solve the above problems, the present utility model provides a pressure transmission test apparatus for testing a pressure measuring instrument in the field, the pressure transmission test apparatus comprising: the pressure generating assembly, the first pressure conduction assembly, the four-way expansion joint, the second pressure conduction assembly and the pressure conduction joint, wherein the four-way expansion joint is connected to the pressure generating assembly through the first pressure conduction assembly, and the pressure conduction joint is connected to the four-way expansion joint through the second pressure conduction assembly.
The pressure generating assembly is used for simulating actual production working pressure and conducting the working pressure to the pressure conducting joint through the first pressure conducting assembly, the four-way expansion joint and the second pressure conducting assembly in sequence, and the pressure conducting joint is used for applying the working pressure to a pressure measuring instrument installed on a production site so as to test the pressure measuring instrument.
Preferably, the four-way expansion joint is provided with four connecting columns, and threads are arranged outside the connecting columns; four through holes in the same direction as the four connecting columns are respectively arranged in the four-way expansion joint, and can allow gas to flow in four directions in the four-way expansion joint; one of the through holes is used as an exhaust adjusting hole, and a pressure adjusting screw is arranged on the exhaust adjusting hole.
Preferably, the first pressure conduction assembly comprises a first pressure conduction pipe and a second pressure conduction pipe, a first end of the first pressure conduction pipe is connected with the pressure generation assembly, a second end of the first pressure conduction pipe is connected with a first end of the second pressure conduction pipe, a first nut is sleeved on the second pressure conduction pipe, and the second pressure conduction pipe is connected to one of the connecting columns of the four-way expansion joint through the first nut, so that a second end of the second pressure conduction pipe is communicated to the four-way expansion joint.
Preferably, the second pressure conduction assembly comprises a third pressure conduction pipe, a fourth pressure conduction pipe and a fifth pressure conduction pipe, wherein the third pressure conduction pipe is sleeved with a second nut, and the fifth pressure conduction pipe is sleeved with a third nut.
The third pressure conducting pipe is connected to the other connecting column of the four-way expansion joint through the second nut, so that the first end of the third pressure conducting pipe is communicated to the four-way expansion joint; the second end of the third pressure conducting pipe is connected with the first end of the fourth pressure conducting pipe, and the second end of the fourth pressure conducting pipe is connected with the first end of the fifth pressure conducting pipe; the fifth pressure conducting pipe is connected to the pressure conducting joint through the third nut such that the second end of the fifth pressure conducting pipe is communicated to the pressure conducting joint.
Preferably, a connection interface position between the second pressure conducting pipe and one of the connection posts, a connection interface position between the third pressure conducting pipe and the other of the connection posts, and a connection interface position between the fifth pressure conducting pipe and the pressure conducting joint are respectively provided with a sealing gasket.
Preferably, the pressure conduction joint comprises a first bolt section, a conical connecting section, a second bolt section and a conical joint which are fixedly connected in sequence.
Wherein the third nut is connected to the first bolt segment such that the second end of the fifth pressure conduit communicates to the pressure conducting nipple for connection to a pressure measuring instrument installed at a production site.
Preferably, the pressure generating component is a booster pump.
The embodiment of the utility model provides a pressure transmission test device, which comprises: the system comprises a pressure generating component, a first pressure conducting component, a four-way expansion joint, a second pressure conducting component and a pressure conducting joint, wherein the pressure generating component is used for simulating actual production working pressure, the working pressure is conducted to the pressure conducting joint through the first pressure conducting component, the four-way expansion joint and the second pressure conducting component in sequence, the pressure conducting joint is used for applying the working pressure to a pressure measuring instrument installed on a production site to test the pressure measuring instrument, the pressure measuring instrument on the site triggers a production system on the site according to the received simulated pressure, and related equipment can be linked after the process control parameters of field equipment are verified to exceed safe and effective values, so that the system simulates the actual conditions of on-site alarm and protection action values.
Drawings
FIG. 1 is a schematic diagram of a pressure transmission test apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a pressure conducting joint according to an embodiment of the present utility model;
fig. 3 is an assembly diagram of a pressure transmission test apparatus according to an embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the drawings and described in accordance with the drawings are merely exemplary and the utility model is not limited to these embodiments.
It should be noted here that, in order to avoid obscuring the present utility model due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details not greatly related to the present utility model are omitted.
Fig. 1 is a schematic structural diagram of a pressure transmission test device according to an embodiment of the present utility model, as shown in fig. 1, where the pressure transmission test device includes: pressure generating component 1, first pressure conduction component 2, cross extension joint 3, second pressure conduction component 4 and pressure conduction joint 5, cross extension joint 3 passes through first pressure conduction component 2 is connected to pressure generating component 1, pressure conduction joint 5 passes through second pressure conduction component 4 is connected to cross extension joint 3.
The pressure generating assembly 1 is used for simulating actual production working pressure, the working pressure is conducted to the pressure conducting connector 5 sequentially through the first pressure conducting assembly 2, the four-way expansion connector 3 and the second pressure conducting assembly 4, the pressure conducting connector 5 is used for applying the working pressure to a pressure measuring instrument installed on a production site to test the pressure measuring instrument, the pressure measuring instrument on the site triggers a production system on the site according to the received simulated pressure, and can be linked with related equipment after verifying that the process control parameters of the field equipment exceed safe and effective values, so that the system simulates the actual conditions of the site alarm and protection action values.
The pressure transmission test device provided by the embodiment can carry out a pressure transmission test on a site pressure measuring instrument in thermal power generation production, trigger a site production system, verify that the process control parameters of the site equipment exceed safe and effective values, then link related equipment, and detect the leakage of a site pressure bearing pipeline and a part.
In a preferred solution, as shown in fig. 1, the four-way expansion joint 3 is provided with four connecting columns 31, and threads 310 are provided outside the connecting columns 31; four through holes 32 which are in the same direction as the four connecting columns 31 are respectively arranged in the four-way expansion joint 3, and the through holes 32 can allow gas to flow in four directions in the four-way expansion joint 3; one of the through holes 32 serves as an exhaust adjusting hole on which a pressure adjusting screw 33 is mounted.
Specifically, as shown in fig. 1, the four through holes 32 inside the four-way expansion joint 3 have larger diameters at the portions adjacent to the end faces of the connecting posts 31 than at other portions, so that the pressure-transmitting assembly can be easily installed.
Specifically, as shown in fig. 1, the pressure generating component 1 simulates actual production working pressure and conducts the working pressure to the four-way expansion joint 3 through the first pressure conducting component 2, and the four-way expansion joint 3 is provided with four connecting columns 31, so that the pressure generating component is suitable for conducting pressure in a connection mode of 'two three or four three', is convenient to use on a plurality of devices needing to provide alarm locking, and is efficient and convenient.
As shown in fig. 1, in this example, the pressure is conducted by adopting a connection mode of "three-out-of-two", and two connection columns are used for conducting the pressure, so that one of the connection columns is plugged, and the remaining connection column is used for exhaust and is mainly used for performing a depressurization test. Specifically, the exhaust gas adjusting hole on the connection post serving as exhaust gas is provided as a tapered exhaust hole, and the pressure drop rate and the pressure magnitude can be adjusted according to the through tapered section.
In a preferred embodiment, the pressure generating component 1 is a booster pump.
In a preferred embodiment, as shown in fig. 1 and 3, the first pressure conduction assembly 2 includes a first pressure conduction pipe 21 and a second pressure conduction pipe 22, a first end of the first pressure conduction pipe 21 is connected to the pressure generation assembly 1, a second end of the first pressure conduction pipe 21 is connected to a first end of the second pressure conduction pipe 22, a first nut 23 is sleeved on the second pressure conduction pipe 22, and the second pressure conduction pipe 22 is connected to one of the connection posts 31 of the four-way expansion joint 3 through the first nut 23, so that a second end of the second pressure conduction pipe 22 is communicated to the four-way expansion joint 3.
In a preferred embodiment, as shown in fig. 1, the second pressure conduction assembly 4 includes a third pressure conduction pipe 41, a fourth pressure conduction pipe 42, and a fifth pressure conduction pipe 43, where the third pressure conduction pipe 41 is sleeved with a second nut 44, and the fifth pressure conduction pipe 43 is sleeved with a third nut 45.
The third pressure conduction pipe 41 is connected to the other one of the connection columns 31 of the four-way expansion joint 3 through the second nut 44 so that the first end of the third pressure conduction pipe 41 is communicated to the four-way expansion joint 3; a second end of the third pressure conduit 41 is connected to a first end of the fourth pressure conduit 42, and a second end of the fourth pressure conduit 42 is connected to a first end of the fifth pressure conduit 43; the fifth pressure conducting pipe 43 is connected to the pressure conducting joint 5 by the third nut 45 such that the second end of the fifth pressure conducting pipe 43 is communicated to the pressure conducting joint 5.
Specifically, as shown in fig. 1, in the present example, the first pressure-transmitting pipe 21 and the fourth pressure-transmitting pipe 42 are hoses, and the second pressure-transmitting pipe 22, the third pressure-transmitting pipe 41, and the fifth pressure-transmitting pipe 43 are hard pipes. The second pressure transfer pipe 22, the third pressure transfer pipe 41, and the fifth pressure transfer pipe 43 are made of stainless steel, and the first pressure transfer pipe 21 and the fourth pressure transfer pipe 42 are flexible pipes made of stainless steel mesh pressure-resistant flexible pipes. The diameters of the first pressure-conducting pipe 21 and the fourth pressure-conducting pipe 42 are 4mm.
In a preferred embodiment, as shown in fig. 1, a sealing gasket 6 is provided at a connection interface between the second pressure transfer pipe 22 and one of the connection columns 31, a connection interface between the third pressure transfer pipe 41 and the other of the connection columns 31, and a connection interface between the fifth pressure transfer pipe 43 and the pressure transfer joint 5.
Fig. 2 is a schematic structural diagram of a pressure conducting joint according to an embodiment of the present utility model, and in a preferred embodiment, as shown in fig. 2, the pressure conducting joint 5 includes a first bolt section 51, a tapered connection section 52, a second bolt section 53, and a tapered joint 54 that are sequentially and fixedly connected.
Specifically, the pressure conduction hole inside the pressure conduction joint 5 may be directly 4mm, and the pressure rise and fall time may be reduced.
Specifically, as shown in fig. 1 and 2, the third nut 45 is coupled to the first bolt segment 51 such that the second end of the fifth pressure transmitting tube 43 is connected to the pressure transmitting joint 5, and the taper joint 54 is used for connection to a pressure measuring instrument installed at a production site.
Specifically, the first bolt segment 51, the tapered connection segment 52, the second bolt segment 53 and the tapered joint 54 may be integrated, and the tapered joint 54 on the pressure conduction joint 5 may perform a tapered sealing function when connected to a pressure measuring instrument on site, for example, may perform a sealing function when connected to a pressure transmitter, and may also perform a quick connection to the pressure transmitter.
Fig. 3 is an assembly view of a pressure transmission test apparatus according to an embodiment of the present utility model, as shown in fig. 1 and 3, when the pressure transmission test apparatus is installed, one end of a second pressure transmission pipe 22 is screwed into a hole of an end face of one of the connection posts 31, a first nut 23 is screwed onto the corresponding connection post 31, the second pressure transmission pipe 22 is fixed inside the first nut 23, the second pressure transmission pipe 22 is fixed into the hole of the end face of the connection post 31 along with the screwing of the first nut 23, and a sealing gasket 6 seals the hole of a connection interface position between the second pressure transmission pipe 22 and the connection post 31; one end of the third pressure-transmitting tube 41 is screwed into the hole of the end face of one of the connecting columns 31, the second nut 44 is screwed on the corresponding connecting column 31, the third pressure-transmitting tube 41 is fixed inside the second nut 44, the third pressure-transmitting tube 41 is fixed into the hole of the end face of the connecting column 31 along with the screwing of the second nut 44, and the sealing gasket 6 seals the hole of the connecting interface position between the third pressure-transmitting tube 41 and the connecting column 31; one end of the fifth pressure-transmitting tube 43 is screwed into the hole of the end face of the pressure-transmitting joint 5, the third nut 45 is screwed onto the pressure-transmitting joint 5, the fifth pressure-transmitting tube 43 is fixed inside the third nut 45, the fifth pressure-transmitting tube 43 is fixed into the hole of the end face of the pressure-transmitting joint 5 with the screwing of the third nut 45, and the sealing gasket 6 seals the hole of the connection interface position between the fifth pressure-transmitting tube 43 and the pressure-transmitting joint 5.
The embodiment also provides a method for performing experiments by using the pressure transmission device, which comprises the following steps:
(1) After the pressure transmission test device is assembled, the pressure is conducted in a three-out-two connection mode, a pressurizing pump pressure outlet is connected to a four-way expansion joint on site through a pressure conducting pipe, the four-way expansion joint conducts pressure through two connecting columns, a through hole of one connecting column is plugged, the remaining connecting column is used as an exhaust adjusting hole, finally the pressure conducting joint is connected to a site pressure measuring instrument, the pressure measuring instrument comprises a pressure switch, a pressure transmitter or a pressure sensor and the like, and site linking is completed after the pressure transmission test device is assembled.
(2) After each link of the inspection site is completed, closing the exhaust adjusting hole on the four-way expansion joint, and using a booster pump to carry out pressurization inspection on whether leakage exists or not.
(3) After the leakage test is finished, the on-site boosting test is started, the pressurization test is carried out through the pressurizing pump in the test process, the pressurization is carried out slowly in the test, the pressure is conducted to the pressure measuring instrument through the pressure transmission test device, the pressurizing pump simulates the on-site pressure, the on-site pressure measuring instrument works, the on-site equipment process parameters are triggered to reach unsafe values, and therefore the on-site pressure measuring instrument is verified, the working condition is simulated, and other on-site equipment action conditions are linked.
(4) The pressure rises to the test pressure to trigger the production equipment on site, then the pressure is slowly reduced, the speed of the pressure reduction is regulated through an exhaust regulation hole on the four-way expansion joint, and the abnormal pressure is simulated and changed.
In the experimental process, the pressure is set to exceed the upper limit pressure, the special unloading exhaust device is used for simulating the abnormal pressure exceeding the lower limit pressure, and the field device is forced to send out an abnormal or protection alarm, so that the device output under the abnormal condition is verified, and the device linkage is verified; the pressure simulation is real, the pressure conduction is correct, and the equipment linkage and logic verification can be realized in a combined way without exceeding an abnormal operation state (destructive test) by a real system.
In summary, the embodiment of the utility model provides a pressure transmission test device, which can perform a pressure transmission test on a field pressure measuring instrument in thermal power generation production, trigger a field production system, verify that a field device process control parameter exceeds a safe and effective value, then link related equipment, and detect the leakage of a field pressure bearing pipeline and a part.
The foregoing is merely exemplary of the application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the application and are intended to be comprehended within the scope of the application.
Claims (7)
1. A pressure transmission test device for testing a pressure measurement instrument in the field, the pressure transmission test device comprising: a pressure generating assembly (1), a first pressure conducting assembly (2), a four-way expansion joint (3), a second pressure conducting assembly (4) and a pressure conducting joint (5), wherein the four-way expansion joint (3) is connected to the pressure generating assembly (1) through the first pressure conducting assembly (2), and the pressure conducting joint (5) is connected to the four-way expansion joint (3) through the second pressure conducting assembly (4);
the pressure generating assembly (1) is used for simulating actual production working pressure and conducting the working pressure to the pressure conducting joint (5) through the first pressure conducting assembly (2), the four-way expansion joint (3) and the second pressure conducting assembly (4) in sequence, and the pressure conducting joint (5) is used for applying the working pressure to a pressure measuring instrument installed on a production site so as to test the pressure measuring instrument.
2. The pressure transmission test device according to claim 1, wherein the four-way expansion joint (3) is provided with four-way connecting columns (31), and threads (310) are arranged outside the connecting columns (31); four through holes (32) which are in the same direction as the four connecting columns (31) are respectively arranged in the four-way expansion joint (3), and the through holes (32) can allow air to flow in four directions in the four-way expansion joint (3); one of the through holes (32) is used as an exhaust adjusting hole, and a pressure adjusting screw (33) is arranged on the exhaust adjusting hole.
3. The pressure transmission test device according to claim 2, wherein the first pressure transmission assembly (2) comprises a first pressure transmission pipe (21) and a second pressure transmission pipe (22), a first end of the first pressure transmission pipe (21) is connected with the pressure generation assembly (1), a second end of the first pressure transmission pipe (21) is connected with a first end of the second pressure transmission pipe (22), a first nut (23) is sleeved on the second pressure transmission pipe (22), and the second pressure transmission pipe (22) is connected to one of the connecting posts (31) of the four-way expansion joint (3) through the first nut (23), so that a second end of the second pressure transmission pipe (22) is communicated to the four-way expansion joint (3).
4. A pressure transmission test device according to claim 3, characterized in that the second pressure conduction assembly (4) comprises a third pressure conduction pipe (41), a fourth pressure conduction pipe (42) and a fifth pressure conduction pipe (43), wherein the third pressure conduction pipe (41) is sleeved with a second nut (44), and the fifth pressure conduction pipe (43) is sleeved with a third nut (45);
the third pressure conducting pipe (41) is connected to the other connecting column (31) of the four-way expansion joint (3) through the second nut (44), so that the first end of the third pressure conducting pipe (41) is communicated to the four-way expansion joint (3); a second end of the third pressure conducting pipe (41) is connected with a first end of the fourth pressure conducting pipe (42), and a second end of the fourth pressure conducting pipe (42) is connected with a first end of the fifth pressure conducting pipe (43); the fifth pressure conducting pipe (43) is connected to the pressure conducting joint (5) by the third nut (45) such that the second end of the fifth pressure conducting pipe (43) communicates to the pressure conducting joint (5).
5. The pressure transmission test device according to claim 4, characterized in that a connection interface position between the second pressure conducting tube (22) and one of the connection posts (31), a connection interface position between the third pressure conducting tube (41) and the other of the connection posts (31), and a connection interface position between the fifth pressure conducting tube (43) and the pressure conducting joint (5) are provided with sealing gaskets (6), respectively.
6. The pressure transmission test device according to claim 4, wherein the pressure conducting joint (5) comprises a first bolt section (51), a conical connecting section (52), a second bolt section (53) and a conical joint (54) fixedly connected in sequence;
wherein the third nut (45) is connected to the first bolt segment (51) such that the second end of the fifth pressure conducting tube (43) is connected to the pressure conducting joint (5), the conical joint (54) being for connection to a pressure measuring instrument installed at a production site.
7. A pressure transmission testing device according to any one of claims 1-6, wherein the pressure generating assembly (1) is a booster pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320245363.6U CN219434265U (en) | 2023-02-17 | 2023-02-17 | Pressure transmission test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320245363.6U CN219434265U (en) | 2023-02-17 | 2023-02-17 | Pressure transmission test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219434265U true CN219434265U (en) | 2023-07-28 |
Family
ID=87333521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320245363.6U Active CN219434265U (en) | 2023-02-17 | 2023-02-17 | Pressure transmission test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219434265U (en) |
-
2023
- 2023-02-17 CN CN202320245363.6U patent/CN219434265U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103247358B (en) | Nuclear power station high energy pipeline local leakage monitoring test stand | |
| WO2021056126A1 (en) | Portable hydraulic system leakage signal acquisition apparatus and acquisition method thereof | |
| CN104458152A (en) | Gas valve inner leakage detection method based on acoustic emission signal processing | |
| CN104949831A (en) | Online checking device and methods for pilot valve and main valve of pilot operated safety valve | |
| CN107762574B (en) | Measurement structure of cylinder steam pressure in double-layer cylinder | |
| CN219434265U (en) | Pressure transmission test device | |
| CN102661827A (en) | Measuring method and measuring device for pressure of fluid in pipeline | |
| CN112924115A (en) | Device and method for monitoring internal leakage of high-temperature and high-pressure pipeline valve | |
| WO2021057287A1 (en) | Online high-temperature pipeline perimeter inspection system, and method | |
| CN105448358A (en) | High-temperature test method and device for beyond design basis pressure relieve valve in nuclear power plant | |
| CN203979895U (en) | A kind of testing apparatus of pipe pressurized plugging effect | |
| CN202255463U (en) | Pressure and flow test system | |
| CN113959869B (en) | High-pressure gas explosion experiment device and use method | |
| CN215218700U (en) | Belt-pressure annular space sampling analysis system | |
| CN204731018U (en) | Pilot valve and main valve on-line testing device in pilot operated safety valve | |
| WO2022237012A1 (en) | On-site measurement and debugging system and method for rigid hanging devices of pressure element | |
| CN210268563U (en) | High temperature pipeline circumference on-line monitoring system | |
| CN104330311A (en) | Device and method for detecting pressure pipeline | |
| CN201034794Y (en) | Test calibration device used for acoustic wave leak detection system | |
| CN107631762A (en) | A kind of fuel gas transmission metal hose and joint tension intensity detection means | |
| CN209927761U (en) | Online real-time detection device for hydrocarbon dew point of gas pipeline | |
| CN112815223A (en) | On-line oil filtering equipment emergency cut-off protection device based on sensor | |
| CN209841751U (en) | Online real-time detection device for water dew point of gas pipeline | |
| CN214373190U (en) | Integrated device for pressure test | |
| CN117969294B (en) | Pipeline pressure testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |