Differential pressure transmitter with heat preservation mechanism

Abstract

The utility model belongs to the technical field of transmitters, and particularly relates to a differential pressure transmitter with a heat preservation mechanism, which comprises a gauge outfit, a connecting rod and a pipeline connecting seat, the top surface of the pipeline connecting seat is connected to the bottom of the gauge outfit through the connecting rod, arc-shaped fixing plates are movably arranged on the surfaces of the two sides of the connecting rod, and the two arc-shaped fixing plates are spliced into a circular structure. Heating resistor discs are arranged on the inner walls of the arc-shaped fixing plates, the inner walls of the heating resistor discs are attached to the surface of the outer wall of the connecting rod, DC female plugs are embedded in the ends of one set of arc-shaped fixing plates, DC male plugs are embedded in the ends of the other set of arc-shaped fixing plates, the DC male plugs and the DC female plugs are connected in an inserted mode, and guide grooves are symmetrically formed in the surface of the pipeline connecting base. During use, the heating resistor disc can be quickly assembled with the gauge outfit, and the gauge outfit can be heated through the heating resistor disc, so that the gauge outfit has a certain temperature during use, and the phenomenon that the interior of the transmitter is frozen after the temperature is lower than zero degree can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transmitters, in particular to a differential pressure transmitter with a heat preservation mechanism. Background Art

[0002] The differential pressure transmitter is also called the differential pressure transmitter. It is a type of sensor that measures the pressure difference between the two ends of the transmitter and outputs a standard signal. The difference between the differential pressure transmitter and the general pressure transmitter is that they both have two pressure interfaces. The differential pressure transmitter is generally divided into a positive pressure end and a negative pressure end. Under normal circumstances, the pressure at the positive pressure end of the differential pressure transmitter should be greater than the pressure at the negative pressure section to be measured.

[0003] The differential pressure transmitter is used outdoors. The temperature is low in winter. When the temperature drops below zero, the liquid in the transmitter will freeze. After condensation, the volume of the liquid will expand, which may easily cause the transmitter to rupture. To solve the above problem, a differential pressure transmitter with a heat preservation mechanism is proposed in this application. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a differential pressure transmitter with a heat preservation mechanism. When in use, the heating resistor can be quickly assembled with the meter head. The meter head can be heated by the heating resistor so that the meter head has a certain temperature when in use, which can avoid ice formation in the transmitter after the temperature drops below zero degrees, thereby solving the problems raised in the background technology.

[0005] In order to solve the above technical problems, the utility model provides a differential pressure transmitter with a heat preservation mechanism, comprising a meter head, a connecting rod and a pipe connecting seat, wherein the top surface of the pipe connecting seat is connected to the bottom of the meter head through the connecting rod;

[0006] Arc-shaped fixing plates are movably provided on the surfaces of both sides of the connecting rod, and two groups of the arc-shaped fixing plates are spliced ​​into a circular structure. A heating resistor is provided on the inner wall of the arc-shaped fixing plate, and the inner wall of the heating resistor is attached to the outer wall surface of the connecting rod. A DC female plug is embedded in the end of one group of the arc-shaped fixing plates, and a DC male plug is embedded in the end of the other group of the arc-shaped fixing plates. The DC male plug and the DC female plug are plugged into each other, and guide grooves are symmetrically provided on the surface of the pipe connecting seat, and the bottom of the arc-shaped fixing plate is slidably connected to the guide groove.

[0007] Preferably, a fixing groove is provided on the outer wall surface of the arc-shaped fixing plate, and a locking hoop is movably provided in the inner cavity of the fixing groove.

[0008] Preferably, threaded connection seats are symmetrically provided at the end of the pipe connection seat, and the end of the pipe connection seat is respectively connected to the high-pressure pipe and the low-pressure pipe through the threaded connection seats.

[0009] Preferably, a shut-off main valve is installed at one end of the high-pressure pipe and the low-pressure pipe away from the threaded connection seat.

[0010] Preferably, a tee pipe is installed on both the high-pressure pipe and the low-pressure pipe.

[0011] Preferably, a No. 1 stop valve is connected to the bottom of the three-way pipe on the low-pressure pipe.

[0012] Preferably, a No. 2 stop valve is connected to the bottom of the three-way pipe on the high-pressure pipe.

[0013] The above technical solution of the utility model has the following beneficial technical effects:

[0014] In the utility model, the bottom of the arc-shaped fixing plate is slidably connected to the guide groove, two groups of arc-shaped fixing plates can be spliced ​​into a cylindrical structure, the locking hoop can fix the arc-shaped fixing plate, at this time, the DC female plug and the DC male plug are plugged together, the heating resistor can be electrically connected, the arc-shaped fixing plate can fix the heating resistor, so that the heating resistor is attached to the surface of the connecting rod, the heating resistor can heat the surface of the connecting rod, and the liquid in the pipe connection seat is prevented from freezing due to excessively low temperature.

[0015] The utility model can stop water inflow into the pipe connection seat after the main stop valve is closed, three-way pipes are installed on the high-pressure pipe and the low-pressure pipe, and the bottoms of the three-way pipes are respectively connected to a No. 1 stop valve and a No. 2 stop valve, and the bottoms of the No. 1 stop valve and the No. 2 stop valve are connected to a clean water pipe, and after the No. 1 stop valve and the No. 2 stop valve are opened, water can enter the inner cavity of the pipe connection seat, and the inner cavity of the pipe connection seat can be flushed by circulating the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the differential pressure transmitter with a heat preservation mechanism of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the meter head of the differential pressure transmitter with a heat preservation mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the pipe connection seat of the differential pressure transmitter with a heat preservation mechanism of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the assembly structure of the heating resistor with a heat preservation mechanism.

[0020] Reference numerals:

[0021] 1. Meter head; 2. Connecting rod; 3. Pipe connection seat; 4. Threaded connection seat; 5. Arc fixing plate; 6. Heating resistor; 7. DC female plug; 8. DC male plug; 9. Fixing groove; 10. Locking hoop; 11. High-pressure pipe; 12. Low-pressure pipe; 13. Three-way pipe; 14. No. 1 stop valve; 15. No. 2 stop valve; 16. Main stop valve; 17. Guide groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0023] like Figure 1-4 As shown, the differential pressure transmitter with a heat preservation mechanism proposed by the utility model comprises a meter head 1, a connecting rod 2 and a pipe connecting seat 3, wherein the top surface of the pipe connecting seat 3 is connected to the bottom of the meter head 1 through the connecting rod 2;

[0024] The surfaces of both sides of the connecting rod 2 are movably provided with arc-shaped fixing plates 5, and two groups of the arc-shaped fixing plates 5 are spliced ​​into a circular structure. The inner wall of the arc-shaped fixing plate 5 is provided with a heating resistor 6, and the inner wall of the heating resistor 6 is attached to the outer wall surface of the connecting rod 2. One group of the arc-shaped fixing plates 5 has a DC female plug 7 embedded in the end, and the other group of the arc-shaped fixing plates 5 has a DC male plug 8 embedded in the end. The DC male plug 8 and the DC female plug 7 are plugged into each other, and the surface of the pipe connecting seat 3 is symmetrically provided with guide grooves 17, and the bottom of the arc-shaped fixing plate 5 is slidably connected to the guide groove 17.

[0025] It should be noted that the bottom of the arc-shaped fixing plate 5 is slidably connected to the guide groove 17, and the two sets of arc-shaped fixing plates 5 can be spliced ​​into a cylindrical structure. The locking hoop 10 can fix the arc-shaped fixing plate 5. At this time, the DC female plug 7 and the DC male plug 8 are plugged together, and the heating resistor 6 can be electrically connected. The arc-shaped fixing plate 5 can fix the heating resistor 6 so that the heating resistor 6 fits on the surface of the connecting rod 2. The heating resistor 6 can heat the surface of the connecting rod 2 to prevent the liquid in the pipe connecting seat 3 from freezing due to the low temperature.

[0026] In this embodiment, if Figure 4 As shown, a fixing groove 9 is provided on the outer wall surface of the arc-shaped fixing plate 5 , and a locking hoop 10 is movably provided in the inner cavity of the fixing groove 9 .

[0027] It should be noted that the locking hoop 10 and the fixing groove 9 can be used to lock the arc-shaped fixing plate 5 .

[0028] In this embodiment, if Figure 3 As shown, the ends of the pipe connection seat 3 are symmetrically provided with threaded connection seats 4 , and the ends of the pipe connection seat 3 are respectively connected to a high-pressure pipe 11 and a low-pressure pipe 12 through the threaded connection seats 4 .

[0029] It should be noted that the high-pressure pipe 11 and the low-pressure pipe 12 are connected to the pipe connection seat 3 via the threaded connection seat 4 .

[0030] In this embodiment, if Figure 3 As shown, a shut-off main valve 16 is installed at one end of the high-pressure pipe 11 and the low-pressure pipe 12 away from the threaded connection seat 4.

[0031] It should be noted that the main shut-off valve 16 can close the high-pressure pipe 11 and the low-pressure pipe 12 .

[0032] In this embodiment, if Figure 3 As shown, a three-way pipe 13 is installed on both the high-pressure pipe 11 and the low-pressure pipe 12. A first stop valve 14 is connected to the bottom of the three-way pipe 13 on the low-pressure pipe 12, and a second stop valve 15 is connected to the bottom of the three-way pipe 13 on the high-pressure pipe 11.

[0033] It should be noted that after the main stop valve 16 is closed, the water inlet into the pipe connection seat 3 can be stopped. A three-way pipe 13 is installed on the high-pressure pipe 11 and the low-pressure pipe 12, and the bottom of the three-way pipe 13 is respectively connected to the No. 1 stop valve 14 and the No. 2 stop valve 15. The bottoms of the No. 1 stop valve 14 and the No. 2 stop valve 15 are connected to the clean water pipe. After the No. 1 stop valve 14 and the No. 2 stop valve 15 are opened, water can enter the inner cavity of the pipe connection seat 3. By circulating the water, the inner cavity of the pipe connection seat 3 can be flushed.

[0034] The working principle and use process of the utility model are as follows: the ends of the high-pressure pipe 11 and the low-pressure pipe 12 are threadedly connected to the pipe connection seat 3 through the threaded connection seat 4. After the main stop valve 16 is closed, the water inflow into the pipe connection seat 3 can be stopped. A three-way pipe 13 is installed on the high-pressure pipe 11 and the low-pressure pipe 12, and the bottom of the three-way pipe 13 is respectively connected to a No. 1 stop valve 14 and a No. 2 stop valve 15. The bottoms of the No. 1 stop valve 14 and the No. 2 stop valve 15 are connected to the clean water pipe. After the No. 1 stop valve 14 and the No. 2 stop valve 15 are opened, water can enter the inner cavity of the pipe connection seat 3. By The liquid circulates to flush the inner cavity of the pipe connection seat 3. The bottom of the arc-shaped fixing plate 5 is slidably connected to the guide groove 17. The two sets of arc-shaped fixing plates 5 can be spliced ​​into a cylindrical structure. The locking hoop 10 can fix the arc-shaped fixing plate 5. At this time, the DC female plug 7 and the DC male plug 8 are plugged together to connect the heating resistor 6 with electricity. The arc-shaped fixing plate 5 can fix the heating resistor 6 so that the heating resistor 6 is attached to the surface of the connecting rod 2. The heating resistor 6 can heat the surface of the connecting rod 2 to prevent the liquid in the pipe connection seat 3 from freezing due to too low temperature.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims or the equivalent forms of such scope and boundaries.

Claims

1. A differential pressure transmitter with a heat preservation mechanism, comprising a meter head (1), a connecting rod (2) and a pipe connecting seat (3), characterized in that: The top surface of the pipe connection seat (3) is connected to the bottom of the meter head (1) via a connecting rod (2); Arc-shaped fixing plates (5) are movably provided on the surfaces of both sides of the connecting rod (2), and two groups of the arc-shaped fixing plates (5) are spliced ​​into a circular structure. The inner walls of the arc-shaped fixing plates (5) are provided with heating resistors (6), and the inner walls of the heating resistors (6) are attached to the outer wall surface of the connecting rod (2). One group of the arc-shaped fixing plates (5) has a DC female plug (7) embedded in the end, and the other group of the arc-shaped fixing plates (5) has a DC male plug (8) embedded in the end, and the DC male plug (8) and the DC female plug (7) are plugged into each other. The surface of the pipe connecting seat 3 is symmetrically provided with guide grooves (17), and the bottom of the arc-shaped fixing plates (5) is slidably connected to the guide grooves (17).

2. The differential pressure transmitter with a heat preservation mechanism according to claim 1, characterized in that: A fixing groove (9) is provided on the outer wall surface of the arc-shaped fixing plate (5), and a locking hoop (10) is movably provided in the inner cavity of the fixing groove (9).

3. The differential pressure transmitter with a heat preservation mechanism according to claim 1, characterized in that: The end of the pipe connection seat (3) is symmetrically provided with a threaded connection seat (4), and the end of the pipe connection seat (3) is respectively connected to a high-pressure pipe (11) and a low-pressure pipe (12) via the threaded connection seat (4).

4. The differential pressure transmitter with a heat preservation mechanism according to claim 3, characterized in that: A shut-off main valve (16) is installed at one end of the high-pressure pipe (11) and the low-pressure pipe (12) away from the threaded connection seat (4).

5. The differential pressure transmitter with a heat preservation mechanism according to claim 4, characterized in that: A three-way pipe (13) is installed on both the high-pressure pipe (11) and the low-pressure pipe (12).

6. The differential pressure transmitter with a heat preservation mechanism according to claim 5, characterized in that: The bottom of the three-way pipe (13) on the low-pressure pipe (12) is connected to a first stop valve (14).

7. The differential pressure transmitter with a heat preservation mechanism according to claim 6, characterized in that: A No. 2 stop valve (15) is connected to the bottom of the three-way pipe (13) on the high-pressure pipe (11).

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