Instrument pressure tapping isolation container

Abstract

The utility model relates to the technical field of pressure measuring equipment, and particularly discloses an instrument pressure tapping isolation container, which comprises an isolation box, an inlet pressure guide pipe is inserted on the outer wall of one side of the isolation box, a tested device is arranged at one end of the inlet pressure guide pipe, an emptying pipe is inserted on the outer wall of the top of the isolation box, and the emptying pipe is connected with the tested device. An emptying valve is installed at one end of the emptying pipe, an outlet pressure guide pipe is connected to the outer wall of the bottom of the isolation box in an inserted mode, the other end of the outlet pressure guide pipe is of a three-way structure, and a transmitter and an isolation liquid pump are connected to the other two ends of the outlet pressure guide pipe in an inserted mode respectively; when the high-pressure isolation solution is filled, the high-pressure isolation solution pushes the floater to rise to contact with the stop hole of the floating disc to form sealing, and further drives the floating disc to rise to discharge a medium at the upper part of the floating disc out of the isolation box, so that the phenomena of blockage of a pressure drawing system and frequent failure of an instrument caused by incomplete replacement of the measured medium entering the isolation box are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure measuring equipment, and in particular relates to an instrument pressure-taking isolation container. Background Art

[0002] In the fields of chemical industry and petroleum production, the pressure of various liquid media is often measured, and the measurement usually requires the help of instrument pressure pipe system. In order to prevent the easy-to-condense and easy-to-freeze media from clogging the pressure pipe line, an isolation container filled with isolation solution is provided in the instrument pressure pipe system. On the one hand, the isolation container serves to isolate the instrument detection equipment from the medium to be measured. On the other hand, due to the relatively low freezing point of the isolation liquid, it can prevent the pressure pipe system from freezing and clogging during winter production, causing the instrument to malfunction. At the same time, the isolation solution is in direct contact with the medium to be measured. During operation, the isolation solution may be lost due to the carrying and displacement of the medium to be measured, which in turn causes the height of the isolation solution in the pressure system to change, affecting the measurement accuracy of the instrument. When the isolation container is filled with a large amount of the medium to be measured that is easy to freeze, it will also cause the isolation container to freeze and clog the instrument pressure pipe system, causing the instrument to malfunction.

[0003] However, there are problems in the use of traditional instrument pressure taking systems. When the isolation liquid valve is opened to replace the isolation liquid in the system, the diameter of the outlet pressure pipe is much smaller than the diameter of the isolation box, resulting in incomplete replacement of the measured medium in the isolation box. The measured medium remains in the isolation box, which in turn shortens the isolation liquid replacement cycle and increases the probability of instrument failure due to freezing of the measured medium, seriously affecting safe production in winter.

[0004] To this end, those skilled in the art have proposed an instrument pressure isolation container to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide an instrument pressure-taking isolation container to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An instrument pressure-taking isolation container comprises an isolation box, an inlet pressure pipe is connected to one side outer wall of the isolation box, a measured device is installed at one end of the inlet pressure pipe, a vent pipe is connected to the top outer wall of the isolation box, a vent valve is installed at one end of the vent pipe, an outlet pressure pipe is connected to the bottom outer wall of the isolation box, the other end of the outlet pressure pipe is a three-way structure, a transmitter and an isolation liquid pump are respectively connected to the other two ends of the outlet pressure pipe, an isolation liquid filling valve is installed at one end of the isolation liquid pump close to the outlet pressure pipe, an isolation liquid buffer tank is installed at the other end of the isolation liquid pump, and a floating plate assembly is arranged near the bottom of the isolation box.

[0008] Preferably, the floating plate assembly includes a floating plate, a float box, a float and a plurality of guide supports, a stop hole is opened at the center position of the floating plate, the float box is installed at the center position of the bottom outer wall of the floating plate, the float is located inside the float box, and the guide supports are evenly distributed and installed at positions close to the edge of the bottom outer wall of the floating plate.

[0009] Preferably, the outer diameter of the floating disc is smaller than the inner diameter of the isolation box, the inner edge of the stopping hole is set as an arc-shaped slope, the arc-shaped slope of the stopping hole is adapted to the outer surface of the float, the radius of the small circle of the inner diameter slope of the stopping hole is smaller than the radius of the float, and the diagonal length of the bottom plane of the float box is greater than the length of the float diameter.

[0010] Preferably, the float is a semi-solid spherical structure, the material of the float is preferably steel, the float box is a bar structure, the float box is composed of a bottom bar and a plurality of side bars, and the media inside and outside the float box are in communication.

[0011] Preferably, the isolation box is a cylinder, the bottom radius of the isolation box is 100 mm, the height of the isolation box is 180 mm, the radius of the floating disc is 99 mm, the thickness of the floating disc is 4 mm, the large circle radius of the stop hole is 15 mm, the small circle radius of the stop hole is 13 mm, the guide support is a cylinder, the bottom circle radius of the guide support is 5 mm, the height of the guide support is 50 mm, the side rails of the float box are cylinders, the cross-sectional radius of the side rails of the float box is 2 mm, the height of the float box is 40 mm, the diagonal length of the bottom plane of the float box is 32 mm, the spherical radius of the float is 15 mm, and the mass of the float is 50 grams.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model sets a floating plate assembly in the isolation box. When the isolation solution is filled, the high-pressure isolation solution pushes the float to rise, contacts the stop hole of the floating plate to form a seal, and then drives the floating plate to rise, and discharges the medium on the floating plate out of the isolation box, thereby avoiding the blockage of the pressure-inducing system and the frequent failure of the instrument due to incomplete replacement of the measured medium entering the isolation box. The device improves the replacement effect of the isolation liquid and reduces the frequency of abnormal failure of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of a local enlarged structure;

[0016] Figure 3 This is a schematic diagram of the structure of the floating plate assembly of the utility model at a 45-degree viewing angle;

[0017] In the figure: 1. Isolation box; 2. Inlet pressure pipe; 3. Outlet pressure pipe; 4. Valve for filling isolation liquid; 5. Vent valve; 6. Isolation liquid pump; 7. Vent pipe; 8. Float assembly; 9. Isolation liquid buffer tank; 10. Transmitter; 11. Equipment under test;

[0018] 801, floating disc; 802, stop hole; 803, guide support; 804, float box; 805, float. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3 As shown, an instrument pressure isolation container comprises an isolation box 1, an inlet pressure pipe 2 is plugged into the outer wall of one side of the isolation box 1, a measured device 11 is installed at one end of the inlet pressure pipe 2, a vent pipe 7 is plugged into the top outer wall of the isolation box 1, a vent valve 5 is installed at one end of the vent pipe 7, an outlet pressure pipe 3 is plugged into the bottom outer wall of the isolation box 1, the other end of the outlet pressure pipe 3 is a three-way structure, and the other two ends of the outlet pressure pipe 3 are respectively plugged into a transmitter 10 and an isolation liquid pump 6, an isolation liquid filling valve 4 is installed at one end of the isolation liquid pump 6 close to the outlet pressure pipe 3, and an isolation liquid buffer tank 9 is installed at the other end of the isolation liquid pump 6, and a floating plate assembly 8 is arranged near the bottom of the isolation box 1.

[0021] As can be seen from the above, a floating plate assembly 8 is arranged in the isolation box 1. When the isolation solution is filled, the high-pressure isolation solution pushes the floating plate assembly 8 upward, and discharges the medium on the floating plate assembly 8 out of the isolation box 1.

[0022] Specifically, the float assembly 8 includes a float plate 801, a float box 804, a float 805 and a plurality of guide supports 803. A stop hole 802 is opened at the center of the float plate 801. The float box 804 is installed at the center of the bottom outer wall of the float plate 801. The float 805 is located inside the float box 804. The guide supports 803 are evenly distributed and installed at positions close to the edge of the bottom outer wall of the float plate 801.

[0023] As can be seen from the above, when the isolation solution is filled, the high-pressure isolation solution pushes the float 805 up, contacts the stop hole 802 of the floating disc 801 to form a seal, and then drives the floating disc 801 up to discharge the medium on the floating disc 801 out of the isolation box 1.

[0024] Specifically, the outer diameter of the floating disc 801 is smaller than the inner diameter of the isolation box 1, the inner edge of the stopping hole 802 is set as an arc-shaped slope, the arc-shaped slope of the stopping hole 802 is adapted to the outer surface of the float 805, the radius of the small circle of the inner diameter slope of the stopping hole 802 is smaller than the radius of the float 805, and the diagonal length of the bottom plane of the float box 804 is greater than the length of the diameter of the float 805.

[0025] As can be seen from the above, the diagonal length of the bottom plane of the float box 804 is greater than the diameter of the float 805, which not only ensures that the float 805 can move freely up and down, but also prevents the float 805 from falling out of the float box 804. When the float 805 rises to the bottom of the stop hole 802, it forms a surface contact seal with the inner inclined surface of the stop hole 802, thereby driving the floating disc 801 to rise under the action of the pressure of the sealing isolation solution.

[0026] Specifically, the float 805 is a semi-solid spherical structure, and the material of the float 805 is preferably steel. The float box 804 is a bar structure, and the float box 804 is composed of a bottom bar and a plurality of side bars. The media inside and outside the float box 804 are in communication.

[0027] As can be seen from the above, the fence structure of the float box 804 facilitates the communication between the internal and external media, and facilitates the pressure conduction between the upper part of the float disc 801 and the outlet pressure pipe 3.

[0028] Specifically, the isolation box 1 is a cylinder, the bottom radius of the isolation box 1 is 100 mm, the height of the isolation box 1 is 180 mm, the radius of the floating disc 801 is 99 mm, the thickness of the floating disc 801 is 4 mm, the large circle radius of the stop hole 802 is 15 mm, the small circle radius of the stop hole 802 is 13 mm, the guide support 803 is a cylinder, the bottom circle radius of the guide support 803 is 5 mm, the height of the guide support 803 is 50 mm, the side rails of the float box 804 are cylinders, the cross-sectional radius of the side rails of the float box 804 is 2 mm, the height of the float box 804 is 40 mm, the diagonal length of the bottom plane of the float box 804 is 32 mm, the spherical radius of the float 805 is 15 mm, and the mass of the float 805 is 50 grams.

[0029] As can be seen from the above, the height of the guide support 803 is greater than the height of the float box 804, thereby leaving a gap between the float box 804 and the outlet pressure-conducting pipe 3 to facilitate pressure conduction. The guide support 803 is located at the edge of the floating disc 801, and the outer edge of the guide support 803 is aligned with the outer edge of the floating disc 801, providing a guide for the floating disc 801 to float up and down, thereby preventing the floating disc 801 from tipping over.

[0030] Working principle: Before taking pressure, the isolation box 1, the inlet pressure pipe 2 and the outlet pressure pipe 3 are filled with low freezing point and high density isolation solution. The pressure generated by the measured medium in the measured device 11 is transmitted to the instrument through the inlet pressure pipe 2, the outlet pressure pipe 3 and the isolation solution filled in the isolation box 1 to achieve the purpose of measurement. Due to the carrying and replacement of the measured medium, the isolation solution in the isolation box 1 is lost. When a large amount of easily frozen measured medium enters the isolation box 1, the isolation solution needs to be replaced. During operation, start the isolation liquid pump 6 to make the outlet of the isolation liquid pump 6 reach a constant high pressure. , open the filling isolation liquid valve 4, and the high-pressure isolation solution enters the isolation box 1 through the filling isolation liquid valve 4 and the outlet pressure pipe 3. Under the pressure of the isolation solution, the float assembly 8 floats up to discharge all the medium on the float plate 801 out of the isolation box 1. After the replacement is completed, close the filling isolation liquid valve 4. The float assembly 8 descends to the bottom of the isolation box 1 under the action of its own gravity and re-enters the measurement state, thereby achieving the purpose of completely replacing the medium in the isolation box 1 and filling the isolation box 1 with isolation liquid, effectively extending the isolation liquid replacement cycle and reducing the frequency of abnormal failure of the instrument.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An instrument pressure isolation container, characterized in that: The invention comprises an isolation box (1), wherein an inlet pressure pipe (2) is plugged into an outer wall of one side of the isolation box (1), and a device to be tested (11) is installed at one end of the inlet pressure pipe (2); a vent pipe (7) is plugged into an outer wall of the top of the isolation box (1), and a vent valve (5) is installed at one end of the vent pipe (7); an outlet pressure pipe (3) is plugged into an outer wall of the bottom of the isolation box (1), and the other end of the outlet pressure pipe (3) is a three-way structure; the other two ends of the outlet pressure pipe (3) are respectively plugged into a transmitter (10) and an isolation liquid pump (6); an isolation liquid filling valve (4) is installed at one end of the isolation liquid pump (6) close to the outlet pressure pipe (3), and an isolation liquid buffer tank (9) is installed at the other end of the isolation liquid pump (6); and a floating plate assembly (8) is arranged near the bottom of the isolation box (1); The floating disc assembly (8) comprises a floating disc plate (801), a float box (804), a float (805) and a plurality of guide supports (803); a stop hole (802) is provided at the center of the floating disc plate (801); the float box (804) is installed at the center of the bottom outer wall of the floating disc plate (801); the float (805) is located inside the float box (804); and the guide supports (803) are installed at equal intervals at positions close to the edge of the bottom outer wall of the floating disc plate (801).

2. The instrument pressure isolation container according to claim 1, characterized in that: The outer diameter of the floating disc (801) is smaller than the inner diameter of the isolation box (1); the inner edge of the stop hole (802) is arranged as an arc-shaped inclined surface; the arc-shaped inclined surface of the stop hole (802) is adapted to the outer surface of the float (805); the radius of the small circle of the inner diameter inclined surface of the stop hole (802) is smaller than the radius of the float (805); and the diagonal length of the bottom plane of the float box (804) is greater than the length of the diameter of the float (805).

3. The instrument pressure isolation container according to claim 2, characterized in that: The float (805) is a semi-solid spherical structure, the float (805) is made of steel, the float box (804) is a bar structure, the float box (804) is composed of a bottom bar and a plurality of side bars, and the media inside and outside the float box (804) are in communication.

4. The instrument pressure isolation container according to claim 3, characterized in that: The isolation box (1) is a cylinder, the bottom radius of the isolation box (1) is 100 mm, the height of the isolation box (1) is 180 mm, the radius of the floating disc (801) is 99 mm, the thickness of the floating disc (801) is 4 mm, the large circle radius of the stop hole (802) is 15 mm, the small circle radius of the stop hole (802) is 13 mm, the guide support (803) is a cylinder, and the guide support (803) is 03) has a bottom circle radius of 5 mm, the height of the guide support (803) is 50 mm, the side rails of the float box (804) are cylindrical, the cross-sectional radius of the side rails of the float box (804) is 2 mm, the height of the float box (804) is 40 mm, the diagonal length of the bottom plane of the float box (804) is 32 mm, the spherical radius of the float (805) is 15 mm, and the mass of the float (805) is 50 grams.

Images