A shock-resistant pressure transmitter
By introducing protective sheets and heat dissipation pipes into the pressure transmitter, the problems of gas shock and heat damage are solved, and the impact and heat dissipation functions are achieved, which extends the service life and improves safety and measurement accuracy.
Patent Information
- Application Number
- CN202110614207.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-06-02
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2041-06-02
AI Technical Summary
When measuring gas, existing pressure transmitters can easily damage the diaphragm due to the impact force and heat caused by the gas, and it is difficult to control when opening the valve, resulting in damage to the diaphragm and affecting its service life.
An impact pressure transmitter is designed, using a protective sheet and a heat dissipation pipe. The protective sheet automatically extends out of the shielding diaphragm when the air valve is opened, and the flow rate is reduced through the filter flow limiting and the heat dissipation pipe. The protective sheet will automatically retract and do not affect the Test and the diaphragm can be easily replaced.
It effectively prevents impact damage, extends service life, and reduces fluid temperature through heat dissipation and current limiting functions, improving safety and measurement accuracy.
Smart Images

Figure CN113551832B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of pressure transmitters, and in particular relates to an impact-resistant pressure transmitter. Background Art
[0002] A pressure transmitter is a device that converts pressure into pneumatic or electric signals for control and remote transmission. It can convert physical pressure parameters such as gas and liquid sensed by the pressure measuring element sensor into standard electrical signals to supply secondary instruments such as indicator alarms, recorders, and regulators for measurement, indication, and process regulation. For a pressure transmitter, when measuring gas, the impact force and heat brought by the gas can easily damage the diaphragm on the sensor. For example, when a pressure transmitter is used to measure high-temperature substances such as steam, if no corresponding heat dissipation measures are taken, the diaphragm inside the transmitter will be damaged.
[0003] The damage of the diaphragm is often caused by the gas rushing into the pipeline at the moment of opening the valve, which impacts the diaphragm. Since the measured fluid is gas, the opening process of the valve is not easy to control. To solve this problem, this example proposes a pressure transmitter that has impact resistance for gas and heat dissipation function, is equipped with a new gas valve, is easy to open, has a longer service life and is easy to replace the diaphragm. Summary of the invention
[0004] The purpose of the present invention is to provide an impact-resistant pressure transmitter to provide protection for the diaphragm. By changing the structure of the air plug and using a protective sheet to protect the diaphragm from impact, and adding a heat dissipation pipe, when the air valve of the pressure transmitter is opened, the protective sheet automatically extends toward the pipe direction to shield and protect the diaphragm, and when the gas is discharged from the air valve, it is blocked by a filter to reduce the flow rate. When the pipe is filled with the measured fluid and the air valve is closed, the protective sheet automatically retracts without affecting the detection.
[0005] The present invention provides the following technical solution: an impact-resistant pressure transmitter, comprising a buffer chamber, a connecting tube, a heat dissipation tube, a diffuser chamber, and a sensing chamber, wherein the lower end surface of the buffer chamber is fixedly connected to the connecting tube, the upper end surface of the buffer chamber is detachably connected to the sensing chamber by combining the fixing bolts and bolt holes on the connecting sheet, the upper surface of the sensing chamber is fixedly connected to a connecting mechanism, the upper end of the connecting mechanism is provided with a snap-in groove, a sensor is provided in the sensing chamber, the sensor is fixedly connected to a diaphragm located in the buffer chamber, a stabilizing ring is fixedly provided in the buffer chamber surrounding the inner wall thereof, the stabilizing ring is evenly provided with positioning holes, the positioning holes are arranged on the stabilizing ring, and the positioning holes are arranged on the stabilizing ring. The hole is slidably provided with a lifting column, the upper end of the lifting column passes through the buffer chamber and extends to the top of the buffer chamber, and a supporting ring is fixedly connected to the upper surface of the lifting column, and a second sealing ring is fixedly connected to the lower end of the lifting column, and a closing spring located between the positioning hole and the second sealing ring is fixedly provided on the lower surface of the stabilizing ring, and a protective sheet is connected to the side of the second sealing ring through a rotating shaft, and an air plug is fixedly provided on the lower surface of the second sealing ring, and an air valve matching with the air plug is provided at the corresponding position of the buffer chamber, and a connecting hole is fixedly provided on the lower surface of the air valve, and the connecting hole is fixedly connected to a diffuser chamber surrounding the connecting pipe, and a filter is fixedly provided in the diffuser chamber located in the connecting hole;
[0006] An air intake switch is fixedly provided on both sides of the buffer chamber, and the air intake switch is provided with a moving groove with an opening on the outside, a rotating shaft is fixedly provided at the bottom end of the moving groove, and a lifting block is rotatably connected to the rotating shaft, and a pry bar extending through the side opening of the moving groove to the outside of the air intake switch is fixedly connected to the side of the lifting block, and a support column located in the moving groove is slidably connected to the upper surface of the lifting block, the support column passes through the upper end of the moving groove and a support block is fixedly provided on the upper surface thereof, and the support block is fixedly connected to the support ring.
[0007] The beneficial effects of the present invention are as follows: the structure is simple, the operation is easy, the gas has the ability to resist impact, and the heat dissipation function is provided, a new gas valve is provided, which is easy to open, the service life is extended, and the diaphragm is easy to replace, as follows:
[0008] 1. The present invention is provided with a buffer chamber, which is used to improve the pressure resistance. The gas to be discharged is limited by the diffuser chamber. When the gas valve is opened, the measured fluid flows into the heat dissipation pipe, enters the buffer chamber, and then enters the connecting hole from the gas valve. It is blocked by the filter on the connecting hole. The fluid passing through the filter enters the diffuser chamber and is discharged from the diffuser hole. In this process, the flow rate of the fluid is reduced. The fluid with a higher temperature dissipates heat on the heat dissipation pipe and enters the diffuser chamber for cooling under the blockage of the filter. The fluid discharged from the diffuser hole is cooled to prevent scalding of personnel.
[0009] 2. The present invention is provided with a protective sheet. After the support column is pried up with a pry bar, the air plug is separated from the air valve. At the same time, the protective sheet rotates toward the center under the obstruction of the inner baffle ring and the upper baffle ring to form an isolation layer in front of the diaphragm to buffer the fluid rushing in. When the pry bar is reset, the protective sheet returns to its previous position under the obstruction of the inner baffle ring and the upper baffle ring, and is retracted on the inner wall side of the buffer chamber without affecting normal measurement.
[0010] 3. The diaphragm of the present invention is arranged in the buffer chamber, and the upper end surface of the buffer chamber and the sensing chamber are detachably connected by combining the fixing bolts and bolt holes on the connecting plate. After the diaphragm is damaged, the sensing chamber is disassembled by removing the fixing bolts. The disassembled sensing chamber diaphragm is exposed to the outside for easy replacement.
[0011] Preferably, the snap-in slot matches the curvature of the connected instrument panel, and stabilizing holes are provided on both sides of the snap-in slot, which are threadedly connected to the instrument panel through the stabilizing holes. The snap-in slot fits the size of the instrument panel, and the instrument panel is set in the snap-in slot, and the instrument panel is fixed by screws to achieve installation of the instrument panel.
[0012] Preferably, a first sealing ring matching the opening is provided on the lifting column above the point where the lifting column penetrates the buffer chamber, and the lifting column is slidably connected to the buffer chamber, and the sealing ring increases the sealing performance of the buffer chamber.
[0013] Preferably, the protective sheet is an aluminum alloy metal sheet with an arc, and the aluminum alloy has the characteristics of heat resistance and corrosion resistance. The buffer chamber is located on the inner side of the protective sheet and is fixedly provided with an inner retaining ring. The inner retaining ring is used to limit the protective sheet in an idle state. The buffer chamber is located on the upper outer side of the protective sheet and is fixedly provided with an upper retaining ring. The upper retaining ring and the inner retaining ring make the protective sheet rotate toward the center when moving upward, and become horizontally parallel after moving to the maximum height. The upper retaining ring is in sliding contact with the protective sheet and the joint is provided with an arc matching the protective sheet, so that the protective sheet forms a buffer layer in front of the diaphragm.
[0014] Preferably, the closing spring provides a thrust to both ends to stabilize the gas plug in the gas valve. When the gas plug leaves the gas valve, the closing spring provides resistance, and the gas plug can automatically enter the gas valve after the pry bar is released.
[0015] Preferably, a groove matching the second sealing ring is provided at the upper end of the air valve, so that the sealing effect of the second sealing ring is better.
[0016] Preferably, the filter is made of breathable cloth, which is made of high-quality heat-resistant and corrosion-resistant chemical synthetic fiber, so that it is suitable for the application range of acid-resistant, alkali-resistant, heat-resistant, wear-resistant, high-temperature-resistant, non-slip, and corrosion-resistant environments, and the filter covers the opening of the connecting hole. The side of the diffuser chamber is evenly provided with diffuser holes, and the gas is discharged through the diffuser holes.
[0017] Preferably, the lifting block is located in the moving groove and is in the shape of an elongated strip, and the upper surface is in the shape of an arc, so that it can lift the support column upward when it rotates. The height difference caused by the rotation of the lifting block matches the joint between the air plug and the air valve, so that the lifting column can drive the air plug to separate from the air valve.
[0018] Preferably, a connecting thread is provided on the connecting pipe, the connecting thread is thread-tightly connected to a heat dissipation pipe, the other end of the heat dissipation pipe is tightly connected to the measured pipeline, and heat is dissipated by fluid flowing through the heat dissipation pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0020] Figure 1 It is an overall schematic diagram of the present invention;
[0021] Figure 2 It is a schematic diagram of the internal structure of the buffer chamber of the present invention;
[0022] Figure 3 is a cross-sectional view of the buffer chamber of the present invention;
[0023] Figure 4 It is an enlarged view of the air intake switch in the present invention;
[0024] Figure 5 It is an enlarged view of point A in the present invention;
[0025] Markings in the figure are: 1 buffer chamber, 2 connecting pipe, 3 heat dissipation pipe, 4 air diffusion chamber, 5 connecting plate, 6 sensing chamber, 7 connecting mechanism, 8 snap-in groove, 9 air intake switch, 10 support ring, 11 air diffusion hole, 12 fixing bolt, 13 stabilizing hole, 14 pry bar, 15 bolt hole, 16 support block, 17 inner retaining ring, 18 stabilizing ring, 19 lifting column, 20 closing spring, 21 protective plate, 22 upper retaining ring, 23 diaphragm, 24 connecting thread, 25 filter, 26 lifting block, 27 support column, 28 sensor, 29 first sealing ring, 30 moving groove, 31 positioning hole, 32 rotating shaft, 33 connecting hole, 34 air plug, 35 air valve, 36 second sealing ring. DETAILED DESCRIPTION
[0026] The present invention is further described below in conjunction with specific embodiments. These embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] The structural features of the present invention are now described in detail with reference to the accompanying drawings.
[0028] See also Figure 1 A shock-resistant pressure transmitter comprises a buffer chamber 1, a connecting pipe 2, a heat dissipation pipe 3, a diffuser chamber 4, and a sensing chamber 6. The lower end surface of the buffer chamber 1 is fixedly connected to the connecting pipe 2, and the upper end surface of the buffer chamber 1 is detachably connected to the sensing chamber 6 by combining the fixing bolts 12 on the connecting piece 5 with the bolt holes 15, so that it is easy to disassemble. A connecting mechanism 7 is fixedly connected to the upper surface of the sensing chamber 6, and the circuit and signal connection of the sensor 28 and the instrument panel are supported and connected through the connecting mechanism 7. A snap-in groove 8 is provided at the upper end of the connecting mechanism 7, and the snap-in groove 8 matches the curvature of the connected instrument panel. Stabilizing holes 13 are penetrated on both sides of the snap-in groove 8, and the instrument panel is threadedly connected through the stabilizing holes 13. The snap-in groove 8 fits the size of the instrument panel, and the instrument panel is defined in the snap-in groove 8. The instrument panel is fixed by screws to achieve the installation of the instrument panel.
[0029] See also Figure 2-3The sensing chamber 6 is provided with a sensor 28, and the sensor 28 is fixedly connected to a diaphragm 23 located in the buffer chamber 1. The diaphragm 23 is used to measure the pressure value. The buffer chamber 1 is fixedly provided with a stabilizing ring 18 surrounding its inner wall. The lifting column 19 is limited by the stabilizing ring 18 and the positioning hole. The stabilizing ring 18 is evenly provided with positioning holes 31. The positioning hole 31 is slidably provided with a lifting column 19. The closing of the air valve 35 is achieved by the movement of the lifting column 19. The upper end of the lifting column 19 passes through the buffer chamber 1 and extends to the top of the buffer chamber 1. The upper surface of the lifting column 19 is fixedly connected to a support ring 10, which is brought by the support ring 10. The lifting column 19 is moved up and down, and the lower end of the lifting column 19 is fixedly connected with a second sealing ring 36, and the air valve 35 is sealed by the second sealing ring 36. The lower surface of the stabilizing ring 18 is fixed with a closing spring 20 located between the positioning hole 31 and the second sealing ring 36. The closing spring 20 provides thrust to both ends to stabilize the air plug 34 in the air valve 35. When the air plug 34 leaves the air valve 35, the closing spring 20 provides resistance. After the pry bar 14 is released, the air plug 34 can automatically enter the air valve 35. The side of the second sealing ring 36 is connected with a protective sheet 21 through a rotating shaft, and the protective sheet 21 is used to protect the diaphragm from stamping:
[0030] The protective sheet 21 is an aluminum alloy metal sheet with an arc. The buffer chamber 1 is located on the inner side of the protective sheet 21 and is fixedly provided with an inner stop ring 17. The inner stop ring 17 limits the protective sheet 21 in an idle state. The buffer chamber 1 is located on the upper outer side of the protective sheet 21 and is fixedly provided with an upper stop ring 22. The upper stop ring 22 and the inner stop ring 17 allow the protective sheet 21 to rotate toward the center when moving upward, and become horizontally parallel after moving to the maximum height. The upper stop ring 22 is in sliding contact with the protective sheet 21 and the joint is provided with an arc matching the protective sheet 21, so that the protective sheet 21 forms a buffer layer in front of the diaphragm 23.
[0031] See also Figure 2 , 5 An air plug 34 is fixedly provided on the lower surface of the second sealing ring 36, and the opening and closing of the air valve 35 is realized by the air plug 34. The buffer chamber 1 is provided with an air valve 35 matching the air plug 34, and exhaust is performed through the air valve 35. A connecting hole 33 is fixedly provided on the lower surface of the air valve 35. The connecting hole 33 is fixedly connected with a diffuser chamber 4 surrounding the connecting pipe 2, and the diffuser chamber 4 and the buffer chamber 1 are connected through the connecting hole 33. A filter screen 25 is fixedly provided in the connecting hole 33 in the diffuser chamber 4. The filter screen 25 is made of breathable cloth. The breathable cloth is made of high-quality heat-resistant and corrosion-resistant chemical synthetic fiber, so that it is suitable for acid-resistant, alkali-resistant, heat-resistant, wear-resistant, high-temperature-resistant, anti-slip, and corrosion-resistant environments. The filter screen 25 covers the opening of the connecting hole 33, and diffuser holes 11 are evenly provided on the side of the diffuser chamber 4, and gas is exhausted through the diffuser holes 11.
[0032] See also Figure 2 ,4 , 5. Air intake switches 9 are fixedly provided on both sides of the buffer chamber 1. The air intake switch 9 is provided with a movement groove 30 with an opening on the outside. The opening of the movement groove 30 provides a space for the pry bar 14 to move. A rotating shaft 32 is fixedly provided at the bottom of the movement groove 30. The pry bar 14 can be rotated through the rotating shaft 32, and the support column 27 is pried up by using the lifting block 26. The rotating shaft 32 is rotatably connected with the lifting block 26. The side of the lifting block 26 is fixedly connected with the pry bar 14 extending to the outside of the air intake switch 9 through the side opening of the movement groove 30. The lifting block 26 is located in the movement groove 30 and is in a long strip shape, and the upper surface is in an arc shape, so that it can lift the support column 27 upward when it rotates. The height difference caused by the rotation of the lifting block 26 matches the junction of the air plug 34 and the air valve 35, so that the lifting column 19 can drive the air plug 34 to separate from the air valve 35. The upper surface of the lifting block 26 is slidably connected with a support column 27 located in the moving groove 30. The support column 27 passes through the upper end of the moving groove 30 and a support block 16 is fixedly provided on its upper surface. The support block 16 is fixedly connected to the support ring 10. The support ring 10 is lifted by the support block 16 on the support column 27, thereby driving the lifting column 19 to move up and down.
[0033] See also Figure 1 The connecting pipe 2 is provided with a connecting thread 24, and the connecting thread 24 is thread-tightly connected to a heat dissipation pipe 3, and the other end of the heat dissipation pipe 3 is tightly connected to the measured pipeline, and heat is dissipated by the fluid flowing through the heat dissipation pipe 3.
[0034] An impact-resistant pressure transmitter provides protection for the diaphragm. The protective sheet automatically extends toward the pipeline to shield and protect the diaphragm. When the gas is discharged from the air valve, it is blocked by the filter to reduce the flow rate. When the pipeline is filled with the measured fluid and the air valve is closed, the protective sheet automatically retracts without affecting the detection.
[0035] When in use, the support column 27 is pried up with the pry bar 14. The arc-shaped upper surface of the lifting block 26 lifts the support column 27 upward when rotating. The support block 16 on the support column 27 lifts the support ring 10, thereby driving the lifting and lowering of the lifting column 19, so that the air plug 34 is separated from the air valve 35. At the same time, under the obstruction of the inner retaining ring 17 and the upper retaining ring 22, the protective sheet 21 rotates toward the center to form an isolation layer in front of the diaphragm 23 to buffer the fluid rushing in; the closing spring 20 provides a thrust to both ends to stabilize the air plug 34 in the air valve 35. When the air plug 34 leaves the air valve 35, the closing spring 20 provides resistance. After the pry bar 14 is released, the air plug 34 can automatically enter the air valve 35; when the pry bar 14 is reset, under the obstruction of the inner retaining ring 17 and the upper retaining ring 22, the protective sheet 21 returns to its previous position and is retracted on the inner wall side of the buffer chamber 1.
[0036] When the air valve 35 is opened, the measured fluid flows into the heat dissipation pipe 3, enters the buffer chamber 1, and then enters the connecting hole 33 from the air valve 35, is blocked by the filter 25 on the connecting hole 33, and the fluid passing through the filter 25 enters the diffuser chamber 4 and is discharged from the diffuser hole 11. In this process, the flow rate of the fluid is reduced, and the fluid with a higher temperature dissipates heat on the heat dissipation pipe 3, and enters the diffuser chamber 4 for cooling under the blockage of the filter 25.
[0037] When the diaphragm 23 needs to be replaced, the sensing chamber 6 is disassembled by removing the fixing bolts 12, and the diaphragm 23 of the disassembled sensing chamber 6 is exposed to the outside; the instrument panel is installed by placing the instrument panel in the slot 8 and fixing the instrument panel with screws, and the heat dissipation pipe 3 can be replaced according to the specific situation when the measured fluid is different.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A shock-resistant pressure transmitter, comprising a buffer chamber (1), a connection pipe (2), a heat dissipation pipe (3), a gas diffusion chamber (4), and a sensing chamber (6), characterized in that: The lower end surface of the buffer chamber (1) is fixedly connected to the connecting pipe (2); the upper end surface of the buffer chamber (1) is detachably connected to the sensing chamber (6) by combining the fixing bolts (12) on the connecting plate (5) and the bolt holes (15); the upper surface of the sensing chamber (6) is fixedly connected to a connecting mechanism (7); the upper end of the connecting mechanism (7) is provided with a snap-in groove (8); a sensor (28) is provided in the sensing chamber (6); the sensor (28) is fixedly connected to a diaphragm (23) located in the buffer chamber (1); a stabilizing ring (18) surrounding the inner wall of the buffer chamber (1) is fixedly provided in the buffer chamber (1); positioning holes (31) are evenly provided on the stabilizing ring (18); a lifting column (19) is slidably provided in the positioning hole (31); the upper end of the lifting column (19) passes through the buffer chamber (1) and extends to the buffer chamber (1). Above the punching chamber (1), a supporting ring (10) is fixedly connected to its upper surface, a second sealing ring (36) is fixedly connected to the lower end of the lifting column (19), a closing spring (20) located between the positioning hole (31) and the second sealing ring (36) is fixedly provided on the lower surface of the stabilizing ring (18), a protective sheet (21) is connected to the side of the second sealing ring (36) via a rotating shaft, an air plug (34) is fixedly provided on the lower surface of the second sealing ring (36), an air valve (35) matching the air plug (34) is provided at a position of the buffer chamber (1) corresponding to the air plug (34), a connecting hole (33) is fixedly provided on the lower surface of the air valve (35), the connecting hole (33) is fixedly connected to a diffuser chamber (4) surrounding the connecting pipe (2), a filter screen (25) is fixedly provided in the diffuser chamber (4) and located in the connecting hole (33); The protective sheet (21) is an aluminum alloy metal sheet with an arc, the buffer chamber (1) is located inside the protective sheet (21) and is fixedly provided with an inner retaining ring (17), the buffer chamber (1) is located above the outer side of the protective sheet (21) and is fixedly provided with an upper retaining ring (22), the upper retaining ring (22) is in sliding contact with the protective sheet (21) and a curvature matching the protective sheet (21) is provided at the joint; An air intake switch (9) is fixedly provided on both sides of the buffer chamber (1), and the air intake switch (9) is provided with a moving groove (30) with an opening on the outside, and a rotating shaft (32) is fixedly provided at the bottom end of the moving groove (30), and the rotating shaft (32) is rotatably connected to a lifting block (26), and a pry bar (14) is fixedly connected to the side of the lifting block (26) and extends to the outside of the air intake switch (9) through the side opening of the moving groove (30), and a support column (27) located in the moving groove (30) is slidably connected to the upper surface of the lifting block (26), and the support column (27) passes through the upper end of the moving groove (30) and a support block (16) is fixedly provided on its upper surface, and the support block (16) is fixedly connected to the support ring (10).
2. The shock-resistant pressure transmitter according to claim 1, characterized in that: The snap-in slot (8) matches the curvature of the connected instrument panel, and stabilizing holes (13) are provided on both sides of the snap-in slot (8) and are threadedly connected to the instrument panel through the stabilizing holes (13).
3. The shock-resistant pressure transmitter according to claim 1, characterized in that: A first sealing ring (29) matching the opening is provided on the lifting column (19) above the point where the lifting column (1) penetrates the buffer chamber (1), and the lifting column (19) is slidably connected to the buffer chamber (1).
4. The shock-resistant pressure transmitter according to claim 1, characterized in that: The closing spring (20) provides a pushing force to both ends.
5. The shock-resistant pressure transmitter according to claim 1, characterized in that: The upper end of the gas valve (35) is provided with a groove matching the second sealing ring (36).
6. The shock-resistant pressure transmitter according to claim 1, characterized in that: The filter screen (25) is made of breathable cloth, and the filter screen (25) covers the opening of the connecting hole (33). The side of the air diffusion chamber (4) is evenly provided with air diffusion holes (11).
7. The shock-resistant pressure transmitter according to claim 1, characterized in that: The lifting block (26) is located in the moving groove (30) and is in the shape of a long strip, and the upper surface is in the shape of an arc. The height difference caused by the rotation of the lifting block (26) matches the joint of the air plug (34) and the air valve (35).
8. The shock-resistant pressure transmitter according to claim 1, characterized in that: The connecting pipe (2) is provided with a connecting thread (24), the connecting thread (24) is thread-tightly connected to a heat dissipation pipe (3), and the other end of the heat dissipation pipe (3) is tightly connected to the pipeline to be tested.
Citation Information
Patent Citations
Impact-resistant pressure transmitter
CN112378571A
Diaphragm pressure gauge with protective cover
CN211651915U