CN110749403A - Dynamic pressure water tightness test device for sensor under all working conditions - Google Patents
Dynamic pressure water tightness test device for sensor under all working conditions Download PDFInfo
- Publication number
- CN110749403A CN110749403A CN201910970291.XA CN201910970291A CN110749403A CN 110749403 A CN110749403 A CN 110749403A CN 201910970291 A CN201910970291 A CN 201910970291A CN 110749403 A CN110749403 A CN 110749403A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- pressure
- water
- sensor
- test
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000010865 sewage Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 210000004907 gland Anatomy 0.000 description 3
- 238000011056 performance test Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
-
- 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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a dynamic pressure water tightness test device for a sensor under all working conditions, which comprises a test pressure device and a control system; the test pressure device comprises a cabinet body and a test pressure container; the cabinet body comprises a pump valve control cabinet and a test pressure container storage cabinet; the test pressure container is stored in the test pressure container storage cabinet and comprises a cylinder body and an upper cover which is detachably, hermetically and fixedly connected to the upper end of the cylinder body; a pressurizing pipeline system is arranged in the pump valve control cabinet and comprises a water tank, a pressurizing pipeline, a pipeline I, a pressure output port pressure relief pipeline and a water feeding pipeline; a water outlet pipeline and a pressure relief pipeline are arranged in the test pressure container storage cabinet; a support, a plurality of sensor interfaces I and a plurality of cables are arranged in the test pressure container barrel; the control system comprises a computer, a PLC and a sensor; the upper end of the sensor is connected to the sensor interface I; the cable is connected with the PLC, and the PLC is connected with the computer. The invention can meet the pressure water tightness test requirement of the sensor under all working conditions.
Description
Technical Field
The invention relates to a sensor performance test device, in particular to a full-working-condition dynamic pressure water tightness test device for a sensor.
Background
The sensor can bear the load of indefinite pressure fluctuation in indefinite time in actual engineering application, and no suitable test equipment and method can verify the pressure water tightness working condition, the measurement precision and the like of the sensor under the actual working condition in the market at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the full-working-condition dynamic pressure water tightness test device for the sensor, which can meet the pressure water tightness test requirements of the sensor under the full working condition.
The invention achieves the technical aim through the following technical scheme.
The full-working-condition dynamic pressure water tightness test device of the sensor has the improvement that: comprises a test pressure device and a control system; the test pressure device comprises a cabinet body and a test pressure container; the cabinet body comprises a pump valve control cabinet and a test pressure container storage cabinet; the pump valve control cabinet and the test pressure container storage cabinet are arranged side by side; the test pressure container is stored in the test pressure container storage cabinet and comprises a cylinder body and an upper cover which is detachably, hermetically and fixedly connected to the upper end of the cylinder body; the pump valve control cabinet is provided with a water tank water filling port, a pressure output port and a water tank sewage outlet; a pressurizing pipeline system is arranged in the pump valve control cabinet and comprises a water tank, a pressurizing pipeline, a pipeline I, a pressure output port pressure relief pipeline and a water adding pipeline; the water tank is arranged at the lower part in the pump valve control cabinet; one end of the water adding pipeline is connected with a water filling port of the water tank, the other end of the water adding pipeline is inserted into the water tank, and the water adding pipeline is provided with a two-position two-way electromagnetic valve V; the water inlet end of the pressurizing pipeline is inserted into the water tank, the water outlet end of the pressurizing pipeline is connected with a pressure output port, and the pressurizing pipeline is sequentially connected with a stop valve I, a filter I, a variable-frequency centrifugal pump, a one-way valve I, a two-position two-way electromagnetic valve I and a pressure sensor in series from the water inlet end to the water outlet end; the upper end of the pipeline I is connected with a pressurizing pipeline between the two-position two-way electromagnetic valve I and the check valve I, the lower end of the pipeline I is inserted into the water tank, and the pipeline I is internally provided with a two-position two-way electromagnetic valve III; a branch circuit formed by connecting a safety valve and a stop valve III in parallel is connected between a pressure pipeline between a variable frequency centrifugal pump and a check valve I and a pipeline I below a two-position two-way electromagnetic valve III; the upper end of the pressure output port pressure relief pipeline is connected with a pressure pipeline between the two-position two-way electromagnetic valve I and the pressure output port, the lower end of the pressure output port pressure relief pipeline is inserted into the water tank, a filter II is arranged in the pressure output port pressure relief pipeline, and the two-position two-way electromagnetic valve II and a pressure relief valve II which are connected in parallel are arranged in the pressure output port pressure relief pipeline between the filter II and the pressure output port; a water outlet pipeline and a pressure relief pipeline are arranged in the test pressure container storage cabinet, one end of the water outlet pipeline is connected with a pressure output port, and the other end of the water outlet pipeline is connected with an upper cover of the test pressure container; the pressure relief pipeline is arranged beside the water outlet pipeline; the upper end of the pressure relief pipeline is connected with a water outlet pipeline, and a filter IV, a pressure relief valve IV and a two-position two-way electromagnetic valve IV are arranged in the pressure relief pipeline in parallel; a support, a plurality of sensor interfaces I and a plurality of cables are arranged in the test pressure container barrel; the bracket is arranged at the lower part in the cylinder body; the sensor interface I is arranged above the bracket; the sensor interface I is connected to the lower end of a cable, and the upper end of the cable penetrates through the upper cover; the control system comprises a computer, a PLC and a sensor; the computer is arranged in the pump valve control cabinet; the upper end of the sensor is connected to the sensor interface I, and the lower end of the sensor is placed on the bracket; the cable is connected with the PLC, and the PLC is connected with the computer.
In the structure, the bottom of the test pressure vessel cylinder is externally connected with a pipeline II; and a stop valve V and a plurality of sensor interfaces II are connected in series in the pipeline II, and the stop valve V is close to the joint of the bottom of the test pressure vessel cylinder body and the pipeline II.
Compared with the prior art, the invention has the following positive effects:
1. the invention can meet the pressure water tightness test requirement of the sensor under all working conditions.
2. The bottom of the test pressure vessel cylinder is externally connected with a pipeline II; and a stop valve V and a plurality of sensor interfaces II are connected in series in the pipeline II, and the stop valve V is close to the joint of the bottom of the test pressure vessel cylinder body and the pipeline II. Therefore, the performance test can be carried out by externally connecting a sensor.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is a hydraulic schematic of the present invention.
Detailed Description
The invention is further illustrated with reference to the following examples in accordance with the accompanying drawings.
The full-working-condition dynamic pressure water tightness test device of the sensor shown in the attached drawing comprises a test pressure device and a control system; the test pressure device comprises a cabinet body 1 and a test pressure container 2; the cabinet body 1 comprises a pump valve control cabinet 1.1 and a test pressure container storage cabinet 1.3; the pump valve control cabinet 1.1 and the test pressure container storage cabinet 1.3 are arranged side by side; the test pressure vessel 2 is stored in a test pressure vessel storage cabinet 1.3 and comprises a cylinder body 2.1 and an upper cover 2.2 which is detachably, hermetically and fixedly connected to the upper end of the cylinder body 2.1.
The pump valve control cabinet 1.1 is provided with a water tank water injection port 1.1.1, a pressure output port 1.1.2 and a water tank sewage outlet 1.1.3; a pressurizing pipeline system is arranged in the pump valve control cabinet 1.1 and comprises a water tank, a pressurizing pipeline, a pipeline I, a pressure output port pressure relief pipeline and a water adding pipeline.
The water tank is arranged at the lower part in the pump valve control cabinet 1.1; one end of the water adding pipeline is connected with a water filling port 1.1.1 of the water tank, the other end of the water adding pipeline is inserted into the water tank, and the water adding pipeline is provided with a two-position two-way electromagnetic valve V; the water inlet end of the pressurizing pipeline is inserted into the water tank, the water outlet end of the pressurizing pipeline is connected with a pressure output port 1.1.2, and the pressurizing pipeline is sequentially connected with a stop valve I, a filter I, a variable frequency centrifugal pump, a one-way valve I, a two-position two-way electromagnetic valve I and a pressure sensor in series from the water inlet end to the water outlet end; the upper end of the pipeline I is connected with a pressurizing pipeline between the two-position two-way electromagnetic valve I and the one-way valve I, the lower end of the pipeline I is inserted into the water tank, and the pipeline I is internally provided with a two-position two-way electromagnetic valve III; a branch circuit formed by connecting a safety valve and a stop valve III in parallel is connected between a pressure pipeline between a variable frequency centrifugal pump and a check valve I and a pipeline I below a two-position two-way electromagnetic valve III; a pressure meter I is connected with a pressure pipeline between the variable-frequency centrifugal pump and the one-way valve I; and a pressure meter II is connected with the two-position two-way electromagnetic valve I and a pressurizing pipeline of the pressure output port 1.1.2.
The upper end of the pressure output port pressure relief pipeline is connected with a pressure pipeline between the two-position two-way electromagnetic valve I and the pressure output port 1.1.2, the lower end of the pressure output port pressure relief pipeline is inserted into the water tank, a filter II is arranged in the pressure output port pressure relief pipeline, and the two-position two-way electromagnetic valve II and a pressure relief valve II which are connected in parallel are arranged in the pressure output port pressure relief pipeline between the filter II and the pressure output port 1.1.2; a water outlet pipeline and a pressure relief pipeline are arranged in the test pressure container storage cabinet 1.3, one end of the water outlet pipeline is connected with the pressure output port 1.1.2, and the other end of the water outlet pipeline is connected with the upper cover 2.2 of the test pressure container 2; the pressure relief pipeline is arranged beside the water outlet pipeline; the upper end of the pressure relief pipeline is connected with a water outlet pipeline, and a filter IV, a pressure relief valve IV and a two-position two-way electromagnetic valve IV are arranged in the pressure relief pipeline in parallel.
A support 2.3, a plurality of sensor interfaces I2.5 and a plurality of cables 2.6 are arranged in a cylinder 2.1 of the test pressure vessel 2; the bracket 2.3 is arranged at the lower part in the cylinder 2.1; the sensor interface I2.5 is arranged above the bracket 2.3; the upper cover 2.2 is provided with a cable gland 2.4; sensor interface I2.5 is connected at cable 2.6 lower extreme, and cable 2.6's upper end runs through cable gland 2.4 to sealed by cable gland 2.4.
The control system comprises a computer 3, a PLC and a sensor 2.7; the computer 3 is arranged in the pump valve control cabinet 1.1; the upper end of the sensor 2.7 is connected to the sensor interface I2.5, and the lower end is placed on the bracket 2.3; cable 2.6 is connected with PLC, and PLC is connected with computer 3.
The bottom of the cylinder 2.1 of the test pressure vessel 2 is externally connected with a pipeline II; and a stop valve V and a plurality of sensor interfaces II 2.7 are connected in series in the pipeline II, and the stop valve V is close to the joint of the bottom of the 2.1 cylinder body of the test pressure vessel 2 and the pipeline II.
A sewage discharge pipeline is arranged between the bottom of the water tank and the sewage discharge port 1.1.3 of the water tank, and a sewage discharge valve is arranged in the sewage discharge pipeline.
A liquid level meter is arranged in the water tank, an air filter is arranged on the water tank, and a water return opening is arranged at the upper part of the water tank.
Claims (2)
1. The utility model provides a full operating mode dynamic pressure water tightness test device of sensor which characterized in that: comprises a test pressure device and a control system; the test pressure device comprises a cabinet body (1) and a test pressure container (2); the cabinet body (1) comprises a pump valve control cabinet (1.1) and a test pressure container storage cabinet (1.3); the pump valve control cabinet (1.1) and the test pressure container storage cabinet (1.3) are arranged side by side; the test pressure container (2) is stored in a test pressure container storage cabinet (1.3) and comprises a cylinder body (2.1) and an upper cover (2.2) which is detachably, hermetically and fixedly connected to the upper end of the cylinder body (2.1); a water tank water injection port (1.1.1), a pressure output port (1.1.2) and a water tank sewage outlet (1.1.3) are arranged on the pump valve control cabinet (1.1); a pressurizing pipeline system is arranged in the pump valve control cabinet (1.1), and comprises a water tank, a pressurizing pipeline, a pipeline I, a pressure output port pressure relief pipeline and a water adding pipeline; the water tank is arranged at the lower part in the pump valve control cabinet (1.1); one end of the water adding pipeline is connected with a water filling port (1.1.1) of the water tank, the other end of the water adding pipeline is inserted into the water tank, and the water adding pipeline is provided with a two-position two-way electromagnetic valve V; the water inlet end of the pressurizing pipeline is inserted into the water tank, the water outlet end of the pressurizing pipeline is connected with a pressure output port (1.1.2), and the pressurizing pipeline is sequentially connected with a stop valve I, a filter I, a variable frequency centrifugal pump, a one-way valve I, a two-position two-way electromagnetic valve I and a pressure sensor in series from the water inlet end to the water outlet end; the upper end of the pipeline I is connected with a pressurizing pipeline between the two-position two-way electromagnetic valve I and the check valve I, the lower end of the pipeline I is inserted into the water tank, and the pipeline I is internally provided with a two-position two-way electromagnetic valve III; a branch circuit formed by connecting a safety valve and a stop valve III in parallel is connected between a pressure pipeline between a variable frequency centrifugal pump and a check valve I and a pipeline I below a two-position two-way electromagnetic valve III; the upper end of the pressure output port pressure relief pipeline is connected with a pressure pipeline between the two-position two-way electromagnetic valve I and the pressure output port (1.1.2), the lower end of the pressure output port pressure relief pipeline is inserted into the water tank, a filter II is arranged in the pressure output port pressure relief pipeline, and a two-position two-way electromagnetic valve II and a pressure relief valve II which are connected in parallel are arranged in the pressure output port pressure relief pipeline between the filter II and the pressure output port (1.1.2); a water outlet pipeline and a pressure relief pipeline are arranged in the test pressure container storage cabinet (1.3), one end of the water outlet pipeline is connected with a pressure output port (1.1.2), and the other end of the water outlet pipeline is connected with an upper cover (2.2) of the test pressure container (2); the pressure relief pipeline is arranged beside the water outlet pipeline; the upper end of the pressure relief pipeline is connected with a water outlet pipeline, and a filter IV, a pressure relief valve IV and a two-position two-way electromagnetic valve IV are arranged in the pressure relief pipeline in parallel; a support (2.3), a plurality of sensor interfaces I (2.5) and a plurality of cables (2.6) are arranged in a cylinder body (2.1) of the test pressure container (2); the bracket (2.3) is arranged at the lower part in the cylinder body (2.1); the sensor interface I (2.5) is arranged above the bracket (2.3); the sensor interface I (2.5) is connected to the lower end of a cable (2.6), and the upper end of the cable (2.6) penetrates through the upper cover (2.2); the control system comprises a computer (3), a PLC and a sensor (2.7); the computer (3) is arranged in the pump valve control cabinet (1.1); the upper end of the sensor (2.7) is connected to the sensor interface I (2.5), and the lower end of the sensor is placed on the bracket (2.3); the cable (2.6) is connected with the PLC, and the PLC is connected with the computer (3).
2. The full-condition dynamic pressure water tightness test device of the sensor according to claim 1, characterized in that: the bottom of the cylinder (2.1) of the test pressure container (2) is externally connected with a pipeline II; a stop valve V and a plurality of sensor interfaces II (2.7) are connected in series in the pipeline II, and the stop valve V is close to the joint of the bottom of a cylinder body (2.1) of the test pressure container (2) and the pipeline II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910970291.XA CN110749403B (en) | 2019-10-13 | 2019-10-13 | Sensor full-working-condition dynamic pressure water tightness test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910970291.XA CN110749403B (en) | 2019-10-13 | 2019-10-13 | Sensor full-working-condition dynamic pressure water tightness test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110749403A true CN110749403A (en) | 2020-02-04 |
| CN110749403B CN110749403B (en) | 2024-05-03 |
Family
ID=69278223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910970291.XA Active CN110749403B (en) | 2019-10-13 | 2019-10-13 | Sensor full-working-condition dynamic pressure water tightness test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110749403B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05180400A (en) * | 1991-12-27 | 1993-07-20 | Takenaka Komuten Co Ltd | Pressure test device for facility piping |
| KR100885991B1 (en) * | 2008-10-21 | 2009-03-03 | 공준식 | Dynamic testing device for mechanical seal |
| CN102607960A (en) * | 2012-04-16 | 2012-07-25 | 公安部天津消防研究所 | Measurement and control system for hydraulic test |
| CN104005947A (en) * | 2014-04-13 | 2014-08-27 | 北京工业大学 | Performance testing device and method for seawater hydraulic pump in deep sea high back pressure environment |
| CN208350310U (en) * | 2018-06-28 | 2019-01-08 | 四川杰特机器有限公司 | A kind of buck-boost rate control system for the water pressure test |
| CN208653742U (en) * | 2018-09-13 | 2019-03-26 | 广州龙渊液压机械有限公司 | It is a kind of sealing and the testing integrated machine of pulse |
| CN109738276A (en) * | 2019-02-21 | 2019-05-10 | 洛阳双瑞金属复合材料有限公司 | A kind of backwash filter Withstand test device and test method |
| CN209247279U (en) * | 2018-12-21 | 2019-08-13 | 核动力运行研究所 | A kind of gate valve suppresses system online |
| CN210774561U (en) * | 2019-10-13 | 2020-06-16 | 江苏远望仪器集团有限公司 | Dynamic pressure water tightness test device for sensor under all working conditions |
-
2019
- 2019-10-13 CN CN201910970291.XA patent/CN110749403B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05180400A (en) * | 1991-12-27 | 1993-07-20 | Takenaka Komuten Co Ltd | Pressure test device for facility piping |
| KR100885991B1 (en) * | 2008-10-21 | 2009-03-03 | 공준식 | Dynamic testing device for mechanical seal |
| CN102607960A (en) * | 2012-04-16 | 2012-07-25 | 公安部天津消防研究所 | Measurement and control system for hydraulic test |
| CN104005947A (en) * | 2014-04-13 | 2014-08-27 | 北京工业大学 | Performance testing device and method for seawater hydraulic pump in deep sea high back pressure environment |
| CN208350310U (en) * | 2018-06-28 | 2019-01-08 | 四川杰特机器有限公司 | A kind of buck-boost rate control system for the water pressure test |
| CN208653742U (en) * | 2018-09-13 | 2019-03-26 | 广州龙渊液压机械有限公司 | It is a kind of sealing and the testing integrated machine of pulse |
| CN209247279U (en) * | 2018-12-21 | 2019-08-13 | 核动力运行研究所 | A kind of gate valve suppresses system online |
| CN109738276A (en) * | 2019-02-21 | 2019-05-10 | 洛阳双瑞金属复合材料有限公司 | A kind of backwash filter Withstand test device and test method |
| CN210774561U (en) * | 2019-10-13 | 2020-06-16 | 江苏远望仪器集团有限公司 | Dynamic pressure water tightness test device for sensor under all working conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110749403B (en) | 2024-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102607960B (en) | Measurement and control system for hydraulic test | |
| CN105004616B (en) | The many performance test apparatus of low-temperature (low temperature) vessel and test method | |
| CN110411843B (en) | Pressure container or pipeline air pressure test system and test method | |
| CN206459818U (en) | The test device of deep-sea movable component | |
| CN104122049B (en) | A kind of high pressure airtightness testing method | |
| CN210774561U (en) | Dynamic pressure water tightness test device for sensor under all working conditions | |
| CN202554795U (en) | Test-control system for hydraulic test | |
| CN201331469Y (en) | High-pressure high-volume fatigue test system of pressure equipment | |
| CN104215548B (en) | The static corrosion inhibition rate test combination unit of a kind of corrosion inhibiter and method of testing | |
| CN111847370B (en) | Heavy oil railway unloading system capable of prejudging completion of unloading | |
| CN110749403A (en) | Dynamic pressure water tightness test device for sensor under all working conditions | |
| CN106443030B (en) | Gas cylinder automatictesting system | |
| CN106762591B (en) | A kind of reciprocating booster pump | |
| CN109253132A (en) | A kind of hydraulic system for oil cylinder pressure maintaining test | |
| CN213065568U (en) | High-pressure water pressure stabilizing valve block structure | |
| CN112986099B (en) | Ultrahigh water head permeability characteristic test water head water supply pressurizing device and operation method | |
| CN205991274U (en) | A kind of pressure compensation device of deep-sea hydraulic system | |
| CN206600259U (en) | A kind of intelligent hydraulic power reciprocating pump test platform | |
| CN210343925U (en) | Hydraulic test bed | |
| CN211122334U (en) | Aircraft bottle water pressure test platform | |
| CN221170160U (en) | Automatic fluid infusion device of pressure oil | |
| CN220568388U (en) | Multi-point output hydraulic self-control test device | |
| CN204422346U (en) | A kind of high pressure pressure-proof bursting test machine | |
| CN220230866U (en) | Electrode rod sealing pressure-resistant detection equipment for electric desalting and electric dewatering | |
| CN220061462U (en) | High-temperature high-corrosion liquid pump-free conveying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |